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Add some more utility macros to evthread-internal.h

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svn:r1132
This commit is contained in:
Nick Mathewson 2009-04-05 02:43:55 +00:00
parent f1b1bad415
commit 70ee390fc9
1 changed files with 41 additions and 1 deletions
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42
evthread-internal.h
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@ -58,7 +58,47 @@ extern void (*_evthread_lock_free_fn)(void *);
do { \
if (lockvar && _evthread_lock_free_fn) \
_evthread_lock_free_fn(lockvar); \
} while (0);
} while (0)
#define EVLOCK_LOCK(lock,mode) \
do { \
if (lock) \
_evthread_locking_fn(EVTHREAD_LOCK|mode, lock); \
} while (0)
#define EVLOCK_UNLOCK(lock,mode) \
do { \
if (lock) \
_evthread_locking_fn(EVTHREAD_UNLOCK|mode, lock); \
} while (0)
#define _EVLOCK_SORTLOCKS(lockvar1, lockvar2) \
do { \
if (lockvar1 && lockvar2 && lockvar1 > lockvar2) { \
void *tmp = lockvar1; \
lockvar1 = lockvar2; \
lockvar2 = tmp; \
} \
} while (0)
#define EVLOCK_LOCK2(lock1,lock2,mode1,mode2) \
do { \
void *_lock1_tmplock = (lock1); \
void *_lock2_tmplock = (lock2); \
_EVLOCK_SORTLOCKS(_lock1_tmplock,_lock2_tmplock); \
EVLOCK_LOCK(_lock1_tmplock,mode1); \
if (_lock2_tmplock != _lock1_tmplock) \
EVLOCK_LOCK(_lock2_tmplock,mode2); \
} while (0)
#define EVLOCK_UNLOCK2(lock1,lock2,mode1,mode2) \
do { \
void *_lock1_tmplock = (lock1); \
void *_lock2_tmplock = (lock2); \
_EVLOCK_SORTLOCKS(_lock1_tmplock,_lock2_tmplock); \
if (_lock2_tmplock != _lock1_tmplock) \
EVLOCK_UNLOCK(_lock2_tmplock,mode2); \
EVLOCK_UNLOCK(_lock1_tmplock,mode1); \
} while (0)
#define EVBASE_ACQUIRE_LOCK(base, mode, lock) do { \
if (EVBASE_USING_LOCKS(base)) \