Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
2 | pj | 1 | /* |
2 | * Project: S.Ha.R.K. |
||
3 | * |
||
4 | * Coordinators: |
||
5 | * Giorgio Buttazzo <giorgio@sssup.it> |
||
6 | * Paolo Gai <pj@gandalf.sssup.it> |
||
7 | * |
||
8 | * Authors : |
||
9 | * Paolo Gai <pj@gandalf.sssup.it> |
||
10 | * (see the web pages for full authors list) |
||
11 | * |
||
12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
13 | * |
||
14 | * http://www.sssup.it |
||
15 | * http://retis.sssup.it |
||
16 | * http://shark.sssup.it |
||
17 | */ |
||
18 | |||
19 | /** |
||
20 | ------------ |
||
21 | CVS : $Id: jet.c,v 1.1.1.1 2002-03-29 14:12:51 pj Exp $ |
||
22 | |||
23 | File: $File$ |
||
24 | Revision: $Revision: 1.1.1.1 $ |
||
25 | Last update: $Date: 2002-03-29 14:12:51 $ |
||
26 | ------------ |
||
27 | |||
28 | Kernel Job Execution Time functions |
||
29 | |||
30 | This file contains: |
||
31 | |||
32 | jet_delstat |
||
33 | jet_getstat |
||
34 | jet_gettable |
||
35 | jet_update_endcycle |
||
36 | jet_update_slice |
||
37 | |||
38 | **/ |
||
39 | |||
40 | /* |
||
41 | * Copyright (C) 2000 Paolo Gai |
||
42 | * |
||
43 | * This program is free software; you can redistribute it and/or modify |
||
44 | * it under the terms of the GNU General Public License as published by |
||
45 | * the Free Software Foundation; either version 2 of the License, or |
||
46 | * (at your option) any later version. |
||
47 | * |
||
48 | * This program is distributed in the hope that it will be useful, |
||
49 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
50 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
51 | * GNU General Public License for more details. |
||
52 | * |
||
53 | * You should have received a copy of the GNU General Public License |
||
54 | * along with this program; if not, write to the Free Software |
||
55 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
56 | * |
||
57 | */ |
||
58 | |||
59 | #include <stdarg.h> |
||
60 | #include <ll/ll.h> |
||
61 | #include <ll/stdlib.h> |
||
62 | #include <ll/stdio.h> |
||
63 | #include <ll/string.h> |
||
64 | #include <kernel/config.h> |
||
65 | #include <kernel/model.h> |
||
66 | #include <kernel/const.h> |
||
67 | #include <sys/types.h> |
||
68 | #include <kernel/types.h> |
||
69 | #include <kernel/descr.h> |
||
70 | #include <errno.h> |
||
71 | #include <kernel/var.h> |
||
72 | #include <kernel/func.h> |
||
73 | |||
74 | /*---------------------------------------------------------------------*/ |
||
75 | /* Jet management primitives */ |
||
76 | /*---------------------------------------------------------------------*/ |
||
77 | |||
78 | /*+ This primitive returns the maximum execution time and the total |
||
79 | execution time from the task_create or the last jet_delstat |
||
80 | It returns also the number of instances to use to calculate the mean |
||
81 | time and the current job execution time. |
||
82 | The value returned is 0 if all ok, -1 if the PID is not correct or |
||
83 | the task doesn't have the JET_ENABLE bit set. |
||
84 | +*/ |
||
85 | int jet_getstat(PID p, TIME *sum, TIME *max, int *n, TIME *curr) |
||
86 | { |
||
87 | kern_cli(); |
||
88 | |||
89 | if (p<0 || p>=MAX_PROC || |
||
90 | !(proc_table[p].control & JET_ENABLED) || |
||
91 | proc_table[p].status == FREE) { |
||
92 | kern_sti(); |
||
93 | return -1; |
||
94 | } |
||
95 | |||
96 | if (sum != NULL) *sum = proc_table[p].jet_sum; |
||
97 | if (max != NULL) *max = proc_table[p].jet_max; |
||
98 | if (n != NULL) *n = proc_table[p].jet_n; |
||
99 | if (curr != NULL) *curr= proc_table[p].jet_table[proc_table[p].jet_curr]; |
||
100 | |||
101 | kern_sti(); |
||
102 | return 0; |
||
103 | } |
||
104 | |||
105 | /*+ This primitive reset to 0 the maximum execution time and the mean |
||
106 | execution time of the task p, and reset to 0 all the entries in |
||
107 | jet_table. |
||
108 | The value returned is 0 if all ok, -1 if the PID is not correct or |
||
109 | the task doesn't have the JET_ENABLE bit set. +*/ |
||
110 | int jet_delstat(PID p) |
||
111 | { |
||
112 | kern_cli(); |
||
113 | |||
114 | if (p<0 || p>=MAX_PROC || |
||
115 | !(proc_table[p].control & JET_ENABLED) || |
||
116 | proc_table[p].status == FREE) { |
||
117 | kern_sti(); |
||
118 | return -1; |
||
119 | } |
||
120 | |||
121 | proc_table[p].jet_sum = 0; |
||
122 | proc_table[p].jet_n = 0; |
||
123 | proc_table[p].jet_max = 0; |
||
124 | |||
125 | kern_sti(); |
||
126 | return 0; |
||
127 | } |
||
128 | |||
129 | |||
130 | /*+ This primitive returns the last n values of the task execution time |
||
131 | recorded after the last call to jet_gettable or jet_delstat. |
||
132 | If n is |
||
133 | <0 it will be set only the last values inserted in the table |
||
134 | since the last call of jet_gettable. |
||
135 | >0 it will be set up to JET_TABLE_DIM datas. |
||
136 | |||
137 | The value returned is -1 if the PID is not correct or |
||
138 | the task doesn't have the JET_ENABLE bit set, otherwise it returns the |
||
139 | number of values set in the parameter table. |
||
140 | (can be from 0 to JET_TABLE_DIM-1) |
||
141 | +*/ |
||
142 | int jet_gettable(PID p, TIME *table, int n) |
||
143 | { |
||
144 | int i; |
||
145 | |||
146 | kern_cli(); |
||
147 | |||
148 | if (p<0 || p>=MAX_PROC || |
||
149 | !(proc_table[p].control & JET_ENABLED) || |
||
150 | proc_table[p].status == FREE) { |
||
151 | kern_sti(); |
||
152 | return -1; |
||
153 | } |
||
154 | |||
155 | /* Copy all the info to the user */ |
||
156 | if (n < 0) { |
||
157 | n = proc_table[p].jet_tvalid; |
||
158 | proc_table[p].jet_tvalid = 0; |
||
159 | } |
||
160 | else if (n > JET_TABLE_DIM-1) |
||
161 | n = JET_TABLE_DIM-1; |
||
162 | |||
163 | for (i=(proc_table[p].jet_curr + JET_TABLE_DIM - n) % JET_TABLE_DIM; |
||
164 | i!= proc_table[p].jet_curr; |
||
165 | i= (i+1) % JET_TABLE_DIM) |
||
166 | *table++ = proc_table[p].jet_table[i]; |
||
167 | |||
168 | kern_sti(); |
||
169 | return n; |
||
170 | } |
||
171 | |||
172 | /*+ This function updates the jet information. +*/ |
||
173 | void jet_update_slice(TIME t) |
||
174 | { |
||
175 | if (proc_table[exec_shadow].control & JET_ENABLED) |
||
176 | proc_table[exec_shadow].jet_table[ proc_table[exec_shadow].jet_curr ] |
||
177 | += t; |
||
178 | |||
179 | |||
180 | if (TIMESPEC_A_LT_B(&schedule_time, &cap_lasttime)) { |
||
181 | kern_printf("scheduletime %lus %luns * caplasttime %lus %luns * exec=%d TIME = %lu \n", |
||
182 | schedule_time.tv_sec,schedule_time.tv_nsec, |
||
183 | cap_lasttime.tv_sec,cap_lasttime.tv_nsec, exec_shadow, t); |
||
184 | sys_end(); |
||
185 | } |
||
186 | } |
||
187 | |||
188 | /*+ This function updates the jet information at the task end period |
||
189 | it is called in task_endcycle and task_sleep +*/ |
||
190 | void jet_update_endcycle() |
||
191 | { |
||
192 | int s,n; |
||
193 | |||
194 | if (proc_table[exec_shadow].control & JET_ENABLED) { |
||
195 | s = proc_table[exec_shadow].jet_table[proc_table[exec_shadow].jet_curr]; |
||
196 | n = proc_table[exec_shadow].jet_n; |
||
197 | |||
198 | if (proc_table[exec_shadow].jet_max < s) |
||
199 | proc_table[exec_shadow].jet_max = s; |
||
200 | |||
201 | proc_table[exec_shadow].jet_sum += s; |
||
202 | |||
203 | proc_table[exec_shadow].jet_n = n+1; |
||
204 | |||
205 | proc_table[exec_shadow].jet_curr = (proc_table[exec_shadow].jet_curr + 1) |
||
206 | % JET_TABLE_DIM; |
||
207 | proc_table[exec_shadow].jet_table[proc_table[exec_shadow].jet_curr] = 0; |
||
208 | |||
209 | /* we update the tvalid field... */ |
||
210 | if (proc_table[exec_shadow].jet_tvalid < JET_TABLE_DIM) |
||
211 | proc_table[exec_shadow].jet_tvalid++; |
||
212 | } |
||
213 | } |
||
214 | |||
215 |