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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.
// Thread joining is mostly tested in the other tests.
#include "starboard/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace starboard {
namespace nplb {
namespace {
TEST(SbThreadJoinTest, RainyDayInvalid) {
void* result = NULL;
EXPECT_FALSE(SbThreadJoin(kSbThreadInvalid, NULL));
EXPECT_FALSE(SbThreadJoin(kSbThreadInvalid, &result));
EXPECT_EQ(NULL, result);
}
// Tests the expectation that SbThreadJoin() will block until
// the thread function has been run.
TEST(SbThreadLocalValueTest, ThreadJoinWaitsForFunctionRun) {
// Thread functionality needs to bind to functions. In C++11 we'd use a
// lambda function to tie everything together locally, but this
// function-scoped struct with static function emulates this functionality
// pretty well.
struct LocalStatic {
static void* ThreadEntryPoint(void* input) {
int* value = static_cast<int*>(input);
static const SbTime kSleepTime = 10*kSbTimeMillisecond; // 10 ms.
// Wait to write the value to increase likelyhood of catching
// a race condition.
SbThreadSleep(kSleepTime);
(*value)++;
return NULL;
}
};
// Try to increase likelyhood of a race condition by running multiple times.
for (int i = 0; i < 10; ++i) {
int num_times_thread_entry_point_run = 0;
SbThread thread = SbThreadCreate(
0, // Signals automatic thread stack size.
kSbThreadNoPriority, // Signals default priority.
kSbThreadNoAffinity, // Signals default affinity.
true, // joinable thread.
"TestThread",
LocalStatic::ThreadEntryPoint,
&num_times_thread_entry_point_run);
ASSERT_NE(kSbThreadInvalid, thread) << "Thread creation not successful";
ASSERT_TRUE(SbThreadJoin(thread, NULL));
ASSERT_EQ(1, num_times_thread_entry_point_run)
<< "Expected SbThreadJoin() to be blocked until ThreadFunction runs.";
}
}
} // namespace
} // namespace nplb
} // namespace starboard