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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.46 by root, Sun Oct 22 00:49:29 2006 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "schmorp.h"
9
10#include <pthread.h>
11 10
12#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 14#include <sys/types.h>
17#include <sys/stat.h> 15#include <sys/stat.h>
18#include <limits.h> 16#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 17#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 18#include <sched.h>
23 19
24#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25# if __linux
26# include <sys/sendfile.h>
27# elif __freebsd
28# include <sys/socket.h>
29# include <sys/uio.h> 21# include <sys/mman.h>
30# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
31# include <sys/socket.h> 86 #include <sys/time.h>
32# elif __solaris /* not yet */
33# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
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
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
34# else 151# else
35# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 153# endif
37#endif 154#endif
38 155
39/* used for struct dirent, AIX doesn't provide it */ 156/* defines all sorts of constants to 0 unless they are already defined */
40#ifndef NAME_MAX 157/* also provides const_iv_ and const_niv_ macros for them */
41# define NAME_MAX 4096 158#include "def0.h"
42#endif
43 159
44#if __ia64 160#ifndef makedev
45# define STACKSIZE 65536 161# define makedev(maj,min) (((maj) << 8) | (min))
46#else
47# define STACKSIZE 8192
48#endif 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
49 169
50enum { 170#if PAGESIZE <= 0
51 REQ_QUIT, 171# define PAGESIZE sysconf (_SC_PAGESIZE)
52 REQ_OPEN, REQ_CLOSE, 172#endif
53 REQ_READ, REQ_WRITE, REQ_READAHEAD,
54 REQ_SENDFILE,
55 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56 REQ_FSYNC, REQ_FDATASYNC,
57 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58 REQ_READDIR,
59 REQ_LINK, REQ_SYMLINK,
60 REQ_SLEEP,
61 REQ_GROUP,
62};
63 173
64#define AIO_REQ_KLASS "IO::AIO::REQ" 174/*****************************************************************************/
65#define AIO_GRP_KLASS "IO::AIO::GRP"
66 175
67typedef struct aio_cb 176static void
177fiemap (eio_req *req)
68{ 178{
69 struct aio_cb *grp, *grp_prev, *grp_next; 179 req->result = -1;
70 180
71 struct aio_cb *volatile next; 181#if HAVE_FIEMAP
182 /* assume some c99 */
183 struct fiemap *fiemap = 0;
184 size_t end_offset;
185 int count = req->int3;
72 186
73 SV *self; /* the perl counterpart of this request, if any */ 187 req->flags |= EIO_FLAG_PTR1_FREE;
74 188
75 SV *data, *callback; 189 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
76 SV *fh, *fh2; 190 /* increase in 3.5kb steps */
77 void *dataptr, *data2ptr; 191 if (count < 0)
78 Stat_t *statdata; 192 count = 8;
79 off_t offset;
80 size_t length;
81 ssize_t result;
82 193
83 int type; 194 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
84 int fd, fd2; 195 errno = ENOMEM;
85 int errorno; 196 if (!fiemap)
86 STRLEN dataoffset; 197 return;
87 mode_t mode; /* open */
88 unsigned char cancelled;
89} aio_cb;
90 198
91typedef aio_cb *aio_req; 199 req->ptr1 = fiemap;
92typedef aio_cb *aio_req_ornot;
93 200
94static int started, wanted; 201 fiemap->fm_start = req->offs;
95static volatile int nreqs; 202 fiemap->fm_length = req->size;
96static int max_outstanding = 1<<30; 203 fiemap->fm_flags = req->int2;
97static int respipe [2]; 204 fiemap->fm_extent_count = count;
98 205
99static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 206 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
100static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 207 return;
101static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102 208
103static volatile aio_req reqs, reqe; /* queue start, queue end */ 209 if (req->int3 >= 0 /* not autosizing */
104static volatile aio_req ress, rese; /* queue start, queue end */ 210 || !fiemap->fm_mapped_extents /* no more extents */
211 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
212 goto done;
105 213
106static void req_free (aio_req req); 214 /* else we have to loop -
215 * it would be tempting (actually I tried that first) to just query the
216 * number of extents needed, but linux often feels like not returning all
217 * extents, without telling us it left any out. this complicates
218 * this quite a bit.
219 */
107 220
108/* must be called at most once */ 221 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
109static SV *req_sv (aio_req req, const char *klass)
110{
111 req->self = (SV *)newHV ();
112 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
113 222
114 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 223 for (;;)
115}
116
117static aio_req SvAIO_REQ (SV *sv)
118{
119 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120 croak ("object of class " AIO_REQ_KLASS " expected");
121
122 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123
124 return mg ? (aio_req)mg->mg_ptr : 0;
125}
126
127static void poll_wait ()
128{
129 if (nreqs && !ress)
130 { 224 {
131 fd_set rfd; 225 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
132 FD_ZERO(&rfd); 226 char scratch[3072];
133 FD_SET(respipe [0], &rfd); 227 struct fiemap *incmap = (struct fiemap *)scratch;
134 228
135 select (respipe [0] + 1, &rfd, 0, 0, 0); 229 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
136 } 230 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
137} 231 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
232 incmap->fm_flags = fiemap->fm_flags;
233 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
138 234
139static void req_invoke (aio_req req) 235 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
140{
141 dSP;
142 int errorno = errno;
143
144 if (req->cancelled || !SvOK (req->callback))
145 return; 236 return;
146 237
147 errno = req->errorno; 238 if (!incmap->fm_mapped_extents)
239 goto done;
148 240
149 ENTER; 241 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
150 PUSHMARK (SP); 242 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
243 errno = ENOMEM;
244 if (!fiemap)
245 return;
151 246
152 switch (req->type) 247 req->ptr1 = fiemap;
153 { 248
154 case REQ_READDIR: 249 for (count = 0; count < incmap->fm_mapped_extents; ++count)
155 { 250 {
156 SV *rv = &PL_sv_undef; 251 struct fiemap_extent *e = incmap->fm_extents + count;
157 252
158 if (req->result >= 0) 253 if (e->fe_logical + e->fe_length >= end_offset)
159 { 254 goto done;
160 char *buf = req->data2ptr;
161 AV *av = newAV ();
162 255
163 while (req->result) 256 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
164 {
165 SV *sv = newSVpv (buf, 0);
166 257
167 av_push (av, sv); 258 if (e->fe_flags & FIEMAP_EXTENT_LAST)
168 buf += SvCUR (sv) + 1; 259 goto done;
169 req->result--;
170 }
171 260
172 rv = sv_2mortal (newRV_noinc ((SV *)av));
173 }
174
175 XPUSHs (rv);
176 }
177 break;
178
179 case REQ_OPEN:
180 {
181 /* convert fd to fh */
182 SV *fh;
183
184 XPUSHs (sv_2mortal (newSViv (req->result)));
185 PUTBACK;
186 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
187 SPAGAIN;
188
189 fh = SvREFCNT_inc (POPs);
190
191 PUSHMARK (SP);
192 XPUSHs (sv_2mortal (fh));
193 }
194 break;
195
196 case REQ_SLEEP:
197 case REQ_GROUP:
198 break;
199
200 default:
201 XPUSHs (sv_2mortal (newSViv (req->result)));
202 break;
203 }
204
205
206 PUTBACK;
207 call_sv (req->callback, G_VOID | G_EVAL);
208 SPAGAIN;
209
210 if (SvTRUE (ERRSV))
211 {
212 req_free (req);
213 croak (0);
214 }
215
216 LEAVE;
217
218 errno = errorno;
219}
220
221static void req_free (aio_req req)
222{
223 if (req->grp)
224 {
225 aio_req grp = req->grp;
226
227 /* unlink request */
228 req->grp_next->grp_prev = req->grp_prev;
229 req->grp_prev->grp_next = req->grp_next;
230
231 if (grp->grp_next == grp && grp->fd)
232 {
233 req_invoke (grp);
234 req_free (grp);
235 } 261 }
236 } 262 }
237 263
264done:
265 req->result = 0;
266
267#else
268 errno = ENOSYS;
269#endif
270}
271
272/*****************************************************************************/
273
274enum {
275 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
276};
277
278typedef eio_req *aio_req;
279typedef eio_req *aio_req_ornot;
280typedef eio_wd aio_wd;
281
282static SV *on_next_submit;
283static int next_pri = EIO_PRI_DEFAULT;
284static int max_outstanding;
285
286static s_epipe respipe;
287
288static void req_destroy (aio_req req);
289static void req_cancel (aio_req req);
290
291static void
292want_poll (void)
293{
294 /* write a dummy byte to the pipe so fh becomes ready */
295 s_epipe_signal (&respipe);
296}
297
298static void
299done_poll (void)
300{
301 /* read any signals sent by the worker threads */
302 s_epipe_drain (&respipe);
303}
304
305/* must be called at most once */
306static SV *
307req_sv (aio_req req, HV *stash)
308{
309 if (!req->self)
310 {
311 req->self = (SV *)newHV ();
312 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
313 }
314
315 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
316}
317
318static SV *
319newSVaio_wd (aio_wd wd)
320{
321 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
322}
323
324static aio_req
325SvAIO_REQ (SV *sv)
326{
327 MAGIC *mg;
328
329 if (!SvROK (sv)
330 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
331 || (SvSTASH (SvRV (sv)) != aio_grp_stash
332 && SvSTASH (SvRV (sv)) != aio_req_stash
333 && !sv_derived_from (sv, "IO::AIO::REQ")))
334 croak ("object of class IO::AIO::REQ expected");
335
336 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
337
338 return mg ? (aio_req)mg->mg_ptr : 0;
339}
340
341static aio_wd
342SvAIO_WD (SV *sv)
343{
344 if (!SvROK (sv)
345 || SvTYPE (SvRV (sv)) != SVt_PVMG
346 || SvSTASH (SvRV (sv)) != aio_wd_stash)
347 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
348
349 return (aio_wd)(long)SvIVX (SvRV (sv));
350}
351
352static SV *
353newmortalFH (int fd, int flags)
354{
355 if (fd < 0)
356 return &PL_sv_undef;
357
358 GV *gv = (GV *)sv_newmortal ();
359 char sym[64];
360 int symlen;
361
362 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
363 gv_init (gv, aio_stash, sym, symlen, 0);
364
365 symlen = snprintf (
366 sym,
367 sizeof (sym),
368 "%s&=%d",
369 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
370 fd
371 );
372
373 return do_open (gv, sym, symlen, 0, 0, 0, 0)
374 ? (SV *)gv : &PL_sv_undef;
375}
376
377static void
378aio_grp_feed (aio_req grp)
379{
380 if (grp->sv2 && SvOK (grp->sv2))
381 {
382 dSP;
383
384 ENTER;
385 SAVETMPS;
386 PUSHMARK (SP);
387 XPUSHs (req_sv (grp, aio_grp_stash));
388 PUTBACK;
389 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
390 SPAGAIN;
391 FREETMPS;
392 LEAVE;
393 }
394}
395
396static void
397req_submit (eio_req *req)
398{
399 eio_submit (req);
400
401 if (expect_false (on_next_submit))
402 {
403 dSP;
404 SV *cb = sv_2mortal (on_next_submit);
405
406 on_next_submit = 0;
407
408 PUSHMARK (SP);
409 PUTBACK;
410 call_sv (cb, G_DISCARD | G_EVAL);
411 }
412}
413
414static int
415req_invoke (eio_req *req)
416{
417 if (req->flags & FLAG_SV2_RO_OFF)
418 SvREADONLY_off (req->sv2);
419
420 if (!EIO_CANCELLED (req) && req->callback)
421 {
422 dSP;
423 static SV *sv_result_cache; /* caches the result integer SV */
424 SV *sv_result;
425
426 ENTER;
427 SAVETMPS;
428 PUSHMARK (SP);
429 EXTEND (SP, 1);
430
431 /* do not recreate the result IV from scratch each time */
432 if (expect_true (sv_result_cache))
433 {
434 sv_result = sv_result_cache; sv_result_cache = 0;
435 SvIV_set (sv_result, req->result);
436 SvIOK_only (sv_result);
437 }
438 else
439 {
440 sv_result = newSViv (req->result);
441 SvREADONLY_on (sv_result);
442 }
443
444 switch (req->type)
445 {
446 case EIO_WD_OPEN:
447 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
448 break;
449
450 case EIO_READDIR:
451 {
452 SV *rv = &PL_sv_undef;
453
454 if (req->result >= 0)
455 {
456 int i;
457 char *names = (char *)req->ptr2;
458 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
459 AV *av = newAV ();
460
461 av_extend (av, req->result - 1);
462
463 for (i = 0; i < req->result; ++i)
464 {
465 if (req->int1 & EIO_READDIR_DENTS)
466 {
467 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
468
469 if (req->int1 & EIO_READDIR_CUSTOM2)
470 {
471 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
472 AV *avent = newAV ();
473
474 av_extend (avent, 2);
475
476 if (!sv_type [ent->type])
477 {
478 sv_type [ent->type] = newSViv (ent->type);
479 SvREADONLY_on (sv_type [ent->type]);
480 }
481
482 av_store (avent, 0, namesv);
483 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
484 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
485
486 av_store (av, i, newRV_noinc ((SV *)avent));
487 }
488 else
489 av_store (av, i, namesv);
490
491 ++ent;
492 }
493 else
494 {
495 SV *name = newSVpv (names, 0);
496 av_store (av, i, name);
497 names += SvCUR (name) + 1;
498 }
499 }
500
501 rv = sv_2mortal (newRV_noinc ((SV *)av));
502 }
503
504 PUSHs (rv);
505
506 if (req->int1 & EIO_READDIR_CUSTOM1)
507 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
508 }
509 break;
510
511 case EIO_OPEN:
512 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
513 break;
514
515 case EIO_STATVFS:
516 case EIO_FSTATVFS:
517 {
518 SV *rv = &PL_sv_undef;
519
520#ifndef _WIN32
521 if (req->result >= 0)
522 {
523 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
524 HV *hv = newHV ();
525 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
526 * chooses to make it a struct.
527 */
528 unsigned long fsid = 0;
529 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
530
531 rv = sv_2mortal (newRV_noinc ((SV *)hv));
532
533 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
534 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
535 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
536 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
537 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
538 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
539 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
540 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
541 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
542 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
543 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
544 }
545#endif
546
547 PUSHs (rv);
548 }
549
550 break;
551
552 case EIO_GROUP:
553 req->int1 = 2; /* mark group as finished */
554
555 if (req->sv1)
556 {
557 int i;
558 AV *av = (AV *)req->sv1;
559
560 EXTEND (SP, AvFILL (av) + 1);
561 for (i = 0; i <= AvFILL (av); ++i)
562 PUSHs (*av_fetch (av, i, 0));
563 }
564 break;
565
566 case EIO_NOP:
567 case EIO_BUSY:
568 break;
569
570 case EIO_READLINK:
571 case EIO_REALPATH:
572 if (req->result > 0)
573 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
574 break;
575
576 case EIO_STAT:
577 case EIO_LSTAT:
578 case EIO_FSTAT:
579 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
580
581 if (!(PL_laststatval = req->result))
582 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
583 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
584
585 PUSHs (sv_result);
586 break;
587
588 case EIO_SEEK:
589 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
590 break;
591
592 case EIO_READ:
593 {
594 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
595 *SvEND (req->sv2) = 0;
596 SvPOK_only (req->sv2);
597 SvSETMAGIC (req->sv2);
598 PUSHs (sv_result);
599 }
600 break;
601
602 case EIO_CUSTOM:
603 if (req->feed == fiemap)
604 {
605#if HAVE_FIEMAP
606 if (!req->result)
607 {
608 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
609
610 if (fiemap->fm_extent_count)
611 {
612 AV *av = newAV ();
613 int i;
614
615 while (fiemap->fm_mapped_extents)
616 {
617 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
618 AV *ext_av = newAV ();
619
620 av_store (ext_av, 3, newSVuv (extent->fe_flags));
621 av_store (ext_av, 2, newSVval64 (extent->fe_length));
622 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
623 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
624
625 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
626 }
627
628 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
629 }
630 else
631 {
632 SvIV_set (sv_result, fiemap->fm_mapped_extents);
633 PUSHs (sv_result);
634 }
635 }
636#endif
637 }
638 else
639 PUSHs (sv_result);
640 break;
641
642 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
643 if (req->result > 0)
644 SvIV_set (sv_result, 0);
645 /* FALLTHROUGH */
646
647 default:
648 PUSHs (sv_result);
649 break;
650 }
651
652 errno = req->errorno;
653
654 PUTBACK;
655 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
656 SPAGAIN;
657
658 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
659 SvREFCNT_dec (sv_result);
660 else
661 sv_result_cache = sv_result;
662
663 FREETMPS;
664 LEAVE;
665
666 PUTBACK;
667 }
668
669 return !!SvTRUE (ERRSV);
670}
671
672static void
673req_destroy (aio_req req)
674{
238 if (req->self) 675 if (req->self)
239 { 676 {
240 sv_unmagic (req->self, PERL_MAGIC_ext); 677 sv_unmagic (req->self, PERL_MAGIC_ext);
241 SvREFCNT_dec (req->self); 678 SvREFCNT_dec (req->self);
242 } 679 }
243 680
244 if (req->data)
245 SvREFCNT_dec (req->data);
246
247 if (req->fh)
248 SvREFCNT_dec (req->fh); 681 SvREFCNT_dec (req->sv1);
249
250 if (req->fh2)
251 SvREFCNT_dec (req->fh2); 682 SvREFCNT_dec (req->sv2);
252 683 SvREFCNT_dec (req->sv3);
253 if (req->statdata) 684 SvREFCNT_dec (req->sv4);
254 Safefree (req->statdata);
255
256 if (req->callback)
257 SvREFCNT_dec (req->callback); 685 SvREFCNT_dec (req->callback);
258 686
259 if (req->type == REQ_READDIR && req->result >= 0)
260 free (req->data2ptr);
261
262 Safefree (req); 687 free (req);
263} 688}
264 689
265static void req_cancel (aio_req req) 690static void
691req_cancel_subs (aio_req grp)
266{ 692{
267 req->cancelled = 1;
268
269 if (req->type == REQ_GROUP) 693 if (grp->type != EIO_GROUP)
694 return;
695
696 SvREFCNT_dec (grp->sv2);
697 grp->sv2 = 0;
698
699 eio_grp_cancel (grp);
700}
701
702static void ecb_cold
703create_respipe (void)
704{
705 if (s_epipe_renew (&respipe))
706 croak ("IO::AIO: unable to initialize result pipe");
707}
708
709static void
710poll_wait (void)
711{
712 while (eio_nreqs ())
270 { 713 {
271 aio_req sub; 714 int size;
272 715
273 for (sub = req->grp_next; sub != req; sub = sub->grp_next) 716 X_LOCK (EIO_POOL->reslock);
274 req_cancel (sub); 717 size = EIO_POOL->res_queue.size;
718 X_UNLOCK (EIO_POOL->reslock);
719
720 if (size)
721 return;
722
723 etp_maybe_start_thread (EIO_POOL);
724
725 s_epipe_wait (&respipe);
275 } 726 }
276} 727}
277 728
278static int poll_cb () 729static int
730poll_cb (void)
279{ 731{
280 dSP;
281 int count = 0;
282 int do_croak = 0;
283 aio_req req;
284
285 for (;;) 732 for (;;)
286 { 733 {
287 pthread_mutex_lock (&reslock); 734 int res = eio_poll ();
288 req = ress;
289 735
290 if (req) 736 if (res > 0)
737 croak (0);
738
739 if (!max_outstanding || max_outstanding > eio_nreqs ())
740 return res;
741
742 poll_wait ();
743 }
744}
745
746static void ecb_cold
747reinit (void)
748{
749 create_respipe ();
750
751 if (eio_init (want_poll, done_poll) < 0)
752 croak ("IO::AIO: unable to initialise eio library");
753}
754
755/*****************************************************************************/
756
757#if !_POSIX_MAPPED_FILES
758# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
759# define munmap(addr,length) EIO_ENOSYS ()
760#endif
761
762#if !_POSIX_MEMORY_PROTECTION
763# define mprotect(addr,len,prot) EIO_ENOSYS ()
764#endif
765
766#define MMAP_MAGIC PERL_MAGIC_ext
767
768static int ecb_cold
769mmap_free (pTHX_ SV *sv, MAGIC *mg)
770{
771 int old_errno = errno;
772 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
773 errno = old_errno;
774
775 mg->mg_obj = 0; /* just in case */
776
777 SvREADONLY_off (sv);
778
779 if (SvPVX (sv) != mg->mg_ptr)
780 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
781
782 SvCUR_set (sv, 0);
783 SvPVX (sv) = 0;
784 SvOK_off (sv);
785
786 return 0;
787}
788
789static MGVTBL mmap_vtbl = {
790 0, 0, 0, 0, mmap_free
791};
792
793/*****************************************************************************/
794
795static SV *
796get_cb (SV *cb_sv)
797{
798 SvGETMAGIC (cb_sv);
799 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
800}
801
802static aio_req ecb_noinline
803dreq (SV *callback)
804{
805 SV *cb_cv;
806 aio_req req;
807 int req_pri = next_pri;
808 next_pri = EIO_PRI_DEFAULT;
809
810 cb_cv = get_cb (callback);
811
812 req = calloc (sizeof (*req), 1);
813 if (!req)
814 croak ("out of memory during eio_req allocation");
815
816 req->callback = SvREFCNT_inc (cb_cv);
817 req->pri = req_pri;
818
819 return req;
820}
821
822#define dREQ \
823 aio_req req = dreq (callback); \
824
825#define REQ_SEND \
826 PUTBACK; \
827 req_submit (req); \
828 SPAGAIN; \
829 \
830 if (GIMME_V != G_VOID) \
831 XPUSHs (req_sv (req, aio_req_stash));
832
833ecb_inline void
834req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
835{
836 if (expect_false (SvROK (path)))
837 {
838 SV *rv = SvRV (path);
839 SV *wdob;
840
841 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
291 { 842 {
292 ress = req->next; 843 path = AvARRAY (rv)[1];
844 wdob = AvARRAY (rv)[0];
293 845
294 if (!ress) 846 if (SvOK (wdob))
295 { 847 {
296 /* read any signals sent by the worker threads */ 848 *wd = SvAIO_WD (wdob);
297 char buf [32]; 849 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
298 while (read (respipe [0], buf, 32) == 32)
299 ;
300
301 rese = 0;
302 } 850 }
851 else
852 *wd = EIO_INVALID_WD;
303 } 853 }
304 854 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
305 pthread_mutex_unlock (&reslock);
306
307 if (!req)
308 break;
309
310 nreqs--;
311
312 if (req->type == REQ_QUIT)
313 started--;
314 else if (req->type == REQ_GROUP && req->grp_next != req)
315 { 855 {
316 req->fd = 1; /* mark request as delayed */ 856 *wd = (aio_wd)(long)SvIVX (rv);
317 continue; 857 *wdsv = SvREFCNT_inc_NN (rv);
858 *ptr = ".";
859 return; /* path set to "." */
318 } 860 }
319 else 861 else
320 { 862 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
321 if (req->type == REQ_READ)
322 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325 SvREADONLY_off (req->data);
326
327 if (req->statdata)
328 {
329 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330 PL_laststatval = req->result;
331 PL_statcache = *(req->statdata);
332 }
333
334 req_invoke (req);
335
336 count++;
337 }
338
339 req_free (req);
340 } 863 }
341 864
342 return count; 865 *pathsv = newSVsv (path);
866 *ptr = SvPVbyte_nolen (*pathsv);
343} 867}
344 868
345static void *aio_proc(void *arg); 869static void ecb_noinline
346 870req_set_path1 (aio_req req, SV *path)
347static void start_thread (void)
348{ 871{
349 sigset_t fullsigset, oldsigset; 872 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
350 pthread_t tid;
351 pthread_attr_t attr;
352
353 pthread_attr_init (&attr);
354 pthread_attr_setstacksize (&attr, STACKSIZE);
355 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357 sigfillset (&fullsigset);
358 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361 started++;
362
363 sigprocmask (SIG_SETMASK, &oldsigset, 0);
364} 873}
365 874
366static void req_send (aio_req req) 875static void ecb_noinline
876req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
367{ 877{
368 while (started < wanted && nreqs >= started) 878 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
369 start_thread ();
370 879
371 nreqs++; 880 switch (SvTYPE (rv))
372
373 pthread_mutex_lock (&reqlock);
374
375 req->next = 0;
376
377 if (reqe)
378 { 881 {
379 reqe->next = req; 882 case SVt_PVIO:
380 reqe = req; 883 case SVt_PVLV:
884 case SVt_PVGV:
885 req->type = type_fh;
886 req->sv1 = newSVsv (fh_or_path);
887 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
888 break;
889
890 default:
891 req->type = type_path;
892 req_set_path1 (req, fh_or_path);
893 break;
381 } 894 }
382 else
383 reqe = reqs = req;
384
385 pthread_cond_signal (&reqwait);
386 pthread_mutex_unlock (&reqlock);
387
388 if (nreqs > max_outstanding)
389 for (;;)
390 {
391 poll_cb ();
392
393 if (nreqs <= max_outstanding)
394 break;
395
396 poll_wait ();
397 }
398} 895}
399 896
400static void end_thread (void) 897XS(boot_IO__AIO) ecb_cold;
401{
402 aio_req req;
403 Newz (0, req, 1, aio_cb);
404 req->type = REQ_QUIT;
405 898
406 req_send (req); 899MODULE = IO::AIO PACKAGE = IO::AIO
407}
408 900
409static void min_parallel (int nthreads) 901PROTOTYPES: ENABLE
410{
411 if (wanted < nthreads)
412 wanted = nthreads;
413}
414 902
415static void max_parallel (int nthreads) 903BOOT:
416{ 904{
417 int cur = started; 905 static const struct {
906 const char *name;
907 IV iv;
908 } *civ, const_iv[] = {
909# define const_niv(name, value) { # name, (IV) value },
910# define const_iv(name) { # name, (IV) name },
911# define const_eio(name) { # name, (IV) EIO_ ## name },
418 912
419 if (wanted > nthreads) 913 /* you have to re-run ./gendef0 after adding/removing any constants here */
420 wanted = nthreads; 914 /* the first block can be undef if missing */
915 const_iv (ENOSYS)
916 const_iv (EXDEV)
917 const_iv (EBADR)
421 918
422 while (cur > wanted) 919 /* for lseek */
423 { 920 const_iv (SEEK_DATA)
424 end_thread (); 921 const_iv (SEEK_HOLE)
425 cur--;
426 }
427 922
428 while (started > wanted) 923 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
429 { 924 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
430 poll_wait (); 925 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
431 poll_cb (); 926 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
432 } 927 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
433} 928 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
434 929
435static void create_pipe () 930 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
436{ 931 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
437 if (pipe (respipe)) 932 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
438 croak ("unable to initialize result pipe"); 933 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
934 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
439 935
440 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 936 /* the second block will be 0 when missing */
441 croak ("cannot set result pipe to nonblocking mode"); 937 const_iv (O_RDONLY)
938 const_iv (O_WRONLY)
939 const_iv (O_RDWR)
940 const_iv (O_CREAT)
941 const_iv (O_TRUNC)
942 const_iv (O_EXCL)
943 const_iv (O_APPEND)
442 944
443 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 945 const_iv (O_ASYNC)
444 croak ("cannot set result pipe to nonblocking mode"); 946 const_iv (O_DIRECT)
445} 947 const_iv (O_NOATIME)
446 948
447/*****************************************************************************/ 949 const_iv (O_CLOEXEC)
448/* work around various missing functions */ 950 const_iv (O_NOCTTY)
951 const_iv (O_NOFOLLOW)
952 const_iv (O_NONBLOCK)
953 const_iv (O_EXEC)
954 const_iv (O_SEARCH)
955 const_iv (O_DIRECTORY)
956 const_iv (O_DSYNC)
957 const_iv (O_RSYNC)
958 const_iv (O_SYNC)
959 const_iv (O_PATH)
960 const_iv (O_TMPFILE)
961 const_iv (O_TTY_INIT)
449 962
450#if !HAVE_PREADWRITE 963 const_iv (S_IFIFO)
451# define pread aio_pread 964 const_iv (S_IFCHR)
452# define pwrite aio_pwrite 965 const_iv (S_IFBLK)
966 const_iv (S_IFLNK)
967 const_iv (S_IFREG)
968 const_iv (S_IFDIR)
969 const_iv (S_IFWHT)
970 const_iv (S_IFSOCK)
971 const_iv (S_IFMT)
453 972
454/* 973 const_iv (ST_RDONLY)
455 * make our pread/pwrite safe against themselves, but not against 974 const_iv (ST_NOSUID)
456 * normal read/write by using a mutex. slows down execution a lot, 975 const_iv (ST_NODEV)
457 * but that's your problem, not mine. 976 const_iv (ST_NOEXEC)
458 */ 977 const_iv (ST_SYNCHRONOUS)
459static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; 978 const_iv (ST_MANDLOCK)
979 const_iv (ST_WRITE)
980 const_iv (ST_APPEND)
981 const_iv (ST_IMMUTABLE)
982 const_iv (ST_NOATIME)
983 const_iv (ST_NODIRATIME)
984 const_iv (ST_RELATIME)
460 985
461static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 986 const_iv (PROT_NONE)
462{ 987 const_iv (PROT_EXEC)
463 ssize_t res; 988 const_iv (PROT_READ)
464 off_t ooffset; 989 const_iv (PROT_WRITE)
465 990
466 pthread_mutex_lock (&preadwritelock); 991 const_iv (MAP_PRIVATE)
467 ooffset = lseek (fd, 0, SEEK_CUR); 992 const_iv (MAP_SHARED)
468 lseek (fd, offset, SEEK_SET); 993 const_iv (MAP_FIXED)
469 res = read (fd, buf, count); 994 const_iv (MAP_ANONYMOUS)
470 lseek (fd, ooffset, SEEK_SET);
471 pthread_mutex_unlock (&preadwritelock);
472 995
473 return res; 996 /* linuxish */
474} 997 const_iv (MAP_LOCKED)
998 const_iv (MAP_NORESERVE)
999 const_iv (MAP_POPULATE)
1000 const_iv (MAP_NONBLOCK)
1001 const_iv (MAP_GROWSDOWN)
1002 const_iv (MAP_32BIT)
1003 const_iv (MAP_HUGETLB)
1004 const_iv (MAP_STACK)
475 1005
476static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1006 const_iv (F_DUPFD_CLOEXEC)
477{
478 ssize_t res;
479 off_t ooffset;
480 1007
481 pthread_mutex_lock (&preadwritelock); 1008 const_iv (F_OFD_GETLK)
482 ooffset = lseek (fd, 0, SEEK_CUR); 1009 const_iv (F_OFD_SETLK)
483 lseek (fd, offset, SEEK_SET); 1010 const_iv (F_OFD_GETLKW)
484 res = write (fd, buf, count);
485 lseek (fd, offset, SEEK_SET);
486 pthread_mutex_unlock (&preadwritelock);
487 1011
488 return res; 1012 const_iv (FIFREEZE)
489} 1013 const_iv (FITHAW)
490#endif 1014 const_iv (FITRIM)
1015 const_iv (FICLONE)
1016 const_iv (FICLONERANGE)
1017 const_iv (FIDEDUPERANGE)
491 1018
492#if !HAVE_FDATASYNC 1019 const_iv (FS_IOC_GETFLAGS)
493# define fdatasync fsync 1020 const_iv (FS_IOC_SETFLAGS)
494#endif 1021 const_iv (FS_IOC_GETVERSION)
1022 const_iv (FS_IOC_SETVERSION)
1023 const_iv (FS_IOC_FIEMAP)
1024 const_iv (FS_IOC_FSGETXATTR)
1025 const_iv (FS_IOC_FSSETXATTR)
1026 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1027 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1028 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
495 1029
496#if !HAVE_READAHEAD 1030 const_iv (FS_KEY_DESCRIPTOR_SIZE)
497# define readahead aio_readahead
498 1031
499static ssize_t readahead (int fd, off_t offset, size_t count) 1032 const_iv (FS_SECRM_FL)
500{ 1033 const_iv (FS_UNRM_FL)
501 char readahead_buf[4096]; 1034 const_iv (FS_COMPR_FL)
1035 const_iv (FS_SYNC_FL)
1036 const_iv (FS_IMMUTABLE_FL)
1037 const_iv (FS_APPEND_FL)
1038 const_iv (FS_NODUMP_FL)
1039 const_iv (FS_NOATIME_FL)
1040 const_iv (FS_DIRTY_FL)
1041 const_iv (FS_COMPRBLK_FL)
1042 const_iv (FS_NOCOMP_FL)
1043 const_iv (FS_ENCRYPT_FL)
1044 const_iv (FS_BTREE_FL)
1045 const_iv (FS_INDEX_FL)
1046 const_iv (FS_JOURNAL_DATA_FL)
1047 const_iv (FS_NOTAIL_FL)
1048 const_iv (FS_DIRSYNC_FL)
1049 const_iv (FS_TOPDIR_FL)
1050 const_iv (FS_FL_USER_MODIFIABLE)
502 1051
503 while (count > 0) 1052 const_iv (FS_XFLAG_REALTIME)
504 { 1053 const_iv (FS_XFLAG_PREALLOC)
505 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 1054 const_iv (FS_XFLAG_IMMUTABLE)
1055 const_iv (FS_XFLAG_APPEND)
1056 const_iv (FS_XFLAG_SYNC)
1057 const_iv (FS_XFLAG_NOATIME)
1058 const_iv (FS_XFLAG_NODUMP)
1059 const_iv (FS_XFLAG_RTINHERIT)
1060 const_iv (FS_XFLAG_PROJINHERIT)
1061 const_iv (FS_XFLAG_NOSYMLINKS)
1062 const_iv (FS_XFLAG_EXTSIZE)
1063 const_iv (FS_XFLAG_EXTSZINHERIT)
1064 const_iv (FS_XFLAG_NODEFRAG)
1065 const_iv (FS_XFLAG_FILESTREAM)
1066 const_iv (FS_XFLAG_DAX)
1067 const_iv (FS_XFLAG_HASATTR)
506 1068
507 pread (fd, readahead_buf, len, offset); 1069 const_iv (FIEMAP_FLAG_SYNC)
508 offset += len; 1070 const_iv (FIEMAP_FLAG_XATTR)
509 count -= len; 1071 const_iv (FIEMAP_FLAGS_COMPAT)
510 } 1072 const_iv (FIEMAP_EXTENT_LAST)
1073 const_iv (FIEMAP_EXTENT_UNKNOWN)
1074 const_iv (FIEMAP_EXTENT_DELALLOC)
1075 const_iv (FIEMAP_EXTENT_ENCODED)
1076 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1077 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1078 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1079 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1080 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1081 const_iv (FIEMAP_EXTENT_MERGED)
1082 const_iv (FIEMAP_EXTENT_SHARED)
511 1083
512 errno = 0; 1084 const_iv (SPLICE_F_MOVE)
513} 1085 const_iv (SPLICE_F_NONBLOCK)
514#endif 1086 const_iv (SPLICE_F_MORE)
1087 const_iv (SPLICE_F_GIFT)
515 1088
516#if !HAVE_READDIR_R 1089 /* these are libeio constants, and are independent of gendef0 */
517# define readdir_r aio_readdir_r 1090 const_eio (SEEK_SET)
1091 const_eio (SEEK_CUR)
1092 const_eio (SEEK_END)
518 1093
519static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 1094 const_eio (MCL_FUTURE)
520 1095 const_eio (MCL_CURRENT)
521static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
522{
523 struct dirent *e;
524 int errorno;
525 1096
526 pthread_mutex_lock (&readdirlock); 1097 const_eio (MS_ASYNC)
1098 const_eio (MS_INVALIDATE)
1099 const_eio (MS_SYNC)
527 1100
528 e = readdir (dirp); 1101 const_eio (MT_MODIFY)
529 errorno = errno;
530 1102
531 if (e) 1103 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
532 { 1104 const_eio (SYNC_FILE_RANGE_WRITE)
533 *res = ent; 1105 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
534 strcpy (ent->d_name, e->d_name);
535 }
536 else
537 *res = 0;
538 1106
539 pthread_mutex_unlock (&readdirlock); 1107 const_eio (FALLOC_FL_KEEP_SIZE)
1108 const_eio (FALLOC_FL_PUNCH_HOLE)
1109 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1110 const_eio (FALLOC_FL_ZERO_RANGE)
1111 const_eio (FALLOC_FL_INSERT_RANGE)
1112 const_eio (FALLOC_FL_UNSHARE_RANGE)
540 1113
541 errno = errorno; 1114 const_eio (RENAME_NOREPLACE)
542 return e ? 0 : -1; 1115 const_eio (RENAME_EXCHANGE)
543} 1116 const_eio (RENAME_WHITEOUT)
544#endif
545 1117
546/* sendfile always needs emulation */ 1118 const_eio (READDIR_DENTS)
547static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1119 const_eio (READDIR_DIRS_FIRST)
548{ 1120 const_eio (READDIR_STAT_ORDER)
549 ssize_t res; 1121 const_eio (READDIR_FOUND_UNKNOWN)
550 1122
551 if (!count) 1123 const_eio (DT_UNKNOWN)
552 return 0; 1124 const_eio (DT_FIFO)
553 1125 const_eio (DT_CHR)
554#if HAVE_SENDFILE 1126 const_eio (DT_DIR)
555# if __linux 1127 const_eio (DT_BLK)
556 res = sendfile (ofd, ifd, &offset, count); 1128 const_eio (DT_REG)
557 1129 const_eio (DT_LNK)
558# elif __freebsd 1130 const_eio (DT_SOCK)
559 /* 1131 const_eio (DT_WHT)
560 * Of course, the freebsd sendfile is a dire hack with no thoughts
561 * wasted on making it similar to other I/O functions.
562 */
563 {
564 off_t sbytes;
565 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566
567 if (res < 0 && sbytes)
568 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
569 res = sbytes;
570 } 1132 };
571 1133
572# elif __hpux 1134 aio_stash = gv_stashpv ("IO::AIO" , 1);
573 res = sendfile (ofd, ifd, offset, count, 0, 0); 1135 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1136 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1137 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
574 1138
575# elif __solaris 1139 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
576 { 1140 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
577 struct sendfilevec vec;
578 size_t sbytes;
579 1141
580 vec.sfv_fd = ifd; 1142 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
581 vec.sfv_flag = 0;
582 vec.sfv_off = offset;
583 vec.sfv_len = count;
584 1143
585 res = sendfilev (ofd, &vec, 1, &sbytes); 1144 reinit ();
1145}
586 1146
587 if (res < 0 && sbytes) 1147void
1148reinit ()
1149 PROTOTYPE:
1150
1151void
1152max_poll_reqs (unsigned int nreqs)
1153 PROTOTYPE: $
1154 CODE:
1155 eio_set_max_poll_reqs (nreqs);
1156
1157void
1158max_poll_time (double nseconds)
1159 PROTOTYPE: $
1160 CODE:
1161 eio_set_max_poll_time (nseconds);
1162
1163void
1164min_parallel (unsigned int nthreads)
1165 PROTOTYPE: $
1166 CODE:
1167 eio_set_min_parallel (nthreads);
1168
1169void
1170max_parallel (unsigned int nthreads)
1171 PROTOTYPE: $
1172 CODE:
1173 eio_set_max_parallel (nthreads);
1174
1175void
1176max_idle (unsigned int nthreads)
1177 PROTOTYPE: $
1178 CODE:
1179 eio_set_max_idle (nthreads);
1180
1181void
1182idle_timeout (unsigned int seconds)
1183 PROTOTYPE: $
1184 CODE:
1185 eio_set_idle_timeout (seconds);
1186
1187void
1188max_outstanding (unsigned int maxreqs)
1189 PROTOTYPE: $
1190 CODE:
1191 max_outstanding = maxreqs;
1192
1193void
1194aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1195 PPCODE:
1196{
1197 dREQ;
1198
1199 req->type = EIO_WD_OPEN;
1200 req_set_path1 (req, pathname);
1201
1202 REQ_SEND;
1203}
1204
1205void
1206aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1207 PPCODE:
1208{
1209 dREQ;
1210
1211 req->type = EIO_OPEN;
1212 req_set_path1 (req, pathname);
1213 req->int1 = flags;
1214 req->int2 = mode;
1215
1216 REQ_SEND;
1217}
1218
1219void
1220aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1221 ALIAS:
1222 aio_fsync = EIO_FSYNC
1223 aio_fdatasync = EIO_FDATASYNC
1224 aio_syncfs = EIO_SYNCFS
1225 PPCODE:
1226{
1227 int fd = s_fileno_croak (fh, 0);
1228 dREQ;
1229
1230 req->type = ix;
1231 req->sv1 = newSVsv (fh);
1232 req->int1 = fd;
1233
1234 REQ_SEND;
1235}
1236
1237void
1238aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1239 PPCODE:
1240{
1241 int fd = s_fileno_croak (fh, 0);
1242 dREQ;
1243
1244 req->type = EIO_SYNC_FILE_RANGE;
1245 req->sv1 = newSVsv (fh);
1246 req->int1 = fd;
1247 req->offs = offset;
588 res = sbytes; 1248 req->size = nbytes;
589 } 1249 req->int2 = flags;
590 1250
591# endif 1251 REQ_SEND;
1252}
1253
1254void
1255aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1256 PPCODE:
1257{
1258 int fd = s_fileno_croak (fh, 0);
1259 dREQ;
1260
1261 req->type = EIO_FALLOCATE;
1262 req->sv1 = newSVsv (fh);
1263 req->int1 = fd;
1264 req->int2 = mode;
1265 req->offs = offset;
1266 req->size = len;
1267
1268 REQ_SEND;
1269}
1270
1271void
1272aio_close (SV *fh, SV *callback = &PL_sv_undef)
1273 PPCODE:
1274{
1275 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1276 int fd = s_fileno_croak (fh, 0);
1277 dREQ;
1278
1279 if (expect_false (close_fd < 0))
1280 {
1281 int pipefd [2];
1282
1283 if (
1284#ifdef _WIN32
1285 _pipe (pipefd, 1, _O_BINARY) < 0
592#else 1286#else
593 res = -1; 1287 pipe (pipefd) < 0
594 errno = ENOSYS; 1288 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
595#endif 1289#endif
596 1290 || close (pipefd [1]) < 0
597 if (res < 0
598 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
599#if __solaris
600 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
601#endif
602 )
603 )
604 {
605 /* emulate sendfile. this is a major pain in the ass */
606 char buf[4096];
607 res = 0;
608
609 while (count)
610 {
611 ssize_t cnt;
612
613 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
614
615 if (cnt <= 0)
616 { 1291 )
617 if (cnt && !res) res = -1; 1292 abort (); /*D*/
618 break;
619 }
620 1293
621 cnt = write (ofd, buf, cnt); 1294 close_fd = pipefd [0];
622
623 if (cnt <= 0)
624 {
625 if (cnt && !res) res = -1;
626 break;
627 }
628
629 offset += cnt;
630 res += cnt;
631 count -= cnt;
632 }
633 }
634
635 return res;
636}
637
638/* read a full directory */
639static int scandir_ (const char *path, void **namesp)
640{
641 DIR *dirp = opendir (path);
642 union
643 {
644 struct dirent d;
645 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646 } u;
647 struct dirent *entp;
648 char *name, *names;
649 int memlen = 4096;
650 int memofs = 0;
651 int res = 0;
652 int errorno;
653
654 if (!dirp)
655 return -1;
656
657 names = malloc (memlen);
658
659 for (;;)
660 {
661 errno = 0, readdir_r (dirp, &u.d, &entp);
662
663 if (!entp)
664 break;
665
666 name = entp->d_name;
667
668 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669 {
670 int len = strlen (name) + 1;
671
672 res++;
673
674 while (memofs + len > memlen)
675 {
676 memlen *= 2;
677 names = realloc (names, memlen);
678 if (!names)
679 break;
680 }
681
682 memcpy (names + memofs, name, len);
683 memofs += len;
684 }
685 }
686
687 errorno = errno;
688 closedir (dirp);
689
690 if (errorno)
691 {
692 free (names);
693 errno = errorno;
694 res = -1;
695 }
696
697 *namesp = (void *)names;
698 return res;
699}
700
701/*****************************************************************************/
702
703static void *aio_proc (void *thr_arg)
704{
705 aio_req req;
706 int type;
707
708 do
709 {
710 pthread_mutex_lock (&reqlock);
711
712 for (;;)
713 {
714 req = reqs;
715
716 if (reqs)
717 {
718 reqs = reqs->next;
719 if (!reqs) reqe = 0;
720 }
721
722 if (req)
723 break;
724
725 pthread_cond_wait (&reqwait, &reqlock);
726 }
727
728 pthread_mutex_unlock (&reqlock);
729
730 errno = 0; /* strictly unnecessary */
731
732 if (!req->cancelled)
733 switch (req->type)
734 {
735 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
736 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
737
738 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
739 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
740
741 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
742 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
743 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
744
745 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
746 case REQ_CLOSE: req->result = close (req->fd); break;
747 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
748 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
749 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
750 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
751 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
752
753 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754 case REQ_FSYNC: req->result = fsync (req->fd); break;
755 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
756
757 case REQ_SLEEP:
758 {
759 struct timeval tv;
760
761 tv.tv_sec = req->fd;
762 tv.tv_usec = req->fd2;
763
764 req->result = select (0, 0, 0, 0, &tv);
765 }
766
767 case REQ_QUIT:
768 break;
769
770 default:
771 req->result = ENOSYS;
772 break;
773 } 1295 }
774 1296
775 req->errorno = errno; 1297 req->type = EIO_DUP2;
776 1298 req->int1 = close_fd;
777 pthread_mutex_lock (&reslock); 1299 req->sv2 = newSVsv (fh);
778
779 req->next = 0; 1300 req->int2 = fd;
780 1301
781 if (rese) 1302 REQ_SEND;
782 {
783 rese->next = req;
784 rese = req;
785 }
786 else
787 {
788 rese = ress = req;
789
790 /* write a dummy byte to the pipe so fh becomes ready */
791 write (respipe [1], &respipe, 1);
792 }
793
794 pthread_mutex_unlock (&reslock);
795 }
796 while (type != REQ_QUIT);
797
798 return 0;
799} 1303}
800 1304
801/*****************************************************************************/
802
803static void atfork_prepare (void)
804{
805 pthread_mutex_lock (&reqlock);
806 pthread_mutex_lock (&reslock);
807#if !HAVE_PREADWRITE
808 pthread_mutex_lock (&preadwritelock);
809#endif
810#if !HAVE_READDIR_R
811 pthread_mutex_lock (&readdirlock);
812#endif
813}
814
815static void atfork_parent (void)
816{
817#if !HAVE_READDIR_R
818 pthread_mutex_unlock (&readdirlock);
819#endif
820#if !HAVE_PREADWRITE
821 pthread_mutex_unlock (&preadwritelock);
822#endif
823 pthread_mutex_unlock (&reslock);
824 pthread_mutex_unlock (&reqlock);
825}
826
827static void atfork_child (void)
828{
829 aio_req prv;
830
831 started = 0;
832
833 while (reqs)
834 {
835 prv = reqs;
836 reqs = prv->next;
837 req_free (prv);
838 }
839
840 reqs = reqe = 0;
841
842 while (ress)
843 {
844 prv = ress;
845 ress = prv->next;
846 req_free (prv);
847 }
848
849 ress = rese = 0;
850
851 close (respipe [0]);
852 close (respipe [1]);
853 create_pipe ();
854
855 atfork_parent ();
856}
857
858#define dREQ \
859 aio_req req; \
860 \
861 if (SvOK (callback) && !SvROK (callback)) \
862 croak ("callback must be undef or of reference type"); \
863 \
864 Newz (0, req, 1, aio_cb); \
865 if (!req) \
866 croak ("out of memory during aio_req allocation"); \
867 \
868 req->callback = newSVsv (callback)
869
870#define REQ_SEND \
871 req_send (req); \
872 \
873 if (GIMME_V != G_VOID) \
874 XPUSHs (req_sv (req, AIO_REQ_KLASS));
875
876MODULE = IO::AIO PACKAGE = IO::AIO
877
878PROTOTYPES: ENABLE
879
880BOOT:
881{
882 HV *stash = gv_stashpv ("IO::AIO", 1);
883 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
884 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
885 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
886
887 create_pipe ();
888 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
889}
890
891void 1305void
892min_parallel (nthreads) 1306aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
893 int nthreads
894 PROTOTYPE: $
895
896void
897max_parallel (nthreads)
898 int nthreads
899 PROTOTYPE: $
900
901int
902max_outstanding (nreqs)
903 int nreqs
904 PROTOTYPE: $
905 CODE: 1307 PPCODE:
906 RETVAL = max_outstanding;
907 max_outstanding = nreqs;
908
909void
910aio_open (pathname,flags,mode,callback=&PL_sv_undef)
911 SV * pathname
912 int flags
913 int mode
914 SV * callback
915 PROTOTYPE: $$$;$
916 PPCODE:
917{ 1308{
1309 int fd = s_fileno_croak (fh, 0);
918 dREQ; 1310 dREQ;
919 1311
920 req->type = REQ_OPEN; 1312 req->type = EIO_SEEK;
921 req->data = newSVsv (pathname); 1313 req->sv1 = newSVsv (fh);
922 req->dataptr = SvPVbyte_nolen (req->data); 1314 req->int1 = fd;
923 req->fd = flags; 1315 req->offs = SvVAL64 (offset);
924 req->mode = mode; 1316 req->int2 = whence;
925 1317
926 REQ_SEND; 1318 REQ_SEND;
927} 1319}
928 1320
929void 1321void
930aio_close (fh,callback=&PL_sv_undef) 1322aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
931 SV * fh
932 SV * callback
933 PROTOTYPE: $;$
934 ALIAS: 1323 ALIAS:
935 aio_close = REQ_CLOSE
936 aio_fsync = REQ_FSYNC
937 aio_fdatasync = REQ_FDATASYNC
938 PPCODE:
939{
940 dREQ;
941
942 req->type = ix;
943 req->fh = newSVsv (fh);
944 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
945
946 REQ_SEND (req);
947}
948
949void
950aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
951 SV * fh
952 UV offset
953 UV length
954 SV * data
955 UV dataoffset
956 SV * callback
957 ALIAS:
958 aio_read = REQ_READ 1324 aio_read = EIO_READ
959 aio_write = REQ_WRITE 1325 aio_write = EIO_WRITE
960 PROTOTYPE: $$$$$;$
961 PPCODE: 1326 PPCODE:
962{ 1327{
963 aio_req req;
964 STRLEN svlen; 1328 STRLEN svlen;
1329 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
965 char *svptr = SvPVbyte (data, svlen); 1330 char *svptr = SvPVbyte (data, svlen);
966 1331 UV len = SvUV (length);
967 SvUPGRADE (data, SVt_PV);
968 SvPOK_on (data);
969 1332
970 if (dataoffset < 0) 1333 if (dataoffset < 0)
971 dataoffset += svlen; 1334 dataoffset += svlen;
972 1335
973 if (dataoffset < 0 || dataoffset > svlen) 1336 if (dataoffset < 0 || dataoffset > svlen)
974 croak ("data offset outside of string"); 1337 croak ("dataoffset outside of data scalar");
975 1338
976 if (ix == REQ_WRITE) 1339 if (ix == EIO_WRITE)
977 { 1340 {
978 /* write: check length and adjust. */ 1341 /* write: check length and adjust. */
979 if (length < 0 || length + dataoffset > svlen) 1342 if (!SvOK (length) || len + dataoffset > svlen)
980 length = svlen - dataoffset; 1343 len = svlen - dataoffset;
981 } 1344 }
982 else 1345 else
983 { 1346 {
984 /* read: grow scalar as necessary */ 1347 /* read: check type and grow scalar as necessary */
1348 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
985 svptr = SvGROW (data, length + dataoffset); 1349 svptr = sv_grow (data, len + dataoffset + 1);
1350 else if (SvCUR (data) < len + dataoffset)
1351 croak ("length + dataoffset outside of scalar, and cannot grow");
986 } 1352 }
987
988 if (length < 0)
989 croak ("length must not be negative");
990 1353
991 { 1354 {
992 dREQ; 1355 dREQ;
993 1356
994 req->type = ix; 1357 req->type = ix;
995 req->fh = newSVsv (fh); 1358 req->sv1 = newSVsv (fh);
996 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1359 req->int1 = fd;
997 : IoOFP (sv_2io (fh))); 1360 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998 req->offset = offset; 1361 req->size = len;
999 req->length = length;
1000 req->data = SvREFCNT_inc (data); 1362 req->sv2 = SvREFCNT_inc (data);
1001 req->dataptr = (char *)svptr + dataoffset; 1363 req->ptr2 = (char *)svptr + dataoffset;
1364 req->stroffset = dataoffset;
1002 1365
1003 if (!SvREADONLY (data)) 1366 if (!SvREADONLY (data))
1004 { 1367 {
1005 SvREADONLY_on (data); 1368 SvREADONLY_on (data);
1006 req->data2ptr = (void *)data; 1369 req->flags |= FLAG_SV2_RO_OFF;
1007 } 1370 }
1008 1371
1009 REQ_SEND; 1372 REQ_SEND;
1010 } 1373 }
1011} 1374}
1012 1375
1013void 1376void
1014aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1377aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1015 SV * out_fh 1378 ALIAS:
1016 SV * in_fh 1379 aio_ioctl = EIO_IOCTL
1017 UV in_offset 1380 aio_fcntl = EIO_FCNTL
1018 UV length
1019 SV * callback
1020 PROTOTYPE: $$$$;$
1021 PPCODE: 1381 PPCODE:
1022{ 1382{
1023 dREQ; 1383 int fd = s_fileno_croak (fh, 0);
1384 char *svptr;
1024 1385
1025 req->type = REQ_SENDFILE; 1386 if (SvPOK (arg) || !SvNIOK (arg))
1026 req->fh = newSVsv (out_fh);
1027 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1028 req->fh2 = newSVsv (in_fh);
1029 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1030 req->offset = in_offset;
1031 req->length = length;
1032
1033 REQ_SEND;
1034}
1035
1036void
1037aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1038 SV * fh
1039 UV offset
1040 IV length
1041 SV * callback
1042 PROTOTYPE: $$$;$
1043 PPCODE:
1044{
1045 dREQ;
1046
1047 req->type = REQ_READAHEAD;
1048 req->fh = newSVsv (fh);
1049 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1050 req->offset = offset;
1051 req->length = length;
1052
1053 REQ_SEND;
1054}
1055
1056void
1057aio_stat (fh_or_path,callback=&PL_sv_undef)
1058 SV * fh_or_path
1059 SV * callback
1060 ALIAS:
1061 aio_stat = REQ_STAT
1062 aio_lstat = REQ_LSTAT
1063 PPCODE:
1064{
1065 dREQ;
1066
1067 New (0, req->statdata, 1, Stat_t);
1068 if (!req->statdata)
1069 { 1387 {
1070 req_free (req); 1388 STRLEN svlen;
1071 croak ("out of memory during aio_req->statdata allocation"); 1389 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1072 } 1390#ifdef IOCPARM_LEN
1391 STRLEN need = IOCPARM_LEN (request);
1392#else
1393 STRLEN need = 256;
1394#endif
1073 1395
1074 if (SvPOK (fh_or_path)) 1396 if (svlen < need)
1075 { 1397 svptr = SvGROW (arg, need);
1076 req->type = ix;
1077 req->data = newSVsv (fh_or_path);
1078 req->dataptr = SvPVbyte_nolen (req->data);
1079 } 1398 }
1080 else 1399 else
1400 svptr = (char *)SvIV (arg);
1401
1081 { 1402 {
1403 dREQ;
1404
1082 req->type = REQ_FSTAT; 1405 req->type = ix;
1083 req->fh = newSVsv (fh_or_path); 1406 req->sv1 = newSVsv (fh);
1084 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1407 req->int1 = fd;
1408 req->int2 = (long)request;
1409 req->sv2 = SvREFCNT_inc (arg);
1410 req->ptr2 = svptr;
1411
1412 REQ_SEND;
1085 } 1413 }
1414}
1415
1416void
1417aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1418 ALIAS:
1419 aio_readlink = EIO_READLINK
1420 aio_realpath = EIO_REALPATH
1421 PPCODE:
1422{
1423 dREQ;
1424
1425 req->type = ix;
1426 req_set_path1 (req, pathname);
1086 1427
1087 REQ_SEND; 1428 REQ_SEND;
1088} 1429}
1089 1430
1090void 1431void
1091aio_unlink (pathname,callback=&PL_sv_undef) 1432aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1092 SV * pathname 1433 PPCODE:
1093 SV * callback 1434{
1435 int ifd = s_fileno_croak (in_fh , 0);
1436 int ofd = s_fileno_croak (out_fh, 1);
1437 dREQ;
1438
1439 req->type = EIO_SENDFILE;
1440 req->sv1 = newSVsv (out_fh);
1441 req->int1 = ofd;
1442 req->sv2 = newSVsv (in_fh);
1443 req->int2 = ifd;
1444 req->offs = in_offset;
1445 req->size = length;
1446
1447 REQ_SEND;
1448}
1449
1450void
1451aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1452 PPCODE:
1453{
1454 int fd = s_fileno_croak (fh, 0);
1455 dREQ;
1456
1457 req->type = EIO_READAHEAD;
1458 req->sv1 = newSVsv (fh);
1459 req->int1 = fd;
1460 req->offs = offset;
1461 req->size = length;
1462
1463 REQ_SEND;
1464}
1465
1466void
1467aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1094 ALIAS: 1468 ALIAS:
1469 aio_stat = EIO_STAT
1470 aio_lstat = EIO_LSTAT
1471 aio_statvfs = EIO_STATVFS
1472 PPCODE:
1473{
1474 dREQ;
1475
1476 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1477
1478 REQ_SEND;
1479}
1480
1481UV
1482major (UV dev)
1483 ALIAS:
1484 minor = 1
1485 CODE:
1486 RETVAL = ix ? minor (dev) : major (dev);
1487 OUTPUT:
1488 RETVAL
1489
1490UV
1491makedev (UV maj, UV min)
1492 CODE:
1493 RETVAL = makedev (maj, min);
1494 OUTPUT:
1495 RETVAL
1496
1497void
1498aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1499 PPCODE:
1500{
1501 dREQ;
1502
1503 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1504 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1505 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1506
1507 REQ_SEND;
1508}
1509
1510void
1511aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1512 PPCODE:
1513{
1514 dREQ;
1515
1516 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1517 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1524 PPCODE:
1525{
1526 dREQ;
1527
1528 req->int2 = mode;
1529 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1530
1531 REQ_SEND;
1532}
1533
1534void
1535aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1536 PPCODE:
1537{
1538 dREQ;
1539
1540 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1541 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1542 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1543
1544 REQ_SEND;
1545}
1546
1547void
1548aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1549 PPCODE:
1550{
1551 dREQ;
1552
1553 req->type = EIO_READDIR;
1554 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1555
1556 if (flags & EIO_READDIR_DENTS)
1557 req->int1 |= EIO_READDIR_CUSTOM2;
1558
1559 req_set_path1 (req, pathname);
1560
1561 REQ_SEND;
1562}
1563
1564void
1565aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1566 PPCODE:
1567{
1568 dREQ;
1569
1570 req->type = EIO_MKDIR;
1571 req->int2 = mode;
1572 req_set_path1 (req, pathname);
1573
1574 REQ_SEND;
1575}
1576
1577void
1578aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1579 ALIAS:
1095 aio_unlink = REQ_UNLINK 1580 aio_unlink = EIO_UNLINK
1096 aio_rmdir = REQ_RMDIR 1581 aio_rmdir = EIO_RMDIR
1097 aio_readdir = REQ_READDIR 1582 aio_readdir = EIO_READDIR
1098 PPCODE: 1583 PPCODE:
1099{ 1584{
1100 dREQ; 1585 dREQ;
1101 1586
1102 req->type = ix; 1587 req->type = ix;
1103 req->data = newSVsv (pathname); 1588 req_set_path1 (req, pathname);
1104 req->dataptr = SvPVbyte_nolen (req->data); 1589
1105
1106 REQ_SEND; 1590 REQ_SEND;
1107} 1591}
1108 1592
1109void 1593void
1110aio_link (oldpath,newpath,callback=&PL_sv_undef) 1594aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1111 SV * oldpath
1112 SV * newpath
1113 SV * callback
1114 ALIAS: 1595 ALIAS:
1115 aio_link = REQ_LINK 1596 aio_link = EIO_LINK
1116 aio_symlink = REQ_SYMLINK 1597 aio_symlink = EIO_SYMLINK
1117 aio_rename = REQ_RENAME 1598 aio_rename = EIO_RENAME
1118 PPCODE: 1599 PPCODE:
1119{ 1600{
1601 eio_wd wd2 = 0;
1120 dREQ; 1602 dREQ;
1121 1603
1122 req->type = ix; 1604 req->type = ix;
1123 req->fh = newSVsv (oldpath); 1605 req_set_path1 (req, oldpath);
1124 req->data2ptr = SvPVbyte_nolen (req->fh); 1606 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1125 req->data = newSVsv (newpath); 1607 req->int3 = (long)wd2;
1126 req->dataptr = SvPVbyte_nolen (req->data);
1127 1608
1128 REQ_SEND; 1609 REQ_SEND;
1129} 1610}
1130 1611
1131void 1612void
1132aio_sleep (delay,callback=&PL_sv_undef) 1613aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1133 double delay
1134 SV * callback
1135 PPCODE: 1614 PPCODE:
1136{ 1615{
1616 eio_wd wd2 = 0;
1137 dREQ; 1617 dREQ;
1138 1618
1139 req->type = REQ_SLEEP; 1619 req->type = EIO_RENAME;
1140 req->fd = delay < 0. ? 0 : delay; 1620 req_set_path1 (req, oldpath);
1141 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1621 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1142 1622 req->int2 = flags;
1623 req->int3 = (long)wd2;
1624
1143 REQ_SEND; 1625 REQ_SEND;
1144} 1626}
1145 1627
1146void 1628void
1147aio_group (callback=&PL_sv_undef) 1629aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1148 SV * callback 1630 PPCODE:
1149 PROTOTYPE: ;$ 1631{
1632 dREQ;
1633
1634 req->type = EIO_MKNOD;
1635 req->int2 = (mode_t)mode;
1636 req->offs = dev;
1637 req_set_path1 (req, pathname);
1638
1639 REQ_SEND;
1640}
1641
1642void
1643aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1644 ALIAS:
1645 aio_mtouch = EIO_MTOUCH
1646 aio_msync = EIO_MSYNC
1150 PPCODE: 1647 PPCODE:
1151{ 1648{
1649 STRLEN svlen;
1650 char *svptr = SvPVbyte (data, svlen);
1651 UV len = SvUV (length);
1652
1653 if (flags < 0)
1654 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1655
1656 if (offset < 0)
1657 offset += svlen;
1658
1659 if (offset < 0 || offset > svlen)
1660 croak ("offset outside of scalar");
1661
1662 if (!SvOK (length) || len + offset > svlen)
1663 len = svlen - offset;
1664
1665 {
1666 dREQ;
1667
1668 req->type = ix;
1669 req->sv2 = SvREFCNT_inc (data);
1670 req->ptr2 = (char *)svptr + offset;
1671 req->size = len;
1672 req->int1 = flags;
1673
1674 REQ_SEND;
1675 }
1676}
1677
1678void
1679aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1680 PPCODE:
1681{
1682 STRLEN svlen;
1683 char *svptr = SvPVbyte (data, svlen);
1684 UV len = SvUV (length);
1685
1686 if (offset < 0)
1687 offset += svlen;
1688
1689 if (offset < 0 || offset > svlen)
1690 croak ("offset outside of scalar");
1691
1692 if (!SvOK (length) || len + offset > svlen)
1693 len = svlen - offset;
1694
1695 {
1696 dREQ;
1697
1698 req->type = EIO_MLOCK;
1699 req->sv2 = SvREFCNT_inc (data);
1700 req->ptr2 = (char *)svptr + offset;
1701 req->size = len;
1702
1703 REQ_SEND;
1704 }
1705}
1706
1707void
1708aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1709 PPCODE:
1710{
1711 dREQ;
1712
1713 req->type = EIO_MLOCKALL;
1714 req->int1 = flags;
1715
1716 REQ_SEND;
1717}
1718
1719void
1720aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1721 PPCODE:
1722{
1723 int fd = s_fileno_croak (fh, 0);
1152 dREQ; 1724 dREQ;
1725
1726 req->type = EIO_CUSTOM;
1727 req->sv1 = newSVsv (fh);
1728 req->int1 = fd;
1729
1730 req->feed = fiemap;
1731#if HAVE_FIEMAP
1732 /* keep our fingers crossed that the next two types are 64 bit */
1733 req->offs = start;
1734 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1735 req->int2 = flags;
1736 req->int3 = SvOK (count) ? SvIV (count) : -1;
1737#endif
1738
1739 REQ_SEND;
1740}
1741
1742void
1743aio_busy (double delay, SV *callback = &PL_sv_undef)
1744 PPCODE:
1745{
1746 dREQ;
1747
1748 req->type = EIO_BUSY;
1749 req->nv1 = delay < 0. ? 0. : delay;
1750
1751 REQ_SEND;
1752}
1753
1754void
1755aio_group (SV *callback = &PL_sv_undef)
1756 PPCODE:
1757{
1758 dREQ;
1759
1153 req->type = REQ_GROUP; 1760 req->type = EIO_GROUP;
1154 req->grp_next = req;
1155 req->grp_prev = req;
1156 1761
1762 PUTBACK;
1157 req_send (req); 1763 req_submit (req);
1764 SPAGAIN;
1765
1158 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1766 XPUSHs (req_sv (req, aio_grp_stash));
1159} 1767}
1768
1769void
1770aio_nop (SV *callback = &PL_sv_undef)
1771 ALIAS:
1772 aio_nop = EIO_NOP
1773 aio_sync = EIO_SYNC
1774 PPCODE:
1775{
1776 dREQ;
1777
1778 req->type = ix;
1779
1780 REQ_SEND;
1781}
1782
1783int
1784aioreq_pri (int pri = NO_INIT)
1785 CODE:
1786 RETVAL = next_pri;
1787 if (items > 0)
1788 {
1789 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1790 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1791 next_pri = pri;
1792 }
1793 OUTPUT:
1794 RETVAL
1795
1796void
1797aioreq_nice (int nice = 0)
1798 CODE:
1799 nice = next_pri - nice;
1800 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1801 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1802 next_pri = nice;
1160 1803
1161void 1804void
1162flush () 1805flush ()
1163 PROTOTYPE:
1164 CODE: 1806 CODE:
1165 while (nreqs) 1807 while (eio_nreqs ())
1166 { 1808 {
1167 poll_wait (); 1809 poll_wait ();
1168 poll_cb (); 1810 poll_cb ();
1169 } 1811 }
1170 1812
1171void 1813int
1172poll() 1814poll ()
1173 PROTOTYPE:
1174 CODE: 1815 CODE:
1175 if (nreqs)
1176 {
1177 poll_wait (); 1816 poll_wait ();
1178 poll_cb (); 1817 RETVAL = poll_cb ();
1179 }
1180
1181int
1182poll_fileno()
1183 PROTOTYPE:
1184 CODE:
1185 RETVAL = respipe [0];
1186 OUTPUT: 1818 OUTPUT:
1187 RETVAL 1819 RETVAL
1188 1820
1189int 1821int
1822poll_fileno ()
1823 CODE:
1824 RETVAL = s_epipe_fd (&respipe);
1825 OUTPUT:
1826 RETVAL
1827
1828int
1190poll_cb(...) 1829poll_cb (...)
1191 PROTOTYPE: 1830 PROTOTYPE:
1192 CODE: 1831 CODE:
1193 RETVAL = poll_cb (); 1832 RETVAL = poll_cb ();
1194 OUTPUT: 1833 OUTPUT:
1195 RETVAL 1834 RETVAL
1196 1835
1197void 1836void
1198poll_wait() 1837poll_wait ()
1199 PROTOTYPE:
1200 CODE: 1838 CODE:
1201 if (nreqs)
1202 poll_wait (); 1839 poll_wait ();
1203 1840
1204int 1841int
1205nreqs() 1842nreqs ()
1206 PROTOTYPE:
1207 CODE: 1843 CODE:
1208 RETVAL = nreqs; 1844 RETVAL = eio_nreqs ();
1209 OUTPUT: 1845 OUTPUT:
1210 RETVAL 1846 RETVAL
1211 1847
1848int
1849nready ()
1850 CODE:
1851 RETVAL = eio_nready ();
1852 OUTPUT:
1853 RETVAL
1854
1855int
1856npending ()
1857 CODE:
1858 RETVAL = eio_npending ();
1859 OUTPUT:
1860 RETVAL
1861
1862int
1863nthreads ()
1864 CODE:
1865 RETVAL = eio_nthreads ();
1866 OUTPUT:
1867 RETVAL
1868
1869int
1870fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1871 CODE:
1872 RETVAL = posix_fadvise (fh, offset, length, advice);
1873 OUTPUT:
1874 RETVAL
1875
1876IV
1877sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1878 CODE:
1879 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1880 OUTPUT:
1881 RETVAL
1882
1883void
1884mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1885 PPCODE:
1886 sv_unmagic (scalar, MMAP_MAGIC);
1887{
1888 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1889 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1890 if (addr == (void *)-1)
1891 XSRETURN_NO;
1892
1893 sv_force_normal (scalar);
1894
1895 /* we store the length in mg_obj, as namlen is I32 :/ */
1896 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1897 ->mg_obj = (SV *)length;
1898
1899 SvUPGRADE (scalar, SVt_PV); /* nop... */
1900
1901 if (!(prot & PROT_WRITE))
1902 SvREADONLY_on (scalar);
1903
1904 if (SvLEN (scalar))
1905 Safefree (SvPVX (scalar));
1906
1907 SvPVX (scalar) = (char *)addr;
1908 SvCUR_set (scalar, length);
1909 SvLEN_set (scalar, 0);
1910 SvPOK_only (scalar);
1911
1912 XSRETURN_YES;
1913}
1914
1915void
1916munmap (SV *scalar)
1917 CODE:
1918 sv_unmagic (scalar, MMAP_MAGIC);
1919
1920int
1921madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1922 ALIAS:
1923 mprotect = 1
1924 CODE:
1925{
1926 STRLEN svlen;
1927 void *addr = SvPVbyte (scalar, svlen);
1928 STRLEN len = SvUV (length);
1929
1930 if (offset < 0)
1931 offset += svlen;
1932
1933 if (offset < 0 || offset > svlen)
1934 croak ("offset outside of scalar");
1935
1936 if (!SvOK (length) || len + offset > svlen)
1937 len = svlen - offset;
1938
1939 addr = (void *)(((intptr_t)addr) + offset);
1940 eio_page_align (&addr, &len);
1941
1942 switch (ix)
1943 {
1944 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1945 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1946 }
1947}
1948 OUTPUT:
1949 RETVAL
1950
1951int
1952munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1953 CODE:
1954{
1955 STRLEN svlen;
1956 void *addr = SvPVbyte (scalar, svlen);
1957 size_t len = SvUV (length);
1958
1959 if (offset < 0)
1960 offset += svlen;
1961
1962 if (offset < 0 || offset > svlen)
1963 croak ("offset outside of scalar");
1964
1965 if (!SvOK (length) || len + offset > svlen)
1966 len = svlen - offset;
1967
1968 addr = (void *)(((intptr_t)addr) + offset);
1969 eio_page_align (&addr, &len);
1970#if _POSIX_MEMLOCK_RANGE
1971 RETVAL = munlock (addr, len);
1972#else
1973 RETVAL = EIO_ENOSYS ();
1974#endif
1975}
1976 OUTPUT:
1977 RETVAL
1978
1979int
1980munlockall ()
1981 CODE:
1982#if _POSIX_MEMLOCK
1983 munlockall ();
1984#else
1985 RETVAL = EIO_ENOSYS ();
1986#endif
1987 OUTPUT:
1988 RETVAL
1989
1990int
1991splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1992 CODE:
1993{
1994#if HAVE_LINUX_SPLICE
1995 loff_t off_in_, off_out_;
1996 RETVAL = splice (
1997 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1998 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1999 length, flags
2000 );
2001#else
2002 RETVAL = EIO_ENOSYS ();
2003#endif
2004}
2005 OUTPUT:
2006 RETVAL
2007
2008int
2009tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2010 CODE:
2011#if HAVE_LINUX_SPLICE
2012 RETVAL = tee (rfh, wfh, length, flags);
2013#else
2014 RETVAL = EIO_ENOSYS ();
2015#endif
2016 OUTPUT:
2017 RETVAL
2018
2019int
2020pipesize (aio_rfd rfh, int new_size = -1)
2021 PROTOTYPE: $;$
2022 CODE:
2023#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2024 if (new_size >= 0)
2025 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2026 else
2027 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2028#else
2029 errno = ENOSYS;
2030 RETVAL = -1;
2031#endif
2032 OUTPUT:
2033 RETVAL
2034
2035void
2036pipe2 (int flags = 0)
2037 PROTOTYPE: ;$
2038 PPCODE:
2039{
2040 int fd[2];
2041 int res;
2042
2043 if (flags)
2044#if HAVE_PIPE2
2045 res = pipe2 (fd, flags);
2046#else
2047 res = (errno = ENOSYS, -1);
2048#endif
2049 else
2050 res = pipe (fd);
2051
2052 if (!res)
2053 {
2054 EXTEND (SP, 2);
2055 PUSHs (newmortalFH (fd[0], O_RDONLY));
2056 PUSHs (newmortalFH (fd[1], O_WRONLY));
2057 }
2058}
2059
2060UV
2061get_fdlimit ()
2062 CODE:
2063#if HAVE_RLIMITS
2064 struct rlimit rl;
2065 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2066 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2067#endif
2068 XSRETURN_UNDEF;
2069 OUTPUT:
2070 RETVAL
2071
2072void
2073min_fdlimit (UV limit = 0x7fffffffU)
2074 CODE:
2075{
2076#if HAVE_RLIMITS
2077 struct rlimit rl;
2078 rlim_t orig_rlim_max;
2079 UV bit;
2080
2081 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2082 goto fail;
2083
2084 if (rl.rlim_cur == RLIM_INFINITY)
2085 XSRETURN_YES;
2086
2087 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2088
2089 if (rl.rlim_cur < limit)
2090 {
2091 rl.rlim_cur = limit;
2092
2093 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2094 rl.rlim_max = rl.rlim_cur;
2095 }
2096
2097 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2098 XSRETURN_YES;
2099
2100 if (errno == EPERM)
2101 {
2102 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2103 /* our limit overflows a system-wide limit */
2104 /* try an adaptive algorithm, but do not lower the hardlimit */
2105 rl.rlim_max = 0;
2106 for (bit = 0x40000000U; bit; bit >>= 1)
2107 {
2108 rl.rlim_max |= bit;
2109 rl.rlim_cur = rl.rlim_max;
2110
2111 /* nevr decrease the hard limit */
2112 if (rl.rlim_max < orig_rlim_max)
2113 break;
2114
2115 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2116 rl.rlim_max &= ~bit; /* too high, remove bit again */
2117 }
2118
2119 /* now, raise the soft limit to the max permitted */
2120 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2121 {
2122 rl.rlim_cur = rl.rlim_max;
2123 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2124 errno = EPERM;
2125 }
2126 }
2127#endif
2128 fail:
2129 XSRETURN_UNDEF;
2130}
2131
2132void _on_next_submit (SV *cb)
2133 CODE:
2134 SvREFCNT_dec (on_next_submit);
2135 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2136
2137PROTOTYPES: DISABLE
2138
2139MODULE = IO::AIO PACKAGE = IO::AIO::WD
2140
2141BOOT:
2142{
2143 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2144 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2145}
2146
2147void
2148DESTROY (SV *self)
2149 CODE:
2150{
2151 aio_wd wd = SvAIO_WD (self);
2152#if HAVE_AT
2153 {
2154 SV *callback = &PL_sv_undef;
2155 dREQ; /* clobbers next_pri :/ */
2156 next_pri = req->pri; /* restore next_pri */
2157 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2158 req->type = EIO_WD_CLOSE;
2159 req->wd = wd;
2160 REQ_SEND;
2161 }
2162#else
2163 eio_wd_close_sync (wd);
2164#endif
2165}
2166
1212MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2167MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213 2168
1214void 2169void
1215cancel (aio_req_ornot req) 2170cancel (aio_req_ornot req)
1216 PROTOTYPE:
1217 CODE: 2171 CODE:
1218 req_cancel (req); 2172 eio_cancel (req);
2173
2174void
2175cb (aio_req_ornot req, SV *callback = NO_INIT)
2176 PPCODE:
2177{
2178 if (GIMME_V != G_VOID)
2179 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2180
2181 if (items > 1)
2182 {
2183 SV *cb_cv = get_cb (callback);
2184
2185 SvREFCNT_dec (req->callback);
2186 req->callback = SvREFCNT_inc (cb_cv);
2187 }
2188}
1219 2189
1220MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2190MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221 2191
1222void 2192void
1223add (aio_req grp, ...) 2193add (aio_req grp, ...)
1224 PROTOTYPE: $;@
1225 PPCODE: 2194 PPCODE:
1226{ 2195{
1227 int i; 2196 int i;
2197
2198 if (grp->int1 == 2)
2199 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228 2200
1229 for (i = 1; i < items; ++i ) 2201 for (i = 1; i < items; ++i )
1230 { 2202 {
2203 aio_req req;
2204
1231 if (GIMME_V != G_VOID) 2205 if (GIMME_V != G_VOID)
1232 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2206 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233 2207
1234 aio_req req = SvAIO_REQ (ST (i)); 2208 req = SvAIO_REQ (ST (i));
1235 printf ("req = %p\n", req);//D
1236 2209
1237 if (req) 2210 if (req)
1238 { 2211 eio_grp_add (grp, req);
1239 req->grp_prev = grp;
1240 req->grp_next = grp->grp_next;
1241 grp->grp_next->grp_prev = req;
1242 grp->grp_next = req;
1243
1244 req->grp = grp;
1245 }
1246 } 2212 }
1247} 2213}
1248 2214
2215void
2216cancel_subs (aio_req_ornot req)
2217 CODE:
2218 req_cancel_subs (req);
2219
2220void
2221result (aio_req grp, ...)
2222 CODE:
2223{
2224 int i;
2225 AV *av;
2226
2227 grp->errorno = errno;
2228
2229 av = newAV ();
2230 av_extend (av, items - 1);
2231
2232 for (i = 1; i < items; ++i )
2233 av_push (av, newSVsv (ST (i)));
2234
2235 SvREFCNT_dec (grp->sv1);
2236 grp->sv1 = (SV *)av;
2237}
2238
2239void
2240errno (aio_req grp, int errorno = errno)
2241 CODE:
2242 grp->errorno = errorno;
2243
2244void
2245limit (aio_req grp, int limit)
2246 CODE:
2247 eio_grp_limit (grp, limit);
2248
2249void
2250feed (aio_req grp, SV *callback = &PL_sv_undef)
2251 CODE:
2252{
2253 SvREFCNT_dec (grp->sv2);
2254 grp->sv2 = newSVsv (callback);
2255 grp->feed = aio_grp_feed;
2256
2257 if (grp->int2 <= 0)
2258 grp->int2 = 2;
2259
2260 eio_grp_limit (grp, grp->int2);
2261}
2262

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