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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.18 by root, Sun Jul 31 19:00:31 2005 UTC vs.
Revision 1.116 by root, Sat May 10 19:25:33 2008 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
5#include "autoconf/config.h" 9#include <stddef.h>
6 10#include <stdlib.h>
11#include <errno.h>
7#include <sys/types.h> 12#include <sys/types.h>
8#include <sys/stat.h> 13#include <sys/stat.h>
9
10#include <unistd.h> 14#include <limits.h>
11#include <fcntl.h> 15#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 16#include <sched.h>
14 17
15#ifndef _REENTRANT 18#ifdef _WIN32
16# define _REENTRANT 1 19
20# define EIO_STRUCT_DIRENT Direntry_t
21# undef malloc
22# undef free
23
24// perl overrides all those nice win32 functions
25# undef open
26# undef read
27# undef write
28# undef send
29# undef recv
30# undef stat
31# undef fstat
32# define lstat stat
33# undef truncate
34# undef ftruncate
35# undef open
36# undef close
37# undef unlink
38# undef rmdir
39# undef rename
40# undef lseek
41
42# define chown(a,b,c) (errno = ENOSYS, -1)
43# define fchown(a,b,c) (errno = ENOSYS, -1)
44# define fchmod(a,b) (errno = ENOSYS, -1)
45# define symlink(a,b) (errno = ENOSYS, -1)
46# define readlink(a,b,c) (errno = ENOSYS, -1)
47# define mknod(a,b,c) (errno = ENOSYS, -1)
48# define truncate(a,b) (errno = ENOSYS, -1)
49# define ftruncate(fd,o) chsize ((fd), (o))
50# define fsync(fd) _commit (fd)
51# define opendir(fd) (errno = ENOSYS, 0)
52# define readdir(fd) (errno = ENOSYS, -1)
53# define closedir(fd) (errno = ENOSYS, -1)
54# define mkdir(a,b) mkdir (a)
55
56#else
57
58# include <sys/time.h>
59# include <sys/select.h>
60# include <unistd.h>
61# include <utime.h>
62# include <signal.h>
63# define EIO_STRUCT_DIRENT struct dirent
64
17#endif 65#endif
18#include <errno.h>
19 66
20#include <pthread.h> 67#define EIO_STRUCT_STAT Stat_t
21 68
22typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 69/* use NV for 32 bit perls as it allows larger offsets */
23typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 70#if IVSIZE >= 8
24typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 71# define SvVAL64 SvIV
25
26#if __ia64
27# define STACKSIZE 65536
28#else 72#else
29# define STACKSIZE 4096 73# define SvVAL64 SvNV
30#endif 74#endif
31 75
76static HV *stash;
77typedef SV SV8; /* byte-sv, used for argument-checking */
78
79#define AIO_REQ_KLASS "IO::AIO::REQ"
80#define AIO_GRP_KLASS "IO::AIO::GRP"
81
82#define EIO_COMMON \
83 SV *callback; \
84 SV *sv1, *sv2; \
85 STRLEN stroffset; \
86 SV *self
87
88#include "libeio/eio.h"
89
90static int req_invoke (eio_req *req);
91#define EIO_FINISH(req) req_invoke (req)
92static void aio_grp_feed (eio_req *grp);
93#define EIO_FEED(req) aio_grp_feed (req)
94static void req_destroy (eio_req *grp);
95#define EIO_DESTROY(req) req_destroy (req)
96
32enum { 97enum {
33 REQ_QUIT, 98 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
34 REQ_OPEN, REQ_CLOSE,
35 REQ_READ, REQ_WRITE, REQ_READAHEAD,
36 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
37 REQ_FSYNC, REQ_FDATASYNC,
38}; 99};
39 100
40typedef struct aio_cb { 101#include "libeio/eio.c"
41 struct aio_cb *volatile next;
42 102
43 int type;
44
45 int fd;
46 off_t offset;
47 size_t length;
48 ssize_t result;
49 mode_t mode; /* open */
50 int errorno;
51 SV *data, *callback, *fh;
52 void *dataptr;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb;
57
58typedef aio_cb *aio_req; 103typedef eio_req *aio_req;
104typedef eio_req *aio_req_ornot;
59 105
60static int started;
61static volatile int nreqs;
62static int max_outstanding = 1<<30; 106static int max_outstanding = 0;
63static int respipe [2];
64 107
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 108static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 109
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 110static int respipe_osf [2], respipe [2] = { -1, -1 };
70static volatile aio_req ress, rese; /* queue start, queue end */
71 111
72static void 112static void req_destroy (aio_req req);
73poll_wait () 113static void req_cancel (aio_req req);
114
115static void want_poll (void)
74{ 116{
75 if (nreqs && !ress) 117 /* write a dummy byte to the pipe so fh becomes ready */
118 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
119}
120
121static void done_poll (void)
122{
123 /* read any signals sent by the worker threads */
124 char buf [4];
125 while (respipe_read (respipe [0], buf, 4) == 4)
126 ;
127}
128
129/* must be called at most once */
130static SV *req_sv (aio_req req, const char *klass)
131{
132 if (!req->self)
76 { 133 {
77 fd_set rfd; 134 req->self = (SV *)newHV ();
78 FD_ZERO(&rfd); 135 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
79 FD_SET(respipe [0], &rfd);
80
81 select (respipe [0] + 1, &rfd, 0, 0, 0);
82 } 136 }
83}
84 137
85static int 138 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
86poll_cb () 139}
140
141static aio_req SvAIO_REQ (SV *sv)
142{
143 MAGIC *mg;
144
145 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
146 croak ("object of class " AIO_REQ_KLASS " expected");
147
148 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
149
150 return mg ? (aio_req)mg->mg_ptr : 0;
151}
152
153static void aio_grp_feed (aio_req grp)
154{
155 if (grp->sv2 && SvOK (grp->sv2))
156 {
157 dSP;
158
159 ENTER;
160 SAVETMPS;
161 PUSHMARK (SP);
162 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
163 PUTBACK;
164 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
165 SPAGAIN;
166 FREETMPS;
167 LEAVE;
168 }
169}
170
171static int req_invoke (eio_req *req)
87{ 172{
88 dSP; 173 dSP;
89 int count = 0;
90 aio_req req, prv;
91 174
92 pthread_mutex_lock (&reslock); 175 if (req->flags & FLAG_SV2_RO_OFF)
176 SvREADONLY_off (req->sv2);
93 177
94 { 178 if (!EIO_CANCELLED (req) && SvOK (req->callback))
95 /* read any signals sent by the worker threads */
96 char buf [32];
97 while (read (respipe [0], buf, 32) > 0)
98 ;
99 }
100
101 req = ress;
102 ress = rese = 0;
103
104 pthread_mutex_unlock (&reslock);
105
106 while (req)
107 { 179 {
108 nreqs--; 180 ENTER;
181 SAVETMPS;
182 PUSHMARK (SP);
183 EXTEND (SP, 1);
109 184
110 if (req->type == REQ_QUIT) 185 switch (req->type)
111 started--;
112 else
113 { 186 {
114 int errorno = errno; 187 case EIO_READDIR:
115 errno = req->errorno;
116
117 if (req->type == REQ_READ)
118 SvCUR_set (req->data, req->dataoffset
119 + req->result > 0 ? req->result : 0);
120
121 if (req->data)
122 SvREFCNT_dec (req->data);
123
124 if (req->fh)
125 SvREFCNT_dec (req->fh);
126
127 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
128 { 188 {
129 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 189 SV *rv = &PL_sv_undef;
130 PL_laststatval = req->result;
131 PL_statcache = *(req->statdata);
132 190
133 Safefree (req->statdata); 191 if (req->result >= 0)
192 {
193 int i;
194 char *buf = req->ptr2;
195 AV *av = newAV ();
196
197 av_extend (av, req->result - 1);
198
199 for (i = 0; i < req->result; ++i)
200 {
201 SV *sv = newSVpv (buf, 0);
202
203 av_store (av, i, sv);
204 buf += SvCUR (sv) + 1;
205 }
206
207 rv = sv_2mortal (newRV_noinc ((SV *)av));
208 }
209
210 PUSHs (rv);
134 } 211 }
212 break;
135 213
136 ENTER; 214 case EIO_OPEN:
137 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result)));
139
140 if (req->type == REQ_OPEN)
141 { 215 {
142 /* convert fd to fh */ 216 /* convert fd to fh */
143 SV *fh; 217 SV *fh = &PL_sv_undef;
144 218
145 PUTBACK; 219 if (req->result >= 0)
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 220 {
147 SPAGAIN; 221 GV *gv = (GV *)sv_newmortal ();
222 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
223 char sym [64];
224 int symlen;
225
226 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
227 gv_init (gv, stash, sym, symlen, 0);
148 228
149 fh = SvREFCNT_inc (POPs); 229 symlen = snprintf (
230 sym,
231 sizeof (sym),
232 "%s&=%d",
233 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
234 req->result
235 );
150 236
237 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
238 fh = (SV *)gv;
239 }
240
151 PUSHMARK (SP); 241 PUSHs (fh);
152 XPUSHs (sv_2mortal (fh));
153 } 242 }
154
155 if (SvOK (req->callback))
156 {
157 PUTBACK;
158 call_sv (req->callback, G_VOID | G_EVAL);
159 SPAGAIN;
160 }
161
162 LEAVE;
163
164 if (req->callback)
165 SvREFCNT_dec (req->callback);
166
167 errno = errorno;
168 count++;
169 }
170
171 prv = req;
172 req = req->next;
173 Safefree (prv);
174
175 /* TODO: croak on errors? */
176 }
177
178 return count;
179}
180
181static void *aio_proc(void *arg);
182
183static void
184start_thread (void)
185{
186 sigset_t fullsigset, oldsigset;
187 pthread_t tid;
188 pthread_attr_t attr;
189
190 pthread_attr_init (&attr);
191 pthread_attr_setstacksize (&attr, STACKSIZE);
192 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
193
194 sigfillset (&fullsigset);
195 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
196
197 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
198 started++;
199
200 sigprocmask (SIG_SETMASK, &oldsigset, 0);
201}
202
203static void
204send_req (aio_req req)
205{
206 nreqs++;
207
208 pthread_mutex_lock (&reqlock);
209
210 req->next = 0;
211
212 if (reqe)
213 {
214 reqe->next = req;
215 reqe = req;
216 }
217 else
218 reqe = reqs = req;
219
220 pthread_cond_signal (&reqwait);
221 pthread_mutex_unlock (&reqlock);
222
223 while (nreqs > max_outstanding)
224 {
225 poll_wait ();
226 poll_cb ();
227 }
228}
229
230static void
231end_thread (void)
232{
233 aio_req req;
234 New (0, req, 1, aio_cb);
235 req->type = REQ_QUIT;
236
237 send_req (req);
238}
239
240/* work around various missing functions */
241
242#if !HAVE_PREADWRITE
243# define pread aio_pread
244# define pwrite aio_pwrite
245
246/*
247 * make our pread/pwrite safe against themselves, but not against
248 * normal read/write by using a mutex. slows down execution a lot,
249 * but that's your problem, not mine.
250 */
251static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
252
253static ssize_t
254pread (int fd, void *buf, size_t count, off_t offset)
255{
256 ssize_t res;
257 off_t ooffset;
258
259 pthread_mutex_lock (&iolock);
260 ooffset = lseek (fd, 0, SEEK_CUR);
261 lseek (fd, offset, SEEK_SET);
262 res = read (fd, buf, count);
263 lseek (fd, ooffset, SEEK_SET);
264 pthread_mutex_unlock (&iolock);
265
266 return res;
267}
268
269static ssize_t
270pwrite (int fd, void *buf, size_t count, off_t offset)
271{
272 ssize_t res;
273 off_t ooffset;
274
275 pthread_mutex_lock (&iolock);
276 ooffset = lseek (fd, 0, SEEK_CUR);
277 lseek (fd, offset, SEEK_SET);
278 res = write (fd, buf, count);
279 lseek (fd, offset, SEEK_SET);
280 pthread_mutex_unlock (&iolock);
281
282 return res;
283}
284#endif
285
286#if !HAVE_FDATASYNC
287# define fdatasync fsync
288#endif
289
290#if !HAVE_READAHEAD
291# define readahead aio_readahead
292
293static char readahead_buf[4096];
294
295static ssize_t
296readahead (int fd, off_t offset, size_t count)
297{
298 while (count > 0)
299 {
300 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301
302 pread (fd, readahead_buf, len, offset);
303 offset += len;
304 count -= len;
305 }
306
307 errno = 0;
308}
309#endif
310
311static void *
312aio_proc (void *thr_arg)
313{
314 aio_req req;
315 int type;
316
317 do
318 {
319 pthread_mutex_lock (&reqlock);
320
321 for (;;)
322 {
323 req = reqs;
324
325 if (reqs)
326 {
327 reqs = reqs->next;
328 if (!reqs) reqe = 0;
329 }
330
331 if (req)
332 break; 243 break;
333 244
334 pthread_cond_wait (&reqwait, &reqlock); 245 case EIO_GROUP:
335 } 246 req->int1 = 2; /* mark group as finished */
336 247
337 pthread_mutex_unlock (&reqlock); 248 if (req->sv1)
338
339 errno = 0; /* strictly unnecessary */
340
341 type = req->type;
342
343 switch (type)
344 { 249 {
345 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 250 int i;
346 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 251 AV *av = (AV *)req->sv1;
347 252
348 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 253 EXTEND (SP, AvFILL (av) + 1);
349 254 for (i = 0; i <= AvFILL (av); ++i)
350 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 255 PUSHs (*av_fetch (av, i, 0));
351 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 256 }
352 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353
354 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
355 case REQ_CLOSE: req->result = close (req->fd); break;
356 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
357
358 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359 case REQ_FSYNC: req->result = fsync (req->fd); break;
360
361 case REQ_QUIT:
362 break; 257 break;
363 258
259 case EIO_NOP:
260 case EIO_BUSY:
261 break;
262
263 case EIO_READLINK:
264 if (req->result > 0)
265 {
266 SvCUR_set (req->sv2, req->result);
267 *SvEND (req->sv2) = 0;
268 PUSHs (req->sv2);
269 }
270 break;
271
272 case EIO_STAT:
273 case EIO_LSTAT:
274 case EIO_FSTAT:
275 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
276 PL_laststatval = req->result;
277 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
278 PUSHs (sv_2mortal (newSViv (req->result)));
279 break;
280
281 case EIO_READ:
282 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
283 *SvEND (req->sv2) = 0;
284 PUSHs (sv_2mortal (newSViv (req->result)));
285 break;
286
287 case EIO_DUP2:
288 if (req->result > 0)
289 req->result = 0;
290 /* FALLTHROUGH */
291
364 default: 292 default:
365 req->result = ENOSYS; 293 PUSHs (sv_2mortal (newSViv (req->result)));
366 break; 294 break;
367 } 295 }
368 296
369 req->errorno = errno; 297 errno = req->errorno;
370 298
371 pthread_mutex_lock (&reslock); 299 PUTBACK;
300 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
301 SPAGAIN;
372 302
373 req->next = 0; 303 FREETMPS;
304 LEAVE;
374 305
375 if (rese) 306 PUTBACK;
376 {
377 rese->next = req;
378 rese = req;
379 }
380 else
381 {
382 rese = ress = req;
383
384 /* write a dummy byte to the pipe so fh becomes ready */
385 write (respipe [1], &respipe, 1);
386 }
387
388 pthread_mutex_unlock (&reslock);
389 } 307 }
390 while (type != REQ_QUIT);
391 308
309 return !!SvTRUE (ERRSV);
310}
311
312static void req_destroy (aio_req req)
313{
314 if (req->self)
315 {
316 sv_unmagic (req->self, PERL_MAGIC_ext);
317 SvREFCNT_dec (req->self);
318 }
319
320 SvREFCNT_dec (req->sv1);
321 SvREFCNT_dec (req->sv2);
322 SvREFCNT_dec (req->callback);
323
324 Safefree (req);
325}
326
327static void req_cancel_subs (aio_req grp)
328{
329 aio_req sub;
330
331 if (grp->type != EIO_GROUP)
332 return;
333
334 SvREFCNT_dec (grp->sv2);
335 grp->sv2 = 0;
336
337 eio_grp_cancel (grp);
338}
339
340#ifdef USE_SOCKETS_AS_HANDLES
341# define TO_SOCKET(x) (win32_get_osfhandle (x))
342#else
343# define TO_SOCKET(x) (x)
344#endif
345
346static void
347create_respipe (void)
348{
349 int old_readfd = respipe [0];
350
351 if (respipe [1] >= 0)
352 respipe_close (TO_SOCKET (respipe [1]));
353
354#ifdef _WIN32
355 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
356#else
357 if (pipe (respipe))
358#endif
359 croak ("unable to initialize result pipe");
360
361 if (old_readfd >= 0)
362 {
363 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
364 croak ("unable to initialize result pipe(2)");
365
366 respipe_close (respipe [0]);
367 respipe [0] = old_readfd;
368 }
369
370#ifdef _WIN32
371 int arg = 1;
372 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
373 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
374#else
375 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
376 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
377#endif
378 croak ("unable to initialize result pipe(3)");
379
380 respipe_osf [0] = TO_SOCKET (respipe [0]);
381 respipe_osf [1] = TO_SOCKET (respipe [1]);
382}
383
384static void poll_wait (void)
385{
386 fd_set rfd;
387
388 while (eio_nreqs ())
389 {
390 int size;
391
392 X_LOCK (reslock);
393 size = res_queue.size;
394 X_UNLOCK (reslock);
395
396 if (size)
397 return;
398
399 maybe_start_thread ();
400
401 FD_ZERO (&rfd);
402 FD_SET (respipe [0], &rfd);
403
404 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
405 }
406}
407
408static int poll_cb (void)
409{
410 int res;
411
412 do
413 {
414 res = eio_poll ();
415
416 if (res > 0)
417 croak (0);
418 }
419 while (max_outstanding && max_outstanding <= eio_nreqs ());
420
392 return 0; 421 return res;
393} 422}
394 423
424static void atfork_child (void)
425{
426 create_respipe ();
427}
428
429#define dREQ \
430 aio_req req; \
431 int req_pri = next_pri; \
432 next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
433 \
434 if (SvOK (callback) && !SvROK (callback)) \
435 croak ("callback must be undef or of reference type"); \
436 \
437 Newz (0, req, 1, eio_req); \
438 if (!req) \
439 croak ("out of memory during eio_req allocation"); \
440 \
441 req->callback = newSVsv (callback); \
442 req->pri = req_pri
443
444#define REQ_SEND \
445 eio_submit (req); \
446 \
447 if (GIMME_V != G_VOID) \
448 XPUSHs (req_sv (req, AIO_REQ_KLASS));
449
395MODULE = IO::AIO PACKAGE = IO::AIO 450MODULE = IO::AIO PACKAGE = IO::AIO
396 451
397PROTOTYPES: ENABLE 452PROTOTYPES: ENABLE
398 453
399BOOT: 454BOOT:
400{ 455{
401 if (pipe (respipe)) 456 stash = gv_stashpv ("IO::AIO", 1);
402 croak ("unable to initialize result pipe");
403 457
404 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 458 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
405 croak ("cannot set result pipe to nonblocking mode"); 459 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
460 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
461 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
462 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
463#ifdef _WIN32
464 X_MUTEX_CHECK (wrklock);
465 X_MUTEX_CHECK (reslock);
466 X_MUTEX_CHECK (reqlock);
467 X_MUTEX_CHECK (reqwait);
468 X_MUTEX_CHECK (preadwritelock);
469 X_MUTEX_CHECK (readdirlock);
406 470
407 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 471 X_COND_CHECK (reqwait);
408 croak ("cannot set result pipe to nonblocking mode"); 472#else
409} 473 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
474#endif
410 475
476 create_respipe ();
477
478 if (eio_init (want_poll, done_poll) < 0)
479 croak ("IO::AIO: unable to initialise eio library");
480
481 /* atfork child called in fifo order, so before eio's handler */
482 X_THREAD_ATFORK (0, 0, atfork_child);
483}
484
411void 485void
412min_parallel(nthreads) 486max_poll_reqs (int nreqs)
413 int nthreads
414 PROTOTYPE: $ 487 PROTOTYPE: $
415 CODE: 488 CODE:
416 while (nthreads > started) 489 eio_set_max_poll_reqs (nreqs);
417 start_thread ();
418 490
419void 491void
420max_parallel(nthreads) 492max_poll_time (double nseconds)
421 int nthreads
422 PROTOTYPE: $ 493 PROTOTYPE: $
423 CODE: 494 CODE:
495 eio_set_max_poll_time (nseconds);
496
497void
498min_parallel (int nthreads)
499 PROTOTYPE: $
500 CODE:
501 eio_set_min_parallel (nthreads);
502
503void
504max_parallel (int nthreads)
505 PROTOTYPE: $
506 CODE:
507 eio_set_max_parallel (nthreads);
508
509void
510max_idle (int nthreads)
511 PROTOTYPE: $
512 CODE:
513 eio_set_max_idle (nthreads);
514
515void
516max_outstanding (int maxreqs)
517 PROTOTYPE: $
518 CODE:
519 max_outstanding = maxreqs;
520
521void
522aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
523 PROTOTYPE: $$$;$
524 PPCODE:
424{ 525{
425 int cur = started; 526 dREQ;
426 while (cur > nthreads) 527
427 { 528 req->type = EIO_OPEN;
428 end_thread (); 529 req->sv1 = newSVsv (pathname);
530 req->ptr1 = SvPVbyte_nolen (req->sv1);
531 req->int1 = flags;
532 req->int2 = mode;
533
534 REQ_SEND;
535}
536
537void
538aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
539 PROTOTYPE: $;$
540 ALIAS:
541 aio_fsync = EIO_FSYNC
542 aio_fdatasync = EIO_FDATASYNC
543 PPCODE:
544{
545 dREQ;
546
547 req->type = ix;
548 req->sv1 = newSVsv (fh);
549 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
550
551 REQ_SEND (req);
552}
553
554void
555aio_close (SV *fh, SV *callback=&PL_sv_undef)
556 PROTOTYPE: $;$
557 PPCODE:
558{
559 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
560 dREQ;
561
562 if (close_pipe < 0)
563 {
564 int pipefd [2];
565
566 if (pipe (pipefd) < 0
567 || close (pipefd [1]) < 0
568 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
569 abort (); /*D*/
570
571 close_pipe = pipefd [0];
572 }
573
574 req->type = EIO_DUP2;
575 req->int1 = close_pipe;
576 req->sv2 = newSVsv (fh);
577 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
578
579 REQ_SEND (req);
580}
581
582void
583aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
584 ALIAS:
585 aio_read = EIO_READ
586 aio_write = EIO_WRITE
587 PROTOTYPE: $$$$$;$
588 PPCODE:
589{
590 STRLEN svlen;
591 char *svptr = SvPVbyte (data, svlen);
592 UV len = SvUV (length);
593
594 SvUPGRADE (data, SVt_PV);
595 SvPOK_on (data);
596
597 if (dataoffset < 0)
598 dataoffset += svlen;
599
600 if (dataoffset < 0 || dataoffset > svlen)
601 croak ("dataoffset outside of data scalar");
602
603 if (ix == EIO_WRITE)
604 {
605 /* write: check length and adjust. */
606 if (!SvOK (length) || len + dataoffset > svlen)
607 len = svlen - dataoffset;
608 }
609 else
610 {
611 /* read: grow scalar as necessary */
612 svptr = SvGROW (data, len + dataoffset + 1);
613 }
614
615 if (len < 0)
616 croak ("length must not be negative");
617
618 {
619 dREQ;
620
621 req->type = ix;
622 req->sv1 = newSVsv (fh);
623 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
624 : IoOFP (sv_2io (fh)));
625 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
626 req->size = len;
627 req->sv2 = SvREFCNT_inc (data);
628 req->ptr2 = (char *)svptr + dataoffset;
629 req->stroffset = dataoffset;
630
631 if (!SvREADONLY (data))
429 cur--; 632 {
633 SvREADONLY_on (data);
634 req->flags |= FLAG_SV2_RO_OFF;
430 } 635 }
431 636
432 while (started > nthreads) 637 REQ_SEND;
638 }
639}
640
641void
642aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
643 PROTOTYPE: $$;$
644 PPCODE:
645{
646 SV *data;
647 dREQ;
648
649 data = newSV (NAME_MAX);
650 SvPOK_on (data);
651
652 req->type = EIO_READLINK;
653 req->sv1 = newSVsv (path);
654 req->ptr1 = SvPVbyte_nolen (req->sv1);
655 req->sv2 = data;
656 req->ptr2 = SvPVbyte_nolen (data);
657
658 REQ_SEND;
659}
660
661void
662aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
663 PROTOTYPE: $$$$;$
664 PPCODE:
665{
666 dREQ;
667
668 req->type = EIO_SENDFILE;
669 req->sv1 = newSVsv (out_fh);
670 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
671 req->sv2 = newSVsv (in_fh);
672 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
673 req->offs = SvVAL64 (in_offset);
674 req->size = length;
675
676 REQ_SEND;
677}
678
679void
680aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
681 PROTOTYPE: $$$;$
682 PPCODE:
683{
684 dREQ;
685
686 req->type = EIO_READAHEAD;
687 req->sv1 = newSVsv (fh);
688 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
689 req->offs = SvVAL64 (offset);
690 req->size = length;
691
692 REQ_SEND;
693}
694
695void
696aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
697 ALIAS:
698 aio_stat = EIO_STAT
699 aio_lstat = EIO_LSTAT
700 PPCODE:
701{
702 dREQ;
703
704 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
705 if (!req->ptr2)
706 {
707 req_destroy (req);
708 croak ("out of memory during aio_stat statdata allocation");
709 }
710
711 req->flags |= EIO_FLAG_PTR2_FREE;
712 req->sv1 = newSVsv (fh_or_path);
713
714 if (SvPOK (fh_or_path))
715 {
716 req->type = ix;
717 req->ptr1 = SvPVbyte_nolen (req->sv1);
718 }
719 else
720 {
721 req->type = EIO_FSTAT;
722 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
723 }
724
725 REQ_SEND;
726}
727
728void
729aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
730 PPCODE:
731{
732 dREQ;
733
734 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
735 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
736 req->sv1 = newSVsv (fh_or_path);
737
738 if (SvPOK (fh_or_path))
739 {
740 req->type = EIO_UTIME;
741 req->ptr1 = SvPVbyte_nolen (req->sv1);
742 }
743 else
744 {
745 req->type = EIO_FUTIME;
746 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
747 }
748
749 REQ_SEND;
750}
751
752void
753aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
754 PPCODE:
755{
756 dREQ;
757
758 req->sv1 = newSVsv (fh_or_path);
759 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
760
761 if (SvPOK (fh_or_path))
762 {
763 req->type = EIO_TRUNCATE;
764 req->ptr1 = SvPVbyte_nolen (req->sv1);
765 }
766 else
767 {
768 req->type = EIO_FTRUNCATE;
769 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
770 }
771
772 REQ_SEND;
773}
774
775void
776aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
777 ALIAS:
778 aio_chmod = EIO_CHMOD
779 aio_fchmod = EIO_FCHMOD
780 aio_mkdir = EIO_MKDIR
781 PPCODE:
782{
783 dREQ;
784
785 req->type = ix;
786 req->int2 = mode;
787 req->sv1 = newSVsv (fh_or_path);
788
789 if (ix == EIO_FCHMOD)
790 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
791 else
792 req->ptr1 = SvPVbyte_nolen (req->sv1);
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 (fh_or_path))
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 - EIO_PRI_BIAS;
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 + EIO_PRI_BIAS;
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 + EIO_PRI_BIAS;
932
933void
934flush ()
935 PROTOTYPE:
936 CODE:
937 while (eio_nreqs ())
433 { 938 {
434 poll_wait (); 939 poll_wait ();
435 poll_cb (); 940 poll_cb ();
436 } 941 }
437}
438 942
439int 943int
440max_outstanding(nreqs)
441 int nreqs
442 PROTOTYPE: $
443 CODE:
444 RETVAL = max_outstanding;
445 max_outstanding = nreqs;
446
447void
448aio_open(pathname,flags,mode,callback=&PL_sv_undef)
449 SV * pathname
450 int flags
451 int mode
452 SV * callback
453 PROTOTYPE: $$$;$
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = REQ_OPEN;
464 req->data = newSVsv (pathname);
465 req->dataptr = SvPV_nolen (req->data);
466 req->fd = flags;
467 req->mode = mode;
468 req->callback = SvREFCNT_inc (callback);
469
470 send_req (req);
471}
472
473void
474aio_close(fh,callback=&PL_sv_undef)
475 SV * fh
476 SV * callback
477 PROTOTYPE: $;$
478 ALIAS:
479 aio_close = REQ_CLOSE
480 aio_fsync = REQ_FSYNC
481 aio_fdatasync = REQ_FDATASYNC
482 CODE:
483{
484 aio_req req;
485
486 Newz (0, req, 1, aio_cb);
487
488 if (!req)
489 croak ("out of memory during aio_req allocation");
490
491 req->type = ix;
492 req->fh = newSVsv (fh);
493 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494 req->callback = SvREFCNT_inc (callback);
495
496 send_req (req);
497}
498
499void
500aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501 SV * fh
502 UV offset
503 IV length
504 SV * data
505 IV dataoffset
506 SV * callback
507 ALIAS:
508 aio_read = REQ_READ
509 aio_write = REQ_WRITE
510 PROTOTYPE: $$$$$;$
511 CODE:
512{
513 aio_req req;
514 STRLEN svlen;
515 char *svptr = SvPV (data, svlen);
516
517 SvUPGRADE (data, SVt_PV);
518 SvPOK_on (data);
519
520 if (dataoffset < 0)
521 dataoffset += svlen;
522
523 if (dataoffset < 0 || dataoffset > svlen)
524 croak ("data offset outside of string");
525
526 if (ix == REQ_WRITE)
527 {
528 /* write: check length and adjust. */
529 if (length < 0 || length + dataoffset > svlen)
530 length = svlen - dataoffset;
531 }
532 else
533 {
534 /* read: grow scalar as necessary */
535 svptr = SvGROW (data, length + dataoffset);
536 }
537
538 if (length < 0)
539 croak ("length must not be negative");
540
541 Newz (0, req, 1, aio_cb);
542
543 if (!req)
544 croak ("out of memory during aio_req allocation");
545
546 req->type = ix;
547 req->fh = newSVsv (fh);
548 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549 : IoOFP (sv_2io (fh)));
550 req->offset = offset;
551 req->length = length;
552 req->data = SvREFCNT_inc (data);
553 req->dataptr = (char *)svptr + dataoffset;
554 req->callback = SvREFCNT_inc (callback);
555
556 send_req (req);
557}
558
559void
560aio_readahead(fh,offset,length,callback=&PL_sv_undef)
561 SV * fh
562 UV offset
563 IV length
564 SV * callback
565 PROTOTYPE: $$$;$
566 CODE:
567{
568 aio_req req;
569
570 if (length < 0)
571 croak ("length must not be negative");
572
573 Newz (0, req, 1, aio_cb);
574
575 if (!req)
576 croak ("out of memory during aio_req allocation");
577
578 req->type = REQ_READAHEAD;
579 req->fh = newSVsv (fh);
580 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581 req->offset = offset;
582 req->length = length;
583 req->callback = SvREFCNT_inc (callback);
584
585 send_req (req);
586}
587
588void
589aio_stat(fh_or_path,callback=&PL_sv_undef)
590 SV * fh_or_path
591 SV * callback
592 ALIAS:
593 aio_stat = REQ_STAT
594 aio_lstat = REQ_LSTAT
595 CODE:
596{
597 aio_req req;
598
599 Newz (0, req, 1, aio_cb);
600
601 if (!req)
602 croak ("out of memory during aio_req allocation");
603
604 New (0, req->statdata, 1, Stat_t);
605
606 if (!req->statdata)
607 croak ("out of memory during aio_req->statdata allocation");
608
609 if (SvPOK (fh_or_path))
610 {
611 req->type = ix;
612 req->data = newSVsv (fh_or_path);
613 req->dataptr = SvPV_nolen (req->data);
614 }
615 else
616 {
617 req->type = REQ_FSTAT;
618 req->fh = newSVsv (fh_or_path);
619 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620 }
621
622 req->callback = SvREFCNT_inc (callback);
623
624 send_req (req);
625}
626
627void
628aio_unlink(pathname,callback=&PL_sv_undef)
629 SV * pathname
630 SV * callback
631 CODE:
632{
633 aio_req req;
634
635 Newz (0, req, 1, aio_cb);
636
637 if (!req)
638 croak ("out of memory during aio_req allocation");
639
640 req->type = REQ_UNLINK;
641 req->data = newSVsv (pathname);
642 req->dataptr = SvPV_nolen (req->data);
643 req->callback = SvREFCNT_inc (callback);
644
645 send_req (req);
646}
647
648void
649flush()
650 PROTOTYPE:
651 CODE:
652 while (nreqs)
653 {
654 poll_wait ();
655 poll_cb ();
656 }
657
658void
659poll() 944poll()
660 PROTOTYPE: 945 PROTOTYPE:
661 CODE: 946 CODE:
662 if (nreqs)
663 {
664 poll_wait (); 947 poll_wait ();
665 poll_cb (); 948 RETVAL = poll_cb ();
666 } 949 OUTPUT:
950 RETVAL
667 951
668int 952int
669poll_fileno() 953poll_fileno()
670 PROTOTYPE: 954 PROTOTYPE:
671 CODE: 955 CODE:
… …
683 967
684void 968void
685poll_wait() 969poll_wait()
686 PROTOTYPE: 970 PROTOTYPE:
687 CODE: 971 CODE:
688 if (nreqs)
689 poll_wait (); 972 poll_wait ();
690 973
691int 974int
692nreqs() 975nreqs()
693 PROTOTYPE: 976 PROTOTYPE:
694 CODE: 977 CODE:
695 RETVAL = nreqs; 978 RETVAL = eio_nreqs ();
696 OUTPUT: 979 OUTPUT:
697 RETVAL 980 RETVAL
698 981
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 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1003 RETVAL = started;
1004 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1005 OUTPUT:
1006 RETVAL
1007
1008PROTOTYPES: DISABLE
1009
1010MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1011
1012void
1013cancel (aio_req_ornot req)
1014 CODE:
1015 eio_cancel (req);
1016
1017void
1018cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1019 CODE:
1020 SvREFCNT_dec (req->callback);
1021 req->callback = newSVsv (callback);
1022
1023MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1024
1025void
1026add (aio_req grp, ...)
1027 PPCODE:
1028{
1029 int i;
1030
1031 if (grp->int1 == 2)
1032 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1033
1034 for (i = 1; i < items; ++i )
1035 {
1036 aio_req req;
1037
1038 if (GIMME_V != G_VOID)
1039 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1040
1041 req = SvAIO_REQ (ST (i));
1042
1043 if (req)
1044 eio_grp_add (grp, req);
1045 }
1046}
1047
1048void
1049cancel_subs (aio_req_ornot req)
1050 CODE:
1051 req_cancel_subs (req);
1052
1053void
1054result (aio_req grp, ...)
1055 CODE:
1056{
1057 int i;
1058 AV *av;
1059
1060 grp->errorno = errno;
1061
1062 av = newAV ();
1063
1064 for (i = 1; i < items; ++i )
1065 av_push (av, newSVsv (ST (i)));
1066
1067 SvREFCNT_dec (grp->sv1);
1068 grp->sv1 = (SV *)av;
1069}
1070
1071void
1072errno (aio_req grp, int errorno = errno)
1073 CODE:
1074 grp->errorno = errorno;
1075
1076void
1077limit (aio_req grp, int limit)
1078 CODE:
1079 eio_grp_limit (grp, limit);
1080
1081void
1082feed (aio_req grp, SV *callback=&PL_sv_undef)
1083 CODE:
1084{
1085 SvREFCNT_dec (grp->sv2);
1086 grp->sv2 = newSVsv (callback);
1087
1088 if (grp->int2 <= 0)
1089 grp->int2 = 2;
1090
1091 eio_grp_limit (grp, grp->int2);
1092}
1093

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