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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs.
Revision 1.117 by root, Sat May 10 20:02:09 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
5#include "autoconf/config.h" 9#include <stddef.h>
6 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 17
15#include <pthread.h> 18#ifdef _WIN32
16 19
17typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20# define EIO_STRUCT_DIRENT Direntry_t
18typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21# undef malloc
19typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 22# undef free
20 23
21#if __ia64 24// perl overrides all those nice win32 functions
22# define STACKSIZE 65536 25# undef open
26# undef read
27# undef write
28# undef send
29# undef recv
30# undef stat
31# undef fstat
32# define lstat stat
33# undef truncate
34# undef ftruncate
35# undef open
36# undef close
37# undef unlink
38# undef rmdir
39# undef rename
40# undef lseek
41
42# define chown(a,b,c) (errno = ENOSYS, -1)
43# define fchown(a,b,c) (errno = ENOSYS, -1)
44# define fchmod(a,b) (errno = ENOSYS, -1)
45# define symlink(a,b) (errno = ENOSYS, -1)
46# define readlink(a,b,c) (errno = ENOSYS, -1)
47# define mknod(a,b,c) (errno = ENOSYS, -1)
48# define truncate(a,b) (errno = ENOSYS, -1)
49# define ftruncate(fd,o) chsize ((fd), (o))
50# define fsync(fd) _commit (fd)
51# define opendir(fd) (errno = ENOSYS, 0)
52# define readdir(fd) (errno = ENOSYS, -1)
53# define closedir(fd) (errno = ENOSYS, -1)
54# define mkdir(a,b) mkdir (a)
55
23#else 56#else
24# define STACKSIZE 4096 57
58# include <sys/time.h>
59# include <sys/select.h>
60# include <unistd.h>
61# include <utime.h>
62# include <signal.h>
63# define EIO_STRUCT_DIRENT struct dirent
64
25#endif 65#endif
26 66
67#define EIO_STRUCT_STAT Stat_t
68
69/* use NV for 32 bit perls as it allows larger offsets */
70#if IVSIZE >= 8
71# define SvVAL64 SvIV
72#else
73# define SvVAL64 SvNV
74#endif
75
76static HV *stash;
77typedef SV SV8; /* byte-sv, used for argument-checking */
78
79#define AIO_REQ_KLASS "IO::AIO::REQ"
80#define AIO_GRP_KLASS "IO::AIO::GRP"
81
82#define EIO_COMMON \
83 SV *callback; \
84 SV *sv1, *sv2; \
85 STRLEN stroffset; \
86 SV *self
87
88#include "libeio/eio.h"
89
90static int req_invoke (eio_req *req);
91#define EIO_FINISH(req) req_invoke (req)
92static void aio_grp_feed (eio_req *grp);
93#define EIO_FEED(req) aio_grp_feed (req)
94static void req_destroy (eio_req *grp);
95#define EIO_DESTROY(req) req_destroy (req)
96
27enum { 97enum {
28 REQ_QUIT, 98 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
29 REQ_OPEN, REQ_CLOSE,
30 REQ_READ, REQ_WRITE, REQ_READAHEAD,
31 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
32 REQ_FSYNC, REQ_FDATASYNC,
33}; 99};
34 100
35typedef struct aio_cb { 101#include "libeio/eio.c"
36 struct aio_cb *volatile next;
37 102
38 int type;
39
40 int fd;
41 off_t offset;
42 size_t length;
43 ssize_t result;
44 mode_t mode; /* open */
45 int errorno;
46 SV *data, *callback, *fh;
47 void *dataptr;
48 STRLEN dataoffset;
49
50 Stat_t *statdata;
51} aio_cb;
52
53typedef aio_cb *aio_req; 103typedef eio_req *aio_req;
104typedef eio_req *aio_req_ornot;
54 105
55static int started; 106static SV *on_next_submit;
56static volatile int nreqs; 107static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
57static int max_outstanding = 1<<30; 108static int max_outstanding;
58static int respipe [2];
59 109
60static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 110static int respipe_osf [2], respipe [2] = { -1, -1 };
61static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63 111
64static volatile aio_req reqs, reqe; /* queue start, queue end */ 112static void req_destroy (aio_req req);
65static volatile aio_req ress, rese; /* queue start, queue end */ 113static void req_cancel (aio_req req);
66 114
67static void 115static void want_poll (void)
68poll_wait ()
69{ 116{
70 if (nreqs && !ress) 117 /* write a dummy byte to the pipe so fh becomes ready */
118 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
119}
120
121static void done_poll (void)
122{
123 /* read any signals sent by the worker threads */
124 char buf [4];
125 while (respipe_read (respipe [0], buf, 4) == 4)
126 ;
127}
128
129/* must be called at most once */
130static SV *req_sv (aio_req req, const char *klass)
131{
132 if (!req->self)
71 { 133 {
72 fd_set rfd; 134 req->self = (SV *)newHV ();
73 FD_ZERO(&rfd); 135 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
74 FD_SET(respipe [0], &rfd);
75
76 select (respipe [0] + 1, &rfd, 0, 0, 0);
77 } 136 }
78}
79 137
80static int 138 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
81poll_cb () 139}
140
141static aio_req SvAIO_REQ (SV *sv)
142{
143 MAGIC *mg;
144
145 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
146 croak ("object of class " AIO_REQ_KLASS " expected");
147
148 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
149
150 return mg ? (aio_req)mg->mg_ptr : 0;
151}
152
153static void aio_grp_feed (aio_req grp)
154{
155 if (grp->sv2 && SvOK (grp->sv2))
156 {
157 dSP;
158
159 ENTER;
160 SAVETMPS;
161 PUSHMARK (SP);
162 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
163 PUTBACK;
164 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
165 SPAGAIN;
166 FREETMPS;
167 LEAVE;
168 }
169}
170
171static void req_submit (eio_req *req)
172{
173 eio_submit (req);
174
175 if (on_next_submit)
176 {
177 dSP;
178 SV *cb = sv_2mortal (on_next_submit);
179
180 on_next_submit = 0;
181
182 PUSHMARK (SP);
183 PUTBACK;
184 call_sv (cb, G_DISCARD | G_EVAL);
185 }
186}
187
188static int req_invoke (eio_req *req)
82{ 189{
83 dSP; 190 dSP;
84 int count = 0;
85 aio_req req, prv;
86 191
87 pthread_mutex_lock (&reslock); 192 if (req->flags & FLAG_SV2_RO_OFF)
193 SvREADONLY_off (req->sv2);
88 194
89 { 195 if (!EIO_CANCELLED (req) && SvOK (req->callback))
90 /* read any signals sent by the worker threads */
91 char buf [32];
92 while (read (respipe [0], buf, 32) > 0)
93 ;
94 }
95
96 req = ress;
97 ress = rese = 0;
98
99 pthread_mutex_unlock (&reslock);
100
101 while (req)
102 { 196 {
103 nreqs--; 197 ENTER;
198 SAVETMPS;
199 PUSHMARK (SP);
200 EXTEND (SP, 1);
104 201
105 if (req->type == REQ_QUIT) 202 switch (req->type)
106 started--;
107 else
108 { 203 {
109 int errorno = errno; 204 case EIO_READDIR:
110 errno = req->errorno;
111
112 if (req->type == REQ_READ)
113 SvCUR_set (req->data, req->dataoffset
114 + req->result > 0 ? req->result : 0);
115
116 if (req->data)
117 SvREFCNT_dec (req->data);
118
119 if (req->fh)
120 SvREFCNT_dec (req->fh);
121
122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123 { 205 {
124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 206 SV *rv = &PL_sv_undef;
125 PL_laststatval = req->result;
126 PL_statcache = *(req->statdata);
127 207
128 Safefree (req->statdata); 208 if (req->result >= 0)
209 {
210 int i;
211 char *buf = req->ptr2;
212 AV *av = newAV ();
213
214 av_extend (av, req->result - 1);
215
216 for (i = 0; i < req->result; ++i)
217 {
218 SV *sv = newSVpv (buf, 0);
219
220 av_store (av, i, sv);
221 buf += SvCUR (sv) + 1;
222 }
223
224 rv = sv_2mortal (newRV_noinc ((SV *)av));
225 }
226
227 PUSHs (rv);
129 } 228 }
229 break;
130 230
131 ENTER; 231 case EIO_OPEN:
132 PUSHMARK (SP);
133 XPUSHs (sv_2mortal (newSViv (req->result)));
134
135 if (req->type == REQ_OPEN)
136 { 232 {
137 /* convert fd to fh */ 233 /* convert fd to fh */
138 SV *fh; 234 SV *fh = &PL_sv_undef;
139 235
140 PUTBACK; 236 if (req->result >= 0)
141 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 237 {
142 SPAGAIN; 238 GV *gv = (GV *)sv_newmortal ();
239 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
240 char sym [64];
241 int symlen;
242
243 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
244 gv_init (gv, stash, sym, symlen, 0);
143 245
144 fh = SvREFCNT_inc (POPs); 246 symlen = snprintf (
247 sym,
248 sizeof (sym),
249 "%s&=%d",
250 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
251 req->result
252 );
145 253
254 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
255 fh = (SV *)gv;
256 }
257
146 PUSHMARK (SP); 258 PUSHs (fh);
147 XPUSHs (sv_2mortal (fh));
148 } 259 }
149
150 if (SvOK (req->callback))
151 {
152 PUTBACK;
153 call_sv (req->callback, G_VOID | G_EVAL);
154 SPAGAIN;
155 }
156
157 LEAVE;
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno;
163 count++;
164 }
165
166 prv = req;
167 req = req->next;
168 Safefree (prv);
169
170 /* TODO: croak on errors? */
171 }
172
173 return count;
174}
175
176static void *aio_proc(void *arg);
177
178static void
179start_thread (void)
180{
181 sigset_t fullsigset, oldsigset;
182 pthread_t tid;
183 pthread_attr_t attr;
184
185 pthread_attr_init (&attr);
186 pthread_attr_setstacksize (&attr, STACKSIZE);
187 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
188
189 sigfillset (&fullsigset);
190 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
191
192 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
193 started++;
194
195 sigprocmask (SIG_SETMASK, &oldsigset, 0);
196}
197
198static void
199send_req (aio_req req)
200{
201 nreqs++;
202
203 pthread_mutex_lock (&reqlock);
204
205 req->next = 0;
206
207 if (reqe)
208 {
209 reqe->next = req;
210 reqe = req;
211 }
212 else
213 reqe = reqs = req;
214
215 pthread_cond_signal (&reqwait);
216 pthread_mutex_unlock (&reqlock);
217
218 while (nreqs > max_outstanding)
219 {
220 poll_wait ();
221 poll_cb ();
222 }
223}
224
225static void
226end_thread (void)
227{
228 aio_req req;
229 New (0, req, 1, aio_cb);
230 req->type = REQ_QUIT;
231
232 send_req (req);
233}
234
235static void *
236aio_proc (void *thr_arg)
237{
238 aio_req req;
239 int type;
240
241 do
242 {
243 pthread_mutex_lock (&reqlock);
244
245 for (;;)
246 {
247 req = reqs;
248
249 if (reqs)
250 {
251 reqs = reqs->next;
252 if (!reqs) reqe = 0;
253 }
254
255 if (req)
256 break; 260 break;
257 261
258 pthread_cond_wait (&reqwait, &reqlock); 262 case EIO_GROUP:
259 } 263 req->int1 = 2; /* mark group as finished */
260 264
261 pthread_mutex_unlock (&reqlock); 265 if (req->sv1)
262
263 errno = 0; /* strictly unnecessary */
264
265 type = req->type;
266
267 switch (type)
268 { 266 {
269#if HAVE_PREADWRITE 267 int i;
270 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 268 AV *av = (AV *)req->sv1;
271 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272#else
273# error "pread/pwrite cannot be emulated, fix your os"
274#endif
275 269
276#if HAVE_READAHEAD 270 EXTEND (SP, AvFILL (av) + 1);
277 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 271 for (i = 0; i <= AvFILL (av); ++i)
278#else 272 PUSHs (*av_fetch (av, i, 0));
279 // TODO: emulate 273 }
280 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
281#endif
282
283 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
284 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
285 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
286
287 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
288 case REQ_CLOSE: req->result = close (req->fd); break;
289 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
290
291 case REQ_FDATASYNC:
292#if HAVE_FDATASYNC
293 req->result = fdatasync (req->fd); break;
294#endif
295 case REQ_FSYNC: req->result = fsync (req->fd); break;
296
297 case REQ_QUIT:
298 break; 274 break;
299 275
276 case EIO_NOP:
277 case EIO_BUSY:
278 break;
279
280 case EIO_READLINK:
281 if (req->result > 0)
282 {
283 SvCUR_set (req->sv2, req->result);
284 *SvEND (req->sv2) = 0;
285 PUSHs (req->sv2);
286 }
287 break;
288
289 case EIO_STAT:
290 case EIO_LSTAT:
291 case EIO_FSTAT:
292 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
293 PL_laststatval = req->result;
294 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
295 PUSHs (sv_2mortal (newSViv (req->result)));
296 break;
297
298 case EIO_READ:
299 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
300 *SvEND (req->sv2) = 0;
301 PUSHs (sv_2mortal (newSViv (req->result)));
302 break;
303
304 case EIO_DUP2:
305 if (req->result > 0)
306 req->result = 0;
307 /* FALLTHROUGH */
308
300 default: 309 default:
301 req->result = ENOSYS; 310 PUSHs (sv_2mortal (newSViv (req->result)));
302 break; 311 break;
303 } 312 }
304 313
305 req->errorno = errno; 314 errno = req->errorno;
306 315
307 pthread_mutex_lock (&reslock); 316 PUTBACK;
317 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
318 SPAGAIN;
308 319
309 req->next = 0; 320 FREETMPS;
321 LEAVE;
310 322
311 if (rese) 323 PUTBACK;
312 {
313 rese->next = req;
314 rese = req;
315 }
316 else
317 {
318 rese = ress = req;
319
320 /* write a dummy byte to the pipe so fh becomes ready */
321 write (respipe [1], &respipe, 1);
322 }
323
324 pthread_mutex_unlock (&reslock);
325 } 324 }
326 while (type != REQ_QUIT);
327 325
326 return !!SvTRUE (ERRSV);
327}
328
329static void req_destroy (aio_req req)
330{
331 if (req->self)
332 {
333 sv_unmagic (req->self, PERL_MAGIC_ext);
334 SvREFCNT_dec (req->self);
335 }
336
337 SvREFCNT_dec (req->sv1);
338 SvREFCNT_dec (req->sv2);
339 SvREFCNT_dec (req->callback);
340
341 Safefree (req);
342}
343
344static void req_cancel_subs (aio_req grp)
345{
346 aio_req sub;
347
348 if (grp->type != EIO_GROUP)
349 return;
350
351 SvREFCNT_dec (grp->sv2);
352 grp->sv2 = 0;
353
354 eio_grp_cancel (grp);
355}
356
357#ifdef USE_SOCKETS_AS_HANDLES
358# define TO_SOCKET(x) (win32_get_osfhandle (x))
359#else
360# define TO_SOCKET(x) (x)
361#endif
362
363static void
364create_respipe (void)
365{
366 int old_readfd = respipe [0];
367
368 if (respipe [1] >= 0)
369 respipe_close (TO_SOCKET (respipe [1]));
370
371#ifdef _WIN32
372 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
373#else
374 if (pipe (respipe))
375#endif
376 croak ("unable to initialize result pipe");
377
378 if (old_readfd >= 0)
379 {
380 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
381 croak ("unable to initialize result pipe(2)");
382
383 respipe_close (respipe [0]);
384 respipe [0] = old_readfd;
385 }
386
387#ifdef _WIN32
388 int arg = 1;
389 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
390 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
391#else
392 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
393 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
394#endif
395 croak ("unable to initialize result pipe(3)");
396
397 respipe_osf [0] = TO_SOCKET (respipe [0]);
398 respipe_osf [1] = TO_SOCKET (respipe [1]);
399}
400
401static void poll_wait (void)
402{
403 fd_set rfd;
404
405 while (eio_nreqs ())
406 {
407 int size;
408
409 X_LOCK (reslock);
410 size = res_queue.size;
411 X_UNLOCK (reslock);
412
413 if (size)
414 return;
415
416 maybe_start_thread ();
417
418 FD_ZERO (&rfd);
419 FD_SET (respipe [0], &rfd);
420
421 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
422 }
423}
424
425static int poll_cb (void)
426{
427 int res;
428
429 do
430 {
431 res = eio_poll ();
432
433 if (res > 0)
434 croak (0);
435 }
436 while (max_outstanding && max_outstanding <= eio_nreqs ());
437
328 return 0; 438 return res;
329} 439}
330 440
441static void atfork_child (void)
442{
443 create_respipe ();
444}
445
446#define dREQ \
447 aio_req req; \
448 int req_pri = next_pri; \
449 next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
450 \
451 if (SvOK (callback) && !SvROK (callback)) \
452 croak ("callback must be undef or of reference type"); \
453 \
454 Newz (0, req, 1, eio_req); \
455 if (!req) \
456 croak ("out of memory during eio_req allocation"); \
457 \
458 req->callback = newSVsv (callback); \
459 req->pri = req_pri
460
461#define REQ_SEND \
462 req_submit (req); \
463 \
464 if (GIMME_V != G_VOID) \
465 XPUSHs (req_sv (req, AIO_REQ_KLASS));
466
331MODULE = IO::AIO PACKAGE = IO::AIO 467MODULE = IO::AIO PACKAGE = IO::AIO
332 468
333PROTOTYPES: ENABLE 469PROTOTYPES: ENABLE
334 470
335BOOT: 471BOOT:
336{ 472{
337 if (pipe (respipe)) 473 stash = gv_stashpv ("IO::AIO", 1);
338 croak ("unable to initialize result pipe");
339 474
340 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 475 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
341 croak ("cannot set result pipe to nonblocking mode"); 476 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
477 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
478 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
479 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
480#ifdef _WIN32
481 X_MUTEX_CHECK (wrklock);
482 X_MUTEX_CHECK (reslock);
483 X_MUTEX_CHECK (reqlock);
484 X_MUTEX_CHECK (reqwait);
485 X_MUTEX_CHECK (preadwritelock);
486 X_MUTEX_CHECK (readdirlock);
342 487
343 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 488 X_COND_CHECK (reqwait);
344 croak ("cannot set result pipe to nonblocking mode"); 489#else
345} 490 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
491#endif
346 492
493 create_respipe ();
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
347void 502void
348min_parallel(nthreads) 503max_poll_reqs (int nreqs)
349 int nthreads
350 PROTOTYPE: $ 504 PROTOTYPE: $
351 CODE: 505 CODE:
352 while (nthreads > started) 506 eio_set_max_poll_reqs (nreqs);
353 start_thread ();
354 507
355void 508void
356max_parallel(nthreads) 509max_poll_time (double nseconds)
357 int nthreads
358 PROTOTYPE: $ 510 PROTOTYPE: $
359 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: $$$;$
541 PPCODE:
360{ 542{
361 int cur = started; 543 dREQ;
362 while (cur > nthreads) 544
363 { 545 req->type = EIO_OPEN;
364 end_thread (); 546 req->sv1 = newSVsv (pathname);
547 req->ptr1 = SvPVbyte_nolen (req->sv1);
548 req->int1 = flags;
549 req->int2 = mode;
550
551 REQ_SEND;
552}
553
554void
555aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
556 PROTOTYPE: $;$
557 ALIAS:
558 aio_fsync = EIO_FSYNC
559 aio_fdatasync = EIO_FDATASYNC
560 PPCODE:
561{
562 dREQ;
563
564 req->type = ix;
565 req->sv1 = newSVsv (fh);
566 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
567
568 REQ_SEND (req);
569}
570
571void
572aio_close (SV *fh, SV *callback=&PL_sv_undef)
573 PROTOTYPE: $;$
574 PPCODE:
575{
576 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
577 dREQ;
578
579 if (close_pipe < 0)
580 {
581 int pipefd [2];
582
583 if (pipe (pipefd) < 0
584 || close (pipefd [1]) < 0
585 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
586 abort (); /*D*/
587
588 close_pipe = pipefd [0];
589 }
590
591 req->type = EIO_DUP2;
592 req->int1 = close_pipe;
593 req->sv2 = newSVsv (fh);
594 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
595
596 REQ_SEND (req);
597}
598
599void
600aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
601 ALIAS:
602 aio_read = EIO_READ
603 aio_write = EIO_WRITE
604 PROTOTYPE: $$$$$;$
605 PPCODE:
606{
607 STRLEN svlen;
608 char *svptr = SvPVbyte (data, svlen);
609 UV len = SvUV (length);
610
611 SvUPGRADE (data, SVt_PV);
612 SvPOK_on (data);
613
614 if (dataoffset < 0)
615 dataoffset += svlen;
616
617 if (dataoffset < 0 || dataoffset > svlen)
618 croak ("dataoffset outside of data scalar");
619
620 if (ix == EIO_WRITE)
621 {
622 /* write: check length and adjust. */
623 if (!SvOK (length) || len + dataoffset > svlen)
624 len = svlen - dataoffset;
625 }
626 else
627 {
628 /* read: grow scalar as necessary */
629 svptr = SvGROW (data, len + dataoffset + 1);
630 }
631
632 if (len < 0)
633 croak ("length must not be negative");
634
635 {
636 dREQ;
637
638 req->type = ix;
639 req->sv1 = newSVsv (fh);
640 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
641 : IoOFP (sv_2io (fh)));
642 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
643 req->size = len;
644 req->sv2 = SvREFCNT_inc (data);
645 req->ptr2 = (char *)svptr + dataoffset;
646 req->stroffset = dataoffset;
647
648 if (!SvREADONLY (data))
365 cur--; 649 {
650 SvREADONLY_on (data);
651 req->flags |= FLAG_SV2_RO_OFF;
366 } 652 }
367 653
368 while (started > nthreads) 654 REQ_SEND;
655 }
656}
657
658void
659aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
660 PROTOTYPE: $$;$
661 PPCODE:
662{
663 SV *data;
664 dREQ;
665
666 data = newSV (NAME_MAX);
667 SvPOK_on (data);
668
669 req->type = EIO_READLINK;
670 req->sv1 = newSVsv (path);
671 req->ptr1 = SvPVbyte_nolen (req->sv1);
672 req->sv2 = data;
673 req->ptr2 = SvPVbyte_nolen (data);
674
675 REQ_SEND;
676}
677
678void
679aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
680 PROTOTYPE: $$$$;$
681 PPCODE:
682{
683 dREQ;
684
685 req->type = EIO_SENDFILE;
686 req->sv1 = newSVsv (out_fh);
687 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
688 req->sv2 = newSVsv (in_fh);
689 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
690 req->offs = SvVAL64 (in_offset);
691 req->size = length;
692
693 REQ_SEND;
694}
695
696void
697aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
698 PROTOTYPE: $$$;$
699 PPCODE:
700{
701 dREQ;
702
703 req->type = EIO_READAHEAD;
704 req->sv1 = newSVsv (fh);
705 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
706 req->offs = SvVAL64 (offset);
707 req->size = length;
708
709 REQ_SEND;
710}
711
712void
713aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
714 ALIAS:
715 aio_stat = EIO_STAT
716 aio_lstat = EIO_LSTAT
717 PPCODE:
718{
719 dREQ;
720
721 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
722 if (!req->ptr2)
723 {
724 req_destroy (req);
725 croak ("out of memory during aio_stat statdata allocation");
726 }
727
728 req->flags |= EIO_FLAG_PTR2_FREE;
729 req->sv1 = newSVsv (fh_or_path);
730
731 if (SvPOK (fh_or_path))
732 {
733 req->type = ix;
734 req->ptr1 = SvPVbyte_nolen (req->sv1);
735 }
736 else
737 {
738 req->type = EIO_FSTAT;
739 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
740 }
741
742 REQ_SEND;
743}
744
745void
746aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
747 PPCODE:
748{
749 dREQ;
750
751 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
752 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
753 req->sv1 = newSVsv (fh_or_path);
754
755 if (SvPOK (fh_or_path))
756 {
757 req->type = EIO_UTIME;
758 req->ptr1 = SvPVbyte_nolen (req->sv1);
759 }
760 else
761 {
762 req->type = EIO_FUTIME;
763 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
764 }
765
766 REQ_SEND;
767}
768
769void
770aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
771 PPCODE:
772{
773 dREQ;
774
775 req->sv1 = newSVsv (fh_or_path);
776 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
777
778 if (SvPOK (fh_or_path))
779 {
780 req->type = EIO_TRUNCATE;
781 req->ptr1 = SvPVbyte_nolen (req->sv1);
782 }
783 else
784 {
785 req->type = EIO_FTRUNCATE;
786 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
787 }
788
789 REQ_SEND;
790}
791
792void
793aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
794 ALIAS:
795 aio_chmod = EIO_CHMOD
796 aio_fchmod = EIO_FCHMOD
797 aio_mkdir = EIO_MKDIR
798 PPCODE:
799{
800 dREQ;
801
802 req->type = ix;
803 req->int2 = mode;
804 req->sv1 = newSVsv (fh_or_path);
805
806 if (ix == EIO_FCHMOD)
807 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
808 else
809 req->ptr1 = SvPVbyte_nolen (req->sv1);
810
811 REQ_SEND;
812}
813
814void
815aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
816 PPCODE:
817{
818 dREQ;
819
820 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
821 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
822 req->sv1 = newSVsv (fh_or_path);
823
824 if (SvPOK (fh_or_path))
825 {
826 req->type = EIO_CHOWN;
827 req->ptr1 = SvPVbyte_nolen (req->sv1);
828 }
829 else
830 {
831 req->type = EIO_FCHOWN;
832 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
833 }
834
835 REQ_SEND;
836}
837
838void
839aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
840 ALIAS:
841 aio_unlink = EIO_UNLINK
842 aio_rmdir = EIO_RMDIR
843 aio_readdir = EIO_READDIR
844 PPCODE:
845{
846 dREQ;
847
848 req->type = ix;
849 req->sv1 = newSVsv (pathname);
850 req->ptr1 = SvPVbyte_nolen (req->sv1);
851
852 REQ_SEND;
853}
854
855void
856aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
857 ALIAS:
858 aio_link = EIO_LINK
859 aio_symlink = EIO_SYMLINK
860 aio_rename = EIO_RENAME
861 PPCODE:
862{
863 dREQ;
864
865 req->type = ix;
866 req->sv1 = newSVsv (oldpath);
867 req->ptr1 = SvPVbyte_nolen (req->sv1);
868 req->sv2 = newSVsv (newpath);
869 req->ptr2 = SvPVbyte_nolen (req->sv2);
870
871 REQ_SEND;
872}
873
874void
875aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
876 PPCODE:
877{
878 dREQ;
879
880 req->type = EIO_MKNOD;
881 req->sv1 = newSVsv (pathname);
882 req->ptr1 = SvPVbyte_nolen (req->sv1);
883 req->int2 = (mode_t)mode;
884 req->offs = dev;
885
886 REQ_SEND;
887}
888
889void
890aio_busy (double delay, SV *callback=&PL_sv_undef)
891 PPCODE:
892{
893 dREQ;
894
895 req->type = EIO_BUSY;
896 req->nv1 = delay < 0. ? 0. : delay;
897
898 REQ_SEND;
899}
900
901void
902aio_group (SV *callback=&PL_sv_undef)
903 PROTOTYPE: ;$
904 PPCODE:
905{
906 dREQ;
907
908 req->type = EIO_GROUP;
909
910 eio_submit (req);
911 XPUSHs (req_sv (req, AIO_GRP_KLASS));
912}
913
914void
915aio_nop (SV *callback=&PL_sv_undef)
916 ALIAS:
917 aio_nop = EIO_NOP
918 aio_sync = EIO_SYNC
919 PPCODE:
920{
921 dREQ;
922
923 req->type = ix;
924
925 REQ_SEND;
926}
927
928int
929aioreq_pri (int pri = 0)
930 PROTOTYPE: ;$
931 CODE:
932 RETVAL = next_pri - EIO_PRI_BIAS;
933 if (items > 0)
934 {
935 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
936 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
937 next_pri = pri + EIO_PRI_BIAS;
938 }
939 OUTPUT:
940 RETVAL
941
942void
943aioreq_nice (int nice = 0)
944 CODE:
945 nice = next_pri - nice;
946 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
947 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
948 next_pri = nice + EIO_PRI_BIAS;
949
950void
951flush ()
952 PROTOTYPE:
953 CODE:
954 while (eio_nreqs ())
369 { 955 {
370 poll_wait (); 956 poll_wait ();
371 poll_cb (); 957 poll_cb ();
372 } 958 }
373}
374 959
375int 960int
376max_outstanding(nreqs)
377 int nreqs
378 PROTOTYPE: $
379 CODE:
380 RETVAL = max_outstanding;
381 max_outstanding = nreqs;
382
383void
384aio_open(pathname,flags,mode,callback=&PL_sv_undef)
385 SV * pathname
386 int flags
387 int mode
388 SV * callback
389 PROTOTYPE: $$$;$
390 CODE:
391{
392 aio_req req;
393
394 Newz (0, req, 1, aio_cb);
395
396 if (!req)
397 croak ("out of memory during aio_req allocation");
398
399 req->type = REQ_OPEN;
400 req->data = newSVsv (pathname);
401 req->dataptr = SvPV_nolen (req->data);
402 req->fd = flags;
403 req->mode = mode;
404 req->callback = SvREFCNT_inc (callback);
405
406 send_req (req);
407}
408
409void
410aio_close(fh,callback=&PL_sv_undef)
411 SV * fh
412 SV * callback
413 PROTOTYPE: $;$
414 ALIAS:
415 aio_close = REQ_CLOSE
416 aio_fsync = REQ_FSYNC
417 aio_fdatasync = REQ_FDATASYNC
418 CODE:
419{
420 aio_req req;
421
422 Newz (0, req, 1, aio_cb);
423
424 if (!req)
425 croak ("out of memory during aio_req allocation");
426
427 req->type = ix;
428 req->fh = newSVsv (fh);
429 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
430 req->callback = SvREFCNT_inc (callback);
431
432 send_req (req);
433}
434
435void
436aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
437 SV * fh
438 UV offset
439 IV length
440 SV * data
441 IV dataoffset
442 SV * callback
443 ALIAS:
444 aio_read = REQ_READ
445 aio_write = REQ_WRITE
446 PROTOTYPE: $$$$$;$
447 CODE:
448{
449 aio_req req;
450 STRLEN svlen;
451 char *svptr = SvPV (data, svlen);
452
453 SvUPGRADE (data, SVt_PV);
454 SvPOK_on (data);
455
456 if (dataoffset < 0)
457 dataoffset += svlen;
458
459 if (dataoffset < 0 || dataoffset > svlen)
460 croak ("data offset outside of string");
461
462 if (ix == REQ_WRITE)
463 {
464 /* write: check length and adjust. */
465 if (length < 0 || length + dataoffset > svlen)
466 length = svlen - dataoffset;
467 }
468 else
469 {
470 /* read: grow scalar as necessary */
471 svptr = SvGROW (data, length + dataoffset);
472 }
473
474 if (length < 0)
475 croak ("length must not be negative");
476
477 Newz (0, req, 1, aio_cb);
478
479 if (!req)
480 croak ("out of memory during aio_req allocation");
481
482 req->type = ix;
483 req->fh = newSVsv (fh);
484 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
485 : IoOFP (sv_2io (fh)));
486 req->offset = offset;
487 req->length = length;
488 req->data = SvREFCNT_inc (data);
489 req->dataptr = (char *)svptr + dataoffset;
490 req->callback = SvREFCNT_inc (callback);
491
492 send_req (req);
493}
494
495void
496aio_readahead(fh,offset,length,callback=&PL_sv_undef)
497 SV * fh
498 UV offset
499 IV length
500 SV * callback
501 PROTOTYPE: $$$;$
502 CODE:
503{
504 aio_req req;
505
506 if (length < 0)
507 croak ("length must not be negative");
508
509 Newz (0, req, 1, aio_cb);
510
511 if (!req)
512 croak ("out of memory during aio_req allocation");
513
514 req->type = REQ_READAHEAD;
515 req->fh = newSVsv (fh);
516 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
517 req->offset = offset;
518 req->length = length;
519 req->callback = SvREFCNT_inc (callback);
520
521 send_req (req);
522}
523
524void
525aio_stat(fh_or_path,callback=&PL_sv_undef)
526 SV * fh_or_path
527 SV * callback
528 ALIAS:
529 aio_stat = REQ_STAT
530 aio_lstat = REQ_LSTAT
531 CODE:
532{
533 aio_req req;
534
535 Newz (0, req, 1, aio_cb);
536
537 if (!req)
538 croak ("out of memory during aio_req allocation");
539
540 New (0, req->statdata, 1, Stat_t);
541
542 if (!req->statdata)
543 croak ("out of memory during aio_req->statdata allocation");
544
545 if (SvPOK (fh_or_path))
546 {
547 req->type = ix;
548 req->data = newSVsv (fh_or_path);
549 req->dataptr = SvPV_nolen (req->data);
550 }
551 else
552 {
553 req->type = REQ_FSTAT;
554 req->fh = newSVsv (fh_or_path);
555 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
556 }
557
558 req->callback = SvREFCNT_inc (callback);
559
560 send_req (req);
561}
562
563void
564aio_unlink(pathname,callback=&PL_sv_undef)
565 SV * pathname
566 SV * callback
567 CODE:
568{
569 aio_req req;
570
571 Newz (0, req, 1, aio_cb);
572
573 if (!req)
574 croak ("out of memory during aio_req allocation");
575
576 req->type = REQ_UNLINK;
577 req->data = newSVsv (pathname);
578 req->dataptr = SvPV_nolen (req->data);
579 req->callback = SvREFCNT_inc (callback);
580
581 send_req (req);
582}
583
584void
585flush()
586 PROTOTYPE:
587 CODE:
588 while (nreqs)
589 {
590 poll_wait ();
591 poll_cb ();
592 }
593
594void
595poll() 961poll()
596 PROTOTYPE: 962 PROTOTYPE:
597 CODE: 963 CODE:
598 if (nreqs)
599 {
600 poll_wait (); 964 poll_wait ();
601 poll_cb (); 965 RETVAL = poll_cb ();
602 } 966 OUTPUT:
967 RETVAL
603 968
604int 969int
605poll_fileno() 970poll_fileno()
606 PROTOTYPE: 971 PROTOTYPE:
607 CODE: 972 CODE:
… …
619 984
620void 985void
621poll_wait() 986poll_wait()
622 PROTOTYPE: 987 PROTOTYPE:
623 CODE: 988 CODE:
624 if (nreqs)
625 poll_wait (); 989 poll_wait ();
626 990
627int 991int
628nreqs() 992nreqs()
629 PROTOTYPE: 993 PROTOTYPE:
630 CODE: 994 CODE:
631 RETVAL = nreqs; 995 RETVAL = eio_nreqs ();
632 OUTPUT: 996 OUTPUT:
633 RETVAL 997 RETVAL
634 998
999int
1000nready()
1001 PROTOTYPE:
1002 CODE:
1003 RETVAL = eio_nready ();
1004 OUTPUT:
1005 RETVAL
1006
1007int
1008npending()
1009 PROTOTYPE:
1010 CODE:
1011 RETVAL = eio_npending ();
1012 OUTPUT:
1013 RETVAL
1014
1015int
1016nthreads()
1017 PROTOTYPE:
1018 CODE:
1019 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1020 RETVAL = started;
1021 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1022 OUTPUT:
1023 RETVAL
1024
1025void _on_next_submit (SV *cb)
1026 CODE:
1027 SvREFCNT_dec (on_next_submit);
1028 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1029
1030PROTOTYPES: DISABLE
1031
1032MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1033
1034void
1035cancel (aio_req_ornot req)
1036 CODE:
1037 eio_cancel (req);
1038
1039void
1040cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1041 CODE:
1042 SvREFCNT_dec (req->callback);
1043 req->callback = newSVsv (callback);
1044
1045MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1046
1047void
1048add (aio_req grp, ...)
1049 PPCODE:
1050{
1051 int i;
1052
1053 if (grp->int1 == 2)
1054 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1055
1056 for (i = 1; i < items; ++i )
1057 {
1058 aio_req req;
1059
1060 if (GIMME_V != G_VOID)
1061 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1062
1063 req = SvAIO_REQ (ST (i));
1064
1065 if (req)
1066 eio_grp_add (grp, req);
1067 }
1068}
1069
1070void
1071cancel_subs (aio_req_ornot req)
1072 CODE:
1073 req_cancel_subs (req);
1074
1075void
1076result (aio_req grp, ...)
1077 CODE:
1078{
1079 int i;
1080 AV *av;
1081
1082 grp->errorno = errno;
1083
1084 av = newAV ();
1085
1086 for (i = 1; i < items; ++i )
1087 av_push (av, newSVsv (ST (i)));
1088
1089 SvREFCNT_dec (grp->sv1);
1090 grp->sv1 = (SV *)av;
1091}
1092
1093void
1094errno (aio_req grp, int errorno = errno)
1095 CODE:
1096 grp->errorno = errorno;
1097
1098void
1099limit (aio_req grp, int limit)
1100 CODE:
1101 eio_grp_limit (grp, limit);
1102
1103void
1104feed (aio_req grp, SV *callback=&PL_sv_undef)
1105 CODE:
1106{
1107 SvREFCNT_dec (grp->sv2);
1108 grp->sv2 = newSVsv (callback);
1109
1110 if (grp->int2 <= 0)
1111 grp->int2 = 2;
1112
1113 eio_grp_limit (grp, grp->int2);
1114}
1115

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