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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC vs.
Revision 1.290 by root, Sun Feb 7 13:13:44 2021 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
8#include "perliol.h"
7 9
8#include "autoconf/config.h" 10#if !defined mg_findext
11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
12#endif
9 13
10#include <pthread.h> 14#include <stddef.h>
11 15#include <stdlib.h>
16#include <errno.h>
12#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
13#include <sys/stat.h> 19#include <sys/stat.h>
14
15#include <unistd.h> 20#include <limits.h>
16#include <fcntl.h> 21#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 22#include <sched.h>
19 23
20#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
21# if __linux 25 * to implement any linux standard apis, and also has no way to test
22# include <sys/sendfile.h> 26 * for his broken iplementation. don't complain to me if this fails
23# elif __freebsd 27 * for you.
24# include <sys/socket.h> 28 */
25# include <sys/uio.h> 29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
26# elif __hpux 30# include <linux/fs.h>
27# include <sys/socket.h> 31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
28# endif 35# endif
29#endif 36#endif
30 37
31#if __ia64 38/* perl namespace pollution */
32# define STACKSIZE 65536 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
33#else 85#else
34# define STACKSIZE 4096 86
87 #include <sys/time.h>
88 #include <sys/select.h>
89 #include <sys/wait.h>
90 #include <unistd.h>
91 #include <utime.h>
92 #include <signal.h>
93
94 #define EIO_STRUCT_STAT Stat_t
95
96#endif
97
98/*****************************************************************************/
99
100#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value))
102#else
103# define expect(expr,value) (expr)
104#endif
105
106#define expect_false(expr) expect ((expr) != 0, 0)
107#define expect_true(expr) expect ((expr) != 0, 1)
108
109/*****************************************************************************/
110
111#include "config.h"
112
113#if HAVE_SYS_MKDEV_H
114# include <sys/mkdev.h>
115#elif HAVE_SYS_SYSMACROS_H
116# include <sys/sysmacros.h>
117#endif
118
119#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
120# include <sys/mman.h>
121#endif
122
123#if HAVE_SYS_UIO_H
124# include <sys/uio.h>
125#endif
126
127#if HAVE_ST_XTIMENSEC
128# define ATIMENSEC PL_statcache.st_atimensec
129# define MTIMENSEC PL_statcache.st_mtimensec
130# define CTIMENSEC PL_statcache.st_ctimensec
131#elif HAVE_ST_XTIMESPEC
132# define ATIMENSEC PL_statcache.st_atim.tv_nsec
133# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
134# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
135#else
136# define ATIMENSEC 0
137# define MTIMENSEC 0
138# define CTIMENSEC 0
139#endif
140
141#if HAVE_ST_BIRTHTIMENSEC
142# define BTIMESEC PL_statcache.st_birthtime
143# define BTIMENSEC PL_statcache.st_birthtimensec
144#elif HAVE_ST_BIRTHTIMESPEC
145# define BTIMESEC PL_statcache.st_birthtim.tv_sec
146# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
147#else
148# define BTIMESEC 0
149# define BTIMENSEC 0
150#endif
151
152#if HAVE_ST_GEN
153# define ST_GEN PL_statcache.st_gen
154#else
155# define ST_GEN 0
156#endif
157
158#include "schmorp.h"
159
160#if HAVE_EVENTFD
161# include <sys/eventfd.h>
162#endif
163
164#if HAVE_TIMERFD
165# include <sys/timerfd.h>
166#endif
167
168#if HAVE_RLIMITS
169 #include <sys/time.h>
170 #include <sys/resource.h>
171#endif
172
173typedef SV SV8; /* byte-sv, used for argument-checking */
174typedef int aio_rfd; /* read file desriptor */
175typedef int aio_wfd; /* write file descriptor */
176
177static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
178
179#define EIO_REQ_MEMBERS \
180 SV *callback; \
181 SV *sv1, *sv2; \
182 SV *sv3, *sv4; \
183 STRLEN stroffset; \
184 SV *self;
185
186#define EIO_NO_WRAPPERS 1
187
188#include "libeio/eio.h"
189
190static int req_invoke (eio_req *req);
191#define EIO_FINISH(req) req_invoke (req)
192static void req_destroy (eio_req *grp);
193#define EIO_DESTROY(req) req_destroy (req)
194
195#include "libeio/eio.c"
196
197#if !HAVE_POSIX_FADVISE
198# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
199#endif
200
201#if !HAVE_POSIX_MADVISE
202# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
203#endif
204
205#ifndef MAP_ANONYMOUS
206# ifdef MAP_ANON
207# define MAP_ANONYMOUS MAP_ANON
208# else
209# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
35#endif 210# endif
211#endif
36 212
37enum { 213#ifndef makedev
38 REQ_QUIT, 214# define makedev(maj,min) (((maj) << 8) | (min))
39 REQ_OPEN, REQ_CLOSE, 215#endif
40 REQ_READ, REQ_WRITE, REQ_READAHEAD, 216#ifndef major
41 REQ_SENDFILE, 217# define major(dev) ((dev) >> 8)
42 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 218#endif
43 REQ_FSYNC, REQ_FDATASYNC, 219#ifndef minor
44 REQ_UNLINK, REQ_RMDIR, 220# define minor(dev) ((dev) & 0xff)
45 REQ_SYMLINK, 221#endif
222
223/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
224#ifdef __sun
225# undef PAGESIZE
226#endif
227
228#if PAGESIZE <= 0
229# define PAGESIZE sysconf (_SC_PAGESIZE)
230#endif
231
232/* solaris perl seems to declare a wrong syscall function that clashes with system includes */
233#ifdef __sun
234# undef HAVE_SYSCALL
235#endif
236
237#if HAVE_SYSCALL
238#include <sys/syscall.h>
239#else
240# define syscall(nr,...) (errno = ENOSYS, -1)
241#endif
242
243/*****************************************************************************/
244
245#if !_POSIX_MAPPED_FILES
246# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
247# define munmap(addr,length) EIO_ENOSYS ()
248#endif
249
250#if !_POSIX_MEMORY_PROTECTION
251# define mprotect(addr,len,prot) EIO_ENOSYS ()
252#endif
253
254#if !MREMAP_MAYMOVE
255# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
256#endif
257
258#define FOREIGN_MAGIC PERL_MAGIC_ext
259
260static int ecb_cold
261mmap_free (pTHX_ SV *sv, MAGIC *mg)
262{
263 int old_errno = errno;
264 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
265 errno = old_errno;
266
267 mg->mg_obj = 0; /* just in case */
268
269 SvREADONLY_off (sv);
270
271 if (SvPVX (sv) != mg->mg_ptr)
272 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
273
274 SvCUR_set (sv, 0);
275 SvPVX (sv) = 0;
276 SvOK_off (sv);
277
278 return 0;
279}
280
281static MGVTBL mmap_vtbl = {
282 0, 0, 0, 0, mmap_free
46}; 283};
47 284
48typedef struct aio_cb { 285static int ecb_cold
49 struct aio_cb *volatile next; 286sysfree_free (pTHX_ SV *sv, MAGIC *mg)
50
51 int type;
52
53 int fd, fd2;
54 off_t offset;
55 size_t length;
56 ssize_t result;
57 mode_t mode; /* open */
58 int errorno;
59 SV *data, *callback;
60 SV *fh, *fh2;
61 void *dataptr, *data2ptr;
62 STRLEN dataoffset;
63
64 Stat_t *statdata;
65} aio_cb;
66
67typedef aio_cb *aio_req;
68
69static int started, wanted;
70static volatile int nreqs;
71static int max_outstanding = 1<<30;
72static int respipe [2];
73
74static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
75static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
76static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77
78static volatile aio_req reqs, reqe; /* queue start, queue end */
79static volatile aio_req ress, rese; /* queue start, queue end */
80
81static void free_req (aio_req req)
82{ 287{
83 if (req->data) 288 free (mg->mg_ptr);
84 SvREFCNT_dec (req->data); 289 mg->mg_obj = 0; /* just in case */
85 290
86 if (req->fh) 291 SvREADONLY_off (sv);
87 SvREFCNT_dec (req->fh);
88 292
89 if (req->fh2) 293 if (SvPVX (sv) != mg->mg_ptr)
90 SvREFCNT_dec (req->fh2); 294 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
91 295
92 if (req->statdata) 296 SvCUR_set (sv, 0);
93 Safefree (req->statdata); 297 SvPVX (sv) = 0;
298 SvOK_off (sv);
94 299
95 if (req->callback) 300 return 0;
96 SvREFCNT_dec (req->callback);
97
98 Safefree (req);
99} 301}
100 302
303static MGVTBL sysfree_vtbl = {
304 0, 0, 0, 0, sysfree_free
305};
306
307/*****************************************************************************/
308
309/* helper: set scalar to foreign ptr with custom free */
310ecb_noinline
101static void 311static void
102poll_wait () 312sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
103{ 313{
104 if (nreqs && !ress) 314 sv_force_normal (sv);
105 {
106 fd_set rfd;
107 FD_ZERO(&rfd);
108 FD_SET(respipe [0], &rfd);
109 315
110 select (respipe [0] + 1, &rfd, 0, 0, 0); 316 /* we store the length in mg_obj, as namlen is I32 :/ */
111 } 317 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
112} 318 ->mg_obj = (SV *)length;
113 319
320 SvUPGRADE (sv, SVt_PV); /* nop... */
321
322 if (SvLEN (sv))
323 Safefree (SvPVX (sv));
324
325 SvPVX (sv) = (char *)addr;
326 SvCUR_set (sv, length);
327 SvLEN_set (sv, 0);
328 SvPOK_only (sv);
329}
330
114static int 331static void
115poll_cb () 332sv_clear_foreign (SV *sv)
116{ 333{
117 dSP; 334 /* todo: iterate over magic and only free ours, but of course */
335 /* the perl5porters will call that (correct) behaviour buggy */
336 sv_unmagic (sv, FOREIGN_MAGIC);
337}
338
339/*****************************************************************************/
340
341/* defines all sorts of constants to 0 unless they are already defined */
342/* also provides const_iv_ and const_niv_ macros for them */
343#include "def0.h"
344
345/*****************************************************************************/
346
347static void
348fiemap (eio_req *req)
349{
350 req->result = -1;
351
352#if HAVE_FIEMAP
353 /* assume some c99 */
354 struct fiemap *fiemap = 0;
355 size_t end_offset;
356 int count = req->int3;
357
358 req->flags |= EIO_FLAG_PTR1_FREE;
359
360 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
361 /* increase in fixed steps */
362 if (count < 0)
118 int count = 0; 363 count = 8;
119 int do_croak = 0; 364
120 aio_req req; 365 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
366 errno = ENOMEM;
367 if (!fiemap)
368 return;
369
370 req->ptr1 = fiemap;
371
372 fiemap->fm_start = req->offs;
373 fiemap->fm_length = req->size;
374 fiemap->fm_flags = req->int2;
375 fiemap->fm_extent_count = count;
376
377 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
378 return;
379
380 if (req->int3 >= 0 /* not autosizing */
381 || !fiemap->fm_mapped_extents /* no more extents */
382 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
383 goto done;
384
385 /* else we have to loop -
386 * it would be tempting (actually I tried that first) to just query the
387 * number of extents needed, but linux often feels like not returning all
388 * extents, without telling us it left any out. this complicates
389 * this quite a bit.
390 */
391
392 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
121 393
122 for (;;) 394 for (;;)
123 { 395 {
124 pthread_mutex_lock (&reslock); 396 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
125 req = ress; 397 char scratch[3072];
398 struct fiemap *incmap = (struct fiemap *)scratch;
126 399
400 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
401 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
402 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
403 incmap->fm_flags = fiemap->fm_flags;
404 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
405
406 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
407 return;
408
409 if (!incmap->fm_mapped_extents)
410 goto done;
411
412 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
413 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
414 errno = ENOMEM;
127 if (req) 415 if (!fiemap)
416 return;
417
418 req->ptr1 = fiemap;
419
420 for (count = 0; count < incmap->fm_mapped_extents; ++count)
128 { 421 {
129 ress = req->next; 422 struct fiemap_extent *e = incmap->fm_extents + count;
130 423
131 if (!ress) 424 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
132 {
133 /* read any signals sent by the worker threads */
134 char buf [32];
135 while (read (respipe [0], buf, 32) == 32)
136 ;
137 425
138 rese = 0; 426 if (e->fe_logical >= end_offset)
139 } 427 goto done;
428
429 if (e->fe_flags & FIEMAP_EXTENT_LAST)
430 goto done;
431
140 } 432 }
433 }
141 434
142 pthread_mutex_unlock (&reslock); 435done:
436 req->result = 0;
143 437
144 if (!req) 438#else
145 break; 439 errno = ENOSYS;
440#endif
441}
146 442
147 nreqs--; 443/*****************************************************************************/
148 444
149 if (req->type == REQ_QUIT) 445static int close_fd; /* dummy fd to close fds via dup2 */
150 started--; 446
151 else 447#if HAVE_STATX
448static struct statx stx;
449#define statx_offsetof(member) offsetof (struct statx, member)
450#define eio__statx statx
451#else
452#define statx_offsetof(member) 0
453#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
454#endif
455
456enum {
457 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
458};
459
460typedef eio_req *aio_req;
461typedef eio_req *aio_req_ornot;
462typedef eio_wd aio_wd;
463
464static SV *on_next_submit;
465static int next_pri = EIO_PRI_DEFAULT;
466static int max_outstanding;
467
468static s_epipe respipe;
469
470static void req_destroy (aio_req req);
471static void req_cancel (aio_req req);
472
473static void
474want_poll (void)
475{
476 /* write a dummy byte to the pipe so fh becomes ready */
477 s_epipe_signal (&respipe);
478}
479
480static void
481done_poll (void)
482{
483 /* read any signals sent by the worker threads */
484 s_epipe_drain (&respipe);
485}
486
487/* must be called at most once */
488ecb_noinline
489static SV *
490req_sv (aio_req req, HV *stash)
491{
492 if (!req->self)
493 {
494 req->self = (SV *)newHV ();
495 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
496 }
497
498 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
499}
500
501static SV *
502newSVaio_wd (aio_wd wd)
503{
504 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
505}
506
507ecb_noinline
508static aio_req
509SvAIO_REQ (SV *sv)
510{
511 MAGIC *mg;
512
513 if (!SvROK (sv)
514 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
515 || (SvSTASH (SvRV (sv)) != aio_grp_stash
516 && SvSTASH (SvRV (sv)) != aio_req_stash
517 && !sv_derived_from (sv, "IO::AIO::REQ")))
518 croak ("object of class IO::AIO::REQ expected");
519
520 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
521
522 return mg ? (aio_req)mg->mg_ptr : 0;
523}
524
525static aio_wd
526SvAIO_WD (SV *sv)
527{
528 if (!SvROK (sv)
529 || SvTYPE (SvRV (sv)) != SVt_PVMG
530 || SvSTASH (SvRV (sv)) != aio_wd_stash)
531 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
532
533 return (aio_wd)(long)SvIVX (SvRV (sv));
534}
535
536static SV *
537newmortalFH (int fd, int flags)
538{
539 if (fd < 0)
540 return &PL_sv_undef;
541
542 GV *gv = (GV *)sv_newmortal ();
543 char sym[64];
544 int symlen;
545
546 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
547 gv_init (gv, aio_stash, sym, symlen, 0);
548
549 symlen = snprintf (
550 sym,
551 sizeof (sym),
552 "%s&=%d",
553 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
554 fd
555 );
556
557 return do_open (gv, sym, symlen, 0, 0, 0, 0)
558 ? (SV *)gv : &PL_sv_undef;
559}
560
561static void
562aio_grp_feed (aio_req grp)
563{
564 if (grp->sv2 && SvOK (grp->sv2))
565 {
566 dSP;
567
568 ENTER;
569 SAVETMPS;
570 PUSHMARK (SP);
571 XPUSHs (req_sv (grp, aio_grp_stash));
572 PUTBACK;
573 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
574 SPAGAIN;
575 FREETMPS;
576 LEAVE;
577 }
578}
579
580ecb_noinline
581static void
582req_submit (eio_req *req)
583{
584 eio_submit (req);
585
586 if (expect_false (on_next_submit))
587 {
588 dSP;
589 SV *cb = sv_2mortal (on_next_submit);
590
591 on_next_submit = 0;
592
593 PUSHMARK (SP);
594 PUTBACK;
595 call_sv (cb, G_DISCARD | G_EVAL);
596 }
597}
598
599static int
600req_invoke (eio_req *req)
601{
602 if (req->flags & FLAG_SV2_RO_OFF)
603 SvREADONLY_off (req->sv2);
604
605 if (!EIO_CANCELLED (req) && req->callback)
606 {
607 dSP;
608 static SV *sv_result_cache; /* caches the result integer SV */
609 SV *sv_result;
610
611 ENTER;
612 SAVETMPS;
613 PUSHMARK (SP);
614 EXTEND (SP, 1);
615
616 /* do not recreate the result IV from scratch each time */
617 if (expect_true (sv_result_cache))
152 { 618 {
153 int errorno = errno; 619 sv_result = sv_result_cache; sv_result_cache = 0;
154 errno = req->errorno; 620 SvIV_set (sv_result, req->result);
155 621 SvIOK_only (sv_result);
156 if (req->type == REQ_READ)
157 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158
159 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
160 SvREADONLY_off (req->data);
161
162 if (req->statdata)
163 {
164 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165 PL_laststatval = req->result;
166 PL_statcache = *(req->statdata);
167 }
168
169 ENTER;
170 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172
173 if (req->type == REQ_OPEN)
174 {
175 /* convert fd to fh */
176 SV *fh;
177
178 PUTBACK;
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180 SPAGAIN;
181
182 fh = SvREFCNT_inc (POPs);
183
184 PUSHMARK (SP);
185 XPUSHs (sv_2mortal (fh));
186 }
187
188 if (SvOK (req->callback))
189 {
190 PUTBACK;
191 call_sv (req->callback, G_VOID | G_EVAL);
192 SPAGAIN;
193
194 if (SvTRUE (ERRSV))
195 {
196 free_req (req);
197 croak (0);
198 }
199 }
200
201 LEAVE;
202
203 errno = errorno;
204 count++;
205 }
206
207 free_req (req);
208 }
209
210 return count;
211}
212
213static void *aio_proc(void *arg);
214
215static void
216start_thread (void)
217{
218 sigset_t fullsigset, oldsigset;
219 pthread_t tid;
220 pthread_attr_t attr;
221
222 pthread_attr_init (&attr);
223 pthread_attr_setstacksize (&attr, STACKSIZE);
224 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
225
226 sigfillset (&fullsigset);
227 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
228
229 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
230 started++;
231
232 sigprocmask (SIG_SETMASK, &oldsigset, 0);
233}
234
235static void
236send_req (aio_req req)
237{
238 while (started < wanted && nreqs >= started)
239 start_thread ();
240
241 nreqs++;
242
243 pthread_mutex_lock (&reqlock);
244
245 req->next = 0;
246
247 if (reqe)
248 {
249 reqe->next = req;
250 reqe = req;
251 }
252 else
253 reqe = reqs = req;
254
255 pthread_cond_signal (&reqwait);
256 pthread_mutex_unlock (&reqlock);
257
258 if (nreqs > max_outstanding)
259 for (;;)
260 {
261 poll_cb ();
262
263 if (nreqs <= max_outstanding)
264 break;
265
266 poll_wait ();
267 }
268}
269
270static void
271end_thread (void)
272{
273 aio_req req;
274 Newz (0, req, 1, aio_cb);
275 req->type = REQ_QUIT;
276
277 send_req (req);
278}
279
280static void min_parallel (int nthreads)
281{
282 if (wanted < nthreads)
283 wanted = nthreads;
284}
285
286static void max_parallel (int nthreads)
287{
288 int cur = started;
289
290 if (wanted > nthreads)
291 wanted = nthreads;
292
293 while (cur > wanted)
294 {
295 end_thread ();
296 cur--;
297 }
298
299 while (started > wanted)
300 {
301 poll_wait ();
302 poll_cb ();
303 }
304}
305
306static void create_pipe ()
307{
308 if (pipe (respipe))
309 croak ("unable to initialize result pipe");
310
311 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312 croak ("cannot set result pipe to nonblocking mode");
313
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode");
316}
317
318static void atfork_prepare (void)
319{
320 pthread_mutex_lock (&reqlock);
321 pthread_mutex_lock (&reslock);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 aio_req prv;
333
334 started = 0;
335
336 while (reqs)
337 {
338 prv = reqs;
339 reqs = prv->next;
340 free_req (prv);
341 }
342
343 reqs = reqe = 0;
344
345 while (ress)
346 {
347 prv = ress;
348 ress = prv->next;
349 free_req (prv);
350 }
351
352 ress = rese = 0;
353
354 close (respipe [0]);
355 close (respipe [1]);
356 create_pipe ();
357
358 atfork_parent ();
359}
360
361/*****************************************************************************/
362/* work around various missing functions */
363
364#if !HAVE_PREADWRITE
365# define pread aio_pread
366# define pwrite aio_pwrite
367
368/*
369 * make our pread/pwrite safe against themselves, but not against
370 * normal read/write by using a mutex. slows down execution a lot,
371 * but that's your problem, not mine.
372 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
374
375static ssize_t
376pread (int fd, void *buf, size_t count, off_t offset)
377{
378 ssize_t res;
379 off_t ooffset;
380
381 pthread_mutex_lock (&iolock);
382 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock);
387
388 return res;
389}
390
391static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset)
393{
394 ssize_t res;
395 off_t ooffset;
396
397 pthread_mutex_lock (&iolock);
398 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock);
403
404 return res;
405}
406#endif
407
408#if !HAVE_FDATASYNC
409# define fdatasync fsync
410#endif
411
412#if !HAVE_READAHEAD
413# define readahead aio_readahead
414
415static char readahead_buf[4096];
416
417static ssize_t
418readahead (int fd, off_t offset, size_t count)
419{
420 while (count > 0)
421 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423
424 pread (fd, readahead_buf, len, offset);
425 offset += len;
426 count -= len;
427 }
428
429 errno = 0;
430}
431#endif
432
433/* sendfile always needs emulation */
434static ssize_t
435sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436{
437 ssize_t res;
438
439 if (!count)
440 return 0;
441
442#if __linux
443 res = sendfile (ofd, ifd, &offset, count);
444
445#elif __freebsd
446 /*
447 * Of course, the freebsd sendfile is a dire hack with no thoughts
448 * wasted on making it similar to other i/o functions.
449 */
450 {
451 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453
454 if (!res && errno == EAGAIN)
455 res = sbytes;
456 }
457
458#elif __hpux
459 res = sendfile (ofd, ifd, offset, count, 0, 0);
460
461#else
462 res = -1;
463 errno = ENOSYS;
464#endif
465
466 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))
467 {
468 /* emulate sendfile. this is a major pain in the ass */
469 char *buf = malloc (4096);
470 res = 0;
471
472 for (;;)
473 {
474 ssize_t cnt;
475
476 cnt = pread (ifd, buf, 4096, offset);
477
478 if (cnt <= 0)
479 {
480 if (cnt && !res) res = -1;
481 break;
482 }
483
484 cnt = write (ofd, buf, cnt);
485
486 if (cnt <= 0)
487 {
488 if (cnt && !res) res = -1;
489 break;
490 }
491
492 offset += cnt;
493 res += cnt;
494 }
495
496 {
497 int errorno = errno;
498 free (buf);
499 errno = errorno;
500 }
501 }
502
503 return res;
504}
505
506/*****************************************************************************/
507
508static void *
509aio_proc (void *thr_arg)
510{
511 aio_req req;
512 int type;
513
514 do
515 {
516 pthread_mutex_lock (&reqlock);
517
518 for (;;)
519 {
520 req = reqs;
521
522 if (reqs)
523 {
524 reqs = reqs->next;
525 if (!reqs) reqe = 0;
526 }
527
528 if (req)
529 break;
530
531 pthread_cond_wait (&reqwait, &reqlock);
532 }
533
534 pthread_mutex_unlock (&reqlock);
535
536 errno = 0; /* strictly unnecessary */
537
538 type = req->type;
539
540 switch (type)
541 {
542 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
543 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
544
545 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
546 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
547
548 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
549 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
550 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
551
552 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
553 case REQ_CLOSE: req->result = close (req->fd); break;
554 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
555 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
556 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
557
558 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
559 case REQ_FSYNC: req->result = fsync (req->fd); break;
560
561 case REQ_QUIT:
562 break;
563
564 default:
565 req->result = ENOSYS;
566 break;
567 }
568
569 req->errorno = errno;
570
571 pthread_mutex_lock (&reslock);
572
573 req->next = 0;
574
575 if (rese)
576 {
577 rese->next = req;
578 rese = req;
579 } 622 }
580 else 623 else
581 { 624 {
582 rese = ress = req; 625 sv_result = newSViv (req->result);
583 626 SvREADONLY_on (sv_result);
584 /* write a dummy byte to the pipe so fh becomes ready */
585 write (respipe [1], &respipe, 1);
586 } 627 }
587 628
588 pthread_mutex_unlock (&reslock); 629 switch (req->type)
630 {
631 case EIO_WD_OPEN:
632 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
633 break;
634
635 case EIO_READDIR:
636 {
637 SV *rv = &PL_sv_undef;
638
639 if (req->result >= 0)
640 {
641 int i;
642 char *names = (char *)req->ptr2;
643 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
644 AV *av = newAV ();
645
646 av_extend (av, req->result - 1);
647
648 for (i = 0; i < req->result; ++i)
649 {
650 if (req->int1 & EIO_READDIR_DENTS)
651 {
652 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
653
654 if (req->int1 & EIO_READDIR_CUSTOM2)
655 {
656 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
657 AV *avent = newAV ();
658
659 av_extend (avent, 2);
660
661 if (!sv_type [ent->type])
662 {
663 sv_type [ent->type] = newSViv (ent->type);
664 SvREADONLY_on (sv_type [ent->type]);
665 }
666
667 av_store (avent, 0, namesv);
668 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
669 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
670
671 av_store (av, i, newRV_noinc ((SV *)avent));
672 }
673 else
674 av_store (av, i, namesv);
675
676 ++ent;
677 }
678 else
679 {
680 SV *name = newSVpv (names, 0);
681 av_store (av, i, name);
682 names += SvCUR (name) + 1;
683 }
684 }
685
686 rv = sv_2mortal (newRV_noinc ((SV *)av));
687 }
688
689 PUSHs (rv);
690
691 if (req->int1 & EIO_READDIR_CUSTOM1)
692 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
693 }
694 break;
695
696 case EIO_OPEN:
697 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
698 break;
699
700 case EIO_STATVFS:
701 case EIO_FSTATVFS:
702 {
703 SV *rv = &PL_sv_undef;
704
705#ifndef _WIN32
706 if (req->result >= 0)
707 {
708 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
709 HV *hv = newHV ();
710 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
711 * chooses to make it a struct.
712 */
713 unsigned long fsid = 0;
714 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
715
716 rv = sv_2mortal (newRV_noinc ((SV *)hv));
717
718 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
719 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
720 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
721 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
722 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
723 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
724 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
725 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
726 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
727 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
728 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
729 }
730#endif
731
732 PUSHs (rv);
733 }
734
735 break;
736
737 case EIO_GROUP:
738 req->int1 = 2; /* mark group as finished */
739
740 if (req->sv1)
741 {
742 int i;
743 AV *av = (AV *)req->sv1;
744
745 EXTEND (SP, AvFILL (av) + 1);
746 for (i = 0; i <= AvFILL (av); ++i)
747 PUSHs (*av_fetch (av, i, 0));
748 }
749 break;
750
751 case EIO_NOP:
752 case EIO_BUSY:
753 break;
754
755 case EIO_READLINK:
756 case EIO_REALPATH:
757 if (req->result > 0)
758 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
759 break;
760
761 case EIO_STAT:
762 case EIO_LSTAT:
763 case EIO_FSTAT:
764 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
765
766 if (!(PL_laststatval = req->result))
767 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
768 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
769
770 PUSHs (sv_result);
771 break;
772
773 case EIO_SEEK:
774 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
775 break;
776
777 case EIO_READ:
778 {
779 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
780 *SvEND (req->sv2) = 0;
781 SvPOK_only (req->sv2);
782 SvSETMAGIC (req->sv2);
783 PUSHs (sv_result);
784 }
785 break;
786
787 case EIO_SLURP:
788 {
789 if (req->result >= 0)
790 {
791 /* if length was originally not known, we steal the malloc'ed memory */
792 if (req->flags & EIO_FLAG_PTR2_FREE)
793 {
794 req->flags &= ~EIO_FLAG_PTR2_FREE;
795 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
796 }
797 else
798 {
799 SvCUR_set (req->sv2, req->result);
800 *SvEND (req->sv2) = 0;
801 SvPOK_only (req->sv2);
802 }
803
804 SvSETMAGIC (req->sv2);
805 }
806
807 PUSHs (sv_result);
808 }
809 break;
810
811 case EIO_CUSTOM:
812 if (req->feed == fiemap)
813 {
814#if HAVE_FIEMAP
815 if (!req->result)
816 {
817 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
818
819 if (fiemap->fm_extent_count)
820 {
821 AV *av = newAV ();
822 int i;
823
824 while (fiemap->fm_mapped_extents)
825 {
826 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
827 AV *ext_av = newAV ();
828
829 av_store (ext_av, 3, newSVuv (extent->fe_flags));
830 av_store (ext_av, 2, newSVval64 (extent->fe_length));
831 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
832 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
833
834 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
835 }
836
837 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
838 }
839 else
840 {
841 SvIV_set (sv_result, fiemap->fm_mapped_extents);
842 PUSHs (sv_result);
843 }
844 }
845#endif
846 }
847 else
848 PUSHs (sv_result);
849 break;
850
851#if 0
852 case EIO_CLOSE:
853 PerlIOUnix_refcnt_dec (req->int1);
854 break;
855#endif
856
857 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
858 if (req->result > 0)
859 SvIV_set (sv_result, 0);
860 /* FALLTHROUGH */
861
862 default:
863 PUSHs (sv_result);
864 break;
865 }
866
867 errno = req->errorno;
868
869 PUTBACK;
870 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
871 SPAGAIN;
872
873 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
874 SvREFCNT_dec (sv_result);
875 else
876 sv_result_cache = sv_result;
877
878 FREETMPS;
879 LEAVE;
880
881 PUTBACK;
589 } 882 }
590 while (type != REQ_QUIT);
591 883
884 return !!SvTRUE (ERRSV);
885}
886
887static void
888req_destroy (aio_req req)
889{
890 if (req->self)
891 {
892 sv_unmagic (req->self, PERL_MAGIC_ext);
893 SvREFCNT_dec (req->self);
894 }
895
896 SvREFCNT_dec (req->sv1);
897 SvREFCNT_dec (req->sv2);
898 SvREFCNT_dec (req->sv3);
899 SvREFCNT_dec (req->sv4);
900 SvREFCNT_dec (req->callback);
901
902 free (req);
903}
904
905static void
906req_cancel_subs (aio_req grp)
907{
908 if (grp->type != EIO_GROUP)
909 return;
910
911 SvREFCNT_dec (grp->sv2);
912 grp->sv2 = 0;
913
914 eio_grp_cancel (grp);
915}
916
917ecb_cold
918static void
919create_respipe (void)
920{
921 if (s_epipe_renew (&respipe))
922 croak ("IO::AIO: unable to initialize result pipe");
923}
924
925static void
926poll_wait (void)
927{
928 while (eio_nreqs ())
929 {
930 int size;
931
932 X_LOCK (EIO_POOL->reslock);
933 size = EIO_POOL->res_queue.size;
934 X_UNLOCK (EIO_POOL->reslock);
935
936 if (size)
937 return;
938
939 etp_maybe_start_thread (EIO_POOL);
940
941 s_epipe_wait (&respipe);
942 }
943}
944
945static int
946poll_cb (void)
947{
948 for (;;)
949 {
950 int res = eio_poll ();
951
952 if (res > 0)
953 croak (0);
954
955 if (!max_outstanding || max_outstanding > eio_nreqs ())
956 return res;
957
958 poll_wait ();
959 }
960}
961
962ecb_cold
963static void
964reinit (void)
965{
966 create_respipe ();
967
968 if (eio_init (want_poll, done_poll) < 0)
969 croak ("IO::AIO: unable to initialise eio library");
970}
971
972/*****************************************************************************/
973
974static SV *
975get_cb (SV *cb_sv)
976{
977 SvGETMAGIC (cb_sv);
978 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
979}
980
981ecb_noinline
982static aio_req ecb_noinline
983dreq (SV *callback)
984{
985 SV *cb_cv;
986 aio_req req;
987 int req_pri = next_pri;
988 next_pri = EIO_PRI_DEFAULT;
989
990 cb_cv = get_cb (callback);
991
992 req = calloc (sizeof (*req), 1);
993 if (!req)
994 croak ("out of memory during eio_req allocation");
995
996 req->callback = SvREFCNT_inc (cb_cv);
997 req->pri = req_pri;
998
592 return 0; 999 return req;
593} 1000}
594 1001
595#define dREQ \ 1002#define dREQ \
596 aio_req req; \ 1003 aio_req req = dreq (callback); \
1004
1005#define REQ_SEND \
1006 PUTBACK; \
1007 req_submit (req); \
1008 SPAGAIN; \
597 \ 1009 \
598 if (SvOK (callback) && !SvROK (callback)) \ 1010 if (GIMME_V != G_VOID) \
599 croak ("clalback must be undef or of reference type"); \ 1011 XPUSHs (req_sv (req, aio_req_stash));
600 \ 1012
601 Newz (0, req, 1, aio_cb); \ 1013/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
602 if (!req) \ 1014ecb_inline
603 croak ("out of memory during aio_req allocation"); \ 1015void
604 \ 1016req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
605 req->callback = newSVsv (callback); 1017{
606 1018 if (expect_false (SvROK (path)))
1019 {
1020 SV *rv = SvRV (path);
1021 SV *wdob;
1022
1023 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
1024 {
1025 path = AvARRAY (rv)[1];
1026 wdob = AvARRAY (rv)[0];
1027
1028 if (SvOK (wdob))
1029 {
1030 *wd = SvAIO_WD (wdob);
1031 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
1032 }
1033 else
1034 *wd = EIO_INVALID_WD;
1035 }
1036 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1037 {
1038 *wd = (aio_wd)(long)SvIVX (rv);
1039 *wdsv = SvREFCNT_inc_NN (rv);
1040 *ptr = ".";
1041 return; /* path set to "." */
1042 }
1043 else
1044 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1045 }
1046
1047 *pathsv = newSVsv (path);
1048 *ptr = SvPVbyte_nolen (*pathsv);
1049}
1050
1051ecb_noinline
1052static void
1053req_set_path1 (aio_req req, SV *path)
1054{
1055 req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1056}
1057
1058ecb_noinline
1059static void
1060req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1061{
1062 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1063
1064 switch (SvTYPE (rv))
1065 {
1066 case SVt_PVIO:
1067 case SVt_PVLV:
1068 case SVt_PVGV:
1069 req->type = type_fh;
1070 req->sv1 = newSVsv (fh_or_path);
1071 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1072 break;
1073
1074 default:
1075 req->type = type_path;
1076 req_set_path1 (req, fh_or_path);
1077 break;
1078 }
1079}
1080
1081/*****************************************************************************/
1082
1083static void
1084ts_set (struct timespec *ts, NV value)
1085{
1086 ts->tv_sec = value;
1087 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
1088}
1089
1090static NV
1091ts_get (const struct timespec *ts)
1092{
1093 return ts->tv_sec + ts->tv_nsec * 1e-9;
1094}
1095
1096/*****************************************************************************/
1097
1098XS(boot_IO__AIO) ecb_cold;
1099
607MODULE = IO::AIO PACKAGE = IO::AIO 1100MODULE = IO::AIO PACKAGE = IO::AIO
608 1101
609PROTOTYPES: ENABLE 1102PROTOTYPES: ENABLE
610 1103
611BOOT: 1104BOOT:
612{ 1105{
613 create_pipe (); 1106 static const struct {
614 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1107 const char *name;
615} 1108 IV iv;
1109 } *civ, const_iv[] = {
1110# define const_niv(name, value) { # name, (IV) value },
1111# define const_iv(name) { # name, (IV) name },
1112# define const_eio(name) { # name, (IV) EIO_ ## name },
616 1113
1114 /* you have to re-run ./gendef0 after adding/removing any constants here */
1115 /* the first block can be undef if missing */
1116 const_iv (ENOSYS)
1117 const_iv (EXDEV)
1118 const_iv (EBADR)
1119
1120 /* for lseek */
1121 const_iv (SEEK_DATA)
1122 const_iv (SEEK_HOLE)
1123
1124 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1125 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1126 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1127 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1128 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1129 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1130
1131 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1132 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1133 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1134 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1135 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1136
1137 /* the second block will be 0 when missing */
1138 const_iv (O_ACCMODE)
1139
1140 const_iv (O_RDONLY)
1141 const_iv (O_WRONLY)
1142 const_iv (O_RDWR)
1143 const_iv (O_CREAT)
1144 const_iv (O_TRUNC)
1145 const_iv (O_EXCL)
1146 const_iv (O_APPEND)
1147
1148 const_iv (O_ASYNC)
1149 const_iv (O_DIRECT)
1150 const_iv (O_NOATIME)
1151
1152 const_iv (O_CLOEXEC)
1153 const_iv (O_NOCTTY)
1154 const_iv (O_NOFOLLOW)
1155 const_iv (O_NONBLOCK)
1156 const_iv (O_EXEC)
1157 const_iv (O_SEARCH)
1158 const_iv (O_DIRECTORY)
1159 const_iv (O_DSYNC)
1160 const_iv (O_RSYNC)
1161 const_iv (O_SYNC)
1162 const_iv (O_PATH)
1163 const_iv (O_TMPFILE)
1164 const_iv (O_TTY_INIT)
1165
1166 const_iv (S_IFIFO)
1167 const_iv (S_IFCHR)
1168 const_iv (S_IFBLK)
1169 const_iv (S_IFLNK)
1170 const_iv (S_IFREG)
1171 const_iv (S_IFDIR)
1172 const_iv (S_IFWHT)
1173 const_iv (S_IFSOCK)
1174 const_iv (S_IFMT)
1175
1176 const_iv (ST_RDONLY)
1177 const_iv (ST_NOSUID)
1178 const_iv (ST_NODEV)
1179 const_iv (ST_NOEXEC)
1180 const_iv (ST_SYNCHRONOUS)
1181 const_iv (ST_MANDLOCK)
1182 const_iv (ST_WRITE)
1183 const_iv (ST_APPEND)
1184 const_iv (ST_IMMUTABLE)
1185 const_iv (ST_NOATIME)
1186 const_iv (ST_NODIRATIME)
1187 const_iv (ST_RELATIME)
1188
1189 const_iv (PROT_NONE)
1190 const_iv (PROT_EXEC)
1191 const_iv (PROT_READ)
1192 const_iv (PROT_WRITE)
1193
1194 const_iv (MAP_PRIVATE)
1195 const_iv (MAP_SHARED)
1196 const_iv (MAP_FIXED)
1197 const_iv (MAP_ANONYMOUS)
1198
1199 /* linuxish */
1200 const_iv (MAP_LOCKED)
1201 const_iv (MAP_NORESERVE)
1202 const_iv (MAP_POPULATE)
1203 const_iv (MAP_NONBLOCK)
1204 const_iv (MAP_GROWSDOWN)
1205 const_iv (MAP_32BIT)
1206 const_iv (MAP_HUGETLB)
1207 const_iv (MAP_STACK)
1208 const_iv (MAP_FIXED_NOREPLACE)
1209 const_iv (MAP_SHARED_VALIDATE)
1210 const_iv (MAP_SYNC)
1211 const_iv (MAP_UNINITIALIZED)
1212
1213 const_iv (MREMAP_MAYMOVE)
1214 const_iv (MREMAP_FIXED)
1215
1216 const_iv (MSG_CMSG_CLOEXEC)
1217 const_iv (SOCK_CLOEXEC)
1218
1219 const_iv (F_DUPFD_CLOEXEC)
1220
1221 const_iv (F_ADD_SEALS)
1222 const_iv (F_GET_SEALS)
1223 const_iv (F_SEAL_SEAL)
1224 const_iv (F_SEAL_SHRINK)
1225 const_iv (F_SEAL_GROW)
1226 const_iv (F_SEAL_WRITE)
1227
1228 const_iv (F_OFD_GETLK)
1229 const_iv (F_OFD_SETLK)
1230 const_iv (F_OFD_GETLKW)
1231
1232 const_iv (FIFREEZE)
1233 const_iv (FITHAW)
1234 const_iv (FITRIM)
1235 const_iv (FICLONE)
1236 const_iv (FICLONERANGE)
1237 const_iv (FIDEDUPERANGE)
1238
1239 const_iv (FS_IOC_GETFLAGS)
1240 const_iv (FS_IOC_SETFLAGS)
1241 const_iv (FS_IOC_GETVERSION)
1242 const_iv (FS_IOC_SETVERSION)
1243 const_iv (FS_IOC_FIEMAP)
1244 const_iv (FS_IOC_FSGETXATTR)
1245 const_iv (FS_IOC_FSSETXATTR)
1246 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1247 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1248 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1249
1250 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1251
1252 const_iv (FS_SECRM_FL)
1253 const_iv (FS_UNRM_FL)
1254 const_iv (FS_COMPR_FL)
1255 const_iv (FS_SYNC_FL)
1256 const_iv (FS_IMMUTABLE_FL)
1257 const_iv (FS_APPEND_FL)
1258 const_iv (FS_NODUMP_FL)
1259 const_iv (FS_NOATIME_FL)
1260 const_iv (FS_DIRTY_FL)
1261 const_iv (FS_COMPRBLK_FL)
1262 const_iv (FS_NOCOMP_FL)
1263 const_iv (FS_ENCRYPT_FL)
1264 const_iv (FS_BTREE_FL)
1265 const_iv (FS_INDEX_FL)
1266 const_iv (FS_JOURNAL_DATA_FL)
1267 const_iv (FS_NOTAIL_FL)
1268 const_iv (FS_DIRSYNC_FL)
1269 const_iv (FS_TOPDIR_FL)
1270 const_iv (FS_FL_USER_MODIFIABLE)
1271
1272 const_iv (FS_XFLAG_REALTIME)
1273 const_iv (FS_XFLAG_PREALLOC)
1274 const_iv (FS_XFLAG_IMMUTABLE)
1275 const_iv (FS_XFLAG_APPEND)
1276 const_iv (FS_XFLAG_SYNC)
1277 const_iv (FS_XFLAG_NOATIME)
1278 const_iv (FS_XFLAG_NODUMP)
1279 const_iv (FS_XFLAG_RTINHERIT)
1280 const_iv (FS_XFLAG_PROJINHERIT)
1281 const_iv (FS_XFLAG_NOSYMLINKS)
1282 const_iv (FS_XFLAG_EXTSIZE)
1283 const_iv (FS_XFLAG_EXTSZINHERIT)
1284 const_iv (FS_XFLAG_NODEFRAG)
1285 const_iv (FS_XFLAG_FILESTREAM)
1286 const_iv (FS_XFLAG_DAX)
1287 const_iv (FS_XFLAG_HASATTR)
1288
1289 const_iv (FIEMAP_FLAG_SYNC)
1290 const_iv (FIEMAP_FLAG_XATTR)
1291 const_iv (FIEMAP_FLAGS_COMPAT)
1292 const_iv (FIEMAP_EXTENT_LAST)
1293 const_iv (FIEMAP_EXTENT_UNKNOWN)
1294 const_iv (FIEMAP_EXTENT_DELALLOC)
1295 const_iv (FIEMAP_EXTENT_ENCODED)
1296 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1297 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1298 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1299 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1300 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1301 const_iv (FIEMAP_EXTENT_MERGED)
1302 const_iv (FIEMAP_EXTENT_SHARED)
1303
1304 const_iv (SPLICE_F_MOVE)
1305 const_iv (SPLICE_F_NONBLOCK)
1306 const_iv (SPLICE_F_MORE)
1307 const_iv (SPLICE_F_GIFT)
1308
1309 const_iv (EFD_CLOEXEC)
1310 const_iv (EFD_NONBLOCK)
1311 const_iv (EFD_SEMAPHORE)
1312
1313 const_iv (MFD_CLOEXEC)
1314 const_iv (MFD_ALLOW_SEALING)
1315 const_iv (MFD_HUGETLB)
1316
1317 const_iv (CLOCK_REALTIME)
1318 const_iv (CLOCK_MONOTONIC)
1319 const_iv (CLOCK_BOOTTIME)
1320 const_iv (CLOCK_REALTIME_ALARM)
1321 const_iv (CLOCK_BOOTTIME_ALARM)
1322
1323 const_iv (TFD_NONBLOCK)
1324 const_iv (TFD_CLOEXEC)
1325
1326 const_iv (TFD_TIMER_ABSTIME)
1327 const_iv (TFD_TIMER_CANCEL_ON_SET)
1328
1329 const_iv (STATX_TYPE)
1330 const_iv (STATX_MODE)
1331 const_iv (STATX_NLINK)
1332 const_iv (STATX_UID)
1333 const_iv (STATX_GID)
1334 const_iv (STATX_ATIME)
1335 const_iv (STATX_MTIME)
1336 const_iv (STATX_CTIME)
1337 const_iv (STATX_INO)
1338 const_iv (STATX_SIZE)
1339 const_iv (STATX_BLOCKS)
1340 const_iv (STATX_BASIC_STATS)
1341 const_iv (STATX_ALL)
1342 const_iv (STATX_BTIME)
1343 const_iv (STATX_ATTR_COMPRESSED)
1344 const_iv (STATX_ATTR_IMMUTABLE)
1345 const_iv (STATX_ATTR_APPEND)
1346 const_iv (STATX_ATTR_NODUMP)
1347 const_iv (STATX_ATTR_ENCRYPTED)
1348 const_iv (STATX_ATTR_AUTOMOUNT)
1349
1350 const_iv (AT_FDCWD)
1351 const_iv (AT_SYMLINK_NOFOLLOW)
1352 const_iv (AT_EACCESS)
1353 const_iv (AT_REMOVEDIR)
1354 const_iv (AT_SYMLINK_FOLLOW)
1355 const_iv (AT_NO_AUTOMOUNT)
1356 const_iv (AT_EMPTY_PATH)
1357 const_iv (AT_STATX_SYNC_TYPE)
1358 const_iv (AT_STATX_AS_STAT)
1359 const_iv (AT_STATX_FORCE_SYNC)
1360 const_iv (AT_STATX_DONT_SYNC)
1361 const_iv (AT_RECURSIVE)
1362
1363 const_iv (OPEN_TREE_CLONE)
1364
1365 const_iv (FSOPEN_CLOEXEC)
1366
1367 const_iv (FSPICK_CLOEXEC)
1368 const_iv (FSPICK_SYMLINK_NOFOLLOW)
1369 const_iv (FSPICK_NO_AUTOMOUNT)
1370 const_iv (FSPICK_EMPTY_PATH)
1371
1372 const_iv (MOVE_MOUNT_F_SYMLINKS)
1373 const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
1374 const_iv (MOVE_MOUNT_F_EMPTY_PATH)
1375 const_iv (MOVE_MOUNT_T_SYMLINKS)
1376 const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
1377 const_iv (MOVE_MOUNT_T_EMPTY_PATH)
1378
1379 /* waitid */
1380 const_iv (P_PID)
1381 const_iv (P_PIDFD)
1382 const_iv (P_PGID)
1383 const_iv (P_ALL)
1384
1385 const_iv (FSCONFIG_SET_FLAG)
1386 const_iv (FSCONFIG_SET_STRING)
1387 const_iv (FSCONFIG_SET_BINARY)
1388 const_iv (FSCONFIG_SET_PATH)
1389 const_iv (FSCONFIG_SET_PATH_EMPTY)
1390 const_iv (FSCONFIG_SET_FD)
1391 const_iv (FSCONFIG_CMD_CREATE)
1392 const_iv (FSCONFIG_CMD_RECONFIGURE)
1393
1394 const_iv (MOUNT_ATTR_RDONLY)
1395 const_iv (MOUNT_ATTR_NOSUID)
1396 const_iv (MOUNT_ATTR_NODEV)
1397 const_iv (MOUNT_ATTR_NOEXEC)
1398 const_iv (MOUNT_ATTR__ATIME)
1399 const_iv (MOUNT_ATTR_RELATIME)
1400 const_iv (MOUNT_ATTR_NOATIME)
1401 const_iv (MOUNT_ATTR_STRICTATIME)
1402 const_iv (MOUNT_ATTR_NODIRATIME)
1403
1404 /* these are libeio constants, and are independent of gendef0 */
1405 const_eio (SEEK_SET)
1406 const_eio (SEEK_CUR)
1407 const_eio (SEEK_END)
1408
1409 const_eio (MCL_FUTURE)
1410 const_eio (MCL_CURRENT)
1411 const_eio (MCL_ONFAULT)
1412
1413 const_eio (MS_ASYNC)
1414 const_eio (MS_INVALIDATE)
1415 const_eio (MS_SYNC)
1416
1417 const_eio (MT_MODIFY)
1418
1419 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1420 const_eio (SYNC_FILE_RANGE_WRITE)
1421 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1422
1423 const_eio (FALLOC_FL_KEEP_SIZE)
1424 const_eio (FALLOC_FL_PUNCH_HOLE)
1425 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1426 const_eio (FALLOC_FL_ZERO_RANGE)
1427 const_eio (FALLOC_FL_INSERT_RANGE)
1428 const_eio (FALLOC_FL_UNSHARE_RANGE)
1429
1430 const_eio (RENAME_NOREPLACE)
1431 const_eio (RENAME_EXCHANGE)
1432 const_eio (RENAME_WHITEOUT)
1433
1434 const_eio (READDIR_DENTS)
1435 const_eio (READDIR_DIRS_FIRST)
1436 const_eio (READDIR_STAT_ORDER)
1437 const_eio (READDIR_FOUND_UNKNOWN)
1438
1439 const_eio (DT_UNKNOWN)
1440 const_eio (DT_FIFO)
1441 const_eio (DT_CHR)
1442 const_eio (DT_DIR)
1443 const_eio (DT_BLK)
1444 const_eio (DT_REG)
1445 const_eio (DT_LNK)
1446 const_eio (DT_SOCK)
1447 const_eio (DT_WHT)
1448 };
1449
1450 aio_stash = gv_stashpv ("IO::AIO" , 1);
1451 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1452 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1453 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1454
1455 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1456 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1457
1458 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1459
1460 /* allocate dummy pipe fd for aio_close */
1461 {
1462 int pipefd [2];
1463
1464 if (
1465#ifdef _WIN32
1466 _pipe (pipefd, 1, _O_BINARY) < 0
1467#else
1468 pipe (pipefd) < 0
1469 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1470#endif
1471 || close (pipefd [1]) < 0
1472 )
1473 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1474
1475 close_fd = pipefd [0];
1476 }
1477
1478 reinit ();
1479}
1480
617void 1481void
618min_parallel(nthreads) 1482reinit ()
619 int nthreads 1483 PROTOTYPE:
1484
1485void
1486max_poll_reqs (unsigned int nreqs)
620 PROTOTYPE: $ 1487 PROTOTYPE: $
1488 CODE:
1489 eio_set_max_poll_reqs (nreqs);
621 1490
622void 1491void
623max_parallel(nthreads) 1492max_poll_time (double nseconds)
624 int nthreads
625 PROTOTYPE: $ 1493 PROTOTYPE: $
626
627int
628max_outstanding(nreqs)
629 int nreqs
630 PROTOTYPE: $
631 CODE: 1494 CODE:
632 RETVAL = max_outstanding; 1495 eio_set_max_poll_time (nseconds);
1496
1497void
1498min_parallel (unsigned int nthreads)
1499 PROTOTYPE: $
1500 CODE:
1501 eio_set_min_parallel (nthreads);
1502
1503void
1504max_parallel (unsigned int nthreads)
1505 PROTOTYPE: $
1506 CODE:
1507 eio_set_max_parallel (nthreads);
1508
1509void
1510max_idle (unsigned int nthreads)
1511 PROTOTYPE: $
1512 CODE:
1513 eio_set_max_idle (nthreads);
1514
1515void
1516idle_timeout (unsigned int seconds)
1517 PROTOTYPE: $
1518 CODE:
1519 eio_set_idle_timeout (seconds);
1520
1521void
1522max_outstanding (unsigned int maxreqs)
1523 PROTOTYPE: $
1524 CODE:
633 max_outstanding = nreqs; 1525 max_outstanding = maxreqs;
634 1526
635void 1527void
636aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1528aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
637 SV * pathname
638 int flags
639 int mode
640 SV * callback
641 PROTOTYPE: $$$;$
642 CODE: 1529 PPCODE:
643{ 1530{
644 dREQ; 1531 dREQ;
645 1532
1533 req->type = EIO_WD_OPEN;
1534 req_set_path1 (req, pathname);
1535
1536 REQ_SEND;
1537}
1538
1539void
1540aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1541 PPCODE:
1542{
1543 dREQ;
1544
646 req->type = REQ_OPEN; 1545 req->type = EIO_OPEN;
647 req->data = newSVsv (pathname); 1546 req_set_path1 (req, pathname);
648 req->dataptr = SvPVbyte_nolen (req->data);
649 req->fd = flags; 1547 req->int1 = flags;
650 req->mode = mode; 1548 req->int2 = mode;
651 1549
652 send_req (req); 1550 REQ_SEND;
653} 1551}
654 1552
655void 1553void
656aio_close(fh,callback=&PL_sv_undef) 1554aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
657 SV * fh
658 SV * callback
659 PROTOTYPE: $;$
660 ALIAS: 1555 ALIAS:
661 aio_close = REQ_CLOSE
662 aio_fsync = REQ_FSYNC 1556 aio_fsync = EIO_FSYNC
663 aio_fdatasync = REQ_FDATASYNC 1557 aio_fdatasync = EIO_FDATASYNC
1558 aio_syncfs = EIO_SYNCFS
664 CODE: 1559 PPCODE:
665{ 1560{
1561 int fd = s_fileno_croak (fh, 0);
666 dREQ; 1562 dREQ;
667 1563
668 req->type = ix; 1564 req->type = ix;
669 req->fh = newSVsv (fh); 1565 req->sv1 = newSVsv (fh);
670 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1566 req->int1 = fd;
671 1567
672 send_req (req); 1568 REQ_SEND;
673} 1569}
674 1570
675void 1571void
1572aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1573 PPCODE:
1574{
1575 int fd = s_fileno_croak (fh, 0);
1576 dREQ;
1577
1578 req->type = EIO_SYNC_FILE_RANGE;
1579 req->sv1 = newSVsv (fh);
1580 req->int1 = fd;
1581 req->offs = offset;
1582 req->size = nbytes;
1583 req->int2 = flags;
1584
1585 REQ_SEND;
1586}
1587
1588void
1589aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1590 PPCODE:
1591{
1592 int fd = s_fileno_croak (fh, 0);
1593 dREQ;
1594
1595 req->type = EIO_FALLOCATE;
1596 req->sv1 = newSVsv (fh);
1597 req->int1 = fd;
1598 req->int2 = mode;
1599 req->offs = offset;
1600 req->size = len;
1601
1602 REQ_SEND;
1603}
1604
1605void
1606aio_close (SV *fh, SV *callback = &PL_sv_undef)
1607 PPCODE:
1608{
1609 int fd = s_fileno_croak (fh, 0);
1610 dREQ;
1611#if 0
1612 /* partially duplicate logic in s_fileno */
1613 SvGETMAGIC (fh);
1614
1615 if (SvROK (fh))
1616 {
1617 fh = SvRV (fh);
1618 SvGETMAGIC (fh);
1619 }
1620
1621 if (SvTYPE (fh) == SVt_PVGV)
1622 {
1623 /* perl filehandle */
1624 PerlIOUnix_refcnt_inc (fd);
1625 do_close ((GV *)fh, 1);
1626
1627 req->type = EIO_CLOSE;
1628 req->int1 = fd;
1629 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1630 }
1631 else
1632#endif
1633 {
1634 /* fd number */
1635 req->type = EIO_DUP2;
1636 req->int1 = close_fd;
1637 req->sv2 = newSVsv (fh);
1638 req->int2 = fd;
1639 }
1640
1641 REQ_SEND;
1642}
1643
1644void
1645aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1646 PPCODE:
1647{
1648 int fd = s_fileno_croak (fh, 0);
1649 dREQ;
1650
1651 req->type = EIO_SEEK;
1652 req->sv1 = newSVsv (fh);
1653 req->int1 = fd;
1654 req->offs = SvVAL64 (offset);
1655 req->int2 = whence;
1656
1657 REQ_SEND;
1658}
1659
1660void
676aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1661aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
677 SV * fh
678 UV offset
679 UV length
680 SV * data
681 UV dataoffset
682 SV * callback
683 ALIAS: 1662 ALIAS:
684 aio_read = REQ_READ 1663 aio_read = EIO_READ
685 aio_write = REQ_WRITE 1664 aio_write = EIO_WRITE
686 PROTOTYPE: $$$$$;$
687 CODE: 1665 PPCODE:
688{ 1666{
689 aio_req req;
690 STRLEN svlen; 1667 STRLEN svlen;
1668 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
691 char *svptr = SvPVbyte (data, svlen); 1669 char *svptr = SvPVbyte (data, svlen);
692 1670 UV len = SvUV (length);
693 SvUPGRADE (data, SVt_PV);
694 SvPOK_on (data);
695 1671
696 if (dataoffset < 0) 1672 if (dataoffset < 0)
697 dataoffset += svlen; 1673 dataoffset += svlen;
698 1674
699 if (dataoffset < 0 || dataoffset > svlen) 1675 if (dataoffset < 0 || dataoffset > svlen)
700 croak ("data offset outside of string"); 1676 croak ("dataoffset outside of data scalar");
701 1677
702 if (ix == REQ_WRITE) 1678 if (ix == EIO_WRITE)
703 { 1679 {
704 /* write: check length and adjust. */ 1680 /* write: check length and adjust. */
705 if (length < 0 || length + dataoffset > svlen) 1681 if (!SvOK (length) || len + dataoffset > svlen)
706 length = svlen - dataoffset; 1682 len = svlen - dataoffset;
707 } 1683 }
708 else 1684 else
709 { 1685 {
710 /* read: grow scalar as necessary */ 1686 /* read: check type and grow scalar as necessary */
1687 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
711 svptr = SvGROW (data, length + dataoffset); 1688 svptr = sv_grow (data, len + dataoffset + 1);
1689 else if (SvCUR (data) < len + dataoffset)
1690 croak ("length + dataoffset outside of scalar, and cannot grow");
712 } 1691 }
713
714 if (length < 0)
715 croak ("length must not be negative");
716 1692
717 { 1693 {
718 dREQ; 1694 dREQ;
719 1695
720 req->type = ix; 1696 req->type = ix;
721 req->fh = newSVsv (fh); 1697 req->sv1 = newSVsv (fh);
722 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1698 req->int1 = fd;
723 : IoOFP (sv_2io (fh))); 1699 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
724 req->offset = offset; 1700 req->size = len;
725 req->length = length;
726 req->data = SvREFCNT_inc (data); 1701 req->sv2 = SvREFCNT_inc (data);
727 req->dataptr = (char *)svptr + dataoffset; 1702 req->ptr2 = (char *)svptr + dataoffset;
1703 req->stroffset = dataoffset;
728 1704
729 if (!SvREADONLY (data)) 1705 if (!SvREADONLY (data))
730 { 1706 {
731 SvREADONLY_on (data); 1707 SvREADONLY_on (data);
732 req->data2ptr = (void *)data; 1708 req->flags |= FLAG_SV2_RO_OFF;
733 } 1709 }
734 1710
735 send_req (req); 1711 REQ_SEND;
736 } 1712 }
737} 1713}
738 1714
739void 1715void
740aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1716aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
741 SV * out_fh
742 SV * in_fh
743 UV in_offset
744 UV length
745 SV * callback
746 PROTOTYPE: $$$$;$
747 CODE:
748{
749 dREQ;
750
751 req->type = REQ_SENDFILE;
752 req->fh = newSVsv (out_fh);
753 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
754 req->fh2 = newSVsv (in_fh);
755 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
756 req->offset = in_offset;
757 req->length = length;
758
759 send_req (req);
760}
761
762void
763aio_readahead(fh,offset,length,callback=&PL_sv_undef)
764 SV * fh
765 UV offset
766 IV length
767 SV * callback
768 PROTOTYPE: $$$;$
769 CODE:
770{
771 dREQ;
772
773 req->type = REQ_READAHEAD;
774 req->fh = newSVsv (fh);
775 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
776 req->offset = offset;
777 req->length = length;
778
779 send_req (req);
780}
781
782void
783aio_stat(fh_or_path,callback=&PL_sv_undef)
784 SV * fh_or_path
785 SV * callback
786 ALIAS: 1717 ALIAS:
787 aio_stat = REQ_STAT 1718 aio_ioctl = EIO_IOCTL
788 aio_lstat = REQ_LSTAT 1719 aio_fcntl = EIO_FCNTL
789 CODE: 1720 PPCODE:
790{ 1721{
791 dREQ; 1722 int fd = s_fileno_croak (fh, 0);
1723 char *svptr;
792 1724
793 New (0, req->statdata, 1, Stat_t); 1725 if (SvPOK (arg) || !SvNIOK (arg))
794 if (!req->statdata)
795 { 1726 {
796 free_req (req); 1727 STRLEN svlen;
797 croak ("out of memory during aio_req->statdata allocation"); 1728 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
798 } 1729#ifdef IOCPARM_LEN
1730 STRLEN need = IOCPARM_LEN (request);
1731#else
1732 STRLEN need = 256;
1733#endif
799 1734
800 if (SvPOK (fh_or_path)) 1735 if (svlen < need)
801 { 1736 svptr = SvGROW (arg, need);
802 req->type = ix;
803 req->data = newSVsv (fh_or_path);
804 req->dataptr = SvPVbyte_nolen (req->data);
805 } 1737 }
806 else 1738 else
1739 svptr = (char *)SvIV (arg);
1740
807 { 1741 {
1742 dREQ;
1743
808 req->type = REQ_FSTAT; 1744 req->type = ix;
809 req->fh = newSVsv (fh_or_path); 1745 req->sv1 = newSVsv (fh);
810 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1746 req->int1 = fd;
1747 req->int2 = (long)request;
1748 req->sv2 = SvREFCNT_inc (arg);
1749 req->ptr2 = svptr;
1750
1751 REQ_SEND;
811 } 1752 }
812
813 send_req (req);
814} 1753}
815 1754
816void 1755void
817aio_unlink(pathname,callback=&PL_sv_undef) 1756aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
818 SV * pathname
819 SV * callback
820 ALIAS: 1757 ALIAS:
821 aio_unlink = REQ_UNLINK 1758 aio_readlink = EIO_READLINK
822 aio_rmdir = REQ_RMDIR 1759 aio_realpath = EIO_REALPATH
1760 PPCODE:
1761{
1762 dREQ;
1763
1764 req->type = ix;
1765 req_set_path1 (req, pathname);
1766
1767 REQ_SEND;
1768}
1769
1770void
1771aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1772 PPCODE:
1773{
1774 int ifd = s_fileno_croak (in_fh , 0);
1775 int ofd = s_fileno_croak (out_fh, 1);
1776 dREQ;
1777
1778 req->type = EIO_SENDFILE;
1779 req->sv1 = newSVsv (out_fh);
1780 req->int1 = ofd;
1781 req->sv2 = newSVsv (in_fh);
1782 req->int2 = ifd;
1783 req->offs = in_offset;
1784 req->size = length;
1785
1786 REQ_SEND;
1787}
1788
1789void
1790aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1791 PPCODE:
1792{
1793 int fd = s_fileno_croak (fh, 0);
1794 dREQ;
1795
1796 req->type = EIO_READAHEAD;
1797 req->sv1 = newSVsv (fh);
1798 req->int1 = fd;
1799 req->offs = offset;
1800 req->size = length;
1801
1802 REQ_SEND;
1803}
1804
1805void
1806aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1807 ALIAS:
1808 aio_stat = EIO_STAT
1809 aio_lstat = EIO_LSTAT
1810 aio_statvfs = EIO_STATVFS
1811 PPCODE:
1812{
1813 dREQ;
1814
1815 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1816
1817 REQ_SEND;
1818}
1819
1820void
1821st_xtime ()
1822 ALIAS:
1823 st_atime = 0x01
1824 st_mtime = 0x02
1825 st_ctime = 0x04
1826 st_btime = 0x08
1827 st_xtime = 0x0f
1828 PPCODE:
1829 EXTEND (SP, 4);
1830 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1831 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1832 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1833 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1834
1835void
1836st_xtimensec ()
1837 ALIAS:
1838 st_atimensec = 0x01
1839 st_mtimensec = 0x02
1840 st_ctimensec = 0x04
1841 st_btimensec = 0x08
1842 st_xtimensec = 0x0f
1843 st_btimesec = 0x10
1844 st_gen = 0x20
1845 PPCODE:
1846 EXTEND (SP, 4);
1847 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1848 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1849 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1850 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1851 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1852 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1853
1854UV
1855major (UV dev)
1856 ALIAS:
1857 minor = 1
823 CODE: 1858 CODE:
1859 RETVAL = ix ? minor (dev) : major (dev);
1860 OUTPUT:
1861 RETVAL
1862
1863UV
1864makedev (UV maj, UV min)
1865 CODE:
1866 RETVAL = makedev (maj, min);
1867 OUTPUT:
1868 RETVAL
1869
1870void
1871aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1872 PPCODE:
1873{
1874 dREQ;
1875
1876 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1877 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1878 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1879
1880 REQ_SEND;
1881}
1882
1883void
1884aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1885 PPCODE:
1886{
1887 dREQ;
1888
1889 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1890 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1891
1892 REQ_SEND;
1893}
1894
1895void
1896aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1897 PPCODE:
1898{
1899 dREQ;
1900
1901 req->int2 = mode;
1902 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1903
1904 REQ_SEND;
1905}
1906
1907void
1908aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1909 PPCODE:
1910{
1911 dREQ;
1912
1913 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1914 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1915 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1916
1917 REQ_SEND;
1918}
1919
1920void
1921aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1922 PPCODE:
1923{
1924 dREQ;
1925
1926 req->type = EIO_READDIR;
1927 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1928
1929 if (flags & EIO_READDIR_DENTS)
1930 req->int1 |= EIO_READDIR_CUSTOM2;
1931
1932 req_set_path1 (req, pathname);
1933
1934 REQ_SEND;
1935}
1936
1937void
1938aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1939 PPCODE:
1940{
1941 dREQ;
1942
1943 req->type = EIO_MKDIR;
1944 req->int2 = mode;
1945 req_set_path1 (req, pathname);
1946
1947 REQ_SEND;
1948}
1949
1950void
1951aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1952 ALIAS:
1953 aio_unlink = EIO_UNLINK
1954 aio_rmdir = EIO_RMDIR
1955 aio_readdir = EIO_READDIR
1956 PPCODE:
824{ 1957{
825 dREQ; 1958 dREQ;
826 1959
827 req->type = ix; 1960 req->type = ix;
828 req->data = newSVsv (pathname); 1961 req_set_path1 (req, pathname);
829 req->dataptr = SvPVbyte_nolen (req->data);
830
831 send_req (req);
832}
833 1962
1963 REQ_SEND;
1964}
1965
834void 1966void
835aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1967aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
836 SV * oldpath 1968 ALIAS:
837 SV * newpath 1969 aio_link = EIO_LINK
838 SV * callback 1970 aio_symlink = EIO_SYMLINK
1971 aio_rename = EIO_RENAME
839 CODE: 1972 PPCODE:
840{ 1973{
1974 eio_wd wd2 = 0;
841 dREQ; 1975 dREQ;
842 1976
843 req->type = REQ_SYMLINK; 1977 req->type = ix;
844 req->fh = newSVsv (oldpath); 1978 req_set_path1 (req, oldpath);
845 req->data2ptr = SvPVbyte_nolen (req->fh); 1979 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
846 req->data = newSVsv (newpath); 1980 req->int3 = (long)wd2;
847 req->dataptr = SvPVbyte_nolen (req->data);
848 1981
849 send_req (req); 1982 REQ_SEND;
850} 1983}
851 1984
852void 1985void
853flush() 1986aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
854 PROTOTYPE: 1987 PPCODE:
1988{
1989 eio_wd wd2 = 0;
1990 dREQ;
1991
1992 req->type = EIO_RENAME;
1993 req_set_path1 (req, oldpath);
1994 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1995 req->int2 = flags;
1996 req->int3 = (long)wd2;
1997
1998 REQ_SEND;
1999}
2000
2001void
2002aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
2003 PPCODE:
2004{
2005 dREQ;
2006
2007 req->type = EIO_MKNOD;
2008 req->int2 = (mode_t)mode;
2009 req->offs = dev;
2010 req_set_path1 (req, pathname);
2011
2012 REQ_SEND;
2013}
2014
2015void
2016aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
2017 ALIAS:
2018 aio_mtouch = EIO_MTOUCH
2019 aio_msync = EIO_MSYNC
2020 PPCODE:
2021{
2022 STRLEN svlen;
2023 char *svptr = SvPVbyte (data, svlen);
2024 UV len = SvUV (length);
2025
2026 if (flags < 0)
2027 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
2028
2029 if (offset < 0)
2030 offset += svlen;
2031
2032 if (offset < 0 || offset > svlen)
2033 croak ("offset outside of scalar");
2034
2035 if (!SvOK (length) || len + offset > svlen)
2036 len = svlen - offset;
2037
2038 {
2039 dREQ;
2040
2041 req->type = ix;
2042 req->sv2 = SvREFCNT_inc (data);
2043 req->ptr2 = (char *)svptr + offset;
2044 req->size = len;
2045 req->int1 = flags;
2046
2047 REQ_SEND;
2048 }
2049}
2050
2051void
2052aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
2053 PPCODE:
2054{
2055 STRLEN svlen;
2056 char *svptr = SvPVbyte (data, svlen);
2057 UV len = SvUV (length);
2058
2059 if (offset < 0)
2060 offset += svlen;
2061
2062 if (offset < 0 || offset > svlen)
2063 croak ("offset outside of scalar");
2064
2065 if (!SvOK (length) || len + offset > svlen)
2066 len = svlen - offset;
2067
2068 {
2069 dREQ;
2070
2071 req->type = EIO_MLOCK;
2072 req->sv2 = SvREFCNT_inc (data);
2073 req->ptr2 = (char *)svptr + offset;
2074 req->size = len;
2075
2076 REQ_SEND;
2077 }
2078}
2079
2080void
2081aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
2082 PPCODE:
2083{
2084 dREQ;
2085
2086 req->type = EIO_MLOCKALL;
2087 req->int1 = flags;
2088
2089 REQ_SEND;
2090}
2091
2092void
2093aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
2094 PPCODE:
2095{
2096 int fd = s_fileno_croak (fh, 0);
2097 dREQ;
2098
2099 req->type = EIO_CUSTOM;
2100 req->sv1 = newSVsv (fh);
2101 req->int1 = fd;
2102
2103 req->feed = fiemap;
2104#if HAVE_FIEMAP
2105 /* keep our fingers crossed that the next two types are 64 bit */
2106 req->offs = start;
2107 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
2108 req->int2 = flags;
2109 req->int3 = SvOK (count) ? SvIV (count) : -1;
2110#endif
2111
2112 REQ_SEND;
2113}
2114
2115void
2116aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
2117 PPCODE:
2118{
2119 char *svptr = 0;
2120
2121 sv_clear_foreign (data);
2122
2123 if (length) /* known length, directly read into scalar */
2124 {
2125 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2126 svptr = sv_grow (data, length + 1);
2127 else if (SvCUR (data) < length)
2128 croak ("length outside of scalar, and cannot grow");
2129 else
2130 svptr = SvPVbyte_nolen (data);
2131 }
2132
2133 {
2134 dREQ;
2135
2136 req->type = EIO_SLURP;
2137 req_set_path1 (req, pathname);
2138 req->offs = offset;
2139 req->size = length;
2140 req->sv2 = SvREFCNT_inc (data);
2141 req->ptr2 = svptr;
2142
2143 if (!SvREADONLY (data))
2144 {
2145 SvREADONLY_on (data);
2146 req->flags |= FLAG_SV2_RO_OFF;
2147 }
2148
2149 REQ_SEND;
2150 }
2151}
2152
2153void
2154aio_busy (double delay, SV *callback = &PL_sv_undef)
2155 PPCODE:
2156{
2157 dREQ;
2158
2159 req->type = EIO_BUSY;
2160 req->nv1 = delay < 0. ? 0. : delay;
2161
2162 REQ_SEND;
2163}
2164
2165void
2166aio_group (SV *callback = &PL_sv_undef)
2167 PPCODE:
2168{
2169 dREQ;
2170
2171 req->type = EIO_GROUP;
2172
2173 PUTBACK;
2174 req_submit (req);
2175 SPAGAIN;
2176
2177 XPUSHs (req_sv (req, aio_grp_stash));
2178}
2179
2180void
2181aio_nop (SV *callback = &PL_sv_undef)
2182 ALIAS:
2183 aio_nop = EIO_NOP
2184 aio_sync = EIO_SYNC
2185 PPCODE:
2186{
2187 dREQ;
2188
2189 req->type = ix;
2190
2191 REQ_SEND;
2192}
2193
2194int
2195aioreq_pri (int pri = NO_INIT)
855 CODE: 2196 CODE:
2197 RETVAL = next_pri;
2198 if (items > 0)
2199 {
2200 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2201 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2202 next_pri = pri;
2203 }
2204 OUTPUT:
2205 RETVAL
2206
2207void
2208aioreq_nice (int nice = 0)
2209 CODE:
2210 nice = next_pri - nice;
2211 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2212 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2213 next_pri = nice;
2214
2215void
2216flush ()
2217 CODE:
856 while (nreqs) 2218 while (eio_nreqs ())
857 { 2219 {
858 poll_wait (); 2220 poll_wait ();
859 poll_cb (); 2221 poll_cb ();
860 } 2222 }
861 2223
862void 2224int
863poll() 2225poll ()
864 PROTOTYPE:
865 CODE: 2226 CODE:
866 if (nreqs)
867 {
868 poll_wait (); 2227 poll_wait ();
869 poll_cb (); 2228 RETVAL = poll_cb ();
870 }
871
872int
873poll_fileno()
874 PROTOTYPE:
875 CODE:
876 RETVAL = respipe [0];
877 OUTPUT: 2229 OUTPUT:
878 RETVAL 2230 RETVAL
879 2231
880int 2232int
2233poll_fileno ()
2234 CODE:
2235 RETVAL = s_epipe_fd (&respipe);
2236 OUTPUT:
2237 RETVAL
2238
2239int
881poll_cb(...) 2240poll_cb (...)
882 PROTOTYPE: 2241 PROTOTYPE:
883 CODE: 2242 CODE:
884 RETVAL = poll_cb (); 2243 RETVAL = poll_cb ();
885 OUTPUT: 2244 OUTPUT:
886 RETVAL 2245 RETVAL
887 2246
888void 2247void
889poll_wait() 2248poll_wait ()
2249 CODE:
2250 poll_wait ();
2251
2252int
2253nreqs ()
2254 CODE:
2255 RETVAL = eio_nreqs ();
2256 OUTPUT:
2257 RETVAL
2258
2259int
2260nready ()
2261 CODE:
2262 RETVAL = eio_nready ();
2263 OUTPUT:
2264 RETVAL
2265
2266int
2267npending ()
2268 CODE:
2269 RETVAL = eio_npending ();
2270 OUTPUT:
2271 RETVAL
2272
2273int
2274nthreads ()
2275 CODE:
2276 RETVAL = eio_nthreads ();
2277 OUTPUT:
2278 RETVAL
2279
2280int
2281fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2282 CODE:
2283 RETVAL = posix_fadvise (fh, offset, length, advice);
2284 OUTPUT:
2285 RETVAL
2286
2287IV
2288sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2289 CODE:
2290 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2291 OUTPUT:
2292 RETVAL
2293
2294void
2295mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2296 PPCODE:
2297 sv_clear_foreign (scalar);
2298{
2299 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2300 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2301 if (addr == (void *)-1)
2302 XSRETURN_NO;
2303
2304 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2305
2306 if (!(prot & PROT_WRITE))
2307 SvREADONLY_on (scalar);
2308
2309 XSRETURN_YES;
2310}
2311
2312void
2313munmap (SV *scalar)
2314 CODE:
2315 sv_clear_foreign (scalar);
2316
2317SV *
2318mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2319 CODE:
2320{
2321 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2322 void *new;
2323
2324 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2325 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2326
2327 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2328
2329 RETVAL = &PL_sv_no;
2330
2331 if (new != (void *)-1)
2332 {
2333 RETVAL = new == (void *)mg->mg_ptr
2334 ? newSVpvn ("0 but true", 10)
2335 : &PL_sv_yes;
2336
2337 mg->mg_ptr = (char *)new;
2338 mg->mg_obj = (SV *)new_length;
2339
2340 SvPVX (scalar) = mg->mg_ptr;
2341 SvCUR_set (scalar, new_length);
2342 }
2343}
2344 OUTPUT:
2345 RETVAL
2346
2347int
2348madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2349 ALIAS:
2350 mprotect = 1
2351 CODE:
2352{
2353 STRLEN svlen;
2354 void *addr = SvPVbyte (scalar, svlen);
2355 STRLEN len = SvUV (length);
2356
2357 if (offset < 0)
2358 offset += svlen;
2359
2360 if (offset < 0 || offset > svlen)
2361 croak ("offset outside of scalar");
2362
2363 if (!SvOK (length) || len + offset > svlen)
2364 len = svlen - offset;
2365
2366 addr = (void *)(((intptr_t)addr) + offset);
2367 eio_page_align (&addr, &len);
2368
2369 switch (ix)
2370 {
2371 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2372 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2373 }
2374}
2375 OUTPUT:
2376 RETVAL
2377
2378int
2379munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2380 CODE:
2381{
2382 STRLEN svlen;
2383 void *addr = SvPVbyte (scalar, svlen);
2384 size_t len = SvUV (length);
2385
2386 if (offset < 0)
2387 offset += svlen;
2388
2389 if (offset < 0 || offset > svlen)
2390 croak ("offset outside of scalar");
2391
2392 if (!SvOK (length) || len + offset > svlen)
2393 len = svlen - offset;
2394
2395 addr = (void *)(((intptr_t)addr) + offset);
2396 eio_page_align (&addr, &len);
2397#if _POSIX_MEMLOCK_RANGE
2398 RETVAL = munlock (addr, len);
2399#else
2400 RETVAL = EIO_ENOSYS ();
2401#endif
2402}
2403 OUTPUT:
2404 RETVAL
2405
2406int
2407mlockall (int flags)
2408 PROTOTYPE: $;
2409 CODE:
2410 RETVAL = eio_mlockall_sync (flags);
2411 OUTPUT:
2412 RETVAL
2413
2414int
2415munlockall ()
2416 CODE:
2417#if _POSIX_MEMLOCK
2418 munlockall ();
2419#else
2420 RETVAL = EIO_ENOSYS ();
2421#endif
2422 OUTPUT:
2423 RETVAL
2424
2425int
2426statx (SV8 *pathname, int flags, UV mask)
2427 CODE:
2428{
2429 /* undocumented, and might go away, and anyway, should use eio_statx */
2430 SV *wdsv = 0;
2431 SV *pathsv = 0;
2432 eio_wd wd = EIO_CWD;
2433 void *ptr;
2434 int res;
2435
2436 req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
2437 RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
2438
2439 SvREFCNT_dec (pathsv);
2440 SvREFCNT_dec (wdsv);
2441}
2442 OUTPUT:
2443 RETVAL
2444
2445U32
2446stx_mode ()
890 PROTOTYPE: 2447 PROTOTYPE:
891 CODE: 2448 CODE:
2449#if HAVE_STATX
2450 RETVAL = stx.stx_mode;
2451#else
2452 XSRETURN_UNDEF;
2453#endif
2454 OUTPUT:
2455 RETVAL
2456
2457#define STATX_OFFSET_mask statx_offsetof (stx_mask)
2458#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
2459#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
2460#define STATX_OFFSET_uid statx_offsetof (stx_uid)
2461#define STATX_OFFSET_gid statx_offsetof (stx_gid)
2462#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
2463#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
2464#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
2465#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
2466#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
2467#define STATX_OFFSET_ino statx_offsetof (stx_ino)
2468#define STATX_OFFSET_size statx_offsetof (stx_size)
2469#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
2470#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
2471#define STATX_OFFSET_atime statx_offsetof (stx_atime)
2472#define STATX_OFFSET_btime statx_offsetof (stx_btime)
2473#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
2474#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
2475
2476U32
2477stx_mask ()
2478 PROTOTYPE:
2479 ALIAS:
2480 stx_mask = STATX_OFFSET_mask
2481 stx_blksize = STATX_OFFSET_blksize
2482 stx_nlink = STATX_OFFSET_nlink
2483 stx_uid = STATX_OFFSET_uid
2484 stx_gid = STATX_OFFSET_gid
2485 stx_rdev_major = STATX_OFFSET_rdev_major
2486 stx_rdev_minor = STATX_OFFSET_rdev_minor
2487 stx_dev_major = STATX_OFFSET_dev_major
2488 stx_dev_minor = STATX_OFFSET_dev_minor
2489 CODE:
2490#if HAVE_STATX
2491 RETVAL = *(__u32 *)((char *)&stx + ix);
2492#else
2493 XSRETURN_UNDEF;
2494#endif
2495 OUTPUT:
2496 RETVAL
2497
2498VAL64
2499stx_attributes ()
2500 PROTOTYPE:
2501 ALIAS:
2502 stx_attributes = STATX_OFFSET_attributes
2503 stx_ino = STATX_OFFSET_ino
2504 stx_size = STATX_OFFSET_size
2505 stx_blocks = STATX_OFFSET_blocks
2506 stx_attributes_mask = STATX_OFFSET_attributes_mask
2507 CODE:
2508#if HAVE_STATX
2509 RETVAL = *(__u64 *)((char *)&stx + ix);
2510#else
2511 XSRETURN_UNDEF;
2512#endif
2513 OUTPUT:
2514 RETVAL
2515
2516NV
2517stx_atime ()
2518 PROTOTYPE:
2519 ALIAS:
2520 stx_atime = STATX_OFFSET_atime
2521 stx_btime = STATX_OFFSET_btime
2522 stx_ctime = STATX_OFFSET_ctime
2523 stx_mtime = STATX_OFFSET_mtime
2524 CODE:
2525#if HAVE_STATX
2526 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2527 RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
2528#else
2529 XSRETURN_UNDEF;
2530#endif
2531 OUTPUT:
2532 RETVAL
2533
2534VAL64
2535stx_atimesec ()
2536 PROTOTYPE:
2537 ALIAS:
2538 stx_atimesec = STATX_OFFSET_atime
2539 stx_btimesec = STATX_OFFSET_btime
2540 stx_ctimesec = STATX_OFFSET_ctime
2541 stx_mtimesec = STATX_OFFSET_mtime
2542 CODE:
2543#if HAVE_STATX
2544 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2545 RETVAL = ts->tv_sec;
2546#else
2547 XSRETURN_UNDEF;
2548#endif
2549 OUTPUT:
2550 RETVAL
2551
2552U32
2553stx_atimensec ()
2554 PROTOTYPE:
2555 ALIAS:
2556 stx_atimensec = STATX_OFFSET_atime
2557 stx_btimensec = STATX_OFFSET_btime
2558 stx_ctimensec = STATX_OFFSET_ctime
2559 stx_mtimensec = STATX_OFFSET_mtime
2560 CODE:
2561#if HAVE_STATX
2562 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2563 RETVAL = ts->tv_nsec;
2564#else
2565 RETVAL = 0;
2566#endif
2567 OUTPUT:
2568 RETVAL
2569
2570void
2571accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
2572 PPCODE:
2573{
2574 SV *retval;
2575#if HAVE_ACCEPT4
2576 socklen_t salen_ = salen ? salen + 1 : 0;
2577
892 if (nreqs) 2578 if (salen)
893 poll_wait (); 2579 {
2580 sv_upgrade (sockaddr, SVt_PV);
2581 sv_grow (sockaddr, salen_);
2582 }
2583
2584 int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
2585
2586 retval = newmortalFH (res, O_RDWR);
2587
2588 if (res >= 0 && salen > 0)
2589 {
2590 if (salen_ > salen + 1)
2591 salen_ = salen + 1;
2592
2593 SvPOK_only (sockaddr);
2594 SvCUR_set (sockaddr, salen_);
2595 }
2596#else
2597 errno = ENOSYS;
2598 retval = &PL_sv_undef;
2599#endif
2600 XPUSHs (retval);
2601}
2602
2603ssize_t
2604splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2605 CODE:
2606{
2607#if HAVE_LINUX_SPLICE
2608 loff_t off_in_, off_out_;
2609 RETVAL = splice (
2610 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2611 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2612 length, flags
2613 );
2614#else
2615 RETVAL = EIO_ENOSYS ();
2616#endif
2617}
2618 OUTPUT:
2619 RETVAL
2620
2621ssize_t
2622tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2623 CODE:
2624#if HAVE_LINUX_SPLICE
2625 RETVAL = tee (rfh, wfh, length, flags);
2626#else
2627 RETVAL = EIO_ENOSYS ();
2628#endif
2629 OUTPUT:
2630 RETVAL
894 2631
895int 2632int
896nreqs() 2633pipesize (aio_rfd rfh, int new_size = -1)
2634 PROTOTYPE: $;$
2635 CODE:
2636#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2637 if (new_size >= 0)
2638 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2639 else
2640 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2641#else
2642 errno = ENOSYS;
2643 RETVAL = -1;
2644#endif
2645 OUTPUT:
2646 RETVAL
2647
2648void
2649pipe2 (int flags = 0)
897 PROTOTYPE: 2650 PROTOTYPE: ;$
2651 PPCODE:
2652{
2653 int fd[2];
2654 int res;
2655
2656 if (flags)
2657#if HAVE_PIPE2
2658 res = pipe2 (fd, flags);
2659#else
2660 res = (errno = ENOSYS, -1);
2661#endif
2662 else
2663 res = pipe (fd);
2664
2665 if (!res)
2666 {
2667 EXTEND (SP, 2);
2668 PUSHs (newmortalFH (fd[0], O_RDONLY));
2669 PUSHs (newmortalFH (fd[1], O_WRONLY));
2670 }
2671}
2672
2673void
2674pidfd_open (int pid, unsigned int flags = 0)
2675 PPCODE:
2676{
2677 /*GENDEF0_SYSCALL(pidfd_open,434)*/
2678 int fd = syscall (SYS_pidfd_open, pid, flags);
2679 XPUSHs (newmortalFH (fd, O_RDWR));
2680}
2681
2682int
2683pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
2684 PPCODE:
2685{
2686 int res;
2687 siginfo_t si = { 0 };
2688
2689 if (SvOK (siginfo))
2690 {
2691 HV *hv;
2692 SV **svp;
2693
2694 if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
2695 croak ("siginfo argument must be a hashref code, pid, uid and value_int or value_ptr members, caught");
2696
2697 hv = (HV *)SvRV (siginfo);
2698
2699 if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
2700 if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
2701 if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
2702 if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
2703 if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
2704 }
2705
2706 /*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
2707 res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
2708
2709 XPUSHs (sv_2mortal (newSViv (res)));
2710}
2711
2712void
2713pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
2714 PPCODE:
2715{
2716 /*GENDEF0_SYSCALL(pidfd_getfd,438)*/
2717 int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
2718 XPUSHs (newmortalFH (fd, O_RDWR));
2719}
2720
2721void
2722eventfd (unsigned int initval = 0, int flags = 0)
2723 PPCODE:
2724{
2725 int fd;
2726#if HAVE_EVENTFD
2727 fd = eventfd (initval, flags);
2728#else
2729 fd = (errno = ENOSYS, -1);
2730#endif
2731
2732 XPUSHs (newmortalFH (fd, O_RDWR));
2733}
2734
2735void
2736timerfd_create (int clockid, int flags = 0)
2737 PPCODE:
2738{
2739 int fd;
2740#if HAVE_TIMERFD
2741 fd = timerfd_create (clockid, flags);
2742#else
2743 fd = (errno = ENOSYS, -1);
2744#endif
2745
2746 XPUSHs (newmortalFH (fd, O_RDWR));
2747}
2748
2749void
2750timerfd_settime (SV *fh, int flags, NV interval, NV value)
2751 PPCODE:
2752{
2753 int fd = s_fileno_croak (fh, 0);
2754#if HAVE_TIMERFD
2755 int res;
2756 struct itimerspec its, ots;
2757
2758 ts_set (&its.it_interval, interval);
2759 ts_set (&its.it_value , value);
2760 res = timerfd_settime (fd, flags, &its, &ots);
2761
2762 if (!res)
2763 {
2764 EXTEND (SP, 2);
2765 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2766 PUSHs (newSVnv (ts_get (&ots.it_value)));
2767 }
2768#else
2769 errno = ENOSYS;
2770#endif
2771}
2772
2773void
2774timerfd_gettime (SV *fh)
2775 PPCODE:
2776{
2777 int fd = s_fileno_croak (fh, 0);
2778#if HAVE_TIMERFD
2779 int res;
2780 struct itimerspec ots;
2781 res = timerfd_gettime (fd, &ots);
2782
2783 if (!res)
2784 {
2785 EXTEND (SP, 2);
2786 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2787 PUSHs (newSVnv (ts_get (&ots.it_value)));
2788 }
2789#else
2790 errno = ENOSYS;
2791#endif
2792}
2793
2794void
2795memfd_create (SV8 *pathname, int flags = 0)
2796 PPCODE:
2797{
2798 int fd;
2799#if HAVE_MEMFD_CREATE
2800 fd = memfd_create (SvPVbyte_nolen (pathname), flags);
2801#else
2802 fd = (errno = ENOSYS, -1);
2803#endif
2804
2805 XPUSHs (newmortalFH (fd, O_RDWR));
2806}
2807
2808UV
2809get_fdlimit ()
898 CODE: 2810 CODE:
899 RETVAL = nreqs; 2811#if HAVE_RLIMITS
2812 struct rlimit rl;
2813 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2814 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2815#endif
2816 XSRETURN_UNDEF;
900 OUTPUT: 2817 OUTPUT:
901 RETVAL 2818 RETVAL
902 2819
2820void
2821min_fdlimit (UV limit = 0x7fffffffU)
2822 CODE:
2823{
2824#if HAVE_RLIMITS
2825 struct rlimit rl;
2826 rlim_t orig_rlim_max;
2827 UV bit;
2828
2829 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2830 goto fail;
2831
2832 if (rl.rlim_cur == RLIM_INFINITY)
2833 XSRETURN_YES;
2834
2835 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2836
2837 if (rl.rlim_cur < limit)
2838 {
2839 rl.rlim_cur = limit;
2840
2841 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2842 rl.rlim_max = rl.rlim_cur;
2843 }
2844
2845 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2846 XSRETURN_YES;
2847
2848 if (errno == EPERM)
2849 {
2850 /* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2851 /* our limit overflows a system-wide limit */
2852 /* try an adaptive algorithm, but do not lower the hardlimit */
2853 rl.rlim_max = 0;
2854 for (bit = 0x40000000U; bit; bit >>= 1)
2855 {
2856 rl.rlim_max |= bit;
2857 rl.rlim_cur = rl.rlim_max;
2858
2859 /* never decrease the hard limit */
2860 if (rl.rlim_max < orig_rlim_max)
2861 break;
2862
2863 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2864 rl.rlim_max &= ~bit; /* too high, remove bit again */
2865 }
2866
2867 /* now, raise the soft limit to the max permitted */
2868 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2869 {
2870 rl.rlim_cur = rl.rlim_max;
2871 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2872 errno = EPERM;
2873 }
2874 }
2875#endif
2876 fail:
2877 XSRETURN_UNDEF;
2878}
2879
2880void _on_next_submit (SV *cb)
2881 CODE:
2882 SvREFCNT_dec (on_next_submit);
2883 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2884
2885PROTOTYPES: DISABLE
2886
2887MODULE = IO::AIO PACKAGE = IO::AIO::WD
2888
2889BOOT:
2890{
2891 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2892 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2893}
2894
2895void
2896DESTROY (SV *self)
2897 CODE:
2898{
2899 aio_wd wd = SvAIO_WD (self);
2900#if HAVE_AT
2901 {
2902 SV *callback = &PL_sv_undef;
2903 dREQ; /* clobbers next_pri :/ */
2904 next_pri = req->pri; /* restore next_pri */
2905 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2906 req->type = EIO_WD_CLOSE;
2907 req->wd = wd;
2908 REQ_SEND;
2909 }
2910#else
2911 eio_wd_close_sync (wd);
2912#endif
2913}
2914
2915MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2916
2917void
2918cancel (aio_req_ornot req)
2919 CODE:
2920 eio_cancel (req);
2921
2922void
2923cb (aio_req_ornot req, SV *callback = NO_INIT)
2924 PPCODE:
2925{
2926 if (GIMME_V != G_VOID)
2927 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2928
2929 if (items > 1)
2930 {
2931 SV *cb_cv = get_cb (callback);
2932
2933 SvREFCNT_dec (req->callback);
2934 req->callback = SvREFCNT_inc (cb_cv);
2935 }
2936}
2937
2938MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2939
2940void
2941add (aio_req grp, ...)
2942 PPCODE:
2943{
2944 int i;
2945
2946 if (grp->int1 == 2)
2947 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2948
2949 for (i = 1; i < items; ++i )
2950 {
2951 aio_req req;
2952
2953 if (GIMME_V != G_VOID)
2954 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2955
2956 req = SvAIO_REQ (ST (i));
2957
2958 if (req)
2959 eio_grp_add (grp, req);
2960 }
2961}
2962
2963void
2964cancel_subs (aio_req_ornot req)
2965 CODE:
2966 req_cancel_subs (req);
2967
2968void
2969result (aio_req grp, ...)
2970 CODE:
2971{
2972 int i;
2973 AV *av;
2974
2975 grp->errorno = errno;
2976
2977 av = newAV ();
2978 av_extend (av, items - 1);
2979
2980 for (i = 1; i < items; ++i )
2981 av_push (av, newSVsv (ST (i)));
2982
2983 SvREFCNT_dec (grp->sv1);
2984 grp->sv1 = (SV *)av;
2985}
2986
2987void
2988errno (aio_req grp, int errorno = errno)
2989 CODE:
2990 grp->errorno = errorno;
2991
2992void
2993limit (aio_req grp, int limit)
2994 CODE:
2995 eio_grp_limit (grp, limit);
2996
2997void
2998feed (aio_req grp, SV *callback = &PL_sv_undef)
2999 CODE:
3000{
3001 SvREFCNT_dec (grp->sv2);
3002 grp->sv2 = newSVsv (callback);
3003 grp->feed = aio_grp_feed;
3004
3005 if (grp->int2 <= 0)
3006 grp->int2 = 2;
3007
3008 eio_grp_limit (grp, grp->int2);
3009}
3010

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