blob: 40565a86889b0875ef3dcc3eac42b5265ddad132 (
plain) (
blame)
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
|
#include "event.h"
#include "atomic.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/thread/pool.h>
namespace {
struct TSharedData {
TSharedData()
: Counter(0)
, failed(false)
{
}
TAtomic Counter;
TManualEvent event;
bool failed;
};
struct TThreadTask: public IObjectInQueue {
public:
TThreadTask(TSharedData& data, size_t id)
: Data_(data)
, Id_(id)
{
}
void Process(void*) override {
THolder<TThreadTask> This(this);
if (Id_ == 0) {
usleep(100);
bool cond = Data_.Counter == 0;
if (!cond) {
Data_.failed = true;
}
Data_.event.Signal();
} else {
while (!Data_.event.WaitT(TDuration::Seconds(100))) {
}
AtomicAdd(Data_.Counter, Id_);
}
}
private:
TSharedData& Data_;
size_t Id_;
};
class TSignalTask: public IObjectInQueue {
private:
TManualEvent& Ev_;
public:
TSignalTask(TManualEvent& ev)
: Ev_(ev)
{
}
void Process(void*) override {
Ev_.Signal();
}
};
class TOwnerTask: public IObjectInQueue {
public:
TManualEvent Barrier;
THolder<TManualEvent> Ev;
public:
TOwnerTask()
: Ev(new TManualEvent)
{
}
void Process(void*) override {
Ev->WaitI();
Ev.Destroy();
}
};
}
Y_UNIT_TEST_SUITE(EventTest) {
Y_UNIT_TEST(WaitAndSignalTest) {
TSharedData data;
TThreadPool queue;
queue.Start(5);
for (size_t i = 0; i < 5; ++i) {
UNIT_ASSERT(queue.Add(new TThreadTask(data, i)));
}
queue.Stop();
UNIT_ASSERT(data.Counter == 10);
UNIT_ASSERT(!data.failed);
}
Y_UNIT_TEST(ConcurrentSignalAndWaitTest) {
// test for problem detected by thread-sanitizer (signal/wait race) SEARCH-2113
const size_t limit = 200;
TManualEvent event[limit];
TThreadPool queue;
queue.Start(limit);
TVector<THolder<IObjectInQueue>> tasks;
for (size_t i = 0; i < limit; ++i) {
tasks.emplace_back(MakeHolder<TSignalTask>(event[i]));
UNIT_ASSERT(queue.Add(tasks.back().Get()));
}
for (size_t i = limit; i != 0; --i) {
UNIT_ASSERT(event[i - 1].WaitT(TDuration::Seconds(90)));
}
queue.Stop();
}
/** Test for a problem: http://nga.at.yandex-team.ru/5772 */
Y_UNIT_TEST(DestructorBeforeSignalFinishTest) {
return;
TVector<THolder<IObjectInQueue>> tasks;
for (size_t i = 0; i < 1000; ++i) {
auto owner = MakeHolder<TOwnerTask>();
tasks.emplace_back(MakeHolder<TSignalTask>(*owner->Ev));
tasks.emplace_back(std::move(owner));
}
TThreadPool queue;
queue.Start(4);
for (auto& task : tasks) {
UNIT_ASSERT(queue.Add(task.Get()));
}
queue.Stop();
}
}
|
