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Inline frequently called functions.

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This commit is contained in:
Bruce Momjian
1997-09-18 14:21:02 +00:00
parent bbe2c10c14
commit 8cb4154492
16 changed files with 1098 additions and 793 deletions
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88
src/backend/storage/ipc/spin.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/spin.c,v 1.8 1997/09/08 02:29:02 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/spin.c,v 1.9 1997/09/18 14:20:18 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -27,6 +27,7 @@
#include <errno.h>
#include "postgres.h"
#include "storage/ipc.h"
#include "storage/s_lock.h"
#include "storage/shmem.h"
#include "storage/spin.h"
#include "storage/proc.h"
@@ -80,18 +81,91 @@ InitSpinLocks(int init, IPCKey key)
return (TRUE);
}
#ifdef LOCKDEBUG
#define PRINT_LOCK(LOCK) printf("(locklock = %d, flag = %d, nshlocks = %d, \
shlock = %d, exlock =%d)\n", LOCK->locklock, \
LOCK->flag, LOCK->nshlocks, LOCK->shlock, \
LOCK->exlock)
#endif
/* from ipc.c */
extern SLock *SLockArray;
void
SpinAcquire(SPINLOCK lock)
SpinAcquire(SPINLOCK lockid)
{
ExclusiveLock(lock);
PROC_INCR_SLOCK(lock);
SLock *slckP;
/* This used to be in ipc.c, but move here to reduce function calls */
slckP = &(SLockArray[lockid]);
#ifdef LOCKDEBUG
printf("SpinAcquire(%d)\n", lockid);
printf("IN: ");
PRINT_LOCK(slckP);
#endif
ex_try_again:
S_LOCK(&(slckP->locklock));
switch (slckP->flag)
{
case NOLOCK:
slckP->flag = EXCLUSIVELOCK;
S_LOCK(&(slckP->exlock));
S_LOCK(&(slckP->shlock));
S_UNLOCK(&(slckP->locklock));
#ifdef LOCKDEBUG
printf("OUT: ");
PRINT_LOCK(slckP);
#endif
return;
case SHAREDLOCK:
case EXCLUSIVELOCK:
S_UNLOCK(&(slckP->locklock));
S_LOCK(&(slckP->exlock));
S_UNLOCK(&(slckP->exlock));
goto ex_try_again;
}
PROC_INCR_SLOCK(lockid);
}
void
SpinRelease(SPINLOCK lock)
SpinRelease(SPINLOCK lockid)
{
PROC_DECR_SLOCK(lock);
ExclusiveUnlock(lock);
SLock *slckP;
PROC_DECR_SLOCK(lockid);
/* This used to be in ipc.c, but move here to reduce function calls */
slckP = &(SLockArray[lockid]);
#ifdef LOCKDEBUG
printf("SpinRelease(%d)\n", lockid);
printf("IN: ");
PRINT_LOCK(slckP);
#endif
S_LOCK(&(slckP->locklock));
/* -------------
* give favor to read processes
* -------------
*/
slckP->flag = NOLOCK;
if (slckP->nshlocks > 0)
{
while (slckP->nshlocks > 0)
{
S_UNLOCK(&(slckP->shlock));
S_LOCK(&(slckP->comlock));
}
S_UNLOCK(&(slckP->shlock));
}
else
{
S_UNLOCK(&(slckP->shlock));
}
S_UNLOCK(&(slckP->exlock));
S_UNLOCK(&(slckP->locklock));
#ifdef LOCKDEBUG
printf("OUT: ");
PRINT_LOCK(slckP);
#endif
}
#else /* HAS_TEST_AND_SET */