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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs.
Revision 1.257 by root, Tue Jul 17 23:20:09 2018 UTC

1#define _XOPEN_SOURCE 500 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
7#include <sys/types.h> 12#include <sys/types.h>
8#include <sys/stat.h> 13#include <sys/stat.h>
9
10#include <unistd.h> 14#include <limits.h>
11#include <fcntl.h> 15#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 16#include <sched.h>
14#if __linux 17
18#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
15#include <sys/syscall.h> 19# include <sys/mman.h>
20#endif
21
22/* the incompetent fool that created musl keeps __linux__, refuses
23 * to implement any linux standard apis, and also has no way to test
24 * for his broken iplementation. don't complain to me if this fails
25 * for you.
26 */
27#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
28# include <linux/fs.h>
29# ifdef FS_IOC_FIEMAP
30# include <linux/types.h>
31# include <linux/fiemap.h>
32# define HAVE_FIEMAP 1
16#endif 33# endif
34#endif
17 35
18#include <pthread.h> 36/* perl namespace pollution */
37#undef VERSION
19 38
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 39/* perl stupidly overrides readdir and maybe others */
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 40/* with thread-unsafe versions, imagine that :( */
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 41#undef readdir
42#undef opendir
43#undef closedir
23 44
24#if __ia64 45#ifdef _WIN32
25# define STACKSIZE 65536 46
47 // perl overrides all those nice libc functions
48
49 #undef malloc
50 #undef free
51 #undef open
52 #undef read
53 #undef write
54 #undef send
55 #undef recv
56 #undef stat
57 #undef lstat
58 #undef fstat
59 #undef truncate
60 #undef ftruncate
61 #undef open
62 #undef link
63 #undef close
64 #undef unlink
65 #undef mkdir
66 #undef rmdir
67 #undef rename
68 #undef lseek
69 #undef opendir
70 #undef readdir
71 #undef closedir
72 #undef chmod
73 #undef fchmod
74 #undef dup
75 #undef dup2
76 #undef abort
77 #undef pipe
78
79 #define EIO_STRUCT_STAT struct _stati64
80 #define EIO_STRUCT_STATI64
81
26#else 82#else
27# define STACKSIZE 4096 83
84 #include <sys/time.h>
85 #include <sys/select.h>
86 #include <unistd.h>
87 #include <utime.h>
88 #include <signal.h>
89
90 #define EIO_STRUCT_STAT Stat_t
91
92#endif
93
94/*****************************************************************************/
95
96#if __GNUC__ >= 3
97# define expect(expr,value) __builtin_expect ((expr),(value))
98#else
99# define expect(expr,value) (expr)
100#endif
101
102#define expect_false(expr) expect ((expr) != 0, 0)
103#define expect_true(expr) expect ((expr) != 0, 1)
104
105/*****************************************************************************/
106
107#include "libeio/config.h"
108
109#include "schmorp.h"
110
111#if HAVE_EVENTFD
112# include <sys/eventfd.h>
113#endif
114
115#if HAVE_TIMERFD
116# include <sys/timerfd.h>
117#endif
118
119#if HAVE_RLIMITS
120 #include <sys/time.h>
121 #include <sys/resource.h>
122#endif
123
124typedef SV SV8; /* byte-sv, used for argument-checking */
125typedef int aio_rfd; /* read file desriptor */
126typedef int aio_wfd; /* write file descriptor */
127
128static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
129
130#define EIO_REQ_MEMBERS \
131 SV *callback; \
132 SV *sv1, *sv2; \
133 SV *sv3, *sv4; \
134 STRLEN stroffset; \
135 SV *self;
136
137#define EIO_NO_WRAPPERS 1
138
139#include "libeio/eio.h"
140
141static int req_invoke (eio_req *req);
142#define EIO_FINISH(req) req_invoke (req)
143static void req_destroy (eio_req *grp);
144#define EIO_DESTROY(req) req_destroy (req)
145
146#include "libeio/eio.c"
147
148#if !HAVE_POSIX_FADVISE
149# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
150#endif
151
152#if !HAVE_POSIX_MADVISE
153# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
154#endif
155
156#ifndef MAP_ANONYMOUS
157# ifdef MAP_ANON
158# define MAP_ANONYMOUS MAP_ANON
159# else
160# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 161# endif
162#endif
163
164/* defines all sorts of constants to 0 unless they are already defined */
165/* also provides const_iv_ and const_niv_ macros for them */
166#include "def0.h"
167
168#ifndef makedev
169# define makedev(maj,min) (((maj) << 8) | (min))
170#endif
171#ifndef major
172# define major(dev) ((dev) >> 8)
173#endif
174#ifndef minor
175# define minor(dev) ((dev) & 0xff)
176#endif
177
178#if PAGESIZE <= 0
179# define PAGESIZE sysconf (_SC_PAGESIZE)
180#endif
181
182/*****************************************************************************/
183
184#if !_POSIX_MAPPED_FILES
185# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
186# define munmap(addr,length) EIO_ENOSYS ()
187#endif
188
189#if !_POSIX_MEMORY_PROTECTION
190# define mprotect(addr,len,prot) EIO_ENOSYS ()
191#endif
192
193#if !MREMAP_MAYMOVE
194# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
195#endif
196
197#define FOREIGN_MAGIC PERL_MAGIC_ext
198
199static int ecb_cold
200mmap_free (pTHX_ SV *sv, MAGIC *mg)
201{
202 int old_errno = errno;
203 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
204 errno = old_errno;
205
206 mg->mg_obj = 0; /* just in case */
207
208 SvREADONLY_off (sv);
209
210 if (SvPVX (sv) != mg->mg_ptr)
211 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
212
213 SvCUR_set (sv, 0);
214 SvPVX (sv) = 0;
215 SvOK_off (sv);
216
217 return 0;
218}
219
220static MGVTBL mmap_vtbl = {
221 0, 0, 0, 0, mmap_free
222};
223
224static int ecb_cold
225sysfree_free (pTHX_ SV *sv, MAGIC *mg)
226{
227 free (mg->mg_ptr);
228 mg->mg_obj = 0; /* just in case */
229
230 SvREADONLY_off (sv);
231
232 if (SvPVX (sv) != mg->mg_ptr)
233 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
234
235 SvCUR_set (sv, 0);
236 SvPVX (sv) = 0;
237 SvOK_off (sv);
238
239 return 0;
240}
241
242static MGVTBL sysfree_vtbl = {
243 0, 0, 0, 0, sysfree_free
244};
245
246/*****************************************************************************/
247
248/* helper: set scalar to foreign ptr with custom free */
249static void
250sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
251{
252 sv_force_normal (sv);
253
254 /* we store the length in mg_obj, as namlen is I32 :/ */
255 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
256 ->mg_obj = (SV *)length;
257
258 SvUPGRADE (sv, SVt_PV); /* nop... */
259
260 if (SvLEN (sv))
261 Safefree (SvPVX (sv));
262
263 SvPVX (sv) = (char *)addr;
264 SvCUR_set (sv, length);
265 SvLEN_set (sv, 0);
266 SvPOK_only (sv);
267}
268
269static void
270sv_clear_foreign (SV *sv)
271{
272 /* todo: iterate over magic and only free ours, but of course */
273 /* the perl5porters will call that (correct) behaviour buggy */
274 sv_unmagic (sv, FOREIGN_MAGIC);
275}
276
277/*****************************************************************************/
278
279static void
280fiemap (eio_req *req)
281{
282 req->result = -1;
283
284#if HAVE_FIEMAP
285 /* assume some c99 */
286 struct fiemap *fiemap = 0;
287 size_t end_offset;
288 int count = req->int3;
289
290 req->flags |= EIO_FLAG_PTR1_FREE;
291
292 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
293 /* increase in 3.5kb steps */
294 if (count < 0)
295 count = 8;
296
297 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
298 errno = ENOMEM;
299 if (!fiemap)
300 return;
301
302 req->ptr1 = fiemap;
303
304 fiemap->fm_start = req->offs;
305 fiemap->fm_length = req->size;
306 fiemap->fm_flags = req->int2;
307 fiemap->fm_extent_count = count;
308
309 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
310 return;
311
312 if (req->int3 >= 0 /* not autosizing */
313 || !fiemap->fm_mapped_extents /* no more extents */
314 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
315 goto done;
316
317 /* else we have to loop -
318 * it would be tempting (actually I tried that first) to just query the
319 * number of extents needed, but linux often feels like not returning all
320 * extents, without telling us it left any out. this complicates
321 * this quite a bit.
322 */
323
324 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
325
326 for (;;)
327 {
328 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
329 char scratch[3072];
330 struct fiemap *incmap = (struct fiemap *)scratch;
331
332 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
333 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
334 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
335 incmap->fm_flags = fiemap->fm_flags;
336 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
337
338 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
339 return;
340
341 if (!incmap->fm_mapped_extents)
342 goto done;
343
344 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
345 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
346 errno = ENOMEM;
347 if (!fiemap)
348 return;
349
350 req->ptr1 = fiemap;
351
352 for (count = 0; count < incmap->fm_mapped_extents; ++count)
353 {
354 struct fiemap_extent *e = incmap->fm_extents + count;
355
356 if (e->fe_logical + e->fe_length >= end_offset)
357 goto done;
358
359 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
360
361 if (e->fe_flags & FIEMAP_EXTENT_LAST)
362 goto done;
363
364 }
365 }
366
367done:
368 req->result = 0;
369
370#else
371 errno = ENOSYS;
372#endif
373}
374
375/*****************************************************************************/
29 376
30enum { 377enum {
31 REQ_QUIT, 378 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 379};
37 380
38typedef struct aio_cb {
39 struct aio_cb *volatile next;
40
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback, *fh;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 381typedef eio_req *aio_req;
382typedef eio_req *aio_req_ornot;
383typedef eio_wd aio_wd;
57 384
58static int started; 385static SV *on_next_submit;
59static volatile int nreqs; 386static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 387static int max_outstanding;
61static int respipe [2];
62 388
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 389static s_epipe respipe;
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 390
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 391static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 392static void req_cancel (aio_req req);
69 393
70static void 394static void
71poll_wait () 395want_poll (void)
72{ 396{
73 if (nreqs && !ress) 397 /* write a dummy byte to the pipe so fh becomes ready */
398 s_epipe_signal (&respipe);
399}
400
401static void
402done_poll (void)
403{
404 /* read any signals sent by the worker threads */
405 s_epipe_drain (&respipe);
406}
407
408/* must be called at most once */
409static SV *
410req_sv (aio_req req, HV *stash)
411{
412 if (!req->self)
74 { 413 {
75 fd_set rfd; 414 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 415 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 416 }
417
418 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
419}
420
421static SV *
422newSVaio_wd (aio_wd wd)
423{
424 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
425}
426
427static aio_req
428SvAIO_REQ (SV *sv)
429{
430 MAGIC *mg;
431
432 if (!SvROK (sv)
433 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
434 || (SvSTASH (SvRV (sv)) != aio_grp_stash
435 && SvSTASH (SvRV (sv)) != aio_req_stash
436 && !sv_derived_from (sv, "IO::AIO::REQ")))
437 croak ("object of class IO::AIO::REQ expected");
438
439 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
440
441 return mg ? (aio_req)mg->mg_ptr : 0;
442}
443
444static aio_wd
445SvAIO_WD (SV *sv)
446{
447 if (!SvROK (sv)
448 || SvTYPE (SvRV (sv)) != SVt_PVMG
449 || SvSTASH (SvRV (sv)) != aio_wd_stash)
450 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
451
452 return (aio_wd)(long)SvIVX (SvRV (sv));
453}
454
455static SV *
456newmortalFH (int fd, int flags)
457{
458 if (fd < 0)
459 return &PL_sv_undef;
460
461 GV *gv = (GV *)sv_newmortal ();
462 char sym[64];
463 int symlen;
464
465 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
466 gv_init (gv, aio_stash, sym, symlen, 0);
467
468 symlen = snprintf (
469 sym,
470 sizeof (sym),
471 "%s&=%d",
472 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
473 fd
474 );
475
476 return do_open (gv, sym, symlen, 0, 0, 0, 0)
477 ? (SV *)gv : &PL_sv_undef;
478}
479
480static void
481aio_grp_feed (aio_req grp)
482{
483 if (grp->sv2 && SvOK (grp->sv2))
484 {
485 dSP;
486
487 ENTER;
488 SAVETMPS;
489 PUSHMARK (SP);
490 XPUSHs (req_sv (grp, aio_grp_stash));
491 PUTBACK;
492 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
493 SPAGAIN;
494 FREETMPS;
495 LEAVE;
496 }
497}
498
499static void
500req_submit (eio_req *req)
501{
502 eio_submit (req);
503
504 if (expect_false (on_next_submit))
505 {
506 dSP;
507 SV *cb = sv_2mortal (on_next_submit);
508
509 on_next_submit = 0;
510
511 PUSHMARK (SP);
512 PUTBACK;
513 call_sv (cb, G_DISCARD | G_EVAL);
514 }
81} 515}
82 516
83static int 517static int
84poll_cb () 518req_invoke (eio_req *req)
85{ 519{
86 dSP; 520 if (req->flags & FLAG_SV2_RO_OFF)
87 int count = 0; 521 SvREADONLY_off (req->sv2);
88 aio_req req, prv;
89 522
90 pthread_mutex_lock (&reslock); 523 if (!EIO_CANCELLED (req) && req->callback)
91
92 {
93 /* read any signals sent by the worker threads */
94 char buf [32];
95 while (read (respipe [0], buf, 32) > 0)
96 ;
97 }
98
99 req = ress;
100 ress = rese = 0;
101
102 pthread_mutex_unlock (&reslock);
103
104 while (req)
105 { 524 {
106 nreqs--; 525 dSP;
526 static SV *sv_result_cache; /* caches the result integer SV */
527 SV *sv_result;
107 528
108 if (req->type == REQ_QUIT) 529 ENTER;
109 started--; 530 SAVETMPS;
110 else 531 PUSHMARK (SP);
532 EXTEND (SP, 1);
533
534 /* do not recreate the result IV from scratch each time */
535 if (expect_true (sv_result_cache))
111 { 536 {
112 int errorno = errno; 537 sv_result = sv_result_cache; sv_result_cache = 0;
113 errno = req->errorno; 538 SvIV_set (sv_result, req->result);
114 539 SvIOK_only (sv_result);
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->fh)
123 SvREFCNT_dec (req->fh);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 ENTER;
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = SvREFCNT_inc (POPs);
148
149 PUSHMARK (SP);
150 XPUSHs (sv_2mortal (fh));
151 }
152
153 if (SvOK (req->callback))
154 {
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158 }
159
160 LEAVE;
161
162 if (req->callback)
163 SvREFCNT_dec (req->callback);
164
165 errno = errorno;
166 count++;
167 }
168
169 prv = req;
170 req = req->next;
171 Safefree (prv);
172
173 /* TODO: croak on errors? */
174 }
175
176 return count;
177}
178
179static void *aio_proc(void *arg);
180
181static void
182start_thread (void)
183{
184 sigset_t fullsigset, oldsigset;
185 pthread_t tid;
186 pthread_attr_t attr;
187
188 pthread_attr_init (&attr);
189 pthread_attr_setstacksize (&attr, STACKSIZE);
190 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
191
192 sigfillset (&fullsigset);
193 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
194
195 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
196 started++;
197
198 sigprocmask (SIG_SETMASK, &oldsigset, 0);
199}
200
201static void
202send_req (aio_req req)
203{
204 nreqs++;
205
206 pthread_mutex_lock (&reqlock);
207
208 req->next = 0;
209
210 if (reqe)
211 {
212 reqe->next = req;
213 reqe = req;
214 }
215 else
216 reqe = reqs = req;
217
218 pthread_cond_signal (&reqwait);
219 pthread_mutex_unlock (&reqlock);
220
221 while (nreqs > max_outstanding)
222 {
223 poll_wait ();
224 poll_cb ();
225 }
226}
227
228static void
229end_thread (void)
230{
231 aio_req req;
232 New (0, req, 1, aio_cb);
233 req->type = REQ_QUIT;
234
235 send_req (req);
236}
237
238static void *
239aio_proc (void *thr_arg)
240{
241 aio_req req;
242 int type;
243
244 do
245 {
246 pthread_mutex_lock (&reqlock);
247
248 for (;;)
249 {
250 req = reqs;
251
252 if (reqs)
253 {
254 reqs = reqs->next;
255 if (!reqs) reqe = 0;
256 }
257
258 if (req)
259 break;
260
261 pthread_cond_wait (&reqwait, &reqlock);
262 }
263
264 pthread_mutex_unlock (&reqlock);
265
266 errno = 0; /* strictly unnecessary */
267
268 type = req->type;
269
270 switch (type)
271 {
272 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
273 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
274#if SYS_readahead
275 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
276#else
277 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
278#endif
279
280 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
281 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
282 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
283
284 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
285 case REQ_CLOSE: req->result = close (req->fd); break;
286 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
287
288 case REQ_FSYNC: req->result = fsync (req->fd); break;
289 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
290
291 case REQ_QUIT:
292 break;
293
294 default:
295 req->result = ENOSYS;
296 break;
297 }
298
299 req->errorno = errno;
300
301 pthread_mutex_lock (&reslock);
302
303 req->next = 0;
304
305 if (rese)
306 {
307 rese->next = req;
308 rese = req;
309 } 540 }
310 else 541 else
311 { 542 {
312 rese = ress = req; 543 sv_result = newSViv (req->result);
313 544 SvREADONLY_on (sv_result);
314 /* write a dummy byte to the pipe so fh becomes ready */
315 write (respipe [1], &respipe, 1);
316 } 545 }
317 546
318 pthread_mutex_unlock (&reslock); 547 switch (req->type)
548 {
549 case EIO_WD_OPEN:
550 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
551 break;
552
553 case EIO_READDIR:
554 {
555 SV *rv = &PL_sv_undef;
556
557 if (req->result >= 0)
558 {
559 int i;
560 char *names = (char *)req->ptr2;
561 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
562 AV *av = newAV ();
563
564 av_extend (av, req->result - 1);
565
566 for (i = 0; i < req->result; ++i)
567 {
568 if (req->int1 & EIO_READDIR_DENTS)
569 {
570 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
571
572 if (req->int1 & EIO_READDIR_CUSTOM2)
573 {
574 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
575 AV *avent = newAV ();
576
577 av_extend (avent, 2);
578
579 if (!sv_type [ent->type])
580 {
581 sv_type [ent->type] = newSViv (ent->type);
582 SvREADONLY_on (sv_type [ent->type]);
583 }
584
585 av_store (avent, 0, namesv);
586 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
587 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
588
589 av_store (av, i, newRV_noinc ((SV *)avent));
590 }
591 else
592 av_store (av, i, namesv);
593
594 ++ent;
595 }
596 else
597 {
598 SV *name = newSVpv (names, 0);
599 av_store (av, i, name);
600 names += SvCUR (name) + 1;
601 }
602 }
603
604 rv = sv_2mortal (newRV_noinc ((SV *)av));
605 }
606
607 PUSHs (rv);
608
609 if (req->int1 & EIO_READDIR_CUSTOM1)
610 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
611 }
612 break;
613
614 case EIO_OPEN:
615 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
616 break;
617
618 case EIO_STATVFS:
619 case EIO_FSTATVFS:
620 {
621 SV *rv = &PL_sv_undef;
622
623#ifndef _WIN32
624 if (req->result >= 0)
625 {
626 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
627 HV *hv = newHV ();
628 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
629 * chooses to make it a struct.
630 */
631 unsigned long fsid = 0;
632 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
633
634 rv = sv_2mortal (newRV_noinc ((SV *)hv));
635
636 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
637 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
638 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
639 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
640 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
641 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
642 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
643 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
644 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
645 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
646 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
647 }
648#endif
649
650 PUSHs (rv);
651 }
652
653 break;
654
655 case EIO_GROUP:
656 req->int1 = 2; /* mark group as finished */
657
658 if (req->sv1)
659 {
660 int i;
661 AV *av = (AV *)req->sv1;
662
663 EXTEND (SP, AvFILL (av) + 1);
664 for (i = 0; i <= AvFILL (av); ++i)
665 PUSHs (*av_fetch (av, i, 0));
666 }
667 break;
668
669 case EIO_NOP:
670 case EIO_BUSY:
671 break;
672
673 case EIO_READLINK:
674 case EIO_REALPATH:
675 if (req->result > 0)
676 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
677 break;
678
679 case EIO_STAT:
680 case EIO_LSTAT:
681 case EIO_FSTAT:
682 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
683
684 if (!(PL_laststatval = req->result))
685 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
686 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
687
688 PUSHs (sv_result);
689 break;
690
691 case EIO_SEEK:
692 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
693 break;
694
695 case EIO_READ:
696 {
697 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
698 *SvEND (req->sv2) = 0;
699 SvPOK_only (req->sv2);
700 SvSETMAGIC (req->sv2);
701 PUSHs (sv_result);
702 }
703 break;
704
705 case EIO_SLURP:
706 {
707 if (req->result >= 0)
708 {
709 /* if length was originally not known, we steal the malloc'ed memory */
710 if (req->flags & EIO_FLAG_PTR2_FREE)
711 {
712 req->flags &= ~EIO_FLAG_PTR2_FREE;
713 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
714 }
715 else
716 {
717 SvCUR_set (req->sv2, req->result);
718 *SvEND (req->sv2) = 0;
719 SvPOK_only (req->sv2);
720 }
721
722 SvSETMAGIC (req->sv2);
723 }
724
725 PUSHs (sv_result);
726 }
727 break;
728
729 case EIO_CUSTOM:
730 if (req->feed == fiemap)
731 {
732#if HAVE_FIEMAP
733 if (!req->result)
734 {
735 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
736
737 if (fiemap->fm_extent_count)
738 {
739 AV *av = newAV ();
740 int i;
741
742 while (fiemap->fm_mapped_extents)
743 {
744 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
745 AV *ext_av = newAV ();
746
747 av_store (ext_av, 3, newSVuv (extent->fe_flags));
748 av_store (ext_av, 2, newSVval64 (extent->fe_length));
749 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
750 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
751
752 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
753 }
754
755 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
756 }
757 else
758 {
759 SvIV_set (sv_result, fiemap->fm_mapped_extents);
760 PUSHs (sv_result);
761 }
762 }
763#endif
764 }
765 else
766 PUSHs (sv_result);
767 break;
768
769 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
770 if (req->result > 0)
771 SvIV_set (sv_result, 0);
772 /* FALLTHROUGH */
773
774 default:
775 PUSHs (sv_result);
776 break;
777 }
778
779 errno = req->errorno;
780
781 PUTBACK;
782 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
783 SPAGAIN;
784
785 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
786 SvREFCNT_dec (sv_result);
787 else
788 sv_result_cache = sv_result;
789
790 FREETMPS;
791 LEAVE;
792
793 PUTBACK;
319 } 794 }
320 while (type != REQ_QUIT);
321 795
796 return !!SvTRUE (ERRSV);
797}
798
799static void
800req_destroy (aio_req req)
801{
802 if (req->self)
803 {
804 sv_unmagic (req->self, PERL_MAGIC_ext);
805 SvREFCNT_dec (req->self);
806 }
807
808 SvREFCNT_dec (req->sv1);
809 SvREFCNT_dec (req->sv2);
810 SvREFCNT_dec (req->sv3);
811 SvREFCNT_dec (req->sv4);
812 SvREFCNT_dec (req->callback);
813
814 free (req);
815}
816
817static void
818req_cancel_subs (aio_req grp)
819{
820 if (grp->type != EIO_GROUP)
821 return;
822
823 SvREFCNT_dec (grp->sv2);
824 grp->sv2 = 0;
825
826 eio_grp_cancel (grp);
827}
828
829static void ecb_cold
830create_respipe (void)
831{
832 if (s_epipe_renew (&respipe))
833 croak ("IO::AIO: unable to initialize result pipe");
834}
835
836static void
837poll_wait (void)
838{
839 while (eio_nreqs ())
840 {
841 int size;
842
843 X_LOCK (EIO_POOL->reslock);
844 size = EIO_POOL->res_queue.size;
845 X_UNLOCK (EIO_POOL->reslock);
846
847 if (size)
848 return;
849
850 etp_maybe_start_thread (EIO_POOL);
851
852 s_epipe_wait (&respipe);
853 }
854}
855
856static int
857poll_cb (void)
858{
859 for (;;)
860 {
861 int res = eio_poll ();
862
863 if (res > 0)
864 croak (0);
865
866 if (!max_outstanding || max_outstanding > eio_nreqs ())
867 return res;
868
869 poll_wait ();
870 }
871}
872
873static void ecb_cold
874reinit (void)
875{
876 create_respipe ();
877
878 if (eio_init (want_poll, done_poll) < 0)
879 croak ("IO::AIO: unable to initialise eio library");
880}
881
882/*****************************************************************************/
883
884static SV *
885get_cb (SV *cb_sv)
886{
887 SvGETMAGIC (cb_sv);
888 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
889}
890
891static aio_req ecb_noinline
892dreq (SV *callback)
893{
894 SV *cb_cv;
895 aio_req req;
896 int req_pri = next_pri;
897 next_pri = EIO_PRI_DEFAULT;
898
899 cb_cv = get_cb (callback);
900
901 req = calloc (sizeof (*req), 1);
902 if (!req)
903 croak ("out of memory during eio_req allocation");
904
905 req->callback = SvREFCNT_inc (cb_cv);
906 req->pri = req_pri;
907
322 return 0; 908 return req;
323} 909}
910
911#define dREQ \
912 aio_req req = dreq (callback); \
913
914#define REQ_SEND \
915 PUTBACK; \
916 req_submit (req); \
917 SPAGAIN; \
918 \
919 if (GIMME_V != G_VOID) \
920 XPUSHs (req_sv (req, aio_req_stash));
921
922ecb_inline void
923req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
924{
925 if (expect_false (SvROK (path)))
926 {
927 SV *rv = SvRV (path);
928 SV *wdob;
929
930 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
931 {
932 path = AvARRAY (rv)[1];
933 wdob = AvARRAY (rv)[0];
934
935 if (SvOK (wdob))
936 {
937 *wd = SvAIO_WD (wdob);
938 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
939 }
940 else
941 *wd = EIO_INVALID_WD;
942 }
943 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
944 {
945 *wd = (aio_wd)(long)SvIVX (rv);
946 *wdsv = SvREFCNT_inc_NN (rv);
947 *ptr = ".";
948 return; /* path set to "." */
949 }
950 else
951 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
952 }
953
954 *pathsv = newSVsv (path);
955 *ptr = SvPVbyte_nolen (*pathsv);
956}
957
958static void ecb_noinline
959req_set_path1 (aio_req req, SV *path)
960{
961 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
962}
963
964static void ecb_noinline
965req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
966{
967 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
968
969 switch (SvTYPE (rv))
970 {
971 case SVt_PVIO:
972 case SVt_PVLV:
973 case SVt_PVGV:
974 req->type = type_fh;
975 req->sv1 = newSVsv (fh_or_path);
976 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977 break;
978
979 default:
980 req->type = type_path;
981 req_set_path1 (req, fh_or_path);
982 break;
983 }
984}
985
986/*****************************************************************************/
987
988static void
989ts_set (struct timespec *ts, NV value)
990{
991 ts->tv_sec = value;
992 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
993}
994
995static NV
996ts_get (const struct timespec *ts)
997{
998 return ts->tv_sec + ts->tv_nsec * 1e-9;
999}
1000
1001/*****************************************************************************/
1002
1003XS(boot_IO__AIO) ecb_cold;
324 1004
325MODULE = IO::AIO PACKAGE = IO::AIO 1005MODULE = IO::AIO PACKAGE = IO::AIO
326 1006
327PROTOTYPES: ENABLE 1007PROTOTYPES: ENABLE
328 1008
329BOOT: 1009BOOT:
330{ 1010{
331 if (pipe (respipe)) 1011 static const struct {
332 croak ("unable to initialize result pipe"); 1012 const char *name;
1013 IV iv;
1014 } *civ, const_iv[] = {
1015# define const_niv(name, value) { # name, (IV) value },
1016# define const_iv(name) { # name, (IV) name },
1017# define const_eio(name) { # name, (IV) EIO_ ## name },
333 1018
334 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 1019 /* you have to re-run ./gendef0 after adding/removing any constants here */
335 croak ("cannot set result pipe to nonblocking mode"); 1020 /* the first block can be undef if missing */
1021 const_iv (ENOSYS)
1022 const_iv (EXDEV)
1023 const_iv (EBADR)
336 1024
337 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 1025 /* for lseek */
338 croak ("cannot set result pipe to nonblocking mode"); 1026 const_iv (SEEK_DATA)
339} 1027 const_iv (SEEK_HOLE)
340 1028
1029 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1030 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1031 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1032 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1033 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1034 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1035
1036 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1037 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1038 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1039 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1040 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1041
1042 /* the second block will be 0 when missing */
1043 const_iv (O_RDONLY)
1044 const_iv (O_WRONLY)
1045 const_iv (O_RDWR)
1046 const_iv (O_CREAT)
1047 const_iv (O_TRUNC)
1048 const_iv (O_EXCL)
1049 const_iv (O_APPEND)
1050
1051 const_iv (O_ASYNC)
1052 const_iv (O_DIRECT)
1053 const_iv (O_NOATIME)
1054
1055 const_iv (O_CLOEXEC)
1056 const_iv (O_NOCTTY)
1057 const_iv (O_NOFOLLOW)
1058 const_iv (O_NONBLOCK)
1059 const_iv (O_EXEC)
1060 const_iv (O_SEARCH)
1061 const_iv (O_DIRECTORY)
1062 const_iv (O_DSYNC)
1063 const_iv (O_RSYNC)
1064 const_iv (O_SYNC)
1065 const_iv (O_PATH)
1066 const_iv (O_TMPFILE)
1067 const_iv (O_TTY_INIT)
1068
1069 const_iv (S_IFIFO)
1070 const_iv (S_IFCHR)
1071 const_iv (S_IFBLK)
1072 const_iv (S_IFLNK)
1073 const_iv (S_IFREG)
1074 const_iv (S_IFDIR)
1075 const_iv (S_IFWHT)
1076 const_iv (S_IFSOCK)
1077 const_iv (S_IFMT)
1078
1079 const_iv (ST_RDONLY)
1080 const_iv (ST_NOSUID)
1081 const_iv (ST_NODEV)
1082 const_iv (ST_NOEXEC)
1083 const_iv (ST_SYNCHRONOUS)
1084 const_iv (ST_MANDLOCK)
1085 const_iv (ST_WRITE)
1086 const_iv (ST_APPEND)
1087 const_iv (ST_IMMUTABLE)
1088 const_iv (ST_NOATIME)
1089 const_iv (ST_NODIRATIME)
1090 const_iv (ST_RELATIME)
1091
1092 const_iv (PROT_NONE)
1093 const_iv (PROT_EXEC)
1094 const_iv (PROT_READ)
1095 const_iv (PROT_WRITE)
1096
1097 const_iv (MAP_PRIVATE)
1098 const_iv (MAP_SHARED)
1099 const_iv (MAP_FIXED)
1100 const_iv (MAP_ANONYMOUS)
1101
1102 /* linuxish */
1103 const_iv (MAP_LOCKED)
1104 const_iv (MAP_NORESERVE)
1105 const_iv (MAP_POPULATE)
1106 const_iv (MAP_NONBLOCK)
1107 const_iv (MAP_GROWSDOWN)
1108 const_iv (MAP_32BIT)
1109 const_iv (MAP_HUGETLB)
1110 const_iv (MAP_STACK)
1111
1112 const_iv (MREMAP_MAYMOVE)
1113 const_iv (MREMAP_FIXED)
1114
1115 const_iv (F_DUPFD_CLOEXEC)
1116
1117 const_iv (F_OFD_GETLK)
1118 const_iv (F_OFD_SETLK)
1119 const_iv (F_OFD_GETLKW)
1120
1121 const_iv (FIFREEZE)
1122 const_iv (FITHAW)
1123 const_iv (FITRIM)
1124 const_iv (FICLONE)
1125 const_iv (FICLONERANGE)
1126 const_iv (FIDEDUPERANGE)
1127
1128 const_iv (FS_IOC_GETFLAGS)
1129 const_iv (FS_IOC_SETFLAGS)
1130 const_iv (FS_IOC_GETVERSION)
1131 const_iv (FS_IOC_SETVERSION)
1132 const_iv (FS_IOC_FIEMAP)
1133 const_iv (FS_IOC_FSGETXATTR)
1134 const_iv (FS_IOC_FSSETXATTR)
1135 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1136 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1137 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1138
1139 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1140
1141 const_iv (FS_SECRM_FL)
1142 const_iv (FS_UNRM_FL)
1143 const_iv (FS_COMPR_FL)
1144 const_iv (FS_SYNC_FL)
1145 const_iv (FS_IMMUTABLE_FL)
1146 const_iv (FS_APPEND_FL)
1147 const_iv (FS_NODUMP_FL)
1148 const_iv (FS_NOATIME_FL)
1149 const_iv (FS_DIRTY_FL)
1150 const_iv (FS_COMPRBLK_FL)
1151 const_iv (FS_NOCOMP_FL)
1152 const_iv (FS_ENCRYPT_FL)
1153 const_iv (FS_BTREE_FL)
1154 const_iv (FS_INDEX_FL)
1155 const_iv (FS_JOURNAL_DATA_FL)
1156 const_iv (FS_NOTAIL_FL)
1157 const_iv (FS_DIRSYNC_FL)
1158 const_iv (FS_TOPDIR_FL)
1159 const_iv (FS_FL_USER_MODIFIABLE)
1160
1161 const_iv (FS_XFLAG_REALTIME)
1162 const_iv (FS_XFLAG_PREALLOC)
1163 const_iv (FS_XFLAG_IMMUTABLE)
1164 const_iv (FS_XFLAG_APPEND)
1165 const_iv (FS_XFLAG_SYNC)
1166 const_iv (FS_XFLAG_NOATIME)
1167 const_iv (FS_XFLAG_NODUMP)
1168 const_iv (FS_XFLAG_RTINHERIT)
1169 const_iv (FS_XFLAG_PROJINHERIT)
1170 const_iv (FS_XFLAG_NOSYMLINKS)
1171 const_iv (FS_XFLAG_EXTSIZE)
1172 const_iv (FS_XFLAG_EXTSZINHERIT)
1173 const_iv (FS_XFLAG_NODEFRAG)
1174 const_iv (FS_XFLAG_FILESTREAM)
1175 const_iv (FS_XFLAG_DAX)
1176 const_iv (FS_XFLAG_HASATTR)
1177
1178 const_iv (FIEMAP_FLAG_SYNC)
1179 const_iv (FIEMAP_FLAG_XATTR)
1180 const_iv (FIEMAP_FLAGS_COMPAT)
1181 const_iv (FIEMAP_EXTENT_LAST)
1182 const_iv (FIEMAP_EXTENT_UNKNOWN)
1183 const_iv (FIEMAP_EXTENT_DELALLOC)
1184 const_iv (FIEMAP_EXTENT_ENCODED)
1185 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1186 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1187 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1188 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1189 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1190 const_iv (FIEMAP_EXTENT_MERGED)
1191 const_iv (FIEMAP_EXTENT_SHARED)
1192
1193 const_iv (SPLICE_F_MOVE)
1194 const_iv (SPLICE_F_NONBLOCK)
1195 const_iv (SPLICE_F_MORE)
1196 const_iv (SPLICE_F_GIFT)
1197
1198 const_iv (EFD_CLOEXEC)
1199 const_iv (EFD_NONBLOCK)
1200 const_iv (EFD_SEMAPHORE)
1201
1202 const_iv (CLOCK_REALTIME)
1203 const_iv (CLOCK_MONOTONIC)
1204 const_iv (CLOCK_BOOTTIME)
1205 const_iv (CLOCK_REALTIME_ALARM)
1206 const_iv (CLOCK_BOOTTIME_ALARM)
1207
1208 const_iv (TFD_NONBLOCK)
1209 const_iv (TFD_CLOEXEC)
1210
1211 const_iv (TFD_TIMER_ABSTIME)
1212 const_iv (TFD_TIMER_CANCEL_ON_SET)
1213
1214 /* these are libeio constants, and are independent of gendef0 */
1215 const_eio (SEEK_SET)
1216 const_eio (SEEK_CUR)
1217 const_eio (SEEK_END)
1218
1219 const_eio (MCL_FUTURE)
1220 const_eio (MCL_CURRENT)
1221
1222 const_eio (MS_ASYNC)
1223 const_eio (MS_INVALIDATE)
1224 const_eio (MS_SYNC)
1225
1226 const_eio (MT_MODIFY)
1227
1228 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1229 const_eio (SYNC_FILE_RANGE_WRITE)
1230 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1231
1232 const_eio (FALLOC_FL_KEEP_SIZE)
1233 const_eio (FALLOC_FL_PUNCH_HOLE)
1234 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1235 const_eio (FALLOC_FL_ZERO_RANGE)
1236 const_eio (FALLOC_FL_INSERT_RANGE)
1237 const_eio (FALLOC_FL_UNSHARE_RANGE)
1238
1239 const_eio (RENAME_NOREPLACE)
1240 const_eio (RENAME_EXCHANGE)
1241 const_eio (RENAME_WHITEOUT)
1242
1243 const_eio (READDIR_DENTS)
1244 const_eio (READDIR_DIRS_FIRST)
1245 const_eio (READDIR_STAT_ORDER)
1246 const_eio (READDIR_FOUND_UNKNOWN)
1247
1248 const_eio (DT_UNKNOWN)
1249 const_eio (DT_FIFO)
1250 const_eio (DT_CHR)
1251 const_eio (DT_DIR)
1252 const_eio (DT_BLK)
1253 const_eio (DT_REG)
1254 const_eio (DT_LNK)
1255 const_eio (DT_SOCK)
1256 const_eio (DT_WHT)
1257 };
1258
1259 aio_stash = gv_stashpv ("IO::AIO" , 1);
1260 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1261 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1262 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1263
1264 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1265 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1266
1267 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1268
1269 reinit ();
1270}
1271
341void 1272void
342min_parallel(nthreads) 1273reinit ()
343 int nthreads 1274 PROTOTYPE:
1275
1276void
1277max_poll_reqs (unsigned int nreqs)
344 PROTOTYPE: $ 1278 PROTOTYPE: $
345 CODE: 1279 CODE:
346 while (nthreads > started) 1280 eio_set_max_poll_reqs (nreqs);
347 start_thread ();
348 1281
349void 1282void
350max_parallel(nthreads) 1283max_poll_time (double nseconds)
351 int nthreads
352 PROTOTYPE: $ 1284 PROTOTYPE: $
353 CODE: 1285 CODE:
1286 eio_set_max_poll_time (nseconds);
1287
1288void
1289min_parallel (unsigned int nthreads)
1290 PROTOTYPE: $
1291 CODE:
1292 eio_set_min_parallel (nthreads);
1293
1294void
1295max_parallel (unsigned int nthreads)
1296 PROTOTYPE: $
1297 CODE:
1298 eio_set_max_parallel (nthreads);
1299
1300void
1301max_idle (unsigned int nthreads)
1302 PROTOTYPE: $
1303 CODE:
1304 eio_set_max_idle (nthreads);
1305
1306void
1307idle_timeout (unsigned int seconds)
1308 PROTOTYPE: $
1309 CODE:
1310 eio_set_idle_timeout (seconds);
1311
1312void
1313max_outstanding (unsigned int maxreqs)
1314 PROTOTYPE: $
1315 CODE:
1316 max_outstanding = maxreqs;
1317
1318void
1319aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1320 PPCODE:
354{ 1321{
355 int cur = started; 1322 dREQ;
356 while (cur > nthreads) 1323
357 { 1324 req->type = EIO_WD_OPEN;
358 end_thread (); 1325 req_set_path1 (req, pathname);
1326
1327 REQ_SEND;
1328}
1329
1330void
1331aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1332 PPCODE:
1333{
1334 dREQ;
1335
1336 req->type = EIO_OPEN;
1337 req_set_path1 (req, pathname);
1338 req->int1 = flags;
1339 req->int2 = mode;
1340
1341 REQ_SEND;
1342}
1343
1344void
1345aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1346 ALIAS:
1347 aio_fsync = EIO_FSYNC
1348 aio_fdatasync = EIO_FDATASYNC
1349 aio_syncfs = EIO_SYNCFS
1350 PPCODE:
1351{
1352 int fd = s_fileno_croak (fh, 0);
1353 dREQ;
1354
1355 req->type = ix;
1356 req->sv1 = newSVsv (fh);
1357 req->int1 = fd;
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1364 PPCODE:
1365{
1366 int fd = s_fileno_croak (fh, 0);
1367 dREQ;
1368
1369 req->type = EIO_SYNC_FILE_RANGE;
1370 req->sv1 = newSVsv (fh);
1371 req->int1 = fd;
1372 req->offs = offset;
1373 req->size = nbytes;
1374 req->int2 = flags;
1375
1376 REQ_SEND;
1377}
1378
1379void
1380aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1381 PPCODE:
1382{
1383 int fd = s_fileno_croak (fh, 0);
1384 dREQ;
1385
1386 req->type = EIO_FALLOCATE;
1387 req->sv1 = newSVsv (fh);
1388 req->int1 = fd;
1389 req->int2 = mode;
1390 req->offs = offset;
1391 req->size = len;
1392
1393 REQ_SEND;
1394}
1395
1396void
1397aio_close (SV *fh, SV *callback = &PL_sv_undef)
1398 PPCODE:
1399{
1400 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1401 int fd = s_fileno_croak (fh, 0);
1402 dREQ;
1403
1404 if (expect_false (close_fd < 0))
1405 {
1406 int pipefd [2];
1407
1408 if (
1409#ifdef _WIN32
1410 _pipe (pipefd, 1, _O_BINARY) < 0
1411#else
1412 pipe (pipefd) < 0
1413 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1414#endif
1415 || close (pipefd [1]) < 0
359 cur--; 1416 )
1417 abort (); /*D*/
1418
1419 close_fd = pipefd [0];
360 } 1420 }
361 1421
362 while (started > nthreads) 1422 req->type = EIO_DUP2;
1423 req->int1 = close_fd;
1424 req->sv2 = newSVsv (fh);
1425 req->int2 = fd;
1426
1427 REQ_SEND;
1428}
1429
1430void
1431aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1432 PPCODE:
1433{
1434 int fd = s_fileno_croak (fh, 0);
1435 dREQ;
1436
1437 req->type = EIO_SEEK;
1438 req->sv1 = newSVsv (fh);
1439 req->int1 = fd;
1440 req->offs = SvVAL64 (offset);
1441 req->int2 = whence;
1442
1443 REQ_SEND;
1444}
1445
1446void
1447aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1448 ALIAS:
1449 aio_read = EIO_READ
1450 aio_write = EIO_WRITE
1451 PPCODE:
1452{
1453 STRLEN svlen;
1454 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1455 char *svptr = SvPVbyte (data, svlen);
1456 UV len = SvUV (length);
1457
1458 if (dataoffset < 0)
1459 dataoffset += svlen;
1460
1461 if (dataoffset < 0 || dataoffset > svlen)
1462 croak ("dataoffset outside of data scalar");
1463
1464 if (ix == EIO_WRITE)
1465 {
1466 /* write: check length and adjust. */
1467 if (!SvOK (length) || len + dataoffset > svlen)
1468 len = svlen - dataoffset;
1469 }
1470 else
1471 {
1472 /* read: check type and grow scalar as necessary */
1473 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1474 svptr = sv_grow (data, len + dataoffset + 1);
1475 else if (SvCUR (data) < len + dataoffset)
1476 croak ("length + dataoffset outside of scalar, and cannot grow");
1477 }
1478
1479 {
1480 dREQ;
1481
1482 req->type = ix;
1483 req->sv1 = newSVsv (fh);
1484 req->int1 = fd;
1485 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1486 req->size = len;
1487 req->sv2 = SvREFCNT_inc (data);
1488 req->ptr2 = (char *)svptr + dataoffset;
1489 req->stroffset = dataoffset;
1490
1491 if (!SvREADONLY (data))
1492 {
1493 SvREADONLY_on (data);
1494 req->flags |= FLAG_SV2_RO_OFF;
1495 }
1496
1497 REQ_SEND;
1498 }
1499}
1500
1501void
1502aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1503 ALIAS:
1504 aio_ioctl = EIO_IOCTL
1505 aio_fcntl = EIO_FCNTL
1506 PPCODE:
1507{
1508 int fd = s_fileno_croak (fh, 0);
1509 char *svptr;
1510
1511 if (SvPOK (arg) || !SvNIOK (arg))
1512 {
1513 STRLEN svlen;
1514 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1515#ifdef IOCPARM_LEN
1516 STRLEN need = IOCPARM_LEN (request);
1517#else
1518 STRLEN need = 256;
1519#endif
1520
1521 if (svlen < need)
1522 svptr = SvGROW (arg, need);
1523 }
1524 else
1525 svptr = (char *)SvIV (arg);
1526
1527 {
1528 dREQ;
1529
1530 req->type = ix;
1531 req->sv1 = newSVsv (fh);
1532 req->int1 = fd;
1533 req->int2 = (long)request;
1534 req->sv2 = SvREFCNT_inc (arg);
1535 req->ptr2 = svptr;
1536
1537 REQ_SEND;
1538 }
1539}
1540
1541void
1542aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1543 ALIAS:
1544 aio_readlink = EIO_READLINK
1545 aio_realpath = EIO_REALPATH
1546 PPCODE:
1547{
1548 dREQ;
1549
1550 req->type = ix;
1551 req_set_path1 (req, pathname);
1552
1553 REQ_SEND;
1554}
1555
1556void
1557aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1558 PPCODE:
1559{
1560 int ifd = s_fileno_croak (in_fh , 0);
1561 int ofd = s_fileno_croak (out_fh, 1);
1562 dREQ;
1563
1564 req->type = EIO_SENDFILE;
1565 req->sv1 = newSVsv (out_fh);
1566 req->int1 = ofd;
1567 req->sv2 = newSVsv (in_fh);
1568 req->int2 = ifd;
1569 req->offs = in_offset;
1570 req->size = length;
1571
1572 REQ_SEND;
1573}
1574
1575void
1576aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1577 PPCODE:
1578{
1579 int fd = s_fileno_croak (fh, 0);
1580 dREQ;
1581
1582 req->type = EIO_READAHEAD;
1583 req->sv1 = newSVsv (fh);
1584 req->int1 = fd;
1585 req->offs = offset;
1586 req->size = length;
1587
1588 REQ_SEND;
1589}
1590
1591void
1592aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1593 ALIAS:
1594 aio_stat = EIO_STAT
1595 aio_lstat = EIO_LSTAT
1596 aio_statvfs = EIO_STATVFS
1597 PPCODE:
1598{
1599 dREQ;
1600
1601 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1602
1603 REQ_SEND;
1604}
1605
1606UV
1607major (UV dev)
1608 ALIAS:
1609 minor = 1
1610 CODE:
1611 RETVAL = ix ? minor (dev) : major (dev);
1612 OUTPUT:
1613 RETVAL
1614
1615UV
1616makedev (UV maj, UV min)
1617 CODE:
1618 RETVAL = makedev (maj, min);
1619 OUTPUT:
1620 RETVAL
1621
1622void
1623aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1624 PPCODE:
1625{
1626 dREQ;
1627
1628 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1629 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1630 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1631
1632 REQ_SEND;
1633}
1634
1635void
1636aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1637 PPCODE:
1638{
1639 dREQ;
1640
1641 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1642 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1649 PPCODE:
1650{
1651 dREQ;
1652
1653 req->int2 = mode;
1654 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1655
1656 REQ_SEND;
1657}
1658
1659void
1660aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1661 PPCODE:
1662{
1663 dREQ;
1664
1665 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1666 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1667 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1668
1669 REQ_SEND;
1670}
1671
1672void
1673aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1674 PPCODE:
1675{
1676 dREQ;
1677
1678 req->type = EIO_READDIR;
1679 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1680
1681 if (flags & EIO_READDIR_DENTS)
1682 req->int1 |= EIO_READDIR_CUSTOM2;
1683
1684 req_set_path1 (req, pathname);
1685
1686 REQ_SEND;
1687}
1688
1689void
1690aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1691 PPCODE:
1692{
1693 dREQ;
1694
1695 req->type = EIO_MKDIR;
1696 req->int2 = mode;
1697 req_set_path1 (req, pathname);
1698
1699 REQ_SEND;
1700}
1701
1702void
1703aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1704 ALIAS:
1705 aio_unlink = EIO_UNLINK
1706 aio_rmdir = EIO_RMDIR
1707 aio_readdir = EIO_READDIR
1708 PPCODE:
1709{
1710 dREQ;
1711
1712 req->type = ix;
1713 req_set_path1 (req, pathname);
1714
1715 REQ_SEND;
1716}
1717
1718void
1719aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1720 ALIAS:
1721 aio_link = EIO_LINK
1722 aio_symlink = EIO_SYMLINK
1723 aio_rename = EIO_RENAME
1724 PPCODE:
1725{
1726 eio_wd wd2 = 0;
1727 dREQ;
1728
1729 req->type = ix;
1730 req_set_path1 (req, oldpath);
1731 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1732 req->int3 = (long)wd2;
1733
1734 REQ_SEND;
1735}
1736
1737void
1738aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1739 PPCODE:
1740{
1741 eio_wd wd2 = 0;
1742 dREQ;
1743
1744 req->type = EIO_RENAME;
1745 req_set_path1 (req, oldpath);
1746 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1747 req->int2 = flags;
1748 req->int3 = (long)wd2;
1749
1750 REQ_SEND;
1751}
1752
1753void
1754aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1755 PPCODE:
1756{
1757 dREQ;
1758
1759 req->type = EIO_MKNOD;
1760 req->int2 = (mode_t)mode;
1761 req->offs = dev;
1762 req_set_path1 (req, pathname);
1763
1764 REQ_SEND;
1765}
1766
1767void
1768aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1769 ALIAS:
1770 aio_mtouch = EIO_MTOUCH
1771 aio_msync = EIO_MSYNC
1772 PPCODE:
1773{
1774 STRLEN svlen;
1775 char *svptr = SvPVbyte (data, svlen);
1776 UV len = SvUV (length);
1777
1778 if (flags < 0)
1779 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1780
1781 if (offset < 0)
1782 offset += svlen;
1783
1784 if (offset < 0 || offset > svlen)
1785 croak ("offset outside of scalar");
1786
1787 if (!SvOK (length) || len + offset > svlen)
1788 len = svlen - offset;
1789
1790 {
1791 dREQ;
1792
1793 req->type = ix;
1794 req->sv2 = SvREFCNT_inc (data);
1795 req->ptr2 = (char *)svptr + offset;
1796 req->size = len;
1797 req->int1 = flags;
1798
1799 REQ_SEND;
1800 }
1801}
1802
1803void
1804aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1805 PPCODE:
1806{
1807 STRLEN svlen;
1808 char *svptr = SvPVbyte (data, svlen);
1809 UV len = SvUV (length);
1810
1811 if (offset < 0)
1812 offset += svlen;
1813
1814 if (offset < 0 || offset > svlen)
1815 croak ("offset outside of scalar");
1816
1817 if (!SvOK (length) || len + offset > svlen)
1818 len = svlen - offset;
1819
1820 {
1821 dREQ;
1822
1823 req->type = EIO_MLOCK;
1824 req->sv2 = SvREFCNT_inc (data);
1825 req->ptr2 = (char *)svptr + offset;
1826 req->size = len;
1827
1828 REQ_SEND;
1829 }
1830}
1831
1832void
1833aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1834 PPCODE:
1835{
1836 dREQ;
1837
1838 req->type = EIO_MLOCKALL;
1839 req->int1 = flags;
1840
1841 REQ_SEND;
1842}
1843
1844void
1845aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1846 PPCODE:
1847{
1848 int fd = s_fileno_croak (fh, 0);
1849 dREQ;
1850
1851 req->type = EIO_CUSTOM;
1852 req->sv1 = newSVsv (fh);
1853 req->int1 = fd;
1854
1855 req->feed = fiemap;
1856#if HAVE_FIEMAP
1857 /* keep our fingers crossed that the next two types are 64 bit */
1858 req->offs = start;
1859 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1860 req->int2 = flags;
1861 req->int3 = SvOK (count) ? SvIV (count) : -1;
1862#endif
1863
1864 REQ_SEND;
1865}
1866
1867void
1868aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1869 PPCODE:
1870{
1871 char *svptr = 0;
1872
1873 sv_clear_foreign (data);
1874
1875 if (length) /* known length, directly read into scalar */
1876 {
1877 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1878 svptr = sv_grow (data, length + 1);
1879 else if (SvCUR (data) < length)
1880 croak ("length outside of scalar, and cannot grow");
1881 else
1882 svptr = SvPVbyte_nolen (data);
1883 }
1884
1885 {
1886 dREQ;
1887
1888 req->type = EIO_SLURP;
1889 req_set_path1 (req, pathname);
1890 req->offs = offset;
1891 req->size = length;
1892 req->sv2 = SvREFCNT_inc (data);
1893 req->ptr2 = svptr;
1894
1895 if (!SvREADONLY (data))
1896 {
1897 SvREADONLY_on (data);
1898 req->flags |= FLAG_SV2_RO_OFF;
1899 }
1900
1901 REQ_SEND;
1902 }
1903}
1904
1905void
1906aio_busy (double delay, SV *callback = &PL_sv_undef)
1907 PPCODE:
1908{
1909 dREQ;
1910
1911 req->type = EIO_BUSY;
1912 req->nv1 = delay < 0. ? 0. : delay;
1913
1914 REQ_SEND;
1915}
1916
1917void
1918aio_group (SV *callback = &PL_sv_undef)
1919 PPCODE:
1920{
1921 dREQ;
1922
1923 req->type = EIO_GROUP;
1924
1925 PUTBACK;
1926 req_submit (req);
1927 SPAGAIN;
1928
1929 XPUSHs (req_sv (req, aio_grp_stash));
1930}
1931
1932void
1933aio_nop (SV *callback = &PL_sv_undef)
1934 ALIAS:
1935 aio_nop = EIO_NOP
1936 aio_sync = EIO_SYNC
1937 PPCODE:
1938{
1939 dREQ;
1940
1941 req->type = ix;
1942
1943 REQ_SEND;
1944}
1945
1946int
1947aioreq_pri (int pri = NO_INIT)
1948 CODE:
1949 RETVAL = next_pri;
1950 if (items > 0)
1951 {
1952 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1953 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1954 next_pri = pri;
1955 }
1956 OUTPUT:
1957 RETVAL
1958
1959void
1960aioreq_nice (int nice = 0)
1961 CODE:
1962 nice = next_pri - nice;
1963 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1964 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1965 next_pri = nice;
1966
1967void
1968flush ()
1969 CODE:
1970 while (eio_nreqs ())
363 { 1971 {
364 poll_wait (); 1972 poll_wait ();
365 poll_cb (); 1973 poll_cb ();
366 } 1974 }
367}
368 1975
369int 1976int
370max_outstanding(nreqs) 1977poll ()
371 int nreqs
372 PROTOTYPE: $
373 CODE:
374 RETVAL = max_outstanding;
375 max_outstanding = nreqs;
376
377void
378aio_open(pathname,flags,mode,callback=&PL_sv_undef)
379 SV * pathname
380 int flags
381 int mode
382 SV * callback
383 PROTOTYPE: $$$;$
384 CODE: 1978 CODE:
385{
386 aio_req req;
387
388 Newz (0, req, 1, aio_cb);
389
390 if (!req)
391 croak ("out of memory during aio_req allocation");
392
393 req->type = REQ_OPEN;
394 req->data = newSVsv (pathname);
395 req->dataptr = SvPV_nolen (req->data);
396 req->fd = flags;
397 req->mode = mode;
398 req->callback = SvREFCNT_inc (callback);
399
400 send_req (req);
401}
402
403void
404aio_close(fh,callback=&PL_sv_undef)
405 SV * fh
406 SV * callback
407 PROTOTYPE: $;$
408 ALIAS:
409 aio_close = REQ_CLOSE
410 aio_fsync = REQ_FSYNC
411 aio_fdatasync = REQ_FDATASYNC
412 CODE:
413{
414 aio_req req;
415
416 Newz (0, req, 1, aio_cb);
417
418 if (!req)
419 croak ("out of memory during aio_req allocation");
420
421 req->type = ix;
422 req->fh = newSVsv (fh);
423 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424 req->callback = SvREFCNT_inc (callback);
425
426 send_req (req);
427}
428
429void
430aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
431 SV * fh
432 UV offset
433 IV length
434 SV * data
435 IV dataoffset
436 SV * callback
437 ALIAS:
438 aio_read = REQ_READ
439 aio_write = REQ_WRITE
440 PROTOTYPE: $$$$$;$
441 CODE:
442{
443 aio_req req;
444 STRLEN svlen;
445 char *svptr = SvPV (data, svlen);
446
447 SvUPGRADE (data, SVt_PV);
448 SvPOK_on (data);
449
450 if (dataoffset < 0)
451 dataoffset += svlen;
452
453 if (dataoffset < 0 || dataoffset > svlen)
454 croak ("data offset outside of string");
455
456 if (ix == REQ_WRITE)
457 {
458 /* write: check length and adjust. */
459 if (length < 0 || length + dataoffset > svlen)
460 length = svlen - dataoffset;
461 }
462 else
463 {
464 /* read: grow scalar as necessary */
465 svptr = SvGROW (data, length + dataoffset);
466 }
467
468 if (length < 0)
469 croak ("length must not be negative");
470
471 Newz (0, req, 1, aio_cb);
472
473 if (!req)
474 croak ("out of memory during aio_req allocation");
475
476 req->type = ix;
477 req->fh = newSVsv (fh);
478 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
479 : IoOFP (sv_2io (fh)));
480 req->offset = offset;
481 req->length = length;
482 req->data = SvREFCNT_inc (data);
483 req->dataptr = (char *)svptr + dataoffset;
484 req->callback = SvREFCNT_inc (callback);
485
486 send_req (req);
487}
488
489void
490aio_readahead(fh,offset,length,callback=&PL_sv_undef)
491 SV * fh
492 UV offset
493 IV length
494 SV * callback
495 PROTOTYPE: $$$;$
496 CODE:
497{
498 aio_req req;
499
500 if (length < 0)
501 croak ("length must not be negative");
502
503 Newz (0, req, 1, aio_cb);
504
505 if (!req)
506 croak ("out of memory during aio_req allocation");
507
508 req->type = REQ_READAHEAD;
509 req->fh = newSVsv (fh);
510 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
511 req->offset = offset;
512 req->length = length;
513 req->callback = SvREFCNT_inc (callback);
514
515 send_req (req);
516}
517
518void
519aio_stat(fh_or_path,callback=&PL_sv_undef)
520 SV * fh_or_path
521 SV * callback
522 ALIAS:
523 aio_stat = REQ_STAT
524 aio_lstat = REQ_LSTAT
525 CODE:
526{
527 aio_req req;
528
529 Newz (0, req, 1, aio_cb);
530
531 if (!req)
532 croak ("out of memory during aio_req allocation");
533
534 New (0, req->statdata, 1, Stat_t);
535
536 if (!req->statdata)
537 croak ("out of memory during aio_req->statdata allocation");
538
539 if (SvPOK (fh_or_path))
540 {
541 req->type = ix;
542 req->data = newSVsv (fh_or_path);
543 req->dataptr = SvPV_nolen (req->data);
544 }
545 else
546 {
547 req->type = REQ_FSTAT;
548 req->fh = newSVsv (fh_or_path);
549 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
550 }
551
552 req->callback = SvREFCNT_inc (callback);
553
554 send_req (req);
555}
556
557void
558aio_unlink(pathname,callback=&PL_sv_undef)
559 SV * pathname
560 SV * callback
561 CODE:
562{
563 aio_req req;
564
565 Newz (0, req, 1, aio_cb);
566
567 if (!req)
568 croak ("out of memory during aio_req allocation");
569
570 req->type = REQ_UNLINK;
571 req->data = newSVsv (pathname);
572 req->dataptr = SvPV_nolen (req->data);
573 req->callback = SvREFCNT_inc (callback);
574
575 send_req (req);
576}
577
578void
579flush()
580 PROTOTYPE:
581 CODE:
582 while (nreqs)
583 {
584 poll_wait (); 1979 poll_wait ();
585 poll_cb (); 1980 RETVAL = poll_cb ();
586 }
587
588void
589poll()
590 PROTOTYPE:
591 CODE:
592 if (nreqs)
593 {
594 poll_wait ();
595 poll_cb ();
596 }
597
598int
599poll_fileno()
600 PROTOTYPE:
601 CODE:
602 RETVAL = respipe [0];
603 OUTPUT: 1981 OUTPUT:
604 RETVAL 1982 RETVAL
605 1983
606int 1984int
1985poll_fileno ()
1986 CODE:
1987 RETVAL = s_epipe_fd (&respipe);
1988 OUTPUT:
1989 RETVAL
1990
1991int
607poll_cb(...) 1992poll_cb (...)
608 PROTOTYPE: 1993 PROTOTYPE:
609 CODE: 1994 CODE:
610 RETVAL = poll_cb (); 1995 RETVAL = poll_cb ();
611 OUTPUT: 1996 OUTPUT:
612 RETVAL 1997 RETVAL
613 1998
614void 1999void
615poll_wait() 2000poll_wait ()
616 PROTOTYPE:
617 CODE: 2001 CODE:
618 if (nreqs)
619 poll_wait (); 2002 poll_wait ();
620 2003
621int 2004int
622nreqs() 2005nreqs ()
623 PROTOTYPE:
624 CODE: 2006 CODE:
625 RETVAL = nreqs; 2007 RETVAL = eio_nreqs ();
626 OUTPUT: 2008 OUTPUT:
627 RETVAL 2009 RETVAL
628 2010
2011int
2012nready ()
2013 CODE:
2014 RETVAL = eio_nready ();
2015 OUTPUT:
2016 RETVAL
2017
2018int
2019npending ()
2020 CODE:
2021 RETVAL = eio_npending ();
2022 OUTPUT:
2023 RETVAL
2024
2025int
2026nthreads ()
2027 CODE:
2028 RETVAL = eio_nthreads ();
2029 OUTPUT:
2030 RETVAL
2031
2032int
2033fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2034 CODE:
2035 RETVAL = posix_fadvise (fh, offset, length, advice);
2036 OUTPUT:
2037 RETVAL
2038
2039IV
2040sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2041 CODE:
2042 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2043 OUTPUT:
2044 RETVAL
2045
2046void
2047mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2048 PPCODE:
2049 sv_clear_foreign (scalar);
2050{
2051 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2052 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2053 if (addr == (void *)-1)
2054 XSRETURN_NO;
2055
2056 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2057
2058 if (!(prot & PROT_WRITE))
2059 SvREADONLY_on (scalar);
2060
2061 XSRETURN_YES;
2062}
2063
2064void
2065munmap (SV *scalar)
2066 CODE:
2067 sv_clear_foreign (scalar);
2068
2069SV *
2070mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
2071 CODE:
2072{
2073 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2074 void *new;
2075
2076 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2077 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2078
2079 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2080
2081 RETVAL = &PL_sv_no;
2082
2083 if (new != (void *)-1)
2084 {
2085 RETVAL = new == (void *)mg->mg_ptr
2086 ? newSVpvn ("0 but true", 10)
2087 : &PL_sv_yes;
2088
2089 mg->mg_ptr = (char *)new;
2090 mg->mg_obj = (SV *)new_length;
2091
2092 SvPVX (scalar) = mg->mg_ptr;
2093 SvCUR_set (scalar, new_length);
2094 }
2095}
2096 OUTPUT:
2097 RETVAL
2098
2099int
2100madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2101 ALIAS:
2102 mprotect = 1
2103 CODE:
2104{
2105 STRLEN svlen;
2106 void *addr = SvPVbyte (scalar, svlen);
2107 STRLEN len = SvUV (length);
2108
2109 if (offset < 0)
2110 offset += svlen;
2111
2112 if (offset < 0 || offset > svlen)
2113 croak ("offset outside of scalar");
2114
2115 if (!SvOK (length) || len + offset > svlen)
2116 len = svlen - offset;
2117
2118 addr = (void *)(((intptr_t)addr) + offset);
2119 eio_page_align (&addr, &len);
2120
2121 switch (ix)
2122 {
2123 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2124 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2125 }
2126}
2127 OUTPUT:
2128 RETVAL
2129
2130int
2131munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2132 CODE:
2133{
2134 STRLEN svlen;
2135 void *addr = SvPVbyte (scalar, svlen);
2136 size_t len = SvUV (length);
2137
2138 if (offset < 0)
2139 offset += svlen;
2140
2141 if (offset < 0 || offset > svlen)
2142 croak ("offset outside of scalar");
2143
2144 if (!SvOK (length) || len + offset > svlen)
2145 len = svlen - offset;
2146
2147 addr = (void *)(((intptr_t)addr) + offset);
2148 eio_page_align (&addr, &len);
2149#if _POSIX_MEMLOCK_RANGE
2150 RETVAL = munlock (addr, len);
2151#else
2152 RETVAL = EIO_ENOSYS ();
2153#endif
2154}
2155 OUTPUT:
2156 RETVAL
2157
2158int
2159munlockall ()
2160 CODE:
2161#if _POSIX_MEMLOCK
2162 munlockall ();
2163#else
2164 RETVAL = EIO_ENOSYS ();
2165#endif
2166 OUTPUT:
2167 RETVAL
2168
2169int
2170splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2171 CODE:
2172{
2173#if HAVE_LINUX_SPLICE
2174 loff_t off_in_, off_out_;
2175 RETVAL = splice (
2176 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2177 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2178 length, flags
2179 );
2180#else
2181 RETVAL = EIO_ENOSYS ();
2182#endif
2183}
2184 OUTPUT:
2185 RETVAL
2186
2187int
2188tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2189 CODE:
2190#if HAVE_LINUX_SPLICE
2191 RETVAL = tee (rfh, wfh, length, flags);
2192#else
2193 RETVAL = EIO_ENOSYS ();
2194#endif
2195 OUTPUT:
2196 RETVAL
2197
2198int
2199pipesize (aio_rfd rfh, int new_size = -1)
2200 PROTOTYPE: $;$
2201 CODE:
2202#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2203 if (new_size >= 0)
2204 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2205 else
2206 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2207#else
2208 errno = ENOSYS;
2209 RETVAL = -1;
2210#endif
2211 OUTPUT:
2212 RETVAL
2213
2214void
2215pipe2 (int flags = 0)
2216 PROTOTYPE: ;$
2217 PPCODE:
2218{
2219 int fd[2];
2220 int res;
2221
2222 if (flags)
2223#if HAVE_PIPE2
2224 res = pipe2 (fd, flags);
2225#else
2226 res = (errno = ENOSYS, -1);
2227#endif
2228 else
2229 res = pipe (fd);
2230
2231 if (!res)
2232 {
2233 EXTEND (SP, 2);
2234 PUSHs (newmortalFH (fd[0], O_RDONLY));
2235 PUSHs (newmortalFH (fd[1], O_WRONLY));
2236 }
2237}
2238
2239void
2240eventfd (unsigned int initval = 0, int flags = 0)
2241 PPCODE:
2242{
2243 int fd;
2244#if HAVE_EVENTFD
2245 fd = eventfd (initval, flags);
2246#else
2247 fd = (errno = ENOSYS, -1);
2248#endif
2249
2250 XPUSHs (newmortalFH (fd, O_RDWR));
2251}
2252
2253void
2254timerfd_create (int clockid, int flags = 0)
2255 PPCODE:
2256{
2257 int fd;
2258#if HAVE_TIMERFD
2259 fd = timerfd_create (clockid, flags);
2260#else
2261 fd = (errno = ENOSYS, -1);
2262#endif
2263
2264 XPUSHs (newmortalFH (fd, O_RDWR));
2265}
2266
2267void
2268timerfd_settime (SV *fh, int flags, NV interval, NV value)
2269 PPCODE:
2270{
2271 int fd = s_fileno_croak (fh, 0);
2272#if HAVE_TIMERFD
2273 int res;
2274 struct itimerspec its, ots;
2275
2276 ts_set (&its.it_interval, interval);
2277 ts_set (&its.it_value , value);
2278 res = timerfd_settime (fd, flags, &its, &ots);
2279
2280 if (!res)
2281 {
2282 EXTEND (SP, 2);
2283 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2284 PUSHs (newSVnv (ts_get (&ots.it_value)));
2285 }
2286#else
2287 errno = ENOSYS;
2288#endif
2289}
2290
2291void
2292timerfd_gettime (SV *fh)
2293 PPCODE:
2294{
2295 int fd = s_fileno_croak (fh, 0);
2296#if HAVE_TIMERFD
2297 int res;
2298 struct itimerspec ots;
2299 res = timerfd_gettime (fd, &ots);
2300
2301 if (!res)
2302 {
2303 EXTEND (SP, 2);
2304 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2305 PUSHs (newSVnv (ts_get (&ots.it_value)));
2306 }
2307#else
2308 errno = ENOSYS;
2309#endif
2310}
2311
2312UV
2313get_fdlimit ()
2314 CODE:
2315#if HAVE_RLIMITS
2316 struct rlimit rl;
2317 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2318 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2319#endif
2320 XSRETURN_UNDEF;
2321 OUTPUT:
2322 RETVAL
2323
2324void
2325min_fdlimit (UV limit = 0x7fffffffU)
2326 CODE:
2327{
2328#if HAVE_RLIMITS
2329 struct rlimit rl;
2330 rlim_t orig_rlim_max;
2331 UV bit;
2332
2333 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2334 goto fail;
2335
2336 if (rl.rlim_cur == RLIM_INFINITY)
2337 XSRETURN_YES;
2338
2339 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2340
2341 if (rl.rlim_cur < limit)
2342 {
2343 rl.rlim_cur = limit;
2344
2345 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2346 rl.rlim_max = rl.rlim_cur;
2347 }
2348
2349 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2350 XSRETURN_YES;
2351
2352 if (errno == EPERM)
2353 {
2354 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2355 /* our limit overflows a system-wide limit */
2356 /* try an adaptive algorithm, but do not lower the hardlimit */
2357 rl.rlim_max = 0;
2358 for (bit = 0x40000000U; bit; bit >>= 1)
2359 {
2360 rl.rlim_max |= bit;
2361 rl.rlim_cur = rl.rlim_max;
2362
2363 /* nevr decrease the hard limit */
2364 if (rl.rlim_max < orig_rlim_max)
2365 break;
2366
2367 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2368 rl.rlim_max &= ~bit; /* too high, remove bit again */
2369 }
2370
2371 /* now, raise the soft limit to the max permitted */
2372 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2373 {
2374 rl.rlim_cur = rl.rlim_max;
2375 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2376 errno = EPERM;
2377 }
2378 }
2379#endif
2380 fail:
2381 XSRETURN_UNDEF;
2382}
2383
2384void _on_next_submit (SV *cb)
2385 CODE:
2386 SvREFCNT_dec (on_next_submit);
2387 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2388
2389PROTOTYPES: DISABLE
2390
2391MODULE = IO::AIO PACKAGE = IO::AIO::WD
2392
2393BOOT:
2394{
2395 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2396 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2397}
2398
2399void
2400DESTROY (SV *self)
2401 CODE:
2402{
2403 aio_wd wd = SvAIO_WD (self);
2404#if HAVE_AT
2405 {
2406 SV *callback = &PL_sv_undef;
2407 dREQ; /* clobbers next_pri :/ */
2408 next_pri = req->pri; /* restore next_pri */
2409 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2410 req->type = EIO_WD_CLOSE;
2411 req->wd = wd;
2412 REQ_SEND;
2413 }
2414#else
2415 eio_wd_close_sync (wd);
2416#endif
2417}
2418
2419MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2420
2421void
2422cancel (aio_req_ornot req)
2423 CODE:
2424 eio_cancel (req);
2425
2426void
2427cb (aio_req_ornot req, SV *callback = NO_INIT)
2428 PPCODE:
2429{
2430 if (GIMME_V != G_VOID)
2431 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2432
2433 if (items > 1)
2434 {
2435 SV *cb_cv = get_cb (callback);
2436
2437 SvREFCNT_dec (req->callback);
2438 req->callback = SvREFCNT_inc (cb_cv);
2439 }
2440}
2441
2442MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2443
2444void
2445add (aio_req grp, ...)
2446 PPCODE:
2447{
2448 int i;
2449
2450 if (grp->int1 == 2)
2451 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2452
2453 for (i = 1; i < items; ++i )
2454 {
2455 aio_req req;
2456
2457 if (GIMME_V != G_VOID)
2458 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2459
2460 req = SvAIO_REQ (ST (i));
2461
2462 if (req)
2463 eio_grp_add (grp, req);
2464 }
2465}
2466
2467void
2468cancel_subs (aio_req_ornot req)
2469 CODE:
2470 req_cancel_subs (req);
2471
2472void
2473result (aio_req grp, ...)
2474 CODE:
2475{
2476 int i;
2477 AV *av;
2478
2479 grp->errorno = errno;
2480
2481 av = newAV ();
2482 av_extend (av, items - 1);
2483
2484 for (i = 1; i < items; ++i )
2485 av_push (av, newSVsv (ST (i)));
2486
2487 SvREFCNT_dec (grp->sv1);
2488 grp->sv1 = (SV *)av;
2489}
2490
2491void
2492errno (aio_req grp, int errorno = errno)
2493 CODE:
2494 grp->errorno = errorno;
2495
2496void
2497limit (aio_req grp, int limit)
2498 CODE:
2499 eio_grp_limit (grp, limit);
2500
2501void
2502feed (aio_req grp, SV *callback = &PL_sv_undef)
2503 CODE:
2504{
2505 SvREFCNT_dec (grp->sv2);
2506 grp->sv2 = newSVsv (callback);
2507 grp->feed = aio_grp_feed;
2508
2509 if (grp->int2 <= 0)
2510 grp->int2 = 2;
2511
2512 eio_grp_limit (grp, grp->int2);
2513}
2514

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