[08/15] Remove tui_alloc_source_buffer
Commit Message
There is no longer any need for tui_alloc_source_buffer. The two
callers of this function immediately change the contents of the
window, undoing the work done by this function.
This required adding a move constructor to tui_source_element -- a
mildly surprising find, but without this, resizing the vector will
cause crashes. This issue was masked earlier because
tui_alloc_source_buffer handled this.
Note that a patch for this bug was submitted here:
https://sourceware.org/ml/gdb-patches/2019-08/msg00094.html
That patch is better, IMO, but the author as yet hasn't responded to a
request for a ChangeLog entry.
gdb/ChangeLog
2019-08-14 Tom Tromey <tom@tromey.com>
* tui/tui-winsource.h (tui_alloc_source_buffer): Don't declare.
(struct tui_source_element): Add DISABLE_COPY_AND_ASSIGN, and move
constructor.
* tui/tui-winsource.c (tui_alloc_source_buffer): Remove.
* tui/tui-source.c (tui_set_source_content): Update.
* tui/tui-disasm.c (tui_set_disassem_content): Update.
---
gdb/ChangeLog | 9 +++++++++
gdb/tui/tui-disasm.c | 2 --
gdb/tui/tui-source.c | 1 -
gdb/tui/tui-winsource.c | 20 --------------------
gdb/tui/tui-winsource.h | 14 +++++++++++---
5 files changed, 20 insertions(+), 26 deletions(-)
@@ -179,8 +179,6 @@ tui_set_disassem_content (tui_source_window_base *win_info,
if (pc == 0)
return TUI_FAILURE;
- tui_alloc_source_buffer (win_info);
-
win_info->gdbarch = gdbarch;
win_info->start_line_or_addr.loa = LOA_ADDRESS;
win_info->start_line_or_addr.u.addr = pc;
@@ -135,7 +135,6 @@ tui_set_source_content (tui_source_window_base *win_info,
int line_width, nlines;
ret = TUI_SUCCESS;
- tui_alloc_source_buffer (win_info);
line_width = win_info->width - 1;
/* Take hilite (window border) into account, when
calculating the number of lines. */
@@ -620,23 +620,3 @@ tui_source_window_base::update_exec_info ()
}
execution_info->refresh_window ();
}
-
-
-void
-tui_alloc_source_buffer (struct tui_source_window_base *win_info)
-{
- int i, line_width, max_lines;
-
- /* The window width/height includes the highlight box. Determine actual
- content dimensions, including string null-terminators. */
- max_lines = win_info->height - 2;
- line_width = win_info->width - 2 + 1;
-
- /* Allocate the buffer for the source lines. */
- win_info->content.resize (max_lines);
- for (i = 0; i < max_lines; i++)
- {
- if (win_info->content[i].line == nullptr)
- win_info->content[i].line = (char *) xmalloc (line_width);
- }
-}
@@ -69,6 +69,17 @@ struct tui_source_element
xfree (line);
}
+ DISABLE_COPY_AND_ASSIGN (tui_source_element);
+
+ tui_source_element (tui_source_element &&other)
+ : line (other.line),
+ line_or_addr (other.line_or_addr),
+ is_exec_point (other.is_exec_point),
+ break_mode (other.break_mode)
+ {
+ other.line = nullptr;
+ }
+
char *line = nullptr;
struct tui_line_or_address line_or_addr;
bool is_exec_point = false;
@@ -171,9 +182,6 @@ extern void tui_update_source_windows_with_line (struct symtab *,
extern void tui_clear_source_content (struct tui_source_window_base *);
extern void tui_erase_source_content (struct tui_source_window_base *);
-extern void tui_alloc_source_buffer (struct tui_source_window_base *);
-
-
/* Constant definitions. */
#define SCROLL_THRESHOLD 2 /* Threshold for lazy scroll. */