class AsyncFileReader

Read asynchronously from a file. More...

Definition#include <asyncio.hh>
InheritsAsyncFileOperator [public ]
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Detailed Description

 AsyncFileReader (EventLoop& e, int fd)

AsyncFileReader

Parameters:
eEventLoop that object should associate itself with.
fda file descriptor to read from.

 ~AsyncFileReader ()

~AsyncFileReader

void  add_buffer (uint8_t* buffer, size_t buffer_bytes, const Callback& cb)

add_buffer

Add an additional buffer for reading to.

Parameters:
bufferpointer to buffer.
buffer_bytessize of buffer in bytes.
cbCallback object to invoke when I/O is performed.

void  add_buffer_with_offset (uint8_t* buffer, size_t buffer_bytes, size_t offset, const Callback& cb)

add_buffer_with_offset

Add an additional buffer for reading to.

Parameters:
bufferpointer to buffer.
buffer_bytessize of buffer in bytes.
offsetstarting point for read operation.
cbCallback object to invoke when I/O is performed.

bool  start ()

start

Start asynchronous operation.

Returns: true on success, false if no buffers are available.

Reimplemented from AsyncFileOperator.

void  stop ()

stop

Stop asynchronous operation.

Reimplemented from AsyncFileOperator.

size_t  buffers_remaining ()

buffers_remaining

[const]

Returns: the number of buffers available.

Reimplemented from AsyncFileOperator.

void  flush_buffers ()

flush_buffers

Stop asynchronous operation and clear list of buffers.

Reimplemented from AsyncFileOperator.

BufferInfo (struct)

BufferInfo

[protected]

void  read (int fd, SelectorMask m)

read

[protected]

void  complete_transfer (int err, ssize_t done)

complete_transfer

[protected]

list<BufferInfo> _buffers

_buffers

[protected]


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