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_atfork(OPENSSL_fork_prepare,
- OPENSSL_fork_parent, OPENSSL_fork_child) == 0)
+ if (pthread_once(&fork_once_control, fork_once_func) == 0)
return 1;
# endif
return 0;