minix/test/test6.c

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/* test 6 */
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
int max_error = 3;
#include "common.h"
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int subtest = 1;
int zilch[5000];
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int main(int argc, char *argv []);
void test6a(void);
void test6b(void);
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int main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0xFFFF;
if (argc == 2) m = atoi(argv[1]);
start(6);
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for (i = 0; i < 70; i++) {
if (m & 00001) test6a();
if (m & 00002) test6b();
}
quit();
return(-1); /* impossible */
}
void test6a()
{
/* Test sbrk() and brk(). */
char *addr, *addr2, *addr3;
int i, del, click, click2;
subtest = 1;
addr = sbrk(0);
addr = sbrk(0); /* force break to a click boundary */
for (i = 0; i < 10; i++) sbrk(7 * i);
for (i = 0; i < 10; i++) sbrk(-7 * i);
if (sbrk(0) != addr) e(1);
sbrk(30);
if (brk(addr) != 0) e(2);
if (sbrk(0) != addr) e(3);
del = 0;
do {
del++;
brk(addr + del);
addr2 = sbrk(0);
} while (addr2 == addr);
click = addr2 - addr;
sbrk(-1);
if (sbrk(0) != addr) e(4);
brk(addr);
if (sbrk(0) != addr) e(5);
del = 0;
do {
del++;
brk(addr - del);
addr3 = sbrk(0);
} while (addr3 == addr);
click2 = addr - addr3;
sbrk(1);
if (sbrk(0) != addr) e(6);
brk(addr);
if (sbrk(0) != addr) e(8);
if (click != click2) e(9);
brk(addr + 2 * click);
if (sbrk(0) != addr + 2 * click) e(10);
sbrk(3 * click);
if (sbrk(0) != addr + 5 * click) e(11);
sbrk(-5 * click);
if (sbrk(0) != addr) e(12);
}
void test6b()
{
int i, err;
subtest = 2;
signal(SIGQUIT, SIG_IGN);
err = 0;
for (i = 0; i < 5000; i++)
if (zilch[i] != 0) err++;
if (err > 0) e(1);
kill(getpid(), SIGQUIT);
}