- Auto reconnect - Added is_associated
Fork of WiflyInterface by
Wifly/CBuffer.h@1:fb4494783863, 2012-08-24 (annotated)
- Committer:
- samux
- Date:
- Fri Aug 24 13:48:36 2012 +0000
- Revision:
- 1:fb4494783863
first commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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samux | 1:fb4494783863 | 1 | /* Copyright (C) 2012 mbed.org, MIT License |
samux | 1:fb4494783863 | 2 | * |
samux | 1:fb4494783863 | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
samux | 1:fb4494783863 | 4 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
samux | 1:fb4494783863 | 5 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
samux | 1:fb4494783863 | 6 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
samux | 1:fb4494783863 | 7 | * furnished to do so, subject to the following conditions: |
samux | 1:fb4494783863 | 8 | * |
samux | 1:fb4494783863 | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
samux | 1:fb4494783863 | 10 | * substantial portions of the Software. |
samux | 1:fb4494783863 | 11 | * |
samux | 1:fb4494783863 | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
samux | 1:fb4494783863 | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
samux | 1:fb4494783863 | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
samux | 1:fb4494783863 | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
samux | 1:fb4494783863 | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
samux | 1:fb4494783863 | 17 | */ |
samux | 1:fb4494783863 | 18 | |
samux | 1:fb4494783863 | 19 | #ifndef CIRCBUFFER_H_ |
samux | 1:fb4494783863 | 20 | #define CIRCBUFFER_H_ |
samux | 1:fb4494783863 | 21 | |
samux | 1:fb4494783863 | 22 | template <class T> |
samux | 1:fb4494783863 | 23 | class CircBuffer { |
samux | 1:fb4494783863 | 24 | public: |
samux | 1:fb4494783863 | 25 | CircBuffer(int length) { |
samux | 1:fb4494783863 | 26 | write = 0; |
samux | 1:fb4494783863 | 27 | read = 0; |
samux | 1:fb4494783863 | 28 | size = length + 1; |
samux | 1:fb4494783863 | 29 | buf = (T *)malloc(size * sizeof(T)); |
samux | 1:fb4494783863 | 30 | }; |
samux | 1:fb4494783863 | 31 | |
samux | 1:fb4494783863 | 32 | bool isFull() { |
samux | 1:fb4494783863 | 33 | return (((write + 1) % size) == read); |
samux | 1:fb4494783863 | 34 | }; |
samux | 1:fb4494783863 | 35 | |
samux | 1:fb4494783863 | 36 | bool isEmpty() { |
samux | 1:fb4494783863 | 37 | return (read == write); |
samux | 1:fb4494783863 | 38 | }; |
samux | 1:fb4494783863 | 39 | |
samux | 1:fb4494783863 | 40 | void queue(T k) { |
samux | 1:fb4494783863 | 41 | if (isFull()) { |
samux | 1:fb4494783863 | 42 | read++; |
samux | 1:fb4494783863 | 43 | read %= size; |
samux | 1:fb4494783863 | 44 | } |
samux | 1:fb4494783863 | 45 | buf[write++] = k; |
samux | 1:fb4494783863 | 46 | write %= size; |
samux | 1:fb4494783863 | 47 | } |
samux | 1:fb4494783863 | 48 | |
samux | 1:fb4494783863 | 49 | void flush() { |
samux | 1:fb4494783863 | 50 | read = 0; |
samux | 1:fb4494783863 | 51 | write = 0; |
samux | 1:fb4494783863 | 52 | } |
samux | 1:fb4494783863 | 53 | |
samux | 1:fb4494783863 | 54 | |
samux | 1:fb4494783863 | 55 | uint32_t available() { |
samux | 1:fb4494783863 | 56 | return (write >= read) ? write - read : size - read + write; |
samux | 1:fb4494783863 | 57 | }; |
samux | 1:fb4494783863 | 58 | |
samux | 1:fb4494783863 | 59 | bool dequeue(T * c) { |
samux | 1:fb4494783863 | 60 | bool empty = isEmpty(); |
samux | 1:fb4494783863 | 61 | if (!empty) { |
samux | 1:fb4494783863 | 62 | *c = buf[read++]; |
samux | 1:fb4494783863 | 63 | read %= size; |
samux | 1:fb4494783863 | 64 | } |
samux | 1:fb4494783863 | 65 | return(!empty); |
samux | 1:fb4494783863 | 66 | }; |
samux | 1:fb4494783863 | 67 | |
samux | 1:fb4494783863 | 68 | private: |
samux | 1:fb4494783863 | 69 | volatile uint32_t write; |
samux | 1:fb4494783863 | 70 | volatile uint32_t read; |
samux | 1:fb4494783863 | 71 | uint32_t size; |
samux | 1:fb4494783863 | 72 | T * buf; |
samux | 1:fb4494783863 | 73 | }; |
samux | 1:fb4494783863 | 74 | |
samux | 1:fb4494783863 | 75 | #endif |