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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs.
Revision 1.266 by root, Tue Aug 14 14:03:14 2018 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
9 12
10#include <pthread.h> 13#include <stddef.h>
11 14#include <stdlib.h>
15#include <errno.h>
12#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
13#include <sys/stat.h> 18#include <sys/stat.h>
14
15#include <unistd.h> 19#include <limits.h>
16#include <fcntl.h> 20#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 21#include <sched.h>
19 22
20#if HAVE_SENDFILE 23#if HAVE_SYS_MKDEV_H
21# if __linux
22# include <sys/sendfile.h>
23# elif __freebsd
24# include <sys/socket.h> 24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
26# include <sys/sysmacros.h>
27#endif
28
29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25# include <sys/uio.h> 30# include <sys/mman.h>
26# elif __hpux 31#endif
32
33/* the incompetent fool that created musl keeps __linux__, refuses
34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89
90 #define EIO_STRUCT_STAT struct _stati64
91 #define EIO_STRUCT_STATI64
92
93#else
94
27# include <sys/socket.h> 95 #include <sys/time.h>
28# elif __solaris /* not yet */
29# include <sys/sendfile.h> 96 #include <sys/select.h>
97 #include <unistd.h>
98 #include <utime.h>
99 #include <signal.h>
100
101 #define EIO_STRUCT_STAT Stat_t
102
103#endif
104
105/*****************************************************************************/
106
107#if __GNUC__ >= 3
108# define expect(expr,value) __builtin_expect ((expr),(value))
109#else
110# define expect(expr,value) (expr)
111#endif
112
113#define expect_false(expr) expect ((expr) != 0, 0)
114#define expect_true(expr) expect ((expr) != 0, 1)
115
116/*****************************************************************************/
117
118#include "config.h"
119
120#if HAVE_ST_XTIMENSEC
121# define ATIMENSEC PL_statcache.st_atimensec
122# define MTIMENSEC PL_statcache.st_mtimensec
123# define CTIMENSEC PL_statcache.st_ctimensec
124#elif HAVE_ST_XTIMESPEC
125# define ATIMENSEC PL_statcache.st_atim.tv_nsec
126# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
127# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
128#else
129# define ATIMENSEC 0
130# define MTIMENSEC 0
131# define CTIMENSEC 0
132#endif
133
134#include "schmorp.h"
135
136#if HAVE_EVENTFD
137# include <sys/eventfd.h>
138#endif
139
140#if HAVE_TIMERFD
141# include <sys/timerfd.h>
142#endif
143
144#if HAVE_RLIMITS
145 #include <sys/time.h>
146 #include <sys/resource.h>
147#endif
148
149typedef SV SV8; /* byte-sv, used for argument-checking */
150typedef int aio_rfd; /* read file desriptor */
151typedef int aio_wfd; /* write file descriptor */
152
153static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
154
155#define EIO_REQ_MEMBERS \
156 SV *callback; \
157 SV *sv1, *sv2; \
158 SV *sv3, *sv4; \
159 STRLEN stroffset; \
160 SV *self;
161
162#define EIO_NO_WRAPPERS 1
163
164#include "libeio/eio.h"
165
166static int req_invoke (eio_req *req);
167#define EIO_FINISH(req) req_invoke (req)
168static void req_destroy (eio_req *grp);
169#define EIO_DESTROY(req) req_destroy (req)
170
171#include "libeio/eio.c"
172
173#if !HAVE_POSIX_FADVISE
174# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
175#endif
176
177#if !HAVE_POSIX_MADVISE
178# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
179#endif
180
181#ifndef MAP_ANONYMOUS
182# ifdef MAP_ANON
183# define MAP_ANONYMOUS MAP_ANON
30# else 184# else
31# error sendfile support requested but not available 185# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
32# endif 186# endif
33#endif 187#endif
34 188
35#if __ia64 189#ifndef makedev
36# define STACKSIZE 65536 190# define makedev(maj,min) (((maj) << 8) | (min))
37#else
38# define STACKSIZE 4096
39#endif 191#endif
192#ifndef major
193# define major(dev) ((dev) >> 8)
194#endif
195#ifndef minor
196# define minor(dev) ((dev) & 0xff)
197#endif
40 198
41enum { 199/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
42 REQ_QUIT, 200#ifdef __sun
43 REQ_OPEN, REQ_CLOSE, 201# undef PAGESIZE
44 REQ_READ, REQ_WRITE, REQ_READAHEAD, 202#endif
45 REQ_SENDFILE, 203
46 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 204#if PAGESIZE <= 0
47 REQ_FSYNC, REQ_FDATASYNC, 205# define PAGESIZE sysconf (_SC_PAGESIZE)
48 REQ_UNLINK, REQ_RMDIR, 206#endif
49 REQ_SYMLINK, 207
208/*****************************************************************************/
209
210#if !_POSIX_MAPPED_FILES
211# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
212# define munmap(addr,length) EIO_ENOSYS ()
213#endif
214
215#if !_POSIX_MEMORY_PROTECTION
216# define mprotect(addr,len,prot) EIO_ENOSYS ()
217#endif
218
219#if !MREMAP_MAYMOVE
220# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
221#endif
222
223#define FOREIGN_MAGIC PERL_MAGIC_ext
224
225static int ecb_cold
226mmap_free (pTHX_ SV *sv, MAGIC *mg)
227{
228 int old_errno = errno;
229 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
230 errno = old_errno;
231
232 mg->mg_obj = 0; /* just in case */
233
234 SvREADONLY_off (sv);
235
236 if (SvPVX (sv) != mg->mg_ptr)
237 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
238
239 SvCUR_set (sv, 0);
240 SvPVX (sv) = 0;
241 SvOK_off (sv);
242
243 return 0;
244}
245
246static MGVTBL mmap_vtbl = {
247 0, 0, 0, 0, mmap_free
50}; 248};
51 249
52typedef struct aio_cb { 250static int ecb_cold
53 struct aio_cb *volatile next; 251sysfree_free (pTHX_ SV *sv, MAGIC *mg)
54
55 int type;
56
57 int fd, fd2;
58 off_t offset;
59 size_t length;
60 ssize_t result;
61 mode_t mode; /* open */
62 int errorno;
63 SV *data, *callback;
64 SV *fh, *fh2;
65 void *dataptr, *data2ptr;
66 STRLEN dataoffset;
67
68 Stat_t *statdata;
69} aio_cb;
70
71typedef aio_cb *aio_req;
72
73static int started, wanted;
74static volatile int nreqs;
75static int max_outstanding = 1<<30;
76static int respipe [2];
77
78static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
79static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
80static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81
82static volatile aio_req reqs, reqe; /* queue start, queue end */
83static volatile aio_req ress, rese; /* queue start, queue end */
84
85static void free_req (aio_req req)
86{ 252{
87 if (req->data) 253 free (mg->mg_ptr);
88 SvREFCNT_dec (req->data); 254 mg->mg_obj = 0; /* just in case */
89 255
90 if (req->fh) 256 SvREADONLY_off (sv);
91 SvREFCNT_dec (req->fh);
92 257
93 if (req->fh2) 258 if (SvPVX (sv) != mg->mg_ptr)
94 SvREFCNT_dec (req->fh2); 259 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
95 260
96 if (req->statdata) 261 SvCUR_set (sv, 0);
97 Safefree (req->statdata); 262 SvPVX (sv) = 0;
263 SvOK_off (sv);
98 264
99 if (req->callback) 265 return 0;
100 SvREFCNT_dec (req->callback);
101
102 Safefree (req);
103} 266}
104 267
268static MGVTBL sysfree_vtbl = {
269 0, 0, 0, 0, sysfree_free
270};
271
272/*****************************************************************************/
273
274/* helper: set scalar to foreign ptr with custom free */
105static void 275static void
106poll_wait () 276sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
107{ 277{
108 if (nreqs && !ress) 278 sv_force_normal (sv);
109 {
110 fd_set rfd;
111 FD_ZERO(&rfd);
112 FD_SET(respipe [0], &rfd);
113 279
114 select (respipe [0] + 1, &rfd, 0, 0, 0); 280 /* we store the length in mg_obj, as namlen is I32 :/ */
115 } 281 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
116} 282 ->mg_obj = (SV *)length;
117 283
284 SvUPGRADE (sv, SVt_PV); /* nop... */
285
286 if (SvLEN (sv))
287 Safefree (SvPVX (sv));
288
289 SvPVX (sv) = (char *)addr;
290 SvCUR_set (sv, length);
291 SvLEN_set (sv, 0);
292 SvPOK_only (sv);
293}
294
118static int 295static void
119poll_cb () 296sv_clear_foreign (SV *sv)
120{ 297{
121 dSP; 298 /* todo: iterate over magic and only free ours, but of course */
299 /* the perl5porters will call that (correct) behaviour buggy */
300 sv_unmagic (sv, FOREIGN_MAGIC);
301}
302
303/*****************************************************************************/
304
305/* defines all sorts of constants to 0 unless they are already defined */
306/* also provides const_iv_ and const_niv_ macros for them */
307#include "def0.h"
308
309/*****************************************************************************/
310
311static void
312fiemap (eio_req *req)
313{
314 req->result = -1;
315
316#if HAVE_FIEMAP
317 /* assume some c99 */
318 struct fiemap *fiemap = 0;
319 size_t end_offset;
320 int count = req->int3;
321
322 req->flags |= EIO_FLAG_PTR1_FREE;
323
324 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
325 /* increase in 3.5kb steps */
326 if (count < 0)
122 int count = 0; 327 count = 8;
123 int do_croak = 0; 328
124 aio_req req; 329 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
330 errno = ENOMEM;
331 if (!fiemap)
332 return;
333
334 req->ptr1 = fiemap;
335
336 fiemap->fm_start = req->offs;
337 fiemap->fm_length = req->size;
338 fiemap->fm_flags = req->int2;
339 fiemap->fm_extent_count = count;
340
341 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
342 return;
343
344 if (req->int3 >= 0 /* not autosizing */
345 || !fiemap->fm_mapped_extents /* no more extents */
346 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
347 goto done;
348
349 /* else we have to loop -
350 * it would be tempting (actually I tried that first) to just query the
351 * number of extents needed, but linux often feels like not returning all
352 * extents, without telling us it left any out. this complicates
353 * this quite a bit.
354 */
355
356 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125 357
126 for (;;) 358 for (;;)
127 { 359 {
128 pthread_mutex_lock (&reslock); 360 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
129 req = ress; 361 char scratch[3072];
362 struct fiemap *incmap = (struct fiemap *)scratch;
130 363
364 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
365 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
366 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
367 incmap->fm_flags = fiemap->fm_flags;
368 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
369
370 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
371 return;
372
373 if (!incmap->fm_mapped_extents)
374 goto done;
375
376 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
377 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
378 errno = ENOMEM;
131 if (req) 379 if (!fiemap)
380 return;
381
382 req->ptr1 = fiemap;
383
384 for (count = 0; count < incmap->fm_mapped_extents; ++count)
132 { 385 {
133 ress = req->next; 386 struct fiemap_extent *e = incmap->fm_extents + count;
134 387
135 if (!ress) 388 if (e->fe_logical + e->fe_length >= end_offset)
136 { 389 goto done;
137 /* read any signals sent by the worker threads */
138 char buf [32];
139 while (read (respipe [0], buf, 32) == 32)
140 ;
141 390
142 rese = 0; 391 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
143 } 392
393 if (e->fe_flags & FIEMAP_EXTENT_LAST)
394 goto done;
395
144 } 396 }
397 }
145 398
146 pthread_mutex_unlock (&reslock); 399done:
400 req->result = 0;
147 401
148 if (!req) 402#else
149 break; 403 errno = ENOSYS;
404#endif
405}
150 406
151 nreqs--; 407/*****************************************************************************/
152 408
153 if (req->type == REQ_QUIT) 409enum {
154 started--; 410 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
155 else 411};
412
413typedef eio_req *aio_req;
414typedef eio_req *aio_req_ornot;
415typedef eio_wd aio_wd;
416
417static SV *on_next_submit;
418static int next_pri = EIO_PRI_DEFAULT;
419static int max_outstanding;
420
421static s_epipe respipe;
422
423static void req_destroy (aio_req req);
424static void req_cancel (aio_req req);
425
426static void
427want_poll (void)
428{
429 /* write a dummy byte to the pipe so fh becomes ready */
430 s_epipe_signal (&respipe);
431}
432
433static void
434done_poll (void)
435{
436 /* read any signals sent by the worker threads */
437 s_epipe_drain (&respipe);
438}
439
440/* must be called at most once */
441static SV *
442req_sv (aio_req req, HV *stash)
443{
444 if (!req->self)
445 {
446 req->self = (SV *)newHV ();
447 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
448 }
449
450 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
451}
452
453static SV *
454newSVaio_wd (aio_wd wd)
455{
456 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
457}
458
459static aio_req
460SvAIO_REQ (SV *sv)
461{
462 MAGIC *mg;
463
464 if (!SvROK (sv)
465 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
466 || (SvSTASH (SvRV (sv)) != aio_grp_stash
467 && SvSTASH (SvRV (sv)) != aio_req_stash
468 && !sv_derived_from (sv, "IO::AIO::REQ")))
469 croak ("object of class IO::AIO::REQ expected");
470
471 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
472
473 return mg ? (aio_req)mg->mg_ptr : 0;
474}
475
476static aio_wd
477SvAIO_WD (SV *sv)
478{
479 if (!SvROK (sv)
480 || SvTYPE (SvRV (sv)) != SVt_PVMG
481 || SvSTASH (SvRV (sv)) != aio_wd_stash)
482 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
483
484 return (aio_wd)(long)SvIVX (SvRV (sv));
485}
486
487static SV *
488newmortalFH (int fd, int flags)
489{
490 if (fd < 0)
491 return &PL_sv_undef;
492
493 GV *gv = (GV *)sv_newmortal ();
494 char sym[64];
495 int symlen;
496
497 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
498 gv_init (gv, aio_stash, sym, symlen, 0);
499
500 symlen = snprintf (
501 sym,
502 sizeof (sym),
503 "%s&=%d",
504 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
505 fd
506 );
507
508 return do_open (gv, sym, symlen, 0, 0, 0, 0)
509 ? (SV *)gv : &PL_sv_undef;
510}
511
512static void
513aio_grp_feed (aio_req grp)
514{
515 if (grp->sv2 && SvOK (grp->sv2))
516 {
517 dSP;
518
519 ENTER;
520 SAVETMPS;
521 PUSHMARK (SP);
522 XPUSHs (req_sv (grp, aio_grp_stash));
523 PUTBACK;
524 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
525 SPAGAIN;
526 FREETMPS;
527 LEAVE;
528 }
529}
530
531static void
532req_submit (eio_req *req)
533{
534 eio_submit (req);
535
536 if (expect_false (on_next_submit))
537 {
538 dSP;
539 SV *cb = sv_2mortal (on_next_submit);
540
541 on_next_submit = 0;
542
543 PUSHMARK (SP);
544 PUTBACK;
545 call_sv (cb, G_DISCARD | G_EVAL);
546 }
547}
548
549static int
550req_invoke (eio_req *req)
551{
552 if (req->flags & FLAG_SV2_RO_OFF)
553 SvREADONLY_off (req->sv2);
554
555 if (!EIO_CANCELLED (req) && req->callback)
556 {
557 dSP;
558 static SV *sv_result_cache; /* caches the result integer SV */
559 SV *sv_result;
560
561 ENTER;
562 SAVETMPS;
563 PUSHMARK (SP);
564 EXTEND (SP, 1);
565
566 /* do not recreate the result IV from scratch each time */
567 if (expect_true (sv_result_cache))
156 { 568 {
157 int errorno = errno; 569 sv_result = sv_result_cache; sv_result_cache = 0;
158 errno = req->errorno; 570 SvIV_set (sv_result, req->result);
159 571 SvIOK_only (sv_result);
160 if (req->type == REQ_READ)
161 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162
163 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
164 SvREADONLY_off (req->data);
165
166 if (req->statdata)
167 {
168 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169 PL_laststatval = req->result;
170 PL_statcache = *(req->statdata);
171 }
172
173 ENTER;
174 PUSHMARK (SP);
175 XPUSHs (sv_2mortal (newSViv (req->result)));
176
177 if (req->type == REQ_OPEN)
178 {
179 /* convert fd to fh */
180 SV *fh;
181
182 PUTBACK;
183 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
184 SPAGAIN;
185
186 fh = SvREFCNT_inc (POPs);
187
188 PUSHMARK (SP);
189 XPUSHs (sv_2mortal (fh));
190 }
191
192 if (SvOK (req->callback))
193 {
194 PUTBACK;
195 call_sv (req->callback, G_VOID | G_EVAL);
196 SPAGAIN;
197
198 if (SvTRUE (ERRSV))
199 {
200 free_req (req);
201 croak (0);
202 }
203 }
204
205 LEAVE;
206
207 errno = errorno;
208 count++;
209 }
210
211 free_req (req);
212 }
213
214 return count;
215}
216
217static void *aio_proc(void *arg);
218
219static void
220start_thread (void)
221{
222 sigset_t fullsigset, oldsigset;
223 pthread_t tid;
224 pthread_attr_t attr;
225
226 pthread_attr_init (&attr);
227 pthread_attr_setstacksize (&attr, STACKSIZE);
228 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
229
230 sigfillset (&fullsigset);
231 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
232
233 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
234 started++;
235
236 sigprocmask (SIG_SETMASK, &oldsigset, 0);
237}
238
239static void
240send_req (aio_req req)
241{
242 while (started < wanted && nreqs >= started)
243 start_thread ();
244
245 nreqs++;
246
247 pthread_mutex_lock (&reqlock);
248
249 req->next = 0;
250
251 if (reqe)
252 {
253 reqe->next = req;
254 reqe = req;
255 }
256 else
257 reqe = reqs = req;
258
259 pthread_cond_signal (&reqwait);
260 pthread_mutex_unlock (&reqlock);
261
262 if (nreqs > max_outstanding)
263 for (;;)
264 {
265 poll_cb ();
266
267 if (nreqs <= max_outstanding)
268 break;
269
270 poll_wait ();
271 }
272}
273
274static void
275end_thread (void)
276{
277 aio_req req;
278 Newz (0, req, 1, aio_cb);
279 req->type = REQ_QUIT;
280
281 send_req (req);
282}
283
284static void min_parallel (int nthreads)
285{
286 if (wanted < nthreads)
287 wanted = nthreads;
288}
289
290static void max_parallel (int nthreads)
291{
292 int cur = started;
293
294 if (wanted > nthreads)
295 wanted = nthreads;
296
297 while (cur > wanted)
298 {
299 end_thread ();
300 cur--;
301 }
302
303 while (started > wanted)
304 {
305 poll_wait ();
306 poll_cb ();
307 }
308}
309
310static void create_pipe ()
311{
312 if (pipe (respipe))
313 croak ("unable to initialize result pipe");
314
315 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316 croak ("cannot set result pipe to nonblocking mode");
317
318 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319 croak ("cannot set result pipe to nonblocking mode");
320}
321
322static void atfork_prepare (void)
323{
324 pthread_mutex_lock (&reqlock);
325 pthread_mutex_lock (&reslock);
326}
327
328static void atfork_parent (void)
329{
330 pthread_mutex_unlock (&reslock);
331 pthread_mutex_unlock (&reqlock);
332}
333
334static void atfork_child (void)
335{
336 aio_req prv;
337
338 started = 0;
339
340 while (reqs)
341 {
342 prv = reqs;
343 reqs = prv->next;
344 free_req (prv);
345 }
346
347 reqs = reqe = 0;
348
349 while (ress)
350 {
351 prv = ress;
352 ress = prv->next;
353 free_req (prv);
354 }
355
356 ress = rese = 0;
357
358 close (respipe [0]);
359 close (respipe [1]);
360 create_pipe ();
361
362 atfork_parent ();
363}
364
365/*****************************************************************************/
366/* work around various missing functions */
367
368#if !HAVE_PREADWRITE
369# define pread aio_pread
370# define pwrite aio_pwrite
371
372/*
373 * make our pread/pwrite safe against themselves, but not against
374 * normal read/write by using a mutex. slows down execution a lot,
375 * but that's your problem, not mine.
376 */
377static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
378
379static ssize_t
380pread (int fd, void *buf, size_t count, off_t offset)
381{
382 ssize_t res;
383 off_t ooffset;
384
385 pthread_mutex_lock (&iolock);
386 ooffset = lseek (fd, 0, SEEK_CUR);
387 lseek (fd, offset, SEEK_SET);
388 res = read (fd, buf, count);
389 lseek (fd, ooffset, SEEK_SET);
390 pthread_mutex_unlock (&iolock);
391
392 return res;
393}
394
395static ssize_t
396pwrite (int fd, void *buf, size_t count, off_t offset)
397{
398 ssize_t res;
399 off_t ooffset;
400
401 pthread_mutex_lock (&iolock);
402 ooffset = lseek (fd, 0, SEEK_CUR);
403 lseek (fd, offset, SEEK_SET);
404 res = write (fd, buf, count);
405 lseek (fd, offset, SEEK_SET);
406 pthread_mutex_unlock (&iolock);
407
408 return res;
409}
410#endif
411
412#if !HAVE_FDATASYNC
413# define fdatasync fsync
414#endif
415
416#if !HAVE_READAHEAD
417# define readahead aio_readahead
418
419static char readahead_buf[4096];
420
421static ssize_t
422readahead (int fd, off_t offset, size_t count)
423{
424 while (count > 0)
425 {
426 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
427
428 pread (fd, readahead_buf, len, offset);
429 offset += len;
430 count -= len;
431 }
432
433 errno = 0;
434}
435#endif
436
437/* sendfile always needs emulation */
438static ssize_t
439sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440{
441 ssize_t res;
442
443 if (!count)
444 return 0;
445
446#if HAVE_SENDFILE
447# if __linux
448 res = sendfile (ofd, ifd, &offset, count);
449
450# elif __freebsd
451 /*
452 * Of course, the freebsd sendfile is a dire hack with no thoughts
453 * wasted on making it similar to other I/O functions.
454 */
455 {
456 off_t sbytes;
457 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458
459 if (res < 0 && sbytes)
460 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461 res = sbytes;
462 }
463
464# elif __hpux
465 res = sendfile (ofd, ifd, offset, count, 0, 0);
466
467# elif __solaris
468 {
469 struct sendfilevec vec;
470 size_t sbytes;
471
472 vec.sfv_fd = ifd;
473 vec.sfv_flag = 0;
474 vec.sfv_off = offset;
475 vec.sfv_len = count;
476
477 res = sendfilev (ofd, &vec, 1, &sbytes);
478
479 if (res < 0 && sbytes)
480 res = sbytes;
481 }
482
483# else
484 res = -1;
485 errno = ENOSYS;
486# endif
487#endif
488
489 if (res < 0
490 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
491#if __solaris
492 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
493#endif
494 )
495 )
496 {
497 /* emulate sendfile. this is a major pain in the ass */
498 char *buf = malloc (4096);
499 res = 0;
500
501 for (;;)
502 {
503 ssize_t cnt;
504
505 cnt = pread (ifd, buf, 4096, offset);
506
507 if (cnt <= 0)
508 {
509 if (cnt && !res) res = -1;
510 break;
511 }
512
513 cnt = write (ofd, buf, cnt);
514
515 if (cnt <= 0)
516 {
517 if (cnt && !res) res = -1;
518 break;
519 }
520
521 offset += cnt;
522 res += cnt;
523 }
524
525 {
526 int errorno = errno;
527 free (buf);
528 errno = errorno;
529 }
530 }
531
532 return res;
533}
534
535/*****************************************************************************/
536
537static void *
538aio_proc (void *thr_arg)
539{
540 aio_req req;
541 int type;
542
543 do
544 {
545 pthread_mutex_lock (&reqlock);
546
547 for (;;)
548 {
549 req = reqs;
550
551 if (reqs)
552 {
553 reqs = reqs->next;
554 if (!reqs) reqe = 0;
555 }
556
557 if (req)
558 break;
559
560 pthread_cond_wait (&reqwait, &reqlock);
561 }
562
563 pthread_mutex_unlock (&reqlock);
564
565 errno = 0; /* strictly unnecessary */
566
567 type = req->type;
568
569 switch (type)
570 {
571 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
572 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
573
574 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
575 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
576
577 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580
581 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
582 case REQ_CLOSE: req->result = close (req->fd); break;
583 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
585 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586
587 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588 case REQ_FSYNC: req->result = fsync (req->fd); break;
589
590 case REQ_QUIT:
591 break;
592
593 default:
594 req->result = ENOSYS;
595 break;
596 }
597
598 req->errorno = errno;
599
600 pthread_mutex_lock (&reslock);
601
602 req->next = 0;
603
604 if (rese)
605 {
606 rese->next = req;
607 rese = req;
608 } 572 }
609 else 573 else
610 { 574 {
611 rese = ress = req; 575 sv_result = newSViv (req->result);
612 576 SvREADONLY_on (sv_result);
613 /* write a dummy byte to the pipe so fh becomes ready */
614 write (respipe [1], &respipe, 1);
615 } 577 }
616 578
617 pthread_mutex_unlock (&reslock); 579 switch (req->type)
580 {
581 case EIO_WD_OPEN:
582 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
583 break;
584
585 case EIO_READDIR:
586 {
587 SV *rv = &PL_sv_undef;
588
589 if (req->result >= 0)
590 {
591 int i;
592 char *names = (char *)req->ptr2;
593 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
594 AV *av = newAV ();
595
596 av_extend (av, req->result - 1);
597
598 for (i = 0; i < req->result; ++i)
599 {
600 if (req->int1 & EIO_READDIR_DENTS)
601 {
602 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
603
604 if (req->int1 & EIO_READDIR_CUSTOM2)
605 {
606 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
607 AV *avent = newAV ();
608
609 av_extend (avent, 2);
610
611 if (!sv_type [ent->type])
612 {
613 sv_type [ent->type] = newSViv (ent->type);
614 SvREADONLY_on (sv_type [ent->type]);
615 }
616
617 av_store (avent, 0, namesv);
618 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
619 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
620
621 av_store (av, i, newRV_noinc ((SV *)avent));
622 }
623 else
624 av_store (av, i, namesv);
625
626 ++ent;
627 }
628 else
629 {
630 SV *name = newSVpv (names, 0);
631 av_store (av, i, name);
632 names += SvCUR (name) + 1;
633 }
634 }
635
636 rv = sv_2mortal (newRV_noinc ((SV *)av));
637 }
638
639 PUSHs (rv);
640
641 if (req->int1 & EIO_READDIR_CUSTOM1)
642 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
643 }
644 break;
645
646 case EIO_OPEN:
647 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
648 break;
649
650 case EIO_STATVFS:
651 case EIO_FSTATVFS:
652 {
653 SV *rv = &PL_sv_undef;
654
655#ifndef _WIN32
656 if (req->result >= 0)
657 {
658 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
659 HV *hv = newHV ();
660 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
661 * chooses to make it a struct.
662 */
663 unsigned long fsid = 0;
664 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
665
666 rv = sv_2mortal (newRV_noinc ((SV *)hv));
667
668 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
669 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
670 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
671 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
672 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
673 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
674 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
675 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
676 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
677 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
678 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
679 }
680#endif
681
682 PUSHs (rv);
683 }
684
685 break;
686
687 case EIO_GROUP:
688 req->int1 = 2; /* mark group as finished */
689
690 if (req->sv1)
691 {
692 int i;
693 AV *av = (AV *)req->sv1;
694
695 EXTEND (SP, AvFILL (av) + 1);
696 for (i = 0; i <= AvFILL (av); ++i)
697 PUSHs (*av_fetch (av, i, 0));
698 }
699 break;
700
701 case EIO_NOP:
702 case EIO_BUSY:
703 break;
704
705 case EIO_READLINK:
706 case EIO_REALPATH:
707 if (req->result > 0)
708 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
709 break;
710
711 case EIO_STAT:
712 case EIO_LSTAT:
713 case EIO_FSTAT:
714 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
715
716 if (!(PL_laststatval = req->result))
717 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
718 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
719
720 PUSHs (sv_result);
721 break;
722
723 case EIO_SEEK:
724 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
725 break;
726
727 case EIO_READ:
728 {
729 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
730 *SvEND (req->sv2) = 0;
731 SvPOK_only (req->sv2);
732 SvSETMAGIC (req->sv2);
733 PUSHs (sv_result);
734 }
735 break;
736
737 case EIO_SLURP:
738 {
739 if (req->result >= 0)
740 {
741 /* if length was originally not known, we steal the malloc'ed memory */
742 if (req->flags & EIO_FLAG_PTR2_FREE)
743 {
744 req->flags &= ~EIO_FLAG_PTR2_FREE;
745 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
746 }
747 else
748 {
749 SvCUR_set (req->sv2, req->result);
750 *SvEND (req->sv2) = 0;
751 SvPOK_only (req->sv2);
752 }
753
754 SvSETMAGIC (req->sv2);
755 }
756
757 PUSHs (sv_result);
758 }
759 break;
760
761 case EIO_CUSTOM:
762 if (req->feed == fiemap)
763 {
764#if HAVE_FIEMAP
765 if (!req->result)
766 {
767 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
768
769 if (fiemap->fm_extent_count)
770 {
771 AV *av = newAV ();
772 int i;
773
774 while (fiemap->fm_mapped_extents)
775 {
776 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
777 AV *ext_av = newAV ();
778
779 av_store (ext_av, 3, newSVuv (extent->fe_flags));
780 av_store (ext_av, 2, newSVval64 (extent->fe_length));
781 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
782 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
783
784 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
785 }
786
787 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
788 }
789 else
790 {
791 SvIV_set (sv_result, fiemap->fm_mapped_extents);
792 PUSHs (sv_result);
793 }
794 }
795#endif
796 }
797 else
798 PUSHs (sv_result);
799 break;
800
801 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
802 if (req->result > 0)
803 SvIV_set (sv_result, 0);
804 /* FALLTHROUGH */
805
806 default:
807 PUSHs (sv_result);
808 break;
809 }
810
811 errno = req->errorno;
812
813 PUTBACK;
814 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
815 SPAGAIN;
816
817 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
818 SvREFCNT_dec (sv_result);
819 else
820 sv_result_cache = sv_result;
821
822 FREETMPS;
823 LEAVE;
824
825 PUTBACK;
618 } 826 }
619 while (type != REQ_QUIT);
620 827
828 return !!SvTRUE (ERRSV);
829}
830
831static void
832req_destroy (aio_req req)
833{
834 if (req->self)
835 {
836 sv_unmagic (req->self, PERL_MAGIC_ext);
837 SvREFCNT_dec (req->self);
838 }
839
840 SvREFCNT_dec (req->sv1);
841 SvREFCNT_dec (req->sv2);
842 SvREFCNT_dec (req->sv3);
843 SvREFCNT_dec (req->sv4);
844 SvREFCNT_dec (req->callback);
845
846 free (req);
847}
848
849static void
850req_cancel_subs (aio_req grp)
851{
852 if (grp->type != EIO_GROUP)
853 return;
854
855 SvREFCNT_dec (grp->sv2);
856 grp->sv2 = 0;
857
858 eio_grp_cancel (grp);
859}
860
861static void ecb_cold
862create_respipe (void)
863{
864 if (s_epipe_renew (&respipe))
865 croak ("IO::AIO: unable to initialize result pipe");
866}
867
868static void
869poll_wait (void)
870{
871 while (eio_nreqs ())
872 {
873 int size;
874
875 X_LOCK (EIO_POOL->reslock);
876 size = EIO_POOL->res_queue.size;
877 X_UNLOCK (EIO_POOL->reslock);
878
879 if (size)
880 return;
881
882 etp_maybe_start_thread (EIO_POOL);
883
884 s_epipe_wait (&respipe);
885 }
886}
887
888static int
889poll_cb (void)
890{
891 for (;;)
892 {
893 int res = eio_poll ();
894
895 if (res > 0)
896 croak (0);
897
898 if (!max_outstanding || max_outstanding > eio_nreqs ())
899 return res;
900
901 poll_wait ();
902 }
903}
904
905static void ecb_cold
906reinit (void)
907{
908 create_respipe ();
909
910 if (eio_init (want_poll, done_poll) < 0)
911 croak ("IO::AIO: unable to initialise eio library");
912}
913
914/*****************************************************************************/
915
916static SV *
917get_cb (SV *cb_sv)
918{
919 SvGETMAGIC (cb_sv);
920 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
921}
922
923static aio_req ecb_noinline
924dreq (SV *callback)
925{
926 SV *cb_cv;
927 aio_req req;
928 int req_pri = next_pri;
929 next_pri = EIO_PRI_DEFAULT;
930
931 cb_cv = get_cb (callback);
932
933 req = calloc (sizeof (*req), 1);
934 if (!req)
935 croak ("out of memory during eio_req allocation");
936
937 req->callback = SvREFCNT_inc (cb_cv);
938 req->pri = req_pri;
939
621 return 0; 940 return req;
622} 941}
623 942
624#define dREQ \ 943#define dREQ \
625 aio_req req; \ 944 aio_req req = dreq (callback); \
945
946#define REQ_SEND \
947 PUTBACK; \
948 req_submit (req); \
949 SPAGAIN; \
626 \ 950 \
627 if (SvOK (callback) && !SvROK (callback)) \ 951 if (GIMME_V != G_VOID) \
628 croak ("clalback must be undef or of reference type"); \ 952 XPUSHs (req_sv (req, aio_req_stash));
629 \ 953
630 Newz (0, req, 1, aio_cb); \ 954ecb_inline void
631 if (!req) \ 955req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
632 croak ("out of memory during aio_req allocation"); \ 956{
633 \ 957 if (expect_false (SvROK (path)))
634 req->callback = newSVsv (callback); 958 {
635 959 SV *rv = SvRV (path);
960 SV *wdob;
961
962 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
963 {
964 path = AvARRAY (rv)[1];
965 wdob = AvARRAY (rv)[0];
966
967 if (SvOK (wdob))
968 {
969 *wd = SvAIO_WD (wdob);
970 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
971 }
972 else
973 *wd = EIO_INVALID_WD;
974 }
975 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
976 {
977 *wd = (aio_wd)(long)SvIVX (rv);
978 *wdsv = SvREFCNT_inc_NN (rv);
979 *ptr = ".";
980 return; /* path set to "." */
981 }
982 else
983 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
984 }
985
986 *pathsv = newSVsv (path);
987 *ptr = SvPVbyte_nolen (*pathsv);
988}
989
990static void ecb_noinline
991req_set_path1 (aio_req req, SV *path)
992{
993 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
994}
995
996static void ecb_noinline
997req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
998{
999 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1000
1001 switch (SvTYPE (rv))
1002 {
1003 case SVt_PVIO:
1004 case SVt_PVLV:
1005 case SVt_PVGV:
1006 req->type = type_fh;
1007 req->sv1 = newSVsv (fh_or_path);
1008 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1009 break;
1010
1011 default:
1012 req->type = type_path;
1013 req_set_path1 (req, fh_or_path);
1014 break;
1015 }
1016}
1017
1018/*****************************************************************************/
1019
1020static void
1021ts_set (struct timespec *ts, NV value)
1022{
1023 ts->tv_sec = value;
1024 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
1025}
1026
1027static NV
1028ts_get (const struct timespec *ts)
1029{
1030 return ts->tv_sec + ts->tv_nsec * 1e-9;
1031}
1032
1033/*****************************************************************************/
1034
1035XS(boot_IO__AIO) ecb_cold;
1036
636MODULE = IO::AIO PACKAGE = IO::AIO 1037MODULE = IO::AIO PACKAGE = IO::AIO
637 1038
638PROTOTYPES: ENABLE 1039PROTOTYPES: ENABLE
639 1040
640BOOT: 1041BOOT:
641{ 1042{
642 create_pipe (); 1043 static const struct {
643 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1044 const char *name;
644} 1045 IV iv;
1046 } *civ, const_iv[] = {
1047# define const_niv(name, value) { # name, (IV) value },
1048# define const_iv(name) { # name, (IV) name },
1049# define const_eio(name) { # name, (IV) EIO_ ## name },
645 1050
1051 /* you have to re-run ./gendef0 after adding/removing any constants here */
1052 /* the first block can be undef if missing */
1053 const_iv (ENOSYS)
1054 const_iv (EXDEV)
1055 const_iv (EBADR)
1056
1057 /* for lseek */
1058 const_iv (SEEK_DATA)
1059 const_iv (SEEK_HOLE)
1060
1061 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1062 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1063 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1064 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1065 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1066 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1067
1068 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1069 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1070 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1071 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1072 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1073
1074 /* the second block will be 0 when missing */
1075 const_iv (O_ACCMODE)
1076
1077 const_iv (O_RDONLY)
1078 const_iv (O_WRONLY)
1079 const_iv (O_RDWR)
1080 const_iv (O_CREAT)
1081 const_iv (O_TRUNC)
1082 const_iv (O_EXCL)
1083 const_iv (O_APPEND)
1084
1085 const_iv (O_ASYNC)
1086 const_iv (O_DIRECT)
1087 const_iv (O_NOATIME)
1088
1089 const_iv (O_CLOEXEC)
1090 const_iv (O_NOCTTY)
1091 const_iv (O_NOFOLLOW)
1092 const_iv (O_NONBLOCK)
1093 const_iv (O_EXEC)
1094 const_iv (O_SEARCH)
1095 const_iv (O_DIRECTORY)
1096 const_iv (O_DSYNC)
1097 const_iv (O_RSYNC)
1098 const_iv (O_SYNC)
1099 const_iv (O_PATH)
1100 const_iv (O_TMPFILE)
1101 const_iv (O_TTY_INIT)
1102
1103 const_iv (S_IFIFO)
1104 const_iv (S_IFCHR)
1105 const_iv (S_IFBLK)
1106 const_iv (S_IFLNK)
1107 const_iv (S_IFREG)
1108 const_iv (S_IFDIR)
1109 const_iv (S_IFWHT)
1110 const_iv (S_IFSOCK)
1111 const_iv (S_IFMT)
1112
1113 const_iv (ST_RDONLY)
1114 const_iv (ST_NOSUID)
1115 const_iv (ST_NODEV)
1116 const_iv (ST_NOEXEC)
1117 const_iv (ST_SYNCHRONOUS)
1118 const_iv (ST_MANDLOCK)
1119 const_iv (ST_WRITE)
1120 const_iv (ST_APPEND)
1121 const_iv (ST_IMMUTABLE)
1122 const_iv (ST_NOATIME)
1123 const_iv (ST_NODIRATIME)
1124 const_iv (ST_RELATIME)
1125
1126 const_iv (PROT_NONE)
1127 const_iv (PROT_EXEC)
1128 const_iv (PROT_READ)
1129 const_iv (PROT_WRITE)
1130
1131 const_iv (MAP_PRIVATE)
1132 const_iv (MAP_SHARED)
1133 const_iv (MAP_FIXED)
1134 const_iv (MAP_ANONYMOUS)
1135
1136 /* linuxish */
1137 const_iv (MAP_LOCKED)
1138 const_iv (MAP_NORESERVE)
1139 const_iv (MAP_POPULATE)
1140 const_iv (MAP_NONBLOCK)
1141 const_iv (MAP_GROWSDOWN)
1142 const_iv (MAP_32BIT)
1143 const_iv (MAP_HUGETLB)
1144 const_iv (MAP_STACK)
1145
1146 const_iv (MREMAP_MAYMOVE)
1147 const_iv (MREMAP_FIXED)
1148
1149 const_iv (F_DUPFD_CLOEXEC)
1150
1151 const_iv (MSG_CMSG_CLOEXEC)
1152 const_iv (SOCK_CLOEXEC)
1153
1154 const_iv (F_OFD_GETLK)
1155 const_iv (F_OFD_SETLK)
1156 const_iv (F_OFD_GETLKW)
1157
1158 const_iv (FIFREEZE)
1159 const_iv (FITHAW)
1160 const_iv (FITRIM)
1161 const_iv (FICLONE)
1162 const_iv (FICLONERANGE)
1163 const_iv (FIDEDUPERANGE)
1164
1165 const_iv (FS_IOC_GETFLAGS)
1166 const_iv (FS_IOC_SETFLAGS)
1167 const_iv (FS_IOC_GETVERSION)
1168 const_iv (FS_IOC_SETVERSION)
1169 const_iv (FS_IOC_FIEMAP)
1170 const_iv (FS_IOC_FSGETXATTR)
1171 const_iv (FS_IOC_FSSETXATTR)
1172 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1173 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1174 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1175
1176 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1177
1178 const_iv (FS_SECRM_FL)
1179 const_iv (FS_UNRM_FL)
1180 const_iv (FS_COMPR_FL)
1181 const_iv (FS_SYNC_FL)
1182 const_iv (FS_IMMUTABLE_FL)
1183 const_iv (FS_APPEND_FL)
1184 const_iv (FS_NODUMP_FL)
1185 const_iv (FS_NOATIME_FL)
1186 const_iv (FS_DIRTY_FL)
1187 const_iv (FS_COMPRBLK_FL)
1188 const_iv (FS_NOCOMP_FL)
1189 const_iv (FS_ENCRYPT_FL)
1190 const_iv (FS_BTREE_FL)
1191 const_iv (FS_INDEX_FL)
1192 const_iv (FS_JOURNAL_DATA_FL)
1193 const_iv (FS_NOTAIL_FL)
1194 const_iv (FS_DIRSYNC_FL)
1195 const_iv (FS_TOPDIR_FL)
1196 const_iv (FS_FL_USER_MODIFIABLE)
1197
1198 const_iv (FS_XFLAG_REALTIME)
1199 const_iv (FS_XFLAG_PREALLOC)
1200 const_iv (FS_XFLAG_IMMUTABLE)
1201 const_iv (FS_XFLAG_APPEND)
1202 const_iv (FS_XFLAG_SYNC)
1203 const_iv (FS_XFLAG_NOATIME)
1204 const_iv (FS_XFLAG_NODUMP)
1205 const_iv (FS_XFLAG_RTINHERIT)
1206 const_iv (FS_XFLAG_PROJINHERIT)
1207 const_iv (FS_XFLAG_NOSYMLINKS)
1208 const_iv (FS_XFLAG_EXTSIZE)
1209 const_iv (FS_XFLAG_EXTSZINHERIT)
1210 const_iv (FS_XFLAG_NODEFRAG)
1211 const_iv (FS_XFLAG_FILESTREAM)
1212 const_iv (FS_XFLAG_DAX)
1213 const_iv (FS_XFLAG_HASATTR)
1214
1215 const_iv (FIEMAP_FLAG_SYNC)
1216 const_iv (FIEMAP_FLAG_XATTR)
1217 const_iv (FIEMAP_FLAGS_COMPAT)
1218 const_iv (FIEMAP_EXTENT_LAST)
1219 const_iv (FIEMAP_EXTENT_UNKNOWN)
1220 const_iv (FIEMAP_EXTENT_DELALLOC)
1221 const_iv (FIEMAP_EXTENT_ENCODED)
1222 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1223 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1224 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1225 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1226 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1227 const_iv (FIEMAP_EXTENT_MERGED)
1228 const_iv (FIEMAP_EXTENT_SHARED)
1229
1230 const_iv (SPLICE_F_MOVE)
1231 const_iv (SPLICE_F_NONBLOCK)
1232 const_iv (SPLICE_F_MORE)
1233 const_iv (SPLICE_F_GIFT)
1234
1235 const_iv (EFD_CLOEXEC)
1236 const_iv (EFD_NONBLOCK)
1237 const_iv (EFD_SEMAPHORE)
1238
1239 const_iv (CLOCK_REALTIME)
1240 const_iv (CLOCK_MONOTONIC)
1241 const_iv (CLOCK_BOOTTIME)
1242 const_iv (CLOCK_REALTIME_ALARM)
1243 const_iv (CLOCK_BOOTTIME_ALARM)
1244
1245 const_iv (TFD_NONBLOCK)
1246 const_iv (TFD_CLOEXEC)
1247
1248 const_iv (TFD_TIMER_ABSTIME)
1249 const_iv (TFD_TIMER_CANCEL_ON_SET)
1250
1251 /* these are libeio constants, and are independent of gendef0 */
1252 const_eio (SEEK_SET)
1253 const_eio (SEEK_CUR)
1254 const_eio (SEEK_END)
1255
1256 const_eio (MCL_FUTURE)
1257 const_eio (MCL_CURRENT)
1258
1259 const_eio (MS_ASYNC)
1260 const_eio (MS_INVALIDATE)
1261 const_eio (MS_SYNC)
1262
1263 const_eio (MT_MODIFY)
1264
1265 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1266 const_eio (SYNC_FILE_RANGE_WRITE)
1267 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1268
1269 const_eio (FALLOC_FL_KEEP_SIZE)
1270 const_eio (FALLOC_FL_PUNCH_HOLE)
1271 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1272 const_eio (FALLOC_FL_ZERO_RANGE)
1273 const_eio (FALLOC_FL_INSERT_RANGE)
1274 const_eio (FALLOC_FL_UNSHARE_RANGE)
1275
1276 const_eio (RENAME_NOREPLACE)
1277 const_eio (RENAME_EXCHANGE)
1278 const_eio (RENAME_WHITEOUT)
1279
1280 const_eio (READDIR_DENTS)
1281 const_eio (READDIR_DIRS_FIRST)
1282 const_eio (READDIR_STAT_ORDER)
1283 const_eio (READDIR_FOUND_UNKNOWN)
1284
1285 const_eio (DT_UNKNOWN)
1286 const_eio (DT_FIFO)
1287 const_eio (DT_CHR)
1288 const_eio (DT_DIR)
1289 const_eio (DT_BLK)
1290 const_eio (DT_REG)
1291 const_eio (DT_LNK)
1292 const_eio (DT_SOCK)
1293 const_eio (DT_WHT)
1294 };
1295
1296 aio_stash = gv_stashpv ("IO::AIO" , 1);
1297 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1298 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1299 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1300
1301 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1302 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1303
1304 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1305
1306 reinit ();
1307}
1308
646void 1309void
647min_parallel(nthreads) 1310reinit ()
648 int nthreads 1311 PROTOTYPE:
1312
1313void
1314max_poll_reqs (unsigned int nreqs)
649 PROTOTYPE: $ 1315 PROTOTYPE: $
1316 CODE:
1317 eio_set_max_poll_reqs (nreqs);
650 1318
651void 1319void
652max_parallel(nthreads) 1320max_poll_time (double nseconds)
653 int nthreads
654 PROTOTYPE: $ 1321 PROTOTYPE: $
655
656int
657max_outstanding(nreqs)
658 int nreqs
659 PROTOTYPE: $
660 CODE: 1322 CODE:
661 RETVAL = max_outstanding; 1323 eio_set_max_poll_time (nseconds);
1324
1325void
1326min_parallel (unsigned int nthreads)
1327 PROTOTYPE: $
1328 CODE:
1329 eio_set_min_parallel (nthreads);
1330
1331void
1332max_parallel (unsigned int nthreads)
1333 PROTOTYPE: $
1334 CODE:
1335 eio_set_max_parallel (nthreads);
1336
1337void
1338max_idle (unsigned int nthreads)
1339 PROTOTYPE: $
1340 CODE:
1341 eio_set_max_idle (nthreads);
1342
1343void
1344idle_timeout (unsigned int seconds)
1345 PROTOTYPE: $
1346 CODE:
1347 eio_set_idle_timeout (seconds);
1348
1349void
1350max_outstanding (unsigned int maxreqs)
1351 PROTOTYPE: $
1352 CODE:
662 max_outstanding = nreqs; 1353 max_outstanding = maxreqs;
663 1354
664void 1355void
665aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1356aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
666 SV * pathname
667 int flags
668 int mode
669 SV * callback
670 PROTOTYPE: $$$;$
671 CODE: 1357 PPCODE:
672{ 1358{
673 dREQ; 1359 dREQ;
674 1360
1361 req->type = EIO_WD_OPEN;
1362 req_set_path1 (req, pathname);
1363
1364 REQ_SEND;
1365}
1366
1367void
1368aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1369 PPCODE:
1370{
1371 dREQ;
1372
675 req->type = REQ_OPEN; 1373 req->type = EIO_OPEN;
676 req->data = newSVsv (pathname); 1374 req_set_path1 (req, pathname);
677 req->dataptr = SvPVbyte_nolen (req->data);
678 req->fd = flags; 1375 req->int1 = flags;
679 req->mode = mode; 1376 req->int2 = mode;
680 1377
681 send_req (req); 1378 REQ_SEND;
682} 1379}
683 1380
684void 1381void
685aio_close(fh,callback=&PL_sv_undef) 1382aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
686 SV * fh
687 SV * callback
688 PROTOTYPE: $;$
689 ALIAS: 1383 ALIAS:
690 aio_close = REQ_CLOSE
691 aio_fsync = REQ_FSYNC 1384 aio_fsync = EIO_FSYNC
692 aio_fdatasync = REQ_FDATASYNC 1385 aio_fdatasync = EIO_FDATASYNC
1386 aio_syncfs = EIO_SYNCFS
693 CODE: 1387 PPCODE:
694{ 1388{
1389 int fd = s_fileno_croak (fh, 0);
695 dREQ; 1390 dREQ;
696 1391
697 req->type = ix; 1392 req->type = ix;
698 req->fh = newSVsv (fh); 1393 req->sv1 = newSVsv (fh);
699 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1394 req->int1 = fd;
700 1395
701 send_req (req); 1396 REQ_SEND;
702} 1397}
703 1398
704void 1399void
1400aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1401 PPCODE:
1402{
1403 int fd = s_fileno_croak (fh, 0);
1404 dREQ;
1405
1406 req->type = EIO_SYNC_FILE_RANGE;
1407 req->sv1 = newSVsv (fh);
1408 req->int1 = fd;
1409 req->offs = offset;
1410 req->size = nbytes;
1411 req->int2 = flags;
1412
1413 REQ_SEND;
1414}
1415
1416void
1417aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1418 PPCODE:
1419{
1420 int fd = s_fileno_croak (fh, 0);
1421 dREQ;
1422
1423 req->type = EIO_FALLOCATE;
1424 req->sv1 = newSVsv (fh);
1425 req->int1 = fd;
1426 req->int2 = mode;
1427 req->offs = offset;
1428 req->size = len;
1429
1430 REQ_SEND;
1431}
1432
1433void
1434aio_close (SV *fh, SV *callback = &PL_sv_undef)
1435 PPCODE:
1436{
1437 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1438 int fd = s_fileno_croak (fh, 0);
1439 dREQ;
1440
1441 if (expect_false (close_fd < 0))
1442 {
1443 int pipefd [2];
1444
1445 if (
1446#ifdef _WIN32
1447 _pipe (pipefd, 1, _O_BINARY) < 0
1448#else
1449 pipe (pipefd) < 0
1450 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1451#endif
1452 || close (pipefd [1]) < 0
1453 )
1454 abort (); /*D*/
1455
1456 close_fd = pipefd [0];
1457 }
1458
1459 req->type = EIO_DUP2;
1460 req->int1 = close_fd;
1461 req->sv2 = newSVsv (fh);
1462 req->int2 = fd;
1463
1464 REQ_SEND;
1465}
1466
1467void
1468aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1469 PPCODE:
1470{
1471 int fd = s_fileno_croak (fh, 0);
1472 dREQ;
1473
1474 req->type = EIO_SEEK;
1475 req->sv1 = newSVsv (fh);
1476 req->int1 = fd;
1477 req->offs = SvVAL64 (offset);
1478 req->int2 = whence;
1479
1480 REQ_SEND;
1481}
1482
1483void
705aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1484aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
706 SV * fh
707 UV offset
708 UV length
709 SV * data
710 UV dataoffset
711 SV * callback
712 ALIAS: 1485 ALIAS:
713 aio_read = REQ_READ 1486 aio_read = EIO_READ
714 aio_write = REQ_WRITE 1487 aio_write = EIO_WRITE
715 PROTOTYPE: $$$$$;$
716 CODE: 1488 PPCODE:
717{ 1489{
718 aio_req req;
719 STRLEN svlen; 1490 STRLEN svlen;
1491 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
720 char *svptr = SvPVbyte (data, svlen); 1492 char *svptr = SvPVbyte (data, svlen);
721 1493 UV len = SvUV (length);
722 SvUPGRADE (data, SVt_PV);
723 SvPOK_on (data);
724 1494
725 if (dataoffset < 0) 1495 if (dataoffset < 0)
726 dataoffset += svlen; 1496 dataoffset += svlen;
727 1497
728 if (dataoffset < 0 || dataoffset > svlen) 1498 if (dataoffset < 0 || dataoffset > svlen)
729 croak ("data offset outside of string"); 1499 croak ("dataoffset outside of data scalar");
730 1500
731 if (ix == REQ_WRITE) 1501 if (ix == EIO_WRITE)
732 { 1502 {
733 /* write: check length and adjust. */ 1503 /* write: check length and adjust. */
734 if (length < 0 || length + dataoffset > svlen) 1504 if (!SvOK (length) || len + dataoffset > svlen)
735 length = svlen - dataoffset; 1505 len = svlen - dataoffset;
736 } 1506 }
737 else 1507 else
738 { 1508 {
739 /* read: grow scalar as necessary */ 1509 /* read: check type and grow scalar as necessary */
1510 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
740 svptr = SvGROW (data, length + dataoffset); 1511 svptr = sv_grow (data, len + dataoffset + 1);
1512 else if (SvCUR (data) < len + dataoffset)
1513 croak ("length + dataoffset outside of scalar, and cannot grow");
741 } 1514 }
742
743 if (length < 0)
744 croak ("length must not be negative");
745 1515
746 { 1516 {
747 dREQ; 1517 dREQ;
748 1518
749 req->type = ix; 1519 req->type = ix;
750 req->fh = newSVsv (fh); 1520 req->sv1 = newSVsv (fh);
751 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1521 req->int1 = fd;
752 : IoOFP (sv_2io (fh))); 1522 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
753 req->offset = offset; 1523 req->size = len;
754 req->length = length;
755 req->data = SvREFCNT_inc (data); 1524 req->sv2 = SvREFCNT_inc (data);
756 req->dataptr = (char *)svptr + dataoffset; 1525 req->ptr2 = (char *)svptr + dataoffset;
1526 req->stroffset = dataoffset;
757 1527
758 if (!SvREADONLY (data)) 1528 if (!SvREADONLY (data))
759 { 1529 {
760 SvREADONLY_on (data); 1530 SvREADONLY_on (data);
761 req->data2ptr = (void *)data; 1531 req->flags |= FLAG_SV2_RO_OFF;
762 } 1532 }
763 1533
764 send_req (req); 1534 REQ_SEND;
765 } 1535 }
766} 1536}
767 1537
768void 1538void
769aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1539aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
770 SV * out_fh
771 SV * in_fh
772 UV in_offset
773 UV length
774 SV * callback
775 PROTOTYPE: $$$$;$
776 CODE:
777{
778 dREQ;
779
780 req->type = REQ_SENDFILE;
781 req->fh = newSVsv (out_fh);
782 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
783 req->fh2 = newSVsv (in_fh);
784 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785 req->offset = in_offset;
786 req->length = length;
787
788 send_req (req);
789}
790
791void
792aio_readahead(fh,offset,length,callback=&PL_sv_undef)
793 SV * fh
794 UV offset
795 IV length
796 SV * callback
797 PROTOTYPE: $$$;$
798 CODE:
799{
800 dREQ;
801
802 req->type = REQ_READAHEAD;
803 req->fh = newSVsv (fh);
804 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
805 req->offset = offset;
806 req->length = length;
807
808 send_req (req);
809}
810
811void
812aio_stat(fh_or_path,callback=&PL_sv_undef)
813 SV * fh_or_path
814 SV * callback
815 ALIAS: 1540 ALIAS:
816 aio_stat = REQ_STAT 1541 aio_ioctl = EIO_IOCTL
817 aio_lstat = REQ_LSTAT 1542 aio_fcntl = EIO_FCNTL
818 CODE: 1543 PPCODE:
819{ 1544{
820 dREQ; 1545 int fd = s_fileno_croak (fh, 0);
1546 char *svptr;
821 1547
822 New (0, req->statdata, 1, Stat_t); 1548 if (SvPOK (arg) || !SvNIOK (arg))
823 if (!req->statdata)
824 { 1549 {
825 free_req (req); 1550 STRLEN svlen;
826 croak ("out of memory during aio_req->statdata allocation"); 1551 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
827 } 1552#ifdef IOCPARM_LEN
1553 STRLEN need = IOCPARM_LEN (request);
1554#else
1555 STRLEN need = 256;
1556#endif
828 1557
829 if (SvPOK (fh_or_path)) 1558 if (svlen < need)
830 { 1559 svptr = SvGROW (arg, need);
831 req->type = ix;
832 req->data = newSVsv (fh_or_path);
833 req->dataptr = SvPVbyte_nolen (req->data);
834 } 1560 }
835 else 1561 else
1562 svptr = (char *)SvIV (arg);
1563
836 { 1564 {
1565 dREQ;
1566
837 req->type = REQ_FSTAT; 1567 req->type = ix;
838 req->fh = newSVsv (fh_or_path); 1568 req->sv1 = newSVsv (fh);
839 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1569 req->int1 = fd;
1570 req->int2 = (long)request;
1571 req->sv2 = SvREFCNT_inc (arg);
1572 req->ptr2 = svptr;
1573
1574 REQ_SEND;
840 } 1575 }
841
842 send_req (req);
843} 1576}
844 1577
845void 1578void
846aio_unlink(pathname,callback=&PL_sv_undef) 1579aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
847 SV * pathname
848 SV * callback
849 ALIAS: 1580 ALIAS:
850 aio_unlink = REQ_UNLINK 1581 aio_readlink = EIO_READLINK
851 aio_rmdir = REQ_RMDIR 1582 aio_realpath = EIO_REALPATH
1583 PPCODE:
1584{
1585 dREQ;
1586
1587 req->type = ix;
1588 req_set_path1 (req, pathname);
1589
1590 REQ_SEND;
1591}
1592
1593void
1594aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1595 PPCODE:
1596{
1597 int ifd = s_fileno_croak (in_fh , 0);
1598 int ofd = s_fileno_croak (out_fh, 1);
1599 dREQ;
1600
1601 req->type = EIO_SENDFILE;
1602 req->sv1 = newSVsv (out_fh);
1603 req->int1 = ofd;
1604 req->sv2 = newSVsv (in_fh);
1605 req->int2 = ifd;
1606 req->offs = in_offset;
1607 req->size = length;
1608
1609 REQ_SEND;
1610}
1611
1612void
1613aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1614 PPCODE:
1615{
1616 int fd = s_fileno_croak (fh, 0);
1617 dREQ;
1618
1619 req->type = EIO_READAHEAD;
1620 req->sv1 = newSVsv (fh);
1621 req->int1 = fd;
1622 req->offs = offset;
1623 req->size = length;
1624
1625 REQ_SEND;
1626}
1627
1628void
1629aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1630 ALIAS:
1631 aio_stat = EIO_STAT
1632 aio_lstat = EIO_LSTAT
1633 aio_statvfs = EIO_STATVFS
1634 PPCODE:
1635{
1636 dREQ;
1637
1638 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1639
1640 REQ_SEND;
1641}
1642
1643void
1644st_xtime ()
1645 ALIAS:
1646 st_atime = 1
1647 st_mtime = 2
1648 st_ctime = 4
1649 st_xtime = 7
1650 PPCODE:
1651 EXTEND (SP, 3);
1652 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1653 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1654 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1655
1656void
1657st_xtimensec ()
1658 ALIAS:
1659 st_atimensec = 1
1660 st_mtimensec = 2
1661 st_ctimensec = 4
1662 st_xtimensec = 7
1663 PPCODE:
1664 EXTEND (SP, 3);
1665 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1666 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1667 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1668
1669UV
1670major (UV dev)
1671 ALIAS:
1672 minor = 1
852 CODE: 1673 CODE:
1674 RETVAL = ix ? minor (dev) : major (dev);
1675 OUTPUT:
1676 RETVAL
1677
1678UV
1679makedev (UV maj, UV min)
1680 CODE:
1681 RETVAL = makedev (maj, min);
1682 OUTPUT:
1683 RETVAL
1684
1685void
1686aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1687 PPCODE:
1688{
1689 dREQ;
1690
1691 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1692 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1693 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1694
1695 REQ_SEND;
1696}
1697
1698void
1699aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1700 PPCODE:
1701{
1702 dREQ;
1703
1704 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1705 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1706
1707 REQ_SEND;
1708}
1709
1710void
1711aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1712 PPCODE:
1713{
1714 dREQ;
1715
1716 req->int2 = mode;
1717 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1718
1719 REQ_SEND;
1720}
1721
1722void
1723aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1724 PPCODE:
1725{
1726 dREQ;
1727
1728 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1729 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1730 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1731
1732 REQ_SEND;
1733}
1734
1735void
1736aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1737 PPCODE:
1738{
1739 dREQ;
1740
1741 req->type = EIO_READDIR;
1742 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1743
1744 if (flags & EIO_READDIR_DENTS)
1745 req->int1 |= EIO_READDIR_CUSTOM2;
1746
1747 req_set_path1 (req, pathname);
1748
1749 REQ_SEND;
1750}
1751
1752void
1753aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1754 PPCODE:
1755{
1756 dREQ;
1757
1758 req->type = EIO_MKDIR;
1759 req->int2 = mode;
1760 req_set_path1 (req, pathname);
1761
1762 REQ_SEND;
1763}
1764
1765void
1766aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1767 ALIAS:
1768 aio_unlink = EIO_UNLINK
1769 aio_rmdir = EIO_RMDIR
1770 aio_readdir = EIO_READDIR
1771 PPCODE:
853{ 1772{
854 dREQ; 1773 dREQ;
855 1774
856 req->type = ix; 1775 req->type = ix;
857 req->data = newSVsv (pathname); 1776 req_set_path1 (req, pathname);
858 req->dataptr = SvPVbyte_nolen (req->data);
859
860 send_req (req);
861}
862 1777
1778 REQ_SEND;
1779}
1780
863void 1781void
864aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1782aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
865 SV * oldpath 1783 ALIAS:
866 SV * newpath 1784 aio_link = EIO_LINK
867 SV * callback 1785 aio_symlink = EIO_SYMLINK
1786 aio_rename = EIO_RENAME
868 CODE: 1787 PPCODE:
869{ 1788{
1789 eio_wd wd2 = 0;
870 dREQ; 1790 dREQ;
871 1791
872 req->type = REQ_SYMLINK; 1792 req->type = ix;
873 req->fh = newSVsv (oldpath); 1793 req_set_path1 (req, oldpath);
874 req->data2ptr = SvPVbyte_nolen (req->fh); 1794 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
875 req->data = newSVsv (newpath); 1795 req->int3 = (long)wd2;
876 req->dataptr = SvPVbyte_nolen (req->data);
877 1796
878 send_req (req); 1797 REQ_SEND;
879} 1798}
880 1799
881void 1800void
882flush() 1801aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
883 PROTOTYPE: 1802 PPCODE:
1803{
1804 eio_wd wd2 = 0;
1805 dREQ;
1806
1807 req->type = EIO_RENAME;
1808 req_set_path1 (req, oldpath);
1809 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1810 req->int2 = flags;
1811 req->int3 = (long)wd2;
1812
1813 REQ_SEND;
1814}
1815
1816void
1817aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1818 PPCODE:
1819{
1820 dREQ;
1821
1822 req->type = EIO_MKNOD;
1823 req->int2 = (mode_t)mode;
1824 req->offs = dev;
1825 req_set_path1 (req, pathname);
1826
1827 REQ_SEND;
1828}
1829
1830void
1831aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1832 ALIAS:
1833 aio_mtouch = EIO_MTOUCH
1834 aio_msync = EIO_MSYNC
1835 PPCODE:
1836{
1837 STRLEN svlen;
1838 char *svptr = SvPVbyte (data, svlen);
1839 UV len = SvUV (length);
1840
1841 if (flags < 0)
1842 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1843
1844 if (offset < 0)
1845 offset += svlen;
1846
1847 if (offset < 0 || offset > svlen)
1848 croak ("offset outside of scalar");
1849
1850 if (!SvOK (length) || len + offset > svlen)
1851 len = svlen - offset;
1852
1853 {
1854 dREQ;
1855
1856 req->type = ix;
1857 req->sv2 = SvREFCNT_inc (data);
1858 req->ptr2 = (char *)svptr + offset;
1859 req->size = len;
1860 req->int1 = flags;
1861
1862 REQ_SEND;
1863 }
1864}
1865
1866void
1867aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1868 PPCODE:
1869{
1870 STRLEN svlen;
1871 char *svptr = SvPVbyte (data, svlen);
1872 UV len = SvUV (length);
1873
1874 if (offset < 0)
1875 offset += svlen;
1876
1877 if (offset < 0 || offset > svlen)
1878 croak ("offset outside of scalar");
1879
1880 if (!SvOK (length) || len + offset > svlen)
1881 len = svlen - offset;
1882
1883 {
1884 dREQ;
1885
1886 req->type = EIO_MLOCK;
1887 req->sv2 = SvREFCNT_inc (data);
1888 req->ptr2 = (char *)svptr + offset;
1889 req->size = len;
1890
1891 REQ_SEND;
1892 }
1893}
1894
1895void
1896aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1897 PPCODE:
1898{
1899 dREQ;
1900
1901 req->type = EIO_MLOCKALL;
1902 req->int1 = flags;
1903
1904 REQ_SEND;
1905}
1906
1907void
1908aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1909 PPCODE:
1910{
1911 int fd = s_fileno_croak (fh, 0);
1912 dREQ;
1913
1914 req->type = EIO_CUSTOM;
1915 req->sv1 = newSVsv (fh);
1916 req->int1 = fd;
1917
1918 req->feed = fiemap;
1919#if HAVE_FIEMAP
1920 /* keep our fingers crossed that the next two types are 64 bit */
1921 req->offs = start;
1922 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1923 req->int2 = flags;
1924 req->int3 = SvOK (count) ? SvIV (count) : -1;
1925#endif
1926
1927 REQ_SEND;
1928}
1929
1930void
1931aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1932 PPCODE:
1933{
1934 char *svptr = 0;
1935
1936 sv_clear_foreign (data);
1937
1938 if (length) /* known length, directly read into scalar */
1939 {
1940 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1941 svptr = sv_grow (data, length + 1);
1942 else if (SvCUR (data) < length)
1943 croak ("length outside of scalar, and cannot grow");
1944 else
1945 svptr = SvPVbyte_nolen (data);
1946 }
1947
1948 {
1949 dREQ;
1950
1951 req->type = EIO_SLURP;
1952 req_set_path1 (req, pathname);
1953 req->offs = offset;
1954 req->size = length;
1955 req->sv2 = SvREFCNT_inc (data);
1956 req->ptr2 = svptr;
1957
1958 if (!SvREADONLY (data))
1959 {
1960 SvREADONLY_on (data);
1961 req->flags |= FLAG_SV2_RO_OFF;
1962 }
1963
1964 REQ_SEND;
1965 }
1966}
1967
1968void
1969aio_busy (double delay, SV *callback = &PL_sv_undef)
1970 PPCODE:
1971{
1972 dREQ;
1973
1974 req->type = EIO_BUSY;
1975 req->nv1 = delay < 0. ? 0. : delay;
1976
1977 REQ_SEND;
1978}
1979
1980void
1981aio_group (SV *callback = &PL_sv_undef)
1982 PPCODE:
1983{
1984 dREQ;
1985
1986 req->type = EIO_GROUP;
1987
1988 PUTBACK;
1989 req_submit (req);
1990 SPAGAIN;
1991
1992 XPUSHs (req_sv (req, aio_grp_stash));
1993}
1994
1995void
1996aio_nop (SV *callback = &PL_sv_undef)
1997 ALIAS:
1998 aio_nop = EIO_NOP
1999 aio_sync = EIO_SYNC
2000 PPCODE:
2001{
2002 dREQ;
2003
2004 req->type = ix;
2005
2006 REQ_SEND;
2007}
2008
2009int
2010aioreq_pri (int pri = NO_INIT)
884 CODE: 2011 CODE:
2012 RETVAL = next_pri;
2013 if (items > 0)
2014 {
2015 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2016 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2017 next_pri = pri;
2018 }
2019 OUTPUT:
2020 RETVAL
2021
2022void
2023aioreq_nice (int nice = 0)
2024 CODE:
2025 nice = next_pri - nice;
2026 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2027 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2028 next_pri = nice;
2029
2030void
2031flush ()
2032 CODE:
885 while (nreqs) 2033 while (eio_nreqs ())
886 { 2034 {
887 poll_wait (); 2035 poll_wait ();
888 poll_cb (); 2036 poll_cb ();
889 } 2037 }
890 2038
891void 2039int
892poll() 2040poll ()
893 PROTOTYPE:
894 CODE: 2041 CODE:
895 if (nreqs)
896 {
897 poll_wait (); 2042 poll_wait ();
898 poll_cb (); 2043 RETVAL = poll_cb ();
899 }
900
901int
902poll_fileno()
903 PROTOTYPE:
904 CODE:
905 RETVAL = respipe [0];
906 OUTPUT: 2044 OUTPUT:
907 RETVAL 2045 RETVAL
908 2046
909int 2047int
2048poll_fileno ()
2049 CODE:
2050 RETVAL = s_epipe_fd (&respipe);
2051 OUTPUT:
2052 RETVAL
2053
2054int
910poll_cb(...) 2055poll_cb (...)
911 PROTOTYPE: 2056 PROTOTYPE:
912 CODE: 2057 CODE:
913 RETVAL = poll_cb (); 2058 RETVAL = poll_cb ();
914 OUTPUT: 2059 OUTPUT:
915 RETVAL 2060 RETVAL
916 2061
917void 2062void
918poll_wait() 2063poll_wait ()
919 PROTOTYPE:
920 CODE: 2064 CODE:
921 if (nreqs)
922 poll_wait (); 2065 poll_wait ();
923 2066
924int 2067int
925nreqs() 2068nreqs ()
926 PROTOTYPE:
927 CODE: 2069 CODE:
928 RETVAL = nreqs; 2070 RETVAL = eio_nreqs ();
929 OUTPUT: 2071 OUTPUT:
930 RETVAL 2072 RETVAL
931 2073
2074int
2075nready ()
2076 CODE:
2077 RETVAL = eio_nready ();
2078 OUTPUT:
2079 RETVAL
2080
2081int
2082npending ()
2083 CODE:
2084 RETVAL = eio_npending ();
2085 OUTPUT:
2086 RETVAL
2087
2088int
2089nthreads ()
2090 CODE:
2091 RETVAL = eio_nthreads ();
2092 OUTPUT:
2093 RETVAL
2094
2095int
2096fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2097 CODE:
2098 RETVAL = posix_fadvise (fh, offset, length, advice);
2099 OUTPUT:
2100 RETVAL
2101
2102IV
2103sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2104 CODE:
2105 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2106 OUTPUT:
2107 RETVAL
2108
2109void
2110mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2111 PPCODE:
2112 sv_clear_foreign (scalar);
2113{
2114 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2115 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2116 if (addr == (void *)-1)
2117 XSRETURN_NO;
2118
2119 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2120
2121 if (!(prot & PROT_WRITE))
2122 SvREADONLY_on (scalar);
2123
2124 XSRETURN_YES;
2125}
2126
2127void
2128munmap (SV *scalar)
2129 CODE:
2130 sv_clear_foreign (scalar);
2131
2132SV *
2133mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2134 CODE:
2135{
2136 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2137 void *new;
2138
2139 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2140 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2141
2142 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2143
2144 RETVAL = &PL_sv_no;
2145
2146 if (new != (void *)-1)
2147 {
2148 RETVAL = new == (void *)mg->mg_ptr
2149 ? newSVpvn ("0 but true", 10)
2150 : &PL_sv_yes;
2151
2152 mg->mg_ptr = (char *)new;
2153 mg->mg_obj = (SV *)new_length;
2154
2155 SvPVX (scalar) = mg->mg_ptr;
2156 SvCUR_set (scalar, new_length);
2157 }
2158}
2159 OUTPUT:
2160 RETVAL
2161
2162int
2163madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2164 ALIAS:
2165 mprotect = 1
2166 CODE:
2167{
2168 STRLEN svlen;
2169 void *addr = SvPVbyte (scalar, svlen);
2170 STRLEN len = SvUV (length);
2171
2172 if (offset < 0)
2173 offset += svlen;
2174
2175 if (offset < 0 || offset > svlen)
2176 croak ("offset outside of scalar");
2177
2178 if (!SvOK (length) || len + offset > svlen)
2179 len = svlen - offset;
2180
2181 addr = (void *)(((intptr_t)addr) + offset);
2182 eio_page_align (&addr, &len);
2183
2184 switch (ix)
2185 {
2186 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2187 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2188 }
2189}
2190 OUTPUT:
2191 RETVAL
2192
2193int
2194munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2195 CODE:
2196{
2197 STRLEN svlen;
2198 void *addr = SvPVbyte (scalar, svlen);
2199 size_t len = SvUV (length);
2200
2201 if (offset < 0)
2202 offset += svlen;
2203
2204 if (offset < 0 || offset > svlen)
2205 croak ("offset outside of scalar");
2206
2207 if (!SvOK (length) || len + offset > svlen)
2208 len = svlen - offset;
2209
2210 addr = (void *)(((intptr_t)addr) + offset);
2211 eio_page_align (&addr, &len);
2212#if _POSIX_MEMLOCK_RANGE
2213 RETVAL = munlock (addr, len);
2214#else
2215 RETVAL = EIO_ENOSYS ();
2216#endif
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222munlockall ()
2223 CODE:
2224#if _POSIX_MEMLOCK
2225 munlockall ();
2226#else
2227 RETVAL = EIO_ENOSYS ();
2228#endif
2229 OUTPUT:
2230 RETVAL
2231
2232int
2233splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2234 CODE:
2235{
2236#if HAVE_LINUX_SPLICE
2237 loff_t off_in_, off_out_;
2238 RETVAL = splice (
2239 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2240 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2241 length, flags
2242 );
2243#else
2244 RETVAL = EIO_ENOSYS ();
2245#endif
2246}
2247 OUTPUT:
2248 RETVAL
2249
2250int
2251tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2252 CODE:
2253#if HAVE_LINUX_SPLICE
2254 RETVAL = tee (rfh, wfh, length, flags);
2255#else
2256 RETVAL = EIO_ENOSYS ();
2257#endif
2258 OUTPUT:
2259 RETVAL
2260
2261int
2262pipesize (aio_rfd rfh, int new_size = -1)
2263 PROTOTYPE: $;$
2264 CODE:
2265#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2266 if (new_size >= 0)
2267 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2268 else
2269 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2270#else
2271 errno = ENOSYS;
2272 RETVAL = -1;
2273#endif
2274 OUTPUT:
2275 RETVAL
2276
2277void
2278pipe2 (int flags = 0)
2279 PROTOTYPE: ;$
2280 PPCODE:
2281{
2282 int fd[2];
2283 int res;
2284
2285 if (flags)
2286#if HAVE_PIPE2
2287 res = pipe2 (fd, flags);
2288#else
2289 res = (errno = ENOSYS, -1);
2290#endif
2291 else
2292 res = pipe (fd);
2293
2294 if (!res)
2295 {
2296 EXTEND (SP, 2);
2297 PUSHs (newmortalFH (fd[0], O_RDONLY));
2298 PUSHs (newmortalFH (fd[1], O_WRONLY));
2299 }
2300}
2301
2302void
2303eventfd (unsigned int initval = 0, int flags = 0)
2304 PPCODE:
2305{
2306 int fd;
2307#if HAVE_EVENTFD
2308 fd = eventfd (initval, flags);
2309#else
2310 fd = (errno = ENOSYS, -1);
2311#endif
2312
2313 XPUSHs (newmortalFH (fd, O_RDWR));
2314}
2315
2316void
2317timerfd_create (int clockid, int flags = 0)
2318 PPCODE:
2319{
2320 int fd;
2321#if HAVE_TIMERFD
2322 fd = timerfd_create (clockid, flags);
2323#else
2324 fd = (errno = ENOSYS, -1);
2325#endif
2326
2327 XPUSHs (newmortalFH (fd, O_RDWR));
2328}
2329
2330void
2331timerfd_settime (SV *fh, int flags, NV interval, NV value)
2332 PPCODE:
2333{
2334 int fd = s_fileno_croak (fh, 0);
2335#if HAVE_TIMERFD
2336 int res;
2337 struct itimerspec its, ots;
2338
2339 ts_set (&its.it_interval, interval);
2340 ts_set (&its.it_value , value);
2341 res = timerfd_settime (fd, flags, &its, &ots);
2342
2343 if (!res)
2344 {
2345 EXTEND (SP, 2);
2346 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2347 PUSHs (newSVnv (ts_get (&ots.it_value)));
2348 }
2349#else
2350 errno = ENOSYS;
2351#endif
2352}
2353
2354void
2355timerfd_gettime (SV *fh)
2356 PPCODE:
2357{
2358 int fd = s_fileno_croak (fh, 0);
2359#if HAVE_TIMERFD
2360 int res;
2361 struct itimerspec ots;
2362 res = timerfd_gettime (fd, &ots);
2363
2364 if (!res)
2365 {
2366 EXTEND (SP, 2);
2367 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2368 PUSHs (newSVnv (ts_get (&ots.it_value)));
2369 }
2370#else
2371 errno = ENOSYS;
2372#endif
2373}
2374
2375UV
2376get_fdlimit ()
2377 CODE:
2378#if HAVE_RLIMITS
2379 struct rlimit rl;
2380 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2381 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2382#endif
2383 XSRETURN_UNDEF;
2384 OUTPUT:
2385 RETVAL
2386
2387void
2388min_fdlimit (UV limit = 0x7fffffffU)
2389 CODE:
2390{
2391#if HAVE_RLIMITS
2392 struct rlimit rl;
2393 rlim_t orig_rlim_max;
2394 UV bit;
2395
2396 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2397 goto fail;
2398
2399 if (rl.rlim_cur == RLIM_INFINITY)
2400 XSRETURN_YES;
2401
2402 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2403
2404 if (rl.rlim_cur < limit)
2405 {
2406 rl.rlim_cur = limit;
2407
2408 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2409 rl.rlim_max = rl.rlim_cur;
2410 }
2411
2412 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2413 XSRETURN_YES;
2414
2415 if (errno == EPERM)
2416 {
2417 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2418 /* our limit overflows a system-wide limit */
2419 /* try an adaptive algorithm, but do not lower the hardlimit */
2420 rl.rlim_max = 0;
2421 for (bit = 0x40000000U; bit; bit >>= 1)
2422 {
2423 rl.rlim_max |= bit;
2424 rl.rlim_cur = rl.rlim_max;
2425
2426 /* nevr decrease the hard limit */
2427 if (rl.rlim_max < orig_rlim_max)
2428 break;
2429
2430 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2431 rl.rlim_max &= ~bit; /* too high, remove bit again */
2432 }
2433
2434 /* now, raise the soft limit to the max permitted */
2435 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2436 {
2437 rl.rlim_cur = rl.rlim_max;
2438 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2439 errno = EPERM;
2440 }
2441 }
2442#endif
2443 fail:
2444 XSRETURN_UNDEF;
2445}
2446
2447void _on_next_submit (SV *cb)
2448 CODE:
2449 SvREFCNT_dec (on_next_submit);
2450 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2451
2452PROTOTYPES: DISABLE
2453
2454MODULE = IO::AIO PACKAGE = IO::AIO::WD
2455
2456BOOT:
2457{
2458 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2459 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2460}
2461
2462void
2463DESTROY (SV *self)
2464 CODE:
2465{
2466 aio_wd wd = SvAIO_WD (self);
2467#if HAVE_AT
2468 {
2469 SV *callback = &PL_sv_undef;
2470 dREQ; /* clobbers next_pri :/ */
2471 next_pri = req->pri; /* restore next_pri */
2472 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2473 req->type = EIO_WD_CLOSE;
2474 req->wd = wd;
2475 REQ_SEND;
2476 }
2477#else
2478 eio_wd_close_sync (wd);
2479#endif
2480}
2481
2482MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2483
2484void
2485cancel (aio_req_ornot req)
2486 CODE:
2487 eio_cancel (req);
2488
2489void
2490cb (aio_req_ornot req, SV *callback = NO_INIT)
2491 PPCODE:
2492{
2493 if (GIMME_V != G_VOID)
2494 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2495
2496 if (items > 1)
2497 {
2498 SV *cb_cv = get_cb (callback);
2499
2500 SvREFCNT_dec (req->callback);
2501 req->callback = SvREFCNT_inc (cb_cv);
2502 }
2503}
2504
2505MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2506
2507void
2508add (aio_req grp, ...)
2509 PPCODE:
2510{
2511 int i;
2512
2513 if (grp->int1 == 2)
2514 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2515
2516 for (i = 1; i < items; ++i )
2517 {
2518 aio_req req;
2519
2520 if (GIMME_V != G_VOID)
2521 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2522
2523 req = SvAIO_REQ (ST (i));
2524
2525 if (req)
2526 eio_grp_add (grp, req);
2527 }
2528}
2529
2530void
2531cancel_subs (aio_req_ornot req)
2532 CODE:
2533 req_cancel_subs (req);
2534
2535void
2536result (aio_req grp, ...)
2537 CODE:
2538{
2539 int i;
2540 AV *av;
2541
2542 grp->errorno = errno;
2543
2544 av = newAV ();
2545 av_extend (av, items - 1);
2546
2547 for (i = 1; i < items; ++i )
2548 av_push (av, newSVsv (ST (i)));
2549
2550 SvREFCNT_dec (grp->sv1);
2551 grp->sv1 = (SV *)av;
2552}
2553
2554void
2555errno (aio_req grp, int errorno = errno)
2556 CODE:
2557 grp->errorno = errorno;
2558
2559void
2560limit (aio_req grp, int limit)
2561 CODE:
2562 eio_grp_limit (grp, limit);
2563
2564void
2565feed (aio_req grp, SV *callback = &PL_sv_undef)
2566 CODE:
2567{
2568 SvREFCNT_dec (grp->sv2);
2569 grp->sv2 = newSVsv (callback);
2570 grp->feed = aio_grp_feed;
2571
2572 if (grp->int2 <= 0)
2573 grp->int2 = 2;
2574
2575 eio_grp_limit (grp, grp->int2);
2576}
2577

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