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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.258 by root, Wed Jul 18 00:57:55 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>
13#include <sys/stat.h> 17#include <sys/stat.h>
14
15#include <unistd.h> 18#include <limits.h>
16#include <fcntl.h> 19#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 20#include <sched.h>
19 21
20#if HAVE_SENDFILE 22#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# if __linux
22# include <sys/sendfile.h>
23# elif __freebsd
24# include <sys/socket.h>
25# include <sys/uio.h> 23# include <sys/mman.h>
26# elif __hpux 24#endif
27# include <sys/socket.h> 25
26/* the incompetent fool that created musl keeps __linux__, refuses
27 * to implement any linux standard apis, and also has no way to test
28 * for his broken iplementation. don't complain to me if this fails
29 * for you.
30 */
31#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
32# include <linux/fs.h>
33# ifdef FS_IOC_FIEMAP
34# include <linux/types.h>
35# include <linux/fiemap.h>
36# define HAVE_FIEMAP 1
28# endif 37# endif
29#endif 38#endif
30 39
31#if __ia64 40/* perl namespace pollution */
32# define STACKSIZE 65536 41#undef VERSION
42
43/* perl stupidly overrides readdir and maybe others */
44/* with thread-unsafe versions, imagine that :( */
45#undef readdir
46#undef opendir
47#undef closedir
48
49#ifdef _WIN32
50
51 // perl overrides all those nice libc functions
52
53 #undef malloc
54 #undef free
55 #undef open
56 #undef read
57 #undef write
58 #undef send
59 #undef recv
60 #undef stat
61 #undef lstat
62 #undef fstat
63 #undef truncate
64 #undef ftruncate
65 #undef open
66 #undef link
67 #undef close
68 #undef unlink
69 #undef mkdir
70 #undef rmdir
71 #undef rename
72 #undef lseek
73 #undef opendir
74 #undef readdir
75 #undef closedir
76 #undef chmod
77 #undef fchmod
78 #undef dup
79 #undef dup2
80 #undef abort
81 #undef pipe
82
83 #define EIO_STRUCT_STAT struct _stati64
84 #define EIO_STRUCT_STATI64
85
33#else 86#else
34# define STACKSIZE 4096 87
88 #include <sys/time.h>
89 #include <sys/select.h>
90 #include <unistd.h>
91 #include <utime.h>
92 #include <signal.h>
93
94 #define EIO_STRUCT_STAT Stat_t
95
96#endif
97
98/*****************************************************************************/
99
100#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value))
102#else
103# define expect(expr,value) (expr)
104#endif
105
106#define expect_false(expr) expect ((expr) != 0, 0)
107#define expect_true(expr) expect ((expr) != 0, 1)
108
109/*****************************************************************************/
110
111#include "libeio/config.h"
112
113#include "schmorp.h"
114
115#if HAVE_EVENTFD
116# include <sys/eventfd.h>
117#endif
118
119#if HAVE_TIMERFD
120# include <sys/timerfd.h>
121#endif
122
123#if HAVE_RLIMITS
124 #include <sys/time.h>
125 #include <sys/resource.h>
126#endif
127
128typedef SV SV8; /* byte-sv, used for argument-checking */
129typedef int aio_rfd; /* read file desriptor */
130typedef int aio_wfd; /* write file descriptor */
131
132static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
133
134#define EIO_REQ_MEMBERS \
135 SV *callback; \
136 SV *sv1, *sv2; \
137 SV *sv3, *sv4; \
138 STRLEN stroffset; \
139 SV *self;
140
141#define EIO_NO_WRAPPERS 1
142
143#include "libeio/eio.h"
144
145static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp);
148#define EIO_DESTROY(req) req_destroy (req)
149
150#include "libeio/eio.c"
151
152#if !HAVE_POSIX_FADVISE
153# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
154#endif
155
156#if !HAVE_POSIX_MADVISE
157# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
158#endif
159
160#ifndef MAP_ANONYMOUS
161# ifdef MAP_ANON
162# define MAP_ANONYMOUS MAP_ANON
163# else
164# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
35#endif 165# endif
166#endif
36 167
37enum { 168/* defines all sorts of constants to 0 unless they are already defined */
38 REQ_QUIT, 169/* also provides const_iv_ and const_niv_ macros for them */
39 REQ_OPEN, REQ_CLOSE, 170#include "def0.h"
40 REQ_READ, REQ_WRITE, REQ_READAHEAD, 171
41 REQ_SENDFILE, 172#ifndef makedev
42 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 173# define makedev(maj,min) (((maj) << 8) | (min))
43 REQ_FSYNC, REQ_FDATASYNC, 174#endif
44 REQ_UNLINK, REQ_RMDIR, 175#ifndef major
45 REQ_SYMLINK, 176# define major(dev) ((dev) >> 8)
177#endif
178#ifndef minor
179# define minor(dev) ((dev) & 0xff)
180#endif
181
182#if PAGESIZE <= 0
183# define PAGESIZE sysconf (_SC_PAGESIZE)
184#endif
185
186/*****************************************************************************/
187
188#if !_POSIX_MAPPED_FILES
189# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
190# define munmap(addr,length) EIO_ENOSYS ()
191#endif
192
193#if !_POSIX_MEMORY_PROTECTION
194# define mprotect(addr,len,prot) EIO_ENOSYS ()
195#endif
196
197#if !MREMAP_MAYMOVE
198# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
199#endif
200
201#define FOREIGN_MAGIC PERL_MAGIC_ext
202
203static int ecb_cold
204mmap_free (pTHX_ SV *sv, MAGIC *mg)
205{
206 int old_errno = errno;
207 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
208 errno = old_errno;
209
210 mg->mg_obj = 0; /* just in case */
211
212 SvREADONLY_off (sv);
213
214 if (SvPVX (sv) != mg->mg_ptr)
215 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
216
217 SvCUR_set (sv, 0);
218 SvPVX (sv) = 0;
219 SvOK_off (sv);
220
221 return 0;
222}
223
224static MGVTBL mmap_vtbl = {
225 0, 0, 0, 0, mmap_free
46}; 226};
47 227
48typedef struct aio_cb { 228static int ecb_cold
49 struct aio_cb *volatile next; 229sysfree_free (pTHX_ SV *sv, MAGIC *mg)
50
51 int type;
52
53 int fd, fd2;
54 off_t offset;
55 size_t length;
56 ssize_t result;
57 mode_t mode; /* open */
58 int errorno;
59 SV *data, *callback;
60 SV *fh, *fh2;
61 void *dataptr, *data2ptr;
62 STRLEN dataoffset;
63
64 Stat_t *statdata;
65} aio_cb;
66
67typedef aio_cb *aio_req;
68
69static int started, wanted;
70static volatile int nreqs;
71static int max_outstanding = 1<<30;
72static int respipe [2];
73
74static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
75static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
76static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77
78static volatile aio_req reqs, reqe; /* queue start, queue end */
79static volatile aio_req ress, rese; /* queue start, queue end */
80
81static void free_req (aio_req req)
82{ 230{
83 if (req->data) 231 free (mg->mg_ptr);
84 SvREFCNT_dec (req->data); 232 mg->mg_obj = 0; /* just in case */
85 233
86 if (req->fh) 234 SvREADONLY_off (sv);
87 SvREFCNT_dec (req->fh);
88 235
89 if (req->fh2) 236 if (SvPVX (sv) != mg->mg_ptr)
90 SvREFCNT_dec (req->fh2); 237 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
91 238
92 if (req->statdata) 239 SvCUR_set (sv, 0);
93 Safefree (req->statdata); 240 SvPVX (sv) = 0;
241 SvOK_off (sv);
94 242
95 if (req->callback) 243 return 0;
96 SvREFCNT_dec (req->callback);
97
98 Safefree (req);
99} 244}
100 245
246static MGVTBL sysfree_vtbl = {
247 0, 0, 0, 0, sysfree_free
248};
249
250/*****************************************************************************/
251
252/* helper: set scalar to foreign ptr with custom free */
101static void 253static void
102poll_wait () 254sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
103{ 255{
104 if (nreqs && !ress) 256 sv_force_normal (sv);
105 {
106 fd_set rfd;
107 FD_ZERO(&rfd);
108 FD_SET(respipe [0], &rfd);
109 257
110 select (respipe [0] + 1, &rfd, 0, 0, 0); 258 /* we store the length in mg_obj, as namlen is I32 :/ */
111 } 259 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
112} 260 ->mg_obj = (SV *)length;
113 261
262 SvUPGRADE (sv, SVt_PV); /* nop... */
263
264 if (SvLEN (sv))
265 Safefree (SvPVX (sv));
266
267 SvPVX (sv) = (char *)addr;
268 SvCUR_set (sv, length);
269 SvLEN_set (sv, 0);
270 SvPOK_only (sv);
271}
272
114static int 273static void
115poll_cb () 274sv_clear_foreign (SV *sv)
116{ 275{
117 dSP; 276 /* todo: iterate over magic and only free ours, but of course */
277 /* the perl5porters will call that (correct) behaviour buggy */
278 sv_unmagic (sv, FOREIGN_MAGIC);
279}
280
281/*****************************************************************************/
282
283static void
284fiemap (eio_req *req)
285{
286 req->result = -1;
287
288#if HAVE_FIEMAP
289 /* assume some c99 */
290 struct fiemap *fiemap = 0;
291 size_t end_offset;
292 int count = req->int3;
293
294 req->flags |= EIO_FLAG_PTR1_FREE;
295
296 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
297 /* increase in 3.5kb steps */
298 if (count < 0)
118 int count = 0; 299 count = 8;
119 int do_croak = 0; 300
120 aio_req req; 301 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
302 errno = ENOMEM;
303 if (!fiemap)
304 return;
305
306 req->ptr1 = fiemap;
307
308 fiemap->fm_start = req->offs;
309 fiemap->fm_length = req->size;
310 fiemap->fm_flags = req->int2;
311 fiemap->fm_extent_count = count;
312
313 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
314 return;
315
316 if (req->int3 >= 0 /* not autosizing */
317 || !fiemap->fm_mapped_extents /* no more extents */
318 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
319 goto done;
320
321 /* else we have to loop -
322 * it would be tempting (actually I tried that first) to just query the
323 * number of extents needed, but linux often feels like not returning all
324 * extents, without telling us it left any out. this complicates
325 * this quite a bit.
326 */
327
328 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
121 329
122 for (;;) 330 for (;;)
123 { 331 {
124 pthread_mutex_lock (&reslock); 332 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
125 req = ress; 333 char scratch[3072];
334 struct fiemap *incmap = (struct fiemap *)scratch;
126 335
336 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
337 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
338 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
339 incmap->fm_flags = fiemap->fm_flags;
340 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
341
342 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
343 return;
344
345 if (!incmap->fm_mapped_extents)
346 goto done;
347
348 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
349 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
350 errno = ENOMEM;
127 if (req) 351 if (!fiemap)
352 return;
353
354 req->ptr1 = fiemap;
355
356 for (count = 0; count < incmap->fm_mapped_extents; ++count)
128 { 357 {
129 ress = req->next; 358 struct fiemap_extent *e = incmap->fm_extents + count;
130 359
131 if (!ress) 360 if (e->fe_logical + e->fe_length >= end_offset)
132 { 361 goto done;
133 /* read any signals sent by the worker threads */
134 char buf [32];
135 while (read (respipe [0], buf, 32) == 32)
136 ;
137 362
138 rese = 0; 363 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
139 } 364
365 if (e->fe_flags & FIEMAP_EXTENT_LAST)
366 goto done;
367
140 } 368 }
369 }
141 370
142 pthread_mutex_unlock (&reslock); 371done:
372 req->result = 0;
143 373
144 if (!req) 374#else
145 break; 375 errno = ENOSYS;
376#endif
377}
146 378
147 nreqs--; 379/*****************************************************************************/
148 380
149 if (req->type == REQ_QUIT) 381enum {
150 started--; 382 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
151 else 383};
384
385typedef eio_req *aio_req;
386typedef eio_req *aio_req_ornot;
387typedef eio_wd aio_wd;
388
389static SV *on_next_submit;
390static int next_pri = EIO_PRI_DEFAULT;
391static int max_outstanding;
392
393static s_epipe respipe;
394
395static void req_destroy (aio_req req);
396static void req_cancel (aio_req req);
397
398static void
399want_poll (void)
400{
401 /* write a dummy byte to the pipe so fh becomes ready */
402 s_epipe_signal (&respipe);
403}
404
405static void
406done_poll (void)
407{
408 /* read any signals sent by the worker threads */
409 s_epipe_drain (&respipe);
410}
411
412/* must be called at most once */
413static SV *
414req_sv (aio_req req, HV *stash)
415{
416 if (!req->self)
417 {
418 req->self = (SV *)newHV ();
419 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
420 }
421
422 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
423}
424
425static SV *
426newSVaio_wd (aio_wd wd)
427{
428 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
429}
430
431static aio_req
432SvAIO_REQ (SV *sv)
433{
434 MAGIC *mg;
435
436 if (!SvROK (sv)
437 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
438 || (SvSTASH (SvRV (sv)) != aio_grp_stash
439 && SvSTASH (SvRV (sv)) != aio_req_stash
440 && !sv_derived_from (sv, "IO::AIO::REQ")))
441 croak ("object of class IO::AIO::REQ expected");
442
443 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
444
445 return mg ? (aio_req)mg->mg_ptr : 0;
446}
447
448static aio_wd
449SvAIO_WD (SV *sv)
450{
451 if (!SvROK (sv)
452 || SvTYPE (SvRV (sv)) != SVt_PVMG
453 || SvSTASH (SvRV (sv)) != aio_wd_stash)
454 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
455
456 return (aio_wd)(long)SvIVX (SvRV (sv));
457}
458
459static SV *
460newmortalFH (int fd, int flags)
461{
462 if (fd < 0)
463 return &PL_sv_undef;
464
465 GV *gv = (GV *)sv_newmortal ();
466 char sym[64];
467 int symlen;
468
469 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
470 gv_init (gv, aio_stash, sym, symlen, 0);
471
472 symlen = snprintf (
473 sym,
474 sizeof (sym),
475 "%s&=%d",
476 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
477 fd
478 );
479
480 return do_open (gv, sym, symlen, 0, 0, 0, 0)
481 ? (SV *)gv : &PL_sv_undef;
482}
483
484static void
485aio_grp_feed (aio_req grp)
486{
487 if (grp->sv2 && SvOK (grp->sv2))
488 {
489 dSP;
490
491 ENTER;
492 SAVETMPS;
493 PUSHMARK (SP);
494 XPUSHs (req_sv (grp, aio_grp_stash));
495 PUTBACK;
496 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
497 SPAGAIN;
498 FREETMPS;
499 LEAVE;
500 }
501}
502
503static void
504req_submit (eio_req *req)
505{
506 eio_submit (req);
507
508 if (expect_false (on_next_submit))
509 {
510 dSP;
511 SV *cb = sv_2mortal (on_next_submit);
512
513 on_next_submit = 0;
514
515 PUSHMARK (SP);
516 PUTBACK;
517 call_sv (cb, G_DISCARD | G_EVAL);
518 }
519}
520
521static int
522req_invoke (eio_req *req)
523{
524 if (req->flags & FLAG_SV2_RO_OFF)
525 SvREADONLY_off (req->sv2);
526
527 if (!EIO_CANCELLED (req) && req->callback)
528 {
529 dSP;
530 static SV *sv_result_cache; /* caches the result integer SV */
531 SV *sv_result;
532
533 ENTER;
534 SAVETMPS;
535 PUSHMARK (SP);
536 EXTEND (SP, 1);
537
538 /* do not recreate the result IV from scratch each time */
539 if (expect_true (sv_result_cache))
152 { 540 {
153 int errorno = errno; 541 sv_result = sv_result_cache; sv_result_cache = 0;
154 errno = req->errorno; 542 SvIV_set (sv_result, req->result);
155 543 SvIOK_only (sv_result);
156 if (req->type == REQ_READ)
157 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158
159 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
160 SvREADONLY_off (req->data);
161
162 if (req->statdata)
163 {
164 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165 PL_laststatval = req->result;
166 PL_statcache = *(req->statdata);
167 }
168
169 ENTER;
170 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172
173 if (req->type == REQ_OPEN)
174 {
175 /* convert fd to fh */
176 SV *fh;
177
178 PUTBACK;
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180 SPAGAIN;
181
182 fh = SvREFCNT_inc (POPs);
183
184 PUSHMARK (SP);
185 XPUSHs (sv_2mortal (fh));
186 }
187
188 if (SvOK (req->callback))
189 {
190 PUTBACK;
191 call_sv (req->callback, G_VOID | G_EVAL);
192 SPAGAIN;
193
194 if (SvTRUE (ERRSV))
195 {
196 free_req (req);
197 croak (0);
198 }
199 }
200
201 LEAVE;
202
203 errno = errorno;
204 count++;
205 }
206
207 free_req (req);
208 }
209
210 return count;
211}
212
213static void *aio_proc(void *arg);
214
215static void
216start_thread (void)
217{
218 sigset_t fullsigset, oldsigset;
219 pthread_t tid;
220 pthread_attr_t attr;
221
222 pthread_attr_init (&attr);
223 pthread_attr_setstacksize (&attr, STACKSIZE);
224 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
225
226 sigfillset (&fullsigset);
227 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
228
229 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
230 started++;
231
232 sigprocmask (SIG_SETMASK, &oldsigset, 0);
233}
234
235static void
236send_req (aio_req req)
237{
238 while (started < wanted && nreqs >= started)
239 start_thread ();
240
241 nreqs++;
242
243 pthread_mutex_lock (&reqlock);
244
245 req->next = 0;
246
247 if (reqe)
248 {
249 reqe->next = req;
250 reqe = req;
251 }
252 else
253 reqe = reqs = req;
254
255 pthread_cond_signal (&reqwait);
256 pthread_mutex_unlock (&reqlock);
257
258 if (nreqs > max_outstanding)
259 for (;;)
260 {
261 poll_cb ();
262
263 if (nreqs <= max_outstanding)
264 break;
265
266 poll_wait ();
267 }
268}
269
270static void
271end_thread (void)
272{
273 aio_req req;
274 Newz (0, req, 1, aio_cb);
275 req->type = REQ_QUIT;
276
277 send_req (req);
278}
279
280static void min_parallel (int nthreads)
281{
282 if (wanted < nthreads)
283 wanted = nthreads;
284}
285
286static void max_parallel (int nthreads)
287{
288 int cur = started;
289
290 if (wanted > nthreads)
291 wanted = nthreads;
292
293 while (cur > wanted)
294 {
295 end_thread ();
296 cur--;
297 }
298
299 while (started > wanted)
300 {
301 poll_wait ();
302 poll_cb ();
303 }
304}
305
306static void create_pipe ()
307{
308 if (pipe (respipe))
309 croak ("unable to initialize result pipe");
310
311 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312 croak ("cannot set result pipe to nonblocking mode");
313
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode");
316}
317
318static void atfork_prepare (void)
319{
320 pthread_mutex_lock (&reqlock);
321 pthread_mutex_lock (&reslock);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 aio_req prv;
333
334 started = 0;
335
336 while (reqs)
337 {
338 prv = reqs;
339 reqs = prv->next;
340 free_req (prv);
341 }
342
343 reqs = reqe = 0;
344
345 while (ress)
346 {
347 prv = ress;
348 ress = prv->next;
349 free_req (prv);
350 }
351
352 ress = rese = 0;
353
354 close (respipe [0]);
355 close (respipe [1]);
356 create_pipe ();
357
358 atfork_parent ();
359}
360
361/*****************************************************************************/
362/* work around various missing functions */
363
364#if !HAVE_PREADWRITE
365# define pread aio_pread
366# define pwrite aio_pwrite
367
368/*
369 * make our pread/pwrite safe against themselves, but not against
370 * normal read/write by using a mutex. slows down execution a lot,
371 * but that's your problem, not mine.
372 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
374
375static ssize_t
376pread (int fd, void *buf, size_t count, off_t offset)
377{
378 ssize_t res;
379 off_t ooffset;
380
381 pthread_mutex_lock (&iolock);
382 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock);
387
388 return res;
389}
390
391static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset)
393{
394 ssize_t res;
395 off_t ooffset;
396
397 pthread_mutex_lock (&iolock);
398 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock);
403
404 return res;
405}
406#endif
407
408#if !HAVE_FDATASYNC
409# define fdatasync fsync
410#endif
411
412#if !HAVE_READAHEAD
413# define readahead aio_readahead
414
415static char readahead_buf[4096];
416
417static ssize_t
418readahead (int fd, off_t offset, size_t count)
419{
420 while (count > 0)
421 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423
424 pread (fd, readahead_buf, len, offset);
425 offset += len;
426 count -= len;
427 }
428
429 errno = 0;
430}
431#endif
432
433/* sendfile always needs emulation */
434static ssize_t
435sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436{
437 ssize_t res;
438
439 if (!count)
440 return 0;
441
442#if __linux
443 res = sendfile (ofd, ifd, &offset, count);
444
445#elif __freebsd
446 /*
447 * Of course, the freebsd sendfile is a dire hack with no thoughts
448 * wasted on making it similar to other i/o functions.
449 */
450 {
451 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453
454 if (!res && errno == EAGAIN)
455 /* maybe on others, too, as usual, the manpage leaves you guessing */
456 res = sbytes;
457 }
458
459#elif __hpux
460 res = sendfile (ofd, ifd, offset, count, 0, 0);
461
462#else
463 res = -1;
464 errno = ENOSYS;
465#endif
466
467 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))
468 {
469 /* emulate sendfile. this is a major pain in the ass */
470 char *buf = malloc (4096);
471 res = 0;
472
473 for (;;)
474 {
475 ssize_t cnt;
476
477 cnt = pread (ifd, buf, 4096, offset);
478
479 if (cnt <= 0)
480 {
481 if (cnt && !res) res = -1;
482 break;
483 }
484
485 cnt = write (ofd, buf, cnt);
486
487 if (cnt <= 0)
488 {
489 if (cnt && !res) res = -1;
490 break;
491 }
492
493 offset += cnt;
494 res += cnt;
495 }
496
497 {
498 int errorno = errno;
499 free (buf);
500 errno = errorno;
501 }
502 }
503
504 return res;
505}
506
507/*****************************************************************************/
508
509static void *
510aio_proc (void *thr_arg)
511{
512 aio_req req;
513 int type;
514
515 do
516 {
517 pthread_mutex_lock (&reqlock);
518
519 for (;;)
520 {
521 req = reqs;
522
523 if (reqs)
524 {
525 reqs = reqs->next;
526 if (!reqs) reqe = 0;
527 }
528
529 if (req)
530 break;
531
532 pthread_cond_wait (&reqwait, &reqlock);
533 }
534
535 pthread_mutex_unlock (&reqlock);
536
537 errno = 0; /* strictly unnecessary */
538
539 type = req->type;
540
541 switch (type)
542 {
543 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
544 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
545
546 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
547 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
548
549 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552
553 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
554 case REQ_CLOSE: req->result = close (req->fd); break;
555 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
557 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558
559 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560 case REQ_FSYNC: req->result = fsync (req->fd); break;
561
562 case REQ_QUIT:
563 break;
564
565 default:
566 req->result = ENOSYS;
567 break;
568 }
569
570 req->errorno = errno;
571
572 pthread_mutex_lock (&reslock);
573
574 req->next = 0;
575
576 if (rese)
577 {
578 rese->next = req;
579 rese = req;
580 } 544 }
581 else 545 else
582 { 546 {
583 rese = ress = req; 547 sv_result = newSViv (req->result);
584 548 SvREADONLY_on (sv_result);
585 /* write a dummy byte to the pipe so fh becomes ready */
586 write (respipe [1], &respipe, 1);
587 } 549 }
588 550
589 pthread_mutex_unlock (&reslock); 551 switch (req->type)
552 {
553 case EIO_WD_OPEN:
554 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
555 break;
556
557 case EIO_READDIR:
558 {
559 SV *rv = &PL_sv_undef;
560
561 if (req->result >= 0)
562 {
563 int i;
564 char *names = (char *)req->ptr2;
565 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
566 AV *av = newAV ();
567
568 av_extend (av, req->result - 1);
569
570 for (i = 0; i < req->result; ++i)
571 {
572 if (req->int1 & EIO_READDIR_DENTS)
573 {
574 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
575
576 if (req->int1 & EIO_READDIR_CUSTOM2)
577 {
578 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
579 AV *avent = newAV ();
580
581 av_extend (avent, 2);
582
583 if (!sv_type [ent->type])
584 {
585 sv_type [ent->type] = newSViv (ent->type);
586 SvREADONLY_on (sv_type [ent->type]);
587 }
588
589 av_store (avent, 0, namesv);
590 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
591 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
592
593 av_store (av, i, newRV_noinc ((SV *)avent));
594 }
595 else
596 av_store (av, i, namesv);
597
598 ++ent;
599 }
600 else
601 {
602 SV *name = newSVpv (names, 0);
603 av_store (av, i, name);
604 names += SvCUR (name) + 1;
605 }
606 }
607
608 rv = sv_2mortal (newRV_noinc ((SV *)av));
609 }
610
611 PUSHs (rv);
612
613 if (req->int1 & EIO_READDIR_CUSTOM1)
614 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
615 }
616 break;
617
618 case EIO_OPEN:
619 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
620 break;
621
622 case EIO_STATVFS:
623 case EIO_FSTATVFS:
624 {
625 SV *rv = &PL_sv_undef;
626
627#ifndef _WIN32
628 if (req->result >= 0)
629 {
630 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
631 HV *hv = newHV ();
632 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
633 * chooses to make it a struct.
634 */
635 unsigned long fsid = 0;
636 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
637
638 rv = sv_2mortal (newRV_noinc ((SV *)hv));
639
640 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
641 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
642 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
643 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
644 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
645 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
646 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
647 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
648 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
649 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
650 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
651 }
652#endif
653
654 PUSHs (rv);
655 }
656
657 break;
658
659 case EIO_GROUP:
660 req->int1 = 2; /* mark group as finished */
661
662 if (req->sv1)
663 {
664 int i;
665 AV *av = (AV *)req->sv1;
666
667 EXTEND (SP, AvFILL (av) + 1);
668 for (i = 0; i <= AvFILL (av); ++i)
669 PUSHs (*av_fetch (av, i, 0));
670 }
671 break;
672
673 case EIO_NOP:
674 case EIO_BUSY:
675 break;
676
677 case EIO_READLINK:
678 case EIO_REALPATH:
679 if (req->result > 0)
680 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
681 break;
682
683 case EIO_STAT:
684 case EIO_LSTAT:
685 case EIO_FSTAT:
686 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
687
688 if (!(PL_laststatval = req->result))
689 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
690 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
691
692 PUSHs (sv_result);
693 break;
694
695 case EIO_SEEK:
696 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
697 break;
698
699 case EIO_READ:
700 {
701 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
702 *SvEND (req->sv2) = 0;
703 SvPOK_only (req->sv2);
704 SvSETMAGIC (req->sv2);
705 PUSHs (sv_result);
706 }
707 break;
708
709 case EIO_SLURP:
710 {
711 if (req->result >= 0)
712 {
713 /* if length was originally not known, we steal the malloc'ed memory */
714 if (req->flags & EIO_FLAG_PTR2_FREE)
715 {
716 req->flags &= ~EIO_FLAG_PTR2_FREE;
717 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
718 }
719 else
720 {
721 SvCUR_set (req->sv2, req->result);
722 *SvEND (req->sv2) = 0;
723 SvPOK_only (req->sv2);
724 }
725
726 SvSETMAGIC (req->sv2);
727 }
728
729 PUSHs (sv_result);
730 }
731 break;
732
733 case EIO_CUSTOM:
734 if (req->feed == fiemap)
735 {
736#if HAVE_FIEMAP
737 if (!req->result)
738 {
739 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
740
741 if (fiemap->fm_extent_count)
742 {
743 AV *av = newAV ();
744 int i;
745
746 while (fiemap->fm_mapped_extents)
747 {
748 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
749 AV *ext_av = newAV ();
750
751 av_store (ext_av, 3, newSVuv (extent->fe_flags));
752 av_store (ext_av, 2, newSVval64 (extent->fe_length));
753 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
754 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
755
756 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
757 }
758
759 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
760 }
761 else
762 {
763 SvIV_set (sv_result, fiemap->fm_mapped_extents);
764 PUSHs (sv_result);
765 }
766 }
767#endif
768 }
769 else
770 PUSHs (sv_result);
771 break;
772
773 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
774 if (req->result > 0)
775 SvIV_set (sv_result, 0);
776 /* FALLTHROUGH */
777
778 default:
779 PUSHs (sv_result);
780 break;
781 }
782
783 errno = req->errorno;
784
785 PUTBACK;
786 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
787 SPAGAIN;
788
789 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
790 SvREFCNT_dec (sv_result);
791 else
792 sv_result_cache = sv_result;
793
794 FREETMPS;
795 LEAVE;
796
797 PUTBACK;
590 } 798 }
591 while (type != REQ_QUIT);
592 799
800 return !!SvTRUE (ERRSV);
801}
802
803static void
804req_destroy (aio_req req)
805{
806 if (req->self)
807 {
808 sv_unmagic (req->self, PERL_MAGIC_ext);
809 SvREFCNT_dec (req->self);
810 }
811
812 SvREFCNT_dec (req->sv1);
813 SvREFCNT_dec (req->sv2);
814 SvREFCNT_dec (req->sv3);
815 SvREFCNT_dec (req->sv4);
816 SvREFCNT_dec (req->callback);
817
818 free (req);
819}
820
821static void
822req_cancel_subs (aio_req grp)
823{
824 if (grp->type != EIO_GROUP)
825 return;
826
827 SvREFCNT_dec (grp->sv2);
828 grp->sv2 = 0;
829
830 eio_grp_cancel (grp);
831}
832
833static void ecb_cold
834create_respipe (void)
835{
836 if (s_epipe_renew (&respipe))
837 croak ("IO::AIO: unable to initialize result pipe");
838}
839
840static void
841poll_wait (void)
842{
843 while (eio_nreqs ())
844 {
845 int size;
846
847 X_LOCK (EIO_POOL->reslock);
848 size = EIO_POOL->res_queue.size;
849 X_UNLOCK (EIO_POOL->reslock);
850
851 if (size)
852 return;
853
854 etp_maybe_start_thread (EIO_POOL);
855
856 s_epipe_wait (&respipe);
857 }
858}
859
860static int
861poll_cb (void)
862{
863 for (;;)
864 {
865 int res = eio_poll ();
866
867 if (res > 0)
868 croak (0);
869
870 if (!max_outstanding || max_outstanding > eio_nreqs ())
871 return res;
872
873 poll_wait ();
874 }
875}
876
877static void ecb_cold
878reinit (void)
879{
880 create_respipe ();
881
882 if (eio_init (want_poll, done_poll) < 0)
883 croak ("IO::AIO: unable to initialise eio library");
884}
885
886/*****************************************************************************/
887
888static SV *
889get_cb (SV *cb_sv)
890{
891 SvGETMAGIC (cb_sv);
892 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
893}
894
895static aio_req ecb_noinline
896dreq (SV *callback)
897{
898 SV *cb_cv;
899 aio_req req;
900 int req_pri = next_pri;
901 next_pri = EIO_PRI_DEFAULT;
902
903 cb_cv = get_cb (callback);
904
905 req = calloc (sizeof (*req), 1);
906 if (!req)
907 croak ("out of memory during eio_req allocation");
908
909 req->callback = SvREFCNT_inc (cb_cv);
910 req->pri = req_pri;
911
593 return 0; 912 return req;
594} 913}
595 914
596#define dREQ \ 915#define dREQ \
597 aio_req req; \ 916 aio_req req = dreq (callback); \
917
918#define REQ_SEND \
919 PUTBACK; \
920 req_submit (req); \
921 SPAGAIN; \
598 \ 922 \
599 if (SvOK (callback) && !SvROK (callback)) \ 923 if (GIMME_V != G_VOID) \
600 croak ("clalback must be undef or of reference type"); \ 924 XPUSHs (req_sv (req, aio_req_stash));
601 \ 925
602 Newz (0, req, 1, aio_cb); \ 926ecb_inline void
603 if (!req) \ 927req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
604 croak ("out of memory during aio_req allocation"); \ 928{
605 \ 929 if (expect_false (SvROK (path)))
606 req->callback = newSVsv (callback); 930 {
607 931 SV *rv = SvRV (path);
932 SV *wdob;
933
934 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
935 {
936 path = AvARRAY (rv)[1];
937 wdob = AvARRAY (rv)[0];
938
939 if (SvOK (wdob))
940 {
941 *wd = SvAIO_WD (wdob);
942 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
943 }
944 else
945 *wd = EIO_INVALID_WD;
946 }
947 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
948 {
949 *wd = (aio_wd)(long)SvIVX (rv);
950 *wdsv = SvREFCNT_inc_NN (rv);
951 *ptr = ".";
952 return; /* path set to "." */
953 }
954 else
955 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
956 }
957
958 *pathsv = newSVsv (path);
959 *ptr = SvPVbyte_nolen (*pathsv);
960}
961
962static void ecb_noinline
963req_set_path1 (aio_req req, SV *path)
964{
965 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
966}
967
968static void ecb_noinline
969req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
970{
971 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
972
973 switch (SvTYPE (rv))
974 {
975 case SVt_PVIO:
976 case SVt_PVLV:
977 case SVt_PVGV:
978 req->type = type_fh;
979 req->sv1 = newSVsv (fh_or_path);
980 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
981 break;
982
983 default:
984 req->type = type_path;
985 req_set_path1 (req, fh_or_path);
986 break;
987 }
988}
989
990/*****************************************************************************/
991
992static void
993ts_set (struct timespec *ts, NV value)
994{
995 ts->tv_sec = value;
996 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
997}
998
999static NV
1000ts_get (const struct timespec *ts)
1001{
1002 return ts->tv_sec + ts->tv_nsec * 1e-9;
1003}
1004
1005/*****************************************************************************/
1006
1007XS(boot_IO__AIO) ecb_cold;
1008
608MODULE = IO::AIO PACKAGE = IO::AIO 1009MODULE = IO::AIO PACKAGE = IO::AIO
609 1010
610PROTOTYPES: ENABLE 1011PROTOTYPES: ENABLE
611 1012
612BOOT: 1013BOOT:
613{ 1014{
614 create_pipe (); 1015 static const struct {
615 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1016 const char *name;
616} 1017 IV iv;
1018 } *civ, const_iv[] = {
1019# define const_niv(name, value) { # name, (IV) value },
1020# define const_iv(name) { # name, (IV) name },
1021# define const_eio(name) { # name, (IV) EIO_ ## name },
617 1022
1023 /* you have to re-run ./gendef0 after adding/removing any constants here */
1024 /* the first block can be undef if missing */
1025 const_iv (ENOSYS)
1026 const_iv (EXDEV)
1027 const_iv (EBADR)
1028
1029 /* for lseek */
1030 const_iv (SEEK_DATA)
1031 const_iv (SEEK_HOLE)
1032
1033 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1034 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1035 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1036 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1037 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1038 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1039
1040 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1041 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1042 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1043 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1044 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1045
1046 /* the second block will be 0 when missing */
1047 const_iv (O_RDONLY)
1048 const_iv (O_WRONLY)
1049 const_iv (O_RDWR)
1050 const_iv (O_CREAT)
1051 const_iv (O_TRUNC)
1052 const_iv (O_EXCL)
1053 const_iv (O_APPEND)
1054
1055 const_iv (O_ASYNC)
1056 const_iv (O_DIRECT)
1057 const_iv (O_NOATIME)
1058
1059 const_iv (O_CLOEXEC)
1060 const_iv (O_NOCTTY)
1061 const_iv (O_NOFOLLOW)
1062 const_iv (O_NONBLOCK)
1063 const_iv (O_EXEC)
1064 const_iv (O_SEARCH)
1065 const_iv (O_DIRECTORY)
1066 const_iv (O_DSYNC)
1067 const_iv (O_RSYNC)
1068 const_iv (O_SYNC)
1069 const_iv (O_PATH)
1070 const_iv (O_TMPFILE)
1071 const_iv (O_TTY_INIT)
1072
1073 const_iv (S_IFIFO)
1074 const_iv (S_IFCHR)
1075 const_iv (S_IFBLK)
1076 const_iv (S_IFLNK)
1077 const_iv (S_IFREG)
1078 const_iv (S_IFDIR)
1079 const_iv (S_IFWHT)
1080 const_iv (S_IFSOCK)
1081 const_iv (S_IFMT)
1082
1083 const_iv (ST_RDONLY)
1084 const_iv (ST_NOSUID)
1085 const_iv (ST_NODEV)
1086 const_iv (ST_NOEXEC)
1087 const_iv (ST_SYNCHRONOUS)
1088 const_iv (ST_MANDLOCK)
1089 const_iv (ST_WRITE)
1090 const_iv (ST_APPEND)
1091 const_iv (ST_IMMUTABLE)
1092 const_iv (ST_NOATIME)
1093 const_iv (ST_NODIRATIME)
1094 const_iv (ST_RELATIME)
1095
1096 const_iv (PROT_NONE)
1097 const_iv (PROT_EXEC)
1098 const_iv (PROT_READ)
1099 const_iv (PROT_WRITE)
1100
1101 const_iv (MAP_PRIVATE)
1102 const_iv (MAP_SHARED)
1103 const_iv (MAP_FIXED)
1104 const_iv (MAP_ANONYMOUS)
1105
1106 /* linuxish */
1107 const_iv (MAP_LOCKED)
1108 const_iv (MAP_NORESERVE)
1109 const_iv (MAP_POPULATE)
1110 const_iv (MAP_NONBLOCK)
1111 const_iv (MAP_GROWSDOWN)
1112 const_iv (MAP_32BIT)
1113 const_iv (MAP_HUGETLB)
1114 const_iv (MAP_STACK)
1115
1116 const_iv (MREMAP_MAYMOVE)
1117 const_iv (MREMAP_FIXED)
1118
1119 const_iv (F_DUPFD_CLOEXEC)
1120
1121 const_iv (F_OFD_GETLK)
1122 const_iv (F_OFD_SETLK)
1123 const_iv (F_OFD_GETLKW)
1124
1125 const_iv (FIFREEZE)
1126 const_iv (FITHAW)
1127 const_iv (FITRIM)
1128 const_iv (FICLONE)
1129 const_iv (FICLONERANGE)
1130 const_iv (FIDEDUPERANGE)
1131
1132 const_iv (FS_IOC_GETFLAGS)
1133 const_iv (FS_IOC_SETFLAGS)
1134 const_iv (FS_IOC_GETVERSION)
1135 const_iv (FS_IOC_SETVERSION)
1136 const_iv (FS_IOC_FIEMAP)
1137 const_iv (FS_IOC_FSGETXATTR)
1138 const_iv (FS_IOC_FSSETXATTR)
1139 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1140 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1141 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1142
1143 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1144
1145 const_iv (FS_SECRM_FL)
1146 const_iv (FS_UNRM_FL)
1147 const_iv (FS_COMPR_FL)
1148 const_iv (FS_SYNC_FL)
1149 const_iv (FS_IMMUTABLE_FL)
1150 const_iv (FS_APPEND_FL)
1151 const_iv (FS_NODUMP_FL)
1152 const_iv (FS_NOATIME_FL)
1153 const_iv (FS_DIRTY_FL)
1154 const_iv (FS_COMPRBLK_FL)
1155 const_iv (FS_NOCOMP_FL)
1156 const_iv (FS_ENCRYPT_FL)
1157 const_iv (FS_BTREE_FL)
1158 const_iv (FS_INDEX_FL)
1159 const_iv (FS_JOURNAL_DATA_FL)
1160 const_iv (FS_NOTAIL_FL)
1161 const_iv (FS_DIRSYNC_FL)
1162 const_iv (FS_TOPDIR_FL)
1163 const_iv (FS_FL_USER_MODIFIABLE)
1164
1165 const_iv (FS_XFLAG_REALTIME)
1166 const_iv (FS_XFLAG_PREALLOC)
1167 const_iv (FS_XFLAG_IMMUTABLE)
1168 const_iv (FS_XFLAG_APPEND)
1169 const_iv (FS_XFLAG_SYNC)
1170 const_iv (FS_XFLAG_NOATIME)
1171 const_iv (FS_XFLAG_NODUMP)
1172 const_iv (FS_XFLAG_RTINHERIT)
1173 const_iv (FS_XFLAG_PROJINHERIT)
1174 const_iv (FS_XFLAG_NOSYMLINKS)
1175 const_iv (FS_XFLAG_EXTSIZE)
1176 const_iv (FS_XFLAG_EXTSZINHERIT)
1177 const_iv (FS_XFLAG_NODEFRAG)
1178 const_iv (FS_XFLAG_FILESTREAM)
1179 const_iv (FS_XFLAG_DAX)
1180 const_iv (FS_XFLAG_HASATTR)
1181
1182 const_iv (FIEMAP_FLAG_SYNC)
1183 const_iv (FIEMAP_FLAG_XATTR)
1184 const_iv (FIEMAP_FLAGS_COMPAT)
1185 const_iv (FIEMAP_EXTENT_LAST)
1186 const_iv (FIEMAP_EXTENT_UNKNOWN)
1187 const_iv (FIEMAP_EXTENT_DELALLOC)
1188 const_iv (FIEMAP_EXTENT_ENCODED)
1189 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1190 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1191 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1192 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1193 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1194 const_iv (FIEMAP_EXTENT_MERGED)
1195 const_iv (FIEMAP_EXTENT_SHARED)
1196
1197 const_iv (SPLICE_F_MOVE)
1198 const_iv (SPLICE_F_NONBLOCK)
1199 const_iv (SPLICE_F_MORE)
1200 const_iv (SPLICE_F_GIFT)
1201
1202 const_iv (EFD_CLOEXEC)
1203 const_iv (EFD_NONBLOCK)
1204 const_iv (EFD_SEMAPHORE)
1205
1206 const_iv (CLOCK_REALTIME)
1207 const_iv (CLOCK_MONOTONIC)
1208 const_iv (CLOCK_BOOTTIME)
1209 const_iv (CLOCK_REALTIME_ALARM)
1210 const_iv (CLOCK_BOOTTIME_ALARM)
1211
1212 const_iv (TFD_NONBLOCK)
1213 const_iv (TFD_CLOEXEC)
1214
1215 const_iv (TFD_TIMER_ABSTIME)
1216 const_iv (TFD_TIMER_CANCEL_ON_SET)
1217
1218 /* these are libeio constants, and are independent of gendef0 */
1219 const_eio (SEEK_SET)
1220 const_eio (SEEK_CUR)
1221 const_eio (SEEK_END)
1222
1223 const_eio (MCL_FUTURE)
1224 const_eio (MCL_CURRENT)
1225
1226 const_eio (MS_ASYNC)
1227 const_eio (MS_INVALIDATE)
1228 const_eio (MS_SYNC)
1229
1230 const_eio (MT_MODIFY)
1231
1232 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1233 const_eio (SYNC_FILE_RANGE_WRITE)
1234 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1235
1236 const_eio (FALLOC_FL_KEEP_SIZE)
1237 const_eio (FALLOC_FL_PUNCH_HOLE)
1238 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1239 const_eio (FALLOC_FL_ZERO_RANGE)
1240 const_eio (FALLOC_FL_INSERT_RANGE)
1241 const_eio (FALLOC_FL_UNSHARE_RANGE)
1242
1243 const_eio (RENAME_NOREPLACE)
1244 const_eio (RENAME_EXCHANGE)
1245 const_eio (RENAME_WHITEOUT)
1246
1247 const_eio (READDIR_DENTS)
1248 const_eio (READDIR_DIRS_FIRST)
1249 const_eio (READDIR_STAT_ORDER)
1250 const_eio (READDIR_FOUND_UNKNOWN)
1251
1252 const_eio (DT_UNKNOWN)
1253 const_eio (DT_FIFO)
1254 const_eio (DT_CHR)
1255 const_eio (DT_DIR)
1256 const_eio (DT_BLK)
1257 const_eio (DT_REG)
1258 const_eio (DT_LNK)
1259 const_eio (DT_SOCK)
1260 const_eio (DT_WHT)
1261 };
1262
1263 aio_stash = gv_stashpv ("IO::AIO" , 1);
1264 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1265 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1266 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1267
1268 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1269 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1270
1271 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1272
1273 reinit ();
1274}
1275
618void 1276void
619min_parallel(nthreads) 1277reinit ()
620 int nthreads 1278 PROTOTYPE:
1279
1280void
1281max_poll_reqs (unsigned int nreqs)
621 PROTOTYPE: $ 1282 PROTOTYPE: $
1283 CODE:
1284 eio_set_max_poll_reqs (nreqs);
622 1285
623void 1286void
624max_parallel(nthreads) 1287max_poll_time (double nseconds)
625 int nthreads
626 PROTOTYPE: $ 1288 PROTOTYPE: $
627
628int
629max_outstanding(nreqs)
630 int nreqs
631 PROTOTYPE: $
632 CODE: 1289 CODE:
633 RETVAL = max_outstanding; 1290 eio_set_max_poll_time (nseconds);
1291
1292void
1293min_parallel (unsigned int nthreads)
1294 PROTOTYPE: $
1295 CODE:
1296 eio_set_min_parallel (nthreads);
1297
1298void
1299max_parallel (unsigned int nthreads)
1300 PROTOTYPE: $
1301 CODE:
1302 eio_set_max_parallel (nthreads);
1303
1304void
1305max_idle (unsigned int nthreads)
1306 PROTOTYPE: $
1307 CODE:
1308 eio_set_max_idle (nthreads);
1309
1310void
1311idle_timeout (unsigned int seconds)
1312 PROTOTYPE: $
1313 CODE:
1314 eio_set_idle_timeout (seconds);
1315
1316void
1317max_outstanding (unsigned int maxreqs)
1318 PROTOTYPE: $
1319 CODE:
634 max_outstanding = nreqs; 1320 max_outstanding = maxreqs;
635 1321
636void 1322void
637aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1323aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
638 SV * pathname
639 int flags
640 int mode
641 SV * callback
642 PROTOTYPE: $$$;$
643 CODE: 1324 PPCODE:
644{ 1325{
645 dREQ; 1326 dREQ;
646 1327
1328 req->type = EIO_WD_OPEN;
1329 req_set_path1 (req, pathname);
1330
1331 REQ_SEND;
1332}
1333
1334void
1335aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1336 PPCODE:
1337{
1338 dREQ;
1339
647 req->type = REQ_OPEN; 1340 req->type = EIO_OPEN;
648 req->data = newSVsv (pathname); 1341 req_set_path1 (req, pathname);
649 req->dataptr = SvPVbyte_nolen (req->data);
650 req->fd = flags; 1342 req->int1 = flags;
651 req->mode = mode; 1343 req->int2 = mode;
652 1344
653 send_req (req); 1345 REQ_SEND;
654} 1346}
655 1347
656void 1348void
657aio_close(fh,callback=&PL_sv_undef) 1349aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
658 SV * fh
659 SV * callback
660 PROTOTYPE: $;$
661 ALIAS: 1350 ALIAS:
662 aio_close = REQ_CLOSE
663 aio_fsync = REQ_FSYNC 1351 aio_fsync = EIO_FSYNC
664 aio_fdatasync = REQ_FDATASYNC 1352 aio_fdatasync = EIO_FDATASYNC
1353 aio_syncfs = EIO_SYNCFS
665 CODE: 1354 PPCODE:
666{ 1355{
1356 int fd = s_fileno_croak (fh, 0);
667 dREQ; 1357 dREQ;
668 1358
669 req->type = ix; 1359 req->type = ix;
670 req->fh = newSVsv (fh); 1360 req->sv1 = newSVsv (fh);
671 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1361 req->int1 = fd;
672 1362
673 send_req (req); 1363 REQ_SEND;
674} 1364}
675 1365
676void 1366void
1367aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1368 PPCODE:
1369{
1370 int fd = s_fileno_croak (fh, 0);
1371 dREQ;
1372
1373 req->type = EIO_SYNC_FILE_RANGE;
1374 req->sv1 = newSVsv (fh);
1375 req->int1 = fd;
1376 req->offs = offset;
1377 req->size = nbytes;
1378 req->int2 = flags;
1379
1380 REQ_SEND;
1381}
1382
1383void
1384aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1385 PPCODE:
1386{
1387 int fd = s_fileno_croak (fh, 0);
1388 dREQ;
1389
1390 req->type = EIO_FALLOCATE;
1391 req->sv1 = newSVsv (fh);
1392 req->int1 = fd;
1393 req->int2 = mode;
1394 req->offs = offset;
1395 req->size = len;
1396
1397 REQ_SEND;
1398}
1399
1400void
1401aio_close (SV *fh, SV *callback = &PL_sv_undef)
1402 PPCODE:
1403{
1404 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1405 int fd = s_fileno_croak (fh, 0);
1406 dREQ;
1407
1408 if (expect_false (close_fd < 0))
1409 {
1410 int pipefd [2];
1411
1412 if (
1413#ifdef _WIN32
1414 _pipe (pipefd, 1, _O_BINARY) < 0
1415#else
1416 pipe (pipefd) < 0
1417 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1418#endif
1419 || close (pipefd [1]) < 0
1420 )
1421 abort (); /*D*/
1422
1423 close_fd = pipefd [0];
1424 }
1425
1426 req->type = EIO_DUP2;
1427 req->int1 = close_fd;
1428 req->sv2 = newSVsv (fh);
1429 req->int2 = fd;
1430
1431 REQ_SEND;
1432}
1433
1434void
1435aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1436 PPCODE:
1437{
1438 int fd = s_fileno_croak (fh, 0);
1439 dREQ;
1440
1441 req->type = EIO_SEEK;
1442 req->sv1 = newSVsv (fh);
1443 req->int1 = fd;
1444 req->offs = SvVAL64 (offset);
1445 req->int2 = whence;
1446
1447 REQ_SEND;
1448}
1449
1450void
677aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1451aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
678 SV * fh
679 UV offset
680 UV length
681 SV * data
682 UV dataoffset
683 SV * callback
684 ALIAS: 1452 ALIAS:
685 aio_read = REQ_READ 1453 aio_read = EIO_READ
686 aio_write = REQ_WRITE 1454 aio_write = EIO_WRITE
687 PROTOTYPE: $$$$$;$
688 CODE: 1455 PPCODE:
689{ 1456{
690 aio_req req;
691 STRLEN svlen; 1457 STRLEN svlen;
1458 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
692 char *svptr = SvPVbyte (data, svlen); 1459 char *svptr = SvPVbyte (data, svlen);
693 1460 UV len = SvUV (length);
694 SvUPGRADE (data, SVt_PV);
695 SvPOK_on (data);
696 1461
697 if (dataoffset < 0) 1462 if (dataoffset < 0)
698 dataoffset += svlen; 1463 dataoffset += svlen;
699 1464
700 if (dataoffset < 0 || dataoffset > svlen) 1465 if (dataoffset < 0 || dataoffset > svlen)
701 croak ("data offset outside of string"); 1466 croak ("dataoffset outside of data scalar");
702 1467
703 if (ix == REQ_WRITE) 1468 if (ix == EIO_WRITE)
704 { 1469 {
705 /* write: check length and adjust. */ 1470 /* write: check length and adjust. */
706 if (length < 0 || length + dataoffset > svlen) 1471 if (!SvOK (length) || len + dataoffset > svlen)
707 length = svlen - dataoffset; 1472 len = svlen - dataoffset;
708 } 1473 }
709 else 1474 else
710 { 1475 {
711 /* read: grow scalar as necessary */ 1476 /* read: check type and grow scalar as necessary */
1477 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
712 svptr = SvGROW (data, length + dataoffset); 1478 svptr = sv_grow (data, len + dataoffset + 1);
1479 else if (SvCUR (data) < len + dataoffset)
1480 croak ("length + dataoffset outside of scalar, and cannot grow");
713 } 1481 }
714
715 if (length < 0)
716 croak ("length must not be negative");
717 1482
718 { 1483 {
719 dREQ; 1484 dREQ;
720 1485
721 req->type = ix; 1486 req->type = ix;
722 req->fh = newSVsv (fh); 1487 req->sv1 = newSVsv (fh);
723 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1488 req->int1 = fd;
724 : IoOFP (sv_2io (fh))); 1489 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
725 req->offset = offset; 1490 req->size = len;
726 req->length = length;
727 req->data = SvREFCNT_inc (data); 1491 req->sv2 = SvREFCNT_inc (data);
728 req->dataptr = (char *)svptr + dataoffset; 1492 req->ptr2 = (char *)svptr + dataoffset;
1493 req->stroffset = dataoffset;
729 1494
730 if (!SvREADONLY (data)) 1495 if (!SvREADONLY (data))
731 { 1496 {
732 SvREADONLY_on (data); 1497 SvREADONLY_on (data);
733 req->data2ptr = (void *)data; 1498 req->flags |= FLAG_SV2_RO_OFF;
734 } 1499 }
735 1500
736 send_req (req); 1501 REQ_SEND;
737 } 1502 }
738} 1503}
739 1504
740void 1505void
741aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1506aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
742 SV * out_fh
743 SV * in_fh
744 UV in_offset
745 UV length
746 SV * callback
747 PROTOTYPE: $$$$;$
748 CODE:
749{
750 dREQ;
751
752 req->type = REQ_SENDFILE;
753 req->fh = newSVsv (out_fh);
754 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
755 req->fh2 = newSVsv (in_fh);
756 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757 req->offset = in_offset;
758 req->length = length;
759
760 send_req (req);
761}
762
763void
764aio_readahead(fh,offset,length,callback=&PL_sv_undef)
765 SV * fh
766 UV offset
767 IV length
768 SV * callback
769 PROTOTYPE: $$$;$
770 CODE:
771{
772 dREQ;
773
774 req->type = REQ_READAHEAD;
775 req->fh = newSVsv (fh);
776 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777 req->offset = offset;
778 req->length = length;
779
780 send_req (req);
781}
782
783void
784aio_stat(fh_or_path,callback=&PL_sv_undef)
785 SV * fh_or_path
786 SV * callback
787 ALIAS: 1507 ALIAS:
788 aio_stat = REQ_STAT 1508 aio_ioctl = EIO_IOCTL
789 aio_lstat = REQ_LSTAT 1509 aio_fcntl = EIO_FCNTL
790 CODE: 1510 PPCODE:
791{ 1511{
792 dREQ; 1512 int fd = s_fileno_croak (fh, 0);
1513 char *svptr;
793 1514
794 New (0, req->statdata, 1, Stat_t); 1515 if (SvPOK (arg) || !SvNIOK (arg))
795 if (!req->statdata)
796 { 1516 {
797 free_req (req); 1517 STRLEN svlen;
798 croak ("out of memory during aio_req->statdata allocation"); 1518 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
799 } 1519#ifdef IOCPARM_LEN
1520 STRLEN need = IOCPARM_LEN (request);
1521#else
1522 STRLEN need = 256;
1523#endif
800 1524
801 if (SvPOK (fh_or_path)) 1525 if (svlen < need)
802 { 1526 svptr = SvGROW (arg, need);
803 req->type = ix;
804 req->data = newSVsv (fh_or_path);
805 req->dataptr = SvPVbyte_nolen (req->data);
806 } 1527 }
807 else 1528 else
1529 svptr = (char *)SvIV (arg);
1530
808 { 1531 {
1532 dREQ;
1533
809 req->type = REQ_FSTAT; 1534 req->type = ix;
810 req->fh = newSVsv (fh_or_path); 1535 req->sv1 = newSVsv (fh);
811 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1536 req->int1 = fd;
1537 req->int2 = (long)request;
1538 req->sv2 = SvREFCNT_inc (arg);
1539 req->ptr2 = svptr;
1540
1541 REQ_SEND;
812 } 1542 }
813
814 send_req (req);
815} 1543}
816 1544
817void 1545void
818aio_unlink(pathname,callback=&PL_sv_undef) 1546aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
819 SV * pathname
820 SV * callback
821 ALIAS: 1547 ALIAS:
822 aio_unlink = REQ_UNLINK 1548 aio_readlink = EIO_READLINK
823 aio_rmdir = REQ_RMDIR 1549 aio_realpath = EIO_REALPATH
1550 PPCODE:
1551{
1552 dREQ;
1553
1554 req->type = ix;
1555 req_set_path1 (req, pathname);
1556
1557 REQ_SEND;
1558}
1559
1560void
1561aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1562 PPCODE:
1563{
1564 int ifd = s_fileno_croak (in_fh , 0);
1565 int ofd = s_fileno_croak (out_fh, 1);
1566 dREQ;
1567
1568 req->type = EIO_SENDFILE;
1569 req->sv1 = newSVsv (out_fh);
1570 req->int1 = ofd;
1571 req->sv2 = newSVsv (in_fh);
1572 req->int2 = ifd;
1573 req->offs = in_offset;
1574 req->size = length;
1575
1576 REQ_SEND;
1577}
1578
1579void
1580aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1581 PPCODE:
1582{
1583 int fd = s_fileno_croak (fh, 0);
1584 dREQ;
1585
1586 req->type = EIO_READAHEAD;
1587 req->sv1 = newSVsv (fh);
1588 req->int1 = fd;
1589 req->offs = offset;
1590 req->size = length;
1591
1592 REQ_SEND;
1593}
1594
1595void
1596aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1597 ALIAS:
1598 aio_stat = EIO_STAT
1599 aio_lstat = EIO_LSTAT
1600 aio_statvfs = EIO_STATVFS
1601 PPCODE:
1602{
1603 dREQ;
1604
1605 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1606
1607 REQ_SEND;
1608}
1609
1610UV
1611major (UV dev)
1612 ALIAS:
1613 minor = 1
824 CODE: 1614 CODE:
1615 RETVAL = ix ? minor (dev) : major (dev);
1616 OUTPUT:
1617 RETVAL
1618
1619UV
1620makedev (UV maj, UV min)
1621 CODE:
1622 RETVAL = makedev (maj, min);
1623 OUTPUT:
1624 RETVAL
1625
1626void
1627aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1628 PPCODE:
1629{
1630 dREQ;
1631
1632 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1633 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1634 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1635
1636 REQ_SEND;
1637}
1638
1639void
1640aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1641 PPCODE:
1642{
1643 dREQ;
1644
1645 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1646 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1647
1648 REQ_SEND;
1649}
1650
1651void
1652aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1653 PPCODE:
1654{
1655 dREQ;
1656
1657 req->int2 = mode;
1658 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1659
1660 REQ_SEND;
1661}
1662
1663void
1664aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1665 PPCODE:
1666{
1667 dREQ;
1668
1669 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1670 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1671 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1672
1673 REQ_SEND;
1674}
1675
1676void
1677aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1678 PPCODE:
1679{
1680 dREQ;
1681
1682 req->type = EIO_READDIR;
1683 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1684
1685 if (flags & EIO_READDIR_DENTS)
1686 req->int1 |= EIO_READDIR_CUSTOM2;
1687
1688 req_set_path1 (req, pathname);
1689
1690 REQ_SEND;
1691}
1692
1693void
1694aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1695 PPCODE:
1696{
1697 dREQ;
1698
1699 req->type = EIO_MKDIR;
1700 req->int2 = mode;
1701 req_set_path1 (req, pathname);
1702
1703 REQ_SEND;
1704}
1705
1706void
1707aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1708 ALIAS:
1709 aio_unlink = EIO_UNLINK
1710 aio_rmdir = EIO_RMDIR
1711 aio_readdir = EIO_READDIR
1712 PPCODE:
825{ 1713{
826 dREQ; 1714 dREQ;
827 1715
828 req->type = ix; 1716 req->type = ix;
829 req->data = newSVsv (pathname); 1717 req_set_path1 (req, pathname);
830 req->dataptr = SvPVbyte_nolen (req->data);
831
832 send_req (req);
833}
834 1718
1719 REQ_SEND;
1720}
1721
835void 1722void
836aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1723aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
837 SV * oldpath 1724 ALIAS:
838 SV * newpath 1725 aio_link = EIO_LINK
839 SV * callback 1726 aio_symlink = EIO_SYMLINK
1727 aio_rename = EIO_RENAME
840 CODE: 1728 PPCODE:
841{ 1729{
1730 eio_wd wd2 = 0;
842 dREQ; 1731 dREQ;
843 1732
844 req->type = REQ_SYMLINK; 1733 req->type = ix;
845 req->fh = newSVsv (oldpath); 1734 req_set_path1 (req, oldpath);
846 req->data2ptr = SvPVbyte_nolen (req->fh); 1735 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
847 req->data = newSVsv (newpath); 1736 req->int3 = (long)wd2;
848 req->dataptr = SvPVbyte_nolen (req->data);
849 1737
850 send_req (req); 1738 REQ_SEND;
851} 1739}
852 1740
853void 1741void
854flush() 1742aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
855 PROTOTYPE: 1743 PPCODE:
1744{
1745 eio_wd wd2 = 0;
1746 dREQ;
1747
1748 req->type = EIO_RENAME;
1749 req_set_path1 (req, oldpath);
1750 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1751 req->int2 = flags;
1752 req->int3 = (long)wd2;
1753
1754 REQ_SEND;
1755}
1756
1757void
1758aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1759 PPCODE:
1760{
1761 dREQ;
1762
1763 req->type = EIO_MKNOD;
1764 req->int2 = (mode_t)mode;
1765 req->offs = dev;
1766 req_set_path1 (req, pathname);
1767
1768 REQ_SEND;
1769}
1770
1771void
1772aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1773 ALIAS:
1774 aio_mtouch = EIO_MTOUCH
1775 aio_msync = EIO_MSYNC
1776 PPCODE:
1777{
1778 STRLEN svlen;
1779 char *svptr = SvPVbyte (data, svlen);
1780 UV len = SvUV (length);
1781
1782 if (flags < 0)
1783 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1784
1785 if (offset < 0)
1786 offset += svlen;
1787
1788 if (offset < 0 || offset > svlen)
1789 croak ("offset outside of scalar");
1790
1791 if (!SvOK (length) || len + offset > svlen)
1792 len = svlen - offset;
1793
1794 {
1795 dREQ;
1796
1797 req->type = ix;
1798 req->sv2 = SvREFCNT_inc (data);
1799 req->ptr2 = (char *)svptr + offset;
1800 req->size = len;
1801 req->int1 = flags;
1802
1803 REQ_SEND;
1804 }
1805}
1806
1807void
1808aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1809 PPCODE:
1810{
1811 STRLEN svlen;
1812 char *svptr = SvPVbyte (data, svlen);
1813 UV len = SvUV (length);
1814
1815 if (offset < 0)
1816 offset += svlen;
1817
1818 if (offset < 0 || offset > svlen)
1819 croak ("offset outside of scalar");
1820
1821 if (!SvOK (length) || len + offset > svlen)
1822 len = svlen - offset;
1823
1824 {
1825 dREQ;
1826
1827 req->type = EIO_MLOCK;
1828 req->sv2 = SvREFCNT_inc (data);
1829 req->ptr2 = (char *)svptr + offset;
1830 req->size = len;
1831
1832 REQ_SEND;
1833 }
1834}
1835
1836void
1837aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1838 PPCODE:
1839{
1840 dREQ;
1841
1842 req->type = EIO_MLOCKALL;
1843 req->int1 = flags;
1844
1845 REQ_SEND;
1846}
1847
1848void
1849aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1850 PPCODE:
1851{
1852 int fd = s_fileno_croak (fh, 0);
1853 dREQ;
1854
1855 req->type = EIO_CUSTOM;
1856 req->sv1 = newSVsv (fh);
1857 req->int1 = fd;
1858
1859 req->feed = fiemap;
1860#if HAVE_FIEMAP
1861 /* keep our fingers crossed that the next two types are 64 bit */
1862 req->offs = start;
1863 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1864 req->int2 = flags;
1865 req->int3 = SvOK (count) ? SvIV (count) : -1;
1866#endif
1867
1868 REQ_SEND;
1869}
1870
1871void
1872aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1873 PPCODE:
1874{
1875 char *svptr = 0;
1876
1877 sv_clear_foreign (data);
1878
1879 if (length) /* known length, directly read into scalar */
1880 {
1881 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1882 svptr = sv_grow (data, length + 1);
1883 else if (SvCUR (data) < length)
1884 croak ("length outside of scalar, and cannot grow");
1885 else
1886 svptr = SvPVbyte_nolen (data);
1887 }
1888
1889 {
1890 dREQ;
1891
1892 req->type = EIO_SLURP;
1893 req_set_path1 (req, pathname);
1894 req->offs = offset;
1895 req->size = length;
1896 req->sv2 = SvREFCNT_inc (data);
1897 req->ptr2 = svptr;
1898
1899 if (!SvREADONLY (data))
1900 {
1901 SvREADONLY_on (data);
1902 req->flags |= FLAG_SV2_RO_OFF;
1903 }
1904
1905 REQ_SEND;
1906 }
1907}
1908
1909void
1910aio_busy (double delay, SV *callback = &PL_sv_undef)
1911 PPCODE:
1912{
1913 dREQ;
1914
1915 req->type = EIO_BUSY;
1916 req->nv1 = delay < 0. ? 0. : delay;
1917
1918 REQ_SEND;
1919}
1920
1921void
1922aio_group (SV *callback = &PL_sv_undef)
1923 PPCODE:
1924{
1925 dREQ;
1926
1927 req->type = EIO_GROUP;
1928
1929 PUTBACK;
1930 req_submit (req);
1931 SPAGAIN;
1932
1933 XPUSHs (req_sv (req, aio_grp_stash));
1934}
1935
1936void
1937aio_nop (SV *callback = &PL_sv_undef)
1938 ALIAS:
1939 aio_nop = EIO_NOP
1940 aio_sync = EIO_SYNC
1941 PPCODE:
1942{
1943 dREQ;
1944
1945 req->type = ix;
1946
1947 REQ_SEND;
1948}
1949
1950int
1951aioreq_pri (int pri = NO_INIT)
856 CODE: 1952 CODE:
1953 RETVAL = next_pri;
1954 if (items > 0)
1955 {
1956 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1957 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1958 next_pri = pri;
1959 }
1960 OUTPUT:
1961 RETVAL
1962
1963void
1964aioreq_nice (int nice = 0)
1965 CODE:
1966 nice = next_pri - nice;
1967 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1968 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1969 next_pri = nice;
1970
1971void
1972flush ()
1973 CODE:
857 while (nreqs) 1974 while (eio_nreqs ())
858 { 1975 {
859 poll_wait (); 1976 poll_wait ();
860 poll_cb (); 1977 poll_cb ();
861 } 1978 }
862 1979
863void 1980int
864poll() 1981poll ()
865 PROTOTYPE:
866 CODE: 1982 CODE:
867 if (nreqs)
868 {
869 poll_wait (); 1983 poll_wait ();
870 poll_cb (); 1984 RETVAL = poll_cb ();
871 }
872
873int
874poll_fileno()
875 PROTOTYPE:
876 CODE:
877 RETVAL = respipe [0];
878 OUTPUT: 1985 OUTPUT:
879 RETVAL 1986 RETVAL
880 1987
881int 1988int
1989poll_fileno ()
1990 CODE:
1991 RETVAL = s_epipe_fd (&respipe);
1992 OUTPUT:
1993 RETVAL
1994
1995int
882poll_cb(...) 1996poll_cb (...)
883 PROTOTYPE: 1997 PROTOTYPE:
884 CODE: 1998 CODE:
885 RETVAL = poll_cb (); 1999 RETVAL = poll_cb ();
886 OUTPUT: 2000 OUTPUT:
887 RETVAL 2001 RETVAL
888 2002
889void 2003void
890poll_wait() 2004poll_wait ()
891 PROTOTYPE:
892 CODE: 2005 CODE:
893 if (nreqs)
894 poll_wait (); 2006 poll_wait ();
895 2007
896int 2008int
897nreqs() 2009nreqs ()
898 PROTOTYPE:
899 CODE: 2010 CODE:
900 RETVAL = nreqs; 2011 RETVAL = eio_nreqs ();
901 OUTPUT: 2012 OUTPUT:
902 RETVAL 2013 RETVAL
903 2014
2015int
2016nready ()
2017 CODE:
2018 RETVAL = eio_nready ();
2019 OUTPUT:
2020 RETVAL
2021
2022int
2023npending ()
2024 CODE:
2025 RETVAL = eio_npending ();
2026 OUTPUT:
2027 RETVAL
2028
2029int
2030nthreads ()
2031 CODE:
2032 RETVAL = eio_nthreads ();
2033 OUTPUT:
2034 RETVAL
2035
2036int
2037fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2038 CODE:
2039 RETVAL = posix_fadvise (fh, offset, length, advice);
2040 OUTPUT:
2041 RETVAL
2042
2043IV
2044sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2045 CODE:
2046 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2047 OUTPUT:
2048 RETVAL
2049
2050void
2051mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2052 PPCODE:
2053 sv_clear_foreign (scalar);
2054{
2055 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2056 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2057 if (addr == (void *)-1)
2058 XSRETURN_NO;
2059
2060 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2061
2062 if (!(prot & PROT_WRITE))
2063 SvREADONLY_on (scalar);
2064
2065 XSRETURN_YES;
2066}
2067
2068void
2069munmap (SV *scalar)
2070 CODE:
2071 sv_clear_foreign (scalar);
2072
2073SV *
2074mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
2075 CODE:
2076{
2077 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2078 void *new;
2079
2080 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2081 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2082
2083 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2084
2085 RETVAL = &PL_sv_no;
2086
2087 if (new != (void *)-1)
2088 {
2089 RETVAL = new == (void *)mg->mg_ptr
2090 ? newSVpvn ("0 but true", 10)
2091 : &PL_sv_yes;
2092
2093 mg->mg_ptr = (char *)new;
2094 mg->mg_obj = (SV *)new_length;
2095
2096 SvPVX (scalar) = mg->mg_ptr;
2097 SvCUR_set (scalar, new_length);
2098 }
2099}
2100 OUTPUT:
2101 RETVAL
2102
2103int
2104madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2105 ALIAS:
2106 mprotect = 1
2107 CODE:
2108{
2109 STRLEN svlen;
2110 void *addr = SvPVbyte (scalar, svlen);
2111 STRLEN len = SvUV (length);
2112
2113 if (offset < 0)
2114 offset += svlen;
2115
2116 if (offset < 0 || offset > svlen)
2117 croak ("offset outside of scalar");
2118
2119 if (!SvOK (length) || len + offset > svlen)
2120 len = svlen - offset;
2121
2122 addr = (void *)(((intptr_t)addr) + offset);
2123 eio_page_align (&addr, &len);
2124
2125 switch (ix)
2126 {
2127 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2128 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2129 }
2130}
2131 OUTPUT:
2132 RETVAL
2133
2134int
2135munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2136 CODE:
2137{
2138 STRLEN svlen;
2139 void *addr = SvPVbyte (scalar, svlen);
2140 size_t len = SvUV (length);
2141
2142 if (offset < 0)
2143 offset += svlen;
2144
2145 if (offset < 0 || offset > svlen)
2146 croak ("offset outside of scalar");
2147
2148 if (!SvOK (length) || len + offset > svlen)
2149 len = svlen - offset;
2150
2151 addr = (void *)(((intptr_t)addr) + offset);
2152 eio_page_align (&addr, &len);
2153#if _POSIX_MEMLOCK_RANGE
2154 RETVAL = munlock (addr, len);
2155#else
2156 RETVAL = EIO_ENOSYS ();
2157#endif
2158}
2159 OUTPUT:
2160 RETVAL
2161
2162int
2163munlockall ()
2164 CODE:
2165#if _POSIX_MEMLOCK
2166 munlockall ();
2167#else
2168 RETVAL = EIO_ENOSYS ();
2169#endif
2170 OUTPUT:
2171 RETVAL
2172
2173int
2174splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2175 CODE:
2176{
2177#if HAVE_LINUX_SPLICE
2178 loff_t off_in_, off_out_;
2179 RETVAL = splice (
2180 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2181 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2182 length, flags
2183 );
2184#else
2185 RETVAL = EIO_ENOSYS ();
2186#endif
2187}
2188 OUTPUT:
2189 RETVAL
2190
2191int
2192tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2193 CODE:
2194#if HAVE_LINUX_SPLICE
2195 RETVAL = tee (rfh, wfh, length, flags);
2196#else
2197 RETVAL = EIO_ENOSYS ();
2198#endif
2199 OUTPUT:
2200 RETVAL
2201
2202int
2203pipesize (aio_rfd rfh, int new_size = -1)
2204 PROTOTYPE: $;$
2205 CODE:
2206#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2207 if (new_size >= 0)
2208 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2209 else
2210 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2211#else
2212 errno = ENOSYS;
2213 RETVAL = -1;
2214#endif
2215 OUTPUT:
2216 RETVAL
2217
2218void
2219pipe2 (int flags = 0)
2220 PROTOTYPE: ;$
2221 PPCODE:
2222{
2223 int fd[2];
2224 int res;
2225
2226 if (flags)
2227#if HAVE_PIPE2
2228 res = pipe2 (fd, flags);
2229#else
2230 res = (errno = ENOSYS, -1);
2231#endif
2232 else
2233 res = pipe (fd);
2234
2235 if (!res)
2236 {
2237 EXTEND (SP, 2);
2238 PUSHs (newmortalFH (fd[0], O_RDONLY));
2239 PUSHs (newmortalFH (fd[1], O_WRONLY));
2240 }
2241}
2242
2243void
2244eventfd (unsigned int initval = 0, int flags = 0)
2245 PPCODE:
2246{
2247 int fd;
2248#if HAVE_EVENTFD
2249 fd = eventfd (initval, flags);
2250#else
2251 fd = (errno = ENOSYS, -1);
2252#endif
2253
2254 XPUSHs (newmortalFH (fd, O_RDWR));
2255}
2256
2257void
2258timerfd_create (int clockid, int flags = 0)
2259 PPCODE:
2260{
2261 int fd;
2262#if HAVE_TIMERFD
2263 fd = timerfd_create (clockid, flags);
2264#else
2265 fd = (errno = ENOSYS, -1);
2266#endif
2267
2268 XPUSHs (newmortalFH (fd, O_RDWR));
2269}
2270
2271void
2272timerfd_settime (SV *fh, int flags, NV interval, NV value)
2273 PPCODE:
2274{
2275 int fd = s_fileno_croak (fh, 0);
2276#if HAVE_TIMERFD
2277 int res;
2278 struct itimerspec its, ots;
2279
2280 ts_set (&its.it_interval, interval);
2281 ts_set (&its.it_value , value);
2282 res = timerfd_settime (fd, flags, &its, &ots);
2283
2284 if (!res)
2285 {
2286 EXTEND (SP, 2);
2287 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2288 PUSHs (newSVnv (ts_get (&ots.it_value)));
2289 }
2290#else
2291 errno = ENOSYS;
2292#endif
2293}
2294
2295void
2296timerfd_gettime (SV *fh)
2297 PPCODE:
2298{
2299 int fd = s_fileno_croak (fh, 0);
2300#if HAVE_TIMERFD
2301 int res;
2302 struct itimerspec ots;
2303 res = timerfd_gettime (fd, &ots);
2304
2305 if (!res)
2306 {
2307 EXTEND (SP, 2);
2308 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2309 PUSHs (newSVnv (ts_get (&ots.it_value)));
2310 }
2311#else
2312 errno = ENOSYS;
2313#endif
2314}
2315
2316UV
2317get_fdlimit ()
2318 CODE:
2319#if HAVE_RLIMITS
2320 struct rlimit rl;
2321 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2322 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2323#endif
2324 XSRETURN_UNDEF;
2325 OUTPUT:
2326 RETVAL
2327
2328void
2329min_fdlimit (UV limit = 0x7fffffffU)
2330 CODE:
2331{
2332#if HAVE_RLIMITS
2333 struct rlimit rl;
2334 rlim_t orig_rlim_max;
2335 UV bit;
2336
2337 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2338 goto fail;
2339
2340 if (rl.rlim_cur == RLIM_INFINITY)
2341 XSRETURN_YES;
2342
2343 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2344
2345 if (rl.rlim_cur < limit)
2346 {
2347 rl.rlim_cur = limit;
2348
2349 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2350 rl.rlim_max = rl.rlim_cur;
2351 }
2352
2353 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2354 XSRETURN_YES;
2355
2356 if (errno == EPERM)
2357 {
2358 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2359 /* our limit overflows a system-wide limit */
2360 /* try an adaptive algorithm, but do not lower the hardlimit */
2361 rl.rlim_max = 0;
2362 for (bit = 0x40000000U; bit; bit >>= 1)
2363 {
2364 rl.rlim_max |= bit;
2365 rl.rlim_cur = rl.rlim_max;
2366
2367 /* nevr decrease the hard limit */
2368 if (rl.rlim_max < orig_rlim_max)
2369 break;
2370
2371 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2372 rl.rlim_max &= ~bit; /* too high, remove bit again */
2373 }
2374
2375 /* now, raise the soft limit to the max permitted */
2376 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2377 {
2378 rl.rlim_cur = rl.rlim_max;
2379 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2380 errno = EPERM;
2381 }
2382 }
2383#endif
2384 fail:
2385 XSRETURN_UNDEF;
2386}
2387
2388void _on_next_submit (SV *cb)
2389 CODE:
2390 SvREFCNT_dec (on_next_submit);
2391 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2392
2393PROTOTYPES: DISABLE
2394
2395MODULE = IO::AIO PACKAGE = IO::AIO::WD
2396
2397BOOT:
2398{
2399 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2400 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2401}
2402
2403void
2404DESTROY (SV *self)
2405 CODE:
2406{
2407 aio_wd wd = SvAIO_WD (self);
2408#if HAVE_AT
2409 {
2410 SV *callback = &PL_sv_undef;
2411 dREQ; /* clobbers next_pri :/ */
2412 next_pri = req->pri; /* restore next_pri */
2413 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2414 req->type = EIO_WD_CLOSE;
2415 req->wd = wd;
2416 REQ_SEND;
2417 }
2418#else
2419 eio_wd_close_sync (wd);
2420#endif
2421}
2422
2423MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2424
2425void
2426cancel (aio_req_ornot req)
2427 CODE:
2428 eio_cancel (req);
2429
2430void
2431cb (aio_req_ornot req, SV *callback = NO_INIT)
2432 PPCODE:
2433{
2434 if (GIMME_V != G_VOID)
2435 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2436
2437 if (items > 1)
2438 {
2439 SV *cb_cv = get_cb (callback);
2440
2441 SvREFCNT_dec (req->callback);
2442 req->callback = SvREFCNT_inc (cb_cv);
2443 }
2444}
2445
2446MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2447
2448void
2449add (aio_req grp, ...)
2450 PPCODE:
2451{
2452 int i;
2453
2454 if (grp->int1 == 2)
2455 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2456
2457 for (i = 1; i < items; ++i )
2458 {
2459 aio_req req;
2460
2461 if (GIMME_V != G_VOID)
2462 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2463
2464 req = SvAIO_REQ (ST (i));
2465
2466 if (req)
2467 eio_grp_add (grp, req);
2468 }
2469}
2470
2471void
2472cancel_subs (aio_req_ornot req)
2473 CODE:
2474 req_cancel_subs (req);
2475
2476void
2477result (aio_req grp, ...)
2478 CODE:
2479{
2480 int i;
2481 AV *av;
2482
2483 grp->errorno = errno;
2484
2485 av = newAV ();
2486 av_extend (av, items - 1);
2487
2488 for (i = 1; i < items; ++i )
2489 av_push (av, newSVsv (ST (i)));
2490
2491 SvREFCNT_dec (grp->sv1);
2492 grp->sv1 = (SV *)av;
2493}
2494
2495void
2496errno (aio_req grp, int errorno = errno)
2497 CODE:
2498 grp->errorno = errorno;
2499
2500void
2501limit (aio_req grp, int limit)
2502 CODE:
2503 eio_grp_limit (grp, limit);
2504
2505void
2506feed (aio_req grp, SV *callback = &PL_sv_undef)
2507 CODE:
2508{
2509 SvREFCNT_dec (grp->sv2);
2510 grp->sv2 = newSVsv (callback);
2511 grp->feed = aio_grp_feed;
2512
2513 if (grp->int2 <= 0)
2514 grp->int2 = 2;
2515
2516 eio_grp_limit (grp, grp->int2);
2517}
2518

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