/* | |
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. | |
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*/ | |
/* | |
* 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> | |
/* 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 can call this function before the kernel has been | |
started, in which case llTicksPerHundedthMillisecond will not have been | |
initialised. */ | |
ulReturn = 0; | |
} | |
else | |
{ | |
ulReturn = ( unsigned long ) ( ( liCurrentCount.QuadPart - llInitialRunTimeCounterValue ) / llTicksPerHundedthMillisecond ); | |
} | |
return ulReturn; | |
} | |
/*-----------------------------------------------------------*/ |