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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QCoreApplication>
#include <QDebug>
#include <QStringList>
#include <QSystemSemaphore>
int acquire(const QNativeIpcKey &key, int count = 1)
{
QSystemSemaphore sem(key);
for (int i = 0; i < count; ++i) {
if (!sem.acquire()) {
qWarning() << "Could not acquire" << sem.key();
return EXIT_FAILURE;
}
}
qDebug("done aquiring");
return EXIT_SUCCESS;
}
int release(const QNativeIpcKey &key)
{
QSystemSemaphore sem(key);
if (!sem.release()) {
qWarning() << "Could not release" << sem.key();
return EXIT_FAILURE;
}
qDebug("done releasing");
return EXIT_SUCCESS;
}
int acquirerelease(const QNativeIpcKey &key)
{
QSystemSemaphore sem(key);
if (!sem.acquire()) {
qWarning() << "Could not acquire" << sem.key();
return EXIT_FAILURE;
}
if (!sem.release()) {
qWarning() << "Could not release" << sem.key();
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QStringList arguments = app.arguments();
// binary name is not used here
arguments.takeFirst();
if (arguments.size() < 2) {
fprintf(stderr,
"Usage: %s <acquire|release|acquirerelease> <key> [other args...]\n",
argv[0]);
return EXIT_FAILURE;
}
QString function = arguments.takeFirst();
QNativeIpcKey key = QNativeIpcKey::fromString(arguments.takeFirst());
if (function == QLatin1String("acquire")) {
int count = 1;
bool ok = true;
if (arguments.size())
count = arguments.takeFirst().toInt(&ok);
if (!ok)
count = 1;
return acquire(key, count);
} else if (function == QLatin1String("release")) {
return release(key);
} else if (function == QLatin1String("acquirerelease")) {
return acquirerelease(key);
} else {
qWarning() << "Unknown function" << function;
}
return EXIT_SUCCESS;
}
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