[glib] Add g_output_stream_is_closing

[Alexander Larsson <alexl src gnome org>]

commit afe3324fcac8ea2a6b6007c938d7974aa923c0d3
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Nov 23 15:02:50 2009 +0100

    Add g_output_stream_is_closing
    
    Need this to check how we're flushing when closing a converter
    output stream.

 gio/goutputstream.c |   29 ++++++++++++++++++++++++++++-
 gio/goutputstream.h |    1 +
 2 files changed, 29 insertions(+), 1 deletions(-)
---
diff --git a/gio/goutputstream.c b/gio/goutputstream.c
index 3406b29..38d5419 100644
--- a/gio/goutputstream.c
+++ b/gio/goutputstream.c
@@ -51,6 +51,7 @@ G_DEFINE_TYPE (GOutputStream, g_output_stream, G_TYPE_OBJECT);
 struct _GOutputStreamPrivate {
   guint closed : 1;
   guint pending : 1;
+  guint closing : 1;
   GAsyncReadyCallback outstanding_callback;
 };
 
@@ -520,6 +521,8 @@ g_output_stream_close (GOutputStream  *stream,
   if (!g_output_stream_set_pending (stream, error))
     return FALSE;
 
+  stream->priv->closing = TRUE;
+
   if (cancellable)
     g_cancellable_push_current (cancellable);
 
@@ -545,7 +548,8 @@ g_output_stream_close (GOutputStream  *stream,
   
   if (cancellable)
     g_cancellable_pop_current (cancellable);
-  
+
+  stream->priv->closing = FALSE;
   stream->priv->closed = TRUE;
   g_output_stream_clear_pending (stream);
   
@@ -572,6 +576,7 @@ async_ready_close_callback_wrapper (GObject      *source_object,
 {
   GOutputStream *stream = G_OUTPUT_STREAM (source_object);
 
+  stream->priv->closing = FALSE;
   stream->priv->closed = TRUE;
   g_output_stream_clear_pending (stream);
   if (stream->priv->outstanding_callback)
@@ -982,6 +987,7 @@ g_output_stream_close_async (GOutputStream       *stream,
     }
   
   class = G_OUTPUT_STREAM_GET_CLASS (stream);
+  stream->priv->closing = TRUE;
   stream->priv->outstanding_callback = callback;
   g_object_ref (stream);
   class->close_async (stream, io_priority, cancellable,
@@ -1042,6 +1048,27 @@ g_output_stream_is_closed (GOutputStream *stream)
 }
 
 /**
+ * g_output_stream_is_closing:
+ * @stream: a #GOutputStream.
+ *
+ * Checks if an output stream is being closed. This can be
+ * used inside e.g. a flush implementation to see if the
+ * flush (or other i/o operation) is called from within
+ * the closing operation.
+ *
+ * Returns: %TRUE if @stream is being closed. %FALSE otherwise.
+ *
+ * Since: 2.24
+ **/
+gboolean
+g_output_stream_is_closing (GOutputStream *stream)
+{
+  g_return_val_if_fail (G_IS_OUTPUT_STREAM (stream), TRUE);
+
+  return stream->priv->closing;
+}
+
+/**
  * g_output_stream_has_pending:
  * @stream: a #GOutputStream.
  * 
diff --git a/gio/goutputstream.h b/gio/goutputstream.h
index e9f3160..e28bded 100644
--- a/gio/goutputstream.h
+++ b/gio/goutputstream.h
@@ -195,6 +195,7 @@ gboolean g_output_stream_close_finish  (GOutputStream             *stream,
 					GError                   **error);
 
 gboolean g_output_stream_is_closed     (GOutputStream             *stream);
+gboolean g_output_stream_is_closing    (GOutputStream             *stream);
 gboolean g_output_stream_has_pending   (GOutputStream             *stream);
 gboolean g_output_stream_set_pending   (GOutputStream             *stream,
 					GError                   **error);