diff options
author | Krishnan Parthasarathi <kparthas@redhat.com> | 2014-09-05 14:55:01 +0530 |
---|---|---|
committer | Vijay Bellur <vbellur@redhat.com> | 2014-09-26 03:20:07 -0700 |
commit | 04edacc5a0cc0a4c8c6bf5188a5ca4afd2fa4965 (patch) | |
tree | a427e651704510cb1af73ed83e28ce6ac22defbd /libglusterfs | |
parent | 61a7256f977dea586ad62741592f867906a63097 (diff) |
synctask: add backtrace per waiting task
The backtrace is 'saved' in a per-task buffer.
This would come handy while debugging code using
synctasks.
Change-Id: I732b275f6d15b31f31361f5ecf2ba47cacde9b54
BUG: 1145093
Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-on: http://review.gluster.org/8795
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'libglusterfs')
-rw-r--r-- | libglusterfs/src/syncop.c | 4 | ||||
-rw-r--r-- | libglusterfs/src/syncop.h | 1 |
2 files changed, 4 insertions, 1 deletions
diff --git a/libglusterfs/src/syncop.c b/libglusterfs/src/syncop.c index cc25cd58815..3e176cffc17 100644 --- a/libglusterfs/src/syncop.c +++ b/libglusterfs/src/syncop.c @@ -291,8 +291,10 @@ synctask_yield (struct synctask *task) task->proc->sched.uc_flags &= ~_UC_TLSBASE; #endif - if (task->state != SYNCTASK_DONE) + if (task->state != SYNCTASK_DONE) { task->state = SYNCTASK_SUSPEND; + (void) gf_backtrace_save (task->btbuf); + } if (swapcontext (&task->ctx, &task->proc->sched) < 0) { gf_log ("syncop", GF_LOG_ERROR, "swapcontext failed (%s)", strerror (errno)); diff --git a/libglusterfs/src/syncop.h b/libglusterfs/src/syncop.h index 41b2ef44942..9e0120a80cc 100644 --- a/libglusterfs/src/syncop.h +++ b/libglusterfs/src/syncop.h @@ -79,6 +79,7 @@ struct synctask { int done; struct list_head waitq; /* can wait only "once" at a time */ + char btbuf[GF_BACKTRACE_LEN]; }; |