Timeout.c++
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- /* $Id: Timeout.c++,v 1.2 2006/11/30 03:12:40 faxguy Exp $ */
- /*
- * Copyright (c) 1990-1996 Sam Leffler
- * Copyright (c) 1991-1996 Silicon Graphics, Inc.
- * HylaFAX is a trademark of Silicon Graphics
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
- #include <unistd.h>
- #include <signal.h>
- #include <sys/time.h>
- #include "Timeout.h"
- bool Timeout::timerExpired = false;
- Timeout::Timeout() {}
- Timeout::~Timeout() {}
- void Timeout::traceTimer(const char* ...) {}
- void
- Timeout::sigAlarm(int)
- {
- Timeout::timerExpired = true;
- }
- #ifndef SA_INTERRUPT
- #define SA_INTERRUPT 0
- #endif
- void
- Timeout::startTimeout(long ms)
- {
- timerExpired = false;
- #ifdef SA_NOCLDSTOP /* POSIX */
- static struct sigaction sa;
- sa.sa_handler = fxSIGACTIONHANDLER(Timeout::sigAlarm);
- sa.sa_flags = SA_INTERRUPT;
- sigaction(SIGALRM, &sa, (struct sigaction*) 0);
- #else
- #ifdef SV_INTERRUPT /* BSD-style */
- static struct sigvec sv;
- sv.sv_handler = fxSIGVECHANDLER(Timeout::sigAlarm);
- sv.sv_flags = SV_INTERRUPT;
- sigvec(SIGALRM, &sv, (struct sigvec*) 0);
- #else /* System V-style */
- signal(SIGALRM, fxSIGHANDLER(sigAlarm));
- #endif
- #endif
- #ifdef ITIMER_REAL
- itimerval itv;
- itv.it_value.tv_sec = ms / 1000;
- itv.it_value.tv_usec = (ms % 1000) * 1000;
- timerclear(&itv.it_interval);
- (void) setitimer(ITIMER_REAL, &itv, (itimerval*) 0);
- traceTimer("START %ld.%02ld second timeout",
- itv.it_value.tv_sec, itv.it_value.tv_usec / 10000);
- #else
- long secs = howmany(ms, 1000);
- (void) alarm(secs);
- traceTimer("START %ld second timeout", secs);
- #endif
- }
- void
- Timeout::stopTimeout()
- {
- #ifdef ITIMER_REAL
- static itimerval itv = { { 0, 0 }, { 0, 0 } };
- (void) setitimer(ITIMER_REAL, &itv, (itimerval*) 0);
- #else
- (void) alarm(0);
- #endif
- traceTimer("STOP timeout%s", timerExpired ? ", timer expired" : "");
- }