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/*
* Copyright 2004 The WebRTC 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 <memory>
#include "rtc_base/constructor_magic.h"
#include "rtc_base/gunit.h"
#include "rtc_base/signal_thread.h"
#include "rtc_base/socket_server.h"
#include "rtc_base/thread.h"
#include "test/gtest.h"
namespace rtc {
namespace {
// 10 seconds.
static const int kTimeout = 10000;
class SignalThreadTest : public testing::Test, public sigslot::has_slots<> {
public:
class SlowSignalThread : public SignalThread {
public:
SlowSignalThread(SignalThreadTest* harness) : harness_(harness) {}
~SlowSignalThread() override {
EXPECT_EQ(harness_->main_thread_, Thread::Current());
++harness_->thread_deleted_;
}
const SignalThreadTest* harness() { return harness_; }
protected:
void OnWorkStart() override {
ASSERT_TRUE(harness_ != nullptr);
++harness_->thread_started_;
EXPECT_EQ(harness_->main_thread_, Thread::Current());
EXPECT_FALSE(worker()->RunningForTest()); // not started yet
}
void OnWorkStop() override {
++harness_->thread_stopped_;
EXPECT_EQ(harness_->main_thread_, Thread::Current());
EXPECT_TRUE(worker()->RunningForTest()); // not stopped yet
}
void OnWorkDone() override {
++harness_->thread_done_;
EXPECT_EQ(harness_->main_thread_, Thread::Current());
EXPECT_TRUE(worker()->RunningForTest()); // not stopped yet
}
void DoWork() override {
EXPECT_NE(harness_->main_thread_, Thread::Current());
EXPECT_EQ(worker(), Thread::Current());
Thread::Current()->socketserver()->Wait(250, false);
}
private:
SignalThreadTest* harness_;
RTC_DISALLOW_COPY_AND_ASSIGN(SlowSignalThread);
};
void OnWorkComplete(rtc::SignalThread* thread) {
SlowSignalThread* t = static_cast<SlowSignalThread*>(thread);
EXPECT_EQ(t->harness(), this);
EXPECT_EQ(main_thread_, Thread::Current());
++thread_completed_;
if (!called_release_) {
thread->Release();
}
}
void SetUp() override {
main_thread_ = Thread::Current();
thread_ = new SlowSignalThread(this);
thread_->SignalWorkDone.connect(this, &SignalThreadTest::OnWorkComplete);
called_release_ = false;
thread_started_ = 0;
thread_done_ = 0;
thread_completed_ = 0;
thread_stopped_ = 0;
thread_deleted_ = 0;
}
void ExpectState(int started,
int done,
int completed,
int stopped,
int deleted) {
EXPECT_EQ(started, thread_started_);
EXPECT_EQ(done, thread_done_);
EXPECT_EQ(completed, thread_completed_);
EXPECT_EQ(stopped, thread_stopped_);
EXPECT_EQ(deleted, thread_deleted_);
}
void ExpectStateWait(int started,
int done,
int completed,
int stopped,
int deleted,
int timeout) {
EXPECT_EQ_WAIT(started, thread_started_, timeout);
EXPECT_EQ_WAIT(done, thread_done_, timeout);
EXPECT_EQ_WAIT(completed, thread_completed_, timeout);
EXPECT_EQ_WAIT(stopped, thread_stopped_, timeout);
EXPECT_EQ_WAIT(deleted, thread_deleted_, timeout);
}
Thread* main_thread_;
SlowSignalThread* thread_;
bool called_release_;
int thread_started_;
int thread_done_;
int thread_completed_;
int thread_stopped_;
int thread_deleted_;
};
class OwnerThread : public Thread, public sigslot::has_slots<> {
public:
explicit OwnerThread(SignalThreadTest* harness)
: harness_(harness), has_run_(false) {}
~OwnerThread() override { Stop(); }
void Run() override {
SignalThreadTest::SlowSignalThread* signal_thread =
new SignalThreadTest::SlowSignalThread(harness_);
signal_thread->SignalWorkDone.connect(this, &OwnerThread::OnWorkDone);
signal_thread->Start();
Thread::Current()->socketserver()->Wait(100, false);
signal_thread->Release();
// Delete |signal_thread|.
signal_thread->Destroy(true);
has_run_ = true;
}
bool has_run() { return has_run_; }
void OnWorkDone(SignalThread* signal_thread) {
FAIL() << " This shouldn't get called.";
}
private:
SignalThreadTest* harness_;
bool has_run_;
RTC_DISALLOW_COPY_AND_ASSIGN(OwnerThread);
};
// Test for when the main thread goes away while the
// signal thread is still working. This may happen
// when shutting down the process.
TEST_F(SignalThreadTest, OwnerThreadGoesAway) {
// We don't use |thread_| for this test, so destroy it.
thread_->Destroy(true);
{
std::unique_ptr<OwnerThread> owner(new OwnerThread(this));
main_thread_ = owner.get();
owner->Start();
while (!owner->has_run()) {
Thread::Current()->socketserver()->Wait(10, false);
}
}
// At this point the main thread has gone away.
// Give the SignalThread a little time to do its callback,
// which will crash if the signal thread doesn't handle
// this situation well.
Thread::Current()->socketserver()->Wait(500, false);
}
TEST_F(SignalThreadTest, ThreadFinishes) {
thread_->Start();
ExpectState(1, 0, 0, 0, 0);
ExpectStateWait(1, 1, 1, 0, 1, kTimeout);
}
TEST_F(SignalThreadTest, ReleasedThreadFinishes) {
thread_->Start();
ExpectState(1, 0, 0, 0, 0);
thread_->Release();
called_release_ = true;
ExpectState(1, 0, 0, 0, 0);
ExpectStateWait(1, 1, 1, 0, 1, kTimeout);
}
TEST_F(SignalThreadTest, DestroyedThreadCleansUp) {
thread_->Start();
ExpectState(1, 0, 0, 0, 0);
thread_->Destroy(true);
ExpectState(1, 0, 0, 1, 1);
Thread::Current()->ProcessMessages(0);
ExpectState(1, 0, 0, 1, 1);
}
TEST_F(SignalThreadTest, DeferredDestroyedThreadCleansUp) {
thread_->Start();
ExpectState(1, 0, 0, 0, 0);
thread_->Destroy(false);
ExpectState(1, 0, 0, 1, 0);
ExpectStateWait(1, 1, 0, 1, 1, kTimeout);
}
} // namespace
} // namespace rtc