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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: *
25: */
26: /*
27: * HISTORY
28: *
29: * Revision 1.1.1.1 1998/09/22 21:05:34 wsanchez
30: * Import of Mac OS X kernel (~semeria)
31: *
32: * Revision 1.1.1.1 1998/03/07 02:25:54 wsanchez
33: * Import of OSF Mach kernel (~mburg)
34: *
35: * Revision 1.1.2.4 1995/10/09 17:13:55 devrcs
36: * Merged RT3_SHARED version into `mainline.'
37: * [1995/09/13 16:17:31 joe]
38: *
39: * Revision 1.1.2.3 1995/09/18 19:13:40 devrcs
40: * Merged RT3_SHARED version into `mainline.'
41: * [1995/09/13 16:17:31 joe]
42: *
43: * Revision 1.1.2.2 1995/01/10 05:11:19 devrcs
44: * mk6 CR801 - new file for mk6_shared from cnmk_shared.
45: * [1994/12/01 21:11:51 dwm]
46: *
47: * Revision 1.1.2.1 1994/10/21 18:28:53 joe
48: * Initial ETAP submission
49: * [1994/10/20 19:31:35 joe]
50: *
51: * $EndLog$
52: */
53: /*
54: * File : etap_pool.h
55: *
56: * The start_data_node structure is primarily needed to hold
57: * start information for read locks (since multiple readers
58: * can acquire a read lock). For consistency, however, the
59: * structure is used for write locks as well. Each complex
60: * lock will maintain a linked list of these structures.
61: */
62:
63: #ifndef _KERN_ETAP_POOL_H_
64: #define _KERN_ETAP_POOL_H_
65:
66: #include <kern/etap_options.h>
67: #include <mach/etap.h>
68: #include <mach/boolean.h>
69:
70: #if ETAP_LOCK_TRACE
71:
72: #include <cpus.h>
73: #include <mach/clock_types.h>
74: #include <mach/kern_return.h>
75: #include <kern/misc_protos.h>
76:
77: struct start_data_node {
78: unsigned int thread_id; /* thread id */
79: etap_time_t start_hold_time; /* time of last acquisition */
80: etap_time_t start_wait_time; /* time of first miss */
81: unsigned int start_pc; /* pc of acquiring function */
82: unsigned int end_pc; /* pc of relinquishing function */
83: struct start_data_node *next; /* pointer to next list entry */
84: };
85:
86: typedef struct start_data_node* start_data_node_t;
87:
88: /*
89: * The start_data_node pool is statically
90: * allocated and privatly maintained
91: */
92:
93: #define SD_POOL_ENTRIES (NCPUS * 256)
94:
95: extern void init_start_data_pool(void);
96: extern start_data_node_t get_start_data_node(void);
97: extern void free_start_data_node(start_data_node_t);
98:
99: #else /* ETAP_LOCK_TRACE */
100: typedef boolean_t start_data_node_t;
101: #define get_start_data_node()
102: #define free_start_start_data_node(node)
103: #endif /* ETAP_LOCK_TRACE */
104:
105: #define SD_ENTRY_NULL ((start_data_node_t) 0)
106:
107: #endif /* _KERN_ETAP_POOL_H_ */
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