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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 1.171 by root, Wed Aug 4 17:16:19 2010 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 "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>
16#include <sys/statvfs.h>
9#include <unistd.h> 17#include <limits.h>
10#include <fcntl.h> 18#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 19#include <sched.h>
13#include <endian.h>
14 20
15#include <pthread.h> 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
16#include <sys/syscall.h> 22# include <sys/mman.h>
23#endif
17 24
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25/* perl namespace pollution */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26#undef VERSION
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 27
22#if __i386 || __amd64 28#ifdef _WIN32
23# define STACKSIZE ( 256 * sizeof (long)) 29
24#elif __ia64 30# define EIO_STRUCT_DIRENT Direntry_t
25# define STACKSIZE (8192 * sizeof (long)) 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 ( 512 * sizeof (long)) 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#if _XOPEN_SOURCE < 600 || NO_FADVISE
146# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
147#endif
148
149#ifndef POSIX_MADV_NORMAL
150# define POSIX_MADV_NORMAL 0
151# define NO_MADVISE 1
152#endif
153#ifndef POSIX_MADV_SEQUENTIAL
154# define POSIX_MADV_SEQUENTIAL 0
155#endif
156#ifndef POSIX_MADV_RANDOM
157# define POSIX_MADV_RANDOM 0
158#endif
159#ifndef POSIX_MADV_WILLNEED
160# define POSIX_MADV_WILLNEED 0
161#endif
162#ifndef POSIX_MADV_DONTNEED
163# define POSIX_MADV_DONTNEED 0
164#endif
165
166#if _XOPEN_SOURCE < 600 || NO_MADVISE
167# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
168#endif
169
170#ifndef PROT_NONE
171# define PROT_NONE 0
172#endif
173#ifndef PROT_READ
174# define PROT_READ 0
175#endif
176#ifndef PROT_WRITE
177# define PROT_READ 0
178#endif
179#ifndef PROT_EXEC
180# define PROT_EXEC 0
181#endif
182
183#ifndef ST_NODEV
184# define ST_NODEV 0
185#endif
186#ifndef ST_NOEXEC
187# define ST_NOEXEC 0
188#endif
189#ifndef ST_SYNCHRONOUS
190# define ST_SYNCHRONOUS 0
191#endif
192#ifndef ST_MANDLOCK
193# define ST_MANDLOCK 0
194#endif
195#ifndef ST_WRITE
196# define ST_WRITE 0
197#endif
198#ifndef ST_APPEND
199# define ST_APPEND 0
200#endif
201#ifndef ST_IMMUTABLE
202# define ST_IMMUTABLE 0
203#endif
204#ifndef ST_NOATIME
205# define ST_NOATIME 0
206#endif
207#ifndef ST_NODIRATIME
208# define ST_NODIRATIME 0
209#endif
210#ifndef ST_RELATIME
211# define ST_RELATIME 0
212#endif
213
214#ifndef MCL_CURRENT
215# define MCL_CURRENT 0
216#endif
217#ifndef MCL_FUTURE
218# define MCL_FUTURE 0
219#endif
220
221#ifndef MAP_ANONYMOUS
222# ifdef MAP_ANON
223# define MAP_ANONYMOUS MAP_ANON
224# else
225# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 226# endif
227#endif
228#ifndef MAP_HUGETLB
229# define MAP_HUGETLB 0
230#endif
231#ifndef MAP_LOCKED
232# define MAP_LOCKED 0
233#endif
234#ifndef MAP_NORESERVE
235# define MAP_NORESERVE 0
236#endif
237#ifndef MAP_POPULATE
238# define MAP_POPULATE 0
239#endif
240#ifndef MAP_NONBLOCK
241# define MAP_NONBLOCK 0
242#endif
243
244#ifndef PAGESIZE
245# define PAGESIZE sysconf (_SC_PAGESIZE)
246#endif
247
248static int req_invoke (eio_req *req);
249#define EIO_FINISH(req) req_invoke (req)
250static void req_destroy (eio_req *grp);
251#define EIO_DESTROY(req) req_destroy (req)
29 252
30enum { 253enum {
31 REQ_QUIT, 254 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}; 255};
37 256
38typedef struct aio_cb { 257#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 258
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; 259typedef eio_req *aio_req;
260typedef eio_req *aio_req_ornot;
57 261
58static int started; 262static SV *on_next_submit;
59static int nreqs; 263static int next_pri = EIO_PRI_DEFAULT;
60static int respipe [2]; 264static int max_outstanding;
61 265
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 266static s_epipe respipe;
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 267
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 268static void req_destroy (aio_req req);
67static volatile aio_req ress, rese; /* queue start, queue end */ 269static void req_cancel (aio_req req);
68 270
69static void *aio_proc(void *arg); 271static void want_poll (void)
70
71static void
72start_thread (void)
73{ 272{
74 sigset_t fullsigset, oldsigset; 273 /* write a dummy byte to the pipe so fh becomes ready */
75 pthread_t tid; 274 s_epipe_signal (&respipe);
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} 275}
90 276
91static void 277static void done_poll (void)
92send_req (aio_req req)
93{ 278{
94 nreqs++; 279 /* read any signals sent by the worker threads */
280 s_epipe_drain (&respipe);
281}
95 282
96 pthread_mutex_lock (&reqlock); 283/* must be called at most once */
97 284static SV *req_sv (aio_req req, HV *stash)
98 req->next = 0; 285{
99
100 if (reqe) 286 if (!req->self)
101 { 287 {
102 reqe->next = req; 288 req->self = (SV *)newHV ();
103 reqe = req; 289 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
104 } 290 }
105 else
106 reqe = reqs = req;
107 291
108 pthread_cond_signal (&reqwait); 292 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
109 pthread_mutex_unlock (&reqlock);
110} 293}
111 294
112static void 295static aio_req SvAIO_REQ (SV *sv)
113end_thread (void)
114{ 296{
115 aio_req req; 297 MAGIC *mg;
116 New (0, req, 1, aio_cb);
117 req->type = REQ_QUIT;
118 298
119 send_req (req); 299 if (!SvROK (sv)
120} 300 || (SvSTASH (SvRV (sv)) != aio_grp_stash
301 && SvSTASH (SvRV (sv)) != aio_req_stash
302 && !sv_derived_from (sv, "IO::AIO::REQ")))
303 croak ("object of class IO::AIO::REQ expected");
121 304
122static void 305 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);
130 306
131 SvUPGRADE (data, SVt_PV); 307 return mg ? (aio_req)mg->mg_ptr : 0;
132 SvPOK_on (data); 308}
133 309
134 if (dataoffset < 0) 310static void aio_grp_feed (aio_req grp)
135 dataoffset += svlen; 311{
136 312 if (grp->sv2 && SvOK (grp->sv2))
137 if (dataoffset < 0 || dataoffset > svlen)
138 croak ("data offset outside of string");
139
140 if (dowrite)
141 { 313 {
142 /* write: check length and adjust. */ 314 dSP;
143 if (length < 0 || length + dataoffset > svlen) 315
144 length = svlen - dataoffset; 316 ENTER;
317 SAVETMPS;
318 PUSHMARK (SP);
319 XPUSHs (req_sv (grp, aio_grp_stash));
320 PUTBACK;
321 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
322 SPAGAIN;
323 FREETMPS;
324 LEAVE;
145 } 325 }
146 else 326}
327
328static void req_submit (eio_req *req)
329{
330 eio_submit (req);
331
332 if (expect_false (on_next_submit))
147 { 333 {
148 /* read: grow scalar as necessary */ 334 dSP;
149 svptr = SvGROW (data, length + dataoffset); 335 SV *cb = sv_2mortal (on_next_submit);
336
337 on_next_submit = 0;
338
339 PUSHMARK (SP);
340 PUTBACK;
341 call_sv (cb, G_DISCARD | G_EVAL);
150 } 342 }
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} 343}
170 344
171static void 345static int req_invoke (eio_req *req)
172poll_wait ()
173{ 346{
174 if (!nreqs) 347 if (req->flags & FLAG_SV2_RO_OFF)
175 return; 348 SvREADONLY_off (req->sv2);
176 349
177 fd_set rfd; 350 if (!EIO_CANCELLED (req) && req->callback)
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{
187 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
198 for (;;)
199 { 351 {
200 pthread_mutex_lock (&reslock); 352 dSP;
353 static SV *sv_result_cache; /* caches the result integer SV */
354 SV *sv_result;
201 355
202 req = ress; 356 ENTER;
357 SAVETMPS;
358 PUSHMARK (SP);
359 EXTEND (SP, 1);
203 360
204 if (ress) 361 /* do not recreate the result IV from scratch each time */
362 if (expect_true (sv_result_cache))
205 { 363 {
206 ress = ress->next; 364 sv_result = sv_result_cache; sv_result_cache = 0;
207 if (!ress) rese = 0; 365 SvIV_set (sv_result, req->result);
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 {
233 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234 PL_laststatval = req->result;
235 PL_statcache = *(req->statdata);
236
237 Safefree (req->statdata);
238 }
239
240 PUSHMARK (SP);
241 XPUSHs (sv_2mortal (newSViv (req->result)));
242
243 if (req->type == REQ_OPEN)
244 {
245 /* convert fd to fh */
246 SV *fh;
247
248 PUTBACK;
249 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
250 SPAGAIN;
251
252 fh = POPs;
253
254 PUSHMARK (SP);
255 XPUSHs (fh);
256 }
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;
297
298 pthread_cond_wait (&reqwait, &reqlock);
299 }
300
301 pthread_mutex_unlock (&reqlock);
302
303 errno = 0; /* strictly unnecessary */
304
305 type = req->type;
306
307 switch (type)
308 {
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
310 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
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
317 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320
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;
330
331 default:
332 req->result = ENOSYS;
333 break;
334 }
335
336 req->errorno = errno;
337
338 pthread_mutex_lock (&reslock);
339
340 req->next = 0;
341
342 if (rese)
343 {
344 rese->next = req;
345 rese = req;
346 } 366 }
347 else 367 else
348 { 368 {
349 rese = ress = req; 369 sv_result = newSViv (req->result);
350 370 SvREADONLY_on (sv_result);
351 /* write a dummy byte to the pipe so fh becomes ready */
352 write (respipe [1], &respipe, 1);
353 } 371 }
354 372
355 pthread_mutex_unlock (&reslock); 373 switch (req->type)
374 {
375 case EIO_READDIR:
376 {
377 SV *rv = &PL_sv_undef;
378
379 if (req->result >= 0)
380 {
381 int i;
382 char *names = (char *)req->ptr2;
383 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
384 AV *av = newAV ();
385
386 av_extend (av, req->result - 1);
387
388 for (i = 0; i < req->result; ++i)
389 {
390 if (req->int1 & EIO_READDIR_DENTS)
391 {
392 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
393
394 if (req->int1 & EIO_READDIR_CUSTOM2)
395 {
396 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
397 AV *avent = newAV ();
398
399 av_extend (avent, 2);
400
401 if (!sv_type [ent->type])
402 {
403 sv_type [ent->type] = newSViv (ent->type);
404 SvREADONLY_on (sv_type [ent->type]);
405 }
406
407 av_store (avent, 0, namesv);
408 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
409 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
410
411 av_store (av, i, newRV_noinc ((SV *)avent));
412 }
413 else
414 av_store (av, i, namesv);
415
416 ++ent;
417 }
418 else
419 {
420 SV *name = newSVpv (names, 0);
421 av_store (av, i, name);
422 names += SvCUR (name) + 1;
423 }
424 }
425
426 rv = sv_2mortal (newRV_noinc ((SV *)av));
427 }
428
429 PUSHs (rv);
430
431 if (req->int1 & EIO_READDIR_CUSTOM1)
432 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
433 }
434 break;
435
436 case EIO_OPEN:
437 {
438 /* convert fd to fh */
439 SV *fh = &PL_sv_undef;
440
441 if (req->result >= 0)
442 {
443 GV *gv = (GV *)sv_newmortal ();
444 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
445 char sym [64];
446 int symlen;
447
448 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
449 gv_init (gv, aio_stash, sym, symlen, 0);
450
451 symlen = snprintf (
452 sym,
453 sizeof (sym),
454 "%s&=%d",
455 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
456 (int)req->result
457 );
458
459 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
460 fh = (SV *)gv;
461 }
462
463 PUSHs (fh);
464 }
465 break;
466
467 case EIO_STATVFS:
468 case EIO_FSTATVFS:
469 {
470 SV *rv = &PL_sv_undef;
471
472 if (req->result >= 0)
473 {
474 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
475 HV *hv = newHV ();
476
477 rv = sv_2mortal (newRV_noinc ((SV *)hv));
478
479 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
480 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
481 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
482 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
483 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
484 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
485 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
486 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
487 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
488 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
489 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
490 }
491
492 PUSHs (rv);
493 }
494
495 break;
496
497 case EIO_GROUP:
498 req->int1 = 2; /* mark group as finished */
499
500 if (req->sv1)
501 {
502 int i;
503 AV *av = (AV *)req->sv1;
504
505 EXTEND (SP, AvFILL (av) + 1);
506 for (i = 0; i <= AvFILL (av); ++i)
507 PUSHs (*av_fetch (av, i, 0));
508 }
509 break;
510
511 case EIO_NOP:
512 case EIO_BUSY:
513 break;
514
515 case EIO_READLINK:
516 if (req->result > 0)
517 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
518 break;
519
520 case EIO_STAT:
521 case EIO_LSTAT:
522 case EIO_FSTAT:
523 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
524 PL_laststatval = req->result;
525 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
526 PUSHs (sv_result);
527 break;
528
529 case EIO_READ:
530 {
531 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
532 *SvEND (req->sv2) = 0;
533 SvPOK_only (req->sv2);
534 SvSETMAGIC (req->sv2);
535 PUSHs (sv_result);
536 }
537 break;
538
539 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
540 if (req->result > 0)
541 SvIV_set (sv_result, 0);
542 /* FALLTHROUGH */
543
544 default:
545 PUSHs (sv_result);
546 break;
547 }
548
549 errno = req->errorno;
550
551 PUTBACK;
552 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
553 SPAGAIN;
554
555 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
556 SvREFCNT_dec (sv_result);
557 else
558 sv_result_cache = sv_result;
559
560 FREETMPS;
561 LEAVE;
562
563 PUTBACK;
356 } 564 }
357 while (type != REQ_QUIT); 565
566 return !!SvTRUE (ERRSV);
567}
568
569static void req_destroy (aio_req req)
570{
571 if (req->self)
572 {
573 sv_unmagic (req->self, PERL_MAGIC_ext);
574 SvREFCNT_dec (req->self);
575 }
576
577 SvREFCNT_dec (req->sv1);
578 SvREFCNT_dec (req->sv2);
579 SvREFCNT_dec (req->callback);
580
581 Safefree (req);
582}
583
584static void req_cancel_subs (aio_req grp)
585{
586 aio_req sub;
587
588 if (grp->type != EIO_GROUP)
589 return;
590
591 SvREFCNT_dec (grp->sv2);
592 grp->sv2 = 0;
593
594 eio_grp_cancel (grp);
595}
596
597static void
598create_respipe (void)
599{
600 if (s_epipe_renew (&respipe))
601 croak ("IO::AIO: unable to initialize result pipe");
602}
603
604static void poll_wait (void)
605{
606 while (eio_nreqs ())
607 {
608 int size;
609
610 X_LOCK (reslock);
611 size = res_queue.size;
612 X_UNLOCK (reslock);
613
614 if (size)
615 return;
616
617 etp_maybe_start_thread ();
618
619 s_epipe_wait (&respipe);
620 }
621}
622
623static int poll_cb (void)
624{
625 for (;;)
626 {
627 int res = eio_poll ();
628
629 if (res > 0)
630 croak (0);
631
632 if (!max_outstanding || max_outstanding > eio_nreqs ())
633 return res;
634
635 poll_wait ();
636 }
637}
638
639static void atfork_child (void)
640{
641 create_respipe ();
642}
643
644/*****************************************************************************/
645
646#if !_POSIX_MAPPED_FILES
647# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
648# define munmap(addr,length) (errno = ENOSYS, -1)
649# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
650#endif
651
652#define MMAP_MAGIC PERL_MAGIC_ext
653
654static int
655mmap_free (pTHX_ SV *sv, MAGIC *mg)
656{
657 int old_errno = errno;
658 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
659 errno = old_errno;
660
661 mg->mg_obj = 0; /* just in case */
662
663 SvREADONLY_off (sv);
664
665 if (SvPVX (sv) != mg->mg_ptr)
666 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
667
668 SvCUR_set (sv, 0);
669 SvPVX (sv) = 0;
670 SvOK_off (sv);
358 671
359 return 0; 672 return 0;
360} 673}
361 674
675static MGVTBL mmap_vtbl = {
676 0, 0, 0, 0, mmap_free
677};
678
679/*****************************************************************************/
680
681static SV *
682get_cb (SV *cb_sv)
683{
684 SvGETMAGIC (cb_sv);
685 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
686}
687
688#define dREQ \
689 SV *cb_cv; \
690 aio_req req; \
691 int req_pri = next_pri; \
692 next_pri = EIO_PRI_DEFAULT; \
693 \
694 cb_cv = get_cb (callback); \
695 \
696 Newz (0, req, 1, eio_req); \
697 if (!req) \
698 croak ("out of memory during eio_req allocation"); \
699 \
700 req->callback = SvREFCNT_inc (cb_cv); \
701 req->pri = req_pri
702
703#define REQ_SEND \
704 PUTBACK; \
705 req_submit (req); \
706 SPAGAIN; \
707 \
708 if (GIMME_V != G_VOID) \
709 XPUSHs (req_sv (req, aio_req_stash));
710
362MODULE = IO::AIO PACKAGE = IO::AIO 711MODULE = IO::AIO PACKAGE = IO::AIO
363 712
713PROTOTYPES: ENABLE
714
364BOOT: 715BOOT:
365{ 716{
366 if (pipe (respipe)) 717 static const struct {
367 croak ("unable to initialize result pipe"); 718 const char *name;
719 IV iv;
720 } *civ, const_iv[] = {
721# define const_niv(name, value) { # name, (IV) value },
722# define const_iv(name) { # name, (IV) name },
723# define const_eio(name) { # name, (IV) EIO_ ## name },
724 const_iv (EXDEV)
725 const_iv (ENOSYS)
726 const_iv (O_RDONLY)
727 const_iv (O_WRONLY)
728 const_iv (O_RDWR)
729 const_iv (O_CREAT)
730 const_iv (O_TRUNC)
731 const_iv (O_EXCL)
732 const_iv (O_APPEND)
733#ifndef _WIN32
734 const_iv (S_IFIFO)
735#endif
736 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
737 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
738 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
739 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
740 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
741 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
368 742
369 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 743 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
370 croak ("cannot set result pipe to nonblocking mode"); 744 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
745 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
746 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
747 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
371 748
372 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 749 const_iv (ST_RDONLY)
373 croak ("cannot set result pipe to nonblocking mode"); 750 const_iv (ST_NOSUID)
374} 751 const_iv (ST_NODEV)
752 const_iv (ST_NOEXEC)
753 const_iv (ST_SYNCHRONOUS)
754 const_iv (ST_MANDLOCK)
755 const_iv (ST_WRITE)
756 const_iv (ST_APPEND)
757 const_iv (ST_IMMUTABLE)
758 const_iv (ST_NOATIME)
759 const_iv (ST_NODIRATIME)
760 const_iv (ST_RELATIME)
375 761
762 const_iv (PROT_NONE)
763 const_iv (PROT_EXEC)
764 const_iv (PROT_READ)
765 const_iv (PROT_WRITE)
766
767 /*const_iv (MAP_FIXED)*/
768 const_iv (MAP_PRIVATE)
769 const_iv (MAP_SHARED)
770 const_iv (MAP_ANONYMOUS)
771
772 /* linuxish */
773 const_iv (MAP_HUGETLB)
774 const_iv (MAP_LOCKED)
775 const_iv (MAP_NORESERVE)
776 const_iv (MAP_POPULATE)
777 const_iv (MAP_NONBLOCK)
778
779 const_iv (MCL_FUTURE)
780 const_iv (MCL_CURRENT)
781
782 const_eio (MS_ASYNC)
783 const_eio (MS_INVALIDATE)
784 const_eio (MS_SYNC)
785
786 const_eio (MT_MODIFY)
787
788 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
789 const_eio (SYNC_FILE_RANGE_WRITE)
790 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
791
792 const_eio (READDIR_DENTS)
793 const_eio (READDIR_DIRS_FIRST)
794 const_eio (READDIR_STAT_ORDER)
795 const_eio (READDIR_FOUND_UNKNOWN)
796
797 const_eio (DT_UNKNOWN)
798 const_eio (DT_FIFO)
799 const_eio (DT_CHR)
800 const_eio (DT_DIR)
801 const_eio (DT_BLK)
802 const_eio (DT_REG)
803 const_eio (DT_LNK)
804 const_eio (DT_SOCK)
805 const_eio (DT_WHT)
806 };
807
808 aio_stash = gv_stashpv ("IO::AIO" , 1);
809 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
810 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
811
812 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
813 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
814
815 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
816
817 create_respipe ();
818
819 if (eio_init (want_poll, done_poll) < 0)
820 croak ("IO::AIO: unable to initialise eio library");
821
822 /* atfork child called in fifo order, so before eio's handler */
823 X_THREAD_ATFORK (0, 0, atfork_child);
824}
825
376void 826void
377min_parallel(nthreads) 827max_poll_reqs (int nreqs)
378 int nthreads
379 PROTOTYPE: $ 828 PROTOTYPE: $
380 CODE: 829 CODE:
381 while (nthreads > started) 830 eio_set_max_poll_reqs (nreqs);
382 start_thread ();
383 831
384void 832void
385max_parallel(nthreads) 833max_poll_time (double nseconds)
386 int nthreads
387 PROTOTYPE: $ 834 PROTOTYPE: $
388 CODE: 835 CODE:
836 eio_set_max_poll_time (nseconds);
837
838void
839min_parallel (int nthreads)
840 PROTOTYPE: $
841 CODE:
842 eio_set_min_parallel (nthreads);
843
844void
845max_parallel (int nthreads)
846 PROTOTYPE: $
847 CODE:
848 eio_set_max_parallel (nthreads);
849
850void
851max_idle (int nthreads)
852 PROTOTYPE: $
853 CODE:
854 eio_set_max_idle (nthreads);
855
856void
857max_outstanding (int maxreqs)
858 PROTOTYPE: $
859 CODE:
860 max_outstanding = maxreqs;
861
862void
863aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
864 PROTOTYPE: $$$;$
865 PPCODE:
389{ 866{
390 int cur = started; 867 dREQ;
391 while (cur > nthreads) 868
392 { 869 req->type = EIO_OPEN;
393 end_thread (); 870 req->sv1 = newSVsv (pathname);
394 cur--; 871 req->ptr1 = SvPVbyte_nolen (req->sv1);
872 req->int1 = flags;
873 req->int2 = mode;
874
875 REQ_SEND;
876}
877
878void
879aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
880 PROTOTYPE: $;$
881 ALIAS:
882 aio_fsync = EIO_FSYNC
883 aio_fdatasync = EIO_FDATASYNC
884 PPCODE:
885{
886 int fd = s_fileno_croak (fh, 0);
887 dREQ;
888
889 req->type = ix;
890 req->sv1 = newSVsv (fh);
891 req->int1 = fd;
892
893 REQ_SEND (req);
894}
895
896void
897aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
898 PROTOTYPE: $$$$;$
899 PPCODE:
900{
901 int fd = s_fileno_croak (fh, 0);
902 dREQ;
903
904 req->type = EIO_SYNC_FILE_RANGE;
905 req->sv1 = newSVsv (fh);
906 req->int1 = fd;
907 req->offs = offset;
908 req->size = nbytes;
909 req->int2 = flags;
910
911 REQ_SEND (req);
912}
913
914void
915aio_close (SV *fh, SV *callback=&PL_sv_undef)
916 PROTOTYPE: $;$
917 PPCODE:
918{
919 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
920 int fd = s_fileno_croak (fh, 0);
921 dREQ;
922
923 if (close_pipe < 0)
924 {
925 int pipefd [2];
926
927 if (pipe (pipefd) < 0
928 || close (pipefd [1]) < 0
929 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
930 abort (); /*D*/
931
932 close_pipe = pipefd [0];
395 } 933 }
396 934
397 while (started > nthreads) 935 req->type = EIO_DUP2;
936 req->int1 = close_pipe;
937 req->sv2 = newSVsv (fh);
938 req->int2 = fd;
939
940 REQ_SEND (req);
941}
942
943void
944aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
945 ALIAS:
946 aio_read = EIO_READ
947 aio_write = EIO_WRITE
948 PROTOTYPE: $$$$$;$
949 PPCODE:
950{
951 STRLEN svlen;
952 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
953 char *svptr = SvPVbyte (data, svlen);
954 UV len = SvUV (length);
955
956 if (dataoffset < 0)
957 dataoffset += svlen;
958
959 if (dataoffset < 0 || dataoffset > svlen)
960 croak ("dataoffset outside of data scalar");
961
962 if (ix == EIO_WRITE)
398 { 963 {
399 poll_wait (); 964 /* write: check length and adjust. */
400 poll_cb (aTHX); 965 if (!SvOK (length) || len + dataoffset > svlen)
401 } 966 len = svlen - dataoffset;
402}
403
404void
405aio_open(pathname,flags,mode,callback)
406 SV * pathname
407 int flags
408 int mode
409 SV * callback
410 PROTOTYPE: $$$$
411 CODE:
412{
413 aio_req req;
414
415 Newz (0, req, 1, aio_cb);
416
417 if (!req)
418 croak ("out of memory during aio_req allocation");
419
420 req->type = REQ_OPEN;
421 req->data = newSVsv (pathname);
422 req->dataptr = SvPV_nolen (req->data);
423 req->fd = flags;
424 req->mode = mode;
425 req->callback = SvREFCNT_inc (callback);
426
427 send_req (req);
428}
429
430void
431aio_close(fh,callback)
432 InputStream fh
433 SV * callback
434 PROTOTYPE: $$
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 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT;
531 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data);
533 } 967 }
534 else 968 else
535 { 969 {
536 req->type = REQ_FSTAT; 970 /* read: check type and grow scalar as necessary */
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 971 SvUPGRADE (data, SVt_PV);
972 svptr = SvGROW (data, len + dataoffset + 1);
538 } 973 }
539 974
975 {
976 dREQ;
977
978 req->type = ix;
979 req->sv1 = newSVsv (fh);
980 req->int1 = fd;
981 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
982 req->size = len;
540 req->callback = SvREFCNT_inc (callback); 983 req->sv2 = SvREFCNT_inc (data);
984 req->ptr2 = (char *)svptr + dataoffset;
985 req->stroffset = dataoffset;
541 986
542 send_req (req); 987 if (!SvREADONLY (data))
543} 988 {
989 SvREADONLY_on (data);
990 req->flags |= FLAG_SV2_RO_OFF;
991 }
544 992
993 REQ_SEND;
994 }
995}
996
545void 997void
546aio_unlink(pathname,callback) 998aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
547 SV * pathname
548 SV * callback
549 PROTOTYPE: $$ 999 PROTOTYPE: $$;$
1000 PPCODE:
1001{
1002 SV *data;
1003 dREQ;
1004
1005 req->type = EIO_READLINK;
1006 req->sv1 = newSVsv (path);
1007 req->ptr1 = SvPVbyte_nolen (req->sv1);
1008
1009 REQ_SEND;
1010}
1011
1012void
1013aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1014 PROTOTYPE: $$$$;$
1015 PPCODE:
1016{
1017 int ifd = s_fileno_croak (in_fh , 0);
1018 int ofd = s_fileno_croak (out_fh, 1);
1019 dREQ;
1020
1021 req->type = EIO_SENDFILE;
1022 req->sv1 = newSVsv (out_fh);
1023 req->int1 = ofd;
1024 req->sv2 = newSVsv (in_fh);
1025 req->int2 = ifd;
1026 req->offs = in_offset;
1027 req->size = length;
1028
1029 REQ_SEND;
1030}
1031
1032void
1033aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1034 PROTOTYPE: $$$;$
1035 PPCODE:
1036{
1037 int fd = s_fileno_croak (fh, 0);
1038 dREQ;
1039
1040 req->type = EIO_READAHEAD;
1041 req->sv1 = newSVsv (fh);
1042 req->int1 = fd;
1043 req->offs = offset;
1044 req->size = length;
1045
1046 REQ_SEND;
1047}
1048
1049void
1050aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1051 ALIAS:
1052 aio_stat = EIO_STAT
1053 aio_lstat = EIO_LSTAT
1054 aio_statvfs = EIO_STATVFS
1055 PPCODE:
1056{
1057 dREQ;
1058
1059 req->sv1 = newSVsv (fh_or_path);
1060
1061 if (SvPOK (req->sv1))
1062 {
1063 req->type = ix;
1064 req->ptr1 = SvPVbyte_nolen (req->sv1);
1065 }
1066 else
1067 {
1068 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1069 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1070 }
1071
1072 REQ_SEND;
1073}
1074
1075void
1076aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1077 PPCODE:
1078{
1079 dREQ;
1080
1081 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1082 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1083 req->sv1 = newSVsv (fh_or_path);
1084
1085 if (SvPOK (req->sv1))
1086 {
1087 req->type = EIO_UTIME;
1088 req->ptr1 = SvPVbyte_nolen (req->sv1);
1089 }
1090 else
1091 {
1092 req->type = EIO_FUTIME;
1093 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1094 }
1095
1096 REQ_SEND;
1097}
1098
1099void
1100aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1101 PPCODE:
1102{
1103 dREQ;
1104
1105 req->sv1 = newSVsv (fh_or_path);
1106 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1107
1108 if (SvPOK (req->sv1))
1109 {
1110 req->type = EIO_TRUNCATE;
1111 req->ptr1 = SvPVbyte_nolen (req->sv1);
1112 }
1113 else
1114 {
1115 req->type = EIO_FTRUNCATE;
1116 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1117 }
1118
1119 REQ_SEND;
1120}
1121
1122void
1123aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1124 ALIAS:
1125 aio_chmod = EIO_CHMOD
1126 aio_mkdir = EIO_MKDIR
1127 PPCODE:
1128{
1129 dREQ;
1130
1131 req->int2 = mode;
1132 req->sv1 = newSVsv (fh_or_path);
1133
1134 if (SvPOK (req->sv1))
1135 {
1136 req->type = ix;
1137 req->ptr1 = SvPVbyte_nolen (req->sv1);
1138 }
1139 else
1140 {
1141 req->type = EIO_FCHMOD;
1142 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1143 }
1144
1145 REQ_SEND;
1146}
1147
1148void
1149aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1150 PPCODE:
1151{
1152 dREQ;
1153
1154 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1155 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1156 req->sv1 = newSVsv (fh_or_path);
1157
1158 if (SvPOK (req->sv1))
1159 {
1160 req->type = EIO_CHOWN;
1161 req->ptr1 = SvPVbyte_nolen (req->sv1);
1162 }
1163 else
1164 {
1165 req->type = EIO_FCHOWN;
1166 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1167 }
1168
1169 REQ_SEND;
1170}
1171
1172void
1173aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1174 PPCODE:
1175{
1176 dREQ;
1177
1178 req->type = EIO_READDIR;
1179 req->sv1 = newSVsv (pathname);
1180 req->ptr1 = SvPVbyte_nolen (req->sv1);
1181 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1182
1183 if (flags & EIO_READDIR_DENTS)
1184 req->int1 |= EIO_READDIR_CUSTOM2;
1185
1186 REQ_SEND;
1187}
1188
1189void
1190aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1191 ALIAS:
1192 aio_unlink = EIO_UNLINK
1193 aio_rmdir = EIO_RMDIR
1194 aio_readdir = EIO_READDIR
1195 PPCODE:
1196{
1197 dREQ;
1198
1199 req->type = ix;
1200 req->sv1 = newSVsv (pathname);
1201 req->ptr1 = SvPVbyte_nolen (req->sv1);
1202
1203 REQ_SEND;
1204}
1205
1206void
1207aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1208 ALIAS:
1209 aio_link = EIO_LINK
1210 aio_symlink = EIO_SYMLINK
1211 aio_rename = EIO_RENAME
1212 PPCODE:
1213{
1214 dREQ;
1215
1216 req->type = ix;
1217 req->sv1 = newSVsv (oldpath);
1218 req->ptr1 = SvPVbyte_nolen (req->sv1);
1219 req->sv2 = newSVsv (newpath);
1220 req->ptr2 = SvPVbyte_nolen (req->sv2);
1221
1222 REQ_SEND;
1223}
1224
1225void
1226aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1227 PPCODE:
1228{
1229 dREQ;
1230
1231 req->type = EIO_MKNOD;
1232 req->sv1 = newSVsv (pathname);
1233 req->ptr1 = SvPVbyte_nolen (req->sv1);
1234 req->int2 = (mode_t)mode;
1235 req->offs = dev;
1236
1237 REQ_SEND;
1238}
1239
1240void
1241aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1242 ALIAS:
1243 aio_mtouch = EIO_MTOUCH
1244 aio_msync = EIO_MSYNC
1245 PROTOTYPE: $$$$;$
1246 PPCODE:
1247{
1248 STRLEN svlen;
1249 UV len = SvUV (length);
1250 char *svptr = SvPVbyte (data, svlen);
1251
1252 if (offset < 0)
1253 offset += svlen;
1254
1255 if (offset < 0 || offset > svlen)
1256 croak ("offset outside of scalar");
1257
1258 if (!SvOK (length) || len + offset > svlen)
1259 len = svlen - offset;
1260
1261 {
1262 dREQ;
1263
1264 req->type = ix;
1265 req->size = len;
1266 req->sv2 = SvREFCNT_inc (data);
1267 req->ptr2 = (char *)svptr + offset;
1268 req->int1 = flags;
1269
1270 REQ_SEND;
1271 }
1272}
1273
1274void
1275aio_busy (double delay, SV *callback=&PL_sv_undef)
1276 PPCODE:
1277{
1278 dREQ;
1279
1280 req->type = EIO_BUSY;
1281 req->nv1 = delay < 0. ? 0. : delay;
1282
1283 REQ_SEND;
1284}
1285
1286void
1287aio_group (SV *callback=&PL_sv_undef)
1288 PROTOTYPE: ;$
1289 PPCODE:
1290{
1291 dREQ;
1292
1293 req->type = EIO_GROUP;
1294
1295 req_submit (req);
1296 XPUSHs (req_sv (req, aio_grp_stash));
1297}
1298
1299void
1300aio_nop (SV *callback=&PL_sv_undef)
1301 ALIAS:
1302 aio_nop = EIO_NOP
1303 aio_sync = EIO_SYNC
1304 PPCODE:
1305{
1306 dREQ;
1307
1308 req->type = ix;
1309
1310 REQ_SEND;
1311}
1312
1313int
1314aioreq_pri (int pri = 0)
1315 PROTOTYPE: ;$
550 CODE: 1316 CODE:
551{ 1317 RETVAL = next_pri;
552 aio_req req; 1318 if (items > 0)
553 1319 {
554 Newz (0, req, 1, aio_cb); 1320 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
555 1321 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
556 if (!req) 1322 next_pri = pri;
557 croak ("out of memory during aio_req allocation"); 1323 }
558 1324 OUTPUT:
559 req->type = REQ_UNLINK; 1325 RETVAL
560 req->data = newSVsv (pathname); 1326
561 req->dataptr = SvPV_nolen (req->data); 1327void
562 req->callback = SvREFCNT_inc (callback); 1328aioreq_nice (int nice = 0)
563 1329 CODE:
564 send_req (req); 1330 nice = next_pri - nice;
565} 1331 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1332 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1333 next_pri = nice;
1334
1335void
1336flush ()
1337 PROTOTYPE:
1338 CODE:
1339 while (eio_nreqs ())
1340 {
1341 poll_wait ();
1342 poll_cb ();
1343 }
1344
1345int
1346poll()
1347 PROTOTYPE:
1348 CODE:
1349 poll_wait ();
1350 RETVAL = poll_cb ();
1351 OUTPUT:
1352 RETVAL
566 1353
567int 1354int
568poll_fileno() 1355poll_fileno()
569 PROTOTYPE: 1356 PROTOTYPE:
570 CODE: 1357 CODE:
571 RETVAL = respipe [0]; 1358 RETVAL = s_epipe_fd (&respipe);
572 OUTPUT: 1359 OUTPUT:
573 RETVAL 1360 RETVAL
574 1361
575int 1362int
576poll_cb(...) 1363poll_cb(...)
577 PROTOTYPE: 1364 PROTOTYPE:
578 CODE: 1365 CODE:
579 RETVAL = poll_cb (aTHX); 1366 RETVAL = poll_cb ();
580 OUTPUT: 1367 OUTPUT:
581 RETVAL 1368 RETVAL
582 1369
583void 1370void
584poll_wait() 1371poll_wait()
585 PROTOTYPE: 1372 PROTOTYPE:
586 CODE: 1373 CODE:
587 if (nreqs)
588 poll_wait (); 1374 poll_wait ();
589 1375
590int 1376int
591nreqs() 1377nreqs()
592 PROTOTYPE: 1378 PROTOTYPE:
593 CODE: 1379 CODE:
594 RETVAL = nreqs; 1380 RETVAL = eio_nreqs ();
595 OUTPUT: 1381 OUTPUT:
596 RETVAL 1382 RETVAL
597 1383
1384int
1385nready()
1386 PROTOTYPE:
1387 CODE:
1388 RETVAL = eio_nready ();
1389 OUTPUT:
1390 RETVAL
1391
1392int
1393npending()
1394 PROTOTYPE:
1395 CODE:
1396 RETVAL = eio_npending ();
1397 OUTPUT:
1398 RETVAL
1399
1400int
1401nthreads()
1402 PROTOTYPE:
1403 CODE:
1404 RETVAL = eio_nthreads ();
1405 OUTPUT:
1406 RETVAL
1407
1408int
1409fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1410 PROTOTYPE: $$$$
1411 CODE:
1412 RETVAL = posix_fadvise (fh, offset, length, advice);
1413 OUTPUT:
1414 RETVAL
1415
1416ssize_t
1417sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1418 PROTOTYPE: $$$$
1419 CODE:
1420 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1421 OUTPUT:
1422 RETVAL
1423
1424void
1425mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1426 PROTOTYPE: $$$$$;$
1427 PPCODE:
1428 sv_unmagic (scalar, MMAP_MAGIC);
1429{
1430 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1431 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1432 if (addr == (void *)-1)
1433 XSRETURN_NO;
1434
1435 sv_force_normal (scalar);
1436
1437 /* we store the length in mg_obj, as namlen is I32 :/ */
1438 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1439 ->mg_obj = (SV *)length;
1440
1441 SvUPGRADE (scalar, SVt_PV); /* nop... */
1442
1443 if (!(prot & PROT_WRITE))
1444 SvREADONLY_on (scalar);
1445
1446 if (SvLEN (scalar))
1447 Safefree (SvPVX (scalar));
1448
1449 SvPVX (scalar) = (char *)addr;
1450 SvCUR_set (scalar, length);
1451 SvLEN_set (scalar, 0);
1452 SvPOK_only (scalar);
1453
1454 XSRETURN_YES;
1455}
1456
1457void
1458munmap (SV *scalar)
1459 PROTOTYPE: $
1460 CODE:
1461 sv_unmagic (scalar, MMAP_MAGIC);
1462
1463int
1464madvise (SV *scalar, off_t offset, off_t length, IV advice_or_prot)
1465 ALIAS:
1466 mprotect = 1
1467 PROTOTYPE: $$$$
1468 CODE:
1469{
1470 STRLEN cur;
1471 char *addr = SvPVbyte (scalar, cur);
1472
1473 if (offset > cur)
1474 RETVAL = errno = EFAULT;
1475 else
1476 {
1477 if (!SvOK (ST (2)))
1478 length = cur - offset;
1479
1480 if (offset + length > cur)
1481 RETVAL = errno = EFAULT;
1482 else
1483 switch (ix)
1484 {
1485 case 0: RETVAL = posix_madvise (addr + offset, length, advice_or_prot); break;
1486 case 1: RETVAL = mprotect (addr + offset, length, advice_or_prot); break;
1487 }
1488 }
1489}
1490 OUTPUT:
1491 RETVAL
1492
1493int
1494mlockall (int flags)
1495 PROTOTYPE: $
1496 CODE:
1497#if _POSIX_MEMLOCK
1498#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1499 extern int mallopt (int, int);
1500 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1501#endif
1502 mlockall (flags);
1503#else
1504 RETVAL = -1;
1505 errno = ENOSYS;
1506#endif
1507 OUTPUT:
1508 RETVAL
1509
1510int
1511munlockall ()
1512 PROTOTYPE:
1513 CODE:
1514#if _POSIX_MEMLOCK
1515 munlockall ();
1516#else
1517 RETVAL = -1;
1518 errno = ENOSYS;
1519#endif
1520 OUTPUT:
1521 RETVAL
1522
1523void _on_next_submit (SV *cb)
1524 CODE:
1525 SvREFCNT_dec (on_next_submit);
1526 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1527
1528PROTOTYPES: DISABLE
1529
1530MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1531
1532void
1533cancel (aio_req_ornot req)
1534 CODE:
1535 eio_cancel (req);
1536
1537void
1538cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1539 PPCODE:
1540{
1541 if (GIMME_V != G_VOID)
1542 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1543
1544 if (items > 1)
1545 {
1546 SV *cb_cv =get_cb (callback);
1547
1548 SvREFCNT_dec (req->callback);
1549 req->callback = SvREFCNT_inc (cb_cv);
1550 }
1551}
1552
1553MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1554
1555void
1556add (aio_req grp, ...)
1557 PPCODE:
1558{
1559 int i;
1560
1561 if (grp->int1 == 2)
1562 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1563
1564 for (i = 1; i < items; ++i )
1565 {
1566 aio_req req;
1567
1568 if (GIMME_V != G_VOID)
1569 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1570
1571 req = SvAIO_REQ (ST (i));
1572
1573 if (req)
1574 eio_grp_add (grp, req);
1575 }
1576}
1577
1578void
1579cancel_subs (aio_req_ornot req)
1580 CODE:
1581 req_cancel_subs (req);
1582
1583void
1584result (aio_req grp, ...)
1585 CODE:
1586{
1587 int i;
1588 AV *av;
1589
1590 grp->errorno = errno;
1591
1592 av = newAV ();
1593 av_extend (av, items - 1);
1594
1595 for (i = 1; i < items; ++i )
1596 av_push (av, newSVsv (ST (i)));
1597
1598 SvREFCNT_dec (grp->sv1);
1599 grp->sv1 = (SV *)av;
1600}
1601
1602void
1603errno (aio_req grp, int errorno = errno)
1604 CODE:
1605 grp->errorno = errorno;
1606
1607void
1608limit (aio_req grp, int limit)
1609 CODE:
1610 eio_grp_limit (grp, limit);
1611
1612void
1613feed (aio_req grp, SV *callback=&PL_sv_undef)
1614 CODE:
1615{
1616 SvREFCNT_dec (grp->sv2);
1617 grp->sv2 = newSVsv (callback);
1618 grp->feed = aio_grp_feed;
1619
1620 if (grp->int2 <= 0)
1621 grp->int2 = 2;
1622
1623 eio_grp_limit (grp, grp->int2);
1624}
1625

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