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GVariant: add g_variant_take_ref()

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This function implements the following logic:

  if (g_variant_is_floating (value))
    g_variant_ref_sink (value);

which is used for consuming the return value of callbacks that may or
may not return floating references.

This patch also replaces a few instances of the above code with the new
function (GSettings, GDBus) and lifts a long-standing restriction on the
use of floating values as the return value for signal handlers by
improving g_value_take_variant().

https://bugzilla.gnome.org/show_bug.cgi?id=627974
This commit is contained in:
Ryan Lortie
2011-07-11 14:27:53 +02:00
parent 2121e56ea7
commit 58c247e51b
8 changed files with 64 additions and 16 deletions
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3
gio/gdbus-codegen/codegen.py
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@ -2031,8 +2031,7 @@ class CodeGenerator:
' value = _%s_skeleton_handle_get_property (g_dbus_interface_skeleton_get_connection (G_DBUS_INTERFACE_SKELETON (skeleton)), NULL, g_dbus_interface_skeleton_get_object_path (G_DBUS_INTERFACE_SKELETON (skeleton)), "%s", info->name, NULL, skeleton);\n'
' if (value != NULL)\n'
' {\n'
' if (g_variant_is_floating (value))\n'
' g_variant_ref_sink (value);\n'
' g_variant_take_ref (value);\n'
' g_variant_builder_add (&builder, "{sv}", info->name, value);\n'
' g_variant_unref (value);\n'
' }\n'