1 | #ifndef SCHMORP_PERL_H_ |
1 | #ifndef SCHMORP_PERL_H_ |
2 | #define SCHMORP_PERL_H_ |
2 | #define SCHMORP_PERL_H_ |
3 | |
3 | |
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. |
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6 | * perl header files MUST already be included. |
6 | */ |
7 | */ |
7 | |
8 | |
8 | #include <signal.h> |
9 | #include <signal.h> |
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10 | #include <errno.h> |
9 | |
11 | |
10 | #ifndef _WIN32 |
12 | #if defined(WIN32 ) || defined(_MINIX) |
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13 | # define SCHMORP_H_PREFER_SELECT 1 |
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14 | #endif |
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15 | |
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16 | #if !SCHMORP_H_PREFER_SELECT |
11 | # include <poll.h> |
17 | # include <poll.h> |
12 | #endif |
18 | #endif |
13 | |
19 | |
14 | /* useful stuff, used by schmorp mostly */ |
20 | /* useful stuff, used by schmorp mostly */ |
15 | |
21 | |
… | |
… | |
19 | (PERL_REVISION > (a) \ |
25 | (PERL_REVISION > (a) \ |
20 | || (PERL_REVISION == (a) \ |
26 | || (PERL_REVISION == (a) \ |
21 | && (PERL_VERSION > (b) \ |
27 | && (PERL_VERSION > (b) \ |
22 | || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
28 | || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
23 | |
29 | |
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30 | #ifndef PERL_MAGIC_ext |
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31 | # define PERL_MAGIC_ext '~' |
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32 | #endif |
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33 | |
24 | #if !PERL_VERSION_ATLEAST (5,6,0) |
34 | #if !PERL_VERSION_ATLEAST (5,6,0) |
25 | # ifndef PL_ppaddr |
35 | # ifndef PL_ppaddr |
26 | # define PL_ppaddr ppaddr |
36 | # define PL_ppaddr ppaddr |
27 | # endif |
37 | # endif |
28 | # ifndef call_sv |
38 | # ifndef call_sv |
… | |
… | |
39 | # endif |
49 | # endif |
40 | # ifndef IS_PADCONST |
50 | # ifndef IS_PADCONST |
41 | # define IS_PADCONST(v) 0 |
51 | # define IS_PADCONST(v) 0 |
42 | # endif |
52 | # endif |
43 | #endif |
53 | #endif |
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54 | |
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55 | /* use NV for 32 bit perls as it allows larger offsets */ |
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56 | #if IVSIZE >= 8 |
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57 | typedef IV VAL64; |
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58 | # define SvVAL64(sv) SvIV (sv) |
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59 | # define newSVval64(i64) newSViv (i64) |
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60 | #else |
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61 | typedef NV VAL64; |
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62 | # define SvVAL64(sv) SvNV (sv) |
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63 | # define newSVval64(i64) newSVnv (i64) |
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64 | #endif |
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65 | |
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66 | /* typemap for the above */ |
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67 | /* |
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68 | VAL64 T_VAL64 |
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69 | |
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70 | INPUT |
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71 | |
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72 | T_VAL64 |
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73 | $var = ($type)SvVAL64 ($arg); |
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74 | |
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75 | OUTPUT |
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76 | |
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77 | T_VAL64 |
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78 | $arg = newSVval64 ($var); |
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79 | */ |
44 | |
80 | |
45 | /* 5.11 */ |
81 | /* 5.11 */ |
46 | #ifndef CxHASARGS |
82 | #ifndef CxHASARGS |
47 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
83 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
48 | #endif |
84 | #endif |
… | |
… | |
208 | /* taken almost verbatim from libev's ev_win32.c */ |
244 | /* taken almost verbatim from libev's ev_win32.c */ |
209 | /* oh, the humanity! */ |
245 | /* oh, the humanity! */ |
210 | static int |
246 | static int |
211 | s_pipe (int filedes [2]) |
247 | s_pipe (int filedes [2]) |
212 | { |
248 | { |
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249 | dTHX; |
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250 | |
213 | struct sockaddr_in addr = { 0 }; |
251 | struct sockaddr_in addr = { 0 }; |
214 | int addr_size = sizeof (addr); |
252 | int addr_size = sizeof (addr); |
215 | struct sockaddr_in adr2; |
253 | struct sockaddr_in adr2; |
216 | int adr2_size = sizeof (adr2); |
254 | int adr2_size = sizeof (adr2); |
217 | SOCKET listener; |
255 | SOCKET listener; |
… | |
… | |
320 | } |
358 | } |
321 | |
359 | |
322 | #endif |
360 | #endif |
323 | |
361 | |
324 | #if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
362 | #if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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363 | # define SCHMORP_H_HAVE_EVENTFD 1 |
325 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
364 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
326 | # include <stdint.h> |
365 | # include <stdint.h> |
327 | # ifdef __cplusplus |
366 | # ifdef __cplusplus |
328 | extern "C" { |
367 | extern "C" { |
329 | # endif |
368 | # endif |
… | |
… | |
336 | #endif |
375 | #endif |
337 | |
376 | |
338 | typedef struct { |
377 | typedef struct { |
339 | int fd[2]; /* read, write fd, might be equal */ |
378 | int fd[2]; /* read, write fd, might be equal */ |
340 | int len; /* write length (1 pipe/socket, 8 eventfd) */ |
379 | int len; /* write length (1 pipe/socket, 8 eventfd) */ |
341 | volatile sig_atomic_t sent; |
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342 | } s_epipe; |
380 | } s_epipe; |
343 | |
381 | |
344 | static int |
382 | static int |
345 | s_epipe_new (s_epipe *epp) |
383 | s_epipe_new (s_epipe *epp) |
346 | { |
384 | { |
… | |
… | |
359 | return -1; |
397 | return -1; |
360 | |
398 | |
361 | if (s_fd_prepare (ep.fd [0]) |
399 | if (s_fd_prepare (ep.fd [0]) |
362 | || s_fd_prepare (ep.fd [1])) |
400 | || s_fd_prepare (ep.fd [1])) |
363 | { |
401 | { |
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402 | dTHX; |
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403 | |
364 | close (ep.fd [0]); |
404 | close (ep.fd [0]); |
365 | close (ep.fd [1]); |
405 | close (ep.fd [1]); |
366 | return -1; |
406 | return -1; |
367 | } |
407 | } |
368 | |
408 | |
369 | ep.len = 1; |
409 | ep.len = 1; |
370 | } |
410 | } |
371 | |
411 | |
372 | ep.sent = 0; |
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373 | *epp = ep; |
412 | *epp = ep; |
374 | return 0; |
413 | return 0; |
375 | } |
414 | } |
376 | |
415 | |
377 | static void |
416 | static void |
378 | s_epipe_destroy (s_epipe *epp) |
417 | s_epipe_destroy (s_epipe *epp) |
379 | { |
418 | { |
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419 | dTHX; |
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420 | |
380 | close (epp->fd [0]); |
421 | close (epp->fd [0]); |
381 | |
422 | |
382 | if (epp->fd [1] != epp->fd [0]) |
423 | if (epp->fd [1] != epp->fd [0]) |
383 | close (epp->fd [1]); |
424 | close (epp->fd [1]); |
384 | |
425 | |
… | |
… | |
386 | } |
427 | } |
387 | |
428 | |
388 | static void |
429 | static void |
389 | s_epipe_signal (s_epipe *epp) |
430 | s_epipe_signal (s_epipe *epp) |
390 | { |
431 | { |
391 | if (epp->sent) |
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392 | return; |
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393 | |
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394 | epp->sent = 1; |
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395 | { |
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396 | #ifdef _WIN32 |
432 | #ifdef _WIN32 |
397 | /* perl overrides send with a function that crashes in other threads. |
433 | /* perl overrides send with a function that crashes in other threads. |
398 | * unfortunately, it overrides it with an argument-less macro, so |
434 | * unfortunately, it overrides it with an argument-less macro, so |
399 | * there is no way to force usage of the real send function. |
435 | * there is no way to force usage of the real send function. |
400 | * incompetent windows programmers - is this redundant? |
436 | * incompetent windows programmers - is this redundant? |
401 | */ |
437 | */ |
402 | DWORD dummy; |
438 | DWORD dummy; |
403 | WriteFile (S_TO_HANDLE (epp->fd [1]), (LPCVOID)&dummy, 1, &dummy, 0); |
439 | WriteFile (S_TO_HANDLE (epp->fd [1]), (LPCVOID)&dummy, 1, &dummy, 0); |
404 | #else |
440 | #else |
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441 | # if SCHMORP_H_HAVE_EVENTFD |
405 | static uint64_t counter = 1; |
442 | static uint64_t counter = 1; |
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443 | # else |
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444 | static char counter [8]; |
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445 | # endif |
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446 | /* some modules accept fd's from outside, support eventfd here */ |
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447 | if (write (epp->fd [1], &counter, epp->len) < 0 |
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448 | && errno == EINVAL |
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449 | && epp->len != 8) |
406 | write (epp->fd [1], &counter, epp->len); |
450 | write (epp->fd [1], &counter, (epp->len = 8)); |
407 | #endif |
451 | #endif |
408 | } |
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409 | } |
452 | } |
410 | |
453 | |
411 | static void |
454 | static void |
412 | s_epipe_drain (s_epipe *epp) |
455 | s_epipe_drain (s_epipe *epp) |
413 | { |
456 | { |
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457 | dTHX; |
414 | char buf [9]; |
458 | char buf [9]; |
415 | |
459 | |
416 | #ifdef _WIN32 |
460 | #ifdef _WIN32 |
417 | recv (epp->fd [0], buf, sizeof (buf), 0); |
461 | recv (epp->fd [0], buf, sizeof (buf), 0); |
418 | #else |
462 | #else |
419 | read (epp->fd [0], buf, sizeof (buf)); |
463 | read (epp->fd [0], buf, sizeof (buf)); |
420 | #endif |
464 | #endif |
421 | |
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422 | epp->sent = 0; |
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423 | } |
465 | } |
424 | |
466 | |
425 | /* like new, but dups over old */ |
467 | /* like new, but dups over old */ |
426 | static int |
468 | static int |
427 | s_epipe_renew (s_epipe *epp) |
469 | s_epipe_renew (s_epipe *epp) |
428 | { |
470 | { |
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471 | dTHX; |
429 | s_epipe epn; |
472 | s_epipe epn; |
430 | |
473 | |
431 | if (epp->fd [1] != epp->fd [0]) |
474 | if (epp->fd [1] != epp->fd [0]) |
432 | close (epp->fd [1]); |
475 | close (epp->fd [1]); |
433 | |
476 | |
… | |
… | |
437 | if (epp->len) |
480 | if (epp->len) |
438 | { |
481 | { |
439 | if (dup2 (epn.fd [0], epp->fd [0]) < 0) |
482 | if (dup2 (epn.fd [0], epp->fd [0]) < 0) |
440 | croak ("unable to dup over old event pipe"); /* should not croak */ |
483 | croak ("unable to dup over old event pipe"); /* should not croak */ |
441 | |
484 | |
442 | if (epp->fd [1] != epp->fd [0]) |
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443 | close (epn.fd [0]); |
485 | close (epn.fd [0]); |
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486 | |
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487 | if (epn.fd [0] == epn.fd [1]) |
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488 | epn.fd [1] = epp->fd [0]; |
444 | |
489 | |
445 | epn.fd [0] = epp->fd [0]; |
490 | epn.fd [0] = epp->fd [0]; |
446 | } |
491 | } |
447 | |
492 | |
448 | *epp = epn; |
493 | *epp = epn; |
… | |
… | |
453 | #define s_epipe_fd(epp) ((epp)->fd [0]) |
498 | #define s_epipe_fd(epp) ((epp)->fd [0]) |
454 | |
499 | |
455 | static int |
500 | static int |
456 | s_epipe_wait (s_epipe *epp) |
501 | s_epipe_wait (s_epipe *epp) |
457 | { |
502 | { |
458 | #ifdef _WIN32 |
503 | dTHX; |
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504 | #if SCHMORP_H_PREFER_SELECT |
459 | fd_set rfd; |
505 | fd_set rfd; |
460 | int fd = s_epipe_fd (epp); |
506 | int fd = s_epipe_fd (epp); |
461 | |
507 | |
462 | FD_ZERO (&rfd); |
508 | FD_ZERO (&rfd); |
463 | FD_SET (fd, &rfd); |
509 | FD_SET (fd, &rfd); |
… | |
… | |
468 | struct pollfd pfd; |
514 | struct pollfd pfd; |
469 | |
515 | |
470 | pfd.fd = s_epipe_fd (epp); |
516 | pfd.fd = s_epipe_fd (epp); |
471 | pfd.events = POLLIN; |
517 | pfd.events = POLLIN; |
472 | |
518 | |
473 | return poll (&pfd, 1, 0); |
519 | return poll (&pfd, 1, -1); |
474 | #endif |
520 | #endif |
475 | } |
521 | } |
476 | |
522 | |
477 | #endif |
523 | #endif |
478 | |
524 | |