Commit | Line | Data |
---|---|---|
0ea3f30e DJ |
1 | /* Serial interface for local (hardwired) serial ports on Windows systems |
2 | ||
7b6bb8da JB |
3 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 |
4 | Free Software Foundation, Inc. | |
0ea3f30e DJ |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
0ea3f30e DJ |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
0ea3f30e DJ |
20 | |
21 | #include "defs.h" | |
22 | #include "serial.h" | |
23 | #include "ser-base.h" | |
24 | #include "ser-tcp.h" | |
25 | ||
26 | #include <windows.h> | |
c3e2b812 | 27 | #include <conio.h> |
0ea3f30e DJ |
28 | |
29 | #include <fcntl.h> | |
30 | #include <unistd.h> | |
31 | #include <sys/types.h> | |
32 | ||
33 | #include "gdb_assert.h" | |
34 | #include "gdb_string.h" | |
35 | ||
efdb2a86 PA |
36 | #include "command.h" |
37 | ||
0ea3f30e DJ |
38 | void _initialize_ser_windows (void); |
39 | ||
40 | struct ser_windows_state | |
41 | { | |
42 | int in_progress; | |
43 | OVERLAPPED ov; | |
44 | DWORD lastCommMask; | |
45 | HANDLE except_event; | |
46 | }; | |
47 | ||
48 | /* Open up a real live device for serial I/O. */ | |
49 | ||
50 | static int | |
51 | ser_windows_open (struct serial *scb, const char *name) | |
52 | { | |
53 | HANDLE h; | |
54 | struct ser_windows_state *state; | |
55 | COMMTIMEOUTS timeouts; | |
56 | ||
0ea3f30e DJ |
57 | h = CreateFile (name, GENERIC_READ | GENERIC_WRITE, 0, NULL, |
58 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); | |
59 | if (h == INVALID_HANDLE_VALUE) | |
60 | { | |
61 | errno = ENOENT; | |
62 | return -1; | |
63 | } | |
64 | ||
1be7fe8d | 65 | scb->fd = _open_osfhandle ((intptr_t) h, O_RDWR); |
0ea3f30e DJ |
66 | if (scb->fd < 0) |
67 | { | |
68 | errno = ENOENT; | |
69 | return -1; | |
70 | } | |
71 | ||
72 | if (!SetCommMask (h, EV_RXCHAR)) | |
73 | { | |
74 | errno = EINVAL; | |
75 | return -1; | |
76 | } | |
77 | ||
78 | timeouts.ReadIntervalTimeout = MAXDWORD; | |
79 | timeouts.ReadTotalTimeoutConstant = 0; | |
80 | timeouts.ReadTotalTimeoutMultiplier = 0; | |
81 | timeouts.WriteTotalTimeoutConstant = 0; | |
82 | timeouts.WriteTotalTimeoutMultiplier = 0; | |
83 | if (!SetCommTimeouts (h, &timeouts)) | |
84 | { | |
85 | errno = EINVAL; | |
86 | return -1; | |
87 | } | |
88 | ||
89 | state = xmalloc (sizeof (struct ser_windows_state)); | |
90 | memset (state, 0, sizeof (struct ser_windows_state)); | |
91 | scb->state = state; | |
92 | ||
93 | /* Create a manual reset event to watch the input buffer. */ | |
94 | state->ov.hEvent = CreateEvent (0, TRUE, FALSE, 0); | |
95 | ||
96 | /* Create a (currently unused) handle to record exceptions. */ | |
97 | state->except_event = CreateEvent (0, TRUE, FALSE, 0); | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | /* Wait for the output to drain away, as opposed to flushing (discarding) | |
103 | it. */ | |
104 | ||
105 | static int | |
106 | ser_windows_drain_output (struct serial *scb) | |
107 | { | |
108 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
109 | ||
110 | return (FlushFileBuffers (h) != 0) ? 0 : -1; | |
111 | } | |
112 | ||
113 | static int | |
114 | ser_windows_flush_output (struct serial *scb) | |
115 | { | |
116 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
117 | ||
118 | return (PurgeComm (h, PURGE_TXCLEAR) != 0) ? 0 : -1; | |
119 | } | |
120 | ||
121 | static int | |
122 | ser_windows_flush_input (struct serial *scb) | |
123 | { | |
124 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
125 | ||
126 | return (PurgeComm (h, PURGE_RXCLEAR) != 0) ? 0 : -1; | |
127 | } | |
128 | ||
129 | static int | |
130 | ser_windows_send_break (struct serial *scb) | |
131 | { | |
132 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
133 | ||
134 | if (SetCommBreak (h) == 0) | |
135 | return -1; | |
136 | ||
137 | /* Delay for 250 milliseconds. */ | |
138 | Sleep (250); | |
139 | ||
140 | if (ClearCommBreak (h)) | |
141 | return -1; | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static void | |
147 | ser_windows_raw (struct serial *scb) | |
148 | { | |
149 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
150 | DCB state; | |
151 | ||
152 | if (GetCommState (h, &state) == 0) | |
153 | return; | |
154 | ||
155 | state.fParity = FALSE; | |
156 | state.fOutxCtsFlow = FALSE; | |
157 | state.fOutxDsrFlow = FALSE; | |
158 | state.fDtrControl = DTR_CONTROL_ENABLE; | |
159 | state.fDsrSensitivity = FALSE; | |
160 | state.fOutX = FALSE; | |
161 | state.fInX = FALSE; | |
162 | state.fNull = FALSE; | |
163 | state.fAbortOnError = FALSE; | |
164 | state.ByteSize = 8; | |
165 | state.Parity = NOPARITY; | |
166 | ||
167 | scb->current_timeout = 0; | |
168 | ||
169 | if (SetCommState (h, &state) == 0) | |
170 | warning (_("SetCommState failed\n")); | |
171 | } | |
172 | ||
173 | static int | |
174 | ser_windows_setstopbits (struct serial *scb, int num) | |
175 | { | |
176 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
177 | DCB state; | |
178 | ||
179 | if (GetCommState (h, &state) == 0) | |
180 | return -1; | |
181 | ||
182 | switch (num) | |
183 | { | |
184 | case SERIAL_1_STOPBITS: | |
185 | state.StopBits = ONESTOPBIT; | |
186 | break; | |
187 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
188 | state.StopBits = ONE5STOPBITS; | |
189 | break; | |
190 | case SERIAL_2_STOPBITS: | |
191 | state.StopBits = TWOSTOPBITS; | |
192 | break; | |
193 | default: | |
194 | return 1; | |
195 | } | |
196 | ||
197 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
198 | } | |
199 | ||
200 | static int | |
201 | ser_windows_setbaudrate (struct serial *scb, int rate) | |
202 | { | |
203 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
204 | DCB state; | |
205 | ||
206 | if (GetCommState (h, &state) == 0) | |
207 | return -1; | |
208 | ||
209 | state.BaudRate = rate; | |
210 | ||
211 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
212 | } | |
213 | ||
214 | static void | |
215 | ser_windows_close (struct serial *scb) | |
216 | { | |
217 | struct ser_windows_state *state; | |
218 | ||
219 | /* Stop any pending selects. */ | |
220 | CancelIo ((HANDLE) _get_osfhandle (scb->fd)); | |
221 | state = scb->state; | |
222 | CloseHandle (state->ov.hEvent); | |
223 | CloseHandle (state->except_event); | |
224 | ||
225 | if (scb->fd < 0) | |
226 | return; | |
227 | ||
228 | close (scb->fd); | |
229 | scb->fd = -1; | |
230 | ||
231 | xfree (scb->state); | |
232 | } | |
233 | ||
234 | static void | |
235 | ser_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
236 | { | |
237 | struct ser_windows_state *state; | |
238 | COMSTAT status; | |
239 | DWORD errors; | |
240 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
241 | ||
242 | state = scb->state; | |
243 | ||
244 | *except = state->except_event; | |
245 | *read = state->ov.hEvent; | |
246 | ||
247 | if (state->in_progress) | |
248 | return; | |
249 | ||
250 | /* Reset the mask - we are only interested in any characters which | |
251 | arrive after this point, not characters which might have arrived | |
252 | and already been read. */ | |
253 | ||
254 | /* This really, really shouldn't be necessary - just the second one. | |
255 | But otherwise an internal flag for EV_RXCHAR does not get | |
256 | cleared, and we get a duplicated event, if the last batch | |
257 | of characters included at least two arriving close together. */ | |
258 | if (!SetCommMask (h, 0)) | |
259 | warning (_("ser_windows_wait_handle: reseting mask failed")); | |
260 | ||
261 | if (!SetCommMask (h, EV_RXCHAR)) | |
262 | warning (_("ser_windows_wait_handle: reseting mask failed (2)")); | |
263 | ||
264 | /* There's a potential race condition here; we must check cbInQue | |
265 | and not wait if that's nonzero. */ | |
266 | ||
267 | ClearCommError (h, &errors, &status); | |
268 | if (status.cbInQue > 0) | |
269 | { | |
270 | SetEvent (state->ov.hEvent); | |
271 | return; | |
272 | } | |
273 | ||
274 | state->in_progress = 1; | |
275 | ResetEvent (state->ov.hEvent); | |
276 | state->lastCommMask = -2; | |
277 | if (WaitCommEvent (h, &state->lastCommMask, &state->ov)) | |
278 | { | |
279 | gdb_assert (state->lastCommMask & EV_RXCHAR); | |
280 | SetEvent (state->ov.hEvent); | |
281 | } | |
282 | else | |
283 | gdb_assert (GetLastError () == ERROR_IO_PENDING); | |
284 | } | |
285 | ||
286 | static int | |
287 | ser_windows_read_prim (struct serial *scb, size_t count) | |
288 | { | |
289 | struct ser_windows_state *state; | |
290 | OVERLAPPED ov; | |
291 | DWORD bytes_read, bytes_read_tmp; | |
292 | HANDLE h; | |
293 | gdb_byte *p; | |
294 | ||
295 | state = scb->state; | |
296 | if (state->in_progress) | |
297 | { | |
298 | WaitForSingleObject (state->ov.hEvent, INFINITE); | |
299 | state->in_progress = 0; | |
300 | ResetEvent (state->ov.hEvent); | |
301 | } | |
302 | ||
303 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
304 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
305 | h = (HANDLE) _get_osfhandle (scb->fd); | |
306 | ||
307 | if (!ReadFile (h, scb->buf, /* count */ 1, &bytes_read, &ov)) | |
308 | { | |
309 | if (GetLastError () != ERROR_IO_PENDING | |
310 | || !GetOverlappedResult (h, &ov, &bytes_read, TRUE)) | |
311 | bytes_read = -1; | |
312 | } | |
313 | ||
314 | CloseHandle (ov.hEvent); | |
315 | return bytes_read; | |
316 | } | |
317 | ||
318 | static int | |
319 | ser_windows_write_prim (struct serial *scb, const void *buf, size_t len) | |
320 | { | |
321 | struct ser_windows_state *state; | |
322 | OVERLAPPED ov; | |
323 | DWORD bytes_written; | |
324 | HANDLE h; | |
325 | ||
326 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
327 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
328 | h = (HANDLE) _get_osfhandle (scb->fd); | |
329 | if (!WriteFile (h, buf, len, &bytes_written, &ov)) | |
330 | { | |
331 | if (GetLastError () != ERROR_IO_PENDING | |
332 | || !GetOverlappedResult (h, &ov, &bytes_written, TRUE)) | |
333 | bytes_written = -1; | |
334 | } | |
335 | ||
336 | CloseHandle (ov.hEvent); | |
337 | return bytes_written; | |
338 | } | |
339 | ||
4577549b DJ |
340 | /* On Windows, gdb_select is implemented using WaitForMulpleObjects. |
341 | A "select thread" is created for each file descriptor. These | |
342 | threads looks for activity on the corresponding descriptor, using | |
343 | whatever techniques are appropriate for the descriptor type. When | |
344 | that activity occurs, the thread signals an appropriate event, | |
345 | which wakes up WaitForMultipleObjects. | |
346 | ||
347 | Each select thread is in one of two states: stopped or started. | |
348 | Select threads begin in the stopped state. When gdb_select is | |
349 | called, threads corresponding to the descriptors of interest are | |
350 | started by calling a wait_handle function. Each thread that | |
351 | notices activity signals the appropriate event and then reenters | |
352 | the stopped state. Before gdb_select returns it calls the | |
353 | wait_handle_done functions, which return the threads to the stopped | |
354 | state. */ | |
355 | ||
356 | enum select_thread_state { | |
357 | STS_STARTED, | |
358 | STS_STOPPED | |
359 | }; | |
360 | ||
0ea3f30e DJ |
361 | struct ser_console_state |
362 | { | |
4577549b DJ |
363 | /* Signaled by the select thread to indicate that data is available |
364 | on the file descriptor. */ | |
0ea3f30e | 365 | HANDLE read_event; |
4577549b DJ |
366 | /* Signaled by the select thread to indicate that an exception has |
367 | occurred on the file descriptor. */ | |
0ea3f30e | 368 | HANDLE except_event; |
4577549b DJ |
369 | /* Signaled by the select thread to indicate that it has entered the |
370 | started state. HAVE_STARTED and HAVE_STOPPED are never signaled | |
371 | simultaneously. */ | |
372 | HANDLE have_started; | |
373 | /* Signaled by the select thread to indicate that it has stopped, | |
374 | either because data is available (and READ_EVENT is signaled), | |
375 | because an exception has occurred (and EXCEPT_EVENT is signaled), | |
376 | or because STOP_SELECT was signaled. */ | |
377 | HANDLE have_stopped; | |
0ea3f30e | 378 | |
4577549b DJ |
379 | /* Signaled by the main program to tell the select thread to enter |
380 | the started state. */ | |
0ea3f30e | 381 | HANDLE start_select; |
4577549b DJ |
382 | /* Signaled by the main program to tell the select thread to enter |
383 | the stopped state. */ | |
0ea3f30e | 384 | HANDLE stop_select; |
4577549b DJ |
385 | /* Signaled by the main program to tell the select thread to |
386 | exit. */ | |
c3e2b812 | 387 | HANDLE exit_select; |
c3e2b812 | 388 | |
4577549b | 389 | /* The handle for the select thread. */ |
c3e2b812 | 390 | HANDLE thread; |
4577549b DJ |
391 | /* The state of the select thread. This field is only accessed in |
392 | the main program, never by the select thread itself. */ | |
393 | enum select_thread_state thread_state; | |
0ea3f30e DJ |
394 | }; |
395 | ||
4577549b DJ |
396 | /* Called by a select thread to enter the stopped state. This |
397 | function does not return until the thread has re-entered the | |
398 | started state. */ | |
399 | static void | |
400 | select_thread_wait (struct ser_console_state *state) | |
401 | { | |
402 | HANDLE wait_events[2]; | |
403 | ||
404 | /* There are two things that can wake us up: a request that we enter | |
405 | the started state, or that we exit this thread. */ | |
406 | wait_events[0] = state->start_select; | |
407 | wait_events[1] = state->exit_select; | |
408 | if (WaitForMultipleObjects (2, wait_events, FALSE, INFINITE) | |
409 | != WAIT_OBJECT_0) | |
410 | /* Either the EXIT_SELECT event was signaled (requesting that the | |
411 | thread exit) or an error has occurred. In either case, we exit | |
412 | the thread. */ | |
413 | ExitThread (0); | |
414 | ||
415 | /* We are now in the started state. */ | |
416 | SetEvent (state->have_started); | |
417 | } | |
418 | ||
419 | typedef DWORD WINAPI (*thread_fn_type)(void *); | |
420 | ||
421 | /* Create a new select thread for SCB executing THREAD_FN. The STATE | |
422 | will be filled in by this function before return. */ | |
423 | void | |
424 | create_select_thread (thread_fn_type thread_fn, | |
425 | struct serial *scb, | |
426 | struct ser_console_state *state) | |
427 | { | |
428 | DWORD threadId; | |
429 | ||
430 | /* Create all of the events. These are all auto-reset events. */ | |
431 | state->read_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
432 | state->except_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
433 | state->have_started = CreateEvent (NULL, FALSE, FALSE, NULL); | |
434 | state->have_stopped = CreateEvent (NULL, FALSE, FALSE, NULL); | |
435 | state->start_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
436 | state->stop_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
437 | state->exit_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
438 | ||
439 | state->thread = CreateThread (NULL, 0, thread_fn, scb, 0, &threadId); | |
440 | /* The thread begins in the stopped state. */ | |
441 | state->thread_state = STS_STOPPED; | |
442 | } | |
443 | ||
444 | /* Destroy the select thread indicated by STATE. */ | |
445 | static void | |
446 | destroy_select_thread (struct ser_console_state *state) | |
447 | { | |
448 | /* Ask the thread to exit. */ | |
449 | SetEvent (state->exit_select); | |
450 | /* Wait until it does. */ | |
451 | WaitForSingleObject (state->thread, INFINITE); | |
452 | ||
453 | /* Destroy the events. */ | |
454 | CloseHandle (state->read_event); | |
455 | CloseHandle (state->except_event); | |
456 | CloseHandle (state->have_started); | |
457 | CloseHandle (state->have_stopped); | |
458 | CloseHandle (state->start_select); | |
459 | CloseHandle (state->stop_select); | |
460 | CloseHandle (state->exit_select); | |
461 | } | |
462 | ||
463 | /* Called by gdb_select to start the select thread indicated by STATE. | |
464 | This function does not return until the thread has started. */ | |
465 | static void | |
466 | start_select_thread (struct ser_console_state *state) | |
467 | { | |
468 | /* Ask the thread to start. */ | |
469 | SetEvent (state->start_select); | |
470 | /* Wait until it does. */ | |
471 | WaitForSingleObject (state->have_started, INFINITE); | |
472 | /* The thread is now started. */ | |
473 | state->thread_state = STS_STARTED; | |
474 | } | |
475 | ||
476 | /* Called by gdb_select to stop the select thread indicated by STATE. | |
477 | This function does not return until the thread has stopped. */ | |
478 | static void | |
479 | stop_select_thread (struct ser_console_state *state) | |
480 | { | |
481 | /* If the thread is already in the stopped state, we have nothing to | |
482 | do. Some of the wait_handle functions avoid calling | |
483 | start_select_thread if they notice activity on the relevant file | |
484 | descriptors. The wait_handle_done functions still call | |
485 | stop_select_thread -- but it is already stopped. */ | |
486 | if (state->thread_state != STS_STARTED) | |
487 | return; | |
488 | /* Ask the thread to stop. */ | |
489 | SetEvent (state->stop_select); | |
490 | /* Wait until it does. */ | |
491 | WaitForSingleObject (state->have_stopped, INFINITE); | |
492 | /* The thread is now stopped. */ | |
493 | state->thread_state = STS_STOPPED; | |
494 | } | |
495 | ||
0ea3f30e DJ |
496 | static DWORD WINAPI |
497 | console_select_thread (void *arg) | |
498 | { | |
499 | struct serial *scb = arg; | |
c3e2b812 DJ |
500 | struct ser_console_state *state; |
501 | int event_index; | |
0ea3f30e DJ |
502 | HANDLE h; |
503 | ||
c3e2b812 DJ |
504 | state = scb->state; |
505 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
506 | |
507 | while (1) | |
508 | { | |
509 | HANDLE wait_events[2]; | |
510 | INPUT_RECORD record; | |
511 | DWORD n_records; | |
512 | ||
4577549b | 513 | select_thread_wait (state); |
c3e2b812 | 514 | |
4577549b DJ |
515 | while (1) |
516 | { | |
517 | wait_events[0] = state->stop_select; | |
518 | wait_events[1] = h; | |
0ea3f30e | 519 | |
3e43a32a MS |
520 | event_index = WaitForMultipleObjects (2, wait_events, |
521 | FALSE, INFINITE); | |
0ea3f30e | 522 | |
4577549b DJ |
523 | if (event_index == WAIT_OBJECT_0 |
524 | || WaitForSingleObject (state->stop_select, 0) == WAIT_OBJECT_0) | |
525 | break; | |
0ea3f30e | 526 | |
4577549b DJ |
527 | if (event_index != WAIT_OBJECT_0 + 1) |
528 | { | |
529 | /* Wait must have failed; assume an error has occured, e.g. | |
530 | the handle has been closed. */ | |
531 | SetEvent (state->except_event); | |
532 | break; | |
533 | } | |
0ea3f30e | 534 | |
4577549b DJ |
535 | /* We've got a pending event on the console. See if it's |
536 | of interest. */ | |
537 | if (!PeekConsoleInput (h, &record, 1, &n_records) || n_records != 1) | |
538 | { | |
539 | /* Something went wrong. Maybe the console is gone. */ | |
540 | SetEvent (state->except_event); | |
541 | break; | |
542 | } | |
0ea3f30e | 543 | |
4577549b | 544 | if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) |
c3e2b812 | 545 | { |
4577549b DJ |
546 | WORD keycode = record.Event.KeyEvent.wVirtualKeyCode; |
547 | ||
548 | /* Ignore events containing only control keys. We must | |
549 | recognize "enhanced" keys which we are interested in | |
550 | reading via getch, if they do not map to ASCII. But we | |
551 | do not want to report input available for e.g. the | |
552 | control key alone. */ | |
553 | ||
554 | if (record.Event.KeyEvent.uChar.AsciiChar != 0 | |
555 | || keycode == VK_PRIOR | |
556 | || keycode == VK_NEXT | |
557 | || keycode == VK_END | |
558 | || keycode == VK_HOME | |
559 | || keycode == VK_LEFT | |
560 | || keycode == VK_UP | |
561 | || keycode == VK_RIGHT | |
562 | || keycode == VK_DOWN | |
563 | || keycode == VK_INSERT | |
564 | || keycode == VK_DELETE) | |
565 | { | |
566 | /* This is really a keypress. */ | |
567 | SetEvent (state->read_event); | |
568 | break; | |
569 | } | |
c3e2b812 | 570 | } |
4577549b DJ |
571 | |
572 | /* Otherwise discard it and wait again. */ | |
573 | ReadConsoleInput (h, &record, 1, &n_records); | |
0ea3f30e DJ |
574 | } |
575 | ||
4577549b | 576 | SetEvent(state->have_stopped); |
0ea3f30e | 577 | } |
a32d7317 | 578 | return 0; |
0ea3f30e DJ |
579 | } |
580 | ||
581 | static int | |
582 | fd_is_pipe (int fd) | |
583 | { | |
584 | if (PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, NULL, NULL)) | |
585 | return 1; | |
586 | else | |
587 | return 0; | |
588 | } | |
589 | ||
7e71daaa JG |
590 | static int |
591 | fd_is_file (int fd) | |
592 | { | |
593 | if (GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_DISK) | |
594 | return 1; | |
595 | else | |
596 | return 0; | |
597 | } | |
598 | ||
0ea3f30e DJ |
599 | static DWORD WINAPI |
600 | pipe_select_thread (void *arg) | |
601 | { | |
602 | struct serial *scb = arg; | |
c3e2b812 DJ |
603 | struct ser_console_state *state; |
604 | int event_index; | |
0ea3f30e DJ |
605 | HANDLE h; |
606 | ||
c3e2b812 DJ |
607 | state = scb->state; |
608 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
609 | |
610 | while (1) | |
611 | { | |
0ea3f30e DJ |
612 | DWORD n_avail; |
613 | ||
4577549b | 614 | select_thread_wait (state); |
c3e2b812 | 615 | |
4577549b DJ |
616 | /* Wait for something to happen on the pipe. */ |
617 | while (1) | |
0ea3f30e | 618 | { |
4577549b DJ |
619 | if (!PeekNamedPipe (h, NULL, 0, NULL, &n_avail, NULL)) |
620 | { | |
621 | SetEvent (state->except_event); | |
622 | break; | |
623 | } | |
0ea3f30e | 624 | |
4577549b DJ |
625 | if (n_avail > 0) |
626 | { | |
627 | SetEvent (state->read_event); | |
628 | break; | |
629 | } | |
0ea3f30e | 630 | |
4577549b DJ |
631 | /* Delay 10ms before checking again, but allow the stop |
632 | event to wake us. */ | |
633 | if (WaitForSingleObject (state->stop_select, 10) == WAIT_OBJECT_0) | |
634 | break; | |
635 | } | |
0ea3f30e | 636 | |
4577549b | 637 | SetEvent (state->have_stopped); |
0ea3f30e | 638 | } |
a32d7317 | 639 | return 0; |
0ea3f30e DJ |
640 | } |
641 | ||
7e71daaa JG |
642 | static DWORD WINAPI |
643 | file_select_thread (void *arg) | |
644 | { | |
645 | struct serial *scb = arg; | |
646 | struct ser_console_state *state; | |
647 | int event_index; | |
648 | HANDLE h; | |
649 | ||
650 | state = scb->state; | |
651 | h = (HANDLE) _get_osfhandle (scb->fd); | |
652 | ||
653 | while (1) | |
654 | { | |
4577549b | 655 | select_thread_wait (state); |
7e71daaa | 656 | |
3e43a32a MS |
657 | if (SetFilePointer (h, 0, NULL, FILE_CURRENT) |
658 | == INVALID_SET_FILE_POINTER) | |
4577549b DJ |
659 | SetEvent (state->except_event); |
660 | else | |
661 | SetEvent (state->read_event); | |
7e71daaa | 662 | |
4577549b | 663 | SetEvent (state->have_stopped); |
7e71daaa | 664 | } |
a32d7317 | 665 | return 0; |
7e71daaa JG |
666 | } |
667 | ||
0ea3f30e DJ |
668 | static void |
669 | ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
670 | { | |
671 | struct ser_console_state *state = scb->state; | |
672 | ||
673 | if (state == NULL) | |
674 | { | |
4577549b | 675 | thread_fn_type thread_fn; |
0ea3f30e DJ |
676 | int is_tty; |
677 | ||
678 | is_tty = isatty (scb->fd); | |
7e71daaa | 679 | if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd)) |
0ea3f30e DJ |
680 | { |
681 | *read = NULL; | |
682 | *except = NULL; | |
683 | return; | |
684 | } | |
685 | ||
686 | state = xmalloc (sizeof (struct ser_console_state)); | |
687 | memset (state, 0, sizeof (struct ser_console_state)); | |
688 | scb->state = state; | |
689 | ||
0ea3f30e | 690 | if (is_tty) |
4577549b | 691 | thread_fn = console_select_thread; |
7e71daaa | 692 | else if (fd_is_pipe (scb->fd)) |
4577549b | 693 | thread_fn = pipe_select_thread; |
7e71daaa | 694 | else |
4577549b DJ |
695 | thread_fn = file_select_thread; |
696 | ||
697 | create_select_thread (thread_fn, scb, state); | |
0ea3f30e DJ |
698 | } |
699 | ||
c3e2b812 DJ |
700 | *read = state->read_event; |
701 | *except = state->except_event; | |
702 | ||
703 | /* Start from a blank state. */ | |
0ea3f30e DJ |
704 | ResetEvent (state->read_event); |
705 | ResetEvent (state->except_event); | |
c3e2b812 DJ |
706 | ResetEvent (state->stop_select); |
707 | ||
708 | /* First check for a key already in the buffer. If there is one, | |
709 | we don't need a thread. This also catches the second key of | |
710 | multi-character returns from getch, for instance for arrow | |
711 | keys. The second half is in a C library internal buffer, | |
712 | and PeekConsoleInput will not find it. */ | |
713 | if (_kbhit ()) | |
714 | { | |
715 | SetEvent (state->read_event); | |
716 | return; | |
717 | } | |
0ea3f30e | 718 | |
c3e2b812 | 719 | /* Otherwise, start the select thread. */ |
4577549b | 720 | start_select_thread (state); |
c3e2b812 | 721 | } |
0ea3f30e | 722 | |
c3e2b812 DJ |
723 | static void |
724 | ser_console_done_wait_handle (struct serial *scb) | |
725 | { | |
726 | struct ser_console_state *state = scb->state; | |
727 | ||
728 | if (state == NULL) | |
729 | return; | |
730 | ||
4577549b | 731 | stop_select_thread (state); |
0ea3f30e DJ |
732 | } |
733 | ||
734 | static void | |
735 | ser_console_close (struct serial *scb) | |
736 | { | |
737 | struct ser_console_state *state = scb->state; | |
738 | ||
739 | if (scb->state) | |
740 | { | |
4577549b | 741 | destroy_select_thread (state); |
0ea3f30e DJ |
742 | xfree (scb->state); |
743 | } | |
744 | } | |
745 | ||
746 | struct ser_console_ttystate | |
747 | { | |
748 | int is_a_tty; | |
749 | }; | |
750 | ||
751 | static serial_ttystate | |
752 | ser_console_get_tty_state (struct serial *scb) | |
753 | { | |
754 | if (isatty (scb->fd)) | |
755 | { | |
756 | struct ser_console_ttystate *state; | |
433759f7 | 757 | |
0ea3f30e DJ |
758 | state = (struct ser_console_ttystate *) xmalloc (sizeof *state); |
759 | state->is_a_tty = 1; | |
760 | return state; | |
761 | } | |
762 | else | |
763 | return NULL; | |
764 | } | |
765 | ||
5f1fb6dc JB |
766 | struct pipe_state |
767 | { | |
768 | /* Since we use the pipe_select_thread for our select emulation, | |
769 | we need to place the state structure it requires at the front | |
770 | of our state. */ | |
771 | struct ser_console_state wait; | |
772 | ||
773 | /* The pex obj for our (one-stage) pipeline. */ | |
774 | struct pex_obj *pex; | |
775 | ||
776 | /* Streams for the pipeline's input and output. */ | |
777 | FILE *input, *output; | |
778 | }; | |
779 | ||
780 | static struct pipe_state * | |
781 | make_pipe_state (void) | |
782 | { | |
783 | struct pipe_state *ps = XMALLOC (struct pipe_state); | |
784 | ||
785 | memset (ps, 0, sizeof (*ps)); | |
786 | ps->wait.read_event = INVALID_HANDLE_VALUE; | |
787 | ps->wait.except_event = INVALID_HANDLE_VALUE; | |
788 | ps->wait.start_select = INVALID_HANDLE_VALUE; | |
789 | ps->wait.stop_select = INVALID_HANDLE_VALUE; | |
790 | ||
791 | return ps; | |
792 | } | |
793 | ||
794 | static void | |
795 | free_pipe_state (struct pipe_state *ps) | |
796 | { | |
797 | int saved_errno = errno; | |
798 | ||
799 | if (ps->wait.read_event != INVALID_HANDLE_VALUE) | |
4577549b | 800 | destroy_select_thread (&ps->wait); |
5f1fb6dc JB |
801 | |
802 | /* Close the pipe to the child. We must close the pipe before | |
803 | calling pex_free because pex_free will wait for the child to exit | |
804 | and the child will not exit until the pipe is closed. */ | |
805 | if (ps->input) | |
806 | fclose (ps->input); | |
807 | if (ps->pex) | |
58f07bae PA |
808 | { |
809 | pex_free (ps->pex); | |
810 | /* pex_free closes ps->output. */ | |
811 | } | |
812 | else if (ps->output) | |
813 | fclose (ps->output); | |
5f1fb6dc JB |
814 | |
815 | xfree (ps); | |
816 | ||
817 | errno = saved_errno; | |
818 | } | |
819 | ||
820 | static void | |
821 | cleanup_pipe_state (void *untyped) | |
822 | { | |
823 | struct pipe_state *ps = untyped; | |
824 | ||
825 | free_pipe_state (ps); | |
826 | } | |
827 | ||
828 | static int | |
829 | pipe_windows_open (struct serial *scb, const char *name) | |
830 | { | |
ef7723eb | 831 | struct pipe_state *ps; |
65cc4390 | 832 | FILE *pex_stderr; |
efdb2a86 PA |
833 | char **argv; |
834 | struct cleanup *back_to; | |
ef7723eb | 835 | |
d1a41061 PP |
836 | if (name == NULL) |
837 | error_no_arg (_("child command")); | |
838 | ||
efdb2a86 PA |
839 | argv = gdb_buildargv (name); |
840 | back_to = make_cleanup_freeargv (argv); | |
d1a41061 | 841 | |
5f1fb6dc JB |
842 | if (! argv[0] || argv[0][0] == '\0') |
843 | error ("missing child command"); | |
844 | ||
ef7723eb | 845 | ps = make_pipe_state (); |
5f1fb6dc JB |
846 | make_cleanup (cleanup_pipe_state, ps); |
847 | ||
848 | ps->pex = pex_init (PEX_USE_PIPES, "target remote pipe", NULL); | |
849 | if (! ps->pex) | |
850 | goto fail; | |
851 | ps->input = pex_input_pipe (ps->pex, 1); | |
852 | if (! ps->input) | |
853 | goto fail; | |
854 | ||
855 | { | |
856 | int err; | |
857 | const char *err_msg | |
65cc4390 VP |
858 | = pex_run (ps->pex, PEX_SEARCH | PEX_BINARY_INPUT | PEX_BINARY_OUTPUT |
859 | | PEX_STDERR_TO_PIPE, | |
5f1fb6dc JB |
860 | argv[0], argv, NULL, NULL, |
861 | &err); | |
862 | ||
863 | if (err_msg) | |
864 | { | |
865 | /* Our caller expects us to return -1, but all they'll do with | |
866 | it generally is print the message based on errno. We have | |
867 | all the same information here, plus err_msg provided by | |
868 | pex_run, so we just raise the error here. */ | |
869 | if (err) | |
870 | error ("error starting child process '%s': %s: %s", | |
871 | name, err_msg, safe_strerror (err)); | |
872 | else | |
873 | error ("error starting child process '%s': %s", | |
874 | name, err_msg); | |
875 | } | |
876 | } | |
877 | ||
878 | ps->output = pex_read_output (ps->pex, 1); | |
879 | if (! ps->output) | |
880 | goto fail; | |
5f1fb6dc | 881 | scb->fd = fileno (ps->output); |
65cc4390 VP |
882 | |
883 | pex_stderr = pex_read_err (ps->pex, 1); | |
884 | if (! pex_stderr) | |
885 | goto fail; | |
886 | scb->error_fd = fileno (pex_stderr); | |
887 | ||
5f1fb6dc JB |
888 | scb->state = (void *) ps; |
889 | ||
890 | discard_cleanups (back_to); | |
891 | return 0; | |
892 | ||
893 | fail: | |
894 | do_cleanups (back_to); | |
895 | return -1; | |
896 | } | |
897 | ||
58f07bae PA |
898 | static int |
899 | pipe_windows_fdopen (struct serial *scb, int fd) | |
900 | { | |
901 | struct pipe_state *ps; | |
902 | ||
903 | ps = make_pipe_state (); | |
904 | ||
905 | ps->input = fdopen (fd, "r+"); | |
906 | if (! ps->input) | |
907 | goto fail; | |
908 | ||
909 | ps->output = fdopen (fd, "r+"); | |
910 | if (! ps->output) | |
911 | goto fail; | |
912 | ||
913 | scb->fd = fd; | |
914 | scb->state = (void *) ps; | |
915 | ||
916 | return 0; | |
917 | ||
918 | fail: | |
919 | free_pipe_state (ps); | |
920 | return -1; | |
921 | } | |
5f1fb6dc JB |
922 | |
923 | static void | |
924 | pipe_windows_close (struct serial *scb) | |
925 | { | |
926 | struct pipe_state *ps = scb->state; | |
927 | ||
928 | /* In theory, we should try to kill the subprocess here, but the pex | |
929 | interface doesn't give us enough information to do that. Usually | |
930 | closing the input pipe will get the message across. */ | |
931 | ||
932 | free_pipe_state (ps); | |
933 | } | |
934 | ||
935 | ||
936 | static int | |
937 | pipe_windows_read (struct serial *scb, size_t count) | |
938 | { | |
4998c1df | 939 | HANDLE pipeline_out = (HANDLE) _get_osfhandle (scb->fd); |
ef7723eb VP |
940 | DWORD available; |
941 | DWORD bytes_read; | |
942 | ||
5f1fb6dc JB |
943 | if (pipeline_out == INVALID_HANDLE_VALUE) |
944 | return -1; | |
945 | ||
5f1fb6dc JB |
946 | if (! PeekNamedPipe (pipeline_out, NULL, 0, NULL, &available, NULL)) |
947 | return -1; | |
948 | ||
949 | if (count > available) | |
950 | count = available; | |
951 | ||
5f1fb6dc JB |
952 | if (! ReadFile (pipeline_out, scb->buf, count, &bytes_read, NULL)) |
953 | return -1; | |
954 | ||
955 | return bytes_read; | |
956 | } | |
957 | ||
958 | ||
959 | static int | |
960 | pipe_windows_write (struct serial *scb, const void *buf, size_t count) | |
961 | { | |
962 | struct pipe_state *ps = scb->state; | |
ef7723eb VP |
963 | HANDLE pipeline_in; |
964 | DWORD written; | |
965 | ||
5f1fb6dc JB |
966 | int pipeline_in_fd = fileno (ps->input); |
967 | if (pipeline_in_fd < 0) | |
968 | return -1; | |
969 | ||
ef7723eb | 970 | pipeline_in = (HANDLE) _get_osfhandle (pipeline_in_fd); |
5f1fb6dc JB |
971 | if (pipeline_in == INVALID_HANDLE_VALUE) |
972 | return -1; | |
973 | ||
5f1fb6dc JB |
974 | if (! WriteFile (pipeline_in, buf, count, &written, NULL)) |
975 | return -1; | |
976 | ||
977 | return written; | |
978 | } | |
979 | ||
980 | ||
981 | static void | |
982 | pipe_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
983 | { | |
984 | struct pipe_state *ps = scb->state; | |
985 | ||
986 | /* Have we allocated our events yet? */ | |
987 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
4577549b DJ |
988 | /* Start the thread. */ |
989 | create_select_thread (pipe_select_thread, scb, &ps->wait); | |
5f1fb6dc | 990 | |
774a49c0 DJ |
991 | *read = ps->wait.read_event; |
992 | *except = ps->wait.except_event; | |
993 | ||
994 | /* Start from a blank state. */ | |
5f1fb6dc JB |
995 | ResetEvent (ps->wait.read_event); |
996 | ResetEvent (ps->wait.except_event); | |
774a49c0 | 997 | ResetEvent (ps->wait.stop_select); |
5f1fb6dc | 998 | |
4577549b | 999 | start_select_thread (&ps->wait); |
5f1fb6dc JB |
1000 | } |
1001 | ||
774a49c0 DJ |
1002 | static void |
1003 | pipe_done_wait_handle (struct serial *scb) | |
1004 | { | |
1005 | struct pipe_state *ps = scb->state; | |
1006 | ||
1007 | /* Have we allocated our events yet? */ | |
1008 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
1009 | return; | |
1010 | ||
4577549b | 1011 | stop_select_thread (&ps->wait); |
774a49c0 | 1012 | } |
5f1fb6dc | 1013 | |
65cc4390 VP |
1014 | static int |
1015 | pipe_avail (struct serial *scb, int fd) | |
1016 | { | |
1017 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
1018 | DWORD numBytes; | |
1019 | BOOL r = PeekNamedPipe (h, NULL, 0, NULL, &numBytes, NULL); | |
433759f7 | 1020 | |
65cc4390 VP |
1021 | if (r == FALSE) |
1022 | numBytes = 0; | |
1023 | return numBytes; | |
1024 | } | |
1025 | ||
58f07bae PA |
1026 | int |
1027 | gdb_pipe (int pdes[2]) | |
1028 | { | |
1029 | if (_pipe (pdes, 512, _O_BINARY | _O_NOINHERIT) == -1) | |
1030 | return -1; | |
1031 | return 0; | |
1032 | } | |
1033 | ||
0ea3f30e DJ |
1034 | struct net_windows_state |
1035 | { | |
4577549b DJ |
1036 | struct ser_console_state base; |
1037 | ||
0ea3f30e DJ |
1038 | HANDLE sock_event; |
1039 | }; | |
1040 | ||
1041 | static DWORD WINAPI | |
1042 | net_windows_select_thread (void *arg) | |
1043 | { | |
1044 | struct serial *scb = arg; | |
4577549b | 1045 | struct net_windows_state *state; |
c3e2b812 | 1046 | int event_index; |
0ea3f30e | 1047 | |
c3e2b812 | 1048 | state = scb->state; |
0ea3f30e DJ |
1049 | |
1050 | while (1) | |
1051 | { | |
1052 | HANDLE wait_events[2]; | |
1053 | WSANETWORKEVENTS events; | |
1054 | ||
4577549b | 1055 | select_thread_wait (&state->base); |
c3e2b812 | 1056 | |
4577549b | 1057 | wait_events[0] = state->base.stop_select; |
0ea3f30e DJ |
1058 | wait_events[1] = state->sock_event; |
1059 | ||
1060 | event_index = WaitForMultipleObjects (2, wait_events, FALSE, INFINITE); | |
1061 | ||
1062 | if (event_index == WAIT_OBJECT_0 | |
4577549b DJ |
1063 | || WaitForSingleObject (state->base.stop_select, 0) == WAIT_OBJECT_0) |
1064 | /* We have been requested to stop. */ | |
1065 | ; | |
1066 | else if (event_index != WAIT_OBJECT_0 + 1) | |
1067 | /* Some error has occured. Assume that this is an error | |
1068 | condition. */ | |
1069 | SetEvent (state->base.except_event); | |
1070 | else | |
0ea3f30e | 1071 | { |
4577549b DJ |
1072 | /* Enumerate the internal network events, and reset the |
1073 | object that signalled us to catch the next event. */ | |
1074 | WSAEnumNetworkEvents (scb->fd, state->sock_event, &events); | |
1075 | ||
1076 | gdb_assert (events.lNetworkEvents & (FD_READ | FD_CLOSE)); | |
1077 | ||
1078 | if (events.lNetworkEvents & FD_READ) | |
1079 | SetEvent (state->base.read_event); | |
1080 | ||
1081 | if (events.lNetworkEvents & FD_CLOSE) | |
1082 | SetEvent (state->base.except_event); | |
0ea3f30e DJ |
1083 | } |
1084 | ||
4577549b | 1085 | SetEvent (state->base.have_stopped); |
0ea3f30e DJ |
1086 | } |
1087 | } | |
1088 | ||
1089 | static void | |
1090 | net_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1091 | { | |
1092 | struct net_windows_state *state = scb->state; | |
1093 | ||
c3e2b812 | 1094 | /* Start from a clean slate. */ |
4577549b DJ |
1095 | ResetEvent (state->base.read_event); |
1096 | ResetEvent (state->base.except_event); | |
1097 | ResetEvent (state->base.stop_select); | |
0ea3f30e | 1098 | |
4577549b DJ |
1099 | *read = state->base.read_event; |
1100 | *except = state->base.except_event; | |
c3e2b812 DJ |
1101 | |
1102 | /* Check any pending events. This both avoids starting the thread | |
1103 | unnecessarily, and handles stray FD_READ events (see below). */ | |
1104 | if (WaitForSingleObject (state->sock_event, 0) == WAIT_OBJECT_0) | |
1105 | { | |
1106 | WSANETWORKEVENTS events; | |
1107 | int any = 0; | |
1108 | ||
1109 | /* Enumerate the internal network events, and reset the object that | |
1110 | signalled us to catch the next event. */ | |
1111 | WSAEnumNetworkEvents (scb->fd, state->sock_event, &events); | |
1112 | ||
1113 | /* You'd think that FD_READ or FD_CLOSE would be set here. But, | |
1114 | sometimes, neither is. I suspect that the FD_READ is set and | |
1115 | the corresponding event signalled while recv is running, and | |
1116 | the FD_READ is then lowered when recv consumes all the data, | |
1117 | but there's no way to un-signal the event. This isn't a | |
1118 | problem for the call in net_select_thread, since any new | |
1119 | events after this point will not have been drained by recv. | |
1120 | It just means that we can't have the obvious assert here. */ | |
1121 | ||
1122 | /* If there is a read event, it might be still valid, or it might | |
1123 | not be - it may have been signalled before we last called | |
1124 | recv. Double-check that there is data. */ | |
1125 | if (events.lNetworkEvents & FD_READ) | |
1126 | { | |
1127 | unsigned long available; | |
1128 | ||
1129 | if (ioctlsocket (scb->fd, FIONREAD, &available) == 0 | |
1130 | && available > 0) | |
1131 | { | |
4577549b | 1132 | SetEvent (state->base.read_event); |
c3e2b812 DJ |
1133 | any = 1; |
1134 | } | |
1135 | else | |
1136 | /* Oops, no data. This call to recv will cause future | |
1137 | data to retrigger the event, e.g. while we are | |
1138 | in net_select_thread. */ | |
1139 | recv (scb->fd, NULL, 0, 0); | |
1140 | } | |
1141 | ||
1142 | /* If there's a close event, then record it - it is obviously | |
1143 | still valid, and it will not be resignalled. */ | |
1144 | if (events.lNetworkEvents & FD_CLOSE) | |
1145 | { | |
4577549b | 1146 | SetEvent (state->base.except_event); |
c3e2b812 DJ |
1147 | any = 1; |
1148 | } | |
1149 | ||
1150 | /* If we set either handle, there's no need to wake the thread. */ | |
1151 | if (any) | |
1152 | return; | |
1153 | } | |
1154 | ||
4577549b | 1155 | start_select_thread (&state->base); |
c3e2b812 DJ |
1156 | } |
1157 | ||
1158 | static void | |
1159 | net_windows_done_wait_handle (struct serial *scb) | |
1160 | { | |
1161 | struct net_windows_state *state = scb->state; | |
1162 | ||
4577549b | 1163 | stop_select_thread (&state->base); |
0ea3f30e DJ |
1164 | } |
1165 | ||
1166 | static int | |
1167 | net_windows_open (struct serial *scb, const char *name) | |
1168 | { | |
1169 | struct net_windows_state *state; | |
1170 | int ret; | |
1171 | DWORD threadId; | |
1172 | ||
1173 | ret = net_open (scb, name); | |
1174 | if (ret != 0) | |
1175 | return ret; | |
1176 | ||
1177 | state = xmalloc (sizeof (struct net_windows_state)); | |
1178 | memset (state, 0, sizeof (struct net_windows_state)); | |
1179 | scb->state = state; | |
1180 | ||
0ea3f30e DJ |
1181 | /* Associate an event with the socket. */ |
1182 | state->sock_event = CreateEvent (0, TRUE, FALSE, 0); | |
1183 | WSAEventSelect (scb->fd, state->sock_event, FD_READ | FD_CLOSE); | |
1184 | ||
4577549b DJ |
1185 | /* Start the thread. */ |
1186 | create_select_thread (net_windows_select_thread, scb, &state->base); | |
0ea3f30e DJ |
1187 | |
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | ||
1192 | static void | |
1193 | net_windows_close (struct serial *scb) | |
1194 | { | |
1195 | struct net_windows_state *state = scb->state; | |
1196 | ||
4577549b | 1197 | destroy_select_thread (&state->base); |
0ea3f30e DJ |
1198 | CloseHandle (state->sock_event); |
1199 | ||
1200 | xfree (scb->state); | |
1201 | ||
1202 | net_close (scb); | |
1203 | } | |
1204 | ||
1205 | void | |
1206 | _initialize_ser_windows (void) | |
1207 | { | |
1208 | WSADATA wsa_data; | |
1209 | struct serial_ops *ops; | |
1210 | ||
1211 | /* First register the serial port driver. */ | |
1212 | ||
1213 | ops = XMALLOC (struct serial_ops); | |
1214 | memset (ops, 0, sizeof (struct serial_ops)); | |
1215 | ops->name = "hardwire"; | |
1216 | ops->next = 0; | |
1217 | ops->open = ser_windows_open; | |
1218 | ops->close = ser_windows_close; | |
1219 | ||
1220 | ops->flush_output = ser_windows_flush_output; | |
1221 | ops->flush_input = ser_windows_flush_input; | |
1222 | ops->send_break = ser_windows_send_break; | |
1223 | ||
1224 | /* These are only used for stdin; we do not need them for serial | |
1225 | ports, so supply the standard dummies. */ | |
1226 | ops->get_tty_state = ser_base_get_tty_state; | |
1227 | ops->set_tty_state = ser_base_set_tty_state; | |
1228 | ops->print_tty_state = ser_base_print_tty_state; | |
1229 | ops->noflush_set_tty_state = ser_base_noflush_set_tty_state; | |
1230 | ||
1231 | ops->go_raw = ser_windows_raw; | |
1232 | ops->setbaudrate = ser_windows_setbaudrate; | |
1233 | ops->setstopbits = ser_windows_setstopbits; | |
1234 | ops->drain_output = ser_windows_drain_output; | |
1235 | ops->readchar = ser_base_readchar; | |
1236 | ops->write = ser_base_write; | |
1237 | ops->async = ser_base_async; | |
1238 | ops->read_prim = ser_windows_read_prim; | |
1239 | ops->write_prim = ser_windows_write_prim; | |
1240 | ops->wait_handle = ser_windows_wait_handle; | |
1241 | ||
1242 | serial_add_interface (ops); | |
1243 | ||
1244 | /* Next create the dummy serial driver used for terminals. We only | |
1245 | provide the TTY-related methods. */ | |
1246 | ||
1247 | ops = XMALLOC (struct serial_ops); | |
1248 | memset (ops, 0, sizeof (struct serial_ops)); | |
1249 | ||
1250 | ops->name = "terminal"; | |
1251 | ops->next = 0; | |
1252 | ||
1253 | ops->close = ser_console_close; | |
1254 | ops->get_tty_state = ser_console_get_tty_state; | |
1255 | ops->set_tty_state = ser_base_set_tty_state; | |
1256 | ops->print_tty_state = ser_base_print_tty_state; | |
1257 | ops->noflush_set_tty_state = ser_base_noflush_set_tty_state; | |
1258 | ops->drain_output = ser_base_drain_output; | |
1259 | ops->wait_handle = ser_console_wait_handle; | |
c3e2b812 | 1260 | ops->done_wait_handle = ser_console_done_wait_handle; |
0ea3f30e DJ |
1261 | |
1262 | serial_add_interface (ops); | |
1263 | ||
5f1fb6dc JB |
1264 | /* The pipe interface. */ |
1265 | ||
1266 | ops = XMALLOC (struct serial_ops); | |
1267 | memset (ops, 0, sizeof (struct serial_ops)); | |
1268 | ops->name = "pipe"; | |
1269 | ops->next = 0; | |
1270 | ops->open = pipe_windows_open; | |
1271 | ops->close = pipe_windows_close; | |
58f07bae | 1272 | ops->fdopen = pipe_windows_fdopen; |
5f1fb6dc JB |
1273 | ops->readchar = ser_base_readchar; |
1274 | ops->write = ser_base_write; | |
1275 | ops->flush_output = ser_base_flush_output; | |
1276 | ops->flush_input = ser_base_flush_input; | |
1277 | ops->send_break = ser_base_send_break; | |
1278 | ops->go_raw = ser_base_raw; | |
1279 | ops->get_tty_state = ser_base_get_tty_state; | |
1280 | ops->set_tty_state = ser_base_set_tty_state; | |
1281 | ops->print_tty_state = ser_base_print_tty_state; | |
1282 | ops->noflush_set_tty_state = ser_base_noflush_set_tty_state; | |
1283 | ops->setbaudrate = ser_base_setbaudrate; | |
1284 | ops->setstopbits = ser_base_setstopbits; | |
1285 | ops->drain_output = ser_base_drain_output; | |
1286 | ops->async = ser_base_async; | |
1287 | ops->read_prim = pipe_windows_read; | |
1288 | ops->write_prim = pipe_windows_write; | |
1289 | ops->wait_handle = pipe_wait_handle; | |
774a49c0 | 1290 | ops->done_wait_handle = pipe_done_wait_handle; |
65cc4390 | 1291 | ops->avail = pipe_avail; |
5f1fb6dc JB |
1292 | |
1293 | serial_add_interface (ops); | |
1294 | ||
0ea3f30e DJ |
1295 | /* If WinSock works, register the TCP/UDP socket driver. */ |
1296 | ||
1297 | if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0) | |
1298 | /* WinSock is unavailable. */ | |
1299 | return; | |
1300 | ||
1301 | ops = XMALLOC (struct serial_ops); | |
1302 | memset (ops, 0, sizeof (struct serial_ops)); | |
1303 | ops->name = "tcp"; | |
1304 | ops->next = 0; | |
1305 | ops->open = net_windows_open; | |
1306 | ops->close = net_windows_close; | |
1307 | ops->readchar = ser_base_readchar; | |
1308 | ops->write = ser_base_write; | |
1309 | ops->flush_output = ser_base_flush_output; | |
1310 | ops->flush_input = ser_base_flush_input; | |
8775bb90 | 1311 | ops->send_break = ser_tcp_send_break; |
0ea3f30e DJ |
1312 | ops->go_raw = ser_base_raw; |
1313 | ops->get_tty_state = ser_base_get_tty_state; | |
1314 | ops->set_tty_state = ser_base_set_tty_state; | |
1315 | ops->print_tty_state = ser_base_print_tty_state; | |
1316 | ops->noflush_set_tty_state = ser_base_noflush_set_tty_state; | |
1317 | ops->setbaudrate = ser_base_setbaudrate; | |
1318 | ops->setstopbits = ser_base_setstopbits; | |
1319 | ops->drain_output = ser_base_drain_output; | |
1320 | ops->async = ser_base_async; | |
1321 | ops->read_prim = net_read_prim; | |
1322 | ops->write_prim = net_write_prim; | |
1323 | ops->wait_handle = net_windows_wait_handle; | |
c3e2b812 | 1324 | ops->done_wait_handle = net_windows_done_wait_handle; |
0ea3f30e DJ |
1325 | serial_add_interface (ops); |
1326 | } |