1 /* This testcase is part of GDB, the GNU debugger.
3 Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 This file is copied from schedlock.c. */
26 void *thread_function (void *arg
); /* Function executed by each thread. */
30 unsigned int args
[NUM
+1];
36 pthread_t threads
[NUM
];
40 /* To keep the test determinative, initialize args first,
41 then start all the threads. Otherwise, the way watchthreads.exp
42 is written, we have to worry about things like threads[0] getting
43 to 29 hits of args[0] before args[1] gets changed. */
45 for (i
= 0; i
< NUM
; i
++)
47 /* The call to usleep is so that when the watchpoint triggers,
48 the pc is still on the same line. */
49 args
[i
] = 1; usleep (1); /* Init value. */
52 for (i
= 0; i
< NUM
; i
++)
54 res
= pthread_create (&threads
[i
],
61 thread_function ((void *) i
);
67 thread_function (void *arg
)
69 int my_number
= (long) arg
;
70 int *myp
= (int *) &args
[my_number
];
72 /* Don't run forever. Run just short of it :) */
75 (*myp
) ++; usleep (1); /* Loop increment. */
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