#include <Asynch_IO.h>
Inheritance diagram for ACE_Asynch_Write_Dgram:
Public Member Functions | |
ACE_Asynch_Write_Dgram (void) | |
A do nothing constructor. | |
virtual | ~ACE_Asynch_Write_Dgram (void) |
Destructor. | |
int | open (ACE_Handler &handler, ACE_HANDLE handle=ACE_INVALID_HANDLE, const void *completion_key=0, ACE_Proactor *proactor=0) |
ssize_t | send (ACE_Message_Block *message_block, size_t &number_of_bytes_sent, int flags, const ACE_Addr &remote_addr, const void *act=0, int priority=0, int signal_number=ACE_SIGRTMIN) |
virtual ACE_Asynch_Operation_Impl * | implementation (void) const |
Return the underlying implementation class. | |
Protected Attributes | |
ACE_Asynch_Write_Dgram_Impl * | implementation_ |
Implementation class that all methods will be forwarded to. |
Once {open} is called, multiple asynchronous {writes}s can started using this class. An ACE_Asynch_Write_Dgram::Result will be passed back to the {handler} when the asynchronous write completes through the {ACE_Handler::handle_write_dgram} callback.
Definition at line 1391 of file Asynch_IO.h.
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A do nothing constructor.
Definition at line 1235 of file Asynch_IO.cpp.
01236 : implementation_ (0) 01237 { 01238 } |
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Destructor.
Definition at line 1240 of file Asynch_IO.cpp.
01241 { 01242 // Delete the implementation. 01243 delete this->implementation_; 01244 this->implementation_ = 0; 01245 } |
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Return the underlying implementation class.
Implements ACE_Asynch_Operation. Definition at line 1286 of file Asynch_IO.cpp.
01287 { 01288 return this->implementation_; 01289 } |
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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_Asynch_Operation. Definition at line 1248 of file Asynch_IO.cpp. References ACE_Proactor::create_asynch_write_dgram(), ACE_Asynch_Operation::get_proactor(), and ACE_Asynch_Operation::open().
01252 { 01253 // Get a proactor for/from the user. 01254 proactor = this->get_proactor (proactor, handler); 01255 01256 // Now let us get the implementation initialized. 01257 if ((this->implementation_ = proactor->create_asynch_write_dgram ()) == 0) 01258 return -1; 01259 01260 // Call the <open> method of the base class. 01261 return ACE_Asynch_Operation::open (handler, 01262 handle, 01263 completion_key, 01264 proactor); 01265 } |
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This starts off an asynchronous send. Upto {message_block->total_length()} will be sent. {message_block}'s {rd_ptr} will be updated to reflect the sent bytes if the send operation is successfully completed. Return code of 1 means immediate success and {number_of_bytes_sent} is updated to number of bytes sent. The {ACE_Handler::handle_write_dgram} method will still be called. Return code of 0 means the IO will complete proactively. Return code of -1 means there was an error, use errno to get the error code. Scatter/gather is supported on WIN32 by using the {message_block->cont()} method. Up to ACE_IOV_MAX {message_block}'s are supported. Upto {message_block->length()} bytes will be sent from each {message block} for a total of {message_block->total_length()} bytes. All {message_block}'s {rd_ptr}'s will be updated to reflect the bytes sent from each {message_block}. Priority of the operation is specified by {priority}. On POSIX4-Unix, this is supported. Works like {nice} in Unix. Negative values are not allowed. 0 means priority of the operation same as the process priority. 1 means priority of the operation is one less than process. And so forth. On Win32, this argument is a no-op. {signal_number} is the POSIX4 real-time signal number to be used for the operation. {signal_number} ranges from ACE_SIGRTMIN to ACE_SIGRTMAX. This argument is a no-op on non-POSIX4 systems. Definition at line 1268 of file Asynch_IO.cpp. References ACE_Asynch_Write_Dgram_Impl::send().
01275 { 01276 return this->implementation_->send (message_block, 01277 number_of_bytes_sent, 01278 flags, 01279 remote_addr, 01280 act, 01281 priority, 01282 signal_number); 01283 } |
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Implementation class that all methods will be forwarded to.
Definition at line 1452 of file Asynch_IO.h. |