mirror of
https://github.com/VincentWei/MiniGUI.git
synced 2026-09-30 06:23:22 +08:00
144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT NOTICE
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//
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// The following open source license statement does not apply to any
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// entity in the Exception List published by FMSoft.
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//
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// For more information, please visit:
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//
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// https://www.fmsoft.cn/exception-list
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//
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//////////////////////////////////////////////////////////////////////////////
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/*
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* This file is part of MiniGUI, a mature cross-platform windowing
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* and Graphics User Interface (GUI) support system for embedded systems
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* and smart IoT devices.
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*
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* Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
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* Copyright (C) 1998~2002, WEI Yongming
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Or,
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*
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* As this program is a library, any link to this program must follow
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* GNU General Public License version 3 (GPLv3). If you cannot accept
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* GPLv3, you need to be licensed from FMSoft.
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*
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* If you have got a commercial license of this program, please use it
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* under the terms and conditions of the commercial license.
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*
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* For more information about the commercial license, please refer to
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* <http://www.minigui.com/blog/minigui-licensing-policy/>.
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*/
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/* timer_posix.c */
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static timer_t mytimer;
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static struct sigaction old_alarm_handler;
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static void timer_handler (int sig, siginfo_t *extra, void *cruft)
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{
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int sem_value;
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int noverflow;
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#if 0
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if( (noverflow=timer_getoverrun(*(timer_t *)
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extra->si_value.sival_ptr)) != 0) {
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/*timer has overflowed -- error !*/
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printf ("timer overrun!\n");
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}
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#endif
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__mg_tick_counter++;
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// alert desktop
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AlertDesktopTimerEvent ();
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return;
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}
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BOOL mg_InitTimer (void)
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{
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struct itimerspec it;
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struct timespec resolution;
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struct sigaction sa;
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struct sigevent timer_event;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags=SA_SIGINFO; /*real-time signal*/
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sa.sa_sigaction=timer_handler; /*pointer to action*/
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if(sigaction(SIGRTMIN, &sa, &old_alarm_handler) < 0){
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perror("sigaction error");
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return FALSE;
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}
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/* first determine whether the desired clock exists */
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if (clock_getres(CLOCK_REALTIME, &resolution) < 0){
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perror("clock_getres error");
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return FALSE;
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}
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/* create a timer based upon the CLOCK_REALTIME clock */
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it.it_interval.tv_sec=0;
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/* set resolution to one-tenth of the maximum allowed */
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it.it_interval.tv_nsec=resolution.tv_nsec;
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//it.it_interval.tv_nsec=10000000;
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it.it_value=it.it_interval;
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timer_event.sigev_notify=SIGEV_SIGNAL;
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timer_event.sigev_signo= SIGRTMIN;
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timer_event.sigev_value.sival_ptr = (void *)&mytimer;
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if (timer_create(CLOCK_REALTIME, &timer_event, &mytimer) < 0){
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perror("timer create error");
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return FALSE;
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}
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/* relative timer, go off at the end of the interval*/
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if (timer_settime(mytimer, 0 , &it, NULL) < 0){
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perror("settimer");
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return FALSE;
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}
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__mg_tick_counter = 0;
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return TRUE;
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}
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void mg_TerminateTimer (void)
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{
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int i;
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timer_delete (mytimer);
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if (sigaction (SIGRTMIN, &old_alarm_handler, NULL) == -1) {
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fprintf (stderr, "KERNEL>Timer: sigaction call failed!\n");
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perror ("sigaction");
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return;
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}
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for (i=0; i<MAX_TIMERS; i++) {
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if (timerstr[i] != NULL)
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free ( timerstr[i] );
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timerstr[i] = NULL;
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}
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}
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