kernel/qsharedmemory_unix.cpp

Switch to Source codePreprocessed file
LineSource CodeCoverage
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8QSharedMemoryPrivate::QSharedMemoryPrivate() -
9 : QObjectPrivate(), memory(0), size(0), error(QSharedMemory::NoError), -
10 -
11 systemSemaphore(QString()), lockedByMe(false), -
12 -
13 unix_key(0) -
14{ -
15}
executed: }
Execution Count:1
1
16 -
17void QSharedMemoryPrivate::setErrorString(const QString &function) -
18{ -
19 -
20 switch ((*__errno_location ())) { -
21 case 13: -
22 errorString = QSharedMemory::tr("%1: permission denied").arg(function); -
23 error = QSharedMemory::PermissionDenied; -
24 break;
never executed: break;
0
25 case 17: -
26 errorString = QSharedMemory::tr("%1: already exists").arg(function); -
27 error = QSharedMemory::AlreadyExists; -
28 break;
never executed: break;
0
29 case 2: -
30 errorString = QSharedMemory::tr("%1: doesn't exist").arg(function); -
31 error = QSharedMemory::NotFound; -
32 break;
never executed: break;
0
33 case 24: -
34 case 12: -
35 case 28: -
36 errorString = QSharedMemory::tr("%1: out of resources").arg(function); -
37 error = QSharedMemory::OutOfResources; -
38 break;
never executed: break;
0
39 default: -
40 errorString = QSharedMemory::tr("%1: unknown error %2").arg(function).arg((*__errno_location ())); -
41 error = QSharedMemory::UnknownError; -
42 -
43 -
44 -
45 }
never executed: }
0
46}
never executed: }
0
47 -
48 -
49 -
50 -
51 -
52 -
53key_t QSharedMemoryPrivate::handle() -
54{ -
55 -
56 if (unix_key)
never evaluated: unix_key
0
57 return unix_key;
never executed: return unix_key;
0
58 -
59 -
60 if (nativeKey.isEmpty()) {
never evaluated: nativeKey.isEmpty()
0
61 errorString = QSharedMemory::tr("%1: key is empty").arg(QLatin1String("QSharedMemory::handle:")); -
62 error = QSharedMemory::KeyError; -
63 return 0;
never executed: return 0;
0
64 } -
65 -
66 -
67 if (!QFile::exists(nativeKey)) {
never evaluated: !QFile::exists(nativeKey)
0
68 errorString = QSharedMemory::tr("%1: UNIX key file doesn't exist").arg(QLatin1String("QSharedMemory::handle:")); -
69 error = QSharedMemory::NotFound; -
70 return 0;
never executed: return 0;
0
71 } -
72 -
73 unix_key = ftok(QFile::encodeName(nativeKey).constData(), 'Q'); -
74 if (-1 == unix_key) {
never evaluated: -1 == unix_key
0
75 errorString = QSharedMemory::tr("%1: ftok failed").arg(QLatin1String("QSharedMemory::handle:")); -
76 error = QSharedMemory::KeyError; -
77 unix_key = 0; -
78 }
never executed: }
0
79 return unix_key;
never executed: return unix_key;
0
80} -
81int QSharedMemoryPrivate::createUnixKeyFile(const QString &fileName) -
82{ -
83 if (QFile::exists(fileName))
partially evaluated: QFile::exists(fileName)
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:46
0-46
84 return 0;
never executed: return 0;
0
85 -
86 int fd = qt_safe_open(QFile::encodeName(fileName).constData(), -
87 0200 | 0100 | 02, 0640); -
88 if (-1 == fd) {
partially evaluated: -1 == fd
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:46
0-46
89 if ((*__errno_location ()) == 17)
never evaluated: (*__errno_location ()) == 17
0
90 return 0;
never executed: return 0;
0
91 return -1;
never executed: return -1;
0
92 } else { -
93 close(fd); -
94 }
executed: }
Execution Count:46
46
95 return 1;
executed: return 1;
Execution Count:46
46
96} -
97 -
98 -
99 -
100 -
101bool QSharedMemoryPrivate::cleanHandle() -
102{ -
103 unix_key = 0; -
104 return true;
never executed: return true;
0
105} -
106 -
107bool QSharedMemoryPrivate::create(int size) -
108{ -
109 -
110 bool createdFile = false; -
111 int built = createUnixKeyFile(nativeKey); -
112 if (built == -1) {
never evaluated: built == -1
0
113 errorString = QSharedMemory::tr("%1: unable to make key").arg(QLatin1String("QSharedMemory::handle:")); -
114 error = QSharedMemory::KeyError; -
115 return false;
never executed: return false;
0
116 } -
117 if (built == 1) {
never evaluated: built == 1
0
118 createdFile = true; -
119 }
never executed: }
0
120 -
121 -
122 if (!handle()) {
never evaluated: !handle()
0
123 if (createdFile)
never evaluated: createdFile
0
124 QFile::remove(nativeKey);
never executed: QFile::remove(nativeKey);
0
125 return false;
never executed: return false;
0
126 } -
127 -
128 -
129 if (-1 == shmget(unix_key, size, 0600 | 01000 | 02000)) {
never evaluated: -1 == shmget(unix_key, size, 0600 | 01000 | 02000)
0
130 QString function = QLatin1String("QSharedMemory::create"); -
131 switch ((*__errno_location ())) { -
132 case 22: -
133 errorString = QSharedMemory::tr("%1: system-imposed size restrictions").arg(QLatin1String("QSharedMemory::handle")); -
134 error = QSharedMemory::InvalidSize; -
135 break;
never executed: break;
0
136 default: -
137 setErrorString(function); -
138 }
never executed: }
0
139 if (createdFile && error != QSharedMemory::AlreadyExists)
never evaluated: createdFile
never evaluated: error != QSharedMemory::AlreadyExists
0
140 QFile::remove(nativeKey);
never executed: QFile::remove(nativeKey);
0
141 return false;
never executed: return false;
0
142 } -
143 -
144 return true;
never executed: return true;
0
145} -
146 -
147bool QSharedMemoryPrivate::attach(QSharedMemory::AccessMode mode) -
148{ -
149 -
150 int id = shmget(unix_key, 0, (mode == QSharedMemory::ReadOnly ? 0400 : 0600)); -
151 if (-1 == id) {
never evaluated: -1 == id
0
152 setErrorString(QLatin1String("QSharedMemory::attach (shmget)")); -
153 return false;
never executed: return false;
0
154 } -
155 -
156 -
157 memory = shmat(id, 0, (mode == QSharedMemory::ReadOnly ? 010000 : 0)); -
158 if ((void*) - 1 == memory) {
never evaluated: (void*) - 1 == memory
0
159 memory = 0; -
160 setErrorString(QLatin1String("QSharedMemory::attach (shmat)")); -
161 return false;
never executed: return false;
0
162 } -
163 -
164 -
165 shmid_ds shmid_ds; -
166 if (!shmctl(id, 2, &shmid_ds)) {
never evaluated: !shmctl(id, 2, &shmid_ds)
0
167 size = (int)shmid_ds.shm_segsz; -
168 } else {
never executed: }
0
169 setErrorString(QLatin1String("QSharedMemory::attach (shmctl)")); -
170 return false;
never executed: return false;
0
171 } -
172 -
173 return true;
never executed: return true;
0
174} -
175 -
176bool QSharedMemoryPrivate::detach() -
177{ -
178 -
179 if (-1 == shmdt(memory)) {
never evaluated: -1 == shmdt(memory)
0
180 QString function = QLatin1String("QSharedMemory::detach"); -
181 switch ((*__errno_location ())) { -
182 case 22: -
183 errorString = QSharedMemory::tr("%1: not attached").arg(function); -
184 error = QSharedMemory::NotFound; -
185 break;
never executed: break;
0
186 default: -
187 setErrorString(function); -
188 }
never executed: }
0
189 return false;
never executed: return false;
0
190 } -
191 memory = 0; -
192 size = 0; -
193 -
194 -
195 int id = shmget(unix_key, 0, 0400); -
196 cleanHandle(); -
197 -
198 struct shmid_ds shmid_ds; -
199 if (0 != shmctl(id, 2, &shmid_ds)) {
never evaluated: 0 != shmctl(id, 2, &shmid_ds)
0
200 switch ((*__errno_location ())) { -
201 case 22: -
202 return true;
never executed: return true;
0
203 default: -
204 return false;
never executed: return false;
0
205 } -
206 }
never executed: }
0
207 -
208 if (shmid_ds.shm_nattch == 0) {
never evaluated: shmid_ds.shm_nattch == 0
0
209 -
210 if (-1 == shmctl(id, 0, &shmid_ds)) {
never evaluated: -1 == shmctl(id, 0, &shmid_ds)
0
211 setErrorString(QLatin1String("QSharedMemory::remove")); -
212 switch ((*__errno_location ())) { -
213 case 22: -
214 return true;
never executed: return true;
0
215 default: -
216 return false;
never executed: return false;
0
217 } -
218 }
never executed: }
0
219 -
220 -
221 if (!QFile::remove(nativeKey))
never evaluated: !QFile::remove(nativeKey)
0
222 return false;
never executed: return false;
0
223 }
never executed: }
0
224 return true;
never executed: return true;
0
225} -
226 -
227 -
228 -
229 -
Switch to Source codePreprocessed file
Generated by Squish Coco Non-Commercial