diff options
Diffstat (limited to 'tests/auto/qtipc/qsharedmemory/src/qsystemlock_win.cpp')
| -rw-r--r-- | tests/auto/qtipc/qsharedmemory/src/qsystemlock_win.cpp | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/tests/auto/qtipc/qsharedmemory/src/qsystemlock_win.cpp b/tests/auto/qtipc/qsharedmemory/src/qsystemlock_win.cpp deleted file mode 100644 index 0138250..0000000 --- a/tests/auto/qtipc/qsharedmemory/src/qsystemlock_win.cpp +++ /dev/null @@ -1,183 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the test suite of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - - -#include "qsystemlock.h" -#include "qsystemlock_p.h" -#include <qdebug.h> -#include <QtCore> -QSystemLockPrivate::QSystemLockPrivate() : - semaphore(0), semaphoreLock(0), - lockCount(0), error(QSystemLock::NoError) -{ -} - -void QSystemLockPrivate::setErrorString(const QString &function) -{ - BOOL windowsError = GetLastError(); - if (windowsError == 0) - return; - errorString = function + QLatin1String(": ") - + QLatin1String("Unknown error"); - error = QSystemLock::UnknownError; - qWarning() << errorString << "key" << key << (int)windowsError << semaphore << semaphoreLock; -} - -/*! - \internal - - Setup the semaphore - */ -HANDLE QSystemLockPrivate::handle() -{ - // don't allow making handles on empty keys - if (key.isEmpty()) - return 0; - - // Create it if it doesn't already exists. - if (semaphore == 0) { - QString safeName = makeKeyFileName(); - semaphore = CreateSemaphore(0, MAX_LOCKS, MAX_LOCKS, (wchar_t*)safeName.utf16()); - - if (semaphore == 0) { - setErrorString(QLatin1String("QSystemLockPrivate::handle")); - return 0; - } - } - - if (semaphoreLock == 0) { - QString safeLockName = QSharedMemoryPrivate::makePlatformSafeKey(key + QLatin1String("lock"), QLatin1String("qipc_systemlock_")); - semaphoreLock = CreateSemaphore(0, 1, 1, (wchar_t*)safeLockName.utf16()); - - if (semaphoreLock == 0) { - setErrorString(QLatin1String("QSystemLockPrivate::handle")); - return 0; - } - } - - return semaphore; -} - -/*! - \internal - - Cleanup the semaphore - */ -void QSystemLockPrivate::cleanHandle() -{ - if (semaphore && !CloseHandle(semaphore)) - setErrorString(QLatin1String("QSystemLockPrivate::cleanHandle:")); - if (semaphoreLock && !CloseHandle(semaphoreLock)) - setErrorString(QLatin1String("QSystemLockPrivate::cleanHandle:")); - semaphore = 0; - semaphoreLock = 0; -} - -bool QSystemLockPrivate::lock(HANDLE handle, int count) -{ - if (count == 1) { - WaitForSingleObject(handle, INFINITE); - return true; - } - - int i = count; - while (i > 0) { - if (WAIT_OBJECT_0 == WaitForSingleObject(handle, 0)) { - --i; - } else { - // undo what we have done, sleep and then try again later - ReleaseSemaphore(handle, (count - i), 0); - i = count; - ReleaseSemaphore(semaphoreLock, 1, 0); - Sleep(1); - WaitForSingleObject(semaphoreLock, INFINITE); - } - } - return true; -} - -bool QSystemLockPrivate::unlock(HANDLE handle, int count) -{ - if (0 == ReleaseSemaphore(handle, count, 0)) { - setErrorString(QLatin1String("QSystemLockPrivate::unlock")); - return false; - } - return true; -} - -/*! - \internal - - modifySemaphore handles recursive behavior and modifies the semaphore. - */ -bool QSystemLockPrivate::modifySemaphore(QSystemLockPrivate::Operation op, - QSystemLock::LockMode mode) -{ - if (0 == handle()) - return false; - - if ((lockCount == 0 && op == Lock) || (lockCount > 0 && op == Unlock)) { - if (op == Unlock) { - --lockCount; - if (lockCount < 0) - qFatal("%s: lockCount must not be negative", Q_FUNC_INFO); - if (lockCount > 0) - return true; - } - - int count = (mode == QSystemLock::ReadWrite) ? MAX_LOCKS : 1; - if (op == Lock) { - lock(semaphoreLock, 1); - lock(semaphore, count); - if (count != MAX_LOCKS) unlock(semaphoreLock, 1); - lockedMode = mode; - } else { - if (count == MAX_LOCKS) unlock(semaphoreLock, 1); - unlock(semaphore, count); - } - - } - if (op == Lock) - lockCount++; - - return true; -} - |