Commit3911ec5

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Make experiment with spinlocks

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Lines changed: 4 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -60,6 +60,8 @@ typedef struct {`
`60`	`60`	`csn_tsnapshot;/* transaction snaphsot */`
`61`	`61`	`}MtmCurrentTrans;`
`62`	`62`
	`63`	`+/* #define USE_SPINLOCK 1 */`
	`64`	`+`
`63`	`65`	`typedefuint64timestamp_t;`
`64`	`66`
`65`	`67`	`#defineMTM_SHMEM_SIZE (6410241024)`
`@@ -141,7 +143,7 @@ static void MtmProcessUtility(Node parsetree, const char queryString,`
`141`	`143`	`voidMtmLock(LWLockModemode)`
`142`	`144`	`{`
`143`	`145`	`#ifdefUSE_SPINLOCK`
`144`		`-SpinLockAcquire(&ds->hashSpinlock);`
	`146`	`+SpinLockAcquire(&dtm->hashSpinlock);`
`145`	`147`	`#else`
`146`	`148`	`LWLockAcquire(dtm->hashLock,mode);`
`147`	`149`	`#endif`
`@@ -150,7 +152,7 @@ void MtmLock(LWLockMode mode)`
`150`	`152`	`voidMtmUnlock(void)`
`151`	`153`	`{`
`152`	`154`	`#ifdefUSE_SPINLOCK`
`153`		`-SpinLockRelease(&ds->hashSpinlock);`
	`155`	`+SpinLockRelease(&dtm->hashSpinlock);`
`154`	`156`	`#else`
`155`	`157`	`LWLockRelease(dtm->hashLock);`
`156`	`158`	`#endif`

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