136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
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** Copyright (C) 2006-2010 Sourcefire, Inc.
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License Version 2 as
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** published by the Free Software Foundation. You may not use, modify or
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** distribute this program under any other version of the GNU General
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** Public License.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef CPU_CLOCK_TICKS_H
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#define CPU_CLOCK_TICKS_H
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "debug.h"
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#include "sf_types.h" /* for uint64_t */
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/* Assembly to find clock ticks. */
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#ifdef WIN32
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#include <windows.h>
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/* INTEL WINDOWS */
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__inline void __cputicks_msc(uint64_t *val)
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{
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__int64 t;
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__asm
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{
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rdtsc;
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mov dword PTR [t],eax;
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mov dword PTR [t+4],edx;
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}
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*val = (uint64_t)t;
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}
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#define get_clockticks(val) __cputicks_msc(&val)
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/*
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#define get_clockticks(val) \
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QueryPerformanceCounter((PLARGE_INTEGER)&val)
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*/
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#else
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#include <unistd.h>
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/* INTEL LINUX/BSD/.. */
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#if (defined(__i386) || defined(__amd64) || defined(__x86_64__))
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#define get_clockticks(val) \
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{ \
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uint32_t a, d; \
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__asm__ __volatile__ ("rdtsc" : "=a" (a), "=d" (d)); \
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val = ((uint64_t)a) | (((uint64_t)d) << 32); \
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}
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#else
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#if (defined(__ia64) && defined(__GNUC__) )
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#define get_clockticks(val) \
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{ \
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__asm__ __volatile__ ("mov %0=ar.itc" : "=r"(val)); \
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}
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#else
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#if (defined(__ia64) && defined(__hpux))
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#include <machine/sys/inline.h>
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#define get_clockticks(val) \
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{ \
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val = _Asm_mov_from_ar (_AREG_ITC); \
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}
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#else
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/* POWER PC */
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#if (defined(__GNUC__) && (defined(__powerpc__) || (defined(__ppc__))))
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#define get_clockticks(val) \
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{ \
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uint32_t tbu0, tbu1, tbl; \
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do \
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{ \
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__asm__ __volatile__ ("mftbu %0" : "=r"(tbu0)); \
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__asm__ __volatile__ ("mftb %0" : "=r"(tbl)); \
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__asm__ __volatile__ ("mftbu %0" : "=r"(tbu1)); \
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} while (tbu0 != tbu1); \
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val = ((uint64_t)tbl) | (((uint64_t)tbu0) << 32); \
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}
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#else
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/* SPARC */
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#ifdef SPARCV9
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#ifdef _LP64
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#define get_clockticks(val) \
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{ \
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__asm__ __volatile__("rd %%tick, %0" : "=r"(val)); \
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}
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#else
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#define get_clockticks(val) \
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{ \
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uint32_t a, b; \
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__asm__ __volatile__("rd %%tick, %0\n" \
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"srlx %0, 32, %1" \
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: "=r"(a), "=r"(b)); \
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val = ((uint64_t)a) | (((uint64_t)b) << 32); \
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}
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#endif /* _LP64 */
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#else
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#define get_clockticks(val)
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#endif /* SPARC */
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#endif /* POWERPC || PPC */
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#endif /* IA64 && HPUX */
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#endif /* IA64 && GNUC */
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#endif /* I386 || AMD64 || X86_64 */
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#endif /* WIN32 */
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static INLINE double get_ticks_per_usec (void)
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{
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uint64_t start = 0, end = 0;
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get_clockticks(start);
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#ifdef WIN32
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Sleep(1000);
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#else
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sleep(1);
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#endif
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get_clockticks(end);
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return (double)(end-start)/1e6;
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}
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#endif /* CPU_CLOCK_TICKS_H */
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