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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC vs.
Revision 1.272 by root, Wed Jan 2 16:32:57 2019 UTC

1#if __linux 1#include "libeio/xthread.h"
2# define _GNU_SOURCE
3#endif
4
5#define _REENTRANT 1
6 2
7#include <errno.h> 3#include <errno.h>
8 4
9#include "EXTERN.h" 5#include "EXTERN.h"
10#include "perl.h" 6#include "perl.h"
11#include "XSUB.h" 7#include "XSUB.h"
8#include "perliol.h"
12 9
13#include "autoconf/config.h" 10#if !defined mg_findext
14 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
15#include <pthread.h> 12#endif
16 13
17#include <stddef.h> 14#include <stddef.h>
15#include <stdlib.h>
18#include <errno.h> 16#include <errno.h>
19#include <sys/time.h>
20#include <sys/select.h>
21#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
22#include <sys/stat.h> 19#include <sys/stat.h>
23#include <limits.h> 20#include <limits.h>
24#include <unistd.h>
25#include <fcntl.h> 21#include <fcntl.h>
26#include <signal.h>
27#include <sched.h> 22#include <sched.h>
28 23
29#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
30# if __linux 25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
31# include <sys/sendfile.h> 88 #include <sys/select.h>
32# elif __freebsd 89 #include <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
33# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34# include <sys/uio.h> 119# include <sys/mman.h>
35# elif __hpux 120#endif
36# include <sys/socket.h> 121
37# elif __solaris /* not yet */ 122#if HAVE_ST_XTIMENSEC
123# define ATIMENSEC PL_statcache.st_atimensec
124# define MTIMENSEC PL_statcache.st_mtimensec
125# define CTIMENSEC PL_statcache.st_ctimensec
126#elif HAVE_ST_XTIMESPEC
127# define ATIMENSEC PL_statcache.st_atim.tv_nsec
128# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
129# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
130#else
131# define ATIMENSEC 0
132# define MTIMENSEC 0
133# define CTIMENSEC 0
134#endif
135
136#if HAVE_ST_BIRTHTIMENSEC
137# define BTIMESEC PL_statcache.st_birthtime
138# define BTIMENSEC PL_statcache.st_birthtimensec
139#elif HAVE_ST_BIRTHTIMESPEC
140# define BTIMESEC PL_statcache.st_birthtim.tv_sec
141# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
142#else
143# define BTIMESEC 0
144# define BTIMENSEC 0
145#endif
146
147#if HAVE_ST_GEN
148# define ST_GEN PL_statcache.st_gen
149#else
150# define ST_GEN 0
151#endif
152
153#include "schmorp.h"
154
155#if HAVE_EVENTFD
38# include <sys/sendfile.h> 156# include <sys/eventfd.h>
157#endif
158
159#if HAVE_TIMERFD
160# include <sys/timerfd.h>
161#endif
162
163#if HAVE_RLIMITS
164 #include <sys/time.h>
165 #include <sys/resource.h>
166#endif
167
168typedef SV SV8; /* byte-sv, used for argument-checking */
169typedef int aio_rfd; /* read file desriptor */
170typedef int aio_wfd; /* write file descriptor */
171
172static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
173
174#define EIO_REQ_MEMBERS \
175 SV *callback; \
176 SV *sv1, *sv2; \
177 SV *sv3, *sv4; \
178 STRLEN stroffset; \
179 SV *self;
180
181#define EIO_NO_WRAPPERS 1
182
183#include "libeio/eio.h"
184
185static int req_invoke (eio_req *req);
186#define EIO_FINISH(req) req_invoke (req)
187static void req_destroy (eio_req *grp);
188#define EIO_DESTROY(req) req_destroy (req)
189
190#include "libeio/eio.c"
191
192#if !HAVE_POSIX_FADVISE
193# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
194#endif
195
196#if !HAVE_POSIX_MADVISE
197# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#ifndef MAP_ANONYMOUS
201# ifdef MAP_ANON
202# define MAP_ANONYMOUS MAP_ANON
39# else 203# else
40# error sendfile support requested but not available 204# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41# endif 205# endif
42#endif 206#endif
43 207
44/* used for struct dirent, AIX doesn't provide it */ 208#ifndef makedev
45#ifndef NAME_MAX 209# define makedev(maj,min) (((maj) << 8) | (min))
46# define NAME_MAX 4096
47#endif 210#endif
211#ifndef major
212# define major(dev) ((dev) >> 8)
213#endif
214#ifndef minor
215# define minor(dev) ((dev) & 0xff)
216#endif
48 217
49#if __ia64 218/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
50# define STACKSIZE 65536 219#ifdef __sun
51#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 220# undef PAGESIZE
52# define STACKSIZE PTHREAD_STACK_MIN 221#endif
222
223#if PAGESIZE <= 0
224# define PAGESIZE sysconf (_SC_PAGESIZE)
225#endif
226
227/*****************************************************************************/
228
229#if !_POSIX_MAPPED_FILES
230# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
231# define munmap(addr,length) EIO_ENOSYS ()
232#endif
233
234#if !_POSIX_MEMORY_PROTECTION
235# define mprotect(addr,len,prot) EIO_ENOSYS ()
236#endif
237
238#if !MREMAP_MAYMOVE
239# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
240#endif
241
242#define FOREIGN_MAGIC PERL_MAGIC_ext
243
244static int ecb_cold
245mmap_free (pTHX_ SV *sv, MAGIC *mg)
246{
247 int old_errno = errno;
248 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
249 errno = old_errno;
250
251 mg->mg_obj = 0; /* just in case */
252
253 SvREADONLY_off (sv);
254
255 if (SvPVX (sv) != mg->mg_ptr)
256 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
257
258 SvCUR_set (sv, 0);
259 SvPVX (sv) = 0;
260 SvOK_off (sv);
261
262 return 0;
263}
264
265static MGVTBL mmap_vtbl = {
266 0, 0, 0, 0, mmap_free
267};
268
269static int ecb_cold
270sysfree_free (pTHX_ SV *sv, MAGIC *mg)
271{
272 free (mg->mg_ptr);
273 mg->mg_obj = 0; /* just in case */
274
275 SvREADONLY_off (sv);
276
277 if (SvPVX (sv) != mg->mg_ptr)
278 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
279
280 SvCUR_set (sv, 0);
281 SvPVX (sv) = 0;
282 SvOK_off (sv);
283
284 return 0;
285}
286
287static MGVTBL sysfree_vtbl = {
288 0, 0, 0, 0, sysfree_free
289};
290
291/*****************************************************************************/
292
293/* helper: set scalar to foreign ptr with custom free */
294static void
295sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
296{
297 sv_force_normal (sv);
298
299 /* we store the length in mg_obj, as namlen is I32 :/ */
300 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
301 ->mg_obj = (SV *)length;
302
303 SvUPGRADE (sv, SVt_PV); /* nop... */
304
305 if (SvLEN (sv))
306 Safefree (SvPVX (sv));
307
308 SvPVX (sv) = (char *)addr;
309 SvCUR_set (sv, length);
310 SvLEN_set (sv, 0);
311 SvPOK_only (sv);
312}
313
314static void
315sv_clear_foreign (SV *sv)
316{
317 /* todo: iterate over magic and only free ours, but of course */
318 /* the perl5porters will call that (correct) behaviour buggy */
319 sv_unmagic (sv, FOREIGN_MAGIC);
320}
321
322/*****************************************************************************/
323
324/* defines all sorts of constants to 0 unless they are already defined */
325/* also provides const_iv_ and const_niv_ macros for them */
326#include "def0.h"
327
328/*****************************************************************************/
329
330static void
331fiemap (eio_req *req)
332{
333 req->result = -1;
334
335#if HAVE_FIEMAP
336 /* assume some c99 */
337 struct fiemap *fiemap = 0;
338 size_t end_offset;
339 int count = req->int3;
340
341 req->flags |= EIO_FLAG_PTR1_FREE;
342
343 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
344 /* increase in 3.5kb steps */
345 if (count < 0)
346 count = 8;
347
348 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
349 errno = ENOMEM;
350 if (!fiemap)
351 return;
352
353 req->ptr1 = fiemap;
354
355 fiemap->fm_start = req->offs;
356 fiemap->fm_length = req->size;
357 fiemap->fm_flags = req->int2;
358 fiemap->fm_extent_count = count;
359
360 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
361 return;
362
363 if (req->int3 >= 0 /* not autosizing */
364 || !fiemap->fm_mapped_extents /* no more extents */
365 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
366 goto done;
367
368 /* else we have to loop -
369 * it would be tempting (actually I tried that first) to just query the
370 * number of extents needed, but linux often feels like not returning all
371 * extents, without telling us it left any out. this complicates
372 * this quite a bit.
373 */
374
375 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
376
377 for (;;)
378 {
379 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
380 char scratch[3072];
381 struct fiemap *incmap = (struct fiemap *)scratch;
382
383 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
384 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
385 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
386 incmap->fm_flags = fiemap->fm_flags;
387 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
388
389 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
390 return;
391
392 if (!incmap->fm_mapped_extents)
393 goto done;
394
395 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
396 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
397 errno = ENOMEM;
398 if (!fiemap)
399 return;
400
401 req->ptr1 = fiemap;
402
403 for (count = 0; count < incmap->fm_mapped_extents; ++count)
404 {
405 struct fiemap_extent *e = incmap->fm_extents + count;
406
407 if (e->fe_logical + e->fe_length >= end_offset)
408 goto done;
409
410 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
411
412 if (e->fe_flags & FIEMAP_EXTENT_LAST)
413 goto done;
414
415 }
416 }
417
418done:
419 req->result = 0;
420
53#else 421#else
54# define STACKSIZE 16384 422 errno = ENOSYS;
55#endif 423#endif
424}
56 425
57/* buffer size for various temporary buffers */ 426/*****************************************************************************/
58#define AIO_BUFSIZE 65536
59 427
60#define dBUF \ 428static int close_fd; /* dummy fd to close fds via dup2 */
61 char *aio_buf = malloc (AIO_BUFSIZE); \
62 if (!aio_buf) \
63 return -1;
64
65#define fBUF free (aio_buf)
66 429
67enum { 430enum {
68 REQ_QUIT, 431 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
69 REQ_OPEN, REQ_CLOSE,
70 REQ_READ, REQ_WRITE, REQ_READAHEAD,
71 REQ_SENDFILE,
72 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73 REQ_FSYNC, REQ_FDATASYNC,
74 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75 REQ_READDIR,
76 REQ_LINK, REQ_SYMLINK,
77 REQ_GROUP, REQ_NOP,
78 REQ_SLEEP,
79}; 432};
80 433
81#define AIO_REQ_KLASS "IO::AIO::REQ"
82#define AIO_GRP_KLASS "IO::AIO::GRP"
83
84typedef struct aio_cb
85{
86 struct aio_cb *volatile next;
87
88 SV *data, *callback;
89 SV *fh, *fh2;
90 void *dataptr, *data2ptr;
91 Stat_t *statdata;
92 off_t offset;
93 size_t length;
94 ssize_t result;
95
96 STRLEN dataoffset;
97 int type;
98 int fd, fd2;
99 int errorno;
100 mode_t mode; /* open */
101
102 unsigned char flags;
103 unsigned char pri;
104
105 SV *self; /* the perl counterpart of this request, if any */
106 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107} aio_cb;
108
109enum {
110 FLAG_CANCELLED = 0x01,
111};
112
113typedef aio_cb *aio_req; 434typedef eio_req *aio_req;
114typedef aio_cb *aio_req_ornot; 435typedef eio_req *aio_req_ornot;
436typedef eio_wd aio_wd;
115 437
116enum { 438static SV *on_next_submit;
117 PRI_MIN = -4, 439static int next_pri = EIO_PRI_DEFAULT;
118 PRI_MAX = 4,
119
120 DEFAULT_PRI = 0,
121 PRI_BIAS = -PRI_MIN,
122};
123
124static int next_pri = DEFAULT_PRI + PRI_BIAS;
125
126static int started, wanted;
127static volatile int nreqs;
128static int max_outstanding = 1<<30; 440static int max_outstanding;
129static int respipe [2];
130 441
131#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 442static s_epipe respipe;
132# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133#else
134# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135#endif
136 443
137static pthread_mutex_t reslock = AIO_MUTEX_INIT; 444static void req_destroy (aio_req req);
138static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141static volatile aio_req reqs, reqe; /* queue start, queue end */
142static volatile aio_req ress, rese; /* queue start, queue end */
143
144static void req_invoke (aio_req req); 445static void req_cancel (aio_req req);
145static void req_free (aio_req req); 446
447static void
448want_poll (void)
449{
450 /* write a dummy byte to the pipe so fh becomes ready */
451 s_epipe_signal (&respipe);
452}
453
454static void
455done_poll (void)
456{
457 /* read any signals sent by the worker threads */
458 s_epipe_drain (&respipe);
459}
146 460
147/* must be called at most once */ 461/* must be called at most once */
148static SV *req_sv (aio_req req, const char *klass) 462static SV *
463req_sv (aio_req req, HV *stash)
149{ 464{
150 if (!req->self) 465 if (!req->self)
151 { 466 {
152 req->self = (SV *)newHV (); 467 req->self = (SV *)newHV ();
153 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 468 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
154 } 469 }
155 470
156 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 471 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
157} 472}
158 473
159static aio_req SvAIO_REQ (SV *sv) 474static SV *
475newSVaio_wd (aio_wd wd)
476{
477 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
478}
479
480static aio_req
481SvAIO_REQ (SV *sv)
160{ 482{
161 MAGIC *mg; 483 MAGIC *mg;
162 484
163 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 485 if (!SvROK (sv)
486 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
487 || (SvSTASH (SvRV (sv)) != aio_grp_stash
488 && SvSTASH (SvRV (sv)) != aio_req_stash
489 && !sv_derived_from (sv, "IO::AIO::REQ")))
164 croak ("object of class " AIO_REQ_KLASS " expected"); 490 croak ("object of class IO::AIO::REQ expected");
165 491
166 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 492 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
167 493
168 return mg ? (aio_req)mg->mg_ptr : 0; 494 return mg ? (aio_req)mg->mg_ptr : 0;
169} 495}
170 496
497static aio_wd
498SvAIO_WD (SV *sv)
499{
500 if (!SvROK (sv)
501 || SvTYPE (SvRV (sv)) != SVt_PVMG
502 || SvSTASH (SvRV (sv)) != aio_wd_stash)
503 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
504
505 return (aio_wd)(long)SvIVX (SvRV (sv));
506}
507
508static SV *
509newmortalFH (int fd, int flags)
510{
511 if (fd < 0)
512 return &PL_sv_undef;
513
514 GV *gv = (GV *)sv_newmortal ();
515 char sym[64];
516 int symlen;
517
518 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
519 gv_init (gv, aio_stash, sym, symlen, 0);
520
521 symlen = snprintf (
522 sym,
523 sizeof (sym),
524 "%s&=%d",
525 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
526 fd
527 );
528
529 return do_open (gv, sym, symlen, 0, 0, 0, 0)
530 ? (SV *)gv : &PL_sv_undef;
531}
532
533static void
171static void aio_grp_feed (aio_req grp) 534aio_grp_feed (aio_req grp)
172{ 535{
173 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 536 if (grp->sv2 && SvOK (grp->sv2))
174 { 537 {
175 int old_len = grp->length; 538 dSP;
176 539
177 if (grp->fh2 && SvOK (grp->fh2)) 540 ENTER;
541 SAVETMPS;
542 PUSHMARK (SP);
543 XPUSHs (req_sv (grp, aio_grp_stash));
544 PUTBACK;
545 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
546 SPAGAIN;
547 FREETMPS;
548 LEAVE;
549 }
550}
551
552static void
553req_submit (eio_req *req)
554{
555 eio_submit (req);
556
557 if (expect_false (on_next_submit))
558 {
559 dSP;
560 SV *cb = sv_2mortal (on_next_submit);
561
562 on_next_submit = 0;
563
564 PUSHMARK (SP);
565 PUTBACK;
566 call_sv (cb, G_DISCARD | G_EVAL);
567 }
568}
569
570static int
571req_invoke (eio_req *req)
572{
573 if (req->flags & FLAG_SV2_RO_OFF)
574 SvREADONLY_off (req->sv2);
575
576 if (!EIO_CANCELLED (req) && req->callback)
577 {
578 dSP;
579 static SV *sv_result_cache; /* caches the result integer SV */
580 SV *sv_result;
581
582 ENTER;
583 SAVETMPS;
584 PUSHMARK (SP);
585 EXTEND (SP, 1);
586
587 /* do not recreate the result IV from scratch each time */
588 if (expect_true (sv_result_cache))
178 { 589 {
179 dSP; 590 sv_result = sv_result_cache; sv_result_cache = 0;
180 591 SvIV_set (sv_result, req->result);
181 ENTER; 592 SvIOK_only (sv_result);
182 SAVETMPS;
183 PUSHMARK (SP);
184 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185 PUTBACK;
186 call_sv (grp->fh2, G_VOID | G_EVAL);
187 SPAGAIN;
188 FREETMPS;
189 LEAVE;
190 } 593 }
191 594 else
192 /* stop if no progress has been made */
193 if (old_len == grp->length)
194 { 595 {
195 SvREFCNT_dec (grp->fh2); 596 sv_result = newSViv (req->result);
196 grp->fh2 = 0; 597 SvREADONLY_on (sv_result);
197 break;
198 } 598 }
599
600 switch (req->type)
601 {
602 case EIO_WD_OPEN:
603 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
604 break;
605
606 case EIO_READDIR:
607 {
608 SV *rv = &PL_sv_undef;
609
610 if (req->result >= 0)
611 {
612 int i;
613 char *names = (char *)req->ptr2;
614 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
615 AV *av = newAV ();
616
617 av_extend (av, req->result - 1);
618
619 for (i = 0; i < req->result; ++i)
620 {
621 if (req->int1 & EIO_READDIR_DENTS)
622 {
623 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
624
625 if (req->int1 & EIO_READDIR_CUSTOM2)
626 {
627 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
628 AV *avent = newAV ();
629
630 av_extend (avent, 2);
631
632 if (!sv_type [ent->type])
633 {
634 sv_type [ent->type] = newSViv (ent->type);
635 SvREADONLY_on (sv_type [ent->type]);
636 }
637
638 av_store (avent, 0, namesv);
639 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
640 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
641
642 av_store (av, i, newRV_noinc ((SV *)avent));
643 }
644 else
645 av_store (av, i, namesv);
646
647 ++ent;
648 }
649 else
650 {
651 SV *name = newSVpv (names, 0);
652 av_store (av, i, name);
653 names += SvCUR (name) + 1;
654 }
655 }
656
657 rv = sv_2mortal (newRV_noinc ((SV *)av));
658 }
659
660 PUSHs (rv);
661
662 if (req->int1 & EIO_READDIR_CUSTOM1)
663 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
664 }
665 break;
666
667 case EIO_OPEN:
668 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
669 break;
670
671 case EIO_STATVFS:
672 case EIO_FSTATVFS:
673 {
674 SV *rv = &PL_sv_undef;
675
676#ifndef _WIN32
677 if (req->result >= 0)
678 {
679 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
680 HV *hv = newHV ();
681 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
682 * chooses to make it a struct.
683 */
684 unsigned long fsid = 0;
685 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
686
687 rv = sv_2mortal (newRV_noinc ((SV *)hv));
688
689 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
690 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
691 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
692 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
693 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
694 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
695 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
696 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
697 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
698 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
699 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
700 }
701#endif
702
703 PUSHs (rv);
704 }
705
706 break;
707
708 case EIO_GROUP:
709 req->int1 = 2; /* mark group as finished */
710
711 if (req->sv1)
712 {
713 int i;
714 AV *av = (AV *)req->sv1;
715
716 EXTEND (SP, AvFILL (av) + 1);
717 for (i = 0; i <= AvFILL (av); ++i)
718 PUSHs (*av_fetch (av, i, 0));
719 }
720 break;
721
722 case EIO_NOP:
723 case EIO_BUSY:
724 break;
725
726 case EIO_READLINK:
727 case EIO_REALPATH:
728 if (req->result > 0)
729 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
730 break;
731
732 case EIO_STAT:
733 case EIO_LSTAT:
734 case EIO_FSTAT:
735 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
736
737 if (!(PL_laststatval = req->result))
738 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
739 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
740
741 PUSHs (sv_result);
742 break;
743
744 case EIO_SEEK:
745 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
746 break;
747
748 case EIO_READ:
749 {
750 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
751 *SvEND (req->sv2) = 0;
752 SvPOK_only (req->sv2);
753 SvSETMAGIC (req->sv2);
754 PUSHs (sv_result);
755 }
756 break;
757
758 case EIO_SLURP:
759 {
760 if (req->result >= 0)
761 {
762 /* if length was originally not known, we steal the malloc'ed memory */
763 if (req->flags & EIO_FLAG_PTR2_FREE)
764 {
765 req->flags &= ~EIO_FLAG_PTR2_FREE;
766 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
767 }
768 else
769 {
770 SvCUR_set (req->sv2, req->result);
771 *SvEND (req->sv2) = 0;
772 SvPOK_only (req->sv2);
773 }
774
775 SvSETMAGIC (req->sv2);
776 }
777
778 PUSHs (sv_result);
779 }
780 break;
781
782 case EIO_CUSTOM:
783 if (req->feed == fiemap)
784 {
785#if HAVE_FIEMAP
786 if (!req->result)
787 {
788 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
789
790 if (fiemap->fm_extent_count)
791 {
792 AV *av = newAV ();
793 int i;
794
795 while (fiemap->fm_mapped_extents)
796 {
797 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
798 AV *ext_av = newAV ();
799
800 av_store (ext_av, 3, newSVuv (extent->fe_flags));
801 av_store (ext_av, 2, newSVval64 (extent->fe_length));
802 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
803 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
804
805 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
806 }
807
808 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809 }
810 else
811 {
812 SvIV_set (sv_result, fiemap->fm_mapped_extents);
813 PUSHs (sv_result);
814 }
815 }
816#endif
817 }
818 else
819 PUSHs (sv_result);
820 break;
821
822 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
823 if (req->result > 0)
824 SvIV_set (sv_result, 0);
825 /* FALLTHROUGH */
826
827 default:
828 PUSHs (sv_result);
829 break;
830 }
831
832 errno = req->errorno;
833
834 PUTBACK;
835 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
836 SPAGAIN;
837
838 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
839 SvREFCNT_dec (sv_result);
840 else
841 sv_result_cache = sv_result;
842
843 FREETMPS;
844 LEAVE;
845
846 PUTBACK;
199 } 847 }
200}
201 848
202static void aio_grp_dec (aio_req grp) 849 return !!SvTRUE (ERRSV);
203{
204 --grp->length;
205
206 /* call feeder, if applicable */
207 aio_grp_feed (grp);
208
209 /* finish, if done */
210 if (!grp->length && grp->fd)
211 {
212 req_invoke (grp);
213 req_free (grp);
214 }
215} 850}
216 851
217static void poll_wait () 852static void
853req_destroy (aio_req req)
218{ 854{
219 fd_set rfd;
220
221 while (nreqs)
222 {
223 aio_req req;
224#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225 pthread_mutex_lock (&reslock);
226#endif
227 req = ress;
228#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229 pthread_mutex_unlock (&reslock);
230#endif
231
232 if (req)
233 return;
234
235 FD_ZERO(&rfd);
236 FD_SET(respipe [0], &rfd);
237
238 select (respipe [0] + 1, &rfd, 0, 0, 0);
239 }
240}
241
242static void req_invoke (aio_req req)
243{
244 dSP;
245 int errorno = errno;
246
247 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248 return;
249
250 errno = req->errorno;
251
252 ENTER;
253 SAVETMPS;
254 PUSHMARK (SP);
255 EXTEND (SP, 1);
256
257 switch (req->type)
258 {
259 case REQ_READDIR:
260 {
261 SV *rv = &PL_sv_undef;
262
263 if (req->result >= 0)
264 {
265 char *buf = req->data2ptr;
266 AV *av = newAV ();
267
268 while (req->result)
269 {
270 SV *sv = newSVpv (buf, 0);
271
272 av_push (av, sv);
273 buf += SvCUR (sv) + 1;
274 req->result--;
275 }
276
277 rv = sv_2mortal (newRV_noinc ((SV *)av));
278 }
279
280 PUSHs (rv);
281 }
282 break;
283
284 case REQ_OPEN:
285 {
286 /* convert fd to fh */
287 SV *fh;
288
289 PUSHs (sv_2mortal (newSViv (req->result)));
290 PUTBACK;
291 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292 SPAGAIN;
293
294 fh = SvREFCNT_inc (POPs);
295
296 PUSHMARK (SP);
297 XPUSHs (sv_2mortal (fh));
298 }
299 break;
300
301 case REQ_GROUP:
302 req->fd = 2; /* mark group as finished */
303
304 if (req->data)
305 {
306 int i;
307 AV *av = (AV *)req->data;
308
309 EXTEND (SP, AvFILL (av) + 1);
310 for (i = 0; i <= AvFILL (av); ++i)
311 PUSHs (*av_fetch (av, i, 0));
312 }
313 break;
314
315 case REQ_NOP:
316 case REQ_SLEEP:
317 break;
318
319 default:
320 PUSHs (sv_2mortal (newSViv (req->result)));
321 break;
322 }
323
324
325 PUTBACK;
326 call_sv (req->callback, G_VOID | G_EVAL);
327 SPAGAIN;
328
329 FREETMPS;
330 LEAVE;
331
332 errno = errorno;
333
334 if (SvTRUE (ERRSV))
335 {
336 req_free (req);
337 croak (0);
338 }
339}
340
341static void req_free (aio_req req)
342{
343 if (req->grp)
344 {
345 aio_req grp = req->grp;
346
347 /* unlink request */
348 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351 if (grp->grp_first == req)
352 grp->grp_first = req->grp_next;
353
354 aio_grp_dec (grp);
355 }
356
357 if (req->self) 855 if (req->self)
358 { 856 {
359 sv_unmagic (req->self, PERL_MAGIC_ext); 857 sv_unmagic (req->self, PERL_MAGIC_ext);
360 SvREFCNT_dec (req->self); 858 SvREFCNT_dec (req->self);
361 } 859 }
362 860
363 SvREFCNT_dec (req->data);
364 SvREFCNT_dec (req->fh); 861 SvREFCNT_dec (req->sv1);
365 SvREFCNT_dec (req->fh2); 862 SvREFCNT_dec (req->sv2);
863 SvREFCNT_dec (req->sv3);
864 SvREFCNT_dec (req->sv4);
366 SvREFCNT_dec (req->callback); 865 SvREFCNT_dec (req->callback);
367 Safefree (req->statdata);
368 866
369 if (req->type == REQ_READDIR && req->result >= 0)
370 free (req->data2ptr);
371
372 Safefree (req); 867 free (req);
373} 868}
374 869
375static void req_cancel (aio_req req) 870static void
871req_cancel_subs (aio_req grp)
376{ 872{
377 req->flags |= FLAG_CANCELLED;
378
379 if (req->type == REQ_GROUP) 873 if (grp->type != EIO_GROUP)
874 return;
875
876 SvREFCNT_dec (grp->sv2);
877 grp->sv2 = 0;
878
879 eio_grp_cancel (grp);
880}
881
882static void ecb_cold
883create_respipe (void)
884{
885 if (s_epipe_renew (&respipe))
886 croak ("IO::AIO: unable to initialize result pipe");
887}
888
889static void
890poll_wait (void)
891{
892 while (eio_nreqs ())
380 { 893 {
381 aio_req sub; 894 int size;
382 895
383 for (sub = req->grp_first; sub; sub = sub->grp_next) 896 X_LOCK (EIO_POOL->reslock);
384 req_cancel (sub); 897 size = EIO_POOL->res_queue.size;
898 X_UNLOCK (EIO_POOL->reslock);
899
900 if (size)
901 return;
902
903 etp_maybe_start_thread (EIO_POOL);
904
905 s_epipe_wait (&respipe);
385 } 906 }
386} 907}
387 908
388static int poll_cb () 909static int
910poll_cb (void)
389{ 911{
390 dSP;
391 int count = 0;
392 int do_croak = 0;
393 aio_req req;
394
395 for (;;) 912 for (;;)
396 { 913 {
397 pthread_mutex_lock (&reslock); 914 int res = eio_poll ();
398 req = ress;
399 915
400 if (req) 916 if (res > 0)
917 croak (0);
918
919 if (!max_outstanding || max_outstanding > eio_nreqs ())
920 return res;
921
922 poll_wait ();
923 }
924}
925
926static void ecb_cold
927reinit (void)
928{
929 create_respipe ();
930
931 if (eio_init (want_poll, done_poll) < 0)
932 croak ("IO::AIO: unable to initialise eio library");
933}
934
935/*****************************************************************************/
936
937static SV *
938get_cb (SV *cb_sv)
939{
940 SvGETMAGIC (cb_sv);
941 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
942}
943
944static aio_req ecb_noinline
945dreq (SV *callback)
946{
947 SV *cb_cv;
948 aio_req req;
949 int req_pri = next_pri;
950 next_pri = EIO_PRI_DEFAULT;
951
952 cb_cv = get_cb (callback);
953
954 req = calloc (sizeof (*req), 1);
955 if (!req)
956 croak ("out of memory during eio_req allocation");
957
958 req->callback = SvREFCNT_inc (cb_cv);
959 req->pri = req_pri;
960
961 return req;
962}
963
964#define dREQ \
965 aio_req req = dreq (callback); \
966
967#define REQ_SEND \
968 PUTBACK; \
969 req_submit (req); \
970 SPAGAIN; \
971 \
972 if (GIMME_V != G_VOID) \
973 XPUSHs (req_sv (req, aio_req_stash));
974
975ecb_inline void
976req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
977{
978 if (expect_false (SvROK (path)))
979 {
980 SV *rv = SvRV (path);
981 SV *wdob;
982
983 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
401 { 984 {
402 ress = req->next; 985 path = AvARRAY (rv)[1];
986 wdob = AvARRAY (rv)[0];
403 987
404 if (!ress) 988 if (SvOK (wdob))
405 { 989 {
406 /* read any signals sent by the worker threads */ 990 *wd = SvAIO_WD (wdob);
407 char buf [32]; 991 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
408 while (read (respipe [0], buf, 32) == 32)
409 ;
410
411 rese = 0;
412 } 992 }
993 else
994 *wd = EIO_INVALID_WD;
413 } 995 }
414 996 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
415 pthread_mutex_unlock (&reslock);
416
417 if (!req)
418 break;
419
420 --nreqs;
421
422 if (req->type == REQ_QUIT)
423 started--;
424 else if (req->type == REQ_GROUP && req->length)
425 { 997 {
426 req->fd = 1; /* mark request as delayed */ 998 *wd = (aio_wd)(long)SvIVX (rv);
427 continue; 999 *wdsv = SvREFCNT_inc_NN (rv);
1000 *ptr = ".";
1001 return; /* path set to "." */
428 } 1002 }
429 else 1003 else
430 { 1004 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
431 if (req->type == REQ_READ)
432 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435 SvREADONLY_off (req->data);
436
437 if (req->statdata)
438 {
439 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440 PL_laststatval = req->result;
441 PL_statcache = *(req->statdata);
442 }
443
444 req_invoke (req);
445
446 count++;
447 }
448
449 req_free (req);
450 } 1005 }
451 1006
452 return count; 1007 *pathsv = newSVsv (path);
1008 *ptr = SvPVbyte_nolen (*pathsv);
453} 1009}
454 1010
455static void *aio_proc(void *arg); 1011static void ecb_noinline
456 1012req_set_path1 (aio_req req, SV *path)
457static void start_thread (void)
458{ 1013{
459 sigset_t fullsigset, oldsigset; 1014 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
460 pthread_t tid;
461 pthread_attr_t attr;
462
463 pthread_attr_init (&attr);
464 pthread_attr_setstacksize (&attr, STACKSIZE);
465 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467 sigfillset (&fullsigset);
468 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471 started++;
472
473 sigprocmask (SIG_SETMASK, &oldsigset, 0);
474} 1015}
475 1016
476static void req_send (aio_req req) 1017static void ecb_noinline
1018req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
477{ 1019{
478 while (started < wanted && nreqs >= started) 1020 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
479 start_thread ();
480 1021
481 ++nreqs; 1022 switch (SvTYPE (rv))
482
483 pthread_mutex_lock (&reqlock);
484
485 req->next = 0;
486
487 if (reqe)
488 { 1023 {
489 reqe->next = req; 1024 case SVt_PVIO:
490 reqe = req; 1025 case SVt_PVLV:
1026 case SVt_PVGV:
1027 req->type = type_fh;
1028 req->sv1 = newSVsv (fh_or_path);
1029 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1030 break;
1031
1032 default:
1033 req->type = type_path;
1034 req_set_path1 (req, fh_or_path);
1035 break;
491 } 1036 }
492 else
493 reqe = reqs = req;
494
495 pthread_cond_signal (&reqwait);
496 pthread_mutex_unlock (&reqlock);
497
498 if (nreqs > max_outstanding)
499 for (;;)
500 {
501 poll_cb ();
502
503 if (nreqs <= max_outstanding)
504 break;
505
506 poll_wait ();
507 }
508}
509
510static void end_thread (void)
511{
512 aio_req req;
513 Newz (0, req, 1, aio_cb);
514 req->type = REQ_QUIT;
515
516 req_send (req);
517}
518
519static void min_parallel (int nthreads)
520{
521 if (wanted < nthreads)
522 wanted = nthreads;
523}
524
525static void max_parallel (int nthreads)
526{
527 int cur = started;
528
529 if (wanted > nthreads)
530 wanted = nthreads;
531
532 while (cur > wanted)
533 {
534 end_thread ();
535 cur--;
536 }
537
538 while (started > wanted)
539 {
540 poll_wait ();
541 poll_cb ();
542 }
543}
544
545static void create_pipe ()
546{
547 if (pipe (respipe))
548 croak ("unable to initialize result pipe");
549
550 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551 croak ("cannot set result pipe to nonblocking mode");
552
553 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554 croak ("cannot set result pipe to nonblocking mode");
555} 1037}
556 1038
557/*****************************************************************************/ 1039/*****************************************************************************/
558/* work around various missing functions */
559 1040
560#if !HAVE_PREADWRITE 1041static void
561# define pread aio_pread 1042ts_set (struct timespec *ts, NV value)
562# define pwrite aio_pwrite
563
564/*
565 * make our pread/pwrite safe against themselves, but not against
566 * normal read/write by using a mutex. slows down execution a lot,
567 * but that's your problem, not mine.
568 */
569static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
570
571static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572{ 1043{
573 ssize_t res; 1044 ts->tv_sec = value;
574 off_t ooffset; 1045 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
575
576 pthread_mutex_lock (&preadwritelock);
577 ooffset = lseek (fd, 0, SEEK_CUR);
578 lseek (fd, offset, SEEK_SET);
579 res = read (fd, buf, count);
580 lseek (fd, ooffset, SEEK_SET);
581 pthread_mutex_unlock (&preadwritelock);
582
583 return res;
584} 1046}
585 1047
586static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1048static NV
1049ts_get (const struct timespec *ts)
587{ 1050{
588 ssize_t res; 1051 return ts->tv_sec + ts->tv_nsec * 1e-9;
589 off_t ooffset;
590
591 pthread_mutex_lock (&preadwritelock);
592 ooffset = lseek (fd, 0, SEEK_CUR);
593 lseek (fd, offset, SEEK_SET);
594 res = write (fd, buf, count);
595 lseek (fd, offset, SEEK_SET);
596 pthread_mutex_unlock (&preadwritelock);
597
598 return res;
599} 1052}
600#endif
601 1053
602#if !HAVE_FDATASYNC 1054/*****************************************************************************/
603# define fdatasync fsync
604#endif
605 1055
606#if !HAVE_READAHEAD 1056XS(boot_IO__AIO) ecb_cold;
607# define readahead aio_readahead
608 1057
609static ssize_t readahead (int fd, off_t offset, size_t count) 1058MODULE = IO::AIO PACKAGE = IO::AIO
610{
611 dBUF;
612 1059
613 while (count > 0) 1060PROTOTYPES: ENABLE
614 {
615 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616 1061
617 pread (fd, aio_buf, len, offset); 1062BOOT:
618 offset += len;
619 count -= len;
620 }
621
622 fBUF;
623
624 errno = 0;
625}
626#endif
627
628#if !HAVE_READDIR_R
629# define readdir_r aio_readdir_r
630
631static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
632
633static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634{ 1063{
635 struct dirent *e; 1064 static const struct {
636 int errorno; 1065 const char *name;
1066 IV iv;
1067 } *civ, const_iv[] = {
1068# define const_niv(name, value) { # name, (IV) value },
1069# define const_iv(name) { # name, (IV) name },
1070# define const_eio(name) { # name, (IV) EIO_ ## name },
637 1071
638 pthread_mutex_lock (&readdirlock); 1072 /* you have to re-run ./gendef0 after adding/removing any constants here */
1073 /* the first block can be undef if missing */
1074 const_iv (ENOSYS)
1075 const_iv (EXDEV)
1076 const_iv (EBADR)
639 1077
640 e = readdir (dirp); 1078 /* for lseek */
641 errorno = errno; 1079 const_iv (SEEK_DATA)
1080 const_iv (SEEK_HOLE)
642 1081
643 if (e) 1082 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
644 { 1083 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
645 *res = ent; 1084 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
646 strcpy (ent->d_name, e->d_name); 1085 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
647 } 1086 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
648 else 1087 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
649 *res = 0;
650 1088
651 pthread_mutex_unlock (&readdirlock); 1089 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1090 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1091 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1092 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1093 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
652 1094
653 errno = errorno; 1095 /* the second block will be 0 when missing */
654 return e ? 0 : -1; 1096 const_iv (O_ACCMODE)
655}
656#endif
657 1097
658/* sendfile always needs emulation */ 1098 const_iv (O_RDONLY)
659static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1099 const_iv (O_WRONLY)
660{ 1100 const_iv (O_RDWR)
661 ssize_t res; 1101 const_iv (O_CREAT)
1102 const_iv (O_TRUNC)
1103 const_iv (O_EXCL)
1104 const_iv (O_APPEND)
662 1105
663 if (!count) 1106 const_iv (O_ASYNC)
664 return 0; 1107 const_iv (O_DIRECT)
1108 const_iv (O_NOATIME)
665 1109
666#if HAVE_SENDFILE 1110 const_iv (O_CLOEXEC)
667# if __linux 1111 const_iv (O_NOCTTY)
668 res = sendfile (ofd, ifd, &offset, count); 1112 const_iv (O_NOFOLLOW)
1113 const_iv (O_NONBLOCK)
1114 const_iv (O_EXEC)
1115 const_iv (O_SEARCH)
1116 const_iv (O_DIRECTORY)
1117 const_iv (O_DSYNC)
1118 const_iv (O_RSYNC)
1119 const_iv (O_SYNC)
1120 const_iv (O_PATH)
1121 const_iv (O_TMPFILE)
1122 const_iv (O_TTY_INIT)
669 1123
670# elif __freebsd 1124 const_iv (S_IFIFO)
671 /* 1125 const_iv (S_IFCHR)
672 * Of course, the freebsd sendfile is a dire hack with no thoughts 1126 const_iv (S_IFBLK)
673 * wasted on making it similar to other I/O functions. 1127 const_iv (S_IFLNK)
674 */ 1128 const_iv (S_IFREG)
1129 const_iv (S_IFDIR)
1130 const_iv (S_IFWHT)
1131 const_iv (S_IFSOCK)
1132 const_iv (S_IFMT)
1133
1134 const_iv (ST_RDONLY)
1135 const_iv (ST_NOSUID)
1136 const_iv (ST_NODEV)
1137 const_iv (ST_NOEXEC)
1138 const_iv (ST_SYNCHRONOUS)
1139 const_iv (ST_MANDLOCK)
1140 const_iv (ST_WRITE)
1141 const_iv (ST_APPEND)
1142 const_iv (ST_IMMUTABLE)
1143 const_iv (ST_NOATIME)
1144 const_iv (ST_NODIRATIME)
1145 const_iv (ST_RELATIME)
1146
1147 const_iv (PROT_NONE)
1148 const_iv (PROT_EXEC)
1149 const_iv (PROT_READ)
1150 const_iv (PROT_WRITE)
1151
1152 const_iv (MAP_PRIVATE)
1153 const_iv (MAP_SHARED)
1154 const_iv (MAP_FIXED)
1155 const_iv (MAP_ANONYMOUS)
1156
1157 /* linuxish */
1158 const_iv (MAP_LOCKED)
1159 const_iv (MAP_NORESERVE)
1160 const_iv (MAP_POPULATE)
1161 const_iv (MAP_NONBLOCK)
1162 const_iv (MAP_GROWSDOWN)
1163 const_iv (MAP_32BIT)
1164 const_iv (MAP_HUGETLB)
1165 const_iv (MAP_STACK)
1166
1167 const_iv (MREMAP_MAYMOVE)
1168 const_iv (MREMAP_FIXED)
1169
1170 const_iv (F_DUPFD_CLOEXEC)
1171
1172 const_iv (MSG_CMSG_CLOEXEC)
1173 const_iv (SOCK_CLOEXEC)
1174
1175 const_iv (F_OFD_GETLK)
1176 const_iv (F_OFD_SETLK)
1177 const_iv (F_OFD_GETLKW)
1178
1179 const_iv (FIFREEZE)
1180 const_iv (FITHAW)
1181 const_iv (FITRIM)
1182 const_iv (FICLONE)
1183 const_iv (FICLONERANGE)
1184 const_iv (FIDEDUPERANGE)
1185
1186 const_iv (FS_IOC_GETFLAGS)
1187 const_iv (FS_IOC_SETFLAGS)
1188 const_iv (FS_IOC_GETVERSION)
1189 const_iv (FS_IOC_SETVERSION)
1190 const_iv (FS_IOC_FIEMAP)
1191 const_iv (FS_IOC_FSGETXATTR)
1192 const_iv (FS_IOC_FSSETXATTR)
1193 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1194 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1195 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1196
1197 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1198
1199 const_iv (FS_SECRM_FL)
1200 const_iv (FS_UNRM_FL)
1201 const_iv (FS_COMPR_FL)
1202 const_iv (FS_SYNC_FL)
1203 const_iv (FS_IMMUTABLE_FL)
1204 const_iv (FS_APPEND_FL)
1205 const_iv (FS_NODUMP_FL)
1206 const_iv (FS_NOATIME_FL)
1207 const_iv (FS_DIRTY_FL)
1208 const_iv (FS_COMPRBLK_FL)
1209 const_iv (FS_NOCOMP_FL)
1210 const_iv (FS_ENCRYPT_FL)
1211 const_iv (FS_BTREE_FL)
1212 const_iv (FS_INDEX_FL)
1213 const_iv (FS_JOURNAL_DATA_FL)
1214 const_iv (FS_NOTAIL_FL)
1215 const_iv (FS_DIRSYNC_FL)
1216 const_iv (FS_TOPDIR_FL)
1217 const_iv (FS_FL_USER_MODIFIABLE)
1218
1219 const_iv (FS_XFLAG_REALTIME)
1220 const_iv (FS_XFLAG_PREALLOC)
1221 const_iv (FS_XFLAG_IMMUTABLE)
1222 const_iv (FS_XFLAG_APPEND)
1223 const_iv (FS_XFLAG_SYNC)
1224 const_iv (FS_XFLAG_NOATIME)
1225 const_iv (FS_XFLAG_NODUMP)
1226 const_iv (FS_XFLAG_RTINHERIT)
1227 const_iv (FS_XFLAG_PROJINHERIT)
1228 const_iv (FS_XFLAG_NOSYMLINKS)
1229 const_iv (FS_XFLAG_EXTSIZE)
1230 const_iv (FS_XFLAG_EXTSZINHERIT)
1231 const_iv (FS_XFLAG_NODEFRAG)
1232 const_iv (FS_XFLAG_FILESTREAM)
1233 const_iv (FS_XFLAG_DAX)
1234 const_iv (FS_XFLAG_HASATTR)
1235
1236 const_iv (FIEMAP_FLAG_SYNC)
1237 const_iv (FIEMAP_FLAG_XATTR)
1238 const_iv (FIEMAP_FLAGS_COMPAT)
1239 const_iv (FIEMAP_EXTENT_LAST)
1240 const_iv (FIEMAP_EXTENT_UNKNOWN)
1241 const_iv (FIEMAP_EXTENT_DELALLOC)
1242 const_iv (FIEMAP_EXTENT_ENCODED)
1243 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1244 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1245 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1246 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1247 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1248 const_iv (FIEMAP_EXTENT_MERGED)
1249 const_iv (FIEMAP_EXTENT_SHARED)
1250
1251 const_iv (SPLICE_F_MOVE)
1252 const_iv (SPLICE_F_NONBLOCK)
1253 const_iv (SPLICE_F_MORE)
1254 const_iv (SPLICE_F_GIFT)
1255
1256 const_iv (EFD_CLOEXEC)
1257 const_iv (EFD_NONBLOCK)
1258 const_iv (EFD_SEMAPHORE)
1259
1260 const_iv (CLOCK_REALTIME)
1261 const_iv (CLOCK_MONOTONIC)
1262 const_iv (CLOCK_BOOTTIME)
1263 const_iv (CLOCK_REALTIME_ALARM)
1264 const_iv (CLOCK_BOOTTIME_ALARM)
1265
1266 const_iv (TFD_NONBLOCK)
1267 const_iv (TFD_CLOEXEC)
1268
1269 const_iv (TFD_TIMER_ABSTIME)
1270 const_iv (TFD_TIMER_CANCEL_ON_SET)
1271
1272 /* these are libeio constants, and are independent of gendef0 */
1273 const_eio (SEEK_SET)
1274 const_eio (SEEK_CUR)
1275 const_eio (SEEK_END)
1276
1277 const_eio (MCL_FUTURE)
1278 const_eio (MCL_CURRENT)
1279 const_eio (MCL_ONFAULT)
1280
1281 const_eio (MS_ASYNC)
1282 const_eio (MS_INVALIDATE)
1283 const_eio (MS_SYNC)
1284
1285 const_eio (MT_MODIFY)
1286
1287 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1288 const_eio (SYNC_FILE_RANGE_WRITE)
1289 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1290
1291 const_eio (FALLOC_FL_KEEP_SIZE)
1292 const_eio (FALLOC_FL_PUNCH_HOLE)
1293 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1294 const_eio (FALLOC_FL_ZERO_RANGE)
1295 const_eio (FALLOC_FL_INSERT_RANGE)
1296 const_eio (FALLOC_FL_UNSHARE_RANGE)
1297
1298 const_eio (RENAME_NOREPLACE)
1299 const_eio (RENAME_EXCHANGE)
1300 const_eio (RENAME_WHITEOUT)
1301
1302 const_eio (READDIR_DENTS)
1303 const_eio (READDIR_DIRS_FIRST)
1304 const_eio (READDIR_STAT_ORDER)
1305 const_eio (READDIR_FOUND_UNKNOWN)
1306
1307 const_eio (DT_UNKNOWN)
1308 const_eio (DT_FIFO)
1309 const_eio (DT_CHR)
1310 const_eio (DT_DIR)
1311 const_eio (DT_BLK)
1312 const_eio (DT_REG)
1313 const_eio (DT_LNK)
1314 const_eio (DT_SOCK)
1315 const_eio (DT_WHT)
1316 };
1317
1318 aio_stash = gv_stashpv ("IO::AIO" , 1);
1319 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1320 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1321 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1322
1323 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1324 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1325
1326 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1327
1328 /* allocate dummy pipe fd for aio_close */
675 { 1329 {
676 off_t sbytes; 1330 int pipefd [2];
677 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678 1331
679 if (res < 0 && sbytes) 1332 if (
680 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1333#ifdef _WIN32
681 res = sbytes; 1334 _pipe (pipefd, 1, _O_BINARY) < 0
1335#else
1336 pipe (pipefd) < 0
1337 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1338#endif
1339 || close (pipefd [1]) < 0
1340 )
1341 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1342
1343 close_fd = pipefd [0];
682 } 1344 }
683 1345
684# elif __hpux 1346 reinit ();
685 res = sendfile (ofd, ifd, offset, count, 0, 0); 1347}
686 1348
687# elif __solaris 1349void
1350reinit ()
1351 PROTOTYPE:
1352
1353void
1354max_poll_reqs (unsigned int nreqs)
1355 PROTOTYPE: $
1356 CODE:
1357 eio_set_max_poll_reqs (nreqs);
1358
1359void
1360max_poll_time (double nseconds)
1361 PROTOTYPE: $
1362 CODE:
1363 eio_set_max_poll_time (nseconds);
1364
1365void
1366min_parallel (unsigned int nthreads)
1367 PROTOTYPE: $
1368 CODE:
1369 eio_set_min_parallel (nthreads);
1370
1371void
1372max_parallel (unsigned int nthreads)
1373 PROTOTYPE: $
1374 CODE:
1375 eio_set_max_parallel (nthreads);
1376
1377void
1378max_idle (unsigned int nthreads)
1379 PROTOTYPE: $
1380 CODE:
1381 eio_set_max_idle (nthreads);
1382
1383void
1384idle_timeout (unsigned int seconds)
1385 PROTOTYPE: $
1386 CODE:
1387 eio_set_idle_timeout (seconds);
1388
1389void
1390max_outstanding (unsigned int maxreqs)
1391 PROTOTYPE: $
1392 CODE:
1393 max_outstanding = maxreqs;
1394
1395void
1396aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1397 PPCODE:
1398{
1399 dREQ;
1400
1401 req->type = EIO_WD_OPEN;
1402 req_set_path1 (req, pathname);
1403
1404 REQ_SEND;
1405}
1406
1407void
1408aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1409 PPCODE:
1410{
1411 dREQ;
1412
1413 req->type = EIO_OPEN;
1414 req_set_path1 (req, pathname);
1415 req->int1 = flags;
1416 req->int2 = mode;
1417
1418 REQ_SEND;
1419}
1420
1421void
1422aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1423 ALIAS:
1424 aio_fsync = EIO_FSYNC
1425 aio_fdatasync = EIO_FDATASYNC
1426 aio_syncfs = EIO_SYNCFS
1427 PPCODE:
1428{
1429 int fd = s_fileno_croak (fh, 0);
1430 dREQ;
1431
1432 req->type = ix;
1433 req->sv1 = newSVsv (fh);
1434 req->int1 = fd;
1435
1436 REQ_SEND;
1437}
1438
1439void
1440aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1441 PPCODE:
1442{
1443 int fd = s_fileno_croak (fh, 0);
1444 dREQ;
1445
1446 req->type = EIO_SYNC_FILE_RANGE;
1447 req->sv1 = newSVsv (fh);
1448 req->int1 = fd;
1449 req->offs = offset;
1450 req->size = nbytes;
1451 req->int2 = flags;
1452
1453 REQ_SEND;
1454}
1455
1456void
1457aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1458 PPCODE:
1459{
1460 int fd = s_fileno_croak (fh, 0);
1461 dREQ;
1462
1463 req->type = EIO_FALLOCATE;
1464 req->sv1 = newSVsv (fh);
1465 req->int1 = fd;
1466 req->int2 = mode;
1467 req->offs = offset;
1468 req->size = len;
1469
1470 REQ_SEND;
1471}
1472
1473void
1474aio_close (SV *fh, SV *callback = &PL_sv_undef)
1475 PPCODE:
1476{
1477 dREQ;
1478 int fd = s_fileno_croak (fh, 0);
1479
1480 /* partially duplicate logic in s_fileno */
1481 SvGETMAGIC (fh);
1482
1483 if (SvROK (fh))
688 { 1484 {
689 struct sendfilevec vec; 1485 fh = SvRV (fh);
690 size_t sbytes; 1486 SvGETMAGIC (fh);
691
692 vec.sfv_fd = ifd;
693 vec.sfv_flag = 0;
694 vec.sfv_off = offset;
695 vec.sfv_len = count;
696
697 res = sendfilev (ofd, &vec, 1, &sbytes);
698
699 if (res < 0 && sbytes)
700 res = sbytes;
701 } 1487 }
702 1488
703# endif 1489 if (SvTYPE (fh) == SVt_PVGV)
704#else
705 res = -1;
706 errno = ENOSYS;
707#endif
708
709 if (res < 0
710 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711#if __solaris
712 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
713#endif
714 )
715 )
716 {
717 /* emulate sendfile. this is a major pain in the ass */
718 dBUF;
719
720 res = 0;
721
722 while (count)
723 {
724 ssize_t cnt;
725
726 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728 if (cnt <= 0)
729 {
730 if (cnt && !res) res = -1;
731 break;
732 }
733
734 cnt = write (ofd, aio_buf, cnt);
735
736 if (cnt <= 0)
737 {
738 if (cnt && !res) res = -1;
739 break;
740 }
741
742 offset += cnt;
743 res += cnt;
744 count -= cnt;
745 }
746
747 fBUF;
748 }
749
750 return res;
751}
752
753/* read a full directory */
754static int scandir_ (const char *path, void **namesp)
755{
756 DIR *dirp;
757 union
758 {
759 struct dirent d;
760 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
761 } *u;
762 struct dirent *entp;
763 char *name, *names;
764 int memlen = 4096;
765 int memofs = 0;
766 int res = 0;
767 int errorno;
768
769 dirp = opendir (path);
770 if (!dirp)
771 return -1;
772
773 u = malloc (sizeof (*u));
774 names = malloc (memlen);
775
776 if (u && names)
777 for (;;)
778 {
779 errno = 0;
780 readdir_r (dirp, &u->d, &entp);
781
782 if (!entp)
783 break;
784
785 name = entp->d_name;
786
787 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
788 { 1490 {
789 int len = strlen (name) + 1; 1491 /* perl filehandle */
1492 PerlIOUnix_refcnt_inc (fd);
1493 do_close ((GV *)fh, 1);
790 1494
791 res++;
792
793 while (memofs + len > memlen)
794 {
795 memlen *= 2;
796 names = realloc (names, memlen);
797 if (!names)
798 break;
799 }
800
801 memcpy (names + memofs, name, len);
802 memofs += len;
803 }
804 }
805
806 errorno = errno;
807 free (u);
808 closedir (dirp);
809
810 if (errorno)
811 {
812 free (names);
813 errno = errorno;
814 res = -1;
815 }
816
817 *namesp = (void *)names;
818 return res;
819}
820
821/*****************************************************************************/
822
823static void *aio_proc (void *thr_arg)
824{
825 aio_req req;
826 int type;
827
828 do
829 {
830 pthread_mutex_lock (&reqlock);
831
832 for (;;)
833 {
834 req = reqs;
835
836 if (reqs)
837 {
838 reqs = reqs->next;
839 if (!reqs) reqe = 0;
840 }
841
842 if (req)
843 break;
844
845 pthread_cond_wait (&reqwait, &reqlock);
846 }
847
848 pthread_mutex_unlock (&reqlock);
849
850 errno = 0; /* strictly unnecessary */
851 type = req->type; /* remember type for QUIT check */
852
853 if (!(req->flags & FLAG_CANCELLED))
854 switch (type)
855 {
856 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858
859 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867 case REQ_CLOSE: req->result = close (req->fd); break;
868 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875 case REQ_FSYNC: req->result = fsync (req->fd); break;
876 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
877
878 case REQ_SLEEP:
879 {
880 struct timeval tv;
881
882 tv.tv_sec = req->fd;
883 tv.tv_usec = req->fd2;
884
885 req->result = select (0, 0, 0, 0, &tv);
886 }
887
888 case REQ_GROUP:
889 case REQ_NOP:
890 case REQ_QUIT:
891 break;
892
893 default:
894 req->result = ENOSYS;
895 break;
896 }
897
898 req->errorno = errno;
899
900 pthread_mutex_lock (&reslock);
901
902 req->next = 0;
903
904 if (rese)
905 {
906 rese->next = req;
907 rese = req;
908 }
909 else
910 {
911 rese = ress = req;
912
913 /* write a dummy byte to the pipe so fh becomes ready */
914 write (respipe [1], &respipe, 1);
915 }
916
917 pthread_mutex_unlock (&reslock);
918 }
919 while (type != REQ_QUIT);
920
921 return 0;
922}
923
924/*****************************************************************************/
925
926static void atfork_prepare (void)
927{
928 pthread_mutex_lock (&reqlock);
929 pthread_mutex_lock (&reslock);
930#if !HAVE_PREADWRITE
931 pthread_mutex_lock (&preadwritelock);
932#endif
933#if !HAVE_READDIR_R
934 pthread_mutex_lock (&readdirlock);
935#endif
936}
937
938static void atfork_parent (void)
939{
940#if !HAVE_READDIR_R
941 pthread_mutex_unlock (&readdirlock);
942#endif
943#if !HAVE_PREADWRITE
944 pthread_mutex_unlock (&preadwritelock);
945#endif
946 pthread_mutex_unlock (&reslock);
947 pthread_mutex_unlock (&reqlock);
948}
949
950static void atfork_child (void)
951{
952 aio_req prv;
953
954 started = 0;
955
956 while (reqs)
957 {
958 prv = reqs;
959 reqs = prv->next;
960 req_free (prv);
961 }
962
963 reqs = reqe = 0;
964
965 while (ress)
966 {
967 prv = ress;
968 ress = prv->next;
969 req_free (prv);
970 }
971
972 ress = rese = 0;
973
974 close (respipe [0]);
975 close (respipe [1]);
976 create_pipe ();
977
978 atfork_parent ();
979}
980
981#define dREQ \
982 aio_req req; \
983 int req_pri = next_pri; \
984 next_pri = DEFAULT_PRI + PRI_BIAS; \
985 \
986 if (SvOK (callback) && !SvROK (callback)) \
987 croak ("callback must be undef or of reference type"); \
988 \
989 Newz (0, req, 1, aio_cb); \
990 if (!req) \
991 croak ("out of memory during aio_req allocation"); \
992 \
993 req->callback = newSVsv (callback); \
994 req->pri = req_pri
995
996#define REQ_SEND \
997 req_send (req); \
998 \
999 if (GIMME_V != G_VOID) \
1000 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001
1002MODULE = IO::AIO PACKAGE = IO::AIO
1003
1004PROTOTYPES: ENABLE
1005
1006BOOT:
1007{
1008 HV *stash = gv_stashpv ("IO::AIO", 1);
1009 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1012
1013 create_pipe ();
1014 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015}
1016
1017void
1018min_parallel (nthreads)
1019 int nthreads
1020 PROTOTYPE: $
1021
1022void
1023max_parallel (nthreads)
1024 int nthreads
1025 PROTOTYPE: $
1026
1027int
1028max_outstanding (nreqs)
1029 int nreqs
1030 PROTOTYPE: $
1031 CODE:
1032 RETVAL = max_outstanding;
1033 max_outstanding = nreqs;
1034
1035void
1036aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1037 SV * pathname
1038 int flags
1039 int mode
1040 SV * callback
1041 PROTOTYPE: $$$;$
1042 PPCODE:
1043{
1044 dREQ;
1045
1046 req->type = REQ_OPEN; 1495 req->type = EIO_CLOSE;
1047 req->data = newSVsv (pathname); 1496 req->int1 = fd;
1048 req->dataptr = SvPVbyte_nolen (req->data); 1497 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1049 req->fd = flags;
1050 req->mode = mode;
1051
1052 REQ_SEND;
1053}
1054
1055void
1056aio_close (fh,callback=&PL_sv_undef)
1057 SV * fh
1058 SV * callback
1059 PROTOTYPE: $;$
1060 ALIAS:
1061 aio_close = REQ_CLOSE
1062 aio_fsync = REQ_FSYNC
1063 aio_fdatasync = REQ_FDATASYNC
1064 PPCODE:
1065{
1066 dREQ;
1067
1068 req->type = ix;
1069 req->fh = newSVsv (fh);
1070 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071
1072 REQ_SEND (req);
1073}
1074
1075void
1076aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1077 SV * fh
1078 UV offset
1079 UV length
1080 SV * data
1081 UV dataoffset
1082 SV * callback
1083 ALIAS:
1084 aio_read = REQ_READ
1085 aio_write = REQ_WRITE
1086 PROTOTYPE: $$$$$;$
1087 PPCODE:
1088{
1089 aio_req req;
1090 STRLEN svlen;
1091 char *svptr = SvPVbyte (data, svlen);
1092
1093 SvUPGRADE (data, SVt_PV);
1094 SvPOK_on (data);
1095
1096 if (dataoffset < 0)
1097 dataoffset += svlen;
1098
1099 if (dataoffset < 0 || dataoffset > svlen)
1100 croak ("data offset outside of string");
1101
1102 if (ix == REQ_WRITE)
1103 {
1104 /* write: check length and adjust. */
1105 if (length < 0 || length + dataoffset > svlen)
1106 length = svlen - dataoffset;
1107 } 1498 }
1108 else 1499 else
1109 { 1500 {
1110 /* read: grow scalar as necessary */ 1501 /* fd number */
1111 svptr = SvGROW (data, length + dataoffset); 1502 req->type = EIO_DUP2;
1503 req->int1 = close_fd;
1504 req->sv2 = newSVsv (fh);
1505 req->int2 = fd;
1112 } 1506 }
1113 1507
1508 REQ_SEND;
1509}
1510
1511void
1512aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1513 PPCODE:
1514{
1515 int fd = s_fileno_croak (fh, 0);
1516 dREQ;
1517
1518 req->type = EIO_SEEK;
1519 req->sv1 = newSVsv (fh);
1520 req->int1 = fd;
1521 req->offs = SvVAL64 (offset);
1522 req->int2 = whence;
1523
1524 REQ_SEND;
1525}
1526
1527void
1528aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1529 ALIAS:
1530 aio_read = EIO_READ
1531 aio_write = EIO_WRITE
1532 PPCODE:
1533{
1534 STRLEN svlen;
1535 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1536 char *svptr = SvPVbyte (data, svlen);
1537 UV len = SvUV (length);
1538
1114 if (length < 0) 1539 if (dataoffset < 0)
1115 croak ("length must not be negative"); 1540 dataoffset += svlen;
1541
1542 if (dataoffset < 0 || dataoffset > svlen)
1543 croak ("dataoffset outside of data scalar");
1544
1545 if (ix == EIO_WRITE)
1546 {
1547 /* write: check length and adjust. */
1548 if (!SvOK (length) || len + dataoffset > svlen)
1549 len = svlen - dataoffset;
1550 }
1551 else
1552 {
1553 /* read: check type and grow scalar as necessary */
1554 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1555 svptr = sv_grow (data, len + dataoffset + 1);
1556 else if (SvCUR (data) < len + dataoffset)
1557 croak ("length + dataoffset outside of scalar, and cannot grow");
1558 }
1116 1559
1117 { 1560 {
1118 dREQ; 1561 dREQ;
1119 1562
1120 req->type = ix; 1563 req->type = ix;
1121 req->fh = newSVsv (fh); 1564 req->sv1 = newSVsv (fh);
1122 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1565 req->int1 = fd;
1123 : IoOFP (sv_2io (fh))); 1566 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124 req->offset = offset; 1567 req->size = len;
1125 req->length = length;
1126 req->data = SvREFCNT_inc (data); 1568 req->sv2 = SvREFCNT_inc (data);
1127 req->dataptr = (char *)svptr + dataoffset; 1569 req->ptr2 = (char *)svptr + dataoffset;
1570 req->stroffset = dataoffset;
1128 1571
1129 if (!SvREADONLY (data)) 1572 if (!SvREADONLY (data))
1130 { 1573 {
1131 SvREADONLY_on (data); 1574 SvREADONLY_on (data);
1132 req->data2ptr = (void *)data; 1575 req->flags |= FLAG_SV2_RO_OFF;
1133 } 1576 }
1134 1577
1135 REQ_SEND; 1578 REQ_SEND;
1136 } 1579 }
1137} 1580}
1138 1581
1139void 1582void
1140aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1583aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1141 SV * out_fh 1584 ALIAS:
1142 SV * in_fh 1585 aio_ioctl = EIO_IOCTL
1143 UV in_offset 1586 aio_fcntl = EIO_FCNTL
1144 UV length
1145 SV * callback
1146 PROTOTYPE: $$$$;$
1147 PPCODE: 1587 PPCODE:
1148{ 1588{
1149 dREQ; 1589 int fd = s_fileno_croak (fh, 0);
1590 char *svptr;
1150 1591
1151 req->type = REQ_SENDFILE; 1592 if (SvPOK (arg) || !SvNIOK (arg))
1152 req->fh = newSVsv (out_fh);
1153 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154 req->fh2 = newSVsv (in_fh);
1155 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156 req->offset = in_offset;
1157 req->length = length;
1158
1159 REQ_SEND;
1160}
1161
1162void
1163aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1164 SV * fh
1165 UV offset
1166 IV length
1167 SV * callback
1168 PROTOTYPE: $$$;$
1169 PPCODE:
1170{
1171 dREQ;
1172
1173 req->type = REQ_READAHEAD;
1174 req->fh = newSVsv (fh);
1175 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176 req->offset = offset;
1177 req->length = length;
1178
1179 REQ_SEND;
1180}
1181
1182void
1183aio_stat (fh_or_path,callback=&PL_sv_undef)
1184 SV * fh_or_path
1185 SV * callback
1186 ALIAS:
1187 aio_stat = REQ_STAT
1188 aio_lstat = REQ_LSTAT
1189 PPCODE:
1190{
1191 dREQ;
1192
1193 New (0, req->statdata, 1, Stat_t);
1194 if (!req->statdata)
1195 { 1593 {
1196 req_free (req); 1594 STRLEN svlen;
1197 croak ("out of memory during aio_req->statdata allocation"); 1595 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1198 } 1596#ifdef IOCPARM_LEN
1597 STRLEN need = IOCPARM_LEN (request);
1598#else
1599 STRLEN need = 256;
1600#endif
1199 1601
1200 if (SvPOK (fh_or_path)) 1602 if (svlen < need)
1201 { 1603 svptr = SvGROW (arg, need);
1202 req->type = ix;
1203 req->data = newSVsv (fh_or_path);
1204 req->dataptr = SvPVbyte_nolen (req->data);
1205 } 1604 }
1206 else 1605 else
1606 svptr = (char *)SvIV (arg);
1607
1207 { 1608 {
1609 dREQ;
1610
1208 req->type = REQ_FSTAT; 1611 req->type = ix;
1209 req->fh = newSVsv (fh_or_path); 1612 req->sv1 = newSVsv (fh);
1210 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1613 req->int1 = fd;
1614 req->int2 = (long)request;
1615 req->sv2 = SvREFCNT_inc (arg);
1616 req->ptr2 = svptr;
1617
1618 REQ_SEND;
1211 } 1619 }
1620}
1621
1622void
1623aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1624 ALIAS:
1625 aio_readlink = EIO_READLINK
1626 aio_realpath = EIO_REALPATH
1627 PPCODE:
1628{
1629 dREQ;
1630
1631 req->type = ix;
1632 req_set_path1 (req, pathname);
1212 1633
1213 REQ_SEND; 1634 REQ_SEND;
1214} 1635}
1215 1636
1216void 1637void
1217aio_unlink (pathname,callback=&PL_sv_undef) 1638aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1218 SV * pathname 1639 PPCODE:
1219 SV * callback 1640{
1641 int ifd = s_fileno_croak (in_fh , 0);
1642 int ofd = s_fileno_croak (out_fh, 1);
1643 dREQ;
1644
1645 req->type = EIO_SENDFILE;
1646 req->sv1 = newSVsv (out_fh);
1647 req->int1 = ofd;
1648 req->sv2 = newSVsv (in_fh);
1649 req->int2 = ifd;
1650 req->offs = in_offset;
1651 req->size = length;
1652
1653 REQ_SEND;
1654}
1655
1656void
1657aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1658 PPCODE:
1659{
1660 int fd = s_fileno_croak (fh, 0);
1661 dREQ;
1662
1663 req->type = EIO_READAHEAD;
1664 req->sv1 = newSVsv (fh);
1665 req->int1 = fd;
1666 req->offs = offset;
1667 req->size = length;
1668
1669 REQ_SEND;
1670}
1671
1672void
1673aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1220 ALIAS: 1674 ALIAS:
1675 aio_stat = EIO_STAT
1676 aio_lstat = EIO_LSTAT
1677 aio_statvfs = EIO_STATVFS
1678 PPCODE:
1679{
1680 dREQ;
1681
1682 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1683
1684 REQ_SEND;
1685}
1686
1687void
1688st_xtime ()
1689 ALIAS:
1690 st_atime = 0x01
1691 st_mtime = 0x02
1692 st_ctime = 0x04
1693 st_btime = 0x08
1694 st_xtime = 0x0f
1695 PPCODE:
1696 EXTEND (SP, 4);
1697 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1698 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1699 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1700 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1701
1702void
1703st_xtimensec ()
1704 ALIAS:
1705 st_atimensec = 0x01
1706 st_mtimensec = 0x02
1707 st_ctimensec = 0x04
1708 st_btimensec = 0x08
1709 st_xtimensec = 0x0f
1710 st_btimesec = 0x10
1711 st_gen = 0x20
1712 PPCODE:
1713 EXTEND (SP, 4);
1714 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1715 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1716 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1717 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1718 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1719 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1720
1721UV
1722major (UV dev)
1723 ALIAS:
1724 minor = 1
1725 CODE:
1726 RETVAL = ix ? minor (dev) : major (dev);
1727 OUTPUT:
1728 RETVAL
1729
1730UV
1731makedev (UV maj, UV min)
1732 CODE:
1733 RETVAL = makedev (maj, min);
1734 OUTPUT:
1735 RETVAL
1736
1737void
1738aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1739 PPCODE:
1740{
1741 dREQ;
1742
1743 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1744 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1745 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1746
1747 REQ_SEND;
1748}
1749
1750void
1751aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1752 PPCODE:
1753{
1754 dREQ;
1755
1756 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1757 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1758
1759 REQ_SEND;
1760}
1761
1762void
1763aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1764 PPCODE:
1765{
1766 dREQ;
1767
1768 req->int2 = mode;
1769 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1770
1771 REQ_SEND;
1772}
1773
1774void
1775aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1776 PPCODE:
1777{
1778 dREQ;
1779
1780 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1781 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1782 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1783
1784 REQ_SEND;
1785}
1786
1787void
1788aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1789 PPCODE:
1790{
1791 dREQ;
1792
1793 req->type = EIO_READDIR;
1794 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1795
1796 if (flags & EIO_READDIR_DENTS)
1797 req->int1 |= EIO_READDIR_CUSTOM2;
1798
1799 req_set_path1 (req, pathname);
1800
1801 REQ_SEND;
1802}
1803
1804void
1805aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1806 PPCODE:
1807{
1808 dREQ;
1809
1810 req->type = EIO_MKDIR;
1811 req->int2 = mode;
1812 req_set_path1 (req, pathname);
1813
1814 REQ_SEND;
1815}
1816
1817void
1818aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1819 ALIAS:
1221 aio_unlink = REQ_UNLINK 1820 aio_unlink = EIO_UNLINK
1222 aio_rmdir = REQ_RMDIR 1821 aio_rmdir = EIO_RMDIR
1223 aio_readdir = REQ_READDIR 1822 aio_readdir = EIO_READDIR
1224 PPCODE: 1823 PPCODE:
1225{ 1824{
1226 dREQ; 1825 dREQ;
1227 1826
1228 req->type = ix; 1827 req->type = ix;
1229 req->data = newSVsv (pathname); 1828 req_set_path1 (req, pathname);
1230 req->dataptr = SvPVbyte_nolen (req->data); 1829
1231
1232 REQ_SEND; 1830 REQ_SEND;
1233} 1831}
1234 1832
1235void 1833void
1236aio_link (oldpath,newpath,callback=&PL_sv_undef) 1834aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1237 SV * oldpath
1238 SV * newpath
1239 SV * callback
1240 ALIAS: 1835 ALIAS:
1241 aio_link = REQ_LINK 1836 aio_link = EIO_LINK
1242 aio_symlink = REQ_SYMLINK 1837 aio_symlink = EIO_SYMLINK
1243 aio_rename = REQ_RENAME 1838 aio_rename = EIO_RENAME
1244 PPCODE: 1839 PPCODE:
1245{ 1840{
1841 eio_wd wd2 = 0;
1246 dREQ; 1842 dREQ;
1247 1843
1248 req->type = ix; 1844 req->type = ix;
1249 req->fh = newSVsv (oldpath); 1845 req_set_path1 (req, oldpath);
1250 req->data2ptr = SvPVbyte_nolen (req->fh); 1846 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1251 req->data = newSVsv (newpath); 1847 req->int3 = (long)wd2;
1252 req->dataptr = SvPVbyte_nolen (req->data);
1253 1848
1254 REQ_SEND; 1849 REQ_SEND;
1255} 1850}
1256 1851
1257void 1852void
1258aio_sleep (delay,callback=&PL_sv_undef) 1853aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1259 double delay
1260 SV * callback
1261 PPCODE: 1854 PPCODE:
1262{ 1855{
1856 eio_wd wd2 = 0;
1263 dREQ; 1857 dREQ;
1264 1858
1265 req->type = REQ_SLEEP; 1859 req->type = EIO_RENAME;
1266 req->fd = delay < 0. ? 0 : delay; 1860 req_set_path1 (req, oldpath);
1267 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1861 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1268 1862 req->int2 = flags;
1863 req->int3 = (long)wd2;
1864
1269 REQ_SEND; 1865 REQ_SEND;
1270} 1866}
1271 1867
1272void 1868void
1273aio_group (callback=&PL_sv_undef) 1869aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1274 SV * callback 1870 PPCODE:
1275 PROTOTYPE: ;$ 1871{
1872 dREQ;
1873
1874 req->type = EIO_MKNOD;
1875 req->int2 = (mode_t)mode;
1876 req->offs = dev;
1877 req_set_path1 (req, pathname);
1878
1879 REQ_SEND;
1880}
1881
1882void
1883aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1884 ALIAS:
1885 aio_mtouch = EIO_MTOUCH
1886 aio_msync = EIO_MSYNC
1276 PPCODE: 1887 PPCODE:
1277{ 1888{
1889 STRLEN svlen;
1890 char *svptr = SvPVbyte (data, svlen);
1891 UV len = SvUV (length);
1892
1893 if (flags < 0)
1894 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1895
1896 if (offset < 0)
1897 offset += svlen;
1898
1899 if (offset < 0 || offset > svlen)
1900 croak ("offset outside of scalar");
1901
1902 if (!SvOK (length) || len + offset > svlen)
1903 len = svlen - offset;
1904
1905 {
1906 dREQ;
1907
1908 req->type = ix;
1909 req->sv2 = SvREFCNT_inc (data);
1910 req->ptr2 = (char *)svptr + offset;
1911 req->size = len;
1912 req->int1 = flags;
1913
1914 REQ_SEND;
1915 }
1916}
1917
1918void
1919aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1920 PPCODE:
1921{
1922 STRLEN svlen;
1923 char *svptr = SvPVbyte (data, svlen);
1924 UV len = SvUV (length);
1925
1926 if (offset < 0)
1927 offset += svlen;
1928
1929 if (offset < 0 || offset > svlen)
1930 croak ("offset outside of scalar");
1931
1932 if (!SvOK (length) || len + offset > svlen)
1933 len = svlen - offset;
1934
1935 {
1936 dREQ;
1937
1938 req->type = EIO_MLOCK;
1939 req->sv2 = SvREFCNT_inc (data);
1940 req->ptr2 = (char *)svptr + offset;
1941 req->size = len;
1942
1943 REQ_SEND;
1944 }
1945}
1946
1947void
1948aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1949 PPCODE:
1950{
1951 dREQ;
1952
1953 req->type = EIO_MLOCKALL;
1954 req->int1 = flags;
1955
1956 REQ_SEND;
1957}
1958
1959void
1960aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1961 PPCODE:
1962{
1963 int fd = s_fileno_croak (fh, 0);
1278 dREQ; 1964 dREQ;
1279 1965
1280 req->type = REQ_GROUP; 1966 req->type = EIO_CUSTOM;
1281 req_send (req); 1967 req->sv1 = newSVsv (fh);
1968 req->int1 = fd;
1282 1969
1283 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1970 req->feed = fiemap;
1284} 1971#if HAVE_FIEMAP
1972 /* keep our fingers crossed that the next two types are 64 bit */
1973 req->offs = start;
1974 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1975 req->int2 = flags;
1976 req->int3 = SvOK (count) ? SvIV (count) : -1;
1977#endif
1285 1978
1979 REQ_SEND;
1980}
1981
1286void 1982void
1287aio_nop (callback=&PL_sv_undef) 1983aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1288 SV * callback 1984 PPCODE:
1985{
1986 char *svptr = 0;
1987
1988 sv_clear_foreign (data);
1989
1990 if (length) /* known length, directly read into scalar */
1991 {
1992 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1993 svptr = sv_grow (data, length + 1);
1994 else if (SvCUR (data) < length)
1995 croak ("length outside of scalar, and cannot grow");
1996 else
1997 svptr = SvPVbyte_nolen (data);
1998 }
1999
2000 {
2001 dREQ;
2002
2003 req->type = EIO_SLURP;
2004 req_set_path1 (req, pathname);
2005 req->offs = offset;
2006 req->size = length;
2007 req->sv2 = SvREFCNT_inc (data);
2008 req->ptr2 = svptr;
2009
2010 if (!SvREADONLY (data))
2011 {
2012 SvREADONLY_on (data);
2013 req->flags |= FLAG_SV2_RO_OFF;
2014 }
2015
2016 REQ_SEND;
2017 }
2018}
2019
2020void
2021aio_busy (double delay, SV *callback = &PL_sv_undef)
1289 PPCODE: 2022 PPCODE:
1290{ 2023{
1291 dREQ; 2024 dREQ;
1292 2025
1293 req->type = REQ_NOP; 2026 req->type = EIO_BUSY;
2027 req->nv1 = delay < 0. ? 0. : delay;
1294 2028
1295 REQ_SEND; 2029 REQ_SEND;
1296} 2030}
1297 2031
1298#if 0
1299
1300void 2032void
1301aio_pri (int pri = DEFAULT_PRI) 2033aio_group (SV *callback = &PL_sv_undef)
2034 PPCODE:
2035{
2036 dREQ;
2037
2038 req->type = EIO_GROUP;
2039
2040 PUTBACK;
2041 req_submit (req);
2042 SPAGAIN;
2043
2044 XPUSHs (req_sv (req, aio_grp_stash));
2045}
2046
2047void
2048aio_nop (SV *callback = &PL_sv_undef)
2049 ALIAS:
2050 aio_nop = EIO_NOP
2051 aio_sync = EIO_SYNC
2052 PPCODE:
2053{
2054 dREQ;
2055
2056 req->type = ix;
2057
2058 REQ_SEND;
2059}
2060
2061int
2062aioreq_pri (int pri = NO_INIT)
1302 CODE: 2063 CODE:
2064 RETVAL = next_pri;
2065 if (items > 0)
2066 {
1303 if (pri < PRI_MIN) pri = PRI_MIN; 2067 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304 if (pri > PRI_MAX) pri = PRI_MAX; 2068 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305 next_pri = pri + PRI_BIAS; 2069 next_pri = pri;
2070 }
2071 OUTPUT:
2072 RETVAL
1306 2073
1307#endif 2074void
2075aioreq_nice (int nice = 0)
2076 CODE:
2077 nice = next_pri - nice;
2078 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2079 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2080 next_pri = nice;
1308 2081
1309void 2082void
1310flush () 2083flush ()
1311 PROTOTYPE:
1312 CODE: 2084 CODE:
1313 while (nreqs) 2085 while (eio_nreqs ())
1314 { 2086 {
1315 poll_wait (); 2087 poll_wait ();
1316 poll_cb (); 2088 poll_cb ();
1317 } 2089 }
1318 2090
1319void 2091int
1320poll() 2092poll ()
1321 PROTOTYPE:
1322 CODE: 2093 CODE:
1323 if (nreqs)
1324 {
1325 poll_wait (); 2094 poll_wait ();
1326 poll_cb (); 2095 RETVAL = poll_cb ();
1327 }
1328
1329int
1330poll_fileno()
1331 PROTOTYPE:
1332 CODE:
1333 RETVAL = respipe [0];
1334 OUTPUT: 2096 OUTPUT:
1335 RETVAL 2097 RETVAL
1336 2098
1337int 2099int
2100poll_fileno ()
2101 CODE:
2102 RETVAL = s_epipe_fd (&respipe);
2103 OUTPUT:
2104 RETVAL
2105
2106int
1338poll_cb(...) 2107poll_cb (...)
1339 PROTOTYPE: 2108 PROTOTYPE:
1340 CODE: 2109 CODE:
1341 RETVAL = poll_cb (); 2110 RETVAL = poll_cb ();
1342 OUTPUT: 2111 OUTPUT:
1343 RETVAL 2112 RETVAL
1344 2113
1345void 2114void
1346poll_wait() 2115poll_wait ()
1347 PROTOTYPE:
1348 CODE: 2116 CODE:
1349 if (nreqs)
1350 poll_wait (); 2117 poll_wait ();
1351 2118
1352int 2119int
1353nreqs() 2120nreqs ()
1354 PROTOTYPE:
1355 CODE: 2121 CODE:
1356 RETVAL = nreqs; 2122 RETVAL = eio_nreqs ();
1357 OUTPUT: 2123 OUTPUT:
1358 RETVAL 2124 RETVAL
1359 2125
2126int
2127nready ()
2128 CODE:
2129 RETVAL = eio_nready ();
2130 OUTPUT:
2131 RETVAL
2132
2133int
2134npending ()
2135 CODE:
2136 RETVAL = eio_npending ();
2137 OUTPUT:
2138 RETVAL
2139
2140int
2141nthreads ()
2142 CODE:
2143 RETVAL = eio_nthreads ();
2144 OUTPUT:
2145 RETVAL
2146
2147int
2148fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2149 CODE:
2150 RETVAL = posix_fadvise (fh, offset, length, advice);
2151 OUTPUT:
2152 RETVAL
2153
2154IV
2155sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2156 CODE:
2157 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2158 OUTPUT:
2159 RETVAL
2160
2161void
2162mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2163 PPCODE:
2164 sv_clear_foreign (scalar);
2165{
2166 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2167 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2168 if (addr == (void *)-1)
2169 XSRETURN_NO;
2170
2171 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2172
2173 if (!(prot & PROT_WRITE))
2174 SvREADONLY_on (scalar);
2175
2176 XSRETURN_YES;
2177}
2178
2179void
2180munmap (SV *scalar)
2181 CODE:
2182 sv_clear_foreign (scalar);
2183
2184SV *
2185mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2186 CODE:
2187{
2188 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2189 void *new;
2190
2191 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2192 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2193
2194 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2195
2196 RETVAL = &PL_sv_no;
2197
2198 if (new != (void *)-1)
2199 {
2200 RETVAL = new == (void *)mg->mg_ptr
2201 ? newSVpvn ("0 but true", 10)
2202 : &PL_sv_yes;
2203
2204 mg->mg_ptr = (char *)new;
2205 mg->mg_obj = (SV *)new_length;
2206
2207 SvPVX (scalar) = mg->mg_ptr;
2208 SvCUR_set (scalar, new_length);
2209 }
2210}
2211 OUTPUT:
2212 RETVAL
2213
2214int
2215madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2216 ALIAS:
2217 mprotect = 1
2218 CODE:
2219{
2220 STRLEN svlen;
2221 void *addr = SvPVbyte (scalar, svlen);
2222 STRLEN len = SvUV (length);
2223
2224 if (offset < 0)
2225 offset += svlen;
2226
2227 if (offset < 0 || offset > svlen)
2228 croak ("offset outside of scalar");
2229
2230 if (!SvOK (length) || len + offset > svlen)
2231 len = svlen - offset;
2232
2233 addr = (void *)(((intptr_t)addr) + offset);
2234 eio_page_align (&addr, &len);
2235
2236 switch (ix)
2237 {
2238 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2239 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2240 }
2241}
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2247 CODE:
2248{
2249 STRLEN svlen;
2250 void *addr = SvPVbyte (scalar, svlen);
2251 size_t len = SvUV (length);
2252
2253 if (offset < 0)
2254 offset += svlen;
2255
2256 if (offset < 0 || offset > svlen)
2257 croak ("offset outside of scalar");
2258
2259 if (!SvOK (length) || len + offset > svlen)
2260 len = svlen - offset;
2261
2262 addr = (void *)(((intptr_t)addr) + offset);
2263 eio_page_align (&addr, &len);
2264#if _POSIX_MEMLOCK_RANGE
2265 RETVAL = munlock (addr, len);
2266#else
2267 RETVAL = EIO_ENOSYS ();
2268#endif
2269}
2270 OUTPUT:
2271 RETVAL
2272
2273int
2274mlockall (int flags)
2275 PROTOTYPE: $;
2276 CODE:
2277 RETVAL = eio_mlockall_sync (flags);
2278 OUTPUT:
2279 RETVAL
2280
2281int
2282munlockall ()
2283 CODE:
2284#if _POSIX_MEMLOCK
2285 munlockall ();
2286#else
2287 RETVAL = EIO_ENOSYS ();
2288#endif
2289 OUTPUT:
2290 RETVAL
2291
2292int
2293splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2294 CODE:
2295{
2296#if HAVE_LINUX_SPLICE
2297 loff_t off_in_, off_out_;
2298 RETVAL = splice (
2299 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2300 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2301 length, flags
2302 );
2303#else
2304 RETVAL = EIO_ENOSYS ();
2305#endif
2306}
2307 OUTPUT:
2308 RETVAL
2309
2310int
2311tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2312 CODE:
2313#if HAVE_LINUX_SPLICE
2314 RETVAL = tee (rfh, wfh, length, flags);
2315#else
2316 RETVAL = EIO_ENOSYS ();
2317#endif
2318 OUTPUT:
2319 RETVAL
2320
2321int
2322pipesize (aio_rfd rfh, int new_size = -1)
2323 PROTOTYPE: $;$
2324 CODE:
2325#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2326 if (new_size >= 0)
2327 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2328 else
2329 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2330#else
2331 errno = ENOSYS;
2332 RETVAL = -1;
2333#endif
2334 OUTPUT:
2335 RETVAL
2336
2337void
2338pipe2 (int flags = 0)
2339 PROTOTYPE: ;$
2340 PPCODE:
2341{
2342 int fd[2];
2343 int res;
2344
2345 if (flags)
2346#if HAVE_PIPE2
2347 res = pipe2 (fd, flags);
2348#else
2349 res = (errno = ENOSYS, -1);
2350#endif
2351 else
2352 res = pipe (fd);
2353
2354 if (!res)
2355 {
2356 EXTEND (SP, 2);
2357 PUSHs (newmortalFH (fd[0], O_RDONLY));
2358 PUSHs (newmortalFH (fd[1], O_WRONLY));
2359 }
2360}
2361
2362void
2363eventfd (unsigned int initval = 0, int flags = 0)
2364 PPCODE:
2365{
2366 int fd;
2367#if HAVE_EVENTFD
2368 fd = eventfd (initval, flags);
2369#else
2370 fd = (errno = ENOSYS, -1);
2371#endif
2372
2373 XPUSHs (newmortalFH (fd, O_RDWR));
2374}
2375
2376void
2377timerfd_create (int clockid, int flags = 0)
2378 PPCODE:
2379{
2380 int fd;
2381#if HAVE_TIMERFD
2382 fd = timerfd_create (clockid, flags);
2383#else
2384 fd = (errno = ENOSYS, -1);
2385#endif
2386
2387 XPUSHs (newmortalFH (fd, O_RDWR));
2388}
2389
2390void
2391timerfd_settime (SV *fh, int flags, NV interval, NV value)
2392 PPCODE:
2393{
2394 int fd = s_fileno_croak (fh, 0);
2395#if HAVE_TIMERFD
2396 int res;
2397 struct itimerspec its, ots;
2398
2399 ts_set (&its.it_interval, interval);
2400 ts_set (&its.it_value , value);
2401 res = timerfd_settime (fd, flags, &its, &ots);
2402
2403 if (!res)
2404 {
2405 EXTEND (SP, 2);
2406 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2407 PUSHs (newSVnv (ts_get (&ots.it_value)));
2408 }
2409#else
2410 errno = ENOSYS;
2411#endif
2412}
2413
2414void
2415timerfd_gettime (SV *fh)
2416 PPCODE:
2417{
2418 int fd = s_fileno_croak (fh, 0);
2419#if HAVE_TIMERFD
2420 int res;
2421 struct itimerspec ots;
2422 res = timerfd_gettime (fd, &ots);
2423
2424 if (!res)
2425 {
2426 EXTEND (SP, 2);
2427 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2428 PUSHs (newSVnv (ts_get (&ots.it_value)));
2429 }
2430#else
2431 errno = ENOSYS;
2432#endif
2433}
2434
2435UV
2436get_fdlimit ()
2437 CODE:
2438#if HAVE_RLIMITS
2439 struct rlimit rl;
2440 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2441 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2442#endif
2443 XSRETURN_UNDEF;
2444 OUTPUT:
2445 RETVAL
2446
2447void
2448min_fdlimit (UV limit = 0x7fffffffU)
2449 CODE:
2450{
2451#if HAVE_RLIMITS
2452 struct rlimit rl;
2453 rlim_t orig_rlim_max;
2454 UV bit;
2455
2456 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2457 goto fail;
2458
2459 if (rl.rlim_cur == RLIM_INFINITY)
2460 XSRETURN_YES;
2461
2462 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2463
2464 if (rl.rlim_cur < limit)
2465 {
2466 rl.rlim_cur = limit;
2467
2468 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2469 rl.rlim_max = rl.rlim_cur;
2470 }
2471
2472 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2473 XSRETURN_YES;
2474
2475 if (errno == EPERM)
2476 {
2477 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2478 /* our limit overflows a system-wide limit */
2479 /* try an adaptive algorithm, but do not lower the hardlimit */
2480 rl.rlim_max = 0;
2481 for (bit = 0x40000000U; bit; bit >>= 1)
2482 {
2483 rl.rlim_max |= bit;
2484 rl.rlim_cur = rl.rlim_max;
2485
2486 /* nevr decrease the hard limit */
2487 if (rl.rlim_max < orig_rlim_max)
2488 break;
2489
2490 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2491 rl.rlim_max &= ~bit; /* too high, remove bit again */
2492 }
2493
2494 /* now, raise the soft limit to the max permitted */
2495 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2496 {
2497 rl.rlim_cur = rl.rlim_max;
2498 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2499 errno = EPERM;
2500 }
2501 }
2502#endif
2503 fail:
2504 XSRETURN_UNDEF;
2505}
2506
2507void _on_next_submit (SV *cb)
2508 CODE:
2509 SvREFCNT_dec (on_next_submit);
2510 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2511
1360PROTOTYPES: DISABLE 2512PROTOTYPES: DISABLE
2513
2514MODULE = IO::AIO PACKAGE = IO::AIO::WD
2515
2516BOOT:
2517{
2518 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2519 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2520}
2521
2522void
2523DESTROY (SV *self)
2524 CODE:
2525{
2526 aio_wd wd = SvAIO_WD (self);
2527#if HAVE_AT
2528 {
2529 SV *callback = &PL_sv_undef;
2530 dREQ; /* clobbers next_pri :/ */
2531 next_pri = req->pri; /* restore next_pri */
2532 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2533 req->type = EIO_WD_CLOSE;
2534 req->wd = wd;
2535 REQ_SEND;
2536 }
2537#else
2538 eio_wd_close_sync (wd);
2539#endif
2540}
1361 2541
1362MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2542MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363 2543
1364void 2544void
1365cancel (aio_req_ornot req) 2545cancel (aio_req_ornot req)
1366 CODE: 2546 CODE:
1367 req_cancel (req); 2547 eio_cancel (req);
1368 2548
1369void 2549void
1370cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2550cb (aio_req_ornot req, SV *callback = NO_INIT)
1371 CODE: 2551 PPCODE:
2552{
2553 if (GIMME_V != G_VOID)
2554 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2555
2556 if (items > 1)
2557 {
2558 SV *cb_cv = get_cb (callback);
2559
1372 SvREFCNT_dec (req->callback); 2560 SvREFCNT_dec (req->callback);
1373 req->callback = newSVsv (callback); 2561 req->callback = SvREFCNT_inc (cb_cv);
2562 }
2563}
1374 2564
1375MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2565MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376 2566
1377void 2567void
1378add (aio_req grp, ...) 2568add (aio_req grp, ...)
1379 PPCODE: 2569 PPCODE:
1380{ 2570{
1381 int i; 2571 int i;
1382 aio_req req;
1383 2572
1384 if (grp->fd == 2) 2573 if (grp->int1 == 2)
1385 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2574 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1386 2575
1387 for (i = 1; i < items; ++i ) 2576 for (i = 1; i < items; ++i )
1388 { 2577 {
2578 aio_req req;
2579
1389 if (GIMME_V != G_VOID) 2580 if (GIMME_V != G_VOID)
1390 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2581 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391 2582
1392 req = SvAIO_REQ (ST (i)); 2583 req = SvAIO_REQ (ST (i));
1393 2584
1394 if (req) 2585 if (req)
1395 { 2586 eio_grp_add (grp, req);
1396 ++grp->length;
1397 req->grp = grp;
1398
1399 req->grp_prev = 0;
1400 req->grp_next = grp->grp_first;
1401
1402 if (grp->grp_first)
1403 grp->grp_first->grp_prev = req;
1404
1405 grp->grp_first = req;
1406 }
1407 } 2587 }
1408} 2588}
2589
2590void
2591cancel_subs (aio_req_ornot req)
2592 CODE:
2593 req_cancel_subs (req);
1409 2594
1410void 2595void
1411result (aio_req grp, ...) 2596result (aio_req grp, ...)
1412 CODE: 2597 CODE:
1413{ 2598{
1414 int i; 2599 int i;
2600 AV *av;
2601
2602 grp->errorno = errno;
2603
1415 AV *av = newAV (); 2604 av = newAV ();
2605 av_extend (av, items - 1);
1416 2606
1417 for (i = 1; i < items; ++i ) 2607 for (i = 1; i < items; ++i )
1418 av_push (av, newSVsv (ST (i))); 2608 av_push (av, newSVsv (ST (i)));
1419 2609
1420 SvREFCNT_dec (grp->data); 2610 SvREFCNT_dec (grp->sv1);
1421 grp->data = (SV *)av; 2611 grp->sv1 = (SV *)av;
1422} 2612}
1423 2613
1424void 2614void
2615errno (aio_req grp, int errorno = errno)
2616 CODE:
2617 grp->errorno = errorno;
2618
2619void
1425feed_limit (aio_req grp, int limit) 2620limit (aio_req grp, int limit)
1426 CODE: 2621 CODE:
1427 grp->fd2 = limit; 2622 eio_grp_limit (grp, limit);
1428 aio_grp_feed (grp);
1429 2623
1430void 2624void
1431feed (aio_req grp, SV *callback=&PL_sv_undef) 2625feed (aio_req grp, SV *callback = &PL_sv_undef)
1432 CODE: 2626 CODE:
1433{ 2627{
1434 SvREFCNT_dec (grp->fh2); 2628 SvREFCNT_dec (grp->sv2);
1435 grp->fh2 = newSVsv (callback); 2629 grp->sv2 = newSVsv (callback);
2630 grp->feed = aio_grp_feed;
1436 2631
1437 if (grp->fd2 <= 0) 2632 if (grp->int2 <= 0)
1438 grp->fd2 = 2; 2633 grp->int2 = 2;
1439 2634
1440 aio_grp_feed (grp); 2635 eio_grp_limit (grp, grp->int2);
1441} 2636}
1442 2637

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