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Diffstat (limited to 'src/fftw3/kernel/cycle.h')
| -rw-r--r-- | src/fftw3/kernel/cycle.h | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/src/fftw3/kernel/cycle.h b/src/fftw3/kernel/cycle.h new file mode 100644 index 0000000..a324c2a --- /dev/null +++ b/src/fftw3/kernel/cycle.h @@ -0,0 +1,420 @@ +/* + * 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 + |