Differences From Artifact [a8a136e91e]:
- File src/runtime/arc.m — part of check-in [27834a3103] at 2017-06-05 19:12:48 on branch trunk — runtime: Fix missing static (user: js, size: 5517) [annotate] [blame] [check-ins using] [more...]
To Artifact [d1270d3d56]:
- File
src/runtime/arc.m
— part of check-in
[79011c5f56]
at
2017-06-07 21:38:21
on branch trunk
— runtime: Move all globals into a single struct
This is required to create a .library on MorphOS. (user: js, size: 5581) [annotate] [blame] [check-ins using]
| ︙ | ︙ | |||
27 28 29 30 31 32 33 |
#import "OFBlock.h"
struct weak_ref {
id **locations;
size_t count;
};
| | | | < | | | 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 |
#import "OFBlock.h"
struct weak_ref {
id **locations;
size_t count;
};
#import "globals.h"
#define weak_refs objc_globals.weak_refs
#define weak_refs_lock objc_globals.weak_refs_lock
static uint32_t
obj_hash(const void *obj)
{
return (uint32_t)(uintptr_t)obj;
}
static bool
obj_equal(const void *obj1, const void *obj2)
{
return (obj1 == obj2);
}
OF_CONSTRUCTOR()
{
weak_refs = objc_hashtable_new(obj_hash, obj_equal, 2);
#ifdef OF_HAVE_THREADS
if (!of_spinlock_new(&weak_refs_lock))
OBJC_ERROR("Failed to create spinlock!")
#endif
}
id
objc_retain(id object)
{
|
| ︙ | ︙ | |||
120 121 122 123 124 125 126 |
id
objc_storeWeak(id *object, id value)
{
struct weak_ref *old;
#ifdef OF_HAVE_THREADS
| | | | | 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 |
id
objc_storeWeak(id *object, id value)
{
struct weak_ref *old;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_lock(&weak_refs_lock))
OBJC_ERROR("Failed to lock spinlock!")
#endif
if (*object != nil &&
(old = objc_hashtable_get(weak_refs, *object)) != NULL) {
for (size_t i = 0; i < old->count; i++) {
if (old->locations[i] == object) {
if (--old->count == 0) {
objc_hashtable_delete(weak_refs,
*object);
free(old->locations);
free(old);
} else {
id **locations;
old->locations[i] =
|
| ︙ | ︙ | |||
155 156 157 158 159 160 161 |
break;
}
}
}
if (value != nil && class_respondsToSelector(object_getClass(value),
@selector(allowsWeakReference)) && [value allowsWeakReference]) {
| | | | | | | | 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 |
break;
}
}
}
if (value != nil && class_respondsToSelector(object_getClass(value),
@selector(allowsWeakReference)) && [value allowsWeakReference]) {
struct weak_ref *ref = objc_hashtable_get(weak_refs, value);
if (ref == NULL) {
if ((ref = calloc(1, sizeof(*ref))) == NULL)
OBJC_ERROR("Not enough memory to allocate weak "
"reference!");
objc_hashtable_set(weak_refs, value, ref);
}
if ((ref->locations = realloc(ref->locations,
(ref->count + 1) * sizeof(id *))) == NULL)
OBJC_ERROR("Not enough memory to allocate weak "
"reference!")
ref->locations[ref->count++] = object;
} else
value = nil;
*object = value;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_unlock(&weak_refs_lock))
OBJC_ERROR("Failed to unlock spinlock!")
#endif
return value;
}
id
objc_loadWeakRetained(id *object)
{
id value = nil;
struct weak_ref *ref;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_lock(&weak_refs_lock))
OBJC_ERROR("Failed to lock spinlock!")
#endif
if ((ref = objc_hashtable_get(weak_refs, *object)) != NULL)
value = *object;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_unlock(&weak_refs_lock))
OBJC_ERROR("Failed to unlock spinlock!")
#endif
if (class_respondsToSelector(object_getClass(value),
@selector(retainWeakReference)) && [value retainWeakReference])
return value;
|
| ︙ | ︙ | |||
241 242 243 244 245 246 247 |
void
objc_moveWeak(id *dest, id *src)
{
struct weak_ref *ref;
#ifdef OF_HAVE_THREADS
| | | | | | | | | 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 |
void
objc_moveWeak(id *dest, id *src)
{
struct weak_ref *ref;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_lock(&weak_refs_lock))
OBJC_ERROR("Failed to lock spinlock!")
#endif
if ((ref = objc_hashtable_get(weak_refs, *src)) != NULL) {
for (size_t i = 0; i < ref->count; i++) {
if (ref->locations[i] == src) {
ref->locations[i] = dest;
break;
}
}
}
*dest = *src;
*src = nil;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_unlock(&weak_refs_lock))
OBJC_ERROR("Failed to unlock spinlock!")
#endif
}
void
objc_zero_weak_references(id value)
{
struct weak_ref *ref;
#ifdef OF_HAVE_THREADS
if (!of_spinlock_lock(&weak_refs_lock))
OBJC_ERROR("Failed to lock spinlock!")
#endif
if ((ref = objc_hashtable_get(weak_refs, value)) != NULL) {
for (size_t i = 0; i < ref->count; i++)
*ref->locations[i] = nil;
objc_hashtable_delete(weak_refs, value);
free(ref->locations);
free(ref);
}
#ifdef OF_HAVE_THREADS
if (!of_spinlock_unlock(&weak_refs_lock))
OBJC_ERROR("Failed to unlock spinlock!")
#endif
}
|