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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.130 by root, Thu Oct 2 11:35:03 2008 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
5#include <sys/types.h> 12#include <sys/types.h>
6#include <sys/stat.h> 13#include <sys/stat.h>
7
8#include <unistd.h> 14#include <limits.h>
9#include <fcntl.h> 15#include <fcntl.h>
10#include <signal.h>
11#include <sched.h> 16#include <sched.h>
12#if __linux 17
18/* perl namespace pollution */
19#undef VERSION
20
21#ifdef _WIN32
22
23# define EIO_STRUCT_DIRENT Direntry_t
24# undef malloc
25# undef free
26
27// perl overrides all those nice win32 functions
28# undef open
29# undef read
30# undef write
31# undef send
32# undef recv
33# undef stat
34# undef fstat
35# define lstat stat
36# undef truncate
37# undef ftruncate
38# undef open
39# undef close
40# undef unlink
41# undef rmdir
42# undef rename
43# undef lseek
44
45# define chown(a,b,c) (errno = ENOSYS, -1)
46# define fchown(a,b,c) (errno = ENOSYS, -1)
47# define fchmod(a,b) (errno = ENOSYS, -1)
48# define symlink(a,b) (errno = ENOSYS, -1)
49# define readlink(a,b,c) (errno = ENOSYS, -1)
50# define mknod(a,b,c) (errno = ENOSYS, -1)
51# define truncate(a,b) (errno = ENOSYS, -1)
52# define ftruncate(fd,o) chsize ((fd), (o))
53# define fsync(fd) _commit (fd)
54# define opendir(fd) (errno = ENOSYS, 0)
55# define readdir(fd) (errno = ENOSYS, -1)
56# define closedir(fd) (errno = ENOSYS, -1)
57# define mkdir(a,b) mkdir (a)
58
59#else
60
61# include <sys/time.h>
13#include <sys/syscall.h> 62# include <sys/select.h>
63# include <unistd.h>
64# include <utime.h>
65# include <signal.h>
66# define EIO_STRUCT_DIRENT struct dirent
67
14#endif 68#endif
15 69
16#include <pthread.h> 70/* perl stupidly overrides readdir and maybe others */
71/* with thread-unsafe versions, imagine that :( */
72#undef readdir
73#undef opendir
74#undef closedir
17 75
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 76#define EIO_STRUCT_STAT Stat_t
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 77
22#if __ia64 78/* use NV for 32 bit perls as it allows larger offsets */
23# define STACKSIZE 65536 79#if IVSIZE >= 8
80# define SvVAL64 SvIV
24#else 81#else
25# define STACKSIZE 4096 82# define SvVAL64 SvNV
26#endif 83#endif
27 84
85/*****************************************************************************/
86
87#if __GNUC__ >= 3
88# define expect(expr,value) __builtin_expect ((expr),(value))
89#else
90# define expect(expr,value) (expr)
91#endif
92
93#define expect_false(expr) expect ((expr) != 0, 0)
94#define expect_true(expr) expect ((expr) != 0, 1)
95
96/*****************************************************************************/
97
98static HV *stash;
99typedef SV SV8; /* byte-sv, used for argument-checking */
100
101#define AIO_REQ_KLASS "IO::AIO::REQ"
102#define AIO_GRP_KLASS "IO::AIO::GRP"
103
104#define EIO_REQ_MEMBERS \
105 SV *callback; \
106 SV *sv1, *sv2; \
107 STRLEN stroffset; \
108 SV *self;
109
110#define EIO_NO_WRAPPERS 1
111
112#include "libeio/eio.h"
113
114static int req_invoke (eio_req *req);
115#define EIO_FINISH(req) req_invoke (req)
116static void aio_grp_feed (eio_req *grp);
117#define EIO_FEED(req) aio_grp_feed (req)
118static void req_destroy (eio_req *grp);
119#define EIO_DESTROY(req) req_destroy (req)
120
28enum { 121enum {
29 REQ_QUIT, 122 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
30 REQ_OPEN, REQ_CLOSE,
31 REQ_READ, REQ_WRITE, REQ_READAHEAD,
32 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
33 REQ_FSYNC, REQ_FDATASYNC,
34}; 123};
35 124
36typedef struct aio_cb { 125#include "libeio/eio.c"
37 struct aio_cb *volatile next;
38 126
39 int type;
40
41 int fd;
42 off_t offset;
43 size_t length;
44 ssize_t result;
45 mode_t mode; /* open */
46 int errorno;
47 SV *data, *callback, *fh;
48 void *dataptr;
49 STRLEN dataoffset;
50
51 Stat_t *statdata;
52} aio_cb;
53
54typedef aio_cb *aio_req; 127typedef eio_req *aio_req;
128typedef eio_req *aio_req_ornot;
55 129
56static int started; 130static SV *on_next_submit;
57static volatile int nreqs; 131static int next_pri = EIO_PRI_DEFAULT;
58static int max_outstanding = 1<<30; 132static int max_outstanding;
59static int respipe [2];
60 133
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 134static int respipe_osf [2], respipe [2] = { -1, -1 };
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64 135
65static volatile aio_req reqs, reqe; /* queue start, queue end */ 136static void req_destroy (aio_req req);
66static volatile aio_req ress, rese; /* queue start, queue end */ 137static void req_cancel (aio_req req);
67 138
68static void 139static void want_poll (void)
69poll_wait ()
70{ 140{
71 if (nreqs && !ress) 141 /* write a dummy byte to the pipe so fh becomes ready */
142 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
143}
144
145static void done_poll (void)
146{
147 /* read any signals sent by the worker threads */
148 char buf [4];
149 while (respipe_read (respipe [0], buf, 4) == 4)
150 ;
151}
152
153/* must be called at most once */
154static SV *req_sv (aio_req req, const char *klass)
155{
156 if (!req->self)
72 { 157 {
73 fd_set rfd; 158 req->self = (SV *)newHV ();
74 FD_ZERO(&rfd); 159 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
75 FD_SET(respipe [0], &rfd);
76
77 select (respipe [0] + 1, &rfd, 0, 0, 0);
78 } 160 }
79}
80 161
81static int 162 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
82poll_cb () 163}
164
165static aio_req SvAIO_REQ (SV *sv)
166{
167 MAGIC *mg;
168
169 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
170 croak ("object of class " AIO_REQ_KLASS " expected");
171
172 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
173
174 return mg ? (aio_req)mg->mg_ptr : 0;
175}
176
177static void aio_grp_feed (aio_req grp)
178{
179 if (grp->sv2 && SvOK (grp->sv2))
180 {
181 dSP;
182
183 ENTER;
184 SAVETMPS;
185 PUSHMARK (SP);
186 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
187 PUTBACK;
188 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
189 SPAGAIN;
190 FREETMPS;
191 LEAVE;
192 }
193}
194
195static void req_submit (eio_req *req)
196{
197 eio_submit (req);
198
199 if (expect_false (on_next_submit))
200 {
201 dSP;
202 SV *cb = sv_2mortal (on_next_submit);
203
204 on_next_submit = 0;
205
206 PUSHMARK (SP);
207 PUTBACK;
208 call_sv (cb, G_DISCARD | G_EVAL);
209 }
210}
211
212static int req_invoke (eio_req *req)
83{ 213{
84 dSP; 214 dSP;
85 int count = 0;
86 aio_req req, prv;
87 215
88 pthread_mutex_lock (&reslock); 216 if (req->flags & FLAG_SV2_RO_OFF)
217 SvREADONLY_off (req->sv2);
89 218
90 { 219 if (!EIO_CANCELLED (req) && req->callback)
91 /* read any signals sent by the worker threads */
92 char buf [32];
93 while (read (respipe [0], buf, 32) > 0)
94 ;
95 }
96
97 req = ress;
98 ress = rese = 0;
99
100 pthread_mutex_unlock (&reslock);
101
102 while (req)
103 { 220 {
104 nreqs--; 221 ENTER;
222 SAVETMPS;
223 PUSHMARK (SP);
224 EXTEND (SP, 1);
105 225
106 if (req->type == REQ_QUIT) 226 switch (req->type)
107 started--;
108 else
109 { 227 {
110 int errorno = errno; 228 case EIO_READDIR:
111 errno = req->errorno;
112
113 if (req->type == REQ_READ)
114 SvCUR_set (req->data, req->dataoffset
115 + req->result > 0 ? req->result : 0);
116
117 if (req->data)
118 SvREFCNT_dec (req->data);
119
120 if (req->fh)
121 SvREFCNT_dec (req->fh);
122
123 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
124 { 229 {
125 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 230 SV *rv = &PL_sv_undef;
126 PL_laststatval = req->result;
127 PL_statcache = *(req->statdata);
128 231
129 Safefree (req->statdata); 232 if (req->result >= 0)
233 {
234 int i;
235 char *buf = req->ptr2;
236 AV *av = newAV ();
237
238 av_extend (av, req->result - 1);
239
240 for (i = 0; i < req->result; ++i)
241 {
242 SV *sv = newSVpv (buf, 0);
243
244 av_store (av, i, sv);
245 buf += SvCUR (sv) + 1;
246 }
247
248 rv = sv_2mortal (newRV_noinc ((SV *)av));
249 }
250
251 PUSHs (rv);
130 } 252 }
253 break;
131 254
132 ENTER; 255 case EIO_OPEN:
133 PUSHMARK (SP);
134 XPUSHs (sv_2mortal (newSViv (req->result)));
135
136 if (req->type == REQ_OPEN)
137 { 256 {
138 /* convert fd to fh */ 257 /* convert fd to fh */
139 SV *fh; 258 SV *fh = &PL_sv_undef;
140 259
141 PUTBACK; 260 if (req->result >= 0)
142 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 261 {
143 SPAGAIN; 262 GV *gv = (GV *)sv_newmortal ();
263 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
264 char sym [64];
265 int symlen;
266
267 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
268 gv_init (gv, stash, sym, symlen, 0);
144 269
145 fh = SvREFCNT_inc (POPs); 270 symlen = snprintf (
271 sym,
272 sizeof (sym),
273 "%s&=%d",
274 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
275 req->result
276 );
146 277
278 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
279 fh = (SV *)gv;
280 }
281
147 PUSHMARK (SP); 282 PUSHs (fh);
148 XPUSHs (sv_2mortal (fh));
149 } 283 }
150
151 if (SvOK (req->callback))
152 {
153 PUTBACK;
154 call_sv (req->callback, G_VOID | G_EVAL);
155 SPAGAIN;
156 }
157
158 LEAVE;
159
160 if (req->callback)
161 SvREFCNT_dec (req->callback);
162
163 errno = errorno;
164 count++;
165 }
166
167 prv = req;
168 req = req->next;
169 Safefree (prv);
170
171 /* TODO: croak on errors? */
172 }
173
174 return count;
175}
176
177static void *aio_proc(void *arg);
178
179static void
180start_thread (void)
181{
182 sigset_t fullsigset, oldsigset;
183 pthread_t tid;
184 pthread_attr_t attr;
185
186 pthread_attr_init (&attr);
187 pthread_attr_setstacksize (&attr, STACKSIZE);
188 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
189
190 sigfillset (&fullsigset);
191 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
192
193 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
194 started++;
195
196 sigprocmask (SIG_SETMASK, &oldsigset, 0);
197}
198
199static void
200send_req (aio_req req)
201{
202 nreqs++;
203
204 pthread_mutex_lock (&reqlock);
205
206 req->next = 0;
207
208 if (reqe)
209 {
210 reqe->next = req;
211 reqe = req;
212 }
213 else
214 reqe = reqs = req;
215
216 pthread_cond_signal (&reqwait);
217 pthread_mutex_unlock (&reqlock);
218
219 while (nreqs > max_outstanding)
220 {
221 poll_wait ();
222 poll_cb ();
223 }
224}
225
226static void
227end_thread (void)
228{
229 aio_req req;
230 New (0, req, 1, aio_cb);
231 req->type = REQ_QUIT;
232
233 send_req (req);
234}
235
236static void *
237aio_proc (void *thr_arg)
238{
239 aio_req req;
240 int type;
241
242 do
243 {
244 pthread_mutex_lock (&reqlock);
245
246 for (;;)
247 {
248 req = reqs;
249
250 if (reqs)
251 {
252 reqs = reqs->next;
253 if (!reqs) reqe = 0;
254 }
255
256 if (req)
257 break; 284 break;
258 285
259 pthread_cond_wait (&reqwait, &reqlock); 286 case EIO_GROUP:
260 } 287 req->int1 = 2; /* mark group as finished */
261 288
262 pthread_mutex_unlock (&reqlock); 289 if (req->sv1)
263
264 errno = 0; /* strictly unnecessary */
265
266 type = req->type;
267
268 switch (type)
269 { 290 {
270 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 291 int i;
271 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 292 AV *av = (AV *)req->sv1;
272#if SYS_readahead
273 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
274#else
275 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
276#endif
277 293
278 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 294 EXTEND (SP, AvFILL (av) + 1);
279 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 295 for (i = 0; i <= AvFILL (av); ++i)
280 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 296 PUSHs (*av_fetch (av, i, 0));
281 297 }
282 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
283 case REQ_CLOSE: req->result = close (req->fd); break;
284 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
285
286 case REQ_FSYNC: req->result = fsync (req->fd); break;
287 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288
289 case REQ_QUIT:
290 break; 298 break;
291 299
300 case EIO_NOP:
301 case EIO_BUSY:
302 break;
303
304 case EIO_READLINK:
305 if (req->result > 0)
306 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
307 break;
308
309 case EIO_STAT:
310 case EIO_LSTAT:
311 case EIO_FSTAT:
312 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
313 PL_laststatval = req->result;
314 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
315 PUSHs (sv_2mortal (newSViv (req->result)));
316 break;
317
318 case EIO_READ:
319 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
320 *SvEND (req->sv2) = 0;
321 PUSHs (sv_2mortal (newSViv (req->result)));
322 break;
323
324 case EIO_DUP2:
325 if (req->result > 0)
326 req->result = 0;
327 /* FALLTHROUGH */
328
292 default: 329 default:
293 req->result = ENOSYS; 330 PUSHs (sv_2mortal (newSViv (req->result)));
294 break; 331 break;
295 } 332 }
296 333
297 req->errorno = errno; 334 errno = req->errorno;
298 335
299 pthread_mutex_lock (&reslock); 336 PUTBACK;
337 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
338 SPAGAIN;
300 339
301 req->next = 0; 340 FREETMPS;
341 LEAVE;
302 342
303 if (rese) 343 PUTBACK;
304 {
305 rese->next = req;
306 rese = req;
307 }
308 else
309 {
310 rese = ress = req;
311
312 /* write a dummy byte to the pipe so fh becomes ready */
313 write (respipe [1], &respipe, 1);
314 }
315
316 pthread_mutex_unlock (&reslock);
317 } 344 }
318 while (type != REQ_QUIT);
319 345
346 return !!SvTRUE (ERRSV);
347}
348
349static void req_destroy (aio_req req)
350{
351 if (req->self)
352 {
353 sv_unmagic (req->self, PERL_MAGIC_ext);
354 SvREFCNT_dec (req->self);
355 }
356
357 SvREFCNT_dec (req->sv1);
358 SvREFCNT_dec (req->sv2);
359 SvREFCNT_dec (req->callback);
360
361 Safefree (req);
362}
363
364static void req_cancel_subs (aio_req grp)
365{
366 aio_req sub;
367
368 if (grp->type != EIO_GROUP)
369 return;
370
371 SvREFCNT_dec (grp->sv2);
372 grp->sv2 = 0;
373
374 eio_grp_cancel (grp);
375}
376
377#ifdef USE_SOCKETS_AS_HANDLES
378# define TO_SOCKET(x) (win32_get_osfhandle (x))
379#else
380# define TO_SOCKET(x) (x)
381#endif
382
383static void
384create_respipe (void)
385{
386 int old_readfd = respipe [0];
387
388 if (respipe [1] >= 0)
389 respipe_close (TO_SOCKET (respipe [1]));
390
391#ifdef _WIN32
392 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
393#else
394 if (pipe (respipe))
395#endif
396 croak ("unable to initialize result pipe");
397
398 if (old_readfd >= 0)
399 {
400 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
401 croak ("unable to initialize result pipe(2)");
402
403 respipe_close (respipe [0]);
404 respipe [0] = old_readfd;
405 }
406
407#ifdef _WIN32
408 int arg = 1;
409 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
410 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
411#else
412 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
413 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
414#endif
415 croak ("unable to initialize result pipe(3)");
416
417 respipe_osf [0] = TO_SOCKET (respipe [0]);
418 respipe_osf [1] = TO_SOCKET (respipe [1]);
419}
420
421static void poll_wait (void)
422{
423 fd_set rfd;
424
425 while (eio_nreqs ())
426 {
427 int size;
428
429 X_LOCK (reslock);
430 size = res_queue.size;
431 X_UNLOCK (reslock);
432
433 if (size)
434 return;
435
436 etp_maybe_start_thread ();
437
438 FD_ZERO (&rfd);
439 FD_SET (respipe [0], &rfd);
440
441 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
442 }
443}
444
445static int poll_cb (void)
446{
447 for (;;)
448 {
449 int res = eio_poll ();
450
451 if (res > 0)
452 croak (0);
453
454 if (!max_outstanding || max_outstanding > eio_nreqs ())
455 return res;
456
457 poll_wait ();
458 }
459}
460
461static void atfork_child (void)
462{
463 create_respipe ();
464}
465
466static SV *
467get_cb (SV *cb_sv)
468{
469 HV *st;
470 GV *gvp;
471 CV *cv;
472
473 if (!SvOK (cb_sv))
320 return 0; 474 return 0;
321}
322 475
476 cv = sv_2cv (cb_sv, &st, &gvp, 0);
477
478 if (!cv)
479 croak ("IO::AIO callback must be undef or a CODE reference");
480
481 return (SV *)cv;
482}
483
484#define dREQ \
485 SV *cb_cv; \
486 aio_req req; \
487 int req_pri = next_pri; \
488 next_pri = EIO_PRI_DEFAULT; \
489 \
490 cb_cv = get_cb (callback); \
491 \
492 Newz (0, req, 1, eio_req); \
493 if (!req) \
494 croak ("out of memory during eio_req allocation"); \
495 \
496 req->callback = SvREFCNT_inc (cb_cv); \
497 req->pri = req_pri
498
499#define REQ_SEND \
500 PUTBACK; \
501 req_submit (req); \
502 SPAGAIN; \
503 \
504 if (GIMME_V != G_VOID) \
505 XPUSHs (req_sv (req, AIO_REQ_KLASS));
506
323MODULE = IO::AIO PACKAGE = IO::AIO 507MODULE = IO::AIO PACKAGE = IO::AIO
324 508
325PROTOTYPES: ENABLE 509PROTOTYPES: ENABLE
326 510
327BOOT: 511BOOT:
328{ 512{
329 if (pipe (respipe)) 513 stash = gv_stashpv ("IO::AIO", 1);
330 croak ("unable to initialize result pipe");
331 514
332 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 515 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
333 croak ("cannot set result pipe to nonblocking mode"); 516 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
517 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
518 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
519 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
520#ifndef _WIN32
521 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
522#endif
334 523
335 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 524 create_respipe ();
336 croak ("cannot set result pipe to nonblocking mode");
337}
338 525
526 if (eio_init (want_poll, done_poll) < 0)
527 croak ("IO::AIO: unable to initialise eio library");
528
529 /* atfork child called in fifo order, so before eio's handler */
530 X_THREAD_ATFORK (0, 0, atfork_child);
531}
532
339void 533void
340min_parallel(nthreads) 534max_poll_reqs (int nreqs)
341 int nthreads
342 PROTOTYPE: $ 535 PROTOTYPE: $
343 CODE: 536 CODE:
344 while (nthreads > started) 537 eio_set_max_poll_reqs (nreqs);
345 start_thread ();
346 538
347void 539void
348max_parallel(nthreads) 540max_poll_time (double nseconds)
349 int nthreads
350 PROTOTYPE: $ 541 PROTOTYPE: $
351 CODE: 542 CODE:
543 eio_set_max_poll_time (nseconds);
544
545void
546min_parallel (int nthreads)
547 PROTOTYPE: $
548 CODE:
549 eio_set_min_parallel (nthreads);
550
551void
552max_parallel (int nthreads)
553 PROTOTYPE: $
554 CODE:
555 eio_set_max_parallel (nthreads);
556
557void
558max_idle (int nthreads)
559 PROTOTYPE: $
560 CODE:
561 eio_set_max_idle (nthreads);
562
563void
564max_outstanding (int maxreqs)
565 PROTOTYPE: $
566 CODE:
567 max_outstanding = maxreqs;
568
569void
570aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
571 PROTOTYPE: $$$;$
572 PPCODE:
352{ 573{
353 int cur = started; 574 dREQ;
354 while (cur > nthreads) 575
355 { 576 req->type = EIO_OPEN;
356 end_thread (); 577 req->sv1 = newSVsv (pathname);
578 req->ptr1 = SvPVbyte_nolen (req->sv1);
579 req->int1 = flags;
580 req->int2 = mode;
581
582 REQ_SEND;
583}
584
585void
586aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
587 PROTOTYPE: $;$
588 ALIAS:
589 aio_fsync = EIO_FSYNC
590 aio_fdatasync = EIO_FDATASYNC
591 PPCODE:
592{
593 dREQ;
594
595 req->type = ix;
596 req->sv1 = newSVsv (fh);
597 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
598
599 REQ_SEND (req);
600}
601
602void
603aio_close (SV *fh, SV *callback=&PL_sv_undef)
604 PROTOTYPE: $;$
605 PPCODE:
606{
607 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
608 dREQ;
609
610 if (close_pipe < 0)
611 {
612 int pipefd [2];
613
614 if (pipe (pipefd) < 0
615 || close (pipefd [1]) < 0
616 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
617 abort (); /*D*/
618
619 close_pipe = pipefd [0];
620 }
621
622 req->type = EIO_DUP2;
623 req->int1 = close_pipe;
624 req->sv2 = newSVsv (fh);
625 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
626
627 REQ_SEND (req);
628}
629
630void
631aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
632 ALIAS:
633 aio_read = EIO_READ
634 aio_write = EIO_WRITE
635 PROTOTYPE: $$$$$;$
636 PPCODE:
637{
638 STRLEN svlen;
639 char *svptr = SvPVbyte (data, svlen);
640 UV len = SvUV (length);
641
642 SvUPGRADE (data, SVt_PV);
643 SvPOK_on (data);
644
645 if (dataoffset < 0)
646 dataoffset += svlen;
647
648 if (dataoffset < 0 || dataoffset > svlen)
649 croak ("dataoffset outside of data scalar");
650
651 if (ix == EIO_WRITE)
652 {
653 /* write: check length and adjust. */
654 if (!SvOK (length) || len + dataoffset > svlen)
655 len = svlen - dataoffset;
656 }
657 else
658 {
659 /* read: grow scalar as necessary */
660 svptr = SvGROW (data, len + dataoffset + 1);
661 }
662
663 if (len < 0)
664 croak ("length must not be negative");
665
666 {
667 dREQ;
668
669 req->type = ix;
670 req->sv1 = newSVsv (fh);
671 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
672 : IoOFP (sv_2io (fh)));
673 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
674 req->size = len;
675 req->sv2 = SvREFCNT_inc_NN (data);
676 req->ptr2 = (char *)svptr + dataoffset;
677 req->stroffset = dataoffset;
678
679 if (!SvREADONLY (data))
357 cur--; 680 {
681 SvREADONLY_on (data);
682 req->flags |= FLAG_SV2_RO_OFF;
358 } 683 }
359 684
360 while (started > nthreads) 685 REQ_SEND;
686 }
687}
688
689void
690aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
691 PROTOTYPE: $$;$
692 PPCODE:
693{
694 SV *data;
695 dREQ;
696
697 req->type = EIO_READLINK;
698 req->sv1 = newSVsv (path);
699 req->ptr1 = SvPVbyte_nolen (req->sv1);
700
701 REQ_SEND;
702}
703
704void
705aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
706 PROTOTYPE: $$$$;$
707 PPCODE:
708{
709 dREQ;
710
711 req->type = EIO_SENDFILE;
712 req->sv1 = newSVsv (out_fh);
713 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
714 req->sv2 = newSVsv (in_fh);
715 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
716 req->offs = SvVAL64 (in_offset);
717 req->size = length;
718
719 REQ_SEND;
720}
721
722void
723aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
724 PROTOTYPE: $$$;$
725 PPCODE:
726{
727 dREQ;
728
729 req->type = EIO_READAHEAD;
730 req->sv1 = newSVsv (fh);
731 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
732 req->offs = SvVAL64 (offset);
733 req->size = length;
734
735 REQ_SEND;
736}
737
738void
739aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
740 ALIAS:
741 aio_stat = EIO_STAT
742 aio_lstat = EIO_LSTAT
743 PPCODE:
744{
745 dREQ;
746
747 req->sv1 = newSVsv (fh_or_path);
748
749 if (SvPOK (req->sv1))
750 {
751 req->type = ix;
752 req->ptr1 = SvPVbyte_nolen (req->sv1);
753 }
754 else
755 {
756 req->type = EIO_FSTAT;
757 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
758 }
759
760 REQ_SEND;
761}
762
763void
764aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
765 PPCODE:
766{
767 dREQ;
768
769 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
770 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
771 req->sv1 = newSVsv (fh_or_path);
772
773 if (SvPOK (req->sv1))
774 {
775 req->type = EIO_UTIME;
776 req->ptr1 = SvPVbyte_nolen (req->sv1);
777 }
778 else
779 {
780 req->type = EIO_FUTIME;
781 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
782 }
783
784 REQ_SEND;
785}
786
787void
788aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
789 PPCODE:
790{
791 dREQ;
792
793 req->sv1 = newSVsv (fh_or_path);
794 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
795
796 if (SvPOK (req->sv1))
797 {
798 req->type = EIO_TRUNCATE;
799 req->ptr1 = SvPVbyte_nolen (req->sv1);
800 }
801 else
802 {
803 req->type = EIO_FTRUNCATE;
804 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
805 }
806
807 REQ_SEND;
808}
809
810void
811aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
812 ALIAS:
813 aio_chmod = EIO_CHMOD
814 aio_mkdir = EIO_MKDIR
815 PPCODE:
816{
817 dREQ;
818
819 req->int2 = mode;
820 req->sv1 = newSVsv (fh_or_path);
821
822 if (SvPOK (req->sv1))
823 {
824 req->type = ix;
825 req->ptr1 = SvPVbyte_nolen (req->sv1);
826 }
827 else
828 {
829 req->type = EIO_FCHMOD;
830 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
831 }
832
833 REQ_SEND;
834}
835
836void
837aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
838 PPCODE:
839{
840 dREQ;
841
842 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
843 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
844 req->sv1 = newSVsv (fh_or_path);
845
846 if (SvPOK (req->sv1))
847 {
848 req->type = EIO_CHOWN;
849 req->ptr1 = SvPVbyte_nolen (req->sv1);
850 }
851 else
852 {
853 req->type = EIO_FCHOWN;
854 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
855 }
856
857 REQ_SEND;
858}
859
860void
861aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
862 ALIAS:
863 aio_unlink = EIO_UNLINK
864 aio_rmdir = EIO_RMDIR
865 aio_readdir = EIO_READDIR
866 PPCODE:
867{
868 dREQ;
869
870 req->type = ix;
871 req->sv1 = newSVsv (pathname);
872 req->ptr1 = SvPVbyte_nolen (req->sv1);
873
874 REQ_SEND;
875}
876
877void
878aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
879 ALIAS:
880 aio_link = EIO_LINK
881 aio_symlink = EIO_SYMLINK
882 aio_rename = EIO_RENAME
883 PPCODE:
884{
885 dREQ;
886
887 req->type = ix;
888 req->sv1 = newSVsv (oldpath);
889 req->ptr1 = SvPVbyte_nolen (req->sv1);
890 req->sv2 = newSVsv (newpath);
891 req->ptr2 = SvPVbyte_nolen (req->sv2);
892
893 REQ_SEND;
894}
895
896void
897aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
898 PPCODE:
899{
900 dREQ;
901
902 req->type = EIO_MKNOD;
903 req->sv1 = newSVsv (pathname);
904 req->ptr1 = SvPVbyte_nolen (req->sv1);
905 req->int2 = (mode_t)mode;
906 req->offs = dev;
907
908 REQ_SEND;
909}
910
911void
912aio_busy (double delay, SV *callback=&PL_sv_undef)
913 PPCODE:
914{
915 dREQ;
916
917 req->type = EIO_BUSY;
918 req->nv1 = delay < 0. ? 0. : delay;
919
920 REQ_SEND;
921}
922
923void
924aio_group (SV *callback=&PL_sv_undef)
925 PROTOTYPE: ;$
926 PPCODE:
927{
928 dREQ;
929
930 req->type = EIO_GROUP;
931
932 req_submit (req);
933 XPUSHs (req_sv (req, AIO_GRP_KLASS));
934}
935
936void
937aio_nop (SV *callback=&PL_sv_undef)
938 ALIAS:
939 aio_nop = EIO_NOP
940 aio_sync = EIO_SYNC
941 PPCODE:
942{
943 dREQ;
944
945 req->type = ix;
946
947 REQ_SEND;
948}
949
950int
951aioreq_pri (int pri = 0)
952 PROTOTYPE: ;$
953 CODE:
954 RETVAL = next_pri;
955 if (items > 0)
956 {
957 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
958 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
959 next_pri = pri;
960 }
961 OUTPUT:
962 RETVAL
963
964void
965aioreq_nice (int nice = 0)
966 CODE:
967 nice = next_pri - nice;
968 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
969 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
970 next_pri = nice;
971
972void
973flush ()
974 PROTOTYPE:
975 CODE:
976 while (eio_nreqs ())
361 { 977 {
362 poll_wait (); 978 poll_wait ();
363 poll_cb (); 979 poll_cb ();
364 } 980 }
365}
366 981
367int 982int
368max_outstanding(nreqs)
369 int nreqs
370 PROTOTYPE: $
371 CODE:
372 RETVAL = max_outstanding;
373 max_outstanding = nreqs;
374
375void
376aio_open(pathname,flags,mode,callback=&PL_sv_undef)
377 SV * pathname
378 int flags
379 int mode
380 SV * callback
381 PROTOTYPE: $$$;$
382 CODE:
383{
384 aio_req req;
385
386 Newz (0, req, 1, aio_cb);
387
388 if (!req)
389 croak ("out of memory during aio_req allocation");
390
391 req->type = REQ_OPEN;
392 req->data = newSVsv (pathname);
393 req->dataptr = SvPV_nolen (req->data);
394 req->fd = flags;
395 req->mode = mode;
396 req->callback = SvREFCNT_inc (callback);
397
398 send_req (req);
399}
400
401void
402aio_close(fh,callback=&PL_sv_undef)
403 SV * fh
404 SV * callback
405 PROTOTYPE: $;$
406 ALIAS:
407 aio_close = REQ_CLOSE
408 aio_fsync = REQ_FSYNC
409 aio_fdatasync = REQ_FDATASYNC
410 CODE:
411{
412 aio_req req;
413
414 Newz (0, req, 1, aio_cb);
415
416 if (!req)
417 croak ("out of memory during aio_req allocation");
418
419 req->type = ix;
420 req->fh = newSVsv (fh);
421 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422 req->callback = SvREFCNT_inc (callback);
423
424 send_req (req);
425}
426
427void
428aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
429 SV * fh
430 UV offset
431 IV length
432 SV * data
433 IV dataoffset
434 SV * callback
435 ALIAS:
436 aio_read = REQ_READ
437 aio_write = REQ_WRITE
438 PROTOTYPE: $$$$$;$
439 CODE:
440{
441 aio_req req;
442 STRLEN svlen;
443 char *svptr = SvPV (data, svlen);
444
445 SvUPGRADE (data, SVt_PV);
446 SvPOK_on (data);
447
448 if (dataoffset < 0)
449 dataoffset += svlen;
450
451 if (dataoffset < 0 || dataoffset > svlen)
452 croak ("data offset outside of string");
453
454 if (ix == REQ_WRITE)
455 {
456 /* write: check length and adjust. */
457 if (length < 0 || length + dataoffset > svlen)
458 length = svlen - dataoffset;
459 }
460 else
461 {
462 /* read: grow scalar as necessary */
463 svptr = SvGROW (data, length + dataoffset);
464 }
465
466 if (length < 0)
467 croak ("length must not be negative");
468
469 Newz (0, req, 1, aio_cb);
470
471 if (!req)
472 croak ("out of memory during aio_req allocation");
473
474 req->type = ix;
475 req->fh = newSVsv (fh);
476 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477 : IoOFP (sv_2io (fh)));
478 req->offset = offset;
479 req->length = length;
480 req->data = SvREFCNT_inc (data);
481 req->dataptr = (char *)svptr + dataoffset;
482 req->callback = SvREFCNT_inc (callback);
483
484 send_req (req);
485}
486
487void
488aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489 SV * fh
490 UV offset
491 IV length
492 SV * callback
493 PROTOTYPE: $$$;$
494 CODE:
495{
496 aio_req req;
497
498 if (length < 0)
499 croak ("length must not be negative");
500
501 Newz (0, req, 1, aio_cb);
502
503 if (!req)
504 croak ("out of memory during aio_req allocation");
505
506 req->type = REQ_READAHEAD;
507 req->fh = newSVsv (fh);
508 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
509 req->offset = offset;
510 req->length = length;
511 req->callback = SvREFCNT_inc (callback);
512
513 send_req (req);
514}
515
516void
517aio_stat(fh_or_path,callback=&PL_sv_undef)
518 SV * fh_or_path
519 SV * callback
520 ALIAS:
521 aio_stat = REQ_STAT
522 aio_lstat = REQ_LSTAT
523 CODE:
524{
525 aio_req req;
526
527 Newz (0, req, 1, aio_cb);
528
529 if (!req)
530 croak ("out of memory during aio_req allocation");
531
532 New (0, req->statdata, 1, Stat_t);
533
534 if (!req->statdata)
535 croak ("out of memory during aio_req->statdata allocation");
536
537 if (SvPOK (fh_or_path))
538 {
539 req->type = ix;
540 req->data = newSVsv (fh_or_path);
541 req->dataptr = SvPV_nolen (req->data);
542 }
543 else
544 {
545 req->type = REQ_FSTAT;
546 req->fh = newSVsv (fh_or_path);
547 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548 }
549
550 req->callback = SvREFCNT_inc (callback);
551
552 send_req (req);
553}
554
555void
556aio_unlink(pathname,callback=&PL_sv_undef)
557 SV * pathname
558 SV * callback
559 CODE:
560{
561 aio_req req;
562
563 Newz (0, req, 1, aio_cb);
564
565 if (!req)
566 croak ("out of memory during aio_req allocation");
567
568 req->type = REQ_UNLINK;
569 req->data = newSVsv (pathname);
570 req->dataptr = SvPV_nolen (req->data);
571 req->callback = SvREFCNT_inc (callback);
572
573 send_req (req);
574}
575
576void
577flush()
578 PROTOTYPE:
579 CODE:
580 while (nreqs)
581 {
582 poll_wait ();
583 poll_cb ();
584 }
585
586void
587poll() 983poll()
588 PROTOTYPE: 984 PROTOTYPE:
589 CODE: 985 CODE:
590 if (nreqs)
591 {
592 poll_wait (); 986 poll_wait ();
593 poll_cb (); 987 RETVAL = poll_cb ();
594 } 988 OUTPUT:
989 RETVAL
595 990
596int 991int
597poll_fileno() 992poll_fileno()
598 PROTOTYPE: 993 PROTOTYPE:
599 CODE: 994 CODE:
… …
611 1006
612void 1007void
613poll_wait() 1008poll_wait()
614 PROTOTYPE: 1009 PROTOTYPE:
615 CODE: 1010 CODE:
616 if (nreqs)
617 poll_wait (); 1011 poll_wait ();
618 1012
619int 1013int
620nreqs() 1014nreqs()
621 PROTOTYPE: 1015 PROTOTYPE:
622 CODE: 1016 CODE:
623 RETVAL = nreqs; 1017 RETVAL = eio_nreqs ();
624 OUTPUT: 1018 OUTPUT:
625 RETVAL 1019 RETVAL
626 1020
1021int
1022nready()
1023 PROTOTYPE:
1024 CODE:
1025 RETVAL = eio_nready ();
1026 OUTPUT:
1027 RETVAL
1028
1029int
1030npending()
1031 PROTOTYPE:
1032 CODE:
1033 RETVAL = eio_npending ();
1034 OUTPUT:
1035 RETVAL
1036
1037int
1038nthreads()
1039 PROTOTYPE:
1040 CODE:
1041 RETVAL = eio_nthreads ();
1042 OUTPUT:
1043 RETVAL
1044
1045void _on_next_submit (SV *cb)
1046 CODE:
1047 SvREFCNT_dec (on_next_submit);
1048 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1049
1050PROTOTYPES: DISABLE
1051
1052MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1053
1054void
1055cancel (aio_req_ornot req)
1056 CODE:
1057 eio_cancel (req);
1058
1059void
1060cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1061 PPCODE:
1062{
1063 if (GIMME_V != G_VOID)
1064 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1065
1066 if (items > 1)
1067 {
1068 SV *cb_cv = get_cb (callback);
1069
1070 SvREFCNT_dec (req->callback);
1071 req->callback = SvREFCNT_inc (cb_cv);
1072 }
1073}
1074
1075MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1076
1077void
1078add (aio_req grp, ...)
1079 PPCODE:
1080{
1081 int i;
1082
1083 if (grp->int1 == 2)
1084 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1085
1086 for (i = 1; i < items; ++i )
1087 {
1088 aio_req req;
1089
1090 if (GIMME_V != G_VOID)
1091 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1092
1093 req = SvAIO_REQ (ST (i));
1094
1095 if (req)
1096 eio_grp_add (grp, req);
1097 }
1098}
1099
1100void
1101cancel_subs (aio_req_ornot req)
1102 CODE:
1103 req_cancel_subs (req);
1104
1105void
1106result (aio_req grp, ...)
1107 CODE:
1108{
1109 int i;
1110 AV *av;
1111
1112 grp->errorno = errno;
1113
1114 av = newAV ();
1115
1116 for (i = 1; i < items; ++i )
1117 av_push (av, newSVsv (ST (i)));
1118
1119 SvREFCNT_dec (grp->sv1);
1120 grp->sv1 = (SV *)av;
1121}
1122
1123void
1124errno (aio_req grp, int errorno = errno)
1125 CODE:
1126 grp->errorno = errorno;
1127
1128void
1129limit (aio_req grp, int limit)
1130 CODE:
1131 eio_grp_limit (grp, limit);
1132
1133void
1134feed (aio_req grp, SV *callback=&PL_sv_undef)
1135 CODE:
1136{
1137 SvREFCNT_dec (grp->sv2);
1138 grp->sv2 = newSVsv (callback);
1139
1140 if (grp->int2 <= 0)
1141 grp->int2 = 2;
1142
1143 eio_grp_limit (grp, grp->int2);
1144}
1145

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