Main Page Class Hierarchy Alphabetical List Compound List File List Compound Members File Members Related Pages

# ACE_WIN32_Asynch_Write_File Class Reference

This class is a factory for starting off asynchronous writes on a file. More...

`#include <WIN32_Asynch_IO.h>`

Inheritance diagram for ACE_WIN32_Asynch_Write_File

[legend]
Collaboration diagram for ACE_WIN32_Asynch_Write_File:

[legend]
List of all members.

## Public Methods
| ACE_WIN32_Asynch_Write_File (ACE_WIN32_Proactor *win32_proactor)
| Constructor.
int | write (ACE_Message_Block &message_block, u_long bytes_to_write, u_long offset, u_long offset_high, const void *act, int priority, int signal_number = 0)
virtual | ~ACE_WIN32_Asynch_Write_File (void)
| Destrcutor.
int | open (ACE_Handler &handler, ACE_HANDLE handle, const void *completion_key, ACE_Proactor *proactor)
int | cancel (void)
ACE_Proactor* | proactor (void) const
| Return the underlying proactor.
## Private Methods
int | write (ACE_Message_Block &message_block, u_long bytes_to_write, const void *act, int priority, int signal_number = 0)

## Detailed Description

This class is a factory for starting off asynchronous writes on a file.

Once <open> is called, multiple asynchronous <write>s can be started using this class. A ACE_Asynch_Write_File::Result will be passed back to the <handler> when the asynchronous writes completes through the callback.

## Constructor & Destructor Documentation

ACE_WIN32_Asynch_Write_File::ACE_WIN32_Asynch_Write_File ( | ACE_WIN32_Proactor * win32_proactor )

| Constructor.

ACE_WIN32_Asynch_Write_File::~ACE_WIN32_Asynch_Write_File ( | void )`[virtual]`

| Destrcutor.

## Member Function Documentation

int ACE_WIN32_Asynch_Write_File::cancel ( | void )

| This cancels all pending accepts operations that were issued by the calling thread. The function does not cancel asynchronous operations issued by other threads. Reimplemented from ACE_WIN32_Asynch_Write_Stream.

int ACE_WIN32_Asynch_Write_File::open ( | ACE_Handler & handler,
| ACE_HANDLE handle,
| const void * completion_key,
| ACE_Proactor * proactor )

| Initializes the factory with information which will be used with each asynchronous call. If (<handle> == ACE_INVALID_HANDLE), will be called on the <handler> to get the correct handle. Reimplemented from ACE_WIN32_Asynch_Write_Stream.

ACE_Proactor * ACE_WIN32_Asynch_Write_File::proactor ( | void ) const

| Return the underlying proactor. Reimplemented from ACE_WIN32_Asynch_Write_Stream.

int ACE_WIN32_Asynch_Write_File::write ( | ACE_Message_Block & message_block,
| u_long bytes_to_write,
| const void * act,
| int priority,
| int signal_number = 0 )`[private]`

| This method belongs to ACE_WIN32_Asynch_Write_Stream. It is here to avoid compiler warnings. This method is forwarded to the ACE_WIN32_Asynch_Write_Stream class. Reimplemented from ACE_WIN32_Asynch_Write_Stream.

int ACE_WIN32_Asynch_Write_File::write ( | ACE_Message_Block & message_block,
| u_long bytes_to_write,
| u_long offset,
| u_long offset_high,
| const void * act,
| int priority,
| int signal_number = 0 )

| This starts off an asynchronous write. Upto <bytes_to_write> will be write and stored in the <message_block>. The write will start at <offset> from the beginning of the file.

The documentation for this class was generated from the following files:

- WIN32_Asynch_IO.h
- WIN32_Asynch_IO.cpp