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rdevent.h
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rdevent.h
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/*
* librd - Rapid Development C library
*
* Copyright (c) 2012-2013, Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "rdthread.h"
#define rd_thread_event_f(F) void (F) (void *ptr)
typedef struct rd_thread_event_s {
rd_thread_event_f(*rte_callback);
void *rte_ptr;
} rd_thread_event_t;
/**
* Enqueue event (callback call) on thread 'rdt'.
* Requires 'rdt' to call rd_thread_dispatch().
*/
static void rd_thread_event_add (rd_thread_t *rdt,
rd_thread_event_f(*callback),
void *ptr) RD_UNUSED;
static void rd_thread_event_add (rd_thread_t *rdt,
rd_thread_event_f(*callback),
void *ptr) {
rd_thread_event_t *rte = malloc(sizeof(*rte));
rte->rte_callback = callback;
rte->rte_ptr = ptr;
rd_fifoq_add(&rdt->rdt_eventq, rte);
}
/**
* Convenience function to enqueue a call to function 'cb' on thread 'rdt'.
* Depending on the value of 'argcnt' (0..4) 'cb' may be one of:
*
* argcnt | prototype
* -------+--------------------------------------------------------------
* 0 | void (*cb) (void)
* 1 | void (*cb) (void *arg1)
* 2 | void (*cb) (void *arg1, void *arg2)
* 3 | void (*cb) (void *arg1, void *arg2, void *arg3)
* 4 | void (*cb) (void *arg1, void *arg2, void *arg3, void *arg4)
*/
void rd_thread_func_call (rd_thread_t *rdt, void *cb, int argcnt, void **args);
#define rd_thread_func_call0(rdt,cb) \
rd_thread_func_call(rdt,cb,0,NULL)
#define rd_thread_func_call1(rdt,cb,arg1) \
rd_thread_func_call(rdt, cb, 1, ((void *[]){ arg1 }))
#define rd_thread_func_call2(rdt,cb,arg1,arg2) \
rd_thread_func_call(rdt, cb, 2, ((void *[]){ arg1, arg2 }))
#define rd_thread_func_call3(rdt,cb,arg1,arg2,arg3) \
rd_thread_func_call(rdt, cb, 3, ((void *[]){ arg1, arg2, arg3 }))
#define rd_thread_func_call4(rdt,cb,arg1,arg2,arg3,arg4) \
rd_thread_func_call(rdt, cb, 4, ((void *[]){ arg1, arg2, arg3, arg4 }))
/**
* Calls the callback and destroys the event.
*/
static void rd_thread_event_call (rd_thread_event_t *rte) RD_UNUSED;
static void rd_thread_event_call (rd_thread_event_t *rte) {
rte->rte_callback(rte->rte_ptr);
free(rte);
}