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+/*
+ * Copyright (c) 2003, 2006 Matteo Frigo
+ * Copyright (c) 2003, 2006 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 1.52 2006-02-08 02:36:47 athena 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:
+
+ CycleCounterTicks getticks(void);
+
+ CycleCounterTicks is an opaque typedef defined below, representing the current time.
+ You extract the elapsed time between two calls to gettick() via:
+
+ double elapsed(CycleCounterTicks t1, CycleCounterTicks 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 mach/mach_time.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 mach_absolute_time])
+
+ 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 ---------------------------------------------------------------------
+*/
+
+/***************************************************************************/
+
+#ifndef QBENCHLIB_CYCLE_H
+#define QBENCHLIB_CYCLE_H
+
+#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(CycleCounterTicks t1, CycleCounterTicks t0) \
+{ \
+ return (double)(t1 - t0); \
+}
+
+/*----------------------------------------------------------------*/
+/* Solaris */
+#if defined(HAVE_GETHRTIME) && defined(HAVE_HRTIME_T) && !defined(HAVE_TICK_COUNTER)
+typedef hrtime_t CycleCounterTicks;
+
+#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 CycleCounterTicks;
+
+static inline CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks t;
+ read_real_time(&t, TIMEBASE_SZ);
+ return t;
+}
+
+static inline double elapsed(CycleCounterTicks t1, CycleCounterTicks 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 CycleCounterTicks;
+
+static __inline__ CycleCounterTicks 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
+
+/* MacOS/Mach (Darwin) time-base register interface (unlike UpTime,
+ from Carbon, requires no additional libraries to be linked). */
+#if defined(HAVE_MACH_ABSOLUTE_TIME) && defined(HAVE_MACH_MACH_TIME_H) && !defined(HAVE_TICK_COUNTER)
+#include <mach/mach_time.h>
+typedef uint64_t CycleCounterTicks;
+#define getticks mach_absolute_time
+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 CycleCounterTicks;
+
+static __inline__ CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks ret;
+
+ __asm__ __volatile__("rdtsc": "=A" (ret));
+ /* no input, nothing else clobbered */
+ return ret;
+}
+
+INLINE_ELAPSED(__inline__)
+
+#define HAVE_TICK_COUNTER
+#define TIME_MIN 5000.0 /* unreliable pentium IV cycle counter */
+#endif
+
+/* Visual C++ -- thanks to Morten Nissov for his help with this */
+#if _MSC_VER >= 1200 && (_M_IX86 >= 500 || (defined(_WIN32_WCE) && defined(_X86_))) && !defined(HAVE_TICK_COUNTER)
+#include <windows.h>
+typedef LARGE_INTEGER CycleCounterTicks;
+#define RDTSC __asm __emit 0fh __asm __emit 031h /* hack for VC++ 5.0 */
+
+static __inline CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks retval;
+
+ __asm {
+ RDTSC
+ mov retval.HighPart, edx
+ mov retval.LowPart, eax
+ }
+ return retval;
+}
+
+static __inline double elapsed(CycleCounterTicks t1, CycleCounterTicks t0)
+{
+ return (double)(t1.QuadPart - t0.QuadPart);
+}
+
+#define HAVE_TICK_COUNTER
+#define TIME_MIN 5000.0 /* unreliable pentium IV cycle counter */
+#endif
+
+#if _MSC_VER >= 1400 && defined(_WIN32_WCE) && !defined(HAVE_TICK_COUNTER)
+#include <windows.h>
+typedef DWORD CycleCounterTicks;
+
+static __inline CycleCounterTicks getticks(void)
+{
+ return GetTickCount();
+}
+
+static __inline double elapsed(CycleCounterTicks t1, CycleCounterTicks t0)
+{
+ return (double)(t1 - t0);
+}
+
+#define HAVE_TICK_COUNTER
+#define TIME_MIN 5000.0
+#endif
+
+/*----------------------------------------------------------------*/
+/*
+ * X86-64 cycle counter
+ */
+#if (defined(__GNUC__) || defined(__ICC)) && defined(__x86_64__) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned long long CycleCounterTicks;
+
+static __inline__ CycleCounterTicks getticks(void)
+{
+ unsigned a, d;
+ asm volatile("rdtsc" : "=a" (a), "=d" (d));
+ return ((CycleCounterTicks)a) | (((CycleCounterTicks)d) << 32);
+}
+
+INLINE_ELAPSED(__inline__)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/* PGI compiler, courtesy Cristiano Calonaci, Andrea Tarsi, & Roberto Gori.
+ NOTE: this code will fail to link unless you use the -Masmkeyword compiler
+ option (grrr). */
+#if defined(__PGI) && defined(__x86_64__) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned long long CycleCounterTicks;
+static CycleCounterTicks getticks(void)
+{
+ asm(" rdtsc; shl $0x20,%rdx; mov %eax,%eax; or %rdx,%rax; ");
+}
+INLINE_ELAPSED(__inline__)
+#define HAVE_TICK_COUNTER
+#endif
+
+/* Visual C++ */
+#if _MSC_VER >= 1400 && (defined(_M_AMD64) || defined(_M_X64)) && !defined(HAVE_TICK_COUNTER)
+#include <intrin.h>
+
+typedef unsigned __int64 CycleCounterTicks;
+
+#define getticks __rdtsc
+
+INLINE_ELAPSED(__inline)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/*----------------------------------------------------------------*/
+/*
+ * IA64 cycle counter
+ */
+
+/* intel's icc/ecc compiler */
+#if (defined(__EDG_VERSION) || defined(__ECC)) && defined(__ia64__) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned long CycleCounterTicks;
+#include <ia64intrin.h>
+
+static __inline__ CycleCounterTicks getticks(void)
+{
+ return __getReg(_IA64_REG_AR_ITC);
+}
+
+INLINE_ELAPSED(__inline__)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/* gcc */
+#if defined(__GNUC__) && defined(__ia64__) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned long CycleCounterTicks;
+
+static __inline__ CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks 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 CycleCounterTicks;
+
+static inline CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks ret;
+
+ ret = _Asm_mov_from_ar (_AREG_ITC);
+ return ret;
+}
+
+INLINE_ELAPSED(inline)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/* Microsoft Visual C++ */
+#if defined(_MSC_VER) && defined(_M_IA64) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned __int64 CycleCounterTicks;
+
+# ifdef __cplusplus
+extern "C"
+# endif
+ticks __getReg(int whichReg);
+#pragma intrinsic(__getReg)
+
+static __inline CycleCounterTicks getticks(void)
+{
+ volatile CycleCounterTicks temp;
+ temp = __getReg(3116);
+ return temp;
+}
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/*----------------------------------------------------------------*/
+/*
+ * PA-RISC cycle counter
+ */
+#if (defined(__hppa__) || defined(__hppa)) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned long CycleCounterTicks;
+
+# ifdef __GNUC__
+static __inline__ CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks ret;
+
+ __asm__ __volatile__("mfctl 16, %0": "=r" (ret));
+ /* no input, nothing else clobbered */
+ return ret;
+}
+
+INLINE_ELAPSED(inline)
+
+#define HAVE_TICK_COUNTER
+
+# elif 0 // Doesn't compile
+# include <machine/inline.h>
+static inline unsigned long getticks(void)
+{
+ register CycleCounterTicks ret;
+ _MFCTL(16, ret);
+ return ret;
+}
+# endif
+
+#endif
+
+/*----------------------------------------------------------------*/
+/* S390, courtesy of James Treacy */
+#if defined(__GNUC__) && defined(__s390__) && !defined(HAVE_TICK_COUNTER)
+typedef unsigned long long CycleCounterTicks;
+
+static __inline__ CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks 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 CycleCounterTicks;
+
+static __inline__ CycleCounterTicks 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 CycleCounterTicks;
+
+static __inline__ CycleCounterTicks getticks(void)
+{
+ CycleCounterTicks ret;
+ __asm__ __volatile__("rd %%tick, %0" : "=r" (ret));
+ return ret;
+}
+
+INLINE_ELAPSED(__inline__)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/*----------------------------------------------------------------*/
+#if (defined(__DECC) || defined(__DECCXX)) && defined(__alpha) && defined(HAVE_C_ASM_H) && !defined(HAVE_TICK_COUNTER)
+# include <c_asm.h>
+typedef unsigned int CycleCounterTicks;
+
+static __inline CycleCounterTicks 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 CycleCounterTicks;
+
+static inline CycleCounterTicks getticks(void)
+{
+ struct timespec t;
+ clock_gettime(CLOCK_SGI_CYCLE, &t);
+ return t;
+}
+
+static inline double elapsed(CycleCounterTicks t1, CycleCounterTicks 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 CycleCounterTicks;
+
+#define getticks _rtc
+
+INLINE_ELAPSED(inline)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+/*----------------------------------------------------------------*/
+/* Symbian */
+#if defined(__SYMBIAN32__) && !defined(HAVE_TICK_COUNTER)
+#include <e32std.h>
+
+typedef TUint32 CycleCounterTicks;
+
+static inline CycleCounterTicks getticks(void)
+{
+ return User::FastCounter();
+}
+
+INLINE_ELAPSED(inline)
+
+#define HAVE_TICK_COUNTER
+#endif
+
+#endif // QBENCHLIB_CYCLE_H