Ruprecht Altenburger
/
mirror_actuator_preston
corrections altb2
Lib_Misc/ThreadFlag.cpp@3:8aa09988fa58, 2021-08-24 (annotated)
- Committer:
- altb2
- Date:
- Tue Aug 24 12:34:00 2021 +0000
- Revision:
- 3:8aa09988fa58
- Parent:
- 0:d2e117716219
corrected memory allocation in class
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
altb2 | 0:d2e117716219 | 1 | /* |
altb2 | 0:d2e117716219 | 2 | * ThreadFlag.cpp |
altb2 | 0:d2e117716219 | 3 | * Copyright (c) 2019, ZHAW |
altb2 | 0:d2e117716219 | 4 | * All rights reserved. |
altb2 | 0:d2e117716219 | 5 | * |
altb2 | 0:d2e117716219 | 6 | * Created on: 29.11.2019 |
altb2 | 0:d2e117716219 | 7 | * Author: Marcel Honegger |
altb2 | 0:d2e117716219 | 8 | */ |
altb2 | 0:d2e117716219 | 9 | |
altb2 | 0:d2e117716219 | 10 | #include "ThreadFlag.h" |
altb2 | 0:d2e117716219 | 11 | |
altb2 | 0:d2e117716219 | 12 | using namespace std; |
altb2 | 0:d2e117716219 | 13 | |
altb2 | 0:d2e117716219 | 14 | uint32_t ThreadFlag::threadFlags = 0; |
altb2 | 0:d2e117716219 | 15 | |
altb2 | 0:d2e117716219 | 16 | /** |
altb2 | 0:d2e117716219 | 17 | * Creates a signal object and assignes a unique flag. |
altb2 | 0:d2e117716219 | 18 | */ |
altb2 | 0:d2e117716219 | 19 | ThreadFlag::ThreadFlag() { |
altb2 | 0:d2e117716219 | 20 | |
altb2 | 0:d2e117716219 | 21 | mutex.lock(); |
altb2 | 0:d2e117716219 | 22 | |
altb2 | 0:d2e117716219 | 23 | uint32_t n = 0; |
altb2 | 0:d2e117716219 | 24 | while ((((1 << n) & threadFlags) > 0) && (n < 30)) n++; |
altb2 | 0:d2e117716219 | 25 | threadFlag = (1 << n); |
altb2 | 0:d2e117716219 | 26 | |
altb2 | 0:d2e117716219 | 27 | mutex.unlock(); |
altb2 | 0:d2e117716219 | 28 | } |
altb2 | 0:d2e117716219 | 29 | |
altb2 | 0:d2e117716219 | 30 | /** |
altb2 | 0:d2e117716219 | 31 | * Deletes the signal object and releases the assigned flag. |
altb2 | 0:d2e117716219 | 32 | */ |
altb2 | 0:d2e117716219 | 33 | ThreadFlag::~ThreadFlag() { |
altb2 | 0:d2e117716219 | 34 | |
altb2 | 0:d2e117716219 | 35 | mutex.lock(); |
altb2 | 0:d2e117716219 | 36 | |
altb2 | 0:d2e117716219 | 37 | threadFlags &= ~threadFlag; |
altb2 | 0:d2e117716219 | 38 | |
altb2 | 0:d2e117716219 | 39 | mutex.unlock(); |
altb2 | 0:d2e117716219 | 40 | } |
altb2 | 0:d2e117716219 | 41 | |
altb2 | 0:d2e117716219 | 42 | /** |
altb2 | 0:d2e117716219 | 43 | * Gets the assigned thread flag. |
altb2 | 0:d2e117716219 | 44 | */ |
altb2 | 0:d2e117716219 | 45 | uint32_t ThreadFlag::read() { |
altb2 | 0:d2e117716219 | 46 | |
altb2 | 0:d2e117716219 | 47 | return threadFlag; |
altb2 | 0:d2e117716219 | 48 | } |
altb2 | 0:d2e117716219 | 49 | |
altb2 | 0:d2e117716219 | 50 | /** |
altb2 | 0:d2e117716219 | 51 | * The empty operator is a shorthand notation of the <code>read()</code> method. |
altb2 | 0:d2e117716219 | 52 | */ |
altb2 | 0:d2e117716219 | 53 | ThreadFlag::operator uint32_t() { |
altb2 | 0:d2e117716219 | 54 | |
altb2 | 0:d2e117716219 | 55 | return read(); |
altb2 | 0:d2e117716219 | 56 | } |
altb2 | 0:d2e117716219 | 57 |