src/cursesdisplay.c

   1 /*
   2  * Copyright (C) 2011 Julien Desfossez
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <signal.h>
  21 #include <string.h>
  22 #include <ncurses.h>
  23 #include <panel.h>
  24 #include <pthread.h>
  25 #include <semaphore.h>
  26
  27 #include "cursesdisplay.h"
  28 #include "lttngtoptypes.h"
  29 #include "iostreamtop.h"
  30 #include "common.h"
  31
  32 #define DEFAULT_DELAY 15
  33 #define MAX_LINE_LENGTH 50
  34 #define MAX_LOG_LINES 4
  35
  36 /* to prevent concurrent updates of the different windows */
  37 sem_t update_display_sem;
  38
  39 char *termtype;
  40 WINDOW *footer, *header, *center, *status;
  41 WINDOW *perf_panel_window = NULL;
  42 PANEL *perf_panel, *main_panel;
  43
  44 int perf_panel_visible = 0;
  45 int perf_line_selected = 0;
  46
  47 int last_display_index, currently_displayed_index;
  48
  49 struct processtop *selected_process = NULL;
  50 int selected_tid;
  51 char *selected_comm;
  52 int selected_ret;
  53
  54 int selected_line = 0; /* select bar position */
  55 int selected_in_list = 0; /* selection relative to the whole list */
  56 int list_offset = 0; /* first index in the list to display (scroll) */
  57 int nb_log_lines = 0;
  58 char log_lines[MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES];
  59
  60 int max_elements = 80;
  61
  62 int toggle_threads = -1;
  63 int toggle_pause = -1;
  64 int toggle_tree = -1;
  65
  66 int max_center_lines;
  67
  68 pthread_t keyboard_thread;
  69
  70 void reset_ncurses()
  71 {
  72         curs_set(1);
  73         endwin();
  74         exit(0);
  75 }
  76
  77 static void handle_sigterm(int signal)
  78 {
  79         reset_ncurses();
  80 }
  81
  82 void init_screen()
  83 {
  84         initscr();
  85         noecho();
  86         halfdelay(DEFAULT_DELAY);
  87         nonl();
  88         intrflush(stdscr, false);
  89         keypad(stdscr, true);
  90         curs_set(0);
  91
  92         if (has_colors()) {
  93                 start_color();
  94                 init_pair(1, COLOR_RED, COLOR_BLACK); /* - */
  95                 init_pair(2, COLOR_GREEN, COLOR_BLACK); /* + */
  96                 init_pair(3, COLOR_BLACK, COLOR_WHITE); /* keys */
  97                 init_pair(4, COLOR_WHITE, COLOR_GREEN); /* keys activated */
  98                 init_pair(5, COLOR_WHITE, COLOR_BLUE); /* select line */
  99         }
 100         termtype = getenv("TERM");
 101         if (!strcmp(termtype, "xterm") ||  !strcmp(termtype, "xterm-color") ||
 102                         !strcmp(termtype, "vt220")) {
 103                 define_key("\033[H", KEY_HOME);
 104                 define_key("\033[F", KEY_END);
 105                 define_key("\033OP", KEY_F(1));
 106                 define_key("\033OQ", KEY_F(2));
 107                 define_key("\033OR", KEY_F(3));
 108                 define_key("\033OS", KEY_F(4));
 109                 define_key("\0330U", KEY_F(6));
 110                 define_key("\033[11~", KEY_F(1));
 111                 define_key("\033[12~", KEY_F(2));
 112                 define_key("\033[13~", KEY_F(3));
 113                 define_key("\033[14~", KEY_F(4));
 114                 define_key("\033[16~", KEY_F(6));
 115                 define_key("\033[17;2~", KEY_F(18));
 116         }
 117         signal(SIGTERM, handle_sigterm);
 118         mousemask(BUTTON1_CLICKED, NULL);
 119         refresh();
 120 }
 121
 122 WINDOW *create_window(int height, int width, int startx, int starty)
 123 {
 124         WINDOW *win;
 125         win = newwin(height, width, startx, starty);
 126         box(win, 0 , 0);
 127         wrefresh(win);
 128         return win;
 129 }
 130
 131 WINDOW *create_window_no_border(int height, int width, int startx, int starty)
 132 {
 133         WINDOW *win;
 134         win = newwin(height, width, startx, starty);
 135         wrefresh(win);
 136         return win;
 137 }
 138
 139 void print_digit(WINDOW *win, int digit)
 140 {
 141         if (digit < 0) {
 142                 wattron(win, COLOR_PAIR(1));
 143                 wprintw(win, "%d", digit);
 144                 wattroff(win, COLOR_PAIR(1));
 145         } else if (digit > 0) {
 146                 wattron(win, COLOR_PAIR(2));
 147                 wprintw(win, "+%d", digit);
 148                 wattroff(win, COLOR_PAIR(2));
 149         } else {
 150                 wprintw(win, "0");
 151         }
 152 }
 153
 154 void print_digits(WINDOW *win, int first, int second)
 155 {
 156         wprintw(win, "(");
 157         print_digit(win, first);
 158         wprintw(win, ", ");
 159         print_digit(win, second);
 160         wprintw(win, ")");
 161 }
 162
 163 void print_headers(int line, char *desc, int value, int first, int second)
 164 {
 165         wattron(header, A_BOLD);
 166         mvwprintw(header, line, 4, "%s", desc);
 167         wattroff(header, A_BOLD);
 168         mvwprintw(header, line, 16, "N/A", value);
 169         wmove(header, line, 24);
 170         print_digits(header, first, second);
 171         wmove(header, line, 40);
 172 }
 173
 174 void set_window_title(WINDOW *win, char *title)
 175 {
 176         wattron(win, A_BOLD);
 177         mvwprintw(win, 0, 1, title);
 178         wattroff(win, A_BOLD);
 179 }
 180
 181 void print_log(char *str)
 182 {
 183         int i;
 184         int current_line = 1;
 185         int current_char = 1;
 186         char *tmp, *tmp2;
 187         /* rotate the line buffer */
 188         if (nb_log_lines >= MAX_LOG_LINES) {
 189                 tmp = strndup(log_lines, MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES);
 190                 tmp2 = strchr(tmp, '\n');
 191                 memset(log_lines, '\0', strlen(log_lines));
 192                 strncat(log_lines, tmp2 + 1, strlen(tmp2) - 1);
 193                 log_lines[strlen(log_lines)] = '\n';
 194                 log_lines[strlen(log_lines)] = '\0';
 195                 free(tmp);
 196         }
 197         nb_log_lines++;
 198
 199         strncat(log_lines, str, MAX_LINE_LENGTH - 1);
 200
 201         if (nb_log_lines < MAX_LOG_LINES)
 202                 log_lines[strlen(log_lines)] = '\n';
 203         log_lines[strlen(log_lines)] = '\0';
 204
 205         werase(status);
 206         box(status, 0 , 0);
 207         set_window_title(status, "Status");
 208         for (i = 0; i < strlen(log_lines); i++) {
 209                 if (log_lines[i] == '\n') {
 210                         wmove(status, ++current_line, 1);
 211                         current_char = 1;
 212                 } else {
 213                         mvwprintw(status, current_line, current_char++, "%c",
 214                                         log_lines[i]);
 215                 }
 216         }
 217         wrefresh(status);
 218 }
 219
 220 void print_key(WINDOW *win, char *key, char *desc, int toggle)
 221 {
 222         int pair;
 223         if (toggle > 0)
 224                 pair = 4;
 225         else
 226                 pair = 3;
 227         wattron(win, COLOR_PAIR(pair));
 228         wprintw(footer, "%s", key);
 229         wattroff(win, COLOR_PAIR(pair));
 230         wprintw(footer, ":%s", desc);
 231 }
 232
 233 void update_footer()
 234 {
 235         sem_wait(&update_display_sem);
 236         werase(footer);
 237         wmove(footer, 1, 1);
 238         print_key(footer, "F2", "CPUtop  ", current_view == cpu);
 239         print_key(footer, "F3", "PerfTop  ", current_view == perf);
 240         print_key(footer, "F6", "IOTop  ", current_view == iostream);
 241         print_key(footer, "Enter", "Details  ", current_view == process_details);
 242         print_key(footer, "q", "Quit | ", 0);
 243         print_key(footer, "P", "Perf Pref  ", 0);
 244         print_key(footer, "p", "Pause  ", toggle_pause);
 245
 246         wrefresh(footer);
 247         sem_post(&update_display_sem);
 248 }
 249
 250 void basic_header()
 251 {
 252         werase(header);
 253         box(header, 0 , 0);
 254         set_window_title(header, "Statistics for interval [gathering data...[");
 255         wattron(header, A_BOLD);
 256         mvwprintw(header, 1, 4, "CPUs");
 257         mvwprintw(header, 2, 4, "Processes");
 258         mvwprintw(header, 3, 4, "Threads");
 259         mvwprintw(header, 4, 4, "Files");
 260         mvwprintw(header, 5, 4, "Network");
 261         mvwprintw(header, 6, 4, "IO");
 262         wattroff(header, A_BOLD);
 263         wrefresh(header);
 264 }
 265
 266 void update_header()
 267 {
 268         werase(header);
 269         box(header, 0 , 0);
 270         set_window_title(header, "Statistics for interval ");
 271         wattron(header, A_BOLD);
 272         /*
 273         wprintw(header, "[%lu.%lu, %lu.%lu[",
 274                         data->start.tv_sec, data->start.tv_nsec,
 275                         data->end.tv_sec, data->end.tv_nsec);
 276                         */
 277         wprintw(header, "[%lu, %lu[",
 278             data->start,
 279             data->end);
 280         mvwprintw(header, 1, 4, "CPUs");
 281         wattroff(header, A_BOLD);
 282         wprintw(header, "\t%d\t(max/cpu : %0.2f%)", data->cpu_table->len,
 283                         100.0/data->cpu_table->len);
 284         print_headers(2, "Processes", data->nbproc, data->nbnewproc,
 285                         -1*(data->nbdeadproc));
 286         print_headers(3, "Threads", data->nbthreads, data->nbnewthreads,
 287                         -1*(data->nbdeadthreads));
 288         print_headers(4, "Files", data->nbfiles, data->nbnewfiles,
 289                         -1*(data->nbclosedfiles));
 290         mvwprintw(header, 4, 43, "N/A kbytes/sec");
 291         print_headers(5, "Network", 114, 0, 0);
 292         mvwprintw(header, 5, 43, "N/A Mbytes/sec");
 293         wrefresh(header);
 294 }
 295
 296 gint sort_by_cpu_desc(gconstpointer p1, gconstpointer p2)
 297 {
 298         struct processtop *n1 = *(struct processtop **)p1;
 299         struct processtop *n2 = *(struct processtop **)p2;
 300         unsigned long totaln1 = n1->totalcpunsec;
 301         unsigned long totaln2 = n2->totalcpunsec;
 302
 303         if (totaln1 < totaln2)
 304                 return 1;
 305         if (totaln1 == totaln2)
 306                 return 0;
 307         return -1;
 308 }
 309
 310 gint sort_by_cpu_group_by_threads_desc(gconstpointer p1, gconstpointer p2)
 311 {
 312         struct processtop *n1 = *(struct processtop **)p1;
 313         struct processtop *n2 = *(struct processtop **)p2;
 314         unsigned long totaln1 = n1->threadstotalcpunsec;
 315         unsigned long totaln2 = n2->threadstotalcpunsec;
 316
 317         if (totaln1 < totaln2)
 318                 return 1;
 319         if (totaln1 == totaln2)
 320                 return 0;
 321         return -1;
 322 }
 323
 324 void update_cputop_display()
 325 {
 326         int i;
 327         int header_offset = 2;
 328         struct processtop *tmp;
 329         unsigned long elapsed;
 330         double maxcputime;
 331         int nblinedisplayed = 0;
 332         int current_line = 0;
 333
 334         elapsed = data->end - data->start;
 335         maxcputime = elapsed * data->cpu_table->len / 100.0;
 336
 337         g_ptr_array_sort(data->process_table, sort_by_cpu_desc);
 338
 339         set_window_title(center, "CPU Top");
 340         wattron(center, A_BOLD);
 341         mvwprintw(center, 1, 1, "CPU(%)");
 342         mvwprintw(center, 1, 12, "TGID");
 343         mvwprintw(center, 1, 22, "PID");
 344         mvwprintw(center, 1, 32, "NAME");
 345         wattroff(center, A_BOLD);
 346
 347         max_center_lines = LINES - 7 - 7 - 1 - header_offset;
 348
 349         /* iterate the process (thread) list */
 350         for (i = list_offset; i < data->process_table->len &&
 351                         nblinedisplayed < max_center_lines; i++) {
 352                 tmp = g_ptr_array_index(data->process_table, i);
 353
 354                 if (current_line == selected_line) {
 355                         selected_process = tmp;
 356                         selected_tid = tmp->tid;
 357                         selected_comm = tmp->comm;
 358                         wattron(center, COLOR_PAIR(5));
 359                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 360                 }
 361                 /* CPU(%) */
 362                 mvwprintw(center, current_line + header_offset, 1, "%1.2f",
 363                                 tmp->totalcpunsec / maxcputime);
 364                 /* TGID */
 365                 mvwprintw(center, current_line + header_offset, 12, "%d", tmp->pid);
 366                 /* PID */
 367                 mvwprintw(center, current_line + header_offset, 22, "%d", tmp->tid);
 368                 /* NAME */
 369                 mvwprintw(center, current_line + header_offset, 32, "%s", tmp->comm);
 370                 wattroff(center, COLOR_PAIR(5));
 371                 nblinedisplayed++;
 372                 current_line++;
 373         }
 374 }
 375
 376 gint sort_perf(gconstpointer p1, gconstpointer p2, gpointer key)
 377 {
 378         struct processtop *n1 = *(struct processtop **) p1;
 379         struct processtop *n2 = *(struct processtop **) p2;
 380
 381         struct perfcounter *tmp1, *tmp2;
 382         unsigned long totaln2 = 0;
 383         unsigned long totaln1 = 0;
 384
 385         if (!key)
 386                 return 0;
 387
 388         tmp1 = g_hash_table_lookup(n1->perf, key);
 389         if (!tmp1)
 390                 totaln1 = 0;
 391         else
 392                 totaln1 = tmp1->count;
 393
 394         tmp2 = g_hash_table_lookup(n2->perf, key);
 395         if (!tmp2)
 396                 totaln2 = 0;
 397         else
 398                 totaln2 = tmp2->count;
 399
 400         if (totaln1 < totaln2)
 401                 return 1;
 402         if (totaln1 == totaln2) {
 403                 totaln1 = n1->tid;
 404                 totaln2 = n2->tid;
 405                 if (totaln1 < totaln2)
 406                         return 1;
 407                 return -1;
 408         }
 409         return -1;
 410 }
 411
 412 void print_key_title(char *key, int line)
 413 {
 414         wattron(center, A_BOLD);
 415         mvwprintw(center, line, 1, "%s\t", key);
 416         wattroff(center, A_BOLD);
 417 }
 418
 419 void update_process_details()
 420 {
 421         unsigned long elapsed;
 422         double maxcputime;
 423         struct processtop *tmp = find_process_tid(data, selected_tid, selected_comm);
 424         struct files *file_tmp;
 425         struct file_history *history = tmp->files_history;
 426         int i, j = 0;
 427
 428         set_window_title(center, "Process details");
 429
 430
 431         elapsed = data->end - data->start;
 432         maxcputime = elapsed * data->cpu_table->len / 100.0;
 433
 434         print_key_title("Name", 1);
 435         wprintw(center, "%s", selected_comm);
 436         print_key_title("TID", 2);
 437         wprintw(center, "%d", selected_tid);
 438         if (!tmp) {
 439                 print_key_title("Does not exit at this time", 3);
 440                 return;
 441         }
 442
 443         print_key_title("PID", 3);
 444         wprintw(center, "%d", tmp->pid);
 445         print_key_title("PPID", 4);
 446         wprintw(center, "%d", tmp->ppid);
 447         print_key_title("CPU", 5);
 448         wprintw(center, "%1.2f %%", tmp->totalcpunsec/maxcputime);
 449
 450         print_key_title("READ B/s", 6);
 451         wprintw(center, "%d", tmp->fileread);
 452
 453         print_key_title("WRITE B/s", 7);
 454         wprintw(center, "%d", tmp->filewrite);
 455
 456         for (i = 0; i < tmp->process_files_table->len; i++) {
 457                 file_tmp = get_file(tmp, i);
 458                 if (file_tmp != NULL) {
 459                         print_key_title("file", 8+j);
 460                         wprintw(center, "%s fd = %d", file_tmp->name, i);
 461                         wprintw(center, " read = %d", file_tmp->read);
 462                         wprintw(center, " write = %d", file_tmp->write);
 463                         j++;
 464                 }
 465         }
 466 /*
 467         print_key_title("----------- Files History -----------",8+j);
 468         j = 0;
 469         while (history != NULL) {
 470                 file_tmp = history->file;
 471                 wprintw(center, "fd = %d\n", file_tmp->fd);//, file_tmp->fd);
 472                 history = history->next;
 473         }
 474 */
 475 }
 476
 477 void update_perf()
 478 {
 479         int i;
 480         int nblinedisplayed = 0;
 481         int current_line = 0;
 482         struct processtop *tmp;
 483         int header_offset = 2;
 484         int perf_row = 40;
 485         struct perfcounter *perfn1, *perfn2;
 486         char *perf_key = NULL;
 487         int value;
 488         GHashTableIter iter;
 489         gpointer key;
 490
 491         set_window_title(center, "Perf Top");
 492         wattron(center, A_BOLD);
 493         mvwprintw(center, 1, 1, "PID");
 494         mvwprintw(center, 1, 11, "TID");
 495         mvwprintw(center, 1, 22, "NAME");
 496
 497         perf_row = 40;
 498         g_hash_table_iter_init(&iter, data->perf_list);
 499         while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 500                 if (perfn1->visible) {
 501                         /* + 5 to strip the "perf_" prefix */
 502                         mvwprintw(center, 1, perf_row, "%s",
 503                                         (char *) key + 5);
 504                         perf_row += 20;
 505                 }
 506                 if (perfn1->sort) {
 507                         perf_key = (char *) key;
 508                 }
 509         }
 510
 511         wattroff(center, A_BOLD);
 512
 513         g_ptr_array_sort_with_data(data->process_table, sort_perf, perf_key);
 514
 515         for (i = 0; i < data->process_table->len &&
 516                         nblinedisplayed < max_center_lines; i++) {
 517                 tmp = g_ptr_array_index(data->process_table, i);
 518
 519                 if (current_line == selected_line) {
 520                         selected_process = tmp;
 521                         wattron(center, COLOR_PAIR(5));
 522                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 523                 }
 524
 525                 mvwprintw(center, current_line + header_offset, 1, "%d", tmp->pid);
 526                 mvwprintw(center, current_line + header_offset, 11, "%d", tmp->tid);
 527                 mvwprintw(center, current_line + header_offset, 22, "%s", tmp->comm);
 528
 529                 g_hash_table_iter_init(&iter, data->perf_list);
 530
 531                 perf_row = 40;
 532                 while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 533                         if (perfn1->visible) {
 534                                 perfn2 = g_hash_table_lookup(tmp->perf, (char *) key);
 535                                 if (perfn2)
 536                                         value = perfn2->count;
 537                                 else
 538                                         value = 0;
 539                                 mvwprintw(center, current_line + header_offset,
 540                                                 perf_row, "%d", value);
 541                                 perf_row += 20;
 542                         }
 543                 }
 544
 545                 wattroff(center, COLOR_PAIR(5));
 546                 nblinedisplayed++;
 547                 current_line++;
 548         }
 549 }
 550
 551 void update_fileio()
 552 {
 553         int i;
 554         int offset;
 555
 556         set_window_title(center, "IO Top");
 557         wattron(center, A_BOLD);
 558         mvwprintw(center, 1, 10, "READ");
 559         mvwprintw(center, 2, 1, "bytes");
 560         mvwprintw(center, 2, 15, "bytes/sec");
 561
 562         mvwprintw(center, 1, 39, "WRITE");
 563         mvwprintw(center, 2, 33, "bytes");
 564         mvwprintw(center, 2, 45, "bytes/sec");
 565
 566         if (toggle_threads > 0) {
 567                 mvwprintw(center, 1, 60, "TGID");
 568                 mvwprintw(center, 1, 70, "PID");
 569                 offset = 8;
 570         } else {
 571                 mvwprintw(center, 1, 60, "PID(TGID)");
 572                 offset = 0;
 573         }
 574         mvwprintw(center, 1, 72 + offset, "NAME");
 575         wattroff(center, A_BOLD);
 576
 577         for (i = 3; i < LINES - 3 - 8 - 1; i++) {
 578                 mvwprintw(center, i, 1, "%d", i*1000);
 579                 mvwprintw(center, i, 15, "%dk", i);
 580                 mvwprintw(center, i, 28, "|    %d", i*2000);
 581                 mvwprintw(center, i, 45, "%dk", i*2);
 582                 if (toggle_threads > 0) {
 583                         mvwprintw(center, i, 57, "|  %d", i);
 584                         mvwprintw(center, i, 70, "%d", i);
 585                 } else {
 586                         mvwprintw(center, i, 57, "|  %d", i);
 587                 }
 588                 mvwprintw(center, i, 72 + offset, "process_%d", i);
 589         }
 590 }
 591
 592 gint sort_by_ret_desc(gconstpointer p1, gconstpointer p2)
 593 {
 594         struct processtop *n1 = *(struct processtop **)p1;
 595         struct processtop *n2 = *(struct processtop **)p2;
 596
 597         unsigned long totaln1 = n1->totalfileread + n1->totalfilewrite;
 598         unsigned long totaln2 = n2->totalfileread + n2->totalfilewrite;
 599
 600         if (totaln1 < totaln2)
 601                 return 1;
 602         if (totaln1 == totaln2)
 603                 return 0;
 604         return -1;
 605 }
 606
 607 void update_iostream()
 608 {
 609         int i;
 610         int header_offset = 2;
 611         struct processtop *tmp;
 612         int nblinedisplayed = 0;
 613         int current_line = 0;
 614         int total = 0;
 615
 616         set_window_title(center, "IO Top");
 617         wattron(center, A_BOLD);
 618         mvwprintw(center, 1, 1, "READ (B/s)");
 619         mvwprintw(center, 1, 20, "WRITE (B/s)");
 620
 621         mvwprintw(center, 1, 40, "TOTAL STREAM");
 622
 623         mvwprintw(center, 1, 60, "TGID");
 624         mvwprintw(center, 1, 80, "PID");
 625
 626         mvwprintw(center, 1, 92, "NAME");
 627         wattroff(center, A_BOLD);
 628
 629         g_ptr_array_sort(data->process_table, sort_by_ret_desc);
 630
 631         for (i = list_offset; i < data->process_table->len &&
 632                         nblinedisplayed < max_center_lines; i++) {
 633                 tmp = g_ptr_array_index(data->process_table, i);
 634
 635                 if (current_line == selected_line) {
 636                         selected_process = tmp;
 637                         selected_tid = tmp->tid;
 638                         selected_comm = tmp->comm;
 639                         wattron(center, COLOR_PAIR(5));
 640                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 641                 }
 642
 643                 /* READ (bytes/sec) */
 644                 mvwprintw(center, current_line + header_offset, 1, "%lu",
 645                         tmp->fileread);
 646
 647                 /* WRITE (bytes/sec) */
 648                 mvwprintw(center, current_line + header_offset, 20, "%lu",
 649                         tmp->filewrite);
 650
 651                 /* TOTAL STREAM */
 652                 total = tmp->totalfileread + tmp->totalfilewrite;
 653
 654                 if (total >= 1000000)
 655                         mvwprintw(center, current_line + header_offset, 40, "%lu MB",
 656                                         total/1000000);
 657                 else if (total >= 1000)
 658                         mvwprintw(center, current_line + header_offset, 40, "%lu KB",
 659                                         total/1000);
 660                 else
 661                         mvwprintw(center, current_line + header_offset, 40, "%lu B",
 662                                         total);
 663
 664                 /* TGID */
 665                 mvwprintw(center, current_line + header_offset, 60, "%d", tmp->pid);
 666                 /* PID */
 667                 mvwprintw(center, current_line + header_offset, 80, "%d", tmp->tid);
 668                 /* NAME */
 669                 mvwprintw(center, current_line + header_offset, 92, "%s", tmp->comm);
 670                 wattroff(center, COLOR_PAIR(5));
 671                 nblinedisplayed++;
 672                 current_line++;
 673         }
 674 }
 675
 676 void update_current_view()
 677 {
 678         sem_wait(&update_display_sem);
 679         if (!data)
 680                 return;
 681         update_header();
 682
 683         werase(center);
 684         box(center, 0, 0);
 685         switch (current_view) {
 686         case cpu:
 687                 update_cputop_display();
 688                 break;
 689         case perf:
 690                 update_perf();
 691                 break;
 692         case process_details:
 693                 update_process_details();
 694                 break;
 695         case fileio:
 696                 update_fileio();
 697                 break;
 698         case iostream:
 699                 update_iostream();
 700                 break;
 701         case tree:
 702                 update_cputop_display();
 703                 break;
 704         default:
 705                 break;
 706         }
 707         update_panels();
 708         doupdate();
 709         sem_post(&update_display_sem);
 710 }
 711
 712 void setup_perf_panel()
 713 {
 714         int size;
 715         if (!data)
 716                 return;
 717         if (perf_panel_window) {
 718                 del_panel(perf_panel);
 719                 delwin(perf_panel_window);
 720         }
 721         size = g_hash_table_size(data->perf_list);
 722         perf_panel_window = create_window(size + 2, 30, 10, 10);
 723         perf_panel = new_panel(perf_panel_window);
 724         perf_panel_visible = 0;
 725         hide_panel(perf_panel);
 726 }
 727
 728 void update_perf_panel(int line_selected, int toggle_view, int toggle_sort)
 729 {
 730         int i;
 731         struct perfcounter *perf;
 732         GList *perflist;
 733
 734         if (!data)
 735                 return;
 736
 737         werase(perf_panel_window);
 738         box(perf_panel_window, 0 , 0);
 739         set_window_title(perf_panel_window, "Perf Preferences ");
 740         wattron(perf_panel_window, A_BOLD);
 741         mvwprintw(perf_panel_window, g_hash_table_size(data->perf_list) + 1, 1,
 742                         " 's' to sort");
 743         wattroff(perf_panel_window, A_BOLD);
 744
 745         if (toggle_sort == 1) {
 746                 i = 0;
 747                 perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 748                 while (perflist) {
 749                         perf = g_hash_table_lookup(data->perf_list, perflist->data);
 750                         if (i != line_selected)
 751                                 perf->sort = 0;
 752                         else
 753                                 perf->sort = 1;
 754                         i++;
 755                         perflist = g_list_next(perflist);
 756                 }
 757                 update_current_view();
 758         }
 759
 760         i = 0;
 761         perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 762         while (perflist) {
 763                 perf = g_hash_table_lookup(data->perf_list, perflist->data);
 764                 if (i == line_selected && toggle_view == 1) {
 765                         perf->visible = perf->visible == 1 ? 0:1;
 766                         update_current_view();
 767                 }
 768                 if (i == line_selected) {
 769                         wattron(perf_panel_window, COLOR_PAIR(5));
 770                         mvwhline(perf_panel_window, i + 1, 1, ' ', 30 - 2);
 771                 }
 772                 if (perf->sort == 1)
 773                         wattron(perf_panel_window, A_BOLD);
 774                 mvwprintw(perf_panel_window, i + 1, 1, "[%c] %s",
 775                                 perf->visible == 1 ? 'x' : ' ',
 776                                 (char *) perflist->data + 6);
 777                 wattroff(perf_panel_window, A_BOLD);
 778                 wattroff(perf_panel_window, COLOR_PAIR(5));
 779                 i++;
 780                 perflist = g_list_next(perflist);
 781         }
 782         update_panels();
 783         doupdate();
 784 }
 785
 786
 787 void toggle_perf_panel(void)
 788 {
 789         if (perf_panel_visible) {
 790                 hide_panel(perf_panel);
 791                 perf_panel_visible = 0;
 792         } else {
 793                 setup_perf_panel();
 794                 update_perf_panel(perf_line_selected, 0, 0);
 795                 show_panel(perf_panel);
 796                 perf_panel_visible = 1;
 797         }
 798         update_panels();
 799         doupdate();
 800 }
 801
 802 void display(unsigned int index)
 803 {
 804         last_display_index = index;
 805         currently_displayed_index = index;
 806         data = g_ptr_array_index(copies, index);
 807         if (!data)
 808                 return;
 809         max_elements = data->process_table->len;
 810         update_current_view();
 811         update_footer();
 812         update_panels();
 813         doupdate();
 814 }
 815
 816 void pause_display()
 817 {
 818         toggle_pause = 1;
 819         print_log("Pause");
 820         sem_wait(&pause_sem);
 821 }
 822
 823 void resume_display()
 824 {
 825         toggle_pause = -1;
 826         print_log("Resume");
 827         sem_post(&pause_sem);
 828 }
 829
 830 void *handle_keyboard(void *p)
 831 {
 832         int ch;
 833         while((ch = getch())) {
 834                 switch(ch) {
 835                 /* Move the cursor and scroll */
 836                 case KEY_DOWN:
 837                         if (perf_panel_visible) {
 838                                 if (perf_line_selected < g_hash_table_size(data->perf_list) - 1)
 839                                         perf_line_selected++;
 840                                 update_perf_panel(perf_line_selected, 0, 0);
 841                         } else {
 842                                 if (selected_line < (max_center_lines - 1) &&
 843                                                 selected_line < max_elements - 1) {
 844                                         selected_line++;
 845                                         selected_in_list++;
 846                                 } else if (selected_in_list < (max_elements - 1)
 847                                                 && (list_offset < (max_elements - max_center_lines))) {
 848                                         selected_in_list++;
 849                                         list_offset++;
 850                                 }
 851                                 update_current_view();
 852                         }
 853                         break;
 854                 case KEY_NPAGE:
 855                         if ((selected_line + 10 < max_center_lines - 1) &&
 856                                         ((selected_line + 10) < max_elements - 1)) {
 857                                 selected_line += 10;
 858                                 selected_in_list += 10;
 859                         } else if (max_elements > max_center_lines) {
 860                                 selected_line = max_center_lines - 1;
 861                                 if (selected_in_list + 10 < max_elements - 1) {
 862                                         selected_in_list += 10;
 863                                         list_offset += (selected_in_list - max_center_lines + 1);
 864                                 }
 865                         } else if (selected_line + 10 > max_elements) {
 866                                 selected_line = max_elements - 1;
 867                         }
 868                         update_current_view();
 869                         break;
 870                 case KEY_UP:
 871                         if (perf_panel_visible) {
 872                                 if (perf_line_selected > 0)
 873                                         perf_line_selected--;
 874                                 update_perf_panel(perf_line_selected, 0, 0);
 875                         } else {
 876                                 if (selected_line > 0) {
 877                                         selected_line--;
 878                                         selected_in_list--;
 879                                 } else if (selected_in_list > 0 && list_offset > 0) {
 880                                         selected_in_list--;
 881                                         list_offset--;
 882                                 }
 883                                 update_current_view();
 884                         }
 885                         break;
 886                 case KEY_PPAGE:
 887                         if (selected_line - 10 > 0)
 888                                 selected_line -= 10;
 889                         else
 890                                 selected_line = 0;
 891                         update_current_view();
 892                         break;
 893
 894                 /* Navigate the history with arrows */
 895                 case KEY_LEFT:
 896                         if (currently_displayed_index > 0) {
 897                                 currently_displayed_index--;
 898                                 print_log("Going back in time");
 899                         } else {
 900                                 print_log("Cannot rewind, last data is already displayed");
 901                         }
 902                         data = g_ptr_array_index(copies, currently_displayed_index);
 903                         max_elements = data->process_table->len;
 904
 905                         /* we force to pause the display when moving in time */
 906                         if (toggle_pause < 0)
 907                                 pause_display();
 908
 909                         update_current_view();
 910                         update_footer();
 911                         break;
 912                 case KEY_RIGHT:
 913                         if (currently_displayed_index < last_display_index) {
 914                                 currently_displayed_index++;
 915                                 print_log("Going forward in time");
 916                                 data = g_ptr_array_index(copies, currently_displayed_index);
 917                                 max_elements = data->process_table->len;
 918                                 update_current_view();
 919                                 update_footer();
 920                         } else {
 921                                 print_log("Manually moving forward");
 922                                 sem_post(&timer);
 923                                 /* we force to resume the refresh when moving forward */
 924                                 if (toggle_pause > 0)
 925                                         resume_display();
 926                         }
 927
 928                         break;
 929                 case ' ':
 930                         if (perf_panel_visible)
 931                                 update_perf_panel(perf_line_selected, 1, 0);
 932                         break;
 933                 case 's':
 934                         if (perf_panel_visible)
 935                                 update_perf_panel(perf_line_selected, 0, 1);
 936                         break;
 937
 938                 case 13: /* FIXME : KEY_ENTER ?? */
 939                         if (current_view == cpu) {
 940                                 current_view = process_details;
 941                         }
 942                         update_current_view();
 943                         break;
 944
 945                 case KEY_F(1):
 946                         toggle_tree *= -1;
 947                         current_view = cpu;
 948                         update_current_view();
 949                         break;
 950                 case KEY_F(2):
 951                         current_view = cpu;
 952                         update_current_view();
 953                         break;
 954                 case KEY_F(3):
 955                         current_view = perf;
 956                         toggle_tree = -1;
 957                         update_current_view();
 958                         break;
 959                 case KEY_F(4):
 960                         current_view = fileio;
 961                         toggle_tree = -1;
 962                         update_current_view();
 963                         break;
 964                 case KEY_F(5):
 965                         current_view = netio;
 966                         toggle_tree = -1;
 967                         update_current_view();
 968                         break;
 969                 case KEY_F(6):
 970                         current_view = iostream;
 971                         toggle_tree = -1;
 972                         update_current_view();
 973                         break;
 974                 case KEY_F(10):
 975                 case 'q':
 976                         reset_ncurses();
 977                         break;
 978                 case 't':
 979                         toggle_threads *= -1;
 980                         update_current_view();
 981                         break;
 982                 case 'p':
 983                         if (toggle_pause < 0) {
 984                                 pause_display();
 985                         } else {
 986                                 resume_display();
 987                         }
 988                         break;
 989                 case 'P':
 990                         toggle_perf_panel();
 991                         break;
 992                 default:
 993                         if (data)
 994                                 update_current_view();
 995                         break;
 996                 }
 997                 update_footer();
 998         }
 999         return NULL;
1000 }
1001
1002 void init_ncurses()
1003 {
1004         sem_init(&update_display_sem, 0, 1);
1005         init_screen();
1006
1007         header = create_window(7, COLS - 1, 0, 0);
1008         center = create_window(LINES - 7 - 7, COLS - 1, 7, 0);
1009         status = create_window(MAX_LOG_LINES + 2, COLS - 1, LINES - 7, 0);
1010         footer = create_window(1, COLS - 1, LINES - 1, 0);
1011
1012         print_log("Starting display");
1013
1014         main_panel = new_panel(center);
1015         setup_perf_panel();
1016
1017         current_view = cpu;
1018
1019         basic_header();
1020         update_footer();
1021
1022         pthread_create(&keyboard_thread, NULL, handle_keyboard, (void *)NULL);
1023 }
1024