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| author | Keith Bostic <keith@wiredtiger.com> | 2013-11-01 15:53:13 -0400 |
|---|---|---|
| committer | Keith Bostic <keith@wiredtiger.com> | 2013-11-01 15:53:13 -0400 |
| commit | 1b50234a9f43a8ef2607ee382f4f5c85a047f4b6 (patch) | |
| tree | a9d20a4f0b64486ca696e8c73a5e3c29d4e8b2c3 /src/include/mutex.h | |
| parent | 98338b858db03dc741b10353d0285d36e80e95c9 (diff) | |
| download | mongo-1b50234a9f43a8ef2607ee382f4f5c85a047f4b6.tar.gz | |
Do a full-barrier when spinlock logging is configured, it cuts down on
the number of races.
Add statistics to track the number of spinlock acquisitions.
Diffstat (limited to 'src/include/mutex.h')
| -rw-r--r-- | src/include/mutex.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/include/mutex.h b/src/include/mutex.h index 8f0db03de1e..dc556c3deba 100644 --- a/src/include/mutex.h +++ b/src/include/mutex.h @@ -54,8 +54,10 @@ typedef volatile int typedef struct { pthread_mutex_t lock; - const char *name; /* Mutex name, for statistics */ - int8_t id; /* Current holder, for statistics */ + uint64_t counter; /* Statistics: counter */ + + const char *name; /* Statistics: mutex name */ + int8_t id; /* Statistics: current holder ID */ int8_t initialized; /* Lock initialized, for cleanup */ } WT_SPINLOCK WT_GCC_ATTRIBUTE((aligned(WT_CACHE_LINE_ALIGNMENT))); |