1 /* 2 * Copyright 2009, Intel Corporation 3 * Copyright 2009, Sun Microsystems, Inc 4 * 5 * This file is part of PowerTOP 6 * 7 * This program file is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; version 2 of the License. 10 * 11 * This program is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program in a file named COPYING; if not, write to the 18 * Free Software Foundation, Inc., 19 * 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301 USA 21 * 22 * Authors: 23 * Arjan van de Ven <arjan@linux.intel.com> 24 * Eric C Saxe <eric.saxe@sun.com> 25 * Aubrey Li <aubrey.li@intel.com> 26 */ 27 28 /* 29 * GPL Disclaimer 30 * 31 * For the avoidance of doubt, except that if any license choice other 32 * than GPL or LGPL is available it will apply instead, Sun elects to 33 * use only the General Public License version 2 (GPLv2) at this time 34 * for any software where a choice of GPL license versions is made 35 * available with the language indicating that GPLv2 or any later 36 * version may be used, or where a choice of which version of the GPL 37 * is applied is otherwise unspecified. 38 */ 39 40 #include <unistd.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include "powertop.h" 45 46 struct suggestion; 47 48 struct suggestion { 49 struct suggestion *next; 50 51 char *string; 52 int weight; 53 char key; 54 char *keystring; 55 56 suggestion_func *func; 57 }; 58 59 static struct suggestion *suggestions; 60 static int total_weight; 61 62 static char previous[1024]; 63 64 void 65 reset_suggestions(void) 66 { 67 struct suggestion *ptr; 68 69 ptr = suggestions; 70 71 while (ptr) { 72 struct suggestion *next; 73 74 next = ptr->next; 75 free(ptr->string); 76 free(ptr->keystring); 77 free(ptr); 78 ptr = next; 79 } 80 81 suggestions = NULL; 82 (void) strcpy(g_status_bar_slots[8], ""); 83 84 g_suggestion_key = -1; 85 g_suggestion_activate = NULL; 86 total_weight = 0; 87 } 88 89 void 90 add_suggestion(char *text, int weight, char key, char *keystring, 91 suggestion_func *func) 92 { 93 struct suggestion *new; 94 95 if (!text) 96 return; 97 98 new = malloc(sizeof (struct suggestion)); 99 100 if (!new) 101 return; 102 103 (void) memset(new, 0, sizeof (struct suggestion)); 104 105 new->string = strdup(text); 106 new->weight = weight; 107 new->key = key; 108 109 if (keystring) 110 new->keystring = strdup(keystring); 111 112 new->next = suggestions; 113 new->func = func; 114 suggestions = new; 115 total_weight += weight; 116 } 117 118 void 119 pick_suggestion(void) 120 { 121 int weight, value, running = 0; 122 struct suggestion *ptr; 123 124 (void) strcpy(g_status_bar_slots[8], ""); 125 g_suggestion_key = -1; 126 g_suggestion_activate = NULL; 127 128 if (total_weight == 0 || suggestions == NULL) { 129 show_suggestion(""); 130 return; 131 } 132 133 weight = total_weight; 134 135 if (strlen(previous) && g_displaytime > 0.0) 136 weight += 50; 137 138 value = rand() % weight; 139 ptr = suggestions; 140 141 while (ptr) { 142 running += ptr->weight; 143 144 if (strcmp(ptr->string, previous) == 0 && g_displaytime > 0.0) 145 running += 50; 146 147 if (running > value) { 148 if (ptr->keystring) 149 (void) strncpy(g_status_bar_slots[8], 150 ptr->keystring, PTOP_BAR_LENGTH); 151 152 g_suggestion_key = ptr->key; 153 g_suggestion_activate = ptr->func; 154 155 show_suggestion(ptr->string); 156 157 if (strcmp(ptr->string, previous)) { 158 g_displaytime = 30.0; 159 (void) strcpy(previous, ptr->string); 160 } 161 return; 162 } 163 ptr = ptr->next; 164 } 165 166 show_suggestion(""); 167 (void) memset(previous, 0, sizeof (previous)); 168 g_displaytime = -1.0; 169 } 170 171 void 172 print_all_suggestions(void) 173 { 174 struct suggestion *ptr; 175 176 for (ptr = suggestions; ptr; ptr = ptr->next) 177 (void) printf("\n%s\n", ptr->string); 178 } 179