API: gst_mini_object_weak_ref()
API: gst_mini_object_weak_unref()
Add weak referencing functionality to GstMiniObject, which
allows to get notifications when an mini object is destroyed
but doesn't increase the real refcount. This is mostly
useful for bindings.
Fixes bug #609473.
gst_mini_object_unref() has guards that check the type already, so
we don't really need to re-check it here again while getting the
class (there's not really much point to that anyway, since we don't
check the return value of the get_class, so we'd crash anyway if
we're not dealing with a mini object, the only question would
be if there'd be a warning before the crash or not).
This is not really necessary here because everything is
initialized from gst_init() already but using G_DEFINE_TYPE()
removes some copy&paste boilerplate code.
This makes it possible to easily get a *:5 debug log without all
the refcounting noise, and drastically reduces the number of lines
output for a normal log (46m to 28m for a 20min video). The full log
including refcounting information can still be gotten using *:7.
Fixes#620460.
This changes some APIs in compatible ways:
- Some functions now take "const char *" arguments, not "char *"
- Some structs now have "conts char *" members, not "char *"
The changes may cause warnings when compiling with the right warning
flags. You've been warned.
Also adds -Wwrite-strings as a warning flag in configure.ac.
https://bugzilla.gnome.org/show_bug.cgi?id=611692
Avoid a race where a miniobject is recycled and quickly freed, which causes the
g_type_free_instance() to be called on the same object twice.
Ref the object before calling the finalize method and check if we still need to
free it afterward.
Also add a unit test for this case.
Fixes#601587
Original commit message from CVS:
* gst/gstminiobject.c: (gst_value_get_mini_object):
Fix 'Since:' version in gst_value_dup_mini_object() docs blurb: this
function was not in the unscheduled 0.10.19 release.
Original commit message from CVS:
* gst/gstminiobject.c: (gst_value_dup_mini_object),
(gst_param_spec_mini_object):
* gst/gstminiobject.h:
* win32/common/libgstreamer.def:
* docs/gst/gstreamer-sections.txt:
API: Add GST_IS_PARAM_SPEC_MINI_OBJECT, GST_PARAM_SPEC_MINI_OBJECT
GST_TYPE_PARAM_MINI_OBJECT and gst_value_dup_mini_object. Also move
GstParamSpecMiniObject into a public header for this.
This make GstMiniObject a bit more consistent with GObject and makes
it possible to extend the param specs.
gst_value_dup_mini_object is mainly useful for set_property methods.
Fixes bug #523798.
* tools/gst-inspect.c: (print_element_properties_info):
Print something useful for GstMiniObject properties and not just
"unknown type".
Original commit message from CVS:
* gst/gstminiobject.c:
Import gst_private.h before any other header that might include other
glib headers. This fixes the build on windows using native compilers.
Original commit message from CVS:
* gst/gstminiobject.c:
Add FIXME for 0.11 to make GstMiniObjectClass::copy() a bit more
friendly to subclasses and not require them to know all internals
of their parent class.
Original commit message from CVS:
* gst/gstminiobject.c: (gst_mini_object_replace):
When replacing a miniobject, do a quick equality check first so that we
can avoid a ref/unref pair.
Original commit message from CVS:
* gst/gstminiobject.c: (gst_mini_object_get_type),
(gst_mini_object_class_init), (gst_mini_object_copy_default),
(gst_mini_object_finalize), (gst_mini_object_copy),
(gst_mini_object_is_writable), (gst_mini_object_make_writable),
(gst_mini_object_replace), (param_mini_object_validate),
(gst_param_spec_mini_object_get_type):
Some cleanup and checking against invalid function parameters.
Original commit message from CVS:
* gst/gst.c: (ensure_current_registry_forking):
Ignore EINTR when reading from the child registry pipe.
Explicitly ignore the return value from close, since it makes no
difference.
* gst/gstminiobject.c: (gst_mini_object_ref),
(gst_mini_object_unref):
When debugging refcounts, check GST_IS_MINI_OBJECT and warn.
* gst/gstregistry.c: (_priv_gst_registry_remove_cache_plugins):
When removing cached plugins, remove their features too, so they're
not visible after they've disappeared.
* gst/gstutils.c: (prepare_link_maybe_ghosting):
In the unlikely case that we are linking pads with no parents, don't
crash trying to get the non-existent parent bin.
* gst/parse/grammar.y:
Output debug in the PIPELINE category
Original commit message from CVS:
* gst/gstminiobject.c:
update docs
* plugins/elements/gstfdsrc.c: (gst_fd_src_set_property),
(gst_fd_src_create):
log recurring events at LOG level
add more debug for when the fd gets set
Original commit message from CVS:
* gst/gstbuffer.h:
* gst/gstminiobject.c:
Add note about refcounting and miniobject/buffer writeability
to docs. Fixes#340604
* gst/gstelementfactory.h:
Added some explanation about @klass.
Original commit message from CVS:
* gst/gstminiobject.c: (gst_value_take_mini_object):
Taking a NULL miniobject is valid, fix the case where
we try to unref the NULL miniobject.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_get_type), (gst_bin_handle_message_func):
Help the compiler a bit with type registration.
Use existing forward cod path instead of duplicating it when
handling a message.
* gst/gstbus.c: (gst_bus_get_type):
* gst/gstcaps.c: (gst_caps_get_type), (gst_static_caps_get_type):
* gst/gstchildproxy.c: (gst_child_proxy_get_type):
* gst/gstclock.c: (gst_clock_get_type):
* gst/gstelement.c: (gst_element_get_type),
* gst/gstelementfactory.c: (gst_element_factory_get_type):
* gst/gstindexfactory.c: (gst_index_factory_get_type):
* gst/gstminiobject.c: (gst_mini_object_get_type):
* gst/gstpad.c: (gst_pad_get_type):
* gst/gstsegment.c: (gst_segment_get_type):
* gst/gststructure.c: (gst_structure_get_type):
* gst/gstsystemclock.c: (gst_system_clock_get_type):
* gst/gsttask.c: (gst_task_get_type), (gst_task_join):
* gst/gstvalue.c:
Help compiler with type registration.
* plugins/elements/gstqueue.c: (gst_queue_handle_sink_event):
Small doc update.
Original commit message from CVS:
* gst/gstminiobject.c: (gst_value_mini_object_lcopy):
Fix lcopy for mini objects, the mini object needs to be ref'ed.
* tests/check/gst/gstminiobject.c: (my_foo_init),
(my_foo_get_property), (my_foo_set_property), (my_foo_class_init),
(test_value_collection), (gst_mini_object_suite):
Add test to ensure refcounts end up as expected when passing
GstMiniObjects through g_object_get() and g_object_set().
Original commit message from CVS:
* gst/gstbuffer.c:
Small docs update.
* gst/gstcaps.c: (gst_caps_is_equal):
Don't assert on NULL <--> X. Fixes#323260
* gst/gstminiobject.c: (gst_mini_object_replace):
If we're doing atomic operations, we might just as well use
the proper way to get an atomic pointer.
* libs/gst/base/gstbasesink.c: (gst_base_sink_get_position):
Clean up debugging.
Original commit message from CVS:
* gst/gstbuffer.c: (_gst_buffer_copy):
Copy more flags.
* gst/gstcaps.c: (gst_caps_is_equal):
Fix some docs.
Make _is_equal fast in the trivial cases.
* gst/gstminiobject.c:
* gst/gstminiobject.h:
More docs. Spifify .h file.
* gst/gstutils.c:
Small doc update.
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
move some macros to private sections
* gst/gstminiobject.c:
* gst/gstminiobject.h:
add descriptions provided by ds and some more
* gst/gstpad.h:
mark macro as to be removed
Original commit message from CVS:
* docs/gst/Makefile.am: Ignore a few more internal headers
* docs/gst/gstreamer-docs.sgml: Remove old sections
* docs/gst/gstreamer-sections.txt: Remove old sections
* docs/gst/tmpl/gstobject.sgml: update
* docs/gst/tmpl/gstplugin.sgml: update
* docs/gst/tmpl/gstpluginfeature.sgml: update
* docs/random/ds/0.9-suggested-changes: update.
* gst/Makefile.am: remove memchunk and trashstack, since they're
not used.
* gst/gst.c: (gst_deinit): rename gst_registry_deinit to _cleanup
* gst/gst.h: don't include some headers
* gst/gstchildproxy.c: add gstmarshal.h
* gst/gstclock.c: Don't use memchunks
* gst/gstminiobject.c: Add some docs
* gst/gstobject.c: remove DESTROYED flag, since it's redundant
* gst/gstobject.h: same
* gst/gstplugin.c: include gstmacros.h
* gst/gstplugin.h: don't include gstmacros.h, since it's private
* gst/gstquery.c: don't use memchunks
* gst/gstregistry.c: rename gst_registry_deinit()
* gst/gstregistry.h: same
Original commit message from CVS:
* gst/gstminiobject.c: (gst_mini_object_ref):
Cannot assert that the refcount has to be positive
since a disposed object can be resurected.
Original commit message from CVS:
* gst/base/gstadapter.c: (gst_adapter_flush):
Flushing out 0 bytes is ok for this function.
* gst/base/gstbasesink.c: (gst_base_sink_handle_object):
no newsegment gives a warning and sets the start/stop to
invalid.
* gst/base/gstbasetransform.c: (gst_base_transform_change_state),
(gst_base_transform_set_passthrough):
Some debug info.
* gst/gstminiobject.c: (gst_mini_object_ref):
Check refcount here too.
* gst/gstpad.c: (gst_pad_init):
Pads are initially flushing and refusing data.
* gst/gstutils.c: (gst_element_link_pads_filtered):
When adding a capsfilter element make sure it has the
same state as the parent bin.
Original commit message from CVS:
* check/Makefile.am:
add two more tests for valgrinding
* check/gst/gstvalue.c: (GST_START_TEST):
test refcount of deserialized buffer, found a leak
* docs/gst/gstreamer-docs.sgml:
* docs/gst/gstreamer-sections.txt:
* docs/gst/gstreamer.types:
* docs/gst/tmpl/gstminiobject.sgml:
add miniobject to docs
* gst/gstminiobject.c:
add some docs
* gst/gstvalue.c: (gst_value_deserialize_buffer),
(gst_string_unwrap):
fix a hard-to-find invalid write for one of the tests
fix a leak for deserialized buffers
Original commit message from CVS:
2005-06-27 Andy Wingo <wingo@pobox.com>
* gst/base/gsttypefindhelper.c (gst_type_find_helper): Unref any
remaining buffer.
* gst/gsttrace.c (gst_alloc_trace_list_sorted): New helper,
returns a sorted copy of the trace list.
(gst_alloc_trace_print_live): New API, only prints traces with
live objects. Sort the list.
(gst_alloc_trace_print_all): Sort the list.
(gst_alloc_trace_print): Align columns.
* gst/elements/gstttypefindelement.c:
* gst/elements/gsttee.c:
* gst/base/gstbasesrc.c:
* gst/base/gstbasesink.c:
* gst/base/gstbasetransform.c:
* gst/gstqueue.c: Adapt for pad activation changes.
* gst/gstpipeline.c (gst_pipeline_init): Unref after parenting
sched.
(gst_pipeline_dispose): Drop ref on sched.
* gst/gstpad.c (gst_pad_init): Set the default activate func.
(gst_pad_activate_default): Push mode by default.
(pre_activate_switch, post_activate_switch): New stubs, things to
do before and after switching activation modes on pads.
(gst_pad_set_active): Take a boolean and not a mode, dispatch to
the pad's activate function to choose which mode to activate.
Shortcut on deactivation and call the right function directly.
(gst_pad_activate_pull): New API, (de)activates a pad in pull
mode.
(gst_pad_activate_push): New API, same for push mode.
(gst_pad_set_activate_function)
(gst_pad_set_activatepull_function)
(gst_pad_set_activatepush_function): Setters for new API.
* gst/gstminiobject.c (gst_mini_object_new, gst_mini_object_free):
Trace all miniobjects.
(gst_mini_object_make_writable): Unref the arg if we copy, like
gst_caps_make_writable.
* gst/gstmessage.c (_gst_message_initialize): No trace init.
* gst/gstghostpad.c (gst_proxy_pad_do_activate)
(gst_proxy_pad_do_activatepull, gst_proxy_pad_do_activatepush):
Adapt for new pad API.
* gst/gstevent.c (_gst_event_initialize): Don't initialize trace.
* gst/gstelement.h:
* gst/gstelement.c (gst_element_iterate_src_pads)
(gst_element_iterate_sink_pads): New API functions.
* gst/gstelement.c (iterator_fold_with_resync): New utility,
should fold into gstiterator.c in some form.
(gst_element_pads_activate): Simplified via use of fold and
delegation of decisions to gstpad->activate.
* gst/gstbus.c (gst_bus_source_finalize): Set the bus to NULL,
help in debugging.
* gst/gstbuffer.c (_gst_buffer_initialize): Ref the buffer type
class once in init, like gstmessage. Didn't run into this issue
but it seems correct. Don't initialize a trace, gstminiobject does
that.
* check/pipelines/simple_launch_lines.c (test_stop_from_app): New
test, runs fakesrc ! fakesink, stopping on ::handoff via a message
to the bus.
(assert_live_count): New util function, uses alloc traces to check
cleanup.
* check/gst/gstghostpad.c (test_ghost_pads): More refcount checks.
To be modified when unlink drops the internal pad.
Original commit message from CVS:
2005-05-26 Andy Wingo <wingo@pobox.com>
* gst/gstminiobject.c (gst_value_mini_object_collect): Use
gst_value_set_mini_object so as to add a ref on the object (which
will be removed when the value is unset).
* gst/elements/gstfakesink.c (gst_fakesink_class_init): Fix signal
arg type in ::handoff.
* gst/gstelement.c (gst_element_change_state): Also deactivate
pads in READY->NULL, just in case the element didn't make it to
PAUSED. Wingo tested, Wim approved.
Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_basesink_finish_preroll),
(gst_basesink_chain_unlocked), (gst_basesink_activate):
* gst/gstminiobject.c: (gst_mini_object_get_type),
(gst_mini_object_free):
* gst/gstpad.c: (gst_pad_accept_caps), (gst_pad_query),
(gst_pad_push), (gst_pad_push_event):
* gst/gstqueue.c: (gst_queue_change_state):
Don't queue buffers in basesink when we are flushing.
Unref buffer when flushing in basesink.
Flush queue when going to READY
Unref buffer when _push() returns an error.
Don't free MiniObject instance when refcount is incremented
in _finalize() so that we can recover objects.
