diff options
| author | Krishnan Parthasarathi <kparthas@redhat.com> | 2014-09-05 14:55:01 +0530 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2014-09-22 04:17:11 -0700 |
| commit | 58f23090fc0af2d93c02da68b06e02d1263df499 (patch) | |
| tree | 36fac5bd4f6db90b5026a6e9a622045430916bbe /libglusterfs | |
| parent | 1b53756e50cb9ad5422292d7f4e1e6fe23357222 (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: 1138503
Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-on: http://review.gluster.org/8622
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@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 80b899badb2..31438b17883 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]; }; |