53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
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// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "app/libcrypto_threading.h"
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#include <pthread.h>
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#include <vector>
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#include "openssl/crypto.h"
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namespace {
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std::vector<pthread_mutex_t> global_locks;
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void LockFunction(int mode, int n, const char* file, int line) {
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if (mode & CRYPTO_LOCK)
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pthread_mutex_lock(&global_locks[n]);
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else
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pthread_mutex_unlock(&global_locks[n]);
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}
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unsigned long ThreadIdFunction() {
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return static_cast<unsigned long>(pthread_self());
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}
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} // anonymous namespace
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namespace media {
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bool InitLibcryptoThreading() {
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int num_global_locks = CRYPTO_num_locks();
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global_locks.resize(num_global_locks);
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for (int i = 0; i < num_global_locks; ++i)
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pthread_mutex_init(&global_locks[i], NULL);
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CRYPTO_set_id_callback(ThreadIdFunction);
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CRYPTO_set_locking_callback(LockFunction);
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return true;
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}
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bool TerminateLibcryptoThreading() {
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CRYPTO_set_id_callback(NULL);
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CRYPTO_set_locking_callback(NULL);
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for (size_t i = 0; i < global_locks.size(); ++i)
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pthread_mutex_destroy(&global_locks[i]);
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global_locks.clear();
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return true;
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}
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} // namespace media
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