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// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "starboard/common/mutex.h"
#include "starboard/configuration.h"
#include "testing/gtest/include/gtest/gtest.h"
#if SB_API_VERSION >= 12
#include "starboard/nplb/thread_helpers.h"
#include "starboard/thread.h"
#endif // SB_API_VERSION >= 12
namespace starboard {
namespace nplb {
namespace {
#if SB_API_VERSION >= 12
struct TestContext {
explicit TestContext(SbMutex* mutex) : was_locked_(false), mutex_(mutex) {}
bool was_locked_;
SbMutex* mutex_;
};
void* EntryPoint(void* parameter) {
TestContext* context = static_cast<TestContext*>(parameter);
context->was_locked_ =
(SbMutexAcquireTry(context->mutex_) == kSbMutexAcquired);
return NULL;
}
#endif // SB_API_VERSION >= 12
TEST(SbMutexAcquireTryTest, SunnyDayUncontended) {
SbMutex mutex;
EXPECT_TRUE(SbMutexCreate(&mutex));
SbMutexResult result = SbMutexAcquireTry(&mutex);
EXPECT_EQ(result, kSbMutexAcquired);
EXPECT_TRUE(SbMutexIsSuccess(result));
EXPECT_TRUE(SbMutexRelease(&mutex));
EXPECT_TRUE(SbMutexDestroy(&mutex));
}
TEST(SbMutexAcquireTest, SunnyDayAutoInit) {
SbMutex mutex = SB_MUTEX_INITIALIZER;
SbMutexResult result = SbMutexAcquireTry(&mutex);
EXPECT_TRUE(SbMutexRelease(&mutex));
EXPECT_TRUE(SbMutexDestroy(&mutex));
}
TEST(SbMutexAcquireTryTest, RainyDayReentrant) {
SbMutex mutex;
EXPECT_TRUE(SbMutexCreate(&mutex));
SbMutexResult result = SbMutexAcquireTry(&mutex);
EXPECT_EQ(result, kSbMutexAcquired);
EXPECT_TRUE(SbMutexIsSuccess(result));
#if SB_API_VERSION >= 12
TestContext context(&mutex);
SbThread thread =
SbThreadCreate(0, kSbThreadNoPriority, kSbThreadNoAffinity, true,
nplb::kThreadName, &EntryPoint, &context);
EXPECT_TRUE(SbThreadIsValid(thread));
EXPECT_TRUE(SbThreadJoin(thread, NULL));
EXPECT_FALSE(context.was_locked_);
#else // SB_API_VERSION >= 12
result = SbMutexAcquireTry(&mutex);
EXPECT_EQ(result, kSbMutexBusy);
EXPECT_FALSE(SbMutexIsSuccess(result));
#endif // SB_API_VERSION >= 12
EXPECT_TRUE(SbMutexRelease(&mutex));
EXPECT_TRUE(SbMutexDestroy(&mutex));
}
} // namespace
} // namespace nplb
} // namespace starboard