460 lines
18 KiB
C
460 lines
18 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% TTTTT IIIII M M EEEEE RRRR %
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% T I MM MM E R R %
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% T I M M M EEE RRRR %
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% T I M M E R R %
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% T IIIII M M EEEEE R R %
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% %
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% %
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% MagickCore Timing Methods %
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% %
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% Software Design %
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% John Cristy %
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% January 1993 %
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% %
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% %
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% Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% http://www.imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% Contributed by Bill Radcliffe and Bob Friesenhahn.
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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/log.h"
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#include "magick/memory_.h"
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#include "magick/timer.h"
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/*
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Define declarations.
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*/
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#if defined(macintosh)
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#define CLK_TCK CLOCKS_PER_SEC
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#endif
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#if !defined(CLK_TCK)
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#define CLK_TCK sysconf(_SC_CLK_TCK)
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#endif
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/*
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Forward declarations.
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*/
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static double
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UserTime(void);
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static void
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StopTimer(TimerInfo *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% A c q u i r e T i m e r I n f o %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% AcquireTimerInfo() initializes the TimerInfo structure. It effectively
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% creates a stopwatch and starts it.
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%
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% The format of the AcquireTimerInfo method is:
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%
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% TimerInfo *AcquireTimerInfo(void)
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%
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*/
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MagickExport TimerInfo *AcquireTimerInfo(void)
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{
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TimerInfo
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*timer_info;
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timer_info=(TimerInfo *) AcquireMagickMemory(sizeof(*timer_info));
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if (timer_info == (TimerInfo *) NULL)
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ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString");
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(void) ResetMagickMemory(timer_info,0,sizeof(*timer_info));
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timer_info->signature=MagickSignature;
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GetTimerInfo(timer_info);
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return(timer_info);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% C o n t i n u e T i m e r %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ContinueTimer() resumes a stopped stopwatch. The stopwatch continues
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% counting from the last StartTimer() onwards.
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%
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% The format of the ContinueTimer method is:
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%
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% MagickBooleanType ContinueTimer(TimerInfo *time_info)
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%
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% A description of each parameter follows.
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%
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% o time_info: Time statistics structure.
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%
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*/
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MagickExport MagickBooleanType ContinueTimer(TimerInfo *time_info)
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{
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assert(time_info != (TimerInfo *) NULL);
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assert(time_info->signature == MagickSignature);
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if (time_info->state == UndefinedTimerState)
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return(MagickFalse);
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if (time_info->state == StoppedTimerState)
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{
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time_info->user.total-=time_info->user.stop-time_info->user.start;
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time_info->elapsed.total-=time_info->elapsed.stop-
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time_info->elapsed.start;
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}
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time_info->state=RunningTimerState;
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return(MagickTrue);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% D e s t r o y T i m e r I n f o %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% DestroyTimerInfo() zeros memory associated with the TimerInfo structure.
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%
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% The format of the DestroyTimerInfo method is:
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%
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% TimerInfo *DestroyTimerInfo(TimerInfo *timer_info)
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%
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% A description of each parameter follows:
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%
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% o timer_info: The cipher context.
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%
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*/
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MagickExport TimerInfo *DestroyTimerInfo(TimerInfo *timer_info)
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{
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assert(timer_info != (TimerInfo *) NULL);
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assert(timer_info->signature == MagickSignature);
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timer_info->signature=(~MagickSignature);
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timer_info=(TimerInfo *) RelinquishMagickMemory(timer_info);
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return(timer_info);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ E l a p s e d T i m e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ElapsedTime() returns the elapsed time (in seconds) since the last call to
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% StartTimer().
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%
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% The format of the ElapsedTime method is:
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%
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% double ElapsedTime()
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%
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*/
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static double ElapsedTime(void)
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{
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#if defined(MAGICKCORE_HAVE_TIMES)
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struct tms
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timer;
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return((double) times(&timer)/CLK_TCK);
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#else
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#if defined(MAGICKCORE_WINDOWS_SUPPORT)
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return(NTElapsedTime());
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#else
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return((double) clock()/CLK_TCK);
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#endif
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#endif
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% G e t E l a p s e d T i m e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetElapsedTime() returns the elapsed time (in seconds) passed between the
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% start and stop events. If the stopwatch is still running, it is stopped
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% first.
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%
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% The format of the GetElapsedTime method is:
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%
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% double GetElapsedTime(TimerInfo *time_info)
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%
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% A description of each parameter follows.
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%
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% o time_info: Timer statistics structure.
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%
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*/
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MagickExport double GetElapsedTime(TimerInfo *time_info)
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{
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assert(time_info != (TimerInfo *) NULL);
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assert(time_info->signature == MagickSignature);
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if (time_info->state == UndefinedTimerState)
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return(0.0);
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if (time_info->state == RunningTimerState)
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StopTimer(time_info);
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return(time_info->elapsed.total);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ G e t T i m e r I n f o %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetTimerInfo() initializes the TimerInfo structure.
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%
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% The format of the GetTimerInfo method is:
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%
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% void GetTimerInfo(TimerInfo *time_info)
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%
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% A description of each parameter follows.
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%
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% o time_info: Timer statistics structure.
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%
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*/
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MagickExport void GetTimerInfo(TimerInfo *time_info)
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{
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/*
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Create a stopwatch and start it.
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*/
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assert(time_info != (TimerInfo *) NULL);
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(void) ResetMagickMemory(time_info,0,sizeof(*time_info));
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time_info->state=UndefinedTimerState;
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time_info->signature=MagickSignature;
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StartTimer(time_info,MagickTrue);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% G e t U s e r T i m e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetUserTime() returns the User time (user and system) by the operating
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% system (in seconds) between the start and stop events. If the stopwatch is
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% still running, it is stopped first.
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%
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% The format of the GetUserTime method is:
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%
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% double GetUserTime(TimerInfo *time_info)
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%
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% A description of each parameter follows.
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%
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% o time_info: Timer statistics structure.
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%
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*/
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MagickExport double GetUserTime(TimerInfo *time_info)
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{
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assert(time_info != (TimerInfo *) NULL);
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assert(time_info->signature == MagickSignature);
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if (time_info->state == UndefinedTimerState)
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return(0.0);
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if (time_info->state == RunningTimerState)
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StopTimer(time_info);
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return(time_info->user.total);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e s e t T i m e r %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ResetTimer() resets the stopwatch.
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%
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% The format of the ResetTimer method is:
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%
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% void ResetTimer(TimerInfo *time_info)
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%
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% A description of each parameter follows.
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%
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% o time_info: Timer statistics structure.
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%
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*/
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MagickExport void ResetTimer(TimerInfo *time_info)
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{
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assert(time_info != (TimerInfo *) NULL);
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assert(time_info->signature == MagickSignature);
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StopTimer(time_info);
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time_info->elapsed.stop=0.0;
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time_info->user.stop=0.0;
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ S t a r t T i m e r %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% StartTimer() starts the stopwatch.
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%
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% The format of the StartTimer method is:
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%
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% void StartTimer(TimerInfo *time_info,const MagickBooleanType reset)
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%
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% A description of each parameter follows.
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%
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% o time_info: Timer statistics structure.
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%
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% o reset: If reset is MagickTrue, then the stopwatch is reset prior to
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% starting. If reset is MagickFalse, then timing is continued without
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% resetting the stopwatch.
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%
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*/
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MagickExport void StartTimer(TimerInfo *time_info,const MagickBooleanType reset)
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{
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assert(time_info != (TimerInfo *) NULL);
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assert(time_info->signature == MagickSignature);
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if (reset != MagickFalse)
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{
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/*
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Reset the stopwatch before starting it.
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*/
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time_info->user.total=0.0;
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time_info->elapsed.total=0.0;
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}
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if (time_info->state != RunningTimerState)
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{
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time_info->elapsed.start=ElapsedTime();
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time_info->user.start=UserTime();
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}
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time_info->state=RunningTimerState;
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ S t o p T i m e r %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% StopTimer() stops the stopwatch.
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%
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% The format of the StopTimer method is:
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%
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% void StopTimer(TimerInfo *time_info)
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%
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% A description of each parameter follows.
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%
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% o time_info: Timer statistics structure.
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%
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*/
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static void StopTimer(TimerInfo *time_info)
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{
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assert(time_info != (TimerInfo *) NULL);
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assert(time_info->signature == MagickSignature);
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time_info->elapsed.stop=ElapsedTime();
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time_info->user.stop=UserTime();
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if (time_info->state == RunningTimerState)
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{
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time_info->user.total+=time_info->user.stop-
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time_info->user.start+MagickEpsilon;
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time_info->elapsed.total+=time_info->elapsed.stop-
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time_info->elapsed.start+MagickEpsilon;
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}
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time_info->state=StoppedTimerState;
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ U s e r T i m e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% UserTime() returns the total time the process has been scheduled (in
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% seconds) since the last call to StartTimer().
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%
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% The format of the UserTime method is:
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%
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% double UserTime()
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%
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*/
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static double UserTime(void)
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{
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#if defined(MAGICKCORE_HAVE_TIMES)
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struct tms
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timer;
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(void) times(&timer);
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return((double) (timer.tms_utime+timer.tms_stime)/CLK_TCK);
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#else
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#if defined(MAGICKCORE_WINDOWS_SUPPORT)
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return(NTUserTime());
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#else
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return((double) clock()/CLK_TCK);
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#endif
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#endif
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}
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