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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.50 by root, Sun Oct 22 21:13:47 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_invoke (aio_req req); 419static void req_cancel (aio_req req);
107static void req_free (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}
108 434
109/* must be called at most once */ 435/* must be called at most once */
110static SV *req_sv (aio_req req, const char *klass) 436static SV *
437req_sv (aio_req req, HV *stash)
111{ 438{
112 if (!req->self) 439 if (!req->self)
113 { 440 {
114 req->self = (SV *)newHV (); 441 req->self = (SV *)newHV ();
115 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 442 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116 } 443 }
117 444
118 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 445 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119} 446}
120 447
121static aio_req SvAIO_REQ (SV *sv) 448static SV *
449newSVaio_wd (aio_wd wd)
122{ 450{
123 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")))
124 croak ("object of class " AIO_REQ_KLASS " expected"); 464 croak ("object of class IO::AIO::REQ expected");
125 465
126 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 466 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127 467
128 return mg ? (aio_req)mg->mg_ptr : 0; 468 return mg ? (aio_req)mg->mg_ptr : 0;
129} 469}
130 470
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
131static void aio_grp_feed (aio_req grp) 508aio_grp_feed (aio_req grp)
132{ 509{
133 while (grp->length < grp->fd2) 510 if (grp->sv2 && SvOK (grp->sv2))
134 { 511 {
135 int old_len = grp->length; 512 dSP;
136 513
137 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))
138 { 563 {
139 dSP; 564 sv_result = sv_result_cache; sv_result_cache = 0;
140 565 SvIV_set (sv_result, req->result);
141 ENTER; 566 SvIOK_only (sv_result);
142 SAVETMPS;
143 PUSHMARK (SP);
144 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145 PUTBACK;
146 call_sv (grp->fh2, G_VOID | G_EVAL);
147 SPAGAIN;
148 FREETMPS;
149 LEAVE;
150 } 567 }
151 568 else
152 /* stop if no progress has been made */
153 if (old_len == grp->length)
154 { 569 {
155 SvREFCNT_dec (grp->fh2); 570 sv_result = newSViv (req->result);
156 grp->fh2 = 0; 571 SvREADONLY_on (sv_result);
157 break;
158 } 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;
159 } 821 }
160}
161 822
162static void aio_grp_dec (aio_req grp) 823 return !!SvTRUE (ERRSV);
163{
164 --grp->length;
165
166 /* call feeder, if applicable */
167 aio_grp_feed (grp);
168
169 /* finish, if done */
170 if (!grp->length && grp->fd)
171 {
172 req_invoke (grp);
173 req_free (grp);
174 }
175} 824}
176 825
177static void poll_wait () 826static void
827req_destroy (aio_req req)
178{ 828{
179 if (nreqs && !ress)
180 {
181 fd_set rfd;
182 FD_ZERO(&rfd);
183 FD_SET(respipe [0], &rfd);
184
185 select (respipe [0] + 1, &rfd, 0, 0, 0);
186 }
187}
188
189static void req_invoke (aio_req req)
190{
191 dSP;
192 int errorno = errno;
193
194 if (req->cancelled || !SvOK (req->callback))
195 return;
196
197 errno = req->errorno;
198
199 ENTER;
200 SAVETMPS;
201 PUSHMARK (SP);
202 EXTEND (SP, 1);
203
204 switch (req->type)
205 {
206 case REQ_READDIR:
207 {
208 SV *rv = &PL_sv_undef;
209
210 if (req->result >= 0)
211 {
212 char *buf = req->data2ptr;
213 AV *av = newAV ();
214
215 while (req->result)
216 {
217 SV *sv = newSVpv (buf, 0);
218
219 av_push (av, sv);
220 buf += SvCUR (sv) + 1;
221 req->result--;
222 }
223
224 rv = sv_2mortal (newRV_noinc ((SV *)av));
225 }
226
227 PUSHs (rv);
228 }
229 break;
230
231 case REQ_OPEN:
232 {
233 /* convert fd to fh */
234 SV *fh;
235
236 PUSHs (sv_2mortal (newSViv (req->result)));
237 PUTBACK;
238 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
239 SPAGAIN;
240
241 fh = SvREFCNT_inc (POPs);
242
243 PUSHMARK (SP);
244 XPUSHs (sv_2mortal (fh));
245 }
246 break;
247
248 case REQ_GROUP:
249 req->fd = 2; /* mark group as finished */
250
251 if (req->data)
252 {
253 int i;
254 AV *av = (AV *)req->data;
255
256 EXTEND (SP, AvFILL (av) + 1);
257 for (i = 0; i <= AvFILL (av); ++i)
258 PUSHs (*av_fetch (av, i, 0));
259 }
260 break;
261
262 case REQ_SLEEP:
263 break;
264
265 default:
266 PUSHs (sv_2mortal (newSViv (req->result)));
267 break;
268 }
269
270
271 PUTBACK;
272 call_sv (req->callback, G_VOID | G_EVAL);
273 SPAGAIN;
274
275 if (SvTRUE (ERRSV))
276 {
277 req_free (req);
278 croak (0);
279 }
280
281 FREETMPS;
282 LEAVE;
283
284 errno = errorno;
285}
286
287static void req_free (aio_req req)
288{
289 if (req->grp)
290 {
291 aio_req grp = req->grp;
292
293 /* unlink request */
294 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
295 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
296
297 if (grp->grp_first == req)
298 grp->grp_first = req->grp_next;
299
300 aio_grp_dec (grp);
301 }
302
303 if (req->self) 829 if (req->self)
304 { 830 {
305 sv_unmagic (req->self, PERL_MAGIC_ext); 831 sv_unmagic (req->self, PERL_MAGIC_ext);
306 SvREFCNT_dec (req->self); 832 SvREFCNT_dec (req->self);
307 } 833 }
308 834
309 SvREFCNT_dec (req->data);
310 SvREFCNT_dec (req->fh); 835 SvREFCNT_dec (req->sv1);
311 SvREFCNT_dec (req->fh2); 836 SvREFCNT_dec (req->sv2);
837 SvREFCNT_dec (req->sv3);
838 SvREFCNT_dec (req->sv4);
312 SvREFCNT_dec (req->callback); 839 SvREFCNT_dec (req->callback);
313 Safefree (req->statdata);
314 840
315 if (req->type == REQ_READDIR && req->result >= 0)
316 free (req->data2ptr);
317
318 Safefree (req); 841 free (req);
319} 842}
320 843
321static void req_cancel (aio_req req) 844static void
845req_cancel_subs (aio_req grp)
322{ 846{
323 req->cancelled = 1;
324
325 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 ())
326 { 867 {
327 aio_req sub; 868 int size;
328 869
329 for (sub = req->grp_first; sub; sub = sub->grp_next) 870 X_LOCK (EIO_POOL->reslock);
330 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);
331 } 880 }
332} 881}
333 882
334static int poll_cb () 883static int
884poll_cb (void)
335{ 885{
336 dSP;
337 int count = 0;
338 int do_croak = 0;
339 aio_req req;
340
341 for (;;) 886 for (;;)
342 { 887 {
343 pthread_mutex_lock (&reslock); 888 int res = eio_poll ();
344 req = ress;
345 889
346 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)
347 { 958 {
348 ress = req->next; 959 path = AvARRAY (rv)[1];
960 wdob = AvARRAY (rv)[0];
349 961
350 if (!ress) 962 if (SvOK (wdob))
351 { 963 {
352 /* read any signals sent by the worker threads */ 964 *wd = SvAIO_WD (wdob);
353 char buf [32]; 965 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
354 while (read (respipe [0], buf, 32) == 32)
355 ;
356
357 rese = 0;
358 } 966 }
967 else
968 *wd = EIO_INVALID_WD;
359 } 969 }
360 970 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
361 pthread_mutex_unlock (&reslock);
362
363 if (!req)
364 break;
365
366 --nreqs;
367
368 if (req->type == REQ_QUIT)
369 started--;
370 else if (req->type == REQ_GROUP && req->length)
371 { 971 {
372 req->fd = 1; /* mark request as delayed */ 972 *wd = (aio_wd)(long)SvIVX (rv);
373 continue; 973 *wdsv = SvREFCNT_inc_NN (rv);
974 *ptr = ".";
975 return; /* path set to "." */
374 } 976 }
375 else 977 else
376 { 978 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
377 if (req->type == REQ_READ)
378 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
379
380 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
381 SvREADONLY_off (req->data);
382
383 if (req->statdata)
384 {
385 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
386 PL_laststatval = req->result;
387 PL_statcache = *(req->statdata);
388 }
389
390 req_invoke (req);
391
392 count++;
393 }
394
395 req_free (req);
396 } 979 }
397 980
398 return count; 981 *pathsv = newSVsv (path);
982 *ptr = SvPVbyte_nolen (*pathsv);
399} 983}
400 984
401static void *aio_proc(void *arg); 985static void ecb_noinline
402 986req_set_path1 (aio_req req, SV *path)
403static void start_thread (void)
404{ 987{
405 sigset_t fullsigset, oldsigset; 988 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
406 pthread_t tid;
407 pthread_attr_t attr;
408
409 pthread_attr_init (&attr);
410 pthread_attr_setstacksize (&attr, STACKSIZE);
411 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
412
413 sigfillset (&fullsigset);
414 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415
416 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
417 started++;
418
419 sigprocmask (SIG_SETMASK, &oldsigset, 0);
420} 989}
421 990
422static 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)
423{ 993{
424 while (started < wanted && nreqs >= started) 994 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
425 start_thread ();
426 995
427 ++nreqs; 996 switch (SvTYPE (rv))
428
429 pthread_mutex_lock (&reqlock);
430
431 req->next = 0;
432
433 if (reqe)
434 { 997 {
435 reqe->next = req; 998 case SVt_PVIO:
436 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;
437 } 1010 }
438 else
439 reqe = reqs = req;
440
441 pthread_cond_signal (&reqwait);
442 pthread_mutex_unlock (&reqlock);
443
444 if (nreqs > max_outstanding)
445 for (;;)
446 {
447 poll_cb ();
448
449 if (nreqs <= max_outstanding)
450 break;
451
452 poll_wait ();
453 }
454}
455
456static void end_thread (void)
457{
458 aio_req req;
459 Newz (0, req, 1, aio_cb);
460 req->type = REQ_QUIT;
461
462 req_send (req);
463}
464
465static void min_parallel (int nthreads)
466{
467 if (wanted < nthreads)
468 wanted = nthreads;
469}
470
471static void max_parallel (int nthreads)
472{
473 int cur = started;
474
475 if (wanted > nthreads)
476 wanted = nthreads;
477
478 while (cur > wanted)
479 {
480 end_thread ();
481 cur--;
482 }
483
484 while (started > wanted)
485 {
486 poll_wait ();
487 poll_cb ();
488 }
489}
490
491static void create_pipe ()
492{
493 if (pipe (respipe))
494 croak ("unable to initialize result pipe");
495
496 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
497 croak ("cannot set result pipe to nonblocking mode");
498
499 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
500 croak ("cannot set result pipe to nonblocking mode");
501} 1011}
502 1012
503/*****************************************************************************/ 1013/*****************************************************************************/
504/* work around various missing functions */
505 1014
506#if !HAVE_PREADWRITE 1015static void
507# define pread aio_pread 1016ts_set (struct timespec *ts, NV value)
508# define pwrite aio_pwrite
509
510/*
511 * make our pread/pwrite safe against themselves, but not against
512 * normal read/write by using a mutex. slows down execution a lot,
513 * but that's your problem, not mine.
514 */
515static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
516
517static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
518{ 1017{
519 ssize_t res; 1018 ts->tv_sec = value;
520 off_t ooffset; 1019 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
521
522 pthread_mutex_lock (&preadwritelock);
523 ooffset = lseek (fd, 0, SEEK_CUR);
524 lseek (fd, offset, SEEK_SET);
525 res = read (fd, buf, count);
526 lseek (fd, ooffset, SEEK_SET);
527 pthread_mutex_unlock (&preadwritelock);
528
529 return res;
530} 1020}
531 1021
532static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1022static NV
1023ts_get (const struct timespec *ts)
533{ 1024{
534 ssize_t res; 1025 return ts->tv_sec + ts->tv_nsec * 1e-9;
535 off_t ooffset;
536
537 pthread_mutex_lock (&preadwritelock);
538 ooffset = lseek (fd, 0, SEEK_CUR);
539 lseek (fd, offset, SEEK_SET);
540 res = write (fd, buf, count);
541 lseek (fd, offset, SEEK_SET);
542 pthread_mutex_unlock (&preadwritelock);
543
544 return res;
545} 1026}
546#endif
547 1027
548#if !HAVE_FDATASYNC 1028/*****************************************************************************/
549# define fdatasync fsync
550#endif
551 1029
552#if !HAVE_READAHEAD 1030XS(boot_IO__AIO) ecb_cold;
553# define readahead aio_readahead
554 1031
555static ssize_t readahead (int fd, off_t offset, size_t count) 1032MODULE = IO::AIO PACKAGE = IO::AIO
556{
557 char readahead_buf[4096];
558 1033
559 while (count > 0) 1034PROTOTYPES: ENABLE
560 {
561 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
562 1035
563 pread (fd, readahead_buf, len, offset); 1036BOOT:
564 offset += len;
565 count -= len;
566 }
567
568 errno = 0;
569}
570#endif
571
572#if !HAVE_READDIR_R
573# define readdir_r aio_readdir_r
574
575static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
576
577static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
578{ 1037{
579 struct dirent *e; 1038 static const struct {
580 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 },
581 1045
582 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)
583 1051
584 e = readdir (dirp); 1052 /* for lseek */
585 errorno = errno; 1053 const_iv (SEEK_DATA)
1054 const_iv (SEEK_HOLE)
586 1055
587 if (e) 1056 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
588 { 1057 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
589 *res = ent; 1058 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
590 strcpy (ent->d_name, e->d_name); 1059 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
591 } 1060 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
592 else 1061 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
593 *res = 0;
594 1062
595 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)
596 1068
597 errno = errorno; 1069 /* the second block will be 0 when missing */
598 return e ? 0 : -1; 1070 const_iv (O_ACCMODE)
599}
600#endif
601 1071
602/* sendfile always needs emulation */ 1072 const_iv (O_RDONLY)
603static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1073 const_iv (O_WRONLY)
604{ 1074 const_iv (O_RDWR)
605 ssize_t res; 1075 const_iv (O_CREAT)
1076 const_iv (O_TRUNC)
1077 const_iv (O_EXCL)
1078 const_iv (O_APPEND)
606 1079
607 if (!count) 1080 const_iv (O_ASYNC)
608 return 0; 1081 const_iv (O_DIRECT)
1082 const_iv (O_NOATIME)
609 1083
610#if HAVE_SENDFILE 1084 const_iv (O_CLOEXEC)
611# if __linux 1085 const_iv (O_NOCTTY)
612 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)
613 1097
614# elif __freebsd 1098 const_iv (S_IFIFO)
615 /* 1099 const_iv (S_IFCHR)
616 * Of course, the freebsd sendfile is a dire hack with no thoughts 1100 const_iv (S_IFBLK)
617 * wasted on making it similar to other I/O functions. 1101 const_iv (S_IFLNK)
618 */ 1102 const_iv (S_IFREG)
619 { 1103 const_iv (S_IFDIR)
620 off_t sbytes; 1104 const_iv (S_IFWHT)
621 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1105 const_iv (S_IFSOCK)
1106 const_iv (S_IFMT)
622 1107
623 if (res < 0 && sbytes) 1108 const_iv (ST_RDONLY)
624 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1109 const_iv (ST_NOSUID)
625 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)
626 } 1289 };
627 1290
628# elif __hpux 1291 aio_stash = gv_stashpv ("IO::AIO" , 1);
629 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);
630 1295
631# elif __solaris 1296 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
632 { 1297 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
633 struct sendfilevec vec;
634 size_t sbytes;
635 1298
636 vec.sfv_fd = ifd; 1299 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
637 vec.sfv_flag = 0;
638 vec.sfv_off = offset;
639 vec.sfv_len = count;
640 1300
641 res = sendfilev (ofd, &vec, 1, &sbytes); 1301 reinit ();
1302}
642 1303
643 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;
644 res = sbytes; 1405 req->size = nbytes;
645 } 1406 req->int2 = flags;
646 1407
647# 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
648#else 1443#else
649 res = -1; 1444 pipe (pipefd) < 0
650 errno = ENOSYS; 1445 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
651#endif 1446#endif
652 1447 || close (pipefd [1]) < 0
653 if (res < 0
654 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
655#if __solaris
656 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
657#endif
658 )
659 )
660 {
661 /* emulate sendfile. this is a major pain in the ass */
662 char buf[4096];
663 res = 0;
664
665 while (count)
666 {
667 ssize_t cnt;
668
669 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
670
671 if (cnt <= 0)
672 { 1448 )
673 if (cnt && !res) res = -1; 1449 abort (); /*D*/
674 break;
675 }
676 1450
677 cnt = write (ofd, buf, cnt); 1451 close_fd = pipefd [0];
678
679 if (cnt <= 0)
680 {
681 if (cnt && !res) res = -1;
682 break;
683 }
684
685 offset += cnt;
686 res += cnt;
687 count -= cnt;
688 }
689 }
690
691 return res;
692}
693
694/* read a full directory */
695static int scandir_ (const char *path, void **namesp)
696{
697 DIR *dirp = opendir (path);
698 union
699 {
700 struct dirent d;
701 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702 } u;
703 struct dirent *entp;
704 char *name, *names;
705 int memlen = 4096;
706 int memofs = 0;
707 int res = 0;
708 int errorno;
709
710 if (!dirp)
711 return -1;
712
713 names = malloc (memlen);
714
715 for (;;)
716 {
717 errno = 0, readdir_r (dirp, &u.d, &entp);
718
719 if (!entp)
720 break;
721
722 name = entp->d_name;
723
724 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
725 {
726 int len = strlen (name) + 1;
727
728 res++;
729
730 while (memofs + len > memlen)
731 {
732 memlen *= 2;
733 names = realloc (names, memlen);
734 if (!names)
735 break;
736 }
737
738 memcpy (names + memofs, name, len);
739 memofs += len;
740 }
741 }
742
743 errorno = errno;
744 closedir (dirp);
745
746 if (errorno)
747 {
748 free (names);
749 errno = errorno;
750 res = -1;
751 }
752
753 *namesp = (void *)names;
754 return res;
755}
756
757/*****************************************************************************/
758
759static void *aio_proc (void *thr_arg)
760{
761 aio_req req;
762 int type;
763
764 do
765 {
766 pthread_mutex_lock (&reqlock);
767
768 for (;;)
769 {
770 req = reqs;
771
772 if (reqs)
773 {
774 reqs = reqs->next;
775 if (!reqs) reqe = 0;
776 }
777
778 if (req)
779 break;
780
781 pthread_cond_wait (&reqwait, &reqlock);
782 }
783
784 pthread_mutex_unlock (&reqlock);
785
786 errno = 0; /* strictly unnecessary */
787
788 if (!req->cancelled)
789 switch (type = req->type) /* remember type for QUIT check */
790 {
791 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
792 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793
794 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
795 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
796
797 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
798 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
799 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
800
801 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
802 case REQ_CLOSE: req->result = close (req->fd); break;
803 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
804 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
805 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
806 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
807 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
808
809 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810 case REQ_FSYNC: req->result = fsync (req->fd); break;
811 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
812
813 case REQ_SLEEP:
814 {
815 struct timeval tv;
816
817 tv.tv_sec = req->fd;
818 tv.tv_usec = req->fd2;
819
820 req->result = select (0, 0, 0, 0, &tv);
821 }
822
823 case REQ_QUIT:
824 break;
825
826 default:
827 req->result = ENOSYS;
828 break;
829 } 1452 }
830 1453
831 req->errorno = errno; 1454 req->type = EIO_DUP2;
832 1455 req->int1 = close_fd;
833 pthread_mutex_lock (&reslock); 1456 req->sv2 = newSVsv (fh);
834
835 req->next = 0; 1457 req->int2 = fd;
836 1458
837 if (rese) 1459 REQ_SEND;
838 {
839 rese->next = req;
840 rese = req;
841 }
842 else
843 {
844 rese = ress = req;
845
846 /* write a dummy byte to the pipe so fh becomes ready */
847 write (respipe [1], &respipe, 1);
848 }
849
850 pthread_mutex_unlock (&reslock);
851 }
852 while (type != REQ_QUIT);
853
854 return 0;
855} 1460}
856 1461
857/*****************************************************************************/
858
859static void atfork_prepare (void)
860{
861 pthread_mutex_lock (&reqlock);
862 pthread_mutex_lock (&reslock);
863#if !HAVE_PREADWRITE
864 pthread_mutex_lock (&preadwritelock);
865#endif
866#if !HAVE_READDIR_R
867 pthread_mutex_lock (&readdirlock);
868#endif
869}
870
871static void atfork_parent (void)
872{
873#if !HAVE_READDIR_R
874 pthread_mutex_unlock (&readdirlock);
875#endif
876#if !HAVE_PREADWRITE
877 pthread_mutex_unlock (&preadwritelock);
878#endif
879 pthread_mutex_unlock (&reslock);
880 pthread_mutex_unlock (&reqlock);
881}
882
883static void atfork_child (void)
884{
885 aio_req prv;
886
887 started = 0;
888
889 while (reqs)
890 {
891 prv = reqs;
892 reqs = prv->next;
893 req_free (prv);
894 }
895
896 reqs = reqe = 0;
897
898 while (ress)
899 {
900 prv = ress;
901 ress = prv->next;
902 req_free (prv);
903 }
904
905 ress = rese = 0;
906
907 close (respipe [0]);
908 close (respipe [1]);
909 create_pipe ();
910
911 atfork_parent ();
912}
913
914#define dREQ \
915 aio_req req; \
916 \
917 if (SvOK (callback) && !SvROK (callback)) \
918 croak ("callback must be undef or of reference type"); \
919 \
920 Newz (0, req, 1, aio_cb); \
921 if (!req) \
922 croak ("out of memory during aio_req allocation"); \
923 \
924 req->callback = newSVsv (callback)
925
926#define REQ_SEND \
927 req_send (req); \
928 \
929 if (GIMME_V != G_VOID) \
930 XPUSHs (req_sv (req, AIO_REQ_KLASS));
931
932MODULE = IO::AIO PACKAGE = IO::AIO
933
934PROTOTYPES: ENABLE
935
936BOOT:
937{
938 HV *stash = gv_stashpv ("IO::AIO", 1);
939 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
940 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
941 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
942
943 create_pipe ();
944 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
945}
946
947void 1462void
948min_parallel (nthreads) 1463aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
949 int nthreads
950 PROTOTYPE: $
951
952void
953max_parallel (nthreads)
954 int nthreads
955 PROTOTYPE: $
956
957int
958max_outstanding (nreqs)
959 int nreqs
960 PROTOTYPE: $
961 CODE: 1464 PPCODE:
962 RETVAL = max_outstanding;
963 max_outstanding = nreqs;
964
965void
966aio_open (pathname,flags,mode,callback=&PL_sv_undef)
967 SV * pathname
968 int flags
969 int mode
970 SV * callback
971 PROTOTYPE: $$$;$
972 PPCODE:
973{ 1465{
1466 int fd = s_fileno_croak (fh, 0);
974 dREQ; 1467 dREQ;
975 1468
976 req->type = REQ_OPEN; 1469 req->type = EIO_SEEK;
977 req->data = newSVsv (pathname); 1470 req->sv1 = newSVsv (fh);
978 req->dataptr = SvPVbyte_nolen (req->data); 1471 req->int1 = fd;
979 req->fd = flags; 1472 req->offs = SvVAL64 (offset);
980 req->mode = mode; 1473 req->int2 = whence;
981 1474
982 REQ_SEND; 1475 REQ_SEND;
983} 1476}
984 1477
985void 1478void
986aio_close (fh,callback=&PL_sv_undef) 1479aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
987 SV * fh
988 SV * callback
989 PROTOTYPE: $;$
990 ALIAS: 1480 ALIAS:
991 aio_close = REQ_CLOSE
992 aio_fsync = REQ_FSYNC
993 aio_fdatasync = REQ_FDATASYNC
994 PPCODE:
995{
996 dREQ;
997
998 req->type = ix;
999 req->fh = newSVsv (fh);
1000 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1001
1002 REQ_SEND (req);
1003}
1004
1005void
1006aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1007 SV * fh
1008 UV offset
1009 UV length
1010 SV * data
1011 UV dataoffset
1012 SV * callback
1013 ALIAS:
1014 aio_read = REQ_READ 1481 aio_read = EIO_READ
1015 aio_write = REQ_WRITE 1482 aio_write = EIO_WRITE
1016 PROTOTYPE: $$$$$;$
1017 PPCODE: 1483 PPCODE:
1018{ 1484{
1019 aio_req req;
1020 STRLEN svlen; 1485 STRLEN svlen;
1486 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1021 char *svptr = SvPVbyte (data, svlen); 1487 char *svptr = SvPVbyte (data, svlen);
1022 1488 UV len = SvUV (length);
1023 SvUPGRADE (data, SVt_PV);
1024 SvPOK_on (data);
1025 1489
1026 if (dataoffset < 0) 1490 if (dataoffset < 0)
1027 dataoffset += svlen; 1491 dataoffset += svlen;
1028 1492
1029 if (dataoffset < 0 || dataoffset > svlen) 1493 if (dataoffset < 0 || dataoffset > svlen)
1030 croak ("data offset outside of string"); 1494 croak ("dataoffset outside of data scalar");
1031 1495
1032 if (ix == REQ_WRITE) 1496 if (ix == EIO_WRITE)
1033 { 1497 {
1034 /* write: check length and adjust. */ 1498 /* write: check length and adjust. */
1035 if (length < 0 || length + dataoffset > svlen) 1499 if (!SvOK (length) || len + dataoffset > svlen)
1036 length = svlen - dataoffset; 1500 len = svlen - dataoffset;
1037 } 1501 }
1038 else 1502 else
1039 { 1503 {
1040 /* read: grow scalar as necessary */ 1504 /* read: check type and grow scalar as necessary */
1505 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1041 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");
1042 } 1509 }
1043
1044 if (length < 0)
1045 croak ("length must not be negative");
1046 1510
1047 { 1511 {
1048 dREQ; 1512 dREQ;
1049 1513
1050 req->type = ix; 1514 req->type = ix;
1051 req->fh = newSVsv (fh); 1515 req->sv1 = newSVsv (fh);
1052 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1516 req->int1 = fd;
1053 : IoOFP (sv_2io (fh))); 1517 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1054 req->offset = offset; 1518 req->size = len;
1055 req->length = length;
1056 req->data = SvREFCNT_inc (data); 1519 req->sv2 = SvREFCNT_inc (data);
1057 req->dataptr = (char *)svptr + dataoffset; 1520 req->ptr2 = (char *)svptr + dataoffset;
1521 req->stroffset = dataoffset;
1058 1522
1059 if (!SvREADONLY (data)) 1523 if (!SvREADONLY (data))
1060 { 1524 {
1061 SvREADONLY_on (data); 1525 SvREADONLY_on (data);
1062 req->data2ptr = (void *)data; 1526 req->flags |= FLAG_SV2_RO_OFF;
1063 } 1527 }
1064 1528
1065 REQ_SEND; 1529 REQ_SEND;
1066 } 1530 }
1067} 1531}
1068 1532
1069void 1533void
1070aio_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)
1071 SV * out_fh 1535 ALIAS:
1072 SV * in_fh 1536 aio_ioctl = EIO_IOCTL
1073 UV in_offset 1537 aio_fcntl = EIO_FCNTL
1074 UV length
1075 SV * callback
1076 PROTOTYPE: $$$$;$
1077 PPCODE: 1538 PPCODE:
1078{ 1539{
1079 dREQ; 1540 int fd = s_fileno_croak (fh, 0);
1541 char *svptr;
1080 1542
1081 req->type = REQ_SENDFILE; 1543 if (SvPOK (arg) || !SvNIOK (arg))
1082 req->fh = newSVsv (out_fh);
1083 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1084 req->fh2 = newSVsv (in_fh);
1085 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1086 req->offset = in_offset;
1087 req->length = length;
1088
1089 REQ_SEND;
1090}
1091
1092void
1093aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1094 SV * fh
1095 UV offset
1096 IV length
1097 SV * callback
1098 PROTOTYPE: $$$;$
1099 PPCODE:
1100{
1101 dREQ;
1102
1103 req->type = REQ_READAHEAD;
1104 req->fh = newSVsv (fh);
1105 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1106 req->offset = offset;
1107 req->length = length;
1108
1109 REQ_SEND;
1110}
1111
1112void
1113aio_stat (fh_or_path,callback=&PL_sv_undef)
1114 SV * fh_or_path
1115 SV * callback
1116 ALIAS:
1117 aio_stat = REQ_STAT
1118 aio_lstat = REQ_LSTAT
1119 PPCODE:
1120{
1121 dREQ;
1122
1123 New (0, req->statdata, 1, Stat_t);
1124 if (!req->statdata)
1125 { 1544 {
1126 req_free (req); 1545 STRLEN svlen;
1127 croak ("out of memory during aio_req->statdata allocation"); 1546 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1128 } 1547#ifdef IOCPARM_LEN
1548 STRLEN need = IOCPARM_LEN (request);
1549#else
1550 STRLEN need = 256;
1551#endif
1129 1552
1130 if (SvPOK (fh_or_path)) 1553 if (svlen < need)
1131 { 1554 svptr = SvGROW (arg, need);
1132 req->type = ix;
1133 req->data = newSVsv (fh_or_path);
1134 req->dataptr = SvPVbyte_nolen (req->data);
1135 } 1555 }
1136 else 1556 else
1557 svptr = (char *)SvIV (arg);
1558
1137 { 1559 {
1560 dREQ;
1561
1138 req->type = REQ_FSTAT; 1562 req->type = ix;
1139 req->fh = newSVsv (fh_or_path); 1563 req->sv1 = newSVsv (fh);
1140 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;
1141 } 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);
1142 1584
1143 REQ_SEND; 1585 REQ_SEND;
1144} 1586}
1145 1587
1146void 1588void
1147aio_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)
1148 SV * pathname 1590 PPCODE:
1149 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)
1150 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:
1151 aio_unlink = REQ_UNLINK 1763 aio_unlink = EIO_UNLINK
1152 aio_rmdir = REQ_RMDIR 1764 aio_rmdir = EIO_RMDIR
1153 aio_readdir = REQ_READDIR 1765 aio_readdir = EIO_READDIR
1154 PPCODE: 1766 PPCODE:
1155{ 1767{
1156 dREQ; 1768 dREQ;
1157 1769
1158 req->type = ix; 1770 req->type = ix;
1159 req->data = newSVsv (pathname); 1771 req_set_path1 (req, pathname);
1160 req->dataptr = SvPVbyte_nolen (req->data); 1772
1161
1162 REQ_SEND; 1773 REQ_SEND;
1163} 1774}
1164 1775
1165void 1776void
1166aio_link (oldpath,newpath,callback=&PL_sv_undef) 1777aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1167 SV * oldpath
1168 SV * newpath
1169 SV * callback
1170 ALIAS: 1778 ALIAS:
1171 aio_link = REQ_LINK 1779 aio_link = EIO_LINK
1172 aio_symlink = REQ_SYMLINK 1780 aio_symlink = EIO_SYMLINK
1173 aio_rename = REQ_RENAME 1781 aio_rename = EIO_RENAME
1174 PPCODE: 1782 PPCODE:
1175{ 1783{
1784 eio_wd wd2 = 0;
1176 dREQ; 1785 dREQ;
1177 1786
1178 req->type = ix; 1787 req->type = ix;
1179 req->fh = newSVsv (oldpath); 1788 req_set_path1 (req, oldpath);
1180 req->data2ptr = SvPVbyte_nolen (req->fh); 1789 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1181 req->data = newSVsv (newpath); 1790 req->int3 = (long)wd2;
1182 req->dataptr = SvPVbyte_nolen (req->data);
1183 1791
1184 REQ_SEND; 1792 REQ_SEND;
1185} 1793}
1186 1794
1187void 1795void
1188aio_sleep (delay,callback=&PL_sv_undef) 1796aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1189 double delay
1190 SV * callback
1191 PPCODE: 1797 PPCODE:
1192{ 1798{
1799 eio_wd wd2 = 0;
1193 dREQ; 1800 dREQ;
1194 1801
1195 req->type = REQ_SLEEP; 1802 req->type = EIO_RENAME;
1196 req->fd = delay < 0. ? 0 : delay; 1803 req_set_path1 (req, oldpath);
1197 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1804 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1198 1805 req->int2 = flags;
1806 req->int3 = (long)wd2;
1807
1199 REQ_SEND; 1808 REQ_SEND;
1200} 1809}
1201 1810
1202void 1811void
1203aio_group (callback=&PL_sv_undef) 1812aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1204 SV * callback 1813 PPCODE:
1205 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
1206 PPCODE: 1830 PPCODE:
1207{ 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);
1208 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
1209 req->type = REQ_GROUP; 1981 req->type = EIO_GROUP;
1982
1983 PUTBACK;
1210 req_send (req); 1984 req_submit (req);
1985 SPAGAIN;
1986
1211 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1987 XPUSHs (req_sv (req, aio_grp_stash));
1212} 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;
1213 2024
1214void 2025void
1215flush () 2026flush ()
1216 PROTOTYPE:
1217 CODE: 2027 CODE:
1218 while (nreqs) 2028 while (eio_nreqs ())
1219 { 2029 {
1220 poll_wait (); 2030 poll_wait ();
1221 poll_cb (); 2031 poll_cb ();
1222 } 2032 }
1223 2033
1224void 2034int
1225poll() 2035poll ()
1226 PROTOTYPE:
1227 CODE: 2036 CODE:
1228 if (nreqs)
1229 {
1230 poll_wait (); 2037 poll_wait ();
1231 poll_cb (); 2038 RETVAL = poll_cb ();
1232 }
1233
1234int
1235poll_fileno()
1236 PROTOTYPE:
1237 CODE:
1238 RETVAL = respipe [0];
1239 OUTPUT: 2039 OUTPUT:
1240 RETVAL 2040 RETVAL
1241 2041
1242int 2042int
2043poll_fileno ()
2044 CODE:
2045 RETVAL = s_epipe_fd (&respipe);
2046 OUTPUT:
2047 RETVAL
2048
2049int
1243poll_cb(...) 2050poll_cb (...)
1244 PROTOTYPE: 2051 PROTOTYPE:
1245 CODE: 2052 CODE:
1246 RETVAL = poll_cb (); 2053 RETVAL = poll_cb ();
1247 OUTPUT: 2054 OUTPUT:
1248 RETVAL 2055 RETVAL
1249 2056
1250void 2057void
1251poll_wait() 2058poll_wait ()
1252 PROTOTYPE:
1253 CODE: 2059 CODE:
1254 if (nreqs)
1255 poll_wait (); 2060 poll_wait ();
1256 2061
1257int 2062int
1258nreqs() 2063nreqs ()
1259 PROTOTYPE:
1260 CODE: 2064 CODE:
1261 RETVAL = nreqs; 2065 RETVAL = eio_nreqs ();
1262 OUTPUT: 2066 OUTPUT:
1263 RETVAL 2067 RETVAL
1264 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
1265PROTOTYPES: DISABLE 2447PROTOTYPES: DISABLE
1266 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
1267MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2477MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268 2478
1269void 2479void
1270cancel (aio_req_ornot req) 2480cancel (aio_req_ornot req)
1271 PROTOTYPE:
1272 CODE: 2481 CODE:
1273 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}
1274 2499
1275MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2500MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276 2501
1277void 2502void
1278add (aio_req grp, ...) 2503add (aio_req grp, ...)
1279 PPCODE: 2504 PPCODE:
1280{ 2505{
1281 int i; 2506 int i;
1282 2507
1283 if (grp->fd == 2) 2508 if (grp->int1 == 2)
1284 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");
1285 2510
1286 for (i = 1; i < items; ++i ) 2511 for (i = 1; i < items; ++i )
1287 { 2512 {
2513 aio_req req;
2514
1288 if (GIMME_V != G_VOID) 2515 if (GIMME_V != G_VOID)
1289 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2516 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290 2517
1291 aio_req req = SvAIO_REQ (ST (i)); 2518 req = SvAIO_REQ (ST (i));
1292 2519
1293 if (req) 2520 if (req)
1294 { 2521 eio_grp_add (grp, req);
1295 ++grp->length;
1296 req->grp = grp;
1297
1298 req->grp_prev = 0;
1299 req->grp_next = grp->grp_first;
1300
1301 if (grp->grp_first)
1302 grp->grp_first->grp_prev = req;
1303
1304 grp->grp_first = req;
1305 }
1306 } 2522 }
1307} 2523}
1308 2524
1309void 2525void
1310lock (aio_req grp) 2526cancel_subs (aio_req_ornot req)
1311 CODE: 2527 CODE:
1312 ++grp->length; 2528 req_cancel_subs (req);
1313 2529
1314void 2530void
1315unlock (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)
1316 CODE: 2556 CODE:
1317 aio_grp_dec (grp); 2557 eio_grp_limit (grp, limit);
1318 2558
1319void 2559void
1320feeder_limit (aio_req grp, int limit) 2560feed (aio_req grp, SV *callback = &PL_sv_undef)
1321 CODE: 2561 CODE:
1322 grp->fd2 = limit;
1323 aio_grp_feed (grp);
1324
1325void
1326set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1327 CODE:
1328{ 2562{
1329 SvREFCNT_dec (grp->fh2); 2563 SvREFCNT_dec (grp->sv2);
1330 grp->fh2 = newSVsv (callback); 2564 grp->sv2 = newSVsv (callback);
2565 grp->feed = aio_grp_feed;
1331 2566
1332 if (grp->fd2 <= 0) 2567 if (grp->int2 <= 0)
1333 grp->fd2 = 2; 2568 grp->int2 = 2;
1334 2569
1335 aio_grp_feed (grp); 2570 eio_grp_limit (grp, grp->int2);
1336} 2571}
1337 2572

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