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#ifdef HAVE_OBJC_RUNTIME_H
#import <objc/runtime.h>
#endif
#import "OFObject.h"
#import "OFExceptions.h"
#ifdef HAVE_OBJC_RUNTIME_H
#define MEM_POOL (*(struct __ofobject_allocated_mem**)((char*)self + \
class_getInstanceSize([self class])))
#else
#define MEM_POOL (*(struct __ofobject_allocated_mem**)((char*)self + \
([self class])->instance_size))
#endif
+ alloc
{
Class class = [self class];
id inst = nil;
#ifdef HAVE_OBJC_RUNTIME_H
if ((inst = (id)malloc(class_getInstanceSize(class) +
sizeof(struct __ofobject_allocated_mem*))) != nil) {
memset(inst, 0, class_getInstanceSize(class) +
sizeof(struct __ofobject_allocated_mem*));
inst->isa = class;
}
#else
if ((inst = (id)malloc(class->instance_size) +
sizeof(struct __ofobject_allocated_mem*)) != nil) {
memset(inst, 0, class->instance_size +
sizeof(struct __ofobject_allocated_mem*));
inst->class_pointer = class;
}
#endif
return inst;
}
MEM_POOL = NULL;
__mem_pool = NULL;
return self;
}
- free
{
struct __ofobject_allocated_mem *iter, *iter2;
for (iter = MEM_POOL; iter != NULL; iter = iter2) {
for (iter = __mem_pool; iter != NULL; iter = iter2) {
iter2 = iter->prev;
free(iter->ptr);
free(iter);
}
free(self);
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free(iter);
[[OFNoMemException newWithObject: self
andSize: size] raise];
return NULL;
}
iter->next = NULL;
iter->prev = MEM_POOL;
iter->prev = __mem_pool;
if (MEM_POOL != NULL)
MEM_POOL->next = iter;
if (__mem_pool != NULL)
__mem_pool->next = iter;
MEM_POOL = iter;
__mem_pool = iter;
return iter->ptr;
}
- (void*)resizeMem: (void*)ptr
toSize: (size_t)size
{
struct __ofobject_allocated_mem *iter;
for (iter = MEM_POOL; iter != NULL; iter = iter->prev) {
for (iter = __mem_pool; iter != NULL; iter = iter->prev) {
if (iter->ptr == ptr) {
if ((ptr = realloc(iter->ptr, size)) == NULL) {
[[OFNoMemException newWithObject: self
andSize: size] raise];
return NULL;
}
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return NULL;
}
- (void)freeMem: (void*)ptr;
{
struct __ofobject_allocated_mem *iter;
for (iter = MEM_POOL; iter != NULL; iter = iter->prev) {
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;
if (__mem_pool == iter)
__mem_pool = NULL;
free(iter);
free(ptr);
return;
}
}
[[OFMemNotPartOfObjException newWithObject: self
andPointer: ptr] raise];
}
@end
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