crashpad/util/thread/thread_test.cc
Mark Mentovai 6278690abe Update copyright boilerplate, 2022 edition (Crashpad)
sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$')

Bug: chromium:1098010
Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-09-06 23:54:07 +00:00

104 lines
2.8 KiB
C++

// Copyright 2015 The Crashpad Authors
//
// 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 "util/thread/thread.h"
#include "gtest/gtest.h"
#include "util/synchronization/semaphore.h"
namespace crashpad {
namespace test {
namespace {
class NoopThread : public Thread {
public:
NoopThread() {}
NoopThread(const NoopThread&) = delete;
NoopThread& operator=(const NoopThread&) = delete;
~NoopThread() override {}
private:
void ThreadMain() override {}
};
class WaitThread : public Thread {
public:
explicit WaitThread(Semaphore* semaphore) : semaphore_(semaphore) {}
WaitThread(const WaitThread&) = delete;
WaitThread& operator=(const WaitThread&) = delete;
~WaitThread() override {}
private:
void ThreadMain() override { semaphore_->Wait(); }
Semaphore* semaphore_;
};
class JoinAndSignalThread : public Thread {
public:
JoinAndSignalThread(Thread* thread, Semaphore* semaphore)
: thread_(thread), semaphore_(semaphore) {}
JoinAndSignalThread(const JoinAndSignalThread&) = delete;
JoinAndSignalThread& operator=(const JoinAndSignalThread&) = delete;
~JoinAndSignalThread() override {}
private:
void ThreadMain() override {
thread_->Join();
semaphore_->Signal();
}
Thread* thread_;
Semaphore* semaphore_;
};
TEST(ThreadTest, NoStart) {
NoopThread thread;
}
TEST(ThreadTest, Start) {
NoopThread thread;
thread.Start();
thread.Join();
}
TEST(ThreadTest, JoinBlocks) {
Semaphore unblock_wait_thread_semaphore(0);
Semaphore join_completed_semaphore(0);
WaitThread wait_thread(&unblock_wait_thread_semaphore);
wait_thread.Start();
JoinAndSignalThread join_and_signal_thread(&wait_thread,
&join_completed_semaphore);
join_and_signal_thread.Start();
// join_completed_semaphore will be signaled when wait_thread.Join() returns
// (in JoinAndSignalThread::ThreadMain). Since wait_thread is blocking on
// unblock_wait_thread_semaphore, we don't expect the Join to return yet. We
// wait up to 100ms to give a broken implementation of Thread::Join a chance
// to return.
ASSERT_FALSE(join_completed_semaphore.TimedWait(.1));
unblock_wait_thread_semaphore.Signal();
join_completed_semaphore.Wait();
join_and_signal_thread.Join();
}
} // namespace
} // namespace test
} // namespace crashpad