gcsupport.po

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msgstr ""
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#: c-api/gcsupport.rst:6
msgid "Supporting Cyclic Garbage Collection"
msgstr ""

#: c-api/gcsupport.rst:8
msgid ""
"Python's support for detecting and collecting garbage which involves "
"circular references requires support from object types which are \"containers"
"\" for other objects which may also be containers.  Types which do not store "
"references to other objects, or which only store references to atomic types "
"(such as numbers or strings), do not need to provide any explicit support "
"for garbage collection."
msgstr ""

#: c-api/gcsupport.rst:15
msgid ""
"To create a container type, the :c:member:`~PyTypeObject.tp_flags` field of "
"the type object must include the :const:`Py_TPFLAGS_HAVE_GC` and provide an "
"implementation of the :c:member:`~PyTypeObject.tp_traverse` handler.  If "
"instances of the type are mutable, a :c:member:`~PyTypeObject.tp_clear` "
"implementation must also be provided."
msgstr ""

#: c-api/gcsupport.rst:24
msgid ""
"Objects with a type with this flag set must conform with the rules "
"documented here.  For convenience these objects will be referred to as "
"container objects."
msgstr ""

#: c-api/gcsupport.rst:28
msgid "Constructors for container types must conform to two rules:"
msgstr ""

#: c-api/gcsupport.rst:30
msgid ""
"The memory for the object must be allocated using :c:func:`PyObject_GC_New` "
"or :c:func:`PyObject_GC_NewVar`."
msgstr ""

#: c-api/gcsupport.rst:33
msgid ""
"Once all the fields which may contain references to other containers are "
"initialized, it must call :c:func:`PyObject_GC_Track`."
msgstr ""

#: c-api/gcsupport.rst:39
msgid ""
"Analogous to :c:func:`PyObject_New` but for container objects with the :"
"const:`Py_TPFLAGS_HAVE_GC` flag set."
msgstr ""

#: c-api/gcsupport.rst:45
msgid ""
"Analogous to :c:func:`PyObject_NewVar` but for container objects with the :"
"const:`Py_TPFLAGS_HAVE_GC` flag set."
msgstr ""

#: c-api/gcsupport.rst:51
msgid ""
"Resize an object allocated by :c:func:`PyObject_NewVar`.  Returns the "
"resized object or ``NULL`` on failure.  *op* must not be tracked by the "
"collector yet."
msgstr ""

#: c-api/gcsupport.rst:57
msgid ""
"Adds the object *op* to the set of container objects tracked by the "
"collector.  The collector can run at unexpected times so objects must be "
"valid while being tracked.  This should be called once all the fields "
"followed by the :c:member:`~PyTypeObject.tp_traverse` handler become valid, "
"usually near the end of the constructor."
msgstr ""

#: c-api/gcsupport.rst:66
msgid ""
"Returns non-zero if the object implements the garbage collector protocol, "
"otherwise returns 0."
msgstr ""

#: c-api/gcsupport.rst:69
msgid ""
"The object cannot be tracked by the garbage collector if this function "
"returns 0."
msgstr ""

#: c-api/gcsupport.rst:74
msgid ""
"Returns 1 if the object type of *op* implements the GC protocol and *op* is "
"being currently tracked by the garbage collector and 0 otherwise."
msgstr ""

#: c-api/gcsupport.rst:77
msgid "This is analogous to the Python function :func:`gc.is_tracked`."
msgstr ""

#: c-api/gcsupport.rst:84
msgid ""
"Returns 1 if the object type of *op* implements the GC protocol and *op* has "
"been already finalized by the garbage collector and 0 otherwise."
msgstr ""

#: c-api/gcsupport.rst:87
msgid "This is analogous to the Python function :func:`gc.is_finalized`."
msgstr ""

#: c-api/gcsupport.rst:91
msgid ""
"Similarly, the deallocator for the object must conform to a similar pair of "
"rules:"
msgstr ""

#: c-api/gcsupport.rst:94
msgid ""
"Before fields which refer to other containers are invalidated, :c:func:"
"`PyObject_GC_UnTrack` must be called."
msgstr ""

#: c-api/gcsupport.rst:97
msgid ""
"The object's memory must be deallocated using :c:func:`PyObject_GC_Del`."
msgstr ""

#: c-api/gcsupport.rst:102
msgid ""
"Releases memory allocated to an object using :c:func:`PyObject_GC_New` or :c:"
"func:`PyObject_GC_NewVar`."
msgstr ""

#: c-api/gcsupport.rst:108
msgid ""
"Remove the object *op* from the set of container objects tracked by the "
"collector.  Note that :c:func:`PyObject_GC_Track` can be called again on "
"this object to add it back to the set of tracked objects.  The deallocator (:"
"c:member:`~PyTypeObject.tp_dealloc` handler) should call this for the object "
"before any of the fields used by the :c:member:`~PyTypeObject.tp_traverse` "
"handler become invalid."
msgstr ""

#: c-api/gcsupport.rst:117
msgid ""
"The :c:func:`_PyObject_GC_TRACK` and :c:func:`_PyObject_GC_UNTRACK` macros "
"have been removed from the public C API."
msgstr ""

#: c-api/gcsupport.rst:120
msgid ""
"The :c:member:`~PyTypeObject.tp_traverse` handler accepts a function "
"parameter of this type:"
msgstr ""

#: c-api/gcsupport.rst:125
msgid ""
"Type of the visitor function passed to the :c:member:`~PyTypeObject."
"tp_traverse` handler. The function should be called with an object to "
"traverse as *object* and the third parameter to the :c:member:`~PyTypeObject."
"tp_traverse` handler as *arg*.  The Python core uses several visitor "
"functions to implement cyclic garbage detection; it's not expected that "
"users will need to write their own visitor functions."
msgstr ""

#: c-api/gcsupport.rst:132
msgid ""
"The :c:member:`~PyTypeObject.tp_traverse` handler must have the following "
"type:"
msgstr ""

#: c-api/gcsupport.rst:137
msgid ""
"Traversal function for a container object.  Implementations must call the "
"*visit* function for each object directly contained by *self*, with the "
"parameters to *visit* being the contained object and the *arg* value passed "
"to the handler.  The *visit* function must not be called with a ``NULL`` "
"object argument.  If *visit* returns a non-zero value that value should be "
"returned immediately."
msgstr ""

#: c-api/gcsupport.rst:144
msgid ""
"To simplify writing :c:member:`~PyTypeObject.tp_traverse` handlers, a :c:"
"func:`Py_VISIT` macro is provided.  In order to use this macro, the :c:"
"member:`~PyTypeObject.tp_traverse` implementation must name its arguments "
"exactly *visit* and *arg*:"
msgstr ""

#: c-api/gcsupport.rst:151
msgid ""
"If *o* is not ``NULL``, call the *visit* callback, with arguments *o* and "
"*arg*.  If *visit* returns a non-zero value, then return it. Using this "
"macro, :c:member:`~PyTypeObject.tp_traverse` handlers look like::"
msgstr ""

#: c-api/gcsupport.rst:164
msgid ""
"The :c:member:`~PyTypeObject.tp_clear` handler must be of the :c:type:"
"`inquiry` type, or ``NULL`` if the object is immutable."
msgstr ""

#: c-api/gcsupport.rst:170
msgid ""
"Drop references that may have created reference cycles.  Immutable objects "
"do not have to define this method since they can never directly create "
"reference cycles.  Note that the object must still be valid after calling "
"this method (don't just call :c:func:`Py_DECREF` on a reference).  The "
"collector will call this method if it detects that this object is involved "
"in a reference cycle."
msgstr ""