1 | 'TODO: ローカルオブジェクト確保及び解放時にTryServiceに通知する必要がある。
|
---|
2 |
|
---|
3 | Class TryLayer
|
---|
4 | Public
|
---|
5 | Const addressOfCatch As VoidPtr
|
---|
6 | Const basePtr As LONG_PTR
|
---|
7 | Const stackPtr As LONG_PTR
|
---|
8 | Const debugProcNum As DWord
|
---|
9 |
|
---|
10 | Sub TryLayer( addressOfCatch As VoidPtr, basePtr As LONG_PTR, stackPtr As LONG_PTR )
|
---|
11 | This.addressOfCatch = addressOfCatch
|
---|
12 | This.basePtr = basePtr
|
---|
13 | This.stackPtr = stackPtr
|
---|
14 |
|
---|
15 | #ifdef _DEBUG
|
---|
16 | Dim ThreadNum As Long
|
---|
17 | ThreadNum=_DebugSys_GetThread()
|
---|
18 | If ThreadNum <> -1 Then
|
---|
19 | debugProcNum = _DebugSys_ProcNum[ThreadNum]
|
---|
20 | End If
|
---|
21 | #endif
|
---|
22 | End Sub
|
---|
23 | Sub ~TryLayer()
|
---|
24 | End Sub
|
---|
25 | End Class
|
---|
26 |
|
---|
27 | Class ExceptionService
|
---|
28 | ppTryLayers As **TryLayer
|
---|
29 | nTryLayers As Long
|
---|
30 |
|
---|
31 | Sub FreeLocalObjects()
|
---|
32 | 'TODO: 破棄されていないローカルオブジェクトを破棄
|
---|
33 | End Sub
|
---|
34 | Public
|
---|
35 |
|
---|
36 | Sub ExceptionService()
|
---|
37 | ppTryLayers = _System_malloc( 1 )
|
---|
38 | nTryLayers = 0
|
---|
39 | End Sub
|
---|
40 | Sub ~ExceptionService()
|
---|
41 | Dim i As Long
|
---|
42 | For i = 0 To ELM( nTryLayers )
|
---|
43 | Delete ppTryLayers[i]
|
---|
44 | Next
|
---|
45 | _System_free( ppTryLayers )
|
---|
46 | ppTryLayers = 0
|
---|
47 | End Sub
|
---|
48 |
|
---|
49 | 'Try
|
---|
50 | Function _BeginTryScope( addressOfCatch As VoidPtr, basePtr As LONG_PTR, stackPtr As LONG_PTR ) As TryLayer
|
---|
51 | ppTryLayers = _System_realloc( ppTryLayers, ( nTryLayers + 1 ) * SizeOf( *TryLayer ) )
|
---|
52 | ppTryLayers[nTryLayers] = New TryLayer( addressOfCatch, basePtr, stackPtr )
|
---|
53 | nTryLayers++
|
---|
54 |
|
---|
55 | Return ByVal ppTryLayers[nTryLayers-1]
|
---|
56 | End Function
|
---|
57 |
|
---|
58 | Static Function BeginTryScope( addressOfCatch As VoidPtr, basePtr As LONG_PTR, stackPtr As LONG_PTR ) As TryLayer
|
---|
59 | Return _System_pobj_AllThreads->GetCurrentException()->_BeginTryScope( addressOfCatch, basePtr, stackPtr )
|
---|
60 | End Function
|
---|
61 |
|
---|
62 | 'End Try
|
---|
63 | Sub EndTryScope()
|
---|
64 | nTryLayers--
|
---|
65 | Delete ppTryLayers[nTryLayers]
|
---|
66 | End Sub
|
---|
67 |
|
---|
68 | 'Throw
|
---|
69 | Sub _Throw()
|
---|
70 | If nTryLayers <= 0 then
|
---|
71 | '例外処理スコープ制御が無効なとき
|
---|
72 |
|
---|
73 | 'TODO: 適切なエラー処理
|
---|
74 | MessageBox( NULL, "例外", "", MB_OK or MB_ICONEXCLAMATION )
|
---|
75 |
|
---|
76 | Return
|
---|
77 | End If
|
---|
78 |
|
---|
79 | '未解放なローカルオブジェクトを解放する
|
---|
80 | FreeLocalObjects()
|
---|
81 |
|
---|
82 |
|
---|
83 |
|
---|
84 | '--------------------------------------------------
|
---|
85 | ' スレッドのコンテキストを設定(Catchへ遷移する)
|
---|
86 | '--------------------------------------------------
|
---|
87 |
|
---|
88 | Dim context As CONTEXT
|
---|
89 | context.ContextFlags = CONTEXT_CONTROL or CONTEXT_INTEGER
|
---|
90 | If GetThreadContext( GetCurrentThread(), context ) = 0 Then
|
---|
91 | ' TODO: エラー処理
|
---|
92 | debug
|
---|
93 | End If
|
---|
94 |
|
---|
95 | '新しいip, sp, bpをセット
|
---|
96 | #ifdef _WIN64
|
---|
97 | context.Rip = ppTryLayers[nTryLayers - 1]->addressOfCatch As QWord
|
---|
98 | context.Rbp = ppTryLayers[nTryLayers - 1]->basePtr
|
---|
99 | context.Rsp = ppTryLayers[nTryLayers - 1]->stackPtr
|
---|
100 | #else
|
---|
101 | context.Eip = ppTryLayers[nTryLayers - 1]->addressOfCatch As DWord
|
---|
102 | context.Ebp = ppTryLayers[nTryLayers - 1]->basePtr
|
---|
103 | context.Esp = ppTryLayers[nTryLayers - 1]->stackPtr
|
---|
104 | #endif
|
---|
105 |
|
---|
106 | #ifdef _DEBUG
|
---|
107 | Dim ThreadNum As Long
|
---|
108 | ThreadNum=_DebugSys_GetThread()
|
---|
109 | If ThreadNum <> -1 Then
|
---|
110 | _DebugSys_ProcNum[ThreadNum] = ppTryLayers[nTryLayers - 1]->debugProcNum-1
|
---|
111 | End If
|
---|
112 | #endif
|
---|
113 |
|
---|
114 | If SetThreadContext( GetCurrentThread(), context ) = 0 Then
|
---|
115 | OutputDebugString(Ex"レジスタ情報の設定に失敗しました。\r\n")
|
---|
116 | Return
|
---|
117 | End If
|
---|
118 | End Sub
|
---|
119 |
|
---|
120 | Sub _Throw( msg As String )
|
---|
121 | _Throw()
|
---|
122 | End Sub
|
---|
123 | End Class
|
---|
124 |
|
---|