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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// Copyright (C) 2016 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 "base/SharedMemory.h"
#include <gtest/gtest.h>
#include <type_traits>
#include <utility>
namespace android {
namespace base {
TEST(SharedMemory, ShareVisibileWithinSameProc) {
const mode_t user_read_only = 0600;
std::string unique_name = "tst_21654869810548";
std::string message = "Hello World!";
base::SharedMemory mWriter(unique_name, message.size());
base::SharedMemory mReader(unique_name, message.size());
ASSERT_FALSE(mWriter.isOpen());
ASSERT_FALSE(mReader.isOpen());
int err = mWriter.create(user_read_only);
ASSERT_EQ(0, err);
err = mReader.open(SharedMemory::AccessMode::READ_ONLY);
ASSERT_EQ(0, err);
ASSERT_TRUE(mWriter.isOpen());
ASSERT_TRUE(mReader.isOpen());
memcpy(*mWriter, message.c_str(), message.size());
std::string read(static_cast<const char*>(*mReader));
ASSERT_TRUE(message == read);
mWriter.close();
mReader.close();
ASSERT_FALSE(mWriter.isOpen());
ASSERT_FALSE(mReader.isOpen());
}
// TODO: Provide support for TestSystem.
// TEST(SharedMemory, ShareFileBackedVisibileWithinSameProc) {
// android::base::TestSystem ts("/home", 64);
// // Note the unicode character in the filename below!!
// std::string unique_name = android::base::PathUtils::join(
// ts.getTempRoot()->path(), "shāred.mem");
// const mode_t user_read_only = 0600;
// std::string message = "Hello World!";
// base::SharedMemory mWriter("file:///" + unique_name, message.size());
// base::SharedMemory mReader("file:///" + unique_name, message.size());
//
// ASSERT_FALSE(mWriter.isOpen());
// ASSERT_FALSE(mReader.isOpen());
//
// int err = mWriter.create(user_read_only);
// ASSERT_EQ(0, err);
// err = mReader.open(SharedMemory::AccessMode::READ_ONLY);
// ASSERT_EQ(0, err);
//
// ASSERT_TRUE(mWriter.isOpen());
// ASSERT_TRUE(mReader.isOpen());
//
// memcpy(*mWriter, message.c_str(), message.size());
// std::string read(static_cast<const char*>(*mReader));
//
// EXPECT_EQ(message, read);
//
// mWriter.close();
// mReader.close();
// ASSERT_FALSE(mWriter.isOpen());
// ASSERT_FALSE(mReader.isOpen());
// }
// TEST(SharedMemory, ShareFileCanReadAfterDelete) {
// // Make sure you can still read the memory, even if the server has marked
// // the file for deletion.
// android::base::TestSystem ts("/home", 64);
// // Note the unicode character in the filename below!!
// std::string unique_name = android::base::PathUtils::join(
// ts.getTempRoot()->path(), "shāred.mem");
// const mode_t user_read_only = 0600;
// std::string message = "Hello World!";
// base::SharedMemory mWriter("file://" + unique_name, message.size());
// base::SharedMemory mReader("file://" + unique_name, message.size());
//
// ASSERT_FALSE(mWriter.isOpen());
// ASSERT_FALSE(mReader.isOpen());
//
// mWriter.create(user_read_only);
// memcpy(*mWriter, message.c_str(), message.size());
//
// mReader.open(SharedMemory::AccessMode::READ_ONLY);
// mWriter.close();
//
// std::string read(static_cast<const char*>(*mReader));
// ASSERT_TRUE(message == read);
//
// mReader.close();
// }
// TEST(SharedMemory, ShareFileDoesCleanedUp) {
// // Make sure that the file gets removed after the server closes down.
// android::base::TestSystem ts("/home", 64);
// std::string unique_name = android::base::PathUtils::join(
// ts.getTempRoot()->path(), "shared.mem");
// const mode_t user_read_only = 0600;
// std::string message = "Hello World!";
// base::SharedMemory mWriter("file://" + unique_name, message.size());
//
// ASSERT_FALSE(mWriter.isOpen());
// mWriter.create(user_read_only);
// memcpy(*mWriter, message.c_str(), message.size());
// ASSERT_TRUE(ts.host()->pathExists(unique_name));
// mWriter.close();
// ASSERT_FALSE(ts.host()->pathExists(unique_name));
// }
// TEST(SharedMemory, CanShare4KVideo) {
// // Make sure we can use this for sharing video, for now 4K ought to be
// // enough for anybody.
// // This test will likely segfault/fail on a default MacOS config when using
// // shared memory.
// //
// // See: sysctl -A | grep shm
// // which should produce something like:
// // kern.sysv.shmmax: 4194304
// // kern.sysv.shmmin: 1
// // kern.sysv.shmmni: 32
// // kern.sysv.shmseg: 8
// // kern.sysv.shmall: 1024
//
// const int FourK = 3840 * 2160 * 4; // 4k resolution with 4 bytes per pixel.
// android::base::TestSystem ts("/home", FourK);
// std::string unique_name = android::base::PathUtils::join(
// ts.getTempRoot()->path(), "shared.mem");
// const mode_t user_read_only = 0600;
// std::string message = "Hello World!";
// base::SharedMemory mWriter("file://" + unique_name, message.size());
//
// ASSERT_FALSE(mWriter.isOpen());
// mWriter.create(user_read_only);
// memcpy(*mWriter, message.c_str(), message.size());
// ASSERT_TRUE(ts.host()->pathExists(unique_name));
// mWriter.close();
// ASSERT_FALSE(ts.host()->pathExists(unique_name));
// }
TEST(SharedMemory, CannotOpenTwice) {
const mode_t user_read_only = 0600;
std::string unique_name = "tst_21654869810548";
std::string message = "Hello World!";
base::SharedMemory mWriter(unique_name, message.size());
base::SharedMemory mReader(unique_name, message.size());
int err = mWriter.create(user_read_only);
ASSERT_EQ(0, err);
err = mReader.open(SharedMemory::AccessMode::READ_ONLY);
ASSERT_EQ(0, err);
// Second create should fail..
err = mWriter.create(user_read_only);
ASSERT_NE(0, err);
// Second open should fail..
err = mReader.open(SharedMemory::AccessMode::READ_ONLY);
ASSERT_NE(0, err);
}
TEST(SharedMemory, CreateNoMapping) {
const mode_t user_read_write = 0755;
std::string name = "tst_21654869810548";
base::SharedMemory mem(name, 256);
ASSERT_FALSE(mem.isOpen());
int err = mem.createNoMapping(user_read_write);
ASSERT_EQ(0, err);
ASSERT_FALSE(mem.isMapped());
mem.close();
ASSERT_FALSE(mem.isOpen());
}
} // namespace base
} // namespace android
|
