/* | |
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* FreeRTOS tutorial books are available in pdf and paperback. * | |
* Complete, revised, and edited pdf reference manuals are also * | |
* available. * | |
* * | |
* Purchasing FreeRTOS documentation will not only help you, by * | |
* ensuring you get running as quickly as possible and with an * | |
* in-depth knowledge of how to use FreeRTOS, it will also help * | |
* the FreeRTOS project to continue with its mission of providing * | |
* professional grade, cross platform, de facto standard solutions * | |
* for microcontrollers - completely free of charge! * | |
* * | |
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
* * | |
* Thank you for using FreeRTOS, and thank you for your support! * | |
* * | |
*************************************************************************** | |
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. See the GNU General Public License for | |
more details. You should have received a copy of the GNU General Public | |
License and the FreeRTOS license exception along with FreeRTOS; if not it | |
can be viewed here: http://www.freertos.org/a00114.html and also obtained | |
by writing to Richard Barry, contact details for whom are available on the | |
FreeRTOS WEB site. | |
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, training, latest information, | |
license and contact details. | |
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
including FreeRTOS+Trace - an indispensable productivity tool. | |
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell | |
the code with commercial support, indemnification, and middleware, under | |
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also | |
provide a safety engineered and independently SIL3 certified version under | |
the SafeRTOS brand: http://www.SafeRTOS.com. | |
*/ | |
/* | |
* 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. */ | |
ulReturn = ( unsigned long ) ( ( liCurrentCount.QuadPart - llInitialRunTimeCounterValue ) / llTicksPerHundedthMillisecond ); | |
return ulReturn; | |
} | |
/*-----------------------------------------------------------*/ |