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* breakpoint.c (moribund_locations): New.

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(bpstat_stop_status): Process moribund locations.
        (update_global_location_list): Add removed
        locations to moribund_locations.
        (breakpoint_retire_moribund): New.
        * breakpoint.h (struct bp_location): New field
        events_till_retirement.
        (breakpoint_retire_moribund): Declare.
        * thread.c (thread_count): New.
        * infrun.c (handle_inferior_event): Call
        breakpoint_retire_moribund.
        * gdbthread.h (thread_count): Declare.
This commit is contained in:
Vladimir Prus
2008-06-28 09:42:15 +00:00
parent 2a9bd7a88c
commit 20874c92f8
6 changed files with 131 additions and 19 deletions
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16
gdb/breakpoint.h
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@ -298,6 +298,17 @@ struct bp_location
/* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
struct bp_target_info overlay_target_info;
/* In a non-stop mode, it's possible that we delete a breakpoint,
but as we do that, some still running thread hits that breakpoint.
For that reason, we need to keep locations belonging to deleted
breakpoints for a bit, so that don't report unexpected SIGTRAP.
We can't keep such locations forever, so we use a heuristic --
after we process certain number of inferior events since
breakpoint was deleted, we retire all locations of that breakpoint.
This variable keeps a number of events still to go, when
it becomes 0 this location is retired. */
int events_till_retirement;
};
/* This structure is a collection of function pointers that, if available,
@ -865,4 +876,9 @@ void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr,
extern int breakpoints_always_inserted_mode (void);
/* Called each time new event from target is processed.
Retires previously deleted breakpoint locations that
in our opinion won't ever trigger. */
extern void breakpoint_retire_moribund (void);
#endif /* !defined (BREAKPOINT_H) */