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Create minor optimisations (just an asm instruction or two) by using consts in a few places where previously a volatile variable that didn't change was used.

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Add the simple xTimerGetPeriod() and xTimerGetExpiryTime() functions.
This commit is contained in:
Richard Barry 2016-03-29 13:07:27 +00:00
parent 26d3770fad
commit aeb03e5fa0
5 changed files with 217 additions and 140 deletions
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10
FreeRTOS/Source/portable/MSVC-MingW/port.c
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@ -88,13 +88,15 @@ Priorities are higher when a soak test is performed to lessen the effect of
Windows interfering with the timing. */
#define portSOAK_TEST
#ifndef portSOAK_TEST
#define portDELETE_SELF_THREAD_PRIORITY THREAD_PRIORITY_HIGHEST /* Must be highest. */
#define portSIMULATED_INTERRUPTS_THREAD_PRIORITY THREAD_PRIORITY_NORMAL
#define portSIMULATED_TIMER_THREAD_PRIORITY THREAD_PRIORITY_BELOW_NORMAL
#define portTASK_THREAD_PRIORITY THREAD_PRIORITY_IDLE
#else
#define portSIMULATED_INTERRUPTS_THREAD_PRIORITY THREAD_PRIORITY_TIME_CRITICAL
#define portSIMULATED_TIMER_THREAD_PRIORITY THREAD_PRIORITY_HIGHEST
#define portTASK_THREAD_PRIORITY THREAD_PRIORITY_ABOVE_NORMAL
#define portDELETE_SELF_THREAD_PRIORITY THREAD_PRIORITY_TIME_CRITICAL /* Must be highest. */
#define portSIMULATED_INTERRUPTS_THREAD_PRIORITY THREAD_PRIORITY_HIGHEST
#define portSIMULATED_TIMER_THREAD_PRIORITY THREAD_PRIORITY_ABOVE_NORMAL
#define portTASK_THREAD_PRIORITY THREAD_PRIORITY_NORMAL
#endif
/*
* Created as a high priority thread, this function uses a timer to simulate
@ -516,7 +518,7 @@ uint32_t ulErrorCode;
does not run and swap it out before it is closed. If that were to happen
the thread would never run again and effectively be a thread handle and
memory leak. */
SetThreadPriority( pvThread, THREAD_PRIORITY_HIGHEST );
SetThreadPriority( pvThread, portDELETE_SELF_THREAD_PRIORITY );
/* This function will not return, therefore a yield is set as pending to
ensure a context switch occurs away from this thread on the next tick. */