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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.131 by root, Sun Oct 12 22:30:33 2008 UTC

1#define PERL_NO_GET_CONTEXT 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
7#include <sys/types.h> 12#include <sys/types.h>
8#include <sys/stat.h> 13#include <sys/stat.h>
9#include <unistd.h> 14#include <limits.h>
10#include <fcntl.h> 15#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 16#include <sched.h>
13#include <endian.h>
14 17
15#include <pthread.h> 18/* perl namespace pollution */
16#include <sys/syscall.h> 19#undef VERSION
17 20
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21#ifdef _WIN32
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 22
22#if __i386 || __amd64 23# define EIO_STRUCT_DIRENT Direntry_t
23# define STACKSIZE ( 256 * sizeof (long)) 24# undef malloc
24#elif __ia64 25# undef free
25# define STACKSIZE (8192 * sizeof (long)) 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
26#else 59#else
27# define STACKSIZE ( 512 * sizeof (long)) 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
28#endif 68#endif
29 69
70/* perl stupidly overrides readdir and maybe others */
71/* with thread-unsafe versions, imagine that :( */
72#undef readdir
73#undef opendir
74#undef closedir
75
76#define EIO_STRUCT_STAT Stat_t
77
78/* use NV for 32 bit perls as it allows larger offsets */
79#if IVSIZE >= 8
80# define SvVAL64 SvIV
81#else
82# define SvVAL64 SvNV
83#endif
84
85/*****************************************************************************/
86
87#if __GNUC__ >= 3
88# define expect(expr,value) __builtin_expect ((expr),(value))
89#else
90# define expect(expr,value) (expr)
91#endif
92
93#define expect_false(expr) expect ((expr) != 0, 0)
94#define expect_true(expr) expect ((expr) != 0, 1)
95
96/*****************************************************************************/
97
98static HV *stash;
99typedef SV SV8; /* byte-sv, used for argument-checking */
100
101#define AIO_REQ_KLASS "IO::AIO::REQ"
102#define AIO_GRP_KLASS "IO::AIO::GRP"
103
104#define EIO_REQ_MEMBERS \
105 SV *callback; \
106 SV *sv1, *sv2; \
107 STRLEN stroffset; \
108 SV *self;
109
110#define EIO_NO_WRAPPERS 1
111
112#include "libeio/eio.h"
113
114static int req_invoke (eio_req *req);
115#define EIO_FINISH(req) req_invoke (req)
116static void req_destroy (eio_req *grp);
117#define EIO_DESTROY(req) req_destroy (req)
118
30enum { 119enum {
31 REQ_QUIT, 120 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}; 121};
37 122
38typedef struct aio_cb { 123#include "libeio/eio.c"
39 struct aio_cb *next;
40 124
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; 125typedef eio_req *aio_req;
126typedef eio_req *aio_req_ornot;
57 127
58static int started; 128static SV *on_next_submit;
59static int nreqs; 129static int next_pri = EIO_PRI_DEFAULT;
60static int reqpipe[2], respipe[2]; 130static int max_outstanding;
61 131
62static aio_req qs, qe; /* queue start, queue end */ 132static int respipe_osf [2], respipe [2] = { -1, -1 };
63 133
64static void *aio_proc(void *arg); 134static void req_destroy (aio_req req);
135static void req_cancel (aio_req req);
65 136
66static void 137static void want_poll (void)
67start_thread (void)
68{ 138{
69 sigset_t fullsigset, oldsigset; 139 /* write a dummy byte to the pipe so fh becomes ready */
70 pthread_t tid; 140 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
71 pthread_attr_t attr;
72
73 pthread_attr_init (&attr);
74 pthread_attr_setstacksize (&attr, STACKSIZE);
75 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77 sigfillset (&fullsigset);
78 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81 started++;
82
83 sigprocmask (SIG_SETMASK, &oldsigset, 0);
84} 141}
85 142
86static void 143static void done_poll (void)
87send_reqs (void)
88{ 144{
89 /* this write is atomic */ 145 /* read any signals sent by the worker threads */
90 while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) 146 char buf [4];
91 { 147 while (respipe_read (respipe [0], buf, 4) == 4)
92 qs = qs->next; 148 ;
93 if (!qs) qe = 0;
94 }
95} 149}
96 150
97static void 151/* must be called at most once */
98send_req (aio_req req) 152static SV *req_sv (aio_req req, const char *klass)
99{ 153{
100 nreqs++; 154 if (!req->self)
101 req->next = 0;
102
103 if (qe)
104 { 155 {
105 qe->next = req; 156 req->self = (SV *)newHV ();
106 qe = req; 157 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
107 } 158 }
108 else
109 qe = qs = req;
110 159
111 send_reqs (); 160 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
112} 161}
113 162
114static void 163static aio_req SvAIO_REQ (SV *sv)
115end_thread (void)
116{ 164{
117 aio_req req; 165 MAGIC *mg;
118 New (0, req, 1, aio_cb);
119 req->type = REQ_QUIT;
120 166
121 send_req (req); 167 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
122} 168 croak ("object of class " AIO_REQ_KLASS " expected");
123 169
124static void 170 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
125read_write (pTHX_
126 int dowrite, int fd, off_t offset, size_t length,
127 SV *data, STRLEN dataoffset, SV *callback)
128{
129 aio_req req;
130 STRLEN svlen;
131 char *svptr = SvPV (data, svlen);
132 171
133 SvUPGRADE (data, SVt_PV); 172 return mg ? (aio_req)mg->mg_ptr : 0;
134 SvPOK_on (data); 173}
135 174
136 if (dataoffset < 0) 175static void aio_grp_feed (aio_req grp)
137 dataoffset += svlen; 176{
138 177 if (grp->sv2 && SvOK (grp->sv2))
139 if (dataoffset < 0 || dataoffset > svlen)
140 croak ("data offset outside of string");
141
142 if (dowrite)
143 { 178 {
144 /* write: check length and adjust. */ 179 dSP;
145 if (length < 0 || length + dataoffset > svlen) 180
146 length = svlen - dataoffset; 181 ENTER;
182 SAVETMPS;
183 PUSHMARK (SP);
184 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185 PUTBACK;
186 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187 SPAGAIN;
188 FREETMPS;
189 LEAVE;
147 } 190 }
148 else 191}
192
193static void req_submit (eio_req *req)
194{
195 eio_submit (req);
196
197 if (expect_false (on_next_submit))
149 { 198 {
150 /* read: grow scalar as necessary */ 199 dSP;
151 svptr = SvGROW (data, length + dataoffset); 200 SV *cb = sv_2mortal (on_next_submit);
201
202 on_next_submit = 0;
203
204 PUSHMARK (SP);
205 PUTBACK;
206 call_sv (cb, G_DISCARD | G_EVAL);
152 } 207 }
153
154 if (length < 0)
155 croak ("length must not be negative");
156
157 Newz (0, req, 1, aio_cb);
158
159 if (!req)
160 croak ("out of memory during aio_req allocation");
161
162 req->type = dowrite ? REQ_WRITE : REQ_READ;
163 req->fd = fd;
164 req->offset = offset;
165 req->length = length;
166 req->data = SvREFCNT_inc (data);
167 req->dataptr = (char *)svptr + dataoffset;
168 req->callback = SvREFCNT_inc (callback);
169
170 send_req (req);
171} 208}
172 209
173static void 210static int req_invoke (eio_req *req)
174poll_wait ()
175{
176 fd_set rfd;
177 FD_ZERO(&rfd);
178 FD_SET(respipe[0], &rfd);
179
180 select (respipe[0] + 1, &rfd, 0, 0, 0);
181}
182
183static int
184poll_cb (pTHX)
185{ 211{
186 dSP; 212 dSP;
187 int count = 0;
188 aio_req req;
189 213
190 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 214 if (req->flags & FLAG_SV2_RO_OFF)
215 SvREADONLY_off (req->sv2);
216
217 if (!EIO_CANCELLED (req) && req->callback)
191 { 218 {
192 nreqs--; 219 ENTER;
193 220 SAVETMPS;
194 if (req->type == REQ_QUIT)
195 started--;
196 else
197 {
198 int errorno = errno;
199 errno = req->errorno;
200
201 if (req->type == REQ_READ)
202 SvCUR_set (req->data, req->dataoffset
203 + req->result > 0 ? req->result : 0);
204
205 if (req->data)
206 SvREFCNT_dec (req->data);
207
208 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
209 {
210 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211 PL_laststatval = req->result;
212 PL_statcache = *(req->statdata);
213
214 Safefree (req->statdata);
215 }
216
217 PUSHMARK (SP); 221 PUSHMARK (SP);
218 XPUSHs (sv_2mortal (newSViv (req->result))); 222 EXTEND (SP, 1);
219 PUTBACK;
220 call_sv (req->callback, G_VOID);
221 SPAGAIN;
222
223 if (req->callback)
224 SvREFCNT_dec (req->callback);
225
226 errno = errorno;
227 count++;
228 }
229
230 Safefree (req);
231 }
232
233 if (qs)
234 send_reqs ();
235
236 return count;
237}
238
239static void *
240aio_proc (void *thr_arg)
241{
242 aio_req req;
243
244 /* then loop */
245 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246 {
247 errno = 0; /* strictly unnecessary */
248 223
249 switch (req->type) 224 switch (req->type)
250 { 225 {
251 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 226 case EIO_READDIR:
252 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 227 {
253#if SYS_readahead 228 SV *rv = &PL_sv_undef;
254 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
255#else
256 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
257#endif
258 229
259 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 230 if (req->result >= 0)
260 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 231 {
261 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 232 int i;
233 char *buf = req->ptr2;
234 AV *av = newAV ();
262 235
263 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 236 av_extend (av, req->result - 1);
264 case REQ_CLOSE: req->result = close (req->fd); break;
265 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
266 237
267 case REQ_FSYNC: req->result = fsync (req->fd); break; 238 for (i = 0; i < req->result; ++i)
268 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 239 {
240 SV *sv = newSVpv (buf, 0);
269 241
242 av_store (av, i, sv);
243 buf += SvCUR (sv) + 1;
244 }
245
246 rv = sv_2mortal (newRV_noinc ((SV *)av));
247 }
248
249 PUSHs (rv);
250 }
251 break;
252
253 case EIO_OPEN:
254 {
255 /* convert fd to fh */
256 SV *fh = &PL_sv_undef;
257
258 if (req->result >= 0)
259 {
260 GV *gv = (GV *)sv_newmortal ();
261 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
262 char sym [64];
263 int symlen;
264
265 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
266 gv_init (gv, stash, sym, symlen, 0);
267
268 symlen = snprintf (
269 sym,
270 sizeof (sym),
271 "%s&=%d",
272 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
273 req->result
274 );
275
276 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
277 fh = (SV *)gv;
278 }
279
280 PUSHs (fh);
281 }
282 break;
283
284 case EIO_GROUP:
285 req->int1 = 2; /* mark group as finished */
286
287 if (req->sv1)
288 {
289 int i;
290 AV *av = (AV *)req->sv1;
291
292 EXTEND (SP, AvFILL (av) + 1);
293 for (i = 0; i <= AvFILL (av); ++i)
294 PUSHs (*av_fetch (av, i, 0));
295 }
296 break;
297
298 case EIO_NOP:
270 case REQ_QUIT: 299 case EIO_BUSY:
271 write (respipe[1], (void *)&req, sizeof (req)); 300 break;
272 return 0; 301
302 case EIO_READLINK:
303 if (req->result > 0)
304 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
305 break;
306
307 case EIO_STAT:
308 case EIO_LSTAT:
309 case EIO_FSTAT:
310 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
311 PL_laststatval = req->result;
312 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
313 PUSHs (sv_2mortal (newSViv (req->result)));
314 break;
315
316 case EIO_READ:
317 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
318 *SvEND (req->sv2) = 0;
319 PUSHs (sv_2mortal (newSViv (req->result)));
320 break;
321
322 case EIO_DUP2:
323 if (req->result > 0)
324 req->result = 0;
325 /* FALLTHROUGH */
273 326
274 default: 327 default:
275 req->result = ENOSYS; 328 PUSHs (sv_2mortal (newSViv (req->result)));
276 break; 329 break;
277 } 330 }
278 331
279 req->errorno = errno; 332 errno = req->errorno;
280 write (respipe[1], (void *)&req, sizeof (req)); 333
334 PUTBACK;
335 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
336 SPAGAIN;
337
338 FREETMPS;
339 LEAVE;
340
341 PUTBACK;
281 } 342 }
282 343
344 return !!SvTRUE (ERRSV);
345}
346
347static void req_destroy (aio_req req)
348{
349 if (req->self)
350 {
351 sv_unmagic (req->self, PERL_MAGIC_ext);
352 SvREFCNT_dec (req->self);
353 }
354
355 SvREFCNT_dec (req->sv1);
356 SvREFCNT_dec (req->sv2);
357 SvREFCNT_dec (req->callback);
358
359 Safefree (req);
360}
361
362static void req_cancel_subs (aio_req grp)
363{
364 aio_req sub;
365
366 if (grp->type != EIO_GROUP)
367 return;
368
369 SvREFCNT_dec (grp->sv2);
370 grp->sv2 = 0;
371
372 eio_grp_cancel (grp);
373}
374
375#ifdef USE_SOCKETS_AS_HANDLES
376# define TO_SOCKET(x) (win32_get_osfhandle (x))
377#else
378# define TO_SOCKET(x) (x)
379#endif
380
381static void
382create_respipe (void)
383{
384 int old_readfd = respipe [0];
385
386 if (respipe [1] >= 0)
387 respipe_close (TO_SOCKET (respipe [1]));
388
389#ifdef _WIN32
390 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
391#else
392 if (pipe (respipe))
393#endif
394 croak ("unable to initialize result pipe");
395
396 if (old_readfd >= 0)
397 {
398 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
399 croak ("unable to initialize result pipe(2)");
400
401 respipe_close (respipe [0]);
402 respipe [0] = old_readfd;
403 }
404
405#ifdef _WIN32
406 int arg = 1;
407 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
408 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
409#else
410 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
411 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
412#endif
413 croak ("unable to initialize result pipe(3)");
414
415 respipe_osf [0] = TO_SOCKET (respipe [0]);
416 respipe_osf [1] = TO_SOCKET (respipe [1]);
417}
418
419static void poll_wait (void)
420{
421 fd_set rfd;
422
423 while (eio_nreqs ())
424 {
425 int size;
426
427 X_LOCK (reslock);
428 size = res_queue.size;
429 X_UNLOCK (reslock);
430
431 if (size)
432 return;
433
434 etp_maybe_start_thread ();
435
436 FD_ZERO (&rfd);
437 FD_SET (respipe [0], &rfd);
438
439 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
440 }
441}
442
443static int poll_cb (void)
444{
445 for (;;)
446 {
447 int res = eio_poll ();
448
449 if (res > 0)
450 croak (0);
451
452 if (!max_outstanding || max_outstanding > eio_nreqs ())
453 return res;
454
455 poll_wait ();
456 }
457}
458
459static void atfork_child (void)
460{
461 create_respipe ();
462}
463
464static SV *
465get_cb (SV *cb_sv)
466{
467 HV *st;
468 GV *gvp;
469 CV *cv;
470
471 if (!SvOK (cb_sv))
283 return 0; 472 return 0;
284}
285 473
474 cv = sv_2cv (cb_sv, &st, &gvp, 0);
475
476 if (!cv)
477 croak ("IO::AIO callback must be undef or a CODE reference");
478
479 return (SV *)cv;
480}
481
482#define dREQ \
483 SV *cb_cv; \
484 aio_req req; \
485 int req_pri = next_pri; \
486 next_pri = EIO_PRI_DEFAULT; \
487 \
488 cb_cv = get_cb (callback); \
489 \
490 Newz (0, req, 1, eio_req); \
491 if (!req) \
492 croak ("out of memory during eio_req allocation"); \
493 \
494 req->callback = SvREFCNT_inc (cb_cv); \
495 req->pri = req_pri
496
497#define REQ_SEND \
498 PUTBACK; \
499 req_submit (req); \
500 SPAGAIN; \
501 \
502 if (GIMME_V != G_VOID) \
503 XPUSHs (req_sv (req, AIO_REQ_KLASS));
504
286MODULE = IO::AIO PACKAGE = IO::AIO 505MODULE = IO::AIO PACKAGE = IO::AIO
287 506
507PROTOTYPES: ENABLE
508
288BOOT: 509BOOT:
289{ 510{
290 if (pipe (reqpipe) || pipe (respipe)) 511 stash = gv_stashpv ("IO::AIO", 1);
291 croak ("unable to initialize request or result pipe");
292 512
293 if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) 513 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
294 croak ("cannot set result pipe to nonblocking mode"); 514 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
515 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
516 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
517 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
518#ifndef _WIN32
519 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
520#endif
295 521
296 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 522 create_respipe ();
297 croak ("cannot set result pipe to nonblocking mode");
298}
299 523
524 if (eio_init (want_poll, done_poll) < 0)
525 croak ("IO::AIO: unable to initialise eio library");
526
527 /* atfork child called in fifo order, so before eio's handler */
528 X_THREAD_ATFORK (0, 0, atfork_child);
529}
530
300void 531void
301min_parallel(nthreads) 532max_poll_reqs (int nreqs)
302 int nthreads
303 PROTOTYPE: $ 533 PROTOTYPE: $
304 CODE: 534 CODE:
305 while (nthreads > started) 535 eio_set_max_poll_reqs (nreqs);
306 start_thread ();
307 536
308void 537void
309max_parallel(nthreads) 538max_poll_time (double nseconds)
310 int nthreads
311 PROTOTYPE: $ 539 PROTOTYPE: $
312 CODE: 540 CODE:
541 eio_set_max_poll_time (nseconds);
542
543void
544min_parallel (int nthreads)
545 PROTOTYPE: $
546 CODE:
547 eio_set_min_parallel (nthreads);
548
549void
550max_parallel (int nthreads)
551 PROTOTYPE: $
552 CODE:
553 eio_set_max_parallel (nthreads);
554
555void
556max_idle (int nthreads)
557 PROTOTYPE: $
558 CODE:
559 eio_set_max_idle (nthreads);
560
561void
562max_outstanding (int maxreqs)
563 PROTOTYPE: $
564 CODE:
565 max_outstanding = maxreqs;
566
567void
568aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
569 PROTOTYPE: $$$;$
570 PPCODE:
313{ 571{
314 int cur = started; 572 dREQ;
315 while (cur > nthreads) 573
316 { 574 req->type = EIO_OPEN;
317 end_thread (); 575 req->sv1 = newSVsv (pathname);
576 req->ptr1 = SvPVbyte_nolen (req->sv1);
577 req->int1 = flags;
578 req->int2 = mode;
579
580 REQ_SEND;
581}
582
583void
584aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
585 PROTOTYPE: $;$
586 ALIAS:
587 aio_fsync = EIO_FSYNC
588 aio_fdatasync = EIO_FDATASYNC
589 PPCODE:
590{
591 dREQ;
592
593 req->type = ix;
594 req->sv1 = newSVsv (fh);
595 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
596
597 REQ_SEND (req);
598}
599
600void
601aio_close (SV *fh, SV *callback=&PL_sv_undef)
602 PROTOTYPE: $;$
603 PPCODE:
604{
605 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
606 dREQ;
607
608 if (close_pipe < 0)
609 {
610 int pipefd [2];
611
612 if (pipe (pipefd) < 0
613 || close (pipefd [1]) < 0
614 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
615 abort (); /*D*/
616
617 close_pipe = pipefd [0];
618 }
619
620 req->type = EIO_DUP2;
621 req->int1 = close_pipe;
622 req->sv2 = newSVsv (fh);
623 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
624
625 REQ_SEND (req);
626}
627
628void
629aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
630 ALIAS:
631 aio_read = EIO_READ
632 aio_write = EIO_WRITE
633 PROTOTYPE: $$$$$;$
634 PPCODE:
635{
636 STRLEN svlen;
637 char *svptr = SvPVbyte (data, svlen);
638 UV len = SvUV (length);
639
640 SvUPGRADE (data, SVt_PV);
641 SvPOK_on (data);
642
643 if (dataoffset < 0)
644 dataoffset += svlen;
645
646 if (dataoffset < 0 || dataoffset > svlen)
647 croak ("dataoffset outside of data scalar");
648
649 if (ix == EIO_WRITE)
650 {
651 /* write: check length and adjust. */
652 if (!SvOK (length) || len + dataoffset > svlen)
653 len = svlen - dataoffset;
654 }
655 else
656 {
657 /* read: grow scalar as necessary */
658 svptr = SvGROW (data, len + dataoffset + 1);
659 }
660
661 if (len < 0)
662 croak ("length must not be negative");
663
664 {
665 dREQ;
666
667 req->type = ix;
668 req->sv1 = newSVsv (fh);
669 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
670 : IoOFP (sv_2io (fh)));
671 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
672 req->size = len;
673 req->sv2 = SvREFCNT_inc_NN (data);
674 req->ptr2 = (char *)svptr + dataoffset;
675 req->stroffset = dataoffset;
676
677 if (!SvREADONLY (data))
318 cur--; 678 {
679 SvREADONLY_on (data);
680 req->flags |= FLAG_SV2_RO_OFF;
319 } 681 }
320 682
321 while (started > nthreads) 683 REQ_SEND;
684 }
685}
686
687void
688aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
689 PROTOTYPE: $$;$
690 PPCODE:
691{
692 SV *data;
693 dREQ;
694
695 req->type = EIO_READLINK;
696 req->sv1 = newSVsv (path);
697 req->ptr1 = SvPVbyte_nolen (req->sv1);
698
699 REQ_SEND;
700}
701
702void
703aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
704 PROTOTYPE: $$$$;$
705 PPCODE:
706{
707 dREQ;
708
709 req->type = EIO_SENDFILE;
710 req->sv1 = newSVsv (out_fh);
711 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
712 req->sv2 = newSVsv (in_fh);
713 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
714 req->offs = SvVAL64 (in_offset);
715 req->size = length;
716
717 REQ_SEND;
718}
719
720void
721aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
722 PROTOTYPE: $$$;$
723 PPCODE:
724{
725 dREQ;
726
727 req->type = EIO_READAHEAD;
728 req->sv1 = newSVsv (fh);
729 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
730 req->offs = SvVAL64 (offset);
731 req->size = length;
732
733 REQ_SEND;
734}
735
736void
737aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
738 ALIAS:
739 aio_stat = EIO_STAT
740 aio_lstat = EIO_LSTAT
741 PPCODE:
742{
743 dREQ;
744
745 req->sv1 = newSVsv (fh_or_path);
746
747 if (SvPOK (req->sv1))
748 {
749 req->type = ix;
750 req->ptr1 = SvPVbyte_nolen (req->sv1);
751 }
752 else
753 {
754 req->type = EIO_FSTAT;
755 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
756 }
757
758 REQ_SEND;
759}
760
761void
762aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
763 PPCODE:
764{
765 dREQ;
766
767 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
768 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
769 req->sv1 = newSVsv (fh_or_path);
770
771 if (SvPOK (req->sv1))
772 {
773 req->type = EIO_UTIME;
774 req->ptr1 = SvPVbyte_nolen (req->sv1);
775 }
776 else
777 {
778 req->type = EIO_FUTIME;
779 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780 }
781
782 REQ_SEND;
783}
784
785void
786aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
787 PPCODE:
788{
789 dREQ;
790
791 req->sv1 = newSVsv (fh_or_path);
792 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
793
794 if (SvPOK (req->sv1))
795 {
796 req->type = EIO_TRUNCATE;
797 req->ptr1 = SvPVbyte_nolen (req->sv1);
798 }
799 else
800 {
801 req->type = EIO_FTRUNCATE;
802 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
803 }
804
805 REQ_SEND;
806}
807
808void
809aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
810 ALIAS:
811 aio_chmod = EIO_CHMOD
812 aio_mkdir = EIO_MKDIR
813 PPCODE:
814{
815 dREQ;
816
817 req->int2 = mode;
818 req->sv1 = newSVsv (fh_or_path);
819
820 if (SvPOK (req->sv1))
821 {
822 req->type = ix;
823 req->ptr1 = SvPVbyte_nolen (req->sv1);
824 }
825 else
826 {
827 req->type = EIO_FCHMOD;
828 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
829 }
830
831 REQ_SEND;
832}
833
834void
835aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
836 PPCODE:
837{
838 dREQ;
839
840 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
841 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
842 req->sv1 = newSVsv (fh_or_path);
843
844 if (SvPOK (req->sv1))
845 {
846 req->type = EIO_CHOWN;
847 req->ptr1 = SvPVbyte_nolen (req->sv1);
848 }
849 else
850 {
851 req->type = EIO_FCHOWN;
852 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
853 }
854
855 REQ_SEND;
856}
857
858void
859aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
860 ALIAS:
861 aio_unlink = EIO_UNLINK
862 aio_rmdir = EIO_RMDIR
863 aio_readdir = EIO_READDIR
864 PPCODE:
865{
866 dREQ;
867
868 req->type = ix;
869 req->sv1 = newSVsv (pathname);
870 req->ptr1 = SvPVbyte_nolen (req->sv1);
871
872 REQ_SEND;
873}
874
875void
876aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
877 ALIAS:
878 aio_link = EIO_LINK
879 aio_symlink = EIO_SYMLINK
880 aio_rename = EIO_RENAME
881 PPCODE:
882{
883 dREQ;
884
885 req->type = ix;
886 req->sv1 = newSVsv (oldpath);
887 req->ptr1 = SvPVbyte_nolen (req->sv1);
888 req->sv2 = newSVsv (newpath);
889 req->ptr2 = SvPVbyte_nolen (req->sv2);
890
891 REQ_SEND;
892}
893
894void
895aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
896 PPCODE:
897{
898 dREQ;
899
900 req->type = EIO_MKNOD;
901 req->sv1 = newSVsv (pathname);
902 req->ptr1 = SvPVbyte_nolen (req->sv1);
903 req->int2 = (mode_t)mode;
904 req->offs = dev;
905
906 REQ_SEND;
907}
908
909void
910aio_busy (double delay, SV *callback=&PL_sv_undef)
911 PPCODE:
912{
913 dREQ;
914
915 req->type = EIO_BUSY;
916 req->nv1 = delay < 0. ? 0. : delay;
917
918 REQ_SEND;
919}
920
921void
922aio_group (SV *callback=&PL_sv_undef)
923 PROTOTYPE: ;$
924 PPCODE:
925{
926 dREQ;
927
928 req->type = EIO_GROUP;
929
930 req_submit (req);
931 XPUSHs (req_sv (req, AIO_GRP_KLASS));
932}
933
934void
935aio_nop (SV *callback=&PL_sv_undef)
936 ALIAS:
937 aio_nop = EIO_NOP
938 aio_sync = EIO_SYNC
939 PPCODE:
940{
941 dREQ;
942
943 req->type = ix;
944
945 REQ_SEND;
946}
947
948int
949aioreq_pri (int pri = 0)
950 PROTOTYPE: ;$
951 CODE:
952 RETVAL = next_pri;
953 if (items > 0)
954 {
955 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
956 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
957 next_pri = pri;
958 }
959 OUTPUT:
960 RETVAL
961
962void
963aioreq_nice (int nice = 0)
964 CODE:
965 nice = next_pri - nice;
966 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
967 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
968 next_pri = nice;
969
970void
971flush ()
972 PROTOTYPE:
973 CODE:
974 while (eio_nreqs ())
322 { 975 {
323 poll_wait (); 976 poll_wait ();
324 poll_cb (aTHX); 977 poll_cb ();
325 }
326}
327
328void
329aio_open(pathname,flags,mode,callback)
330 SV * pathname
331 int flags
332 int mode
333 SV * callback
334 PROTOTYPE: $$$$
335 CODE:
336{
337 aio_req req;
338
339 Newz (0, req, 1, aio_cb);
340
341 if (!req)
342 croak ("out of memory during aio_req allocation");
343
344 req->type = REQ_OPEN;
345 req->data = newSVsv (pathname);
346 req->dataptr = SvPV_nolen (req->data);
347 req->fd = flags;
348 req->mode = mode;
349 req->callback = SvREFCNT_inc (callback);
350
351 send_req (req);
352}
353
354void
355aio_close(fh,callback)
356 InputStream fh
357 SV * callback
358 PROTOTYPE: $$
359 ALIAS:
360 aio_close = REQ_CLOSE
361 aio_fsync = REQ_FSYNC
362 aio_fdatasync = REQ_FDATASYNC
363 CODE:
364{
365 aio_req req;
366
367 Newz (0, req, 1, aio_cb);
368
369 if (!req)
370 croak ("out of memory during aio_req allocation");
371
372 req->type = ix;
373 req->fd = PerlIO_fileno (fh);
374 req->callback = SvREFCNT_inc (callback);
375
376 send_req (req);
377}
378
379void
380aio_read(fh,offset,length,data,dataoffset,callback)
381 InputStream fh
382 UV offset
383 IV length
384 SV * data
385 IV dataoffset
386 SV * callback
387 PROTOTYPE: $$$$$$
388 CODE:
389 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391void
392aio_write(fh,offset,length,data,dataoffset,callback)
393 OutputStream fh
394 UV offset
395 IV length
396 SV * data
397 IV dataoffset
398 SV * callback
399 PROTOTYPE: $$$$$$
400 CODE:
401 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403void
404aio_readahead(fh,offset,length,callback)
405 InputStream fh
406 UV offset
407 IV length
408 SV * callback
409 PROTOTYPE: $$$$
410 CODE:
411{
412 aio_req req;
413
414 if (length < 0)
415 croak ("length must not be negative");
416
417 Newz (0, req, 1, aio_cb);
418
419 if (!req)
420 croak ("out of memory during aio_req allocation");
421
422 req->type = REQ_READAHEAD;
423 req->fd = PerlIO_fileno (fh);
424 req->offset = offset;
425 req->length = length;
426 req->callback = SvREFCNT_inc (callback);
427
428 send_req (req);
429}
430
431void
432aio_stat(fh_or_path,callback)
433 SV * fh_or_path
434 SV * callback
435 PROTOTYPE: $$
436 ALIAS:
437 aio_lstat = 1
438 CODE:
439{
440 aio_req req;
441
442 Newz (0, req, 1, aio_cb);
443
444 if (!req)
445 croak ("out of memory during aio_req allocation");
446
447 New (0, req->statdata, 1, Stat_t);
448
449 if (!req->statdata)
450 croak ("out of memory during aio_req->statdata allocation");
451
452 if (SvPOK (fh_or_path))
453 { 978 }
454 req->type = ix ? REQ_LSTAT : REQ_STAT;
455 req->data = newSVsv (fh_or_path);
456 req->dataptr = SvPV_nolen (req->data);
457 }
458 else
459 {
460 req->type = REQ_FSTAT;
461 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462 }
463 979
464 req->callback = SvREFCNT_inc (callback); 980int
465 981poll()
466 send_req (req);
467}
468
469void
470aio_unlink(pathname,callback)
471 SV * pathname
472 SV * callback
473 PROTOTYPE: $$ 982 PROTOTYPE:
474 CODE: 983 CODE:
475{ 984 poll_wait ();
476 aio_req req; 985 RETVAL = poll_cb ();
477 986 OUTPUT:
478 Newz (0, req, 1, aio_cb); 987 RETVAL
479
480 if (!req)
481 croak ("out of memory during aio_req allocation");
482
483 req->type = REQ_UNLINK;
484 req->data = newSVsv (pathname);
485 req->dataptr = SvPV_nolen (req->data);
486 req->callback = SvREFCNT_inc (callback);
487
488 send_req (req);
489}
490 988
491int 989int
492poll_fileno() 990poll_fileno()
493 PROTOTYPE: 991 PROTOTYPE:
494 CODE: 992 CODE:
495 RETVAL = respipe[0]; 993 RETVAL = respipe [0];
496 OUTPUT: 994 OUTPUT:
497 RETVAL 995 RETVAL
498 996
499int 997int
500poll_cb(...) 998poll_cb(...)
501 PROTOTYPE: 999 PROTOTYPE:
502 CODE: 1000 CODE:
503 RETVAL = poll_cb (aTHX); 1001 RETVAL = poll_cb ();
504 OUTPUT: 1002 OUTPUT:
505 RETVAL 1003 RETVAL
506 1004
507void 1005void
508poll_wait() 1006poll_wait()
… …
512 1010
513int 1011int
514nreqs() 1012nreqs()
515 PROTOTYPE: 1013 PROTOTYPE:
516 CODE: 1014 CODE:
517 RETVAL = nreqs; 1015 RETVAL = eio_nreqs ();
518 OUTPUT: 1016 OUTPUT:
519 RETVAL 1017 RETVAL
520 1018
1019int
1020nready()
1021 PROTOTYPE:
1022 CODE:
1023 RETVAL = eio_nready ();
1024 OUTPUT:
1025 RETVAL
1026
1027int
1028npending()
1029 PROTOTYPE:
1030 CODE:
1031 RETVAL = eio_npending ();
1032 OUTPUT:
1033 RETVAL
1034
1035int
1036nthreads()
1037 PROTOTYPE:
1038 CODE:
1039 RETVAL = eio_nthreads ();
1040 OUTPUT:
1041 RETVAL
1042
1043void _on_next_submit (SV *cb)
1044 CODE:
1045 SvREFCNT_dec (on_next_submit);
1046 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1047
1048PROTOTYPES: DISABLE
1049
1050MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1051
1052void
1053cancel (aio_req_ornot req)
1054 CODE:
1055 eio_cancel (req);
1056
1057void
1058cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1059 PPCODE:
1060{
1061 if (GIMME_V != G_VOID)
1062 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1063
1064 if (items > 1)
1065 {
1066 SV *cb_cv = get_cb (callback);
1067
1068 SvREFCNT_dec (req->callback);
1069 req->callback = SvREFCNT_inc (cb_cv);
1070 }
1071}
1072
1073MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1074
1075void
1076add (aio_req grp, ...)
1077 PPCODE:
1078{
1079 int i;
1080
1081 if (grp->int1 == 2)
1082 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1083
1084 for (i = 1; i < items; ++i )
1085 {
1086 aio_req req;
1087
1088 if (GIMME_V != G_VOID)
1089 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1090
1091 req = SvAIO_REQ (ST (i));
1092
1093 if (req)
1094 eio_grp_add (grp, req);
1095 }
1096}
1097
1098void
1099cancel_subs (aio_req_ornot req)
1100 CODE:
1101 req_cancel_subs (req);
1102
1103void
1104result (aio_req grp, ...)
1105 CODE:
1106{
1107 int i;
1108 AV *av;
1109
1110 grp->errorno = errno;
1111
1112 av = newAV ();
1113
1114 for (i = 1; i < items; ++i )
1115 av_push (av, newSVsv (ST (i)));
1116
1117 SvREFCNT_dec (grp->sv1);
1118 grp->sv1 = (SV *)av;
1119}
1120
1121void
1122errno (aio_req grp, int errorno = errno)
1123 CODE:
1124 grp->errorno = errorno;
1125
1126void
1127limit (aio_req grp, int limit)
1128 CODE:
1129 eio_grp_limit (grp, limit);
1130
1131void
1132feed (aio_req grp, SV *callback=&PL_sv_undef)
1133 CODE:
1134{
1135 SvREFCNT_dec (grp->sv2);
1136 grp->sv2 = newSVsv (callback);
1137 grp->feed = aio_grp_feed;
1138
1139 if (grp->int2 <= 0)
1140 grp->int2 = 2;
1141
1142 eio_grp_limit (grp, grp->int2);
1143}
1144

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