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143 lines
5 KiB
C++
143 lines
5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _MORKOBJECT_
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#define _MORKOBJECT_ 1
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#ifndef _MORK_
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#include "mork.h"
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#endif
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#ifndef _MORKNODE_
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#include "morkNode.h"
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#endif
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#ifndef _MORKBEAD_
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#include "morkBead.h"
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#endif
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#ifndef _MORKCONFIG_
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#include "morkConfig.h"
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#endif
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#ifndef _ORKINHEAP_
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#include "orkinHeap.h"
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#endif
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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#define morkDerived_kObject /*i*/ 0x6F42 /* ascii 'oB' */
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/*| morkObject: subclass of morkNode that adds knowledge of db suite factory
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**| and containing port to those objects that are exposed as instances of
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**| nsIMdbObject in the public interface.
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|*/
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class morkObject : public morkBead, public nsIMdbObject {
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// public: // slots inherited from morkNode (meant to inform only)
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// nsIMdbHeap* mNode_Heap;
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// mork_base mNode_Base; // must equal morkBase_kNode
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// mork_derived mNode_Derived; // depends on specific node subclass
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// mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead
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// mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone
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// mork_able mNode_Mutable; // can this node be modified?
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// mork_load mNode_Load; // is this node clean or dirty?
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// mork_uses mNode_Uses; // refcount for strong refs
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// mork_refs mNode_Refs; // refcount for strong refs + weak refs
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// mork_color mBead_Color; // ID for this bead
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public: // state is public because the entire Mork system is private
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morkHandle* mObject_Handle; // weak ref to handle for this object
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morkEnv * mMorkEnv; // weak ref to environment this object created in.
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// { ===== begin morkNode interface =====
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public: // morkNode virtual methods
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virtual void CloseMorkNode(morkEnv* ev) override; // CloseObject() only if open
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#ifdef MORK_DEBUG_HEAP_STATS
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void operator delete(void* ioAddress, size_t size)
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{
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mork_u4* array = (mork_u4*) ioAddress;
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array -= 3;
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orkinHeap *heap = (orkinHeap *) *array;
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if (heap)
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heap->Free(nullptr, ioAddress);
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}
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#endif
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NS_DECL_ISUPPORTS
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// { ----- begin attribute methods -----
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NS_IMETHOD IsFrozenMdbObject(nsIMdbEnv* ev, mdb_bool* outIsReadonly) override;
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// same as nsIMdbPort::GetIsPortReadonly() when this object is inside a port.
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// } ----- end attribute methods -----
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// { ----- begin factory methods -----
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NS_IMETHOD GetMdbFactory(nsIMdbEnv* ev, nsIMdbFactory** acqFactory) override;
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// } ----- end factory methods -----
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// { ----- begin ref counting for well-behaved cyclic graphs -----
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NS_IMETHOD GetWeakRefCount(nsIMdbEnv* ev, // weak refs
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mdb_count* outCount) override;
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NS_IMETHOD GetStrongRefCount(nsIMdbEnv* ev, // strong refs
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mdb_count* outCount) override;
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NS_IMETHOD AddWeakRef(nsIMdbEnv* ev) override;
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#ifndef _MSC_VER
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// The first declaration of AddStrongRef is to suppress -Werror,-Woverloaded-virtual.
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NS_IMETHOD_(mork_uses) AddStrongRef(morkEnv* ev) override;
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#endif
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NS_IMETHOD_(mork_uses) AddStrongRef(nsIMdbEnv* ev) override;
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NS_IMETHOD CutWeakRef(nsIMdbEnv* ev) override;
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#ifndef _MSC_VER
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// The first declaration of CutStrongRef is to suppress -Werror,-Woverloaded-virtual.
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NS_IMETHOD_(mork_uses) CutStrongRef(morkEnv* ev) override;
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#endif
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NS_IMETHOD CutStrongRef(nsIMdbEnv* ev) override;
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NS_IMETHOD CloseMdbObject(nsIMdbEnv* ev) override; // called at strong refs zero
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NS_IMETHOD IsOpenMdbObject(nsIMdbEnv* ev, mdb_bool* outOpen) override;
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// } ----- end ref counting -----
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protected: // special case construction of first env without preceding env
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morkObject(const morkUsage& inUsage, nsIMdbHeap* ioHeap,
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mork_color inBeadColor);
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virtual ~morkObject(); // assert that CloseObject() executed earlier
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public: // morkEnv construction & destruction
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morkObject(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap,
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mork_color inBeadColor, morkHandle* ioHandle); // ioHandle can be nil
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void CloseObject(morkEnv* ev); // called by CloseMorkNode();
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private: // copying is not allowed
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morkObject(const morkObject& other);
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morkObject& operator=(const morkObject& other);
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public: // dynamic type identification
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mork_bool IsObject() const
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{ return IsNode() && mNode_Derived == morkDerived_kObject; }
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// } ===== end morkNode methods =====
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// void NewNilHandleError(morkEnv* ev); // mObject_Handle is nil
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public: // typesafe refcounting inlines calling inherited morkNode methods
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static void SlotWeakObject(morkObject* me,
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morkEnv* ev, morkObject** ioSlot)
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{ morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); }
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static void SlotStrongObject(morkObject* me,
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morkEnv* ev, morkObject** ioSlot)
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{ morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); }
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};
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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#endif /* _MORKOBJECT_ */
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