pthreads.c revision 1.3
1/* Pthreads test program. 2 Copyright 1996-2015 Free Software Foundation, Inc. 3 4 Written by Keith Seitz of Red Hat. 5 Copied from gdb.threads/pthreads.c. 6 Contributed by Red Hat. 7 8 This file is part of GDB. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 22 23#include <stdio.h> 24#include <stdlib.h> 25#include <pthread.h> 26 27/* Under HPUX 10, the second arg of pthread_create 28 is prototyped to be just a "pthread_attr_t", while under Solaris it 29 is a "pthread_attr_t *". Arg! */ 30 31#if defined (__hpux__) 32#define PTHREAD_CREATE_ARG2(arg) arg 33#define PTHREAD_CREATE_NULL_ARG2 null_attr 34static pthread_attr_t null_attr; 35#else 36#define PTHREAD_CREATE_ARG2(arg) &arg 37#define PTHREAD_CREATE_NULL_ARG2 NULL 38#endif 39 40void * 41routine (void *arg) 42{ 43 /* When gdb is running, it sets hidden breakpoints in the thread 44 library. The signals caused by these hidden breakpoints can 45 cause system calls such as 'sleep' to return early. Pay attention 46 to the return value from 'sleep' to get the full sleep. */ 47 int unslept = 9; 48 while (unslept > 0) 49 unslept = sleep (unslept); 50 51 printf ("hello thread\n"); 52} 53 54/* Marker function for the testsuite */ 55void 56done_making_threads (void) 57{ 58 /* Nothing */ 59} 60 61void 62create_thread (void) 63{ 64 pthread_t tid; 65 66 if (pthread_create (&tid, PTHREAD_CREATE_NULL_ARG2, routine, (void *) 0xfeedface)) 67 { 68 perror ("pthread_create 1"); 69 exit (1); 70 } 71} 72 73int 74main (int argc, char *argv[]) 75{ 76 int i; 77 78 /* Create a few threads */ 79 for (i = 0; i < 5; i++) 80 create_thread (); 81 done_making_threads (); 82 83 printf ("hello\n"); 84 printf ("hello\n"); 85 return 0; 86} 87 88