| /* $Id$ */ |
| /* |
| * Copyright (C)2003-2006 Benny Prijono <benny@prijono.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <pj/os.h> |
| #include <pj/errno.h> |
| #include <windows.h> |
| |
| #if defined(PJ_TIMESTAMP_USE_RDTSC) && PJ_TIMESTAMP_USE_RDTSC!=0 && \ |
| defined(PJ_M_I386) && PJ_M_I386 != 0 && \ |
| defined(PJ_HAS_PENTIUM) && PJ_HAS_PENTIUM!=0 && \ |
| defined(_MSC_VER) |
| /* |
| * Use rdtsc to get the OS timestamp. |
| */ |
| static LONG CpuMhz; |
| static pj_int64_t CpuHz; |
| |
| static pj_status_t GetCpuHz(void) |
| { |
| HKEY key; |
| LONG rc; |
| DWORD size; |
| |
| rc = RegOpenKey( HKEY_LOCAL_MACHINE, |
| "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0", |
| &key); |
| if (rc != ERROR_SUCCESS) |
| return PJ_RETURN_OS_ERROR(rc); |
| |
| size = sizeof(CpuMhz); |
| rc = RegQueryValueEx(key, "~MHz", NULL, NULL, (BYTE*)&CpuMhz, &size); |
| RegCloseKey(key); |
| |
| if (rc != ERROR_SUCCESS) { |
| return PJ_RETURN_OS_ERROR(rc); |
| } |
| |
| CpuHz = CpuMhz; |
| CpuHz = CpuHz * 1000000; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* __int64 is nicely returned in EDX:EAX */ |
| __declspec(naked) __int64 rdtsc() |
| { |
| __asm |
| { |
| RDTSC |
| RET |
| } |
| } |
| |
| PJ_DEF(pj_status_t) pj_get_timestamp(pj_timestamp *ts) |
| { |
| ts->u64 = rdtsc(); |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_status_t) pj_get_timestamp_freq(pj_timestamp *freq) |
| { |
| pj_status_t status; |
| |
| if (CpuHz == 0) { |
| status = GetCpuHz(); |
| if (status != PJ_SUCCESS) |
| return status; |
| } |
| |
| freq->u64 = CpuHz; |
| return PJ_SUCCESS; |
| } |
| |
| #else |
| /* |
| * Use QueryPerformanceCounter and QueryPerformanceFrequency. |
| */ |
| PJ_DEF(pj_status_t) pj_get_timestamp(pj_timestamp *ts) |
| { |
| LARGE_INTEGER val; |
| |
| if (!QueryPerformanceCounter(&val)) |
| return PJ_RETURN_OS_ERROR(GetLastError()); |
| |
| ts->u64 = val.QuadPart; |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_status_t) pj_get_timestamp_freq(pj_timestamp *freq) |
| { |
| LARGE_INTEGER val; |
| |
| if (!QueryPerformanceFrequency(&val)) |
| return PJ_RETURN_OS_ERROR(GetLastError()); |
| |
| freq->u64 = val.QuadPart; |
| return PJ_SUCCESS; |
| } |
| |
| #endif /* PJ_TIMESTAMP_USE_RDTSC */ |
| |