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Removed un-needed signal suff from pginterface.

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This commit is contained in:
Bruce Momjian 1997-09-16 15:36:09 +00:00
parent 604ce32e46
commit f03b75e4a3
5 changed files with 0 additions and 57 deletions
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8
contrib/pginterface/README
View File

@ -22,14 +22,6 @@ useful if you are running the query engine on a system with a different
architecture than the database server. If you pass a NULL pointer, the
column is skipped, and you can use libpq to handle it as you wish.
I have used sigprocmask() to block the reception of certain signals
while the program is executing SQL queries. This prevents a user
pressing Control-C from stopping all the back ends. It blocks SIGHUP,
SIGINT, and SIGTERM, but does not block SIGQUIT or obviously kill -9.
If your platform does not support sigprocmask(), you can remove those
function calls. ( Am I correct that abnormal termination can cause
shared memory resynchronization?)
There is a demo program called pginsert that demonstrates how the
library can be used.

2
contrib/pginterface/pginsert.c
View File

@ -4,8 +4,6 @@
*/
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <libpq-fe.h>
#include "halt.h"
#include "pginterface.h"

43
contrib/pginterface/pginterface.c
View File

@ -4,7 +4,6 @@
*/
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <stdarg.h>
@ -12,9 +11,6 @@
#include "halt.h"
#include "pginterface.h"
static void sig_disconnect();
static void set_signals();
#define NUL '\0'
/* GLOBAL VARIABLES */
@ -27,8 +23,6 @@ static PGresult *res = NULL;
static int on_error_state = ON_ERROR_STOP;
/* LOCAL VARIABLES */
static sigset_t block_sigs,
unblock_sigs;
static int tuple;
/*
@ -48,7 +42,6 @@ connectdb(char *dbName,
if (PQstatus(conn) == CONNECTION_BAD)
halt("Connection to database '%s' failed.\n%s\n", dbName,
PQerrorMessage(conn));
set_signals();
return conn;
}
@ -74,9 +67,7 @@ doquery(char *query)
if (res != NULL)
PQclear(res);
sigprocmask(SIG_SETMASK, &block_sigs, NULL);
res = PQexec(conn, query);
sigprocmask(SIG_SETMASK, &unblock_sigs, NULL);
if (on_error_state == ON_ERROR_STOP &&
(res == NULL ||
@ -196,37 +187,3 @@ on_error_continue()
{
on_error_state = ON_ERROR_CONTINUE;
}
/*
**
** sig_disconnect
**
*/
static void
sig_disconnect()
{
fprintf(stderr, "exiting...\n");
PQfinish(conn);
exit(1);
}
/*
**
** set_signals
**
*/
static void
set_signals()
{
sigemptyset(&block_sigs);
sigemptyset(&unblock_sigs);
sigaddset(&block_sigs, SIGTERM);
sigaddset(&block_sigs, SIGHUP);
sigaddset(&block_sigs, SIGINT);
/* sigaddset(&block_sigs,SIGQUIT); no block */
sigprocmask(SIG_SETMASK, &unblock_sigs, NULL);
signal(SIGTERM, sig_disconnect);
signal(SIGHUP, sig_disconnect);
signal(SIGINT, sig_disconnect);
signal(SIGQUIT, sig_disconnect);
}

2
contrib/pginterface/pgnulltest.c
View File

@ -6,8 +6,6 @@
#define TEST_NON_NULLS
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <halt.h>
#include <libpq-fe.h>
#include <pginterface.h>

2
contrib/pginterface/pgwordcount.c
View File

@ -4,8 +4,6 @@
*/
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include "halt.h"
#include <libpq-fe.h>
#include "pginterface.h"