Change PG_DELAY from msec to usec and use it consistenly rather than

select().   Add Win32 Sleep() for delay.

Author: bmomjian

src/backend/access/transam/xact.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.159 2004/01/07 18:56:24 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.160 2004/01/09 21:08:46 momjian Exp $
  *
  * NOTES
  *		Transaction aborts can now occur two ways:
@@ -561,13 +561,7 @@ RecordTransactionCommit(void)
 			 */
 			if (CommitDelay > 0 && enableFsync &&
 				CountActiveBackends() >= CommitSiblings)
-			{
-				struct timeval delay;
-
-				delay.tv_sec = 0;
-				delay.tv_usec = CommitDelay;
-				(void) select(0, NULL, NULL, NULL, &delay);
-			}
+				PG_USLEEP(CommitDelay);
 
 			XLogFlush(recptr);
 		}

src/backend/storage/buffer/bufmgr.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.151 2004/01/07 18:56:27 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.152 2004/01/09 21:08:49 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1031,9 +1031,7 @@ BufferBackgroundWriter(void)
 		 * there was nothing to do at all.
 		 */
 		if (n > 0)
-		{
-			PG_DELAY(BgWriterDelay);
-		}
+			PG_USLEEP(BgWriterDelay * 1000);
 		else
 			sleep(10);
 	}

src/backend/storage/lmgr/s_lock.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/s_lock.c,v 1.23 2003/12/27 20:58:58 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/s_lock.c,v 1.24 2004/01/09 21:08:49 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -19,7 +19,7 @@
 #include <unistd.h>
 
 #include "storage/s_lock.h"
-
+#include "miscadmin.h"
 
 /*
  * s_lock_stuck() - complain about a stuck spinlock
@@ -84,7 +84,6 @@ s_lock(volatile slock_t *lock, const char *file, int line)
 	int			spins = 0;
 	int			delays = 0;
 	int			cur_delay = MIN_DELAY_CSEC;
-	struct timeval delay;
 
 	while (TAS(lock))
 	{
@@ -97,9 +96,7 @@ s_lock(volatile slock_t *lock, const char *file, int line)
 			if (++delays > NUM_DELAYS)
 				s_lock_stuck(lock, file, line);
 
-			delay.tv_sec = cur_delay / 100;
-			delay.tv_usec = (cur_delay % 100) * 10000;
-			(void) select(0, NULL, NULL, NULL, &delay);
+			PG_USLEEP(cur_delay * 10000);
 
 #if defined(S_LOCK_TEST)
 			fprintf(stdout, "*");

src/include/miscadmin.h

@@ -12,7 +12,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/miscadmin.h,v 1.142 2004/01/06 23:15:22 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/miscadmin.h,v 1.143 2004/01/09 21:08:50 momjian Exp $
  *
  * NOTES
  *	  some of the information in this file should be moved to
@@ -75,34 +75,40 @@ extern volatile uint32 CritSectionCount;
 extern void ProcessInterrupts(void);
 
 #define CHECK_FOR_INTERRUPTS() \
-	do { \
-		if (InterruptPending) \
-			ProcessInterrupts(); \
-	} while(0)
+do { \
+	if (InterruptPending) \
+		ProcessInterrupts(); \
+} while(0)
 
 #define HOLD_INTERRUPTS()  (InterruptHoldoffCount++)
 
 #define RESUME_INTERRUPTS() \
-	do { \
-		Assert(InterruptHoldoffCount > 0); \
-		InterruptHoldoffCount--; \
-	} while(0)
+do { \
+	Assert(InterruptHoldoffCount > 0); \
+	InterruptHoldoffCount--; \
+} while(0)
 
 #define START_CRIT_SECTION()  (CritSectionCount++)
 
 #define END_CRIT_SECTION() \
-	do { \
-		Assert(CritSectionCount > 0); \
-		CritSectionCount--; \
-	} while(0)
-
-#define PG_DELAY(_msec) \
-{ \
+do { \
+	Assert(CritSectionCount > 0); \
+	CritSectionCount--; \
+} while(0)
+
+#define PG_USLEEP(_usec) \
+do { \
+#ifndef WIN32
+	/* This will overflow on systems with 32-bit ints for > ~2000 secs */ \
 	struct timeval delay; \
-	delay.tv_sec = (_msec) / 1000; \
-	delay.tv_usec = ((_msec) % 1000) * 1000; \
+	\
+	delay.tv_sec = (_usec) / 1000000; \
+	delay.tv_usec = ((_usec) % 1000000); \
 	(void) select(0, NULL, NULL, NULL, &delay); \
-}
+#else
+	Sleep(_usec < 500) ? 1 : (_usec+500)/ 1000);
+#endif
+} while(0)
 
 /*****************************************************************************
  *	  globals.h --															 *