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Comparing EV/schmorp.h (file contents):
Revision 1.5 by root, Fri Jul 17 14:49:33 2009 UTC vs.
Revision 1.12 by root, Sat Apr 6 00:05:45 2013 UTC

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.
6 * perl header files MUST already be included.
6 */ 7 */
7 8
8#include <signal.h> 9#include <signal.h>
9#include <errno.h> 10#include <errno.h>
10 11
11#ifndef _WIN32 12#if defined(WIN32 ) || defined(_MINIX)
13# define SCHMORP_H_PREFER_SELECT 1
14#endif
15
16#if !SCHMORP_H_PREFER_SELECT
12# include <poll.h> 17# include <poll.h>
13#endif 18#endif
14 19
15/* useful stuff, used by schmorp mostly */ 20/* useful stuff, used by schmorp mostly */
16 21
… …
20 (PERL_REVISION > (a) \ 25 (PERL_REVISION > (a) \
21 || (PERL_REVISION == (a) \ 26 || (PERL_REVISION == (a) \
22 && (PERL_VERSION > (b) \ 27 && (PERL_VERSION > (b) \
23 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) 28 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
24 29
30#ifndef PERL_MAGIC_ext
31# define PERL_MAGIC_ext '~'
32#endif
33
25#if !PERL_VERSION_ATLEAST (5,6,0) 34#if !PERL_VERSION_ATLEAST (5,6,0)
26# ifndef PL_ppaddr 35# ifndef PL_ppaddr
27# define PL_ppaddr ppaddr 36# define PL_ppaddr ppaddr
28# endif 37# endif
29# ifndef call_sv 38# ifndef call_sv
… …
40# endif 49# endif
41# ifndef IS_PADCONST 50# ifndef IS_PADCONST
42# define IS_PADCONST(v) 0 51# define IS_PADCONST(v) 0
43# endif 52# endif
44#endif 53#endif
54
55/* use NV for 32 bit perls as it allows larger offsets */
56#if IVSIZE >= 8
57typedef IV VAL64;
58# define SvVAL64(sv) SvIV (sv)
59# define newSVval64(i64) newSViv (i64)
60#else
61typedef NV VAL64;
62# define SvVAL64(sv) SvNV (sv)
63# define newSVval64(i64) newSVnv (i64)
64#endif
65
66/* typemap for the above */
67/*
68VAL64 T_VAL64
69
70INPUT
71
72T_VAL64
73 $var = ($type)SvVAL64 ($arg);
74
75OUTPUT
76
77T_VAL64
78 $arg = newSVval64 ($var);
79*/
45 80
46/* 5.11 */ 81/* 5.11 */
47#ifndef CxHASARGS 82#ifndef CxHASARGS
48# define CxHASARGS(cx) (cx)->blk_sub.hasargs 83# define CxHASARGS(cx) (cx)->blk_sub.hasargs
49#endif 84#endif
… …
209/* taken almost verbatim from libev's ev_win32.c */ 244/* taken almost verbatim from libev's ev_win32.c */
210/* oh, the humanity! */ 245/* oh, the humanity! */
211static int 246static int
212s_pipe (int filedes [2]) 247s_pipe (int filedes [2])
213{ 248{
249 dTHX;
250
214 struct sockaddr_in addr = { 0 }; 251 struct sockaddr_in addr = { 0 };
215 int addr_size = sizeof (addr); 252 int addr_size = sizeof (addr);
216 struct sockaddr_in adr2; 253 struct sockaddr_in adr2;
217 int adr2_size = sizeof (adr2); 254 int adr2_size = sizeof (adr2);
218 SOCKET listener; 255 SOCKET listener;
… …
321} 358}
322 359
323#endif 360#endif
324 361
325#if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362#if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
363# define SCHMORP_H_HAVE_EVENTFD 1
326/* 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 */
327# include <stdint.h> 365# include <stdint.h>
328# ifdef __cplusplus 366# ifdef __cplusplus
329extern "C" { 367extern "C" {
330# endif 368# endif
… …
337#endif 375#endif
338 376
339typedef struct { 377typedef struct {
340 int fd[2]; /* read, write fd, might be equal */ 378 int fd[2]; /* read, write fd, might be equal */
341 int len; /* write length (1 pipe/socket, 8 eventfd) */ 379 int len; /* write length (1 pipe/socket, 8 eventfd) */
342 volatile sig_atomic_t sent;
343} s_epipe; 380} s_epipe;
344 381
345static int 382static int
346s_epipe_new (s_epipe *epp) 383s_epipe_new (s_epipe *epp)
347{ 384{
… …
360 return -1; 397 return -1;
361 398
362 if (s_fd_prepare (ep.fd [0]) 399 if (s_fd_prepare (ep.fd [0])
363 || s_fd_prepare (ep.fd [1])) 400 || s_fd_prepare (ep.fd [1]))
364 { 401 {
402 dTHX;
403
365 close (ep.fd [0]); 404 close (ep.fd [0]);
366 close (ep.fd [1]); 405 close (ep.fd [1]);
367 return -1; 406 return -1;
368 } 407 }
369 408
370 ep.len = 1; 409 ep.len = 1;
371 } 410 }
372 411
373 ep.sent = 0;
374 *epp = ep; 412 *epp = ep;
375 return 0; 413 return 0;
376} 414}
377 415
378static void 416static void
379s_epipe_destroy (s_epipe *epp) 417s_epipe_destroy (s_epipe *epp)
380{ 418{
419 dTHX;
420
381 close (epp->fd [0]); 421 close (epp->fd [0]);
382 422
383 if (epp->fd [1] != epp->fd [0]) 423 if (epp->fd [1] != epp->fd [0])
384 close (epp->fd [1]); 424 close (epp->fd [1]);
385 425
… …
387} 427}
388 428
389static void 429static void
390s_epipe_signal (s_epipe *epp) 430s_epipe_signal (s_epipe *epp)
391{ 431{
392 if (epp->sent)
393 return;
394
395 epp->sent = 1;
396 {
397#ifdef _WIN32 432#ifdef _WIN32
398 /* perl overrides send with a function that crashes in other threads. 433 /* perl overrides send with a function that crashes in other threads.
399 * unfortunately, it overrides it with an argument-less macro, so 434 * unfortunately, it overrides it with an argument-less macro, so
400 * 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.
401 * incompetent windows programmers - is this redundant? 436 * incompetent windows programmers - is this redundant?
402 */ 437 */
403 DWORD dummy; 438 DWORD dummy;
404 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);
405#else 440#else
441# if SCHMORP_H_HAVE_EVENTFD
406 static uint64_t counter = 1; 442 static uint64_t counter = 1;
443# else
444 static char counter [8];
445# endif
407 /* some modules accept fd's from outside, support eventfd here */ 446 /* some modules accept fd's from outside, support eventfd here */
408 if (write (epp->fd [1], &counter, epp->len) < 0 447 if (write (epp->fd [1], &counter, epp->len) < 0
409 && errno == EINVAL 448 && errno == EINVAL
410 && epp->len != 8) 449 && epp->len != 8)
411 write (epp->fd [1], &counter, (epp->len = 8)); 450 write (epp->fd [1], &counter, (epp->len = 8));
412#endif 451#endif
413 }
414} 452}
415 453
416static void 454static void
417s_epipe_drain (s_epipe *epp) 455s_epipe_drain (s_epipe *epp)
418{ 456{
457 dTHX;
419 char buf [9]; 458 char buf [9];
420 459
421#ifdef _WIN32 460#ifdef _WIN32
422 recv (epp->fd [0], buf, sizeof (buf), 0); 461 recv (epp->fd [0], buf, sizeof (buf), 0);
423#else 462#else
424 read (epp->fd [0], buf, sizeof (buf)); 463 read (epp->fd [0], buf, sizeof (buf));
425#endif 464#endif
426
427 epp->sent = 0;
428} 465}
429 466
430/* like new, but dups over old */ 467/* like new, but dups over old */
431static int 468static int
432s_epipe_renew (s_epipe *epp) 469s_epipe_renew (s_epipe *epp)
433{ 470{
471 dTHX;
434 s_epipe epn; 472 s_epipe epn;
435 473
436 if (epp->fd [1] != epp->fd [0]) 474 if (epp->fd [1] != epp->fd [0])
437 close (epp->fd [1]); 475 close (epp->fd [1]);
438 476
… …
442 if (epp->len) 480 if (epp->len)
443 { 481 {
444 if (dup2 (epn.fd [0], epp->fd [0]) < 0) 482 if (dup2 (epn.fd [0], epp->fd [0]) < 0)
445 croak ("unable to dup over old event pipe"); /* should not croak */ 483 croak ("unable to dup over old event pipe"); /* should not croak */
446 484
447 if (epp->fd [1] != epp->fd [0])
448 close (epn.fd [0]); 485 close (epn.fd [0]);
486
487 if (epn.fd [0] == epn.fd [1])
488 epn.fd [1] = epp->fd [0];
449 489
450 epn.fd [0] = epp->fd [0]; 490 epn.fd [0] = epp->fd [0];
451 } 491 }
452 492
453 *epp = epn; 493 *epp = epn;
… …
458#define s_epipe_fd(epp) ((epp)->fd [0]) 498#define s_epipe_fd(epp) ((epp)->fd [0])
459 499
460static int 500static int
461s_epipe_wait (s_epipe *epp) 501s_epipe_wait (s_epipe *epp)
462{ 502{
463#ifdef _WIN32 503 dTHX;
504#if SCHMORP_H_PREFER_SELECT
464 fd_set rfd; 505 fd_set rfd;
465 int fd = s_epipe_fd (epp); 506 int fd = s_epipe_fd (epp);
466 507
467 FD_ZERO (&rfd); 508 FD_ZERO (&rfd);
468 FD_SET (fd, &rfd); 509 FD_SET (fd, &rfd);
… …
473 struct pollfd pfd; 514 struct pollfd pfd;
474 515
475 pfd.fd = s_epipe_fd (epp); 516 pfd.fd = s_epipe_fd (epp);
476 pfd.events = POLLIN; 517 pfd.events = POLLIN;
477 518
478 return poll (&pfd, 1, 0); 519 return poll (&pfd, 1, -1);
479#endif 520#endif
480} 521}
481 522
482#endif 523#endif
483 524

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