#include <WIN32_Asynch_IO.h>
Inheritance diagram for ACE_WIN32_Asynch_Transmit_File:
Public Member Functions | |
ACE_WIN32_Asynch_Transmit_File (ACE_WIN32_Proactor *win32_proactor) | |
Constructor. | |
int | transmit_file (ACE_HANDLE file, ACE_Asynch_Transmit_File::Header_And_Trailer *header_and_trailer, size_t bytes_to_write, u_long offset, u_long offset_high, size_t bytes_per_send, u_long flags, const void *act, int priority, int signal_number=0) |
~ACE_WIN32_Asynch_Transmit_File (void) | |
Destructor. | |
int | open (const ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE handle, const void *completion_key, ACE_Proactor *proactor) |
int | cancel (void) |
ACE_Proactor * | proactor (void) const |
Return the underlying proactor. |
Once <open> is called, multiple asynchronous <transmit_file>s can started using this class. A ACE_Asynch_Transmit_File::Result will be passed back to the <handler> when the asynchronous transmit file completes through the <ACE_Handler::handle_transmit_file> callback.
The transmit_file function transmits file data over a connected network connection. The function uses the operating system's cache manager to retrieve the file data. This function provides high-performance file data transfer over network connections. This function would be of great use in a Web Server, Image Server, etc.
ACE_WIN32_Asynch_Transmit_File::ACE_WIN32_Asynch_Transmit_File | ( | ACE_WIN32_Proactor * | win32_proactor | ) |
Constructor.
ACE_WIN32_Asynch_Transmit_File::~ACE_WIN32_Asynch_Transmit_File | ( | void | ) |
Destructor.
int ACE_WIN32_Asynch_Transmit_File::cancel | ( | void | ) | [virtual] |
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_Operation.
int ACE_WIN32_Asynch_Transmit_File::open | ( | const ACE_Handler::Proxy_Ptr & | handler_proxy, | |
ACE_HANDLE | handle, | |||
const void * | completion_key, | |||
ACE_Proactor * | proactor | |||
) | [virtual] |
Initializes the factory with information which will be used with each asynchronous call. If (<handle> == ACE_INVALID_HANDLE), <ACE_Handler::handle> will be called on the <handler> to get the correct handle.
Reimplemented from ACE_WIN32_Asynch_Operation.
ACE_Proactor * ACE_WIN32_Asynch_Transmit_File::proactor | ( | void | ) | const [virtual] |
int ACE_WIN32_Asynch_Transmit_File::transmit_file | ( | ACE_HANDLE | file, | |
ACE_Asynch_Transmit_File::Header_And_Trailer * | header_and_trailer, | |||
size_t | bytes_to_write, | |||
u_long | offset, | |||
u_long | offset_high, | |||
size_t | bytes_per_send, | |||
u_long | flags, | |||
const void * | act, | |||
int | priority, | |||
int | signal_number = 0 | |||
) | [virtual] |
This starts off an asynchronous transmit file. The <file> is a handle to an open file. <header_and_trailer> is a pointer to a data structure that contains pointers to data to send before and after the file data is sent. Set this parameter to 0 if you only want to transmit the file data. Upto <bytes_to_write> will be written to the <socket>. If you want to send the entire file, let <bytes_to_write> = 0. <bytes_per_send> is the size of each block of data sent per send operation. Please read the Win32 documentation on what the flags should be.
Implements ACE_Asynch_Transmit_File_Impl.