@@ -66,15 +66,20 @@ struct substitute_path_rule
static struct substitute_path_rule *substitute_path_rules = NULL;
-/* Symtab of default file for listing lines of. */
+/* An instance of this is attached to each program space. */
-static struct symtab *current_source_symtab;
+struct current_source_location
+{
+ /* Symtab of default file for listing lines of. */
+
+ struct symtab *symtab = nullptr;
-/* Default next line to list. */
+ /* Default next line to list. */
-static int current_source_line;
+ int line = 0;
+};
-static struct program_space *current_source_pspace;
+static program_space_key<current_source_location> current_source_key;
/* Default number of lines to print with commands like "list".
This is based on guessing how many long (i.e. more than chars_per_line
@@ -162,6 +167,19 @@ get_lines_to_list (void)
return lines_to_list;
}
+/* A helper to return the current source location object for PSPACE,
+ creating it if it does not exist. */
+
+static current_source_location *
+get_source_location (program_space *pspace)
+{
+ current_source_location *loc
+ = current_source_key.get (pspace);
+ if (loc == nullptr)
+ loc = current_source_key.emplace (pspace);
+ return loc;
+}
+
/* Return the current source file for listing and next line to list.
NOTE: The returned sal pc and end fields are not valid. */
@@ -169,10 +187,11 @@ struct symtab_and_line
get_current_source_symtab_and_line (void)
{
symtab_and_line cursal;
+ current_source_location *loc = get_source_location (current_program_space);
- cursal.pspace = current_source_pspace;
- cursal.symtab = current_source_symtab;
- cursal.line = current_source_line;
+ cursal.pspace = current_program_space;
+ cursal.symtab = loc->symtab;
+ cursal.line = loc->line;
cursal.pc = 0;
cursal.end = 0;
@@ -194,7 +213,8 @@ set_default_source_symtab_and_line (void)
error (_("No symbol table is loaded. Use the \"file\" command."));
/* Pull in a current source symtab if necessary. */
- if (current_source_symtab == 0)
+ current_source_location *loc = get_source_location (current_program_space);
+ if (loc->symtab == nullptr)
select_source_symtab (0);
}
@@ -208,15 +228,16 @@ set_current_source_symtab_and_line (const symtab_and_line &sal)
{
symtab_and_line cursal;
- cursal.pspace = current_source_pspace;
- cursal.symtab = current_source_symtab;
- cursal.line = current_source_line;
+ current_source_location *loc = get_source_location (sal.pspace);
+
+ cursal.pspace = sal.pspace;
+ cursal.symtab = loc->symtab;
+ cursal.line = loc->line;
cursal.pc = 0;
cursal.end = 0;
- current_source_pspace = sal.pspace;
- current_source_symtab = sal.symtab;
- current_source_line = sal.line;
+ loc->symtab = sal.symtab;
+ loc->line = sal.line;
/* Force the next "list" to center around the current line. */
clear_lines_listed_range ();
@@ -229,8 +250,9 @@ set_current_source_symtab_and_line (const symtab_and_line &sal)
void
clear_current_source_symtab_and_line (void)
{
- current_source_symtab = 0;
- current_source_line = 0;
+ current_source_location *loc = get_source_location (current_program_space);
+ loc->symtab = nullptr;
+ loc->line = 0;
}
/* See source.h. */
@@ -240,13 +262,15 @@ select_source_symtab (struct symtab *s)
{
if (s)
{
- current_source_symtab = s;
- current_source_line = 1;
- current_source_pspace = SYMTAB_PSPACE (s);
+ current_source_location *loc
+ = get_source_location (SYMTAB_PSPACE (s));
+ loc->symtab = s;
+ loc->line = 1;
return;
}
- if (current_source_symtab)
+ current_source_location *loc = get_source_location (current_program_space);
+ if (loc->symtab != nullptr)
return;
/* Make the default place to list be the function `main'
@@ -255,16 +279,15 @@ select_source_symtab (struct symtab *s)
if (bsym.symbol != nullptr && SYMBOL_CLASS (bsym.symbol) == LOC_BLOCK)
{
symtab_and_line sal = find_function_start_sal (bsym.symbol, true);
- current_source_pspace = sal.pspace;
- current_source_symtab = sal.symtab;
- current_source_line = std::max (sal.line - (lines_to_list - 1), 1);
+ loc->symtab = sal.symtab;
+ loc->line = std::max (sal.line - (lines_to_list - 1), 1);
return;
}
/* Alright; find the last file in the symtab list (ignoring .h's
and namespace symtabs). */
- current_source_line = 1;
+ loc->line = 1;
for (objfile *ofp : current_program_space->objfiles ())
{
@@ -277,15 +300,12 @@ select_source_symtab (struct symtab *s)
if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
|| strcmp (name, "<<C++-namespaces>>") == 0)))
- {
- current_source_pspace = current_program_space;
- current_source_symtab = symtab;
- }
+ loc->symtab = symtab;
}
}
}
- if (current_source_symtab)
+ if (loc->symtab != nullptr)
return;
for (objfile *objfile : current_program_space->objfiles ())
@@ -293,9 +313,9 @@ select_source_symtab (struct symtab *s)
if (objfile->sf)
s = objfile->sf->qf->find_last_source_symtab (objfile);
if (s)
- current_source_symtab = s;
+ loc->symtab = s;
}
- if (current_source_symtab)
+ if (loc->symtab != nullptr)
return;
error (_("Can't find a default source file"));
@@ -619,7 +639,9 @@ add_path (const char *dirname, char **which_path, int parse_separators)
static void
info_source_command (const char *ignore, int from_tty)
{
- struct symtab *s = current_source_symtab;
+ current_source_location *loc
+ = get_source_location (current_program_space);
+ struct symtab *s = loc->symtab;
struct compunit_symtab *cust;
if (!s)
@@ -1178,8 +1200,11 @@ print_source_lines_base (struct symtab *s, int line, int stopline,
struct ui_out *uiout = current_uiout;
/* Regardless of whether we can open the file, set current_source_symtab. */
- current_source_symtab = s;
- current_source_line = line;
+ current_source_location *loc
+ = get_source_location (current_program_space);
+
+ loc->symtab = s;
+ loc->line = line;
first_line_listed = line;
/* If printing of source lines is disabled, just print file and line
@@ -1273,13 +1298,13 @@ print_source_lines_base (struct symtab *s, int line, int stopline,
{
char buf[20];
- last_line_listed = current_source_line;
+ last_line_listed = loc->line;
if (flags & PRINT_SOURCE_LINES_FILENAME)
{
uiout->text (symtab_to_filename_for_display (s));
uiout->text (":");
}
- xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++);
+ xsnprintf (buf, sizeof (buf), "%d\t", loc->line++);
uiout->text (buf);
while (*iter != '\0')
@@ -1371,12 +1396,14 @@ info_line_command (const char *arg, int from_tty)
if (arg == 0)
{
- curr_sal.symtab = current_source_symtab;
+ current_source_location *loc
+ = get_source_location (current_program_space);
+ curr_sal.symtab = loc->symtab;
curr_sal.pspace = current_program_space;
if (last_line_listed != 0)
curr_sal.line = last_line_listed;
else
- curr_sal.line = current_source_line;
+ curr_sal.line = loc->line;
sals = curr_sal;
}
@@ -1478,12 +1505,14 @@ search_command_helper (const char *regex, int from_tty, bool forward)
if (msg)
error (("%s"), msg);
- if (current_source_symtab == 0)
+ current_source_location *loc
+ = get_source_location (current_program_space);
+ if (loc->symtab == nullptr)
select_source_symtab (0);
- scoped_fd desc (open_source_file (current_source_symtab));
+ scoped_fd desc (open_source_file (loc->symtab));
if (desc.get () < 0)
- perror_with_name (symtab_to_filename_for_display (current_source_symtab));
+ perror_with_name (symtab_to_filename_for_display (loc->symtab));
int line = (forward
? last_line_listed + 1
@@ -1491,12 +1520,12 @@ search_command_helper (const char *regex, int from_tty, bool forward)
const std::vector<off_t> *offsets;
if (line < 1
- || !g_source_cache.get_line_charpos (current_source_symtab, &offsets)
+ || !g_source_cache.get_line_charpos (loc->symtab, &offsets)
|| line > offsets->size ())
error (_("Expression not found"));
if (lseek (desc.get (), (*offsets)[line - 1], 0) < 0)
- perror_with_name (symtab_to_filename_for_display (current_source_symtab));
+ perror_with_name (symtab_to_filename_for_display (loc->symtab));
gdb_file_up stream = desc.to_file (FDOPEN_MODE);
clearerr (stream.get ());
@@ -1531,9 +1560,9 @@ search_command_helper (const char *regex, int from_tty, bool forward)
if (re_exec (buf.data ()) > 0)
{
/* Match! */
- print_source_lines (current_source_symtab, line, line + 1, 0);
+ print_source_lines (loc->symtab, line, line + 1, 0);
set_internalvar_integer (lookup_internalvar ("_"), line);
- current_source_line = std::max (line - lines_to_list / 2, 1);
+ loc->line = std::max (line - lines_to_list / 2, 1);
return;
}
@@ -1547,7 +1576,7 @@ search_command_helper (const char *regex, int from_tty, bool forward)
if (fseek (stream.get (), (*offsets)[line - 1], 0) < 0)
{
const char *filename
- = symtab_to_filename_for_display (current_source_symtab);
+ = symtab_to_filename_for_display (loc->symtab);
perror_with_name (filename);
}
}
@@ -1811,7 +1840,6 @@ _initialize_source (void)
{
struct cmd_list_element *c;
- current_source_symtab = 0;
init_source_path ();
/* The intention is to use POSIX Basic Regular Expressions.