mirror of
https://github.com/eddyem/BTA_utils.git
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76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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* geany_encoding=koi8-r
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* tmout.c
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*
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* Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
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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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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#include <stdio.h>
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#include <pthread.h>
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#include <errno.h>
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#include <sys/select.h>
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#include <signal.h>
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#include "usefull_macros.h"
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char indi[] = "|/-\\";
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volatile int tmout = 0;
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static void *tmout_thread(void *buf){
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int selfd = -1;
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struct timeval *tv = (struct timeval *) buf;
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errno = 0;
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while(selfd < 0){
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selfd = select(0, NULL, NULL, NULL, tv);
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if(selfd < 0 && errno != EINTR){
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WARN(_("Error while select()"));
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tmout = 1;
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return NULL;
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}
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}
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tmout = 1;
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return NULL;
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}
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/**
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* run thread with pause [delay] (in seconds), at its end set variable tmout
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*/
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void set_timeout(double delay){
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static int run = 0;
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static pthread_t athread;
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static struct timeval tv; // should be static to send this as argument of tmout_thread
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if(delay < 0.){
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tmout = 1;
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return;
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}
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if(run && (pthread_kill(athread, 0) != ESRCH)){ // another timeout process detected - kill it
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pthread_cancel(athread);
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pthread_join(athread, NULL);
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}
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tmout = 0;
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run = 1;
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tv.tv_sec = (time_t) delay;
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tv.tv_usec = (suseconds_t)((delay - (double)tv.tv_sec)*1e6);
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if(pthread_create(&athread, NULL, tmout_thread, (void*)&tv)){
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WARN(_("Can't create timeout thread!"));
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tmout = 1;
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return;
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}
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}
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