2010-02-08 17:23:39 +01:00
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/* Copyright (c) 2010 Wildfire Games
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2009-04-18 19:00:33 +02:00
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*
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2010-02-08 17:23:39 +01:00
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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2009-04-18 19:00:33 +02:00
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*/
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2009-04-18 19:51:05 +02:00
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/*
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* platform-independent high resolution timer
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2006-04-12 01:59:08 +02:00
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*/
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2004-05-08 03:11:51 +02:00
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#include "precompiled.h"
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2010-03-01 15:52:58 +01:00
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#include "lib/timer.h"
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2004-03-03 00:56:51 +01:00
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2006-06-22 20:26:08 +02:00
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#include <numeric>
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#include <math.h>
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2007-09-03 01:38:58 +02:00
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#include <float.h>
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2006-06-22 20:26:08 +02:00
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#include <stdarg.h>
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2007-01-01 22:25:47 +01:00
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#include "lib/posix/posix_time.h"
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2007-05-26 18:57:39 +02:00
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#if OS_WIN
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2008-06-30 19:34:18 +02:00
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#include "lib/sysdep/os/win/whrt/whrt.h"
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2007-05-26 18:57:39 +02:00
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#endif
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2007-12-20 21:09:19 +01:00
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#if OS_UNIX
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# include <unistd.h>
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#endif
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2007-04-30 16:35:19 +02:00
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2007-12-20 21:09:19 +01:00
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#if OS_UNIX || OS_WIN
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# define HAVE_GETTIMEOFDAY 1
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#else
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# define HAVE_GETTIMEOFDAY 0
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#endif
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#if (defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0) || OS_WIN
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# define HAVE_CLOCK_GETTIME 1
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#else
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# define HAVE_CLOCK_GETTIME 0
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#endif
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// rationale for wrapping gettimeofday and clock_gettime, instead of just
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// emulating them where not available: allows returning higher-resolution
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// timer values than their us / ns interface, via double [seconds].
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// they're also not guaranteed to be monotonic.
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2009-07-18 03:55:26 +02:00
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#if HAVE_CLOCK_GETTIME
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2007-05-26 18:57:39 +02:00
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static struct timespec start;
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2009-07-18 03:55:26 +02:00
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#elif HAVE_GETTIMEOFDAY
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2007-05-26 18:57:39 +02:00
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static struct timeval start;
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#endif
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2008-01-07 21:03:19 +01:00
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//-----------------------------------------------------------------------------
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// timer API
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void timer_LatchStartTime()
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2007-05-26 18:57:39 +02:00
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{
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2008-09-19 19:56:05 +02:00
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#if OS_WIN
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// whrt_Time starts at zero, nothing needs to be done.
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#elif HAVE_CLOCK_GETTIME
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2007-05-26 18:57:39 +02:00
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(void)clock_gettime(CLOCK_REALTIME, &start);
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#elif HAVE_GETTIMEOFDAY
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gettimeofday(&start, 0);
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#endif
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}
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2008-01-07 21:03:19 +01:00
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double timer_Time()
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2004-03-03 00:56:51 +01:00
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{
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double t;
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2007-06-13 01:29:27 +02:00
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#if OS_WIN
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t = whrt_Time();
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#elif HAVE_CLOCK_GETTIME
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2007-05-26 18:57:39 +02:00
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struct timespec cur;
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(void)clock_gettime(CLOCK_REALTIME, &cur);
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t = (cur.tv_sec - start.tv_sec) + (cur.tv_nsec - start.tv_nsec)*1e-9;
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2005-08-09 18:23:19 +02:00
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#elif HAVE_GETTIMEOFDAY
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2004-03-03 00:56:51 +01:00
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struct timeval cur;
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gettimeofday(&cur, 0);
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2004-06-02 17:31:55 +02:00
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t = (cur.tv_sec - start.tv_sec) + (cur.tv_usec - start.tv_usec)*1e-6;
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2004-03-03 00:56:51 +01:00
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#else
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2008-01-07 21:03:19 +01:00
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# error "timer_Time: add timer implementation for this platform!"
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2004-03-03 00:56:51 +01:00
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#endif
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// make sure time is monotonic (never goes backwards)
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2005-01-23 18:48:32 +01:00
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static double t_last = 0.0;
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2004-06-22 18:05:44 +02:00
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if(t < t_last)
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2007-05-16 17:56:47 +02:00
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t = t_last+DBL_EPSILON;
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2004-06-22 18:05:44 +02:00
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t_last = t;
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2004-03-03 00:56:51 +01:00
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return t;
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}
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2008-01-07 21:03:19 +01:00
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double timer_Resolution()
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2004-03-03 00:56:51 +01:00
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{
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2004-06-24 02:41:29 +02:00
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// may take a while to determine, so cache it
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2005-01-23 18:48:32 +01:00
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static double cached_res = 0.0;
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2004-06-24 02:41:29 +02:00
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if(cached_res != 0.0)
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return cached_res;
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2005-01-23 18:48:32 +01:00
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double res = 0.0;
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2004-06-24 02:41:29 +02:00
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2008-09-19 19:56:05 +02:00
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#if OS_WIN
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res = whrt_Resolution();
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#elif HAVE_CLOCK_GETTIME
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2004-06-24 02:41:29 +02:00
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struct timespec ts;
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2005-01-23 18:48:32 +01:00
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if(clock_getres(CLOCK_REALTIME, &ts) == 0)
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res = ts.tv_nsec * 1e-9;
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2004-03-03 00:56:51 +01:00
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#else
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2008-01-07 21:03:19 +01:00
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const double t0 = timer_Time();
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2004-06-24 02:41:29 +02:00
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double t1, t2;
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2008-09-19 19:56:05 +02:00
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do t1 = timer_Time(); while(t1 == t0);
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do t2 = timer_Time(); while(t2 == t1);
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2004-06-24 02:41:29 +02:00
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res = t2-t1;
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2004-03-03 00:56:51 +01:00
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#endif
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2004-06-24 02:41:29 +02:00
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cached_res = res;
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return res;
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2004-03-03 00:56:51 +01:00
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}
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2008-01-07 21:03:19 +01:00
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//-----------------------------------------------------------------------------
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// client API
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2005-10-10 19:33:34 +02:00
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2005-10-18 01:35:16 +02:00
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// intrusive linked-list of all clients. a fixed-size limit would be
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// acceptable (since timers are added manually), but the list is easy
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// to implement and only has the drawback of exposing TimerClient to users.
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//
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// do not use std::list et al. for this! we must be callable at any time,
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// especially before NLSO ctors run or before heap init.
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had to remove uint and ulong from lib/types.h due to conflict with other library.
this snowballed into a massive search+destroy of the hodgepodge of
mostly equivalent types we had in use (int, uint, unsigned, unsigned
int, i32, u32, ulong, uintN).
it is more efficient to use 64-bit types in 64-bit mode, so the
preferred default is size_t (for anything remotely resembling a size or
index). tile coordinates are ssize_t to allow more efficient conversion
to/from floating point. flags are int because we almost never need more
than 15 distinct bits, bit test/set is not slower and int is fastest to
type. finally, some data that is pretty much directly passed to OpenGL
is now typed accordingly.
after several hours, the code now requires fewer casts and less
guesswork.
other changes:
- unit and player IDs now have an "invalid id" constant in the
respective class to avoid casting and -1
- fix some endian/64-bit bugs in the map (un)packing. added a
convenience function to write/read a size_t.
- ia32: change CPUID interface to allow passing in ecx (required for
cache topology detection, which I need at work). remove some unneeded
functions from asm, replace with intrinsics where possible.
This was SVN commit r5942.
2008-05-11 20:48:32 +02:00
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static size_t num_clients;
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2005-10-17 01:16:08 +02:00
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static TimerClient* clients;
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2005-10-10 19:33:34 +02:00
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2009-11-03 22:46:35 +01:00
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TimerClient* timer_AddClient(TimerClient* tc, const wchar_t* description)
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2005-10-10 19:33:34 +02:00
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{
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2008-01-07 21:03:19 +01:00
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tc->sum.SetToZero();
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2005-10-17 01:16:08 +02:00
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tc->description = description;
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// insert at front of list
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tc->next = clients;
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clients = tc;
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num_clients++;
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2005-10-10 19:33:34 +02:00
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return tc;
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}
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2008-01-07 21:03:19 +01:00
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void timer_BillClient(TimerClient* tc, TimerUnit t0, TimerUnit t1)
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2005-10-10 19:33:34 +02:00
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{
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2008-01-07 21:03:19 +01:00
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tc->sum.AddDifference(t0, t1);
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2005-10-19 22:26:53 +02:00
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tc->num_calls++;
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2005-10-10 19:33:34 +02:00
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}
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2008-01-07 21:03:19 +01:00
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void timer_DisplayClientTotals()
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2005-10-10 19:33:34 +02:00
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{
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2009-11-03 22:46:35 +01:00
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debug_printf(L"TIMER TOTALS (%lu clients)\n", (unsigned long)num_clients);
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debug_printf(L"-----------------------------------------------------\n");
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2005-10-17 01:16:08 +02:00
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while(clients)
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2005-10-10 19:33:34 +02:00
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{
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2005-10-17 01:16:08 +02:00
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// (make sure list and count are consistent)
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debug_assert(num_clients != 0);
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TimerClient* tc = clients;
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clients = tc->next;
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num_clients--;
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2009-11-03 22:46:35 +01:00
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const std::wstring duration = tc->sum.ToString();
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debug_printf(L" %ls: %ls (%lux)\n", tc->description, duration.c_str(), (unsigned long)tc->num_calls);
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2005-10-10 19:33:34 +02:00
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}
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2005-10-17 01:16:08 +02:00
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2009-11-03 22:46:35 +01:00
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debug_printf(L"-----------------------------------------------------\n");
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2005-10-10 19:33:34 +02:00
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}
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