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/*
* Copyright (c) 2007-2011 by Hewlett-Packard Company. 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.
*
*/
#ifndef GC_DISCLAIM_H
#define GC_DISCLAIM_H
#include "gc.h"
/* This API is defined only if the library has been suitably compiled */
/* (i.e. with ENABLE_DISCLAIM defined). */
/* Prepare the object kind used for GC_finalized_malloc. */
GC_API void GC_CALL GC_init_finalized_malloc(void);
/* Type of a disclaim call-back, always stored along with closure data */
/* passed as the second argument. */
typedef int (GC_CALLBACK * GC_disclaim_proc)(void * /*obj*/, void * /*cd*/);
/* Register "proc" to be called on each object of "kind" ready to be */
/* reclaimed. If "proc" returns non-zero, the collector will not */
/* reclaim the object on this GC cycle. Objects reachable from "proc" */
/* will be protected from collection if "mark_from_all" is non-zero, */
/* but at the expense that long chains of objects will take many cycles */
/* to reclaim. */
GC_API void GC_CALL GC_register_disclaim_proc(int /*kind*/,
GC_disclaim_proc /*proc*/,
void * /*cd*/,
int /*mark_from_all*/);
/* The finalizer closure used by GC_finalized_malloc. */
struct GC_finalizer_closure {
GC_finalization_proc proc;
void *cd;
};
/* Allocate "size" bytes which is finalized by "fc". This uses a */
/* dedicated object kind with a disclaim procedure, and is more */
/* efficient than GC_register_finalizer and friends. */
/* GC_init_finalized_malloc must be called before using this. */
GC_API void *GC_CALL GC_finalized_malloc(size_t /*size*/,
struct GC_finalizer_closure * /*fc*/);
#endif
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