mach/port_obj.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28
  29 /*
  30  * Define a service to map from a kernel-generated port name
  31  * to server-defined "type" and "value" data to be associated
  32  * with the port.
  33  */
  34 #include <mach/port_obj.h>
  35 #include <mach/mach.h>
  36
  37 #define DEFAULT_TABLE_SIZE      (64 * 1024)
  38
  39 struct port_obj_tentry *port_obj_table;
  40 int port_obj_table_size = DEFAULT_TABLE_SIZE;
  41
  42 void port_obj_init(
  43         int maxsize)
  44 {
  45         kern_return_t kr;
  46
  47         kr = vm_allocate(mach_task_self(),
  48                 (vm_offset_t *)&port_obj_table,
  49                 (vm_size_t)(maxsize * sizeof (*port_obj_table)),
  50                 TRUE);
  51         if (kr != KERN_SUCCESS)
  52                 panic("port_obj_init: can't vm_allocate");
  53 }