summaryrefslogtreecommitdiffstats
path: root/ipc/ipdl/test/cxx/TestRacyInterruptReplies.cpp
blob: 513b84f73ed80c4a08532e567043c79147a96fdf (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
#include "TestRacyInterruptReplies.h"

#include "IPDLUnitTests.h"      // fail etc.

namespace mozilla {
namespace _ipdltest {

//-----------------------------------------------------------------------------
// parent

TestRacyInterruptRepliesParent::TestRacyInterruptRepliesParent() : mReplyNum(0)
{
    MOZ_COUNT_CTOR(TestRacyInterruptRepliesParent);
}

TestRacyInterruptRepliesParent::~TestRacyInterruptRepliesParent()
{
    MOZ_COUNT_DTOR(TestRacyInterruptRepliesParent);
}

void
TestRacyInterruptRepliesParent::Main()
{
    int replyNum = -1;
    if (!CallR_(&replyNum))
        fail("calling R()");

    if (1 != replyNum)
        fail("this should have been the first reply to R()");

    if (!SendChildTest())
        fail("sending ChildStart");
}

bool
TestRacyInterruptRepliesParent::RecvA_()
{
    int replyNum = -1;
    // this R() call races with the reply being generated by the other
    // side to the R() call from Main().  This is a pretty nasty edge
    // case for which one could argue we're breaking in-order message
    // delivery, since this side will process the second reply to R()
    // before the first.
    if (!CallR_(&replyNum))
        fail("calling R()");

    if (2 != replyNum)
        fail("this should have been the second reply to R()");

    return true;
}

bool
TestRacyInterruptRepliesParent::Answer_R(int* replyNum)
{
    *replyNum = ++mReplyNum;

    if (1 == *replyNum)
        if (!Send_A())
            fail("sending _A()");

    return true;
}

//-----------------------------------------------------------------------------
// child

TestRacyInterruptRepliesChild::TestRacyInterruptRepliesChild() : mReplyNum(0)
{
    MOZ_COUNT_CTOR(TestRacyInterruptRepliesChild);
}

TestRacyInterruptRepliesChild::~TestRacyInterruptRepliesChild()
{
    MOZ_COUNT_DTOR(TestRacyInterruptRepliesChild);
}

bool
TestRacyInterruptRepliesChild::AnswerR_(int* replyNum)
{
    *replyNum = ++mReplyNum;

    if (1 == *replyNum)
        SendA_();

    return true;
}

bool
TestRacyInterruptRepliesChild::RecvChildTest()
{
    int replyNum = -1;
    if (!Call_R(&replyNum))
        fail("calling R()");

    if (1 != replyNum)
        fail("this should have been the first reply to R()");

    Close();

    return true;
}

bool
TestRacyInterruptRepliesChild::Recv_A()
{
    int replyNum = -1;

    if (!Call_R(&replyNum))
        fail("calling _R()");

    if (2 != replyNum)
        fail("this should have been the second reply to R()");

    return true;
}

} // namespace _ipdltest
} // namespace mozilla