1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _MORKPOOL_
#define _MORKPOOL_ 1
#ifndef _MORK_
#include "mork.h"
#endif
#ifndef _MORKDEQUE_
#include "morkDeque.h"
#endif
#ifndef _MORKNODE_
#include "morkNode.h"
#endif
//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
class morkHandle;
class morkHandleFrame;
class morkHandleFace; // just an opaque cookie type
class morkBigBookAtom;
class morkFarBookAtom;
#define morkDerived_kPool /*i*/ 0x706C /* ascii 'pl' */
/*| morkPool: a place to manage pools of non-node objects that are memory
**| managed out of large chunks of space, so that per-object management
**| space overhead has no signficant cost.
|*/
class morkPool : public morkNode {
// public: // slots inherited from morkNode (meant to inform only)
// nsIMdbHeap* mNode_Heap;
// mork_base mNode_Base; // must equal morkBase_kNode
// mork_derived mNode_Derived; // depends on specific node subclass
// mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead
// mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone
// mork_able mNode_Mutable; // can this node be modified?
// mork_load mNode_Load; // is this node clean or dirty?
// mork_uses mNode_Uses; // refcount for strong refs
// mork_refs mNode_Refs; // refcount for strong refs + weak refs
public: // state is public because the entire Mork system is private
nsIMdbHeap* mPool_Heap; // NON-refcounted heap instance
morkDeque mPool_Blocks; // linked list of large blocks from heap
// These two lists contain instances of morkHandleFrame:
morkDeque mPool_UsedHandleFrames; // handle frames currently being used
morkDeque mPool_FreeHandleFrames; // handle frames currently in free list
mork_count mPool_UsedFramesCount; // length of mPool_UsedHandleFrames
mork_count mPool_FreeFramesCount; // length of mPool_UsedHandleFrames
// { ===== begin morkNode interface =====
public: // morkNode virtual methods
virtual void CloseMorkNode(morkEnv* ev); // ClosePool() only if open
virtual ~morkPool(); // assert that ClosePool() executed earlier
public: // morkPool construction & destruction
morkPool(const morkUsage& inUsage, nsIMdbHeap* ioHeap,
nsIMdbHeap* ioSlotHeap);
morkPool(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap,
nsIMdbHeap* ioSlotHeap);
void ClosePool(morkEnv* ev); // called by CloseMorkNode();
private: // copying is not allowed
morkPool(const morkPool& other);
morkPool& operator=(const morkPool& other);
public: // dynamic type identification
mork_bool IsPool() const
{ return IsNode() && mNode_Derived == morkDerived_kPool; }
// } ===== end morkNode methods =====
public: // typing
void NonPoolTypeError(morkEnv* ev);
public: // morkNode memory management operators
void* operator new(size_t inSize, nsIMdbHeap& ioHeap, morkEnv* ev) CPP_THROW_NEW
{ return morkNode::MakeNew(inSize, ioHeap, ev); }
void* operator new(size_t inSize) CPP_THROW_NEW
{ return ::operator new(inSize); }
public: // other pool methods
// alloc and free individual instances of handles (inside hand frames):
morkHandleFace* NewHandle(morkEnv* ev, mork_size inSize, morkZone* ioZone);
void ZapHandle(morkEnv* ev, morkHandleFace* ioHandle);
// alloc and free individual instances of rows:
morkRow* NewRow(morkEnv* ev, morkZone* ioZone); // alloc new row instance
void ZapRow(morkEnv* ev, morkRow* ioRow, morkZone* ioZone); // free old row instance
// alloc and free entire vectors of cells (not just one cell at a time)
morkCell* NewCells(morkEnv* ev, mork_size inSize, morkZone* ioZone);
void ZapCells(morkEnv* ev, morkCell* ioVector, mork_size inSize, morkZone* ioZone);
// resize (grow or trim) cell vectors inside a containing row instance
mork_bool AddRowCells(morkEnv* ev, morkRow* ioRow, mork_size inNewSize, morkZone* ioZone);
mork_bool CutRowCells(morkEnv* ev, morkRow* ioRow, mork_size inNewSize, morkZone* ioZone);
// alloc & free individual instances of atoms (lots of atom subclasses):
void ZapAtom(morkEnv* ev, morkAtom* ioAtom, morkZone* ioZone); // any subclass (by kind)
morkOidAtom* NewRowOidAtom(morkEnv* ev, const mdbOid& inOid, morkZone* ioZone);
morkOidAtom* NewTableOidAtom(morkEnv* ev, const mdbOid& inOid, morkZone* ioZone);
morkAtom* NewAnonAtom(morkEnv* ev, const morkBuf& inBuf,
mork_cscode inForm, morkZone* ioZone);
// if inForm is zero, and inBuf.mBuf_Fill is less than 256, then a 'wee'
// anon atom will be created, and otherwise a 'big' anon atom.
morkBookAtom* NewBookAtom(morkEnv* ev, const morkBuf& inBuf,
mork_cscode inForm, morkAtomSpace* ioSpace, mork_aid inAid, morkZone* ioZone);
// if inForm is zero, and inBuf.mBuf_Fill is less than 256, then a 'wee'
// book atom will be created, and otherwise a 'big' book atom.
morkBookAtom* NewBookAtomCopy(morkEnv* ev, const morkBigBookAtom& inAtom, morkZone* ioZone);
// make the smallest kind of book atom that can hold content in inAtom.
// The inAtom parameter is often expected to be a staged book atom in
// the store, which was used to search an atom space for existing atoms.
morkBookAtom* NewFarBookAtomCopy(morkEnv* ev, const morkFarBookAtom& inAtom, morkZone* ioZone);
// make the smallest kind of book atom that can hold content in inAtom.
// The inAtom parameter is often expected to be a staged book atom in
// the store, which was used to search an atom space for existing atoms.
public: // typesafe refcounting inlines calling inherited morkNode methods
static void SlotWeakPool(morkPool* me,
morkEnv* ev, morkPool** ioSlot)
{ morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); }
static void SlotStrongPool(morkPool* me,
morkEnv* ev, morkPool** ioSlot)
{ morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); }
};
//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#endif /* _MORKPOOL_ */
|
