97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file memoryUsagePointers.h
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* @author drose
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* @date 2000-05-25
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*/
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#ifndef MEMORYUSAGEPOINTERS_H
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#define MEMORYUSAGEPOINTERS_H
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#include "pandabase.h"
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#include "typedObject.h"
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#include "pointerTo.h"
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#include "referenceCount.h"
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#include "pvector.h"
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/**
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* This is a list of pointers returned by a MemoryUsage object in response to
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* some query.
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*
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* Warning: once pointers are stored in a MemoryUsagePointers object, they are
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* reference-counted, and will not be freed until the MemoryUsagePointers
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* object is freed (or clear() is called on the object). However, they may
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* not even be freed then; pointers may leak once they have been added to this
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* structure. This is because we don't store enough information in this
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* structure to correctly free the pointers that have been added. Since this
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* is intended primarily as a debugging tool, this is not a major issue.
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*
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* This class is just a user interface to talk about pointers stored in a
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* MemoryUsage object. It doesn't even exist when compiled with NDEBUG.
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*/
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class EXPCL_PANDA_EXPRESS MemoryUsagePointers {
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PUBLISHED:
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MemoryUsagePointers();
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~MemoryUsagePointers();
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size_t get_num_pointers() const;
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ReferenceCount *get_pointer(size_t n) const;
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MAKE_SEQ(get_pointers, get_num_pointers, get_pointer);
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TypedObject *get_typed_pointer(size_t n) const;
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MAKE_SEQ(get_typed_pointers, get_num_pointers, get_typed_pointer);
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TypeHandle get_type(size_t n) const;
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std::string get_type_name(size_t n) const;
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double get_age(size_t n) const;
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#ifdef DO_MEMORY_USAGE
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EXTENSION(PyObject *get_python_pointer(size_t n) const);
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#endif
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void clear();
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void output(std::ostream &out) const;
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private:
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void add_entry(ReferenceCount *ref_ptr, TypedObject *typed_ptr,
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TypeHandle type, double age);
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class Entry {
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public:
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INLINE Entry(ReferenceCount *ref_ptr, TypedObject *typed_ptr,
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TypeHandle type, double age);
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INLINE Entry(const Entry ©);
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INLINE void operator = (const Entry ©);
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INLINE ~Entry();
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// We have an ordinary pointer to a type ReferenceCount, and not a
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// PT(ReferenceCount), because we can't actually delete this thing (since
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// ReferenceCount has no public destructor). If we can't delete it, we
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// can't make a PointerTo it, since PointerTo wants to be able to delete
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// things.
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ReferenceCount *_ref_ptr;
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TypedObject *_typed_ptr;
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TypeHandle _type;
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double _age;
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};
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typedef pvector<Entry> Entries;
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Entries _entries;
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friend class MemoryUsage;
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};
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INLINE std::ostream &operator << (std::ostream &out, const MemoryUsagePointers &mup) {
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mup.output(out);
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return out;
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}
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#include "memoryUsagePointers.I"
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#endif
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