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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.56 by root, Mon Oct 23 14:49:51 2006 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 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#include "schmorp.h"
9
10#include <pthread.h>
11 10
12#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 14#include <sys/types.h>
17#include <sys/stat.h> 15#include <sys/stat.h>
18#include <limits.h> 16#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 17#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 18#include <sched.h>
23 19
24#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25# if __linux
26# include <sys/sendfile.h>
27# elif __freebsd
28# include <sys/socket.h>
29# include <sys/uio.h> 21# include <sys/mman.h>
30# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
31# include <sys/socket.h> 86 #include <sys/time.h>
32# elif __solaris /* not yet */
33# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
34# else 151# else
35# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 153# endif
37#endif 154#endif
38 155
39/* used for struct dirent, AIX doesn't provide it */ 156/* defines all sorts of constants to 0 unless they are already defined */
40#ifndef NAME_MAX 157/* also provides const_iv_ and const_niv_ macros for them */
41# define NAME_MAX 4096 158#include "def0.h"
42#endif
43 159
44#if __ia64 160#ifndef makedev
45# define STACKSIZE 65536 161# define makedev(maj,min) (((maj) << 8) | (min))
162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
169
170#if PAGESIZE <= 0
171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
173
174/*****************************************************************************/
175
176#if !_POSIX_MAPPED_FILES
177# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
178# define munmap(addr,length) EIO_ENOSYS ()
179#endif
180
181#if !_POSIX_MEMORY_PROTECTION
182# define mprotect(addr,len,prot) EIO_ENOSYS ()
183#endif
184
185#define FOREIGN_MAGIC PERL_MAGIC_ext
186
187static int ecb_cold
188mmap_free (pTHX_ SV *sv, MAGIC *mg)
189{
190 int old_errno = errno;
191 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
192 errno = old_errno;
193
194 mg->mg_obj = 0; /* just in case */
195
196 SvREADONLY_off (sv);
197
198 if (SvPVX (sv) != mg->mg_ptr)
199 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
200
201 SvCUR_set (sv, 0);
202 SvPVX (sv) = 0;
203 SvOK_off (sv);
204
205 return 0;
206}
207
208static MGVTBL mmap_vtbl = {
209 0, 0, 0, 0, mmap_free
210};
211
212static int ecb_cold
213sysfree_free (pTHX_ SV *sv, MAGIC *mg)
214{
215 free (mg->mg_ptr);
216 mg->mg_obj = 0; /* just in case */
217
218 SvREADONLY_off (sv);
219
220 if (SvPVX (sv) != mg->mg_ptr)
221 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
222
223 SvCUR_set (sv, 0);
224 SvPVX (sv) = 0;
225 SvOK_off (sv);
226
227 return 0;
228}
229
230static MGVTBL sysfree_vtbl = {
231 0, 0, 0, 0, sysfree_free
232};
233
234/*****************************************************************************/
235
236/* helper: set scalar to foreign ptr with custom free */
237static void
238sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
239{
240 sv_force_normal (sv);
241
242 /* we store the length in mg_obj, as namlen is I32 :/ */
243 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
244 ->mg_obj = (SV *)length;
245
246 SvUPGRADE (sv, SVt_PV); /* nop... */
247
248 if (SvLEN (sv))
249 Safefree (SvPVX (sv));
250
251 SvPVX (sv) = (char *)addr;
252 SvCUR_set (sv, length);
253 SvLEN_set (sv, 0);
254 SvPOK_only (sv);
255}
256
257static void
258sv_clear_foreign (SV *sv)
259{
260 /* todo: iterate over magic and only free ours, but of course */
261 /* the perl5porters will call that (correct) behaviour buggy */
262 sv_unmagic (sv, FOREIGN_MAGIC);
263}
264
265/*****************************************************************************/
266
267static void
268fiemap (eio_req *req)
269{
270 req->result = -1;
271
272#if HAVE_FIEMAP
273 /* assume some c99 */
274 struct fiemap *fiemap = 0;
275 size_t end_offset;
276 int count = req->int3;
277
278 req->flags |= EIO_FLAG_PTR1_FREE;
279
280 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
281 /* increase in 3.5kb steps */
282 if (count < 0)
283 count = 8;
284
285 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
286 errno = ENOMEM;
287 if (!fiemap)
288 return;
289
290 req->ptr1 = fiemap;
291
292 fiemap->fm_start = req->offs;
293 fiemap->fm_length = req->size;
294 fiemap->fm_flags = req->int2;
295 fiemap->fm_extent_count = count;
296
297 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
298 return;
299
300 if (req->int3 >= 0 /* not autosizing */
301 || !fiemap->fm_mapped_extents /* no more extents */
302 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
303 goto done;
304
305 /* else we have to loop -
306 * it would be tempting (actually I tried that first) to just query the
307 * number of extents needed, but linux often feels like not returning all
308 * extents, without telling us it left any out. this complicates
309 * this quite a bit.
310 */
311
312 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
313
314 for (;;)
315 {
316 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
317 char scratch[3072];
318 struct fiemap *incmap = (struct fiemap *)scratch;
319
320 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
321 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
322 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
323 incmap->fm_flags = fiemap->fm_flags;
324 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
325
326 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
327 return;
328
329 if (!incmap->fm_mapped_extents)
330 goto done;
331
332 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
333 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
334 errno = ENOMEM;
335 if (!fiemap)
336 return;
337
338 req->ptr1 = fiemap;
339
340 for (count = 0; count < incmap->fm_mapped_extents; ++count)
341 {
342 struct fiemap_extent *e = incmap->fm_extents + count;
343
344 if (e->fe_logical + e->fe_length >= end_offset)
345 goto done;
346
347 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
348
349 if (e->fe_flags & FIEMAP_EXTENT_LAST)
350 goto done;
351
352 }
353 }
354
355done:
356 req->result = 0;
357
46#else 358#else
47# define STACKSIZE 8192 359 errno = ENOSYS;
48#endif 360#endif
361}
362
363/*****************************************************************************/
49 364
50enum { 365enum {
51 REQ_QUIT, 366 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_GROUP, REQ_NOP,
61 REQ_SLEEP,
62}; 367};
63 368
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; 369typedef eio_req *aio_req;
92typedef aio_cb *aio_req_ornot; 370typedef eio_req *aio_req_ornot;
371typedef eio_wd aio_wd;
93 372
94static int started, wanted; 373static SV *on_next_submit;
95static volatile int nreqs; 374static int next_pri = EIO_PRI_DEFAULT;
96static int max_outstanding = 1<<30; 375static int max_outstanding;
97static int respipe [2];
98 376
99static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 377static s_epipe respipe;
100static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102 378
103static volatile aio_req reqs, reqe; /* queue start, queue end */ 379static void req_destroy (aio_req req);
104static volatile aio_req ress, rese; /* queue start, queue end */
105
106static void req_invoke (aio_req req); 380static void req_cancel (aio_req req);
107static void req_free (aio_req req); 381
382static void
383want_poll (void)
384{
385 /* write a dummy byte to the pipe so fh becomes ready */
386 s_epipe_signal (&respipe);
387}
388
389static void
390done_poll (void)
391{
392 /* read any signals sent by the worker threads */
393 s_epipe_drain (&respipe);
394}
108 395
109/* must be called at most once */ 396/* must be called at most once */
110static SV *req_sv (aio_req req, const char *klass) 397static SV *
398req_sv (aio_req req, HV *stash)
111{ 399{
112 if (!req->self) 400 if (!req->self)
113 { 401 {
114 req->self = (SV *)newHV (); 402 req->self = (SV *)newHV ();
115 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 403 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116 } 404 }
117 405
118 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 406 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119} 407}
120 408
121static aio_req SvAIO_REQ (SV *sv) 409static SV *
410newSVaio_wd (aio_wd wd)
411{
412 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
413}
414
415static aio_req
416SvAIO_REQ (SV *sv)
122{ 417{
123 MAGIC *mg; 418 MAGIC *mg;
124 419
125 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 420 if (!SvROK (sv)
421 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
422 || (SvSTASH (SvRV (sv)) != aio_grp_stash
423 && SvSTASH (SvRV (sv)) != aio_req_stash
424 && !sv_derived_from (sv, "IO::AIO::REQ")))
126 croak ("object of class " AIO_REQ_KLASS " expected"); 425 croak ("object of class IO::AIO::REQ expected");
127 426
128 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 427 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129 428
130 return mg ? (aio_req)mg->mg_ptr : 0; 429 return mg ? (aio_req)mg->mg_ptr : 0;
131} 430}
132 431
432static aio_wd
433SvAIO_WD (SV *sv)
434{
435 if (!SvROK (sv)
436 || SvTYPE (SvRV (sv)) != SVt_PVMG
437 || SvSTASH (SvRV (sv)) != aio_wd_stash)
438 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
439
440 return (aio_wd)(long)SvIVX (SvRV (sv));
441}
442
443static SV *
444newmortalFH (int fd, int flags)
445{
446 if (fd < 0)
447 return &PL_sv_undef;
448
449 GV *gv = (GV *)sv_newmortal ();
450 char sym[64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
454 gv_init (gv, aio_stash, sym, symlen, 0);
455
456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 fd
462 );
463
464 return do_open (gv, sym, symlen, 0, 0, 0, 0)
465 ? (SV *)gv : &PL_sv_undef;
466}
467
468static void
133static void aio_grp_feed (aio_req grp) 469aio_grp_feed (aio_req grp)
134{ 470{
135 while (grp->length < grp->fd2) 471 if (grp->sv2 && SvOK (grp->sv2))
136 { 472 {
137 int old_len = grp->length; 473 dSP;
138 474
139 if (grp->fh2 && SvOK (grp->fh2)) 475 ENTER;
476 SAVETMPS;
477 PUSHMARK (SP);
478 XPUSHs (req_sv (grp, aio_grp_stash));
479 PUTBACK;
480 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
481 SPAGAIN;
482 FREETMPS;
483 LEAVE;
484 }
485}
486
487static void
488req_submit (eio_req *req)
489{
490 eio_submit (req);
491
492 if (expect_false (on_next_submit))
493 {
494 dSP;
495 SV *cb = sv_2mortal (on_next_submit);
496
497 on_next_submit = 0;
498
499 PUSHMARK (SP);
500 PUTBACK;
501 call_sv (cb, G_DISCARD | G_EVAL);
502 }
503}
504
505static int
506req_invoke (eio_req *req)
507{
508 if (req->flags & FLAG_SV2_RO_OFF)
509 SvREADONLY_off (req->sv2);
510
511 if (!EIO_CANCELLED (req) && req->callback)
512 {
513 dSP;
514 static SV *sv_result_cache; /* caches the result integer SV */
515 SV *sv_result;
516
517 ENTER;
518 SAVETMPS;
519 PUSHMARK (SP);
520 EXTEND (SP, 1);
521
522 /* do not recreate the result IV from scratch each time */
523 if (expect_true (sv_result_cache))
140 { 524 {
141 dSP; 525 sv_result = sv_result_cache; sv_result_cache = 0;
142 526 SvIV_set (sv_result, req->result);
143 ENTER; 527 SvIOK_only (sv_result);
144 SAVETMPS;
145 PUSHMARK (SP);
146 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
147 PUTBACK;
148 call_sv (grp->fh2, G_VOID | G_EVAL);
149 SPAGAIN;
150 FREETMPS;
151 LEAVE;
152 } 528 }
153 529 else
154 /* stop if no progress has been made */
155 if (old_len == grp->length)
156 { 530 {
157 SvREFCNT_dec (grp->fh2); 531 sv_result = newSViv (req->result);
158 grp->fh2 = 0; 532 SvREADONLY_on (sv_result);
159 break;
160 } 533 }
534
535 switch (req->type)
536 {
537 case EIO_WD_OPEN:
538 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
539 break;
540
541 case EIO_READDIR:
542 {
543 SV *rv = &PL_sv_undef;
544
545 if (req->result >= 0)
546 {
547 int i;
548 char *names = (char *)req->ptr2;
549 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
550 AV *av = newAV ();
551
552 av_extend (av, req->result - 1);
553
554 for (i = 0; i < req->result; ++i)
555 {
556 if (req->int1 & EIO_READDIR_DENTS)
557 {
558 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
559
560 if (req->int1 & EIO_READDIR_CUSTOM2)
561 {
562 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
563 AV *avent = newAV ();
564
565 av_extend (avent, 2);
566
567 if (!sv_type [ent->type])
568 {
569 sv_type [ent->type] = newSViv (ent->type);
570 SvREADONLY_on (sv_type [ent->type]);
571 }
572
573 av_store (avent, 0, namesv);
574 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
575 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
576
577 av_store (av, i, newRV_noinc ((SV *)avent));
578 }
579 else
580 av_store (av, i, namesv);
581
582 ++ent;
583 }
584 else
585 {
586 SV *name = newSVpv (names, 0);
587 av_store (av, i, name);
588 names += SvCUR (name) + 1;
589 }
590 }
591
592 rv = sv_2mortal (newRV_noinc ((SV *)av));
593 }
594
595 PUSHs (rv);
596
597 if (req->int1 & EIO_READDIR_CUSTOM1)
598 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
599 }
600 break;
601
602 case EIO_OPEN:
603 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
604 break;
605
606 case EIO_STATVFS:
607 case EIO_FSTATVFS:
608 {
609 SV *rv = &PL_sv_undef;
610
611#ifndef _WIN32
612 if (req->result >= 0)
613 {
614 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
615 HV *hv = newHV ();
616 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
617 * chooses to make it a struct.
618 */
619 unsigned long fsid = 0;
620 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
621
622 rv = sv_2mortal (newRV_noinc ((SV *)hv));
623
624 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
625 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
626 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
627 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
628 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
629 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
630 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
631 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
632 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
633 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
634 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
635 }
636#endif
637
638 PUSHs (rv);
639 }
640
641 break;
642
643 case EIO_GROUP:
644 req->int1 = 2; /* mark group as finished */
645
646 if (req->sv1)
647 {
648 int i;
649 AV *av = (AV *)req->sv1;
650
651 EXTEND (SP, AvFILL (av) + 1);
652 for (i = 0; i <= AvFILL (av); ++i)
653 PUSHs (*av_fetch (av, i, 0));
654 }
655 break;
656
657 case EIO_NOP:
658 case EIO_BUSY:
659 break;
660
661 case EIO_READLINK:
662 case EIO_REALPATH:
663 if (req->result > 0)
664 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
665 break;
666
667 case EIO_STAT:
668 case EIO_LSTAT:
669 case EIO_FSTAT:
670 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
671
672 if (!(PL_laststatval = req->result))
673 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
674 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
675
676 PUSHs (sv_result);
677 break;
678
679 case EIO_SEEK:
680 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
681 break;
682
683 case EIO_READ:
684 {
685 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
686 *SvEND (req->sv2) = 0;
687 SvPOK_only (req->sv2);
688 SvSETMAGIC (req->sv2);
689 PUSHs (sv_result);
690 }
691 break;
692
693 case EIO_SLURP:
694 {
695 if (req->result >= 0)
696 {
697 /* if length was originally not known, we steal the malloc'ed memory */
698 if (req->flags & EIO_FLAG_PTR2_FREE)
699 {
700 req->flags &= ~EIO_FLAG_PTR2_FREE;
701 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
702 }
703 else
704 {
705 SvCUR_set (req->sv2, req->result);
706 *SvEND (req->sv2) = 0;
707 SvPOK_only (req->sv2);
708 }
709
710 SvSETMAGIC (req->sv2);
711 }
712
713 PUSHs (sv_result);
714 }
715 break;
716
717 case EIO_CUSTOM:
718 if (req->feed == fiemap)
719 {
720#if HAVE_FIEMAP
721 if (!req->result)
722 {
723 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
724
725 if (fiemap->fm_extent_count)
726 {
727 AV *av = newAV ();
728 int i;
729
730 while (fiemap->fm_mapped_extents)
731 {
732 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
733 AV *ext_av = newAV ();
734
735 av_store (ext_av, 3, newSVuv (extent->fe_flags));
736 av_store (ext_av, 2, newSVval64 (extent->fe_length));
737 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
738 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
739
740 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
741 }
742
743 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
744 }
745 else
746 {
747 SvIV_set (sv_result, fiemap->fm_mapped_extents);
748 PUSHs (sv_result);
749 }
750 }
751#endif
752 }
753 else
754 PUSHs (sv_result);
755 break;
756
757 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
758 if (req->result > 0)
759 SvIV_set (sv_result, 0);
760 /* FALLTHROUGH */
761
762 default:
763 PUSHs (sv_result);
764 break;
765 }
766
767 errno = req->errorno;
768
769 PUTBACK;
770 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
771 SPAGAIN;
772
773 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
774 SvREFCNT_dec (sv_result);
775 else
776 sv_result_cache = sv_result;
777
778 FREETMPS;
779 LEAVE;
780
781 PUTBACK;
161 } 782 }
162}
163 783
164static void aio_grp_dec (aio_req grp) 784 return !!SvTRUE (ERRSV);
165{
166 --grp->length;
167
168 /* call feeder, if applicable */
169 aio_grp_feed (grp);
170
171 /* finish, if done */
172 if (!grp->length && grp->fd)
173 {
174 req_invoke (grp);
175 req_free (grp);
176 }
177} 785}
178 786
179static void poll_wait () 787static void
788req_destroy (aio_req req)
180{ 789{
181 if (nreqs && !ress)
182 {
183 fd_set rfd;
184 FD_ZERO(&rfd);
185 FD_SET(respipe [0], &rfd);
186
187 select (respipe [0] + 1, &rfd, 0, 0, 0);
188 }
189}
190
191static void req_invoke (aio_req req)
192{
193 dSP;
194 int errorno = errno;
195
196 if (req->cancelled || !SvOK (req->callback))
197 return;
198
199 errno = req->errorno;
200
201 ENTER;
202 SAVETMPS;
203 PUSHMARK (SP);
204 EXTEND (SP, 1);
205
206 switch (req->type)
207 {
208 case REQ_READDIR:
209 {
210 SV *rv = &PL_sv_undef;
211
212 if (req->result >= 0)
213 {
214 char *buf = req->data2ptr;
215 AV *av = newAV ();
216
217 while (req->result)
218 {
219 SV *sv = newSVpv (buf, 0);
220
221 av_push (av, sv);
222 buf += SvCUR (sv) + 1;
223 req->result--;
224 }
225
226 rv = sv_2mortal (newRV_noinc ((SV *)av));
227 }
228
229 PUSHs (rv);
230 }
231 break;
232
233 case REQ_OPEN:
234 {
235 /* convert fd to fh */
236 SV *fh;
237
238 PUSHs (sv_2mortal (newSViv (req->result)));
239 PUTBACK;
240 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241 SPAGAIN;
242
243 fh = SvREFCNT_inc (POPs);
244
245 PUSHMARK (SP);
246 XPUSHs (sv_2mortal (fh));
247 }
248 break;
249
250 case REQ_GROUP:
251 req->fd = 2; /* mark group as finished */
252
253 if (req->data)
254 {
255 int i;
256 AV *av = (AV *)req->data;
257
258 EXTEND (SP, AvFILL (av) + 1);
259 for (i = 0; i <= AvFILL (av); ++i)
260 PUSHs (*av_fetch (av, i, 0));
261 }
262 break;
263
264 case REQ_NOP:
265 case REQ_SLEEP:
266 break;
267
268 default:
269 PUSHs (sv_2mortal (newSViv (req->result)));
270 break;
271 }
272
273
274 PUTBACK;
275 call_sv (req->callback, G_VOID | G_EVAL);
276 SPAGAIN;
277
278 FREETMPS;
279 LEAVE;
280
281 errno = errorno;
282
283 if (SvTRUE (ERRSV))
284 {
285 req_free (req);
286 croak (0);
287 }
288}
289
290static void req_free (aio_req req)
291{
292 if (req->grp)
293 {
294 aio_req grp = req->grp;
295
296 /* unlink request */
297 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
298 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
299
300 if (grp->grp_first == req)
301 grp->grp_first = req->grp_next;
302
303 aio_grp_dec (grp);
304 }
305
306 if (req->self) 790 if (req->self)
307 { 791 {
308 sv_unmagic (req->self, PERL_MAGIC_ext); 792 sv_unmagic (req->self, PERL_MAGIC_ext);
309 SvREFCNT_dec (req->self); 793 SvREFCNT_dec (req->self);
310 } 794 }
311 795
312 SvREFCNT_dec (req->data);
313 SvREFCNT_dec (req->fh); 796 SvREFCNT_dec (req->sv1);
314 SvREFCNT_dec (req->fh2); 797 SvREFCNT_dec (req->sv2);
798 SvREFCNT_dec (req->sv3);
799 SvREFCNT_dec (req->sv4);
315 SvREFCNT_dec (req->callback); 800 SvREFCNT_dec (req->callback);
316 Safefree (req->statdata);
317 801
318 if (req->type == REQ_READDIR && req->result >= 0)
319 free (req->data2ptr);
320
321 Safefree (req); 802 free (req);
322} 803}
323 804
324static void req_cancel (aio_req req) 805static void
806req_cancel_subs (aio_req grp)
325{ 807{
326 req->cancelled = 1;
327
328 if (req->type == REQ_GROUP) 808 if (grp->type != EIO_GROUP)
809 return;
810
811 SvREFCNT_dec (grp->sv2);
812 grp->sv2 = 0;
813
814 eio_grp_cancel (grp);
815}
816
817static void ecb_cold
818create_respipe (void)
819{
820 if (s_epipe_renew (&respipe))
821 croak ("IO::AIO: unable to initialize result pipe");
822}
823
824static void
825poll_wait (void)
826{
827 while (eio_nreqs ())
329 { 828 {
330 aio_req sub; 829 int size;
331 830
332 for (sub = req->grp_first; sub; sub = sub->grp_next) 831 X_LOCK (EIO_POOL->reslock);
333 req_cancel (sub); 832 size = EIO_POOL->res_queue.size;
833 X_UNLOCK (EIO_POOL->reslock);
834
835 if (size)
836 return;
837
838 etp_maybe_start_thread (EIO_POOL);
839
840 s_epipe_wait (&respipe);
334 } 841 }
335} 842}
336 843
337static int poll_cb () 844static int
845poll_cb (void)
338{ 846{
339 dSP;
340 int count = 0;
341 int do_croak = 0;
342 aio_req req;
343
344 for (;;) 847 for (;;)
345 { 848 {
346 pthread_mutex_lock (&reslock); 849 int res = eio_poll ();
347 req = ress;
348 850
349 if (req) 851 if (res > 0)
852 croak (0);
853
854 if (!max_outstanding || max_outstanding > eio_nreqs ())
855 return res;
856
857 poll_wait ();
858 }
859}
860
861static void ecb_cold
862reinit (void)
863{
864 create_respipe ();
865
866 if (eio_init (want_poll, done_poll) < 0)
867 croak ("IO::AIO: unable to initialise eio library");
868}
869
870/*****************************************************************************/
871
872static SV *
873get_cb (SV *cb_sv)
874{
875 SvGETMAGIC (cb_sv);
876 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
877}
878
879static aio_req ecb_noinline
880dreq (SV *callback)
881{
882 SV *cb_cv;
883 aio_req req;
884 int req_pri = next_pri;
885 next_pri = EIO_PRI_DEFAULT;
886
887 cb_cv = get_cb (callback);
888
889 req = calloc (sizeof (*req), 1);
890 if (!req)
891 croak ("out of memory during eio_req allocation");
892
893 req->callback = SvREFCNT_inc (cb_cv);
894 req->pri = req_pri;
895
896 return req;
897}
898
899#define dREQ \
900 aio_req req = dreq (callback); \
901
902#define REQ_SEND \
903 PUTBACK; \
904 req_submit (req); \
905 SPAGAIN; \
906 \
907 if (GIMME_V != G_VOID) \
908 XPUSHs (req_sv (req, aio_req_stash));
909
910ecb_inline void
911req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
912{
913 if (expect_false (SvROK (path)))
914 {
915 SV *rv = SvRV (path);
916 SV *wdob;
917
918 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
350 { 919 {
351 ress = req->next; 920 path = AvARRAY (rv)[1];
921 wdob = AvARRAY (rv)[0];
352 922
353 if (!ress) 923 if (SvOK (wdob))
354 { 924 {
355 /* read any signals sent by the worker threads */ 925 *wd = SvAIO_WD (wdob);
356 char buf [32]; 926 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
357 while (read (respipe [0], buf, 32) == 32)
358 ;
359
360 rese = 0;
361 } 927 }
928 else
929 *wd = EIO_INVALID_WD;
362 } 930 }
363 931 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
364 pthread_mutex_unlock (&reslock);
365
366 if (!req)
367 break;
368
369 --nreqs;
370
371 if (req->type == REQ_QUIT)
372 started--;
373 else if (req->type == REQ_GROUP && req->length)
374 { 932 {
375 req->fd = 1; /* mark request as delayed */ 933 *wd = (aio_wd)(long)SvIVX (rv);
376 continue; 934 *wdsv = SvREFCNT_inc_NN (rv);
935 *ptr = ".";
936 return; /* path set to "." */
377 } 937 }
378 else 938 else
379 { 939 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
380 if (req->type == REQ_READ)
381 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
382
383 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
384 SvREADONLY_off (req->data);
385
386 if (req->statdata)
387 {
388 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
389 PL_laststatval = req->result;
390 PL_statcache = *(req->statdata);
391 }
392
393 req_invoke (req);
394
395 count++;
396 }
397
398 req_free (req);
399 } 940 }
400 941
401 return count; 942 *pathsv = newSVsv (path);
943 *ptr = SvPVbyte_nolen (*pathsv);
402} 944}
403 945
404static void *aio_proc(void *arg); 946static void ecb_noinline
405 947req_set_path1 (aio_req req, SV *path)
406static void start_thread (void)
407{ 948{
408 sigset_t fullsigset, oldsigset; 949 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
409 pthread_t tid;
410 pthread_attr_t attr;
411
412 pthread_attr_init (&attr);
413 pthread_attr_setstacksize (&attr, STACKSIZE);
414 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
415
416 sigfillset (&fullsigset);
417 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
418
419 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
420 started++;
421
422 sigprocmask (SIG_SETMASK, &oldsigset, 0);
423} 950}
424 951
425static void req_send (aio_req req) 952static void ecb_noinline
953req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
426{ 954{
427 while (started < wanted && nreqs >= started) 955 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
428 start_thread ();
429 956
430 ++nreqs; 957 switch (SvTYPE (rv))
431
432 pthread_mutex_lock (&reqlock);
433
434 req->next = 0;
435
436 if (reqe)
437 { 958 {
438 reqe->next = req; 959 case SVt_PVIO:
439 reqe = req; 960 case SVt_PVLV:
961 case SVt_PVGV:
962 req->type = type_fh;
963 req->sv1 = newSVsv (fh_or_path);
964 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
965 break;
966
967 default:
968 req->type = type_path;
969 req_set_path1 (req, fh_or_path);
970 break;
440 } 971 }
441 else
442 reqe = reqs = req;
443
444 pthread_cond_signal (&reqwait);
445 pthread_mutex_unlock (&reqlock);
446
447 if (nreqs > max_outstanding)
448 for (;;)
449 {
450 poll_cb ();
451
452 if (nreqs <= max_outstanding)
453 break;
454
455 poll_wait ();
456 }
457} 972}
458 973
459static void end_thread (void) 974XS(boot_IO__AIO) ecb_cold;
460{
461 aio_req req;
462 Newz (0, req, 1, aio_cb);
463 req->type = REQ_QUIT;
464 975
465 req_send (req); 976MODULE = IO::AIO PACKAGE = IO::AIO
466}
467 977
468static void min_parallel (int nthreads) 978PROTOTYPES: ENABLE
469{
470 if (wanted < nthreads)
471 wanted = nthreads;
472}
473 979
474static void max_parallel (int nthreads) 980BOOT:
475{ 981{
476 int cur = started; 982 static const struct {
983 const char *name;
984 IV iv;
985 } *civ, const_iv[] = {
986# define const_niv(name, value) { # name, (IV) value },
987# define const_iv(name) { # name, (IV) name },
988# define const_eio(name) { # name, (IV) EIO_ ## name },
477 989
478 if (wanted > nthreads) 990 /* you have to re-run ./gendef0 after adding/removing any constants here */
479 wanted = nthreads; 991 /* the first block can be undef if missing */
992 const_iv (ENOSYS)
993 const_iv (EXDEV)
994 const_iv (EBADR)
480 995
481 while (cur > wanted) 996 /* for lseek */
482 { 997 const_iv (SEEK_DATA)
483 end_thread (); 998 const_iv (SEEK_HOLE)
484 cur--;
485 }
486 999
487 while (started > wanted) 1000 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
488 { 1001 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
489 poll_wait (); 1002 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
490 poll_cb (); 1003 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
491 } 1004 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
492} 1005 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
493 1006
494static void create_pipe () 1007 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
495{ 1008 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
496 if (pipe (respipe)) 1009 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
497 croak ("unable to initialize result pipe"); 1010 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1011 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
498 1012
499 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 1013 /* the second block will be 0 when missing */
500 croak ("cannot set result pipe to nonblocking mode"); 1014 const_iv (O_RDONLY)
1015 const_iv (O_WRONLY)
1016 const_iv (O_RDWR)
1017 const_iv (O_CREAT)
1018 const_iv (O_TRUNC)
1019 const_iv (O_EXCL)
1020 const_iv (O_APPEND)
501 1021
502 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 1022 const_iv (O_ASYNC)
503 croak ("cannot set result pipe to nonblocking mode"); 1023 const_iv (O_DIRECT)
504} 1024 const_iv (O_NOATIME)
505 1025
506/*****************************************************************************/ 1026 const_iv (O_CLOEXEC)
507/* work around various missing functions */ 1027 const_iv (O_NOCTTY)
1028 const_iv (O_NOFOLLOW)
1029 const_iv (O_NONBLOCK)
1030 const_iv (O_EXEC)
1031 const_iv (O_SEARCH)
1032 const_iv (O_DIRECTORY)
1033 const_iv (O_DSYNC)
1034 const_iv (O_RSYNC)
1035 const_iv (O_SYNC)
1036 const_iv (O_PATH)
1037 const_iv (O_TMPFILE)
1038 const_iv (O_TTY_INIT)
508 1039
509#if !HAVE_PREADWRITE 1040 const_iv (S_IFIFO)
510# define pread aio_pread 1041 const_iv (S_IFCHR)
511# define pwrite aio_pwrite 1042 const_iv (S_IFBLK)
1043 const_iv (S_IFLNK)
1044 const_iv (S_IFREG)
1045 const_iv (S_IFDIR)
1046 const_iv (S_IFWHT)
1047 const_iv (S_IFSOCK)
1048 const_iv (S_IFMT)
512 1049
513/* 1050 const_iv (ST_RDONLY)
514 * make our pread/pwrite safe against themselves, but not against 1051 const_iv (ST_NOSUID)
515 * normal read/write by using a mutex. slows down execution a lot, 1052 const_iv (ST_NODEV)
516 * but that's your problem, not mine. 1053 const_iv (ST_NOEXEC)
517 */ 1054 const_iv (ST_SYNCHRONOUS)
518static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; 1055 const_iv (ST_MANDLOCK)
1056 const_iv (ST_WRITE)
1057 const_iv (ST_APPEND)
1058 const_iv (ST_IMMUTABLE)
1059 const_iv (ST_NOATIME)
1060 const_iv (ST_NODIRATIME)
1061 const_iv (ST_RELATIME)
519 1062
520static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 1063 const_iv (PROT_NONE)
521{ 1064 const_iv (PROT_EXEC)
522 ssize_t res; 1065 const_iv (PROT_READ)
523 off_t ooffset; 1066 const_iv (PROT_WRITE)
524 1067
525 pthread_mutex_lock (&preadwritelock); 1068 const_iv (MAP_PRIVATE)
526 ooffset = lseek (fd, 0, SEEK_CUR); 1069 const_iv (MAP_SHARED)
527 lseek (fd, offset, SEEK_SET); 1070 const_iv (MAP_FIXED)
528 res = read (fd, buf, count); 1071 const_iv (MAP_ANONYMOUS)
529 lseek (fd, ooffset, SEEK_SET);
530 pthread_mutex_unlock (&preadwritelock);
531 1072
532 return res; 1073 /* linuxish */
533} 1074 const_iv (MAP_LOCKED)
1075 const_iv (MAP_NORESERVE)
1076 const_iv (MAP_POPULATE)
1077 const_iv (MAP_NONBLOCK)
1078 const_iv (MAP_GROWSDOWN)
1079 const_iv (MAP_32BIT)
1080 const_iv (MAP_HUGETLB)
1081 const_iv (MAP_STACK)
534 1082
535static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1083 const_iv (F_DUPFD_CLOEXEC)
536{
537 ssize_t res;
538 off_t ooffset;
539 1084
540 pthread_mutex_lock (&preadwritelock); 1085 const_iv (F_OFD_GETLK)
541 ooffset = lseek (fd, 0, SEEK_CUR); 1086 const_iv (F_OFD_SETLK)
542 lseek (fd, offset, SEEK_SET); 1087 const_iv (F_OFD_GETLKW)
543 res = write (fd, buf, count);
544 lseek (fd, offset, SEEK_SET);
545 pthread_mutex_unlock (&preadwritelock);
546 1088
547 return res; 1089 const_iv (FIFREEZE)
548} 1090 const_iv (FITHAW)
549#endif 1091 const_iv (FITRIM)
1092 const_iv (FICLONE)
1093 const_iv (FICLONERANGE)
1094 const_iv (FIDEDUPERANGE)
550 1095
551#if !HAVE_FDATASYNC 1096 const_iv (FS_IOC_GETFLAGS)
552# define fdatasync fsync 1097 const_iv (FS_IOC_SETFLAGS)
553#endif 1098 const_iv (FS_IOC_GETVERSION)
1099 const_iv (FS_IOC_SETVERSION)
1100 const_iv (FS_IOC_FIEMAP)
1101 const_iv (FS_IOC_FSGETXATTR)
1102 const_iv (FS_IOC_FSSETXATTR)
1103 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1104 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1105 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
554 1106
555#if !HAVE_READAHEAD 1107 const_iv (FS_KEY_DESCRIPTOR_SIZE)
556# define readahead aio_readahead
557 1108
558static ssize_t readahead (int fd, off_t offset, size_t count) 1109 const_iv (FS_SECRM_FL)
559{ 1110 const_iv (FS_UNRM_FL)
560 char readahead_buf[4096]; 1111 const_iv (FS_COMPR_FL)
1112 const_iv (FS_SYNC_FL)
1113 const_iv (FS_IMMUTABLE_FL)
1114 const_iv (FS_APPEND_FL)
1115 const_iv (FS_NODUMP_FL)
1116 const_iv (FS_NOATIME_FL)
1117 const_iv (FS_DIRTY_FL)
1118 const_iv (FS_COMPRBLK_FL)
1119 const_iv (FS_NOCOMP_FL)
1120 const_iv (FS_ENCRYPT_FL)
1121 const_iv (FS_BTREE_FL)
1122 const_iv (FS_INDEX_FL)
1123 const_iv (FS_JOURNAL_DATA_FL)
1124 const_iv (FS_NOTAIL_FL)
1125 const_iv (FS_DIRSYNC_FL)
1126 const_iv (FS_TOPDIR_FL)
1127 const_iv (FS_FL_USER_MODIFIABLE)
561 1128
562 while (count > 0) 1129 const_iv (FS_XFLAG_REALTIME)
563 { 1130 const_iv (FS_XFLAG_PREALLOC)
564 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 1131 const_iv (FS_XFLAG_IMMUTABLE)
1132 const_iv (FS_XFLAG_APPEND)
1133 const_iv (FS_XFLAG_SYNC)
1134 const_iv (FS_XFLAG_NOATIME)
1135 const_iv (FS_XFLAG_NODUMP)
1136 const_iv (FS_XFLAG_RTINHERIT)
1137 const_iv (FS_XFLAG_PROJINHERIT)
1138 const_iv (FS_XFLAG_NOSYMLINKS)
1139 const_iv (FS_XFLAG_EXTSIZE)
1140 const_iv (FS_XFLAG_EXTSZINHERIT)
1141 const_iv (FS_XFLAG_NODEFRAG)
1142 const_iv (FS_XFLAG_FILESTREAM)
1143 const_iv (FS_XFLAG_DAX)
1144 const_iv (FS_XFLAG_HASATTR)
565 1145
566 pread (fd, readahead_buf, len, offset); 1146 const_iv (FIEMAP_FLAG_SYNC)
567 offset += len; 1147 const_iv (FIEMAP_FLAG_XATTR)
568 count -= len; 1148 const_iv (FIEMAP_FLAGS_COMPAT)
569 } 1149 const_iv (FIEMAP_EXTENT_LAST)
1150 const_iv (FIEMAP_EXTENT_UNKNOWN)
1151 const_iv (FIEMAP_EXTENT_DELALLOC)
1152 const_iv (FIEMAP_EXTENT_ENCODED)
1153 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1154 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1155 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1156 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1157 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1158 const_iv (FIEMAP_EXTENT_MERGED)
1159 const_iv (FIEMAP_EXTENT_SHARED)
570 1160
571 errno = 0; 1161 const_iv (SPLICE_F_MOVE)
572} 1162 const_iv (SPLICE_F_NONBLOCK)
573#endif 1163 const_iv (SPLICE_F_MORE)
1164 const_iv (SPLICE_F_GIFT)
574 1165
575#if !HAVE_READDIR_R 1166 /* these are libeio constants, and are independent of gendef0 */
576# define readdir_r aio_readdir_r 1167 const_eio (SEEK_SET)
1168 const_eio (SEEK_CUR)
1169 const_eio (SEEK_END)
577 1170
578static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 1171 const_eio (MCL_FUTURE)
579 1172 const_eio (MCL_CURRENT)
580static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
581{
582 struct dirent *e;
583 int errorno;
584 1173
585 pthread_mutex_lock (&readdirlock); 1174 const_eio (MS_ASYNC)
1175 const_eio (MS_INVALIDATE)
1176 const_eio (MS_SYNC)
586 1177
587 e = readdir (dirp); 1178 const_eio (MT_MODIFY)
588 errorno = errno;
589 1179
590 if (e) 1180 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
591 { 1181 const_eio (SYNC_FILE_RANGE_WRITE)
592 *res = ent; 1182 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
593 strcpy (ent->d_name, e->d_name);
594 }
595 else
596 *res = 0;
597 1183
598 pthread_mutex_unlock (&readdirlock); 1184 const_eio (FALLOC_FL_KEEP_SIZE)
1185 const_eio (FALLOC_FL_PUNCH_HOLE)
1186 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1187 const_eio (FALLOC_FL_ZERO_RANGE)
1188 const_eio (FALLOC_FL_INSERT_RANGE)
1189 const_eio (FALLOC_FL_UNSHARE_RANGE)
599 1190
600 errno = errorno; 1191 const_eio (RENAME_NOREPLACE)
601 return e ? 0 : -1; 1192 const_eio (RENAME_EXCHANGE)
602} 1193 const_eio (RENAME_WHITEOUT)
603#endif
604 1194
605/* sendfile always needs emulation */ 1195 const_eio (READDIR_DENTS)
606static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1196 const_eio (READDIR_DIRS_FIRST)
607{ 1197 const_eio (READDIR_STAT_ORDER)
608 ssize_t res; 1198 const_eio (READDIR_FOUND_UNKNOWN)
609 1199
610 if (!count) 1200 const_eio (DT_UNKNOWN)
611 return 0; 1201 const_eio (DT_FIFO)
612 1202 const_eio (DT_CHR)
613#if HAVE_SENDFILE 1203 const_eio (DT_DIR)
614# if __linux 1204 const_eio (DT_BLK)
615 res = sendfile (ofd, ifd, &offset, count); 1205 const_eio (DT_REG)
616 1206 const_eio (DT_LNK)
617# elif __freebsd 1207 const_eio (DT_SOCK)
618 /* 1208 const_eio (DT_WHT)
619 * Of course, the freebsd sendfile is a dire hack with no thoughts
620 * wasted on making it similar to other I/O functions.
621 */
622 {
623 off_t sbytes;
624 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
625
626 if (res < 0 && sbytes)
627 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
628 res = sbytes;
629 } 1209 };
630 1210
631# elif __hpux 1211 aio_stash = gv_stashpv ("IO::AIO" , 1);
632 res = sendfile (ofd, ifd, offset, count, 0, 0); 1212 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1213 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1214 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
633 1215
634# elif __solaris 1216 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
635 { 1217 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
636 struct sendfilevec vec;
637 size_t sbytes;
638 1218
639 vec.sfv_fd = ifd; 1219 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
640 vec.sfv_flag = 0;
641 vec.sfv_off = offset;
642 vec.sfv_len = count;
643 1220
644 res = sendfilev (ofd, &vec, 1, &sbytes); 1221 reinit ();
1222}
645 1223
646 if (res < 0 && sbytes) 1224void
1225reinit ()
1226 PROTOTYPE:
1227
1228void
1229max_poll_reqs (unsigned int nreqs)
1230 PROTOTYPE: $
1231 CODE:
1232 eio_set_max_poll_reqs (nreqs);
1233
1234void
1235max_poll_time (double nseconds)
1236 PROTOTYPE: $
1237 CODE:
1238 eio_set_max_poll_time (nseconds);
1239
1240void
1241min_parallel (unsigned int nthreads)
1242 PROTOTYPE: $
1243 CODE:
1244 eio_set_min_parallel (nthreads);
1245
1246void
1247max_parallel (unsigned int nthreads)
1248 PROTOTYPE: $
1249 CODE:
1250 eio_set_max_parallel (nthreads);
1251
1252void
1253max_idle (unsigned int nthreads)
1254 PROTOTYPE: $
1255 CODE:
1256 eio_set_max_idle (nthreads);
1257
1258void
1259idle_timeout (unsigned int seconds)
1260 PROTOTYPE: $
1261 CODE:
1262 eio_set_idle_timeout (seconds);
1263
1264void
1265max_outstanding (unsigned int maxreqs)
1266 PROTOTYPE: $
1267 CODE:
1268 max_outstanding = maxreqs;
1269
1270void
1271aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1272 PPCODE:
1273{
1274 dREQ;
1275
1276 req->type = EIO_WD_OPEN;
1277 req_set_path1 (req, pathname);
1278
1279 REQ_SEND;
1280}
1281
1282void
1283aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1284 PPCODE:
1285{
1286 dREQ;
1287
1288 req->type = EIO_OPEN;
1289 req_set_path1 (req, pathname);
1290 req->int1 = flags;
1291 req->int2 = mode;
1292
1293 REQ_SEND;
1294}
1295
1296void
1297aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1298 ALIAS:
1299 aio_fsync = EIO_FSYNC
1300 aio_fdatasync = EIO_FDATASYNC
1301 aio_syncfs = EIO_SYNCFS
1302 PPCODE:
1303{
1304 int fd = s_fileno_croak (fh, 0);
1305 dREQ;
1306
1307 req->type = ix;
1308 req->sv1 = newSVsv (fh);
1309 req->int1 = fd;
1310
1311 REQ_SEND;
1312}
1313
1314void
1315aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1316 PPCODE:
1317{
1318 int fd = s_fileno_croak (fh, 0);
1319 dREQ;
1320
1321 req->type = EIO_SYNC_FILE_RANGE;
1322 req->sv1 = newSVsv (fh);
1323 req->int1 = fd;
1324 req->offs = offset;
647 res = sbytes; 1325 req->size = nbytes;
648 } 1326 req->int2 = flags;
649 1327
650# endif 1328 REQ_SEND;
1329}
1330
1331void
1332aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1333 PPCODE:
1334{
1335 int fd = s_fileno_croak (fh, 0);
1336 dREQ;
1337
1338 req->type = EIO_FALLOCATE;
1339 req->sv1 = newSVsv (fh);
1340 req->int1 = fd;
1341 req->int2 = mode;
1342 req->offs = offset;
1343 req->size = len;
1344
1345 REQ_SEND;
1346}
1347
1348void
1349aio_close (SV *fh, SV *callback = &PL_sv_undef)
1350 PPCODE:
1351{
1352 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1353 int fd = s_fileno_croak (fh, 0);
1354 dREQ;
1355
1356 if (expect_false (close_fd < 0))
1357 {
1358 int pipefd [2];
1359
1360 if (
1361#ifdef _WIN32
1362 _pipe (pipefd, 1, _O_BINARY) < 0
651#else 1363#else
652 res = -1; 1364 pipe (pipefd) < 0
653 errno = ENOSYS; 1365 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
654#endif 1366#endif
655 1367 || close (pipefd [1]) < 0
656 if (res < 0
657 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
658#if __solaris
659 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
660#endif
661 )
662 )
663 {
664 /* emulate sendfile. this is a major pain in the ass */
665 char buf[4096];
666 res = 0;
667
668 while (count)
669 {
670 ssize_t cnt;
671
672 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
673
674 if (cnt <= 0)
675 { 1368 )
676 if (cnt && !res) res = -1; 1369 abort (); /*D*/
677 break;
678 }
679 1370
680 cnt = write (ofd, buf, cnt); 1371 close_fd = pipefd [0];
681
682 if (cnt <= 0)
683 {
684 if (cnt && !res) res = -1;
685 break;
686 }
687
688 offset += cnt;
689 res += cnt;
690 count -= cnt;
691 }
692 }
693
694 return res;
695}
696
697/* read a full directory */
698static int scandir_ (const char *path, void **namesp)
699{
700 DIR *dirp = opendir (path);
701 union
702 {
703 struct dirent d;
704 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
705 } u;
706 struct dirent *entp;
707 char *name, *names;
708 int memlen = 4096;
709 int memofs = 0;
710 int res = 0;
711 int errorno;
712
713 if (!dirp)
714 return -1;
715
716 names = malloc (memlen);
717
718 for (;;)
719 {
720 errno = 0, readdir_r (dirp, &u.d, &entp);
721
722 if (!entp)
723 break;
724
725 name = entp->d_name;
726
727 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
728 {
729 int len = strlen (name) + 1;
730
731 res++;
732
733 while (memofs + len > memlen)
734 {
735 memlen *= 2;
736 names = realloc (names, memlen);
737 if (!names)
738 break;
739 }
740
741 memcpy (names + memofs, name, len);
742 memofs += len;
743 }
744 }
745
746 errorno = errno;
747 closedir (dirp);
748
749 if (errorno)
750 {
751 free (names);
752 errno = errorno;
753 res = -1;
754 }
755
756 *namesp = (void *)names;
757 return res;
758}
759
760/*****************************************************************************/
761
762static void *aio_proc (void *thr_arg)
763{
764 aio_req req;
765 int type;
766
767 do
768 {
769 pthread_mutex_lock (&reqlock);
770
771 for (;;)
772 {
773 req = reqs;
774
775 if (reqs)
776 {
777 reqs = reqs->next;
778 if (!reqs) reqe = 0;
779 }
780
781 if (req)
782 break;
783
784 pthread_cond_wait (&reqwait, &reqlock);
785 }
786
787 pthread_mutex_unlock (&reqlock);
788
789 errno = 0; /* strictly unnecessary */
790
791 if (!req->cancelled)
792 switch (type = req->type) /* remember type for QUIT check */
793 {
794 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
795 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
796
797 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
798 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
799
800 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
801 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
802 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
803
804 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
805 case REQ_CLOSE: req->result = close (req->fd); break;
806 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
807 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
808 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
809 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
810 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
811
812 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
813 case REQ_FSYNC: req->result = fsync (req->fd); break;
814 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
815
816 case REQ_SLEEP:
817 {
818 struct timeval tv;
819
820 tv.tv_sec = req->fd;
821 tv.tv_usec = req->fd2;
822
823 req->result = select (0, 0, 0, 0, &tv);
824 }
825
826 case REQ_GROUP:
827 case REQ_NOP:
828 case REQ_QUIT:
829 break;
830
831 default:
832 req->result = ENOSYS;
833 break;
834 } 1372 }
835 1373
836 req->errorno = errno; 1374 req->type = EIO_DUP2;
837 1375 req->int1 = close_fd;
838 pthread_mutex_lock (&reslock); 1376 req->sv2 = newSVsv (fh);
839
840 req->next = 0; 1377 req->int2 = fd;
841 1378
842 if (rese) 1379 REQ_SEND;
843 {
844 rese->next = req;
845 rese = req;
846 }
847 else
848 {
849 rese = ress = req;
850
851 /* write a dummy byte to the pipe so fh becomes ready */
852 write (respipe [1], &respipe, 1);
853 }
854
855 pthread_mutex_unlock (&reslock);
856 }
857 while (type != REQ_QUIT);
858
859 return 0;
860} 1380}
861 1381
862/*****************************************************************************/
863
864static void atfork_prepare (void)
865{
866 pthread_mutex_lock (&reqlock);
867 pthread_mutex_lock (&reslock);
868#if !HAVE_PREADWRITE
869 pthread_mutex_lock (&preadwritelock);
870#endif
871#if !HAVE_READDIR_R
872 pthread_mutex_lock (&readdirlock);
873#endif
874}
875
876static void atfork_parent (void)
877{
878#if !HAVE_READDIR_R
879 pthread_mutex_unlock (&readdirlock);
880#endif
881#if !HAVE_PREADWRITE
882 pthread_mutex_unlock (&preadwritelock);
883#endif
884 pthread_mutex_unlock (&reslock);
885 pthread_mutex_unlock (&reqlock);
886}
887
888static void atfork_child (void)
889{
890 aio_req prv;
891
892 started = 0;
893
894 while (reqs)
895 {
896 prv = reqs;
897 reqs = prv->next;
898 req_free (prv);
899 }
900
901 reqs = reqe = 0;
902
903 while (ress)
904 {
905 prv = ress;
906 ress = prv->next;
907 req_free (prv);
908 }
909
910 ress = rese = 0;
911
912 close (respipe [0]);
913 close (respipe [1]);
914 create_pipe ();
915
916 atfork_parent ();
917}
918
919#define dREQ \
920 aio_req req; \
921 \
922 if (SvOK (callback) && !SvROK (callback)) \
923 croak ("callback must be undef or of reference type"); \
924 \
925 Newz (0, req, 1, aio_cb); \
926 if (!req) \
927 croak ("out of memory during aio_req allocation"); \
928 \
929 req->callback = newSVsv (callback)
930
931#define REQ_SEND \
932 req_send (req); \
933 \
934 if (GIMME_V != G_VOID) \
935 XPUSHs (req_sv (req, AIO_REQ_KLASS));
936
937MODULE = IO::AIO PACKAGE = IO::AIO
938
939PROTOTYPES: ENABLE
940
941BOOT:
942{
943 HV *stash = gv_stashpv ("IO::AIO", 1);
944 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
945 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
946 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
947
948 create_pipe ();
949 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
950}
951
952void 1382void
953min_parallel (nthreads) 1383aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
954 int nthreads
955 PROTOTYPE: $
956
957void
958max_parallel (nthreads)
959 int nthreads
960 PROTOTYPE: $
961
962int
963max_outstanding (nreqs)
964 int nreqs
965 PROTOTYPE: $
966 CODE: 1384 PPCODE:
967 RETVAL = max_outstanding;
968 max_outstanding = nreqs;
969
970void
971aio_open (pathname,flags,mode,callback=&PL_sv_undef)
972 SV * pathname
973 int flags
974 int mode
975 SV * callback
976 PROTOTYPE: $$$;$
977 PPCODE:
978{ 1385{
1386 int fd = s_fileno_croak (fh, 0);
979 dREQ; 1387 dREQ;
980 1388
981 req->type = REQ_OPEN; 1389 req->type = EIO_SEEK;
982 req->data = newSVsv (pathname); 1390 req->sv1 = newSVsv (fh);
983 req->dataptr = SvPVbyte_nolen (req->data); 1391 req->int1 = fd;
984 req->fd = flags; 1392 req->offs = SvVAL64 (offset);
985 req->mode = mode; 1393 req->int2 = whence;
986 1394
987 REQ_SEND; 1395 REQ_SEND;
988} 1396}
989 1397
990void 1398void
991aio_close (fh,callback=&PL_sv_undef) 1399aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
992 SV * fh
993 SV * callback
994 PROTOTYPE: $;$
995 ALIAS: 1400 ALIAS:
996 aio_close = REQ_CLOSE
997 aio_fsync = REQ_FSYNC
998 aio_fdatasync = REQ_FDATASYNC
999 PPCODE:
1000{
1001 dREQ;
1002
1003 req->type = ix;
1004 req->fh = newSVsv (fh);
1005 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1006
1007 REQ_SEND (req);
1008}
1009
1010void
1011aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1012 SV * fh
1013 UV offset
1014 UV length
1015 SV * data
1016 UV dataoffset
1017 SV * callback
1018 ALIAS:
1019 aio_read = REQ_READ 1401 aio_read = EIO_READ
1020 aio_write = REQ_WRITE 1402 aio_write = EIO_WRITE
1021 PROTOTYPE: $$$$$;$
1022 PPCODE: 1403 PPCODE:
1023{ 1404{
1024 aio_req req;
1025 STRLEN svlen; 1405 STRLEN svlen;
1406 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026 char *svptr = SvPVbyte (data, svlen); 1407 char *svptr = SvPVbyte (data, svlen);
1027 1408 UV len = SvUV (length);
1028 SvUPGRADE (data, SVt_PV);
1029 SvPOK_on (data);
1030 1409
1031 if (dataoffset < 0) 1410 if (dataoffset < 0)
1032 dataoffset += svlen; 1411 dataoffset += svlen;
1033 1412
1034 if (dataoffset < 0 || dataoffset > svlen) 1413 if (dataoffset < 0 || dataoffset > svlen)
1035 croak ("data offset outside of string"); 1414 croak ("dataoffset outside of data scalar");
1036 1415
1037 if (ix == REQ_WRITE) 1416 if (ix == EIO_WRITE)
1038 { 1417 {
1039 /* write: check length and adjust. */ 1418 /* write: check length and adjust. */
1040 if (length < 0 || length + dataoffset > svlen) 1419 if (!SvOK (length) || len + dataoffset > svlen)
1041 length = svlen - dataoffset; 1420 len = svlen - dataoffset;
1042 } 1421 }
1043 else 1422 else
1044 { 1423 {
1045 /* read: grow scalar as necessary */ 1424 /* read: check type and grow scalar as necessary */
1425 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1046 svptr = SvGROW (data, length + dataoffset); 1426 svptr = sv_grow (data, len + dataoffset + 1);
1427 else if (SvCUR (data) < len + dataoffset)
1428 croak ("length + dataoffset outside of scalar, and cannot grow");
1047 } 1429 }
1048
1049 if (length < 0)
1050 croak ("length must not be negative");
1051 1430
1052 { 1431 {
1053 dREQ; 1432 dREQ;
1054 1433
1055 req->type = ix; 1434 req->type = ix;
1056 req->fh = newSVsv (fh); 1435 req->sv1 = newSVsv (fh);
1057 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1436 req->int1 = fd;
1058 : IoOFP (sv_2io (fh))); 1437 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059 req->offset = offset; 1438 req->size = len;
1060 req->length = length;
1061 req->data = SvREFCNT_inc (data); 1439 req->sv2 = SvREFCNT_inc (data);
1062 req->dataptr = (char *)svptr + dataoffset; 1440 req->ptr2 = (char *)svptr + dataoffset;
1441 req->stroffset = dataoffset;
1063 1442
1064 if (!SvREADONLY (data)) 1443 if (!SvREADONLY (data))
1065 { 1444 {
1066 SvREADONLY_on (data); 1445 SvREADONLY_on (data);
1067 req->data2ptr = (void *)data; 1446 req->flags |= FLAG_SV2_RO_OFF;
1068 } 1447 }
1069 1448
1070 REQ_SEND; 1449 REQ_SEND;
1071 } 1450 }
1072} 1451}
1073 1452
1074void 1453void
1075aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1454aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1076 SV * out_fh 1455 ALIAS:
1077 SV * in_fh 1456 aio_ioctl = EIO_IOCTL
1078 UV in_offset 1457 aio_fcntl = EIO_FCNTL
1079 UV length
1080 SV * callback
1081 PROTOTYPE: $$$$;$
1082 PPCODE: 1458 PPCODE:
1083{ 1459{
1084 dREQ; 1460 int fd = s_fileno_croak (fh, 0);
1461 char *svptr;
1085 1462
1086 req->type = REQ_SENDFILE; 1463 if (SvPOK (arg) || !SvNIOK (arg))
1087 req->fh = newSVsv (out_fh);
1088 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1089 req->fh2 = newSVsv (in_fh);
1090 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1091 req->offset = in_offset;
1092 req->length = length;
1093
1094 REQ_SEND;
1095}
1096
1097void
1098aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1099 SV * fh
1100 UV offset
1101 IV length
1102 SV * callback
1103 PROTOTYPE: $$$;$
1104 PPCODE:
1105{
1106 dREQ;
1107
1108 req->type = REQ_READAHEAD;
1109 req->fh = newSVsv (fh);
1110 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1111 req->offset = offset;
1112 req->length = length;
1113
1114 REQ_SEND;
1115}
1116
1117void
1118aio_stat (fh_or_path,callback=&PL_sv_undef)
1119 SV * fh_or_path
1120 SV * callback
1121 ALIAS:
1122 aio_stat = REQ_STAT
1123 aio_lstat = REQ_LSTAT
1124 PPCODE:
1125{
1126 dREQ;
1127
1128 New (0, req->statdata, 1, Stat_t);
1129 if (!req->statdata)
1130 { 1464 {
1131 req_free (req); 1465 STRLEN svlen;
1132 croak ("out of memory during aio_req->statdata allocation"); 1466 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1133 } 1467#ifdef IOCPARM_LEN
1468 STRLEN need = IOCPARM_LEN (request);
1469#else
1470 STRLEN need = 256;
1471#endif
1134 1472
1135 if (SvPOK (fh_or_path)) 1473 if (svlen < need)
1136 { 1474 svptr = SvGROW (arg, need);
1137 req->type = ix;
1138 req->data = newSVsv (fh_or_path);
1139 req->dataptr = SvPVbyte_nolen (req->data);
1140 } 1475 }
1141 else 1476 else
1477 svptr = (char *)SvIV (arg);
1478
1142 { 1479 {
1480 dREQ;
1481
1143 req->type = REQ_FSTAT; 1482 req->type = ix;
1144 req->fh = newSVsv (fh_or_path); 1483 req->sv1 = newSVsv (fh);
1145 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1484 req->int1 = fd;
1485 req->int2 = (long)request;
1486 req->sv2 = SvREFCNT_inc (arg);
1487 req->ptr2 = svptr;
1488
1489 REQ_SEND;
1146 } 1490 }
1491}
1492
1493void
1494aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1495 ALIAS:
1496 aio_readlink = EIO_READLINK
1497 aio_realpath = EIO_REALPATH
1498 PPCODE:
1499{
1500 dREQ;
1501
1502 req->type = ix;
1503 req_set_path1 (req, pathname);
1147 1504
1148 REQ_SEND; 1505 REQ_SEND;
1149} 1506}
1150 1507
1151void 1508void
1152aio_unlink (pathname,callback=&PL_sv_undef) 1509aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1153 SV * pathname 1510 PPCODE:
1154 SV * callback 1511{
1512 int ifd = s_fileno_croak (in_fh , 0);
1513 int ofd = s_fileno_croak (out_fh, 1);
1514 dREQ;
1515
1516 req->type = EIO_SENDFILE;
1517 req->sv1 = newSVsv (out_fh);
1518 req->int1 = ofd;
1519 req->sv2 = newSVsv (in_fh);
1520 req->int2 = ifd;
1521 req->offs = in_offset;
1522 req->size = length;
1523
1524 REQ_SEND;
1525}
1526
1527void
1528aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1529 PPCODE:
1530{
1531 int fd = s_fileno_croak (fh, 0);
1532 dREQ;
1533
1534 req->type = EIO_READAHEAD;
1535 req->sv1 = newSVsv (fh);
1536 req->int1 = fd;
1537 req->offs = offset;
1538 req->size = length;
1539
1540 REQ_SEND;
1541}
1542
1543void
1544aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1155 ALIAS: 1545 ALIAS:
1546 aio_stat = EIO_STAT
1547 aio_lstat = EIO_LSTAT
1548 aio_statvfs = EIO_STATVFS
1549 PPCODE:
1550{
1551 dREQ;
1552
1553 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1554
1555 REQ_SEND;
1556}
1557
1558UV
1559major (UV dev)
1560 ALIAS:
1561 minor = 1
1562 CODE:
1563 RETVAL = ix ? minor (dev) : major (dev);
1564 OUTPUT:
1565 RETVAL
1566
1567UV
1568makedev (UV maj, UV min)
1569 CODE:
1570 RETVAL = makedev (maj, min);
1571 OUTPUT:
1572 RETVAL
1573
1574void
1575aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1576 PPCODE:
1577{
1578 dREQ;
1579
1580 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1581 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1582 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1583
1584 REQ_SEND;
1585}
1586
1587void
1588aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1589 PPCODE:
1590{
1591 dREQ;
1592
1593 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1594 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1595
1596 REQ_SEND;
1597}
1598
1599void
1600aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1601 PPCODE:
1602{
1603 dREQ;
1604
1605 req->int2 = mode;
1606 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1607
1608 REQ_SEND;
1609}
1610
1611void
1612aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1613 PPCODE:
1614{
1615 dREQ;
1616
1617 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1618 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1619 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1620
1621 REQ_SEND;
1622}
1623
1624void
1625aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1626 PPCODE:
1627{
1628 dREQ;
1629
1630 req->type = EIO_READDIR;
1631 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1632
1633 if (flags & EIO_READDIR_DENTS)
1634 req->int1 |= EIO_READDIR_CUSTOM2;
1635
1636 req_set_path1 (req, pathname);
1637
1638 REQ_SEND;
1639}
1640
1641void
1642aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1643 PPCODE:
1644{
1645 dREQ;
1646
1647 req->type = EIO_MKDIR;
1648 req->int2 = mode;
1649 req_set_path1 (req, pathname);
1650
1651 REQ_SEND;
1652}
1653
1654void
1655aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1656 ALIAS:
1156 aio_unlink = REQ_UNLINK 1657 aio_unlink = EIO_UNLINK
1157 aio_rmdir = REQ_RMDIR 1658 aio_rmdir = EIO_RMDIR
1158 aio_readdir = REQ_READDIR 1659 aio_readdir = EIO_READDIR
1159 PPCODE: 1660 PPCODE:
1160{ 1661{
1161 dREQ; 1662 dREQ;
1162 1663
1163 req->type = ix; 1664 req->type = ix;
1164 req->data = newSVsv (pathname); 1665 req_set_path1 (req, pathname);
1165 req->dataptr = SvPVbyte_nolen (req->data); 1666
1166
1167 REQ_SEND; 1667 REQ_SEND;
1168} 1668}
1169 1669
1170void 1670void
1171aio_link (oldpath,newpath,callback=&PL_sv_undef) 1671aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1172 SV * oldpath
1173 SV * newpath
1174 SV * callback
1175 ALIAS: 1672 ALIAS:
1176 aio_link = REQ_LINK 1673 aio_link = EIO_LINK
1177 aio_symlink = REQ_SYMLINK 1674 aio_symlink = EIO_SYMLINK
1178 aio_rename = REQ_RENAME 1675 aio_rename = EIO_RENAME
1179 PPCODE: 1676 PPCODE:
1180{ 1677{
1678 eio_wd wd2 = 0;
1181 dREQ; 1679 dREQ;
1182 1680
1183 req->type = ix; 1681 req->type = ix;
1184 req->fh = newSVsv (oldpath); 1682 req_set_path1 (req, oldpath);
1185 req->data2ptr = SvPVbyte_nolen (req->fh); 1683 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1186 req->data = newSVsv (newpath); 1684 req->int3 = (long)wd2;
1187 req->dataptr = SvPVbyte_nolen (req->data);
1188 1685
1189 REQ_SEND; 1686 REQ_SEND;
1190} 1687}
1191 1688
1192void 1689void
1193aio_sleep (delay,callback=&PL_sv_undef) 1690aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1194 double delay
1195 SV * callback
1196 PPCODE: 1691 PPCODE:
1197{ 1692{
1693 eio_wd wd2 = 0;
1198 dREQ; 1694 dREQ;
1199 1695
1200 req->type = REQ_SLEEP; 1696 req->type = EIO_RENAME;
1201 req->fd = delay < 0. ? 0 : delay; 1697 req_set_path1 (req, oldpath);
1202 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1698 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1203 1699 req->int2 = flags;
1700 req->int3 = (long)wd2;
1701
1204 REQ_SEND; 1702 REQ_SEND;
1205} 1703}
1206 1704
1207void 1705void
1208aio_group (callback=&PL_sv_undef) 1706aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1209 SV * callback 1707 PPCODE:
1210 PROTOTYPE: ;$ 1708{
1709 dREQ;
1710
1711 req->type = EIO_MKNOD;
1712 req->int2 = (mode_t)mode;
1713 req->offs = dev;
1714 req_set_path1 (req, pathname);
1715
1716 REQ_SEND;
1717}
1718
1719void
1720aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1721 ALIAS:
1722 aio_mtouch = EIO_MTOUCH
1723 aio_msync = EIO_MSYNC
1211 PPCODE: 1724 PPCODE:
1212{ 1725{
1726 STRLEN svlen;
1727 char *svptr = SvPVbyte (data, svlen);
1728 UV len = SvUV (length);
1729
1730 if (flags < 0)
1731 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1732
1733 if (offset < 0)
1734 offset += svlen;
1735
1736 if (offset < 0 || offset > svlen)
1737 croak ("offset outside of scalar");
1738
1739 if (!SvOK (length) || len + offset > svlen)
1740 len = svlen - offset;
1741
1742 {
1743 dREQ;
1744
1745 req->type = ix;
1746 req->sv2 = SvREFCNT_inc (data);
1747 req->ptr2 = (char *)svptr + offset;
1748 req->size = len;
1749 req->int1 = flags;
1750
1751 REQ_SEND;
1752 }
1753}
1754
1755void
1756aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1757 PPCODE:
1758{
1759 STRLEN svlen;
1760 char *svptr = SvPVbyte (data, svlen);
1761 UV len = SvUV (length);
1762
1763 if (offset < 0)
1764 offset += svlen;
1765
1766 if (offset < 0 || offset > svlen)
1767 croak ("offset outside of scalar");
1768
1769 if (!SvOK (length) || len + offset > svlen)
1770 len = svlen - offset;
1771
1772 {
1773 dREQ;
1774
1775 req->type = EIO_MLOCK;
1776 req->sv2 = SvREFCNT_inc (data);
1777 req->ptr2 = (char *)svptr + offset;
1778 req->size = len;
1779
1780 REQ_SEND;
1781 }
1782}
1783
1784void
1785aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1786 PPCODE:
1787{
1788 dREQ;
1789
1790 req->type = EIO_MLOCKALL;
1791 req->int1 = flags;
1792
1793 REQ_SEND;
1794}
1795
1796void
1797aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1798 PPCODE:
1799{
1800 int fd = s_fileno_croak (fh, 0);
1213 dREQ; 1801 dREQ;
1802
1214 req->type = REQ_GROUP; 1803 req->type = EIO_CUSTOM;
1215 req_send (req); 1804 req->sv1 = newSVsv (fh);
1216 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1805 req->int1 = fd;
1217}
1218 1806
1807 req->feed = fiemap;
1808#if HAVE_FIEMAP
1809 /* keep our fingers crossed that the next two types are 64 bit */
1810 req->offs = start;
1811 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1812 req->int2 = flags;
1813 req->int3 = SvOK (count) ? SvIV (count) : -1;
1814#endif
1815
1816 REQ_SEND;
1817}
1818
1219void 1819void
1220aio_nop (callback=&PL_sv_undef) 1820aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1221 SV * callback 1821 PPCODE:
1822{
1823 char *svptr = 0;
1824
1825 sv_clear_foreign (data);
1826
1827 if (length) /* known length, directly read into scalar */
1828 {
1829 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1830 svptr = sv_grow (data, length + 1);
1831 else if (SvCUR (data) < length)
1832 croak ("length outside of scalar, and cannot grow");
1833 else
1834 svptr = SvPVbyte_nolen (data);
1835 }
1836
1837 {
1838 dREQ;
1839
1840 req->type = EIO_SLURP;
1841 req_set_path1 (req, pathname);
1842 req->offs = offset;
1843 req->size = length;
1844 req->sv2 = SvREFCNT_inc (data);
1845 req->ptr2 = svptr;
1846
1847 if (!SvREADONLY (data))
1848 {
1849 SvREADONLY_on (data);
1850 req->flags |= FLAG_SV2_RO_OFF;
1851 }
1852
1853 REQ_SEND;
1854 }
1855}
1856
1857void
1858aio_busy (double delay, SV *callback = &PL_sv_undef)
1222 PPCODE: 1859 PPCODE:
1223{ 1860{
1224 dREQ; 1861 dREQ;
1225 1862
1226 req->type = REQ_NOP; 1863 req->type = EIO_BUSY;
1864 req->nv1 = delay < 0. ? 0. : delay;
1227 1865
1228 REQ_SEND; 1866 REQ_SEND;
1229} 1867}
1230 1868
1231void 1869void
1870aio_group (SV *callback = &PL_sv_undef)
1871 PPCODE:
1872{
1873 dREQ;
1874
1875 req->type = EIO_GROUP;
1876
1877 PUTBACK;
1878 req_submit (req);
1879 SPAGAIN;
1880
1881 XPUSHs (req_sv (req, aio_grp_stash));
1882}
1883
1884void
1885aio_nop (SV *callback = &PL_sv_undef)
1886 ALIAS:
1887 aio_nop = EIO_NOP
1888 aio_sync = EIO_SYNC
1889 PPCODE:
1890{
1891 dREQ;
1892
1893 req->type = ix;
1894
1895 REQ_SEND;
1896}
1897
1898int
1899aioreq_pri (int pri = NO_INIT)
1900 CODE:
1901 RETVAL = next_pri;
1902 if (items > 0)
1903 {
1904 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1905 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1906 next_pri = pri;
1907 }
1908 OUTPUT:
1909 RETVAL
1910
1911void
1912aioreq_nice (int nice = 0)
1913 CODE:
1914 nice = next_pri - nice;
1915 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1916 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1917 next_pri = nice;
1918
1919void
1232flush () 1920flush ()
1233 PROTOTYPE:
1234 CODE: 1921 CODE:
1235 while (nreqs) 1922 while (eio_nreqs ())
1236 { 1923 {
1237 poll_wait (); 1924 poll_wait ();
1238 poll_cb (); 1925 poll_cb ();
1239 } 1926 }
1240 1927
1241void 1928int
1242poll() 1929poll ()
1243 PROTOTYPE:
1244 CODE: 1930 CODE:
1245 if (nreqs)
1246 {
1247 poll_wait (); 1931 poll_wait ();
1248 poll_cb (); 1932 RETVAL = poll_cb ();
1249 }
1250
1251int
1252poll_fileno()
1253 PROTOTYPE:
1254 CODE:
1255 RETVAL = respipe [0];
1256 OUTPUT: 1933 OUTPUT:
1257 RETVAL 1934 RETVAL
1258 1935
1259int 1936int
1937poll_fileno ()
1938 CODE:
1939 RETVAL = s_epipe_fd (&respipe);
1940 OUTPUT:
1941 RETVAL
1942
1943int
1260poll_cb(...) 1944poll_cb (...)
1261 PROTOTYPE: 1945 PROTOTYPE:
1262 CODE: 1946 CODE:
1263 RETVAL = poll_cb (); 1947 RETVAL = poll_cb ();
1264 OUTPUT: 1948 OUTPUT:
1265 RETVAL 1949 RETVAL
1266 1950
1267void 1951void
1268poll_wait() 1952poll_wait ()
1269 PROTOTYPE:
1270 CODE: 1953 CODE:
1271 if (nreqs)
1272 poll_wait (); 1954 poll_wait ();
1273 1955
1274int 1956int
1275nreqs() 1957nreqs ()
1276 PROTOTYPE:
1277 CODE: 1958 CODE:
1278 RETVAL = nreqs; 1959 RETVAL = eio_nreqs ();
1279 OUTPUT: 1960 OUTPUT:
1280 RETVAL 1961 RETVAL
1281 1962
1963int
1964nready ()
1965 CODE:
1966 RETVAL = eio_nready ();
1967 OUTPUT:
1968 RETVAL
1969
1970int
1971npending ()
1972 CODE:
1973 RETVAL = eio_npending ();
1974 OUTPUT:
1975 RETVAL
1976
1977int
1978nthreads ()
1979 CODE:
1980 RETVAL = eio_nthreads ();
1981 OUTPUT:
1982 RETVAL
1983
1984int
1985fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1986 CODE:
1987 RETVAL = posix_fadvise (fh, offset, length, advice);
1988 OUTPUT:
1989 RETVAL
1990
1991IV
1992sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1993 CODE:
1994 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1995 OUTPUT:
1996 RETVAL
1997
1998void
1999mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2000 PPCODE:
2001 sv_clear_foreign (scalar);
2002{
2003 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2004 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2005 if (addr == (void *)-1)
2006 XSRETURN_NO;
2007
2008 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2009
2010 if (!(prot & PROT_WRITE))
2011 SvREADONLY_on (scalar);
2012
2013 XSRETURN_YES;
2014}
2015
2016void
2017munmap (SV *scalar)
2018 CODE:
2019 sv_clear_foreign (scalar);
2020
2021int
2022madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2023 ALIAS:
2024 mprotect = 1
2025 CODE:
2026{
2027 STRLEN svlen;
2028 void *addr = SvPVbyte (scalar, svlen);
2029 STRLEN len = SvUV (length);
2030
2031 if (offset < 0)
2032 offset += svlen;
2033
2034 if (offset < 0 || offset > svlen)
2035 croak ("offset outside of scalar");
2036
2037 if (!SvOK (length) || len + offset > svlen)
2038 len = svlen - offset;
2039
2040 addr = (void *)(((intptr_t)addr) + offset);
2041 eio_page_align (&addr, &len);
2042
2043 switch (ix)
2044 {
2045 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2046 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2047 }
2048}
2049 OUTPUT:
2050 RETVAL
2051
2052int
2053munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2054 CODE:
2055{
2056 STRLEN svlen;
2057 void *addr = SvPVbyte (scalar, svlen);
2058 size_t len = SvUV (length);
2059
2060 if (offset < 0)
2061 offset += svlen;
2062
2063 if (offset < 0 || offset > svlen)
2064 croak ("offset outside of scalar");
2065
2066 if (!SvOK (length) || len + offset > svlen)
2067 len = svlen - offset;
2068
2069 addr = (void *)(((intptr_t)addr) + offset);
2070 eio_page_align (&addr, &len);
2071#if _POSIX_MEMLOCK_RANGE
2072 RETVAL = munlock (addr, len);
2073#else
2074 RETVAL = EIO_ENOSYS ();
2075#endif
2076}
2077 OUTPUT:
2078 RETVAL
2079
2080int
2081munlockall ()
2082 CODE:
2083#if _POSIX_MEMLOCK
2084 munlockall ();
2085#else
2086 RETVAL = EIO_ENOSYS ();
2087#endif
2088 OUTPUT:
2089 RETVAL
2090
2091int
2092splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2093 CODE:
2094{
2095#if HAVE_LINUX_SPLICE
2096 loff_t off_in_, off_out_;
2097 RETVAL = splice (
2098 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2099 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2100 length, flags
2101 );
2102#else
2103 RETVAL = EIO_ENOSYS ();
2104#endif
2105}
2106 OUTPUT:
2107 RETVAL
2108
2109int
2110tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2111 CODE:
2112#if HAVE_LINUX_SPLICE
2113 RETVAL = tee (rfh, wfh, length, flags);
2114#else
2115 RETVAL = EIO_ENOSYS ();
2116#endif
2117 OUTPUT:
2118 RETVAL
2119
2120int
2121pipesize (aio_rfd rfh, int new_size = -1)
2122 PROTOTYPE: $;$
2123 CODE:
2124#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2125 if (new_size >= 0)
2126 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2127 else
2128 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2129#else
2130 errno = ENOSYS;
2131 RETVAL = -1;
2132#endif
2133 OUTPUT:
2134 RETVAL
2135
2136void
2137pipe2 (int flags = 0)
2138 PROTOTYPE: ;$
2139 PPCODE:
2140{
2141 int fd[2];
2142 int res;
2143
2144 if (flags)
2145#if HAVE_PIPE2
2146 res = pipe2 (fd, flags);
2147#else
2148 res = (errno = ENOSYS, -1);
2149#endif
2150 else
2151 res = pipe (fd);
2152
2153 if (!res)
2154 {
2155 EXTEND (SP, 2);
2156 PUSHs (newmortalFH (fd[0], O_RDONLY));
2157 PUSHs (newmortalFH (fd[1], O_WRONLY));
2158 }
2159}
2160
2161UV
2162get_fdlimit ()
2163 CODE:
2164#if HAVE_RLIMITS
2165 struct rlimit rl;
2166 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2167 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2168#endif
2169 XSRETURN_UNDEF;
2170 OUTPUT:
2171 RETVAL
2172
2173void
2174min_fdlimit (UV limit = 0x7fffffffU)
2175 CODE:
2176{
2177#if HAVE_RLIMITS
2178 struct rlimit rl;
2179 rlim_t orig_rlim_max;
2180 UV bit;
2181
2182 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2183 goto fail;
2184
2185 if (rl.rlim_cur == RLIM_INFINITY)
2186 XSRETURN_YES;
2187
2188 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2189
2190 if (rl.rlim_cur < limit)
2191 {
2192 rl.rlim_cur = limit;
2193
2194 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2195 rl.rlim_max = rl.rlim_cur;
2196 }
2197
2198 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2199 XSRETURN_YES;
2200
2201 if (errno == EPERM)
2202 {
2203 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2204 /* our limit overflows a system-wide limit */
2205 /* try an adaptive algorithm, but do not lower the hardlimit */
2206 rl.rlim_max = 0;
2207 for (bit = 0x40000000U; bit; bit >>= 1)
2208 {
2209 rl.rlim_max |= bit;
2210 rl.rlim_cur = rl.rlim_max;
2211
2212 /* nevr decrease the hard limit */
2213 if (rl.rlim_max < orig_rlim_max)
2214 break;
2215
2216 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2217 rl.rlim_max &= ~bit; /* too high, remove bit again */
2218 }
2219
2220 /* now, raise the soft limit to the max permitted */
2221 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2222 {
2223 rl.rlim_cur = rl.rlim_max;
2224 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2225 errno = EPERM;
2226 }
2227 }
2228#endif
2229 fail:
2230 XSRETURN_UNDEF;
2231}
2232
2233void _on_next_submit (SV *cb)
2234 CODE:
2235 SvREFCNT_dec (on_next_submit);
2236 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2237
1282PROTOTYPES: DISABLE 2238PROTOTYPES: DISABLE
1283 2239
2240MODULE = IO::AIO PACKAGE = IO::AIO::WD
2241
2242BOOT:
2243{
2244 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2245 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2246}
2247
2248void
2249DESTROY (SV *self)
2250 CODE:
2251{
2252 aio_wd wd = SvAIO_WD (self);
2253#if HAVE_AT
2254 {
2255 SV *callback = &PL_sv_undef;
2256 dREQ; /* clobbers next_pri :/ */
2257 next_pri = req->pri; /* restore next_pri */
2258 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2259 req->type = EIO_WD_CLOSE;
2260 req->wd = wd;
2261 REQ_SEND;
2262 }
2263#else
2264 eio_wd_close_sync (wd);
2265#endif
2266}
2267
1284MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2268MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285 2269
1286void 2270void
1287cancel (aio_req_ornot req) 2271cancel (aio_req_ornot req)
1288 PROTOTYPE:
1289 CODE: 2272 CODE:
1290 req_cancel (req); 2273 eio_cancel (req);
1291 2274
1292void 2275void
1293cb (aio_req req, SV *callback=&PL_sv_undef) 2276cb (aio_req_ornot req, SV *callback = NO_INIT)
1294 CODE: 2277 PPCODE:
2278{
2279 if (GIMME_V != G_VOID)
2280 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2281
2282 if (items > 1)
2283 {
2284 SV *cb_cv = get_cb (callback);
2285
1295 SvREFCNT_dec (req->callback); 2286 SvREFCNT_dec (req->callback);
1296 req->callback = newSVsv (callback); 2287 req->callback = SvREFCNT_inc (cb_cv);
2288 }
2289}
1297 2290
1298MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2291MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1299 2292
1300void 2293void
1301add (aio_req grp, ...) 2294add (aio_req grp, ...)
1302 PPCODE: 2295 PPCODE:
1303{ 2296{
1304 int i; 2297 int i;
1305 aio_req req;
1306 2298
1307 if (grp->fd == 2) 2299 if (grp->int1 == 2)
1308 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2300 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1309 2301
1310 for (i = 1; i < items; ++i ) 2302 for (i = 1; i < items; ++i )
1311 { 2303 {
2304 aio_req req;
2305
1312 if (GIMME_V != G_VOID) 2306 if (GIMME_V != G_VOID)
1313 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2307 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1314 2308
1315 req = SvAIO_REQ (ST (i)); 2309 req = SvAIO_REQ (ST (i));
1316 2310
1317 if (req) 2311 if (req)
1318 { 2312 eio_grp_add (grp, req);
1319 ++grp->length;
1320 req->grp = grp;
1321
1322 req->grp_prev = 0;
1323 req->grp_next = grp->grp_first;
1324
1325 if (grp->grp_first)
1326 grp->grp_first->grp_prev = req;
1327
1328 grp->grp_first = req;
1329 }
1330 } 2313 }
1331} 2314}
2315
2316void
2317cancel_subs (aio_req_ornot req)
2318 CODE:
2319 req_cancel_subs (req);
1332 2320
1333void 2321void
1334result (aio_req grp, ...) 2322result (aio_req grp, ...)
1335 CODE: 2323 CODE:
1336{ 2324{
1337 int i; 2325 int i;
2326 AV *av;
2327
2328 grp->errorno = errno;
2329
1338 AV *av = newAV (); 2330 av = newAV ();
2331 av_extend (av, items - 1);
1339 2332
1340 for (i = 1; i < items; ++i ) 2333 for (i = 1; i < items; ++i )
1341 av_push (av, newSVsv (ST (i))); 2334 av_push (av, newSVsv (ST (i)));
1342 2335
1343 SvREFCNT_dec (grp->data); 2336 SvREFCNT_dec (grp->sv1);
1344 grp->data = (SV *)av; 2337 grp->sv1 = (SV *)av;
1345} 2338}
1346 2339
1347void 2340void
2341errno (aio_req grp, int errorno = errno)
2342 CODE:
2343 grp->errorno = errorno;
2344
2345void
1348feed_limit (aio_req grp, int limit) 2346limit (aio_req grp, int limit)
1349 CODE: 2347 CODE:
1350 grp->fd2 = limit; 2348 eio_grp_limit (grp, limit);
1351 aio_grp_feed (grp);
1352 2349
1353void 2350void
1354feed (aio_req grp, SV *callback=&PL_sv_undef) 2351feed (aio_req grp, SV *callback = &PL_sv_undef)
1355 CODE: 2352 CODE:
1356{ 2353{
1357 SvREFCNT_dec (grp->fh2); 2354 SvREFCNT_dec (grp->sv2);
1358 grp->fh2 = newSVsv (callback); 2355 grp->sv2 = newSVsv (callback);
2356 grp->feed = aio_grp_feed;
1359 2357
1360 if (grp->fd2 <= 0) 2358 if (grp->int2 <= 0)
1361 grp->fd2 = 2; 2359 grp->int2 = 2;
1362 2360
1363 aio_grp_feed (grp); 2361 eio_grp_limit (grp, grp->int2);
1364} 2362}
1365 2363

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