// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors // Licensed under the MIT License: // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. #include "threadlocal.h" #include "debug.h" #include "thread.h" #include <kj/compat/gtest.h> namespace kj { namespace { KJ_THREADLOCAL_PTR(uint) tls1 = nullptr; KJ_THREADLOCAL_PTR(uint) tls2; TEST(ThreadLocal, Basic) { // Verify that both started out null. uint* p = tls1; EXPECT_EQ(nullptr, p); p = tls2; EXPECT_EQ(nullptr, p); // Set tls1, then verify that only tls1 changed, not tls2. uint i = 123; tls1 = &i; p = tls1; EXPECT_EQ(&i, p); p = tls2; EXPECT_EQ(nullptr, p); // Check that in another thread, tls1 starts null but can be changed. uint j = 456; bool threadDone = false; Thread([&]() { p = tls1; EXPECT_EQ(nullptr, p); tls1 = &j; p = tls1; EXPECT_EQ(&j, p); threadDone = true; }); EXPECT_TRUE(threadDone); // tls1 didn't change in this thread. p = tls1; EXPECT_EQ(&i, p); } } // namespace } // namespace kj