projects / apple / xnu.git / blame
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|---|---|---|
| 1c79356b A |
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_ */ |