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| author | Pedro Alves <palves@redhat.com> | 2020-06-17 11:56:43 +0100 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2020-06-17 11:56:43 +0100 |
| commit | b25e22fd1698b600310fc56f01b6005b5a3f6227 (patch) | |
| tree | 8b78053a001bc4dfcdaa47819f823d18260a57fb /gdb/gdbthread.h | |
| parent | a78a19b15254de31c3d38b7e27469aaef0a30e97 (diff) | |
| download | binutils-b25e22fd1698b600310fc56f01b6005b5a3f6227.zip binutils-b25e22fd1698b600310fc56f01b6005b5a3f6227.tar.gz binutils-b25e22fd1698b600310fc56f01b6005b5a3f6227.tar.bz2 | |
Update thread_control_state::trap_expected comments
The comments describing trap_expected are out of date. It
predates displaced stepping and non-stop mode ("keep other threads
stopped"). It predates stepping over watchpoints with breakpoints
inserted (keep_going_pass_signal). Says the variable is cleared
in normal_stop, when it isn't. This fixes it.
gdb/ChangeLog:
2020-06-17 Pedro Alves <palves@redhat.com>
* gdbthread.h (thread_control_state) <trap_expected> Update
comments.
Diffstat (limited to 'gdb/gdbthread.h')
| -rw-r--r-- | gdb/gdbthread.h | 26 |
1 files changed, 4 insertions, 22 deletions
diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h index 717a2ad..710b4c6 100644 --- a/gdb/gdbthread.h +++ b/gdb/gdbthread.h @@ -131,28 +131,10 @@ struct thread_control_state any inlined frames). */ struct frame_id step_stack_frame_id {}; - /* Nonzero if we are presently stepping over a breakpoint. - - If we hit a breakpoint or watchpoint, and then continue, we need - to single step the current thread with breakpoints disabled, to - avoid hitting the same breakpoint or watchpoint again. And we - should step just a single thread and keep other threads stopped, - so that other threads don't miss breakpoints while they are - removed. - - So, this variable simultaneously means that we need to single - step the current thread, keep other threads stopped, and that - breakpoints should be removed while we step. - - This variable is set either: - - in proceed, when we resume inferior on user's explicit request - - in keep_going, if handle_inferior_event decides we need to - step over breakpoint. - - The variable is cleared in normal_stop. The proceed calls - wait_for_inferior, which calls handle_inferior_event in a loop, - and until wait_for_inferior exits, this variable is changed only - by keep_going. */ + /* True if the the thread is presently stepping over a breakpoint or + a watchpoint, either with an inline step over or a displaced (out + of line) step, and we're now expecting it to report a trap for + the finished single step. */ int trap_expected = 0; /* Nonzero if the thread is being proceeded for a "finish" command |