trace-mt.c revision 1.1.1.2 
1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2012-2014 Free Software Foundation, Inc.
4
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.
9
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.
14
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/>.  */
17
18#include <pthread.h>
19
20#ifdef SYMBOL_PREFIX
21#define SYMBOL(str)     SYMBOL_PREFIX #str
22#else
23#define SYMBOL(str)     #str
24#endif
25/* Called from asm.  */
26static void __attribute__((used))
27func (void)
28{}
29
30static void *
31thread_function(void *arg)
32{
33  /* `set_point1' is the label at which to set a fast tracepoint.  The
34     insn at the label must be large enough to fit a fast tracepoint
35     jump.  */
36  asm ("    .global " SYMBOL(set_point1) "\n"
37       SYMBOL(set_point1) ":\n"
38#if (defined __x86_64__ || defined __i386__)
39       "    call " SYMBOL(func) "\n"
40#endif
41       );
42}
43
44static void
45end (void)
46{}
47
48int
49main (int argc, char *argv[], char *envp[])
50{
51  pthread_t threads[2];
52  int i;
53
54  for (i = 0; i < 2; i++)
55    pthread_create (&threads[i], NULL, thread_function, NULL);
56
57  for (i = 0; i < 2; i++)
58    pthread_join (threads[i], NULL);
59
60  end ();
61
62  return 0;
63}
64