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39
40#include "qsystemsemaphore.h"
41#include "qsystemsemaphore_p.h"
42
43#include <qdebug.h>
44#include <qcoreapplication.h>
45
46#ifndef QT_NO_SYSTEMSEMAPHORE
47
48#include <sys/types.h>
49#ifndef QT_POSIX_IPC
50#include <sys/ipc.h>
51#include <sys/sem.h>
52#endif
53#include <fcntl.h>
54#include <errno.h>
55
56#include "private/qcore_unix_p.h"
57
58QT_BEGIN_NAMESPACE
59
60QSystemSemaphorePrivate::QSystemSemaphorePrivate() :
61#ifndef QT_POSIX_IPC
62 unix_key(-1), semaphore(-1), createdFile(false),
63#else
64 semaphore(SEM_FAILED),
65#endif // QT_POSIX_IPC
66 createdSemaphore(false), error(QSystemSemaphore::NoError)
67{
68}
69
70void QSystemSemaphorePrivate::setErrorString(const QString &function)
71{
72 // EINVAL is handled in functions so they can give better error strings
73 switch (errno) {
74 case EPERM:
75 case EACCES:
76 errorString = QCoreApplication::translate(context: "QSystemSemaphore", key: "%1: permission denied").arg(a: function);
77 error = QSystemSemaphore::PermissionDenied;
78 break;
79 case EEXIST:
80 errorString = QCoreApplication::translate(context: "QSystemSemaphore", key: "%1: already exists").arg(a: function);
81 error = QSystemSemaphore::AlreadyExists;
82 break;
83 case ENOENT:
84 errorString = QCoreApplication::translate(context: "QSystemSemaphore", key: "%1: does not exist").arg(a: function);
85 error = QSystemSemaphore::NotFound;
86 break;
87 case ERANGE:
88 case ENOSPC:
89 errorString = QCoreApplication::translate(context: "QSystemSemaphore", key: "%1: out of resources").arg(a: function);
90 error = QSystemSemaphore::OutOfResources;
91 break;
92 default:
93 errorString = QCoreApplication::translate(context: "QSystemSemaphore", key: "%1: unknown error %2").arg(a: function).arg(errno);
94 error = QSystemSemaphore::UnknownError;
95#if defined QSYSTEMSEMAPHORE_DEBUG
96 qDebug() << errorString << "key" << key << "errno" << errno << EINVAL;
97#endif
98 }
99}
100
101QT_END_NAMESPACE
102
103#endif // QT_NO_SYSTEMSEMAPHORE
104

source code of qtbase/src/corelib/kernel/qsystemsemaphore_unix.cpp