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0ea3f30e DJ |
1 | /* Serial interface for local (hardwired) serial ports on Windows systems |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
0ea3f30e DJ |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
0ea3f30e DJ |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
0ea3f30e DJ |
19 | |
20 | #include "defs.h" | |
21 | #include "serial.h" | |
22 | #include "ser-base.h" | |
23 | #include "ser-tcp.h" | |
24 | ||
25 | #include <windows.h> | |
c3e2b812 | 26 | #include <conio.h> |
0ea3f30e DJ |
27 | |
28 | #include <fcntl.h> | |
29 | #include <unistd.h> | |
30 | #include <sys/types.h> | |
31 | ||
efdb2a86 PA |
32 | #include "command.h" |
33 | ||
0ea3f30e DJ |
34 | void _initialize_ser_windows (void); |
35 | ||
36 | struct ser_windows_state | |
37 | { | |
38 | int in_progress; | |
39 | OVERLAPPED ov; | |
40 | DWORD lastCommMask; | |
41 | HANDLE except_event; | |
42 | }; | |
43 | ||
4af53f97 PM |
44 | /* CancelIo is not available for Windows 95 OS, so we need to use |
45 | LoadLibrary/GetProcAddress to avoid a startup failure. */ | |
46 | #define CancelIo dyn_CancelIo | |
47 | static BOOL WINAPI (*CancelIo) (HANDLE); | |
48 | ||
0ea3f30e DJ |
49 | /* Open up a real live device for serial I/O. */ |
50 | ||
51 | static int | |
52 | ser_windows_open (struct serial *scb, const char *name) | |
53 | { | |
54 | HANDLE h; | |
55 | struct ser_windows_state *state; | |
56 | COMMTIMEOUTS timeouts; | |
57 | ||
0ea3f30e DJ |
58 | h = CreateFile (name, GENERIC_READ | GENERIC_WRITE, 0, NULL, |
59 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); | |
60 | if (h == INVALID_HANDLE_VALUE) | |
61 | { | |
62 | errno = ENOENT; | |
63 | return -1; | |
64 | } | |
65 | ||
1be7fe8d | 66 | scb->fd = _open_osfhandle ((intptr_t) h, O_RDWR); |
0ea3f30e DJ |
67 | if (scb->fd < 0) |
68 | { | |
69 | errno = ENOENT; | |
70 | return -1; | |
71 | } | |
72 | ||
73 | if (!SetCommMask (h, EV_RXCHAR)) | |
74 | { | |
75 | errno = EINVAL; | |
76 | return -1; | |
77 | } | |
78 | ||
79 | timeouts.ReadIntervalTimeout = MAXDWORD; | |
80 | timeouts.ReadTotalTimeoutConstant = 0; | |
81 | timeouts.ReadTotalTimeoutMultiplier = 0; | |
82 | timeouts.WriteTotalTimeoutConstant = 0; | |
83 | timeouts.WriteTotalTimeoutMultiplier = 0; | |
84 | if (!SetCommTimeouts (h, &timeouts)) | |
85 | { | |
86 | errno = EINVAL; | |
87 | return -1; | |
88 | } | |
89 | ||
90 | state = xmalloc (sizeof (struct ser_windows_state)); | |
91 | memset (state, 0, sizeof (struct ser_windows_state)); | |
92 | scb->state = state; | |
93 | ||
94 | /* Create a manual reset event to watch the input buffer. */ | |
95 | state->ov.hEvent = CreateEvent (0, TRUE, FALSE, 0); | |
96 | ||
97 | /* Create a (currently unused) handle to record exceptions. */ | |
98 | state->except_event = CreateEvent (0, TRUE, FALSE, 0); | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
103 | /* Wait for the output to drain away, as opposed to flushing (discarding) | |
104 | it. */ | |
105 | ||
106 | static int | |
107 | ser_windows_drain_output (struct serial *scb) | |
108 | { | |
109 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
110 | ||
111 | return (FlushFileBuffers (h) != 0) ? 0 : -1; | |
112 | } | |
113 | ||
114 | static int | |
115 | ser_windows_flush_output (struct serial *scb) | |
116 | { | |
117 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
118 | ||
119 | return (PurgeComm (h, PURGE_TXCLEAR) != 0) ? 0 : -1; | |
120 | } | |
121 | ||
122 | static int | |
123 | ser_windows_flush_input (struct serial *scb) | |
124 | { | |
125 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
126 | ||
127 | return (PurgeComm (h, PURGE_RXCLEAR) != 0) ? 0 : -1; | |
128 | } | |
129 | ||
130 | static int | |
131 | ser_windows_send_break (struct serial *scb) | |
132 | { | |
133 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
134 | ||
135 | if (SetCommBreak (h) == 0) | |
136 | return -1; | |
137 | ||
138 | /* Delay for 250 milliseconds. */ | |
139 | Sleep (250); | |
140 | ||
141 | if (ClearCommBreak (h)) | |
142 | return -1; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static void | |
148 | ser_windows_raw (struct serial *scb) | |
149 | { | |
150 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
151 | DCB state; | |
152 | ||
153 | if (GetCommState (h, &state) == 0) | |
154 | return; | |
155 | ||
156 | state.fParity = FALSE; | |
157 | state.fOutxCtsFlow = FALSE; | |
158 | state.fOutxDsrFlow = FALSE; | |
159 | state.fDtrControl = DTR_CONTROL_ENABLE; | |
160 | state.fDsrSensitivity = FALSE; | |
161 | state.fOutX = FALSE; | |
162 | state.fInX = FALSE; | |
163 | state.fNull = FALSE; | |
164 | state.fAbortOnError = FALSE; | |
165 | state.ByteSize = 8; | |
166 | state.Parity = NOPARITY; | |
167 | ||
168 | scb->current_timeout = 0; | |
169 | ||
170 | if (SetCommState (h, &state) == 0) | |
b37520b6 | 171 | warning (_("SetCommState failed")); |
0ea3f30e DJ |
172 | } |
173 | ||
174 | static int | |
175 | ser_windows_setstopbits (struct serial *scb, int num) | |
176 | { | |
177 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
178 | DCB state; | |
179 | ||
180 | if (GetCommState (h, &state) == 0) | |
181 | return -1; | |
182 | ||
183 | switch (num) | |
184 | { | |
185 | case SERIAL_1_STOPBITS: | |
186 | state.StopBits = ONESTOPBIT; | |
187 | break; | |
188 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
189 | state.StopBits = ONE5STOPBITS; | |
190 | break; | |
191 | case SERIAL_2_STOPBITS: | |
192 | state.StopBits = TWOSTOPBITS; | |
193 | break; | |
194 | default: | |
195 | return 1; | |
196 | } | |
197 | ||
198 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
199 | } | |
200 | ||
201 | static int | |
202 | ser_windows_setbaudrate (struct serial *scb, int rate) | |
203 | { | |
204 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
205 | DCB state; | |
206 | ||
207 | if (GetCommState (h, &state) == 0) | |
208 | return -1; | |
209 | ||
210 | state.BaudRate = rate; | |
211 | ||
212 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
213 | } | |
214 | ||
215 | static void | |
216 | ser_windows_close (struct serial *scb) | |
217 | { | |
218 | struct ser_windows_state *state; | |
219 | ||
e25b2cfa PM |
220 | /* Stop any pending selects. On Windows 95 OS, CancelIo function does |
221 | not exist. In that case, it can be replaced by a call to CloseHandle, | |
222 | but this is not necessary here as we do close the Windows handle | |
223 | by calling close (scb->fd) below. */ | |
4af53f97 PM |
224 | if (CancelIo) |
225 | CancelIo ((HANDLE) _get_osfhandle (scb->fd)); | |
0ea3f30e DJ |
226 | state = scb->state; |
227 | CloseHandle (state->ov.hEvent); | |
228 | CloseHandle (state->except_event); | |
229 | ||
230 | if (scb->fd < 0) | |
231 | return; | |
232 | ||
233 | close (scb->fd); | |
234 | scb->fd = -1; | |
235 | ||
236 | xfree (scb->state); | |
237 | } | |
238 | ||
239 | static void | |
240 | ser_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
241 | { | |
242 | struct ser_windows_state *state; | |
243 | COMSTAT status; | |
244 | DWORD errors; | |
245 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
246 | ||
247 | state = scb->state; | |
248 | ||
249 | *except = state->except_event; | |
250 | *read = state->ov.hEvent; | |
251 | ||
252 | if (state->in_progress) | |
253 | return; | |
254 | ||
255 | /* Reset the mask - we are only interested in any characters which | |
256 | arrive after this point, not characters which might have arrived | |
257 | and already been read. */ | |
258 | ||
259 | /* This really, really shouldn't be necessary - just the second one. | |
260 | But otherwise an internal flag for EV_RXCHAR does not get | |
261 | cleared, and we get a duplicated event, if the last batch | |
262 | of characters included at least two arriving close together. */ | |
263 | if (!SetCommMask (h, 0)) | |
264 | warning (_("ser_windows_wait_handle: reseting mask failed")); | |
265 | ||
266 | if (!SetCommMask (h, EV_RXCHAR)) | |
267 | warning (_("ser_windows_wait_handle: reseting mask failed (2)")); | |
268 | ||
269 | /* There's a potential race condition here; we must check cbInQue | |
270 | and not wait if that's nonzero. */ | |
271 | ||
272 | ClearCommError (h, &errors, &status); | |
273 | if (status.cbInQue > 0) | |
274 | { | |
275 | SetEvent (state->ov.hEvent); | |
276 | return; | |
277 | } | |
278 | ||
279 | state->in_progress = 1; | |
280 | ResetEvent (state->ov.hEvent); | |
281 | state->lastCommMask = -2; | |
282 | if (WaitCommEvent (h, &state->lastCommMask, &state->ov)) | |
283 | { | |
284 | gdb_assert (state->lastCommMask & EV_RXCHAR); | |
285 | SetEvent (state->ov.hEvent); | |
286 | } | |
287 | else | |
288 | gdb_assert (GetLastError () == ERROR_IO_PENDING); | |
289 | } | |
290 | ||
291 | static int | |
292 | ser_windows_read_prim (struct serial *scb, size_t count) | |
293 | { | |
294 | struct ser_windows_state *state; | |
295 | OVERLAPPED ov; | |
296 | DWORD bytes_read, bytes_read_tmp; | |
297 | HANDLE h; | |
298 | gdb_byte *p; | |
299 | ||
300 | state = scb->state; | |
301 | if (state->in_progress) | |
302 | { | |
303 | WaitForSingleObject (state->ov.hEvent, INFINITE); | |
304 | state->in_progress = 0; | |
305 | ResetEvent (state->ov.hEvent); | |
306 | } | |
307 | ||
308 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
309 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
310 | h = (HANDLE) _get_osfhandle (scb->fd); | |
311 | ||
312 | if (!ReadFile (h, scb->buf, /* count */ 1, &bytes_read, &ov)) | |
313 | { | |
314 | if (GetLastError () != ERROR_IO_PENDING | |
315 | || !GetOverlappedResult (h, &ov, &bytes_read, TRUE)) | |
316 | bytes_read = -1; | |
317 | } | |
318 | ||
319 | CloseHandle (ov.hEvent); | |
320 | return bytes_read; | |
321 | } | |
322 | ||
323 | static int | |
324 | ser_windows_write_prim (struct serial *scb, const void *buf, size_t len) | |
325 | { | |
326 | struct ser_windows_state *state; | |
327 | OVERLAPPED ov; | |
328 | DWORD bytes_written; | |
329 | HANDLE h; | |
330 | ||
331 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
332 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
333 | h = (HANDLE) _get_osfhandle (scb->fd); | |
334 | if (!WriteFile (h, buf, len, &bytes_written, &ov)) | |
335 | { | |
336 | if (GetLastError () != ERROR_IO_PENDING | |
337 | || !GetOverlappedResult (h, &ov, &bytes_written, TRUE)) | |
338 | bytes_written = -1; | |
339 | } | |
340 | ||
341 | CloseHandle (ov.hEvent); | |
342 | return bytes_written; | |
343 | } | |
344 | ||
4577549b DJ |
345 | /* On Windows, gdb_select is implemented using WaitForMulpleObjects. |
346 | A "select thread" is created for each file descriptor. These | |
347 | threads looks for activity on the corresponding descriptor, using | |
348 | whatever techniques are appropriate for the descriptor type. When | |
349 | that activity occurs, the thread signals an appropriate event, | |
350 | which wakes up WaitForMultipleObjects. | |
351 | ||
352 | Each select thread is in one of two states: stopped or started. | |
353 | Select threads begin in the stopped state. When gdb_select is | |
354 | called, threads corresponding to the descriptors of interest are | |
355 | started by calling a wait_handle function. Each thread that | |
356 | notices activity signals the appropriate event and then reenters | |
357 | the stopped state. Before gdb_select returns it calls the | |
358 | wait_handle_done functions, which return the threads to the stopped | |
359 | state. */ | |
360 | ||
361 | enum select_thread_state { | |
362 | STS_STARTED, | |
363 | STS_STOPPED | |
364 | }; | |
365 | ||
0ea3f30e DJ |
366 | struct ser_console_state |
367 | { | |
4577549b DJ |
368 | /* Signaled by the select thread to indicate that data is available |
369 | on the file descriptor. */ | |
0ea3f30e | 370 | HANDLE read_event; |
4577549b DJ |
371 | /* Signaled by the select thread to indicate that an exception has |
372 | occurred on the file descriptor. */ | |
0ea3f30e | 373 | HANDLE except_event; |
4577549b DJ |
374 | /* Signaled by the select thread to indicate that it has entered the |
375 | started state. HAVE_STARTED and HAVE_STOPPED are never signaled | |
376 | simultaneously. */ | |
377 | HANDLE have_started; | |
378 | /* Signaled by the select thread to indicate that it has stopped, | |
379 | either because data is available (and READ_EVENT is signaled), | |
380 | because an exception has occurred (and EXCEPT_EVENT is signaled), | |
381 | or because STOP_SELECT was signaled. */ | |
382 | HANDLE have_stopped; | |
0ea3f30e | 383 | |
4577549b DJ |
384 | /* Signaled by the main program to tell the select thread to enter |
385 | the started state. */ | |
0ea3f30e | 386 | HANDLE start_select; |
4577549b | 387 | /* Signaled by the main program to tell the select thread to enter |
c378eb4e | 388 | the stopped state. */ |
0ea3f30e | 389 | HANDLE stop_select; |
4577549b DJ |
390 | /* Signaled by the main program to tell the select thread to |
391 | exit. */ | |
c3e2b812 | 392 | HANDLE exit_select; |
c3e2b812 | 393 | |
4577549b | 394 | /* The handle for the select thread. */ |
c3e2b812 | 395 | HANDLE thread; |
4577549b DJ |
396 | /* The state of the select thread. This field is only accessed in |
397 | the main program, never by the select thread itself. */ | |
398 | enum select_thread_state thread_state; | |
0ea3f30e DJ |
399 | }; |
400 | ||
4577549b DJ |
401 | /* Called by a select thread to enter the stopped state. This |
402 | function does not return until the thread has re-entered the | |
403 | started state. */ | |
404 | static void | |
405 | select_thread_wait (struct ser_console_state *state) | |
406 | { | |
407 | HANDLE wait_events[2]; | |
408 | ||
409 | /* There are two things that can wake us up: a request that we enter | |
410 | the started state, or that we exit this thread. */ | |
411 | wait_events[0] = state->start_select; | |
412 | wait_events[1] = state->exit_select; | |
413 | if (WaitForMultipleObjects (2, wait_events, FALSE, INFINITE) | |
414 | != WAIT_OBJECT_0) | |
415 | /* Either the EXIT_SELECT event was signaled (requesting that the | |
416 | thread exit) or an error has occurred. In either case, we exit | |
417 | the thread. */ | |
418 | ExitThread (0); | |
419 | ||
420 | /* We are now in the started state. */ | |
421 | SetEvent (state->have_started); | |
422 | } | |
423 | ||
424 | typedef DWORD WINAPI (*thread_fn_type)(void *); | |
425 | ||
426 | /* Create a new select thread for SCB executing THREAD_FN. The STATE | |
427 | will be filled in by this function before return. */ | |
a95babbf | 428 | static void |
4577549b DJ |
429 | create_select_thread (thread_fn_type thread_fn, |
430 | struct serial *scb, | |
431 | struct ser_console_state *state) | |
432 | { | |
433 | DWORD threadId; | |
434 | ||
435 | /* Create all of the events. These are all auto-reset events. */ | |
436 | state->read_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
437 | state->except_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
438 | state->have_started = CreateEvent (NULL, FALSE, FALSE, NULL); | |
439 | state->have_stopped = CreateEvent (NULL, FALSE, FALSE, NULL); | |
440 | state->start_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
441 | state->stop_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
442 | state->exit_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
443 | ||
444 | state->thread = CreateThread (NULL, 0, thread_fn, scb, 0, &threadId); | |
445 | /* The thread begins in the stopped state. */ | |
446 | state->thread_state = STS_STOPPED; | |
447 | } | |
448 | ||
449 | /* Destroy the select thread indicated by STATE. */ | |
450 | static void | |
451 | destroy_select_thread (struct ser_console_state *state) | |
452 | { | |
453 | /* Ask the thread to exit. */ | |
454 | SetEvent (state->exit_select); | |
455 | /* Wait until it does. */ | |
456 | WaitForSingleObject (state->thread, INFINITE); | |
457 | ||
458 | /* Destroy the events. */ | |
459 | CloseHandle (state->read_event); | |
460 | CloseHandle (state->except_event); | |
461 | CloseHandle (state->have_started); | |
462 | CloseHandle (state->have_stopped); | |
463 | CloseHandle (state->start_select); | |
464 | CloseHandle (state->stop_select); | |
465 | CloseHandle (state->exit_select); | |
466 | } | |
467 | ||
468 | /* Called by gdb_select to start the select thread indicated by STATE. | |
469 | This function does not return until the thread has started. */ | |
470 | static void | |
471 | start_select_thread (struct ser_console_state *state) | |
472 | { | |
473 | /* Ask the thread to start. */ | |
474 | SetEvent (state->start_select); | |
475 | /* Wait until it does. */ | |
476 | WaitForSingleObject (state->have_started, INFINITE); | |
477 | /* The thread is now started. */ | |
478 | state->thread_state = STS_STARTED; | |
479 | } | |
480 | ||
481 | /* Called by gdb_select to stop the select thread indicated by STATE. | |
482 | This function does not return until the thread has stopped. */ | |
483 | static void | |
484 | stop_select_thread (struct ser_console_state *state) | |
485 | { | |
486 | /* If the thread is already in the stopped state, we have nothing to | |
487 | do. Some of the wait_handle functions avoid calling | |
488 | start_select_thread if they notice activity on the relevant file | |
489 | descriptors. The wait_handle_done functions still call | |
490 | stop_select_thread -- but it is already stopped. */ | |
491 | if (state->thread_state != STS_STARTED) | |
492 | return; | |
493 | /* Ask the thread to stop. */ | |
494 | SetEvent (state->stop_select); | |
495 | /* Wait until it does. */ | |
496 | WaitForSingleObject (state->have_stopped, INFINITE); | |
497 | /* The thread is now stopped. */ | |
498 | state->thread_state = STS_STOPPED; | |
499 | } | |
500 | ||
0ea3f30e DJ |
501 | static DWORD WINAPI |
502 | console_select_thread (void *arg) | |
503 | { | |
504 | struct serial *scb = arg; | |
c3e2b812 DJ |
505 | struct ser_console_state *state; |
506 | int event_index; | |
0ea3f30e DJ |
507 | HANDLE h; |
508 | ||
c3e2b812 DJ |
509 | state = scb->state; |
510 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
511 | |
512 | while (1) | |
513 | { | |
514 | HANDLE wait_events[2]; | |
515 | INPUT_RECORD record; | |
516 | DWORD n_records; | |
517 | ||
4577549b | 518 | select_thread_wait (state); |
c3e2b812 | 519 | |
4577549b DJ |
520 | while (1) |
521 | { | |
522 | wait_events[0] = state->stop_select; | |
523 | wait_events[1] = h; | |
0ea3f30e | 524 | |
3e43a32a MS |
525 | event_index = WaitForMultipleObjects (2, wait_events, |
526 | FALSE, INFINITE); | |
0ea3f30e | 527 | |
4577549b DJ |
528 | if (event_index == WAIT_OBJECT_0 |
529 | || WaitForSingleObject (state->stop_select, 0) == WAIT_OBJECT_0) | |
530 | break; | |
0ea3f30e | 531 | |
4577549b DJ |
532 | if (event_index != WAIT_OBJECT_0 + 1) |
533 | { | |
534 | /* Wait must have failed; assume an error has occured, e.g. | |
535 | the handle has been closed. */ | |
536 | SetEvent (state->except_event); | |
537 | break; | |
538 | } | |
0ea3f30e | 539 | |
4577549b DJ |
540 | /* We've got a pending event on the console. See if it's |
541 | of interest. */ | |
542 | if (!PeekConsoleInput (h, &record, 1, &n_records) || n_records != 1) | |
543 | { | |
544 | /* Something went wrong. Maybe the console is gone. */ | |
545 | SetEvent (state->except_event); | |
546 | break; | |
547 | } | |
0ea3f30e | 548 | |
4577549b | 549 | if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) |
c3e2b812 | 550 | { |
4577549b DJ |
551 | WORD keycode = record.Event.KeyEvent.wVirtualKeyCode; |
552 | ||
553 | /* Ignore events containing only control keys. We must | |
554 | recognize "enhanced" keys which we are interested in | |
555 | reading via getch, if they do not map to ASCII. But we | |
556 | do not want to report input available for e.g. the | |
557 | control key alone. */ | |
558 | ||
559 | if (record.Event.KeyEvent.uChar.AsciiChar != 0 | |
560 | || keycode == VK_PRIOR | |
561 | || keycode == VK_NEXT | |
562 | || keycode == VK_END | |
563 | || keycode == VK_HOME | |
564 | || keycode == VK_LEFT | |
565 | || keycode == VK_UP | |
566 | || keycode == VK_RIGHT | |
567 | || keycode == VK_DOWN | |
568 | || keycode == VK_INSERT | |
569 | || keycode == VK_DELETE) | |
570 | { | |
571 | /* This is really a keypress. */ | |
572 | SetEvent (state->read_event); | |
573 | break; | |
574 | } | |
c3e2b812 | 575 | } |
4577549b DJ |
576 | |
577 | /* Otherwise discard it and wait again. */ | |
578 | ReadConsoleInput (h, &record, 1, &n_records); | |
0ea3f30e DJ |
579 | } |
580 | ||
4577549b | 581 | SetEvent(state->have_stopped); |
0ea3f30e | 582 | } |
a32d7317 | 583 | return 0; |
0ea3f30e DJ |
584 | } |
585 | ||
586 | static int | |
587 | fd_is_pipe (int fd) | |
588 | { | |
589 | if (PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, NULL, NULL)) | |
590 | return 1; | |
591 | else | |
592 | return 0; | |
593 | } | |
594 | ||
7e71daaa JG |
595 | static int |
596 | fd_is_file (int fd) | |
597 | { | |
598 | if (GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_DISK) | |
599 | return 1; | |
600 | else | |
601 | return 0; | |
602 | } | |
603 | ||
0ea3f30e DJ |
604 | static DWORD WINAPI |
605 | pipe_select_thread (void *arg) | |
606 | { | |
607 | struct serial *scb = arg; | |
c3e2b812 DJ |
608 | struct ser_console_state *state; |
609 | int event_index; | |
0ea3f30e DJ |
610 | HANDLE h; |
611 | ||
c3e2b812 DJ |
612 | state = scb->state; |
613 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
614 | |
615 | while (1) | |
616 | { | |
0ea3f30e DJ |
617 | DWORD n_avail; |
618 | ||
4577549b | 619 | select_thread_wait (state); |
c3e2b812 | 620 | |
4577549b DJ |
621 | /* Wait for something to happen on the pipe. */ |
622 | while (1) | |
0ea3f30e | 623 | { |
4577549b DJ |
624 | if (!PeekNamedPipe (h, NULL, 0, NULL, &n_avail, NULL)) |
625 | { | |
626 | SetEvent (state->except_event); | |
627 | break; | |
628 | } | |
0ea3f30e | 629 | |
4577549b DJ |
630 | if (n_avail > 0) |
631 | { | |
632 | SetEvent (state->read_event); | |
633 | break; | |
634 | } | |
0ea3f30e | 635 | |
4577549b DJ |
636 | /* Delay 10ms before checking again, but allow the stop |
637 | event to wake us. */ | |
638 | if (WaitForSingleObject (state->stop_select, 10) == WAIT_OBJECT_0) | |
639 | break; | |
640 | } | |
0ea3f30e | 641 | |
4577549b | 642 | SetEvent (state->have_stopped); |
0ea3f30e | 643 | } |
a32d7317 | 644 | return 0; |
0ea3f30e DJ |
645 | } |
646 | ||
7e71daaa JG |
647 | static DWORD WINAPI |
648 | file_select_thread (void *arg) | |
649 | { | |
650 | struct serial *scb = arg; | |
651 | struct ser_console_state *state; | |
652 | int event_index; | |
653 | HANDLE h; | |
654 | ||
655 | state = scb->state; | |
656 | h = (HANDLE) _get_osfhandle (scb->fd); | |
657 | ||
658 | while (1) | |
659 | { | |
4577549b | 660 | select_thread_wait (state); |
7e71daaa | 661 | |
3e43a32a MS |
662 | if (SetFilePointer (h, 0, NULL, FILE_CURRENT) |
663 | == INVALID_SET_FILE_POINTER) | |
4577549b DJ |
664 | SetEvent (state->except_event); |
665 | else | |
666 | SetEvent (state->read_event); | |
7e71daaa | 667 | |
4577549b | 668 | SetEvent (state->have_stopped); |
7e71daaa | 669 | } |
a32d7317 | 670 | return 0; |
7e71daaa JG |
671 | } |
672 | ||
0ea3f30e DJ |
673 | static void |
674 | ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
675 | { | |
676 | struct ser_console_state *state = scb->state; | |
677 | ||
678 | if (state == NULL) | |
679 | { | |
4577549b | 680 | thread_fn_type thread_fn; |
0ea3f30e DJ |
681 | int is_tty; |
682 | ||
683 | is_tty = isatty (scb->fd); | |
7e71daaa | 684 | if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd)) |
0ea3f30e DJ |
685 | { |
686 | *read = NULL; | |
687 | *except = NULL; | |
688 | return; | |
689 | } | |
690 | ||
691 | state = xmalloc (sizeof (struct ser_console_state)); | |
692 | memset (state, 0, sizeof (struct ser_console_state)); | |
693 | scb->state = state; | |
694 | ||
0ea3f30e | 695 | if (is_tty) |
4577549b | 696 | thread_fn = console_select_thread; |
7e71daaa | 697 | else if (fd_is_pipe (scb->fd)) |
4577549b | 698 | thread_fn = pipe_select_thread; |
7e71daaa | 699 | else |
4577549b DJ |
700 | thread_fn = file_select_thread; |
701 | ||
702 | create_select_thread (thread_fn, scb, state); | |
0ea3f30e DJ |
703 | } |
704 | ||
c3e2b812 DJ |
705 | *read = state->read_event; |
706 | *except = state->except_event; | |
707 | ||
708 | /* Start from a blank state. */ | |
0ea3f30e DJ |
709 | ResetEvent (state->read_event); |
710 | ResetEvent (state->except_event); | |
c3e2b812 DJ |
711 | ResetEvent (state->stop_select); |
712 | ||
713 | /* First check for a key already in the buffer. If there is one, | |
714 | we don't need a thread. This also catches the second key of | |
715 | multi-character returns from getch, for instance for arrow | |
716 | keys. The second half is in a C library internal buffer, | |
717 | and PeekConsoleInput will not find it. */ | |
718 | if (_kbhit ()) | |
719 | { | |
720 | SetEvent (state->read_event); | |
721 | return; | |
722 | } | |
0ea3f30e | 723 | |
c3e2b812 | 724 | /* Otherwise, start the select thread. */ |
4577549b | 725 | start_select_thread (state); |
c3e2b812 | 726 | } |
0ea3f30e | 727 | |
c3e2b812 DJ |
728 | static void |
729 | ser_console_done_wait_handle (struct serial *scb) | |
730 | { | |
731 | struct ser_console_state *state = scb->state; | |
732 | ||
733 | if (state == NULL) | |
734 | return; | |
735 | ||
4577549b | 736 | stop_select_thread (state); |
0ea3f30e DJ |
737 | } |
738 | ||
739 | static void | |
740 | ser_console_close (struct serial *scb) | |
741 | { | |
742 | struct ser_console_state *state = scb->state; | |
743 | ||
744 | if (scb->state) | |
745 | { | |
4577549b | 746 | destroy_select_thread (state); |
0ea3f30e DJ |
747 | xfree (scb->state); |
748 | } | |
749 | } | |
750 | ||
751 | struct ser_console_ttystate | |
752 | { | |
753 | int is_a_tty; | |
754 | }; | |
755 | ||
756 | static serial_ttystate | |
757 | ser_console_get_tty_state (struct serial *scb) | |
758 | { | |
759 | if (isatty (scb->fd)) | |
760 | { | |
761 | struct ser_console_ttystate *state; | |
433759f7 | 762 | |
0ea3f30e DJ |
763 | state = (struct ser_console_ttystate *) xmalloc (sizeof *state); |
764 | state->is_a_tty = 1; | |
765 | return state; | |
766 | } | |
767 | else | |
768 | return NULL; | |
769 | } | |
770 | ||
5f1fb6dc JB |
771 | struct pipe_state |
772 | { | |
773 | /* Since we use the pipe_select_thread for our select emulation, | |
774 | we need to place the state structure it requires at the front | |
775 | of our state. */ | |
776 | struct ser_console_state wait; | |
777 | ||
778 | /* The pex obj for our (one-stage) pipeline. */ | |
779 | struct pex_obj *pex; | |
780 | ||
781 | /* Streams for the pipeline's input and output. */ | |
782 | FILE *input, *output; | |
783 | }; | |
784 | ||
785 | static struct pipe_state * | |
786 | make_pipe_state (void) | |
787 | { | |
70ba0933 | 788 | struct pipe_state *ps = XNEW (struct pipe_state); |
5f1fb6dc JB |
789 | |
790 | memset (ps, 0, sizeof (*ps)); | |
791 | ps->wait.read_event = INVALID_HANDLE_VALUE; | |
792 | ps->wait.except_event = INVALID_HANDLE_VALUE; | |
793 | ps->wait.start_select = INVALID_HANDLE_VALUE; | |
794 | ps->wait.stop_select = INVALID_HANDLE_VALUE; | |
795 | ||
796 | return ps; | |
797 | } | |
798 | ||
799 | static void | |
800 | free_pipe_state (struct pipe_state *ps) | |
801 | { | |
802 | int saved_errno = errno; | |
803 | ||
804 | if (ps->wait.read_event != INVALID_HANDLE_VALUE) | |
4577549b | 805 | destroy_select_thread (&ps->wait); |
5f1fb6dc JB |
806 | |
807 | /* Close the pipe to the child. We must close the pipe before | |
808 | calling pex_free because pex_free will wait for the child to exit | |
809 | and the child will not exit until the pipe is closed. */ | |
810 | if (ps->input) | |
811 | fclose (ps->input); | |
812 | if (ps->pex) | |
58f07bae PA |
813 | { |
814 | pex_free (ps->pex); | |
815 | /* pex_free closes ps->output. */ | |
816 | } | |
817 | else if (ps->output) | |
818 | fclose (ps->output); | |
5f1fb6dc JB |
819 | |
820 | xfree (ps); | |
821 | ||
822 | errno = saved_errno; | |
823 | } | |
824 | ||
825 | static void | |
826 | cleanup_pipe_state (void *untyped) | |
827 | { | |
828 | struct pipe_state *ps = untyped; | |
829 | ||
830 | free_pipe_state (ps); | |
831 | } | |
832 | ||
833 | static int | |
834 | pipe_windows_open (struct serial *scb, const char *name) | |
835 | { | |
ef7723eb | 836 | struct pipe_state *ps; |
65cc4390 | 837 | FILE *pex_stderr; |
efdb2a86 PA |
838 | char **argv; |
839 | struct cleanup *back_to; | |
ef7723eb | 840 | |
d1a41061 PP |
841 | if (name == NULL) |
842 | error_no_arg (_("child command")); | |
843 | ||
efdb2a86 PA |
844 | argv = gdb_buildargv (name); |
845 | back_to = make_cleanup_freeargv (argv); | |
d1a41061 | 846 | |
5f1fb6dc | 847 | if (! argv[0] || argv[0][0] == '\0') |
a73c6dcd | 848 | error (_("missing child command")); |
5f1fb6dc | 849 | |
ef7723eb | 850 | ps = make_pipe_state (); |
5f1fb6dc JB |
851 | make_cleanup (cleanup_pipe_state, ps); |
852 | ||
853 | ps->pex = pex_init (PEX_USE_PIPES, "target remote pipe", NULL); | |
854 | if (! ps->pex) | |
855 | goto fail; | |
856 | ps->input = pex_input_pipe (ps->pex, 1); | |
857 | if (! ps->input) | |
858 | goto fail; | |
859 | ||
860 | { | |
861 | int err; | |
862 | const char *err_msg | |
65cc4390 VP |
863 | = pex_run (ps->pex, PEX_SEARCH | PEX_BINARY_INPUT | PEX_BINARY_OUTPUT |
864 | | PEX_STDERR_TO_PIPE, | |
5f1fb6dc JB |
865 | argv[0], argv, NULL, NULL, |
866 | &err); | |
867 | ||
868 | if (err_msg) | |
869 | { | |
870 | /* Our caller expects us to return -1, but all they'll do with | |
871 | it generally is print the message based on errno. We have | |
872 | all the same information here, plus err_msg provided by | |
873 | pex_run, so we just raise the error here. */ | |
874 | if (err) | |
a73c6dcd | 875 | error (_("error starting child process '%s': %s: %s"), |
5f1fb6dc JB |
876 | name, err_msg, safe_strerror (err)); |
877 | else | |
a73c6dcd | 878 | error (_("error starting child process '%s': %s"), |
5f1fb6dc JB |
879 | name, err_msg); |
880 | } | |
881 | } | |
882 | ||
883 | ps->output = pex_read_output (ps->pex, 1); | |
884 | if (! ps->output) | |
885 | goto fail; | |
5f1fb6dc | 886 | scb->fd = fileno (ps->output); |
65cc4390 VP |
887 | |
888 | pex_stderr = pex_read_err (ps->pex, 1); | |
889 | if (! pex_stderr) | |
890 | goto fail; | |
891 | scb->error_fd = fileno (pex_stderr); | |
892 | ||
5f1fb6dc JB |
893 | scb->state = (void *) ps; |
894 | ||
895 | discard_cleanups (back_to); | |
896 | return 0; | |
897 | ||
898 | fail: | |
899 | do_cleanups (back_to); | |
900 | return -1; | |
901 | } | |
902 | ||
58f07bae PA |
903 | static int |
904 | pipe_windows_fdopen (struct serial *scb, int fd) | |
905 | { | |
906 | struct pipe_state *ps; | |
907 | ||
908 | ps = make_pipe_state (); | |
909 | ||
910 | ps->input = fdopen (fd, "r+"); | |
911 | if (! ps->input) | |
912 | goto fail; | |
913 | ||
914 | ps->output = fdopen (fd, "r+"); | |
915 | if (! ps->output) | |
916 | goto fail; | |
917 | ||
918 | scb->fd = fd; | |
919 | scb->state = (void *) ps; | |
920 | ||
921 | return 0; | |
922 | ||
923 | fail: | |
924 | free_pipe_state (ps); | |
925 | return -1; | |
926 | } | |
5f1fb6dc JB |
927 | |
928 | static void | |
929 | pipe_windows_close (struct serial *scb) | |
930 | { | |
931 | struct pipe_state *ps = scb->state; | |
932 | ||
933 | /* In theory, we should try to kill the subprocess here, but the pex | |
934 | interface doesn't give us enough information to do that. Usually | |
935 | closing the input pipe will get the message across. */ | |
936 | ||
937 | free_pipe_state (ps); | |
938 | } | |
939 | ||
940 | ||
941 | static int | |
942 | pipe_windows_read (struct serial *scb, size_t count) | |
943 | { | |
4998c1df | 944 | HANDLE pipeline_out = (HANDLE) _get_osfhandle (scb->fd); |
ef7723eb VP |
945 | DWORD available; |
946 | DWORD bytes_read; | |
947 | ||
5f1fb6dc JB |
948 | if (pipeline_out == INVALID_HANDLE_VALUE) |
949 | return -1; | |
950 | ||
5f1fb6dc JB |
951 | if (! PeekNamedPipe (pipeline_out, NULL, 0, NULL, &available, NULL)) |
952 | return -1; | |
953 | ||
954 | if (count > available) | |
955 | count = available; | |
956 | ||
5f1fb6dc JB |
957 | if (! ReadFile (pipeline_out, scb->buf, count, &bytes_read, NULL)) |
958 | return -1; | |
959 | ||
960 | return bytes_read; | |
961 | } | |
962 | ||
963 | ||
964 | static int | |
965 | pipe_windows_write (struct serial *scb, const void *buf, size_t count) | |
966 | { | |
967 | struct pipe_state *ps = scb->state; | |
ef7723eb VP |
968 | HANDLE pipeline_in; |
969 | DWORD written; | |
970 | ||
5f1fb6dc JB |
971 | int pipeline_in_fd = fileno (ps->input); |
972 | if (pipeline_in_fd < 0) | |
973 | return -1; | |
974 | ||
ef7723eb | 975 | pipeline_in = (HANDLE) _get_osfhandle (pipeline_in_fd); |
5f1fb6dc JB |
976 | if (pipeline_in == INVALID_HANDLE_VALUE) |
977 | return -1; | |
978 | ||
5f1fb6dc JB |
979 | if (! WriteFile (pipeline_in, buf, count, &written, NULL)) |
980 | return -1; | |
981 | ||
982 | return written; | |
983 | } | |
984 | ||
985 | ||
986 | static void | |
987 | pipe_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
988 | { | |
989 | struct pipe_state *ps = scb->state; | |
990 | ||
991 | /* Have we allocated our events yet? */ | |
992 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
4577549b DJ |
993 | /* Start the thread. */ |
994 | create_select_thread (pipe_select_thread, scb, &ps->wait); | |
5f1fb6dc | 995 | |
774a49c0 DJ |
996 | *read = ps->wait.read_event; |
997 | *except = ps->wait.except_event; | |
998 | ||
999 | /* Start from a blank state. */ | |
5f1fb6dc JB |
1000 | ResetEvent (ps->wait.read_event); |
1001 | ResetEvent (ps->wait.except_event); | |
774a49c0 | 1002 | ResetEvent (ps->wait.stop_select); |
5f1fb6dc | 1003 | |
4577549b | 1004 | start_select_thread (&ps->wait); |
5f1fb6dc JB |
1005 | } |
1006 | ||
774a49c0 DJ |
1007 | static void |
1008 | pipe_done_wait_handle (struct serial *scb) | |
1009 | { | |
1010 | struct pipe_state *ps = scb->state; | |
1011 | ||
1012 | /* Have we allocated our events yet? */ | |
1013 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
1014 | return; | |
1015 | ||
4577549b | 1016 | stop_select_thread (&ps->wait); |
774a49c0 | 1017 | } |
5f1fb6dc | 1018 | |
65cc4390 VP |
1019 | static int |
1020 | pipe_avail (struct serial *scb, int fd) | |
1021 | { | |
1022 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
1023 | DWORD numBytes; | |
1024 | BOOL r = PeekNamedPipe (h, NULL, 0, NULL, &numBytes, NULL); | |
433759f7 | 1025 | |
65cc4390 VP |
1026 | if (r == FALSE) |
1027 | numBytes = 0; | |
1028 | return numBytes; | |
1029 | } | |
1030 | ||
58f07bae PA |
1031 | int |
1032 | gdb_pipe (int pdes[2]) | |
1033 | { | |
1034 | if (_pipe (pdes, 512, _O_BINARY | _O_NOINHERIT) == -1) | |
1035 | return -1; | |
1036 | return 0; | |
1037 | } | |
1038 | ||
0ea3f30e DJ |
1039 | struct net_windows_state |
1040 | { | |
4577549b DJ |
1041 | struct ser_console_state base; |
1042 | ||
0ea3f30e DJ |
1043 | HANDLE sock_event; |
1044 | }; | |
1045 | ||
364fe1f7 PA |
1046 | /* Check whether the socket has any pending data to be read. If so, |
1047 | set the select thread's read event. On error, set the select | |
1048 | thread's except event. If any event was set, return true, | |
1049 | otherwise return false. */ | |
1050 | ||
1051 | static int | |
1052 | net_windows_socket_check_pending (struct serial *scb) | |
1053 | { | |
1054 | struct net_windows_state *state = scb->state; | |
1055 | unsigned long available; | |
1056 | ||
1057 | if (ioctlsocket (scb->fd, FIONREAD, &available) != 0) | |
1058 | { | |
1059 | /* The socket closed, or some other error. */ | |
1060 | SetEvent (state->base.except_event); | |
1061 | return 1; | |
1062 | } | |
1063 | else if (available > 0) | |
1064 | { | |
1065 | SetEvent (state->base.read_event); | |
1066 | return 1; | |
1067 | } | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
0ea3f30e DJ |
1072 | static DWORD WINAPI |
1073 | net_windows_select_thread (void *arg) | |
1074 | { | |
1075 | struct serial *scb = arg; | |
4577549b | 1076 | struct net_windows_state *state; |
c3e2b812 | 1077 | int event_index; |
0ea3f30e | 1078 | |
c3e2b812 | 1079 | state = scb->state; |
0ea3f30e DJ |
1080 | |
1081 | while (1) | |
1082 | { | |
1083 | HANDLE wait_events[2]; | |
1084 | WSANETWORKEVENTS events; | |
1085 | ||
4577549b | 1086 | select_thread_wait (&state->base); |
c3e2b812 | 1087 | |
4577549b | 1088 | wait_events[0] = state->base.stop_select; |
0ea3f30e DJ |
1089 | wait_events[1] = state->sock_event; |
1090 | ||
364fe1f7 PA |
1091 | /* Wait for something to happen on the socket. */ |
1092 | while (1) | |
0ea3f30e | 1093 | { |
364fe1f7 PA |
1094 | event_index = WaitForMultipleObjects (2, wait_events, FALSE, INFINITE); |
1095 | ||
1096 | if (event_index == WAIT_OBJECT_0 | |
1097 | || WaitForSingleObject (state->base.stop_select, 0) == WAIT_OBJECT_0) | |
1098 | { | |
1099 | /* We have been requested to stop. */ | |
1100 | break; | |
1101 | } | |
1102 | ||
1103 | if (event_index != WAIT_OBJECT_0 + 1) | |
1104 | { | |
1105 | /* Some error has occured. Assume that this is an error | |
1106 | condition. */ | |
1107 | SetEvent (state->base.except_event); | |
1108 | break; | |
1109 | } | |
1110 | ||
4577549b DJ |
1111 | /* Enumerate the internal network events, and reset the |
1112 | object that signalled us to catch the next event. */ | |
364fe1f7 PA |
1113 | if (WSAEnumNetworkEvents (scb->fd, state->sock_event, &events) != 0) |
1114 | { | |
1115 | /* Something went wrong. Maybe the socket is gone. */ | |
1116 | SetEvent (state->base.except_event); | |
1117 | break; | |
1118 | } | |
1119 | ||
4577549b | 1120 | if (events.lNetworkEvents & FD_READ) |
364fe1f7 PA |
1121 | { |
1122 | if (net_windows_socket_check_pending (scb)) | |
1123 | break; | |
1124 | ||
1125 | /* Spurious wakeup. That is, the socket's event was | |
1126 | signalled before we last called recv. */ | |
1127 | } | |
1128 | ||
4577549b | 1129 | if (events.lNetworkEvents & FD_CLOSE) |
364fe1f7 PA |
1130 | { |
1131 | SetEvent (state->base.except_event); | |
1132 | break; | |
1133 | } | |
0ea3f30e DJ |
1134 | } |
1135 | ||
4577549b | 1136 | SetEvent (state->base.have_stopped); |
0ea3f30e | 1137 | } |
364fe1f7 | 1138 | return 0; |
0ea3f30e DJ |
1139 | } |
1140 | ||
1141 | static void | |
1142 | net_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1143 | { | |
1144 | struct net_windows_state *state = scb->state; | |
1145 | ||
c3e2b812 | 1146 | /* Start from a clean slate. */ |
4577549b DJ |
1147 | ResetEvent (state->base.read_event); |
1148 | ResetEvent (state->base.except_event); | |
1149 | ResetEvent (state->base.stop_select); | |
0ea3f30e | 1150 | |
4577549b DJ |
1151 | *read = state->base.read_event; |
1152 | *except = state->base.except_event; | |
c3e2b812 | 1153 | |
364fe1f7 PA |
1154 | /* Check any pending events. Otherwise, start the select |
1155 | thread. */ | |
1156 | if (!net_windows_socket_check_pending (scb)) | |
1157 | start_select_thread (&state->base); | |
c3e2b812 DJ |
1158 | } |
1159 | ||
1160 | static void | |
1161 | net_windows_done_wait_handle (struct serial *scb) | |
1162 | { | |
1163 | struct net_windows_state *state = scb->state; | |
1164 | ||
4577549b | 1165 | stop_select_thread (&state->base); |
0ea3f30e DJ |
1166 | } |
1167 | ||
1168 | static int | |
1169 | net_windows_open (struct serial *scb, const char *name) | |
1170 | { | |
1171 | struct net_windows_state *state; | |
1172 | int ret; | |
1173 | DWORD threadId; | |
1174 | ||
1175 | ret = net_open (scb, name); | |
1176 | if (ret != 0) | |
1177 | return ret; | |
1178 | ||
1179 | state = xmalloc (sizeof (struct net_windows_state)); | |
1180 | memset (state, 0, sizeof (struct net_windows_state)); | |
1181 | scb->state = state; | |
1182 | ||
0ea3f30e DJ |
1183 | /* Associate an event with the socket. */ |
1184 | state->sock_event = CreateEvent (0, TRUE, FALSE, 0); | |
1185 | WSAEventSelect (scb->fd, state->sock_event, FD_READ | FD_CLOSE); | |
1186 | ||
4577549b DJ |
1187 | /* Start the thread. */ |
1188 | create_select_thread (net_windows_select_thread, scb, &state->base); | |
0ea3f30e DJ |
1189 | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | ||
1194 | static void | |
1195 | net_windows_close (struct serial *scb) | |
1196 | { | |
1197 | struct net_windows_state *state = scb->state; | |
1198 | ||
4577549b | 1199 | destroy_select_thread (&state->base); |
0ea3f30e DJ |
1200 | CloseHandle (state->sock_event); |
1201 | ||
1202 | xfree (scb->state); | |
1203 | ||
1204 | net_close (scb); | |
1205 | } | |
1206 | ||
12e8c7d7 TT |
1207 | /* The serial port driver. */ |
1208 | ||
1209 | static const struct serial_ops hardwire_ops = | |
1210 | { | |
1211 | "hardwire", | |
1212 | ser_windows_open, | |
1213 | ser_windows_close, | |
1214 | NULL, | |
1215 | ser_base_readchar, | |
1216 | ser_base_write, | |
1217 | ser_windows_flush_output, | |
1218 | ser_windows_flush_input, | |
1219 | ser_windows_send_break, | |
1220 | ser_windows_raw, | |
1221 | /* These are only used for stdin; we do not need them for serial | |
1222 | ports, so supply the standard dummies. */ | |
1223 | ser_base_get_tty_state, | |
1224 | ser_base_copy_tty_state, | |
1225 | ser_base_set_tty_state, | |
1226 | ser_base_print_tty_state, | |
1227 | ser_base_noflush_set_tty_state, | |
1228 | ser_windows_setbaudrate, | |
1229 | ser_windows_setstopbits, | |
1230 | ser_windows_drain_output, | |
1231 | ser_base_async, | |
1232 | ser_windows_read_prim, | |
1233 | ser_windows_write_prim, | |
1234 | NULL, | |
1235 | ser_windows_wait_handle | |
1236 | }; | |
1237 | ||
1238 | /* The dummy serial driver used for terminals. We only provide the | |
1239 | TTY-related methods. */ | |
1240 | ||
1241 | static const struct serial_ops tty_ops = | |
1242 | { | |
1243 | "terminal", | |
1244 | NULL, | |
1245 | ser_console_close, | |
1246 | NULL, | |
1247 | NULL, | |
1248 | NULL, | |
1249 | NULL, | |
1250 | NULL, | |
1251 | NULL, | |
1252 | NULL, | |
1253 | ser_console_get_tty_state, | |
1254 | ser_base_copy_tty_state, | |
1255 | ser_base_set_tty_state, | |
1256 | ser_base_print_tty_state, | |
1257 | ser_base_noflush_set_tty_state, | |
1258 | NULL, | |
1259 | NULL, | |
1260 | ser_base_drain_output, | |
1261 | NULL, | |
1262 | NULL, | |
1263 | NULL, | |
1264 | NULL, | |
1265 | ser_console_wait_handle, | |
1266 | ser_console_done_wait_handle | |
1267 | }; | |
1268 | ||
1269 | /* The pipe interface. */ | |
1270 | ||
1271 | static const struct serial_ops pipe_ops = | |
1272 | { | |
1273 | "pipe", | |
1274 | pipe_windows_open, | |
1275 | pipe_windows_close, | |
1276 | pipe_windows_fdopen, | |
1277 | ser_base_readchar, | |
1278 | ser_base_write, | |
1279 | ser_base_flush_output, | |
1280 | ser_base_flush_input, | |
1281 | ser_base_send_break, | |
1282 | ser_base_raw, | |
1283 | ser_base_get_tty_state, | |
1284 | ser_base_copy_tty_state, | |
1285 | ser_base_set_tty_state, | |
1286 | ser_base_print_tty_state, | |
1287 | ser_base_noflush_set_tty_state, | |
1288 | ser_base_setbaudrate, | |
1289 | ser_base_setstopbits, | |
1290 | ser_base_drain_output, | |
1291 | ser_base_async, | |
1292 | pipe_windows_read, | |
1293 | pipe_windows_write, | |
1294 | pipe_avail, | |
1295 | pipe_wait_handle, | |
1296 | pipe_done_wait_handle | |
1297 | }; | |
1298 | ||
1299 | /* The TCP/UDP socket driver. */ | |
1300 | ||
1301 | static const struct serial_ops tcp_ops = | |
1302 | { | |
1303 | "tcp", | |
1304 | net_windows_open, | |
1305 | net_windows_close, | |
1306 | NULL, | |
1307 | ser_base_readchar, | |
1308 | ser_base_write, | |
1309 | ser_base_flush_output, | |
1310 | ser_base_flush_input, | |
1311 | ser_tcp_send_break, | |
1312 | ser_base_raw, | |
1313 | ser_base_get_tty_state, | |
1314 | ser_base_copy_tty_state, | |
1315 | ser_base_set_tty_state, | |
1316 | ser_base_print_tty_state, | |
1317 | ser_base_noflush_set_tty_state, | |
1318 | ser_base_setbaudrate, | |
1319 | ser_base_setstopbits, | |
1320 | ser_base_drain_output, | |
1321 | ser_base_async, | |
1322 | net_read_prim, | |
1323 | net_write_prim, | |
1324 | NULL, | |
1325 | net_windows_wait_handle, | |
1326 | net_windows_done_wait_handle | |
1327 | }; | |
1328 | ||
0ea3f30e DJ |
1329 | void |
1330 | _initialize_ser_windows (void) | |
1331 | { | |
1332 | WSADATA wsa_data; | |
1333 | struct serial_ops *ops; | |
1334 | ||
4af53f97 PM |
1335 | HMODULE hm = NULL; |
1336 | ||
1337 | /* First find out if kernel32 exports CancelIo function. */ | |
1338 | hm = LoadLibrary ("kernel32.dll"); | |
1339 | if (hm) | |
1340 | { | |
1341 | CancelIo = (void *) GetProcAddress (hm, "CancelIo"); | |
1342 | FreeLibrary (hm); | |
1343 | } | |
1344 | else | |
1345 | CancelIo = NULL; | |
0ea3f30e | 1346 | |
12e8c7d7 TT |
1347 | serial_add_interface (&hardwire_ops); |
1348 | serial_add_interface (&tty_ops); | |
1349 | serial_add_interface (&pipe_ops); | |
5f1fb6dc | 1350 | |
0ea3f30e DJ |
1351 | /* If WinSock works, register the TCP/UDP socket driver. */ |
1352 | ||
1353 | if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0) | |
1354 | /* WinSock is unavailable. */ | |
1355 | return; | |
1356 | ||
12e8c7d7 | 1357 | serial_add_interface (&tcp_ops); |
0ea3f30e | 1358 | } |