forked from metin2/server
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
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/*
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* Filename: heart.c
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* Description: fps <EFBFBD><EFBFBD> <EFBFBD>ѹ<EFBFBD><EFBFBD><EFBFBD> ȣ<EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD> "<EFBFBD><EFBFBD><EFBFBD><EFBFBD>" <EFBFBD>̴<EFBFBD>.
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*
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* Author: <EFBFBD><EFBFBD><EFBFBD><EFBFBD> aka. Cronan
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*/
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#define __LIBTHECORE__
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#include "stdafx.h"
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extern volatile int num_events_called;
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LPHEART heart_new(int opt_usec, HEARTFUNC func)
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{
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LPHEART ht;
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if (!func)
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{
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sys_err("no function defined");
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return NULL;
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}
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CREATE(ht, HEART, 1);
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ht->func = func;
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ht->opt_time.tv_sec = 0;
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ht->opt_time.tv_usec = opt_usec;
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ht->passes_per_sec = 1000000 / opt_usec;
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gettimeofday(&ht->last_time, (struct timezone *) 0);
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gettimeofday(&ht->before_sleep, (struct timezone *) 0);
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return (ht);
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}
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void heart_delete(LPHEART ht)
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{
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free(ht);
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}
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int heart_idle(LPHEART ht)
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{
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struct timeval now, process_time, timeout, temp_time;
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int missed_pulse;
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gettimeofday(&ht->before_sleep, (struct timezone *) 0);
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process_time = *timediff(&ht->before_sleep, &ht->last_time);
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/*
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* If we were asleep for more than one pass, count missed pulses and sleep
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* until we're resynchronized with the next upcoming pulse.
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*/
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if (process_time.tv_sec == 0 && process_time.tv_usec < ht->opt_time.tv_usec)
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{
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missed_pulse = 0;
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}
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else
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{
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missed_pulse = process_time.tv_sec * ht->passes_per_sec;
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missed_pulse += process_time.tv_usec / ht->opt_time.tv_usec;
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}
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// <20>ٺ<EFBFBD><D9BA><EFBFBD> pulse<73><65> <20><><EFBFBD>ƴµ<C6B4> <20><> <20>ð<EFBFBD><C3B0><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>...
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// <20><EFBFBD> fps <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Ʋ<><C6B2><EFBFBD><EFBFBD><EFBFBD>ִµ<D6B4>, <20><>Ȯ<EFBFBD><C8AE> <20><><EFBFBD>ߴ<EFBFBD> <20><> <20>߿<EFBFBD><DFBF><EFBFBD><EFBFBD><EFBFBD> <20>ʾ<EFBFBD>.
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if (missed_pulse > 0)
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{
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gettimeofday(&ht->last_time, (struct timezone *) 0);
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}
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else
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{
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/* Calculate the time we should wake up */
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temp_time = *timediff(&ht->opt_time, &process_time);
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ht->last_time = *timeadd(&ht->before_sleep, &temp_time);
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/* Now keep sleeping until that time has come */
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gettimeofday(&now, (struct timezone *) 0);
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timeout = *timediff(&ht->last_time, &now);
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thecore_sleep(&timeout);
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}
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++missed_pulse;
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if (missed_pulse <= 0)
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{
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sys_err("missed_pulse is not positive! (%d)", missed_pulse);
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missed_pulse = 1;
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}
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if (missed_pulse > (30 * ht->passes_per_sec))
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{
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sys_err("losing %d seconds. (lag occured)", missed_pulse / ht->passes_per_sec);
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missed_pulse = 30 * ht->passes_per_sec;
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}
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return missed_pulse;
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}
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