tests/unit/test_uatomic.c

   1 /*
   2  * test_uatomic.c
   3  *
   4  * Userspace RCU library - test atomic operations
   5  *
   6  * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include <stdio.h>
  24 #include <urcu/uatomic.h>
  25
  26 #include "tap.h"
  27
  28 #define NR_TESTS 17
  29
  30 struct testvals {
  31 #ifdef UATOMIC_HAS_ATOMIC_BYTE
  32         unsigned char c;
  33 #endif
  34 #ifdef UATOMIC_HAS_ATOMIC_SHORT
  35         unsigned short s;
  36 #endif
  37         unsigned int i;
  38         unsigned long l;
  39 };
  40
  41 static struct testvals vals;
  42
  43 #define do_test(ptr)                            \
  44 do {                                            \
  45         __typeof__(*(ptr)) v;                   \
  46                                                 \
  47         uatomic_add(ptr, 10);                   \
  48         ok1(uatomic_read(ptr) == 10);   \
  49                                                 \
  50         uatomic_add(ptr, -11UL);                \
  51         ok1(uatomic_read(ptr) == (__typeof__(*(ptr)))-1UL);     \
  52                                                 \
  53         v = uatomic_cmpxchg(ptr, -1UL, 22);     \
  54         ok1(uatomic_read(ptr) == 22);   \
  55         ok1(v == (__typeof__(*(ptr)))-1UL);     \
  56                                                 \
  57         v = uatomic_cmpxchg(ptr, 33, 44);       \
  58         ok1(uatomic_read(ptr) == 22);   \
  59         ok1(v == 22);                   \
  60                                                 \
  61         v = uatomic_xchg(ptr, 55);              \
  62         ok1(uatomic_read(ptr) == 55);   \
  63         ok1(v == 22);                   \
  64                                                 \
  65         uatomic_set(ptr, 22);                   \
  66         uatomic_inc(ptr);                       \
  67         ok1(uatomic_read(ptr) == 23);   \
  68                                                 \
  69         uatomic_dec(ptr);                       \
  70         ok1(uatomic_read(ptr) == 22);   \
  71                                                 \
  72         v = uatomic_add_return(ptr, 74);        \
  73         ok1(v == 96);                   \
  74         ok1(uatomic_read(ptr) == 96);   \
  75                                                 \
  76         uatomic_or(ptr, 58);                    \
  77         ok1(uatomic_read(ptr) == 122);  \
  78                                                 \
  79         v = uatomic_sub_return(ptr, 1);         \
  80         ok1(v == 121);                  \
  81                                                 \
  82         uatomic_sub(ptr, (unsigned int) 2);     \
  83         ok1(uatomic_read(ptr) == 119);  \
  84                                                 \
  85         uatomic_inc(ptr);                       \
  86         uatomic_inc(ptr);                       \
  87         ok1(uatomic_read(ptr) == 121);  \
  88                                                 \
  89         uatomic_and(ptr, 129);                  \
  90         ok1(uatomic_read(ptr) == 1);    \
  91                                                 \
  92 } while (0)
  93
  94 int main(void)
  95 {
  96         int nr_run = 2;
  97 #ifdef UATOMIC_HAS_ATOMIC_BYTE
  98         nr_run += 1;
  99 #endif
 100 #ifdef UATOMIC_HAS_ATOMIC_SHORT
 101         nr_run += 1;
 102 #endif
 103
 104         plan_tests(nr_run * NR_TESTS);
 105 #ifdef UATOMIC_HAS_ATOMIC_BYTE
 106         diag("Test atomic ops on byte");
 107         do_test(&vals.c);
 108 #endif
 109 #ifdef UATOMIC_HAS_ATOMIC_SHORT
 110         diag("Test atomic ops on short");
 111         do_test(&vals.s);
 112 #endif
 113         diag("Test atomic ops on int");
 114         do_test(&vals.i);
 115         diag("Test atomic ops on long");
 116         do_test(&vals.l);
 117
 118         return exit_status();
 119 }