347fa1a7a5
This cuts down on the boilerplate especially with ncd_make_boolean().
171 lines
4.9 KiB
C
171 lines
4.9 KiB
C
/**
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* @file sleep.c
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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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 are met:
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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 author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* Synopsis:
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* sleep(string ms_start [, string ms_stop])
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*
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* Description:
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* On init, sleeps 'ms_start' milliseconds then goes up, or goes up immediately
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* if 'ms_start' is an empty string.
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* On deinit, sleeps 'ms_stop' milliseconds then dies, or dies immediately if
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* 'ms_stop' is an empty string or is not provided. If a deinit is requested while
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* the init sleep is still in progress, the init sleep is aborted and the deinit
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* sleep is started immediately (if any).
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <ncd/module_common.h>
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#include <generated/blog_channel_ncd_sleep.h>
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struct instance {
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NCDModuleInst *i;
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btime_t ms_stop;
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BTimer timer;
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int dying;
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};
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static void instance_free (struct instance *o);
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static void timer_handler (void *vo)
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{
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struct instance *o = vo;
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if (!o->dying) {
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// signal up
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NCDModuleInst_Backend_Up(o->i);
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} else {
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// die
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instance_free(o);
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}
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}
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static void func_new (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
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{
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struct instance *o = vo;
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o->i = i;
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// check arguments
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NCDValRef ms_start_arg;
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NCDValRef ms_stop_arg = NCDVal_NewInvalid();
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if (!NCDVal_ListRead(params->args, 1, &ms_start_arg) &&
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!NCDVal_ListRead(params->args, 2, &ms_start_arg, &ms_stop_arg)) {
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ModuleLog(o->i, BLOG_ERROR, "wrong arity");
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goto fail0;
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}
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uintmax_t ms;
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btime_t ms_start;
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if (NCDVal_IsString(ms_start_arg) && NCDVal_StringEqualsId(ms_start_arg, NCD_STRING_EMPTY)) {
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ms_start = -1;
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} else {
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if (!ncd_read_uintmax(ms_start_arg, &ms) || ms > INT64_MAX) {
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ModuleLog(o->i, BLOG_ERROR, "wrong start time");
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goto fail0;
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}
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ms_start = ms;
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}
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if (NCDVal_IsInvalid(ms_stop_arg) || (NCDVal_IsString(ms_stop_arg) && NCDVal_StringEqualsId(ms_stop_arg, NCD_STRING_EMPTY))) {
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o->ms_stop = -1;
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} else {
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if (!ncd_read_uintmax(ms_stop_arg, &ms) || ms > INT64_MAX) {
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ModuleLog(o->i, BLOG_ERROR, "wrong stop time");
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goto fail0;
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}
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o->ms_stop = ms;
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}
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// init timer
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BTimer_Init(&o->timer, 0, timer_handler, o);
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// set not dying
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o->dying = 0;
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if (ms_start < 0) {
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// go up
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NCDModuleInst_Backend_Up(i);
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} else {
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// set timer
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BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, ms_start);
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}
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return;
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fail0:
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NCDModuleInst_Backend_DeadError(i);
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}
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void instance_free (struct instance *o)
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{
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// free timer
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BReactor_RemoveTimer(o->i->params->iparams->reactor, &o->timer);
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NCDModuleInst_Backend_Dead(o->i);
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}
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static void func_die (void *vo)
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{
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struct instance *o = vo;
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if (o->ms_stop < 0) {
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// die immediately
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instance_free(o);
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return;
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}
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// set dying
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o->dying = 1;
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// set timer
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BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, o->ms_stop);
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}
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static struct NCDModule modules[] = {
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{
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.type = "sleep",
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.func_new2 = func_new,
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.func_die = func_die,
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.alloc_size = sizeof(struct instance)
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}, {
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.type = NULL
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}
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};
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const struct NCDModuleGroup ncdmodule_sleep = {
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.modules = modules
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};
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