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Replace waitable timer with sleep function in Win32 port layer.

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This commit is contained in:
Richard Barry 2010-11-15 22:29:28 +00:00
parent 93b07f3db7
commit c30b4242bb
1 changed files with 3 additions and 23 deletions
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26
Source/portable/MSVC-MingW/port.c
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@ -137,40 +137,20 @@ extern void *pxCurrentTCB;
static DWORD WINAPI prvSimulatedPeripheralTimer( LPVOID lpParameter )
{
void *pvTimer;
LARGE_INTEGER liDueTime;
void *pvObjectList[ 2 ];
const long long ll_ms_In_100ns_units = ( long long ) -1000;
/* Just to prevent compiler warnings. */
( void ) lpParameter;
/* The timer is created as a one shot timer even though we want it to repeat
at a given frequency. This is because Windows is not a real time environment,
and attempting to set a high frequency periodic timer will result in event
overruns. Therefore the timer is just reset after each time the pseudo
interrupt handler has processed each tick event. */
pvTimer = CreateWaitableTimer( NULL, TRUE, NULL );
liDueTime.QuadPart = ( long long ) portTICK_RATE_MS * ll_ms_In_100ns_units;
/* Block on the timer itself and the event mutex that grants access to the
interrupt variables. */
pvObjectList[ 0 ] = pvInterruptEventMutex;
pvObjectList[ 1 ] = pvTimer;
for(;;)
{
/* The timer is reset on each itteration of this loop rather than being set
to function periodicallys - this is for the reasons stated in the comments
where the timer is created. */
vPortTrace( "prvSimulatedPeripheralTimer: Tick acked, setting new tick timer\r\n" );
SetWaitableTimer( pvTimer, &liDueTime, 0, NULL, NULL, TRUE );
vPortTrace( "prvSimulatedPeripheralTimer: Tick acked, re-Sleeping()\r\n" );
/* Wait until the timer expires and we can access the pseudo interrupt
variables. */
//WaitForMultipleObjects( ( sizeof( pvObjectList ) / sizeof( void * ) ), pvObjectList, TRUE, INFINITE );
WaitForSingleObject( pvTimer, INFINITE );
Sleep( portTICK_RATE_MS );
vPortTrace( "prvSimulatedPeripheralTimer: Timer signalled, waiting interrupt event mutex\r\n" );
WaitForSingleObject( pvInterruptEventMutex, INFINITE );
vPortTrace( "prvSimulatedPeripheralTimer: Got interrupt event mutex\r\n" );