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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.163 by root, Sun Jan 10 23:44:02 2010 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
5#include <sys/types.h> 14#include <sys/types.h>
6#include <sys/stat.h> 15#include <sys/stat.h>
16#include <sys/statvfs.h>
7#include <unistd.h> 17#include <limits.h>
8#include <fcntl.h> 18#include <fcntl.h>
9#include <signal.h>
10#include <sched.h> 19#include <sched.h>
11 20
12#include <pthread.h> 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
13#include <sys/syscall.h> 22# include <sys/mman.h>
23#endif
14 24
15typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25/* perl namespace pollution */
16typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26#undef VERSION
17typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
18 27
19#if __ia64 28#ifdef _WIN32
20# define STACKSIZE 65536 29
30# define EIO_STRUCT_DIRENT Direntry_t
31# undef malloc
32# undef free
33
34// perl overrides all those nice win32 functions
35# undef open
36# undef read
37# undef write
38# undef send
39# undef recv
40# undef stat
41# undef fstat
42# define lstat stat
43# undef truncate
44# undef ftruncate
45# undef open
46# undef close
47# undef unlink
48# undef rmdir
49# undef rename
50# undef lseek
51
52# define chown(a,b,c) (errno = ENOSYS, -1)
53# define fchown(a,b,c) (errno = ENOSYS, -1)
54# define fchmod(a,b) (errno = ENOSYS, -1)
55# define symlink(a,b) (errno = ENOSYS, -1)
56# define readlink(a,b,c) (errno = ENOSYS, -1)
57# define mknod(a,b,c) (errno = ENOSYS, -1)
58# define truncate(a,b) (errno = ENOSYS, -1)
59# define ftruncate(fd,o) chsize ((fd), (o))
60# define fsync(fd) _commit (fd)
61# define opendir(fd) (errno = ENOSYS, 0)
62# define readdir(fd) (errno = ENOSYS, -1)
63# define closedir(fd) (errno = ENOSYS, -1)
64# define mkdir(a,b) mkdir (a)
65
21#else 66#else
22# define STACKSIZE 4096 67
68# include <sys/time.h>
69# include <sys/select.h>
70# include <unistd.h>
71# include <utime.h>
72# include <signal.h>
73# define EIO_STRUCT_DIRENT struct dirent
74
75#endif
76
77/* perl stupidly overrides readdir and maybe others */
78/* with thread-unsafe versions, imagine that :( */
79#undef readdir
80#undef opendir
81#undef closedir
82
83#define EIO_STRUCT_STAT Stat_t
84
85/* use NV for 32 bit perls as it allows larger offsets */
86#if IVSIZE >= 8
87# define VAL64 IV
88# define SvVAL64 SvIV
89# define newSVval64 newSViv
90#else
91# define VAL64 NV
92# define SvVAL64 SvNV
93# define newSVval64 newSVnv
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/eio.h"
124
125#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0
127# define NO_FADVISE 1
128#endif
129#ifndef POSIX_FADV_SEQUENTIAL
130# define POSIX_FADV_SEQUENTIAL 0
131#endif
132#ifndef POSIX_FADV_RANDOM
133# define POSIX_FADV_RANDOM 0
134#endif
135#ifndef POSIX_FADV_NOREUSE
136# define POSIX_FADV_NOREUSE 0
137#endif
138#ifndef POSIX_FADV_WILLNEED
139# define POSIX_FADV_WILLNEED 0
140#endif
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145#ifndef ST_NODEV
146# define ST_NODEV 0
147#endif
148#ifndef ST_NOEXEC
149# define ST_NOEXEC 0
150#endif
151#ifndef ST_SYNCHRONOUS
152# define ST_SYNCHRONOUS 0
153#endif
154#ifndef ST_MANDLOCK
155# define ST_MANDLOCK 0
156#endif
157#ifndef ST_WRITE
158# define ST_WRITE 0
159#endif
160#ifndef ST_APPEND
161# define ST_APPEND 0
162#endif
163#ifndef ST_IMMUTABLE
164# define ST_IMMUTABLE 0
165#endif
166#ifndef ST_NOATIME
167# define ST_NOATIME 0
168#endif
169#ifndef ST_NODIRATIME
170# define ST_NODIRATIME 0
171#endif
172#ifndef ST_RELATIME
173# define ST_RELATIME 0
174#endif
175
176#ifndef MCL_CURRENT
177# define MCL_CURRENT 0
178#endif
179#ifndef MCL_FUTURE
180# define MCL_FUTURE 0
181#endif
182
183#ifndef MAP_ANONYMOUS
184# ifdef MAP_ANON
185# define MAP_ANONYMOUS MAP_ANON
186# else
187# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
23#endif 188# endif
189#endif
190#ifndef MAP_HUGETLB
191# define MAP_HUGETLB 0
192#endif
193#ifndef MAP_LOCKED
194# define MAP_LOCKED 0
195#endif
196#ifndef MAP_NORESERVE
197# define MAP_NORESERVE 0
198#endif
199#ifndef MAP_POPULATE
200# define MAP_POPULATE 0
201#endif
202#ifndef MAP_NONBLOCK
203# define MAP_NONBLOCK 0
204#endif
205
206#ifndef PAGESIZE
207# define PAGESIZE sysconf (_SC_PAGESIZE)
208#endif
209
210static int req_invoke (eio_req *req);
211#define EIO_FINISH(req) req_invoke (req)
212static void req_destroy (eio_req *grp);
213#define EIO_DESTROY(req) req_destroy (req)
24 214
25enum { 215enum {
26 REQ_QUIT, 216 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
27 REQ_OPEN, REQ_CLOSE,
28 REQ_READ, REQ_WRITE, REQ_READAHEAD,
29 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
30 REQ_FSYNC, REQ_FDATASYNC,
31}; 217};
32 218
33typedef struct aio_cb { 219#include "libeio/eio.c"
34 struct aio_cb *volatile next;
35 220
36 int type;
37
38 int fd;
39 off_t offset;
40 size_t length;
41 ssize_t result;
42 mode_t mode; /* open */
43 int errorno;
44 SV *data, *callback;
45 void *dataptr;
46 STRLEN dataoffset;
47
48 Stat_t *statdata;
49} aio_cb;
50
51typedef aio_cb *aio_req; 221typedef eio_req *aio_req;
222typedef eio_req *aio_req_ornot;
52 223
53static int started; 224static SV *on_next_submit;
54static int nreqs; 225static int next_pri = EIO_PRI_DEFAULT;
55static int max_outstanding = 1<<30; 226static int max_outstanding;
56static int respipe [2];
57 227
58static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 228static s_epipe respipe;
59static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61 229
62static volatile aio_req reqs, reqe; /* queue start, queue end */ 230static void req_destroy (aio_req req);
63static volatile aio_req ress, rese; /* queue start, queue end */ 231static void req_cancel (aio_req req);
232
233static void want_poll (void)
234{
235 /* write a dummy byte to the pipe so fh becomes ready */
236 s_epipe_signal (&respipe);
237}
238
239static void done_poll (void)
240{
241 /* read any signals sent by the worker threads */
242 s_epipe_drain (&respipe);
243}
244
245/* must be called at most once */
246static SV *req_sv (aio_req req, HV *stash)
247{
248 if (!req->self)
249 {
250 req->self = (SV *)newHV ();
251 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
252 }
253
254 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
255}
256
257static aio_req SvAIO_REQ (SV *sv)
258{
259 MAGIC *mg;
260
261 if (!SvROK (sv)
262 || (SvSTASH (SvRV (sv)) != aio_grp_stash
263 && SvSTASH (SvRV (sv)) != aio_req_stash
264 && !sv_derived_from (sv, "IO::AIO::REQ")))
265 croak ("object of class IO::AIO::REQ expected");
266
267 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
268
269 return mg ? (aio_req)mg->mg_ptr : 0;
270}
271
272static void aio_grp_feed (aio_req grp)
273{
274 if (grp->sv2 && SvOK (grp->sv2))
275 {
276 dSP;
277
278 ENTER;
279 SAVETMPS;
280 PUSHMARK (SP);
281 XPUSHs (req_sv (grp, aio_grp_stash));
282 PUTBACK;
283 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
284 SPAGAIN;
285 FREETMPS;
286 LEAVE;
287 }
288}
289
290static void req_submit (eio_req *req)
291{
292 eio_submit (req);
293
294 if (expect_false (on_next_submit))
295 {
296 dSP;
297 SV *cb = sv_2mortal (on_next_submit);
298
299 on_next_submit = 0;
300
301 PUSHMARK (SP);
302 PUTBACK;
303 call_sv (cb, G_DISCARD | G_EVAL);
304 }
305}
306
307static int req_invoke (eio_req *req)
308{
309 dSP;
310
311 if (req->flags & FLAG_SV2_RO_OFF)
312 SvREADONLY_off (req->sv2);
313
314 if (!EIO_CANCELLED (req) && req->callback)
315 {
316 ENTER;
317 SAVETMPS;
318 PUSHMARK (SP);
319 EXTEND (SP, 1);
320
321 switch (req->type)
322 {
323 case EIO_READDIR:
324 {
325 SV *rv = &PL_sv_undef;
326
327 if (req->result >= 0)
328 {
329 int i;
330 char *names = (char *)req->ptr2;
331 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
332 AV *av = newAV ();
333
334 av_extend (av, req->result - 1);
335
336 for (i = 0; i < req->result; ++i)
337 {
338 if (req->int1 & EIO_READDIR_DENTS)
339 {
340 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
341
342 if (req->int1 & EIO_READDIR_CUSTOM2)
343 {
344 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
345 AV *avent = newAV ();
346
347 av_extend (avent, 2);
348
349 if (!sv_type [ent->type])
350 {
351 sv_type [ent->type] = newSViv (ent->type);
352 SvREADONLY_on (sv_type [ent->type]);
353 }
354
355 av_store (avent, 0, namesv);
356 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
357 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
358
359 av_store (av, i, newRV_noinc ((SV *)avent));
360 }
361 else
362 av_store (av, i, namesv);
363
364 ++ent;
365 }
366 else
367 {
368 SV *name = newSVpv (names, 0);
369 av_store (av, i, name);
370 names += SvCUR (name) + 1;
371 }
372 }
373
374 rv = sv_2mortal (newRV_noinc ((SV *)av));
375 }
376
377 PUSHs (rv);
378
379 if (req->int1 & EIO_READDIR_CUSTOM1)
380 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381 }
382 break;
383
384 case EIO_OPEN:
385 {
386 /* convert fd to fh */
387 SV *fh = &PL_sv_undef;
388
389 if (req->result >= 0)
390 {
391 GV *gv = (GV *)sv_newmortal ();
392 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
393 char sym [64];
394 int symlen;
395
396 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
397 gv_init (gv, aio_stash, sym, symlen, 0);
398
399 symlen = snprintf (
400 sym,
401 sizeof (sym),
402 "%s&=%d",
403 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
404 (int)req->result
405 );
406
407 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
408 fh = (SV *)gv;
409 }
410
411 PUSHs (fh);
412 }
413 break;
414
415 case EIO_STATVFS:
416 case EIO_FSTATVFS:
417 {
418 SV *rv = &PL_sv_undef;
419
420 if (req->result >= 0)
421 {
422 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
423 HV *hv = newHV ();
424
425 rv = sv_2mortal (newRV_noinc ((SV *)hv));
426
427 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
428 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
429 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
430 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
431 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
432 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
433 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
434 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
435 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
436 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
437 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
438 }
439
440 PUSHs (rv);
441 }
442
443 break;
444
445 case EIO_GROUP:
446 req->int1 = 2; /* mark group as finished */
447
448 if (req->sv1)
449 {
450 int i;
451 AV *av = (AV *)req->sv1;
452
453 EXTEND (SP, AvFILL (av) + 1);
454 for (i = 0; i <= AvFILL (av); ++i)
455 PUSHs (*av_fetch (av, i, 0));
456 }
457 break;
458
459 case EIO_NOP:
460 case EIO_BUSY:
461 break;
462
463 case EIO_READLINK:
464 if (req->result > 0)
465 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
466 break;
467
468 case EIO_STAT:
469 case EIO_LSTAT:
470 case EIO_FSTAT:
471 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
472 PL_laststatval = req->result;
473 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
474 PUSHs (sv_2mortal (newSViv (req->result)));
475 break;
476
477 case EIO_READ:
478 {
479 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
480 *SvEND (req->sv2) = 0;
481 SvPOK_only (req->sv2);
482 SvSETMAGIC (req->sv2);
483 PUSHs (sv_2mortal (newSViv (req->result)));
484 }
485 break;
486
487 case EIO_DUP2:
488 if (req->result > 0)
489 req->result = 0;
490 /* FALLTHROUGH */
491
492 default:
493 PUSHs (sv_2mortal (newSViv (req->result)));
494 break;
495 }
496
497 errno = req->errorno;
498
499 PUTBACK;
500 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
501 SPAGAIN;
502
503 FREETMPS;
504 LEAVE;
505
506 PUTBACK;
507 }
508
509 return !!SvTRUE (ERRSV);
510}
511
512static void req_destroy (aio_req req)
513{
514 if (req->self)
515 {
516 sv_unmagic (req->self, PERL_MAGIC_ext);
517 SvREFCNT_dec (req->self);
518 }
519
520 SvREFCNT_dec (req->sv1);
521 SvREFCNT_dec (req->sv2);
522 SvREFCNT_dec (req->callback);
523
524 Safefree (req);
525}
526
527static void req_cancel_subs (aio_req grp)
528{
529 aio_req sub;
530
531 if (grp->type != EIO_GROUP)
532 return;
533
534 SvREFCNT_dec (grp->sv2);
535 grp->sv2 = 0;
536
537 eio_grp_cancel (grp);
538}
64 539
65static void 540static void
66poll_wait () 541create_respipe (void)
67{ 542{
68 if (!nreqs) 543 if (s_epipe_renew (&respipe))
544 croak ("IO::AIO: unable to initialize result pipe");
545}
546
547static void poll_wait (void)
548{
549 while (eio_nreqs ())
550 {
551 int size;
552
553 X_LOCK (reslock);
554 size = res_queue.size;
555 X_UNLOCK (reslock);
556
557 if (size)
69 return; 558 return;
70 559
71 fd_set rfd; 560 etp_maybe_start_thread ();
72 FD_ZERO(&rfd);
73 FD_SET(respipe [0], &rfd);
74 561
75 select (respipe [0] + 1, &rfd, 0, 0, 0); 562 s_epipe_wait (&respipe);
76}
77
78static int
79poll_cb ()
80{
81 dSP;
82 int count = 0;
83 aio_req req;
84
85 {
86 /* read and signals sent by the worker threads */
87 char buf [32];
88 while (read (respipe [0], buf, 32) > 0)
89 ;
90 } 563 }
564}
91 565
566static int poll_cb (void)
567{
92 for (;;) 568 for (;;)
93 { 569 {
94 pthread_mutex_lock (&reslock); 570 int res = eio_poll ();
95 571
96 req = ress;
97
98 if (ress) 572 if (res > 0)
99 {
100 ress = ress->next;
101 if (!ress) rese = 0;
102 }
103
104 pthread_mutex_unlock (&reslock);
105
106 if (!req)
107 break; 573 croak (0);
108 574
109 nreqs--; 575 if (!max_outstanding || max_outstanding > eio_nreqs ())
576 return res;
110 577
111 if (req->type == REQ_QUIT) 578 poll_wait ();
112 started--;
113 else
114 {
115 int errorno = errno;
116 errno = req->errorno;
117
118 if (req->type == REQ_READ)
119 SvCUR_set (req->data, req->dataoffset
120 + req->result > 0 ? req->result : 0);
121
122 if (req->data)
123 SvREFCNT_dec (req->data);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 PUSHMARK (SP);
135 XPUSHs (sv_2mortal (newSViv (req->result)));
136
137 if (req->type == REQ_OPEN)
138 {
139 /* convert fd to fh */
140 SV *fh;
141
142 PUTBACK;
143 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
144 SPAGAIN;
145
146 fh = POPs;
147
148 PUSHMARK (SP);
149 XPUSHs (fh);
150 }
151
152 if (SvOK (req->callback))
153 {
154 PUTBACK;
155 call_sv (req->callback, G_VOID | G_EVAL);
156 SPAGAIN;
157 }
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno;
163 count++;
164 }
165
166 Safefree (req);
167 } 579 }
168
169 return count;
170} 580}
171 581
172static void *aio_proc(void *arg); 582static void atfork_child (void)
583{
584 create_respipe ();
585}
173 586
587/*****************************************************************************/
588
589#if !_POSIX_MAPPED_FILES
590# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
591# define munmap(addr,length) (errno = ENOSYS, -1)
592#endif
593
594#define MMAP_MAGIC PERL_MAGIC_ext
595
174static void 596static int
175start_thread (void) 597mmap_free (pTHX_ SV *sv, MAGIC *mg)
176{ 598{
177 sigset_t fullsigset, oldsigset; 599 int old_errno = errno;
178 pthread_t tid; 600 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
179 pthread_attr_t attr; 601 errno = old_errno;
180 602
181 pthread_attr_init (&attr); 603 mg->mg_obj = 0; /* just in case */
182 pthread_attr_setstacksize (&attr, STACKSIZE);
183 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
184 604
185 sigfillset (&fullsigset); 605 SvREADONLY_off (sv);
186 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); 606 SvCUR_set (sv, 0);
187 607 SvLEN_set (sv, 0);
188 if (pthread_create (&tid, &attr, aio_proc, 0) == 0) 608 SvPVX (sv) = 0;
189 started++; 609 SvOK_off (sv);
190
191 sigprocmask (SIG_SETMASK, &oldsigset, 0);
192}
193
194static void
195send_req (aio_req req)
196{
197 nreqs++;
198
199 pthread_mutex_lock (&reqlock);
200
201 req->next = 0;
202
203 if (reqe)
204 {
205 reqe->next = req;
206 reqe = req;
207 }
208 else
209 reqe = reqs = req;
210
211 pthread_cond_signal (&reqwait);
212 pthread_mutex_unlock (&reqlock);
213
214 while (nreqs > max_outstanding)
215 {
216 poll_wait ();
217 poll_cb ();
218 }
219}
220
221static void
222end_thread (void)
223{
224 aio_req req;
225 New (0, req, 1, aio_cb);
226 req->type = REQ_QUIT;
227
228 send_req (req);
229}
230
231static void
232read_write (int dowrite, int fd, off_t offset, size_t length,
233 SV *data, STRLEN dataoffset, SV *callback)
234{
235 aio_req req;
236 STRLEN svlen;
237 char *svptr = SvPV (data, svlen);
238
239 SvUPGRADE (data, SVt_PV);
240 SvPOK_on (data);
241
242 if (dataoffset < 0)
243 dataoffset += svlen;
244
245 if (dataoffset < 0 || dataoffset > svlen)
246 croak ("data offset outside of string");
247
248 if (dowrite)
249 {
250 /* write: check length and adjust. */
251 if (length < 0 || length + dataoffset > svlen)
252 length = svlen - dataoffset;
253 }
254 else
255 {
256 /* read: grow scalar as necessary */
257 svptr = SvGROW (data, length + dataoffset);
258 }
259
260 if (length < 0)
261 croak ("length must not be negative");
262
263 Newz (0, req, 1, aio_cb);
264
265 if (!req)
266 croak ("out of memory during aio_req allocation");
267
268 req->type = dowrite ? REQ_WRITE : REQ_READ;
269 req->fd = fd;
270 req->offset = offset;
271 req->length = length;
272 req->data = SvREFCNT_inc (data);
273 req->dataptr = (char *)svptr + dataoffset;
274 req->callback = SvREFCNT_inc (callback);
275
276 send_req (req);
277}
278
279static void *
280aio_proc (void *thr_arg)
281{
282 aio_req req;
283 int type;
284
285 do
286 {
287 pthread_mutex_lock (&reqlock);
288
289 for (;;)
290 {
291 req = reqs;
292
293 if (reqs)
294 {
295 reqs = reqs->next;
296 if (!reqs) reqe = 0;
297 }
298
299 if (req)
300 break;
301
302 pthread_cond_wait (&reqwait, &reqlock);
303 }
304
305 pthread_mutex_unlock (&reqlock);
306
307 errno = 0; /* strictly unnecessary */
308
309 type = req->type;
310
311 switch (type)
312 {
313 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
314 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
315#if SYS_readahead
316 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
317#else
318 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319#endif
320
321 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324
325 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
326 case REQ_CLOSE: req->result = close (req->fd); break;
327 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
328
329 case REQ_FSYNC: req->result = fsync (req->fd); break;
330 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331
332 case REQ_QUIT:
333 break;
334
335 default:
336 req->result = ENOSYS;
337 break;
338 }
339
340 req->errorno = errno;
341
342 pthread_mutex_lock (&reslock);
343
344 req->next = 0;
345
346 if (rese)
347 {
348 rese->next = req;
349 rese = req;
350 }
351 else
352 {
353 rese = ress = req;
354
355 /* write a dummy byte to the pipe so fh becomes ready */
356 write (respipe [1], &respipe, 1);
357 }
358
359 pthread_mutex_unlock (&reslock);
360 }
361 while (type != REQ_QUIT);
362 610
363 return 0; 611 return 0;
364} 612}
365 613
614static MGVTBL mmap_vtbl = {
615 0, 0, 0, 0, mmap_free
616};
617
618/*****************************************************************************/
619
620static SV *
621get_cb (SV *cb_sv)
622{
623 SvGETMAGIC (cb_sv);
624 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
625}
626
627#define dREQ \
628 SV *cb_cv; \
629 aio_req req; \
630 int req_pri = next_pri; \
631 next_pri = EIO_PRI_DEFAULT; \
632 \
633 cb_cv = get_cb (callback); \
634 \
635 Newz (0, req, 1, eio_req); \
636 if (!req) \
637 croak ("out of memory during eio_req allocation"); \
638 \
639 req->callback = SvREFCNT_inc (cb_cv); \
640 req->pri = req_pri
641
642#define REQ_SEND \
643 PUTBACK; \
644 req_submit (req); \
645 SPAGAIN; \
646 \
647 if (GIMME_V != G_VOID) \
648 XPUSHs (req_sv (req, aio_req_stash));
649
366MODULE = IO::AIO PACKAGE = IO::AIO 650MODULE = IO::AIO PACKAGE = IO::AIO
367 651
368PROTOTYPES: ENABLE 652PROTOTYPES: ENABLE
369 653
370BOOT: 654BOOT:
371{ 655{
372 if (pipe (respipe)) 656 static const struct {
373 croak ("unable to initialize result pipe"); 657 const char *name;
658 IV iv;
659 } *civ, const_iv[] = {
660# define const_niv(name, value) { # name, (IV) value },
661# define const_iv(name) { # name, (IV) name },
662# define const_eio(name) { # name, (IV) EIO_ ## name },
663 const_iv (EXDEV)
664 const_iv (ENOSYS)
665 const_iv (O_RDONLY)
666 const_iv (O_WRONLY)
667 const_iv (O_CREAT)
668 const_iv (O_TRUNC)
669#ifndef _WIN32
670 const_iv (S_IFIFO)
671#endif
672 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
673 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
674 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
675 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
676 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
677 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
374 678
375 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 679 const_iv (ST_RDONLY)
376 croak ("cannot set result pipe to nonblocking mode"); 680 const_iv (ST_NOSUID)
681 const_iv (ST_NODEV)
682 const_iv (ST_NOEXEC)
683 const_iv (ST_SYNCHRONOUS)
684 const_iv (ST_MANDLOCK)
685 const_iv (ST_WRITE)
686 const_iv (ST_APPEND)
687 const_iv (ST_IMMUTABLE)
688 const_iv (ST_NOATIME)
689 const_iv (ST_NODIRATIME)
690 const_iv (ST_RELATIME)
377 691
378 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 692 const_iv (PROT_EXEC)
379 croak ("cannot set result pipe to nonblocking mode"); 693 const_iv (PROT_NONE)
380} 694 const_iv (PROT_READ)
695 const_iv (PROT_WRITE)
381 696
697 /*const_iv (MAP_FIXED)*/
698 const_iv (MAP_PRIVATE)
699 const_iv (MAP_SHARED)
700 const_iv (MAP_ANONYMOUS)
701
702 /* linuxish */
703 const_iv (MAP_HUGETLB)
704 const_iv (MAP_LOCKED)
705 const_iv (MAP_NORESERVE)
706 const_iv (MAP_POPULATE)
707 const_iv (MAP_NONBLOCK)
708
709 const_iv (MCL_FUTURE)
710 const_iv (MCL_CURRENT)
711
712 const_eio (MS_ASYNC)
713 const_eio (MS_INVALIDATE)
714 const_eio (MS_SYNC)
715
716 const_eio (MT_MODIFY)
717
718 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
719 const_eio (SYNC_FILE_RANGE_WRITE)
720 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
721
722 const_eio (READDIR_DENTS)
723 const_eio (READDIR_DIRS_FIRST)
724 const_eio (READDIR_STAT_ORDER)
725 const_eio (READDIR_FOUND_UNKNOWN)
726
727 const_eio (DT_UNKNOWN)
728 const_eio (DT_FIFO)
729 const_eio (DT_CHR)
730 const_eio (DT_DIR)
731 const_eio (DT_BLK)
732 const_eio (DT_REG)
733 const_eio (DT_LNK)
734 const_eio (DT_SOCK)
735 const_eio (DT_WHT)
736 };
737
738 aio_stash = gv_stashpv ("IO::AIO" , 1);
739 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
740 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
741
742 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
743 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
744
745 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
746
747 create_respipe ();
748
749 if (eio_init (want_poll, done_poll) < 0)
750 croak ("IO::AIO: unable to initialise eio library");
751
752 /* atfork child called in fifo order, so before eio's handler */
753 X_THREAD_ATFORK (0, 0, atfork_child);
754}
755
382void 756void
383min_parallel(nthreads) 757max_poll_reqs (int nreqs)
384 int nthreads
385 PROTOTYPE: $ 758 PROTOTYPE: $
386 CODE: 759 CODE:
387 while (nthreads > started) 760 eio_set_max_poll_reqs (nreqs);
388 start_thread ();
389 761
390void 762void
391max_parallel(nthreads) 763max_poll_time (double nseconds)
392 int nthreads
393 PROTOTYPE: $ 764 PROTOTYPE: $
394 CODE: 765 CODE:
766 eio_set_max_poll_time (nseconds);
767
768void
769min_parallel (int nthreads)
770 PROTOTYPE: $
771 CODE:
772 eio_set_min_parallel (nthreads);
773
774void
775max_parallel (int nthreads)
776 PROTOTYPE: $
777 CODE:
778 eio_set_max_parallel (nthreads);
779
780void
781max_idle (int nthreads)
782 PROTOTYPE: $
783 CODE:
784 eio_set_max_idle (nthreads);
785
786void
787max_outstanding (int maxreqs)
788 PROTOTYPE: $
789 CODE:
790 max_outstanding = maxreqs;
791
792void
793aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
794 PROTOTYPE: $$$;$
795 PPCODE:
395{ 796{
396 int cur = started; 797 dREQ;
397 while (cur > nthreads) 798
398 { 799 req->type = EIO_OPEN;
399 end_thread (); 800 req->sv1 = newSVsv (pathname);
400 cur--; 801 req->ptr1 = SvPVbyte_nolen (req->sv1);
802 req->int1 = flags;
803 req->int2 = mode;
804
805 REQ_SEND;
806}
807
808void
809aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
810 PROTOTYPE: $;$
811 ALIAS:
812 aio_fsync = EIO_FSYNC
813 aio_fdatasync = EIO_FDATASYNC
814 PPCODE:
815{
816 int fd = s_fileno_croak (fh, 0);
817 dREQ;
818
819 req->type = ix;
820 req->sv1 = newSVsv (fh);
821 req->int1 = fd;
822
823 REQ_SEND (req);
824}
825
826void
827aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
828 PROTOTYPE: $$$$;$
829 PPCODE:
830{
831 int fd = s_fileno_croak (fh, 0);
832 dREQ;
833
834 req->type = EIO_SYNC_FILE_RANGE;
835 req->sv1 = newSVsv (fh);
836 req->int1 = fd;
837 req->offs = offset;
838 req->size = nbytes;
839 req->int2 = flags;
840
841 REQ_SEND (req);
842}
843
844void
845aio_close (SV *fh, SV *callback=&PL_sv_undef)
846 PROTOTYPE: $;$
847 PPCODE:
848{
849 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
850 int fd = s_fileno_croak (fh, 0);
851 dREQ;
852
853 if (close_pipe < 0)
854 {
855 int pipefd [2];
856
857 if (pipe (pipefd) < 0
858 || close (pipefd [1]) < 0
859 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
860 abort (); /*D*/
861
862 close_pipe = pipefd [0];
401 } 863 }
402 864
403 while (started > nthreads) 865 req->type = EIO_DUP2;
866 req->int1 = close_pipe;
867 req->sv2 = newSVsv (fh);
868 req->int2 = fd;
869
870 REQ_SEND (req);
871}
872
873void
874aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
875 ALIAS:
876 aio_read = EIO_READ
877 aio_write = EIO_WRITE
878 PROTOTYPE: $$$$$;$
879 PPCODE:
880{
881 STRLEN svlen;
882 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
883 char *svptr = SvPVbyte (data, svlen);
884 UV len = SvUV (length);
885
886 if (dataoffset < 0)
887 dataoffset += svlen;
888
889 if (dataoffset < 0 || dataoffset > svlen)
890 croak ("dataoffset outside of data scalar");
891
892 if (ix == EIO_WRITE)
893 {
894 /* write: check length and adjust. */
895 if (!SvOK (length) || len + dataoffset > svlen)
896 len = svlen - dataoffset;
897 }
898 else
899 {
900 /* read: check type and grow scalar as necessary */
901 SvUPGRADE (data, SVt_PV);
902 svptr = SvGROW (data, len + dataoffset + 1);
903 }
904
905 {
906 dREQ;
907
908 req->type = ix;
909 req->sv1 = newSVsv (fh);
910 req->int1 = fd;
911 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
912 req->size = len;
913 req->sv2 = SvREFCNT_inc (data);
914 req->ptr2 = (char *)svptr + dataoffset;
915 req->stroffset = dataoffset;
916
917 if (!SvREADONLY (data))
918 {
919 SvREADONLY_on (data);
920 req->flags |= FLAG_SV2_RO_OFF;
921 }
922
923 REQ_SEND;
924 }
925}
926
927void
928aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
929 PROTOTYPE: $$;$
930 PPCODE:
931{
932 SV *data;
933 dREQ;
934
935 req->type = EIO_READLINK;
936 req->sv1 = newSVsv (path);
937 req->ptr1 = SvPVbyte_nolen (req->sv1);
938
939 REQ_SEND;
940}
941
942void
943aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
944 PROTOTYPE: $$$$;$
945 PPCODE:
946{
947 int ifd = s_fileno_croak (in_fh , 0);
948 int ofd = s_fileno_croak (out_fh, 1);
949 dREQ;
950
951 req->type = EIO_SENDFILE;
952 req->sv1 = newSVsv (out_fh);
953 req->int1 = ofd;
954 req->sv2 = newSVsv (in_fh);
955 req->int2 = ifd;
956 req->offs = in_offset;
957 req->size = length;
958
959 REQ_SEND;
960}
961
962void
963aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
964 PROTOTYPE: $$$;$
965 PPCODE:
966{
967 int fd = s_fileno_croak (fh, 0);
968 dREQ;
969
970 req->type = EIO_READAHEAD;
971 req->sv1 = newSVsv (fh);
972 req->int1 = fd;
973 req->offs = offset;
974 req->size = length;
975
976 REQ_SEND;
977}
978
979void
980aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
981 ALIAS:
982 aio_stat = EIO_STAT
983 aio_lstat = EIO_LSTAT
984 aio_statvfs = EIO_STATVFS
985 PPCODE:
986{
987 dREQ;
988
989 req->sv1 = newSVsv (fh_or_path);
990
991 if (SvPOK (req->sv1))
992 {
993 req->type = ix;
994 req->ptr1 = SvPVbyte_nolen (req->sv1);
995 }
996 else
997 {
998 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
999 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1000 }
1001
1002 REQ_SEND;
1003}
1004
1005void
1006aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1007 PPCODE:
1008{
1009 dREQ;
1010
1011 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1012 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1013 req->sv1 = newSVsv (fh_or_path);
1014
1015 if (SvPOK (req->sv1))
1016 {
1017 req->type = EIO_UTIME;
1018 req->ptr1 = SvPVbyte_nolen (req->sv1);
1019 }
1020 else
1021 {
1022 req->type = EIO_FUTIME;
1023 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1024 }
1025
1026 REQ_SEND;
1027}
1028
1029void
1030aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1031 PPCODE:
1032{
1033 dREQ;
1034
1035 req->sv1 = newSVsv (fh_or_path);
1036 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1037
1038 if (SvPOK (req->sv1))
1039 {
1040 req->type = EIO_TRUNCATE;
1041 req->ptr1 = SvPVbyte_nolen (req->sv1);
1042 }
1043 else
1044 {
1045 req->type = EIO_FTRUNCATE;
1046 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1047 }
1048
1049 REQ_SEND;
1050}
1051
1052void
1053aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1054 ALIAS:
1055 aio_chmod = EIO_CHMOD
1056 aio_mkdir = EIO_MKDIR
1057 PPCODE:
1058{
1059 dREQ;
1060
1061 req->int2 = mode;
1062 req->sv1 = newSVsv (fh_or_path);
1063
1064 if (SvPOK (req->sv1))
1065 {
1066 req->type = ix;
1067 req->ptr1 = SvPVbyte_nolen (req->sv1);
1068 }
1069 else
1070 {
1071 req->type = EIO_FCHMOD;
1072 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1073 }
1074
1075 REQ_SEND;
1076}
1077
1078void
1079aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1080 PPCODE:
1081{
1082 dREQ;
1083
1084 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1085 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1086 req->sv1 = newSVsv (fh_or_path);
1087
1088 if (SvPOK (req->sv1))
1089 {
1090 req->type = EIO_CHOWN;
1091 req->ptr1 = SvPVbyte_nolen (req->sv1);
1092 }
1093 else
1094 {
1095 req->type = EIO_FCHOWN;
1096 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097 }
1098
1099 REQ_SEND;
1100}
1101
1102void
1103aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1104 PPCODE:
1105{
1106 dREQ;
1107
1108 req->type = EIO_READDIR;
1109 req->sv1 = newSVsv (pathname);
1110 req->ptr1 = SvPVbyte_nolen (req->sv1);
1111 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1112
1113 if (flags & EIO_READDIR_DENTS)
1114 req->int1 |= EIO_READDIR_CUSTOM2;
1115
1116 REQ_SEND;
1117}
1118
1119void
1120aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1121 ALIAS:
1122 aio_unlink = EIO_UNLINK
1123 aio_rmdir = EIO_RMDIR
1124 aio_readdir = EIO_READDIR
1125 PPCODE:
1126{
1127 dREQ;
1128
1129 req->type = ix;
1130 req->sv1 = newSVsv (pathname);
1131 req->ptr1 = SvPVbyte_nolen (req->sv1);
1132
1133 REQ_SEND;
1134}
1135
1136void
1137aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1138 ALIAS:
1139 aio_link = EIO_LINK
1140 aio_symlink = EIO_SYMLINK
1141 aio_rename = EIO_RENAME
1142 PPCODE:
1143{
1144 dREQ;
1145
1146 req->type = ix;
1147 req->sv1 = newSVsv (oldpath);
1148 req->ptr1 = SvPVbyte_nolen (req->sv1);
1149 req->sv2 = newSVsv (newpath);
1150 req->ptr2 = SvPVbyte_nolen (req->sv2);
1151
1152 REQ_SEND;
1153}
1154
1155void
1156aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1157 PPCODE:
1158{
1159 dREQ;
1160
1161 req->type = EIO_MKNOD;
1162 req->sv1 = newSVsv (pathname);
1163 req->ptr1 = SvPVbyte_nolen (req->sv1);
1164 req->int2 = (mode_t)mode;
1165 req->offs = dev;
1166
1167 REQ_SEND;
1168}
1169
1170void
1171aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1172 ALIAS:
1173 aio_mtouch = EIO_MTOUCH
1174 aio_msync = EIO_MSYNC
1175 PROTOTYPE: $$$$;$
1176 PPCODE:
1177{
1178 STRLEN svlen;
1179 UV len = SvUV (length);
1180 char *svptr = SvPVbyte (data, svlen);
1181
1182 if (offset < 0)
1183 offset += svlen;
1184
1185 if (offset < 0 || offset > svlen)
1186 croak ("offset outside of scalar");
1187
1188 if (!SvOK (length) || len + offset > svlen)
1189 len = svlen - offset;
1190
1191 {
1192 dREQ;
1193
1194 req->type = ix;
1195 req->size = len;
1196 req->sv2 = SvREFCNT_inc (data);
1197 req->ptr2 = (char *)svptr + offset;
1198 req->int1 = flags;
1199
1200 REQ_SEND;
1201 }
1202}
1203
1204void
1205aio_busy (double delay, SV *callback=&PL_sv_undef)
1206 PPCODE:
1207{
1208 dREQ;
1209
1210 req->type = EIO_BUSY;
1211 req->nv1 = delay < 0. ? 0. : delay;
1212
1213 REQ_SEND;
1214}
1215
1216void
1217aio_group (SV *callback=&PL_sv_undef)
1218 PROTOTYPE: ;$
1219 PPCODE:
1220{
1221 dREQ;
1222
1223 req->type = EIO_GROUP;
1224
1225 req_submit (req);
1226 XPUSHs (req_sv (req, aio_grp_stash));
1227}
1228
1229void
1230aio_nop (SV *callback=&PL_sv_undef)
1231 ALIAS:
1232 aio_nop = EIO_NOP
1233 aio_sync = EIO_SYNC
1234 PPCODE:
1235{
1236 dREQ;
1237
1238 req->type = ix;
1239
1240 REQ_SEND;
1241}
1242
1243int
1244aioreq_pri (int pri = 0)
1245 PROTOTYPE: ;$
1246 CODE:
1247 RETVAL = next_pri;
1248 if (items > 0)
1249 {
1250 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1251 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1252 next_pri = pri;
1253 }
1254 OUTPUT:
1255 RETVAL
1256
1257void
1258aioreq_nice (int nice = 0)
1259 CODE:
1260 nice = next_pri - nice;
1261 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1262 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1263 next_pri = nice;
1264
1265void
1266flush ()
1267 PROTOTYPE:
1268 CODE:
1269 while (eio_nreqs ())
404 { 1270 {
405 poll_wait (); 1271 poll_wait ();
406 poll_cb (); 1272 poll_cb ();
407 } 1273 }
408}
409 1274
410int 1275int
411max_outstanding(nreqs)
412 int nreqs
413 PROTOTYPE: $
414 CODE:
415 RETVAL = max_outstanding;
416 max_outstanding = nreqs;
417
418void
419aio_open(pathname,flags,mode,callback=&PL_sv_undef)
420 SV * pathname
421 int flags
422 int mode
423 SV * callback
424 PROTOTYPE: $$$;$
425 CODE:
426{
427 aio_req req;
428
429 Newz (0, req, 1, aio_cb);
430
431 if (!req)
432 croak ("out of memory during aio_req allocation");
433
434 req->type = REQ_OPEN;
435 req->data = newSVsv (pathname);
436 req->dataptr = SvPV_nolen (req->data);
437 req->fd = flags;
438 req->mode = mode;
439 req->callback = SvREFCNT_inc (callback);
440
441 send_req (req);
442}
443
444void
445aio_close(fh,callback=&PL_sv_undef)
446 InputStream fh
447 SV * callback
448 PROTOTYPE: $;$
449 ALIAS:
450 aio_close = REQ_CLOSE
451 aio_fsync = REQ_FSYNC
452 aio_fdatasync = REQ_FDATASYNC
453 CODE:
454{
455 aio_req req;
456
457 Newz (0, req, 1, aio_cb);
458
459 if (!req)
460 croak ("out of memory during aio_req allocation");
461
462 req->type = ix;
463 req->fd = PerlIO_fileno (fh);
464 req->callback = SvREFCNT_inc (callback);
465
466 send_req (req);
467}
468
469void
470aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471 InputStream fh
472 UV offset
473 IV length
474 SV * data
475 IV dataoffset
476 SV * callback
477 PROTOTYPE: $$$$$;$
478 CODE:
479 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
480
481void
482aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
483 OutputStream fh
484 UV offset
485 IV length
486 SV * data
487 IV dataoffset
488 SV * callback
489 PROTOTYPE: $$$$$;$
490 CODE:
491 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
492
493void
494aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495 InputStream fh
496 UV offset
497 IV length
498 SV * callback
499 PROTOTYPE: $$$;$
500 CODE:
501{
502 aio_req req;
503
504 if (length < 0)
505 croak ("length must not be negative");
506
507 Newz (0, req, 1, aio_cb);
508
509 if (!req)
510 croak ("out of memory during aio_req allocation");
511
512 req->type = REQ_READAHEAD;
513 req->fd = PerlIO_fileno (fh);
514 req->offset = offset;
515 req->length = length;
516 req->callback = SvREFCNT_inc (callback);
517
518 send_req (req);
519}
520
521void
522aio_stat(fh_or_path,callback=&PL_sv_undef)
523 SV * fh_or_path
524 SV * callback
525 ALIAS:
526 aio_stat = REQ_STAT
527 aio_lstat = REQ_LSTAT
528 CODE:
529{
530 aio_req req;
531
532 Newz (0, req, 1, aio_cb);
533
534 if (!req)
535 croak ("out of memory during aio_req allocation");
536
537 New (0, req->statdata, 1, Stat_t);
538
539 if (!req->statdata)
540 croak ("out of memory during aio_req->statdata allocation");
541
542 if (SvPOK (fh_or_path))
543 {
544 req->type = ix;
545 req->data = newSVsv (fh_or_path);
546 req->dataptr = SvPV_nolen (req->data);
547 }
548 else
549 {
550 req->type = REQ_FSTAT;
551 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552 }
553
554 req->callback = SvREFCNT_inc (callback);
555
556 send_req (req);
557}
558
559void
560aio_unlink(pathname,callback=&PL_sv_undef)
561 SV * pathname
562 SV * callback
563 CODE:
564{
565 aio_req req;
566
567 Newz (0, req, 1, aio_cb);
568
569 if (!req)
570 croak ("out of memory during aio_req allocation");
571
572 req->type = REQ_UNLINK;
573 req->data = newSVsv (pathname);
574 req->dataptr = SvPV_nolen (req->data);
575 req->callback = SvREFCNT_inc (callback);
576
577 send_req (req);
578}
579
580void
581flush()
582 PROTOTYPE:
583 CODE:
584 while (nreqs)
585 {
586 poll_wait ();
587 poll_cb ();
588 }
589
590void
591poll() 1276poll()
592 PROTOTYPE: 1277 PROTOTYPE:
593 CODE: 1278 CODE:
594 if (nreqs)
595 {
596 poll_wait (); 1279 poll_wait ();
597 poll_cb (); 1280 RETVAL = poll_cb ();
598 } 1281 OUTPUT:
1282 RETVAL
599 1283
600int 1284int
601poll_fileno() 1285poll_fileno()
602 PROTOTYPE: 1286 PROTOTYPE:
603 CODE: 1287 CODE:
604 RETVAL = respipe [0]; 1288 RETVAL = s_epipe_fd (&respipe);
605 OUTPUT: 1289 OUTPUT:
606 RETVAL 1290 RETVAL
607 1291
608int 1292int
609poll_cb(...) 1293poll_cb(...)
… …
615 1299
616void 1300void
617poll_wait() 1301poll_wait()
618 PROTOTYPE: 1302 PROTOTYPE:
619 CODE: 1303 CODE:
620 if (nreqs)
621 poll_wait (); 1304 poll_wait ();
622 1305
623int 1306int
624nreqs() 1307nreqs()
625 PROTOTYPE: 1308 PROTOTYPE:
626 CODE: 1309 CODE:
627 RETVAL = nreqs; 1310 RETVAL = eio_nreqs ();
628 OUTPUT: 1311 OUTPUT:
629 RETVAL 1312 RETVAL
630 1313
1314int
1315nready()
1316 PROTOTYPE:
1317 CODE:
1318 RETVAL = eio_nready ();
1319 OUTPUT:
1320 RETVAL
1321
1322int
1323npending()
1324 PROTOTYPE:
1325 CODE:
1326 RETVAL = eio_npending ();
1327 OUTPUT:
1328 RETVAL
1329
1330int
1331nthreads()
1332 PROTOTYPE:
1333 CODE:
1334 RETVAL = eio_nthreads ();
1335 OUTPUT:
1336 RETVAL
1337
1338int
1339fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1340 PROTOTYPE: $$$$
1341 CODE:
1342#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1343 RETVAL = posix_fadvise (fh, offset, length, advice);
1344#else
1345 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1346#endif
1347 OUTPUT:
1348 RETVAL
1349
1350ssize_t
1351sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1352 PROTOTYPE: $$$$
1353 CODE:
1354 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1355 OUTPUT:
1356 RETVAL
1357
1358void
1359mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1360 PROTOTYPE: $$$$$;$
1361 PPCODE:
1362 sv_unmagic (scalar, MMAP_MAGIC);
1363{
1364 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1365 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1366 if (addr == (void *)-1)
1367 XSRETURN_NO;
1368
1369 /* we store the length in mg_obj, as namlen is I32 :/ */
1370 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1371 ->mg_obj = (SV *)length;
1372
1373 SvUPGRADE (scalar, SVt_PV); /* nop... */
1374 if (!(prot & PROT_WRITE))
1375 SvREADONLY_on (scalar);
1376
1377 SvPVX (scalar) = (char *)addr;
1378 SvCUR_set (scalar, length);
1379 SvLEN_set (scalar, 0);
1380 SvPOK_only (scalar);
1381
1382 XSRETURN_YES;
1383}
1384
1385void
1386munmap (SV *scalar)
1387 PROTOTYPE: $
1388 CODE:
1389 sv_unmagic (scalar, MMAP_MAGIC);
1390
1391int
1392mlockall (int flags)
1393 PROTOTYPE: $
1394 CODE:
1395#if _POSIX_MEMLOCK
1396#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1397 extern int mallopt (int, int);
1398 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1399#endif
1400 mlockall (flags);
1401#else
1402 RETVAL = -1;
1403 errno = ENOSYS;
1404#endif
1405 OUTPUT:
1406 RETVAL
1407
1408int
1409munlockall ()
1410 PROTOTYPE:
1411 CODE:
1412#if _POSIX_MEMLOCK
1413 munlockall ();
1414#else
1415 RETVAL = -1;
1416 errno = ENOSYS;
1417#endif
1418 OUTPUT:
1419 RETVAL
1420
1421void _on_next_submit (SV *cb)
1422 CODE:
1423 SvREFCNT_dec (on_next_submit);
1424 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1425
1426PROTOTYPES: DISABLE
1427
1428MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1429
1430void
1431cancel (aio_req_ornot req)
1432 CODE:
1433 eio_cancel (req);
1434
1435void
1436cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1437 PPCODE:
1438{
1439 if (GIMME_V != G_VOID)
1440 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1441
1442 if (items > 1)
1443 {
1444 SV *cb_cv =get_cb (callback);
1445
1446 SvREFCNT_dec (req->callback);
1447 req->callback = SvREFCNT_inc (cb_cv);
1448 }
1449}
1450
1451MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1452
1453void
1454add (aio_req grp, ...)
1455 PPCODE:
1456{
1457 int i;
1458
1459 if (grp->int1 == 2)
1460 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1461
1462 for (i = 1; i < items; ++i )
1463 {
1464 aio_req req;
1465
1466 if (GIMME_V != G_VOID)
1467 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1468
1469 req = SvAIO_REQ (ST (i));
1470
1471 if (req)
1472 eio_grp_add (grp, req);
1473 }
1474}
1475
1476void
1477cancel_subs (aio_req_ornot req)
1478 CODE:
1479 req_cancel_subs (req);
1480
1481void
1482result (aio_req grp, ...)
1483 CODE:
1484{
1485 int i;
1486 AV *av;
1487
1488 grp->errorno = errno;
1489
1490 av = newAV ();
1491 av_extend (av, items - 1);
1492
1493 for (i = 1; i < items; ++i )
1494 av_push (av, newSVsv (ST (i)));
1495
1496 SvREFCNT_dec (grp->sv1);
1497 grp->sv1 = (SV *)av;
1498}
1499
1500void
1501errno (aio_req grp, int errorno = errno)
1502 CODE:
1503 grp->errorno = errorno;
1504
1505void
1506limit (aio_req grp, int limit)
1507 CODE:
1508 eio_grp_limit (grp, limit);
1509
1510void
1511feed (aio_req grp, SV *callback=&PL_sv_undef)
1512 CODE:
1513{
1514 SvREFCNT_dec (grp->sv2);
1515 grp->sv2 = newSVsv (callback);
1516 grp->feed = aio_grp_feed;
1517
1518 if (grp->int2 <= 0)
1519 grp->int2 = 2;
1520
1521 eio_grp_limit (grp, grp->int2);
1522}
1523

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