mach/port_obj.c

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