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Avoid assuming that type key_t is 32 bits, since it reportedly isn't

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on 64-bit Solaris.  Use a non-system-dependent datatype for UsedShmemSegID,
namely unsigned long (which we were already assuming could hold a shmem
key anyway, cf RecordSharedMemoryInLockFile).
This commit is contained in:
Tom Lane
2003-12-01 22:15:38 +00:00
parent 35ddc2edee
commit 5e2b99db95
6 changed files with 31 additions and 25 deletions
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19
src/backend/port/sysv_shmem.c
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@ -10,7 +10,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/port/sysv_shmem.c,v 1.26 2003/11/29 19:51:54 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/port/sysv_shmem.c,v 1.27 2003/12/01 22:15:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -34,12 +34,14 @@
#include "storage/ipc.h"
#include "storage/pg_shmem.h"
typedef key_t IpcMemoryKey; /* shared memory key passed to shmget(2) */
typedef int IpcMemoryId; /* shared memory ID returned by shmget(2) */
#define IPCProtection (0600) /* access/modify by user only */
IpcMemoryKey UsedShmemSegID = 0;
unsigned long UsedShmemSegID = 0;
void *UsedShmemSegAddr = NULL;
static void *InternalIpcMemoryCreate(IpcMemoryKey memKey, uint32 size);
@ -90,8 +92,8 @@ InternalIpcMemoryCreate(IpcMemoryKey memKey, uint32 size)
*/
ereport(FATAL,
(errmsg("could not create shared memory segment: %m"),
errdetail("Failed system call was shmget(key=%d, size=%u, 0%o).",
(int) memKey, size,
errdetail("Failed system call was shmget(key=%lu, size=%u, 0%o).",
(unsigned long) memKey, size,
IPC_CREAT | IPC_EXCL | IPCProtection),
(errno == EINVAL) ?
errhint("This error usually means that PostgreSQL's request for a shared memory "
@ -247,9 +249,10 @@ PGSharedMemoryCreate(uint32 size, bool makePrivate, int port)
/* If Exec case, just attach and return the pointer */
if (ExecBackend && UsedShmemSegAddr != NULL && !makePrivate)
{
if ((hdr = PGSharedMemoryAttach(UsedShmemSegID, &shmid)) == NULL)
elog(FATAL, "could not attach to proper memory at fixed address: shmget(key=%d, addr=%p) failed: %m",
(int) UsedShmemSegID, UsedShmemSegAddr);
hdr = PGSharedMemoryAttach((IpcMemoryKey) UsedShmemSegID, &shmid);
if (hdr == NULL)
elog(FATAL, "could not attach to proper memory at fixed address: shmget(key=%lu, addr=%p) failed: %m",
UsedShmemSegID, UsedShmemSegAddr);
return hdr;
}
@ -331,7 +334,7 @@ PGSharedMemoryCreate(uint32 size, bool makePrivate, int port)
/* Save info for possible future use */
UsedShmemSegAddr = memAddress;
UsedShmemSegID = NextShmemSegID;
UsedShmemSegID = (unsigned long) NextShmemSegID;
return hdr;
}