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-rw-r--r--src/google/protobuf/stubs/once_unittest.cc254
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diff --git a/src/google/protobuf/stubs/once_unittest.cc b/src/google/protobuf/stubs/once_unittest.cc
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index d5f7779e..00000000
--- a/src/google/protobuf/stubs/once_unittest.cc
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@@ -1,254 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc. All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// 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.
-
-// Author: kenton@google.com (Kenton Varda)
-
-#ifdef _WIN32
-#include <windows.h>
-#else
-#include <unistd.h>
-#include <pthread.h>
-#endif
-
-#include <google/protobuf/stubs/once.h>
-#include <google/protobuf/testing/googletest.h>
-#include <gtest/gtest.h>
-
-namespace google {
-namespace protobuf {
-namespace {
-
-class OnceInitTest : public testing::Test {
- protected:
- void SetUp() {
- state_ = INIT_NOT_STARTED;
- current_test_ = this;
- }
-
- // Since ProtobufOnceType is only allowed to be allocated in static storage,
- // each test must use a different pair of ProtobufOnceType objects which it
- // must declare itself.
- void SetOnces(ProtobufOnceType* once, ProtobufOnceType* recursive_once) {
- once_ = once;
- recursive_once_ = recursive_once;
- }
-
- void InitOnce() {
- GoogleOnceInit(once_, &InitStatic);
- }
- void InitRecursiveOnce() {
- GoogleOnceInit(recursive_once_, &InitRecursiveStatic);
- }
-
- void BlockInit() { init_blocker_.Lock(); }
- void UnblockInit() { init_blocker_.Unlock(); }
-
- class TestThread {
- public:
- TestThread(Closure* callback)
- : done_(false), joined_(false), callback_(callback) {
-#ifdef _WIN32
- thread_ = CreateThread(NULL, 0, &Start, this, 0, NULL);
-#else
- pthread_create(&thread_, NULL, &Start, this);
-#endif
- }
- ~TestThread() {
- if (!joined_) Join();
- }
-
- bool IsDone() {
- MutexLock lock(&done_mutex_);
- return done_;
- }
- void Join() {
- joined_ = true;
-#ifdef _WIN32
- WaitForSingleObject(thread_, INFINITE);
- CloseHandle(thread_);
-#else
- pthread_join(thread_, NULL);
-#endif
- }
-
- private:
-#ifdef _WIN32
- HANDLE thread_;
-#else
- pthread_t thread_;
-#endif
-
- Mutex done_mutex_;
- bool done_;
- bool joined_;
- Closure* callback_;
-
-#ifdef _WIN32
- static DWORD WINAPI Start(LPVOID arg) {
-#else
- static void* Start(void* arg) {
-#endif
- reinterpret_cast<TestThread*>(arg)->Run();
- return 0;
- }
-
- void Run() {
- callback_->Run();
- MutexLock lock(&done_mutex_);
- done_ = true;
- }
- };
-
- TestThread* RunInitOnceInNewThread() {
- return new TestThread(NewCallback(this, &OnceInitTest::InitOnce));
- }
- TestThread* RunInitRecursiveOnceInNewThread() {
- return new TestThread(
- NewCallback(this, &OnceInitTest::InitRecursiveOnce));
- }
-
- enum State {
- INIT_NOT_STARTED,
- INIT_STARTED,
- INIT_DONE
- };
- State CurrentState() {
- MutexLock lock(&mutex_);
- return state_;
- }
-
- void WaitABit() {
-#ifdef _WIN32
- Sleep(1000);
-#else
- sleep(1);
-#endif
- }
-
- private:
- Mutex mutex_;
- Mutex init_blocker_;
- State state_;
- ProtobufOnceType* once_;
- ProtobufOnceType* recursive_once_;
-
- void Init() {
- MutexLock lock(&mutex_);
- EXPECT_EQ(INIT_NOT_STARTED, state_);
- state_ = INIT_STARTED;
- mutex_.Unlock();
- init_blocker_.Lock();
- init_blocker_.Unlock();
- mutex_.Lock();
- state_ = INIT_DONE;
- }
-
- static OnceInitTest* current_test_;
- static void InitStatic() { current_test_->Init(); }
- static void InitRecursiveStatic() { current_test_->InitOnce(); }
-};
-
-OnceInitTest* OnceInitTest::current_test_ = NULL;
-
-GOOGLE_PROTOBUF_DECLARE_ONCE(simple_once);
-
-TEST_F(OnceInitTest, Simple) {
- SetOnces(&simple_once, NULL);
-
- EXPECT_EQ(INIT_NOT_STARTED, CurrentState());
- InitOnce();
- EXPECT_EQ(INIT_DONE, CurrentState());
-
- // Calling again has no effect.
- InitOnce();
- EXPECT_EQ(INIT_DONE, CurrentState());
-}
-
-GOOGLE_PROTOBUF_DECLARE_ONCE(recursive_once1);
-GOOGLE_PROTOBUF_DECLARE_ONCE(recursive_once2);
-
-TEST_F(OnceInitTest, Recursive) {
- SetOnces(&recursive_once1, &recursive_once2);
-
- EXPECT_EQ(INIT_NOT_STARTED, CurrentState());
- InitRecursiveOnce();
- EXPECT_EQ(INIT_DONE, CurrentState());
-}
-
-GOOGLE_PROTOBUF_DECLARE_ONCE(multiple_threads_once);
-
-TEST_F(OnceInitTest, MultipleThreads) {
- SetOnces(&multiple_threads_once, NULL);
-
- scoped_ptr<TestThread> threads[4];
- EXPECT_EQ(INIT_NOT_STARTED, CurrentState());
- for (int i = 0; i < 4; i++) {
- threads[i].reset(RunInitOnceInNewThread());
- }
- for (int i = 0; i < 4; i++) {
- threads[i]->Join();
- }
- EXPECT_EQ(INIT_DONE, CurrentState());
-}
-
-GOOGLE_PROTOBUF_DECLARE_ONCE(multiple_threads_blocked_once1);
-GOOGLE_PROTOBUF_DECLARE_ONCE(multiple_threads_blocked_once2);
-
-TEST_F(OnceInitTest, MultipleThreadsBlocked) {
- SetOnces(&multiple_threads_blocked_once1, &multiple_threads_blocked_once2);
-
- scoped_ptr<TestThread> threads[8];
- EXPECT_EQ(INIT_NOT_STARTED, CurrentState());
-
- BlockInit();
- for (int i = 0; i < 4; i++) {
- threads[i].reset(RunInitOnceInNewThread());
- }
- for (int i = 4; i < 8; i++) {
- threads[i].reset(RunInitRecursiveOnceInNewThread());
- }
-
- WaitABit();
-
- // We should now have one thread blocked inside Init(), four blocked waiting
- // for Init() to complete, and three blocked waiting for InitRecursive() to
- // complete.
- EXPECT_EQ(INIT_STARTED, CurrentState());
- UnblockInit();
-
- for (int i = 0; i < 8; i++) {
- threads[i]->Join();
- }
- EXPECT_EQ(INIT_DONE, CurrentState());
-}
-
-} // anonymous namespace
-} // namespace protobuf
-} // namespace google