freebsd-dev/lib/libpthread/test/join_leak_d.c

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2001-05-20 23:12:13 +00:00
/*
* Copyright (C) 2001 Jason Evans <jasone@freebsd.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice(s), this list of conditions and the following disclaimer as
* the first lines of this file unmodified other than the possible
* addition of one or more copyright notices.
* 2. Redistributions in binary form must reproduce the above copyright
* notice(s), this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*
* Test for leaked joined threads.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <pthread.h>
#define NITERATIONS 16384
#define MAXGROWTH 16384
void *
thread_entry(void *a_arg)
{
return NULL;
}
int
main(void)
{
pthread_t thread;
int i, error;
char *brk, *nbrk;
unsigned growth;
fprintf(stderr, "Test begin\n");
/* Get an initial brk value. */
brk = sbrk(0);
/* Create threads and join them, one at a time. */
for (i = 0; i < NITERATIONS; i++) {
if ((error = pthread_create(&thread, NULL, thread_entry, NULL))
!= 0) {
fprintf(stderr, "Error in pthread_create(): %s\n",
strerror(error));
exit(1);
}
if ((error = pthread_join(thread, NULL)) != 0) {
fprintf(stderr, "Error in pthread_join(): %s\n",
strerror(error));
exit(1);
}
}
/* Get a final brk value. */
nbrk = sbrk(0);
/*
* Check that the amount of heap space allocated is below an acceptable
* threshold. We could just compare brk and nbrk, but the test could
* conceivably break if the internals of the threads library changes.
*/
if (nbrk > brk) {
/* Heap grows up. */
growth = nbrk - brk;
} else if (nbrk <= brk) {
/* Heap grows down, or no growth. */
growth = brk - nbrk;
}
if (growth > MAXGROWTH) {
fprintf(stderr, "Heap growth exceeded maximum (%u > %u)\n",
growth, MAXGROWTH);
}
#if (0)
else {
fprintf(stderr, "Heap growth acceptable (%u <= %u)\n",
growth, MAXGROWTH);
}
#endif
fprintf(stderr, "Test end\n");
return 0;
}