95cb81c286
epicsTimeGetCurrent() is called frequently. Unless more than the default provider is registered, locking and going through the timeProvider list each time is a waste. Instead, short circuit to directly call the default time current time provider unless a another has been registered.
128 lines
3.0 KiB
C++
128 lines
3.0 KiB
C++
/*************************************************************************\
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* Copyright (c) 2008 UChicago Argonne LLC, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#define EPICS_EXPOSE_LIBCOM_MONOTONIC_PRIVATE
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#include "osiSock.h"
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#define epicsExportSharedSymbols
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#include "cantProceed.h"
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#include "epicsTime.h"
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#include "generalTimeSup.h"
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#ifdef CLOCK_REALTIME
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#include "osiClockTime.h"
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#define TIME_INIT ClockTime_Init(CLOCKTIME_NOSYNC)
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#else
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/* Some posix systems may not have CLOCK_REALTIME */
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#define TIME_INIT generalTimeCurrentTpRegister("GetTimeOfDay", \
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LAST_RESORT_PRIORITY, osdTimeGetCurrent)
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extern "C" {
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int osdTimeGetCurrent (epicsTimeStamp *pDest)
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{
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struct timeval tv;
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struct timezone tz;
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if (gettimeofday (&tv, &tz))
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return errno;
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*pDest = epicsTime(tv);
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return epicsTimeOK;
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}
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} // extern "C"
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#endif
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#ifdef __CYGWIN__
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int clock_settime(clockid_t clock, const timespec *tp)
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{
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return -EFAULT;
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}
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#endif
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static int timeRegister(void)
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{
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TIME_INIT;
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osdMonotonicInit();
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return 1;
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}
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static int done = timeRegister();
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int epicsTime_gmtime ( const time_t *pAnsiTime,
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struct tm *pTM )
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{
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struct tm * pRet = gmtime_r ( pAnsiTime, pTM );
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if ( pRet ) {
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return epicsTimeOK;
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}
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else {
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return errno;
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}
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}
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int epicsTime_localtime ( const time_t *clock,
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struct tm *result )
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{
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struct tm * pRet = localtime_r ( clock, result );
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if ( pRet ) {
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return epicsTimeOK;
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}
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else {
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return errno;
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}
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}
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extern "C" epicsShareFunc void
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convertDoubleToWakeTime(double timeout,struct timespec *wakeTime)
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{
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struct timespec now, wait;
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int status;
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if (timeout < 0.0)
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timeout = 0.0;
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else if (timeout > 60 * 60 * 24 * 3652.5)
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timeout = 60 * 60 * 24 * 3652.5; /* 10 years */
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#ifdef CLOCK_REALTIME
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status = clock_gettime(CLOCK_REALTIME, &now);
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#else
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{
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struct timeval tv;
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struct timezone tz;
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status = gettimeofday(&tv, &tz);
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now.tv_sec = tv.tv_sec;
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now.tv_nsec = tv.tv_usec * 1000;
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}
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#endif
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if (status) {
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perror("convertDoubleToWakeTime");
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cantProceed("convertDoubleToWakeTime");
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}
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wait.tv_sec = static_cast< time_t >(timeout);
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wait.tv_nsec = static_cast< long >((timeout - (double)wait.tv_sec) * 1e9);
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wakeTime->tv_sec = now.tv_sec + wait.tv_sec;
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wakeTime->tv_nsec = now.tv_nsec + wait.tv_nsec;
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if (wakeTime->tv_nsec >= 1000000000L) {
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wakeTime->tv_nsec -= 1000000000L;
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++wakeTime->tv_sec;
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}
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}
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