gdb/testsuite/gdb.mi/non-stop.c

   1 /* Test program for non-stop debugging.
   2    Copyright 1996, 2002, 2003, 2004, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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 3 of the License, or
  10    (at your option) any later version.
  11
  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.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <pthread.h>
  23
  24 /* Under OSF 2.0 & 3.0 and HPUX 10, the second arg of pthread_create
  25    is prototyped to be just a "pthread_attr_t", while under Solaris it
  26    is a "pthread_attr_t *".  Arg! */
  27
  28 #if defined (__osf__) || defined (__hpux__)
  29 #define PTHREAD_CREATE_ARG2(arg) arg
  30 #define PTHREAD_CREATE_NULL_ARG2 null_attr
  31 static pthread_attr_t null_attr;
  32 #else
  33 #define PTHREAD_CREATE_ARG2(arg) &arg
  34 #define PTHREAD_CREATE_NULL_ARG2 NULL
  35 #endif
  36
  37 int exit_first_thread = 0;
  38
  39 void break_at_me (int id, int i)
  40 {
  41 }
  42
  43 void *
  44 worker (void *arg)
  45 {
  46   int id = *(int *)arg;
  47   int i = 0;
  48
  49   /* When gdb is running, it sets hidden breakpoints in the thread
  50      library.  The signals caused by these hidden breakpoints can
  51      cause system calls such as 'sleep' to return early.  Pay attention
  52      to the return value from 'sleep' to get the full sleep.  */
  53   for (;;++i)
  54     {
  55       int unslept = 1;
  56       while (unslept > 0)
  57         unslept = sleep (unslept);
  58
  59       if (exit_first_thread && id == 0)
  60         return;
  61
  62       break_at_me (id, i);
  63     }
  64 }
  65
  66 pthread_t
  67 create_thread (int id)
  68 {
  69   pthread_t tid;
  70   /* This memory will be leaked, we don't care for a test.  */
  71   int *id2 = malloc (sizeof (int));
  72   *id2 = id;
  73
  74   if (pthread_create (&tid, PTHREAD_CREATE_NULL_ARG2, worker, (void *) id2))
  75     {
  76       perror ("pthread_create 1");
  77       exit (1);
  78     }
  79   return tid;
  80 }
  81
  82 int
  83 main (int argc, char *argv[])
  84 {
  85   pthread_t tid;
  86   create_thread (0);
  87   sleep (1);
  88   tid = create_thread (1);
  89   pthread_join (tid, NULL);
  90
  91   return 0;
  92 }
  93