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00008 #include "ace/config-all.h"
00009
00010 ACE_RCSID(ace, gethrtime, "$Id: gethrtime.cpp 77333 2007-02-22 16:03:48Z shuston $")
00011
00012 #if defined (ghs) && (defined (i386) || defined(__i386__))
00013
00014 #include "ace/OS_NS_time.h"
00015
00016 extern "C"
00017 ACE_hrtime_t
00018 ACE_GETHRTIME_NAME (void)
00019 {
00020 #if defined (ACE_HAS_PENTIUM)
00021
00022
00023 #if defined (ACE_LACKS_LONGLONG_T)
00024 double now;
00025 #else
00026 ACE_hrtime_t now;
00027 #endif
00028
00029
00030
00031 #if defined (__GNUG__)
00032 asm volatile ("rdtsc" : "=A" (now) : : "memory");
00033
00034
00035
00036
00037
00038 #else
00039 # error unsupported compiler
00040 #endif
00041
00042 #if defined (ACE_LACKS_LONGLONG_T)
00043
00044
00045 ACE_UINT32 least, most;
00046 ACE_OS::memcpy (&least, &now, sizeof (ACE_UINT32));
00047 ACE_OS::memcpy (&most, (unsigned char *) &now + sizeof (ACE_UINT32),
00048 sizeof (ACE_UINT32));
00049
00050 const ACE_hrtime_t ret (least, most);
00051 return ret;
00052 #else
00053 return now;
00054 #endif
00055
00056 #else
00057 # error This file can _only_ be compiled with ACE_HAS_PENTIUM.
00058 #endif
00059 }
00060 #endif