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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
// NewHandler.cpp
#include "StdAfx.h"
#include <stdlib.h>
#include "NewHandler.h"
// #define DEBUG_MEMORY_LEAK
#ifndef DEBUG_MEMORY_LEAK
#ifdef Z7_REDEFINE_OPERATOR_NEW
/*
void * my_new(size_t size)
{
// void *p = ::HeapAlloc(::GetProcessHeap(), 0, size);
if (size == 0)
size = 1;
void *p = ::malloc(size);
if (!p)
throw CNewException();
return p;
}
void my_delete(void *p) throw()
{
// if (!p) return; ::HeapFree(::GetProcessHeap(), 0, p);
::free(p);
}
void * my_Realloc(void *p, size_t newSize, size_t oldSize)
{
void *newBuf = my_new(newSize);
if (oldSize != 0)
memcpy(newBuf, p, oldSize);
my_delete(p);
return newBuf;
}
*/
void *
#ifdef _MSC_VER
__cdecl
#endif
operator new(size_t size)
{
/* by C++ specification:
if (size == 0), operator new(size) returns non_NULL pointer.
If (operator new(0) returns NULL), it's out of specification.
but some calling code can work correctly even in this case too. */
// if (size == 0) return NULL; // for debug only. don't use it
/* malloc(0) returns non_NULL in main compilers, as we need here.
But specification also allows malloc(0) to return NULL.
So we change (size=0) to (size=1) here to get real non_NULL pointer */
if (size == 0)
size = 1;
// void *p = ::HeapAlloc(::GetProcessHeap(), 0, size);
// void *p = ::MyAlloc(size); // note: MyAlloc(0) returns NULL
void *p = ::malloc(size);
if (!p)
throw CNewException();
return p;
}
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete(void *p) throw()
{
// if (!p) return; ::HeapFree(::GetProcessHeap(), 0, p);
// MyFree(p);
::free(p);
}
/*
void *
#ifdef _MSC_VER
__cdecl
#endif
operator new[](size_t size)
{
// void *p = ::HeapAlloc(::GetProcessHeap(), 0, size);
if (size == 0)
size = 1;
void *p = ::malloc(size);
if (!p)
throw CNewException();
return p;
}
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete[](void *p) throw()
{
// if (!p) return; ::HeapFree(::GetProcessHeap(), 0, p);
::free(p);
}
*/
#endif
#else
#include <stdio.h>
// #pragma init_seg(lib)
/*
const int kDebugSize = 1000000;
static void *a[kDebugSize];
static int g_index = 0;
class CC
{
public:
CC()
{
for (int i = 0; i < kDebugSize; i++)
a[i] = 0;
}
~CC()
{
printf("\nDestructor: %d\n", numAllocs);
for (int i = 0; i < kDebugSize; i++)
if (a[i] != 0)
return;
}
} g_CC;
*/
#ifdef _WIN32
static bool wasInit = false;
static CRITICAL_SECTION cs;
#endif
static int numAllocs = 0;
void *
#ifdef _MSC_VER
__cdecl
#endif
operator new(size_t size)
{
#ifdef _WIN32
if (!wasInit)
{
InitializeCriticalSection(&cs);
wasInit = true;
}
EnterCriticalSection(&cs);
numAllocs++;
int loc = numAllocs;
void *p = HeapAlloc(GetProcessHeap(), 0, size);
/*
if (g_index < kDebugSize)
{
a[g_index] = p;
g_index++;
}
*/
printf("Alloc %6d, size = %8u\n", loc, (unsigned)size);
LeaveCriticalSection(&cs);
if (!p)
throw CNewException();
return p;
#else
numAllocs++;
int loc = numAllocs;
if (size == 0)
size = 1;
void *p = malloc(size);
/*
if (g_index < kDebugSize)
{
a[g_index] = p;
g_index++;
}
*/
printf("Alloc %6d, size = %8u\n", loc, (unsigned)size);
if (!p)
throw CNewException();
return p;
#endif
}
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete(void *p) throw()
{
if (!p)
return;
#ifdef _WIN32
EnterCriticalSection(&cs);
/*
for (int i = 0; i < g_index; i++)
if (a[i] == p)
a[i] = 0;
*/
HeapFree(GetProcessHeap(), 0, p);
if (numAllocs == 0)
numAllocs = numAllocs; // ERROR
numAllocs--;
if (numAllocs == 0)
numAllocs = numAllocs; // OK: all objects were deleted
printf("Free %d\n", numAllocs);
LeaveCriticalSection(&cs);
#else
free(p);
numAllocs--;
printf("Free %d\n", numAllocs);
#endif
}
/*
void *
#ifdef _MSC_VER
__cdecl
#endif
operator new[](size_t size)
{
printf("operator_new[] : ");
return operator new(size);
}
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete(void *p, size_t sz) throw();
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete(void *p, size_t sz) throw()
{
if (!p)
return;
printf("operator_delete_size : size=%d : ", (unsigned)sz);
operator delete(p);
}
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete[](void *p) throw()
{
if (!p)
return;
printf("operator_delete[] : ");
operator delete(p);
}
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete[](void *p, size_t sz) throw();
void
#ifdef _MSC_VER
__cdecl
#endif
operator delete[](void *p, size_t sz) throw()
{
if (!p)
return;
printf("operator_delete_size[] : size=%d : ", (unsigned)sz);
operator delete(p);
}
*/
#endif
/*
int MemErrorVC(size_t)
{
throw CNewException();
// return 1;
}
CNewHandlerSetter::CNewHandlerSetter()
{
// MemErrorOldVCFunction = _set_new_handler(MemErrorVC);
}
CNewHandlerSetter::~CNewHandlerSetter()
{
// _set_new_handler(MemErrorOldVCFunction);
}
*/
|
