1 /************************************************************************ 2 Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are 6 met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above 10 copyright notice, this list of conditions and the following 11 disclaimer in the documentation and/or other materials provided 12 with the distribution. 13 * Neither the name of The Linux Foundation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 ************************************************************************/ 29 30 /** 31 * @file datatop.c 32 * @brief Executes commands for application. 33 * 34 * Contains the main() function where program executes. Calls appropriate 35 * methods based on user's CLI commands. Executes parsing function to 36 * determine necessary output and handles errors which may arise during the 37 * parse. Initiliazes files for data collection. Will call functions designed 38 * to poll and print the data in understandable format. 39 */ 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <sys/time.h> 44 #include <sys/resource.h> 45 #include <unistd.h> 46 #include <string.h> 47 #include <errno.h> 48 #include <time.h> 49 #include "datatop_interface.h" 50 #include "datatop_linked_list.h" 51 #include "datatop_opt.h" 52 #include "datatop_fileops.h" 53 #include "datatop_polling.h" 54 #include "datatop_gen_poll.h" 55 56 struct dtop_linked_list *first_dpg_list; 57 struct cli_opts usr_cl_opts; 58 59 /** 60 * @brief Prints the datapoint names and values to the terminal. 61 * 62 * @param dpg_list A pointer to the first node of a linked list which 63 * contains all data_point_gatherer structs to print. 64 */ 65 void dtop_print_terminal(struct dtop_linked_list *dpg_list) 66 { 67 struct dtop_linked_list *curr_ptr = dpg_list; 68 struct dtop_data_point_gatherer *dpset; 69 70 while (curr_ptr) { 71 dpset = (struct dtop_data_point_gatherer *) curr_ptr->data; 72 dtop_print_dpg(dpset); 73 curr_ptr = curr_ptr->next_ptr; 74 } 75 } 76 77 /** 78 * @brief Polls the data periodically and prints to file specified by the user. 79 * 80 * Polls the data as often as specified by the user in their CLI arguments 81 * and outputs the data to a file also specified in CLI arguments. Then prints 82 * a snapshot of delta(dp_value) to the terminal. 83 * 84 * @param dpg_list A pointer to the first node of a linked list which contains 85 * all data_point_gatherer structs to poll and print. 86 * @param fw A pointer to the file which will be printed to. 87 * @return FILE_ERROR - Writing to file was unsuccessful. 88 * @return FILE_SUCCESS - Writing to file was successful. 89 */ 90 int dtop_poll_periodically(struct dtop_linked_list *dpg_list, FILE *fw) 91 { 92 struct timeval tv, timeout; 93 fd_set rfds; 94 time_t curtime, endtime; 95 int inp, quit = 0; 96 struct dtop_linked_list *curr_ptr = dpg_list; 97 struct dtop_data_point_gatherer *dpset; 98 struct timeval ftime, itime, polltime; 99 100 gettimeofday(&tv, NULL); 101 curtime = tv.tv_sec; 102 endtime = tv.tv_sec + usr_cl_opts.poll_time; 103 104 /* print all of our datapoint names as column headers in csv format */ 105 if (fprintf(fw, "\"Time\",") < 0) 106 return FILE_ERROR; 107 108 while (curr_ptr) { 109 dpset = (struct dtop_data_point_gatherer *) curr_ptr->data; 110 if (dtop_print_dpg_names_csv(dpset, fw) == FILE_ERROR) 111 return FILE_ERROR; 112 curr_ptr = curr_ptr->next_ptr; 113 } 114 if (fprintf(fw, "\n") < 0) 115 return FILE_ERROR; 116 117 dtop_print_interactive_opts(); 118 gettimeofday(&itime, NULL); 119 /* periodically poll the datapoints and print in csv format */ 120 while (curtime < endtime 121 || usr_cl_opts.poll_time == POLL_NOT_SPECIFIED) { 122 FD_ZERO(&rfds); 123 FD_SET(0, &rfds); 124 timeout.tv_sec = usr_cl_opts.poll_per; 125 timeout.tv_usec = 0; 126 //ftime is right before timeout calculations for most acurate calculations 127 gettimeofday(&ftime, NULL); 128 timersub(&ftime, &itime, &polltime); 129 timersub(&timeout,&polltime, &timeout); 130 inp = select(1, &rfds, NULL, NULL, &timeout); 131 gettimeofday(&itime, NULL); 132 if (inp) { 133 char s[4]; 134 scanf("%s", s); 135 if (strcmp(s, "quit") == 0 136 || strcmp(s, "q") == 0) { 137 quit = QUIT; 138 break; 139 } 140 if (strcmp(s, "i") == 0) { 141 dtop_print_snapshot_diff(first_dpg_list); 142 dtop_reset_dp_initial_values(first_dpg_list); 143 } 144 if (strcmp(s, "l") == 0) 145 dtop_print_snapshot_diff(first_dpg_list); 146 } 147 gettimeofday(&tv, NULL); 148 curtime = tv.tv_sec; 149 dtop_poll(dpg_list); 150 printf("Polled at %ld.%06ld\n", tv.tv_sec, tv.tv_usec); 151 if (dtop_print_time_at_poll(fw) == FILE_ERROR) 152 return FILE_ERROR; 153 if (dtop_write_pollingdata_csv(dpg_list, fw) == FILE_ERROR) 154 return FILE_ERROR; 155 } 156 157 if (quit != QUIT) 158 dtop_print_snapshot_diff(dpg_list); 159 return FILE_SUCCESS; 160 } 161 162 static void dtop_set_niceness(int niceness) 163 { 164 int pid, rc; 165 pid = getpid(); 166 printf("Requesting nice %d\n", niceness); 167 rc = setpriority(PRIO_PROCESS, pid, niceness); 168 if (rc != 0) 169 fprintf(stderr, "Error setting priority [%d]\n", errno); 170 171 rc = getpriority(PRIO_PROCESS, pid); 172 printf("Running with nice %d.\n", rc); 173 } 174 175 int main(int argc, char **argv) 176 { 177 int parse_status; 178 printf("DataTop - Version %s\n", VERSION); 179 printf("(c)2014-2015 Linux Foundation\n"); 180 181 dtop_load_default_options(&usr_cl_opts); 182 183 parse_status = dtop_parse_cli_opts(&usr_cl_opts, argc, argv); 184 switch (parse_status) { 185 case PARSE_SUCCESS: 186 dtop_set_niceness(usr_cl_opts.priority); 187 break; 188 189 case PARSE_FORCE_EXIT: 190 exit(EXIT_SUCCESS); 191 break; 192 193 case PARSE_FAILURE: 194 default: 195 printf("Failed to parse command line arguments.\n"); 196 exit(EXIT_FAILURE); 197 break; 198 } 199 200 dtop_dual_line_init("/proc/net/netstat"); 201 dtop_dual_line_init("/proc/net/snmp"); 202 dtop_single_line_init("/proc/net/snmp6"); 203 dtop_gen_init("/proc/sys/net/"); 204 dtop_gen_init("/sys/module/rmnet_data/parameters/"); 205 dtop_gen_init("/sys/class/net/rmnet_mhi0/statistics/"); 206 dtop_gen_init("/sys/class/net/usb_rmnet0/statistics/"); 207 dtop_gen_init("/sys/class/net/rmnet_ipa0/statistics/"); 208 dtop_meminfo_init(); 209 dtop_dev_init(); 210 dtop_stat_init(); 211 dtop_cpu_stats_init(); 212 dtop_gen_init("/sys/kernel/debug/clk/bimc_clk/"); 213 dtop_gen_init("/sys/kernel/debug/clk/snoc_clk/"); 214 dtop_gen_init("/sys/kernel/debug/clk/pnoc_clk/"); 215 216 if (usr_cl_opts.print_cl == OPT_CHOSE) { 217 dtop_poll(first_dpg_list); 218 dtop_print_terminal(first_dpg_list); 219 } 220 221 if (usr_cl_opts.print_csv == OPT_CHOSE) { 222 FILE *to_file = NULL; 223 if ((dtop_open_writing_file(usr_cl_opts.file_name, 224 &to_file)) == VALID) { 225 printf("\nData being polled for %ld seconds.\n", 226 usr_cl_opts.poll_time); 227 if (dtop_poll_periodically(first_dpg_list, to_file) 228 == FILE_ERROR) { 229 fprintf(stderr, "err=%d: %s\n", errno, 230 strerror(errno)); 231 dtop_close_file(to_file); 232 deconstruct_dpgs(first_dpg_list); 233 dtop_rem_linked_list(first_dpg_list); 234 exit(EXIT_FAILURE); 235 } 236 dtop_close_file(to_file); 237 } else { 238 printf("File Can Not Be Opened\n"); 239 exit(EXIT_FAILURE); 240 } 241 } 242 243 if (usr_cl_opts.snapshot_file) { 244 if (dtop_print_system_snapshot(usr_cl_opts.snapshot_file) 245 == FILE_ERROR) { 246 fprintf(stderr, "err=%d: %s\n", errno, 247 strerror(errno)); 248 deconstruct_dpgs(first_dpg_list); 249 dtop_rem_linked_list(first_dpg_list); 250 exit(EXIT_FAILURE); 251 } 252 } 253 254 if (usr_cl_opts.print_cl == OPT_NOT_CHOSE && 255 usr_cl_opts.print_csv == OPT_NOT_CHOSE) { 256 if ((!usr_cl_opts.snapshot_file) 257 || usr_cl_opts.poll_time_selected == POLL_TIME_SELECTED) { 258 printf("\nData will now be polled for %ld seconds.\n", 259 usr_cl_opts.poll_time); 260 dtop_poll(first_dpg_list); 261 sleep(usr_cl_opts.poll_time); 262 dtop_poll(first_dpg_list); 263 dtop_print_snapshot_diff(first_dpg_list); 264 } 265 } 266 267 deconstruct_dpgs(first_dpg_list); 268 dtop_rem_linked_list(first_dpg_list); 269 return 0; 270 } 271 272 /** 273 * @brief Adds each dpg as a node to a linked list. 274 * 275 * Called when a dpg is initialized. 276 * 277 * @param dpg A pointer to a data_point_gatherer struct which is to be added to the linked list. 278 */ 279 void dtop_register(struct dtop_data_point_gatherer *dpg) 280 { 281 if (dpg) 282 first_dpg_list = dtop_add_linked_list(dpg, first_dpg_list); 283 } 284
