git.ozlabs.org Git - ccan/blob - ccan/likely/test/run-debug.c

   1 #define DEBUG 1
   2 #include <ccan/likely/likely.c>
   3 #include <ccan/likely/likely.h>
   4 #include <ccan/tap/tap.h>
   5 #include <stdlib.h>
   6
   7 static bool one_seems_likely(unsigned int val)
   8 {
   9         if (likely(val == 1))
  10                 return true;
  11         return false;
  12 }
  13
  14 static bool one_seems_unlikely(unsigned int val)
  15 {
  16         if (unlikely(val == 1))
  17                 return true;
  18         return false;
  19 }
  20
  21 static bool likely_one_unlikely_two(unsigned int val1, unsigned int val2)
  22 {
  23         /* Same line, check we don't get confused! */
  24         if (likely(val1 == 1) && unlikely(val2 == 2))
  25                 return true;
  26         return false;
  27 }
  28
  29 int main(int argc, char *argv[])
  30 {
  31         const char *bad;
  32
  33         plan_tests(13);
  34
  35         /* Correct guesses. */
  36         one_seems_likely(1);
  37         ok1(likely_stats(0, 90) == NULL);
  38         one_seems_unlikely(2);
  39         ok1(likely_stats(0, 90) == NULL);
  40
  41         /* Incorrect guesses. */
  42         one_seems_likely(0);
  43         one_seems_likely(2);
  44         /* Hasn't been hit 4 times, so this fails */
  45         ok1(!likely_stats(4, 90));
  46         bad = likely_stats(3, 90);
  47         ok(strends(bad, "run-debug.c:9:likely(val == 1) correct 33% (1/3)"),
  48            "likely_stats returned %s", bad);
  49
  50         /* Nothing else above 90% */
  51         ok1(!likely_stats(0, 90));
  52
  53         /* This should get everything. */
  54         bad = likely_stats(0, 100);
  55         ok(strends(bad, "run-debug.c:16:unlikely(val == 1) correct 100% (1/1)"),
  56            "likely_stats returned %s", bad);
  57
  58         /* Nothing left (table is actually cleared) */
  59         ok1(!likely_stats(0, 100));
  60
  61         /* Make sure unlikely works */
  62         one_seems_unlikely(0);
  63         one_seems_unlikely(2);
  64         one_seems_unlikely(1);
  65
  66         bad = likely_stats(0, 90);
  67         ok(strends(bad, "run-debug.c:16:unlikely(val == 1) correct 66% (2/3)"),
  68            "likely_stats returned %s", bad);
  69         ok1(!likely_stats(0, 100));
  70
  71         likely_one_unlikely_two(1, 1);
  72         likely_one_unlikely_two(1, 1);
  73         likely_one_unlikely_two(1, 1);
  74         ok1(!likely_stats(0, 90));
  75         likely_one_unlikely_two(1, 2);
  76
  77         bad = likely_stats(0, 90);
  78         ok(strends(bad, "run-debug.c:24:unlikely(val2 == 2) correct 75% (3/4)"),
  79            "likely_stats returned %s", bad);
  80         bad = likely_stats(0, 100);
  81         ok(strends(bad, "run-debug.c:24:likely(val1 == 1) correct 100% (4/4)"),
  82            "likely_stats returned %s", bad);
  83
  84         ok1(!likely_stats(0, 100));
  85
  86         exit(exit_status());
  87 }