diff options
| author | Nat Goodspeed <nat@lindenlab.com> | 2017-03-06 14:27:29 -0500 |
|---|---|---|
| committer | Nat Goodspeed <nat@lindenlab.com> | 2017-03-06 14:27:29 -0500 |
| commit | 1771857e6c538382e86ea5b69e36fe8fbaa59f08 (patch) | |
| tree | 6182c291393b8dbb141d7519b8f1b77d61526774 /indra/llcommon/llfasttimer.h | |
| parent | 08ed7f676f2ce38937a03c2a4e823e3564981264 (diff) | |
| parent | bfdbda24bf96b85104742f5578b5a921bc91a1d8 (diff) | |
Automated merge with ssh://bitbucket.org/lindenlab/viewer-release
Diffstat (limited to 'indra/llcommon/llfasttimer.h')
| -rw-r--r-- | indra/llcommon/llfasttimer.h | 38 |
1 files changed, 10 insertions, 28 deletions
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h index f56e5596f5..2024d707da 100644 --- a/indra/llcommon/llfasttimer.h +++ b/indra/llcommon/llfasttimer.h @@ -90,33 +90,15 @@ public: #if LL_FASTTIMER_USE_RDTSC static U32 getCPUClockCount32() { - U32 ret_val; - __asm - { - _emit 0x0f - _emit 0x31 - shr eax,8 - shl edx,24 - or eax, edx - mov dword ptr [ret_val], eax - } - return ret_val; + unsigned __int64 val = __rdtsc(); + val = val >> 8; + return static_cast<U32>(val); } // return full timer value, *not* shifted by 8 bits static U64 getCPUClockCount64() { - U64 ret_val; - __asm - { - _emit 0x0f - _emit 0x31 - mov eax,eax - mov edx,edx - mov dword ptr [ret_val+4], edx - mov dword ptr [ret_val], eax - } - return ret_val; + return static_cast<U64>( __rdtsc() ); } #else @@ -173,16 +155,16 @@ public: // Mac+Linux+Solaris FAST x86 implementation of CPU clock static U32 getCPUClockCount32() { - U64 x; - __asm__ volatile (".byte 0x0f, 0x31": "=A"(x)); - return (U32)(x >> 8); + U32 low(0),high(0); + __asm__ volatile (".byte 0x0f, 0x31": "=a"(low), "=d"(high) ); + return (low>>8) | (high<<24); } static U64 getCPUClockCount64() { - U64 x; - __asm__ volatile (".byte 0x0f, 0x31": "=A"(x)); - return x; + U32 low(0),high(0); + __asm__ volatile (".byte 0x0f, 0x31": "=a"(low), "=d"(high) ); + return (U64)low | ( ((U64)high) << 32); } #endif |