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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.8 by root, Mon Jul 11 02:53:59 2005 UTC vs.
Revision 1.264 by root, Tue Aug 14 11:44:52 2018 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
12
13#include <stddef.h>
14#include <stdlib.h>
15#include <errno.h>
5#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
6#include <sys/stat.h> 18#include <sys/stat.h>
7#include <unistd.h> 19#include <limits.h>
8#include <fcntl.h> 20#include <fcntl.h>
9#include <signal.h>
10#include <sched.h> 21#include <sched.h>
11#include <endian.h>
12 22
13#include <pthread.h> 23#if HAVE_SYS_SYSMACROS_H
14#include <sys/syscall.h> 24# include <sys/sysmacros.h>
25#endif
15 26
16typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 27#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
17typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 28# include <sys/mman.h>
18typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 29#endif
19 30
20#if __ia64 31/* the incompetent fool that created musl keeps __linux__, refuses
21# define STACKSIZE 65536 32 * to implement any linux standard apis, and also has no way to test
33 * for his broken iplementation. don't complain to me if this fails
34 * for you.
35 */
36#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
37# include <linux/fs.h>
38# ifdef FS_IOC_FIEMAP
39# include <linux/types.h>
40# include <linux/fiemap.h>
41# define HAVE_FIEMAP 1
42# endif
43#endif
44
45/* perl namespace pollution */
46#undef VERSION
47
48/* perl stupidly overrides readdir and maybe others */
49/* with thread-unsafe versions, imagine that :( */
50#undef readdir
51#undef opendir
52#undef closedir
53
54#ifdef _WIN32
55
56 // perl overrides all those nice libc functions
57
58 #undef malloc
59 #undef free
60 #undef open
61 #undef read
62 #undef write
63 #undef send
64 #undef recv
65 #undef stat
66 #undef lstat
67 #undef fstat
68 #undef truncate
69 #undef ftruncate
70 #undef open
71 #undef link
72 #undef close
73 #undef unlink
74 #undef mkdir
75 #undef rmdir
76 #undef rename
77 #undef lseek
78 #undef opendir
79 #undef readdir
80 #undef closedir
81 #undef chmod
82 #undef fchmod
83 #undef dup
84 #undef dup2
85 #undef abort
86 #undef pipe
87
88 #define EIO_STRUCT_STAT struct _stati64
89 #define EIO_STRUCT_STATI64
90
22#else 91#else
23# define STACKSIZE 4096 92
93 #include <sys/time.h>
94 #include <sys/select.h>
95 #include <unistd.h>
96 #include <utime.h>
97 #include <signal.h>
98
99 #define EIO_STRUCT_STAT Stat_t
100
101#endif
102
103/*****************************************************************************/
104
105#if __GNUC__ >= 3
106# define expect(expr,value) __builtin_expect ((expr),(value))
107#else
108# define expect(expr,value) (expr)
109#endif
110
111#define expect_false(expr) expect ((expr) != 0, 0)
112#define expect_true(expr) expect ((expr) != 0, 1)
113
114/*****************************************************************************/
115
116#include "config.h"
117
118#if HAVE_ST_XTIMENSEC
119# define ATIMENSEC PL_statcache.st_atimensec
120# define MTIMENSEC PL_statcache.st_mtimensec
121# define CTIMENSEC PL_statcache.st_ctimensec
122#elif HAVE_ST_XTIMESPEC
123# define ATIMENSEC PL_statcache.st_atim.tv_nsec
124# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
125# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
126#else
127# define ATIMENSEC 0
128# define MTIMENSEC 0
129# define CTIMENSEC 0
130#endif
131
132#include "schmorp.h"
133
134#if HAVE_EVENTFD
135# include <sys/eventfd.h>
136#endif
137
138#if HAVE_TIMERFD
139# include <sys/timerfd.h>
140#endif
141
142#if HAVE_RLIMITS
143 #include <sys/time.h>
144 #include <sys/resource.h>
145#endif
146
147typedef SV SV8; /* byte-sv, used for argument-checking */
148typedef int aio_rfd; /* read file desriptor */
149typedef int aio_wfd; /* write file descriptor */
150
151static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
152
153#define EIO_REQ_MEMBERS \
154 SV *callback; \
155 SV *sv1, *sv2; \
156 SV *sv3, *sv4; \
157 STRLEN stroffset; \
158 SV *self;
159
160#define EIO_NO_WRAPPERS 1
161
162#include "libeio/eio.h"
163
164static int req_invoke (eio_req *req);
165#define EIO_FINISH(req) req_invoke (req)
166static void req_destroy (eio_req *grp);
167#define EIO_DESTROY(req) req_destroy (req)
168
169#include "libeio/eio.c"
170
171#if !HAVE_POSIX_FADVISE
172# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
173#endif
174
175#if !HAVE_POSIX_MADVISE
176# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
177#endif
178
179#ifndef MAP_ANONYMOUS
180# ifdef MAP_ANON
181# define MAP_ANONYMOUS MAP_ANON
182# else
183# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
24#endif 184# endif
185#endif
25 186
26enum { 187#ifndef makedev
27 REQ_QUIT, 188# define makedev(maj,min) (((maj) << 8) | (min))
28 REQ_OPEN, REQ_CLOSE, 189#endif
29 REQ_READ, REQ_WRITE, REQ_READAHEAD, 190#ifndef major
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 191# define major(dev) ((dev) >> 8)
31 REQ_FSYNC, REQ_FDATASYNC, 192#endif
193#ifndef minor
194# define minor(dev) ((dev) & 0xff)
195#endif
196
197#if PAGESIZE <= 0
198# define PAGESIZE sysconf (_SC_PAGESIZE)
199#endif
200
201/*****************************************************************************/
202
203#if !_POSIX_MAPPED_FILES
204# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
205# define munmap(addr,length) EIO_ENOSYS ()
206#endif
207
208#if !_POSIX_MEMORY_PROTECTION
209# define mprotect(addr,len,prot) EIO_ENOSYS ()
210#endif
211
212#if !MREMAP_MAYMOVE
213# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
214#endif
215
216#define FOREIGN_MAGIC PERL_MAGIC_ext
217
218static int ecb_cold
219mmap_free (pTHX_ SV *sv, MAGIC *mg)
220{
221 int old_errno = errno;
222 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
223 errno = old_errno;
224
225 mg->mg_obj = 0; /* just in case */
226
227 SvREADONLY_off (sv);
228
229 if (SvPVX (sv) != mg->mg_ptr)
230 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
231
232 SvCUR_set (sv, 0);
233 SvPVX (sv) = 0;
234 SvOK_off (sv);
235
236 return 0;
237}
238
239static MGVTBL mmap_vtbl = {
240 0, 0, 0, 0, mmap_free
32}; 241};
33 242
34typedef struct aio_cb { 243static int ecb_cold
35 struct aio_cb *volatile next; 244sysfree_free (pTHX_ SV *sv, MAGIC *mg)
245{
246 free (mg->mg_ptr);
247 mg->mg_obj = 0; /* just in case */
36 248
37 int type; 249 SvREADONLY_off (sv);
38 250
39 int fd; 251 if (SvPVX (sv) != mg->mg_ptr)
40 off_t offset; 252 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
41 size_t length;
42 ssize_t result;
43 mode_t mode; /* open */
44 int errorno;
45 SV *data, *callback;
46 void *dataptr;
47 STRLEN dataoffset;
48 253
49 Stat_t *statdata; 254 SvCUR_set (sv, 0);
50} aio_cb; 255 SvPVX (sv) = 0;
256 SvOK_off (sv);
51 257
52typedef aio_cb *aio_req; 258 return 0;
259}
53 260
54static int started; 261static MGVTBL sysfree_vtbl = {
55static int nreqs; 262 0, 0, 0, 0, sysfree_free
56static int max_outstanding = 1<<30; 263};
57static int respipe [2];
58 264
59static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 265/*****************************************************************************/
60static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62 266
63static volatile aio_req reqs, reqe; /* queue start, queue end */ 267/* helper: set scalar to foreign ptr with custom free */
64static volatile aio_req ress, rese; /* queue start, queue end */
65
66static void 268static void
67poll_wait () 269sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
68{ 270{
69 if (!nreqs) 271 sv_force_normal (sv);
272
273 /* we store the length in mg_obj, as namlen is I32 :/ */
274 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
275 ->mg_obj = (SV *)length;
276
277 SvUPGRADE (sv, SVt_PV); /* nop... */
278
279 if (SvLEN (sv))
280 Safefree (SvPVX (sv));
281
282 SvPVX (sv) = (char *)addr;
283 SvCUR_set (sv, length);
284 SvLEN_set (sv, 0);
285 SvPOK_only (sv);
286}
287
288static void
289sv_clear_foreign (SV *sv)
290{
291 /* todo: iterate over magic and only free ours, but of course */
292 /* the perl5porters will call that (correct) behaviour buggy */
293 sv_unmagic (sv, FOREIGN_MAGIC);
294}
295
296/*****************************************************************************/
297
298/* defines all sorts of constants to 0 unless they are already defined */
299/* also provides const_iv_ and const_niv_ macros for them */
300#include "def0.h"
301
302/*****************************************************************************/
303
304static void
305fiemap (eio_req *req)
306{
307 req->result = -1;
308
309#if HAVE_FIEMAP
310 /* assume some c99 */
311 struct fiemap *fiemap = 0;
312 size_t end_offset;
313 int count = req->int3;
314
315 req->flags |= EIO_FLAG_PTR1_FREE;
316
317 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
318 /* increase in 3.5kb steps */
319 if (count < 0)
320 count = 8;
321
322 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
323 errno = ENOMEM;
324 if (!fiemap)
70 return; 325 return;
71 326
72 fd_set rfd; 327 req->ptr1 = fiemap;
73 FD_ZERO(&rfd);
74 FD_SET(respipe [0], &rfd);
75 328
76 select (respipe [0] + 1, &rfd, 0, 0, 0); 329 fiemap->fm_start = req->offs;
77} 330 fiemap->fm_length = req->size;
331 fiemap->fm_flags = req->int2;
332 fiemap->fm_extent_count = count;
78 333
79static int 334 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
80poll_cb () 335 return;
81{ 336
82 dSP; 337 if (req->int3 >= 0 /* not autosizing */
83 int count = 0; 338 || !fiemap->fm_mapped_extents /* no more extents */
84 aio_req req; 339 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
85 340 goto done;
86 { 341
87 /* read and signals sent by the worker threads */ 342 /* else we have to loop -
88 char buf [32]; 343 * it would be tempting (actually I tried that first) to just query the
89 while (read (respipe [0], buf, 32) > 0) 344 * number of extents needed, but linux often feels like not returning all
90 ; 345 * extents, without telling us it left any out. this complicates
91 } 346 * this quite a bit.
347 */
348
349 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
92 350
93 for (;;) 351 for (;;)
94 { 352 {
95 pthread_mutex_lock (&reslock); 353 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
354 char scratch[3072];
355 struct fiemap *incmap = (struct fiemap *)scratch;
96 356
97 req = ress; 357 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
358 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
359 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
360 incmap->fm_flags = fiemap->fm_flags;
361 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
98 362
99 if (ress) 363 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
364 return;
365
366 if (!incmap->fm_mapped_extents)
367 goto done;
368
369 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
370 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
371 errno = ENOMEM;
372 if (!fiemap)
373 return;
374
375 req->ptr1 = fiemap;
376
377 for (count = 0; count < incmap->fm_mapped_extents; ++count)
100 { 378 {
101 ress = ress->next; 379 struct fiemap_extent *e = incmap->fm_extents + count;
102 if (!ress) rese = 0; 380
381 if (e->fe_logical + e->fe_length >= end_offset)
382 goto done;
383
384 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
385
386 if (e->fe_flags & FIEMAP_EXTENT_LAST)
387 goto done;
388
103 } 389 }
390 }
104 391
105 pthread_mutex_unlock (&reslock); 392done:
393 req->result = 0;
106 394
107 if (!req) 395#else
108 break; 396 errno = ENOSYS;
397#endif
398}
109 399
110 nreqs--; 400/*****************************************************************************/
111 401
112 if (req->type == REQ_QUIT) 402enum {
113 started--; 403 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
114 else 404};
405
406typedef eio_req *aio_req;
407typedef eio_req *aio_req_ornot;
408typedef eio_wd aio_wd;
409
410static SV *on_next_submit;
411static int next_pri = EIO_PRI_DEFAULT;
412static int max_outstanding;
413
414static s_epipe respipe;
415
416static void req_destroy (aio_req req);
417static void req_cancel (aio_req req);
418
419static void
420want_poll (void)
421{
422 /* write a dummy byte to the pipe so fh becomes ready */
423 s_epipe_signal (&respipe);
424}
425
426static void
427done_poll (void)
428{
429 /* read any signals sent by the worker threads */
430 s_epipe_drain (&respipe);
431}
432
433/* must be called at most once */
434static SV *
435req_sv (aio_req req, HV *stash)
436{
437 if (!req->self)
438 {
439 req->self = (SV *)newHV ();
440 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
441 }
442
443 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
444}
445
446static SV *
447newSVaio_wd (aio_wd wd)
448{
449 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
450}
451
452static aio_req
453SvAIO_REQ (SV *sv)
454{
455 MAGIC *mg;
456
457 if (!SvROK (sv)
458 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
459 || (SvSTASH (SvRV (sv)) != aio_grp_stash
460 && SvSTASH (SvRV (sv)) != aio_req_stash
461 && !sv_derived_from (sv, "IO::AIO::REQ")))
462 croak ("object of class IO::AIO::REQ expected");
463
464 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
465
466 return mg ? (aio_req)mg->mg_ptr : 0;
467}
468
469static aio_wd
470SvAIO_WD (SV *sv)
471{
472 if (!SvROK (sv)
473 || SvTYPE (SvRV (sv)) != SVt_PVMG
474 || SvSTASH (SvRV (sv)) != aio_wd_stash)
475 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
476
477 return (aio_wd)(long)SvIVX (SvRV (sv));
478}
479
480static SV *
481newmortalFH (int fd, int flags)
482{
483 if (fd < 0)
484 return &PL_sv_undef;
485
486 GV *gv = (GV *)sv_newmortal ();
487 char sym[64];
488 int symlen;
489
490 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
491 gv_init (gv, aio_stash, sym, symlen, 0);
492
493 symlen = snprintf (
494 sym,
495 sizeof (sym),
496 "%s&=%d",
497 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
498 fd
499 );
500
501 return do_open (gv, sym, symlen, 0, 0, 0, 0)
502 ? (SV *)gv : &PL_sv_undef;
503}
504
505static void
506aio_grp_feed (aio_req grp)
507{
508 if (grp->sv2 && SvOK (grp->sv2))
509 {
510 dSP;
511
512 ENTER;
513 SAVETMPS;
514 PUSHMARK (SP);
515 XPUSHs (req_sv (grp, aio_grp_stash));
516 PUTBACK;
517 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
518 SPAGAIN;
519 FREETMPS;
520 LEAVE;
521 }
522}
523
524static void
525req_submit (eio_req *req)
526{
527 eio_submit (req);
528
529 if (expect_false (on_next_submit))
530 {
531 dSP;
532 SV *cb = sv_2mortal (on_next_submit);
533
534 on_next_submit = 0;
535
536 PUSHMARK (SP);
537 PUTBACK;
538 call_sv (cb, G_DISCARD | G_EVAL);
539 }
540}
541
542static int
543req_invoke (eio_req *req)
544{
545 if (req->flags & FLAG_SV2_RO_OFF)
546 SvREADONLY_off (req->sv2);
547
548 if (!EIO_CANCELLED (req) && req->callback)
549 {
550 dSP;
551 static SV *sv_result_cache; /* caches the result integer SV */
552 SV *sv_result;
553
554 ENTER;
555 SAVETMPS;
556 PUSHMARK (SP);
557 EXTEND (SP, 1);
558
559 /* do not recreate the result IV from scratch each time */
560 if (expect_true (sv_result_cache))
115 { 561 {
116 int errorno = errno; 562 sv_result = sv_result_cache; sv_result_cache = 0;
117 errno = req->errorno; 563 SvIV_set (sv_result, req->result);
118 564 SvIOK_only (sv_result);
119 if (req->type == REQ_READ)
120 SvCUR_set (req->data, req->dataoffset
121 + req->result > 0 ? req->result : 0);
122
123 if (req->data)
124 SvREFCNT_dec (req->data);
125
126 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127 {
128 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129 PL_laststatval = req->result;
130 PL_statcache = *(req->statdata);
131
132 Safefree (req->statdata);
133 }
134
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = POPs;
148
149 PUSHMARK (SP);
150 XPUSHs (fh);
151 }
152
153 if (SvOK (req->callback))
154 {
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158 }
159
160 if (req->callback)
161 SvREFCNT_dec (req->callback);
162
163 errno = errorno;
164 count++;
165 }
166
167 Safefree (req);
168 }
169
170 return count;
171}
172
173static void *aio_proc(void *arg);
174
175static void
176start_thread (void)
177{
178 sigset_t fullsigset, oldsigset;
179 pthread_t tid;
180 pthread_attr_t attr;
181
182 pthread_attr_init (&attr);
183 pthread_attr_setstacksize (&attr, STACKSIZE);
184 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
185
186 sigfillset (&fullsigset);
187 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
188
189 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
190 started++;
191
192 sigprocmask (SIG_SETMASK, &oldsigset, 0);
193}
194
195static void
196send_req (aio_req req)
197{
198 nreqs++;
199
200 pthread_mutex_lock (&reqlock);
201
202 req->next = 0;
203
204 if (reqe)
205 {
206 reqe->next = req;
207 reqe = req;
208 }
209 else
210 reqe = reqs = req;
211
212 pthread_cond_signal (&reqwait);
213 pthread_mutex_unlock (&reqlock);
214
215 while (nreqs > max_outstanding)
216 {
217 poll_wait ();
218 poll_cb ();
219 }
220}
221
222static void
223end_thread (void)
224{
225 aio_req req;
226 New (0, req, 1, aio_cb);
227 req->type = REQ_QUIT;
228
229 send_req (req);
230}
231
232static void
233read_write (int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239
240 SvUPGRADE (data, SVt_PV);
241 SvPOK_on (data);
242
243 if (dataoffset < 0)
244 dataoffset += svlen;
245
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 {
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260
261 if (length < 0)
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278}
279
280static void *
281aio_proc (void *thr_arg)
282{
283 aio_req req;
284 int type;
285
286 do
287 {
288 pthread_mutex_lock (&reqlock);
289
290 for (;;)
291 {
292 req = reqs;
293
294 if (reqs)
295 {
296 reqs = reqs->next;
297 if (!reqs) reqe = 0;
298 }
299
300 if (req)
301 break;
302
303 pthread_cond_wait (&reqwait, &reqlock);
304 }
305
306 pthread_mutex_unlock (&reqlock);
307
308 errno = 0; /* strictly unnecessary */
309
310 type = req->type;
311
312 switch (type)
313 {
314 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
315 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif
321
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
329
330 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332
333 case REQ_QUIT:
334 break;
335
336 default:
337 req->result = ENOSYS;
338 break;
339 }
340
341 req->errorno = errno;
342
343 pthread_mutex_lock (&reslock);
344
345 req->next = 0;
346
347 if (rese)
348 {
349 rese->next = req;
350 rese = req;
351 } 565 }
352 else 566 else
353 { 567 {
354 rese = ress = req; 568 sv_result = newSViv (req->result);
355 569 SvREADONLY_on (sv_result);
356 /* write a dummy byte to the pipe so fh becomes ready */
357 write (respipe [1], &respipe, 1);
358 } 570 }
359 571
360 pthread_mutex_unlock (&reslock); 572 switch (req->type)
573 {
574 case EIO_WD_OPEN:
575 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
576 break;
577
578 case EIO_READDIR:
579 {
580 SV *rv = &PL_sv_undef;
581
582 if (req->result >= 0)
583 {
584 int i;
585 char *names = (char *)req->ptr2;
586 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
587 AV *av = newAV ();
588
589 av_extend (av, req->result - 1);
590
591 for (i = 0; i < req->result; ++i)
592 {
593 if (req->int1 & EIO_READDIR_DENTS)
594 {
595 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
596
597 if (req->int1 & EIO_READDIR_CUSTOM2)
598 {
599 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
600 AV *avent = newAV ();
601
602 av_extend (avent, 2);
603
604 if (!sv_type [ent->type])
605 {
606 sv_type [ent->type] = newSViv (ent->type);
607 SvREADONLY_on (sv_type [ent->type]);
608 }
609
610 av_store (avent, 0, namesv);
611 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
612 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
613
614 av_store (av, i, newRV_noinc ((SV *)avent));
615 }
616 else
617 av_store (av, i, namesv);
618
619 ++ent;
620 }
621 else
622 {
623 SV *name = newSVpv (names, 0);
624 av_store (av, i, name);
625 names += SvCUR (name) + 1;
626 }
627 }
628
629 rv = sv_2mortal (newRV_noinc ((SV *)av));
630 }
631
632 PUSHs (rv);
633
634 if (req->int1 & EIO_READDIR_CUSTOM1)
635 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
636 }
637 break;
638
639 case EIO_OPEN:
640 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
641 break;
642
643 case EIO_STATVFS:
644 case EIO_FSTATVFS:
645 {
646 SV *rv = &PL_sv_undef;
647
648#ifndef _WIN32
649 if (req->result >= 0)
650 {
651 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
652 HV *hv = newHV ();
653 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
654 * chooses to make it a struct.
655 */
656 unsigned long fsid = 0;
657 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
658
659 rv = sv_2mortal (newRV_noinc ((SV *)hv));
660
661 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
662 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
663 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
664 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
665 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
666 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
667 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
668 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
669 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
670 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
671 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
672 }
673#endif
674
675 PUSHs (rv);
676 }
677
678 break;
679
680 case EIO_GROUP:
681 req->int1 = 2; /* mark group as finished */
682
683 if (req->sv1)
684 {
685 int i;
686 AV *av = (AV *)req->sv1;
687
688 EXTEND (SP, AvFILL (av) + 1);
689 for (i = 0; i <= AvFILL (av); ++i)
690 PUSHs (*av_fetch (av, i, 0));
691 }
692 break;
693
694 case EIO_NOP:
695 case EIO_BUSY:
696 break;
697
698 case EIO_READLINK:
699 case EIO_REALPATH:
700 if (req->result > 0)
701 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
702 break;
703
704 case EIO_STAT:
705 case EIO_LSTAT:
706 case EIO_FSTAT:
707 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
708
709 if (!(PL_laststatval = req->result))
710 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
711 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
712
713 PUSHs (sv_result);
714 break;
715
716 case EIO_SEEK:
717 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
718 break;
719
720 case EIO_READ:
721 {
722 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
723 *SvEND (req->sv2) = 0;
724 SvPOK_only (req->sv2);
725 SvSETMAGIC (req->sv2);
726 PUSHs (sv_result);
727 }
728 break;
729
730 case EIO_SLURP:
731 {
732 if (req->result >= 0)
733 {
734 /* if length was originally not known, we steal the malloc'ed memory */
735 if (req->flags & EIO_FLAG_PTR2_FREE)
736 {
737 req->flags &= ~EIO_FLAG_PTR2_FREE;
738 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
739 }
740 else
741 {
742 SvCUR_set (req->sv2, req->result);
743 *SvEND (req->sv2) = 0;
744 SvPOK_only (req->sv2);
745 }
746
747 SvSETMAGIC (req->sv2);
748 }
749
750 PUSHs (sv_result);
751 }
752 break;
753
754 case EIO_CUSTOM:
755 if (req->feed == fiemap)
756 {
757#if HAVE_FIEMAP
758 if (!req->result)
759 {
760 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
761
762 if (fiemap->fm_extent_count)
763 {
764 AV *av = newAV ();
765 int i;
766
767 while (fiemap->fm_mapped_extents)
768 {
769 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
770 AV *ext_av = newAV ();
771
772 av_store (ext_av, 3, newSVuv (extent->fe_flags));
773 av_store (ext_av, 2, newSVval64 (extent->fe_length));
774 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
775 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
776
777 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
778 }
779
780 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
781 }
782 else
783 {
784 SvIV_set (sv_result, fiemap->fm_mapped_extents);
785 PUSHs (sv_result);
786 }
787 }
788#endif
789 }
790 else
791 PUSHs (sv_result);
792 break;
793
794 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
795 if (req->result > 0)
796 SvIV_set (sv_result, 0);
797 /* FALLTHROUGH */
798
799 default:
800 PUSHs (sv_result);
801 break;
802 }
803
804 errno = req->errorno;
805
806 PUTBACK;
807 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
808 SPAGAIN;
809
810 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
811 SvREFCNT_dec (sv_result);
812 else
813 sv_result_cache = sv_result;
814
815 FREETMPS;
816 LEAVE;
817
818 PUTBACK;
361 } 819 }
362 while (type != REQ_QUIT);
363 820
821 return !!SvTRUE (ERRSV);
822}
823
824static void
825req_destroy (aio_req req)
826{
827 if (req->self)
828 {
829 sv_unmagic (req->self, PERL_MAGIC_ext);
830 SvREFCNT_dec (req->self);
831 }
832
833 SvREFCNT_dec (req->sv1);
834 SvREFCNT_dec (req->sv2);
835 SvREFCNT_dec (req->sv3);
836 SvREFCNT_dec (req->sv4);
837 SvREFCNT_dec (req->callback);
838
839 free (req);
840}
841
842static void
843req_cancel_subs (aio_req grp)
844{
845 if (grp->type != EIO_GROUP)
846 return;
847
848 SvREFCNT_dec (grp->sv2);
849 grp->sv2 = 0;
850
851 eio_grp_cancel (grp);
852}
853
854static void ecb_cold
855create_respipe (void)
856{
857 if (s_epipe_renew (&respipe))
858 croak ("IO::AIO: unable to initialize result pipe");
859}
860
861static void
862poll_wait (void)
863{
864 while (eio_nreqs ())
865 {
866 int size;
867
868 X_LOCK (EIO_POOL->reslock);
869 size = EIO_POOL->res_queue.size;
870 X_UNLOCK (EIO_POOL->reslock);
871
872 if (size)
873 return;
874
875 etp_maybe_start_thread (EIO_POOL);
876
877 s_epipe_wait (&respipe);
878 }
879}
880
881static int
882poll_cb (void)
883{
884 for (;;)
885 {
886 int res = eio_poll ();
887
888 if (res > 0)
889 croak (0);
890
891 if (!max_outstanding || max_outstanding > eio_nreqs ())
892 return res;
893
894 poll_wait ();
895 }
896}
897
898static void ecb_cold
899reinit (void)
900{
901 create_respipe ();
902
903 if (eio_init (want_poll, done_poll) < 0)
904 croak ("IO::AIO: unable to initialise eio library");
905}
906
907/*****************************************************************************/
908
909static SV *
910get_cb (SV *cb_sv)
911{
912 SvGETMAGIC (cb_sv);
913 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
914}
915
916static aio_req ecb_noinline
917dreq (SV *callback)
918{
919 SV *cb_cv;
920 aio_req req;
921 int req_pri = next_pri;
922 next_pri = EIO_PRI_DEFAULT;
923
924 cb_cv = get_cb (callback);
925
926 req = calloc (sizeof (*req), 1);
927 if (!req)
928 croak ("out of memory during eio_req allocation");
929
930 req->callback = SvREFCNT_inc (cb_cv);
931 req->pri = req_pri;
932
364 return 0; 933 return req;
365} 934}
935
936#define dREQ \
937 aio_req req = dreq (callback); \
938
939#define REQ_SEND \
940 PUTBACK; \
941 req_submit (req); \
942 SPAGAIN; \
943 \
944 if (GIMME_V != G_VOID) \
945 XPUSHs (req_sv (req, aio_req_stash));
946
947ecb_inline void
948req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
949{
950 if (expect_false (SvROK (path)))
951 {
952 SV *rv = SvRV (path);
953 SV *wdob;
954
955 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
956 {
957 path = AvARRAY (rv)[1];
958 wdob = AvARRAY (rv)[0];
959
960 if (SvOK (wdob))
961 {
962 *wd = SvAIO_WD (wdob);
963 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
964 }
965 else
966 *wd = EIO_INVALID_WD;
967 }
968 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
969 {
970 *wd = (aio_wd)(long)SvIVX (rv);
971 *wdsv = SvREFCNT_inc_NN (rv);
972 *ptr = ".";
973 return; /* path set to "." */
974 }
975 else
976 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
977 }
978
979 *pathsv = newSVsv (path);
980 *ptr = SvPVbyte_nolen (*pathsv);
981}
982
983static void ecb_noinline
984req_set_path1 (aio_req req, SV *path)
985{
986 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
987}
988
989static void ecb_noinline
990req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
991{
992 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
993
994 switch (SvTYPE (rv))
995 {
996 case SVt_PVIO:
997 case SVt_PVLV:
998 case SVt_PVGV:
999 req->type = type_fh;
1000 req->sv1 = newSVsv (fh_or_path);
1001 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1002 break;
1003
1004 default:
1005 req->type = type_path;
1006 req_set_path1 (req, fh_or_path);
1007 break;
1008 }
1009}
1010
1011/*****************************************************************************/
1012
1013static void
1014ts_set (struct timespec *ts, NV value)
1015{
1016 ts->tv_sec = value;
1017 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
1018}
1019
1020static NV
1021ts_get (const struct timespec *ts)
1022{
1023 return ts->tv_sec + ts->tv_nsec * 1e-9;
1024}
1025
1026/*****************************************************************************/
1027
1028XS(boot_IO__AIO) ecb_cold;
366 1029
367MODULE = IO::AIO PACKAGE = IO::AIO 1030MODULE = IO::AIO PACKAGE = IO::AIO
368 1031
369PROTOTYPES: ENABLE 1032PROTOTYPES: ENABLE
370 1033
371BOOT: 1034BOOT:
372{ 1035{
373 if (pipe (respipe)) 1036 static const struct {
374 croak ("unable to initialize result pipe"); 1037 const char *name;
1038 IV iv;
1039 } *civ, const_iv[] = {
1040# define const_niv(name, value) { # name, (IV) value },
1041# define const_iv(name) { # name, (IV) name },
1042# define const_eio(name) { # name, (IV) EIO_ ## name },
375 1043
376 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 1044 /* you have to re-run ./gendef0 after adding/removing any constants here */
377 croak ("cannot set result pipe to nonblocking mode"); 1045 /* the first block can be undef if missing */
1046 const_iv (ENOSYS)
1047 const_iv (EXDEV)
1048 const_iv (EBADR)
378 1049
379 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 1050 /* for lseek */
380 croak ("cannot set result pipe to nonblocking mode"); 1051 const_iv (SEEK_DATA)
381} 1052 const_iv (SEEK_HOLE)
382 1053
1054 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1055 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1056 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1057 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1058 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1059 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1060
1061 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1062 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1063 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1064 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1065 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1066
1067 /* the second block will be 0 when missing */
1068 const_iv (O_ACCMODE)
1069
1070 const_iv (O_RDONLY)
1071 const_iv (O_WRONLY)
1072 const_iv (O_RDWR)
1073 const_iv (O_CREAT)
1074 const_iv (O_TRUNC)
1075 const_iv (O_EXCL)
1076 const_iv (O_APPEND)
1077
1078 const_iv (O_ASYNC)
1079 const_iv (O_DIRECT)
1080 const_iv (O_NOATIME)
1081
1082 const_iv (O_CLOEXEC)
1083 const_iv (O_NOCTTY)
1084 const_iv (O_NOFOLLOW)
1085 const_iv (O_NONBLOCK)
1086 const_iv (O_EXEC)
1087 const_iv (O_SEARCH)
1088 const_iv (O_DIRECTORY)
1089 const_iv (O_DSYNC)
1090 const_iv (O_RSYNC)
1091 const_iv (O_SYNC)
1092 const_iv (O_PATH)
1093 const_iv (O_TMPFILE)
1094 const_iv (O_TTY_INIT)
1095
1096 const_iv (S_IFIFO)
1097 const_iv (S_IFCHR)
1098 const_iv (S_IFBLK)
1099 const_iv (S_IFLNK)
1100 const_iv (S_IFREG)
1101 const_iv (S_IFDIR)
1102 const_iv (S_IFWHT)
1103 const_iv (S_IFSOCK)
1104 const_iv (S_IFMT)
1105
1106 const_iv (ST_RDONLY)
1107 const_iv (ST_NOSUID)
1108 const_iv (ST_NODEV)
1109 const_iv (ST_NOEXEC)
1110 const_iv (ST_SYNCHRONOUS)
1111 const_iv (ST_MANDLOCK)
1112 const_iv (ST_WRITE)
1113 const_iv (ST_APPEND)
1114 const_iv (ST_IMMUTABLE)
1115 const_iv (ST_NOATIME)
1116 const_iv (ST_NODIRATIME)
1117 const_iv (ST_RELATIME)
1118
1119 const_iv (PROT_NONE)
1120 const_iv (PROT_EXEC)
1121 const_iv (PROT_READ)
1122 const_iv (PROT_WRITE)
1123
1124 const_iv (MAP_PRIVATE)
1125 const_iv (MAP_SHARED)
1126 const_iv (MAP_FIXED)
1127 const_iv (MAP_ANONYMOUS)
1128
1129 /* linuxish */
1130 const_iv (MAP_LOCKED)
1131 const_iv (MAP_NORESERVE)
1132 const_iv (MAP_POPULATE)
1133 const_iv (MAP_NONBLOCK)
1134 const_iv (MAP_GROWSDOWN)
1135 const_iv (MAP_32BIT)
1136 const_iv (MAP_HUGETLB)
1137 const_iv (MAP_STACK)
1138
1139 const_iv (MREMAP_MAYMOVE)
1140 const_iv (MREMAP_FIXED)
1141
1142 const_iv (F_DUPFD_CLOEXEC)
1143
1144 const_iv (MSG_CMSG_CLOEXEC)
1145 const_iv (SOCK_CLOEXEC)
1146
1147 const_iv (F_OFD_GETLK)
1148 const_iv (F_OFD_SETLK)
1149 const_iv (F_OFD_GETLKW)
1150
1151 const_iv (FIFREEZE)
1152 const_iv (FITHAW)
1153 const_iv (FITRIM)
1154 const_iv (FICLONE)
1155 const_iv (FICLONERANGE)
1156 const_iv (FIDEDUPERANGE)
1157
1158 const_iv (FS_IOC_GETFLAGS)
1159 const_iv (FS_IOC_SETFLAGS)
1160 const_iv (FS_IOC_GETVERSION)
1161 const_iv (FS_IOC_SETVERSION)
1162 const_iv (FS_IOC_FIEMAP)
1163 const_iv (FS_IOC_FSGETXATTR)
1164 const_iv (FS_IOC_FSSETXATTR)
1165 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1166 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1167 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1168
1169 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1170
1171 const_iv (FS_SECRM_FL)
1172 const_iv (FS_UNRM_FL)
1173 const_iv (FS_COMPR_FL)
1174 const_iv (FS_SYNC_FL)
1175 const_iv (FS_IMMUTABLE_FL)
1176 const_iv (FS_APPEND_FL)
1177 const_iv (FS_NODUMP_FL)
1178 const_iv (FS_NOATIME_FL)
1179 const_iv (FS_DIRTY_FL)
1180 const_iv (FS_COMPRBLK_FL)
1181 const_iv (FS_NOCOMP_FL)
1182 const_iv (FS_ENCRYPT_FL)
1183 const_iv (FS_BTREE_FL)
1184 const_iv (FS_INDEX_FL)
1185 const_iv (FS_JOURNAL_DATA_FL)
1186 const_iv (FS_NOTAIL_FL)
1187 const_iv (FS_DIRSYNC_FL)
1188 const_iv (FS_TOPDIR_FL)
1189 const_iv (FS_FL_USER_MODIFIABLE)
1190
1191 const_iv (FS_XFLAG_REALTIME)
1192 const_iv (FS_XFLAG_PREALLOC)
1193 const_iv (FS_XFLAG_IMMUTABLE)
1194 const_iv (FS_XFLAG_APPEND)
1195 const_iv (FS_XFLAG_SYNC)
1196 const_iv (FS_XFLAG_NOATIME)
1197 const_iv (FS_XFLAG_NODUMP)
1198 const_iv (FS_XFLAG_RTINHERIT)
1199 const_iv (FS_XFLAG_PROJINHERIT)
1200 const_iv (FS_XFLAG_NOSYMLINKS)
1201 const_iv (FS_XFLAG_EXTSIZE)
1202 const_iv (FS_XFLAG_EXTSZINHERIT)
1203 const_iv (FS_XFLAG_NODEFRAG)
1204 const_iv (FS_XFLAG_FILESTREAM)
1205 const_iv (FS_XFLAG_DAX)
1206 const_iv (FS_XFLAG_HASATTR)
1207
1208 const_iv (FIEMAP_FLAG_SYNC)
1209 const_iv (FIEMAP_FLAG_XATTR)
1210 const_iv (FIEMAP_FLAGS_COMPAT)
1211 const_iv (FIEMAP_EXTENT_LAST)
1212 const_iv (FIEMAP_EXTENT_UNKNOWN)
1213 const_iv (FIEMAP_EXTENT_DELALLOC)
1214 const_iv (FIEMAP_EXTENT_ENCODED)
1215 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1216 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1217 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1218 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1219 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1220 const_iv (FIEMAP_EXTENT_MERGED)
1221 const_iv (FIEMAP_EXTENT_SHARED)
1222
1223 const_iv (SPLICE_F_MOVE)
1224 const_iv (SPLICE_F_NONBLOCK)
1225 const_iv (SPLICE_F_MORE)
1226 const_iv (SPLICE_F_GIFT)
1227
1228 const_iv (EFD_CLOEXEC)
1229 const_iv (EFD_NONBLOCK)
1230 const_iv (EFD_SEMAPHORE)
1231
1232 const_iv (CLOCK_REALTIME)
1233 const_iv (CLOCK_MONOTONIC)
1234 const_iv (CLOCK_BOOTTIME)
1235 const_iv (CLOCK_REALTIME_ALARM)
1236 const_iv (CLOCK_BOOTTIME_ALARM)
1237
1238 const_iv (TFD_NONBLOCK)
1239 const_iv (TFD_CLOEXEC)
1240
1241 const_iv (TFD_TIMER_ABSTIME)
1242 const_iv (TFD_TIMER_CANCEL_ON_SET)
1243
1244 /* these are libeio constants, and are independent of gendef0 */
1245 const_eio (SEEK_SET)
1246 const_eio (SEEK_CUR)
1247 const_eio (SEEK_END)
1248
1249 const_eio (MCL_FUTURE)
1250 const_eio (MCL_CURRENT)
1251
1252 const_eio (MS_ASYNC)
1253 const_eio (MS_INVALIDATE)
1254 const_eio (MS_SYNC)
1255
1256 const_eio (MT_MODIFY)
1257
1258 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1259 const_eio (SYNC_FILE_RANGE_WRITE)
1260 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1261
1262 const_eio (FALLOC_FL_KEEP_SIZE)
1263 const_eio (FALLOC_FL_PUNCH_HOLE)
1264 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1265 const_eio (FALLOC_FL_ZERO_RANGE)
1266 const_eio (FALLOC_FL_INSERT_RANGE)
1267 const_eio (FALLOC_FL_UNSHARE_RANGE)
1268
1269 const_eio (RENAME_NOREPLACE)
1270 const_eio (RENAME_EXCHANGE)
1271 const_eio (RENAME_WHITEOUT)
1272
1273 const_eio (READDIR_DENTS)
1274 const_eio (READDIR_DIRS_FIRST)
1275 const_eio (READDIR_STAT_ORDER)
1276 const_eio (READDIR_FOUND_UNKNOWN)
1277
1278 const_eio (DT_UNKNOWN)
1279 const_eio (DT_FIFO)
1280 const_eio (DT_CHR)
1281 const_eio (DT_DIR)
1282 const_eio (DT_BLK)
1283 const_eio (DT_REG)
1284 const_eio (DT_LNK)
1285 const_eio (DT_SOCK)
1286 const_eio (DT_WHT)
1287 };
1288
1289 aio_stash = gv_stashpv ("IO::AIO" , 1);
1290 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1291 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1292 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1293
1294 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1295 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1296
1297 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1298
1299 reinit ();
1300}
1301
383void 1302void
384min_parallel(nthreads) 1303reinit ()
385 int nthreads 1304 PROTOTYPE:
1305
1306void
1307max_poll_reqs (unsigned int nreqs)
386 PROTOTYPE: $ 1308 PROTOTYPE: $
387 CODE: 1309 CODE:
388 while (nthreads > started) 1310 eio_set_max_poll_reqs (nreqs);
389 start_thread ();
390 1311
391void 1312void
392max_parallel(nthreads) 1313max_poll_time (double nseconds)
393 int nthreads
394 PROTOTYPE: $ 1314 PROTOTYPE: $
395 CODE: 1315 CODE:
1316 eio_set_max_poll_time (nseconds);
1317
1318void
1319min_parallel (unsigned int nthreads)
1320 PROTOTYPE: $
1321 CODE:
1322 eio_set_min_parallel (nthreads);
1323
1324void
1325max_parallel (unsigned int nthreads)
1326 PROTOTYPE: $
1327 CODE:
1328 eio_set_max_parallel (nthreads);
1329
1330void
1331max_idle (unsigned int nthreads)
1332 PROTOTYPE: $
1333 CODE:
1334 eio_set_max_idle (nthreads);
1335
1336void
1337idle_timeout (unsigned int seconds)
1338 PROTOTYPE: $
1339 CODE:
1340 eio_set_idle_timeout (seconds);
1341
1342void
1343max_outstanding (unsigned int maxreqs)
1344 PROTOTYPE: $
1345 CODE:
1346 max_outstanding = maxreqs;
1347
1348void
1349aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1350 PPCODE:
396{ 1351{
397 int cur = started; 1352 dREQ;
398 while (cur > nthreads) 1353
399 { 1354 req->type = EIO_WD_OPEN;
400 end_thread (); 1355 req_set_path1 (req, pathname);
1356
1357 REQ_SEND;
1358}
1359
1360void
1361aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1362 PPCODE:
1363{
1364 dREQ;
1365
1366 req->type = EIO_OPEN;
1367 req_set_path1 (req, pathname);
1368 req->int1 = flags;
1369 req->int2 = mode;
1370
1371 REQ_SEND;
1372}
1373
1374void
1375aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1376 ALIAS:
1377 aio_fsync = EIO_FSYNC
1378 aio_fdatasync = EIO_FDATASYNC
1379 aio_syncfs = EIO_SYNCFS
1380 PPCODE:
1381{
1382 int fd = s_fileno_croak (fh, 0);
1383 dREQ;
1384
1385 req->type = ix;
1386 req->sv1 = newSVsv (fh);
1387 req->int1 = fd;
1388
1389 REQ_SEND;
1390}
1391
1392void
1393aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1394 PPCODE:
1395{
1396 int fd = s_fileno_croak (fh, 0);
1397 dREQ;
1398
1399 req->type = EIO_SYNC_FILE_RANGE;
1400 req->sv1 = newSVsv (fh);
1401 req->int1 = fd;
1402 req->offs = offset;
1403 req->size = nbytes;
1404 req->int2 = flags;
1405
1406 REQ_SEND;
1407}
1408
1409void
1410aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1411 PPCODE:
1412{
1413 int fd = s_fileno_croak (fh, 0);
1414 dREQ;
1415
1416 req->type = EIO_FALLOCATE;
1417 req->sv1 = newSVsv (fh);
1418 req->int1 = fd;
1419 req->int2 = mode;
1420 req->offs = offset;
1421 req->size = len;
1422
1423 REQ_SEND;
1424}
1425
1426void
1427aio_close (SV *fh, SV *callback = &PL_sv_undef)
1428 PPCODE:
1429{
1430 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1431 int fd = s_fileno_croak (fh, 0);
1432 dREQ;
1433
1434 if (expect_false (close_fd < 0))
1435 {
1436 int pipefd [2];
1437
1438 if (
1439#ifdef _WIN32
1440 _pipe (pipefd, 1, _O_BINARY) < 0
1441#else
1442 pipe (pipefd) < 0
1443 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1444#endif
1445 || close (pipefd [1]) < 0
401 cur--; 1446 )
1447 abort (); /*D*/
1448
1449 close_fd = pipefd [0];
402 } 1450 }
403 1451
404 while (started > nthreads) 1452 req->type = EIO_DUP2;
1453 req->int1 = close_fd;
1454 req->sv2 = newSVsv (fh);
1455 req->int2 = fd;
1456
1457 REQ_SEND;
1458}
1459
1460void
1461aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1462 PPCODE:
1463{
1464 int fd = s_fileno_croak (fh, 0);
1465 dREQ;
1466
1467 req->type = EIO_SEEK;
1468 req->sv1 = newSVsv (fh);
1469 req->int1 = fd;
1470 req->offs = SvVAL64 (offset);
1471 req->int2 = whence;
1472
1473 REQ_SEND;
1474}
1475
1476void
1477aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1478 ALIAS:
1479 aio_read = EIO_READ
1480 aio_write = EIO_WRITE
1481 PPCODE:
1482{
1483 STRLEN svlen;
1484 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1485 char *svptr = SvPVbyte (data, svlen);
1486 UV len = SvUV (length);
1487
1488 if (dataoffset < 0)
1489 dataoffset += svlen;
1490
1491 if (dataoffset < 0 || dataoffset > svlen)
1492 croak ("dataoffset outside of data scalar");
1493
1494 if (ix == EIO_WRITE)
1495 {
1496 /* write: check length and adjust. */
1497 if (!SvOK (length) || len + dataoffset > svlen)
1498 len = svlen - dataoffset;
1499 }
1500 else
1501 {
1502 /* read: check type and grow scalar as necessary */
1503 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1504 svptr = sv_grow (data, len + dataoffset + 1);
1505 else if (SvCUR (data) < len + dataoffset)
1506 croak ("length + dataoffset outside of scalar, and cannot grow");
1507 }
1508
1509 {
1510 dREQ;
1511
1512 req->type = ix;
1513 req->sv1 = newSVsv (fh);
1514 req->int1 = fd;
1515 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1516 req->size = len;
1517 req->sv2 = SvREFCNT_inc (data);
1518 req->ptr2 = (char *)svptr + dataoffset;
1519 req->stroffset = dataoffset;
1520
1521 if (!SvREADONLY (data))
1522 {
1523 SvREADONLY_on (data);
1524 req->flags |= FLAG_SV2_RO_OFF;
1525 }
1526
1527 REQ_SEND;
1528 }
1529}
1530
1531void
1532aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1533 ALIAS:
1534 aio_ioctl = EIO_IOCTL
1535 aio_fcntl = EIO_FCNTL
1536 PPCODE:
1537{
1538 int fd = s_fileno_croak (fh, 0);
1539 char *svptr;
1540
1541 if (SvPOK (arg) || !SvNIOK (arg))
1542 {
1543 STRLEN svlen;
1544 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1545#ifdef IOCPARM_LEN
1546 STRLEN need = IOCPARM_LEN (request);
1547#else
1548 STRLEN need = 256;
1549#endif
1550
1551 if (svlen < need)
1552 svptr = SvGROW (arg, need);
1553 }
1554 else
1555 svptr = (char *)SvIV (arg);
1556
1557 {
1558 dREQ;
1559
1560 req->type = ix;
1561 req->sv1 = newSVsv (fh);
1562 req->int1 = fd;
1563 req->int2 = (long)request;
1564 req->sv2 = SvREFCNT_inc (arg);
1565 req->ptr2 = svptr;
1566
1567 REQ_SEND;
1568 }
1569}
1570
1571void
1572aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1573 ALIAS:
1574 aio_readlink = EIO_READLINK
1575 aio_realpath = EIO_REALPATH
1576 PPCODE:
1577{
1578 dREQ;
1579
1580 req->type = ix;
1581 req_set_path1 (req, pathname);
1582
1583 REQ_SEND;
1584}
1585
1586void
1587aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1588 PPCODE:
1589{
1590 int ifd = s_fileno_croak (in_fh , 0);
1591 int ofd = s_fileno_croak (out_fh, 1);
1592 dREQ;
1593
1594 req->type = EIO_SENDFILE;
1595 req->sv1 = newSVsv (out_fh);
1596 req->int1 = ofd;
1597 req->sv2 = newSVsv (in_fh);
1598 req->int2 = ifd;
1599 req->offs = in_offset;
1600 req->size = length;
1601
1602 REQ_SEND;
1603}
1604
1605void
1606aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1607 PPCODE:
1608{
1609 int fd = s_fileno_croak (fh, 0);
1610 dREQ;
1611
1612 req->type = EIO_READAHEAD;
1613 req->sv1 = newSVsv (fh);
1614 req->int1 = fd;
1615 req->offs = offset;
1616 req->size = length;
1617
1618 REQ_SEND;
1619}
1620
1621void
1622aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1623 ALIAS:
1624 aio_stat = EIO_STAT
1625 aio_lstat = EIO_LSTAT
1626 aio_statvfs = EIO_STATVFS
1627 PPCODE:
1628{
1629 dREQ;
1630
1631 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1632
1633 REQ_SEND;
1634}
1635
1636void
1637st_xtime ()
1638 ALIAS:
1639 st_atime = 1
1640 st_mtime = 2
1641 st_ctime = 4
1642 st_xtime = 7
1643 PPCODE:
1644 EXTEND (SP, 3);
1645 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1646 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1647 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1648
1649void
1650st_xtimensec ()
1651 ALIAS:
1652 st_atimensec = 1
1653 st_mtimensec = 2
1654 st_ctimensec = 4
1655 st_xtimensec = 7
1656 PPCODE:
1657 EXTEND (SP, 3);
1658 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1659 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1660 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1661
1662UV
1663major (UV dev)
1664 ALIAS:
1665 minor = 1
1666 CODE:
1667 RETVAL = ix ? minor (dev) : major (dev);
1668 OUTPUT:
1669 RETVAL
1670
1671UV
1672makedev (UV maj, UV min)
1673 CODE:
1674 RETVAL = makedev (maj, min);
1675 OUTPUT:
1676 RETVAL
1677
1678void
1679aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1680 PPCODE:
1681{
1682 dREQ;
1683
1684 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1685 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1686 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1687
1688 REQ_SEND;
1689}
1690
1691void
1692aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1693 PPCODE:
1694{
1695 dREQ;
1696
1697 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1698 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1699
1700 REQ_SEND;
1701}
1702
1703void
1704aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1705 PPCODE:
1706{
1707 dREQ;
1708
1709 req->int2 = mode;
1710 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1711
1712 REQ_SEND;
1713}
1714
1715void
1716aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1717 PPCODE:
1718{
1719 dREQ;
1720
1721 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1722 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1723 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1724
1725 REQ_SEND;
1726}
1727
1728void
1729aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1730 PPCODE:
1731{
1732 dREQ;
1733
1734 req->type = EIO_READDIR;
1735 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1736
1737 if (flags & EIO_READDIR_DENTS)
1738 req->int1 |= EIO_READDIR_CUSTOM2;
1739
1740 req_set_path1 (req, pathname);
1741
1742 REQ_SEND;
1743}
1744
1745void
1746aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1747 PPCODE:
1748{
1749 dREQ;
1750
1751 req->type = EIO_MKDIR;
1752 req->int2 = mode;
1753 req_set_path1 (req, pathname);
1754
1755 REQ_SEND;
1756}
1757
1758void
1759aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1760 ALIAS:
1761 aio_unlink = EIO_UNLINK
1762 aio_rmdir = EIO_RMDIR
1763 aio_readdir = EIO_READDIR
1764 PPCODE:
1765{
1766 dREQ;
1767
1768 req->type = ix;
1769 req_set_path1 (req, pathname);
1770
1771 REQ_SEND;
1772}
1773
1774void
1775aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1776 ALIAS:
1777 aio_link = EIO_LINK
1778 aio_symlink = EIO_SYMLINK
1779 aio_rename = EIO_RENAME
1780 PPCODE:
1781{
1782 eio_wd wd2 = 0;
1783 dREQ;
1784
1785 req->type = ix;
1786 req_set_path1 (req, oldpath);
1787 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1788 req->int3 = (long)wd2;
1789
1790 REQ_SEND;
1791}
1792
1793void
1794aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1795 PPCODE:
1796{
1797 eio_wd wd2 = 0;
1798 dREQ;
1799
1800 req->type = EIO_RENAME;
1801 req_set_path1 (req, oldpath);
1802 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1803 req->int2 = flags;
1804 req->int3 = (long)wd2;
1805
1806 REQ_SEND;
1807}
1808
1809void
1810aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1811 PPCODE:
1812{
1813 dREQ;
1814
1815 req->type = EIO_MKNOD;
1816 req->int2 = (mode_t)mode;
1817 req->offs = dev;
1818 req_set_path1 (req, pathname);
1819
1820 REQ_SEND;
1821}
1822
1823void
1824aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1825 ALIAS:
1826 aio_mtouch = EIO_MTOUCH
1827 aio_msync = EIO_MSYNC
1828 PPCODE:
1829{
1830 STRLEN svlen;
1831 char *svptr = SvPVbyte (data, svlen);
1832 UV len = SvUV (length);
1833
1834 if (flags < 0)
1835 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1836
1837 if (offset < 0)
1838 offset += svlen;
1839
1840 if (offset < 0 || offset > svlen)
1841 croak ("offset outside of scalar");
1842
1843 if (!SvOK (length) || len + offset > svlen)
1844 len = svlen - offset;
1845
1846 {
1847 dREQ;
1848
1849 req->type = ix;
1850 req->sv2 = SvREFCNT_inc (data);
1851 req->ptr2 = (char *)svptr + offset;
1852 req->size = len;
1853 req->int1 = flags;
1854
1855 REQ_SEND;
1856 }
1857}
1858
1859void
1860aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1861 PPCODE:
1862{
1863 STRLEN svlen;
1864 char *svptr = SvPVbyte (data, svlen);
1865 UV len = SvUV (length);
1866
1867 if (offset < 0)
1868 offset += svlen;
1869
1870 if (offset < 0 || offset > svlen)
1871 croak ("offset outside of scalar");
1872
1873 if (!SvOK (length) || len + offset > svlen)
1874 len = svlen - offset;
1875
1876 {
1877 dREQ;
1878
1879 req->type = EIO_MLOCK;
1880 req->sv2 = SvREFCNT_inc (data);
1881 req->ptr2 = (char *)svptr + offset;
1882 req->size = len;
1883
1884 REQ_SEND;
1885 }
1886}
1887
1888void
1889aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1890 PPCODE:
1891{
1892 dREQ;
1893
1894 req->type = EIO_MLOCKALL;
1895 req->int1 = flags;
1896
1897 REQ_SEND;
1898}
1899
1900void
1901aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1902 PPCODE:
1903{
1904 int fd = s_fileno_croak (fh, 0);
1905 dREQ;
1906
1907 req->type = EIO_CUSTOM;
1908 req->sv1 = newSVsv (fh);
1909 req->int1 = fd;
1910
1911 req->feed = fiemap;
1912#if HAVE_FIEMAP
1913 /* keep our fingers crossed that the next two types are 64 bit */
1914 req->offs = start;
1915 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1916 req->int2 = flags;
1917 req->int3 = SvOK (count) ? SvIV (count) : -1;
1918#endif
1919
1920 REQ_SEND;
1921}
1922
1923void
1924aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1925 PPCODE:
1926{
1927 char *svptr = 0;
1928
1929 sv_clear_foreign (data);
1930
1931 if (length) /* known length, directly read into scalar */
1932 {
1933 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1934 svptr = sv_grow (data, length + 1);
1935 else if (SvCUR (data) < length)
1936 croak ("length outside of scalar, and cannot grow");
1937 else
1938 svptr = SvPVbyte_nolen (data);
1939 }
1940
1941 {
1942 dREQ;
1943
1944 req->type = EIO_SLURP;
1945 req_set_path1 (req, pathname);
1946 req->offs = offset;
1947 req->size = length;
1948 req->sv2 = SvREFCNT_inc (data);
1949 req->ptr2 = svptr;
1950
1951 if (!SvREADONLY (data))
1952 {
1953 SvREADONLY_on (data);
1954 req->flags |= FLAG_SV2_RO_OFF;
1955 }
1956
1957 REQ_SEND;
1958 }
1959}
1960
1961void
1962aio_busy (double delay, SV *callback = &PL_sv_undef)
1963 PPCODE:
1964{
1965 dREQ;
1966
1967 req->type = EIO_BUSY;
1968 req->nv1 = delay < 0. ? 0. : delay;
1969
1970 REQ_SEND;
1971}
1972
1973void
1974aio_group (SV *callback = &PL_sv_undef)
1975 PPCODE:
1976{
1977 dREQ;
1978
1979 req->type = EIO_GROUP;
1980
1981 PUTBACK;
1982 req_submit (req);
1983 SPAGAIN;
1984
1985 XPUSHs (req_sv (req, aio_grp_stash));
1986}
1987
1988void
1989aio_nop (SV *callback = &PL_sv_undef)
1990 ALIAS:
1991 aio_nop = EIO_NOP
1992 aio_sync = EIO_SYNC
1993 PPCODE:
1994{
1995 dREQ;
1996
1997 req->type = ix;
1998
1999 REQ_SEND;
2000}
2001
2002int
2003aioreq_pri (int pri = NO_INIT)
2004 CODE:
2005 RETVAL = next_pri;
2006 if (items > 0)
2007 {
2008 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2009 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2010 next_pri = pri;
2011 }
2012 OUTPUT:
2013 RETVAL
2014
2015void
2016aioreq_nice (int nice = 0)
2017 CODE:
2018 nice = next_pri - nice;
2019 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2020 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2021 next_pri = nice;
2022
2023void
2024flush ()
2025 CODE:
2026 while (eio_nreqs ())
405 { 2027 {
406 poll_wait (); 2028 poll_wait ();
407 poll_cb (); 2029 poll_cb ();
408 } 2030 }
409}
410 2031
411int 2032int
412max_outstanding(nreqs) 2033poll ()
413 int nreqs
414 PROTOTYPE: $
415 CODE:
416 RETVAL = max_outstanding;
417 max_outstanding = nreqs;
418
419void
420aio_open(pathname,flags,mode,callback=&PL_sv_undef)
421 SV * pathname
422 int flags
423 int mode
424 SV * callback
425 PROTOTYPE: $$$;$
426 CODE: 2034 CODE:
427{
428 aio_req req;
429
430 Newz (0, req, 1, aio_cb);
431
432 if (!req)
433 croak ("out of memory during aio_req allocation");
434
435 req->type = REQ_OPEN;
436 req->data = newSVsv (pathname);
437 req->dataptr = SvPV_nolen (req->data);
438 req->fd = flags;
439 req->mode = mode;
440 req->callback = SvREFCNT_inc (callback);
441
442 send_req (req);
443}
444
445void
446aio_close(fh,callback=&PL_sv_undef)
447 InputStream fh
448 SV * callback
449 PROTOTYPE: $;$
450 ALIAS:
451 aio_close = REQ_CLOSE
452 aio_fsync = REQ_FSYNC
453 aio_fdatasync = REQ_FDATASYNC
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = ix;
464 req->fd = PerlIO_fileno (fh);
465 req->callback = SvREFCNT_inc (callback);
466
467 send_req (req);
468}
469
470void
471aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472 InputStream fh
473 UV offset
474 IV length
475 SV * data
476 IV dataoffset
477 SV * callback
478 PROTOTYPE: $$$$$;$
479 CODE:
480 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
481
482void
483aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
484 OutputStream fh
485 UV offset
486 IV length
487 SV * data
488 IV dataoffset
489 SV * callback
490 PROTOTYPE: $$$$$;$
491 CODE:
492 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
493
494void
495aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496 InputStream fh
497 UV offset
498 IV length
499 SV * callback
500 PROTOTYPE: $$$;$
501 CODE:
502{
503 aio_req req;
504
505 if (length < 0)
506 croak ("length must not be negative");
507
508 Newz (0, req, 1, aio_cb);
509
510 if (!req)
511 croak ("out of memory during aio_req allocation");
512
513 req->type = REQ_READAHEAD;
514 req->fd = PerlIO_fileno (fh);
515 req->offset = offset;
516 req->length = length;
517 req->callback = SvREFCNT_inc (callback);
518
519 send_req (req);
520}
521
522void
523aio_stat(fh_or_path,callback=&PL_sv_undef)
524 SV * fh_or_path
525 SV * callback
526 ALIAS:
527 aio_stat = REQ_STAT
528 aio_lstat = REQ_LSTAT
529 CODE:
530{
531 aio_req req;
532
533 Newz (0, req, 1, aio_cb);
534
535 if (!req)
536 croak ("out of memory during aio_req allocation");
537
538 New (0, req->statdata, 1, Stat_t);
539
540 if (!req->statdata)
541 croak ("out of memory during aio_req->statdata allocation");
542
543 if (SvPOK (fh_or_path))
544 {
545 req->type = ix;
546 req->data = newSVsv (fh_or_path);
547 req->dataptr = SvPV_nolen (req->data);
548 }
549 else
550 {
551 req->type = REQ_FSTAT;
552 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553 }
554
555 req->callback = SvREFCNT_inc (callback);
556
557 send_req (req);
558}
559
560void
561aio_unlink(pathname,callback=&PL_sv_undef)
562 SV * pathname
563 SV * callback
564 CODE:
565{
566 aio_req req;
567
568 Newz (0, req, 1, aio_cb);
569
570 if (!req)
571 croak ("out of memory during aio_req allocation");
572
573 req->type = REQ_UNLINK;
574 req->data = newSVsv (pathname);
575 req->dataptr = SvPV_nolen (req->data);
576 req->callback = SvREFCNT_inc (callback);
577
578 send_req (req);
579}
580
581void
582flush()
583 PROTOTYPE:
584 CODE:
585 while (nreqs)
586 {
587 poll_wait (); 2035 poll_wait ();
588 poll_cb (); 2036 RETVAL = poll_cb ();
589 }
590
591void
592poll()
593 PROTOTYPE:
594 CODE:
595 if (nreqs)
596 {
597 poll_wait ();
598 poll_cb ();
599 }
600
601int
602poll_fileno()
603 PROTOTYPE:
604 CODE:
605 RETVAL = respipe [0];
606 OUTPUT: 2037 OUTPUT:
607 RETVAL 2038 RETVAL
608 2039
609int 2040int
2041poll_fileno ()
2042 CODE:
2043 RETVAL = s_epipe_fd (&respipe);
2044 OUTPUT:
2045 RETVAL
2046
2047int
610poll_cb(...) 2048poll_cb (...)
611 PROTOTYPE: 2049 PROTOTYPE:
612 CODE: 2050 CODE:
613 RETVAL = poll_cb (); 2051 RETVAL = poll_cb ();
614 OUTPUT: 2052 OUTPUT:
615 RETVAL 2053 RETVAL
616 2054
617void 2055void
618poll_wait() 2056poll_wait ()
619 PROTOTYPE:
620 CODE: 2057 CODE:
621 if (nreqs)
622 poll_wait (); 2058 poll_wait ();
623 2059
624int 2060int
625nreqs() 2061nreqs ()
626 PROTOTYPE:
627 CODE: 2062 CODE:
628 RETVAL = nreqs; 2063 RETVAL = eio_nreqs ();
629 OUTPUT: 2064 OUTPUT:
630 RETVAL 2065 RETVAL
631 2066
2067int
2068nready ()
2069 CODE:
2070 RETVAL = eio_nready ();
2071 OUTPUT:
2072 RETVAL
2073
2074int
2075npending ()
2076 CODE:
2077 RETVAL = eio_npending ();
2078 OUTPUT:
2079 RETVAL
2080
2081int
2082nthreads ()
2083 CODE:
2084 RETVAL = eio_nthreads ();
2085 OUTPUT:
2086 RETVAL
2087
2088int
2089fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2090 CODE:
2091 RETVAL = posix_fadvise (fh, offset, length, advice);
2092 OUTPUT:
2093 RETVAL
2094
2095IV
2096sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2097 CODE:
2098 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2099 OUTPUT:
2100 RETVAL
2101
2102void
2103mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2104 PPCODE:
2105 sv_clear_foreign (scalar);
2106{
2107 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2108 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2109 if (addr == (void *)-1)
2110 XSRETURN_NO;
2111
2112 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2113
2114 if (!(prot & PROT_WRITE))
2115 SvREADONLY_on (scalar);
2116
2117 XSRETURN_YES;
2118}
2119
2120void
2121munmap (SV *scalar)
2122 CODE:
2123 sv_clear_foreign (scalar);
2124
2125SV *
2126mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2127 CODE:
2128{
2129 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2130 void *new;
2131
2132 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2133 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2134
2135 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2136
2137 RETVAL = &PL_sv_no;
2138
2139 if (new != (void *)-1)
2140 {
2141 RETVAL = new == (void *)mg->mg_ptr
2142 ? newSVpvn ("0 but true", 10)
2143 : &PL_sv_yes;
2144
2145 mg->mg_ptr = (char *)new;
2146 mg->mg_obj = (SV *)new_length;
2147
2148 SvPVX (scalar) = mg->mg_ptr;
2149 SvCUR_set (scalar, new_length);
2150 }
2151}
2152 OUTPUT:
2153 RETVAL
2154
2155int
2156madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2157 ALIAS:
2158 mprotect = 1
2159 CODE:
2160{
2161 STRLEN svlen;
2162 void *addr = SvPVbyte (scalar, svlen);
2163 STRLEN len = SvUV (length);
2164
2165 if (offset < 0)
2166 offset += svlen;
2167
2168 if (offset < 0 || offset > svlen)
2169 croak ("offset outside of scalar");
2170
2171 if (!SvOK (length) || len + offset > svlen)
2172 len = svlen - offset;
2173
2174 addr = (void *)(((intptr_t)addr) + offset);
2175 eio_page_align (&addr, &len);
2176
2177 switch (ix)
2178 {
2179 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2180 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2181 }
2182}
2183 OUTPUT:
2184 RETVAL
2185
2186int
2187munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2188 CODE:
2189{
2190 STRLEN svlen;
2191 void *addr = SvPVbyte (scalar, svlen);
2192 size_t len = SvUV (length);
2193
2194 if (offset < 0)
2195 offset += svlen;
2196
2197 if (offset < 0 || offset > svlen)
2198 croak ("offset outside of scalar");
2199
2200 if (!SvOK (length) || len + offset > svlen)
2201 len = svlen - offset;
2202
2203 addr = (void *)(((intptr_t)addr) + offset);
2204 eio_page_align (&addr, &len);
2205#if _POSIX_MEMLOCK_RANGE
2206 RETVAL = munlock (addr, len);
2207#else
2208 RETVAL = EIO_ENOSYS ();
2209#endif
2210}
2211 OUTPUT:
2212 RETVAL
2213
2214int
2215munlockall ()
2216 CODE:
2217#if _POSIX_MEMLOCK
2218 munlockall ();
2219#else
2220 RETVAL = EIO_ENOSYS ();
2221#endif
2222 OUTPUT:
2223 RETVAL
2224
2225int
2226splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2227 CODE:
2228{
2229#if HAVE_LINUX_SPLICE
2230 loff_t off_in_, off_out_;
2231 RETVAL = splice (
2232 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2233 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2234 length, flags
2235 );
2236#else
2237 RETVAL = EIO_ENOSYS ();
2238#endif
2239}
2240 OUTPUT:
2241 RETVAL
2242
2243int
2244tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2245 CODE:
2246#if HAVE_LINUX_SPLICE
2247 RETVAL = tee (rfh, wfh, length, flags);
2248#else
2249 RETVAL = EIO_ENOSYS ();
2250#endif
2251 OUTPUT:
2252 RETVAL
2253
2254int
2255pipesize (aio_rfd rfh, int new_size = -1)
2256 PROTOTYPE: $;$
2257 CODE:
2258#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2259 if (new_size >= 0)
2260 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2261 else
2262 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2263#else
2264 errno = ENOSYS;
2265 RETVAL = -1;
2266#endif
2267 OUTPUT:
2268 RETVAL
2269
2270void
2271pipe2 (int flags = 0)
2272 PROTOTYPE: ;$
2273 PPCODE:
2274{
2275 int fd[2];
2276 int res;
2277
2278 if (flags)
2279#if HAVE_PIPE2
2280 res = pipe2 (fd, flags);
2281#else
2282 res = (errno = ENOSYS, -1);
2283#endif
2284 else
2285 res = pipe (fd);
2286
2287 if (!res)
2288 {
2289 EXTEND (SP, 2);
2290 PUSHs (newmortalFH (fd[0], O_RDONLY));
2291 PUSHs (newmortalFH (fd[1], O_WRONLY));
2292 }
2293}
2294
2295void
2296eventfd (unsigned int initval = 0, int flags = 0)
2297 PPCODE:
2298{
2299 int fd;
2300#if HAVE_EVENTFD
2301 fd = eventfd (initval, flags);
2302#else
2303 fd = (errno = ENOSYS, -1);
2304#endif
2305
2306 XPUSHs (newmortalFH (fd, O_RDWR));
2307}
2308
2309void
2310timerfd_create (int clockid, int flags = 0)
2311 PPCODE:
2312{
2313 int fd;
2314#if HAVE_TIMERFD
2315 fd = timerfd_create (clockid, flags);
2316#else
2317 fd = (errno = ENOSYS, -1);
2318#endif
2319
2320 XPUSHs (newmortalFH (fd, O_RDWR));
2321}
2322
2323void
2324timerfd_settime (SV *fh, int flags, NV interval, NV value)
2325 PPCODE:
2326{
2327 int fd = s_fileno_croak (fh, 0);
2328#if HAVE_TIMERFD
2329 int res;
2330 struct itimerspec its, ots;
2331
2332 ts_set (&its.it_interval, interval);
2333 ts_set (&its.it_value , value);
2334 res = timerfd_settime (fd, flags, &its, &ots);
2335
2336 if (!res)
2337 {
2338 EXTEND (SP, 2);
2339 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2340 PUSHs (newSVnv (ts_get (&ots.it_value)));
2341 }
2342#else
2343 errno = ENOSYS;
2344#endif
2345}
2346
2347void
2348timerfd_gettime (SV *fh)
2349 PPCODE:
2350{
2351 int fd = s_fileno_croak (fh, 0);
2352#if HAVE_TIMERFD
2353 int res;
2354 struct itimerspec ots;
2355 res = timerfd_gettime (fd, &ots);
2356
2357 if (!res)
2358 {
2359 EXTEND (SP, 2);
2360 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2361 PUSHs (newSVnv (ts_get (&ots.it_value)));
2362 }
2363#else
2364 errno = ENOSYS;
2365#endif
2366}
2367
2368UV
2369get_fdlimit ()
2370 CODE:
2371#if HAVE_RLIMITS
2372 struct rlimit rl;
2373 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2374 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2375#endif
2376 XSRETURN_UNDEF;
2377 OUTPUT:
2378 RETVAL
2379
2380void
2381min_fdlimit (UV limit = 0x7fffffffU)
2382 CODE:
2383{
2384#if HAVE_RLIMITS
2385 struct rlimit rl;
2386 rlim_t orig_rlim_max;
2387 UV bit;
2388
2389 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2390 goto fail;
2391
2392 if (rl.rlim_cur == RLIM_INFINITY)
2393 XSRETURN_YES;
2394
2395 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2396
2397 if (rl.rlim_cur < limit)
2398 {
2399 rl.rlim_cur = limit;
2400
2401 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2402 rl.rlim_max = rl.rlim_cur;
2403 }
2404
2405 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2406 XSRETURN_YES;
2407
2408 if (errno == EPERM)
2409 {
2410 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2411 /* our limit overflows a system-wide limit */
2412 /* try an adaptive algorithm, but do not lower the hardlimit */
2413 rl.rlim_max = 0;
2414 for (bit = 0x40000000U; bit; bit >>= 1)
2415 {
2416 rl.rlim_max |= bit;
2417 rl.rlim_cur = rl.rlim_max;
2418
2419 /* nevr decrease the hard limit */
2420 if (rl.rlim_max < orig_rlim_max)
2421 break;
2422
2423 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2424 rl.rlim_max &= ~bit; /* too high, remove bit again */
2425 }
2426
2427 /* now, raise the soft limit to the max permitted */
2428 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2429 {
2430 rl.rlim_cur = rl.rlim_max;
2431 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2432 errno = EPERM;
2433 }
2434 }
2435#endif
2436 fail:
2437 XSRETURN_UNDEF;
2438}
2439
2440void _on_next_submit (SV *cb)
2441 CODE:
2442 SvREFCNT_dec (on_next_submit);
2443 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2444
2445PROTOTYPES: DISABLE
2446
2447MODULE = IO::AIO PACKAGE = IO::AIO::WD
2448
2449BOOT:
2450{
2451 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2452 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2453}
2454
2455void
2456DESTROY (SV *self)
2457 CODE:
2458{
2459 aio_wd wd = SvAIO_WD (self);
2460#if HAVE_AT
2461 {
2462 SV *callback = &PL_sv_undef;
2463 dREQ; /* clobbers next_pri :/ */
2464 next_pri = req->pri; /* restore next_pri */
2465 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2466 req->type = EIO_WD_CLOSE;
2467 req->wd = wd;
2468 REQ_SEND;
2469 }
2470#else
2471 eio_wd_close_sync (wd);
2472#endif
2473}
2474
2475MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2476
2477void
2478cancel (aio_req_ornot req)
2479 CODE:
2480 eio_cancel (req);
2481
2482void
2483cb (aio_req_ornot req, SV *callback = NO_INIT)
2484 PPCODE:
2485{
2486 if (GIMME_V != G_VOID)
2487 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2488
2489 if (items > 1)
2490 {
2491 SV *cb_cv = get_cb (callback);
2492
2493 SvREFCNT_dec (req->callback);
2494 req->callback = SvREFCNT_inc (cb_cv);
2495 }
2496}
2497
2498MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2499
2500void
2501add (aio_req grp, ...)
2502 PPCODE:
2503{
2504 int i;
2505
2506 if (grp->int1 == 2)
2507 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2508
2509 for (i = 1; i < items; ++i )
2510 {
2511 aio_req req;
2512
2513 if (GIMME_V != G_VOID)
2514 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2515
2516 req = SvAIO_REQ (ST (i));
2517
2518 if (req)
2519 eio_grp_add (grp, req);
2520 }
2521}
2522
2523void
2524cancel_subs (aio_req_ornot req)
2525 CODE:
2526 req_cancel_subs (req);
2527
2528void
2529result (aio_req grp, ...)
2530 CODE:
2531{
2532 int i;
2533 AV *av;
2534
2535 grp->errorno = errno;
2536
2537 av = newAV ();
2538 av_extend (av, items - 1);
2539
2540 for (i = 1; i < items; ++i )
2541 av_push (av, newSVsv (ST (i)));
2542
2543 SvREFCNT_dec (grp->sv1);
2544 grp->sv1 = (SV *)av;
2545}
2546
2547void
2548errno (aio_req grp, int errorno = errno)
2549 CODE:
2550 grp->errorno = errorno;
2551
2552void
2553limit (aio_req grp, int limit)
2554 CODE:
2555 eio_grp_limit (grp, limit);
2556
2557void
2558feed (aio_req grp, SV *callback = &PL_sv_undef)
2559 CODE:
2560{
2561 SvREFCNT_dec (grp->sv2);
2562 grp->sv2 = newSVsv (callback);
2563 grp->feed = aio_grp_feed;
2564
2565 if (grp->int2 <= 0)
2566 grp->int2 = 2;
2567
2568 eio_grp_limit (grp, grp->int2);
2569}
2570

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