564628014c
We create threads using std::thread in various places in the test suite. However, the usual std::thread constructor may not work on all platforms, e.g. on platforms where passing a stack size is required to create a thread. This commit introduces a simple indirection that makes it easier to tweak how threads are created inside the test suite on various platforms. Note that tests that are purposefully calling std::thread's constructor directly (e.g. because that is what they're testing) were not modified.
68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// UNSUPPORTED: libcpp-has-no-threads
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// UNSUPPORTED: c++03, c++11
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// shared_timed_mutex was introduced in macosx10.12
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// UNSUPPORTED: with_system_cxx_lib=macosx10.11
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// UNSUPPORTED: with_system_cxx_lib=macosx10.10
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// UNSUPPORTED: with_system_cxx_lib=macosx10.9
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// <shared_mutex>
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// class shared_timed_mutex;
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// void lock();
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#include <shared_mutex>
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#include <thread>
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#include <cstdlib>
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#include <cassert>
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#include "make_test_thread.h"
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#include "test_macros.h"
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std::shared_timed_mutex m;
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typedef std::chrono::system_clock Clock;
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typedef Clock::time_point time_point;
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typedef Clock::duration duration;
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typedef std::chrono::milliseconds ms;
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typedef std::chrono::nanoseconds ns;
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std::atomic<bool> ready(false);
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time_point start;
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ms WaitTime = ms(250);
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void f()
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{
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ready.store(true);
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m.lock();
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time_point t0 = start;
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time_point t1 = Clock::now();
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m.unlock();
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assert(t0.time_since_epoch() > ms(0));
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assert(t1 - t0 >= WaitTime);
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}
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int main(int, char**)
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{
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m.lock();
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std::thread t = support::make_test_thread(f);
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while (!ready)
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std::this_thread::yield();
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start = Clock::now();
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std::this_thread::sleep_for(WaitTime);
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m.unlock();
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t.join();
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return 0;
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}
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