Diff: Signal.cpp

Revision:

0:3312872854c4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Signal.cpp	Mon Mar 04 11:03:51 2019 +0000
@@ -0,0 +1,54 @@
+/*
+ * Signal.cpp
+ * Copyright (c) 2017, ZHAW
+ * All rights reserved.
+ */
+
+#include "Signal.h"
+
+using namespace std;
+
+int32_t Signal::signals = 0;
+
+/**
+ * Creates a signal object and assignes a unique flag.
+ */
+Signal::Signal() {
+    
+    mutex.lock();
+    
+    int32_t n = 0;
+    while ((((1 << n) & signals) > 0) && (n < 30)) n++;
+    signal = (1 << n);
+    
+    mutex.unlock();
+}
+
+/**
+ * Deletes the signal object and releases the assigned flag.
+ */
+Signal::~Signal() {
+    
+    mutex.lock();
+    
+    signals &= ~signal;
+    
+    mutex.unlock();
+}
+
+/**
+ * Gets the assigned signal flag.
+ */
+int32_t Signal::read() {
+    
+    return signal;
+}
+
+/**
+ * The empty operator is a shorthand notation of the <code>read()</code> method.
+ */
+Signal::operator int32_t() {
+    
+    return read();
+}
+