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67 tracing the child fork with no longer valid thread/lwp entries of the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
);
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