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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.61 by root, Mon Oct 23 22:44:21 2006 UTC vs.
Revision 1.271 by root, Fri Dec 28 12:43:00 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"
8#include "perliol.h"
7 9
8#include "autoconf/config.h" 10#if !defined mg_findext
9 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
10#include <pthread.h> 12#endif
11 13
12#include <stddef.h> 14#include <stddef.h>
15#include <stdlib.h>
13#include <errno.h> 16#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
17#include <sys/stat.h> 19#include <sys/stat.h>
18#include <limits.h> 20#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 21#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 22#include <sched.h>
23 23
24#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
25# if __linux 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 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
26# include <sys/sendfile.h> 88 #include <sys/select.h>
27# elif __freebsd 89 #include <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
28# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
29# include <sys/uio.h> 119# include <sys/mman.h>
30# elif __hpux 120#endif
31# include <sys/socket.h> 121
32# elif __solaris /* not yet */ 122#if HAVE_ST_XTIMENSEC
123# define ATIMENSEC PL_statcache.st_atimensec
124# define MTIMENSEC PL_statcache.st_mtimensec
125# define CTIMENSEC PL_statcache.st_ctimensec
126#elif HAVE_ST_XTIMESPEC
127# define ATIMENSEC PL_statcache.st_atim.tv_nsec
128# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
129# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
130#else
131# define ATIMENSEC 0
132# define MTIMENSEC 0
133# define CTIMENSEC 0
134#endif
135
136#if HAVE_ST_BIRTHTIMENSEC
137# define BTIMESEC PL_statcache.st_birthtime
138# define BTIMENSEC PL_statcache.st_birthtimensec
139#elif HAVE_ST_BIRTHTIMESPEC
140# define BTIMESEC PL_statcache.st_birthtim.tv_sec
141# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
142#else
143# define BTIMESEC 0
144# define BTIMENSEC 0
145#endif
146
147#if HAVE_ST_GEN
148# define ST_GEN PL_statcache.st_gen
149#else
150# define ST_GEN 0
151#endif
152
153#include "schmorp.h"
154
155#if HAVE_EVENTFD
33# include <sys/sendfile.h> 156# include <sys/eventfd.h>
157#endif
158
159#if HAVE_TIMERFD
160# include <sys/timerfd.h>
161#endif
162
163#if HAVE_RLIMITS
164 #include <sys/time.h>
165 #include <sys/resource.h>
166#endif
167
168typedef SV SV8; /* byte-sv, used for argument-checking */
169typedef int aio_rfd; /* read file desriptor */
170typedef int aio_wfd; /* write file descriptor */
171
172static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
173
174#define EIO_REQ_MEMBERS \
175 SV *callback; \
176 SV *sv1, *sv2; \
177 SV *sv3, *sv4; \
178 STRLEN stroffset; \
179 SV *self;
180
181#define EIO_NO_WRAPPERS 1
182
183#include "libeio/eio.h"
184
185static int req_invoke (eio_req *req);
186#define EIO_FINISH(req) req_invoke (req)
187static void req_destroy (eio_req *grp);
188#define EIO_DESTROY(req) req_destroy (req)
189
190#include "libeio/eio.c"
191
192#if !HAVE_POSIX_FADVISE
193# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
194#endif
195
196#if !HAVE_POSIX_MADVISE
197# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#ifndef MAP_ANONYMOUS
201# ifdef MAP_ANON
202# define MAP_ANONYMOUS MAP_ANON
34# else 203# else
35# error sendfile support requested but not available 204# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 205# endif
37#endif 206#endif
38 207
39/* used for struct dirent, AIX doesn't provide it */ 208#ifndef makedev
40#ifndef NAME_MAX 209# define makedev(maj,min) (((maj) << 8) | (min))
41# define NAME_MAX 4096
42#endif 210#endif
211#ifndef major
212# define major(dev) ((dev) >> 8)
213#endif
214#ifndef minor
215# define minor(dev) ((dev) & 0xff)
216#endif
43 217
44#if __ia64 218/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
45# define STACKSIZE 65536 219#ifdef __sun
220# undef PAGESIZE
221#endif
222
223#if PAGESIZE <= 0
224# define PAGESIZE sysconf (_SC_PAGESIZE)
225#endif
226
227/*****************************************************************************/
228
229#if !_POSIX_MAPPED_FILES
230# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
231# define munmap(addr,length) EIO_ENOSYS ()
232#endif
233
234#if !_POSIX_MEMORY_PROTECTION
235# define mprotect(addr,len,prot) EIO_ENOSYS ()
236#endif
237
238#if !MREMAP_MAYMOVE
239# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
240#endif
241
242#define FOREIGN_MAGIC PERL_MAGIC_ext
243
244static int ecb_cold
245mmap_free (pTHX_ SV *sv, MAGIC *mg)
246{
247 int old_errno = errno;
248 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
249 errno = old_errno;
250
251 mg->mg_obj = 0; /* just in case */
252
253 SvREADONLY_off (sv);
254
255 if (SvPVX (sv) != mg->mg_ptr)
256 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
257
258 SvCUR_set (sv, 0);
259 SvPVX (sv) = 0;
260 SvOK_off (sv);
261
262 return 0;
263}
264
265static MGVTBL mmap_vtbl = {
266 0, 0, 0, 0, mmap_free
267};
268
269static int ecb_cold
270sysfree_free (pTHX_ SV *sv, MAGIC *mg)
271{
272 free (mg->mg_ptr);
273 mg->mg_obj = 0; /* just in case */
274
275 SvREADONLY_off (sv);
276
277 if (SvPVX (sv) != mg->mg_ptr)
278 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
279
280 SvCUR_set (sv, 0);
281 SvPVX (sv) = 0;
282 SvOK_off (sv);
283
284 return 0;
285}
286
287static MGVTBL sysfree_vtbl = {
288 0, 0, 0, 0, sysfree_free
289};
290
291/*****************************************************************************/
292
293/* helper: set scalar to foreign ptr with custom free */
294static void
295sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
296{
297 sv_force_normal (sv);
298
299 /* we store the length in mg_obj, as namlen is I32 :/ */
300 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
301 ->mg_obj = (SV *)length;
302
303 SvUPGRADE (sv, SVt_PV); /* nop... */
304
305 if (SvLEN (sv))
306 Safefree (SvPVX (sv));
307
308 SvPVX (sv) = (char *)addr;
309 SvCUR_set (sv, length);
310 SvLEN_set (sv, 0);
311 SvPOK_only (sv);
312}
313
314static void
315sv_clear_foreign (SV *sv)
316{
317 /* todo: iterate over magic and only free ours, but of course */
318 /* the perl5porters will call that (correct) behaviour buggy */
319 sv_unmagic (sv, FOREIGN_MAGIC);
320}
321
322/*****************************************************************************/
323
324/* defines all sorts of constants to 0 unless they are already defined */
325/* also provides const_iv_ and const_niv_ macros for them */
326#include "def0.h"
327
328/*****************************************************************************/
329
330static void
331fiemap (eio_req *req)
332{
333 req->result = -1;
334
335#if HAVE_FIEMAP
336 /* assume some c99 */
337 struct fiemap *fiemap = 0;
338 size_t end_offset;
339 int count = req->int3;
340
341 req->flags |= EIO_FLAG_PTR1_FREE;
342
343 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
344 /* increase in 3.5kb steps */
345 if (count < 0)
346 count = 8;
347
348 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
349 errno = ENOMEM;
350 if (!fiemap)
351 return;
352
353 req->ptr1 = fiemap;
354
355 fiemap->fm_start = req->offs;
356 fiemap->fm_length = req->size;
357 fiemap->fm_flags = req->int2;
358 fiemap->fm_extent_count = count;
359
360 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
361 return;
362
363 if (req->int3 >= 0 /* not autosizing */
364 || !fiemap->fm_mapped_extents /* no more extents */
365 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
366 goto done;
367
368 /* else we have to loop -
369 * it would be tempting (actually I tried that first) to just query the
370 * number of extents needed, but linux often feels like not returning all
371 * extents, without telling us it left any out. this complicates
372 * this quite a bit.
373 */
374
375 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
376
377 for (;;)
378 {
379 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
380 char scratch[3072];
381 struct fiemap *incmap = (struct fiemap *)scratch;
382
383 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
384 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
385 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
386 incmap->fm_flags = fiemap->fm_flags;
387 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
388
389 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
390 return;
391
392 if (!incmap->fm_mapped_extents)
393 goto done;
394
395 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
396 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
397 errno = ENOMEM;
398 if (!fiemap)
399 return;
400
401 req->ptr1 = fiemap;
402
403 for (count = 0; count < incmap->fm_mapped_extents; ++count)
404 {
405 struct fiemap_extent *e = incmap->fm_extents + count;
406
407 if (e->fe_logical + e->fe_length >= end_offset)
408 goto done;
409
410 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
411
412 if (e->fe_flags & FIEMAP_EXTENT_LAST)
413 goto done;
414
415 }
416 }
417
418done:
419 req->result = 0;
420
46#else 421#else
47# define STACKSIZE 8192 422 errno = ENOSYS;
48#endif 423#endif
424}
425
426/*****************************************************************************/
427
428static int close_fd; /* dummy fd to close fds via dup2 */
49 429
50enum { 430enum {
51 REQ_QUIT, 431 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}; 432};
63 433
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 SV *data, *callback;
72 SV *fh, *fh2;
73 void *dataptr, *data2ptr;
74 Stat_t *statdata;
75 off_t offset;
76 size_t length;
77 ssize_t result;
78
79 STRLEN dataoffset;
80 int type;
81 int fd, fd2;
82 int errorno;
83 mode_t mode; /* open */
84
85 unsigned char flags;
86 unsigned char pri;
87
88 SV *self; /* the perl counterpart of this request, if any */
89 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90} aio_cb;
91
92enum {
93 FLAG_CANCELLED = 0x01,
94};
95
96typedef aio_cb *aio_req; 434typedef eio_req *aio_req;
97typedef aio_cb *aio_req_ornot; 435typedef eio_req *aio_req_ornot;
436typedef eio_wd aio_wd;
98 437
99enum { 438static SV *on_next_submit;
100 PRI_MIN = -4, 439static int next_pri = EIO_PRI_DEFAULT;
101 PRI_MAX = 4,
102
103 DEFAULT_PRI = 0,
104 PRI_BIAS = -PRI_MIN,
105};
106
107static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109static int started, wanted;
110static volatile int nreqs;
111static int max_outstanding = 1<<30; 440static int max_outstanding;
112static int respipe [2];
113 441
114static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 442static s_epipe respipe;
115static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117 443
118static volatile aio_req reqs, reqe; /* queue start, queue end */ 444static void req_destroy (aio_req req);
119static volatile aio_req ress, rese; /* queue start, queue end */
120
121static void req_invoke (aio_req req); 445static void req_cancel (aio_req req);
122static void req_free (aio_req req); 446
447static void
448want_poll (void)
449{
450 /* write a dummy byte to the pipe so fh becomes ready */
451 s_epipe_signal (&respipe);
452}
453
454static void
455done_poll (void)
456{
457 /* read any signals sent by the worker threads */
458 s_epipe_drain (&respipe);
459}
123 460
124/* must be called at most once */ 461/* must be called at most once */
125static SV *req_sv (aio_req req, const char *klass) 462static SV *
463req_sv (aio_req req, HV *stash)
126{ 464{
127 if (!req->self) 465 if (!req->self)
128 { 466 {
129 req->self = (SV *)newHV (); 467 req->self = (SV *)newHV ();
130 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 468 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
131 } 469 }
132 470
133 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 471 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
134} 472}
135 473
136static aio_req SvAIO_REQ (SV *sv) 474static SV *
475newSVaio_wd (aio_wd wd)
476{
477 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
478}
479
480static aio_req
481SvAIO_REQ (SV *sv)
137{ 482{
138 MAGIC *mg; 483 MAGIC *mg;
139 484
140 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 485 if (!SvROK (sv)
486 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
487 || (SvSTASH (SvRV (sv)) != aio_grp_stash
488 && SvSTASH (SvRV (sv)) != aio_req_stash
489 && !sv_derived_from (sv, "IO::AIO::REQ")))
141 croak ("object of class " AIO_REQ_KLASS " expected"); 490 croak ("object of class IO::AIO::REQ expected");
142 491
143 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 492 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
144 493
145 return mg ? (aio_req)mg->mg_ptr : 0; 494 return mg ? (aio_req)mg->mg_ptr : 0;
146} 495}
147 496
497static aio_wd
498SvAIO_WD (SV *sv)
499{
500 if (!SvROK (sv)
501 || SvTYPE (SvRV (sv)) != SVt_PVMG
502 || SvSTASH (SvRV (sv)) != aio_wd_stash)
503 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
504
505 return (aio_wd)(long)SvIVX (SvRV (sv));
506}
507
508static SV *
509newmortalFH (int fd, int flags)
510{
511 if (fd < 0)
512 return &PL_sv_undef;
513
514 GV *gv = (GV *)sv_newmortal ();
515 char sym[64];
516 int symlen;
517
518 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
519 gv_init (gv, aio_stash, sym, symlen, 0);
520
521 symlen = snprintf (
522 sym,
523 sizeof (sym),
524 "%s&=%d",
525 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
526 fd
527 );
528
529 return do_open (gv, sym, symlen, 0, 0, 0, 0)
530 ? (SV *)gv : &PL_sv_undef;
531}
532
533static void
148static void aio_grp_feed (aio_req grp) 534aio_grp_feed (aio_req grp)
149{ 535{
150 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 536 if (grp->sv2 && SvOK (grp->sv2))
151 { 537 {
152 int old_len = grp->length; 538 dSP;
153 539
154 if (grp->fh2 && SvOK (grp->fh2)) 540 ENTER;
541 SAVETMPS;
542 PUSHMARK (SP);
543 XPUSHs (req_sv (grp, aio_grp_stash));
544 PUTBACK;
545 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
546 SPAGAIN;
547 FREETMPS;
548 LEAVE;
549 }
550}
551
552static void
553req_submit (eio_req *req)
554{
555 eio_submit (req);
556
557 if (expect_false (on_next_submit))
558 {
559 dSP;
560 SV *cb = sv_2mortal (on_next_submit);
561
562 on_next_submit = 0;
563
564 PUSHMARK (SP);
565 PUTBACK;
566 call_sv (cb, G_DISCARD | G_EVAL);
567 }
568}
569
570static int
571req_invoke (eio_req *req)
572{
573 if (req->flags & FLAG_SV2_RO_OFF)
574 SvREADONLY_off (req->sv2);
575
576 if (!EIO_CANCELLED (req) && req->callback)
577 {
578 dSP;
579 static SV *sv_result_cache; /* caches the result integer SV */
580 SV *sv_result;
581
582 ENTER;
583 SAVETMPS;
584 PUSHMARK (SP);
585 EXTEND (SP, 1);
586
587 /* do not recreate the result IV from scratch each time */
588 if (expect_true (sv_result_cache))
155 { 589 {
156 dSP; 590 sv_result = sv_result_cache; sv_result_cache = 0;
157 591 SvIV_set (sv_result, req->result);
158 ENTER; 592 SvIOK_only (sv_result);
159 SAVETMPS;
160 PUSHMARK (SP);
161 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162 PUTBACK;
163 call_sv (grp->fh2, G_VOID | G_EVAL);
164 SPAGAIN;
165 FREETMPS;
166 LEAVE;
167 } 593 }
168 594 else
169 /* stop if no progress has been made */
170 if (old_len == grp->length)
171 { 595 {
172 SvREFCNT_dec (grp->fh2); 596 sv_result = newSViv (req->result);
173 grp->fh2 = 0; 597 SvREADONLY_on (sv_result);
174 break;
175 } 598 }
599
600 switch (req->type)
601 {
602 case EIO_WD_OPEN:
603 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
604 break;
605
606 case EIO_READDIR:
607 {
608 SV *rv = &PL_sv_undef;
609
610 if (req->result >= 0)
611 {
612 int i;
613 char *names = (char *)req->ptr2;
614 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
615 AV *av = newAV ();
616
617 av_extend (av, req->result - 1);
618
619 for (i = 0; i < req->result; ++i)
620 {
621 if (req->int1 & EIO_READDIR_DENTS)
622 {
623 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
624
625 if (req->int1 & EIO_READDIR_CUSTOM2)
626 {
627 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
628 AV *avent = newAV ();
629
630 av_extend (avent, 2);
631
632 if (!sv_type [ent->type])
633 {
634 sv_type [ent->type] = newSViv (ent->type);
635 SvREADONLY_on (sv_type [ent->type]);
636 }
637
638 av_store (avent, 0, namesv);
639 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
640 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
641
642 av_store (av, i, newRV_noinc ((SV *)avent));
643 }
644 else
645 av_store (av, i, namesv);
646
647 ++ent;
648 }
649 else
650 {
651 SV *name = newSVpv (names, 0);
652 av_store (av, i, name);
653 names += SvCUR (name) + 1;
654 }
655 }
656
657 rv = sv_2mortal (newRV_noinc ((SV *)av));
658 }
659
660 PUSHs (rv);
661
662 if (req->int1 & EIO_READDIR_CUSTOM1)
663 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
664 }
665 break;
666
667 case EIO_OPEN:
668 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
669 break;
670
671 case EIO_STATVFS:
672 case EIO_FSTATVFS:
673 {
674 SV *rv = &PL_sv_undef;
675
676#ifndef _WIN32
677 if (req->result >= 0)
678 {
679 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
680 HV *hv = newHV ();
681 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
682 * chooses to make it a struct.
683 */
684 unsigned long fsid = 0;
685 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
686
687 rv = sv_2mortal (newRV_noinc ((SV *)hv));
688
689 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
690 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
691 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
692 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
693 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
694 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
695 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
696 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
697 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
698 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
699 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
700 }
701#endif
702
703 PUSHs (rv);
704 }
705
706 break;
707
708 case EIO_GROUP:
709 req->int1 = 2; /* mark group as finished */
710
711 if (req->sv1)
712 {
713 int i;
714 AV *av = (AV *)req->sv1;
715
716 EXTEND (SP, AvFILL (av) + 1);
717 for (i = 0; i <= AvFILL (av); ++i)
718 PUSHs (*av_fetch (av, i, 0));
719 }
720 break;
721
722 case EIO_NOP:
723 case EIO_BUSY:
724 break;
725
726 case EIO_READLINK:
727 case EIO_REALPATH:
728 if (req->result > 0)
729 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
730 break;
731
732 case EIO_STAT:
733 case EIO_LSTAT:
734 case EIO_FSTAT:
735 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
736
737 if (!(PL_laststatval = req->result))
738 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
739 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
740
741 PUSHs (sv_result);
742 break;
743
744 case EIO_SEEK:
745 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
746 break;
747
748 case EIO_READ:
749 {
750 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
751 *SvEND (req->sv2) = 0;
752 SvPOK_only (req->sv2);
753 SvSETMAGIC (req->sv2);
754 PUSHs (sv_result);
755 }
756 break;
757
758 case EIO_SLURP:
759 {
760 if (req->result >= 0)
761 {
762 /* if length was originally not known, we steal the malloc'ed memory */
763 if (req->flags & EIO_FLAG_PTR2_FREE)
764 {
765 req->flags &= ~EIO_FLAG_PTR2_FREE;
766 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
767 }
768 else
769 {
770 SvCUR_set (req->sv2, req->result);
771 *SvEND (req->sv2) = 0;
772 SvPOK_only (req->sv2);
773 }
774
775 SvSETMAGIC (req->sv2);
776 }
777
778 PUSHs (sv_result);
779 }
780 break;
781
782 case EIO_CUSTOM:
783 if (req->feed == fiemap)
784 {
785#if HAVE_FIEMAP
786 if (!req->result)
787 {
788 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
789
790 if (fiemap->fm_extent_count)
791 {
792 AV *av = newAV ();
793 int i;
794
795 while (fiemap->fm_mapped_extents)
796 {
797 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
798 AV *ext_av = newAV ();
799
800 av_store (ext_av, 3, newSVuv (extent->fe_flags));
801 av_store (ext_av, 2, newSVval64 (extent->fe_length));
802 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
803 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
804
805 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
806 }
807
808 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809 }
810 else
811 {
812 SvIV_set (sv_result, fiemap->fm_mapped_extents);
813 PUSHs (sv_result);
814 }
815 }
816#endif
817 }
818 else
819 PUSHs (sv_result);
820 break;
821
822 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
823 if (req->result > 0)
824 SvIV_set (sv_result, 0);
825 /* FALLTHROUGH */
826
827 default:
828 PUSHs (sv_result);
829 break;
830 }
831
832 errno = req->errorno;
833
834 PUTBACK;
835 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
836 SPAGAIN;
837
838 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
839 SvREFCNT_dec (sv_result);
840 else
841 sv_result_cache = sv_result;
842
843 FREETMPS;
844 LEAVE;
845
846 PUTBACK;
176 } 847 }
177}
178 848
179static void aio_grp_dec (aio_req grp) 849 return !!SvTRUE (ERRSV);
180{
181 --grp->length;
182
183 /* call feeder, if applicable */
184 aio_grp_feed (grp);
185
186 /* finish, if done */
187 if (!grp->length && grp->fd)
188 {
189 req_invoke (grp);
190 req_free (grp);
191 }
192} 850}
193 851
194static void poll_wait () 852static void
853req_destroy (aio_req req)
195{ 854{
196 while (nreqs)
197 {
198 aio_req req;
199 pthread_mutex_lock (&reslock);
200 req = ress;
201 pthread_mutex_unlock (&reslock);
202
203 if (req)
204 return;
205
206 fd_set rfd;
207 FD_ZERO(&rfd);
208 FD_SET(respipe [0], &rfd);
209
210 select (respipe [0] + 1, &rfd, 0, 0, 0);
211 }
212}
213
214static void req_invoke (aio_req req)
215{
216 dSP;
217 int errorno = errno;
218
219 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220 return;
221
222 errno = req->errorno;
223
224 ENTER;
225 SAVETMPS;
226 PUSHMARK (SP);
227 EXTEND (SP, 1);
228
229 switch (req->type)
230 {
231 case REQ_READDIR:
232 {
233 SV *rv = &PL_sv_undef;
234
235 if (req->result >= 0)
236 {
237 char *buf = req->data2ptr;
238 AV *av = newAV ();
239
240 while (req->result)
241 {
242 SV *sv = newSVpv (buf, 0);
243
244 av_push (av, sv);
245 buf += SvCUR (sv) + 1;
246 req->result--;
247 }
248
249 rv = sv_2mortal (newRV_noinc ((SV *)av));
250 }
251
252 PUSHs (rv);
253 }
254 break;
255
256 case REQ_OPEN:
257 {
258 /* convert fd to fh */
259 SV *fh;
260
261 PUSHs (sv_2mortal (newSViv (req->result)));
262 PUTBACK;
263 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264 SPAGAIN;
265
266 fh = SvREFCNT_inc (POPs);
267
268 PUSHMARK (SP);
269 XPUSHs (sv_2mortal (fh));
270 }
271 break;
272
273 case REQ_GROUP:
274 req->fd = 2; /* mark group as finished */
275
276 if (req->data)
277 {
278 int i;
279 AV *av = (AV *)req->data;
280
281 EXTEND (SP, AvFILL (av) + 1);
282 for (i = 0; i <= AvFILL (av); ++i)
283 PUSHs (*av_fetch (av, i, 0));
284 }
285 break;
286
287 case REQ_NOP:
288 case REQ_SLEEP:
289 break;
290
291 default:
292 PUSHs (sv_2mortal (newSViv (req->result)));
293 break;
294 }
295
296
297 PUTBACK;
298 call_sv (req->callback, G_VOID | G_EVAL);
299 SPAGAIN;
300
301 FREETMPS;
302 LEAVE;
303
304 errno = errorno;
305
306 if (SvTRUE (ERRSV))
307 {
308 req_free (req);
309 croak (0);
310 }
311}
312
313static void req_free (aio_req req)
314{
315 if (req->grp)
316 {
317 aio_req grp = req->grp;
318
319 /* unlink request */
320 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
321 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
322
323 if (grp->grp_first == req)
324 grp->grp_first = req->grp_next;
325
326 aio_grp_dec (grp);
327 }
328
329 if (req->self) 855 if (req->self)
330 { 856 {
331 sv_unmagic (req->self, PERL_MAGIC_ext); 857 sv_unmagic (req->self, PERL_MAGIC_ext);
332 SvREFCNT_dec (req->self); 858 SvREFCNT_dec (req->self);
333 } 859 }
334 860
335 SvREFCNT_dec (req->data);
336 SvREFCNT_dec (req->fh); 861 SvREFCNT_dec (req->sv1);
337 SvREFCNT_dec (req->fh2); 862 SvREFCNT_dec (req->sv2);
863 SvREFCNT_dec (req->sv3);
864 SvREFCNT_dec (req->sv4);
338 SvREFCNT_dec (req->callback); 865 SvREFCNT_dec (req->callback);
339 Safefree (req->statdata);
340 866
341 if (req->type == REQ_READDIR && req->result >= 0)
342 free (req->data2ptr);
343
344 Safefree (req); 867 free (req);
345} 868}
346 869
347static void req_cancel (aio_req req) 870static void
871req_cancel_subs (aio_req grp)
348{ 872{
349 req->flags |= FLAG_CANCELLED;
350
351 if (req->type == REQ_GROUP) 873 if (grp->type != EIO_GROUP)
874 return;
875
876 SvREFCNT_dec (grp->sv2);
877 grp->sv2 = 0;
878
879 eio_grp_cancel (grp);
880}
881
882static void ecb_cold
883create_respipe (void)
884{
885 if (s_epipe_renew (&respipe))
886 croak ("IO::AIO: unable to initialize result pipe");
887}
888
889static void
890poll_wait (void)
891{
892 while (eio_nreqs ())
352 { 893 {
353 aio_req sub; 894 int size;
354 895
355 for (sub = req->grp_first; sub; sub = sub->grp_next) 896 X_LOCK (EIO_POOL->reslock);
356 req_cancel (sub); 897 size = EIO_POOL->res_queue.size;
898 X_UNLOCK (EIO_POOL->reslock);
899
900 if (size)
901 return;
902
903 etp_maybe_start_thread (EIO_POOL);
904
905 s_epipe_wait (&respipe);
357 } 906 }
358} 907}
359 908
360static int poll_cb () 909static int
910poll_cb (void)
361{ 911{
362 dSP;
363 int count = 0;
364 int do_croak = 0;
365 aio_req req;
366
367 for (;;) 912 for (;;)
368 { 913 {
369 pthread_mutex_lock (&reslock); 914 int res = eio_poll ();
370 req = ress;
371 915
372 if (req) 916 if (res > 0)
917 croak (0);
918
919 if (!max_outstanding || max_outstanding > eio_nreqs ())
920 return res;
921
922 poll_wait ();
923 }
924}
925
926static void ecb_cold
927reinit (void)
928{
929 create_respipe ();
930
931 if (eio_init (want_poll, done_poll) < 0)
932 croak ("IO::AIO: unable to initialise eio library");
933}
934
935/*****************************************************************************/
936
937static SV *
938get_cb (SV *cb_sv)
939{
940 SvGETMAGIC (cb_sv);
941 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
942}
943
944static aio_req ecb_noinline
945dreq (SV *callback)
946{
947 SV *cb_cv;
948 aio_req req;
949 int req_pri = next_pri;
950 next_pri = EIO_PRI_DEFAULT;
951
952 cb_cv = get_cb (callback);
953
954 req = calloc (sizeof (*req), 1);
955 if (!req)
956 croak ("out of memory during eio_req allocation");
957
958 req->callback = SvREFCNT_inc (cb_cv);
959 req->pri = req_pri;
960
961 return req;
962}
963
964#define dREQ \
965 aio_req req = dreq (callback); \
966
967#define REQ_SEND \
968 PUTBACK; \
969 req_submit (req); \
970 SPAGAIN; \
971 \
972 if (GIMME_V != G_VOID) \
973 XPUSHs (req_sv (req, aio_req_stash));
974
975ecb_inline void
976req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
977{
978 if (expect_false (SvROK (path)))
979 {
980 SV *rv = SvRV (path);
981 SV *wdob;
982
983 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
373 { 984 {
374 ress = req->next; 985 path = AvARRAY (rv)[1];
986 wdob = AvARRAY (rv)[0];
375 987
376 if (!ress) 988 if (SvOK (wdob))
377 { 989 {
378 /* read any signals sent by the worker threads */ 990 *wd = SvAIO_WD (wdob);
379 char buf [32]; 991 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
380 while (read (respipe [0], buf, 32) == 32)
381 ;
382
383 rese = 0;
384 } 992 }
993 else
994 *wd = EIO_INVALID_WD;
385 } 995 }
386 996 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
387 pthread_mutex_unlock (&reslock);
388
389 if (!req)
390 break;
391
392 --nreqs;
393
394 if (req->type == REQ_QUIT)
395 started--;
396 else if (req->type == REQ_GROUP && req->length)
397 { 997 {
398 req->fd = 1; /* mark request as delayed */ 998 *wd = (aio_wd)(long)SvIVX (rv);
399 continue; 999 *wdsv = SvREFCNT_inc_NN (rv);
1000 *ptr = ".";
1001 return; /* path set to "." */
400 } 1002 }
401 else 1003 else
402 { 1004 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
403 if (req->type == REQ_READ)
404 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407 SvREADONLY_off (req->data);
408
409 if (req->statdata)
410 {
411 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412 PL_laststatval = req->result;
413 PL_statcache = *(req->statdata);
414 }
415
416 req_invoke (req);
417
418 count++;
419 }
420
421 req_free (req);
422 } 1005 }
423 1006
424 return count; 1007 *pathsv = newSVsv (path);
1008 *ptr = SvPVbyte_nolen (*pathsv);
425} 1009}
426 1010
427static void *aio_proc(void *arg); 1011static void ecb_noinline
428 1012req_set_path1 (aio_req req, SV *path)
429static void start_thread (void)
430{ 1013{
431 sigset_t fullsigset, oldsigset; 1014 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
432 pthread_t tid;
433 pthread_attr_t attr;
434
435 pthread_attr_init (&attr);
436 pthread_attr_setstacksize (&attr, STACKSIZE);
437 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
438
439 sigfillset (&fullsigset);
440 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
441
442 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
443 started++;
444
445 sigprocmask (SIG_SETMASK, &oldsigset, 0);
446} 1015}
447 1016
448static void req_send (aio_req req) 1017static void ecb_noinline
1018req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
449{ 1019{
450 while (started < wanted && nreqs >= started) 1020 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
451 start_thread ();
452 1021
453 ++nreqs; 1022 switch (SvTYPE (rv))
454
455 pthread_mutex_lock (&reqlock);
456
457 req->next = 0;
458
459 if (reqe)
460 { 1023 {
461 reqe->next = req; 1024 case SVt_PVIO:
462 reqe = req; 1025 case SVt_PVLV:
1026 case SVt_PVGV:
1027 req->type = type_fh;
1028 req->sv1 = newSVsv (fh_or_path);
1029 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1030 break;
1031
1032 default:
1033 req->type = type_path;
1034 req_set_path1 (req, fh_or_path);
1035 break;
463 } 1036 }
464 else
465 reqe = reqs = req;
466
467 pthread_cond_signal (&reqwait);
468 pthread_mutex_unlock (&reqlock);
469
470 if (nreqs > max_outstanding)
471 for (;;)
472 {
473 poll_cb ();
474
475 if (nreqs <= max_outstanding)
476 break;
477
478 poll_wait ();
479 }
480}
481
482static void end_thread (void)
483{
484 aio_req req;
485 Newz (0, req, 1, aio_cb);
486 req->type = REQ_QUIT;
487
488 req_send (req);
489}
490
491static void min_parallel (int nthreads)
492{
493 if (wanted < nthreads)
494 wanted = nthreads;
495}
496
497static void max_parallel (int nthreads)
498{
499 int cur = started;
500
501 if (wanted > nthreads)
502 wanted = nthreads;
503
504 while (cur > wanted)
505 {
506 end_thread ();
507 cur--;
508 }
509
510 while (started > wanted)
511 {
512 poll_wait ();
513 poll_cb ();
514 }
515}
516
517static void create_pipe ()
518{
519 if (pipe (respipe))
520 croak ("unable to initialize result pipe");
521
522 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
523 croak ("cannot set result pipe to nonblocking mode");
524
525 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
526 croak ("cannot set result pipe to nonblocking mode");
527} 1037}
528 1038
529/*****************************************************************************/ 1039/*****************************************************************************/
530/* work around various missing functions */
531 1040
532#if !HAVE_PREADWRITE 1041static void
533# define pread aio_pread 1042ts_set (struct timespec *ts, NV value)
534# define pwrite aio_pwrite
535
536/*
537 * make our pread/pwrite safe against themselves, but not against
538 * normal read/write by using a mutex. slows down execution a lot,
539 * but that's your problem, not mine.
540 */
541static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
542
543static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
544{ 1043{
545 ssize_t res; 1044 ts->tv_sec = value;
546 off_t ooffset; 1045 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
547
548 pthread_mutex_lock (&preadwritelock);
549 ooffset = lseek (fd, 0, SEEK_CUR);
550 lseek (fd, offset, SEEK_SET);
551 res = read (fd, buf, count);
552 lseek (fd, ooffset, SEEK_SET);
553 pthread_mutex_unlock (&preadwritelock);
554
555 return res;
556} 1046}
557 1047
558static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1048static NV
1049ts_get (const struct timespec *ts)
559{ 1050{
560 ssize_t res; 1051 return ts->tv_sec + ts->tv_nsec * 1e-9;
561 off_t ooffset;
562
563 pthread_mutex_lock (&preadwritelock);
564 ooffset = lseek (fd, 0, SEEK_CUR);
565 lseek (fd, offset, SEEK_SET);
566 res = write (fd, buf, count);
567 lseek (fd, offset, SEEK_SET);
568 pthread_mutex_unlock (&preadwritelock);
569
570 return res;
571} 1052}
572#endif
573 1053
574#if !HAVE_FDATASYNC 1054/*****************************************************************************/
575# define fdatasync fsync
576#endif
577 1055
578#if !HAVE_READAHEAD 1056XS(boot_IO__AIO) ecb_cold;
579# define readahead aio_readahead
580 1057
581static ssize_t readahead (int fd, off_t offset, size_t count) 1058MODULE = IO::AIO PACKAGE = IO::AIO
582{
583 char readahead_buf[4096];
584 1059
585 while (count > 0) 1060PROTOTYPES: ENABLE
586 {
587 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
588 1061
589 pread (fd, readahead_buf, len, offset); 1062BOOT:
590 offset += len;
591 count -= len;
592 }
593
594 errno = 0;
595}
596#endif
597
598#if !HAVE_READDIR_R
599# define readdir_r aio_readdir_r
600
601static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
602
603static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
604{ 1063{
605 struct dirent *e; 1064 static const struct {
606 int errorno; 1065 const char *name;
1066 IV iv;
1067 } *civ, const_iv[] = {
1068# define const_niv(name, value) { # name, (IV) value },
1069# define const_iv(name) { # name, (IV) name },
1070# define const_eio(name) { # name, (IV) EIO_ ## name },
607 1071
608 pthread_mutex_lock (&readdirlock); 1072 /* you have to re-run ./gendef0 after adding/removing any constants here */
1073 /* the first block can be undef if missing */
1074 const_iv (ENOSYS)
1075 const_iv (EXDEV)
1076 const_iv (EBADR)
609 1077
610 e = readdir (dirp); 1078 /* for lseek */
611 errorno = errno; 1079 const_iv (SEEK_DATA)
1080 const_iv (SEEK_HOLE)
612 1081
613 if (e) 1082 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
614 { 1083 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
615 *res = ent; 1084 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
616 strcpy (ent->d_name, e->d_name); 1085 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
617 } 1086 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
618 else 1087 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
619 *res = 0;
620 1088
621 pthread_mutex_unlock (&readdirlock); 1089 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1090 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1091 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1092 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1093 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
622 1094
623 errno = errorno; 1095 /* the second block will be 0 when missing */
624 return e ? 0 : -1; 1096 const_iv (O_ACCMODE)
625}
626#endif
627 1097
628/* sendfile always needs emulation */ 1098 const_iv (O_RDONLY)
629static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1099 const_iv (O_WRONLY)
630{ 1100 const_iv (O_RDWR)
631 ssize_t res; 1101 const_iv (O_CREAT)
1102 const_iv (O_TRUNC)
1103 const_iv (O_EXCL)
1104 const_iv (O_APPEND)
632 1105
633 if (!count) 1106 const_iv (O_ASYNC)
634 return 0; 1107 const_iv (O_DIRECT)
1108 const_iv (O_NOATIME)
635 1109
636#if HAVE_SENDFILE 1110 const_iv (O_CLOEXEC)
637# if __linux 1111 const_iv (O_NOCTTY)
638 res = sendfile (ofd, ifd, &offset, count); 1112 const_iv (O_NOFOLLOW)
1113 const_iv (O_NONBLOCK)
1114 const_iv (O_EXEC)
1115 const_iv (O_SEARCH)
1116 const_iv (O_DIRECTORY)
1117 const_iv (O_DSYNC)
1118 const_iv (O_RSYNC)
1119 const_iv (O_SYNC)
1120 const_iv (O_PATH)
1121 const_iv (O_TMPFILE)
1122 const_iv (O_TTY_INIT)
639 1123
640# elif __freebsd 1124 const_iv (S_IFIFO)
641 /* 1125 const_iv (S_IFCHR)
642 * Of course, the freebsd sendfile is a dire hack with no thoughts 1126 const_iv (S_IFBLK)
643 * wasted on making it similar to other I/O functions. 1127 const_iv (S_IFLNK)
644 */ 1128 const_iv (S_IFREG)
1129 const_iv (S_IFDIR)
1130 const_iv (S_IFWHT)
1131 const_iv (S_IFSOCK)
1132 const_iv (S_IFMT)
1133
1134 const_iv (ST_RDONLY)
1135 const_iv (ST_NOSUID)
1136 const_iv (ST_NODEV)
1137 const_iv (ST_NOEXEC)
1138 const_iv (ST_SYNCHRONOUS)
1139 const_iv (ST_MANDLOCK)
1140 const_iv (ST_WRITE)
1141 const_iv (ST_APPEND)
1142 const_iv (ST_IMMUTABLE)
1143 const_iv (ST_NOATIME)
1144 const_iv (ST_NODIRATIME)
1145 const_iv (ST_RELATIME)
1146
1147 const_iv (PROT_NONE)
1148 const_iv (PROT_EXEC)
1149 const_iv (PROT_READ)
1150 const_iv (PROT_WRITE)
1151
1152 const_iv (MAP_PRIVATE)
1153 const_iv (MAP_SHARED)
1154 const_iv (MAP_FIXED)
1155 const_iv (MAP_ANONYMOUS)
1156
1157 /* linuxish */
1158 const_iv (MAP_LOCKED)
1159 const_iv (MAP_NORESERVE)
1160 const_iv (MAP_POPULATE)
1161 const_iv (MAP_NONBLOCK)
1162 const_iv (MAP_GROWSDOWN)
1163 const_iv (MAP_32BIT)
1164 const_iv (MAP_HUGETLB)
1165 const_iv (MAP_STACK)
1166
1167 const_iv (MREMAP_MAYMOVE)
1168 const_iv (MREMAP_FIXED)
1169
1170 const_iv (F_DUPFD_CLOEXEC)
1171
1172 const_iv (MSG_CMSG_CLOEXEC)
1173 const_iv (SOCK_CLOEXEC)
1174
1175 const_iv (F_OFD_GETLK)
1176 const_iv (F_OFD_SETLK)
1177 const_iv (F_OFD_GETLKW)
1178
1179 const_iv (FIFREEZE)
1180 const_iv (FITHAW)
1181 const_iv (FITRIM)
1182 const_iv (FICLONE)
1183 const_iv (FICLONERANGE)
1184 const_iv (FIDEDUPERANGE)
1185
1186 const_iv (FS_IOC_GETFLAGS)
1187 const_iv (FS_IOC_SETFLAGS)
1188 const_iv (FS_IOC_GETVERSION)
1189 const_iv (FS_IOC_SETVERSION)
1190 const_iv (FS_IOC_FIEMAP)
1191 const_iv (FS_IOC_FSGETXATTR)
1192 const_iv (FS_IOC_FSSETXATTR)
1193 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1194 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1195 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1196
1197 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1198
1199 const_iv (FS_SECRM_FL)
1200 const_iv (FS_UNRM_FL)
1201 const_iv (FS_COMPR_FL)
1202 const_iv (FS_SYNC_FL)
1203 const_iv (FS_IMMUTABLE_FL)
1204 const_iv (FS_APPEND_FL)
1205 const_iv (FS_NODUMP_FL)
1206 const_iv (FS_NOATIME_FL)
1207 const_iv (FS_DIRTY_FL)
1208 const_iv (FS_COMPRBLK_FL)
1209 const_iv (FS_NOCOMP_FL)
1210 const_iv (FS_ENCRYPT_FL)
1211 const_iv (FS_BTREE_FL)
1212 const_iv (FS_INDEX_FL)
1213 const_iv (FS_JOURNAL_DATA_FL)
1214 const_iv (FS_NOTAIL_FL)
1215 const_iv (FS_DIRSYNC_FL)
1216 const_iv (FS_TOPDIR_FL)
1217 const_iv (FS_FL_USER_MODIFIABLE)
1218
1219 const_iv (FS_XFLAG_REALTIME)
1220 const_iv (FS_XFLAG_PREALLOC)
1221 const_iv (FS_XFLAG_IMMUTABLE)
1222 const_iv (FS_XFLAG_APPEND)
1223 const_iv (FS_XFLAG_SYNC)
1224 const_iv (FS_XFLAG_NOATIME)
1225 const_iv (FS_XFLAG_NODUMP)
1226 const_iv (FS_XFLAG_RTINHERIT)
1227 const_iv (FS_XFLAG_PROJINHERIT)
1228 const_iv (FS_XFLAG_NOSYMLINKS)
1229 const_iv (FS_XFLAG_EXTSIZE)
1230 const_iv (FS_XFLAG_EXTSZINHERIT)
1231 const_iv (FS_XFLAG_NODEFRAG)
1232 const_iv (FS_XFLAG_FILESTREAM)
1233 const_iv (FS_XFLAG_DAX)
1234 const_iv (FS_XFLAG_HASATTR)
1235
1236 const_iv (FIEMAP_FLAG_SYNC)
1237 const_iv (FIEMAP_FLAG_XATTR)
1238 const_iv (FIEMAP_FLAGS_COMPAT)
1239 const_iv (FIEMAP_EXTENT_LAST)
1240 const_iv (FIEMAP_EXTENT_UNKNOWN)
1241 const_iv (FIEMAP_EXTENT_DELALLOC)
1242 const_iv (FIEMAP_EXTENT_ENCODED)
1243 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1244 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1245 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1246 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1247 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1248 const_iv (FIEMAP_EXTENT_MERGED)
1249 const_iv (FIEMAP_EXTENT_SHARED)
1250
1251 const_iv (SPLICE_F_MOVE)
1252 const_iv (SPLICE_F_NONBLOCK)
1253 const_iv (SPLICE_F_MORE)
1254 const_iv (SPLICE_F_GIFT)
1255
1256 const_iv (EFD_CLOEXEC)
1257 const_iv (EFD_NONBLOCK)
1258 const_iv (EFD_SEMAPHORE)
1259
1260 const_iv (CLOCK_REALTIME)
1261 const_iv (CLOCK_MONOTONIC)
1262 const_iv (CLOCK_BOOTTIME)
1263 const_iv (CLOCK_REALTIME_ALARM)
1264 const_iv (CLOCK_BOOTTIME_ALARM)
1265
1266 const_iv (TFD_NONBLOCK)
1267 const_iv (TFD_CLOEXEC)
1268
1269 const_iv (TFD_TIMER_ABSTIME)
1270 const_iv (TFD_TIMER_CANCEL_ON_SET)
1271
1272 /* these are libeio constants, and are independent of gendef0 */
1273 const_eio (SEEK_SET)
1274 const_eio (SEEK_CUR)
1275 const_eio (SEEK_END)
1276
1277 const_eio (MCL_FUTURE)
1278 const_eio (MCL_CURRENT)
1279 const_eio (MCL_ONFAULT)
1280
1281 const_eio (MS_ASYNC)
1282 const_eio (MS_INVALIDATE)
1283 const_eio (MS_SYNC)
1284
1285 const_eio (MT_MODIFY)
1286
1287 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1288 const_eio (SYNC_FILE_RANGE_WRITE)
1289 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1290
1291 const_eio (FALLOC_FL_KEEP_SIZE)
1292 const_eio (FALLOC_FL_PUNCH_HOLE)
1293 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1294 const_eio (FALLOC_FL_ZERO_RANGE)
1295 const_eio (FALLOC_FL_INSERT_RANGE)
1296 const_eio (FALLOC_FL_UNSHARE_RANGE)
1297
1298 const_eio (RENAME_NOREPLACE)
1299 const_eio (RENAME_EXCHANGE)
1300 const_eio (RENAME_WHITEOUT)
1301
1302 const_eio (READDIR_DENTS)
1303 const_eio (READDIR_DIRS_FIRST)
1304 const_eio (READDIR_STAT_ORDER)
1305 const_eio (READDIR_FOUND_UNKNOWN)
1306
1307 const_eio (DT_UNKNOWN)
1308 const_eio (DT_FIFO)
1309 const_eio (DT_CHR)
1310 const_eio (DT_DIR)
1311 const_eio (DT_BLK)
1312 const_eio (DT_REG)
1313 const_eio (DT_LNK)
1314 const_eio (DT_SOCK)
1315 const_eio (DT_WHT)
1316 };
1317
1318 aio_stash = gv_stashpv ("IO::AIO" , 1);
1319 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1320 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1321 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1322
1323 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1324 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1325
1326 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1327
1328 /* allocate dummy pipe fd for aio_close */
645 { 1329 {
646 off_t sbytes; 1330 int pipefd [2];
647 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648 1331
649 if (res < 0 && sbytes) 1332 if (
650 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1333#ifdef _WIN32
651 res = sbytes; 1334 _pipe (pipefd, 1, _O_BINARY) < 0
1335#else
1336 pipe (pipefd) < 0
1337 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1338#endif
1339 || close (pipefd [1]) < 0
1340 )
1341 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1342
1343 close_fd = pipefd [0];
652 } 1344 }
653 1345
654# elif __hpux 1346 reinit ();
655 res = sendfile (ofd, ifd, offset, count, 0, 0); 1347}
656 1348
657# elif __solaris 1349void
1350reinit ()
1351 PROTOTYPE:
1352
1353void
1354max_poll_reqs (unsigned int nreqs)
1355 PROTOTYPE: $
1356 CODE:
1357 eio_set_max_poll_reqs (nreqs);
1358
1359void
1360max_poll_time (double nseconds)
1361 PROTOTYPE: $
1362 CODE:
1363 eio_set_max_poll_time (nseconds);
1364
1365void
1366min_parallel (unsigned int nthreads)
1367 PROTOTYPE: $
1368 CODE:
1369 eio_set_min_parallel (nthreads);
1370
1371void
1372max_parallel (unsigned int nthreads)
1373 PROTOTYPE: $
1374 CODE:
1375 eio_set_max_parallel (nthreads);
1376
1377void
1378max_idle (unsigned int nthreads)
1379 PROTOTYPE: $
1380 CODE:
1381 eio_set_max_idle (nthreads);
1382
1383void
1384idle_timeout (unsigned int seconds)
1385 PROTOTYPE: $
1386 CODE:
1387 eio_set_idle_timeout (seconds);
1388
1389void
1390max_outstanding (unsigned int maxreqs)
1391 PROTOTYPE: $
1392 CODE:
1393 max_outstanding = maxreqs;
1394
1395void
1396aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1397 PPCODE:
1398{
1399 dREQ;
1400
1401 req->type = EIO_WD_OPEN;
1402 req_set_path1 (req, pathname);
1403
1404 REQ_SEND;
1405}
1406
1407void
1408aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1409 PPCODE:
1410{
1411 dREQ;
1412
1413 req->type = EIO_OPEN;
1414 req_set_path1 (req, pathname);
1415 req->int1 = flags;
1416 req->int2 = mode;
1417
1418 REQ_SEND;
1419}
1420
1421void
1422aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1423 ALIAS:
1424 aio_fsync = EIO_FSYNC
1425 aio_fdatasync = EIO_FDATASYNC
1426 aio_syncfs = EIO_SYNCFS
1427 PPCODE:
1428{
1429 int fd = s_fileno_croak (fh, 0);
1430 dREQ;
1431
1432 req->type = ix;
1433 req->sv1 = newSVsv (fh);
1434 req->int1 = fd;
1435
1436 REQ_SEND;
1437}
1438
1439void
1440aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1441 PPCODE:
1442{
1443 int fd = s_fileno_croak (fh, 0);
1444 dREQ;
1445
1446 req->type = EIO_SYNC_FILE_RANGE;
1447 req->sv1 = newSVsv (fh);
1448 req->int1 = fd;
1449 req->offs = offset;
1450 req->size = nbytes;
1451 req->int2 = flags;
1452
1453 REQ_SEND;
1454}
1455
1456void
1457aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1458 PPCODE:
1459{
1460 int fd = s_fileno_croak (fh, 0);
1461 dREQ;
1462
1463 req->type = EIO_FALLOCATE;
1464 req->sv1 = newSVsv (fh);
1465 req->int1 = fd;
1466 req->int2 = mode;
1467 req->offs = offset;
1468 req->size = len;
1469
1470 REQ_SEND;
1471}
1472
1473void
1474aio_close (SV *fh, SV *callback = &PL_sv_undef)
1475 PPCODE:
1476{
1477 dREQ;
1478 int fd = s_fileno_croak (fh, 0);
1479
1480 /* partially duplicate logic in s_fileno */
1481 SvGETMAGIC (fh);
1482
1483 if (SvROK (fh))
658 { 1484 {
659 struct sendfilevec vec; 1485 fh = SvRV (fh);
660 size_t sbytes; 1486 SvGETMAGIC (fh);
661
662 vec.sfv_fd = ifd;
663 vec.sfv_flag = 0;
664 vec.sfv_off = offset;
665 vec.sfv_len = count;
666
667 res = sendfilev (ofd, &vec, 1, &sbytes);
668
669 if (res < 0 && sbytes)
670 res = sbytes;
671 } 1487 }
672 1488
673# endif 1489 if (SvTYPE (fh) == SVt_PVGV)
674#else
675 res = -1;
676 errno = ENOSYS;
677#endif
678
679 if (res < 0
680 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
681#if __solaris
682 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
683#endif
684 )
685 )
686 {
687 /* emulate sendfile. this is a major pain in the ass */
688 char buf[4096];
689 res = 0;
690
691 while (count)
692 {
693 ssize_t cnt;
694
695 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
696
697 if (cnt <= 0)
698 {
699 if (cnt && !res) res = -1;
700 break;
701 }
702
703 cnt = write (ofd, buf, cnt);
704
705 if (cnt <= 0)
706 {
707 if (cnt && !res) res = -1;
708 break;
709 }
710
711 offset += cnt;
712 res += cnt;
713 count -= cnt;
714 }
715 }
716
717 return res;
718}
719
720/* read a full directory */
721static int scandir_ (const char *path, void **namesp)
722{
723 DIR *dirp = opendir (path);
724 union
725 {
726 struct dirent d;
727 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
728 } u;
729 struct dirent *entp;
730 char *name, *names;
731 int memlen = 4096;
732 int memofs = 0;
733 int res = 0;
734 int errorno;
735
736 if (!dirp)
737 return -1;
738
739 names = malloc (memlen);
740
741 for (;;)
742 {
743 errno = 0, readdir_r (dirp, &u.d, &entp);
744
745 if (!entp)
746 break;
747
748 name = entp->d_name;
749
750 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751 {
752 int len = strlen (name) + 1;
753
754 res++;
755
756 while (memofs + len > memlen)
757 {
758 memlen *= 2;
759 names = realloc (names, memlen);
760 if (!names)
761 break;
762 }
763
764 memcpy (names + memofs, name, len);
765 memofs += len;
766 }
767 }
768
769 errorno = errno;
770 closedir (dirp);
771
772 if (errorno)
773 {
774 free (names);
775 errno = errorno;
776 res = -1;
777 }
778
779 *namesp = (void *)names;
780 return res;
781}
782
783/*****************************************************************************/
784
785static void *aio_proc (void *thr_arg)
786{
787 aio_req req;
788 int type;
789
790 do
791 {
792 pthread_mutex_lock (&reqlock);
793
794 for (;;)
795 {
796 req = reqs;
797
798 if (reqs)
799 {
800 reqs = reqs->next;
801 if (!reqs) reqe = 0;
802 }
803
804 if (req)
805 break;
806
807 pthread_cond_wait (&reqwait, &reqlock);
808 }
809
810 pthread_mutex_unlock (&reqlock);
811
812 errno = 0; /* strictly unnecessary */
813 type = req->type; /* remember type for QUIT check */
814
815 if (!(req->flags & FLAG_CANCELLED))
816 switch (type)
817 { 1490 {
818 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1491 /* perl filehandle */
819 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1492 PerlIOUnix_refcnt_inc (fd);
1493 do_close ((GV *)fh, 1);
820 1494
821 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
822 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
823
824 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
825 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
826 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
827
828 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
829 case REQ_CLOSE: req->result = close (req->fd); break;
830 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
831 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
832 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
833 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
834 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
835
836 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
837 case REQ_FSYNC: req->result = fsync (req->fd); break;
838 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
839
840 case REQ_SLEEP:
841 {
842 struct timeval tv;
843
844 tv.tv_sec = req->fd;
845 tv.tv_usec = req->fd2;
846
847 req->result = select (0, 0, 0, 0, &tv);
848 }
849
850 case REQ_GROUP:
851 case REQ_NOP:
852 case REQ_QUIT:
853 break;
854
855 default:
856 req->result = ENOSYS;
857 break;
858 }
859
860 req->errorno = errno;
861
862 pthread_mutex_lock (&reslock);
863
864 req->next = 0;
865
866 if (rese)
867 {
868 rese->next = req;
869 rese = req;
870 }
871 else
872 {
873 rese = ress = req;
874
875 /* write a dummy byte to the pipe so fh becomes ready */
876 write (respipe [1], &respipe, 1);
877 }
878
879 pthread_mutex_unlock (&reslock);
880 }
881 while (type != REQ_QUIT);
882
883 return 0;
884}
885
886/*****************************************************************************/
887
888static void atfork_prepare (void)
889{
890 pthread_mutex_lock (&reqlock);
891 pthread_mutex_lock (&reslock);
892#if !HAVE_PREADWRITE
893 pthread_mutex_lock (&preadwritelock);
894#endif
895#if !HAVE_READDIR_R
896 pthread_mutex_lock (&readdirlock);
897#endif
898}
899
900static void atfork_parent (void)
901{
902#if !HAVE_READDIR_R
903 pthread_mutex_unlock (&readdirlock);
904#endif
905#if !HAVE_PREADWRITE
906 pthread_mutex_unlock (&preadwritelock);
907#endif
908 pthread_mutex_unlock (&reslock);
909 pthread_mutex_unlock (&reqlock);
910}
911
912static void atfork_child (void)
913{
914 aio_req prv;
915
916 started = 0;
917
918 while (reqs)
919 {
920 prv = reqs;
921 reqs = prv->next;
922 req_free (prv);
923 }
924
925 reqs = reqe = 0;
926
927 while (ress)
928 {
929 prv = ress;
930 ress = prv->next;
931 req_free (prv);
932 }
933
934 ress = rese = 0;
935
936 close (respipe [0]);
937 close (respipe [1]);
938 create_pipe ();
939
940 atfork_parent ();
941}
942
943#define dREQ \
944 aio_req req; \
945 int req_pri = next_pri; \
946 next_pri = DEFAULT_PRI + PRI_BIAS; \
947 \
948 if (SvOK (callback) && !SvROK (callback)) \
949 croak ("callback must be undef or of reference type"); \
950 \
951 Newz (0, req, 1, aio_cb); \
952 if (!req) \
953 croak ("out of memory during aio_req allocation"); \
954 \
955 req->callback = newSVsv (callback); \
956 req->pri = req_pri
957
958#define REQ_SEND \
959 req_send (req); \
960 \
961 if (GIMME_V != G_VOID) \
962 XPUSHs (req_sv (req, AIO_REQ_KLASS));
963
964MODULE = IO::AIO PACKAGE = IO::AIO
965
966PROTOTYPES: ENABLE
967
968BOOT:
969{
970 HV *stash = gv_stashpv ("IO::AIO", 1);
971 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
972 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
973 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
974
975 create_pipe ();
976 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
977}
978
979void
980min_parallel (nthreads)
981 int nthreads
982 PROTOTYPE: $
983
984void
985max_parallel (nthreads)
986 int nthreads
987 PROTOTYPE: $
988
989int
990max_outstanding (nreqs)
991 int nreqs
992 PROTOTYPE: $
993 CODE:
994 RETVAL = max_outstanding;
995 max_outstanding = nreqs;
996
997void
998aio_open (pathname,flags,mode,callback=&PL_sv_undef)
999 SV * pathname
1000 int flags
1001 int mode
1002 SV * callback
1003 PROTOTYPE: $$$;$
1004 PPCODE:
1005{
1006 dREQ;
1007
1008 req->type = REQ_OPEN; 1495 req->type = EIO_CLOSE;
1009 req->data = newSVsv (pathname); 1496 req->int1 = fd;
1010 req->dataptr = SvPVbyte_nolen (req->data);
1011 req->fd = flags;
1012 req->mode = mode;
1013
1014 REQ_SEND;
1015}
1016
1017void
1018aio_close (fh,callback=&PL_sv_undef)
1019 SV * fh
1020 SV * callback
1021 PROTOTYPE: $;$
1022 ALIAS:
1023 aio_close = REQ_CLOSE
1024 aio_fsync = REQ_FSYNC
1025 aio_fdatasync = REQ_FDATASYNC
1026 PPCODE:
1027{
1028 dREQ;
1029
1030 req->type = ix;
1031 req->fh = newSVsv (fh); 1497 req->sv2 = newSVsv (fh);
1032 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1033
1034 REQ_SEND (req);
1035}
1036
1037void
1038aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1039 SV * fh
1040 UV offset
1041 UV length
1042 SV * data
1043 UV dataoffset
1044 SV * callback
1045 ALIAS:
1046 aio_read = REQ_READ
1047 aio_write = REQ_WRITE
1048 PROTOTYPE: $$$$$;$
1049 PPCODE:
1050{
1051 aio_req req;
1052 STRLEN svlen;
1053 char *svptr = SvPVbyte (data, svlen);
1054
1055 SvUPGRADE (data, SVt_PV);
1056 SvPOK_on (data);
1057
1058 if (dataoffset < 0)
1059 dataoffset += svlen;
1060
1061 if (dataoffset < 0 || dataoffset > svlen)
1062 croak ("data offset outside of string");
1063
1064 if (ix == REQ_WRITE)
1065 {
1066 /* write: check length and adjust. */
1067 if (length < 0 || length + dataoffset > svlen)
1068 length = svlen - dataoffset;
1069 } 1498 }
1070 else 1499 else
1071 { 1500 {
1072 /* read: grow scalar as necessary */ 1501 /* fd number */
1073 svptr = SvGROW (data, length + dataoffset); 1502 req->type = EIO_DUP2;
1503 req->int1 = close_fd;
1504 req->sv2 = newSVsv (fh);
1505 req->int2 = fd;
1074 } 1506 }
1075 1507
1508 REQ_SEND;
1509}
1510
1511void
1512aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1513 PPCODE:
1514{
1515 int fd = s_fileno_croak (fh, 0);
1516 dREQ;
1517
1518 req->type = EIO_SEEK;
1519 req->sv1 = newSVsv (fh);
1520 req->int1 = fd;
1521 req->offs = SvVAL64 (offset);
1522 req->int2 = whence;
1523
1524 REQ_SEND;
1525}
1526
1527void
1528aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1529 ALIAS:
1530 aio_read = EIO_READ
1531 aio_write = EIO_WRITE
1532 PPCODE:
1533{
1534 STRLEN svlen;
1535 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1536 char *svptr = SvPVbyte (data, svlen);
1537 UV len = SvUV (length);
1538
1076 if (length < 0) 1539 if (dataoffset < 0)
1077 croak ("length must not be negative"); 1540 dataoffset += svlen;
1541
1542 if (dataoffset < 0 || dataoffset > svlen)
1543 croak ("dataoffset outside of data scalar");
1544
1545 if (ix == EIO_WRITE)
1546 {
1547 /* write: check length and adjust. */
1548 if (!SvOK (length) || len + dataoffset > svlen)
1549 len = svlen - dataoffset;
1550 }
1551 else
1552 {
1553 /* read: check type and grow scalar as necessary */
1554 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1555 svptr = sv_grow (data, len + dataoffset + 1);
1556 else if (SvCUR (data) < len + dataoffset)
1557 croak ("length + dataoffset outside of scalar, and cannot grow");
1558 }
1078 1559
1079 { 1560 {
1080 dREQ; 1561 dREQ;
1081 1562
1082 req->type = ix; 1563 req->type = ix;
1083 req->fh = newSVsv (fh); 1564 req->sv1 = newSVsv (fh);
1084 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1565 req->int1 = fd;
1085 : IoOFP (sv_2io (fh))); 1566 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1086 req->offset = offset; 1567 req->size = len;
1087 req->length = length;
1088 req->data = SvREFCNT_inc (data); 1568 req->sv2 = SvREFCNT_inc (data);
1089 req->dataptr = (char *)svptr + dataoffset; 1569 req->ptr2 = (char *)svptr + dataoffset;
1570 req->stroffset = dataoffset;
1090 1571
1091 if (!SvREADONLY (data)) 1572 if (!SvREADONLY (data))
1092 { 1573 {
1093 SvREADONLY_on (data); 1574 SvREADONLY_on (data);
1094 req->data2ptr = (void *)data; 1575 req->flags |= FLAG_SV2_RO_OFF;
1095 } 1576 }
1096 1577
1097 REQ_SEND; 1578 REQ_SEND;
1098 } 1579 }
1099} 1580}
1100 1581
1101void 1582void
1102aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1583aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1103 SV * out_fh 1584 ALIAS:
1104 SV * in_fh 1585 aio_ioctl = EIO_IOCTL
1105 UV in_offset 1586 aio_fcntl = EIO_FCNTL
1106 UV length
1107 SV * callback
1108 PROTOTYPE: $$$$;$
1109 PPCODE: 1587 PPCODE:
1110{ 1588{
1111 dREQ; 1589 int fd = s_fileno_croak (fh, 0);
1590 char *svptr;
1112 1591
1113 req->type = REQ_SENDFILE; 1592 if (SvPOK (arg) || !SvNIOK (arg))
1114 req->fh = newSVsv (out_fh);
1115 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1116 req->fh2 = newSVsv (in_fh);
1117 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1118 req->offset = in_offset;
1119 req->length = length;
1120
1121 REQ_SEND;
1122}
1123
1124void
1125aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1126 SV * fh
1127 UV offset
1128 IV length
1129 SV * callback
1130 PROTOTYPE: $$$;$
1131 PPCODE:
1132{
1133 dREQ;
1134
1135 req->type = REQ_READAHEAD;
1136 req->fh = newSVsv (fh);
1137 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1138 req->offset = offset;
1139 req->length = length;
1140
1141 REQ_SEND;
1142}
1143
1144void
1145aio_stat (fh_or_path,callback=&PL_sv_undef)
1146 SV * fh_or_path
1147 SV * callback
1148 ALIAS:
1149 aio_stat = REQ_STAT
1150 aio_lstat = REQ_LSTAT
1151 PPCODE:
1152{
1153 dREQ;
1154
1155 New (0, req->statdata, 1, Stat_t);
1156 if (!req->statdata)
1157 { 1593 {
1158 req_free (req); 1594 STRLEN svlen;
1159 croak ("out of memory during aio_req->statdata allocation"); 1595 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1160 } 1596#ifdef IOCPARM_LEN
1597 STRLEN need = IOCPARM_LEN (request);
1598#else
1599 STRLEN need = 256;
1600#endif
1161 1601
1162 if (SvPOK (fh_or_path)) 1602 if (svlen < need)
1163 { 1603 svptr = SvGROW (arg, need);
1164 req->type = ix;
1165 req->data = newSVsv (fh_or_path);
1166 req->dataptr = SvPVbyte_nolen (req->data);
1167 } 1604 }
1168 else 1605 else
1606 svptr = (char *)SvIV (arg);
1607
1169 { 1608 {
1609 dREQ;
1610
1170 req->type = REQ_FSTAT; 1611 req->type = ix;
1171 req->fh = newSVsv (fh_or_path); 1612 req->sv1 = newSVsv (fh);
1172 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1613 req->int1 = fd;
1614 req->int2 = (long)request;
1615 req->sv2 = SvREFCNT_inc (arg);
1616 req->ptr2 = svptr;
1617
1618 REQ_SEND;
1173 } 1619 }
1620}
1621
1622void
1623aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1624 ALIAS:
1625 aio_readlink = EIO_READLINK
1626 aio_realpath = EIO_REALPATH
1627 PPCODE:
1628{
1629 dREQ;
1630
1631 req->type = ix;
1632 req_set_path1 (req, pathname);
1174 1633
1175 REQ_SEND; 1634 REQ_SEND;
1176} 1635}
1177 1636
1178void 1637void
1179aio_unlink (pathname,callback=&PL_sv_undef) 1638aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1180 SV * pathname 1639 PPCODE:
1181 SV * callback 1640{
1641 int ifd = s_fileno_croak (in_fh , 0);
1642 int ofd = s_fileno_croak (out_fh, 1);
1643 dREQ;
1644
1645 req->type = EIO_SENDFILE;
1646 req->sv1 = newSVsv (out_fh);
1647 req->int1 = ofd;
1648 req->sv2 = newSVsv (in_fh);
1649 req->int2 = ifd;
1650 req->offs = in_offset;
1651 req->size = length;
1652
1653 REQ_SEND;
1654}
1655
1656void
1657aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1658 PPCODE:
1659{
1660 int fd = s_fileno_croak (fh, 0);
1661 dREQ;
1662
1663 req->type = EIO_READAHEAD;
1664 req->sv1 = newSVsv (fh);
1665 req->int1 = fd;
1666 req->offs = offset;
1667 req->size = length;
1668
1669 REQ_SEND;
1670}
1671
1672void
1673aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1182 ALIAS: 1674 ALIAS:
1675 aio_stat = EIO_STAT
1676 aio_lstat = EIO_LSTAT
1677 aio_statvfs = EIO_STATVFS
1678 PPCODE:
1679{
1680 dREQ;
1681
1682 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1683
1684 REQ_SEND;
1685}
1686
1687void
1688st_xtime ()
1689 ALIAS:
1690 st_atime = 0x01
1691 st_mtime = 0x02
1692 st_ctime = 0x04
1693 st_btime = 0x08
1694 st_xtime = 0x0f
1695 PPCODE:
1696 EXTEND (SP, 4);
1697 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1698 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1699 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1700 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1701
1702void
1703st_xtimensec ()
1704 ALIAS:
1705 st_atimensec = 0x01
1706 st_mtimensec = 0x02
1707 st_ctimensec = 0x04
1708 st_btimensec = 0x08
1709 st_xtimensec = 0x0f
1710 st_btimesec = 0x10
1711 st_gen = 0x20
1712 PPCODE:
1713 EXTEND (SP, 4);
1714 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1715 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1716 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1717 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1718 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1719 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1720
1721UV
1722major (UV dev)
1723 ALIAS:
1724 minor = 1
1725 CODE:
1726 RETVAL = ix ? minor (dev) : major (dev);
1727 OUTPUT:
1728 RETVAL
1729
1730UV
1731makedev (UV maj, UV min)
1732 CODE:
1733 RETVAL = makedev (maj, min);
1734 OUTPUT:
1735 RETVAL
1736
1737void
1738aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1739 PPCODE:
1740{
1741 dREQ;
1742
1743 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1744 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1745 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1746
1747 REQ_SEND;
1748}
1749
1750void
1751aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1752 PPCODE:
1753{
1754 dREQ;
1755
1756 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1757 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1758
1759 REQ_SEND;
1760}
1761
1762void
1763aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1764 PPCODE:
1765{
1766 dREQ;
1767
1768 req->int2 = mode;
1769 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1770
1771 REQ_SEND;
1772}
1773
1774void
1775aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1776 PPCODE:
1777{
1778 dREQ;
1779
1780 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1781 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1782 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1783
1784 REQ_SEND;
1785}
1786
1787void
1788aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1789 PPCODE:
1790{
1791 dREQ;
1792
1793 req->type = EIO_READDIR;
1794 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1795
1796 if (flags & EIO_READDIR_DENTS)
1797 req->int1 |= EIO_READDIR_CUSTOM2;
1798
1799 req_set_path1 (req, pathname);
1800
1801 REQ_SEND;
1802}
1803
1804void
1805aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1806 PPCODE:
1807{
1808 dREQ;
1809
1810 req->type = EIO_MKDIR;
1811 req->int2 = mode;
1812 req_set_path1 (req, pathname);
1813
1814 REQ_SEND;
1815}
1816
1817void
1818aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1819 ALIAS:
1183 aio_unlink = REQ_UNLINK 1820 aio_unlink = EIO_UNLINK
1184 aio_rmdir = REQ_RMDIR 1821 aio_rmdir = EIO_RMDIR
1185 aio_readdir = REQ_READDIR 1822 aio_readdir = EIO_READDIR
1186 PPCODE: 1823 PPCODE:
1187{ 1824{
1188 dREQ; 1825 dREQ;
1189 1826
1190 req->type = ix; 1827 req->type = ix;
1191 req->data = newSVsv (pathname); 1828 req_set_path1 (req, pathname);
1192 req->dataptr = SvPVbyte_nolen (req->data); 1829
1193
1194 REQ_SEND; 1830 REQ_SEND;
1195} 1831}
1196 1832
1197void 1833void
1198aio_link (oldpath,newpath,callback=&PL_sv_undef) 1834aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1199 SV * oldpath
1200 SV * newpath
1201 SV * callback
1202 ALIAS: 1835 ALIAS:
1203 aio_link = REQ_LINK 1836 aio_link = EIO_LINK
1204 aio_symlink = REQ_SYMLINK 1837 aio_symlink = EIO_SYMLINK
1205 aio_rename = REQ_RENAME 1838 aio_rename = EIO_RENAME
1206 PPCODE: 1839 PPCODE:
1207{ 1840{
1841 eio_wd wd2 = 0;
1208 dREQ; 1842 dREQ;
1209 1843
1210 req->type = ix; 1844 req->type = ix;
1211 req->fh = newSVsv (oldpath); 1845 req_set_path1 (req, oldpath);
1212 req->data2ptr = SvPVbyte_nolen (req->fh); 1846 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1213 req->data = newSVsv (newpath); 1847 req->int3 = (long)wd2;
1214 req->dataptr = SvPVbyte_nolen (req->data);
1215 1848
1216 REQ_SEND; 1849 REQ_SEND;
1217} 1850}
1218 1851
1219void 1852void
1220aio_sleep (delay,callback=&PL_sv_undef) 1853aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1221 double delay
1222 SV * callback
1223 PPCODE: 1854 PPCODE:
1224{ 1855{
1856 eio_wd wd2 = 0;
1225 dREQ; 1857 dREQ;
1226 1858
1227 req->type = REQ_SLEEP; 1859 req->type = EIO_RENAME;
1228 req->fd = delay < 0. ? 0 : delay; 1860 req_set_path1 (req, oldpath);
1229 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1861 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1230 1862 req->int2 = flags;
1863 req->int3 = (long)wd2;
1864
1231 REQ_SEND; 1865 REQ_SEND;
1232} 1866}
1233 1867
1234void 1868void
1235aio_group (callback=&PL_sv_undef) 1869aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1236 SV * callback 1870 PPCODE:
1237 PROTOTYPE: ;$ 1871{
1872 dREQ;
1873
1874 req->type = EIO_MKNOD;
1875 req->int2 = (mode_t)mode;
1876 req->offs = dev;
1877 req_set_path1 (req, pathname);
1878
1879 REQ_SEND;
1880}
1881
1882void
1883aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1884 ALIAS:
1885 aio_mtouch = EIO_MTOUCH
1886 aio_msync = EIO_MSYNC
1238 PPCODE: 1887 PPCODE:
1239{ 1888{
1889 STRLEN svlen;
1890 char *svptr = SvPVbyte (data, svlen);
1891 UV len = SvUV (length);
1892
1893 if (flags < 0)
1894 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1895
1896 if (offset < 0)
1897 offset += svlen;
1898
1899 if (offset < 0 || offset > svlen)
1900 croak ("offset outside of scalar");
1901
1902 if (!SvOK (length) || len + offset > svlen)
1903 len = svlen - offset;
1904
1905 {
1906 dREQ;
1907
1908 req->type = ix;
1909 req->sv2 = SvREFCNT_inc (data);
1910 req->ptr2 = (char *)svptr + offset;
1911 req->size = len;
1912 req->int1 = flags;
1913
1914 REQ_SEND;
1915 }
1916}
1917
1918void
1919aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1920 PPCODE:
1921{
1922 STRLEN svlen;
1923 char *svptr = SvPVbyte (data, svlen);
1924 UV len = SvUV (length);
1925
1926 if (offset < 0)
1927 offset += svlen;
1928
1929 if (offset < 0 || offset > svlen)
1930 croak ("offset outside of scalar");
1931
1932 if (!SvOK (length) || len + offset > svlen)
1933 len = svlen - offset;
1934
1935 {
1936 dREQ;
1937
1938 req->type = EIO_MLOCK;
1939 req->sv2 = SvREFCNT_inc (data);
1940 req->ptr2 = (char *)svptr + offset;
1941 req->size = len;
1942
1943 REQ_SEND;
1944 }
1945}
1946
1947void
1948aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1949 PPCODE:
1950{
1951 dREQ;
1952
1953 req->type = EIO_MLOCKALL;
1954 req->int1 = flags;
1955
1956 REQ_SEND;
1957}
1958
1959void
1960aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1961 PPCODE:
1962{
1963 int fd = s_fileno_croak (fh, 0);
1240 dREQ; 1964 dREQ;
1241 1965
1242 req->type = REQ_GROUP; 1966 req->type = EIO_CUSTOM;
1243 req_send (req); 1967 req->sv1 = newSVsv (fh);
1968 req->int1 = fd;
1244 1969
1245 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1970 req->feed = fiemap;
1246} 1971#if HAVE_FIEMAP
1972 /* keep our fingers crossed that the next two types are 64 bit */
1973 req->offs = start;
1974 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1975 req->int2 = flags;
1976 req->int3 = SvOK (count) ? SvIV (count) : -1;
1977#endif
1247 1978
1979 REQ_SEND;
1980}
1981
1248void 1982void
1249aio_nop (callback=&PL_sv_undef) 1983aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1250 SV * callback 1984 PPCODE:
1985{
1986 char *svptr = 0;
1987
1988 sv_clear_foreign (data);
1989
1990 if (length) /* known length, directly read into scalar */
1991 {
1992 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1993 svptr = sv_grow (data, length + 1);
1994 else if (SvCUR (data) < length)
1995 croak ("length outside of scalar, and cannot grow");
1996 else
1997 svptr = SvPVbyte_nolen (data);
1998 }
1999
2000 {
2001 dREQ;
2002
2003 req->type = EIO_SLURP;
2004 req_set_path1 (req, pathname);
2005 req->offs = offset;
2006 req->size = length;
2007 req->sv2 = SvREFCNT_inc (data);
2008 req->ptr2 = svptr;
2009
2010 if (!SvREADONLY (data))
2011 {
2012 SvREADONLY_on (data);
2013 req->flags |= FLAG_SV2_RO_OFF;
2014 }
2015
2016 REQ_SEND;
2017 }
2018}
2019
2020void
2021aio_busy (double delay, SV *callback = &PL_sv_undef)
1251 PPCODE: 2022 PPCODE:
1252{ 2023{
1253 dREQ; 2024 dREQ;
1254 2025
1255 req->type = REQ_NOP; 2026 req->type = EIO_BUSY;
2027 req->nv1 = delay < 0. ? 0. : delay;
1256 2028
1257 REQ_SEND; 2029 REQ_SEND;
1258} 2030}
1259 2031
1260#if 0
1261
1262void 2032void
1263aio_pri (int pri = DEFAULT_PRI) 2033aio_group (SV *callback = &PL_sv_undef)
2034 PPCODE:
2035{
2036 dREQ;
2037
2038 req->type = EIO_GROUP;
2039
2040 PUTBACK;
2041 req_submit (req);
2042 SPAGAIN;
2043
2044 XPUSHs (req_sv (req, aio_grp_stash));
2045}
2046
2047void
2048aio_nop (SV *callback = &PL_sv_undef)
2049 ALIAS:
2050 aio_nop = EIO_NOP
2051 aio_sync = EIO_SYNC
2052 PPCODE:
2053{
2054 dREQ;
2055
2056 req->type = ix;
2057
2058 REQ_SEND;
2059}
2060
2061int
2062aioreq_pri (int pri = NO_INIT)
1264 CODE: 2063 CODE:
2064 RETVAL = next_pri;
2065 if (items > 0)
2066 {
1265 if (pri < PRI_MIN) pri = PRI_MIN; 2067 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1266 if (pri > PRI_MAX) pri = PRI_MAX; 2068 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1267 next_pri = pri + PRI_BIAS; 2069 next_pri = pri;
2070 }
2071 OUTPUT:
2072 RETVAL
1268 2073
1269#endif 2074void
2075aioreq_nice (int nice = 0)
2076 CODE:
2077 nice = next_pri - nice;
2078 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2079 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2080 next_pri = nice;
1270 2081
1271void 2082void
1272flush () 2083flush ()
1273 PROTOTYPE:
1274 CODE: 2084 CODE:
1275 while (nreqs) 2085 while (eio_nreqs ())
1276 { 2086 {
1277 poll_wait (); 2087 poll_wait ();
1278 poll_cb (); 2088 poll_cb ();
1279 } 2089 }
1280 2090
1281void 2091int
1282poll() 2092poll ()
1283 PROTOTYPE:
1284 CODE: 2093 CODE:
1285 if (nreqs)
1286 {
1287 poll_wait (); 2094 poll_wait ();
1288 poll_cb (); 2095 RETVAL = poll_cb ();
1289 }
1290
1291int
1292poll_fileno()
1293 PROTOTYPE:
1294 CODE:
1295 RETVAL = respipe [0];
1296 OUTPUT: 2096 OUTPUT:
1297 RETVAL 2097 RETVAL
1298 2098
1299int 2099int
2100poll_fileno ()
2101 CODE:
2102 RETVAL = s_epipe_fd (&respipe);
2103 OUTPUT:
2104 RETVAL
2105
2106int
1300poll_cb(...) 2107poll_cb (...)
1301 PROTOTYPE: 2108 PROTOTYPE:
1302 CODE: 2109 CODE:
1303 RETVAL = poll_cb (); 2110 RETVAL = poll_cb ();
1304 OUTPUT: 2111 OUTPUT:
1305 RETVAL 2112 RETVAL
1306 2113
1307void 2114void
1308poll_wait() 2115poll_wait ()
1309 PROTOTYPE:
1310 CODE: 2116 CODE:
1311 if (nreqs)
1312 poll_wait (); 2117 poll_wait ();
1313 2118
1314int 2119int
1315nreqs() 2120nreqs ()
1316 PROTOTYPE:
1317 CODE: 2121 CODE:
1318 RETVAL = nreqs; 2122 RETVAL = eio_nreqs ();
1319 OUTPUT: 2123 OUTPUT:
1320 RETVAL 2124 RETVAL
1321 2125
2126int
2127nready ()
2128 CODE:
2129 RETVAL = eio_nready ();
2130 OUTPUT:
2131 RETVAL
2132
2133int
2134npending ()
2135 CODE:
2136 RETVAL = eio_npending ();
2137 OUTPUT:
2138 RETVAL
2139
2140int
2141nthreads ()
2142 CODE:
2143 RETVAL = eio_nthreads ();
2144 OUTPUT:
2145 RETVAL
2146
2147int
2148fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2149 CODE:
2150 RETVAL = posix_fadvise (fh, offset, length, advice);
2151 OUTPUT:
2152 RETVAL
2153
2154IV
2155sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2156 CODE:
2157 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2158 OUTPUT:
2159 RETVAL
2160
2161void
2162mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2163 PPCODE:
2164 sv_clear_foreign (scalar);
2165{
2166 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2167 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2168 if (addr == (void *)-1)
2169 XSRETURN_NO;
2170
2171 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2172
2173 if (!(prot & PROT_WRITE))
2174 SvREADONLY_on (scalar);
2175
2176 XSRETURN_YES;
2177}
2178
2179void
2180munmap (SV *scalar)
2181 CODE:
2182 sv_clear_foreign (scalar);
2183
2184SV *
2185mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2186 CODE:
2187{
2188 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2189 void *new;
2190
2191 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2192 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2193
2194 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2195
2196 RETVAL = &PL_sv_no;
2197
2198 if (new != (void *)-1)
2199 {
2200 RETVAL = new == (void *)mg->mg_ptr
2201 ? newSVpvn ("0 but true", 10)
2202 : &PL_sv_yes;
2203
2204 mg->mg_ptr = (char *)new;
2205 mg->mg_obj = (SV *)new_length;
2206
2207 SvPVX (scalar) = mg->mg_ptr;
2208 SvCUR_set (scalar, new_length);
2209 }
2210}
2211 OUTPUT:
2212 RETVAL
2213
2214int
2215madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2216 ALIAS:
2217 mprotect = 1
2218 CODE:
2219{
2220 STRLEN svlen;
2221 void *addr = SvPVbyte (scalar, svlen);
2222 STRLEN len = SvUV (length);
2223
2224 if (offset < 0)
2225 offset += svlen;
2226
2227 if (offset < 0 || offset > svlen)
2228 croak ("offset outside of scalar");
2229
2230 if (!SvOK (length) || len + offset > svlen)
2231 len = svlen - offset;
2232
2233 addr = (void *)(((intptr_t)addr) + offset);
2234 eio_page_align (&addr, &len);
2235
2236 switch (ix)
2237 {
2238 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2239 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2240 }
2241}
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2247 CODE:
2248{
2249 STRLEN svlen;
2250 void *addr = SvPVbyte (scalar, svlen);
2251 size_t len = SvUV (length);
2252
2253 if (offset < 0)
2254 offset += svlen;
2255
2256 if (offset < 0 || offset > svlen)
2257 croak ("offset outside of scalar");
2258
2259 if (!SvOK (length) || len + offset > svlen)
2260 len = svlen - offset;
2261
2262 addr = (void *)(((intptr_t)addr) + offset);
2263 eio_page_align (&addr, &len);
2264#if _POSIX_MEMLOCK_RANGE
2265 RETVAL = munlock (addr, len);
2266#else
2267 RETVAL = EIO_ENOSYS ();
2268#endif
2269}
2270 OUTPUT:
2271 RETVAL
2272
2273int
2274mlockall (int flags)
2275 PROTOTYPE: $;
2276 CODE:
2277 RETVAL = eio_mlockall_sync (flags);
2278 OUTPUT:
2279 RETVAL
2280
2281int
2282munlockall ()
2283 CODE:
2284#if _POSIX_MEMLOCK
2285 munlockall ();
2286#else
2287 RETVAL = EIO_ENOSYS ();
2288#endif
2289 OUTPUT:
2290 RETVAL
2291
2292int
2293splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2294 CODE:
2295{
2296#if HAVE_LINUX_SPLICE
2297 loff_t off_in_, off_out_;
2298 RETVAL = splice (
2299 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2300 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2301 length, flags
2302 );
2303#else
2304 RETVAL = EIO_ENOSYS ();
2305#endif
2306}
2307 OUTPUT:
2308 RETVAL
2309
2310int
2311tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2312 CODE:
2313#if HAVE_LINUX_SPLICE
2314 RETVAL = tee (rfh, wfh, length, flags);
2315#else
2316 RETVAL = EIO_ENOSYS ();
2317#endif
2318 OUTPUT:
2319 RETVAL
2320
2321int
2322pipesize (aio_rfd rfh, int new_size = -1)
2323 PROTOTYPE: $;$
2324 CODE:
2325#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2326 if (new_size >= 0)
2327 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2328 else
2329 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2330#else
2331 errno = ENOSYS;
2332 RETVAL = -1;
2333#endif
2334 OUTPUT:
2335 RETVAL
2336
2337void
2338pipe2 (int flags = 0)
2339 PROTOTYPE: ;$
2340 PPCODE:
2341{
2342 int fd[2];
2343 int res;
2344
2345 if (flags)
2346#if HAVE_PIPE2
2347 res = pipe2 (fd, flags);
2348#else
2349 res = (errno = ENOSYS, -1);
2350#endif
2351 else
2352 res = pipe (fd);
2353
2354 if (!res)
2355 {
2356 EXTEND (SP, 2);
2357 PUSHs (newmortalFH (fd[0], O_RDONLY));
2358 PUSHs (newmortalFH (fd[1], O_WRONLY));
2359 }
2360}
2361
2362void
2363eventfd (unsigned int initval = 0, int flags = 0)
2364 PPCODE:
2365{
2366 int fd;
2367#if HAVE_EVENTFD
2368 fd = eventfd (initval, flags);
2369#else
2370 fd = (errno = ENOSYS, -1);
2371#endif
2372
2373 XPUSHs (newmortalFH (fd, O_RDWR));
2374}
2375
2376void
2377timerfd_create (int clockid, int flags = 0)
2378 PPCODE:
2379{
2380 int fd;
2381#if HAVE_TIMERFD
2382 fd = timerfd_create (clockid, flags);
2383#else
2384 fd = (errno = ENOSYS, -1);
2385#endif
2386
2387 XPUSHs (newmortalFH (fd, O_RDWR));
2388}
2389
2390void
2391timerfd_settime (SV *fh, int flags, NV interval, NV value)
2392 PPCODE:
2393{
2394 int fd = s_fileno_croak (fh, 0);
2395#if HAVE_TIMERFD
2396 int res;
2397 struct itimerspec its, ots;
2398
2399 ts_set (&its.it_interval, interval);
2400 ts_set (&its.it_value , value);
2401 res = timerfd_settime (fd, flags, &its, &ots);
2402
2403 if (!res)
2404 {
2405 EXTEND (SP, 2);
2406 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2407 PUSHs (newSVnv (ts_get (&ots.it_value)));
2408 }
2409#else
2410 errno = ENOSYS;
2411#endif
2412}
2413
2414void
2415timerfd_gettime (SV *fh)
2416 PPCODE:
2417{
2418 int fd = s_fileno_croak (fh, 0);
2419#if HAVE_TIMERFD
2420 int res;
2421 struct itimerspec ots;
2422 res = timerfd_gettime (fd, &ots);
2423
2424 if (!res)
2425 {
2426 EXTEND (SP, 2);
2427 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2428 PUSHs (newSVnv (ts_get (&ots.it_value)));
2429 }
2430#else
2431 errno = ENOSYS;
2432#endif
2433}
2434
2435UV
2436get_fdlimit ()
2437 CODE:
2438#if HAVE_RLIMITS
2439 struct rlimit rl;
2440 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2441 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2442#endif
2443 XSRETURN_UNDEF;
2444 OUTPUT:
2445 RETVAL
2446
2447void
2448min_fdlimit (UV limit = 0x7fffffffU)
2449 CODE:
2450{
2451#if HAVE_RLIMITS
2452 struct rlimit rl;
2453 rlim_t orig_rlim_max;
2454 UV bit;
2455
2456 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2457 goto fail;
2458
2459 if (rl.rlim_cur == RLIM_INFINITY)
2460 XSRETURN_YES;
2461
2462 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2463
2464 if (rl.rlim_cur < limit)
2465 {
2466 rl.rlim_cur = limit;
2467
2468 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2469 rl.rlim_max = rl.rlim_cur;
2470 }
2471
2472 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2473 XSRETURN_YES;
2474
2475 if (errno == EPERM)
2476 {
2477 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2478 /* our limit overflows a system-wide limit */
2479 /* try an adaptive algorithm, but do not lower the hardlimit */
2480 rl.rlim_max = 0;
2481 for (bit = 0x40000000U; bit; bit >>= 1)
2482 {
2483 rl.rlim_max |= bit;
2484 rl.rlim_cur = rl.rlim_max;
2485
2486 /* nevr decrease the hard limit */
2487 if (rl.rlim_max < orig_rlim_max)
2488 break;
2489
2490 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2491 rl.rlim_max &= ~bit; /* too high, remove bit again */
2492 }
2493
2494 /* now, raise the soft limit to the max permitted */
2495 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2496 {
2497 rl.rlim_cur = rl.rlim_max;
2498 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2499 errno = EPERM;
2500 }
2501 }
2502#endif
2503 fail:
2504 XSRETURN_UNDEF;
2505}
2506
2507void _on_next_submit (SV *cb)
2508 CODE:
2509 SvREFCNT_dec (on_next_submit);
2510 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2511
1322PROTOTYPES: DISABLE 2512PROTOTYPES: DISABLE
1323 2513
2514MODULE = IO::AIO PACKAGE = IO::AIO::WD
2515
2516BOOT:
2517{
2518 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2519 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2520}
2521
2522void
2523DESTROY (SV *self)
2524 CODE:
2525{
2526 aio_wd wd = SvAIO_WD (self);
2527#if HAVE_AT
2528 {
2529 SV *callback = &PL_sv_undef;
2530 dREQ; /* clobbers next_pri :/ */
2531 next_pri = req->pri; /* restore next_pri */
2532 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2533 req->type = EIO_WD_CLOSE;
2534 req->wd = wd;
2535 REQ_SEND;
2536 }
2537#else
2538 eio_wd_close_sync (wd);
2539#endif
2540}
2541
1324MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2542MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325 2543
1326void 2544void
1327cancel (aio_req_ornot req) 2545cancel (aio_req_ornot req)
1328 PROTOTYPE:
1329 CODE: 2546 CODE:
1330 req_cancel (req); 2547 eio_cancel (req);
1331 2548
1332void 2549void
1333cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2550cb (aio_req_ornot req, SV *callback = NO_INIT)
1334 CODE: 2551 PPCODE:
2552{
2553 if (GIMME_V != G_VOID)
2554 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2555
2556 if (items > 1)
2557 {
2558 SV *cb_cv = get_cb (callback);
2559
1335 SvREFCNT_dec (req->callback); 2560 SvREFCNT_dec (req->callback);
1336 req->callback = newSVsv (callback); 2561 req->callback = SvREFCNT_inc (cb_cv);
2562 }
2563}
1337 2564
1338MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2565MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1339 2566
1340void 2567void
1341add (aio_req grp, ...) 2568add (aio_req grp, ...)
1342 PPCODE: 2569 PPCODE:
1343{ 2570{
1344 int i; 2571 int i;
1345 aio_req req;
1346 2572
1347 if (grp->fd == 2) 2573 if (grp->int1 == 2)
1348 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2574 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1349 2575
1350 for (i = 1; i < items; ++i ) 2576 for (i = 1; i < items; ++i )
1351 { 2577 {
2578 aio_req req;
2579
1352 if (GIMME_V != G_VOID) 2580 if (GIMME_V != G_VOID)
1353 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2581 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1354 2582
1355 req = SvAIO_REQ (ST (i)); 2583 req = SvAIO_REQ (ST (i));
1356 2584
1357 if (req) 2585 if (req)
1358 { 2586 eio_grp_add (grp, req);
1359 ++grp->length;
1360 req->grp = grp;
1361
1362 req->grp_prev = 0;
1363 req->grp_next = grp->grp_first;
1364
1365 if (grp->grp_first)
1366 grp->grp_first->grp_prev = req;
1367
1368 grp->grp_first = req;
1369 }
1370 } 2587 }
1371} 2588}
2589
2590void
2591cancel_subs (aio_req_ornot req)
2592 CODE:
2593 req_cancel_subs (req);
1372 2594
1373void 2595void
1374result (aio_req grp, ...) 2596result (aio_req grp, ...)
1375 CODE: 2597 CODE:
1376{ 2598{
1377 int i; 2599 int i;
2600 AV *av;
2601
2602 grp->errorno = errno;
2603
1378 AV *av = newAV (); 2604 av = newAV ();
2605 av_extend (av, items - 1);
1379 2606
1380 for (i = 1; i < items; ++i ) 2607 for (i = 1; i < items; ++i )
1381 av_push (av, newSVsv (ST (i))); 2608 av_push (av, newSVsv (ST (i)));
1382 2609
1383 SvREFCNT_dec (grp->data); 2610 SvREFCNT_dec (grp->sv1);
1384 grp->data = (SV *)av; 2611 grp->sv1 = (SV *)av;
1385} 2612}
1386 2613
1387void 2614void
2615errno (aio_req grp, int errorno = errno)
2616 CODE:
2617 grp->errorno = errorno;
2618
2619void
1388feed_limit (aio_req grp, int limit) 2620limit (aio_req grp, int limit)
1389 CODE: 2621 CODE:
1390 grp->fd2 = limit; 2622 eio_grp_limit (grp, limit);
1391 aio_grp_feed (grp);
1392 2623
1393void 2624void
1394feed (aio_req grp, SV *callback=&PL_sv_undef) 2625feed (aio_req grp, SV *callback = &PL_sv_undef)
1395 CODE: 2626 CODE:
1396{ 2627{
1397 SvREFCNT_dec (grp->fh2); 2628 SvREFCNT_dec (grp->sv2);
1398 grp->fh2 = newSVsv (callback); 2629 grp->sv2 = newSVsv (callback);
2630 grp->feed = aio_grp_feed;
1399 2631
1400 if (grp->fd2 <= 0) 2632 if (grp->int2 <= 0)
1401 grp->fd2 = 2; 2633 grp->int2 = 2;
1402 2634
1403 aio_grp_feed (grp); 2635 eio_grp_limit (grp, grp->int2);
1404} 2636}
1405 2637

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