Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commitd9fd7d1

Browse files
committed
Pass shared memory id and socket descriptor number on command line for
fork/exec.
1 parente8f4f2f commitd9fd7d1

File tree

6 files changed

+83
-21
lines changed

6 files changed

+83
-21
lines changed

‎src/backend/bootstrap/bootstrap.c‎

Lines changed: 21 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.154 2003/05/0605:15:45 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.155 2003/05/0623:34:55 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -36,6 +36,7 @@
3636
#include"miscadmin.h"
3737
#include"storage/freespace.h"
3838
#include"storage/ipc.h"
39+
#include"storage/pg_shmem.h"
3940
#include"storage/proc.h"
4041
#include"tcop/tcopprot.h"
4142
#include"utils/builtins.h"
@@ -252,7 +253,7 @@ BootstrapMain(int argc, char *argv[])
252253
* variable */
253254
}
254255

255-
while ((flag=getopt(argc,argv,"B:d:D:Fo:px:"))!=-1)
256+
while ((flag=getopt(argc,argv,"B:d:D:Fo:p:x:"))!=-1)
256257
{
257258
switch (flag)
258259
{
@@ -283,23 +284,36 @@ BootstrapMain(int argc, char *argv[])
283284
xlogop=atoi(optarg);
284285
break;
285286
case'p':
287+
{
286288
/* indicates fork from postmaster */
289+
char*p;
290+
#ifdefEXEC_BACKEND
291+
sscanf(optarg,"%d,",&UsedShmemSegID);
292+
p=strchr(optarg,',');
293+
if (p)
294+
dbname=strdup(p+1);
295+
#else
296+
dbname=strdup(optarg);
297+
#endif
287298
break;
299+
}
288300
case'B':
289301
SetConfigOption("shared_buffers",optarg,PGC_POSTMASTER,PGC_S_ARGV);
290302
break;
291303
default:
292304
usage();
293305
break;
294306
}
295-
}/* while */
307+
}
296308

297-
if (argc-optind!=1)
309+
if (!dbname&&argc-optind==1)
310+
{
311+
dbname=argv[optind];
312+
optind++;
313+
}
314+
if (!dbname||argc!=optind)
298315
usage();
299316

300-
dbname=argv[optind];
301-
302-
Assert(dbname);
303317

304318
if (IsUnderPostmaster&&ExecBackend&&MyProc/* ordinary backend */)
305319
{

‎src/backend/port/sysv_shmem.c‎

Lines changed: 17 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
1010
* Portions Copyright (c) 1994, Regents of the University of California
1111
*
1212
* IDENTIFICATION
13-
* $Header: /cvsroot/pgsql/src/backend/port/sysv_shmem.c,v 1.7 2003/04/24 21:24:36 momjian Exp $
13+
* $Header: /cvsroot/pgsql/src/backend/port/sysv_shmem.c,v 1.8 2003/05/06 23:34:55 momjian Exp $
1414
*
1515
*-------------------------------------------------------------------------
1616
*/
@@ -34,13 +34,15 @@
3434
#include"storage/ipc.h"
3535
#include"storage/pg_shmem.h"
3636

37-
38-
typedefuint32IpcMemoryKey;/* shared memory key passed to shmget(2) */
3937
typedefintIpcMemoryId;/* shared memory ID returned by shmget(2) */
4038

4139
#defineIPCProtection(0600)/* access/modify by user only */
4240

4341

42+
#ifdefEXEC_BACKEND
43+
IpcMemoryKeyUsedShmemSegID=0;
44+
#endif
45+
4446
staticvoid*InternalIpcMemoryCreate(IpcMemoryKeymemKey,uint32size);
4547
staticvoidIpcMemoryDetach(intstatus,Datumshmaddr);
4648
staticvoidIpcMemoryDelete(intstatus,DatumshmId);
@@ -300,10 +302,14 @@ PGSharedMemoryCreate(uint32 size, bool makePrivate, int port)
300302
/* Room for a header? */
301303
Assert(size>MAXALIGN(sizeof(PGShmemHeader)));
302304

303-
/* Loop till we find a free IPC key */
304-
NextShmemSegID=port*1000;
305+
#ifdefEXEC_BACKEND
306+
if (UsedShmemSegID!=0)
307+
NextShmemSegID=UsedShmemSegID;
308+
else
309+
#endif
310+
NextShmemSegID=port*1000+1;
305311

306-
for (NextShmemSegID++;;NextShmemSegID++)
312+
for (;;NextShmemSegID++)
307313
{
308314
IpcMemoryIdshmid;
309315

@@ -395,5 +401,10 @@ PGSharedMemoryCreate(uint32 size, bool makePrivate, int port)
395401
hdr->totalsize=size;
396402
hdr->freeoffset=MAXALIGN(sizeof(PGShmemHeader));
397403

404+
#ifdefEXEC_BACKEND
405+
if (!makePrivate&&UsedShmemSegID==0)
406+
UsedShmemSegID=NextShmemSegID;
407+
#endif
408+
398409
returnhdr;
399410
}

‎src/backend/postmaster/postmaster.c‎

Lines changed: 22 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -37,7 +37,7 @@
3737
*
3838
*
3939
* IDENTIFICATION
40-
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.321 2003/05/03 05:13:18 momjian Exp $
40+
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.322 2003/05/06 23:34:55 momjian Exp $
4141
*
4242
* NOTES
4343
*
@@ -97,6 +97,7 @@
9797
#include"nodes/nodes.h"
9898
#include"storage/fd.h"
9999
#include"storage/ipc.h"
100+
#include"storage/pg_shmem.h"
100101
#include"storage/pmsignal.h"
101102
#include"storage/proc.h"
102103
#include"access/xlog.h"
@@ -2214,6 +2215,9 @@ BackendFinalize(Port *port)
22142215
intac;
22152216
chardebugbuf[32];
22162217
charprotobuf[32];
2218+
#ifdefEXEC_BACKEND
2219+
charpbuf[NAMEDATALEN+256];
2220+
#endif
22172221
inti;
22182222
intstatus;
22192223
structtimevalnow;
@@ -2434,8 +2438,14 @@ BackendFinalize(Port *port)
24342438
* database to use. -p marks the end of secure switches.
24352439
*/
24362440
av[ac++]="-p";
2441+
#ifdefEXEC_BACKEND
2442+
Assert(UsedShmemSegID!=0);
2443+
/* database name at the end because it might contain commas */
2444+
snprintf(pbuf,NAMEDATALEN+256,"%d,%d,%s",port->sock,UsedShmemSegID,port->database_name);
2445+
av[ac++]=pbuf;
2446+
#else
24372447
av[ac++]=port->database_name;
2438-
2448+
#endif
24392449
/*
24402450
* Pass the (insecure) option switches from the connection request.
24412451
* (It's OK to mangle port->cmdline_options now.)
@@ -2712,6 +2722,9 @@ SSDataBase(int xlop)
27122722
intac=0;
27132723
charnbbuf[32];
27142724
charxlbuf[32];
2725+
#ifdefEXEC_BACKEND
2726+
charpbuf[NAMEDATALEN+256];
2727+
#endif
27152728

27162729
#ifdefLINUX_PROFILE
27172730
setitimer(ITIMER_PROF,&prof_itimer,NULL);
@@ -2762,7 +2775,14 @@ SSDataBase(int xlop)
27622775
av[ac++]=xlbuf;
27632776

27642777
av[ac++]="-p";
2778+
#ifdefEXEC_BACKEND
2779+
Assert(UsedShmemSegID!=0);
2780+
/* database name at the end because it might contain commas */
2781+
snprintf(pbuf,NAMEDATALEN+256,"%d,%s",UsedShmemSegID,"template1");
2782+
av[ac++]=pbuf;
2783+
#else
27652784
av[ac++]="template1";
2785+
#endif
27662786

27672787
av[ac]= (char*)NULL;
27682788

‎src/backend/storage/ipc/shmem.c‎

Lines changed: 2 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/shmem.c,v 1.67 2002/09/04 20:31:25 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/shmem.c,v 1.68 2003/05/06 23:34:55 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -365,8 +365,7 @@ ShmemInitStruct(const char *name, Size size, bool *foundPtr)
365365
hash_search(ShmemIndex, (void*)&item,HASH_REMOVE,NULL);
366366
LWLockRelease(ShmemIndexLock);
367367

368-
elog(WARNING,"ShmemInitStruct: cannot allocate '%s'",
369-
name);
368+
elog(WARNING,"ShmemInitStruct: cannot allocate '%s'",name);
370369
*foundPtr= FALSE;
371370
returnNULL;
372371
}

‎src/backend/tcop/postgres.c‎

Lines changed: 14 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.337 2003/05/0621:51:41 tgl Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.338 2003/05/0623:34:55 momjian Exp $
1212
*
1313
* NOTES
1414
* this is the "main" module of the postgres backend and
@@ -51,6 +51,7 @@
5151
#include"rewrite/rewriteHandler.h"
5252
#include"storage/freespace.h"
5353
#include"storage/ipc.h"
54+
#include"storage/pg_shmem.h"
5455
#include"storage/proc.h"
5556
#include"tcop/fastpath.h"
5657
#include"tcop/pquery.h"
@@ -2024,7 +2025,18 @@ PostgresMain(int argc, char *argv[], const char *username)
20242025
*/
20252026
if (secure)
20262027
{
2028+
char*p;
2029+
#ifdefEXEC_BACKEND
2030+
sscanf(optarg,"%d,%d,",&MyProcPort->sock,&UsedShmemSegID);
2031+
/* Grab dbname as last param */
2032+
p=strchr(optarg,',');
2033+
if (p)
2034+
p=strchr(p+1,',');
2035+
if (p)
2036+
dbname=strdup(p+1);
2037+
#else
20272038
dbname=strdup(optarg);
2039+
#endif
20282040
secure= false;/* subsequent switches are NOT
20292041
* secure */
20302042
ctx=PGC_BACKEND;
@@ -2381,7 +2393,7 @@ PostgresMain(int argc, char *argv[], const char *username)
23812393
if (!IsUnderPostmaster)
23822394
{
23832395
puts("\nPOSTGRES backend interactive interface ");
2384-
puts("$Revision: 1.337 $ $Date: 2003/05/0621:51:41 $\n");
2396+
puts("$Revision: 1.338 $ $Date: 2003/05/0623:34:55 $\n");
23852397
}
23862398

23872399
/*

‎src/include/storage/pg_shmem.h‎

Lines changed: 7 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -17,13 +17,15 @@
1717
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
1818
* Portions Copyright (c) 1994, Regents of the University of California
1919
*
20-
* $Id: pg_shmem.h,v 1.4 2002/09/04 20:31:45 momjian Exp $
20+
* $Id: pg_shmem.h,v 1.5 2003/05/06 23:34:56 momjian Exp $
2121
*
2222
*-------------------------------------------------------------------------
2323
*/
2424
#ifndefPG_SHMEM_H
2525
#definePG_SHMEM_H
2626

27+
typedefuint32IpcMemoryKey;/* shared memory key passed to shmget(2) */
28+
2729
typedefstructPGShmemHeader/* standard header for all Postgres shmem */
2830
{
2931
int32magic;/* magic # to identify Postgres segments */
@@ -34,6 +36,10 @@ typedef struct PGShmemHeader/* standard header for all Postgres shmem */
3436
}PGShmemHeader;
3537

3638

39+
#ifdefEXEC_BACKEND
40+
externIpcMemoryKeyUsedShmemSegID;
41+
#endif
42+
3743
externPGShmemHeader*PGSharedMemoryCreate(uint32size,boolmakePrivate,
3844
intport);
3945
externboolPGSharedMemoryIsInUse(unsigned longid1,unsigned longid2);

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp