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/*
* Copyright (c) 2010 Richard Braun.
* 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, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, 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 AUTHOR ``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 AUTHOR 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.
*/
#define _GNU_SOURCE
#include <sched.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include "../mem.h"
#include "../macros.h"
struct obj {
unsigned long nr_refs;
char name[16];
};
static void
obj_ctor(void *ptr)
{
struct obj *obj;
obj = ptr;
obj->nr_refs = 0;
}
static void
obj_print(struct obj *obj)
{
unsigned char *ptr, *end;
printf("buffer content: ");
for (ptr = (unsigned char *)obj, end = ptr + sizeof(*obj);
ptr < end;
ptr++)
printf("%02x", *ptr);
printf("\n");
}
int
main(int argc, char *argv[])
{
struct mem_cache *obj_cache;
struct obj *obj;
cpu_set_t cpu_set;
(void)argc;
(void)argv;
printf("binding to CPU 0\n");
CPU_ZERO(&cpu_set);
CPU_SET(0, &cpu_set);
sched_setaffinity(0, sizeof(cpu_set), &cpu_set);
mem_setup();
obj_cache = mem_cache_create("obj", sizeof(struct obj), 0,
obj_ctor, NULL, MEM_CACHE_VERIFY);
printf("doing normal alloc+free:\n");
obj = mem_cache_alloc(obj_cache);
mem_cache_free(obj_cache, obj);
mem_cache_info(obj_cache);
obj_print(obj);
printf("doing write on free object:\n");
memset((void *)obj + 3, 0x89, 5);
obj_print(obj);
printf("trying normal alloc+free on same CPU (should fail):\n");
obj = mem_cache_alloc(obj_cache);
mem_cache_free(obj_cache, obj);
printf("done\n");
return 0;
}
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