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git.ipfire.org Git - thirdparty/gcc.git/commit - libstdc++-v3/src/c++11/futex.cc
libstdc++: Optimize synchronization in std::future if futexes are available.
* src/c++11/futex.cc: New file.
* include/bits/atomic_futex.h: New file.
* include/std/future (__future_base::_State_baseV2): Use
atomic_futex_unsigned instead of mutex+condvar.
* src/c++11/futex.cc: Likewise.
* include/Makefile.am: Add atomic_futex.h.
* include/Makefile.in: Likewise.
* src/c++11/Makefile.am: Add futex.cc.
* src/c++11/Makefile.in: Likewise.
From-SVN: r219770