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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 1.273 by root, Mon Mar 4 10:28:38 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#if 0
823 case EIO_CLOSE:
824 PerlIOUnix_refcnt_dec (req->int1);
825 break;
826#endif
827
828 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
829 if (req->result > 0)
830 SvIV_set (sv_result, 0);
831 /* FALLTHROUGH */
832
833 default:
834 PUSHs (sv_result);
835 break;
836 }
837
838 errno = req->errorno;
839
840 PUTBACK;
841 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
842 SPAGAIN;
843
844 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
845 SvREFCNT_dec (sv_result);
846 else
847 sv_result_cache = sv_result;
848
849 FREETMPS;
850 LEAVE;
851
852 PUTBACK;
199 } 853 }
200}
201 854
202static void aio_grp_dec (aio_req grp) 855 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} 856}
216 857
217static void poll_wait () 858static void
859req_destroy (aio_req req)
218{ 860{
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) 861 if (req->self)
358 { 862 {
359 sv_unmagic (req->self, PERL_MAGIC_ext); 863 sv_unmagic (req->self, PERL_MAGIC_ext);
360 SvREFCNT_dec (req->self); 864 SvREFCNT_dec (req->self);
361 } 865 }
362 866
363 SvREFCNT_dec (req->data);
364 SvREFCNT_dec (req->fh); 867 SvREFCNT_dec (req->sv1);
365 SvREFCNT_dec (req->fh2); 868 SvREFCNT_dec (req->sv2);
869 SvREFCNT_dec (req->sv3);
870 SvREFCNT_dec (req->sv4);
366 SvREFCNT_dec (req->callback); 871 SvREFCNT_dec (req->callback);
367 Safefree (req->statdata);
368 872
369 if (req->type == REQ_READDIR && req->result >= 0)
370 free (req->data2ptr);
371
372 Safefree (req); 873 free (req);
373} 874}
374 875
375static void req_cancel (aio_req req) 876static void
877req_cancel_subs (aio_req grp)
376{ 878{
377 req->flags |= FLAG_CANCELLED;
378
379 if (req->type == REQ_GROUP) 879 if (grp->type != EIO_GROUP)
880 return;
881
882 SvREFCNT_dec (grp->sv2);
883 grp->sv2 = 0;
884
885 eio_grp_cancel (grp);
886}
887
888static void ecb_cold
889create_respipe (void)
890{
891 if (s_epipe_renew (&respipe))
892 croak ("IO::AIO: unable to initialize result pipe");
893}
894
895static void
896poll_wait (void)
897{
898 while (eio_nreqs ())
380 { 899 {
381 aio_req sub; 900 int size;
382 901
383 for (sub = req->grp_first; sub; sub = sub->grp_next) 902 X_LOCK (EIO_POOL->reslock);
384 req_cancel (sub); 903 size = EIO_POOL->res_queue.size;
904 X_UNLOCK (EIO_POOL->reslock);
905
906 if (size)
907 return;
908
909 etp_maybe_start_thread (EIO_POOL);
910
911 s_epipe_wait (&respipe);
385 } 912 }
386} 913}
387 914
388static int poll_cb () 915static int
916poll_cb (void)
389{ 917{
390 dSP;
391 int count = 0;
392 int do_croak = 0;
393 aio_req req;
394
395 for (;;) 918 for (;;)
396 { 919 {
397 pthread_mutex_lock (&reslock); 920 int res = eio_poll ();
398 req = ress;
399 921
400 if (req) 922 if (res > 0)
923 croak (0);
924
925 if (!max_outstanding || max_outstanding > eio_nreqs ())
926 return res;
927
928 poll_wait ();
929 }
930}
931
932static void ecb_cold
933reinit (void)
934{
935 create_respipe ();
936
937 if (eio_init (want_poll, done_poll) < 0)
938 croak ("IO::AIO: unable to initialise eio library");
939}
940
941/*****************************************************************************/
942
943static SV *
944get_cb (SV *cb_sv)
945{
946 SvGETMAGIC (cb_sv);
947 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
948}
949
950static aio_req ecb_noinline
951dreq (SV *callback)
952{
953 SV *cb_cv;
954 aio_req req;
955 int req_pri = next_pri;
956 next_pri = EIO_PRI_DEFAULT;
957
958 cb_cv = get_cb (callback);
959
960 req = calloc (sizeof (*req), 1);
961 if (!req)
962 croak ("out of memory during eio_req allocation");
963
964 req->callback = SvREFCNT_inc (cb_cv);
965 req->pri = req_pri;
966
967 return req;
968}
969
970#define dREQ \
971 aio_req req = dreq (callback); \
972
973#define REQ_SEND \
974 PUTBACK; \
975 req_submit (req); \
976 SPAGAIN; \
977 \
978 if (GIMME_V != G_VOID) \
979 XPUSHs (req_sv (req, aio_req_stash));
980
981ecb_inline void
982req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
983{
984 if (expect_false (SvROK (path)))
985 {
986 SV *rv = SvRV (path);
987 SV *wdob;
988
989 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
401 { 990 {
402 ress = req->next; 991 path = AvARRAY (rv)[1];
992 wdob = AvARRAY (rv)[0];
403 993
404 if (!ress) 994 if (SvOK (wdob))
405 { 995 {
406 /* read any signals sent by the worker threads */ 996 *wd = SvAIO_WD (wdob);
407 char buf [32]; 997 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
408 while (read (respipe [0], buf, 32) == 32)
409 ;
410
411 rese = 0;
412 } 998 }
999 else
1000 *wd = EIO_INVALID_WD;
413 } 1001 }
414 1002 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 { 1003 {
426 req->fd = 1; /* mark request as delayed */ 1004 *wd = (aio_wd)(long)SvIVX (rv);
427 continue; 1005 *wdsv = SvREFCNT_inc_NN (rv);
1006 *ptr = ".";
1007 return; /* path set to "." */
428 } 1008 }
429 else 1009 else
430 { 1010 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 } 1011 }
451 1012
452 return count; 1013 *pathsv = newSVsv (path);
1014 *ptr = SvPVbyte_nolen (*pathsv);
453} 1015}
454 1016
455static void *aio_proc(void *arg); 1017static void ecb_noinline
456 1018req_set_path1 (aio_req req, SV *path)
457static void start_thread (void)
458{ 1019{
459 sigset_t fullsigset, oldsigset; 1020 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} 1021}
475 1022
476static void req_send (aio_req req) 1023static void ecb_noinline
1024req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
477{ 1025{
478 while (started < wanted && nreqs >= started) 1026 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
479 start_thread ();
480 1027
481 ++nreqs; 1028 switch (SvTYPE (rv))
482
483 pthread_mutex_lock (&reqlock);
484
485 req->next = 0;
486
487 if (reqe)
488 { 1029 {
489 reqe->next = req; 1030 case SVt_PVIO:
490 reqe = req; 1031 case SVt_PVLV:
1032 case SVt_PVGV:
1033 req->type = type_fh;
1034 req->sv1 = newSVsv (fh_or_path);
1035 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1036 break;
1037
1038 default:
1039 req->type = type_path;
1040 req_set_path1 (req, fh_or_path);
1041 break;
491 } 1042 }
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} 1043}
556 1044
557/*****************************************************************************/ 1045/*****************************************************************************/
558/* work around various missing functions */
559 1046
560#if !HAVE_PREADWRITE 1047static void
561# define pread aio_pread 1048ts_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{ 1049{
573 ssize_t res; 1050 ts->tv_sec = value;
574 off_t ooffset; 1051 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} 1052}
585 1053
586static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1054static NV
1055ts_get (const struct timespec *ts)
587{ 1056{
588 ssize_t res; 1057 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} 1058}
600#endif
601 1059
602#if !HAVE_FDATASYNC 1060/*****************************************************************************/
603# define fdatasync fsync
604#endif
605 1061
606#if !HAVE_READAHEAD 1062XS(boot_IO__AIO) ecb_cold;
607# define readahead aio_readahead
608 1063
609static ssize_t readahead (int fd, off_t offset, size_t count) 1064MODULE = IO::AIO PACKAGE = IO::AIO
610{
611 dBUF;
612 1065
613 while (count > 0) 1066PROTOTYPES: ENABLE
614 {
615 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616 1067
617 pread (fd, aio_buf, len, offset); 1068BOOT:
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{ 1069{
635 struct dirent *e; 1070 static const struct {
636 int errorno; 1071 const char *name;
1072 IV iv;
1073 } *civ, const_iv[] = {
1074# define const_niv(name, value) { # name, (IV) value },
1075# define const_iv(name) { # name, (IV) name },
1076# define const_eio(name) { # name, (IV) EIO_ ## name },
637 1077
638 pthread_mutex_lock (&readdirlock); 1078 /* you have to re-run ./gendef0 after adding/removing any constants here */
1079 /* the first block can be undef if missing */
1080 const_iv (ENOSYS)
1081 const_iv (EXDEV)
1082 const_iv (EBADR)
639 1083
640 e = readdir (dirp); 1084 /* for lseek */
641 errorno = errno; 1085 const_iv (SEEK_DATA)
1086 const_iv (SEEK_HOLE)
642 1087
643 if (e) 1088 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
644 { 1089 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
645 *res = ent; 1090 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
646 strcpy (ent->d_name, e->d_name); 1091 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
647 } 1092 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
648 else 1093 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
649 *res = 0;
650 1094
651 pthread_mutex_unlock (&readdirlock); 1095 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1096 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1097 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1098 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1099 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
652 1100
653 errno = errorno; 1101 /* the second block will be 0 when missing */
654 return e ? 0 : -1; 1102 const_iv (O_ACCMODE)
655}
656#endif
657 1103
658/* sendfile always needs emulation */ 1104 const_iv (O_RDONLY)
659static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1105 const_iv (O_WRONLY)
660{ 1106 const_iv (O_RDWR)
661 ssize_t res; 1107 const_iv (O_CREAT)
1108 const_iv (O_TRUNC)
1109 const_iv (O_EXCL)
1110 const_iv (O_APPEND)
662 1111
663 if (!count) 1112 const_iv (O_ASYNC)
664 return 0; 1113 const_iv (O_DIRECT)
1114 const_iv (O_NOATIME)
665 1115
666#if HAVE_SENDFILE 1116 const_iv (O_CLOEXEC)
667# if __linux 1117 const_iv (O_NOCTTY)
668 res = sendfile (ofd, ifd, &offset, count); 1118 const_iv (O_NOFOLLOW)
1119 const_iv (O_NONBLOCK)
1120 const_iv (O_EXEC)
1121 const_iv (O_SEARCH)
1122 const_iv (O_DIRECTORY)
1123 const_iv (O_DSYNC)
1124 const_iv (O_RSYNC)
1125 const_iv (O_SYNC)
1126 const_iv (O_PATH)
1127 const_iv (O_TMPFILE)
1128 const_iv (O_TTY_INIT)
669 1129
670# elif __freebsd 1130 const_iv (S_IFIFO)
671 /* 1131 const_iv (S_IFCHR)
672 * Of course, the freebsd sendfile is a dire hack with no thoughts 1132 const_iv (S_IFBLK)
673 * wasted on making it similar to other I/O functions. 1133 const_iv (S_IFLNK)
674 */ 1134 const_iv (S_IFREG)
1135 const_iv (S_IFDIR)
1136 const_iv (S_IFWHT)
1137 const_iv (S_IFSOCK)
1138 const_iv (S_IFMT)
1139
1140 const_iv (ST_RDONLY)
1141 const_iv (ST_NOSUID)
1142 const_iv (ST_NODEV)
1143 const_iv (ST_NOEXEC)
1144 const_iv (ST_SYNCHRONOUS)
1145 const_iv (ST_MANDLOCK)
1146 const_iv (ST_WRITE)
1147 const_iv (ST_APPEND)
1148 const_iv (ST_IMMUTABLE)
1149 const_iv (ST_NOATIME)
1150 const_iv (ST_NODIRATIME)
1151 const_iv (ST_RELATIME)
1152
1153 const_iv (PROT_NONE)
1154 const_iv (PROT_EXEC)
1155 const_iv (PROT_READ)
1156 const_iv (PROT_WRITE)
1157
1158 const_iv (MAP_PRIVATE)
1159 const_iv (MAP_SHARED)
1160 const_iv (MAP_FIXED)
1161 const_iv (MAP_ANONYMOUS)
1162
1163 /* linuxish */
1164 const_iv (MAP_LOCKED)
1165 const_iv (MAP_NORESERVE)
1166 const_iv (MAP_POPULATE)
1167 const_iv (MAP_NONBLOCK)
1168 const_iv (MAP_GROWSDOWN)
1169 const_iv (MAP_32BIT)
1170 const_iv (MAP_HUGETLB)
1171 const_iv (MAP_STACK)
1172
1173 const_iv (MREMAP_MAYMOVE)
1174 const_iv (MREMAP_FIXED)
1175
1176 const_iv (F_DUPFD_CLOEXEC)
1177
1178 const_iv (MSG_CMSG_CLOEXEC)
1179 const_iv (SOCK_CLOEXEC)
1180
1181 const_iv (F_OFD_GETLK)
1182 const_iv (F_OFD_SETLK)
1183 const_iv (F_OFD_GETLKW)
1184
1185 const_iv (FIFREEZE)
1186 const_iv (FITHAW)
1187 const_iv (FITRIM)
1188 const_iv (FICLONE)
1189 const_iv (FICLONERANGE)
1190 const_iv (FIDEDUPERANGE)
1191
1192 const_iv (FS_IOC_GETFLAGS)
1193 const_iv (FS_IOC_SETFLAGS)
1194 const_iv (FS_IOC_GETVERSION)
1195 const_iv (FS_IOC_SETVERSION)
1196 const_iv (FS_IOC_FIEMAP)
1197 const_iv (FS_IOC_FSGETXATTR)
1198 const_iv (FS_IOC_FSSETXATTR)
1199 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1200 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1201 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1202
1203 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1204
1205 const_iv (FS_SECRM_FL)
1206 const_iv (FS_UNRM_FL)
1207 const_iv (FS_COMPR_FL)
1208 const_iv (FS_SYNC_FL)
1209 const_iv (FS_IMMUTABLE_FL)
1210 const_iv (FS_APPEND_FL)
1211 const_iv (FS_NODUMP_FL)
1212 const_iv (FS_NOATIME_FL)
1213 const_iv (FS_DIRTY_FL)
1214 const_iv (FS_COMPRBLK_FL)
1215 const_iv (FS_NOCOMP_FL)
1216 const_iv (FS_ENCRYPT_FL)
1217 const_iv (FS_BTREE_FL)
1218 const_iv (FS_INDEX_FL)
1219 const_iv (FS_JOURNAL_DATA_FL)
1220 const_iv (FS_NOTAIL_FL)
1221 const_iv (FS_DIRSYNC_FL)
1222 const_iv (FS_TOPDIR_FL)
1223 const_iv (FS_FL_USER_MODIFIABLE)
1224
1225 const_iv (FS_XFLAG_REALTIME)
1226 const_iv (FS_XFLAG_PREALLOC)
1227 const_iv (FS_XFLAG_IMMUTABLE)
1228 const_iv (FS_XFLAG_APPEND)
1229 const_iv (FS_XFLAG_SYNC)
1230 const_iv (FS_XFLAG_NOATIME)
1231 const_iv (FS_XFLAG_NODUMP)
1232 const_iv (FS_XFLAG_RTINHERIT)
1233 const_iv (FS_XFLAG_PROJINHERIT)
1234 const_iv (FS_XFLAG_NOSYMLINKS)
1235 const_iv (FS_XFLAG_EXTSIZE)
1236 const_iv (FS_XFLAG_EXTSZINHERIT)
1237 const_iv (FS_XFLAG_NODEFRAG)
1238 const_iv (FS_XFLAG_FILESTREAM)
1239 const_iv (FS_XFLAG_DAX)
1240 const_iv (FS_XFLAG_HASATTR)
1241
1242 const_iv (FIEMAP_FLAG_SYNC)
1243 const_iv (FIEMAP_FLAG_XATTR)
1244 const_iv (FIEMAP_FLAGS_COMPAT)
1245 const_iv (FIEMAP_EXTENT_LAST)
1246 const_iv (FIEMAP_EXTENT_UNKNOWN)
1247 const_iv (FIEMAP_EXTENT_DELALLOC)
1248 const_iv (FIEMAP_EXTENT_ENCODED)
1249 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1250 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1251 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1252 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1253 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1254 const_iv (FIEMAP_EXTENT_MERGED)
1255 const_iv (FIEMAP_EXTENT_SHARED)
1256
1257 const_iv (SPLICE_F_MOVE)
1258 const_iv (SPLICE_F_NONBLOCK)
1259 const_iv (SPLICE_F_MORE)
1260 const_iv (SPLICE_F_GIFT)
1261
1262 const_iv (EFD_CLOEXEC)
1263 const_iv (EFD_NONBLOCK)
1264 const_iv (EFD_SEMAPHORE)
1265
1266 const_iv (CLOCK_REALTIME)
1267 const_iv (CLOCK_MONOTONIC)
1268 const_iv (CLOCK_BOOTTIME)
1269 const_iv (CLOCK_REALTIME_ALARM)
1270 const_iv (CLOCK_BOOTTIME_ALARM)
1271
1272 const_iv (TFD_NONBLOCK)
1273 const_iv (TFD_CLOEXEC)
1274
1275 const_iv (TFD_TIMER_ABSTIME)
1276 const_iv (TFD_TIMER_CANCEL_ON_SET)
1277
1278 /* these are libeio constants, and are independent of gendef0 */
1279 const_eio (SEEK_SET)
1280 const_eio (SEEK_CUR)
1281 const_eio (SEEK_END)
1282
1283 const_eio (MCL_FUTURE)
1284 const_eio (MCL_CURRENT)
1285 const_eio (MCL_ONFAULT)
1286
1287 const_eio (MS_ASYNC)
1288 const_eio (MS_INVALIDATE)
1289 const_eio (MS_SYNC)
1290
1291 const_eio (MT_MODIFY)
1292
1293 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1294 const_eio (SYNC_FILE_RANGE_WRITE)
1295 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1296
1297 const_eio (FALLOC_FL_KEEP_SIZE)
1298 const_eio (FALLOC_FL_PUNCH_HOLE)
1299 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1300 const_eio (FALLOC_FL_ZERO_RANGE)
1301 const_eio (FALLOC_FL_INSERT_RANGE)
1302 const_eio (FALLOC_FL_UNSHARE_RANGE)
1303
1304 const_eio (RENAME_NOREPLACE)
1305 const_eio (RENAME_EXCHANGE)
1306 const_eio (RENAME_WHITEOUT)
1307
1308 const_eio (READDIR_DENTS)
1309 const_eio (READDIR_DIRS_FIRST)
1310 const_eio (READDIR_STAT_ORDER)
1311 const_eio (READDIR_FOUND_UNKNOWN)
1312
1313 const_eio (DT_UNKNOWN)
1314 const_eio (DT_FIFO)
1315 const_eio (DT_CHR)
1316 const_eio (DT_DIR)
1317 const_eio (DT_BLK)
1318 const_eio (DT_REG)
1319 const_eio (DT_LNK)
1320 const_eio (DT_SOCK)
1321 const_eio (DT_WHT)
1322 };
1323
1324 aio_stash = gv_stashpv ("IO::AIO" , 1);
1325 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1326 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1327 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1328
1329 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1330 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1331
1332 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1333
1334 /* allocate dummy pipe fd for aio_close */
675 { 1335 {
676 off_t sbytes; 1336 int pipefd [2];
677 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678 1337
679 if (res < 0 && sbytes) 1338 if (
680 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1339#ifdef _WIN32
681 res = sbytes; 1340 _pipe (pipefd, 1, _O_BINARY) < 0
1341#else
1342 pipe (pipefd) < 0
1343 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1344#endif
1345 || close (pipefd [1]) < 0
1346 )
1347 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1348
1349 close_fd = pipefd [0];
682 } 1350 }
683 1351
684# elif __hpux 1352 reinit ();
685 res = sendfile (ofd, ifd, offset, count, 0, 0); 1353}
686 1354
687# elif __solaris 1355void
1356reinit ()
1357 PROTOTYPE:
1358
1359void
1360max_poll_reqs (unsigned int nreqs)
1361 PROTOTYPE: $
1362 CODE:
1363 eio_set_max_poll_reqs (nreqs);
1364
1365void
1366max_poll_time (double nseconds)
1367 PROTOTYPE: $
1368 CODE:
1369 eio_set_max_poll_time (nseconds);
1370
1371void
1372min_parallel (unsigned int nthreads)
1373 PROTOTYPE: $
1374 CODE:
1375 eio_set_min_parallel (nthreads);
1376
1377void
1378max_parallel (unsigned int nthreads)
1379 PROTOTYPE: $
1380 CODE:
1381 eio_set_max_parallel (nthreads);
1382
1383void
1384max_idle (unsigned int nthreads)
1385 PROTOTYPE: $
1386 CODE:
1387 eio_set_max_idle (nthreads);
1388
1389void
1390idle_timeout (unsigned int seconds)
1391 PROTOTYPE: $
1392 CODE:
1393 eio_set_idle_timeout (seconds);
1394
1395void
1396max_outstanding (unsigned int maxreqs)
1397 PROTOTYPE: $
1398 CODE:
1399 max_outstanding = maxreqs;
1400
1401void
1402aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1403 PPCODE:
1404{
1405 dREQ;
1406
1407 req->type = EIO_WD_OPEN;
1408 req_set_path1 (req, pathname);
1409
1410 REQ_SEND;
1411}
1412
1413void
1414aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1415 PPCODE:
1416{
1417 dREQ;
1418
1419 req->type = EIO_OPEN;
1420 req_set_path1 (req, pathname);
1421 req->int1 = flags;
1422 req->int2 = mode;
1423
1424 REQ_SEND;
1425}
1426
1427void
1428aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1429 ALIAS:
1430 aio_fsync = EIO_FSYNC
1431 aio_fdatasync = EIO_FDATASYNC
1432 aio_syncfs = EIO_SYNCFS
1433 PPCODE:
1434{
1435 int fd = s_fileno_croak (fh, 0);
1436 dREQ;
1437
1438 req->type = ix;
1439 req->sv1 = newSVsv (fh);
1440 req->int1 = fd;
1441
1442 REQ_SEND;
1443}
1444
1445void
1446aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1447 PPCODE:
1448{
1449 int fd = s_fileno_croak (fh, 0);
1450 dREQ;
1451
1452 req->type = EIO_SYNC_FILE_RANGE;
1453 req->sv1 = newSVsv (fh);
1454 req->int1 = fd;
1455 req->offs = offset;
1456 req->size = nbytes;
1457 req->int2 = flags;
1458
1459 REQ_SEND;
1460}
1461
1462void
1463aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1464 PPCODE:
1465{
1466 int fd = s_fileno_croak (fh, 0);
1467 dREQ;
1468
1469 req->type = EIO_FALLOCATE;
1470 req->sv1 = newSVsv (fh);
1471 req->int1 = fd;
1472 req->int2 = mode;
1473 req->offs = offset;
1474 req->size = len;
1475
1476 REQ_SEND;
1477}
1478
1479void
1480aio_close (SV *fh, SV *callback = &PL_sv_undef)
1481 PPCODE:
1482{
1483 int fd = s_fileno_croak (fh, 0);
1484 dREQ;
1485#if 0
1486 /* partially duplicate logic in s_fileno */
1487 SvGETMAGIC (fh);
1488
1489 if (SvROK (fh))
688 { 1490 {
689 struct sendfilevec vec; 1491 fh = SvRV (fh);
690 size_t sbytes; 1492 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 } 1493 }
702 1494
703# endif 1495 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 { 1496 {
789 int len = strlen (name) + 1; 1497 /* perl filehandle */
1498 PerlIOUnix_refcnt_inc (fd);
1499 do_close ((GV *)fh, 1);
790 1500
791 res++; 1501 req->type = EIO_CLOSE;
792 1502 req->int1 = fd;
793 while (memofs + len > memlen) 1503 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
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 } 1504 }
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 { 1505 else
834 req = reqs; 1506#endif
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 { 1507 {
856 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1508 /* fd number */
857 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1509 req->type = EIO_DUP2;
858 1510 req->int1 = close_fd;
859 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1511 req->sv2 = newSVsv (fh);
860 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 1512 req->int2 = fd;
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 } 1513 }
897 1514
898 req->errorno = errno; 1515 REQ_SEND;
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} 1516}
923 1517
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 1518void
1018min_parallel (nthreads) 1519aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
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: 1520 PPCODE:
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: $$$;$
1042 PPCODE:
1043{ 1521{
1522 int fd = s_fileno_croak (fh, 0);
1044 dREQ; 1523 dREQ;
1045 1524
1046 req->type = REQ_OPEN; 1525 req->type = EIO_SEEK;
1047 req->data = newSVsv (pathname); 1526 req->sv1 = newSVsv (fh);
1048 req->dataptr = SvPVbyte_nolen (req->data); 1527 req->int1 = fd;
1049 req->fd = flags; 1528 req->offs = SvVAL64 (offset);
1050 req->mode = mode; 1529 req->int2 = whence;
1051 1530
1052 REQ_SEND; 1531 REQ_SEND;
1053} 1532}
1054 1533
1055void 1534void
1056aio_close (fh,callback=&PL_sv_undef) 1535aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1057 SV * fh
1058 SV * callback
1059 PROTOTYPE: $;$
1060 ALIAS: 1536 ALIAS:
1061 aio_close = REQ_CLOSE
1062 aio_fsync = REQ_FSYNC
1063 aio_fdatasync = REQ_FDATASYNC
1064 PPCODE:
1065{
1066 dREQ;
1067
1068 req->type = ix;
1069 req->fh = newSVsv (fh);
1070 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071
1072 REQ_SEND (req);
1073}
1074
1075void
1076aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1077 SV * fh
1078 UV offset
1079 UV length
1080 SV * data
1081 UV dataoffset
1082 SV * callback
1083 ALIAS:
1084 aio_read = REQ_READ 1537 aio_read = EIO_READ
1085 aio_write = REQ_WRITE 1538 aio_write = EIO_WRITE
1086 PROTOTYPE: $$$$$;$
1087 PPCODE: 1539 PPCODE:
1088{ 1540{
1089 aio_req req;
1090 STRLEN svlen; 1541 STRLEN svlen;
1542 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1091 char *svptr = SvPVbyte (data, svlen); 1543 char *svptr = SvPVbyte (data, svlen);
1092 1544 UV len = SvUV (length);
1093 SvUPGRADE (data, SVt_PV);
1094 SvPOK_on (data);
1095 1545
1096 if (dataoffset < 0) 1546 if (dataoffset < 0)
1097 dataoffset += svlen; 1547 dataoffset += svlen;
1098 1548
1099 if (dataoffset < 0 || dataoffset > svlen) 1549 if (dataoffset < 0 || dataoffset > svlen)
1100 croak ("data offset outside of string"); 1550 croak ("dataoffset outside of data scalar");
1101 1551
1102 if (ix == REQ_WRITE) 1552 if (ix == EIO_WRITE)
1103 { 1553 {
1104 /* write: check length and adjust. */ 1554 /* write: check length and adjust. */
1105 if (length < 0 || length + dataoffset > svlen) 1555 if (!SvOK (length) || len + dataoffset > svlen)
1106 length = svlen - dataoffset; 1556 len = svlen - dataoffset;
1107 } 1557 }
1108 else 1558 else
1109 { 1559 {
1110 /* read: grow scalar as necessary */ 1560 /* read: check type and grow scalar as necessary */
1561 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1111 svptr = SvGROW (data, length + dataoffset); 1562 svptr = sv_grow (data, len + dataoffset + 1);
1563 else if (SvCUR (data) < len + dataoffset)
1564 croak ("length + dataoffset outside of scalar, and cannot grow");
1112 } 1565 }
1113
1114 if (length < 0)
1115 croak ("length must not be negative");
1116 1566
1117 { 1567 {
1118 dREQ; 1568 dREQ;
1119 1569
1120 req->type = ix; 1570 req->type = ix;
1121 req->fh = newSVsv (fh); 1571 req->sv1 = newSVsv (fh);
1122 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1572 req->int1 = fd;
1123 : IoOFP (sv_2io (fh))); 1573 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124 req->offset = offset; 1574 req->size = len;
1125 req->length = length;
1126 req->data = SvREFCNT_inc (data); 1575 req->sv2 = SvREFCNT_inc (data);
1127 req->dataptr = (char *)svptr + dataoffset; 1576 req->ptr2 = (char *)svptr + dataoffset;
1577 req->stroffset = dataoffset;
1128 1578
1129 if (!SvREADONLY (data)) 1579 if (!SvREADONLY (data))
1130 { 1580 {
1131 SvREADONLY_on (data); 1581 SvREADONLY_on (data);
1132 req->data2ptr = (void *)data; 1582 req->flags |= FLAG_SV2_RO_OFF;
1133 } 1583 }
1134 1584
1135 REQ_SEND; 1585 REQ_SEND;
1136 } 1586 }
1137} 1587}
1138 1588
1139void 1589void
1140aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1590aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1141 SV * out_fh 1591 ALIAS:
1142 SV * in_fh 1592 aio_ioctl = EIO_IOCTL
1143 UV in_offset 1593 aio_fcntl = EIO_FCNTL
1144 UV length
1145 SV * callback
1146 PROTOTYPE: $$$$;$
1147 PPCODE: 1594 PPCODE:
1148{ 1595{
1149 dREQ; 1596 int fd = s_fileno_croak (fh, 0);
1597 char *svptr;
1150 1598
1151 req->type = REQ_SENDFILE; 1599 if (SvPOK (arg) || !SvNIOK (arg))
1152 req->fh = newSVsv (out_fh);
1153 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154 req->fh2 = newSVsv (in_fh);
1155 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156 req->offset = in_offset;
1157 req->length = length;
1158
1159 REQ_SEND;
1160}
1161
1162void
1163aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1164 SV * fh
1165 UV offset
1166 IV length
1167 SV * callback
1168 PROTOTYPE: $$$;$
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 { 1600 {
1196 req_free (req); 1601 STRLEN svlen;
1197 croak ("out of memory during aio_req->statdata allocation"); 1602 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1198 } 1603#ifdef IOCPARM_LEN
1604 STRLEN need = IOCPARM_LEN (request);
1605#else
1606 STRLEN need = 256;
1607#endif
1199 1608
1200 if (SvPOK (fh_or_path)) 1609 if (svlen < need)
1201 { 1610 svptr = SvGROW (arg, need);
1202 req->type = ix;
1203 req->data = newSVsv (fh_or_path);
1204 req->dataptr = SvPVbyte_nolen (req->data);
1205 } 1611 }
1206 else 1612 else
1613 svptr = (char *)SvIV (arg);
1614
1207 { 1615 {
1616 dREQ;
1617
1208 req->type = REQ_FSTAT; 1618 req->type = ix;
1209 req->fh = newSVsv (fh_or_path); 1619 req->sv1 = newSVsv (fh);
1210 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1620 req->int1 = fd;
1621 req->int2 = (long)request;
1622 req->sv2 = SvREFCNT_inc (arg);
1623 req->ptr2 = svptr;
1624
1625 REQ_SEND;
1211 } 1626 }
1627}
1628
1629void
1630aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1631 ALIAS:
1632 aio_readlink = EIO_READLINK
1633 aio_realpath = EIO_REALPATH
1634 PPCODE:
1635{
1636 dREQ;
1637
1638 req->type = ix;
1639 req_set_path1 (req, pathname);
1212 1640
1213 REQ_SEND; 1641 REQ_SEND;
1214} 1642}
1215 1643
1216void 1644void
1217aio_unlink (pathname,callback=&PL_sv_undef) 1645aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1218 SV * pathname 1646 PPCODE:
1219 SV * callback 1647{
1648 int ifd = s_fileno_croak (in_fh , 0);
1649 int ofd = s_fileno_croak (out_fh, 1);
1650 dREQ;
1651
1652 req->type = EIO_SENDFILE;
1653 req->sv1 = newSVsv (out_fh);
1654 req->int1 = ofd;
1655 req->sv2 = newSVsv (in_fh);
1656 req->int2 = ifd;
1657 req->offs = in_offset;
1658 req->size = length;
1659
1660 REQ_SEND;
1661}
1662
1663void
1664aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1665 PPCODE:
1666{
1667 int fd = s_fileno_croak (fh, 0);
1668 dREQ;
1669
1670 req->type = EIO_READAHEAD;
1671 req->sv1 = newSVsv (fh);
1672 req->int1 = fd;
1673 req->offs = offset;
1674 req->size = length;
1675
1676 REQ_SEND;
1677}
1678
1679void
1680aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1220 ALIAS: 1681 ALIAS:
1682 aio_stat = EIO_STAT
1683 aio_lstat = EIO_LSTAT
1684 aio_statvfs = EIO_STATVFS
1685 PPCODE:
1686{
1687 dREQ;
1688
1689 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1690
1691 REQ_SEND;
1692}
1693
1694void
1695st_xtime ()
1696 ALIAS:
1697 st_atime = 0x01
1698 st_mtime = 0x02
1699 st_ctime = 0x04
1700 st_btime = 0x08
1701 st_xtime = 0x0f
1702 PPCODE:
1703 EXTEND (SP, 4);
1704 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1705 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1706 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1707 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1708
1709void
1710st_xtimensec ()
1711 ALIAS:
1712 st_atimensec = 0x01
1713 st_mtimensec = 0x02
1714 st_ctimensec = 0x04
1715 st_btimensec = 0x08
1716 st_xtimensec = 0x0f
1717 st_btimesec = 0x10
1718 st_gen = 0x20
1719 PPCODE:
1720 EXTEND (SP, 4);
1721 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1722 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1723 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1724 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1725 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1726 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1727
1728UV
1729major (UV dev)
1730 ALIAS:
1731 minor = 1
1732 CODE:
1733 RETVAL = ix ? minor (dev) : major (dev);
1734 OUTPUT:
1735 RETVAL
1736
1737UV
1738makedev (UV maj, UV min)
1739 CODE:
1740 RETVAL = makedev (maj, min);
1741 OUTPUT:
1742 RETVAL
1743
1744void
1745aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1746 PPCODE:
1747{
1748 dREQ;
1749
1750 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1751 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1752 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1753
1754 REQ_SEND;
1755}
1756
1757void
1758aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1759 PPCODE:
1760{
1761 dREQ;
1762
1763 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1764 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1765
1766 REQ_SEND;
1767}
1768
1769void
1770aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1771 PPCODE:
1772{
1773 dREQ;
1774
1775 req->int2 = mode;
1776 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1777
1778 REQ_SEND;
1779}
1780
1781void
1782aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1783 PPCODE:
1784{
1785 dREQ;
1786
1787 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1788 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1789 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1790
1791 REQ_SEND;
1792}
1793
1794void
1795aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1796 PPCODE:
1797{
1798 dREQ;
1799
1800 req->type = EIO_READDIR;
1801 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1802
1803 if (flags & EIO_READDIR_DENTS)
1804 req->int1 |= EIO_READDIR_CUSTOM2;
1805
1806 req_set_path1 (req, pathname);
1807
1808 REQ_SEND;
1809}
1810
1811void
1812aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1813 PPCODE:
1814{
1815 dREQ;
1816
1817 req->type = EIO_MKDIR;
1818 req->int2 = mode;
1819 req_set_path1 (req, pathname);
1820
1821 REQ_SEND;
1822}
1823
1824void
1825aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1826 ALIAS:
1221 aio_unlink = REQ_UNLINK 1827 aio_unlink = EIO_UNLINK
1222 aio_rmdir = REQ_RMDIR 1828 aio_rmdir = EIO_RMDIR
1223 aio_readdir = REQ_READDIR 1829 aio_readdir = EIO_READDIR
1224 PPCODE: 1830 PPCODE:
1225{ 1831{
1226 dREQ; 1832 dREQ;
1227 1833
1228 req->type = ix; 1834 req->type = ix;
1229 req->data = newSVsv (pathname); 1835 req_set_path1 (req, pathname);
1230 req->dataptr = SvPVbyte_nolen (req->data); 1836
1231
1232 REQ_SEND; 1837 REQ_SEND;
1233} 1838}
1234 1839
1235void 1840void
1236aio_link (oldpath,newpath,callback=&PL_sv_undef) 1841aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1237 SV * oldpath
1238 SV * newpath
1239 SV * callback
1240 ALIAS: 1842 ALIAS:
1241 aio_link = REQ_LINK 1843 aio_link = EIO_LINK
1242 aio_symlink = REQ_SYMLINK 1844 aio_symlink = EIO_SYMLINK
1243 aio_rename = REQ_RENAME 1845 aio_rename = EIO_RENAME
1244 PPCODE: 1846 PPCODE:
1245{ 1847{
1848 eio_wd wd2 = 0;
1246 dREQ; 1849 dREQ;
1247 1850
1248 req->type = ix; 1851 req->type = ix;
1249 req->fh = newSVsv (oldpath); 1852 req_set_path1 (req, oldpath);
1250 req->data2ptr = SvPVbyte_nolen (req->fh); 1853 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1251 req->data = newSVsv (newpath); 1854 req->int3 = (long)wd2;
1252 req->dataptr = SvPVbyte_nolen (req->data);
1253 1855
1254 REQ_SEND; 1856 REQ_SEND;
1255} 1857}
1256 1858
1257void 1859void
1258aio_sleep (delay,callback=&PL_sv_undef) 1860aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1259 double delay
1260 SV * callback
1261 PPCODE: 1861 PPCODE:
1262{ 1862{
1863 eio_wd wd2 = 0;
1263 dREQ; 1864 dREQ;
1264 1865
1265 req->type = REQ_SLEEP; 1866 req->type = EIO_RENAME;
1266 req->fd = delay < 0. ? 0 : delay; 1867 req_set_path1 (req, oldpath);
1267 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1868 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1268 1869 req->int2 = flags;
1870 req->int3 = (long)wd2;
1871
1269 REQ_SEND; 1872 REQ_SEND;
1270} 1873}
1271 1874
1272void 1875void
1273aio_group (callback=&PL_sv_undef) 1876aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1274 SV * callback 1877 PPCODE:
1275 PROTOTYPE: ;$ 1878{
1879 dREQ;
1880
1881 req->type = EIO_MKNOD;
1882 req->int2 = (mode_t)mode;
1883 req->offs = dev;
1884 req_set_path1 (req, pathname);
1885
1886 REQ_SEND;
1887}
1888
1889void
1890aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1891 ALIAS:
1892 aio_mtouch = EIO_MTOUCH
1893 aio_msync = EIO_MSYNC
1276 PPCODE: 1894 PPCODE:
1277{ 1895{
1896 STRLEN svlen;
1897 char *svptr = SvPVbyte (data, svlen);
1898 UV len = SvUV (length);
1899
1900 if (flags < 0)
1901 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1902
1903 if (offset < 0)
1904 offset += svlen;
1905
1906 if (offset < 0 || offset > svlen)
1907 croak ("offset outside of scalar");
1908
1909 if (!SvOK (length) || len + offset > svlen)
1910 len = svlen - offset;
1911
1912 {
1913 dREQ;
1914
1915 req->type = ix;
1916 req->sv2 = SvREFCNT_inc (data);
1917 req->ptr2 = (char *)svptr + offset;
1918 req->size = len;
1919 req->int1 = flags;
1920
1921 REQ_SEND;
1922 }
1923}
1924
1925void
1926aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1927 PPCODE:
1928{
1929 STRLEN svlen;
1930 char *svptr = SvPVbyte (data, svlen);
1931 UV len = SvUV (length);
1932
1933 if (offset < 0)
1934 offset += svlen;
1935
1936 if (offset < 0 || offset > svlen)
1937 croak ("offset outside of scalar");
1938
1939 if (!SvOK (length) || len + offset > svlen)
1940 len = svlen - offset;
1941
1942 {
1943 dREQ;
1944
1945 req->type = EIO_MLOCK;
1946 req->sv2 = SvREFCNT_inc (data);
1947 req->ptr2 = (char *)svptr + offset;
1948 req->size = len;
1949
1950 REQ_SEND;
1951 }
1952}
1953
1954void
1955aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1956 PPCODE:
1957{
1958 dREQ;
1959
1960 req->type = EIO_MLOCKALL;
1961 req->int1 = flags;
1962
1963 REQ_SEND;
1964}
1965
1966void
1967aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1968 PPCODE:
1969{
1970 int fd = s_fileno_croak (fh, 0);
1278 dREQ; 1971 dREQ;
1279 1972
1280 req->type = REQ_GROUP; 1973 req->type = EIO_CUSTOM;
1281 req_send (req); 1974 req->sv1 = newSVsv (fh);
1975 req->int1 = fd;
1282 1976
1283 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1977 req->feed = fiemap;
1284} 1978#if HAVE_FIEMAP
1979 /* keep our fingers crossed that the next two types are 64 bit */
1980 req->offs = start;
1981 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1982 req->int2 = flags;
1983 req->int3 = SvOK (count) ? SvIV (count) : -1;
1984#endif
1285 1985
1986 REQ_SEND;
1987}
1988
1286void 1989void
1287aio_nop (callback=&PL_sv_undef) 1990aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1288 SV * callback 1991 PPCODE:
1992{
1993 char *svptr = 0;
1994
1995 sv_clear_foreign (data);
1996
1997 if (length) /* known length, directly read into scalar */
1998 {
1999 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2000 svptr = sv_grow (data, length + 1);
2001 else if (SvCUR (data) < length)
2002 croak ("length outside of scalar, and cannot grow");
2003 else
2004 svptr = SvPVbyte_nolen (data);
2005 }
2006
2007 {
2008 dREQ;
2009
2010 req->type = EIO_SLURP;
2011 req_set_path1 (req, pathname);
2012 req->offs = offset;
2013 req->size = length;
2014 req->sv2 = SvREFCNT_inc (data);
2015 req->ptr2 = svptr;
2016
2017 if (!SvREADONLY (data))
2018 {
2019 SvREADONLY_on (data);
2020 req->flags |= FLAG_SV2_RO_OFF;
2021 }
2022
2023 REQ_SEND;
2024 }
2025}
2026
2027void
2028aio_busy (double delay, SV *callback = &PL_sv_undef)
1289 PPCODE: 2029 PPCODE:
1290{ 2030{
1291 dREQ; 2031 dREQ;
1292 2032
1293 req->type = REQ_NOP; 2033 req->type = EIO_BUSY;
2034 req->nv1 = delay < 0. ? 0. : delay;
1294 2035
1295 REQ_SEND; 2036 REQ_SEND;
1296} 2037}
1297 2038
1298#if 0
1299
1300void 2039void
1301aio_pri (int pri = DEFAULT_PRI) 2040aio_group (SV *callback = &PL_sv_undef)
2041 PPCODE:
2042{
2043 dREQ;
2044
2045 req->type = EIO_GROUP;
2046
2047 PUTBACK;
2048 req_submit (req);
2049 SPAGAIN;
2050
2051 XPUSHs (req_sv (req, aio_grp_stash));
2052}
2053
2054void
2055aio_nop (SV *callback = &PL_sv_undef)
2056 ALIAS:
2057 aio_nop = EIO_NOP
2058 aio_sync = EIO_SYNC
2059 PPCODE:
2060{
2061 dREQ;
2062
2063 req->type = ix;
2064
2065 REQ_SEND;
2066}
2067
2068int
2069aioreq_pri (int pri = NO_INIT)
1302 CODE: 2070 CODE:
2071 RETVAL = next_pri;
2072 if (items > 0)
2073 {
1303 if (pri < PRI_MIN) pri = PRI_MIN; 2074 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304 if (pri > PRI_MAX) pri = PRI_MAX; 2075 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305 next_pri = pri + PRI_BIAS; 2076 next_pri = pri;
2077 }
2078 OUTPUT:
2079 RETVAL
1306 2080
1307#endif 2081void
2082aioreq_nice (int nice = 0)
2083 CODE:
2084 nice = next_pri - nice;
2085 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2086 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2087 next_pri = nice;
1308 2088
1309void 2089void
1310flush () 2090flush ()
1311 PROTOTYPE:
1312 CODE: 2091 CODE:
1313 while (nreqs) 2092 while (eio_nreqs ())
1314 { 2093 {
1315 poll_wait (); 2094 poll_wait ();
1316 poll_cb (); 2095 poll_cb ();
1317 } 2096 }
1318 2097
1319void 2098int
1320poll() 2099poll ()
1321 PROTOTYPE:
1322 CODE: 2100 CODE:
1323 if (nreqs)
1324 {
1325 poll_wait (); 2101 poll_wait ();
1326 poll_cb (); 2102 RETVAL = poll_cb ();
1327 }
1328
1329int
1330poll_fileno()
1331 PROTOTYPE:
1332 CODE:
1333 RETVAL = respipe [0];
1334 OUTPUT: 2103 OUTPUT:
1335 RETVAL 2104 RETVAL
1336 2105
1337int 2106int
2107poll_fileno ()
2108 CODE:
2109 RETVAL = s_epipe_fd (&respipe);
2110 OUTPUT:
2111 RETVAL
2112
2113int
1338poll_cb(...) 2114poll_cb (...)
1339 PROTOTYPE: 2115 PROTOTYPE:
1340 CODE: 2116 CODE:
1341 RETVAL = poll_cb (); 2117 RETVAL = poll_cb ();
1342 OUTPUT: 2118 OUTPUT:
1343 RETVAL 2119 RETVAL
1344 2120
1345void 2121void
1346poll_wait() 2122poll_wait ()
1347 PROTOTYPE:
1348 CODE: 2123 CODE:
1349 if (nreqs)
1350 poll_wait (); 2124 poll_wait ();
1351 2125
1352int 2126int
1353nreqs() 2127nreqs ()
1354 PROTOTYPE:
1355 CODE: 2128 CODE:
1356 RETVAL = nreqs; 2129 RETVAL = eio_nreqs ();
1357 OUTPUT: 2130 OUTPUT:
1358 RETVAL 2131 RETVAL
1359 2132
2133int
2134nready ()
2135 CODE:
2136 RETVAL = eio_nready ();
2137 OUTPUT:
2138 RETVAL
2139
2140int
2141npending ()
2142 CODE:
2143 RETVAL = eio_npending ();
2144 OUTPUT:
2145 RETVAL
2146
2147int
2148nthreads ()
2149 CODE:
2150 RETVAL = eio_nthreads ();
2151 OUTPUT:
2152 RETVAL
2153
2154int
2155fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2156 CODE:
2157 RETVAL = posix_fadvise (fh, offset, length, advice);
2158 OUTPUT:
2159 RETVAL
2160
2161IV
2162sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2163 CODE:
2164 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2165 OUTPUT:
2166 RETVAL
2167
2168void
2169mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2170 PPCODE:
2171 sv_clear_foreign (scalar);
2172{
2173 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2174 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2175 if (addr == (void *)-1)
2176 XSRETURN_NO;
2177
2178 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2179
2180 if (!(prot & PROT_WRITE))
2181 SvREADONLY_on (scalar);
2182
2183 XSRETURN_YES;
2184}
2185
2186void
2187munmap (SV *scalar)
2188 CODE:
2189 sv_clear_foreign (scalar);
2190
2191SV *
2192mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2193 CODE:
2194{
2195 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2196 void *new;
2197
2198 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2199 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2200
2201 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2202
2203 RETVAL = &PL_sv_no;
2204
2205 if (new != (void *)-1)
2206 {
2207 RETVAL = new == (void *)mg->mg_ptr
2208 ? newSVpvn ("0 but true", 10)
2209 : &PL_sv_yes;
2210
2211 mg->mg_ptr = (char *)new;
2212 mg->mg_obj = (SV *)new_length;
2213
2214 SvPVX (scalar) = mg->mg_ptr;
2215 SvCUR_set (scalar, new_length);
2216 }
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2223 ALIAS:
2224 mprotect = 1
2225 CODE:
2226{
2227 STRLEN svlen;
2228 void *addr = SvPVbyte (scalar, svlen);
2229 STRLEN len = SvUV (length);
2230
2231 if (offset < 0)
2232 offset += svlen;
2233
2234 if (offset < 0 || offset > svlen)
2235 croak ("offset outside of scalar");
2236
2237 if (!SvOK (length) || len + offset > svlen)
2238 len = svlen - offset;
2239
2240 addr = (void *)(((intptr_t)addr) + offset);
2241 eio_page_align (&addr, &len);
2242
2243 switch (ix)
2244 {
2245 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2246 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2247 }
2248}
2249 OUTPUT:
2250 RETVAL
2251
2252int
2253munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2254 CODE:
2255{
2256 STRLEN svlen;
2257 void *addr = SvPVbyte (scalar, svlen);
2258 size_t len = SvUV (length);
2259
2260 if (offset < 0)
2261 offset += svlen;
2262
2263 if (offset < 0 || offset > svlen)
2264 croak ("offset outside of scalar");
2265
2266 if (!SvOK (length) || len + offset > svlen)
2267 len = svlen - offset;
2268
2269 addr = (void *)(((intptr_t)addr) + offset);
2270 eio_page_align (&addr, &len);
2271#if _POSIX_MEMLOCK_RANGE
2272 RETVAL = munlock (addr, len);
2273#else
2274 RETVAL = EIO_ENOSYS ();
2275#endif
2276}
2277 OUTPUT:
2278 RETVAL
2279
2280int
2281mlockall (int flags)
2282 PROTOTYPE: $;
2283 CODE:
2284 RETVAL = eio_mlockall_sync (flags);
2285 OUTPUT:
2286 RETVAL
2287
2288int
2289munlockall ()
2290 CODE:
2291#if _POSIX_MEMLOCK
2292 munlockall ();
2293#else
2294 RETVAL = EIO_ENOSYS ();
2295#endif
2296 OUTPUT:
2297 RETVAL
2298
2299int
2300splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2301 CODE:
2302{
2303#if HAVE_LINUX_SPLICE
2304 loff_t off_in_, off_out_;
2305 RETVAL = splice (
2306 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2307 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2308 length, flags
2309 );
2310#else
2311 RETVAL = EIO_ENOSYS ();
2312#endif
2313}
2314 OUTPUT:
2315 RETVAL
2316
2317int
2318tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2319 CODE:
2320#if HAVE_LINUX_SPLICE
2321 RETVAL = tee (rfh, wfh, length, flags);
2322#else
2323 RETVAL = EIO_ENOSYS ();
2324#endif
2325 OUTPUT:
2326 RETVAL
2327
2328int
2329pipesize (aio_rfd rfh, int new_size = -1)
2330 PROTOTYPE: $;$
2331 CODE:
2332#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2333 if (new_size >= 0)
2334 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2335 else
2336 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2337#else
2338 errno = ENOSYS;
2339 RETVAL = -1;
2340#endif
2341 OUTPUT:
2342 RETVAL
2343
2344void
2345pipe2 (int flags = 0)
2346 PROTOTYPE: ;$
2347 PPCODE:
2348{
2349 int fd[2];
2350 int res;
2351
2352 if (flags)
2353#if HAVE_PIPE2
2354 res = pipe2 (fd, flags);
2355#else
2356 res = (errno = ENOSYS, -1);
2357#endif
2358 else
2359 res = pipe (fd);
2360
2361 if (!res)
2362 {
2363 EXTEND (SP, 2);
2364 PUSHs (newmortalFH (fd[0], O_RDONLY));
2365 PUSHs (newmortalFH (fd[1], O_WRONLY));
2366 }
2367}
2368
2369void
2370eventfd (unsigned int initval = 0, int flags = 0)
2371 PPCODE:
2372{
2373 int fd;
2374#if HAVE_EVENTFD
2375 fd = eventfd (initval, flags);
2376#else
2377 fd = (errno = ENOSYS, -1);
2378#endif
2379
2380 XPUSHs (newmortalFH (fd, O_RDWR));
2381}
2382
2383void
2384timerfd_create (int clockid, int flags = 0)
2385 PPCODE:
2386{
2387 int fd;
2388#if HAVE_TIMERFD
2389 fd = timerfd_create (clockid, flags);
2390#else
2391 fd = (errno = ENOSYS, -1);
2392#endif
2393
2394 XPUSHs (newmortalFH (fd, O_RDWR));
2395}
2396
2397void
2398timerfd_settime (SV *fh, int flags, NV interval, NV value)
2399 PPCODE:
2400{
2401 int fd = s_fileno_croak (fh, 0);
2402#if HAVE_TIMERFD
2403 int res;
2404 struct itimerspec its, ots;
2405
2406 ts_set (&its.it_interval, interval);
2407 ts_set (&its.it_value , value);
2408 res = timerfd_settime (fd, flags, &its, &ots);
2409
2410 if (!res)
2411 {
2412 EXTEND (SP, 2);
2413 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2414 PUSHs (newSVnv (ts_get (&ots.it_value)));
2415 }
2416#else
2417 errno = ENOSYS;
2418#endif
2419}
2420
2421void
2422timerfd_gettime (SV *fh)
2423 PPCODE:
2424{
2425 int fd = s_fileno_croak (fh, 0);
2426#if HAVE_TIMERFD
2427 int res;
2428 struct itimerspec ots;
2429 res = timerfd_gettime (fd, &ots);
2430
2431 if (!res)
2432 {
2433 EXTEND (SP, 2);
2434 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2435 PUSHs (newSVnv (ts_get (&ots.it_value)));
2436 }
2437#else
2438 errno = ENOSYS;
2439#endif
2440}
2441
2442UV
2443get_fdlimit ()
2444 CODE:
2445#if HAVE_RLIMITS
2446 struct rlimit rl;
2447 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2448 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2449#endif
2450 XSRETURN_UNDEF;
2451 OUTPUT:
2452 RETVAL
2453
2454void
2455min_fdlimit (UV limit = 0x7fffffffU)
2456 CODE:
2457{
2458#if HAVE_RLIMITS
2459 struct rlimit rl;
2460 rlim_t orig_rlim_max;
2461 UV bit;
2462
2463 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2464 goto fail;
2465
2466 if (rl.rlim_cur == RLIM_INFINITY)
2467 XSRETURN_YES;
2468
2469 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2470
2471 if (rl.rlim_cur < limit)
2472 {
2473 rl.rlim_cur = limit;
2474
2475 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2476 rl.rlim_max = rl.rlim_cur;
2477 }
2478
2479 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2480 XSRETURN_YES;
2481
2482 if (errno == EPERM)
2483 {
2484 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2485 /* our limit overflows a system-wide limit */
2486 /* try an adaptive algorithm, but do not lower the hardlimit */
2487 rl.rlim_max = 0;
2488 for (bit = 0x40000000U; bit; bit >>= 1)
2489 {
2490 rl.rlim_max |= bit;
2491 rl.rlim_cur = rl.rlim_max;
2492
2493 /* nevr decrease the hard limit */
2494 if (rl.rlim_max < orig_rlim_max)
2495 break;
2496
2497 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2498 rl.rlim_max &= ~bit; /* too high, remove bit again */
2499 }
2500
2501 /* now, raise the soft limit to the max permitted */
2502 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2503 {
2504 rl.rlim_cur = rl.rlim_max;
2505 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2506 errno = EPERM;
2507 }
2508 }
2509#endif
2510 fail:
2511 XSRETURN_UNDEF;
2512}
2513
2514void _on_next_submit (SV *cb)
2515 CODE:
2516 SvREFCNT_dec (on_next_submit);
2517 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2518
1360PROTOTYPES: DISABLE 2519PROTOTYPES: DISABLE
2520
2521MODULE = IO::AIO PACKAGE = IO::AIO::WD
2522
2523BOOT:
2524{
2525 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2526 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2527}
2528
2529void
2530DESTROY (SV *self)
2531 CODE:
2532{
2533 aio_wd wd = SvAIO_WD (self);
2534#if HAVE_AT
2535 {
2536 SV *callback = &PL_sv_undef;
2537 dREQ; /* clobbers next_pri :/ */
2538 next_pri = req->pri; /* restore next_pri */
2539 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2540 req->type = EIO_WD_CLOSE;
2541 req->wd = wd;
2542 REQ_SEND;
2543 }
2544#else
2545 eio_wd_close_sync (wd);
2546#endif
2547}
1361 2548
1362MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2549MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363 2550
1364void 2551void
1365cancel (aio_req_ornot req) 2552cancel (aio_req_ornot req)
1366 CODE: 2553 CODE:
1367 req_cancel (req); 2554 eio_cancel (req);
1368 2555
1369void 2556void
1370cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2557cb (aio_req_ornot req, SV *callback = NO_INIT)
1371 CODE: 2558 PPCODE:
2559{
2560 if (GIMME_V != G_VOID)
2561 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2562
2563 if (items > 1)
2564 {
2565 SV *cb_cv = get_cb (callback);
2566
1372 SvREFCNT_dec (req->callback); 2567 SvREFCNT_dec (req->callback);
1373 req->callback = newSVsv (callback); 2568 req->callback = SvREFCNT_inc (cb_cv);
2569 }
2570}
1374 2571
1375MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2572MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376 2573
1377void 2574void
1378add (aio_req grp, ...) 2575add (aio_req grp, ...)
1379 PPCODE: 2576 PPCODE:
1380{ 2577{
1381 int i; 2578 int i;
1382 aio_req req;
1383 2579
1384 if (grp->fd == 2) 2580 if (grp->int1 == 2)
1385 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2581 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1386 2582
1387 for (i = 1; i < items; ++i ) 2583 for (i = 1; i < items; ++i )
1388 { 2584 {
2585 aio_req req;
2586
1389 if (GIMME_V != G_VOID) 2587 if (GIMME_V != G_VOID)
1390 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2588 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391 2589
1392 req = SvAIO_REQ (ST (i)); 2590 req = SvAIO_REQ (ST (i));
1393 2591
1394 if (req) 2592 if (req)
1395 { 2593 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 } 2594 }
1408} 2595}
2596
2597void
2598cancel_subs (aio_req_ornot req)
2599 CODE:
2600 req_cancel_subs (req);
1409 2601
1410void 2602void
1411result (aio_req grp, ...) 2603result (aio_req grp, ...)
1412 CODE: 2604 CODE:
1413{ 2605{
1414 int i; 2606 int i;
2607 AV *av;
2608
2609 grp->errorno = errno;
2610
1415 AV *av = newAV (); 2611 av = newAV ();
2612 av_extend (av, items - 1);
1416 2613
1417 for (i = 1; i < items; ++i ) 2614 for (i = 1; i < items; ++i )
1418 av_push (av, newSVsv (ST (i))); 2615 av_push (av, newSVsv (ST (i)));
1419 2616
1420 SvREFCNT_dec (grp->data); 2617 SvREFCNT_dec (grp->sv1);
1421 grp->data = (SV *)av; 2618 grp->sv1 = (SV *)av;
1422} 2619}
1423 2620
1424void 2621void
2622errno (aio_req grp, int errorno = errno)
2623 CODE:
2624 grp->errorno = errorno;
2625
2626void
1425feed_limit (aio_req grp, int limit) 2627limit (aio_req grp, int limit)
1426 CODE: 2628 CODE:
1427 grp->fd2 = limit; 2629 eio_grp_limit (grp, limit);
1428 aio_grp_feed (grp);
1429 2630
1430void 2631void
1431feed (aio_req grp, SV *callback=&PL_sv_undef) 2632feed (aio_req grp, SV *callback = &PL_sv_undef)
1432 CODE: 2633 CODE:
1433{ 2634{
1434 SvREFCNT_dec (grp->fh2); 2635 SvREFCNT_dec (grp->sv2);
1435 grp->fh2 = newSVsv (callback); 2636 grp->sv2 = newSVsv (callback);
2637 grp->feed = aio_grp_feed;
1436 2638
1437 if (grp->fd2 <= 0) 2639 if (grp->int2 <= 0)
1438 grp->fd2 = 2; 2640 grp->int2 = 2;
1439 2641
1440 aio_grp_feed (grp); 2642 eio_grp_limit (grp, grp->int2);
1441} 2643}
1442 2644

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