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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.265 by root, Tue Aug 14 11:50:43 2018 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux
5# define _GNU_SOURCE
6#endif
7
8#define _REENTRANT 1
9 2
10#include <errno.h> 3#include <errno.h>
11 4
12#include "EXTERN.h" 5#include "EXTERN.h"
13#include "perl.h" 6#include "perl.h"
14#include "XSUB.h" 7#include "XSUB.h"
15 8
16#include "autoconf/config.h" 9#if !defined mg_findext
17 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
18#include <pthread.h> 11#endif
19 12
20#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
21#include <errno.h> 15#include <errno.h>
22#include <sys/time.h>
23#include <sys/select.h>
24#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
25#include <sys/stat.h> 18#include <sys/stat.h>
26#include <limits.h> 19#include <limits.h>
27#include <unistd.h>
28#include <fcntl.h> 20#include <fcntl.h>
29#include <signal.h>
30#include <sched.h> 21#include <sched.h>
31 22
32#if HAVE_SENDFILE 23#if HAVE_SYS_MKDEV_H
33# if __linux
34# include <sys/sendfile.h>
35# elif __freebsd
36# include <sys/socket.h> 24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
26# include <sys/sysmacros.h>
27#endif
28
29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
37# include <sys/uio.h> 30# include <sys/mman.h>
38# elif __hpux 31#endif
32
33/* the incompetent fool that created musl keeps __linux__, refuses
34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89
90 #define EIO_STRUCT_STAT struct _stati64
91 #define EIO_STRUCT_STATI64
92
93#else
94
39# include <sys/socket.h> 95 #include <sys/time.h>
40# elif __solaris /* not yet */
41# include <sys/sendfile.h> 96 #include <sys/select.h>
97 #include <unistd.h>
98 #include <utime.h>
99 #include <signal.h>
100
101 #define EIO_STRUCT_STAT Stat_t
102
103#endif
104
105/*****************************************************************************/
106
107#if __GNUC__ >= 3
108# define expect(expr,value) __builtin_expect ((expr),(value))
109#else
110# define expect(expr,value) (expr)
111#endif
112
113#define expect_false(expr) expect ((expr) != 0, 0)
114#define expect_true(expr) expect ((expr) != 0, 1)
115
116/*****************************************************************************/
117
118#include "config.h"
119
120#if HAVE_ST_XTIMENSEC
121# define ATIMENSEC PL_statcache.st_atimensec
122# define MTIMENSEC PL_statcache.st_mtimensec
123# define CTIMENSEC PL_statcache.st_ctimensec
124#elif HAVE_ST_XTIMESPEC
125# define ATIMENSEC PL_statcache.st_atim.tv_nsec
126# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
127# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
128#else
129# define ATIMENSEC 0
130# define MTIMENSEC 0
131# define CTIMENSEC 0
132#endif
133
134#include "schmorp.h"
135
136#if HAVE_EVENTFD
137# include <sys/eventfd.h>
138#endif
139
140#if HAVE_TIMERFD
141# include <sys/timerfd.h>
142#endif
143
144#if HAVE_RLIMITS
145 #include <sys/time.h>
146 #include <sys/resource.h>
147#endif
148
149typedef SV SV8; /* byte-sv, used for argument-checking */
150typedef int aio_rfd; /* read file desriptor */
151typedef int aio_wfd; /* write file descriptor */
152
153static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
154
155#define EIO_REQ_MEMBERS \
156 SV *callback; \
157 SV *sv1, *sv2; \
158 SV *sv3, *sv4; \
159 STRLEN stroffset; \
160 SV *self;
161
162#define EIO_NO_WRAPPERS 1
163
164#include "libeio/eio.h"
165
166static int req_invoke (eio_req *req);
167#define EIO_FINISH(req) req_invoke (req)
168static void req_destroy (eio_req *grp);
169#define EIO_DESTROY(req) req_destroy (req)
170
171#include "libeio/eio.c"
172
173#if !HAVE_POSIX_FADVISE
174# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
175#endif
176
177#if !HAVE_POSIX_MADVISE
178# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
179#endif
180
181#ifndef MAP_ANONYMOUS
182# ifdef MAP_ANON
183# define MAP_ANONYMOUS MAP_ANON
42# else 184# else
43# error sendfile support requested but not available 185# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44# endif 186# endif
45#endif 187#endif
46 188
47/* used for struct dirent, AIX doesn't provide it */ 189#ifndef makedev
48#ifndef NAME_MAX 190# define makedev(maj,min) (((maj) << 8) | (min))
49# define NAME_MAX 4096
50#endif 191#endif
51 192#ifndef major
52#if __ia64 193# define major(dev) ((dev) >> 8)
53# define STACKSIZE 65536
54#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55# define STACKSIZE PTHREAD_STACK_MIN
56#else
57# define STACKSIZE 16384
58#endif 194#endif
195#ifndef minor
196# define minor(dev) ((dev) & 0xff)
197#endif
59 198
60/* buffer size for various temporary buffers */ 199#if PAGESIZE <= 0
61#define AIO_BUFSIZE 65536 200# define PAGESIZE sysconf (_SC_PAGESIZE)
201#endif
62 202
63#define dBUF \ 203/*****************************************************************************/
64 char *aio_buf; \ 204
65 LOCK (wrklock); \ 205#if !_POSIX_MAPPED_FILES
66 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 206# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
67 UNLOCK (wrklock); \ 207# define munmap(addr,length) EIO_ENOSYS ()
68 if (!aio_buf) \ 208#endif
209
210#if !_POSIX_MEMORY_PROTECTION
211# define mprotect(addr,len,prot) EIO_ENOSYS ()
212#endif
213
214#if !MREMAP_MAYMOVE
215# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
216#endif
217
218#define FOREIGN_MAGIC PERL_MAGIC_ext
219
220static int ecb_cold
221mmap_free (pTHX_ SV *sv, MAGIC *mg)
222{
223 int old_errno = errno;
224 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
225 errno = old_errno;
226
227 mg->mg_obj = 0; /* just in case */
228
229 SvREADONLY_off (sv);
230
231 if (SvPVX (sv) != mg->mg_ptr)
232 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
233
234 SvCUR_set (sv, 0);
235 SvPVX (sv) = 0;
236 SvOK_off (sv);
237
69 return -1; 238 return 0;
239}
70 240
71enum { 241static MGVTBL mmap_vtbl = {
72 REQ_QUIT, 242 0, 0, 0, 0, mmap_free
73 REQ_OPEN, REQ_CLOSE,
74 REQ_READ, REQ_WRITE, REQ_READAHEAD,
75 REQ_SENDFILE,
76 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79 REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK,
81 REQ_GROUP, REQ_NOP,
82 REQ_BUSY,
83}; 243};
84 244
85#define AIO_REQ_KLASS "IO::AIO::REQ" 245static int ecb_cold
86#define AIO_GRP_KLASS "IO::AIO::GRP" 246sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88typedef struct aio_cb
89{ 247{
90 struct aio_cb *volatile next; 248 free (mg->mg_ptr);
249 mg->mg_obj = 0; /* just in case */
91 250
92 SV *data, *callback; 251 SvREADONLY_off (sv);
93 SV *fh, *fh2;
94 void *dataptr, *data2ptr;
95 Stat_t *statdata;
96 off_t offset;
97 size_t length;
98 ssize_t result;
99 252
100 STRLEN dataoffset; 253 if (SvPVX (sv) != mg->mg_ptr)
101 int type; 254 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102 int fd, fd2;
103 int errorno;
104 mode_t mode; /* open */
105 255
106 unsigned char flags; 256 SvCUR_set (sv, 0);
107 unsigned char pri; 257 SvPVX (sv) = 0;
258 SvOK_off (sv);
108 259
109 SV *self; /* the perl counterpart of this request, if any */ 260 return 0;
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 261}
111} aio_cb;
112 262
113enum { 263static MGVTBL sysfree_vtbl = {
114 FLAG_CANCELLED = 0x01, 264 0, 0, 0, 0, sysfree_free
115}; 265};
116 266
117typedef aio_cb *aio_req; 267/*****************************************************************************/
118typedef aio_cb *aio_req_ornot;
119 268
120enum { 269/* helper: set scalar to foreign ptr with custom free */
121 PRI_MIN = -4, 270static void
122 PRI_MAX = 4, 271sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
123
124 DEFAULT_PRI = 0,
125 PRI_BIAS = -PRI_MIN,
126 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127};
128
129static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131static int started, wanted;
132static volatile int nreqs;
133static int respipe [2];
134
135#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137#else
138# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139#endif
140
141#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144/* worker threasd management */
145static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
146
147typedef struct worker {
148 /* locked by wrklock */
149 struct worker *prev, *next;
150
151 pthread_t tid;
152
153 /* locked by reslock, reqlock or wrklock */
154 aio_req req; /* currently processed request */
155 void *dbuf;
156 DIR *dirp;
157} worker;
158
159static worker wrk_first = { &wrk_first, &wrk_first, 0 };
160
161static void worker_clear (worker *wrk)
162{ 272{
163 if (wrk->dirp) 273 sv_force_normal (sv);
274
275 /* we store the length in mg_obj, as namlen is I32 :/ */
276 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
277 ->mg_obj = (SV *)length;
278
279 SvUPGRADE (sv, SVt_PV); /* nop... */
280
281 if (SvLEN (sv))
282 Safefree (SvPVX (sv));
283
284 SvPVX (sv) = (char *)addr;
285 SvCUR_set (sv, length);
286 SvLEN_set (sv, 0);
287 SvPOK_only (sv);
288}
289
290static void
291sv_clear_foreign (SV *sv)
292{
293 /* todo: iterate over magic and only free ours, but of course */
294 /* the perl5porters will call that (correct) behaviour buggy */
295 sv_unmagic (sv, FOREIGN_MAGIC);
296}
297
298/*****************************************************************************/
299
300/* defines all sorts of constants to 0 unless they are already defined */
301/* also provides const_iv_ and const_niv_ macros for them */
302#include "def0.h"
303
304/*****************************************************************************/
305
306static void
307fiemap (eio_req *req)
308{
309 req->result = -1;
310
311#if HAVE_FIEMAP
312 /* assume some c99 */
313 struct fiemap *fiemap = 0;
314 size_t end_offset;
315 int count = req->int3;
316
317 req->flags |= EIO_FLAG_PTR1_FREE;
318
319 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
320 /* increase in 3.5kb steps */
321 if (count < 0)
322 count = 8;
323
324 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
325 errno = ENOMEM;
326 if (!fiemap)
327 return;
328
329 req->ptr1 = fiemap;
330
331 fiemap->fm_start = req->offs;
332 fiemap->fm_length = req->size;
333 fiemap->fm_flags = req->int2;
334 fiemap->fm_extent_count = count;
335
336 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
337 return;
338
339 if (req->int3 >= 0 /* not autosizing */
340 || !fiemap->fm_mapped_extents /* no more extents */
341 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
342 goto done;
343
344 /* else we have to loop -
345 * it would be tempting (actually I tried that first) to just query the
346 * number of extents needed, but linux often feels like not returning all
347 * extents, without telling us it left any out. this complicates
348 * this quite a bit.
349 */
350
351 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
352
353 for (;;)
164 { 354 {
165 closedir (wrk->dirp); 355 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
166 wrk->dirp = 0; 356 char scratch[3072];
167 } 357 struct fiemap *incmap = (struct fiemap *)scratch;
168 358
169 if (wrk->dbuf) 359 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
170 { 360 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
171 free (wrk->dbuf); 361 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
172 wrk->dbuf = 0; 362 incmap->fm_flags = fiemap->fm_flags;
173 } 363 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
174}
175 364
176static void worker_free (worker *wrk) 365 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
177{
178 wrk->next->prev = wrk->prev;
179 wrk->prev->next = wrk->next;
180
181 free (wrk);
182}
183
184static pthread_mutex_t reslock = AIO_MUTEX_INIT;
185static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
186static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
187
188/*
189 * a somewhat faster data structure might be nice, but
190 * with 8 priorities this actually needs <20 insns
191 * per shift, the most expensive operation.
192 */
193typedef struct {
194 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
195 int size;
196} reqq;
197
198static reqq req_queue;
199static reqq res_queue;
200
201int reqq_push (reqq *q, aio_req req)
202{
203 int pri = req->pri;
204 req->next = 0;
205
206 if (q->qe[pri])
207 {
208 q->qe[pri]->next = req;
209 q->qe[pri] = req;
210 }
211 else
212 q->qe[pri] = q->qs[pri] = req;
213
214 return q->size++;
215}
216
217aio_req reqq_shift (reqq *q)
218{
219 int pri;
220
221 if (!q->size)
222 return 0; 366 return;
223 367
224 --q->size; 368 if (!incmap->fm_mapped_extents)
369 goto done;
225 370
226 for (pri = NUM_PRI; pri--; ) 371 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
227 { 372 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
228 aio_req req = q->qs[pri]; 373 errno = ENOMEM;
229
230 if (req) 374 if (!fiemap)
375 return;
376
377 req->ptr1 = fiemap;
378
379 for (count = 0; count < incmap->fm_mapped_extents; ++count)
231 { 380 {
232 if (!(q->qs[pri] = req->next)) 381 struct fiemap_extent *e = incmap->fm_extents + count;
233 q->qe[pri] = 0;
234 382
235 return req; 383 if (e->fe_logical + e->fe_length >= end_offset)
384 goto done;
385
386 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
387
388 if (e->fe_flags & FIEMAP_EXTENT_LAST)
389 goto done;
390
236 } 391 }
237 } 392 }
238 393
239 abort (); 394done:
240} 395 req->result = 0;
241 396
242static int poll_cb (); 397#else
243static void req_invoke (aio_req req); 398 errno = ENOSYS;
399#endif
400}
401
402/*****************************************************************************/
403
404enum {
405 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
406};
407
408typedef eio_req *aio_req;
409typedef eio_req *aio_req_ornot;
410typedef eio_wd aio_wd;
411
412static SV *on_next_submit;
413static int next_pri = EIO_PRI_DEFAULT;
414static int max_outstanding;
415
416static s_epipe respipe;
417
244static void req_free (aio_req req); 418static void req_destroy (aio_req req);
245static void req_cancel (aio_req req); 419static void req_cancel (aio_req req);
246 420
421static void
422want_poll (void)
423{
424 /* write a dummy byte to the pipe so fh becomes ready */
425 s_epipe_signal (&respipe);
426}
427
428static void
429done_poll (void)
430{
431 /* read any signals sent by the worker threads */
432 s_epipe_drain (&respipe);
433}
434
247/* must be called at most once */ 435/* must be called at most once */
248static SV *req_sv (aio_req req, const char *klass) 436static SV *
437req_sv (aio_req req, HV *stash)
249{ 438{
250 if (!req->self) 439 if (!req->self)
251 { 440 {
252 req->self = (SV *)newHV (); 441 req->self = (SV *)newHV ();
253 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 442 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254 } 443 }
255 444
256 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 445 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257} 446}
258 447
259static aio_req SvAIO_REQ (SV *sv) 448static SV *
449newSVaio_wd (aio_wd wd)
450{
451 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
452}
453
454static aio_req
455SvAIO_REQ (SV *sv)
260{ 456{
261 MAGIC *mg; 457 MAGIC *mg;
262 458
263 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 459 if (!SvROK (sv)
460 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
461 || (SvSTASH (SvRV (sv)) != aio_grp_stash
462 && SvSTASH (SvRV (sv)) != aio_req_stash
463 && !sv_derived_from (sv, "IO::AIO::REQ")))
264 croak ("object of class " AIO_REQ_KLASS " expected"); 464 croak ("object of class IO::AIO::REQ expected");
265 465
266 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 466 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267 467
268 return mg ? (aio_req)mg->mg_ptr : 0; 468 return mg ? (aio_req)mg->mg_ptr : 0;
269} 469}
270 470
471static aio_wd
472SvAIO_WD (SV *sv)
473{
474 if (!SvROK (sv)
475 || SvTYPE (SvRV (sv)) != SVt_PVMG
476 || SvSTASH (SvRV (sv)) != aio_wd_stash)
477 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
478
479 return (aio_wd)(long)SvIVX (SvRV (sv));
480}
481
482static SV *
483newmortalFH (int fd, int flags)
484{
485 if (fd < 0)
486 return &PL_sv_undef;
487
488 GV *gv = (GV *)sv_newmortal ();
489 char sym[64];
490 int symlen;
491
492 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
493 gv_init (gv, aio_stash, sym, symlen, 0);
494
495 symlen = snprintf (
496 sym,
497 sizeof (sym),
498 "%s&=%d",
499 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
500 fd
501 );
502
503 return do_open (gv, sym, symlen, 0, 0, 0, 0)
504 ? (SV *)gv : &PL_sv_undef;
505}
506
507static void
271static void aio_grp_feed (aio_req grp) 508aio_grp_feed (aio_req grp)
272{ 509{
273 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 510 if (grp->sv2 && SvOK (grp->sv2))
274 { 511 {
275 int old_len = grp->length;
276
277 if (grp->fh2 && SvOK (grp->fh2))
278 {
279 dSP; 512 dSP;
280 513
281 ENTER; 514 ENTER;
282 SAVETMPS; 515 SAVETMPS;
283 PUSHMARK (SP); 516 PUSHMARK (SP);
284 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 517 XPUSHs (req_sv (grp, aio_grp_stash));
285 PUTBACK; 518 PUTBACK;
286 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 519 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287 SPAGAIN; 520 SPAGAIN;
288 FREETMPS; 521 FREETMPS;
289 LEAVE; 522 LEAVE;
290 }
291
292 /* stop if no progress has been made */
293 if (old_len == grp->length)
294 {
295 SvREFCNT_dec (grp->fh2);
296 grp->fh2 = 0;
297 break;
298 }
299 } 523 }
300} 524}
301 525
302static void aio_grp_dec (aio_req grp) 526static void
527req_submit (eio_req *req)
303{ 528{
304 --grp->length; 529 eio_submit (req);
305 530
306 /* call feeder, if applicable */ 531 if (expect_false (on_next_submit))
307 aio_grp_feed (grp);
308
309 /* finish, if done */
310 if (!grp->length && grp->fd)
311 { 532 {
312 req_invoke (grp); 533 dSP;
313 req_free (grp); 534 SV *cb = sv_2mortal (on_next_submit);
535
536 on_next_submit = 0;
537
538 PUSHMARK (SP);
539 PUTBACK;
540 call_sv (cb, G_DISCARD | G_EVAL);
314 } 541 }
315} 542}
316 543
317static void poll_wait () 544static int
545req_invoke (eio_req *req)
318{ 546{
319 fd_set rfd; 547 if (req->flags & FLAG_SV2_RO_OFF)
548 SvREADONLY_off (req->sv2);
320 549
321 while (nreqs) 550 if (!EIO_CANCELLED (req) && req->callback)
322 { 551 {
323 int size;
324#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325 LOCK (reslock);
326#endif
327 size = res_queue.size;
328#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329 UNLOCK (reslock);
330#endif
331
332 if (size)
333 return;
334
335 FD_ZERO(&rfd);
336 FD_SET(respipe [0], &rfd);
337
338 select (respipe [0] + 1, &rfd, 0, 0, 0);
339 }
340}
341
342static void req_invoke (aio_req req)
343{
344 dSP; 552 dSP;
345 553 static SV *sv_result_cache; /* caches the result integer SV */
346 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 554 SV *sv_result;
347 {
348 errno = req->errorno;
349 555
350 ENTER; 556 ENTER;
351 SAVETMPS; 557 SAVETMPS;
352 PUSHMARK (SP); 558 PUSHMARK (SP);
353 EXTEND (SP, 1); 559 EXTEND (SP, 1);
354 560
561 /* do not recreate the result IV from scratch each time */
562 if (expect_true (sv_result_cache))
563 {
564 sv_result = sv_result_cache; sv_result_cache = 0;
565 SvIV_set (sv_result, req->result);
566 SvIOK_only (sv_result);
567 }
568 else
569 {
570 sv_result = newSViv (req->result);
571 SvREADONLY_on (sv_result);
572 }
573
355 switch (req->type) 574 switch (req->type)
356 { 575 {
576 case EIO_WD_OPEN:
577 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
578 break;
579
357 case REQ_READDIR: 580 case EIO_READDIR:
358 { 581 {
359 SV *rv = &PL_sv_undef; 582 SV *rv = &PL_sv_undef;
360 583
361 if (req->result >= 0) 584 if (req->result >= 0)
362 { 585 {
363 int i; 586 int i;
364 char *buf = req->data2ptr; 587 char *names = (char *)req->ptr2;
588 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365 AV *av = newAV (); 589 AV *av = newAV ();
366 590
367 av_extend (av, req->result - 1); 591 av_extend (av, req->result - 1);
368 592
369 for (i = 0; i < req->result; ++i) 593 for (i = 0; i < req->result; ++i)
370 { 594 {
371 SV *sv = newSVpv (buf, 0); 595 if (req->int1 & EIO_READDIR_DENTS)
596 {
597 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372 598
599 if (req->int1 & EIO_READDIR_CUSTOM2)
600 {
601 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
602 AV *avent = newAV ();
603
604 av_extend (avent, 2);
605
606 if (!sv_type [ent->type])
607 {
608 sv_type [ent->type] = newSViv (ent->type);
609 SvREADONLY_on (sv_type [ent->type]);
610 }
611
612 av_store (avent, 0, namesv);
613 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
614 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
615
616 av_store (av, i, newRV_noinc ((SV *)avent));
617 }
618 else
373 av_store (av, i, sv); 619 av_store (av, i, namesv);
620
621 ++ent;
622 }
623 else
624 {
625 SV *name = newSVpv (names, 0);
626 av_store (av, i, name);
374 buf += SvCUR (sv) + 1; 627 names += SvCUR (name) + 1;
628 }
375 } 629 }
376 630
377 rv = sv_2mortal (newRV_noinc ((SV *)av)); 631 rv = sv_2mortal (newRV_noinc ((SV *)av));
378 } 632 }
379 633
380 PUSHs (rv); 634 PUSHs (rv);
635
636 if (req->int1 & EIO_READDIR_CUSTOM1)
637 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381 } 638 }
382 break; 639 break;
383 640
384 case REQ_OPEN: 641 case EIO_OPEN:
642 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
643 break;
644
645 case EIO_STATVFS:
646 case EIO_FSTATVFS:
385 { 647 {
386 /* convert fd to fh */ 648 SV *rv = &PL_sv_undef;
387 SV *fh; 649
650#ifndef _WIN32
651 if (req->result >= 0)
652 {
653 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
654 HV *hv = newHV ();
655 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
656 * chooses to make it a struct.
657 */
658 unsigned long fsid = 0;
659 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
388 660
389 PUSHs (sv_2mortal (newSViv (req->result))); 661 rv = sv_2mortal (newRV_noinc ((SV *)hv));
390 PUTBACK;
391 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
392 SPAGAIN;
393 662
394 fh = SvREFCNT_inc (POPs); 663 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
664 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
665 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
666 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
667 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
668 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
669 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
670 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
671 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
672 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
673 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
674 }
675#endif
395 676
396 PUSHMARK (SP); 677 PUSHs (rv);
397 XPUSHs (sv_2mortal (fh));
398 } 678 }
679
399 break; 680 break;
400 681
401 case REQ_GROUP: 682 case EIO_GROUP:
402 req->fd = 2; /* mark group as finished */ 683 req->int1 = 2; /* mark group as finished */
403 684
404 if (req->data) 685 if (req->sv1)
405 { 686 {
406 int i; 687 int i;
407 AV *av = (AV *)req->data; 688 AV *av = (AV *)req->sv1;
408 689
409 EXTEND (SP, AvFILL (av) + 1); 690 EXTEND (SP, AvFILL (av) + 1);
410 for (i = 0; i <= AvFILL (av); ++i) 691 for (i = 0; i <= AvFILL (av); ++i)
411 PUSHs (*av_fetch (av, i, 0)); 692 PUSHs (*av_fetch (av, i, 0));
412 } 693 }
413 break; 694 break;
414 695
415 case REQ_NOP: 696 case EIO_NOP:
416 case REQ_BUSY: 697 case EIO_BUSY:
417 break; 698 break;
418 699
700 case EIO_READLINK:
701 case EIO_REALPATH:
702 if (req->result > 0)
703 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
704 break;
705
706 case EIO_STAT:
707 case EIO_LSTAT:
708 case EIO_FSTAT:
709 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
710
711 if (!(PL_laststatval = req->result))
712 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
713 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
714
715 PUSHs (sv_result);
716 break;
717
718 case EIO_SEEK:
719 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
720 break;
721
722 case EIO_READ:
723 {
724 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
725 *SvEND (req->sv2) = 0;
726 SvPOK_only (req->sv2);
727 SvSETMAGIC (req->sv2);
728 PUSHs (sv_result);
729 }
730 break;
731
732 case EIO_SLURP:
733 {
734 if (req->result >= 0)
735 {
736 /* if length was originally not known, we steal the malloc'ed memory */
737 if (req->flags & EIO_FLAG_PTR2_FREE)
738 {
739 req->flags &= ~EIO_FLAG_PTR2_FREE;
740 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
741 }
742 else
743 {
744 SvCUR_set (req->sv2, req->result);
745 *SvEND (req->sv2) = 0;
746 SvPOK_only (req->sv2);
747 }
748
749 SvSETMAGIC (req->sv2);
750 }
751
752 PUSHs (sv_result);
753 }
754 break;
755
756 case EIO_CUSTOM:
757 if (req->feed == fiemap)
758 {
759#if HAVE_FIEMAP
760 if (!req->result)
761 {
762 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
763
764 if (fiemap->fm_extent_count)
765 {
766 AV *av = newAV ();
767 int i;
768
769 while (fiemap->fm_mapped_extents)
770 {
771 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
772 AV *ext_av = newAV ();
773
774 av_store (ext_av, 3, newSVuv (extent->fe_flags));
775 av_store (ext_av, 2, newSVval64 (extent->fe_length));
776 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
777 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
778
779 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
780 }
781
782 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
783 }
784 else
785 {
786 SvIV_set (sv_result, fiemap->fm_mapped_extents);
787 PUSHs (sv_result);
788 }
789 }
790#endif
791 }
792 else
793 PUSHs (sv_result);
794 break;
795
796 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
797 if (req->result > 0)
798 SvIV_set (sv_result, 0);
799 /* FALLTHROUGH */
800
419 default: 801 default:
420 PUSHs (sv_2mortal (newSViv (req->result))); 802 PUSHs (sv_result);
421 break; 803 break;
422 } 804 }
423 805
806 errno = req->errorno;
424 807
425 PUTBACK; 808 PUTBACK;
426 call_sv (req->callback, G_VOID | G_EVAL); 809 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427 SPAGAIN; 810 SPAGAIN;
811
812 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
813 SvREFCNT_dec (sv_result);
814 else
815 sv_result_cache = sv_result;
428 816
429 FREETMPS; 817 FREETMPS;
430 LEAVE; 818 LEAVE;
819
820 PUTBACK;
431 } 821 }
432 822
433 if (req->grp) 823 return !!SvTRUE (ERRSV);
434 {
435 aio_req grp = req->grp;
436
437 /* unlink request */
438 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441 if (grp->grp_first == req)
442 grp->grp_first = req->grp_next;
443
444 aio_grp_dec (grp);
445 }
446
447 if (SvTRUE (ERRSV))
448 {
449 req_free (req);
450 croak (0);
451 }
452} 824}
453 825
454static void req_free (aio_req req) 826static void
827req_destroy (aio_req req)
455{ 828{
456 if (req->self) 829 if (req->self)
457 { 830 {
458 sv_unmagic (req->self, PERL_MAGIC_ext); 831 sv_unmagic (req->self, PERL_MAGIC_ext);
459 SvREFCNT_dec (req->self); 832 SvREFCNT_dec (req->self);
460 } 833 }
461 834
462 SvREFCNT_dec (req->data);
463 SvREFCNT_dec (req->fh); 835 SvREFCNT_dec (req->sv1);
464 SvREFCNT_dec (req->fh2); 836 SvREFCNT_dec (req->sv2);
837 SvREFCNT_dec (req->sv3);
838 SvREFCNT_dec (req->sv4);
465 SvREFCNT_dec (req->callback); 839 SvREFCNT_dec (req->callback);
466 Safefree (req->statdata);
467 840
468 if (req->type == REQ_READDIR)
469 free (req->data2ptr);
470
471 Safefree (req); 841 free (req);
472} 842}
473 843
844static void
474static void req_cancel_subs (aio_req grp) 845req_cancel_subs (aio_req grp)
475{ 846{
476 aio_req sub;
477
478 if (grp->type != REQ_GROUP) 847 if (grp->type != EIO_GROUP)
479 return; 848 return;
480 849
481 SvREFCNT_dec (grp->fh2); 850 SvREFCNT_dec (grp->sv2);
482 grp->fh2 = 0; 851 grp->sv2 = 0;
483 852
484 for (sub = grp->grp_first; sub; sub = sub->grp_next) 853 eio_grp_cancel (grp);
485 req_cancel (sub);
486} 854}
487 855
488static void req_cancel (aio_req req) 856static void ecb_cold
857create_respipe (void)
489{ 858{
490 req->flags |= FLAG_CANCELLED; 859 if (s_epipe_renew (&respipe))
491 860 croak ("IO::AIO: unable to initialize result pipe");
492 req_cancel_subs (req);
493} 861}
494 862
495static int poll_cb () 863static void
864poll_wait (void)
496{ 865{
497 dSP; 866 while (eio_nreqs ())
498 int count = 0; 867 {
499 int do_croak = 0; 868 int size;
500 aio_req req;
501 869
870 X_LOCK (EIO_POOL->reslock);
871 size = EIO_POOL->res_queue.size;
872 X_UNLOCK (EIO_POOL->reslock);
873
874 if (size)
875 return;
876
877 etp_maybe_start_thread (EIO_POOL);
878
879 s_epipe_wait (&respipe);
880 }
881}
882
883static int
884poll_cb (void)
885{
502 for (;;) 886 for (;;)
503 { 887 {
504 LOCK (reslock); 888 int res = eio_poll ();
505 req = reqq_shift (&res_queue);
506 889
507 if (req) 890 if (res > 0)
891 croak (0);
892
893 if (!max_outstanding || max_outstanding > eio_nreqs ())
894 return res;
895
896 poll_wait ();
897 }
898}
899
900static void ecb_cold
901reinit (void)
902{
903 create_respipe ();
904
905 if (eio_init (want_poll, done_poll) < 0)
906 croak ("IO::AIO: unable to initialise eio library");
907}
908
909/*****************************************************************************/
910
911static SV *
912get_cb (SV *cb_sv)
913{
914 SvGETMAGIC (cb_sv);
915 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
916}
917
918static aio_req ecb_noinline
919dreq (SV *callback)
920{
921 SV *cb_cv;
922 aio_req req;
923 int req_pri = next_pri;
924 next_pri = EIO_PRI_DEFAULT;
925
926 cb_cv = get_cb (callback);
927
928 req = calloc (sizeof (*req), 1);
929 if (!req)
930 croak ("out of memory during eio_req allocation");
931
932 req->callback = SvREFCNT_inc (cb_cv);
933 req->pri = req_pri;
934
935 return req;
936}
937
938#define dREQ \
939 aio_req req = dreq (callback); \
940
941#define REQ_SEND \
942 PUTBACK; \
943 req_submit (req); \
944 SPAGAIN; \
945 \
946 if (GIMME_V != G_VOID) \
947 XPUSHs (req_sv (req, aio_req_stash));
948
949ecb_inline void
950req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
951{
952 if (expect_false (SvROK (path)))
953 {
954 SV *rv = SvRV (path);
955 SV *wdob;
956
957 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
508 { 958 {
509 if (!res_queue.size) 959 path = AvARRAY (rv)[1];
960 wdob = AvARRAY (rv)[0];
961
962 if (SvOK (wdob))
510 { 963 {
511 /* read any signals sent by the worker threads */ 964 *wd = SvAIO_WD (wdob);
512 char buf [32]; 965 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513 while (read (respipe [0], buf, 32) == 32)
514 ;
515 } 966 }
967 else
968 *wd = EIO_INVALID_WD;
516 } 969 }
517 970 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
518 UNLOCK (reslock);
519
520 if (!req)
521 break;
522
523 --nreqs;
524
525 if (req->type == REQ_QUIT)
526 started--;
527 else if (req->type == REQ_GROUP && req->length)
528 { 971 {
529 req->fd = 1; /* mark request as delayed */ 972 *wd = (aio_wd)(long)SvIVX (rv);
530 continue; 973 *wdsv = SvREFCNT_inc_NN (rv);
974 *ptr = ".";
975 return; /* path set to "." */
531 } 976 }
532 else 977 else
533 { 978 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
534 if (req->type == REQ_READ)
535 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538 SvREADONLY_off (req->data);
539
540 if (req->statdata)
541 {
542 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543 PL_laststatval = req->result;
544 PL_statcache = *(req->statdata);
545 }
546
547 req_invoke (req);
548
549 count++;
550 }
551
552 req_free (req);
553 } 979 }
554 980
555 return count; 981 *pathsv = newSVsv (path);
982 *ptr = SvPVbyte_nolen (*pathsv);
556} 983}
557 984
558static void *aio_proc(void *arg); 985static void ecb_noinline
559 986req_set_path1 (aio_req req, SV *path)
560static void start_thread (void)
561{ 987{
562 sigset_t fullsigset, oldsigset; 988 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
563 pthread_attr_t attr; 989}
564 990
565 worker *wrk = calloc (1, sizeof (worker)); 991static void ecb_noinline
992req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
993{
994 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566 995
567 if (!wrk) 996 switch (SvTYPE (rv))
568 croak ("unable to allocate worker thread data");
569
570 pthread_attr_init (&attr);
571 pthread_attr_setstacksize (&attr, STACKSIZE);
572 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574 sigfillset (&fullsigset);
575
576 LOCK (wrklock);
577 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580 { 997 {
581 wrk->prev = &wrk_first; 998 case SVt_PVIO:
582 wrk->next = wrk_first.next; 999 case SVt_PVLV:
583 wrk_first.next->prev = wrk; 1000 case SVt_PVGV:
584 wrk_first.next = wrk; 1001 req->type = type_fh;
585 started++; 1002 req->sv1 = newSVsv (fh_or_path);
1003 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1004 break;
1005
1006 default:
1007 req->type = type_path;
1008 req_set_path1 (req, fh_or_path);
1009 break;
586 } 1010 }
587 else
588 free (wrk);
589
590 sigprocmask (SIG_SETMASK, &oldsigset, 0);
591 UNLOCK (wrklock);
592}
593
594static void req_send (aio_req req)
595{
596 while (started < wanted && nreqs >= started)
597 start_thread ();
598
599 ++nreqs;
600
601 LOCK (reqlock);
602 reqq_push (&req_queue, req);
603 pthread_cond_signal (&reqwait);
604 UNLOCK (reqlock);
605}
606
607static void end_thread (void)
608{
609 aio_req req;
610
611 Newz (0, req, 1, aio_cb);
612
613 req->type = REQ_QUIT;
614 req->pri = PRI_MAX + PRI_BIAS;
615
616 req_send (req);
617}
618
619static void min_parallel (int nthreads)
620{
621 if (wanted < nthreads)
622 wanted = nthreads;
623}
624
625static void max_parallel (int nthreads)
626{
627 int cur = started;
628
629 if (wanted > nthreads)
630 wanted = nthreads;
631
632 while (cur > wanted)
633 {
634 end_thread ();
635 cur--;
636 }
637
638 while (started > wanted)
639 {
640 poll_wait ();
641 poll_cb ();
642 }
643}
644
645static void create_pipe ()
646{
647 if (pipe (respipe))
648 croak ("unable to initialize result pipe");
649
650 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
651 croak ("cannot set result pipe to nonblocking mode");
652
653 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
654 croak ("cannot set result pipe to nonblocking mode");
655} 1011}
656 1012
657/*****************************************************************************/ 1013/*****************************************************************************/
658/* work around various missing functions */
659 1014
660#if !HAVE_PREADWRITE 1015static void
661# define pread aio_pread 1016ts_set (struct timespec *ts, NV value)
662# define pwrite aio_pwrite
663
664/*
665 * make our pread/pwrite safe against themselves, but not against
666 * normal read/write by using a mutex. slows down execution a lot,
667 * but that's your problem, not mine.
668 */
669static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
670
671static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
672{ 1017{
673 ssize_t res; 1018 ts->tv_sec = value;
674 off_t ooffset; 1019 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
675
676 LOCK (preadwritelock);
677 ooffset = lseek (fd, 0, SEEK_CUR);
678 lseek (fd, offset, SEEK_SET);
679 res = read (fd, buf, count);
680 lseek (fd, ooffset, SEEK_SET);
681 UNLOCK (preadwritelock);
682
683 return res;
684} 1020}
685 1021
686static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1022static NV
1023ts_get (const struct timespec *ts)
687{ 1024{
688 ssize_t res; 1025 return ts->tv_sec + ts->tv_nsec * 1e-9;
689 off_t ooffset;
690
691 LOCK (preadwritelock);
692 ooffset = lseek (fd, 0, SEEK_CUR);
693 lseek (fd, offset, SEEK_SET);
694 res = write (fd, buf, count);
695 lseek (fd, offset, SEEK_SET);
696 UNLOCK (preadwritelock);
697
698 return res;
699} 1026}
700#endif
701 1027
702#if !HAVE_FDATASYNC 1028/*****************************************************************************/
703# define fdatasync fsync
704#endif
705 1029
706#if !HAVE_READAHEAD 1030XS(boot_IO__AIO) ecb_cold;
707# define readahead aio_readahead
708 1031
709static ssize_t readahead (int fd, off_t offset, size_t count) 1032MODULE = IO::AIO PACKAGE = IO::AIO
710{
711 dBUF;
712 1033
713 while (count > 0) 1034PROTOTYPES: ENABLE
714 {
715 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
716 1035
717 pread (fd, aio_buf, len, offset); 1036BOOT:
718 offset += len;
719 count -= len;
720 }
721
722 errno = 0;
723}
724#endif
725
726#if !HAVE_READDIR_R
727# define readdir_r aio_readdir_r
728
729static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
730
731static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
732{ 1037{
733 struct dirent *e; 1038 static const struct {
734 int errorno; 1039 const char *name;
1040 IV iv;
1041 } *civ, const_iv[] = {
1042# define const_niv(name, value) { # name, (IV) value },
1043# define const_iv(name) { # name, (IV) name },
1044# define const_eio(name) { # name, (IV) EIO_ ## name },
735 1045
736 LOCK (readdirlock); 1046 /* you have to re-run ./gendef0 after adding/removing any constants here */
1047 /* the first block can be undef if missing */
1048 const_iv (ENOSYS)
1049 const_iv (EXDEV)
1050 const_iv (EBADR)
737 1051
738 e = readdir (dirp); 1052 /* for lseek */
739 errorno = errno; 1053 const_iv (SEEK_DATA)
1054 const_iv (SEEK_HOLE)
740 1055
741 if (e) 1056 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
742 { 1057 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
743 *res = ent; 1058 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
744 strcpy (ent->d_name, e->d_name); 1059 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
745 } 1060 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
746 else 1061 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
747 *res = 0;
748 1062
749 UNLOCK (readdirlock); 1063 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1064 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1065 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1066 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1067 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
750 1068
751 errno = errorno; 1069 /* the second block will be 0 when missing */
752 return e ? 0 : -1; 1070 const_iv (O_ACCMODE)
753}
754#endif
755 1071
756/* sendfile always needs emulation */ 1072 const_iv (O_RDONLY)
757static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1073 const_iv (O_WRONLY)
758{ 1074 const_iv (O_RDWR)
759 ssize_t res; 1075 const_iv (O_CREAT)
1076 const_iv (O_TRUNC)
1077 const_iv (O_EXCL)
1078 const_iv (O_APPEND)
760 1079
761 if (!count) 1080 const_iv (O_ASYNC)
762 return 0; 1081 const_iv (O_DIRECT)
1082 const_iv (O_NOATIME)
763 1083
764#if HAVE_SENDFILE 1084 const_iv (O_CLOEXEC)
765# if __linux 1085 const_iv (O_NOCTTY)
766 res = sendfile (ofd, ifd, &offset, count); 1086 const_iv (O_NOFOLLOW)
1087 const_iv (O_NONBLOCK)
1088 const_iv (O_EXEC)
1089 const_iv (O_SEARCH)
1090 const_iv (O_DIRECTORY)
1091 const_iv (O_DSYNC)
1092 const_iv (O_RSYNC)
1093 const_iv (O_SYNC)
1094 const_iv (O_PATH)
1095 const_iv (O_TMPFILE)
1096 const_iv (O_TTY_INIT)
767 1097
768# elif __freebsd 1098 const_iv (S_IFIFO)
769 /* 1099 const_iv (S_IFCHR)
770 * Of course, the freebsd sendfile is a dire hack with no thoughts 1100 const_iv (S_IFBLK)
771 * wasted on making it similar to other I/O functions. 1101 const_iv (S_IFLNK)
772 */ 1102 const_iv (S_IFREG)
773 { 1103 const_iv (S_IFDIR)
774 off_t sbytes; 1104 const_iv (S_IFWHT)
775 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1105 const_iv (S_IFSOCK)
1106 const_iv (S_IFMT)
776 1107
777 if (res < 0 && sbytes) 1108 const_iv (ST_RDONLY)
778 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1109 const_iv (ST_NOSUID)
779 res = sbytes; 1110 const_iv (ST_NODEV)
1111 const_iv (ST_NOEXEC)
1112 const_iv (ST_SYNCHRONOUS)
1113 const_iv (ST_MANDLOCK)
1114 const_iv (ST_WRITE)
1115 const_iv (ST_APPEND)
1116 const_iv (ST_IMMUTABLE)
1117 const_iv (ST_NOATIME)
1118 const_iv (ST_NODIRATIME)
1119 const_iv (ST_RELATIME)
1120
1121 const_iv (PROT_NONE)
1122 const_iv (PROT_EXEC)
1123 const_iv (PROT_READ)
1124 const_iv (PROT_WRITE)
1125
1126 const_iv (MAP_PRIVATE)
1127 const_iv (MAP_SHARED)
1128 const_iv (MAP_FIXED)
1129 const_iv (MAP_ANONYMOUS)
1130
1131 /* linuxish */
1132 const_iv (MAP_LOCKED)
1133 const_iv (MAP_NORESERVE)
1134 const_iv (MAP_POPULATE)
1135 const_iv (MAP_NONBLOCK)
1136 const_iv (MAP_GROWSDOWN)
1137 const_iv (MAP_32BIT)
1138 const_iv (MAP_HUGETLB)
1139 const_iv (MAP_STACK)
1140
1141 const_iv (MREMAP_MAYMOVE)
1142 const_iv (MREMAP_FIXED)
1143
1144 const_iv (F_DUPFD_CLOEXEC)
1145
1146 const_iv (MSG_CMSG_CLOEXEC)
1147 const_iv (SOCK_CLOEXEC)
1148
1149 const_iv (F_OFD_GETLK)
1150 const_iv (F_OFD_SETLK)
1151 const_iv (F_OFD_GETLKW)
1152
1153 const_iv (FIFREEZE)
1154 const_iv (FITHAW)
1155 const_iv (FITRIM)
1156 const_iv (FICLONE)
1157 const_iv (FICLONERANGE)
1158 const_iv (FIDEDUPERANGE)
1159
1160 const_iv (FS_IOC_GETFLAGS)
1161 const_iv (FS_IOC_SETFLAGS)
1162 const_iv (FS_IOC_GETVERSION)
1163 const_iv (FS_IOC_SETVERSION)
1164 const_iv (FS_IOC_FIEMAP)
1165 const_iv (FS_IOC_FSGETXATTR)
1166 const_iv (FS_IOC_FSSETXATTR)
1167 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1168 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1169 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1170
1171 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1172
1173 const_iv (FS_SECRM_FL)
1174 const_iv (FS_UNRM_FL)
1175 const_iv (FS_COMPR_FL)
1176 const_iv (FS_SYNC_FL)
1177 const_iv (FS_IMMUTABLE_FL)
1178 const_iv (FS_APPEND_FL)
1179 const_iv (FS_NODUMP_FL)
1180 const_iv (FS_NOATIME_FL)
1181 const_iv (FS_DIRTY_FL)
1182 const_iv (FS_COMPRBLK_FL)
1183 const_iv (FS_NOCOMP_FL)
1184 const_iv (FS_ENCRYPT_FL)
1185 const_iv (FS_BTREE_FL)
1186 const_iv (FS_INDEX_FL)
1187 const_iv (FS_JOURNAL_DATA_FL)
1188 const_iv (FS_NOTAIL_FL)
1189 const_iv (FS_DIRSYNC_FL)
1190 const_iv (FS_TOPDIR_FL)
1191 const_iv (FS_FL_USER_MODIFIABLE)
1192
1193 const_iv (FS_XFLAG_REALTIME)
1194 const_iv (FS_XFLAG_PREALLOC)
1195 const_iv (FS_XFLAG_IMMUTABLE)
1196 const_iv (FS_XFLAG_APPEND)
1197 const_iv (FS_XFLAG_SYNC)
1198 const_iv (FS_XFLAG_NOATIME)
1199 const_iv (FS_XFLAG_NODUMP)
1200 const_iv (FS_XFLAG_RTINHERIT)
1201 const_iv (FS_XFLAG_PROJINHERIT)
1202 const_iv (FS_XFLAG_NOSYMLINKS)
1203 const_iv (FS_XFLAG_EXTSIZE)
1204 const_iv (FS_XFLAG_EXTSZINHERIT)
1205 const_iv (FS_XFLAG_NODEFRAG)
1206 const_iv (FS_XFLAG_FILESTREAM)
1207 const_iv (FS_XFLAG_DAX)
1208 const_iv (FS_XFLAG_HASATTR)
1209
1210 const_iv (FIEMAP_FLAG_SYNC)
1211 const_iv (FIEMAP_FLAG_XATTR)
1212 const_iv (FIEMAP_FLAGS_COMPAT)
1213 const_iv (FIEMAP_EXTENT_LAST)
1214 const_iv (FIEMAP_EXTENT_UNKNOWN)
1215 const_iv (FIEMAP_EXTENT_DELALLOC)
1216 const_iv (FIEMAP_EXTENT_ENCODED)
1217 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1218 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1219 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1220 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1221 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1222 const_iv (FIEMAP_EXTENT_MERGED)
1223 const_iv (FIEMAP_EXTENT_SHARED)
1224
1225 const_iv (SPLICE_F_MOVE)
1226 const_iv (SPLICE_F_NONBLOCK)
1227 const_iv (SPLICE_F_MORE)
1228 const_iv (SPLICE_F_GIFT)
1229
1230 const_iv (EFD_CLOEXEC)
1231 const_iv (EFD_NONBLOCK)
1232 const_iv (EFD_SEMAPHORE)
1233
1234 const_iv (CLOCK_REALTIME)
1235 const_iv (CLOCK_MONOTONIC)
1236 const_iv (CLOCK_BOOTTIME)
1237 const_iv (CLOCK_REALTIME_ALARM)
1238 const_iv (CLOCK_BOOTTIME_ALARM)
1239
1240 const_iv (TFD_NONBLOCK)
1241 const_iv (TFD_CLOEXEC)
1242
1243 const_iv (TFD_TIMER_ABSTIME)
1244 const_iv (TFD_TIMER_CANCEL_ON_SET)
1245
1246 /* these are libeio constants, and are independent of gendef0 */
1247 const_eio (SEEK_SET)
1248 const_eio (SEEK_CUR)
1249 const_eio (SEEK_END)
1250
1251 const_eio (MCL_FUTURE)
1252 const_eio (MCL_CURRENT)
1253
1254 const_eio (MS_ASYNC)
1255 const_eio (MS_INVALIDATE)
1256 const_eio (MS_SYNC)
1257
1258 const_eio (MT_MODIFY)
1259
1260 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1261 const_eio (SYNC_FILE_RANGE_WRITE)
1262 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1263
1264 const_eio (FALLOC_FL_KEEP_SIZE)
1265 const_eio (FALLOC_FL_PUNCH_HOLE)
1266 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1267 const_eio (FALLOC_FL_ZERO_RANGE)
1268 const_eio (FALLOC_FL_INSERT_RANGE)
1269 const_eio (FALLOC_FL_UNSHARE_RANGE)
1270
1271 const_eio (RENAME_NOREPLACE)
1272 const_eio (RENAME_EXCHANGE)
1273 const_eio (RENAME_WHITEOUT)
1274
1275 const_eio (READDIR_DENTS)
1276 const_eio (READDIR_DIRS_FIRST)
1277 const_eio (READDIR_STAT_ORDER)
1278 const_eio (READDIR_FOUND_UNKNOWN)
1279
1280 const_eio (DT_UNKNOWN)
1281 const_eio (DT_FIFO)
1282 const_eio (DT_CHR)
1283 const_eio (DT_DIR)
1284 const_eio (DT_BLK)
1285 const_eio (DT_REG)
1286 const_eio (DT_LNK)
1287 const_eio (DT_SOCK)
1288 const_eio (DT_WHT)
780 } 1289 };
781 1290
782# elif __hpux 1291 aio_stash = gv_stashpv ("IO::AIO" , 1);
783 res = sendfile (ofd, ifd, offset, count, 0, 0); 1292 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1293 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1294 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
784 1295
785# elif __solaris 1296 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
786 { 1297 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
787 struct sendfilevec vec;
788 size_t sbytes;
789 1298
790 vec.sfv_fd = ifd; 1299 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
791 vec.sfv_flag = 0;
792 vec.sfv_off = offset;
793 vec.sfv_len = count;
794 1300
795 res = sendfilev (ofd, &vec, 1, &sbytes); 1301 reinit ();
1302}
796 1303
797 if (res < 0 && sbytes) 1304void
1305reinit ()
1306 PROTOTYPE:
1307
1308void
1309max_poll_reqs (unsigned int nreqs)
1310 PROTOTYPE: $
1311 CODE:
1312 eio_set_max_poll_reqs (nreqs);
1313
1314void
1315max_poll_time (double nseconds)
1316 PROTOTYPE: $
1317 CODE:
1318 eio_set_max_poll_time (nseconds);
1319
1320void
1321min_parallel (unsigned int nthreads)
1322 PROTOTYPE: $
1323 CODE:
1324 eio_set_min_parallel (nthreads);
1325
1326void
1327max_parallel (unsigned int nthreads)
1328 PROTOTYPE: $
1329 CODE:
1330 eio_set_max_parallel (nthreads);
1331
1332void
1333max_idle (unsigned int nthreads)
1334 PROTOTYPE: $
1335 CODE:
1336 eio_set_max_idle (nthreads);
1337
1338void
1339idle_timeout (unsigned int seconds)
1340 PROTOTYPE: $
1341 CODE:
1342 eio_set_idle_timeout (seconds);
1343
1344void
1345max_outstanding (unsigned int maxreqs)
1346 PROTOTYPE: $
1347 CODE:
1348 max_outstanding = maxreqs;
1349
1350void
1351aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1352 PPCODE:
1353{
1354 dREQ;
1355
1356 req->type = EIO_WD_OPEN;
1357 req_set_path1 (req, pathname);
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1364 PPCODE:
1365{
1366 dREQ;
1367
1368 req->type = EIO_OPEN;
1369 req_set_path1 (req, pathname);
1370 req->int1 = flags;
1371 req->int2 = mode;
1372
1373 REQ_SEND;
1374}
1375
1376void
1377aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1378 ALIAS:
1379 aio_fsync = EIO_FSYNC
1380 aio_fdatasync = EIO_FDATASYNC
1381 aio_syncfs = EIO_SYNCFS
1382 PPCODE:
1383{
1384 int fd = s_fileno_croak (fh, 0);
1385 dREQ;
1386
1387 req->type = ix;
1388 req->sv1 = newSVsv (fh);
1389 req->int1 = fd;
1390
1391 REQ_SEND;
1392}
1393
1394void
1395aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1396 PPCODE:
1397{
1398 int fd = s_fileno_croak (fh, 0);
1399 dREQ;
1400
1401 req->type = EIO_SYNC_FILE_RANGE;
1402 req->sv1 = newSVsv (fh);
1403 req->int1 = fd;
1404 req->offs = offset;
798 res = sbytes; 1405 req->size = nbytes;
799 } 1406 req->int2 = flags;
800 1407
801# endif 1408 REQ_SEND;
1409}
1410
1411void
1412aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1413 PPCODE:
1414{
1415 int fd = s_fileno_croak (fh, 0);
1416 dREQ;
1417
1418 req->type = EIO_FALLOCATE;
1419 req->sv1 = newSVsv (fh);
1420 req->int1 = fd;
1421 req->int2 = mode;
1422 req->offs = offset;
1423 req->size = len;
1424
1425 REQ_SEND;
1426}
1427
1428void
1429aio_close (SV *fh, SV *callback = &PL_sv_undef)
1430 PPCODE:
1431{
1432 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1433 int fd = s_fileno_croak (fh, 0);
1434 dREQ;
1435
1436 if (expect_false (close_fd < 0))
1437 {
1438 int pipefd [2];
1439
1440 if (
1441#ifdef _WIN32
1442 _pipe (pipefd, 1, _O_BINARY) < 0
802#else 1443#else
803 res = -1; 1444 pipe (pipefd) < 0
804 errno = ENOSYS; 1445 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
805#endif 1446#endif
806 1447 || close (pipefd [1]) < 0
807 if (res < 0
808 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
809#if __solaris
810 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
811#endif
812 )
813 )
814 {
815 /* emulate sendfile. this is a major pain in the ass */
816 dBUF;
817
818 res = 0;
819
820 while (count)
821 {
822 ssize_t cnt;
823
824 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
825
826 if (cnt <= 0)
827 { 1448 )
828 if (cnt && !res) res = -1; 1449 abort (); /*D*/
829 break;
830 }
831 1450
832 cnt = write (ofd, aio_buf, cnt); 1451 close_fd = pipefd [0];
833
834 if (cnt <= 0)
835 {
836 if (cnt && !res) res = -1;
837 break;
838 }
839
840 offset += cnt;
841 res += cnt;
842 count -= cnt;
843 }
844 }
845
846 return res;
847}
848
849/* read a full directory */
850static void scandir_ (aio_req req, worker *self)
851{
852 DIR *dirp;
853 union
854 {
855 struct dirent d;
856 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
857 } *u;
858 struct dirent *entp;
859 char *name, *names;
860 int memlen = 4096;
861 int memofs = 0;
862 int res = 0;
863 int errorno;
864
865 LOCK (wrklock);
866 self->dirp = dirp = opendir (req->dataptr);
867 self->dbuf = u = malloc (sizeof (*u));
868 UNLOCK (wrklock);
869
870 req->data2ptr = names = malloc (memlen);
871
872 if (dirp && u && names)
873 for (;;)
874 {
875 errno = 0;
876 readdir_r (dirp, &u->d, &entp);
877
878 if (!entp)
879 break;
880
881 name = entp->d_name;
882
883 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
884 {
885 int len = strlen (name) + 1;
886
887 res++;
888
889 while (memofs + len > memlen)
890 {
891 memlen *= 2;
892 LOCK (wrklock);
893 req->data2ptr = names = realloc (names, memlen);
894 UNLOCK (wrklock);
895
896 if (!names)
897 break;
898 }
899
900 memcpy (names + memofs, name, len);
901 memofs += len;
902 } 1452 }
903 }
904 1453
905 if (errno) 1454 req->type = EIO_DUP2;
906 res = -1; 1455 req->int1 = close_fd;
907 1456 req->sv2 = newSVsv (fh);
908 req->result = res; 1457 req->int2 = fd;
909}
910 1458
911/*****************************************************************************/ 1459 REQ_SEND;
912
913static void *aio_proc (void *thr_arg)
914{
915 aio_req req;
916 int type;
917 worker *self = (worker *)thr_arg;
918
919 do
920 {
921 LOCK (reqlock);
922
923 for (;;)
924 {
925 self->req = req = reqq_shift (&req_queue);
926
927 if (req)
928 break;
929
930 pthread_cond_wait (&reqwait, &reqlock);
931 }
932
933 UNLOCK (reqlock);
934
935 errno = 0; /* strictly unnecessary */
936 type = req->type; /* remember type for QUIT check */
937
938 if (!(req->flags & FLAG_CANCELLED))
939 switch (type)
940 {
941 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
942 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
943
944 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
945 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
946
947 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
948 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
949 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
950
951 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
952 case REQ_CLOSE: req->result = close (req->fd); break;
953 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
954 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
955 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
956 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
957 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
958
959 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
960 case REQ_FSYNC: req->result = fsync (req->fd); break;
961 case REQ_READDIR: scandir_ (req, self); break;
962
963 case REQ_BUSY:
964 {
965 struct timeval tv;
966
967 tv.tv_sec = req->fd;
968 tv.tv_usec = req->fd2;
969
970 req->result = select (0, 0, 0, 0, &tv);
971 }
972
973 case REQ_GROUP:
974 case REQ_NOP:
975 case REQ_QUIT:
976 break;
977
978 default:
979 req->result = ENOSYS;
980 break;
981 }
982
983 req->errorno = errno;
984
985 LOCK (reslock);
986
987 if (!reqq_push (&res_queue, req))
988 /* write a dummy byte to the pipe so fh becomes ready */
989 write (respipe [1], &respipe, 1);
990
991 self->req = 0;
992 worker_clear (self);
993
994 UNLOCK (reslock);
995 }
996 while (type != REQ_QUIT);
997
998 LOCK (wrklock);
999 worker_free (self);
1000 UNLOCK (wrklock);
1001
1002 return 0;
1003} 1460}
1004 1461
1005/*****************************************************************************/
1006
1007static void atfork_prepare (void)
1008{
1009 LOCK (wrklock);
1010 LOCK (reqlock);
1011 LOCK (reslock);
1012#if !HAVE_PREADWRITE
1013 LOCK (preadwritelock);
1014#endif
1015#if !HAVE_READDIR_R
1016 LOCK (readdirlock);
1017#endif
1018}
1019
1020static void atfork_parent (void)
1021{
1022#if !HAVE_READDIR_R
1023 UNLOCK (readdirlock);
1024#endif
1025#if !HAVE_PREADWRITE
1026 UNLOCK (preadwritelock);
1027#endif
1028 UNLOCK (reslock);
1029 UNLOCK (reqlock);
1030 UNLOCK (wrklock);
1031}
1032
1033static void atfork_child (void)
1034{
1035 aio_req prv;
1036
1037 while (prv = reqq_shift (&req_queue))
1038 req_free (prv);
1039
1040 while (prv = reqq_shift (&res_queue))
1041 req_free (prv);
1042
1043 while (wrk_first.next != &wrk_first)
1044 {
1045 worker *wrk = wrk_first.next;
1046
1047 if (wrk->req)
1048 req_free (wrk->req);
1049
1050 worker_clear (wrk);
1051 worker_free (wrk);
1052 }
1053
1054 started = 0;
1055 nreqs = 0;
1056
1057 close (respipe [0]);
1058 close (respipe [1]);
1059 create_pipe ();
1060
1061 atfork_parent ();
1062}
1063
1064#define dREQ \
1065 aio_req req; \
1066 int req_pri = next_pri; \
1067 next_pri = DEFAULT_PRI + PRI_BIAS; \
1068 \
1069 if (SvOK (callback) && !SvROK (callback)) \
1070 croak ("callback must be undef or of reference type"); \
1071 \
1072 Newz (0, req, 1, aio_cb); \
1073 if (!req) \
1074 croak ("out of memory during aio_req allocation"); \
1075 \
1076 req->callback = newSVsv (callback); \
1077 req->pri = req_pri
1078
1079#define REQ_SEND \
1080 req_send (req); \
1081 \
1082 if (GIMME_V != G_VOID) \
1083 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1084
1085MODULE = IO::AIO PACKAGE = IO::AIO
1086
1087PROTOTYPES: ENABLE
1088
1089BOOT:
1090{
1091 HV *stash = gv_stashpv ("IO::AIO", 1);
1092 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1093 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1094 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1095
1096 create_pipe ();
1097 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098}
1099
1100void 1462void
1101min_parallel (nthreads) 1463aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1102 int nthreads 1464 PPCODE:
1103 PROTOTYPE: $
1104
1105void
1106max_parallel (nthreads)
1107 int nthreads
1108 PROTOTYPE: $
1109
1110void
1111aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1112 SV * pathname
1113 int flags
1114 int mode
1115 SV * callback
1116 PROTOTYPE: $$$;$
1117 PPCODE:
1118{ 1465{
1466 int fd = s_fileno_croak (fh, 0);
1119 dREQ; 1467 dREQ;
1120 1468
1121 req->type = REQ_OPEN; 1469 req->type = EIO_SEEK;
1122 req->data = newSVsv (pathname); 1470 req->sv1 = newSVsv (fh);
1123 req->dataptr = SvPVbyte_nolen (req->data); 1471 req->int1 = fd;
1124 req->fd = flags; 1472 req->offs = SvVAL64 (offset);
1125 req->mode = mode; 1473 req->int2 = whence;
1126 1474
1127 REQ_SEND; 1475 REQ_SEND;
1128} 1476}
1129 1477
1130void 1478void
1131aio_close (fh,callback=&PL_sv_undef) 1479aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1132 SV * fh
1133 SV * callback
1134 PROTOTYPE: $;$
1135 ALIAS: 1480 ALIAS:
1136 aio_close = REQ_CLOSE
1137 aio_fsync = REQ_FSYNC
1138 aio_fdatasync = REQ_FDATASYNC
1139 PPCODE:
1140{
1141 dREQ;
1142
1143 req->type = ix;
1144 req->fh = newSVsv (fh);
1145 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1146
1147 REQ_SEND (req);
1148}
1149
1150void
1151aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1152 SV * fh
1153 UV offset
1154 UV length
1155 SV * data
1156 UV dataoffset
1157 SV * callback
1158 ALIAS:
1159 aio_read = REQ_READ 1481 aio_read = EIO_READ
1160 aio_write = REQ_WRITE 1482 aio_write = EIO_WRITE
1161 PROTOTYPE: $$$$$;$
1162 PPCODE: 1483 PPCODE:
1163{ 1484{
1164 aio_req req;
1165 STRLEN svlen; 1485 STRLEN svlen;
1486 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1166 char *svptr = SvPVbyte (data, svlen); 1487 char *svptr = SvPVbyte (data, svlen);
1167 1488 UV len = SvUV (length);
1168 SvUPGRADE (data, SVt_PV);
1169 SvPOK_on (data);
1170 1489
1171 if (dataoffset < 0) 1490 if (dataoffset < 0)
1172 dataoffset += svlen; 1491 dataoffset += svlen;
1173 1492
1174 if (dataoffset < 0 || dataoffset > svlen) 1493 if (dataoffset < 0 || dataoffset > svlen)
1175 croak ("data offset outside of string"); 1494 croak ("dataoffset outside of data scalar");
1176 1495
1177 if (ix == REQ_WRITE) 1496 if (ix == EIO_WRITE)
1178 { 1497 {
1179 /* write: check length and adjust. */ 1498 /* write: check length and adjust. */
1180 if (length < 0 || length + dataoffset > svlen) 1499 if (!SvOK (length) || len + dataoffset > svlen)
1181 length = svlen - dataoffset; 1500 len = svlen - dataoffset;
1182 } 1501 }
1183 else 1502 else
1184 { 1503 {
1185 /* read: grow scalar as necessary */ 1504 /* read: check type and grow scalar as necessary */
1505 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1186 svptr = SvGROW (data, length + dataoffset); 1506 svptr = sv_grow (data, len + dataoffset + 1);
1507 else if (SvCUR (data) < len + dataoffset)
1508 croak ("length + dataoffset outside of scalar, and cannot grow");
1187 } 1509 }
1188
1189 if (length < 0)
1190 croak ("length must not be negative");
1191 1510
1192 { 1511 {
1193 dREQ; 1512 dREQ;
1194 1513
1195 req->type = ix; 1514 req->type = ix;
1196 req->fh = newSVsv (fh); 1515 req->sv1 = newSVsv (fh);
1197 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1516 req->int1 = fd;
1198 : IoOFP (sv_2io (fh))); 1517 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199 req->offset = offset; 1518 req->size = len;
1200 req->length = length;
1201 req->data = SvREFCNT_inc (data); 1519 req->sv2 = SvREFCNT_inc (data);
1202 req->dataptr = (char *)svptr + dataoffset; 1520 req->ptr2 = (char *)svptr + dataoffset;
1521 req->stroffset = dataoffset;
1203 1522
1204 if (!SvREADONLY (data)) 1523 if (!SvREADONLY (data))
1205 { 1524 {
1206 SvREADONLY_on (data); 1525 SvREADONLY_on (data);
1207 req->data2ptr = (void *)data; 1526 req->flags |= FLAG_SV2_RO_OFF;
1208 } 1527 }
1209 1528
1210 REQ_SEND; 1529 REQ_SEND;
1211 } 1530 }
1212} 1531}
1213 1532
1214void 1533void
1215aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1534aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1216 SV * out_fh 1535 ALIAS:
1217 SV * in_fh 1536 aio_ioctl = EIO_IOCTL
1218 UV in_offset 1537 aio_fcntl = EIO_FCNTL
1219 UV length
1220 SV * callback
1221 PROTOTYPE: $$$$;$
1222 PPCODE: 1538 PPCODE:
1223{ 1539{
1224 dREQ; 1540 int fd = s_fileno_croak (fh, 0);
1541 char *svptr;
1225 1542
1226 req->type = REQ_SENDFILE; 1543 if (SvPOK (arg) || !SvNIOK (arg))
1227 req->fh = newSVsv (out_fh);
1228 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1229 req->fh2 = newSVsv (in_fh);
1230 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1231 req->offset = in_offset;
1232 req->length = length;
1233
1234 REQ_SEND;
1235}
1236
1237void
1238aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1239 SV * fh
1240 UV offset
1241 IV length
1242 SV * callback
1243 PROTOTYPE: $$$;$
1244 PPCODE:
1245{
1246 dREQ;
1247
1248 req->type = REQ_READAHEAD;
1249 req->fh = newSVsv (fh);
1250 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1251 req->offset = offset;
1252 req->length = length;
1253
1254 REQ_SEND;
1255}
1256
1257void
1258aio_stat (fh_or_path,callback=&PL_sv_undef)
1259 SV * fh_or_path
1260 SV * callback
1261 ALIAS:
1262 aio_stat = REQ_STAT
1263 aio_lstat = REQ_LSTAT
1264 PPCODE:
1265{
1266 dREQ;
1267
1268 New (0, req->statdata, 1, Stat_t);
1269 if (!req->statdata)
1270 { 1544 {
1271 req_free (req); 1545 STRLEN svlen;
1272 croak ("out of memory during aio_req->statdata allocation"); 1546 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1273 } 1547#ifdef IOCPARM_LEN
1548 STRLEN need = IOCPARM_LEN (request);
1549#else
1550 STRLEN need = 256;
1551#endif
1274 1552
1275 if (SvPOK (fh_or_path)) 1553 if (svlen < need)
1276 { 1554 svptr = SvGROW (arg, need);
1277 req->type = ix;
1278 req->data = newSVsv (fh_or_path);
1279 req->dataptr = SvPVbyte_nolen (req->data);
1280 } 1555 }
1281 else 1556 else
1557 svptr = (char *)SvIV (arg);
1558
1282 { 1559 {
1560 dREQ;
1561
1283 req->type = REQ_FSTAT; 1562 req->type = ix;
1284 req->fh = newSVsv (fh_or_path); 1563 req->sv1 = newSVsv (fh);
1285 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1564 req->int1 = fd;
1565 req->int2 = (long)request;
1566 req->sv2 = SvREFCNT_inc (arg);
1567 req->ptr2 = svptr;
1568
1569 REQ_SEND;
1286 } 1570 }
1571}
1572
1573void
1574aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1575 ALIAS:
1576 aio_readlink = EIO_READLINK
1577 aio_realpath = EIO_REALPATH
1578 PPCODE:
1579{
1580 dREQ;
1581
1582 req->type = ix;
1583 req_set_path1 (req, pathname);
1287 1584
1288 REQ_SEND; 1585 REQ_SEND;
1289} 1586}
1290 1587
1291void 1588void
1292aio_unlink (pathname,callback=&PL_sv_undef) 1589aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1293 SV * pathname 1590 PPCODE:
1294 SV * callback 1591{
1592 int ifd = s_fileno_croak (in_fh , 0);
1593 int ofd = s_fileno_croak (out_fh, 1);
1594 dREQ;
1595
1596 req->type = EIO_SENDFILE;
1597 req->sv1 = newSVsv (out_fh);
1598 req->int1 = ofd;
1599 req->sv2 = newSVsv (in_fh);
1600 req->int2 = ifd;
1601 req->offs = in_offset;
1602 req->size = length;
1603
1604 REQ_SEND;
1605}
1606
1607void
1608aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1609 PPCODE:
1610{
1611 int fd = s_fileno_croak (fh, 0);
1612 dREQ;
1613
1614 req->type = EIO_READAHEAD;
1615 req->sv1 = newSVsv (fh);
1616 req->int1 = fd;
1617 req->offs = offset;
1618 req->size = length;
1619
1620 REQ_SEND;
1621}
1622
1623void
1624aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1295 ALIAS: 1625 ALIAS:
1626 aio_stat = EIO_STAT
1627 aio_lstat = EIO_LSTAT
1628 aio_statvfs = EIO_STATVFS
1629 PPCODE:
1630{
1631 dREQ;
1632
1633 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1634
1635 REQ_SEND;
1636}
1637
1638void
1639st_xtime ()
1640 ALIAS:
1641 st_atime = 1
1642 st_mtime = 2
1643 st_ctime = 4
1644 st_xtime = 7
1645 PPCODE:
1646 EXTEND (SP, 3);
1647 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1648 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1649 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1650
1651void
1652st_xtimensec ()
1653 ALIAS:
1654 st_atimensec = 1
1655 st_mtimensec = 2
1656 st_ctimensec = 4
1657 st_xtimensec = 7
1658 PPCODE:
1659 EXTEND (SP, 3);
1660 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1661 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1662 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1663
1664UV
1665major (UV dev)
1666 ALIAS:
1667 minor = 1
1668 CODE:
1669 RETVAL = ix ? minor (dev) : major (dev);
1670 OUTPUT:
1671 RETVAL
1672
1673UV
1674makedev (UV maj, UV min)
1675 CODE:
1676 RETVAL = makedev (maj, min);
1677 OUTPUT:
1678 RETVAL
1679
1680void
1681aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1682 PPCODE:
1683{
1684 dREQ;
1685
1686 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1687 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1688 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1689
1690 REQ_SEND;
1691}
1692
1693void
1694aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1695 PPCODE:
1696{
1697 dREQ;
1698
1699 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1700 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1701
1702 REQ_SEND;
1703}
1704
1705void
1706aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1707 PPCODE:
1708{
1709 dREQ;
1710
1711 req->int2 = mode;
1712 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1713
1714 REQ_SEND;
1715}
1716
1717void
1718aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1719 PPCODE:
1720{
1721 dREQ;
1722
1723 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1724 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1725 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1726
1727 REQ_SEND;
1728}
1729
1730void
1731aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1732 PPCODE:
1733{
1734 dREQ;
1735
1736 req->type = EIO_READDIR;
1737 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1738
1739 if (flags & EIO_READDIR_DENTS)
1740 req->int1 |= EIO_READDIR_CUSTOM2;
1741
1742 req_set_path1 (req, pathname);
1743
1744 REQ_SEND;
1745}
1746
1747void
1748aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1749 PPCODE:
1750{
1751 dREQ;
1752
1753 req->type = EIO_MKDIR;
1754 req->int2 = mode;
1755 req_set_path1 (req, pathname);
1756
1757 REQ_SEND;
1758}
1759
1760void
1761aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1762 ALIAS:
1296 aio_unlink = REQ_UNLINK 1763 aio_unlink = EIO_UNLINK
1297 aio_rmdir = REQ_RMDIR 1764 aio_rmdir = EIO_RMDIR
1298 aio_readdir = REQ_READDIR 1765 aio_readdir = EIO_READDIR
1299 PPCODE: 1766 PPCODE:
1300{ 1767{
1301 dREQ; 1768 dREQ;
1302 1769
1303 req->type = ix; 1770 req->type = ix;
1304 req->data = newSVsv (pathname); 1771 req_set_path1 (req, pathname);
1305 req->dataptr = SvPVbyte_nolen (req->data); 1772
1306
1307 REQ_SEND; 1773 REQ_SEND;
1308} 1774}
1309 1775
1310void 1776void
1311aio_link (oldpath,newpath,callback=&PL_sv_undef) 1777aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1312 SV * oldpath
1313 SV * newpath
1314 SV * callback
1315 ALIAS: 1778 ALIAS:
1316 aio_link = REQ_LINK 1779 aio_link = EIO_LINK
1317 aio_symlink = REQ_SYMLINK 1780 aio_symlink = EIO_SYMLINK
1318 aio_rename = REQ_RENAME 1781 aio_rename = EIO_RENAME
1319 PPCODE: 1782 PPCODE:
1320{ 1783{
1784 eio_wd wd2 = 0;
1321 dREQ; 1785 dREQ;
1322 1786
1323 req->type = ix; 1787 req->type = ix;
1324 req->fh = newSVsv (oldpath); 1788 req_set_path1 (req, oldpath);
1325 req->data2ptr = SvPVbyte_nolen (req->fh); 1789 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1326 req->data = newSVsv (newpath); 1790 req->int3 = (long)wd2;
1327 req->dataptr = SvPVbyte_nolen (req->data);
1328 1791
1329 REQ_SEND; 1792 REQ_SEND;
1330} 1793}
1331 1794
1332void 1795void
1333aio_busy (delay,callback=&PL_sv_undef) 1796aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1334 double delay
1335 SV * callback
1336 PPCODE: 1797 PPCODE:
1337{ 1798{
1799 eio_wd wd2 = 0;
1338 dREQ; 1800 dREQ;
1339 1801
1340 req->type = REQ_BUSY; 1802 req->type = EIO_RENAME;
1341 req->fd = delay < 0. ? 0 : delay; 1803 req_set_path1 (req, oldpath);
1342 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1804 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1343 1805 req->int2 = flags;
1806 req->int3 = (long)wd2;
1807
1344 REQ_SEND; 1808 REQ_SEND;
1345} 1809}
1346 1810
1347void 1811void
1348aio_group (callback=&PL_sv_undef) 1812aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1349 SV * callback 1813 PPCODE:
1350 PROTOTYPE: ;$ 1814{
1815 dREQ;
1816
1817 req->type = EIO_MKNOD;
1818 req->int2 = (mode_t)mode;
1819 req->offs = dev;
1820 req_set_path1 (req, pathname);
1821
1822 REQ_SEND;
1823}
1824
1825void
1826aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1827 ALIAS:
1828 aio_mtouch = EIO_MTOUCH
1829 aio_msync = EIO_MSYNC
1351 PPCODE: 1830 PPCODE:
1352{ 1831{
1832 STRLEN svlen;
1833 char *svptr = SvPVbyte (data, svlen);
1834 UV len = SvUV (length);
1835
1836 if (flags < 0)
1837 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1838
1839 if (offset < 0)
1840 offset += svlen;
1841
1842 if (offset < 0 || offset > svlen)
1843 croak ("offset outside of scalar");
1844
1845 if (!SvOK (length) || len + offset > svlen)
1846 len = svlen - offset;
1847
1848 {
1849 dREQ;
1850
1851 req->type = ix;
1852 req->sv2 = SvREFCNT_inc (data);
1853 req->ptr2 = (char *)svptr + offset;
1854 req->size = len;
1855 req->int1 = flags;
1856
1857 REQ_SEND;
1858 }
1859}
1860
1861void
1862aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1863 PPCODE:
1864{
1865 STRLEN svlen;
1866 char *svptr = SvPVbyte (data, svlen);
1867 UV len = SvUV (length);
1868
1869 if (offset < 0)
1870 offset += svlen;
1871
1872 if (offset < 0 || offset > svlen)
1873 croak ("offset outside of scalar");
1874
1875 if (!SvOK (length) || len + offset > svlen)
1876 len = svlen - offset;
1877
1878 {
1879 dREQ;
1880
1881 req->type = EIO_MLOCK;
1882 req->sv2 = SvREFCNT_inc (data);
1883 req->ptr2 = (char *)svptr + offset;
1884 req->size = len;
1885
1886 REQ_SEND;
1887 }
1888}
1889
1890void
1891aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1892 PPCODE:
1893{
1894 dREQ;
1895
1896 req->type = EIO_MLOCKALL;
1897 req->int1 = flags;
1898
1899 REQ_SEND;
1900}
1901
1902void
1903aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1904 PPCODE:
1905{
1906 int fd = s_fileno_croak (fh, 0);
1353 dREQ; 1907 dREQ;
1354 1908
1355 req->type = REQ_GROUP; 1909 req->type = EIO_CUSTOM;
1356 req_send (req); 1910 req->sv1 = newSVsv (fh);
1911 req->int1 = fd;
1357 1912
1358 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1913 req->feed = fiemap;
1359} 1914#if HAVE_FIEMAP
1915 /* keep our fingers crossed that the next two types are 64 bit */
1916 req->offs = start;
1917 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1918 req->int2 = flags;
1919 req->int3 = SvOK (count) ? SvIV (count) : -1;
1920#endif
1360 1921
1922 REQ_SEND;
1923}
1924
1361void 1925void
1362aio_nop (callback=&PL_sv_undef) 1926aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1363 SV * callback 1927 PPCODE:
1928{
1929 char *svptr = 0;
1930
1931 sv_clear_foreign (data);
1932
1933 if (length) /* known length, directly read into scalar */
1934 {
1935 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1936 svptr = sv_grow (data, length + 1);
1937 else if (SvCUR (data) < length)
1938 croak ("length outside of scalar, and cannot grow");
1939 else
1940 svptr = SvPVbyte_nolen (data);
1941 }
1942
1943 {
1944 dREQ;
1945
1946 req->type = EIO_SLURP;
1947 req_set_path1 (req, pathname);
1948 req->offs = offset;
1949 req->size = length;
1950 req->sv2 = SvREFCNT_inc (data);
1951 req->ptr2 = svptr;
1952
1953 if (!SvREADONLY (data))
1954 {
1955 SvREADONLY_on (data);
1956 req->flags |= FLAG_SV2_RO_OFF;
1957 }
1958
1959 REQ_SEND;
1960 }
1961}
1962
1963void
1964aio_busy (double delay, SV *callback = &PL_sv_undef)
1364 PPCODE: 1965 PPCODE:
1365{ 1966{
1366 dREQ; 1967 dREQ;
1367 1968
1368 req->type = REQ_NOP; 1969 req->type = EIO_BUSY;
1970 req->nv1 = delay < 0. ? 0. : delay;
1369 1971
1370 REQ_SEND; 1972 REQ_SEND;
1371} 1973}
1372 1974
1373void 1975void
1374aioreq_pri (int pri = DEFAULT_PRI) 1976aio_group (SV *callback = &PL_sv_undef)
1375 CODE: 1977 PPCODE:
1978{
1979 dREQ;
1980
1981 req->type = EIO_GROUP;
1982
1983 PUTBACK;
1984 req_submit (req);
1985 SPAGAIN;
1986
1987 XPUSHs (req_sv (req, aio_grp_stash));
1988}
1989
1990void
1991aio_nop (SV *callback = &PL_sv_undef)
1992 ALIAS:
1993 aio_nop = EIO_NOP
1994 aio_sync = EIO_SYNC
1995 PPCODE:
1996{
1997 dREQ;
1998
1999 req->type = ix;
2000
2001 REQ_SEND;
2002}
2003
2004int
2005aioreq_pri (int pri = NO_INIT)
2006 CODE:
2007 RETVAL = next_pri;
2008 if (items > 0)
2009 {
1376 if (pri < PRI_MIN) pri = PRI_MIN; 2010 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1377 if (pri > PRI_MAX) pri = PRI_MAX; 2011 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1378 next_pri = pri + PRI_BIAS; 2012 next_pri = pri;
2013 }
2014 OUTPUT:
2015 RETVAL
1379 2016
1380void 2017void
1381aioreq_nice (int nice = 0) 2018aioreq_nice (int nice = 0)
1382 CODE: 2019 CODE:
1383 nice = next_pri - nice; 2020 nice = next_pri - nice;
1384 if (nice < PRI_MIN) nice = PRI_MIN; 2021 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1385 if (nice > PRI_MAX) nice = PRI_MAX; 2022 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1386 next_pri = nice + PRI_BIAS; 2023 next_pri = nice;
1387 2024
1388void 2025void
1389flush () 2026flush ()
1390 PROTOTYPE:
1391 CODE: 2027 CODE:
1392 while (nreqs) 2028 while (eio_nreqs ())
1393 { 2029 {
1394 poll_wait (); 2030 poll_wait ();
1395 poll_cb (); 2031 poll_cb ();
1396 } 2032 }
1397 2033
1398void 2034int
1399poll() 2035poll ()
1400 PROTOTYPE:
1401 CODE: 2036 CODE:
1402 if (nreqs)
1403 {
1404 poll_wait (); 2037 poll_wait ();
1405 poll_cb (); 2038 RETVAL = poll_cb ();
1406 }
1407
1408int
1409poll_fileno()
1410 PROTOTYPE:
1411 CODE:
1412 RETVAL = respipe [0];
1413 OUTPUT: 2039 OUTPUT:
1414 RETVAL 2040 RETVAL
1415 2041
1416int 2042int
2043poll_fileno ()
2044 CODE:
2045 RETVAL = s_epipe_fd (&respipe);
2046 OUTPUT:
2047 RETVAL
2048
2049int
1417poll_cb(...) 2050poll_cb (...)
1418 PROTOTYPE: 2051 PROTOTYPE:
1419 CODE: 2052 CODE:
1420 RETVAL = poll_cb (); 2053 RETVAL = poll_cb ();
1421 OUTPUT: 2054 OUTPUT:
1422 RETVAL 2055 RETVAL
1423 2056
1424void 2057void
1425poll_wait() 2058poll_wait ()
1426 PROTOTYPE:
1427 CODE: 2059 CODE:
1428 if (nreqs)
1429 poll_wait (); 2060 poll_wait ();
1430 2061
1431int 2062int
1432nreqs() 2063nreqs ()
1433 PROTOTYPE:
1434 CODE: 2064 CODE:
1435 RETVAL = nreqs; 2065 RETVAL = eio_nreqs ();
1436 OUTPUT: 2066 OUTPUT:
1437 RETVAL 2067 RETVAL
1438 2068
2069int
2070nready ()
2071 CODE:
2072 RETVAL = eio_nready ();
2073 OUTPUT:
2074 RETVAL
2075
2076int
2077npending ()
2078 CODE:
2079 RETVAL = eio_npending ();
2080 OUTPUT:
2081 RETVAL
2082
2083int
2084nthreads ()
2085 CODE:
2086 RETVAL = eio_nthreads ();
2087 OUTPUT:
2088 RETVAL
2089
2090int
2091fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2092 CODE:
2093 RETVAL = posix_fadvise (fh, offset, length, advice);
2094 OUTPUT:
2095 RETVAL
2096
2097IV
2098sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2099 CODE:
2100 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2101 OUTPUT:
2102 RETVAL
2103
2104void
2105mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2106 PPCODE:
2107 sv_clear_foreign (scalar);
2108{
2109 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2110 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2111 if (addr == (void *)-1)
2112 XSRETURN_NO;
2113
2114 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2115
2116 if (!(prot & PROT_WRITE))
2117 SvREADONLY_on (scalar);
2118
2119 XSRETURN_YES;
2120}
2121
2122void
2123munmap (SV *scalar)
2124 CODE:
2125 sv_clear_foreign (scalar);
2126
2127SV *
2128mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2129 CODE:
2130{
2131 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2132 void *new;
2133
2134 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2135 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2136
2137 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2138
2139 RETVAL = &PL_sv_no;
2140
2141 if (new != (void *)-1)
2142 {
2143 RETVAL = new == (void *)mg->mg_ptr
2144 ? newSVpvn ("0 but true", 10)
2145 : &PL_sv_yes;
2146
2147 mg->mg_ptr = (char *)new;
2148 mg->mg_obj = (SV *)new_length;
2149
2150 SvPVX (scalar) = mg->mg_ptr;
2151 SvCUR_set (scalar, new_length);
2152 }
2153}
2154 OUTPUT:
2155 RETVAL
2156
2157int
2158madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2159 ALIAS:
2160 mprotect = 1
2161 CODE:
2162{
2163 STRLEN svlen;
2164 void *addr = SvPVbyte (scalar, svlen);
2165 STRLEN len = SvUV (length);
2166
2167 if (offset < 0)
2168 offset += svlen;
2169
2170 if (offset < 0 || offset > svlen)
2171 croak ("offset outside of scalar");
2172
2173 if (!SvOK (length) || len + offset > svlen)
2174 len = svlen - offset;
2175
2176 addr = (void *)(((intptr_t)addr) + offset);
2177 eio_page_align (&addr, &len);
2178
2179 switch (ix)
2180 {
2181 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2182 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2183 }
2184}
2185 OUTPUT:
2186 RETVAL
2187
2188int
2189munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2190 CODE:
2191{
2192 STRLEN svlen;
2193 void *addr = SvPVbyte (scalar, svlen);
2194 size_t len = SvUV (length);
2195
2196 if (offset < 0)
2197 offset += svlen;
2198
2199 if (offset < 0 || offset > svlen)
2200 croak ("offset outside of scalar");
2201
2202 if (!SvOK (length) || len + offset > svlen)
2203 len = svlen - offset;
2204
2205 addr = (void *)(((intptr_t)addr) + offset);
2206 eio_page_align (&addr, &len);
2207#if _POSIX_MEMLOCK_RANGE
2208 RETVAL = munlock (addr, len);
2209#else
2210 RETVAL = EIO_ENOSYS ();
2211#endif
2212}
2213 OUTPUT:
2214 RETVAL
2215
2216int
2217munlockall ()
2218 CODE:
2219#if _POSIX_MEMLOCK
2220 munlockall ();
2221#else
2222 RETVAL = EIO_ENOSYS ();
2223#endif
2224 OUTPUT:
2225 RETVAL
2226
2227int
2228splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2229 CODE:
2230{
2231#if HAVE_LINUX_SPLICE
2232 loff_t off_in_, off_out_;
2233 RETVAL = splice (
2234 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2235 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2236 length, flags
2237 );
2238#else
2239 RETVAL = EIO_ENOSYS ();
2240#endif
2241}
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2247 CODE:
2248#if HAVE_LINUX_SPLICE
2249 RETVAL = tee (rfh, wfh, length, flags);
2250#else
2251 RETVAL = EIO_ENOSYS ();
2252#endif
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257pipesize (aio_rfd rfh, int new_size = -1)
2258 PROTOTYPE: $;$
2259 CODE:
2260#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2261 if (new_size >= 0)
2262 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2263 else
2264 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2265#else
2266 errno = ENOSYS;
2267 RETVAL = -1;
2268#endif
2269 OUTPUT:
2270 RETVAL
2271
2272void
2273pipe2 (int flags = 0)
2274 PROTOTYPE: ;$
2275 PPCODE:
2276{
2277 int fd[2];
2278 int res;
2279
2280 if (flags)
2281#if HAVE_PIPE2
2282 res = pipe2 (fd, flags);
2283#else
2284 res = (errno = ENOSYS, -1);
2285#endif
2286 else
2287 res = pipe (fd);
2288
2289 if (!res)
2290 {
2291 EXTEND (SP, 2);
2292 PUSHs (newmortalFH (fd[0], O_RDONLY));
2293 PUSHs (newmortalFH (fd[1], O_WRONLY));
2294 }
2295}
2296
2297void
2298eventfd (unsigned int initval = 0, int flags = 0)
2299 PPCODE:
2300{
2301 int fd;
2302#if HAVE_EVENTFD
2303 fd = eventfd (initval, flags);
2304#else
2305 fd = (errno = ENOSYS, -1);
2306#endif
2307
2308 XPUSHs (newmortalFH (fd, O_RDWR));
2309}
2310
2311void
2312timerfd_create (int clockid, int flags = 0)
2313 PPCODE:
2314{
2315 int fd;
2316#if HAVE_TIMERFD
2317 fd = timerfd_create (clockid, flags);
2318#else
2319 fd = (errno = ENOSYS, -1);
2320#endif
2321
2322 XPUSHs (newmortalFH (fd, O_RDWR));
2323}
2324
2325void
2326timerfd_settime (SV *fh, int flags, NV interval, NV value)
2327 PPCODE:
2328{
2329 int fd = s_fileno_croak (fh, 0);
2330#if HAVE_TIMERFD
2331 int res;
2332 struct itimerspec its, ots;
2333
2334 ts_set (&its.it_interval, interval);
2335 ts_set (&its.it_value , value);
2336 res = timerfd_settime (fd, flags, &its, &ots);
2337
2338 if (!res)
2339 {
2340 EXTEND (SP, 2);
2341 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2342 PUSHs (newSVnv (ts_get (&ots.it_value)));
2343 }
2344#else
2345 errno = ENOSYS;
2346#endif
2347}
2348
2349void
2350timerfd_gettime (SV *fh)
2351 PPCODE:
2352{
2353 int fd = s_fileno_croak (fh, 0);
2354#if HAVE_TIMERFD
2355 int res;
2356 struct itimerspec ots;
2357 res = timerfd_gettime (fd, &ots);
2358
2359 if (!res)
2360 {
2361 EXTEND (SP, 2);
2362 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2363 PUSHs (newSVnv (ts_get (&ots.it_value)));
2364 }
2365#else
2366 errno = ENOSYS;
2367#endif
2368}
2369
2370UV
2371get_fdlimit ()
2372 CODE:
2373#if HAVE_RLIMITS
2374 struct rlimit rl;
2375 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2376 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2377#endif
2378 XSRETURN_UNDEF;
2379 OUTPUT:
2380 RETVAL
2381
2382void
2383min_fdlimit (UV limit = 0x7fffffffU)
2384 CODE:
2385{
2386#if HAVE_RLIMITS
2387 struct rlimit rl;
2388 rlim_t orig_rlim_max;
2389 UV bit;
2390
2391 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2392 goto fail;
2393
2394 if (rl.rlim_cur == RLIM_INFINITY)
2395 XSRETURN_YES;
2396
2397 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2398
2399 if (rl.rlim_cur < limit)
2400 {
2401 rl.rlim_cur = limit;
2402
2403 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2404 rl.rlim_max = rl.rlim_cur;
2405 }
2406
2407 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2408 XSRETURN_YES;
2409
2410 if (errno == EPERM)
2411 {
2412 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2413 /* our limit overflows a system-wide limit */
2414 /* try an adaptive algorithm, but do not lower the hardlimit */
2415 rl.rlim_max = 0;
2416 for (bit = 0x40000000U; bit; bit >>= 1)
2417 {
2418 rl.rlim_max |= bit;
2419 rl.rlim_cur = rl.rlim_max;
2420
2421 /* nevr decrease the hard limit */
2422 if (rl.rlim_max < orig_rlim_max)
2423 break;
2424
2425 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2426 rl.rlim_max &= ~bit; /* too high, remove bit again */
2427 }
2428
2429 /* now, raise the soft limit to the max permitted */
2430 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2431 {
2432 rl.rlim_cur = rl.rlim_max;
2433 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2434 errno = EPERM;
2435 }
2436 }
2437#endif
2438 fail:
2439 XSRETURN_UNDEF;
2440}
2441
2442void _on_next_submit (SV *cb)
2443 CODE:
2444 SvREFCNT_dec (on_next_submit);
2445 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2446
1439PROTOTYPES: DISABLE 2447PROTOTYPES: DISABLE
2448
2449MODULE = IO::AIO PACKAGE = IO::AIO::WD
2450
2451BOOT:
2452{
2453 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2454 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2455}
2456
2457void
2458DESTROY (SV *self)
2459 CODE:
2460{
2461 aio_wd wd = SvAIO_WD (self);
2462#if HAVE_AT
2463 {
2464 SV *callback = &PL_sv_undef;
2465 dREQ; /* clobbers next_pri :/ */
2466 next_pri = req->pri; /* restore next_pri */
2467 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2468 req->type = EIO_WD_CLOSE;
2469 req->wd = wd;
2470 REQ_SEND;
2471 }
2472#else
2473 eio_wd_close_sync (wd);
2474#endif
2475}
1440 2476
1441MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2477MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442 2478
1443void 2479void
1444cancel (aio_req_ornot req) 2480cancel (aio_req_ornot req)
1445 CODE: 2481 CODE:
1446 req_cancel (req); 2482 eio_cancel (req);
1447 2483
1448void 2484void
1449cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2485cb (aio_req_ornot req, SV *callback = NO_INIT)
1450 CODE: 2486 PPCODE:
2487{
2488 if (GIMME_V != G_VOID)
2489 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2490
2491 if (items > 1)
2492 {
2493 SV *cb_cv = get_cb (callback);
2494
1451 SvREFCNT_dec (req->callback); 2495 SvREFCNT_dec (req->callback);
1452 req->callback = newSVsv (callback); 2496 req->callback = SvREFCNT_inc (cb_cv);
2497 }
2498}
1453 2499
1454MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2500MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1455 2501
1456void 2502void
1457add (aio_req grp, ...) 2503add (aio_req grp, ...)
1458 PPCODE: 2504 PPCODE:
1459{ 2505{
1460 int i; 2506 int i;
1461 aio_req req;
1462 2507
1463 if (grp->fd == 2) 2508 if (grp->int1 == 2)
1464 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2509 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465 2510
1466 for (i = 1; i < items; ++i ) 2511 for (i = 1; i < items; ++i )
1467 { 2512 {
2513 aio_req req;
2514
1468 if (GIMME_V != G_VOID) 2515 if (GIMME_V != G_VOID)
1469 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2516 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1470 2517
1471 req = SvAIO_REQ (ST (i)); 2518 req = SvAIO_REQ (ST (i));
1472 2519
1473 if (req) 2520 if (req)
1474 { 2521 eio_grp_add (grp, req);
1475 ++grp->length;
1476 req->grp = grp;
1477
1478 req->grp_prev = 0;
1479 req->grp_next = grp->grp_first;
1480
1481 if (grp->grp_first)
1482 grp->grp_first->grp_prev = req;
1483
1484 grp->grp_first = req;
1485 }
1486 } 2522 }
1487} 2523}
1488 2524
1489void 2525void
1490cancel_subs (aio_req_ornot req) 2526cancel_subs (aio_req_ornot req)
… …
1494void 2530void
1495result (aio_req grp, ...) 2531result (aio_req grp, ...)
1496 CODE: 2532 CODE:
1497{ 2533{
1498 int i; 2534 int i;
2535 AV *av;
2536
2537 grp->errorno = errno;
2538
1499 AV *av = newAV (); 2539 av = newAV ();
2540 av_extend (av, items - 1);
1500 2541
1501 for (i = 1; i < items; ++i ) 2542 for (i = 1; i < items; ++i )
1502 av_push (av, newSVsv (ST (i))); 2543 av_push (av, newSVsv (ST (i)));
1503 2544
1504 SvREFCNT_dec (grp->data); 2545 SvREFCNT_dec (grp->sv1);
1505 grp->data = (SV *)av; 2546 grp->sv1 = (SV *)av;
1506} 2547}
2548
2549void
2550errno (aio_req grp, int errorno = errno)
2551 CODE:
2552 grp->errorno = errorno;
1507 2553
1508void 2554void
1509limit (aio_req grp, int limit) 2555limit (aio_req grp, int limit)
1510 CODE: 2556 CODE:
1511 grp->fd2 = limit; 2557 eio_grp_limit (grp, limit);
1512 aio_grp_feed (grp);
1513 2558
1514void 2559void
1515feed (aio_req grp, SV *callback=&PL_sv_undef) 2560feed (aio_req grp, SV *callback = &PL_sv_undef)
1516 CODE: 2561 CODE:
1517{ 2562{
1518 SvREFCNT_dec (grp->fh2); 2563 SvREFCNT_dec (grp->sv2);
1519 grp->fh2 = newSVsv (callback); 2564 grp->sv2 = newSVsv (callback);
2565 grp->feed = aio_grp_feed;
1520 2566
1521 if (grp->fd2 <= 0) 2567 if (grp->int2 <= 0)
1522 grp->fd2 = 2; 2568 grp->int2 = 2;
1523 2569
1524 aio_grp_feed (grp); 2570 eio_grp_limit (grp, grp->int2);
1525} 2571}
1526 2572

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