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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.117 by root, Sat May 10 20:02:09 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#ifdef _WIN32
16#include <sys/syscall.h>
17 19
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20# define EIO_STRUCT_DIRENT Direntry_t
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21# undef malloc
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 22# undef free
21 23
22#if __i386 || __amd64 24// perl overrides all those nice win32 functions
23# define STACKSIZE ( 256 * sizeof (long)) 25# undef open
24#elif __ia64 26# undef read
25# define STACKSIZE (8192 * sizeof (long)) 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
26#else 56#else
27# define STACKSIZE ( 512 * sizeof (long)) 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
28#endif 65#endif
29 66
67#define EIO_STRUCT_STAT Stat_t
68
69/* use NV for 32 bit perls as it allows larger offsets */
70#if IVSIZE >= 8
71# define SvVAL64 SvIV
72#else
73# define SvVAL64 SvNV
74#endif
75
76static HV *stash;
77typedef SV SV8; /* byte-sv, used for argument-checking */
78
79#define AIO_REQ_KLASS "IO::AIO::REQ"
80#define AIO_GRP_KLASS "IO::AIO::GRP"
81
82#define EIO_COMMON \
83 SV *callback; \
84 SV *sv1, *sv2; \
85 STRLEN stroffset; \
86 SV *self
87
88#include "libeio/eio.h"
89
90static int req_invoke (eio_req *req);
91#define EIO_FINISH(req) req_invoke (req)
92static void aio_grp_feed (eio_req *grp);
93#define EIO_FEED(req) aio_grp_feed (req)
94static void req_destroy (eio_req *grp);
95#define EIO_DESTROY(req) req_destroy (req)
96
30enum { 97enum {
31 REQ_QUIT, 98 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}; 99};
37 100
38typedef struct aio_cb { 101#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 102
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; 103typedef eio_req *aio_req;
104typedef eio_req *aio_req_ornot;
57 105
58static int started; 106static SV *on_next_submit;
59static int nreqs; 107static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
60static int respipe [2]; 108static int max_outstanding;
61 109
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 110static int respipe_osf [2], respipe [2] = { -1, -1 };
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 111
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 112static void req_destroy (aio_req req);
67static volatile aio_req ress, rese; /* queue start, queue end */ 113static void req_cancel (aio_req req);
68 114
69static void *aio_proc(void *arg); 115static void want_poll (void)
70
71static void
72start_thread (void)
73{ 116{
74 sigset_t fullsigset, oldsigset; 117 /* write a dummy byte to the pipe so fh becomes ready */
75 pthread_t tid; 118 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
76 pthread_attr_t attr;
77
78 pthread_attr_init (&attr);
79 pthread_attr_setstacksize (&attr, STACKSIZE);
80 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
81
82 sigfillset (&fullsigset);
83 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
84
85 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
86 started++;
87
88 sigprocmask (SIG_SETMASK, &oldsigset, 0);
89} 119}
90 120
91static void 121static void done_poll (void)
92send_req (aio_req req)
93{ 122{
94 nreqs++; 123 /* read any signals sent by the worker threads */
124 char buf [4];
125 while (respipe_read (respipe [0], buf, 4) == 4)
126 ;
127}
95 128
96 pthread_mutex_lock (&reqlock); 129/* must be called at most once */
97 130static SV *req_sv (aio_req req, const char *klass)
98 req->next = 0; 131{
99
100 if (reqe) 132 if (!req->self)
101 { 133 {
102 reqe->next = req; 134 req->self = (SV *)newHV ();
103 reqe = req; 135 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
104 } 136 }
105 else
106 reqe = reqs = req;
107 137
108 pthread_cond_signal (&reqwait); 138 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
109 pthread_mutex_unlock (&reqlock);
110} 139}
111 140
112static void 141static aio_req SvAIO_REQ (SV *sv)
113end_thread (void)
114{ 142{
115 aio_req req; 143 MAGIC *mg;
116 New (0, req, 1, aio_cb);
117 req->type = REQ_QUIT;
118 144
119 send_req (req); 145 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120} 146 croak ("object of class " AIO_REQ_KLASS " expected");
121 147
122static void 148 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback)
126{
127 aio_req req;
128 STRLEN svlen;
129 char *svptr = SvPV (data, svlen);
130 149
131 SvUPGRADE (data, SVt_PV); 150 return mg ? (aio_req)mg->mg_ptr : 0;
132 SvPOK_on (data); 151}
133 152
134 if (dataoffset < 0) 153static void aio_grp_feed (aio_req grp)
135 dataoffset += svlen; 154{
136 155 if (grp->sv2 && SvOK (grp->sv2))
137 if (dataoffset < 0 || dataoffset > svlen)
138 croak ("data offset outside of string");
139
140 if (dowrite)
141 { 156 {
142 /* write: check length and adjust. */ 157 dSP;
143 if (length < 0 || length + dataoffset > svlen) 158
144 length = svlen - dataoffset; 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;
145 } 168 }
146 else 169}
170
171static void req_submit (eio_req *req)
172{
173 eio_submit (req);
174
175 if (on_next_submit)
147 { 176 {
148 /* read: grow scalar as necessary */ 177 dSP;
149 svptr = SvGROW (data, length + dataoffset); 178 SV *cb = sv_2mortal (on_next_submit);
179
180 on_next_submit = 0;
181
182 PUSHMARK (SP);
183 PUTBACK;
184 call_sv (cb, G_DISCARD | G_EVAL);
150 } 185 }
151
152 if (length < 0)
153 croak ("length must not be negative");
154
155 Newz (0, req, 1, aio_cb);
156
157 if (!req)
158 croak ("out of memory during aio_req allocation");
159
160 req->type = dowrite ? REQ_WRITE : REQ_READ;
161 req->fd = fd;
162 req->offset = offset;
163 req->length = length;
164 req->data = SvREFCNT_inc (data);
165 req->dataptr = (char *)svptr + dataoffset;
166 req->callback = SvREFCNT_inc (callback);
167
168 send_req (req);
169} 186}
170 187
171static void 188static int req_invoke (eio_req *req)
172poll_wait ()
173{
174 if (!nreqs)
175 return;
176
177 fd_set rfd;
178 FD_ZERO(&rfd);
179 FD_SET(respipe [0], &rfd);
180
181 select (respipe [0] + 1, &rfd, 0, 0, 0);
182}
183
184static int
185poll_cb (pTHX)
186{ 189{
187 dSP; 190 dSP;
188 int count = 0;
189 aio_req req;
190
191 {
192 /* read and signals sent by the worker threads */
193 char buf [32];
194 while (read (respipe [0], buf, 32) > 0)
195 ;
196 }
197 191
198 for (;;) 192 if (req->flags & FLAG_SV2_RO_OFF)
193 SvREADONLY_off (req->sv2);
194
195 if (!EIO_CANCELLED (req) && SvOK (req->callback))
199 { 196 {
200 pthread_mutex_lock (&reslock); 197 ENTER;
198 SAVETMPS;
199 PUSHMARK (SP);
200 EXTEND (SP, 1);
201 201
202 req = ress; 202 switch (req->type)
203
204 if (ress)
205 { 203 {
206 ress = ress->next; 204 case EIO_READDIR:
207 if (!ress) rese = 0;
208 }
209
210 pthread_mutex_unlock (&reslock);
211
212 if (!req)
213 break;
214
215 nreqs--;
216
217 if (req->type == REQ_QUIT)
218 started--;
219 else
220 {
221 int errorno = errno;
222 errno = req->errorno;
223
224 if (req->type == REQ_READ)
225 SvCUR_set (req->data, req->dataoffset
226 + req->result > 0 ? req->result : 0);
227
228 if (req->data)
229 SvREFCNT_dec (req->data);
230
231 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
232 { 205 {
233 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 206 SV *rv = &PL_sv_undef;
234 PL_laststatval = req->result;
235 PL_statcache = *(req->statdata);
236 207
237 Safefree (req->statdata); 208 if (req->result >= 0)
209 {
210 int i;
211 char *buf = req->ptr2;
212 AV *av = newAV ();
213
214 av_extend (av, req->result - 1);
215
216 for (i = 0; i < req->result; ++i)
217 {
218 SV *sv = newSVpv (buf, 0);
219
220 av_store (av, i, sv);
221 buf += SvCUR (sv) + 1;
222 }
223
224 rv = sv_2mortal (newRV_noinc ((SV *)av));
225 }
226
227 PUSHs (rv);
238 } 228 }
229 break;
239 230
240 PUSHMARK (SP); 231 case EIO_OPEN:
241 XPUSHs (sv_2mortal (newSViv (req->result)));
242
243 if (req->type == REQ_OPEN)
244 { 232 {
245 /* convert fd to fh */ 233 /* convert fd to fh */
246 SV *fh; 234 SV *fh = &PL_sv_undef;
247 235
248 PUTBACK; 236 if (req->result >= 0)
249 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 237 {
250 SPAGAIN; 238 GV *gv = (GV *)sv_newmortal ();
239 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
240 char sym [64];
241 int symlen;
242
243 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
244 gv_init (gv, stash, sym, symlen, 0);
251 245
252 fh = POPs; 246 symlen = snprintf (
247 sym,
248 sizeof (sym),
249 "%s&=%d",
250 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
251 req->result
252 );
253 253
254 PUSHMARK (SP); 254 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
255 fh = (SV *)gv;
256 }
257
255 XPUSHs (fh); 258 PUSHs (fh);
256 } 259 }
257
258 PUTBACK;
259 call_sv (req->callback, G_VOID | G_EVAL);
260 SPAGAIN;
261
262 if (req->callback)
263 SvREFCNT_dec (req->callback);
264
265 errno = errorno;
266 count++;
267 }
268
269 Safefree (req);
270 }
271
272 return count;
273}
274
275static void *
276aio_proc (void *thr_arg)
277{
278 aio_req req;
279 int type;
280
281 do
282 {
283 pthread_mutex_lock (&reqlock);
284
285 for (;;)
286 {
287 req = reqs;
288
289 if (reqs)
290 {
291 reqs = reqs->next;
292 if (!reqs) reqe = 0;
293 }
294
295 if (req)
296 break; 260 break;
297 261
298 pthread_cond_wait (&reqwait, &reqlock); 262 case EIO_GROUP:
299 } 263 req->int1 = 2; /* mark group as finished */
300 264
301 pthread_mutex_unlock (&reqlock); 265 if (req->sv1)
302
303 errno = 0; /* strictly unnecessary */
304
305 type = req->type;
306
307 switch (type)
308 { 266 {
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 267 int i;
310 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 268 AV *av = (AV *)req->sv1;
311#if SYS_readahead
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif
316 269
317 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 270 EXTEND (SP, AvFILL (av) + 1);
318 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 271 for (i = 0; i <= AvFILL (av); ++i)
319 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 272 PUSHs (*av_fetch (av, i, 0));
320 273 }
321 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
322 case REQ_CLOSE: req->result = close (req->fd); break;
323 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
324
325 case REQ_FSYNC: req->result = fsync (req->fd); break;
326 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327
328 case REQ_QUIT:
329 break; 274 break;
330 275
276 case EIO_NOP:
277 case EIO_BUSY:
278 break;
279
280 case EIO_READLINK:
281 if (req->result > 0)
282 {
283 SvCUR_set (req->sv2, req->result);
284 *SvEND (req->sv2) = 0;
285 PUSHs (req->sv2);
286 }
287 break;
288
289 case EIO_STAT:
290 case EIO_LSTAT:
291 case EIO_FSTAT:
292 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
293 PL_laststatval = req->result;
294 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
295 PUSHs (sv_2mortal (newSViv (req->result)));
296 break;
297
298 case EIO_READ:
299 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
300 *SvEND (req->sv2) = 0;
301 PUSHs (sv_2mortal (newSViv (req->result)));
302 break;
303
304 case EIO_DUP2:
305 if (req->result > 0)
306 req->result = 0;
307 /* FALLTHROUGH */
308
331 default: 309 default:
332 req->result = ENOSYS; 310 PUSHs (sv_2mortal (newSViv (req->result)));
333 break; 311 break;
334 } 312 }
335 313
336 req->errorno = errno; 314 errno = req->errorno;
337 315
338 pthread_mutex_lock (&reslock); 316 PUTBACK;
317 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
318 SPAGAIN;
339 319
340 req->next = 0; 320 FREETMPS;
321 LEAVE;
341 322
342 if (rese) 323 PUTBACK;
343 {
344 rese->next = req;
345 rese = req;
346 }
347 else
348 {
349 rese = ress = req;
350
351 /* write a dummy byte to the pipe so fh becomes ready */
352 write (respipe [1], &respipe, 1);
353 }
354
355 pthread_mutex_unlock (&reslock);
356 } 324 }
357 while (type != REQ_QUIT);
358 325
326 return !!SvTRUE (ERRSV);
327}
328
329static void req_destroy (aio_req req)
330{
331 if (req->self)
332 {
333 sv_unmagic (req->self, PERL_MAGIC_ext);
334 SvREFCNT_dec (req->self);
335 }
336
337 SvREFCNT_dec (req->sv1);
338 SvREFCNT_dec (req->sv2);
339 SvREFCNT_dec (req->callback);
340
341 Safefree (req);
342}
343
344static void req_cancel_subs (aio_req grp)
345{
346 aio_req sub;
347
348 if (grp->type != EIO_GROUP)
349 return;
350
351 SvREFCNT_dec (grp->sv2);
352 grp->sv2 = 0;
353
354 eio_grp_cancel (grp);
355}
356
357#ifdef USE_SOCKETS_AS_HANDLES
358# define TO_SOCKET(x) (win32_get_osfhandle (x))
359#else
360# define TO_SOCKET(x) (x)
361#endif
362
363static void
364create_respipe (void)
365{
366 int old_readfd = respipe [0];
367
368 if (respipe [1] >= 0)
369 respipe_close (TO_SOCKET (respipe [1]));
370
371#ifdef _WIN32
372 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
373#else
374 if (pipe (respipe))
375#endif
376 croak ("unable to initialize result pipe");
377
378 if (old_readfd >= 0)
379 {
380 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
381 croak ("unable to initialize result pipe(2)");
382
383 respipe_close (respipe [0]);
384 respipe [0] = old_readfd;
385 }
386
387#ifdef _WIN32
388 int arg = 1;
389 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
390 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
391#else
392 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
393 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
394#endif
395 croak ("unable to initialize result pipe(3)");
396
397 respipe_osf [0] = TO_SOCKET (respipe [0]);
398 respipe_osf [1] = TO_SOCKET (respipe [1]);
399}
400
401static void poll_wait (void)
402{
403 fd_set rfd;
404
405 while (eio_nreqs ())
406 {
407 int size;
408
409 X_LOCK (reslock);
410 size = res_queue.size;
411 X_UNLOCK (reslock);
412
413 if (size)
414 return;
415
416 maybe_start_thread ();
417
418 FD_ZERO (&rfd);
419 FD_SET (respipe [0], &rfd);
420
421 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
422 }
423}
424
425static int poll_cb (void)
426{
427 int res;
428
429 do
430 {
431 res = eio_poll ();
432
433 if (res > 0)
434 croak (0);
435 }
436 while (max_outstanding && max_outstanding <= eio_nreqs ());
437
359 return 0; 438 return res;
360} 439}
361 440
441static void atfork_child (void)
442{
443 create_respipe ();
444}
445
446#define dREQ \
447 aio_req req; \
448 int req_pri = next_pri; \
449 next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
450 \
451 if (SvOK (callback) && !SvROK (callback)) \
452 croak ("callback must be undef or of reference type"); \
453 \
454 Newz (0, req, 1, eio_req); \
455 if (!req) \
456 croak ("out of memory during eio_req allocation"); \
457 \
458 req->callback = newSVsv (callback); \
459 req->pri = req_pri
460
461#define REQ_SEND \
462 req_submit (req); \
463 \
464 if (GIMME_V != G_VOID) \
465 XPUSHs (req_sv (req, AIO_REQ_KLASS));
466
362MODULE = IO::AIO PACKAGE = IO::AIO 467MODULE = IO::AIO PACKAGE = IO::AIO
363 468
469PROTOTYPES: ENABLE
470
364BOOT: 471BOOT:
365{ 472{
366 if (pipe (respipe)) 473 stash = gv_stashpv ("IO::AIO", 1);
367 croak ("unable to initialize result pipe");
368 474
369 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 475 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
370 croak ("cannot set result pipe to nonblocking mode"); 476 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
477 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
478 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
479 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
480#ifdef _WIN32
481 X_MUTEX_CHECK (wrklock);
482 X_MUTEX_CHECK (reslock);
483 X_MUTEX_CHECK (reqlock);
484 X_MUTEX_CHECK (reqwait);
485 X_MUTEX_CHECK (preadwritelock);
486 X_MUTEX_CHECK (readdirlock);
371 487
372 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 488 X_COND_CHECK (reqwait);
373 croak ("cannot set result pipe to nonblocking mode"); 489#else
374} 490 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
491#endif
375 492
493 create_respipe ();
494
495 if (eio_init (want_poll, done_poll) < 0)
496 croak ("IO::AIO: unable to initialise eio library");
497
498 /* atfork child called in fifo order, so before eio's handler */
499 X_THREAD_ATFORK (0, 0, atfork_child);
500}
501
376void 502void
377min_parallel(nthreads) 503max_poll_reqs (int nreqs)
378 int nthreads
379 PROTOTYPE: $ 504 PROTOTYPE: $
380 CODE: 505 CODE:
381 while (nthreads > started) 506 eio_set_max_poll_reqs (nreqs);
382 start_thread ();
383 507
384void 508void
385max_parallel(nthreads) 509max_poll_time (double nseconds)
386 int nthreads
387 PROTOTYPE: $ 510 PROTOTYPE: $
388 CODE: 511 CODE:
512 eio_set_max_poll_time (nseconds);
513
514void
515min_parallel (int nthreads)
516 PROTOTYPE: $
517 CODE:
518 eio_set_min_parallel (nthreads);
519
520void
521max_parallel (int nthreads)
522 PROTOTYPE: $
523 CODE:
524 eio_set_max_parallel (nthreads);
525
526void
527max_idle (int nthreads)
528 PROTOTYPE: $
529 CODE:
530 eio_set_max_idle (nthreads);
531
532void
533max_outstanding (int maxreqs)
534 PROTOTYPE: $
535 CODE:
536 max_outstanding = maxreqs;
537
538void
539aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
540 PROTOTYPE: $$$;$
541 PPCODE:
389{ 542{
390 int cur = started; 543 dREQ;
391 while (cur > nthreads) 544
392 { 545 req->type = EIO_OPEN;
393 end_thread (); 546 req->sv1 = newSVsv (pathname);
547 req->ptr1 = SvPVbyte_nolen (req->sv1);
548 req->int1 = flags;
549 req->int2 = mode;
550
551 REQ_SEND;
552}
553
554void
555aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
556 PROTOTYPE: $;$
557 ALIAS:
558 aio_fsync = EIO_FSYNC
559 aio_fdatasync = EIO_FDATASYNC
560 PPCODE:
561{
562 dREQ;
563
564 req->type = ix;
565 req->sv1 = newSVsv (fh);
566 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
567
568 REQ_SEND (req);
569}
570
571void
572aio_close (SV *fh, SV *callback=&PL_sv_undef)
573 PROTOTYPE: $;$
574 PPCODE:
575{
576 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
577 dREQ;
578
579 if (close_pipe < 0)
580 {
581 int pipefd [2];
582
583 if (pipe (pipefd) < 0
584 || close (pipefd [1]) < 0
585 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
586 abort (); /*D*/
587
588 close_pipe = pipefd [0];
589 }
590
591 req->type = EIO_DUP2;
592 req->int1 = close_pipe;
593 req->sv2 = newSVsv (fh);
594 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
595
596 REQ_SEND (req);
597}
598
599void
600aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
601 ALIAS:
602 aio_read = EIO_READ
603 aio_write = EIO_WRITE
604 PROTOTYPE: $$$$$;$
605 PPCODE:
606{
607 STRLEN svlen;
608 char *svptr = SvPVbyte (data, svlen);
609 UV len = SvUV (length);
610
611 SvUPGRADE (data, SVt_PV);
612 SvPOK_on (data);
613
614 if (dataoffset < 0)
615 dataoffset += svlen;
616
617 if (dataoffset < 0 || dataoffset > svlen)
618 croak ("dataoffset outside of data scalar");
619
620 if (ix == EIO_WRITE)
621 {
622 /* write: check length and adjust. */
623 if (!SvOK (length) || len + dataoffset > svlen)
624 len = svlen - dataoffset;
625 }
626 else
627 {
628 /* read: grow scalar as necessary */
629 svptr = SvGROW (data, len + dataoffset + 1);
630 }
631
632 if (len < 0)
633 croak ("length must not be negative");
634
635 {
636 dREQ;
637
638 req->type = ix;
639 req->sv1 = newSVsv (fh);
640 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
641 : IoOFP (sv_2io (fh)));
642 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
643 req->size = len;
644 req->sv2 = SvREFCNT_inc (data);
645 req->ptr2 = (char *)svptr + dataoffset;
646 req->stroffset = dataoffset;
647
648 if (!SvREADONLY (data))
394 cur--; 649 {
650 SvREADONLY_on (data);
651 req->flags |= FLAG_SV2_RO_OFF;
395 } 652 }
396 653
397 while (started > nthreads) 654 REQ_SEND;
655 }
656}
657
658void
659aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
660 PROTOTYPE: $$;$
661 PPCODE:
662{
663 SV *data;
664 dREQ;
665
666 data = newSV (NAME_MAX);
667 SvPOK_on (data);
668
669 req->type = EIO_READLINK;
670 req->sv1 = newSVsv (path);
671 req->ptr1 = SvPVbyte_nolen (req->sv1);
672 req->sv2 = data;
673 req->ptr2 = SvPVbyte_nolen (data);
674
675 REQ_SEND;
676}
677
678void
679aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
680 PROTOTYPE: $$$$;$
681 PPCODE:
682{
683 dREQ;
684
685 req->type = EIO_SENDFILE;
686 req->sv1 = newSVsv (out_fh);
687 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
688 req->sv2 = newSVsv (in_fh);
689 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
690 req->offs = SvVAL64 (in_offset);
691 req->size = length;
692
693 REQ_SEND;
694}
695
696void
697aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
698 PROTOTYPE: $$$;$
699 PPCODE:
700{
701 dREQ;
702
703 req->type = EIO_READAHEAD;
704 req->sv1 = newSVsv (fh);
705 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
706 req->offs = SvVAL64 (offset);
707 req->size = length;
708
709 REQ_SEND;
710}
711
712void
713aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
714 ALIAS:
715 aio_stat = EIO_STAT
716 aio_lstat = EIO_LSTAT
717 PPCODE:
718{
719 dREQ;
720
721 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
722 if (!req->ptr2)
723 {
724 req_destroy (req);
725 croak ("out of memory during aio_stat statdata allocation");
726 }
727
728 req->flags |= EIO_FLAG_PTR2_FREE;
729 req->sv1 = newSVsv (fh_or_path);
730
731 if (SvPOK (fh_or_path))
732 {
733 req->type = ix;
734 req->ptr1 = SvPVbyte_nolen (req->sv1);
735 }
736 else
737 {
738 req->type = EIO_FSTAT;
739 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
740 }
741
742 REQ_SEND;
743}
744
745void
746aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
747 PPCODE:
748{
749 dREQ;
750
751 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
752 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
753 req->sv1 = newSVsv (fh_or_path);
754
755 if (SvPOK (fh_or_path))
756 {
757 req->type = EIO_UTIME;
758 req->ptr1 = SvPVbyte_nolen (req->sv1);
759 }
760 else
761 {
762 req->type = EIO_FUTIME;
763 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
764 }
765
766 REQ_SEND;
767}
768
769void
770aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
771 PPCODE:
772{
773 dREQ;
774
775 req->sv1 = newSVsv (fh_or_path);
776 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
777
778 if (SvPOK (fh_or_path))
779 {
780 req->type = EIO_TRUNCATE;
781 req->ptr1 = SvPVbyte_nolen (req->sv1);
782 }
783 else
784 {
785 req->type = EIO_FTRUNCATE;
786 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
787 }
788
789 REQ_SEND;
790}
791
792void
793aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
794 ALIAS:
795 aio_chmod = EIO_CHMOD
796 aio_fchmod = EIO_FCHMOD
797 aio_mkdir = EIO_MKDIR
798 PPCODE:
799{
800 dREQ;
801
802 req->type = ix;
803 req->int2 = mode;
804 req->sv1 = newSVsv (fh_or_path);
805
806 if (ix == EIO_FCHMOD)
807 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
808 else
809 req->ptr1 = SvPVbyte_nolen (req->sv1);
810
811 REQ_SEND;
812}
813
814void
815aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
816 PPCODE:
817{
818 dREQ;
819
820 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
821 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
822 req->sv1 = newSVsv (fh_or_path);
823
824 if (SvPOK (fh_or_path))
825 {
826 req->type = EIO_CHOWN;
827 req->ptr1 = SvPVbyte_nolen (req->sv1);
828 }
829 else
830 {
831 req->type = EIO_FCHOWN;
832 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
833 }
834
835 REQ_SEND;
836}
837
838void
839aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
840 ALIAS:
841 aio_unlink = EIO_UNLINK
842 aio_rmdir = EIO_RMDIR
843 aio_readdir = EIO_READDIR
844 PPCODE:
845{
846 dREQ;
847
848 req->type = ix;
849 req->sv1 = newSVsv (pathname);
850 req->ptr1 = SvPVbyte_nolen (req->sv1);
851
852 REQ_SEND;
853}
854
855void
856aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
857 ALIAS:
858 aio_link = EIO_LINK
859 aio_symlink = EIO_SYMLINK
860 aio_rename = EIO_RENAME
861 PPCODE:
862{
863 dREQ;
864
865 req->type = ix;
866 req->sv1 = newSVsv (oldpath);
867 req->ptr1 = SvPVbyte_nolen (req->sv1);
868 req->sv2 = newSVsv (newpath);
869 req->ptr2 = SvPVbyte_nolen (req->sv2);
870
871 REQ_SEND;
872}
873
874void
875aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
876 PPCODE:
877{
878 dREQ;
879
880 req->type = EIO_MKNOD;
881 req->sv1 = newSVsv (pathname);
882 req->ptr1 = SvPVbyte_nolen (req->sv1);
883 req->int2 = (mode_t)mode;
884 req->offs = dev;
885
886 REQ_SEND;
887}
888
889void
890aio_busy (double delay, SV *callback=&PL_sv_undef)
891 PPCODE:
892{
893 dREQ;
894
895 req->type = EIO_BUSY;
896 req->nv1 = delay < 0. ? 0. : delay;
897
898 REQ_SEND;
899}
900
901void
902aio_group (SV *callback=&PL_sv_undef)
903 PROTOTYPE: ;$
904 PPCODE:
905{
906 dREQ;
907
908 req->type = EIO_GROUP;
909
910 eio_submit (req);
911 XPUSHs (req_sv (req, AIO_GRP_KLASS));
912}
913
914void
915aio_nop (SV *callback=&PL_sv_undef)
916 ALIAS:
917 aio_nop = EIO_NOP
918 aio_sync = EIO_SYNC
919 PPCODE:
920{
921 dREQ;
922
923 req->type = ix;
924
925 REQ_SEND;
926}
927
928int
929aioreq_pri (int pri = 0)
930 PROTOTYPE: ;$
931 CODE:
932 RETVAL = next_pri - EIO_PRI_BIAS;
933 if (items > 0)
934 {
935 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
936 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
937 next_pri = pri + EIO_PRI_BIAS;
938 }
939 OUTPUT:
940 RETVAL
941
942void
943aioreq_nice (int nice = 0)
944 CODE:
945 nice = next_pri - nice;
946 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
947 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
948 next_pri = nice + EIO_PRI_BIAS;
949
950void
951flush ()
952 PROTOTYPE:
953 CODE:
954 while (eio_nreqs ())
398 { 955 {
399 poll_wait (); 956 poll_wait ();
400 poll_cb (aTHX); 957 poll_cb ();
401 }
402}
403
404void
405aio_open(pathname,flags,mode,callback)
406 SV * pathname
407 int flags
408 int mode
409 SV * callback
410 PROTOTYPE: $$$$
411 CODE:
412{
413 aio_req req;
414
415 Newz (0, req, 1, aio_cb);
416
417 if (!req)
418 croak ("out of memory during aio_req allocation");
419
420 req->type = REQ_OPEN;
421 req->data = newSVsv (pathname);
422 req->dataptr = SvPV_nolen (req->data);
423 req->fd = flags;
424 req->mode = mode;
425 req->callback = SvREFCNT_inc (callback);
426
427 send_req (req);
428}
429
430void
431aio_close(fh,callback)
432 InputStream fh
433 SV * callback
434 PROTOTYPE: $$
435 ALIAS:
436 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC
439 CODE:
440{
441 aio_req req;
442
443 Newz (0, req, 1, aio_cb);
444
445 if (!req)
446 croak ("out of memory during aio_req allocation");
447
448 req->type = ix;
449 req->fd = PerlIO_fileno (fh);
450 req->callback = SvREFCNT_inc (callback);
451
452 send_req (req);
453}
454
455void
456aio_read(fh,offset,length,data,dataoffset,callback)
457 InputStream fh
458 UV offset
459 IV length
460 SV * data
461 IV dataoffset
462 SV * callback
463 PROTOTYPE: $$$$$$
464 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467void
468aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh
470 UV offset
471 IV length
472 SV * data
473 IV dataoffset
474 SV * callback
475 PROTOTYPE: $$$$$$
476 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479void
480aio_readahead(fh,offset,length,callback)
481 InputStream fh
482 UV offset
483 IV length
484 SV * callback
485 PROTOTYPE: $$$$
486 CODE:
487{
488 aio_req req;
489
490 if (length < 0)
491 croak ("length must not be negative");
492
493 Newz (0, req, 1, aio_cb);
494
495 if (!req)
496 croak ("out of memory during aio_req allocation");
497
498 req->type = REQ_READAHEAD;
499 req->fd = PerlIO_fileno (fh);
500 req->offset = offset;
501 req->length = length;
502 req->callback = SvREFCNT_inc (callback);
503
504 send_req (req);
505}
506
507void
508aio_stat(fh_or_path,callback)
509 SV * fh_or_path
510 SV * callback
511 PROTOTYPE: $$
512 ALIAS:
513 aio_lstat = 1
514 CODE:
515{
516 aio_req req;
517
518 Newz (0, req, 1, aio_cb);
519
520 if (!req)
521 croak ("out of memory during aio_req allocation");
522
523 New (0, req->statdata, 1, Stat_t);
524
525 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation");
527
528 if (SvPOK (fh_or_path))
529 { 958 }
530 req->type = ix ? REQ_LSTAT : REQ_STAT;
531 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data);
533 }
534 else
535 {
536 req->type = REQ_FSTAT;
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538 }
539 959
540 req->callback = SvREFCNT_inc (callback); 960int
541 961poll()
542 send_req (req);
543}
544
545void
546aio_unlink(pathname,callback)
547 SV * pathname
548 SV * callback
549 PROTOTYPE: $$ 962 PROTOTYPE:
550 CODE: 963 CODE:
551{ 964 poll_wait ();
552 aio_req req; 965 RETVAL = poll_cb ();
553 966 OUTPUT:
554 Newz (0, req, 1, aio_cb); 967 RETVAL
555
556 if (!req)
557 croak ("out of memory during aio_req allocation");
558
559 req->type = REQ_UNLINK;
560 req->data = newSVsv (pathname);
561 req->dataptr = SvPV_nolen (req->data);
562 req->callback = SvREFCNT_inc (callback);
563
564 send_req (req);
565}
566 968
567int 969int
568poll_fileno() 970poll_fileno()
569 PROTOTYPE: 971 PROTOTYPE:
570 CODE: 972 CODE:
… …
574 976
575int 977int
576poll_cb(...) 978poll_cb(...)
577 PROTOTYPE: 979 PROTOTYPE:
578 CODE: 980 CODE:
579 RETVAL = poll_cb (aTHX); 981 RETVAL = poll_cb ();
580 OUTPUT: 982 OUTPUT:
581 RETVAL 983 RETVAL
582 984
583void 985void
584poll_wait() 986poll_wait()
585 PROTOTYPE: 987 PROTOTYPE:
586 CODE: 988 CODE:
587 if (nreqs)
588 poll_wait (); 989 poll_wait ();
589 990
590int 991int
591nreqs() 992nreqs()
592 PROTOTYPE: 993 PROTOTYPE:
593 CODE: 994 CODE:
594 RETVAL = nreqs; 995 RETVAL = eio_nreqs ();
595 OUTPUT: 996 OUTPUT:
596 RETVAL 997 RETVAL
597 998
999int
1000nready()
1001 PROTOTYPE:
1002 CODE:
1003 RETVAL = eio_nready ();
1004 OUTPUT:
1005 RETVAL
1006
1007int
1008npending()
1009 PROTOTYPE:
1010 CODE:
1011 RETVAL = eio_npending ();
1012 OUTPUT:
1013 RETVAL
1014
1015int
1016nthreads()
1017 PROTOTYPE:
1018 CODE:
1019 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1020 RETVAL = started;
1021 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1022 OUTPUT:
1023 RETVAL
1024
1025void _on_next_submit (SV *cb)
1026 CODE:
1027 SvREFCNT_dec (on_next_submit);
1028 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1029
1030PROTOTYPES: DISABLE
1031
1032MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1033
1034void
1035cancel (aio_req_ornot req)
1036 CODE:
1037 eio_cancel (req);
1038
1039void
1040cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1041 CODE:
1042 SvREFCNT_dec (req->callback);
1043 req->callback = newSVsv (callback);
1044
1045MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1046
1047void
1048add (aio_req grp, ...)
1049 PPCODE:
1050{
1051 int i;
1052
1053 if (grp->int1 == 2)
1054 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1055
1056 for (i = 1; i < items; ++i )
1057 {
1058 aio_req req;
1059
1060 if (GIMME_V != G_VOID)
1061 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1062
1063 req = SvAIO_REQ (ST (i));
1064
1065 if (req)
1066 eio_grp_add (grp, req);
1067 }
1068}
1069
1070void
1071cancel_subs (aio_req_ornot req)
1072 CODE:
1073 req_cancel_subs (req);
1074
1075void
1076result (aio_req grp, ...)
1077 CODE:
1078{
1079 int i;
1080 AV *av;
1081
1082 grp->errorno = errno;
1083
1084 av = newAV ();
1085
1086 for (i = 1; i < items; ++i )
1087 av_push (av, newSVsv (ST (i)));
1088
1089 SvREFCNT_dec (grp->sv1);
1090 grp->sv1 = (SV *)av;
1091}
1092
1093void
1094errno (aio_req grp, int errorno = errno)
1095 CODE:
1096 grp->errorno = errorno;
1097
1098void
1099limit (aio_req grp, int limit)
1100 CODE:
1101 eio_grp_limit (grp, limit);
1102
1103void
1104feed (aio_req grp, SV *callback=&PL_sv_undef)
1105 CODE:
1106{
1107 SvREFCNT_dec (grp->sv2);
1108 grp->sv2 = newSVsv (callback);
1109
1110 if (grp->int2 <= 0)
1111 grp->int2 = 2;
1112
1113 eio_grp_limit (grp, grp->int2);
1114}
1115

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