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
|
#include <stdio.h>
#include <stdlib.h>
#import "OFObject.h"
#import "OFSystemInfo.h"
#ifndef OF_COMPILER_TLS
# import "threading.h"
#endif
#import "macros.h"
#import "autorelease.h"
#ifdef OF_COMPILER_TLS
static __thread id *objects = NULL;
static __thread id *top = NULL;
static __thread size_t size = 0;
#else
static of_tlskey_t objectsKey, topKey, sizeKey;
static void __attribute__((constructor))
init(void)
{
OF_ENSURE(of_tlskey_new(&objectsKey));
OF_ENSURE(of_tlskey_new(&topKey));
OF_ENSURE(of_tlskey_new(&sizeKey));
}
#endif
void*
objc_autoreleasePoolPush()
{
#ifndef OF_COMPILER_TLS
id *top = of_tlskey_get(topKey);
id *objects = of_tlskey_get(objectsKey);
#endif
ptrdiff_t offset = top - objects;
return (void*)offset;
}
void
objc_autoreleasePoolPop(void *offset)
{
#ifndef OF_COMPILER_TLS
id *top = of_tlskey_get(topKey);
id *objects = of_tlskey_get(objectsKey);
#endif
id *pool = objects + (ptrdiff_t)offset;
id *iter;
for (iter = pool; iter < top; iter++)
[*iter release];
top = pool;
if (top == objects) {
free(objects);
objects = NULL;
top = NULL;
}
#ifndef OF_COMPILER_TLS
OF_ENSURE(of_tlskey_set(topKey, top));
OF_ENSURE(of_tlskey_set(objectsKey, objects));
#endif
}
id
_objc_rootAutorelease(id object)
{
#ifndef OF_COMPILER_TLS
id *top = of_tlskey_get(topKey);
id *objects = of_tlskey_get(objectsKey);
size_t size = (size_t)(uintptr_t)of_tlskey_get(sizeKey);
#endif
if (objects == NULL) {
size = [OFSystemInfo pageSize];
OF_ENSURE((objects = malloc(size)) != NULL);
top = objects;
#ifndef OF_COMPILER_TLS
OF_ENSURE(of_tlskey_set(objectsKey, objects));
OF_ENSURE(of_tlskey_set(sizeKey, (void*)(uintptr_t)size));
#endif
}
if ((uintptr_t)top >= (uintptr_t)objects + size) {
ptrdiff_t diff = top - objects;
size += [OFSystemInfo pageSize];
OF_ENSURE((objects = realloc(objects, size)) != NULL);
#ifndef OF_COMPILER_TLS
OF_ENSURE(of_tlskey_set(objectsKey, objects));
OF_ENSURE(of_tlskey_set(sizeKey, (void*)(uintptr_t)size));
#endif
top = objects + diff;
}
*top = object;
top++;
#ifndef OF_COMPILER_TLS
OF_ENSURE(of_tlskey_set(topKey, top));
#endif
return object;
}
|
|
|
>
>
>
|
>
>
>
|
|
|
|
|
|
|
|
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
|
#include <stdio.h>
#include <stdlib.h>
#import "OFObject.h"
#import "OFSystemInfo.h"
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
# import "threading.h"
#endif
#import "macros.h"
#import "autorelease.h"
#if defined(OF_COMPILER_TLS)
static __thread id *objects = NULL;
static __thread id *top = NULL;
static __thread size_t size = 0;
#elif defined(OF_THREADS)
static of_tlskey_t objectsKey, topKey, sizeKey;
#else
static id *objects = NULL;
static id *top = NULL;
static size_t size = 0;
#endif
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
static void __attribute__((constructor))
init(void)
{
OF_ENSURE(of_tlskey_new(&objectsKey));
OF_ENSURE(of_tlskey_new(&topKey));
OF_ENSURE(of_tlskey_new(&sizeKey));
}
#endif
void*
objc_autoreleasePoolPush()
{
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
id *top = of_tlskey_get(topKey);
id *objects = of_tlskey_get(objectsKey);
#endif
ptrdiff_t offset = top - objects;
return (void*)offset;
}
void
objc_autoreleasePoolPop(void *offset)
{
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
id *top = of_tlskey_get(topKey);
id *objects = of_tlskey_get(objectsKey);
#endif
id *pool = objects + (ptrdiff_t)offset;
id *iter;
for (iter = pool; iter < top; iter++)
[*iter release];
top = pool;
if (top == objects) {
free(objects);
objects = NULL;
top = NULL;
}
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
OF_ENSURE(of_tlskey_set(topKey, top));
OF_ENSURE(of_tlskey_set(objectsKey, objects));
#endif
}
id
_objc_rootAutorelease(id object)
{
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
id *top = of_tlskey_get(topKey);
id *objects = of_tlskey_get(objectsKey);
size_t size = (size_t)(uintptr_t)of_tlskey_get(sizeKey);
#endif
if (objects == NULL) {
size = [OFSystemInfo pageSize];
OF_ENSURE((objects = malloc(size)) != NULL);
top = objects;
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
OF_ENSURE(of_tlskey_set(objectsKey, objects));
OF_ENSURE(of_tlskey_set(sizeKey, (void*)(uintptr_t)size));
#endif
}
if ((uintptr_t)top >= (uintptr_t)objects + size) {
ptrdiff_t diff = top - objects;
size += [OFSystemInfo pageSize];
OF_ENSURE((objects = realloc(objects, size)) != NULL);
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
OF_ENSURE(of_tlskey_set(objectsKey, objects));
OF_ENSURE(of_tlskey_set(sizeKey, (void*)(uintptr_t)size));
#endif
top = objects + diff;
}
*top = object;
top++;
#if !defined(OF_COMPILER_TLS) && defined(OF_THREADS)
OF_ENSURE(of_tlskey_set(topKey, top));
#endif
return object;
}
|