diff options
Diffstat (limited to 'src/pkg/runtime/mprof.goc')
| -rw-r--r-- | src/pkg/runtime/mprof.goc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/pkg/runtime/mprof.goc b/src/pkg/runtime/mprof.goc index 51d0224250..4cd92d04a1 100644 --- a/src/pkg/runtime/mprof.goc +++ b/src/pkg/runtime/mprof.goc @@ -209,8 +209,13 @@ runtime·MProf_Malloc(void *p, uintptr size, uintptr typ) b = stkbucket(MProf, stk, nstk, true); b->recent_allocs++; b->recent_alloc_bytes += size; - runtime·setprofilebucket(p, b); runtime·unlock(&proflock); + + // Setprofilebucket locks a bunch of other mutexes, so we call it outside of proflock. + // This reduces potential contention and chances of deadlocks. + // Since the object must be alive during call to MProf_Malloc, + // it's fine to do this non-atomically. + runtime·setprofilebucket(p, b); } // Called when freeing a profiled block. |