diff options
| author | Mark Benvenuto <mark.benvenuto@mongodb.com> | 2014-11-05 18:18:45 -0500 |
|---|---|---|
| committer | Mark Benvenuto <mark.benvenuto@mongodb.com> | 2014-11-06 10:51:20 -0500 |
| commit | 1f741358bc48543349619d9e5d86d6c46b57abd7 (patch) | |
| tree | 0ce4eeff568f7e0685c92b6c7e2007e0a448f351 /src/third_party/wiredtiger/src/include/mutex.h | |
| parent | 4da5ebab3d27b20508fb73179cd2f3799b6ee607 (diff) | |
| download | mongo-1f741358bc48543349619d9e5d86d6c46b57abd7.tar.gz | |
Import wiredtiger-wiredtiger-2.4.1-0-gee7388e.tar.gz from wiredtiger branch develop
Diffstat (limited to 'src/third_party/wiredtiger/src/include/mutex.h')
| -rw-r--r-- | src/third_party/wiredtiger/src/include/mutex.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/src/include/mutex.h b/src/third_party/wiredtiger/src/include/mutex.h index b71496dd595..d1373b3d1ad 100644 --- a/src/third_party/wiredtiger/src/include/mutex.h +++ b/src/third_party/wiredtiger/src/include/mutex.h @@ -22,6 +22,26 @@ struct __wt_condvar { }; /* + * !!! + * Don't touch this structure without understanding the read/write + * locking functions. + */ +typedef union { /* Read/write lock */ +#ifdef WORDS_BIGENDIAN + WiredTiger read/write locks require modification for big-endian systems. +#else + uint64_t u; + uint32_t us; + struct { + uint16_t writers; + uint16_t readers; + uint16_t users; + uint16_t pad; + } s; +#endif +} wt_rwlock_t; + +/* * Read/write locks: * * WiredTiger uses read/write locks for shared/exclusive access to resources. |