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iterator: Explicitly mention refcounting in docs

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Fixes #585938
This commit is contained in:
Christopher Halse Rogers 2009-06-16 11:21:42 +02:00 committed by Wim Taymans
parent 470e561216
commit 2896964ec2
1 changed files with 14 additions and 5 deletions
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19
gst/gstiterator.c
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@ -31,6 +31,10 @@
* Various GStreamer objects provide access to their internal structures using
* an iterator.
*
* In general, whenever calling a GstIterator function results in your code
* receiving a refcounted object, the refcount for that object will have been
* increased. Your code is responsible for unrefing that object after use.
*
* The basic use pattern of an iterator is as follows:
*
* <example>
@ -49,7 +53,7 @@
* gst_iterator_resync (it);
* break;
* case GST_ITERATOR_ERROR:
* ...wrong parameter were given...
* ...wrong parameters were given...
* done = TRUE;
* break;
* case GST_ITERATOR_DONE:
@ -61,7 +65,7 @@
* </programlisting>
* </example>
*
* Last reviewed on 2008-08-29 (0.10.21)
* Last reviewed on 2009-06-16 (0.10.24)
*/
#include "gst_private.h"
@ -508,7 +512,8 @@ gst_iterator_filter (GstIterator * it, GCompareFunc func, gpointer user_data)
* Folds @func over the elements of @iter. That is to say, @func will be called
* as @func (object, @ret, @user_data) for each object in @it. The normal use
* of this procedure is to accumulate the results of operating on the objects in
* @ret.
* @ret. If object is a refcounted object its refcount will be increased
* before @func is called, and it should be unrefed after use in @func.
*
* This procedure can be used (and is used internally) to implement the
* gst_iterator_foreach() and gst_iterator_find_custom() operations.
@ -573,7 +578,9 @@ foreach_fold_func (gpointer item, GValue * unused, ForeachFoldData * data)
* @user_data: user data passed to the function
*
* Iterate over all element of @it and call the given function @func for
* each element.
* each element. As in gst_iterator_fold(), the refcount of a refcounted
* object will be increased before @func is called, and should be unrefed
* after use.
*
* Returns: the result call to gst_iterator_fold(). The iterator will not be
* freed.
@ -616,7 +623,9 @@ find_custom_fold_func (gpointer item, GValue * ret, FindCustomFoldData * data)
* @user_data: user data passed to the compare function
*
* Find the first element in @it that matches the compare function @func.
* @func should return 0 when the element is found.
* @func should return 0 when the element is found. As in gst_iterator_fold(),
* the refcount of a refcounted object will be increased before @func is
* called, and should be unrefed after use.
*
* The iterator will not be freed.
*