2 * console-io.c: ConsoleDriver internal calls for Unix systems.
5 * Gonzalo Paniagua Javier (gonzalo@ximian.com)
7 * Copyright (C) 2005-2009 Novell, Inc. (http://www.novell.com)
9 #if defined(__native_client__)
10 #include "console-null.c"
20 #ifdef HAVE_SYS_SELECT_H
21 # include <sys/select.h>
23 #ifdef HAVE_SYS_TIME_H
24 # include <sys/time.h>
26 #include <sys/types.h>
30 #include <mono/metadata/appdomain.h>
31 #include <mono/metadata/object-internals.h>
32 #include <mono/metadata/class-internals.h>
33 #include <mono/metadata/domain-internals.h>
34 #include <mono/metadata/gc-internals.h>
35 #include <mono/metadata/metadata.h>
36 #include <mono/metadata/threadpool-ms.h>
37 #include <mono/utils/mono-signal-handler.h>
38 #include <mono/utils/mono-proclib.h>
40 /* On solaris, curses.h must come before both termios.h and term.h */
51 /* Needed for FIONREAD under solaris */
52 #ifdef HAVE_SYS_FILIO_H
53 # include <sys/filio.h>
55 #ifdef HAVE_SYS_IOCTL_H
56 # include <sys/ioctl.h>
59 #include <mono/metadata/console-io.h>
60 #include <mono/metadata/exception.h>
62 static gboolean setup_finished;
63 static gboolean atexit_called;
65 /* The string used to return the terminal to its previous state */
66 static gchar *teardown_str;
68 /* The string used to set the terminal into keypad xmit mode after SIGCONT is received */
69 static gchar *keypad_xmit_str;
72 /* This is the last state used by Mono, used after a CONT signal is received */
73 static struct termios mono_attr;
76 /* static void console_restore_signal_handlers (void); */
77 static void console_set_signal_handlers (void);
80 mono_console_init (void)
84 /* Make sure the standard file descriptors are opened */
85 fd = open ("/dev/null", O_RDWR);
86 while (fd >= 0 && fd < 3) {
87 fd = open ("/dev/null", O_RDWR);
92 static struct termios initial_attr;
95 ves_icall_System_ConsoleDriver_Isatty (HANDLE handle)
97 return isatty (GPOINTER_TO_INT (handle));
101 set_property (gint property, gboolean value)
104 gboolean callset = FALSE;
107 if (tcgetattr (STDIN_FILENO, &attr) == -1)
110 check = (attr.c_lflag & property) != 0;
111 if ((value || check) && !(value && check)) {
114 attr.c_lflag |= property;
116 attr.c_lflag &= ~property;
122 if (tcsetattr (STDIN_FILENO, TCSANOW, &attr) == -1)
130 ves_icall_System_ConsoleDriver_SetEcho (MonoBoolean want_echo)
133 return set_property (ECHO, want_echo);
137 ves_icall_System_ConsoleDriver_SetBreak (MonoBoolean want_break)
139 return set_property (IGNBRK, !want_break);
143 ves_icall_System_ConsoleDriver_InternalKeyAvailable (gint32 timeout)
147 struct timeval *tvptr;
153 FD_SET (STDIN_FILENO, &rfds);
155 divvy = div (timeout, 1000);
156 tv.tv_sec = divvy.quot;
157 tv.tv_usec = divvy.rem;
162 ret = select (STDIN_FILENO + 1, &rfds, NULL, NULL, tvptr);
163 } while (ret == -1 && errno == EINTR);
167 ret = ioctl (STDIN_FILENO, FIONREAD, &nbytes);
172 return (ret > 0) ? ret : 0;
175 static gint32 cols_and_lines;
179 terminal_get_dimensions (void)
183 int save_errno = errno;
185 if (ioctl (STDIN_FILENO, TIOCGWINSZ, &ws) == 0){
186 ret = (ws.ws_col << 16) | ws.ws_row;
194 terminal_get_dimensions (void)
203 int unused G_GNUC_UNUSED;
208 if (teardown_str != NULL) {
209 unused = write (STDOUT_FILENO, teardown_str, strlen (teardown_str));
210 g_free (teardown_str);
214 tcflush (STDIN_FILENO, TCIFLUSH);
215 tcsetattr (STDIN_FILENO, TCSANOW, &initial_attr);
216 set_property (ECHO, TRUE);
217 setup_finished = FALSE;
221 do_console_cancel_event (void)
223 static MonoClassField *cancel_handler_field;
225 MonoDomain *domain = mono_domain_get ();
227 MonoDelegate *load_value;
231 /* FIXME: this should likely iterate all the domains, instead */
235 klass = mono_class_try_load_from_name (mono_defaults.corlib, "System", "Console");
239 if (cancel_handler_field == NULL) {
240 cancel_handler_field = mono_class_get_field_from_name (klass, "cancel_handler");
241 g_assert (cancel_handler_field);
244 vtable = mono_class_vtable_full (domain, klass, &error);
245 if (vtable == NULL || !is_ok (&error)) {
246 mono_error_cleanup (&error);
249 mono_field_static_get_value (vtable, cancel_handler_field, &load_value);
250 if (load_value == NULL)
253 klass = load_value->object.vtable->klass;
254 method = mono_class_get_method_from_name (klass, "BeginInvoke", -1);
255 g_assert (method != NULL);
257 mono_threadpool_ms_begin_invoke (domain, (MonoObject*) load_value, method, NULL);
260 static int need_cancel = FALSE;
261 /* this is executed from the finalizer thread */
263 mono_console_handle_async_ops (void)
267 do_console_cancel_event ();
271 static gboolean in_sigint;
273 MONO_SIG_HANDLER_FUNC (static, sigint_handler)
283 mono_gc_finalize_notify ();
288 static struct sigaction save_sigcont, save_sigint, save_sigwinch;
290 MONO_SIG_HANDLER_FUNC (static, sigcont_handler)
292 int unused G_GNUC_UNUSED;
293 // Ignore error, there is not much we can do in the sigcont handler.
294 tcsetattr (STDIN_FILENO, TCSANOW, &mono_attr);
296 if (keypad_xmit_str != NULL)
297 unused = write (STDOUT_FILENO, keypad_xmit_str, strlen (keypad_xmit_str));
299 // Call previous handler
300 if (save_sigcont.sa_sigaction != NULL &&
301 save_sigcont.sa_sigaction != (void *)SIG_DFL &&
302 save_sigcont.sa_sigaction != (void *)SIG_IGN)
303 (*save_sigcont.sa_sigaction) (MONO_SIG_HANDLER_PARAMS);
306 MONO_SIG_HANDLER_FUNC (static, sigwinch_handler)
308 int dims = terminal_get_dimensions ();
310 cols_and_lines = dims;
312 // Call previous handler
313 if (save_sigwinch.sa_sigaction != NULL &&
314 save_sigwinch.sa_sigaction != (void *)SIG_DFL &&
315 save_sigwinch.sa_sigaction != (void *)SIG_IGN)
316 (*save_sigwinch.sa_sigaction) (MONO_SIG_HANDLER_PARAMS);
320 * console_set_signal_handlers:
322 * Installs various signals handlers for the use of the console, as
325 * SIGCONT: this is received after the application has resumed execution
326 * if it was suspended with Control-Z before. This signal handler needs
327 * to resend the terminal sequence to send keyboard in keypad mode (this
328 * is the difference between getting a cuu1 code or a kcuu1 code for up-arrow
331 * SIGINT: invokes the System.Console.DoConsoleCancelEvent method using
332 * a thread from the thread pool which notifies all registered cancel_event
335 * SIGWINCH: is used to track changes to the console window when a GUI
336 * terminal is resized. It sets an internal variable that is checked
337 * by System.Console when the Terminfo driver has been activated.
340 console_set_signal_handlers ()
342 #if defined(HAVE_SIGACTION)
343 struct sigaction sigcont, sigint, sigwinch;
345 memset (&sigcont, 0, sizeof (struct sigaction));
346 memset (&sigint, 0, sizeof (struct sigaction));
347 memset (&sigwinch, 0, sizeof (struct sigaction));
350 sigcont.sa_handler = (void (*)(int)) sigcont_handler;
351 sigcont.sa_flags = SA_RESTART;
352 sigemptyset (&sigcont.sa_mask);
353 sigaction (SIGCONT, &sigcont, &save_sigcont);
356 sigint.sa_handler = (void (*)(int)) sigint_handler;
357 sigint.sa_flags = SA_RESTART;
358 sigemptyset (&sigint.sa_mask);
359 sigaction (SIGINT, &sigint, &save_sigint);
361 // Window size changed
362 sigwinch.sa_handler = (void (*)(int)) sigwinch_handler;
363 sigwinch.sa_flags = SA_RESTART;
364 sigemptyset (&sigwinch.sa_mask);
365 sigaction (SIGWINCH, &sigwinch, &save_sigwinch);
369 #if currently_unuused
371 // Currently unused, should we ever call the restore handler?
372 // Perhaps before calling into Process.Start?
375 console_restore_signal_handlers ()
377 sigaction (SIGCONT, &save_sigcont, NULL);
378 sigaction (SIGINT, &save_sigint, NULL);
379 sigaction (SIGWINCH, &save_sigwinch, NULL);
384 set_control_chars (MonoArray *control_chars, const guchar *cc)
386 /* The index into the array comes from corlib/System/ControlCharacters.cs */
388 mono_array_set (control_chars, gchar, 0, cc [VINTR]);
391 mono_array_set (control_chars, gchar, 1, cc [VQUIT]);
394 mono_array_set (control_chars, gchar, 2, cc [VERASE]);
397 mono_array_set (control_chars, gchar, 3, cc [VKILL]);
400 mono_array_set (control_chars, gchar, 4, cc [VEOF]);
403 mono_array_set (control_chars, gchar, 5, cc [VTIME]);
406 mono_array_set (control_chars, gchar, 6, cc [VMIN]);
409 mono_array_set (control_chars, gchar, 7, cc [VSWTC]);
412 mono_array_set (control_chars, gchar, 8, cc [VSTART]);
415 mono_array_set (control_chars, gchar, 9, cc [VSTOP]);
418 mono_array_set (control_chars, gchar, 10, cc [VSUSP]);
421 mono_array_set (control_chars, gchar, 11, cc [VEOL]);
424 mono_array_set (control_chars, gchar, 12, cc [VREPRINT]);
427 mono_array_set (control_chars, gchar, 13, cc [VDISCARD]);
430 mono_array_set (control_chars, gchar, 14, cc [VWERASE]);
433 mono_array_set (control_chars, gchar, 15, cc [VLNEXT]);
436 mono_array_set (control_chars, gchar, 16, cc [VEOL2]);
441 ves_icall_System_ConsoleDriver_TtySetup (MonoString *keypad, MonoString *teardown, MonoArray **control_chars, int **size)
445 dims = terminal_get_dimensions ();
447 int cols = 0, rows = 0;
449 const char *str = g_getenv ("COLUMNS");
452 str = g_getenv ("LINES");
456 if (cols != 0 && rows != 0)
457 cols_and_lines = (cols << 16) | rows;
461 cols_and_lines = dims;
464 *size = &cols_and_lines;
466 /* 17 is the number of entries set in set_control_chars() above.
467 * NCCS is the total size, but, by now, we only care about those 17 values*/
468 mono_gc_wbarrier_generic_store (control_chars, (MonoObject*) mono_array_new (mono_domain_get (), mono_defaults.byte_class, 17));
469 if (tcgetattr (STDIN_FILENO, &initial_attr) == -1)
472 mono_attr = initial_attr;
473 mono_attr.c_lflag &= ~(ICANON);
474 mono_attr.c_iflag &= ~(IXON|IXOFF);
475 mono_attr.c_cc [VMIN] = 1;
476 mono_attr.c_cc [VTIME] = 0;
478 /* Disable C-y being used as a suspend character on OSX */
479 mono_attr.c_cc [VDSUSP] = 255;
481 if (tcsetattr (STDIN_FILENO, TCSANOW, &mono_attr) == -1)
484 set_control_chars (*control_chars, mono_attr.c_cc);
485 /* If initialized from another appdomain... */
489 keypad_xmit_str = keypad != NULL ? mono_string_to_utf8 (keypad) : NULL;
491 console_set_signal_handlers ();
492 setup_finished = TRUE;
493 if (!atexit_called) {
494 if (teardown != NULL)
495 teardown_str = mono_string_to_utf8 (teardown);
497 mono_atexit (tty_teardown);
502 #endif /* #if defined(__native_client__) */