gOutputStreamWriteAsync: gOutputStreamWriteAsync
Description
Request an asynchronous write of count
bytes from buffer
into
the stream. When the operation is finished callback
will be called.
You can then call gOutputStreamWriteFinish
to get the result of the
operation.Usage
gOutputStreamWriteAsync(object, buffer, io.priority = 0, cancellable = NULL, callback, user.data = NULL)
Arguments
buffer
the buffer containing the data to write.
io.priority
the io priority of the request.
callback
callback to call when the request is satisfied
user.data
the data to pass to callback function
Details
During an async request no other sync and async calls are allowed,
and will result in G_IO_ERROR_PENDING
errors.
A value of count
larger than G_MAXSSIZE
will cause a
G_IO_ERROR_INVALID_ARGUMENT
error.
On success, the number of bytes written will be passed to the
callback
. It is not an error if this is not the same as the
requested size, as it can happen e.g. on a partial I/O error,
but generally we try to write as many bytes as requested.
Any outstanding I/O request with higher priority (lower numerical
value) will be executed before an outstanding request with lower
priority. Default priority is G_PRIORITY_DEFAULT
.
The asyncronous methods have a default fallback that uses threads
to implement asynchronicity, so they are optional for inheriting
classes. However, if you override one you must override all.
For the synchronous, blocking version of this function, see
gOutputStreamWrite
.