gboolean g_output_stream_close ( GOutputStream* stream, GCancellable* cancellable, GError** error )
Closes the stream, releasing resources related to it.
Once the stream is closed, all other operations will return
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 there some streams
can use a faster close that doesn’t block to e.g. check errors. On
cancellation (as with any error) there is no guarantee that all written
data will reach the target.
Optional cancellable object.
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.