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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.265 by root, Tue Aug 14 11:50:43 2018 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"
7 8
8#include "autoconf/config.h" 9#if !defined mg_findext
9 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
10#include <pthread.h> 11#endif
11 12
12#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
13#include <errno.h> 15#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
17#include <sys/stat.h> 18#include <sys/stat.h>
18#include <limits.h> 19#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 20#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 21#include <sched.h>
23 22
24#if HAVE_SENDFILE 23#if HAVE_SYS_MKDEV_H
25# if __linux
26# include <sys/sendfile.h>
27# elif __freebsd
28# include <sys/socket.h> 24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
26# include <sys/sysmacros.h>
27#endif
28
29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
29# include <sys/uio.h> 30# include <sys/mman.h>
30# elif __hpux 31#endif
32
33/* the incompetent fool that created musl keeps __linux__, refuses
34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89
90 #define EIO_STRUCT_STAT struct _stati64
91 #define EIO_STRUCT_STATI64
92
93#else
94
31# include <sys/socket.h> 95 #include <sys/time.h>
32# elif __solaris /* not yet */
33# include <sys/sendfile.h> 96 #include <sys/select.h>
97 #include <unistd.h>
98 #include <utime.h>
99 #include <signal.h>
100
101 #define EIO_STRUCT_STAT Stat_t
102
103#endif
104
105/*****************************************************************************/
106
107#if __GNUC__ >= 3
108# define expect(expr,value) __builtin_expect ((expr),(value))
109#else
110# define expect(expr,value) (expr)
111#endif
112
113#define expect_false(expr) expect ((expr) != 0, 0)
114#define expect_true(expr) expect ((expr) != 0, 1)
115
116/*****************************************************************************/
117
118#include "config.h"
119
120#if HAVE_ST_XTIMENSEC
121# define ATIMENSEC PL_statcache.st_atimensec
122# define MTIMENSEC PL_statcache.st_mtimensec
123# define CTIMENSEC PL_statcache.st_ctimensec
124#elif HAVE_ST_XTIMESPEC
125# define ATIMENSEC PL_statcache.st_atim.tv_nsec
126# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
127# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
128#else
129# define ATIMENSEC 0
130# define MTIMENSEC 0
131# define CTIMENSEC 0
132#endif
133
134#include "schmorp.h"
135
136#if HAVE_EVENTFD
137# include <sys/eventfd.h>
138#endif
139
140#if HAVE_TIMERFD
141# include <sys/timerfd.h>
142#endif
143
144#if HAVE_RLIMITS
145 #include <sys/time.h>
146 #include <sys/resource.h>
147#endif
148
149typedef SV SV8; /* byte-sv, used for argument-checking */
150typedef int aio_rfd; /* read file desriptor */
151typedef int aio_wfd; /* write file descriptor */
152
153static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
154
155#define EIO_REQ_MEMBERS \
156 SV *callback; \
157 SV *sv1, *sv2; \
158 SV *sv3, *sv4; \
159 STRLEN stroffset; \
160 SV *self;
161
162#define EIO_NO_WRAPPERS 1
163
164#include "libeio/eio.h"
165
166static int req_invoke (eio_req *req);
167#define EIO_FINISH(req) req_invoke (req)
168static void req_destroy (eio_req *grp);
169#define EIO_DESTROY(req) req_destroy (req)
170
171#include "libeio/eio.c"
172
173#if !HAVE_POSIX_FADVISE
174# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
175#endif
176
177#if !HAVE_POSIX_MADVISE
178# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
179#endif
180
181#ifndef MAP_ANONYMOUS
182# ifdef MAP_ANON
183# define MAP_ANONYMOUS MAP_ANON
34# else 184# else
35# error sendfile support requested but not available 185# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 186# endif
37#endif 187#endif
38 188
39/* used for struct dirent, AIX doesn't provide it */ 189#ifndef makedev
40#ifndef NAME_MAX 190# define makedev(maj,min) (((maj) << 8) | (min))
41# define NAME_MAX 4096
42#endif 191#endif
192#ifndef major
193# define major(dev) ((dev) >> 8)
194#endif
195#ifndef minor
196# define minor(dev) ((dev) & 0xff)
197#endif
43 198
44#if __ia64 199#if PAGESIZE <= 0
45# define STACKSIZE 65536 200# define PAGESIZE sysconf (_SC_PAGESIZE)
201#endif
202
203/*****************************************************************************/
204
205#if !_POSIX_MAPPED_FILES
206# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
207# define munmap(addr,length) EIO_ENOSYS ()
208#endif
209
210#if !_POSIX_MEMORY_PROTECTION
211# define mprotect(addr,len,prot) EIO_ENOSYS ()
212#endif
213
214#if !MREMAP_MAYMOVE
215# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
216#endif
217
218#define FOREIGN_MAGIC PERL_MAGIC_ext
219
220static int ecb_cold
221mmap_free (pTHX_ SV *sv, MAGIC *mg)
222{
223 int old_errno = errno;
224 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
225 errno = old_errno;
226
227 mg->mg_obj = 0; /* just in case */
228
229 SvREADONLY_off (sv);
230
231 if (SvPVX (sv) != mg->mg_ptr)
232 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
233
234 SvCUR_set (sv, 0);
235 SvPVX (sv) = 0;
236 SvOK_off (sv);
237
238 return 0;
239}
240
241static MGVTBL mmap_vtbl = {
242 0, 0, 0, 0, mmap_free
243};
244
245static int ecb_cold
246sysfree_free (pTHX_ SV *sv, MAGIC *mg)
247{
248 free (mg->mg_ptr);
249 mg->mg_obj = 0; /* just in case */
250
251 SvREADONLY_off (sv);
252
253 if (SvPVX (sv) != mg->mg_ptr)
254 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
255
256 SvCUR_set (sv, 0);
257 SvPVX (sv) = 0;
258 SvOK_off (sv);
259
260 return 0;
261}
262
263static MGVTBL sysfree_vtbl = {
264 0, 0, 0, 0, sysfree_free
265};
266
267/*****************************************************************************/
268
269/* helper: set scalar to foreign ptr with custom free */
270static void
271sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
272{
273 sv_force_normal (sv);
274
275 /* we store the length in mg_obj, as namlen is I32 :/ */
276 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
277 ->mg_obj = (SV *)length;
278
279 SvUPGRADE (sv, SVt_PV); /* nop... */
280
281 if (SvLEN (sv))
282 Safefree (SvPVX (sv));
283
284 SvPVX (sv) = (char *)addr;
285 SvCUR_set (sv, length);
286 SvLEN_set (sv, 0);
287 SvPOK_only (sv);
288}
289
290static void
291sv_clear_foreign (SV *sv)
292{
293 /* todo: iterate over magic and only free ours, but of course */
294 /* the perl5porters will call that (correct) behaviour buggy */
295 sv_unmagic (sv, FOREIGN_MAGIC);
296}
297
298/*****************************************************************************/
299
300/* defines all sorts of constants to 0 unless they are already defined */
301/* also provides const_iv_ and const_niv_ macros for them */
302#include "def0.h"
303
304/*****************************************************************************/
305
306static void
307fiemap (eio_req *req)
308{
309 req->result = -1;
310
311#if HAVE_FIEMAP
312 /* assume some c99 */
313 struct fiemap *fiemap = 0;
314 size_t end_offset;
315 int count = req->int3;
316
317 req->flags |= EIO_FLAG_PTR1_FREE;
318
319 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
320 /* increase in 3.5kb steps */
321 if (count < 0)
322 count = 8;
323
324 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
325 errno = ENOMEM;
326 if (!fiemap)
327 return;
328
329 req->ptr1 = fiemap;
330
331 fiemap->fm_start = req->offs;
332 fiemap->fm_length = req->size;
333 fiemap->fm_flags = req->int2;
334 fiemap->fm_extent_count = count;
335
336 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
337 return;
338
339 if (req->int3 >= 0 /* not autosizing */
340 || !fiemap->fm_mapped_extents /* no more extents */
341 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
342 goto done;
343
344 /* else we have to loop -
345 * it would be tempting (actually I tried that first) to just query the
346 * number of extents needed, but linux often feels like not returning all
347 * extents, without telling us it left any out. this complicates
348 * this quite a bit.
349 */
350
351 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
352
353 for (;;)
354 {
355 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
356 char scratch[3072];
357 struct fiemap *incmap = (struct fiemap *)scratch;
358
359 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
360 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
361 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
362 incmap->fm_flags = fiemap->fm_flags;
363 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
364
365 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
366 return;
367
368 if (!incmap->fm_mapped_extents)
369 goto done;
370
371 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
372 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
373 errno = ENOMEM;
374 if (!fiemap)
375 return;
376
377 req->ptr1 = fiemap;
378
379 for (count = 0; count < incmap->fm_mapped_extents; ++count)
380 {
381 struct fiemap_extent *e = incmap->fm_extents + count;
382
383 if (e->fe_logical + e->fe_length >= end_offset)
384 goto done;
385
386 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
387
388 if (e->fe_flags & FIEMAP_EXTENT_LAST)
389 goto done;
390
391 }
392 }
393
394done:
395 req->result = 0;
396
46#else 397#else
47# define STACKSIZE 8192 398 errno = ENOSYS;
48#endif 399#endif
400}
401
402/*****************************************************************************/
49 403
50enum { 404enum {
51 REQ_QUIT, 405 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52 REQ_OPEN, REQ_CLOSE,
53 REQ_READ, REQ_WRITE, REQ_READAHEAD,
54 REQ_SENDFILE,
55 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56 REQ_FSYNC, REQ_FDATASYNC,
57 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58 REQ_READDIR,
59 REQ_LINK, REQ_SYMLINK,
60 REQ_SLEEP,
61 REQ_GROUP,
62}; 406};
63 407
64#define AIO_REQ_KLASS "IO::AIO::REQ"
65#define AIO_GRP_KLASS "IO::AIO::GRP"
66
67typedef struct aio_cb
68{
69 struct aio_cb *volatile next;
70
71 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73 SV *self; /* the perl counterpart of this request, if any */
74
75 SV *data, *callback;
76 SV *fh, *fh2;
77 void *dataptr, *data2ptr;
78 Stat_t *statdata;
79 off_t offset;
80 size_t length;
81 ssize_t result;
82
83 int type;
84 int fd, fd2;
85 int errorno;
86 STRLEN dataoffset;
87 mode_t mode; /* open */
88 unsigned char cancelled;
89} aio_cb;
90
91typedef aio_cb *aio_req; 408typedef eio_req *aio_req;
92typedef aio_cb *aio_req_ornot; 409typedef eio_req *aio_req_ornot;
410typedef eio_wd aio_wd;
93 411
94static int started, wanted; 412static SV *on_next_submit;
95static volatile int nreqs; 413static int next_pri = EIO_PRI_DEFAULT;
96static int max_outstanding = 1<<30; 414static int max_outstanding;
97static int respipe [2];
98 415
99static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 416static s_epipe respipe;
100static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102 417
103static volatile aio_req reqs, reqe; /* queue start, queue end */ 418static void req_destroy (aio_req req);
104static volatile aio_req ress, rese; /* queue start, queue end */
105
106static void req_free (aio_req req); 419static void req_cancel (aio_req req);
420
421static void
422want_poll (void)
423{
424 /* write a dummy byte to the pipe so fh becomes ready */
425 s_epipe_signal (&respipe);
426}
427
428static void
429done_poll (void)
430{
431 /* read any signals sent by the worker threads */
432 s_epipe_drain (&respipe);
433}
107 434
108/* must be called at most once */ 435/* must be called at most once */
109static SV *req_sv (aio_req req, const char *klass) 436static SV *
437req_sv (aio_req req, HV *stash)
110{ 438{
111 if (!req->self) 439 if (!req->self)
112 { 440 {
113 req->self = (SV *)newHV (); 441 req->self = (SV *)newHV ();
114 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 442 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
115 } 443 }
116 444
117 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 445 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
118} 446}
119 447
120static aio_req SvAIO_REQ (SV *sv) 448static SV *
449newSVaio_wd (aio_wd wd)
121{ 450{
122 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 451 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
452}
453
454static aio_req
455SvAIO_REQ (SV *sv)
456{
457 MAGIC *mg;
458
459 if (!SvROK (sv)
460 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
461 || (SvSTASH (SvRV (sv)) != aio_grp_stash
462 && SvSTASH (SvRV (sv)) != aio_req_stash
463 && !sv_derived_from (sv, "IO::AIO::REQ")))
123 croak ("object of class " AIO_REQ_KLASS " expected"); 464 croak ("object of class IO::AIO::REQ expected");
124 465
125 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 466 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126 467
127 return mg ? (aio_req)mg->mg_ptr : 0; 468 return mg ? (aio_req)mg->mg_ptr : 0;
128} 469}
129 470
471static aio_wd
472SvAIO_WD (SV *sv)
473{
474 if (!SvROK (sv)
475 || SvTYPE (SvRV (sv)) != SVt_PVMG
476 || SvSTASH (SvRV (sv)) != aio_wd_stash)
477 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
478
479 return (aio_wd)(long)SvIVX (SvRV (sv));
480}
481
482static SV *
483newmortalFH (int fd, int flags)
484{
485 if (fd < 0)
486 return &PL_sv_undef;
487
488 GV *gv = (GV *)sv_newmortal ();
489 char sym[64];
490 int symlen;
491
492 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
493 gv_init (gv, aio_stash, sym, symlen, 0);
494
495 symlen = snprintf (
496 sym,
497 sizeof (sym),
498 "%s&=%d",
499 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
500 fd
501 );
502
503 return do_open (gv, sym, symlen, 0, 0, 0, 0)
504 ? (SV *)gv : &PL_sv_undef;
505}
506
507static void
130static void aio_grp_feed (aio_req grp) 508aio_grp_feed (aio_req grp)
131{ 509{
132 while (grp->length < grp->fd2) 510 if (grp->sv2 && SvOK (grp->sv2))
133 { 511 {
134 int old_len = grp->length; 512 dSP;
135 513
136 if (grp->fh2 && SvOK (grp->fh2)) 514 ENTER;
515 SAVETMPS;
516 PUSHMARK (SP);
517 XPUSHs (req_sv (grp, aio_grp_stash));
518 PUTBACK;
519 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
520 SPAGAIN;
521 FREETMPS;
522 LEAVE;
523 }
524}
525
526static void
527req_submit (eio_req *req)
528{
529 eio_submit (req);
530
531 if (expect_false (on_next_submit))
532 {
533 dSP;
534 SV *cb = sv_2mortal (on_next_submit);
535
536 on_next_submit = 0;
537
538 PUSHMARK (SP);
539 PUTBACK;
540 call_sv (cb, G_DISCARD | G_EVAL);
541 }
542}
543
544static int
545req_invoke (eio_req *req)
546{
547 if (req->flags & FLAG_SV2_RO_OFF)
548 SvREADONLY_off (req->sv2);
549
550 if (!EIO_CANCELLED (req) && req->callback)
551 {
552 dSP;
553 static SV *sv_result_cache; /* caches the result integer SV */
554 SV *sv_result;
555
556 ENTER;
557 SAVETMPS;
558 PUSHMARK (SP);
559 EXTEND (SP, 1);
560
561 /* do not recreate the result IV from scratch each time */
562 if (expect_true (sv_result_cache))
137 { 563 {
138 dSP; 564 sv_result = sv_result_cache; sv_result_cache = 0;
139 565 SvIV_set (sv_result, req->result);
140 ENTER; 566 SvIOK_only (sv_result);
141 SAVETMPS;
142 PUSHMARK (SP);
143 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
144 PUTBACK;
145 call_sv (grp->fh2, G_VOID | G_EVAL);
146 SPAGAIN;
147 FREETMPS;
148 LEAVE;
149 } 567 }
150 568 else
151 /* stop if no progress has been made */
152 if (old_len == grp->length)
153 { 569 {
154 SvREFCNT_dec (grp->fh2); 570 sv_result = newSViv (req->result);
155 grp->fh2 = 0; 571 SvREADONLY_on (sv_result);
156 break;
157 } 572 }
573
574 switch (req->type)
575 {
576 case EIO_WD_OPEN:
577 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
578 break;
579
580 case EIO_READDIR:
581 {
582 SV *rv = &PL_sv_undef;
583
584 if (req->result >= 0)
585 {
586 int i;
587 char *names = (char *)req->ptr2;
588 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
589 AV *av = newAV ();
590
591 av_extend (av, req->result - 1);
592
593 for (i = 0; i < req->result; ++i)
594 {
595 if (req->int1 & EIO_READDIR_DENTS)
596 {
597 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
598
599 if (req->int1 & EIO_READDIR_CUSTOM2)
600 {
601 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
602 AV *avent = newAV ();
603
604 av_extend (avent, 2);
605
606 if (!sv_type [ent->type])
607 {
608 sv_type [ent->type] = newSViv (ent->type);
609 SvREADONLY_on (sv_type [ent->type]);
610 }
611
612 av_store (avent, 0, namesv);
613 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
614 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
615
616 av_store (av, i, newRV_noinc ((SV *)avent));
617 }
618 else
619 av_store (av, i, namesv);
620
621 ++ent;
622 }
623 else
624 {
625 SV *name = newSVpv (names, 0);
626 av_store (av, i, name);
627 names += SvCUR (name) + 1;
628 }
629 }
630
631 rv = sv_2mortal (newRV_noinc ((SV *)av));
632 }
633
634 PUSHs (rv);
635
636 if (req->int1 & EIO_READDIR_CUSTOM1)
637 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
638 }
639 break;
640
641 case EIO_OPEN:
642 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
643 break;
644
645 case EIO_STATVFS:
646 case EIO_FSTATVFS:
647 {
648 SV *rv = &PL_sv_undef;
649
650#ifndef _WIN32
651 if (req->result >= 0)
652 {
653 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
654 HV *hv = newHV ();
655 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
656 * chooses to make it a struct.
657 */
658 unsigned long fsid = 0;
659 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
660
661 rv = sv_2mortal (newRV_noinc ((SV *)hv));
662
663 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
664 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
665 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
666 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
667 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
668 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
669 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
670 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
671 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
672 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
673 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
674 }
675#endif
676
677 PUSHs (rv);
678 }
679
680 break;
681
682 case EIO_GROUP:
683 req->int1 = 2; /* mark group as finished */
684
685 if (req->sv1)
686 {
687 int i;
688 AV *av = (AV *)req->sv1;
689
690 EXTEND (SP, AvFILL (av) + 1);
691 for (i = 0; i <= AvFILL (av); ++i)
692 PUSHs (*av_fetch (av, i, 0));
693 }
694 break;
695
696 case EIO_NOP:
697 case EIO_BUSY:
698 break;
699
700 case EIO_READLINK:
701 case EIO_REALPATH:
702 if (req->result > 0)
703 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
704 break;
705
706 case EIO_STAT:
707 case EIO_LSTAT:
708 case EIO_FSTAT:
709 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
710
711 if (!(PL_laststatval = req->result))
712 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
713 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
714
715 PUSHs (sv_result);
716 break;
717
718 case EIO_SEEK:
719 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
720 break;
721
722 case EIO_READ:
723 {
724 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
725 *SvEND (req->sv2) = 0;
726 SvPOK_only (req->sv2);
727 SvSETMAGIC (req->sv2);
728 PUSHs (sv_result);
729 }
730 break;
731
732 case EIO_SLURP:
733 {
734 if (req->result >= 0)
735 {
736 /* if length was originally not known, we steal the malloc'ed memory */
737 if (req->flags & EIO_FLAG_PTR2_FREE)
738 {
739 req->flags &= ~EIO_FLAG_PTR2_FREE;
740 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
741 }
742 else
743 {
744 SvCUR_set (req->sv2, req->result);
745 *SvEND (req->sv2) = 0;
746 SvPOK_only (req->sv2);
747 }
748
749 SvSETMAGIC (req->sv2);
750 }
751
752 PUSHs (sv_result);
753 }
754 break;
755
756 case EIO_CUSTOM:
757 if (req->feed == fiemap)
758 {
759#if HAVE_FIEMAP
760 if (!req->result)
761 {
762 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
763
764 if (fiemap->fm_extent_count)
765 {
766 AV *av = newAV ();
767 int i;
768
769 while (fiemap->fm_mapped_extents)
770 {
771 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
772 AV *ext_av = newAV ();
773
774 av_store (ext_av, 3, newSVuv (extent->fe_flags));
775 av_store (ext_av, 2, newSVval64 (extent->fe_length));
776 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
777 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
778
779 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
780 }
781
782 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
783 }
784 else
785 {
786 SvIV_set (sv_result, fiemap->fm_mapped_extents);
787 PUSHs (sv_result);
788 }
789 }
790#endif
791 }
792 else
793 PUSHs (sv_result);
794 break;
795
796 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
797 if (req->result > 0)
798 SvIV_set (sv_result, 0);
799 /* FALLTHROUGH */
800
801 default:
802 PUSHs (sv_result);
803 break;
804 }
805
806 errno = req->errorno;
807
808 PUTBACK;
809 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
810 SPAGAIN;
811
812 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
813 SvREFCNT_dec (sv_result);
814 else
815 sv_result_cache = sv_result;
816
817 FREETMPS;
818 LEAVE;
819
820 PUTBACK;
158 } 821 }
159}
160 822
161static void poll_wait () 823 return !!SvTRUE (ERRSV);
162{
163 if (nreqs && !ress)
164 {
165 fd_set rfd;
166 FD_ZERO(&rfd);
167 FD_SET(respipe [0], &rfd);
168
169 select (respipe [0] + 1, &rfd, 0, 0, 0);
170 }
171} 824}
172 825
173static void req_invoke (aio_req req) 826static void
827req_destroy (aio_req req)
174{ 828{
175 dSP;
176 int errorno = errno;
177
178 if (req->cancelled || !SvOK (req->callback))
179 return;
180
181 errno = req->errorno;
182
183 ENTER;
184 SAVETMPS;
185 PUSHMARK (SP);
186 EXTEND (SP, 1);
187
188 switch (req->type)
189 {
190 case REQ_READDIR:
191 {
192 SV *rv = &PL_sv_undef;
193
194 if (req->result >= 0)
195 {
196 char *buf = req->data2ptr;
197 AV *av = newAV ();
198
199 while (req->result)
200 {
201 SV *sv = newSVpv (buf, 0);
202
203 av_push (av, sv);
204 buf += SvCUR (sv) + 1;
205 req->result--;
206 }
207
208 rv = sv_2mortal (newRV_noinc ((SV *)av));
209 }
210
211 PUSHs (rv);
212 }
213 break;
214
215 case REQ_OPEN:
216 {
217 /* convert fd to fh */
218 SV *fh;
219
220 PUSHs (sv_2mortal (newSViv (req->result)));
221 PUTBACK;
222 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
223 SPAGAIN;
224
225 fh = SvREFCNT_inc (POPs);
226
227 PUSHMARK (SP);
228 XPUSHs (sv_2mortal (fh));
229 }
230 break;
231
232 case REQ_GROUP:
233 req->fd = 2; /* mark group as finished */
234
235 if (req->data)
236 {
237 int i;
238 AV *av = (AV *)req->data;
239
240 EXTEND (SP, AvFILL (av) + 1);
241 for (i = 0; i <= AvFILL (av); ++i)
242 PUSHs (*av_fetch (av, i, 0));
243 }
244 break;
245
246 case REQ_SLEEP:
247 break;
248
249 default:
250 PUSHs (sv_2mortal (newSViv (req->result)));
251 break;
252 }
253
254
255 PUTBACK;
256 call_sv (req->callback, G_VOID | G_EVAL);
257 SPAGAIN;
258
259 if (SvTRUE (ERRSV))
260 {
261 req_free (req);
262 croak (0);
263 }
264
265 FREETMPS;
266 LEAVE;
267
268 errno = errorno;
269}
270
271static void req_free (aio_req req)
272{
273 if (req->grp)
274 {
275 aio_req grp = req->grp;
276
277 /* unlink request */
278 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
279 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280
281 if (grp->grp_first == req)
282 grp->grp_first = req->grp_next;
283
284 --grp->length;
285
286 /* call feeder, if applicable */
287 aio_grp_feed (grp);
288
289 /* finish, if done */
290 if (!grp->length && grp->fd)
291 {
292 req_invoke (grp);
293 req_free (grp);
294 }
295 }
296
297 if (req->self) 829 if (req->self)
298 { 830 {
299 sv_unmagic (req->self, PERL_MAGIC_ext); 831 sv_unmagic (req->self, PERL_MAGIC_ext);
300 SvREFCNT_dec (req->self); 832 SvREFCNT_dec (req->self);
301 } 833 }
302 834
303 SvREFCNT_dec (req->data);
304 SvREFCNT_dec (req->fh); 835 SvREFCNT_dec (req->sv1);
305 SvREFCNT_dec (req->fh2); 836 SvREFCNT_dec (req->sv2);
837 SvREFCNT_dec (req->sv3);
838 SvREFCNT_dec (req->sv4);
306 SvREFCNT_dec (req->callback); 839 SvREFCNT_dec (req->callback);
307 Safefree (req->statdata);
308 840
309 if (req->type == REQ_READDIR && req->result >= 0)
310 free (req->data2ptr);
311
312 Safefree (req); 841 free (req);
313} 842}
314 843
315static void req_cancel (aio_req req) 844static void
845req_cancel_subs (aio_req grp)
316{ 846{
317 req->cancelled = 1;
318
319 if (req->type == REQ_GROUP) 847 if (grp->type != EIO_GROUP)
848 return;
849
850 SvREFCNT_dec (grp->sv2);
851 grp->sv2 = 0;
852
853 eio_grp_cancel (grp);
854}
855
856static void ecb_cold
857create_respipe (void)
858{
859 if (s_epipe_renew (&respipe))
860 croak ("IO::AIO: unable to initialize result pipe");
861}
862
863static void
864poll_wait (void)
865{
866 while (eio_nreqs ())
320 { 867 {
321 aio_req sub; 868 int size;
322 869
323 for (sub = req->grp_first; sub; sub = sub->grp_next) 870 X_LOCK (EIO_POOL->reslock);
324 req_cancel (sub); 871 size = EIO_POOL->res_queue.size;
872 X_UNLOCK (EIO_POOL->reslock);
873
874 if (size)
875 return;
876
877 etp_maybe_start_thread (EIO_POOL);
878
879 s_epipe_wait (&respipe);
325 } 880 }
326} 881}
327 882
328static int poll_cb () 883static int
884poll_cb (void)
329{ 885{
330 dSP;
331 int count = 0;
332 int do_croak = 0;
333 aio_req req;
334
335 for (;;) 886 for (;;)
336 { 887 {
337 pthread_mutex_lock (&reslock); 888 int res = eio_poll ();
338 req = ress;
339 889
340 if (req) 890 if (res > 0)
891 croak (0);
892
893 if (!max_outstanding || max_outstanding > eio_nreqs ())
894 return res;
895
896 poll_wait ();
897 }
898}
899
900static void ecb_cold
901reinit (void)
902{
903 create_respipe ();
904
905 if (eio_init (want_poll, done_poll) < 0)
906 croak ("IO::AIO: unable to initialise eio library");
907}
908
909/*****************************************************************************/
910
911static SV *
912get_cb (SV *cb_sv)
913{
914 SvGETMAGIC (cb_sv);
915 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
916}
917
918static aio_req ecb_noinline
919dreq (SV *callback)
920{
921 SV *cb_cv;
922 aio_req req;
923 int req_pri = next_pri;
924 next_pri = EIO_PRI_DEFAULT;
925
926 cb_cv = get_cb (callback);
927
928 req = calloc (sizeof (*req), 1);
929 if (!req)
930 croak ("out of memory during eio_req allocation");
931
932 req->callback = SvREFCNT_inc (cb_cv);
933 req->pri = req_pri;
934
935 return req;
936}
937
938#define dREQ \
939 aio_req req = dreq (callback); \
940
941#define REQ_SEND \
942 PUTBACK; \
943 req_submit (req); \
944 SPAGAIN; \
945 \
946 if (GIMME_V != G_VOID) \
947 XPUSHs (req_sv (req, aio_req_stash));
948
949ecb_inline void
950req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
951{
952 if (expect_false (SvROK (path)))
953 {
954 SV *rv = SvRV (path);
955 SV *wdob;
956
957 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
341 { 958 {
342 ress = req->next; 959 path = AvARRAY (rv)[1];
960 wdob = AvARRAY (rv)[0];
343 961
344 if (!ress) 962 if (SvOK (wdob))
345 { 963 {
346 /* read any signals sent by the worker threads */ 964 *wd = SvAIO_WD (wdob);
347 char buf [32]; 965 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
348 while (read (respipe [0], buf, 32) == 32)
349 ;
350
351 rese = 0;
352 } 966 }
967 else
968 *wd = EIO_INVALID_WD;
353 } 969 }
354 970 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
355 pthread_mutex_unlock (&reslock);
356
357 if (!req)
358 break;
359
360 nreqs--;
361
362 if (req->type == REQ_QUIT)
363 started--;
364 else if (req->type == REQ_GROUP && req->length)
365 { 971 {
366 req->fd = 1; /* mark request as delayed */ 972 *wd = (aio_wd)(long)SvIVX (rv);
367 continue; 973 *wdsv = SvREFCNT_inc_NN (rv);
974 *ptr = ".";
975 return; /* path set to "." */
368 } 976 }
369 else 977 else
370 { 978 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
371 if (req->type == REQ_READ)
372 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
373
374 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
375 SvREADONLY_off (req->data);
376
377 if (req->statdata)
378 {
379 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
380 PL_laststatval = req->result;
381 PL_statcache = *(req->statdata);
382 }
383
384 req_invoke (req);
385
386 count++;
387 }
388
389 req_free (req);
390 } 979 }
391 980
392 return count; 981 *pathsv = newSVsv (path);
982 *ptr = SvPVbyte_nolen (*pathsv);
393} 983}
394 984
395static void *aio_proc(void *arg); 985static void ecb_noinline
396 986req_set_path1 (aio_req req, SV *path)
397static void start_thread (void)
398{ 987{
399 sigset_t fullsigset, oldsigset; 988 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
400 pthread_t tid;
401 pthread_attr_t attr;
402
403 pthread_attr_init (&attr);
404 pthread_attr_setstacksize (&attr, STACKSIZE);
405 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
406
407 sigfillset (&fullsigset);
408 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
409
410 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
411 started++;
412
413 sigprocmask (SIG_SETMASK, &oldsigset, 0);
414} 989}
415 990
416static void req_send (aio_req req) 991static void ecb_noinline
992req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
417{ 993{
418 while (started < wanted && nreqs >= started) 994 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
419 start_thread ();
420 995
421 nreqs++; 996 switch (SvTYPE (rv))
422
423 pthread_mutex_lock (&reqlock);
424
425 req->next = 0;
426
427 if (reqe)
428 { 997 {
429 reqe->next = req; 998 case SVt_PVIO:
430 reqe = req; 999 case SVt_PVLV:
1000 case SVt_PVGV:
1001 req->type = type_fh;
1002 req->sv1 = newSVsv (fh_or_path);
1003 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1004 break;
1005
1006 default:
1007 req->type = type_path;
1008 req_set_path1 (req, fh_or_path);
1009 break;
431 } 1010 }
432 else
433 reqe = reqs = req;
434
435 pthread_cond_signal (&reqwait);
436 pthread_mutex_unlock (&reqlock);
437
438 if (nreqs > max_outstanding)
439 for (;;)
440 {
441 poll_cb ();
442
443 if (nreqs <= max_outstanding)
444 break;
445
446 poll_wait ();
447 }
448}
449
450static void end_thread (void)
451{
452 aio_req req;
453 Newz (0, req, 1, aio_cb);
454 req->type = REQ_QUIT;
455
456 req_send (req);
457}
458
459static void min_parallel (int nthreads)
460{
461 if (wanted < nthreads)
462 wanted = nthreads;
463}
464
465static void max_parallel (int nthreads)
466{
467 int cur = started;
468
469 if (wanted > nthreads)
470 wanted = nthreads;
471
472 while (cur > wanted)
473 {
474 end_thread ();
475 cur--;
476 }
477
478 while (started > wanted)
479 {
480 poll_wait ();
481 poll_cb ();
482 }
483}
484
485static void create_pipe ()
486{
487 if (pipe (respipe))
488 croak ("unable to initialize result pipe");
489
490 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
491 croak ("cannot set result pipe to nonblocking mode");
492
493 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
494 croak ("cannot set result pipe to nonblocking mode");
495} 1011}
496 1012
497/*****************************************************************************/ 1013/*****************************************************************************/
498/* work around various missing functions */
499 1014
500#if !HAVE_PREADWRITE 1015static void
501# define pread aio_pread 1016ts_set (struct timespec *ts, NV value)
502# define pwrite aio_pwrite
503
504/*
505 * make our pread/pwrite safe against themselves, but not against
506 * normal read/write by using a mutex. slows down execution a lot,
507 * but that's your problem, not mine.
508 */
509static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
510
511static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
512{ 1017{
513 ssize_t res; 1018 ts->tv_sec = value;
514 off_t ooffset; 1019 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
515
516 pthread_mutex_lock (&preadwritelock);
517 ooffset = lseek (fd, 0, SEEK_CUR);
518 lseek (fd, offset, SEEK_SET);
519 res = read (fd, buf, count);
520 lseek (fd, ooffset, SEEK_SET);
521 pthread_mutex_unlock (&preadwritelock);
522
523 return res;
524} 1020}
525 1021
526static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1022static NV
1023ts_get (const struct timespec *ts)
527{ 1024{
528 ssize_t res; 1025 return ts->tv_sec + ts->tv_nsec * 1e-9;
529 off_t ooffset;
530
531 pthread_mutex_lock (&preadwritelock);
532 ooffset = lseek (fd, 0, SEEK_CUR);
533 lseek (fd, offset, SEEK_SET);
534 res = write (fd, buf, count);
535 lseek (fd, offset, SEEK_SET);
536 pthread_mutex_unlock (&preadwritelock);
537
538 return res;
539} 1026}
540#endif
541 1027
542#if !HAVE_FDATASYNC 1028/*****************************************************************************/
543# define fdatasync fsync
544#endif
545 1029
546#if !HAVE_READAHEAD 1030XS(boot_IO__AIO) ecb_cold;
547# define readahead aio_readahead
548 1031
549static ssize_t readahead (int fd, off_t offset, size_t count) 1032MODULE = IO::AIO PACKAGE = IO::AIO
550{
551 char readahead_buf[4096];
552 1033
553 while (count > 0) 1034PROTOTYPES: ENABLE
554 {
555 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
556 1035
557 pread (fd, readahead_buf, len, offset); 1036BOOT:
558 offset += len;
559 count -= len;
560 }
561
562 errno = 0;
563}
564#endif
565
566#if !HAVE_READDIR_R
567# define readdir_r aio_readdir_r
568
569static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
570
571static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
572{ 1037{
573 struct dirent *e; 1038 static const struct {
574 int errorno; 1039 const char *name;
1040 IV iv;
1041 } *civ, const_iv[] = {
1042# define const_niv(name, value) { # name, (IV) value },
1043# define const_iv(name) { # name, (IV) name },
1044# define const_eio(name) { # name, (IV) EIO_ ## name },
575 1045
576 pthread_mutex_lock (&readdirlock); 1046 /* you have to re-run ./gendef0 after adding/removing any constants here */
1047 /* the first block can be undef if missing */
1048 const_iv (ENOSYS)
1049 const_iv (EXDEV)
1050 const_iv (EBADR)
577 1051
578 e = readdir (dirp); 1052 /* for lseek */
579 errorno = errno; 1053 const_iv (SEEK_DATA)
1054 const_iv (SEEK_HOLE)
580 1055
581 if (e) 1056 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
582 { 1057 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
583 *res = ent; 1058 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
584 strcpy (ent->d_name, e->d_name); 1059 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
585 } 1060 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
586 else 1061 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
587 *res = 0;
588 1062
589 pthread_mutex_unlock (&readdirlock); 1063 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1064 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1065 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1066 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1067 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
590 1068
591 errno = errorno; 1069 /* the second block will be 0 when missing */
592 return e ? 0 : -1; 1070 const_iv (O_ACCMODE)
593}
594#endif
595 1071
596/* sendfile always needs emulation */ 1072 const_iv (O_RDONLY)
597static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1073 const_iv (O_WRONLY)
598{ 1074 const_iv (O_RDWR)
599 ssize_t res; 1075 const_iv (O_CREAT)
1076 const_iv (O_TRUNC)
1077 const_iv (O_EXCL)
1078 const_iv (O_APPEND)
600 1079
601 if (!count) 1080 const_iv (O_ASYNC)
602 return 0; 1081 const_iv (O_DIRECT)
1082 const_iv (O_NOATIME)
603 1083
604#if HAVE_SENDFILE 1084 const_iv (O_CLOEXEC)
605# if __linux 1085 const_iv (O_NOCTTY)
606 res = sendfile (ofd, ifd, &offset, count); 1086 const_iv (O_NOFOLLOW)
1087 const_iv (O_NONBLOCK)
1088 const_iv (O_EXEC)
1089 const_iv (O_SEARCH)
1090 const_iv (O_DIRECTORY)
1091 const_iv (O_DSYNC)
1092 const_iv (O_RSYNC)
1093 const_iv (O_SYNC)
1094 const_iv (O_PATH)
1095 const_iv (O_TMPFILE)
1096 const_iv (O_TTY_INIT)
607 1097
608# elif __freebsd 1098 const_iv (S_IFIFO)
609 /* 1099 const_iv (S_IFCHR)
610 * Of course, the freebsd sendfile is a dire hack with no thoughts 1100 const_iv (S_IFBLK)
611 * wasted on making it similar to other I/O functions. 1101 const_iv (S_IFLNK)
612 */ 1102 const_iv (S_IFREG)
613 { 1103 const_iv (S_IFDIR)
614 off_t sbytes; 1104 const_iv (S_IFWHT)
615 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1105 const_iv (S_IFSOCK)
1106 const_iv (S_IFMT)
616 1107
617 if (res < 0 && sbytes) 1108 const_iv (ST_RDONLY)
618 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1109 const_iv (ST_NOSUID)
619 res = sbytes; 1110 const_iv (ST_NODEV)
1111 const_iv (ST_NOEXEC)
1112 const_iv (ST_SYNCHRONOUS)
1113 const_iv (ST_MANDLOCK)
1114 const_iv (ST_WRITE)
1115 const_iv (ST_APPEND)
1116 const_iv (ST_IMMUTABLE)
1117 const_iv (ST_NOATIME)
1118 const_iv (ST_NODIRATIME)
1119 const_iv (ST_RELATIME)
1120
1121 const_iv (PROT_NONE)
1122 const_iv (PROT_EXEC)
1123 const_iv (PROT_READ)
1124 const_iv (PROT_WRITE)
1125
1126 const_iv (MAP_PRIVATE)
1127 const_iv (MAP_SHARED)
1128 const_iv (MAP_FIXED)
1129 const_iv (MAP_ANONYMOUS)
1130
1131 /* linuxish */
1132 const_iv (MAP_LOCKED)
1133 const_iv (MAP_NORESERVE)
1134 const_iv (MAP_POPULATE)
1135 const_iv (MAP_NONBLOCK)
1136 const_iv (MAP_GROWSDOWN)
1137 const_iv (MAP_32BIT)
1138 const_iv (MAP_HUGETLB)
1139 const_iv (MAP_STACK)
1140
1141 const_iv (MREMAP_MAYMOVE)
1142 const_iv (MREMAP_FIXED)
1143
1144 const_iv (F_DUPFD_CLOEXEC)
1145
1146 const_iv (MSG_CMSG_CLOEXEC)
1147 const_iv (SOCK_CLOEXEC)
1148
1149 const_iv (F_OFD_GETLK)
1150 const_iv (F_OFD_SETLK)
1151 const_iv (F_OFD_GETLKW)
1152
1153 const_iv (FIFREEZE)
1154 const_iv (FITHAW)
1155 const_iv (FITRIM)
1156 const_iv (FICLONE)
1157 const_iv (FICLONERANGE)
1158 const_iv (FIDEDUPERANGE)
1159
1160 const_iv (FS_IOC_GETFLAGS)
1161 const_iv (FS_IOC_SETFLAGS)
1162 const_iv (FS_IOC_GETVERSION)
1163 const_iv (FS_IOC_SETVERSION)
1164 const_iv (FS_IOC_FIEMAP)
1165 const_iv (FS_IOC_FSGETXATTR)
1166 const_iv (FS_IOC_FSSETXATTR)
1167 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1168 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1169 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1170
1171 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1172
1173 const_iv (FS_SECRM_FL)
1174 const_iv (FS_UNRM_FL)
1175 const_iv (FS_COMPR_FL)
1176 const_iv (FS_SYNC_FL)
1177 const_iv (FS_IMMUTABLE_FL)
1178 const_iv (FS_APPEND_FL)
1179 const_iv (FS_NODUMP_FL)
1180 const_iv (FS_NOATIME_FL)
1181 const_iv (FS_DIRTY_FL)
1182 const_iv (FS_COMPRBLK_FL)
1183 const_iv (FS_NOCOMP_FL)
1184 const_iv (FS_ENCRYPT_FL)
1185 const_iv (FS_BTREE_FL)
1186 const_iv (FS_INDEX_FL)
1187 const_iv (FS_JOURNAL_DATA_FL)
1188 const_iv (FS_NOTAIL_FL)
1189 const_iv (FS_DIRSYNC_FL)
1190 const_iv (FS_TOPDIR_FL)
1191 const_iv (FS_FL_USER_MODIFIABLE)
1192
1193 const_iv (FS_XFLAG_REALTIME)
1194 const_iv (FS_XFLAG_PREALLOC)
1195 const_iv (FS_XFLAG_IMMUTABLE)
1196 const_iv (FS_XFLAG_APPEND)
1197 const_iv (FS_XFLAG_SYNC)
1198 const_iv (FS_XFLAG_NOATIME)
1199 const_iv (FS_XFLAG_NODUMP)
1200 const_iv (FS_XFLAG_RTINHERIT)
1201 const_iv (FS_XFLAG_PROJINHERIT)
1202 const_iv (FS_XFLAG_NOSYMLINKS)
1203 const_iv (FS_XFLAG_EXTSIZE)
1204 const_iv (FS_XFLAG_EXTSZINHERIT)
1205 const_iv (FS_XFLAG_NODEFRAG)
1206 const_iv (FS_XFLAG_FILESTREAM)
1207 const_iv (FS_XFLAG_DAX)
1208 const_iv (FS_XFLAG_HASATTR)
1209
1210 const_iv (FIEMAP_FLAG_SYNC)
1211 const_iv (FIEMAP_FLAG_XATTR)
1212 const_iv (FIEMAP_FLAGS_COMPAT)
1213 const_iv (FIEMAP_EXTENT_LAST)
1214 const_iv (FIEMAP_EXTENT_UNKNOWN)
1215 const_iv (FIEMAP_EXTENT_DELALLOC)
1216 const_iv (FIEMAP_EXTENT_ENCODED)
1217 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1218 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1219 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1220 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1221 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1222 const_iv (FIEMAP_EXTENT_MERGED)
1223 const_iv (FIEMAP_EXTENT_SHARED)
1224
1225 const_iv (SPLICE_F_MOVE)
1226 const_iv (SPLICE_F_NONBLOCK)
1227 const_iv (SPLICE_F_MORE)
1228 const_iv (SPLICE_F_GIFT)
1229
1230 const_iv (EFD_CLOEXEC)
1231 const_iv (EFD_NONBLOCK)
1232 const_iv (EFD_SEMAPHORE)
1233
1234 const_iv (CLOCK_REALTIME)
1235 const_iv (CLOCK_MONOTONIC)
1236 const_iv (CLOCK_BOOTTIME)
1237 const_iv (CLOCK_REALTIME_ALARM)
1238 const_iv (CLOCK_BOOTTIME_ALARM)
1239
1240 const_iv (TFD_NONBLOCK)
1241 const_iv (TFD_CLOEXEC)
1242
1243 const_iv (TFD_TIMER_ABSTIME)
1244 const_iv (TFD_TIMER_CANCEL_ON_SET)
1245
1246 /* these are libeio constants, and are independent of gendef0 */
1247 const_eio (SEEK_SET)
1248 const_eio (SEEK_CUR)
1249 const_eio (SEEK_END)
1250
1251 const_eio (MCL_FUTURE)
1252 const_eio (MCL_CURRENT)
1253
1254 const_eio (MS_ASYNC)
1255 const_eio (MS_INVALIDATE)
1256 const_eio (MS_SYNC)
1257
1258 const_eio (MT_MODIFY)
1259
1260 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1261 const_eio (SYNC_FILE_RANGE_WRITE)
1262 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1263
1264 const_eio (FALLOC_FL_KEEP_SIZE)
1265 const_eio (FALLOC_FL_PUNCH_HOLE)
1266 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1267 const_eio (FALLOC_FL_ZERO_RANGE)
1268 const_eio (FALLOC_FL_INSERT_RANGE)
1269 const_eio (FALLOC_FL_UNSHARE_RANGE)
1270
1271 const_eio (RENAME_NOREPLACE)
1272 const_eio (RENAME_EXCHANGE)
1273 const_eio (RENAME_WHITEOUT)
1274
1275 const_eio (READDIR_DENTS)
1276 const_eio (READDIR_DIRS_FIRST)
1277 const_eio (READDIR_STAT_ORDER)
1278 const_eio (READDIR_FOUND_UNKNOWN)
1279
1280 const_eio (DT_UNKNOWN)
1281 const_eio (DT_FIFO)
1282 const_eio (DT_CHR)
1283 const_eio (DT_DIR)
1284 const_eio (DT_BLK)
1285 const_eio (DT_REG)
1286 const_eio (DT_LNK)
1287 const_eio (DT_SOCK)
1288 const_eio (DT_WHT)
620 } 1289 };
621 1290
622# elif __hpux 1291 aio_stash = gv_stashpv ("IO::AIO" , 1);
623 res = sendfile (ofd, ifd, offset, count, 0, 0); 1292 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1293 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1294 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
624 1295
625# elif __solaris 1296 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
626 { 1297 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
627 struct sendfilevec vec;
628 size_t sbytes;
629 1298
630 vec.sfv_fd = ifd; 1299 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
631 vec.sfv_flag = 0;
632 vec.sfv_off = offset;
633 vec.sfv_len = count;
634 1300
635 res = sendfilev (ofd, &vec, 1, &sbytes); 1301 reinit ();
1302}
636 1303
637 if (res < 0 && sbytes) 1304void
1305reinit ()
1306 PROTOTYPE:
1307
1308void
1309max_poll_reqs (unsigned int nreqs)
1310 PROTOTYPE: $
1311 CODE:
1312 eio_set_max_poll_reqs (nreqs);
1313
1314void
1315max_poll_time (double nseconds)
1316 PROTOTYPE: $
1317 CODE:
1318 eio_set_max_poll_time (nseconds);
1319
1320void
1321min_parallel (unsigned int nthreads)
1322 PROTOTYPE: $
1323 CODE:
1324 eio_set_min_parallel (nthreads);
1325
1326void
1327max_parallel (unsigned int nthreads)
1328 PROTOTYPE: $
1329 CODE:
1330 eio_set_max_parallel (nthreads);
1331
1332void
1333max_idle (unsigned int nthreads)
1334 PROTOTYPE: $
1335 CODE:
1336 eio_set_max_idle (nthreads);
1337
1338void
1339idle_timeout (unsigned int seconds)
1340 PROTOTYPE: $
1341 CODE:
1342 eio_set_idle_timeout (seconds);
1343
1344void
1345max_outstanding (unsigned int maxreqs)
1346 PROTOTYPE: $
1347 CODE:
1348 max_outstanding = maxreqs;
1349
1350void
1351aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1352 PPCODE:
1353{
1354 dREQ;
1355
1356 req->type = EIO_WD_OPEN;
1357 req_set_path1 (req, pathname);
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1364 PPCODE:
1365{
1366 dREQ;
1367
1368 req->type = EIO_OPEN;
1369 req_set_path1 (req, pathname);
1370 req->int1 = flags;
1371 req->int2 = mode;
1372
1373 REQ_SEND;
1374}
1375
1376void
1377aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1378 ALIAS:
1379 aio_fsync = EIO_FSYNC
1380 aio_fdatasync = EIO_FDATASYNC
1381 aio_syncfs = EIO_SYNCFS
1382 PPCODE:
1383{
1384 int fd = s_fileno_croak (fh, 0);
1385 dREQ;
1386
1387 req->type = ix;
1388 req->sv1 = newSVsv (fh);
1389 req->int1 = fd;
1390
1391 REQ_SEND;
1392}
1393
1394void
1395aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1396 PPCODE:
1397{
1398 int fd = s_fileno_croak (fh, 0);
1399 dREQ;
1400
1401 req->type = EIO_SYNC_FILE_RANGE;
1402 req->sv1 = newSVsv (fh);
1403 req->int1 = fd;
1404 req->offs = offset;
638 res = sbytes; 1405 req->size = nbytes;
639 } 1406 req->int2 = flags;
640 1407
641# endif 1408 REQ_SEND;
1409}
1410
1411void
1412aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1413 PPCODE:
1414{
1415 int fd = s_fileno_croak (fh, 0);
1416 dREQ;
1417
1418 req->type = EIO_FALLOCATE;
1419 req->sv1 = newSVsv (fh);
1420 req->int1 = fd;
1421 req->int2 = mode;
1422 req->offs = offset;
1423 req->size = len;
1424
1425 REQ_SEND;
1426}
1427
1428void
1429aio_close (SV *fh, SV *callback = &PL_sv_undef)
1430 PPCODE:
1431{
1432 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1433 int fd = s_fileno_croak (fh, 0);
1434 dREQ;
1435
1436 if (expect_false (close_fd < 0))
1437 {
1438 int pipefd [2];
1439
1440 if (
1441#ifdef _WIN32
1442 _pipe (pipefd, 1, _O_BINARY) < 0
642#else 1443#else
643 res = -1; 1444 pipe (pipefd) < 0
644 errno = ENOSYS; 1445 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
645#endif 1446#endif
646 1447 || close (pipefd [1]) < 0
647 if (res < 0
648 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
649#if __solaris
650 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
651#endif
652 )
653 )
654 {
655 /* emulate sendfile. this is a major pain in the ass */
656 char buf[4096];
657 res = 0;
658
659 while (count)
660 {
661 ssize_t cnt;
662
663 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
664
665 if (cnt <= 0)
666 { 1448 )
667 if (cnt && !res) res = -1; 1449 abort (); /*D*/
668 break;
669 }
670 1450
671 cnt = write (ofd, buf, cnt); 1451 close_fd = pipefd [0];
672
673 if (cnt <= 0)
674 {
675 if (cnt && !res) res = -1;
676 break;
677 }
678
679 offset += cnt;
680 res += cnt;
681 count -= cnt;
682 }
683 }
684
685 return res;
686}
687
688/* read a full directory */
689static int scandir_ (const char *path, void **namesp)
690{
691 DIR *dirp = opendir (path);
692 union
693 {
694 struct dirent d;
695 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696 } u;
697 struct dirent *entp;
698 char *name, *names;
699 int memlen = 4096;
700 int memofs = 0;
701 int res = 0;
702 int errorno;
703
704 if (!dirp)
705 return -1;
706
707 names = malloc (memlen);
708
709 for (;;)
710 {
711 errno = 0, readdir_r (dirp, &u.d, &entp);
712
713 if (!entp)
714 break;
715
716 name = entp->d_name;
717
718 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
719 {
720 int len = strlen (name) + 1;
721
722 res++;
723
724 while (memofs + len > memlen)
725 {
726 memlen *= 2;
727 names = realloc (names, memlen);
728 if (!names)
729 break;
730 }
731
732 memcpy (names + memofs, name, len);
733 memofs += len;
734 }
735 }
736
737 errorno = errno;
738 closedir (dirp);
739
740 if (errorno)
741 {
742 free (names);
743 errno = errorno;
744 res = -1;
745 }
746
747 *namesp = (void *)names;
748 return res;
749}
750
751/*****************************************************************************/
752
753static void *aio_proc (void *thr_arg)
754{
755 aio_req req;
756 int type;
757
758 do
759 {
760 pthread_mutex_lock (&reqlock);
761
762 for (;;)
763 {
764 req = reqs;
765
766 if (reqs)
767 {
768 reqs = reqs->next;
769 if (!reqs) reqe = 0;
770 }
771
772 if (req)
773 break;
774
775 pthread_cond_wait (&reqwait, &reqlock);
776 }
777
778 pthread_mutex_unlock (&reqlock);
779
780 errno = 0; /* strictly unnecessary */
781
782 if (!req->cancelled)
783 switch (req->type)
784 {
785 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
786 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
787
788 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
789 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
790
791 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
792 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
793 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
794
795 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
796 case REQ_CLOSE: req->result = close (req->fd); break;
797 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
798 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
799 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
800 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
801 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
802
803 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
804 case REQ_FSYNC: req->result = fsync (req->fd); break;
805 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
806
807 case REQ_SLEEP:
808 {
809 struct timeval tv;
810
811 tv.tv_sec = req->fd;
812 tv.tv_usec = req->fd2;
813
814 req->result = select (0, 0, 0, 0, &tv);
815 }
816
817 case REQ_QUIT:
818 break;
819
820 default:
821 req->result = ENOSYS;
822 break;
823 } 1452 }
824 1453
825 req->errorno = errno; 1454 req->type = EIO_DUP2;
826 1455 req->int1 = close_fd;
827 pthread_mutex_lock (&reslock); 1456 req->sv2 = newSVsv (fh);
828
829 req->next = 0; 1457 req->int2 = fd;
830 1458
831 if (rese) 1459 REQ_SEND;
832 {
833 rese->next = req;
834 rese = req;
835 }
836 else
837 {
838 rese = ress = req;
839
840 /* write a dummy byte to the pipe so fh becomes ready */
841 write (respipe [1], &respipe, 1);
842 }
843
844 pthread_mutex_unlock (&reslock);
845 }
846 while (type != REQ_QUIT);
847
848 return 0;
849} 1460}
850 1461
851/*****************************************************************************/
852
853static void atfork_prepare (void)
854{
855 pthread_mutex_lock (&reqlock);
856 pthread_mutex_lock (&reslock);
857#if !HAVE_PREADWRITE
858 pthread_mutex_lock (&preadwritelock);
859#endif
860#if !HAVE_READDIR_R
861 pthread_mutex_lock (&readdirlock);
862#endif
863}
864
865static void atfork_parent (void)
866{
867#if !HAVE_READDIR_R
868 pthread_mutex_unlock (&readdirlock);
869#endif
870#if !HAVE_PREADWRITE
871 pthread_mutex_unlock (&preadwritelock);
872#endif
873 pthread_mutex_unlock (&reslock);
874 pthread_mutex_unlock (&reqlock);
875}
876
877static void atfork_child (void)
878{
879 aio_req prv;
880
881 started = 0;
882
883 while (reqs)
884 {
885 prv = reqs;
886 reqs = prv->next;
887 req_free (prv);
888 }
889
890 reqs = reqe = 0;
891
892 while (ress)
893 {
894 prv = ress;
895 ress = prv->next;
896 req_free (prv);
897 }
898
899 ress = rese = 0;
900
901 close (respipe [0]);
902 close (respipe [1]);
903 create_pipe ();
904
905 atfork_parent ();
906}
907
908#define dREQ \
909 aio_req req; \
910 \
911 if (SvOK (callback) && !SvROK (callback)) \
912 croak ("callback must be undef or of reference type"); \
913 \
914 Newz (0, req, 1, aio_cb); \
915 if (!req) \
916 croak ("out of memory during aio_req allocation"); \
917 \
918 req->callback = newSVsv (callback)
919
920#define REQ_SEND \
921 req_send (req); \
922 \
923 if (GIMME_V != G_VOID) \
924 XPUSHs (req_sv (req, AIO_REQ_KLASS));
925
926MODULE = IO::AIO PACKAGE = IO::AIO
927
928PROTOTYPES: ENABLE
929
930BOOT:
931{
932 HV *stash = gv_stashpv ("IO::AIO", 1);
933 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
936
937 create_pipe ();
938 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
939}
940
941void 1462void
942min_parallel (nthreads) 1463aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
943 int nthreads
944 PROTOTYPE: $
945
946void
947max_parallel (nthreads)
948 int nthreads
949 PROTOTYPE: $
950
951int
952max_outstanding (nreqs)
953 int nreqs
954 PROTOTYPE: $
955 CODE: 1464 PPCODE:
956 RETVAL = max_outstanding;
957 max_outstanding = nreqs;
958
959void
960aio_open (pathname,flags,mode,callback=&PL_sv_undef)
961 SV * pathname
962 int flags
963 int mode
964 SV * callback
965 PROTOTYPE: $$$;$
966 PPCODE:
967{ 1465{
1466 int fd = s_fileno_croak (fh, 0);
968 dREQ; 1467 dREQ;
969 1468
970 req->type = REQ_OPEN; 1469 req->type = EIO_SEEK;
971 req->data = newSVsv (pathname); 1470 req->sv1 = newSVsv (fh);
972 req->dataptr = SvPVbyte_nolen (req->data); 1471 req->int1 = fd;
973 req->fd = flags; 1472 req->offs = SvVAL64 (offset);
974 req->mode = mode; 1473 req->int2 = whence;
975 1474
976 REQ_SEND; 1475 REQ_SEND;
977} 1476}
978 1477
979void 1478void
980aio_close (fh,callback=&PL_sv_undef) 1479aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
981 SV * fh
982 SV * callback
983 PROTOTYPE: $;$
984 ALIAS: 1480 ALIAS:
985 aio_close = REQ_CLOSE
986 aio_fsync = REQ_FSYNC
987 aio_fdatasync = REQ_FDATASYNC
988 PPCODE:
989{
990 dREQ;
991
992 req->type = ix;
993 req->fh = newSVsv (fh);
994 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
995
996 REQ_SEND (req);
997}
998
999void
1000aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1001 SV * fh
1002 UV offset
1003 UV length
1004 SV * data
1005 UV dataoffset
1006 SV * callback
1007 ALIAS:
1008 aio_read = REQ_READ 1481 aio_read = EIO_READ
1009 aio_write = REQ_WRITE 1482 aio_write = EIO_WRITE
1010 PROTOTYPE: $$$$$;$
1011 PPCODE: 1483 PPCODE:
1012{ 1484{
1013 aio_req req;
1014 STRLEN svlen; 1485 STRLEN svlen;
1486 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1015 char *svptr = SvPVbyte (data, svlen); 1487 char *svptr = SvPVbyte (data, svlen);
1016 1488 UV len = SvUV (length);
1017 SvUPGRADE (data, SVt_PV);
1018 SvPOK_on (data);
1019 1489
1020 if (dataoffset < 0) 1490 if (dataoffset < 0)
1021 dataoffset += svlen; 1491 dataoffset += svlen;
1022 1492
1023 if (dataoffset < 0 || dataoffset > svlen) 1493 if (dataoffset < 0 || dataoffset > svlen)
1024 croak ("data offset outside of string"); 1494 croak ("dataoffset outside of data scalar");
1025 1495
1026 if (ix == REQ_WRITE) 1496 if (ix == EIO_WRITE)
1027 { 1497 {
1028 /* write: check length and adjust. */ 1498 /* write: check length and adjust. */
1029 if (length < 0 || length + dataoffset > svlen) 1499 if (!SvOK (length) || len + dataoffset > svlen)
1030 length = svlen - dataoffset; 1500 len = svlen - dataoffset;
1031 } 1501 }
1032 else 1502 else
1033 { 1503 {
1034 /* read: grow scalar as necessary */ 1504 /* read: check type and grow scalar as necessary */
1505 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1035 svptr = SvGROW (data, length + dataoffset); 1506 svptr = sv_grow (data, len + dataoffset + 1);
1507 else if (SvCUR (data) < len + dataoffset)
1508 croak ("length + dataoffset outside of scalar, and cannot grow");
1036 } 1509 }
1037
1038 if (length < 0)
1039 croak ("length must not be negative");
1040 1510
1041 { 1511 {
1042 dREQ; 1512 dREQ;
1043 1513
1044 req->type = ix; 1514 req->type = ix;
1045 req->fh = newSVsv (fh); 1515 req->sv1 = newSVsv (fh);
1046 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1516 req->int1 = fd;
1047 : IoOFP (sv_2io (fh))); 1517 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1048 req->offset = offset; 1518 req->size = len;
1049 req->length = length;
1050 req->data = SvREFCNT_inc (data); 1519 req->sv2 = SvREFCNT_inc (data);
1051 req->dataptr = (char *)svptr + dataoffset; 1520 req->ptr2 = (char *)svptr + dataoffset;
1521 req->stroffset = dataoffset;
1052 1522
1053 if (!SvREADONLY (data)) 1523 if (!SvREADONLY (data))
1054 { 1524 {
1055 SvREADONLY_on (data); 1525 SvREADONLY_on (data);
1056 req->data2ptr = (void *)data; 1526 req->flags |= FLAG_SV2_RO_OFF;
1057 } 1527 }
1058 1528
1059 REQ_SEND; 1529 REQ_SEND;
1060 } 1530 }
1061} 1531}
1062 1532
1063void 1533void
1064aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1534aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1065 SV * out_fh 1535 ALIAS:
1066 SV * in_fh 1536 aio_ioctl = EIO_IOCTL
1067 UV in_offset 1537 aio_fcntl = EIO_FCNTL
1068 UV length
1069 SV * callback
1070 PROTOTYPE: $$$$;$
1071 PPCODE: 1538 PPCODE:
1072{ 1539{
1073 dREQ; 1540 int fd = s_fileno_croak (fh, 0);
1541 char *svptr;
1074 1542
1075 req->type = REQ_SENDFILE; 1543 if (SvPOK (arg) || !SvNIOK (arg))
1076 req->fh = newSVsv (out_fh);
1077 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1078 req->fh2 = newSVsv (in_fh);
1079 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1080 req->offset = in_offset;
1081 req->length = length;
1082
1083 REQ_SEND;
1084}
1085
1086void
1087aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1088 SV * fh
1089 UV offset
1090 IV length
1091 SV * callback
1092 PROTOTYPE: $$$;$
1093 PPCODE:
1094{
1095 dREQ;
1096
1097 req->type = REQ_READAHEAD;
1098 req->fh = newSVsv (fh);
1099 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1100 req->offset = offset;
1101 req->length = length;
1102
1103 REQ_SEND;
1104}
1105
1106void
1107aio_stat (fh_or_path,callback=&PL_sv_undef)
1108 SV * fh_or_path
1109 SV * callback
1110 ALIAS:
1111 aio_stat = REQ_STAT
1112 aio_lstat = REQ_LSTAT
1113 PPCODE:
1114{
1115 dREQ;
1116
1117 New (0, req->statdata, 1, Stat_t);
1118 if (!req->statdata)
1119 { 1544 {
1120 req_free (req); 1545 STRLEN svlen;
1121 croak ("out of memory during aio_req->statdata allocation"); 1546 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1122 } 1547#ifdef IOCPARM_LEN
1548 STRLEN need = IOCPARM_LEN (request);
1549#else
1550 STRLEN need = 256;
1551#endif
1123 1552
1124 if (SvPOK (fh_or_path)) 1553 if (svlen < need)
1125 { 1554 svptr = SvGROW (arg, need);
1126 req->type = ix;
1127 req->data = newSVsv (fh_or_path);
1128 req->dataptr = SvPVbyte_nolen (req->data);
1129 } 1555 }
1130 else 1556 else
1557 svptr = (char *)SvIV (arg);
1558
1131 { 1559 {
1560 dREQ;
1561
1132 req->type = REQ_FSTAT; 1562 req->type = ix;
1133 req->fh = newSVsv (fh_or_path); 1563 req->sv1 = newSVsv (fh);
1134 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1564 req->int1 = fd;
1565 req->int2 = (long)request;
1566 req->sv2 = SvREFCNT_inc (arg);
1567 req->ptr2 = svptr;
1568
1569 REQ_SEND;
1135 } 1570 }
1571}
1572
1573void
1574aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1575 ALIAS:
1576 aio_readlink = EIO_READLINK
1577 aio_realpath = EIO_REALPATH
1578 PPCODE:
1579{
1580 dREQ;
1581
1582 req->type = ix;
1583 req_set_path1 (req, pathname);
1136 1584
1137 REQ_SEND; 1585 REQ_SEND;
1138} 1586}
1139 1587
1140void 1588void
1141aio_unlink (pathname,callback=&PL_sv_undef) 1589aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1142 SV * pathname 1590 PPCODE:
1143 SV * callback 1591{
1592 int ifd = s_fileno_croak (in_fh , 0);
1593 int ofd = s_fileno_croak (out_fh, 1);
1594 dREQ;
1595
1596 req->type = EIO_SENDFILE;
1597 req->sv1 = newSVsv (out_fh);
1598 req->int1 = ofd;
1599 req->sv2 = newSVsv (in_fh);
1600 req->int2 = ifd;
1601 req->offs = in_offset;
1602 req->size = length;
1603
1604 REQ_SEND;
1605}
1606
1607void
1608aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1609 PPCODE:
1610{
1611 int fd = s_fileno_croak (fh, 0);
1612 dREQ;
1613
1614 req->type = EIO_READAHEAD;
1615 req->sv1 = newSVsv (fh);
1616 req->int1 = fd;
1617 req->offs = offset;
1618 req->size = length;
1619
1620 REQ_SEND;
1621}
1622
1623void
1624aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1144 ALIAS: 1625 ALIAS:
1626 aio_stat = EIO_STAT
1627 aio_lstat = EIO_LSTAT
1628 aio_statvfs = EIO_STATVFS
1629 PPCODE:
1630{
1631 dREQ;
1632
1633 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1634
1635 REQ_SEND;
1636}
1637
1638void
1639st_xtime ()
1640 ALIAS:
1641 st_atime = 1
1642 st_mtime = 2
1643 st_ctime = 4
1644 st_xtime = 7
1645 PPCODE:
1646 EXTEND (SP, 3);
1647 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1648 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1649 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1650
1651void
1652st_xtimensec ()
1653 ALIAS:
1654 st_atimensec = 1
1655 st_mtimensec = 2
1656 st_ctimensec = 4
1657 st_xtimensec = 7
1658 PPCODE:
1659 EXTEND (SP, 3);
1660 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1661 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1662 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1663
1664UV
1665major (UV dev)
1666 ALIAS:
1667 minor = 1
1668 CODE:
1669 RETVAL = ix ? minor (dev) : major (dev);
1670 OUTPUT:
1671 RETVAL
1672
1673UV
1674makedev (UV maj, UV min)
1675 CODE:
1676 RETVAL = makedev (maj, min);
1677 OUTPUT:
1678 RETVAL
1679
1680void
1681aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1682 PPCODE:
1683{
1684 dREQ;
1685
1686 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1687 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1688 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1689
1690 REQ_SEND;
1691}
1692
1693void
1694aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1695 PPCODE:
1696{
1697 dREQ;
1698
1699 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1700 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1701
1702 REQ_SEND;
1703}
1704
1705void
1706aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1707 PPCODE:
1708{
1709 dREQ;
1710
1711 req->int2 = mode;
1712 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1713
1714 REQ_SEND;
1715}
1716
1717void
1718aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1719 PPCODE:
1720{
1721 dREQ;
1722
1723 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1724 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1725 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1726
1727 REQ_SEND;
1728}
1729
1730void
1731aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1732 PPCODE:
1733{
1734 dREQ;
1735
1736 req->type = EIO_READDIR;
1737 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1738
1739 if (flags & EIO_READDIR_DENTS)
1740 req->int1 |= EIO_READDIR_CUSTOM2;
1741
1742 req_set_path1 (req, pathname);
1743
1744 REQ_SEND;
1745}
1746
1747void
1748aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1749 PPCODE:
1750{
1751 dREQ;
1752
1753 req->type = EIO_MKDIR;
1754 req->int2 = mode;
1755 req_set_path1 (req, pathname);
1756
1757 REQ_SEND;
1758}
1759
1760void
1761aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1762 ALIAS:
1145 aio_unlink = REQ_UNLINK 1763 aio_unlink = EIO_UNLINK
1146 aio_rmdir = REQ_RMDIR 1764 aio_rmdir = EIO_RMDIR
1147 aio_readdir = REQ_READDIR 1765 aio_readdir = EIO_READDIR
1148 PPCODE: 1766 PPCODE:
1149{ 1767{
1150 dREQ; 1768 dREQ;
1151 1769
1152 req->type = ix; 1770 req->type = ix;
1153 req->data = newSVsv (pathname); 1771 req_set_path1 (req, pathname);
1154 req->dataptr = SvPVbyte_nolen (req->data); 1772
1155
1156 REQ_SEND; 1773 REQ_SEND;
1157} 1774}
1158 1775
1159void 1776void
1160aio_link (oldpath,newpath,callback=&PL_sv_undef) 1777aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1161 SV * oldpath
1162 SV * newpath
1163 SV * callback
1164 ALIAS: 1778 ALIAS:
1165 aio_link = REQ_LINK 1779 aio_link = EIO_LINK
1166 aio_symlink = REQ_SYMLINK 1780 aio_symlink = EIO_SYMLINK
1167 aio_rename = REQ_RENAME 1781 aio_rename = EIO_RENAME
1168 PPCODE: 1782 PPCODE:
1169{ 1783{
1784 eio_wd wd2 = 0;
1170 dREQ; 1785 dREQ;
1171 1786
1172 req->type = ix; 1787 req->type = ix;
1173 req->fh = newSVsv (oldpath); 1788 req_set_path1 (req, oldpath);
1174 req->data2ptr = SvPVbyte_nolen (req->fh); 1789 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1175 req->data = newSVsv (newpath); 1790 req->int3 = (long)wd2;
1176 req->dataptr = SvPVbyte_nolen (req->data);
1177 1791
1178 REQ_SEND; 1792 REQ_SEND;
1179} 1793}
1180 1794
1181void 1795void
1182aio_sleep (delay,callback=&PL_sv_undef) 1796aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1183 double delay
1184 SV * callback
1185 PPCODE: 1797 PPCODE:
1186{ 1798{
1799 eio_wd wd2 = 0;
1187 dREQ; 1800 dREQ;
1188 1801
1189 req->type = REQ_SLEEP; 1802 req->type = EIO_RENAME;
1190 req->fd = delay < 0. ? 0 : delay; 1803 req_set_path1 (req, oldpath);
1191 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1804 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1192 1805 req->int2 = flags;
1806 req->int3 = (long)wd2;
1807
1193 REQ_SEND; 1808 REQ_SEND;
1194} 1809}
1195 1810
1196void 1811void
1197aio_group (callback=&PL_sv_undef) 1812aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1198 SV * callback 1813 PPCODE:
1199 PROTOTYPE: ;$ 1814{
1815 dREQ;
1816
1817 req->type = EIO_MKNOD;
1818 req->int2 = (mode_t)mode;
1819 req->offs = dev;
1820 req_set_path1 (req, pathname);
1821
1822 REQ_SEND;
1823}
1824
1825void
1826aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1827 ALIAS:
1828 aio_mtouch = EIO_MTOUCH
1829 aio_msync = EIO_MSYNC
1200 PPCODE: 1830 PPCODE:
1201{ 1831{
1832 STRLEN svlen;
1833 char *svptr = SvPVbyte (data, svlen);
1834 UV len = SvUV (length);
1835
1836 if (flags < 0)
1837 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1838
1839 if (offset < 0)
1840 offset += svlen;
1841
1842 if (offset < 0 || offset > svlen)
1843 croak ("offset outside of scalar");
1844
1845 if (!SvOK (length) || len + offset > svlen)
1846 len = svlen - offset;
1847
1848 {
1849 dREQ;
1850
1851 req->type = ix;
1852 req->sv2 = SvREFCNT_inc (data);
1853 req->ptr2 = (char *)svptr + offset;
1854 req->size = len;
1855 req->int1 = flags;
1856
1857 REQ_SEND;
1858 }
1859}
1860
1861void
1862aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1863 PPCODE:
1864{
1865 STRLEN svlen;
1866 char *svptr = SvPVbyte (data, svlen);
1867 UV len = SvUV (length);
1868
1869 if (offset < 0)
1870 offset += svlen;
1871
1872 if (offset < 0 || offset > svlen)
1873 croak ("offset outside of scalar");
1874
1875 if (!SvOK (length) || len + offset > svlen)
1876 len = svlen - offset;
1877
1878 {
1879 dREQ;
1880
1881 req->type = EIO_MLOCK;
1882 req->sv2 = SvREFCNT_inc (data);
1883 req->ptr2 = (char *)svptr + offset;
1884 req->size = len;
1885
1886 REQ_SEND;
1887 }
1888}
1889
1890void
1891aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1892 PPCODE:
1893{
1894 dREQ;
1895
1896 req->type = EIO_MLOCKALL;
1897 req->int1 = flags;
1898
1899 REQ_SEND;
1900}
1901
1902void
1903aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1904 PPCODE:
1905{
1906 int fd = s_fileno_croak (fh, 0);
1202 dREQ; 1907 dREQ;
1908
1909 req->type = EIO_CUSTOM;
1910 req->sv1 = newSVsv (fh);
1911 req->int1 = fd;
1912
1913 req->feed = fiemap;
1914#if HAVE_FIEMAP
1915 /* keep our fingers crossed that the next two types are 64 bit */
1916 req->offs = start;
1917 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1918 req->int2 = flags;
1919 req->int3 = SvOK (count) ? SvIV (count) : -1;
1920#endif
1921
1922 REQ_SEND;
1923}
1924
1925void
1926aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1927 PPCODE:
1928{
1929 char *svptr = 0;
1930
1931 sv_clear_foreign (data);
1932
1933 if (length) /* known length, directly read into scalar */
1934 {
1935 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1936 svptr = sv_grow (data, length + 1);
1937 else if (SvCUR (data) < length)
1938 croak ("length outside of scalar, and cannot grow");
1939 else
1940 svptr = SvPVbyte_nolen (data);
1941 }
1942
1943 {
1944 dREQ;
1945
1946 req->type = EIO_SLURP;
1947 req_set_path1 (req, pathname);
1948 req->offs = offset;
1949 req->size = length;
1950 req->sv2 = SvREFCNT_inc (data);
1951 req->ptr2 = svptr;
1952
1953 if (!SvREADONLY (data))
1954 {
1955 SvREADONLY_on (data);
1956 req->flags |= FLAG_SV2_RO_OFF;
1957 }
1958
1959 REQ_SEND;
1960 }
1961}
1962
1963void
1964aio_busy (double delay, SV *callback = &PL_sv_undef)
1965 PPCODE:
1966{
1967 dREQ;
1968
1969 req->type = EIO_BUSY;
1970 req->nv1 = delay < 0. ? 0. : delay;
1971
1972 REQ_SEND;
1973}
1974
1975void
1976aio_group (SV *callback = &PL_sv_undef)
1977 PPCODE:
1978{
1979 dREQ;
1980
1203 req->type = REQ_GROUP; 1981 req->type = EIO_GROUP;
1982
1983 PUTBACK;
1204 req_send (req); 1984 req_submit (req);
1985 SPAGAIN;
1986
1205 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1987 XPUSHs (req_sv (req, aio_grp_stash));
1206} 1988}
1989
1990void
1991aio_nop (SV *callback = &PL_sv_undef)
1992 ALIAS:
1993 aio_nop = EIO_NOP
1994 aio_sync = EIO_SYNC
1995 PPCODE:
1996{
1997 dREQ;
1998
1999 req->type = ix;
2000
2001 REQ_SEND;
2002}
2003
2004int
2005aioreq_pri (int pri = NO_INIT)
2006 CODE:
2007 RETVAL = next_pri;
2008 if (items > 0)
2009 {
2010 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2011 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2012 next_pri = pri;
2013 }
2014 OUTPUT:
2015 RETVAL
2016
2017void
2018aioreq_nice (int nice = 0)
2019 CODE:
2020 nice = next_pri - nice;
2021 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2022 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2023 next_pri = nice;
1207 2024
1208void 2025void
1209flush () 2026flush ()
1210 PROTOTYPE:
1211 CODE: 2027 CODE:
1212 while (nreqs) 2028 while (eio_nreqs ())
1213 { 2029 {
1214 poll_wait (); 2030 poll_wait ();
1215 poll_cb (); 2031 poll_cb ();
1216 } 2032 }
1217 2033
1218void 2034int
1219poll() 2035poll ()
1220 PROTOTYPE:
1221 CODE: 2036 CODE:
1222 if (nreqs)
1223 {
1224 poll_wait (); 2037 poll_wait ();
1225 poll_cb (); 2038 RETVAL = poll_cb ();
1226 }
1227
1228int
1229poll_fileno()
1230 PROTOTYPE:
1231 CODE:
1232 RETVAL = respipe [0];
1233 OUTPUT: 2039 OUTPUT:
1234 RETVAL 2040 RETVAL
1235 2041
1236int 2042int
2043poll_fileno ()
2044 CODE:
2045 RETVAL = s_epipe_fd (&respipe);
2046 OUTPUT:
2047 RETVAL
2048
2049int
1237poll_cb(...) 2050poll_cb (...)
1238 PROTOTYPE: 2051 PROTOTYPE:
1239 CODE: 2052 CODE:
1240 RETVAL = poll_cb (); 2053 RETVAL = poll_cb ();
1241 OUTPUT: 2054 OUTPUT:
1242 RETVAL 2055 RETVAL
1243 2056
1244void 2057void
1245poll_wait() 2058poll_wait ()
1246 PROTOTYPE:
1247 CODE: 2059 CODE:
1248 if (nreqs)
1249 poll_wait (); 2060 poll_wait ();
1250 2061
1251int 2062int
1252nreqs() 2063nreqs ()
1253 PROTOTYPE:
1254 CODE: 2064 CODE:
1255 RETVAL = nreqs; 2065 RETVAL = eio_nreqs ();
1256 OUTPUT: 2066 OUTPUT:
1257 RETVAL 2067 RETVAL
1258 2068
2069int
2070nready ()
2071 CODE:
2072 RETVAL = eio_nready ();
2073 OUTPUT:
2074 RETVAL
2075
2076int
2077npending ()
2078 CODE:
2079 RETVAL = eio_npending ();
2080 OUTPUT:
2081 RETVAL
2082
2083int
2084nthreads ()
2085 CODE:
2086 RETVAL = eio_nthreads ();
2087 OUTPUT:
2088 RETVAL
2089
2090int
2091fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2092 CODE:
2093 RETVAL = posix_fadvise (fh, offset, length, advice);
2094 OUTPUT:
2095 RETVAL
2096
2097IV
2098sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2099 CODE:
2100 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2101 OUTPUT:
2102 RETVAL
2103
2104void
2105mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2106 PPCODE:
2107 sv_clear_foreign (scalar);
2108{
2109 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2110 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2111 if (addr == (void *)-1)
2112 XSRETURN_NO;
2113
2114 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2115
2116 if (!(prot & PROT_WRITE))
2117 SvREADONLY_on (scalar);
2118
2119 XSRETURN_YES;
2120}
2121
2122void
2123munmap (SV *scalar)
2124 CODE:
2125 sv_clear_foreign (scalar);
2126
2127SV *
2128mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2129 CODE:
2130{
2131 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2132 void *new;
2133
2134 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2135 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2136
2137 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2138
2139 RETVAL = &PL_sv_no;
2140
2141 if (new != (void *)-1)
2142 {
2143 RETVAL = new == (void *)mg->mg_ptr
2144 ? newSVpvn ("0 but true", 10)
2145 : &PL_sv_yes;
2146
2147 mg->mg_ptr = (char *)new;
2148 mg->mg_obj = (SV *)new_length;
2149
2150 SvPVX (scalar) = mg->mg_ptr;
2151 SvCUR_set (scalar, new_length);
2152 }
2153}
2154 OUTPUT:
2155 RETVAL
2156
2157int
2158madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2159 ALIAS:
2160 mprotect = 1
2161 CODE:
2162{
2163 STRLEN svlen;
2164 void *addr = SvPVbyte (scalar, svlen);
2165 STRLEN len = SvUV (length);
2166
2167 if (offset < 0)
2168 offset += svlen;
2169
2170 if (offset < 0 || offset > svlen)
2171 croak ("offset outside of scalar");
2172
2173 if (!SvOK (length) || len + offset > svlen)
2174 len = svlen - offset;
2175
2176 addr = (void *)(((intptr_t)addr) + offset);
2177 eio_page_align (&addr, &len);
2178
2179 switch (ix)
2180 {
2181 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2182 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2183 }
2184}
2185 OUTPUT:
2186 RETVAL
2187
2188int
2189munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2190 CODE:
2191{
2192 STRLEN svlen;
2193 void *addr = SvPVbyte (scalar, svlen);
2194 size_t len = SvUV (length);
2195
2196 if (offset < 0)
2197 offset += svlen;
2198
2199 if (offset < 0 || offset > svlen)
2200 croak ("offset outside of scalar");
2201
2202 if (!SvOK (length) || len + offset > svlen)
2203 len = svlen - offset;
2204
2205 addr = (void *)(((intptr_t)addr) + offset);
2206 eio_page_align (&addr, &len);
2207#if _POSIX_MEMLOCK_RANGE
2208 RETVAL = munlock (addr, len);
2209#else
2210 RETVAL = EIO_ENOSYS ();
2211#endif
2212}
2213 OUTPUT:
2214 RETVAL
2215
2216int
2217munlockall ()
2218 CODE:
2219#if _POSIX_MEMLOCK
2220 munlockall ();
2221#else
2222 RETVAL = EIO_ENOSYS ();
2223#endif
2224 OUTPUT:
2225 RETVAL
2226
2227int
2228splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2229 CODE:
2230{
2231#if HAVE_LINUX_SPLICE
2232 loff_t off_in_, off_out_;
2233 RETVAL = splice (
2234 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2235 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2236 length, flags
2237 );
2238#else
2239 RETVAL = EIO_ENOSYS ();
2240#endif
2241}
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2247 CODE:
2248#if HAVE_LINUX_SPLICE
2249 RETVAL = tee (rfh, wfh, length, flags);
2250#else
2251 RETVAL = EIO_ENOSYS ();
2252#endif
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257pipesize (aio_rfd rfh, int new_size = -1)
2258 PROTOTYPE: $;$
2259 CODE:
2260#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2261 if (new_size >= 0)
2262 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2263 else
2264 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2265#else
2266 errno = ENOSYS;
2267 RETVAL = -1;
2268#endif
2269 OUTPUT:
2270 RETVAL
2271
2272void
2273pipe2 (int flags = 0)
2274 PROTOTYPE: ;$
2275 PPCODE:
2276{
2277 int fd[2];
2278 int res;
2279
2280 if (flags)
2281#if HAVE_PIPE2
2282 res = pipe2 (fd, flags);
2283#else
2284 res = (errno = ENOSYS, -1);
2285#endif
2286 else
2287 res = pipe (fd);
2288
2289 if (!res)
2290 {
2291 EXTEND (SP, 2);
2292 PUSHs (newmortalFH (fd[0], O_RDONLY));
2293 PUSHs (newmortalFH (fd[1], O_WRONLY));
2294 }
2295}
2296
2297void
2298eventfd (unsigned int initval = 0, int flags = 0)
2299 PPCODE:
2300{
2301 int fd;
2302#if HAVE_EVENTFD
2303 fd = eventfd (initval, flags);
2304#else
2305 fd = (errno = ENOSYS, -1);
2306#endif
2307
2308 XPUSHs (newmortalFH (fd, O_RDWR));
2309}
2310
2311void
2312timerfd_create (int clockid, int flags = 0)
2313 PPCODE:
2314{
2315 int fd;
2316#if HAVE_TIMERFD
2317 fd = timerfd_create (clockid, flags);
2318#else
2319 fd = (errno = ENOSYS, -1);
2320#endif
2321
2322 XPUSHs (newmortalFH (fd, O_RDWR));
2323}
2324
2325void
2326timerfd_settime (SV *fh, int flags, NV interval, NV value)
2327 PPCODE:
2328{
2329 int fd = s_fileno_croak (fh, 0);
2330#if HAVE_TIMERFD
2331 int res;
2332 struct itimerspec its, ots;
2333
2334 ts_set (&its.it_interval, interval);
2335 ts_set (&its.it_value , value);
2336 res = timerfd_settime (fd, flags, &its, &ots);
2337
2338 if (!res)
2339 {
2340 EXTEND (SP, 2);
2341 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2342 PUSHs (newSVnv (ts_get (&ots.it_value)));
2343 }
2344#else
2345 errno = ENOSYS;
2346#endif
2347}
2348
2349void
2350timerfd_gettime (SV *fh)
2351 PPCODE:
2352{
2353 int fd = s_fileno_croak (fh, 0);
2354#if HAVE_TIMERFD
2355 int res;
2356 struct itimerspec ots;
2357 res = timerfd_gettime (fd, &ots);
2358
2359 if (!res)
2360 {
2361 EXTEND (SP, 2);
2362 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2363 PUSHs (newSVnv (ts_get (&ots.it_value)));
2364 }
2365#else
2366 errno = ENOSYS;
2367#endif
2368}
2369
2370UV
2371get_fdlimit ()
2372 CODE:
2373#if HAVE_RLIMITS
2374 struct rlimit rl;
2375 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2376 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2377#endif
2378 XSRETURN_UNDEF;
2379 OUTPUT:
2380 RETVAL
2381
2382void
2383min_fdlimit (UV limit = 0x7fffffffU)
2384 CODE:
2385{
2386#if HAVE_RLIMITS
2387 struct rlimit rl;
2388 rlim_t orig_rlim_max;
2389 UV bit;
2390
2391 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2392 goto fail;
2393
2394 if (rl.rlim_cur == RLIM_INFINITY)
2395 XSRETURN_YES;
2396
2397 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2398
2399 if (rl.rlim_cur < limit)
2400 {
2401 rl.rlim_cur = limit;
2402
2403 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2404 rl.rlim_max = rl.rlim_cur;
2405 }
2406
2407 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2408 XSRETURN_YES;
2409
2410 if (errno == EPERM)
2411 {
2412 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2413 /* our limit overflows a system-wide limit */
2414 /* try an adaptive algorithm, but do not lower the hardlimit */
2415 rl.rlim_max = 0;
2416 for (bit = 0x40000000U; bit; bit >>= 1)
2417 {
2418 rl.rlim_max |= bit;
2419 rl.rlim_cur = rl.rlim_max;
2420
2421 /* nevr decrease the hard limit */
2422 if (rl.rlim_max < orig_rlim_max)
2423 break;
2424
2425 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2426 rl.rlim_max &= ~bit; /* too high, remove bit again */
2427 }
2428
2429 /* now, raise the soft limit to the max permitted */
2430 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2431 {
2432 rl.rlim_cur = rl.rlim_max;
2433 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2434 errno = EPERM;
2435 }
2436 }
2437#endif
2438 fail:
2439 XSRETURN_UNDEF;
2440}
2441
2442void _on_next_submit (SV *cb)
2443 CODE:
2444 SvREFCNT_dec (on_next_submit);
2445 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2446
1259PROTOTYPES: DISABLE 2447PROTOTYPES: DISABLE
1260 2448
2449MODULE = IO::AIO PACKAGE = IO::AIO::WD
2450
2451BOOT:
2452{
2453 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2454 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2455}
2456
2457void
2458DESTROY (SV *self)
2459 CODE:
2460{
2461 aio_wd wd = SvAIO_WD (self);
2462#if HAVE_AT
2463 {
2464 SV *callback = &PL_sv_undef;
2465 dREQ; /* clobbers next_pri :/ */
2466 next_pri = req->pri; /* restore next_pri */
2467 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2468 req->type = EIO_WD_CLOSE;
2469 req->wd = wd;
2470 REQ_SEND;
2471 }
2472#else
2473 eio_wd_close_sync (wd);
2474#endif
2475}
2476
1261MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2477MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262 2478
1263void 2479void
1264cancel (aio_req_ornot req) 2480cancel (aio_req_ornot req)
1265 PROTOTYPE:
1266 CODE: 2481 CODE:
1267 req_cancel (req); 2482 eio_cancel (req);
2483
2484void
2485cb (aio_req_ornot req, SV *callback = NO_INIT)
2486 PPCODE:
2487{
2488 if (GIMME_V != G_VOID)
2489 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2490
2491 if (items > 1)
2492 {
2493 SV *cb_cv = get_cb (callback);
2494
2495 SvREFCNT_dec (req->callback);
2496 req->callback = SvREFCNT_inc (cb_cv);
2497 }
2498}
1268 2499
1269MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2500MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270 2501
1271void 2502void
1272add (aio_req grp, ...) 2503add (aio_req grp, ...)
1273 PPCODE: 2504 PPCODE:
1274{ 2505{
1275 int i; 2506 int i;
1276 2507
1277 if (grp->fd == 2) 2508 if (grp->int1 == 2)
1278 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2509 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279 2510
1280 for (i = 1; i < items; ++i ) 2511 for (i = 1; i < items; ++i )
1281 { 2512 {
2513 aio_req req;
2514
1282 if (GIMME_V != G_VOID) 2515 if (GIMME_V != G_VOID)
1283 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2516 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284 2517
1285 aio_req req = SvAIO_REQ (ST (i)); 2518 req = SvAIO_REQ (ST (i));
1286 2519
1287 if (req) 2520 if (req)
1288 { 2521 eio_grp_add (grp, req);
1289 ++grp->length;
1290 req->grp = grp;
1291
1292 req->grp_prev = 0;
1293 req->grp_next = grp->grp_first;
1294
1295 if (grp->grp_first)
1296 grp->grp_first->grp_prev = req;
1297
1298 grp->grp_first = req;
1299 }
1300 } 2522 }
1301} 2523}
1302 2524
1303void 2525void
2526cancel_subs (aio_req_ornot req)
2527 CODE:
2528 req_cancel_subs (req);
2529
2530void
1304result (aio_req grp, ...) 2531result (aio_req grp, ...)
2532 CODE:
2533{
2534 int i;
2535 AV *av;
2536
2537 grp->errorno = errno;
2538
2539 av = newAV ();
2540 av_extend (av, items - 1);
2541
2542 for (i = 1; i < items; ++i )
2543 av_push (av, newSVsv (ST (i)));
2544
2545 SvREFCNT_dec (grp->sv1);
2546 grp->sv1 = (SV *)av;
2547}
2548
2549void
2550errno (aio_req grp, int errorno = errno)
2551 CODE:
2552 grp->errorno = errorno;
2553
2554void
2555limit (aio_req grp, int limit)
1305 CODE: 2556 CODE:
1306{ 2557 eio_grp_limit (grp, limit);
1307 int i;
1308 AV *av = newAV ();
1309 2558
1310 for (i = 1; i < items; ++i )
1311 av_push (av, newSVsv (ST (i)));
1312
1313 SvREFCNT_dec (grp->data);
1314 grp->data = (SV *)av;
1315}
1316
1317void 2559void
1318feeder_limit (aio_req grp, int limit) 2560feed (aio_req grp, SV *callback = &PL_sv_undef)
1319 CODE: 2561 CODE:
1320 grp->fd2 = limit;
1321 aio_grp_feed (grp);
1322
1323void
1324set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1325 CODE:
1326{ 2562{
1327 SvREFCNT_dec (grp->fh2); 2563 SvREFCNT_dec (grp->sv2);
1328 grp->fh2 = newSVsv (callback); 2564 grp->sv2 = newSVsv (callback);
2565 grp->feed = aio_grp_feed;
1329 2566
1330 if (grp->fd2 <= 0) 2567 if (grp->int2 <= 0)
1331 grp->fd2 = 2; 2568 grp->int2 = 2;
1332 2569
1333 aio_grp_feed (grp); 2570 eio_grp_limit (grp, grp->int2);
1334} 2571}
1335 2572

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