src/runtime/gc-internal.h

   1 /*
   2  * garbage collection - shared definitions for modules "inside" the GC system
   3  */
   4
   5 /*
   6  * This software is part of the SBCL system. See the README file for
   7  * more information.
   8  *
   9  * This software is derived from the CMU CL system, which was
  10  * written at Carnegie Mellon University and released into the
  11  * public domain. The software is in the public domain and is
  12  * provided with absolutely no warranty. See the COPYING and CREDITS
  13  * files for more information.
  14  */
  15
  16 #ifndef _GC_INTERNAL_H_
  17 #define _GC_INTERNAL_H_
  18
  19 #if 1
  20 #define gc_assert(ex) do { \
  21         if (!(ex)) gc_abort(); \
  22 } while (0)
  23 #else
  24 #define gc_assert(ex)
  25 #endif
  26 #define gc_abort() lose("GC invariant lost, file \"%s\", line %d", \
  27                         __FILE__, __LINE__)
  28
  29 #define CEILING(x,y) (((x) + ((y) - 1)) & (~((y) - 1)))
  30 #define NWORDS(x,y) (CEILING((x),(y)) / (y))
  31
  32 /* FIXME: Shouldn't this be defined in sbcl.h? */
  33 #define FUN_RAW_ADDR_OFFSET (6*sizeof(lispobj) - FUN_POINTER_LOWTAG)
  34
  35 /* values for the *_alloc_* parameters */
  36 #define FREE_PAGE 0
  37 #define BOXED_PAGE 1
  38 #define UNBOXED_PAGE 2
  39 #define OPEN_REGION_PAGE 4
  40
  41 #define ALLOC_BOXED 0
  42 #define ALLOC_UNBOXED 1
  43 #define ALLOC_QUICK 1
  44
  45 void *gc_general_alloc(int nbytes,int unboxed_p,int quick_p);
  46
  47 extern int (*scavtab[256])(lispobj *where, lispobj object);
  48 extern lispobj (*transother[256])(lispobj object);
  49 extern int (*sizetab[256])(lispobj *where);
  50
  51 extern struct weak_pointer *weak_pointers; /* in gc-common.c */
  52
  53 extern void scavenge(lispobj *start, long n_words);
  54 extern void scan_weak_pointers(void);
  55
  56 lispobj  copy_large_unboxed_object(lispobj object, int nwords);
  57 lispobj  copy_unboxed_object(lispobj object, int nwords);
  58 lispobj  copy_large_object(lispobj object, int nwords);
  59 lispobj  copy_object(lispobj object, int nwords);
  60
  61 #ifdef LISP_FEATURE_GENCGC
  62 #include "gencgc-internal.h"
  63 #else
  64 #include "cheneygc-internal.h"
  65 #endif
  66
  67 #endif /* _GC_INTERNAL_H_ */