-/*
+/*
* 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.
* 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
+#ifndef GC_TYPED_H
+#define GC_TYPED_H
+
+#ifndef GC_H
+# include "gc.h"
+#endif
#ifdef __cplusplus
extern "C" {
#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_WORDSZ (8*sizeof(GC_word))
-# define GC_get_bit(bm, index) \
- (((bm)[index/GC_WORDSZ] >> (index%GC_WORDSZ)) & 1)
-# define GC_set_bit(bm, index) \
- (bm)[index/GC_WORDSZ] |= ((GC_word)1 << (index%GC_WORDSZ))
-# define GC_WORD_OFFSET(t, f) (offsetof(t,f)/sizeof(GC_word))
-# define GC_WORD_LEN(t) (sizeof(t)/ sizeof(GC_word))
-# define GC_BITMAP_SIZE(t) ((GC_WORD_LEN(t) + GC_WORDSZ-1)/GC_WORDSZ)
+ /* The least significant bit of the first word is one if */
+ /* the first word in the object may be a pointer. */
+
+#define GC_WORDSZ (8 * sizeof(GC_word))
+#define GC_get_bit(bm, index) \
+ (((bm)[index / GC_WORDSZ] >> (index % GC_WORDSZ)) & 1)
+#define GC_set_bit(bm, index) \
+ (bm)[index / GC_WORDSZ] |= ((GC_word)1 << (index % GC_WORDSZ))
+#define GC_WORD_OFFSET(t, f) (offsetof(t,f) / sizeof(GC_word))
+#define GC_WORD_LEN(t) (sizeof(t) / sizeof(GC_word))
+#define GC_BITMAP_SIZE(t) ((GC_WORD_LEN(t) + GC_WORDSZ - 1) / GC_WORDSZ)
typedef GC_word GC_descr;
-GC_API GC_descr GC_CALL GC_make_descriptor(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_descr GC_CALL GC_make_descriptor(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. */
-/* It is possible to generate a descriptor for a C type T with */
-/* word aligned pointer fields f1, f2, ... as follows: */
-/* */
+/* It is possible to generate a descriptor for a C type T with */
+/* word aligned pointer fields f1, f2, ... as follows: */
+/* */
/* GC_descr T_descr; */
-/* GC_word T_bitmap[GC_BITMAP_SIZE(T)] = {0}; */
-/* GC_set_bit(T_bitmap, GC_WORD_OFFSET(T,f1)); */
-/* GC_set_bit(T_bitmap, GC_WORD_OFFSET(T,f2)); */
-/* ... */
-/* T_descr = GC_make_descriptor(T_bitmap, GC_WORD_LEN(T)); */
+/* GC_word T_bitmap[GC_BITMAP_SIZE(T)] = {0}; */
+/* GC_set_bit(T_bitmap, GC_WORD_OFFSET(T,f1)); */
+/* GC_set_bit(T_bitmap, GC_WORD_OFFSET(T,f2)); */
+/* ... */
+/* T_descr = GC_make_descriptor(T_bitmap, GC_WORD_LEN(T)); */
+
+GC_API void * GC_CALL GC_malloc_explicitly_typed(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. */
+ /* The returned object is cleared. */
-GC_API void * GC_CALL GC_malloc_explicitly_typed(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. */
- /* The returned object is cleared. */
+GC_API void * GC_CALL GC_malloc_explicitly_typed_ignore_off_page(
+ size_t /* size_in_bytes */,
+ GC_descr /* d */);
-GC_API void * GC_CALL GC_malloc_explicitly_typed_ignore_off_page
- (size_t size_in_bytes, GC_descr d);
-
-GC_API void * GC_CALL GC_calloc_explicitly_typed(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 element 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. */
- /* Returned object is cleared. */
+GC_API void * GC_CALL GC_calloc_explicitly_typed(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 element 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. */
+ /* Returned object is cleared. */
#ifdef GC_DEBUG
-# define GC_MALLOC_EXPLICITLY_TYPED(bytes, d) GC_MALLOC(bytes)
-# define GC_CALLOC_EXPLICITLY_TYPED(n, bytes, d) GC_MALLOC(n*bytes)
+# define GC_MALLOC_EXPLICITLY_TYPED(bytes, d) GC_MALLOC(bytes)
+# define GC_CALLOC_EXPLICITLY_TYPED(n, bytes, d) GC_MALLOC(n * bytes)
#else
-# define GC_MALLOC_EXPLICITLY_TYPED(bytes, d) \
- GC_malloc_explicitly_typed(bytes, d)
-# define GC_CALLOC_EXPLICITLY_TYPED(n, bytes, d) \
- GC_calloc_explicitly_typed(n, bytes, d)
-#endif /* !GC_DEBUG */
+# define GC_MALLOC_EXPLICITLY_TYPED(bytes, d) \
+ GC_malloc_explicitly_typed(bytes, d)
+# define GC_CALLOC_EXPLICITLY_TYPED(n, bytes, d) \
+ GC_calloc_explicitly_typed(n, bytes, d)
+#endif
#ifdef __cplusplus
} /* matches extern "C" */
#endif
-#endif /* _GC_TYPED_H */
-
+#endif /* GC_TYPED_H */
projects / cacao.git / blobdiff