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126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
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* Copyright (C) 2019 Kaspar Schleiser <kaspar@schleiser.de>
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* 2018 Freie Universität Berlin
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* 2020 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup sys_event
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* @{
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*
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* @file
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* @brief Event Loop Thread implementation
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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*
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* @}
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*/
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#include "thread.h"
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#include "event.h"
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#include "event/thread.h"
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static void *_handler(void *event_queue)
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{
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event_queue_claim(event_queue);
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event_loop(event_queue);
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/* should be never reached */
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return NULL;
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}
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void event_thread_init(event_queue_t *queue, char *stack, size_t stack_size,
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unsigned priority)
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{
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/* For the auto_init use case, this will be called before main gets
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* started. main might already use the queues, so they need to be
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* initialized at that point.
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*
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* They will be claimed within the handler thread.
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*/
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event_queue_init_detached(queue);
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thread_create(stack, stack_size, priority, 0, _handler, queue, "event");
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}
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#ifndef EVENT_THREAD_STACKSIZE_DEFAULT
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# ifdef ISR_STACKSIZE
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# define EVENT_THREAD_STACKSIZE_DEFAULT ISR_STACKSIZE
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# else
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# define EVENT_THREAD_STACKSIZE_DEFAULT THREAD_STACKSIZE_SMALL
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# endif
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#endif
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#ifndef EVENT_THREAD_HIGHEST_STACKSIZE
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#define EVENT_THREAD_HIGHEST_STACKSIZE EVENT_THREAD_STACKSIZE_DEFAULT
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#endif
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#ifndef EVENT_THREAD_HIGHEST_PRIO
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#define EVENT_THREAD_HIGHEST_PRIO (0)
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#endif
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#ifndef EVENT_THREAD_MEDIUM_STACKSIZE
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#define EVENT_THREAD_MEDIUM_STACKSIZE EVENT_THREAD_STACKSIZE_DEFAULT
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#endif
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#ifndef EVENT_THREAD_MEDIUM_PRIO
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#define EVENT_THREAD_MEDIUM_PRIO (THREAD_PRIORITY_MAIN - 1)
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#endif
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#ifndef EVENT_THREAD_LOWEST_STACKSIZE
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#define EVENT_THREAD_LOWEST_STACKSIZE EVENT_THREAD_STACKSIZE_DEFAULT
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#endif
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#ifndef EVENT_THREAD_LOWEST_PRIO
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#define EVENT_THREAD_LOWEST_PRIO (THREAD_PRIORITY_IDLE - 1)
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#endif
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#ifdef MODULE_EVENT_THREAD_HIGHEST
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event_queue_t event_queue_highest;
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static char _evq_highest_stack[EVENT_THREAD_HIGHEST_STACKSIZE];
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#endif
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#ifdef MODULE_EVENT_THREAD_MEDIUM
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event_queue_t event_queue_medium;
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static char _evq_medium_stack[EVENT_THREAD_MEDIUM_STACKSIZE];
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#endif
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#ifdef MODULE_EVENT_THREAD_LOWEST
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event_queue_t event_queue_lowest;
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static char _evq_lowest_stack[EVENT_THREAD_LOWEST_STACKSIZE];
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#endif
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typedef struct {
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event_queue_t *queue;
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char *stack;
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size_t stack_size;
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unsigned priority;
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} event_threads_t;
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const event_threads_t _event_threads[] = {
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#ifdef MODULE_EVENT_THREAD_HIGHEST
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{ &event_queue_highest, _evq_highest_stack, sizeof(_evq_highest_stack),
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EVENT_THREAD_HIGHEST_PRIO },
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#endif
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#ifdef MODULE_EVENT_THREAD_MEDIUM
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{ &event_queue_medium, _evq_medium_stack, sizeof(_evq_medium_stack),
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EVENT_THREAD_MEDIUM_PRIO },
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#endif
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#ifdef MODULE_EVENT_THREAD_LOWEST
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{ &event_queue_lowest, _evq_lowest_stack, sizeof(_evq_lowest_stack),
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EVENT_THREAD_LOWEST_PRIO },
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#endif
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};
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void auto_init_event_thread(void)
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{
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for (unsigned i = 0; i < ARRAY_SIZE(_event_threads); i++) {
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event_thread_init(_event_threads[i].queue,
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_event_threads[i].stack, _event_threads[i].stack_size,
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_event_threads[i].priority);
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}
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}
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