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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.261 by root, Tue Jul 24 19:32:20 2018 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#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
9 12
10#include <pthread.h> 13#include <stddef.h>
11 14#include <stdlib.h>
15#include <errno.h>
12#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
13#include <sys/stat.h> 18#include <sys/stat.h>
14
15#include <unistd.h> 19#include <limits.h>
16#include <fcntl.h> 20#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 21#include <sched.h>
19 22
20#if HAVE_SENDFILE 23#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# if __linux
22# include <sys/sendfile.h>
23# elif __freebsd
24# include <sys/socket.h>
25# include <sys/uio.h> 24# include <sys/mman.h>
26# elif __hpux 25#endif
27# include <sys/socket.h> 26
27/* the incompetent fool that created musl keeps __linux__, refuses
28 * to implement any linux standard apis, and also has no way to test
29 * for his broken iplementation. don't complain to me if this fails
30 * for you.
31 */
32#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
33# include <linux/fs.h>
34# ifdef FS_IOC_FIEMAP
35# include <linux/types.h>
36# include <linux/fiemap.h>
37# define HAVE_FIEMAP 1
28# endif 38# endif
29#endif 39#endif
30 40
31#if __ia64 41/* perl namespace pollution */
32# define STACKSIZE 65536 42#undef VERSION
43
44/* perl stupidly overrides readdir and maybe others */
45/* with thread-unsafe versions, imagine that :( */
46#undef readdir
47#undef opendir
48#undef closedir
49
50#ifdef _WIN32
51
52 // perl overrides all those nice libc functions
53
54 #undef malloc
55 #undef free
56 #undef open
57 #undef read
58 #undef write
59 #undef send
60 #undef recv
61 #undef stat
62 #undef lstat
63 #undef fstat
64 #undef truncate
65 #undef ftruncate
66 #undef open
67 #undef link
68 #undef close
69 #undef unlink
70 #undef mkdir
71 #undef rmdir
72 #undef rename
73 #undef lseek
74 #undef opendir
75 #undef readdir
76 #undef closedir
77 #undef chmod
78 #undef fchmod
79 #undef dup
80 #undef dup2
81 #undef abort
82 #undef pipe
83
84 #define EIO_STRUCT_STAT struct _stati64
85 #define EIO_STRUCT_STATI64
86
33#else 87#else
34# define STACKSIZE 4096 88
89 #include <sys/time.h>
90 #include <sys/select.h>
91 #include <unistd.h>
92 #include <utime.h>
93 #include <signal.h>
94
95 #define EIO_STRUCT_STAT Stat_t
96
97#endif
98
99/*****************************************************************************/
100
101#if __GNUC__ >= 3
102# define expect(expr,value) __builtin_expect ((expr),(value))
103#else
104# define expect(expr,value) (expr)
105#endif
106
107#define expect_false(expr) expect ((expr) != 0, 0)
108#define expect_true(expr) expect ((expr) != 0, 1)
109
110/*****************************************************************************/
111
112#include "libeio/config.h"
113
114#include "schmorp.h"
115
116#if HAVE_EVENTFD
117# include <sys/eventfd.h>
118#endif
119
120#if HAVE_TIMERFD
121# include <sys/timerfd.h>
122#endif
123
124#if HAVE_RLIMITS
125 #include <sys/time.h>
126 #include <sys/resource.h>
127#endif
128
129typedef SV SV8; /* byte-sv, used for argument-checking */
130typedef int aio_rfd; /* read file desriptor */
131typedef int aio_wfd; /* write file descriptor */
132
133static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
134
135#define EIO_REQ_MEMBERS \
136 SV *callback; \
137 SV *sv1, *sv2; \
138 SV *sv3, *sv4; \
139 STRLEN stroffset; \
140 SV *self;
141
142#define EIO_NO_WRAPPERS 1
143
144#include "libeio/eio.h"
145
146static int req_invoke (eio_req *req);
147#define EIO_FINISH(req) req_invoke (req)
148static void req_destroy (eio_req *grp);
149#define EIO_DESTROY(req) req_destroy (req)
150
151#include "libeio/eio.c"
152
153#if !HAVE_POSIX_FADVISE
154# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
155#endif
156
157#if !HAVE_POSIX_MADVISE
158# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
159#endif
160
161#ifndef MAP_ANONYMOUS
162# ifdef MAP_ANON
163# define MAP_ANONYMOUS MAP_ANON
164# else
165# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
35#endif 166# endif
167#endif
36 168
37enum { 169#ifndef makedev
38 REQ_QUIT, 170# define makedev(maj,min) (((maj) << 8) | (min))
39 REQ_OPEN, REQ_CLOSE, 171#endif
40 REQ_READ, REQ_WRITE, REQ_READAHEAD, 172#ifndef major
41 REQ_SENDFILE, 173# define major(dev) ((dev) >> 8)
42 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 174#endif
43 REQ_FSYNC, REQ_FDATASYNC, 175#ifndef minor
44 REQ_UNLINK, REQ_RMDIR, 176# define minor(dev) ((dev) & 0xff)
45 REQ_SYMLINK, 177#endif
178
179#if PAGESIZE <= 0
180# define PAGESIZE sysconf (_SC_PAGESIZE)
181#endif
182
183/*****************************************************************************/
184
185#if !_POSIX_MAPPED_FILES
186# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
187# define munmap(addr,length) EIO_ENOSYS ()
188#endif
189
190#if !_POSIX_MEMORY_PROTECTION
191# define mprotect(addr,len,prot) EIO_ENOSYS ()
192#endif
193
194#if !MREMAP_MAYMOVE
195# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
196#endif
197
198#define FOREIGN_MAGIC PERL_MAGIC_ext
199
200static int ecb_cold
201mmap_free (pTHX_ SV *sv, MAGIC *mg)
202{
203 int old_errno = errno;
204 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
205 errno = old_errno;
206
207 mg->mg_obj = 0; /* just in case */
208
209 SvREADONLY_off (sv);
210
211 if (SvPVX (sv) != mg->mg_ptr)
212 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
213
214 SvCUR_set (sv, 0);
215 SvPVX (sv) = 0;
216 SvOK_off (sv);
217
218 return 0;
219}
220
221static MGVTBL mmap_vtbl = {
222 0, 0, 0, 0, mmap_free
46}; 223};
47 224
48typedef struct aio_cb { 225static int ecb_cold
49 struct aio_cb *volatile next; 226sysfree_free (pTHX_ SV *sv, MAGIC *mg)
50
51 int type;
52
53 int fd, fd2;
54 off_t offset;
55 size_t length;
56 ssize_t result;
57 mode_t mode; /* open */
58 int errorno;
59 SV *data, *callback;
60 SV *fh, *fh2;
61 void *dataptr, *data2ptr;
62 STRLEN dataoffset;
63
64 Stat_t *statdata;
65} aio_cb;
66
67typedef aio_cb *aio_req;
68
69static int started, wanted;
70static volatile int nreqs;
71static int max_outstanding = 1<<30;
72static int respipe [2];
73
74static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
75static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
76static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77
78static volatile aio_req reqs, reqe; /* queue start, queue end */
79static volatile aio_req ress, rese; /* queue start, queue end */
80
81static void free_req (aio_req req)
82{ 227{
83 if (req->data) 228 free (mg->mg_ptr);
84 SvREFCNT_dec (req->data); 229 mg->mg_obj = 0; /* just in case */
85 230
86 if (req->fh) 231 SvREADONLY_off (sv);
87 SvREFCNT_dec (req->fh);
88 232
89 if (req->fh2) 233 if (SvPVX (sv) != mg->mg_ptr)
90 SvREFCNT_dec (req->fh2); 234 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
91 235
92 if (req->statdata) 236 SvCUR_set (sv, 0);
93 Safefree (req->statdata); 237 SvPVX (sv) = 0;
238 SvOK_off (sv);
94 239
95 if (req->callback) 240 return 0;
96 SvREFCNT_dec (req->callback);
97
98 Safefree (req);
99} 241}
100 242
243static MGVTBL sysfree_vtbl = {
244 0, 0, 0, 0, sysfree_free
245};
246
247/*****************************************************************************/
248
249/* helper: set scalar to foreign ptr with custom free */
101static void 250static void
102poll_wait () 251sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
103{ 252{
104 if (nreqs && !ress) 253 sv_force_normal (sv);
105 {
106 fd_set rfd;
107 FD_ZERO(&rfd);
108 FD_SET(respipe [0], &rfd);
109 254
110 select (respipe [0] + 1, &rfd, 0, 0, 0); 255 /* we store the length in mg_obj, as namlen is I32 :/ */
111 } 256 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
112} 257 ->mg_obj = (SV *)length;
113 258
259 SvUPGRADE (sv, SVt_PV); /* nop... */
260
261 if (SvLEN (sv))
262 Safefree (SvPVX (sv));
263
264 SvPVX (sv) = (char *)addr;
265 SvCUR_set (sv, length);
266 SvLEN_set (sv, 0);
267 SvPOK_only (sv);
268}
269
114static int 270static void
115poll_cb () 271sv_clear_foreign (SV *sv)
116{ 272{
117 dSP; 273 /* todo: iterate over magic and only free ours, but of course */
274 /* the perl5porters will call that (correct) behaviour buggy */
275 sv_unmagic (sv, FOREIGN_MAGIC);
276}
277
278/*****************************************************************************/
279
280/* defines all sorts of constants to 0 unless they are already defined */
281/* also provides const_iv_ and const_niv_ macros for them */
282#include "def0.h"
283
284/*****************************************************************************/
285
286static void
287fiemap (eio_req *req)
288{
289 req->result = -1;
290
291#if HAVE_FIEMAP
292 /* assume some c99 */
293 struct fiemap *fiemap = 0;
294 size_t end_offset;
295 int count = req->int3;
296
297 req->flags |= EIO_FLAG_PTR1_FREE;
298
299 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
300 /* increase in 3.5kb steps */
301 if (count < 0)
118 int count = 0; 302 count = 8;
119 int do_croak = 0; 303
120 aio_req req; 304 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
305 errno = ENOMEM;
306 if (!fiemap)
307 return;
308
309 req->ptr1 = fiemap;
310
311 fiemap->fm_start = req->offs;
312 fiemap->fm_length = req->size;
313 fiemap->fm_flags = req->int2;
314 fiemap->fm_extent_count = count;
315
316 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
317 return;
318
319 if (req->int3 >= 0 /* not autosizing */
320 || !fiemap->fm_mapped_extents /* no more extents */
321 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
322 goto done;
323
324 /* else we have to loop -
325 * it would be tempting (actually I tried that first) to just query the
326 * number of extents needed, but linux often feels like not returning all
327 * extents, without telling us it left any out. this complicates
328 * this quite a bit.
329 */
330
331 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
121 332
122 for (;;) 333 for (;;)
123 { 334 {
124 pthread_mutex_lock (&reslock); 335 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
125 req = ress; 336 char scratch[3072];
337 struct fiemap *incmap = (struct fiemap *)scratch;
126 338
339 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
340 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
341 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
342 incmap->fm_flags = fiemap->fm_flags;
343 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
344
345 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
346 return;
347
348 if (!incmap->fm_mapped_extents)
349 goto done;
350
351 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
352 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
353 errno = ENOMEM;
127 if (req) 354 if (!fiemap)
355 return;
356
357 req->ptr1 = fiemap;
358
359 for (count = 0; count < incmap->fm_mapped_extents; ++count)
128 { 360 {
129 ress = req->next; 361 struct fiemap_extent *e = incmap->fm_extents + count;
130 362
131 if (!ress) 363 if (e->fe_logical + e->fe_length >= end_offset)
132 { 364 goto done;
133 /* read any signals sent by the worker threads */
134 char buf [32];
135 while (read (respipe [0], buf, 32) == 32)
136 ;
137 365
138 rese = 0; 366 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
139 } 367
368 if (e->fe_flags & FIEMAP_EXTENT_LAST)
369 goto done;
370
140 } 371 }
372 }
141 373
142 pthread_mutex_unlock (&reslock); 374done:
375 req->result = 0;
143 376
144 if (!req) 377#else
145 break; 378 errno = ENOSYS;
379#endif
380}
146 381
147 nreqs--; 382/*****************************************************************************/
148 383
149 if (req->type == REQ_QUIT) 384enum {
150 started--; 385 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
151 else 386};
387
388typedef eio_req *aio_req;
389typedef eio_req *aio_req_ornot;
390typedef eio_wd aio_wd;
391
392static SV *on_next_submit;
393static int next_pri = EIO_PRI_DEFAULT;
394static int max_outstanding;
395
396static s_epipe respipe;
397
398static void req_destroy (aio_req req);
399static void req_cancel (aio_req req);
400
401static void
402want_poll (void)
403{
404 /* write a dummy byte to the pipe so fh becomes ready */
405 s_epipe_signal (&respipe);
406}
407
408static void
409done_poll (void)
410{
411 /* read any signals sent by the worker threads */
412 s_epipe_drain (&respipe);
413}
414
415/* must be called at most once */
416static SV *
417req_sv (aio_req req, HV *stash)
418{
419 if (!req->self)
420 {
421 req->self = (SV *)newHV ();
422 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
423 }
424
425 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
426}
427
428static SV *
429newSVaio_wd (aio_wd wd)
430{
431 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
432}
433
434static aio_req
435SvAIO_REQ (SV *sv)
436{
437 MAGIC *mg;
438
439 if (!SvROK (sv)
440 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
441 || (SvSTASH (SvRV (sv)) != aio_grp_stash
442 && SvSTASH (SvRV (sv)) != aio_req_stash
443 && !sv_derived_from (sv, "IO::AIO::REQ")))
444 croak ("object of class IO::AIO::REQ expected");
445
446 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
447
448 return mg ? (aio_req)mg->mg_ptr : 0;
449}
450
451static aio_wd
452SvAIO_WD (SV *sv)
453{
454 if (!SvROK (sv)
455 || SvTYPE (SvRV (sv)) != SVt_PVMG
456 || SvSTASH (SvRV (sv)) != aio_wd_stash)
457 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
458
459 return (aio_wd)(long)SvIVX (SvRV (sv));
460}
461
462static SV *
463newmortalFH (int fd, int flags)
464{
465 if (fd < 0)
466 return &PL_sv_undef;
467
468 GV *gv = (GV *)sv_newmortal ();
469 char sym[64];
470 int symlen;
471
472 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
473 gv_init (gv, aio_stash, sym, symlen, 0);
474
475 symlen = snprintf (
476 sym,
477 sizeof (sym),
478 "%s&=%d",
479 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
480 fd
481 );
482
483 return do_open (gv, sym, symlen, 0, 0, 0, 0)
484 ? (SV *)gv : &PL_sv_undef;
485}
486
487static void
488aio_grp_feed (aio_req grp)
489{
490 if (grp->sv2 && SvOK (grp->sv2))
491 {
492 dSP;
493
494 ENTER;
495 SAVETMPS;
496 PUSHMARK (SP);
497 XPUSHs (req_sv (grp, aio_grp_stash));
498 PUTBACK;
499 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
500 SPAGAIN;
501 FREETMPS;
502 LEAVE;
503 }
504}
505
506static void
507req_submit (eio_req *req)
508{
509 eio_submit (req);
510
511 if (expect_false (on_next_submit))
512 {
513 dSP;
514 SV *cb = sv_2mortal (on_next_submit);
515
516 on_next_submit = 0;
517
518 PUSHMARK (SP);
519 PUTBACK;
520 call_sv (cb, G_DISCARD | G_EVAL);
521 }
522}
523
524static int
525req_invoke (eio_req *req)
526{
527 if (req->flags & FLAG_SV2_RO_OFF)
528 SvREADONLY_off (req->sv2);
529
530 if (!EIO_CANCELLED (req) && req->callback)
531 {
532 dSP;
533 static SV *sv_result_cache; /* caches the result integer SV */
534 SV *sv_result;
535
536 ENTER;
537 SAVETMPS;
538 PUSHMARK (SP);
539 EXTEND (SP, 1);
540
541 /* do not recreate the result IV from scratch each time */
542 if (expect_true (sv_result_cache))
152 { 543 {
153 int errorno = errno; 544 sv_result = sv_result_cache; sv_result_cache = 0;
154 errno = req->errorno; 545 SvIV_set (sv_result, req->result);
155 546 SvIOK_only (sv_result);
156 if (req->type == REQ_READ)
157 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158
159 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
160 SvREADONLY_off (req->data);
161
162 if (req->statdata)
163 {
164 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165 PL_laststatval = req->result;
166 PL_statcache = *(req->statdata);
167 }
168
169 ENTER;
170 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172
173 if (req->type == REQ_OPEN)
174 {
175 /* convert fd to fh */
176 SV *fh;
177
178 PUTBACK;
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180 SPAGAIN;
181
182 fh = SvREFCNT_inc (POPs);
183
184 PUSHMARK (SP);
185 XPUSHs (sv_2mortal (fh));
186 }
187
188 if (SvOK (req->callback))
189 {
190 PUTBACK;
191 call_sv (req->callback, G_VOID | G_EVAL);
192 SPAGAIN;
193
194 if (SvTRUE (ERRSV))
195 {
196 free_req (req);
197 croak (0);
198 }
199 }
200
201 LEAVE;
202
203 errno = errorno;
204 count++;
205 }
206
207 free_req (req);
208 }
209
210 return count;
211}
212
213static void *aio_proc(void *arg);
214
215static void
216start_thread (void)
217{
218 sigset_t fullsigset, oldsigset;
219 pthread_t tid;
220 pthread_attr_t attr;
221
222 pthread_attr_init (&attr);
223 pthread_attr_setstacksize (&attr, STACKSIZE);
224 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
225
226 sigfillset (&fullsigset);
227 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
228
229 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
230 started++;
231
232 sigprocmask (SIG_SETMASK, &oldsigset, 0);
233}
234
235static void
236send_req (aio_req req)
237{
238 while (started < wanted && nreqs >= started)
239 start_thread ();
240
241 nreqs++;
242
243 pthread_mutex_lock (&reqlock);
244
245 req->next = 0;
246
247 if (reqe)
248 {
249 reqe->next = req;
250 reqe = req;
251 }
252 else
253 reqe = reqs = req;
254
255 pthread_cond_signal (&reqwait);
256 pthread_mutex_unlock (&reqlock);
257
258 if (nreqs > max_outstanding)
259 for (;;)
260 {
261 poll_cb ();
262
263 if (nreqs <= max_outstanding)
264 break;
265
266 poll_wait ();
267 }
268}
269
270static void
271end_thread (void)
272{
273 aio_req req;
274 Newz (0, req, 1, aio_cb);
275 req->type = REQ_QUIT;
276
277 send_req (req);
278}
279
280static void min_parallel (int nthreads)
281{
282 if (wanted < nthreads)
283 wanted = nthreads;
284}
285
286static void max_parallel (int nthreads)
287{
288 int cur = started;
289
290 if (wanted > nthreads)
291 wanted = nthreads;
292
293 while (cur > wanted)
294 {
295 end_thread ();
296 cur--;
297 }
298
299 while (started > wanted)
300 {
301 poll_wait ();
302 poll_cb ();
303 }
304}
305
306static void create_pipe ()
307{
308 if (pipe (respipe))
309 croak ("unable to initialize result pipe");
310
311 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312 croak ("cannot set result pipe to nonblocking mode");
313
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode");
316}
317
318static void atfork_prepare (void)
319{
320 pthread_mutex_lock (&reqlock);
321 pthread_mutex_lock (&reslock);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 aio_req prv;
333
334 started = 0;
335
336 while (reqs)
337 {
338 prv = reqs;
339 reqs = prv->next;
340 free_req (prv);
341 }
342
343 reqs = reqe = 0;
344
345 while (ress)
346 {
347 prv = ress;
348 ress = prv->next;
349 free_req (prv);
350 }
351
352 ress = rese = 0;
353
354 close (respipe [0]);
355 close (respipe [1]);
356 create_pipe ();
357
358 atfork_parent ();
359}
360
361/*****************************************************************************/
362/* work around various missing functions */
363
364#if !HAVE_PREADWRITE
365# define pread aio_pread
366# define pwrite aio_pwrite
367
368/*
369 * make our pread/pwrite safe against themselves, but not against
370 * normal read/write by using a mutex. slows down execution a lot,
371 * but that's your problem, not mine.
372 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
374
375static ssize_t
376pread (int fd, void *buf, size_t count, off_t offset)
377{
378 ssize_t res;
379 off_t ooffset;
380
381 pthread_mutex_lock (&iolock);
382 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock);
387
388 return res;
389}
390
391static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset)
393{
394 ssize_t res;
395 off_t ooffset;
396
397 pthread_mutex_lock (&iolock);
398 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock);
403
404 return res;
405}
406#endif
407
408#if !HAVE_FDATASYNC
409# define fdatasync fsync
410#endif
411
412#if !HAVE_READAHEAD
413# define readahead aio_readahead
414
415static char readahead_buf[4096];
416
417static ssize_t
418readahead (int fd, off_t offset, size_t count)
419{
420 while (count > 0)
421 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423
424 pread (fd, readahead_buf, len, offset);
425 offset += len;
426 count -= len;
427 }
428
429 errno = 0;
430}
431#endif
432
433/* sendfile always needs emulation */
434static ssize_t
435sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436{
437 ssize_t res;
438
439 if (!count)
440 return 0;
441
442#if __linux
443 res = sendfile (ofd, ifd, &offset, count);
444
445#elif __freebsd
446 /*
447 * Of course, the freebsd sendfile is a dire hack with no thoughts
448 * wasted on making it similar to other i/o functions.
449 */
450 {
451 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453
454 if (!res && errno == EAGAIN)
455 /* maybe on others, too, as usual, the manpage leaves you guessing */
456 res = sbytes;
457 }
458
459#elif __hpux
460 res = sendfile (ofd, ifd, offset, count, 0, 0);
461
462#else
463 res = -1;
464 errno = ENOSYS;
465#endif
466
467 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))
468 {
469 /* emulate sendfile. this is a major pain in the ass */
470 char *buf = malloc (4096);
471 res = 0;
472
473 for (;;)
474 {
475 ssize_t cnt;
476
477 cnt = pread (ifd, buf, 4096, offset);
478
479 if (cnt <= 0)
480 {
481 if (cnt && !res) res = -1;
482 break;
483 }
484
485 cnt = write (ofd, buf, cnt);
486
487 if (cnt <= 0)
488 {
489 if (cnt && !res) res = -1;
490 break;
491 }
492
493 offset += cnt;
494 res += cnt;
495 }
496
497 {
498 int errorno = errno;
499 free (buf);
500 errno = errorno;
501 }
502 }
503
504 return res;
505}
506
507/*****************************************************************************/
508
509static void *
510aio_proc (void *thr_arg)
511{
512 aio_req req;
513 int type;
514
515 do
516 {
517 pthread_mutex_lock (&reqlock);
518
519 for (;;)
520 {
521 req = reqs;
522
523 if (reqs)
524 {
525 reqs = reqs->next;
526 if (!reqs) reqe = 0;
527 }
528
529 if (req)
530 break;
531
532 pthread_cond_wait (&reqwait, &reqlock);
533 }
534
535 pthread_mutex_unlock (&reqlock);
536
537 errno = 0; /* strictly unnecessary */
538
539 type = req->type;
540
541 switch (type)
542 {
543 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
544 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
545
546 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
547 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
548
549 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552
553 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
554 case REQ_CLOSE: req->result = close (req->fd); break;
555 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
557 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558
559 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560 case REQ_FSYNC: req->result = fsync (req->fd); break;
561
562 case REQ_QUIT:
563 break;
564
565 default:
566 req->result = ENOSYS;
567 break;
568 }
569
570 req->errorno = errno;
571
572 pthread_mutex_lock (&reslock);
573
574 req->next = 0;
575
576 if (rese)
577 {
578 rese->next = req;
579 rese = req;
580 } 547 }
581 else 548 else
582 { 549 {
583 rese = ress = req; 550 sv_result = newSViv (req->result);
584 551 SvREADONLY_on (sv_result);
585 /* write a dummy byte to the pipe so fh becomes ready */
586 write (respipe [1], &respipe, 1);
587 } 552 }
588 553
589 pthread_mutex_unlock (&reslock); 554 switch (req->type)
555 {
556 case EIO_WD_OPEN:
557 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
558 break;
559
560 case EIO_READDIR:
561 {
562 SV *rv = &PL_sv_undef;
563
564 if (req->result >= 0)
565 {
566 int i;
567 char *names = (char *)req->ptr2;
568 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
569 AV *av = newAV ();
570
571 av_extend (av, req->result - 1);
572
573 for (i = 0; i < req->result; ++i)
574 {
575 if (req->int1 & EIO_READDIR_DENTS)
576 {
577 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
578
579 if (req->int1 & EIO_READDIR_CUSTOM2)
580 {
581 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
582 AV *avent = newAV ();
583
584 av_extend (avent, 2);
585
586 if (!sv_type [ent->type])
587 {
588 sv_type [ent->type] = newSViv (ent->type);
589 SvREADONLY_on (sv_type [ent->type]);
590 }
591
592 av_store (avent, 0, namesv);
593 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
594 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
595
596 av_store (av, i, newRV_noinc ((SV *)avent));
597 }
598 else
599 av_store (av, i, namesv);
600
601 ++ent;
602 }
603 else
604 {
605 SV *name = newSVpv (names, 0);
606 av_store (av, i, name);
607 names += SvCUR (name) + 1;
608 }
609 }
610
611 rv = sv_2mortal (newRV_noinc ((SV *)av));
612 }
613
614 PUSHs (rv);
615
616 if (req->int1 & EIO_READDIR_CUSTOM1)
617 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
618 }
619 break;
620
621 case EIO_OPEN:
622 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
623 break;
624
625 case EIO_STATVFS:
626 case EIO_FSTATVFS:
627 {
628 SV *rv = &PL_sv_undef;
629
630#ifndef _WIN32
631 if (req->result >= 0)
632 {
633 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
634 HV *hv = newHV ();
635 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
636 * chooses to make it a struct.
637 */
638 unsigned long fsid = 0;
639 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
640
641 rv = sv_2mortal (newRV_noinc ((SV *)hv));
642
643 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
644 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
645 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
646 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
647 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
648 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
649 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
650 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
651 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
652 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
653 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
654 }
655#endif
656
657 PUSHs (rv);
658 }
659
660 break;
661
662 case EIO_GROUP:
663 req->int1 = 2; /* mark group as finished */
664
665 if (req->sv1)
666 {
667 int i;
668 AV *av = (AV *)req->sv1;
669
670 EXTEND (SP, AvFILL (av) + 1);
671 for (i = 0; i <= AvFILL (av); ++i)
672 PUSHs (*av_fetch (av, i, 0));
673 }
674 break;
675
676 case EIO_NOP:
677 case EIO_BUSY:
678 break;
679
680 case EIO_READLINK:
681 case EIO_REALPATH:
682 if (req->result > 0)
683 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
684 break;
685
686 case EIO_STAT:
687 case EIO_LSTAT:
688 case EIO_FSTAT:
689 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
690
691 if (!(PL_laststatval = req->result))
692 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
693 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
694
695 PUSHs (sv_result);
696 break;
697
698 case EIO_SEEK:
699 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
700 break;
701
702 case EIO_READ:
703 {
704 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
705 *SvEND (req->sv2) = 0;
706 SvPOK_only (req->sv2);
707 SvSETMAGIC (req->sv2);
708 PUSHs (sv_result);
709 }
710 break;
711
712 case EIO_SLURP:
713 {
714 if (req->result >= 0)
715 {
716 /* if length was originally not known, we steal the malloc'ed memory */
717 if (req->flags & EIO_FLAG_PTR2_FREE)
718 {
719 req->flags &= ~EIO_FLAG_PTR2_FREE;
720 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
721 }
722 else
723 {
724 SvCUR_set (req->sv2, req->result);
725 *SvEND (req->sv2) = 0;
726 SvPOK_only (req->sv2);
727 }
728
729 SvSETMAGIC (req->sv2);
730 }
731
732 PUSHs (sv_result);
733 }
734 break;
735
736 case EIO_CUSTOM:
737 if (req->feed == fiemap)
738 {
739#if HAVE_FIEMAP
740 if (!req->result)
741 {
742 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
743
744 if (fiemap->fm_extent_count)
745 {
746 AV *av = newAV ();
747 int i;
748
749 while (fiemap->fm_mapped_extents)
750 {
751 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
752 AV *ext_av = newAV ();
753
754 av_store (ext_av, 3, newSVuv (extent->fe_flags));
755 av_store (ext_av, 2, newSVval64 (extent->fe_length));
756 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
757 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
758
759 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
760 }
761
762 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
763 }
764 else
765 {
766 SvIV_set (sv_result, fiemap->fm_mapped_extents);
767 PUSHs (sv_result);
768 }
769 }
770#endif
771 }
772 else
773 PUSHs (sv_result);
774 break;
775
776 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
777 if (req->result > 0)
778 SvIV_set (sv_result, 0);
779 /* FALLTHROUGH */
780
781 default:
782 PUSHs (sv_result);
783 break;
784 }
785
786 errno = req->errorno;
787
788 PUTBACK;
789 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
790 SPAGAIN;
791
792 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
793 SvREFCNT_dec (sv_result);
794 else
795 sv_result_cache = sv_result;
796
797 FREETMPS;
798 LEAVE;
799
800 PUTBACK;
590 } 801 }
591 while (type != REQ_QUIT);
592 802
803 return !!SvTRUE (ERRSV);
804}
805
806static void
807req_destroy (aio_req req)
808{
809 if (req->self)
810 {
811 sv_unmagic (req->self, PERL_MAGIC_ext);
812 SvREFCNT_dec (req->self);
813 }
814
815 SvREFCNT_dec (req->sv1);
816 SvREFCNT_dec (req->sv2);
817 SvREFCNT_dec (req->sv3);
818 SvREFCNT_dec (req->sv4);
819 SvREFCNT_dec (req->callback);
820
821 free (req);
822}
823
824static void
825req_cancel_subs (aio_req grp)
826{
827 if (grp->type != EIO_GROUP)
828 return;
829
830 SvREFCNT_dec (grp->sv2);
831 grp->sv2 = 0;
832
833 eio_grp_cancel (grp);
834}
835
836static void ecb_cold
837create_respipe (void)
838{
839 if (s_epipe_renew (&respipe))
840 croak ("IO::AIO: unable to initialize result pipe");
841}
842
843static void
844poll_wait (void)
845{
846 while (eio_nreqs ())
847 {
848 int size;
849
850 X_LOCK (EIO_POOL->reslock);
851 size = EIO_POOL->res_queue.size;
852 X_UNLOCK (EIO_POOL->reslock);
853
854 if (size)
855 return;
856
857 etp_maybe_start_thread (EIO_POOL);
858
859 s_epipe_wait (&respipe);
860 }
861}
862
863static int
864poll_cb (void)
865{
866 for (;;)
867 {
868 int res = eio_poll ();
869
870 if (res > 0)
871 croak (0);
872
873 if (!max_outstanding || max_outstanding > eio_nreqs ())
874 return res;
875
876 poll_wait ();
877 }
878}
879
880static void ecb_cold
881reinit (void)
882{
883 create_respipe ();
884
885 if (eio_init (want_poll, done_poll) < 0)
886 croak ("IO::AIO: unable to initialise eio library");
887}
888
889/*****************************************************************************/
890
891static SV *
892get_cb (SV *cb_sv)
893{
894 SvGETMAGIC (cb_sv);
895 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
896}
897
898static aio_req ecb_noinline
899dreq (SV *callback)
900{
901 SV *cb_cv;
902 aio_req req;
903 int req_pri = next_pri;
904 next_pri = EIO_PRI_DEFAULT;
905
906 cb_cv = get_cb (callback);
907
908 req = calloc (sizeof (*req), 1);
909 if (!req)
910 croak ("out of memory during eio_req allocation");
911
912 req->callback = SvREFCNT_inc (cb_cv);
913 req->pri = req_pri;
914
593 return 0; 915 return req;
594} 916}
595 917
596#define dREQ \ 918#define dREQ \
597 aio_req req; \ 919 aio_req req = dreq (callback); \
920
921#define REQ_SEND \
922 PUTBACK; \
923 req_submit (req); \
924 SPAGAIN; \
598 \ 925 \
599 if (SvOK (callback) && !SvROK (callback)) \ 926 if (GIMME_V != G_VOID) \
600 croak ("clalback must be undef or of reference type"); \ 927 XPUSHs (req_sv (req, aio_req_stash));
601 \ 928
602 Newz (0, req, 1, aio_cb); \ 929ecb_inline void
603 if (!req) \ 930req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
604 croak ("out of memory during aio_req allocation"); \ 931{
605 \ 932 if (expect_false (SvROK (path)))
606 req->callback = newSVsv (callback); 933 {
607 934 SV *rv = SvRV (path);
935 SV *wdob;
936
937 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
938 {
939 path = AvARRAY (rv)[1];
940 wdob = AvARRAY (rv)[0];
941
942 if (SvOK (wdob))
943 {
944 *wd = SvAIO_WD (wdob);
945 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
946 }
947 else
948 *wd = EIO_INVALID_WD;
949 }
950 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
951 {
952 *wd = (aio_wd)(long)SvIVX (rv);
953 *wdsv = SvREFCNT_inc_NN (rv);
954 *ptr = ".";
955 return; /* path set to "." */
956 }
957 else
958 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
959 }
960
961 *pathsv = newSVsv (path);
962 *ptr = SvPVbyte_nolen (*pathsv);
963}
964
965static void ecb_noinline
966req_set_path1 (aio_req req, SV *path)
967{
968 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
969}
970
971static void ecb_noinline
972req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
973{
974 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
975
976 switch (SvTYPE (rv))
977 {
978 case SVt_PVIO:
979 case SVt_PVLV:
980 case SVt_PVGV:
981 req->type = type_fh;
982 req->sv1 = newSVsv (fh_or_path);
983 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
984 break;
985
986 default:
987 req->type = type_path;
988 req_set_path1 (req, fh_or_path);
989 break;
990 }
991}
992
993/*****************************************************************************/
994
995static void
996ts_set (struct timespec *ts, NV value)
997{
998 ts->tv_sec = value;
999 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
1000}
1001
1002static NV
1003ts_get (const struct timespec *ts)
1004{
1005 return ts->tv_sec + ts->tv_nsec * 1e-9;
1006}
1007
1008/*****************************************************************************/
1009
1010XS(boot_IO__AIO) ecb_cold;
1011
608MODULE = IO::AIO PACKAGE = IO::AIO 1012MODULE = IO::AIO PACKAGE = IO::AIO
609 1013
610PROTOTYPES: ENABLE 1014PROTOTYPES: ENABLE
611 1015
612BOOT: 1016BOOT:
613{ 1017{
614 create_pipe (); 1018 static const struct {
615 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1019 const char *name;
616} 1020 IV iv;
1021 } *civ, const_iv[] = {
1022# define const_niv(name, value) { # name, (IV) value },
1023# define const_iv(name) { # name, (IV) name },
1024# define const_eio(name) { # name, (IV) EIO_ ## name },
617 1025
1026 /* you have to re-run ./gendef0 after adding/removing any constants here */
1027 /* the first block can be undef if missing */
1028 const_iv (ENOSYS)
1029 const_iv (EXDEV)
1030 const_iv (EBADR)
1031
1032 /* for lseek */
1033 const_iv (SEEK_DATA)
1034 const_iv (SEEK_HOLE)
1035
1036 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1037 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1038 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1039 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1040 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1041 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1042
1043 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1044 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1045 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1046 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1047 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1048
1049 /* the second block will be 0 when missing */
1050 const_iv (O_ACCMODE)
1051
1052 const_iv (O_RDONLY)
1053 const_iv (O_WRONLY)
1054 const_iv (O_RDWR)
1055 const_iv (O_CREAT)
1056 const_iv (O_TRUNC)
1057 const_iv (O_EXCL)
1058 const_iv (O_APPEND)
1059
1060 const_iv (O_ASYNC)
1061 const_iv (O_DIRECT)
1062 const_iv (O_NOATIME)
1063
1064 const_iv (O_CLOEXEC)
1065 const_iv (O_NOCTTY)
1066 const_iv (O_NOFOLLOW)
1067 const_iv (O_NONBLOCK)
1068 const_iv (O_EXEC)
1069 const_iv (O_SEARCH)
1070 const_iv (O_DIRECTORY)
1071 const_iv (O_DSYNC)
1072 const_iv (O_RSYNC)
1073 const_iv (O_SYNC)
1074 const_iv (O_PATH)
1075 const_iv (O_TMPFILE)
1076 const_iv (O_TTY_INIT)
1077
1078 const_iv (S_IFIFO)
1079 const_iv (S_IFCHR)
1080 const_iv (S_IFBLK)
1081 const_iv (S_IFLNK)
1082 const_iv (S_IFREG)
1083 const_iv (S_IFDIR)
1084 const_iv (S_IFWHT)
1085 const_iv (S_IFSOCK)
1086 const_iv (S_IFMT)
1087
1088 const_iv (ST_RDONLY)
1089 const_iv (ST_NOSUID)
1090 const_iv (ST_NODEV)
1091 const_iv (ST_NOEXEC)
1092 const_iv (ST_SYNCHRONOUS)
1093 const_iv (ST_MANDLOCK)
1094 const_iv (ST_WRITE)
1095 const_iv (ST_APPEND)
1096 const_iv (ST_IMMUTABLE)
1097 const_iv (ST_NOATIME)
1098 const_iv (ST_NODIRATIME)
1099 const_iv (ST_RELATIME)
1100
1101 const_iv (PROT_NONE)
1102 const_iv (PROT_EXEC)
1103 const_iv (PROT_READ)
1104 const_iv (PROT_WRITE)
1105
1106 const_iv (MAP_PRIVATE)
1107 const_iv (MAP_SHARED)
1108 const_iv (MAP_FIXED)
1109 const_iv (MAP_ANONYMOUS)
1110
1111 /* linuxish */
1112 const_iv (MAP_LOCKED)
1113 const_iv (MAP_NORESERVE)
1114 const_iv (MAP_POPULATE)
1115 const_iv (MAP_NONBLOCK)
1116 const_iv (MAP_GROWSDOWN)
1117 const_iv (MAP_32BIT)
1118 const_iv (MAP_HUGETLB)
1119 const_iv (MAP_STACK)
1120
1121 const_iv (MREMAP_MAYMOVE)
1122 const_iv (MREMAP_FIXED)
1123
1124 const_iv (F_DUPFD_CLOEXEC)
1125
1126 const_iv (MSG_CMSG_CLOEXEC)
1127 const_iv (SOCK_CLOEXEC)
1128
1129 const_iv (F_OFD_GETLK)
1130 const_iv (F_OFD_SETLK)
1131 const_iv (F_OFD_GETLKW)
1132
1133 const_iv (FIFREEZE)
1134 const_iv (FITHAW)
1135 const_iv (FITRIM)
1136 const_iv (FICLONE)
1137 const_iv (FICLONERANGE)
1138 const_iv (FIDEDUPERANGE)
1139
1140 const_iv (FS_IOC_GETFLAGS)
1141 const_iv (FS_IOC_SETFLAGS)
1142 const_iv (FS_IOC_GETVERSION)
1143 const_iv (FS_IOC_SETVERSION)
1144 const_iv (FS_IOC_FIEMAP)
1145 const_iv (FS_IOC_FSGETXATTR)
1146 const_iv (FS_IOC_FSSETXATTR)
1147 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1148 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1149 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1150
1151 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1152
1153 const_iv (FS_SECRM_FL)
1154 const_iv (FS_UNRM_FL)
1155 const_iv (FS_COMPR_FL)
1156 const_iv (FS_SYNC_FL)
1157 const_iv (FS_IMMUTABLE_FL)
1158 const_iv (FS_APPEND_FL)
1159 const_iv (FS_NODUMP_FL)
1160 const_iv (FS_NOATIME_FL)
1161 const_iv (FS_DIRTY_FL)
1162 const_iv (FS_COMPRBLK_FL)
1163 const_iv (FS_NOCOMP_FL)
1164 const_iv (FS_ENCRYPT_FL)
1165 const_iv (FS_BTREE_FL)
1166 const_iv (FS_INDEX_FL)
1167 const_iv (FS_JOURNAL_DATA_FL)
1168 const_iv (FS_NOTAIL_FL)
1169 const_iv (FS_DIRSYNC_FL)
1170 const_iv (FS_TOPDIR_FL)
1171 const_iv (FS_FL_USER_MODIFIABLE)
1172
1173 const_iv (FS_XFLAG_REALTIME)
1174 const_iv (FS_XFLAG_PREALLOC)
1175 const_iv (FS_XFLAG_IMMUTABLE)
1176 const_iv (FS_XFLAG_APPEND)
1177 const_iv (FS_XFLAG_SYNC)
1178 const_iv (FS_XFLAG_NOATIME)
1179 const_iv (FS_XFLAG_NODUMP)
1180 const_iv (FS_XFLAG_RTINHERIT)
1181 const_iv (FS_XFLAG_PROJINHERIT)
1182 const_iv (FS_XFLAG_NOSYMLINKS)
1183 const_iv (FS_XFLAG_EXTSIZE)
1184 const_iv (FS_XFLAG_EXTSZINHERIT)
1185 const_iv (FS_XFLAG_NODEFRAG)
1186 const_iv (FS_XFLAG_FILESTREAM)
1187 const_iv (FS_XFLAG_DAX)
1188 const_iv (FS_XFLAG_HASATTR)
1189
1190 const_iv (FIEMAP_FLAG_SYNC)
1191 const_iv (FIEMAP_FLAG_XATTR)
1192 const_iv (FIEMAP_FLAGS_COMPAT)
1193 const_iv (FIEMAP_EXTENT_LAST)
1194 const_iv (FIEMAP_EXTENT_UNKNOWN)
1195 const_iv (FIEMAP_EXTENT_DELALLOC)
1196 const_iv (FIEMAP_EXTENT_ENCODED)
1197 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1198 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1199 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1200 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1201 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1202 const_iv (FIEMAP_EXTENT_MERGED)
1203 const_iv (FIEMAP_EXTENT_SHARED)
1204
1205 const_iv (SPLICE_F_MOVE)
1206 const_iv (SPLICE_F_NONBLOCK)
1207 const_iv (SPLICE_F_MORE)
1208 const_iv (SPLICE_F_GIFT)
1209
1210 const_iv (EFD_CLOEXEC)
1211 const_iv (EFD_NONBLOCK)
1212 const_iv (EFD_SEMAPHORE)
1213
1214 const_iv (CLOCK_REALTIME)
1215 const_iv (CLOCK_MONOTONIC)
1216 const_iv (CLOCK_BOOTTIME)
1217 const_iv (CLOCK_REALTIME_ALARM)
1218 const_iv (CLOCK_BOOTTIME_ALARM)
1219
1220 const_iv (TFD_NONBLOCK)
1221 const_iv (TFD_CLOEXEC)
1222
1223 const_iv (TFD_TIMER_ABSTIME)
1224 const_iv (TFD_TIMER_CANCEL_ON_SET)
1225
1226 /* these are libeio constants, and are independent of gendef0 */
1227 const_eio (SEEK_SET)
1228 const_eio (SEEK_CUR)
1229 const_eio (SEEK_END)
1230
1231 const_eio (MCL_FUTURE)
1232 const_eio (MCL_CURRENT)
1233
1234 const_eio (MS_ASYNC)
1235 const_eio (MS_INVALIDATE)
1236 const_eio (MS_SYNC)
1237
1238 const_eio (MT_MODIFY)
1239
1240 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1241 const_eio (SYNC_FILE_RANGE_WRITE)
1242 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1243
1244 const_eio (FALLOC_FL_KEEP_SIZE)
1245 const_eio (FALLOC_FL_PUNCH_HOLE)
1246 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1247 const_eio (FALLOC_FL_ZERO_RANGE)
1248 const_eio (FALLOC_FL_INSERT_RANGE)
1249 const_eio (FALLOC_FL_UNSHARE_RANGE)
1250
1251 const_eio (RENAME_NOREPLACE)
1252 const_eio (RENAME_EXCHANGE)
1253 const_eio (RENAME_WHITEOUT)
1254
1255 const_eio (READDIR_DENTS)
1256 const_eio (READDIR_DIRS_FIRST)
1257 const_eio (READDIR_STAT_ORDER)
1258 const_eio (READDIR_FOUND_UNKNOWN)
1259
1260 const_eio (DT_UNKNOWN)
1261 const_eio (DT_FIFO)
1262 const_eio (DT_CHR)
1263 const_eio (DT_DIR)
1264 const_eio (DT_BLK)
1265 const_eio (DT_REG)
1266 const_eio (DT_LNK)
1267 const_eio (DT_SOCK)
1268 const_eio (DT_WHT)
1269 };
1270
1271 aio_stash = gv_stashpv ("IO::AIO" , 1);
1272 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1273 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1274 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1275
1276 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1277 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1278
1279 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1280
1281 reinit ();
1282}
1283
618void 1284void
619min_parallel(nthreads) 1285reinit ()
620 int nthreads 1286 PROTOTYPE:
1287
1288void
1289max_poll_reqs (unsigned int nreqs)
621 PROTOTYPE: $ 1290 PROTOTYPE: $
1291 CODE:
1292 eio_set_max_poll_reqs (nreqs);
622 1293
623void 1294void
624max_parallel(nthreads) 1295max_poll_time (double nseconds)
625 int nthreads
626 PROTOTYPE: $ 1296 PROTOTYPE: $
627
628int
629max_outstanding(nreqs)
630 int nreqs
631 PROTOTYPE: $
632 CODE: 1297 CODE:
633 RETVAL = max_outstanding; 1298 eio_set_max_poll_time (nseconds);
1299
1300void
1301min_parallel (unsigned int nthreads)
1302 PROTOTYPE: $
1303 CODE:
1304 eio_set_min_parallel (nthreads);
1305
1306void
1307max_parallel (unsigned int nthreads)
1308 PROTOTYPE: $
1309 CODE:
1310 eio_set_max_parallel (nthreads);
1311
1312void
1313max_idle (unsigned int nthreads)
1314 PROTOTYPE: $
1315 CODE:
1316 eio_set_max_idle (nthreads);
1317
1318void
1319idle_timeout (unsigned int seconds)
1320 PROTOTYPE: $
1321 CODE:
1322 eio_set_idle_timeout (seconds);
1323
1324void
1325max_outstanding (unsigned int maxreqs)
1326 PROTOTYPE: $
1327 CODE:
634 max_outstanding = nreqs; 1328 max_outstanding = maxreqs;
635 1329
636void 1330void
637aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1331aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
638 SV * pathname
639 int flags
640 int mode
641 SV * callback
642 PROTOTYPE: $$$;$
643 CODE: 1332 PPCODE:
644{ 1333{
645 dREQ; 1334 dREQ;
646 1335
1336 req->type = EIO_WD_OPEN;
1337 req_set_path1 (req, pathname);
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1344 PPCODE:
1345{
1346 dREQ;
1347
647 req->type = REQ_OPEN; 1348 req->type = EIO_OPEN;
648 req->data = newSVsv (pathname); 1349 req_set_path1 (req, pathname);
649 req->dataptr = SvPVbyte_nolen (req->data);
650 req->fd = flags; 1350 req->int1 = flags;
651 req->mode = mode; 1351 req->int2 = mode;
652 1352
653 send_req (req); 1353 REQ_SEND;
654} 1354}
655 1355
656void 1356void
657aio_close(fh,callback=&PL_sv_undef) 1357aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
658 SV * fh
659 SV * callback
660 PROTOTYPE: $;$
661 ALIAS: 1358 ALIAS:
662 aio_close = REQ_CLOSE
663 aio_fsync = REQ_FSYNC 1359 aio_fsync = EIO_FSYNC
664 aio_fdatasync = REQ_FDATASYNC 1360 aio_fdatasync = EIO_FDATASYNC
1361 aio_syncfs = EIO_SYNCFS
665 CODE: 1362 PPCODE:
666{ 1363{
1364 int fd = s_fileno_croak (fh, 0);
667 dREQ; 1365 dREQ;
668 1366
669 req->type = ix; 1367 req->type = ix;
670 req->fh = newSVsv (fh); 1368 req->sv1 = newSVsv (fh);
671 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1369 req->int1 = fd;
672 1370
673 send_req (req); 1371 REQ_SEND;
674} 1372}
675 1373
676void 1374void
1375aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1376 PPCODE:
1377{
1378 int fd = s_fileno_croak (fh, 0);
1379 dREQ;
1380
1381 req->type = EIO_SYNC_FILE_RANGE;
1382 req->sv1 = newSVsv (fh);
1383 req->int1 = fd;
1384 req->offs = offset;
1385 req->size = nbytes;
1386 req->int2 = flags;
1387
1388 REQ_SEND;
1389}
1390
1391void
1392aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1393 PPCODE:
1394{
1395 int fd = s_fileno_croak (fh, 0);
1396 dREQ;
1397
1398 req->type = EIO_FALLOCATE;
1399 req->sv1 = newSVsv (fh);
1400 req->int1 = fd;
1401 req->int2 = mode;
1402 req->offs = offset;
1403 req->size = len;
1404
1405 REQ_SEND;
1406}
1407
1408void
1409aio_close (SV *fh, SV *callback = &PL_sv_undef)
1410 PPCODE:
1411{
1412 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1413 int fd = s_fileno_croak (fh, 0);
1414 dREQ;
1415
1416 if (expect_false (close_fd < 0))
1417 {
1418 int pipefd [2];
1419
1420 if (
1421#ifdef _WIN32
1422 _pipe (pipefd, 1, _O_BINARY) < 0
1423#else
1424 pipe (pipefd) < 0
1425 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1426#endif
1427 || close (pipefd [1]) < 0
1428 )
1429 abort (); /*D*/
1430
1431 close_fd = pipefd [0];
1432 }
1433
1434 req->type = EIO_DUP2;
1435 req->int1 = close_fd;
1436 req->sv2 = newSVsv (fh);
1437 req->int2 = fd;
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1444 PPCODE:
1445{
1446 int fd = s_fileno_croak (fh, 0);
1447 dREQ;
1448
1449 req->type = EIO_SEEK;
1450 req->sv1 = newSVsv (fh);
1451 req->int1 = fd;
1452 req->offs = SvVAL64 (offset);
1453 req->int2 = whence;
1454
1455 REQ_SEND;
1456}
1457
1458void
677aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1459aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
678 SV * fh
679 UV offset
680 UV length
681 SV * data
682 UV dataoffset
683 SV * callback
684 ALIAS: 1460 ALIAS:
685 aio_read = REQ_READ 1461 aio_read = EIO_READ
686 aio_write = REQ_WRITE 1462 aio_write = EIO_WRITE
687 PROTOTYPE: $$$$$;$
688 CODE: 1463 PPCODE:
689{ 1464{
690 aio_req req;
691 STRLEN svlen; 1465 STRLEN svlen;
1466 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
692 char *svptr = SvPVbyte (data, svlen); 1467 char *svptr = SvPVbyte (data, svlen);
693 1468 UV len = SvUV (length);
694 SvUPGRADE (data, SVt_PV);
695 SvPOK_on (data);
696 1469
697 if (dataoffset < 0) 1470 if (dataoffset < 0)
698 dataoffset += svlen; 1471 dataoffset += svlen;
699 1472
700 if (dataoffset < 0 || dataoffset > svlen) 1473 if (dataoffset < 0 || dataoffset > svlen)
701 croak ("data offset outside of string"); 1474 croak ("dataoffset outside of data scalar");
702 1475
703 if (ix == REQ_WRITE) 1476 if (ix == EIO_WRITE)
704 { 1477 {
705 /* write: check length and adjust. */ 1478 /* write: check length and adjust. */
706 if (length < 0 || length + dataoffset > svlen) 1479 if (!SvOK (length) || len + dataoffset > svlen)
707 length = svlen - dataoffset; 1480 len = svlen - dataoffset;
708 } 1481 }
709 else 1482 else
710 { 1483 {
711 /* read: grow scalar as necessary */ 1484 /* read: check type and grow scalar as necessary */
1485 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
712 svptr = SvGROW (data, length + dataoffset); 1486 svptr = sv_grow (data, len + dataoffset + 1);
1487 else if (SvCUR (data) < len + dataoffset)
1488 croak ("length + dataoffset outside of scalar, and cannot grow");
713 } 1489 }
714
715 if (length < 0)
716 croak ("length must not be negative");
717 1490
718 { 1491 {
719 dREQ; 1492 dREQ;
720 1493
721 req->type = ix; 1494 req->type = ix;
722 req->fh = newSVsv (fh); 1495 req->sv1 = newSVsv (fh);
723 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1496 req->int1 = fd;
724 : IoOFP (sv_2io (fh))); 1497 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
725 req->offset = offset; 1498 req->size = len;
726 req->length = length;
727 req->data = SvREFCNT_inc (data); 1499 req->sv2 = SvREFCNT_inc (data);
728 req->dataptr = (char *)svptr + dataoffset; 1500 req->ptr2 = (char *)svptr + dataoffset;
1501 req->stroffset = dataoffset;
729 1502
730 if (!SvREADONLY (data)) 1503 if (!SvREADONLY (data))
731 { 1504 {
732 SvREADONLY_on (data); 1505 SvREADONLY_on (data);
733 req->data2ptr = (void *)data; 1506 req->flags |= FLAG_SV2_RO_OFF;
734 } 1507 }
735 1508
736 send_req (req); 1509 REQ_SEND;
737 } 1510 }
738} 1511}
739 1512
740void 1513void
741aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1514aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
742 SV * out_fh
743 SV * in_fh
744 UV in_offset
745 UV length
746 SV * callback
747 PROTOTYPE: $$$$;$
748 CODE:
749{
750 dREQ;
751
752 req->type = REQ_SENDFILE;
753 req->fh = newSVsv (out_fh);
754 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
755 req->fh2 = newSVsv (in_fh);
756 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757 req->offset = in_offset;
758 req->length = length;
759
760 send_req (req);
761}
762
763void
764aio_readahead(fh,offset,length,callback=&PL_sv_undef)
765 SV * fh
766 UV offset
767 IV length
768 SV * callback
769 PROTOTYPE: $$$;$
770 CODE:
771{
772 dREQ;
773
774 req->type = REQ_READAHEAD;
775 req->fh = newSVsv (fh);
776 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777 req->offset = offset;
778 req->length = length;
779
780 send_req (req);
781}
782
783void
784aio_stat(fh_or_path,callback=&PL_sv_undef)
785 SV * fh_or_path
786 SV * callback
787 ALIAS: 1515 ALIAS:
788 aio_stat = REQ_STAT 1516 aio_ioctl = EIO_IOCTL
789 aio_lstat = REQ_LSTAT 1517 aio_fcntl = EIO_FCNTL
790 CODE: 1518 PPCODE:
791{ 1519{
792 dREQ; 1520 int fd = s_fileno_croak (fh, 0);
1521 char *svptr;
793 1522
794 New (0, req->statdata, 1, Stat_t); 1523 if (SvPOK (arg) || !SvNIOK (arg))
795 if (!req->statdata)
796 { 1524 {
797 free_req (req); 1525 STRLEN svlen;
798 croak ("out of memory during aio_req->statdata allocation"); 1526 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
799 } 1527#ifdef IOCPARM_LEN
1528 STRLEN need = IOCPARM_LEN (request);
1529#else
1530 STRLEN need = 256;
1531#endif
800 1532
801 if (SvPOK (fh_or_path)) 1533 if (svlen < need)
802 { 1534 svptr = SvGROW (arg, need);
803 req->type = ix;
804 req->data = newSVsv (fh_or_path);
805 req->dataptr = SvPVbyte_nolen (req->data);
806 } 1535 }
807 else 1536 else
1537 svptr = (char *)SvIV (arg);
1538
808 { 1539 {
1540 dREQ;
1541
809 req->type = REQ_FSTAT; 1542 req->type = ix;
810 req->fh = newSVsv (fh_or_path); 1543 req->sv1 = newSVsv (fh);
811 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1544 req->int1 = fd;
1545 req->int2 = (long)request;
1546 req->sv2 = SvREFCNT_inc (arg);
1547 req->ptr2 = svptr;
1548
1549 REQ_SEND;
812 } 1550 }
813
814 send_req (req);
815} 1551}
816 1552
817void 1553void
818aio_unlink(pathname,callback=&PL_sv_undef) 1554aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
819 SV * pathname
820 SV * callback
821 ALIAS: 1555 ALIAS:
822 aio_unlink = REQ_UNLINK 1556 aio_readlink = EIO_READLINK
823 aio_rmdir = REQ_RMDIR 1557 aio_realpath = EIO_REALPATH
1558 PPCODE:
1559{
1560 dREQ;
1561
1562 req->type = ix;
1563 req_set_path1 (req, pathname);
1564
1565 REQ_SEND;
1566}
1567
1568void
1569aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1570 PPCODE:
1571{
1572 int ifd = s_fileno_croak (in_fh , 0);
1573 int ofd = s_fileno_croak (out_fh, 1);
1574 dREQ;
1575
1576 req->type = EIO_SENDFILE;
1577 req->sv1 = newSVsv (out_fh);
1578 req->int1 = ofd;
1579 req->sv2 = newSVsv (in_fh);
1580 req->int2 = ifd;
1581 req->offs = in_offset;
1582 req->size = length;
1583
1584 REQ_SEND;
1585}
1586
1587void
1588aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1589 PPCODE:
1590{
1591 int fd = s_fileno_croak (fh, 0);
1592 dREQ;
1593
1594 req->type = EIO_READAHEAD;
1595 req->sv1 = newSVsv (fh);
1596 req->int1 = fd;
1597 req->offs = offset;
1598 req->size = length;
1599
1600 REQ_SEND;
1601}
1602
1603void
1604aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1605 ALIAS:
1606 aio_stat = EIO_STAT
1607 aio_lstat = EIO_LSTAT
1608 aio_statvfs = EIO_STATVFS
1609 PPCODE:
1610{
1611 dREQ;
1612
1613 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1614
1615 REQ_SEND;
1616}
1617
1618UV
1619major (UV dev)
1620 ALIAS:
1621 minor = 1
824 CODE: 1622 CODE:
1623 RETVAL = ix ? minor (dev) : major (dev);
1624 OUTPUT:
1625 RETVAL
1626
1627UV
1628makedev (UV maj, UV min)
1629 CODE:
1630 RETVAL = makedev (maj, min);
1631 OUTPUT:
1632 RETVAL
1633
1634void
1635aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1636 PPCODE:
1637{
1638 dREQ;
1639
1640 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1641 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1642 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1649 PPCODE:
1650{
1651 dREQ;
1652
1653 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1654 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1655
1656 REQ_SEND;
1657}
1658
1659void
1660aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1661 PPCODE:
1662{
1663 dREQ;
1664
1665 req->int2 = mode;
1666 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1667
1668 REQ_SEND;
1669}
1670
1671void
1672aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1673 PPCODE:
1674{
1675 dREQ;
1676
1677 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1678 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1679 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1680
1681 REQ_SEND;
1682}
1683
1684void
1685aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1686 PPCODE:
1687{
1688 dREQ;
1689
1690 req->type = EIO_READDIR;
1691 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1692
1693 if (flags & EIO_READDIR_DENTS)
1694 req->int1 |= EIO_READDIR_CUSTOM2;
1695
1696 req_set_path1 (req, pathname);
1697
1698 REQ_SEND;
1699}
1700
1701void
1702aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1703 PPCODE:
1704{
1705 dREQ;
1706
1707 req->type = EIO_MKDIR;
1708 req->int2 = mode;
1709 req_set_path1 (req, pathname);
1710
1711 REQ_SEND;
1712}
1713
1714void
1715aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1716 ALIAS:
1717 aio_unlink = EIO_UNLINK
1718 aio_rmdir = EIO_RMDIR
1719 aio_readdir = EIO_READDIR
1720 PPCODE:
825{ 1721{
826 dREQ; 1722 dREQ;
827 1723
828 req->type = ix; 1724 req->type = ix;
829 req->data = newSVsv (pathname); 1725 req_set_path1 (req, pathname);
830 req->dataptr = SvPVbyte_nolen (req->data);
831
832 send_req (req);
833}
834 1726
1727 REQ_SEND;
1728}
1729
835void 1730void
836aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1731aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
837 SV * oldpath 1732 ALIAS:
838 SV * newpath 1733 aio_link = EIO_LINK
839 SV * callback 1734 aio_symlink = EIO_SYMLINK
1735 aio_rename = EIO_RENAME
840 CODE: 1736 PPCODE:
841{ 1737{
1738 eio_wd wd2 = 0;
842 dREQ; 1739 dREQ;
843 1740
844 req->type = REQ_SYMLINK; 1741 req->type = ix;
845 req->fh = newSVsv (oldpath); 1742 req_set_path1 (req, oldpath);
846 req->data2ptr = SvPVbyte_nolen (req->fh); 1743 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
847 req->data = newSVsv (newpath); 1744 req->int3 = (long)wd2;
848 req->dataptr = SvPVbyte_nolen (req->data);
849 1745
850 send_req (req); 1746 REQ_SEND;
851} 1747}
852 1748
853void 1749void
854flush() 1750aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
855 PROTOTYPE: 1751 PPCODE:
1752{
1753 eio_wd wd2 = 0;
1754 dREQ;
1755
1756 req->type = EIO_RENAME;
1757 req_set_path1 (req, oldpath);
1758 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1759 req->int2 = flags;
1760 req->int3 = (long)wd2;
1761
1762 REQ_SEND;
1763}
1764
1765void
1766aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1767 PPCODE:
1768{
1769 dREQ;
1770
1771 req->type = EIO_MKNOD;
1772 req->int2 = (mode_t)mode;
1773 req->offs = dev;
1774 req_set_path1 (req, pathname);
1775
1776 REQ_SEND;
1777}
1778
1779void
1780aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1781 ALIAS:
1782 aio_mtouch = EIO_MTOUCH
1783 aio_msync = EIO_MSYNC
1784 PPCODE:
1785{
1786 STRLEN svlen;
1787 char *svptr = SvPVbyte (data, svlen);
1788 UV len = SvUV (length);
1789
1790 if (flags < 0)
1791 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1792
1793 if (offset < 0)
1794 offset += svlen;
1795
1796 if (offset < 0 || offset > svlen)
1797 croak ("offset outside of scalar");
1798
1799 if (!SvOK (length) || len + offset > svlen)
1800 len = svlen - offset;
1801
1802 {
1803 dREQ;
1804
1805 req->type = ix;
1806 req->sv2 = SvREFCNT_inc (data);
1807 req->ptr2 = (char *)svptr + offset;
1808 req->size = len;
1809 req->int1 = flags;
1810
1811 REQ_SEND;
1812 }
1813}
1814
1815void
1816aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1817 PPCODE:
1818{
1819 STRLEN svlen;
1820 char *svptr = SvPVbyte (data, svlen);
1821 UV len = SvUV (length);
1822
1823 if (offset < 0)
1824 offset += svlen;
1825
1826 if (offset < 0 || offset > svlen)
1827 croak ("offset outside of scalar");
1828
1829 if (!SvOK (length) || len + offset > svlen)
1830 len = svlen - offset;
1831
1832 {
1833 dREQ;
1834
1835 req->type = EIO_MLOCK;
1836 req->sv2 = SvREFCNT_inc (data);
1837 req->ptr2 = (char *)svptr + offset;
1838 req->size = len;
1839
1840 REQ_SEND;
1841 }
1842}
1843
1844void
1845aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1846 PPCODE:
1847{
1848 dREQ;
1849
1850 req->type = EIO_MLOCKALL;
1851 req->int1 = flags;
1852
1853 REQ_SEND;
1854}
1855
1856void
1857aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1858 PPCODE:
1859{
1860 int fd = s_fileno_croak (fh, 0);
1861 dREQ;
1862
1863 req->type = EIO_CUSTOM;
1864 req->sv1 = newSVsv (fh);
1865 req->int1 = fd;
1866
1867 req->feed = fiemap;
1868#if HAVE_FIEMAP
1869 /* keep our fingers crossed that the next two types are 64 bit */
1870 req->offs = start;
1871 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1872 req->int2 = flags;
1873 req->int3 = SvOK (count) ? SvIV (count) : -1;
1874#endif
1875
1876 REQ_SEND;
1877}
1878
1879void
1880aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1881 PPCODE:
1882{
1883 char *svptr = 0;
1884
1885 sv_clear_foreign (data);
1886
1887 if (length) /* known length, directly read into scalar */
1888 {
1889 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1890 svptr = sv_grow (data, length + 1);
1891 else if (SvCUR (data) < length)
1892 croak ("length outside of scalar, and cannot grow");
1893 else
1894 svptr = SvPVbyte_nolen (data);
1895 }
1896
1897 {
1898 dREQ;
1899
1900 req->type = EIO_SLURP;
1901 req_set_path1 (req, pathname);
1902 req->offs = offset;
1903 req->size = length;
1904 req->sv2 = SvREFCNT_inc (data);
1905 req->ptr2 = svptr;
1906
1907 if (!SvREADONLY (data))
1908 {
1909 SvREADONLY_on (data);
1910 req->flags |= FLAG_SV2_RO_OFF;
1911 }
1912
1913 REQ_SEND;
1914 }
1915}
1916
1917void
1918aio_busy (double delay, SV *callback = &PL_sv_undef)
1919 PPCODE:
1920{
1921 dREQ;
1922
1923 req->type = EIO_BUSY;
1924 req->nv1 = delay < 0. ? 0. : delay;
1925
1926 REQ_SEND;
1927}
1928
1929void
1930aio_group (SV *callback = &PL_sv_undef)
1931 PPCODE:
1932{
1933 dREQ;
1934
1935 req->type = EIO_GROUP;
1936
1937 PUTBACK;
1938 req_submit (req);
1939 SPAGAIN;
1940
1941 XPUSHs (req_sv (req, aio_grp_stash));
1942}
1943
1944void
1945aio_nop (SV *callback = &PL_sv_undef)
1946 ALIAS:
1947 aio_nop = EIO_NOP
1948 aio_sync = EIO_SYNC
1949 PPCODE:
1950{
1951 dREQ;
1952
1953 req->type = ix;
1954
1955 REQ_SEND;
1956}
1957
1958int
1959aioreq_pri (int pri = NO_INIT)
856 CODE: 1960 CODE:
1961 RETVAL = next_pri;
1962 if (items > 0)
1963 {
1964 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1965 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1966 next_pri = pri;
1967 }
1968 OUTPUT:
1969 RETVAL
1970
1971void
1972aioreq_nice (int nice = 0)
1973 CODE:
1974 nice = next_pri - nice;
1975 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1976 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1977 next_pri = nice;
1978
1979void
1980flush ()
1981 CODE:
857 while (nreqs) 1982 while (eio_nreqs ())
858 { 1983 {
859 poll_wait (); 1984 poll_wait ();
860 poll_cb (); 1985 poll_cb ();
861 } 1986 }
862 1987
863void 1988int
864poll() 1989poll ()
865 PROTOTYPE:
866 CODE: 1990 CODE:
867 if (nreqs)
868 {
869 poll_wait (); 1991 poll_wait ();
870 poll_cb (); 1992 RETVAL = poll_cb ();
871 }
872
873int
874poll_fileno()
875 PROTOTYPE:
876 CODE:
877 RETVAL = respipe [0];
878 OUTPUT: 1993 OUTPUT:
879 RETVAL 1994 RETVAL
880 1995
881int 1996int
1997poll_fileno ()
1998 CODE:
1999 RETVAL = s_epipe_fd (&respipe);
2000 OUTPUT:
2001 RETVAL
2002
2003int
882poll_cb(...) 2004poll_cb (...)
883 PROTOTYPE: 2005 PROTOTYPE:
884 CODE: 2006 CODE:
885 RETVAL = poll_cb (); 2007 RETVAL = poll_cb ();
886 OUTPUT: 2008 OUTPUT:
887 RETVAL 2009 RETVAL
888 2010
889void 2011void
890poll_wait() 2012poll_wait ()
891 PROTOTYPE:
892 CODE: 2013 CODE:
893 if (nreqs)
894 poll_wait (); 2014 poll_wait ();
895 2015
896int 2016int
897nreqs() 2017nreqs ()
898 PROTOTYPE:
899 CODE: 2018 CODE:
900 RETVAL = nreqs; 2019 RETVAL = eio_nreqs ();
901 OUTPUT: 2020 OUTPUT:
902 RETVAL 2021 RETVAL
903 2022
2023int
2024nready ()
2025 CODE:
2026 RETVAL = eio_nready ();
2027 OUTPUT:
2028 RETVAL
2029
2030int
2031npending ()
2032 CODE:
2033 RETVAL = eio_npending ();
2034 OUTPUT:
2035 RETVAL
2036
2037int
2038nthreads ()
2039 CODE:
2040 RETVAL = eio_nthreads ();
2041 OUTPUT:
2042 RETVAL
2043
2044int
2045fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2046 CODE:
2047 RETVAL = posix_fadvise (fh, offset, length, advice);
2048 OUTPUT:
2049 RETVAL
2050
2051IV
2052sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2053 CODE:
2054 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2055 OUTPUT:
2056 RETVAL
2057
2058void
2059mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2060 PPCODE:
2061 sv_clear_foreign (scalar);
2062{
2063 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2064 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2065 if (addr == (void *)-1)
2066 XSRETURN_NO;
2067
2068 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2069
2070 if (!(prot & PROT_WRITE))
2071 SvREADONLY_on (scalar);
2072
2073 XSRETURN_YES;
2074}
2075
2076void
2077munmap (SV *scalar)
2078 CODE:
2079 sv_clear_foreign (scalar);
2080
2081SV *
2082mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2083 CODE:
2084{
2085 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2086 void *new;
2087
2088 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2089 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2090
2091 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2092
2093 RETVAL = &PL_sv_no;
2094
2095 if (new != (void *)-1)
2096 {
2097 RETVAL = new == (void *)mg->mg_ptr
2098 ? newSVpvn ("0 but true", 10)
2099 : &PL_sv_yes;
2100
2101 mg->mg_ptr = (char *)new;
2102 mg->mg_obj = (SV *)new_length;
2103
2104 SvPVX (scalar) = mg->mg_ptr;
2105 SvCUR_set (scalar, new_length);
2106 }
2107}
2108 OUTPUT:
2109 RETVAL
2110
2111int
2112madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2113 ALIAS:
2114 mprotect = 1
2115 CODE:
2116{
2117 STRLEN svlen;
2118 void *addr = SvPVbyte (scalar, svlen);
2119 STRLEN len = SvUV (length);
2120
2121 if (offset < 0)
2122 offset += svlen;
2123
2124 if (offset < 0 || offset > svlen)
2125 croak ("offset outside of scalar");
2126
2127 if (!SvOK (length) || len + offset > svlen)
2128 len = svlen - offset;
2129
2130 addr = (void *)(((intptr_t)addr) + offset);
2131 eio_page_align (&addr, &len);
2132
2133 switch (ix)
2134 {
2135 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2136 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2137 }
2138}
2139 OUTPUT:
2140 RETVAL
2141
2142int
2143munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2144 CODE:
2145{
2146 STRLEN svlen;
2147 void *addr = SvPVbyte (scalar, svlen);
2148 size_t len = SvUV (length);
2149
2150 if (offset < 0)
2151 offset += svlen;
2152
2153 if (offset < 0 || offset > svlen)
2154 croak ("offset outside of scalar");
2155
2156 if (!SvOK (length) || len + offset > svlen)
2157 len = svlen - offset;
2158
2159 addr = (void *)(((intptr_t)addr) + offset);
2160 eio_page_align (&addr, &len);
2161#if _POSIX_MEMLOCK_RANGE
2162 RETVAL = munlock (addr, len);
2163#else
2164 RETVAL = EIO_ENOSYS ();
2165#endif
2166}
2167 OUTPUT:
2168 RETVAL
2169
2170int
2171munlockall ()
2172 CODE:
2173#if _POSIX_MEMLOCK
2174 munlockall ();
2175#else
2176 RETVAL = EIO_ENOSYS ();
2177#endif
2178 OUTPUT:
2179 RETVAL
2180
2181int
2182splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2183 CODE:
2184{
2185#if HAVE_LINUX_SPLICE
2186 loff_t off_in_, off_out_;
2187 RETVAL = splice (
2188 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2189 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2190 length, flags
2191 );
2192#else
2193 RETVAL = EIO_ENOSYS ();
2194#endif
2195}
2196 OUTPUT:
2197 RETVAL
2198
2199int
2200tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2201 CODE:
2202#if HAVE_LINUX_SPLICE
2203 RETVAL = tee (rfh, wfh, length, flags);
2204#else
2205 RETVAL = EIO_ENOSYS ();
2206#endif
2207 OUTPUT:
2208 RETVAL
2209
2210int
2211pipesize (aio_rfd rfh, int new_size = -1)
2212 PROTOTYPE: $;$
2213 CODE:
2214#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2215 if (new_size >= 0)
2216 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2217 else
2218 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2219#else
2220 errno = ENOSYS;
2221 RETVAL = -1;
2222#endif
2223 OUTPUT:
2224 RETVAL
2225
2226void
2227pipe2 (int flags = 0)
2228 PROTOTYPE: ;$
2229 PPCODE:
2230{
2231 int fd[2];
2232 int res;
2233
2234 if (flags)
2235#if HAVE_PIPE2
2236 res = pipe2 (fd, flags);
2237#else
2238 res = (errno = ENOSYS, -1);
2239#endif
2240 else
2241 res = pipe (fd);
2242
2243 if (!res)
2244 {
2245 EXTEND (SP, 2);
2246 PUSHs (newmortalFH (fd[0], O_RDONLY));
2247 PUSHs (newmortalFH (fd[1], O_WRONLY));
2248 }
2249}
2250
2251void
2252eventfd (unsigned int initval = 0, int flags = 0)
2253 PPCODE:
2254{
2255 int fd;
2256#if HAVE_EVENTFD
2257 fd = eventfd (initval, flags);
2258#else
2259 fd = (errno = ENOSYS, -1);
2260#endif
2261
2262 XPUSHs (newmortalFH (fd, O_RDWR));
2263}
2264
2265void
2266timerfd_create (int clockid, int flags = 0)
2267 PPCODE:
2268{
2269 int fd;
2270#if HAVE_TIMERFD
2271 fd = timerfd_create (clockid, flags);
2272#else
2273 fd = (errno = ENOSYS, -1);
2274#endif
2275
2276 XPUSHs (newmortalFH (fd, O_RDWR));
2277}
2278
2279void
2280timerfd_settime (SV *fh, int flags, NV interval, NV value)
2281 PPCODE:
2282{
2283 int fd = s_fileno_croak (fh, 0);
2284#if HAVE_TIMERFD
2285 int res;
2286 struct itimerspec its, ots;
2287
2288 ts_set (&its.it_interval, interval);
2289 ts_set (&its.it_value , value);
2290 res = timerfd_settime (fd, flags, &its, &ots);
2291
2292 if (!res)
2293 {
2294 EXTEND (SP, 2);
2295 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2296 PUSHs (newSVnv (ts_get (&ots.it_value)));
2297 }
2298#else
2299 errno = ENOSYS;
2300#endif
2301}
2302
2303void
2304timerfd_gettime (SV *fh)
2305 PPCODE:
2306{
2307 int fd = s_fileno_croak (fh, 0);
2308#if HAVE_TIMERFD
2309 int res;
2310 struct itimerspec ots;
2311 res = timerfd_gettime (fd, &ots);
2312
2313 if (!res)
2314 {
2315 EXTEND (SP, 2);
2316 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2317 PUSHs (newSVnv (ts_get (&ots.it_value)));
2318 }
2319#else
2320 errno = ENOSYS;
2321#endif
2322}
2323
2324UV
2325get_fdlimit ()
2326 CODE:
2327#if HAVE_RLIMITS
2328 struct rlimit rl;
2329 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2330 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2331#endif
2332 XSRETURN_UNDEF;
2333 OUTPUT:
2334 RETVAL
2335
2336void
2337min_fdlimit (UV limit = 0x7fffffffU)
2338 CODE:
2339{
2340#if HAVE_RLIMITS
2341 struct rlimit rl;
2342 rlim_t orig_rlim_max;
2343 UV bit;
2344
2345 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2346 goto fail;
2347
2348 if (rl.rlim_cur == RLIM_INFINITY)
2349 XSRETURN_YES;
2350
2351 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2352
2353 if (rl.rlim_cur < limit)
2354 {
2355 rl.rlim_cur = limit;
2356
2357 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2358 rl.rlim_max = rl.rlim_cur;
2359 }
2360
2361 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2362 XSRETURN_YES;
2363
2364 if (errno == EPERM)
2365 {
2366 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2367 /* our limit overflows a system-wide limit */
2368 /* try an adaptive algorithm, but do not lower the hardlimit */
2369 rl.rlim_max = 0;
2370 for (bit = 0x40000000U; bit; bit >>= 1)
2371 {
2372 rl.rlim_max |= bit;
2373 rl.rlim_cur = rl.rlim_max;
2374
2375 /* nevr decrease the hard limit */
2376 if (rl.rlim_max < orig_rlim_max)
2377 break;
2378
2379 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2380 rl.rlim_max &= ~bit; /* too high, remove bit again */
2381 }
2382
2383 /* now, raise the soft limit to the max permitted */
2384 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2385 {
2386 rl.rlim_cur = rl.rlim_max;
2387 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2388 errno = EPERM;
2389 }
2390 }
2391#endif
2392 fail:
2393 XSRETURN_UNDEF;
2394}
2395
2396void _on_next_submit (SV *cb)
2397 CODE:
2398 SvREFCNT_dec (on_next_submit);
2399 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2400
2401PROTOTYPES: DISABLE
2402
2403MODULE = IO::AIO PACKAGE = IO::AIO::WD
2404
2405BOOT:
2406{
2407 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2408 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2409}
2410
2411void
2412DESTROY (SV *self)
2413 CODE:
2414{
2415 aio_wd wd = SvAIO_WD (self);
2416#if HAVE_AT
2417 {
2418 SV *callback = &PL_sv_undef;
2419 dREQ; /* clobbers next_pri :/ */
2420 next_pri = req->pri; /* restore next_pri */
2421 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2422 req->type = EIO_WD_CLOSE;
2423 req->wd = wd;
2424 REQ_SEND;
2425 }
2426#else
2427 eio_wd_close_sync (wd);
2428#endif
2429}
2430
2431MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2432
2433void
2434cancel (aio_req_ornot req)
2435 CODE:
2436 eio_cancel (req);
2437
2438void
2439cb (aio_req_ornot req, SV *callback = NO_INIT)
2440 PPCODE:
2441{
2442 if (GIMME_V != G_VOID)
2443 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2444
2445 if (items > 1)
2446 {
2447 SV *cb_cv = get_cb (callback);
2448
2449 SvREFCNT_dec (req->callback);
2450 req->callback = SvREFCNT_inc (cb_cv);
2451 }
2452}
2453
2454MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2455
2456void
2457add (aio_req grp, ...)
2458 PPCODE:
2459{
2460 int i;
2461
2462 if (grp->int1 == 2)
2463 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2464
2465 for (i = 1; i < items; ++i )
2466 {
2467 aio_req req;
2468
2469 if (GIMME_V != G_VOID)
2470 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2471
2472 req = SvAIO_REQ (ST (i));
2473
2474 if (req)
2475 eio_grp_add (grp, req);
2476 }
2477}
2478
2479void
2480cancel_subs (aio_req_ornot req)
2481 CODE:
2482 req_cancel_subs (req);
2483
2484void
2485result (aio_req grp, ...)
2486 CODE:
2487{
2488 int i;
2489 AV *av;
2490
2491 grp->errorno = errno;
2492
2493 av = newAV ();
2494 av_extend (av, items - 1);
2495
2496 for (i = 1; i < items; ++i )
2497 av_push (av, newSVsv (ST (i)));
2498
2499 SvREFCNT_dec (grp->sv1);
2500 grp->sv1 = (SV *)av;
2501}
2502
2503void
2504errno (aio_req grp, int errorno = errno)
2505 CODE:
2506 grp->errorno = errorno;
2507
2508void
2509limit (aio_req grp, int limit)
2510 CODE:
2511 eio_grp_limit (grp, limit);
2512
2513void
2514feed (aio_req grp, SV *callback = &PL_sv_undef)
2515 CODE:
2516{
2517 SvREFCNT_dec (grp->sv2);
2518 grp->sv2 = newSVsv (callback);
2519 grp->feed = aio_grp_feed;
2520
2521 if (grp->int2 <= 0)
2522 grp->int2 = 2;
2523
2524 eio_grp_limit (grp, grp->int2);
2525}
2526

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