1 /* Copyright (C) 1998, 1999 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: gsmemlok.h,v 1.5 2002/06/16 08:45:42 lpd Exp $ */ 18 /* Interface to monitor-locked heap memory allocator */ 19 20 /* Initial version 2/1/98 by John Desrosiers (soho@crl.com) */ 21 22 #if !defined(gsmemlok_INCLUDED) 23 # define gsmemlok_INCLUDED 24 25 #include "gsmemory.h" 26 #include "gxsync.h" 27 28 /* 29 * This allocator encapsulates another allocator with a mutex. 30 * Note that it does not keep track of memory that it acquires: 31 * thus free_all with FREE_ALL_DATA is a no-op. 32 */ 33 34 typedef struct gs_memory_locked_s { 35 gs_memory_common; /* interface outside world sees */ 36 gs_memory_t *target; /* allocator to front */ 37 gx_monitor_t *monitor; /* monitor to serialize access to functions */ 38 } gs_memory_locked_t; 39 40 /* ---------- Public constructors/destructors ---------- */ 41 42 /* Initialize a locked memory manager. */ 43 int gs_memory_locked_init( 44 gs_memory_locked_t * lmem, /* allocator to init */ 45 gs_memory_t * target /* allocator to monitor lock */ 46 ); 47 48 /* Release a locked memory manager. */ 49 /* Note that this has no effect on the target. */ 50 void gs_memory_locked_release(gs_memory_locked_t *lmem); 51 52 /* Get the target of a locked memory manager. */ 53 gs_memory_t * gs_memory_locked_target(const gs_memory_locked_t *lmem); 54 55 #endif /*!defined(gsmemlok_INCLUDED) */ 56