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/* Copyright (C) 1995, 1998 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gsalloc.h,v 1.7 2004/08/04 19:36:12 stefan Exp $ */
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/* Memory allocator extensions for standard allocator */
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#ifndef gsalloc_INCLUDED
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# define gsalloc_INCLUDED
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/* The following should not be needed at this level! */
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#ifndef gs_ref_memory_DEFINED
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# define gs_ref_memory_DEFINED
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typedef struct gs_ref_memory_s gs_ref_memory_t;
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#endif
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/*
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* Define a structure and interface for GC-related allocator state.
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*/
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typedef struct gs_memory_gc_status_s {
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/* Set by client */
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long vm_threshold; /* GC interval */
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long max_vm; /* maximum allowed allocation */
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int *psignal; /* if not NULL, store signal_value */
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/* here if we go over the vm_threshold */
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int signal_value; /* value to store in *psignal */
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bool enabled; /* auto GC enabled if true */
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/* Set by allocator */
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long requested; /* amount of last failing request */
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} gs_memory_gc_status_t;
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void gs_memory_gc_status(const gs_ref_memory_t *, gs_memory_gc_status_t *);
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void gs_memory_set_gc_status(gs_ref_memory_t *, const gs_memory_gc_status_t *);
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void gs_memory_set_vm_threshold(gs_ref_memory_t * mem, long val);
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void gs_memory_set_vm_reclaim(gs_ref_memory_t * mem, bool enabled);
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/* ------ Initialization ------ */
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/*
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* Allocate and mostly initialize the state of an allocator (system, global,
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* or local). Does not initialize global or space.
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*/
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gs_ref_memory_t *ialloc_alloc_state(gs_memory_t *, uint);
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/*
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* Add a chunk to an externally controlled allocator. Such allocators
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* allocate all objects as immovable, are not garbage-collected, and
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* don't attempt to acquire additional memory (or free chunks) on their own.
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*/
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int ialloc_add_chunk(gs_ref_memory_t *, ulong, client_name_t);
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/* ------ Internal routines ------ */
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/* Prepare for a GC. */
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void ialloc_gc_prepare(gs_ref_memory_t *);
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/* Initialize after a save. */
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void ialloc_reset(gs_ref_memory_t *);
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/* Initialize after a save or GC. */
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void ialloc_reset_free(gs_ref_memory_t *);
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/* Set the cached allocation limit of an alloctor from its GC parameters. */
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void ialloc_set_limit(gs_ref_memory_t *);
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/* Consolidate free objects. */
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void ialloc_consolidate_free(gs_ref_memory_t *);
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#endif /* gsalloc_INCLUDED */
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