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| author | Torvald Riegel <triegel@redhat.com> | 2015-06-23 15:22:25 +0200 |
|---|---|---|
| committer | Torvald Riegel <triegel@redhat.com> | 2015-06-30 15:57:15 +0200 |
| commit | 4eb984d3ab5641ce7992204756ac15a61f5f7181 (patch) | |
| tree | 12603bae9d2582033a3186174d1379121e1ea642 /sysdeps/x86_64/bits/atomic.h | |
| parent | e02920bc029019443326eecaa7b267b78ff2892e (diff) | |
| download | glibc-4eb984d3ab5641ce7992204756ac15a61f5f7181.tar.gz glibc-4eb984d3ab5641ce7992204756ac15a61f5f7181.tar.xz glibc-4eb984d3ab5641ce7992204756ac15a61f5f7181.zip | |
Clean up BUSY_WAIT_NOP and atomic_delay.
This patch combines BUSY_WAIT_NOP and atomic_delay into a new atomic_spin_nop function and adjusts all clients. The new function is put into atomic.h because what is best done in a spin loop is architecture-specific, and atomics must be used for spinning. The function name is meant to tell users that this has no effect on synchronization semantics but is a performance aid for spinning.
Diffstat (limited to 'sysdeps/x86_64/bits/atomic.h')
| -rw-r--r-- | sysdeps/x86_64/bits/atomic.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h index 203d92c20d..337b334db1 100644 --- a/sysdeps/x86_64/bits/atomic.h +++ b/sysdeps/x86_64/bits/atomic.h @@ -410,7 +410,7 @@ typedef uintmax_t uatomic_max_t; __result; }) -#define atomic_delay() asm ("rep; nop") +#define atomic_spin_nop() asm ("rep; nop") #define __arch_and_body(lock, mem, mask) \ |