@@ -21,7 +21,6 @@
/jv-exp.c
/m2-exp.c
/objc-exp.c
-/observer.h
/observer.inc
/p-exp.c
/rust-exp.c
@@ -421,6 +421,7 @@ SUBDIR_UNITTESTS_SRCS = \
unittests/memory-map-selftests.c \
unittests/memrange-selftests.c \
unittests/offset-type-selftests.c \
+ unittests/observable-selftests.c \
unittests/optional-selftests.c \
unittests/ptid-selftests.c \
unittests/rsp-low-selftests.c \
@@ -1054,7 +1055,7 @@ COMMON_SFILES = \
namespace.c \
objc-lang.c \
objfiles.c \
- observer.c \
+ observable.c \
opencl-lang.c \
osabi.c \
osdata.c \
@@ -1586,8 +1587,6 @@ generated_files = \
config.h \
gcore \
jit-reader.h \
- observer.h \
- observer.inc \
$(GNULIB_H) \
$(NAT_GENERATED_FILES)
@@ -1946,7 +1945,7 @@ tags: TAGS
clean mostlyclean: $(CONFIG_CLEAN)
@$(MAKE) $(FLAGS_TO_PASS) DO=clean "DODIRS=$(CLEANDIRS)" subdir_do
rm -f *.o *.a $(ADD_FILES) *~ init.c-tmp init.l-tmp version.c-tmp
- rm -f init.c version.c observer.h observer.inc
+ rm -f init.c version.c
rm -f gdb$(EXEEXT) core make.log
rm -f gdb[0-9]$(EXEEXT)
rm -f test-cp-name-parser$(EXEEXT)
@@ -2133,12 +2132,6 @@ version.c: Makefile version.in $(srcdir)/../bfd/version.h $(srcdir)/common/creat
$(SHELL) $(srcdir)/common/create-version.sh $(srcdir) \
$(host_alias) $(target_alias) version.c
-observer.h: observer.sh doc/observer.texi
- ${srcdir}/observer.sh h ${srcdir}/doc/observer.texi observer.h
-
-observer.inc: observer.sh doc/observer.texi
- ${srcdir}/observer.sh inc ${srcdir}/doc/observer.texi observer.inc
-
lint: $(LINTFILES)
$(LINT) $(INCLUDE_CFLAGS) $(LINTFLAGS) $(LINTFILES) \
`echo $(DEPFILES) $(CONFIG_OBS) | sed 's/\.o /\.c /g'`
@@ -48,7 +48,7 @@
#include "annotate.h"
#include "valprint.h"
#include "source.h"
-#include "observer.h"
+#include "observable.h"
#include "vec.h"
#include "stack.h"
#include "gdb_vecs.h"
@@ -14720,9 +14720,9 @@ DWARF attribute."),
NULL, xcalloc, xfree);
/* The ada-lang observers. */
- observer_attach_new_objfile (ada_new_objfile_observer);
- observer_attach_free_objfile (ada_free_objfile_observer);
- observer_attach_inferior_exit (ada_inferior_exit);
+ gdb::observers::new_objfile.attach (ada_new_objfile_observer);
+ gdb::observers::free_objfile.attach (ada_free_objfile_observer);
+ gdb::observers::inferior_exit.attach (ada_inferior_exit);
/* Setup various context-specific data. */
ada_inferior_data
@@ -16,7 +16,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbcmd.h"
#include "target.h"
#include "ada-lang.h"
@@ -1444,8 +1444,8 @@ _initialize_tasks (void)
ada_tasks_inferior_data_handle = register_inferior_data ();
/* Attach various observers. */
- observer_attach_normal_stop (ada_tasks_normal_stop_observer);
- observer_attach_new_objfile (ada_tasks_new_objfile_observer);
+ gdb::observers::normal_stop.attach (ada_tasks_normal_stop_observer);
+ gdb::observers::new_objfile.attach (ada_tasks_new_objfile_observer);
/* Some new commands provided by this module. */
add_info ("tasks", info_tasks_command,
@@ -51,7 +51,7 @@ set_can_use_agent (const char *args, int from_tty, struct cmd_list_element *c)
can_use_agent = can_use_agent_off;
}
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
static void
@@ -66,7 +66,7 @@ agent_new_objfile (struct objfile *objfile)
void
_initialize_agent (void)
{
- observer_attach_new_objfile (agent_new_objfile);
+ gdb::observers::new_objfile.attach (agent_new_objfile);
add_setshow_enum_cmd ("agent", class_run,
can_use_agent_enum,
@@ -46,7 +46,7 @@
#include "regcache.h"
#include "gdbcmd.h"
#include "ppc-tdep.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include <procinfo.h>
@@ -1859,11 +1859,11 @@ _initialize_aix_thread (void)
complete_target_initialization (&aix_thread_ops);
/* Notice when object files get loaded and unloaded. */
- observer_attach_new_objfile (new_objfile);
+ gdb::observers::new_objfile.attach (new_objfile);
/* Add ourselves to inferior_created event chain.
This is needed to enable the thread target on "attach". */
- observer_attach_inferior_created (aix_thread_inferior_created);
+ gdb::observers::inferior_created.attach (aix_thread_inferior_created);
add_setshow_boolean_cmd ("aix-thread", class_maintenance, &debug_aix_thread,
_("Set debugging of AIX thread module."),
@@ -22,7 +22,7 @@
#include "target.h"
#include "gdbtypes.h"
#include "breakpoint.h"
-#include "observer.h"
+#include "observable.h"
#include "inferior.h"
#include "infrun.h"
#include "top.h"
@@ -592,7 +592,7 @@ breakpoint_changed (struct breakpoint *b)
void
_initialize_annotate (void)
{
- observer_attach_breakpoint_created (breakpoint_changed);
- observer_attach_breakpoint_deleted (breakpoint_changed);
- observer_attach_breakpoint_modified (breakpoint_changed);
+ gdb::observers::breakpoint_created.attach (breakpoint_changed);
+ gdb::observers::breakpoint_deleted.attach (breakpoint_changed);
+ gdb::observers::breakpoint_modified.attach (breakpoint_changed);
}
@@ -24,7 +24,7 @@
#include "linux-nat.h"
#include "target-descriptions.h"
#include "auxv.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
#include "arm-tdep.h"
@@ -44,7 +44,7 @@
#include "remote.h"
#include "target-descriptions.h"
#include "user-regs.h"
-#include "observer.h"
+#include "observable.h"
#include "arch/arm.h"
#include "arch/arm-get-next-pcs.h"
@@ -9556,7 +9556,7 @@ _initialize_arm_tdep (void)
= register_objfile_data_with_cleanup (NULL, arm_objfile_data_free);
/* Add ourselves to objfile event chain. */
- observer_attach_new_objfile (arm_exidx_new_objfile);
+ gdb::observers::new_objfile.attach (arm_exidx_new_objfile);
arm_exidx_data_key
= register_objfile_data_with_cleanup (NULL, arm_exidx_data_free);
@@ -25,7 +25,7 @@
#include "ui-out.h"
#include "filenames.h"
#include "command.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include "cli/cli-script.h"
#include "gdbcmd.h"
@@ -1553,7 +1553,7 @@ _initialize_auto_load (void)
= register_program_space_data_with_cleanup (NULL,
auto_load_pspace_data_cleanup);
- observer_attach_new_objfile (auto_load_new_objfile);
+ gdb::observers::new_objfile.attach (auto_load_new_objfile);
add_setshow_boolean_cmd ("gdb-scripts", class_support,
&auto_load_gdb_scripts, _("\
@@ -1663,7 +1663,7 @@ This options has security implications for untrusted inferiors."),
show_auto_load_safe_path,
auto_load_set_cmdlist_get (),
auto_load_show_cmdlist_get ());
- observer_attach_gdb_datadir_changed (auto_load_gdb_datadir_changed);
+ gdb::observers::gdb_datadir_changed.attach (auto_load_gdb_datadir_changed);
cmd = add_cmd ("add-auto-load-safe-path", class_support,
add_auto_load_safe_path,
@@ -24,7 +24,7 @@
#include "inferior.h"
#include "valprint.h"
#include "gdbcore.h"
-#include "observer.h"
+#include "observable.h"
#include "filestuff.h"
#include "objfiles.h"
@@ -579,7 +579,7 @@ This is information provided by the operating system at program startup."));
= register_inferior_data_with_cleanup (NULL, auxv_inferior_data_cleanup);
/* Observers used to invalidate the auxv cache when needed. */
- observer_attach_inferior_exit (invalidate_auxv_cache_inf);
- observer_attach_inferior_appeared (invalidate_auxv_cache_inf);
- observer_attach_executable_changed (invalidate_auxv_cache);
+ gdb::observers::inferior_exit.attach (invalidate_auxv_cache_inf);
+ gdb::observers::inferior_appeared.attach (invalidate_auxv_cache_inf);
+ gdb::observers::executable_changed.attach (invalidate_auxv_cache);
}
@@ -27,7 +27,7 @@
#include "mi/mi-common.h"
#include "valprint.h"
#include "arch-utils.h"
-#include "observer.h"
+#include "observable.h"
#include "xml-syscall.h"
/* An instance of this type is used to represent a syscall catchpoint.
@@ -632,7 +632,7 @@ _initialize_break_catch_syscall (void)
{
initialize_syscall_catchpoint_ops ();
- observer_attach_inferior_exit (clear_syscall_counts);
+ gdb::observers::inferior_exit.attach (clear_syscall_counts);
catch_syscall_inferior_data
= register_inferior_data_with_cleanup (NULL,
catch_syscall_inferior_data_cleanup);
@@ -49,7 +49,7 @@
#include "block.h"
#include "solib.h"
#include "solist.h"
-#include "observer.h"
+#include "observable.h"
#include "memattr.h"
#include "ada-lang.h"
#include "top.h"
@@ -903,7 +903,7 @@ set_breakpoint_condition (struct breakpoint *b, const char *exp,
}
mark_breakpoint_modified (b);
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
/* Completion for the "condition" command. */
@@ -1172,7 +1172,7 @@ breakpoint_set_commands (struct breakpoint *b,
validate_commands_for_breakpoint (b, commands.get ());
b->commands = std::move (commands);
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
/* Set the internal `silent' flag on the breakpoint. Note that this
@@ -1186,7 +1186,7 @@ breakpoint_set_silent (struct breakpoint *b, int silent)
b->silent = silent;
if (old_silent != silent)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
/* Set the thread for this breakpoint. If THREAD is -1, make the
@@ -1199,7 +1199,7 @@ breakpoint_set_thread (struct breakpoint *b, int thread)
b->thread = thread;
if (old_thread != thread)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
/* Set the task for this breakpoint. If TASK is 0, make the
@@ -1212,7 +1212,7 @@ breakpoint_set_task (struct breakpoint *b, int task)
b->task = task;
if (old_task != task)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
void
@@ -1269,7 +1269,7 @@ commands_command_1 (const char *arg, int from_tty,
{
validate_commands_for_breakpoint (b, cmd.get ());
b->commands = cmd;
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
});
}
@@ -2655,7 +2655,7 @@ insert_bp_location (struct bp_location *bl,
{
/* See also: disable_breakpoints_in_shlibs. */
bl->shlib_disabled = 1;
- observer_notify_breakpoint_modified (bl->owner);
+ gdb::observers::breakpoint_modified.notify (bl->owner);
if (!*disabled_breaks)
{
fprintf_unfiltered (tmp_error_stream,
@@ -5321,7 +5321,7 @@ bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid)
bs->stop = 0;
/* Increase the hit count even though we don't stop. */
++(b->hit_count);
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
}
@@ -5476,7 +5476,7 @@ bpstat_stop_status (const address_space *aspace,
if (bs->stop)
{
++(b->hit_count);
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
/* We will stop here. */
if (b->disposition == disp_disable)
@@ -7639,7 +7639,7 @@ disable_breakpoints_in_unloaded_shlib (struct so_list *solib)
loc->inserted = 0;
/* This may cause duplicate notifications for the same breakpoint. */
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
if (!disabled_shlib_breaks)
{
@@ -7722,7 +7722,7 @@ disable_breakpoints_in_freed_objfile (struct objfile *objfile)
}
if (bp_modified)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
}
@@ -8250,7 +8250,7 @@ install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_
set_tracepoint_count (breakpoint_count);
if (!internal)
mention (b);
- observer_notify_breakpoint_created (b);
+ gdb::observers::breakpoint_created.notify (b);
if (update_gll)
update_global_location_list (UGLL_MAY_INSERT);
@@ -9989,7 +9989,7 @@ break_range_command (const char *arg, int from_tty)
b->loc->length = length;
mention (b);
- observer_notify_breakpoint_created (b);
+ gdb::observers::breakpoint_created.notify (b);
update_global_location_list (UGLL_MAY_INSERT);
}
@@ -11744,7 +11744,7 @@ download_tracepoint_locations (void)
t = (struct tracepoint *) b;
t->number_on_target = b->number;
if (bp_location_downloaded)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
}
@@ -13257,7 +13257,7 @@ delete_breakpoint (struct breakpoint *bpt)
a problem in that process, we'll be asked to delete the half-created
watchpoint. In that case, don't announce the deletion. */
if (bpt->number)
- observer_notify_breakpoint_deleted (bpt);
+ gdb::observers::breakpoint_deleted.notify (bpt);
if (breakpoint_chain == bpt)
breakpoint_chain = bpt->next;
@@ -13732,7 +13732,7 @@ update_breakpoint_locations (struct breakpoint *b,
}
if (!locations_are_equal (existing_locations, b->loc))
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
/* Find the SaL locations corresponding to the given LOCATION.
@@ -14029,7 +14029,7 @@ set_ignore_count (int bptnum, int count, int from_tty)
"crossings of breakpoint %d."),
count, bptnum);
}
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
return;
}
@@ -14332,7 +14332,7 @@ disable_breakpoint (struct breakpoint *bpt)
update_global_location_list (UGLL_DONT_INSERT);
- observer_notify_breakpoint_modified (bpt);
+ gdb::observers::breakpoint_modified.notify (bpt);
}
/* Enable or disable the breakpoint(s) or breakpoint location(s)
@@ -14458,7 +14458,7 @@ enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition,
bpt->enable_count = count;
update_global_location_list (UGLL_MAY_INSERT);
- observer_notify_breakpoint_modified (bpt);
+ gdb::observers::breakpoint_modified.notify (bpt);
}
@@ -14938,7 +14938,7 @@ static void
trace_pass_set_count (struct tracepoint *tp, int count, int from_tty)
{
tp->pass_count = count;
- observer_notify_breakpoint_modified (tp);
+ gdb::observers::breakpoint_modified.notify (tp);
if (from_tty)
printf_filtered (_("Setting tracepoint %d's passcount to %d\n"),
tp->number, count);
@@ -15578,9 +15578,9 @@ _initialize_breakpoint (void)
initialize_breakpoint_ops ();
- observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib);
- observer_attach_free_objfile (disable_breakpoints_in_freed_objfile);
- observer_attach_memory_changed (invalidate_bp_value_on_memory_change);
+ gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib);
+ gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile);
+ gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change);
breakpoint_objfile_key
= register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data);
@@ -16131,6 +16131,6 @@ agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
automatic_hardware_breakpoints = 1;
- observer_attach_about_to_proceed (breakpoint_about_to_proceed);
- observer_attach_thread_exit (remove_threaded_breakpoints);
+ gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed);
+ gdb::observers::thread_exit.attach (remove_threaded_breakpoints);
}
@@ -22,7 +22,7 @@
#include "gdbthread.h"
#include "inferior.h"
#include "objfiles.h"
-#include "observer.h"
+#include "observable.h"
#include "regcache.h"
#include "solib.h"
#include "solist.h"
@@ -554,7 +554,7 @@ _initialize_bsd_uthread (void)
bsd_uthread_data = gdbarch_data_register_pre_init (bsd_uthread_init);
- observer_attach_inferior_created (bsd_uthread_inferior_created);
- observer_attach_solib_loaded (bsd_uthread_solib_loaded);
- observer_attach_solib_unloaded (bsd_uthread_solib_unloaded);
+ gdb::observers::inferior_created.attach (bsd_uthread_inferior_created);
+ gdb::observers::solib_loaded.attach (bsd_uthread_solib_loaded);
+ gdb::observers::solib_unloaded.attach (bsd_uthread_solib_unloaded);
}
@@ -26,7 +26,7 @@
#include "top.h" /* for "execute_command" */
#include "event-top.h"
#include "infrun.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
#include "thread-fsm.h"
@@ -461,14 +461,14 @@ _initialize_cli_interp (void)
interp_factory_register (INTERP_CONSOLE, cli_interp_factory);
/* If changing this, remember to update tui-interp.c as well. */
- observer_attach_normal_stop (cli_on_normal_stop);
- observer_attach_end_stepping_range (cli_on_end_stepping_range);
- observer_attach_signal_received (cli_on_signal_received);
- observer_attach_signal_exited (cli_on_signal_exited);
- observer_attach_exited (cli_on_exited);
- observer_attach_no_history (cli_on_no_history);
- observer_attach_sync_execution_done (cli_on_sync_execution_done);
- observer_attach_command_error (cli_on_command_error);
- observer_attach_user_selected_context_changed
+ gdb::observers::normal_stop.attach (cli_on_normal_stop);
+ gdb::observers::end_stepping_range.attach (cli_on_end_stepping_range);
+ gdb::observers::signal_received.attach (cli_on_signal_received);
+ gdb::observers::signal_exited.attach (cli_on_signal_exited);
+ gdb::observers::exited.attach (cli_on_exited);
+ gdb::observers::no_history.attach (cli_on_no_history);
+ gdb::observers::sync_execution_done.attach (cli_on_sync_execution_done);
+ gdb::observers::command_error.attach (cli_on_command_error);
+ gdb::observers::user_selected_context_changed.attach
(cli_on_user_selected_context_changed);
}
@@ -20,7 +20,7 @@
#include "value.h"
#include <ctype.h>
#include "arch-utils.h"
-#include "observer.h"
+#include "observable.h"
#include "ui-out.h"
@@ -511,20 +511,20 @@ do_set_command (const char *arg, int from_tty, struct cmd_list_element *c)
case var_filename:
case var_optional_filename:
case var_enum:
- observer_notify_command_param_changed (name, *(char **) c->var);
+ gdb::observers::command_param_changed.notify (name, *(char **) c->var);
break;
case var_boolean:
{
const char *opt = *(int *) c->var ? "on" : "off";
- observer_notify_command_param_changed (name, opt);
+ gdb::observers::command_param_changed.notify (name, opt);
}
break;
case var_auto_boolean:
{
const char *s = auto_boolean_enums[*(enum auto_boolean *) c->var];
- observer_notify_command_param_changed (name, s);
+ gdb::observers::command_param_changed.notify (name, s);
}
break;
case var_uinteger:
@@ -533,7 +533,7 @@ do_set_command (const char *arg, int from_tty, struct cmd_list_element *c)
char s[64];
xsnprintf (s, sizeof s, "%u", *(unsigned int *) c->var);
- observer_notify_command_param_changed (name, s);
+ gdb::observers::command_param_changed.notify (name, s);
}
break;
case var_integer:
@@ -543,7 +543,7 @@ do_set_command (const char *arg, int from_tty, struct cmd_list_element *c)
char s[64];
xsnprintf (s, sizeof s, "%d", *(int *) c->var);
- observer_notify_command_param_changed (name, s);
+ gdb::observers::command_param_changed.notify (name, s);
}
break;
}
new file mode 100644
@@ -0,0 +1,119 @@
+/* Observers
+
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#if !defined (GDB_COMMON_OBSERVABLE_H)
+#define GDB_COMMON_OBSERVABLE_H
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+
+namespace gdb
+{
+
+namespace observers
+{
+
+extern unsigned int observer_debug;
+
+/* An observer is an entity which is interested in being notified
+ when GDB reaches certain states, or certain events occur in GDB.
+ The entity being observed is called the observable. To receive
+ notifications, the observer attaches a callback to the observable.
+ One observable can have several observers.
+
+ The observer implementation is also currently not reentrant. In
+ particular, it is therefore not possible to call the attach or
+ detach routines during a notification. */
+
+/* The type of a key that can be passed to attach, which can be passed
+ to detach to remove associated observers. Tokens have address
+ identity, and are thus usually const globals. */
+struct token
+{
+ token () = default;
+
+ DISABLE_COPY_AND_ASSIGN (token);
+};
+
+template<typename... T>
+class observable
+{
+public:
+
+ typedef std::function<void (T...)> func_type;
+
+ explicit observable (const char *name)
+ : m_name (name)
+ {
+ }
+
+ DISABLE_COPY_AND_ASSIGN (observable);
+
+ /* Attach F as an observer to this observable. F cannot be
+ detached. */
+ void attach (const func_type &f)
+ {
+ m_observers.emplace_back (nullptr, f);
+ }
+
+ /* Attach F as an observer to this observable. T is a reference to
+ a token that can be used to later remove F. */
+ void attach (const func_type &f, const token &t)
+ {
+ m_observers.emplace_back (&t, f);
+ }
+
+ /* Remove observers associated with T from this observable. T is
+ the token that was previously passed to any number of "attach"
+ calls. */
+ void detach (const token &t)
+ {
+ auto iter = std::remove_if (m_observers.begin (),
+ m_observers.end (),
+ [&] (const std::pair<const token *,
+ func_type> &e)
+ {
+ return e.first == &t;
+ });
+
+ m_observers.erase (iter, m_observers.end ());
+ }
+
+ /* Notify all observers that are attached to this observable. */
+ void notify (T... args) const
+ {
+ if (observer_debug)
+ fprintf_unfiltered (gdb_stdlog, "observable %s notify() called\n",
+ m_name);
+ for (auto &&e : m_observers)
+ e.second (args...);
+ }
+
+private:
+
+ std::vector<std::pair<const token *, func_type>> m_observers;
+ const char *m_name;
+};
+
+} /* namespace observers */
+
+} /* namespace gdb */
+
+#endif /* GDB_COMMON_OBSERVABLE_H */
@@ -30,7 +30,7 @@
#include "dis-asm.h"
#include <sys/stat.h>
#include "completer.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-utils.h"
/* You can have any number of hooks for `exec_file_command' command to
@@ -408,7 +408,7 @@ write_memory_with_notification (CORE_ADDR memaddr, const bfd_byte *myaddr,
ssize_t len)
{
write_memory (memaddr, myaddr, len);
- observer_notify_memory_changed (current_inferior (), memaddr, len, myaddr);
+ gdb::observers::memory_changed.notify (current_inferior (), memaddr, len, myaddr);
}
/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned
@@ -658,7 +658,7 @@ enum block_enum
FIRST_LOCAL_BLOCK = 2
};
-/* User selection used in observer.h and multiple print functions. */
+/* User selection used in observable.h and multiple print functions. */
enum user_selected_what_flag
{
deleted file mode 100644
@@ -1,313 +0,0 @@
-@c -*-texinfo-*-
-
-@c This file is part of the GDB manual.
-@c
-@c Copyright (C) 2003-2018 Free Software Foundation, Inc.
-@c
-@c See the file gdbint.texinfo for copying conditions.
-@c
-@c Also, the @deftypefun lines from this file are processed into a
-@c header file during the GDB build process. Permission is granted
-@c to redistribute and/or modify those lines under the terms of the
-@c GNU General Public License as published by the Free Software
-@c Foundation; either version 3 of the License, or (at your option)
-@c any later version.
-
-@node GDB Observers
-@appendix @value{GDBN} Currently available observers
-
-@section Implementation rationale
-@cindex observers implementation rationale
-
-An @dfn{observer} is an entity which is interested in being notified
-when GDB reaches certain states, or certain events occur in GDB.
-The entity being observed is called the @dfn{subject}. To receive
-notifications, the observer attaches a callback to the subject.
-One subject can have several observers.
-
-@file{observer.c} implements an internal generic low-level event
-notification mechanism. This generic event notification mechanism is
-then re-used to implement the exported high-level notification
-management routines for all possible notifications.
-
-The current implementation of the generic observer provides support
-for contextual data. This contextual data is given to the subject
-when attaching the callback. In return, the subject will provide
-this contextual data back to the observer as a parameter of the
-callback.
-
-Note that the current support for the contextual data is only partial,
-as it lacks a mechanism that would deallocate this data when the
-callback is detached. This is not a problem so far, as this contextual
-data is only used internally to hold a function pointer. Later on, if
-a certain observer needs to provide support for user-level contextual
-data, then the generic notification mechanism will need to be
-enhanced to allow the observer to provide a routine to deallocate the
-data when attaching the callback.
-
-The observer implementation is also currently not reentrant.
-In particular, it is therefore not possible to call the attach
-or detach routines during a notification.
-
-@section Debugging
-Observer notifications can be traced using the command @samp{set debug
-observer 1} (@pxref{Debugging Output, , Optional messages about
-internal happenings, gdb, Debugging with @var{GDBN}}).
-
-@section @code{normal_stop} Notifications
-@cindex @code{normal_stop} observer
-@cindex notification about inferior execution stop
-
-@value{GDBN} notifies all @code{normal_stop} observers when the
-inferior execution has just stopped, the associated messages and
-annotations have been printed, and the control is about to be returned
-to the user.
-
-Note that the @code{normal_stop} notification is not emitted when
-the execution stops due to a breakpoint, and this breakpoint has
-a condition that is not met. If the breakpoint has any associated
-commands list, the commands are executed after the notification
-is emitted.
-
-The following interfaces are available to manage observers:
-
-@deftypefun extern struct observer *observer_attach_@var{event} (observer_@var{event}_ftype *@var{f})
-Using the function @var{f}, create an observer that is notified when
-ever @var{event} occurs, return the observer.
-@end deftypefun
-
-@deftypefun extern void observer_detach_@var{event} (struct observer *@var{observer});
-Remove @var{observer} from the list of observers to be notified when
-@var{event} occurs.
-@end deftypefun
-
-@deftypefun extern void observer_notify_@var{event} (void);
-Send a notification to all @var{event} observers.
-@end deftypefun
-
-The following observable events are defined:
-
-@deftypefun void normal_stop (struct bpstats *@var{bs}, int @var{print_frame})
-The inferior has stopped for real. The @var{bs} argument describes
-the breakpoints were are stopped at, if any. Second argument
-@var{print_frame} non-zero means display the location where the
-inferior has stopped.
-@end deftypefun
-
-@deftypefun void signal_received (enum gdb_signal @var{siggnal})
-The inferior was stopped by a signal.
-@end deftypefun
-
-@deftypefun void end_stepping_range (void)
-We are done with a step/next/si/ni command.
-@end deftypefun
-
-@deftypefun void signal_exited (enum gdb_signal @var{siggnal})
-The inferior was terminated by a signal.
-@end deftypefun
-
-@deftypefun void exited (int @var{exitstatus})
-The inferior program is finished.
-@end deftypefun
-
-@deftypefun void no_history (void)
-Reverse execution: target ran out of history info.
-@end deftypefun
-
-@deftypefun void sync_execution_done (void)
-A synchronous command finished.
-@end deftypefun
-
-@deftypefun void command_error (void)
-An error was caught while executing a command.
-@end deftypefun
-
-@deftypefun void target_changed (struct target_ops *@var{target})
-The target's register contents have changed.
-@end deftypefun
-
-@deftypefun void executable_changed (void)
-The executable being debugged by GDB has changed: The user decided
-to debug a different program, or the program he was debugging has
-been modified since being loaded by the debugger (by being recompiled,
-for instance).
-@end deftypefun
-
-@deftypefun void inferior_created (struct target_ops *@var{objfile}, int @var{from_tty})
-@value{GDBN} has just connected to an inferior. For @samp{run},
-@value{GDBN} calls this observer while the inferior is still stopped
-at the entry-point instruction. For @samp{attach} and @samp{core},
-@value{GDBN} calls this observer immediately after connecting to the
-inferior, and before any information on the inferior has been printed.
-@end deftypefun
-
-@deftypefun void record_changed (struct inferior *@var{inferior}, int @var{started}, const char *@var{method}, const char *@var{format})
-The status of process record for inferior @var{inferior} in
-@value{GDBN} has changed. The process record is started if
-@var{started} is true, and the process record is stopped if
-@var{started} is false.
-
-When @var{started} is true, @var{method} indicates the short name of the method
-used for recording. If the method supports multiple formats, @var{format}
-indicates which one is being used, otherwise it is NULL. When @var{started} is
-false, they are both NULL.
-@end deftypefun
-
-@deftypefun void solib_loaded (struct so_list *@var{solib})
-The shared library specified by @var{solib} has been loaded. Note that
-when @value{GDBN} calls this observer, the library's symbols probably
-haven't been loaded yet.
-@end deftypefun
-
-@deftypefun void solib_unloaded (struct so_list *@var{solib})
-The shared library specified by @var{solib} has been unloaded.
-Note that when @value{GDBN} calls this observer, the library's
-symbols have not been unloaded yet, and thus are still available.
-@end deftypefun
-
-@deftypefun void new_objfile (struct objfile *@var{objfile})
-The symbol file specified by @var{objfile} has been loaded.
-Called with @var{objfile} equal to @code{NULL} to indicate
-previously loaded symbol table data has now been invalidated.
-@end deftypefun
-
-@deftypefun void free_objfile (struct objfile *@var{objfile})
-The object file specified by @var{objfile} is about to be freed.
-@end deftypefun
-
-@deftypefun void new_thread (struct thread_info *@var{t})
-The thread specified by @var{t} has been created.
-@end deftypefun
-
-@deftypefun void thread_exit (struct thread_info *@var{t}, int @var{silent})
-The thread specified by @var{t} has exited. The @var{silent} argument
-indicates that @value{GDBN} is removing the thread from its tables
-without wanting to notify the user about it.
-@end deftypefun
-
-@deftypefun void thread_stop_requested (ptid_t @var{ptid})
-An explicit stop request was issued to @var{ptid}. If @var{ptid}
-equals @var{minus_one_ptid}, the request applied to all threads. If
-@code{ptid_is_pid(ptid)} returns true, the request applied to all
-threads of the process pointed at by @var{ptid}. Otherwise, the
-request applied to the single thread pointed at by @var{ptid}.
-@end deftypefun
-
-@deftypefun void target_resumed (ptid_t @var{ptid})
-The target was resumed. The @var{ptid} parameter specifies which
-thread was resume, and may be RESUME_ALL if all threads are resumed.
-@end deftypefun
-
-@deftypefun void about_to_proceed (void)
-The target is about to be proceeded.
-@end deftypefun
-
-@deftypefun void breakpoint_created (struct breakpoint *@var{b})
-A new breakpoint @var{b} has been created.
-@end deftypefun
-
-@deftypefun void breakpoint_deleted (struct breakpoint *@var{b})
-A breakpoint has been destroyed. The argument @var{b} is the
-pointer to the destroyed breakpoint.
-@end deftypefun
-
-@deftypefun void breakpoint_modified (struct breakpoint *@var{b})
-A breakpoint has been modified in some way. The argument @var{b}
-is the modified breakpoint.
-@end deftypefun
-
-@deftypefun void traceframe_changed (int @var{tfnum}, int @var{tpnum})
-The trace frame is changed to @var{tfnum} (e.g., by using the
-@code{tfind} command). If @var{tfnum} is negative, it means
-@value{GDBN} resumes live debugging. The number of the tracepoint
-associated with this traceframe is @var{tpnum}.
-@end deftypefun
-
-@deftypefun void architecture_changed (struct gdbarch *@var{newarch})
-The current architecture has changed. The argument @var{newarch} is
-a pointer to the new architecture.
-@end deftypefun
-
-@deftypefun void thread_ptid_changed (ptid_t @var{old_ptid}, ptid_t @var{new_ptid})
-The thread's ptid has changed. The @var{old_ptid} parameter specifies
-the old value, and @var{new_ptid} specifies the new value.
-@end deftypefun
-
-@deftypefun void inferior_added (struct inferior *@var{inf})
-The inferior @var{inf} has been added to the list of inferiors. At
-this point, it might not be associated with any process.
-@end deftypefun
-
-@deftypefun void inferior_appeared (struct inferior *@var{inf})
-The inferior identified by @var{inf} has been attached to a process.
-@end deftypefun
-
-@deftypefun void inferior_exit (struct inferior *@var{inf})
-Either the inferior associated with @var{inf} has been detached from the
-process, or the process has exited.
-@end deftypefun
-
-@deftypefun void inferior_removed (struct inferior *@var{inf})
-The inferior @var{inf} has been removed from the list of inferiors.
-This method is called immediately before freeing @var{inf}.
-@end deftypefun
-
-@deftypefun void memory_changed (struct inferior *@var{inferior}, CORE_ADDR @var{addr}, ssize_t @var{len}, const bfd_byte *@var{data})
-Bytes from @var{data} to @var{data} + @var{len} have been written
-to the @var{inferior} at @var{addr}.
-@end deftypefun
-
-@deftypefun void before_prompt (const char *@var{current_prompt})
-Called before a top-level prompt is displayed. @var{current_prompt} is
-the current top-level prompt.
-@end deftypefun
-
-@deftypefun void gdb_datadir_changed (void)
-Variable gdb_datadir has been set. The value may not necessarily change.
-@end deftypefun
-
-@deftypefun void command_param_changed (const char *@var{param}, const char *@var{value})
-The parameter of some @code{set} commands in console are changed. This
-method is called after a command @code{set @var{param} @var{value}}.
-@var{param} is the parameter of @code{set} command, and @var{value}
-is the value of changed parameter.
-@end deftypefun
-
-@deftypefun void tsv_created (const struct trace_state_variable *@var{tsv})
-The new trace state variable @var{tsv} is created.
-@end deftypefun
-
-@deftypefun void tsv_deleted (const struct trace_state_variable *@var{tsv})
-The trace state variable @var{tsv} is deleted. If @var{tsv} is
-@code{NULL}, all trace state variables are deleted.
-@end deftypefun
-
-@deftypefun void tsv_modified (const struct trace_state_variable *@var{tsv})
-The trace state value @var{tsv} is modified.
-@end deftypefun
-
-@deftypefun void inferior_call_pre (ptid_t @var{thread}, CORE_ADDR @var{address})
-An inferior function at @var{address} is about to be called in thread
-@var{thread}.
-@end deftypefun
-
-@deftypefun void inferior_call_post (ptid_t @var{thread}, CORE_ADDR @var{address})
-The inferior function at @var{address} has just been called. This observer
-is called even if the inferior exits during the call. @var{thread} is the
-thread in which the function was called, which may be different from the
-current thread.
-@end deftypefun
-
-@deftypefun void register_changed (struct frame_info *@var{frame}, int @var{regnum})
-A register in the inferior has been modified by the @value{GDBN} user.
-@end deftypefun
-
-@deftypefun void test_notification (int @var{somearg})
-This observer is used for internal testing. Do not use.
-See testsuite/gdb.gdb/observer.exp.
-@end deftypefun
-
-@deftypefun void user_selected_context_changed (user_selected_what @var{selection})
-The user-selected inferior, thread and/or frame has changed. The user_select_what
-flag specifies if the inferior, thread and/or frame has changed.
-@end deftypefun
@@ -26,7 +26,7 @@
#include "frame-unwind.h"
#include "command.h"
#include "gdbcmd.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
#include "infcall.h"
@@ -424,5 +424,5 @@ _initialize_dummy_frame (void)
_("Print the contents of the internal dummy-frame stack."),
&maintenanceprintlist);
- observer_attach_inferior_created (cleanup_dummy_frames);
+ gdb::observers::inferior_created.attach (cleanup_dummy_frames);
}
@@ -34,7 +34,7 @@
#include <sys/types.h>
#include "gdb_sys_time.h"
#include "gdb_select.h"
-#include "observer.h"
+#include "observable.h"
#include "top.h"
/* Tell create_file_handler what events we are interested in.
@@ -382,7 +382,7 @@ start_event_loop (void)
get around to resetting the prompt, which leaves readline
in a messed-up state. Reset it here. */
current_ui->prompt_state = PROMPT_NEEDED;
- observer_notify_command_error ();
+ gdb::observers::command_error.notify ();
/* This call looks bizarre, but it is required. If the user
entered a command that caused an error,
after_char_processing_hook won't be called from
@@ -32,7 +32,7 @@
#include "cli/cli-script.h" /* for reset_command_nest_depth */
#include "main.h"
#include "gdbthread.h"
-#include "observer.h"
+#include "observable.h"
#include "continuations.h"
#include "gdbcmd.h" /* for dont_repeat() */
#include "annotate.h"
@@ -428,7 +428,7 @@ top_level_prompt (void)
/* Give observers a chance of changing the prompt. E.g., the python
`gdb.prompt_hook' is installed as an observer. */
- observer_notify_before_prompt (get_prompt ());
+ gdb::observers::before_prompt.notify (get_prompt ());
prompt = get_prompt ();
@@ -29,7 +29,7 @@
#include "completer.h"
#include "value.h"
#include "exec.h"
-#include "observer.h"
+#include "observable.h"
#include "arch-utils.h"
#include "gdbthread.h"
#include "progspace.h"
@@ -378,7 +378,7 @@ exec_file_attach (const char *filename, int from_tty)
}
bfd_cache_close_all ();
- observer_notify_executable_changed ();
+ gdb::observers::executable_changed.notify ();
}
/* Process the first arg in ARGS as the new exec file.
@@ -28,7 +28,7 @@
#include "event-top.h"
#include "extension.h"
#include "extension-priv.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-script.h"
#include "python/python.h"
#include "guile/guile.h"
@@ -945,5 +945,5 @@ ext_lang_before_prompt (const char *current_gdb_prompt)
void
_initialize_extension (void)
{
- observer_attach_before_prompt (ext_lang_before_prompt);
+ gdb::observers::before_prompt.attach (ext_lang_before_prompt);
}
@@ -34,7 +34,7 @@
#include "frame-base.h"
#include "command.h"
#include "gdbcmd.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include "gdbthread.h"
#include "block.h"
@@ -2923,7 +2923,7 @@ _initialize_frame (void)
frame_stash_create ();
- observer_attach_target_changed (frame_observer_target_changed);
+ gdb::observers::target_changed.attach (frame_observer_target_changed);
add_prefix_cmd ("backtrace", class_maintenance, set_backtrace_cmd, _("\
Set backtrace specific variables.\n\
@@ -44,7 +44,7 @@
#include "reggroups.h"
#include "osabi.h"
#include "gdb_obstack.h"
-#include "observer.h"
+#include "observable.h"
#include "regcache.h"
#include "objfiles.h"
#include "auxv.h"
@@ -5457,7 +5457,7 @@ set_target_gdbarch (struct gdbarch *new_gdbarch)
gdb_assert (new_gdbarch != NULL);
gdb_assert (new_gdbarch->initialized_p);
current_inferior ()->gdbarch = new_gdbarch;
- observer_notify_architecture_changed (new_gdbarch);
+ gdb::observers::architecture_changed.notify (new_gdbarch);
registers_changed ();
}
@@ -25,7 +25,7 @@
#include "breakpoint.h"
#include "gdbcmd.h"
#include "gdbthread.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-script.h"
#include "ada-lang.h"
#include "arch-utils.h"
@@ -1327,8 +1327,8 @@ gdbscm_initialize_breakpoints (void)
scm_set_smob_free (breakpoint_smob_tag, bpscm_free_breakpoint_smob);
scm_set_smob_print (breakpoint_smob_tag, bpscm_print_breakpoint_smob);
- observer_attach_breakpoint_created (bpscm_breakpoint_created);
- observer_attach_breakpoint_deleted (bpscm_breakpoint_deleted);
+ gdb::observers::breakpoint_created.attach (bpscm_breakpoint_created);
+ gdb::observers::breakpoint_deleted.attach (bpscm_breakpoint_deleted);
gdbscm_define_integer_constants (breakpoint_integer_constants, 1);
gdbscm_define_functions (breakpoint_functions, 1);
@@ -29,7 +29,7 @@
#include "continuations.h"
#include "interps.h"
#include "top.h"
-#include "observer.h"
+#include "observable.h"
/* General function to handle events in the inferior. */
@@ -35,7 +35,7 @@
#include "ada-lang.h"
#include "gdbthread.h"
#include "event-top.h"
-#include "observer.h"
+#include "observable.h"
#include "top.h"
#include "interps.h"
#include "thread-fsm.h"
@@ -903,7 +903,7 @@ call_function_by_hand_dummy (struct value *function,
target_values_type = values_type;
}
- observer_notify_inferior_call_pre (inferior_ptid, funaddr);
+ gdb::observers::inferior_call_pre.notify (inferior_ptid, funaddr);
/* Determine the location of the breakpoint (and possibly other
stuff) that the called function will return to. The SPARC, for a
@@ -1176,7 +1176,7 @@ call_function_by_hand_dummy (struct value *function,
e = run_inferior_call (sm, tp, real_pc);
- observer_notify_inferior_call_post (call_thread_ptid, funaddr);
+ gdb::observers::inferior_call_post.notify (call_thread_ptid, funaddr);
tp = find_thread_ptid (call_thread_ptid);
if (tp != NULL)
@@ -42,7 +42,7 @@
#include "block.h"
#include "solib.h"
#include <ctype.h>
-#include "observer.h"
+#include "observable.h"
#include "target-descriptions.h"
#include "user-regs.h"
#include "cli/cli-decode.h"
@@ -499,7 +499,7 @@ post_create_inferior (struct target_ops *target, int from_tty)
if the now pushed target supports hardware watchpoints. */
breakpoint_re_set ();
- observer_notify_inferior_created (target, from_tty);
+ gdb::observers::inferior_created.notify (target, from_tty);
}
/* Kill the inferior if already running. This function is designed
@@ -26,7 +26,7 @@
#include "gdbcmd.h"
#include "gdbthread.h"
#include "ui-out.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbcore.h"
#include "symfile.h"
#include "environ.h"
@@ -109,7 +109,7 @@ add_inferior_silent (int pid)
last->next = inf;
}
- observer_notify_inferior_added (inf);
+ gdb::observers::inferior_added.notify (inf);
if (pid != 0)
inferior_appeared (inf, pid);
@@ -176,7 +176,7 @@ delete_inferior (struct inferior *todel)
else
inferior_list = inf->next;
- observer_notify_inferior_removed (inf);
+ gdb::observers::inferior_removed.notify (inf);
/* If this program space is rendered useless, remove it. */
if (program_space_empty_p (inf->pspace))
@@ -206,7 +206,7 @@ exit_inferior_1 (struct inferior *inftoex, int silent)
iterate_over_threads (delete_thread_of_inferior, &arg);
- observer_notify_inferior_exit (inf);
+ gdb::observers::inferior_exit.notify (inf);
inf->pid = 0;
inf->fake_pid_p = 0;
@@ -284,7 +284,7 @@ inferior_appeared (struct inferior *inf, int pid)
inf->has_exit_code = 0;
inf->exit_code = 0;
- observer_notify_inferior_appeared (inf);
+ gdb::observers::inferior_appeared.notify (inf);
}
void
@@ -713,7 +713,7 @@ inferior_command (const char *args, int from_tty)
switch_to_thread (tp->ptid);
}
- observer_notify_user_selected_context_changed
+ gdb::observers::user_selected_context_changed.notify
(USER_SELECTED_INFERIOR
| USER_SELECTED_THREAD
| USER_SELECTED_FRAME);
@@ -724,7 +724,8 @@ inferior_command (const char *args, int from_tty)
switch_to_thread (null_ptid);
set_current_program_space (inf->pspace);
- observer_notify_user_selected_context_changed (USER_SELECTED_INFERIOR);
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_INFERIOR);
}
}
@@ -24,7 +24,7 @@
#include "terminal.h"
#include "target.h"
#include "gdbthread.h"
-#include "observer.h"
+#include "observable.h"
#include <signal.h>
#include <fcntl.h>
#include "gdb_select.h"
@@ -989,7 +989,7 @@ _initialize_inflow (void)
/* OK, figure out whether we have job control. */
have_job_control ();
- observer_attach_inferior_exit (inflow_inferior_exit);
+ gdb::observers::inferior_exit.attach (inflow_inferior_exit);
inflow_inferior_data
= register_inferior_data_with_cleanup (NULL, inflow_inferior_data_cleanup);
@@ -38,7 +38,7 @@
#include "inf-loop.h"
#include "regcache.h"
#include "value.h"
-#include "observer.h"
+#include "observable.h"
#include "language.h"
#include "solib.h"
#include "main.h"
@@ -2899,7 +2899,7 @@ clear_proceed_status (int step)
inferior->control.stop_soon = NO_STOP_QUIETLY;
}
- observer_notify_about_to_proceed ();
+ gdb::observers::about_to_proceed.notify ();
}
/* Returns true if TP is still stopped at a breakpoint that needs
@@ -3816,7 +3816,7 @@ check_curr_ui_sync_execution_done (void)
&& !gdb_in_secondary_prompt_p (ui))
{
target_terminal::ours ();
- observer_notify_sync_execution_done ();
+ gdb::observers::sync_execution_done.notify ();
ui_register_input_event_handler (ui);
}
}
@@ -5069,7 +5069,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs)
/* Support the --return-child-result option. */
return_child_result_value = ecs->ws.value.integer;
- observer_notify_exited (ecs->ws.value.integer);
+ gdb::observers::exited.notify (ecs->ws.value.integer);
}
else
{
@@ -5098,7 +5098,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs)
Cannot fill $_exitsignal with the correct signal number.\n"));
}
- observer_notify_signal_exited (ecs->ws.value.sig);
+ gdb::observers::signal_exited.notify (ecs->ws.value.sig);
}
gdb_flush (gdb_stdout);
@@ -5392,7 +5392,7 @@ Cannot fill $_exitsignal with the correct signal number.\n"));
if (handle_stop_requested (ecs))
return;
- observer_notify_no_history ();
+ gdb::observers::no_history.notify ();
stop_waiting (ecs);
return;
}
@@ -6096,7 +6096,7 @@ handle_signal_stop (struct execution_control_state *ecs)
{
/* The signal table tells us to print about this signal. */
target_terminal::ours_for_output ();
- observer_notify_signal_received (ecs->event_thread->suspend.stop_signal);
+ gdb::observers::signal_received.notify (ecs->event_thread->suspend.stop_signal);
target_terminal::inferior ();
}
@@ -8205,7 +8205,7 @@ normal_stop (void)
update_thread_list ();
if (last.kind == TARGET_WAITKIND_STOPPED && stopped_by_random_signal)
- observer_notify_signal_received (inferior_thread ()->suspend.stop_signal);
+ gdb::observers::signal_received.notify (inferior_thread ()->suspend.stop_signal);
/* As with the notification of thread events, we want to delay
notifying the user that we've switched thread context until
@@ -8330,10 +8330,10 @@ normal_stop (void)
/* Notify observers about the stop. This is where the interpreters
print the stop event. */
if (!ptid_equal (inferior_ptid, null_ptid))
- observer_notify_normal_stop (inferior_thread ()->control.stop_bpstat,
+ gdb::observers::normal_stop.notify (inferior_thread ()->control.stop_bpstat,
stop_print_frame);
else
- observer_notify_normal_stop (NULL, stop_print_frame);
+ gdb::observers::normal_stop.notify (NULL, stop_print_frame);
annotate_stopped ();
@@ -9438,10 +9438,10 @@ enabled by default on some platforms."),
inferior_ptid = null_ptid;
target_last_wait_ptid = minus_one_ptid;
- observer_attach_thread_ptid_changed (infrun_thread_ptid_changed);
- observer_attach_thread_stop_requested (infrun_thread_stop_requested);
- observer_attach_thread_exit (infrun_thread_thread_exit);
- observer_attach_inferior_exit (infrun_inferior_exit);
+ gdb::observers::thread_ptid_changed.attach (infrun_thread_ptid_changed);
+ gdb::observers::thread_stop_requested.attach (infrun_thread_stop_requested);
+ gdb::observers::thread_exit.attach (infrun_thread_thread_exit);
+ gdb::observers::inferior_exit.attach (infrun_inferior_exit);
/* Explicitly create without lookup, since that tries to create a
value with a void typed value, and when we get here, gdbarch
@@ -30,7 +30,7 @@
#include "gdbcmd.h"
#include "gdbcore.h"
#include "inferior.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include "regcache.h"
#include "symfile.h"
@@ -1506,9 +1506,9 @@ _initialize_jit (void)
show_jit_debug,
&setdebuglist, &showdebuglist);
- observer_attach_inferior_created (jit_inferior_created);
- observer_attach_inferior_exit (jit_inferior_exit_hook);
- observer_attach_breakpoint_deleted (jit_breakpoint_deleted);
+ gdb::observers::inferior_created.attach (jit_inferior_created);
+ gdb::observers::inferior_exit.attach (jit_inferior_exit_hook);
+ gdb::observers::breakpoint_deleted.attach (jit_breakpoint_deleted);
jit_objfile_data =
register_objfile_data_with_cleanup (NULL, free_objfile_data);
@@ -32,7 +32,7 @@
#include "cli/cli-utils.h"
#include "arch-utils.h"
#include "gdb_obstack.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include "infcall.h"
#include "gdbcmd.h"
@@ -2513,8 +2513,8 @@ _initialize_linux_tdep (void)
linux_inferior_data
= register_inferior_data_with_cleanup (NULL, linux_inferior_data_cleanup);
/* Observers used to invalidate the cache when needed. */
- observer_attach_inferior_exit (invalidate_linux_cache_inf);
- observer_attach_inferior_appeared (invalidate_linux_cache_inf);
+ gdb::observers::inferior_exit.attach (invalidate_linux_cache_inf);
+ gdb::observers::inferior_appeared.attach (invalidate_linux_cache_inf);
add_setshow_boolean_cmd ("use-coredump-filter", class_files,
&use_coredump_filter, _("\
@@ -35,7 +35,7 @@
#include "solib.h"
#include "solib-svr4.h"
#include "gdbcore.h"
-#include "observer.h"
+#include "observable.h"
#include "linux-nat.h"
#include "nat/linux-procfs.h"
#include "nat/linux-ptrace.h"
@@ -960,7 +960,7 @@ thread_db_new_objfile (struct objfile *objfile)
if (objfile != NULL
/* libpthread with separate debug info has its debug info file already
loaded (and notified without successful thread_db initialization)
- the time observer_notify_new_objfile is called for the library itself.
+ the time gdb::observers::new_objfile.notify is called for the library itself.
Static executables have their separate debug info loaded already
before the inferior has started. */
&& objfile->separate_debug_objfile_backlink == NULL
@@ -1715,10 +1715,10 @@ Usage: info auto-load libthread-db"),
auto_load_info_cmdlist_get ());
/* Add ourselves to objfile event chain. */
- observer_attach_new_objfile (thread_db_new_objfile);
+ gdb::observers::new_objfile.attach (thread_db_new_objfile);
/* Add ourselves to inferior_created event chain.
This is needed to handle debugging statically linked programs where
the new_objfile observer won't get called for libpthread. */
- observer_attach_inferior_created (thread_db_inferior_created);
+ gdb::observers::inferior_created.attach (thread_db_inferior_created);
}
@@ -32,7 +32,7 @@
#include "glibc-tdep.h"
#include "solib-svr4.h"
#include "auxv.h"
-#include "observer.h"
+#include "observable.h"
#include "elf/common.h"
#include "linux-tdep.h"
#include "regset.h"
@@ -426,5 +426,5 @@ _initialize_m68k_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_m68k, 0, GDB_OSABI_LINUX,
m68k_linux_init_abi);
- observer_attach_inferior_created (m68k_linux_inferior_created);
+ gdb::observers::inferior_created.attach (m68k_linux_inferior_created);
}
@@ -24,7 +24,7 @@
#include "mi-out.h"
#include "breakpoint.h"
#include "mi-getopt.h"
-#include "observer.h"
+#include "observable.h"
#include "mi-main.h"
#include "mi-cmd-break.h"
#include "language.h"
@@ -84,7 +84,7 @@ setup_breakpoint_reporting (void)
{
if (! mi_breakpoint_observers_installed)
{
- observer_attach_breakpoint_created (breakpoint_notify);
+ gdb::observers::breakpoint_created.attach (breakpoint_notify);
mi_breakpoint_observers_installed = 1;
}
@@ -394,7 +394,7 @@ mi_cmd_break_passcount (const char *command, char **argv, int argc)
if (t)
{
t->pass_count = p;
- observer_notify_breakpoint_modified (t);
+ gdb::observers::breakpoint_modified.notify (t);
}
else
{
@@ -30,7 +30,7 @@
#include "mi-out.h"
#include "mi-console.h"
#include "mi-common.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
#include "solist.h"
#include "objfiles.h"
@@ -1353,33 +1353,33 @@ _initialize_mi_interp (void)
interp_factory_register (INTERP_MI3, mi_interp_factory);
interp_factory_register (INTERP_MI, mi_interp_factory);
- observer_attach_signal_received (mi_on_signal_received);
- observer_attach_end_stepping_range (mi_on_end_stepping_range);
- observer_attach_signal_exited (mi_on_signal_exited);
- observer_attach_exited (mi_on_exited);
- observer_attach_no_history (mi_on_no_history);
- observer_attach_new_thread (mi_new_thread);
- observer_attach_thread_exit (mi_thread_exit);
- observer_attach_inferior_added (mi_inferior_added);
- observer_attach_inferior_appeared (mi_inferior_appeared);
- observer_attach_inferior_exit (mi_inferior_exit);
- observer_attach_inferior_removed (mi_inferior_removed);
- observer_attach_record_changed (mi_record_changed);
- observer_attach_normal_stop (mi_on_normal_stop);
- observer_attach_target_resumed (mi_on_resume);
- observer_attach_solib_loaded (mi_solib_loaded);
- observer_attach_solib_unloaded (mi_solib_unloaded);
- observer_attach_about_to_proceed (mi_about_to_proceed);
- observer_attach_traceframe_changed (mi_traceframe_changed);
- observer_attach_tsv_created (mi_tsv_created);
- observer_attach_tsv_deleted (mi_tsv_deleted);
- observer_attach_tsv_modified (mi_tsv_modified);
- observer_attach_breakpoint_created (mi_breakpoint_created);
- observer_attach_breakpoint_deleted (mi_breakpoint_deleted);
- observer_attach_breakpoint_modified (mi_breakpoint_modified);
- observer_attach_command_param_changed (mi_command_param_changed);
- observer_attach_memory_changed (mi_memory_changed);
- observer_attach_sync_execution_done (mi_on_sync_execution_done);
- observer_attach_user_selected_context_changed
+ gdb::observers::signal_received.attach (mi_on_signal_received);
+ gdb::observers::end_stepping_range.attach (mi_on_end_stepping_range);
+ gdb::observers::signal_exited.attach (mi_on_signal_exited);
+ gdb::observers::exited.attach (mi_on_exited);
+ gdb::observers::no_history.attach (mi_on_no_history);
+ gdb::observers::new_thread.attach (mi_new_thread);
+ gdb::observers::thread_exit.attach (mi_thread_exit);
+ gdb::observers::inferior_added.attach (mi_inferior_added);
+ gdb::observers::inferior_appeared.attach (mi_inferior_appeared);
+ gdb::observers::inferior_exit.attach (mi_inferior_exit);
+ gdb::observers::inferior_removed.attach (mi_inferior_removed);
+ gdb::observers::record_changed.attach (mi_record_changed);
+ gdb::observers::normal_stop.attach (mi_on_normal_stop);
+ gdb::observers::target_resumed.attach (mi_on_resume);
+ gdb::observers::solib_loaded.attach (mi_solib_loaded);
+ gdb::observers::solib_unloaded.attach (mi_solib_unloaded);
+ gdb::observers::about_to_proceed.attach (mi_about_to_proceed);
+ gdb::observers::traceframe_changed.attach (mi_traceframe_changed);
+ gdb::observers::tsv_created.attach (mi_tsv_created);
+ gdb::observers::tsv_deleted.attach (mi_tsv_deleted);
+ gdb::observers::tsv_modified.attach (mi_tsv_modified);
+ gdb::observers::breakpoint_created.attach (mi_breakpoint_created);
+ gdb::observers::breakpoint_deleted.attach (mi_breakpoint_deleted);
+ gdb::observers::breakpoint_modified.attach (mi_breakpoint_modified);
+ gdb::observers::command_param_changed.attach (mi_command_param_changed);
+ gdb::observers::memory_changed.attach (mi_memory_changed);
+ gdb::observers::sync_execution_done.attach (mi_on_sync_execution_done);
+ gdb::observers::user_selected_context_changed.attach
(mi_user_selected_context_changed);
}
@@ -52,7 +52,7 @@
#include "linespec.h"
#include "extension.h"
#include "gdbcmd.h"
-#include "observer.h"
+#include "observable.h"
#include "common/gdb_optional.h"
#include "common/byte-vector.h"
@@ -573,8 +573,8 @@ mi_cmd_thread_select (const char *command, char **argv, int argc)
/* Notify if the thread has effectively changed. */
if (!ptid_equal (inferior_ptid, previous_ptid))
{
- observer_notify_user_selected_context_changed (USER_SELECTED_THREAD
- | USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_THREAD | USER_SELECTED_FRAME);
}
}
@@ -2024,8 +2024,8 @@ mi_execute_command (const char *cmd, int from_tty)
if (report_change)
{
- observer_notify_user_selected_context_changed
- (USER_SELECTED_THREAD | USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_THREAD | USER_SELECTED_FRAME);
}
}
}
@@ -46,7 +46,7 @@
#include "addrmap.h"
#include "arch-utils.h"
#include "exec.h"
-#include "observer.h"
+#include "observable.h"
#include "complaints.h"
#include "psymtab.h"
#include "solist.h"
@@ -617,7 +617,7 @@ free_objfile_separate_debug (struct objfile *objfile)
objfile::~objfile ()
{
/* First notify observers that this objfile is about to be freed. */
- observer_notify_free_objfile (this);
+ gdb::observers::free_objfile.notify (this);
/* Free all separate debug objfiles. */
free_objfile_separate_debug (this);
new file mode 100644
@@ -0,0 +1,99 @@
+/* GDB Notifications to Observers.
+
+ Copyright (C) 2003-2018 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+#include "observable.h"
+#include "command.h"
+#include "gdbcmd.h"
+
+namespace gdb
+{
+
+namespace observers
+{
+
+unsigned int observer_debug;
+
+#define DEFINE_OBSERVABLE(name) decltype (name) name (# name)
+
+DEFINE_OBSERVABLE (normal_stop);
+DEFINE_OBSERVABLE (signal_received);
+DEFINE_OBSERVABLE (end_stepping_range);
+DEFINE_OBSERVABLE (signal_exited);
+DEFINE_OBSERVABLE (exited);
+DEFINE_OBSERVABLE (no_history);
+DEFINE_OBSERVABLE (sync_execution_done);
+DEFINE_OBSERVABLE (command_error);
+DEFINE_OBSERVABLE (target_changed);
+DEFINE_OBSERVABLE (executable_changed);
+DEFINE_OBSERVABLE (inferior_created);
+DEFINE_OBSERVABLE (record_changed);
+DEFINE_OBSERVABLE (solib_loaded);
+DEFINE_OBSERVABLE (solib_unloaded);
+DEFINE_OBSERVABLE (new_objfile);
+DEFINE_OBSERVABLE (free_objfile);
+DEFINE_OBSERVABLE (new_thread);
+DEFINE_OBSERVABLE (thread_exit);
+DEFINE_OBSERVABLE (thread_stop_requested);
+DEFINE_OBSERVABLE (target_resumed);
+DEFINE_OBSERVABLE (about_to_proceed);
+DEFINE_OBSERVABLE (breakpoint_created);
+DEFINE_OBSERVABLE (breakpoint_deleted);
+DEFINE_OBSERVABLE (breakpoint_modified);
+DEFINE_OBSERVABLE (traceframe_changed);
+DEFINE_OBSERVABLE (architecture_changed);
+DEFINE_OBSERVABLE (thread_ptid_changed);
+DEFINE_OBSERVABLE (inferior_added);
+DEFINE_OBSERVABLE (inferior_appeared);
+DEFINE_OBSERVABLE (inferior_exit);
+DEFINE_OBSERVABLE (inferior_removed);
+DEFINE_OBSERVABLE (memory_changed);
+DEFINE_OBSERVABLE (before_prompt);
+DEFINE_OBSERVABLE (gdb_datadir_changed);
+DEFINE_OBSERVABLE (command_param_changed);
+DEFINE_OBSERVABLE (tsv_created);
+DEFINE_OBSERVABLE (tsv_deleted);
+DEFINE_OBSERVABLE (tsv_modified);
+DEFINE_OBSERVABLE (inferior_call_pre);
+DEFINE_OBSERVABLE (inferior_call_post);
+DEFINE_OBSERVABLE (register_changed);
+DEFINE_OBSERVABLE (user_selected_context_changed);
+
+} /* namespace observers */
+} /* namespace gdb */
+
+static void
+show_observer_debug (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Observer debugging is %s.\n"), value);
+}
+
+void
+_initialize_observer (void)
+{
+ add_setshow_zuinteger_cmd ("observer", class_maintenance,
+ &gdb::observers::observer_debug, _("\
+Set observer debugging."), _("\
+Show observer debugging."), _("\
+When non-zero, observer debugging is enabled."),
+ NULL,
+ show_observer_debug,
+ &setdebuglist, &showdebuglist);
+}
new file mode 100644
@@ -0,0 +1,235 @@
+/* Observers
+
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#if !defined (GDB_OBSERVER_H)
+#define GDB_OBSERVER_H
+
+#include "common/observable.h"
+
+struct bpstats;
+struct so_list;
+struct objfile;
+struct thread_info;
+struct inferior;
+struct trace_state_variable;
+
+namespace gdb
+{
+
+namespace observers
+{
+
+/* The inferior has stopped for real. The bs argument describes the
+ breakpoints were are stopped at, if any. Second argument
+ print_frame non-zero means display the location where the
+ inferior has stopped.
+
+ gdb notifies all normal_stop observers when the inferior execution
+ has just stopped, the associated messages and annotations have been
+ printed, and the control is about to be returned to the user.
+
+ Note that the normal_stop notification is not emitted when the
+ execution stops due to a breakpoint, and this breakpoint has a
+ condition that is not met. If the breakpoint has any associated
+ commands list, the commands are executed after the notification is
+ emitted. */
+extern observable<struct bpstats *, int> normal_stop;
+
+/* The inferior was stopped by a signal. */
+extern observable<enum gdb_signal> signal_received;
+
+/* We are done with a step/next/si/ni command. */
+extern observable<> end_stepping_range;
+
+/* The inferior was terminated by a signal. */
+extern observable<enum gdb_signal> signal_exited;
+
+/* The inferior program is finished. */
+extern observable<int> exited;
+
+/* Reverse execution: target ran out of history info. */
+extern observable<> no_history;
+
+/* A synchronous command finished. */
+extern observable<> sync_execution_done;
+
+/* An error was caught while executing a command. */
+extern observable<> command_error;
+
+/* The target's register contents have changed. */
+extern observable<struct target_ops *> target_changed;
+
+/* The executable being debugged by GDB has changed: The user
+ decided to debug a different program, or the program he was
+ debugging has been modified since being loaded by the debugger
+ (by being recompiled, for instance). */
+extern observable<> executable_changed;
+
+/* gdb has just connected to an inferior. For 'run', gdb calls this
+ observer while the inferior is still stopped at the entry-point
+ instruction. For 'attach' and 'core', gdb calls this observer
+ immediately after connecting to the inferior, and before any
+ information on the inferior has been printed. */
+extern observable<struct target_ops *, int> inferior_created;
+
+/* The status of process record for inferior inferior in gdb has
+ changed. The process record is started if started is true, and
+ the process record is stopped if started is false.
+
+ When started is true, method indicates the short name of the
+ method used for recording. If the method supports multiple
+ formats, format indicates which one is being used, otherwise it
+ is NULL. When started is false, they are both NULL. */
+extern observable<struct inferior *, int, const char *, const char *>
+ record_changed;
+
+/* The shared library specified by solib has been loaded. Note that
+ when gdb calls this observer, the library's symbols probably
+ haven't been loaded yet. */
+extern observable<struct so_list *> solib_loaded;
+
+/* The shared library specified by solib has been unloaded. Note
+ that when gdb calls this observer, the library's symbols have not
+ been unloaded yet, and thus are still available. */
+extern observable<struct so_list *> solib_unloaded;
+
+/* The symbol file specified by objfile has been loaded. Called
+ with objfile equal to NULL to indicate previously loaded symbol
+ table data has now been invalidated. */
+extern observable<struct objfile *> new_objfile;
+
+/* The object file specified by objfile is about to be freed. */
+extern observable<struct objfile *> free_objfile;
+
+/* The thread specified by t has been created. */
+extern observable<struct thread_info *> new_thread;
+
+/* The thread specified by t has exited. The silent argument
+ indicates that gdb is removing the thread from its tables without
+ wanting to notify the user about it. */
+extern observable<struct thread_info *, int> thread_exit;
+
+/* An explicit stop request was issued to ptid. If ptid equals
+ minus_one_ptid, the request applied to all threads. If
+ ptid_is_pid(ptid) returns true, the request applied to all
+ threads of the process pointed at by ptid. Otherwise, the
+ request applied to the single thread pointed at by ptid. */
+extern observable<ptid_t> thread_stop_requested;
+
+/* The target was resumed. The ptid parameter specifies which
+ thread was resume, and may be RESUME_ALL if all threads are
+ resumed. */
+extern observable<ptid_t> target_resumed;
+
+/* The target is about to be proceeded. */
+extern observable<> about_to_proceed;
+
+/* A new breakpoint b has been created. */
+extern observable<struct breakpoint *> breakpoint_created;
+
+/* A breakpoint has been destroyed. The argument b is the
+ pointer to the destroyed breakpoint. */
+extern observable<struct breakpoint *> breakpoint_deleted;
+
+/* A breakpoint has been modified in some way. The argument b
+ is the modified breakpoint. */
+extern observable<struct breakpoint *> breakpoint_modified;
+
+/* The trace frame is changed to tfnum (e.g., by using the 'tfind'
+ command). If tfnum is negative, it means gdb resumes live
+ debugging. The number of the tracepoint associated with this
+ traceframe is tpnum. */
+extern observable<int, int> traceframe_changed;
+
+/* The current architecture has changed. The argument newarch is a
+ pointer to the new architecture. */
+extern observable<struct gdbarch *> architecture_changed;
+
+/* The thread's ptid has changed. The old_ptid parameter specifies
+ the old value, and new_ptid specifies the new value. */
+extern observable<ptid_t, ptid_t> thread_ptid_changed;
+
+/* The inferior inf has been added to the list of inferiors. At
+ this point, it might not be associated with any process. */
+extern observable<struct inferior *> inferior_added;
+
+/* The inferior identified by inf has been attached to a
+ process. */
+extern observable<struct inferior *> inferior_appeared;
+
+/* Either the inferior associated with inf has been detached from
+ the process, or the process has exited. */
+extern observable<struct inferior *> inferior_exit;
+
+/* The inferior inf has been removed from the list of inferiors.
+ This method is called immediately before freeing inf. */
+extern observable<struct inferior *> inferior_removed;
+
+/* Bytes from data to data + len have been written to the inferior
+ at addr. */
+extern observable<struct inferior *, CORE_ADDR, ssize_t, const bfd_byte *>
+ memory_changed;
+
+/* Called before a top-level prompt is displayed. current_prompt is
+ the current top-level prompt. */
+extern observable<const char *> before_prompt;
+
+/* Variable gdb_datadir has been set. The value may not necessarily
+ change. */
+extern observable<> gdb_datadir_changed;
+
+/* The parameter of some 'set' commands in console are changed.
+ This method is called after a command 'set param value'. param
+ is the parameter of 'set' command, and value is the value of
+ changed parameter. */
+extern observable<const char *, const char *> command_param_changed;
+
+/* The new trace state variable tsv is created. */
+extern observable<const struct trace_state_variable *> tsv_created;
+
+/* The trace state variable tsv is deleted. If tsv is NULL, all
+ trace state variables are deleted. */
+extern observable<const struct trace_state_variable *> tsv_deleted;
+
+/* The trace state value tsv is modified. */
+extern observable<const struct trace_state_variable *> tsv_modified;
+
+/* An inferior function at address is about to be called in thread
+ thread. */
+extern observable<ptid_t, CORE_ADDR> inferior_call_pre;
+
+/* The inferior function at address has just been called. This
+ observer is called even if the inferior exits during the call.
+ thread is the thread in which the function was called, which may
+ be different from the current thread. */
+extern observable<ptid_t, CORE_ADDR> inferior_call_post;
+
+/* A register in the inferior has been modified by the gdb user. */
+extern observable<struct frame_info *, int> register_changed;
+
+/* The user-selected inferior, thread and/or frame has changed. The
+ user_select_what flag specifies if the inferior, thread and/or
+ frame has changed. */
+extern observable<user_selected_what> user_selected_context_changed;
+
+} /* namespace observers */
+
+} /* namespace gdb */
+
+#endif /* GDB_OBSERVER_H */
deleted file mode 100644
@@ -1,215 +0,0 @@
-/* GDB Notifications to Observers.
-
- Copyright (C) 2003-2018 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* An observer is an entity who is interested in being notified when GDB
- reaches certain states, or certain events occur in GDB. The entity being
- observed is called the Subject. To receive notifications, the observer
- attaches a callback to the subject. One subject can have several
- observers.
-
- This file implements an internal generic low-level event notification
- mechanism based on the Observer paradigm described in the book "Design
- Patterns". This generic event notification mechansim is then re-used
- to implement the exported high-level notification management routines
- for all possible notifications.
-
- The current implementation of the generic observer provides support
- for contextual data. This contextual data is given to the subject
- when attaching the callback. In return, the subject will provide
- this contextual data back to the observer as a parameter of the
- callback.
-
- FIXME: The current support for the contextual data is only partial,
- as it lacks a mechanism that would deallocate this data when the
- callback is detached. This is not a problem so far, as this contextual
- data is only used internally to hold a function pointer. Later on,
- if a certain observer needs to provide support for user-level
- contextual data, then the generic notification mechanism will need
- need to be enhanced to allow the observer to provide a routine to
- deallocate the data when attaching the callback.
-
- This file is currently maintained by hand, but the long term plan
- if the number of different notifications starts growing is to create
- a new script (observer.sh) that would generate this file, and the
- associated documentation. */
-
-#include "defs.h"
-#include "observer.h"
-#include "command.h"
-#include "gdbcmd.h"
-
-static unsigned int observer_debug;
-static void
-show_observer_debug (struct ui_file *file, int from_tty,
- struct cmd_list_element *c, const char *value)
-{
- fprintf_filtered (file, _("Observer debugging is %s.\n"), value);
-}
-
-/* The internal generic observer. */
-
-typedef void (generic_observer_notification_ftype) (const void *data,
- const void *args);
-
-struct observer
-{
- generic_observer_notification_ftype *notify;
- /* No memory management needed for the following field for now. */
- void *data;
-};
-
-/* A list of observers, maintained by the subject. A subject is
- actually represented by its list of observers. */
-
-struct observer_list
-{
- struct observer_list *next;
- struct observer *observer;
-};
-
-/* Allocate a struct observer_list, intended to be used as a node
- in the list of observers maintained by a subject. */
-
-static struct observer_list *
-xalloc_observer_list_node (void)
-{
- struct observer_list *node = XNEW (struct observer_list);
-
- node->observer = XNEW (struct observer);
- return node;
-}
-
-/* The opposite of xalloc_observer_list_node, frees the memory for
- the given node. */
-
-static void
-xfree_observer_list_node (struct observer_list *node)
-{
- xfree (node->observer);
- xfree (node);
-}
-
-/* Attach the callback NOTIFY to a SUBJECT. The DATA is also stored,
- in order for the subject to provide it back to the observer during
- a notification. */
-
-static struct observer *
-generic_observer_attach (struct observer_list **subject,
- generic_observer_notification_ftype * notify,
- void *data)
-{
- struct observer_list *observer_list = xalloc_observer_list_node ();
-
- observer_list->next = *subject;
- observer_list->observer->notify = notify;
- observer_list->observer->data = data;
- *subject = observer_list;
-
- return observer_list->observer;
-}
-
-/* Remove the given OBSERVER from the SUBJECT. Once detached, OBSERVER
- should no longer be used, as it is no longer valid. */
-
-static void
-generic_observer_detach (struct observer_list **subject,
- const struct observer *observer)
-{
- struct observer_list *previous_node = NULL;
- struct observer_list *current_node = *subject;
-
- while (current_node != NULL)
- {
- if (current_node->observer == observer)
- {
- if (previous_node != NULL)
- previous_node->next = current_node->next;
- else
- *subject = current_node->next;
- xfree_observer_list_node (current_node);
- return;
- }
- previous_node = current_node;
- current_node = current_node->next;
- }
-
- /* We should never reach this point. However, this should not be
- a very serious error, so simply report a warning to the user. */
- warning (_("Failed to detach observer"));
-}
-
-/* Send a notification to all the observers of SUBJECT. ARGS is passed to
- all observers as an argument to the notification callback. */
-
-static void
-generic_observer_notify (struct observer_list *subject, const void *args)
-{
- struct observer_list *current_node = subject;
-
- while (current_node != NULL)
- {
- (*current_node->observer->notify) (current_node->observer->data, args);
- current_node = current_node->next;
- }
-}
-
-
-/* The following code is only used to unit-test the observers from our
- testsuite. DO NOT USE IT within observer.c (or anywhere else for
- that matter)! */
-
-/* If we define these variables and functions as `static', the
- compiler will optimize them out. */
-
-int observer_test_first_observer = 0;
-int observer_test_second_observer = 0;
-int observer_test_third_observer = 0;
-
-void
-observer_test_first_notification_function (int arg)
-{
- observer_test_first_observer++;
-}
-
-void
-observer_test_second_notification_function (int arg)
-{
- observer_test_second_observer++;
-}
-
-void
-observer_test_third_notification_function (int arg)
-{
- observer_test_third_observer++;
-}
-
-void
-_initialize_observer (void)
-{
- add_setshow_zuinteger_cmd ("observer", class_maintenance,
- &observer_debug, _("\
-Set observer debugging."), _("\
-Show observer debugging."), _("\
-When non-zero, observer debugging is enabled."),
- NULL,
- show_observer_debug,
- &setdebuglist, &showdebuglist);
-}
-
-#include "observer.inc"
deleted file mode 100755
@@ -1,200 +0,0 @@
-#!/bin/sh -e
-
-# Make certain that the script is not running in an internationalized
-# environment.
-LANG=C ; export LANG
-LC_ALL=C ; export LC_ALL
-
-if test $# -ne 3
-then
- echo "Usage: $0 <h|inc> <observer.texi> <observer.out>" 1>&2
- exit 0
-fi
-
-lang=$1 ; shift
-texi=$1 ; shift
-o=$1
-case $lang in
- h) tmp=htmp ;;
- inc) tmp=itmp ;;
-esac
-otmp="`echo $1 | sed -e 's,\.[^.]*$,,'`.$tmp"; shift
-echo "Creating ${otmp}" 1>&2
-rm -f ${otmp}
-
-# Can use any of the following: cat cmp cp diff echo egrep expr false
-# grep install-info ln ls mkdir mv pwd rm rmdir sed sleep sort tar
-# test touch true
-
-cat <<EOF >>${otmp}
-/* GDB Notifications to Observers.
-
- Copyright (C) 2004-2018 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-
- --
-
- This file was generated using observer.sh and observer.texi. */
-
-EOF
-
-
-case $lang in
- h) cat <<EOF >>${otmp}
-#ifndef OBSERVER_H
-#define OBSERVER_H
-
-struct observer;
-struct bpstats;
-struct so_list;
-struct objfile;
-struct thread_info;
-struct inferior;
-struct trace_state_variable;
-EOF
- ;;
-esac
-
-# We are about to set IFS=:, so DOS-style file names with a drive
-# letter and a colon will be in trouble.
-
-if test -n "$DJGPP"
-then
- texi=`echo $texi | sed -e 's,^\([a-zA-Z]\):/,/dev/\1/,'`
-fi
-
-# generate a list of events that can be observed
-
-IFS=:
-sed -n '
-/@deftypefun void/{
-# Save original line for later processing into the actual parameter
- h
-# Convert from: @deftypefun void EVENT (TYPE @var{PARAM},...)
-# to event and formals: EVENT:TYPE PARAM, ...:
- s/^.* void \([a-z_][a-z_]*\) (\(.*\))$/\1:\2/
- s/@var{//g
- s/}//g
-# Switch to held
- x
-# Convert from: @deftypefun void FUNC (TYPE @var{PARAM},...)
-# to actuals: PARAM, ...
- s/^[^{]*[{]*//
- s/[}]*[^}]*$//
- s/}[^{]*{/, /g
-# Combine held (EVENT:TYPE PARAM, ...:) and pattern (PARAM, ...) into
-# FUNC:TYPE PARAM, ...:PARAM, ...
- H
- x
- s/\n/:/g
- p
-}
-' $texi | while read event formal actual
-do
- case $lang in
- h) cat <<EOF >>${otmp}
-
-/* ${event} notifications. */
-
-typedef void (observer_${event}_ftype) (${formal});
-
-extern struct observer *observer_attach_${event} (observer_${event}_ftype *f);
-extern void observer_detach_${event} (struct observer *observer);
-extern void observer_notify_${event} (${formal});
-EOF
- ;;
-
- inc)
- cat <<EOF >>${otmp}
-
-/* ${event} notifications. */
-
-static struct observer_list *${event}_subject = NULL;
-
-EOF
- if test "$formal" != "void"; then
- cat<<EOF >>${otmp}
-struct ${event}_args { `echo "${formal}" | sed -e 's/,/;/g'`; };
-
-EOF
- fi
- cat <<EOF >>${otmp}
-static void
-observer_${event}_notification_stub (const void *data, const void *args_data)
-{
- observer_${event}_ftype *notify = (observer_${event}_ftype *) data;
-EOF
-
- notify_args=`echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args->\1/g'`
-
- if test ! -z "${notify_args}"; then
- cat<<EOF >>${otmp}
- const struct ${event}_args *args = (const struct ${event}_args *) args_data;
-EOF
- fi
- cat <<EOF >>${otmp}
- notify (${notify_args});
-}
-
-struct observer *
-observer_attach_${event} (observer_${event}_ftype *f)
-{
- return generic_observer_attach (&${event}_subject,
- &observer_${event}_notification_stub,
- (void *) f);
-}
-
-void
-observer_detach_${event} (struct observer *observer)
-{
- generic_observer_detach (&${event}_subject, observer);
-}
-
-void
-observer_notify_${event} (${formal})
-{
-EOF
- if test "$formal" != "void"; then
- cat<<EOF >>${otmp}
- struct ${event}_args args;
- `echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args.\1 = \1/g'`;
-
-EOF
- else
- echo "char *args = NULL;" >> ${otmp}
- fi
- cat<<EOF >>${otmp}
- if (observer_debug)
- fprintf_unfiltered (gdb_stdlog, "observer_notify_${event}() called\n");
- generic_observer_notify (${event}_subject, &args);
-}
-EOF
- ;;
- esac
-done
-
-
-case $lang in
- h) cat <<EOF >>${otmp}
-
-#endif /* OBSERVER_H */
-EOF
-esac
-
-
-echo Moving ${otmp} to ${o}
-mv ${otmp} ${o}
@@ -18,7 +18,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "observer.h"
+#include "observable.h"
#include "frame.h"
#include "inferior.h"
#include "gdbthread.h"
@@ -2500,7 +2500,7 @@ _initialize_ppc_linux_nat (void)
t->to_read_description = ppc_linux_read_description;
t->to_auxv_parse = ppc_linux_auxv_parse;
- observer_attach_thread_exit (ppc_linux_thread_exit);
+ gdb::observers::thread_exit.attach (ppc_linux_thread_exit);
/* Register the target. */
linux_nat_add_target (t);
@@ -41,7 +41,7 @@
#include "trad-frame.h"
#include "frame-unwind.h"
#include "tramp-frame.h"
-#include "observer.h"
+#include "observable.h"
#include "auxv.h"
#include "elf/common.h"
#include "elf/ppc64.h"
@@ -1857,9 +1857,9 @@ _initialize_ppc_linux_tdep (void)
ppc_linux_init_abi);
/* Attach to observers to track __spe_current_active_context. */
- observer_attach_inferior_created (ppc_linux_spe_context_inferior_created);
- observer_attach_solib_loaded (ppc_linux_spe_context_solib_loaded);
- observer_attach_solib_unloaded (ppc_linux_spe_context_solib_unloaded);
+ gdb::observers::inferior_created.attach (ppc_linux_spe_context_inferior_created);
+ gdb::observers::solib_loaded.attach (ppc_linux_spe_context_solib_loaded);
+ gdb::observers::solib_unloaded.attach (ppc_linux_spe_context_solib_unloaded);
/* Initialize the Linux target descriptions. */
initialize_tdesc_powerpc_32l ();
@@ -39,7 +39,7 @@
#include "block.h"
#include "disasm.h"
#include "target-float.h"
-#include "observer.h"
+#include "observable.h"
#include "solist.h"
#include "parser-defs.h"
#include "charset.h"
@@ -2612,7 +2612,7 @@ _initialize_printcmd (void)
current_display_number = -1;
- observer_attach_free_objfile (clear_dangling_display_expressions);
+ gdb::observers::free_objfile.attach (clear_dangling_display_expressions);
add_info ("address", info_address_command,
_("Describe where symbol SYM is stored."));
@@ -45,7 +45,7 @@
#include "inflow.h"
#include "auxv.h"
#include "procfs.h"
-#include "observer.h"
+#include "observable.h"
#include "common/scoped_fd.h"
/* This module provides the interface between GDB and the
@@ -3751,7 +3751,7 @@ proc_untrace_sysexit_cmd (const char *args, int from_tty)
void
_initialize_procfs (void)
{
- observer_attach_inferior_created (procfs_inferior_created);
+ gdb::observers::inferior_created.attach (procfs_inferior_created);
add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
_("Give a trace of entries into the syscall."));
@@ -25,7 +25,7 @@
#include "breakpoint.h"
#include "gdbcmd.h"
#include "gdbthread.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-script.h"
#include "ada-lang.h"
#include "arch-utils.h"
@@ -1086,9 +1086,9 @@ gdbpy_initialize_breakpoints (void)
(PyObject *) &breakpoint_object_type) < 0)
return -1;
- observer_attach_breakpoint_created (gdbpy_breakpoint_created);
- observer_attach_breakpoint_deleted (gdbpy_breakpoint_deleted);
- observer_attach_breakpoint_modified (gdbpy_breakpoint_modified);
+ gdb::observers::breakpoint_created.attach (gdbpy_breakpoint_created);
+ gdb::observers::breakpoint_deleted.attach (gdbpy_breakpoint_deleted);
+ gdb::observers::breakpoint_modified.attach (gdbpy_breakpoint_modified);
/* Add breakpoint types constants. */
for (i = 0; pybp_codes[i].name; ++i)
@@ -26,7 +26,7 @@
#include "gdbthread.h"
#include "arch-utils.h"
#include "language.h"
-#include "observer.h"
+#include "observable.h"
#include "inferior.h"
#include "block.h"
#include "location.h"
@@ -416,8 +416,8 @@ gdbpy_initialize_finishbreakpoints (void)
(PyObject *) &finish_breakpoint_object_type) < 0)
return -1;
- observer_attach_normal_stop (bpfinishpy_handle_stop);
- observer_attach_inferior_exit (bpfinishpy_handle_exit);
+ gdb::observers::normal_stop.attach (bpfinishpy_handle_stop);
+ gdb::observers::inferior_exit.attach (bpfinishpy_handle_exit);
return 0;
}
@@ -22,7 +22,7 @@
#include "gdbthread.h"
#include "inferior.h"
#include "objfiles.h"
-#include "observer.h"
+#include "observable.h"
#include "python-internal.h"
#include "arch-utils.h"
#include "language.h"
@@ -926,18 +926,18 @@ gdbpy_initialize_inferior (void)
infpy_inf_data_key =
register_inferior_data_with_cleanup (NULL, py_free_inferior);
- observer_attach_new_thread (add_thread_object);
- observer_attach_thread_exit (delete_thread_object);
- observer_attach_normal_stop (python_on_normal_stop);
- observer_attach_target_resumed (python_on_resume);
- observer_attach_inferior_call_pre (python_on_inferior_call_pre);
- observer_attach_inferior_call_post (python_on_inferior_call_post);
- observer_attach_memory_changed (python_on_memory_change);
- observer_attach_register_changed (python_on_register_change);
- observer_attach_inferior_exit (python_inferior_exit);
- observer_attach_new_objfile (python_new_objfile);
- observer_attach_inferior_added (python_new_inferior);
- observer_attach_inferior_removed (python_inferior_deleted);
+ gdb::observers::new_thread.attach (add_thread_object);
+ gdb::observers::thread_exit.attach (delete_thread_object);
+ gdb::observers::normal_stop.attach (python_on_normal_stop);
+ gdb::observers::target_resumed.attach (python_on_resume);
+ gdb::observers::inferior_call_pre.attach (python_on_inferior_call_pre);
+ gdb::observers::inferior_call_post.attach (python_on_inferior_call_post);
+ gdb::observers::memory_changed.attach (python_on_memory_change);
+ gdb::observers::register_changed.attach (python_on_register_change);
+ gdb::observers::inferior_exit.attach (python_inferior_exit);
+ gdb::observers::new_objfile.attach (python_new_objfile);
+ gdb::observers::inferior_added.attach (python_new_inferior);
+ gdb::observers::inferior_removed.attach (python_inferior_deleted);
membuf_object_type.tp_new = PyType_GenericNew;
if (PyType_Ready (&membuf_object_type) < 0)
@@ -23,7 +23,7 @@
#include "gdb_obstack.h"
#include "gdbcmd.h"
#include "language.h"
-#include "observer.h"
+#include "observable.h"
#include "python-internal.h"
#include "regcache.h"
#include "valprint.h"
@@ -662,7 +662,7 @@ gdbpy_initialize_unwind (void)
&setdebuglist, &showdebuglist);
pyuw_gdbarch_data
= gdbarch_data_register_post_init (pyuw_gdbarch_data_init);
- observer_attach_architecture_changed (pyuw_on_new_gdbarch);
+ gdb::observers::architecture_changed.attach (pyuw_on_new_gdbarch);
if (PyType_Ready (&pending_frame_object_type) < 0)
return -1;
@@ -25,7 +25,7 @@
#include "inferior.h"
#include "command.h"
#include "ravenscar-thread.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbcmd.h"
#include "top.h"
#include "regcache.h"
@@ -632,7 +632,7 @@ _initialize_ravenscar (void)
/* Notice when the inferior is created in order to push the
ravenscar ops if needed. */
- observer_attach_inferior_created (ravenscar_inferior_created);
+ gdb::observers::inferior_created.attach (ravenscar_inferior_created);
complete_target_initialization (&ravenscar_ops);
@@ -26,7 +26,7 @@
#include "target.h"
#include "gdbcmd.h"
#include "disasm.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-utils.h"
#include "source.h"
#include "ui-out.h"
@@ -44,8 +44,9 @@
/* The target_ops of record-btrace. */
static struct target_ops record_btrace_ops;
-/* A new thread observer enabling branch tracing for the new thread. */
-static struct observer *record_btrace_thread_observer;
+/* Token associated with a new-thread observer enabling branch tracing
+ for the new thread. */
+static const gdb::observers::token record_btrace_thread_observer_token;
/* Memory access types used in set/show record btrace replay-memory-access. */
static const char replay_memory_access_read_only[] = "read-only";
@@ -166,8 +167,8 @@ record_btrace_auto_enable (void)
{
DEBUG ("attach thread observer");
- record_btrace_thread_observer
- = observer_attach_new_thread (record_btrace_enable_warn);
+ gdb::observers::new_thread.attach (record_btrace_enable_warn,
+ record_btrace_thread_observer_token);
}
/* Disable automatic tracing of new threads. */
@@ -175,14 +176,9 @@ record_btrace_auto_enable (void)
static void
record_btrace_auto_disable (void)
{
- /* The observer may have been detached, already. */
- if (record_btrace_thread_observer == NULL)
- return;
-
DEBUG ("detach thread observer");
- observer_detach_new_thread (record_btrace_thread_observer);
- record_btrace_thread_observer = NULL;
+ gdb::observers::new_thread.detach (record_btrace_thread_observer_token);
}
/* The record-btrace async event handler function. */
@@ -210,7 +206,7 @@ record_btrace_push_target (void)
record_btrace_generating_corefile = 0;
format = btrace_format_short_string (record_btrace_conf.format);
- observer_notify_record_changed (current_inferior (), 1, "btrace", format);
+ gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format);
}
/* Disable btrace on a set of threads on scope exit. */
@@ -258,8 +254,6 @@ record_btrace_open (const char *args, int from_tty)
if (!target_has_execution)
error (_("The program is not being run."));
- gdb_assert (record_btrace_thread_observer == NULL);
-
ALL_NON_EXITED_THREADS (tp)
if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num))
{
@@ -33,7 +33,7 @@
#include "event-loop.h"
#include "inf-loop.h"
#include "gdb_bfd.h"
-#include "observer.h"
+#include "observable.h"
#include "infrun.h"
#include "common/gdb_unlinker.h"
#include "common/byte-vector.h"
@@ -851,7 +851,7 @@ record_full_open (const char *name, int from_tty)
record_full_init_record_breakpoints ();
- observer_notify_record_changed (current_inferior (), 1, "full", NULL);
+ gdb::observers::record_changed.notify (current_inferior (), 1, "full", NULL);
}
/* "to_close" target method. Close the process record target. */
@@ -21,7 +21,7 @@
#include "gdbcmd.h"
#include "completer.h"
#include "record.h"
-#include "observer.h"
+#include "observable.h"
#include "inferior.h"
#include "common/common-utils.h"
#include "cli/cli-utils.h"
@@ -311,7 +311,7 @@ cmd_record_stop (const char *args, int from_tty)
printf_unfiltered (_("Process record is stopped and all execution "
"logs are deleted.\n"));
- observer_notify_record_changed (current_inferior (), 0, NULL, NULL);
+ gdb::observers::record_changed.notify (current_inferior (), 0, NULL, NULL);
}
/* The "set record" command. */
@@ -24,7 +24,7 @@
#include "gdbcmd.h"
#include "regcache.h"
#include "reggroups.h"
-#include "observer.h"
+#include "observable.h"
#include "regset.h"
#include <forward_list>
@@ -1868,8 +1868,9 @@ _initialize_regcache (void)
regcache_descr_handle
= gdbarch_data_register_post_init (init_regcache_descr);
- observer_attach_target_changed (regcache_observer_target_changed);
- observer_attach_thread_ptid_changed (regcache::regcache_thread_ptid_changed);
+ gdb::observers::target_changed.attach (regcache_observer_target_changed);
+ gdb::observers::thread_ptid_changed.attach
+ (regcache::regcache_thread_ptid_changed);
add_com ("flushregs", class_maintenance, reg_flush_command,
_("Force gdb to flush its register cache (maintainer command)"));
@@ -34,7 +34,7 @@
#include "defs.h"
#include "remote.h"
#include "remote-notif.h"
-#include "observer.h"
+#include "observable.h"
#include "event-loop.h"
#include "target.h"
#include "inferior.h"
@@ -36,7 +36,7 @@
#include "remote-notif.h"
#include "regcache.h"
#include "value.h"
-#include "observer.h"
+#include "observable.h"
#include "solib.h"
#include "cli/cli-decode.h"
#include "cli/cli-setshow.h"
@@ -3824,9 +3824,9 @@ print_one_stopped_thread (struct thread_info *thread)
enum gdb_signal sig = ws->value.sig;
if (signal_print_state (sig))
- observer_notify_signal_received (sig);
+ gdb::observers::signal_received.notify (sig);
}
- observer_notify_normal_stop (NULL, 1);
+ gdb::observers::normal_stop.notify (NULL, 1);
}
/* Process all initial stop replies the remote side sent in response
@@ -13925,10 +13925,10 @@ _initialize_remote (void)
add_target (&extended_remote_ops);
/* Hook into new objfile notification. */
- observer_attach_new_objfile (remote_new_objfile);
+ gdb::observers::new_objfile.attach (remote_new_objfile);
/* We're no longer interested in notification events of an inferior
when it exits. */
- observer_attach_inferior_exit (discard_pending_stop_replies);
+ gdb::observers::inferior_exit.attach (discard_pending_stop_replies);
#if 0
init_remote_threadtests ();
@@ -53,7 +53,7 @@
#include "common-defs.h"
#include "opcode/riscv-opc.h"
#include "cli/cli-decode.h"
-#include "observer.h"
+#include "observable.h"
/* The stack must be 16-byte aligned. */
#define SP_ALIGNMENT 16
@@ -2642,8 +2642,8 @@ _initialize_riscv_tdep (void)
= register_inferior_data_with_cleanup (NULL, riscv_inferior_data_cleanup);
/* Observers used to invalidate the inferior data when needed. */
- observer_attach_inferior_exit (riscv_invalidate_inferior_data);
- observer_attach_inferior_appeared (riscv_invalidate_inferior_data);
+ gdb::observers::inferior_exit.attach (riscv_invalidate_inferior_data);
+ gdb::observers::inferior_appeared.attach (riscv_invalidate_inferior_data);
/* Add root prefix command for all "set debug riscv" and "show debug
riscv" commands. */
@@ -33,7 +33,7 @@
#include "rs6000-tdep.h"
#include "rs6000-aix-tdep.h"
#include "exec.h"
-#include "observer.h"
+#include "observable.h"
#include "xcoffread.h"
#include <sys/ptrace.h>
@@ -63,7 +63,7 @@
#include "regcache.h"
#include "solib.h"
#include "symfile.h"
-#include "observer.h"
+#include "observable.h"
#include "procfs.h"
#include "symtab.h"
#include "minsyms.h"
@@ -1229,7 +1229,7 @@ _initialize_sol_thread (void)
_("Show info on Solaris user threads."), &maintenanceinfolist);
/* Hook into new_objfile notification. */
- observer_attach_new_objfile (sol_thread_new_objfile);
+ gdb::observers::new_objfile.attach (sol_thread_new_objfile);
return;
die:
@@ -24,7 +24,7 @@
#include "objfiles.h"
#include "symtab.h"
#include "xcoffread.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbcmd.h"
/* Variable controlling the output of the debugging traces for
@@ -791,7 +791,7 @@ _initialize_solib_aix (void)
solib_aix_inferior_data_handle = register_inferior_data ();
- observer_attach_normal_stop (solib_aix_normal_stop_observer);
+ gdb::observers::normal_stop.attach (solib_aix_normal_stop_observer);
/* Debug this file's internals. */
add_setshow_boolean_cmd ("aix-solib", class_maintenance,
@@ -30,7 +30,7 @@
#include "solist.h"
#include "inferior.h"
#include "objfiles.h"
-#include "observer.h"
+#include "observable.h"
#include "breakpoint.h"
#include "gdbthread.h"
#include "gdb_bfd.h"
@@ -545,7 +545,7 @@ spu_solib_loaded (struct so_list *so)
void
_initialize_spu_solib (void)
{
- observer_attach_solib_loaded (spu_solib_loaded);
+ gdb::observers::solib_loaded.attach (spu_solib_loaded);
ocl_program_data_key = register_objfile_data ();
}
@@ -33,7 +33,7 @@
#include "infrun.h"
#include "regcache.h"
#include "gdbthread.h"
-#include "observer.h"
+#include "observable.h"
#include "solist.h"
#include "solib.h"
@@ -38,7 +38,7 @@
#include "filenames.h" /* for DOSish file names */
#include "exec.h"
#include "solist.h"
-#include "observer.h"
+#include "observable.h"
#include "readline/readline.h"
#include "remote.h"
#include "solib.h"
@@ -826,7 +826,7 @@ update_solib_list (int from_tty)
{
/* Notify any observer that the shared object has been
unloaded before we remove it from GDB's tables. */
- observer_notify_solib_unloaded (gdb);
+ gdb::observers::solib_unloaded.notify (gdb);
current_program_space->deleted_solibs.push_back (gdb->so_name);
@@ -887,7 +887,7 @@ update_solib_list (int from_tty)
/* Notify any observer that the shared object has been
loaded now that we've added it to GDB's tables. */
- observer_notify_solib_loaded (i);
+ gdb::observers::solib_loaded.notify (i);
}
/* If a library was not found, issue an appropriate warning
@@ -1195,7 +1195,7 @@ clear_solib (void)
struct so_list *so = so_list_head;
so_list_head = so->next;
- observer_notify_solib_unloaded (so);
+ gdb::observers::solib_unloaded.notify (so);
remove_target_sections (so);
free_so (so);
}
@@ -1599,7 +1599,7 @@ _initialize_solib (void)
{
solib_data = gdbarch_data_register_pre_init (solib_init);
- observer_attach_free_objfile (remove_user_added_objfile);
+ gdb::observers::free_objfile.attach (remove_user_added_objfile);
add_com ("sharedlibrary", class_files, sharedlibrary_command,
_("Load shared object library symbols for files matching REGEXP."));
@@ -22,7 +22,7 @@
#include "gdbcore.h"
#include "gdbcmd.h"
#include "arch-utils.h"
-#include "observer.h"
+#include "observable.h"
#include "inferior.h"
#include "regcache.h"
#include "symfile.h"
@@ -410,8 +410,8 @@ _initialize_spu_multiarch (void)
complete_target_initialization (&spu_ops);
/* Install observers to watch for SPU objects. */
- observer_attach_inferior_created (spu_multiarch_inferior_created);
- observer_attach_solib_loaded (spu_multiarch_solib_loaded);
- observer_attach_solib_unloaded (spu_multiarch_solib_unloaded);
+ gdb::observers::inferior_created.attach (spu_multiarch_inferior_created);
+ gdb::observers::solib_loaded.attach (spu_multiarch_solib_loaded);
+ gdb::observers::solib_unloaded.attach (spu_multiarch_solib_unloaded);
}
@@ -39,7 +39,7 @@
#include "regcache.h"
#include "reggroups.h"
#include "block.h"
-#include "observer.h"
+#include "observable.h"
#include "infcall.h"
#include "dwarf2.h"
#include "dwarf2-frame.h"
@@ -2771,14 +2771,14 @@ _initialize_spu_tdep (void)
register_gdbarch_init (bfd_arch_spu, spu_gdbarch_init);
/* Add ourselves to objfile event chain. */
- observer_attach_new_objfile (spu_overlay_new_objfile);
+ gdb::observers::new_objfile.attach (spu_overlay_new_objfile);
spu_overlay_data = register_objfile_data ();
/* Install spu stop-on-load handler. */
- observer_attach_new_objfile (spu_catch_start);
+ gdb::observers::new_objfile.attach (spu_catch_start);
/* Add ourselves to normal_stop event chain. */
- observer_attach_normal_stop (spu_attach_normal_stop);
+ gdb::observers::normal_stop.attach (spu_attach_normal_stop);
/* Add root prefix command for all "set spu"/"show spu" commands. */
add_prefix_cmd ("spu", no_class, set_spu_command,
@@ -51,7 +51,7 @@
#include "safe-ctype.h"
#include "symfile.h"
#include "extension.h"
-#include "observer.h"
+#include "observable.h"
#include "common/def-vector.h"
/* The possible choices of "set print frame-arguments", and the value
@@ -2277,7 +2277,7 @@ select_frame_command (const char *level_exp, int from_tty)
select_frame (parse_frame_specification (level_exp, NULL));
if (get_selected_frame_if_set () != prev_frame)
- observer_notify_user_selected_context_changed (USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME);
}
/* The "frame" command. With no argument, print the selected frame
@@ -2291,7 +2291,7 @@ frame_command (const char *level_exp, int from_tty)
select_frame (parse_frame_specification (level_exp, NULL));
if (get_selected_frame_if_set () != prev_frame)
- observer_notify_user_selected_context_changed (USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME);
else
print_selected_thread_frame (current_uiout, USER_SELECTED_FRAME);
}
@@ -2324,7 +2324,7 @@ static void
up_command (const char *count_exp, int from_tty)
{
up_silently_base (count_exp);
- observer_notify_user_selected_context_changed (USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME);
}
/* Select the frame down one or COUNT_EXP stack levels from the previously
@@ -2363,7 +2363,7 @@ static void
down_command (const char *count_exp, int from_tty)
{
down_silently_base (count_exp);
- observer_notify_user_selected_context_changed (USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME);
}
void
@@ -28,7 +28,7 @@
#include "defs.h"
#include "gdbcmd.h"
#include "objfiles.h"
-#include "observer.h"
+#include "observable.h"
#include "source.h"
#include "symtab.h"
#include "symfile.h"
@@ -49,7 +49,7 @@
#include "target.h"
#include "value.h"
#include "symfile.h"
-#include "observer.h"
+#include "observable.h"
#include "auxv.h"
#include "elf/common.h"
#include "gdb_bfd.h"
@@ -229,5 +229,5 @@ _initialize_symfile_mem (void)
/* Want to know of each new inferior so that its vsyscall info can
be extracted. */
- observer_attach_inferior_created (add_vsyscall_page);
+ gdb::observers::inferior_created.attach (add_vsyscall_page);
}
@@ -46,7 +46,7 @@
#include "hashtab.h"
#include "readline/readline.h"
#include "block.h"
-#include "observer.h"
+#include "observable.h"
#include "exec.h"
#include "parser-defs.h"
#include "varobj.h"
@@ -1211,13 +1211,13 @@ symbol_file_add_with_addrs (bfd *abfd, const char *name,
if (objfile->sf == NULL)
{
- observer_notify_new_objfile (objfile);
+ gdb::observers::new_objfile.notify (objfile);
return objfile; /* No symbols. */
}
finish_new_objfile (objfile, add_flags);
- observer_notify_new_objfile (objfile);
+ gdb::observers::new_objfile.notify (objfile);
bfd_cache_close_all ();
return (objfile);
@@ -2599,14 +2599,14 @@ reread_symbols (void)
clear_symtab_users (0);
/* clear_objfile_data for each objfile was called before freeing it and
- observer_notify_new_objfile (NULL) has been called by
+ gdb::observers::new_objfile.notify (NULL) has been called by
clear_symtab_users above. Notify the new files now. */
for (auto iter : new_objfiles)
- observer_notify_new_objfile (iter);
+ gdb::observers::new_objfile.notify (objfile);
/* At least one objfile has changed, so we can consider that
the executable we're debugging has changed too. */
- observer_notify_executable_changed ();
+ gdb::observers::executable_changed.notify ();
}
}
@@ -2843,7 +2843,7 @@ clear_symtab_users (symfile_add_flags add_flags)
clear_displays ();
clear_last_displayed_sal ();
clear_pc_function_cache ();
- observer_notify_new_objfile (NULL);
+ gdb::observers::new_objfile.notify (NULL);
/* Clear globals which might have pointed into a removed objfile.
FIXME: It's not clear which of these are supposed to persist
@@ -3849,7 +3849,7 @@ _initialize_symfile (void)
{
struct cmd_list_element *c;
- observer_attach_free_objfile (symfile_free_objfile);
+ gdb::observers::free_objfile.attach (symfile_free_objfile);
#define READNOW_READNEVER_HELP \
"The '-readnow' option will cause GDB to read the entire symbol file\n\
@@ -54,7 +54,7 @@
#include <ctype.h>
#include "cp-abi.h"
#include "cp-support.h"
-#include "observer.h"
+#include "observable.h"
#include "solist.h"
#include "macrotab.h"
#include "macroscope.h"
@@ -5917,7 +5917,7 @@ If zero then the symbol cache is disabled."),
_("Flush the symbol cache for each program space."),
&maintenancelist);
- observer_attach_executable_changed (symtab_observer_executable_changed);
- observer_attach_new_objfile (symtab_new_objfile_observer);
- observer_attach_free_objfile (symtab_free_objfile_observer);
+ gdb::observers::executable_changed.attach (symtab_observer_executable_changed);
+ gdb::observers::new_objfile.attach (symtab_new_objfile_observer);
+ gdb::observers::free_objfile.attach (symtab_free_objfile_observer);
}
deleted file mode 100644
@@ -1,143 +0,0 @@
-# Copyright 2003-2018 Free Software Foundation, Inc.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-# This file was written by Joel Brobecker (brobecker@gnat.com), derived
-# from xfullpath.exp.
-
-load_lib selftest-support.exp
-
-proc attach_first_observer { message } {
- gdb_test_no_output "set \$first_obs = observer_attach_test_notification (&observer_test_first_notification_function)" \
- "$message; attach first observer"
-}
-
-proc attach_second_observer { message } {
- gdb_test_no_output "set \$second_obs = observer_attach_test_notification (&observer_test_second_notification_function)" \
- "$message; attach second observer"
-}
-
-proc attach_third_observer { message } {
- gdb_test_no_output "set \$third_obs = observer_attach_test_notification (&observer_test_third_notification_function)" \
- "$message; attach third observer"
-}
-
-proc detach_first_observer { message } {
- gdb_test_no_output "call observer_detach_test_notification (\$first_obs)" \
- "$message; detach first observer"
-}
-
-proc detach_second_observer { message } {
- gdb_test_no_output "call observer_detach_test_notification (\$second_obs)" \
- "$message; detach second observer"
-}
-
-proc detach_third_observer { message } {
- gdb_test_no_output "call observer_detach_test_notification (\$third_obs)" \
- "$message; detach third observer"
-}
-
-proc check_counters { first second third message } {
- gdb_test "print observer_test_first_observer" \
- ".\[0-9\]+ =.*$first" \
- "$message; check first observer counter value"
- gdb_test "print observer_test_second_observer" \
- ".\[0-9\]+ =.*$second" \
- "$message; check second observer counter value"
- gdb_test "print observer_test_third_observer" \
- ".\[0-9\]+ =.*$third" \
- "$message; check third observer counter value"
-}
-
-proc reset_counters { message } {
- gdb_test_no_output "set variable observer_test_first_observer = 0" \
- "$message; reset first observer counter"
- gdb_test_no_output "set variable observer_test_second_observer = 0" \
- "$message; reset second observer counter"
- gdb_test_no_output "set variable observer_test_third_observer = 0" \
- "$message; reset third observer counter"
-}
-
-proc test_notifications { first second third message args } {
- # Do any initialization
- for {set i 0} {$i < [llength $args]} {incr i} {
- [lindex $args $i] $message
- }
- reset_counters $message
- # Call observer_notify_test_notification. Note that this procedure
- # takes one argument, but this argument is ignored by the observer
- # callbacks we have installed. So we just pass an arbitrary value.
- gdb_test_no_output "call observer_notify_test_notification (0)" \
- "$message; sending notification"
- check_counters $first $second $third $message
-}
-
-proc test_observer {} {
- # First, try sending a notification without any observer attached.
- test_notifications 0 0 0 "no observer attached"
-
- # Now, attach one observer, and send a notification.
- test_notifications 0 1 0 "second observer attached" \
- attach_second_observer
-
- # Remove the observer, and send a notification.
- test_notifications 0 0 0 "second observer detached" \
- detach_second_observer
-
- # With a new observer.
- test_notifications 1 0 0 "1st observer added" \
- attach_first_observer
-
- # With 2 observers.
- test_notifications 1 1 0 "2nd observer added" \
- attach_second_observer
-
- # With 3 observers.
- test_notifications 1 1 1 "3rd observer added" \
- attach_third_observer
-
- # Remove middle observer.
- test_notifications 1 0 1 "2nd observer removed" \
- detach_second_observer
-
- # Remove first observer.
- test_notifications 0 0 1 "1st observer removed" \
- detach_first_observer
-
- # Remove last observer.
- test_notifications 0 0 0 "3rd observer removed" \
- detach_third_observer
-
- # Go back to 3 observers, and remove them in a different order...
- test_notifications 1 1 1 "three observers added" \
- attach_first_observer \
- attach_second_observer \
- attach_third_observer
-
- # Remove the third observer.
- test_notifications 1 1 0 "third observer removed" \
- detach_third_observer
-
- # Remove the second observer.
- test_notifications 1 0 0 "second observer removed" \
- detach_second_observer
-
- # Remove the first observer, no more observers.
- test_notifications 0 0 0 "first observer removed" \
- detach_first_observer
-
- return 0
-}
-
-do_self_tests captured_main test_observer
@@ -36,7 +36,7 @@
#include <sys/types.h>
#include <signal.h>
#include "ui-out.h"
-#include "observer.h"
+#include "observable.h"
#include "annotate.h"
#include "cli/cli-decode.h"
#include "gdb_regex.h"
@@ -207,7 +207,7 @@ set_thread_exited (thread_info *tp, int silent)
if (tp->state != THREAD_EXITED)
{
- observer_notify_thread_exit (tp, silent);
+ gdb::observers::thread_exit.notify (tp, silent);
/* Tag it as exited. */
tp->state = THREAD_EXITED;
@@ -299,7 +299,7 @@ add_thread_silent (ptid_t ptid)
tp->state = THREAD_STOPPED;
switch_to_thread (ptid);
- observer_notify_new_thread (tp);
+ gdb::observers::new_thread.notify (tp);
/* All done. */
return tp;
@@ -310,7 +310,7 @@ add_thread_silent (ptid_t ptid)
}
tp = new_thread (inf, ptid);
- observer_notify_new_thread (tp);
+ gdb::observers::new_thread.notify (tp);
return tp;
}
@@ -821,7 +821,7 @@ thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid)
tp = find_thread_ptid (old_ptid);
tp->ptid = new_ptid;
- observer_notify_thread_ptid_changed (old_ptid, new_ptid);
+ gdb::observers::thread_ptid_changed.notify (old_ptid, new_ptid);
}
/* See gdbthread.h. */
@@ -901,7 +901,7 @@ set_running (ptid_t ptid, int running)
any_started = 1;
}
if (any_started)
- observer_notify_target_resumed (ptid);
+ gdb::observers::target_resumed.notify (ptid);
}
static int
@@ -1000,7 +1000,7 @@ set_stop_requested (ptid_t ptid, int stop)
/* Call the stop requested observer so other components of GDB can
react to this request. */
if (stop)
- observer_notify_thread_stop_requested (ptid);
+ gdb::observers::thread_stop_requested.notify (ptid);
}
void
@@ -1037,7 +1037,7 @@ finish_thread_state (ptid_t ptid)
}
if (any_started)
- observer_notify_target_resumed (ptid);
+ gdb::observers::target_resumed.notify (ptid);
}
void
@@ -1786,8 +1786,8 @@ thread_command (const char *tidstr, int from_tty)
}
else
{
- observer_notify_user_selected_context_changed (USER_SELECTED_THREAD
- | USER_SELECTED_FRAME);
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_THREAD | USER_SELECTED_FRAME);
}
}
}
@@ -46,7 +46,7 @@
#include "gdbthread.h"
#include "extension.h"
#include "interps.h"
-#include "observer.h"
+#include "observable.h"
#include "maint.h"
#include "filenames.h"
#include "frame.h"
@@ -1959,7 +1959,7 @@ static void
set_gdb_datadir (const char *args, int from_tty, struct cmd_list_element *c)
{
set_gdb_data_directory (staged_gdb_datadir);
- observer_notify_gdb_datadir_changed ();
+ gdb::observers::gdb_datadir_changed.notify ();
}
/* "show" command for the gdb_datadir configuration variable. */
@@ -36,7 +36,7 @@
#include "completer.h"
#include "block.h"
#include "dictionary.h"
-#include "observer.h"
+#include "observable.h"
#include "user-regs.h"
#include "valprint.h"
#include "gdbcore.h"
@@ -315,7 +315,7 @@ delete_trace_state_variable (const char *name)
for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
if (strcmp (name, tsv->name) == 0)
{
- observer_notify_tsv_deleted (tsv);
+ gdb::observers::tsv_deleted.notify (tsv);
xfree ((void *)tsv->name);
VEC_unordered_remove (tsv_s, tvariables, ix);
@@ -390,7 +390,7 @@ trace_variable_command (const char *args, int from_tty)
if (tsv->initial_value != initval)
{
tsv->initial_value = initval;
- observer_notify_tsv_modified (tsv);
+ gdb::observers::tsv_modified.notify (tsv);
}
printf_filtered (_("Trace state variable $%s "
"now has initial value %s.\n"),
@@ -402,7 +402,7 @@ trace_variable_command (const char *args, int from_tty)
tsv = create_trace_state_variable (name.c_str ());
tsv->initial_value = initval;
- observer_notify_tsv_created (tsv);
+ gdb::observers::tsv_created.notify (tsv);
printf_filtered (_("Trace state variable $%s "
"created, with initial value %s.\n"),
@@ -417,7 +417,7 @@ delete_trace_variable_command (const char *args, int from_tty)
if (query (_("Delete all trace state variables? ")))
VEC_free (tsv_s, tvariables);
dont_repeat ();
- observer_notify_tsv_deleted (NULL);
+ gdb::observers::tsv_deleted.notify (NULL);
return;
}
@@ -1659,7 +1659,7 @@ start_tracing (const char *notes)
loc->gdbarch);
if (bp_location_downloaded)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
}
VEC_free (breakpoint_p, tp_vec);
@@ -2175,7 +2175,7 @@ tfind_1 (enum trace_find_type type, int num,
set_tracepoint_num (tp ? tp->number : target_tracept);
if (target_frameno != get_traceframe_number ())
- observer_notify_traceframe_changed (target_frameno, tracepoint_number);
+ gdb::observers::traceframe_changed.notify (target_frameno, tracepoint_number);
set_current_traceframe (target_frameno);
@@ -3240,7 +3240,7 @@ merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps)
/* Notify 'breakpoint-modified' observer that at least one of B's
locations was changed. */
for (ix = 0; VEC_iterate (breakpoint_p, modified_tp, ix, b); ix++)
- observer_notify_breakpoint_modified (b);
+ gdb::observers::breakpoint_modified.notify (b);
VEC_free (breakpoint_p, modified_tp);
free_uploaded_tps (uploaded_tps);
@@ -3287,7 +3287,7 @@ create_tsv_from_upload (struct uploaded_tsv *utsv)
tsv->initial_value = utsv->initial_value;
tsv->builtin = utsv->builtin;
- observer_notify_tsv_created (tsv);
+ gdb::observers::tsv_created.notify (tsv);
return tsv;
}
@@ -32,7 +32,7 @@
#include "breakpoint.h"
#include "ui-out.h"
#include "top.h"
-#include "observer.h"
+#include "observable.h"
#include <unistd.h>
#include <fcntl.h>
@@ -203,14 +203,42 @@ tui_normal_stop (struct bpstats *bs, int print_frame)
tui_refresh_frame_and_register_information (/*registers_too_p=*/1);
}
-/* Observers created when installing TUI hooks. */
-static struct observer *tui_bp_created_observer;
-static struct observer *tui_bp_deleted_observer;
-static struct observer *tui_bp_modified_observer;
-static struct observer *tui_inferior_exit_observer;
-static struct observer *tui_before_prompt_observer;
-static struct observer *tui_normal_stop_observer;
-static struct observer *tui_register_changed_observer;
+/* Token associated with observers registered while TUI hooks are
+ installed. */
+static const gdb::observers::token tui_observers_token;
+
+/* Attach or detach a single observer, according to ATTACH. */
+
+template<typename T>
+static void
+attach_or_detach (T &observable, typename T::func_type func, bool attach)
+{
+ if (attach)
+ observable.attach (func, tui_observers_token);
+ else
+ observable.detach (tui_observers_token);
+}
+
+/* Attach or detach TUI observers, according to ATTACH. */
+
+static void
+tui_attach_detach_observers (bool attach)
+{
+ attach_or_detach (gdb::observers::breakpoint_created,
+ tui_event_create_breakpoint, attach);
+ attach_or_detach (gdb::observers::breakpoint_deleted,
+ tui_event_delete_breakpoint, attach);
+ attach_or_detach (gdb::observers::breakpoint_modified,
+ tui_event_modify_breakpoint, attach);
+ attach_or_detach (gdb::observers::inferior_exit,
+ tui_inferior_exit, attach);
+ attach_or_detach (gdb::observers::before_prompt,
+ tui_before_prompt, attach);
+ attach_or_detach (gdb::observers::normal_stop,
+ tui_normal_stop, attach);
+ attach_or_detach (gdb::observers::register_changed,
+ tui_register_changed, attach);
+}
/* Install the TUI specific hooks. */
void
@@ -224,20 +252,7 @@ tui_install_hooks (void)
= tui_dummy_print_frame_info_listing_hook;
/* Install the event hooks. */
- tui_bp_created_observer
- = observer_attach_breakpoint_created (tui_event_create_breakpoint);
- tui_bp_deleted_observer
- = observer_attach_breakpoint_deleted (tui_event_delete_breakpoint);
- tui_bp_modified_observer
- = observer_attach_breakpoint_modified (tui_event_modify_breakpoint);
- tui_inferior_exit_observer
- = observer_attach_inferior_exit (tui_inferior_exit);
- tui_before_prompt_observer
- = observer_attach_before_prompt (tui_before_prompt);
- tui_normal_stop_observer
- = observer_attach_normal_stop (tui_normal_stop);
- tui_register_changed_observer
- = observer_attach_register_changed (tui_register_changed);
+ tui_attach_detach_observers (true);
}
/* Remove the TUI specific hooks. */
@@ -246,26 +261,14 @@ tui_remove_hooks (void)
{
deprecated_print_frame_info_listing_hook = 0;
deprecated_query_hook = 0;
+
/* Remove our observers. */
- observer_detach_breakpoint_created (tui_bp_created_observer);
- tui_bp_created_observer = NULL;
- observer_detach_breakpoint_deleted (tui_bp_deleted_observer);
- tui_bp_deleted_observer = NULL;
- observer_detach_breakpoint_modified (tui_bp_modified_observer);
- tui_bp_modified_observer = NULL;
- observer_detach_inferior_exit (tui_inferior_exit_observer);
- tui_inferior_exit_observer = NULL;
- observer_detach_before_prompt (tui_before_prompt_observer);
- tui_before_prompt_observer = NULL;
- observer_detach_normal_stop (tui_normal_stop_observer);
- tui_normal_stop_observer = NULL;
- observer_detach_register_changed (tui_register_changed_observer);
- tui_register_changed_observer = NULL;
+ tui_attach_detach_observers (false);
}
void
_initialize_tui_hooks (void)
{
/* Install the permanent hooks. */
- observer_attach_new_objfile (tui_new_objfile_hook);
+ gdb::observers::new_objfile.attach (tui_new_objfile_hook);
}
@@ -31,7 +31,7 @@
#include "tui/tui.h"
#include "tui/tui-io.h"
#include "infrun.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
/* Set to 1 when the TUI mode must be activated when we first start
@@ -326,14 +326,14 @@ _initialize_tui_interp (void)
}
/* If changing this, remember to update cli-interp.c as well. */
- observer_attach_normal_stop (tui_on_normal_stop);
- observer_attach_signal_received (tui_on_signal_received);
- observer_attach_end_stepping_range (tui_on_end_stepping_range);
- observer_attach_signal_exited (tui_on_signal_exited);
- observer_attach_exited (tui_on_exited);
- observer_attach_no_history (tui_on_no_history);
- observer_attach_sync_execution_done (tui_on_sync_execution_done);
- observer_attach_command_error (tui_on_command_error);
- observer_attach_user_selected_context_changed
+ gdb::observers::normal_stop.attach (tui_on_normal_stop);
+ gdb::observers::signal_received.attach (tui_on_signal_received);
+ gdb::observers::end_stepping_range.attach (tui_on_end_stepping_range);
+ gdb::observers::signal_exited.attach (tui_on_signal_exited);
+ gdb::observers::exited.attach (tui_on_exited);
+ gdb::observers::no_history.attach (tui_on_no_history);
+ gdb::observers::sync_execution_done.attach (tui_on_sync_execution_done);
+ gdb::observers::command_error.attach (tui_on_command_error);
+ gdb::observers::user_selected_context_changed.attach
(tui_on_user_selected_context_changed);
}
new file mode 100644
@@ -0,0 +1,135 @@
+/* Self tests for gdb::observers, GDB notifications to observers.
+
+ Copyright (C) 2003-2018 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+#include "selftest.h"
+#include "common/observable.h"
+
+namespace selftests {
+namespace observers {
+
+gdb::observers::observable<int> test_notification ("test_notification");
+
+static int test_first_observer = 0;
+static int test_second_observer = 0;
+static int test_third_observer = 0;
+
+static void
+test_first_notification_function (int arg)
+{
+ test_first_observer++;
+}
+
+static void
+test_second_notification_function (int arg)
+{
+ test_second_observer++;
+}
+
+static void
+test_third_notification_function (int arg)
+{
+ test_third_observer++;
+}
+
+static void
+notify_check_counters (int one, int two, int three)
+{
+ /* Reset. */
+ test_first_observer = 0;
+ test_second_observer = 0;
+ test_third_observer = 0;
+ /* Notify. */
+ test_notification.notify (0);
+ /* Check. */
+ SELF_CHECK (one == test_first_observer);
+ SELF_CHECK (two == test_second_observer);
+ SELF_CHECK (three == test_third_observer);
+}
+
+static void
+run_tests ()
+{
+ /* First, try sending a notification without any observer
+ attached. */
+ notify_check_counters (0, 0, 0);
+
+ const gdb::observers::token token1, token2, token3;
+
+ /* Now, attach one observer, and send a notification. */
+ test_notification.attach (&test_second_notification_function, token2);
+ notify_check_counters (0, 1, 0);
+
+ /* Remove the observer, and send a notification. */
+ test_notification.detach (token2);
+ notify_check_counters (0, 0, 0);
+
+ /* With a new observer. */
+ test_notification.attach (&test_first_notification_function, token1);
+ notify_check_counters (1, 0, 0);
+
+ /* With 2 observers. */
+ test_notification.attach (&test_second_notification_function, token2);
+ notify_check_counters (1, 1, 0);
+
+ /* With 3 observers. */
+ test_notification.attach (&test_third_notification_function, token3);
+ notify_check_counters (1, 1, 1);
+
+ /* Remove middle observer. */
+ test_notification.detach (token2);
+ notify_check_counters (1, 0, 1);
+
+ /* Remove first observer. */
+ test_notification.detach (token1);
+ notify_check_counters (0, 0, 1);
+
+ /* Remove last observer. */
+ test_notification.detach (token3);
+ notify_check_counters (0, 0, 0);
+
+ /* Go back to 3 observers, and remove them in a different
+ order... */
+ test_notification.attach (&test_first_notification_function, token1);
+ test_notification.attach (&test_second_notification_function, token2);
+ test_notification.attach (&test_third_notification_function, token3);
+ notify_check_counters (1, 1, 1);
+
+ /* Remove the third observer. */
+ test_notification.detach (token3);
+ notify_check_counters (1, 1, 0);
+
+ /* Remove the second observer. */
+ test_notification.detach (token2);
+ notify_check_counters (1, 0, 0);
+
+ /* Remove first observer, no more observers. */
+ test_notification.detach (token1);
+ notify_check_counters (0, 0, 0);
+}
+
+} /* namespace observers */
+} /* namespace selftests */
+
+void
+_initialize_observer_selftest ()
+{
+ selftests::register_test ("gdb::observers",
+ selftests::observers::run_tests);
+}
@@ -36,7 +36,7 @@
#include "cp-support.h"
#include "target-float.h"
#include "tracepoint.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include "extension.h"
#include "byte-vector.h"
@@ -1177,7 +1177,7 @@ value_assign (struct value *toval, struct value *fromval)
}
}
- observer_notify_register_changed (frame, value_reg);
+ gdb::observers::register_changed.notify (frame, value_reg);
break;
}
@@ -1208,7 +1208,7 @@ value_assign (struct value *toval, struct value *fromval)
case lval_register:
case lval_computed:
- observer_notify_target_changed (¤t_target);
+ gdb::observers::target_changed.notify (¤t_target);
/* Having destroyed the frame cache, restore the selected
frame. */