| /* | |
| FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd. | |
| All rights reserved | |
| VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
| *************************************************************************** | |
| * * | |
| * FreeRTOS provides completely free yet professionally developed, * | |
| * robust, strictly quality controlled, supported, and cross * | |
| * platform software that has become a de facto standard. * | |
| * * | |
| * Help yourself get started quickly and support the FreeRTOS * | |
| * project by purchasing a FreeRTOS tutorial book, reference * | |
| * manual, or both from: http://www.FreeRTOS.org/Documentation * | |
| * * | |
| * Thank you! * | |
| * * | |
| *************************************************************************** | |
| This file is part of the FreeRTOS distribution. | |
| FreeRTOS is free software; you can redistribute it and/or modify it under | |
| the terms of the GNU General Public License (version 2) as published by the | |
| Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception. | |
| >>! NOTE: The modification to the GPL is included to allow you to !<< | |
| >>! distribute a combined work that includes FreeRTOS without being !<< | |
| >>! obliged to provide the source code for proprietary components !<< | |
| >>! outside of the FreeRTOS kernel. !<< | |
| FreeRTOS 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. Full license text is available from the following | |
| link: http://www.freertos.org/a00114.html | |
| 1 tab == 4 spaces! | |
| *************************************************************************** | |
| * * | |
| * Having a problem? Start by reading the FAQ "My application does * | |
| * not run, what could be wrong?" * | |
| * * | |
| * http://www.FreeRTOS.org/FAQHelp.html * | |
| * * | |
| *************************************************************************** | |
| http://www.FreeRTOS.org - Documentation, books, training, latest versions, | |
| license and Real Time Engineers Ltd. contact details. | |
| http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
| including FreeRTOS+Trace - an indispensable productivity tool, a DOS | |
| compatible FAT file system, and our tiny thread aware UDP/IP stack. | |
| http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High | |
| Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS | |
| licenses offer ticketed support, indemnification and middleware. | |
| http://www.SafeRTOS.com - High Integrity Systems also provide a safety | |
| engineered and independently SIL3 certified version for use in safety and | |
| mission critical applications that require provable dependability. | |
| 1 tab == 4 spaces! | |
| */ | |
| /* | |
| * Utility functions required to gather run time statistics. See: | |
| * http://www.freertos.org/rtos-run-time-stats.html | |
| * | |
| * Note that this is a simulated port, where simulated time is a lot slower than | |
| * real time, therefore the run time counter values have no real meaningful | |
| * units. | |
| * | |
| * Also note that it is assumed this demo is going to be used for short periods | |
| * of time only, and therefore timer overflows are not handled. | |
| */ | |
| /* FreeRTOS includes. */ | |
| #include <FreeRTOS.h> | |
| /* FreeRTOS+Trace includes. */ | |
| #include "trcUser.h" | |
| /* Variables used in the creation of the run time stats time base. Run time | |
| stats record how much time each task spends in the Running state. */ | |
| static long long llInitialRunTimeCounterValue = 0LL, llTicksPerHundedthMillisecond = 0LL; | |
| /*-----------------------------------------------------------*/ | |
| void vConfigureTimerForRunTimeStats( void ) | |
| { | |
| LARGE_INTEGER liPerformanceCounterFrequency, liInitialRunTimeValue; | |
| /* Initialise the variables used to create the run time stats time base. | |
| Run time stats record how much time each task spends in the Running | |
| state. */ | |
| if( QueryPerformanceFrequency( &liPerformanceCounterFrequency ) == 0 ) | |
| { | |
| llTicksPerHundedthMillisecond = 1; | |
| } | |
| else | |
| { | |
| /* How many times does the performance counter increment in 1/100th | |
| millisecond. */ | |
| llTicksPerHundedthMillisecond = liPerformanceCounterFrequency.QuadPart / 100000LL; | |
| /* What is the performance counter value now, this will be subtracted | |
| from readings taken at run time. */ | |
| QueryPerformanceCounter( &liInitialRunTimeValue ); | |
| llInitialRunTimeCounterValue = liInitialRunTimeValue.QuadPart; | |
| } | |
| } | |
| /*-----------------------------------------------------------*/ | |
| unsigned long ulGetRunTimeCounterValue( void ) | |
| { | |
| LARGE_INTEGER liCurrentCount; | |
| unsigned long ulReturn; | |
| /* What is the performance counter value now? */ | |
| QueryPerformanceCounter( &liCurrentCount ); | |
| /* Subtract the performance counter value reading taken when the | |
| application started to get a count from that reference point, then | |
| scale to (simulated) 1/100ths of a millisecond. */ | |
| if( llTicksPerHundedthMillisecond == 0 ) | |
| { | |
| /* The trace macros are probably calling this function before the | |
| scheduler has been started. */ | |
| ulReturn = 0; | |
| } | |
| else | |
| { | |
| ulReturn = ( unsigned long ) ( ( liCurrentCount.QuadPart - llInitialRunTimeCounterValue ) / llTicksPerHundedthMillisecond ); | |
| } | |
| return ulReturn; | |
| } | |
| /*-----------------------------------------------------------*/ |