+/* PSPP - computes sample statistics.
+ Copyright (C) 2006 Free Software Foundation, Inc.
+ Written by John Darrington <john@darrington.wattle.id.au>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+#include <config.h>
+
+#include <errno.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+
+
+#include "debugger.h"
+
+/* Fork, start gdb and connect to the parent process.
+ If that happens successfully, then this function does not return,
+ but exits with EXIT_FAILURE. Otherwise it returns.
+ */
+
+void
+connect_debugger (void)
+{
+ char pidstr[20];
+ pid_t pid;
+
+ snprintf (pidstr, 20, "%d", getpid ());
+ pid = fork ();
+ if ( pid == -1 )
+ {
+ perror ("Cannot fork");
+ return ;
+ }
+ if ( pid == 0 )
+ {
+ /* child */
+ execlp ("gdb", "gdb", "-p", pidstr, NULL);
+ perror ("Cannot exec debugger");
+ exit (EXIT_FAILURE);
+ }
+ else
+ {
+ int status;
+ wait (&status);
+ if ( EXIT_SUCCESS != WEXITSTATUS (status) )
+ return ;
+ }
+
+ exit (EXIT_FAILURE);
+}
+