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- /* Copyright (C) 1994 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin 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 Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin 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 Aladdin 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.
- */
-
- /* igc.h */
- /* Internal interfaces in Ghostscript GC */
-
- /* 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));
-
- };
-
- /* Exported by igcref.c for igc.c */
- void gs_mark_refs(P3(ref_packed *, ref *, bool));
- void ptr_ref_unmark(P2(void *, gc_state_t *));
- bool ptr_ref_mark(P2(void *, gc_state_t *));
- ref_packed *gs_reloc_ref_ptr(P2(ref_packed *, gc_state_t *));
-
- /* Exported by igcstr.c for igc.c */
- void gc_strings_set_marks(P2(chunk_t *, bool));
- bool gc_string_mark(P4(const byte *, uint, bool, gc_state_t *));
- void gc_strings_clear_reloc(P1(chunk_t *));
- void gc_strings_set_reloc(P1(chunk_t *));
- void gc_strings_compact(P1(chunk_t *));
-
- /* Macro for returning a relocated pointer */
- #ifdef DEBUG
- void *print_reloc_proc(P3(void *obj, const char *cname, void *robj));
- # define print_reloc(obj, cname, nobj)\
- (gs_debug_c('9') ? print_reloc_proc(obj, cname, nobj) :\
- (void *)(nobj))
- #else
- # define print_reloc(obj, cname, nobj)\
- (void *)(nobj)
- #endif
-
- /* Define the structure for holding GC state. */
- /*typedef struct gc_state_s gc_state_t;*/ /* in gsstruct.h */
- struct gc_state_s {
- chunk_locator_t loc;
- gs_ref_memory_t *local;
- gs_ref_memory_t *global;
- gs_ref_memory_t *system;
- };
-