src/cursesdisplay.c

   1 /*
   2  * Copyright (C) 2011 Julien Desfossez
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <signal.h>
  21 #include <string.h>
  22 #include <ncurses.h>
  23 #include <panel.h>
  24 #include <pthread.h>
  25 #include <semaphore.h>
  26
  27 #include "cursesdisplay.h"
  28 #include "lttngtoptypes.h"
  29 #include "iostreamtop.h"
  30 #include "common.h"
  31
  32 #define DEFAULT_DELAY 15
  33 #define MAX_LINE_LENGTH 50
  34 #define MAX_LOG_LINES 4
  35
  36 /* to prevent concurrent updates of the different windows */
  37 sem_t update_display_sem;
  38
  39 char *termtype;
  40 WINDOW *footer, *header, *center, *status;
  41 WINDOW *perf_panel_window = NULL;
  42 PANEL *perf_panel, *main_panel;
  43
  44 int perf_panel_visible = 0;
  45 int perf_line_selected = 0;
  46
  47 int last_display_index, currently_displayed_index;
  48
  49 struct processtop *selected_process = NULL;
  50 int selected_tid;
  51 char *selected_comm;
  52 int selected_ret;
  53
  54 int selected_line = 0; /* select bar position */
  55 int selected_in_list = 0; /* selection relative to the whole list */
  56 int list_offset = 0; /* first index in the list to display (scroll) */
  57 int nb_log_lines = 0;
  58 char log_lines[MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES];
  59
  60 int max_elements = 80;
  61
  62 int toggle_threads = -1;
  63 int toggle_pause = -1;
  64 int toggle_tree = -1;
  65
  66 int max_center_lines;
  67
  68 pthread_t keyboard_thread;
  69
  70 void reset_ncurses()
  71 {
  72         curs_set(1);
  73         endwin();
  74         exit(0);
  75 }
  76
  77 static void handle_sigterm(int signal)
  78 {
  79         reset_ncurses();
  80 }
  81
  82 void init_screen()
  83 {
  84         initscr();
  85         noecho();
  86         halfdelay(DEFAULT_DELAY);
  87         nonl();
  88         intrflush(stdscr, false);
  89         keypad(stdscr, true);
  90         curs_set(0);
  91
  92         if (has_colors()) {
  93                 start_color();
  94                 init_pair(1, COLOR_RED, COLOR_BLACK); /* - */
  95                 init_pair(2, COLOR_GREEN, COLOR_BLACK); /* + */
  96                 init_pair(3, COLOR_BLACK, COLOR_WHITE); /* keys */
  97                 init_pair(4, COLOR_WHITE, COLOR_GREEN); /* keys activated */
  98                 init_pair(5, COLOR_WHITE, COLOR_BLUE); /* select line */
  99         }
 100         termtype = getenv("TERM");
 101         if (!strcmp(termtype, "xterm") ||  !strcmp(termtype, "xterm-color") ||
 102                         !strcmp(termtype, "vt220")) {
 103                 define_key("\033[H", KEY_HOME);
 104                 define_key("\033[F", KEY_END);
 105                 define_key("\033OP", KEY_F(1));
 106                 define_key("\033OQ", KEY_F(2));
 107                 define_key("\033OR", KEY_F(3));
 108                 define_key("\033OS", KEY_F(4));
 109                 define_key("\0330U", KEY_F(6));
 110                 define_key("\033[11~", KEY_F(1));
 111                 define_key("\033[12~", KEY_F(2));
 112                 define_key("\033[13~", KEY_F(3));
 113                 define_key("\033[14~", KEY_F(4));
 114                 define_key("\033[16~", KEY_F(6));
 115                 define_key("\033[17;2~", KEY_F(18));
 116         }
 117         signal(SIGTERM, handle_sigterm);
 118         mousemask(BUTTON1_CLICKED, NULL);
 119         refresh();
 120 }
 121
 122 WINDOW *create_window(int height, int width, int startx, int starty)
 123 {
 124         WINDOW *win;
 125         win = newwin(height, width, startx, starty);
 126         box(win, 0 , 0);
 127         wrefresh(win);
 128         return win;
 129 }
 130
 131 WINDOW *create_window_no_border(int height, int width, int startx, int starty)
 132 {
 133         WINDOW *win;
 134         win = newwin(height, width, startx, starty);
 135         wrefresh(win);
 136         return win;
 137 }
 138
 139 void print_digit(WINDOW *win, int digit)
 140 {
 141         if (digit < 0) {
 142                 wattron(win, COLOR_PAIR(1));
 143                 wprintw(win, "%d", digit);
 144                 wattroff(win, COLOR_PAIR(1));
 145         } else if (digit > 0) {
 146                 wattron(win, COLOR_PAIR(2));
 147                 wprintw(win, "+%d", digit);
 148                 wattroff(win, COLOR_PAIR(2));
 149         } else {
 150                 wprintw(win, "0");
 151         }
 152 }
 153
 154 void print_digits(WINDOW *win, int first, int second)
 155 {
 156         wprintw(win, "(");
 157         print_digit(win, first);
 158         wprintw(win, ", ");
 159         print_digit(win, second);
 160         wprintw(win, ")");
 161 }
 162
 163 void print_headers(int line, char *desc, int value, int first, int second)
 164 {
 165         wattron(header, A_BOLD);
 166         mvwprintw(header, line, 4, "%s", desc);
 167         wattroff(header, A_BOLD);
 168         mvwprintw(header, line, 16, "%d", value);
 169         wmove(header, line, 24);
 170         print_digits(header, first, second);
 171         wmove(header, line, 40);
 172 }
 173
 174 void set_window_title(WINDOW *win, char *title)
 175 {
 176         wattron(win, A_BOLD);
 177         mvwprintw(win, 0, 1, title);
 178         wattroff(win, A_BOLD);
 179 }
 180
 181 void print_log(char *str)
 182 {
 183         int i;
 184         int current_line = 1;
 185         int current_char = 1;
 186         char *tmp, *tmp2;
 187         /* rotate the line buffer */
 188         if (nb_log_lines >= MAX_LOG_LINES) {
 189                 tmp = strndup(log_lines, MAX_LINE_LENGTH * MAX_LOG_LINES + MAX_LOG_LINES);
 190                 tmp2 = strchr(tmp, '\n');
 191                 memset(log_lines, '\0', strlen(log_lines));
 192                 strncat(log_lines, tmp2 + 1, strlen(tmp2) - 1);
 193                 log_lines[strlen(log_lines)] = '\n';
 194                 log_lines[strlen(log_lines)] = '\0';
 195                 free(tmp);
 196         }
 197         nb_log_lines++;
 198
 199         strncat(log_lines, str, MAX_LINE_LENGTH - 1);
 200
 201         if (nb_log_lines < MAX_LOG_LINES)
 202                 log_lines[strlen(log_lines)] = '\n';
 203         log_lines[strlen(log_lines)] = '\0';
 204
 205         werase(status);
 206         box(status, 0 , 0);
 207         set_window_title(status, "Status");
 208         for (i = 0; i < strlen(log_lines); i++) {
 209                 if (log_lines[i] == '\n') {
 210                         wmove(status, ++current_line, 1);
 211                         current_char = 1;
 212                 } else {
 213                         mvwprintw(status, current_line, current_char++, "%c",
 214                                         log_lines[i]);
 215                 }
 216         }
 217         wrefresh(status);
 218 }
 219
 220 void print_key(WINDOW *win, char *key, char *desc, int toggle)
 221 {
 222         int pair;
 223         if (toggle > 0)
 224                 pair = 4;
 225         else
 226                 pair = 3;
 227         wattron(win, COLOR_PAIR(pair));
 228         wprintw(footer, "%s", key);
 229         wattroff(win, COLOR_PAIR(pair));
 230         wprintw(footer, ":%s", desc);
 231 }
 232
 233 void update_footer()
 234 {
 235         sem_wait(&update_display_sem);
 236         werase(footer);
 237         wmove(footer, 1, 1);
 238         print_key(footer, "F2", "CPUtop  ", current_view == cpu);
 239         print_key(footer, "F3", "PerfTop  ", current_view == perf);
 240         print_key(footer, "F4", "IOTop  ", current_view == iostream);
 241         print_key(footer, "Enter", "Details  ", current_view == process_details);
 242         print_key(footer, "q", "Quit | ", 0);
 243         print_key(footer, "P", "Perf Pref  ", 0);
 244         print_key(footer, "p", "Pause  ", toggle_pause);
 245
 246         wrefresh(footer);
 247         sem_post(&update_display_sem);
 248 }
 249
 250 void basic_header()
 251 {
 252         werase(header);
 253         box(header, 0 , 0);
 254         set_window_title(header, "Statistics for interval [gathering data...[");
 255         wattron(header, A_BOLD);
 256         mvwprintw(header, 1, 4, "CPUs");
 257         mvwprintw(header, 2, 4, "Threads");
 258         mvwprintw(header, 3, 4, "Files");
 259         mvwprintw(header, 4, 4, "Network");
 260         wattroff(header, A_BOLD);
 261         wrefresh(header);
 262 }
 263
 264 void update_header()
 265 {
 266         werase(header);
 267         box(header, 0 , 0);
 268         set_window_title(header, "Statistics for interval ");
 269         wattron(header, A_BOLD);
 270         /*
 271         wprintw(header, "[%lu.%lu, %lu.%lu[",
 272                         data->start.tv_sec, data->start.tv_nsec,
 273                         data->end.tv_sec, data->end.tv_nsec);
 274                         */
 275         wprintw(header, "[%lu, %lu[",
 276             data->start,
 277             data->end);
 278         mvwprintw(header, 1, 4, "CPUs");
 279         wattroff(header, A_BOLD);
 280         wprintw(header, "\t%d\t(max/cpu : %0.2f%)", data->cpu_table->len,
 281                         100.0/data->cpu_table->len);
 282         print_headers(2, "Threads", data->nbthreads, data->nbnewthreads,
 283                         -1*(data->nbdeadthreads));
 284         print_headers(3, "Files", data->nbfiles, data->nbnewfiles,
 285                         -1*(data->nbclosedfiles));
 286         mvwprintw(header, 3, 43, "N/A kbytes/sec");
 287         print_headers(4, "Network", 0, 0, 0);
 288         mvwprintw(header, 4, 43, "N/A Mbytes/sec");
 289         wrefresh(header);
 290 }
 291
 292 gint sort_by_cpu_desc(gconstpointer p1, gconstpointer p2)
 293 {
 294         struct processtop *n1 = *(struct processtop **)p1;
 295         struct processtop *n2 = *(struct processtop **)p2;
 296         unsigned long totaln1 = n1->totalcpunsec;
 297         unsigned long totaln2 = n2->totalcpunsec;
 298
 299         if (totaln1 < totaln2)
 300                 return 1;
 301         if (totaln1 == totaln2)
 302                 return 0;
 303         return -1;
 304 }
 305
 306 gint sort_by_cpu_group_by_threads_desc(gconstpointer p1, gconstpointer p2)
 307 {
 308         struct processtop *n1 = *(struct processtop **)p1;
 309         struct processtop *n2 = *(struct processtop **)p2;
 310         unsigned long totaln1 = n1->threadstotalcpunsec;
 311         unsigned long totaln2 = n2->threadstotalcpunsec;
 312
 313         if (totaln1 < totaln2)
 314                 return 1;
 315         if (totaln1 == totaln2)
 316                 return 0;
 317         return -1;
 318 }
 319
 320 void update_cputop_display()
 321 {
 322         int i;
 323         int header_offset = 2;
 324         struct processtop *tmp;
 325         unsigned long elapsed;
 326         double maxcputime;
 327         int nblinedisplayed = 0;
 328         int current_line = 0;
 329
 330         elapsed = data->end - data->start;
 331         maxcputime = elapsed * data->cpu_table->len / 100.0;
 332
 333         g_ptr_array_sort(data->process_table, sort_by_cpu_desc);
 334
 335         set_window_title(center, "CPU Top");
 336         wattron(center, A_BOLD);
 337         mvwprintw(center, 1, 1, "CPU(%)");
 338         mvwprintw(center, 1, 12, "TGID");
 339         mvwprintw(center, 1, 22, "PID");
 340         mvwprintw(center, 1, 32, "NAME");
 341         wattroff(center, A_BOLD);
 342
 343         max_center_lines = LINES - 7 - 7 - 1 - header_offset;
 344
 345         /* iterate the process (thread) list */
 346         for (i = list_offset; i < data->process_table->len &&
 347                         nblinedisplayed < max_center_lines; i++) {
 348                 tmp = g_ptr_array_index(data->process_table, i);
 349
 350                 if (current_line == selected_line) {
 351                         selected_process = tmp;
 352                         selected_tid = tmp->tid;
 353                         selected_comm = tmp->comm;
 354                         wattron(center, COLOR_PAIR(5));
 355                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 356                 }
 357                 /* CPU(%) */
 358                 mvwprintw(center, current_line + header_offset, 1, "%1.2f",
 359                                 tmp->totalcpunsec / maxcputime);
 360                 /* TGID */
 361                 mvwprintw(center, current_line + header_offset, 12, "%d", tmp->pid);
 362                 /* PID */
 363                 mvwprintw(center, current_line + header_offset, 22, "%d", tmp->tid);
 364                 /* NAME */
 365                 mvwprintw(center, current_line + header_offset, 32, "%s", tmp->comm);
 366                 wattroff(center, COLOR_PAIR(5));
 367                 nblinedisplayed++;
 368                 current_line++;
 369         }
 370 }
 371
 372 gint sort_perf(gconstpointer p1, gconstpointer p2, gpointer key)
 373 {
 374         struct processtop *n1 = *(struct processtop **) p1;
 375         struct processtop *n2 = *(struct processtop **) p2;
 376
 377         struct perfcounter *tmp1, *tmp2;
 378         unsigned long totaln2 = 0;
 379         unsigned long totaln1 = 0;
 380
 381         if (!key)
 382                 return 0;
 383
 384         tmp1 = g_hash_table_lookup(n1->perf, key);
 385         if (!tmp1)
 386                 totaln1 = 0;
 387         else
 388                 totaln1 = tmp1->count;
 389
 390         tmp2 = g_hash_table_lookup(n2->perf, key);
 391         if (!tmp2)
 392                 totaln2 = 0;
 393         else
 394                 totaln2 = tmp2->count;
 395
 396         if (totaln1 < totaln2)
 397                 return 1;
 398         if (totaln1 == totaln2) {
 399                 totaln1 = n1->tid;
 400                 totaln2 = n2->tid;
 401                 if (totaln1 < totaln2)
 402                         return 1;
 403                 return -1;
 404         }
 405         return -1;
 406 }
 407
 408 void print_key_title(char *key, int line)
 409 {
 410         wattron(center, A_BOLD);
 411         mvwprintw(center, line, 1, "%s\t", key);
 412         wattroff(center, A_BOLD);
 413 }
 414
 415 void update_process_details()
 416 {
 417         unsigned long elapsed;
 418         double maxcputime;
 419         struct processtop *tmp = find_process_tid(data, selected_tid, selected_comm);
 420         struct files *file_tmp;
 421         int i, j = 0;
 422
 423         set_window_title(center, "Process details");
 424
 425
 426         elapsed = data->end - data->start;
 427         maxcputime = elapsed * data->cpu_table->len / 100.0;
 428
 429         print_key_title("Name", 1);
 430         wprintw(center, "%s", selected_comm);
 431         print_key_title("TID", 2);
 432         wprintw(center, "%d", selected_tid);
 433         if (!tmp) {
 434                 print_key_title("Does not exit at this time", 3);
 435                 return;
 436         }
 437
 438         print_key_title("PID", 3);
 439         wprintw(center, "%d", tmp->pid);
 440         print_key_title("PPID", 4);
 441         wprintw(center, "%d", tmp->ppid);
 442         print_key_title("CPU", 5);
 443         wprintw(center, "%1.2f %%", tmp->totalcpunsec/maxcputime);
 444
 445         print_key_title("READ B/s", 6);
 446         wprintw(center, "%d", tmp->fileread);
 447
 448         print_key_title("WRITE B/s", 7);
 449         wprintw(center, "%d", tmp->filewrite);
 450
 451         for (i = 0; i < tmp->process_files_table->len; i++) {
 452                 file_tmp = get_file(tmp, i);
 453                 if (file_tmp != NULL) {
 454                         print_key_title("file", 8+j);
 455                         wprintw(center, "%s fd = %d", file_tmp->name, i);
 456                         wprintw(center, " read = %d", file_tmp->read);
 457                         wprintw(center, " write = %d", file_tmp->write);
 458                         j++;
 459                 }
 460         }
 461 }
 462
 463 void update_perf()
 464 {
 465         int i;
 466         int nblinedisplayed = 0;
 467         int current_line = 0;
 468         struct processtop *tmp;
 469         int header_offset = 2;
 470         int perf_row = 40;
 471         struct perfcounter *perfn1, *perfn2;
 472         char *perf_key = NULL;
 473         int value;
 474         GHashTableIter iter;
 475         gpointer key;
 476
 477         set_window_title(center, "Perf Top");
 478         wattron(center, A_BOLD);
 479         mvwprintw(center, 1, 1, "PID");
 480         mvwprintw(center, 1, 11, "TID");
 481         mvwprintw(center, 1, 22, "NAME");
 482
 483         perf_row = 40;
 484         g_hash_table_iter_init(&iter, data->perf_list);
 485         while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 486                 if (perfn1->visible) {
 487                         /* + 5 to strip the "perf_" prefix */
 488                         mvwprintw(center, 1, perf_row, "%s",
 489                                         (char *) key + 5);
 490                         perf_row += 20;
 491                 }
 492                 if (perfn1->sort) {
 493                         perf_key = (char *) key;
 494                 }
 495         }
 496
 497         wattroff(center, A_BOLD);
 498
 499         g_ptr_array_sort_with_data(data->process_table, sort_perf, perf_key);
 500
 501         for (i = 0; i < data->process_table->len &&
 502                         nblinedisplayed < max_center_lines; i++) {
 503                 tmp = g_ptr_array_index(data->process_table, i);
 504
 505                 if (current_line == selected_line) {
 506                         selected_process = tmp;
 507                         wattron(center, COLOR_PAIR(5));
 508                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 509                 }
 510
 511                 mvwprintw(center, current_line + header_offset, 1, "%d", tmp->pid);
 512                 mvwprintw(center, current_line + header_offset, 11, "%d", tmp->tid);
 513                 mvwprintw(center, current_line + header_offset, 22, "%s", tmp->comm);
 514
 515                 g_hash_table_iter_init(&iter, data->perf_list);
 516
 517                 perf_row = 40;
 518                 while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfn1)) {
 519                         if (perfn1->visible) {
 520                                 perfn2 = g_hash_table_lookup(tmp->perf, (char *) key);
 521                                 if (perfn2)
 522                                         value = perfn2->count;
 523                                 else
 524                                         value = 0;
 525                                 mvwprintw(center, current_line + header_offset,
 526                                                 perf_row, "%d", value);
 527                                 perf_row += 20;
 528                         }
 529                 }
 530
 531                 wattroff(center, COLOR_PAIR(5));
 532                 nblinedisplayed++;
 533                 current_line++;
 534         }
 535 }
 536
 537 gint sort_by_ret_desc(gconstpointer p1, gconstpointer p2)
 538 {
 539         struct processtop *n1 = *(struct processtop **)p1;
 540         struct processtop *n2 = *(struct processtop **)p2;
 541
 542         unsigned long totaln1 = n1->totalfileread + n1->totalfilewrite;
 543         unsigned long totaln2 = n2->totalfileread + n2->totalfilewrite;
 544
 545         if (totaln1 < totaln2)
 546                 return 1;
 547         if (totaln1 == totaln2)
 548                 return 0;
 549         return -1;
 550 }
 551
 552 void update_iostream()
 553 {
 554         int i;
 555         int header_offset = 2;
 556         struct processtop *tmp;
 557         int nblinedisplayed = 0;
 558         int current_line = 0;
 559         int total = 0;
 560
 561         set_window_title(center, "IO Top");
 562         wattron(center, A_BOLD);
 563         mvwprintw(center, 1, 1, "READ (B/s)");
 564         mvwprintw(center, 1, 20, "WRITE (B/s)");
 565
 566         mvwprintw(center, 1, 40, "TOTAL STREAM");
 567
 568         mvwprintw(center, 1, 60, "TGID");
 569         mvwprintw(center, 1, 80, "PID");
 570
 571         mvwprintw(center, 1, 92, "NAME");
 572         wattroff(center, A_BOLD);
 573
 574         g_ptr_array_sort(data->process_table, sort_by_ret_desc);
 575
 576         for (i = list_offset; i < data->process_table->len &&
 577                         nblinedisplayed < max_center_lines; i++) {
 578                 tmp = g_ptr_array_index(data->process_table, i);
 579
 580                 if (current_line == selected_line) {
 581                         selected_process = tmp;
 582                         selected_tid = tmp->tid;
 583                         selected_comm = tmp->comm;
 584                         wattron(center, COLOR_PAIR(5));
 585                         mvwhline(center, current_line + header_offset, 1, ' ', COLS-3);
 586                 }
 587
 588                 /* READ (bytes/sec) */
 589                 mvwprintw(center, current_line + header_offset, 1, "%lu",
 590                         tmp->fileread);
 591
 592                 /* WRITE (bytes/sec) */
 593                 mvwprintw(center, current_line + header_offset, 20, "%lu",
 594                         tmp->filewrite);
 595
 596                 /* TOTAL STREAM */
 597                 total = tmp->totalfileread + tmp->totalfilewrite;
 598
 599                 if (total >= 1000000)
 600                         mvwprintw(center, current_line + header_offset, 40, "%lu MB",
 601                                         total/1000000);
 602                 else if (total >= 1000)
 603                         mvwprintw(center, current_line + header_offset, 40, "%lu KB",
 604                                         total/1000);
 605                 else
 606                         mvwprintw(center, current_line + header_offset, 40, "%lu B",
 607                                         total);
 608
 609                 /* TGID */
 610                 mvwprintw(center, current_line + header_offset, 60, "%d", tmp->pid);
 611                 /* PID */
 612                 mvwprintw(center, current_line + header_offset, 80, "%d", tmp->tid);
 613                 /* NAME */
 614                 mvwprintw(center, current_line + header_offset, 92, "%s", tmp->comm);
 615                 wattroff(center, COLOR_PAIR(5));
 616                 nblinedisplayed++;
 617                 current_line++;
 618         }
 619 }
 620
 621 void update_current_view()
 622 {
 623         sem_wait(&update_display_sem);
 624         if (!data)
 625                 return;
 626         update_header();
 627
 628         werase(center);
 629         box(center, 0, 0);
 630         switch (current_view) {
 631         case cpu:
 632                 update_cputop_display();
 633                 break;
 634         case perf:
 635                 update_perf();
 636                 break;
 637         case process_details:
 638                 update_process_details();
 639                 break;
 640         case iostream:
 641                 update_iostream();
 642                 break;
 643         case tree:
 644                 update_cputop_display();
 645                 break;
 646         default:
 647                 break;
 648         }
 649         update_panels();
 650         doupdate();
 651         sem_post(&update_display_sem);
 652 }
 653
 654 void setup_perf_panel()
 655 {
 656         int size;
 657         if (!data)
 658                 return;
 659         if (perf_panel_window) {
 660                 del_panel(perf_panel);
 661                 delwin(perf_panel_window);
 662         }
 663         size = g_hash_table_size(data->perf_list);
 664         perf_panel_window = create_window(size + 2, 30, 10, 10);
 665         perf_panel = new_panel(perf_panel_window);
 666         perf_panel_visible = 0;
 667         hide_panel(perf_panel);
 668 }
 669
 670 void update_perf_panel(int line_selected, int toggle_view, int toggle_sort)
 671 {
 672         int i;
 673         struct perfcounter *perf;
 674         GList *perflist;
 675
 676         if (!data)
 677                 return;
 678
 679         werase(perf_panel_window);
 680         box(perf_panel_window, 0 , 0);
 681         set_window_title(perf_panel_window, "Perf Preferences ");
 682         wattron(perf_panel_window, A_BOLD);
 683         mvwprintw(perf_panel_window, g_hash_table_size(data->perf_list) + 1, 1,
 684                         " 's' to sort");
 685         wattroff(perf_panel_window, A_BOLD);
 686
 687         if (toggle_sort == 1) {
 688                 i = 0;
 689                 perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 690                 while (perflist) {
 691                         perf = g_hash_table_lookup(data->perf_list, perflist->data);
 692                         if (i != line_selected)
 693                                 perf->sort = 0;
 694                         else
 695                                 perf->sort = 1;
 696                         i++;
 697                         perflist = g_list_next(perflist);
 698                 }
 699                 update_current_view();
 700         }
 701
 702         i = 0;
 703         perflist = g_list_first(g_hash_table_get_keys(data->perf_list));
 704         while (perflist) {
 705                 perf = g_hash_table_lookup(data->perf_list, perflist->data);
 706                 if (i == line_selected && toggle_view == 1) {
 707                         perf->visible = perf->visible == 1 ? 0:1;
 708                         update_current_view();
 709                 }
 710                 if (i == line_selected) {
 711                         wattron(perf_panel_window, COLOR_PAIR(5));
 712                         mvwhline(perf_panel_window, i + 1, 1, ' ', 30 - 2);
 713                 }
 714                 if (perf->sort == 1)
 715                         wattron(perf_panel_window, A_BOLD);
 716                 mvwprintw(perf_panel_window, i + 1, 1, "[%c] %s",
 717                                 perf->visible == 1 ? 'x' : ' ',
 718                                 (char *) perflist->data + 6);
 719                 wattroff(perf_panel_window, A_BOLD);
 720                 wattroff(perf_panel_window, COLOR_PAIR(5));
 721                 i++;
 722                 perflist = g_list_next(perflist);
 723         }
 724         update_panels();
 725         doupdate();
 726 }
 727
 728
 729 void toggle_perf_panel(void)
 730 {
 731         if (perf_panel_visible) {
 732                 hide_panel(perf_panel);
 733                 perf_panel_visible = 0;
 734         } else {
 735                 setup_perf_panel();
 736                 update_perf_panel(perf_line_selected, 0, 0);
 737                 show_panel(perf_panel);
 738                 perf_panel_visible = 1;
 739         }
 740         update_panels();
 741         doupdate();
 742 }
 743
 744 void display(unsigned int index)
 745 {
 746         last_display_index = index;
 747         currently_displayed_index = index;
 748         data = g_ptr_array_index(copies, index);
 749         if (!data)
 750                 return;
 751         max_elements = data->process_table->len;
 752         update_current_view();
 753         update_footer();
 754         update_panels();
 755         doupdate();
 756 }
 757
 758 void pause_display()
 759 {
 760         toggle_pause = 1;
 761         print_log("Pause");
 762         sem_wait(&pause_sem);
 763 }
 764
 765 void resume_display()
 766 {
 767         toggle_pause = -1;
 768         print_log("Resume");
 769         sem_post(&pause_sem);
 770 }
 771
 772 void *handle_keyboard(void *p)
 773 {
 774         int ch;
 775         while((ch = getch())) {
 776                 switch(ch) {
 777                 /* Move the cursor and scroll */
 778                 case KEY_DOWN:
 779                         if (perf_panel_visible) {
 780                                 if (perf_line_selected < g_hash_table_size(data->perf_list) - 1)
 781                                         perf_line_selected++;
 782                                 update_perf_panel(perf_line_selected, 0, 0);
 783                         } else {
 784                                 if (selected_line < (max_center_lines - 1) &&
 785                                                 selected_line < max_elements - 1) {
 786                                         selected_line++;
 787                                         selected_in_list++;
 788                                 } else if (selected_in_list < (max_elements - 1)
 789                                                 && (list_offset < (max_elements - max_center_lines))) {
 790                                         selected_in_list++;
 791                                         list_offset++;
 792                                 }
 793                                 update_current_view();
 794                         }
 795                         break;
 796                 case KEY_NPAGE:
 797                         if ((selected_line + 10 < max_center_lines - 1) &&
 798                                         ((selected_line + 10) < max_elements - 1)) {
 799                                 selected_line += 10;
 800                                 selected_in_list += 10;
 801                         } else if (max_elements > max_center_lines) {
 802                                 selected_line = max_center_lines - 1;
 803                                 if (selected_in_list + 10 < max_elements - 1) {
 804                                         selected_in_list += 10;
 805                                         list_offset += (selected_in_list - max_center_lines + 1);
 806                                 }
 807                         } else if (selected_line + 10 > max_elements) {
 808                                 selected_line = max_elements - 1;
 809                         }
 810                         update_current_view();
 811                         break;
 812                 case KEY_UP:
 813                         if (perf_panel_visible) {
 814                                 if (perf_line_selected > 0)
 815                                         perf_line_selected--;
 816                                 update_perf_panel(perf_line_selected, 0, 0);
 817                         } else {
 818                                 if (selected_line > 0) {
 819                                         selected_line--;
 820                                         selected_in_list--;
 821                                 } else if (selected_in_list > 0 && list_offset > 0) {
 822                                         selected_in_list--;
 823                                         list_offset--;
 824                                 }
 825                                 update_current_view();
 826                         }
 827                         break;
 828                 case KEY_PPAGE:
 829                         if (selected_line - 10 > 0)
 830                                 selected_line -= 10;
 831                         else
 832                                 selected_line = 0;
 833                         update_current_view();
 834                         break;
 835
 836                 /* Navigate the history with arrows */
 837                 case KEY_LEFT:
 838                         if (currently_displayed_index > 0) {
 839                                 currently_displayed_index--;
 840                                 print_log("Going back in time");
 841                         } else {
 842                                 print_log("Cannot rewind, last data is already displayed");
 843                         }
 844                         data = g_ptr_array_index(copies, currently_displayed_index);
 845                         max_elements = data->process_table->len;
 846
 847                         /* we force to pause the display when moving in time */
 848                         if (toggle_pause < 0)
 849                                 pause_display();
 850
 851                         update_current_view();
 852                         update_footer();
 853                         break;
 854                 case KEY_RIGHT:
 855                         if (currently_displayed_index < last_display_index) {
 856                                 currently_displayed_index++;
 857                                 print_log("Going forward in time");
 858                                 data = g_ptr_array_index(copies, currently_displayed_index);
 859                                 max_elements = data->process_table->len;
 860                                 update_current_view();
 861                                 update_footer();
 862                         } else {
 863                                 print_log("Manually moving forward");
 864                                 sem_post(&timer);
 865                                 /* we force to resume the refresh when moving forward */
 866                                 if (toggle_pause > 0)
 867                                         resume_display();
 868                         }
 869
 870                         break;
 871                 case ' ':
 872                         if (perf_panel_visible)
 873                                 update_perf_panel(perf_line_selected, 1, 0);
 874                         break;
 875                 case 's':
 876                         if (perf_panel_visible)
 877                                 update_perf_panel(perf_line_selected, 0, 1);
 878                         break;
 879
 880                 case 13: /* FIXME : KEY_ENTER ?? */
 881                         if (current_view == cpu) {
 882                                 current_view = process_details;
 883                         }
 884                         update_current_view();
 885                         break;
 886
 887                 case KEY_F(1):
 888                         toggle_tree *= -1;
 889                         current_view = cpu;
 890                         update_current_view();
 891                         break;
 892                 case KEY_F(2):
 893                         current_view = cpu;
 894                         update_current_view();
 895                         break;
 896                 case KEY_F(3):
 897                         current_view = perf;
 898                         toggle_tree = -1;
 899                         update_current_view();
 900                         break;
 901                 case KEY_F(4):
 902                         current_view = iostream;
 903                         toggle_tree = -1;
 904                         update_current_view();
 905                         break;
 906                 case KEY_F(10):
 907                 case 'q':
 908                         reset_ncurses();
 909                         break;
 910                 case 't':
 911                         toggle_threads *= -1;
 912                         update_current_view();
 913                         break;
 914                 case 'p':
 915                         if (toggle_pause < 0) {
 916                                 pause_display();
 917                         } else {
 918                                 resume_display();
 919                         }
 920                         break;
 921                 case 'P':
 922                         toggle_perf_panel();
 923                         break;
 924                 default:
 925                         if (data)
 926                                 update_current_view();
 927                         break;
 928                 }
 929                 update_footer();
 930         }
 931         return NULL;
 932 }
 933
 934 void init_ncurses()
 935 {
 936         sem_init(&update_display_sem, 0, 1);
 937         init_screen();
 938
 939         header = create_window(6, COLS - 1, 0, 0);
 940         center = create_window(LINES - 7 - 7, COLS - 1, 6, 0);
 941         status = create_window(MAX_LOG_LINES + 2, COLS - 1, LINES - 7, 0);
 942         footer = create_window(1, COLS - 1, LINES - 1, 0);
 943
 944         print_log("Starting display");
 945
 946         main_panel = new_panel(center);
 947         setup_perf_panel();
 948
 949         current_view = cpu;
 950
 951         basic_header();
 952         update_footer();
 953
 954         pthread_create(&keyboard_thread, NULL, handle_keyboard, (void *)NULL);
 955 }
 956