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- Add new KAPC_ENVIRONMENT mode: InsertApcEnvironment.
- Fixup KeInitalizeApc like all the other functions. - Don't use an expensive 48-byte RtlZeroMemory instead of just clearing two members. svn path=/trunk/; revision=24056
This commit is contained in:
Alex Ionescu
parent
8b90aed6be
commit
90a7bca112
2 changed files with 54 additions and 45 deletions
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@ -473,7 +473,8 @@ typedef enum _KAPC_ENVIRONMENT
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{
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OriginalApcEnvironment,
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AttachedApcEnvironment,
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CurrentApcEnvironment
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CurrentApcEnvironment,
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InsertApcEnvironment
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} KAPC_ENVIRONMENT;
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//
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@ -570,46 +570,45 @@ _KeLeaveCriticalRegion(VOID)
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* The The KeInitializeApc routine initializes an APC object, and registers
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* the Kernel, Rundown and Normal routines for that object.
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*
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* Params:
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* Apc - Pointer to a KAPC structure that represents the APC object to
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* @param Apc
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* Pointer to a KAPC structure that represents the APC object to
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* initialize. The caller must allocate storage for the structure
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* from resident memory.
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*
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* Thread - Thread to which to deliver the APC.
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* @param Thread
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* Thread to which to deliver the APC.
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*
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* TargetEnvironment - APC Environment to be used.
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* @param TargetEnvironment
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* APC Environment to be used.
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*
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* KernelRoutine - Points to the KernelRoutine to associate with the APC.
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* @param KernelRoutine
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* Points to the KernelRoutine to associate with the APC.
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* This routine is executed for all APCs.
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*
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* RundownRoutine - Points to the RundownRoutine to associate with the APC.
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* This routine is executed when the Thread exists with
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* the APC executing.
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* @param RundownRoutine
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* Points to the RundownRoutine to associate with the APC.
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* This routine is executed when the Thread exists during APC execution.
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*
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* NormalRoutine - Points to the NormalRoutine to associate with the APC.
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* This routine is executed at PASSIVE_LEVEL. If this is
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* not specifed, the APC becomes a Special APC and the
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* Mode and Context parameters are ignored.
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* @param NormalRoutine
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* Points to the NormalRoutine to associate with the APC.
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* This routine is executed at PASSIVE_LEVEL. If this is not specifed,
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* the APC becomes a Special APC and the Mode and Context parameters are
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* ignored.
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*
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* Mode - Specifies the processor mode at which to run the Normal Routine.
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* @param Mode
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* Specifies the processor mode at which to run the Normal Routine.
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*
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* Context - Specifices the value to pass as Context parameter to the
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* registered routines.
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* @param Context
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* Specifices the value to pass as Context parameter to the registered
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* routines.
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*
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* Returns:
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* None.
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* @return None.
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*
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* Remarks:
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* The caller can queue an initialized APC with KeInsertQueueApc.
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*
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* Storage for the APC object must be resident, such as nonpaged pool
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* allocated by the caller.
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*
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* Callers of this routine must be running at IRQL = PASSIVE_LEVEL.
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* @remarks The caller can queue an initialized APC with KeInsertQueueApc.
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*
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*--*/
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VOID
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STDCALL
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NTAPI
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KeInitializeApc(IN PKAPC Apc,
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IN PKTHREAD Thread,
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IN KAPC_ENVIRONMENT TargetEnvironment,
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@ -619,23 +618,26 @@ KeInitializeApc(IN PKAPC Apc,
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IN KPROCESSOR_MODE Mode,
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IN PVOID Context)
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{
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DPRINT("KeInitializeApc(Apc %x, Thread %x, Environment %d, "
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"KernelRoutine %x, RundownRoutine %x, NormalRoutine %x, Mode %d, "
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"Context %x)\n",Apc,Thread,TargetEnvironment,KernelRoutine,RundownRoutine,
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NormalRoutine,Mode,Context);
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/* Sanity check */
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ASSERT(TargetEnvironment <= InsertApcEnvironment);
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/* Set up the basic APC Structure Data */
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RtlZeroMemory(Apc, sizeof(KAPC));
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Apc->Type = ApcObject;
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Apc->Size = sizeof(KAPC);
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/* Set the Environment */
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if (TargetEnvironment == CurrentApcEnvironment) {
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if (TargetEnvironment == CurrentApcEnvironment)
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{
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/* Use the current one for the thread */
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Apc->ApcStateIndex = Thread->ApcStateIndex;
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}
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else
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{
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/* Sanity check */
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ASSERT((TargetEnvironment <= Thread->ApcStateIndex) ||
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(TargetEnvironment == InsertApcEnvironment));
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} else {
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/* Use the one that was given */
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Apc->ApcStateIndex = TargetEnvironment;
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}
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@ -645,16 +647,22 @@ KeInitializeApc(IN PKAPC Apc,
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Apc->RundownRoutine = RundownRoutine;
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Apc->NormalRoutine = NormalRoutine;
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/* Check if this is a Special APC, in which case we use KernelMode and no Context */
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if (ARGUMENT_PRESENT(NormalRoutine)) {
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/* Check if this is a special APC */
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if (NormalRoutine)
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{
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/* It's a normal one. Set the context and mode */
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Apc->ApcMode = Mode;
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Apc->NormalContext = Context;
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} else {
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Apc->ApcMode = KernelMode;
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}
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else
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{
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/* It's a special APC, which can only be kernel mode */
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Apc->ApcMode = KernelMode;
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Apc->NormalContext = NULL;
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}
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/* The APC is not inserted*/
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Apc->Inserted = FALSE;
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}
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/*++
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