openssl/crypto/threads_win.c

35     SRWLOCK lock;
42     CRYPTO_RWLOCK *lock;
46     if ((lock = OPENSSL_zalloc(sizeof(CRYPTO_win_rwlock))) == NULL)
48     rwlock = lock;
49     InitializeSRWLock(&rwlock->lock);
52     if ((lock = OPENSSL_zalloc(sizeof(CRITICAL_SECTION))) == NULL) {
59     if (!InitializeCriticalSectionAndSpinCount(lock, 0x400)) {
60         OPENSSL_free(lock);
64     InitializeCriticalSection(lock);
68     return lock;
71 __owur int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
74     CRYPTO_win_rwlock *rwlock = lock;
76     AcquireSRWLockShared(&rwlock->lock);
78     EnterCriticalSection(lock);
83 __owur int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
86     CRYPTO_win_rwlock *rwlock = lock;
88     AcquireSRWLockExclusive(&rwlock->lock);
91     EnterCriticalSection(lock);
96 int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)
99     CRYPTO_win_rwlock *rwlock = lock;
103         ReleaseSRWLockExclusive(&rwlock->lock);
105         ReleaseSRWLockShared(&rwlock->lock);
108     LeaveCriticalSection(lock);
113 void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock)
115     if (lock == NULL)
119     DeleteCriticalSection(lock);
121     OPENSSL_free(lock);
136     LONG volatile *lock = (LONG *)once;
139     if (*lock == ONCE_DONE)
143         result = InterlockedCompareExchange(lock, ONCE_ININIT, ONCE_UNINITED);
146             *lock = ONCE_DONE;
151     return (*lock == ONCE_DONE);
213 int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
220                      CRYPTO_RWLOCK *lock)
223     if (lock == NULL || !CRYPTO_THREAD_write_lock(lock))
228     if (!CRYPTO_THREAD_unlock(lock))
238 int CRYPTO_atomic_load(uint64_t *val, uint64_t *ret, CRYPTO_RWLOCK *lock)
241     if (lock == NULL || !CRYPTO_THREAD_read_lock(lock))
244     if (!CRYPTO_THREAD_unlock(lock))