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0ea3f30e DJ |
1 | /* Serial interface for local (hardwired) serial ports on Windows systems |
2 | ||
61baf725 | 3 | Copyright (C) 2006-2017 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 | |
cd78b7a1 PA |
47 | typedef BOOL WINAPI (CancelIo_ftype) (HANDLE); |
48 | static CancelIo_ftype *CancelIo; | |
4af53f97 | 49 | |
0ea3f30e DJ |
50 | /* Open up a real live device for serial I/O. */ |
51 | ||
52 | static int | |
53 | ser_windows_open (struct serial *scb, const char *name) | |
54 | { | |
55 | HANDLE h; | |
56 | struct ser_windows_state *state; | |
57 | COMMTIMEOUTS timeouts; | |
58 | ||
0ea3f30e DJ |
59 | h = CreateFile (name, GENERIC_READ | GENERIC_WRITE, 0, NULL, |
60 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); | |
61 | if (h == INVALID_HANDLE_VALUE) | |
62 | { | |
63 | errno = ENOENT; | |
64 | return -1; | |
65 | } | |
66 | ||
1be7fe8d | 67 | scb->fd = _open_osfhandle ((intptr_t) h, O_RDWR); |
0ea3f30e DJ |
68 | if (scb->fd < 0) |
69 | { | |
70 | errno = ENOENT; | |
71 | return -1; | |
72 | } | |
73 | ||
74 | if (!SetCommMask (h, EV_RXCHAR)) | |
75 | { | |
76 | errno = EINVAL; | |
77 | return -1; | |
78 | } | |
79 | ||
80 | timeouts.ReadIntervalTimeout = MAXDWORD; | |
81 | timeouts.ReadTotalTimeoutConstant = 0; | |
82 | timeouts.ReadTotalTimeoutMultiplier = 0; | |
83 | timeouts.WriteTotalTimeoutConstant = 0; | |
84 | timeouts.WriteTotalTimeoutMultiplier = 0; | |
85 | if (!SetCommTimeouts (h, &timeouts)) | |
86 | { | |
87 | errno = EINVAL; | |
88 | return -1; | |
89 | } | |
90 | ||
8d749320 | 91 | state = XCNEW (struct ser_windows_state); |
0ea3f30e DJ |
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 | 165 | |
0ea3f30e | 166 | if (SetCommState (h, &state) == 0) |
b37520b6 | 167 | warning (_("SetCommState failed")); |
0ea3f30e DJ |
168 | } |
169 | ||
170 | static int | |
171 | ser_windows_setstopbits (struct serial *scb, int num) | |
172 | { | |
173 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
174 | DCB state; | |
175 | ||
176 | if (GetCommState (h, &state) == 0) | |
177 | return -1; | |
178 | ||
179 | switch (num) | |
180 | { | |
181 | case SERIAL_1_STOPBITS: | |
182 | state.StopBits = ONESTOPBIT; | |
183 | break; | |
184 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
185 | state.StopBits = ONE5STOPBITS; | |
186 | break; | |
187 | case SERIAL_2_STOPBITS: | |
188 | state.StopBits = TWOSTOPBITS; | |
189 | break; | |
190 | default: | |
191 | return 1; | |
192 | } | |
193 | ||
194 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
195 | } | |
196 | ||
236af5e3 YG |
197 | /* Implement the "setparity" serial_ops callback. */ |
198 | ||
199 | static int | |
200 | ser_windows_setparity (struct serial *scb, int parity) | |
201 | { | |
202 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
203 | DCB state; | |
204 | ||
205 | if (GetCommState (h, &state) == 0) | |
206 | return -1; | |
207 | ||
208 | switch (parity) | |
209 | { | |
210 | case GDBPARITY_NONE: | |
211 | state.Parity = NOPARITY; | |
212 | state.fParity = FALSE; | |
213 | break; | |
214 | case GDBPARITY_ODD: | |
215 | state.Parity = ODDPARITY; | |
216 | state.fParity = TRUE; | |
217 | break; | |
218 | case GDBPARITY_EVEN: | |
219 | state.Parity = EVENPARITY; | |
220 | state.fParity = TRUE; | |
221 | break; | |
222 | default: | |
223 | internal_warning (__FILE__, __LINE__, | |
8a4506c0 | 224 | "Incorrect parity value: %d", parity); |
236af5e3 YG |
225 | return -1; |
226 | } | |
227 | ||
228 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
229 | } | |
230 | ||
0ea3f30e DJ |
231 | static int |
232 | ser_windows_setbaudrate (struct serial *scb, int rate) | |
233 | { | |
234 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
235 | DCB state; | |
236 | ||
237 | if (GetCommState (h, &state) == 0) | |
238 | return -1; | |
239 | ||
240 | state.BaudRate = rate; | |
241 | ||
242 | return (SetCommState (h, &state) != 0) ? 0 : -1; | |
243 | } | |
244 | ||
245 | static void | |
246 | ser_windows_close (struct serial *scb) | |
247 | { | |
248 | struct ser_windows_state *state; | |
249 | ||
e25b2cfa PM |
250 | /* Stop any pending selects. On Windows 95 OS, CancelIo function does |
251 | not exist. In that case, it can be replaced by a call to CloseHandle, | |
252 | but this is not necessary here as we do close the Windows handle | |
253 | by calling close (scb->fd) below. */ | |
4af53f97 PM |
254 | if (CancelIo) |
255 | CancelIo ((HANDLE) _get_osfhandle (scb->fd)); | |
cd78b7a1 | 256 | state = (struct ser_windows_state *) scb->state; |
0ea3f30e DJ |
257 | CloseHandle (state->ov.hEvent); |
258 | CloseHandle (state->except_event); | |
259 | ||
260 | if (scb->fd < 0) | |
261 | return; | |
262 | ||
263 | close (scb->fd); | |
264 | scb->fd = -1; | |
265 | ||
266 | xfree (scb->state); | |
267 | } | |
268 | ||
269 | static void | |
270 | ser_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
271 | { | |
272 | struct ser_windows_state *state; | |
273 | COMSTAT status; | |
274 | DWORD errors; | |
275 | HANDLE h = (HANDLE) _get_osfhandle (scb->fd); | |
276 | ||
cd78b7a1 | 277 | state = (struct ser_windows_state *) scb->state; |
0ea3f30e DJ |
278 | |
279 | *except = state->except_event; | |
280 | *read = state->ov.hEvent; | |
281 | ||
282 | if (state->in_progress) | |
283 | return; | |
284 | ||
285 | /* Reset the mask - we are only interested in any characters which | |
286 | arrive after this point, not characters which might have arrived | |
287 | and already been read. */ | |
288 | ||
289 | /* This really, really shouldn't be necessary - just the second one. | |
290 | But otherwise an internal flag for EV_RXCHAR does not get | |
291 | cleared, and we get a duplicated event, if the last batch | |
292 | of characters included at least two arriving close together. */ | |
293 | if (!SetCommMask (h, 0)) | |
294 | warning (_("ser_windows_wait_handle: reseting mask failed")); | |
295 | ||
296 | if (!SetCommMask (h, EV_RXCHAR)) | |
297 | warning (_("ser_windows_wait_handle: reseting mask failed (2)")); | |
298 | ||
299 | /* There's a potential race condition here; we must check cbInQue | |
300 | and not wait if that's nonzero. */ | |
301 | ||
302 | ClearCommError (h, &errors, &status); | |
303 | if (status.cbInQue > 0) | |
304 | { | |
305 | SetEvent (state->ov.hEvent); | |
306 | return; | |
307 | } | |
308 | ||
309 | state->in_progress = 1; | |
310 | ResetEvent (state->ov.hEvent); | |
311 | state->lastCommMask = -2; | |
312 | if (WaitCommEvent (h, &state->lastCommMask, &state->ov)) | |
313 | { | |
314 | gdb_assert (state->lastCommMask & EV_RXCHAR); | |
315 | SetEvent (state->ov.hEvent); | |
316 | } | |
317 | else | |
318 | gdb_assert (GetLastError () == ERROR_IO_PENDING); | |
319 | } | |
320 | ||
321 | static int | |
322 | ser_windows_read_prim (struct serial *scb, size_t count) | |
323 | { | |
324 | struct ser_windows_state *state; | |
325 | OVERLAPPED ov; | |
326 | DWORD bytes_read, bytes_read_tmp; | |
327 | HANDLE h; | |
328 | gdb_byte *p; | |
329 | ||
cd78b7a1 | 330 | state = (struct ser_windows_state *) scb->state; |
0ea3f30e DJ |
331 | if (state->in_progress) |
332 | { | |
333 | WaitForSingleObject (state->ov.hEvent, INFINITE); | |
334 | state->in_progress = 0; | |
335 | ResetEvent (state->ov.hEvent); | |
336 | } | |
337 | ||
338 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
339 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
340 | h = (HANDLE) _get_osfhandle (scb->fd); | |
341 | ||
342 | if (!ReadFile (h, scb->buf, /* count */ 1, &bytes_read, &ov)) | |
343 | { | |
344 | if (GetLastError () != ERROR_IO_PENDING | |
345 | || !GetOverlappedResult (h, &ov, &bytes_read, TRUE)) | |
346 | bytes_read = -1; | |
347 | } | |
348 | ||
349 | CloseHandle (ov.hEvent); | |
350 | return bytes_read; | |
351 | } | |
352 | ||
353 | static int | |
354 | ser_windows_write_prim (struct serial *scb, const void *buf, size_t len) | |
355 | { | |
356 | struct ser_windows_state *state; | |
357 | OVERLAPPED ov; | |
358 | DWORD bytes_written; | |
359 | HANDLE h; | |
360 | ||
361 | memset (&ov, 0, sizeof (OVERLAPPED)); | |
362 | ov.hEvent = CreateEvent (0, FALSE, FALSE, 0); | |
363 | h = (HANDLE) _get_osfhandle (scb->fd); | |
364 | if (!WriteFile (h, buf, len, &bytes_written, &ov)) | |
365 | { | |
366 | if (GetLastError () != ERROR_IO_PENDING | |
367 | || !GetOverlappedResult (h, &ov, &bytes_written, TRUE)) | |
368 | bytes_written = -1; | |
369 | } | |
370 | ||
371 | CloseHandle (ov.hEvent); | |
372 | return bytes_written; | |
373 | } | |
374 | ||
4577549b DJ |
375 | /* On Windows, gdb_select is implemented using WaitForMulpleObjects. |
376 | A "select thread" is created for each file descriptor. These | |
377 | threads looks for activity on the corresponding descriptor, using | |
378 | whatever techniques are appropriate for the descriptor type. When | |
379 | that activity occurs, the thread signals an appropriate event, | |
380 | which wakes up WaitForMultipleObjects. | |
381 | ||
382 | Each select thread is in one of two states: stopped or started. | |
383 | Select threads begin in the stopped state. When gdb_select is | |
384 | called, threads corresponding to the descriptors of interest are | |
385 | started by calling a wait_handle function. Each thread that | |
386 | notices activity signals the appropriate event and then reenters | |
387 | the stopped state. Before gdb_select returns it calls the | |
388 | wait_handle_done functions, which return the threads to the stopped | |
389 | state. */ | |
390 | ||
391 | enum select_thread_state { | |
392 | STS_STARTED, | |
393 | STS_STOPPED | |
394 | }; | |
395 | ||
0ea3f30e DJ |
396 | struct ser_console_state |
397 | { | |
4577549b DJ |
398 | /* Signaled by the select thread to indicate that data is available |
399 | on the file descriptor. */ | |
0ea3f30e | 400 | HANDLE read_event; |
4577549b DJ |
401 | /* Signaled by the select thread to indicate that an exception has |
402 | occurred on the file descriptor. */ | |
0ea3f30e | 403 | HANDLE except_event; |
4577549b DJ |
404 | /* Signaled by the select thread to indicate that it has entered the |
405 | started state. HAVE_STARTED and HAVE_STOPPED are never signaled | |
406 | simultaneously. */ | |
407 | HANDLE have_started; | |
408 | /* Signaled by the select thread to indicate that it has stopped, | |
409 | either because data is available (and READ_EVENT is signaled), | |
410 | because an exception has occurred (and EXCEPT_EVENT is signaled), | |
411 | or because STOP_SELECT was signaled. */ | |
412 | HANDLE have_stopped; | |
0ea3f30e | 413 | |
4577549b DJ |
414 | /* Signaled by the main program to tell the select thread to enter |
415 | the started state. */ | |
0ea3f30e | 416 | HANDLE start_select; |
4577549b | 417 | /* Signaled by the main program to tell the select thread to enter |
c378eb4e | 418 | the stopped state. */ |
0ea3f30e | 419 | HANDLE stop_select; |
4577549b DJ |
420 | /* Signaled by the main program to tell the select thread to |
421 | exit. */ | |
c3e2b812 | 422 | HANDLE exit_select; |
c3e2b812 | 423 | |
4577549b | 424 | /* The handle for the select thread. */ |
c3e2b812 | 425 | HANDLE thread; |
4577549b DJ |
426 | /* The state of the select thread. This field is only accessed in |
427 | the main program, never by the select thread itself. */ | |
428 | enum select_thread_state thread_state; | |
0ea3f30e DJ |
429 | }; |
430 | ||
4577549b DJ |
431 | /* Called by a select thread to enter the stopped state. This |
432 | function does not return until the thread has re-entered the | |
433 | started state. */ | |
434 | static void | |
435 | select_thread_wait (struct ser_console_state *state) | |
436 | { | |
437 | HANDLE wait_events[2]; | |
438 | ||
439 | /* There are two things that can wake us up: a request that we enter | |
440 | the started state, or that we exit this thread. */ | |
441 | wait_events[0] = state->start_select; | |
442 | wait_events[1] = state->exit_select; | |
443 | if (WaitForMultipleObjects (2, wait_events, FALSE, INFINITE) | |
444 | != WAIT_OBJECT_0) | |
445 | /* Either the EXIT_SELECT event was signaled (requesting that the | |
446 | thread exit) or an error has occurred. In either case, we exit | |
447 | the thread. */ | |
448 | ExitThread (0); | |
449 | ||
450 | /* We are now in the started state. */ | |
451 | SetEvent (state->have_started); | |
452 | } | |
453 | ||
454 | typedef DWORD WINAPI (*thread_fn_type)(void *); | |
455 | ||
456 | /* Create a new select thread for SCB executing THREAD_FN. The STATE | |
457 | will be filled in by this function before return. */ | |
a95babbf | 458 | static void |
4577549b DJ |
459 | create_select_thread (thread_fn_type thread_fn, |
460 | struct serial *scb, | |
461 | struct ser_console_state *state) | |
462 | { | |
463 | DWORD threadId; | |
464 | ||
465 | /* Create all of the events. These are all auto-reset events. */ | |
466 | state->read_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
467 | state->except_event = CreateEvent (NULL, FALSE, FALSE, NULL); | |
468 | state->have_started = CreateEvent (NULL, FALSE, FALSE, NULL); | |
469 | state->have_stopped = CreateEvent (NULL, FALSE, FALSE, NULL); | |
470 | state->start_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
471 | state->stop_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
472 | state->exit_select = CreateEvent (NULL, FALSE, FALSE, NULL); | |
473 | ||
474 | state->thread = CreateThread (NULL, 0, thread_fn, scb, 0, &threadId); | |
475 | /* The thread begins in the stopped state. */ | |
476 | state->thread_state = STS_STOPPED; | |
477 | } | |
478 | ||
479 | /* Destroy the select thread indicated by STATE. */ | |
480 | static void | |
481 | destroy_select_thread (struct ser_console_state *state) | |
482 | { | |
483 | /* Ask the thread to exit. */ | |
484 | SetEvent (state->exit_select); | |
485 | /* Wait until it does. */ | |
486 | WaitForSingleObject (state->thread, INFINITE); | |
487 | ||
488 | /* Destroy the events. */ | |
489 | CloseHandle (state->read_event); | |
490 | CloseHandle (state->except_event); | |
491 | CloseHandle (state->have_started); | |
492 | CloseHandle (state->have_stopped); | |
493 | CloseHandle (state->start_select); | |
494 | CloseHandle (state->stop_select); | |
495 | CloseHandle (state->exit_select); | |
496 | } | |
497 | ||
498 | /* Called by gdb_select to start the select thread indicated by STATE. | |
499 | This function does not return until the thread has started. */ | |
500 | static void | |
501 | start_select_thread (struct ser_console_state *state) | |
502 | { | |
503 | /* Ask the thread to start. */ | |
504 | SetEvent (state->start_select); | |
505 | /* Wait until it does. */ | |
506 | WaitForSingleObject (state->have_started, INFINITE); | |
507 | /* The thread is now started. */ | |
508 | state->thread_state = STS_STARTED; | |
509 | } | |
510 | ||
511 | /* Called by gdb_select to stop the select thread indicated by STATE. | |
512 | This function does not return until the thread has stopped. */ | |
513 | static void | |
514 | stop_select_thread (struct ser_console_state *state) | |
515 | { | |
516 | /* If the thread is already in the stopped state, we have nothing to | |
517 | do. Some of the wait_handle functions avoid calling | |
518 | start_select_thread if they notice activity on the relevant file | |
519 | descriptors. The wait_handle_done functions still call | |
520 | stop_select_thread -- but it is already stopped. */ | |
521 | if (state->thread_state != STS_STARTED) | |
522 | return; | |
523 | /* Ask the thread to stop. */ | |
524 | SetEvent (state->stop_select); | |
525 | /* Wait until it does. */ | |
526 | WaitForSingleObject (state->have_stopped, INFINITE); | |
527 | /* The thread is now stopped. */ | |
528 | state->thread_state = STS_STOPPED; | |
529 | } | |
530 | ||
0ea3f30e DJ |
531 | static DWORD WINAPI |
532 | console_select_thread (void *arg) | |
533 | { | |
cd78b7a1 | 534 | struct serial *scb = (struct serial *) arg; |
c3e2b812 DJ |
535 | struct ser_console_state *state; |
536 | int event_index; | |
0ea3f30e DJ |
537 | HANDLE h; |
538 | ||
cd78b7a1 | 539 | state = (struct ser_console_state *) scb->state; |
c3e2b812 | 540 | h = (HANDLE) _get_osfhandle (scb->fd); |
0ea3f30e DJ |
541 | |
542 | while (1) | |
543 | { | |
544 | HANDLE wait_events[2]; | |
545 | INPUT_RECORD record; | |
546 | DWORD n_records; | |
547 | ||
4577549b | 548 | select_thread_wait (state); |
c3e2b812 | 549 | |
4577549b DJ |
550 | while (1) |
551 | { | |
552 | wait_events[0] = state->stop_select; | |
553 | wait_events[1] = h; | |
0ea3f30e | 554 | |
3e43a32a MS |
555 | event_index = WaitForMultipleObjects (2, wait_events, |
556 | FALSE, INFINITE); | |
0ea3f30e | 557 | |
4577549b DJ |
558 | if (event_index == WAIT_OBJECT_0 |
559 | || WaitForSingleObject (state->stop_select, 0) == WAIT_OBJECT_0) | |
560 | break; | |
0ea3f30e | 561 | |
4577549b DJ |
562 | if (event_index != WAIT_OBJECT_0 + 1) |
563 | { | |
564 | /* Wait must have failed; assume an error has occured, e.g. | |
565 | the handle has been closed. */ | |
566 | SetEvent (state->except_event); | |
567 | break; | |
568 | } | |
0ea3f30e | 569 | |
4577549b DJ |
570 | /* We've got a pending event on the console. See if it's |
571 | of interest. */ | |
572 | if (!PeekConsoleInput (h, &record, 1, &n_records) || n_records != 1) | |
573 | { | |
574 | /* Something went wrong. Maybe the console is gone. */ | |
575 | SetEvent (state->except_event); | |
576 | break; | |
577 | } | |
0ea3f30e | 578 | |
4577549b | 579 | if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) |
c3e2b812 | 580 | { |
4577549b DJ |
581 | WORD keycode = record.Event.KeyEvent.wVirtualKeyCode; |
582 | ||
583 | /* Ignore events containing only control keys. We must | |
584 | recognize "enhanced" keys which we are interested in | |
585 | reading via getch, if they do not map to ASCII. But we | |
586 | do not want to report input available for e.g. the | |
587 | control key alone. */ | |
588 | ||
589 | if (record.Event.KeyEvent.uChar.AsciiChar != 0 | |
590 | || keycode == VK_PRIOR | |
591 | || keycode == VK_NEXT | |
592 | || keycode == VK_END | |
593 | || keycode == VK_HOME | |
594 | || keycode == VK_LEFT | |
595 | || keycode == VK_UP | |
596 | || keycode == VK_RIGHT | |
597 | || keycode == VK_DOWN | |
598 | || keycode == VK_INSERT | |
599 | || keycode == VK_DELETE) | |
600 | { | |
601 | /* This is really a keypress. */ | |
602 | SetEvent (state->read_event); | |
603 | break; | |
604 | } | |
c3e2b812 | 605 | } |
4577549b DJ |
606 | |
607 | /* Otherwise discard it and wait again. */ | |
608 | ReadConsoleInput (h, &record, 1, &n_records); | |
0ea3f30e DJ |
609 | } |
610 | ||
4577549b | 611 | SetEvent(state->have_stopped); |
0ea3f30e | 612 | } |
a32d7317 | 613 | return 0; |
0ea3f30e DJ |
614 | } |
615 | ||
616 | static int | |
617 | fd_is_pipe (int fd) | |
618 | { | |
619 | if (PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, NULL, NULL)) | |
620 | return 1; | |
621 | else | |
622 | return 0; | |
623 | } | |
624 | ||
7e71daaa JG |
625 | static int |
626 | fd_is_file (int fd) | |
627 | { | |
628 | if (GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_DISK) | |
629 | return 1; | |
630 | else | |
631 | return 0; | |
632 | } | |
633 | ||
0ea3f30e DJ |
634 | static DWORD WINAPI |
635 | pipe_select_thread (void *arg) | |
636 | { | |
cd78b7a1 | 637 | struct serial *scb = (struct serial *) arg; |
c3e2b812 DJ |
638 | struct ser_console_state *state; |
639 | int event_index; | |
0ea3f30e DJ |
640 | HANDLE h; |
641 | ||
cd78b7a1 | 642 | state = (struct ser_console_state *) scb->state; |
c3e2b812 | 643 | h = (HANDLE) _get_osfhandle (scb->fd); |
0ea3f30e DJ |
644 | |
645 | while (1) | |
646 | { | |
0ea3f30e DJ |
647 | DWORD n_avail; |
648 | ||
4577549b | 649 | select_thread_wait (state); |
c3e2b812 | 650 | |
4577549b DJ |
651 | /* Wait for something to happen on the pipe. */ |
652 | while (1) | |
0ea3f30e | 653 | { |
4577549b DJ |
654 | if (!PeekNamedPipe (h, NULL, 0, NULL, &n_avail, NULL)) |
655 | { | |
656 | SetEvent (state->except_event); | |
657 | break; | |
658 | } | |
0ea3f30e | 659 | |
4577549b DJ |
660 | if (n_avail > 0) |
661 | { | |
662 | SetEvent (state->read_event); | |
663 | break; | |
664 | } | |
0ea3f30e | 665 | |
4577549b DJ |
666 | /* Delay 10ms before checking again, but allow the stop |
667 | event to wake us. */ | |
668 | if (WaitForSingleObject (state->stop_select, 10) == WAIT_OBJECT_0) | |
669 | break; | |
670 | } | |
0ea3f30e | 671 | |
4577549b | 672 | SetEvent (state->have_stopped); |
0ea3f30e | 673 | } |
a32d7317 | 674 | return 0; |
0ea3f30e DJ |
675 | } |
676 | ||
7e71daaa JG |
677 | static DWORD WINAPI |
678 | file_select_thread (void *arg) | |
679 | { | |
cd78b7a1 | 680 | struct serial *scb = (struct serial *) arg; |
7e71daaa JG |
681 | struct ser_console_state *state; |
682 | int event_index; | |
683 | HANDLE h; | |
684 | ||
cd78b7a1 | 685 | state = (struct ser_console_state *) scb->state; |
7e71daaa JG |
686 | h = (HANDLE) _get_osfhandle (scb->fd); |
687 | ||
688 | while (1) | |
689 | { | |
4577549b | 690 | select_thread_wait (state); |
7e71daaa | 691 | |
3e43a32a MS |
692 | if (SetFilePointer (h, 0, NULL, FILE_CURRENT) |
693 | == INVALID_SET_FILE_POINTER) | |
4577549b DJ |
694 | SetEvent (state->except_event); |
695 | else | |
696 | SetEvent (state->read_event); | |
7e71daaa | 697 | |
4577549b | 698 | SetEvent (state->have_stopped); |
7e71daaa | 699 | } |
a32d7317 | 700 | return 0; |
7e71daaa JG |
701 | } |
702 | ||
0ea3f30e DJ |
703 | static void |
704 | ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
705 | { | |
cd78b7a1 | 706 | struct ser_console_state *state = (struct ser_console_state *) scb->state; |
0ea3f30e DJ |
707 | |
708 | if (state == NULL) | |
709 | { | |
4577549b | 710 | thread_fn_type thread_fn; |
0ea3f30e DJ |
711 | int is_tty; |
712 | ||
713 | is_tty = isatty (scb->fd); | |
7e71daaa | 714 | if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd)) |
0ea3f30e DJ |
715 | { |
716 | *read = NULL; | |
717 | *except = NULL; | |
718 | return; | |
719 | } | |
720 | ||
8d749320 | 721 | state = XCNEW (struct ser_console_state); |
0ea3f30e DJ |
722 | scb->state = state; |
723 | ||
0ea3f30e | 724 | if (is_tty) |
4577549b | 725 | thread_fn = console_select_thread; |
7e71daaa | 726 | else if (fd_is_pipe (scb->fd)) |
4577549b | 727 | thread_fn = pipe_select_thread; |
7e71daaa | 728 | else |
4577549b DJ |
729 | thread_fn = file_select_thread; |
730 | ||
731 | create_select_thread (thread_fn, scb, state); | |
0ea3f30e DJ |
732 | } |
733 | ||
c3e2b812 DJ |
734 | *read = state->read_event; |
735 | *except = state->except_event; | |
736 | ||
737 | /* Start from a blank state. */ | |
0ea3f30e DJ |
738 | ResetEvent (state->read_event); |
739 | ResetEvent (state->except_event); | |
c3e2b812 DJ |
740 | ResetEvent (state->stop_select); |
741 | ||
742 | /* First check for a key already in the buffer. If there is one, | |
743 | we don't need a thread. This also catches the second key of | |
744 | multi-character returns from getch, for instance for arrow | |
745 | keys. The second half is in a C library internal buffer, | |
746 | and PeekConsoleInput will not find it. */ | |
747 | if (_kbhit ()) | |
748 | { | |
749 | SetEvent (state->read_event); | |
750 | return; | |
751 | } | |
0ea3f30e | 752 | |
c3e2b812 | 753 | /* Otherwise, start the select thread. */ |
4577549b | 754 | start_select_thread (state); |
c3e2b812 | 755 | } |
0ea3f30e | 756 | |
c3e2b812 DJ |
757 | static void |
758 | ser_console_done_wait_handle (struct serial *scb) | |
759 | { | |
cd78b7a1 | 760 | struct ser_console_state *state = (struct ser_console_state *) scb->state; |
c3e2b812 DJ |
761 | |
762 | if (state == NULL) | |
763 | return; | |
764 | ||
4577549b | 765 | stop_select_thread (state); |
0ea3f30e DJ |
766 | } |
767 | ||
768 | static void | |
769 | ser_console_close (struct serial *scb) | |
770 | { | |
cd78b7a1 | 771 | struct ser_console_state *state = (struct ser_console_state *) scb->state; |
0ea3f30e DJ |
772 | |
773 | if (scb->state) | |
774 | { | |
4577549b | 775 | destroy_select_thread (state); |
0ea3f30e DJ |
776 | xfree (scb->state); |
777 | } | |
778 | } | |
779 | ||
780 | struct ser_console_ttystate | |
781 | { | |
782 | int is_a_tty; | |
783 | }; | |
784 | ||
785 | static serial_ttystate | |
786 | ser_console_get_tty_state (struct serial *scb) | |
787 | { | |
788 | if (isatty (scb->fd)) | |
789 | { | |
790 | struct ser_console_ttystate *state; | |
433759f7 | 791 | |
8d749320 | 792 | state = XNEW (struct ser_console_ttystate); |
0ea3f30e DJ |
793 | state->is_a_tty = 1; |
794 | return state; | |
795 | } | |
796 | else | |
797 | return NULL; | |
798 | } | |
799 | ||
5f1fb6dc JB |
800 | struct pipe_state |
801 | { | |
802 | /* Since we use the pipe_select_thread for our select emulation, | |
803 | we need to place the state structure it requires at the front | |
804 | of our state. */ | |
805 | struct ser_console_state wait; | |
806 | ||
807 | /* The pex obj for our (one-stage) pipeline. */ | |
808 | struct pex_obj *pex; | |
809 | ||
810 | /* Streams for the pipeline's input and output. */ | |
811 | FILE *input, *output; | |
812 | }; | |
813 | ||
814 | static struct pipe_state * | |
815 | make_pipe_state (void) | |
816 | { | |
8d749320 | 817 | struct pipe_state *ps = XCNEW (struct pipe_state); |
5f1fb6dc | 818 | |
5f1fb6dc JB |
819 | ps->wait.read_event = INVALID_HANDLE_VALUE; |
820 | ps->wait.except_event = INVALID_HANDLE_VALUE; | |
821 | ps->wait.start_select = INVALID_HANDLE_VALUE; | |
822 | ps->wait.stop_select = INVALID_HANDLE_VALUE; | |
823 | ||
824 | return ps; | |
825 | } | |
826 | ||
827 | static void | |
828 | free_pipe_state (struct pipe_state *ps) | |
829 | { | |
830 | int saved_errno = errno; | |
831 | ||
832 | if (ps->wait.read_event != INVALID_HANDLE_VALUE) | |
4577549b | 833 | destroy_select_thread (&ps->wait); |
5f1fb6dc JB |
834 | |
835 | /* Close the pipe to the child. We must close the pipe before | |
836 | calling pex_free because pex_free will wait for the child to exit | |
837 | and the child will not exit until the pipe is closed. */ | |
838 | if (ps->input) | |
839 | fclose (ps->input); | |
840 | if (ps->pex) | |
58f07bae PA |
841 | { |
842 | pex_free (ps->pex); | |
843 | /* pex_free closes ps->output. */ | |
844 | } | |
845 | else if (ps->output) | |
846 | fclose (ps->output); | |
5f1fb6dc JB |
847 | |
848 | xfree (ps); | |
849 | ||
850 | errno = saved_errno; | |
851 | } | |
852 | ||
853 | static void | |
854 | cleanup_pipe_state (void *untyped) | |
855 | { | |
cd78b7a1 | 856 | struct pipe_state *ps = (struct pipe_state *) untyped; |
5f1fb6dc JB |
857 | |
858 | free_pipe_state (ps); | |
859 | } | |
860 | ||
861 | static int | |
862 | pipe_windows_open (struct serial *scb, const char *name) | |
863 | { | |
ef7723eb | 864 | struct pipe_state *ps; |
65cc4390 | 865 | FILE *pex_stderr; |
efdb2a86 PA |
866 | char **argv; |
867 | struct cleanup *back_to; | |
ef7723eb | 868 | |
d1a41061 PP |
869 | if (name == NULL) |
870 | error_no_arg (_("child command")); | |
871 | ||
efdb2a86 PA |
872 | argv = gdb_buildargv (name); |
873 | back_to = make_cleanup_freeargv (argv); | |
d1a41061 | 874 | |
5f1fb6dc | 875 | if (! argv[0] || argv[0][0] == '\0') |
a73c6dcd | 876 | error (_("missing child command")); |
5f1fb6dc | 877 | |
ef7723eb | 878 | ps = make_pipe_state (); |
5f1fb6dc JB |
879 | make_cleanup (cleanup_pipe_state, ps); |
880 | ||
881 | ps->pex = pex_init (PEX_USE_PIPES, "target remote pipe", NULL); | |
882 | if (! ps->pex) | |
883 | goto fail; | |
884 | ps->input = pex_input_pipe (ps->pex, 1); | |
885 | if (! ps->input) | |
886 | goto fail; | |
887 | ||
888 | { | |
889 | int err; | |
890 | const char *err_msg | |
65cc4390 VP |
891 | = pex_run (ps->pex, PEX_SEARCH | PEX_BINARY_INPUT | PEX_BINARY_OUTPUT |
892 | | PEX_STDERR_TO_PIPE, | |
5f1fb6dc JB |
893 | argv[0], argv, NULL, NULL, |
894 | &err); | |
895 | ||
896 | if (err_msg) | |
897 | { | |
898 | /* Our caller expects us to return -1, but all they'll do with | |
899 | it generally is print the message based on errno. We have | |
900 | all the same information here, plus err_msg provided by | |
901 | pex_run, so we just raise the error here. */ | |
902 | if (err) | |
a73c6dcd | 903 | error (_("error starting child process '%s': %s: %s"), |
5f1fb6dc JB |
904 | name, err_msg, safe_strerror (err)); |
905 | else | |
a73c6dcd | 906 | error (_("error starting child process '%s': %s"), |
5f1fb6dc JB |
907 | name, err_msg); |
908 | } | |
909 | } | |
910 | ||
911 | ps->output = pex_read_output (ps->pex, 1); | |
912 | if (! ps->output) | |
913 | goto fail; | |
5f1fb6dc | 914 | scb->fd = fileno (ps->output); |
65cc4390 VP |
915 | |
916 | pex_stderr = pex_read_err (ps->pex, 1); | |
917 | if (! pex_stderr) | |
918 | goto fail; | |
919 | scb->error_fd = fileno (pex_stderr); | |
920 | ||
5f1fb6dc JB |
921 | scb->state = (void *) ps; |
922 | ||
923 | discard_cleanups (back_to); | |
924 | return 0; | |
925 | ||
926 | fail: | |
927 | do_cleanups (back_to); | |
928 | return -1; | |
929 | } | |
930 | ||
58f07bae PA |
931 | static int |
932 | pipe_windows_fdopen (struct serial *scb, int fd) | |
933 | { | |
934 | struct pipe_state *ps; | |
935 | ||
936 | ps = make_pipe_state (); | |
937 | ||
938 | ps->input = fdopen (fd, "r+"); | |
939 | if (! ps->input) | |
940 | goto fail; | |
941 | ||
942 | ps->output = fdopen (fd, "r+"); | |
943 | if (! ps->output) | |
944 | goto fail; | |
945 | ||
946 | scb->fd = fd; | |
947 | scb->state = (void *) ps; | |
948 | ||
949 | return 0; | |
950 | ||
951 | fail: | |
952 | free_pipe_state (ps); | |
953 | return -1; | |
954 | } | |
5f1fb6dc JB |
955 | |
956 | static void | |
957 | pipe_windows_close (struct serial *scb) | |
958 | { | |
cd78b7a1 | 959 | struct pipe_state *ps = (struct pipe_state *) scb->state; |
5f1fb6dc JB |
960 | |
961 | /* In theory, we should try to kill the subprocess here, but the pex | |
962 | interface doesn't give us enough information to do that. Usually | |
963 | closing the input pipe will get the message across. */ | |
964 | ||
965 | free_pipe_state (ps); | |
966 | } | |
967 | ||
968 | ||
969 | static int | |
970 | pipe_windows_read (struct serial *scb, size_t count) | |
971 | { | |
4998c1df | 972 | HANDLE pipeline_out = (HANDLE) _get_osfhandle (scb->fd); |
ef7723eb VP |
973 | DWORD available; |
974 | DWORD bytes_read; | |
975 | ||
5f1fb6dc JB |
976 | if (pipeline_out == INVALID_HANDLE_VALUE) |
977 | return -1; | |
978 | ||
5f1fb6dc JB |
979 | if (! PeekNamedPipe (pipeline_out, NULL, 0, NULL, &available, NULL)) |
980 | return -1; | |
981 | ||
982 | if (count > available) | |
983 | count = available; | |
984 | ||
5f1fb6dc JB |
985 | if (! ReadFile (pipeline_out, scb->buf, count, &bytes_read, NULL)) |
986 | return -1; | |
987 | ||
988 | return bytes_read; | |
989 | } | |
990 | ||
991 | ||
992 | static int | |
993 | pipe_windows_write (struct serial *scb, const void *buf, size_t count) | |
994 | { | |
cd78b7a1 | 995 | struct pipe_state *ps = (struct pipe_state *) scb->state; |
ef7723eb VP |
996 | HANDLE pipeline_in; |
997 | DWORD written; | |
998 | ||
5f1fb6dc JB |
999 | int pipeline_in_fd = fileno (ps->input); |
1000 | if (pipeline_in_fd < 0) | |
1001 | return -1; | |
1002 | ||
ef7723eb | 1003 | pipeline_in = (HANDLE) _get_osfhandle (pipeline_in_fd); |
5f1fb6dc JB |
1004 | if (pipeline_in == INVALID_HANDLE_VALUE) |
1005 | return -1; | |
1006 | ||
5f1fb6dc JB |
1007 | if (! WriteFile (pipeline_in, buf, count, &written, NULL)) |
1008 | return -1; | |
1009 | ||
1010 | return written; | |
1011 | } | |
1012 | ||
1013 | ||
1014 | static void | |
1015 | pipe_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1016 | { | |
cd78b7a1 | 1017 | struct pipe_state *ps = (struct pipe_state *) scb->state; |
5f1fb6dc JB |
1018 | |
1019 | /* Have we allocated our events yet? */ | |
1020 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
4577549b DJ |
1021 | /* Start the thread. */ |
1022 | create_select_thread (pipe_select_thread, scb, &ps->wait); | |
5f1fb6dc | 1023 | |
774a49c0 DJ |
1024 | *read = ps->wait.read_event; |
1025 | *except = ps->wait.except_event; | |
1026 | ||
1027 | /* Start from a blank state. */ | |
5f1fb6dc JB |
1028 | ResetEvent (ps->wait.read_event); |
1029 | ResetEvent (ps->wait.except_event); | |
774a49c0 | 1030 | ResetEvent (ps->wait.stop_select); |
5f1fb6dc | 1031 | |
4577549b | 1032 | start_select_thread (&ps->wait); |
5f1fb6dc JB |
1033 | } |
1034 | ||
774a49c0 DJ |
1035 | static void |
1036 | pipe_done_wait_handle (struct serial *scb) | |
1037 | { | |
cd78b7a1 | 1038 | struct pipe_state *ps = (struct pipe_state *) scb->state; |
774a49c0 DJ |
1039 | |
1040 | /* Have we allocated our events yet? */ | |
1041 | if (ps->wait.read_event == INVALID_HANDLE_VALUE) | |
1042 | return; | |
1043 | ||
4577549b | 1044 | stop_select_thread (&ps->wait); |
774a49c0 | 1045 | } |
5f1fb6dc | 1046 | |
65cc4390 VP |
1047 | static int |
1048 | pipe_avail (struct serial *scb, int fd) | |
1049 | { | |
1050 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
1051 | DWORD numBytes; | |
1052 | BOOL r = PeekNamedPipe (h, NULL, 0, NULL, &numBytes, NULL); | |
433759f7 | 1053 | |
65cc4390 VP |
1054 | if (r == FALSE) |
1055 | numBytes = 0; | |
1056 | return numBytes; | |
1057 | } | |
1058 | ||
58f07bae PA |
1059 | int |
1060 | gdb_pipe (int pdes[2]) | |
1061 | { | |
1062 | if (_pipe (pdes, 512, _O_BINARY | _O_NOINHERIT) == -1) | |
1063 | return -1; | |
1064 | return 0; | |
1065 | } | |
1066 | ||
0ea3f30e DJ |
1067 | struct net_windows_state |
1068 | { | |
4577549b DJ |
1069 | struct ser_console_state base; |
1070 | ||
0ea3f30e DJ |
1071 | HANDLE sock_event; |
1072 | }; | |
1073 | ||
364fe1f7 PA |
1074 | /* Check whether the socket has any pending data to be read. If so, |
1075 | set the select thread's read event. On error, set the select | |
1076 | thread's except event. If any event was set, return true, | |
1077 | otherwise return false. */ | |
1078 | ||
1079 | static int | |
1080 | net_windows_socket_check_pending (struct serial *scb) | |
1081 | { | |
cd78b7a1 | 1082 | struct net_windows_state *state = (struct net_windows_state *) scb->state; |
364fe1f7 PA |
1083 | unsigned long available; |
1084 | ||
1085 | if (ioctlsocket (scb->fd, FIONREAD, &available) != 0) | |
1086 | { | |
1087 | /* The socket closed, or some other error. */ | |
1088 | SetEvent (state->base.except_event); | |
1089 | return 1; | |
1090 | } | |
1091 | else if (available > 0) | |
1092 | { | |
1093 | SetEvent (state->base.read_event); | |
1094 | return 1; | |
1095 | } | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
0ea3f30e DJ |
1100 | static DWORD WINAPI |
1101 | net_windows_select_thread (void *arg) | |
1102 | { | |
cd78b7a1 | 1103 | struct serial *scb = (struct serial *) arg; |
4577549b | 1104 | struct net_windows_state *state; |
c3e2b812 | 1105 | int event_index; |
0ea3f30e | 1106 | |
cd78b7a1 | 1107 | state = (struct net_windows_state *) scb->state; |
0ea3f30e DJ |
1108 | |
1109 | while (1) | |
1110 | { | |
1111 | HANDLE wait_events[2]; | |
1112 | WSANETWORKEVENTS events; | |
1113 | ||
4577549b | 1114 | select_thread_wait (&state->base); |
c3e2b812 | 1115 | |
4577549b | 1116 | wait_events[0] = state->base.stop_select; |
0ea3f30e DJ |
1117 | wait_events[1] = state->sock_event; |
1118 | ||
364fe1f7 PA |
1119 | /* Wait for something to happen on the socket. */ |
1120 | while (1) | |
0ea3f30e | 1121 | { |
364fe1f7 PA |
1122 | event_index = WaitForMultipleObjects (2, wait_events, FALSE, INFINITE); |
1123 | ||
1124 | if (event_index == WAIT_OBJECT_0 | |
1125 | || WaitForSingleObject (state->base.stop_select, 0) == WAIT_OBJECT_0) | |
1126 | { | |
1127 | /* We have been requested to stop. */ | |
1128 | break; | |
1129 | } | |
1130 | ||
1131 | if (event_index != WAIT_OBJECT_0 + 1) | |
1132 | { | |
1133 | /* Some error has occured. Assume that this is an error | |
1134 | condition. */ | |
1135 | SetEvent (state->base.except_event); | |
1136 | break; | |
1137 | } | |
1138 | ||
4577549b DJ |
1139 | /* Enumerate the internal network events, and reset the |
1140 | object that signalled us to catch the next event. */ | |
364fe1f7 PA |
1141 | if (WSAEnumNetworkEvents (scb->fd, state->sock_event, &events) != 0) |
1142 | { | |
1143 | /* Something went wrong. Maybe the socket is gone. */ | |
1144 | SetEvent (state->base.except_event); | |
1145 | break; | |
1146 | } | |
1147 | ||
4577549b | 1148 | if (events.lNetworkEvents & FD_READ) |
364fe1f7 PA |
1149 | { |
1150 | if (net_windows_socket_check_pending (scb)) | |
1151 | break; | |
1152 | ||
1153 | /* Spurious wakeup. That is, the socket's event was | |
1154 | signalled before we last called recv. */ | |
1155 | } | |
1156 | ||
4577549b | 1157 | if (events.lNetworkEvents & FD_CLOSE) |
364fe1f7 PA |
1158 | { |
1159 | SetEvent (state->base.except_event); | |
1160 | break; | |
1161 | } | |
0ea3f30e DJ |
1162 | } |
1163 | ||
4577549b | 1164 | SetEvent (state->base.have_stopped); |
0ea3f30e | 1165 | } |
364fe1f7 | 1166 | return 0; |
0ea3f30e DJ |
1167 | } |
1168 | ||
1169 | static void | |
1170 | net_windows_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) | |
1171 | { | |
cd78b7a1 | 1172 | struct net_windows_state *state = (struct net_windows_state *) scb->state; |
0ea3f30e | 1173 | |
c3e2b812 | 1174 | /* Start from a clean slate. */ |
4577549b DJ |
1175 | ResetEvent (state->base.read_event); |
1176 | ResetEvent (state->base.except_event); | |
1177 | ResetEvent (state->base.stop_select); | |
0ea3f30e | 1178 | |
4577549b DJ |
1179 | *read = state->base.read_event; |
1180 | *except = state->base.except_event; | |
c3e2b812 | 1181 | |
364fe1f7 PA |
1182 | /* Check any pending events. Otherwise, start the select |
1183 | thread. */ | |
1184 | if (!net_windows_socket_check_pending (scb)) | |
1185 | start_select_thread (&state->base); | |
c3e2b812 DJ |
1186 | } |
1187 | ||
1188 | static void | |
1189 | net_windows_done_wait_handle (struct serial *scb) | |
1190 | { | |
cd78b7a1 | 1191 | struct net_windows_state *state = (struct net_windows_state *) scb->state; |
c3e2b812 | 1192 | |
4577549b | 1193 | stop_select_thread (&state->base); |
0ea3f30e DJ |
1194 | } |
1195 | ||
1196 | static int | |
1197 | net_windows_open (struct serial *scb, const char *name) | |
1198 | { | |
1199 | struct net_windows_state *state; | |
1200 | int ret; | |
1201 | DWORD threadId; | |
1202 | ||
1203 | ret = net_open (scb, name); | |
1204 | if (ret != 0) | |
1205 | return ret; | |
1206 | ||
8d749320 | 1207 | state = XCNEW (struct net_windows_state); |
0ea3f30e DJ |
1208 | scb->state = state; |
1209 | ||
0ea3f30e DJ |
1210 | /* Associate an event with the socket. */ |
1211 | state->sock_event = CreateEvent (0, TRUE, FALSE, 0); | |
1212 | WSAEventSelect (scb->fd, state->sock_event, FD_READ | FD_CLOSE); | |
1213 | ||
4577549b DJ |
1214 | /* Start the thread. */ |
1215 | create_select_thread (net_windows_select_thread, scb, &state->base); | |
0ea3f30e DJ |
1216 | |
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | ||
1221 | static void | |
1222 | net_windows_close (struct serial *scb) | |
1223 | { | |
cd78b7a1 | 1224 | struct net_windows_state *state = (struct net_windows_state *) scb->state; |
0ea3f30e | 1225 | |
4577549b | 1226 | destroy_select_thread (&state->base); |
0ea3f30e DJ |
1227 | CloseHandle (state->sock_event); |
1228 | ||
1229 | xfree (scb->state); | |
1230 | ||
1231 | net_close (scb); | |
1232 | } | |
1233 | ||
12e8c7d7 TT |
1234 | /* The serial port driver. */ |
1235 | ||
1236 | static const struct serial_ops hardwire_ops = | |
1237 | { | |
1238 | "hardwire", | |
1239 | ser_windows_open, | |
1240 | ser_windows_close, | |
1241 | NULL, | |
1242 | ser_base_readchar, | |
1243 | ser_base_write, | |
1244 | ser_windows_flush_output, | |
1245 | ser_windows_flush_input, | |
1246 | ser_windows_send_break, | |
1247 | ser_windows_raw, | |
1248 | /* These are only used for stdin; we do not need them for serial | |
1249 | ports, so supply the standard dummies. */ | |
1250 | ser_base_get_tty_state, | |
1251 | ser_base_copy_tty_state, | |
1252 | ser_base_set_tty_state, | |
1253 | ser_base_print_tty_state, | |
1254 | ser_base_noflush_set_tty_state, | |
1255 | ser_windows_setbaudrate, | |
1256 | ser_windows_setstopbits, | |
236af5e3 | 1257 | ser_windows_setparity, |
12e8c7d7 TT |
1258 | ser_windows_drain_output, |
1259 | ser_base_async, | |
1260 | ser_windows_read_prim, | |
1261 | ser_windows_write_prim, | |
1262 | NULL, | |
1263 | ser_windows_wait_handle | |
1264 | }; | |
1265 | ||
1266 | /* The dummy serial driver used for terminals. We only provide the | |
1267 | TTY-related methods. */ | |
1268 | ||
1269 | static const struct serial_ops tty_ops = | |
1270 | { | |
1271 | "terminal", | |
1272 | NULL, | |
1273 | ser_console_close, | |
1274 | NULL, | |
1275 | NULL, | |
1276 | NULL, | |
1277 | NULL, | |
1278 | NULL, | |
1279 | NULL, | |
1280 | NULL, | |
1281 | ser_console_get_tty_state, | |
1282 | ser_base_copy_tty_state, | |
1283 | ser_base_set_tty_state, | |
1284 | ser_base_print_tty_state, | |
1285 | ser_base_noflush_set_tty_state, | |
1286 | NULL, | |
1287 | NULL, | |
236af5e3 | 1288 | NULL, |
12e8c7d7 TT |
1289 | ser_base_drain_output, |
1290 | NULL, | |
1291 | NULL, | |
1292 | NULL, | |
1293 | NULL, | |
1294 | ser_console_wait_handle, | |
1295 | ser_console_done_wait_handle | |
1296 | }; | |
1297 | ||
1298 | /* The pipe interface. */ | |
1299 | ||
1300 | static const struct serial_ops pipe_ops = | |
1301 | { | |
1302 | "pipe", | |
1303 | pipe_windows_open, | |
1304 | pipe_windows_close, | |
1305 | pipe_windows_fdopen, | |
1306 | ser_base_readchar, | |
1307 | ser_base_write, | |
1308 | ser_base_flush_output, | |
1309 | ser_base_flush_input, | |
1310 | ser_base_send_break, | |
1311 | ser_base_raw, | |
1312 | ser_base_get_tty_state, | |
1313 | ser_base_copy_tty_state, | |
1314 | ser_base_set_tty_state, | |
1315 | ser_base_print_tty_state, | |
1316 | ser_base_noflush_set_tty_state, | |
1317 | ser_base_setbaudrate, | |
1318 | ser_base_setstopbits, | |
236af5e3 | 1319 | ser_base_setparity, |
12e8c7d7 TT |
1320 | ser_base_drain_output, |
1321 | ser_base_async, | |
1322 | pipe_windows_read, | |
1323 | pipe_windows_write, | |
1324 | pipe_avail, | |
1325 | pipe_wait_handle, | |
1326 | pipe_done_wait_handle | |
1327 | }; | |
1328 | ||
1329 | /* The TCP/UDP socket driver. */ | |
1330 | ||
1331 | static const struct serial_ops tcp_ops = | |
1332 | { | |
1333 | "tcp", | |
1334 | net_windows_open, | |
1335 | net_windows_close, | |
1336 | NULL, | |
1337 | ser_base_readchar, | |
1338 | ser_base_write, | |
1339 | ser_base_flush_output, | |
1340 | ser_base_flush_input, | |
1341 | ser_tcp_send_break, | |
1342 | ser_base_raw, | |
1343 | ser_base_get_tty_state, | |
1344 | ser_base_copy_tty_state, | |
1345 | ser_base_set_tty_state, | |
1346 | ser_base_print_tty_state, | |
1347 | ser_base_noflush_set_tty_state, | |
1348 | ser_base_setbaudrate, | |
1349 | ser_base_setstopbits, | |
236af5e3 | 1350 | ser_base_setparity, |
12e8c7d7 TT |
1351 | ser_base_drain_output, |
1352 | ser_base_async, | |
1353 | net_read_prim, | |
1354 | net_write_prim, | |
1355 | NULL, | |
1356 | net_windows_wait_handle, | |
1357 | net_windows_done_wait_handle | |
1358 | }; | |
1359 | ||
0ea3f30e DJ |
1360 | void |
1361 | _initialize_ser_windows (void) | |
1362 | { | |
1363 | WSADATA wsa_data; | |
1364 | struct serial_ops *ops; | |
1365 | ||
4af53f97 PM |
1366 | HMODULE hm = NULL; |
1367 | ||
1368 | /* First find out if kernel32 exports CancelIo function. */ | |
1369 | hm = LoadLibrary ("kernel32.dll"); | |
1370 | if (hm) | |
1371 | { | |
cd78b7a1 | 1372 | CancelIo = (CancelIo_ftype *) GetProcAddress (hm, "CancelIo"); |
4af53f97 PM |
1373 | FreeLibrary (hm); |
1374 | } | |
1375 | else | |
1376 | CancelIo = NULL; | |
0ea3f30e | 1377 | |
12e8c7d7 TT |
1378 | serial_add_interface (&hardwire_ops); |
1379 | serial_add_interface (&tty_ops); | |
1380 | serial_add_interface (&pipe_ops); | |
5f1fb6dc | 1381 | |
0ea3f30e DJ |
1382 | /* If WinSock works, register the TCP/UDP socket driver. */ |
1383 | ||
1384 | if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0) | |
1385 | /* WinSock is unavailable. */ | |
1386 | return; | |
1387 | ||
12e8c7d7 | 1388 | serial_add_interface (&tcp_ops); |
0ea3f30e | 1389 | } |