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ACE 6.0.5
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This class is a factory for starting off asynchronous reads on a UDP socket. More...
#include <POSIX_Asynch_IO.h>


Public Member Functions | |
| ACE_POSIX_Asynch_Read_Dgram (ACE_POSIX_Proactor *posix_proactor) | |
| Constructor. | |
| virtual | ~ACE_POSIX_Asynch_Read_Dgram (void) |
| virtual ssize_t | recv (ACE_Message_Block *message_block, size_t &number_of_bytes_recvd, int flags, int protocol_family, const void *act, int priority, int signal_number) |
Protected Member Functions | |
| ACE_POSIX_Asynch_Read_Dgram (void) | |
| Do-nothing constructor. | |
This class is a factory for starting off asynchronous reads on a UDP socket.
Once <open> is called, multiple asynchronous <read>s can be started using this class. An ACE_Asynch_Read_Dgram::Result will be passed back to the <handler> when the asynchronous reads completes through the <ACE_Handler::handle_read_stream> callback.
| ACE_POSIX_Asynch_Read_Dgram::ACE_POSIX_Asynch_Read_Dgram | ( | ACE_POSIX_Proactor * | posix_proactor | ) |
Constructor.
| ACE_POSIX_Asynch_Read_Dgram::~ACE_POSIX_Asynch_Read_Dgram | ( | void | ) | [virtual] |
| ACE_POSIX_Asynch_Read_Dgram::ACE_POSIX_Asynch_Read_Dgram | ( | void | ) | [protected] |
Do-nothing constructor.
| ssize_t ACE_POSIX_Asynch_Read_Dgram::recv | ( | ACE_Message_Block * | message_block, |
| size_t & | number_of_bytes_recvd, | ||
| int | flags, | ||
| int | protocol_family, | ||
| const void * | act, | ||
| int | priority, | ||
| int | signal_number | ||
| ) | [virtual] |
This method queues an asynchronous read. Up to message_block->total_size() bytes will be read and stored in the message_block beginning at its write pointer. The message_block write pointer will be updated to reflect any added bytes if the read operation is successful completed. 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. signal_number argument is a no-op on non-POSIX4 systems.
| 0 | The IO will complete asynchronously. |
| -1 | There was an error; see errno to get the error code. |
Implements ACE_Asynch_Read_Dgram_Impl.
1.7.4