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 "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", log_lines[i]);
 214                 }
 215         }
 216         wrefresh(status);
 217 }
 218
 219 void print_key(WINDOW *win, char *key, char *desc, int toggle)
 220 {
 221         int pair;
 222         if (toggle > 0)
 223                 pair = 4;
 224         else
 225                 pair = 3;
 226         wattron(win, COLOR_PAIR(pair));
 227         wprintw(footer, "%s", key);
 228         wattroff(win, COLOR_PAIR(pair));
 229         wprintw(footer, ":%s", desc);
 230 }
 231
 232 void update_footer()
 233 {
 234         sem_wait(&update_display_sem);
 235         werase(footer);
 236         wmove(footer, 1, 1);
 237         print_key(footer, "F2", "CPUtop  ", current_view == cpu);
 238         print_key(footer, "F3", "PerfTop  ", current_view == perf);
 239         print_key(footer, "F6", "IOTop  ", current_view == iostream);
 240         print_key(footer, "Enter", "Details  ", current_view == process_details);
 241         print_key(footer, "q", "Quit | ", 0);
 242         print_key(footer, "P", "Perf Pref  ", 0);
 243         print_key(footer, "p", "Pause  ", toggle_pause);
 244
 245         wrefresh(footer);
 246         sem_post(&update_display_sem);
 247 }
 248
 249 void basic_header()
 250 {
 251         werase(header);
 252         box(header, 0 , 0);
 253         set_window_title(header, "Statistics for interval [gathering data...[");
 254         wattron(header, A_BOLD);
 255         mvwprintw(header, 1, 4, "CPUs");
 256         mvwprintw(header, 2, 4, "Processes");
 257         mvwprintw(header, 3, 4, "Threads");
 258         mvwprintw(header, 4, 4, "Files");
 259         mvwprintw(header, 5, 4, "Network");
 260         mvwprintw(header, 6, 4, "IO");
 261         wattroff(header, A_BOLD);
 262         wrefresh(header);
 263 }
 264
 265 void update_header()
 266 {
 267         werase(header);
 268         box(header, 0 , 0);
 269         set_window_title(header, "Statistics for interval ");
 270         wattron(header, A_BOLD);
 271         /*
 272         wprintw(header, "[%lu.%lu, %lu.%lu[",
 273                         data->start.tv_sec, data->start.tv_nsec,
 274                         data->end.tv_sec, data->end.tv_nsec);
 275                         */
 276         wprintw(header, "[%lu, %lu[",
 277             data->start,
 278             data->end);
 279         mvwprintw(header, 1, 4, "CPUs");
 280         wattroff(header, A_BOLD);
 281         wprintw(header, "\t%d\t(max/cpu : %0.2f%)", data->cpu_table->len,
 282                         100.0/data->cpu_table->len);
 283         print_headers(2, "Processes", data->nbproc, data->nbnewproc,
 284                         -1*(data->nbdeadproc));
 285         print_headers(3, "Threads", data->nbthreads, data->nbnewthreads,
 286                         -1*(data->nbdeadthreads));
 287         print_headers(4, "Files", data->nbfiles, data->nbnewfiles,
 288                         -1*(data->nbclosedfiles));
 289         mvwprintw(header, 4, 43, "N/A kbytes/sec");
 290         print_headers(5, "Network", 114, 0, 0);
 291         mvwprintw(header, 5, 43, "N/A Mbytes/sec");
 292         wrefresh(header);
 293 }
 294
 295 gint sort_by_cpu_desc(gconstpointer p1, gconstpointer p2)
 296 {
 297         struct processtop *n1 = *(struct processtop **)p1;
 298         struct processtop *n2 = *(struct processtop **)p2;
 299         unsigned long totaln1 = n1->totalcpunsec;
 300         unsigned long totaln2 = n2->totalcpunsec;
 301
 302         if (totaln1 < totaln2)
 303                 return 1;
 304         if (totaln1 == totaln2)
 305                 return 0;
 306         return -1;
 307 }
 308
 309 gint sort_by_cpu_group_by_threads_desc(gconstpointer p1, gconstpointer p2)
 310 {
 311         struct processtop *n1 = *(struct processtop **)p1;
 312         struct processtop *n2 = *(struct processtop **)p2;
 313         unsigned long totaln1 = n1->threadstotalcpunsec;
 314         unsigned long totaln2 = n2->threadstotalcpunsec;
 315
 316         if (totaln1 < totaln2)
 317                 return 1;
 318         if (totaln1 == totaln2)
 319                 return 0;
 320         return -1;
 321 }
 322
 323 void update_cputop_display()
 324 {
 325         int i;
 326         int header_offset = 2;
 327         struct processtop *tmp;
 328         unsigned long elapsed;
 329         double maxcputime;
 330         int nblinedisplayed = 0;
 331         int current_line = 0;
 332
 333         elapsed = data->end - data->start;
 334         maxcputime = elapsed * data->cpu_table->len / 100.0;
 335
 336         g_ptr_array_sort(data->process_table, sort_by_cpu_desc);
 337
 338         set_window_title(center, "CPU Top");
 339         wattron(center, A_BOLD);
 340         mvwprintw(center, 1, 1, "CPU(%)");
 341         mvwprintw(center, 1, 12, "TGID");
 342         mvwprintw(center, 1, 22, "PID");
 343         mvwprintw(center, 1, 32, "NAME");
 344         wattroff(center, A_BOLD);
 345
 346         max_center_lines = LINES - 7 - 7 - 1 - header_offset;
 347
 348         /* iterate the process (thread) list */
 349         for (i = list_offset; i < data->process_table->len &&
 350                         nblinedisplayed < max_center_lines; i++) {
 351                 tmp = g_ptr_array_index(data->process_table, i);
 352
 353                 if (current_line == selected_line) {
 354                         selected_process = tmp;
 355                         selected_tid = tmp->tid;
 356                         selected_comm = tmp->comm;
 357                         wattron(center, COLOR_PAIR(5));
 358                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 359                 }
 360                 /* CPU(%) */
 361                 mvwprintw(center, current_line + header_offset, 1, "%1.2f",
 362                                 tmp->totalcpunsec / maxcputime);
 363                 /* TGID */
 364                 mvwprintw(center, current_line + header_offset, 12, "%d", tmp->pid);
 365                 /* PID */
 366                 mvwprintw(center, current_line + header_offset, 22, "%d", tmp->tid);
 367                 /* NAME */
 368                 mvwprintw(center, current_line + header_offset, 32, "%s", tmp->comm);
 369                 wattroff(center, COLOR_PAIR(5));
 370                 nblinedisplayed++;
 371                 current_line++;
 372         }
 373 }
 374
 375 gint sort_perf(gconstpointer p1, gconstpointer p2, gpointer key)
 376 {
 377         struct processtop *n1 = *(struct processtop **) p1;
 378         struct processtop *n2 = *(struct processtop **) p2;
 379
 380         struct perfcounter *tmp1, *tmp2;
 381         unsigned long totaln2 = 0;
 382         unsigned long totaln1 = 0;
 383
 384         if (!key)
 385                 return 0;
 386
 387         tmp1 = g_hash_table_lookup(n1->perf, key);
 388         if (!tmp1)
 389                 totaln1 = 0;
 390         else
 391                 totaln1 = tmp1->count;
 392
 393         tmp2 = g_hash_table_lookup(n2->perf, key);
 394         if (!tmp2)
 395                 totaln2 = 0;
 396         else
 397                 totaln2 = tmp2->count;
 398
 399         if (totaln1 < totaln2)
 400                 return 1;
 401         if (totaln1 == totaln2) {
 402                 totaln1 = n1->tid;
 403                 totaln2 = n2->tid;
 404                 if (totaln1 < totaln2)
 405                         return 1;
 406                 return -1;
 407         }
 408         return -1;
 409 }
 410
 411 void print_key_title(char *key, int line)
 412 {
 413         wattron(center, A_BOLD);
 414         mvwprintw(center, line, 1, "%s\t", key);
 415         wattroff(center, A_BOLD);
 416 }
 417
 418 void update_process_details()
 419 {
 420         unsigned long elapsed;
 421         double maxcputime;
 422         struct processtop *tmp = find_process_tid(data, selected_tid, selected_comm);
 423
 424         set_window_title(center, "Process details");
 425
 426
 427         elapsed = data->end - data->start;
 428         maxcputime = elapsed * data->cpu_table->len / 100.0;
 429
 430         print_key_title("Name", 1);
 431         wprintw(center, "%s", selected_comm);
 432         print_key_title("TID", 2);
 433         wprintw(center, "%d", selected_tid);
 434         if (!tmp) {
 435                 print_key_title("Does not exit at this time", 3);
 436                 return;
 437         }
 438
 439         print_key_title("PID", 3);
 440         wprintw(center, "%d", tmp->pid);
 441         print_key_title("PPID", 4);
 442         wprintw(center, "%d", tmp->ppid);
 443         print_key_title("CPU", 5);
 444         wprintw(center, "%1.2f %%", tmp->totalcpunsec/maxcputime);
 445 }
 446
 447 void update_perf()
 448 {
 449         int i;
 450         int nblinedisplayed = 0;
 451         int current_line = 0;
 452         struct processtop *tmp;
 453         int header_offset = 2;
 454         int perf_row = 40;
 455         struct perfcounter *perfn1, *perfn2;
 456         char *perf_key = NULL;
 457         int value;
 458         GHashTableIter iter;
 459         gpointer key;
 460
 461         set_window_title(center, "Perf Top");
 462         wattron(center, A_BOLD);
 463         mvwprintw(center, 1, 1, "PID");
 464         mvwprintw(center, 1, 11, "TID");
 465         mvwprintw(center, 1, 22, "NAME");
 466
 467         perf_row = 40;
 468         g_hash_table_iter_init(&iter, data->perf_list);
 469         while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 470                 if (perfn1->visible) {
 471                         /* + 6 to strip the "_perf_" prefix */
 472                         mvwprintw(center, 1, perf_row, "%s",
 473                                         (char *) key + 6);
 474                         perf_row += 20;
 475                 }
 476                 if (perfn1->sort) {
 477                         perf_key = (char *) key;
 478                 }
 479         }
 480
 481         wattroff(center, A_BOLD);
 482
 483         g_ptr_array_sort_with_data(data->process_table, sort_perf, perf_key);
 484
 485         for (i = 0; i < data->process_table->len &&
 486                         nblinedisplayed < max_center_lines; i++) {
 487                 tmp = g_ptr_array_index(data->process_table, i);
 488
 489                 if (current_line == selected_line) {
 490                         selected_process = tmp;
 491                         wattron(center, COLOR_PAIR(5));
 492                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 493                 }
 494
 495                 mvwprintw(center, current_line + header_offset, 1, "%d", tmp->pid);
 496                 mvwprintw(center, current_line + header_offset, 11, "%d", tmp->tid);
 497                 mvwprintw(center, current_line + header_offset, 22, "%s", tmp->comm);
 498
 499                 g_hash_table_iter_init(&iter, data->perf_list);
 500
 501                 perf_row = 40;
 502                 while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 503                         if (perfn1->visible) {
 504                                 perfn2 = g_hash_table_lookup(tmp->perf, (char *) key);
 505                                 if (perfn2)
 506                                         value = perfn2->count;
 507                                 else
 508                                         value = 0;
 509                                 mvwprintw(center, current_line + header_offset, perf_row, "%d", value);
 510                                 perf_row += 20;
 511                         }
 512                 }
 513
 514                 wattroff(center, COLOR_PAIR(5));
 515                 nblinedisplayed++;
 516                 current_line++;
 517         }
 518 }
 519
 520 void update_fileio()
 521 {
 522         int i;
 523         int offset;
 524
 525         set_window_title(center, "IO Top");
 526         wattron(center, A_BOLD);
 527         mvwprintw(center, 1, 10, "READ");
 528         mvwprintw(center, 2, 1, "bytes");
 529         mvwprintw(center, 2, 15, "bytes/sec");
 530
 531         mvwprintw(center, 1, 39, "WRITE");
 532         mvwprintw(center, 2, 33, "bytes");
 533         mvwprintw(center, 2, 45, "bytes/sec");
 534
 535         if (toggle_threads > 0) {
 536                 mvwprintw(center, 1, 60, "TGID");
 537                 mvwprintw(center, 1, 70, "PID");
 538                 offset = 8;
 539         } else {
 540                 mvwprintw(center, 1, 60, "PID(TGID)");
 541                 offset = 0;
 542         }
 543         mvwprintw(center, 1, 72 + offset, "NAME");
 544         wattroff(center, A_BOLD);
 545
 546         for (i = 3; i < LINES - 3 - 8 - 1; i++) {
 547                 mvwprintw(center, i, 1, "%d", i*1000);
 548                 mvwprintw(center, i, 15, "%dk", i);
 549                 mvwprintw(center, i, 28, "|    %d", i*2000);
 550                 mvwprintw(center, i, 45, "%dk", i*2);
 551                 if (toggle_threads > 0) {
 552                         mvwprintw(center, i, 57, "|  %d", i);
 553                         mvwprintw(center, i, 70, "%d", i);
 554                 } else {
 555                         mvwprintw(center, i, 57, "|  %d", i);
 556                 }
 557                 mvwprintw(center, i, 72 + offset, "process_%d", i);
 558         }
 559 }
 560
 561 gint sort_by_ret_desc(gconstpointer p1, gconstpointer p2)
 562 {
 563         struct processtop *n1 = *(struct processtop **)p1;
 564         struct processtop *n2 = *(struct processtop **)p2;
 565         unsigned long totaln1 = n1->iostream->ret_total;
 566         unsigned long totaln2 = n2->iostream->ret_total;
 567
 568         if (totaln1 < totaln2)
 569                 return 1;
 570         if (totaln1 == totaln2)
 571                 return 0;
 572         return -1;
 573 }
 574
 575 void update_iostream()
 576 {
 577         int i;
 578         int header_offset = 2;
 579         struct processtop *tmp;
 580         int nblinedisplayed = 0;
 581         int current_line = 0;
 582
 583         set_window_title(center, "IO Top");
 584         wattron(center, A_BOLD);
 585         mvwprintw(center, 1, 1, "READ (B/s)");
 586         mvwprintw(center, 1, 20, "WRITE (B/s)");
 587
 588         mvwprintw(center, 1, 40, "TOTAL STREAM");
 589
 590         mvwprintw(center, 1, 60, "TGID");
 591         mvwprintw(center, 1, 80, "PID");
 592
 593         mvwprintw(center, 1, 92, "NAME");
 594         wattroff(center, A_BOLD);
 595
 596         g_ptr_array_sort(data->process_table, sort_by_ret_desc);
 597
 598         for (i = list_offset; i < data->process_table->len &&
 599                         nblinedisplayed < max_center_lines; i++) {
 600                 tmp = g_ptr_array_index(data->process_table, i);
 601
 602                 if (current_line == selected_line) {
 603                         selected_process = tmp;
 604                         selected_tid = tmp->tid;
 605                         selected_comm = tmp->comm;
 606                         wattron(center, COLOR_PAIR(5));
 607                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 608                 }
 609                 /* READ (bytes/sec) */
 610                 mvwprintw(center, current_line + header_offset, 1, "%lu",
 611                                 tmp->iostream->ret_read);
 612
 613                 /* WRITE (bytes/sec) */
 614                 mvwprintw(center, current_line + header_offset, 20, "%lu",
 615                                 tmp->iostream->ret_write);
 616
 617                 /* TOTAL STREAM */
 618                 if(tmp->iostream->ret_total >= 1000000)
 619                         mvwprintw(center, current_line + header_offset, 40, "%lu MB",
 620                                         tmp->iostream->ret_total/1000000);
 621                 else if(tmp->iostream->ret_total >=1000)
 622                         mvwprintw(center, current_line + header_offset, 40, "%lu KB",
 623                                         tmp->iostream->ret_total/1000);
 624                 else
 625                         mvwprintw(center, current_line + header_offset, 40, "%lu B",
 626                                         tmp->iostream->ret_total);
 627                 /* TGID */
 628                 mvwprintw(center, current_line + header_offset, 60, "%d", tmp->pid);
 629                 /* PID */
 630                 mvwprintw(center, current_line + header_offset, 80, "%d", tmp->tid);
 631                 /* NAME */
 632                 mvwprintw(center, current_line + header_offset, 92, "%s", tmp->comm);
 633                 wattroff(center, COLOR_PAIR(5));
 634                 nblinedisplayed++;
 635                 current_line++;
 636         }
 637 }
 638
 639 void update_current_view()
 640 {
 641         sem_wait(&update_display_sem);
 642         if (!data)
 643                 return;
 644         update_header();
 645
 646         werase(center);
 647         box(center, 0, 0);
 648         switch (current_view) {
 649         case cpu:
 650                 update_cputop_display();
 651                 break;
 652         case perf:
 653                 update_perf();
 654                 break;
 655         case process_details:
 656                 update_process_details();
 657                 break;
 658         case fileio:
 659                 update_fileio();
 660                 break;
 661         case iostream:
 662                 update_iostream();
 663                 break;
 664         case tree:
 665                 update_cputop_display();
 666                 break;
 667         default:
 668                 break;
 669         }
 670         update_panels();
 671         doupdate();
 672         sem_post(&update_display_sem);
 673 }
 674
 675 void setup_perf_panel()
 676 {
 677         int size;
 678         if (!data)
 679                 return;
 680         if (perf_panel_window) {
 681                 del_panel(perf_panel);
 682                 delwin(perf_panel_window);
 683         }
 684         size = g_hash_table_size(data->perf_list);
 685         perf_panel_window = create_window(size + 2, 30, 10, 10);
 686         perf_panel = new_panel(perf_panel_window);
 687         perf_panel_visible = 0;
 688         hide_panel(perf_panel);
 689 }
 690
 691 void update_perf_panel(int line_selected, int toggle_view, int toggle_sort)
 692 {
 693         int i;
 694         struct perfcounter *perf;
 695         GList *perflist;
 696
 697         if (!data)
 698                 return;
 699
 700         werase(perf_panel_window);
 701         box(perf_panel_window, 0 , 0);
 702         set_window_title(perf_panel_window, "Perf Preferences ");
 703         wattron(perf_panel_window, A_BOLD);
 704         mvwprintw(perf_panel_window, g_hash_table_size(data->perf_list) + 1, 1, " 's' to sort");
 705         wattroff(perf_panel_window, A_BOLD);
 706
 707         if (toggle_sort == 1) {
 708                 i = 0;
 709                 perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 710                 while (perflist) {
 711                         perf = g_hash_table_lookup(data->perf_list, perflist->data);
 712                         if (i != line_selected)
 713                                 perf->sort = 0;
 714                         else
 715                                 perf->sort = 1;
 716                         i++;
 717                         perflist = g_list_next(perflist);
 718                 }
 719                 update_current_view();
 720         }
 721
 722         i = 0;
 723         perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 724         while (perflist) {
 725                 perf = g_hash_table_lookup(data->perf_list, perflist->data);
 726                 if (i == line_selected && toggle_view == 1) {
 727                         perf->visible = perf->visible == 1 ? 0:1;
 728                         update_current_view();
 729                 }
 730                 if (i == line_selected) {
 731                         wattron(perf_panel_window, COLOR_PAIR(5));
 732                         mvwhline(perf_panel_window, i + 1, 1, ' ', 30 - 2);
 733                 }
 734                 if (perf->sort == 1)
 735                         wattron(perf_panel_window, A_BOLD);
 736                 mvwprintw(perf_panel_window, i + 1, 1, "[%c] %s",
 737                                 perf->visible == 1 ? 'x' : ' ',
 738                                 (char *) perflist->data + 6);
 739                 wattroff(perf_panel_window, A_BOLD);
 740                 wattroff(perf_panel_window, COLOR_PAIR(5));
 741                 i++;
 742                 perflist = g_list_next(perflist);
 743         }
 744         update_panels();
 745         doupdate();
 746 }
 747
 748
 749 void toggle_perf_panel(void)
 750 {
 751         if (perf_panel_visible) {
 752                 hide_panel(perf_panel);
 753                 perf_panel_visible = 0;
 754         } else {
 755                 setup_perf_panel();
 756                 update_perf_panel(perf_line_selected, 0, 0);
 757                 show_panel(perf_panel);
 758                 perf_panel_visible = 1;
 759         }
 760         update_panels();
 761         doupdate();
 762 }
 763
 764 void display(unsigned int index)
 765 {
 766         last_display_index = index;
 767         currently_displayed_index = index;
 768         data = g_ptr_array_index(copies, index);
 769         if (!data)
 770                 return;
 771         max_elements = data->process_table->len;
 772         update_current_view();
 773         update_footer();
 774         update_panels();
 775         doupdate();
 776 }
 777
 778 void pause_display()
 779 {
 780         toggle_pause = 1;
 781         print_log("Pause");
 782         sem_wait(&pause_sem);
 783 }
 784
 785 void resume_display()
 786 {
 787         toggle_pause = -1;
 788         print_log("Resume");
 789         sem_post(&pause_sem);
 790 }
 791
 792 void *handle_keyboard(void *p)
 793 {
 794         int ch;
 795         while((ch = getch())) {
 796                 switch(ch) {
 797                 /* Move the cursor and scroll */
 798                 case KEY_DOWN:
 799                         if (perf_panel_visible) {
 800                                 if (perf_line_selected < g_hash_table_size(data->perf_list) - 1)
 801                                         perf_line_selected++;
 802                                 update_perf_panel(perf_line_selected, 0, 0);
 803                         } else {
 804                                 if (selected_line < (max_center_lines - 1) &&
 805                                                 selected_line < max_elements - 1) {
 806                                         selected_line++;
 807                                         selected_in_list++;
 808                                 } else if (selected_in_list < (max_elements - 1)
 809                                                 && (list_offset < (max_elements - max_center_lines))) {
 810                                         selected_in_list++;
 811                                         list_offset++;
 812                                 }
 813                                 update_current_view();
 814                         }
 815                         break;
 816                 case KEY_NPAGE:
 817                         if ((selected_line + 10 < max_center_lines - 1) &&
 818                                         ((selected_line + 10) < max_elements - 1)) {
 819                                 selected_line += 10;
 820                                 selected_in_list += 10;
 821                         } else if (max_elements > max_center_lines) {
 822                                 selected_line = max_center_lines - 1;
 823                                 if (selected_in_list + 10 < max_elements - 1) {
 824                                         selected_in_list += 10;
 825                                         list_offset += (selected_in_list - max_center_lines + 1);
 826                                 }
 827                         } else if (selected_line + 10 > max_elements) {
 828                                 selected_line = max_elements - 1;
 829                         }
 830                         update_current_view();
 831                         break;
 832                 case KEY_UP:
 833                         if (perf_panel_visible) {
 834                                 if (perf_line_selected > 0)
 835                                         perf_line_selected--;
 836                                 update_perf_panel(perf_line_selected, 0, 0);
 837                         } else {
 838                                 if (selected_line > 0) {
 839                                         selected_line--;
 840                                         selected_in_list--;
 841                                 } else if (selected_in_list > 0 && list_offset > 0) {
 842                                         selected_in_list--;
 843                                         list_offset--;
 844                                 }
 845                                 update_current_view();
 846                         }
 847                         break;
 848                 case KEY_PPAGE:
 849                         if (selected_line - 10 > 0)
 850                                 selected_line -= 10;
 851                         else
 852                                 selected_line = 0;
 853                         update_current_view();
 854                         break;
 855
 856                 /* Navigate the history with arrows */
 857                 case KEY_LEFT:
 858                         if (currently_displayed_index > 0) {
 859                                 currently_displayed_index--;
 860                                 print_log("Going back in time");
 861                         } else {
 862                                 print_log("Cannot rewind, last data is already displayed");
 863                         }
 864                         data = g_ptr_array_index(copies, currently_displayed_index);
 865                         max_elements = data->process_table->len;
 866
 867                         /* we force to pause the display when moving in time */
 868                         if (toggle_pause < 0)
 869                                 pause_display();
 870
 871                         update_current_view();
 872                         update_footer();
 873                         break;
 874                 case KEY_RIGHT:
 875                         if (currently_displayed_index < last_display_index) {
 876                                 currently_displayed_index++;
 877                                 print_log("Going forward in time");
 878                                 data = g_ptr_array_index(copies, currently_displayed_index);
 879                                 max_elements = data->process_table->len;
 880                                 update_current_view();
 881                                 update_footer();
 882                         } else {
 883                                 print_log("Manually moving forward");
 884                                 sem_post(&timer);
 885                                 /* we force to resume the refresh when moving forward */
 886                                 if (toggle_pause > 0)
 887                                         resume_display();
 888                         }
 889
 890                         break;
 891                 case ' ':
 892                         if (perf_panel_visible)
 893                                 update_perf_panel(perf_line_selected, 1, 0);
 894                         break;
 895                 case 's':
 896                         if (perf_panel_visible)
 897                                 update_perf_panel(perf_line_selected, 0, 1);
 898                         break;
 899
 900                 case 13: /* FIXME : KEY_ENTER ?? */
 901                         if (current_view == cpu) {
 902                                 current_view = process_details;
 903                         }
 904                         update_current_view();
 905                         break;
 906
 907                 case KEY_F(1):
 908                         toggle_tree *= -1;
 909                         current_view = cpu;
 910                         update_current_view();
 911                         break;
 912                 case KEY_F(2):
 913                         current_view = cpu;
 914                         update_current_view();
 915                         break;
 916                 case KEY_F(3):
 917                         current_view = perf;
 918                         toggle_tree = -1;
 919                         update_current_view();
 920                         break;
 921                 case KEY_F(4):
 922                         current_view = fileio;
 923                         toggle_tree = -1;
 924                         update_current_view();
 925                         break;
 926                 case KEY_F(5):
 927                         current_view = netio;
 928                         toggle_tree = -1;
 929                         update_current_view();
 930                         break;
 931                 case KEY_F(6):
 932                         current_view = iostream;
 933                         toggle_tree = -1;
 934                         update_current_view();
 935                         break;
 936                 case KEY_F(10):
 937                 case 'q':
 938                         reset_ncurses();
 939                         break;
 940                 case 't':
 941                         toggle_threads *= -1;
 942                         update_current_view();
 943                         break;
 944                 case 'p':
 945                         if (toggle_pause < 0) {
 946                                 pause_display();
 947                         } else {
 948                                 resume_display();
 949                         }
 950                         break;
 951                 case 'P':
 952                         toggle_perf_panel();
 953                         break;
 954                 default:
 955                         /*
 956                          * commented because it makes the list refresh in different order
 957                          * if we sort and there are equal values
 958                          if (data)
 959                          update_current_view();
 960                          */
 961                         break;
 962                 }
 963                 update_footer();
 964         }
 965         return NULL;
 966 }
 967
 968 void init_ncurses()
 969 {
 970         sem_init(&update_display_sem, 0, 1);
 971         init_screen();
 972
 973         header = create_window(7, COLS - 1, 0, 0);
 974         center = create_window(LINES - 7 - 7, COLS - 1, 7, 0);
 975         status = create_window(MAX_LOG_LINES + 2, COLS - 1, LINES - 7, 0);
 976         footer = create_window(1, COLS - 1, LINES - 1, 0);
 977
 978         print_log("Starting display");
 979
 980         main_panel = new_panel(center);
 981         setup_perf_panel();
 982
 983         current_view = cpu;
 984
 985         basic_header();
 986         update_footer();
 987
 988         pthread_create(&keyboard_thread, NULL, handle_keyboard, (void *)NULL);
 989 }
 990