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| author | Andrew Burgess <aburgess@redhat.com> | 2023-01-05 12:26:09 +0000 |
|---|---|---|
| committer | Andrew Burgess <aburgess@redhat.com> | 2023-01-27 16:20:10 +0000 |
| commit | 99c15700fd47e59a14d6338fda7aeadf5ba480f3 (patch) | |
| tree | e833e5344268049070dc4c99b80f0873e622cf0b /gdb | |
| parent | d2a5ea5622ec7a2a3e255186c88d69812f148913 (diff) | |
| download | gdb-99c15700fd47e59a14d6338fda7aeadf5ba480f3.zip gdb-99c15700fd47e59a14d6338fda7aeadf5ba480f3.tar.gz gdb-99c15700fd47e59a14d6338fda7aeadf5ba480f3.tar.bz2 | |
gdb/tui: avoid extra refresh_window on vertical scroll
While working on the previous couple of patches I noticed that when I
scroll the src and asm windows vertically, I get two refresh_window
calls.
The two calls can be traced back to
tui_source_window_base::update_source_window_as_is, in here we call
show_source_content, which calls refresh_window, and then
update_exec_info, which also calls refresh_window.
In this commit I propose making the refresh_window call in
update_exec_info optional. In update_source_window_as_is I'll then
call update_exec_info before calling show_source_content, and pass a
flag to update_exec_info to defer the refresh.
There are places where update_exec_info is used without any subsequent
refresh_window call (e.g. when a breakpoint is updated), so
update_exec_info does not to call refresh_window in some cases, which
is why I'm using a flag to control the refresh.
With this changes I'm now only seeing a single refresh_window call for
each vertical scroll.
There should be no user visible changes after this commit.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/tui/tui-winsource.c | 12 | ||||
| -rw-r--r-- | gdb/tui/tui-winsource.h | 9 |
2 files changed, 14 insertions, 7 deletions
diff --git a/gdb/tui/tui-winsource.c b/gdb/tui/tui-winsource.c index 50efa80..b5b6079 100644 --- a/gdb/tui/tui-winsource.c +++ b/gdb/tui/tui-winsource.c @@ -172,8 +172,8 @@ tui_source_window_base::update_source_window_as_is { validate_scroll_offsets (); update_breakpoint_info (nullptr, false); + update_exec_info (false); show_source_content (); - update_exec_info (); } } @@ -636,11 +636,10 @@ tui_source_window_base::update_breakpoint_info return need_refresh; } -/* Function to initialize the content of the execution info window, - based upon the input window which is either the source or - disassembly window. */ +/* See tui-winsource.h. */ + void -tui_source_window_base::update_exec_info () +tui_source_window_base::update_exec_info (bool refresh_p) { update_breakpoint_info (nullptr, true); for (int i = 0; i < m_content.size (); i++) @@ -668,5 +667,6 @@ tui_source_window_base::update_exec_info () show_line_number (i); } - refresh_window (); + if (refresh_p) + refresh_window (); } diff --git a/gdb/tui/tui-winsource.h b/gdb/tui/tui-winsource.h index 2762aff..7370ae9 100644 --- a/gdb/tui/tui-winsource.h +++ b/gdb/tui/tui-winsource.h @@ -148,7 +148,14 @@ public: virtual bool location_matches_p (struct bp_location *loc, int line_no) = 0; - void update_exec_info (); + /* Fill in the left margin of the current window with execution indicator + information, e.g. breakpoint indicators, and line numbers. When + REFRESH_P is true this function will call refresh_window to ensure + updates are written to the screen, otherwise the refresh is skipped, + which will leave the on screen contents out of date. When passing + false for REFRESH_P you should be planning to call refresh_window + yourself. */ + void update_exec_info (bool refresh_p = true); /* Update the window to display the given location. Does nothing if the location is already displayed. */ |