| /*---------------------------------------------------------------------------* |
| * pcputimer.c * |
| * * |
| * Copyright 2007, 2008 Nuance Communciations, Inc. * |
| * * |
| * Licensed under the Apache License, Version 2.0 (the 'License'); * |
| * you may not use this file except in compliance with the License. * |
| * * |
| * You may obtain a copy of the License at * |
| * http://www.apache.org/licenses/LICENSE-2.0 * |
| * * |
| * Unless required by applicable law or agreed to in writing, software * |
| * distributed under the License is distributed on an 'AS IS' BASIS, * |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * |
| * See the License for the specific language governing permissions and * |
| * limitations under the License. * |
| * * |
| *---------------------------------------------------------------------------*/ |
| |
| |
| |
| #include "pcputimer.h" |
| #include "pmemory.h" |
| |
| #if defined(_WIN32) |
| |
| /* |
| Note that this implementation assumes that GetThreadTimes is |
| available (requires NT 3.5 and above) and that 64 bit arithmetic is |
| available (requires VC) |
| */ |
| |
| struct PCPUTimer_t |
| { |
| HANDLE hThread; |
| LARGE_INTEGER RefTime; |
| asr_uint32_t elapsed; |
| }; |
| |
| |
| /** |
| * Creates a new timer object. |
| **/ |
| ESR_ReturnCode PCPUTimerCreate(PCPUTimer **timer) |
| { |
| PCPUTimer *tmp = NULL; |
| |
| if (timer == NULL) |
| return ESR_INVALID_ARGUMENT; |
| tmp = NEW(PCPUTimer, "PCPUTimer"); |
| if (tmp == NULL) return ESR_OUT_OF_MEMORY; |
| |
| tmp->hThread = GetCurrentThread(); |
| tmp->RefTime.QuadPart = -1; |
| tmp->elapsed = 0; |
| *timer = tmp; |
| |
| return ESR_SUCCESS; |
| } |
| |
| ESR_ReturnCode PCPUTimerDestroy(PCPUTimer *timer) |
| { |
| if (timer == NULL) return ESR_INVALID_ARGUMENT; |
| FREE(timer); |
| return ESR_SUCCESS; |
| } |
| |
| /** |
| * Starts the timer. This sets the reference time from which all new elapsed |
| * time are computed. This does not reset the elapsed time to 0. This is |
| * useful to pause the timer. |
| **/ |
| ESR_ReturnCode PCPUTimerStart(PCPUTimer *timer) |
| { |
| FILETIME CreationTime; |
| FILETIME ExitTime; |
| FILETIME KernelTime; |
| FILETIME UserTime; |
| |
| if (timer == NULL) return ESR_INVALID_ARGUMENT; |
| if (!GetThreadTimes(timer->hThread, |
| &CreationTime, &ExitTime, &KernelTime, &UserTime)) |
| { |
| return ESR_FATAL_ERROR; |
| } |
| |
| timer->RefTime.QuadPart = (((LARGE_INTEGER*) & KernelTime)->QuadPart + |
| ((LARGE_INTEGER*) & UserTime)->QuadPart); |
| |
| return ESR_SUCCESS; |
| } |
| |
| /** |
| * Stops the timer. |
| **/ |
| ESR_ReturnCode PCPUTimerStop(PCPUTimer *timer) |
| { |
| if (timer == NULL) return ESR_INVALID_ARGUMENT; |
| if (timer->RefTime.QuadPart != -1) |
| { |
| FILETIME CreationTime; |
| FILETIME ExitTime; |
| FILETIME KernelTime; |
| FILETIME UserTime; |
| |
| if (!GetThreadTimes(timer->hThread, |
| &CreationTime, &ExitTime, &KernelTime, &UserTime)) |
| return ESR_FATAL_ERROR; |
| |
| timer->elapsed = |
| (asr_uint32_t) (((LARGE_INTEGER*) &KernelTime)->QuadPart + |
| ((LARGE_INTEGER*) &UserTime)->QuadPart - |
| timer->RefTime.QuadPart) / 10; |
| } |
| return ESR_SUCCESS; |
| } |
| |
| /** |
| * Returns the timer elapsed time. If the Timer is in the stopped state, |
| * successive calls to getElapsed() will always return the same value. If |
| * the Timer is in the started state, successive calls will return the |
| * elapsed time since the last time PCPUTimerStart() was called. |
| */ |
| ESR_ReturnCode PCPUTimerGetElapsed(PCPUTimer *timer, asr_uint32_t *elapsed) |
| { |
| if (timer == NULL || elapsed == NULL) return ESR_INVALID_ARGUMENT; |
| if (timer->RefTime.QuadPart != -1) |
| { |
| FILETIME CreationTime; |
| FILETIME ExitTime; |
| FILETIME KernelTime; |
| FILETIME UserTime; |
| |
| if (!GetThreadTimes(timer->hThread, |
| &CreationTime, &ExitTime, &KernelTime, &UserTime)) |
| return ESR_FATAL_ERROR; |
| |
| *elapsed = timer->elapsed + |
| (asr_uint32_t)(((LARGE_INTEGER*) & KernelTime)->QuadPart + |
| ((LARGE_INTEGER*) & UserTime)->QuadPart - |
| timer->RefTime.QuadPart) / 10; |
| } |
| else |
| *elapsed = timer->elapsed; |
| return ESR_SUCCESS; |
| } |
| |
| |
| /** |
| * Resets the elapsed time to 0 and resets the reference time of the Timer. |
| * This effectively reset the timer in the same state it was right after creation. |
| **/ |
| ESR_ReturnCode PCPUTimerReset(PCPUTimer *timer) |
| { |
| if (timer == NULL) return ESR_INVALID_ARGUMENT; |
| timer->RefTime.QuadPart = -1; |
| timer->elapsed = 0; |
| return ESR_SUCCESS; |
| } |
| |
| #elif defined(POSIX) |
| /* |
| */ |
| |
| struct PCPUTimer_t |
| { |
| HANDLE hThread; |
| asr_uint32_t RefTime; |
| asr_uint32_t elapsed; |
| }; |
| |
| /** |
| * Creates a new timer object. |
| **/ |
| ESR_ReturnCode PCPUTimerCreate(PCPUTimer **timer) |
| { |
| PCPUTimer *tmp = NULL; |
| |
| if (timer == NULL) return ESR_INVALID_ARGUMENT; |
| tmp = NEW(PCPUTimer, "PCPUTimer"); |
| if (tmp == NULL) return ESR_OUT_OF_MEMORY; |
| |
| tmp->hThread = (HANDLE)pthread_self(); |
| tmp->elapsed = 0; |
| *timer = tmp; |
| |
| return ESR_SUCCESS; |
| } |
| |
| ESR_ReturnCode PCPUTimerDestroy(PCPUTimer *timer) |
| { |
| if (timer == NULL) return ESR_INVALID_ARGUMENT; |
| FREE(timer); |
| return ESR_SUCCESS; |
| } |
| |
| /** |
| * Starts the timer. This sets the reference time from which all new elapsed |
| * time are computed. This does not reset the elapsed time to 0. This is |
| * useful to pause the timer. |
| **/ |
| ESR_ReturnCode PCPUTimerStart(PCPUTimer *timer) |
| { |
| return ESR_SUCCESS; |
| } |
| |
| /** |
| * Stops the timer. |
| **/ |
| ESR_ReturnCode PCPUTimerStop(PCPUTimer *timer) |
| { |
| return ESR_SUCCESS; |
| } |
| |
| /** |
| * Returns the timer elapsed time. If the Timer is in the stopped state, |
| * successive calls to getElapsed() will always return the same value. If |
| * the Timer is in the started state, successive calls will return the |
| * elapsed time since the last time PCPUTimerStart() was called. |
| */ |
| ESR_ReturnCode PCPUTimerGetElapsed(PCPUTimer *timer, asr_uint32_t *elapsed) |
| { |
| return ESR_SUCCESS; |
| } |
| |
| |
| /** |
| * Resets the elapsed time to 0 and resets the reference time of the Timer. |
| * This effectively reset the timer in the same state it was right after creation. |
| **/ |
| ESR_ReturnCode PCPUTimerReset(PCPUTimer *timer) |
| { |
| return ESR_SUCCESS; |
| } |
| |
| #else |
| /* #error "Ptimer not implemented for this platform." */ |
| #endif |