openbmc/build/tmp/deploy/sdk/witherspoon-2019-08-08/sysroots/armv6-openbmc-linux-gnueabi/usr/src/debug/glib-2.0/1_2.60.3-r0/glib-2.60.3/gio/goutputstream.c
void g_output_stream_write_async(GOutputStream* stream, const void* buffer,
                                 gsize count, int io_priority,
                                 GCancellable* cancellable,
                                 GAsyncReadyCallback callback,
                                 gpointer user_data)
{
    GOutputStreamClass* class;
    GError* error = NULL;
    GTask* task;

    g_return_if_fail(G_IS_OUTPUT_STREAM(stream));
    g_return_if_fail(buffer != NULL);

    task = g_task_new(stream, cancellable, callback, user_data);
    g_task_set_source_tag(task, g_output_stream_write_async);
    g_task_set_priority(task, io_priority);

    if (count == 0)
    {
        g_task_return_int(task, 0);
        g_object_unref(task);
        return;
    }

    if (((gssize)count) < 0)
    {
        g_task_return_new_error(task, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
                                _("Too large count value passed to %s"),
                                G_STRFUNC);
        g_object_unref(task);
        return;
    }

    if (!g_output_stream_set_pending(stream, &error))
    {
        g_task_return_error(task, error);
        g_object_unref(task);
        return;
    }

    class = G_OUTPUT_STREAM_GET_CLASS(stream);

    class->write_async(stream, buffer, count, io_priority, cancellable,
                       async_ready_write_callback_wrapper, task);
}
/**
 * g_output_stream_write_async:
 * @stream: A #GOutputStream.
 * @buffer: (array length=count) (element-type guint8): the buffer containing
 * the data to write.
 * @count: the number of bytes to write
 * @io_priority: the io priority of the request.
 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.
 * @callback: (scope async): callback to call when the request is satisfied
 * @user_data: (closure): the data to pass to callback function
 *
 * 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 g_output_stream_write_finish() to get the result of the
 * operation.
 *
 * 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.
 *
 * You are guaranteed that this method will never fail with
 * %G_IO_ERROR_WOULD_BLOCK - if @stream can't accept more data, the
 * method will just wait until this changes.
 *
 * 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 asynchronous 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
 * g_output_stream_write().
 *
 * Note that no copy of @buffer will be made, so it must stay valid
 * until @callback is called. See g_output_stream_write_bytes_async()
 * for a #GBytes version that will automatically hold a reference to
 * the contents (without copying) for the duration of the call.
 */


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 g_output_stream_write_finish() to get the result of the
operation.

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.

You are guaranteed that this method will never fail with
%G_IO_ERROR_WOULD_BLOCK - if @stream can't accept more data, the
method will just wait until this changes.

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 asynchronous 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
g_output_stream_write().

Note that no copy of @buffer will be made, so it must stay valid
until @callback is called. See g_output_stream_write_bytes_async()
for a #GBytes version that will automatically hold a reference to
the contents (without copying) for the duration of the call.
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 g_output_stream_write_finish () to get the result of the operation . 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 . You are guaranteed that this method will never fail with %G_IO_ERROR_WOULD_BLOCK - if @stream can ' t accept more data the method will just wait until this changes . 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 asynchronous 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 g_output_stream_write () . Note that no copy of @buffer will be made so it must stay valid until @callback is called . See g_output_stream_write_bytes_async () for a #GBytes version that will automatically hold a reference to the contents ( without copying ) for the duration of the call .
void g_output_stream_write_async(GOutputStream* stream, const void* buffer,
                                 gsize count, int io_priority,
                                 GCancellable* cancellable,
                                 GAsyncReadyCallback callback,
                                 gpointer user_data)
{
    GOutputStreamClass* class;
    GError* error = NULL;
    GTask* task;
    g_return_if_fail(G_IS_OUTPUT_STREAM(stream));
    g_return_if_fail(buffer != NULL);
    task = g_task_new(stream, cancellable, callback, user_data);
    g_task_set_source_tag(task, g_output_stream_write_async);
    g_task_set_priority(task, io_priority);
    if (count == 0)
    {
        g_task_return_int(task, 0);
        g_object_unref(task);
        return;
    }
    if (((gssize)count) < 0)
    {
        g_task_return_new_error(task, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
                                _("Too large count value passed to %s"),
                                G_STRFUNC);
        g_object_unref(task);
        return;
    }
    if (!g_output_stream_set_pending(stream, &error))
    {
        g_task_return_error(task, error);
        g_object_unref(task);
        return;
    }
    class = G_OUTPUT_STREAM_GET_CLASS(stream);
    class->write_async(stream, buffer, count, io_priority, cancellable,
                       async_ready_write_callback_wrapper, task);
}
void g_output_stream_write_async ( GOutputStream * stream , const void * buffer , gsize count , int io_priority , GCancellable * cancellable , GAsyncReadyCallback callback , gpointer user_data ) { GOutputStreamClass * class ; GError * error = NULL ; GTask * task ; g_return_if_fail ( G_IS_OUTPUT_STREAM ( stream ) ) ; g_return_if_fail ( buffer != NULL ) ; task = g_task_new ( stream , cancellable , callback , user_data ) ; g_task_set_source_tag ( task , g_output_stream_write_async ) ; g_task_set_priority ( task , io_priority ) ; if ( count == 0 ) { g_task_return_int ( task , 0 ) ; g_object_unref ( task ) ; return ; } if ( ( ( gssize ) count ) < 0 ) { g_task_return_new_error ( task , G_IO_ERROR , G_IO_ERROR_INVALID_ARGUMENT , _ ( " " ) , G_STRFUNC ) ; g_object_unref ( task ) ; return ; } if ( ! g_output_stream_set_pending ( stream , & error ) ) { g_task_return_error ( task , error ) ; g_object_unref ( task ) ; return ; } class = G_OUTPUT_STREAM_GET_CLASS ( stream ) ; class -> write_async ( stream , buffer , count , io_priority , cancellable , async_ready_write_callback_wrapper , task ) ; }
g_output_stream_write_async:
 @stream: A #GOutputStream.
g_output_stream_write_async : @stream : A #GOutputStream .