minix/tests/test6.c

   1 /* test 6 */
   2
   3 #include <sys/types.h>
   4 #include <sys/stat.h>
   5 #include <errno.h>
   6 #include <fcntl.h>
   7 #include <limits.h>
   8 #include <signal.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12
  13 int max_error = 3;
  14 #include "common.h"
  15
  16
  17 int subtest = 1;
  18 int zilch[5000];
  19
  20
  21 int main(int argc, char *argv []);
  22 void test6a(void);
  23 void test6b(void);
  24
  25 int main(argc, argv)
  26 int argc;
  27 char *argv[];
  28 {
  29   int i, m = 0xFFFF;
  30
  31   if (argc == 2) m = atoi(argv[1]);
  32
  33   start(6);
  34
  35   for (i = 0; i < 70; i++) {
  36         if (m & 00001) test6a();
  37         if (m & 00002) test6b();
  38   }
  39
  40   quit();
  41   return(-1);                   /* impossible */
  42 }
  43
  44 void test6a()
  45 {
  46 /* Test sbrk() and brk(). */
  47
  48   char *addr, *addr2, *addr3;
  49   int i, del, click, click2;
  50
  51   subtest = 1;
  52   addr = sbrk(0);
  53   addr = sbrk(0);               /* force break to a click boundary */
  54   for (i = 0; i < 10; i++) sbrk(7 * i);
  55   for (i = 0; i < 10; i++) sbrk(-7 * i);
  56   if (sbrk(0) != addr) e(1);
  57   sbrk(30);
  58   if (brk(addr) != 0) e(2);
  59   if (sbrk(0) != addr) e(3);
  60
  61   del = 0;
  62   do {
  63         del++;
  64         brk(addr + del);
  65         addr2 = sbrk(0);
  66   } while (addr2 == addr);
  67   click = addr2 - addr;
  68   sbrk(-1);
  69   if (sbrk(0) != addr) e(4);
  70   brk(addr);
  71   if (sbrk(0) != addr) e(5);
  72
  73   del = 0;
  74   do {
  75         del++;
  76         brk(addr - del);
  77         addr3 = sbrk(0);
  78   } while (addr3 == addr);
  79   click2 = addr - addr3;
  80   sbrk(1);
  81   if (sbrk(0) != addr) e(6);
  82   brk(addr);
  83   if (sbrk(0) != addr) e(8);
  84   if (click != click2) e(9);
  85
  86   brk(addr + 2 * click);
  87   if (sbrk(0) != addr + 2 * click) e(10);
  88   sbrk(3 * click);
  89   if (sbrk(0) != addr + 5 * click) e(11);
  90   sbrk(-5 * click);
  91   if (sbrk(0) != addr) e(12);
  92 }
  93
  94 void test6b()
  95 {
  96   int i, err;
  97
  98   subtest = 2;
  99   signal(SIGQUIT, SIG_IGN);
 100   err = 0;
 101   for (i = 0; i < 5000; i++)
 102         if (zilch[i] != 0) err++;
 103   if (err > 0) e(1);
 104   kill(getpid(), SIGQUIT);
 105 }
 106