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// Copyright 2008, 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.
#include <windows.h>
#include <process.h>
#include "base/thread_local_storage.h"
#include "testing/gtest/include/gtest/gtest.h"
// ignore warnings about ptr->int conversions that we use when
// storing ints into ThreadLocalStorage.
#pragma warning(disable : 4311 4312)
namespace {
class ThreadLocalStorageTest : public testing::Test {
};
}
TEST(ThreadLocalStorageTest, Basics) {
int index = ThreadLocalStorage::Alloc();
ThreadLocalStorage::Set(index, reinterpret_cast<void*>(123));
int value = reinterpret_cast<int>(ThreadLocalStorage::Get(index));
EXPECT_EQ(value, 123);
}
const int kInitialTlsValue = 0x5555;
static int tls_index = 0;
unsigned __stdcall TLSTestThreadMain(void* param) {
// param contains the thread local storage index.
int *index = reinterpret_cast<int*>(param);
*index = kInitialTlsValue;
ThreadLocalStorage::Set(tls_index, index);
int *ptr = static_cast<int*>(ThreadLocalStorage::Get(tls_index));
EXPECT_EQ(ptr, index);
EXPECT_EQ(*ptr, kInitialTlsValue);
*index = 0;
ptr = static_cast<int*>(ThreadLocalStorage::Get(tls_index));
EXPECT_EQ(ptr, index);
EXPECT_EQ(*ptr, 0);
return 0;
}
void ThreadLocalStorageCleanup(void *value) {
int *ptr = reinterpret_cast<int*>(value);
if (ptr)
*ptr = kInitialTlsValue;
}
TEST(ThreadLocalStorageTest, TLSDestructors) {
// Create a TLS index with a destructor. Create a set of
// threads that set the TLS, while the destructor cleans it up.
// After the threads finish, verify that the value is cleaned up.
const int kNumThreads = 5;
HANDLE threads[kNumThreads];
int values[kNumThreads];
tls_index = ThreadLocalStorage::Alloc(ThreadLocalStorageCleanup);
// Spawn the threads.
for (int16 index = 0; index < kNumThreads; index++) {
values[index] = kInitialTlsValue;
void *argument = static_cast<void*>(&(values[index]));
unsigned thread_id;
threads[index] = reinterpret_cast<HANDLE>(
_beginthreadex(NULL, 0, TLSTestThreadMain, argument, 0, &thread_id));
EXPECT_NE(threads[index], (HANDLE)NULL);
}
// Wait for the threads to finish.
for (int index = 0; index < kNumThreads; index++) {
DWORD rv = WaitForSingleObject(threads[index], 60*1000);
EXPECT_EQ(rv, WAIT_OBJECT_0); // verify all threads finished
// verify that the destructor was called and that we reset.
EXPECT_EQ(values[index], kInitialTlsValue);
}
}
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