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| author | Sergio Durigan Junior <sergiodj@redhat.com> | 2014-10-14 14:45:13 -0400 |
|---|---|---|
| committer | Sergio Durigan Junior <sergiodj@redhat.com> | 2014-10-14 14:46:18 -0400 |
| commit | 0ea5cda8612bd2233f7a2f9d1eba0b62c2e6c015 (patch) | |
| tree | 68a032cab73c270e981d6efe1d1ec726fee51b11 /gdb/probe.h | |
| parent | f7088df3b1c0370101edada54e26d24efb53125c (diff) | |
| download | gdb-0ea5cda8612bd2233f7a2f9d1eba0b62c2e6c015.zip gdb-0ea5cda8612bd2233f7a2f9d1eba0b62c2e6c015.tar.gz gdb-0ea5cda8612bd2233f7a2f9d1eba0b62c2e6c015.tar.bz2 | |
Only call {set,clear}_semaphore probe function if they are not NULL
This patch is a response to what I commented on:
<https://sourceware.org/ml/gdb-patches/2014-10/msg00046.html>
When reviewing Jose's USDT probe support patches. Basically, in his
patch he had to create dummy functions for the set_semaphore and the
clear_semaphore methods of probe_ops (gdb/probe.h), because those
functions were called inconditionally from inside gdb/breakpoint.c and
gdb/tracepoint.c. However, the semaphore concept may not apply to all
types of probes, and this is the case here: USDT probes do not have
semaphores (although SDT probes do).
Anyway, this is a simple (almost obvious) patch to guard the call to
{set,clear}_semaphore. It does not introduce any regression on a
Fedora 20 x86_64.
I will apply it in a few days in case there is no comment.
gdb/ChangeLog:
2014-10-14 Sergio Durigan Junior <sergiodj@redhat.com>
* breakpoint.c (bkpt_probe_insert_location): Call set_semaphore
only if it is not NULL.
(bkpt_probe_remove_location): Likewise, for clear_semaphore.
* probe.h (struct probe_ops) <set_semaphore>: Update comment.
(struct probe_ops) <clear_semaphore>: Likewise.
* tracepoint.c (start_tracing): Call set_semaphore only if it is
not NULL.
(stop_tracing): Likewise, for clear_semaphore.
Diffstat (limited to 'gdb/probe.h')
| -rw-r--r-- | gdb/probe.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gdb/probe.h b/gdb/probe.h index b4ff0a6..a128151 100644 --- a/gdb/probe.h +++ b/gdb/probe.h @@ -96,14 +96,14 @@ struct probe_ops /* Set the semaphore associated with the PROBE. This function only makes sense if the probe has a concept of semaphore associated to a - probe. */ + probe, otherwise it can be set to NULL. */ void (*set_semaphore) (struct probe *probe, struct objfile *objfile, struct gdbarch *gdbarch); /* Clear the semaphore associated with the PROBE. This function only makes sense if the probe has a concept of semaphore associated to - a probe. */ + a probe, otherwise it can be set to NULL. */ void (*clear_semaphore) (struct probe *probe, struct objfile *objfile, struct gdbarch *gdbarch); |