--- /dev/null
+/*
+ * Copyright (c) 2005 Hewlett-Packard Development Company, L.P.
+ * Original Author: Hans Boehm
+ *
+ * This file may be redistributed and/or modified under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2, or (at your option) any later version.
+ *
+ * It is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License in the
+ * file doc/COPYING for more details.
+ */
+
+#if defined(HAVE_CONFIG_H)
+# include "config.h"
+#endif
+
+#include "run_parallel.inc"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "atomic_ops_malloc.h"
+
+#ifndef MAX_NTHREADS
+# define MAX_NTHREADS 100
+#endif
+
+#ifndef DEFAULT_NTHREADS
+# ifdef HAVE_MMAP
+# define DEFAULT_NTHREADS 10
+# else
+# define DEFAULT_NTHREADS 3
+# endif
+#endif
+
+#ifndef N_REVERSALS
+# define N_REVERSALS 1000 /* must be even */
+#endif
+
+#ifndef LIST_LENGTH
+# ifdef HAVE_MMAP
+# define LIST_LENGTH 1000
+# else
+# define LIST_LENGTH 100
+# endif
+#endif
+
+#ifndef LARGE_OBJ_SIZE
+# ifdef HAVE_MMAP
+# define LARGE_OBJ_SIZE 200000
+# else
+# define LARGE_OBJ_SIZE 20000
+# endif
+#endif
+
+#ifdef USE_STANDARD_MALLOC
+# define AO_malloc(n) malloc(n)
+# define AO_free(p) free(p)
+# define AO_malloc_enable_mmap()
+#endif
+
+typedef struct list_node {
+ struct list_node *next;
+ int data;
+} ln;
+
+ln *cons(int d, ln *tail)
+{
+ static size_t extra = 0;
+ size_t my_extra = extra;
+ ln *result;
+ int * extras;
+ int i;
+
+ if (my_extra > 100)
+ extra = my_extra = 0;
+ else
+ ++extra;
+ result = AO_malloc(sizeof(ln) + sizeof(int)*my_extra);
+ if (result == 0)
+ {
+ fprintf(stderr, "Out of memory\n");
+ /* Normal for more than about 10 threads without mmap? */
+ exit(2);
+ }
+
+ result -> data = d;
+ result -> next = tail;
+ extras = (int *)(result+1);
+ for (i = 0; i < my_extra; ++i) extras[i] = 42;
+ return result;
+}
+
+void print_list(ln *l)
+{
+ ln *p;
+
+ for (p = l; p != 0; p = p -> next)
+ {
+ fprintf(stderr, "%d, ", p -> data);
+ }
+ fprintf(stderr, "\n");
+}
+
+/* Check that l contains numbers from m to n inclusive in ascending order */
+void check_list(ln *l, int m, int n)
+{
+ ln *p;
+ int i;
+
+ for (p = l, i = m; p != 0; p = p -> next, ++i)
+ {
+ if (i != p -> data)
+ {
+ fprintf(stderr, "Found %d, expected %d\n", p -> data, i);
+ abort();
+ }
+ }
+}
+
+/* Create a list of integers from m to n */
+ln *
+make_list(int m, int n)
+{
+ if (m > n) return 0;
+ return cons(m, make_list(m+1, n));
+}
+
+/* Reverse list x, and concatenate it to y, deallocating no longer needed */
+/* nodes in x. */
+ln *
+reverse(ln *x, ln *y)
+{
+ ln * result;
+
+ if (x == 0) return y;
+ result = reverse(x -> next, cons(x -> data, y));
+ AO_free(x);
+ return result;
+}
+
+int dummy_test(void) { return 1; }
+
+void * run_one_test(void * arg) {
+ ln * x = make_list(1, LIST_LENGTH);
+ int i;
+ char *p = AO_malloc(LARGE_OBJ_SIZE);
+ char *q;
+
+ if (0 == p) {
+# ifdef HAVE_MMAP
+ fprintf(stderr, "AO_malloc(%d) failed\n", LARGE_OBJ_SIZE);
+# else
+ fprintf(stderr, "AO_malloc(%d) failed: This is normal without mmap\n",
+ LARGE_OBJ_SIZE);
+# endif
+ } else {
+ p[0] = p[LARGE_OBJ_SIZE/2] = p[LARGE_OBJ_SIZE-1] = 'a';
+ q = AO_malloc(LARGE_OBJ_SIZE);
+ if (q == 0)
+ {
+ fprintf(stderr, "Out of memory\n");
+ /* Normal for more than about 10 threads without mmap? */
+ exit(2);
+ }
+ q[0] = q[LARGE_OBJ_SIZE/2] = q[LARGE_OBJ_SIZE-1] = 'b';
+ if (p[0] != 'a' || p[LARGE_OBJ_SIZE/2] != 'a'
+ || p[LARGE_OBJ_SIZE-1] != 'a') {
+ fprintf(stderr, "First large allocation smashed\n");
+ abort();
+ }
+ AO_free(p);
+ if (q[0] != 'b' || q[LARGE_OBJ_SIZE/2] != 'b'
+ || q[LARGE_OBJ_SIZE-1] != 'b') {
+ fprintf(stderr, "Second large allocation smashed\n");
+ abort();
+ }
+ AO_free(q);
+ }
+# ifdef DEBUG_RUN_ONE_TEST
+ x = reverse(x, 0);
+ print_list(x);
+ x = reverse(x, 0);
+ print_list(x);
+# endif
+ for (i = 0; i < N_REVERSALS; ++i) {
+ x = reverse(x, 0);
+ }
+ check_list(x, 1, LIST_LENGTH);
+ return 0;
+}
+
+int main(int argc, char **argv) {
+ int nthreads;
+
+ if (1 == argc) {
+ nthreads = DEFAULT_NTHREADS;
+ } else if (2 == argc) {
+ nthreads = atoi(argv[1]);
+ if (nthreads < 1 || nthreads > MAX_NTHREADS) {
+ fprintf(stderr, "Invalid # of threads argument\n");
+ exit(1);
+ }
+ } else {
+ fprintf(stderr, "Usage: %s [# of threads]\n", argv[0]);
+ exit(1);
+ }
+ printf("Performing %d reversals of %d element lists in %d threads\n",
+ N_REVERSALS, LIST_LENGTH, nthreads);
+ AO_malloc_enable_mmap();
+ run_parallel(nthreads, run_one_test, dummy_test, "AO_malloc/AO_free");
+ return 0;
+}