| /* Copyright (c) 2015, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #include "internal.h" |
| |
| #include <stdlib.h> |
| |
| #include <openssl/type_check.h> |
| |
| |
| #if !defined(OPENSSL_C11_ATOMIC) && !defined(STARBOARD) |
| |
| OPENSSL_COMPILE_ASSERT((CRYPTO_refcount_t)-1 == CRYPTO_REFCOUNT_MAX, |
| CRYPTO_REFCOUNT_MAX_is_incorrect); |
| |
| static struct CRYPTO_STATIC_MUTEX g_refcount_lock = CRYPTO_STATIC_MUTEX_INIT; |
| |
| void CRYPTO_refcount_inc(CRYPTO_refcount_t *count) { |
| CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock); |
| if (*count < CRYPTO_REFCOUNT_MAX) { |
| (*count)++; |
| } |
| CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock); |
| } |
| |
| int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *count) { |
| int ret; |
| |
| CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock); |
| if (*count == 0) { |
| OPENSSL_port_abort(); |
| } |
| if (*count < CRYPTO_REFCOUNT_MAX) { |
| (*count)--; |
| } |
| ret = (*count == 0); |
| CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock); |
| |
| return ret; |
| } |
| |
| #endif // !OPENSSL_C11_ATOMIC && !STARBOARD |