353 lines
10 KiB
C
353 lines
10 KiB
C
/* $NetBSD: rf_etimer.h,v 1.1 1998/11/13 04:20:29 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/* rf_etimer.h -- header file for code related to accurate timing
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* This code currently assumes that the elapsed time between START_TIMER
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* and START_TIMER is less than the period of the cycle counter. This
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* means the events you want to time must be less than:
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* clock speed max time
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* ---------- --------
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* 175 MHz 24 sec
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* 150 MHz 28 sec
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* 125 MHz 34 sec
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*
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*
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* :
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* Log: rf_etimer.h,v
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* Revision 1.32 1996/08/13 18:11:09 jimz
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* want MACH&&!__osf__, not just MACH for mach timing (MACH defined under OSF/1)
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*
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* Revision 1.31 1996/08/12 20:11:38 jimz
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* use read_real_time() on AIX4+
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*
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* Revision 1.30 1996/08/09 18:48:12 jimz
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* for now, use gettimeofday() on MACH
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* (should eventually use better clock stuff)
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*
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* Revision 1.29 1996/08/07 21:09:08 jimz
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* add IRIX as a gettimeofday system
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*
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* Revision 1.28 1996/08/06 22:25:23 jimz
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* add LINUX_I386
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*
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* Revision 1.27 1996/07/30 04:45:53 jimz
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* add ultrix stuff
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*
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* Revision 1.26 1996/07/28 20:31:39 jimz
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* i386netbsd port
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* true/false fixup
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*
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* Revision 1.25 1996/07/27 23:36:08 jimz
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* Solaris port of simulator
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*
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* Revision 1.24 1996/07/27 18:40:24 jimz
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* cleanup sweep
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*
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* Revision 1.23 1996/07/22 19:52:16 jimz
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* switched node params to RF_DagParam_t, a union of
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* a 64-bit int and a void *, for better portability
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* attempted hpux port, but failed partway through for
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* lack of a single C compiler capable of compiling all
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* source files
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*
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* Revision 1.22 1996/07/18 22:57:14 jimz
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* port simulator to AIX
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*
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* Revision 1.21 1996/07/17 21:00:58 jimz
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* clean up timer interface, tracing
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*
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* Revision 1.20 1996/07/17 14:26:28 jimz
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* rf_scc -> rf_rpcc
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*
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* Revision 1.19 1996/06/14 21:24:48 jimz
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* move out ConfigureEtimer
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*
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* Revision 1.18 1996/06/03 23:28:26 jimz
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* more bugfixes
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* check in tree to sync for IPDS runs with current bugfixes
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* there still may be a problem with threads in the script test
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* getting I/Os stuck- not trivially reproducible (runs ~50 times
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* in a row without getting stuck)
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*
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* Revision 1.17 1996/05/30 23:22:16 jimz
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* bugfixes of serialization, timing problems
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* more cleanup
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*
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* Revision 1.16 1996/05/30 12:59:18 jimz
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* make etimer happier, more portable
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*
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* Revision 1.15 1996/05/27 18:56:37 jimz
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* more code cleanup
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* better typing
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* compiles in all 3 environments
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*
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* Revision 1.14 1996/05/23 21:46:35 jimz
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* checkpoint in code cleanup (release prep)
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* lots of types, function names have been fixed
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*
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* Revision 1.13 1996/05/23 00:33:23 jimz
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* code cleanup: move all debug decls to rf_options.c, all extern
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* debug decls to rf_options.h, all debug vars preceded by rf_
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*
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* Revision 1.12 1996/05/18 19:51:34 jimz
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* major code cleanup- fix syntax, make some types consistent,
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* add prototypes, clean out dead code, et cetera
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*
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* Revision 1.11 1995/12/01 18:10:40 root
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* added copyright info
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*
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* Revision 1.10 1995/09/29 14:27:32 wvcii
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* removed printfs from ConfigureEtimer()
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*
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* Revision 1.9 95/09/19 22:57:31 jimz
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* added kernel version of ConfigureEtimer
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*
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* Revision 1.8 1995/09/14 13:03:04 amiri
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* set default CPU speed to 125Mhz to avoid divide by zero problems.
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*
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* Revision 1.7 1995/09/11 19:04:36 wvcii
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* timer autoconfigs using pdl routine to check cpu speed
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* value may still be overridden via config debug var timerTicksPerSec
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*
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*/
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#ifndef _RF__RF_TIMER_H_
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#define _RF__RF_TIMER_H_
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#include "rf_options.h"
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#ifdef _KERNEL
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#define KERNEL
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#endif
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#ifdef __NetBSD__
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#ifdef KERNEL
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extern unsigned int rpcc(void);
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#define rf_read_cycle_counter rpcc
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#else /* KERNEL */
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#ifndef __NetBSD__
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/* XXX does this function even exist anywhere??? GO */
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extern unsigned int rf_rpcc();
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#endif
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#define rf_read_cycle_counter rf_rpcc
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#endif /* KERNEL */
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#define RF_DEF_TIMER_MAX_VAL 0xFFFFFFFF
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typedef struct RF_EtimerVal_s {
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unsigned ccnt; /* cycle count */
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} RF_EtimerVal_t;
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struct RF_Etimer_s {
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RF_EtimerVal_t st;
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RF_EtimerVal_t et;
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unsigned long ticks; /* elapsed time in ticks */
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};
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extern long rf_timer_max_val;
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extern long rf_timer_ticks_per_second;
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extern unsigned long rf_timer_ticks_per_usec;
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#define RF_ETIMER_TICKS2US(_tcks_) ( (_tcks_) / rf_timer_ticks_per_usec )
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#define RF_ETIMER_START(_t_) { (_t_).st.ccnt = rf_read_cycle_counter(); }
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#define RF_ETIMER_STOP(_t_) { (_t_).et.ccnt = rf_read_cycle_counter(); }
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#define RF_ETIMER_EVAL(_t_) { \
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if ((_t_).st.ccnt < (_t_).et.ccnt) \
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(_t_).ticks = (_t_).et.ccnt - (_t_).st.ccnt; \
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else \
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(_t_).ticks = rf_timer_max_val - ((_t_).st.ccnt - (_t_).et.ccnt); \
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}
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#define RF_ETIMER_VAL_TICKS(_t_) ((_t_).ticks)
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#define RF_ETIMER_VAL_US(_t_) (RF_ETIMER_TICKS2US((_t_).ticks))
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#define RF_ETIMER_VAL_MS(_t_) (RF_ETIMER_TICKS2US((_t_).ticks)/1000)
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#endif /* __NetBSD__ */
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#if defined(__alpha) && !defined(__NetBSD__)
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#ifdef KERNEL
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extern unsigned int rpcc();
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#define rf_read_cycle_counter rpcc
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#else /* KERNEL */
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extern unsigned int rf_rpcc();
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#define rf_read_cycle_counter rf_rpcc
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#endif /* KERNEL */
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#define RF_DEF_TIMER_MAX_VAL 0xFFFFFFFF
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typedef struct RF_EtimerVal_s {
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unsigned ccnt; /* cycle count */
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} RF_EtimerVal_t;
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struct RF_Etimer_s {
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RF_EtimerVal_t st;
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RF_EtimerVal_t et;
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unsigned long ticks; /* elapsed time in ticks */
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};
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extern long rf_timer_max_val;
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extern long rf_timer_ticks_per_second;
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extern unsigned long rf_timer_ticks_per_usec;
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#define RF_ETIMER_TICKS2US(_tcks_) ( (_tcks_) / rf_timer_ticks_per_usec )
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#define RF_ETIMER_START(_t_) { (_t_).st.ccnt = rf_read_cycle_counter(); }
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#define RF_ETIMER_STOP(_t_) { (_t_).et.ccnt = rf_read_cycle_counter(); }
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#define RF_ETIMER_EVAL(_t_) { \
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if ((_t_).st.ccnt < (_t_).et.ccnt) \
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(_t_).ticks = (_t_).et.ccnt - (_t_).st.ccnt; \
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else \
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(_t_).ticks = rf_timer_max_val - ((_t_).st.ccnt - (_t_).et.ccnt); \
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}
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#define RF_ETIMER_VAL_TICKS(_t_) ((_t_).ticks)
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#define RF_ETIMER_VAL_US(_t_) (RF_ETIMER_TICKS2US((_t_).ticks))
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#define RF_ETIMER_VAL_MS(_t_) (RF_ETIMER_TICKS2US((_t_).ticks)/1000)
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#endif /* __alpha */
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#ifdef _IBMR2
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extern void rf_rtclock(unsigned int *secs, unsigned int *nsecs);
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#define RF_MSEC_PER_SEC 1000
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#define RF_USEC_PER_SEC 1000000
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#define RF_NSEC_PER_SEC 1000000000
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typedef struct RF_EtimerVal_s {
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unsigned int secs;
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unsigned int nsecs;
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} RF_EtimerVal_t;
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struct RF_Etimer_s {
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RF_EtimerVal_t start;
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RF_EtimerVal_t end;
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RF_EtimerVal_t elapsed;
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};
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#if RF_AIXVERS >= 4
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#include <sys/time.h>
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#define RF_ETIMER_START(_t_) { \
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timebasestruct_t tb; \
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tb.flag = 1; \
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read_real_time(&tb, TIMEBASE_SZ); \
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(_t_).start.secs = tb.tb_high; \
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(_t_).start.nsecs = tb.tb_low; \
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}
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#define RF_ETIMER_STOP(_t_) { \
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timebasestruct_t tb; \
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tb.flag = 1; \
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read_real_time(&tb, TIMEBASE_SZ); \
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(_t_).end.secs = tb.tb_high; \
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(_t_).end.nsecs = tb.tb_low; \
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}
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#else /* RF_AIXVERS >= 4 */
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#define RF_ETIMER_START(_t_) { \
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rf_rtclock(&((_t_).start.secs), &((_t_).start.nsecs)); \
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}
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#define RF_ETIMER_STOP(_t_) { \
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rf_rtclock(&((_t_).end.secs), &((_t_).end.nsecs)); \
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}
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#endif /* RF_AIXVERS >= 4 */
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#define RF_ETIMER_EVAL(_t_) { \
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if ((_t_).end.nsecs >= (_t_).start.nsecs) { \
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(_t_).elapsed.nsecs = (_t_).end.nsecs - (_t_).start.nsecs; \
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(_t_).elapsed.secs = (_t_).end.secs - (_t_).start.nsecs; \
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} \
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else { \
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(_t_).elapsed.nsecs = RF_NSEC_PER_SEC + (_t_).end.nsecs; \
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(_t_).elapsed.nsecs -= (_t_).start.nsecs; \
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(_t_).elapsed.secs = (_t_).end.secs - (_t_).start.secs + 1; \
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} \
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}
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#define RF_ETIMER_VAL_US(_t_) (((_t_).elapsed.secs*RF_USEC_PER_SEC)+((_t_).elapsed.nsecs/1000))
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#define RF_ETIMER_VAL_MS(_t_) (((_t_).elapsed.secs*RF_MSEC_PER_SEC)+((_t_).elapsed.nsecs/1000000))
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#endif /* _IBMR2 */
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/*
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* XXX investigate better timing for these
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*/
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#if defined(hpux) || defined(sun) || defined(NETBSD_I386) || defined(ultrix) || defined(LINUX_I386) || defined(IRIX) || (defined(MACH) && !defined(__osf__))
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#include <sys/time.h>
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#define RF_USEC_PER_SEC 1000000
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struct RF_Etimer_s {
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struct timeval start;
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struct timeval end;
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struct timeval elapsed;
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};
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#ifndef __NetBSD__
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#define RF_ETIMER_START(_t_) { \
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gettimeofday(&((_t_).start), NULL); \
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}
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#define RF_ETIMER_STOP(_t_) { \
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gettimeofday(&((_t_).end), NULL); \
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}
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#else
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#define RF_ETIMER_START(_t_) { \
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}
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/* XXX these just drop off the end of the world... */
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#define RF_ETIMER_STOP(_t_) { \
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}
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#endif
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#define RF_ETIMER_EVAL(_t_) { \
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if ((_t_).end.tv_usec >= (_t_).start.tv_usec) { \
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(_t_).elapsed.tv_usec = (_t_).end.tv_usec - (_t_).start.tv_usec; \
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(_t_).elapsed.tv_sec = (_t_).end.tv_sec - (_t_).start.tv_usec; \
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} \
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else { \
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(_t_).elapsed.tv_usec = RF_USEC_PER_SEC + (_t_).end.tv_usec; \
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(_t_).elapsed.tv_usec -= (_t_).start.tv_usec; \
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(_t_).elapsed.tv_sec = (_t_).end.tv_sec - (_t_).start.tv_sec + 1; \
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} \
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}
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#define RF_ETIMER_VAL_US(_t_) (((_t_).elapsed.tv_sec*RF_USEC_PER_SEC)+(_t_).elapsed.tv_usec)
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#define RF_ETIMER_VAL_MS(_t_) (((_t_).elapsed.tv_sec*RF_MSEC_PER_SEC)+((_t_).elapsed.tv_usec/1000))
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#endif /* hpux || sun || NETBSD_I386 || ultrix || LINUX_I386 || IRIX || (MACH && !__osf__) */
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#endif /* !_RF__RF_TIMER_H_ */
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