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: http://www.atnf.csiro.au/computing/software/casacore/casacore-1.2.0/doc/html/classcasa_1_1StreamIO.html
Дата изменения: Unknown Дата индексирования: Mon Feb 14 21:08:26 2011 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п п |
Class for IO on connection oriented socket. More...
#include <StreamIO.h>
Public Member Functions | |
StreamIO (const String &hostname, uShort portNumber) | |
Construct a stream that is attached to the specified host on the specified portnumber. | |
virtual | ~StreamIO () |
The destructor closes the file. | |
virtual void | write (uInt size, const void *buf) |
Write the specified number of bytes. | |
virtual Int | read (uInt size, void *buf, Bool throwException=True) |
Read size bytes from the tape. | |
virtual Int64 | length () |
Get the length of the stream. | |
virtual Bool | isReadable () const |
Is the stream readabale? This function always returns True. | |
virtual Bool | isWritable () const |
Is the tape device writable? This function always returns True. | |
virtual Bool | isSeekable () const |
Is the tape device seekable? This function always returns False. | |
Protected Member Functions | |
virtual Int64 | doSeek (Int64 offset, ByteIO::SeekOption) |
Reset the position pointer to the given value. | |
Private Member Functions | |
StreamIO (const StreamIO &other) | |
The following functions are made private so that the compiler does not generate default ones. | |
StreamIO & | operator= (const StreamIO &other) |
Private Attributes | |
int | itsSockDesc |
Class for IO on connection oriented socket.
Public interface
This class is a specialization of class ByteIO . It uses a file descriptor to read/write data to a Internet (AF_INET) stream.
This class was needed for the online version of the VLA filler.
Definition at line 65 of file StreamIO.h.
Construct a stream that is attached to the specified host on the specified portnumber.
Name lookup is not currently done so that the dotted quad notation must be used.
virtual casa::StreamIO::~StreamIO | ( | ) | [virtual] |
The destructor closes the file.
casa::StreamIO::StreamIO | ( | const StreamIO & | other | ) | [private] |
The following functions are made private so that the compiler does not generate default ones.
They cannot be used and are not defined.
virtual Int64 casa::StreamIO::doSeek | ( | Int64 | offset, | |
ByteIO::SeekOption | ||||
) | [protected, virtual] |
Reset the position pointer to the given value.
It returns the new position. As stream devices are not seekable calling this function will always throw an AipsError exception.
Implements casa::ByteIO.
virtual Bool casa::StreamIO::isReadable | ( | ) | const [virtual] |
Is the stream readabale? This function always returns True.
Implements casa::ByteIO.
virtual Bool casa::StreamIO::isSeekable | ( | ) | const [virtual] |
Is the tape device seekable? This function always returns False.
Implements casa::ByteIO.
virtual Bool casa::StreamIO::isWritable | ( | ) | const [virtual] |
Is the tape device writable? This function always returns True.
Implements casa::ByteIO.
virtual Int64 casa::StreamIO::length | ( | ) | [virtual] |
Get the length of the stream.
Not a meaningful function for this class and this function always returns -1.
Implements casa::ByteIO.
Read size
bytes from the tape.
Returns the number of bytes actually read or a negative number if an error occured. Will throw an exception (AipsError) if the requested number of bytes could not be read, or an error occured, unless throwException is set to False.
Implements casa::ByteIO.
virtual void casa::StreamIO::write | ( | uInt | size, | |
const void * | buf | |||
) | [virtual] |
Write the specified number of bytes.
Implements casa::ByteIO.
int casa::StreamIO::itsSockDesc [private] |
Definition at line 110 of file StreamIO.h.