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Diffstat (limited to 'gc/gc_typed.h')
| -rw-r--r-- | gc/gc_typed.h | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/gc/gc_typed.h b/gc/gc_typed.h deleted file mode 100644 index e4a6b94..0000000 --- a/gc/gc_typed.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. - * Copyright 1996 Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* - * Some simple primitives for allocation with explicit type information. - * Facilities for dynamic type inference may be added later. - * Should be used only for extremely performance critical applications, - * or if conservative collector leakage is otherwise a problem (unlikely). - * Note that this is implemented completely separately from the rest - * of the collector, and is not linked in unless referenced. - * This does not currently support GC_DEBUG in any interesting way. - */ -/* Boehm, May 19, 1994 2:13 pm PDT */ - -#ifndef _GC_TYPED_H -# define _GC_TYPED_H -# ifndef _GC_H -# include "gc.h" -# endif - -typedef GC_word * GC_bitmap; - /* The least significant bit of the first word is one if */ - /* the first word in the object may be a pointer. */ - -# define GC_get_bit(bm, index) \ - (((bm)[divWORDSZ(index)] >> modWORDSZ(index)) & 1) -# define GC_set_bit(bm, index) \ - (bm)[divWORDSZ(index)] |= (word)1 << modWORDSZ(index) - -typedef GC_word GC_descr; - -GC_API GC_descr GC_make_descriptor GC_PROTO((GC_bitmap bm, size_t len)); - /* Return a type descriptor for the object whose layout */ - /* is described by the argument. */ - /* The least significant bit of the first word is one */ - /* if the first word in the object may be a pointer. */ - /* The second argument specifies the number of */ - /* meaningful bits in the bitmap. The actual object */ - /* may be larger (but not smaller). Any additional */ - /* words in the object are assumed not to contain */ - /* pointers. */ - /* Returns a conservative approximation in the */ - /* (unlikely) case of insufficient memory to build */ - /* the descriptor. Calls to GC_make_descriptor */ - /* may consume some amount of a finite resource. This */ - /* is intended to be called once per type, not once */ - /* per allocation. */ - -GC_API GC_PTR GC_malloc_explicitly_typed - GC_PROTO((size_t size_in_bytes, GC_descr d)); - /* Allocate an object whose layout is described by d. */ - /* The resulting object MAY NOT BE PASSED TO REALLOC. */ - -GC_API GC_PTR GC_malloc_explicitly_typed_ignore_off_page - GC_PROTO((size_t size_in_bytes, GC_descr d)); - -GC_API GC_PTR GC_calloc_explicitly_typed - GC_PROTO((size_t nelements, - size_t element_size_in_bytes, - GC_descr d)); - /* Allocate an array of nelements elements, each of the */ - /* given size, and with the given descriptor. */ - /* The elemnt size must be a multiple of the byte */ - /* alignment required for pointers. E.g. on a 32-bit */ - /* machine with 16-bit aligned pointers, size_in_bytes */ - /* must be a multiple of 2. */ - -#ifdef GC_DEBUG -# define GC_MALLOC_EXPLICTLY_TYPED(bytes, d) GC_MALLOC(bytes) -# define GC_CALLOC_EXPLICTLY_TYPED(n, bytes, d) GC_MALLOC(n*bytes) -#else -# define GC_MALLOC_EXPLICTLY_TYPED(bytes, d) \ - GC_malloc_explicitly_typed(bytes, d) -# define GC_CALLOC_EXPLICTLY_TYPED(n, bytes, d) \ - GC_calloc_explicitly_typed(n, bytes, d) -#endif /* !GC_DEBUG */ - - -#endif /* _GC_TYPED_H */ - |