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Running lo_read/lo_write under different memory context

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cause troubles. See
Message-Id: <199905090312.MAA00466@ext16.sra.co.jp>
for more details.
This commit is contained in:
Tatsuo Ishii 1999-05-09 15:00:18 +00:00
parent 202e523d10
commit 6458daa180
1 changed files with 17 additions and 3 deletions
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20
src/backend/libpq/be-fsstubs.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/libpq/be-fsstubs.c,v 1.30 1999/05/09 00:54:30 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/libpq/be-fsstubs.c,v 1.31 1999/05/09 15:00:18 ishii Exp $
*
* NOTES
* This should be moved to a more appropriate place. It is here
@ -131,6 +131,9 @@ lo_close(int fd)
int
lo_read(int fd, char *buf, int len)
{
MemoryContext currentContext;
int status;
if (fd < 0 || fd >= MAX_LOBJ_FDS)
{
elog(ERROR, "lo_read: large obj descriptor (%d) out of range", fd);
@ -141,13 +144,20 @@ lo_read(int fd, char *buf, int len)
elog(ERROR, "lo_read: invalid large obj descriptor (%d)", fd);
return -3;
}
currentContext = MemoryContextSwitchTo((MemoryContext) fscxt);
return inv_read(cookies[fd], buf, len);
status = inv_read(cookies[fd], buf, len);
MemoryContextSwitchTo(currentContext);
return(status);
}
int
lo_write(int fd, char *buf, int len)
{
MemoryContext currentContext;
int status;
if (fd < 0 || fd >= MAX_LOBJ_FDS)
{
elog(ERROR, "lo_write: large obj descriptor (%d) out of range", fd);
@ -158,8 +168,12 @@ lo_write(int fd, char *buf, int len)
elog(ERROR, "lo_write: invalid large obj descriptor (%d)", fd);
return -3;
}
currentContext = MemoryContextSwitchTo((MemoryContext) fscxt);
return inv_write(cookies[fd], buf, len);
status = inv_write(cookies[fd], buf, len);
MemoryContextSwitchTo(currentContext);
return(status);
}