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#ifndef _LIBJOVE_OBJECT_UNTYPED_H
#define _LIBJOVE_OBJECT_UNTYPED_H 1
#include <jove/object-typed.h>
#include <jove/object-dir.h>
/**@STRUCT Represents a KO_MEMOY_UNTYPED*/
typedef struct _KernelObjectUntyped
{
KernelObjectTyped typed;
size_t bytes;
intmax_t alignment;
KernelObjectTyped *children_head;
KernelObjectTyped *sibling;
} KernelObjectUntyped;
extern KernelObjectDirectory __jove_untyped_directory;
/**@FUNC INTERNAL FUNCTION DO NOT USE.
* Initializes a block of memory as an untyped object.
* @PARAM untyped pointer to new block of memory.
* @PARAM parent directory this new object is a member of.
* @PARAM membi index to place this new object.*/
void _jove_alloc_untyped_inplace(KernelObjectUntyped *untyped, struct _KernelObjectDirectory *parent, uint8_t membi);
/**@FUNC INTERNAL FUNCTION DO NOT USE.
* Allocates a block of memory representing an untyped object into the heap.
* @PARAM parent directory this new object is a member of.
* @PARAM membi index to place this new object.
* @RETURN pointer to allocated object. NULL on failure.
* Possible failures:
* EJOVE_NOALLOC: libjove does not have an allocator set yet.
* EJOVE_FULL: destination is already taken.*/
KernelObjectUntyped *_jove_alloc_untyped(struct _KernelObjectDirectory *parent, uint8_t membi);
/**@FUNC Changes pointer type of typed object to untyped if correct.
* @PARAM typed pointer to convert.
* @RETURN pointer as KernelObjectUntyped*, NULL on failure.
* Possible failures:
* EJOVE_BADOBJ: passed object is not an untyped.*/
KernelObjectUntyped *jove_object_as_untyped(KernelObjectTyped *typed);
/**@FUNC Gets the number of bytes a given untyped block represents.
* @PARAM untyped block of untyped memory.
* @RETURN number of bytes. negative on failure.
* Possible failures:
* EJOVE_BADOBJ: passed object does not exist / is not an untyped. */
int jove_untyped_size(KernelObjectUntyped *untyped);
/**@FUNC Gets the byte alignment of a given untyped block up to a page.
* @PARAM untyped block of untyped memory.
* @RETURN alignment in bytes. negative on failure.*/
int jove_untyped_alignment(KernelObjectUntyped *untyped);
/**@FUNC Splits a given untyped block of memory into a block with the given size
* and the remainder. New untyped object is stored in dest at destmemb.
* @PARAM untyped block of untyped memory to split.
* @PARAM bytes number of bytes the new block should have.
* Minimum sizeof(size_t)
* @PARAM dest directory to store the new block.
* @PARAM destmemb index in dest to store new block.
* @RETURN Newly created block of memory. NULL on failure.
* Possible failures:
* EJOVE_BADSIZE: bytes < sizeof(size_t)
* EJOVE_BADOBJ: dest or untyped are incorrect types / do not exist.*/
KernelObjectUntyped *jove_untyped_split(
KernelObjectUntyped *untyped, size_t bytes,
KernelObjectDirectory *dest, uint8_t destmemb);
JoveError jove_untyped_split_inplace(
KernelObjectUntyped *untyped,
size_t bytes,
KernelObjectUntyped *dest);
#endif
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