gio/ docs/reference/gio Merged gio-standalone into glib.

2007-11-26  Alexander Larsson  <alexl@redhat.com>

        * Makefile.am:
        * configure.in:
        * gio-2.0-uninstalled.pc.in:
        * gio-2.0.pc.in: 
        * gio-unix-2.0-uninstalled.pc.in:
        * gio-unix-2.0.pc.in:
	* gio/
	* docs/reference/gio
	Merged gio-standalone into glib.
	
        * glib/glibintl.h:
        * glib/gutils.c:
	Export glib_gettext so that gio can use it
	Add P_ (using same domain for now)
	Add I_ as g_intern_static_string


svn path=/trunk/; revision=5941

gio/gasynchelper.c

@@ -0,0 +1,163 @@
+/* GIO - GLib Input, Output and Streaming Library
+ * 
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Alexander Larsson <alexl@redhat.com>
+ */
+
+#include <config.h>
+
+#include "gasynchelper.h"
+
+static void
+async_result_free (gpointer data)
+{
+  GAsyncResultData *res = data;
+
+  if (res->error)
+    g_error_free (res->error);
+
+  g_object_unref (res->async_object);
+  
+  g_free (res);
+}
+
+void
+_g_queue_async_result (GAsyncResultData *result,
+		       gpointer        async_object,
+		       GError         *error,
+		       gpointer        user_data,
+		       GSourceFunc     source_func)
+{
+  GSource *source;
+
+  g_return_if_fail (G_IS_OBJECT (async_object));
+  
+  result->async_object = g_object_ref (async_object);
+  result->user_data = user_data;
+  result->error = error;
+
+  source = g_idle_source_new ();
+  g_source_set_priority (source, G_PRIORITY_DEFAULT);
+  g_source_set_callback (source, source_func, result, async_result_free);
+  g_source_attach (source, NULL);
+  g_source_unref (source);
+}
+
+/*************************************************************************
+ *             fd source                                                 *
+ ************************************************************************/
+
+typedef struct 
+{
+  GSource source;
+  GPollFD pollfd;
+  GCancellable *cancellable;
+  gulong cancelled_tag;
+} FDSource;
+
+static gboolean 
+fd_source_prepare (GSource  *source,
+		   gint     *timeout)
+{
+  FDSource *fd_source = (FDSource *)source;
+  *timeout = -1;
+  
+  return g_cancellable_is_cancelled (fd_source->cancellable);
+}
+
+static gboolean 
+fd_source_check (GSource  *source)
+{
+  FDSource *fd_source = (FDSource *)source;
+
+  return
+    g_cancellable_is_cancelled  (fd_source->cancellable) ||
+    fd_source->pollfd.revents != 0;
+}
+
+static gboolean
+fd_source_dispatch (GSource     *source,
+		    GSourceFunc  callback,
+		    gpointer     user_data)
+
+{
+  GFDSourceFunc func = (GFDSourceFunc)callback;
+  FDSource *fd_source = (FDSource *)source;
+
+  g_assert (func != NULL);
+
+  return (*func) (user_data, fd_source->pollfd.revents, fd_source->pollfd.fd);
+}
+
+static void 
+fd_source_finalize (GSource *source)
+{
+  FDSource *fd_source = (FDSource *)source;
+
+  if (fd_source->cancelled_tag)
+    g_signal_handler_disconnect (fd_source->cancellable,
+				 fd_source->cancelled_tag);
+
+  if (fd_source->cancellable)
+    g_object_unref (fd_source->cancellable);
+}
+
+static GSourceFuncs fd_source_funcs = {
+  fd_source_prepare,
+  fd_source_check,
+  fd_source_dispatch,
+  fd_source_finalize
+};
+
+/* Might be called on another thread */
+static void
+fd_source_cancelled_cb (GCancellable *cancellable,
+			gpointer data)
+{
+  /* Wake up the mainloop in case we're waiting on async calls with FDSource */
+  g_main_context_wakeup (NULL);
+}
+
+GSource *
+_g_fd_source_new (int fd,
+		  gushort events,
+		  GCancellable *cancellable)
+{
+  GSource *source;
+  FDSource *fd_source;
+
+  source = g_source_new (&fd_source_funcs, sizeof (FDSource));
+  fd_source = (FDSource *)source;
+
+  if (cancellable)
+    fd_source->cancellable = g_object_ref (cancellable);
+  
+  fd_source->pollfd.fd = fd;
+  fd_source->pollfd.events = events;
+  g_source_add_poll (source, &fd_source->pollfd);
+
+  if (cancellable)
+    fd_source->cancelled_tag =
+      g_signal_connect_data (cancellable, "cancelled",
+			     (GCallback)fd_source_cancelled_cb,
+			     NULL, NULL,
+			     0);
+  
+  return source;
+}