/*
-Copyright (C) 2017 Keziah Wesley
+Copyright (C) 2017-2018 Keziah Wesley
You can redistribute and/or modify this file under the terms of the
GNU Affero General Public License as published by the Free Software
#include <stdbool.h>
#include <stdint.h>
-/// 0, or a "pointer" to an object allocated in the pool
typedef uint32_t pool_ptr;
-/// 0, or a "pointer" to an object allocated in the heap
typedef int32_t heap_ptr;
typedef union pool_object pool_object;
typedef union object object;
-
-extern char *vhp_base; // object
-extern char *vhp; // object
+typedef union uv_val uv_val;
pool_object *POOL_OBJECT (pool_ptr p);
-
-// TODO make (heap_ptr)0 nullish
-static inline object *
-OBJECT_OF_HEAP_PTR (heap_ptr p)
-{
- assert (p >= 0);
- return (object *) (vhp_base + (p << 4));
-}
+object *HEAP_OBJECT (heap_ptr p);
+uv_val *UV_VAL (heap_ptr p);
pool_ptr pool_alloc (uint32_t len);
-
-static inline heap_ptr
-HEAP_PTR_OF_OBJECT (object * p)
+heap_ptr heap_alloc (uint32_t len);
+inline static heap_ptr
+heap_alloc_uv (uint32_t len)
{
- assert ((uintptr_t) p >= (uintptr_t) vhp_base);
- heap_ptr h = (heap_ptr) ((uintptr_t) p - (uintptr_t) vhp_base);
- return h;
-}
-
-static inline object *
-heap_alloc (uint32_t len)
-{
- enum
- { DOPE_LEN = 1 };
- char *p = vhp;
- vhp += (len + DOPE_LEN) << 4;
- return (object *) p;
+ // divide by 2 (rounding up), then add one for dope
+ return heap_alloc (((len + 1) >> 1) + 1);
}
// given a headerless array of objects of known size,
-// copy it backwards into newly-allocated pool space
+// copy it into newly-allocated pool space
+pool_ptr pool_copy_array (const pool_object * objs, uint32_t len);
+// same as above, but backwards
pool_ptr pool_copy_array_rev (const pool_object * objs, uint32_t len);
-
-// given a headerless array of objects of known size,
-// copy it backwards into a newly-allocated vector body
heap_ptr heap_copy_array_rev (const object * objs, uint32_t len);
#endif // ALLOC_H