Library that uses mbed-os
Diff: Signal.cpp
- Revision:
- 0:ff3de4aaacf8
diff -r 000000000000 -r ff3de4aaacf8 Signal.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Signal.cpp Wed Mar 06 14:19:23 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(); +} +