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[BUILD] Improve how to handle yield() in ARM. #3129

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merged 3 commits into from
Nov 7, 2024
Merged

[BUILD] Improve how to handle yield() in ARM. #3129

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c4ad65b
Improve how to handle yield() in ARM.
santiagorr Nov 6, 2024
05bc155
Merge branch 'main' into arm-yield
ThomsonTan Nov 6, 2024
3b6d64a
Merge branch 'main' into arm-yield
marcalff Nov 7, 2024
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6 changes: 4 additions & 2 deletions api/include/opentelemetry/common/spin_lock_mutex.h
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Original file line number Diff line number Diff line change
Expand Up @@ -68,8 +68,10 @@ class SpinLockMutex
# else
__builtin_ia32_pause();
# endif
#elif defined(__arm__)
__asm__ volatile("yield" ::: "memory");
#elif defined(__armel__) || defined(__ARMEL__)
asm volatile("nop" ::: "memory");
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#elif defined(__arm__) || defined(__aarch64__) // arm big endian / arm64
__asm__ __volatile__("yield" ::: "memory");
#else
// TODO: Issue PAGE/YIELD on other architectures.
#endif
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6 changes: 4 additions & 2 deletions api/test/common/spinlock_benchmark.cc
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Expand Up @@ -102,8 +102,10 @@ static void BM_ProcYieldSpinLockThrashing(benchmark::State &s)
# else
__builtin_ia32_pause();
# endif
#elif defined(__arm__)
__asm__ volatile("yield" ::: "memory");
#elif defined(__armel__) || defined(__ARMEL__)
asm volatile("nop" ::: "memory");
#elif defined(__arm__) || defined(__aarch64__) // arm big endian / arm64
__asm__ __volatile__("yield" ::: "memory");
#endif
}
},
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