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)
8 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
10 #if defined(__native_client__)
11 #include "console-null.c"
21 #ifdef HAVE_SYS_SELECT_H
22 # include <sys/select.h>
24 #ifdef HAVE_SYS_TIME_H
25 # include <sys/time.h>
27 #include <sys/types.h>
31 #include <mono/metadata/appdomain.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/class-internals.h>
34 #include <mono/metadata/domain-internals.h>
35 #include <mono/metadata/gc-internals.h>
36 #include <mono/metadata/metadata.h>
37 #include <mono/metadata/threadpool-ms.h>
38 #include <mono/utils/mono-signal-handler.h>
39 #include <mono/utils/mono-proclib.h>
41 /* On solaris, curses.h must come before both termios.h and term.h */
52 /* Needed for FIONREAD under solaris */
53 #ifdef HAVE_SYS_FILIO_H
54 # include <sys/filio.h>
56 #ifdef HAVE_SYS_IOCTL_H
57 # include <sys/ioctl.h>
60 #include <mono/metadata/console-io.h>
61 #include <mono/metadata/exception.h>
63 static gboolean setup_finished;
64 static gboolean atexit_called;
66 /* The string used to return the terminal to its previous state */
67 static gchar *teardown_str;
69 /* The string used to set the terminal into keypad xmit mode after SIGCONT is received */
70 static gchar *keypad_xmit_str;
73 /* This is the last state used by Mono, used after a CONT signal is received */
74 static struct termios mono_attr;
77 /* static void console_restore_signal_handlers (void); */
78 static void console_set_signal_handlers (void);
81 mono_console_init (void)
85 /* Make sure the standard file descriptors are opened */
86 fd = open ("/dev/null", O_RDWR);
87 while (fd >= 0 && fd < 3) {
88 fd = open ("/dev/null", O_RDWR);
93 static struct termios initial_attr;
96 ves_icall_System_ConsoleDriver_Isatty (HANDLE handle)
98 return isatty (GPOINTER_TO_INT (handle));
102 set_property (gint property, gboolean value)
105 gboolean callset = FALSE;
108 if (tcgetattr (STDIN_FILENO, &attr) == -1)
111 check = (attr.c_lflag & property) != 0;
112 if ((value || check) && !(value && check)) {
115 attr.c_lflag |= property;
117 attr.c_lflag &= ~property;
123 if (tcsetattr (STDIN_FILENO, TCSANOW, &attr) == -1)
131 ves_icall_System_ConsoleDriver_SetEcho (MonoBoolean want_echo)
134 return set_property (ECHO, want_echo);
138 ves_icall_System_ConsoleDriver_SetBreak (MonoBoolean want_break)
140 return set_property (IGNBRK, !want_break);
144 ves_icall_System_ConsoleDriver_InternalKeyAvailable (gint32 timeout)
148 struct timeval *tvptr;
154 FD_SET (STDIN_FILENO, &rfds);
156 divvy = div (timeout, 1000);
157 tv.tv_sec = divvy.quot;
158 tv.tv_usec = divvy.rem;
163 ret = select (STDIN_FILENO + 1, &rfds, NULL, NULL, tvptr);
164 } while (ret == -1 && errno == EINTR);
168 ret = ioctl (STDIN_FILENO, FIONREAD, &nbytes);
173 return (ret > 0) ? ret : 0;
176 static gint32 cols_and_lines;
180 terminal_get_dimensions (void)
184 int save_errno = errno;
186 if (ioctl (STDIN_FILENO, TIOCGWINSZ, &ws) == 0){
187 ret = (ws.ws_col << 16) | ws.ws_row;
195 terminal_get_dimensions (void)
204 int unused G_GNUC_UNUSED;
209 if (teardown_str != NULL) {
210 unused = write (STDOUT_FILENO, teardown_str, strlen (teardown_str));
211 g_free (teardown_str);
215 tcflush (STDIN_FILENO, TCIFLUSH);
216 tcsetattr (STDIN_FILENO, TCSANOW, &initial_attr);
217 set_property (ECHO, TRUE);
218 setup_finished = FALSE;
222 do_console_cancel_event (void)
224 static MonoClassField *cancel_handler_field;
226 MonoDomain *domain = mono_domain_get ();
228 MonoDelegate *load_value;
232 /* FIXME: this should likely iterate all the domains, instead */
236 klass = mono_class_try_load_from_name (mono_defaults.corlib, "System", "Console");
240 if (cancel_handler_field == NULL) {
241 cancel_handler_field = mono_class_get_field_from_name (klass, "cancel_handler");
242 g_assert (cancel_handler_field);
245 vtable = mono_class_vtable_full (domain, klass, &error);
246 if (vtable == NULL || !is_ok (&error)) {
247 mono_error_cleanup (&error);
250 mono_field_static_get_value_checked (vtable, cancel_handler_field, &load_value, &error);
251 if (load_value == NULL || !is_ok (&error)) {
252 mono_error_cleanup (&error);
256 klass = load_value->object.vtable->klass;
257 method = mono_class_get_method_from_name (klass, "BeginInvoke", -1);
258 g_assert (method != NULL);
260 mono_threadpool_ms_begin_invoke (domain, (MonoObject*) load_value, method, NULL, &error);
261 if (!is_ok (&error)) {
262 g_warning ("Couldn't invoke System.Console cancel handler due to %s", mono_error_get_message (&error));
263 mono_error_cleanup (&error);
267 static int need_cancel = FALSE;
268 /* this is executed from the finalizer thread */
270 mono_console_handle_async_ops (void)
274 do_console_cancel_event ();
278 static gboolean in_sigint;
280 MONO_SIG_HANDLER_FUNC (static, sigint_handler)
290 mono_gc_finalize_notify ();
295 static struct sigaction save_sigcont, save_sigint, save_sigwinch;
297 MONO_SIG_HANDLER_FUNC (static, sigcont_handler)
299 int unused G_GNUC_UNUSED;
300 // Ignore error, there is not much we can do in the sigcont handler.
301 tcsetattr (STDIN_FILENO, TCSANOW, &mono_attr);
303 if (keypad_xmit_str != NULL)
304 unused = write (STDOUT_FILENO, keypad_xmit_str, strlen (keypad_xmit_str));
306 // Call previous handler
307 if (save_sigcont.sa_sigaction != NULL &&
308 save_sigcont.sa_sigaction != (void *)SIG_DFL &&
309 save_sigcont.sa_sigaction != (void *)SIG_IGN)
310 (*save_sigcont.sa_sigaction) (MONO_SIG_HANDLER_PARAMS);
313 MONO_SIG_HANDLER_FUNC (static, sigwinch_handler)
315 int dims = terminal_get_dimensions ();
317 cols_and_lines = dims;
319 // Call previous handler
320 if (save_sigwinch.sa_sigaction != NULL &&
321 save_sigwinch.sa_sigaction != (void *)SIG_DFL &&
322 save_sigwinch.sa_sigaction != (void *)SIG_IGN)
323 (*save_sigwinch.sa_sigaction) (MONO_SIG_HANDLER_PARAMS);
327 * console_set_signal_handlers:
329 * Installs various signals handlers for the use of the console, as
332 * SIGCONT: this is received after the application has resumed execution
333 * if it was suspended with Control-Z before. This signal handler needs
334 * to resend the terminal sequence to send keyboard in keypad mode (this
335 * is the difference between getting a cuu1 code or a kcuu1 code for up-arrow
338 * SIGINT: invokes the System.Console.DoConsoleCancelEvent method using
339 * a thread from the thread pool which notifies all registered cancel_event
342 * SIGWINCH: is used to track changes to the console window when a GUI
343 * terminal is resized. It sets an internal variable that is checked
344 * by System.Console when the Terminfo driver has been activated.
347 console_set_signal_handlers ()
349 #if defined(HAVE_SIGACTION)
350 struct sigaction sigcont, sigint, sigwinch;
352 memset (&sigcont, 0, sizeof (struct sigaction));
353 memset (&sigint, 0, sizeof (struct sigaction));
354 memset (&sigwinch, 0, sizeof (struct sigaction));
357 sigcont.sa_handler = (void (*)(int)) sigcont_handler;
358 sigcont.sa_flags = SA_RESTART;
359 sigemptyset (&sigcont.sa_mask);
360 sigaction (SIGCONT, &sigcont, &save_sigcont);
363 sigint.sa_handler = (void (*)(int)) sigint_handler;
364 sigint.sa_flags = SA_RESTART;
365 sigemptyset (&sigint.sa_mask);
366 sigaction (SIGINT, &sigint, &save_sigint);
368 // Window size changed
369 sigwinch.sa_handler = (void (*)(int)) sigwinch_handler;
370 sigwinch.sa_flags = SA_RESTART;
371 sigemptyset (&sigwinch.sa_mask);
372 sigaction (SIGWINCH, &sigwinch, &save_sigwinch);
376 #if currently_unuused
378 // Currently unused, should we ever call the restore handler?
379 // Perhaps before calling into Process.Start?
382 console_restore_signal_handlers ()
384 sigaction (SIGCONT, &save_sigcont, NULL);
385 sigaction (SIGINT, &save_sigint, NULL);
386 sigaction (SIGWINCH, &save_sigwinch, NULL);
391 set_control_chars (MonoArray *control_chars, const guchar *cc)
393 /* The index into the array comes from corlib/System/ControlCharacters.cs */
395 mono_array_set (control_chars, gchar, 0, cc [VINTR]);
398 mono_array_set (control_chars, gchar, 1, cc [VQUIT]);
401 mono_array_set (control_chars, gchar, 2, cc [VERASE]);
404 mono_array_set (control_chars, gchar, 3, cc [VKILL]);
407 mono_array_set (control_chars, gchar, 4, cc [VEOF]);
410 mono_array_set (control_chars, gchar, 5, cc [VTIME]);
413 mono_array_set (control_chars, gchar, 6, cc [VMIN]);
416 mono_array_set (control_chars, gchar, 7, cc [VSWTC]);
419 mono_array_set (control_chars, gchar, 8, cc [VSTART]);
422 mono_array_set (control_chars, gchar, 9, cc [VSTOP]);
425 mono_array_set (control_chars, gchar, 10, cc [VSUSP]);
428 mono_array_set (control_chars, gchar, 11, cc [VEOL]);
431 mono_array_set (control_chars, gchar, 12, cc [VREPRINT]);
434 mono_array_set (control_chars, gchar, 13, cc [VDISCARD]);
437 mono_array_set (control_chars, gchar, 14, cc [VWERASE]);
440 mono_array_set (control_chars, gchar, 15, cc [VLNEXT]);
443 mono_array_set (control_chars, gchar, 16, cc [VEOL2]);
448 ves_icall_System_ConsoleDriver_TtySetup (MonoString *keypad, MonoString *teardown, MonoArray **control_chars, int **size)
454 dims = terminal_get_dimensions ();
456 int cols = 0, rows = 0;
458 const char *str = g_getenv ("COLUMNS");
461 str = g_getenv ("LINES");
465 if (cols != 0 && rows != 0)
466 cols_and_lines = (cols << 16) | rows;
470 cols_and_lines = dims;
473 *size = &cols_and_lines;
475 /* 17 is the number of entries set in set_control_chars() above.
476 * NCCS is the total size, but, by now, we only care about those 17 values*/
477 MonoArray *control_chars_arr = mono_array_new_checked (mono_domain_get (), mono_defaults.byte_class, 17, &error);
478 if (mono_error_set_pending_exception (&error))
480 mono_gc_wbarrier_generic_store (control_chars, (MonoObject*) control_chars_arr);
481 if (tcgetattr (STDIN_FILENO, &initial_attr) == -1)
484 mono_attr = initial_attr;
485 mono_attr.c_lflag &= ~(ICANON);
486 mono_attr.c_iflag &= ~(IXON|IXOFF);
487 mono_attr.c_cc [VMIN] = 1;
488 mono_attr.c_cc [VTIME] = 0;
490 /* Disable C-y being used as a suspend character on OSX */
491 mono_attr.c_cc [VDSUSP] = 255;
493 if (tcsetattr (STDIN_FILENO, TCSANOW, &mono_attr) == -1)
496 set_control_chars (*control_chars, mono_attr.c_cc);
497 /* If initialized from another appdomain... */
501 keypad_xmit_str = NULL;
502 if (keypad != NULL) {
503 keypad_xmit_str = mono_string_to_utf8_checked (keypad, &error);
504 if (mono_error_set_pending_exception (&error))
508 console_set_signal_handlers ();
509 setup_finished = TRUE;
510 if (!atexit_called) {
511 if (teardown != NULL) {
512 teardown_str = mono_string_to_utf8_checked (teardown, &error);
513 if (mono_error_set_pending_exception (&error))
517 mono_atexit (tty_teardown);
522 #endif /* #if defined(__native_client__) */