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ipc_target.h

ipc_target.h 2.1 KB
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  1. /*
    2. 

  2.  * Copyright (c) 1994 The University of Utah and
    3. 

  3.  * the Computer Systems Laboratory (CSL).  All rights reserved.
    4. 

  4.  *
    5. 

  5.  * Permission to use, copy, modify and distribute this software and its
    6. 

  6.  * documentation is hereby granted, provided that both the copyright
    7. 

  7.  * notice and this permission notice appear in all copies of the
    8. 

  8.  * software, derivative works or modified versions, and any portions
    9. 

  9.  * thereof, and that both notices appear in supporting documentation.
    10. 

  10.  *
    11. 

  11.  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
    12. 

  12.  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
    13. 

  13.  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
    14. 

  14.  *
    15. 

  15.  * CSL requests users of this software to return to csl-dist@cs.utah.edu any
    16. 

  16.  * improvements that they make and grant CSL redistribution rights.
    17. 

  17.  */
    18. 

  18. /*
    19. 

  19.  *	File:	ipc_target.h
    20. 

  20.  *
    21. 

  21.  *	Common part of IPC ports and port sets
    22. 

  22.  *	representing a target of messages and migrating RPCs.
    23. 

  23.  */
    24. 

  24. 

  25. #ifndef	_IPC_IPC_RECEIVER_H_
    26. 

  26. #define _IPC_IPC_RECEIVER_H_
    27. 

  27. 

  28. #include "ipc_mqueue.h"
    29. 

  29. #include "ipc_object.h"
    30. 

  30. #include <mach/rpc.h>
    31. 

  31. 

  32. typedef struct ipc_target {
    33. 

  33. 

  34. 	struct ipc_object ipt_object;
    35. 

  35. 

  36. 	mach_port_t ipt_name;
    37. 

  37. 	struct ipc_mqueue ipt_messages;
    38. 

  38. 

  39. #ifdef MIGRATING_THREADS
    40. 

  40. 	/*** Migrating RPC stuff ***/
    41. 

  41. 

  42. 	int ipt_type;
    43. 

  43. 

  44. 	/* User entry info for migrating RPC */
    45. 

  45. 	rpc_info_t ipt_rpcinfo;
    46. 

  46. 

  47. 	/* List of available activations, all active but not in use.  */
    48. 

  48. 	struct Act *ipt_acts;
    49. 

  49. 

  50. 	/* TRUE if someone is waiting for an activation from this pool.  */
    51. 

  51. 	int ipt_waiting;
    52. 

  52. #endif /* MIGRATING_THREADS */
    53. 

  53. 

  54. } *ipc_target_t;
    55. 

  55. 

  56. #define IPT_TYPE_MESSAGE_RPC	1
    57. 

  57. #define IPT_TYPE_MIGRATE_RPC	2
    58. 

  58. 

  59. void ipc_target_init(struct ipc_target *ipt, mach_port_t name);
    60. 

  60. void ipc_target_terminate(struct ipc_target *ipt);
    61. 

  61. 

  62. #define ipt_lock(ipt)		io_lock(&(ipt)->ipt_object)
    63. 

  63. #define ipt_unlock(ipt)		io_unlock(&(ipt)->ipt_object)
    64. 

  64. #define ipt_reference(ipt)	io_reference(&(ipt)->ipt_object)
    65. 

  65. #define ipt_release(ipt)	io_release(&(ipt)->ipt_object)
    66. 

  66. #define ipt_check_unlock(ipt)	io_check_unlock(&(ipt)->ipt_object)
    67. 

  67. 

  68. #endif	/* _IPC_IPC_RECEIVER_H_ */
    69. 

  69.