/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
- *
- * © 2009-2010 Michael Stapelberg and contributors
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
* © 2009-2010 Jan-Erik Rediger
*
- * See file LICENSE for license information.
- *
- * sighandler.c: contains all functions for signal handling
+ * sighandler.c: Interactive crash dialog upon SIGSEGV/SIGABRT/SIGFPE (offers
+ * to restart inplace).
*
*/
+#include "all.h"
+
#include <ev.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
#include <iconv.h>
#include <signal.h>
-#include <xcb/xcb.h>
-#include <xcb/xcb_aux.h>
#include <xcb/xcb_event.h>
-#include <xcb/xcb_keysyms.h>
#include <X11/keysym.h>
-#include "i3.h"
-#include "util.h"
-#include "xcb.h"
-#include "log.h"
-#include "config.h"
-#include "randr.h"
-
static xcb_gcontext_t pixmap_gc;
static xcb_pixmap_t pixmap;
static int raised_signal;
static char *crash_text[] = {
- "i3 just crashed.",
- "To debug this problem, either attach gdb now",
- "or press 'e' to exit and get a core-dump.",
- "If you want to keep your session,",
- "press 'r' to restart i3 in-place."
+ "i3 just crashed.",
+ "To debug this problem, either attach gdb now",
+ "or press",
+ "- 'e' to exit and get a core-dump,",
+ "- 'r' to restart i3 in-place or",
+ "- 'f' to forget the current layout and restart"
};
-static int crash_text_longest = 1;
+static int crash_text_longest = 5;
/*
* Draw the window containing the info text
*
*/
-static int sig_draw_window(xcb_connection_t *conn, xcb_window_t win, int width, int height, int font_height) {
- /* re-draw the background */
- xcb_rectangle_t border = { 0, 0, width, height},
- inner = { 2, 2, width - 4, height - 4};
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FF0000"));
- xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
- xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
-
- /* restore font color */
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FFFFFF"));
-
- for (int i = 0; i < sizeof(crash_text) / sizeof(char*); i++) {
- int text_len = strlen(crash_text[i]);
- char *full_text = convert_utf8_to_ucs2(crash_text[i], &text_len);
- xcb_image_text_16(conn, text_len, pixmap, pixmap_gc, 8 /* X */,
- 3 + (i + 1) * font_height /* Y = baseline of font */,
- (xcb_char2b_t*)full_text);
- free(full_text);
- }
-
- /* Copy the contents of the pixmap to the real window */
- xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, width, height);
- xcb_flush(conn);
-
- return 1;
+static int sig_draw_window(xcb_window_t win, int width, int height, int font_height) {
+ /* re-draw the background */
+ xcb_rectangle_t border = { 0, 0, width, height},
+ inner = { 2, 2, width - 4, height - 4};
+ xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FF0000") });
+ xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
+ xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#000000") });
+ xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
+
+ /* restore font color */
+ set_font_colors(pixmap_gc, get_colorpixel("#FFFFFF"), get_colorpixel("#000000"));
+
+ for (int i = 0; i < sizeof(crash_text) / sizeof(char*); i++) {
+ draw_text(crash_text[i], strlen(crash_text[i]), false, pixmap, pixmap_gc,
+ 8, 5 + i * font_height, width - 16);
+ }
+
+ /* Copy the contents of the pixmap to the real window */
+ xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, width, height);
+ xcb_flush(conn);
+
+ return 1;
}
/*
*
*/
static int sig_handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
- xcb_keysym_t sym = xcb_key_press_lookup_keysym(keysyms, event, event->state);
+ uint16_t state = event->state;
- if (sym == 'e') {
- DLOG("User issued exit-command, raising error again.\n");
- raise(raised_signal);
- exit(1);
- }
+ /* Apparantly, after activating numlock once, the numlock modifier
+ * stays turned on (use xev(1) to verify). So, to resolve useful
+ * keysyms, we remove the numlock flag from the event state */
+ state &= ~xcb_numlock_mask;
+
+ xcb_keysym_t sym = xcb_key_press_lookup_keysym(keysyms, event, state);
+
+ if (sym == 'e') {
+ DLOG("User issued exit-command, raising error again.\n");
+ raise(raised_signal);
+ exit(1);
+ }
+
+ if (sym == 'r')
+ i3_restart(false);
- if (sym == 'r')
- i3_restart();
+ if (sym == 'f')
+ i3_restart(true);
- return 1;
+ return 1;
}
/*
*
*/
static xcb_window_t open_input_window(xcb_connection_t *conn, Rect screen_rect, uint32_t width, uint32_t height) {
- xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
- xcb_window_t win = xcb_generate_id(conn);
+ xcb_window_t win = xcb_generate_id(conn);
- uint32_t mask = 0;
- uint32_t values[2];
+ uint32_t mask = 0;
+ uint32_t values[2];
- mask |= XCB_CW_BACK_PIXEL;
- values[0] = 0;
+ mask |= XCB_CW_BACK_PIXEL;
+ values[0] = 0;
- mask |= XCB_CW_OVERRIDE_REDIRECT;
- values[1] = 1;
+ mask |= XCB_CW_OVERRIDE_REDIRECT;
+ values[1] = 1;
- /* center each popup on the specified screen */
- uint32_t x = screen_rect.x + ((screen_rect.width / 2) - (width / 2)),
- y = screen_rect.y + ((screen_rect.height / 2) - (height / 2));
+ /* center each popup on the specified screen */
+ uint32_t x = screen_rect.x + ((screen_rect.width / 2) - (width / 2)),
+ y = screen_rect.y + ((screen_rect.height / 2) - (height / 2));
- xcb_create_window(conn,
- XCB_COPY_FROM_PARENT,
- win, /* the window id */
- root, /* parent == root */
- x, y, width, height, /* dimensions */
- 0, /* border = 0, we draw our own */
- XCB_WINDOW_CLASS_INPUT_OUTPUT,
- XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
- mask,
- values);
+ xcb_create_window(conn,
+ XCB_COPY_FROM_PARENT,
+ win, /* the window id */
+ root, /* parent == root */
+ x, y, width, height, /* dimensions */
+ 0, /* border = 0, we draw our own */
+ XCB_WINDOW_CLASS_INPUT_OUTPUT,
+ XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
+ mask,
+ values);
- /* Map the window (= make it visible) */
- xcb_map_window(conn, win);
+ /* Map the window (= make it visible) */
+ xcb_map_window(conn, win);
- return win;
+ return win;
}
/*
*
*/
void handle_signal(int sig, siginfo_t *info, void *data) {
- DLOG("i3 crashed. SIG: %d\n", sig);
-
- struct sigaction action;
- action.sa_handler = SIG_DFL;
- sigaction(sig, &action, NULL);
- raised_signal = sig;
-
- xcb_connection_t *conn = global_conn;
-
- /* setup event handler for key presses */
- xcb_event_handlers_t sig_evenths;
- memset(&sig_evenths, 0, sizeof(xcb_event_handlers_t));
- xcb_event_handlers_init(conn, &sig_evenths);
- xcb_event_set_key_press_handler(&sig_evenths, sig_handle_key_press, NULL);
-
- i3Font *font = load_font(conn, config.font);
-
- /* width and height of the popup window, so that the text fits in */
- int crash_text_num = sizeof(crash_text) / sizeof(char*);
- int height = 13 + (crash_text_num * font->height);
-
- /* calculate width for longest text */
- int text_len = strlen(crash_text[crash_text_longest]);
- char *longest_text = convert_utf8_to_ucs2(crash_text[crash_text_longest], &text_len);
- int font_width = predict_text_width(conn, config.font, longest_text, text_len);
- int width = font_width + 20;
-
- /* Open a popup window on each virtual screen */
- Output *screen;
- xcb_window_t win;
- TAILQ_FOREACH(screen, &outputs, outputs) {
- if (!screen->active)
- continue;
- win = open_input_window(conn, screen->rect, width, height);
-
- /* Create pixmap */
- pixmap = xcb_generate_id(conn);
- pixmap_gc = xcb_generate_id(conn);
- xcb_create_pixmap(conn, root_depth, pixmap, win, width, height);
- xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
-
- /* Create graphics context */
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font->id);
-
- /* Grab the keyboard to get all input */
- xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
-
- /* Grab the cursor inside the popup */
- xcb_grab_pointer(conn, false, win, XCB_NONE, XCB_GRAB_MODE_ASYNC,
- XCB_GRAB_MODE_ASYNC, win, XCB_NONE, XCB_CURRENT_TIME);
-
- sig_draw_window(conn, win, width, height, font->height);
- xcb_flush(conn);
+ DLOG("i3 crashed. SIG: %d\n", sig);
+
+ struct sigaction action;
+ action.sa_handler = SIG_DFL;
+ sigaction(sig, &action, NULL);
+ raised_signal = sig;
+
+ /* width and height of the popup window, so that the text fits in */
+ int crash_text_num = sizeof(crash_text) / sizeof(char*);
+ int height = 13 + (crash_text_num * config.font.height);
+
+ /* calculate width for longest text */
+ size_t text_len = strlen(crash_text[crash_text_longest]);
+ xcb_char2b_t *longest_text = convert_utf8_to_ucs2(crash_text[crash_text_longest], &text_len);
+ int font_width = predict_text_width((char *)longest_text, text_len, true);
+ int width = font_width + 20;
+
+ /* Open a popup window on each virtual screen */
+ Output *screen;
+ xcb_window_t win;
+ TAILQ_FOREACH(screen, &outputs, outputs) {
+ if (!screen->active)
+ continue;
+ win = open_input_window(conn, screen->rect, width, height);
+
+ /* Create pixmap */
+ pixmap = xcb_generate_id(conn);
+ pixmap_gc = xcb_generate_id(conn);
+ xcb_create_pixmap(conn, root_depth, pixmap, win, width, height);
+ xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
+
+ /* Grab the keyboard to get all input */
+ xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
+
+ /* Grab the cursor inside the popup */
+ xcb_grab_pointer(conn, false, win, XCB_NONE, XCB_GRAB_MODE_ASYNC,
+ XCB_GRAB_MODE_ASYNC, win, XCB_NONE, XCB_CURRENT_TIME);
+
+ sig_draw_window(win, width, height, config.font.height);
+ xcb_flush(conn);
+ }
+
+ xcb_generic_event_t *event;
+ /* Yay, more own eventhandlers… */
+ while ((event = xcb_wait_for_event(conn))) {
+ /* Strip off the highest bit (set if the event is generated) */
+ int type = (event->response_type & 0x7F);
+ if (type == XCB_KEY_PRESS) {
+ sig_handle_key_press(NULL, conn, (xcb_key_press_event_t*)event);
}
-
- xcb_event_wait_for_event_loop(&sig_evenths);
+ free(event);
+ }
}
/*
*
*/
void setup_signal_handler() {
- struct sigaction action;
-
- action.sa_sigaction = handle_signal;
- action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
- sigemptyset(&action.sa_mask);
-
- if (sigaction(SIGSEGV, &action, NULL) == -1 ||
- sigaction(SIGFPE, &action, NULL) == -1)
- ELOG("Could not setup signal handler");
+ struct sigaction action;
+
+ action.sa_sigaction = handle_signal;
+ action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
+ sigemptyset(&action.sa_mask);
+
+ /* Catch all signals with default action "Core", see signal(7) */
+ if (sigaction(SIGQUIT, &action, NULL) == -1 ||
+ sigaction(SIGILL, &action, NULL) == -1 ||
+ sigaction(SIGABRT, &action, NULL) == -1 ||
+ sigaction(SIGFPE, &action, NULL) == -1 ||
+ sigaction(SIGSEGV, &action, NULL) == -1)
+ ELOG("Could not setup signal handler");
}
projects / i3 / i3 / blobdiff