KDDI Fx0 hackathon
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MurataTypeYD_Websocket_Sample_full
Websocket_Sample for MurataTypeYD
SNICInterface_mod/SNIC/CBuffer.h@1:b5ac0f971f43, 2015-03-12 (annotated)
- Committer:
- komoritan
- Date:
- Thu Mar 12 12:15:46 2015 +0000
- Revision:
- 1:b5ac0f971f43
- Parent:
- 0:14bd24b5a77f
Fixed
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
komoritan | 0:14bd24b5a77f | 1 | /* Copyright (C) 2012 mbed.org, MIT License |
komoritan | 0:14bd24b5a77f | 2 | * |
komoritan | 0:14bd24b5a77f | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
komoritan | 0:14bd24b5a77f | 4 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
komoritan | 0:14bd24b5a77f | 5 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
komoritan | 0:14bd24b5a77f | 6 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
komoritan | 0:14bd24b5a77f | 7 | * furnished to do so, subject to the following conditions: |
komoritan | 0:14bd24b5a77f | 8 | * |
komoritan | 0:14bd24b5a77f | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
komoritan | 0:14bd24b5a77f | 10 | * substantial portions of the Software. |
komoritan | 0:14bd24b5a77f | 11 | * |
komoritan | 0:14bd24b5a77f | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
komoritan | 0:14bd24b5a77f | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
komoritan | 0:14bd24b5a77f | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
komoritan | 0:14bd24b5a77f | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
komoritan | 0:14bd24b5a77f | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
komoritan | 0:14bd24b5a77f | 17 | */ |
komoritan | 0:14bd24b5a77f | 18 | |
komoritan | 0:14bd24b5a77f | 19 | #ifndef CIRCBUFFER_H_ |
komoritan | 0:14bd24b5a77f | 20 | #define CIRCBUFFER_H_ |
komoritan | 0:14bd24b5a77f | 21 | |
komoritan | 0:14bd24b5a77f | 22 | template <class T> |
komoritan | 0:14bd24b5a77f | 23 | class CircBuffer { |
komoritan | 0:14bd24b5a77f | 24 | public: |
komoritan | 0:14bd24b5a77f | 25 | CircBuffer(int length) { |
komoritan | 0:14bd24b5a77f | 26 | write = 0; |
komoritan | 0:14bd24b5a77f | 27 | read = 0; |
komoritan | 0:14bd24b5a77f | 28 | size = length + 1; |
komoritan | 0:14bd24b5a77f | 29 | buf = (T *)malloc(size * sizeof(T)); |
komoritan | 0:14bd24b5a77f | 30 | }; |
komoritan | 0:14bd24b5a77f | 31 | |
komoritan | 0:14bd24b5a77f | 32 | bool isFull() { |
komoritan | 0:14bd24b5a77f | 33 | return (((write + 1) % size) == read); |
komoritan | 0:14bd24b5a77f | 34 | }; |
komoritan | 0:14bd24b5a77f | 35 | |
komoritan | 0:14bd24b5a77f | 36 | bool isEmpty() { |
komoritan | 0:14bd24b5a77f | 37 | return (read == write); |
komoritan | 0:14bd24b5a77f | 38 | }; |
komoritan | 0:14bd24b5a77f | 39 | |
komoritan | 0:14bd24b5a77f | 40 | void queue(T k) { |
komoritan | 0:14bd24b5a77f | 41 | |
komoritan | 0:14bd24b5a77f | 42 | if (isFull()) { |
komoritan | 0:14bd24b5a77f | 43 | read++; |
komoritan | 0:14bd24b5a77f | 44 | read %= size; |
komoritan | 0:14bd24b5a77f | 45 | } |
komoritan | 0:14bd24b5a77f | 46 | buf[write++] = k; |
komoritan | 0:14bd24b5a77f | 47 | write %= size; |
komoritan | 0:14bd24b5a77f | 48 | } |
komoritan | 0:14bd24b5a77f | 49 | |
komoritan | 0:14bd24b5a77f | 50 | void flush() { |
komoritan | 0:14bd24b5a77f | 51 | read = 0; |
komoritan | 0:14bd24b5a77f | 52 | write = 0; |
komoritan | 0:14bd24b5a77f | 53 | } |
komoritan | 0:14bd24b5a77f | 54 | |
komoritan | 0:14bd24b5a77f | 55 | |
komoritan | 0:14bd24b5a77f | 56 | uint32_t available() { |
komoritan | 0:14bd24b5a77f | 57 | return (write >= read) ? write - read : size - read + write; |
komoritan | 0:14bd24b5a77f | 58 | }; |
komoritan | 0:14bd24b5a77f | 59 | |
komoritan | 0:14bd24b5a77f | 60 | bool dequeue(T * c) { |
komoritan | 0:14bd24b5a77f | 61 | bool empty = isEmpty(); |
komoritan | 0:14bd24b5a77f | 62 | if (!empty) { |
komoritan | 0:14bd24b5a77f | 63 | *c = buf[read++]; |
komoritan | 0:14bd24b5a77f | 64 | read %= size; |
komoritan | 0:14bd24b5a77f | 65 | } |
komoritan | 0:14bd24b5a77f | 66 | return(!empty); |
komoritan | 0:14bd24b5a77f | 67 | }; |
komoritan | 0:14bd24b5a77f | 68 | |
komoritan | 0:14bd24b5a77f | 69 | private: |
komoritan | 0:14bd24b5a77f | 70 | volatile uint32_t write; |
komoritan | 0:14bd24b5a77f | 71 | volatile uint32_t read; |
komoritan | 0:14bd24b5a77f | 72 | uint32_t size; |
komoritan | 0:14bd24b5a77f | 73 | T * buf; |
komoritan | 0:14bd24b5a77f | 74 | }; |
komoritan | 0:14bd24b5a77f | 75 | |
komoritan | 0:14bd24b5a77f | 76 | #endif |