summaryrefslogtreecommitdiffstats
path: root/src/usr/testcore/lib/synctest.H
blob: e8b0ef1e05265a92a77fc94d972a9502652800a2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
//  IBM_PROLOG_BEGIN_TAG
//  This is an automatically generated prolog.
//
//  $Source: src/usr/testcore/lib/synctest.H $
//
//  IBM CONFIDENTIAL
//
//  COPYRIGHT International Business Machines Corp. 2011
//
//  p1
//
//  Object Code Only (OCO) source materials
//  Licensed Internal Code Source Materials
//  IBM HostBoot Licensed Internal Code
//
//  The source code for this program is not published or other-
//  wise divested of its trade secrets, irrespective of what has
//  been deposited with the U.S. Copyright Office.
//
//  Origin: 30
//
//  IBM_PROLOG_END
#ifndef __SYNCTEST_H
#define __SYNCTEST_H
/**
 *  @file synctest.H
 *
 *  @brief Test cases for the sycronization
*/

#include <cxxtest/TestSuite.H>
#include <sys/sync.h>
#include <sys/task.h>
#include <sys/time.h>

#include <kernel/timemgr.H>

#define NS_PER_SEC (1000000ull)
#define TEN_CTX_SWITCHES ((NS_PER_SEC/TimeManager::TIMESLICE_PER_SEC)*10)

class SyncTest: public CxxTest::TestSuite
{
    public:


        void testMutex()
        {
            mutex_init(&mutex);
            barrier_init(&barrier, 7);

            task_create(func1, this);
            task_create(func2, this);
            task_create(func2, this);
            task_create(func2, this);
            task_create(func2, this);
            task_create(func2, this);
            barrier_wait(&barrier);
            TS_TRACE("ALL THREADS ENDED");
        }

        void testMutexDoubleWait()
        {
            mutex_init(&mutex);
            barrier_init(&barrier, 3);

            mutex_lock(&mutex);
            task_create(func2, this);
            task_create(func2, this);
            nanosleep(0,TEN_CTX_SWITCHES);
            mutex_unlock(&mutex);
            barrier_wait(&barrier);
            TS_TRACE("ALL THREADS ENDED");
        }

        void testBarrier()
        {
            barrier_t barrier;
            barrier_init(&barrier,3);
            task_create(func3,&barrier);
            task_create(func4,&barrier);
            barrier_wait(&barrier);
            TS_TRACE("B0");
            barrier_destroy(&barrier);
        }

    private:

        mutex_t mutex;
        barrier_t barrier;

        static void func1(void * i_p)
        {
            SyncTest * my = (SyncTest *) i_p;
            mutex_t * mutex = &(my->mutex);
            barrier_t * barrier = &(my->barrier);

            mutex_lock(mutex);
            for(int i = 0; i < 100000; ++i);
            TS_TRACE("ME FIRST");
            mutex_unlock(mutex);
            barrier_wait(barrier);
            task_end();
        }

        static void func2(void * i_p)
        {
            SyncTest * my = (SyncTest *) i_p;
            mutex_t * mutex = &(my->mutex);
            barrier_t * barrier = &(my->barrier);

            mutex_lock(mutex);
            TS_TRACE("ME NEXT");
            mutex_unlock(mutex);
            barrier_wait(barrier);
            task_end();
        }

        static void func3(void * i_p)
        {
            barrier_t * barrier = (barrier_t *) i_p;
            barrier_wait(barrier);
            TS_TRACE("B1");
            task_end();
        }
        static void func4(void * i_p)
        {
            barrier_t * barrier = (barrier_t *) i_p;
            barrier_wait(barrier);
            TS_TRACE("B2");
            task_end();
        }

};
#endif

OpenPOWER on IntegriCloud