database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

Fix handling of SIGCHLD, per recent pghackers discussion: on some

Browse Source 
platforms system(2) gets confused unless the signal handler is set to
SIG_DFL, not SIG_IGN.  pgstats.c now uses pqsignal() as it should,
not signal().  Also, arrange for the stats collector process to show
a reasonable ID in 'ps', rather than looking like a postmaster.
This commit is contained in:
Tom Lane
2001-08-04 00:14:43 +00:00
parent 2b769c8212
commit dad8e410d0
6 changed files with 91 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/backend/tcop/postgres.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.229 2001/07/31 22:55:45 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.230 2001/08/04 00:14:43 tgl Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -1102,7 +1102,9 @@ usage(char *progname)
* ----------------------------------------------------------------
*/
int
PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[], const char *username)
PostgresMain(int argc, char *argv[],
int real_argc, char *real_argv[],
const char *username)
{
int flag;
@ -1535,15 +1537,15 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[], const cha
*/
pqsignal(SIGPIPE, SIG_IGN);
pqsignal(SIGUSR1, SIG_IGN); /* this signal available for use */
pqsignal(SIGUSR2, Async_NotifyHandler); /* flush also sinval cache */
pqsignal(SIGFPE, FloatExceptionHandler);
pqsignal(SIGCHLD, SIG_IGN); /* ignored (may get this in system()
* calls) */
/*
* Reset some signals that are accepted by postmaster but not by
* backend
*/
pqsignal(SIGCHLD, SIG_DFL); /* system() requires this on some platforms */
pqsignal(SIGTTIN, SIG_DFL);
pqsignal(SIGTTOU, SIG_DFL);
pqsignal(SIGCONT, SIG_DFL);
@ -1711,7 +1713,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[], const cha
if (!IsUnderPostmaster)
{
puts("\nPOSTGRES backend interactive interface ");
puts("$Revision: 1.229 $ $Date: 2001/07/31 22:55:45 $\n");
puts("$Revision: 1.230 $ $Date: 2001/08/04 00:14:43 $\n");
}
/*