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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC vs.
Revision 1.262 by root, Sun Aug 12 05:21:35 2018 UTC

1#if __linux 1#include "libeio/xthread.h"
2# define _GNU_SOURCE
3#endif
4
5#define _REENTRANT 1
6 2
7#include <errno.h> 3#include <errno.h>
8 4
9#include "EXTERN.h" 5#include "EXTERN.h"
10#include "perl.h" 6#include "perl.h"
11#include "XSUB.h" 7#include "XSUB.h"
12 8
13#include "autoconf/config.h" 9#if !defined mg_findext
14 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
15#include <pthread.h> 11#endif
16 12
17#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
18#include <errno.h> 15#include <errno.h>
19#include <sys/time.h>
20#include <sys/select.h>
21#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
22#include <sys/stat.h> 18#include <sys/stat.h>
23#include <limits.h> 19#include <limits.h>
24#include <unistd.h>
25#include <fcntl.h> 20#include <fcntl.h>
26#include <signal.h>
27#include <sched.h> 21#include <sched.h>
28 22
29#if HAVE_SENDFILE 23#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30# if __linux
31# include <sys/sendfile.h>
32# elif __freebsd
33# include <sys/socket.h>
34# include <sys/uio.h> 24# include <sys/mman.h>
35# elif __hpux 25#endif
26
27/* the incompetent fool that created musl keeps __linux__, refuses
28 * to implement any linux standard apis, and also has no way to test
29 * for his broken iplementation. don't complain to me if this fails
30 * for you.
31 */
32#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
33# include <linux/fs.h>
34# ifdef FS_IOC_FIEMAP
35# include <linux/types.h>
36# include <linux/fiemap.h>
37# define HAVE_FIEMAP 1
38# endif
39#endif
40
41/* perl namespace pollution */
42#undef VERSION
43
44/* perl stupidly overrides readdir and maybe others */
45/* with thread-unsafe versions, imagine that :( */
46#undef readdir
47#undef opendir
48#undef closedir
49
50#ifdef _WIN32
51
52 // perl overrides all those nice libc functions
53
54 #undef malloc
55 #undef free
56 #undef open
57 #undef read
58 #undef write
59 #undef send
60 #undef recv
61 #undef stat
62 #undef lstat
63 #undef fstat
64 #undef truncate
65 #undef ftruncate
66 #undef open
67 #undef link
68 #undef close
69 #undef unlink
70 #undef mkdir
71 #undef rmdir
72 #undef rename
73 #undef lseek
74 #undef opendir
75 #undef readdir
76 #undef closedir
77 #undef chmod
78 #undef fchmod
79 #undef dup
80 #undef dup2
81 #undef abort
82 #undef pipe
83
84 #define EIO_STRUCT_STAT struct _stati64
85 #define EIO_STRUCT_STATI64
86
87#else
88
36# include <sys/socket.h> 89 #include <sys/time.h>
37# elif __solaris /* not yet */
38# include <sys/sendfile.h> 90 #include <sys/select.h>
91 #include <unistd.h>
92 #include <utime.h>
93 #include <signal.h>
94
95 #define EIO_STRUCT_STAT Stat_t
96
97#endif
98
99/*****************************************************************************/
100
101#if __GNUC__ >= 3
102# define expect(expr,value) __builtin_expect ((expr),(value))
103#else
104# define expect(expr,value) (expr)
105#endif
106
107#define expect_false(expr) expect ((expr) != 0, 0)
108#define expect_true(expr) expect ((expr) != 0, 1)
109
110/*****************************************************************************/
111
112#include "config.h"
113
114#if HAVE_ST_XTIMENSEC
115# define ATIMENSEC PL_statcache.st_atimensec
116# define MTIMENSEC PL_statcache.st_mtimensec
117# define CTIMENSEC PL_statcache.st_ctimensec
118#elif HAVE_ST_XTIMESPEC
119# define ATIMENSEC PL_statcache.st_atim.tv_nsec
120# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
121# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
122#else
123# define ATIMENSEC 0
124# define MTIMENSEC 0
125# define CTIMENSEC 0
126#endif
127
128#include "schmorp.h"
129
130#if HAVE_EVENTFD
131# include <sys/eventfd.h>
132#endif
133
134#if HAVE_TIMERFD
135# include <sys/timerfd.h>
136#endif
137
138#if HAVE_RLIMITS
139 #include <sys/time.h>
140 #include <sys/resource.h>
141#endif
142
143typedef SV SV8; /* byte-sv, used for argument-checking */
144typedef int aio_rfd; /* read file desriptor */
145typedef int aio_wfd; /* write file descriptor */
146
147static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
148
149#define EIO_REQ_MEMBERS \
150 SV *callback; \
151 SV *sv1, *sv2; \
152 SV *sv3, *sv4; \
153 STRLEN stroffset; \
154 SV *self;
155
156#define EIO_NO_WRAPPERS 1
157
158#include "libeio/eio.h"
159
160static int req_invoke (eio_req *req);
161#define EIO_FINISH(req) req_invoke (req)
162static void req_destroy (eio_req *grp);
163#define EIO_DESTROY(req) req_destroy (req)
164
165#include "libeio/eio.c"
166
167#if !HAVE_POSIX_FADVISE
168# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
169#endif
170
171#if !HAVE_POSIX_MADVISE
172# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
173#endif
174
175#ifndef MAP_ANONYMOUS
176# ifdef MAP_ANON
177# define MAP_ANONYMOUS MAP_ANON
39# else 178# else
40# error sendfile support requested but not available 179# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41# endif 180# endif
42#endif 181#endif
43 182
44/* used for struct dirent, AIX doesn't provide it */ 183#ifndef makedev
45#ifndef NAME_MAX 184# define makedev(maj,min) (((maj) << 8) | (min))
46# define NAME_MAX 4096
47#endif 185#endif
186#ifndef major
187# define major(dev) ((dev) >> 8)
188#endif
189#ifndef minor
190# define minor(dev) ((dev) & 0xff)
191#endif
48 192
49#if __ia64 193#if PAGESIZE <= 0
50# define STACKSIZE 65536 194# define PAGESIZE sysconf (_SC_PAGESIZE)
51#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 195#endif
52# define STACKSIZE PTHREAD_STACK_MIN 196
197/*****************************************************************************/
198
199#if !_POSIX_MAPPED_FILES
200# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
201# define munmap(addr,length) EIO_ENOSYS ()
202#endif
203
204#if !_POSIX_MEMORY_PROTECTION
205# define mprotect(addr,len,prot) EIO_ENOSYS ()
206#endif
207
208#if !MREMAP_MAYMOVE
209# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
210#endif
211
212#define FOREIGN_MAGIC PERL_MAGIC_ext
213
214static int ecb_cold
215mmap_free (pTHX_ SV *sv, MAGIC *mg)
216{
217 int old_errno = errno;
218 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
219 errno = old_errno;
220
221 mg->mg_obj = 0; /* just in case */
222
223 SvREADONLY_off (sv);
224
225 if (SvPVX (sv) != mg->mg_ptr)
226 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
227
228 SvCUR_set (sv, 0);
229 SvPVX (sv) = 0;
230 SvOK_off (sv);
231
232 return 0;
233}
234
235static MGVTBL mmap_vtbl = {
236 0, 0, 0, 0, mmap_free
237};
238
239static int ecb_cold
240sysfree_free (pTHX_ SV *sv, MAGIC *mg)
241{
242 free (mg->mg_ptr);
243 mg->mg_obj = 0; /* just in case */
244
245 SvREADONLY_off (sv);
246
247 if (SvPVX (sv) != mg->mg_ptr)
248 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
249
250 SvCUR_set (sv, 0);
251 SvPVX (sv) = 0;
252 SvOK_off (sv);
253
254 return 0;
255}
256
257static MGVTBL sysfree_vtbl = {
258 0, 0, 0, 0, sysfree_free
259};
260
261/*****************************************************************************/
262
263/* helper: set scalar to foreign ptr with custom free */
264static void
265sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
266{
267 sv_force_normal (sv);
268
269 /* we store the length in mg_obj, as namlen is I32 :/ */
270 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
271 ->mg_obj = (SV *)length;
272
273 SvUPGRADE (sv, SVt_PV); /* nop... */
274
275 if (SvLEN (sv))
276 Safefree (SvPVX (sv));
277
278 SvPVX (sv) = (char *)addr;
279 SvCUR_set (sv, length);
280 SvLEN_set (sv, 0);
281 SvPOK_only (sv);
282}
283
284static void
285sv_clear_foreign (SV *sv)
286{
287 /* todo: iterate over magic and only free ours, but of course */
288 /* the perl5porters will call that (correct) behaviour buggy */
289 sv_unmagic (sv, FOREIGN_MAGIC);
290}
291
292/*****************************************************************************/
293
294/* defines all sorts of constants to 0 unless they are already defined */
295/* also provides const_iv_ and const_niv_ macros for them */
296#include "def0.h"
297
298/*****************************************************************************/
299
300static void
301fiemap (eio_req *req)
302{
303 req->result = -1;
304
305#if HAVE_FIEMAP
306 /* assume some c99 */
307 struct fiemap *fiemap = 0;
308 size_t end_offset;
309 int count = req->int3;
310
311 req->flags |= EIO_FLAG_PTR1_FREE;
312
313 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
314 /* increase in 3.5kb steps */
315 if (count < 0)
316 count = 8;
317
318 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
319 errno = ENOMEM;
320 if (!fiemap)
321 return;
322
323 req->ptr1 = fiemap;
324
325 fiemap->fm_start = req->offs;
326 fiemap->fm_length = req->size;
327 fiemap->fm_flags = req->int2;
328 fiemap->fm_extent_count = count;
329
330 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
331 return;
332
333 if (req->int3 >= 0 /* not autosizing */
334 || !fiemap->fm_mapped_extents /* no more extents */
335 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
336 goto done;
337
338 /* else we have to loop -
339 * it would be tempting (actually I tried that first) to just query the
340 * number of extents needed, but linux often feels like not returning all
341 * extents, without telling us it left any out. this complicates
342 * this quite a bit.
343 */
344
345 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
346
347 for (;;)
348 {
349 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
350 char scratch[3072];
351 struct fiemap *incmap = (struct fiemap *)scratch;
352
353 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
354 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
355 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
356 incmap->fm_flags = fiemap->fm_flags;
357 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
358
359 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
360 return;
361
362 if (!incmap->fm_mapped_extents)
363 goto done;
364
365 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
366 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
367 errno = ENOMEM;
368 if (!fiemap)
369 return;
370
371 req->ptr1 = fiemap;
372
373 for (count = 0; count < incmap->fm_mapped_extents; ++count)
374 {
375 struct fiemap_extent *e = incmap->fm_extents + count;
376
377 if (e->fe_logical + e->fe_length >= end_offset)
378 goto done;
379
380 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
381
382 if (e->fe_flags & FIEMAP_EXTENT_LAST)
383 goto done;
384
385 }
386 }
387
388done:
389 req->result = 0;
390
53#else 391#else
54# define STACKSIZE 16384 392 errno = ENOSYS;
55#endif 393#endif
394}
56 395
57/* buffer size for various temporary buffers */ 396/*****************************************************************************/
58#define AIO_BUFSIZE 65536
59
60#define dBUF \
61 char *aio_buf = malloc (AIO_BUFSIZE); \
62 if (!aio_buf) \
63 return -1;
64
65#define fBUF free (aio_buf)
66 397
67enum { 398enum {
68 REQ_QUIT, 399 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
69 REQ_OPEN, REQ_CLOSE,
70 REQ_READ, REQ_WRITE, REQ_READAHEAD,
71 REQ_SENDFILE,
72 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73 REQ_FSYNC, REQ_FDATASYNC,
74 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75 REQ_READDIR,
76 REQ_LINK, REQ_SYMLINK,
77 REQ_GROUP, REQ_NOP,
78 REQ_SLEEP,
79}; 400};
80 401
81#define AIO_REQ_KLASS "IO::AIO::REQ"
82#define AIO_GRP_KLASS "IO::AIO::GRP"
83
84typedef struct aio_cb
85{
86 struct aio_cb *volatile next;
87
88 SV *data, *callback;
89 SV *fh, *fh2;
90 void *dataptr, *data2ptr;
91 Stat_t *statdata;
92 off_t offset;
93 size_t length;
94 ssize_t result;
95
96 STRLEN dataoffset;
97 int type;
98 int fd, fd2;
99 int errorno;
100 mode_t mode; /* open */
101
102 unsigned char flags;
103 unsigned char pri;
104
105 SV *self; /* the perl counterpart of this request, if any */
106 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107} aio_cb;
108
109enum {
110 FLAG_CANCELLED = 0x01,
111};
112
113typedef aio_cb *aio_req; 402typedef eio_req *aio_req;
114typedef aio_cb *aio_req_ornot; 403typedef eio_req *aio_req_ornot;
404typedef eio_wd aio_wd;
115 405
116enum { 406static SV *on_next_submit;
117 PRI_MIN = -4, 407static int next_pri = EIO_PRI_DEFAULT;
118 PRI_MAX = 4,
119
120 DEFAULT_PRI = 0,
121 PRI_BIAS = -PRI_MIN,
122};
123
124static int next_pri = DEFAULT_PRI + PRI_BIAS;
125
126static int started, wanted;
127static volatile int nreqs;
128static int max_outstanding = 1<<30; 408static int max_outstanding;
129static int respipe [2];
130 409
131#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 410static s_epipe respipe;
132# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133#else
134# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135#endif
136 411
137static pthread_mutex_t reslock = AIO_MUTEX_INIT; 412static void req_destroy (aio_req req);
138static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141static volatile aio_req reqs, reqe; /* queue start, queue end */
142static volatile aio_req ress, rese; /* queue start, queue end */
143
144static void req_invoke (aio_req req); 413static void req_cancel (aio_req req);
145static void req_free (aio_req req); 414
415static void
416want_poll (void)
417{
418 /* write a dummy byte to the pipe so fh becomes ready */
419 s_epipe_signal (&respipe);
420}
421
422static void
423done_poll (void)
424{
425 /* read any signals sent by the worker threads */
426 s_epipe_drain (&respipe);
427}
146 428
147/* must be called at most once */ 429/* must be called at most once */
148static SV *req_sv (aio_req req, const char *klass) 430static SV *
431req_sv (aio_req req, HV *stash)
149{ 432{
150 if (!req->self) 433 if (!req->self)
151 { 434 {
152 req->self = (SV *)newHV (); 435 req->self = (SV *)newHV ();
153 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 436 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
154 } 437 }
155 438
156 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 439 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
157} 440}
158 441
159static aio_req SvAIO_REQ (SV *sv) 442static SV *
443newSVaio_wd (aio_wd wd)
444{
445 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
446}
447
448static aio_req
449SvAIO_REQ (SV *sv)
160{ 450{
161 MAGIC *mg; 451 MAGIC *mg;
162 452
163 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 453 if (!SvROK (sv)
454 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
455 || (SvSTASH (SvRV (sv)) != aio_grp_stash
456 && SvSTASH (SvRV (sv)) != aio_req_stash
457 && !sv_derived_from (sv, "IO::AIO::REQ")))
164 croak ("object of class " AIO_REQ_KLASS " expected"); 458 croak ("object of class IO::AIO::REQ expected");
165 459
166 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 460 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
167 461
168 return mg ? (aio_req)mg->mg_ptr : 0; 462 return mg ? (aio_req)mg->mg_ptr : 0;
169} 463}
170 464
465static aio_wd
466SvAIO_WD (SV *sv)
467{
468 if (!SvROK (sv)
469 || SvTYPE (SvRV (sv)) != SVt_PVMG
470 || SvSTASH (SvRV (sv)) != aio_wd_stash)
471 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
472
473 return (aio_wd)(long)SvIVX (SvRV (sv));
474}
475
476static SV *
477newmortalFH (int fd, int flags)
478{
479 if (fd < 0)
480 return &PL_sv_undef;
481
482 GV *gv = (GV *)sv_newmortal ();
483 char sym[64];
484 int symlen;
485
486 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
487 gv_init (gv, aio_stash, sym, symlen, 0);
488
489 symlen = snprintf (
490 sym,
491 sizeof (sym),
492 "%s&=%d",
493 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
494 fd
495 );
496
497 return do_open (gv, sym, symlen, 0, 0, 0, 0)
498 ? (SV *)gv : &PL_sv_undef;
499}
500
501static void
171static void aio_grp_feed (aio_req grp) 502aio_grp_feed (aio_req grp)
172{ 503{
173 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 504 if (grp->sv2 && SvOK (grp->sv2))
174 { 505 {
175 int old_len = grp->length; 506 dSP;
176 507
177 if (grp->fh2 && SvOK (grp->fh2)) 508 ENTER;
509 SAVETMPS;
510 PUSHMARK (SP);
511 XPUSHs (req_sv (grp, aio_grp_stash));
512 PUTBACK;
513 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
514 SPAGAIN;
515 FREETMPS;
516 LEAVE;
517 }
518}
519
520static void
521req_submit (eio_req *req)
522{
523 eio_submit (req);
524
525 if (expect_false (on_next_submit))
526 {
527 dSP;
528 SV *cb = sv_2mortal (on_next_submit);
529
530 on_next_submit = 0;
531
532 PUSHMARK (SP);
533 PUTBACK;
534 call_sv (cb, G_DISCARD | G_EVAL);
535 }
536}
537
538static int
539req_invoke (eio_req *req)
540{
541 if (req->flags & FLAG_SV2_RO_OFF)
542 SvREADONLY_off (req->sv2);
543
544 if (!EIO_CANCELLED (req) && req->callback)
545 {
546 dSP;
547 static SV *sv_result_cache; /* caches the result integer SV */
548 SV *sv_result;
549
550 ENTER;
551 SAVETMPS;
552 PUSHMARK (SP);
553 EXTEND (SP, 1);
554
555 /* do not recreate the result IV from scratch each time */
556 if (expect_true (sv_result_cache))
178 { 557 {
179 dSP; 558 sv_result = sv_result_cache; sv_result_cache = 0;
180 559 SvIV_set (sv_result, req->result);
181 ENTER; 560 SvIOK_only (sv_result);
182 SAVETMPS;
183 PUSHMARK (SP);
184 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185 PUTBACK;
186 call_sv (grp->fh2, G_VOID | G_EVAL);
187 SPAGAIN;
188 FREETMPS;
189 LEAVE;
190 } 561 }
191 562 else
192 /* stop if no progress has been made */
193 if (old_len == grp->length)
194 { 563 {
195 SvREFCNT_dec (grp->fh2); 564 sv_result = newSViv (req->result);
196 grp->fh2 = 0; 565 SvREADONLY_on (sv_result);
197 break;
198 } 566 }
567
568 switch (req->type)
569 {
570 case EIO_WD_OPEN:
571 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
572 break;
573
574 case EIO_READDIR:
575 {
576 SV *rv = &PL_sv_undef;
577
578 if (req->result >= 0)
579 {
580 int i;
581 char *names = (char *)req->ptr2;
582 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
583 AV *av = newAV ();
584
585 av_extend (av, req->result - 1);
586
587 for (i = 0; i < req->result; ++i)
588 {
589 if (req->int1 & EIO_READDIR_DENTS)
590 {
591 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
592
593 if (req->int1 & EIO_READDIR_CUSTOM2)
594 {
595 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
596 AV *avent = newAV ();
597
598 av_extend (avent, 2);
599
600 if (!sv_type [ent->type])
601 {
602 sv_type [ent->type] = newSViv (ent->type);
603 SvREADONLY_on (sv_type [ent->type]);
604 }
605
606 av_store (avent, 0, namesv);
607 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
608 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
609
610 av_store (av, i, newRV_noinc ((SV *)avent));
611 }
612 else
613 av_store (av, i, namesv);
614
615 ++ent;
616 }
617 else
618 {
619 SV *name = newSVpv (names, 0);
620 av_store (av, i, name);
621 names += SvCUR (name) + 1;
622 }
623 }
624
625 rv = sv_2mortal (newRV_noinc ((SV *)av));
626 }
627
628 PUSHs (rv);
629
630 if (req->int1 & EIO_READDIR_CUSTOM1)
631 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
632 }
633 break;
634
635 case EIO_OPEN:
636 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
637 break;
638
639 case EIO_STATVFS:
640 case EIO_FSTATVFS:
641 {
642 SV *rv = &PL_sv_undef;
643
644#ifndef _WIN32
645 if (req->result >= 0)
646 {
647 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
648 HV *hv = newHV ();
649 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
650 * chooses to make it a struct.
651 */
652 unsigned long fsid = 0;
653 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
654
655 rv = sv_2mortal (newRV_noinc ((SV *)hv));
656
657 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
658 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
659 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
660 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
661 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
662 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
663 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
664 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
665 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
666 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
667 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
668 }
669#endif
670
671 PUSHs (rv);
672 }
673
674 break;
675
676 case EIO_GROUP:
677 req->int1 = 2; /* mark group as finished */
678
679 if (req->sv1)
680 {
681 int i;
682 AV *av = (AV *)req->sv1;
683
684 EXTEND (SP, AvFILL (av) + 1);
685 for (i = 0; i <= AvFILL (av); ++i)
686 PUSHs (*av_fetch (av, i, 0));
687 }
688 break;
689
690 case EIO_NOP:
691 case EIO_BUSY:
692 break;
693
694 case EIO_READLINK:
695 case EIO_REALPATH:
696 if (req->result > 0)
697 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
698 break;
699
700 case EIO_STAT:
701 case EIO_LSTAT:
702 case EIO_FSTAT:
703 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
704
705 if (!(PL_laststatval = req->result))
706 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
707 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
708
709 PUSHs (sv_result);
710 break;
711
712 case EIO_SEEK:
713 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
714 break;
715
716 case EIO_READ:
717 {
718 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
719 *SvEND (req->sv2) = 0;
720 SvPOK_only (req->sv2);
721 SvSETMAGIC (req->sv2);
722 PUSHs (sv_result);
723 }
724 break;
725
726 case EIO_SLURP:
727 {
728 if (req->result >= 0)
729 {
730 /* if length was originally not known, we steal the malloc'ed memory */
731 if (req->flags & EIO_FLAG_PTR2_FREE)
732 {
733 req->flags &= ~EIO_FLAG_PTR2_FREE;
734 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
735 }
736 else
737 {
738 SvCUR_set (req->sv2, req->result);
739 *SvEND (req->sv2) = 0;
740 SvPOK_only (req->sv2);
741 }
742
743 SvSETMAGIC (req->sv2);
744 }
745
746 PUSHs (sv_result);
747 }
748 break;
749
750 case EIO_CUSTOM:
751 if (req->feed == fiemap)
752 {
753#if HAVE_FIEMAP
754 if (!req->result)
755 {
756 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
757
758 if (fiemap->fm_extent_count)
759 {
760 AV *av = newAV ();
761 int i;
762
763 while (fiemap->fm_mapped_extents)
764 {
765 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
766 AV *ext_av = newAV ();
767
768 av_store (ext_av, 3, newSVuv (extent->fe_flags));
769 av_store (ext_av, 2, newSVval64 (extent->fe_length));
770 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
771 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
772
773 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
774 }
775
776 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
777 }
778 else
779 {
780 SvIV_set (sv_result, fiemap->fm_mapped_extents);
781 PUSHs (sv_result);
782 }
783 }
784#endif
785 }
786 else
787 PUSHs (sv_result);
788 break;
789
790 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
791 if (req->result > 0)
792 SvIV_set (sv_result, 0);
793 /* FALLTHROUGH */
794
795 default:
796 PUSHs (sv_result);
797 break;
798 }
799
800 errno = req->errorno;
801
802 PUTBACK;
803 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
804 SPAGAIN;
805
806 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
807 SvREFCNT_dec (sv_result);
808 else
809 sv_result_cache = sv_result;
810
811 FREETMPS;
812 LEAVE;
813
814 PUTBACK;
199 } 815 }
200}
201 816
202static void aio_grp_dec (aio_req grp) 817 return !!SvTRUE (ERRSV);
203{
204 --grp->length;
205
206 /* call feeder, if applicable */
207 aio_grp_feed (grp);
208
209 /* finish, if done */
210 if (!grp->length && grp->fd)
211 {
212 req_invoke (grp);
213 req_free (grp);
214 }
215} 818}
216 819
217static void poll_wait () 820static void
821req_destroy (aio_req req)
218{ 822{
219 fd_set rfd;
220
221 while (nreqs)
222 {
223 aio_req req;
224#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225 pthread_mutex_lock (&reslock);
226#endif
227 req = ress;
228#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229 pthread_mutex_unlock (&reslock);
230#endif
231
232 if (req)
233 return;
234
235 FD_ZERO(&rfd);
236 FD_SET(respipe [0], &rfd);
237
238 select (respipe [0] + 1, &rfd, 0, 0, 0);
239 }
240}
241
242static void req_invoke (aio_req req)
243{
244 dSP;
245 int errorno = errno;
246
247 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248 return;
249
250 errno = req->errorno;
251
252 ENTER;
253 SAVETMPS;
254 PUSHMARK (SP);
255 EXTEND (SP, 1);
256
257 switch (req->type)
258 {
259 case REQ_READDIR:
260 {
261 SV *rv = &PL_sv_undef;
262
263 if (req->result >= 0)
264 {
265 char *buf = req->data2ptr;
266 AV *av = newAV ();
267
268 while (req->result)
269 {
270 SV *sv = newSVpv (buf, 0);
271
272 av_push (av, sv);
273 buf += SvCUR (sv) + 1;
274 req->result--;
275 }
276
277 rv = sv_2mortal (newRV_noinc ((SV *)av));
278 }
279
280 PUSHs (rv);
281 }
282 break;
283
284 case REQ_OPEN:
285 {
286 /* convert fd to fh */
287 SV *fh;
288
289 PUSHs (sv_2mortal (newSViv (req->result)));
290 PUTBACK;
291 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292 SPAGAIN;
293
294 fh = SvREFCNT_inc (POPs);
295
296 PUSHMARK (SP);
297 XPUSHs (sv_2mortal (fh));
298 }
299 break;
300
301 case REQ_GROUP:
302 req->fd = 2; /* mark group as finished */
303
304 if (req->data)
305 {
306 int i;
307 AV *av = (AV *)req->data;
308
309 EXTEND (SP, AvFILL (av) + 1);
310 for (i = 0; i <= AvFILL (av); ++i)
311 PUSHs (*av_fetch (av, i, 0));
312 }
313 break;
314
315 case REQ_NOP:
316 case REQ_SLEEP:
317 break;
318
319 default:
320 PUSHs (sv_2mortal (newSViv (req->result)));
321 break;
322 }
323
324
325 PUTBACK;
326 call_sv (req->callback, G_VOID | G_EVAL);
327 SPAGAIN;
328
329 FREETMPS;
330 LEAVE;
331
332 errno = errorno;
333
334 if (SvTRUE (ERRSV))
335 {
336 req_free (req);
337 croak (0);
338 }
339}
340
341static void req_free (aio_req req)
342{
343 if (req->grp)
344 {
345 aio_req grp = req->grp;
346
347 /* unlink request */
348 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351 if (grp->grp_first == req)
352 grp->grp_first = req->grp_next;
353
354 aio_grp_dec (grp);
355 }
356
357 if (req->self) 823 if (req->self)
358 { 824 {
359 sv_unmagic (req->self, PERL_MAGIC_ext); 825 sv_unmagic (req->self, PERL_MAGIC_ext);
360 SvREFCNT_dec (req->self); 826 SvREFCNT_dec (req->self);
361 } 827 }
362 828
363 SvREFCNT_dec (req->data);
364 SvREFCNT_dec (req->fh); 829 SvREFCNT_dec (req->sv1);
365 SvREFCNT_dec (req->fh2); 830 SvREFCNT_dec (req->sv2);
831 SvREFCNT_dec (req->sv3);
832 SvREFCNT_dec (req->sv4);
366 SvREFCNT_dec (req->callback); 833 SvREFCNT_dec (req->callback);
367 Safefree (req->statdata);
368 834
369 if (req->type == REQ_READDIR && req->result >= 0)
370 free (req->data2ptr);
371
372 Safefree (req); 835 free (req);
373} 836}
374 837
375static void req_cancel (aio_req req) 838static void
839req_cancel_subs (aio_req grp)
376{ 840{
377 req->flags |= FLAG_CANCELLED;
378
379 if (req->type == REQ_GROUP) 841 if (grp->type != EIO_GROUP)
842 return;
843
844 SvREFCNT_dec (grp->sv2);
845 grp->sv2 = 0;
846
847 eio_grp_cancel (grp);
848}
849
850static void ecb_cold
851create_respipe (void)
852{
853 if (s_epipe_renew (&respipe))
854 croak ("IO::AIO: unable to initialize result pipe");
855}
856
857static void
858poll_wait (void)
859{
860 while (eio_nreqs ())
380 { 861 {
381 aio_req sub; 862 int size;
382 863
383 for (sub = req->grp_first; sub; sub = sub->grp_next) 864 X_LOCK (EIO_POOL->reslock);
384 req_cancel (sub); 865 size = EIO_POOL->res_queue.size;
866 X_UNLOCK (EIO_POOL->reslock);
867
868 if (size)
869 return;
870
871 etp_maybe_start_thread (EIO_POOL);
872
873 s_epipe_wait (&respipe);
385 } 874 }
386} 875}
387 876
388static int poll_cb () 877static int
878poll_cb (void)
389{ 879{
390 dSP;
391 int count = 0;
392 int do_croak = 0;
393 aio_req req;
394
395 for (;;) 880 for (;;)
396 { 881 {
397 pthread_mutex_lock (&reslock); 882 int res = eio_poll ();
398 req = ress;
399 883
400 if (req) 884 if (res > 0)
885 croak (0);
886
887 if (!max_outstanding || max_outstanding > eio_nreqs ())
888 return res;
889
890 poll_wait ();
891 }
892}
893
894static void ecb_cold
895reinit (void)
896{
897 create_respipe ();
898
899 if (eio_init (want_poll, done_poll) < 0)
900 croak ("IO::AIO: unable to initialise eio library");
901}
902
903/*****************************************************************************/
904
905static SV *
906get_cb (SV *cb_sv)
907{
908 SvGETMAGIC (cb_sv);
909 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
910}
911
912static aio_req ecb_noinline
913dreq (SV *callback)
914{
915 SV *cb_cv;
916 aio_req req;
917 int req_pri = next_pri;
918 next_pri = EIO_PRI_DEFAULT;
919
920 cb_cv = get_cb (callback);
921
922 req = calloc (sizeof (*req), 1);
923 if (!req)
924 croak ("out of memory during eio_req allocation");
925
926 req->callback = SvREFCNT_inc (cb_cv);
927 req->pri = req_pri;
928
929 return req;
930}
931
932#define dREQ \
933 aio_req req = dreq (callback); \
934
935#define REQ_SEND \
936 PUTBACK; \
937 req_submit (req); \
938 SPAGAIN; \
939 \
940 if (GIMME_V != G_VOID) \
941 XPUSHs (req_sv (req, aio_req_stash));
942
943ecb_inline void
944req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
945{
946 if (expect_false (SvROK (path)))
947 {
948 SV *rv = SvRV (path);
949 SV *wdob;
950
951 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
401 { 952 {
402 ress = req->next; 953 path = AvARRAY (rv)[1];
954 wdob = AvARRAY (rv)[0];
403 955
404 if (!ress) 956 if (SvOK (wdob))
405 { 957 {
406 /* read any signals sent by the worker threads */ 958 *wd = SvAIO_WD (wdob);
407 char buf [32]; 959 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
408 while (read (respipe [0], buf, 32) == 32)
409 ;
410
411 rese = 0;
412 } 960 }
961 else
962 *wd = EIO_INVALID_WD;
413 } 963 }
414 964 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
415 pthread_mutex_unlock (&reslock);
416
417 if (!req)
418 break;
419
420 --nreqs;
421
422 if (req->type == REQ_QUIT)
423 started--;
424 else if (req->type == REQ_GROUP && req->length)
425 { 965 {
426 req->fd = 1; /* mark request as delayed */ 966 *wd = (aio_wd)(long)SvIVX (rv);
427 continue; 967 *wdsv = SvREFCNT_inc_NN (rv);
968 *ptr = ".";
969 return; /* path set to "." */
428 } 970 }
429 else 971 else
430 { 972 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
431 if (req->type == REQ_READ)
432 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435 SvREADONLY_off (req->data);
436
437 if (req->statdata)
438 {
439 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440 PL_laststatval = req->result;
441 PL_statcache = *(req->statdata);
442 }
443
444 req_invoke (req);
445
446 count++;
447 }
448
449 req_free (req);
450 } 973 }
451 974
452 return count; 975 *pathsv = newSVsv (path);
976 *ptr = SvPVbyte_nolen (*pathsv);
453} 977}
454 978
455static void *aio_proc(void *arg); 979static void ecb_noinline
456 980req_set_path1 (aio_req req, SV *path)
457static void start_thread (void)
458{ 981{
459 sigset_t fullsigset, oldsigset; 982 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
460 pthread_t tid;
461 pthread_attr_t attr;
462
463 pthread_attr_init (&attr);
464 pthread_attr_setstacksize (&attr, STACKSIZE);
465 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467 sigfillset (&fullsigset);
468 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471 started++;
472
473 sigprocmask (SIG_SETMASK, &oldsigset, 0);
474} 983}
475 984
476static void req_send (aio_req req) 985static void ecb_noinline
986req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
477{ 987{
478 while (started < wanted && nreqs >= started) 988 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
479 start_thread ();
480 989
481 ++nreqs; 990 switch (SvTYPE (rv))
482
483 pthread_mutex_lock (&reqlock);
484
485 req->next = 0;
486
487 if (reqe)
488 { 991 {
489 reqe->next = req; 992 case SVt_PVIO:
490 reqe = req; 993 case SVt_PVLV:
994 case SVt_PVGV:
995 req->type = type_fh;
996 req->sv1 = newSVsv (fh_or_path);
997 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
998 break;
999
1000 default:
1001 req->type = type_path;
1002 req_set_path1 (req, fh_or_path);
1003 break;
491 } 1004 }
492 else
493 reqe = reqs = req;
494
495 pthread_cond_signal (&reqwait);
496 pthread_mutex_unlock (&reqlock);
497
498 if (nreqs > max_outstanding)
499 for (;;)
500 {
501 poll_cb ();
502
503 if (nreqs <= max_outstanding)
504 break;
505
506 poll_wait ();
507 }
508}
509
510static void end_thread (void)
511{
512 aio_req req;
513 Newz (0, req, 1, aio_cb);
514 req->type = REQ_QUIT;
515
516 req_send (req);
517}
518
519static void min_parallel (int nthreads)
520{
521 if (wanted < nthreads)
522 wanted = nthreads;
523}
524
525static void max_parallel (int nthreads)
526{
527 int cur = started;
528
529 if (wanted > nthreads)
530 wanted = nthreads;
531
532 while (cur > wanted)
533 {
534 end_thread ();
535 cur--;
536 }
537
538 while (started > wanted)
539 {
540 poll_wait ();
541 poll_cb ();
542 }
543}
544
545static void create_pipe ()
546{
547 if (pipe (respipe))
548 croak ("unable to initialize result pipe");
549
550 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551 croak ("cannot set result pipe to nonblocking mode");
552
553 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554 croak ("cannot set result pipe to nonblocking mode");
555} 1005}
556 1006
557/*****************************************************************************/ 1007/*****************************************************************************/
558/* work around various missing functions */
559 1008
560#if !HAVE_PREADWRITE 1009static void
561# define pread aio_pread 1010ts_set (struct timespec *ts, NV value)
562# define pwrite aio_pwrite
563
564/*
565 * make our pread/pwrite safe against themselves, but not against
566 * normal read/write by using a mutex. slows down execution a lot,
567 * but that's your problem, not mine.
568 */
569static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
570
571static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572{ 1011{
573 ssize_t res; 1012 ts->tv_sec = value;
574 off_t ooffset; 1013 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
575
576 pthread_mutex_lock (&preadwritelock);
577 ooffset = lseek (fd, 0, SEEK_CUR);
578 lseek (fd, offset, SEEK_SET);
579 res = read (fd, buf, count);
580 lseek (fd, ooffset, SEEK_SET);
581 pthread_mutex_unlock (&preadwritelock);
582
583 return res;
584} 1014}
585 1015
586static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1016static NV
1017ts_get (const struct timespec *ts)
587{ 1018{
588 ssize_t res; 1019 return ts->tv_sec + ts->tv_nsec * 1e-9;
589 off_t ooffset;
590
591 pthread_mutex_lock (&preadwritelock);
592 ooffset = lseek (fd, 0, SEEK_CUR);
593 lseek (fd, offset, SEEK_SET);
594 res = write (fd, buf, count);
595 lseek (fd, offset, SEEK_SET);
596 pthread_mutex_unlock (&preadwritelock);
597
598 return res;
599} 1020}
600#endif
601 1021
602#if !HAVE_FDATASYNC 1022/*****************************************************************************/
603# define fdatasync fsync
604#endif
605 1023
606#if !HAVE_READAHEAD 1024XS(boot_IO__AIO) ecb_cold;
607# define readahead aio_readahead
608 1025
609static ssize_t readahead (int fd, off_t offset, size_t count) 1026MODULE = IO::AIO PACKAGE = IO::AIO
610{
611 dBUF;
612 1027
613 while (count > 0) 1028PROTOTYPES: ENABLE
614 {
615 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616 1029
617 pread (fd, aio_buf, len, offset); 1030BOOT:
618 offset += len;
619 count -= len;
620 }
621
622 fBUF;
623
624 errno = 0;
625}
626#endif
627
628#if !HAVE_READDIR_R
629# define readdir_r aio_readdir_r
630
631static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
632
633static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634{ 1031{
635 struct dirent *e; 1032 static const struct {
636 int errorno; 1033 const char *name;
1034 IV iv;
1035 } *civ, const_iv[] = {
1036# define const_niv(name, value) { # name, (IV) value },
1037# define const_iv(name) { # name, (IV) name },
1038# define const_eio(name) { # name, (IV) EIO_ ## name },
637 1039
638 pthread_mutex_lock (&readdirlock); 1040 /* you have to re-run ./gendef0 after adding/removing any constants here */
1041 /* the first block can be undef if missing */
1042 const_iv (ENOSYS)
1043 const_iv (EXDEV)
1044 const_iv (EBADR)
639 1045
640 e = readdir (dirp); 1046 /* for lseek */
641 errorno = errno; 1047 const_iv (SEEK_DATA)
1048 const_iv (SEEK_HOLE)
642 1049
643 if (e) 1050 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
644 { 1051 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
645 *res = ent; 1052 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
646 strcpy (ent->d_name, e->d_name); 1053 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
647 } 1054 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
648 else 1055 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
649 *res = 0;
650 1056
651 pthread_mutex_unlock (&readdirlock); 1057 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1058 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1059 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1060 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1061 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
652 1062
653 errno = errorno; 1063 /* the second block will be 0 when missing */
654 return e ? 0 : -1; 1064 const_iv (O_ACCMODE)
655}
656#endif
657 1065
658/* sendfile always needs emulation */ 1066 const_iv (O_RDONLY)
659static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1067 const_iv (O_WRONLY)
660{ 1068 const_iv (O_RDWR)
661 ssize_t res; 1069 const_iv (O_CREAT)
1070 const_iv (O_TRUNC)
1071 const_iv (O_EXCL)
1072 const_iv (O_APPEND)
662 1073
663 if (!count) 1074 const_iv (O_ASYNC)
664 return 0; 1075 const_iv (O_DIRECT)
1076 const_iv (O_NOATIME)
665 1077
666#if HAVE_SENDFILE 1078 const_iv (O_CLOEXEC)
667# if __linux 1079 const_iv (O_NOCTTY)
668 res = sendfile (ofd, ifd, &offset, count); 1080 const_iv (O_NOFOLLOW)
1081 const_iv (O_NONBLOCK)
1082 const_iv (O_EXEC)
1083 const_iv (O_SEARCH)
1084 const_iv (O_DIRECTORY)
1085 const_iv (O_DSYNC)
1086 const_iv (O_RSYNC)
1087 const_iv (O_SYNC)
1088 const_iv (O_PATH)
1089 const_iv (O_TMPFILE)
1090 const_iv (O_TTY_INIT)
669 1091
670# elif __freebsd 1092 const_iv (S_IFIFO)
671 /* 1093 const_iv (S_IFCHR)
672 * Of course, the freebsd sendfile is a dire hack with no thoughts 1094 const_iv (S_IFBLK)
673 * wasted on making it similar to other I/O functions. 1095 const_iv (S_IFLNK)
674 */ 1096 const_iv (S_IFREG)
675 { 1097 const_iv (S_IFDIR)
676 off_t sbytes; 1098 const_iv (S_IFWHT)
677 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1099 const_iv (S_IFSOCK)
1100 const_iv (S_IFMT)
678 1101
679 if (res < 0 && sbytes) 1102 const_iv (ST_RDONLY)
680 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1103 const_iv (ST_NOSUID)
681 res = sbytes; 1104 const_iv (ST_NODEV)
1105 const_iv (ST_NOEXEC)
1106 const_iv (ST_SYNCHRONOUS)
1107 const_iv (ST_MANDLOCK)
1108 const_iv (ST_WRITE)
1109 const_iv (ST_APPEND)
1110 const_iv (ST_IMMUTABLE)
1111 const_iv (ST_NOATIME)
1112 const_iv (ST_NODIRATIME)
1113 const_iv (ST_RELATIME)
1114
1115 const_iv (PROT_NONE)
1116 const_iv (PROT_EXEC)
1117 const_iv (PROT_READ)
1118 const_iv (PROT_WRITE)
1119
1120 const_iv (MAP_PRIVATE)
1121 const_iv (MAP_SHARED)
1122 const_iv (MAP_FIXED)
1123 const_iv (MAP_ANONYMOUS)
1124
1125 /* linuxish */
1126 const_iv (MAP_LOCKED)
1127 const_iv (MAP_NORESERVE)
1128 const_iv (MAP_POPULATE)
1129 const_iv (MAP_NONBLOCK)
1130 const_iv (MAP_GROWSDOWN)
1131 const_iv (MAP_32BIT)
1132 const_iv (MAP_HUGETLB)
1133 const_iv (MAP_STACK)
1134
1135 const_iv (MREMAP_MAYMOVE)
1136 const_iv (MREMAP_FIXED)
1137
1138 const_iv (F_DUPFD_CLOEXEC)
1139
1140 const_iv (MSG_CMSG_CLOEXEC)
1141 const_iv (SOCK_CLOEXEC)
1142
1143 const_iv (F_OFD_GETLK)
1144 const_iv (F_OFD_SETLK)
1145 const_iv (F_OFD_GETLKW)
1146
1147 const_iv (FIFREEZE)
1148 const_iv (FITHAW)
1149 const_iv (FITRIM)
1150 const_iv (FICLONE)
1151 const_iv (FICLONERANGE)
1152 const_iv (FIDEDUPERANGE)
1153
1154 const_iv (FS_IOC_GETFLAGS)
1155 const_iv (FS_IOC_SETFLAGS)
1156 const_iv (FS_IOC_GETVERSION)
1157 const_iv (FS_IOC_SETVERSION)
1158 const_iv (FS_IOC_FIEMAP)
1159 const_iv (FS_IOC_FSGETXATTR)
1160 const_iv (FS_IOC_FSSETXATTR)
1161 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1162 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1163 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1164
1165 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1166
1167 const_iv (FS_SECRM_FL)
1168 const_iv (FS_UNRM_FL)
1169 const_iv (FS_COMPR_FL)
1170 const_iv (FS_SYNC_FL)
1171 const_iv (FS_IMMUTABLE_FL)
1172 const_iv (FS_APPEND_FL)
1173 const_iv (FS_NODUMP_FL)
1174 const_iv (FS_NOATIME_FL)
1175 const_iv (FS_DIRTY_FL)
1176 const_iv (FS_COMPRBLK_FL)
1177 const_iv (FS_NOCOMP_FL)
1178 const_iv (FS_ENCRYPT_FL)
1179 const_iv (FS_BTREE_FL)
1180 const_iv (FS_INDEX_FL)
1181 const_iv (FS_JOURNAL_DATA_FL)
1182 const_iv (FS_NOTAIL_FL)
1183 const_iv (FS_DIRSYNC_FL)
1184 const_iv (FS_TOPDIR_FL)
1185 const_iv (FS_FL_USER_MODIFIABLE)
1186
1187 const_iv (FS_XFLAG_REALTIME)
1188 const_iv (FS_XFLAG_PREALLOC)
1189 const_iv (FS_XFLAG_IMMUTABLE)
1190 const_iv (FS_XFLAG_APPEND)
1191 const_iv (FS_XFLAG_SYNC)
1192 const_iv (FS_XFLAG_NOATIME)
1193 const_iv (FS_XFLAG_NODUMP)
1194 const_iv (FS_XFLAG_RTINHERIT)
1195 const_iv (FS_XFLAG_PROJINHERIT)
1196 const_iv (FS_XFLAG_NOSYMLINKS)
1197 const_iv (FS_XFLAG_EXTSIZE)
1198 const_iv (FS_XFLAG_EXTSZINHERIT)
1199 const_iv (FS_XFLAG_NODEFRAG)
1200 const_iv (FS_XFLAG_FILESTREAM)
1201 const_iv (FS_XFLAG_DAX)
1202 const_iv (FS_XFLAG_HASATTR)
1203
1204 const_iv (FIEMAP_FLAG_SYNC)
1205 const_iv (FIEMAP_FLAG_XATTR)
1206 const_iv (FIEMAP_FLAGS_COMPAT)
1207 const_iv (FIEMAP_EXTENT_LAST)
1208 const_iv (FIEMAP_EXTENT_UNKNOWN)
1209 const_iv (FIEMAP_EXTENT_DELALLOC)
1210 const_iv (FIEMAP_EXTENT_ENCODED)
1211 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1212 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1213 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1214 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1215 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1216 const_iv (FIEMAP_EXTENT_MERGED)
1217 const_iv (FIEMAP_EXTENT_SHARED)
1218
1219 const_iv (SPLICE_F_MOVE)
1220 const_iv (SPLICE_F_NONBLOCK)
1221 const_iv (SPLICE_F_MORE)
1222 const_iv (SPLICE_F_GIFT)
1223
1224 const_iv (EFD_CLOEXEC)
1225 const_iv (EFD_NONBLOCK)
1226 const_iv (EFD_SEMAPHORE)
1227
1228 const_iv (CLOCK_REALTIME)
1229 const_iv (CLOCK_MONOTONIC)
1230 const_iv (CLOCK_BOOTTIME)
1231 const_iv (CLOCK_REALTIME_ALARM)
1232 const_iv (CLOCK_BOOTTIME_ALARM)
1233
1234 const_iv (TFD_NONBLOCK)
1235 const_iv (TFD_CLOEXEC)
1236
1237 const_iv (TFD_TIMER_ABSTIME)
1238 const_iv (TFD_TIMER_CANCEL_ON_SET)
1239
1240 /* these are libeio constants, and are independent of gendef0 */
1241 const_eio (SEEK_SET)
1242 const_eio (SEEK_CUR)
1243 const_eio (SEEK_END)
1244
1245 const_eio (MCL_FUTURE)
1246 const_eio (MCL_CURRENT)
1247
1248 const_eio (MS_ASYNC)
1249 const_eio (MS_INVALIDATE)
1250 const_eio (MS_SYNC)
1251
1252 const_eio (MT_MODIFY)
1253
1254 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1255 const_eio (SYNC_FILE_RANGE_WRITE)
1256 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1257
1258 const_eio (FALLOC_FL_KEEP_SIZE)
1259 const_eio (FALLOC_FL_PUNCH_HOLE)
1260 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1261 const_eio (FALLOC_FL_ZERO_RANGE)
1262 const_eio (FALLOC_FL_INSERT_RANGE)
1263 const_eio (FALLOC_FL_UNSHARE_RANGE)
1264
1265 const_eio (RENAME_NOREPLACE)
1266 const_eio (RENAME_EXCHANGE)
1267 const_eio (RENAME_WHITEOUT)
1268
1269 const_eio (READDIR_DENTS)
1270 const_eio (READDIR_DIRS_FIRST)
1271 const_eio (READDIR_STAT_ORDER)
1272 const_eio (READDIR_FOUND_UNKNOWN)
1273
1274 const_eio (DT_UNKNOWN)
1275 const_eio (DT_FIFO)
1276 const_eio (DT_CHR)
1277 const_eio (DT_DIR)
1278 const_eio (DT_BLK)
1279 const_eio (DT_REG)
1280 const_eio (DT_LNK)
1281 const_eio (DT_SOCK)
1282 const_eio (DT_WHT)
682 } 1283 };
683 1284
684# elif __hpux 1285 aio_stash = gv_stashpv ("IO::AIO" , 1);
685 res = sendfile (ofd, ifd, offset, count, 0, 0); 1286 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1287 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1288 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
686 1289
687# elif __solaris 1290 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
688 { 1291 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
689 struct sendfilevec vec;
690 size_t sbytes;
691 1292
692 vec.sfv_fd = ifd; 1293 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
693 vec.sfv_flag = 0;
694 vec.sfv_off = offset;
695 vec.sfv_len = count;
696 1294
697 res = sendfilev (ofd, &vec, 1, &sbytes); 1295 reinit ();
1296}
698 1297
699 if (res < 0 && sbytes) 1298void
1299reinit ()
1300 PROTOTYPE:
1301
1302void
1303max_poll_reqs (unsigned int nreqs)
1304 PROTOTYPE: $
1305 CODE:
1306 eio_set_max_poll_reqs (nreqs);
1307
1308void
1309max_poll_time (double nseconds)
1310 PROTOTYPE: $
1311 CODE:
1312 eio_set_max_poll_time (nseconds);
1313
1314void
1315min_parallel (unsigned int nthreads)
1316 PROTOTYPE: $
1317 CODE:
1318 eio_set_min_parallel (nthreads);
1319
1320void
1321max_parallel (unsigned int nthreads)
1322 PROTOTYPE: $
1323 CODE:
1324 eio_set_max_parallel (nthreads);
1325
1326void
1327max_idle (unsigned int nthreads)
1328 PROTOTYPE: $
1329 CODE:
1330 eio_set_max_idle (nthreads);
1331
1332void
1333idle_timeout (unsigned int seconds)
1334 PROTOTYPE: $
1335 CODE:
1336 eio_set_idle_timeout (seconds);
1337
1338void
1339max_outstanding (unsigned int maxreqs)
1340 PROTOTYPE: $
1341 CODE:
1342 max_outstanding = maxreqs;
1343
1344void
1345aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1346 PPCODE:
1347{
1348 dREQ;
1349
1350 req->type = EIO_WD_OPEN;
1351 req_set_path1 (req, pathname);
1352
1353 REQ_SEND;
1354}
1355
1356void
1357aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1358 PPCODE:
1359{
1360 dREQ;
1361
1362 req->type = EIO_OPEN;
1363 req_set_path1 (req, pathname);
1364 req->int1 = flags;
1365 req->int2 = mode;
1366
1367 REQ_SEND;
1368}
1369
1370void
1371aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1372 ALIAS:
1373 aio_fsync = EIO_FSYNC
1374 aio_fdatasync = EIO_FDATASYNC
1375 aio_syncfs = EIO_SYNCFS
1376 PPCODE:
1377{
1378 int fd = s_fileno_croak (fh, 0);
1379 dREQ;
1380
1381 req->type = ix;
1382 req->sv1 = newSVsv (fh);
1383 req->int1 = fd;
1384
1385 REQ_SEND;
1386}
1387
1388void
1389aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1390 PPCODE:
1391{
1392 int fd = s_fileno_croak (fh, 0);
1393 dREQ;
1394
1395 req->type = EIO_SYNC_FILE_RANGE;
1396 req->sv1 = newSVsv (fh);
1397 req->int1 = fd;
1398 req->offs = offset;
700 res = sbytes; 1399 req->size = nbytes;
701 } 1400 req->int2 = flags;
702 1401
703# endif 1402 REQ_SEND;
1403}
1404
1405void
1406aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1407 PPCODE:
1408{
1409 int fd = s_fileno_croak (fh, 0);
1410 dREQ;
1411
1412 req->type = EIO_FALLOCATE;
1413 req->sv1 = newSVsv (fh);
1414 req->int1 = fd;
1415 req->int2 = mode;
1416 req->offs = offset;
1417 req->size = len;
1418
1419 REQ_SEND;
1420}
1421
1422void
1423aio_close (SV *fh, SV *callback = &PL_sv_undef)
1424 PPCODE:
1425{
1426 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1427 int fd = s_fileno_croak (fh, 0);
1428 dREQ;
1429
1430 if (expect_false (close_fd < 0))
1431 {
1432 int pipefd [2];
1433
1434 if (
1435#ifdef _WIN32
1436 _pipe (pipefd, 1, _O_BINARY) < 0
704#else 1437#else
705 res = -1; 1438 pipe (pipefd) < 0
706 errno = ENOSYS; 1439 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
707#endif 1440#endif
708 1441 || close (pipefd [1]) < 0
709 if (res < 0
710 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711#if __solaris
712 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
713#endif
714 )
715 )
716 {
717 /* emulate sendfile. this is a major pain in the ass */
718 dBUF;
719
720 res = 0;
721
722 while (count)
723 {
724 ssize_t cnt;
725
726 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728 if (cnt <= 0)
729 { 1442 )
730 if (cnt && !res) res = -1; 1443 abort (); /*D*/
731 break;
732 }
733 1444
734 cnt = write (ofd, aio_buf, cnt); 1445 close_fd = pipefd [0];
735
736 if (cnt <= 0)
737 {
738 if (cnt && !res) res = -1;
739 break;
740 }
741
742 offset += cnt;
743 res += cnt;
744 count -= cnt;
745 }
746
747 fBUF;
748 }
749
750 return res;
751}
752
753/* read a full directory */
754static int scandir_ (const char *path, void **namesp)
755{
756 DIR *dirp;
757 union
758 {
759 struct dirent d;
760 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
761 } *u;
762 struct dirent *entp;
763 char *name, *names;
764 int memlen = 4096;
765 int memofs = 0;
766 int res = 0;
767 int errorno;
768
769 dirp = opendir (path);
770 if (!dirp)
771 return -1;
772
773 u = malloc (sizeof (*u));
774 names = malloc (memlen);
775
776 if (u && names)
777 for (;;)
778 {
779 errno = 0;
780 readdir_r (dirp, &u->d, &entp);
781
782 if (!entp)
783 break;
784
785 name = entp->d_name;
786
787 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
788 {
789 int len = strlen (name) + 1;
790
791 res++;
792
793 while (memofs + len > memlen)
794 {
795 memlen *= 2;
796 names = realloc (names, memlen);
797 if (!names)
798 break;
799 }
800
801 memcpy (names + memofs, name, len);
802 memofs += len;
803 } 1446 }
804 }
805 1447
806 errorno = errno; 1448 req->type = EIO_DUP2;
807 free (u); 1449 req->int1 = close_fd;
808 closedir (dirp); 1450 req->sv2 = newSVsv (fh);
809
810 if (errorno)
811 {
812 free (names);
813 errno = errorno;
814 res = -1;
815 }
816
817 *namesp = (void *)names;
818 return res;
819}
820
821/*****************************************************************************/
822
823static void *aio_proc (void *thr_arg)
824{
825 aio_req req;
826 int type;
827
828 do
829 {
830 pthread_mutex_lock (&reqlock);
831
832 for (;;)
833 {
834 req = reqs;
835
836 if (reqs)
837 {
838 reqs = reqs->next;
839 if (!reqs) reqe = 0;
840 }
841
842 if (req)
843 break;
844
845 pthread_cond_wait (&reqwait, &reqlock);
846 }
847
848 pthread_mutex_unlock (&reqlock);
849
850 errno = 0; /* strictly unnecessary */
851 type = req->type; /* remember type for QUIT check */
852
853 if (!(req->flags & FLAG_CANCELLED))
854 switch (type)
855 {
856 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858
859 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867 case REQ_CLOSE: req->result = close (req->fd); break;
868 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875 case REQ_FSYNC: req->result = fsync (req->fd); break;
876 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
877
878 case REQ_SLEEP:
879 {
880 struct timeval tv;
881
882 tv.tv_sec = req->fd;
883 tv.tv_usec = req->fd2;
884
885 req->result = select (0, 0, 0, 0, &tv);
886 }
887
888 case REQ_GROUP:
889 case REQ_NOP:
890 case REQ_QUIT:
891 break;
892
893 default:
894 req->result = ENOSYS;
895 break;
896 }
897
898 req->errorno = errno;
899
900 pthread_mutex_lock (&reslock);
901
902 req->next = 0; 1451 req->int2 = fd;
903 1452
904 if (rese) 1453 REQ_SEND;
905 {
906 rese->next = req;
907 rese = req;
908 }
909 else
910 {
911 rese = ress = req;
912
913 /* write a dummy byte to the pipe so fh becomes ready */
914 write (respipe [1], &respipe, 1);
915 }
916
917 pthread_mutex_unlock (&reslock);
918 }
919 while (type != REQ_QUIT);
920
921 return 0;
922} 1454}
923 1455
924/*****************************************************************************/
925
926static void atfork_prepare (void)
927{
928 pthread_mutex_lock (&reqlock);
929 pthread_mutex_lock (&reslock);
930#if !HAVE_PREADWRITE
931 pthread_mutex_lock (&preadwritelock);
932#endif
933#if !HAVE_READDIR_R
934 pthread_mutex_lock (&readdirlock);
935#endif
936}
937
938static void atfork_parent (void)
939{
940#if !HAVE_READDIR_R
941 pthread_mutex_unlock (&readdirlock);
942#endif
943#if !HAVE_PREADWRITE
944 pthread_mutex_unlock (&preadwritelock);
945#endif
946 pthread_mutex_unlock (&reslock);
947 pthread_mutex_unlock (&reqlock);
948}
949
950static void atfork_child (void)
951{
952 aio_req prv;
953
954 started = 0;
955
956 while (reqs)
957 {
958 prv = reqs;
959 reqs = prv->next;
960 req_free (prv);
961 }
962
963 reqs = reqe = 0;
964
965 while (ress)
966 {
967 prv = ress;
968 ress = prv->next;
969 req_free (prv);
970 }
971
972 ress = rese = 0;
973
974 close (respipe [0]);
975 close (respipe [1]);
976 create_pipe ();
977
978 atfork_parent ();
979}
980
981#define dREQ \
982 aio_req req; \
983 int req_pri = next_pri; \
984 next_pri = DEFAULT_PRI + PRI_BIAS; \
985 \
986 if (SvOK (callback) && !SvROK (callback)) \
987 croak ("callback must be undef or of reference type"); \
988 \
989 Newz (0, req, 1, aio_cb); \
990 if (!req) \
991 croak ("out of memory during aio_req allocation"); \
992 \
993 req->callback = newSVsv (callback); \
994 req->pri = req_pri
995
996#define REQ_SEND \
997 req_send (req); \
998 \
999 if (GIMME_V != G_VOID) \
1000 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001
1002MODULE = IO::AIO PACKAGE = IO::AIO
1003
1004PROTOTYPES: ENABLE
1005
1006BOOT:
1007{
1008 HV *stash = gv_stashpv ("IO::AIO", 1);
1009 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1012
1013 create_pipe ();
1014 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015}
1016
1017void 1456void
1018min_parallel (nthreads) 1457aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1019 int nthreads
1020 PROTOTYPE: $
1021
1022void
1023max_parallel (nthreads)
1024 int nthreads
1025 PROTOTYPE: $
1026
1027int
1028max_outstanding (nreqs)
1029 int nreqs
1030 PROTOTYPE: $
1031 CODE: 1458 PPCODE:
1032 RETVAL = max_outstanding;
1033 max_outstanding = nreqs;
1034
1035void
1036aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1037 SV * pathname
1038 int flags
1039 int mode
1040 SV * callback
1041 PROTOTYPE: $$$;$
1042 PPCODE:
1043{ 1459{
1460 int fd = s_fileno_croak (fh, 0);
1044 dREQ; 1461 dREQ;
1045 1462
1046 req->type = REQ_OPEN; 1463 req->type = EIO_SEEK;
1047 req->data = newSVsv (pathname); 1464 req->sv1 = newSVsv (fh);
1048 req->dataptr = SvPVbyte_nolen (req->data); 1465 req->int1 = fd;
1049 req->fd = flags; 1466 req->offs = SvVAL64 (offset);
1050 req->mode = mode; 1467 req->int2 = whence;
1051 1468
1052 REQ_SEND; 1469 REQ_SEND;
1053} 1470}
1054 1471
1055void 1472void
1056aio_close (fh,callback=&PL_sv_undef) 1473aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1057 SV * fh
1058 SV * callback
1059 PROTOTYPE: $;$
1060 ALIAS: 1474 ALIAS:
1061 aio_close = REQ_CLOSE
1062 aio_fsync = REQ_FSYNC
1063 aio_fdatasync = REQ_FDATASYNC
1064 PPCODE:
1065{
1066 dREQ;
1067
1068 req->type = ix;
1069 req->fh = newSVsv (fh);
1070 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071
1072 REQ_SEND (req);
1073}
1074
1075void
1076aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1077 SV * fh
1078 UV offset
1079 UV length
1080 SV * data
1081 UV dataoffset
1082 SV * callback
1083 ALIAS:
1084 aio_read = REQ_READ 1475 aio_read = EIO_READ
1085 aio_write = REQ_WRITE 1476 aio_write = EIO_WRITE
1086 PROTOTYPE: $$$$$;$
1087 PPCODE: 1477 PPCODE:
1088{ 1478{
1089 aio_req req;
1090 STRLEN svlen; 1479 STRLEN svlen;
1480 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1091 char *svptr = SvPVbyte (data, svlen); 1481 char *svptr = SvPVbyte (data, svlen);
1092 1482 UV len = SvUV (length);
1093 SvUPGRADE (data, SVt_PV);
1094 SvPOK_on (data);
1095 1483
1096 if (dataoffset < 0) 1484 if (dataoffset < 0)
1097 dataoffset += svlen; 1485 dataoffset += svlen;
1098 1486
1099 if (dataoffset < 0 || dataoffset > svlen) 1487 if (dataoffset < 0 || dataoffset > svlen)
1100 croak ("data offset outside of string"); 1488 croak ("dataoffset outside of data scalar");
1101 1489
1102 if (ix == REQ_WRITE) 1490 if (ix == EIO_WRITE)
1103 { 1491 {
1104 /* write: check length and adjust. */ 1492 /* write: check length and adjust. */
1105 if (length < 0 || length + dataoffset > svlen) 1493 if (!SvOK (length) || len + dataoffset > svlen)
1106 length = svlen - dataoffset; 1494 len = svlen - dataoffset;
1107 } 1495 }
1108 else 1496 else
1109 { 1497 {
1110 /* read: grow scalar as necessary */ 1498 /* read: check type and grow scalar as necessary */
1499 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1111 svptr = SvGROW (data, length + dataoffset); 1500 svptr = sv_grow (data, len + dataoffset + 1);
1501 else if (SvCUR (data) < len + dataoffset)
1502 croak ("length + dataoffset outside of scalar, and cannot grow");
1112 } 1503 }
1113
1114 if (length < 0)
1115 croak ("length must not be negative");
1116 1504
1117 { 1505 {
1118 dREQ; 1506 dREQ;
1119 1507
1120 req->type = ix; 1508 req->type = ix;
1121 req->fh = newSVsv (fh); 1509 req->sv1 = newSVsv (fh);
1122 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1510 req->int1 = fd;
1123 : IoOFP (sv_2io (fh))); 1511 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124 req->offset = offset; 1512 req->size = len;
1125 req->length = length;
1126 req->data = SvREFCNT_inc (data); 1513 req->sv2 = SvREFCNT_inc (data);
1127 req->dataptr = (char *)svptr + dataoffset; 1514 req->ptr2 = (char *)svptr + dataoffset;
1515 req->stroffset = dataoffset;
1128 1516
1129 if (!SvREADONLY (data)) 1517 if (!SvREADONLY (data))
1130 { 1518 {
1131 SvREADONLY_on (data); 1519 SvREADONLY_on (data);
1132 req->data2ptr = (void *)data; 1520 req->flags |= FLAG_SV2_RO_OFF;
1133 } 1521 }
1134 1522
1135 REQ_SEND; 1523 REQ_SEND;
1136 } 1524 }
1137} 1525}
1138 1526
1139void 1527void
1140aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1528aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1141 SV * out_fh 1529 ALIAS:
1142 SV * in_fh 1530 aio_ioctl = EIO_IOCTL
1143 UV in_offset 1531 aio_fcntl = EIO_FCNTL
1144 UV length
1145 SV * callback
1146 PROTOTYPE: $$$$;$
1147 PPCODE: 1532 PPCODE:
1148{ 1533{
1149 dREQ; 1534 int fd = s_fileno_croak (fh, 0);
1535 char *svptr;
1150 1536
1151 req->type = REQ_SENDFILE; 1537 if (SvPOK (arg) || !SvNIOK (arg))
1152 req->fh = newSVsv (out_fh);
1153 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154 req->fh2 = newSVsv (in_fh);
1155 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156 req->offset = in_offset;
1157 req->length = length;
1158
1159 REQ_SEND;
1160}
1161
1162void
1163aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1164 SV * fh
1165 UV offset
1166 IV length
1167 SV * callback
1168 PROTOTYPE: $$$;$
1169 PPCODE:
1170{
1171 dREQ;
1172
1173 req->type = REQ_READAHEAD;
1174 req->fh = newSVsv (fh);
1175 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176 req->offset = offset;
1177 req->length = length;
1178
1179 REQ_SEND;
1180}
1181
1182void
1183aio_stat (fh_or_path,callback=&PL_sv_undef)
1184 SV * fh_or_path
1185 SV * callback
1186 ALIAS:
1187 aio_stat = REQ_STAT
1188 aio_lstat = REQ_LSTAT
1189 PPCODE:
1190{
1191 dREQ;
1192
1193 New (0, req->statdata, 1, Stat_t);
1194 if (!req->statdata)
1195 { 1538 {
1196 req_free (req); 1539 STRLEN svlen;
1197 croak ("out of memory during aio_req->statdata allocation"); 1540 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1198 } 1541#ifdef IOCPARM_LEN
1542 STRLEN need = IOCPARM_LEN (request);
1543#else
1544 STRLEN need = 256;
1545#endif
1199 1546
1200 if (SvPOK (fh_or_path)) 1547 if (svlen < need)
1201 { 1548 svptr = SvGROW (arg, need);
1202 req->type = ix;
1203 req->data = newSVsv (fh_or_path);
1204 req->dataptr = SvPVbyte_nolen (req->data);
1205 } 1549 }
1206 else 1550 else
1551 svptr = (char *)SvIV (arg);
1552
1207 { 1553 {
1554 dREQ;
1555
1208 req->type = REQ_FSTAT; 1556 req->type = ix;
1209 req->fh = newSVsv (fh_or_path); 1557 req->sv1 = newSVsv (fh);
1210 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1558 req->int1 = fd;
1559 req->int2 = (long)request;
1560 req->sv2 = SvREFCNT_inc (arg);
1561 req->ptr2 = svptr;
1562
1563 REQ_SEND;
1211 } 1564 }
1565}
1566
1567void
1568aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1569 ALIAS:
1570 aio_readlink = EIO_READLINK
1571 aio_realpath = EIO_REALPATH
1572 PPCODE:
1573{
1574 dREQ;
1575
1576 req->type = ix;
1577 req_set_path1 (req, pathname);
1212 1578
1213 REQ_SEND; 1579 REQ_SEND;
1214} 1580}
1215 1581
1216void 1582void
1217aio_unlink (pathname,callback=&PL_sv_undef) 1583aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1218 SV * pathname 1584 PPCODE:
1219 SV * callback 1585{
1586 int ifd = s_fileno_croak (in_fh , 0);
1587 int ofd = s_fileno_croak (out_fh, 1);
1588 dREQ;
1589
1590 req->type = EIO_SENDFILE;
1591 req->sv1 = newSVsv (out_fh);
1592 req->int1 = ofd;
1593 req->sv2 = newSVsv (in_fh);
1594 req->int2 = ifd;
1595 req->offs = in_offset;
1596 req->size = length;
1597
1598 REQ_SEND;
1599}
1600
1601void
1602aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1603 PPCODE:
1604{
1605 int fd = s_fileno_croak (fh, 0);
1606 dREQ;
1607
1608 req->type = EIO_READAHEAD;
1609 req->sv1 = newSVsv (fh);
1610 req->int1 = fd;
1611 req->offs = offset;
1612 req->size = length;
1613
1614 REQ_SEND;
1615}
1616
1617void
1618aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1220 ALIAS: 1619 ALIAS:
1620 aio_stat = EIO_STAT
1621 aio_lstat = EIO_LSTAT
1622 aio_statvfs = EIO_STATVFS
1623 PPCODE:
1624{
1625 dREQ;
1626
1627 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1628
1629 REQ_SEND;
1630}
1631
1632void
1633stat_xtime ()
1634 ALIAS:
1635 stat_atime = 1
1636 stat_mtime = 2
1637 stat_ctime = 4
1638 stat_xtime = 7
1639 PPCODE:
1640 EXTEND (SP, 3);
1641 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1642 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1643 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1644
1645void
1646stat_xtimensec ()
1647 ALIAS:
1648 stat_atimensec = 1
1649 stat_mtimensec = 2
1650 stat_ctimensec = 4
1651 stat_xtimensec = 7
1652 PPCODE:
1653 EXTEND (SP, 3);
1654 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1655 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1656 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1657
1658UV
1659major (UV dev)
1660 ALIAS:
1661 minor = 1
1662 CODE:
1663 RETVAL = ix ? minor (dev) : major (dev);
1664 OUTPUT:
1665 RETVAL
1666
1667UV
1668makedev (UV maj, UV min)
1669 CODE:
1670 RETVAL = makedev (maj, min);
1671 OUTPUT:
1672 RETVAL
1673
1674void
1675aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1676 PPCODE:
1677{
1678 dREQ;
1679
1680 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1681 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1682 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1683
1684 REQ_SEND;
1685}
1686
1687void
1688aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1689 PPCODE:
1690{
1691 dREQ;
1692
1693 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1694 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1695
1696 REQ_SEND;
1697}
1698
1699void
1700aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1701 PPCODE:
1702{
1703 dREQ;
1704
1705 req->int2 = mode;
1706 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1707
1708 REQ_SEND;
1709}
1710
1711void
1712aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1713 PPCODE:
1714{
1715 dREQ;
1716
1717 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1718 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1719 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1720
1721 REQ_SEND;
1722}
1723
1724void
1725aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1726 PPCODE:
1727{
1728 dREQ;
1729
1730 req->type = EIO_READDIR;
1731 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1732
1733 if (flags & EIO_READDIR_DENTS)
1734 req->int1 |= EIO_READDIR_CUSTOM2;
1735
1736 req_set_path1 (req, pathname);
1737
1738 REQ_SEND;
1739}
1740
1741void
1742aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1743 PPCODE:
1744{
1745 dREQ;
1746
1747 req->type = EIO_MKDIR;
1748 req->int2 = mode;
1749 req_set_path1 (req, pathname);
1750
1751 REQ_SEND;
1752}
1753
1754void
1755aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1756 ALIAS:
1221 aio_unlink = REQ_UNLINK 1757 aio_unlink = EIO_UNLINK
1222 aio_rmdir = REQ_RMDIR 1758 aio_rmdir = EIO_RMDIR
1223 aio_readdir = REQ_READDIR 1759 aio_readdir = EIO_READDIR
1224 PPCODE: 1760 PPCODE:
1225{ 1761{
1226 dREQ; 1762 dREQ;
1227 1763
1228 req->type = ix; 1764 req->type = ix;
1229 req->data = newSVsv (pathname); 1765 req_set_path1 (req, pathname);
1230 req->dataptr = SvPVbyte_nolen (req->data); 1766
1231
1232 REQ_SEND; 1767 REQ_SEND;
1233} 1768}
1234 1769
1235void 1770void
1236aio_link (oldpath,newpath,callback=&PL_sv_undef) 1771aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1237 SV * oldpath
1238 SV * newpath
1239 SV * callback
1240 ALIAS: 1772 ALIAS:
1241 aio_link = REQ_LINK 1773 aio_link = EIO_LINK
1242 aio_symlink = REQ_SYMLINK 1774 aio_symlink = EIO_SYMLINK
1243 aio_rename = REQ_RENAME 1775 aio_rename = EIO_RENAME
1244 PPCODE: 1776 PPCODE:
1245{ 1777{
1778 eio_wd wd2 = 0;
1246 dREQ; 1779 dREQ;
1247 1780
1248 req->type = ix; 1781 req->type = ix;
1249 req->fh = newSVsv (oldpath); 1782 req_set_path1 (req, oldpath);
1250 req->data2ptr = SvPVbyte_nolen (req->fh); 1783 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1251 req->data = newSVsv (newpath); 1784 req->int3 = (long)wd2;
1252 req->dataptr = SvPVbyte_nolen (req->data);
1253 1785
1254 REQ_SEND; 1786 REQ_SEND;
1255} 1787}
1256 1788
1257void 1789void
1258aio_sleep (delay,callback=&PL_sv_undef) 1790aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1259 double delay
1260 SV * callback
1261 PPCODE: 1791 PPCODE:
1262{ 1792{
1793 eio_wd wd2 = 0;
1263 dREQ; 1794 dREQ;
1264 1795
1265 req->type = REQ_SLEEP; 1796 req->type = EIO_RENAME;
1266 req->fd = delay < 0. ? 0 : delay; 1797 req_set_path1 (req, oldpath);
1267 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1798 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1268 1799 req->int2 = flags;
1800 req->int3 = (long)wd2;
1801
1269 REQ_SEND; 1802 REQ_SEND;
1270} 1803}
1271 1804
1272void 1805void
1273aio_group (callback=&PL_sv_undef) 1806aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1274 SV * callback 1807 PPCODE:
1275 PROTOTYPE: ;$ 1808{
1809 dREQ;
1810
1811 req->type = EIO_MKNOD;
1812 req->int2 = (mode_t)mode;
1813 req->offs = dev;
1814 req_set_path1 (req, pathname);
1815
1816 REQ_SEND;
1817}
1818
1819void
1820aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1821 ALIAS:
1822 aio_mtouch = EIO_MTOUCH
1823 aio_msync = EIO_MSYNC
1276 PPCODE: 1824 PPCODE:
1277{ 1825{
1826 STRLEN svlen;
1827 char *svptr = SvPVbyte (data, svlen);
1828 UV len = SvUV (length);
1829
1830 if (flags < 0)
1831 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1832
1833 if (offset < 0)
1834 offset += svlen;
1835
1836 if (offset < 0 || offset > svlen)
1837 croak ("offset outside of scalar");
1838
1839 if (!SvOK (length) || len + offset > svlen)
1840 len = svlen - offset;
1841
1842 {
1843 dREQ;
1844
1845 req->type = ix;
1846 req->sv2 = SvREFCNT_inc (data);
1847 req->ptr2 = (char *)svptr + offset;
1848 req->size = len;
1849 req->int1 = flags;
1850
1851 REQ_SEND;
1852 }
1853}
1854
1855void
1856aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1857 PPCODE:
1858{
1859 STRLEN svlen;
1860 char *svptr = SvPVbyte (data, svlen);
1861 UV len = SvUV (length);
1862
1863 if (offset < 0)
1864 offset += svlen;
1865
1866 if (offset < 0 || offset > svlen)
1867 croak ("offset outside of scalar");
1868
1869 if (!SvOK (length) || len + offset > svlen)
1870 len = svlen - offset;
1871
1872 {
1873 dREQ;
1874
1875 req->type = EIO_MLOCK;
1876 req->sv2 = SvREFCNT_inc (data);
1877 req->ptr2 = (char *)svptr + offset;
1878 req->size = len;
1879
1880 REQ_SEND;
1881 }
1882}
1883
1884void
1885aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1886 PPCODE:
1887{
1888 dREQ;
1889
1890 req->type = EIO_MLOCKALL;
1891 req->int1 = flags;
1892
1893 REQ_SEND;
1894}
1895
1896void
1897aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1898 PPCODE:
1899{
1900 int fd = s_fileno_croak (fh, 0);
1278 dREQ; 1901 dREQ;
1279 1902
1280 req->type = REQ_GROUP; 1903 req->type = EIO_CUSTOM;
1281 req_send (req); 1904 req->sv1 = newSVsv (fh);
1905 req->int1 = fd;
1282 1906
1283 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1907 req->feed = fiemap;
1284} 1908#if HAVE_FIEMAP
1909 /* keep our fingers crossed that the next two types are 64 bit */
1910 req->offs = start;
1911 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1912 req->int2 = flags;
1913 req->int3 = SvOK (count) ? SvIV (count) : -1;
1914#endif
1285 1915
1916 REQ_SEND;
1917}
1918
1286void 1919void
1287aio_nop (callback=&PL_sv_undef) 1920aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1288 SV * callback 1921 PPCODE:
1922{
1923 char *svptr = 0;
1924
1925 sv_clear_foreign (data);
1926
1927 if (length) /* known length, directly read into scalar */
1928 {
1929 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1930 svptr = sv_grow (data, length + 1);
1931 else if (SvCUR (data) < length)
1932 croak ("length outside of scalar, and cannot grow");
1933 else
1934 svptr = SvPVbyte_nolen (data);
1935 }
1936
1937 {
1938 dREQ;
1939
1940 req->type = EIO_SLURP;
1941 req_set_path1 (req, pathname);
1942 req->offs = offset;
1943 req->size = length;
1944 req->sv2 = SvREFCNT_inc (data);
1945 req->ptr2 = svptr;
1946
1947 if (!SvREADONLY (data))
1948 {
1949 SvREADONLY_on (data);
1950 req->flags |= FLAG_SV2_RO_OFF;
1951 }
1952
1953 REQ_SEND;
1954 }
1955}
1956
1957void
1958aio_busy (double delay, SV *callback = &PL_sv_undef)
1289 PPCODE: 1959 PPCODE:
1290{ 1960{
1291 dREQ; 1961 dREQ;
1292 1962
1293 req->type = REQ_NOP; 1963 req->type = EIO_BUSY;
1964 req->nv1 = delay < 0. ? 0. : delay;
1294 1965
1295 REQ_SEND; 1966 REQ_SEND;
1296} 1967}
1297 1968
1298#if 0
1299
1300void 1969void
1301aio_pri (int pri = DEFAULT_PRI) 1970aio_group (SV *callback = &PL_sv_undef)
1971 PPCODE:
1972{
1973 dREQ;
1974
1975 req->type = EIO_GROUP;
1976
1977 PUTBACK;
1978 req_submit (req);
1979 SPAGAIN;
1980
1981 XPUSHs (req_sv (req, aio_grp_stash));
1982}
1983
1984void
1985aio_nop (SV *callback = &PL_sv_undef)
1986 ALIAS:
1987 aio_nop = EIO_NOP
1988 aio_sync = EIO_SYNC
1989 PPCODE:
1990{
1991 dREQ;
1992
1993 req->type = ix;
1994
1995 REQ_SEND;
1996}
1997
1998int
1999aioreq_pri (int pri = NO_INIT)
1302 CODE: 2000 CODE:
2001 RETVAL = next_pri;
2002 if (items > 0)
2003 {
1303 if (pri < PRI_MIN) pri = PRI_MIN; 2004 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304 if (pri > PRI_MAX) pri = PRI_MAX; 2005 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305 next_pri = pri + PRI_BIAS; 2006 next_pri = pri;
2007 }
2008 OUTPUT:
2009 RETVAL
1306 2010
1307#endif 2011void
2012aioreq_nice (int nice = 0)
2013 CODE:
2014 nice = next_pri - nice;
2015 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2016 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2017 next_pri = nice;
1308 2018
1309void 2019void
1310flush () 2020flush ()
1311 PROTOTYPE:
1312 CODE: 2021 CODE:
1313 while (nreqs) 2022 while (eio_nreqs ())
1314 { 2023 {
1315 poll_wait (); 2024 poll_wait ();
1316 poll_cb (); 2025 poll_cb ();
1317 } 2026 }
1318 2027
1319void 2028int
1320poll() 2029poll ()
1321 PROTOTYPE:
1322 CODE: 2030 CODE:
1323 if (nreqs)
1324 {
1325 poll_wait (); 2031 poll_wait ();
1326 poll_cb (); 2032 RETVAL = poll_cb ();
1327 }
1328
1329int
1330poll_fileno()
1331 PROTOTYPE:
1332 CODE:
1333 RETVAL = respipe [0];
1334 OUTPUT: 2033 OUTPUT:
1335 RETVAL 2034 RETVAL
1336 2035
1337int 2036int
2037poll_fileno ()
2038 CODE:
2039 RETVAL = s_epipe_fd (&respipe);
2040 OUTPUT:
2041 RETVAL
2042
2043int
1338poll_cb(...) 2044poll_cb (...)
1339 PROTOTYPE: 2045 PROTOTYPE:
1340 CODE: 2046 CODE:
1341 RETVAL = poll_cb (); 2047 RETVAL = poll_cb ();
1342 OUTPUT: 2048 OUTPUT:
1343 RETVAL 2049 RETVAL
1344 2050
1345void 2051void
1346poll_wait() 2052poll_wait ()
1347 PROTOTYPE:
1348 CODE: 2053 CODE:
1349 if (nreqs)
1350 poll_wait (); 2054 poll_wait ();
1351 2055
1352int 2056int
1353nreqs() 2057nreqs ()
1354 PROTOTYPE:
1355 CODE: 2058 CODE:
1356 RETVAL = nreqs; 2059 RETVAL = eio_nreqs ();
1357 OUTPUT: 2060 OUTPUT:
1358 RETVAL 2061 RETVAL
1359 2062
2063int
2064nready ()
2065 CODE:
2066 RETVAL = eio_nready ();
2067 OUTPUT:
2068 RETVAL
2069
2070int
2071npending ()
2072 CODE:
2073 RETVAL = eio_npending ();
2074 OUTPUT:
2075 RETVAL
2076
2077int
2078nthreads ()
2079 CODE:
2080 RETVAL = eio_nthreads ();
2081 OUTPUT:
2082 RETVAL
2083
2084int
2085fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2086 CODE:
2087 RETVAL = posix_fadvise (fh, offset, length, advice);
2088 OUTPUT:
2089 RETVAL
2090
2091IV
2092sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2093 CODE:
2094 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2095 OUTPUT:
2096 RETVAL
2097
2098void
2099mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2100 PPCODE:
2101 sv_clear_foreign (scalar);
2102{
2103 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2104 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2105 if (addr == (void *)-1)
2106 XSRETURN_NO;
2107
2108 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2109
2110 if (!(prot & PROT_WRITE))
2111 SvREADONLY_on (scalar);
2112
2113 XSRETURN_YES;
2114}
2115
2116void
2117munmap (SV *scalar)
2118 CODE:
2119 sv_clear_foreign (scalar);
2120
2121SV *
2122mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2123 CODE:
2124{
2125 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2126 void *new;
2127
2128 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2129 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2130
2131 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2132
2133 RETVAL = &PL_sv_no;
2134
2135 if (new != (void *)-1)
2136 {
2137 RETVAL = new == (void *)mg->mg_ptr
2138 ? newSVpvn ("0 but true", 10)
2139 : &PL_sv_yes;
2140
2141 mg->mg_ptr = (char *)new;
2142 mg->mg_obj = (SV *)new_length;
2143
2144 SvPVX (scalar) = mg->mg_ptr;
2145 SvCUR_set (scalar, new_length);
2146 }
2147}
2148 OUTPUT:
2149 RETVAL
2150
2151int
2152madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2153 ALIAS:
2154 mprotect = 1
2155 CODE:
2156{
2157 STRLEN svlen;
2158 void *addr = SvPVbyte (scalar, svlen);
2159 STRLEN len = SvUV (length);
2160
2161 if (offset < 0)
2162 offset += svlen;
2163
2164 if (offset < 0 || offset > svlen)
2165 croak ("offset outside of scalar");
2166
2167 if (!SvOK (length) || len + offset > svlen)
2168 len = svlen - offset;
2169
2170 addr = (void *)(((intptr_t)addr) + offset);
2171 eio_page_align (&addr, &len);
2172
2173 switch (ix)
2174 {
2175 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2176 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2177 }
2178}
2179 OUTPUT:
2180 RETVAL
2181
2182int
2183munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2184 CODE:
2185{
2186 STRLEN svlen;
2187 void *addr = SvPVbyte (scalar, svlen);
2188 size_t len = SvUV (length);
2189
2190 if (offset < 0)
2191 offset += svlen;
2192
2193 if (offset < 0 || offset > svlen)
2194 croak ("offset outside of scalar");
2195
2196 if (!SvOK (length) || len + offset > svlen)
2197 len = svlen - offset;
2198
2199 addr = (void *)(((intptr_t)addr) + offset);
2200 eio_page_align (&addr, &len);
2201#if _POSIX_MEMLOCK_RANGE
2202 RETVAL = munlock (addr, len);
2203#else
2204 RETVAL = EIO_ENOSYS ();
2205#endif
2206}
2207 OUTPUT:
2208 RETVAL
2209
2210int
2211munlockall ()
2212 CODE:
2213#if _POSIX_MEMLOCK
2214 munlockall ();
2215#else
2216 RETVAL = EIO_ENOSYS ();
2217#endif
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2223 CODE:
2224{
2225#if HAVE_LINUX_SPLICE
2226 loff_t off_in_, off_out_;
2227 RETVAL = splice (
2228 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2229 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2230 length, flags
2231 );
2232#else
2233 RETVAL = EIO_ENOSYS ();
2234#endif
2235}
2236 OUTPUT:
2237 RETVAL
2238
2239int
2240tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2241 CODE:
2242#if HAVE_LINUX_SPLICE
2243 RETVAL = tee (rfh, wfh, length, flags);
2244#else
2245 RETVAL = EIO_ENOSYS ();
2246#endif
2247 OUTPUT:
2248 RETVAL
2249
2250int
2251pipesize (aio_rfd rfh, int new_size = -1)
2252 PROTOTYPE: $;$
2253 CODE:
2254#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2255 if (new_size >= 0)
2256 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2257 else
2258 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2259#else
2260 errno = ENOSYS;
2261 RETVAL = -1;
2262#endif
2263 OUTPUT:
2264 RETVAL
2265
2266void
2267pipe2 (int flags = 0)
2268 PROTOTYPE: ;$
2269 PPCODE:
2270{
2271 int fd[2];
2272 int res;
2273
2274 if (flags)
2275#if HAVE_PIPE2
2276 res = pipe2 (fd, flags);
2277#else
2278 res = (errno = ENOSYS, -1);
2279#endif
2280 else
2281 res = pipe (fd);
2282
2283 if (!res)
2284 {
2285 EXTEND (SP, 2);
2286 PUSHs (newmortalFH (fd[0], O_RDONLY));
2287 PUSHs (newmortalFH (fd[1], O_WRONLY));
2288 }
2289}
2290
2291void
2292eventfd (unsigned int initval = 0, int flags = 0)
2293 PPCODE:
2294{
2295 int fd;
2296#if HAVE_EVENTFD
2297 fd = eventfd (initval, flags);
2298#else
2299 fd = (errno = ENOSYS, -1);
2300#endif
2301
2302 XPUSHs (newmortalFH (fd, O_RDWR));
2303}
2304
2305void
2306timerfd_create (int clockid, int flags = 0)
2307 PPCODE:
2308{
2309 int fd;
2310#if HAVE_TIMERFD
2311 fd = timerfd_create (clockid, flags);
2312#else
2313 fd = (errno = ENOSYS, -1);
2314#endif
2315
2316 XPUSHs (newmortalFH (fd, O_RDWR));
2317}
2318
2319void
2320timerfd_settime (SV *fh, int flags, NV interval, NV value)
2321 PPCODE:
2322{
2323 int fd = s_fileno_croak (fh, 0);
2324#if HAVE_TIMERFD
2325 int res;
2326 struct itimerspec its, ots;
2327
2328 ts_set (&its.it_interval, interval);
2329 ts_set (&its.it_value , value);
2330 res = timerfd_settime (fd, flags, &its, &ots);
2331
2332 if (!res)
2333 {
2334 EXTEND (SP, 2);
2335 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2336 PUSHs (newSVnv (ts_get (&ots.it_value)));
2337 }
2338#else
2339 errno = ENOSYS;
2340#endif
2341}
2342
2343void
2344timerfd_gettime (SV *fh)
2345 PPCODE:
2346{
2347 int fd = s_fileno_croak (fh, 0);
2348#if HAVE_TIMERFD
2349 int res;
2350 struct itimerspec ots;
2351 res = timerfd_gettime (fd, &ots);
2352
2353 if (!res)
2354 {
2355 EXTEND (SP, 2);
2356 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2357 PUSHs (newSVnv (ts_get (&ots.it_value)));
2358 }
2359#else
2360 errno = ENOSYS;
2361#endif
2362}
2363
2364UV
2365get_fdlimit ()
2366 CODE:
2367#if HAVE_RLIMITS
2368 struct rlimit rl;
2369 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2370 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2371#endif
2372 XSRETURN_UNDEF;
2373 OUTPUT:
2374 RETVAL
2375
2376void
2377min_fdlimit (UV limit = 0x7fffffffU)
2378 CODE:
2379{
2380#if HAVE_RLIMITS
2381 struct rlimit rl;
2382 rlim_t orig_rlim_max;
2383 UV bit;
2384
2385 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2386 goto fail;
2387
2388 if (rl.rlim_cur == RLIM_INFINITY)
2389 XSRETURN_YES;
2390
2391 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2392
2393 if (rl.rlim_cur < limit)
2394 {
2395 rl.rlim_cur = limit;
2396
2397 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2398 rl.rlim_max = rl.rlim_cur;
2399 }
2400
2401 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2402 XSRETURN_YES;
2403
2404 if (errno == EPERM)
2405 {
2406 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2407 /* our limit overflows a system-wide limit */
2408 /* try an adaptive algorithm, but do not lower the hardlimit */
2409 rl.rlim_max = 0;
2410 for (bit = 0x40000000U; bit; bit >>= 1)
2411 {
2412 rl.rlim_max |= bit;
2413 rl.rlim_cur = rl.rlim_max;
2414
2415 /* nevr decrease the hard limit */
2416 if (rl.rlim_max < orig_rlim_max)
2417 break;
2418
2419 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2420 rl.rlim_max &= ~bit; /* too high, remove bit again */
2421 }
2422
2423 /* now, raise the soft limit to the max permitted */
2424 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2425 {
2426 rl.rlim_cur = rl.rlim_max;
2427 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2428 errno = EPERM;
2429 }
2430 }
2431#endif
2432 fail:
2433 XSRETURN_UNDEF;
2434}
2435
2436void _on_next_submit (SV *cb)
2437 CODE:
2438 SvREFCNT_dec (on_next_submit);
2439 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2440
1360PROTOTYPES: DISABLE 2441PROTOTYPES: DISABLE
2442
2443MODULE = IO::AIO PACKAGE = IO::AIO::WD
2444
2445BOOT:
2446{
2447 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2448 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2449}
2450
2451void
2452DESTROY (SV *self)
2453 CODE:
2454{
2455 aio_wd wd = SvAIO_WD (self);
2456#if HAVE_AT
2457 {
2458 SV *callback = &PL_sv_undef;
2459 dREQ; /* clobbers next_pri :/ */
2460 next_pri = req->pri; /* restore next_pri */
2461 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2462 req->type = EIO_WD_CLOSE;
2463 req->wd = wd;
2464 REQ_SEND;
2465 }
2466#else
2467 eio_wd_close_sync (wd);
2468#endif
2469}
1361 2470
1362MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2471MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363 2472
1364void 2473void
1365cancel (aio_req_ornot req) 2474cancel (aio_req_ornot req)
1366 CODE: 2475 CODE:
1367 req_cancel (req); 2476 eio_cancel (req);
1368 2477
1369void 2478void
1370cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2479cb (aio_req_ornot req, SV *callback = NO_INIT)
1371 CODE: 2480 PPCODE:
2481{
2482 if (GIMME_V != G_VOID)
2483 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2484
2485 if (items > 1)
2486 {
2487 SV *cb_cv = get_cb (callback);
2488
1372 SvREFCNT_dec (req->callback); 2489 SvREFCNT_dec (req->callback);
1373 req->callback = newSVsv (callback); 2490 req->callback = SvREFCNT_inc (cb_cv);
2491 }
2492}
1374 2493
1375MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2494MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376 2495
1377void 2496void
1378add (aio_req grp, ...) 2497add (aio_req grp, ...)
1379 PPCODE: 2498 PPCODE:
1380{ 2499{
1381 int i; 2500 int i;
1382 aio_req req;
1383 2501
1384 if (grp->fd == 2) 2502 if (grp->int1 == 2)
1385 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2503 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1386 2504
1387 for (i = 1; i < items; ++i ) 2505 for (i = 1; i < items; ++i )
1388 { 2506 {
2507 aio_req req;
2508
1389 if (GIMME_V != G_VOID) 2509 if (GIMME_V != G_VOID)
1390 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2510 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391 2511
1392 req = SvAIO_REQ (ST (i)); 2512 req = SvAIO_REQ (ST (i));
1393 2513
1394 if (req) 2514 if (req)
1395 { 2515 eio_grp_add (grp, req);
1396 ++grp->length;
1397 req->grp = grp;
1398
1399 req->grp_prev = 0;
1400 req->grp_next = grp->grp_first;
1401
1402 if (grp->grp_first)
1403 grp->grp_first->grp_prev = req;
1404
1405 grp->grp_first = req;
1406 }
1407 } 2516 }
1408} 2517}
2518
2519void
2520cancel_subs (aio_req_ornot req)
2521 CODE:
2522 req_cancel_subs (req);
1409 2523
1410void 2524void
1411result (aio_req grp, ...) 2525result (aio_req grp, ...)
1412 CODE: 2526 CODE:
1413{ 2527{
1414 int i; 2528 int i;
2529 AV *av;
2530
2531 grp->errorno = errno;
2532
1415 AV *av = newAV (); 2533 av = newAV ();
2534 av_extend (av, items - 1);
1416 2535
1417 for (i = 1; i < items; ++i ) 2536 for (i = 1; i < items; ++i )
1418 av_push (av, newSVsv (ST (i))); 2537 av_push (av, newSVsv (ST (i)));
1419 2538
1420 SvREFCNT_dec (grp->data); 2539 SvREFCNT_dec (grp->sv1);
1421 grp->data = (SV *)av; 2540 grp->sv1 = (SV *)av;
1422} 2541}
1423 2542
1424void 2543void
2544errno (aio_req grp, int errorno = errno)
2545 CODE:
2546 grp->errorno = errorno;
2547
2548void
1425feed_limit (aio_req grp, int limit) 2549limit (aio_req grp, int limit)
1426 CODE: 2550 CODE:
1427 grp->fd2 = limit; 2551 eio_grp_limit (grp, limit);
1428 aio_grp_feed (grp);
1429 2552
1430void 2553void
1431feed (aio_req grp, SV *callback=&PL_sv_undef) 2554feed (aio_req grp, SV *callback = &PL_sv_undef)
1432 CODE: 2555 CODE:
1433{ 2556{
1434 SvREFCNT_dec (grp->fh2); 2557 SvREFCNT_dec (grp->sv2);
1435 grp->fh2 = newSVsv (callback); 2558 grp->sv2 = newSVsv (callback);
2559 grp->feed = aio_grp_feed;
1436 2560
1437 if (grp->fd2 <= 0) 2561 if (grp->int2 <= 0)
1438 grp->fd2 = 2; 2562 grp->int2 = 2;
1439 2563
1440 aio_grp_feed (grp); 2564 eio_grp_limit (grp, grp->int2);
1441} 2565}
1442 2566

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