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718e3744 | 1 | /* Thread management routine header. |
2 | * Copyright (C) 1998 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #ifndef _ZEBRA_THREAD_H | |
23 | #define _ZEBRA_THREAD_H | |
24 | ||
25 | #ifdef HAVE_RUSAGE | |
26 | #define RUSAGE_T struct rusage | |
27 | #define GETRUSAGE(X) getrusage (RUSAGE_SELF, X); | |
28 | #else | |
29 | #define RUSAGE_T struct timeval | |
30 | #define GETRUSAGE(X) gettimeofday (X, NULL); | |
31 | #endif /* HAVE_RUSAGE */ | |
32 | ||
33 | /* Linked list of thread. */ | |
34 | struct thread_list | |
35 | { | |
36 | struct thread *head; | |
37 | struct thread *tail; | |
38 | int count; | |
39 | }; | |
40 | ||
41 | /* Master of the theads. */ | |
42 | struct thread_master | |
43 | { | |
44 | struct thread_list read; | |
45 | struct thread_list write; | |
46 | struct thread_list timer; | |
47 | struct thread_list event; | |
48 | struct thread_list ready; | |
49 | struct thread_list unuse; | |
50 | fd_set readfd; | |
51 | fd_set writefd; | |
52 | fd_set exceptfd; | |
53 | unsigned long alloc; | |
54 | }; | |
55 | ||
56 | /* Thread itself. */ | |
57 | struct thread | |
58 | { | |
59 | unsigned char type; /* thread type */ | |
e04ab74d | 60 | unsigned char add_type; /* thread type */ |
718e3744 | 61 | struct thread *next; /* next pointer of the thread */ |
62 | struct thread *prev; /* previous pointer of the thread */ | |
63 | struct thread_master *master; /* pointer to the struct thread_master. */ | |
64 | int (*func) (struct thread *); /* event function */ | |
65 | void *arg; /* event argument */ | |
66 | union { | |
67 | int val; /* second argument of the event. */ | |
68 | int fd; /* file descriptor in case of read/write. */ | |
69 | struct timeval sands; /* rest of time sands value. */ | |
70 | } u; | |
71 | RUSAGE_T ru; /* Indepth usage info. */ | |
e04ab74d | 72 | char* funcname; |
73 | }; | |
74 | ||
75 | struct cpu_thread_history { | |
76 | int (*func)(struct thread *); | |
77 | char *funcname; | |
78 | unsigned int total_calls; | |
79 | unsigned long total, max; | |
80 | unsigned char types; | |
718e3744 | 81 | }; |
82 | ||
83 | /* Thread types. */ | |
84 | #define THREAD_READ 0 | |
85 | #define THREAD_WRITE 1 | |
86 | #define THREAD_TIMER 2 | |
87 | #define THREAD_EVENT 3 | |
88 | #define THREAD_READY 4 | |
89 | #define THREAD_UNUSED 5 | |
e04ab74d | 90 | #define THREAD_EXECUTE 6 |
718e3744 | 91 | |
92 | /* Thread yield time. */ | |
93 | #define THREAD_YIELD_TIME_SLOT 100 * 1000L /* 100ms */ | |
94 | ||
95 | /* Macros. */ | |
96 | #define THREAD_ARG(X) ((X)->arg) | |
97 | #define THREAD_FD(X) ((X)->u.fd) | |
98 | #define THREAD_VAL(X) ((X)->u.val) | |
99 | ||
100 | #define THREAD_READ_ON(master,thread,func,arg,sock) \ | |
101 | do { \ | |
102 | if (! thread) \ | |
103 | thread = thread_add_read (master, func, arg, sock); \ | |
104 | } while (0) | |
105 | ||
106 | #define THREAD_WRITE_ON(master,thread,func,arg,sock) \ | |
107 | do { \ | |
108 | if (! thread) \ | |
109 | thread = thread_add_write (master, func, arg, sock); \ | |
110 | } while (0) | |
111 | ||
112 | #define THREAD_TIMER_ON(master,thread,func,arg,time) \ | |
113 | do { \ | |
114 | if (! thread) \ | |
115 | thread = thread_add_timer (master, func, arg, time); \ | |
116 | } while (0) | |
117 | ||
118 | #define THREAD_OFF(thread) \ | |
119 | do { \ | |
120 | if (thread) \ | |
121 | { \ | |
122 | thread_cancel (thread); \ | |
123 | thread = NULL; \ | |
124 | } \ | |
125 | } while (0) | |
126 | ||
127 | #define THREAD_READ_OFF(thread) THREAD_OFF(thread) | |
128 | #define THREAD_WRITE_OFF(thread) THREAD_OFF(thread) | |
129 | #define THREAD_TIMER_OFF(thread) THREAD_OFF(thread) | |
130 | ||
e04ab74d | 131 | #define thread_add_read(m,f,a,v) funcname_thread_add_read(m,f,a,v,#f) |
132 | #define thread_add_write(m,f,a,v) funcname_thread_add_write(m,f,a,v,#f) | |
133 | #define thread_add_timer(m,f,a,v) funcname_thread_add_timer(m,f,a,v,#f) | |
9e867fe6 | 134 | #define thread_add_timer_msec(m,f,a,v) funcname_thread_add_timer_msec(m,f,a,v,#f) |
e04ab74d | 135 | #define thread_add_event(m,f,a,v) funcname_thread_add_event(m,f,a,v,#f) |
136 | #define thread_execute(m,f,a,v) funcname_thread_execute(m,f,a,v,#f) | |
137 | ||
718e3744 | 138 | /* Prototypes. */ |
139 | struct thread_master *thread_master_create (); | |
e04ab74d | 140 | struct thread *funcname_thread_add_read (struct thread_master *, |
141 | int (*)(struct thread *), void *, int, char*); | |
142 | struct thread *funcname_thread_add_write (struct thread_master *, | |
143 | int (*)(struct thread *), void *, int, char*); | |
144 | struct thread *funcname_thread_add_timer (struct thread_master *, | |
145 | int (*)(struct thread *), void *, long, char*); | |
9e867fe6 | 146 | struct thread *funcname_thread_add_timer_msec (struct thread_master *, |
147 | int (*)(struct thread *), void *, long, char*); | |
e04ab74d | 148 | struct thread *funcname_thread_add_event (struct thread_master *, |
149 | int (*)(struct thread *), void *, int, char*); | |
718e3744 | 150 | void thread_cancel (struct thread *); |
151 | void thread_cancel_event (struct thread_master *, void *); | |
152 | ||
153 | struct thread *thread_fetch (struct thread_master *, struct thread *); | |
e04ab74d | 154 | struct thread *funcname_thread_execute (struct thread_master *, |
155 | int (*)(struct thread *), void *, int, char *); | |
718e3744 | 156 | void thread_call (struct thread *); |
157 | unsigned long thread_timer_remain_second (struct thread *); | |
158 | ||
e04ab74d | 159 | extern struct cmd_element show_thread_cpu_cmd; |
160 | ||
718e3744 | 161 | #endif /* _ZEBRA_THREAD_H */ |