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Add trace macros into the event groups implementation.

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Add a task pre-delete hook to allow the insertion of any port specific clean up when a task is deleted.
Increase use of 'const' qualifiers.
Add vPortCloseRunningThread() into the Win32 port layer to attempt to allow Windows threads to be closed more gracefully when a task deletes itself.
This commit is contained in:
Richard Barry 2013-12-12 10:19:07 +00:00
parent 0416289066
commit 6b3393b4b6
6 changed files with 129 additions and 16 deletions
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45
FreeRTOS/Source/portable/MSVC-MingW/port.c
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@ -244,6 +244,7 @@ char *pcTopOfStack = ( char * ) pxTopOfStack;
/* Create the thread itself. */
pxThreadState->pvThread = CreateThread( NULL, 0, ( LPTHREAD_START_ROUTINE ) pxCode, pvParameters, CREATE_SUSPENDED, NULL );
configASSERT( pxThreadState->pvThread );
SetThreadAffinityMask( pxThreadState->pvThread, 0x01 );
SetThreadPriorityBoost( pxThreadState->pvThread, TRUE );
SetThreadPriority( pxThreadState->pvThread, THREAD_PRIORITY_IDLE );
@ -418,13 +419,51 @@ void vPortDeleteThread( void *pvTaskToDelete )
{
xThreadState *pxThreadState;
WaitForSingleObject( pvInterruptEventMutex, INFINITE );
/* Find the handle of the thread being deleted. */
pxThreadState = ( xThreadState * ) ( *( unsigned long *) pvTaskToDelete );
/* Check that the thread is still valid, it might have been closed by
vPortCloseRunningThread() - which will be the case if the task associated
with the thread originally deleted itself rather than being deleted by a
different task. */
if( pxThreadState->pvThread != NULL )
{
WaitForSingleObject( pvInterruptEventMutex, INFINITE );
CloseHandle( pxThreadState->pvThread );
TerminateThread( pxThreadState->pvThread, 0 );
ReleaseMutex( pvInterruptEventMutex );
}
}
/*-----------------------------------------------------------*/
void vPortCloseRunningThread( void *pvTaskToDelete, volatile portBASE_TYPE *pxPendYield )
{
xThreadState *pxThreadState;
void *pvThread;
/* Find the handle of the thread being deleted. */
pxThreadState = ( xThreadState * ) ( *( unsigned long *) pvTaskToDelete );
TerminateThread( pxThreadState->pvThread, 0 );
pvThread = pxThreadState->pvThread;
ReleaseMutex( pvInterruptEventMutex );
/* Raise the Windows priority of the thread to ensure the FreeRTOS scheduler
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_ABOVE_NORMAL );
/* 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. */
*pxPendYield = pdTRUE;
/* Mark the thread associated with this task as invalid so
vPortDeleteThread() does not try to terminate it. */
pxThreadState->pvThread = NULL;
/* Close the thread. */
CloseHandle( pvThread );
ExitThread( 0 );
}
/*-----------------------------------------------------------*/