memtest1.c

#include "param.h"
#include "types.h"
#include "stat.h"
#include "user.h"
#include "fs.h"
#include "fcntl.h"
#include "syscall.h"
#include "traps.h"
#include "memlayout.h"

char buf[8192];
char name[3];
char *echoargv[] = { "echo", "ALL", "TESTS", "PASSED", 0 };
int stdout = 1;
#define TOTAL_MEMORY (2 << 20) + (1 << 18) + (1 << 17)

void
mem(void)
{
	void *m1 = 0, *m2, *start;
	uint cur = 0;
	uint count = 0;
	uint total_count;

	printf(1, "mem test\n");

	m1 = malloc(4096);
	if (m1 == 0)
		goto failed;
	start = m1;

	while (cur < TOTAL_MEMORY) {
		m2 = malloc(4096);
		if (m2 == 0)
			goto failed;
		*(char**)m1 = m2;
		((int*)m1)[2] = count++;
		printf(1, "CurrCount: %d\n", ((int*)m1)[2]);
		m1 = m2;
		cur += 4096;
	}

	((int*)m1)[2] = count;
	total_count = count;
	printf(1, "\n\nWhile Loop Over\n");

	count = 0;
	m1 = start;

	while (count != total_count) {
		if (((int*)m1)[2] != count)
		{
			printf(1, "CurrCount: %d\n", count);
			goto failed;
		}
		m1 = *(char**)m1;
		count++;
	}

	printf(1, "mem ok %d\n", bstat());
	exit();
failed:
	printf(1, "test failed!\n");
	exit();
}

int
main(int argc, char *argv[])
{
	printf(1, "memtest starting\n");
	mem();
	return 0;
}