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Vector<>::_ptr is now typed and points to the beginning of array rather than reference count block

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This commit is contained in:
koalefant 2015-12-04 05:43:48 +01:00
parent 3aa0d0e9fd
commit c7b730c655
1 changed files with 20 additions and 18 deletions
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38
core/vector.h
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@ -42,7 +42,7 @@
template<class T>
class Vector {
mutable void* _ptr;
mutable T* _ptr;
// internal helpers
@ -51,21 +51,21 @@ class Vector {
if (!_ptr)
return NULL;
return reinterpret_cast<SafeRefCount*>(_ptr);
return reinterpret_cast<SafeRefCount*>((uint8_t*)_ptr-sizeof(int)-sizeof(SafeRefCount));
}
_FORCE_INLINE_ int* _get_size() const {
if (!_ptr)
return NULL;
return reinterpret_cast<int*>(((uint8_t*)(_ptr))+sizeof(SafeRefCount));
return reinterpret_cast<int*>((uint8_t*)_ptr-sizeof(int));
}
_FORCE_INLINE_ T* _get_data() const {
if (!_ptr)
return NULL;
return reinterpret_cast<T*>(((uint8_t*)(_ptr))+sizeof(SafeRefCount)+sizeof(int));
return reinterpret_cast<T*>(_ptr);
}
@ -88,11 +88,11 @@ public:
_FORCE_INLINE_ void clear() { resize(0); }
_FORCE_INLINE_ int size() const {
if (!_ptr)
return 0;
int* size = _get_size();
if (size)
return *size;
else
return *reinterpret_cast<int*>(((uint8_t*)(_ptr))+sizeof(SafeRefCount));
return 0;
}
_FORCE_INLINE_ bool empty() const { return _ptr == 0; }
Error resize(int p_size);
@ -174,7 +174,7 @@ void Vector<T>::_unref(void *p_data) {
if (!p_data)
return;
SafeRefCount *src = reinterpret_cast<SafeRefCount*>(p_data);
SafeRefCount *src = reinterpret_cast<SafeRefCount*>((uint8_t*)p_data-sizeof(int)-sizeof(SafeRefCount));
if (!src->unref())
return; // still in use
@ -189,7 +189,7 @@ void Vector<T>::_unref(void *p_data) {
}
// free mem
memfree(p_data);
memfree((uint8_t*)p_data-sizeof(int)-sizeof(SafeRefCount));
}
@ -201,7 +201,8 @@ void Vector<T>::_copy_on_write() {
if (_get_refcount()->get() > 1 ) {
/* in use by more than me */
SafeRefCount *src_new=(SafeRefCount *)memalloc(_get_alloc_size(*_get_size()));
void* mem_new = memalloc(_get_alloc_size(*_get_size()));
SafeRefCount *src_new=(SafeRefCount *)mem_new;
src_new->init();
int * _size = (int*)(src_new+1);
*_size=*_get_size();
@ -215,7 +216,7 @@ void Vector<T>::_copy_on_write() {
}
_unref(_ptr);
_ptr=src_new;
_ptr=_data;
}
}
@ -260,16 +261,17 @@ Error Vector<T>::resize(int p_size) {
if (size()==0) {
// alloc from scratch
_ptr = (T*)memalloc(_get_alloc_size(p_size));
ERR_FAIL_COND_V( !_ptr ,ERR_OUT_OF_MEMORY);
void* ptr=memalloc(_get_alloc_size(p_size));
ERR_FAIL_COND_V( !ptr ,ERR_OUT_OF_MEMORY);
_ptr=(T*)((uint8_t*)ptr+sizeof(int)+sizeof(SafeRefCount));
_get_refcount()->init(); // init refcount
*_get_size()=0; // init size (currently, none)
} else {
void *_ptrnew = (T*)memrealloc(_ptr,_get_alloc_size(p_size));
void *_ptrnew = (T*)memrealloc((uint8_t*)_ptr-sizeof(int)-sizeof(SafeRefCount),_get_alloc_size(p_size));
ERR_FAIL_COND_V( !_ptrnew ,ERR_OUT_OF_MEMORY);
_ptr=_ptrnew;
_ptr=(T*)((uint8_t*)_ptrnew+sizeof(int)+sizeof(SafeRefCount));
}
// construct the newly created elements
@ -291,10 +293,10 @@ Error Vector<T>::resize(int p_size) {
t->~T();
}
void *_ptrnew = (T*)memrealloc(_ptr,_get_alloc_size(p_size));
void *_ptrnew = (T*)memrealloc((uint8_t*)_ptr-sizeof(int)-sizeof(SafeRefCount),_get_alloc_size(p_size));
ERR_FAIL_COND_V( !_ptrnew ,ERR_OUT_OF_MEMORY);
_ptr=_ptrnew;
_ptr=(T*)((uint8_t*)_ptrnew+sizeof(int)+sizeof(SafeRefCount));
*_get_size()=p_size;