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
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <signal.h>
  22 #include <string.h>
  23 #include <ncurses.h>
  24 #include <panel.h>
  25 #include <pthread.h>
  26 #include <semaphore.h>
  27
  28 #include "cursesdisplay.h"
  29 #include "lttngtoptypes.h"
  30 #include "iostreamtop.h"
  31 #include "common.h"
  32
  33 #define DEFAULT_DELAY 15
  34 #define MAX_LINE_LENGTH 50
  35 #define MAX_LOG_LINES 4
  36
  37 /* to prevent concurrent updates of the different windows */
  38 sem_t update_display_sem;
  39
  40 char *termtype;
  41 WINDOW *footer, *header, *center, *status;
  42 WINDOW *perf_panel_window = NULL;
  43 PANEL *perf_panel, *main_panel;
  44
  45 int perf_panel_visible = 0;
  46 int perf_line_selected = 0;
  47
  48 int last_display_index, currently_displayed_index;
  49
  50 struct processtop *selected_process = NULL;
  51 int selected_tid;
  52 char *selected_comm;
  53 int selected_ret;
  54
  55 int selected_line = 0; /* select bar position */
  56 int selected_in_list = 0; /* selection relative to the whole list */
  57 int list_offset = 0; /* first index in the list to display (scroll) */
  58 int nb_log_lines = 0;
  59 char log_lines[MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES];
  60
  61 int max_elements = 80;
  62
  63 int toggle_threads = -1;
  64 int toggle_pause = -1;
  65 int toggle_tree = -1;
  66
  67 int max_center_lines;
  68
  69 pthread_t keyboard_thread;
  70
  71 void reset_ncurses()
  72 {
  73         curs_set(1);
  74         endwin();
  75         exit(0);
  76 }
  77
  78 static void handle_sigterm(int signal)
  79 {
  80         reset_ncurses();
  81 }
  82
  83 void init_screen()
  84 {
  85         initscr();
  86         noecho();
  87         halfdelay(DEFAULT_DELAY);
  88         nonl();
  89         intrflush(stdscr, false);
  90         keypad(stdscr, true);
  91         curs_set(0);
  92
  93         if (has_colors()) {
  94                 start_color();
  95                 init_pair(1, COLOR_RED, COLOR_BLACK); /* - */
  96                 init_pair(2, COLOR_GREEN, COLOR_BLACK); /* + */
  97                 init_pair(3, COLOR_BLACK, COLOR_WHITE); /* keys */
  98                 init_pair(4, COLOR_WHITE, COLOR_GREEN); /* keys activated */
  99                 init_pair(5, COLOR_WHITE, COLOR_BLUE); /* select line */
 100         }
 101         termtype = getenv("TERM");
 102         if (!strcmp(termtype, "xterm") ||  !strcmp(termtype, "xterm-color") ||
 103                         !strcmp(termtype, "vt220")) {
 104                 define_key("\033[H", KEY_HOME);
 105                 define_key("\033[F", KEY_END);
 106                 define_key("\033OP", KEY_F(1));
 107                 define_key("\033OQ", KEY_F(2));
 108                 define_key("\033OR", KEY_F(3));
 109                 define_key("\033OS", KEY_F(4));
 110                 define_key("\0330U", KEY_F(6));
 111                 define_key("\033[11~", KEY_F(1));
 112                 define_key("\033[12~", KEY_F(2));
 113                 define_key("\033[13~", KEY_F(3));
 114                 define_key("\033[14~", KEY_F(4));
 115                 define_key("\033[16~", KEY_F(6));
 116                 define_key("\033[17;2~", KEY_F(18));
 117         }
 118         signal(SIGTERM, handle_sigterm);
 119         mousemask(BUTTON1_CLICKED, NULL);
 120         refresh();
 121 }
 122
 123 WINDOW *create_window(int height, int width, int startx, int starty)
 124 {
 125         WINDOW *win;
 126         win = newwin(height, width, startx, starty);
 127         box(win, 0 , 0);
 128         wrefresh(win);
 129         return win;
 130 }
 131
 132 WINDOW *create_window_no_border(int height, int width, int startx, int starty)
 133 {
 134         WINDOW *win;
 135         win = newwin(height, width, startx, starty);
 136         wrefresh(win);
 137         return win;
 138 }
 139
 140 void print_digit(WINDOW *win, int digit)
 141 {
 142         if (digit < 0) {
 143                 wattron(win, COLOR_PAIR(1));
 144                 wprintw(win, "%d", digit);
 145                 wattroff(win, COLOR_PAIR(1));
 146         } else if (digit > 0) {
 147                 wattron(win, COLOR_PAIR(2));
 148                 wprintw(win, "+%d", digit);
 149                 wattroff(win, COLOR_PAIR(2));
 150         } else {
 151                 wprintw(win, "0");
 152         }
 153 }
 154
 155 void print_digits(WINDOW *win, int first, int second)
 156 {
 157         wprintw(win, "(");
 158         print_digit(win, first);
 159         wprintw(win, ", ");
 160         print_digit(win, second);
 161         wprintw(win, ")");
 162 }
 163
 164 void print_headers(int line, char *desc, int value, int first, int second)
 165 {
 166         wattron(header, A_BOLD);
 167         mvwprintw(header, line, 4, "%s", desc);
 168         wattroff(header, A_BOLD);
 169         mvwprintw(header, line, 16, "N/A", value);
 170         wmove(header, line, 24);
 171         print_digits(header, first, second);
 172         wmove(header, line, 40);
 173 }
 174
 175 void set_window_title(WINDOW *win, char *title)
 176 {
 177         wattron(win, A_BOLD);
 178         mvwprintw(win, 0, 1, title);
 179         wattroff(win, A_BOLD);
 180 }
 181
 182 void print_log(char *str)
 183 {
 184         int i;
 185         int current_line = 1;
 186         int current_char = 1;
 187         char *tmp, *tmp2;
 188         /* rotate the line buffer */
 189         if (nb_log_lines >= MAX_LOG_LINES) {
 190                 tmp = strndup(log_lines, MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES);
 191                 tmp2 = strchr(tmp, '\n');
 192                 memset(log_lines, '\0', strlen(log_lines));
 193                 strncat(log_lines, tmp2 + 1, strlen(tmp2) - 1);
 194                 log_lines[strlen(log_lines)] = '\n';
 195                 log_lines[strlen(log_lines)] = '\0';
 196                 free(tmp);
 197         }
 198         nb_log_lines++;
 199
 200         strncat(log_lines, str, MAX_LINE_LENGTH - 1);
 201
 202         if (nb_log_lines < MAX_LOG_LINES)
 203                 log_lines[strlen(log_lines)] = '\n';
 204         log_lines[strlen(log_lines)] = '\0';
 205
 206         werase(status);
 207         box(status, 0 , 0);
 208         set_window_title(status, "Status");
 209         for (i = 0; i < strlen(log_lines); i++) {
 210                 if (log_lines[i] == '\n') {
 211                         wmove(status, ++current_line, 1);
 212                         current_char = 1;
 213                 } else {
 214                         mvwprintw(status, current_line, current_char++, "%c",
 215                                         log_lines[i]);
 216                 }
 217         }
 218         wrefresh(status);
 219 }
 220
 221 void print_key(WINDOW *win, char *key, char *desc, int toggle)
 222 {
 223         int pair;
 224         if (toggle > 0)
 225                 pair = 4;
 226         else
 227                 pair = 3;
 228         wattron(win, COLOR_PAIR(pair));
 229         wprintw(footer, "%s", key);
 230         wattroff(win, COLOR_PAIR(pair));
 231         wprintw(footer, ":%s", desc);
 232 }
 233
 234 void update_footer()
 235 {
 236         sem_wait(&update_display_sem);
 237         werase(footer);
 238         wmove(footer, 1, 1);
 239         print_key(footer, "F2", "CPUtop  ", current_view == cpu);
 240         print_key(footer, "F3", "PerfTop  ", current_view == perf);
 241         print_key(footer, "F6", "IOTop  ", current_view == iostream);
 242         print_key(footer, "Enter", "Details  ", current_view == process_details);
 243         print_key(footer, "q", "Quit | ", 0);
 244         print_key(footer, "P", "Perf Pref  ", 0);
 245         print_key(footer, "p", "Pause  ", toggle_pause);
 246
 247         wrefresh(footer);
 248         sem_post(&update_display_sem);
 249 }
 250
 251 void basic_header()
 252 {
 253         werase(header);
 254         box(header, 0 , 0);
 255         set_window_title(header, "Statistics for interval [gathering data...[");
 256         wattron(header, A_BOLD);
 257         mvwprintw(header, 1, 4, "CPUs");
 258         mvwprintw(header, 2, 4, "Processes");
 259         mvwprintw(header, 3, 4, "Threads");
 260         mvwprintw(header, 4, 4, "Files");
 261         mvwprintw(header, 5, 4, "Network");
 262         mvwprintw(header, 6, 4, "IO");
 263         wattroff(header, A_BOLD);
 264         wrefresh(header);
 265 }
 266
 267 void update_header()
 268 {
 269         werase(header);
 270         box(header, 0 , 0);
 271         set_window_title(header, "Statistics for interval ");
 272         wattron(header, A_BOLD);
 273         /*
 274         wprintw(header, "[%lu.%lu, %lu.%lu[",
 275                         data->start.tv_sec, data->start.tv_nsec,
 276                         data->end.tv_sec, data->end.tv_nsec);
 277                         */
 278         wprintw(header, "[%lu, %lu[",
 279             data->start,
 280             data->end);
 281         mvwprintw(header, 1, 4, "CPUs");
 282         wattroff(header, A_BOLD);
 283         wprintw(header, "\t%d\t(max/cpu : %0.2f%)", data->cpu_table->len,
 284                         100.0/data->cpu_table->len);
 285         print_headers(2, "Processes", data->nbproc, data->nbnewproc,
 286                         -1*(data->nbdeadproc));
 287         print_headers(3, "Threads", data->nbthreads, data->nbnewthreads,
 288                         -1*(data->nbdeadthreads));
 289         print_headers(4, "Files", data->nbfiles, data->nbnewfiles,
 290                         -1*(data->nbclosedfiles));
 291         mvwprintw(header, 4, 43, "N/A kbytes/sec");
 292         print_headers(5, "Network", 114, 0, 0);
 293         mvwprintw(header, 5, 43, "N/A Mbytes/sec");
 294         wrefresh(header);
 295 }
 296
 297 gint sort_by_cpu_desc(gconstpointer p1, gconstpointer p2)
 298 {
 299         struct processtop *n1 = *(struct processtop **)p1;
 300         struct processtop *n2 = *(struct processtop **)p2;
 301         unsigned long totaln1 = n1->totalcpunsec;
 302         unsigned long totaln2 = n2->totalcpunsec;
 303
 304         if (totaln1 < totaln2)
 305                 return 1;
 306         if (totaln1 == totaln2)
 307                 return 0;
 308         return -1;
 309 }
 310
 311 gint sort_by_cpu_group_by_threads_desc(gconstpointer p1, gconstpointer p2)
 312 {
 313         struct processtop *n1 = *(struct processtop **)p1;
 314         struct processtop *n2 = *(struct processtop **)p2;
 315         unsigned long totaln1 = n1->threadstotalcpunsec;
 316         unsigned long totaln2 = n2->threadstotalcpunsec;
 317
 318         if (totaln1 < totaln2)
 319                 return 1;
 320         if (totaln1 == totaln2)
 321                 return 0;
 322         return -1;
 323 }
 324
 325 void update_cputop_display()
 326 {
 327         int i;
 328         int header_offset = 2;
 329         struct processtop *tmp;
 330         unsigned long elapsed;
 331         double maxcputime;
 332         int nblinedisplayed = 0;
 333         int current_line = 0;
 334
 335         elapsed = data->end - data->start;
 336         maxcputime = elapsed * data->cpu_table->len / 100.0;
 337
 338         g_ptr_array_sort(data->process_table, sort_by_cpu_desc);
 339
 340         set_window_title(center, "CPU Top");
 341         wattron(center, A_BOLD);
 342         mvwprintw(center, 1, 1, "CPU(%)");
 343         mvwprintw(center, 1, 12, "TGID");
 344         mvwprintw(center, 1, 22, "PID");
 345         mvwprintw(center, 1, 32, "NAME");
 346         wattroff(center, A_BOLD);
 347
 348         max_center_lines = LINES - 7 - 7 - 1 - header_offset;
 349
 350         /* iterate the process (thread) list */
 351         for (i = list_offset; i < data->process_table->len &&
 352                         nblinedisplayed < max_center_lines; i++) {
 353                 tmp = g_ptr_array_index(data->process_table, i);
 354
 355                 if (current_line == selected_line) {
 356                         selected_process = tmp;
 357                         selected_tid = tmp->tid;
 358                         selected_comm = tmp->comm;
 359                         wattron(center, COLOR_PAIR(5));
 360                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 361                 }
 362                 /* CPU(%) */
 363                 mvwprintw(center, current_line + header_offset, 1, "%1.2f",
 364                                 tmp->totalcpunsec / maxcputime);
 365                 /* TGID */
 366                 mvwprintw(center, current_line + header_offset, 12, "%d", tmp->pid);
 367                 /* PID */
 368                 mvwprintw(center, current_line + header_offset, 22, "%d", tmp->tid);
 369                 /* NAME */
 370                 mvwprintw(center, current_line + header_offset, 32, "%s", tmp->comm);
 371                 wattroff(center, COLOR_PAIR(5));
 372                 nblinedisplayed++;
 373                 current_line++;
 374         }
 375 }
 376
 377 gint sort_perf(gconstpointer p1, gconstpointer p2, gpointer key)
 378 {
 379         struct processtop *n1 = *(struct processtop **) p1;
 380         struct processtop *n2 = *(struct processtop **) p2;
 381
 382         struct perfcounter *tmp1, *tmp2;
 383         unsigned long totaln2 = 0;
 384         unsigned long totaln1 = 0;
 385
 386         if (!key)
 387                 return 0;
 388
 389         tmp1 = g_hash_table_lookup(n1->perf, key);
 390         if (!tmp1)
 391                 totaln1 = 0;
 392         else
 393                 totaln1 = tmp1->count;
 394
 395         tmp2 = g_hash_table_lookup(n2->perf, key);
 396         if (!tmp2)
 397                 totaln2 = 0;
 398         else
 399                 totaln2 = tmp2->count;
 400
 401         if (totaln1 < totaln2)
 402                 return 1;
 403         if (totaln1 == totaln2) {
 404                 totaln1 = n1->tid;
 405                 totaln2 = n2->tid;
 406                 if (totaln1 < totaln2)
 407                         return 1;
 408                 return -1;
 409         }
 410         return -1;
 411 }
 412
 413 void print_key_title(char *key, int line)
 414 {
 415         wattron(center, A_BOLD);
 416         mvwprintw(center, line, 1, "%s\t", key);
 417         wattroff(center, A_BOLD);
 418 }
 419
 420 void update_process_details()
 421 {
 422         unsigned long elapsed;
 423         double maxcputime;
 424         struct processtop *tmp = find_process_tid(data, selected_tid, selected_comm);
 425         struct files *file_tmp;
 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
 468 void update_perf()
 469 {
 470         int i;
 471         int nblinedisplayed = 0;
 472         int current_line = 0;
 473         struct processtop *tmp;
 474         int header_offset = 2;
 475         int perf_row = 40;
 476         struct perfcounter *perfn1, *perfn2;
 477         char *perf_key = NULL;
 478         int value;
 479         GHashTableIter iter;
 480         gpointer key;
 481
 482         set_window_title(center, "Perf Top");
 483         wattron(center, A_BOLD);
 484         mvwprintw(center, 1, 1, "PID");
 485         mvwprintw(center, 1, 11, "TID");
 486         mvwprintw(center, 1, 22, "NAME");
 487
 488         perf_row = 40;
 489         g_hash_table_iter_init(&iter, data->perf_list);
 490         while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 491                 if (perfn1->visible) {
 492                         /* + 6 to strip the "_perf_" prefix */
 493                         mvwprintw(center, 1, perf_row, "%s",
 494                                         (char *) key + 6);
 495                         perf_row += 20;
 496                 }
 497                 if (perfn1->sort) {
 498                         perf_key = (char *) key;
 499                 }
 500         }
 501
 502         wattroff(center, A_BOLD);
 503
 504         g_ptr_array_sort_with_data(data->process_table, sort_perf, perf_key);
 505
 506         for (i = 0; i < data->process_table->len &&
 507                         nblinedisplayed < max_center_lines; i++) {
 508                 tmp = g_ptr_array_index(data->process_table, i);
 509
 510                 if (current_line == selected_line) {
 511                         selected_process = tmp;
 512                         wattron(center, COLOR_PAIR(5));
 513                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 514                 }
 515
 516                 mvwprintw(center, current_line + header_offset, 1, "%d", tmp->pid);
 517                 mvwprintw(center, current_line + header_offset, 11, "%d", tmp->tid);
 518                 mvwprintw(center, current_line + header_offset, 22, "%s", tmp->comm);
 519
 520                 g_hash_table_iter_init(&iter, data->perf_list);
 521
 522                 perf_row = 40;
 523                 while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 524                         if (perfn1->visible) {
 525                                 perfn2 = g_hash_table_lookup(tmp->perf, (char *) key);
 526                                 if (perfn2)
 527                                         value = perfn2->count;
 528                                 else
 529                                         value = 0;
 530                                 mvwprintw(center, current_line + header_offset,
 531                                                 perf_row, "%d", value);
 532                                 perf_row += 20;
 533                         }
 534                 }
 535
 536                 wattroff(center, COLOR_PAIR(5));
 537                 nblinedisplayed++;
 538                 current_line++;
 539         }
 540 }
 541
 542 void update_fileio()
 543 {
 544         int i;
 545         int offset;
 546
 547         set_window_title(center, "IO Top");
 548         wattron(center, A_BOLD);
 549         mvwprintw(center, 1, 10, "READ");
 550         mvwprintw(center, 2, 1, "bytes");
 551         mvwprintw(center, 2, 15, "bytes/sec");
 552
 553         mvwprintw(center, 1, 39, "WRITE");
 554         mvwprintw(center, 2, 33, "bytes");
 555         mvwprintw(center, 2, 45, "bytes/sec");
 556
 557         if (toggle_threads > 0) {
 558                 mvwprintw(center, 1, 60, "TGID");
 559                 mvwprintw(center, 1, 70, "PID");
 560                 offset = 8;
 561         } else {
 562                 mvwprintw(center, 1, 60, "PID(TGID)");
 563                 offset = 0;
 564         }
 565         mvwprintw(center, 1, 72 + offset, "NAME");
 566         wattroff(center, A_BOLD);
 567
 568         for (i = 3; i < LINES - 3 - 8 - 1; i++) {
 569                 mvwprintw(center, i, 1, "%d", i*1000);
 570                 mvwprintw(center, i, 15, "%dk", i);
 571                 mvwprintw(center, i, 28, "|    %d", i*2000);
 572                 mvwprintw(center, i, 45, "%dk", i*2);
 573                 if (toggle_threads > 0) {
 574                         mvwprintw(center, i, 57, "|  %d", i);
 575                         mvwprintw(center, i, 70, "%d", i);
 576                 } else {
 577                         mvwprintw(center, i, 57, "|  %d", i);
 578                 }
 579                 mvwprintw(center, i, 72 + offset, "process_%d", i);
 580         }
 581 }
 582
 583 gint sort_by_ret_desc(gconstpointer p1, gconstpointer p2)
 584 {
 585         struct processtop *n1 = *(struct processtop **)p1;
 586         struct processtop *n2 = *(struct processtop **)p2;
 587
 588         unsigned long totaln1 = n1->totalfileread + n1->totalfilewrite;
 589         unsigned long totaln2 = n2->totalfileread + n2->totalfilewrite;
 590
 591         if (totaln1 < totaln2)
 592                 return 1;
 593         if (totaln1 == totaln2)
 594                 return 0;
 595         return -1;
 596 }
 597
 598 void update_iostream()
 599 {
 600         int i;
 601         int header_offset = 2;
 602         struct processtop *tmp;
 603         int nblinedisplayed = 0;
 604         int current_line = 0;
 605         int total = 0;
 606
 607         set_window_title(center, "IO Top");
 608         wattron(center, A_BOLD);
 609         mvwprintw(center, 1, 1, "READ (B/s)");
 610         mvwprintw(center, 1, 20, "WRITE (B/s)");
 611
 612         mvwprintw(center, 1, 40, "TOTAL STREAM");
 613
 614         mvwprintw(center, 1, 60, "TGID");
 615         mvwprintw(center, 1, 80, "PID");
 616
 617         mvwprintw(center, 1, 92, "NAME");
 618         wattroff(center, A_BOLD);
 619
 620         g_ptr_array_sort(data->process_table, sort_by_ret_desc);
 621
 622         for (i = list_offset; i < data->process_table->len &&
 623                         nblinedisplayed < max_center_lines; i++) {
 624                 tmp = g_ptr_array_index(data->process_table, i);
 625
 626                 if (current_line == selected_line) {
 627                         selected_process = tmp;
 628                         selected_tid = tmp->tid;
 629                         selected_comm = tmp->comm;
 630                         wattron(center, COLOR_PAIR(5));
 631                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 632                 }
 633
 634                 /* READ (bytes/sec) */
 635                 mvwprintw(center, current_line + header_offset, 1, "%lu",
 636                         tmp->fileread);
 637
 638                 /* WRITE (bytes/sec) */
 639                 mvwprintw(center, current_line + header_offset, 20, "%lu",
 640                         tmp->filewrite);
 641
 642                 /* TOTAL STREAM */
 643                 total = tmp->totalfileread + tmp->totalfilewrite;
 644
 645                 if (total >= 1000000)
 646                         mvwprintw(center, current_line + header_offset, 40, "%lu MB",
 647                                         total/1000000);
 648                 else if (total >= 1000)
 649                         mvwprintw(center, current_line + header_offset, 40, "%lu KB",
 650                                         total/1000);
 651                 else
 652                         mvwprintw(center, current_line + header_offset, 40, "%lu B",
 653                                         total);
 654
 655                 /* TGID */
 656                 mvwprintw(center, current_line + header_offset, 60, "%d", tmp->pid);
 657                 /* PID */
 658                 mvwprintw(center, current_line + header_offset, 80, "%d", tmp->tid);
 659                 /* NAME */
 660                 mvwprintw(center, current_line + header_offset, 92, "%s", tmp->comm);
 661                 wattroff(center, COLOR_PAIR(5));
 662                 nblinedisplayed++;
 663                 current_line++;
 664         }
 665 }
 666
 667 void update_current_view()
 668 {
 669         sem_wait(&update_display_sem);
 670         if (!data)
 671                 return;
 672         update_header();
 673
 674         werase(center);
 675         box(center, 0, 0);
 676         switch (current_view) {
 677         case cpu:
 678                 update_cputop_display();
 679                 break;
 680         case perf:
 681                 update_perf();
 682                 break;
 683         case process_details:
 684                 update_process_details();
 685                 break;
 686         case fileio:
 687                 update_fileio();
 688                 break;
 689         case iostream:
 690                 update_iostream();
 691                 break;
 692         case tree:
 693                 update_cputop_display();
 694                 break;
 695         default:
 696                 break;
 697         }
 698         update_panels();
 699         doupdate();
 700         sem_post(&update_display_sem);
 701 }
 702
 703 void setup_perf_panel()
 704 {
 705         int size;
 706         if (!data)
 707                 return;
 708         if (perf_panel_window) {
 709                 del_panel(perf_panel);
 710                 delwin(perf_panel_window);
 711         }
 712         size = g_hash_table_size(data->perf_list);
 713         perf_panel_window = create_window(size + 2, 30, 10, 10);
 714         perf_panel = new_panel(perf_panel_window);
 715         perf_panel_visible = 0;
 716         hide_panel(perf_panel);
 717 }
 718
 719 void update_perf_panel(int line_selected, int toggle_view, int toggle_sort)
 720 {
 721         int i;
 722         struct perfcounter *perf;
 723         GList *perflist;
 724
 725         if (!data)
 726                 return;
 727
 728         werase(perf_panel_window);
 729         box(perf_panel_window, 0 , 0);
 730         set_window_title(perf_panel_window, "Perf Preferences ");
 731         wattron(perf_panel_window, A_BOLD);
 732         mvwprintw(perf_panel_window, g_hash_table_size(data->perf_list) + 1, 1,
 733                         " 's' to sort");
 734         wattroff(perf_panel_window, A_BOLD);
 735
 736         if (toggle_sort == 1) {
 737                 i = 0;
 738                 perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 739                 while (perflist) {
 740                         perf = g_hash_table_lookup(data->perf_list, perflist->data);
 741                         if (i != line_selected)
 742                                 perf->sort = 0;
 743                         else
 744                                 perf->sort = 1;
 745                         i++;
 746                         perflist = g_list_next(perflist);
 747                 }
 748                 update_current_view();
 749         }
 750
 751         i = 0;
 752         perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 753         while (perflist) {
 754                 perf = g_hash_table_lookup(data->perf_list, perflist->data);
 755                 if (i == line_selected && toggle_view == 1) {
 756                         perf->visible = perf->visible == 1 ? 0:1;
 757                         update_current_view();
 758                 }
 759                 if (i == line_selected) {
 760                         wattron(perf_panel_window, COLOR_PAIR(5));
 761                         mvwhline(perf_panel_window, i + 1, 1, ' ', 30 - 2);
 762                 }
 763                 if (perf->sort == 1)
 764                         wattron(perf_panel_window, A_BOLD);
 765                 mvwprintw(perf_panel_window, i + 1, 1, "[%c] %s",
 766                                 perf->visible == 1 ? 'x' : ' ',
 767                                 (char *) perflist->data + 6);
 768                 wattroff(perf_panel_window, A_BOLD);
 769                 wattroff(perf_panel_window, COLOR_PAIR(5));
 770                 i++;
 771                 perflist = g_list_next(perflist);
 772         }
 773         update_panels();
 774         doupdate();
 775 }
 776
 777
 778 void toggle_perf_panel(void)
 779 {
 780         if (perf_panel_visible) {
 781                 hide_panel(perf_panel);
 782                 perf_panel_visible = 0;
 783         } else {
 784                 setup_perf_panel();
 785                 update_perf_panel(perf_line_selected, 0, 0);
 786                 show_panel(perf_panel);
 787                 perf_panel_visible = 1;
 788         }
 789         update_panels();
 790         doupdate();
 791 }
 792
 793 void display(unsigned int index)
 794 {
 795         last_display_index = index;
 796         currently_displayed_index = index;
 797         data = g_ptr_array_index(copies, index);
 798         if (!data)
 799                 return;
 800         max_elements = data->process_table->len;
 801         update_current_view();
 802         update_footer();
 803         update_panels();
 804         doupdate();
 805 }
 806
 807 void pause_display()
 808 {
 809         toggle_pause = 1;
 810         print_log("Pause");
 811         sem_wait(&pause_sem);
 812 }
 813
 814 void resume_display()
 815 {
 816         toggle_pause = -1;
 817         print_log("Resume");
 818         sem_post(&pause_sem);
 819 }
 820
 821 void *handle_keyboard(void *p)
 822 {
 823         int ch;
 824         while((ch = getch())) {
 825                 switch(ch) {
 826                 /* Move the cursor and scroll */
 827                 case KEY_DOWN:
 828                         if (perf_panel_visible) {
 829                                 if (perf_line_selected < g_hash_table_size(data->perf_list) - 1)
 830                                         perf_line_selected++;
 831                                 update_perf_panel(perf_line_selected, 0, 0);
 832                         } else {
 833                                 if (selected_line < (max_center_lines - 1) &&
 834                                                 selected_line < max_elements - 1) {
 835                                         selected_line++;
 836                                         selected_in_list++;
 837                                 } else if (selected_in_list < (max_elements - 1)
 838                                                 && (list_offset < (max_elements - max_center_lines))) {
 839                                         selected_in_list++;
 840                                         list_offset++;
 841                                 }
 842                                 update_current_view();
 843                         }
 844                         break;
 845                 case KEY_NPAGE:
 846                         if ((selected_line + 10 < max_center_lines - 1) &&
 847                                         ((selected_line + 10) < max_elements - 1)) {
 848                                 selected_line += 10;
 849                                 selected_in_list += 10;
 850                         } else if (max_elements > max_center_lines) {
 851                                 selected_line = max_center_lines - 1;
 852                                 if (selected_in_list + 10 < max_elements - 1) {
 853                                         selected_in_list += 10;
 854                                         list_offset += (selected_in_list - max_center_lines + 1);
 855                                 }
 856                         } else if (selected_line + 10 > max_elements) {
 857                                 selected_line = max_elements - 1;
 858                         }
 859                         update_current_view();
 860                         break;
 861                 case KEY_UP:
 862                         if (perf_panel_visible) {
 863                                 if (perf_line_selected > 0)
 864                                         perf_line_selected--;
 865                                 update_perf_panel(perf_line_selected, 0, 0);
 866                         } else {
 867                                 if (selected_line > 0) {
 868                                         selected_line--;
 869                                         selected_in_list--;
 870                                 } else if (selected_in_list > 0 && list_offset > 0) {
 871                                         selected_in_list--;
 872                                         list_offset--;
 873                                 }
 874                                 update_current_view();
 875                         }
 876                         break;
 877                 case KEY_PPAGE:
 878                         if (selected_line - 10 > 0)
 879                                 selected_line -= 10;
 880                         else
 881                                 selected_line = 0;
 882                         update_current_view();
 883                         break;
 884
 885                 /* Navigate the history with arrows */
 886                 case KEY_LEFT:
 887                         if (currently_displayed_index > 0) {
 888                                 currently_displayed_index--;
 889                                 print_log("Going back in time");
 890                         } else {
 891                                 print_log("Cannot rewind, last data is already displayed");
 892                         }
 893                         data = g_ptr_array_index(copies, currently_displayed_index);
 894                         max_elements = data->process_table->len;
 895
 896                         /* we force to pause the display when moving in time */
 897                         if (toggle_pause < 0)
 898                                 pause_display();
 899
 900                         update_current_view();
 901                         update_footer();
 902                         break;
 903                 case KEY_RIGHT:
 904                         if (currently_displayed_index < last_display_index) {
 905                                 currently_displayed_index++;
 906                                 print_log("Going forward in time");
 907                                 data = g_ptr_array_index(copies, currently_displayed_index);
 908                                 max_elements = data->process_table->len;
 909                                 update_current_view();
 910                                 update_footer();
 911                         } else {
 912                                 print_log("Manually moving forward");
 913                                 sem_post(&timer);
 914                                 /* we force to resume the refresh when moving forward */
 915                                 if (toggle_pause > 0)
 916                                         resume_display();
 917                         }
 918
 919                         break;
 920                 case ' ':
 921                         if (perf_panel_visible)
 922                                 update_perf_panel(perf_line_selected, 1, 0);
 923                         break;
 924                 case 's':
 925                         if (perf_panel_visible)
 926                                 update_perf_panel(perf_line_selected, 0, 1);
 927                         break;
 928
 929                 case 13: /* FIXME : KEY_ENTER ?? */
 930                         if (current_view == cpu) {
 931                                 current_view = process_details;
 932                         }
 933                         update_current_view();
 934                         break;
 935
 936                 case KEY_F(1):
 937                         toggle_tree *= -1;
 938                         current_view = cpu;
 939                         update_current_view();
 940                         break;
 941                 case KEY_F(2):
 942                         current_view = cpu;
 943                         update_current_view();
 944                         break;
 945                 case KEY_F(3):
 946                         current_view = perf;
 947                         toggle_tree = -1;
 948                         update_current_view();
 949                         break;
 950                 case KEY_F(4):
 951                         current_view = fileio;
 952                         toggle_tree = -1;
 953                         update_current_view();
 954                         break;
 955                 case KEY_F(5):
 956                         current_view = netio;
 957                         toggle_tree = -1;
 958                         update_current_view();
 959                         break;
 960                 case KEY_F(6):
 961                         current_view = iostream;
 962                         toggle_tree = -1;
 963                         update_current_view();
 964                         break;
 965                 case KEY_F(10):
 966                 case 'q':
 967                         reset_ncurses();
 968                         break;
 969                 case 't':
 970                         toggle_threads *= -1;
 971                         update_current_view();
 972                         break;
 973                 case 'p':
 974                         if (toggle_pause < 0) {
 975                                 pause_display();
 976                         } else {
 977                                 resume_display();
 978                         }
 979                         break;
 980                 case 'P':
 981                         toggle_perf_panel();
 982                         break;
 983                 default:
 984                         if (data)
 985                                 update_current_view();
 986                         break;
 987                 }
 988                 update_footer();
 989         }
 990         return NULL;
 991 }
 992
 993 void init_ncurses()
 994 {
 995         sem_init(&update_display_sem, 0, 1);
 996         init_screen();
 997
 998         header = create_window(7, COLS - 1, 0, 0);
 999         center = create_window(LINES - 7 - 7, COLS - 1, 7, 0);
1000         status = create_window(MAX_LOG_LINES + 2, COLS - 1, LINES - 7, 0);
1001         footer = create_window(1, COLS - 1, LINES - 1, 0);
1002
1003         print_log("Starting display");
1004
1005         main_panel = new_panel(center);
1006         setup_perf_panel();
1007
1008         current_view = cpu;
1009
1010         basic_header();
1011         update_footer();
1012
1013         pthread_create(&keyboard_thread, NULL, handle_keyboard, (void *)NULL);
1014 }
1015