5 #ifndef STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_
6 #define STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_
41 #endif // STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_
#define EXCLUSIVE_LOCK_FUNCTION(...)
#define UNLOCK_FUNCTION(...)
MutexLock(port::Mutex *mu) EXCLUSIVE_LOCK_FUNCTION(mu)
~MutexLock() UNLOCK_FUNCTION()