source: rtems/testsuites/smptests/smpatomic04/tasks.c @ 6931037

4.115
Last change on this file since 6931037 was 6931037, checked in by WeiY <wei.a.yang@…>, on 08/04/13 at 18:56:00

correct memory model in smpatomic test case

  • Property mode set to 100644
File size: 2.6 KB
Line 
1/*
2 * Copyright (c) 2012 Deng Hengyi.
3 *
4 *  This test case is to test atomic sub operation.
5 *
6 *  The license and distribution terms for this file may be
7 *  found in the file LICENSE in this distribution or at
8 *  http://www.rtems.com/license/LICENSE.
9 *
10 */
11
12#ifdef HAVE_CONFIG_H
13#include "config.h"
14#endif
15
16#include "system.h"
17
18#include <stdlib.h>
19#include <rtems/rtems/atomic.h>
20
21#define TEST_REPEAT 1000
22
23#define ATOMIC_FETCH_SUB_NO_BARRIER(NAME, TYPE, R_TYPE, cpuid, mem_bar)\
24{                                                        \
25  Atomic_##TYPE t;                                       \
26  R_TYPE a;                                              \
27  R_TYPE b;                                              \
28  R_TYPE c;                                              \
29  unsigned int i;                                        \
30  for (i = 0; i < TEST_REPEAT; i++){                     \
31    a = (R_TYPE)(rand() % ((R_TYPE)-1 / 2));             \
32    b = (R_TYPE)(rand() % ((R_TYPE)-1 / 2));             \
33    _Atomic_Store_##NAME(&t, a, ATOMIC_ORDER_RELEASE);   \
34    _Atomic_Fetch_sub_##NAME(&t, b, mem_bar);            \
35    c = _Atomic_Load_##NAME(&t, ATOMIC_ORDER_ACQUIRE);   \
36    rtems_test_assert(c == (R_TYPE)(a - b));             \
37  }                                                      \
38  locked_printf("\nCPU%d Atomic_Fetch_sub_" #NAME ": SUCCESS\n", cpuid); \
39}
40
41rtems_task Test_task(
42    rtems_task_argument argument
43    )
44{
45  uint32_t          cpu_num;
46  char              name[5];
47  char             *p;
48
49  /* Get the task name */
50  p = rtems_object_get_name( RTEMS_SELF, 5, name );
51  rtems_test_assert( p != NULL );
52
53   /* Get the CPU Number */
54  cpu_num = rtems_smp_get_current_processor();
55
56  /* Print that the task is up and running. */
57  /* test relaxed barrier */
58  ATOMIC_FETCH_SUB_NO_BARRIER(uint, Uint, uint_fast32_t, cpu_num, ATOMIC_ORDER_RELAXED);
59
60  ATOMIC_FETCH_SUB_NO_BARRIER(ptr, Pointer, uintptr_t, cpu_num, ATOMIC_ORDER_RELAXED);
61
62  /* test acquire barrier */
63  ATOMIC_FETCH_SUB_NO_BARRIER(uint, Uint, uint_fast32_t, cpu_num, ATOMIC_ORDER_ACQUIRE);
64
65  ATOMIC_FETCH_SUB_NO_BARRIER(ptr, Pointer, uintptr_t, cpu_num, ATOMIC_ORDER_ACQUIRE);
66
67  /* test release barrier */
68  ATOMIC_FETCH_SUB_NO_BARRIER(uint, Uint, uint_fast32_t, cpu_num, ATOMIC_ORDER_RELEASE);
69
70  ATOMIC_FETCH_SUB_NO_BARRIER(ptr, Pointer, uintptr_t, cpu_num, ATOMIC_ORDER_RELEASE);
71
72//  ATOMIC_FETCH_SUB_NO_BARRIER(64, cpu_num);
73
74  /* Set the flag that the task is up and running */
75  TaskRan[cpu_num] = true;
76
77  /* Drop into a loop which will keep this task on
78   * running on the cpu.
79   */
80  while(1);
81}
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