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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 | ||
90 | state = xmalloc (sizeof (struct ser_windows_state)); | |
91 | memset (state, 0, sizeof (struct ser_windows_state)); | |
92 | scb->state = state; | |
93 | ||
94 | /* Create a manual reset event to watch the input buffer. */ | |
95 | state->ov.hEvent = CreateEvent (0, TRUE, FALSE, 0); | |
96 | ||
97 | /* Create a (currently unused) handle to record exceptions. */ | |
98 | state->except_event = CreateEvent (0, TRUE, FALSE, 0); | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
103 | /* Wait for the output to drain away, as opposed to flushing (discarding) | |
104 | it. */ | |
105 | ||
106 | static int | |
107 | ser_windows_drain_output (struct serial *scb) | |
108 | { | |
109 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
110 | ||
111 | return (FlushFileBuffers (h) != 0) ? 0 : -1; | |
112 | } | |
113 | ||
114 | static int | |
115 | ser_windows_flush_output (struct serial *scb) | |
116 | { | |
117 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
118 | ||
119 | return (PurgeComm (h, PURGE_TXCLEAR) != 0) ? 0 : -1; | |
120 | } | |
121 | ||
122 | static int | |
123 | ser_windows_flush_input (struct serial *scb) | |
124 | { | |
125 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
126 | ||
127 | return (PurgeComm (h, PURGE_RXCLEAR) != 0) ? 0 : -1; | |
128 | } | |
129 | ||
130 | static int | |
131 | ser_windows_send_break (struct serial *scb) | |
132 | { | |
133 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
134 | ||
135 | if (SetCommBreak (h) == 0) | |
136 | return -1; | |
137 | ||
138 | /* Delay for 250 milliseconds. */ | |
139 | Sleep (250); | |
140 | ||
141 | if (ClearCommBreak (h)) | |
142 | return -1; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static void | |
148 | ser_windows_raw (struct serial *scb) | |
149 | { | |
150 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
151 | DCB state; | |
152 | ||
153 | if (GetCommState (h, &state) == 0) | |
154 | return; | |
155 | ||
0ea3f30e DJ |
156 | state.fOutxCtsFlow = FALSE; |
157 | state.fOutxDsrFlow = FALSE; | |
158 | state.fDtrControl = DTR_CONTROL_ENABLE; | |
159 | state.fDsrSensitivity = FALSE; | |
160 | state.fOutX = FALSE; | |
161 | state.fInX = FALSE; | |
162 | state.fNull = FALSE; | |
163 | state.fAbortOnError = FALSE; | |
164 | state.ByteSize = 8; | |
0ea3f30e DJ |
165 | |
166 | scb->current_timeout = 0; | |
167 | ||
168 | if (SetCommState (h, &state) == 0) | |
b37520b6 | 169 | warning (_("SetCommState failed")); |
0ea3f30e DJ |
170 | } |
171 | ||
172 | static int | |
173 | ser_windows_setstopbits (struct serial *scb, int num) | |
174 | { | |
175 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
176 | DCB state; | |
177 | ||
178 | if (GetCommState (h, &state) == 0) | |
179 | return -1; | |
180 | ||
181 | switch (num) | |
182 | { | |
183 | case SERIAL_1_STOPBITS: | |
184 | state.StopBits = ONESTOPBIT; | |
185 | break; | |
186 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
187 | state.StopBits = ONE5STOPBITS; | |
188 | break; | |
189 | case SERIAL_2_STOPBITS: | |
190 | state.StopBits = TWOSTOPBITS; | |
191 | break; | |
192 | default: | |
193 | return 1; | |
194 | } | |
195 | ||
196 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
197 | } | |
198 | ||
236af5e3 YG |
199 | /* Implement the "setparity" serial_ops callback. */ |
200 | ||
201 | static int | |
202 | ser_windows_setparity (struct serial *scb, int parity) | |
203 | { | |
204 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
205 | DCB state; | |
206 | ||
207 | if (GetCommState (h, &state) == 0) | |
208 | return -1; | |
209 | ||
210 | switch (parity) | |
211 | { | |
212 | case GDBPARITY_NONE: | |
213 | state.Parity = NOPARITY; | |
214 | state.fParity = FALSE; | |
215 | break; | |
216 | case GDBPARITY_ODD: | |
217 | state.Parity = ODDPARITY; | |
218 | state.fParity = TRUE; | |
219 | break; | |
220 | case GDBPARITY_EVEN: | |
221 | state.Parity = EVENPARITY; | |
222 | state.fParity = TRUE; | |
223 | break; | |
224 | default: | |
225 | internal_warning (__FILE__, __LINE__, | |
8a4506c0 | 226 | "Incorrect parity value: %d", parity); |
236af5e3 YG |
227 | return -1; |
228 | } | |
229 | ||
230 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
231 | } | |
232 | ||
0ea3f30e DJ |
233 | static int |
234 | ser_windows_setbaudrate (struct serial *scb, int rate) | |
235 | { | |
236 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
237 | DCB state; | |
238 | ||
239 | if (GetCommState (h, &state) == 0) | |
240 | return -1; | |
241 | ||
242 | state.BaudRate = rate; | |
243 | ||
244 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
245 | } | |
246 | ||
247 | static void | |
248 | ser_windows_close (struct serial *scb) | |
249 | { | |
250 | struct ser_windows_state *state; | |
251 | ||
e25b2cfa PM |
252 | /* Stop any pending selects. On Windows 95 OS, CancelIo function does |
253 | not exist. In that case, it can be replaced by a call to CloseHandle, | |
254 | but this is not necessary here as we do close the Windows handle | |
255 | by calling close (scb->fd) below. */ | |
4af53f97 PM |
256 | if (CancelIo) |
257 | CancelIo ((HANDLE) _get_osfhandle (scb->fd)); | |
0ea3f30e DJ |
258 | state = scb->state; |
259 | CloseHandle (state->ov.hEvent); | |
260 | CloseHandle (state->except_event); | |
261 | ||
262 | if (scb->fd < 0) | |
263 | return; | |
264 | ||
265 | close (scb->fd); | |
266 | scb->fd = -1; | |
267 | ||
268 | xfree (scb->state); | |
269 | } | |
270 | ||
271 | static void | |
272 | ser_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
273 | { | |
274 | struct ser_windows_state *state; | |
275 | COMSTAT status; | |
276 | DWORD errors; | |
277 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
278 | ||
279 | state = scb->state; | |
280 | ||
281 | *except = state->except_event; | |
282 | *read = state->ov.hEvent; | |
283 | ||
284 | if (state->in_progress) | |
285 | return; | |
286 | ||
287 | /* Reset the mask - we are only interested in any characters which | |
288 | arrive after this point, not characters which might have arrived | |
289 | and already been read. */ | |
290 | ||
291 | /* This really, really shouldn't be necessary - just the second one. | |
292 | But otherwise an internal flag for EV_RXCHAR does not get | |
293 | cleared, and we get a duplicated event, if the last batch | |
294 | of characters included at least two arriving close together. */ | |
295 | if (!SetCommMask (h, 0)) | |
296 | warning (_("ser_windows_wait_handle: reseting mask failed")); | |
297 | ||
298 | if (!SetCommMask (h, EV_RXCHAR)) | |
299 | warning (_("ser_windows_wait_handle: reseting mask failed (2)")); | |
300 | ||
301 | /* There's a potential race condition here; we must check cbInQue | |
302 | and not wait if that's nonzero. */ | |
303 | ||
304 | ClearCommError (h, &errors, &status); | |
305 | if (status.cbInQue > 0) | |
306 | { | |
307 | SetEvent (state->ov.hEvent); | |
308 | return; | |
309 | } | |
310 | ||
311 | state->in_progress = 1; | |
312 | ResetEvent (state->ov.hEvent); | |
313 | state->lastCommMask = -2; | |
314 | if (WaitCommEvent (h, &state->lastCommMask, &state->ov)) | |
315 | { | |
316 | gdb_assert (state->lastCommMask & EV_RXCHAR); | |
317 | SetEvent (state->ov.hEvent); | |
318 | } | |
319 | else | |
320 | gdb_assert (GetLastError () == ERROR_IO_PENDING); | |
321 | } | |
322 | ||
323 | static int | |
324 | ser_windows_read_prim (struct serial *scb, size_t count) | |
325 | { | |
326 | struct ser_windows_state *state; | |
327 | OVERLAPPED ov; | |
328 | DWORD bytes_read, bytes_read_tmp; | |
329 | HANDLE h; | |
330 | gdb_byte *p; | |
331 | ||
332 | state = scb->state; | |
333 | if (state->in_progress) | |
334 | { | |
335 | WaitForSingleObject (state->ov.hEvent, INFINITE); | |
336 | state->in_progress = 0; | |
337 | ResetEvent (state->ov.hEvent); | |
338 | } | |
339 | ||
340 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
341 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
342 | h = (HANDLE) _get_osfhandle (scb->fd); | |
343 | ||
344 | if (!ReadFile (h, scb->buf, /* count */ 1, &bytes_read, &ov)) | |
345 | { | |
346 | if (GetLastError () != ERROR_IO_PENDING | |
347 | || !GetOverlappedResult (h, &ov, &bytes_read, TRUE)) | |
348 | bytes_read = -1; | |
349 | } | |
350 | ||
351 | CloseHandle (ov.hEvent); | |
352 | return bytes_read; | |
353 | } | |
354 | ||
355 | static int | |
356 | ser_windows_write_prim (struct serial *scb, const void *buf, size_t len) | |
357 | { | |
358 | struct ser_windows_state *state; | |
359 | OVERLAPPED ov; | |
360 | DWORD bytes_written; | |
361 | HANDLE h; | |
362 | ||
363 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
364 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
365 | h = (HANDLE) _get_osfhandle (scb->fd); | |
366 | if (!WriteFile (h, buf, len, &bytes_written, &ov)) | |
367 | { | |
368 | if (GetLastError () != ERROR_IO_PENDING | |
369 | || !GetOverlappedResult (h, &ov, &bytes_written, TRUE)) | |
370 | bytes_written = -1; | |
371 | } | |
372 | ||
373 | CloseHandle (ov.hEvent); | |
374 | return bytes_written; | |
375 | } | |
376 | ||
4577549b DJ |
377 | /* On Windows, gdb_select is implemented using WaitForMulpleObjects. |
378 | A "select thread" is created for each file descriptor. These | |
379 | threads looks for activity on the corresponding descriptor, using | |
380 | whatever techniques are appropriate for the descriptor type. When | |
381 | that activity occurs, the thread signals an appropriate event, | |
382 | which wakes up WaitForMultipleObjects. | |
383 | ||
384 | Each select thread is in one of two states: stopped or started. | |
385 | Select threads begin in the stopped state. When gdb_select is | |
386 | called, threads corresponding to the descriptors of interest are | |
387 | started by calling a wait_handle function. Each thread that | |
388 | notices activity signals the appropriate event and then reenters | |
389 | the stopped state. Before gdb_select returns it calls the | |
390 | wait_handle_done functions, which return the threads to the stopped | |
391 | state. */ | |
392 | ||
393 | enum select_thread_state { | |
394 | STS_STARTED, | |
395 | STS_STOPPED | |
396 | }; | |
397 | ||
0ea3f30e DJ |
398 | struct ser_console_state |
399 | { | |
4577549b DJ |
400 | /* Signaled by the select thread to indicate that data is available |
401 | on the file descriptor. */ | |
0ea3f30e | 402 | HANDLE read_event; |
4577549b DJ |
403 | /* Signaled by the select thread to indicate that an exception has |
404 | occurred on the file descriptor. */ | |
0ea3f30e | 405 | HANDLE except_event; |
4577549b DJ |
406 | /* Signaled by the select thread to indicate that it has entered the |
407 | started state. HAVE_STARTED and HAVE_STOPPED are never signaled | |
408 | simultaneously. */ | |
409 | HANDLE have_started; | |
410 | /* Signaled by the select thread to indicate that it has stopped, | |
411 | either because data is available (and READ_EVENT is signaled), | |
412 | because an exception has occurred (and EXCEPT_EVENT is signaled), | |
413 | or because STOP_SELECT was signaled. */ | |
414 | HANDLE have_stopped; | |
0ea3f30e | 415 | |
4577549b DJ |
416 | /* Signaled by the main program to tell the select thread to enter |
417 | the started state. */ | |
0ea3f30e | 418 | HANDLE start_select; |
4577549b | 419 | /* Signaled by the main program to tell the select thread to enter |
c378eb4e | 420 | the stopped state. */ |
0ea3f30e | 421 | HANDLE stop_select; |
4577549b DJ |
422 | /* Signaled by the main program to tell the select thread to |
423 | exit. */ | |
c3e2b812 | 424 | HANDLE exit_select; |
c3e2b812 | 425 | |
4577549b | 426 | /* The handle for the select thread. */ |
c3e2b812 | 427 | HANDLE thread; |
4577549b DJ |
428 | /* The state of the select thread. This field is only accessed in |
429 | the main program, never by the select thread itself. */ | |
430 | enum select_thread_state thread_state; | |
0ea3f30e DJ |
431 | }; |
432 | ||
4577549b DJ |
433 | /* Called by a select thread to enter the stopped state. This |
434 | function does not return until the thread has re-entered the | |
435 | started state. */ | |
436 | static void | |
437 | select_thread_wait (struct ser_console_state *state) | |
438 | { | |
439 | HANDLE wait_events[2]; | |
440 | ||
441 | /* There are two things that can wake us up: a request that we enter | |
442 | the started state, or that we exit this thread. */ | |
443 | wait_events[0] = state->start_select; | |
444 | wait_events[1] = state->exit_select; | |
445 | if (WaitForMultipleObjects (2, wait_events, FALSE, INFINITE) | |
446 | != WAIT_OBJECT_0) | |
447 | /* Either the EXIT_SELECT event was signaled (requesting that the | |
448 | thread exit) or an error has occurred. In either case, we exit | |
449 | the thread. */ | |
450 | ExitThread (0); | |
451 | ||
452 | /* We are now in the started state. */ | |
453 | SetEvent (state->have_started); | |
454 | } | |
455 | ||
456 | typedef DWORD WINAPI (*thread_fn_type)(void *); | |
457 | ||
458 | /* Create a new select thread for SCB executing THREAD_FN. The STATE | |
459 | will be filled in by this function before return. */ | |
a95babbf | 460 | static void |
4577549b DJ |
461 | create_select_thread (thread_fn_type thread_fn, |
462 | struct serial *scb, | |
463 | struct ser_console_state *state) | |
464 | { | |
465 | DWORD threadId; | |
466 | ||
467 | /* Create all of the events. These are all auto-reset events. */ | |
468 | state->read_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
469 | state->except_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
470 | state->have_started = CreateEvent (NULL, FALSE, FALSE, NULL); | |
471 | state->have_stopped = CreateEvent (NULL, FALSE, FALSE, NULL); | |
472 | state->start_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
473 | state->stop_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
474 | state->exit_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
475 | ||
476 | state->thread = CreateThread (NULL, 0, thread_fn, scb, 0, &threadId); | |
477 | /* The thread begins in the stopped state. */ | |
478 | state->thread_state = STS_STOPPED; | |
479 | } | |
480 | ||
481 | /* Destroy the select thread indicated by STATE. */ | |
482 | static void | |
483 | destroy_select_thread (struct ser_console_state *state) | |
484 | { | |
485 | /* Ask the thread to exit. */ | |
486 | SetEvent (state->exit_select); | |
487 | /* Wait until it does. */ | |
488 | WaitForSingleObject (state->thread, INFINITE); | |
489 | ||
490 | /* Destroy the events. */ | |
491 | CloseHandle (state->read_event); | |
492 | CloseHandle (state->except_event); | |
493 | CloseHandle (state->have_started); | |
494 | CloseHandle (state->have_stopped); | |
495 | CloseHandle (state->start_select); | |
496 | CloseHandle (state->stop_select); | |
497 | CloseHandle (state->exit_select); | |
498 | } | |
499 | ||
500 | /* Called by gdb_select to start the select thread indicated by STATE. | |
501 | This function does not return until the thread has started. */ | |
502 | static void | |
503 | start_select_thread (struct ser_console_state *state) | |
504 | { | |
505 | /* Ask the thread to start. */ | |
506 | SetEvent (state->start_select); | |
507 | /* Wait until it does. */ | |
508 | WaitForSingleObject (state->have_started, INFINITE); | |
509 | /* The thread is now started. */ | |
510 | state->thread_state = STS_STARTED; | |
511 | } | |
512 | ||
513 | /* Called by gdb_select to stop the select thread indicated by STATE. | |
514 | This function does not return until the thread has stopped. */ | |
515 | static void | |
516 | stop_select_thread (struct ser_console_state *state) | |
517 | { | |
518 | /* If the thread is already in the stopped state, we have nothing to | |
519 | do. Some of the wait_handle functions avoid calling | |
520 | start_select_thread if they notice activity on the relevant file | |
521 | descriptors. The wait_handle_done functions still call | |
522 | stop_select_thread -- but it is already stopped. */ | |
523 | if (state->thread_state != STS_STARTED) | |
524 | return; | |
525 | /* Ask the thread to stop. */ | |
526 | SetEvent (state->stop_select); | |
527 | /* Wait until it does. */ | |
528 | WaitForSingleObject (state->have_stopped, INFINITE); | |
529 | /* The thread is now stopped. */ | |
530 | state->thread_state = STS_STOPPED; | |
531 | } | |
532 | ||
0ea3f30e DJ |
533 | static DWORD WINAPI |
534 | console_select_thread (void *arg) | |
535 | { | |
536 | struct serial *scb = arg; | |
c3e2b812 DJ |
537 | struct ser_console_state *state; |
538 | int event_index; | |
0ea3f30e DJ |
539 | HANDLE h; |
540 | ||
c3e2b812 DJ |
541 | state = scb->state; |
542 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
543 | |
544 | while (1) | |
545 | { | |
546 | HANDLE wait_events[2]; | |
547 | INPUT_RECORD record; | |
548 | DWORD n_records; | |
549 | ||
4577549b | 550 | select_thread_wait (state); |
c3e2b812 | 551 | |
4577549b DJ |
552 | while (1) |
553 | { | |
554 | wait_events[0] = state->stop_select; | |
555 | wait_events[1] = h; | |
0ea3f30e | 556 | |
3e43a32a MS |
557 | event_index = WaitForMultipleObjects (2, wait_events, |
558 | FALSE, INFINITE); | |
0ea3f30e | 559 | |
4577549b DJ |
560 | if (event_index == WAIT_OBJECT_0 |
561 | || WaitForSingleObject (state->stop_select, 0) == WAIT_OBJECT_0) | |
562 | break; | |
0ea3f30e | 563 | |
4577549b DJ |
564 | if (event_index != WAIT_OBJECT_0 + 1) |
565 | { | |
566 | /* Wait must have failed; assume an error has occured, e.g. | |
567 | the handle has been closed. */ | |
568 | SetEvent (state->except_event); | |
569 | break; | |
570 | } | |
0ea3f30e | 571 | |
4577549b DJ |
572 | /* We've got a pending event on the console. See if it's |
573 | of interest. */ | |
574 | if (!PeekConsoleInput (h, &record, 1, &n_records) || n_records != 1) | |
575 | { | |
576 | /* Something went wrong. Maybe the console is gone. */ | |
577 | SetEvent (state->except_event); | |
578 | break; | |
579 | } | |
0ea3f30e | 580 | |
4577549b | 581 | if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) |
c3e2b812 | 582 | { |
4577549b DJ |
583 | WORD keycode = record.Event.KeyEvent.wVirtualKeyCode; |
584 | ||
585 | /* Ignore events containing only control keys. We must | |
586 | recognize "enhanced" keys which we are interested in | |
587 | reading via getch, if they do not map to ASCII. But we | |
588 | do not want to report input available for e.g. the | |
589 | control key alone. */ | |
590 | ||
591 | if (record.Event.KeyEvent.uChar.AsciiChar != 0 | |
592 | || keycode == VK_PRIOR | |
593 | || keycode == VK_NEXT | |
594 | || keycode == VK_END | |
595 | || keycode == VK_HOME | |
596 | || keycode == VK_LEFT | |
597 | || keycode == VK_UP | |
598 | || keycode == VK_RIGHT | |
599 | || keycode == VK_DOWN | |
600 | || keycode == VK_INSERT | |
601 | || keycode == VK_DELETE) | |
602 | { | |
603 | /* This is really a keypress. */ | |
604 | SetEvent (state->read_event); | |
605 | break; | |
606 | } | |
c3e2b812 | 607 | } |
4577549b DJ |
608 | |
609 | /* Otherwise discard it and wait again. */ | |
610 | ReadConsoleInput (h, &record, 1, &n_records); | |
0ea3f30e DJ |
611 | } |
612 | ||
4577549b | 613 | SetEvent(state->have_stopped); |
0ea3f30e | 614 | } |
a32d7317 | 615 | return 0; |
0ea3f30e DJ |
616 | } |
617 | ||
618 | static int | |
619 | fd_is_pipe (int fd) | |
620 | { | |
621 | if (PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, NULL, NULL)) | |
622 | return 1; | |
623 | else | |
624 | return 0; | |
625 | } | |
626 | ||
7e71daaa JG |
627 | static int |
628 | fd_is_file (int fd) | |
629 | { | |
630 | if (GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_DISK) | |
631 | return 1; | |
632 | else | |
633 | return 0; | |
634 | } | |
635 | ||
0ea3f30e DJ |
636 | static DWORD WINAPI |
637 | pipe_select_thread (void *arg) | |
638 | { | |
639 | struct serial *scb = arg; | |
c3e2b812 DJ |
640 | struct ser_console_state *state; |
641 | int event_index; | |
0ea3f30e DJ |
642 | HANDLE h; |
643 | ||
c3e2b812 DJ |
644 | state = scb->state; |
645 | h = (HANDLE) _get_osfhandle (scb->fd); | |
0ea3f30e DJ |
646 | |
647 | while (1) | |
648 | { | |
0ea3f30e DJ |
649 | DWORD n_avail; |
650 | ||
4577549b | 651 | select_thread_wait (state); |
c3e2b812 | 652 | |
4577549b DJ |
653 | /* Wait for something to happen on the pipe. */ |
654 | while (1) | |
0ea3f30e | 655 | { |
4577549b DJ |
656 | if (!PeekNamedPipe (h, NULL, 0, NULL, &n_avail, NULL)) |
657 | { | |
658 | SetEvent (state->except_event); | |
659 | break; | |
660 | } | |
0ea3f30e | 661 | |
4577549b DJ |
662 | if (n_avail > 0) |
663 | { | |
664 | SetEvent (state->read_event); | |
665 | break; | |
666 | } | |
0ea3f30e | 667 | |
4577549b DJ |
668 | /* Delay 10ms before checking again, but allow the stop |
669 | event to wake us. */ | |
670 | if (WaitForSingleObject (state->stop_select, 10) == WAIT_OBJECT_0) | |
671 | break; | |
672 | } | |
0ea3f30e | 673 | |
4577549b | 674 | SetEvent (state->have_stopped); |
0ea3f30e | 675 | } |
a32d7317 | 676 | return 0; |
0ea3f30e DJ |
677 | } |
678 | ||
7e71daaa JG |
679 | static DWORD WINAPI |
680 | file_select_thread (void *arg) | |
681 | { | |
682 | struct serial *scb = arg; | |
683 | struct ser_console_state *state; | |
684 | int event_index; | |
685 | HANDLE h; | |
686 | ||
687 | state = scb->state; | |
688 | h = (HANDLE) _get_osfhandle (scb->fd); | |
689 | ||
690 | while (1) | |
691 | { | |
4577549b | 692 | select_thread_wait (state); |
7e71daaa | 693 | |
3e43a32a MS |
694 | if (SetFilePointer (h, 0, NULL, FILE_CURRENT) |
695 | == INVALID_SET_FILE_POINTER) | |
4577549b DJ |
696 | SetEvent (state->except_event); |
697 | else | |
698 | SetEvent (state->read_event); | |
7e71daaa | 699 | |
4577549b | 700 | SetEvent (state->have_stopped); |
7e71daaa | 701 | } |
a32d7317 | 702 | return 0; |
7e71daaa JG |
703 | } |
704 | ||
0ea3f30e DJ |
705 | static void |
706 | ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
707 | { | |
708 | struct ser_console_state *state = scb->state; | |
709 | ||
710 | if (state == NULL) | |
711 | { | |
4577549b | 712 | thread_fn_type thread_fn; |
0ea3f30e DJ |
713 | int is_tty; |
714 | ||
715 | is_tty = isatty (scb->fd); | |
7e71daaa | 716 | if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd)) |
0ea3f30e DJ |
717 | { |
718 | *read = NULL; | |
719 | *except = NULL; | |
720 | return; | |
721 | } | |
722 | ||
723 | state = xmalloc (sizeof (struct ser_console_state)); | |
724 | memset (state, 0, sizeof (struct ser_console_state)); | |
725 | scb->state = state; | |
726 | ||
0ea3f30e | 727 | if (is_tty) |
4577549b | 728 | thread_fn = console_select_thread; |
7e71daaa | 729 | else if (fd_is_pipe (scb->fd)) |
4577549b | 730 | thread_fn = pipe_select_thread; |
7e71daaa | 731 | else |
4577549b DJ |
732 | thread_fn = file_select_thread; |
733 | ||
734 | create_select_thread (thread_fn, scb, state); | |
0ea3f30e DJ |
735 | } |
736 | ||
c3e2b812 DJ |
737 | *read = state->read_event; |
738 | *except = state->except_event; | |
739 | ||
740 | /* Start from a blank state. */ | |
0ea3f30e DJ |
741 | ResetEvent (state->read_event); |
742 | ResetEvent (state->except_event); | |
c3e2b812 DJ |
743 | ResetEvent (state->stop_select); |
744 | ||
745 | /* First check for a key already in the buffer. If there is one, | |
746 | we don't need a thread. This also catches the second key of | |
747 | multi-character returns from getch, for instance for arrow | |
748 | keys. The second half is in a C library internal buffer, | |
749 | and PeekConsoleInput will not find it. */ | |
750 | if (_kbhit ()) | |
751 | { | |
752 | SetEvent (state->read_event); | |
753 | return; | |
754 | } | |
0ea3f30e | 755 | |
c3e2b812 | 756 | /* Otherwise, start the select thread. */ |
4577549b | 757 | start_select_thread (state); |
c3e2b812 | 758 | } |
0ea3f30e | 759 | |
c3e2b812 DJ |
760 | static void |
761 | ser_console_done_wait_handle (struct serial *scb) | |
762 | { | |
763 | struct ser_console_state *state = scb->state; | |
764 | ||
765 | if (state == NULL) | |
766 | return; | |
767 | ||
4577549b | 768 | stop_select_thread (state); |
0ea3f30e DJ |
769 | } |
770 | ||
771 | static void | |
772 | ser_console_close (struct serial *scb) | |
773 | { | |
774 | struct ser_console_state *state = scb->state; | |
775 | ||
776 | if (scb->state) | |
777 | { | |
4577549b | 778 | destroy_select_thread (state); |
0ea3f30e DJ |
779 | xfree (scb->state); |
780 | } | |
781 | } | |
782 | ||
783 | struct ser_console_ttystate | |
784 | { | |
785 | int is_a_tty; | |
786 | }; | |
787 | ||
788 | static serial_ttystate | |
789 | ser_console_get_tty_state (struct serial *scb) | |
790 | { | |
791 | if (isatty (scb->fd)) | |
792 | { | |
793 | struct ser_console_ttystate *state; | |
433759f7 | 794 | |
0ea3f30e DJ |
795 | state = (struct ser_console_ttystate *) xmalloc (sizeof *state); |
796 | state->is_a_tty = 1; | |
797 | return state; | |
798 | } | |
799 | else | |
800 | return NULL; | |
801 | } | |
802 | ||
5f1fb6dc JB |
803 | struct pipe_state |
804 | { | |
805 | /* Since we use the pipe_select_thread for our select emulation, | |
806 | we need to place the state structure it requires at the front | |
807 | of our state. */ | |
808 | struct ser_console_state wait; | |
809 | ||
810 | /* The pex obj for our (one-stage) pipeline. */ | |
811 | struct pex_obj *pex; | |
812 | ||
813 | /* Streams for the pipeline's input and output. */ | |
814 | FILE *input, *output; | |
815 | }; | |
816 | ||
817 | static struct pipe_state * | |
818 | make_pipe_state (void) | |
819 | { | |
70ba0933 | 820 | struct pipe_state *ps = XNEW (struct pipe_state); |
5f1fb6dc JB |
821 | |
822 | memset (ps, 0, sizeof (*ps)); | |
823 | ps->wait.read_event = INVALID_HANDLE_VALUE; | |
824 | ps->wait.except_event = INVALID_HANDLE_VALUE; | |
825 | ps->wait.start_select = INVALID_HANDLE_VALUE; | |
826 | ps->wait.stop_select = INVALID_HANDLE_VALUE; | |
827 | ||
828 | return ps; | |
829 | } | |
830 | ||
831 | static void | |
832 | free_pipe_state (struct pipe_state *ps) | |
833 | { | |
834 | int saved_errno = errno; | |
835 | ||
836 | if (ps->wait.read_event != INVALID_HANDLE_VALUE) | |
4577549b | 837 | destroy_select_thread (&ps->wait); |
5f1fb6dc JB |
838 | |
839 | /* Close the pipe to the child. We must close the pipe before | |
840 | calling pex_free because pex_free will wait for the child to exit | |
841 | and the child will not exit until the pipe is closed. */ | |
842 | if (ps->input) | |
843 | fclose (ps->input); | |
844 | if (ps->pex) | |
58f07bae PA |
845 | { |
846 | pex_free (ps->pex); | |
847 | /* pex_free closes ps->output. */ | |
848 | } | |
849 | else if (ps->output) | |
850 | fclose (ps->output); | |
5f1fb6dc JB |
851 | |
852 | xfree (ps); | |
853 | ||
854 | errno = saved_errno; | |
855 | } | |
856 | ||
857 | static void | |
858 | cleanup_pipe_state (void *untyped) | |
859 | { | |
860 | struct pipe_state *ps = untyped; | |
861 | ||
862 | free_pipe_state (ps); | |
863 | } | |
864 | ||
865 | static int | |
866 | pipe_windows_open (struct serial *scb, const char *name) | |
867 | { | |
ef7723eb | 868 | struct pipe_state *ps; |
65cc4390 | 869 | FILE *pex_stderr; |
efdb2a86 PA |
870 | char **argv; |
871 | struct cleanup *back_to; | |
ef7723eb | 872 | |
d1a41061 PP |
873 | if (name == NULL) |
874 | error_no_arg (_("child command")); | |
875 | ||
efdb2a86 PA |
876 | argv = gdb_buildargv (name); |
877 | back_to = make_cleanup_freeargv (argv); | |
d1a41061 | 878 | |
5f1fb6dc | 879 | if (! argv[0] || argv[0][0] == '\0') |
a73c6dcd | 880 | error (_("missing child command")); |
5f1fb6dc | 881 | |
ef7723eb | 882 | ps = make_pipe_state (); |
5f1fb6dc JB |
883 | make_cleanup (cleanup_pipe_state, ps); |
884 | ||
885 | ps->pex = pex_init (PEX_USE_PIPES, "target remote pipe", NULL); | |
886 | if (! ps->pex) | |
887 | goto fail; | |
888 | ps->input = pex_input_pipe (ps->pex, 1); | |
889 | if (! ps->input) | |
890 | goto fail; | |
891 | ||
892 | { | |
893 | int err; | |
894 | const char *err_msg | |
65cc4390 VP |
895 | = pex_run (ps->pex, PEX_SEARCH | PEX_BINARY_INPUT | PEX_BINARY_OUTPUT |
896 | | PEX_STDERR_TO_PIPE, | |
5f1fb6dc JB |
897 | argv[0], argv, NULL, NULL, |
898 | &err); | |
899 | ||
900 | if (err_msg) | |
901 | { | |
902 | /* Our caller expects us to return -1, but all they'll do with | |
903 | it generally is print the message based on errno. We have | |
904 | all the same information here, plus err_msg provided by | |
905 | pex_run, so we just raise the error here. */ | |
906 | if (err) | |
a73c6dcd | 907 | error (_("error starting child process '%s': %s: %s"), |
5f1fb6dc JB |
908 | name, err_msg, safe_strerror (err)); |
909 | else | |
a73c6dcd | 910 | error (_("error starting child process '%s': %s"), |
5f1fb6dc JB |
911 | name, err_msg); |
912 | } | |
913 | } | |
914 | ||
915 | ps->output = pex_read_output (ps->pex, 1); | |
916 | if (! ps->output) | |
917 | goto fail; | |
5f1fb6dc | 918 | scb->fd = fileno (ps->output); |
65cc4390 VP |
919 | |
920 | pex_stderr = pex_read_err (ps->pex, 1); | |
921 | if (! pex_stderr) | |
922 | goto fail; | |
923 | scb->error_fd = fileno (pex_stderr); | |
924 | ||
5f1fb6dc JB |
925 | scb->state = (void *) ps; |
926 | ||
927 | discard_cleanups (back_to); | |
928 | return 0; | |
929 | ||
930 | fail: | |
931 | do_cleanups (back_to); | |
932 | return -1; | |
933 | } | |
934 | ||
58f07bae PA |
935 | static int |
936 | pipe_windows_fdopen (struct serial *scb, int fd) | |
937 | { | |
938 | struct pipe_state *ps; | |
939 | ||
940 | ps = make_pipe_state (); | |
941 | ||
942 | ps->input = fdopen (fd, "r+"); | |
943 | if (! ps->input) | |
944 | goto fail; | |
945 | ||
946 | ps->output = fdopen (fd, "r+"); | |
947 | if (! ps->output) | |
948 | goto fail; | |
949 | ||
950 | scb->fd = fd; | |
951 | scb->state = (void *) ps; | |
952 | ||
953 | return 0; | |
954 | ||
955 | fail: | |
956 | free_pipe_state (ps); | |
957 | return -1; | |
958 | } | |
5f1fb6dc JB |
959 | |
960 | static void | |
961 | pipe_windows_close (struct serial *scb) | |
962 | { | |
963 | struct pipe_state *ps = scb->state; | |
964 | ||
965 | /* In theory, we should try to kill the subprocess here, but the pex | |
966 | interface doesn't give us enough information to do that. Usually | |
967 | closing the input pipe will get the message across. */ | |
968 | ||
969 | free_pipe_state (ps); | |
970 | } | |
971 | ||
972 | ||
973 | static int | |
974 | pipe_windows_read (struct serial *scb, size_t count) | |
975 | { | |
4998c1df | 976 | HANDLE pipeline_out = (HANDLE) _get_osfhandle (scb->fd); |
ef7723eb VP |
977 | DWORD available; |
978 | DWORD bytes_read; | |
979 | ||
5f1fb6dc JB |
980 | if (pipeline_out == INVALID_HANDLE_VALUE) |
981 | return -1; | |
982 | ||
5f1fb6dc JB |
983 | if (! PeekNamedPipe (pipeline_out, NULL, 0, NULL, &available, NULL)) |
984 | return -1; | |
985 | ||
986 | if (count > available) | |
987 | count = available; | |
988 | ||
5f1fb6dc JB |
989 | if (! ReadFile (pipeline_out, scb->buf, count, &bytes_read, NULL)) |
990 | return -1; | |
991 | ||
992 | return bytes_read; | |
993 | } | |
994 | ||
995 | ||
996 | static int | |
997 | pipe_windows_write (struct serial *scb, const void *buf, size_t count) | |
998 | { | |
999 | struct pipe_state *ps = scb->state; | |
ef7723eb VP |
1000 | HANDLE pipeline_in; |
1001 | DWORD written; | |
1002 | ||
5f1fb6dc JB |
1003 | int pipeline_in_fd = fileno (ps->input); |
1004 | if (pipeline_in_fd < 0) | |
1005 | return -1; | |
1006 | ||
ef7723eb | 1007 | pipeline_in = (HANDLE) _get_osfhandle (pipeline_in_fd); |
5f1fb6dc JB |
1008 | if (pipeline_in == INVALID_HANDLE_VALUE) |
1009 | return -1; | |
1010 | ||
5f1fb6dc JB |
1011 | if (! WriteFile (pipeline_in, buf, count, &written, NULL)) |
1012 | return -1; | |
1013 | ||
1014 | return written; | |
1015 | } | |
1016 | ||
1017 | ||
1018 | static void | |
1019 | pipe_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1020 | { | |
1021 | struct pipe_state *ps = scb->state; | |
1022 | ||
1023 | /* Have we allocated our events yet? */ | |
1024 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
4577549b DJ |
1025 | /* Start the thread. */ |
1026 | create_select_thread (pipe_select_thread, scb, &ps->wait); | |
5f1fb6dc | 1027 | |
774a49c0 DJ |
1028 | *read = ps->wait.read_event; |
1029 | *except = ps->wait.except_event; | |
1030 | ||
1031 | /* Start from a blank state. */ | |
5f1fb6dc JB |
1032 | ResetEvent (ps->wait.read_event); |
1033 | ResetEvent (ps->wait.except_event); | |
774a49c0 | 1034 | ResetEvent (ps->wait.stop_select); |
5f1fb6dc | 1035 | |
4577549b | 1036 | start_select_thread (&ps->wait); |
5f1fb6dc JB |
1037 | } |
1038 | ||
774a49c0 DJ |
1039 | static void |
1040 | pipe_done_wait_handle (struct serial *scb) | |
1041 | { | |
1042 | struct pipe_state *ps = scb->state; | |
1043 | ||
1044 | /* Have we allocated our events yet? */ | |
1045 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
1046 | return; | |
1047 | ||
4577549b | 1048 | stop_select_thread (&ps->wait); |
774a49c0 | 1049 | } |
5f1fb6dc | 1050 | |
65cc4390 VP |
1051 | static int |
1052 | pipe_avail (struct serial *scb, int fd) | |
1053 | { | |
1054 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
1055 | DWORD numBytes; | |
1056 | BOOL r = PeekNamedPipe (h, NULL, 0, NULL, &numBytes, NULL); | |
433759f7 | 1057 | |
65cc4390 VP |
1058 | if (r == FALSE) |
1059 | numBytes = 0; | |
1060 | return numBytes; | |
1061 | } | |
1062 | ||
58f07bae PA |
1063 | int |
1064 | gdb_pipe (int pdes[2]) | |
1065 | { | |
1066 | if (_pipe (pdes, 512, _O_BINARY | _O_NOINHERIT) == -1) | |
1067 | return -1; | |
1068 | return 0; | |
1069 | } | |
1070 | ||
0ea3f30e DJ |
1071 | struct net_windows_state |
1072 | { | |
4577549b DJ |
1073 | struct ser_console_state base; |
1074 | ||
0ea3f30e DJ |
1075 | HANDLE sock_event; |
1076 | }; | |
1077 | ||
364fe1f7 PA |
1078 | /* Check whether the socket has any pending data to be read. If so, |
1079 | set the select thread's read event. On error, set the select | |
1080 | thread's except event. If any event was set, return true, | |
1081 | otherwise return false. */ | |
1082 | ||
1083 | static int | |
1084 | net_windows_socket_check_pending (struct serial *scb) | |
1085 | { | |
1086 | struct net_windows_state *state = scb->state; | |
1087 | unsigned long available; | |
1088 | ||
1089 | if (ioctlsocket (scb->fd, FIONREAD, &available) != 0) | |
1090 | { | |
1091 | /* The socket closed, or some other error. */ | |
1092 | SetEvent (state->base.except_event); | |
1093 | return 1; | |
1094 | } | |
1095 | else if (available > 0) | |
1096 | { | |
1097 | SetEvent (state->base.read_event); | |
1098 | return 1; | |
1099 | } | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
0ea3f30e DJ |
1104 | static DWORD WINAPI |
1105 | net_windows_select_thread (void *arg) | |
1106 | { | |
1107 | struct serial *scb = arg; | |
4577549b | 1108 | struct net_windows_state *state; |
c3e2b812 | 1109 | int event_index; |
0ea3f30e | 1110 | |
c3e2b812 | 1111 | state = scb->state; |
0ea3f30e DJ |
1112 | |
1113 | while (1) | |
1114 | { | |
1115 | HANDLE wait_events[2]; | |
1116 | WSANETWORKEVENTS events; | |
1117 | ||
4577549b | 1118 | select_thread_wait (&state->base); |
c3e2b812 | 1119 | |
4577549b | 1120 | wait_events[0] = state->base.stop_select; |
0ea3f30e DJ |
1121 | wait_events[1] = state->sock_event; |
1122 | ||
364fe1f7 PA |
1123 | /* Wait for something to happen on the socket. */ |
1124 | while (1) | |
0ea3f30e | 1125 | { |
364fe1f7 PA |
1126 | event_index = WaitForMultipleObjects (2, wait_events, FALSE, INFINITE); |
1127 | ||
1128 | if (event_index == WAIT_OBJECT_0 | |
1129 | || WaitForSingleObject (state->base.stop_select, 0) == WAIT_OBJECT_0) | |
1130 | { | |
1131 | /* We have been requested to stop. */ | |
1132 | break; | |
1133 | } | |
1134 | ||
1135 | if (event_index != WAIT_OBJECT_0 + 1) | |
1136 | { | |
1137 | /* Some error has occured. Assume that this is an error | |
1138 | condition. */ | |
1139 | SetEvent (state->base.except_event); | |
1140 | break; | |
1141 | } | |
1142 | ||
4577549b DJ |
1143 | /* Enumerate the internal network events, and reset the |
1144 | object that signalled us to catch the next event. */ | |
364fe1f7 PA |
1145 | if (WSAEnumNetworkEvents (scb->fd, state->sock_event, &events) != 0) |
1146 | { | |
1147 | /* Something went wrong. Maybe the socket is gone. */ | |
1148 | SetEvent (state->base.except_event); | |
1149 | break; | |
1150 | } | |
1151 | ||
4577549b | 1152 | if (events.lNetworkEvents & FD_READ) |
364fe1f7 PA |
1153 | { |
1154 | if (net_windows_socket_check_pending (scb)) | |
1155 | break; | |
1156 | ||
1157 | /* Spurious wakeup. That is, the socket's event was | |
1158 | signalled before we last called recv. */ | |
1159 | } | |
1160 | ||
4577549b | 1161 | if (events.lNetworkEvents & FD_CLOSE) |
364fe1f7 PA |
1162 | { |
1163 | SetEvent (state->base.except_event); | |
1164 | break; | |
1165 | } | |
0ea3f30e DJ |
1166 | } |
1167 | ||
4577549b | 1168 | SetEvent (state->base.have_stopped); |
0ea3f30e | 1169 | } |
364fe1f7 | 1170 | return 0; |
0ea3f30e DJ |
1171 | } |
1172 | ||
1173 | static void | |
1174 | net_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1175 | { | |
1176 | struct net_windows_state *state = scb->state; | |
1177 | ||
c3e2b812 | 1178 | /* Start from a clean slate. */ |
4577549b DJ |
1179 | ResetEvent (state->base.read_event); |
1180 | ResetEvent (state->base.except_event); | |
1181 | ResetEvent (state->base.stop_select); | |
0ea3f30e | 1182 | |
4577549b DJ |
1183 | *read = state->base.read_event; |
1184 | *except = state->base.except_event; | |
c3e2b812 | 1185 | |
364fe1f7 PA |
1186 | /* Check any pending events. Otherwise, start the select |
1187 | thread. */ | |
1188 | if (!net_windows_socket_check_pending (scb)) | |
1189 | start_select_thread (&state->base); | |
c3e2b812 DJ |
1190 | } |
1191 | ||
1192 | static void | |
1193 | net_windows_done_wait_handle (struct serial *scb) | |
1194 | { | |
1195 | struct net_windows_state *state = scb->state; | |
1196 | ||
4577549b | 1197 | stop_select_thread (&state->base); |
0ea3f30e DJ |
1198 | } |
1199 | ||
1200 | static int | |
1201 | net_windows_open (struct serial *scb, const char *name) | |
1202 | { | |
1203 | struct net_windows_state *state; | |
1204 | int ret; | |
1205 | DWORD threadId; | |
1206 | ||
1207 | ret = net_open (scb, name); | |
1208 | if (ret != 0) | |
1209 | return ret; | |
1210 | ||
1211 | state = xmalloc (sizeof (struct net_windows_state)); | |
1212 | memset (state, 0, sizeof (struct net_windows_state)); | |
1213 | scb->state = state; | |
1214 | ||
0ea3f30e DJ |
1215 | /* Associate an event with the socket. */ |
1216 | state->sock_event = CreateEvent (0, TRUE, FALSE, 0); | |
1217 | WSAEventSelect (scb->fd, state->sock_event, FD_READ | FD_CLOSE); | |
1218 | ||
4577549b DJ |
1219 | /* Start the thread. */ |
1220 | create_select_thread (net_windows_select_thread, scb, &state->base); | |
0ea3f30e DJ |
1221 | |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | ||
1226 | static void | |
1227 | net_windows_close (struct serial *scb) | |
1228 | { | |
1229 | struct net_windows_state *state = scb->state; | |
1230 | ||
4577549b | 1231 | destroy_select_thread (&state->base); |
0ea3f30e DJ |
1232 | CloseHandle (state->sock_event); |
1233 | ||
1234 | xfree (scb->state); | |
1235 | ||
1236 | net_close (scb); | |
1237 | } | |
1238 | ||
12e8c7d7 TT |
1239 | /* The serial port driver. */ |
1240 | ||
1241 | static const struct serial_ops hardwire_ops = | |
1242 | { | |
1243 | "hardwire", | |
1244 | ser_windows_open, | |
1245 | ser_windows_close, | |
1246 | NULL, | |
1247 | ser_base_readchar, | |
1248 | ser_base_write, | |
1249 | ser_windows_flush_output, | |
1250 | ser_windows_flush_input, | |
1251 | ser_windows_send_break, | |
1252 | ser_windows_raw, | |
1253 | /* These are only used for stdin; we do not need them for serial | |
1254 | ports, so supply the standard dummies. */ | |
1255 | ser_base_get_tty_state, | |
1256 | ser_base_copy_tty_state, | |
1257 | ser_base_set_tty_state, | |
1258 | ser_base_print_tty_state, | |
1259 | ser_base_noflush_set_tty_state, | |
1260 | ser_windows_setbaudrate, | |
1261 | ser_windows_setstopbits, | |
236af5e3 | 1262 | ser_windows_setparity, |
12e8c7d7 TT |
1263 | ser_windows_drain_output, |
1264 | ser_base_async, | |
1265 | ser_windows_read_prim, | |
1266 | ser_windows_write_prim, | |
1267 | NULL, | |
1268 | ser_windows_wait_handle | |
1269 | }; | |
1270 | ||
1271 | /* The dummy serial driver used for terminals. We only provide the | |
1272 | TTY-related methods. */ | |
1273 | ||
1274 | static const struct serial_ops tty_ops = | |
1275 | { | |
1276 | "terminal", | |
1277 | NULL, | |
1278 | ser_console_close, | |
1279 | NULL, | |
1280 | NULL, | |
1281 | NULL, | |
1282 | NULL, | |
1283 | NULL, | |
1284 | NULL, | |
1285 | NULL, | |
1286 | ser_console_get_tty_state, | |
1287 | ser_base_copy_tty_state, | |
1288 | ser_base_set_tty_state, | |
1289 | ser_base_print_tty_state, | |
1290 | ser_base_noflush_set_tty_state, | |
1291 | NULL, | |
1292 | NULL, | |
236af5e3 | 1293 | NULL, |
12e8c7d7 TT |
1294 | ser_base_drain_output, |
1295 | NULL, | |
1296 | NULL, | |
1297 | NULL, | |
1298 | NULL, | |
1299 | ser_console_wait_handle, | |
1300 | ser_console_done_wait_handle | |
1301 | }; | |
1302 | ||
1303 | /* The pipe interface. */ | |
1304 | ||
1305 | static const struct serial_ops pipe_ops = | |
1306 | { | |
1307 | "pipe", | |
1308 | pipe_windows_open, | |
1309 | pipe_windows_close, | |
1310 | pipe_windows_fdopen, | |
1311 | ser_base_readchar, | |
1312 | ser_base_write, | |
1313 | ser_base_flush_output, | |
1314 | ser_base_flush_input, | |
1315 | ser_base_send_break, | |
1316 | ser_base_raw, | |
1317 | ser_base_get_tty_state, | |
1318 | ser_base_copy_tty_state, | |
1319 | ser_base_set_tty_state, | |
1320 | ser_base_print_tty_state, | |
1321 | ser_base_noflush_set_tty_state, | |
1322 | ser_base_setbaudrate, | |
1323 | ser_base_setstopbits, | |
236af5e3 | 1324 | ser_base_setparity, |
12e8c7d7 TT |
1325 | ser_base_drain_output, |
1326 | ser_base_async, | |
1327 | pipe_windows_read, | |
1328 | pipe_windows_write, | |
1329 | pipe_avail, | |
1330 | pipe_wait_handle, | |
1331 | pipe_done_wait_handle | |
1332 | }; | |
1333 | ||
1334 | /* The TCP/UDP socket driver. */ | |
1335 | ||
1336 | static const struct serial_ops tcp_ops = | |
1337 | { | |
1338 | "tcp", | |
1339 | net_windows_open, | |
1340 | net_windows_close, | |
1341 | NULL, | |
1342 | ser_base_readchar, | |
1343 | ser_base_write, | |
1344 | ser_base_flush_output, | |
1345 | ser_base_flush_input, | |
1346 | ser_tcp_send_break, | |
1347 | ser_base_raw, | |
1348 | ser_base_get_tty_state, | |
1349 | ser_base_copy_tty_state, | |
1350 | ser_base_set_tty_state, | |
1351 | ser_base_print_tty_state, | |
1352 | ser_base_noflush_set_tty_state, | |
1353 | ser_base_setbaudrate, | |
1354 | ser_base_setstopbits, | |
236af5e3 | 1355 | ser_base_setparity, |
12e8c7d7 TT |
1356 | ser_base_drain_output, |
1357 | ser_base_async, | |
1358 | net_read_prim, | |
1359 | net_write_prim, | |
1360 | NULL, | |
1361 | net_windows_wait_handle, | |
1362 | net_windows_done_wait_handle | |
1363 | }; | |
1364 | ||
0ea3f30e DJ |
1365 | void |
1366 | _initialize_ser_windows (void) | |
1367 | { | |
1368 | WSADATA wsa_data; | |
1369 | struct serial_ops *ops; | |
1370 | ||
4af53f97 PM |
1371 | HMODULE hm = NULL; |
1372 | ||
1373 | /* First find out if kernel32 exports CancelIo function. */ | |
1374 | hm = LoadLibrary ("kernel32.dll"); | |
1375 | if (hm) | |
1376 | { | |
1377 | CancelIo = (void *) GetProcAddress (hm, "CancelIo"); | |
1378 | FreeLibrary (hm); | |
1379 | } | |
1380 | else | |
1381 | CancelIo = NULL; | |
0ea3f30e | 1382 | |
12e8c7d7 TT |
1383 | serial_add_interface (&hardwire_ops); |
1384 | serial_add_interface (&tty_ops); | |
1385 | serial_add_interface (&pipe_ops); | |
5f1fb6dc | 1386 | |
0ea3f30e DJ |
1387 | /* If WinSock works, register the TCP/UDP socket driver. */ |
1388 | ||
1389 | if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0) | |
1390 | /* WinSock is unavailable. */ | |
1391 | return; | |
1392 | ||
12e8c7d7 | 1393 | serial_add_interface (&tcp_ops); |
0ea3f30e | 1394 | } |