ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/IO-AIO/AIO.xs
(Generate patch)

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.12 by root, Wed Jul 20 21:57:04 2005 UTC vs.
Revision 1.126 by root, Thu Sep 25 07:56:07 2008 UTC

1#define _XOPEN_SOURCE 500 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
7#include <sys/types.h> 12#include <sys/types.h>
8#include <sys/stat.h> 13#include <sys/stat.h>
9
10#include <unistd.h> 14#include <limits.h>
11#include <fcntl.h> 15#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 16#include <sched.h>
14#if __linux 17
18/* 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>
15#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
16#endif 68#endif
17 69
18#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
19 75
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 76#define EIO_STRUCT_STAT Stat_t
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
23 77
24#if __ia64 78/* use NV for 32 bit perls as it allows larger offsets */
25# define STACKSIZE 65536 79#if IVSIZE >= 8
80# define SvVAL64 SvIV
26#else 81#else
27# define STACKSIZE 4096 82# define SvVAL64 SvNV
28#endif 83#endif
29 84
85static HV *stash;
86typedef SV SV8; /* byte-sv, used for argument-checking */
87
88#define AIO_REQ_KLASS "IO::AIO::REQ"
89#define AIO_GRP_KLASS "IO::AIO::GRP"
90
91#define EIO_REQ_MEMBERS \
92 SV *callback; \
93 SV *sv1, *sv2; \
94 STRLEN stroffset; \
95 SV *self;
96
97#define EIO_NO_WRAPPERS 1
98
99#include "libeio/eio.h"
100
101static int req_invoke (eio_req *req);
102#define EIO_FINISH(req) req_invoke (req)
103static void aio_grp_feed (eio_req *grp);
104#define EIO_FEED(req) aio_grp_feed (req)
105static void req_destroy (eio_req *grp);
106#define EIO_DESTROY(req) req_destroy (req)
107
30enum { 108enum {
31 REQ_QUIT, 109 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 110};
37 111
38typedef struct aio_cb { 112#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 113
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 114typedef eio_req *aio_req;
115typedef eio_req *aio_req_ornot;
57 116
58static int started; 117static SV *on_next_submit;
59static volatile int nreqs; 118static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 119static int max_outstanding;
61static int respipe [2];
62 120
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 121static int respipe_osf [2], respipe [2] = { -1, -1 };
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 122
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 123static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 124static void req_cancel (aio_req req);
69 125
70static void 126static void want_poll (void)
71poll_wait ()
72{ 127{
73 if (nreqs && !ress) 128 /* write a dummy byte to the pipe so fh becomes ready */
129 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
130}
131
132static void done_poll (void)
133{
134 /* read any signals sent by the worker threads */
135 char buf [4];
136 while (respipe_read (respipe [0], buf, 4) == 4)
137 ;
138}
139
140/* must be called at most once */
141static SV *req_sv (aio_req req, const char *klass)
142{
143 if (!req->self)
74 { 144 {
75 fd_set rfd; 145 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 146 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 147 }
81}
82 148
83static int 149 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
84poll_cb () 150}
151
152static aio_req SvAIO_REQ (SV *sv)
153{
154 MAGIC *mg;
155
156 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
157 croak ("object of class " AIO_REQ_KLASS " expected");
158
159 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
160
161 return mg ? (aio_req)mg->mg_ptr : 0;
162}
163
164static void aio_grp_feed (aio_req grp)
165{
166 if (grp->sv2 && SvOK (grp->sv2))
167 {
168 dSP;
169
170 ENTER;
171 SAVETMPS;
172 PUSHMARK (SP);
173 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
174 PUTBACK;
175 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
176 SPAGAIN;
177 FREETMPS;
178 LEAVE;
179 }
180}
181
182static void req_submit (eio_req *req)
183{
184 eio_submit (req);
185
186 if (on_next_submit)
187 {
188 dSP;
189 SV *cb = sv_2mortal (on_next_submit);
190
191 on_next_submit = 0;
192
193 PUSHMARK (SP);
194 PUTBACK;
195 call_sv (cb, G_DISCARD | G_EVAL);
196 }
197}
198
199static int req_invoke (eio_req *req)
85{ 200{
86 dSP; 201 dSP;
87 int count = 0;
88 aio_req req, prv;
89 202
90 pthread_mutex_lock (&reslock); 203 if (req->flags & FLAG_SV2_RO_OFF)
204 SvREADONLY_off (req->sv2);
91 205
92 { 206 if (!EIO_CANCELLED (req) && SvOK (req->callback))
93 /* read any signals sent by the worker threads */
94 char buf [32];
95 while (read (respipe [0], buf, 32) > 0)
96 ;
97 }
98
99 req = ress;
100 ress = rese = 0;
101
102 pthread_mutex_unlock (&reslock);
103
104 while (req)
105 { 207 {
106 nreqs--; 208 ENTER;
209 SAVETMPS;
210 PUSHMARK (SP);
211 EXTEND (SP, 1);
107 212
108 if (req->type == REQ_QUIT) 213 switch (req->type)
109 started--;
110 else
111 { 214 {
112 int errorno = errno; 215 case EIO_READDIR:
113 errno = req->errorno;
114
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123 { 216 {
124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 217 SV *rv = &PL_sv_undef;
125 PL_laststatval = req->result;
126 PL_statcache = *(req->statdata);
127 218
128 Safefree (req->statdata); 219 if (req->result >= 0)
220 {
221 int i;
222 char *buf = req->ptr2;
223 AV *av = newAV ();
224
225 av_extend (av, req->result - 1);
226
227 for (i = 0; i < req->result; ++i)
228 {
229 SV *sv = newSVpv (buf, 0);
230
231 av_store (av, i, sv);
232 buf += SvCUR (sv) + 1;
233 }
234
235 rv = sv_2mortal (newRV_noinc ((SV *)av));
236 }
237
238 PUSHs (rv);
129 } 239 }
240 break;
130 241
131 PUSHMARK (SP); 242 case EIO_OPEN:
132 XPUSHs (sv_2mortal (newSViv (req->result)));
133
134 if (req->type == REQ_OPEN)
135 { 243 {
136 /* convert fd to fh */ 244 /* convert fd to fh */
137 SV *fh; 245 SV *fh = &PL_sv_undef;
138 246
139 PUTBACK; 247 if (req->result >= 0)
140 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 248 {
141 SPAGAIN; 249 GV *gv = (GV *)sv_newmortal ();
250 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
251 char sym [64];
252 int symlen;
253
254 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
255 gv_init (gv, stash, sym, symlen, 0);
142 256
143 fh = POPs; 257 symlen = snprintf (
258 sym,
259 sizeof (sym),
260 "%s&=%d",
261 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
262 req->result
263 );
144 264
145 PUSHMARK (SP); 265 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
266 fh = (SV *)gv;
267 }
268
146 XPUSHs (fh); 269 PUSHs (fh);
147 } 270 }
148
149 if (SvOK (req->callback))
150 {
151 PUTBACK;
152 call_sv (req->callback, G_VOID | G_EVAL);
153 SPAGAIN;
154 }
155
156 if (req->callback)
157 SvREFCNT_dec (req->callback);
158
159 errno = errorno;
160 count++;
161 }
162
163 prv = req;
164 req = req->next;
165 Safefree (prv);
166
167 /* TODO: croak on errors? */
168 }
169
170 return count;
171}
172
173static void *aio_proc(void *arg);
174
175static void
176start_thread (void)
177{
178 sigset_t fullsigset, oldsigset;
179 pthread_t tid;
180 pthread_attr_t attr;
181
182 pthread_attr_init (&attr);
183 pthread_attr_setstacksize (&attr, STACKSIZE);
184 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
185
186 sigfillset (&fullsigset);
187 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
188
189 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
190 started++;
191
192 sigprocmask (SIG_SETMASK, &oldsigset, 0);
193}
194
195static void
196send_req (aio_req req)
197{
198 nreqs++;
199
200 pthread_mutex_lock (&reqlock);
201
202 req->next = 0;
203
204 if (reqe)
205 {
206 reqe->next = req;
207 reqe = req;
208 }
209 else
210 reqe = reqs = req;
211
212 pthread_cond_signal (&reqwait);
213 pthread_mutex_unlock (&reqlock);
214
215 while (nreqs > max_outstanding)
216 {
217 poll_wait ();
218 poll_cb ();
219 }
220}
221
222static void
223end_thread (void)
224{
225 aio_req req;
226 New (0, req, 1, aio_cb);
227 req->type = REQ_QUIT;
228
229 send_req (req);
230}
231
232static void
233read_write (int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239
240 SvUPGRADE (data, SVt_PV);
241 SvPOK_on (data);
242
243 if (dataoffset < 0)
244 dataoffset += svlen;
245
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 {
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260
261 if (length < 0)
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278}
279
280static void *
281aio_proc (void *thr_arg)
282{
283 aio_req req;
284 int type;
285
286 do
287 {
288 pthread_mutex_lock (&reqlock);
289
290 for (;;)
291 {
292 req = reqs;
293
294 if (reqs)
295 {
296 reqs = reqs->next;
297 if (!reqs) reqe = 0;
298 }
299
300 if (req)
301 break; 271 break;
302 272
303 pthread_cond_wait (&reqwait, &reqlock); 273 case EIO_GROUP:
304 } 274 req->int1 = 2; /* mark group as finished */
305 275
306 pthread_mutex_unlock (&reqlock); 276 if (req->sv1)
307
308 errno = 0; /* strictly unnecessary */
309
310 type = req->type;
311
312 switch (type)
313 { 277 {
314 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 278 int i;
315 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 279 AV *av = (AV *)req->sv1;
316#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif
321 280
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 281 EXTEND (SP, AvFILL (av) + 1);
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 282 for (i = 0; i <= AvFILL (av); ++i)
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 283 PUSHs (*av_fetch (av, i, 0));
325 284 }
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
329
330 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332
333 case REQ_QUIT:
334 break; 285 break;
335 286
287 case EIO_NOP:
288 case EIO_BUSY:
289 break;
290
291 case EIO_READLINK:
292 if (req->result > 0)
293 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
294 break;
295
296 case EIO_STAT:
297 case EIO_LSTAT:
298 case EIO_FSTAT:
299 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
300 PL_laststatval = req->result;
301 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
302 PUSHs (sv_2mortal (newSViv (req->result)));
303 break;
304
305 case EIO_READ:
306 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
307 *SvEND (req->sv2) = 0;
308 PUSHs (sv_2mortal (newSViv (req->result)));
309 break;
310
311 case EIO_DUP2:
312 if (req->result > 0)
313 req->result = 0;
314 /* FALLTHROUGH */
315
336 default: 316 default:
337 req->result = ENOSYS; 317 PUSHs (sv_2mortal (newSViv (req->result)));
338 break; 318 break;
339 } 319 }
340 320
341 req->errorno = errno; 321 errno = req->errorno;
342 322
343 pthread_mutex_lock (&reslock); 323 PUTBACK;
324 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
325 SPAGAIN;
344 326
345 req->next = 0; 327 FREETMPS;
328 LEAVE;
346 329
347 if (rese) 330 PUTBACK;
348 {
349 rese->next = req;
350 rese = req;
351 }
352 else
353 {
354 rese = ress = req;
355
356 /* write a dummy byte to the pipe so fh becomes ready */
357 write (respipe [1], &respipe, 1);
358 }
359
360 pthread_mutex_unlock (&reslock);
361 } 331 }
362 while (type != REQ_QUIT);
363 332
333 return !!SvTRUE (ERRSV);
334}
335
336static void req_destroy (aio_req req)
337{
338 if (req->self)
339 {
340 sv_unmagic (req->self, PERL_MAGIC_ext);
341 SvREFCNT_dec (req->self);
342 }
343
344 SvREFCNT_dec (req->sv1);
345 SvREFCNT_dec (req->sv2);
346 SvREFCNT_dec (req->callback);
347
348 Safefree (req);
349}
350
351static void req_cancel_subs (aio_req grp)
352{
353 aio_req sub;
354
355 if (grp->type != EIO_GROUP)
364 return 0; 356 return;
365}
366 357
358 SvREFCNT_dec (grp->sv2);
359 grp->sv2 = 0;
360
361 eio_grp_cancel (grp);
362}
363
364#ifdef USE_SOCKETS_AS_HANDLES
365# define TO_SOCKET(x) (win32_get_osfhandle (x))
366#else
367# define TO_SOCKET(x) (x)
368#endif
369
370static void
371create_respipe (void)
372{
373 int old_readfd = respipe [0];
374
375 if (respipe [1] >= 0)
376 respipe_close (TO_SOCKET (respipe [1]));
377
378#ifdef _WIN32
379 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
380#else
381 if (pipe (respipe))
382#endif
383 croak ("unable to initialize result pipe");
384
385 if (old_readfd >= 0)
386 {
387 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
388 croak ("unable to initialize result pipe(2)");
389
390 respipe_close (respipe [0]);
391 respipe [0] = old_readfd;
392 }
393
394#ifdef _WIN32
395 int arg = 1;
396 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
397 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
398#else
399 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
400 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
401#endif
402 croak ("unable to initialize result pipe(3)");
403
404 respipe_osf [0] = TO_SOCKET (respipe [0]);
405 respipe_osf [1] = TO_SOCKET (respipe [1]);
406}
407
408static void poll_wait (void)
409{
410 fd_set rfd;
411
412 while (eio_nreqs ())
413 {
414 int size;
415
416 X_LOCK (reslock);
417 size = res_queue.size;
418 X_UNLOCK (reslock);
419
420 if (size)
421 return;
422
423 etp_maybe_start_thread ();
424
425 FD_ZERO (&rfd);
426 FD_SET (respipe [0], &rfd);
427
428 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
429 }
430}
431
432static int poll_cb (void)
433{
434 for (;;)
435 {
436 int res = eio_poll ();
437
438 if (res > 0)
439 croak (0);
440
441 if (!max_outstanding || max_outstanding > eio_nreqs ())
442 return res;
443
444 poll_wait ();
445 }
446}
447
448static void atfork_child (void)
449{
450 create_respipe ();
451}
452
453#define dREQ \
454 aio_req req; \
455 int req_pri = next_pri; \
456 next_pri = EIO_PRI_DEFAULT; \
457 \
458 if (SvOK (callback) && !SvROK (callback)) \
459 croak ("callback must be undef or of reference type"); \
460 \
461 Newz (0, req, 1, eio_req); \
462 if (!req) \
463 croak ("out of memory during eio_req allocation"); \
464 \
465 req->callback = newSVsv (callback); \
466 req->pri = req_pri
467
468#define REQ_SEND \
469 PUTBACK; \
470 req_submit (req); \
471 SPAGAIN; \
472 \
473 if (GIMME_V != G_VOID) \
474 XPUSHs (req_sv (req, AIO_REQ_KLASS));
475
367MODULE = IO::AIO PACKAGE = IO::AIO 476MODULE = IO::AIO PACKAGE = IO::AIO
368 477
369PROTOTYPES: ENABLE 478PROTOTYPES: ENABLE
370 479
371BOOT: 480BOOT:
372{ 481{
373 if (pipe (respipe)) 482 stash = gv_stashpv ("IO::AIO", 1);
374 croak ("unable to initialize result pipe");
375 483
376 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 484 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
377 croak ("cannot set result pipe to nonblocking mode"); 485 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
486 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
487 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
488 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
489#ifndef _WIN32
490 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
491#endif
378 492
379 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 493 create_respipe ();
380 croak ("cannot set result pipe to nonblocking mode");
381}
382 494
495 if (eio_init (want_poll, done_poll) < 0)
496 croak ("IO::AIO: unable to initialise eio library");
497
498 /* atfork child called in fifo order, so before eio's handler */
499 X_THREAD_ATFORK (0, 0, atfork_child);
500}
501
383void 502void
384min_parallel(nthreads) 503max_poll_reqs (int nreqs)
385 int nthreads
386 PROTOTYPE: $ 504 PROTOTYPE: $
387 CODE: 505 CODE:
388 while (nthreads > started) 506 eio_set_max_poll_reqs (nreqs);
389 start_thread ();
390 507
391void 508void
392max_parallel(nthreads) 509max_poll_time (double nseconds)
393 int nthreads
394 PROTOTYPE: $ 510 PROTOTYPE: $
395 CODE: 511 CODE:
512 eio_set_max_poll_time (nseconds);
513
514void
515min_parallel (int nthreads)
516 PROTOTYPE: $
517 CODE:
518 eio_set_min_parallel (nthreads);
519
520void
521max_parallel (int nthreads)
522 PROTOTYPE: $
523 CODE:
524 eio_set_max_parallel (nthreads);
525
526void
527max_idle (int nthreads)
528 PROTOTYPE: $
529 CODE:
530 eio_set_max_idle (nthreads);
531
532void
533max_outstanding (int maxreqs)
534 PROTOTYPE: $
535 CODE:
536 max_outstanding = maxreqs;
537
538void
539aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
540 PROTOTYPE: $$$;$
541 PPCODE:
396{ 542{
397 int cur = started; 543 dREQ;
398 while (cur > nthreads) 544
399 { 545 req->type = EIO_OPEN;
400 end_thread (); 546 req->sv1 = newSVsv (pathname);
547 req->ptr1 = SvPVbyte_nolen (req->sv1);
548 req->int1 = flags;
549 req->int2 = mode;
550
551 REQ_SEND;
552}
553
554void
555aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
556 PROTOTYPE: $;$
557 ALIAS:
558 aio_fsync = EIO_FSYNC
559 aio_fdatasync = EIO_FDATASYNC
560 PPCODE:
561{
562 dREQ;
563
564 req->type = ix;
565 req->sv1 = newSVsv (fh);
566 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
567
568 REQ_SEND (req);
569}
570
571void
572aio_close (SV *fh, SV *callback=&PL_sv_undef)
573 PROTOTYPE: $;$
574 PPCODE:
575{
576 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
577 dREQ;
578
579 if (close_pipe < 0)
580 {
581 int pipefd [2];
582
583 if (pipe (pipefd) < 0
584 || close (pipefd [1]) < 0
585 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
586 abort (); /*D*/
587
588 close_pipe = pipefd [0];
589 }
590
591 req->type = EIO_DUP2;
592 req->int1 = close_pipe;
593 req->sv2 = newSVsv (fh);
594 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
595
596 REQ_SEND (req);
597}
598
599void
600aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
601 ALIAS:
602 aio_read = EIO_READ
603 aio_write = EIO_WRITE
604 PROTOTYPE: $$$$$;$
605 PPCODE:
606{
607 STRLEN svlen;
608 char *svptr = SvPVbyte (data, svlen);
609 UV len = SvUV (length);
610
611 SvUPGRADE (data, SVt_PV);
612 SvPOK_on (data);
613
614 if (dataoffset < 0)
615 dataoffset += svlen;
616
617 if (dataoffset < 0 || dataoffset > svlen)
618 croak ("dataoffset outside of data scalar");
619
620 if (ix == EIO_WRITE)
621 {
622 /* write: check length and adjust. */
623 if (!SvOK (length) || len + dataoffset > svlen)
624 len = svlen - dataoffset;
625 }
626 else
627 {
628 /* read: grow scalar as necessary */
629 svptr = SvGROW (data, len + dataoffset + 1);
630 }
631
632 if (len < 0)
633 croak ("length must not be negative");
634
635 {
636 dREQ;
637
638 req->type = ix;
639 req->sv1 = newSVsv (fh);
640 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
641 : IoOFP (sv_2io (fh)));
642 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
643 req->size = len;
644 req->sv2 = SvREFCNT_inc (data);
645 req->ptr2 = (char *)svptr + dataoffset;
646 req->stroffset = dataoffset;
647
648 if (!SvREADONLY (data))
401 cur--; 649 {
650 SvREADONLY_on (data);
651 req->flags |= FLAG_SV2_RO_OFF;
402 } 652 }
403 653
404 while (started > nthreads) 654 REQ_SEND;
655 }
656}
657
658void
659aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
660 PROTOTYPE: $$;$
661 PPCODE:
662{
663 SV *data;
664 dREQ;
665
666 req->type = EIO_READLINK;
667 req->sv1 = newSVsv (path);
668 req->ptr1 = SvPVbyte_nolen (req->sv1);
669
670 REQ_SEND;
671}
672
673void
674aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
675 PROTOTYPE: $$$$;$
676 PPCODE:
677{
678 dREQ;
679
680 req->type = EIO_SENDFILE;
681 req->sv1 = newSVsv (out_fh);
682 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
683 req->sv2 = newSVsv (in_fh);
684 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
685 req->offs = SvVAL64 (in_offset);
686 req->size = length;
687
688 REQ_SEND;
689}
690
691void
692aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
693 PROTOTYPE: $$$;$
694 PPCODE:
695{
696 dREQ;
697
698 req->type = EIO_READAHEAD;
699 req->sv1 = newSVsv (fh);
700 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
701 req->offs = SvVAL64 (offset);
702 req->size = length;
703
704 REQ_SEND;
705}
706
707void
708aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
709 ALIAS:
710 aio_stat = EIO_STAT
711 aio_lstat = EIO_LSTAT
712 PPCODE:
713{
714 dREQ;
715
716 req->sv1 = newSVsv (fh_or_path);
717
718 if (SvPOK (req->sv1))
719 {
720 req->type = ix;
721 req->ptr1 = SvPVbyte_nolen (req->sv1);
722 }
723 else
724 {
725 req->type = EIO_FSTAT;
726 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
727 }
728
729 REQ_SEND;
730}
731
732void
733aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
734 PPCODE:
735{
736 dREQ;
737
738 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
739 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
740 req->sv1 = newSVsv (fh_or_path);
741
742 if (SvPOK (req->sv1))
743 {
744 req->type = EIO_UTIME;
745 req->ptr1 = SvPVbyte_nolen (req->sv1);
746 }
747 else
748 {
749 req->type = EIO_FUTIME;
750 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
751 }
752
753 REQ_SEND;
754}
755
756void
757aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
758 PPCODE:
759{
760 dREQ;
761
762 req->sv1 = newSVsv (fh_or_path);
763 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
764
765 if (SvPOK (req->sv1))
766 {
767 req->type = EIO_TRUNCATE;
768 req->ptr1 = SvPVbyte_nolen (req->sv1);
769 }
770 else
771 {
772 req->type = EIO_FTRUNCATE;
773 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
774 }
775
776 REQ_SEND;
777}
778
779void
780aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
781 ALIAS:
782 aio_chmod = EIO_CHMOD
783 aio_mkdir = EIO_MKDIR
784 PPCODE:
785{
786 dREQ;
787
788 req->int2 = mode;
789 req->sv1 = newSVsv (fh_or_path);
790
791 if (SvPOK (req->sv1))
792 {
793 req->type = ix;
794 req->ptr1 = SvPVbyte_nolen (req->sv1);
795 }
796 else
797 {
798 req->type = EIO_FCHMOD;
799 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
800 }
801
802 REQ_SEND;
803}
804
805void
806aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
807 PPCODE:
808{
809 dREQ;
810
811 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
812 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
813 req->sv1 = newSVsv (fh_or_path);
814
815 if (SvPOK (req->sv1))
816 {
817 req->type = EIO_CHOWN;
818 req->ptr1 = SvPVbyte_nolen (req->sv1);
819 }
820 else
821 {
822 req->type = EIO_FCHOWN;
823 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
824 }
825
826 REQ_SEND;
827}
828
829void
830aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
831 ALIAS:
832 aio_unlink = EIO_UNLINK
833 aio_rmdir = EIO_RMDIR
834 aio_readdir = EIO_READDIR
835 PPCODE:
836{
837 dREQ;
838
839 req->type = ix;
840 req->sv1 = newSVsv (pathname);
841 req->ptr1 = SvPVbyte_nolen (req->sv1);
842
843 REQ_SEND;
844}
845
846void
847aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
848 ALIAS:
849 aio_link = EIO_LINK
850 aio_symlink = EIO_SYMLINK
851 aio_rename = EIO_RENAME
852 PPCODE:
853{
854 dREQ;
855
856 req->type = ix;
857 req->sv1 = newSVsv (oldpath);
858 req->ptr1 = SvPVbyte_nolen (req->sv1);
859 req->sv2 = newSVsv (newpath);
860 req->ptr2 = SvPVbyte_nolen (req->sv2);
861
862 REQ_SEND;
863}
864
865void
866aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
867 PPCODE:
868{
869 dREQ;
870
871 req->type = EIO_MKNOD;
872 req->sv1 = newSVsv (pathname);
873 req->ptr1 = SvPVbyte_nolen (req->sv1);
874 req->int2 = (mode_t)mode;
875 req->offs = dev;
876
877 REQ_SEND;
878}
879
880void
881aio_busy (double delay, SV *callback=&PL_sv_undef)
882 PPCODE:
883{
884 dREQ;
885
886 req->type = EIO_BUSY;
887 req->nv1 = delay < 0. ? 0. : delay;
888
889 REQ_SEND;
890}
891
892void
893aio_group (SV *callback=&PL_sv_undef)
894 PROTOTYPE: ;$
895 PPCODE:
896{
897 dREQ;
898
899 req->type = EIO_GROUP;
900
901 eio_submit (req);
902 XPUSHs (req_sv (req, AIO_GRP_KLASS));
903}
904
905void
906aio_nop (SV *callback=&PL_sv_undef)
907 ALIAS:
908 aio_nop = EIO_NOP
909 aio_sync = EIO_SYNC
910 PPCODE:
911{
912 dREQ;
913
914 req->type = ix;
915
916 REQ_SEND;
917}
918
919int
920aioreq_pri (int pri = 0)
921 PROTOTYPE: ;$
922 CODE:
923 RETVAL = next_pri;
924 if (items > 0)
925 {
926 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
927 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
928 next_pri = pri;
929 }
930 OUTPUT:
931 RETVAL
932
933void
934aioreq_nice (int nice = 0)
935 CODE:
936 nice = next_pri - nice;
937 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
938 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
939 next_pri = nice;
940
941void
942flush ()
943 PROTOTYPE:
944 CODE:
945 while (eio_nreqs ())
405 { 946 {
406 poll_wait (); 947 poll_wait ();
407 poll_cb (); 948 poll_cb ();
408 } 949 }
409}
410 950
411int 951int
412max_outstanding(nreqs)
413 int nreqs
414 PROTOTYPE: $
415 CODE:
416 RETVAL = max_outstanding;
417 max_outstanding = nreqs;
418
419void
420aio_open(pathname,flags,mode,callback=&PL_sv_undef)
421 SV * pathname
422 int flags
423 int mode
424 SV * callback
425 PROTOTYPE: $$$;$
426 CODE:
427{
428 aio_req req;
429
430 Newz (0, req, 1, aio_cb);
431
432 if (!req)
433 croak ("out of memory during aio_req allocation");
434
435 req->type = REQ_OPEN;
436 req->data = newSVsv (pathname);
437 req->dataptr = SvPV_nolen (req->data);
438 req->fd = flags;
439 req->mode = mode;
440 req->callback = SvREFCNT_inc (callback);
441
442 send_req (req);
443}
444
445void
446aio_close(fh,callback=&PL_sv_undef)
447 InputStream fh
448 SV * callback
449 PROTOTYPE: $;$
450 ALIAS:
451 aio_close = REQ_CLOSE
452 aio_fsync = REQ_FSYNC
453 aio_fdatasync = REQ_FDATASYNC
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = ix;
464 req->fd = PerlIO_fileno (fh);
465 req->callback = SvREFCNT_inc (callback);
466
467 send_req (req);
468}
469
470void
471aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472 InputStream fh
473 UV offset
474 IV length
475 SV * data
476 IV dataoffset
477 SV * callback
478 PROTOTYPE: $$$$$;$
479 CODE:
480 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
481
482void
483aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
484 OutputStream fh
485 UV offset
486 IV length
487 SV * data
488 IV dataoffset
489 SV * callback
490 PROTOTYPE: $$$$$;$
491 CODE:
492 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
493
494void
495aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496 InputStream fh
497 UV offset
498 IV length
499 SV * callback
500 PROTOTYPE: $$$;$
501 CODE:
502{
503 aio_req req;
504
505 if (length < 0)
506 croak ("length must not be negative");
507
508 Newz (0, req, 1, aio_cb);
509
510 if (!req)
511 croak ("out of memory during aio_req allocation");
512
513 req->type = REQ_READAHEAD;
514 req->fd = PerlIO_fileno (fh);
515 req->offset = offset;
516 req->length = length;
517 req->callback = SvREFCNT_inc (callback);
518
519 send_req (req);
520}
521
522void
523aio_stat(fh_or_path,callback=&PL_sv_undef)
524 SV * fh_or_path
525 SV * callback
526 ALIAS:
527 aio_stat = REQ_STAT
528 aio_lstat = REQ_LSTAT
529 CODE:
530{
531 aio_req req;
532
533 Newz (0, req, 1, aio_cb);
534
535 if (!req)
536 croak ("out of memory during aio_req allocation");
537
538 New (0, req->statdata, 1, Stat_t);
539
540 if (!req->statdata)
541 croak ("out of memory during aio_req->statdata allocation");
542
543 if (SvPOK (fh_or_path))
544 {
545 req->type = ix;
546 req->data = newSVsv (fh_or_path);
547 req->dataptr = SvPV_nolen (req->data);
548 }
549 else
550 {
551 req->type = REQ_FSTAT;
552 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553 }
554
555 req->callback = SvREFCNT_inc (callback);
556
557 send_req (req);
558}
559
560void
561aio_unlink(pathname,callback=&PL_sv_undef)
562 SV * pathname
563 SV * callback
564 CODE:
565{
566 aio_req req;
567
568 Newz (0, req, 1, aio_cb);
569
570 if (!req)
571 croak ("out of memory during aio_req allocation");
572
573 req->type = REQ_UNLINK;
574 req->data = newSVsv (pathname);
575 req->dataptr = SvPV_nolen (req->data);
576 req->callback = SvREFCNT_inc (callback);
577
578 send_req (req);
579}
580
581void
582flush()
583 PROTOTYPE:
584 CODE:
585 while (nreqs)
586 {
587 poll_wait ();
588 poll_cb ();
589 }
590
591void
592poll() 952poll()
593 PROTOTYPE: 953 PROTOTYPE:
594 CODE: 954 CODE:
595 if (nreqs)
596 {
597 poll_wait (); 955 poll_wait ();
598 poll_cb (); 956 RETVAL = poll_cb ();
599 } 957 OUTPUT:
958 RETVAL
600 959
601int 960int
602poll_fileno() 961poll_fileno()
603 PROTOTYPE: 962 PROTOTYPE:
604 CODE: 963 CODE:
… …
616 975
617void 976void
618poll_wait() 977poll_wait()
619 PROTOTYPE: 978 PROTOTYPE:
620 CODE: 979 CODE:
621 if (nreqs)
622 poll_wait (); 980 poll_wait ();
623 981
624int 982int
625nreqs() 983nreqs()
626 PROTOTYPE: 984 PROTOTYPE:
627 CODE: 985 CODE:
628 RETVAL = nreqs; 986 RETVAL = eio_nreqs ();
629 OUTPUT: 987 OUTPUT:
630 RETVAL 988 RETVAL
631 989
990int
991nready()
992 PROTOTYPE:
993 CODE:
994 RETVAL = eio_nready ();
995 OUTPUT:
996 RETVAL
997
998int
999npending()
1000 PROTOTYPE:
1001 CODE:
1002 RETVAL = eio_npending ();
1003 OUTPUT:
1004 RETVAL
1005
1006int
1007nthreads()
1008 PROTOTYPE:
1009 CODE:
1010 RETVAL = eio_nthreads ();
1011 OUTPUT:
1012 RETVAL
1013
1014void _on_next_submit (SV *cb)
1015 CODE:
1016 SvREFCNT_dec (on_next_submit);
1017 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1018
1019PROTOTYPES: DISABLE
1020
1021MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1022
1023void
1024cancel (aio_req_ornot req)
1025 CODE:
1026 eio_cancel (req);
1027
1028void
1029cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1030 CODE:
1031 SvREFCNT_dec (req->callback);
1032 req->callback = newSVsv (callback);
1033
1034MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1035
1036void
1037add (aio_req grp, ...)
1038 PPCODE:
1039{
1040 int i;
1041
1042 if (grp->int1 == 2)
1043 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1044
1045 for (i = 1; i < items; ++i )
1046 {
1047 aio_req req;
1048
1049 if (GIMME_V != G_VOID)
1050 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1051
1052 req = SvAIO_REQ (ST (i));
1053
1054 if (req)
1055 eio_grp_add (grp, req);
1056 }
1057}
1058
1059void
1060cancel_subs (aio_req_ornot req)
1061 CODE:
1062 req_cancel_subs (req);
1063
1064void
1065result (aio_req grp, ...)
1066 CODE:
1067{
1068 int i;
1069 AV *av;
1070
1071 grp->errorno = errno;
1072
1073 av = newAV ();
1074
1075 for (i = 1; i < items; ++i )
1076 av_push (av, newSVsv (ST (i)));
1077
1078 SvREFCNT_dec (grp->sv1);
1079 grp->sv1 = (SV *)av;
1080}
1081
1082void
1083errno (aio_req grp, int errorno = errno)
1084 CODE:
1085 grp->errorno = errorno;
1086
1087void
1088limit (aio_req grp, int limit)
1089 CODE:
1090 eio_grp_limit (grp, limit);
1091
1092void
1093feed (aio_req grp, SV *callback=&PL_sv_undef)
1094 CODE:
1095{
1096 SvREFCNT_dec (grp->sv2);
1097 grp->sv2 = newSVsv (callback);
1098
1099 if (grp->int2 <= 0)
1100 grp->int2 = 2;
1101
1102 eio_grp_limit (grp, grp->int2);
1103}
1104

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines