/**
 * $Id: memtest.c 28254 2010-04-18 10:28:37Z campbellbarton $
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/**

 * $Id: memtest.c 28254 2010-04-18 10:28:37Z campbellbarton $
 * Copyright (C) 2001 NaN Technologies B.V.
 * Simple test of memory.
 */



/* Number of chunks to test with */
#define NUM_BLOCKS 10

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "MEM_guardedalloc.h"

static void mem_error_cb(const char *errorStr)
{
	fprintf(stderr, "%s", errorStr);
	fflush(stderr);
}

int main (int argc, char *argv[])
{
	int verbose       = 0;
	int error_status  = 0;
	int retval        = 0;
	int *ip;

	void *p[NUM_BLOCKS];
	int i = 0;

	/* ----------------------------------------------------------------- */
   	switch (argc) {
	case 2:		
		verbose = atoi(argv[1]);
		if (verbose < 0) verbose = 0;
		break;		
	case 1:
	default:
		verbose = 0;
	}
	if (verbose) {
		fprintf(stderr,"\n*** Simple memory test\n|\n");
	}

	/* ----------------------------------------------------------------- */
	/* Round one, do a normal allocation, and free the blocks again.     */
	/* ----------------------------------------------------------------- */
	/* flush mem lib output to stderr */
	MEM_set_error_callback(mem_error_cb);
	
	for (i = 0; i < NUM_BLOCKS; i++) {
		int blocksize = 10000;
		char tagstring[1000];
		if (verbose >1) printf("|--* Allocating block %d\n", i);
		sprintf(tagstring,"Memblock no. %d : ", i);
		p[i]= MEM_callocN(blocksize, strdup(tagstring));
	}

	/* report on that */
	if (verbose > 1) MEM_printmemlist();

	/* memory is there: test it */
	error_status = MEM_check_memory_integrity();

	if (verbose) {
		if (error_status) {
			fprintf(stderr, "|--* Memory test FAILED\n|\n");
		} else {
			fprintf(stderr, "|--* Memory tested as good (as it should be)\n|\n");
		}
	} 

	for (i = 0; i < NUM_BLOCKS; i++) {
		MEM_freeN(p[i]);
	}

	/* ----------------------------------------------------------------- */
	/* Round two, do a normal allocation, and corrupt some blocks.       */
	/* ----------------------------------------------------------------- */
	/* switch off, because it will complain about some things.           */
	MEM_set_error_callback(NULL);

	for (i = 0; i < NUM_BLOCKS; i++) {
		int blocksize = 10000;
		char tagstring[1000];
		if (verbose >1) printf("|--* Allocating block %d\n", i);
		sprintf(tagstring,"Memblock no. %d : ", i);
		p[i]= MEM_callocN(blocksize, strdup(tagstring));
	}

	/* now corrupt a few blocks...*/
	ip = (int*) p[5] - 50 ;
	for (i = 0; i< 1000; i++,ip++) *ip = i+1;
	ip = (int*) p[6];
	*(ip+10005) = 0;
	
	retval = MEM_check_memory_integrity();

	/* the test should have failed */
	error_status |= !retval;		
	if (verbose) {
		if (retval) {
			fprintf(stderr, "|--* Memory test failed (as it should be)\n");
		} else {
			fprintf(stderr, "|--* Memory test FAILED to find corrupted blocks \n");
		}
	} 
	
	for (i = 0; i < NUM_BLOCKS; i++) {
		MEM_freeN(p[i]);
	}


	if (verbose && error_status) {
		fprintf(stderr,"|--* Memory was corrupted\n");
	}
	/* ----------------------------------------------------------------- */	
	if (verbose) {
		if (error_status) {
			fprintf(stderr,"|\n|--* Errors were detected\n");
		} else {
			fprintf(stderr,"|\n|--* Test exited succesfully\n");
		}
		
		fprintf(stderr,"|\n*** Finished test\n\n");
	}
	return error_status;
}