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