Update hash and join routines to use fd.c's new temp-file

code, instead of not-very-bulletproof stuff they had before.

Author: tglsfdc

src/backend/access/nbtree/nbtsort.c

@@ -5,7 +5,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Id: nbtsort.c,v 1.37 1999/02/21 03:48:27 scrappy Exp $
+ *	  $Id: nbtsort.c,v 1.38 1999/05/09 00:53:19 tgl Exp $
  *
  * NOTES
  *
@@ -85,11 +85,9 @@ static void _bt_uppershutdown(Relation index, BTPageState *state);
 
 #define MAXTAPES		(7)
 #define TAPEBLCKSZ		(BLCKSZ << 2)
-#define TAPETEMP		"pg_btsortXXXXXXX"
 
 extern int	NDirectFileRead;
 extern int	NDirectFileWrite;
-extern char *mktemp(char *template);
 
 /*
  * this is what we use to shovel BTItems in and out of memory.	it's
@@ -107,7 +105,7 @@ extern char *mktemp(char *template);
 typedef struct
 {
 	int			bttb_magic;		/* magic number */
-	int			bttb_fd;		/* file descriptor */
+	File		bttb_fd;		/* file descriptor */
 	int			bttb_top;		/* top of free space within bttb_data */
 	short		bttb_ntup;		/* number of tuples in this block */
 	short		bttb_eor;		/* End-Of-Run marker */
@@ -380,7 +378,7 @@ _bt_tapereset(BTTapeBlock *tape)
 static void
 _bt_taperewind(BTTapeBlock *tape)
 {
-	FileSeek(tape->bttb_fd, 0, SEEK_SET);
+	FileSeek(tape->bttb_fd, 0L, SEEK_SET);
 }
 
 /*
@@ -411,7 +409,7 @@ _bt_tapeclear(BTTapeBlock *tape)
  * as well as opening a physical tape file.
  */
 static BTTapeBlock *
-_bt_tapecreate(char *fname)
+_bt_tapecreate(void)
 {
 	BTTapeBlock *tape = (BTTapeBlock *) palloc(sizeof(BTTapeBlock));
 
@@ -420,11 +418,7 @@ _bt_tapecreate(char *fname)
 
 	tape->bttb_magic = BTTAPEMAGIC;
 
-#ifndef __CYGWIN32__
-	tape->bttb_fd = FileNameOpenFile(fname, O_RDWR | O_CREAT | O_TRUNC, 0600);
-#else
-	tape->bttb_fd = FileNameOpenFile(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0600);
-#endif
+	tape->bttb_fd = OpenTemporaryFile();
 	Assert(tape->bttb_fd >= 0);
 
 	/* initialize the buffer */
@@ -467,7 +461,7 @@ _bt_tapewrite(BTTapeBlock *tape, int eor)
 static int
 _bt_taperead(BTTapeBlock *tape)
 {
-	int			fd;
+	File		fd;
 	int			nread;
 
 	if (tape->bttb_eor)
@@ -550,9 +544,8 @@ _bt_spoolinit(Relation index, int ntapes, bool isunique)
 {
 	BTSpool    *btspool = (BTSpool *) palloc(sizeof(BTSpool));
 	int			i;
-	char	   *fname = (char *) palloc(sizeof(TAPETEMP) + 1);
 
-	if (btspool == (BTSpool *) NULL || fname == (char *) NULL)
+	if (btspool == (BTSpool *) NULL)
 		elog(ERROR, "_bt_spoolinit: out of memory");
 	MemSet((char *) btspool, 0, sizeof(BTSpool));
 	btspool->bts_ntapes = ntapes;
@@ -567,10 +560,9 @@ _bt_spoolinit(Relation index, int ntapes, bool isunique)
 
 	for (i = 0; i < ntapes; ++i)
 	{
-		btspool->bts_itape[i] =	_bt_tapecreate(mktemp(strcpy(fname, TAPETEMP)));
-		btspool->bts_otape[i] =	_bt_tapecreate(mktemp(strcpy(fname, TAPETEMP)));
+		btspool->bts_itape[i] =	_bt_tapecreate();
+		btspool->bts_otape[i] =	_bt_tapecreate();
 	}
-	pfree((void *) fname);
 
 	_bt_isortcmpinit(index, btspool);
 

src/backend/executor/nodeHash.c

@@ -6,7 +6,7 @@
  * Copyright (c) 1994, Regents of the University of California
  *
  *
- *  $Id: nodeHash.c,v 1.33 1999/05/06 00:30:46 tgl Exp $
+ *  $Id: nodeHash.c,v 1.34 1999/05/09 00:53:20 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -39,9 +39,6 @@
 
 extern int	NBuffers;
 
-#define HJ_TEMP_NAMELEN  16		/* max length for mk_hj_temp file names */
-
-static void mk_hj_temp(char *tempname);
 static int	hashFunc(Datum key, int len, bool byVal);
 static RelativeAddr hashTableAlloc(int size, HashJoinTable hashtable);
 static void * absHashTableAlloc(int size, HashJoinTable hashtable);
@@ -72,7 +69,6 @@ ExecHash(Hash *node)
 	RelativeAddr *batchPos;
 	int		   *batchSizes;
 	int			i;
-	RelativeAddr *innerbatchNames;
 
 	/* ----------------
 	 *	get state info from node
@@ -91,8 +87,6 @@ ExecHash(Hash *node)
 
 	if (nbatch > 0)
 	{							/* if needs hash partition */
-		innerbatchNames = (RelativeAddr *) ABSADDR(hashtable->innerbatchNames);
-
 		/* --------------
 		 *	allocate space for the file descriptors of batch files
 		 *	then open the batch files in the current processes.
@@ -101,13 +95,7 @@ ExecHash(Hash *node)
 		batches = (File *) palloc(nbatch * sizeof(File));
 		for (i = 0; i < nbatch; i++)
 		{
-#ifndef __CYGWIN32__
-			batches[i] = FileNameOpenFile(ABSADDR(innerbatchNames[i]),
-										  O_CREAT | O_RDWR, 0600);
-#else
-			batches[i] = FileNameOpenFile(ABSADDR(innerbatchNames[i]),
-										  O_CREAT | O_RDWR | O_BINARY, 0600);
-#endif
+			batches[i] = OpenTemporaryFile();
 		}
 		hashstate->hashBatches = batches;
 		batchPos = (RelativeAddr *) ABSADDR(hashtable->innerbatchPos);
@@ -291,7 +279,7 @@ absHashTableAlloc(int size, HashJoinTable hashtable)
  * ----------------------------------------------------------------
  */
 #define NTUP_PER_BUCKET			10
-#define FUDGE_FAC				1.5
+#define FUDGE_FAC				2.0
 
 HashJoinTable
 ExecHashTableCreate(Hash *node)
@@ -310,12 +298,9 @@ ExecHashTableCreate(Hash *node)
 	int			totalbuckets;
 	int			bucketsize;
 	int			i;
-	RelativeAddr *outerbatchNames;
 	RelativeAddr *outerbatchPos;
-	RelativeAddr *innerbatchNames;
 	RelativeAddr *innerbatchPos;
 	int		   *innerbatchSizes;
-	RelativeAddr tempname;
 
 	/* ----------------
 	 *	Get information about the size of the relation to be hashed
@@ -425,46 +410,32 @@ ExecHashTableCreate(Hash *node)
 		 *	allocate and initialize the outer batches
 		 * ---------------
 		 */
-		outerbatchNames = (RelativeAddr *)
-			absHashTableAlloc(nbatch * sizeof(RelativeAddr), hashtable);
 		outerbatchPos = (RelativeAddr *)
 			absHashTableAlloc(nbatch * sizeof(RelativeAddr), hashtable);
 		for (i = 0; i < nbatch; i++)
 		{
-			tempname = hashTableAlloc(HJ_TEMP_NAMELEN, hashtable);
-			mk_hj_temp(ABSADDR(tempname));
-			outerbatchNames[i] = tempname;
 			outerbatchPos[i] = -1;
 		}
-		hashtable->outerbatchNames = RELADDR(outerbatchNames);
 		hashtable->outerbatchPos = RELADDR(outerbatchPos);
 		/* ---------------
 		 *	allocate and initialize the inner batches
 		 * ---------------
 		 */
-		innerbatchNames = (RelativeAddr *)
-			absHashTableAlloc(nbatch * sizeof(RelativeAddr), hashtable);
 		innerbatchPos = (RelativeAddr *)
 			absHashTableAlloc(nbatch * sizeof(RelativeAddr), hashtable);
 		innerbatchSizes = (int *)
 			absHashTableAlloc(nbatch * sizeof(int), hashtable);
 		for (i = 0; i < nbatch; i++)
 		{
-			tempname = hashTableAlloc(HJ_TEMP_NAMELEN, hashtable);
-			mk_hj_temp(ABSADDR(tempname));
-			innerbatchNames[i] = tempname;
 			innerbatchPos[i] = -1;
 			innerbatchSizes[i] = 0;
 		}
-		hashtable->innerbatchNames = RELADDR(innerbatchNames);
 		hashtable->innerbatchPos = RELADDR(innerbatchPos);
 		hashtable->innerbatchSizes = RELADDR(innerbatchSizes);
 	}
 	else
 	{
-		hashtable->outerbatchNames = (RelativeAddr) NULL;
 		hashtable->outerbatchPos = (RelativeAddr) NULL;
-		hashtable->innerbatchNames = (RelativeAddr) NULL;
 		hashtable->innerbatchPos = (RelativeAddr) NULL;
 		hashtable->innerbatchSizes = (RelativeAddr) NULL;
 	}
@@ -886,15 +857,6 @@ ExecHashTableReset(HashJoinTable hashtable, int ntuples)
 	hashtable->pcount = hashtable->nprocess;
 }
 
-static void
-mk_hj_temp(char *tempname)
-{
-	static int	hjtmpcnt = 0;
-
-	snprintf(tempname, HJ_TEMP_NAMELEN, "HJ%d.%d", (int) MyProcPid, hjtmpcnt);
-	hjtmpcnt = (hjtmpcnt + 1) % 1000;
-}
-
 void
 ExecReScanHash(Hash *node, ExprContext *exprCtxt, Plan *parent)
 {

src/backend/executor/nodeHashjoin.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/executor/nodeHashjoin.c,v 1.18 1999/05/06 00:30:47 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/executor/nodeHashjoin.c,v 1.19 1999/05/09 00:53:21 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -74,7 +74,6 @@ ExecHashJoin(HashJoin *node)
 	int			nbatch;
 	int			curbatch;
 	File	   *outerbatches;
-	RelativeAddr *outerbatchNames;
 	RelativeAddr *outerbatchPos;
 	Var		   *innerhashkey;
 	int			batch;
@@ -166,21 +165,10 @@ ExecHashJoin(HashJoin *node)
 		 */
 		innerhashkey = hashNode->hashkey;
 		hjstate->hj_InnerHashKey = innerhashkey;
-		outerbatchNames = (RelativeAddr *)
-			ABSADDR(hashtable->outerbatchNames);
-		outerbatches = (File *)
-			palloc(nbatch * sizeof(File));
+		outerbatches = (File *) palloc(nbatch * sizeof(File));
 		for (i = 0; i < nbatch; i++)
 		{
-#ifndef __CYGWIN32__
-			outerbatches[i] = FileNameOpenFile(
-							ABSADDR(outerbatchNames[i]),
-							O_CREAT | O_RDWR, 0600);
-#else
-			outerbatches[i] = FileNameOpenFile(
-							ABSADDR(outerbatchNames[i]),
-							O_CREAT | O_RDWR | O_BINARY, 0600);
-#endif
+			outerbatches[i] = OpenTemporaryFile();
 		}
 		hjstate->hj_OuterBatches = outerbatches;
 
@@ -193,7 +181,6 @@ ExecHashJoin(HashJoin *node)
 	}
 	outerbatchPos = (RelativeAddr *) ABSADDR(hashtable->outerbatchPos);
 	curbatch = hashtable->curbatch;
-	outerbatchNames = (RelativeAddr *) ABSADDR(hashtable->outerbatchNames);
 
 	/* ----------------
 	 *	Now get an outer tuple and probe into the hash table for matches