… | |
… | |
4 | /* WARNING |
4 | /* WARNING |
5 | * This header file is a shared resource between many modules. |
5 | * This header file is a shared resource between many modules. |
6 | */ |
6 | */ |
7 | |
7 | |
8 | #include <signal.h> |
8 | #include <signal.h> |
|
|
9 | #include <errno.h> |
9 | |
10 | |
10 | #ifndef _WIN32 |
11 | #ifndef _WIN32 |
11 | # include <poll.h> |
12 | # include <poll.h> |
12 | #endif |
13 | #endif |
13 | |
14 | |
… | |
… | |
193 | S_GENSUB_ARG = arg; |
194 | S_GENSUB_ARG = arg; |
194 | |
195 | |
195 | return newRV_noinc ((SV *)cv); |
196 | return newRV_noinc ((SV *)cv); |
196 | } |
197 | } |
197 | |
198 | |
|
|
199 | /*****************************************************************************/ |
198 | /** portable pipe/socketpair */ |
200 | /* portable pipe/socketpair */ |
199 | |
201 | |
200 | #ifdef USE_SOCKETS_AS_HANDLES |
202 | #ifdef USE_SOCKETS_AS_HANDLES |
201 | # define S_TO_SOCKET(x) (win32_get_osfhandle (x)) |
203 | # define S_TO_HANDLE(x) ((HANDLE)win32_get_osfhandle (x)) |
202 | #else |
204 | #else |
203 | # define S_TO_SOCKET(x) (x) |
205 | # define S_TO_HANDLE(x) ((HANDLE)x) |
204 | #endif |
206 | #endif |
205 | |
207 | |
206 | #ifdef _WIN32 |
208 | #ifdef _WIN32 |
207 | /* taken almost verbatim from libev's ev_win32.c */ |
209 | /* taken almost verbatim from libev's ev_win32.c */ |
208 | /* oh, the humanity! */ |
210 | /* oh, the humanity! */ |
209 | static int |
211 | static int |
210 | s_pipe (int filedes [2]) |
212 | s_pipe (int filedes [2]) |
211 | { |
213 | { |
|
|
214 | dTHX; |
|
|
215 | |
212 | struct sockaddr_in addr = { 0 }; |
216 | struct sockaddr_in addr = { 0 }; |
213 | int addr_size = sizeof (addr); |
217 | int addr_size = sizeof (addr); |
214 | struct sockaddr_in adr2; |
218 | struct sockaddr_in adr2; |
215 | int adr2_size = sizeof (adr2); |
219 | int adr2_size = sizeof (adr2); |
216 | SOCKET listener; |
220 | SOCKET listener; |
… | |
… | |
291 | #define s_socketpair(domain,type,protocol,filedes) s_pipe (filedes) |
295 | #define s_socketpair(domain,type,protocol,filedes) s_pipe (filedes) |
292 | |
296 | |
293 | static int |
297 | static int |
294 | s_fd_blocking (int fd, int blocking) |
298 | s_fd_blocking (int fd, int blocking) |
295 | { |
299 | { |
296 | blocking = !blocking; |
300 | u_long nonblocking = !blocking; |
297 | |
301 | |
298 | return ioctlsocket (S_TO_SOCKET (fd), FIONBIO, &blocking); |
302 | return ioctlsocket ((SOCKET)S_TO_HANDLE (fd), FIONBIO, &nonblocking); |
299 | } |
303 | } |
300 | |
304 | |
301 | #define s_fd_prepare(fd) s_fd_blocking (fd, 0) |
305 | #define s_fd_prepare(fd) s_fd_blocking (fd, 0) |
302 | |
306 | |
303 | #else |
307 | #else |
… | |
… | |
335 | #endif |
339 | #endif |
336 | |
340 | |
337 | typedef struct { |
341 | typedef struct { |
338 | int fd[2]; /* read, write fd, might be equal */ |
342 | int fd[2]; /* read, write fd, might be equal */ |
339 | int len; /* write length (1 pipe/socket, 8 eventfd) */ |
343 | int len; /* write length (1 pipe/socket, 8 eventfd) */ |
340 | volatile sig_atomic_t sent; |
|
|
341 | } s_epipe; |
344 | } s_epipe; |
342 | |
345 | |
343 | static int |
346 | static int |
344 | s_epipe_new (s_epipe *epp) |
347 | s_epipe_new (s_epipe *epp) |
345 | { |
348 | { |
… | |
… | |
358 | return -1; |
361 | return -1; |
359 | |
362 | |
360 | if (s_fd_prepare (ep.fd [0]) |
363 | if (s_fd_prepare (ep.fd [0]) |
361 | || s_fd_prepare (ep.fd [1])) |
364 | || s_fd_prepare (ep.fd [1])) |
362 | { |
365 | { |
|
|
366 | dTHX; |
|
|
367 | |
363 | close (ep.fd [0]); |
368 | close (ep.fd [0]); |
364 | close (ep.fd [1]); |
369 | close (ep.fd [1]); |
365 | return -1; |
370 | return -1; |
366 | } |
371 | } |
367 | |
372 | |
368 | ep.len = 1; |
373 | ep.len = 1; |
369 | } |
374 | } |
370 | |
375 | |
371 | ep.sent = 0; |
|
|
372 | *epp = ep; |
376 | *epp = ep; |
373 | return 0; |
377 | return 0; |
374 | } |
378 | } |
375 | |
379 | |
376 | static void |
380 | static void |
377 | s_epipe_destroy (s_epipe *epp) |
381 | s_epipe_destroy (s_epipe *epp) |
378 | { |
382 | { |
|
|
383 | dTHX; |
|
|
384 | |
379 | close (epp->fd [0]); |
385 | close (epp->fd [0]); |
380 | |
386 | |
381 | if (epp->fd [1] != epp->fd [0]) |
387 | if (epp->fd [1] != epp->fd [0]) |
382 | close (epp->fd [1]); |
388 | close (epp->fd [1]); |
383 | |
389 | |
… | |
… | |
385 | } |
391 | } |
386 | |
392 | |
387 | static void |
393 | static void |
388 | s_epipe_signal (s_epipe *epp) |
394 | s_epipe_signal (s_epipe *epp) |
389 | { |
395 | { |
390 | if (epp->sent) |
|
|
391 | return; |
|
|
392 | |
|
|
393 | epp->sent = 1; |
|
|
394 | #ifdef _WIN32 |
396 | #ifdef _WIN32 |
395 | send (epp->fd [1], epp, 1); |
397 | /* perl overrides send with a function that crashes in other threads. |
|
|
398 | * unfortunately, it overrides it with an argument-less macro, so |
|
|
399 | * there is no way to force usage of the real send function. |
|
|
400 | * incompetent windows programmers - is this redundant? |
|
|
401 | */ |
|
|
402 | DWORD dummy; |
|
|
403 | WriteFile (S_TO_HANDLE (epp->fd [1]), (LPCVOID)&dummy, 1, &dummy, 0); |
396 | #else |
404 | #else |
397 | static uint64_t counter = 1; |
405 | static uint64_t counter = 1; |
|
|
406 | /* some modules accept fd's from outside, support eventfd here */ |
|
|
407 | if (write (epp->fd [1], &counter, epp->len) < 0 |
|
|
408 | && errno == EINVAL |
|
|
409 | && epp->len != 8) |
398 | write (epp->fd [1], &counter, epp->len); |
410 | write (epp->fd [1], &counter, (epp->len = 8)); |
399 | #endif |
411 | #endif |
400 | } |
412 | } |
401 | |
413 | |
402 | static void |
414 | static void |
403 | s_epipe_drain (s_epipe *epp) |
415 | s_epipe_drain (s_epipe *epp) |
404 | { |
416 | { |
|
|
417 | dTHX; |
405 | char buf [9]; |
418 | char buf [9]; |
406 | |
419 | |
407 | #ifdef _WIN32 |
420 | #ifdef _WIN32 |
408 | PerlSock_recv (epp->fd [0], buf, sizeof (buf), 0); |
421 | recv (epp->fd [0], buf, sizeof (buf), 0); |
409 | #else |
422 | #else |
410 | read (epp->fd [0], buf, sizeof (buf)); |
423 | read (epp->fd [0], buf, sizeof (buf)); |
411 | #endif |
424 | #endif |
412 | |
|
|
413 | epp->sent = 0; |
|
|
414 | } |
425 | } |
415 | |
426 | |
416 | /* like new, but dups over old */ |
427 | /* like new, but dups over old */ |
417 | static int |
428 | static int |
418 | s_epipe_renew (s_epipe *epp) |
429 | s_epipe_renew (s_epipe *epp) |
419 | { |
430 | { |
|
|
431 | dTHX; |
420 | s_epipe epn; |
432 | s_epipe epn; |
421 | |
433 | |
422 | if (epp->fd [1] != epp->fd [0]) |
434 | if (epp->fd [1] != epp->fd [0]) |
423 | close (epp->fd [1]); |
435 | close (epp->fd [1]); |
424 | |
436 | |
425 | if (s_epipe_new (&epn)) |
437 | if (s_epipe_new (&epn)) |
426 | return -1; |
438 | return -1; |
427 | |
439 | |
428 | if (epp->len) |
440 | if (epp->len) |
429 | { |
441 | { |
430 | if (dup2 (S_TO_SOCKET (epn.fd [0]), S_TO_SOCKET (epp->fd [0])) < 0) |
442 | if (dup2 (epn.fd [0], epp->fd [0]) < 0) |
431 | croak ("unable to dup over old event pipe"); /* should not croak */ |
443 | croak ("unable to dup over old event pipe"); /* should not croak */ |
432 | |
444 | |
433 | if (epp->fd [1] != epp->fd [0]) |
445 | if (epp->fd [1] != epp->fd [0]) |
434 | close (epn.fd [0]); |
446 | close (epn.fd [0]); |
435 | |
447 | |
… | |
… | |
444 | #define s_epipe_fd(epp) ((epp)->fd [0]) |
456 | #define s_epipe_fd(epp) ((epp)->fd [0]) |
445 | |
457 | |
446 | static int |
458 | static int |
447 | s_epipe_wait (s_epipe *epp) |
459 | s_epipe_wait (s_epipe *epp) |
448 | { |
460 | { |
|
|
461 | dTHX; |
449 | #ifdef _WIN32 |
462 | #ifdef _WIN32 |
450 | fd_set rfd; |
463 | fd_set rfd; |
|
|
464 | int fd = s_epipe_fd (epp); |
451 | |
465 | |
452 | FD_ZERO (&rfd); |
466 | FD_ZERO (&rfd); |
453 | FD_SET (s_epipe_fd (epp), &rfd); |
467 | FD_SET (fd, &rfd); |
454 | |
468 | |
455 | return PerlSock_select (s_epipe_fd (epp) + 1, &rfd, 0, 0, 0); |
469 | return PerlSock_select (fd + 1, &rfd, 0, 0, 0); |
456 | #else |
470 | #else |
457 | /* poll is preferable on posix systems */ |
471 | /* poll is preferable on posix systems */ |
458 | struct pollfd pfd; |
472 | struct pollfd pfd; |
459 | |
473 | |
460 | pfd.fd = s_epipe_fd (epp); |
474 | pfd.fd = s_epipe_fd (epp); |