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
  65 int max_center_lines;
  66
  67 pthread_t keyboard_thread;
  68
  69 void reset_ncurses()
  70 {
  71         curs_set(1);
  72         endwin();
  73         exit(0);
  74 }
  75
  76 static void handle_sigterm(int signal)
  77 {
  78         reset_ncurses();
  79 }
  80
  81 void init_screen()
  82 {
  83         initscr();
  84         noecho();
  85         halfdelay(DEFAULT_DELAY);
  86         nonl();
  87         intrflush(stdscr, false);
  88         keypad(stdscr, true);
  89         curs_set(0);
  90
  91         if (has_colors()) {
  92                 start_color();
  93                 init_pair(1, COLOR_RED, COLOR_BLACK); /* - */
  94                 init_pair(2, COLOR_GREEN, COLOR_BLACK); /* + */
  95                 init_pair(3, COLOR_BLACK, COLOR_WHITE); /* keys */
  96                 init_pair(4, COLOR_WHITE, COLOR_GREEN); /* keys activated */
  97                 init_pair(5, COLOR_WHITE, COLOR_BLUE); /* select line */
  98         }
  99         termtype = getenv("TERM");
 100         if (!strcmp(termtype, "xterm") ||  !strcmp(termtype, "xterm-color") ||
 101                         !strcmp(termtype, "vt220")) {
 102                 define_key("\033[H", KEY_HOME);
 103                 define_key("\033[F", KEY_END);
 104                 define_key("\033OP", KEY_F(1));
 105                 define_key("\033OQ", KEY_F(2));
 106                 define_key("\033OR", KEY_F(3));
 107                 define_key("\033OS", KEY_F(4));
 108                 define_key("\0330U", KEY_F(6));
 109                 define_key("\033[11~", KEY_F(1));
 110                 define_key("\033[12~", KEY_F(2));
 111                 define_key("\033[13~", KEY_F(3));
 112                 define_key("\033[14~", KEY_F(4));
 113                 define_key("\033[16~", KEY_F(6));
 114                 define_key("\033[17;2~", KEY_F(18));
 115         }
 116         signal(SIGTERM, handle_sigterm);
 117         mousemask(BUTTON1_CLICKED, NULL);
 118         refresh();
 119 }
 120
 121 WINDOW *create_window(int height, int width, int startx, int starty)
 122 {
 123         WINDOW *win;
 124         win = newwin(height, width, startx, starty);
 125         box(win, 0 , 0);
 126         wrefresh(win);
 127         return win;
 128 }
 129
 130 WINDOW *create_window_no_border(int height, int width, int startx, int starty)
 131 {
 132         WINDOW *win;
 133         win = newwin(height, width, startx, starty);
 134         wrefresh(win);
 135         return win;
 136 }
 137
 138 void print_digit(WINDOW *win, int digit)
 139 {
 140         if (digit < 0) {
 141                 wattron(win, COLOR_PAIR(1));
 142                 wprintw(win, "%d", digit);
 143                 wattroff(win, COLOR_PAIR(1));
 144         } else if (digit > 0) {
 145                 wattron(win, COLOR_PAIR(2));
 146                 wprintw(win, "+%d", digit);
 147                 wattroff(win, COLOR_PAIR(2));
 148         } else {
 149                 wprintw(win, "0");
 150         }
 151 }
 152
 153 void print_digits(WINDOW *win, int first, int second)
 154 {
 155         wprintw(win, "(");
 156         print_digit(win, first);
 157         wprintw(win, ", ");
 158         print_digit(win, second);
 159         wprintw(win, ")");
 160 }
 161
 162 void print_headers(int line, char *desc, int value, int first, int second)
 163 {
 164         wattron(header, A_BOLD);
 165         mvwprintw(header, line, 4, "%s", desc);
 166         wattroff(header, A_BOLD);
 167         mvwprintw(header, line, 16, "%d", value);
 168         wmove(header, line, 24);
 169         print_digits(header, first, second);
 170         wmove(header, line, 40);
 171 }
 172
 173 void set_window_title(WINDOW *win, char *title)
 174 {
 175         wattron(win, A_BOLD);
 176         mvwprintw(win, 0, 1, title);
 177         wattroff(win, A_BOLD);
 178 }
 179
 180 void print_log(char *str)
 181 {
 182         int i;
 183         int current_line = 1;
 184         int current_char = 1;
 185         char *tmp, *tmp2;
 186         /* rotate the line buffer */
 187         if (nb_log_lines >= MAX_LOG_LINES) {
 188                 tmp = strndup(log_lines, MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES);
 189                 tmp2 = strchr(tmp, '\n');
 190                 memset(log_lines, '\0', strlen(log_lines));
 191                 strncat(log_lines, tmp2 + 1, strlen(tmp2) - 1);
 192                 log_lines[strlen(log_lines)] = '\n';
 193                 log_lines[strlen(log_lines)] = '\0';
 194                 free(tmp);
 195         }
 196         nb_log_lines++;
 197
 198         strncat(log_lines, str, MAX_LINE_LENGTH - 1);
 199
 200         if (nb_log_lines < MAX_LOG_LINES)
 201                 log_lines[strlen(log_lines)] = '\n';
 202         log_lines[strlen(log_lines)] = '\0';
 203
 204         werase(status);
 205         box(status, 0 , 0);
 206         set_window_title(status, "Status");
 207         for (i = 0; i < strlen(log_lines); i++) {
 208                 if (log_lines[i] == '\n') {
 209                         wmove(status, ++current_line, 1);
 210                         current_char = 1;
 211                 } else {
 212                         mvwprintw(status, current_line, current_char++, "%c",
 213                                         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, "F4", "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, "Threads");
 257         mvwprintw(header, 3, 4, "FDs");
 258         wattroff(header, A_BOLD);
 259         wrefresh(header);
 260 }
 261
 262 struct tm format_timestamp(uint64_t timestamp)
 263 {
 264         struct tm tm;
 265         uint64_t ts_sec = 0, ts_nsec;
 266         time_t time_s;
 267
 268         ts_nsec = timestamp;
 269         ts_sec += ts_nsec / NSEC_PER_SEC;
 270         ts_nsec = ts_nsec % NSEC_PER_SEC;
 271
 272         time_s = (time_t) ts_sec;
 273
 274         localtime_r(&time_s, &tm);
 275
 276         return tm;
 277 }
 278
 279 void update_header()
 280 {
 281         struct tm start, end;
 282         uint64_t ts_nsec_start, ts_nsec_end;
 283
 284         ts_nsec_start = data->start % NSEC_PER_SEC;
 285         start = format_timestamp(data->start);
 286
 287         ts_nsec_end = data->end % NSEC_PER_SEC;
 288         end = format_timestamp(data->end);
 289
 290         werase(header);
 291         box(header, 0 , 0);
 292         set_window_title(header, "Statistics for interval ");
 293         wattron(header, A_BOLD);
 294
 295         wprintw(header, "[%02d:%02d:%02d.%09" PRIu64 ", %02d:%02d:%02d.%09" PRIu64 "[",
 296                 start.tm_hour, start.tm_min, start.tm_sec, ts_nsec_start,
 297                 end.tm_hour, end.tm_min, end.tm_sec, ts_nsec_end);
 298         mvwprintw(header, 1, 4, "CPUs");
 299         wattroff(header, A_BOLD);
 300         wprintw(header, "\t%d\t(max/cpu : %0.2f%)", data->cpu_table->len,
 301                         100.0/data->cpu_table->len);
 302         print_headers(2, "Threads", data->nbthreads, data->nbnewthreads,
 303                         -1*(data->nbdeadthreads));
 304         print_headers(3, "FDs", data->nbfiles, data->nbnewfiles,
 305                         -1*(data->nbclosedfiles));
 306         mvwprintw(header, 3, 43, "N/A kbytes/sec");
 307         wrefresh(header);
 308 }
 309
 310 gint sort_by_cpu_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->totalcpunsec;
 315         unsigned long totaln2 = n2->totalcpunsec;
 316
 317         if (totaln1 < totaln2)
 318                 return 1;
 319         if (totaln1 == totaln2)
 320                 return 0;
 321         return -1;
 322 }
 323
 324 gint sort_by_cpu_group_by_threads_desc(gconstpointer p1, gconstpointer p2)
 325 {
 326         struct processtop *n1 = *(struct processtop **)p1;
 327         struct processtop *n2 = *(struct processtop **)p2;
 328         unsigned long totaln1 = n1->threadstotalcpunsec;
 329         unsigned long totaln2 = n2->threadstotalcpunsec;
 330
 331         if (totaln1 < totaln2)
 332                 return 1;
 333         if (totaln1 == totaln2)
 334                 return 0;
 335         return -1;
 336 }
 337
 338 void update_cputop_display()
 339 {
 340         int i;
 341         int header_offset = 2;
 342         struct processtop *tmp;
 343         unsigned long elapsed;
 344         double maxcputime;
 345         int nblinedisplayed = 0;
 346         int current_line = 0;
 347
 348         elapsed = data->end - data->start;
 349         maxcputime = elapsed * data->cpu_table->len / 100.0;
 350
 351         g_ptr_array_sort(data->process_table, sort_by_cpu_desc);
 352
 353         set_window_title(center, "CPU Top");
 354         wattron(center, A_BOLD);
 355         mvwprintw(center, 1, 1, "CPU(%)");
 356         mvwprintw(center, 1, 12, "TGID");
 357         mvwprintw(center, 1, 22, "PID");
 358         mvwprintw(center, 1, 32, "NAME");
 359         wattroff(center, A_BOLD);
 360
 361         max_center_lines = LINES - 5 - 7 - 1 - header_offset;
 362
 363         /* iterate the process (thread) list */
 364         for (i = list_offset; i < data->process_table->len &&
 365                         nblinedisplayed < max_center_lines; i++) {
 366                 tmp = g_ptr_array_index(data->process_table, i);
 367
 368                 if (current_line == selected_line) {
 369                         selected_process = tmp;
 370                         selected_tid = tmp->tid;
 371                         selected_comm = tmp->comm;
 372                         wattron(center, COLOR_PAIR(5));
 373                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 374                 }
 375                 /* CPU(%) */
 376                 mvwprintw(center, current_line + header_offset, 1, "%1.2f",
 377                                 tmp->totalcpunsec / maxcputime);
 378                 /* TGID */
 379                 mvwprintw(center, current_line + header_offset, 12, "%d", tmp->pid);
 380                 /* PID */
 381                 mvwprintw(center, current_line + header_offset, 22, "%d", tmp->tid);
 382                 /* NAME */
 383                 mvwprintw(center, current_line + header_offset, 32, "%s", tmp->comm);
 384                 wattroff(center, COLOR_PAIR(5));
 385                 nblinedisplayed++;
 386                 current_line++;
 387         }
 388 }
 389
 390 gint sort_perf(gconstpointer p1, gconstpointer p2, gpointer key)
 391 {
 392         struct processtop *n1 = *(struct processtop **) p1;
 393         struct processtop *n2 = *(struct processtop **) p2;
 394
 395         struct perfcounter *tmp1, *tmp2;
 396         unsigned long totaln2 = 0;
 397         unsigned long totaln1 = 0;
 398
 399         if (!key)
 400                 return 0;
 401
 402         tmp1 = g_hash_table_lookup(n1->perf, key);
 403         if (!tmp1)
 404                 totaln1 = 0;
 405         else
 406                 totaln1 = tmp1->count;
 407
 408         tmp2 = g_hash_table_lookup(n2->perf, key);
 409         if (!tmp2)
 410                 totaln2 = 0;
 411         else
 412                 totaln2 = tmp2->count;
 413
 414         if (totaln1 < totaln2)
 415                 return 1;
 416         if (totaln1 == totaln2) {
 417                 totaln1 = n1->tid;
 418                 totaln2 = n2->tid;
 419                 if (totaln1 < totaln2)
 420                         return 1;
 421                 return -1;
 422         }
 423         return -1;
 424 }
 425
 426 void print_key_title(char *key, int line)
 427 {
 428         wattron(center, A_BOLD);
 429         mvwprintw(center, line, 1, "%s\t", key);
 430         wattroff(center, A_BOLD);
 431 }
 432
 433 void update_process_details()
 434 {
 435         unsigned long elapsed;
 436         double maxcputime;
 437         struct processtop *tmp = find_process_tid(data, selected_tid, selected_comm);
 438         struct files *file_tmp;
 439         int i, j = 0;
 440
 441         set_window_title(center, "Process details");
 442
 443
 444         elapsed = data->end - data->start;
 445         maxcputime = elapsed * data->cpu_table->len / 100.0;
 446
 447         print_key_title("Name", 1);
 448         wprintw(center, "%s", selected_comm);
 449         print_key_title("TID", 2);
 450         wprintw(center, "%d", selected_tid);
 451         if (!tmp) {
 452                 print_key_title("Does not exit at this time", 3);
 453                 return;
 454         }
 455
 456         print_key_title("PID", 3);
 457         wprintw(center, "%d", tmp->pid);
 458         print_key_title("PPID", 4);
 459         wprintw(center, "%d", tmp->ppid);
 460         print_key_title("CPU", 5);
 461         wprintw(center, "%1.2f %%", tmp->totalcpunsec/maxcputime);
 462
 463         print_key_title("READ B/s", 6);
 464         wprintw(center, "%d", tmp->fileread);
 465
 466         print_key_title("WRITE B/s", 7);
 467         wprintw(center, "%d", tmp->filewrite);
 468
 469         wattron(center, A_BOLD);
 470         mvwprintw(center, 8, 1, "FD");
 471         mvwprintw(center, 8, 12, "READ");
 472         mvwprintw(center, 8, 22, "WRITE");
 473         mvwprintw(center, 8, 32, "FILENAME");
 474         wattroff(center, A_BOLD);
 475
 476         for (i = 0; i < tmp->process_files_table->len; i++) {
 477                 file_tmp = get_file(tmp, i);
 478                 if (file_tmp != NULL) {
 479                         mvwprintw(center, 9 + j, 1, "%d", i);
 480                         mvwprintw(center, 9 + j, 12, "%d", file_tmp->read);
 481                         mvwprintw(center, 9 + j, 22, "%d", file_tmp->write);
 482                         mvwprintw(center, 9 + j, 32, "%s", file_tmp->name);
 483                         j++;
 484                 }
 485         }
 486 }
 487
 488 void update_perf()
 489 {
 490         int i;
 491         int nblinedisplayed = 0;
 492         int current_line = 0;
 493         struct processtop *tmp;
 494         int header_offset = 2;
 495         int perf_row = 40;
 496         struct perfcounter *perfn1, *perfn2;
 497         char *perf_key = NULL;
 498         int value;
 499         GHashTableIter iter;
 500         gpointer key;
 501
 502         set_window_title(center, "Perf Top");
 503         wattron(center, A_BOLD);
 504         mvwprintw(center, 1, 1, "PID");
 505         mvwprintw(center, 1, 11, "TID");
 506         mvwprintw(center, 1, 22, "NAME");
 507
 508         perf_row = 40;
 509         g_hash_table_iter_init(&iter, data->perf_list);
 510         while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 511                 if (perfn1->visible) {
 512                         /* + 5 to strip the "perf_" prefix */
 513                         mvwprintw(center, 1, perf_row, "%s",
 514                                         (char *) key + 5);
 515                         perf_row += 20;
 516                 }
 517                 if (perfn1->sort) {
 518                         perf_key = (char *) key;
 519                 }
 520         }
 521
 522         wattroff(center, A_BOLD);
 523
 524         g_ptr_array_sort_with_data(data->process_table, sort_perf, perf_key);
 525
 526         for (i = 0; i < data->process_table->len &&
 527                         nblinedisplayed < max_center_lines; i++) {
 528                 tmp = g_ptr_array_index(data->process_table, i);
 529
 530                 if (current_line == selected_line) {
 531                         selected_process = tmp;
 532                         selected_tid = tmp->tid;
 533                         selected_comm = tmp->comm;
 534                         wattron(center, COLOR_PAIR(5));
 535                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 536                 }
 537
 538                 mvwprintw(center, current_line + header_offset, 1, "%d", tmp->pid);
 539                 mvwprintw(center, current_line + header_offset, 11, "%d", tmp->tid);
 540                 mvwprintw(center, current_line + header_offset, 22, "%s", tmp->comm);
 541
 542                 g_hash_table_iter_init(&iter, data->perf_list);
 543
 544                 perf_row = 40;
 545                 while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 546                         if (perfn1->visible) {
 547                                 perfn2 = g_hash_table_lookup(tmp->perf, (char *) key);
 548                                 if (perfn2)
 549                                         value = perfn2->count;
 550                                 else
 551                                         value = 0;
 552                                 mvwprintw(center, current_line + header_offset,
 553                                                 perf_row, "%d", value);
 554                                 perf_row += 20;
 555                         }
 556                 }
 557
 558                 wattroff(center, COLOR_PAIR(5));
 559                 nblinedisplayed++;
 560                 current_line++;
 561         }
 562 }
 563
 564 gint sort_by_ret_desc(gconstpointer p1, gconstpointer p2)
 565 {
 566         struct processtop *n1 = *(struct processtop **)p1;
 567         struct processtop *n2 = *(struct processtop **)p2;
 568
 569         unsigned long totaln1 = n1->totalfileread + n1->totalfilewrite;
 570         unsigned long totaln2 = n2->totalfileread + n2->totalfilewrite;
 571
 572         if (totaln1 < totaln2)
 573                 return 1;
 574         if (totaln1 == totaln2)
 575                 return 0;
 576         return -1;
 577 }
 578
 579 void update_iostream()
 580 {
 581         int i;
 582         int header_offset = 2;
 583         struct processtop *tmp;
 584         int nblinedisplayed = 0;
 585         int current_line = 0;
 586         int total = 0;
 587
 588         set_window_title(center, "IO Top");
 589         wattron(center, A_BOLD);
 590         mvwprintw(center, 1, 1, "READ (B/s)");
 591         mvwprintw(center, 1, 20, "WRITE (B/s)");
 592
 593         mvwprintw(center, 1, 40, "TOTAL STREAM");
 594
 595         mvwprintw(center, 1, 60, "TGID");
 596         mvwprintw(center, 1, 80, "PID");
 597
 598         mvwprintw(center, 1, 92, "NAME");
 599         wattroff(center, A_BOLD);
 600
 601         g_ptr_array_sort(data->process_table, sort_by_ret_desc);
 602
 603         for (i = list_offset; i < data->process_table->len &&
 604                         nblinedisplayed < max_center_lines; i++) {
 605                 tmp = g_ptr_array_index(data->process_table, i);
 606
 607                 if (current_line == selected_line) {
 608                         selected_process = tmp;
 609                         selected_tid = tmp->tid;
 610                         selected_comm = tmp->comm;
 611                         wattron(center, COLOR_PAIR(5));
 612                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 613                 }
 614
 615                 /* READ (bytes/sec) */
 616                 mvwprintw(center, current_line + header_offset, 1, "%lu",
 617                         tmp->fileread);
 618
 619                 /* WRITE (bytes/sec) */
 620                 mvwprintw(center, current_line + header_offset, 20, "%lu",
 621                         tmp->filewrite);
 622
 623                 /* TOTAL STREAM */
 624                 total = tmp->totalfileread + tmp->totalfilewrite;
 625
 626                 if (total >= 1000000)
 627                         mvwprintw(center, current_line + header_offset, 40, "%lu MB",
 628                                         total/1000000);
 629                 else if (total >= 1000)
 630                         mvwprintw(center, current_line + header_offset, 40, "%lu KB",
 631                                         total/1000);
 632                 else
 633                         mvwprintw(center, current_line + header_offset, 40, "%lu B",
 634                                         total);
 635
 636                 /* TGID */
 637                 mvwprintw(center, current_line + header_offset, 60, "%d", tmp->pid);
 638                 /* PID */
 639                 mvwprintw(center, current_line + header_offset, 80, "%d", tmp->tid);
 640                 /* NAME */
 641                 mvwprintw(center, current_line + header_offset, 92, "%s", tmp->comm);
 642                 wattroff(center, COLOR_PAIR(5));
 643                 nblinedisplayed++;
 644                 current_line++;
 645         }
 646 }
 647
 648 void update_current_view()
 649 {
 650         sem_wait(&update_display_sem);
 651         if (!data)
 652                 return;
 653         update_header();
 654
 655         werase(center);
 656         box(center, 0, 0);
 657         switch (current_view) {
 658         case cpu:
 659                 update_cputop_display();
 660                 break;
 661         case perf:
 662                 update_perf();
 663                 break;
 664         case process_details:
 665                 update_process_details();
 666                 break;
 667         case iostream:
 668                 update_iostream();
 669                 break;
 670         case tree:
 671                 update_cputop_display();
 672                 break;
 673         default:
 674                 break;
 675         }
 676         update_panels();
 677         doupdate();
 678         sem_post(&update_display_sem);
 679 }
 680
 681 void setup_perf_panel()
 682 {
 683         int size;
 684         if (!data)
 685                 return;
 686         if (perf_panel_window) {
 687                 del_panel(perf_panel);
 688                 delwin(perf_panel_window);
 689         }
 690         size = g_hash_table_size(data->perf_list);
 691         perf_panel_window = create_window(size + 2, 30, 10, 10);
 692         perf_panel = new_panel(perf_panel_window);
 693         perf_panel_visible = 0;
 694         hide_panel(perf_panel);
 695 }
 696
 697 void update_perf_panel(int line_selected, int toggle_view, int toggle_sort)
 698 {
 699         int i;
 700         struct perfcounter *perf;
 701         GList *perflist;
 702
 703         if (!data)
 704                 return;
 705
 706         werase(perf_panel_window);
 707         box(perf_panel_window, 0 , 0);
 708         set_window_title(perf_panel_window, "Perf Preferences ");
 709         wattron(perf_panel_window, A_BOLD);
 710         mvwprintw(perf_panel_window, g_hash_table_size(data->perf_list) + 1, 1,
 711                         " 's' to sort");
 712         wattroff(perf_panel_window, A_BOLD);
 713
 714         if (toggle_sort == 1) {
 715                 i = 0;
 716                 perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 717                 while (perflist) {
 718                         perf = g_hash_table_lookup(data->perf_list, perflist->data);
 719                         if (i != line_selected)
 720                                 perf->sort = 0;
 721                         else
 722                                 perf->sort = 1;
 723                         i++;
 724                         perflist = g_list_next(perflist);
 725                 }
 726                 update_current_view();
 727         }
 728
 729         i = 0;
 730         perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 731         while (perflist) {
 732                 perf = g_hash_table_lookup(data->perf_list, perflist->data);
 733                 if (i == line_selected && toggle_view == 1) {
 734                         perf->visible = perf->visible == 1 ? 0:1;
 735                         update_current_view();
 736                 }
 737                 if (i == line_selected) {
 738                         wattron(perf_panel_window, COLOR_PAIR(5));
 739                         mvwhline(perf_panel_window, i + 1, 1, ' ', 30 - 2);
 740                 }
 741                 if (perf->sort == 1)
 742                         wattron(perf_panel_window, A_BOLD);
 743                 mvwprintw(perf_panel_window, i + 1, 1, "[%c] %s",
 744                                 perf->visible == 1 ? 'x' : ' ',
 745                                 (char *) perflist->data + 5);
 746                 wattroff(perf_panel_window, A_BOLD);
 747                 wattroff(perf_panel_window, COLOR_PAIR(5));
 748                 i++;
 749                 perflist = g_list_next(perflist);
 750         }
 751         update_panels();
 752         doupdate();
 753 }
 754
 755
 756 void toggle_perf_panel(void)
 757 {
 758         if (perf_panel_visible) {
 759                 hide_panel(perf_panel);
 760                 perf_panel_visible = 0;
 761         } else {
 762                 setup_perf_panel();
 763                 update_perf_panel(perf_line_selected, 0, 0);
 764                 show_panel(perf_panel);
 765                 perf_panel_visible = 1;
 766         }
 767         update_panels();
 768         doupdate();
 769 }
 770
 771 void display(unsigned int index)
 772 {
 773         last_display_index = index;
 774         currently_displayed_index = index;
 775         data = g_ptr_array_index(copies, index);
 776         if (!data)
 777                 return;
 778         max_elements = data->process_table->len;
 779         update_current_view();
 780         update_footer();
 781         update_panels();
 782         doupdate();
 783 }
 784
 785 void pause_display()
 786 {
 787         toggle_pause = 1;
 788         print_log("Pause");
 789         sem_wait(&pause_sem);
 790 }
 791
 792 void resume_display()
 793 {
 794         toggle_pause = -1;
 795         print_log("Resume");
 796         sem_post(&pause_sem);
 797 }
 798
 799 void *handle_keyboard(void *p)
 800 {
 801         int ch;
 802         while((ch = getch())) {
 803                 switch(ch) {
 804                 /* Move the cursor and scroll */
 805                 case KEY_DOWN:
 806                         if (perf_panel_visible) {
 807                                 if (perf_line_selected < g_hash_table_size(data->perf_list) - 1)
 808                                         perf_line_selected++;
 809                                 update_perf_panel(perf_line_selected, 0, 0);
 810                         } else {
 811                                 if (selected_line < (max_center_lines - 1) &&
 812                                                 selected_line < max_elements - 1) {
 813                                         selected_line++;
 814                                         selected_in_list++;
 815                                 } else if (selected_in_list < (max_elements - 1)
 816                                                 && (list_offset < (max_elements - max_center_lines))) {
 817                                         selected_in_list++;
 818                                         list_offset++;
 819                                 }
 820                                 update_current_view();
 821                         }
 822                         break;
 823                 case KEY_NPAGE:
 824                         break;
 825                 case KEY_UP:
 826                         if (perf_panel_visible) {
 827                                 if (perf_line_selected > 0)
 828                                         perf_line_selected--;
 829                                 update_perf_panel(perf_line_selected, 0, 0);
 830                         } else {
 831                                 if (selected_line > 0) {
 832                                         selected_line--;
 833                                         selected_in_list--;
 834                                 } else if (selected_in_list > 0 && list_offset > 0) {
 835                                         selected_in_list--;
 836                                         list_offset--;
 837                                 }
 838                                 update_current_view();
 839                         }
 840                         break;
 841                 case KEY_PPAGE:
 842                         break;
 843
 844                 /* Navigate the history with arrows */
 845                 case KEY_LEFT:
 846                         if (currently_displayed_index > 0) {
 847                                 currently_displayed_index--;
 848                                 print_log("Going back in time");
 849                         } else {
 850                                 print_log("Cannot rewind, last data is already displayed");
 851                         }
 852                         data = g_ptr_array_index(copies, currently_displayed_index);
 853                         max_elements = data->process_table->len;
 854
 855                         /* we force to pause the display when moving in time */
 856                         if (toggle_pause < 0)
 857                                 pause_display();
 858
 859                         update_current_view();
 860                         update_footer();
 861                         break;
 862                 case KEY_RIGHT:
 863                         if (currently_displayed_index < last_display_index) {
 864                                 currently_displayed_index++;
 865                                 print_log("Going forward in time");
 866                                 data = g_ptr_array_index(copies, currently_displayed_index);
 867                                 max_elements = data->process_table->len;
 868                                 update_current_view();
 869                                 update_footer();
 870                         } else {
 871                                 print_log("Manually moving forward");
 872                                 sem_post(&timer);
 873                                 /* we force to resume the refresh when moving forward */
 874                                 if (toggle_pause > 0)
 875                                         resume_display();
 876                         }
 877
 878                         break;
 879                 case ' ':
 880                         if (perf_panel_visible)
 881                                 update_perf_panel(perf_line_selected, 1, 0);
 882                         break;
 883                 case 's':
 884                         if (perf_panel_visible)
 885                                 update_perf_panel(perf_line_selected, 0, 1);
 886                         break;
 887
 888                 case 13: /* FIXME : KEY_ENTER ?? */
 889                         if (current_view != process_details) {
 890                                 previous_view = current_view;
 891                                 current_view = process_details;
 892                         } else {
 893                                 current_view = previous_view;
 894                                 previous_view = process_details;
 895                         }
 896                         update_current_view();
 897                         break;
 898
 899                 case KEY_F(1):
 900                         current_view = cpu;
 901                         selected_line = 0;
 902                         update_current_view();
 903                         break;
 904                 case KEY_F(2):
 905                         current_view = cpu;
 906                         selected_line = 0;
 907                         update_current_view();
 908                         break;
 909                 case KEY_F(3):
 910                         current_view = perf;
 911                         selected_line = 0;
 912                         update_current_view();
 913                         break;
 914                 case KEY_F(4):
 915                         current_view = iostream;
 916                         selected_line = 0;
 917                         update_current_view();
 918                         break;
 919                 case KEY_F(10):
 920                 case 'q':
 921                         reset_ncurses();
 922                         break;
 923                 case 't':
 924                         toggle_threads *= -1;
 925                         update_current_view();
 926                         break;
 927                 case 'p':
 928                         if (toggle_pause < 0) {
 929                                 pause_display();
 930                         } else {
 931                                 resume_display();
 932                         }
 933                         break;
 934                 case 'P':
 935                         toggle_perf_panel();
 936                         break;
 937                 default:
 938                         if (data)
 939                                 update_current_view();
 940                         break;
 941                 }
 942                 update_footer();
 943         }
 944         return NULL;
 945 }
 946
 947 void init_ncurses()
 948 {
 949         sem_init(&update_display_sem, 0, 1);
 950         init_screen();
 951
 952         header = create_window(5, COLS - 1, 0, 0);
 953         center = create_window(LINES - 5 - 7, COLS - 1, 5, 0);
 954         status = create_window(MAX_LOG_LINES + 2, COLS - 1, LINES - 7, 0);
 955         footer = create_window(1, COLS - 1, LINES - 1, 0);
 956
 957         print_log("Starting display");
 958
 959         main_panel = new_panel(center);
 960         setup_perf_panel();
 961
 962         current_view = cpu;
 963
 964         basic_header();
 965         update_footer();
 966
 967         pthread_create(&keyboard_thread, NULL, handle_keyboard, (void *)NULL);
 968 }
 969