gboolean g_io_stream_close ( GIOStream* stream, GCancellable* cancellable, GError** error )
Closes the stream, releasing resources related to it. This will also close the individual input and output streams, if they are not already closed.
Once the stream is closed, all other operations will return
G_IO_ERROR_CLOSED. Closing a stream multiple times will not
return an error.
Closing a stream will automatically flush any outstanding buffers in the stream.
Streams will be automatically closed when the last reference is dropped, but you might want to call this function to make sure resources are released as early as possible.
Some streams might keep the backing store of the stream (e.g. a file descriptor) open after the stream is closed. See the documentation for the individual stream for details.
On failure the first error that happened will be reported, but the
close operation will finish as much as possible. A stream that failed
to close will still return
G_IO_ERROR_CLOSED for all operations.
Still, it is important to check and report the error to the user,
otherwise there might be a loss of data as all data might not be written.
cancellable is not NULL, then the operation can be cancelled by
triggering the cancellable object from another thread. If the operation
was cancelled, the error
G_IO_ERROR_CANCELLED will be returned.
Cancelling a close will still leave the stream closed, but some streams
can use a faster close that doesn’t block to e.g. check errors.
The default implementation of this method just calls close on the individual input/output streams.
Available since: 2.22
The argument can be
The data is owned by the caller of the method.
The return location for a recoverable error.
The argument can be
If the return location is not
NULL, then you must initialize it to a
The argument will left initialized to
NULLby the method if there are no errors.
In case of error, the argument will be set to a newly allocated
GError; the caller will take ownership of the data, and be responsible for freeing it.