43 lines
1020 B
C
43 lines
1020 B
C
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// Copyright (c) 2015, Google Inc.
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// SPDX-License-Identifier: ISC
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#include "internal.h"
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#include <stdlib.h>
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#include <openssl/type_check.h>
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#if !defined(OPENSSL_C11_ATOMIC) && !defined(OPENSSL_WINDOWS_ATOMIC)
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OPENSSL_STATIC_ASSERT((CRYPTO_refcount_t)-1 == CRYPTO_REFCOUNT_MAX,
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CRYPTO_REFCOUNT_MAX_is_incorrect)
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static struct CRYPTO_STATIC_MUTEX g_refcount_lock = CRYPTO_STATIC_MUTEX_INIT;
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void CRYPTO_refcount_inc(CRYPTO_refcount_t *count) {
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CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock);
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if (*count < CRYPTO_REFCOUNT_MAX) {
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(*count)++;
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}
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CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock);
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}
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int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *count) {
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int ret;
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CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock);
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if (*count == 0) {
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abort();
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}
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if (*count < CRYPTO_REFCOUNT_MAX) {
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(*count)--;
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}
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ret = (*count == 0);
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CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock);
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return ret;
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}
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#endif // !OPENSSL_C11_ATOMIC && !OPENSSL_WINDOWS_ATOMICS
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