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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.10 by root, Wed Jul 13 00:13:09 2005 UTC vs.
Revision 1.123 by root, Sat May 17 12:17:25 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#define _XOPEN_SOURCE 500 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#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#define EIO_STRUCT_STAT Stat_t
19 71
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 72/* use NV for 32 bit perls as it allows larger offsets */
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 73#if IVSIZE >= 8
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 74# define SvVAL64 SvIV
23
24#if __ia64
25# define STACKSIZE 65536
26#else 75#else
27# define STACKSIZE 4096 76# define SvVAL64 SvNV
28#endif 77#endif
29 78
79static HV *stash;
80typedef SV SV8; /* byte-sv, used for argument-checking */
81
82#define AIO_REQ_KLASS "IO::AIO::REQ"
83#define AIO_GRP_KLASS "IO::AIO::GRP"
84
85#define EIO_REQ_MEMBERS \
86 SV *callback; \
87 SV *sv1, *sv2; \
88 STRLEN stroffset; \
89 SV *self;
90
91#define EIO_NO_WRAPPERS 1
92
93#include "libeio/eio.h"
94
95static int req_invoke (eio_req *req);
96#define EIO_FINISH(req) req_invoke (req)
97static void aio_grp_feed (eio_req *grp);
98#define EIO_FEED(req) aio_grp_feed (req)
99static void req_destroy (eio_req *grp);
100#define EIO_DESTROY(req) req_destroy (req)
101
30enum { 102enum {
31 REQ_QUIT, 103 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}; 104};
37 105
38typedef struct aio_cb { 106#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 107
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; 108typedef eio_req *aio_req;
109typedef eio_req *aio_req_ornot;
57 110
58static int started; 111static SV *on_next_submit;
59static int nreqs; 112static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 113static int max_outstanding;
61static int respipe [2];
62 114
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 115static int respipe_osf [2], respipe [2] = { -1, -1 };
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 116
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 117static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 118static void req_cancel (aio_req req);
69 119
70static void 120static void want_poll (void)
71poll_wait ()
72{ 121{
122 /* write a dummy byte to the pipe so fh becomes ready */
123 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
124}
125
126static void done_poll (void)
127{
128 /* read any signals sent by the worker threads */
129 char buf [4];
130 while (respipe_read (respipe [0], buf, 4) == 4)
131 ;
132}
133
134/* must be called at most once */
135static SV *req_sv (aio_req req, const char *klass)
136{
73 if (!nreqs) 137 if (!req->self)
74 return; 138 {
139 req->self = (SV *)newHV ();
140 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
141 }
75 142
76 fd_set rfd; 143 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
77 FD_ZERO(&rfd);
78 FD_SET(respipe [0], &rfd);
79
80 select (respipe [0] + 1, &rfd, 0, 0, 0);
81} 144}
82 145
83static int 146static aio_req SvAIO_REQ (SV *sv)
84poll_cb () 147{
148 MAGIC *mg;
149
150 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
151 croak ("object of class " AIO_REQ_KLASS " expected");
152
153 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
154
155 return mg ? (aio_req)mg->mg_ptr : 0;
156}
157
158static void aio_grp_feed (aio_req grp)
159{
160 if (grp->sv2 && SvOK (grp->sv2))
161 {
162 dSP;
163
164 ENTER;
165 SAVETMPS;
166 PUSHMARK (SP);
167 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
168 PUTBACK;
169 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
170 SPAGAIN;
171 FREETMPS;
172 LEAVE;
173 }
174}
175
176static void req_submit (eio_req *req)
177{
178 eio_submit (req);
179
180 if (on_next_submit)
181 {
182 dSP;
183 SV *cb = sv_2mortal (on_next_submit);
184
185 on_next_submit = 0;
186
187 PUSHMARK (SP);
188 PUTBACK;
189 call_sv (cb, G_DISCARD | G_EVAL);
190 }
191}
192
193static int req_invoke (eio_req *req)
85{ 194{
86 dSP; 195 dSP;
87 int count = 0;
88 aio_req req;
89
90 {
91 /* read and signals sent by the worker threads */
92 char buf [32];
93 while (read (respipe [0], buf, 32) > 0)
94 ;
95 }
96 196
97 for (;;) 197 if (req->flags & FLAG_SV2_RO_OFF)
198 SvREADONLY_off (req->sv2);
199
200 if (!EIO_CANCELLED (req) && SvOK (req->callback))
98 { 201 {
99 pthread_mutex_lock (&reslock); 202 ENTER;
203 SAVETMPS;
204 PUSHMARK (SP);
205 EXTEND (SP, 1);
100 206
101 req = ress; 207 switch (req->type)
102
103 if (ress)
104 { 208 {
105 ress = ress->next; 209 case EIO_READDIR:
106 if (!ress) rese = 0;
107 }
108
109 pthread_mutex_unlock (&reslock);
110
111 if (!req)
112 break;
113
114 nreqs--;
115
116 if (req->type == REQ_QUIT)
117 started--;
118 else
119 {
120 int errorno = errno;
121 errno = req->errorno;
122
123 if (req->type == REQ_READ)
124 SvCUR_set (req->data, req->dataoffset
125 + req->result > 0 ? req->result : 0);
126
127 if (req->data)
128 SvREFCNT_dec (req->data);
129
130 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
131 { 210 {
132 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 211 SV *rv = &PL_sv_undef;
133 PL_laststatval = req->result;
134 PL_statcache = *(req->statdata);
135 212
136 Safefree (req->statdata); 213 if (req->result >= 0)
214 {
215 int i;
216 char *buf = req->ptr2;
217 AV *av = newAV ();
218
219 av_extend (av, req->result - 1);
220
221 for (i = 0; i < req->result; ++i)
222 {
223 SV *sv = newSVpv (buf, 0);
224
225 av_store (av, i, sv);
226 buf += SvCUR (sv) + 1;
227 }
228
229 rv = sv_2mortal (newRV_noinc ((SV *)av));
230 }
231
232 PUSHs (rv);
137 } 233 }
234 break;
138 235
139 PUSHMARK (SP); 236 case EIO_OPEN:
140 XPUSHs (sv_2mortal (newSViv (req->result)));
141
142 if (req->type == REQ_OPEN)
143 { 237 {
144 /* convert fd to fh */ 238 /* convert fd to fh */
145 SV *fh; 239 SV *fh = &PL_sv_undef;
146 240
147 PUTBACK; 241 if (req->result >= 0)
148 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 242 {
149 SPAGAIN; 243 GV *gv = (GV *)sv_newmortal ();
244 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
245 char sym [64];
246 int symlen;
247
248 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
249 gv_init (gv, stash, sym, symlen, 0);
150 250
151 fh = POPs; 251 symlen = snprintf (
252 sym,
253 sizeof (sym),
254 "%s&=%d",
255 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
256 req->result
257 );
152 258
153 PUSHMARK (SP); 259 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
260 fh = (SV *)gv;
261 }
262
154 XPUSHs (fh); 263 PUSHs (fh);
155 } 264 }
156
157 if (SvOK (req->callback))
158 {
159 PUTBACK;
160 call_sv (req->callback, G_VOID | G_EVAL);
161 SPAGAIN;
162 }
163
164 if (req->callback)
165 SvREFCNT_dec (req->callback);
166
167 errno = errorno;
168 count++;
169 }
170
171 Safefree (req);
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
237read_write (int dowrite, int fd, off_t offset, size_t length,
238 SV *data, STRLEN dataoffset, SV *callback)
239{
240 aio_req req;
241 STRLEN svlen;
242 char *svptr = SvPV (data, svlen);
243
244 SvUPGRADE (data, SVt_PV);
245 SvPOK_on (data);
246
247 if (dataoffset < 0)
248 dataoffset += svlen;
249
250 if (dataoffset < 0 || dataoffset > svlen)
251 croak ("data offset outside of string");
252
253 if (dowrite)
254 {
255 /* write: check length and adjust. */
256 if (length < 0 || length + dataoffset > svlen)
257 length = svlen - dataoffset;
258 }
259 else
260 {
261 /* read: grow scalar as necessary */
262 svptr = SvGROW (data, length + dataoffset);
263 }
264
265 if (length < 0)
266 croak ("length must not be negative");
267
268 Newz (0, req, 1, aio_cb);
269
270 if (!req)
271 croak ("out of memory during aio_req allocation");
272
273 req->type = dowrite ? REQ_WRITE : REQ_READ;
274 req->fd = fd;
275 req->offset = offset;
276 req->length = length;
277 req->data = SvREFCNT_inc (data);
278 req->dataptr = (char *)svptr + dataoffset;
279 req->callback = SvREFCNT_inc (callback);
280
281 send_req (req);
282}
283
284static void *
285aio_proc (void *thr_arg)
286{
287 aio_req req;
288 int type;
289
290 do
291 {
292 pthread_mutex_lock (&reqlock);
293
294 for (;;)
295 {
296 req = reqs;
297
298 if (reqs)
299 {
300 reqs = reqs->next;
301 if (!reqs) reqe = 0;
302 }
303
304 if (req)
305 break; 265 break;
306 266
307 pthread_cond_wait (&reqwait, &reqlock); 267 case EIO_GROUP:
308 } 268 req->int1 = 2; /* mark group as finished */
309 269
310 pthread_mutex_unlock (&reqlock); 270 if (req->sv1)
311
312 errno = 0; /* strictly unnecessary */
313
314 type = req->type;
315
316 switch (type)
317 { 271 {
318 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 272 int i;
319 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 273 AV *av = (AV *)req->sv1;
320#if SYS_readahead
321 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
322#else
323 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
324#endif
325 274
326 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 275 EXTEND (SP, AvFILL (av) + 1);
327 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 276 for (i = 0; i <= AvFILL (av); ++i)
328 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 277 PUSHs (*av_fetch (av, i, 0));
329 278 }
330 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
331 case REQ_CLOSE: req->result = close (req->fd); break;
332 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
333
334 case REQ_FSYNC: req->result = fsync (req->fd); break;
335 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
336
337 case REQ_QUIT:
338 break; 279 break;
339 280
281 case EIO_NOP:
282 case EIO_BUSY:
283 break;
284
285 case EIO_READLINK:
286 if (req->result > 0)
287 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
288 break;
289
290 case EIO_STAT:
291 case EIO_LSTAT:
292 case EIO_FSTAT:
293 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
294 PL_laststatval = req->result;
295 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
296 PUSHs (sv_2mortal (newSViv (req->result)));
297 break;
298
299 case EIO_READ:
300 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
301 *SvEND (req->sv2) = 0;
302 PUSHs (sv_2mortal (newSViv (req->result)));
303 break;
304
305 case EIO_DUP2:
306 if (req->result > 0)
307 req->result = 0;
308 /* FALLTHROUGH */
309
340 default: 310 default:
341 req->result = ENOSYS; 311 PUSHs (sv_2mortal (newSViv (req->result)));
342 break; 312 break;
343 } 313 }
344 314
345 req->errorno = errno; 315 errno = req->errorno;
346 316
347 pthread_mutex_lock (&reslock); 317 PUTBACK;
318 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
319 SPAGAIN;
348 320
349 req->next = 0; 321 FREETMPS;
322 LEAVE;
350 323
351 if (rese) 324 PUTBACK;
352 {
353 rese->next = req;
354 rese = req;
355 }
356 else
357 {
358 rese = ress = req;
359
360 /* write a dummy byte to the pipe so fh becomes ready */
361 write (respipe [1], &respipe, 1);
362 }
363
364 pthread_mutex_unlock (&reslock);
365 } 325 }
366 while (type != REQ_QUIT);
367 326
327 return !!SvTRUE (ERRSV);
328}
329
330static void req_destroy (aio_req req)
331{
332 if (req->self)
333 {
334 sv_unmagic (req->self, PERL_MAGIC_ext);
335 SvREFCNT_dec (req->self);
336 }
337
338 SvREFCNT_dec (req->sv1);
339 SvREFCNT_dec (req->sv2);
340 SvREFCNT_dec (req->callback);
341
342 Safefree (req);
343}
344
345static void req_cancel_subs (aio_req grp)
346{
347 aio_req sub;
348
349 if (grp->type != EIO_GROUP)
350 return;
351
352 SvREFCNT_dec (grp->sv2);
353 grp->sv2 = 0;
354
355 eio_grp_cancel (grp);
356}
357
358#ifdef USE_SOCKETS_AS_HANDLES
359# define TO_SOCKET(x) (win32_get_osfhandle (x))
360#else
361# define TO_SOCKET(x) (x)
362#endif
363
364static void
365create_respipe (void)
366{
367 int old_readfd = respipe [0];
368
369 if (respipe [1] >= 0)
370 respipe_close (TO_SOCKET (respipe [1]));
371
372#ifdef _WIN32
373 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
374#else
375 if (pipe (respipe))
376#endif
377 croak ("unable to initialize result pipe");
378
379 if (old_readfd >= 0)
380 {
381 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
382 croak ("unable to initialize result pipe(2)");
383
384 respipe_close (respipe [0]);
385 respipe [0] = old_readfd;
386 }
387
388#ifdef _WIN32
389 int arg = 1;
390 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
391 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
392#else
393 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
394 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
395#endif
396 croak ("unable to initialize result pipe(3)");
397
398 respipe_osf [0] = TO_SOCKET (respipe [0]);
399 respipe_osf [1] = TO_SOCKET (respipe [1]);
400}
401
402static void poll_wait (void)
403{
404 fd_set rfd;
405
406 while (eio_nreqs ())
407 {
408 int size;
409
410 X_LOCK (reslock);
411 size = res_queue.size;
412 X_UNLOCK (reslock);
413
414 if (size)
415 return;
416
417 etp_maybe_start_thread ();
418
419 FD_ZERO (&rfd);
420 FD_SET (respipe [0], &rfd);
421
422 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
423 }
424}
425
426static int poll_cb (void)
427{
428 int res;
429
430 do
431 {
432 res = eio_poll ();
433
434 if (res > 0)
435 croak (0);
436 }
437 while (max_outstanding && max_outstanding <= eio_nreqs ());
438
368 return 0; 439 return res;
369} 440}
370 441
442static void atfork_child (void)
443{
444 create_respipe ();
445}
446
447#define dREQ \
448 aio_req req; \
449 int req_pri = next_pri; \
450 next_pri = EIO_PRI_DEFAULT; \
451 \
452 if (SvOK (callback) && !SvROK (callback)) \
453 croak ("callback must be undef or of reference type"); \
454 \
455 Newz (0, req, 1, eio_req); \
456 if (!req) \
457 croak ("out of memory during eio_req allocation"); \
458 \
459 req->callback = newSVsv (callback); \
460 req->pri = req_pri
461
462#define REQ_SEND \
463 req_submit (req); \
464 \
465 if (GIMME_V != G_VOID) \
466 XPUSHs (req_sv (req, AIO_REQ_KLASS));
467
371MODULE = IO::AIO PACKAGE = IO::AIO 468MODULE = IO::AIO PACKAGE = IO::AIO
372 469
373PROTOTYPES: ENABLE 470PROTOTYPES: ENABLE
374 471
375BOOT: 472BOOT:
376{ 473{
377 if (pipe (respipe)) 474 stash = gv_stashpv ("IO::AIO", 1);
378 croak ("unable to initialize result pipe");
379 475
380 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 476 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
381 croak ("cannot set result pipe to nonblocking mode"); 477 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
478 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
479 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
480 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
481#ifndef _WIN32
482 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
483#endif
382 484
383 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 485 create_respipe ();
384 croak ("cannot set result pipe to nonblocking mode");
385}
386 486
487 if (eio_init (want_poll, done_poll) < 0)
488 croak ("IO::AIO: unable to initialise eio library");
489
490 /* atfork child called in fifo order, so before eio's handler */
491 X_THREAD_ATFORK (0, 0, atfork_child);
492}
493
387void 494void
388min_parallel(nthreads) 495max_poll_reqs (int nreqs)
389 int nthreads
390 PROTOTYPE: $ 496 PROTOTYPE: $
391 CODE: 497 CODE:
392 while (nthreads > started) 498 eio_set_max_poll_reqs (nreqs);
393 start_thread ();
394 499
395void 500void
396max_parallel(nthreads) 501max_poll_time (double nseconds)
397 int nthreads
398 PROTOTYPE: $ 502 PROTOTYPE: $
399 CODE: 503 CODE:
504 eio_set_max_poll_time (nseconds);
505
506void
507min_parallel (int nthreads)
508 PROTOTYPE: $
509 CODE:
510 eio_set_min_parallel (nthreads);
511
512void
513max_parallel (int nthreads)
514 PROTOTYPE: $
515 CODE:
516 eio_set_max_parallel (nthreads);
517
518void
519max_idle (int nthreads)
520 PROTOTYPE: $
521 CODE:
522 eio_set_max_idle (nthreads);
523
524void
525max_outstanding (int maxreqs)
526 PROTOTYPE: $
527 CODE:
528 max_outstanding = maxreqs;
529
530void
531aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
532 PROTOTYPE: $$$;$
533 PPCODE:
400{ 534{
401 int cur = started; 535 dREQ;
402 while (cur > nthreads) 536
403 { 537 req->type = EIO_OPEN;
404 end_thread (); 538 req->sv1 = newSVsv (pathname);
539 req->ptr1 = SvPVbyte_nolen (req->sv1);
540 req->int1 = flags;
541 req->int2 = mode;
542
543 REQ_SEND;
544}
545
546void
547aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
548 PROTOTYPE: $;$
549 ALIAS:
550 aio_fsync = EIO_FSYNC
551 aio_fdatasync = EIO_FDATASYNC
552 PPCODE:
553{
554 dREQ;
555
556 req->type = ix;
557 req->sv1 = newSVsv (fh);
558 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
559
560 REQ_SEND (req);
561}
562
563void
564aio_close (SV *fh, SV *callback=&PL_sv_undef)
565 PROTOTYPE: $;$
566 PPCODE:
567{
568 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
569 dREQ;
570
571 if (close_pipe < 0)
572 {
573 int pipefd [2];
574
575 if (pipe (pipefd) < 0
576 || close (pipefd [1]) < 0
577 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
578 abort (); /*D*/
579
580 close_pipe = pipefd [0];
581 }
582
583 req->type = EIO_DUP2;
584 req->int1 = close_pipe;
585 req->sv2 = newSVsv (fh);
586 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
587
588 REQ_SEND (req);
589}
590
591void
592aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
593 ALIAS:
594 aio_read = EIO_READ
595 aio_write = EIO_WRITE
596 PROTOTYPE: $$$$$;$
597 PPCODE:
598{
599 STRLEN svlen;
600 char *svptr = SvPVbyte (data, svlen);
601 UV len = SvUV (length);
602
603 SvUPGRADE (data, SVt_PV);
604 SvPOK_on (data);
605
606 if (dataoffset < 0)
607 dataoffset += svlen;
608
609 if (dataoffset < 0 || dataoffset > svlen)
610 croak ("dataoffset outside of data scalar");
611
612 if (ix == EIO_WRITE)
613 {
614 /* write: check length and adjust. */
615 if (!SvOK (length) || len + dataoffset > svlen)
616 len = svlen - dataoffset;
617 }
618 else
619 {
620 /* read: grow scalar as necessary */
621 svptr = SvGROW (data, len + dataoffset + 1);
622 }
623
624 if (len < 0)
625 croak ("length must not be negative");
626
627 {
628 dREQ;
629
630 req->type = ix;
631 req->sv1 = newSVsv (fh);
632 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
633 : IoOFP (sv_2io (fh)));
634 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
635 req->size = len;
636 req->sv2 = SvREFCNT_inc (data);
637 req->ptr2 = (char *)svptr + dataoffset;
638 req->stroffset = dataoffset;
639
640 if (!SvREADONLY (data))
405 cur--; 641 {
642 SvREADONLY_on (data);
643 req->flags |= FLAG_SV2_RO_OFF;
406 } 644 }
407 645
408 while (started > nthreads) 646 REQ_SEND;
647 }
648}
649
650void
651aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
652 PROTOTYPE: $$;$
653 PPCODE:
654{
655 SV *data;
656 dREQ;
657
658 req->type = EIO_READLINK;
659 req->sv1 = newSVsv (path);
660 req->ptr1 = SvPVbyte_nolen (req->sv1);
661
662 REQ_SEND;
663}
664
665void
666aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
667 PROTOTYPE: $$$$;$
668 PPCODE:
669{
670 dREQ;
671
672 req->type = EIO_SENDFILE;
673 req->sv1 = newSVsv (out_fh);
674 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
675 req->sv2 = newSVsv (in_fh);
676 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
677 req->offs = SvVAL64 (in_offset);
678 req->size = length;
679
680 REQ_SEND;
681}
682
683void
684aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
685 PROTOTYPE: $$$;$
686 PPCODE:
687{
688 dREQ;
689
690 req->type = EIO_READAHEAD;
691 req->sv1 = newSVsv (fh);
692 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
693 req->offs = SvVAL64 (offset);
694 req->size = length;
695
696 REQ_SEND;
697}
698
699void
700aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
701 ALIAS:
702 aio_stat = EIO_STAT
703 aio_lstat = EIO_LSTAT
704 PPCODE:
705{
706 dREQ;
707
708 req->sv1 = newSVsv (fh_or_path);
709
710 if (SvPOK (req->sv1))
711 {
712 req->type = ix;
713 req->ptr1 = SvPVbyte_nolen (req->sv1);
714 }
715 else
716 {
717 req->type = EIO_FSTAT;
718 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
719 }
720
721 REQ_SEND;
722}
723
724void
725aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
726 PPCODE:
727{
728 dREQ;
729
730 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
731 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
732 req->sv1 = newSVsv (fh_or_path);
733
734 if (SvPOK (req->sv1))
735 {
736 req->type = EIO_UTIME;
737 req->ptr1 = SvPVbyte_nolen (req->sv1);
738 }
739 else
740 {
741 req->type = EIO_FUTIME;
742 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
743 }
744
745 REQ_SEND;
746}
747
748void
749aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
750 PPCODE:
751{
752 dREQ;
753
754 req->sv1 = newSVsv (fh_or_path);
755 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
756
757 if (SvPOK (req->sv1))
758 {
759 req->type = EIO_TRUNCATE;
760 req->ptr1 = SvPVbyte_nolen (req->sv1);
761 }
762 else
763 {
764 req->type = EIO_FTRUNCATE;
765 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
766 }
767
768 REQ_SEND;
769}
770
771void
772aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
773 ALIAS:
774 aio_chmod = EIO_CHMOD
775 aio_mkdir = EIO_MKDIR
776 PPCODE:
777{
778 dREQ;
779
780 req->int2 = mode;
781 req->sv1 = newSVsv (fh_or_path);
782
783 if (SvPOK (req->sv1))
784 {
785 req->type = ix;
786 req->ptr1 = SvPVbyte_nolen (req->sv1);
787 }
788 else
789 {
790 req->type = EIO_FCHMOD;
791 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
792 }
793
794 REQ_SEND;
795}
796
797void
798aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
799 PPCODE:
800{
801 dREQ;
802
803 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
804 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
805 req->sv1 = newSVsv (fh_or_path);
806
807 if (SvPOK (req->sv1))
808 {
809 req->type = EIO_CHOWN;
810 req->ptr1 = SvPVbyte_nolen (req->sv1);
811 }
812 else
813 {
814 req->type = EIO_FCHOWN;
815 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
816 }
817
818 REQ_SEND;
819}
820
821void
822aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
823 ALIAS:
824 aio_unlink = EIO_UNLINK
825 aio_rmdir = EIO_RMDIR
826 aio_readdir = EIO_READDIR
827 PPCODE:
828{
829 dREQ;
830
831 req->type = ix;
832 req->sv1 = newSVsv (pathname);
833 req->ptr1 = SvPVbyte_nolen (req->sv1);
834
835 REQ_SEND;
836}
837
838void
839aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
840 ALIAS:
841 aio_link = EIO_LINK
842 aio_symlink = EIO_SYMLINK
843 aio_rename = EIO_RENAME
844 PPCODE:
845{
846 dREQ;
847
848 req->type = ix;
849 req->sv1 = newSVsv (oldpath);
850 req->ptr1 = SvPVbyte_nolen (req->sv1);
851 req->sv2 = newSVsv (newpath);
852 req->ptr2 = SvPVbyte_nolen (req->sv2);
853
854 REQ_SEND;
855}
856
857void
858aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
859 PPCODE:
860{
861 dREQ;
862
863 req->type = EIO_MKNOD;
864 req->sv1 = newSVsv (pathname);
865 req->ptr1 = SvPVbyte_nolen (req->sv1);
866 req->int2 = (mode_t)mode;
867 req->offs = dev;
868
869 REQ_SEND;
870}
871
872void
873aio_busy (double delay, SV *callback=&PL_sv_undef)
874 PPCODE:
875{
876 dREQ;
877
878 req->type = EIO_BUSY;
879 req->nv1 = delay < 0. ? 0. : delay;
880
881 REQ_SEND;
882}
883
884void
885aio_group (SV *callback=&PL_sv_undef)
886 PROTOTYPE: ;$
887 PPCODE:
888{
889 dREQ;
890
891 req->type = EIO_GROUP;
892
893 eio_submit (req);
894 XPUSHs (req_sv (req, AIO_GRP_KLASS));
895}
896
897void
898aio_nop (SV *callback=&PL_sv_undef)
899 ALIAS:
900 aio_nop = EIO_NOP
901 aio_sync = EIO_SYNC
902 PPCODE:
903{
904 dREQ;
905
906 req->type = ix;
907
908 REQ_SEND;
909}
910
911int
912aioreq_pri (int pri = 0)
913 PROTOTYPE: ;$
914 CODE:
915 RETVAL = next_pri;
916 if (items > 0)
917 {
918 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
919 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
920 next_pri = pri;
921 }
922 OUTPUT:
923 RETVAL
924
925void
926aioreq_nice (int nice = 0)
927 CODE:
928 nice = next_pri - nice;
929 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
930 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
931 next_pri = nice;
932
933void
934flush ()
935 PROTOTYPE:
936 CODE:
937 while (eio_nreqs ())
409 { 938 {
410 poll_wait (); 939 poll_wait ();
411 poll_cb (); 940 poll_cb ();
412 } 941 }
413}
414 942
415int 943int
416max_outstanding(nreqs)
417 int nreqs
418 PROTOTYPE: $
419 CODE:
420 RETVAL = max_outstanding;
421 max_outstanding = nreqs;
422
423void
424aio_open(pathname,flags,mode,callback=&PL_sv_undef)
425 SV * pathname
426 int flags
427 int mode
428 SV * callback
429 PROTOTYPE: $$$;$
430 CODE:
431{
432 aio_req req;
433
434 Newz (0, req, 1, aio_cb);
435
436 if (!req)
437 croak ("out of memory during aio_req allocation");
438
439 req->type = REQ_OPEN;
440 req->data = newSVsv (pathname);
441 req->dataptr = SvPV_nolen (req->data);
442 req->fd = flags;
443 req->mode = mode;
444 req->callback = SvREFCNT_inc (callback);
445
446 send_req (req);
447}
448
449void
450aio_close(fh,callback=&PL_sv_undef)
451 InputStream fh
452 SV * callback
453 PROTOTYPE: $;$
454 ALIAS:
455 aio_close = REQ_CLOSE
456 aio_fsync = REQ_FSYNC
457 aio_fdatasync = REQ_FDATASYNC
458 CODE:
459{
460 aio_req req;
461
462 Newz (0, req, 1, aio_cb);
463
464 if (!req)
465 croak ("out of memory during aio_req allocation");
466
467 req->type = ix;
468 req->fd = PerlIO_fileno (fh);
469 req->callback = SvREFCNT_inc (callback);
470
471 send_req (req);
472}
473
474void
475aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
476 InputStream fh
477 UV offset
478 IV length
479 SV * data
480 IV dataoffset
481 SV * callback
482 PROTOTYPE: $$$$$;$
483 CODE:
484 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
485
486void
487aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
488 OutputStream fh
489 UV offset
490 IV length
491 SV * data
492 IV dataoffset
493 SV * callback
494 PROTOTYPE: $$$$$;$
495 CODE:
496 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
497
498void
499aio_readahead(fh,offset,length,callback=&PL_sv_undef)
500 InputStream fh
501 UV offset
502 IV length
503 SV * callback
504 PROTOTYPE: $$$;$
505 CODE:
506{
507 aio_req req;
508
509 if (length < 0)
510 croak ("length must not be negative");
511
512 Newz (0, req, 1, aio_cb);
513
514 if (!req)
515 croak ("out of memory during aio_req allocation");
516
517 req->type = REQ_READAHEAD;
518 req->fd = PerlIO_fileno (fh);
519 req->offset = offset;
520 req->length = length;
521 req->callback = SvREFCNT_inc (callback);
522
523 send_req (req);
524}
525
526void
527aio_stat(fh_or_path,callback=&PL_sv_undef)
528 SV * fh_or_path
529 SV * callback
530 ALIAS:
531 aio_stat = REQ_STAT
532 aio_lstat = REQ_LSTAT
533 CODE:
534{
535 aio_req req;
536
537 Newz (0, req, 1, aio_cb);
538
539 if (!req)
540 croak ("out of memory during aio_req allocation");
541
542 New (0, req->statdata, 1, Stat_t);
543
544 if (!req->statdata)
545 croak ("out of memory during aio_req->statdata allocation");
546
547 if (SvPOK (fh_or_path))
548 {
549 req->type = ix;
550 req->data = newSVsv (fh_or_path);
551 req->dataptr = SvPV_nolen (req->data);
552 }
553 else
554 {
555 req->type = REQ_FSTAT;
556 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
557 }
558
559 req->callback = SvREFCNT_inc (callback);
560
561 send_req (req);
562}
563
564void
565aio_unlink(pathname,callback=&PL_sv_undef)
566 SV * pathname
567 SV * callback
568 CODE:
569{
570 aio_req req;
571
572 Newz (0, req, 1, aio_cb);
573
574 if (!req)
575 croak ("out of memory during aio_req allocation");
576
577 req->type = REQ_UNLINK;
578 req->data = newSVsv (pathname);
579 req->dataptr = SvPV_nolen (req->data);
580 req->callback = SvREFCNT_inc (callback);
581
582 send_req (req);
583}
584
585void
586flush()
587 PROTOTYPE:
588 CODE:
589 while (nreqs)
590 {
591 poll_wait ();
592 poll_cb ();
593 }
594
595void
596poll() 944poll()
597 PROTOTYPE: 945 PROTOTYPE:
598 CODE: 946 CODE:
599 if (nreqs)
600 {
601 poll_wait (); 947 poll_wait ();
602 poll_cb (); 948 RETVAL = poll_cb ();
603 } 949 OUTPUT:
950 RETVAL
604 951
605int 952int
606poll_fileno() 953poll_fileno()
607 PROTOTYPE: 954 PROTOTYPE:
608 CODE: 955 CODE:
… …
620 967
621void 968void
622poll_wait() 969poll_wait()
623 PROTOTYPE: 970 PROTOTYPE:
624 CODE: 971 CODE:
625 if (nreqs)
626 poll_wait (); 972 poll_wait ();
627 973
628int 974int
629nreqs() 975nreqs()
630 PROTOTYPE: 976 PROTOTYPE:
631 CODE: 977 CODE:
632 RETVAL = nreqs; 978 RETVAL = eio_nreqs ();
633 OUTPUT: 979 OUTPUT:
634 RETVAL 980 RETVAL
635 981
982int
983nready()
984 PROTOTYPE:
985 CODE:
986 RETVAL = eio_nready ();
987 OUTPUT:
988 RETVAL
989
990int
991npending()
992 PROTOTYPE:
993 CODE:
994 RETVAL = eio_npending ();
995 OUTPUT:
996 RETVAL
997
998int
999nthreads()
1000 PROTOTYPE:
1001 CODE:
1002 RETVAL = eio_nthreads ();
1003 OUTPUT:
1004 RETVAL
1005
1006void _on_next_submit (SV *cb)
1007 CODE:
1008 SvREFCNT_dec (on_next_submit);
1009 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1010
1011PROTOTYPES: DISABLE
1012
1013MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1014
1015void
1016cancel (aio_req_ornot req)
1017 CODE:
1018 eio_cancel (req);
1019
1020void
1021cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1022 CODE:
1023 SvREFCNT_dec (req->callback);
1024 req->callback = newSVsv (callback);
1025
1026MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1027
1028void
1029add (aio_req grp, ...)
1030 PPCODE:
1031{
1032 int i;
1033
1034 if (grp->int1 == 2)
1035 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1036
1037 for (i = 1; i < items; ++i )
1038 {
1039 aio_req req;
1040
1041 if (GIMME_V != G_VOID)
1042 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1043
1044 req = SvAIO_REQ (ST (i));
1045
1046 if (req)
1047 eio_grp_add (grp, req);
1048 }
1049}
1050
1051void
1052cancel_subs (aio_req_ornot req)
1053 CODE:
1054 req_cancel_subs (req);
1055
1056void
1057result (aio_req grp, ...)
1058 CODE:
1059{
1060 int i;
1061 AV *av;
1062
1063 grp->errorno = errno;
1064
1065 av = newAV ();
1066
1067 for (i = 1; i < items; ++i )
1068 av_push (av, newSVsv (ST (i)));
1069
1070 SvREFCNT_dec (grp->sv1);
1071 grp->sv1 = (SV *)av;
1072}
1073
1074void
1075errno (aio_req grp, int errorno = errno)
1076 CODE:
1077 grp->errorno = errorno;
1078
1079void
1080limit (aio_req grp, int limit)
1081 CODE:
1082 eio_grp_limit (grp, limit);
1083
1084void
1085feed (aio_req grp, SV *callback=&PL_sv_undef)
1086 CODE:
1087{
1088 SvREFCNT_dec (grp->sv2);
1089 grp->sv2 = newSVsv (callback);
1090
1091 if (grp->int2 <= 0)
1092 grp->int2 = 2;
1093
1094 eio_grp_limit (grp, grp->int2);
1095}
1096

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