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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
// SPDX-License-Identifier: BSD-3-Clause
/* Copyright 2016-2020, Intel Corporation */
/*
* obj_cpp_mutex_posix.cpp -- cpp mutex test
*/
#include "pthread_common.hpp"
#include "unittest.hpp"
#include <libpmemobj++/mutex.hpp>
#include <libpmemobj++/persistent_ptr.hpp>
#include <libpmemobj++/pool.hpp>
#include <libpmemobj/atomic_base.h>
#include <mutex>
#define LAYOUT "cpp"
namespace nvobj = pmem::obj;
namespace
{
/* pool root structure */
struct root {
nvobj::mutex pmutex;
unsigned counter;
};
/* number of ops per thread */
const unsigned num_ops = 200;
/* the number of threads */
const unsigned num_threads = 30;
/*
* increment_pint -- (internal) test the mutex with an std::lock_guard
*/
void *
increment_pint(void *arg)
{
nvobj::persistent_ptr<struct root> *proot =
static_cast<nvobj::persistent_ptr<struct root> *>(arg);
for (unsigned i = 0; i < num_ops; ++i) {
std::lock_guard<nvobj::mutex> lock((*proot)->pmutex);
((*proot)->counter)++;
}
return nullptr;
}
/*
* decrement_pint -- (internal) test the mutex with an std::unique_lock
*/
void *
decrement_pint(void *arg)
{
nvobj::persistent_ptr<struct root> *proot =
static_cast<nvobj::persistent_ptr<struct root> *>(arg);
std::unique_lock<nvobj::mutex> lock((*proot)->pmutex);
for (unsigned i = 0; i < num_ops; ++i)
--((*proot)->counter);
lock.unlock();
return nullptr;
}
/*
* trylock_test -- (internal) test the trylock implementation
*/
void *
trylock_test(void *arg)
{
nvobj::persistent_ptr<struct root> *proot =
static_cast<nvobj::persistent_ptr<struct root> *>(arg);
for (;;) {
if ((*proot)->pmutex.try_lock()) {
((*proot)->counter)++;
(*proot)->pmutex.unlock();
break;
}
}
return nullptr;
}
/*
* mutex_zero_test -- (internal) test the zeroing constructor
*/
void
mutex_zero_test(nvobj::pool<struct root> &pop)
{
PMEMoid raw_mutex;
pmemobj_alloc(
pop.handle(), &raw_mutex, sizeof(PMEMmutex), 1,
[](PMEMobjpool *pop, void *ptr, void *arg) -> int {
PMEMmutex *mtx = static_cast<PMEMmutex *>(ptr);
pmemobj_memset_persist(pop, mtx, 1, sizeof(*mtx));
return 0;
},
nullptr);
nvobj::mutex *placed_mtx = new (pmemobj_direct(raw_mutex)) nvobj::mutex;
std::unique_lock<nvobj::mutex> lck(*placed_mtx);
}
/*
* mutex_test -- (internal) launch worker threads to test the pmutex
*/
template <typename Worker>
void
mutex_test(nvobj::pool<struct root> &pop, Worker function)
{
pthread_t threads[num_threads];
nvobj::persistent_ptr<struct root> proot = pop.root();
for (unsigned i = 0; i < num_threads; ++i)
ut_pthread_create(&threads[i], nullptr, function, &proot);
for (unsigned i = 0; i < num_threads; ++i)
ut_pthread_join(&threads[i], nullptr);
}
}
static void
test(int argc, char *argv[])
{
if (argc != 2)
UT_FATAL("usage: %s file-name", argv[0]);
const char *path = argv[1];
nvobj::pool<struct root> pop;
try {
pop = nvobj::pool<struct root>::create(
path, LAYOUT, PMEMOBJ_MIN_POOL, S_IWUSR | S_IRUSR);
} catch (pmem::pool_error &pe) {
UT_FATAL("!pool::create: %s %s", pe.what(), path);
}
mutex_zero_test(pop);
mutex_test(pop, increment_pint);
UT_ASSERTeq(pop.root()->counter, num_threads * num_ops);
mutex_test(pop, decrement_pint);
UT_ASSERTeq(pop.root()->counter, 0);
mutex_test(pop, trylock_test);
UT_ASSERTeq(pop.root()->counter, num_threads);
/* pmemcheck related persist */
pmemobj_persist(pop.handle(), &(pop.root()->counter),
sizeof(pop.root()->counter));
pop.close();
}
int
main(int argc, char *argv[])
{
return run_test([&] { test(argc, argv); });
}
|
