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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
5#include <sys/types.h> 14#include <sys/types.h>
6#include <sys/stat.h> 15#include <sys/stat.h>
7 16#include <sys/statvfs.h>
8#include <unistd.h> 17#include <limits.h>
9#include <fcntl.h> 18#include <fcntl.h>
10#include <signal.h>
11#include <sched.h> 19#include <sched.h>
12#if __linux 20
21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
13#include <sys/syscall.h> 22# include <sys/mman.h>
14#endif 23#endif
15 24
16#include <pthread.h> 25#if !_POSIX_MAPPED_FILES
26# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
27# define munmap(addr,length) (errno = ENOSYS, -1)
28#endif
17 29
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 30/* perl namespace pollution */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 31#undef VERSION
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 32
22#if __ia64 33#ifdef _WIN32
23# define STACKSIZE 65536 34
35# define EIO_STRUCT_DIRENT Direntry_t
36# undef malloc
37# undef free
38
39// perl overrides all those nice win32 functions
40# undef open
41# undef read
42# undef write
43# undef send
44# undef recv
45# undef stat
46# undef fstat
47# define lstat stat
48# undef truncate
49# undef ftruncate
50# undef open
51# undef close
52# undef unlink
53# undef rmdir
54# undef rename
55# undef lseek
56
57# define chown(a,b,c) (errno = ENOSYS, -1)
58# define fchown(a,b,c) (errno = ENOSYS, -1)
59# define fchmod(a,b) (errno = ENOSYS, -1)
60# define symlink(a,b) (errno = ENOSYS, -1)
61# define readlink(a,b,c) (errno = ENOSYS, -1)
62# define mknod(a,b,c) (errno = ENOSYS, -1)
63# define truncate(a,b) (errno = ENOSYS, -1)
64# define ftruncate(fd,o) chsize ((fd), (o))
65# define fsync(fd) _commit (fd)
66# define opendir(fd) (errno = ENOSYS, 0)
67# define readdir(fd) (errno = ENOSYS, -1)
68# define closedir(fd) (errno = ENOSYS, -1)
69# define mkdir(a,b) mkdir (a)
70
24#else 71#else
25# define STACKSIZE 4096 72
73# include <sys/time.h>
74# include <sys/select.h>
75# include <unistd.h>
76# include <utime.h>
77# include <signal.h>
78# define EIO_STRUCT_DIRENT struct dirent
79
80#endif
81
82/* perl stupidly overrides readdir and maybe others */
83/* with thread-unsafe versions, imagine that :( */
84#undef readdir
85#undef opendir
86#undef closedir
87
88#define EIO_STRUCT_STAT Stat_t
89
90/* use NV for 32 bit perls as it allows larger offsets */
91#if IVSIZE >= 8
92# define VAL64 IV
93# define SvVAL64 SvIV
94# define newSVval64 newSViv
95#else
96# define VAL64 NV
97# define SvVAL64 SvNV
98# define newSVval64 newSVnv
99#endif
100
101/*****************************************************************************/
102
103#if __GNUC__ >= 3
104# define expect(expr,value) __builtin_expect ((expr),(value))
105#else
106# define expect(expr,value) (expr)
107#endif
108
109#define expect_false(expr) expect ((expr) != 0, 0)
110#define expect_true(expr) expect ((expr) != 0, 1)
111
112/*****************************************************************************/
113
114typedef SV SV8; /* byte-sv, used for argument-checking */
115typedef int aio_rfd; /* read file desriptor */
116typedef int aio_wfd; /* write file descriptor */
117
118static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
119
120#define EIO_REQ_MEMBERS \
121 SV *callback; \
122 SV *sv1, *sv2; \
123 STRLEN stroffset; \
124 SV *self;
125
126#define EIO_NO_WRAPPERS 1
127
128#include "libeio/eio.h"
129
130#ifndef POSIX_FADV_NORMAL
131# define POSIX_FADV_NORMAL 0
132# define NO_FADVISE 1
133#endif
134#ifndef POSIX_FADV_SEQUENTIAL
135# define POSIX_FADV_SEQUENTIAL 0
136#endif
137#ifndef POSIX_FADV_RANDOM
138# define POSIX_FADV_RANDOM 0
139#endif
140#ifndef POSIX_FADV_NOREUSE
141# define POSIX_FADV_NOREUSE 0
142#endif
143#ifndef POSIX_FADV_WILLNEED
144# define POSIX_FADV_WILLNEED 0
145#endif
146#ifndef POSIX_FADV_DONTNEED
147# define POSIX_FADV_DONTNEED 0
148#endif
149
150#ifndef ST_NODEV
151# define ST_NODEV 0
152#endif
153#ifndef ST_NOEXEC
154# define ST_NOEXEC 0
155#endif
156#ifndef ST_SYNCHRONOUS
157# define ST_SYNCHRONOUS 0
158#endif
159#ifndef ST_MANDLOCK
160# define ST_MANDLOCK 0
161#endif
162#ifndef ST_WRITE
163# define ST_WRITE 0
164#endif
165#ifndef ST_APPEND
166# define ST_APPEND 0
167#endif
168#ifndef ST_IMMUTABLE
169# define ST_IMMUTABLE 0
170#endif
171#ifndef ST_NOATIME
172# define ST_NOATIME 0
173#endif
174#ifndef ST_NODIRATIME
175# define ST_NODIRATIME 0
176#endif
177#ifndef ST_RELATIME
178# define ST_RELATIME 0
179#endif
180
181#ifndef MCL_CURRENT
182# define MCL_CURRENT 0
183#endif
184#ifndef MCL_FUTURE
185# define MCL_FUTURE 0
186#endif
187
188#ifndef MAP_ANONYMOUS
189# ifdef MAP_ANON
190# define MAP_ANONYMOUS MAP_ANON
191# else
192# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
26#endif 193# endif
194#endif
195#ifndef MAP_HUGETLB
196# define MAP_HUGETLB 0
197#endif
198#ifndef MAP_LOCKED
199# define MAP_LOCKED 0
200#endif
201#ifndef MAP_NORESERVE
202# define MAP_NORESERVE 0
203#endif
204#ifndef MAP_POPULATE
205# define MAP_POPULATE 0
206#endif
207#ifndef MAP_NONBLOCK
208# define MAP_NONBLOCK 0
209#endif
210
211#ifndef PAGESIZE
212# define PAGESIZE sysconf (_SC_PAGESIZE)
213#endif
214
215static int req_invoke (eio_req *req);
216#define EIO_FINISH(req) req_invoke (req)
217static void req_destroy (eio_req *grp);
218#define EIO_DESTROY(req) req_destroy (req)
27 219
28enum { 220enum {
29 REQ_QUIT, 221 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
30 REQ_OPEN, REQ_CLOSE,
31 REQ_READ, REQ_WRITE, REQ_READAHEAD,
32 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
33 REQ_FSYNC, REQ_FDATASYNC,
34}; 222};
35 223
36typedef struct aio_cb { 224#include "libeio/eio.c"
37 struct aio_cb *volatile next;
38 225
39 int type;
40
41 int fd;
42 off_t offset;
43 size_t length;
44 ssize_t result;
45 mode_t mode; /* open */
46 int errorno;
47 SV *data, *callback, *fh;
48 void *dataptr;
49 STRLEN dataoffset;
50
51 Stat_t *statdata;
52} aio_cb;
53
54typedef aio_cb *aio_req; 226typedef eio_req *aio_req;
227typedef eio_req *aio_req_ornot;
55 228
56static int started; 229static SV *on_next_submit;
57static volatile int nreqs; 230static int next_pri = EIO_PRI_DEFAULT;
58static int max_outstanding = 1<<30; 231static int max_outstanding;
59static int respipe [2];
60 232
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 233static s_epipe respipe;
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64 234
65static volatile aio_req reqs, reqe; /* queue start, queue end */ 235static void req_destroy (aio_req req);
66static volatile aio_req ress, rese; /* queue start, queue end */ 236static void req_cancel (aio_req req);
67 237
68static void 238static void want_poll (void)
69poll_wait ()
70{ 239{
71 if (nreqs && !ress) 240 /* write a dummy byte to the pipe so fh becomes ready */
241 s_epipe_signal (&respipe);
242}
243
244static void done_poll (void)
245{
246 /* read any signals sent by the worker threads */
247 s_epipe_drain (&respipe);
248}
249
250/* must be called at most once */
251static SV *req_sv (aio_req req, HV *stash)
252{
253 if (!req->self)
72 { 254 {
73 fd_set rfd; 255 req->self = (SV *)newHV ();
74 FD_ZERO(&rfd); 256 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
75 FD_SET(respipe [0], &rfd);
76
77 select (respipe [0] + 1, &rfd, 0, 0, 0);
78 } 257 }
79}
80 258
81static int 259 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
82poll_cb () 260}
261
262static aio_req SvAIO_REQ (SV *sv)
263{
264 MAGIC *mg;
265
266 if (!SvROK (sv)
267 || (SvSTASH (SvRV (sv)) != aio_grp_stash
268 && SvSTASH (SvRV (sv)) != aio_req_stash
269 && !sv_derived_from (sv, "IO::AIO::REQ")))
270 croak ("object of class IO::AIO::REQ expected");
271
272 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273
274 return mg ? (aio_req)mg->mg_ptr : 0;
275}
276
277static void aio_grp_feed (aio_req grp)
278{
279 if (grp->sv2 && SvOK (grp->sv2))
280 {
281 dSP;
282
283 ENTER;
284 SAVETMPS;
285 PUSHMARK (SP);
286 XPUSHs (req_sv (grp, aio_grp_stash));
287 PUTBACK;
288 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
289 SPAGAIN;
290 FREETMPS;
291 LEAVE;
292 }
293}
294
295static void req_submit (eio_req *req)
296{
297 eio_submit (req);
298
299 if (expect_false (on_next_submit))
300 {
301 dSP;
302 SV *cb = sv_2mortal (on_next_submit);
303
304 on_next_submit = 0;
305
306 PUSHMARK (SP);
307 PUTBACK;
308 call_sv (cb, G_DISCARD | G_EVAL);
309 }
310}
311
312static int req_invoke (eio_req *req)
83{ 313{
84 dSP; 314 dSP;
85 int count = 0;
86 aio_req req, prv;
87 315
88 pthread_mutex_lock (&reslock); 316 if (req->flags & FLAG_SV2_RO_OFF)
317 SvREADONLY_off (req->sv2);
89 318
90 { 319 if (!EIO_CANCELLED (req) && req->callback)
91 /* read any signals sent by the worker threads */
92 char buf [32];
93 while (read (respipe [0], buf, 32) > 0)
94 ;
95 }
96
97 req = ress;
98 ress = rese = 0;
99
100 pthread_mutex_unlock (&reslock);
101
102 while (req)
103 { 320 {
104 nreqs--; 321 ENTER;
322 SAVETMPS;
323 PUSHMARK (SP);
324 EXTEND (SP, 1);
105 325
106 if (req->type == REQ_QUIT) 326 switch (req->type)
107 started--;
108 else
109 { 327 {
110 int errorno = errno; 328 case EIO_READDIR:
111 errno = req->errorno;
112
113 if (req->type == REQ_READ)
114 SvCUR_set (req->data, req->dataoffset
115 + req->result > 0 ? req->result : 0);
116
117 if (req->data)
118 SvREFCNT_dec (req->data);
119
120 if (req->fh)
121 SvREFCNT_dec (req->fh);
122
123 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
124 { 329 {
125 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 330 SV *rv = &PL_sv_undef;
126 PL_laststatval = req->result;
127 PL_statcache = *(req->statdata);
128 331
129 Safefree (req->statdata); 332 if (req->result >= 0)
333 {
334 int i;
335 char *names = (char *)req->ptr2;
336 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
337 AV *av = newAV ();
338
339 av_extend (av, req->result - 1);
340
341 for (i = 0; i < req->result; ++i)
342 {
343 if (req->int1 & EIO_READDIR_DENTS)
344 {
345 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
346
347 if (req->int1 & EIO_READDIR_CUSTOM2)
348 {
349 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
350 AV *avent = newAV ();
351
352 av_extend (avent, 2);
353
354 if (!sv_type [ent->type])
355 {
356 sv_type [ent->type] = newSViv (ent->type);
357 SvREADONLY_on (sv_type [ent->type]);
358 }
359
360 av_store (avent, 0, namesv);
361 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
362 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
363
364 av_store (av, i, newRV_noinc ((SV *)avent));
365 }
366 else
367 av_store (av, i, namesv);
368
369 ++ent;
370 }
371 else
372 {
373 SV *name = newSVpv (names, 0);
374 av_store (av, i, name);
375 names += SvCUR (name) + 1;
376 }
377 }
378
379 rv = sv_2mortal (newRV_noinc ((SV *)av));
380 }
381
382 PUSHs (rv);
383
384 if (req->int1 & EIO_READDIR_CUSTOM1)
385 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
130 } 386 }
387 break;
131 388
132 ENTER; 389 case EIO_OPEN:
133 PUSHMARK (SP);
134 XPUSHs (sv_2mortal (newSViv (req->result)));
135
136 if (req->type == REQ_OPEN)
137 { 390 {
138 /* convert fd to fh */ 391 /* convert fd to fh */
139 SV *fh; 392 SV *fh = &PL_sv_undef;
140 393
141 PUTBACK; 394 if (req->result >= 0)
142 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 395 {
143 SPAGAIN; 396 GV *gv = (GV *)sv_newmortal ();
397 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
398 char sym [64];
399 int symlen;
400
401 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
402 gv_init (gv, aio_stash, sym, symlen, 0);
144 403
145 fh = SvREFCNT_inc (POPs); 404 symlen = snprintf (
405 sym,
406 sizeof (sym),
407 "%s&=%d",
408 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
409 (int)req->result
410 );
146 411
412 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
413 fh = (SV *)gv;
414 }
415
147 PUSHMARK (SP); 416 PUSHs (fh);
148 XPUSHs (sv_2mortal (fh));
149 } 417 }
418 break;
150 419
151 if (SvOK (req->callback)) 420 case EIO_STATVFS:
421 case EIO_FSTATVFS:
152 { 422 {
153 PUTBACK; 423 SV *rv = &PL_sv_undef;
154 call_sv (req->callback, G_VOID | G_EVAL); 424
155 SPAGAIN; 425 if (req->result >= 0)
426 {
427 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
428 HV *hv = newHV ();
429
430 rv = sv_2mortal (newRV_noinc ((SV *)hv));
431
432 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
433 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
434 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
435 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
436 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
437 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
438 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
439 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
440 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
441 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
442 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
443 }
444
445 PUSHs (rv);
156 } 446 }
157 447
158 LEAVE; 448 break;
159
160 if (req->callback)
161 SvREFCNT_dec (req->callback);
162 449
163 errno = errorno; 450 case EIO_GROUP:
164 count++; 451 req->int1 = 2; /* mark group as finished */
165 }
166 452
167 prv = req;
168 req = req->next;
169 Safefree (prv);
170
171 /* TODO: croak on errors? */
172 }
173
174 return count;
175}
176
177static void *aio_proc(void *arg);
178
179static void
180start_thread (void)
181{
182 sigset_t fullsigset, oldsigset;
183 pthread_t tid;
184 pthread_attr_t attr;
185
186 pthread_attr_init (&attr);
187 pthread_attr_setstacksize (&attr, STACKSIZE);
188 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
189
190 sigfillset (&fullsigset);
191 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
192
193 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
194 started++;
195
196 sigprocmask (SIG_SETMASK, &oldsigset, 0);
197}
198
199static void
200send_req (aio_req req)
201{
202 nreqs++;
203
204 pthread_mutex_lock (&reqlock);
205
206 req->next = 0;
207
208 if (reqe)
209 {
210 reqe->next = req;
211 reqe = req;
212 }
213 else
214 reqe = reqs = req;
215
216 pthread_cond_signal (&reqwait);
217 pthread_mutex_unlock (&reqlock);
218
219 while (nreqs > max_outstanding)
220 {
221 poll_wait ();
222 poll_cb ();
223 }
224}
225
226static void
227end_thread (void)
228{
229 aio_req req;
230 New (0, req, 1, aio_cb);
231 req->type = REQ_QUIT;
232
233 send_req (req);
234}
235
236static void *
237aio_proc (void *thr_arg)
238{
239 aio_req req;
240 int type;
241
242 do
243 {
244 pthread_mutex_lock (&reqlock);
245
246 for (;;)
247 {
248 req = reqs;
249
250 if (reqs) 453 if (req->sv1)
454 {
455 int i;
456 AV *av = (AV *)req->sv1;
457
458 EXTEND (SP, AvFILL (av) + 1);
459 for (i = 0; i <= AvFILL (av); ++i)
460 PUSHs (*av_fetch (av, i, 0));
461 }
462 break;
463
464 case EIO_NOP:
465 case EIO_BUSY:
466 break;
467
468 case EIO_READLINK:
469 if (req->result > 0)
470 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
471 break;
472
473 case EIO_STAT:
474 case EIO_LSTAT:
475 case EIO_FSTAT:
476 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
477 PL_laststatval = req->result;
478 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
479 PUSHs (sv_2mortal (newSViv (req->result)));
480 break;
481
482 case EIO_READ:
251 { 483 {
252 reqs = reqs->next; 484 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
253 if (!reqs) reqe = 0; 485 *SvEND (req->sv2) = 0;
486 SvPOK_only (req->sv2);
487 SvSETMAGIC (req->sv2);
488 PUSHs (sv_2mortal (newSViv (req->result)));
254 } 489 }
255
256 if (req)
257 break; 490 break;
258 491
259 pthread_cond_wait (&reqwait, &reqlock);
260 }
261
262 pthread_mutex_unlock (&reqlock);
263
264 errno = 0; /* strictly unnecessary */
265
266 type = req->type;
267
268 switch (type)
269 {
270 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
271 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272#if SYS_readahead
273 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
274#else
275 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
276#endif
277
278 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
279 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
280 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
281
282 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
283 case REQ_CLOSE: req->result = close (req->fd); break;
284 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
285
286 case REQ_FSYNC: req->result = fsync (req->fd); break;
287 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288
289 case REQ_QUIT: 492 case EIO_DUP2:
290 break; 493 if (req->result > 0)
494 req->result = 0;
495 /* FALLTHROUGH */
291 496
292 default: 497 default:
293 req->result = ENOSYS; 498 PUSHs (sv_2mortal (newSViv (req->result)));
294 break; 499 break;
295 } 500 }
296 501
297 req->errorno = errno; 502 errno = req->errorno;
298 503
299 pthread_mutex_lock (&reslock); 504 PUTBACK;
505 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
506 SPAGAIN;
300 507
301 req->next = 0; 508 FREETMPS;
509 LEAVE;
302 510
303 if (rese) 511 PUTBACK;
304 {
305 rese->next = req;
306 rese = req;
307 }
308 else
309 {
310 rese = ress = req;
311
312 /* write a dummy byte to the pipe so fh becomes ready */
313 write (respipe [1], &respipe, 1);
314 }
315
316 pthread_mutex_unlock (&reslock);
317 } 512 }
318 while (type != REQ_QUIT); 513
514 return !!SvTRUE (ERRSV);
515}
516
517static void req_destroy (aio_req req)
518{
519 if (req->self)
520 {
521 sv_unmagic (req->self, PERL_MAGIC_ext);
522 SvREFCNT_dec (req->self);
523 }
524
525 SvREFCNT_dec (req->sv1);
526 SvREFCNT_dec (req->sv2);
527 SvREFCNT_dec (req->callback);
528
529 Safefree (req);
530}
531
532static void req_cancel_subs (aio_req grp)
533{
534 aio_req sub;
535
536 if (grp->type != EIO_GROUP)
537 return;
538
539 SvREFCNT_dec (grp->sv2);
540 grp->sv2 = 0;
541
542 eio_grp_cancel (grp);
543}
544
545static void
546create_respipe (void)
547{
548 if (s_epipe_renew (&respipe))
549 croak ("IO::AIO: unable to initialize result pipe");
550}
551
552static void poll_wait (void)
553{
554 while (eio_nreqs ())
555 {
556 int size;
557
558 X_LOCK (reslock);
559 size = res_queue.size;
560 X_UNLOCK (reslock);
561
562 if (size)
563 return;
564
565 etp_maybe_start_thread ();
566
567 s_epipe_wait (&respipe);
568 }
569}
570
571static int poll_cb (void)
572{
573 for (;;)
574 {
575 int res = eio_poll ();
576
577 if (res > 0)
578 croak (0);
579
580 if (!max_outstanding || max_outstanding > eio_nreqs ())
581 return res;
582
583 poll_wait ();
584 }
585}
586
587static void atfork_child (void)
588{
589 create_respipe ();
590}
591
592/*****************************************************************************/
593
594#define MMAP_MAGIC PERL_MAGIC_ext
595
596static int
597mmap_free (pTHX_ SV *sv, MAGIC *mg)
598{
599 int old_errno = errno;
600 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
601 errno = old_errno;
602
603 mg->mg_obj = 0; /* just in case */
604
605 SvREADONLY_off (sv);
606 SvCUR_set (sv, 0);
607 SvLEN_set (sv, 0);
608 SvPVX (sv) = 0;
609 SvOK_off (sv);
319 610
320 return 0; 611 return 0;
321} 612}
322 613
614static MGVTBL mmap_vtbl = {
615 0, 0, 0, 0, mmap_free
616};
617
618/*****************************************************************************/
619
620static SV *
621get_cb (SV *cb_sv)
622{
623 SvGETMAGIC (cb_sv);
624 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
625}
626
627#define dREQ \
628 SV *cb_cv; \
629 aio_req req; \
630 int req_pri = next_pri; \
631 next_pri = EIO_PRI_DEFAULT; \
632 \
633 cb_cv = get_cb (callback); \
634 \
635 Newz (0, req, 1, eio_req); \
636 if (!req) \
637 croak ("out of memory during eio_req allocation"); \
638 \
639 req->callback = SvREFCNT_inc (cb_cv); \
640 req->pri = req_pri
641
642#define REQ_SEND \
643 PUTBACK; \
644 req_submit (req); \
645 SPAGAIN; \
646 \
647 if (GIMME_V != G_VOID) \
648 XPUSHs (req_sv (req, aio_req_stash));
649
323MODULE = IO::AIO PACKAGE = IO::AIO 650MODULE = IO::AIO PACKAGE = IO::AIO
324 651
325PROTOTYPES: ENABLE 652PROTOTYPES: ENABLE
326 653
327BOOT: 654BOOT:
328{ 655{
329 if (pipe (respipe)) 656 static const struct {
330 croak ("unable to initialize result pipe"); 657 const char *name;
658 IV iv;
659 } *civ, const_iv[] = {
660# define const_niv(name, value) { # name, (IV) value },
661# define const_iv(name) { # name, (IV) name },
662# define const_eio(name) { # name, (IV) EIO_ ## name },
663 const_iv (EXDEV)
664 const_iv (ENOSYS)
665 const_iv (O_RDONLY)
666 const_iv (O_WRONLY)
667 const_iv (O_CREAT)
668 const_iv (O_TRUNC)
669#ifndef _WIN32
670 const_iv (S_IFIFO)
671#endif
672 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
673 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
674 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
675 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
676 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
677 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
331 678
332 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 679 const_iv (ST_RDONLY)
333 croak ("cannot set result pipe to nonblocking mode"); 680 const_iv (ST_NOSUID)
681 const_iv (ST_NODEV)
682 const_iv (ST_NOEXEC)
683 const_iv (ST_SYNCHRONOUS)
684 const_iv (ST_MANDLOCK)
685 const_iv (ST_WRITE)
686 const_iv (ST_APPEND)
687 const_iv (ST_IMMUTABLE)
688 const_iv (ST_NOATIME)
689 const_iv (ST_NODIRATIME)
690 const_iv (ST_RELATIME)
334 691
335 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 692 const_iv (PROT_EXEC)
336 croak ("cannot set result pipe to nonblocking mode"); 693 const_iv (PROT_NONE)
337} 694 const_iv (PROT_READ)
695 const_iv (PROT_WRITE)
338 696
697 /*const_iv (MAP_FIXED)*/
698 const_iv (MAP_PRIVATE)
699 const_iv (MAP_SHARED)
700 const_iv (MAP_ANONYMOUS)
701
702 /* linuxish */
703 const_iv (MAP_HUGETLB)
704 const_iv (MAP_LOCKED)
705 const_iv (MAP_NORESERVE)
706 const_iv (MAP_POPULATE)
707 const_iv (MAP_NONBLOCK)
708
709 const_iv (MCL_FUTURE)
710 const_iv (MCL_CURRENT)
711
712 const_eio (MS_ASYNC)
713 const_eio (MS_INVALIDATE)
714 const_eio (MS_SYNC)
715
716 const_eio (MT_MODIFY)
717
718 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
719 const_eio (SYNC_FILE_RANGE_WRITE)
720 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
721
722 const_eio (READDIR_DENTS)
723 const_eio (READDIR_DIRS_FIRST)
724 const_eio (READDIR_STAT_ORDER)
725 const_eio (READDIR_FOUND_UNKNOWN)
726
727 const_eio (DT_UNKNOWN)
728 const_eio (DT_FIFO)
729 const_eio (DT_CHR)
730 const_eio (DT_DIR)
731 const_eio (DT_BLK)
732 const_eio (DT_REG)
733 const_eio (DT_LNK)
734 const_eio (DT_SOCK)
735 const_eio (DT_WHT)
736 };
737
738 aio_stash = gv_stashpv ("IO::AIO" , 1);
739 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
740 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
741
742 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
743 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
744
745 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
746
747 create_respipe ();
748
749 if (eio_init (want_poll, done_poll) < 0)
750 croak ("IO::AIO: unable to initialise eio library");
751
752 /* atfork child called in fifo order, so before eio's handler */
753 X_THREAD_ATFORK (0, 0, atfork_child);
754}
755
339void 756void
340min_parallel(nthreads) 757max_poll_reqs (int nreqs)
341 int nthreads
342 PROTOTYPE: $ 758 PROTOTYPE: $
343 CODE: 759 CODE:
344 while (nthreads > started) 760 eio_set_max_poll_reqs (nreqs);
345 start_thread ();
346 761
347void 762void
348max_parallel(nthreads) 763max_poll_time (double nseconds)
349 int nthreads
350 PROTOTYPE: $ 764 PROTOTYPE: $
351 CODE: 765 CODE:
766 eio_set_max_poll_time (nseconds);
767
768void
769min_parallel (int nthreads)
770 PROTOTYPE: $
771 CODE:
772 eio_set_min_parallel (nthreads);
773
774void
775max_parallel (int nthreads)
776 PROTOTYPE: $
777 CODE:
778 eio_set_max_parallel (nthreads);
779
780void
781max_idle (int nthreads)
782 PROTOTYPE: $
783 CODE:
784 eio_set_max_idle (nthreads);
785
786void
787max_outstanding (int maxreqs)
788 PROTOTYPE: $
789 CODE:
790 max_outstanding = maxreqs;
791
792void
793aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
794 PROTOTYPE: $$$;$
795 PPCODE:
352{ 796{
353 int cur = started; 797 dREQ;
354 while (cur > nthreads) 798
355 { 799 req->type = EIO_OPEN;
356 end_thread (); 800 req->sv1 = newSVsv (pathname);
357 cur--; 801 req->ptr1 = SvPVbyte_nolen (req->sv1);
802 req->int1 = flags;
803 req->int2 = mode;
804
805 REQ_SEND;
806}
807
808void
809aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
810 PROTOTYPE: $;$
811 ALIAS:
812 aio_fsync = EIO_FSYNC
813 aio_fdatasync = EIO_FDATASYNC
814 PPCODE:
815{
816 int fd = s_fileno_croak (fh, 0);
817 dREQ;
818
819 req->type = ix;
820 req->sv1 = newSVsv (fh);
821 req->int1 = fd;
822
823 REQ_SEND (req);
824}
825
826void
827aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
828 PROTOTYPE: $$$$;$
829 PPCODE:
830{
831 int fd = s_fileno_croak (fh, 0);
832 dREQ;
833
834 req->type = EIO_SYNC_FILE_RANGE;
835 req->sv1 = newSVsv (fh);
836 req->int1 = fd;
837 req->offs = offset;
838 req->size = nbytes;
839 req->int2 = flags;
840
841 REQ_SEND (req);
842}
843
844void
845aio_close (SV *fh, SV *callback=&PL_sv_undef)
846 PROTOTYPE: $;$
847 PPCODE:
848{
849 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
850 int fd = s_fileno_croak (fh, 0);
851 dREQ;
852
853 if (close_pipe < 0)
854 {
855 int pipefd [2];
856
857 if (pipe (pipefd) < 0
858 || close (pipefd [1]) < 0
859 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
860 abort (); /*D*/
861
862 close_pipe = pipefd [0];
358 } 863 }
359 864
360 while (started > nthreads) 865 req->type = EIO_DUP2;
866 req->int1 = close_pipe;
867 req->sv2 = newSVsv (fh);
868 req->int2 = fd;
869
870 REQ_SEND (req);
871}
872
873void
874aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
875 ALIAS:
876 aio_read = EIO_READ
877 aio_write = EIO_WRITE
878 PROTOTYPE: $$$$$;$
879 PPCODE:
880{
881 STRLEN svlen;
882 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
883 char *svptr = SvPVbyte (data, svlen);
884 UV len = SvUV (length);
885
886 if (dataoffset < 0)
887 dataoffset += svlen;
888
889 if (dataoffset < 0 || dataoffset > svlen)
890 croak ("dataoffset outside of data scalar");
891
892 if (ix == EIO_WRITE)
893 {
894 /* write: check length and adjust. */
895 if (!SvOK (length) || len + dataoffset > svlen)
896 len = svlen - dataoffset;
897 }
898 else
899 {
900 /* read: check type and grow scalar as necessary */
901 SvUPGRADE (data, SVt_PV);
902 svptr = SvGROW (data, len + dataoffset + 1);
903 }
904
905 {
906 dREQ;
907
908 req->type = ix;
909 req->sv1 = newSVsv (fh);
910 req->int1 = fd;
911 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
912 req->size = len;
913 req->sv2 = SvREFCNT_inc (data);
914 req->ptr2 = (char *)svptr + dataoffset;
915 req->stroffset = dataoffset;
916
917 if (!SvREADONLY (data))
918 {
919 SvREADONLY_on (data);
920 req->flags |= FLAG_SV2_RO_OFF;
921 }
922
923 REQ_SEND;
924 }
925}
926
927void
928aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
929 PROTOTYPE: $$;$
930 PPCODE:
931{
932 SV *data;
933 dREQ;
934
935 req->type = EIO_READLINK;
936 req->sv1 = newSVsv (path);
937 req->ptr1 = SvPVbyte_nolen (req->sv1);
938
939 REQ_SEND;
940}
941
942void
943aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
944 PROTOTYPE: $$$$;$
945 PPCODE:
946{
947 int ifd = s_fileno_croak (in_fh , 0);
948 int ofd = s_fileno_croak (out_fh, 1);
949 dREQ;
950
951 req->type = EIO_SENDFILE;
952 req->sv1 = newSVsv (out_fh);
953 req->int1 = ofd;
954 req->sv2 = newSVsv (in_fh);
955 req->int2 = ifd;
956 req->offs = in_offset;
957 req->size = length;
958
959 REQ_SEND;
960}
961
962void
963aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
964 PROTOTYPE: $$$;$
965 PPCODE:
966{
967 int fd = s_fileno_croak (fh, 0);
968 dREQ;
969
970 req->type = EIO_READAHEAD;
971 req->sv1 = newSVsv (fh);
972 req->int1 = fd;
973 req->offs = offset;
974 req->size = length;
975
976 REQ_SEND;
977}
978
979void
980aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
981 ALIAS:
982 aio_stat = EIO_STAT
983 aio_lstat = EIO_LSTAT
984 aio_statvfs = EIO_STATVFS
985 PPCODE:
986{
987 dREQ;
988
989 req->sv1 = newSVsv (fh_or_path);
990
991 if (SvPOK (req->sv1))
992 {
993 req->type = ix;
994 req->ptr1 = SvPVbyte_nolen (req->sv1);
995 }
996 else
997 {
998 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
999 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1000 }
1001
1002 REQ_SEND;
1003}
1004
1005void
1006aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1007 PPCODE:
1008{
1009 dREQ;
1010
1011 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1012 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1013 req->sv1 = newSVsv (fh_or_path);
1014
1015 if (SvPOK (req->sv1))
1016 {
1017 req->type = EIO_UTIME;
1018 req->ptr1 = SvPVbyte_nolen (req->sv1);
1019 }
1020 else
1021 {
1022 req->type = EIO_FUTIME;
1023 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1024 }
1025
1026 REQ_SEND;
1027}
1028
1029void
1030aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1031 PPCODE:
1032{
1033 dREQ;
1034
1035 req->sv1 = newSVsv (fh_or_path);
1036 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1037
1038 if (SvPOK (req->sv1))
1039 {
1040 req->type = EIO_TRUNCATE;
1041 req->ptr1 = SvPVbyte_nolen (req->sv1);
1042 }
1043 else
1044 {
1045 req->type = EIO_FTRUNCATE;
1046 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1047 }
1048
1049 REQ_SEND;
1050}
1051
1052void
1053aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1054 ALIAS:
1055 aio_chmod = EIO_CHMOD
1056 aio_mkdir = EIO_MKDIR
1057 PPCODE:
1058{
1059 dREQ;
1060
1061 req->int2 = mode;
1062 req->sv1 = newSVsv (fh_or_path);
1063
1064 if (SvPOK (req->sv1))
1065 {
1066 req->type = ix;
1067 req->ptr1 = SvPVbyte_nolen (req->sv1);
1068 }
1069 else
1070 {
1071 req->type = EIO_FCHMOD;
1072 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1073 }
1074
1075 REQ_SEND;
1076}
1077
1078void
1079aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1080 PPCODE:
1081{
1082 dREQ;
1083
1084 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1085 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1086 req->sv1 = newSVsv (fh_or_path);
1087
1088 if (SvPOK (req->sv1))
1089 {
1090 req->type = EIO_CHOWN;
1091 req->ptr1 = SvPVbyte_nolen (req->sv1);
1092 }
1093 else
1094 {
1095 req->type = EIO_FCHOWN;
1096 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097 }
1098
1099 REQ_SEND;
1100}
1101
1102void
1103aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1104 PPCODE:
1105{
1106 dREQ;
1107
1108 req->type = EIO_READDIR;
1109 req->sv1 = newSVsv (pathname);
1110 req->ptr1 = SvPVbyte_nolen (req->sv1);
1111 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1112
1113 if (flags & EIO_READDIR_DENTS)
1114 req->int1 |= EIO_READDIR_CUSTOM2;
1115
1116 REQ_SEND;
1117}
1118
1119void
1120aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1121 ALIAS:
1122 aio_unlink = EIO_UNLINK
1123 aio_rmdir = EIO_RMDIR
1124 aio_readdir = EIO_READDIR
1125 PPCODE:
1126{
1127 dREQ;
1128
1129 req->type = ix;
1130 req->sv1 = newSVsv (pathname);
1131 req->ptr1 = SvPVbyte_nolen (req->sv1);
1132
1133 REQ_SEND;
1134}
1135
1136void
1137aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1138 ALIAS:
1139 aio_link = EIO_LINK
1140 aio_symlink = EIO_SYMLINK
1141 aio_rename = EIO_RENAME
1142 PPCODE:
1143{
1144 dREQ;
1145
1146 req->type = ix;
1147 req->sv1 = newSVsv (oldpath);
1148 req->ptr1 = SvPVbyte_nolen (req->sv1);
1149 req->sv2 = newSVsv (newpath);
1150 req->ptr2 = SvPVbyte_nolen (req->sv2);
1151
1152 REQ_SEND;
1153}
1154
1155void
1156aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1157 PPCODE:
1158{
1159 dREQ;
1160
1161 req->type = EIO_MKNOD;
1162 req->sv1 = newSVsv (pathname);
1163 req->ptr1 = SvPVbyte_nolen (req->sv1);
1164 req->int2 = (mode_t)mode;
1165 req->offs = dev;
1166
1167 REQ_SEND;
1168}
1169
1170void
1171aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1172 ALIAS:
1173 aio_mtouch = EIO_MTOUCH
1174 aio_msync = EIO_MSYNC
1175 PROTOTYPE: $$$$;$
1176 PPCODE:
1177{
1178 STRLEN svlen;
1179 UV len = SvUV (length);
1180 char *svptr = SvPVbyte (data, svlen);
1181
1182 if (offset < 0)
1183 offset += svlen;
1184
1185 if (offset < 0 || offset > svlen)
1186 croak ("offset outside of scalar");
1187
1188 if (!SvOK (length) || len + offset > svlen)
1189 len = svlen - offset;
1190
1191 {
1192 dREQ;
1193
1194 req->type = ix;
1195 req->size = len;
1196 req->sv2 = SvREFCNT_inc (data);
1197 req->ptr2 = (char *)svptr + offset;
1198 req->int1 = flags;
1199
1200 REQ_SEND;
1201 }
1202}
1203
1204void
1205aio_busy (double delay, SV *callback=&PL_sv_undef)
1206 PPCODE:
1207{
1208 dREQ;
1209
1210 req->type = EIO_BUSY;
1211 req->nv1 = delay < 0. ? 0. : delay;
1212
1213 REQ_SEND;
1214}
1215
1216void
1217aio_group (SV *callback=&PL_sv_undef)
1218 PROTOTYPE: ;$
1219 PPCODE:
1220{
1221 dREQ;
1222
1223 req->type = EIO_GROUP;
1224
1225 req_submit (req);
1226 XPUSHs (req_sv (req, aio_grp_stash));
1227}
1228
1229void
1230aio_nop (SV *callback=&PL_sv_undef)
1231 ALIAS:
1232 aio_nop = EIO_NOP
1233 aio_sync = EIO_SYNC
1234 PPCODE:
1235{
1236 dREQ;
1237
1238 req->type = ix;
1239
1240 REQ_SEND;
1241}
1242
1243int
1244aioreq_pri (int pri = 0)
1245 PROTOTYPE: ;$
1246 CODE:
1247 RETVAL = next_pri;
1248 if (items > 0)
1249 {
1250 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1251 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1252 next_pri = pri;
1253 }
1254 OUTPUT:
1255 RETVAL
1256
1257void
1258aioreq_nice (int nice = 0)
1259 CODE:
1260 nice = next_pri - nice;
1261 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1262 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1263 next_pri = nice;
1264
1265void
1266flush ()
1267 PROTOTYPE:
1268 CODE:
1269 while (eio_nreqs ())
361 { 1270 {
362 poll_wait (); 1271 poll_wait ();
363 poll_cb (); 1272 poll_cb ();
364 } 1273 }
365}
366 1274
367int 1275int
368max_outstanding(nreqs)
369 int nreqs
370 PROTOTYPE: $
371 CODE:
372 RETVAL = max_outstanding;
373 max_outstanding = nreqs;
374
375void
376aio_open(pathname,flags,mode,callback=&PL_sv_undef)
377 SV * pathname
378 int flags
379 int mode
380 SV * callback
381 PROTOTYPE: $$$;$
382 CODE:
383{
384 aio_req req;
385
386 Newz (0, req, 1, aio_cb);
387
388 if (!req)
389 croak ("out of memory during aio_req allocation");
390
391 req->type = REQ_OPEN;
392 req->data = newSVsv (pathname);
393 req->dataptr = SvPV_nolen (req->data);
394 req->fd = flags;
395 req->mode = mode;
396 req->callback = SvREFCNT_inc (callback);
397
398 send_req (req);
399}
400
401void
402aio_close(fh,callback=&PL_sv_undef)
403 SV * fh
404 SV * callback
405 PROTOTYPE: $;$
406 ALIAS:
407 aio_close = REQ_CLOSE
408 aio_fsync = REQ_FSYNC
409 aio_fdatasync = REQ_FDATASYNC
410 CODE:
411{
412 aio_req req;
413
414 Newz (0, req, 1, aio_cb);
415
416 if (!req)
417 croak ("out of memory during aio_req allocation");
418
419 req->type = ix;
420 req->fh = newSVsv (fh);
421 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422 req->callback = SvREFCNT_inc (callback);
423
424 send_req (req);
425}
426
427void
428aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
429 SV * fh
430 UV offset
431 IV length
432 SV * data
433 IV dataoffset
434 SV * callback
435 ALIAS:
436 aio_read = REQ_READ
437 aio_write = REQ_WRITE
438 PROTOTYPE: $$$$$;$
439 CODE:
440{
441 aio_req req;
442 STRLEN svlen;
443 char *svptr = SvPV (data, svlen);
444
445 SvUPGRADE (data, SVt_PV);
446 SvPOK_on (data);
447
448 if (dataoffset < 0)
449 dataoffset += svlen;
450
451 if (dataoffset < 0 || dataoffset > svlen)
452 croak ("data offset outside of string");
453
454 if (ix == REQ_WRITE)
455 {
456 /* write: check length and adjust. */
457 if (length < 0 || length + dataoffset > svlen)
458 length = svlen - dataoffset;
459 }
460 else
461 {
462 /* read: grow scalar as necessary */
463 svptr = SvGROW (data, length + dataoffset);
464 }
465
466 if (length < 0)
467 croak ("length must not be negative");
468
469 Newz (0, req, 1, aio_cb);
470
471 if (!req)
472 croak ("out of memory during aio_req allocation");
473
474 req->type = ix;
475 req->fh = newSVsv (fh);
476 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477 : IoOFP (sv_2io (fh)));
478 req->offset = offset;
479 req->length = length;
480 req->data = SvREFCNT_inc (data);
481 req->dataptr = (char *)svptr + dataoffset;
482 req->callback = SvREFCNT_inc (callback);
483
484 send_req (req);
485}
486
487void
488aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489 SV * fh
490 UV offset
491 IV length
492 SV * callback
493 PROTOTYPE: $$$;$
494 CODE:
495{
496 aio_req req;
497
498 if (length < 0)
499 croak ("length must not be negative");
500
501 Newz (0, req, 1, aio_cb);
502
503 if (!req)
504 croak ("out of memory during aio_req allocation");
505
506 req->type = REQ_READAHEAD;
507 req->fh = newSVsv (fh);
508 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
509 req->offset = offset;
510 req->length = length;
511 req->callback = SvREFCNT_inc (callback);
512
513 send_req (req);
514}
515
516void
517aio_stat(fh_or_path,callback=&PL_sv_undef)
518 SV * fh_or_path
519 SV * callback
520 ALIAS:
521 aio_stat = REQ_STAT
522 aio_lstat = REQ_LSTAT
523 CODE:
524{
525 aio_req req;
526
527 Newz (0, req, 1, aio_cb);
528
529 if (!req)
530 croak ("out of memory during aio_req allocation");
531
532 New (0, req->statdata, 1, Stat_t);
533
534 if (!req->statdata)
535 croak ("out of memory during aio_req->statdata allocation");
536
537 if (SvPOK (fh_or_path))
538 {
539 req->type = ix;
540 req->data = newSVsv (fh_or_path);
541 req->dataptr = SvPV_nolen (req->data);
542 }
543 else
544 {
545 req->type = REQ_FSTAT;
546 req->fh = newSVsv (fh_or_path);
547 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548 }
549
550 req->callback = SvREFCNT_inc (callback);
551
552 send_req (req);
553}
554
555void
556aio_unlink(pathname,callback=&PL_sv_undef)
557 SV * pathname
558 SV * callback
559 CODE:
560{
561 aio_req req;
562
563 Newz (0, req, 1, aio_cb);
564
565 if (!req)
566 croak ("out of memory during aio_req allocation");
567
568 req->type = REQ_UNLINK;
569 req->data = newSVsv (pathname);
570 req->dataptr = SvPV_nolen (req->data);
571 req->callback = SvREFCNT_inc (callback);
572
573 send_req (req);
574}
575
576void
577flush()
578 PROTOTYPE:
579 CODE:
580 while (nreqs)
581 {
582 poll_wait ();
583 poll_cb ();
584 }
585
586void
587poll() 1276poll()
588 PROTOTYPE: 1277 PROTOTYPE:
589 CODE: 1278 CODE:
590 if (nreqs)
591 {
592 poll_wait (); 1279 poll_wait ();
593 poll_cb (); 1280 RETVAL = poll_cb ();
594 } 1281 OUTPUT:
1282 RETVAL
595 1283
596int 1284int
597poll_fileno() 1285poll_fileno()
598 PROTOTYPE: 1286 PROTOTYPE:
599 CODE: 1287 CODE:
600 RETVAL = respipe [0]; 1288 RETVAL = s_epipe_fd (&respipe);
601 OUTPUT: 1289 OUTPUT:
602 RETVAL 1290 RETVAL
603 1291
604int 1292int
605poll_cb(...) 1293poll_cb(...)
… …
611 1299
612void 1300void
613poll_wait() 1301poll_wait()
614 PROTOTYPE: 1302 PROTOTYPE:
615 CODE: 1303 CODE:
616 if (nreqs)
617 poll_wait (); 1304 poll_wait ();
618 1305
619int 1306int
620nreqs() 1307nreqs()
621 PROTOTYPE: 1308 PROTOTYPE:
622 CODE: 1309 CODE:
623 RETVAL = nreqs; 1310 RETVAL = eio_nreqs ();
624 OUTPUT: 1311 OUTPUT:
625 RETVAL 1312 RETVAL
626 1313
1314int
1315nready()
1316 PROTOTYPE:
1317 CODE:
1318 RETVAL = eio_nready ();
1319 OUTPUT:
1320 RETVAL
1321
1322int
1323npending()
1324 PROTOTYPE:
1325 CODE:
1326 RETVAL = eio_npending ();
1327 OUTPUT:
1328 RETVAL
1329
1330int
1331nthreads()
1332 PROTOTYPE:
1333 CODE:
1334 RETVAL = eio_nthreads ();
1335 OUTPUT:
1336 RETVAL
1337
1338int
1339fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1340 PROTOTYPE: $$$$
1341 CODE:
1342#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1343 RETVAL = posix_fadvise (fh, offset, length, advice);
1344#else
1345 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1346#endif
1347 OUTPUT:
1348 RETVAL
1349
1350ssize_t
1351sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1352 PROTOTYPE: $$$$
1353 CODE:
1354 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1355 OUTPUT:
1356 RETVAL
1357
1358void
1359mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1360 PROTOTYPE: $$$$$;$
1361 PPCODE:
1362 sv_unmagic (scalar, MMAP_MAGIC);
1363{
1364 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1365 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1366 if (addr == (void *)-1)
1367 XSRETURN_NO;
1368
1369 /* we store the length in mg_obj, as namlen is I32 :/ */
1370 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1371 ->mg_obj = (SV *)length;
1372
1373 SvUPGRADE (scalar, SVt_PV); /* nop... */
1374 if (!(prot & PROT_WRITE))
1375 SvREADONLY_on (scalar);
1376
1377 SvPVX (scalar) = (char *)addr;
1378 SvCUR_set (scalar, length);
1379 SvLEN_set (scalar, 0);
1380 SvPOK_only (scalar);
1381
1382 XSRETURN_YES;
1383}
1384
1385void
1386munmap (SV *scalar)
1387 PROTOTYPE: $
1388 CODE:
1389 sv_unmagic (scalar, MMAP_MAGIC);
1390
1391int
1392mlockall (int flags)
1393 PROTOTYPE: $
1394 CODE:
1395#if _POSIX_MEMLOCK
1396#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1397 extern int mallopt (int, int);
1398 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1399#endif
1400 mlockall (flags);
1401#else
1402 RETVAL = -1;
1403 errno = ENOSYS;
1404#endif
1405 OUTPUT:
1406 RETVAL
1407
1408int
1409munlockall ()
1410 PROTOTYPE:
1411 CODE:
1412#if _POSIX_MEMLOCK
1413 munlockall ();
1414#else
1415 RETVAL = -1;
1416 errno = ENOSYS;
1417#endif
1418 OUTPUT:
1419 RETVAL
1420
1421void _on_next_submit (SV *cb)
1422 CODE:
1423 SvREFCNT_dec (on_next_submit);
1424 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1425
1426PROTOTYPES: DISABLE
1427
1428MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1429
1430void
1431cancel (aio_req_ornot req)
1432 CODE:
1433 eio_cancel (req);
1434
1435void
1436cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1437 PPCODE:
1438{
1439 if (GIMME_V != G_VOID)
1440 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1441
1442 if (items > 1)
1443 {
1444 SV *cb_cv =get_cb (callback);
1445
1446 SvREFCNT_dec (req->callback);
1447 req->callback = SvREFCNT_inc (cb_cv);
1448 }
1449}
1450
1451MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1452
1453void
1454add (aio_req grp, ...)
1455 PPCODE:
1456{
1457 int i;
1458
1459 if (grp->int1 == 2)
1460 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1461
1462 for (i = 1; i < items; ++i )
1463 {
1464 aio_req req;
1465
1466 if (GIMME_V != G_VOID)
1467 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1468
1469 req = SvAIO_REQ (ST (i));
1470
1471 if (req)
1472 eio_grp_add (grp, req);
1473 }
1474}
1475
1476void
1477cancel_subs (aio_req_ornot req)
1478 CODE:
1479 req_cancel_subs (req);
1480
1481void
1482result (aio_req grp, ...)
1483 CODE:
1484{
1485 int i;
1486 AV *av;
1487
1488 grp->errorno = errno;
1489
1490 av = newAV ();
1491 av_extend (av, items - 1);
1492
1493 for (i = 1; i < items; ++i )
1494 av_push (av, newSVsv (ST (i)));
1495
1496 SvREFCNT_dec (grp->sv1);
1497 grp->sv1 = (SV *)av;
1498}
1499
1500void
1501errno (aio_req grp, int errorno = errno)
1502 CODE:
1503 grp->errorno = errorno;
1504
1505void
1506limit (aio_req grp, int limit)
1507 CODE:
1508 eio_grp_limit (grp, limit);
1509
1510void
1511feed (aio_req grp, SV *callback=&PL_sv_undef)
1512 CODE:
1513{
1514 SvREFCNT_dec (grp->sv2);
1515 grp->sv2 = newSVsv (callback);
1516 grp->feed = aio_grp_feed;
1517
1518 if (grp->int2 <= 0)
1519 grp->int2 = 2;
1520
1521 eio_grp_limit (grp, grp->int2);
1522}
1523

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