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* [gcc r11-7293] libstdc++: Fix __thread_relax for non-gthreads non-x86 targets
@ 2021-02-19 11:12 Jonathan Wakely
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From: Jonathan Wakely @ 2021-02-19 11:12 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:9d449189ee4304ce4f250351c8aa393324421eef
commit r11-7293-g9d449189ee4304ce4f250351c8aa393324421eef
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Fri Feb 19 09:54:04 2021 +0000
libstdc++: Fix __thread_relax for non-gthreads non-x86 targets
My recent change to the preprocessor conditions in __thread_relax() was
supposed to also change the __gthread_yield() call to __thread_yield(),
which has the right preprocessor checks. Instead I just removed the
check for _GLIBCXX_USE_SCHED_YIELD which means the __gthread_yield()
call will be ill-formed for non-gthreads targets, and targets without
sched_yield(). This fixes it properly.
libstdc++-v3/ChangeLog:
* include/bits/atomic_wait.h (__thread_relax()): Call
__thread_yield() not __gthread_yield().
Diff:
---
libstdc++-v3/include/bits/atomic_wait.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/include/bits/atomic_wait.h b/libstdc++-v3/include/bits/atomic_wait.h
index 37085ae8e50..424fccbe4c5 100644
--- a/libstdc++-v3/include/bits/atomic_wait.h
+++ b/libstdc++-v3/include/bits/atomic_wait.h
@@ -217,7 +217,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__thread_yield() noexcept
{
#if defined _GLIBCXX_HAS_GTHREADS && defined _GLIBCXX_USE_SCHED_YIELD
- __gthread_yield();
+ __gthread_yield();
#endif
}
@@ -227,7 +227,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
#if defined __i386__ || defined __x86_64__
__builtin_ia32_pause();
#else
- __gthread_yield();
+ __thread_yield();
#endif
}
} // namespace __detail
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2021-02-19 11:12 [gcc r11-7293] libstdc++: Fix __thread_relax for non-gthreads non-x86 targets Jonathan Wakely
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