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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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f2369cbf31
Both tests define a execute_native_thread_routine function that we took from libstdc++. Unfortunately because of a bug this function is not local in some versions of libstdc++ and so our similar named function will clash when trying to link. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70476#c2 Simply rename our version to work around this. Since we don't build this part of the test code for gcc >= 6, this issue only happens if the buggy libstdc++ thread code is used together with gcc 5. This is the case with for example devtoolset-4-gcc-5. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15842
70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
// Test whether no race conditions are reported on std::thread. Note: since
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// the implementation of std::thread uses the shared pointer implementation,
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// that implementation has to be annotated in order to avoid false positives.
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// See also http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html for more
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// information.
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#include "../../drd/drd.h"
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#define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(addr) \
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ANNOTATE_HAPPENS_BEFORE(addr)
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#define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(addr) \
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ANNOTATE_HAPPENS_AFTER(addr)
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#include <iostream>
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#include <thread>
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int main(int argc, char** argv)
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{
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std::thread t( []() { } );
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t.join();
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std::cerr << "Done.\n";
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return 0;
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}
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#if defined(__GNUC__) && __GNUC__ -0 < 6
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//
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// From libstdc++-v3/src/c++11/thread.cc
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//
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extern "C" void* _v_execute_native_thread_routine(void* __p)
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{
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std::thread::_Impl_base* __t = static_cast<std::thread::_Impl_base*>(__p);
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std::thread::__shared_base_type __local;
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__local.swap(__t->_M_this_ptr);
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__try {
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__t->_M_run();
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} __catch(const __cxxabiv1::__forced_unwind&) {
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__throw_exception_again;
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} __catch(...) {
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std::terminate();
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}
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return 0;
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}
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#include <system_error>
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namespace std
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{
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void thread::_M_start_thread(__shared_base_type __b)
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{
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if (!__gthread_active_p())
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#if __EXCEPTIONS
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throw system_error(make_error_code(errc::operation_not_permitted),
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"Enable multithreading to use std::thread");
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#else
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__throw_system_error(int(errc::operation_not_permitted));
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#endif
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__b->_M_this_ptr = __b;
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int __e = __gthread_create(&_M_id._M_thread, _v_execute_native_thread_routine,
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__b.get());
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if (__e) {
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__b->_M_this_ptr.reset();
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__throw_system_error(__e);
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}
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}
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}
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#endif
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