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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /** \file
     18   This file consists of implementation of class AdbIOCompletion that
     19   encapsulates a generic wrapper around OVERLAPPED Win32 structure
     20   returned from asynchronous I/O requests.
     21 */
     22 
     23 #include "stdafx.h"
     24 #include "adb_io_completion.h"
     25 
     26 AdbIOCompletion::AdbIOCompletion(AdbEndpointObject* parent_io_obj,
     27                                  ULONG expected_trans_size,
     28                                  HANDLE event_hndl)
     29     : AdbObjectHandle(AdbObjectTypeIoCompletion),
     30       expected_transfer_size_(expected_trans_size),
     31       parent_io_object_(parent_io_obj) {
     32   ATLASSERT(NULL != parent_io_obj);
     33   parent_io_obj->AddRef();
     34   ZeroMemory(&overlapped_, sizeof(overlapped_));
     35   overlapped_.hEvent = event_hndl;
     36 }
     37 
     38 AdbIOCompletion::~AdbIOCompletion() {
     39   parent_io_object_->Release();
     40 }
     41 
     42 bool AdbIOCompletion::IsCompleted() {
     43   SetLastError(NO_ERROR);
     44   if (!IsOpened()) {
     45     SetLastError(ERROR_INVALID_HANDLE);
     46     return true;
     47   }
     48 
     49   return HasOverlappedIoCompleted(overlapped()) ? true : false;
     50 }
     51