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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-2220] libstdc++: Only use __gthread_yield if gthreads is available Date: Fri, 9 Jul 2021 14:19:45 +0000 (GMT) [thread overview] Message-ID: <20210709141945.919773847813@sourceware.org> (raw) https://gcc.gnu.org/g:2e345e4ad6bb6595a9e3b182aa349d4f306b0921 commit r12-2220-g2e345e4ad6bb6595a9e3b182aa349d4f306b0921 Author: Matheus Castanho <msc@linux.ibm.com> Date: Fri Jul 9 15:13:38 2021 +0100 libstdc++: Only use __gthread_yield if gthreads is available libstdc++-v3/ChangeLog: * include/std/mutex (__lock_impl): Check _GLIBCXX_HAS_GTHREADS before using __gthread_yield. Diff: --- libstdc++-v3/include/std/mutex | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/mutex b/libstdc++-v3/include/std/mutex index eeb51fdb840..7ab4ee12690 100644 --- a/libstdc++-v3/include/std/mutex +++ b/libstdc++-v3/include/std/mutex @@ -618,7 +618,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION return; } } -#ifdef _GLIBCXX_USE_SCHED_YIELD +#if defined _GLIBCXX_HAS_GTHREADS && defined _GLIBCXX_USE_SCHED_YIELD __gthread_yield(); #endif constexpr auto __n = 1 + sizeof...(_L1);
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