1 /* Test case for forgotten hw-watchpoints after fork()-off of a process.
3 Copyright 2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
29 #include "watchpoint-fork.h"
31 /* `pid_t' may not be available. */
33 static volatile int usr1_got;
36 handler_usr1 (int signo)
44 int child, save_parent = getpid ();
46 struct sigaction act, oldact;
51 memset (&act, 0, sizeof act);
52 act.sa_flags = SA_RESTART;
53 act.sa_handler = handler_usr1;
54 sigemptyset (&act.sa_mask);
55 i = sigaction (SIGUSR1, &act, &oldact);
64 printf ("parent%d: %d\n", nr, (int) child);
66 /* Sleep for a while to possibly get incorrectly ATTACH_THREADed by GDB
67 tracing the child fork with no longer valid thread/lwp entries of the
73 /* We must not get caught here (against a forgotten breakpoint). */
79 /* And neither got caught our thread. */
82 i = pthread_join (thread, &thread_result);
84 assert (thread_result == (void *) 99UL);
87 /* Be sure our child knows we did not get caught above. */
89 i = kill (child, SIGUSR1);
92 /* Sleep for a while to check GDB's `info threads' no longer tracks us in
100 printf ("child%d: %d\n", nr, (int) getpid ());
102 /* Let the parent signal us about its success. Be careful of races. */
106 /* Parent either died (and USR1_GOT is zero) or it succeeded. */
107 if (getppid () != save_parent)
109 if (kill (getppid (), 0) != 0)
111 /* Parent succeeded? */
116 i = pthread_yield ();
122 /* We must get caught here (against a false watchpoint removal). */
127 i = sigaction (SIGUSR1, &oldact, NULL);