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Add unlikely() to CHECK_FOR_INTERRUPTS()

Fri, 5 Jun 2020 20:49:25 +0000 (16:49 -0400)

committer Joe Conway <mail@joeconway.com>

Fri, 5 Jun 2020 20:49:25 +0000 (16:49 -0400)

Add the unlikely() branch hint macro to CHECK_FOR_INTERRUPTS().
Backpatch to REL_10_STABLE where we first started using unlikely().

Discussion: https://www.postgresql.org/message-id/flat/8692553c-7fe8-17d9-cbc1-7cddb758f4c6%40joeconway.com

src/include/miscadmin.h patch | blob | blame | history

diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h

index 14fa127ab118aaa2f917fd02481c9b709b378c5e..18bc8a7b9045ca80802ae740a4e122e87e1abdda 100644 (file)

--- a/src/include/miscadmin.h

+++ b/src/include/miscadmin.h

@@ -98,16 +98,16 @@ extern void ProcessInterrupts(void);

#define CHECK_FOR_INTERRUPTS() \

do { \

- if (InterruptPending) \

+ if (unlikely(InterruptPending)) \

ProcessInterrupts(); \

} while(0)

#else /* WIN32 */

#define CHECK_FOR_INTERRUPTS() \

do { \

- if (UNBLOCKED_SIGNAL_QUEUE()) \

+ if (unlikely(UNBLOCKED_SIGNAL_QUEUE())) \

pgwin32_dispatch_queued_signals(); \

- if (InterruptPending) \

+ if (unlikely(InterruptPending)) \

ProcessInterrupts(); \

} while(0)

#endif /* WIN32 */

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