/* * $Id$ * * Copyright (C) 2001-2003 Fhg Fokus * * This file is part of ser, a free SIP server. * * ser is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version * * For a license to use the ser software under conditions * other than those described here, or to purchase support for this * software, please contact iptel.org by e-mail at the following addresses: * info@iptel.org * * ser is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* History: * -------- * 2003-03-19 replaced all the mallocs/frees w/ pkg_malloc/pkg_free (andrei) */ #include "timer.h" #include "dprint.h" #include "error.h" #include "config.h" #include "mem/mem.h" #ifdef SHM_MEM #include "mem/shm_mem.h" #endif #include <stdlib.h> struct sr_timer* timer_list=0; static int* jiffies=0; static int timer_id=0; /* ret 0 on success, <0 on error*/ int init_timer() { #ifdef SHM_MEM jiffies=shm_malloc(sizeof(int)); #else /* in this case get_ticks won't work! */ LOG(L_INFO, "WARNING: no shared memory support compiled in" " get_ticks won't work\n"); jiffies=pkg_malloc(sizeof(int)); #endif if (jiffies==0){ LOG(L_CRIT, "ERROR: init_timer: could not init jiffies\n"); return E_OUT_OF_MEM; } *jiffies=0; return 0; } void destroy_timer() { if (jiffies){ #ifdef SHM_MEM shm_free(jiffies); jiffies=0; #else pkg_free(jiffies); jiffies=0; #endif } } /*register a periodic timer; * ret: <0 on error*/ int register_timer(timer_function f, void* param, unsigned int interval) { struct sr_timer* t; t=pkg_malloc(sizeof(struct sr_timer)); if (t==0){ LOG(L_ERR, "ERROR: register_timer: out of memory\n"); goto error; } t->id=timer_id++; t->timer_f=f; t->t_param=param; t->interval=interval; t->expires=*jiffies+interval; /* insert it into the list*/ t->next=timer_list; timer_list=t; return t->id; error: return E_OUT_OF_MEM; } void timer_ticker() { struct sr_timer* t; unsigned int prev_jiffies; prev_jiffies=*jiffies; *jiffies+=TIMER_TICK; /* test for overflow (if tick= 1s =>overflow in 136 years)*/ if (*jiffies<prev_jiffies){ /*force expire & update every timer, a little buggy but it * happens once in 136 years :) */ for(t=timer_list;t;t=t->next){ t->expires=*jiffies+t->interval; t->timer_f(*jiffies, t->t_param); } return; } for (t=timer_list;t; t=t->next){ if (*jiffies>=t->expires){ t->expires=*jiffies+t->interval; t->timer_f(*jiffies, t->t_param); } } } unsigned int get_ticks() { if (jiffies==0){ LOG(L_CRIT, "BUG: get_ticks: jiffies not intialized\n"); return 0; } #ifndef SHM_MEM LOG(L_CRIT, "WARNING: get_ticks: no shared memory support compiled in" ", returning 0 (probably wrong)"); return 0; #endif return *jiffies; }