1 /* This testcase is part of GDB, the GNU debugger.
3 Copyright 2002-2015 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 This file is copied from schedlock.c. */
25 void *thread_function (void *arg
); /* Function executed by each thread. */
29 unsigned int args
[NUM
+1];
35 pthread_t threads
[NUM
];
39 /* To keep the test determinative, initialize args first,
40 then start all the threads. Otherwise, the way watchthreads.exp
41 is written, we have to worry about things like threads[0] getting
42 to 29 hits of args[0] before args[1] gets changed. */
44 for (i
= 0; i
< NUM
; i
++)
46 /* The call to usleep is so that when the watchpoint triggers,
47 the pc is still on the same line. */
48 args
[i
] = 1; usleep (1); /* Init value. */
51 for (i
= 0; i
< NUM
; i
++)
53 res
= pthread_create (&threads
[i
],
60 thread_function ((void *) i
);
66 thread_function (void *arg
)
68 int my_number
= (long) arg
;
69 int *myp
= (int *) &args
[my_number
];
71 /* Don't run forever. Run just short of it :) */
74 (*myp
) ++; usleep (1); /* Loop increment. */
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