usr/src/lib/libmtmalloc/tests/general.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1998-2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <thread.h>
  33
  34 /*
  35  * This file contains a general health check for the libmtmalloc.so.1 lib.
  36  * It creates NCPUS worth of threads and has eadch perform 1000000 random
  37  * small allocs and then free them.
  38  *
  39  * cc -O -o general general.c -lmtmalloc
  40  */
  41 #define N       1000000
  42
  43 void *be_thread(void *);
  44
  45 main(int argc, char ** argv)
  46 {
  47         int i;
  48         thread_t tid[512];      /* We'll never have more than that! hah */
  49
  50         i = sysconf(_SC_NPROCESSORS_CONF);
  51         srand(getpid());
  52
  53         while (i)
  54                 thr_create(NULL, 1<<23, be_thread, NULL, THR_BOUND, &tid[i--]);
  55
  56         while (thr_join(NULL, NULL, NULL) == 0);
  57
  58         exit(0);
  59 }
  60
  61 /* ARGSUSED */
  62 void *
  63 be_thread(void * foo)
  64 {
  65         int i = N;
  66         char *bar[N];
  67
  68         while (i--)
  69                 bar[i] = malloc(rand()%64);
  70
  71         i = N;
  72         while (i--)
  73                 free(bar[i]);
  74 }