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Class
objc_allocateClassPair(Class superclass, const char *name, size_t extraBytes)
{
struct objc_class *class, *metaclass;
Class iter, rootclass = Nil;
if (extraBytes > LONG_MAX)
OBJC_ERROR("extraBytes out of range!");
superclass->instanceSize : 0) + (long)extraBytes;
for (iter = superclass; iter != Nil; iter = iter->superclass)
rootclass = iter;
metaclass->isa = (rootclass != Nil ? rootclass->isa : class);
metaclass->superclass = (superclass != Nil ? superclass->isa : Nil);
metaclass->name = name;
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Class
objc_allocateClassPair(Class superclass, const char *name, size_t extraBytes)
{
struct objc_class *class, *metaclass;
Class iter, rootclass = Nil;
if ((class = calloc(1, sizeof(*class))) == NULL ||
(metaclass = calloc(1, sizeof(*class))) == NULL)
OBJC_ERROR("Not enough memory to allocate class pair for class "
"%s!", name);
class->isa = metaclass;
class->superclass = superclass;
class->name = name;
class->info = OBJC_CLASS_INFO_CLASS;
class->instanceSize = (superclass != Nil ?
superclass->instanceSize : 0);
if (extraBytes > LONG_MAX ||
LONG_MAX - class->instanceSize < (long)extraBytes)
OBJC_ERROR("extraBytes too large!");
class->instanceSize += (long)extraBytes;
for (iter = superclass; iter != Nil; iter = iter->superclass)
rootclass = iter;
metaclass->isa = (rootclass != Nil ? rootclass->isa : class);
metaclass->superclass = (superclass != Nil ? superclass->isa : Nil);
metaclass->name = name;
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objc_globalMutex_lock();
if ((ret = malloc((classesCount + 1) * sizeof(Class))) == NULL)
OBJC_ERROR("Failed to allocate memory for class list!");
count = objc_getClassList(ret, classesCount);
OFEnsure(count == classesCount);
ret[count] = Nil;
if (length != NULL)
*length = count;
objc_globalMutex_unlock();
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objc_globalMutex_lock();
if ((ret = malloc((classesCount + 1) * sizeof(Class))) == NULL)
OBJC_ERROR("Failed to allocate memory for class list!");
count = objc_getClassList(ret, classesCount);
if (count != classesCount)
OBJC_ERROR("Fatal internal inconsistency!");
ret[count] = Nil;
if (length != NULL)
*length = count;
objc_globalMutex_unlock();
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* UINT32_MAX so that it will get increased at the end
* of the loop and thus become 0.
*/
i = UINT32_MAX;
}
}
OFEnsure(classesCount == 0);
if (emptyDTable != NULL) {
objc_dtable_free(emptyDTable);
emptyDTable = NULL;
}
objc_sparsearray_free(fastPath);
fastPath = NULL;
objc_hashtable_free(classes);
classes = NULL;
}
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* UINT32_MAX so that it will get increased at the end
* of the loop and thus become 0.
*/
i = UINT32_MAX;
}
}
if (classesCount != 0)
OBJC_ERROR("Fatal internal inconsistency!");
if (emptyDTable != NULL) {
objc_dtable_free(emptyDTable);
emptyDTable = NULL;
}
objc_sparsearray_free(fastPath);
fastPath = NULL;
objc_hashtable_free(classes);
classes = NULL;
}
|