From: Peter Eisentraut Date: Tue, 19 Mar 2019 13:07:08 +0000 (+0100) Subject: Reorder LOCALLOCK structure members to compact the size X-Git-Tag: REL_12_BETA1~492 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=28988a84cf19c01dba3c3fb40e95d9cd6e4888da;p=postgresql Reorder LOCALLOCK structure members to compact the size Save 8 bytes (on x86-64) by filling up padding holes. Author: Takayuki Tsunakawa Discussion: https://www.postgresql.org/message-id/20190219001639.ft7kxir2iz644alf@alap3.anarazel.de --- diff --git a/src/include/storage/lock.h b/src/include/storage/lock.h index 16b927cb80..badf7fd682 100644 --- a/src/include/storage/lock.h +++ b/src/include/storage/lock.h @@ -404,15 +404,15 @@ typedef struct LOCALLOCK LOCALLOCKTAG tag; /* unique identifier of locallock entry */ /* data */ + uint32 hashcode; /* copy of LOCKTAG's hash value */ LOCK *lock; /* associated LOCK object, if any */ PROCLOCK *proclock; /* associated PROCLOCK object, if any */ - uint32 hashcode; /* copy of LOCKTAG's hash value */ int64 nLocks; /* total number of times lock is held */ - bool holdsStrongLockCount; /* bumped FastPathStrongRelationLocks */ - bool lockCleared; /* we read all sinval msgs for lock */ int numLockOwners; /* # of relevant ResourceOwners */ int maxLockOwners; /* allocated size of array */ LOCALLOCKOWNER *lockOwners; /* dynamically resizable array */ + bool holdsStrongLockCount; /* bumped FastPathStrongRelationLocks */ + bool lockCleared; /* we read all sinval msgs for lock */ } LOCALLOCK; #define LOCALLOCK_LOCKMETHOD(llock) ((llock).tag.lock.locktag_lockmethodid)