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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.5 by root, Sun Jul 10 23:45:16 2005 UTC vs.
Revision 1.119 by root, Sun May 11 19:11:05 2008 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
5#include <sys/types.h> 12#include <sys/types.h>
6#include <sys/stat.h> 13#include <sys/stat.h>
7#include <unistd.h> 14#include <limits.h>
8#include <fcntl.h> 15#include <fcntl.h>
9#include <signal.h>
10#include <sched.h> 16#include <sched.h>
11#include <endian.h>
12 17
13#include <pthread.h> 18/* perl namespace pollution */
14#include <sys/syscall.h> 19#undef VERSION
15 20
16typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21#ifdef _WIN32
17typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
18typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
19 22
20#if __ia64 23# define EIO_STRUCT_DIRENT Direntry_t
21# define STACKSIZE 65536 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
22#else 59#else
23# define STACKSIZE 4096 60
61# include <sys/time.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
24#endif 68#endif
25 69
70#define EIO_STRUCT_STAT Stat_t
71
72/* use NV for 32 bit perls as it allows larger offsets */
73#if IVSIZE >= 8
74# define SvVAL64 SvIV
75#else
76# define SvVAL64 SvNV
77#endif
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_COMMON \
86 SV *callback; \
87 SV *sv1, *sv2; \
88 STRLEN stroffset; \
89 SV *self
90
91#include "libeio/eio.h"
92
93static int req_invoke (eio_req *req);
94#define EIO_FINISH(req) req_invoke (req)
95static void aio_grp_feed (eio_req *grp);
96#define EIO_FEED(req) aio_grp_feed (req)
97static void req_destroy (eio_req *grp);
98#define EIO_DESTROY(req) req_destroy (req)
99
26enum { 100enum {
27 REQ_QUIT, 101 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
28 REQ_OPEN, REQ_CLOSE,
29 REQ_READ, REQ_WRITE, REQ_READAHEAD,
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
31 REQ_FSYNC, REQ_FDATASYNC,
32}; 102};
33 103
34typedef struct aio_cb { 104#include "libeio/eio.c"
35 struct aio_cb *volatile next;
36 105
37 int type;
38
39 int fd;
40 off_t offset;
41 size_t length;
42 ssize_t result;
43 mode_t mode; /* open */
44 int errorno;
45 SV *data, *callback;
46 void *dataptr;
47 STRLEN dataoffset;
48
49 Stat_t *statdata;
50} aio_cb;
51
52typedef aio_cb *aio_req; 106typedef eio_req *aio_req;
107typedef eio_req *aio_req_ornot;
53 108
54static int started; 109static SV *on_next_submit;
55static int nreqs; 110static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
56static int max_outstanding = 1<<30; 111static int max_outstanding;
57static int respipe [2];
58 112
59static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 113static int respipe_osf [2], respipe [2] = { -1, -1 };
60static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62 114
63static volatile aio_req reqs, reqe; /* queue start, queue end */ 115static void req_destroy (aio_req req);
64static volatile aio_req ress, rese; /* queue start, queue end */ 116static void req_cancel (aio_req req);
65 117
66static void 118static void want_poll (void)
67poll_wait ()
68{ 119{
120 /* write a dummy byte to the pipe so fh becomes ready */
121 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
122}
123
124static void done_poll (void)
125{
126 /* read any signals sent by the worker threads */
127 char buf [4];
128 while (respipe_read (respipe [0], buf, 4) == 4)
129 ;
130}
131
132/* must be called at most once */
133static SV *req_sv (aio_req req, const char *klass)
134{
69 if (!nreqs) 135 if (!req->self)
70 return; 136 {
137 req->self = (SV *)newHV ();
138 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
139 }
71 140
72 fd_set rfd; 141 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
73 FD_ZERO(&rfd);
74 FD_SET(respipe [0], &rfd);
75
76 select (respipe [0] + 1, &rfd, 0, 0, 0);
77} 142}
78 143
79static int 144static aio_req SvAIO_REQ (SV *sv)
80poll_cb () 145{
146 MAGIC *mg;
147
148 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
149 croak ("object of class " AIO_REQ_KLASS " expected");
150
151 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
152
153 return mg ? (aio_req)mg->mg_ptr : 0;
154}
155
156static void aio_grp_feed (aio_req grp)
157{
158 if (grp->sv2 && SvOK (grp->sv2))
159 {
160 dSP;
161
162 ENTER;
163 SAVETMPS;
164 PUSHMARK (SP);
165 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
166 PUTBACK;
167 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
168 SPAGAIN;
169 FREETMPS;
170 LEAVE;
171 }
172}
173
174static void req_submit (eio_req *req)
175{
176 eio_submit (req);
177
178 if (on_next_submit)
179 {
180 dSP;
181 SV *cb = sv_2mortal (on_next_submit);
182
183 on_next_submit = 0;
184
185 PUSHMARK (SP);
186 PUTBACK;
187 call_sv (cb, G_DISCARD | G_EVAL);
188 }
189}
190
191static int req_invoke (eio_req *req)
81{ 192{
82 dSP; 193 dSP;
83 int count = 0;
84 aio_req req;
85
86 {
87 /* read and signals sent by the worker threads */
88 char buf [32];
89 while (read (respipe [0], buf, 32) > 0)
90 ;
91 }
92 194
93 for (;;) 195 if (req->flags & FLAG_SV2_RO_OFF)
196 SvREADONLY_off (req->sv2);
197
198 if (!EIO_CANCELLED (req) && SvOK (req->callback))
94 { 199 {
95 pthread_mutex_lock (&reslock); 200 ENTER;
201 SAVETMPS;
202 PUSHMARK (SP);
203 EXTEND (SP, 1);
96 204
97 req = ress; 205 switch (req->type)
98
99 if (ress)
100 { 206 {
101 ress = ress->next; 207 case EIO_READDIR:
102 if (!ress) rese = 0;
103 }
104
105 pthread_mutex_unlock (&reslock);
106
107 if (!req)
108 break;
109
110 nreqs--;
111
112 if (req->type == REQ_QUIT)
113 started--;
114 else
115 {
116 int errorno = errno;
117 errno = req->errorno;
118
119 if (req->type == REQ_READ)
120 SvCUR_set (req->data, req->dataoffset
121 + req->result > 0 ? req->result : 0);
122
123 if (req->data)
124 SvREFCNT_dec (req->data);
125
126 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127 { 208 {
128 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 209 SV *rv = &PL_sv_undef;
129 PL_laststatval = req->result;
130 PL_statcache = *(req->statdata);
131 210
132 Safefree (req->statdata); 211 if (req->result >= 0)
212 {
213 int i;
214 char *buf = req->ptr2;
215 AV *av = newAV ();
216
217 av_extend (av, req->result - 1);
218
219 for (i = 0; i < req->result; ++i)
220 {
221 SV *sv = newSVpv (buf, 0);
222
223 av_store (av, i, sv);
224 buf += SvCUR (sv) + 1;
225 }
226
227 rv = sv_2mortal (newRV_noinc ((SV *)av));
228 }
229
230 PUSHs (rv);
133 } 231 }
232 break;
134 233
135 PUSHMARK (SP); 234 case EIO_OPEN:
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 { 235 {
140 /* convert fd to fh */ 236 /* convert fd to fh */
141 SV *fh; 237 SV *fh = &PL_sv_undef;
142 238
143 PUTBACK; 239 if (req->result >= 0)
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 240 {
145 SPAGAIN; 241 GV *gv = (GV *)sv_newmortal ();
242 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
243 char sym [64];
244 int symlen;
245
246 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
247 gv_init (gv, stash, sym, symlen, 0);
146 248
147 fh = POPs; 249 symlen = snprintf (
250 sym,
251 sizeof (sym),
252 "%s&=%d",
253 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
254 req->result
255 );
148 256
149 PUSHMARK (SP); 257 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
258 fh = (SV *)gv;
259 }
260
150 XPUSHs (fh); 261 PUSHs (fh);
151 } 262 }
152
153 PUTBACK;
154 call_sv (req->callback, G_VOID | G_EVAL);
155 SPAGAIN;
156
157 if (req->callback)
158 SvREFCNT_dec (req->callback);
159
160 errno = errorno;
161 count++;
162 }
163
164 Safefree (req);
165 }
166
167 return count;
168}
169
170static void *aio_proc(void *arg);
171
172static void
173start_thread (void)
174{
175 sigset_t fullsigset, oldsigset;
176 pthread_t tid;
177 pthread_attr_t attr;
178
179 pthread_attr_init (&attr);
180 pthread_attr_setstacksize (&attr, STACKSIZE);
181 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
182
183 sigfillset (&fullsigset);
184 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
185
186 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
187 started++;
188
189 sigprocmask (SIG_SETMASK, &oldsigset, 0);
190}
191
192static void
193send_req (aio_req req)
194{
195 nreqs++;
196
197 pthread_mutex_lock (&reqlock);
198
199 req->next = 0;
200
201 if (reqe)
202 {
203 reqe->next = req;
204 reqe = req;
205 }
206 else
207 reqe = reqs = req;
208
209 pthread_cond_signal (&reqwait);
210 pthread_mutex_unlock (&reqlock);
211
212 while (nreqs > max_outstanding)
213 {
214 poll_wait ();
215 poll_cb ();
216 }
217}
218
219static void
220end_thread (void)
221{
222 aio_req req;
223 New (0, req, 1, aio_cb);
224 req->type = REQ_QUIT;
225
226 send_req (req);
227}
228
229static void
230read_write (int dowrite, int fd, off_t offset, size_t length,
231 SV *data, STRLEN dataoffset, SV *callback)
232{
233 aio_req req;
234 STRLEN svlen;
235 char *svptr = SvPV (data, svlen);
236
237 SvUPGRADE (data, SVt_PV);
238 SvPOK_on (data);
239
240 if (dataoffset < 0)
241 dataoffset += svlen;
242
243 if (dataoffset < 0 || dataoffset > svlen)
244 croak ("data offset outside of string");
245
246 if (dowrite)
247 {
248 /* write: check length and adjust. */
249 if (length < 0 || length + dataoffset > svlen)
250 length = svlen - dataoffset;
251 }
252 else
253 {
254 /* read: grow scalar as necessary */
255 svptr = SvGROW (data, length + dataoffset);
256 }
257
258 if (length < 0)
259 croak ("length must not be negative");
260
261 Newz (0, req, 1, aio_cb);
262
263 if (!req)
264 croak ("out of memory during aio_req allocation");
265
266 req->type = dowrite ? REQ_WRITE : REQ_READ;
267 req->fd = fd;
268 req->offset = offset;
269 req->length = length;
270 req->data = SvREFCNT_inc (data);
271 req->dataptr = (char *)svptr + dataoffset;
272 req->callback = SvREFCNT_inc (callback);
273
274 send_req (req);
275}
276
277static void *
278aio_proc (void *thr_arg)
279{
280 aio_req req;
281 int type;
282
283 do
284 {
285 pthread_mutex_lock (&reqlock);
286
287 for (;;)
288 {
289 req = reqs;
290
291 if (reqs)
292 {
293 reqs = reqs->next;
294 if (!reqs) reqe = 0;
295 }
296
297 if (req)
298 break; 263 break;
299 264
300 pthread_cond_wait (&reqwait, &reqlock); 265 case EIO_GROUP:
301 } 266 req->int1 = 2; /* mark group as finished */
302 267
303 pthread_mutex_unlock (&reqlock); 268 if (req->sv1)
304
305 errno = 0; /* strictly unnecessary */
306
307 type = req->type;
308
309 switch (type)
310 { 269 {
311 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 270 int i;
312 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 271 AV *av = (AV *)req->sv1;
313#if SYS_readahead
314 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
315#else
316 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
317#endif
318 272
319 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 273 EXTEND (SP, AvFILL (av) + 1);
320 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 274 for (i = 0; i <= AvFILL (av); ++i)
321 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 275 PUSHs (*av_fetch (av, i, 0));
322 276 }
323 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
324 case REQ_CLOSE: req->result = close (req->fd); break;
325 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
326
327 case REQ_FSYNC: req->result = fsync (req->fd); break;
328 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329
330 case REQ_QUIT:
331 break; 277 break;
332 278
279 case EIO_NOP:
280 case EIO_BUSY:
281 break;
282
283 case EIO_READLINK:
284 if (req->result > 0)
285 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
286 break;
287
288 case EIO_STAT:
289 case EIO_LSTAT:
290 case EIO_FSTAT:
291 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
292 PL_laststatval = req->result;
293 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
294 PUSHs (sv_2mortal (newSViv (req->result)));
295 break;
296
297 case EIO_READ:
298 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
299 *SvEND (req->sv2) = 0;
300 PUSHs (sv_2mortal (newSViv (req->result)));
301 break;
302
303 case EIO_DUP2:
304 if (req->result > 0)
305 req->result = 0;
306 /* FALLTHROUGH */
307
333 default: 308 default:
334 req->result = ENOSYS; 309 PUSHs (sv_2mortal (newSViv (req->result)));
335 break; 310 break;
336 } 311 }
337 312
338 req->errorno = errno; 313 errno = req->errorno;
339 314
340 pthread_mutex_lock (&reslock); 315 PUTBACK;
316 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
317 SPAGAIN;
341 318
342 req->next = 0; 319 FREETMPS;
320 LEAVE;
343 321
344 if (rese) 322 PUTBACK;
345 {
346 rese->next = req;
347 rese = req;
348 }
349 else
350 {
351 rese = ress = req;
352
353 /* write a dummy byte to the pipe so fh becomes ready */
354 write (respipe [1], &respipe, 1);
355 }
356
357 pthread_mutex_unlock (&reslock);
358 } 323 }
359 while (type != REQ_QUIT);
360 324
325 return !!SvTRUE (ERRSV);
326}
327
328static void req_destroy (aio_req req)
329{
330 if (req->self)
331 {
332 sv_unmagic (req->self, PERL_MAGIC_ext);
333 SvREFCNT_dec (req->self);
334 }
335
336 SvREFCNT_dec (req->sv1);
337 SvREFCNT_dec (req->sv2);
338 SvREFCNT_dec (req->callback);
339
340 Safefree (req);
341}
342
343static void req_cancel_subs (aio_req grp)
344{
345 aio_req sub;
346
347 if (grp->type != EIO_GROUP)
348 return;
349
350 SvREFCNT_dec (grp->sv2);
351 grp->sv2 = 0;
352
353 eio_grp_cancel (grp);
354}
355
356#ifdef USE_SOCKETS_AS_HANDLES
357# define TO_SOCKET(x) (win32_get_osfhandle (x))
358#else
359# define TO_SOCKET(x) (x)
360#endif
361
362static void
363create_respipe (void)
364{
365 int old_readfd = respipe [0];
366
367 if (respipe [1] >= 0)
368 respipe_close (TO_SOCKET (respipe [1]));
369
370#ifdef _WIN32
371 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
372#else
373 if (pipe (respipe))
374#endif
375 croak ("unable to initialize result pipe");
376
377 if (old_readfd >= 0)
378 {
379 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
380 croak ("unable to initialize result pipe(2)");
381
382 respipe_close (respipe [0]);
383 respipe [0] = old_readfd;
384 }
385
386#ifdef _WIN32
387 int arg = 1;
388 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
389 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
390#else
391 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
392 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
393#endif
394 croak ("unable to initialize result pipe(3)");
395
396 respipe_osf [0] = TO_SOCKET (respipe [0]);
397 respipe_osf [1] = TO_SOCKET (respipe [1]);
398}
399
400static void poll_wait (void)
401{
402 fd_set rfd;
403
404 while (eio_nreqs ())
405 {
406 int size;
407
408 X_LOCK (reslock);
409 size = res_queue.size;
410 X_UNLOCK (reslock);
411
412 if (size)
413 return;
414
415 maybe_start_thread ();
416
417 FD_ZERO (&rfd);
418 FD_SET (respipe [0], &rfd);
419
420 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
421 }
422}
423
424static int poll_cb (void)
425{
426 int res;
427
428 do
429 {
430 res = eio_poll ();
431
432 if (res > 0)
433 croak (0);
434 }
435 while (max_outstanding && max_outstanding <= eio_nreqs ());
436
361 return 0; 437 return res;
362} 438}
363 439
440static void atfork_child (void)
441{
442 create_respipe ();
443}
444
445#define dREQ \
446 aio_req req; \
447 int req_pri = next_pri; \
448 next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
449 \
450 if (SvOK (callback) && !SvROK (callback)) \
451 croak ("callback must be undef or of reference type"); \
452 \
453 Newz (0, req, 1, eio_req); \
454 if (!req) \
455 croak ("out of memory during eio_req allocation"); \
456 \
457 req->callback = newSVsv (callback); \
458 req->pri = req_pri
459
460#define REQ_SEND \
461 req_submit (req); \
462 \
463 if (GIMME_V != G_VOID) \
464 XPUSHs (req_sv (req, AIO_REQ_KLASS));
465
364MODULE = IO::AIO PACKAGE = IO::AIO 466MODULE = IO::AIO PACKAGE = IO::AIO
365 467
468PROTOTYPES: ENABLE
469
366BOOT: 470BOOT:
367{ 471{
368 if (pipe (respipe)) 472 stash = gv_stashpv ("IO::AIO", 1);
369 croak ("unable to initialize result pipe");
370 473
371 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 474 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
372 croak ("cannot set result pipe to nonblocking mode"); 475 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
476 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
477 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
478 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
479#ifdef _WIN32
480 X_MUTEX_CHECK (wrklock);
481 X_MUTEX_CHECK (reslock);
482 X_MUTEX_CHECK (reqlock);
483 X_MUTEX_CHECK (reqwait);
484 X_MUTEX_CHECK (preadwritelock);
485 X_MUTEX_CHECK (readdirlock);
373 486
374 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 487 X_COND_CHECK (reqwait);
375 croak ("cannot set result pipe to nonblocking mode"); 488#else
376} 489 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
490#endif
377 491
492 create_respipe ();
493
494 if (eio_init (want_poll, done_poll) < 0)
495 croak ("IO::AIO: unable to initialise eio library");
496
497 /* atfork child called in fifo order, so before eio's handler */
498 X_THREAD_ATFORK (0, 0, atfork_child);
499}
500
378void 501void
379min_parallel(nthreads) 502max_poll_reqs (int nreqs)
380 int nthreads
381 PROTOTYPE: $ 503 PROTOTYPE: $
382 CODE: 504 CODE:
383 while (nthreads > started) 505 eio_set_max_poll_reqs (nreqs);
384 start_thread ();
385 506
386void 507void
387max_parallel(nthreads) 508max_poll_time (double nseconds)
388 int nthreads
389 PROTOTYPE: $ 509 PROTOTYPE: $
390 CODE: 510 CODE:
511 eio_set_max_poll_time (nseconds);
512
513void
514min_parallel (int nthreads)
515 PROTOTYPE: $
516 CODE:
517 eio_set_min_parallel (nthreads);
518
519void
520max_parallel (int nthreads)
521 PROTOTYPE: $
522 CODE:
523 eio_set_max_parallel (nthreads);
524
525void
526max_idle (int nthreads)
527 PROTOTYPE: $
528 CODE:
529 eio_set_max_idle (nthreads);
530
531void
532max_outstanding (int maxreqs)
533 PROTOTYPE: $
534 CODE:
535 max_outstanding = maxreqs;
536
537void
538aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
539 PROTOTYPE: $$$;$
540 PPCODE:
391{ 541{
392 int cur = started; 542 dREQ;
393 while (cur > nthreads) 543
394 { 544 req->type = EIO_OPEN;
395 end_thread (); 545 req->sv1 = newSVsv (pathname);
546 req->ptr1 = SvPVbyte_nolen (req->sv1);
547 req->int1 = flags;
548 req->int2 = mode;
549
550 REQ_SEND;
551}
552
553void
554aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
555 PROTOTYPE: $;$
556 ALIAS:
557 aio_fsync = EIO_FSYNC
558 aio_fdatasync = EIO_FDATASYNC
559 PPCODE:
560{
561 dREQ;
562
563 req->type = ix;
564 req->sv1 = newSVsv (fh);
565 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
566
567 REQ_SEND (req);
568}
569
570void
571aio_close (SV *fh, SV *callback=&PL_sv_undef)
572 PROTOTYPE: $;$
573 PPCODE:
574{
575 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
576 dREQ;
577
578 if (close_pipe < 0)
579 {
580 int pipefd [2];
581
582 if (pipe (pipefd) < 0
583 || close (pipefd [1]) < 0
584 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
585 abort (); /*D*/
586
587 close_pipe = pipefd [0];
588 }
589
590 req->type = EIO_DUP2;
591 req->int1 = close_pipe;
592 req->sv2 = newSVsv (fh);
593 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
594
595 REQ_SEND (req);
596}
597
598void
599aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
600 ALIAS:
601 aio_read = EIO_READ
602 aio_write = EIO_WRITE
603 PROTOTYPE: $$$$$;$
604 PPCODE:
605{
606 STRLEN svlen;
607 char *svptr = SvPVbyte (data, svlen);
608 UV len = SvUV (length);
609
610 SvUPGRADE (data, SVt_PV);
611 SvPOK_on (data);
612
613 if (dataoffset < 0)
614 dataoffset += svlen;
615
616 if (dataoffset < 0 || dataoffset > svlen)
617 croak ("dataoffset outside of data scalar");
618
619 if (ix == EIO_WRITE)
620 {
621 /* write: check length and adjust. */
622 if (!SvOK (length) || len + dataoffset > svlen)
623 len = svlen - dataoffset;
624 }
625 else
626 {
627 /* read: grow scalar as necessary */
628 svptr = SvGROW (data, len + dataoffset + 1);
629 }
630
631 if (len < 0)
632 croak ("length must not be negative");
633
634 {
635 dREQ;
636
637 req->type = ix;
638 req->sv1 = newSVsv (fh);
639 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
640 : IoOFP (sv_2io (fh)));
641 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
642 req->size = len;
643 req->sv2 = SvREFCNT_inc (data);
644 req->ptr2 = (char *)svptr + dataoffset;
645 req->stroffset = dataoffset;
646
647 if (!SvREADONLY (data))
396 cur--; 648 {
649 SvREADONLY_on (data);
650 req->flags |= FLAG_SV2_RO_OFF;
397 } 651 }
398 652
399 while (started > nthreads) 653 REQ_SEND;
654 }
655}
656
657void
658aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
659 PROTOTYPE: $$;$
660 PPCODE:
661{
662 SV *data;
663 dREQ;
664
665 req->type = EIO_READLINK;
666 req->sv1 = newSVsv (path);
667 req->ptr1 = SvPVbyte_nolen (req->sv1);
668
669 REQ_SEND;
670}
671
672void
673aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
674 PROTOTYPE: $$$$;$
675 PPCODE:
676{
677 dREQ;
678
679 req->type = EIO_SENDFILE;
680 req->sv1 = newSVsv (out_fh);
681 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
682 req->sv2 = newSVsv (in_fh);
683 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
684 req->offs = SvVAL64 (in_offset);
685 req->size = length;
686
687 REQ_SEND;
688}
689
690void
691aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
692 PROTOTYPE: $$$;$
693 PPCODE:
694{
695 dREQ;
696
697 req->type = EIO_READAHEAD;
698 req->sv1 = newSVsv (fh);
699 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
700 req->offs = SvVAL64 (offset);
701 req->size = length;
702
703 REQ_SEND;
704}
705
706void
707aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
708 ALIAS:
709 aio_stat = EIO_STAT
710 aio_lstat = EIO_LSTAT
711 PPCODE:
712{
713 dREQ;
714
715 req->sv1 = newSVsv (fh_or_path);
716
717 if (SvPOK (req->sv1))
718 {
719 req->type = ix;
720 req->ptr1 = SvPVbyte_nolen (req->sv1);
721 }
722 else
723 {
724 req->type = EIO_FSTAT;
725 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
726 }
727
728 REQ_SEND;
729}
730
731void
732aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
733 PPCODE:
734{
735 dREQ;
736
737 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
738 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
739 req->sv1 = newSVsv (fh_or_path);
740
741 if (SvPOK (req->sv1))
742 {
743 req->type = EIO_UTIME;
744 req->ptr1 = SvPVbyte_nolen (req->sv1);
745 }
746 else
747 {
748 req->type = EIO_FUTIME;
749 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
750 }
751
752 REQ_SEND;
753}
754
755void
756aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
757 PPCODE:
758{
759 dREQ;
760
761 req->sv1 = newSVsv (fh_or_path);
762 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
763
764 if (SvPOK (req->sv1))
765 {
766 req->type = EIO_TRUNCATE;
767 req->ptr1 = SvPVbyte_nolen (req->sv1);
768 }
769 else
770 {
771 req->type = EIO_FTRUNCATE;
772 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773 }
774
775 REQ_SEND;
776}
777
778void
779aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
780 ALIAS:
781 aio_chmod = EIO_CHMOD
782 aio_mkdir = EIO_MKDIR
783 PPCODE:
784{
785 dREQ;
786
787 req->int2 = mode;
788 req->sv1 = newSVsv (fh_or_path);
789
790 if (SvPOK (req->sv1))
791 {
792 req->type = EIO_FCHMOD;
793 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
794 }
795 else
796 {
797 req->type = ix;
798 req->ptr1 = SvPVbyte_nolen (req->sv1);
799 }
800
801 REQ_SEND;
802}
803
804void
805aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
806 PPCODE:
807{
808 dREQ;
809
810 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
811 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
812 req->sv1 = newSVsv (fh_or_path);
813
814 if (SvPOK (req->sv1))
815 {
816 req->type = EIO_CHOWN;
817 req->ptr1 = SvPVbyte_nolen (req->sv1);
818 }
819 else
820 {
821 req->type = EIO_FCHOWN;
822 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
823 }
824
825 REQ_SEND;
826}
827
828void
829aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
830 ALIAS:
831 aio_unlink = EIO_UNLINK
832 aio_rmdir = EIO_RMDIR
833 aio_readdir = EIO_READDIR
834 PPCODE:
835{
836 dREQ;
837
838 req->type = ix;
839 req->sv1 = newSVsv (pathname);
840 req->ptr1 = SvPVbyte_nolen (req->sv1);
841
842 REQ_SEND;
843}
844
845void
846aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
847 ALIAS:
848 aio_link = EIO_LINK
849 aio_symlink = EIO_SYMLINK
850 aio_rename = EIO_RENAME
851 PPCODE:
852{
853 dREQ;
854
855 req->type = ix;
856 req->sv1 = newSVsv (oldpath);
857 req->ptr1 = SvPVbyte_nolen (req->sv1);
858 req->sv2 = newSVsv (newpath);
859 req->ptr2 = SvPVbyte_nolen (req->sv2);
860
861 REQ_SEND;
862}
863
864void
865aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
866 PPCODE:
867{
868 dREQ;
869
870 req->type = EIO_MKNOD;
871 req->sv1 = newSVsv (pathname);
872 req->ptr1 = SvPVbyte_nolen (req->sv1);
873 req->int2 = (mode_t)mode;
874 req->offs = dev;
875
876 REQ_SEND;
877}
878
879void
880aio_busy (double delay, SV *callback=&PL_sv_undef)
881 PPCODE:
882{
883 dREQ;
884
885 req->type = EIO_BUSY;
886 req->nv1 = delay < 0. ? 0. : delay;
887
888 REQ_SEND;
889}
890
891void
892aio_group (SV *callback=&PL_sv_undef)
893 PROTOTYPE: ;$
894 PPCODE:
895{
896 dREQ;
897
898 req->type = EIO_GROUP;
899
900 eio_submit (req);
901 XPUSHs (req_sv (req, AIO_GRP_KLASS));
902}
903
904void
905aio_nop (SV *callback=&PL_sv_undef)
906 ALIAS:
907 aio_nop = EIO_NOP
908 aio_sync = EIO_SYNC
909 PPCODE:
910{
911 dREQ;
912
913 req->type = ix;
914
915 REQ_SEND;
916}
917
918int
919aioreq_pri (int pri = 0)
920 PROTOTYPE: ;$
921 CODE:
922 RETVAL = next_pri - EIO_PRI_BIAS;
923 if (items > 0)
924 {
925 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
926 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
927 next_pri = pri + EIO_PRI_BIAS;
928 }
929 OUTPUT:
930 RETVAL
931
932void
933aioreq_nice (int nice = 0)
934 CODE:
935 nice = next_pri - nice;
936 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
937 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
938 next_pri = nice + EIO_PRI_BIAS;
939
940void
941flush ()
942 PROTOTYPE:
943 CODE:
944 while (eio_nreqs ())
400 { 945 {
401 poll_wait (); 946 poll_wait ();
402 poll_cb (); 947 poll_cb ();
403 } 948 }
404}
405 949
406int 950int
407max_outstanding(nreqs) 951poll()
408 int nreqs
409 PROTOTYPE: $
410 CODE:
411 RETVAL = max_outstanding;
412 max_outstanding = nreqs;
413
414void
415aio_open(pathname,flags,mode,callback)
416 SV * pathname
417 int flags
418 int mode
419 SV * callback
420 PROTOTYPE: $$$$
421 CODE:
422{
423 aio_req req;
424
425 Newz (0, req, 1, aio_cb);
426
427 if (!req)
428 croak ("out of memory during aio_req allocation");
429
430 req->type = REQ_OPEN;
431 req->data = newSVsv (pathname);
432 req->dataptr = SvPV_nolen (req->data);
433 req->fd = flags;
434 req->mode = mode;
435 req->callback = SvREFCNT_inc (callback);
436
437 send_req (req);
438}
439
440void
441aio_close(fh,callback)
442 InputStream fh
443 SV * callback
444 PROTOTYPE: $$ 952 PROTOTYPE:
445 ALIAS:
446 aio_close = REQ_CLOSE
447 aio_fsync = REQ_FSYNC
448 aio_fdatasync = REQ_FDATASYNC
449 CODE: 953 CODE:
450{ 954 poll_wait ();
451 aio_req req; 955 RETVAL = poll_cb ();
452 956 OUTPUT:
453 Newz (0, req, 1, aio_cb); 957 RETVAL
454
455 if (!req)
456 croak ("out of memory during aio_req allocation");
457
458 req->type = ix;
459 req->fd = PerlIO_fileno (fh);
460 req->callback = SvREFCNT_inc (callback);
461
462 send_req (req);
463}
464
465void
466aio_read(fh,offset,length,data,dataoffset,callback)
467 InputStream fh
468 UV offset
469 IV length
470 SV * data
471 IV dataoffset
472 SV * callback
473 PROTOTYPE: $$$$$$
474 CODE:
475 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477void
478aio_write(fh,offset,length,data,dataoffset,callback)
479 OutputStream fh
480 UV offset
481 IV length
482 SV * data
483 IV dataoffset
484 SV * callback
485 PROTOTYPE: $$$$$$
486 CODE:
487 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489void
490aio_readahead(fh,offset,length,callback)
491 InputStream fh
492 UV offset
493 IV length
494 SV * callback
495 PROTOTYPE: $$$$
496 CODE:
497{
498 aio_req req;
499
500 if (length < 0)
501 croak ("length must not be negative");
502
503 Newz (0, req, 1, aio_cb);
504
505 if (!req)
506 croak ("out of memory during aio_req allocation");
507
508 req->type = REQ_READAHEAD;
509 req->fd = PerlIO_fileno (fh);
510 req->offset = offset;
511 req->length = length;
512 req->callback = SvREFCNT_inc (callback);
513
514 send_req (req);
515}
516
517void
518aio_stat(fh_or_path,callback)
519 SV * fh_or_path
520 SV * callback
521 PROTOTYPE: $$
522 ALIAS:
523 aio_lstat = 1
524 CODE:
525{
526 aio_req req;
527
528 Newz (0, req, 1, aio_cb);
529
530 if (!req)
531 croak ("out of memory during aio_req allocation");
532
533 New (0, req->statdata, 1, Stat_t);
534
535 if (!req->statdata)
536 croak ("out of memory during aio_req->statdata allocation");
537
538 if (SvPOK (fh_or_path))
539 {
540 req->type = ix ? REQ_LSTAT : REQ_STAT;
541 req->data = newSVsv (fh_or_path);
542 req->dataptr = SvPV_nolen (req->data);
543 }
544 else
545 {
546 req->type = REQ_FSTAT;
547 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548 }
549
550 req->callback = SvREFCNT_inc (callback);
551
552 send_req (req);
553}
554
555void
556aio_unlink(pathname,callback)
557 SV * pathname
558 SV * callback
559 PROTOTYPE: $$
560 CODE:
561{
562 aio_req req;
563
564 Newz (0, req, 1, aio_cb);
565
566 if (!req)
567 croak ("out of memory during aio_req allocation");
568
569 req->type = REQ_UNLINK;
570 req->data = newSVsv (pathname);
571 req->dataptr = SvPV_nolen (req->data);
572 req->callback = SvREFCNT_inc (callback);
573
574 send_req (req);
575}
576 958
577int 959int
578poll_fileno() 960poll_fileno()
579 PROTOTYPE: 961 PROTOTYPE:
580 CODE: 962 CODE:
… …
592 974
593void 975void
594poll_wait() 976poll_wait()
595 PROTOTYPE: 977 PROTOTYPE:
596 CODE: 978 CODE:
597 if (nreqs)
598 poll_wait (); 979 poll_wait ();
599 980
600int 981int
601nreqs() 982nreqs()
602 PROTOTYPE: 983 PROTOTYPE:
603 CODE: 984 CODE:
604 RETVAL = nreqs; 985 RETVAL = eio_nreqs ();
605 OUTPUT: 986 OUTPUT:
606 RETVAL 987 RETVAL
607 988
989int
990nready()
991 PROTOTYPE:
992 CODE:
993 RETVAL = eio_nready ();
994 OUTPUT:
995 RETVAL
996
997int
998npending()
999 PROTOTYPE:
1000 CODE:
1001 RETVAL = eio_npending ();
1002 OUTPUT:
1003 RETVAL
1004
1005int
1006nthreads()
1007 PROTOTYPE:
1008 CODE:
1009 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1010 RETVAL = started;
1011 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1012 OUTPUT:
1013 RETVAL
1014
1015void _on_next_submit (SV *cb)
1016 CODE:
1017 SvREFCNT_dec (on_next_submit);
1018 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1019
1020PROTOTYPES: DISABLE
1021
1022MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1023
1024void
1025cancel (aio_req_ornot req)
1026 CODE:
1027 eio_cancel (req);
1028
1029void
1030cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1031 CODE:
1032 SvREFCNT_dec (req->callback);
1033 req->callback = newSVsv (callback);
1034
1035MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1036
1037void
1038add (aio_req grp, ...)
1039 PPCODE:
1040{
1041 int i;
1042
1043 if (grp->int1 == 2)
1044 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1045
1046 for (i = 1; i < items; ++i )
1047 {
1048 aio_req req;
1049
1050 if (GIMME_V != G_VOID)
1051 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1052
1053 req = SvAIO_REQ (ST (i));
1054
1055 if (req)
1056 eio_grp_add (grp, req);
1057 }
1058}
1059
1060void
1061cancel_subs (aio_req_ornot req)
1062 CODE:
1063 req_cancel_subs (req);
1064
1065void
1066result (aio_req grp, ...)
1067 CODE:
1068{
1069 int i;
1070 AV *av;
1071
1072 grp->errorno = errno;
1073
1074 av = newAV ();
1075
1076 for (i = 1; i < items; ++i )
1077 av_push (av, newSVsv (ST (i)));
1078
1079 SvREFCNT_dec (grp->sv1);
1080 grp->sv1 = (SV *)av;
1081}
1082
1083void
1084errno (aio_req grp, int errorno = errno)
1085 CODE:
1086 grp->errorno = errorno;
1087
1088void
1089limit (aio_req grp, int limit)
1090 CODE:
1091 eio_grp_limit (grp, limit);
1092
1093void
1094feed (aio_req grp, SV *callback=&PL_sv_undef)
1095 CODE:
1096{
1097 SvREFCNT_dec (grp->sv2);
1098 grp->sv2 = newSVsv (callback);
1099
1100 if (grp->int2 <= 0)
1101 grp->int2 = 2;
1102
1103 eio_grp_limit (grp, grp->int2);
1104}
1105

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