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Adding Multitasking Capability to Applications Using Multiprocessing Services

Changes From Previous Versions of Multiprocessing Services

Multiprocessing Services 2.0 supports some, but not all, functions available in earlier releases. Table B-1 lists the functions that were introduced in version 1.0 that are still supported in version 2.0.

Table B-1 Older functions supported in version 2.0

Name	Comments
`MPProcessors`
`MPCreateTask`
`MPTerminateTask`
`MPCurrentTaskID`
`MPYield`
`MPExit`
`MPCreateQueue`
`MPDeleteQueue`
`MPNotifyQueue`
`MPWaitOnQueue`
`MPCreateSemaphore`
`MPCreateBinarySemaphore`	In C, a macro that calls `MPCreateSemaphore` .
`MPDeleteSemaphore`
`MPSignalSemaphore`
`MPWaitOnSemaphore`
`MPCreateCriticalRegion`
`MPDeleteCriticalRegion`
`MPEnterCriticalRegion`
`MPExitCriticalRegion`
`MPAllocate`	Deprecated. Use `MPAllocateAligned` instead.
`MPFree`
`MPBlockCopy`
`MPLibraryIsLoaded`	In C, a macro that checks to see if the `MPProcessors` symbol is resolved.

Table B-2 lists Multiprocessing Services functions that are new in version 2.0.

Table B-2 New functions introduced with version 2.0

Name	Comments
`MPProcessorsScheduled`
`MPSetTaskWeight`
`MPTaskIsPreemptive`
`MPAllocateTaskStorageIndex`
`MPDeallocateTaskStorageIndex`
`MPSetTaskStorageValue`
`MPGetTaskStorageValue`
`MPSetQueueReserve`
`MPCreateEvent`
`MPDeleteEvent`
`MPSetEvent`
`MPWaitForEvent`
`UpTime`
`DurationToAbsolute`
`AbsoluteToDuration`
`MPDelayUntil`
`MPCreateTimer`
`MPDeleteTimer`
`MPSetTimerNotify`
`MPArmTimer`
`MPCancelTimer`
`MPSetExceptionHandler`
`MPThrowException`
`MPDisposeTaskException`
`MPExtractTaskState`
`MPSetTaskState`
`MPRegisterDebugger`
`MPRegisterDebugger`
`MPAllocateAligned`	Preferred over MPAllocate.
`MPGetAllocatedBlockSize`
`MPBlockClear`
`MPDataToCode`
`MPRemoteCall`	Preferred over `_MPRPC`

Table B-3 shows unofficial functions included in earlier header files that remain supported in version 2.0. Note, however, that future versions may not support these functions.

Table B-3 Unofficial functions still supported in version 2.0

Name	Comments
`_MPRPC`	Deprecated. Use `MPRemoteCall` instead.
`_MPAllocateSys`	Deprecated. Use `MPAllocateAligned` instead.
`_MPTaskIsToolboxSafe`
`_MPLibraryVersion`
`_MPLibraryIsCompatible`

Table B-4 shows functions used for debugging that are no longer supported in version 2.0. You can access these functions for older builds if you #define MPIncludeDefunctServices to be nonzero.

Table B-4 Debugging functions unsupported in version 2.0

Name	Comments
`_MPInitializePrintf`
`_MPPrintf`
`_MPDebugStr`
`_MPStatusPString`
`_MPStatusCString`