44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
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84
85
86
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90
91
92
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94
95
96
97
98
99
100
101
102
103
|
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
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70
71
72
73
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79
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81
82
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85
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91
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93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
+
+
+
-
-
+
+
+
+
+
+
+
+
|
return nil;
}
- (void*)getMemWithSize: (size_t)size
{
struct __ofobject_allocated_mem *iter;
if (size == 0)
return NULL;
if ((iter = malloc(sizeof(struct __ofobject_allocated_mem))) == NULL) {
[[OFNoMemException newWithObject: self
andSize: sizeof(struct
__ofobject_allocated_mem)
] raise];
return NULL;
return NULL;
|
112
113
114
115
116
117
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119
120
121
122
123
124
125
126
127
128
129
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149
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152
|
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
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154
155
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162
163
164
165
166
167
168
169
170
|
+
+
+
+
+
+
+
+
+
-
+
|
}
- (void*)resizeMem: (void*)ptr
toNItems: (size_t)nitems
ofSize: (size_t)size
{
size_t memsize;
if (ptr == NULL)
return [self getMemForNItems: nitems
ofSize: size];
if (nitems == 0 || size == 0) {
[self freeMem: ptr];
return NULL;
}
if (size > SIZE_MAX / nitems)
[[OFOverflowException newWithObject: self] raise];
memsize = nitems * size;
return [self resizeMem: ptr
toSize: memsize];
}
- freeMem: (void*)ptr;
{
struct __ofobject_allocated_mem *iter;
for (iter = __mem_pool; iter != NULL; iter = iter->prev) {
if (iter->ptr == ptr) {
if (iter->prev != NULL)
iter->prev->next = iter->next;
if (iter->next != NULL)
iter->next->prev = iter->prev;
if (__mem_pool == iter)
__mem_pool = NULL;
__mem_pool = iter->prev;
free(iter);
free(ptr);
return self;
}
}
[[OFMemNotPartOfObjException newWithObject: self
andPointer: ptr] raise];
return self /* never reached, but makes gcc happy */;
}
@end
|