X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..4ba76501152d51ccb5647018f3192c6096367d48:/osfmk/ipc/ipc_table.h diff --git a/osfmk/ipc/ipc_table.h b/osfmk/ipc/ipc_table.h index 16a02b303..28e79b356 100644 --- a/osfmk/ipc/ipc_table.h +++ b/osfmk/ipc/ipc_table.h @@ -1,115 +1,55 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. - * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ - */ -/* - * @OSF_COPYRIGHT@ - */ -/* - * HISTORY - * - * Revision 1.1.1.1 1998/09/22 21:05:28 wsanchez - * Import of Mac OS X kernel (~semeria) + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * Revision 1.2 1998/05/29 23:50:33 youngwor - * Added infrastructure for shared port space support + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * Revision 1.1.1.1 1998/03/07 02:26:16 wsanchez - * Import of OSF Mach kernel (~mburg) + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. * - * Revision 1.1.8.3 1995/01/06 19:46:05 devrcs - * mk6 CR668 - 1.3b26 merge - * 64bit cleanup - * [1994/10/14 03:41:41 dwm] + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * Revision 1.1.8.2 1994/09/23 02:12:26 ezf - * change marker to not FREE - * [1994/09/22 21:30:53 ezf] - * - * Revision 1.1.8.1 1994/08/18 23:11:45 widyono - * RT IPC from RT2_SHARED - * [1994/08/18 15:49:24 widyono] - * - * Revision 1.1.6.1 1994/07/29 07:33:22 widyono - * Define default target size, ITS_SIZE_NONE - * [1994/07/28 22:27:01 widyono] - * - * Revision 1.1.2.4 1993/07/22 16:17:33 rod - * Add ANSI prototypes. CR #9523. - * [1993/07/22 13:33:33 rod] - * - * Revision 1.1.2.3 1993/06/07 22:11:46 jeffc - * CR9176 - ANSI C violations: trailing tokens on CPP - * directives, extra semicolons after decl_ ..., asm keywords - * [1993/06/07 19:02:58 jeffc] - * - * Revision 1.1.2.2 1993/06/02 23:34:02 jeffc - * Added to OSF/1 R1.3 from NMK15.0. - * [1993/06/02 21:11:17 jeffc] - * - * Revision 1.1 1992/09/30 02:29:14 robert - * Initial revision - * - * $EndLog$ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ -/* CMU_HIST */ /* - * Revision 2.5 91/05/14 16:37:52 mrt - * Correcting copyright - * - * Revision 2.4 91/03/16 14:49:01 rpd - * Added ipc_table_realloc. - * [91/03/04 rpd] - * - * Revision 2.3 91/02/05 17:24:19 mrt - * Changed to new Mach copyright - * [91/02/01 15:52:19 mrt] - * - * Revision 2.2 90/06/02 14:52:02 rpd - * Created for new IPC. - * [90/03/26 21:04:35 rpd] - * + * @OSF_COPYRIGHT@ */ -/* CMU_ENDHIST */ -/* +/* * Mach Operating System * Copyright (c) 1991,1990,1989 Carnegie Mellon University * All Rights Reserved. - * + * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. - * + * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * + * * Carnegie Mellon requests users of this software to return to - * + * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 - * + * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ @@ -124,12 +64,15 @@ * and dead-name requests (ipc_port_request_t). */ -#ifndef _IPC_IPC_TABLE_H_ -#define _IPC_IPC_TABLE_H_ +#ifndef _IPC_IPC_TABLE_H_ +#define _IPC_IPC_TABLE_H_ +#include #include #include +#include + /* * The is_table_next field of an ipc_space_t points to * an ipc_table_size structure. These structures must @@ -158,80 +101,51 @@ * The ipr_size field points to the currently used ipc_table_size. */ -typedef natural_t ipc_table_index_t; /* index into tables */ -typedef natural_t ipc_table_elems_t; /* size of tables */ - -typedef struct ipc_table_size { - ipc_table_elems_t its_size; /* number of elements in table */ -} *ipc_table_size_t; - -#define ITS_NULL ((ipc_table_size_t) 0) -#define ITS_SIZE_NONE -1 +struct ipc_table_size { + ipc_table_elems_t its_size; /* number of elements in table */ +}; extern ipc_table_size_t ipc_table_entries; -extern ipc_table_size_t ipc_table_dnrequests; +extern ipc_table_size_t ipc_table_requests; /* Initialize IPC capabilities table storage */ extern void ipc_table_init(void); /* - * Note that ipc_table_alloc, ipc_table_realloc, and ipc_table_free - * all potentially use the VM system. Hence simple locks can't + * Note that ipc_table_alloc and ipc_table_free + * potentially use the VM system. Hence simple locks can't * be held across them. - * - * We can't use a copying realloc, because the realloc happens - * with the data unlocked. ipc_table_realloc remaps the data, - * so it is OK. */ /* Allocate a table */ -extern vm_offset_t ipc_table_alloc( - vm_size_t size); - -/* Reallocate a big table */ -extern vm_offset_t ipc_table_realloc( - vm_size_t old_size, - vm_offset_t old_table, - vm_size_t new_size); +extern void * ipc_table_alloc( + vm_size_t size); /* Free a table */ extern void ipc_table_free( - vm_size_t size, - vm_offset_t table); - -#define it_entries_reallocable(its) \ - ((its)->its_size * sizeof(struct ipc_entry) >= PAGE_SIZE) - -#define it_entries_alloc(its) \ - ((ipc_entry_t) \ - ipc_table_alloc(it_entries_reallocable(its) ? \ - round_page((its)->its_size * sizeof(struct ipc_entry)) : \ - (its)->its_size * sizeof(struct ipc_entry) \ - )) - -#define it_entries_realloc(its, table, nits) \ - ((ipc_entry_t) \ - ipc_table_realloc( \ - round_page((its)->its_size * sizeof(struct ipc_entry)), \ - (vm_offset_t)(table), \ - round_page((nits)->its_size * sizeof(struct ipc_entry)) \ - )) - -#define it_entries_free(its, table) \ - ipc_table_free(it_entries_reallocable(its) ? \ - round_page((its)->its_size * sizeof(struct ipc_entry)) : \ - (its)->its_size * sizeof(struct ipc_entry), \ - (vm_offset_t)(table) \ - ) - -#define it_dnrequests_alloc(its) \ - ((ipc_port_request_t) \ - ipc_table_alloc((its)->its_size * \ - sizeof(struct ipc_port_request))) - -#define it_dnrequests_free(its, table) \ - ipc_table_free((its)->its_size * \ - sizeof(struct ipc_port_request), \ - (vm_offset_t)(table)) - -#endif /* _IPC_IPC_TABLE_H_ */ + vm_size_t size, + void * table); + +#define it_entries_alloc(its) \ + ((ipc_entry_t) \ + ipc_table_alloc((its)->its_size * sizeof(struct ipc_entry))) + +#define it_entries_free(its, table) \ + ipc_table_free((its)->its_size * sizeof(struct ipc_entry), \ + (void *)(table)) + + +#define it_requests_alloc(its) \ + ((ipc_port_request_t) \ + ipc_table_alloc((its)->its_size * \ + sizeof(struct ipc_port_request))) + +#define it_requests_free(its, table) \ + ipc_table_free((its)->its_size * \ + sizeof(struct ipc_port_request), \ + (void *)(table)) + +extern unsigned int ipc_table_max_entries(void); +extern unsigned int ipc_table_max_requests(void); + +#endif /* _IPC_IPC_TABLE_H_ */