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pgindent run before 6.3 release, with Thomas' requested changes.

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This commit is contained in:
Bruce Momjian
1998-02-26 04:46:47 +00:00
parent 757bf69a2e
commit a32450a585
430 changed files with 12390 additions and 10292 deletions
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46
src/backend/storage/lmgr/proc.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.33 1998/02/25 00:31:14 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.34 1998/02/26 04:36:12 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -46,7 +46,7 @@
* This is so that we can support more backends. (system-wide semaphore
* sets run out pretty fast.) -ay 4/95
*
* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.33 1998/02/25 00:31:14 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.34 1998/02/26 04:36:12 momjian Exp $
*/
#include <sys/time.h>
#include <unistd.h>
@@ -457,25 +457,22 @@ ProcSleep(PROC_QUEUE *waitQueue,
dummy;
/*
* If the first entries in the waitQueue have a greater priority than
* we have, we must be a reader, and they must be a writers, and we
* must be here because the current holder is a writer or a
* reader but we don't share shared locks if a writer is waiting.
* We put ourselves after the writers. This way, we have a FIFO, but
* keep the readers together to give them decent priority, and no one
* starves. Because we group all readers together, a non-empty queue
* only has a few possible configurations:
* If the first entries in the waitQueue have a greater priority than
* we have, we must be a reader, and they must be a writers, and we
* must be here because the current holder is a writer or a reader but
* we don't share shared locks if a writer is waiting. We put
* ourselves after the writers. This way, we have a FIFO, but keep
* the readers together to give them decent priority, and no one
* starves. Because we group all readers together, a non-empty queue
* only has a few possible configurations:
*
* [readers]
* [writers]
* [readers][writers]
* [writers][readers]
* [writers][readers][writers]
* [readers] [writers] [readers][writers] [writers][readers]
* [writers][readers][writers]
*
* In a full queue, we would have a reader holding a lock, then a
* writer gets the lock, then a bunch of readers, made up of readers
* who could not share the first readlock because a writer was waiting,
* and new readers arriving while the writer had the lock.
* In a full queue, we would have a reader holding a lock, then a writer
* gets the lock, then a bunch of readers, made up of readers who
* could not share the first readlock because a writer was waiting,
* and new readers arriving while the writer had the lock.
*
*/
proc = (PROC *) MAKE_PTR(waitQueue->links.prev);
@@ -486,13 +483,13 @@ ProcSleep(PROC_QUEUE *waitQueue,
proc = (PROC *) MAKE_PTR(proc->links.prev);
/* The rest of the queue is FIFO, with readers first, writers last */
for ( ; i < waitQueue->size && proc->prio <= prio; i++)
for (; i < waitQueue->size && proc->prio <= prio; i++)
proc = (PROC *) MAKE_PTR(proc->links.prev);
MyProc->prio = prio;
MyProc->token = token;
MyProc->waitLock = lock;
/* -------------------
* currently, we only need this for the ProcWakeup routines
* -------------------
@@ -523,7 +520,7 @@ ProcSleep(PROC_QUEUE *waitQueue,
do
{
MyProc->errType = NO_ERROR; /* reset flag after deadlock check */
MyProc->errType = NO_ERROR; /* reset flag after deadlock check */
if (setitimer(ITIMER_REAL, &timeval, &dummy))
elog(FATAL, "ProcSleep: Unable to set timer for process wakeup");
@@ -535,8 +532,9 @@ ProcSleep(PROC_QUEUE *waitQueue,
* --------------
*/
IpcSemaphoreLock(MyProc->sem.semId, MyProc->sem.semNum, IpcExclusiveLock);
} while (MyProc->errType == STATUS_NOT_FOUND); /* sleep after deadlock check */
} while (MyProc->errType == STATUS_NOT_FOUND); /* sleep after deadlock
* check */
/* ---------------
* We were awoken before a timeout - now disable the timer
* ---------------