1 | /* |
2 | * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. |
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27 | */ |
28 | /* |
29 | * @OSF_COPYRIGHT@ |
30 | */ |
31 | /* |
32 | * Mach Operating System |
33 | * Copyright (c) 1991,1990,1989 Carnegie Mellon University |
34 | * All Rights Reserved. |
35 | * |
36 | * Permission to use, copy, modify and distribute this software and its |
37 | * documentation is hereby granted, provided that both the copyright |
38 | * notice and this permission notice appear in all copies of the |
39 | * software, derivative works or modified versions, and any portions |
40 | * thereof, and that both notices appear in supporting documentation. |
41 | * |
42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
43 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
44 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
45 | * |
46 | * Carnegie Mellon requests users of this software to return to |
47 | * |
48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
49 | * School of Computer Science |
50 | * Carnegie Mellon University |
51 | * Pittsburgh PA 15213-3890 |
52 | * |
53 | * any improvements or extensions that they make and grant Carnegie Mellon |
54 | * the rights to redistribute these changes. |
55 | */ |
56 | /* |
57 | */ |
58 | /* |
59 | * File: ipc/ipc_pset.h |
60 | * Author: Rich Draves |
61 | * Date: 1989 |
62 | * |
63 | * Definitions for port sets. |
64 | */ |
65 | |
66 | #ifndef _IPC_IPC_PSET_H_ |
67 | #define _IPC_IPC_PSET_H_ |
68 | |
69 | #include <mach/mach_types.h> |
70 | #include <mach/port.h> |
71 | #include <mach/kern_return.h> |
72 | #include <kern/kern_types.h> |
73 | #include <ipc/ipc_types.h> |
74 | #include <ipc/ipc_object.h> |
75 | #include <ipc/ipc_mqueue.h> |
76 | |
77 | struct ipc_pset { |
78 | /* |
79 | * Initial sub-structure in common with all ipc_objects. |
80 | */ |
81 | struct ipc_object ips_object; |
82 | struct waitq_set ips_wqset; |
83 | struct klist ips_klist; |
84 | }; |
85 | |
86 | #define ips_object_to_pset(io) __container_of(io, struct ipc_pset, ips_object) |
87 | #define ips_to_object(pset) (&(pset)->ips_object) |
88 | |
89 | static inline ipc_pset_t |
90 | ips_from_waitq(waitq_t wq) |
91 | { |
92 | return __container_of(wq.wqs_set, struct ipc_pset, ips_wqset); |
93 | } |
94 | |
95 | #define ips_active(pset) io_active(ips_to_object(pset)) |
96 | #define ips_mq_lock_held(pset) io_lock_held(ips_to_object(pset)) |
97 | #define ips_mq_lock(pset) ipc_object_lock(ips_to_object(pset), IOT_PORT_SET) |
98 | #define ips_mq_lock_held_kdp(pset) io_lock_held_kdp(ips_to_object(pset)) |
99 | #define ips_mq_unlock(pset) io_unlock(ips_to_object(pset)) |
100 | #define ips_reference(pset) io_reference(ips_to_object(pset)) |
101 | #define ips_release(pset) io_release(ips_to_object(pset)) |
102 | #define ips_validate(pset) \ |
103 | zone_id_require(ZONE_ID_IPC_PORT_SET, sizeof(struct ipc_pset), pset) |
104 | #define ips_validate_aligned(pset) \ |
105 | zone_id_require_aligned(ZONE_ID_IPC_PORT_SET, pset) |
106 | |
107 | /* Allocate a port set */ |
108 | extern kern_return_t ipc_pset_alloc( |
109 | ipc_space_t space, |
110 | mach_port_name_t *namep, |
111 | ipc_pset_t *psetp); |
112 | |
113 | /* Allocate a port set, with a specific name */ |
114 | extern kern_return_t ipc_pset_alloc_name( |
115 | ipc_space_t space, |
116 | mach_port_name_t name, |
117 | ipc_pset_t *psetp); |
118 | |
119 | /* Allocate a port set in a special space */ |
120 | extern ipc_pset_t ipc_pset_alloc_special( |
121 | ipc_space_t space); |
122 | |
123 | /* Destroy a port_set */ |
124 | extern void ipc_pset_destroy( |
125 | ipc_space_t space, |
126 | ipc_pset_t pset); |
127 | |
128 | /* Finalize the destruction of a pset before it gets freed */ |
129 | extern void ipc_pset_finalize( |
130 | ipc_pset_t pset); |
131 | |
132 | #if MACH_KERNEL_PRIVATE |
133 | extern struct turnstile *filt_ipc_kqueue_turnstile( |
134 | struct knote *kn); |
135 | |
136 | extern bool filt_machport_kqueue_has_turnstile( |
137 | struct knote *kn); |
138 | |
139 | extern void filt_machport_turnstile_prepare_lazily( |
140 | struct knote *kn, |
141 | mach_msg_type_name_t msgt_name, |
142 | ipc_port_t port); |
143 | |
144 | extern struct turnstile *filt_machport_stash_port( |
145 | struct knote *kn, |
146 | ipc_port_t port, |
147 | int *link); |
148 | #endif |
149 | |
150 | #endif /* _IPC_IPC_PSET_H_ */ |
151 | |