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
136
137
138
139
140
141
142
143
144
145
146
|
// Copyright (C) 2014 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "emugl/common/thread_store.h"
#include "emugl/common/mutex.h"
#include "emugl/common/testing/test_thread.h"
#include <gtest/gtest.h>
namespace emugl {
namespace {
// Helper class used to count instance creation and destruction.
class StaticCounter {
public:
enum {
kMaxInstances = 1000,
};
StaticCounter() {
Mutex::AutoLock lock(mMutex);
if (mCreationCount < kMaxInstances)
mInstances[mCreationCount] = this;
mCreationCount++;
}
~StaticCounter() {
Mutex::AutoLock lock(mMutex);
mDestructionCount++;
}
static void reset() {
Mutex::AutoLock lock(mMutex);
mCreationCount = 0;
mDestructionCount = 0;
}
static size_t getCreationCount() {
Mutex::AutoLock lock(mMutex);
return mCreationCount;
}
static size_t getDestructionCount() {
Mutex::AutoLock lock(mMutex);
return mDestructionCount;
}
static void freeAll() {
for (size_t n = 0; n < kMaxInstances; ++n)
delete mInstances[n];
}
private:
static Mutex mMutex;
static size_t mCreationCount;
static size_t mDestructionCount;
static StaticCounter* mInstances[kMaxInstances];
};
Mutex StaticCounter::mMutex;
size_t StaticCounter::mCreationCount = 0;
size_t StaticCounter::mDestructionCount = 0;
StaticCounter* StaticCounter::mInstances[kMaxInstances];
} // namespace
// Just check that we can create a new ThreadStore with an empty
// destructor, and use it in the current thread.
TEST(ThreadStore, MainThreadWithoutDestructor) {
ThreadStore store(NULL);
static int x = 42;
store.set(&x);
EXPECT_EQ(&x, store.get());
}
// The following test checks that exiting a thread correctly deletes
// any thread-local value stored in it.
static void simplyDestroy(void* value) {
delete (StaticCounter*) value;
}
static void* simpleThreadFunc(void* param) {
ThreadStore* store = static_cast<ThreadStore*>(param);
store->set(new StaticCounter());
ThreadStore::OnThreadExit();
return NULL;
}
TEST(ThreadStore, ThreadsWithDestructor) {
ThreadStore store(simplyDestroy);
const size_t kNumThreads = 1000;
TestThread* threads[kNumThreads];
StaticCounter::reset();
for (size_t n = 0; n < kNumThreads; ++n) {
threads[n] = new TestThread(&simpleThreadFunc, &store);
}
for (size_t n = 0; n < kNumThreads; ++n) {
threads[n]->join();
}
EXPECT_EQ(kNumThreads, StaticCounter::getCreationCount());
EXPECT_EQ(kNumThreads, StaticCounter::getDestructionCount());
for (size_t n = 0; n < kNumThreads; ++n) {
delete threads[n];
}
}
TEST(ThreadStore, ThreadsWithoutDestructor) {
ThreadStore store(NULL);
const size_t kNumThreads = 1000;
TestThread* threads[kNumThreads];
StaticCounter::reset();
for (size_t n = 0; n < kNumThreads; ++n) {
threads[n] = new TestThread(&simpleThreadFunc, &store);
}
for (size_t n = 0; n < kNumThreads; ++n) {
threads[n]->join();
}
EXPECT_EQ(kNumThreads, StaticCounter::getCreationCount());
EXPECT_EQ(0U, StaticCounter::getDestructionCount());
StaticCounter::freeAll();
for (size_t n = 0; n < kNumThreads; ++n) {
delete threads[n];
}
}
} // namespace emugl
|
