mirror of https://github.com/qmk/qmk_firmware
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
|
/*
|
||
|
|
The MIT License (MIT)
|
||
|
|
|
||
|
|
Copyright (c) 2016 Fred Sundvik
|
||
|
|
|
||
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
of this software and associated documentation files (the "Software"), to deal
|
||
|
|
in the Software without restriction, including without limitation the rights
|
||
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
copies of the Software, and to permit persons to whom the Software is
|
||
|
|
furnished to do so, subject to the following conditions:
|
||
|
|
|
||
|
|
The above copyright notice and this permission notice shall be included in all
|
||
|
|
copies or substantial portions of the Software.
|
||
|
|
|
||
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef SERIAL_LINK_TRIPLE_BUFFERED_OBJECT_H
|
||
|
|
#define SERIAL_LINK_TRIPLE_BUFFERED_OBJECT_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint8_t state;
|
||
|
|
uint8_t buffer[] __attribute__((aligned(4)));
|
||
|
|
}triple_buffer_object_t;
|
||
|
|
|
||
|
|
void triple_buffer_init(triple_buffer_object_t* object);
|
||
|
|
|
||
|
|
#define triple_buffer_begin_write(object) \
|
||
|
|
(typeof(*object.buffer[0])*)triple_buffer_begin_write_internal(sizeof(*object.buffer[0]), (triple_buffer_object_t*)object)
|
||
|
|
|
||
|
|
#define triple_buffer_end_write(object) \
|
||
|
|
triple_buffer_end_write_internal((triple_buffer_object_t*)object)
|
||
|
|
|
||
|
|
#define triple_buffer_read(object) \
|
||
|
|
(typeof(*object.buffer[0])*)triple_buffer_read_internal(sizeof(*object.buffer[0]), (triple_buffer_object_t*)object)
|
||
|
|
|
||
|
|
void* triple_buffer_begin_write_internal(uint16_t object_size, triple_buffer_object_t* object);
|
||
|
|
void triple_buffer_end_write_internal(triple_buffer_object_t* object);
|
||
|
|
void* triple_buffer_read_internal(uint16_t object_size, triple_buffer_object_t* object);
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|