runguard class added

1 files changed, 32 insertions, 0 deletions

diff --git a/src/rungaurd.h b/src/rungaurd.h
new file mode 100644
index 0000000..06d45a8
--- /dev/null
+++ b/src/rungaurd.h
@@ -0,0 +1,32 @@
+#ifndef RUNGUARD_H
+#define RUNGUARD_H
+
+#include <QObject>
+#include <QSharedMemory>
+#include <QSystemSemaphore>
+
+
+class RunGuard
+{
+
+public:
+    RunGuard( const QString& key );
+    ~RunGuard();
+
+    bool isAnotherRunning();
+    bool tryToRun();
+    void release();
+
+private:
+    const QString key;
+    const QString memLockKey;
+    const QString sharedmemKey;
+
+    QSharedMemory sharedMem;
+    QSystemSemaphore memLock;
+
+    Q_DISABLE_COPY( RunGuard )
+};
+
+
+#endif // RUNGUARD_H