AlbaniGang
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Rome_P3
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Dependencies: mbed
ThreadFlag.cpp@1:bba0ec7e075a, 2020-04-08 (annotated)
- Committer:
- stollpa1
- Date:
- Wed Apr 08 09:13:33 2020 +0000
- Revision:
- 1:bba0ec7e075a
P4 init;
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| stollpa1 | 1:bba0ec7e075a | 1 | /* |
| stollpa1 | 1:bba0ec7e075a | 2 | * ThreadFlag.cpp |
| stollpa1 | 1:bba0ec7e075a | 3 | * Copyright (c) 2020, ZHAW |
| stollpa1 | 1:bba0ec7e075a | 4 | * All rights reserved. |
| stollpa1 | 1:bba0ec7e075a | 5 | */ |
| stollpa1 | 1:bba0ec7e075a | 6 | |
| stollpa1 | 1:bba0ec7e075a | 7 | #include "ThreadFlag.h" |
| stollpa1 | 1:bba0ec7e075a | 8 | |
| stollpa1 | 1:bba0ec7e075a | 9 | using namespace std; |
| stollpa1 | 1:bba0ec7e075a | 10 | |
| stollpa1 | 1:bba0ec7e075a | 11 | unsigned int ThreadFlag::threadFlags = 0; |
| stollpa1 | 1:bba0ec7e075a | 12 | |
| stollpa1 | 1:bba0ec7e075a | 13 | /** |
| stollpa1 | 1:bba0ec7e075a | 14 | * Creates a signal object and assignes a unique flag. |
| stollpa1 | 1:bba0ec7e075a | 15 | */ |
| stollpa1 | 1:bba0ec7e075a | 16 | ThreadFlag::ThreadFlag() { |
| stollpa1 | 1:bba0ec7e075a | 17 | |
| stollpa1 | 1:bba0ec7e075a | 18 | mutex.lock(); |
| stollpa1 | 1:bba0ec7e075a | 19 | |
| stollpa1 | 1:bba0ec7e075a | 20 | unsigned int n = 0; |
| stollpa1 | 1:bba0ec7e075a | 21 | while ((((1 << n) & threadFlags) > 0) && (n < 30)) n++; |
| stollpa1 | 1:bba0ec7e075a | 22 | threadFlag = (1 << n); |
| stollpa1 | 1:bba0ec7e075a | 23 | |
| stollpa1 | 1:bba0ec7e075a | 24 | mutex.unlock(); |
| stollpa1 | 1:bba0ec7e075a | 25 | } |
| stollpa1 | 1:bba0ec7e075a | 26 | |
| stollpa1 | 1:bba0ec7e075a | 27 | /** |
| stollpa1 | 1:bba0ec7e075a | 28 | * Deletes the signal object and releases the assigned flag. |
| stollpa1 | 1:bba0ec7e075a | 29 | */ |
| stollpa1 | 1:bba0ec7e075a | 30 | ThreadFlag::~ThreadFlag() { |
| stollpa1 | 1:bba0ec7e075a | 31 | |
| stollpa1 | 1:bba0ec7e075a | 32 | mutex.lock(); |
| stollpa1 | 1:bba0ec7e075a | 33 | |
| stollpa1 | 1:bba0ec7e075a | 34 | threadFlags &= ~threadFlag; |
| stollpa1 | 1:bba0ec7e075a | 35 | |
| stollpa1 | 1:bba0ec7e075a | 36 | mutex.unlock(); |
| stollpa1 | 1:bba0ec7e075a | 37 | } |
| stollpa1 | 1:bba0ec7e075a | 38 | |
| stollpa1 | 1:bba0ec7e075a | 39 | /** |
| stollpa1 | 1:bba0ec7e075a | 40 | * Gets the assigned thread flag. |
| stollpa1 | 1:bba0ec7e075a | 41 | */ |
| stollpa1 | 1:bba0ec7e075a | 42 | unsigned int ThreadFlag::read() { |
| stollpa1 | 1:bba0ec7e075a | 43 | |
| stollpa1 | 1:bba0ec7e075a | 44 | return threadFlag; |
| stollpa1 | 1:bba0ec7e075a | 45 | } |
| stollpa1 | 1:bba0ec7e075a | 46 | |
| stollpa1 | 1:bba0ec7e075a | 47 | /** |
| stollpa1 | 1:bba0ec7e075a | 48 | * The empty operator is a shorthand notation of the <code>read()</code> method. |
| stollpa1 | 1:bba0ec7e075a | 49 | */ |
| stollpa1 | 1:bba0ec7e075a | 50 | ThreadFlag::operator unsigned int() { |
| stollpa1 | 1:bba0ec7e075a | 51 | |
| stollpa1 | 1:bba0ec7e075a | 52 | return read(); |
| stollpa1 | 1:bba0ec7e075a | 53 | } |
| stollpa1 | 1:bba0ec7e075a | 54 |