newfunc tp_new; freefunc tp_free; /* Low-level free-memory routine */ inquiry tp_is_gc; /* For PyObject_IS_GC */ PyObject *tp_bases; PyObject *tp_mro; /* method resolution order */ PyObject *tp_cache; PyObject *tp_subclasses; PyObject *tp_weaklist; destructor tp_del; ......
Python是一门有垃圾回收机制(GC)的语言,和Java的GC原理不同,其采用简单的引用计数作为内存跟踪方法。 目前主流的垃圾回收机制的内存跟踪方法有两种,一是引用计数,二是可达性分析。引用计数的思想是当创建一个对象的实例并在堆上申请内存时,对象的引用计数就为1,在其他对象中需要持有这个对象时,就需要把该对象的引用...
allocfunc tp_alloc; newfunc tp_new; freefunc tp_free;/* Low-level free-memory routine */inquiry tp_is_gc;/* For PyObject_IS_GC */PyObject *tp_bases; PyObject *tp_mro;/* method resolution order */PyObject *tp_cache; PyObject *tp_subclasses; PyObject *tp_weaklist; destructor tp_...
allocfunc tp_alloc; newfunc tp_new; freefunc tp_free; /* Low-level free-memory routine */ inquiry tp_is_gc; /* For PyObject_IS_GC */ PyObject *tp_bases; PyObject *tp_mro; /* method resolution order */ PyObject *tp_cache; PyObject *tp_subclasses; PyObject *tp_weaklist; destr...
计算机来说, 一个'对象'实际上就是一片被分配的内存空间,18这些内存可以是连续的, 也可以是离散的. 这片内存在更高的层面上被作为一个'整体'来考虑和处理, 这个整体就是一个'对象'(对计算机来说)19而在这片内存中存储着一系列的数据以及可以对这些数据进行操作(修改,读取,运行等)的代码(字节码).2021如...
return0;/* this is the normal path out */ } /* tp_finalize resurrected it! Make it look like the original Py_DECREF * never happened. */ _Py_ResurrectReference(self); _PyObject_ASSERT(self, (!_PyType_IS_GC(Py_TYPE(self))
2 changes: 1 addition & 1 deletion 2 Modules/gcmodule.c Original file line numberDiff line numberDiff line change @@ -709,7 +709,7 @@ handle_weakrefs(PyGC_Head *unreachable, PyGC_Head *old) assert(callback != NULL); /* copy-paste of weakrefobject.c's handle_callback() */ te...
descr_get;descrsetfunc tp_descr_set;Py_ssize_t tp_dictoffset;initproc tp_init;allocfunc tp_alloc;newfunc tp_new;freefunc tp_free;/* Low-level free-memory routine */inquiry tp_is_gc;/* For PyObject_IS_GC */PyObject*tp_bases;PyObject*tp_mro;/* method resolution order */PyObject*...
allocfunctp_alloc;newfunctp_new;freefunctp_free; /* Low-level free-memory routine */inquirytp_is_gc; /* For PyObject_IS_GC */PyObject*tp_bases;PyObject*tp_mro; /* method resolution order */PyObject*tp_cache;PyObject*tp_subclasses;PyObject*tp_weaklist;destructortp_del;unsignedint tp...
alloc */tuple_new,/* tp_new */PyObject_GC_Del,/* tp_free */.tp_vectorcall=tuple_vectorcall,}; 实例化 type 接下来我们看当我们在python里创建一个 tuple 的时候发生了什么?构造函数会被调用,比如tuple_new。也就是 pytype 里面的tp_new指针指向的函数。