blob: c7c7d0acf20054c2d4d710d8ef1f808476e0124c [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "base/threading/platform_thread.h"
#include "base/threading/simple_thread.h"
#include "base/threading/thread_collision_warner.h"
#include "testing/gtest/include/gtest/gtest.h"
// '' : local class member function does not have a body
MSVC_PUSH_DISABLE_WARNING(4822)
#if defined(NDEBUG)
// Would cause a memory leak otherwise.
#undef DFAKE_MUTEX
#define DFAKE_MUTEX(obj) scoped_ptr<base::AsserterBase> obj
// In Release, we expect the AsserterBase::warn() to not happen.
#define EXPECT_NDEBUG_FALSE_DEBUG_TRUE EXPECT_FALSE
#else
// In Debug, we expect the AsserterBase::warn() to happen.
#define EXPECT_NDEBUG_FALSE_DEBUG_TRUE EXPECT_TRUE
#endif
namespace {
// This is the asserter used with ThreadCollisionWarner instead of the default
// DCheckAsserter. The method fail_state is used to know if a collision took
// place.
class AssertReporter : public base::AsserterBase {
public:
AssertReporter()
: failed_(false) {}
virtual void warn() override {
failed_ = true;
}
virtual ~AssertReporter() {}
bool fail_state() const { return failed_; }
void reset() { failed_ = false; }
private:
bool failed_;
};
} // namespace
TEST(ThreadCollisionTest, BookCriticalSection) {
AssertReporter* local_reporter = new AssertReporter();
base::ThreadCollisionWarner warner(local_reporter);
EXPECT_FALSE(local_reporter->fail_state());
{ // Pin section.
DFAKE_SCOPED_LOCK_THREAD_LOCKED(warner);
EXPECT_FALSE(local_reporter->fail_state());
{ // Pin section.
DFAKE_SCOPED_LOCK_THREAD_LOCKED(warner);
EXPECT_FALSE(local_reporter->fail_state());
}
}
}
TEST(ThreadCollisionTest, ScopedRecursiveBookCriticalSection) {
AssertReporter* local_reporter = new AssertReporter();
base::ThreadCollisionWarner warner(local_reporter);
EXPECT_FALSE(local_reporter->fail_state());
{ // Pin section.
DFAKE_SCOPED_RECURSIVE_LOCK(warner);
EXPECT_FALSE(local_reporter->fail_state());
{ // Pin section again (allowed by DFAKE_SCOPED_RECURSIVE_LOCK)
DFAKE_SCOPED_RECURSIVE_LOCK(warner);
EXPECT_FALSE(local_reporter->fail_state());
} // Unpin section.
} // Unpin section.
// Check that section is not pinned
{ // Pin section.
DFAKE_SCOPED_LOCK(warner);
EXPECT_FALSE(local_reporter->fail_state());
} // Unpin section.
}
TEST(ThreadCollisionTest, ScopedBookCriticalSection) {
AssertReporter* local_reporter = new AssertReporter();
base::ThreadCollisionWarner warner(local_reporter);
EXPECT_FALSE(local_reporter->fail_state());
{ // Pin section.
DFAKE_SCOPED_LOCK(warner);
EXPECT_FALSE(local_reporter->fail_state());
} // Unpin section.
{ // Pin section.
DFAKE_SCOPED_LOCK(warner);
EXPECT_FALSE(local_reporter->fail_state());
{
// Pin section again (not allowed by DFAKE_SCOPED_LOCK)
DFAKE_SCOPED_LOCK(warner);
EXPECT_NDEBUG_FALSE_DEBUG_TRUE(local_reporter->fail_state());
// Reset the status of warner for further tests.
local_reporter->reset();
} // Unpin section.
} // Unpin section.
{
// Pin section.
DFAKE_SCOPED_LOCK(warner);
EXPECT_FALSE(local_reporter->fail_state());
} // Unpin section.
}
TEST(ThreadCollisionTest, MTBookCriticalSectionTest) {
class NonThreadSafeQueue {
public:
explicit NonThreadSafeQueue(base::AsserterBase* asserter)
: push_pop_(asserter) {
}
void push(int value) {
DFAKE_SCOPED_LOCK_THREAD_LOCKED(push_pop_);
}
int pop() {
DFAKE_SCOPED_LOCK_THREAD_LOCKED(push_pop_);
return 0;
}
private:
DFAKE_MUTEX(push_pop_);
DISALLOW_COPY_AND_ASSIGN(NonThreadSafeQueue);
};
class QueueUser : public base::DelegateSimpleThread::Delegate {
public:
explicit QueueUser(NonThreadSafeQueue& queue)
: queue_(queue) {}
virtual void Run() override {
queue_.push(0);
queue_.pop();
}
private:
NonThreadSafeQueue& queue_;
};
AssertReporter* local_reporter = new AssertReporter();
NonThreadSafeQueue queue(local_reporter);
QueueUser queue_user_a(queue);
QueueUser queue_user_b(queue);
base::DelegateSimpleThread thread_a(&queue_user_a, "queue_user_thread_a");
base::DelegateSimpleThread thread_b(&queue_user_b, "queue_user_thread_b");
thread_a.Start();
thread_b.Start();
thread_a.Join();
thread_b.Join();
EXPECT_NDEBUG_FALSE_DEBUG_TRUE(local_reporter->fail_state());
}
TEST(ThreadCollisionTest, MTScopedBookCriticalSectionTest) {
// Queue with a 5 seconds push execution time, hopefuly the two used threads
// in the test will enter the push at same time.
class NonThreadSafeQueue {
public:
explicit NonThreadSafeQueue(base::AsserterBase* asserter)
: push_pop_(asserter) {
}
void push(int value) {
DFAKE_SCOPED_LOCK(push_pop_);
base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(5));
}
int pop() {
DFAKE_SCOPED_LOCK(push_pop_);
return 0;
}
private:
DFAKE_MUTEX(push_pop_);
DISALLOW_COPY_AND_ASSIGN(NonThreadSafeQueue);
};
class QueueUser : public base::DelegateSimpleThread::Delegate {
public:
explicit QueueUser(NonThreadSafeQueue& queue)
: queue_(queue) {}
virtual void Run() override {
queue_.push(0);
queue_.pop();
}
private:
NonThreadSafeQueue& queue_;
};
AssertReporter* local_reporter = new AssertReporter();
NonThreadSafeQueue queue(local_reporter);
QueueUser queue_user_a(queue);
QueueUser queue_user_b(queue);
base::DelegateSimpleThread thread_a(&queue_user_a, "queue_user_thread_a");
base::DelegateSimpleThread thread_b(&queue_user_b, "queue_user_thread_b");
thread_a.Start();
thread_b.Start();
thread_a.Join();
thread_b.Join();
EXPECT_NDEBUG_FALSE_DEBUG_TRUE(local_reporter->fail_state());
}
TEST(ThreadCollisionTest, MTSynchedScopedBookCriticalSectionTest) {
// Queue with a 2 seconds push execution time, hopefuly the two used threads
// in the test will enter the push at same time.
class NonThreadSafeQueue {
public:
explicit NonThreadSafeQueue(base::AsserterBase* asserter)
: push_pop_(asserter) {
}
void push(int value) {
DFAKE_SCOPED_LOCK(push_pop_);
base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(2));
}
int pop() {
DFAKE_SCOPED_LOCK(push_pop_);
return 0;
}
private:
DFAKE_MUTEX(push_pop_);
DISALLOW_COPY_AND_ASSIGN(NonThreadSafeQueue);
};
// This time the QueueUser class protects the non thread safe queue with
// a lock.
class QueueUser : public base::DelegateSimpleThread::Delegate {
public:
QueueUser(NonThreadSafeQueue& queue, base::Lock& lock)
: queue_(queue),
lock_(lock) {}
virtual void Run() override {
{
base::AutoLock auto_lock(lock_);
queue_.push(0);
}
{
base::AutoLock auto_lock(lock_);
queue_.pop();
}
}
private:
NonThreadSafeQueue& queue_;
base::Lock& lock_;
};
AssertReporter* local_reporter = new AssertReporter();
NonThreadSafeQueue queue(local_reporter);
base::Lock lock;
QueueUser queue_user_a(queue, lock);
QueueUser queue_user_b(queue, lock);
base::DelegateSimpleThread thread_a(&queue_user_a, "queue_user_thread_a");
base::DelegateSimpleThread thread_b(&queue_user_b, "queue_user_thread_b");
thread_a.Start();
thread_b.Start();
thread_a.Join();
thread_b.Join();
EXPECT_FALSE(local_reporter->fail_state());
}
TEST(ThreadCollisionTest, MTSynchedScopedRecursiveBookCriticalSectionTest) {
// Queue with a 2 seconds push execution time, hopefuly the two used threads
// in the test will enter the push at same time.
class NonThreadSafeQueue {
public:
explicit NonThreadSafeQueue(base::AsserterBase* asserter)
: push_pop_(asserter) {
}
void push(int) {
DFAKE_SCOPED_RECURSIVE_LOCK(push_pop_);
bar();
base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(2));
}
int pop() {
DFAKE_SCOPED_RECURSIVE_LOCK(push_pop_);
return 0;
}
void bar() {
DFAKE_SCOPED_RECURSIVE_LOCK(push_pop_);
}
private:
DFAKE_MUTEX(push_pop_);
DISALLOW_COPY_AND_ASSIGN(NonThreadSafeQueue);
};
// This time the QueueUser class protects the non thread safe queue with
// a lock.
class QueueUser : public base::DelegateSimpleThread::Delegate {
public:
QueueUser(NonThreadSafeQueue& queue, base::Lock& lock)
: queue_(queue),
lock_(lock) {}
virtual void Run() override {
{
base::AutoLock auto_lock(lock_);
queue_.push(0);
}
{
base::AutoLock auto_lock(lock_);
queue_.bar();
}
{
base::AutoLock auto_lock(lock_);
queue_.pop();
}
}
private:
NonThreadSafeQueue& queue_;
base::Lock& lock_;
};
AssertReporter* local_reporter = new AssertReporter();
NonThreadSafeQueue queue(local_reporter);
base::Lock lock;
QueueUser queue_user_a(queue, lock);
QueueUser queue_user_b(queue, lock);
base::DelegateSimpleThread thread_a(&queue_user_a, "queue_user_thread_a");
base::DelegateSimpleThread thread_b(&queue_user_b, "queue_user_thread_b");
thread_a.Start();
thread_b.Start();
thread_a.Join();
thread_b.Join();
EXPECT_FALSE(local_reporter->fail_state());
}