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113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* Test of POSIX compatible dprintf() function.
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Copyright (C) 2009-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2009. */
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#if HAVE_GETRLIMIT && HAVE_SETRLIMIT
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# include <sys/types.h>
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# include <sys/time.h>
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# include <sys/resource.h>
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#endif
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#include "resource-ext.h"
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/* Test against a memory leak in the fprintf replacement. */
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/* Number of iterations across the loop. */
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#define NUM_ROUNDS 1000
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/* Number of bytes that are allowed to escape per round. */
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#define MAX_ALLOC_ROUND 10000
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/* Number of bytes that are allowed to escape in total.
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This should be at least 10 MB, since it includes the normal memory
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or address space of the test program. */
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#define MAX_ALLOC_TOTAL (NUM_ROUNDS * MAX_ALLOC_ROUND)
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int
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main (int argc, char *argv[])
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{
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uintptr_t initial_rusage_as;
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int arg;
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int result;
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/* Limit the amount of malloc()ed memory to MAX_ALLOC_TOTAL or less. */
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/* On AIX systems, malloc() is limited by RLIMIT_DATA. */
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#if HAVE_GETRLIMIT && HAVE_SETRLIMIT && defined RLIMIT_DATA
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{
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struct rlimit limit;
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if (getrlimit (RLIMIT_DATA, &limit) >= 0)
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{
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if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > MAX_ALLOC_TOTAL)
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limit.rlim_max = MAX_ALLOC_TOTAL;
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limit.rlim_cur = limit.rlim_max;
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(void) setrlimit (RLIMIT_DATA, &limit);
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}
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}
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#endif
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/* On all systems except AIX and OpenBSD, malloc() is limited by RLIMIT_AS.
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On some systems, setrlimit of RLIMIT_AS doesn't work but get_rusage_as ()
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does. Allow the address space size to grow by at most MAX_ALLOC_TOTAL. */
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initial_rusage_as = get_rusage_as ();
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#if !defined _AIX
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if (initial_rusage_as == 0)
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return 77;
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#endif
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arg = atoi (argv[1]);
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if (arg == 0)
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{
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void *memory = malloc (MAX_ALLOC_TOTAL);
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if (memory == NULL)
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return 1;
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memset (memory, 17, MAX_ALLOC_TOTAL);
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result = 78;
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}
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else
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{
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/* Perform the test and test whether it triggers a permanent memory
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allocation of more than MAX_ALLOC_TOTAL bytes. */
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int repeat;
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for (repeat = 0; repeat < NUM_ROUNDS; repeat++)
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{
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/* This may produce a temporary memory allocation of 11000 bytes.
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but should not result in a permanent memory allocation. */
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if (dprintf (STDOUT_FILENO, "%011000d\n", 17) == -1
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&& errno == ENOMEM)
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return 1;
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}
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result = 0;
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}
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if (get_rusage_as () > initial_rusage_as + MAX_ALLOC_TOTAL)
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return 1;
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return result;
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}
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