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/* Copyright (C) 2012 Matthew Fluet.
* Copyright (C) 1999-2007 Henry Cejtin, Matthew Fluet, Suresh
* Jagannathan, and Stephen Weeks.
* Copyright (C) 1997-2000 NEC Research Institute.
*
* MLton is released under a BSD-style license.
* See the file MLton-LICENSE for details.
*/
#if (defined (MLTON_GC_INTERNAL_TYPES))
/*
* Array objects have the following layout:
*
* counter ::
* length ::
* header ::
* ( (non heap-pointers)* :: (heap pointers)* )*
*
* The counter word is used by mark compact GC. The length word is
* the number of elements in the array. Array elements have the same
* individual layout as normal objects, omitting the header word.
*/
#define GC_ARRLEN_TYPE__(z) uint ## z ## _t
#define GC_ARRLEN_TYPE_(z) GC_ARRLEN_TYPE__(z)
#define GC_ARRLEN_TYPE GC_ARRLEN_TYPE_(GC_MODEL_ARRLEN_SIZE)
typedef GC_ARRLEN_TYPE GC_arrayLength;
#define GC_ARRAY_LENGTH_SIZE sizeof(GC_arrayLength)
#define PRIxARRLEN__(z) PRIx ## z
#define PRIxARRLEN_(z) PRIxARRLEN__(z)
#define PRIxARRLEN PRIxARRLEN_(GC_MODEL_ARRLEN_SIZE)
#define FMTARRLEN "%"PRIxARRLEN
typedef GC_arrayLength GC_arrayCounter;
#define GC_ARRAY_COUNTER_SIZE sizeof(GC_arrayCounter)
#define PRIxARRCTR PRIxARRLEN
#define FMTARRCTR "%"PRIxARRCTR
#define GC_ARRAY_HEADER_SIZE (GC_ARRAY_COUNTER_SIZE + GC_ARRAY_LENGTH_SIZE + GC_HEADER_SIZE)
COMPILE_TIME_ASSERT(sizeof_header__le__sizeof_arrlen,
sizeof(GC_header) <= sizeof(GC_arrayLength));
COMPILE_TIME_ASSERT(sizeof_arrlen__eq__sizeof_arrctr,
sizeof(GC_arrayLength) == sizeof(GC_arrayCounter));
#endif /* (defined (MLTON_GC_INTERNAL_TYPES)) */
#if (defined (MLTON_GC_INTERNAL_FUNCS))
static inline GC_arrayLength* getArrayLengthp (pointer a);
static inline GC_arrayLength getArrayLength (pointer a);
static inline GC_arrayCounter* getArrayCounterp (pointer a);
static inline GC_arrayCounter getArrayCounter (pointer a);
#if ASSERT
static inline pointer indexArrayAtObjptrIndex (GC_state s, pointer a,
GC_arrayCounter arrayIndex,
uint32_t objptrIndex);
#endif
#endif /* (defined (MLTON_GC_INTERNAL_FUNCS)) */
PRIVATE uintmax_t GC_getArrayLength (pointer a);
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