Commitc129c16

Neil Conway

committed

Slight refactoring and optimization of some code in WaitOnLock().

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Lines changed: 6 additions & 4 deletions

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.147 2005/03/01 21:14:59 tgl Exp $`
	`11`	`+ * $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.148 2005/03/11 03:52:06 neilc Exp $`
`12`	`12`	`*`
`13`	`13`	`* NOTES`
`14`	`14`	`* Outside modules can create a lock table and acquire/release`
`@@ -1076,16 +1076,18 @@ WaitOnLock(LOCKMETHODID lockmethodid, LOCALLOCK *locallock,`
`1076`	`1076`	`LockMethodlockMethodTable=LockMethods[lockmethodid];`
`1077`	`1077`	`char*new_status,`
`1078`	`1078`	`*old_status;`
	`1079`	`+size_tlen;`
`1079`	`1080`
`1080`	`1081`	`Assert(lockmethodid<NumLockMethods);`
`1081`	`1082`
`1082`	`1083`	`LOCK_PRINT("WaitOnLock: sleeping on lock",`
`1083`	`1084`	`locallock->lock,locallock->tag.mode);`
`1084`	`1085`
`1085`	`1086`	`old_status=pstrdup(get_ps_display());`
`1086`		`-new_status= (char*)palloc(strlen(old_status)+10);`
`1087`		`-strcpy(new_status,old_status);`
`1088`		`-strcat(new_status," waiting");`
	`1087`	`+len=strlen(old_status);`
	`1088`	`+new_status= (char*)palloc(len+8+1);`
	`1089`	`+memcpy(new_status,old_status,len);`
	`1090`	`+strcpy(new_status+len," waiting");`
`1089`	`1091`	`set_ps_display(new_status);`
`1090`	`1092`
`1091`	`1093`	`awaitedLock=locallock;`

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