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- /* Copyright (C) 1994, 1995, 1996, 1998, 1999 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
- distributor accepts any responsibility for the consequences of using it, or
- for whether it serves any particular purpose or works at all, unless he or
- she says so in writing. Refer to the Aladdin Free Public License (the
- "License") for full details.
-
- Every copy of AFPL Ghostscript must include a copy of the License, normally
- in a plain ASCII text file named PUBLIC. The License grants you the right
- to copy, modify and redistribute AFPL Ghostscript, but only under certain
- conditions described in the License. Among other things, the License
- requires that the copyright notice and this notice be preserved on all
- copies.
- */
-
- /*$Id: igc.h,v 1.2 2000/09/19 19:00:44 lpd Exp $ */
- /* Internal interfaces in Ghostscript GC */
-
- #ifndef igc_INCLUDED
- # define igc_INCLUDED
-
- #include "istruct.h"
-
- /* Declare the vm_reclaim procedure for the real GC. */
- extern vm_reclaim_proc(gs_gc_reclaim);
-
- /* Define the procedures shared among a "genus" of structures. */
- /* Currently there are only two genera: refs, and all other structures. */
- struct struct_shared_procs_s {
-
- /* Clear the relocation information in an object. */
-
- #define gc_proc_clear_reloc(proc)\
- void proc(P2(obj_header_t *pre, uint size))
- gc_proc_clear_reloc((*clear_reloc));
-
- /* Compute any internal relocation for a marked object. */
- /* Return true if the object should be kept. */
- /* The reloc argument shouldn't be required, */
- /* but we need it for ref objects. */
-
- #define gc_proc_set_reloc(proc)\
- bool proc(P3(obj_header_t *pre, uint reloc, uint size))
- gc_proc_set_reloc((*set_reloc));
-
- /* Compact an object. */
-
- #define gc_proc_compact(proc)\
- void proc(P3(obj_header_t *pre, obj_header_t *dpre, uint size))
- gc_proc_compact((*compact));
-
- };
-
- /* Define the structure for holding GC state. */
- /*typedef struct gc_state_s gc_state_t; *//* in gsstruct.h */
- #ifndef name_table_DEFINED
- # define name_table_DEFINED
- typedef struct name_table_s name_table;
- #endif
- struct gc_state_s {
- const gc_procs_with_refs_t *procs; /* must be first */
- chunk_locator_t loc;
- vm_spaces spaces;
- int min_collect; /* avm_space */
- bool relocating_untraced; /* if true, we're relocating */
- /* pointers from untraced spaces */
- gs_raw_memory_t *heap; /* for extending mark stack */
- name_table *ntable; /* (implicitly referenced by names) */
- };
-
- /* Exported by igcref.c for igc.c */
- ptr_proc_unmark(ptr_ref_unmark);
- ptr_proc_mark(ptr_ref_mark);
- /*ref_packed *gs_reloc_ref_ptr(P2(const ref_packed *, gc_state_t *)); */
-
- /* Exported by ilocate.c for igc.c */
- void ialloc_validate_memory(P2(const gs_ref_memory_t *, gc_state_t *));
- void ialloc_validate_chunk(P2(const chunk_t *, gc_state_t *));
- void ialloc_validate_object(P3(const obj_header_t *, const chunk_t *,
- gc_state_t *));
-
- /* Macro for returning a relocated pointer */
- const void *print_reloc_proc(P3(const void *obj, const char *cname,
- const void *robj));
- #ifdef DEBUG
- # define print_reloc(obj, cname, nobj)\
- (gs_debug_c('9') ? print_reloc_proc(obj, cname, nobj) : nobj)
- #else
- # define print_reloc(obj, cname, nobj) (nobj)
- #endif
-
- #endif /* igc_INCLUDED */
-