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/*
* Copyright 2017 The LibYuv Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <gtest/gtest.h>
#include "libyuv/cpu_id.h"
#if defined(__clang__) && !defined(__wasm__)
#if __has_include(<pthread.h>)
#define LIBYUV_HAVE_PTHREAD 1
#endif
#elif defined(__linux__)
#define LIBYUV_HAVE_PTHREAD 1
#endif
#ifdef LIBYUV_HAVE_PTHREAD
#include <pthread.h>
#endif
namespace libyuv {
#ifdef LIBYUV_HAVE_PTHREAD
static void* ThreadMain(void* arg) {
int* flags = static_cast<int*>(arg);
*flags = TestCpuFlag(kCpuInitialized);
return nullptr;
}
#endif // LIBYUV_HAVE_PTHREAD
// Call TestCpuFlag() from two threads. ThreadSanitizer should not report any
// data race.
TEST(LibYUVCpuThreadTest, TestCpuFlagMultipleThreads) {
#ifdef LIBYUV_HAVE_PTHREAD
int cpu_flags1;
int cpu_flags2;
int ret;
pthread_t thread1;
pthread_t thread2;
MaskCpuFlags(0); // Reset to 0 to allow auto detect.
ret = pthread_create(&thread1, nullptr, ThreadMain, &cpu_flags1);
ASSERT_EQ(ret, 0);
ret = pthread_create(&thread2, nullptr, ThreadMain, &cpu_flags2);
ASSERT_EQ(ret, 0);
ret = pthread_join(thread1, nullptr);
EXPECT_EQ(ret, 0);
ret = pthread_join(thread2, nullptr);
EXPECT_EQ(ret, 0);
EXPECT_EQ(cpu_flags1, cpu_flags2);
#else
printf("pthread unavailable; Test skipped.");
#endif // LIBYUV_HAVE_PTHREAD
}
} // namespace libyuv
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