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PES2_mbed_os_6
Diff: ThreadFlag.cpp
- Revision:
- 0:5d4d21d56334
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ThreadFlag.cpp Fri Mar 12 13:04:33 2021 +0000 @@ -0,0 +1,54 @@ +/* + * ThreadFlag.cpp + * Copyright (c) 2020, ZHAW + * All rights reserved. + */ + +#include "ThreadFlag.h" + +using namespace std; + +unsigned int ThreadFlag::threadFlags = 0; + +/** + * Creates a signal object and assignes a unique flag. + */ +ThreadFlag::ThreadFlag() { + + mutex.lock(); + + unsigned int n = 0; + while ((((1 << n) & threadFlags) > 0) && (n < 30)) n++; + threadFlag = (1 << n); + + mutex.unlock(); +} + +/** + * Deletes the signal object and releases the assigned flag. + */ +ThreadFlag::~ThreadFlag() { + + mutex.lock(); + + threadFlags &= ~threadFlag; + + mutex.unlock(); +} + +/** + * Gets the assigned thread flag. + */ +unsigned int ThreadFlag::read() { + + return threadFlag; +} + +/** + * The empty operator is a shorthand notation of the <code>read()</code> method. + */ +ThreadFlag::operator unsigned int() { + + return read(); +} +