134 lines
2.7 KiB
C++
134 lines
2.7 KiB
C++
/*
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Copyright (c) Microsoft Corporation
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All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
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compliance with the License. You may obtain a copy of the License
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at http://www.apache.org/licenses/LICENSE-2.0
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THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER
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EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF
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TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT.
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See the Apache Version 2.0 License for specific language governing permissions and
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limitations under the License.
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*/
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/*++
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Module Name:
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async.cpp
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Abstract:
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This module contains support routines for implementing the
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the xcompute async completion notification.
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--*/
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#include "stdafx.h"
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//
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// ValidateAsync(PCCS_ASYNC_INFO asyncInfo)
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// Does some basic validation of the CS_ASYNC_INFO structure
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//
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// returns S_OK if it's well-formed, E_INVALIDARG otherwise
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//
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HRESULT
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ValidateAsync(
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PCXC_ASYNC_INFO async
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)
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{
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if (async==NULL) {
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return S_OK;
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}
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if (async->Size < sizeof(XC_ASYNC_INFO)) {
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return E_INVALIDARG;
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}
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if (async->pOperationState == NULL) {
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return E_INVALIDARG;
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}
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//
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// If an IOCP was supplied, there better be a pOverlapped and CompletionKey
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// to post to it
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//
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if (async->IOCP != NULL)
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{
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if ((async->pOverlapped == NULL) || (async->CompletionKey == NULL)) {
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return E_INVALIDARG;
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}
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} else {
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//
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// If no IOCP was supplied, there also must not be a pOverlapped.
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//
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if (async->pOverlapped != NULL) {
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return E_INVALIDARG;
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}
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}
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return S_OK;
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}
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ASYNC::ASYNC(
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PCXC_ASYNC_INFO pAsyncInfo
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)
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{
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//
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// Capture the supplied completion information
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//
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this->pOperationState = pAsyncInfo->pOperationState;
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this->hEvent = pAsyncInfo->Event;
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this->hIOCP = pAsyncInfo->IOCP;
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this->pOverlapped = pAsyncInfo->pOverlapped;
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this->CompletionKey = pAsyncInfo->CompletionKey;
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}
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ASYNC::~ASYNC()
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{
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}
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HRESULT
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ASYNC::Complete(
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HRESULT hr
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)
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{
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//
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// Indicate status
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//
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*pOperationState = hr;
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//
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// Set the event (if present)
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//
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if (hEvent) {
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::SetEvent(hEvent);
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}
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//
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// Post to the IOCP (if present)
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//
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if (hIOCP) {
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PostQueuedCompletionStatus(hIOCP,
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0,
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CompletionKey,
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pOverlapped);
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}
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delete this;
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//
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// Always return pending
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//
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return HRESULT_FROM_WIN32(ERROR_IO_PENDING);
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}
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