1 files changed, 0 insertions, 152 deletions
diff --git a/src/corelib/kernel/qsystemsemaphore_posix.cpp b/src/corelib/kernel/qsystemsemaphore_posix.cpp
deleted file mode 100644
index 8f50d2a9a8..0000000000
--- a/src/corelib/kernel/qsystemsemaphore_posix.cpp
+++ /dev/null
@@ -1,152 +0,0 @@
-// Copyright (C) 2015 Konstantin Ritt <ritt.ks@gmail.com>
-// Copyright (C) 2016 The Qt Company Ltd.
-// Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Tobias Koenig <tobias.koenig@kdab.com>
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
-
-#include "qsystemsemaphore.h"
-#include "qsystemsemaphore_p.h"
-
-#include <qdebug.h>
-#include <qfile.h>
-#include <qcoreapplication.h>
-
-#ifdef QT_POSIX_IPC
-
-#ifndef QT_NO_SYSTEMSEMAPHORE
-
-#include <sys/types.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#include "private/qcore_unix_p.h"
-
-// OpenBSD 4.2 doesn't define EIDRM, see BUGS section:
-// http://www.openbsd.org/cgi-bin/man.cgi?query=semop&manpath=OpenBSD+4.2
-#if defined(Q_OS_OPENBSD) && !defined(EIDRM)
-#define EIDRM EINVAL
-#endif
-
-QT_BEGIN_NAMESPACE
-
-using namespace Qt::StringLiterals;
-
-bool QSystemSemaphorePrivate::handle(QSystemSemaphore::AccessMode mode)
-{
-    if (semaphore != SEM_FAILED)
-        return true;  // we already have a semaphore
-
-    if (fileName.isEmpty()) {
-        errorString = QSystemSemaphore::tr("%1: key is empty").arg("QSystemSemaphore::handle"_L1);
-        error = QSystemSemaphore::KeyError;
-        return false;
-    }
-
-    const QByteArray semName = QFile::encodeName(fileName);
-
-    // Always try with O_EXCL so we know whether we created the semaphore.
-    int oflag = O_CREAT | O_EXCL;
-    for (int tryNum = 0, maxTries = 1; tryNum < maxTries; ++tryNum) {
-        do {
-            semaphore = ::sem_open(semName.constData(), oflag, 0600, initialValue);
-        } while (semaphore == SEM_FAILED && errno == EINTR);
-        if (semaphore == SEM_FAILED && errno == EEXIST) {
-            if (mode == QSystemSemaphore::Create) {
-                if (::sem_unlink(semName.constData()) == -1 && errno != ENOENT) {
-                    setErrorString("QSystemSemaphore::handle (sem_unlink)"_L1);
-                    return false;
-                }
-                // Race condition: the semaphore might be recreated before
-                // we call sem_open again, so we'll retry several times.
-                maxTries = 3;
-            } else {
-                // Race condition: if it no longer exists at the next sem_open
-                // call, we won't realize we created it, so we'll leak it later.
-                oflag &= ~O_EXCL;
-                maxTries = 2;
-            }
-        } else {
-            break;
-        }
-    }
-
-    if (semaphore == SEM_FAILED) {
-        setErrorString("QSystemSemaphore::handle"_L1);
-        return false;
-    }
-
-    createdSemaphore = (oflag & O_EXCL) != 0;
-
-    return true;
-}
-
-void QSystemSemaphorePrivate::cleanHandle()
-{
-    if (semaphore != SEM_FAILED) {
-        if (::sem_close(semaphore) == -1) {
-            setErrorString("QSystemSemaphore::cleanHandle (sem_close)"_L1);
-#if defined QSYSTEMSEMAPHORE_DEBUG
-            qDebug("QSystemSemaphore::cleanHandle sem_close failed.");
-#endif
-        }
-        semaphore = SEM_FAILED;
-    }
-
-    if (createdSemaphore) {
-        if (::sem_unlink(QFile::encodeName(fileName).constData()) == -1 && errno != ENOENT) {
-            setErrorString("QSystemSemaphore::cleanHandle (sem_unlink)"_L1);
-#if defined QSYSTEMSEMAPHORE_DEBUG
-            qDebug("QSystemSemaphore::cleanHandle sem_unlink failed.");
-#endif
-        }
-        createdSemaphore = false;
-    }
-}
-
-bool QSystemSemaphorePrivate::modifySemaphore(int count)
-{
-    if (!handle())
-        return false;
-
-    if (count > 0) {
-        int cnt = count;
-        do {
-            if (::sem_post(semaphore) == -1) {
-                setErrorString("QSystemSemaphore::modifySemaphore (sem_post)"_L1);
-#if defined QSYSTEMSEMAPHORE_DEBUG
-                qDebug("QSystemSemaphore::modify sem_post failed %d %d", count, errno);
-#endif
-                // rollback changes to preserve the SysV semaphore behavior
-                for ( ; cnt < count; ++cnt) {
-                    int res;
-                    EINTR_LOOP(res, ::sem_wait(semaphore));
-                }
-                return false;
-            }
-            --cnt;
-        } while (cnt > 0);
-    } else {
-        int res;
-        EINTR_LOOP(res, ::sem_wait(semaphore));
-        if (res == -1) {
-            // If the semaphore was removed be nice and create it and then modifySemaphore again
-            if (errno == EINVAL || errno == EIDRM) {
-                semaphore = SEM_FAILED;
-                return modifySemaphore(count);
-            }
-            setErrorString("QSystemSemaphore::modifySemaphore (sem_wait)"_L1);
-#if defined QSYSTEMSEMAPHORE_DEBUG
-            qDebug("QSystemSemaphore::modify sem_wait failed %d %d", count, errno);
-#endif
-            return false;
-        }
-    }
-
-    clearError();
-    return true;
-}
-
-QT_END_NAMESPACE
-
-#endif // QT_NO_SYSTEMSEMAPHORE
-
-#endif // QT_POSIX_IPC