#include <Asynch_IO.h>
Inheritance diagram for ACE_Asynch_Read_Stream:
Public Member Functions | |
ACE_Asynch_Read_Stream (void) | |
A do nothing constructor. | |
virtual | ~ACE_Asynch_Read_Stream (void) |
Destructor. | |
int | open (ACE_Handler &handler, ACE_HANDLE handle=ACE_INVALID_HANDLE, const void *completion_key=0, ACE_Proactor *proactor=0) |
int | read (ACE_Message_Block &message_block, size_t num_bytes_to_read, 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_Read_Stream_Impl * | implementation_ |
Implementation class that all methods will be forwarded to. |
Once {open} is called, multiple asynchronous {read}s can started using this class. An ACE_Asynch_Read_Stream::Result will be passed back to the {handler} when the asynchronous reads completes through the {ACE_Handler::handle_read_stream} callback.
Definition at line 292 of file Asynch_IO.h.
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A do nothing constructor.
Definition at line 144 of file Asynch_IO.cpp.
00145 : implementation_ (0) 00146 { 00147 } |
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Destructor.
Definition at line 149 of file Asynch_IO.cpp.
00150 { 00151 // Delete the implementation. 00152 delete this->implementation_; 00153 this->implementation_ = 0; 00154 } |
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Return the underlying implementation class.
Implements ACE_Asynch_Operation. Reimplemented in ACE_Asynch_Read_File. Definition at line 207 of file Asynch_IO.cpp.
00208 { 00209 return this->implementation_; 00210 } |
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Initializes the factory with information which will be used with each asynchronous call.
Reimplemented from ACE_Asynch_Operation. Reimplemented in ACE_Asynch_Read_File. Definition at line 157 of file Asynch_IO.cpp. References ACE_Proactor::create_asynch_read_stream(), ACE_Asynch_Operation::get_proactor(), and ACE_Asynch_Operation::open().
00161 { 00162 // Get a proactor for/from the user. 00163 proactor = this->get_proactor (proactor, handler); 00164 00165 // Now let us get the implementation initialized. 00166 if ((this->implementation_ = proactor->create_asynch_read_stream ()) == 0) 00167 return -1; 00168 00169 // Call the <open> method of the base class. 00170 return ACE_Asynch_Operation::open (handler, 00171 handle, 00172 completion_key, 00173 proactor); 00174 } |
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This starts off an asynchronous read. Upto {bytes_to_read} will be read and stored in the {message_block}. {message_block}'s {wr_ptr} will be updated to reflect the 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. And so forth. On Win32, {priority} 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 177 of file Asynch_IO.cpp. References ACE_Asynch_Read_Stream_Impl::read().
00182 { 00183 return this->implementation_->read (message_block, 00184 bytes_to_read, 00185 act, 00186 priority, 00187 signal_number); 00188 } |
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Implementation class that all methods will be forwarded to.
Reimplemented in ACE_Asynch_Read_File. Definition at line 359 of file Asynch_IO.h. |