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140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*
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* Copyright (C) 2009 by Matthias Ringwald
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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* run_loop.h
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*
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* Created by Matthias Ringwald on 6/6/09.
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*/
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#pragma once
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#include "linked_list.h"
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#define HAVE_TIME
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#include <stdint.h>
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#ifdef HAVE_TIME
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#include <sys/time.h>
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#endif
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#if defined __cplusplus
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extern "C" {
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#endif
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typedef enum
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{
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RUN_LOOP_POSIX = 1,
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RUN_LOOP_COCOA,
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RUN_LOOP_EMBEDDED
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} RUN_LOOP_TYPE;
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typedef struct data_source
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{
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linked_item_t item;
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/* File descriptor to watch or 0. */
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int fd;
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int (*process)(struct data_source *ds);
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} data_source_t;
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typedef struct timer
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{
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linked_item_t item;
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#ifdef HAVE_TIME
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/* Next timeout. */
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struct timeval timeout;
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#endif
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#ifdef HAVE_TICK
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/* Timeout in system ticks. */
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uint32_t timeout;
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#endif
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void (*process)(struct timer *ts);
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} timer_source_t;
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/* Set timer based on current time in milliseconds. */
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void run_loop_set_timer(timer_source_t *a, uint32_t timeout_in_ms);
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/* Set callback that will be executed when timer expires. */
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void run_loop_set_timer_handler(timer_source_t *ts,
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void (*process)(timer_source_t *_ts));
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/* Add timer source. */
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void run_loop_add_timer(timer_source_t *timer);
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/* Remove timer source. */
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int run_loop_remove_timer(timer_source_t *timer);
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/* Init must be called before any other run_loop call.
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* Use RUN_LOOP_EMBEDDED for embedded devices.
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*/
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void run_loop_init(RUN_LOOP_TYPE type);
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/* Set data source callback. */
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void run_loop_set_data_source_handler(data_source_t *ds,
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int (*process)(data_source_t *_ds));
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/* Add data source. */
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void run_loop_add_data_source(data_source_t *dataSource);
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/* Remove data source. */
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int run_loop_remove_data_source(data_source_t *dataSource);
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/* Execute configured run loop.
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* This function does not return. */
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void run_loop_execute(void);
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/* Hack to fix HCI timer handling. */
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#ifdef HAVE_TICK
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/* Sets how many milliseconds has one tick. */
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uint32_t embedded_ticks_for_ms(uint32_t time_in_ms);
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/* Queries the current time in ticks. */
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uint32_t embedded_get_ticks(void);
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#endif
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#ifdef EMBEDDED
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/* Sets an internal flag that is checked in the critical section
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* just before entering sleep mode. Has to be called by the interupt
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* handler of a data source to signal the run loop that a new data
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* is available.
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*/
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void embedded_trigger(void);
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#endif
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#if defined __cplusplus
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}
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#endif
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