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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC vs.
Revision 1.257 by root, Tue Jul 17 23:20:09 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
10#include <pthread.h>
11
12#include <stddef.h> 9#include <stddef.h>
10#include <stdlib.h>
13#include <errno.h> 11#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 12#include <sys/types.h>
17#include <sys/stat.h> 13#include <sys/stat.h>
18#include <limits.h> 14#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 15#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 16#include <sched.h>
23 17
24#if HAVE_SENDFILE 18#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> 19# include <sys/mman.h>
30# elif __hpux 20#endif
21
22/* the incompetent fool that created musl keeps __linux__, refuses
23 * to implement any linux standard apis, and also has no way to test
24 * for his broken iplementation. don't complain to me if this fails
25 * for you.
26 */
27#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
28# include <linux/fs.h>
29# ifdef FS_IOC_FIEMAP
30# include <linux/types.h>
31# include <linux/fiemap.h>
32# define HAVE_FIEMAP 1
33# endif
34#endif
35
36/* perl namespace pollution */
37#undef VERSION
38
39/* perl stupidly overrides readdir and maybe others */
40/* with thread-unsafe versions, imagine that :( */
41#undef readdir
42#undef opendir
43#undef closedir
44
45#ifdef _WIN32
46
47 // perl overrides all those nice libc functions
48
49 #undef malloc
50 #undef free
51 #undef open
52 #undef read
53 #undef write
54 #undef send
55 #undef recv
56 #undef stat
57 #undef lstat
58 #undef fstat
59 #undef truncate
60 #undef ftruncate
61 #undef open
62 #undef link
63 #undef close
64 #undef unlink
65 #undef mkdir
66 #undef rmdir
67 #undef rename
68 #undef lseek
69 #undef opendir
70 #undef readdir
71 #undef closedir
72 #undef chmod
73 #undef fchmod
74 #undef dup
75 #undef dup2
76 #undef abort
77 #undef pipe
78
79 #define EIO_STRUCT_STAT struct _stati64
80 #define EIO_STRUCT_STATI64
81
82#else
83
31# include <sys/socket.h> 84 #include <sys/time.h>
32# elif __solaris /* not yet */
33# include <sys/sendfile.h> 85 #include <sys/select.h>
86 #include <unistd.h>
87 #include <utime.h>
88 #include <signal.h>
89
90 #define EIO_STRUCT_STAT Stat_t
91
92#endif
93
94/*****************************************************************************/
95
96#if __GNUC__ >= 3
97# define expect(expr,value) __builtin_expect ((expr),(value))
98#else
99# define expect(expr,value) (expr)
100#endif
101
102#define expect_false(expr) expect ((expr) != 0, 0)
103#define expect_true(expr) expect ((expr) != 0, 1)
104
105/*****************************************************************************/
106
107#include "libeio/config.h"
108
109#include "schmorp.h"
110
111#if HAVE_EVENTFD
112# include <sys/eventfd.h>
113#endif
114
115#if HAVE_TIMERFD
116# include <sys/timerfd.h>
117#endif
118
119#if HAVE_RLIMITS
120 #include <sys/time.h>
121 #include <sys/resource.h>
122#endif
123
124typedef SV SV8; /* byte-sv, used for argument-checking */
125typedef int aio_rfd; /* read file desriptor */
126typedef int aio_wfd; /* write file descriptor */
127
128static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
129
130#define EIO_REQ_MEMBERS \
131 SV *callback; \
132 SV *sv1, *sv2; \
133 SV *sv3, *sv4; \
134 STRLEN stroffset; \
135 SV *self;
136
137#define EIO_NO_WRAPPERS 1
138
139#include "libeio/eio.h"
140
141static int req_invoke (eio_req *req);
142#define EIO_FINISH(req) req_invoke (req)
143static void req_destroy (eio_req *grp);
144#define EIO_DESTROY(req) req_destroy (req)
145
146#include "libeio/eio.c"
147
148#if !HAVE_POSIX_FADVISE
149# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
150#endif
151
152#if !HAVE_POSIX_MADVISE
153# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
154#endif
155
156#ifndef MAP_ANONYMOUS
157# ifdef MAP_ANON
158# define MAP_ANONYMOUS MAP_ANON
34# else 159# else
35# error sendfile support requested but not available 160# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 161# endif
37#endif 162#endif
38 163
39/* used for struct dirent, AIX doesn't provide it */ 164/* defines all sorts of constants to 0 unless they are already defined */
40#ifndef NAME_MAX 165/* also provides const_iv_ and const_niv_ macros for them */
41# define NAME_MAX 4096 166#include "def0.h"
42#endif
43 167
44#if __ia64 168#ifndef makedev
45# define STACKSIZE 65536 169# define makedev(maj,min) (((maj) << 8) | (min))
170#endif
171#ifndef major
172# define major(dev) ((dev) >> 8)
173#endif
174#ifndef minor
175# define minor(dev) ((dev) & 0xff)
176#endif
177
178#if PAGESIZE <= 0
179# define PAGESIZE sysconf (_SC_PAGESIZE)
180#endif
181
182/*****************************************************************************/
183
184#if !_POSIX_MAPPED_FILES
185# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
186# define munmap(addr,length) EIO_ENOSYS ()
187#endif
188
189#if !_POSIX_MEMORY_PROTECTION
190# define mprotect(addr,len,prot) EIO_ENOSYS ()
191#endif
192
193#if !MREMAP_MAYMOVE
194# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
195#endif
196
197#define FOREIGN_MAGIC PERL_MAGIC_ext
198
199static int ecb_cold
200mmap_free (pTHX_ SV *sv, MAGIC *mg)
201{
202 int old_errno = errno;
203 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
204 errno = old_errno;
205
206 mg->mg_obj = 0; /* just in case */
207
208 SvREADONLY_off (sv);
209
210 if (SvPVX (sv) != mg->mg_ptr)
211 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
212
213 SvCUR_set (sv, 0);
214 SvPVX (sv) = 0;
215 SvOK_off (sv);
216
217 return 0;
218}
219
220static MGVTBL mmap_vtbl = {
221 0, 0, 0, 0, mmap_free
222};
223
224static int ecb_cold
225sysfree_free (pTHX_ SV *sv, MAGIC *mg)
226{
227 free (mg->mg_ptr);
228 mg->mg_obj = 0; /* just in case */
229
230 SvREADONLY_off (sv);
231
232 if (SvPVX (sv) != mg->mg_ptr)
233 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
234
235 SvCUR_set (sv, 0);
236 SvPVX (sv) = 0;
237 SvOK_off (sv);
238
239 return 0;
240}
241
242static MGVTBL sysfree_vtbl = {
243 0, 0, 0, 0, sysfree_free
244};
245
246/*****************************************************************************/
247
248/* helper: set scalar to foreign ptr with custom free */
249static void
250sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
251{
252 sv_force_normal (sv);
253
254 /* we store the length in mg_obj, as namlen is I32 :/ */
255 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
256 ->mg_obj = (SV *)length;
257
258 SvUPGRADE (sv, SVt_PV); /* nop... */
259
260 if (SvLEN (sv))
261 Safefree (SvPVX (sv));
262
263 SvPVX (sv) = (char *)addr;
264 SvCUR_set (sv, length);
265 SvLEN_set (sv, 0);
266 SvPOK_only (sv);
267}
268
269static void
270sv_clear_foreign (SV *sv)
271{
272 /* todo: iterate over magic and only free ours, but of course */
273 /* the perl5porters will call that (correct) behaviour buggy */
274 sv_unmagic (sv, FOREIGN_MAGIC);
275}
276
277/*****************************************************************************/
278
279static void
280fiemap (eio_req *req)
281{
282 req->result = -1;
283
284#if HAVE_FIEMAP
285 /* assume some c99 */
286 struct fiemap *fiemap = 0;
287 size_t end_offset;
288 int count = req->int3;
289
290 req->flags |= EIO_FLAG_PTR1_FREE;
291
292 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
293 /* increase in 3.5kb steps */
294 if (count < 0)
295 count = 8;
296
297 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
298 errno = ENOMEM;
299 if (!fiemap)
300 return;
301
302 req->ptr1 = fiemap;
303
304 fiemap->fm_start = req->offs;
305 fiemap->fm_length = req->size;
306 fiemap->fm_flags = req->int2;
307 fiemap->fm_extent_count = count;
308
309 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
310 return;
311
312 if (req->int3 >= 0 /* not autosizing */
313 || !fiemap->fm_mapped_extents /* no more extents */
314 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
315 goto done;
316
317 /* else we have to loop -
318 * it would be tempting (actually I tried that first) to just query the
319 * number of extents needed, but linux often feels like not returning all
320 * extents, without telling us it left any out. this complicates
321 * this quite a bit.
322 */
323
324 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
325
326 for (;;)
327 {
328 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
329 char scratch[3072];
330 struct fiemap *incmap = (struct fiemap *)scratch;
331
332 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
333 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
334 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
335 incmap->fm_flags = fiemap->fm_flags;
336 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
337
338 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
339 return;
340
341 if (!incmap->fm_mapped_extents)
342 goto done;
343
344 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
345 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
346 errno = ENOMEM;
347 if (!fiemap)
348 return;
349
350 req->ptr1 = fiemap;
351
352 for (count = 0; count < incmap->fm_mapped_extents; ++count)
353 {
354 struct fiemap_extent *e = incmap->fm_extents + count;
355
356 if (e->fe_logical + e->fe_length >= end_offset)
357 goto done;
358
359 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
360
361 if (e->fe_flags & FIEMAP_EXTENT_LAST)
362 goto done;
363
364 }
365 }
366
367done:
368 req->result = 0;
369
46#else 370#else
47# define STACKSIZE 8192 371 errno = ENOSYS;
48#endif 372#endif
373}
374
375/*****************************************************************************/
49 376
50enum { 377enum {
51 REQ_QUIT, 378 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}; 379};
63 380
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; 381typedef eio_req *aio_req;
97typedef aio_cb *aio_req_ornot; 382typedef eio_req *aio_req_ornot;
383typedef eio_wd aio_wd;
98 384
99enum { 385static SV *on_next_submit;
100 PRI_MIN = -4, 386static 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; 387static int max_outstanding;
112static int respipe [2];
113 388
114static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 389static s_epipe respipe;
115static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117 390
118static volatile aio_req reqs, reqe; /* queue start, queue end */ 391static void req_destroy (aio_req req);
119static volatile aio_req ress, rese; /* queue start, queue end */
120
121static void req_invoke (aio_req req); 392static void req_cancel (aio_req req);
122static void req_free (aio_req req); 393
394static void
395want_poll (void)
396{
397 /* write a dummy byte to the pipe so fh becomes ready */
398 s_epipe_signal (&respipe);
399}
400
401static void
402done_poll (void)
403{
404 /* read any signals sent by the worker threads */
405 s_epipe_drain (&respipe);
406}
123 407
124/* must be called at most once */ 408/* must be called at most once */
125static SV *req_sv (aio_req req, const char *klass) 409static SV *
410req_sv (aio_req req, HV *stash)
126{ 411{
127 if (!req->self) 412 if (!req->self)
128 { 413 {
129 req->self = (SV *)newHV (); 414 req->self = (SV *)newHV ();
130 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 415 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
131 } 416 }
132 417
133 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 418 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
134} 419}
135 420
136static aio_req SvAIO_REQ (SV *sv) 421static SV *
422newSVaio_wd (aio_wd wd)
423{
424 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
425}
426
427static aio_req
428SvAIO_REQ (SV *sv)
137{ 429{
138 MAGIC *mg; 430 MAGIC *mg;
139 431
140 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 432 if (!SvROK (sv)
433 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
434 || (SvSTASH (SvRV (sv)) != aio_grp_stash
435 && SvSTASH (SvRV (sv)) != aio_req_stash
436 && !sv_derived_from (sv, "IO::AIO::REQ")))
141 croak ("object of class " AIO_REQ_KLASS " expected"); 437 croak ("object of class IO::AIO::REQ expected");
142 438
143 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 439 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
144 440
145 return mg ? (aio_req)mg->mg_ptr : 0; 441 return mg ? (aio_req)mg->mg_ptr : 0;
146} 442}
147 443
444static aio_wd
445SvAIO_WD (SV *sv)
446{
447 if (!SvROK (sv)
448 || SvTYPE (SvRV (sv)) != SVt_PVMG
449 || SvSTASH (SvRV (sv)) != aio_wd_stash)
450 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
451
452 return (aio_wd)(long)SvIVX (SvRV (sv));
453}
454
455static SV *
456newmortalFH (int fd, int flags)
457{
458 if (fd < 0)
459 return &PL_sv_undef;
460
461 GV *gv = (GV *)sv_newmortal ();
462 char sym[64];
463 int symlen;
464
465 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
466 gv_init (gv, aio_stash, sym, symlen, 0);
467
468 symlen = snprintf (
469 sym,
470 sizeof (sym),
471 "%s&=%d",
472 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
473 fd
474 );
475
476 return do_open (gv, sym, symlen, 0, 0, 0, 0)
477 ? (SV *)gv : &PL_sv_undef;
478}
479
480static void
148static void aio_grp_feed (aio_req grp) 481aio_grp_feed (aio_req grp)
149{ 482{
150 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 483 if (grp->sv2 && SvOK (grp->sv2))
151 { 484 {
152 int old_len = grp->length; 485 dSP;
153 486
154 if (grp->fh2 && SvOK (grp->fh2)) 487 ENTER;
488 SAVETMPS;
489 PUSHMARK (SP);
490 XPUSHs (req_sv (grp, aio_grp_stash));
491 PUTBACK;
492 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
493 SPAGAIN;
494 FREETMPS;
495 LEAVE;
496 }
497}
498
499static void
500req_submit (eio_req *req)
501{
502 eio_submit (req);
503
504 if (expect_false (on_next_submit))
505 {
506 dSP;
507 SV *cb = sv_2mortal (on_next_submit);
508
509 on_next_submit = 0;
510
511 PUSHMARK (SP);
512 PUTBACK;
513 call_sv (cb, G_DISCARD | G_EVAL);
514 }
515}
516
517static int
518req_invoke (eio_req *req)
519{
520 if (req->flags & FLAG_SV2_RO_OFF)
521 SvREADONLY_off (req->sv2);
522
523 if (!EIO_CANCELLED (req) && req->callback)
524 {
525 dSP;
526 static SV *sv_result_cache; /* caches the result integer SV */
527 SV *sv_result;
528
529 ENTER;
530 SAVETMPS;
531 PUSHMARK (SP);
532 EXTEND (SP, 1);
533
534 /* do not recreate the result IV from scratch each time */
535 if (expect_true (sv_result_cache))
155 { 536 {
156 dSP; 537 sv_result = sv_result_cache; sv_result_cache = 0;
157 538 SvIV_set (sv_result, req->result);
158 ENTER; 539 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 } 540 }
168 541 else
169 /* stop if no progress has been made */
170 if (old_len == grp->length)
171 { 542 {
172 SvREFCNT_dec (grp->fh2); 543 sv_result = newSViv (req->result);
173 grp->fh2 = 0; 544 SvREADONLY_on (sv_result);
174 break;
175 } 545 }
546
547 switch (req->type)
548 {
549 case EIO_WD_OPEN:
550 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
551 break;
552
553 case EIO_READDIR:
554 {
555 SV *rv = &PL_sv_undef;
556
557 if (req->result >= 0)
558 {
559 int i;
560 char *names = (char *)req->ptr2;
561 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
562 AV *av = newAV ();
563
564 av_extend (av, req->result - 1);
565
566 for (i = 0; i < req->result; ++i)
567 {
568 if (req->int1 & EIO_READDIR_DENTS)
569 {
570 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
571
572 if (req->int1 & EIO_READDIR_CUSTOM2)
573 {
574 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
575 AV *avent = newAV ();
576
577 av_extend (avent, 2);
578
579 if (!sv_type [ent->type])
580 {
581 sv_type [ent->type] = newSViv (ent->type);
582 SvREADONLY_on (sv_type [ent->type]);
583 }
584
585 av_store (avent, 0, namesv);
586 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
587 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
588
589 av_store (av, i, newRV_noinc ((SV *)avent));
590 }
591 else
592 av_store (av, i, namesv);
593
594 ++ent;
595 }
596 else
597 {
598 SV *name = newSVpv (names, 0);
599 av_store (av, i, name);
600 names += SvCUR (name) + 1;
601 }
602 }
603
604 rv = sv_2mortal (newRV_noinc ((SV *)av));
605 }
606
607 PUSHs (rv);
608
609 if (req->int1 & EIO_READDIR_CUSTOM1)
610 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
611 }
612 break;
613
614 case EIO_OPEN:
615 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
616 break;
617
618 case EIO_STATVFS:
619 case EIO_FSTATVFS:
620 {
621 SV *rv = &PL_sv_undef;
622
623#ifndef _WIN32
624 if (req->result >= 0)
625 {
626 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
627 HV *hv = newHV ();
628 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
629 * chooses to make it a struct.
630 */
631 unsigned long fsid = 0;
632 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
633
634 rv = sv_2mortal (newRV_noinc ((SV *)hv));
635
636 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
637 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
638 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
639 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
640 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
641 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
642 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
643 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
644 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
645 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
646 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
647 }
648#endif
649
650 PUSHs (rv);
651 }
652
653 break;
654
655 case EIO_GROUP:
656 req->int1 = 2; /* mark group as finished */
657
658 if (req->sv1)
659 {
660 int i;
661 AV *av = (AV *)req->sv1;
662
663 EXTEND (SP, AvFILL (av) + 1);
664 for (i = 0; i <= AvFILL (av); ++i)
665 PUSHs (*av_fetch (av, i, 0));
666 }
667 break;
668
669 case EIO_NOP:
670 case EIO_BUSY:
671 break;
672
673 case EIO_READLINK:
674 case EIO_REALPATH:
675 if (req->result > 0)
676 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
677 break;
678
679 case EIO_STAT:
680 case EIO_LSTAT:
681 case EIO_FSTAT:
682 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
683
684 if (!(PL_laststatval = req->result))
685 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
686 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
687
688 PUSHs (sv_result);
689 break;
690
691 case EIO_SEEK:
692 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
693 break;
694
695 case EIO_READ:
696 {
697 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
698 *SvEND (req->sv2) = 0;
699 SvPOK_only (req->sv2);
700 SvSETMAGIC (req->sv2);
701 PUSHs (sv_result);
702 }
703 break;
704
705 case EIO_SLURP:
706 {
707 if (req->result >= 0)
708 {
709 /* if length was originally not known, we steal the malloc'ed memory */
710 if (req->flags & EIO_FLAG_PTR2_FREE)
711 {
712 req->flags &= ~EIO_FLAG_PTR2_FREE;
713 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
714 }
715 else
716 {
717 SvCUR_set (req->sv2, req->result);
718 *SvEND (req->sv2) = 0;
719 SvPOK_only (req->sv2);
720 }
721
722 SvSETMAGIC (req->sv2);
723 }
724
725 PUSHs (sv_result);
726 }
727 break;
728
729 case EIO_CUSTOM:
730 if (req->feed == fiemap)
731 {
732#if HAVE_FIEMAP
733 if (!req->result)
734 {
735 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
736
737 if (fiemap->fm_extent_count)
738 {
739 AV *av = newAV ();
740 int i;
741
742 while (fiemap->fm_mapped_extents)
743 {
744 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
745 AV *ext_av = newAV ();
746
747 av_store (ext_av, 3, newSVuv (extent->fe_flags));
748 av_store (ext_av, 2, newSVval64 (extent->fe_length));
749 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
750 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
751
752 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
753 }
754
755 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
756 }
757 else
758 {
759 SvIV_set (sv_result, fiemap->fm_mapped_extents);
760 PUSHs (sv_result);
761 }
762 }
763#endif
764 }
765 else
766 PUSHs (sv_result);
767 break;
768
769 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
770 if (req->result > 0)
771 SvIV_set (sv_result, 0);
772 /* FALLTHROUGH */
773
774 default:
775 PUSHs (sv_result);
776 break;
777 }
778
779 errno = req->errorno;
780
781 PUTBACK;
782 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
783 SPAGAIN;
784
785 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
786 SvREFCNT_dec (sv_result);
787 else
788 sv_result_cache = sv_result;
789
790 FREETMPS;
791 LEAVE;
792
793 PUTBACK;
176 } 794 }
177}
178 795
179static void aio_grp_dec (aio_req grp) 796 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} 797}
193 798
194static void poll_wait () 799static void
800req_destroy (aio_req req)
195{ 801{
196 fd_set rfd;
197
198 while (nreqs)
199 {
200 aio_req req;
201 pthread_mutex_lock (&reslock);
202 req = ress;
203 pthread_mutex_unlock (&reslock);
204
205 if (req)
206 return;
207
208 FD_ZERO(&rfd);
209 FD_SET(respipe [0], &rfd);
210
211 select (respipe [0] + 1, &rfd, 0, 0, 0);
212 }
213}
214
215static void req_invoke (aio_req req)
216{
217 dSP;
218 int errorno = errno;
219
220 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
221 return;
222
223 errno = req->errorno;
224
225 ENTER;
226 SAVETMPS;
227 PUSHMARK (SP);
228 EXTEND (SP, 1);
229
230 switch (req->type)
231 {
232 case REQ_READDIR:
233 {
234 SV *rv = &PL_sv_undef;
235
236 if (req->result >= 0)
237 {
238 char *buf = req->data2ptr;
239 AV *av = newAV ();
240
241 while (req->result)
242 {
243 SV *sv = newSVpv (buf, 0);
244
245 av_push (av, sv);
246 buf += SvCUR (sv) + 1;
247 req->result--;
248 }
249
250 rv = sv_2mortal (newRV_noinc ((SV *)av));
251 }
252
253 PUSHs (rv);
254 }
255 break;
256
257 case REQ_OPEN:
258 {
259 /* convert fd to fh */
260 SV *fh;
261
262 PUSHs (sv_2mortal (newSViv (req->result)));
263 PUTBACK;
264 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
265 SPAGAIN;
266
267 fh = SvREFCNT_inc (POPs);
268
269 PUSHMARK (SP);
270 XPUSHs (sv_2mortal (fh));
271 }
272 break;
273
274 case REQ_GROUP:
275 req->fd = 2; /* mark group as finished */
276
277 if (req->data)
278 {
279 int i;
280 AV *av = (AV *)req->data;
281
282 EXTEND (SP, AvFILL (av) + 1);
283 for (i = 0; i <= AvFILL (av); ++i)
284 PUSHs (*av_fetch (av, i, 0));
285 }
286 break;
287
288 case REQ_NOP:
289 case REQ_SLEEP:
290 break;
291
292 default:
293 PUSHs (sv_2mortal (newSViv (req->result)));
294 break;
295 }
296
297
298 PUTBACK;
299 call_sv (req->callback, G_VOID | G_EVAL);
300 SPAGAIN;
301
302 FREETMPS;
303 LEAVE;
304
305 errno = errorno;
306
307 if (SvTRUE (ERRSV))
308 {
309 req_free (req);
310 croak (0);
311 }
312}
313
314static void req_free (aio_req req)
315{
316 if (req->grp)
317 {
318 aio_req grp = req->grp;
319
320 /* unlink request */
321 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
322 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
323
324 if (grp->grp_first == req)
325 grp->grp_first = req->grp_next;
326
327 aio_grp_dec (grp);
328 }
329
330 if (req->self) 802 if (req->self)
331 { 803 {
332 sv_unmagic (req->self, PERL_MAGIC_ext); 804 sv_unmagic (req->self, PERL_MAGIC_ext);
333 SvREFCNT_dec (req->self); 805 SvREFCNT_dec (req->self);
334 } 806 }
335 807
336 SvREFCNT_dec (req->data);
337 SvREFCNT_dec (req->fh); 808 SvREFCNT_dec (req->sv1);
338 SvREFCNT_dec (req->fh2); 809 SvREFCNT_dec (req->sv2);
810 SvREFCNT_dec (req->sv3);
811 SvREFCNT_dec (req->sv4);
339 SvREFCNT_dec (req->callback); 812 SvREFCNT_dec (req->callback);
340 Safefree (req->statdata);
341 813
342 if (req->type == REQ_READDIR && req->result >= 0)
343 free (req->data2ptr);
344
345 Safefree (req); 814 free (req);
346} 815}
347 816
348static void req_cancel (aio_req req) 817static void
818req_cancel_subs (aio_req grp)
349{ 819{
350 req->flags |= FLAG_CANCELLED;
351
352 if (req->type == REQ_GROUP) 820 if (grp->type != EIO_GROUP)
821 return;
822
823 SvREFCNT_dec (grp->sv2);
824 grp->sv2 = 0;
825
826 eio_grp_cancel (grp);
827}
828
829static void ecb_cold
830create_respipe (void)
831{
832 if (s_epipe_renew (&respipe))
833 croak ("IO::AIO: unable to initialize result pipe");
834}
835
836static void
837poll_wait (void)
838{
839 while (eio_nreqs ())
353 { 840 {
354 aio_req sub; 841 int size;
355 842
356 for (sub = req->grp_first; sub; sub = sub->grp_next) 843 X_LOCK (EIO_POOL->reslock);
357 req_cancel (sub); 844 size = EIO_POOL->res_queue.size;
845 X_UNLOCK (EIO_POOL->reslock);
846
847 if (size)
848 return;
849
850 etp_maybe_start_thread (EIO_POOL);
851
852 s_epipe_wait (&respipe);
358 } 853 }
359} 854}
360 855
361static int poll_cb () 856static int
857poll_cb (void)
362{ 858{
363 dSP;
364 int count = 0;
365 int do_croak = 0;
366 aio_req req;
367
368 for (;;) 859 for (;;)
369 { 860 {
370 pthread_mutex_lock (&reslock); 861 int res = eio_poll ();
371 req = ress;
372 862
373 if (req) 863 if (res > 0)
864 croak (0);
865
866 if (!max_outstanding || max_outstanding > eio_nreqs ())
867 return res;
868
869 poll_wait ();
870 }
871}
872
873static void ecb_cold
874reinit (void)
875{
876 create_respipe ();
877
878 if (eio_init (want_poll, done_poll) < 0)
879 croak ("IO::AIO: unable to initialise eio library");
880}
881
882/*****************************************************************************/
883
884static SV *
885get_cb (SV *cb_sv)
886{
887 SvGETMAGIC (cb_sv);
888 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
889}
890
891static aio_req ecb_noinline
892dreq (SV *callback)
893{
894 SV *cb_cv;
895 aio_req req;
896 int req_pri = next_pri;
897 next_pri = EIO_PRI_DEFAULT;
898
899 cb_cv = get_cb (callback);
900
901 req = calloc (sizeof (*req), 1);
902 if (!req)
903 croak ("out of memory during eio_req allocation");
904
905 req->callback = SvREFCNT_inc (cb_cv);
906 req->pri = req_pri;
907
908 return req;
909}
910
911#define dREQ \
912 aio_req req = dreq (callback); \
913
914#define REQ_SEND \
915 PUTBACK; \
916 req_submit (req); \
917 SPAGAIN; \
918 \
919 if (GIMME_V != G_VOID) \
920 XPUSHs (req_sv (req, aio_req_stash));
921
922ecb_inline void
923req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
924{
925 if (expect_false (SvROK (path)))
926 {
927 SV *rv = SvRV (path);
928 SV *wdob;
929
930 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
374 { 931 {
375 ress = req->next; 932 path = AvARRAY (rv)[1];
933 wdob = AvARRAY (rv)[0];
376 934
377 if (!ress) 935 if (SvOK (wdob))
378 { 936 {
379 /* read any signals sent by the worker threads */ 937 *wd = SvAIO_WD (wdob);
380 char buf [32]; 938 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
381 while (read (respipe [0], buf, 32) == 32)
382 ;
383
384 rese = 0;
385 } 939 }
940 else
941 *wd = EIO_INVALID_WD;
386 } 942 }
387 943 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
388 pthread_mutex_unlock (&reslock);
389
390 if (!req)
391 break;
392
393 --nreqs;
394
395 if (req->type == REQ_QUIT)
396 started--;
397 else if (req->type == REQ_GROUP && req->length)
398 { 944 {
399 req->fd = 1; /* mark request as delayed */ 945 *wd = (aio_wd)(long)SvIVX (rv);
400 continue; 946 *wdsv = SvREFCNT_inc_NN (rv);
947 *ptr = ".";
948 return; /* path set to "." */
401 } 949 }
402 else 950 else
403 { 951 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
404 if (req->type == REQ_READ)
405 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
406
407 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
408 SvREADONLY_off (req->data);
409
410 if (req->statdata)
411 {
412 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
413 PL_laststatval = req->result;
414 PL_statcache = *(req->statdata);
415 }
416
417 req_invoke (req);
418
419 count++;
420 }
421
422 req_free (req);
423 } 952 }
424 953
425 return count; 954 *pathsv = newSVsv (path);
955 *ptr = SvPVbyte_nolen (*pathsv);
426} 956}
427 957
428static void *aio_proc(void *arg); 958static void ecb_noinline
429 959req_set_path1 (aio_req req, SV *path)
430static void start_thread (void)
431{ 960{
432 sigset_t fullsigset, oldsigset; 961 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
433 pthread_t tid;
434 pthread_attr_t attr;
435
436 pthread_attr_init (&attr);
437 pthread_attr_setstacksize (&attr, STACKSIZE);
438 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
439
440 sigfillset (&fullsigset);
441 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
442
443 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
444 started++;
445
446 sigprocmask (SIG_SETMASK, &oldsigset, 0);
447} 962}
448 963
449static void req_send (aio_req req) 964static void ecb_noinline
965req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
450{ 966{
451 while (started < wanted && nreqs >= started) 967 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
452 start_thread ();
453 968
454 ++nreqs; 969 switch (SvTYPE (rv))
455
456 pthread_mutex_lock (&reqlock);
457
458 req->next = 0;
459
460 if (reqe)
461 { 970 {
462 reqe->next = req; 971 case SVt_PVIO:
463 reqe = req; 972 case SVt_PVLV:
973 case SVt_PVGV:
974 req->type = type_fh;
975 req->sv1 = newSVsv (fh_or_path);
976 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977 break;
978
979 default:
980 req->type = type_path;
981 req_set_path1 (req, fh_or_path);
982 break;
464 } 983 }
465 else
466 reqe = reqs = req;
467
468 pthread_cond_signal (&reqwait);
469 pthread_mutex_unlock (&reqlock);
470
471 if (nreqs > max_outstanding)
472 for (;;)
473 {
474 poll_cb ();
475
476 if (nreqs <= max_outstanding)
477 break;
478
479 poll_wait ();
480 }
481}
482
483static void end_thread (void)
484{
485 aio_req req;
486 Newz (0, req, 1, aio_cb);
487 req->type = REQ_QUIT;
488
489 req_send (req);
490}
491
492static void min_parallel (int nthreads)
493{
494 if (wanted < nthreads)
495 wanted = nthreads;
496}
497
498static void max_parallel (int nthreads)
499{
500 int cur = started;
501
502 if (wanted > nthreads)
503 wanted = nthreads;
504
505 while (cur > wanted)
506 {
507 end_thread ();
508 cur--;
509 }
510
511 while (started > wanted)
512 {
513 poll_wait ();
514 poll_cb ();
515 }
516}
517
518static void create_pipe ()
519{
520 if (pipe (respipe))
521 croak ("unable to initialize result pipe");
522
523 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
524 croak ("cannot set result pipe to nonblocking mode");
525
526 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
527 croak ("cannot set result pipe to nonblocking mode");
528} 984}
529 985
530/*****************************************************************************/ 986/*****************************************************************************/
531/* work around various missing functions */
532 987
533#if !HAVE_PREADWRITE 988static void
534# define pread aio_pread 989ts_set (struct timespec *ts, NV value)
535# define pwrite aio_pwrite
536
537/*
538 * make our pread/pwrite safe against themselves, but not against
539 * normal read/write by using a mutex. slows down execution a lot,
540 * but that's your problem, not mine.
541 */
542static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
543
544static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
545{ 990{
546 ssize_t res; 991 ts->tv_sec = value;
547 off_t ooffset; 992 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
548
549 pthread_mutex_lock (&preadwritelock);
550 ooffset = lseek (fd, 0, SEEK_CUR);
551 lseek (fd, offset, SEEK_SET);
552 res = read (fd, buf, count);
553 lseek (fd, ooffset, SEEK_SET);
554 pthread_mutex_unlock (&preadwritelock);
555
556 return res;
557} 993}
558 994
559static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 995static NV
996ts_get (const struct timespec *ts)
560{ 997{
561 ssize_t res; 998 return ts->tv_sec + ts->tv_nsec * 1e-9;
562 off_t ooffset;
563
564 pthread_mutex_lock (&preadwritelock);
565 ooffset = lseek (fd, 0, SEEK_CUR);
566 lseek (fd, offset, SEEK_SET);
567 res = write (fd, buf, count);
568 lseek (fd, offset, SEEK_SET);
569 pthread_mutex_unlock (&preadwritelock);
570
571 return res;
572} 999}
573#endif
574 1000
575#if !HAVE_FDATASYNC 1001/*****************************************************************************/
576# define fdatasync fsync
577#endif
578 1002
579#if !HAVE_READAHEAD 1003XS(boot_IO__AIO) ecb_cold;
580# define readahead aio_readahead
581 1004
582static ssize_t readahead (int fd, off_t offset, size_t count) 1005MODULE = IO::AIO PACKAGE = IO::AIO
583{
584 char readahead_buf[4096];
585 1006
586 while (count > 0) 1007PROTOTYPES: ENABLE
587 {
588 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
589 1008
590 pread (fd, readahead_buf, len, offset); 1009BOOT:
591 offset += len;
592 count -= len;
593 }
594
595 errno = 0;
596}
597#endif
598
599#if !HAVE_READDIR_R
600# define readdir_r aio_readdir_r
601
602static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
603
604static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
605{ 1010{
606 struct dirent *e; 1011 static const struct {
607 int errorno; 1012 const char *name;
1013 IV iv;
1014 } *civ, const_iv[] = {
1015# define const_niv(name, value) { # name, (IV) value },
1016# define const_iv(name) { # name, (IV) name },
1017# define const_eio(name) { # name, (IV) EIO_ ## name },
608 1018
609 pthread_mutex_lock (&readdirlock); 1019 /* you have to re-run ./gendef0 after adding/removing any constants here */
1020 /* the first block can be undef if missing */
1021 const_iv (ENOSYS)
1022 const_iv (EXDEV)
1023 const_iv (EBADR)
610 1024
611 e = readdir (dirp); 1025 /* for lseek */
612 errorno = errno; 1026 const_iv (SEEK_DATA)
1027 const_iv (SEEK_HOLE)
613 1028
614 if (e) 1029 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
615 { 1030 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
616 *res = ent; 1031 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
617 strcpy (ent->d_name, e->d_name); 1032 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
618 } 1033 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
619 else 1034 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
620 *res = 0;
621 1035
622 pthread_mutex_unlock (&readdirlock); 1036 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1037 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1038 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1039 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1040 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
623 1041
624 errno = errorno; 1042 /* the second block will be 0 when missing */
625 return e ? 0 : -1; 1043 const_iv (O_RDONLY)
626} 1044 const_iv (O_WRONLY)
627#endif 1045 const_iv (O_RDWR)
1046 const_iv (O_CREAT)
1047 const_iv (O_TRUNC)
1048 const_iv (O_EXCL)
1049 const_iv (O_APPEND)
628 1050
629/* sendfile always needs emulation */ 1051 const_iv (O_ASYNC)
630static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1052 const_iv (O_DIRECT)
631{ 1053 const_iv (O_NOATIME)
632 ssize_t res;
633 1054
634 if (!count) 1055 const_iv (O_CLOEXEC)
635 return 0; 1056 const_iv (O_NOCTTY)
1057 const_iv (O_NOFOLLOW)
1058 const_iv (O_NONBLOCK)
1059 const_iv (O_EXEC)
1060 const_iv (O_SEARCH)
1061 const_iv (O_DIRECTORY)
1062 const_iv (O_DSYNC)
1063 const_iv (O_RSYNC)
1064 const_iv (O_SYNC)
1065 const_iv (O_PATH)
1066 const_iv (O_TMPFILE)
1067 const_iv (O_TTY_INIT)
636 1068
637#if HAVE_SENDFILE 1069 const_iv (S_IFIFO)
638# if __linux 1070 const_iv (S_IFCHR)
639 res = sendfile (ofd, ifd, &offset, count); 1071 const_iv (S_IFBLK)
1072 const_iv (S_IFLNK)
1073 const_iv (S_IFREG)
1074 const_iv (S_IFDIR)
1075 const_iv (S_IFWHT)
1076 const_iv (S_IFSOCK)
1077 const_iv (S_IFMT)
640 1078
641# elif __freebsd 1079 const_iv (ST_RDONLY)
642 /* 1080 const_iv (ST_NOSUID)
643 * Of course, the freebsd sendfile is a dire hack with no thoughts 1081 const_iv (ST_NODEV)
644 * wasted on making it similar to other I/O functions. 1082 const_iv (ST_NOEXEC)
645 */ 1083 const_iv (ST_SYNCHRONOUS)
646 { 1084 const_iv (ST_MANDLOCK)
647 off_t sbytes; 1085 const_iv (ST_WRITE)
648 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1086 const_iv (ST_APPEND)
1087 const_iv (ST_IMMUTABLE)
1088 const_iv (ST_NOATIME)
1089 const_iv (ST_NODIRATIME)
1090 const_iv (ST_RELATIME)
649 1091
650 if (res < 0 && sbytes) 1092 const_iv (PROT_NONE)
651 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1093 const_iv (PROT_EXEC)
652 res = sbytes; 1094 const_iv (PROT_READ)
1095 const_iv (PROT_WRITE)
1096
1097 const_iv (MAP_PRIVATE)
1098 const_iv (MAP_SHARED)
1099 const_iv (MAP_FIXED)
1100 const_iv (MAP_ANONYMOUS)
1101
1102 /* linuxish */
1103 const_iv (MAP_LOCKED)
1104 const_iv (MAP_NORESERVE)
1105 const_iv (MAP_POPULATE)
1106 const_iv (MAP_NONBLOCK)
1107 const_iv (MAP_GROWSDOWN)
1108 const_iv (MAP_32BIT)
1109 const_iv (MAP_HUGETLB)
1110 const_iv (MAP_STACK)
1111
1112 const_iv (MREMAP_MAYMOVE)
1113 const_iv (MREMAP_FIXED)
1114
1115 const_iv (F_DUPFD_CLOEXEC)
1116
1117 const_iv (F_OFD_GETLK)
1118 const_iv (F_OFD_SETLK)
1119 const_iv (F_OFD_GETLKW)
1120
1121 const_iv (FIFREEZE)
1122 const_iv (FITHAW)
1123 const_iv (FITRIM)
1124 const_iv (FICLONE)
1125 const_iv (FICLONERANGE)
1126 const_iv (FIDEDUPERANGE)
1127
1128 const_iv (FS_IOC_GETFLAGS)
1129 const_iv (FS_IOC_SETFLAGS)
1130 const_iv (FS_IOC_GETVERSION)
1131 const_iv (FS_IOC_SETVERSION)
1132 const_iv (FS_IOC_FIEMAP)
1133 const_iv (FS_IOC_FSGETXATTR)
1134 const_iv (FS_IOC_FSSETXATTR)
1135 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1136 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1137 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1138
1139 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1140
1141 const_iv (FS_SECRM_FL)
1142 const_iv (FS_UNRM_FL)
1143 const_iv (FS_COMPR_FL)
1144 const_iv (FS_SYNC_FL)
1145 const_iv (FS_IMMUTABLE_FL)
1146 const_iv (FS_APPEND_FL)
1147 const_iv (FS_NODUMP_FL)
1148 const_iv (FS_NOATIME_FL)
1149 const_iv (FS_DIRTY_FL)
1150 const_iv (FS_COMPRBLK_FL)
1151 const_iv (FS_NOCOMP_FL)
1152 const_iv (FS_ENCRYPT_FL)
1153 const_iv (FS_BTREE_FL)
1154 const_iv (FS_INDEX_FL)
1155 const_iv (FS_JOURNAL_DATA_FL)
1156 const_iv (FS_NOTAIL_FL)
1157 const_iv (FS_DIRSYNC_FL)
1158 const_iv (FS_TOPDIR_FL)
1159 const_iv (FS_FL_USER_MODIFIABLE)
1160
1161 const_iv (FS_XFLAG_REALTIME)
1162 const_iv (FS_XFLAG_PREALLOC)
1163 const_iv (FS_XFLAG_IMMUTABLE)
1164 const_iv (FS_XFLAG_APPEND)
1165 const_iv (FS_XFLAG_SYNC)
1166 const_iv (FS_XFLAG_NOATIME)
1167 const_iv (FS_XFLAG_NODUMP)
1168 const_iv (FS_XFLAG_RTINHERIT)
1169 const_iv (FS_XFLAG_PROJINHERIT)
1170 const_iv (FS_XFLAG_NOSYMLINKS)
1171 const_iv (FS_XFLAG_EXTSIZE)
1172 const_iv (FS_XFLAG_EXTSZINHERIT)
1173 const_iv (FS_XFLAG_NODEFRAG)
1174 const_iv (FS_XFLAG_FILESTREAM)
1175 const_iv (FS_XFLAG_DAX)
1176 const_iv (FS_XFLAG_HASATTR)
1177
1178 const_iv (FIEMAP_FLAG_SYNC)
1179 const_iv (FIEMAP_FLAG_XATTR)
1180 const_iv (FIEMAP_FLAGS_COMPAT)
1181 const_iv (FIEMAP_EXTENT_LAST)
1182 const_iv (FIEMAP_EXTENT_UNKNOWN)
1183 const_iv (FIEMAP_EXTENT_DELALLOC)
1184 const_iv (FIEMAP_EXTENT_ENCODED)
1185 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1186 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1187 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1188 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1189 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1190 const_iv (FIEMAP_EXTENT_MERGED)
1191 const_iv (FIEMAP_EXTENT_SHARED)
1192
1193 const_iv (SPLICE_F_MOVE)
1194 const_iv (SPLICE_F_NONBLOCK)
1195 const_iv (SPLICE_F_MORE)
1196 const_iv (SPLICE_F_GIFT)
1197
1198 const_iv (EFD_CLOEXEC)
1199 const_iv (EFD_NONBLOCK)
1200 const_iv (EFD_SEMAPHORE)
1201
1202 const_iv (CLOCK_REALTIME)
1203 const_iv (CLOCK_MONOTONIC)
1204 const_iv (CLOCK_BOOTTIME)
1205 const_iv (CLOCK_REALTIME_ALARM)
1206 const_iv (CLOCK_BOOTTIME_ALARM)
1207
1208 const_iv (TFD_NONBLOCK)
1209 const_iv (TFD_CLOEXEC)
1210
1211 const_iv (TFD_TIMER_ABSTIME)
1212 const_iv (TFD_TIMER_CANCEL_ON_SET)
1213
1214 /* these are libeio constants, and are independent of gendef0 */
1215 const_eio (SEEK_SET)
1216 const_eio (SEEK_CUR)
1217 const_eio (SEEK_END)
1218
1219 const_eio (MCL_FUTURE)
1220 const_eio (MCL_CURRENT)
1221
1222 const_eio (MS_ASYNC)
1223 const_eio (MS_INVALIDATE)
1224 const_eio (MS_SYNC)
1225
1226 const_eio (MT_MODIFY)
1227
1228 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1229 const_eio (SYNC_FILE_RANGE_WRITE)
1230 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1231
1232 const_eio (FALLOC_FL_KEEP_SIZE)
1233 const_eio (FALLOC_FL_PUNCH_HOLE)
1234 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1235 const_eio (FALLOC_FL_ZERO_RANGE)
1236 const_eio (FALLOC_FL_INSERT_RANGE)
1237 const_eio (FALLOC_FL_UNSHARE_RANGE)
1238
1239 const_eio (RENAME_NOREPLACE)
1240 const_eio (RENAME_EXCHANGE)
1241 const_eio (RENAME_WHITEOUT)
1242
1243 const_eio (READDIR_DENTS)
1244 const_eio (READDIR_DIRS_FIRST)
1245 const_eio (READDIR_STAT_ORDER)
1246 const_eio (READDIR_FOUND_UNKNOWN)
1247
1248 const_eio (DT_UNKNOWN)
1249 const_eio (DT_FIFO)
1250 const_eio (DT_CHR)
1251 const_eio (DT_DIR)
1252 const_eio (DT_BLK)
1253 const_eio (DT_REG)
1254 const_eio (DT_LNK)
1255 const_eio (DT_SOCK)
1256 const_eio (DT_WHT)
653 } 1257 };
654 1258
655# elif __hpux 1259 aio_stash = gv_stashpv ("IO::AIO" , 1);
656 res = sendfile (ofd, ifd, offset, count, 0, 0); 1260 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1261 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1262 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
657 1263
658# elif __solaris 1264 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
659 { 1265 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
660 struct sendfilevec vec;
661 size_t sbytes;
662 1266
663 vec.sfv_fd = ifd; 1267 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
664 vec.sfv_flag = 0;
665 vec.sfv_off = offset;
666 vec.sfv_len = count;
667 1268
668 res = sendfilev (ofd, &vec, 1, &sbytes); 1269 reinit ();
1270}
669 1271
670 if (res < 0 && sbytes) 1272void
1273reinit ()
1274 PROTOTYPE:
1275
1276void
1277max_poll_reqs (unsigned int nreqs)
1278 PROTOTYPE: $
1279 CODE:
1280 eio_set_max_poll_reqs (nreqs);
1281
1282void
1283max_poll_time (double nseconds)
1284 PROTOTYPE: $
1285 CODE:
1286 eio_set_max_poll_time (nseconds);
1287
1288void
1289min_parallel (unsigned int nthreads)
1290 PROTOTYPE: $
1291 CODE:
1292 eio_set_min_parallel (nthreads);
1293
1294void
1295max_parallel (unsigned int nthreads)
1296 PROTOTYPE: $
1297 CODE:
1298 eio_set_max_parallel (nthreads);
1299
1300void
1301max_idle (unsigned int nthreads)
1302 PROTOTYPE: $
1303 CODE:
1304 eio_set_max_idle (nthreads);
1305
1306void
1307idle_timeout (unsigned int seconds)
1308 PROTOTYPE: $
1309 CODE:
1310 eio_set_idle_timeout (seconds);
1311
1312void
1313max_outstanding (unsigned int maxreqs)
1314 PROTOTYPE: $
1315 CODE:
1316 max_outstanding = maxreqs;
1317
1318void
1319aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1320 PPCODE:
1321{
1322 dREQ;
1323
1324 req->type = EIO_WD_OPEN;
1325 req_set_path1 (req, pathname);
1326
1327 REQ_SEND;
1328}
1329
1330void
1331aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1332 PPCODE:
1333{
1334 dREQ;
1335
1336 req->type = EIO_OPEN;
1337 req_set_path1 (req, pathname);
1338 req->int1 = flags;
1339 req->int2 = mode;
1340
1341 REQ_SEND;
1342}
1343
1344void
1345aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1346 ALIAS:
1347 aio_fsync = EIO_FSYNC
1348 aio_fdatasync = EIO_FDATASYNC
1349 aio_syncfs = EIO_SYNCFS
1350 PPCODE:
1351{
1352 int fd = s_fileno_croak (fh, 0);
1353 dREQ;
1354
1355 req->type = ix;
1356 req->sv1 = newSVsv (fh);
1357 req->int1 = fd;
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1364 PPCODE:
1365{
1366 int fd = s_fileno_croak (fh, 0);
1367 dREQ;
1368
1369 req->type = EIO_SYNC_FILE_RANGE;
1370 req->sv1 = newSVsv (fh);
1371 req->int1 = fd;
1372 req->offs = offset;
671 res = sbytes; 1373 req->size = nbytes;
672 } 1374 req->int2 = flags;
673 1375
674# endif 1376 REQ_SEND;
1377}
1378
1379void
1380aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1381 PPCODE:
1382{
1383 int fd = s_fileno_croak (fh, 0);
1384 dREQ;
1385
1386 req->type = EIO_FALLOCATE;
1387 req->sv1 = newSVsv (fh);
1388 req->int1 = fd;
1389 req->int2 = mode;
1390 req->offs = offset;
1391 req->size = len;
1392
1393 REQ_SEND;
1394}
1395
1396void
1397aio_close (SV *fh, SV *callback = &PL_sv_undef)
1398 PPCODE:
1399{
1400 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1401 int fd = s_fileno_croak (fh, 0);
1402 dREQ;
1403
1404 if (expect_false (close_fd < 0))
1405 {
1406 int pipefd [2];
1407
1408 if (
1409#ifdef _WIN32
1410 _pipe (pipefd, 1, _O_BINARY) < 0
675#else 1411#else
676 res = -1; 1412 pipe (pipefd) < 0
677 errno = ENOSYS; 1413 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
678#endif 1414#endif
679 1415 || close (pipefd [1]) < 0
680 if (res < 0
681 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
682#if __solaris
683 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
684#endif
685 )
686 )
687 {
688 /* emulate sendfile. this is a major pain in the ass */
689 char buf[4096];
690 res = 0;
691
692 while (count)
693 {
694 ssize_t cnt;
695
696 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
697
698 if (cnt <= 0)
699 { 1416 )
700 if (cnt && !res) res = -1; 1417 abort (); /*D*/
701 break;
702 }
703 1418
704 cnt = write (ofd, buf, cnt); 1419 close_fd = pipefd [0];
705
706 if (cnt <= 0)
707 {
708 if (cnt && !res) res = -1;
709 break;
710 }
711
712 offset += cnt;
713 res += cnt;
714 count -= cnt;
715 }
716 }
717
718 return res;
719}
720
721/* read a full directory */
722static int scandir_ (const char *path, void **namesp)
723{
724 DIR *dirp = opendir (path);
725 union
726 {
727 struct dirent d;
728 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
729 } u;
730 struct dirent *entp;
731 char *name, *names;
732 int memlen = 4096;
733 int memofs = 0;
734 int res = 0;
735 int errorno;
736
737 if (!dirp)
738 return -1;
739
740 names = malloc (memlen);
741
742 for (;;)
743 {
744 errno = 0, readdir_r (dirp, &u.d, &entp);
745
746 if (!entp)
747 break;
748
749 name = entp->d_name;
750
751 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
752 {
753 int len = strlen (name) + 1;
754
755 res++;
756
757 while (memofs + len > memlen)
758 {
759 memlen *= 2;
760 names = realloc (names, memlen);
761 if (!names)
762 break;
763 }
764
765 memcpy (names + memofs, name, len);
766 memofs += len;
767 }
768 }
769
770 errorno = errno;
771 closedir (dirp);
772
773 if (errorno)
774 {
775 free (names);
776 errno = errorno;
777 res = -1;
778 }
779
780 *namesp = (void *)names;
781 return res;
782}
783
784/*****************************************************************************/
785
786static void *aio_proc (void *thr_arg)
787{
788 aio_req req;
789 int type;
790
791 do
792 {
793 pthread_mutex_lock (&reqlock);
794
795 for (;;)
796 {
797 req = reqs;
798
799 if (reqs)
800 {
801 reqs = reqs->next;
802 if (!reqs) reqe = 0;
803 }
804
805 if (req)
806 break;
807
808 pthread_cond_wait (&reqwait, &reqlock);
809 }
810
811 pthread_mutex_unlock (&reqlock);
812
813 errno = 0; /* strictly unnecessary */
814 type = req->type; /* remember type for QUIT check */
815
816 if (!(req->flags & FLAG_CANCELLED))
817 switch (type)
818 {
819 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
820 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
821
822 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
823 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
824
825 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
826 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
827 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
828
829 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
830 case REQ_CLOSE: req->result = close (req->fd); break;
831 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
832 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
833 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
834 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
835 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
836
837 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
838 case REQ_FSYNC: req->result = fsync (req->fd); break;
839 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
840
841 case REQ_SLEEP:
842 {
843 struct timeval tv;
844
845 tv.tv_sec = req->fd;
846 tv.tv_usec = req->fd2;
847
848 req->result = select (0, 0, 0, 0, &tv);
849 }
850
851 case REQ_GROUP:
852 case REQ_NOP:
853 case REQ_QUIT:
854 break;
855
856 default:
857 req->result = ENOSYS;
858 break;
859 } 1420 }
860 1421
861 req->errorno = errno; 1422 req->type = EIO_DUP2;
862 1423 req->int1 = close_fd;
863 pthread_mutex_lock (&reslock); 1424 req->sv2 = newSVsv (fh);
864
865 req->next = 0; 1425 req->int2 = fd;
866 1426
867 if (rese) 1427 REQ_SEND;
868 {
869 rese->next = req;
870 rese = req;
871 }
872 else
873 {
874 rese = ress = req;
875
876 /* write a dummy byte to the pipe so fh becomes ready */
877 write (respipe [1], &respipe, 1);
878 }
879
880 pthread_mutex_unlock (&reslock);
881 }
882 while (type != REQ_QUIT);
883
884 return 0;
885} 1428}
886 1429
887/*****************************************************************************/
888
889static void atfork_prepare (void)
890{
891 pthread_mutex_lock (&reqlock);
892 pthread_mutex_lock (&reslock);
893#if !HAVE_PREADWRITE
894 pthread_mutex_lock (&preadwritelock);
895#endif
896#if !HAVE_READDIR_R
897 pthread_mutex_lock (&readdirlock);
898#endif
899}
900
901static void atfork_parent (void)
902{
903#if !HAVE_READDIR_R
904 pthread_mutex_unlock (&readdirlock);
905#endif
906#if !HAVE_PREADWRITE
907 pthread_mutex_unlock (&preadwritelock);
908#endif
909 pthread_mutex_unlock (&reslock);
910 pthread_mutex_unlock (&reqlock);
911}
912
913static void atfork_child (void)
914{
915 aio_req prv;
916
917 started = 0;
918
919 while (reqs)
920 {
921 prv = reqs;
922 reqs = prv->next;
923 req_free (prv);
924 }
925
926 reqs = reqe = 0;
927
928 while (ress)
929 {
930 prv = ress;
931 ress = prv->next;
932 req_free (prv);
933 }
934
935 ress = rese = 0;
936
937 close (respipe [0]);
938 close (respipe [1]);
939 create_pipe ();
940
941 atfork_parent ();
942}
943
944#define dREQ \
945 aio_req req; \
946 int req_pri = next_pri; \
947 next_pri = DEFAULT_PRI + PRI_BIAS; \
948 \
949 if (SvOK (callback) && !SvROK (callback)) \
950 croak ("callback must be undef or of reference type"); \
951 \
952 Newz (0, req, 1, aio_cb); \
953 if (!req) \
954 croak ("out of memory during aio_req allocation"); \
955 \
956 req->callback = newSVsv (callback); \
957 req->pri = req_pri
958
959#define REQ_SEND \
960 req_send (req); \
961 \
962 if (GIMME_V != G_VOID) \
963 XPUSHs (req_sv (req, AIO_REQ_KLASS));
964
965MODULE = IO::AIO PACKAGE = IO::AIO
966
967PROTOTYPES: ENABLE
968
969BOOT:
970{
971 HV *stash = gv_stashpv ("IO::AIO", 1);
972 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
975
976 create_pipe ();
977 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
978}
979
980void 1430void
981min_parallel (nthreads) 1431aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
982 int nthreads
983 PROTOTYPE: $
984
985void
986max_parallel (nthreads)
987 int nthreads
988 PROTOTYPE: $
989
990int
991max_outstanding (nreqs)
992 int nreqs
993 PROTOTYPE: $
994 CODE: 1432 PPCODE:
995 RETVAL = max_outstanding;
996 max_outstanding = nreqs;
997
998void
999aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1000 SV * pathname
1001 int flags
1002 int mode
1003 SV * callback
1004 PROTOTYPE: $$$;$
1005 PPCODE:
1006{ 1433{
1434 int fd = s_fileno_croak (fh, 0);
1007 dREQ; 1435 dREQ;
1008 1436
1009 req->type = REQ_OPEN; 1437 req->type = EIO_SEEK;
1010 req->data = newSVsv (pathname); 1438 req->sv1 = newSVsv (fh);
1011 req->dataptr = SvPVbyte_nolen (req->data); 1439 req->int1 = fd;
1012 req->fd = flags; 1440 req->offs = SvVAL64 (offset);
1013 req->mode = mode; 1441 req->int2 = whence;
1014 1442
1015 REQ_SEND; 1443 REQ_SEND;
1016} 1444}
1017 1445
1018void 1446void
1019aio_close (fh,callback=&PL_sv_undef) 1447aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1020 SV * fh
1021 SV * callback
1022 PROTOTYPE: $;$
1023 ALIAS: 1448 ALIAS:
1024 aio_close = REQ_CLOSE
1025 aio_fsync = REQ_FSYNC
1026 aio_fdatasync = REQ_FDATASYNC
1027 PPCODE:
1028{
1029 dREQ;
1030
1031 req->type = ix;
1032 req->fh = newSVsv (fh);
1033 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1034
1035 REQ_SEND (req);
1036}
1037
1038void
1039aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1040 SV * fh
1041 UV offset
1042 UV length
1043 SV * data
1044 UV dataoffset
1045 SV * callback
1046 ALIAS:
1047 aio_read = REQ_READ 1449 aio_read = EIO_READ
1048 aio_write = REQ_WRITE 1450 aio_write = EIO_WRITE
1049 PROTOTYPE: $$$$$;$
1050 PPCODE: 1451 PPCODE:
1051{ 1452{
1052 aio_req req;
1053 STRLEN svlen; 1453 STRLEN svlen;
1454 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1054 char *svptr = SvPVbyte (data, svlen); 1455 char *svptr = SvPVbyte (data, svlen);
1055 1456 UV len = SvUV (length);
1056 SvUPGRADE (data, SVt_PV);
1057 SvPOK_on (data);
1058 1457
1059 if (dataoffset < 0) 1458 if (dataoffset < 0)
1060 dataoffset += svlen; 1459 dataoffset += svlen;
1061 1460
1062 if (dataoffset < 0 || dataoffset > svlen) 1461 if (dataoffset < 0 || dataoffset > svlen)
1063 croak ("data offset outside of string"); 1462 croak ("dataoffset outside of data scalar");
1064 1463
1065 if (ix == REQ_WRITE) 1464 if (ix == EIO_WRITE)
1066 { 1465 {
1067 /* write: check length and adjust. */ 1466 /* write: check length and adjust. */
1068 if (length < 0 || length + dataoffset > svlen) 1467 if (!SvOK (length) || len + dataoffset > svlen)
1069 length = svlen - dataoffset; 1468 len = svlen - dataoffset;
1070 } 1469 }
1071 else 1470 else
1072 { 1471 {
1073 /* read: grow scalar as necessary */ 1472 /* read: check type and grow scalar as necessary */
1473 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1074 svptr = SvGROW (data, length + dataoffset); 1474 svptr = sv_grow (data, len + dataoffset + 1);
1475 else if (SvCUR (data) < len + dataoffset)
1476 croak ("length + dataoffset outside of scalar, and cannot grow");
1075 } 1477 }
1076
1077 if (length < 0)
1078 croak ("length must not be negative");
1079 1478
1080 { 1479 {
1081 dREQ; 1480 dREQ;
1082 1481
1083 req->type = ix; 1482 req->type = ix;
1084 req->fh = newSVsv (fh); 1483 req->sv1 = newSVsv (fh);
1085 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1484 req->int1 = fd;
1086 : IoOFP (sv_2io (fh))); 1485 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087 req->offset = offset; 1486 req->size = len;
1088 req->length = length;
1089 req->data = SvREFCNT_inc (data); 1487 req->sv2 = SvREFCNT_inc (data);
1090 req->dataptr = (char *)svptr + dataoffset; 1488 req->ptr2 = (char *)svptr + dataoffset;
1489 req->stroffset = dataoffset;
1091 1490
1092 if (!SvREADONLY (data)) 1491 if (!SvREADONLY (data))
1093 { 1492 {
1094 SvREADONLY_on (data); 1493 SvREADONLY_on (data);
1095 req->data2ptr = (void *)data; 1494 req->flags |= FLAG_SV2_RO_OFF;
1096 } 1495 }
1097 1496
1098 REQ_SEND; 1497 REQ_SEND;
1099 } 1498 }
1100} 1499}
1101 1500
1102void 1501void
1103aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1502aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1104 SV * out_fh 1503 ALIAS:
1105 SV * in_fh 1504 aio_ioctl = EIO_IOCTL
1106 UV in_offset 1505 aio_fcntl = EIO_FCNTL
1107 UV length
1108 SV * callback
1109 PROTOTYPE: $$$$;$
1110 PPCODE: 1506 PPCODE:
1111{ 1507{
1112 dREQ; 1508 int fd = s_fileno_croak (fh, 0);
1509 char *svptr;
1113 1510
1114 req->type = REQ_SENDFILE; 1511 if (SvPOK (arg) || !SvNIOK (arg))
1115 req->fh = newSVsv (out_fh);
1116 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1117 req->fh2 = newSVsv (in_fh);
1118 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1119 req->offset = in_offset;
1120 req->length = length;
1121
1122 REQ_SEND;
1123}
1124
1125void
1126aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1127 SV * fh
1128 UV offset
1129 IV length
1130 SV * callback
1131 PROTOTYPE: $$$;$
1132 PPCODE:
1133{
1134 dREQ;
1135
1136 req->type = REQ_READAHEAD;
1137 req->fh = newSVsv (fh);
1138 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1139 req->offset = offset;
1140 req->length = length;
1141
1142 REQ_SEND;
1143}
1144
1145void
1146aio_stat (fh_or_path,callback=&PL_sv_undef)
1147 SV * fh_or_path
1148 SV * callback
1149 ALIAS:
1150 aio_stat = REQ_STAT
1151 aio_lstat = REQ_LSTAT
1152 PPCODE:
1153{
1154 dREQ;
1155
1156 New (0, req->statdata, 1, Stat_t);
1157 if (!req->statdata)
1158 { 1512 {
1159 req_free (req); 1513 STRLEN svlen;
1160 croak ("out of memory during aio_req->statdata allocation"); 1514 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1161 } 1515#ifdef IOCPARM_LEN
1516 STRLEN need = IOCPARM_LEN (request);
1517#else
1518 STRLEN need = 256;
1519#endif
1162 1520
1163 if (SvPOK (fh_or_path)) 1521 if (svlen < need)
1164 { 1522 svptr = SvGROW (arg, need);
1165 req->type = ix;
1166 req->data = newSVsv (fh_or_path);
1167 req->dataptr = SvPVbyte_nolen (req->data);
1168 } 1523 }
1169 else 1524 else
1525 svptr = (char *)SvIV (arg);
1526
1170 { 1527 {
1528 dREQ;
1529
1171 req->type = REQ_FSTAT; 1530 req->type = ix;
1172 req->fh = newSVsv (fh_or_path); 1531 req->sv1 = newSVsv (fh);
1173 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1532 req->int1 = fd;
1533 req->int2 = (long)request;
1534 req->sv2 = SvREFCNT_inc (arg);
1535 req->ptr2 = svptr;
1536
1537 REQ_SEND;
1174 } 1538 }
1539}
1540
1541void
1542aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1543 ALIAS:
1544 aio_readlink = EIO_READLINK
1545 aio_realpath = EIO_REALPATH
1546 PPCODE:
1547{
1548 dREQ;
1549
1550 req->type = ix;
1551 req_set_path1 (req, pathname);
1175 1552
1176 REQ_SEND; 1553 REQ_SEND;
1177} 1554}
1178 1555
1179void 1556void
1180aio_unlink (pathname,callback=&PL_sv_undef) 1557aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1181 SV * pathname 1558 PPCODE:
1182 SV * callback 1559{
1560 int ifd = s_fileno_croak (in_fh , 0);
1561 int ofd = s_fileno_croak (out_fh, 1);
1562 dREQ;
1563
1564 req->type = EIO_SENDFILE;
1565 req->sv1 = newSVsv (out_fh);
1566 req->int1 = ofd;
1567 req->sv2 = newSVsv (in_fh);
1568 req->int2 = ifd;
1569 req->offs = in_offset;
1570 req->size = length;
1571
1572 REQ_SEND;
1573}
1574
1575void
1576aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1577 PPCODE:
1578{
1579 int fd = s_fileno_croak (fh, 0);
1580 dREQ;
1581
1582 req->type = EIO_READAHEAD;
1583 req->sv1 = newSVsv (fh);
1584 req->int1 = fd;
1585 req->offs = offset;
1586 req->size = length;
1587
1588 REQ_SEND;
1589}
1590
1591void
1592aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1183 ALIAS: 1593 ALIAS:
1594 aio_stat = EIO_STAT
1595 aio_lstat = EIO_LSTAT
1596 aio_statvfs = EIO_STATVFS
1597 PPCODE:
1598{
1599 dREQ;
1600
1601 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1602
1603 REQ_SEND;
1604}
1605
1606UV
1607major (UV dev)
1608 ALIAS:
1609 minor = 1
1610 CODE:
1611 RETVAL = ix ? minor (dev) : major (dev);
1612 OUTPUT:
1613 RETVAL
1614
1615UV
1616makedev (UV maj, UV min)
1617 CODE:
1618 RETVAL = makedev (maj, min);
1619 OUTPUT:
1620 RETVAL
1621
1622void
1623aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1624 PPCODE:
1625{
1626 dREQ;
1627
1628 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1629 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1630 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1631
1632 REQ_SEND;
1633}
1634
1635void
1636aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1637 PPCODE:
1638{
1639 dREQ;
1640
1641 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1642 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1649 PPCODE:
1650{
1651 dREQ;
1652
1653 req->int2 = mode;
1654 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1655
1656 REQ_SEND;
1657}
1658
1659void
1660aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1661 PPCODE:
1662{
1663 dREQ;
1664
1665 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1666 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1667 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1668
1669 REQ_SEND;
1670}
1671
1672void
1673aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1674 PPCODE:
1675{
1676 dREQ;
1677
1678 req->type = EIO_READDIR;
1679 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1680
1681 if (flags & EIO_READDIR_DENTS)
1682 req->int1 |= EIO_READDIR_CUSTOM2;
1683
1684 req_set_path1 (req, pathname);
1685
1686 REQ_SEND;
1687}
1688
1689void
1690aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1691 PPCODE:
1692{
1693 dREQ;
1694
1695 req->type = EIO_MKDIR;
1696 req->int2 = mode;
1697 req_set_path1 (req, pathname);
1698
1699 REQ_SEND;
1700}
1701
1702void
1703aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1704 ALIAS:
1184 aio_unlink = REQ_UNLINK 1705 aio_unlink = EIO_UNLINK
1185 aio_rmdir = REQ_RMDIR 1706 aio_rmdir = EIO_RMDIR
1186 aio_readdir = REQ_READDIR 1707 aio_readdir = EIO_READDIR
1187 PPCODE: 1708 PPCODE:
1188{ 1709{
1189 dREQ; 1710 dREQ;
1190 1711
1191 req->type = ix; 1712 req->type = ix;
1192 req->data = newSVsv (pathname); 1713 req_set_path1 (req, pathname);
1193 req->dataptr = SvPVbyte_nolen (req->data); 1714
1194
1195 REQ_SEND; 1715 REQ_SEND;
1196} 1716}
1197 1717
1198void 1718void
1199aio_link (oldpath,newpath,callback=&PL_sv_undef) 1719aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1200 SV * oldpath
1201 SV * newpath
1202 SV * callback
1203 ALIAS: 1720 ALIAS:
1204 aio_link = REQ_LINK 1721 aio_link = EIO_LINK
1205 aio_symlink = REQ_SYMLINK 1722 aio_symlink = EIO_SYMLINK
1206 aio_rename = REQ_RENAME 1723 aio_rename = EIO_RENAME
1207 PPCODE: 1724 PPCODE:
1208{ 1725{
1726 eio_wd wd2 = 0;
1209 dREQ; 1727 dREQ;
1210 1728
1211 req->type = ix; 1729 req->type = ix;
1212 req->fh = newSVsv (oldpath); 1730 req_set_path1 (req, oldpath);
1213 req->data2ptr = SvPVbyte_nolen (req->fh); 1731 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1214 req->data = newSVsv (newpath); 1732 req->int3 = (long)wd2;
1215 req->dataptr = SvPVbyte_nolen (req->data);
1216 1733
1217 REQ_SEND; 1734 REQ_SEND;
1218} 1735}
1219 1736
1220void 1737void
1221aio_sleep (delay,callback=&PL_sv_undef) 1738aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1222 double delay
1223 SV * callback
1224 PPCODE: 1739 PPCODE:
1225{ 1740{
1741 eio_wd wd2 = 0;
1226 dREQ; 1742 dREQ;
1227 1743
1228 req->type = REQ_SLEEP; 1744 req->type = EIO_RENAME;
1229 req->fd = delay < 0. ? 0 : delay; 1745 req_set_path1 (req, oldpath);
1230 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1746 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1231 1747 req->int2 = flags;
1748 req->int3 = (long)wd2;
1749
1232 REQ_SEND; 1750 REQ_SEND;
1233} 1751}
1234 1752
1235void 1753void
1236aio_group (callback=&PL_sv_undef) 1754aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1237 SV * callback 1755 PPCODE:
1238 PROTOTYPE: ;$ 1756{
1757 dREQ;
1758
1759 req->type = EIO_MKNOD;
1760 req->int2 = (mode_t)mode;
1761 req->offs = dev;
1762 req_set_path1 (req, pathname);
1763
1764 REQ_SEND;
1765}
1766
1767void
1768aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1769 ALIAS:
1770 aio_mtouch = EIO_MTOUCH
1771 aio_msync = EIO_MSYNC
1239 PPCODE: 1772 PPCODE:
1240{ 1773{
1774 STRLEN svlen;
1775 char *svptr = SvPVbyte (data, svlen);
1776 UV len = SvUV (length);
1777
1778 if (flags < 0)
1779 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1780
1781 if (offset < 0)
1782 offset += svlen;
1783
1784 if (offset < 0 || offset > svlen)
1785 croak ("offset outside of scalar");
1786
1787 if (!SvOK (length) || len + offset > svlen)
1788 len = svlen - offset;
1789
1790 {
1791 dREQ;
1792
1793 req->type = ix;
1794 req->sv2 = SvREFCNT_inc (data);
1795 req->ptr2 = (char *)svptr + offset;
1796 req->size = len;
1797 req->int1 = flags;
1798
1799 REQ_SEND;
1800 }
1801}
1802
1803void
1804aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1805 PPCODE:
1806{
1807 STRLEN svlen;
1808 char *svptr = SvPVbyte (data, svlen);
1809 UV len = SvUV (length);
1810
1811 if (offset < 0)
1812 offset += svlen;
1813
1814 if (offset < 0 || offset > svlen)
1815 croak ("offset outside of scalar");
1816
1817 if (!SvOK (length) || len + offset > svlen)
1818 len = svlen - offset;
1819
1820 {
1821 dREQ;
1822
1823 req->type = EIO_MLOCK;
1824 req->sv2 = SvREFCNT_inc (data);
1825 req->ptr2 = (char *)svptr + offset;
1826 req->size = len;
1827
1828 REQ_SEND;
1829 }
1830}
1831
1832void
1833aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1834 PPCODE:
1835{
1836 dREQ;
1837
1838 req->type = EIO_MLOCKALL;
1839 req->int1 = flags;
1840
1841 REQ_SEND;
1842}
1843
1844void
1845aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1846 PPCODE:
1847{
1848 int fd = s_fileno_croak (fh, 0);
1241 dREQ; 1849 dREQ;
1242 1850
1243 req->type = REQ_GROUP; 1851 req->type = EIO_CUSTOM;
1244 req_send (req); 1852 req->sv1 = newSVsv (fh);
1853 req->int1 = fd;
1245 1854
1246 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1855 req->feed = fiemap;
1247} 1856#if HAVE_FIEMAP
1857 /* keep our fingers crossed that the next two types are 64 bit */
1858 req->offs = start;
1859 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1860 req->int2 = flags;
1861 req->int3 = SvOK (count) ? SvIV (count) : -1;
1862#endif
1248 1863
1864 REQ_SEND;
1865}
1866
1249void 1867void
1250aio_nop (callback=&PL_sv_undef) 1868aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1251 SV * callback 1869 PPCODE:
1870{
1871 char *svptr = 0;
1872
1873 sv_clear_foreign (data);
1874
1875 if (length) /* known length, directly read into scalar */
1876 {
1877 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1878 svptr = sv_grow (data, length + 1);
1879 else if (SvCUR (data) < length)
1880 croak ("length outside of scalar, and cannot grow");
1881 else
1882 svptr = SvPVbyte_nolen (data);
1883 }
1884
1885 {
1886 dREQ;
1887
1888 req->type = EIO_SLURP;
1889 req_set_path1 (req, pathname);
1890 req->offs = offset;
1891 req->size = length;
1892 req->sv2 = SvREFCNT_inc (data);
1893 req->ptr2 = svptr;
1894
1895 if (!SvREADONLY (data))
1896 {
1897 SvREADONLY_on (data);
1898 req->flags |= FLAG_SV2_RO_OFF;
1899 }
1900
1901 REQ_SEND;
1902 }
1903}
1904
1905void
1906aio_busy (double delay, SV *callback = &PL_sv_undef)
1252 PPCODE: 1907 PPCODE:
1253{ 1908{
1254 dREQ; 1909 dREQ;
1255 1910
1256 req->type = REQ_NOP; 1911 req->type = EIO_BUSY;
1912 req->nv1 = delay < 0. ? 0. : delay;
1257 1913
1258 REQ_SEND; 1914 REQ_SEND;
1259} 1915}
1260 1916
1261#if 0
1262
1263void 1917void
1264aio_pri (int pri = DEFAULT_PRI) 1918aio_group (SV *callback = &PL_sv_undef)
1919 PPCODE:
1920{
1921 dREQ;
1922
1923 req->type = EIO_GROUP;
1924
1925 PUTBACK;
1926 req_submit (req);
1927 SPAGAIN;
1928
1929 XPUSHs (req_sv (req, aio_grp_stash));
1930}
1931
1932void
1933aio_nop (SV *callback = &PL_sv_undef)
1934 ALIAS:
1935 aio_nop = EIO_NOP
1936 aio_sync = EIO_SYNC
1937 PPCODE:
1938{
1939 dREQ;
1940
1941 req->type = ix;
1942
1943 REQ_SEND;
1944}
1945
1946int
1947aioreq_pri (int pri = NO_INIT)
1265 CODE: 1948 CODE:
1949 RETVAL = next_pri;
1950 if (items > 0)
1951 {
1266 if (pri < PRI_MIN) pri = PRI_MIN; 1952 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1267 if (pri > PRI_MAX) pri = PRI_MAX; 1953 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1268 next_pri = pri + PRI_BIAS; 1954 next_pri = pri;
1955 }
1956 OUTPUT:
1957 RETVAL
1269 1958
1270#endif 1959void
1960aioreq_nice (int nice = 0)
1961 CODE:
1962 nice = next_pri - nice;
1963 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1964 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1965 next_pri = nice;
1271 1966
1272void 1967void
1273flush () 1968flush ()
1274 PROTOTYPE:
1275 CODE: 1969 CODE:
1276 while (nreqs) 1970 while (eio_nreqs ())
1277 { 1971 {
1278 poll_wait (); 1972 poll_wait ();
1279 poll_cb (); 1973 poll_cb ();
1280 } 1974 }
1281 1975
1282void 1976int
1283poll() 1977poll ()
1284 PROTOTYPE:
1285 CODE: 1978 CODE:
1286 if (nreqs)
1287 {
1288 poll_wait (); 1979 poll_wait ();
1289 poll_cb (); 1980 RETVAL = poll_cb ();
1290 }
1291
1292int
1293poll_fileno()
1294 PROTOTYPE:
1295 CODE:
1296 RETVAL = respipe [0];
1297 OUTPUT: 1981 OUTPUT:
1298 RETVAL 1982 RETVAL
1299 1983
1300int 1984int
1985poll_fileno ()
1986 CODE:
1987 RETVAL = s_epipe_fd (&respipe);
1988 OUTPUT:
1989 RETVAL
1990
1991int
1301poll_cb(...) 1992poll_cb (...)
1302 PROTOTYPE: 1993 PROTOTYPE:
1303 CODE: 1994 CODE:
1304 RETVAL = poll_cb (); 1995 RETVAL = poll_cb ();
1305 OUTPUT: 1996 OUTPUT:
1306 RETVAL 1997 RETVAL
1307 1998
1308void 1999void
1309poll_wait() 2000poll_wait ()
1310 PROTOTYPE:
1311 CODE: 2001 CODE:
1312 if (nreqs)
1313 poll_wait (); 2002 poll_wait ();
1314 2003
1315int 2004int
1316nreqs() 2005nreqs ()
1317 PROTOTYPE:
1318 CODE: 2006 CODE:
1319 RETVAL = nreqs; 2007 RETVAL = eio_nreqs ();
1320 OUTPUT: 2008 OUTPUT:
1321 RETVAL 2009 RETVAL
1322 2010
2011int
2012nready ()
2013 CODE:
2014 RETVAL = eio_nready ();
2015 OUTPUT:
2016 RETVAL
2017
2018int
2019npending ()
2020 CODE:
2021 RETVAL = eio_npending ();
2022 OUTPUT:
2023 RETVAL
2024
2025int
2026nthreads ()
2027 CODE:
2028 RETVAL = eio_nthreads ();
2029 OUTPUT:
2030 RETVAL
2031
2032int
2033fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2034 CODE:
2035 RETVAL = posix_fadvise (fh, offset, length, advice);
2036 OUTPUT:
2037 RETVAL
2038
2039IV
2040sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2041 CODE:
2042 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2043 OUTPUT:
2044 RETVAL
2045
2046void
2047mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2048 PPCODE:
2049 sv_clear_foreign (scalar);
2050{
2051 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2052 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2053 if (addr == (void *)-1)
2054 XSRETURN_NO;
2055
2056 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2057
2058 if (!(prot & PROT_WRITE))
2059 SvREADONLY_on (scalar);
2060
2061 XSRETURN_YES;
2062}
2063
2064void
2065munmap (SV *scalar)
2066 CODE:
2067 sv_clear_foreign (scalar);
2068
2069SV *
2070mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
2071 CODE:
2072{
2073 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2074 void *new;
2075
2076 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2077 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2078
2079 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2080
2081 RETVAL = &PL_sv_no;
2082
2083 if (new != (void *)-1)
2084 {
2085 RETVAL = new == (void *)mg->mg_ptr
2086 ? newSVpvn ("0 but true", 10)
2087 : &PL_sv_yes;
2088
2089 mg->mg_ptr = (char *)new;
2090 mg->mg_obj = (SV *)new_length;
2091
2092 SvPVX (scalar) = mg->mg_ptr;
2093 SvCUR_set (scalar, new_length);
2094 }
2095}
2096 OUTPUT:
2097 RETVAL
2098
2099int
2100madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2101 ALIAS:
2102 mprotect = 1
2103 CODE:
2104{
2105 STRLEN svlen;
2106 void *addr = SvPVbyte (scalar, svlen);
2107 STRLEN len = SvUV (length);
2108
2109 if (offset < 0)
2110 offset += svlen;
2111
2112 if (offset < 0 || offset > svlen)
2113 croak ("offset outside of scalar");
2114
2115 if (!SvOK (length) || len + offset > svlen)
2116 len = svlen - offset;
2117
2118 addr = (void *)(((intptr_t)addr) + offset);
2119 eio_page_align (&addr, &len);
2120
2121 switch (ix)
2122 {
2123 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2124 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2125 }
2126}
2127 OUTPUT:
2128 RETVAL
2129
2130int
2131munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2132 CODE:
2133{
2134 STRLEN svlen;
2135 void *addr = SvPVbyte (scalar, svlen);
2136 size_t len = SvUV (length);
2137
2138 if (offset < 0)
2139 offset += svlen;
2140
2141 if (offset < 0 || offset > svlen)
2142 croak ("offset outside of scalar");
2143
2144 if (!SvOK (length) || len + offset > svlen)
2145 len = svlen - offset;
2146
2147 addr = (void *)(((intptr_t)addr) + offset);
2148 eio_page_align (&addr, &len);
2149#if _POSIX_MEMLOCK_RANGE
2150 RETVAL = munlock (addr, len);
2151#else
2152 RETVAL = EIO_ENOSYS ();
2153#endif
2154}
2155 OUTPUT:
2156 RETVAL
2157
2158int
2159munlockall ()
2160 CODE:
2161#if _POSIX_MEMLOCK
2162 munlockall ();
2163#else
2164 RETVAL = EIO_ENOSYS ();
2165#endif
2166 OUTPUT:
2167 RETVAL
2168
2169int
2170splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2171 CODE:
2172{
2173#if HAVE_LINUX_SPLICE
2174 loff_t off_in_, off_out_;
2175 RETVAL = splice (
2176 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2177 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2178 length, flags
2179 );
2180#else
2181 RETVAL = EIO_ENOSYS ();
2182#endif
2183}
2184 OUTPUT:
2185 RETVAL
2186
2187int
2188tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2189 CODE:
2190#if HAVE_LINUX_SPLICE
2191 RETVAL = tee (rfh, wfh, length, flags);
2192#else
2193 RETVAL = EIO_ENOSYS ();
2194#endif
2195 OUTPUT:
2196 RETVAL
2197
2198int
2199pipesize (aio_rfd rfh, int new_size = -1)
2200 PROTOTYPE: $;$
2201 CODE:
2202#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2203 if (new_size >= 0)
2204 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2205 else
2206 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2207#else
2208 errno = ENOSYS;
2209 RETVAL = -1;
2210#endif
2211 OUTPUT:
2212 RETVAL
2213
2214void
2215pipe2 (int flags = 0)
2216 PROTOTYPE: ;$
2217 PPCODE:
2218{
2219 int fd[2];
2220 int res;
2221
2222 if (flags)
2223#if HAVE_PIPE2
2224 res = pipe2 (fd, flags);
2225#else
2226 res = (errno = ENOSYS, -1);
2227#endif
2228 else
2229 res = pipe (fd);
2230
2231 if (!res)
2232 {
2233 EXTEND (SP, 2);
2234 PUSHs (newmortalFH (fd[0], O_RDONLY));
2235 PUSHs (newmortalFH (fd[1], O_WRONLY));
2236 }
2237}
2238
2239void
2240eventfd (unsigned int initval = 0, int flags = 0)
2241 PPCODE:
2242{
2243 int fd;
2244#if HAVE_EVENTFD
2245 fd = eventfd (initval, flags);
2246#else
2247 fd = (errno = ENOSYS, -1);
2248#endif
2249
2250 XPUSHs (newmortalFH (fd, O_RDWR));
2251}
2252
2253void
2254timerfd_create (int clockid, int flags = 0)
2255 PPCODE:
2256{
2257 int fd;
2258#if HAVE_TIMERFD
2259 fd = timerfd_create (clockid, flags);
2260#else
2261 fd = (errno = ENOSYS, -1);
2262#endif
2263
2264 XPUSHs (newmortalFH (fd, O_RDWR));
2265}
2266
2267void
2268timerfd_settime (SV *fh, int flags, NV interval, NV value)
2269 PPCODE:
2270{
2271 int fd = s_fileno_croak (fh, 0);
2272#if HAVE_TIMERFD
2273 int res;
2274 struct itimerspec its, ots;
2275
2276 ts_set (&its.it_interval, interval);
2277 ts_set (&its.it_value , value);
2278 res = timerfd_settime (fd, flags, &its, &ots);
2279
2280 if (!res)
2281 {
2282 EXTEND (SP, 2);
2283 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2284 PUSHs (newSVnv (ts_get (&ots.it_value)));
2285 }
2286#else
2287 errno = ENOSYS;
2288#endif
2289}
2290
2291void
2292timerfd_gettime (SV *fh)
2293 PPCODE:
2294{
2295 int fd = s_fileno_croak (fh, 0);
2296#if HAVE_TIMERFD
2297 int res;
2298 struct itimerspec ots;
2299 res = timerfd_gettime (fd, &ots);
2300
2301 if (!res)
2302 {
2303 EXTEND (SP, 2);
2304 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2305 PUSHs (newSVnv (ts_get (&ots.it_value)));
2306 }
2307#else
2308 errno = ENOSYS;
2309#endif
2310}
2311
2312UV
2313get_fdlimit ()
2314 CODE:
2315#if HAVE_RLIMITS
2316 struct rlimit rl;
2317 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2318 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2319#endif
2320 XSRETURN_UNDEF;
2321 OUTPUT:
2322 RETVAL
2323
2324void
2325min_fdlimit (UV limit = 0x7fffffffU)
2326 CODE:
2327{
2328#if HAVE_RLIMITS
2329 struct rlimit rl;
2330 rlim_t orig_rlim_max;
2331 UV bit;
2332
2333 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2334 goto fail;
2335
2336 if (rl.rlim_cur == RLIM_INFINITY)
2337 XSRETURN_YES;
2338
2339 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2340
2341 if (rl.rlim_cur < limit)
2342 {
2343 rl.rlim_cur = limit;
2344
2345 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2346 rl.rlim_max = rl.rlim_cur;
2347 }
2348
2349 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2350 XSRETURN_YES;
2351
2352 if (errno == EPERM)
2353 {
2354 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2355 /* our limit overflows a system-wide limit */
2356 /* try an adaptive algorithm, but do not lower the hardlimit */
2357 rl.rlim_max = 0;
2358 for (bit = 0x40000000U; bit; bit >>= 1)
2359 {
2360 rl.rlim_max |= bit;
2361 rl.rlim_cur = rl.rlim_max;
2362
2363 /* nevr decrease the hard limit */
2364 if (rl.rlim_max < orig_rlim_max)
2365 break;
2366
2367 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2368 rl.rlim_max &= ~bit; /* too high, remove bit again */
2369 }
2370
2371 /* now, raise the soft limit to the max permitted */
2372 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2373 {
2374 rl.rlim_cur = rl.rlim_max;
2375 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2376 errno = EPERM;
2377 }
2378 }
2379#endif
2380 fail:
2381 XSRETURN_UNDEF;
2382}
2383
2384void _on_next_submit (SV *cb)
2385 CODE:
2386 SvREFCNT_dec (on_next_submit);
2387 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2388
1323PROTOTYPES: DISABLE 2389PROTOTYPES: DISABLE
1324 2390
2391MODULE = IO::AIO PACKAGE = IO::AIO::WD
2392
2393BOOT:
2394{
2395 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2396 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2397}
2398
2399void
2400DESTROY (SV *self)
2401 CODE:
2402{
2403 aio_wd wd = SvAIO_WD (self);
2404#if HAVE_AT
2405 {
2406 SV *callback = &PL_sv_undef;
2407 dREQ; /* clobbers next_pri :/ */
2408 next_pri = req->pri; /* restore next_pri */
2409 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2410 req->type = EIO_WD_CLOSE;
2411 req->wd = wd;
2412 REQ_SEND;
2413 }
2414#else
2415 eio_wd_close_sync (wd);
2416#endif
2417}
2418
1325MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2419MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326 2420
1327void 2421void
1328cancel (aio_req_ornot req) 2422cancel (aio_req_ornot req)
1329 PROTOTYPE:
1330 CODE: 2423 CODE:
1331 req_cancel (req); 2424 eio_cancel (req);
1332 2425
1333void 2426void
1334cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2427cb (aio_req_ornot req, SV *callback = NO_INIT)
1335 CODE: 2428 PPCODE:
2429{
2430 if (GIMME_V != G_VOID)
2431 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2432
2433 if (items > 1)
2434 {
2435 SV *cb_cv = get_cb (callback);
2436
1336 SvREFCNT_dec (req->callback); 2437 SvREFCNT_dec (req->callback);
1337 req->callback = newSVsv (callback); 2438 req->callback = SvREFCNT_inc (cb_cv);
2439 }
2440}
1338 2441
1339MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2442MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1340 2443
1341void 2444void
1342add (aio_req grp, ...) 2445add (aio_req grp, ...)
1343 PPCODE: 2446 PPCODE:
1344{ 2447{
1345 int i; 2448 int i;
1346 aio_req req;
1347 2449
1348 if (grp->fd == 2) 2450 if (grp->int1 == 2)
1349 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2451 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1350 2452
1351 for (i = 1; i < items; ++i ) 2453 for (i = 1; i < items; ++i )
1352 { 2454 {
2455 aio_req req;
2456
1353 if (GIMME_V != G_VOID) 2457 if (GIMME_V != G_VOID)
1354 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2458 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1355 2459
1356 req = SvAIO_REQ (ST (i)); 2460 req = SvAIO_REQ (ST (i));
1357 2461
1358 if (req) 2462 if (req)
1359 { 2463 eio_grp_add (grp, req);
1360 ++grp->length;
1361 req->grp = grp;
1362
1363 req->grp_prev = 0;
1364 req->grp_next = grp->grp_first;
1365
1366 if (grp->grp_first)
1367 grp->grp_first->grp_prev = req;
1368
1369 grp->grp_first = req;
1370 }
1371 } 2464 }
1372} 2465}
2466
2467void
2468cancel_subs (aio_req_ornot req)
2469 CODE:
2470 req_cancel_subs (req);
1373 2471
1374void 2472void
1375result (aio_req grp, ...) 2473result (aio_req grp, ...)
1376 CODE: 2474 CODE:
1377{ 2475{
1378 int i; 2476 int i;
2477 AV *av;
2478
2479 grp->errorno = errno;
2480
1379 AV *av = newAV (); 2481 av = newAV ();
2482 av_extend (av, items - 1);
1380 2483
1381 for (i = 1; i < items; ++i ) 2484 for (i = 1; i < items; ++i )
1382 av_push (av, newSVsv (ST (i))); 2485 av_push (av, newSVsv (ST (i)));
1383 2486
1384 SvREFCNT_dec (grp->data); 2487 SvREFCNT_dec (grp->sv1);
1385 grp->data = (SV *)av; 2488 grp->sv1 = (SV *)av;
1386} 2489}
1387 2490
1388void 2491void
2492errno (aio_req grp, int errorno = errno)
2493 CODE:
2494 grp->errorno = errorno;
2495
2496void
1389feed_limit (aio_req grp, int limit) 2497limit (aio_req grp, int limit)
1390 CODE: 2498 CODE:
1391 grp->fd2 = limit; 2499 eio_grp_limit (grp, limit);
1392 aio_grp_feed (grp);
1393 2500
1394void 2501void
1395feed (aio_req grp, SV *callback=&PL_sv_undef) 2502feed (aio_req grp, SV *callback = &PL_sv_undef)
1396 CODE: 2503 CODE:
1397{ 2504{
1398 SvREFCNT_dec (grp->fh2); 2505 SvREFCNT_dec (grp->sv2);
1399 grp->fh2 = newSVsv (callback); 2506 grp->sv2 = newSVsv (callback);
2507 grp->feed = aio_grp_feed;
1400 2508
1401 if (grp->fd2 <= 0) 2509 if (grp->int2 <= 0)
1402 grp->fd2 = 2; 2510 grp->int2 = 2;
1403 2511
1404 aio_grp_feed (grp); 2512 eio_grp_limit (grp, grp->int2);
1405} 2513}
1406 2514

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