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0ea3f30e DJ |
1 | /* Serial interface for local (hardwired) serial ports on Windows systems |
2 | ||
32d0add0 | 3 | Copyright (C) 2006-2015 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 | ||
8d749320 | 90 | state = XCNEW (struct ser_windows_state); |
0ea3f30e DJ |
91 | scb->state = state; |
92 | ||
93 | /* Create a manual reset event to watch the input buffer. */ | |
94 | state->ov.hEvent = CreateEvent (0, TRUE, FALSE, 0); | |
95 | ||
96 | /* Create a (currently unused) handle to record exceptions. */ | |
97 | state->except_event = CreateEvent (0, TRUE, FALSE, 0); | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | /* Wait for the output to drain away, as opposed to flushing (discarding) | |
103 | it. */ | |
104 | ||
105 | static int | |
106 | ser_windows_drain_output (struct serial *scb) | |
107 | { | |
108 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
109 | ||
110 | return (FlushFileBuffers (h) != 0) ? 0 : -1; | |
111 | } | |
112 | ||
113 | static int | |
114 | ser_windows_flush_output (struct serial *scb) | |
115 | { | |
116 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
117 | ||
118 | return (PurgeComm (h, PURGE_TXCLEAR) != 0) ? 0 : -1; | |
119 | } | |
120 | ||
121 | static int | |
122 | ser_windows_flush_input (struct serial *scb) | |
123 | { | |
124 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
125 | ||
126 | return (PurgeComm (h, PURGE_RXCLEAR) != 0) ? 0 : -1; | |
127 | } | |
128 | ||
129 | static int | |
130 | ser_windows_send_break (struct serial *scb) | |
131 | { | |
132 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
133 | ||
134 | if (SetCommBreak (h) == 0) | |
135 | return -1; | |
136 | ||
137 | /* Delay for 250 milliseconds. */ | |
138 | Sleep (250); | |
139 | ||
140 | if (ClearCommBreak (h)) | |
141 | return -1; | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static void | |
147 | ser_windows_raw (struct serial *scb) | |
148 | { | |
149 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
150 | DCB state; | |
151 | ||
152 | if (GetCommState (h, &state) == 0) | |
153 | return; | |
154 | ||
0ea3f30e DJ |
155 | state.fOutxCtsFlow = FALSE; |
156 | state.fOutxDsrFlow = FALSE; | |
157 | state.fDtrControl = DTR_CONTROL_ENABLE; | |
158 | state.fDsrSensitivity = FALSE; | |
159 | state.fOutX = FALSE; | |
160 | state.fInX = FALSE; | |
161 | state.fNull = FALSE; | |
162 | state.fAbortOnError = FALSE; | |
163 | state.ByteSize = 8; | |
0ea3f30e DJ |
164 | |
165 | scb->current_timeout = 0; | |
166 | ||
167 | if (SetCommState (h, &state) == 0) | |
b37520b6 | 168 | warning (_("SetCommState failed")); |
0ea3f30e DJ |
169 | } |
170 | ||
171 | static int | |
172 | ser_windows_setstopbits (struct serial *scb, int num) | |
173 | { | |
174 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
175 | DCB state; | |
176 | ||
177 | if (GetCommState (h, &state) == 0) | |
178 | return -1; | |
179 | ||
180 | switch (num) | |
181 | { | |
182 | case SERIAL_1_STOPBITS: | |
183 | state.StopBits = ONESTOPBIT; | |
184 | break; | |
185 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
186 | state.StopBits = ONE5STOPBITS; | |
187 | break; | |
188 | case SERIAL_2_STOPBITS: | |
189 | state.StopBits = TWOSTOPBITS; | |
190 | break; | |
191 | default: | |
192 | return 1; | |
193 | } | |
194 | ||
195 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
196 | } | |
197 | ||
236af5e3 YG |
198 | /* Implement the "setparity" serial_ops callback. */ |
199 | ||
200 | static int | |
201 | ser_windows_setparity (struct serial *scb, int parity) | |
202 | { | |
203 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
204 | DCB state; | |
205 | ||
206 | if (GetCommState (h, &state) == 0) | |
207 | return -1; | |
208 | ||
209 | switch (parity) | |
210 | { | |
211 | case GDBPARITY_NONE: | |
212 | state.Parity = NOPARITY; | |
213 | state.fParity = FALSE; | |
214 | break; | |
215 | case GDBPARITY_ODD: | |
216 | state.Parity = ODDPARITY; | |
217 | state.fParity = TRUE; | |
218 | break; | |
219 | case GDBPARITY_EVEN: | |
220 | state.Parity = EVENPARITY; | |
221 | state.fParity = TRUE; | |
222 | break; | |
223 | default: | |
224 | internal_warning (__FILE__, __LINE__, | |
8a4506c0 | 225 | "Incorrect parity value: %d", parity); |
236af5e3 YG |
226 | return -1; |
227 | } | |
228 | ||
229 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
230 | } | |
231 | ||
0ea3f30e DJ |
232 | static int |
233 | ser_windows_setbaudrate (struct serial *scb, int rate) | |
234 | { | |
235 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
236 | DCB state; | |
237 | ||
238 | if (GetCommState (h, &state) == 0) | |
239 | return -1; | |
240 | ||
241 | state.BaudRate = rate; | |
242 | ||
243 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
244 | } | |
245 | ||
246 | static void | |
247 | ser_windows_close (struct serial *scb) | |
248 | { | |
249 | struct ser_windows_state *state; | |
250 | ||
e25b2cfa PM |
251 | /* Stop any pending selects. On Windows 95 OS, CancelIo function does |
252 | not exist. In that case, it can be replaced by a call to CloseHandle, | |
253 | but this is not necessary here as we do close the Windows handle | |
254 | by calling close (scb->fd) below. */ | |
4af53f97 PM |
255 | if (CancelIo) |
256 | CancelIo ((HANDLE) _get_osfhandle (scb->fd)); | |
0ea3f30e DJ |
257 | state = scb->state; |
258 | CloseHandle (state->ov.hEvent); | |
259 | CloseHandle (state->except_event); | |
260 | ||
261 | if (scb->fd < 0) | |
262 | return; | |
263 | ||
264 | close (scb->fd); | |
265 | scb->fd = -1; | |
266 | ||
267 | xfree (scb->state); | |
268 | } | |
269 | ||
270 | static void | |
271 | ser_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
272 | { | |
273 | struct ser_windows_state *state; | |
274 | COMSTAT status; | |
275 | DWORD errors; | |
276 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
277 | ||
278 | state = scb->state; | |
279 | ||
280 | *except = state->except_event; | |
281 | *read = state->ov.hEvent; | |
282 | ||
283 | if (state->in_progress) | |
284 | return; | |
285 | ||
286 | /* Reset the mask - we are only interested in any characters which | |
287 | arrive after this point, not characters which might have arrived | |
288 | and already been read. */ | |
289 | ||
290 | /* This really, really shouldn't be necessary - just the second one. | |
291 | But otherwise an internal flag for EV_RXCHAR does not get | |
292 | cleared, and we get a duplicated event, if the last batch | |
293 | of characters included at least two arriving close together. */ | |
294 | if (!SetCommMask (h, 0)) | |
295 | warning (_("ser_windows_wait_handle: reseting mask failed")); | |
296 | ||
297 | if (!SetCommMask (h, EV_RXCHAR)) | |
298 | warning (_("ser_windows_wait_handle: reseting mask failed (2)")); | |
299 | ||
300 | /* There's a potential race condition here; we must check cbInQue | |
301 | and not wait if that's nonzero. */ | |
302 | ||
303 | ClearCommError (h, &errors, &status); | |
304 | if (status.cbInQue > 0) | |
305 | { | |
306 | SetEvent (state->ov.hEvent); | |
307 | return; | |
308 | } | |
309 | ||
310 | state->in_progress = 1; | |
311 | ResetEvent (state->ov.hEvent); | |
312 | state->lastCommMask = -2; | |
313 | if (WaitCommEvent (h, &state->lastCommMask, &state->ov)) | |
314 | { | |
315 | gdb_assert (state->lastCommMask & EV_RXCHAR); | |
316 | SetEvent (state->ov.hEvent); | |
317 | } | |
318 | else | |
319 | gdb_assert (GetLastError () == ERROR_IO_PENDING); | |
320 | } | |
321 | ||
322 | static int | |
323 | ser_windows_read_prim (struct serial *scb, size_t count) | |
324 | { | |
325 | struct ser_windows_state *state; | |
326 | OVERLAPPED ov; | |
327 | DWORD bytes_read, bytes_read_tmp; | |
328 | HANDLE h; | |
329 | gdb_byte *p; | |
330 | ||
331 | state = scb->state; | |
332 | if (state->in_progress) | |
333 | { | |
334 | WaitForSingleObject (state->ov.hEvent, INFINITE); | |
335 | state->in_progress = 0; | |
336 | ResetEvent (state->ov.hEvent); | |
337 | } | |
338 | ||
339 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
340 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
341 | h = (HANDLE) _get_osfhandle (scb->fd); | |
342 | ||
343 | if (!ReadFile (h, scb->buf, /* count */ 1, &bytes_read, &ov)) | |
344 | { | |
345 | if (GetLastError () != ERROR_IO_PENDING | |
346 | || !GetOverlappedResult (h, &ov, &bytes_read, TRUE)) | |
347 | bytes_read = -1; | |
348 | } | |
349 | ||
350 | CloseHandle (ov.hEvent); | |
351 | return bytes_read; | |
352 | } | |
353 | ||
354 | static int | |
355 | ser_windows_write_prim (struct serial *scb, const void *buf, size_t len) | |
356 | { | |
357 | struct ser_windows_state *state; | |
358 | OVERLAPPED ov; | |
359 | DWORD bytes_written; | |
360 | HANDLE h; | |
361 | ||
362 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
363 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
364 | h = (HANDLE) _get_osfhandle (scb->fd); | |
365 | if (!WriteFile (h, buf, len, &bytes_written, &ov)) | |
366 | { | |
367 | if (GetLastError () != ERROR_IO_PENDING | |
368 | || !GetOverlappedResult (h, &ov, &bytes_written, TRUE)) | |
369 | bytes_written = -1; | |
370 | } | |
371 | ||
372 | CloseHandle (ov.hEvent); | |
373 | return bytes_written; | |
374 | } | |
375 | ||
4577549b DJ |
376 | /* On Windows, gdb_select is implemented using WaitForMulpleObjects. |
377 | A "select thread" is created for each file descriptor. These | |
378 | threads looks for activity on the corresponding descriptor, using | |
379 | whatever techniques are appropriate for the descriptor type. When | |
380 | that activity occurs, the thread signals an appropriate event, | |
381 | which wakes up WaitForMultipleObjects. | |
382 | ||
383 | Each select thread is in one of two states: stopped or started. | |
384 | Select threads begin in the stopped state. When gdb_select is | |
385 | called, threads corresponding to the descriptors of interest are | |
386 | started by calling a wait_handle function. Each thread that | |
387 | notices activity signals the appropriate event and then reenters | |
388 | the stopped state. Before gdb_select returns it calls the | |
389 | wait_handle_done functions, which return the threads to the stopped | |
390 | state. */ | |
391 | ||
392 | enum select_thread_state { | |
393 | STS_STARTED, | |
394 | STS_STOPPED | |
395 | }; | |
396 | ||
0ea3f30e DJ |
397 | struct ser_console_state |
398 | { | |
4577549b DJ |
399 | /* Signaled by the select thread to indicate that data is available |
400 | on the file descriptor. */ | |
0ea3f30e | 401 | HANDLE read_event; |
4577549b DJ |
402 | /* Signaled by the select thread to indicate that an exception has |
403 | occurred on the file descriptor. */ | |
0ea3f30e | 404 | HANDLE except_event; |
4577549b DJ |
405 | /* Signaled by the select thread to indicate that it has entered the |
406 | started state. HAVE_STARTED and HAVE_STOPPED are never signaled | |
407 | simultaneously. */ | |
408 | HANDLE have_started; | |
409 | /* Signaled by the select thread to indicate that it has stopped, | |
410 | either because data is available (and READ_EVENT is signaled), | |
411 | because an exception has occurred (and EXCEPT_EVENT is signaled), | |
412 | or because STOP_SELECT was signaled. */ | |
413 | HANDLE have_stopped; | |
0ea3f30e | 414 | |
4577549b DJ |
415 | /* Signaled by the main program to tell the select thread to enter |
416 | the started state. */ | |
0ea3f30e | 417 | HANDLE start_select; |
4577549b | 418 | /* Signaled by the main program to tell the select thread to enter |
c378eb4e | 419 | the stopped state. */ |
0ea3f30e | 420 | HANDLE stop_select; |
4577549b DJ |
421 | /* Signaled by the main program to tell the select thread to |
422 | exit. */ | |
c3e2b812 | 423 | HANDLE exit_select; |
c3e2b812 | 424 | |
4577549b | 425 | /* The handle for the select thread. */ |
c3e2b812 | 426 | HANDLE thread; |
4577549b DJ |
427 | /* The state of the select thread. This field is only accessed in |
428 | the main program, never by the select thread itself. */ | |
429 | enum select_thread_state thread_state; | |
0ea3f30e DJ |
430 | }; |
431 | ||
4577549b DJ |
432 | /* Called by a select thread to enter the stopped state. This |
433 | function does not return until the thread has re-entered the | |
434 | started state. */ | |
435 | static void | |
436 | select_thread_wait (struct ser_console_state *state) | |
437 | { | |
438 | HANDLE wait_events[2]; | |
439 | ||
440 | /* There are two things that can wake us up: a request that we enter | |
441 | the started state, or that we exit this thread. */ | |
442 | wait_events[0] = state->start_select; | |
443 | wait_events[1] = state->exit_select; | |
444 | if (WaitForMultipleObjects (2, wait_events, FALSE, INFINITE) | |
445 | != WAIT_OBJECT_0) | |
446 | /* Either the EXIT_SELECT event was signaled (requesting that the | |
447 | thread exit) or an error has occurred. In either case, we exit | |
448 | the thread. */ | |
449 | ExitThread (0); | |
450 | ||
451 | /* We are now in the started state. */ | |
452 | SetEvent (state->have_started); | |
453 | } | |
454 | ||
455 | typedef DWORD WINAPI (*thread_fn_type)(void *); | |
456 | ||
457 | /* Create a new select thread for SCB executing THREAD_FN. The STATE | |
458 | will be filled in by this function before return. */ | |
a95babbf | 459 | static void |
4577549b DJ |
460 | create_select_thread (thread_fn_type thread_fn, |
461 | struct serial *scb, | |
462 | struct ser_console_state *state) | |
463 | { | |
464 | DWORD threadId; | |
465 | ||
466 | /* Create all of the events. These are all auto-reset events. */ | |
467 | state->read_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
468 | state->except_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
469 | state->have_started = CreateEvent (NULL, FALSE, FALSE, NULL); | |
470 | state->have_stopped = CreateEvent (NULL, FALSE, FALSE, NULL); | |
471 | state->start_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
472 | state->stop_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
473 | state->exit_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
474 | ||
475 | state->thread = CreateThread (NULL, 0, thread_fn, scb, 0, &threadId); | |
476 | /* The thread begins in the stopped state. */ | |
477 | state->thread_state = STS_STOPPED; | |
478 | } | |
479 | ||
480 | /* Destroy the select thread indicated by STATE. */ | |
481 | static void | |
482 | destroy_select_thread (struct ser_console_state *state) | |
483 | { | |
484 | /* Ask the thread to exit. */ | |
485 | SetEvent (state->exit_select); | |
486 | /* Wait until it does. */ | |
487 | WaitForSingleObject (state->thread, INFINITE); | |
488 | ||
489 | /* Destroy the events. */ | |
490 | CloseHandle (state->read_event); | |
491 | CloseHandle (state->except_event); | |
492 | CloseHandle (state->have_started); | |
493 | CloseHandle (state->have_stopped); | |
494 | CloseHandle (state->start_select); | |
495 | CloseHandle (state->stop_select); | |
496 | CloseHandle (state->exit_select); | |
497 | } | |
498 | ||
499 | /* Called by gdb_select to start the select thread indicated by STATE. | |
500 | This function does not return until the thread has started. */ | |
501 | static void | |
502 | start_select_thread (struct ser_console_state *state) | |
503 | { | |
504 | /* Ask the thread to start. */ | |
505 | SetEvent (state->start_select); | |
506 | /* Wait until it does. */ | |
507 | WaitForSingleObject (state->have_started, INFINITE); | |
508 | /* The thread is now started. */ | |
509 | state->thread_state = STS_STARTED; | |
510 | } | |
511 | ||
512 | /* Called by gdb_select to stop the select thread indicated by STATE. | |
513 | This function does not return until the thread has stopped. */ | |
514 | static void | |
515 | stop_select_thread (struct ser_console_state *state) | |
516 | { | |
517 | /* If the thread is already in the stopped state, we have nothing to | |
518 | do. Some of the wait_handle functions avoid calling | |
519 | start_select_thread if they notice activity on the relevant file | |
520 | descriptors. The wait_handle_done functions still call | |
521 | stop_select_thread -- but it is already stopped. */ | |
522 | if (state->thread_state != STS_STARTED) | |
523 | return; | |
524 | /* Ask the thread to stop. */ | |
525 | SetEvent (state->stop_select); | |
526 | /* Wait until it does. */ | |
527 | WaitForSingleObject (state->have_stopped, INFINITE); | |
528 | /* The thread is now stopped. */ | |
529 | state->thread_state = STS_STOPPED; | |
530 | } | |
531 | ||
0ea3f30e DJ |
532 | static DWORD WINAPI |
533 | console_select_thread (void *arg) | |
534 | { | |
535 | struct serial *scb = arg; | |
c3e2b812 DJ |
536 | struct ser_console_state *state; |
537 | int event_index; | |
0ea3f30e DJ |
538 | HANDLE h; |
539 | ||
c3e2b812 DJ |
540 | state = scb->state; |
541 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
542 | |
543 | while (1) | |
544 | { | |
545 | HANDLE wait_events[2]; | |
546 | INPUT_RECORD record; | |
547 | DWORD n_records; | |
548 | ||
4577549b | 549 | select_thread_wait (state); |
c3e2b812 | 550 | |
4577549b DJ |
551 | while (1) |
552 | { | |
553 | wait_events[0] = state->stop_select; | |
554 | wait_events[1] = h; | |
0ea3f30e | 555 | |
3e43a32a MS |
556 | event_index = WaitForMultipleObjects (2, wait_events, |
557 | FALSE, INFINITE); | |
0ea3f30e | 558 | |
4577549b DJ |
559 | if (event_index == WAIT_OBJECT_0 |
560 | || WaitForSingleObject (state->stop_select, 0) == WAIT_OBJECT_0) | |
561 | break; | |
0ea3f30e | 562 | |
4577549b DJ |
563 | if (event_index != WAIT_OBJECT_0 + 1) |
564 | { | |
565 | /* Wait must have failed; assume an error has occured, e.g. | |
566 | the handle has been closed. */ | |
567 | SetEvent (state->except_event); | |
568 | break; | |
569 | } | |
0ea3f30e | 570 | |
4577549b DJ |
571 | /* We've got a pending event on the console. See if it's |
572 | of interest. */ | |
573 | if (!PeekConsoleInput (h, &record, 1, &n_records) || n_records != 1) | |
574 | { | |
575 | /* Something went wrong. Maybe the console is gone. */ | |
576 | SetEvent (state->except_event); | |
577 | break; | |
578 | } | |
0ea3f30e | 579 | |
4577549b | 580 | if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) |
c3e2b812 | 581 | { |
4577549b DJ |
582 | WORD keycode = record.Event.KeyEvent.wVirtualKeyCode; |
583 | ||
584 | /* Ignore events containing only control keys. We must | |
585 | recognize "enhanced" keys which we are interested in | |
586 | reading via getch, if they do not map to ASCII. But we | |
587 | do not want to report input available for e.g. the | |
588 | control key alone. */ | |
589 | ||
590 | if (record.Event.KeyEvent.uChar.AsciiChar != 0 | |
591 | || keycode == VK_PRIOR | |
592 | || keycode == VK_NEXT | |
593 | || keycode == VK_END | |
594 | || keycode == VK_HOME | |
595 | || keycode == VK_LEFT | |
596 | || keycode == VK_UP | |
597 | || keycode == VK_RIGHT | |
598 | || keycode == VK_DOWN | |
599 | || keycode == VK_INSERT | |
600 | || keycode == VK_DELETE) | |
601 | { | |
602 | /* This is really a keypress. */ | |
603 | SetEvent (state->read_event); | |
604 | break; | |
605 | } | |
c3e2b812 | 606 | } |
4577549b DJ |
607 | |
608 | /* Otherwise discard it and wait again. */ | |
609 | ReadConsoleInput (h, &record, 1, &n_records); | |
0ea3f30e DJ |
610 | } |
611 | ||
4577549b | 612 | SetEvent(state->have_stopped); |
0ea3f30e | 613 | } |
a32d7317 | 614 | return 0; |
0ea3f30e DJ |
615 | } |
616 | ||
617 | static int | |
618 | fd_is_pipe (int fd) | |
619 | { | |
620 | if (PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, NULL, NULL)) | |
621 | return 1; | |
622 | else | |
623 | return 0; | |
624 | } | |
625 | ||
7e71daaa JG |
626 | static int |
627 | fd_is_file (int fd) | |
628 | { | |
629 | if (GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_DISK) | |
630 | return 1; | |
631 | else | |
632 | return 0; | |
633 | } | |
634 | ||
0ea3f30e DJ |
635 | static DWORD WINAPI |
636 | pipe_select_thread (void *arg) | |
637 | { | |
638 | struct serial *scb = arg; | |
c3e2b812 DJ |
639 | struct ser_console_state *state; |
640 | int event_index; | |
0ea3f30e DJ |
641 | HANDLE h; |
642 | ||
c3e2b812 DJ |
643 | state = scb->state; |
644 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
645 | |
646 | while (1) | |
647 | { | |
0ea3f30e DJ |
648 | DWORD n_avail; |
649 | ||
4577549b | 650 | select_thread_wait (state); |
c3e2b812 | 651 | |
4577549b DJ |
652 | /* Wait for something to happen on the pipe. */ |
653 | while (1) | |
0ea3f30e | 654 | { |
4577549b DJ |
655 | if (!PeekNamedPipe (h, NULL, 0, NULL, &n_avail, NULL)) |
656 | { | |
657 | SetEvent (state->except_event); | |
658 | break; | |
659 | } | |
0ea3f30e | 660 | |
4577549b DJ |
661 | if (n_avail > 0) |
662 | { | |
663 | SetEvent (state->read_event); | |
664 | break; | |
665 | } | |
0ea3f30e | 666 | |
4577549b DJ |
667 | /* Delay 10ms before checking again, but allow the stop |
668 | event to wake us. */ | |
669 | if (WaitForSingleObject (state->stop_select, 10) == WAIT_OBJECT_0) | |
670 | break; | |
671 | } | |
0ea3f30e | 672 | |
4577549b | 673 | SetEvent (state->have_stopped); |
0ea3f30e | 674 | } |
a32d7317 | 675 | return 0; |
0ea3f30e DJ |
676 | } |
677 | ||
7e71daaa JG |
678 | static DWORD WINAPI |
679 | file_select_thread (void *arg) | |
680 | { | |
681 | struct serial *scb = arg; | |
682 | struct ser_console_state *state; | |
683 | int event_index; | |
684 | HANDLE h; | |
685 | ||
686 | state = scb->state; | |
687 | h = (HANDLE) _get_osfhandle (scb->fd); | |
688 | ||
689 | while (1) | |
690 | { | |
4577549b | 691 | select_thread_wait (state); |
7e71daaa | 692 | |
3e43a32a MS |
693 | if (SetFilePointer (h, 0, NULL, FILE_CURRENT) |
694 | == INVALID_SET_FILE_POINTER) | |
4577549b DJ |
695 | SetEvent (state->except_event); |
696 | else | |
697 | SetEvent (state->read_event); | |
7e71daaa | 698 | |
4577549b | 699 | SetEvent (state->have_stopped); |
7e71daaa | 700 | } |
a32d7317 | 701 | return 0; |
7e71daaa JG |
702 | } |
703 | ||
0ea3f30e DJ |
704 | static void |
705 | ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
706 | { | |
707 | struct ser_console_state *state = scb->state; | |
708 | ||
709 | if (state == NULL) | |
710 | { | |
4577549b | 711 | thread_fn_type thread_fn; |
0ea3f30e DJ |
712 | int is_tty; |
713 | ||
714 | is_tty = isatty (scb->fd); | |
7e71daaa | 715 | if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd)) |
0ea3f30e DJ |
716 | { |
717 | *read = NULL; | |
718 | *except = NULL; | |
719 | return; | |
720 | } | |
721 | ||
8d749320 | 722 | state = XCNEW (struct ser_console_state); |
0ea3f30e DJ |
723 | scb->state = state; |
724 | ||
0ea3f30e | 725 | if (is_tty) |
4577549b | 726 | thread_fn = console_select_thread; |
7e71daaa | 727 | else if (fd_is_pipe (scb->fd)) |
4577549b | 728 | thread_fn = pipe_select_thread; |
7e71daaa | 729 | else |
4577549b DJ |
730 | thread_fn = file_select_thread; |
731 | ||
732 | create_select_thread (thread_fn, scb, state); | |
0ea3f30e DJ |
733 | } |
734 | ||
c3e2b812 DJ |
735 | *read = state->read_event; |
736 | *except = state->except_event; | |
737 | ||
738 | /* Start from a blank state. */ | |
0ea3f30e DJ |
739 | ResetEvent (state->read_event); |
740 | ResetEvent (state->except_event); | |
c3e2b812 DJ |
741 | ResetEvent (state->stop_select); |
742 | ||
743 | /* First check for a key already in the buffer. If there is one, | |
744 | we don't need a thread. This also catches the second key of | |
745 | multi-character returns from getch, for instance for arrow | |
746 | keys. The second half is in a C library internal buffer, | |
747 | and PeekConsoleInput will not find it. */ | |
748 | if (_kbhit ()) | |
749 | { | |
750 | SetEvent (state->read_event); | |
751 | return; | |
752 | } | |
0ea3f30e | 753 | |
c3e2b812 | 754 | /* Otherwise, start the select thread. */ |
4577549b | 755 | start_select_thread (state); |
c3e2b812 | 756 | } |
0ea3f30e | 757 | |
c3e2b812 DJ |
758 | static void |
759 | ser_console_done_wait_handle (struct serial *scb) | |
760 | { | |
761 | struct ser_console_state *state = scb->state; | |
762 | ||
763 | if (state == NULL) | |
764 | return; | |
765 | ||
4577549b | 766 | stop_select_thread (state); |
0ea3f30e DJ |
767 | } |
768 | ||
769 | static void | |
770 | ser_console_close (struct serial *scb) | |
771 | { | |
772 | struct ser_console_state *state = scb->state; | |
773 | ||
774 | if (scb->state) | |
775 | { | |
4577549b | 776 | destroy_select_thread (state); |
0ea3f30e DJ |
777 | xfree (scb->state); |
778 | } | |
779 | } | |
780 | ||
781 | struct ser_console_ttystate | |
782 | { | |
783 | int is_a_tty; | |
784 | }; | |
785 | ||
786 | static serial_ttystate | |
787 | ser_console_get_tty_state (struct serial *scb) | |
788 | { | |
789 | if (isatty (scb->fd)) | |
790 | { | |
791 | struct ser_console_ttystate *state; | |
433759f7 | 792 | |
8d749320 | 793 | state = XNEW (struct ser_console_ttystate); |
0ea3f30e DJ |
794 | state->is_a_tty = 1; |
795 | return state; | |
796 | } | |
797 | else | |
798 | return NULL; | |
799 | } | |
800 | ||
5f1fb6dc JB |
801 | struct pipe_state |
802 | { | |
803 | /* Since we use the pipe_select_thread for our select emulation, | |
804 | we need to place the state structure it requires at the front | |
805 | of our state. */ | |
806 | struct ser_console_state wait; | |
807 | ||
808 | /* The pex obj for our (one-stage) pipeline. */ | |
809 | struct pex_obj *pex; | |
810 | ||
811 | /* Streams for the pipeline's input and output. */ | |
812 | FILE *input, *output; | |
813 | }; | |
814 | ||
815 | static struct pipe_state * | |
816 | make_pipe_state (void) | |
817 | { | |
8d749320 | 818 | struct pipe_state *ps = XCNEW (struct pipe_state); |
5f1fb6dc | 819 | |
5f1fb6dc JB |
820 | ps->wait.read_event = INVALID_HANDLE_VALUE; |
821 | ps->wait.except_event = INVALID_HANDLE_VALUE; | |
822 | ps->wait.start_select = INVALID_HANDLE_VALUE; | |
823 | ps->wait.stop_select = INVALID_HANDLE_VALUE; | |
824 | ||
825 | return ps; | |
826 | } | |
827 | ||
828 | static void | |
829 | free_pipe_state (struct pipe_state *ps) | |
830 | { | |
831 | int saved_errno = errno; | |
832 | ||
833 | if (ps->wait.read_event != INVALID_HANDLE_VALUE) | |
4577549b | 834 | destroy_select_thread (&ps->wait); |
5f1fb6dc JB |
835 | |
836 | /* Close the pipe to the child. We must close the pipe before | |
837 | calling pex_free because pex_free will wait for the child to exit | |
838 | and the child will not exit until the pipe is closed. */ | |
839 | if (ps->input) | |
840 | fclose (ps->input); | |
841 | if (ps->pex) | |
58f07bae PA |
842 | { |
843 | pex_free (ps->pex); | |
844 | /* pex_free closes ps->output. */ | |
845 | } | |
846 | else if (ps->output) | |
847 | fclose (ps->output); | |
5f1fb6dc JB |
848 | |
849 | xfree (ps); | |
850 | ||
851 | errno = saved_errno; | |
852 | } | |
853 | ||
854 | static void | |
855 | cleanup_pipe_state (void *untyped) | |
856 | { | |
857 | struct pipe_state *ps = untyped; | |
858 | ||
859 | free_pipe_state (ps); | |
860 | } | |
861 | ||
862 | static int | |
863 | pipe_windows_open (struct serial *scb, const char *name) | |
864 | { | |
ef7723eb | 865 | struct pipe_state *ps; |
65cc4390 | 866 | FILE *pex_stderr; |
efdb2a86 PA |
867 | char **argv; |
868 | struct cleanup *back_to; | |
ef7723eb | 869 | |
d1a41061 PP |
870 | if (name == NULL) |
871 | error_no_arg (_("child command")); | |
872 | ||
efdb2a86 PA |
873 | argv = gdb_buildargv (name); |
874 | back_to = make_cleanup_freeargv (argv); | |
d1a41061 | 875 | |
5f1fb6dc | 876 | if (! argv[0] || argv[0][0] == '\0') |
a73c6dcd | 877 | error (_("missing child command")); |
5f1fb6dc | 878 | |
ef7723eb | 879 | ps = make_pipe_state (); |
5f1fb6dc JB |
880 | make_cleanup (cleanup_pipe_state, ps); |
881 | ||
882 | ps->pex = pex_init (PEX_USE_PIPES, "target remote pipe", NULL); | |
883 | if (! ps->pex) | |
884 | goto fail; | |
885 | ps->input = pex_input_pipe (ps->pex, 1); | |
886 | if (! ps->input) | |
887 | goto fail; | |
888 | ||
889 | { | |
890 | int err; | |
891 | const char *err_msg | |
65cc4390 VP |
892 | = pex_run (ps->pex, PEX_SEARCH | PEX_BINARY_INPUT | PEX_BINARY_OUTPUT |
893 | | PEX_STDERR_TO_PIPE, | |
5f1fb6dc JB |
894 | argv[0], argv, NULL, NULL, |
895 | &err); | |
896 | ||
897 | if (err_msg) | |
898 | { | |
899 | /* Our caller expects us to return -1, but all they'll do with | |
900 | it generally is print the message based on errno. We have | |
901 | all the same information here, plus err_msg provided by | |
902 | pex_run, so we just raise the error here. */ | |
903 | if (err) | |
a73c6dcd | 904 | error (_("error starting child process '%s': %s: %s"), |
5f1fb6dc JB |
905 | name, err_msg, safe_strerror (err)); |
906 | else | |
a73c6dcd | 907 | error (_("error starting child process '%s': %s"), |
5f1fb6dc JB |
908 | name, err_msg); |
909 | } | |
910 | } | |
911 | ||
912 | ps->output = pex_read_output (ps->pex, 1); | |
913 | if (! ps->output) | |
914 | goto fail; | |
5f1fb6dc | 915 | scb->fd = fileno (ps->output); |
65cc4390 VP |
916 | |
917 | pex_stderr = pex_read_err (ps->pex, 1); | |
918 | if (! pex_stderr) | |
919 | goto fail; | |
920 | scb->error_fd = fileno (pex_stderr); | |
921 | ||
5f1fb6dc JB |
922 | scb->state = (void *) ps; |
923 | ||
924 | discard_cleanups (back_to); | |
925 | return 0; | |
926 | ||
927 | fail: | |
928 | do_cleanups (back_to); | |
929 | return -1; | |
930 | } | |
931 | ||
58f07bae PA |
932 | static int |
933 | pipe_windows_fdopen (struct serial *scb, int fd) | |
934 | { | |
935 | struct pipe_state *ps; | |
936 | ||
937 | ps = make_pipe_state (); | |
938 | ||
939 | ps->input = fdopen (fd, "r+"); | |
940 | if (! ps->input) | |
941 | goto fail; | |
942 | ||
943 | ps->output = fdopen (fd, "r+"); | |
944 | if (! ps->output) | |
945 | goto fail; | |
946 | ||
947 | scb->fd = fd; | |
948 | scb->state = (void *) ps; | |
949 | ||
950 | return 0; | |
951 | ||
952 | fail: | |
953 | free_pipe_state (ps); | |
954 | return -1; | |
955 | } | |
5f1fb6dc JB |
956 | |
957 | static void | |
958 | pipe_windows_close (struct serial *scb) | |
959 | { | |
960 | struct pipe_state *ps = scb->state; | |
961 | ||
962 | /* In theory, we should try to kill the subprocess here, but the pex | |
963 | interface doesn't give us enough information to do that. Usually | |
964 | closing the input pipe will get the message across. */ | |
965 | ||
966 | free_pipe_state (ps); | |
967 | } | |
968 | ||
969 | ||
970 | static int | |
971 | pipe_windows_read (struct serial *scb, size_t count) | |
972 | { | |
4998c1df | 973 | HANDLE pipeline_out = (HANDLE) _get_osfhandle (scb->fd); |
ef7723eb VP |
974 | DWORD available; |
975 | DWORD bytes_read; | |
976 | ||
5f1fb6dc JB |
977 | if (pipeline_out == INVALID_HANDLE_VALUE) |
978 | return -1; | |
979 | ||
5f1fb6dc JB |
980 | if (! PeekNamedPipe (pipeline_out, NULL, 0, NULL, &available, NULL)) |
981 | return -1; | |
982 | ||
983 | if (count > available) | |
984 | count = available; | |
985 | ||
5f1fb6dc JB |
986 | if (! ReadFile (pipeline_out, scb->buf, count, &bytes_read, NULL)) |
987 | return -1; | |
988 | ||
989 | return bytes_read; | |
990 | } | |
991 | ||
992 | ||
993 | static int | |
994 | pipe_windows_write (struct serial *scb, const void *buf, size_t count) | |
995 | { | |
996 | struct pipe_state *ps = scb->state; | |
ef7723eb VP |
997 | HANDLE pipeline_in; |
998 | DWORD written; | |
999 | ||
5f1fb6dc JB |
1000 | int pipeline_in_fd = fileno (ps->input); |
1001 | if (pipeline_in_fd < 0) | |
1002 | return -1; | |
1003 | ||
ef7723eb | 1004 | pipeline_in = (HANDLE) _get_osfhandle (pipeline_in_fd); |
5f1fb6dc JB |
1005 | if (pipeline_in == INVALID_HANDLE_VALUE) |
1006 | return -1; | |
1007 | ||
5f1fb6dc JB |
1008 | if (! WriteFile (pipeline_in, buf, count, &written, NULL)) |
1009 | return -1; | |
1010 | ||
1011 | return written; | |
1012 | } | |
1013 | ||
1014 | ||
1015 | static void | |
1016 | pipe_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1017 | { | |
1018 | struct pipe_state *ps = scb->state; | |
1019 | ||
1020 | /* Have we allocated our events yet? */ | |
1021 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
4577549b DJ |
1022 | /* Start the thread. */ |
1023 | create_select_thread (pipe_select_thread, scb, &ps->wait); | |
5f1fb6dc | 1024 | |
774a49c0 DJ |
1025 | *read = ps->wait.read_event; |
1026 | *except = ps->wait.except_event; | |
1027 | ||
1028 | /* Start from a blank state. */ | |
5f1fb6dc JB |
1029 | ResetEvent (ps->wait.read_event); |
1030 | ResetEvent (ps->wait.except_event); | |
774a49c0 | 1031 | ResetEvent (ps->wait.stop_select); |
5f1fb6dc | 1032 | |
4577549b | 1033 | start_select_thread (&ps->wait); |
5f1fb6dc JB |
1034 | } |
1035 | ||
774a49c0 DJ |
1036 | static void |
1037 | pipe_done_wait_handle (struct serial *scb) | |
1038 | { | |
1039 | struct pipe_state *ps = scb->state; | |
1040 | ||
1041 | /* Have we allocated our events yet? */ | |
1042 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
1043 | return; | |
1044 | ||
4577549b | 1045 | stop_select_thread (&ps->wait); |
774a49c0 | 1046 | } |
5f1fb6dc | 1047 | |
65cc4390 VP |
1048 | static int |
1049 | pipe_avail (struct serial *scb, int fd) | |
1050 | { | |
1051 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
1052 | DWORD numBytes; | |
1053 | BOOL r = PeekNamedPipe (h, NULL, 0, NULL, &numBytes, NULL); | |
433759f7 | 1054 | |
65cc4390 VP |
1055 | if (r == FALSE) |
1056 | numBytes = 0; | |
1057 | return numBytes; | |
1058 | } | |
1059 | ||
58f07bae PA |
1060 | int |
1061 | gdb_pipe (int pdes[2]) | |
1062 | { | |
1063 | if (_pipe (pdes, 512, _O_BINARY | _O_NOINHERIT) == -1) | |
1064 | return -1; | |
1065 | return 0; | |
1066 | } | |
1067 | ||
0ea3f30e DJ |
1068 | struct net_windows_state |
1069 | { | |
4577549b DJ |
1070 | struct ser_console_state base; |
1071 | ||
0ea3f30e DJ |
1072 | HANDLE sock_event; |
1073 | }; | |
1074 | ||
364fe1f7 PA |
1075 | /* Check whether the socket has any pending data to be read. If so, |
1076 | set the select thread's read event. On error, set the select | |
1077 | thread's except event. If any event was set, return true, | |
1078 | otherwise return false. */ | |
1079 | ||
1080 | static int | |
1081 | net_windows_socket_check_pending (struct serial *scb) | |
1082 | { | |
1083 | struct net_windows_state *state = scb->state; | |
1084 | unsigned long available; | |
1085 | ||
1086 | if (ioctlsocket (scb->fd, FIONREAD, &available) != 0) | |
1087 | { | |
1088 | /* The socket closed, or some other error. */ | |
1089 | SetEvent (state->base.except_event); | |
1090 | return 1; | |
1091 | } | |
1092 | else if (available > 0) | |
1093 | { | |
1094 | SetEvent (state->base.read_event); | |
1095 | return 1; | |
1096 | } | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
0ea3f30e DJ |
1101 | static DWORD WINAPI |
1102 | net_windows_select_thread (void *arg) | |
1103 | { | |
1104 | struct serial *scb = arg; | |
4577549b | 1105 | struct net_windows_state *state; |
c3e2b812 | 1106 | int event_index; |
0ea3f30e | 1107 | |
c3e2b812 | 1108 | state = scb->state; |
0ea3f30e DJ |
1109 | |
1110 | while (1) | |
1111 | { | |
1112 | HANDLE wait_events[2]; | |
1113 | WSANETWORKEVENTS events; | |
1114 | ||
4577549b | 1115 | select_thread_wait (&state->base); |
c3e2b812 | 1116 | |
4577549b | 1117 | wait_events[0] = state->base.stop_select; |
0ea3f30e DJ |
1118 | wait_events[1] = state->sock_event; |
1119 | ||
364fe1f7 PA |
1120 | /* Wait for something to happen on the socket. */ |
1121 | while (1) | |
0ea3f30e | 1122 | { |
364fe1f7 PA |
1123 | event_index = WaitForMultipleObjects (2, wait_events, FALSE, INFINITE); |
1124 | ||
1125 | if (event_index == WAIT_OBJECT_0 | |
1126 | || WaitForSingleObject (state->base.stop_select, 0) == WAIT_OBJECT_0) | |
1127 | { | |
1128 | /* We have been requested to stop. */ | |
1129 | break; | |
1130 | } | |
1131 | ||
1132 | if (event_index != WAIT_OBJECT_0 + 1) | |
1133 | { | |
1134 | /* Some error has occured. Assume that this is an error | |
1135 | condition. */ | |
1136 | SetEvent (state->base.except_event); | |
1137 | break; | |
1138 | } | |
1139 | ||
4577549b DJ |
1140 | /* Enumerate the internal network events, and reset the |
1141 | object that signalled us to catch the next event. */ | |
364fe1f7 PA |
1142 | if (WSAEnumNetworkEvents (scb->fd, state->sock_event, &events) != 0) |
1143 | { | |
1144 | /* Something went wrong. Maybe the socket is gone. */ | |
1145 | SetEvent (state->base.except_event); | |
1146 | break; | |
1147 | } | |
1148 | ||
4577549b | 1149 | if (events.lNetworkEvents & FD_READ) |
364fe1f7 PA |
1150 | { |
1151 | if (net_windows_socket_check_pending (scb)) | |
1152 | break; | |
1153 | ||
1154 | /* Spurious wakeup. That is, the socket's event was | |
1155 | signalled before we last called recv. */ | |
1156 | } | |
1157 | ||
4577549b | 1158 | if (events.lNetworkEvents & FD_CLOSE) |
364fe1f7 PA |
1159 | { |
1160 | SetEvent (state->base.except_event); | |
1161 | break; | |
1162 | } | |
0ea3f30e DJ |
1163 | } |
1164 | ||
4577549b | 1165 | SetEvent (state->base.have_stopped); |
0ea3f30e | 1166 | } |
364fe1f7 | 1167 | return 0; |
0ea3f30e DJ |
1168 | } |
1169 | ||
1170 | static void | |
1171 | net_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1172 | { | |
1173 | struct net_windows_state *state = scb->state; | |
1174 | ||
c3e2b812 | 1175 | /* Start from a clean slate. */ |
4577549b DJ |
1176 | ResetEvent (state->base.read_event); |
1177 | ResetEvent (state->base.except_event); | |
1178 | ResetEvent (state->base.stop_select); | |
0ea3f30e | 1179 | |
4577549b DJ |
1180 | *read = state->base.read_event; |
1181 | *except = state->base.except_event; | |
c3e2b812 | 1182 | |
364fe1f7 PA |
1183 | /* Check any pending events. Otherwise, start the select |
1184 | thread. */ | |
1185 | if (!net_windows_socket_check_pending (scb)) | |
1186 | start_select_thread (&state->base); | |
c3e2b812 DJ |
1187 | } |
1188 | ||
1189 | static void | |
1190 | net_windows_done_wait_handle (struct serial *scb) | |
1191 | { | |
1192 | struct net_windows_state *state = scb->state; | |
1193 | ||
4577549b | 1194 | stop_select_thread (&state->base); |
0ea3f30e DJ |
1195 | } |
1196 | ||
1197 | static int | |
1198 | net_windows_open (struct serial *scb, const char *name) | |
1199 | { | |
1200 | struct net_windows_state *state; | |
1201 | int ret; | |
1202 | DWORD threadId; | |
1203 | ||
1204 | ret = net_open (scb, name); | |
1205 | if (ret != 0) | |
1206 | return ret; | |
1207 | ||
8d749320 | 1208 | state = XCNEW (struct net_windows_state); |
0ea3f30e DJ |
1209 | scb->state = state; |
1210 | ||
0ea3f30e DJ |
1211 | /* Associate an event with the socket. */ |
1212 | state->sock_event = CreateEvent (0, TRUE, FALSE, 0); | |
1213 | WSAEventSelect (scb->fd, state->sock_event, FD_READ | FD_CLOSE); | |
1214 | ||
4577549b DJ |
1215 | /* Start the thread. */ |
1216 | create_select_thread (net_windows_select_thread, scb, &state->base); | |
0ea3f30e DJ |
1217 | |
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | ||
1222 | static void | |
1223 | net_windows_close (struct serial *scb) | |
1224 | { | |
1225 | struct net_windows_state *state = scb->state; | |
1226 | ||
4577549b | 1227 | destroy_select_thread (&state->base); |
0ea3f30e DJ |
1228 | CloseHandle (state->sock_event); |
1229 | ||
1230 | xfree (scb->state); | |
1231 | ||
1232 | net_close (scb); | |
1233 | } | |
1234 | ||
12e8c7d7 TT |
1235 | /* The serial port driver. */ |
1236 | ||
1237 | static const struct serial_ops hardwire_ops = | |
1238 | { | |
1239 | "hardwire", | |
1240 | ser_windows_open, | |
1241 | ser_windows_close, | |
1242 | NULL, | |
1243 | ser_base_readchar, | |
1244 | ser_base_write, | |
1245 | ser_windows_flush_output, | |
1246 | ser_windows_flush_input, | |
1247 | ser_windows_send_break, | |
1248 | ser_windows_raw, | |
1249 | /* These are only used for stdin; we do not need them for serial | |
1250 | ports, so supply the standard dummies. */ | |
1251 | ser_base_get_tty_state, | |
1252 | ser_base_copy_tty_state, | |
1253 | ser_base_set_tty_state, | |
1254 | ser_base_print_tty_state, | |
1255 | ser_base_noflush_set_tty_state, | |
1256 | ser_windows_setbaudrate, | |
1257 | ser_windows_setstopbits, | |
236af5e3 | 1258 | ser_windows_setparity, |
12e8c7d7 TT |
1259 | ser_windows_drain_output, |
1260 | ser_base_async, | |
1261 | ser_windows_read_prim, | |
1262 | ser_windows_write_prim, | |
1263 | NULL, | |
1264 | ser_windows_wait_handle | |
1265 | }; | |
1266 | ||
1267 | /* The dummy serial driver used for terminals. We only provide the | |
1268 | TTY-related methods. */ | |
1269 | ||
1270 | static const struct serial_ops tty_ops = | |
1271 | { | |
1272 | "terminal", | |
1273 | NULL, | |
1274 | ser_console_close, | |
1275 | NULL, | |
1276 | NULL, | |
1277 | NULL, | |
1278 | NULL, | |
1279 | NULL, | |
1280 | NULL, | |
1281 | NULL, | |
1282 | ser_console_get_tty_state, | |
1283 | ser_base_copy_tty_state, | |
1284 | ser_base_set_tty_state, | |
1285 | ser_base_print_tty_state, | |
1286 | ser_base_noflush_set_tty_state, | |
1287 | NULL, | |
1288 | NULL, | |
236af5e3 | 1289 | NULL, |
12e8c7d7 TT |
1290 | ser_base_drain_output, |
1291 | NULL, | |
1292 | NULL, | |
1293 | NULL, | |
1294 | NULL, | |
1295 | ser_console_wait_handle, | |
1296 | ser_console_done_wait_handle | |
1297 | }; | |
1298 | ||
1299 | /* The pipe interface. */ | |
1300 | ||
1301 | static const struct serial_ops pipe_ops = | |
1302 | { | |
1303 | "pipe", | |
1304 | pipe_windows_open, | |
1305 | pipe_windows_close, | |
1306 | pipe_windows_fdopen, | |
1307 | ser_base_readchar, | |
1308 | ser_base_write, | |
1309 | ser_base_flush_output, | |
1310 | ser_base_flush_input, | |
1311 | ser_base_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, | |
236af5e3 | 1320 | ser_base_setparity, |
12e8c7d7 TT |
1321 | ser_base_drain_output, |
1322 | ser_base_async, | |
1323 | pipe_windows_read, | |
1324 | pipe_windows_write, | |
1325 | pipe_avail, | |
1326 | pipe_wait_handle, | |
1327 | pipe_done_wait_handle | |
1328 | }; | |
1329 | ||
1330 | /* The TCP/UDP socket driver. */ | |
1331 | ||
1332 | static const struct serial_ops tcp_ops = | |
1333 | { | |
1334 | "tcp", | |
1335 | net_windows_open, | |
1336 | net_windows_close, | |
1337 | NULL, | |
1338 | ser_base_readchar, | |
1339 | ser_base_write, | |
1340 | ser_base_flush_output, | |
1341 | ser_base_flush_input, | |
1342 | ser_tcp_send_break, | |
1343 | ser_base_raw, | |
1344 | ser_base_get_tty_state, | |
1345 | ser_base_copy_tty_state, | |
1346 | ser_base_set_tty_state, | |
1347 | ser_base_print_tty_state, | |
1348 | ser_base_noflush_set_tty_state, | |
1349 | ser_base_setbaudrate, | |
1350 | ser_base_setstopbits, | |
236af5e3 | 1351 | ser_base_setparity, |
12e8c7d7 TT |
1352 | ser_base_drain_output, |
1353 | ser_base_async, | |
1354 | net_read_prim, | |
1355 | net_write_prim, | |
1356 | NULL, | |
1357 | net_windows_wait_handle, | |
1358 | net_windows_done_wait_handle | |
1359 | }; | |
1360 | ||
0ea3f30e DJ |
1361 | void |
1362 | _initialize_ser_windows (void) | |
1363 | { | |
1364 | WSADATA wsa_data; | |
1365 | struct serial_ops *ops; | |
1366 | ||
4af53f97 PM |
1367 | HMODULE hm = NULL; |
1368 | ||
1369 | /* First find out if kernel32 exports CancelIo function. */ | |
1370 | hm = LoadLibrary ("kernel32.dll"); | |
1371 | if (hm) | |
1372 | { | |
1373 | CancelIo = (void *) GetProcAddress (hm, "CancelIo"); | |
1374 | FreeLibrary (hm); | |
1375 | } | |
1376 | else | |
1377 | CancelIo = NULL; | |
0ea3f30e | 1378 | |
12e8c7d7 TT |
1379 | serial_add_interface (&hardwire_ops); |
1380 | serial_add_interface (&tty_ops); | |
1381 | serial_add_interface (&pipe_ops); | |
5f1fb6dc | 1382 | |
0ea3f30e DJ |
1383 | /* If WinSock works, register the TCP/UDP socket driver. */ |
1384 | ||
1385 | if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0) | |
1386 | /* WinSock is unavailable. */ | |
1387 | return; | |
1388 | ||
12e8c7d7 | 1389 | serial_add_interface (&tcp_ops); |
0ea3f30e | 1390 | } |