*/
#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
#if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG) && !defined(OPENSSL_SYS_WINDOWS)
}
# else
pthread_mutexattr_t attr;
-
CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_mutex_t));
if (lock == NULL)
return NULL;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
-
+
if (pthread_mutex_init(lock, &attr) != 0) {
pthread_mutexattr_destroy(&attr);
OPENSSL_free(lock);
return NULL;
}
-
+
pthread_mutexattr_destroy(&attr);
# endif
return 1;
}
+int CRYPTO_atomic_read(int *val, int *ret, CRYPTO_RWLOCK *lock)
+{
+# if defined(__GNUC__) && defined(__ATOMIC_ACQUIRE)
+ if (__atomic_is_lock_free(sizeof(*val), val)) {
+ __atomic_load(val, ret, __ATOMIC_ACQUIRE);
+ return 1;
+ }
+# endif
+ if (!CRYPTO_THREAD_read_lock(lock))
+ return 0;
+
+ *ret = *val;
+
+ if (!CRYPTO_THREAD_unlock(lock))
+ return 0;
+
+ return 1;
+}
+
+int CRYPTO_atomic_write(int *val, int n, CRYPTO_RWLOCK *lock)
+{
+# if defined(__GNUC__) && defined(__ATOMIC_RELEASE)
+ if (__atomic_is_lock_free(sizeof(*val), val)) {
+ __atomic_store(val, &n, __ATOMIC_RELEASE);
+ return 1;
+ }
+# endif
+ if (!CRYPTO_THREAD_write_lock(lock))
+ return 0;
+
+ *val = n;
+
+ if (!CRYPTO_THREAD_unlock(lock))
+ return 0;
+
+ return 1;
+}
+
+# ifdef OPENSSL_SYS_UNIX
+static pthread_once_t fork_once_control = PTHREAD_ONCE_INIT;
+
+static void fork_once_func(void)
+{
+ pthread_atfork(OPENSSL_fork_prepare,
+ OPENSSL_fork_parent, OPENSSL_fork_child);
+}
+# endif
+
+int openssl_init_fork_handlers(void)
+{
+# ifdef OPENSSL_SYS_UNIX
+ if (pthread_once(&fork_once_control, fork_once_func) == 0)
+ return 1;
+# endif
+ return 0;
+}
#endif