xed-get-time.h

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00001 /*BEGIN_LEGAL 
00002 Intel Open Source License 
00003 
00004 Copyright (c) 2002-2015 Intel Corporation. All rights reserved.
00005  
00006 Redistribution and use in source and binary forms, with or without
00007 modification, are permitted provided that the following conditions are
00008 met:
00009 
00010 Redistributions of source code must retain the above copyright notice,
00011 this list of conditions and the following disclaimer.  Redistributions
00012 in binary form must reproduce the above copyright notice, this list of
00013 conditions and the following disclaimer in the documentation and/or
00014 other materials provided with the distribution.  Neither the name of
00015 the Intel Corporation nor the names of its contributors may be used to
00016 endorse or promote products derived from this software without
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00018  
00019 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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00030 END_LEGAL */
00031 
00032 #if !defined(_XED_GET_TIME_H_)
00033 #   define _XED_GET_TIME_H_
00034 
00035 #   include "xed-portability.h"
00036 #   include "xed-types.h"
00037 
00038 #   if defined(__INTEL_COMPILER) && __INTEL_COMPILER > 810  && !defined(_M_IA64)
00039 #      include <ia32intrin.h>
00040 #   endif
00041 #   if defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 810  && !defined(_M_IA64)
00042 #      if __INTEL_COMPILER < 1000
00043 #         pragma intrinsic(__rdtsc)
00044 #      endif
00045 #   endif
00046 #   if !defined(__INTEL_COMPILER)
00047        /* MSVS8 and later */
00048 #      if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(_M_IA64)
00049 #         include <intrin.h>
00050 #         pragma intrinsic(__rdtsc)
00051 #      endif
00052 #   endif
00053 
00054 
00059 static XED_INLINE  xed_uint64_t xed_get_time(void) {
00060     xed_union64_t ticks;
00061     // __STRICT_ANSI__ comes from the -std=c99
00062 #   if defined(__GNUC__) //&& !defined(__STRICT_ANSI__)
00063 #      if defined(__i386__) || defined(i386) || defined(i686) || defined(__x86_64__)
00064           __asm__ volatile ("rdtsc":"=a" (ticks.s.lo32), "=d"(ticks.s.hi32));
00065 #         define FOUND_RDTSC
00066 #      endif
00067 #   endif
00068 #   if defined(__INTEL_COMPILER) &&  __INTEL_COMPILER>=810 && !defined(_M_IA64)
00069        ticks.u64 = __rdtsc();
00070 #      define FOUND_RDTSC
00071 #   endif
00072 #   if !defined(__INTEL_COMPILER)
00073 #      if !defined(FOUND_RDTSC) && defined(_MSC_VER) && _MSC_VER >= 1400 && \
00074                                !defined(_M_IA64) && !defined(_MANAGED)    /* MSVS7, 8 */
00075           ticks.u64 = __rdtsc();
00076 #         define FOUND_RDTSC
00077 #      endif
00078 #   endif
00079 #   if !defined(FOUND_RDTSC)
00080        ticks.u64 = 0;
00081 #   endif
00082     return ticks.u64;
00083 }
00084 
00085 #endif

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