| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef OS_WIN |
| #include <unistd.h> |
| #include <cstdlib> |
| #endif // OS_WIN |
| |
| #include "base/file_util.h" |
| #include "base/logging.h" |
| #include "base/process_mutex.h" |
| #include "base/system_util.h" |
| #include "base/util.h" |
| #include "testing/base/public/gunit.h" |
| |
| DECLARE_string(test_tmpdir); |
| |
| namespace mozc { |
| namespace { |
| static const char kName[] = "process_mutex_test"; |
| |
| class ProcessMutexTest : public testing::Test { |
| protected: |
| virtual void SetUp() { |
| original_user_profile_dir_ = SystemUtil::GetUserProfileDirectory(); |
| SystemUtil::SetUserProfileDirectory(FLAGS_test_tmpdir); |
| } |
| |
| virtual void TearDown() { |
| ProcessMutex mutex(kName); |
| if (FileUtil::FileExists(mutex.lock_filename())) { |
| LOG(FATAL) << "Lock file unexpectedly remains: " << mutex.lock_filename(); |
| } |
| |
| SystemUtil::SetUserProfileDirectory(original_user_profile_dir_); |
| } |
| |
| private: |
| string original_user_profile_dir_; |
| }; |
| |
| #ifndef OS_WIN |
| TEST_F(ProcessMutexTest, ForkProcessMutexTest) { |
| const pid_t pid = ::fork(); |
| if (pid == 0) { // child process |
| ProcessMutex m(kName); |
| EXPECT_TRUE(m.Lock()); |
| Util::Sleep(3000); |
| EXPECT_TRUE(m.UnLock()); |
| ::exit(0); |
| } else if (pid > 0) { // parent process |
| ProcessMutex m(kName); |
| Util::Sleep(1000); |
| |
| // kName should be locked by child |
| EXPECT_FALSE(m.Lock()); |
| |
| Util::Sleep(5000); |
| |
| // child process already finished, so now we can lock |
| EXPECT_TRUE(m.Lock()); |
| EXPECT_TRUE(m.UnLock()); |
| } else { |
| LOG(FATAL) << "fork() failed"; |
| } |
| } |
| #endif |
| |
| TEST_F(ProcessMutexTest, BasicTest) { |
| ProcessMutex m1(kName); |
| EXPECT_TRUE(m1.Lock()); |
| EXPECT_TRUE(m1.locked()); |
| |
| ProcessMutex m2(kName); |
| EXPECT_FALSE(m2.Lock()); |
| EXPECT_FALSE(m2.locked()); |
| |
| ProcessMutex m3(kName); |
| EXPECT_FALSE(m3.Lock()); |
| EXPECT_FALSE(m3.locked()); |
| |
| EXPECT_TRUE(m1.UnLock()); |
| EXPECT_FALSE(m1.locked()); |
| |
| EXPECT_TRUE(m2.Lock()); |
| EXPECT_TRUE(m2.locked()); |
| |
| EXPECT_FALSE(m3.Lock()); |
| EXPECT_FALSE(m3.locked()); |
| } |
| |
| TEST_F(ProcessMutexTest, RecursiveLockTest) { |
| ProcessMutex mutex(kName); |
| EXPECT_TRUE(mutex.Lock()); |
| EXPECT_TRUE(mutex.locked()); |
| EXPECT_FALSE(mutex.Lock()) << "Recursive lock should fail."; |
| EXPECT_TRUE(mutex.locked()); |
| EXPECT_TRUE(mutex.UnLock()); |
| EXPECT_FALSE(mutex.locked()); |
| } |
| |
| } // namespace |
| } // namespace mozc |