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/cvs/IO-AIO/AIO.xs
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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs.
Revision 1.165 by root, Sun May 9 20:42:55 2010 UTC

1#define _XOPEN_SOURCE 500 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 "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
7#include <sys/types.h> 14#include <sys/types.h>
8#include <sys/stat.h> 15#include <sys/stat.h>
9 16#include <sys/statvfs.h>
10#include <unistd.h> 17#include <limits.h>
11#include <fcntl.h> 18#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 19#include <sched.h>
14#if __linux 20
21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
15#include <sys/syscall.h> 22# include <sys/mman.h>
16#endif 23#endif
17 24
18#include <pthread.h> 25/* perl namespace pollution */
26#undef VERSION
19 27
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 28#ifdef _WIN32
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
23 29
24#if __ia64 30# define EIO_STRUCT_DIRENT Direntry_t
25# define STACKSIZE 65536 31# undef malloc
32# undef free
33
34// perl overrides all those nice win32 functions
35# undef open
36# undef read
37# undef write
38# undef send
39# undef recv
40# undef stat
41# undef fstat
42# define lstat stat
43# undef truncate
44# undef ftruncate
45# undef open
46# undef close
47# undef unlink
48# undef rmdir
49# undef rename
50# undef lseek
51
52# define chown(a,b,c) (errno = ENOSYS, -1)
53# define fchown(a,b,c) (errno = ENOSYS, -1)
54# define fchmod(a,b) (errno = ENOSYS, -1)
55# define symlink(a,b) (errno = ENOSYS, -1)
56# define readlink(a,b,c) (errno = ENOSYS, -1)
57# define mknod(a,b,c) (errno = ENOSYS, -1)
58# define truncate(a,b) (errno = ENOSYS, -1)
59# define ftruncate(fd,o) chsize ((fd), (o))
60# define fsync(fd) _commit (fd)
61# define opendir(fd) (errno = ENOSYS, 0)
62# define readdir(fd) (errno = ENOSYS, -1)
63# define closedir(fd) (errno = ENOSYS, -1)
64# define mkdir(a,b) mkdir (a)
65
26#else 66#else
27# define STACKSIZE 4096 67
68# include <sys/time.h>
69# include <sys/select.h>
70# include <unistd.h>
71# include <utime.h>
72# include <signal.h>
73# define EIO_STRUCT_DIRENT struct dirent
74
75#endif
76
77/* perl stupidly overrides readdir and maybe others */
78/* with thread-unsafe versions, imagine that :( */
79#undef readdir
80#undef opendir
81#undef closedir
82
83#define EIO_STRUCT_STAT Stat_t
84
85/* use NV for 32 bit perls as it allows larger offsets */
86#if IVSIZE >= 8
87# define VAL64 IV
88# define SvVAL64 SvIV
89# define newSVval64 newSViv
90#else
91# define VAL64 NV
92# define SvVAL64 SvNV
93# define newSVval64 newSVnv
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/eio.h"
124
125#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0
127# define NO_FADVISE 1
128#endif
129#ifndef POSIX_FADV_SEQUENTIAL
130# define POSIX_FADV_SEQUENTIAL 0
131#endif
132#ifndef POSIX_FADV_RANDOM
133# define POSIX_FADV_RANDOM 0
134#endif
135#ifndef POSIX_FADV_NOREUSE
136# define POSIX_FADV_NOREUSE 0
137#endif
138#ifndef POSIX_FADV_WILLNEED
139# define POSIX_FADV_WILLNEED 0
140#endif
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145#ifndef ST_NODEV
146# define ST_NODEV 0
147#endif
148#ifndef ST_NOEXEC
149# define ST_NOEXEC 0
150#endif
151#ifndef ST_SYNCHRONOUS
152# define ST_SYNCHRONOUS 0
153#endif
154#ifndef ST_MANDLOCK
155# define ST_MANDLOCK 0
156#endif
157#ifndef ST_WRITE
158# define ST_WRITE 0
159#endif
160#ifndef ST_APPEND
161# define ST_APPEND 0
162#endif
163#ifndef ST_IMMUTABLE
164# define ST_IMMUTABLE 0
165#endif
166#ifndef ST_NOATIME
167# define ST_NOATIME 0
168#endif
169#ifndef ST_NODIRATIME
170# define ST_NODIRATIME 0
171#endif
172#ifndef ST_RELATIME
173# define ST_RELATIME 0
174#endif
175
176#ifndef MCL_CURRENT
177# define MCL_CURRENT 0
178#endif
179#ifndef MCL_FUTURE
180# define MCL_FUTURE 0
181#endif
182
183#ifndef MAP_ANONYMOUS
184# ifdef MAP_ANON
185# define MAP_ANONYMOUS MAP_ANON
186# else
187# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 188# endif
189#endif
190#ifndef MAP_HUGETLB
191# define MAP_HUGETLB 0
192#endif
193#ifndef MAP_LOCKED
194# define MAP_LOCKED 0
195#endif
196#ifndef MAP_NORESERVE
197# define MAP_NORESERVE 0
198#endif
199#ifndef MAP_POPULATE
200# define MAP_POPULATE 0
201#endif
202#ifndef MAP_NONBLOCK
203# define MAP_NONBLOCK 0
204#endif
205
206#ifndef PAGESIZE
207# define PAGESIZE sysconf (_SC_PAGESIZE)
208#endif
209
210static int req_invoke (eio_req *req);
211#define EIO_FINISH(req) req_invoke (req)
212static void req_destroy (eio_req *grp);
213#define EIO_DESTROY(req) req_destroy (req)
29 214
30enum { 215enum {
31 REQ_QUIT, 216 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}; 217};
37 218
38typedef struct aio_cb { 219#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 220
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, *fh;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 221typedef eio_req *aio_req;
222typedef eio_req *aio_req_ornot;
57 223
58static int started; 224static SV *on_next_submit;
59static volatile int nreqs; 225static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 226static int max_outstanding;
61static int respipe [2];
62 227
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 228static s_epipe respipe;
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 229
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 230static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 231static void req_cancel (aio_req req);
69 232
70static void 233static void want_poll (void)
71poll_wait ()
72{ 234{
73 if (nreqs && !ress) 235 /* write a dummy byte to the pipe so fh becomes ready */
236 s_epipe_signal (&respipe);
237}
238
239static void done_poll (void)
240{
241 /* read any signals sent by the worker threads */
242 s_epipe_drain (&respipe);
243}
244
245/* must be called at most once */
246static SV *req_sv (aio_req req, HV *stash)
247{
248 if (!req->self)
74 { 249 {
75 fd_set rfd; 250 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 251 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 252 }
81}
82 253
83static int 254 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
84poll_cb () 255}
256
257static aio_req SvAIO_REQ (SV *sv)
258{
259 MAGIC *mg;
260
261 if (!SvROK (sv)
262 || (SvSTASH (SvRV (sv)) != aio_grp_stash
263 && SvSTASH (SvRV (sv)) != aio_req_stash
264 && !sv_derived_from (sv, "IO::AIO::REQ")))
265 croak ("object of class IO::AIO::REQ expected");
266
267 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
268
269 return mg ? (aio_req)mg->mg_ptr : 0;
270}
271
272static void aio_grp_feed (aio_req grp)
273{
274 if (grp->sv2 && SvOK (grp->sv2))
275 {
276 dSP;
277
278 ENTER;
279 SAVETMPS;
280 PUSHMARK (SP);
281 XPUSHs (req_sv (grp, aio_grp_stash));
282 PUTBACK;
283 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
284 SPAGAIN;
285 FREETMPS;
286 LEAVE;
287 }
288}
289
290static void req_submit (eio_req *req)
291{
292 eio_submit (req);
293
294 if (expect_false (on_next_submit))
295 {
296 dSP;
297 SV *cb = sv_2mortal (on_next_submit);
298
299 on_next_submit = 0;
300
301 PUSHMARK (SP);
302 PUTBACK;
303 call_sv (cb, G_DISCARD | G_EVAL);
304 }
305}
306
307static int req_invoke (eio_req *req)
85{ 308{
86 dSP; 309 dSP;
87 int count = 0;
88 aio_req req, prv;
89 310
90 pthread_mutex_lock (&reslock); 311 if (req->flags & FLAG_SV2_RO_OFF)
312 SvREADONLY_off (req->sv2);
91 313
92 { 314 if (!EIO_CANCELLED (req) && req->callback)
93 /* read any signals sent by the worker threads */
94 char buf [32];
95 while (read (respipe [0], buf, 32) > 0)
96 ;
97 }
98
99 req = ress;
100 ress = rese = 0;
101
102 pthread_mutex_unlock (&reslock);
103
104 while (req)
105 { 315 {
106 nreqs--; 316 static SV *sv_result_cache; /* caches the result integer SV */
317 SV *sv_result;
107 318
108 if (req->type == REQ_QUIT) 319 ENTER;
109 started--; 320 SAVETMPS;
110 else 321 PUSHMARK (SP);
322 EXTEND (SP, 1);
323
324 /* do not recreate the result IV from scratch each time */
325 if (expect_true (sv_result_cache))
111 { 326 {
112 int errorno = errno; 327 sv_result = sv_result_cache; sv_result_cache = 0;
113 errno = req->errorno; 328 SvIV_set (sv_result, req->result);
114
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->fh)
123 SvREFCNT_dec (req->fh);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 ENTER;
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = SvREFCNT_inc (POPs);
148
149 PUSHMARK (SP);
150 XPUSHs (sv_2mortal (fh));
151 }
152
153 if (SvOK (req->callback))
154 {
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158 }
159
160 LEAVE;
161
162 if (req->callback)
163 SvREFCNT_dec (req->callback);
164
165 errno = errorno;
166 count++;
167 }
168
169 prv = req;
170 req = req->next;
171 Safefree (prv);
172
173 /* TODO: croak on errors? */
174 }
175
176 return count;
177}
178
179static void *aio_proc(void *arg);
180
181static void
182start_thread (void)
183{
184 sigset_t fullsigset, oldsigset;
185 pthread_t tid;
186 pthread_attr_t attr;
187
188 pthread_attr_init (&attr);
189 pthread_attr_setstacksize (&attr, STACKSIZE);
190 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
191
192 sigfillset (&fullsigset);
193 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
194
195 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
196 started++;
197
198 sigprocmask (SIG_SETMASK, &oldsigset, 0);
199}
200
201static void
202send_req (aio_req req)
203{
204 nreqs++;
205
206 pthread_mutex_lock (&reqlock);
207
208 req->next = 0;
209
210 if (reqe)
211 {
212 reqe->next = req;
213 reqe = req;
214 }
215 else
216 reqe = reqs = req;
217
218 pthread_cond_signal (&reqwait);
219 pthread_mutex_unlock (&reqlock);
220
221 while (nreqs > max_outstanding)
222 {
223 poll_wait ();
224 poll_cb ();
225 }
226}
227
228static void
229end_thread (void)
230{
231 aio_req req;
232 New (0, req, 1, aio_cb);
233 req->type = REQ_QUIT;
234
235 send_req (req);
236}
237
238static void *
239aio_proc (void *thr_arg)
240{
241 aio_req req;
242 int type;
243
244 do
245 {
246 pthread_mutex_lock (&reqlock);
247
248 for (;;)
249 {
250 req = reqs;
251
252 if (reqs)
253 {
254 reqs = reqs->next;
255 if (!reqs) reqe = 0;
256 }
257
258 if (req)
259 break;
260
261 pthread_cond_wait (&reqwait, &reqlock);
262 }
263
264 pthread_mutex_unlock (&reqlock);
265
266 errno = 0; /* strictly unnecessary */
267
268 type = req->type;
269
270 switch (type)
271 {
272 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
273 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
274#if SYS_readahead
275 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
276#else
277 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
278#endif
279
280 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
281 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
282 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
283
284 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
285 case REQ_CLOSE: req->result = close (req->fd); break;
286 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
287
288 case REQ_FSYNC: req->result = fsync (req->fd); break;
289 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
290
291 case REQ_QUIT:
292 break;
293
294 default:
295 req->result = ENOSYS;
296 break;
297 }
298
299 req->errorno = errno;
300
301 pthread_mutex_lock (&reslock);
302
303 req->next = 0;
304
305 if (rese)
306 {
307 rese->next = req;
308 rese = req;
309 } 329 }
310 else 330 else
311 { 331 {
312 rese = ress = req; 332 sv_result = newSViv (req->result);
313 333 SvREADONLY_on (sv_result);
314 /* write a dummy byte to the pipe so fh becomes ready */
315 write (respipe [1], &respipe, 1);
316 } 334 }
317 335
318 pthread_mutex_unlock (&reslock); 336 switch (req->type)
337 {
338 case EIO_READDIR:
339 {
340 SV *rv = &PL_sv_undef;
341
342 if (req->result >= 0)
343 {
344 int i;
345 char *names = (char *)req->ptr2;
346 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
347 AV *av = newAV ();
348
349 av_extend (av, req->result - 1);
350
351 for (i = 0; i < req->result; ++i)
352 {
353 if (req->int1 & EIO_READDIR_DENTS)
354 {
355 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
356
357 if (req->int1 & EIO_READDIR_CUSTOM2)
358 {
359 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
360 AV *avent = newAV ();
361
362 av_extend (avent, 2);
363
364 if (!sv_type [ent->type])
365 {
366 sv_type [ent->type] = newSViv (ent->type);
367 SvREADONLY_on (sv_type [ent->type]);
368 }
369
370 av_store (avent, 0, namesv);
371 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
372 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
373
374 av_store (av, i, newRV_noinc ((SV *)avent));
375 }
376 else
377 av_store (av, i, namesv);
378
379 ++ent;
380 }
381 else
382 {
383 SV *name = newSVpv (names, 0);
384 av_store (av, i, name);
385 names += SvCUR (name) + 1;
386 }
387 }
388
389 rv = sv_2mortal (newRV_noinc ((SV *)av));
390 }
391
392 PUSHs (rv);
393
394 if (req->int1 & EIO_READDIR_CUSTOM1)
395 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
396 }
397 break;
398
399 case EIO_OPEN:
400 {
401 /* convert fd to fh */
402 SV *fh = &PL_sv_undef;
403
404 if (req->result >= 0)
405 {
406 GV *gv = (GV *)sv_newmortal ();
407 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
408 char sym [64];
409 int symlen;
410
411 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
412 gv_init (gv, aio_stash, sym, symlen, 0);
413
414 symlen = snprintf (
415 sym,
416 sizeof (sym),
417 "%s&=%d",
418 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
419 (int)req->result
420 );
421
422 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
423 fh = (SV *)gv;
424 }
425
426 PUSHs (fh);
427 }
428 break;
429
430 case EIO_STATVFS:
431 case EIO_FSTATVFS:
432 {
433 SV *rv = &PL_sv_undef;
434
435 if (req->result >= 0)
436 {
437 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
438 HV *hv = newHV ();
439
440 rv = sv_2mortal (newRV_noinc ((SV *)hv));
441
442 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
443 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
444 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
445 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
446 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
447 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
448 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
449 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
450 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
451 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
452 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
453 }
454
455 PUSHs (rv);
456 }
457
458 break;
459
460 case EIO_GROUP:
461 req->int1 = 2; /* mark group as finished */
462
463 if (req->sv1)
464 {
465 int i;
466 AV *av = (AV *)req->sv1;
467
468 EXTEND (SP, AvFILL (av) + 1);
469 for (i = 0; i <= AvFILL (av); ++i)
470 PUSHs (*av_fetch (av, i, 0));
471 }
472 break;
473
474 case EIO_NOP:
475 case EIO_BUSY:
476 break;
477
478 case EIO_READLINK:
479 if (req->result > 0)
480 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
481 break;
482
483 case EIO_STAT:
484 case EIO_LSTAT:
485 case EIO_FSTAT:
486 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
487 PL_laststatval = req->result;
488 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
489 PUSHs (sv_result);
490 break;
491
492 case EIO_READ:
493 {
494 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
495 *SvEND (req->sv2) = 0;
496 SvPOK_only (req->sv2);
497 SvSETMAGIC (req->sv2);
498 PUSHs (sv_result);
499 }
500 break;
501
502 case EIO_DUP2:
503 if (req->result > 0)
504 SvIV_set (sv_result, 0);
505 /* FALLTHROUGH */
506
507 default:
508 PUSHs (sv_result);
509 break;
510 }
511
512 errno = req->errorno;
513
514 PUTBACK;
515 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
516 SPAGAIN;
517
518 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
519 SvREFCNT_dec (sv_result);
520 else
521 sv_result_cache = sv_result;
522
523 FREETMPS;
524 LEAVE;
525
526 PUTBACK;
319 } 527 }
320 while (type != REQ_QUIT); 528
529 return !!SvTRUE (ERRSV);
530}
531
532static void req_destroy (aio_req req)
533{
534 if (req->self)
535 {
536 sv_unmagic (req->self, PERL_MAGIC_ext);
537 SvREFCNT_dec (req->self);
538 }
539
540 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2);
542 SvREFCNT_dec (req->callback);
543
544 Safefree (req);
545}
546
547static void req_cancel_subs (aio_req grp)
548{
549 aio_req sub;
550
551 if (grp->type != EIO_GROUP)
552 return;
553
554 SvREFCNT_dec (grp->sv2);
555 grp->sv2 = 0;
556
557 eio_grp_cancel (grp);
558}
559
560static void
561create_respipe (void)
562{
563 if (s_epipe_renew (&respipe))
564 croak ("IO::AIO: unable to initialize result pipe");
565}
566
567static void poll_wait (void)
568{
569 while (eio_nreqs ())
570 {
571 int size;
572
573 X_LOCK (reslock);
574 size = res_queue.size;
575 X_UNLOCK (reslock);
576
577 if (size)
578 return;
579
580 etp_maybe_start_thread ();
581
582 s_epipe_wait (&respipe);
583 }
584}
585
586static int poll_cb (void)
587{
588 for (;;)
589 {
590 int res = eio_poll ();
591
592 if (res > 0)
593 croak (0);
594
595 if (!max_outstanding || max_outstanding > eio_nreqs ())
596 return res;
597
598 poll_wait ();
599 }
600}
601
602static void atfork_child (void)
603{
604 create_respipe ();
605}
606
607/*****************************************************************************/
608
609#if !_POSIX_MAPPED_FILES
610# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
611# define munmap(addr,length) (errno = ENOSYS, -1)
612#endif
613
614#define MMAP_MAGIC PERL_MAGIC_ext
615
616static int
617mmap_free (pTHX_ SV *sv, MAGIC *mg)
618{
619 int old_errno = errno;
620 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
621 errno = old_errno;
622
623 mg->mg_obj = 0; /* just in case */
624
625 SvREADONLY_off (sv);
626 SvCUR_set (sv, 0);
627 SvLEN_set (sv, 0);
628 SvPVX (sv) = 0;
629 SvOK_off (sv);
321 630
322 return 0; 631 return 0;
323} 632}
324 633
634static MGVTBL mmap_vtbl = {
635 0, 0, 0, 0, mmap_free
636};
637
638/*****************************************************************************/
639
640static SV *
641get_cb (SV *cb_sv)
642{
643 SvGETMAGIC (cb_sv);
644 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
645}
646
647#define dREQ \
648 SV *cb_cv; \
649 aio_req req; \
650 int req_pri = next_pri; \
651 next_pri = EIO_PRI_DEFAULT; \
652 \
653 cb_cv = get_cb (callback); \
654 \
655 Newz (0, req, 1, eio_req); \
656 if (!req) \
657 croak ("out of memory during eio_req allocation"); \
658 \
659 req->callback = SvREFCNT_inc (cb_cv); \
660 req->pri = req_pri
661
662#define REQ_SEND \
663 PUTBACK; \
664 req_submit (req); \
665 SPAGAIN; \
666 \
667 if (GIMME_V != G_VOID) \
668 XPUSHs (req_sv (req, aio_req_stash));
669
325MODULE = IO::AIO PACKAGE = IO::AIO 670MODULE = IO::AIO PACKAGE = IO::AIO
326 671
327PROTOTYPES: ENABLE 672PROTOTYPES: ENABLE
328 673
329BOOT: 674BOOT:
330{ 675{
331 if (pipe (respipe)) 676 static const struct {
332 croak ("unable to initialize result pipe"); 677 const char *name;
678 IV iv;
679 } *civ, const_iv[] = {
680# define const_niv(name, value) { # name, (IV) value },
681# define const_iv(name) { # name, (IV) name },
682# define const_eio(name) { # name, (IV) EIO_ ## name },
683 const_iv (EXDEV)
684 const_iv (ENOSYS)
685 const_iv (O_RDONLY)
686 const_iv (O_WRONLY)
687 const_iv (O_RDWR)
688 const_iv (O_CREAT)
689 const_iv (O_TRUNC)
690 const_iv (O_EXCL)
691 const_iv (O_APPEND)
692#ifndef _WIN32
693 const_iv (S_IFIFO)
694#endif
695 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
696 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
697 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
698 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
699 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
700 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
333 701
334 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 702 const_iv (ST_RDONLY)
335 croak ("cannot set result pipe to nonblocking mode"); 703 const_iv (ST_NOSUID)
704 const_iv (ST_NODEV)
705 const_iv (ST_NOEXEC)
706 const_iv (ST_SYNCHRONOUS)
707 const_iv (ST_MANDLOCK)
708 const_iv (ST_WRITE)
709 const_iv (ST_APPEND)
710 const_iv (ST_IMMUTABLE)
711 const_iv (ST_NOATIME)
712 const_iv (ST_NODIRATIME)
713 const_iv (ST_RELATIME)
336 714
337 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 715 const_iv (PROT_EXEC)
338 croak ("cannot set result pipe to nonblocking mode"); 716 const_iv (PROT_NONE)
339} 717 const_iv (PROT_READ)
718 const_iv (PROT_WRITE)
340 719
720 /*const_iv (MAP_FIXED)*/
721 const_iv (MAP_PRIVATE)
722 const_iv (MAP_SHARED)
723 const_iv (MAP_ANONYMOUS)
724
725 /* linuxish */
726 const_iv (MAP_HUGETLB)
727 const_iv (MAP_LOCKED)
728 const_iv (MAP_NORESERVE)
729 const_iv (MAP_POPULATE)
730 const_iv (MAP_NONBLOCK)
731
732 const_iv (MCL_FUTURE)
733 const_iv (MCL_CURRENT)
734
735 const_eio (MS_ASYNC)
736 const_eio (MS_INVALIDATE)
737 const_eio (MS_SYNC)
738
739 const_eio (MT_MODIFY)
740
741 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
742 const_eio (SYNC_FILE_RANGE_WRITE)
743 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
744
745 const_eio (READDIR_DENTS)
746 const_eio (READDIR_DIRS_FIRST)
747 const_eio (READDIR_STAT_ORDER)
748 const_eio (READDIR_FOUND_UNKNOWN)
749
750 const_eio (DT_UNKNOWN)
751 const_eio (DT_FIFO)
752 const_eio (DT_CHR)
753 const_eio (DT_DIR)
754 const_eio (DT_BLK)
755 const_eio (DT_REG)
756 const_eio (DT_LNK)
757 const_eio (DT_SOCK)
758 const_eio (DT_WHT)
759 };
760
761 aio_stash = gv_stashpv ("IO::AIO" , 1);
762 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
763 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
764
765 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
766 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
767
768 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
769
770 create_respipe ();
771
772 if (eio_init (want_poll, done_poll) < 0)
773 croak ("IO::AIO: unable to initialise eio library");
774
775 /* atfork child called in fifo order, so before eio's handler */
776 X_THREAD_ATFORK (0, 0, atfork_child);
777}
778
341void 779void
342min_parallel(nthreads) 780max_poll_reqs (int nreqs)
343 int nthreads
344 PROTOTYPE: $ 781 PROTOTYPE: $
345 CODE: 782 CODE:
346 while (nthreads > started) 783 eio_set_max_poll_reqs (nreqs);
347 start_thread ();
348 784
349void 785void
350max_parallel(nthreads) 786max_poll_time (double nseconds)
351 int nthreads
352 PROTOTYPE: $ 787 PROTOTYPE: $
353 CODE: 788 CODE:
789 eio_set_max_poll_time (nseconds);
790
791void
792min_parallel (int nthreads)
793 PROTOTYPE: $
794 CODE:
795 eio_set_min_parallel (nthreads);
796
797void
798max_parallel (int nthreads)
799 PROTOTYPE: $
800 CODE:
801 eio_set_max_parallel (nthreads);
802
803void
804max_idle (int nthreads)
805 PROTOTYPE: $
806 CODE:
807 eio_set_max_idle (nthreads);
808
809void
810max_outstanding (int maxreqs)
811 PROTOTYPE: $
812 CODE:
813 max_outstanding = maxreqs;
814
815void
816aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
817 PROTOTYPE: $$$;$
818 PPCODE:
354{ 819{
355 int cur = started; 820 dREQ;
356 while (cur > nthreads) 821
357 { 822 req->type = EIO_OPEN;
358 end_thread (); 823 req->sv1 = newSVsv (pathname);
359 cur--; 824 req->ptr1 = SvPVbyte_nolen (req->sv1);
825 req->int1 = flags;
826 req->int2 = mode;
827
828 REQ_SEND;
829}
830
831void
832aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
833 PROTOTYPE: $;$
834 ALIAS:
835 aio_fsync = EIO_FSYNC
836 aio_fdatasync = EIO_FDATASYNC
837 PPCODE:
838{
839 int fd = s_fileno_croak (fh, 0);
840 dREQ;
841
842 req->type = ix;
843 req->sv1 = newSVsv (fh);
844 req->int1 = fd;
845
846 REQ_SEND (req);
847}
848
849void
850aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
851 PROTOTYPE: $$$$;$
852 PPCODE:
853{
854 int fd = s_fileno_croak (fh, 0);
855 dREQ;
856
857 req->type = EIO_SYNC_FILE_RANGE;
858 req->sv1 = newSVsv (fh);
859 req->int1 = fd;
860 req->offs = offset;
861 req->size = nbytes;
862 req->int2 = flags;
863
864 REQ_SEND (req);
865}
866
867void
868aio_close (SV *fh, SV *callback=&PL_sv_undef)
869 PROTOTYPE: $;$
870 PPCODE:
871{
872 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
873 int fd = s_fileno_croak (fh, 0);
874 dREQ;
875
876 if (close_pipe < 0)
877 {
878 int pipefd [2];
879
880 if (pipe (pipefd) < 0
881 || close (pipefd [1]) < 0
882 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
883 abort (); /*D*/
884
885 close_pipe = pipefd [0];
360 } 886 }
361 887
362 while (started > nthreads) 888 req->type = EIO_DUP2;
889 req->int1 = close_pipe;
890 req->sv2 = newSVsv (fh);
891 req->int2 = fd;
892
893 REQ_SEND (req);
894}
895
896void
897aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
898 ALIAS:
899 aio_read = EIO_READ
900 aio_write = EIO_WRITE
901 PROTOTYPE: $$$$$;$
902 PPCODE:
903{
904 STRLEN svlen;
905 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
906 char *svptr = SvPVbyte (data, svlen);
907 UV len = SvUV (length);
908
909 if (dataoffset < 0)
910 dataoffset += svlen;
911
912 if (dataoffset < 0 || dataoffset > svlen)
913 croak ("dataoffset outside of data scalar");
914
915 if (ix == EIO_WRITE)
916 {
917 /* write: check length and adjust. */
918 if (!SvOK (length) || len + dataoffset > svlen)
919 len = svlen - dataoffset;
920 }
921 else
922 {
923 /* read: check type and grow scalar as necessary */
924 SvUPGRADE (data, SVt_PV);
925 svptr = SvGROW (data, len + dataoffset + 1);
926 }
927
928 {
929 dREQ;
930
931 req->type = ix;
932 req->sv1 = newSVsv (fh);
933 req->int1 = fd;
934 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
935 req->size = len;
936 req->sv2 = SvREFCNT_inc (data);
937 req->ptr2 = (char *)svptr + dataoffset;
938 req->stroffset = dataoffset;
939
940 if (!SvREADONLY (data))
941 {
942 SvREADONLY_on (data);
943 req->flags |= FLAG_SV2_RO_OFF;
944 }
945
946 REQ_SEND;
947 }
948}
949
950void
951aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
952 PROTOTYPE: $$;$
953 PPCODE:
954{
955 SV *data;
956 dREQ;
957
958 req->type = EIO_READLINK;
959 req->sv1 = newSVsv (path);
960 req->ptr1 = SvPVbyte_nolen (req->sv1);
961
962 REQ_SEND;
963}
964
965void
966aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
967 PROTOTYPE: $$$$;$
968 PPCODE:
969{
970 int ifd = s_fileno_croak (in_fh , 0);
971 int ofd = s_fileno_croak (out_fh, 1);
972 dREQ;
973
974 req->type = EIO_SENDFILE;
975 req->sv1 = newSVsv (out_fh);
976 req->int1 = ofd;
977 req->sv2 = newSVsv (in_fh);
978 req->int2 = ifd;
979 req->offs = in_offset;
980 req->size = length;
981
982 REQ_SEND;
983}
984
985void
986aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
987 PROTOTYPE: $$$;$
988 PPCODE:
989{
990 int fd = s_fileno_croak (fh, 0);
991 dREQ;
992
993 req->type = EIO_READAHEAD;
994 req->sv1 = newSVsv (fh);
995 req->int1 = fd;
996 req->offs = offset;
997 req->size = length;
998
999 REQ_SEND;
1000}
1001
1002void
1003aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1004 ALIAS:
1005 aio_stat = EIO_STAT
1006 aio_lstat = EIO_LSTAT
1007 aio_statvfs = EIO_STATVFS
1008 PPCODE:
1009{
1010 dREQ;
1011
1012 req->sv1 = newSVsv (fh_or_path);
1013
1014 if (SvPOK (req->sv1))
1015 {
1016 req->type = ix;
1017 req->ptr1 = SvPVbyte_nolen (req->sv1);
1018 }
1019 else
1020 {
1021 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1022 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1023 }
1024
1025 REQ_SEND;
1026}
1027
1028void
1029aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1030 PPCODE:
1031{
1032 dREQ;
1033
1034 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1035 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1036 req->sv1 = newSVsv (fh_or_path);
1037
1038 if (SvPOK (req->sv1))
1039 {
1040 req->type = EIO_UTIME;
1041 req->ptr1 = SvPVbyte_nolen (req->sv1);
1042 }
1043 else
1044 {
1045 req->type = EIO_FUTIME;
1046 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1047 }
1048
1049 REQ_SEND;
1050}
1051
1052void
1053aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1054 PPCODE:
1055{
1056 dREQ;
1057
1058 req->sv1 = newSVsv (fh_or_path);
1059 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1060
1061 if (SvPOK (req->sv1))
1062 {
1063 req->type = EIO_TRUNCATE;
1064 req->ptr1 = SvPVbyte_nolen (req->sv1);
1065 }
1066 else
1067 {
1068 req->type = EIO_FTRUNCATE;
1069 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1070 }
1071
1072 REQ_SEND;
1073}
1074
1075void
1076aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1077 ALIAS:
1078 aio_chmod = EIO_CHMOD
1079 aio_mkdir = EIO_MKDIR
1080 PPCODE:
1081{
1082 dREQ;
1083
1084 req->int2 = mode;
1085 req->sv1 = newSVsv (fh_or_path);
1086
1087 if (SvPOK (req->sv1))
1088 {
1089 req->type = ix;
1090 req->ptr1 = SvPVbyte_nolen (req->sv1);
1091 }
1092 else
1093 {
1094 req->type = EIO_FCHMOD;
1095 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1096 }
1097
1098 REQ_SEND;
1099}
1100
1101void
1102aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1103 PPCODE:
1104{
1105 dREQ;
1106
1107 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1108 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1109 req->sv1 = newSVsv (fh_or_path);
1110
1111 if (SvPOK (req->sv1))
1112 {
1113 req->type = EIO_CHOWN;
1114 req->ptr1 = SvPVbyte_nolen (req->sv1);
1115 }
1116 else
1117 {
1118 req->type = EIO_FCHOWN;
1119 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1120 }
1121
1122 REQ_SEND;
1123}
1124
1125void
1126aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1127 PPCODE:
1128{
1129 dREQ;
1130
1131 req->type = EIO_READDIR;
1132 req->sv1 = newSVsv (pathname);
1133 req->ptr1 = SvPVbyte_nolen (req->sv1);
1134 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1135
1136 if (flags & EIO_READDIR_DENTS)
1137 req->int1 |= EIO_READDIR_CUSTOM2;
1138
1139 REQ_SEND;
1140}
1141
1142void
1143aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1144 ALIAS:
1145 aio_unlink = EIO_UNLINK
1146 aio_rmdir = EIO_RMDIR
1147 aio_readdir = EIO_READDIR
1148 PPCODE:
1149{
1150 dREQ;
1151
1152 req->type = ix;
1153 req->sv1 = newSVsv (pathname);
1154 req->ptr1 = SvPVbyte_nolen (req->sv1);
1155
1156 REQ_SEND;
1157}
1158
1159void
1160aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1161 ALIAS:
1162 aio_link = EIO_LINK
1163 aio_symlink = EIO_SYMLINK
1164 aio_rename = EIO_RENAME
1165 PPCODE:
1166{
1167 dREQ;
1168
1169 req->type = ix;
1170 req->sv1 = newSVsv (oldpath);
1171 req->ptr1 = SvPVbyte_nolen (req->sv1);
1172 req->sv2 = newSVsv (newpath);
1173 req->ptr2 = SvPVbyte_nolen (req->sv2);
1174
1175 REQ_SEND;
1176}
1177
1178void
1179aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1180 PPCODE:
1181{
1182 dREQ;
1183
1184 req->type = EIO_MKNOD;
1185 req->sv1 = newSVsv (pathname);
1186 req->ptr1 = SvPVbyte_nolen (req->sv1);
1187 req->int2 = (mode_t)mode;
1188 req->offs = dev;
1189
1190 REQ_SEND;
1191}
1192
1193void
1194aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1195 ALIAS:
1196 aio_mtouch = EIO_MTOUCH
1197 aio_msync = EIO_MSYNC
1198 PROTOTYPE: $$$$;$
1199 PPCODE:
1200{
1201 STRLEN svlen;
1202 UV len = SvUV (length);
1203 char *svptr = SvPVbyte (data, svlen);
1204
1205 if (offset < 0)
1206 offset += svlen;
1207
1208 if (offset < 0 || offset > svlen)
1209 croak ("offset outside of scalar");
1210
1211 if (!SvOK (length) || len + offset > svlen)
1212 len = svlen - offset;
1213
1214 {
1215 dREQ;
1216
1217 req->type = ix;
1218 req->size = len;
1219 req->sv2 = SvREFCNT_inc (data);
1220 req->ptr2 = (char *)svptr + offset;
1221 req->int1 = flags;
1222
1223 REQ_SEND;
1224 }
1225}
1226
1227void
1228aio_busy (double delay, SV *callback=&PL_sv_undef)
1229 PPCODE:
1230{
1231 dREQ;
1232
1233 req->type = EIO_BUSY;
1234 req->nv1 = delay < 0. ? 0. : delay;
1235
1236 REQ_SEND;
1237}
1238
1239void
1240aio_group (SV *callback=&PL_sv_undef)
1241 PROTOTYPE: ;$
1242 PPCODE:
1243{
1244 dREQ;
1245
1246 req->type = EIO_GROUP;
1247
1248 req_submit (req);
1249 XPUSHs (req_sv (req, aio_grp_stash));
1250}
1251
1252void
1253aio_nop (SV *callback=&PL_sv_undef)
1254 ALIAS:
1255 aio_nop = EIO_NOP
1256 aio_sync = EIO_SYNC
1257 PPCODE:
1258{
1259 dREQ;
1260
1261 req->type = ix;
1262
1263 REQ_SEND;
1264}
1265
1266int
1267aioreq_pri (int pri = 0)
1268 PROTOTYPE: ;$
1269 CODE:
1270 RETVAL = next_pri;
1271 if (items > 0)
1272 {
1273 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1274 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1275 next_pri = pri;
1276 }
1277 OUTPUT:
1278 RETVAL
1279
1280void
1281aioreq_nice (int nice = 0)
1282 CODE:
1283 nice = next_pri - nice;
1284 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1285 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1286 next_pri = nice;
1287
1288void
1289flush ()
1290 PROTOTYPE:
1291 CODE:
1292 while (eio_nreqs ())
363 { 1293 {
364 poll_wait (); 1294 poll_wait ();
365 poll_cb (); 1295 poll_cb ();
366 } 1296 }
367}
368 1297
369int 1298int
370max_outstanding(nreqs)
371 int nreqs
372 PROTOTYPE: $
373 CODE:
374 RETVAL = max_outstanding;
375 max_outstanding = nreqs;
376
377void
378aio_open(pathname,flags,mode,callback=&PL_sv_undef)
379 SV * pathname
380 int flags
381 int mode
382 SV * callback
383 PROTOTYPE: $$$;$
384 CODE:
385{
386 aio_req req;
387
388 Newz (0, req, 1, aio_cb);
389
390 if (!req)
391 croak ("out of memory during aio_req allocation");
392
393 req->type = REQ_OPEN;
394 req->data = newSVsv (pathname);
395 req->dataptr = SvPV_nolen (req->data);
396 req->fd = flags;
397 req->mode = mode;
398 req->callback = SvREFCNT_inc (callback);
399
400 send_req (req);
401}
402
403void
404aio_close(fh,callback=&PL_sv_undef)
405 SV * fh
406 SV * callback
407 PROTOTYPE: $;$
408 ALIAS:
409 aio_close = REQ_CLOSE
410 aio_fsync = REQ_FSYNC
411 aio_fdatasync = REQ_FDATASYNC
412 CODE:
413{
414 aio_req req;
415
416 Newz (0, req, 1, aio_cb);
417
418 if (!req)
419 croak ("out of memory during aio_req allocation");
420
421 req->type = ix;
422 req->fh = newSVsv (fh);
423 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424 req->callback = SvREFCNT_inc (callback);
425
426 send_req (req);
427}
428
429void
430aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
431 SV * fh
432 UV offset
433 IV length
434 SV * data
435 IV dataoffset
436 SV * callback
437 ALIAS:
438 aio_read = REQ_READ
439 aio_write = REQ_WRITE
440 PROTOTYPE: $$$$$;$
441 CODE:
442{
443 aio_req req;
444 STRLEN svlen;
445 char *svptr = SvPV (data, svlen);
446
447 SvUPGRADE (data, SVt_PV);
448 SvPOK_on (data);
449
450 if (dataoffset < 0)
451 dataoffset += svlen;
452
453 if (dataoffset < 0 || dataoffset > svlen)
454 croak ("data offset outside of string");
455
456 if (ix == REQ_WRITE)
457 {
458 /* write: check length and adjust. */
459 if (length < 0 || length + dataoffset > svlen)
460 length = svlen - dataoffset;
461 }
462 else
463 {
464 /* read: grow scalar as necessary */
465 svptr = SvGROW (data, length + dataoffset);
466 }
467
468 if (length < 0)
469 croak ("length must not be negative");
470
471 Newz (0, req, 1, aio_cb);
472
473 if (!req)
474 croak ("out of memory during aio_req allocation");
475
476 req->type = ix;
477 req->fh = newSVsv (fh);
478 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
479 : IoOFP (sv_2io (fh)));
480 req->offset = offset;
481 req->length = length;
482 req->data = SvREFCNT_inc (data);
483 req->dataptr = (char *)svptr + dataoffset;
484 req->callback = SvREFCNT_inc (callback);
485
486 send_req (req);
487}
488
489void
490aio_readahead(fh,offset,length,callback=&PL_sv_undef)
491 SV * fh
492 UV offset
493 IV length
494 SV * callback
495 PROTOTYPE: $$$;$
496 CODE:
497{
498 aio_req req;
499
500 if (length < 0)
501 croak ("length must not be negative");
502
503 Newz (0, req, 1, aio_cb);
504
505 if (!req)
506 croak ("out of memory during aio_req allocation");
507
508 req->type = REQ_READAHEAD;
509 req->fh = newSVsv (fh);
510 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
511 req->offset = offset;
512 req->length = length;
513 req->callback = SvREFCNT_inc (callback);
514
515 send_req (req);
516}
517
518void
519aio_stat(fh_or_path,callback=&PL_sv_undef)
520 SV * fh_or_path
521 SV * callback
522 ALIAS:
523 aio_stat = REQ_STAT
524 aio_lstat = REQ_LSTAT
525 CODE:
526{
527 aio_req req;
528
529 Newz (0, req, 1, aio_cb);
530
531 if (!req)
532 croak ("out of memory during aio_req allocation");
533
534 New (0, req->statdata, 1, Stat_t);
535
536 if (!req->statdata)
537 croak ("out of memory during aio_req->statdata allocation");
538
539 if (SvPOK (fh_or_path))
540 {
541 req->type = ix;
542 req->data = newSVsv (fh_or_path);
543 req->dataptr = SvPV_nolen (req->data);
544 }
545 else
546 {
547 req->type = REQ_FSTAT;
548 req->fh = newSVsv (fh_or_path);
549 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
550 }
551
552 req->callback = SvREFCNT_inc (callback);
553
554 send_req (req);
555}
556
557void
558aio_unlink(pathname,callback=&PL_sv_undef)
559 SV * pathname
560 SV * callback
561 CODE:
562{
563 aio_req req;
564
565 Newz (0, req, 1, aio_cb);
566
567 if (!req)
568 croak ("out of memory during aio_req allocation");
569
570 req->type = REQ_UNLINK;
571 req->data = newSVsv (pathname);
572 req->dataptr = SvPV_nolen (req->data);
573 req->callback = SvREFCNT_inc (callback);
574
575 send_req (req);
576}
577
578void
579flush()
580 PROTOTYPE:
581 CODE:
582 while (nreqs)
583 {
584 poll_wait ();
585 poll_cb ();
586 }
587
588void
589poll() 1299poll()
590 PROTOTYPE: 1300 PROTOTYPE:
591 CODE: 1301 CODE:
592 if (nreqs)
593 {
594 poll_wait (); 1302 poll_wait ();
595 poll_cb (); 1303 RETVAL = poll_cb ();
596 } 1304 OUTPUT:
1305 RETVAL
597 1306
598int 1307int
599poll_fileno() 1308poll_fileno()
600 PROTOTYPE: 1309 PROTOTYPE:
601 CODE: 1310 CODE:
602 RETVAL = respipe [0]; 1311 RETVAL = s_epipe_fd (&respipe);
603 OUTPUT: 1312 OUTPUT:
604 RETVAL 1313 RETVAL
605 1314
606int 1315int
607poll_cb(...) 1316poll_cb(...)
… …
613 1322
614void 1323void
615poll_wait() 1324poll_wait()
616 PROTOTYPE: 1325 PROTOTYPE:
617 CODE: 1326 CODE:
618 if (nreqs)
619 poll_wait (); 1327 poll_wait ();
620 1328
621int 1329int
622nreqs() 1330nreqs()
623 PROTOTYPE: 1331 PROTOTYPE:
624 CODE: 1332 CODE:
625 RETVAL = nreqs; 1333 RETVAL = eio_nreqs ();
626 OUTPUT: 1334 OUTPUT:
627 RETVAL 1335 RETVAL
628 1336
1337int
1338nready()
1339 PROTOTYPE:
1340 CODE:
1341 RETVAL = eio_nready ();
1342 OUTPUT:
1343 RETVAL
1344
1345int
1346npending()
1347 PROTOTYPE:
1348 CODE:
1349 RETVAL = eio_npending ();
1350 OUTPUT:
1351 RETVAL
1352
1353int
1354nthreads()
1355 PROTOTYPE:
1356 CODE:
1357 RETVAL = eio_nthreads ();
1358 OUTPUT:
1359 RETVAL
1360
1361int
1362fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1363 PROTOTYPE: $$$$
1364 CODE:
1365#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1366 RETVAL = posix_fadvise (fh, offset, length, advice);
1367#else
1368 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1369#endif
1370 OUTPUT:
1371 RETVAL
1372
1373ssize_t
1374sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1375 PROTOTYPE: $$$$
1376 CODE:
1377 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1378 OUTPUT:
1379 RETVAL
1380
1381void
1382mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1383 PROTOTYPE: $$$$$;$
1384 PPCODE:
1385 sv_unmagic (scalar, MMAP_MAGIC);
1386{
1387 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1388 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1389 if (addr == (void *)-1)
1390 XSRETURN_NO;
1391
1392 /* we store the length in mg_obj, as namlen is I32 :/ */
1393 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1394 ->mg_obj = (SV *)length;
1395
1396 SvUPGRADE (scalar, SVt_PV); /* nop... */
1397 if (!(prot & PROT_WRITE))
1398 SvREADONLY_on (scalar);
1399
1400 SvPVX (scalar) = (char *)addr;
1401 SvCUR_set (scalar, length);
1402 SvLEN_set (scalar, 0);
1403 SvPOK_only (scalar);
1404
1405 XSRETURN_YES;
1406}
1407
1408void
1409munmap (SV *scalar)
1410 PROTOTYPE: $
1411 CODE:
1412 sv_unmagic (scalar, MMAP_MAGIC);
1413
1414int
1415mlockall (int flags)
1416 PROTOTYPE: $
1417 CODE:
1418#if _POSIX_MEMLOCK
1419#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1420 extern int mallopt (int, int);
1421 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1422#endif
1423 mlockall (flags);
1424#else
1425 RETVAL = -1;
1426 errno = ENOSYS;
1427#endif
1428 OUTPUT:
1429 RETVAL
1430
1431int
1432munlockall ()
1433 PROTOTYPE:
1434 CODE:
1435#if _POSIX_MEMLOCK
1436 munlockall ();
1437#else
1438 RETVAL = -1;
1439 errno = ENOSYS;
1440#endif
1441 OUTPUT:
1442 RETVAL
1443
1444void _on_next_submit (SV *cb)
1445 CODE:
1446 SvREFCNT_dec (on_next_submit);
1447 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1448
1449PROTOTYPES: DISABLE
1450
1451MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452
1453void
1454cancel (aio_req_ornot req)
1455 CODE:
1456 eio_cancel (req);
1457
1458void
1459cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460 PPCODE:
1461{
1462 if (GIMME_V != G_VOID)
1463 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1464
1465 if (items > 1)
1466 {
1467 SV *cb_cv =get_cb (callback);
1468
1469 SvREFCNT_dec (req->callback);
1470 req->callback = SvREFCNT_inc (cb_cv);
1471 }
1472}
1473
1474MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1475
1476void
1477add (aio_req grp, ...)
1478 PPCODE:
1479{
1480 int i;
1481
1482 if (grp->int1 == 2)
1483 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484
1485 for (i = 1; i < items; ++i )
1486 {
1487 aio_req req;
1488
1489 if (GIMME_V != G_VOID)
1490 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1491
1492 req = SvAIO_REQ (ST (i));
1493
1494 if (req)
1495 eio_grp_add (grp, req);
1496 }
1497}
1498
1499void
1500cancel_subs (aio_req_ornot req)
1501 CODE:
1502 req_cancel_subs (req);
1503
1504void
1505result (aio_req grp, ...)
1506 CODE:
1507{
1508 int i;
1509 AV *av;
1510
1511 grp->errorno = errno;
1512
1513 av = newAV ();
1514 av_extend (av, items - 1);
1515
1516 for (i = 1; i < items; ++i )
1517 av_push (av, newSVsv (ST (i)));
1518
1519 SvREFCNT_dec (grp->sv1);
1520 grp->sv1 = (SV *)av;
1521}
1522
1523void
1524errno (aio_req grp, int errorno = errno)
1525 CODE:
1526 grp->errorno = errorno;
1527
1528void
1529limit (aio_req grp, int limit)
1530 CODE:
1531 eio_grp_limit (grp, limit);
1532
1533void
1534feed (aio_req grp, SV *callback=&PL_sv_undef)
1535 CODE:
1536{
1537 SvREFCNT_dec (grp->sv2);
1538 grp->sv2 = newSVsv (callback);
1539 grp->feed = aio_grp_feed;
1540
1541 if (grp->int2 <= 0)
1542 grp->int2 = 2;
1543
1544 eio_grp_limit (grp, grp->int2);
1545}
1546

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