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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.210 by root, Fri Apr 6 11:39:25 2012 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>
9#include <unistd.h> 16#include <limits.h>
10#include <fcntl.h> 17#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 18#include <sched.h>
13#include <endian.h>
14 19
15#include <pthread.h> 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
16#include <sys/syscall.h> 21# include <sys/mman.h>
22#endif
17 23
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 24#if __linux__
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25# include <linux/fs.h>
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26# ifdef FS_IOC_FIEMAP
27# include <linux/fiemap.h>
28# define HAVE_FIEMAP 1
29# endif
30#endif
21 31
22#if __i386 || __amd64 32/* perl namespace pollution */
23# define STACKSIZE ( 256 * sizeof (long)) 33#undef VERSION
24#elif __ia64 34
25# define STACKSIZE (8192 * sizeof (long)) 35/* perl stupidly overrides readdir and maybe others */
36/* with thread-unsafe versions, imagine that :( */
37#undef readdir
38#undef opendir
39#undef closedir
40
41#ifdef _WIN32
42
43 // perl overrides all those nice libc functions
44
45 #undef malloc
46 #undef free
47 #undef open
48 #undef read
49 #undef write
50 #undef send
51 #undef recv
52 #undef stat
53 #undef lstat
54 #undef fstat
55 #undef truncate
56 #undef ftruncate
57 #undef open
58 #undef link
59 #undef close
60 #undef unlink
61 #undef mkdir
62 #undef rmdir
63 #undef rename
64 #undef lseek
65 #undef opendir
66 #undef readdir
67 #undef closedir
68 #undef chmod
69 #undef fchmod
70 #undef dup
71 #undef dup2
72 #undef abort
73 #undef pipe
74
75 #define EIO_STRUCT_STAT struct _stati64
76 #define EIO_STRUCT_STATI64
77
26#else 78#else
27# define STACKSIZE ( 512 * sizeof (long)) 79
80 #include <sys/time.h>
81 #include <sys/select.h>
82 #include <unistd.h>
83 #include <utime.h>
84 #include <signal.h>
85
86 #define EIO_STRUCT_STAT Stat_t
87
28#endif 88#endif
29 89
90/*****************************************************************************/
91
92#if __GNUC__ >= 3
93# define expect(expr,value) __builtin_expect ((expr),(value))
94#else
95# define expect(expr,value) (expr)
96#endif
97
98#define expect_false(expr) expect ((expr) != 0, 0)
99#define expect_true(expr) expect ((expr) != 0, 1)
100
101/*****************************************************************************/
102
103typedef SV SV8; /* byte-sv, used for argument-checking */
104typedef int aio_rfd; /* read file desriptor */
105typedef int aio_wfd; /* write file descriptor */
106
107static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
108
109#define EIO_REQ_MEMBERS \
110 SV *callback; \
111 SV *sv1, *sv2; \
112 SV *sv3, *sv4; \
113 STRLEN stroffset; \
114 SV *self;
115
116#define EIO_NO_WRAPPERS 1
117
118#include "libeio/config.h"
119#include "libeio/eio.h"
120
121static int req_invoke (eio_req *req);
122#define EIO_FINISH(req) req_invoke (req)
123static void req_destroy (eio_req *grp);
124#define EIO_DESTROY(req) req_destroy (req)
125
126#include "libeio/eio.c"
127
128#if !HAVE_POSIX_FADVISE
129# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
130#endif
131
132#if !HAVE_POSIX_MADVISE
133# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
134#endif
135
136#ifndef MAP_ANONYMOUS
137# ifdef MAP_ANON
138# define MAP_ANONYMOUS MAP_ANON
139# else
140# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
141# endif
142#endif
143
144/* defines all sorts of constants to 0 unless they are already defined */
145#include "def0.h"
146
147#ifndef makedev
148# define makedev(maj,min) (((maj) << 8) | (min))
149#endif
150#ifndef major
151# define major(dev) ((dev) >> 8)
152#endif
153#ifndef minor
154# define minor(dev) ((dev) & 0xff)
155#endif
156
157#ifndef PAGESIZE
158# define PAGESIZE sysconf (_SC_PAGESIZE)
159#endif
160
161/*****************************************************************************/
162
163static void
164fiemap (eio_req *req)
165{
166 req->result = -1;
167
168#if HAVE_FIEMAP
169 for (;;)
170 {
171 int count = req->int3;
172
173 if (count < 0)
174 {
175 struct fiemap fiemap;
176
177 fiemap.fm_start = req->offs;
178 fiemap.fm_length = req->size;
179 fiemap.fm_flags = req->int2;
180 fiemap.fm_extent_count = 0;
181
182 if (ioctl (req->int1, FS_IOC_FIEMAP, &fiemap))
183 return;
184
185 count = fiemap.fm_mapped_extents;
186 }
187
188 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
189 errno = ENOMEM;
190 if (!fiemap)
191 return;
192
193 req->ptr1 = fiemap;
194 req->flags |= EIO_FLAG_PTR1_FREE;
195
196 fiemap->fm_start = req->offs;
197 fiemap->fm_length = req->size;
198 fiemap->fm_flags = req->int2;
199 fiemap->fm_extent_count = count;
200
201 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
202 return;
203
204 if (req->int3 >= 0)
205 break; /* when not autosizing we are done */
206
207 if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
208 break; /* autosizing successful, we are done */
209
210 free (fiemap);
211 }
212
213 req->result = 0;
214
215#else
216 errno = ENOSYS;
217#endif
218}
219
220/*****************************************************************************/
221
30enum { 222enum {
31 REQ_QUIT, 223 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}; 224};
37 225
38typedef struct aio_cb {
39 struct aio_cb *next;
40
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; 226typedef eio_req *aio_req;
227typedef eio_req *aio_req_ornot;
228typedef eio_wd aio_wd;
57 229
58static int started; 230static SV *on_next_submit;
59static int nreqs; 231static int next_pri = EIO_PRI_DEFAULT;
60static int reqpipe[2], respipe[2]; 232static int max_outstanding;
61 233
62static aio_req qs, qe; /* queue start, queue end */ 234static s_epipe respipe;
63 235
64static void *aio_proc(void *arg); 236static void req_destroy (aio_req req);
237static void req_cancel (aio_req req);
65 238
66static void 239static void
67start_thread (void) 240want_poll (void)
68{ 241{
69 sigset_t fullsigset, oldsigset; 242 /* write a dummy byte to the pipe so fh becomes ready */
70 pthread_t tid; 243 s_epipe_signal (&respipe);
71 pthread_attr_t attr;
72
73 pthread_attr_init (&attr);
74 pthread_attr_setstacksize (&attr, STACKSIZE);
75 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77 sigfillset (&fullsigset);
78 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81 started++;
82
83 sigprocmask (SIG_SETMASK, &oldsigset, 0);
84} 244}
85 245
86static void 246static void
87send_reqs (void) 247done_poll (void)
88{ 248{
89 /* this write is atomic */ 249 /* read any signals sent by the worker threads */
90 while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) 250 s_epipe_drain (&respipe);
251}
252
253/* must be called at most once */
254static SV *
255req_sv (aio_req req, HV *stash)
256{
257 if (!req->self)
91 { 258 {
92 qs = qs->next; 259 req->self = (SV *)newHV ();
93 if (!qs) qe = 0; 260 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
94 } 261 }
262
263 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
264}
265
266static SV *
267newSVaio_wd (aio_wd wd)
268{
269 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
270}
271
272static aio_req
273SvAIO_REQ (SV *sv)
274{
275 MAGIC *mg;
276
277 if (!SvROK (sv)
278 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
279 || (SvSTASH (SvRV (sv)) != aio_grp_stash
280 && SvSTASH (SvRV (sv)) != aio_req_stash
281 && !sv_derived_from (sv, "IO::AIO::REQ")))
282 croak ("object of class IO::AIO::REQ expected");
283
284 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
285
286 return mg ? (aio_req)mg->mg_ptr : 0;
287}
288
289static aio_wd
290SvAIO_WD (SV *sv)
291{
292 if (!SvROK (sv)
293 || SvTYPE (SvRV (sv)) != SVt_PVMG
294 || SvSTASH (SvRV (sv)) != aio_wd_stash)
295 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
296
297 return (aio_wd)(long)SvIVX (SvRV (sv));
95} 298}
96 299
97static void 300static void
98send_req (aio_req req) 301aio_grp_feed (aio_req grp)
99{ 302{
100 nreqs++; 303 if (grp->sv2 && SvOK (grp->sv2))
101 req->next = 0;
102
103 if (qe)
104 { 304 {
105 qe->next = req; 305 dSP;
106 qe = req; 306
307 ENTER;
308 SAVETMPS;
309 PUSHMARK (SP);
310 XPUSHs (req_sv (grp, aio_grp_stash));
311 PUTBACK;
312 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
313 SPAGAIN;
314 FREETMPS;
315 LEAVE;
107 } 316 }
108 else
109 qe = qs = req;
110
111 send_reqs ();
112} 317}
113 318
114static void 319static void
115end_thread (void) 320req_submit (eio_req *req)
116{ 321{
117 aio_req req; 322 eio_submit (req);
118 New (0, req, 1, aio_cb);
119 req->type = REQ_QUIT;
120 323
121 send_req (req); 324 if (expect_false (on_next_submit))
122}
123
124static void
125read_write (pTHX_
126 int dowrite, int fd, off_t offset, size_t length,
127 SV *data, STRLEN dataoffset, SV *callback)
128{
129 aio_req req;
130 STRLEN svlen;
131 char *svptr = SvPV (data, svlen);
132
133 SvUPGRADE (data, SVt_PV);
134 SvPOK_on (data);
135
136 if (dataoffset < 0)
137 dataoffset += svlen;
138
139 if (dataoffset < 0 || dataoffset > svlen)
140 croak ("data offset outside of string");
141
142 if (dowrite)
143 { 325 {
144 /* write: check length and adjust. */ 326 dSP;
145 if (length < 0 || length + dataoffset > svlen) 327 SV *cb = sv_2mortal (on_next_submit);
146 length = svlen - dataoffset; 328
329 on_next_submit = 0;
330
331 PUSHMARK (SP);
332 PUTBACK;
333 call_sv (cb, G_DISCARD | G_EVAL);
147 } 334 }
148 else 335}
336
337static int
338req_invoke (eio_req *req)
339{
340 if (req->flags & FLAG_SV2_RO_OFF)
341 SvREADONLY_off (req->sv2);
342
343 if (!EIO_CANCELLED (req) && req->callback)
149 { 344 {
150 /* read: grow scalar as necessary */
151 svptr = SvGROW (data, length + dataoffset);
152 }
153
154 if (length < 0)
155 croak ("length must not be negative");
156
157 Newz (0, req, 1, aio_cb);
158
159 if (!req)
160 croak ("out of memory during aio_req allocation");
161
162 req->type = dowrite ? REQ_WRITE : REQ_READ;
163 req->fd = fd;
164 req->offset = offset;
165 req->length = length;
166 req->data = SvREFCNT_inc (data);
167 req->dataptr = (char *)svptr + dataoffset;
168 req->callback = SvREFCNT_inc (callback);
169
170 send_req (req);
171}
172
173static void
174poll_wait ()
175{
176 fd_set rfd;
177 FD_ZERO(&rfd);
178 FD_SET(respipe[0], &rfd);
179
180 select (respipe[0] + 1, &rfd, 0, 0, 0);
181}
182
183static int
184poll_cb (pTHX)
185{
186 dSP; 345 dSP;
187 int count = 0; 346 static SV *sv_result_cache; /* caches the result integer SV */
188 aio_req req; 347 SV *sv_result;
189 348
190 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 349 ENTER;
191 { 350 SAVETMPS;
192 nreqs--; 351 PUSHMARK (SP);
352 EXTEND (SP, 1);
193 353
194 if (req->type == REQ_QUIT) 354 /* do not recreate the result IV from scratch each time */
195 started--; 355 if (expect_true (sv_result_cache))
356 {
357 sv_result = sv_result_cache; sv_result_cache = 0;
358 SvIV_set (sv_result, req->result);
359 SvIOK_only (sv_result);
360 }
196 else 361 else
197 { 362 {
198 int errorno = errno;
199 errno = req->errorno;
200
201 if (req->type == REQ_READ)
202 SvCUR_set (req->data, req->dataoffset
203 + req->result > 0 ? req->result : 0);
204
205 if (req->data)
206 SvREFCNT_dec (req->data);
207
208 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
209 {
210 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211 PL_laststatval = req->result;
212 PL_statcache = *(req->statdata);
213
214 Safefree (req->statdata);
215 }
216
217 PUSHMARK (SP);
218 XPUSHs (sv_2mortal (newSViv (req->result))); 363 sv_result = newSViv (req->result);
219 PUTBACK; 364 SvREADONLY_on (sv_result);
220 call_sv (req->callback, G_VOID);
221 SPAGAIN;
222
223 if (req->callback)
224 SvREFCNT_dec (req->callback);
225
226 errno = errorno;
227 count++;
228 } 365 }
229
230 Safefree (req);
231 }
232
233 if (qs)
234 send_reqs ();
235
236 return count;
237}
238
239static void *
240aio_proc (void *thr_arg)
241{
242 aio_req req;
243
244 /* then loop */
245 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246 {
247 errno = 0; /* strictly unnecessary */
248 366
249 switch (req->type) 367 switch (req->type)
250 { 368 {
251 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 369 case EIO_WD_OPEN:
252 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 370 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
253#if SYS_readahead 371 break;
254 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 372
255#else 373 case EIO_READDIR:
256 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 374 {
375 SV *rv = &PL_sv_undef;
376
377 if (req->result >= 0)
378 {
379 int i;
380 char *names = (char *)req->ptr2;
381 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
382 AV *av = newAV ();
383
384 av_extend (av, req->result - 1);
385
386 for (i = 0; i < req->result; ++i)
387 {
388 if (req->int1 & EIO_READDIR_DENTS)
389 {
390 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
391
392 if (req->int1 & EIO_READDIR_CUSTOM2)
393 {
394 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
395 AV *avent = newAV ();
396
397 av_extend (avent, 2);
398
399 if (!sv_type [ent->type])
400 {
401 sv_type [ent->type] = newSViv (ent->type);
402 SvREADONLY_on (sv_type [ent->type]);
403 }
404
405 av_store (avent, 0, namesv);
406 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
407 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
408
409 av_store (av, i, newRV_noinc ((SV *)avent));
410 }
411 else
412 av_store (av, i, namesv);
413
414 ++ent;
415 }
416 else
417 {
418 SV *name = newSVpv (names, 0);
419 av_store (av, i, name);
420 names += SvCUR (name) + 1;
421 }
422 }
423
424 rv = sv_2mortal (newRV_noinc ((SV *)av));
425 }
426
427 PUSHs (rv);
428
429 if (req->int1 & EIO_READDIR_CUSTOM1)
430 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
431 }
432 break;
433
434 case EIO_OPEN:
435 {
436 /* convert fd to fh */
437 SV *fh = &PL_sv_undef;
438
439 if (req->result >= 0)
440 {
441 GV *gv = (GV *)sv_newmortal ();
442 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
443 char sym [64];
444 int symlen;
445
446 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
447 gv_init (gv, aio_stash, sym, symlen, 0);
448
449 symlen = snprintf (
450 sym,
451 sizeof (sym),
452 "%s&=%d",
453 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
454 (int)req->result
455 );
456
457 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
458 fh = (SV *)gv;
459 }
460
461 PUSHs (fh);
462 }
463 break;
464
465 case EIO_STATVFS:
466 case EIO_FSTATVFS:
467 {
468 SV *rv = &PL_sv_undef;
469
470#ifndef _WIN32
471 if (req->result >= 0)
472 {
473 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
474 HV *hv = newHV ();
475
476 rv = sv_2mortal (newRV_noinc ((SV *)hv));
477
478 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
479 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
480 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
481 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
482 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
483 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
484 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
485 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
486 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
487 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
488 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
489 }
257#endif 490#endif
258 491
259 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 492 PUSHs (rv);
260 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 493 }
261 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
262 494
263 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 495 break;
264 case REQ_CLOSE: req->result = close (req->fd); break;
265 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
266 496
267 case REQ_FSYNC: req->result = fsync (req->fd); break; 497 case EIO_GROUP:
268 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 498 req->int1 = 2; /* mark group as finished */
269 499
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 case EIO_REALPATH:
517 if (req->result > 0)
518 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
519 break;
520
521 case EIO_STAT:
522 case EIO_LSTAT:
523 case EIO_FSTAT:
524 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
525
526 if (!(PL_laststatval = req->result))
527 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
528 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
529
530 PUSHs (sv_result);
531 break;
532
533 case EIO_SEEK:
534 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
535 break;
536
537 case EIO_READ:
538 {
539 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
540 *SvEND (req->sv2) = 0;
541 SvPOK_only (req->sv2);
542 SvSETMAGIC (req->sv2);
543 PUSHs (sv_result);
544 }
545 break;
546
270 case REQ_QUIT: 547 case EIO_CUSTOM:
271 write (respipe[1], (void *)&req, sizeof (req)); 548 if (req->feed == fiemap)
272 return 0; 549 {
550 if (!req->result)
551 {
552 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
553
554 if (fiemap->fm_extent_count)
555 {
556 AV *av = newAV ();
557 int i;
558
559 while (fiemap->fm_mapped_extents)
560 {
561 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
562 AV *ext_av = newAV ();
563
564 av_store (ext_av, 3, newSVuv (extent->fe_flags));
565 av_store (ext_av, 2, newSVval64 (extent->fe_length));
566 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
567 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
568
569 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
570 }
571
572 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
573 }
574 else
575 {
576 SvIV_set (sv_result, fiemap->fm_mapped_extents);
577 PUSHs (sv_result);
578 }
579 }
580 }
581 else
582 PUSHs (sv_result);
583 break;
584
585 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
586 if (req->result > 0)
587 SvIV_set (sv_result, 0);
588 /* FALLTHROUGH */
273 589
274 default: 590 default:
275 req->result = ENOSYS; 591 PUSHs (sv_result);
276 break; 592 break;
277 } 593 }
278 594
279 req->errorno = errno; 595 errno = req->errorno;
280 write (respipe[1], (void *)&req, sizeof (req)); 596
597 PUTBACK;
598 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
599 SPAGAIN;
600
601 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
602 SvREFCNT_dec (sv_result);
603 else
604 sv_result_cache = sv_result;
605
606 FREETMPS;
607 LEAVE;
608
609 PUTBACK;
281 } 610 }
282 611
612 return !!SvTRUE (ERRSV);
613}
614
615static void
616req_destroy (aio_req req)
617{
618 if (req->self)
619 {
620 sv_unmagic (req->self, PERL_MAGIC_ext);
621 SvREFCNT_dec (req->self);
622 }
623
624 SvREFCNT_dec (req->sv1);
625 SvREFCNT_dec (req->sv2);
626 SvREFCNT_dec (req->sv3);
627 SvREFCNT_dec (req->sv4);
628 SvREFCNT_dec (req->callback);
629
630 free (req);
631}
632
633static void
634req_cancel_subs (aio_req grp)
635{
636 if (grp->type != EIO_GROUP)
637 return;
638
639 SvREFCNT_dec (grp->sv2);
640 grp->sv2 = 0;
641
642 eio_grp_cancel (grp);
643}
644
645static void ecb_cold
646create_respipe (void)
647{
648 if (s_epipe_renew (&respipe))
649 croak ("IO::AIO: unable to initialize result pipe");
650}
651
652static void
653poll_wait (void)
654{
655 while (eio_nreqs ())
656 {
657 int size;
658
659 X_LOCK (reslock);
660 size = res_queue.size;
661 X_UNLOCK (reslock);
662
663 if (size)
664 return;
665
666 etp_maybe_start_thread ();
667
668 s_epipe_wait (&respipe);
669 }
670}
671
672static int
673poll_cb (void)
674{
675 for (;;)
676 {
677 int res = eio_poll ();
678
679 if (res > 0)
680 croak (0);
681
682 if (!max_outstanding || max_outstanding > eio_nreqs ())
683 return res;
684
685 poll_wait ();
686 }
687}
688
689static void ecb_cold
690reinit (void)
691{
692 create_respipe ();
693
694 if (eio_init (want_poll, done_poll) < 0)
695 croak ("IO::AIO: unable to initialise eio library");
696}
697
698/*****************************************************************************/
699
700#if !_POSIX_MAPPED_FILES
701# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
702# define munmap(addr,length) (errno = ENOSYS, -1)
703#endif
704
705#if !_POSIX_MEMORY_PROTECTION
706# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
707# define PROT_NONE 0
708# define PROT_WRITE 0
709# define MAP_PRIVATE 0
710# define MAP_SHARED 0
711# define MAP_FIXED 0
712#endif
713
714#define MMAP_MAGIC PERL_MAGIC_ext
715
716static int ecb_cold
717mmap_free (pTHX_ SV *sv, MAGIC *mg)
718{
719 int old_errno = errno;
720 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
721 errno = old_errno;
722
723 mg->mg_obj = 0; /* just in case */
724
725 SvREADONLY_off (sv);
726
727 if (SvPVX (sv) != mg->mg_ptr)
728 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
729
730 SvCUR_set (sv, 0);
731 SvPVX (sv) = 0;
732 SvOK_off (sv);
733
283 return 0; 734 return 0;
284} 735}
285 736
737static MGVTBL mmap_vtbl = {
738 0, 0, 0, 0, mmap_free
739};
740
741/*****************************************************************************/
742
743static SV *
744get_cb (SV *cb_sv)
745{
746 SvGETMAGIC (cb_sv);
747 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
748}
749
750static aio_req ecb_noinline
751dreq (SV *callback)
752{
753 SV *cb_cv;
754 aio_req req;
755 int req_pri = next_pri;
756 next_pri = EIO_PRI_DEFAULT;
757
758 cb_cv = get_cb (callback);
759
760 req = calloc (sizeof (*req), 1);
761 if (!req)
762 croak ("out of memory during eio_req allocation");
763
764 req->callback = SvREFCNT_inc (cb_cv);
765 req->pri = req_pri;
766
767 return req;
768}
769
770#define dREQ \
771 aio_req req = dreq (callback); \
772
773#define REQ_SEND \
774 PUTBACK; \
775 req_submit (req); \
776 SPAGAIN; \
777 \
778 if (GIMME_V != G_VOID) \
779 XPUSHs (req_sv (req, aio_req_stash));
780
781ecb_inline void
782req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
783{
784 if (expect_false (SvROK (path)))
785 {
786 SV *rv = SvRV (path);
787 SV *wdob;
788
789 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
790 {
791 path = AvARRAY (rv)[1];
792 wdob = AvARRAY (rv)[0];
793
794 if (SvOK (wdob))
795 {
796 *wd = SvAIO_WD (wdob);
797 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
798 }
799 else
800 *wd = EIO_INVALID_WD;
801 }
802 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
803 {
804 *wd = (aio_wd)(long)SvIVX (rv);
805 *wdsv = SvREFCNT_inc_NN (rv);
806 *ptr = ".";
807 return; /* path set to "." */
808 }
809 else
810 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
811 }
812
813 *pathsv = newSVsv (path);
814 *ptr = SvPVbyte_nolen (*pathsv);
815}
816
817static void ecb_noinline
818req_set_path1 (aio_req req, SV *path)
819{
820 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
821}
822
823static void ecb_noinline
824req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
825{
826 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
827
828 switch (SvTYPE (rv))
829 {
830 case SVt_PVIO:
831 case SVt_PVLV:
832 case SVt_PVGV:
833 req->type = type_fh;
834 req->sv1 = newSVsv (fh_or_path);
835 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
836 break;
837
838 default:
839 req->type = type_path;
840 req_set_path1 (req, fh_or_path);
841 break;
842 }
843}
844
845XS(boot_IO__AIO) ecb_cold;
846
286MODULE = IO::AIO PACKAGE = IO::AIO 847MODULE = IO::AIO PACKAGE = IO::AIO
287 848
849PROTOTYPES: ENABLE
850
288BOOT: 851BOOT:
289{ 852{
290 if (pipe (reqpipe) || pipe (respipe)) 853 static const struct {
291 croak ("unable to initialize request or result pipe"); 854 const char *name;
855 IV iv;
856 } *civ, const_iv[] = {
857# define const_niv(name, value) { # name, (IV) value },
858# define const_iv(name) { # name, (IV) name },
859# define const_eio(name) { # name, (IV) EIO_ ## name },
292 860
293 if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) 861 /* you have to re-run ./gendef0 after adding/Removing any constants here */
294 croak ("cannot set result pipe to nonblocking mode");
295 862
296 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 863 const_iv (ENOSYS)
297 croak ("cannot set result pipe to nonblocking mode"); 864 const_iv (EXDEV)
298} 865 const_iv (EBADR)
299 866
867 const_iv (O_RDONLY)
868 const_iv (O_WRONLY)
869 const_iv (O_RDWR)
870 const_iv (O_CREAT)
871 const_iv (O_TRUNC)
872 const_iv (O_EXCL)
873 const_iv (O_APPEND)
874
875 const_iv (O_ASYNC)
876 const_iv (O_DIRECT)
877 const_iv (O_NOATIME)
878
879 const_iv (O_CLOEXEC)
880 const_iv (O_NOCTTY)
881 const_iv (O_NOFOLLOW)
882 const_iv (O_NONBLOCK)
883 const_iv (O_EXEC)
884 const_iv (O_SEARCH)
885 const_iv (O_DIRECTORY)
886 const_iv (O_DSYNC)
887 const_iv (O_RSYNC)
888 const_iv (O_SYNC)
889 const_iv (O_TTY_INIT)
890
891 const_iv (S_IFIFO)
892 const_iv (S_IFCHR)
893 const_iv (S_IFBLK)
894 const_iv (S_IFLNK)
895 const_iv (S_IFREG)
896 const_iv (S_IFDIR)
897 const_iv (S_IFWHT)
898 const_iv (S_IFSOCK)
899 const_iv (S_IFMT)
900
901 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
902 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
903 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
904 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
905 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
906 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
907
908 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
909 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
910 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
911 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
912 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
913
914 const_iv (ST_RDONLY)
915 const_iv (ST_NOSUID)
916 const_iv (ST_NODEV)
917 const_iv (ST_NOEXEC)
918 const_iv (ST_SYNCHRONOUS)
919 const_iv (ST_MANDLOCK)
920 const_iv (ST_WRITE)
921 const_iv (ST_APPEND)
922 const_iv (ST_IMMUTABLE)
923 const_iv (ST_NOATIME)
924 const_iv (ST_NODIRATIME)
925 const_iv (ST_RELATIME)
926
927 const_iv (PROT_NONE)
928 const_iv (PROT_EXEC)
929 const_iv (PROT_READ)
930 const_iv (PROT_WRITE)
931
932 /*const_iv (MAP_FIXED)*/
933 const_iv (MAP_PRIVATE)
934 const_iv (MAP_SHARED)
935 const_iv (MAP_ANONYMOUS)
936
937 /* linuxish */
938 const_iv (MAP_HUGETLB)
939 const_iv (MAP_LOCKED)
940 const_iv (MAP_NORESERVE)
941 const_iv (MAP_POPULATE)
942 const_iv (MAP_NONBLOCK)
943
944 const_iv (FIEMAP_FLAG_SYNC)
945 const_iv (FIEMAP_FLAG_XATTR)
946 const_iv (FIEMAP_FLAGS_COMPAT)
947 const_iv (FIEMAP_EXTENT_LAST)
948 const_iv (FIEMAP_EXTENT_UNKNOWN)
949 const_iv (FIEMAP_EXTENT_DELALLOC)
950 const_iv (FIEMAP_EXTENT_ENCODED)
951 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
952 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
953 const_iv (FIEMAP_EXTENT_DATA_INLINE)
954 const_iv (FIEMAP_EXTENT_DATA_TAIL)
955 const_iv (FIEMAP_EXTENT_UNWRITTEN)
956 const_iv (FIEMAP_EXTENT_MERGED)
957 const_iv (FIEMAP_EXTENT_SHARED)
958
959 const_eio (SEEK_SET)
960 const_eio (SEEK_CUR)
961 const_eio (SEEK_END)
962
963 const_eio (MCL_FUTURE)
964 const_eio (MCL_CURRENT)
965
966 const_eio (MS_ASYNC)
967 const_eio (MS_INVALIDATE)
968 const_eio (MS_SYNC)
969
970 const_eio (MT_MODIFY)
971
972 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
973 const_eio (SYNC_FILE_RANGE_WRITE)
974 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
975
976 const_eio (FALLOC_FL_KEEP_SIZE)
977
978 const_eio (READDIR_DENTS)
979 const_eio (READDIR_DIRS_FIRST)
980 const_eio (READDIR_STAT_ORDER)
981 const_eio (READDIR_FOUND_UNKNOWN)
982
983 const_eio (DT_UNKNOWN)
984 const_eio (DT_FIFO)
985 const_eio (DT_CHR)
986 const_eio (DT_DIR)
987 const_eio (DT_BLK)
988 const_eio (DT_REG)
989 const_eio (DT_LNK)
990 const_eio (DT_SOCK)
991 const_eio (DT_WHT)
992 };
993
994 aio_stash = gv_stashpv ("IO::AIO" , 1);
995 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
996 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
997 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
998
999 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1000 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1001
1002 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1003
1004 reinit ();
1005}
1006
300void 1007void
301min_parallel(nthreads) 1008reinit ()
302 int nthreads 1009 PROTOTYPE:
1010
1011void
1012max_poll_reqs (unsigned int nreqs)
303 PROTOTYPE: $ 1013 PROTOTYPE: $
304 CODE: 1014 CODE:
305 while (nthreads > started) 1015 eio_set_max_poll_reqs (nreqs);
306 start_thread ();
307 1016
308void 1017void
309max_parallel(nthreads) 1018max_poll_time (double nseconds)
310 int nthreads
311 PROTOTYPE: $ 1019 PROTOTYPE: $
312 CODE: 1020 CODE:
1021 eio_set_max_poll_time (nseconds);
1022
1023void
1024min_parallel (unsigned int nthreads)
1025 PROTOTYPE: $
1026 CODE:
1027 eio_set_min_parallel (nthreads);
1028
1029void
1030max_parallel (unsigned int nthreads)
1031 PROTOTYPE: $
1032 CODE:
1033 eio_set_max_parallel (nthreads);
1034
1035void
1036max_idle (unsigned int nthreads)
1037 PROTOTYPE: $
1038 CODE:
1039 eio_set_max_idle (nthreads);
1040
1041void
1042idle_timeout (unsigned int seconds)
1043 PROTOTYPE: $
1044 CODE:
1045 eio_set_idle_timeout (seconds);
1046
1047void
1048max_outstanding (unsigned int maxreqs)
1049 PROTOTYPE: $
1050 CODE:
1051 max_outstanding = maxreqs;
1052
1053void
1054aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1055 PPCODE:
313{ 1056{
314 int cur = started; 1057 dREQ;
315 while (cur > nthreads) 1058
316 { 1059 req->type = EIO_WD_OPEN;
317 end_thread (); 1060 req_set_path1 (req, pathname);
1061
1062 REQ_SEND;
1063}
1064
1065void
1066aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1067 PPCODE:
1068{
1069 dREQ;
1070
1071 req->type = EIO_OPEN;
1072 req_set_path1 (req, pathname);
1073 req->int1 = flags;
1074 req->int2 = mode;
1075
1076 REQ_SEND;
1077}
1078
1079void
1080aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1081 ALIAS:
1082 aio_fsync = EIO_FSYNC
1083 aio_fdatasync = EIO_FDATASYNC
1084 aio_syncfs = EIO_SYNCFS
1085 PPCODE:
1086{
1087 int fd = s_fileno_croak (fh, 0);
1088 dREQ;
1089
1090 req->type = ix;
1091 req->sv1 = newSVsv (fh);
1092 req->int1 = fd;
1093
1094 REQ_SEND;
1095}
1096
1097void
1098aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1099 PPCODE:
1100{
1101 int fd = s_fileno_croak (fh, 0);
1102 dREQ;
1103
1104 req->type = EIO_SYNC_FILE_RANGE;
1105 req->sv1 = newSVsv (fh);
1106 req->int1 = fd;
1107 req->offs = offset;
1108 req->size = nbytes;
1109 req->int2 = flags;
1110
1111 REQ_SEND;
1112}
1113
1114void
1115aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1116 PPCODE:
1117{
1118 int fd = s_fileno_croak (fh, 0);
1119 dREQ;
1120
1121 req->type = EIO_FALLOCATE;
1122 req->sv1 = newSVsv (fh);
1123 req->int1 = fd;
1124 req->int2 = mode;
1125 req->offs = offset;
1126 req->size = len;
1127
1128 REQ_SEND;
1129}
1130
1131void
1132aio_close (SV *fh, SV *callback=&PL_sv_undef)
1133 PPCODE:
1134{
1135 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1136 int fd = s_fileno_croak (fh, 0);
1137 dREQ;
1138
1139 if (expect_false (close_fd < 0))
1140 {
1141 int pipefd [2];
1142
1143 if (
1144#ifdef _WIN32
1145 _pipe (pipefd, 1, _O_BINARY) < 0
1146#else
1147 pipe (pipefd) < 0
1148 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1149#endif
1150 || close (pipefd [1]) < 0
318 cur--; 1151 )
1152 abort (); /*D*/
1153
1154 close_fd = pipefd [0];
319 } 1155 }
320 1156
321 while (started > nthreads) 1157 req->type = EIO_DUP2;
1158 req->int1 = close_fd;
1159 req->sv2 = newSVsv (fh);
1160 req->int2 = fd;
1161
1162 REQ_SEND;
1163}
1164
1165void
1166aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1167 PPCODE:
1168{
1169 STRLEN svlen;
1170 int fd = s_fileno_croak (fh, 0);
1171 dREQ;
1172
1173 req->type = EIO_SEEK;
1174 req->sv1 = newSVsv (fh);
1175 req->int1 = fd;
1176 req->offs = SvVAL64 (offset);
1177 req->int2 = whence;
1178
1179 REQ_SEND;
1180}
1181
1182void
1183aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1184 ALIAS:
1185 aio_read = EIO_READ
1186 aio_write = EIO_WRITE
1187 PPCODE:
1188{
1189 STRLEN svlen;
1190 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1191 char *svptr = SvPVbyte (data, svlen);
1192 UV len = SvUV (length);
1193
1194 if (dataoffset < 0)
1195 dataoffset += svlen;
1196
1197 if (dataoffset < 0 || dataoffset > svlen)
1198 croak ("dataoffset outside of data scalar");
1199
1200 if (ix == EIO_WRITE)
322 { 1201 {
323 poll_wait (); 1202 /* write: check length and adjust. */
324 poll_cb (aTHX); 1203 if (!SvOK (length) || len + dataoffset > svlen)
325 } 1204 len = svlen - dataoffset;
326}
327
328void
329aio_open(pathname,flags,mode,callback)
330 SV * pathname
331 int flags
332 int mode
333 SV * callback
334 PROTOTYPE: $$$$
335 CODE:
336{
337 aio_req req;
338
339 Newz (0, req, 1, aio_cb);
340
341 if (!req)
342 croak ("out of memory during aio_req allocation");
343
344 req->type = REQ_OPEN;
345 req->data = newSVsv (pathname);
346 req->dataptr = SvPV_nolen (req->data);
347 req->fd = flags;
348 req->mode = mode;
349 req->callback = SvREFCNT_inc (callback);
350
351 send_req (req);
352}
353
354void
355aio_close(fh,callback)
356 InputStream fh
357 SV * callback
358 PROTOTYPE: $$
359 ALIAS:
360 aio_close = REQ_CLOSE
361 aio_fsync = REQ_FSYNC
362 aio_fdatasync = REQ_FDATASYNC
363 CODE:
364{
365 aio_req req;
366
367 Newz (0, req, 1, aio_cb);
368
369 if (!req)
370 croak ("out of memory during aio_req allocation");
371
372 req->type = ix;
373 req->fd = PerlIO_fileno (fh);
374 req->callback = SvREFCNT_inc (callback);
375
376 send_req (req);
377}
378
379void
380aio_read(fh,offset,length,data,dataoffset,callback)
381 InputStream fh
382 UV offset
383 IV length
384 SV * data
385 IV dataoffset
386 SV * callback
387 PROTOTYPE: $$$$$$
388 CODE:
389 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391void
392aio_write(fh,offset,length,data,dataoffset,callback)
393 OutputStream fh
394 UV offset
395 IV length
396 SV * data
397 IV dataoffset
398 SV * callback
399 PROTOTYPE: $$$$$$
400 CODE:
401 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403void
404aio_readahead(fh,offset,length,callback)
405 InputStream fh
406 UV offset
407 IV length
408 SV * callback
409 PROTOTYPE: $$$$
410 CODE:
411{
412 aio_req req;
413
414 if (length < 0)
415 croak ("length must not be negative");
416
417 Newz (0, req, 1, aio_cb);
418
419 if (!req)
420 croak ("out of memory during aio_req allocation");
421
422 req->type = REQ_READAHEAD;
423 req->fd = PerlIO_fileno (fh);
424 req->offset = offset;
425 req->length = length;
426 req->callback = SvREFCNT_inc (callback);
427
428 send_req (req);
429}
430
431void
432aio_stat(fh_or_path,callback)
433 SV * fh_or_path
434 SV * callback
435 PROTOTYPE: $$
436 ALIAS:
437 aio_lstat = 1
438 CODE:
439{
440 aio_req req;
441
442 Newz (0, req, 1, aio_cb);
443
444 if (!req)
445 croak ("out of memory during aio_req allocation");
446
447 New (0, req->statdata, 1, Stat_t);
448
449 if (!req->statdata)
450 croak ("out of memory during aio_req->statdata allocation");
451
452 if (SvPOK (fh_or_path))
453 {
454 req->type = ix ? REQ_LSTAT : REQ_STAT;
455 req->data = newSVsv (fh_or_path);
456 req->dataptr = SvPV_nolen (req->data);
457 } 1205 }
458 else 1206 else
459 { 1207 {
460 req->type = REQ_FSTAT; 1208 /* read: check type and grow scalar as necessary */
461 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1209 SvUPGRADE (data, SVt_PV);
1210 svptr = SvGROW (data, len + dataoffset + 1);
462 } 1211 }
463 1212
1213 {
1214 dREQ;
1215
1216 req->type = ix;
1217 req->sv1 = newSVsv (fh);
1218 req->int1 = fd;
1219 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1220 req->size = len;
464 req->callback = SvREFCNT_inc (callback); 1221 req->sv2 = SvREFCNT_inc (data);
1222 req->ptr2 = (char *)svptr + dataoffset;
1223 req->stroffset = dataoffset;
465 1224
466 send_req (req); 1225 if (!SvREADONLY (data))
467} 1226 {
1227 SvREADONLY_on (data);
1228 req->flags |= FLAG_SV2_RO_OFF;
1229 }
468 1230
1231 REQ_SEND;
1232 }
1233}
1234
469void 1235void
470aio_unlink(pathname,callback) 1236aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
471 SV * pathname 1237 ALIAS:
472 SV * callback 1238 aio_readlink = EIO_READLINK
473 PROTOTYPE: $$ 1239 aio_realpath = EIO_REALPATH
1240 PPCODE:
1241{
1242 dREQ;
1243
1244 req->type = ix;
1245 req_set_path1 (req, pathname);
1246
1247 REQ_SEND;
1248}
1249
1250void
1251aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1252 PPCODE:
1253{
1254 int ifd = s_fileno_croak (in_fh , 0);
1255 int ofd = s_fileno_croak (out_fh, 1);
1256 dREQ;
1257
1258 req->type = EIO_SENDFILE;
1259 req->sv1 = newSVsv (out_fh);
1260 req->int1 = ofd;
1261 req->sv2 = newSVsv (in_fh);
1262 req->int2 = ifd;
1263 req->offs = in_offset;
1264 req->size = length;
1265
1266 REQ_SEND;
1267}
1268
1269void
1270aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1271 PPCODE:
1272{
1273 int fd = s_fileno_croak (fh, 0);
1274 dREQ;
1275
1276 req->type = EIO_READAHEAD;
1277 req->sv1 = newSVsv (fh);
1278 req->int1 = fd;
1279 req->offs = offset;
1280 req->size = length;
1281
1282 REQ_SEND;
1283}
1284
1285void
1286aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1287 ALIAS:
1288 aio_stat = EIO_STAT
1289 aio_lstat = EIO_LSTAT
1290 aio_statvfs = EIO_STATVFS
1291 PPCODE:
1292{
1293 dREQ;
1294
1295 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1296
1297 REQ_SEND;
1298}
1299
1300UV
1301major (UV dev)
1302 ALIAS:
1303 minor = 1
474 CODE: 1304 CODE:
1305 RETVAL = ix ? major (dev) : minor (dev);
1306 OUTPUT:
1307 RETVAL
1308
1309UV
1310makedev (UV maj, UV min)
1311 CODE:
1312 RETVAL = makedev (maj, min);
1313 OUTPUT:
1314 RETVAL
1315
1316void
1317aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1318 PPCODE:
475{ 1319{
476 aio_req req; 1320 dREQ;
1321
1322 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1323 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1324 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1325
1326 REQ_SEND;
1327}
1328
1329void
1330aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1331 PPCODE:
1332{
1333 dREQ;
1334
1335 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1336 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1337
1338 REQ_SEND;
1339}
1340
1341void
1342aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1343 PPCODE:
1344{
1345 dREQ;
1346
1347 req->int2 = mode;
1348 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1349
1350 REQ_SEND;
1351}
1352
1353void
1354aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1355 PPCODE:
1356{
1357 dREQ;
1358
1359 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1360 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1361 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1362
1363 REQ_SEND;
1364}
1365
1366void
1367aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1368 PPCODE:
1369{
1370 dREQ;
477 1371
478 Newz (0, req, 1, aio_cb); 1372 req->type = EIO_READDIR;
1373 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1374
1375 if (flags & EIO_READDIR_DENTS)
1376 req->int1 |= EIO_READDIR_CUSTOM2;
1377
1378 req_set_path1 (req, pathname);
1379
1380 REQ_SEND;
1381}
1382
1383void
1384aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 req->type = EIO_MKDIR;
1390 req->int2 = mode;
1391 req_set_path1 (req, pathname);
1392
1393 REQ_SEND;
1394}
1395
1396void
1397aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1398 ALIAS:
1399 aio_unlink = EIO_UNLINK
1400 aio_rmdir = EIO_RMDIR
1401 aio_readdir = EIO_READDIR
1402 PPCODE:
1403{
1404 dREQ;
479 1405
480 if (!req) 1406 req->type = ix;
481 croak ("out of memory during aio_req allocation"); 1407 req_set_path1 (req, pathname);
1408
1409 REQ_SEND;
1410}
1411
1412void
1413aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1414 ALIAS:
1415 aio_link = EIO_LINK
1416 aio_symlink = EIO_SYMLINK
1417 aio_rename = EIO_RENAME
1418 PPCODE:
1419{
1420 eio_wd wd2 = 0;
1421 dREQ;
482 1422
483 req->type = REQ_UNLINK; 1423 req->type = ix;
484 req->data = newSVsv (pathname); 1424 req_set_path1 (req, oldpath);
485 req->dataptr = SvPV_nolen (req->data); 1425 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
486 req->callback = SvREFCNT_inc (callback); 1426 req->int3 = (long)wd2;
487 1427
488 send_req (req); 1428 REQ_SEND;
1429}
1430
1431void
1432aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1433 PPCODE:
1434{
1435 dREQ;
1436
1437 req->type = EIO_MKNOD;
1438 req->int2 = (mode_t)mode;
1439 req->offs = dev;
1440 req_set_path1 (req, pathname);
1441
1442 REQ_SEND;
1443}
1444
1445void
1446aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1447 ALIAS:
1448 aio_mtouch = EIO_MTOUCH
1449 aio_msync = EIO_MSYNC
1450 PPCODE:
1451{
1452 STRLEN svlen;
1453 char *svptr = SvPVbyte (data, svlen);
1454 UV len = SvUV (length);
1455
1456 if (offset < 0)
1457 offset += svlen;
1458
1459 if (offset < 0 || offset > svlen)
1460 croak ("offset outside of scalar");
1461
1462 if (!SvOK (length) || len + offset > svlen)
1463 len = svlen - offset;
1464
1465 {
1466 dREQ;
1467
1468 req->type = ix;
1469 req->sv2 = SvREFCNT_inc (data);
1470 req->ptr2 = (char *)svptr + offset;
1471 req->size = len;
1472 req->int1 = flags;
1473
1474 REQ_SEND;
1475 }
1476}
1477
1478void
1479aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1480 PPCODE:
1481{
1482 STRLEN svlen;
1483 char *svptr = SvPVbyte (data, svlen);
1484 UV len = SvUV (length);
1485
1486 if (offset < 0)
1487 offset += svlen;
1488
1489 if (offset < 0 || offset > svlen)
1490 croak ("offset outside of scalar");
1491
1492 if (!SvOK (length) || len + offset > svlen)
1493 len = svlen - offset;
1494
1495 {
1496 dREQ;
1497
1498 req->type = EIO_MLOCK;
1499 req->sv2 = SvREFCNT_inc (data);
1500 req->ptr2 = (char *)svptr + offset;
1501 req->size = len;
1502
1503 REQ_SEND;
1504 }
1505}
1506
1507void
1508aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1509 PPCODE:
1510{
1511 dREQ;
1512
1513 req->type = EIO_MLOCKALL;
1514 req->int1 = flags;
1515
1516 REQ_SEND;
1517}
1518
1519void
1520aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1521 PPCODE:
1522{
1523 int fd = s_fileno_croak (fh, 0);
1524 dREQ;
1525
1526 req->type = EIO_CUSTOM;
1527 req->sv1 = newSVsv (fh);
1528 req->int1 = fd;
1529
1530 req->feed = fiemap;
1531 /* keep our fingers crossed that the next two types are 64 bit */
1532 req->offs = start;
1533 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1534 req->int2 = flags;
1535 req->int3 = SvOK (count) ? SvIV (count) : -1;
1536
1537 REQ_SEND;
1538}
1539
1540void
1541aio_busy (double delay, SV *callback=&PL_sv_undef)
1542 PPCODE:
1543{
1544 dREQ;
1545
1546 req->type = EIO_BUSY;
1547 req->nv1 = delay < 0. ? 0. : delay;
1548
1549 REQ_SEND;
1550}
1551
1552void
1553aio_group (SV *callback=&PL_sv_undef)
1554 PPCODE:
1555{
1556 dREQ;
1557
1558 req->type = EIO_GROUP;
1559
1560 req_submit (req);
1561 XPUSHs (req_sv (req, aio_grp_stash));
1562}
1563
1564void
1565aio_nop (SV *callback=&PL_sv_undef)
1566 ALIAS:
1567 aio_nop = EIO_NOP
1568 aio_sync = EIO_SYNC
1569 PPCODE:
1570{
1571 dREQ;
1572
1573 req->type = ix;
1574
1575 REQ_SEND;
489} 1576}
490 1577
491int 1578int
1579aioreq_pri (int pri = 0)
1580 CODE:
1581 RETVAL = next_pri;
1582 if (items > 0)
1583 {
1584 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1585 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1586 next_pri = pri;
1587 }
1588 OUTPUT:
1589 RETVAL
1590
1591void
1592aioreq_nice (int nice = 0)
1593 CODE:
1594 nice = next_pri - nice;
1595 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1596 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1597 next_pri = nice;
1598
1599void
1600flush ()
1601 CODE:
1602 while (eio_nreqs ())
1603 {
1604 poll_wait ();
1605 poll_cb ();
1606 }
1607
1608int
1609poll ()
1610 CODE:
1611 poll_wait ();
1612 RETVAL = poll_cb ();
1613 OUTPUT:
1614 RETVAL
1615
1616int
492poll_fileno() 1617poll_fileno ()
1618 CODE:
1619 RETVAL = s_epipe_fd (&respipe);
1620 OUTPUT:
1621 RETVAL
1622
1623int
1624poll_cb (...)
493 PROTOTYPE: 1625 PROTOTYPE:
494 CODE: 1626 CODE:
495 RETVAL = respipe[0]; 1627 RETVAL = poll_cb ();
496 OUTPUT: 1628 OUTPUT:
497 RETVAL 1629 RETVAL
498 1630
1631void
1632poll_wait ()
1633 CODE:
1634 poll_wait ();
1635
499int 1636int
500poll_cb(...) 1637nreqs ()
501 PROTOTYPE:
502 CODE: 1638 CODE:
503 RETVAL = poll_cb (aTHX); 1639 RETVAL = eio_nreqs ();
504 OUTPUT: 1640 OUTPUT:
505 RETVAL 1641 RETVAL
506 1642
507void 1643int
508poll_wait() 1644nready ()
509 PROTOTYPE:
510 CODE: 1645 CODE:
511 poll_wait ();
512
513int
514nreqs()
515 PROTOTYPE:
516 CODE:
517 RETVAL = nreqs; 1646 RETVAL = eio_nready ();
518 OUTPUT: 1647 OUTPUT:
519 RETVAL 1648 RETVAL
520 1649
1650int
1651npending ()
1652 CODE:
1653 RETVAL = eio_npending ();
1654 OUTPUT:
1655 RETVAL
1656
1657int
1658nthreads ()
1659 CODE:
1660 RETVAL = eio_nthreads ();
1661 OUTPUT:
1662 RETVAL
1663
1664int
1665fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1666 CODE:
1667 RETVAL = posix_fadvise (fh, offset, length, advice);
1668 OUTPUT:
1669 RETVAL
1670
1671IV
1672sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1673 CODE:
1674 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1675 OUTPUT:
1676 RETVAL
1677
1678void
1679mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1680 PPCODE:
1681 sv_unmagic (scalar, MMAP_MAGIC);
1682{
1683 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1684 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1685 if (addr == (void *)-1)
1686 XSRETURN_NO;
1687
1688 sv_force_normal (scalar);
1689
1690 /* we store the length in mg_obj, as namlen is I32 :/ */
1691 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1692 ->mg_obj = (SV *)length;
1693
1694 SvUPGRADE (scalar, SVt_PV); /* nop... */
1695
1696 if (!(prot & PROT_WRITE))
1697 SvREADONLY_on (scalar);
1698
1699 if (SvLEN (scalar))
1700 Safefree (SvPVX (scalar));
1701
1702 SvPVX (scalar) = (char *)addr;
1703 SvCUR_set (scalar, length);
1704 SvLEN_set (scalar, 0);
1705 SvPOK_only (scalar);
1706
1707 XSRETURN_YES;
1708}
1709
1710void
1711munmap (SV *scalar)
1712 CODE:
1713 sv_unmagic (scalar, MMAP_MAGIC);
1714
1715int
1716madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1717 ALIAS:
1718 mprotect = 1
1719 CODE:
1720{
1721 STRLEN svlen;
1722 void *addr = SvPVbyte (scalar, svlen);
1723 size_t len = SvUV (length);
1724
1725 if (offset < 0)
1726 offset += svlen;
1727
1728 if (offset < 0 || offset > svlen)
1729 croak ("offset outside of scalar");
1730
1731 if (!SvOK (length) || len + offset > svlen)
1732 len = svlen - offset;
1733
1734 addr = (void *)(((intptr_t)addr) + offset);
1735 eio_page_align (&addr, &len);
1736
1737 switch (ix)
1738 {
1739 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1740 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1741 }
1742}
1743 OUTPUT:
1744 RETVAL
1745
1746int
1747munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1748 CODE:
1749{
1750 STRLEN svlen;
1751 void *addr = SvPVbyte (scalar, svlen);
1752 size_t len = SvUV (length);
1753
1754 if (offset < 0)
1755 offset += svlen;
1756
1757 if (offset < 0 || offset > svlen)
1758 croak ("offset outside of scalar");
1759
1760 if (!SvOK (length) || len + offset > svlen)
1761 len = svlen - offset;
1762
1763 addr = (void *)(((intptr_t)addr) + offset);
1764 eio_page_align (&addr, &len);
1765#if _POSIX_MEMLOCK_RANGE
1766 RETVAL = munlock (addr, len);
1767#else
1768 RETVAL = ((errno = ENOSYS), -1);
1769#endif
1770}
1771 OUTPUT:
1772 RETVAL
1773
1774int
1775munlockall ()
1776 CODE:
1777#if _POSIX_MEMLOCK
1778 munlockall ();
1779#else
1780 RETVAL = -1;
1781 errno = ENOSYS;
1782#endif
1783 OUTPUT:
1784 RETVAL
1785
1786void _on_next_submit (SV *cb)
1787 CODE:
1788 SvREFCNT_dec (on_next_submit);
1789 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1790
1791PROTOTYPES: DISABLE
1792
1793MODULE = IO::AIO PACKAGE = IO::AIO::WD
1794
1795BOOT:
1796{
1797 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1798 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1799}
1800
1801void
1802DESTROY (SV *self)
1803 CODE:
1804{
1805 aio_wd wd = SvAIO_WD (self);
1806#if HAVE_AT
1807 {
1808 SV *callback = &PL_sv_undef;
1809 dREQ; /* clobbers next_pri :/ */
1810 next_pri = req->pri; /* restore next_pri */
1811 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1812 req->type = EIO_WD_CLOSE;
1813 req->wd = wd;
1814 REQ_SEND;
1815 }
1816#else
1817 eio_wd_close_sync (wd);
1818#endif
1819}
1820
1821MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1822
1823void
1824cancel (aio_req_ornot req)
1825 CODE:
1826 eio_cancel (req);
1827
1828void
1829cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1830 PPCODE:
1831{
1832 if (GIMME_V != G_VOID)
1833 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1834
1835 if (items > 1)
1836 {
1837 SV *cb_cv =get_cb (callback);
1838
1839 SvREFCNT_dec (req->callback);
1840 req->callback = SvREFCNT_inc (cb_cv);
1841 }
1842}
1843
1844MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1845
1846void
1847add (aio_req grp, ...)
1848 PPCODE:
1849{
1850 int i;
1851
1852 if (grp->int1 == 2)
1853 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1854
1855 for (i = 1; i < items; ++i )
1856 {
1857 aio_req req;
1858
1859 if (GIMME_V != G_VOID)
1860 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1861
1862 req = SvAIO_REQ (ST (i));
1863
1864 if (req)
1865 eio_grp_add (grp, req);
1866 }
1867}
1868
1869void
1870cancel_subs (aio_req_ornot req)
1871 CODE:
1872 req_cancel_subs (req);
1873
1874void
1875result (aio_req grp, ...)
1876 CODE:
1877{
1878 int i;
1879 AV *av;
1880
1881 grp->errorno = errno;
1882
1883 av = newAV ();
1884 av_extend (av, items - 1);
1885
1886 for (i = 1; i < items; ++i )
1887 av_push (av, newSVsv (ST (i)));
1888
1889 SvREFCNT_dec (grp->sv1);
1890 grp->sv1 = (SV *)av;
1891}
1892
1893void
1894errno (aio_req grp, int errorno = errno)
1895 CODE:
1896 grp->errorno = errorno;
1897
1898void
1899limit (aio_req grp, int limit)
1900 CODE:
1901 eio_grp_limit (grp, limit);
1902
1903void
1904feed (aio_req grp, SV *callback=&PL_sv_undef)
1905 CODE:
1906{
1907 SvREFCNT_dec (grp->sv2);
1908 grp->sv2 = newSVsv (callback);
1909 grp->feed = aio_grp_feed;
1910
1911 if (grp->int2 <= 0)
1912 grp->int2 = 2;
1913
1914 eio_grp_limit (grp, grp->int2);
1915}
1916

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