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0ea3f30e DJ |
1 | /* Serial interface for local (hardwired) serial ports on Windows systems |
2 | ||
28e7fd62 | 3 | Copyright (C) 2006-2013 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 | ||
32 | #include "gdb_assert.h" | |
0e9f083f | 33 | #include <string.h> |
0ea3f30e | 34 | |
efdb2a86 PA |
35 | #include "command.h" |
36 | ||
0ea3f30e DJ |
37 | void _initialize_ser_windows (void); |
38 | ||
39 | struct ser_windows_state | |
40 | { | |
41 | int in_progress; | |
42 | OVERLAPPED ov; | |
43 | DWORD lastCommMask; | |
44 | HANDLE except_event; | |
45 | }; | |
46 | ||
4af53f97 PM |
47 | /* CancelIo is not available for Windows 95 OS, so we need to use |
48 | LoadLibrary/GetProcAddress to avoid a startup failure. */ | |
49 | #define CancelIo dyn_CancelIo | |
50 | static BOOL WINAPI (*CancelIo) (HANDLE); | |
51 | ||
0ea3f30e DJ |
52 | /* Open up a real live device for serial I/O. */ |
53 | ||
54 | static int | |
55 | ser_windows_open (struct serial *scb, const char *name) | |
56 | { | |
57 | HANDLE h; | |
58 | struct ser_windows_state *state; | |
59 | COMMTIMEOUTS timeouts; | |
60 | ||
0ea3f30e DJ |
61 | h = CreateFile (name, GENERIC_READ | GENERIC_WRITE, 0, NULL, |
62 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); | |
63 | if (h == INVALID_HANDLE_VALUE) | |
64 | { | |
65 | errno = ENOENT; | |
66 | return -1; | |
67 | } | |
68 | ||
1be7fe8d | 69 | scb->fd = _open_osfhandle ((intptr_t) h, O_RDWR); |
0ea3f30e DJ |
70 | if (scb->fd < 0) |
71 | { | |
72 | errno = ENOENT; | |
73 | return -1; | |
74 | } | |
75 | ||
76 | if (!SetCommMask (h, EV_RXCHAR)) | |
77 | { | |
78 | errno = EINVAL; | |
79 | return -1; | |
80 | } | |
81 | ||
82 | timeouts.ReadIntervalTimeout = MAXDWORD; | |
83 | timeouts.ReadTotalTimeoutConstant = 0; | |
84 | timeouts.ReadTotalTimeoutMultiplier = 0; | |
85 | timeouts.WriteTotalTimeoutConstant = 0; | |
86 | timeouts.WriteTotalTimeoutMultiplier = 0; | |
87 | if (!SetCommTimeouts (h, &timeouts)) | |
88 | { | |
89 | errno = EINVAL; | |
90 | return -1; | |
91 | } | |
92 | ||
93 | state = xmalloc (sizeof (struct ser_windows_state)); | |
94 | memset (state, 0, sizeof (struct ser_windows_state)); | |
95 | scb->state = state; | |
96 | ||
97 | /* Create a manual reset event to watch the input buffer. */ | |
98 | state->ov.hEvent = CreateEvent (0, TRUE, FALSE, 0); | |
99 | ||
100 | /* Create a (currently unused) handle to record exceptions. */ | |
101 | state->except_event = CreateEvent (0, TRUE, FALSE, 0); | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | /* Wait for the output to drain away, as opposed to flushing (discarding) | |
107 | it. */ | |
108 | ||
109 | static int | |
110 | ser_windows_drain_output (struct serial *scb) | |
111 | { | |
112 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
113 | ||
114 | return (FlushFileBuffers (h) != 0) ? 0 : -1; | |
115 | } | |
116 | ||
117 | static int | |
118 | ser_windows_flush_output (struct serial *scb) | |
119 | { | |
120 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
121 | ||
122 | return (PurgeComm (h, PURGE_TXCLEAR) != 0) ? 0 : -1; | |
123 | } | |
124 | ||
125 | static int | |
126 | ser_windows_flush_input (struct serial *scb) | |
127 | { | |
128 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
129 | ||
130 | return (PurgeComm (h, PURGE_RXCLEAR) != 0) ? 0 : -1; | |
131 | } | |
132 | ||
133 | static int | |
134 | ser_windows_send_break (struct serial *scb) | |
135 | { | |
136 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
137 | ||
138 | if (SetCommBreak (h) == 0) | |
139 | return -1; | |
140 | ||
141 | /* Delay for 250 milliseconds. */ | |
142 | Sleep (250); | |
143 | ||
144 | if (ClearCommBreak (h)) | |
145 | return -1; | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | static void | |
151 | ser_windows_raw (struct serial *scb) | |
152 | { | |
153 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
154 | DCB state; | |
155 | ||
156 | if (GetCommState (h, &state) == 0) | |
157 | return; | |
158 | ||
159 | state.fParity = FALSE; | |
160 | state.fOutxCtsFlow = FALSE; | |
161 | state.fOutxDsrFlow = FALSE; | |
162 | state.fDtrControl = DTR_CONTROL_ENABLE; | |
163 | state.fDsrSensitivity = FALSE; | |
164 | state.fOutX = FALSE; | |
165 | state.fInX = FALSE; | |
166 | state.fNull = FALSE; | |
167 | state.fAbortOnError = FALSE; | |
168 | state.ByteSize = 8; | |
169 | state.Parity = NOPARITY; | |
170 | ||
171 | scb->current_timeout = 0; | |
172 | ||
173 | if (SetCommState (h, &state) == 0) | |
b37520b6 | 174 | warning (_("SetCommState failed")); |
0ea3f30e DJ |
175 | } |
176 | ||
177 | static int | |
178 | ser_windows_setstopbits (struct serial *scb, int num) | |
179 | { | |
180 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
181 | DCB state; | |
182 | ||
183 | if (GetCommState (h, &state) == 0) | |
184 | return -1; | |
185 | ||
186 | switch (num) | |
187 | { | |
188 | case SERIAL_1_STOPBITS: | |
189 | state.StopBits = ONESTOPBIT; | |
190 | break; | |
191 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
192 | state.StopBits = ONE5STOPBITS; | |
193 | break; | |
194 | case SERIAL_2_STOPBITS: | |
195 | state.StopBits = TWOSTOPBITS; | |
196 | break; | |
197 | default: | |
198 | return 1; | |
199 | } | |
200 | ||
201 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
202 | } | |
203 | ||
204 | static int | |
205 | ser_windows_setbaudrate (struct serial *scb, int rate) | |
206 | { | |
207 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
208 | DCB state; | |
209 | ||
210 | if (GetCommState (h, &state) == 0) | |
211 | return -1; | |
212 | ||
213 | state.BaudRate = rate; | |
214 | ||
215 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
216 | } | |
217 | ||
218 | static void | |
219 | ser_windows_close (struct serial *scb) | |
220 | { | |
221 | struct ser_windows_state *state; | |
222 | ||
e25b2cfa PM |
223 | /* Stop any pending selects. On Windows 95 OS, CancelIo function does |
224 | not exist. In that case, it can be replaced by a call to CloseHandle, | |
225 | but this is not necessary here as we do close the Windows handle | |
226 | by calling close (scb->fd) below. */ | |
4af53f97 PM |
227 | if (CancelIo) |
228 | CancelIo ((HANDLE) _get_osfhandle (scb->fd)); | |
0ea3f30e DJ |
229 | state = scb->state; |
230 | CloseHandle (state->ov.hEvent); | |
231 | CloseHandle (state->except_event); | |
232 | ||
233 | if (scb->fd < 0) | |
234 | return; | |
235 | ||
236 | close (scb->fd); | |
237 | scb->fd = -1; | |
238 | ||
239 | xfree (scb->state); | |
240 | } | |
241 | ||
242 | static void | |
243 | ser_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
244 | { | |
245 | struct ser_windows_state *state; | |
246 | COMSTAT status; | |
247 | DWORD errors; | |
248 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
249 | ||
250 | state = scb->state; | |
251 | ||
252 | *except = state->except_event; | |
253 | *read = state->ov.hEvent; | |
254 | ||
255 | if (state->in_progress) | |
256 | return; | |
257 | ||
258 | /* Reset the mask - we are only interested in any characters which | |
259 | arrive after this point, not characters which might have arrived | |
260 | and already been read. */ | |
261 | ||
262 | /* This really, really shouldn't be necessary - just the second one. | |
263 | But otherwise an internal flag for EV_RXCHAR does not get | |
264 | cleared, and we get a duplicated event, if the last batch | |
265 | of characters included at least two arriving close together. */ | |
266 | if (!SetCommMask (h, 0)) | |
267 | warning (_("ser_windows_wait_handle: reseting mask failed")); | |
268 | ||
269 | if (!SetCommMask (h, EV_RXCHAR)) | |
270 | warning (_("ser_windows_wait_handle: reseting mask failed (2)")); | |
271 | ||
272 | /* There's a potential race condition here; we must check cbInQue | |
273 | and not wait if that's nonzero. */ | |
274 | ||
275 | ClearCommError (h, &errors, &status); | |
276 | if (status.cbInQue > 0) | |
277 | { | |
278 | SetEvent (state->ov.hEvent); | |
279 | return; | |
280 | } | |
281 | ||
282 | state->in_progress = 1; | |
283 | ResetEvent (state->ov.hEvent); | |
284 | state->lastCommMask = -2; | |
285 | if (WaitCommEvent (h, &state->lastCommMask, &state->ov)) | |
286 | { | |
287 | gdb_assert (state->lastCommMask & EV_RXCHAR); | |
288 | SetEvent (state->ov.hEvent); | |
289 | } | |
290 | else | |
291 | gdb_assert (GetLastError () == ERROR_IO_PENDING); | |
292 | } | |
293 | ||
294 | static int | |
295 | ser_windows_read_prim (struct serial *scb, size_t count) | |
296 | { | |
297 | struct ser_windows_state *state; | |
298 | OVERLAPPED ov; | |
299 | DWORD bytes_read, bytes_read_tmp; | |
300 | HANDLE h; | |
301 | gdb_byte *p; | |
302 | ||
303 | state = scb->state; | |
304 | if (state->in_progress) | |
305 | { | |
306 | WaitForSingleObject (state->ov.hEvent, INFINITE); | |
307 | state->in_progress = 0; | |
308 | ResetEvent (state->ov.hEvent); | |
309 | } | |
310 | ||
311 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
312 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
313 | h = (HANDLE) _get_osfhandle (scb->fd); | |
314 | ||
315 | if (!ReadFile (h, scb->buf, /* count */ 1, &bytes_read, &ov)) | |
316 | { | |
317 | if (GetLastError () != ERROR_IO_PENDING | |
318 | || !GetOverlappedResult (h, &ov, &bytes_read, TRUE)) | |
319 | bytes_read = -1; | |
320 | } | |
321 | ||
322 | CloseHandle (ov.hEvent); | |
323 | return bytes_read; | |
324 | } | |
325 | ||
326 | static int | |
327 | ser_windows_write_prim (struct serial *scb, const void *buf, size_t len) | |
328 | { | |
329 | struct ser_windows_state *state; | |
330 | OVERLAPPED ov; | |
331 | DWORD bytes_written; | |
332 | HANDLE h; | |
333 | ||
334 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
335 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
336 | h = (HANDLE) _get_osfhandle (scb->fd); | |
337 | if (!WriteFile (h, buf, len, &bytes_written, &ov)) | |
338 | { | |
339 | if (GetLastError () != ERROR_IO_PENDING | |
340 | || !GetOverlappedResult (h, &ov, &bytes_written, TRUE)) | |
341 | bytes_written = -1; | |
342 | } | |
343 | ||
344 | CloseHandle (ov.hEvent); | |
345 | return bytes_written; | |
346 | } | |
347 | ||
4577549b DJ |
348 | /* On Windows, gdb_select is implemented using WaitForMulpleObjects. |
349 | A "select thread" is created for each file descriptor. These | |
350 | threads looks for activity on the corresponding descriptor, using | |
351 | whatever techniques are appropriate for the descriptor type. When | |
352 | that activity occurs, the thread signals an appropriate event, | |
353 | which wakes up WaitForMultipleObjects. | |
354 | ||
355 | Each select thread is in one of two states: stopped or started. | |
356 | Select threads begin in the stopped state. When gdb_select is | |
357 | called, threads corresponding to the descriptors of interest are | |
358 | started by calling a wait_handle function. Each thread that | |
359 | notices activity signals the appropriate event and then reenters | |
360 | the stopped state. Before gdb_select returns it calls the | |
361 | wait_handle_done functions, which return the threads to the stopped | |
362 | state. */ | |
363 | ||
364 | enum select_thread_state { | |
365 | STS_STARTED, | |
366 | STS_STOPPED | |
367 | }; | |
368 | ||
0ea3f30e DJ |
369 | struct ser_console_state |
370 | { | |
4577549b DJ |
371 | /* Signaled by the select thread to indicate that data is available |
372 | on the file descriptor. */ | |
0ea3f30e | 373 | HANDLE read_event; |
4577549b DJ |
374 | /* Signaled by the select thread to indicate that an exception has |
375 | occurred on the file descriptor. */ | |
0ea3f30e | 376 | HANDLE except_event; |
4577549b DJ |
377 | /* Signaled by the select thread to indicate that it has entered the |
378 | started state. HAVE_STARTED and HAVE_STOPPED are never signaled | |
379 | simultaneously. */ | |
380 | HANDLE have_started; | |
381 | /* Signaled by the select thread to indicate that it has stopped, | |
382 | either because data is available (and READ_EVENT is signaled), | |
383 | because an exception has occurred (and EXCEPT_EVENT is signaled), | |
384 | or because STOP_SELECT was signaled. */ | |
385 | HANDLE have_stopped; | |
0ea3f30e | 386 | |
4577549b DJ |
387 | /* Signaled by the main program to tell the select thread to enter |
388 | the started state. */ | |
0ea3f30e | 389 | HANDLE start_select; |
4577549b | 390 | /* Signaled by the main program to tell the select thread to enter |
c378eb4e | 391 | the stopped state. */ |
0ea3f30e | 392 | HANDLE stop_select; |
4577549b DJ |
393 | /* Signaled by the main program to tell the select thread to |
394 | exit. */ | |
c3e2b812 | 395 | HANDLE exit_select; |
c3e2b812 | 396 | |
4577549b | 397 | /* The handle for the select thread. */ |
c3e2b812 | 398 | HANDLE thread; |
4577549b DJ |
399 | /* The state of the select thread. This field is only accessed in |
400 | the main program, never by the select thread itself. */ | |
401 | enum select_thread_state thread_state; | |
0ea3f30e DJ |
402 | }; |
403 | ||
4577549b DJ |
404 | /* Called by a select thread to enter the stopped state. This |
405 | function does not return until the thread has re-entered the | |
406 | started state. */ | |
407 | static void | |
408 | select_thread_wait (struct ser_console_state *state) | |
409 | { | |
410 | HANDLE wait_events[2]; | |
411 | ||
412 | /* There are two things that can wake us up: a request that we enter | |
413 | the started state, or that we exit this thread. */ | |
414 | wait_events[0] = state->start_select; | |
415 | wait_events[1] = state->exit_select; | |
416 | if (WaitForMultipleObjects (2, wait_events, FALSE, INFINITE) | |
417 | != WAIT_OBJECT_0) | |
418 | /* Either the EXIT_SELECT event was signaled (requesting that the | |
419 | thread exit) or an error has occurred. In either case, we exit | |
420 | the thread. */ | |
421 | ExitThread (0); | |
422 | ||
423 | /* We are now in the started state. */ | |
424 | SetEvent (state->have_started); | |
425 | } | |
426 | ||
427 | typedef DWORD WINAPI (*thread_fn_type)(void *); | |
428 | ||
429 | /* Create a new select thread for SCB executing THREAD_FN. The STATE | |
430 | will be filled in by this function before return. */ | |
a95babbf | 431 | static void |
4577549b DJ |
432 | create_select_thread (thread_fn_type thread_fn, |
433 | struct serial *scb, | |
434 | struct ser_console_state *state) | |
435 | { | |
436 | DWORD threadId; | |
437 | ||
438 | /* Create all of the events. These are all auto-reset events. */ | |
439 | state->read_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
440 | state->except_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
441 | state->have_started = CreateEvent (NULL, FALSE, FALSE, NULL); | |
442 | state->have_stopped = CreateEvent (NULL, FALSE, FALSE, NULL); | |
443 | state->start_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
444 | state->stop_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
445 | state->exit_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
446 | ||
447 | state->thread = CreateThread (NULL, 0, thread_fn, scb, 0, &threadId); | |
448 | /* The thread begins in the stopped state. */ | |
449 | state->thread_state = STS_STOPPED; | |
450 | } | |
451 | ||
452 | /* Destroy the select thread indicated by STATE. */ | |
453 | static void | |
454 | destroy_select_thread (struct ser_console_state *state) | |
455 | { | |
456 | /* Ask the thread to exit. */ | |
457 | SetEvent (state->exit_select); | |
458 | /* Wait until it does. */ | |
459 | WaitForSingleObject (state->thread, INFINITE); | |
460 | ||
461 | /* Destroy the events. */ | |
462 | CloseHandle (state->read_event); | |
463 | CloseHandle (state->except_event); | |
464 | CloseHandle (state->have_started); | |
465 | CloseHandle (state->have_stopped); | |
466 | CloseHandle (state->start_select); | |
467 | CloseHandle (state->stop_select); | |
468 | CloseHandle (state->exit_select); | |
469 | } | |
470 | ||
471 | /* Called by gdb_select to start the select thread indicated by STATE. | |
472 | This function does not return until the thread has started. */ | |
473 | static void | |
474 | start_select_thread (struct ser_console_state *state) | |
475 | { | |
476 | /* Ask the thread to start. */ | |
477 | SetEvent (state->start_select); | |
478 | /* Wait until it does. */ | |
479 | WaitForSingleObject (state->have_started, INFINITE); | |
480 | /* The thread is now started. */ | |
481 | state->thread_state = STS_STARTED; | |
482 | } | |
483 | ||
484 | /* Called by gdb_select to stop the select thread indicated by STATE. | |
485 | This function does not return until the thread has stopped. */ | |
486 | static void | |
487 | stop_select_thread (struct ser_console_state *state) | |
488 | { | |
489 | /* If the thread is already in the stopped state, we have nothing to | |
490 | do. Some of the wait_handle functions avoid calling | |
491 | start_select_thread if they notice activity on the relevant file | |
492 | descriptors. The wait_handle_done functions still call | |
493 | stop_select_thread -- but it is already stopped. */ | |
494 | if (state->thread_state != STS_STARTED) | |
495 | return; | |
496 | /* Ask the thread to stop. */ | |
497 | SetEvent (state->stop_select); | |
498 | /* Wait until it does. */ | |
499 | WaitForSingleObject (state->have_stopped, INFINITE); | |
500 | /* The thread is now stopped. */ | |
501 | state->thread_state = STS_STOPPED; | |
502 | } | |
503 | ||
0ea3f30e DJ |
504 | static DWORD WINAPI |
505 | console_select_thread (void *arg) | |
506 | { | |
507 | struct serial *scb = arg; | |
c3e2b812 DJ |
508 | struct ser_console_state *state; |
509 | int event_index; | |
0ea3f30e DJ |
510 | HANDLE h; |
511 | ||
c3e2b812 DJ |
512 | state = scb->state; |
513 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
514 | |
515 | while (1) | |
516 | { | |
517 | HANDLE wait_events[2]; | |
518 | INPUT_RECORD record; | |
519 | DWORD n_records; | |
520 | ||
4577549b | 521 | select_thread_wait (state); |
c3e2b812 | 522 | |
4577549b DJ |
523 | while (1) |
524 | { | |
525 | wait_events[0] = state->stop_select; | |
526 | wait_events[1] = h; | |
0ea3f30e | 527 | |
3e43a32a MS |
528 | event_index = WaitForMultipleObjects (2, wait_events, |
529 | FALSE, INFINITE); | |
0ea3f30e | 530 | |
4577549b DJ |
531 | if (event_index == WAIT_OBJECT_0 |
532 | || WaitForSingleObject (state->stop_select, 0) == WAIT_OBJECT_0) | |
533 | break; | |
0ea3f30e | 534 | |
4577549b DJ |
535 | if (event_index != WAIT_OBJECT_0 + 1) |
536 | { | |
537 | /* Wait must have failed; assume an error has occured, e.g. | |
538 | the handle has been closed. */ | |
539 | SetEvent (state->except_event); | |
540 | break; | |
541 | } | |
0ea3f30e | 542 | |
4577549b DJ |
543 | /* We've got a pending event on the console. See if it's |
544 | of interest. */ | |
545 | if (!PeekConsoleInput (h, &record, 1, &n_records) || n_records != 1) | |
546 | { | |
547 | /* Something went wrong. Maybe the console is gone. */ | |
548 | SetEvent (state->except_event); | |
549 | break; | |
550 | } | |
0ea3f30e | 551 | |
4577549b | 552 | if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) |
c3e2b812 | 553 | { |
4577549b DJ |
554 | WORD keycode = record.Event.KeyEvent.wVirtualKeyCode; |
555 | ||
556 | /* Ignore events containing only control keys. We must | |
557 | recognize "enhanced" keys which we are interested in | |
558 | reading via getch, if they do not map to ASCII. But we | |
559 | do not want to report input available for e.g. the | |
560 | control key alone. */ | |
561 | ||
562 | if (record.Event.KeyEvent.uChar.AsciiChar != 0 | |
563 | || keycode == VK_PRIOR | |
564 | || keycode == VK_NEXT | |
565 | || keycode == VK_END | |
566 | || keycode == VK_HOME | |
567 | || keycode == VK_LEFT | |
568 | || keycode == VK_UP | |
569 | || keycode == VK_RIGHT | |
570 | || keycode == VK_DOWN | |
571 | || keycode == VK_INSERT | |
572 | || keycode == VK_DELETE) | |
573 | { | |
574 | /* This is really a keypress. */ | |
575 | SetEvent (state->read_event); | |
576 | break; | |
577 | } | |
c3e2b812 | 578 | } |
4577549b DJ |
579 | |
580 | /* Otherwise discard it and wait again. */ | |
581 | ReadConsoleInput (h, &record, 1, &n_records); | |
0ea3f30e DJ |
582 | } |
583 | ||
4577549b | 584 | SetEvent(state->have_stopped); |
0ea3f30e | 585 | } |
a32d7317 | 586 | return 0; |
0ea3f30e DJ |
587 | } |
588 | ||
589 | static int | |
590 | fd_is_pipe (int fd) | |
591 | { | |
592 | if (PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, NULL, NULL)) | |
593 | return 1; | |
594 | else | |
595 | return 0; | |
596 | } | |
597 | ||
7e71daaa JG |
598 | static int |
599 | fd_is_file (int fd) | |
600 | { | |
601 | if (GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_DISK) | |
602 | return 1; | |
603 | else | |
604 | return 0; | |
605 | } | |
606 | ||
0ea3f30e DJ |
607 | static DWORD WINAPI |
608 | pipe_select_thread (void *arg) | |
609 | { | |
610 | struct serial *scb = arg; | |
c3e2b812 DJ |
611 | struct ser_console_state *state; |
612 | int event_index; | |
0ea3f30e DJ |
613 | HANDLE h; |
614 | ||
c3e2b812 DJ |
615 | state = scb->state; |
616 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
617 | |
618 | while (1) | |
619 | { | |
0ea3f30e DJ |
620 | DWORD n_avail; |
621 | ||
4577549b | 622 | select_thread_wait (state); |
c3e2b812 | 623 | |
4577549b DJ |
624 | /* Wait for something to happen on the pipe. */ |
625 | while (1) | |
0ea3f30e | 626 | { |
4577549b DJ |
627 | if (!PeekNamedPipe (h, NULL, 0, NULL, &n_avail, NULL)) |
628 | { | |
629 | SetEvent (state->except_event); | |
630 | break; | |
631 | } | |
0ea3f30e | 632 | |
4577549b DJ |
633 | if (n_avail > 0) |
634 | { | |
635 | SetEvent (state->read_event); | |
636 | break; | |
637 | } | |
0ea3f30e | 638 | |
4577549b DJ |
639 | /* Delay 10ms before checking again, but allow the stop |
640 | event to wake us. */ | |
641 | if (WaitForSingleObject (state->stop_select, 10) == WAIT_OBJECT_0) | |
642 | break; | |
643 | } | |
0ea3f30e | 644 | |
4577549b | 645 | SetEvent (state->have_stopped); |
0ea3f30e | 646 | } |
a32d7317 | 647 | return 0; |
0ea3f30e DJ |
648 | } |
649 | ||
7e71daaa JG |
650 | static DWORD WINAPI |
651 | file_select_thread (void *arg) | |
652 | { | |
653 | struct serial *scb = arg; | |
654 | struct ser_console_state *state; | |
655 | int event_index; | |
656 | HANDLE h; | |
657 | ||
658 | state = scb->state; | |
659 | h = (HANDLE) _get_osfhandle (scb->fd); | |
660 | ||
661 | while (1) | |
662 | { | |
4577549b | 663 | select_thread_wait (state); |
7e71daaa | 664 | |
3e43a32a MS |
665 | if (SetFilePointer (h, 0, NULL, FILE_CURRENT) |
666 | == INVALID_SET_FILE_POINTER) | |
4577549b DJ |
667 | SetEvent (state->except_event); |
668 | else | |
669 | SetEvent (state->read_event); | |
7e71daaa | 670 | |
4577549b | 671 | SetEvent (state->have_stopped); |
7e71daaa | 672 | } |
a32d7317 | 673 | return 0; |
7e71daaa JG |
674 | } |
675 | ||
0ea3f30e DJ |
676 | static void |
677 | ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
678 | { | |
679 | struct ser_console_state *state = scb->state; | |
680 | ||
681 | if (state == NULL) | |
682 | { | |
4577549b | 683 | thread_fn_type thread_fn; |
0ea3f30e DJ |
684 | int is_tty; |
685 | ||
686 | is_tty = isatty (scb->fd); | |
7e71daaa | 687 | if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd)) |
0ea3f30e DJ |
688 | { |
689 | *read = NULL; | |
690 | *except = NULL; | |
691 | return; | |
692 | } | |
693 | ||
694 | state = xmalloc (sizeof (struct ser_console_state)); | |
695 | memset (state, 0, sizeof (struct ser_console_state)); | |
696 | scb->state = state; | |
697 | ||
0ea3f30e | 698 | if (is_tty) |
4577549b | 699 | thread_fn = console_select_thread; |
7e71daaa | 700 | else if (fd_is_pipe (scb->fd)) |
4577549b | 701 | thread_fn = pipe_select_thread; |
7e71daaa | 702 | else |
4577549b DJ |
703 | thread_fn = file_select_thread; |
704 | ||
705 | create_select_thread (thread_fn, scb, state); | |
0ea3f30e DJ |
706 | } |
707 | ||
c3e2b812 DJ |
708 | *read = state->read_event; |
709 | *except = state->except_event; | |
710 | ||
711 | /* Start from a blank state. */ | |
0ea3f30e DJ |
712 | ResetEvent (state->read_event); |
713 | ResetEvent (state->except_event); | |
c3e2b812 DJ |
714 | ResetEvent (state->stop_select); |
715 | ||
716 | /* First check for a key already in the buffer. If there is one, | |
717 | we don't need a thread. This also catches the second key of | |
718 | multi-character returns from getch, for instance for arrow | |
719 | keys. The second half is in a C library internal buffer, | |
720 | and PeekConsoleInput will not find it. */ | |
721 | if (_kbhit ()) | |
722 | { | |
723 | SetEvent (state->read_event); | |
724 | return; | |
725 | } | |
0ea3f30e | 726 | |
c3e2b812 | 727 | /* Otherwise, start the select thread. */ |
4577549b | 728 | start_select_thread (state); |
c3e2b812 | 729 | } |
0ea3f30e | 730 | |
c3e2b812 DJ |
731 | static void |
732 | ser_console_done_wait_handle (struct serial *scb) | |
733 | { | |
734 | struct ser_console_state *state = scb->state; | |
735 | ||
736 | if (state == NULL) | |
737 | return; | |
738 | ||
4577549b | 739 | stop_select_thread (state); |
0ea3f30e DJ |
740 | } |
741 | ||
742 | static void | |
743 | ser_console_close (struct serial *scb) | |
744 | { | |
745 | struct ser_console_state *state = scb->state; | |
746 | ||
747 | if (scb->state) | |
748 | { | |
4577549b | 749 | destroy_select_thread (state); |
0ea3f30e DJ |
750 | xfree (scb->state); |
751 | } | |
752 | } | |
753 | ||
754 | struct ser_console_ttystate | |
755 | { | |
756 | int is_a_tty; | |
757 | }; | |
758 | ||
759 | static serial_ttystate | |
760 | ser_console_get_tty_state (struct serial *scb) | |
761 | { | |
762 | if (isatty (scb->fd)) | |
763 | { | |
764 | struct ser_console_ttystate *state; | |
433759f7 | 765 | |
0ea3f30e DJ |
766 | state = (struct ser_console_ttystate *) xmalloc (sizeof *state); |
767 | state->is_a_tty = 1; | |
768 | return state; | |
769 | } | |
770 | else | |
771 | return NULL; | |
772 | } | |
773 | ||
5f1fb6dc JB |
774 | struct pipe_state |
775 | { | |
776 | /* Since we use the pipe_select_thread for our select emulation, | |
777 | we need to place the state structure it requires at the front | |
778 | of our state. */ | |
779 | struct ser_console_state wait; | |
780 | ||
781 | /* The pex obj for our (one-stage) pipeline. */ | |
782 | struct pex_obj *pex; | |
783 | ||
784 | /* Streams for the pipeline's input and output. */ | |
785 | FILE *input, *output; | |
786 | }; | |
787 | ||
788 | static struct pipe_state * | |
789 | make_pipe_state (void) | |
790 | { | |
791 | struct pipe_state *ps = XMALLOC (struct pipe_state); | |
792 | ||
793 | memset (ps, 0, sizeof (*ps)); | |
794 | ps->wait.read_event = INVALID_HANDLE_VALUE; | |
795 | ps->wait.except_event = INVALID_HANDLE_VALUE; | |
796 | ps->wait.start_select = INVALID_HANDLE_VALUE; | |
797 | ps->wait.stop_select = INVALID_HANDLE_VALUE; | |
798 | ||
799 | return ps; | |
800 | } | |
801 | ||
802 | static void | |
803 | free_pipe_state (struct pipe_state *ps) | |
804 | { | |
805 | int saved_errno = errno; | |
806 | ||
807 | if (ps->wait.read_event != INVALID_HANDLE_VALUE) | |
4577549b | 808 | destroy_select_thread (&ps->wait); |
5f1fb6dc JB |
809 | |
810 | /* Close the pipe to the child. We must close the pipe before | |
811 | calling pex_free because pex_free will wait for the child to exit | |
812 | and the child will not exit until the pipe is closed. */ | |
813 | if (ps->input) | |
814 | fclose (ps->input); | |
815 | if (ps->pex) | |
58f07bae PA |
816 | { |
817 | pex_free (ps->pex); | |
818 | /* pex_free closes ps->output. */ | |
819 | } | |
820 | else if (ps->output) | |
821 | fclose (ps->output); | |
5f1fb6dc JB |
822 | |
823 | xfree (ps); | |
824 | ||
825 | errno = saved_errno; | |
826 | } | |
827 | ||
828 | static void | |
829 | cleanup_pipe_state (void *untyped) | |
830 | { | |
831 | struct pipe_state *ps = untyped; | |
832 | ||
833 | free_pipe_state (ps); | |
834 | } | |
835 | ||
836 | static int | |
837 | pipe_windows_open (struct serial *scb, const char *name) | |
838 | { | |
ef7723eb | 839 | struct pipe_state *ps; |
65cc4390 | 840 | FILE *pex_stderr; |
efdb2a86 PA |
841 | char **argv; |
842 | struct cleanup *back_to; | |
ef7723eb | 843 | |
d1a41061 PP |
844 | if (name == NULL) |
845 | error_no_arg (_("child command")); | |
846 | ||
efdb2a86 PA |
847 | argv = gdb_buildargv (name); |
848 | back_to = make_cleanup_freeargv (argv); | |
d1a41061 | 849 | |
5f1fb6dc | 850 | if (! argv[0] || argv[0][0] == '\0') |
a73c6dcd | 851 | error (_("missing child command")); |
5f1fb6dc | 852 | |
ef7723eb | 853 | ps = make_pipe_state (); |
5f1fb6dc JB |
854 | make_cleanup (cleanup_pipe_state, ps); |
855 | ||
856 | ps->pex = pex_init (PEX_USE_PIPES, "target remote pipe", NULL); | |
857 | if (! ps->pex) | |
858 | goto fail; | |
859 | ps->input = pex_input_pipe (ps->pex, 1); | |
860 | if (! ps->input) | |
861 | goto fail; | |
862 | ||
863 | { | |
864 | int err; | |
865 | const char *err_msg | |
65cc4390 VP |
866 | = pex_run (ps->pex, PEX_SEARCH | PEX_BINARY_INPUT | PEX_BINARY_OUTPUT |
867 | | PEX_STDERR_TO_PIPE, | |
5f1fb6dc JB |
868 | argv[0], argv, NULL, NULL, |
869 | &err); | |
870 | ||
871 | if (err_msg) | |
872 | { | |
873 | /* Our caller expects us to return -1, but all they'll do with | |
874 | it generally is print the message based on errno. We have | |
875 | all the same information here, plus err_msg provided by | |
876 | pex_run, so we just raise the error here. */ | |
877 | if (err) | |
a73c6dcd | 878 | error (_("error starting child process '%s': %s: %s"), |
5f1fb6dc JB |
879 | name, err_msg, safe_strerror (err)); |
880 | else | |
a73c6dcd | 881 | error (_("error starting child process '%s': %s"), |
5f1fb6dc JB |
882 | name, err_msg); |
883 | } | |
884 | } | |
885 | ||
886 | ps->output = pex_read_output (ps->pex, 1); | |
887 | if (! ps->output) | |
888 | goto fail; | |
5f1fb6dc | 889 | scb->fd = fileno (ps->output); |
65cc4390 VP |
890 | |
891 | pex_stderr = pex_read_err (ps->pex, 1); | |
892 | if (! pex_stderr) | |
893 | goto fail; | |
894 | scb->error_fd = fileno (pex_stderr); | |
895 | ||
5f1fb6dc JB |
896 | scb->state = (void *) ps; |
897 | ||
898 | discard_cleanups (back_to); | |
899 | return 0; | |
900 | ||
901 | fail: | |
902 | do_cleanups (back_to); | |
903 | return -1; | |
904 | } | |
905 | ||
58f07bae PA |
906 | static int |
907 | pipe_windows_fdopen (struct serial *scb, int fd) | |
908 | { | |
909 | struct pipe_state *ps; | |
910 | ||
911 | ps = make_pipe_state (); | |
912 | ||
913 | ps->input = fdopen (fd, "r+"); | |
914 | if (! ps->input) | |
915 | goto fail; | |
916 | ||
917 | ps->output = fdopen (fd, "r+"); | |
918 | if (! ps->output) | |
919 | goto fail; | |
920 | ||
921 | scb->fd = fd; | |
922 | scb->state = (void *) ps; | |
923 | ||
924 | return 0; | |
925 | ||
926 | fail: | |
927 | free_pipe_state (ps); | |
928 | return -1; | |
929 | } | |
5f1fb6dc JB |
930 | |
931 | static void | |
932 | pipe_windows_close (struct serial *scb) | |
933 | { | |
934 | struct pipe_state *ps = scb->state; | |
935 | ||
936 | /* In theory, we should try to kill the subprocess here, but the pex | |
937 | interface doesn't give us enough information to do that. Usually | |
938 | closing the input pipe will get the message across. */ | |
939 | ||
940 | free_pipe_state (ps); | |
941 | } | |
942 | ||
943 | ||
944 | static int | |
945 | pipe_windows_read (struct serial *scb, size_t count) | |
946 | { | |
4998c1df | 947 | HANDLE pipeline_out = (HANDLE) _get_osfhandle (scb->fd); |
ef7723eb VP |
948 | DWORD available; |
949 | DWORD bytes_read; | |
950 | ||
5f1fb6dc JB |
951 | if (pipeline_out == INVALID_HANDLE_VALUE) |
952 | return -1; | |
953 | ||
5f1fb6dc JB |
954 | if (! PeekNamedPipe (pipeline_out, NULL, 0, NULL, &available, NULL)) |
955 | return -1; | |
956 | ||
957 | if (count > available) | |
958 | count = available; | |
959 | ||
5f1fb6dc JB |
960 | if (! ReadFile (pipeline_out, scb->buf, count, &bytes_read, NULL)) |
961 | return -1; | |
962 | ||
963 | return bytes_read; | |
964 | } | |
965 | ||
966 | ||
967 | static int | |
968 | pipe_windows_write (struct serial *scb, const void *buf, size_t count) | |
969 | { | |
970 | struct pipe_state *ps = scb->state; | |
ef7723eb VP |
971 | HANDLE pipeline_in; |
972 | DWORD written; | |
973 | ||
5f1fb6dc JB |
974 | int pipeline_in_fd = fileno (ps->input); |
975 | if (pipeline_in_fd < 0) | |
976 | return -1; | |
977 | ||
ef7723eb | 978 | pipeline_in = (HANDLE) _get_osfhandle (pipeline_in_fd); |
5f1fb6dc JB |
979 | if (pipeline_in == INVALID_HANDLE_VALUE) |
980 | return -1; | |
981 | ||
5f1fb6dc JB |
982 | if (! WriteFile (pipeline_in, buf, count, &written, NULL)) |
983 | return -1; | |
984 | ||
985 | return written; | |
986 | } | |
987 | ||
988 | ||
989 | static void | |
990 | pipe_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
991 | { | |
992 | struct pipe_state *ps = scb->state; | |
993 | ||
994 | /* Have we allocated our events yet? */ | |
995 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
4577549b DJ |
996 | /* Start the thread. */ |
997 | create_select_thread (pipe_select_thread, scb, &ps->wait); | |
5f1fb6dc | 998 | |
774a49c0 DJ |
999 | *read = ps->wait.read_event; |
1000 | *except = ps->wait.except_event; | |
1001 | ||
1002 | /* Start from a blank state. */ | |
5f1fb6dc JB |
1003 | ResetEvent (ps->wait.read_event); |
1004 | ResetEvent (ps->wait.except_event); | |
774a49c0 | 1005 | ResetEvent (ps->wait.stop_select); |
5f1fb6dc | 1006 | |
4577549b | 1007 | start_select_thread (&ps->wait); |
5f1fb6dc JB |
1008 | } |
1009 | ||
774a49c0 DJ |
1010 | static void |
1011 | pipe_done_wait_handle (struct serial *scb) | |
1012 | { | |
1013 | struct pipe_state *ps = scb->state; | |
1014 | ||
1015 | /* Have we allocated our events yet? */ | |
1016 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
1017 | return; | |
1018 | ||
4577549b | 1019 | stop_select_thread (&ps->wait); |
774a49c0 | 1020 | } |
5f1fb6dc | 1021 | |
65cc4390 VP |
1022 | static int |
1023 | pipe_avail (struct serial *scb, int fd) | |
1024 | { | |
1025 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
1026 | DWORD numBytes; | |
1027 | BOOL r = PeekNamedPipe (h, NULL, 0, NULL, &numBytes, NULL); | |
433759f7 | 1028 | |
65cc4390 VP |
1029 | if (r == FALSE) |
1030 | numBytes = 0; | |
1031 | return numBytes; | |
1032 | } | |
1033 | ||
58f07bae PA |
1034 | int |
1035 | gdb_pipe (int pdes[2]) | |
1036 | { | |
1037 | if (_pipe (pdes, 512, _O_BINARY | _O_NOINHERIT) == -1) | |
1038 | return -1; | |
1039 | return 0; | |
1040 | } | |
1041 | ||
0ea3f30e DJ |
1042 | struct net_windows_state |
1043 | { | |
4577549b DJ |
1044 | struct ser_console_state base; |
1045 | ||
0ea3f30e DJ |
1046 | HANDLE sock_event; |
1047 | }; | |
1048 | ||
1049 | static DWORD WINAPI | |
1050 | net_windows_select_thread (void *arg) | |
1051 | { | |
1052 | struct serial *scb = arg; | |
4577549b | 1053 | struct net_windows_state *state; |
c3e2b812 | 1054 | int event_index; |
0ea3f30e | 1055 | |
c3e2b812 | 1056 | state = scb->state; |
0ea3f30e DJ |
1057 | |
1058 | while (1) | |
1059 | { | |
1060 | HANDLE wait_events[2]; | |
1061 | WSANETWORKEVENTS events; | |
1062 | ||
4577549b | 1063 | select_thread_wait (&state->base); |
c3e2b812 | 1064 | |
4577549b | 1065 | wait_events[0] = state->base.stop_select; |
0ea3f30e DJ |
1066 | wait_events[1] = state->sock_event; |
1067 | ||
1068 | event_index = WaitForMultipleObjects (2, wait_events, FALSE, INFINITE); | |
1069 | ||
1070 | if (event_index == WAIT_OBJECT_0 | |
4577549b DJ |
1071 | || WaitForSingleObject (state->base.stop_select, 0) == WAIT_OBJECT_0) |
1072 | /* We have been requested to stop. */ | |
1073 | ; | |
1074 | else if (event_index != WAIT_OBJECT_0 + 1) | |
1075 | /* Some error has occured. Assume that this is an error | |
1076 | condition. */ | |
1077 | SetEvent (state->base.except_event); | |
1078 | else | |
0ea3f30e | 1079 | { |
4577549b DJ |
1080 | /* Enumerate the internal network events, and reset the |
1081 | object that signalled us to catch the next event. */ | |
1082 | WSAEnumNetworkEvents (scb->fd, state->sock_event, &events); | |
1083 | ||
1084 | gdb_assert (events.lNetworkEvents & (FD_READ | FD_CLOSE)); | |
1085 | ||
1086 | if (events.lNetworkEvents & FD_READ) | |
1087 | SetEvent (state->base.read_event); | |
1088 | ||
1089 | if (events.lNetworkEvents & FD_CLOSE) | |
1090 | SetEvent (state->base.except_event); | |
0ea3f30e DJ |
1091 | } |
1092 | ||
4577549b | 1093 | SetEvent (state->base.have_stopped); |
0ea3f30e DJ |
1094 | } |
1095 | } | |
1096 | ||
1097 | static void | |
1098 | net_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1099 | { | |
1100 | struct net_windows_state *state = scb->state; | |
1101 | ||
c3e2b812 | 1102 | /* Start from a clean slate. */ |
4577549b DJ |
1103 | ResetEvent (state->base.read_event); |
1104 | ResetEvent (state->base.except_event); | |
1105 | ResetEvent (state->base.stop_select); | |
0ea3f30e | 1106 | |
4577549b DJ |
1107 | *read = state->base.read_event; |
1108 | *except = state->base.except_event; | |
c3e2b812 DJ |
1109 | |
1110 | /* Check any pending events. This both avoids starting the thread | |
1111 | unnecessarily, and handles stray FD_READ events (see below). */ | |
1112 | if (WaitForSingleObject (state->sock_event, 0) == WAIT_OBJECT_0) | |
1113 | { | |
1114 | WSANETWORKEVENTS events; | |
1115 | int any = 0; | |
1116 | ||
1117 | /* Enumerate the internal network events, and reset the object that | |
1118 | signalled us to catch the next event. */ | |
1119 | WSAEnumNetworkEvents (scb->fd, state->sock_event, &events); | |
1120 | ||
1121 | /* You'd think that FD_READ or FD_CLOSE would be set here. But, | |
1122 | sometimes, neither is. I suspect that the FD_READ is set and | |
1123 | the corresponding event signalled while recv is running, and | |
1124 | the FD_READ is then lowered when recv consumes all the data, | |
1125 | but there's no way to un-signal the event. This isn't a | |
1126 | problem for the call in net_select_thread, since any new | |
1127 | events after this point will not have been drained by recv. | |
1128 | It just means that we can't have the obvious assert here. */ | |
1129 | ||
1130 | /* If there is a read event, it might be still valid, or it might | |
1131 | not be - it may have been signalled before we last called | |
1132 | recv. Double-check that there is data. */ | |
1133 | if (events.lNetworkEvents & FD_READ) | |
1134 | { | |
1135 | unsigned long available; | |
1136 | ||
1137 | if (ioctlsocket (scb->fd, FIONREAD, &available) == 0 | |
1138 | && available > 0) | |
1139 | { | |
4577549b | 1140 | SetEvent (state->base.read_event); |
c3e2b812 DJ |
1141 | any = 1; |
1142 | } | |
1143 | else | |
1144 | /* Oops, no data. This call to recv will cause future | |
1145 | data to retrigger the event, e.g. while we are | |
1146 | in net_select_thread. */ | |
1147 | recv (scb->fd, NULL, 0, 0); | |
1148 | } | |
1149 | ||
1150 | /* If there's a close event, then record it - it is obviously | |
1151 | still valid, and it will not be resignalled. */ | |
1152 | if (events.lNetworkEvents & FD_CLOSE) | |
1153 | { | |
4577549b | 1154 | SetEvent (state->base.except_event); |
c3e2b812 DJ |
1155 | any = 1; |
1156 | } | |
1157 | ||
1158 | /* If we set either handle, there's no need to wake the thread. */ | |
1159 | if (any) | |
1160 | return; | |
1161 | } | |
1162 | ||
4577549b | 1163 | start_select_thread (&state->base); |
c3e2b812 DJ |
1164 | } |
1165 | ||
1166 | static void | |
1167 | net_windows_done_wait_handle (struct serial *scb) | |
1168 | { | |
1169 | struct net_windows_state *state = scb->state; | |
1170 | ||
4577549b | 1171 | stop_select_thread (&state->base); |
0ea3f30e DJ |
1172 | } |
1173 | ||
1174 | static int | |
1175 | net_windows_open (struct serial *scb, const char *name) | |
1176 | { | |
1177 | struct net_windows_state *state; | |
1178 | int ret; | |
1179 | DWORD threadId; | |
1180 | ||
1181 | ret = net_open (scb, name); | |
1182 | if (ret != 0) | |
1183 | return ret; | |
1184 | ||
1185 | state = xmalloc (sizeof (struct net_windows_state)); | |
1186 | memset (state, 0, sizeof (struct net_windows_state)); | |
1187 | scb->state = state; | |
1188 | ||
0ea3f30e DJ |
1189 | /* Associate an event with the socket. */ |
1190 | state->sock_event = CreateEvent (0, TRUE, FALSE, 0); | |
1191 | WSAEventSelect (scb->fd, state->sock_event, FD_READ | FD_CLOSE); | |
1192 | ||
4577549b DJ |
1193 | /* Start the thread. */ |
1194 | create_select_thread (net_windows_select_thread, scb, &state->base); | |
0ea3f30e DJ |
1195 | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | ||
1200 | static void | |
1201 | net_windows_close (struct serial *scb) | |
1202 | { | |
1203 | struct net_windows_state *state = scb->state; | |
1204 | ||
4577549b | 1205 | destroy_select_thread (&state->base); |
0ea3f30e DJ |
1206 | CloseHandle (state->sock_event); |
1207 | ||
1208 | xfree (scb->state); | |
1209 | ||
1210 | net_close (scb); | |
1211 | } | |
1212 | ||
12e8c7d7 TT |
1213 | /* The serial port driver. */ |
1214 | ||
1215 | static const struct serial_ops hardwire_ops = | |
1216 | { | |
1217 | "hardwire", | |
1218 | ser_windows_open, | |
1219 | ser_windows_close, | |
1220 | NULL, | |
1221 | ser_base_readchar, | |
1222 | ser_base_write, | |
1223 | ser_windows_flush_output, | |
1224 | ser_windows_flush_input, | |
1225 | ser_windows_send_break, | |
1226 | ser_windows_raw, | |
1227 | /* These are only used for stdin; we do not need them for serial | |
1228 | ports, so supply the standard dummies. */ | |
1229 | ser_base_get_tty_state, | |
1230 | ser_base_copy_tty_state, | |
1231 | ser_base_set_tty_state, | |
1232 | ser_base_print_tty_state, | |
1233 | ser_base_noflush_set_tty_state, | |
1234 | ser_windows_setbaudrate, | |
1235 | ser_windows_setstopbits, | |
1236 | ser_windows_drain_output, | |
1237 | ser_base_async, | |
1238 | ser_windows_read_prim, | |
1239 | ser_windows_write_prim, | |
1240 | NULL, | |
1241 | ser_windows_wait_handle | |
1242 | }; | |
1243 | ||
1244 | /* The dummy serial driver used for terminals. We only provide the | |
1245 | TTY-related methods. */ | |
1246 | ||
1247 | static const struct serial_ops tty_ops = | |
1248 | { | |
1249 | "terminal", | |
1250 | NULL, | |
1251 | ser_console_close, | |
1252 | NULL, | |
1253 | NULL, | |
1254 | NULL, | |
1255 | NULL, | |
1256 | NULL, | |
1257 | NULL, | |
1258 | NULL, | |
1259 | ser_console_get_tty_state, | |
1260 | ser_base_copy_tty_state, | |
1261 | ser_base_set_tty_state, | |
1262 | ser_base_print_tty_state, | |
1263 | ser_base_noflush_set_tty_state, | |
1264 | NULL, | |
1265 | NULL, | |
1266 | ser_base_drain_output, | |
1267 | NULL, | |
1268 | NULL, | |
1269 | NULL, | |
1270 | NULL, | |
1271 | ser_console_wait_handle, | |
1272 | ser_console_done_wait_handle | |
1273 | }; | |
1274 | ||
1275 | /* The pipe interface. */ | |
1276 | ||
1277 | static const struct serial_ops pipe_ops = | |
1278 | { | |
1279 | "pipe", | |
1280 | pipe_windows_open, | |
1281 | pipe_windows_close, | |
1282 | pipe_windows_fdopen, | |
1283 | ser_base_readchar, | |
1284 | ser_base_write, | |
1285 | ser_base_flush_output, | |
1286 | ser_base_flush_input, | |
1287 | ser_base_send_break, | |
1288 | ser_base_raw, | |
1289 | ser_base_get_tty_state, | |
1290 | ser_base_copy_tty_state, | |
1291 | ser_base_set_tty_state, | |
1292 | ser_base_print_tty_state, | |
1293 | ser_base_noflush_set_tty_state, | |
1294 | ser_base_setbaudrate, | |
1295 | ser_base_setstopbits, | |
1296 | ser_base_drain_output, | |
1297 | ser_base_async, | |
1298 | pipe_windows_read, | |
1299 | pipe_windows_write, | |
1300 | pipe_avail, | |
1301 | pipe_wait_handle, | |
1302 | pipe_done_wait_handle | |
1303 | }; | |
1304 | ||
1305 | /* The TCP/UDP socket driver. */ | |
1306 | ||
1307 | static const struct serial_ops tcp_ops = | |
1308 | { | |
1309 | "tcp", | |
1310 | net_windows_open, | |
1311 | net_windows_close, | |
1312 | NULL, | |
1313 | ser_base_readchar, | |
1314 | ser_base_write, | |
1315 | ser_base_flush_output, | |
1316 | ser_base_flush_input, | |
1317 | ser_tcp_send_break, | |
1318 | ser_base_raw, | |
1319 | ser_base_get_tty_state, | |
1320 | ser_base_copy_tty_state, | |
1321 | ser_base_set_tty_state, | |
1322 | ser_base_print_tty_state, | |
1323 | ser_base_noflush_set_tty_state, | |
1324 | ser_base_setbaudrate, | |
1325 | ser_base_setstopbits, | |
1326 | ser_base_drain_output, | |
1327 | ser_base_async, | |
1328 | net_read_prim, | |
1329 | net_write_prim, | |
1330 | NULL, | |
1331 | net_windows_wait_handle, | |
1332 | net_windows_done_wait_handle | |
1333 | }; | |
1334 | ||
0ea3f30e DJ |
1335 | void |
1336 | _initialize_ser_windows (void) | |
1337 | { | |
1338 | WSADATA wsa_data; | |
1339 | struct serial_ops *ops; | |
1340 | ||
4af53f97 PM |
1341 | HMODULE hm = NULL; |
1342 | ||
1343 | /* First find out if kernel32 exports CancelIo function. */ | |
1344 | hm = LoadLibrary ("kernel32.dll"); | |
1345 | if (hm) | |
1346 | { | |
1347 | CancelIo = (void *) GetProcAddress (hm, "CancelIo"); | |
1348 | FreeLibrary (hm); | |
1349 | } | |
1350 | else | |
1351 | CancelIo = NULL; | |
0ea3f30e | 1352 | |
12e8c7d7 TT |
1353 | serial_add_interface (&hardwire_ops); |
1354 | serial_add_interface (&tty_ops); | |
1355 | serial_add_interface (&pipe_ops); | |
5f1fb6dc | 1356 | |
0ea3f30e DJ |
1357 | /* If WinSock works, register the TCP/UDP socket driver. */ |
1358 | ||
1359 | if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0) | |
1360 | /* WinSock is unavailable. */ | |
1361 | return; | |
1362 | ||
12e8c7d7 | 1363 | serial_add_interface (&tcp_ops); |
0ea3f30e | 1364 | } |