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authorscuri <scuri>2009-08-20 12:35:06 +0000
committerscuri <scuri>2009-08-20 12:35:06 +0000
commit5d735255ddd3cb2f547abd3d03969af3fb7eb04e (patch)
tree8fb66510bc625bb1b08ccb41f1b83fb0f7cb8f19 /src/fftw3/kernel/cycle.h
parent35733b87eed86e5228f12fa10c98a3d9d22a6073 (diff)
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diff --git a/src/fftw3/kernel/cycle.h b/src/fftw3/kernel/cycle.h
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-/*
- * Copyright (c) 2003 Matteo Frigo
- * Copyright (c) 2003 Massachusetts Institute of Technology
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-/* $Id: cycle.h,v 1.1 2008/10/17 06:11:29 scuri Exp $ */
-
-/* machine-dependent cycle counters code. Needs to be inlined. */
-
-/***************************************************************************/
-/* To use the cycle counters in your code, simply #include "cycle.h" (this
- file), and then use the functions/macros:
-
- ticks getticks(void);
-
- ticks is an opaque typedef defined below, representing the current time.
- You extract the elapsed time between two calls to gettick() via:
-
- double elapsed(ticks t1, ticks t0);
-
- which returns a double-precision variable in arbitrary units. You
- are not expected to convert this into human units like seconds; it
- is intended only for *comparisons* of time intervals.
-
- (In order to use some of the OS-dependent timer routines like
- Solaris' gethrtime, you need to paste the autoconf snippet below
- into your configure.ac file and #include "config.h" before cycle.h,
- or define the relevant macros manually if you are not using autoconf.)
-*/
-
-/***************************************************************************/
-/* This file uses macros like HAVE_GETHRTIME that are assumed to be
- defined according to whether the corresponding function/type/header
- is available on your system. The necessary macros are most
- conveniently defined if you are using GNU autoconf, via the tests:
-
- dnl ---------------------------------------------------------------------
-
- AC_C_INLINE
- AC_HEADER_TIME
- AC_CHECK_HEADERS([sys/time.h c_asm.h intrinsics.h])
-
- AC_CHECK_TYPE([hrtime_t],[AC_DEFINE(HAVE_HRTIME_T, 1, [Define to 1 if hrtime_t is defined in <sys/time.h>])],,[#if HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif])
-
- AC_CHECK_FUNCS([gethrtime read_real_time time_base_to_time clock_gettime])
-
- dnl Cray UNICOS _rtc() (real-time clock) intrinsic
- AC_MSG_CHECKING([for _rtc intrinsic])
- rtc_ok=yes
- AC_TRY_LINK([#ifdef HAVE_INTRINSICS_H
-#include <intrinsics.h>
-#endif], [_rtc()], [AC_DEFINE(HAVE__RTC,1,[Define if you have the UNICOS _rtc() intrinsic.])], [rtc_ok=no])
- AC_MSG_RESULT($rtc_ok)
-
- dnl ---------------------------------------------------------------------
-*/
-
-/***************************************************************************/
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-#define INLINE_ELAPSED(INL) static INL double elapsed(ticks t1, ticks t0) \
-{ \
- return (double)(t1 - t0); \
-}
-
-/*----------------------------------------------------------------*/
-/* Solaris */
-#if defined(HAVE_GETHRTIME) && defined(HAVE_HRTIME_T) && !defined(HAVE_TICK_COUNTER)
-typedef hrtime_t ticks;
-
-#define getticks gethrtime
-
-INLINE_ELAPSED(inline)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/* AIX v. 4+ routines to read the real-time clock or time-base register */
-#if defined(HAVE_READ_REAL_TIME) && defined(HAVE_TIME_BASE_TO_TIME) && !defined(HAVE_TICK_COUNTER)
-typedef timebasestruct_t ticks;
-
-static inline ticks getticks(void)
-{
- ticks t;
- read_real_time(&t, TIMEBASE_SZ);
- return t;
-}
-
-static inline double elapsed(ticks t1, ticks t0) /* time in nanoseconds */
-{
- time_base_to_time(&t1, TIMEBASE_SZ);
- time_base_to_time(&t0, TIMEBASE_SZ);
- return ((t1.tb_high - t0.tb_high) * 1e9 + (t1.tb_low - t0.tb_low));
-}
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/*
- * PowerPC ``cycle'' counter using the time base register.
- */
-#if ((defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))) || (defined(__MWERKS__) && defined(macintosh))) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long long ticks;
-
-static __inline__ ticks getticks(void)
-{
- unsigned int tbl, tbu0, tbu1;
-
- do {
- __asm__ __volatile__ ("mftbu %0" : "=r"(tbu0));
- __asm__ __volatile__ ("mftb %0" : "=r"(tbl));
- __asm__ __volatile__ ("mftbu %0" : "=r"(tbu1));
- } while (tbu0 != tbu1);
-
- return (((unsigned long long)tbu0) << 32) | tbl;
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-/*----------------------------------------------------------------*/
-/*
- * Pentium cycle counter
- */
-#if (defined(__GNUC__) || defined(__ICC)) && defined(__i386__) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long long ticks;
-
-static __inline__ ticks getticks(void)
-{
- ticks ret;
-
- __asm__ __volatile__("rdtsc": "=A" (ret));
- /* no input, nothing else clobbered */
- return ret;
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/* Visual C++ -- thanks to Morten Nissov for his help with this */
-#if _MSC_VER >= 1200 && _M_IX86 >= 500 && !defined(HAVE_TICK_COUNTER)
-#include <windows.h>
-typedef LARGE_INTEGER ticks;
-#define RDTSC __asm __emit 0fh __asm __emit 031h /* hack for VC++ 5.0 */
-
-static __inline ticks getticks(void)
-{
- ticks ret;
-
- __asm {
- RDTSC
- mov ret.HighPart, edx
- mov ret.LowPart, eax
- }
- return ret;
-}
-
-static __inline double elapsed(ticks t1, ticks t0)
-{
- return (double)(t1.QuadPart - t0.QuadPart);
-}
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/*
- * X86-64 cycle counter
- */
-#if defined(__GNUC__) && defined(__x86_64__) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long long ticks;
-
-static __inline__ ticks getticks(void)
-{
- unsigned a, d;
- asm volatile("rdtsc" : "=a" (a), "=d" (d));
- return ((ticks)a) | (((ticks)d) << 32);
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/* Visual C++ (FIXME: how to detect compilation for x86-64?) */
-#if _MSC_VER >= 1400 && !defined(HAVE_TICK_COUNTER)
-typedef ULONG64 ticks;
-
-#define getticks __rdtsc
-
-INLINE_ELAPSED(__inline)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/*
- * IA64 cycle counter
- */
-#if defined(__GNUC__) && defined(__ia64__) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long ticks;
-
-static __inline__ ticks getticks(void)
-{
- ticks ret;
-
- __asm__ __volatile__ ("mov %0=ar.itc" : "=r"(ret));
- return ret;
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/* HP/UX IA64 compiler, courtesy Teresa L. Johnson: */
-#if defined(__hpux) && defined(__ia64) && !defined(HAVE_TICK_COUNTER)
-#include <machine/sys/inline.h>
-typedef unsigned long ticks;
-
-static inline ticks getticks(void)
-{
- ticks ret;
-
- ret = _Asm_mov_from_ar (_AREG_ITC);
- return ret;
-}
-
-INLINE_ELAPSED(inline)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/* intel's ecc compiler */
-#if defined(__ECC) && defined(__ia64__) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long ticks;
-#include <ia64intrin.h>
-
-static __inline__ ticks getticks(void)
-{
- return __getReg(_IA64_REG_AR_ITC);
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/*
- * PA-RISC cycle counter
- */
-#if defined(__hppa__) || defined(__hppa) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long ticks;
-
-# ifdef __GNUC__
-static __inline__ ticks getticks(void)
-{
- ticks ret;
-
- __asm__ __volatile__("mfctl 16, %0": "=r" (ret));
- /* no input, nothing else clobbered */
- return ret;
-}
-# else
-# include <machine/inline.h>
-static inline unsigned long getticks(void)
-{
- register ticks ret;
- _MFCTL(16, ret);
- return ret;
-}
-# endif
-
-INLINE_ELAPSED(inline)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/* S390, courtesy of James Treacy */
-#if defined(__GNUC__) && defined(__s390__) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long long ticks;
-
-static __inline__ ticks getticks(void)
-{
- ticks cycles;
- __asm__("stck 0(%0)" : : "a" (&(cycles)) : "memory", "cc");
- return cycles;
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-/*----------------------------------------------------------------*/
-#if defined(__GNUC__) && defined(__alpha__) && !defined(HAVE_TICK_COUNTER)
-/*
- * The 32-bit cycle counter on alpha overflows pretty quickly,
- * unfortunately. A 1GHz machine overflows in 4 seconds.
- */
-typedef unsigned int ticks;
-
-static __inline__ ticks getticks(void)
-{
- unsigned long cc;
- __asm__ __volatile__ ("rpcc %0" : "=r"(cc));
- return (cc & 0xFFFFFFFF);
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-#if defined(__GNUC__) && defined(__sparc_v9__) && !defined(HAVE_TICK_COUNTER)
-typedef unsigned long ticks;
-
-static __inline__ ticks getticks(void)
-{
- ticks ret;
- __asm__("rd %%tick, %0" : "=r" (ret));
- return ret;
-}
-
-INLINE_ELAPSED(__inline__)
-
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-#if defined(__DECC) && defined(__alpha) && defined(HAVE_C_ASM_H) && !defined(HAVE_TICK_COUNTER)
-# include <c_asm.h>
-typedef unsigned int ticks;
-
-static __inline ticks getticks(void)
-{
- unsigned long cc;
- cc = asm("rpcc %v0");
- return (cc & 0xFFFFFFFF);
-}
-
-INLINE_ELAPSED(__inline)
-
-#define HAVE_TICK_COUNTER
-#endif
-/*----------------------------------------------------------------*/
-/* SGI/Irix */
-#if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_SGI_CYCLE) && !defined(HAVE_TICK_COUNTER)
-typedef struct timespec ticks;
-
-static inline ticks getticks(void)
-{
- struct timespec t;
- clock_gettime(CLOCK_SGI_CYCLE, &t);
- return t;
-}
-
-static inline double elapsed(ticks t1, ticks t0)
-{
- return (double)(t1.tv_sec - t0.tv_sec) * 1.0E9 +
- (double)(t1.tv_nsec - t0.tv_nsec);
-}
-#define HAVE_TICK_COUNTER
-#endif
-
-/*----------------------------------------------------------------*/
-/* Cray UNICOS _rtc() intrinsic function */
-#if defined(HAVE__RTC) && !defined(HAVE_TICK_COUNTER)
-#ifdef HAVE_INTRINSICS_H
-# include <intrinsics.h>
-#endif
-
-typedef long long ticks;
-
-#define getticks _rtc
-
-INLINE_ELAPSED(inline)
-
-#define HAVE_TICK_COUNTER
-#endif
-