Submitted By: BLFS Book <blfs-book at linuxfromscratch dot org>
Date: 2004-02-01
Initial Package Version: 4.6
Origin: http://www.ghostscript.com/
Description: Fixes text extracting.

$LastChangedBy: djensen $
$Date: 2005-06-21 09:17:17 -0500 (Tue, 21 Jun 2005) $

--- gsview-4.6/srcunx/gvxdll.c.orig	2004-02-02 00:29:53.000000000 +0000
+++ gsview-4.6/srcunx/gvxdll.c	2004-02-02 00:30:05.000000000 +0000
@@ -410,13 +410,13 @@
 
 int pstotext_pid = 0;
 
-gint check_pstotext(gpointer data)
+static void pstotext_sighandler(int num)
 {
     int rc = 0;
     int status = 0;
 
     if (pstotext_pid == 0)
-	return FALSE;	/* pstotext not running, remove timer */
+	return; 	/* pstotext not running */
 
     /* check if pstotext has exited */
     if ( (rc = waitpid(pstotext_pid, &status, WNOHANG)) > 0 ) {
@@ -450,9 +450,10 @@
 	    unlink(psfile.text_name);
 	    psfile.text_name[0] = '\0';
 	}
-	return FALSE;	/* remove timer */
+	return;
     }
-    return TRUE;	/* keep checking */
+    if (rc)
+	perror("pstotext_sighandler: waitpid error, ");
 }
 
 /* start pstotext and wait for it to terminate */
@@ -547,6 +548,8 @@
     }
 
     pstotext_pid = fork();
+
+    signal(SIGCHLD, pstotext_sighandler);
     if (pstotext_pid == 0) {
 	/* replace child process with prog */
 	if (execvp(nargv[0], nargv) == -1) {
@@ -558,8 +561,7 @@
     }
     else {
 	/* parent */
-	/* Check every second if pstotext has finished */
-	gtk_timeout_add(1000, check_pstotext, (gpointer)((size_t)pstotext_pid));
+	/* pstotext_sighandler will tell us when it finishes */
     } 
     return 0;	/* all is well */
 }