daf21c3f69
This patch overhalls the libc++ test format/configuration in order to fully support modules. By "fully support" I mean get almost all of the tests passing. The main hurdle for doing this is handling tests that `#define _LIBCPP_FOO` macros to test a different configuration. This patch deals with these tests in the following ways: 1. For tests that define single `_LIBCPP_ABI_FOO` macros have been annotated with `// MODULES_DEFINES: _LIBCPP_ABI_FOO`. This allows the test suite to define the macro on the command line so it uses a different set of modules. 2. Tests for libc++'s debug mode (which define custom `_LIBCPP_ASSERT`) are automatically detected by the test suite and are compiled and run with modules disabled. This patch also cleans up how the `CXXCompiler` helper class handles enabling/disabling language features. NOTE: This patch uses `LIT` features which were only committed to LLVM today. If this patch breaks running the libc++ tests you probably need to update LLVM. llvm-svn: 288728
67 lines
1.4 KiB
C++
67 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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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++98, c++11
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// FLAKY_TEST.
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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 "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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ms WaitTime = ms(250);
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// Thread sanitizer causes more overhead and will sometimes cause this test
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// to fail. To prevent this we give Thread sanitizer more time to complete the
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// test.
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#if !TEST_HAS_FEATURE(thread_sanitizer)
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ms Tolerance = ms(50);
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#else
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ms Tolerance = ms(100);
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#endif
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void f()
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{
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time_point t0 = Clock::now();
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m.lock();
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time_point t1 = Clock::now();
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m.unlock();
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ns d = t1 - t0 - ms(250);
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assert(d < ms(50)); // within 50ms
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}
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int main()
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{
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m.lock();
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std::thread t(f);
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std::this_thread::sleep_for(ms(250));
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m.unlock();
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t.join();
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}
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