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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC vs.
Revision 1.260 by root, Tue Jul 24 04:58:59 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
9 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
10#include <pthread.h> 11#endif
11 12
12#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
13#include <errno.h> 15#include <errno.h>
14#include <sys/types.h> 16#include <sys/types.h>
15#include <sys/stat.h> 17#include <sys/stat.h>
16#include <limits.h> 18#include <limits.h>
17#include <unistd.h>
18#include <fcntl.h> 19#include <fcntl.h>
19#include <signal.h>
20#include <sched.h> 20#include <sched.h>
21 21
22#if HAVE_SENDFILE 22#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
23# if __linux
24# include <sys/sendfile.h>
25# elif __freebsd
26# include <sys/socket.h>
27# include <sys/uio.h> 23# include <sys/mman.h>
28# elif __hpux 24#endif
25
26/* the incompetent fool that created musl keeps __linux__, refuses
27 * to implement any linux standard apis, and also has no way to test
28 * for his broken iplementation. don't complain to me if this fails
29 * for you.
30 */
31#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
32# include <linux/fs.h>
33# ifdef FS_IOC_FIEMAP
34# include <linux/types.h>
35# include <linux/fiemap.h>
36# define HAVE_FIEMAP 1
37# endif
38#endif
39
40/* perl namespace pollution */
41#undef VERSION
42
43/* perl stupidly overrides readdir and maybe others */
44/* with thread-unsafe versions, imagine that :( */
45#undef readdir
46#undef opendir
47#undef closedir
48
49#ifdef _WIN32
50
51 // perl overrides all those nice libc functions
52
53 #undef malloc
54 #undef free
55 #undef open
56 #undef read
57 #undef write
58 #undef send
59 #undef recv
60 #undef stat
61 #undef lstat
62 #undef fstat
63 #undef truncate
64 #undef ftruncate
65 #undef open
66 #undef link
67 #undef close
68 #undef unlink
69 #undef mkdir
70 #undef rmdir
71 #undef rename
72 #undef lseek
73 #undef opendir
74 #undef readdir
75 #undef closedir
76 #undef chmod
77 #undef fchmod
78 #undef dup
79 #undef dup2
80 #undef abort
81 #undef pipe
82
83 #define EIO_STRUCT_STAT struct _stati64
84 #define EIO_STRUCT_STATI64
85
86#else
87
29# include <sys/socket.h> 88 #include <sys/time.h>
30# elif __solaris /* not yet */
31# include <sys/sendfile.h> 89 #include <sys/select.h>
90 #include <unistd.h>
91 #include <utime.h>
92 #include <signal.h>
93
94 #define EIO_STRUCT_STAT Stat_t
95
96#endif
97
98/*****************************************************************************/
99
100#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value))
102#else
103# define expect(expr,value) (expr)
104#endif
105
106#define expect_false(expr) expect ((expr) != 0, 0)
107#define expect_true(expr) expect ((expr) != 0, 1)
108
109/*****************************************************************************/
110
111#include "libeio/config.h"
112
113#include "schmorp.h"
114
115#if HAVE_EVENTFD
116# include <sys/eventfd.h>
117#endif
118
119#if HAVE_TIMERFD
120# include <sys/timerfd.h>
121#endif
122
123#if HAVE_RLIMITS
124 #include <sys/time.h>
125 #include <sys/resource.h>
126#endif
127
128typedef SV SV8; /* byte-sv, used for argument-checking */
129typedef int aio_rfd; /* read file desriptor */
130typedef int aio_wfd; /* write file descriptor */
131
132static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
133
134#define EIO_REQ_MEMBERS \
135 SV *callback; \
136 SV *sv1, *sv2; \
137 SV *sv3, *sv4; \
138 STRLEN stroffset; \
139 SV *self;
140
141#define EIO_NO_WRAPPERS 1
142
143#include "libeio/eio.h"
144
145static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp);
148#define EIO_DESTROY(req) req_destroy (req)
149
150#include "libeio/eio.c"
151
152#if !HAVE_POSIX_FADVISE
153# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
154#endif
155
156#if !HAVE_POSIX_MADVISE
157# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
158#endif
159
160#ifndef MAP_ANONYMOUS
161# ifdef MAP_ANON
162# define MAP_ANONYMOUS MAP_ANON
32# else 163# else
33# error sendfile support requested but not available 164# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34# endif 165# endif
35#endif 166#endif
36 167
37/* used for struct dirent, AIX doesn't provide it */ 168#ifndef makedev
38#ifndef NAME_MAX 169# define makedev(maj,min) (((maj) << 8) | (min))
39# define NAME_MAX 4096
40#endif 170#endif
41 171#ifndef major
42#if __ia64 172# define major(dev) ((dev) >> 8)
43# define STACKSIZE 65536
44#else
45# define STACKSIZE 8192
46#endif 173#endif
174#ifndef minor
175# define minor(dev) ((dev) & 0xff)
176#endif
47 177
48enum { 178#if PAGESIZE <= 0
49 REQ_QUIT, 179# define PAGESIZE sysconf (_SC_PAGESIZE)
50 REQ_OPEN, REQ_CLOSE, 180#endif
51 REQ_READ, REQ_WRITE, REQ_READAHEAD, 181
52 REQ_SENDFILE, 182/*****************************************************************************/
53 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 183
54 REQ_FSYNC, REQ_FDATASYNC, 184#if !_POSIX_MAPPED_FILES
55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 185# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
56 REQ_READDIR, 186# define munmap(addr,length) EIO_ENOSYS ()
57 REQ_LINK, REQ_SYMLINK, 187#endif
188
189#if !_POSIX_MEMORY_PROTECTION
190# define mprotect(addr,len,prot) EIO_ENOSYS ()
191#endif
192
193#if !MREMAP_MAYMOVE
194# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
195#endif
196
197#define FOREIGN_MAGIC PERL_MAGIC_ext
198
199static int ecb_cold
200mmap_free (pTHX_ SV *sv, MAGIC *mg)
201{
202 int old_errno = errno;
203 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
204 errno = old_errno;
205
206 mg->mg_obj = 0; /* just in case */
207
208 SvREADONLY_off (sv);
209
210 if (SvPVX (sv) != mg->mg_ptr)
211 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
212
213 SvCUR_set (sv, 0);
214 SvPVX (sv) = 0;
215 SvOK_off (sv);
216
217 return 0;
218}
219
220static MGVTBL mmap_vtbl = {
221 0, 0, 0, 0, mmap_free
58}; 222};
59 223
60typedef struct aio_cb { 224static int ecb_cold
61 struct aio_cb *volatile next; 225sysfree_free (pTHX_ SV *sv, MAGIC *mg)
62
63 int type;
64
65 /* should receive a cleanup, with unions */
66 int fd, fd2;
67 off_t offset;
68 size_t length;
69 ssize_t result;
70 mode_t mode; /* open */
71 int errorno;
72 SV *data, *callback;
73 SV *fh, *fh2;
74 void *dataptr, *data2ptr;
75 STRLEN dataoffset;
76
77 Stat_t *statdata;
78} aio_cb;
79
80typedef aio_cb *aio_req;
81
82static int started, wanted;
83static volatile int nreqs;
84static int max_outstanding = 1<<30;
85static int respipe [2];
86
87static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
88static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
89static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90
91static volatile aio_req reqs, reqe; /* queue start, queue end */
92static volatile aio_req ress, rese; /* queue start, queue end */
93
94static void free_req (aio_req req)
95{ 226{
96 if (req->data) 227 free (mg->mg_ptr);
97 SvREFCNT_dec (req->data); 228 mg->mg_obj = 0; /* just in case */
98 229
99 if (req->fh) 230 SvREADONLY_off (sv);
100 SvREFCNT_dec (req->fh);
101 231
102 if (req->fh2) 232 if (SvPVX (sv) != mg->mg_ptr)
103 SvREFCNT_dec (req->fh2); 233 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
104 234
105 if (req->statdata) 235 SvCUR_set (sv, 0);
106 Safefree (req->statdata); 236 SvPVX (sv) = 0;
237 SvOK_off (sv);
107 238
108 if (req->callback) 239 return 0;
109 SvREFCNT_dec (req->callback);
110
111 if (req->type == REQ_READDIR && req->result >= 0)
112 free (req->data2ptr);
113
114 Safefree (req);
115} 240}
116 241
242static MGVTBL sysfree_vtbl = {
243 0, 0, 0, 0, sysfree_free
244};
245
246/*****************************************************************************/
247
248/* helper: set scalar to foreign ptr with custom free */
117static void 249static void
118poll_wait () 250sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
119{ 251{
120 if (nreqs && !ress) 252 sv_force_normal (sv);
121 {
122 fd_set rfd;
123 FD_ZERO(&rfd);
124 FD_SET(respipe [0], &rfd);
125 253
126 select (respipe [0] + 1, &rfd, 0, 0, 0); 254 /* we store the length in mg_obj, as namlen is I32 :/ */
127 } 255 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
128} 256 ->mg_obj = (SV *)length;
129 257
258 SvUPGRADE (sv, SVt_PV); /* nop... */
259
260 if (SvLEN (sv))
261 Safefree (SvPVX (sv));
262
263 SvPVX (sv) = (char *)addr;
264 SvCUR_set (sv, length);
265 SvLEN_set (sv, 0);
266 SvPOK_only (sv);
267}
268
130static int 269static void
131poll_cb () 270sv_clear_foreign (SV *sv)
132{ 271{
133 dSP; 272 /* todo: iterate over magic and only free ours, but of course */
273 /* the perl5porters will call that (correct) behaviour buggy */
274 sv_unmagic (sv, FOREIGN_MAGIC);
275}
276
277/*****************************************************************************/
278
279/* defines all sorts of constants to 0 unless they are already defined */
280/* also provides const_iv_ and const_niv_ macros for them */
281#include "def0.h"
282
283/*****************************************************************************/
284
285static void
286fiemap (eio_req *req)
287{
288 req->result = -1;
289
290#if HAVE_FIEMAP
291 /* assume some c99 */
292 struct fiemap *fiemap = 0;
293 size_t end_offset;
294 int count = req->int3;
295
296 req->flags |= EIO_FLAG_PTR1_FREE;
297
298 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
299 /* increase in 3.5kb steps */
300 if (count < 0)
134 int count = 0; 301 count = 8;
135 int do_croak = 0; 302
136 aio_req req; 303 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
304 errno = ENOMEM;
305 if (!fiemap)
306 return;
307
308 req->ptr1 = fiemap;
309
310 fiemap->fm_start = req->offs;
311 fiemap->fm_length = req->size;
312 fiemap->fm_flags = req->int2;
313 fiemap->fm_extent_count = count;
314
315 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
316 return;
317
318 if (req->int3 >= 0 /* not autosizing */
319 || !fiemap->fm_mapped_extents /* no more extents */
320 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
321 goto done;
322
323 /* else we have to loop -
324 * it would be tempting (actually I tried that first) to just query the
325 * number of extents needed, but linux often feels like not returning all
326 * extents, without telling us it left any out. this complicates
327 * this quite a bit.
328 */
329
330 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
137 331
138 for (;;) 332 for (;;)
139 { 333 {
140 pthread_mutex_lock (&reslock); 334 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
141 req = ress; 335 char scratch[3072];
336 struct fiemap *incmap = (struct fiemap *)scratch;
142 337
338 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
339 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
340 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
341 incmap->fm_flags = fiemap->fm_flags;
342 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
343
344 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
345 return;
346
347 if (!incmap->fm_mapped_extents)
348 goto done;
349
350 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
351 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
352 errno = ENOMEM;
143 if (req) 353 if (!fiemap)
354 return;
355
356 req->ptr1 = fiemap;
357
358 for (count = 0; count < incmap->fm_mapped_extents; ++count)
144 { 359 {
145 ress = req->next; 360 struct fiemap_extent *e = incmap->fm_extents + count;
146 361
147 if (!ress) 362 if (e->fe_logical + e->fe_length >= end_offset)
148 { 363 goto done;
149 /* read any signals sent by the worker threads */
150 char buf [32];
151 while (read (respipe [0], buf, 32) == 32)
152 ;
153 364
154 rese = 0; 365 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
155 }
156 }
157 366
158 pthread_mutex_unlock (&reslock); 367 if (e->fe_flags & FIEMAP_EXTENT_LAST)
368 goto done;
159 369
160 if (!req)
161 break;
162
163 nreqs--;
164
165 if (req->type == REQ_QUIT)
166 started--;
167 else
168 {
169 int errorno = errno;
170 errno = req->errorno;
171
172 if (req->type == REQ_READ)
173 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174
175 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176 SvREADONLY_off (req->data);
177
178 if (req->statdata)
179 {
180 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181 PL_laststatval = req->result;
182 PL_statcache = *(req->statdata);
183 }
184
185 ENTER;
186 PUSHMARK (SP);
187
188 if (req->type == REQ_READDIR)
189 {
190 SV *rv = &PL_sv_undef;
191
192 if (req->result >= 0)
193 {
194 char *buf = req->data2ptr;
195 AV *av = newAV ();
196
197 while (req->result)
198 {
199 SV *sv = newSVpv (buf, 0);
200
201 av_push (av, sv);
202 buf += SvCUR (sv) + 1;
203 req->result--;
204 }
205
206 rv = sv_2mortal (newRV_noinc ((SV *)av));
207 }
208
209 XPUSHs (rv);
210 }
211 else
212 {
213 XPUSHs (sv_2mortal (newSViv (req->result)));
214
215 if (req->type == REQ_OPEN)
216 {
217 /* convert fd to fh */
218 SV *fh;
219
220 PUTBACK;
221 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
222 SPAGAIN;
223
224 fh = SvREFCNT_inc (POPs);
225
226 PUSHMARK (SP);
227 XPUSHs (sv_2mortal (fh));
228 }
229 }
230
231 if (SvOK (req->callback))
232 {
233 PUTBACK;
234 call_sv (req->callback, G_VOID | G_EVAL);
235 SPAGAIN;
236
237 if (SvTRUE (ERRSV))
238 {
239 free_req (req);
240 croak (0);
241 }
242 }
243
244 LEAVE;
245
246 errno = errorno;
247 count++;
248 }
249
250 free_req (req);
251 }
252
253 return count;
254}
255
256static void *aio_proc(void *arg);
257
258static void
259start_thread (void)
260{
261 sigset_t fullsigset, oldsigset;
262 pthread_t tid;
263 pthread_attr_t attr;
264
265 pthread_attr_init (&attr);
266 pthread_attr_setstacksize (&attr, STACKSIZE);
267 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
268
269 sigfillset (&fullsigset);
270 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
271
272 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
273 started++;
274
275 sigprocmask (SIG_SETMASK, &oldsigset, 0);
276}
277
278static void
279send_req (aio_req req)
280{
281 while (started < wanted && nreqs >= started)
282 start_thread ();
283
284 nreqs++;
285
286 pthread_mutex_lock (&reqlock);
287
288 req->next = 0;
289
290 if (reqe)
291 {
292 reqe->next = req;
293 reqe = req;
294 }
295 else
296 reqe = reqs = req;
297
298 pthread_cond_signal (&reqwait);
299 pthread_mutex_unlock (&reqlock);
300
301 if (nreqs > max_outstanding)
302 for (;;)
303 {
304 poll_cb ();
305
306 if (nreqs <= max_outstanding)
307 break;
308
309 poll_wait ();
310 }
311}
312
313static void
314end_thread (void)
315{
316 aio_req req;
317 Newz (0, req, 1, aio_cb);
318 req->type = REQ_QUIT;
319
320 send_req (req);
321}
322
323static void min_parallel (int nthreads)
324{
325 if (wanted < nthreads)
326 wanted = nthreads;
327}
328
329static void max_parallel (int nthreads)
330{
331 int cur = started;
332
333 if (wanted > nthreads)
334 wanted = nthreads;
335
336 while (cur > wanted)
337 {
338 end_thread ();
339 cur--;
340 }
341
342 while (started > wanted)
343 {
344 poll_wait ();
345 poll_cb ();
346 }
347}
348
349static void create_pipe ()
350{
351 if (pipe (respipe))
352 croak ("unable to initialize result pipe");
353
354 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
355 croak ("cannot set result pipe to nonblocking mode");
356
357 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
358 croak ("cannot set result pipe to nonblocking mode");
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 preadwritelock = 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 (&preadwritelock);
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 (&preadwritelock);
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 (&preadwritelock);
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 (&preadwritelock);
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 ssize_t
416readahead (int fd, off_t offset, size_t count)
417{
418 char readahead_buf[4096];
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#if !HAVE_READDIR_R
434# define readdir_r aio_readdir_r
435
436static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437
438static int
439readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
440{
441 struct dirent *e;
442 int errorno;
443
444 pthread_mutex_lock (&readdirlock);
445
446 e = readdir (dirp);
447 errorno = errno;
448
449 if (e)
450 {
451 *res = ent;
452 strcpy (ent->d_name, e->d_name);
453 }
454 else
455 *res = 0;
456
457 pthread_mutex_unlock (&readdirlock);
458
459 errno = errorno;
460 return e ? 0 : -1;
461}
462#endif
463
464/* sendfile always needs emulation */
465static ssize_t
466sendfile_ (int ofd, int ifd, off_t offset, size_t count)
467{
468 ssize_t res;
469
470 if (!count)
471 return 0;
472
473#if HAVE_SENDFILE
474# if __linux
475 res = sendfile (ofd, ifd, &offset, count);
476
477# elif __freebsd
478 /*
479 * Of course, the freebsd sendfile is a dire hack with no thoughts
480 * wasted on making it similar to other I/O functions.
481 */
482 {
483 off_t sbytes;
484 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
485
486 if (res < 0 && sbytes)
487 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
488 res = sbytes;
489 }
490
491# elif __hpux
492 res = sendfile (ofd, ifd, offset, count, 0, 0);
493
494# elif __solaris
495 {
496 struct sendfilevec vec;
497 size_t sbytes;
498
499 vec.sfv_fd = ifd;
500 vec.sfv_flag = 0;
501 vec.sfv_off = offset;
502 vec.sfv_len = count;
503
504 res = sendfilev (ofd, &vec, 1, &sbytes);
505
506 if (res < 0 && sbytes)
507 res = sbytes;
508 }
509
510# endif
511#else
512 res = -1;
513 errno = ENOSYS;
514#endif
515
516 if (res < 0
517 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
518#if __solaris
519 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
520#endif
521 )
522 )
523 {
524 /* emulate sendfile. this is a major pain in the ass */
525 char buf[4096];
526 res = 0;
527
528 while (count)
529 {
530 ssize_t cnt;
531
532 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
533
534 if (cnt <= 0)
535 {
536 if (cnt && !res) res = -1;
537 break;
538 }
539
540 cnt = write (ofd, buf, cnt);
541
542 if (cnt <= 0)
543 {
544 if (cnt && !res) res = -1;
545 break;
546 }
547
548 offset += cnt;
549 res += cnt;
550 count -= cnt;
551 } 370 }
552 } 371 }
553 372
554 return res; 373done:
555} 374 req->result = 0;
556 375
557/* read a full directory */ 376#else
377 errno = ENOSYS;
378#endif
379}
380
381/*****************************************************************************/
382
383enum {
384 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
385};
386
387typedef eio_req *aio_req;
388typedef eio_req *aio_req_ornot;
389typedef eio_wd aio_wd;
390
391static SV *on_next_submit;
392static int next_pri = EIO_PRI_DEFAULT;
393static int max_outstanding;
394
395static s_epipe respipe;
396
397static void req_destroy (aio_req req);
398static void req_cancel (aio_req req);
399
400static void
401want_poll (void)
402{
403 /* write a dummy byte to the pipe so fh becomes ready */
404 s_epipe_signal (&respipe);
405}
406
407static void
408done_poll (void)
409{
410 /* read any signals sent by the worker threads */
411 s_epipe_drain (&respipe);
412}
413
414/* must be called at most once */
415static SV *
416req_sv (aio_req req, HV *stash)
417{
418 if (!req->self)
419 {
420 req->self = (SV *)newHV ();
421 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
422 }
423
424 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
425}
426
427static SV *
428newSVaio_wd (aio_wd wd)
429{
430 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
431}
432
433static aio_req
434SvAIO_REQ (SV *sv)
435{
436 MAGIC *mg;
437
438 if (!SvROK (sv)
439 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
440 || (SvSTASH (SvRV (sv)) != aio_grp_stash
441 && SvSTASH (SvRV (sv)) != aio_req_stash
442 && !sv_derived_from (sv, "IO::AIO::REQ")))
443 croak ("object of class IO::AIO::REQ expected");
444
445 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
446
447 return mg ? (aio_req)mg->mg_ptr : 0;
448}
449
450static aio_wd
451SvAIO_WD (SV *sv)
452{
453 if (!SvROK (sv)
454 || SvTYPE (SvRV (sv)) != SVt_PVMG
455 || SvSTASH (SvRV (sv)) != aio_wd_stash)
456 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
457
458 return (aio_wd)(long)SvIVX (SvRV (sv));
459}
460
461static SV *
462newmortalFH (int fd, int flags)
463{
464 if (fd < 0)
465 return &PL_sv_undef;
466
467 GV *gv = (GV *)sv_newmortal ();
468 char sym[64];
469 int symlen;
470
471 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
472 gv_init (gv, aio_stash, sym, symlen, 0);
473
474 symlen = snprintf (
475 sym,
476 sizeof (sym),
477 "%s&=%d",
478 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
479 fd
480 );
481
482 return do_open (gv, sym, symlen, 0, 0, 0, 0)
483 ? (SV *)gv : &PL_sv_undef;
484}
485
486static void
487aio_grp_feed (aio_req grp)
488{
489 if (grp->sv2 && SvOK (grp->sv2))
490 {
491 dSP;
492
493 ENTER;
494 SAVETMPS;
495 PUSHMARK (SP);
496 XPUSHs (req_sv (grp, aio_grp_stash));
497 PUTBACK;
498 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
499 SPAGAIN;
500 FREETMPS;
501 LEAVE;
502 }
503}
504
505static void
506req_submit (eio_req *req)
507{
508 eio_submit (req);
509
510 if (expect_false (on_next_submit))
511 {
512 dSP;
513 SV *cb = sv_2mortal (on_next_submit);
514
515 on_next_submit = 0;
516
517 PUSHMARK (SP);
518 PUTBACK;
519 call_sv (cb, G_DISCARD | G_EVAL);
520 }
521}
522
558static int 523static int
559scandir_ (const char *path, void **namesp) 524req_invoke (eio_req *req)
560{ 525{
561 DIR *dirp = opendir (path); 526 if (req->flags & FLAG_SV2_RO_OFF)
562 union 527 SvREADONLY_off (req->sv2);
563 {
564 struct dirent d;
565 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566 } u;
567 struct dirent *entp;
568 char *name, *names;
569 int memlen = 4096;
570 int memofs = 0;
571 int res = 0;
572 int errorno;
573 528
574 if (!dirp) 529 if (!EIO_CANCELLED (req) && req->callback)
575 return -1;
576
577 names = malloc (memlen);
578
579 for (;;)
580 { 530 {
581 errno = 0, readdir_r (dirp, &u.d, &entp); 531 dSP;
532 static SV *sv_result_cache; /* caches the result integer SV */
533 SV *sv_result;
582 534
583 if (!entp) 535 ENTER;
584 break; 536 SAVETMPS;
537 PUSHMARK (SP);
538 EXTEND (SP, 1);
585 539
586 name = entp->d_name; 540 /* do not recreate the result IV from scratch each time */
587 541 if (expect_true (sv_result_cache))
588 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589 { 542 {
590 int len = strlen (name) + 1; 543 sv_result = sv_result_cache; sv_result_cache = 0;
591 544 SvIV_set (sv_result, req->result);
592 res++; 545 SvIOK_only (sv_result);
593
594 while (memofs + len > memlen)
595 {
596 memlen *= 2;
597 names = realloc (names, memlen);
598 if (!names)
599 break;
600 }
601
602 memcpy (names + memofs, name, len);
603 memofs += len;
604 }
605 }
606
607 errorno = errno;
608 closedir (dirp);
609
610 if (errorno)
611 {
612 free (names);
613 errno = errorno;
614 res = -1;
615 }
616
617 *namesp = (void *)names;
618 return res;
619}
620
621/*****************************************************************************/
622
623static void *
624aio_proc (void *thr_arg)
625{
626 aio_req req;
627 int type;
628
629 do
630 {
631 pthread_mutex_lock (&reqlock);
632
633 for (;;)
634 {
635 req = reqs;
636
637 if (reqs)
638 {
639 reqs = reqs->next;
640 if (!reqs) reqe = 0;
641 }
642
643 if (req)
644 break;
645
646 pthread_cond_wait (&reqwait, &reqlock);
647 }
648
649 pthread_mutex_unlock (&reqlock);
650
651 errno = 0; /* strictly unnecessary */
652
653 type = req->type;
654
655 switch (type)
656 {
657 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
658 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659
660 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
662
663 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666
667 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668 case REQ_CLOSE: req->result = close (req->fd); break;
669 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674
675 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676 case REQ_FSYNC: req->result = fsync (req->fd); break;
677 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
678
679 case REQ_QUIT:
680 break;
681
682 default:
683 req->result = ENOSYS;
684 break;
685 }
686
687 req->errorno = errno;
688
689 pthread_mutex_lock (&reslock);
690
691 req->next = 0;
692
693 if (rese)
694 {
695 rese->next = req;
696 rese = req;
697 } 546 }
698 else 547 else
699 { 548 {
700 rese = ress = req; 549 sv_result = newSViv (req->result);
701 550 SvREADONLY_on (sv_result);
702 /* write a dummy byte to the pipe so fh becomes ready */
703 write (respipe [1], &respipe, 1);
704 } 551 }
705 552
706 pthread_mutex_unlock (&reslock); 553 switch (req->type)
554 {
555 case EIO_WD_OPEN:
556 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
557 break;
558
559 case EIO_READDIR:
560 {
561 SV *rv = &PL_sv_undef;
562
563 if (req->result >= 0)
564 {
565 int i;
566 char *names = (char *)req->ptr2;
567 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
568 AV *av = newAV ();
569
570 av_extend (av, req->result - 1);
571
572 for (i = 0; i < req->result; ++i)
573 {
574 if (req->int1 & EIO_READDIR_DENTS)
575 {
576 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
577
578 if (req->int1 & EIO_READDIR_CUSTOM2)
579 {
580 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
581 AV *avent = newAV ();
582
583 av_extend (avent, 2);
584
585 if (!sv_type [ent->type])
586 {
587 sv_type [ent->type] = newSViv (ent->type);
588 SvREADONLY_on (sv_type [ent->type]);
589 }
590
591 av_store (avent, 0, namesv);
592 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
593 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
594
595 av_store (av, i, newRV_noinc ((SV *)avent));
596 }
597 else
598 av_store (av, i, namesv);
599
600 ++ent;
601 }
602 else
603 {
604 SV *name = newSVpv (names, 0);
605 av_store (av, i, name);
606 names += SvCUR (name) + 1;
607 }
608 }
609
610 rv = sv_2mortal (newRV_noinc ((SV *)av));
611 }
612
613 PUSHs (rv);
614
615 if (req->int1 & EIO_READDIR_CUSTOM1)
616 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
617 }
618 break;
619
620 case EIO_OPEN:
621 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
622 break;
623
624 case EIO_STATVFS:
625 case EIO_FSTATVFS:
626 {
627 SV *rv = &PL_sv_undef;
628
629#ifndef _WIN32
630 if (req->result >= 0)
631 {
632 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
633 HV *hv = newHV ();
634 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
635 * chooses to make it a struct.
636 */
637 unsigned long fsid = 0;
638 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
639
640 rv = sv_2mortal (newRV_noinc ((SV *)hv));
641
642 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
643 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
644 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
645 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
646 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
647 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
648 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
649 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
650 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
651 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
652 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
653 }
654#endif
655
656 PUSHs (rv);
657 }
658
659 break;
660
661 case EIO_GROUP:
662 req->int1 = 2; /* mark group as finished */
663
664 if (req->sv1)
665 {
666 int i;
667 AV *av = (AV *)req->sv1;
668
669 EXTEND (SP, AvFILL (av) + 1);
670 for (i = 0; i <= AvFILL (av); ++i)
671 PUSHs (*av_fetch (av, i, 0));
672 }
673 break;
674
675 case EIO_NOP:
676 case EIO_BUSY:
677 break;
678
679 case EIO_READLINK:
680 case EIO_REALPATH:
681 if (req->result > 0)
682 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
683 break;
684
685 case EIO_STAT:
686 case EIO_LSTAT:
687 case EIO_FSTAT:
688 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
689
690 if (!(PL_laststatval = req->result))
691 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
692 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
693
694 PUSHs (sv_result);
695 break;
696
697 case EIO_SEEK:
698 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
699 break;
700
701 case EIO_READ:
702 {
703 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
704 *SvEND (req->sv2) = 0;
705 SvPOK_only (req->sv2);
706 SvSETMAGIC (req->sv2);
707 PUSHs (sv_result);
708 }
709 break;
710
711 case EIO_SLURP:
712 {
713 if (req->result >= 0)
714 {
715 /* if length was originally not known, we steal the malloc'ed memory */
716 if (req->flags & EIO_FLAG_PTR2_FREE)
717 {
718 req->flags &= ~EIO_FLAG_PTR2_FREE;
719 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
720 }
721 else
722 {
723 SvCUR_set (req->sv2, req->result);
724 *SvEND (req->sv2) = 0;
725 SvPOK_only (req->sv2);
726 }
727
728 SvSETMAGIC (req->sv2);
729 }
730
731 PUSHs (sv_result);
732 }
733 break;
734
735 case EIO_CUSTOM:
736 if (req->feed == fiemap)
737 {
738#if HAVE_FIEMAP
739 if (!req->result)
740 {
741 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
742
743 if (fiemap->fm_extent_count)
744 {
745 AV *av = newAV ();
746 int i;
747
748 while (fiemap->fm_mapped_extents)
749 {
750 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
751 AV *ext_av = newAV ();
752
753 av_store (ext_av, 3, newSVuv (extent->fe_flags));
754 av_store (ext_av, 2, newSVval64 (extent->fe_length));
755 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
756 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
757
758 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
759 }
760
761 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
762 }
763 else
764 {
765 SvIV_set (sv_result, fiemap->fm_mapped_extents);
766 PUSHs (sv_result);
767 }
768 }
769#endif
770 }
771 else
772 PUSHs (sv_result);
773 break;
774
775 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
776 if (req->result > 0)
777 SvIV_set (sv_result, 0);
778 /* FALLTHROUGH */
779
780 default:
781 PUSHs (sv_result);
782 break;
783 }
784
785 errno = req->errorno;
786
787 PUTBACK;
788 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
789 SPAGAIN;
790
791 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
792 SvREFCNT_dec (sv_result);
793 else
794 sv_result_cache = sv_result;
795
796 FREETMPS;
797 LEAVE;
798
799 PUTBACK;
707 } 800 }
708 while (type != REQ_QUIT);
709 801
802 return !!SvTRUE (ERRSV);
803}
804
805static void
806req_destroy (aio_req req)
807{
808 if (req->self)
809 {
810 sv_unmagic (req->self, PERL_MAGIC_ext);
811 SvREFCNT_dec (req->self);
812 }
813
814 SvREFCNT_dec (req->sv1);
815 SvREFCNT_dec (req->sv2);
816 SvREFCNT_dec (req->sv3);
817 SvREFCNT_dec (req->sv4);
818 SvREFCNT_dec (req->callback);
819
820 free (req);
821}
822
823static void
824req_cancel_subs (aio_req grp)
825{
826 if (grp->type != EIO_GROUP)
710 return 0; 827 return;
828
829 SvREFCNT_dec (grp->sv2);
830 grp->sv2 = 0;
831
832 eio_grp_cancel (grp);
833}
834
835static void ecb_cold
836create_respipe (void)
837{
838 if (s_epipe_renew (&respipe))
839 croak ("IO::AIO: unable to initialize result pipe");
840}
841
842static void
843poll_wait (void)
844{
845 while (eio_nreqs ())
846 {
847 int size;
848
849 X_LOCK (EIO_POOL->reslock);
850 size = EIO_POOL->res_queue.size;
851 X_UNLOCK (EIO_POOL->reslock);
852
853 if (size)
854 return;
855
856 etp_maybe_start_thread (EIO_POOL);
857
858 s_epipe_wait (&respipe);
859 }
860}
861
862static int
863poll_cb (void)
864{
865 for (;;)
866 {
867 int res = eio_poll ();
868
869 if (res > 0)
870 croak (0);
871
872 if (!max_outstanding || max_outstanding > eio_nreqs ())
873 return res;
874
875 poll_wait ();
876 }
877}
878
879static void ecb_cold
880reinit (void)
881{
882 create_respipe ();
883
884 if (eio_init (want_poll, done_poll) < 0)
885 croak ("IO::AIO: unable to initialise eio library");
711} 886}
712 887
713/*****************************************************************************/ 888/*****************************************************************************/
714 889
715static void atfork_prepare (void) 890static SV *
891get_cb (SV *cb_sv)
716{ 892{
717 pthread_mutex_lock (&reqlock); 893 SvGETMAGIC (cb_sv);
718 pthread_mutex_lock (&reslock); 894 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
719#if !HAVE_PREADWRITE
720 pthread_mutex_lock (&preadwritelock);
721#endif
722#if !HAVE_READDIR_R
723 pthread_mutex_lock (&readdirlock);
724#endif
725} 895}
726 896
727static void atfork_parent (void) 897static aio_req ecb_noinline
898dreq (SV *callback)
728{ 899{
729#if !HAVE_READDIR_R 900 SV *cb_cv;
730 pthread_mutex_unlock (&readdirlock);
731#endif
732#if !HAVE_PREADWRITE
733 pthread_mutex_unlock (&preadwritelock);
734#endif
735 pthread_mutex_unlock (&reslock);
736 pthread_mutex_unlock (&reqlock);
737}
738
739static void atfork_child (void)
740{
741 aio_req prv; 901 aio_req req;
902 int req_pri = next_pri;
903 next_pri = EIO_PRI_DEFAULT;
742 904
743 started = 0; 905 cb_cv = get_cb (callback);
744 906
745 while (reqs) 907 req = calloc (sizeof (*req), 1);
908 if (!req)
909 croak ("out of memory during eio_req allocation");
910
911 req->callback = SvREFCNT_inc (cb_cv);
912 req->pri = req_pri;
913
914 return req;
915}
916
917#define dREQ \
918 aio_req req = dreq (callback); \
919
920#define REQ_SEND \
921 PUTBACK; \
922 req_submit (req); \
923 SPAGAIN; \
924 \
925 if (GIMME_V != G_VOID) \
926 XPUSHs (req_sv (req, aio_req_stash));
927
928ecb_inline void
929req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
930{
931 if (expect_false (SvROK (path)))
746 { 932 {
747 prv = reqs; 933 SV *rv = SvRV (path);
748 reqs = prv->next; 934 SV *wdob;
749 free_req (prv); 935
936 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
937 {
938 path = AvARRAY (rv)[1];
939 wdob = AvARRAY (rv)[0];
940
941 if (SvOK (wdob))
942 {
943 *wd = SvAIO_WD (wdob);
944 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
945 }
946 else
947 *wd = EIO_INVALID_WD;
948 }
949 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
950 {
951 *wd = (aio_wd)(long)SvIVX (rv);
952 *wdsv = SvREFCNT_inc_NN (rv);
953 *ptr = ".";
954 return; /* path set to "." */
955 }
956 else
957 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
750 } 958 }
751 959
752 reqs = reqe = 0; 960 *pathsv = newSVsv (path);
753 961 *ptr = SvPVbyte_nolen (*pathsv);
754 while (ress) 962}
963
964static void ecb_noinline
965req_set_path1 (aio_req req, SV *path)
966{
967 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
968}
969
970static void ecb_noinline
971req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
972{
973 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
974
975 switch (SvTYPE (rv))
755 { 976 {
756 prv = ress; 977 case SVt_PVIO:
757 ress = prv->next; 978 case SVt_PVLV:
758 free_req (prv); 979 case SVt_PVGV:
980 req->type = type_fh;
981 req->sv1 = newSVsv (fh_or_path);
982 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
983 break;
984
985 default:
986 req->type = type_path;
987 req_set_path1 (req, fh_or_path);
988 break;
759 } 989 }
760
761 ress = rese = 0;
762
763 close (respipe [0]);
764 close (respipe [1]);
765 create_pipe ();
766
767 atfork_parent ();
768} 990}
769 991
770#define dREQ \ 992/*****************************************************************************/
771 aio_req req; \ 993
772 \ 994static void
773 if (SvOK (callback) && !SvROK (callback)) \ 995ts_set (struct timespec *ts, NV value)
774 croak ("clalback must be undef or of reference type"); \ 996{
775 \ 997 ts->tv_sec = value;
776 Newz (0, req, 1, aio_cb); \ 998 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
777 if (!req) \ 999}
778 croak ("out of memory during aio_req allocation"); \ 1000
779 \ 1001static NV
780 req->callback = newSVsv (callback); 1002ts_get (const struct timespec *ts)
781 1003{
1004 return ts->tv_sec + ts->tv_nsec * 1e-9;
1005}
1006
1007/*****************************************************************************/
1008
1009XS(boot_IO__AIO) ecb_cold;
1010
782MODULE = IO::AIO PACKAGE = IO::AIO 1011MODULE = IO::AIO PACKAGE = IO::AIO
783 1012
784PROTOTYPES: ENABLE 1013PROTOTYPES: ENABLE
785 1014
786BOOT: 1015BOOT:
787{ 1016{
1017 static const struct {
1018 const char *name;
1019 IV iv;
1020 } *civ, const_iv[] = {
1021# define const_niv(name, value) { # name, (IV) value },
1022# define const_iv(name) { # name, (IV) name },
1023# define const_eio(name) { # name, (IV) EIO_ ## name },
1024
1025 /* you have to re-run ./gendef0 after adding/removing any constants here */
1026 /* the first block can be undef if missing */
1027 const_iv (ENOSYS)
1028 const_iv (EXDEV)
1029 const_iv (EBADR)
1030
1031 /* for lseek */
1032 const_iv (SEEK_DATA)
1033 const_iv (SEEK_HOLE)
1034
1035 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1036 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1037 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1038 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1039 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1040 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1041
1042 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1043 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1044 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1045 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1046 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1047
1048 /* the second block will be 0 when missing */
1049 const_iv (O_ACCMODE)
1050
1051 const_iv (O_RDONLY)
1052 const_iv (O_WRONLY)
1053 const_iv (O_RDWR)
1054 const_iv (O_CREAT)
1055 const_iv (O_TRUNC)
1056 const_iv (O_EXCL)
1057 const_iv (O_APPEND)
1058
1059 const_iv (O_ASYNC)
1060 const_iv (O_DIRECT)
1061 const_iv (O_NOATIME)
1062
1063 const_iv (O_CLOEXEC)
1064 const_iv (O_NOCTTY)
1065 const_iv (O_NOFOLLOW)
1066 const_iv (O_NONBLOCK)
1067 const_iv (O_EXEC)
1068 const_iv (O_SEARCH)
1069 const_iv (O_DIRECTORY)
1070 const_iv (O_DSYNC)
1071 const_iv (O_RSYNC)
1072 const_iv (O_SYNC)
1073 const_iv (O_PATH)
1074 const_iv (O_TMPFILE)
1075 const_iv (O_TTY_INIT)
1076
1077 const_iv (S_IFIFO)
1078 const_iv (S_IFCHR)
1079 const_iv (S_IFBLK)
1080 const_iv (S_IFLNK)
1081 const_iv (S_IFREG)
1082 const_iv (S_IFDIR)
1083 const_iv (S_IFWHT)
1084 const_iv (S_IFSOCK)
1085 const_iv (S_IFMT)
1086
1087 const_iv (ST_RDONLY)
1088 const_iv (ST_NOSUID)
1089 const_iv (ST_NODEV)
1090 const_iv (ST_NOEXEC)
1091 const_iv (ST_SYNCHRONOUS)
1092 const_iv (ST_MANDLOCK)
1093 const_iv (ST_WRITE)
1094 const_iv (ST_APPEND)
1095 const_iv (ST_IMMUTABLE)
1096 const_iv (ST_NOATIME)
1097 const_iv (ST_NODIRATIME)
1098 const_iv (ST_RELATIME)
1099
1100 const_iv (PROT_NONE)
1101 const_iv (PROT_EXEC)
1102 const_iv (PROT_READ)
1103 const_iv (PROT_WRITE)
1104
1105 const_iv (MAP_PRIVATE)
1106 const_iv (MAP_SHARED)
1107 const_iv (MAP_FIXED)
1108 const_iv (MAP_ANONYMOUS)
1109
1110 /* linuxish */
1111 const_iv (MAP_LOCKED)
1112 const_iv (MAP_NORESERVE)
1113 const_iv (MAP_POPULATE)
1114 const_iv (MAP_NONBLOCK)
1115 const_iv (MAP_GROWSDOWN)
1116 const_iv (MAP_32BIT)
1117 const_iv (MAP_HUGETLB)
1118 const_iv (MAP_STACK)
1119
1120 const_iv (MREMAP_MAYMOVE)
1121 const_iv (MREMAP_FIXED)
1122
1123 const_iv (F_DUPFD_CLOEXEC)
1124
1125 const_iv (F_OFD_GETLK)
1126 const_iv (F_OFD_SETLK)
1127 const_iv (F_OFD_GETLKW)
1128
1129 const_iv (FIFREEZE)
1130 const_iv (FITHAW)
1131 const_iv (FITRIM)
1132 const_iv (FICLONE)
1133 const_iv (FICLONERANGE)
1134 const_iv (FIDEDUPERANGE)
1135
1136 const_iv (FS_IOC_GETFLAGS)
1137 const_iv (FS_IOC_SETFLAGS)
1138 const_iv (FS_IOC_GETVERSION)
1139 const_iv (FS_IOC_SETVERSION)
1140 const_iv (FS_IOC_FIEMAP)
1141 const_iv (FS_IOC_FSGETXATTR)
1142 const_iv (FS_IOC_FSSETXATTR)
1143 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1144 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1145 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1146
1147 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1148
1149 const_iv (FS_SECRM_FL)
1150 const_iv (FS_UNRM_FL)
1151 const_iv (FS_COMPR_FL)
1152 const_iv (FS_SYNC_FL)
1153 const_iv (FS_IMMUTABLE_FL)
1154 const_iv (FS_APPEND_FL)
1155 const_iv (FS_NODUMP_FL)
1156 const_iv (FS_NOATIME_FL)
1157 const_iv (FS_DIRTY_FL)
1158 const_iv (FS_COMPRBLK_FL)
1159 const_iv (FS_NOCOMP_FL)
1160 const_iv (FS_ENCRYPT_FL)
1161 const_iv (FS_BTREE_FL)
1162 const_iv (FS_INDEX_FL)
1163 const_iv (FS_JOURNAL_DATA_FL)
1164 const_iv (FS_NOTAIL_FL)
1165 const_iv (FS_DIRSYNC_FL)
1166 const_iv (FS_TOPDIR_FL)
1167 const_iv (FS_FL_USER_MODIFIABLE)
1168
1169 const_iv (FS_XFLAG_REALTIME)
1170 const_iv (FS_XFLAG_PREALLOC)
1171 const_iv (FS_XFLAG_IMMUTABLE)
1172 const_iv (FS_XFLAG_APPEND)
1173 const_iv (FS_XFLAG_SYNC)
1174 const_iv (FS_XFLAG_NOATIME)
1175 const_iv (FS_XFLAG_NODUMP)
1176 const_iv (FS_XFLAG_RTINHERIT)
1177 const_iv (FS_XFLAG_PROJINHERIT)
1178 const_iv (FS_XFLAG_NOSYMLINKS)
1179 const_iv (FS_XFLAG_EXTSIZE)
1180 const_iv (FS_XFLAG_EXTSZINHERIT)
1181 const_iv (FS_XFLAG_NODEFRAG)
1182 const_iv (FS_XFLAG_FILESTREAM)
1183 const_iv (FS_XFLAG_DAX)
1184 const_iv (FS_XFLAG_HASATTR)
1185
1186 const_iv (FIEMAP_FLAG_SYNC)
1187 const_iv (FIEMAP_FLAG_XATTR)
1188 const_iv (FIEMAP_FLAGS_COMPAT)
1189 const_iv (FIEMAP_EXTENT_LAST)
1190 const_iv (FIEMAP_EXTENT_UNKNOWN)
1191 const_iv (FIEMAP_EXTENT_DELALLOC)
1192 const_iv (FIEMAP_EXTENT_ENCODED)
1193 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1194 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1195 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1196 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1197 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1198 const_iv (FIEMAP_EXTENT_MERGED)
1199 const_iv (FIEMAP_EXTENT_SHARED)
1200
1201 const_iv (SPLICE_F_MOVE)
1202 const_iv (SPLICE_F_NONBLOCK)
1203 const_iv (SPLICE_F_MORE)
1204 const_iv (SPLICE_F_GIFT)
1205
1206 const_iv (EFD_CLOEXEC)
1207 const_iv (EFD_NONBLOCK)
1208 const_iv (EFD_SEMAPHORE)
1209
1210 const_iv (CLOCK_REALTIME)
1211 const_iv (CLOCK_MONOTONIC)
1212 const_iv (CLOCK_BOOTTIME)
1213 const_iv (CLOCK_REALTIME_ALARM)
1214 const_iv (CLOCK_BOOTTIME_ALARM)
1215
1216 const_iv (TFD_NONBLOCK)
1217 const_iv (TFD_CLOEXEC)
1218
1219 const_iv (TFD_TIMER_ABSTIME)
1220 const_iv (TFD_TIMER_CANCEL_ON_SET)
1221
1222 /* these are libeio constants, and are independent of gendef0 */
1223 const_eio (SEEK_SET)
1224 const_eio (SEEK_CUR)
1225 const_eio (SEEK_END)
1226
1227 const_eio (MCL_FUTURE)
1228 const_eio (MCL_CURRENT)
1229
1230 const_eio (MS_ASYNC)
1231 const_eio (MS_INVALIDATE)
1232 const_eio (MS_SYNC)
1233
1234 const_eio (MT_MODIFY)
1235
1236 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1237 const_eio (SYNC_FILE_RANGE_WRITE)
1238 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1239
1240 const_eio (FALLOC_FL_KEEP_SIZE)
1241 const_eio (FALLOC_FL_PUNCH_HOLE)
1242 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1243 const_eio (FALLOC_FL_ZERO_RANGE)
1244 const_eio (FALLOC_FL_INSERT_RANGE)
1245 const_eio (FALLOC_FL_UNSHARE_RANGE)
1246
1247 const_eio (RENAME_NOREPLACE)
1248 const_eio (RENAME_EXCHANGE)
1249 const_eio (RENAME_WHITEOUT)
1250
1251 const_eio (READDIR_DENTS)
1252 const_eio (READDIR_DIRS_FIRST)
1253 const_eio (READDIR_STAT_ORDER)
1254 const_eio (READDIR_FOUND_UNKNOWN)
1255
1256 const_eio (DT_UNKNOWN)
1257 const_eio (DT_FIFO)
1258 const_eio (DT_CHR)
1259 const_eio (DT_DIR)
1260 const_eio (DT_BLK)
1261 const_eio (DT_REG)
1262 const_eio (DT_LNK)
1263 const_eio (DT_SOCK)
1264 const_eio (DT_WHT)
1265 };
1266
788 HV *stash = gv_stashpv ("IO::AIO", 1); 1267 aio_stash = gv_stashpv ("IO::AIO" , 1);
789 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1268 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
790 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1269 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
791 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1270 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
792 1271
793 create_pipe (); 1272 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
794 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1273 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
795}
796 1274
1275 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1276
1277 reinit ();
1278}
1279
797void 1280void
798min_parallel (nthreads) 1281reinit ()
799 int nthreads 1282 PROTOTYPE:
1283
1284void
1285max_poll_reqs (unsigned int nreqs)
800 PROTOTYPE: $ 1286 PROTOTYPE: $
1287 CODE:
1288 eio_set_max_poll_reqs (nreqs);
801 1289
802void 1290void
803max_parallel (nthreads) 1291max_poll_time (double nseconds)
804 int nthreads
805 PROTOTYPE: $ 1292 PROTOTYPE: $
806
807int
808max_outstanding (nreqs)
809 int nreqs
810 PROTOTYPE: $
811 CODE: 1293 CODE:
812 RETVAL = max_outstanding; 1294 eio_set_max_poll_time (nseconds);
1295
1296void
1297min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299 CODE:
1300 eio_set_min_parallel (nthreads);
1301
1302void
1303max_parallel (unsigned int nthreads)
1304 PROTOTYPE: $
1305 CODE:
1306 eio_set_max_parallel (nthreads);
1307
1308void
1309max_idle (unsigned int nthreads)
1310 PROTOTYPE: $
1311 CODE:
1312 eio_set_max_idle (nthreads);
1313
1314void
1315idle_timeout (unsigned int seconds)
1316 PROTOTYPE: $
1317 CODE:
1318 eio_set_idle_timeout (seconds);
1319
1320void
1321max_outstanding (unsigned int maxreqs)
1322 PROTOTYPE: $
1323 CODE:
813 max_outstanding = nreqs; 1324 max_outstanding = maxreqs;
814 1325
815void 1326void
816aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1327aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
817 SV * pathname
818 int flags
819 int mode
820 SV * callback
821 PROTOTYPE: $$$;$
822 CODE: 1328 PPCODE:
823{ 1329{
824 dREQ; 1330 dREQ;
825 1331
1332 req->type = EIO_WD_OPEN;
1333 req_set_path1 (req, pathname);
1334
1335 REQ_SEND;
1336}
1337
1338void
1339aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1340 PPCODE:
1341{
1342 dREQ;
1343
826 req->type = REQ_OPEN; 1344 req->type = EIO_OPEN;
827 req->data = newSVsv (pathname); 1345 req_set_path1 (req, pathname);
828 req->dataptr = SvPVbyte_nolen (req->data);
829 req->fd = flags; 1346 req->int1 = flags;
830 req->mode = mode; 1347 req->int2 = mode;
831 1348
832 send_req (req); 1349 REQ_SEND;
833} 1350}
834 1351
835void 1352void
836aio_close (fh,callback=&PL_sv_undef) 1353aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
837 SV * fh
838 SV * callback
839 PROTOTYPE: $;$
840 ALIAS: 1354 ALIAS:
841 aio_close = REQ_CLOSE
842 aio_fsync = REQ_FSYNC 1355 aio_fsync = EIO_FSYNC
843 aio_fdatasync = REQ_FDATASYNC 1356 aio_fdatasync = EIO_FDATASYNC
1357 aio_syncfs = EIO_SYNCFS
844 CODE: 1358 PPCODE:
845{ 1359{
1360 int fd = s_fileno_croak (fh, 0);
846 dREQ; 1361 dREQ;
847 1362
848 req->type = ix; 1363 req->type = ix;
849 req->fh = newSVsv (fh); 1364 req->sv1 = newSVsv (fh);
850 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1365 req->int1 = fd;
851 1366
852 send_req (req); 1367 REQ_SEND;
853} 1368}
854 1369
855void 1370void
1371aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1372 PPCODE:
1373{
1374 int fd = s_fileno_croak (fh, 0);
1375 dREQ;
1376
1377 req->type = EIO_SYNC_FILE_RANGE;
1378 req->sv1 = newSVsv (fh);
1379 req->int1 = fd;
1380 req->offs = offset;
1381 req->size = nbytes;
1382 req->int2 = flags;
1383
1384 REQ_SEND;
1385}
1386
1387void
1388aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1389 PPCODE:
1390{
1391 int fd = s_fileno_croak (fh, 0);
1392 dREQ;
1393
1394 req->type = EIO_FALLOCATE;
1395 req->sv1 = newSVsv (fh);
1396 req->int1 = fd;
1397 req->int2 = mode;
1398 req->offs = offset;
1399 req->size = len;
1400
1401 REQ_SEND;
1402}
1403
1404void
1405aio_close (SV *fh, SV *callback = &PL_sv_undef)
1406 PPCODE:
1407{
1408 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1409 int fd = s_fileno_croak (fh, 0);
1410 dREQ;
1411
1412 if (expect_false (close_fd < 0))
1413 {
1414 int pipefd [2];
1415
1416 if (
1417#ifdef _WIN32
1418 _pipe (pipefd, 1, _O_BINARY) < 0
1419#else
1420 pipe (pipefd) < 0
1421 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1422#endif
1423 || close (pipefd [1]) < 0
1424 )
1425 abort (); /*D*/
1426
1427 close_fd = pipefd [0];
1428 }
1429
1430 req->type = EIO_DUP2;
1431 req->int1 = close_fd;
1432 req->sv2 = newSVsv (fh);
1433 req->int2 = fd;
1434
1435 REQ_SEND;
1436}
1437
1438void
1439aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1440 PPCODE:
1441{
1442 int fd = s_fileno_croak (fh, 0);
1443 dREQ;
1444
1445 req->type = EIO_SEEK;
1446 req->sv1 = newSVsv (fh);
1447 req->int1 = fd;
1448 req->offs = SvVAL64 (offset);
1449 req->int2 = whence;
1450
1451 REQ_SEND;
1452}
1453
1454void
856aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1455aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
857 SV * fh
858 UV offset
859 UV length
860 SV * data
861 UV dataoffset
862 SV * callback
863 ALIAS: 1456 ALIAS:
864 aio_read = REQ_READ 1457 aio_read = EIO_READ
865 aio_write = REQ_WRITE 1458 aio_write = EIO_WRITE
866 PROTOTYPE: $$$$$;$
867 CODE: 1459 PPCODE:
868{ 1460{
869 aio_req req;
870 STRLEN svlen; 1461 STRLEN svlen;
1462 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
871 char *svptr = SvPVbyte (data, svlen); 1463 char *svptr = SvPVbyte (data, svlen);
872 1464 UV len = SvUV (length);
873 SvUPGRADE (data, SVt_PV);
874 SvPOK_on (data);
875 1465
876 if (dataoffset < 0) 1466 if (dataoffset < 0)
877 dataoffset += svlen; 1467 dataoffset += svlen;
878 1468
879 if (dataoffset < 0 || dataoffset > svlen) 1469 if (dataoffset < 0 || dataoffset > svlen)
880 croak ("data offset outside of string"); 1470 croak ("dataoffset outside of data scalar");
881 1471
882 if (ix == REQ_WRITE) 1472 if (ix == EIO_WRITE)
883 { 1473 {
884 /* write: check length and adjust. */ 1474 /* write: check length and adjust. */
885 if (length < 0 || length + dataoffset > svlen) 1475 if (!SvOK (length) || len + dataoffset > svlen)
886 length = svlen - dataoffset; 1476 len = svlen - dataoffset;
887 } 1477 }
888 else 1478 else
889 { 1479 {
890 /* read: grow scalar as necessary */ 1480 /* read: check type and grow scalar as necessary */
1481 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
891 svptr = SvGROW (data, length + dataoffset); 1482 svptr = sv_grow (data, len + dataoffset + 1);
1483 else if (SvCUR (data) < len + dataoffset)
1484 croak ("length + dataoffset outside of scalar, and cannot grow");
892 } 1485 }
893
894 if (length < 0)
895 croak ("length must not be negative");
896 1486
897 { 1487 {
898 dREQ; 1488 dREQ;
899 1489
900 req->type = ix; 1490 req->type = ix;
901 req->fh = newSVsv (fh); 1491 req->sv1 = newSVsv (fh);
902 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1492 req->int1 = fd;
903 : IoOFP (sv_2io (fh))); 1493 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904 req->offset = offset; 1494 req->size = len;
905 req->length = length;
906 req->data = SvREFCNT_inc (data); 1495 req->sv2 = SvREFCNT_inc (data);
907 req->dataptr = (char *)svptr + dataoffset; 1496 req->ptr2 = (char *)svptr + dataoffset;
1497 req->stroffset = dataoffset;
908 1498
909 if (!SvREADONLY (data)) 1499 if (!SvREADONLY (data))
910 { 1500 {
911 SvREADONLY_on (data); 1501 SvREADONLY_on (data);
912 req->data2ptr = (void *)data; 1502 req->flags |= FLAG_SV2_RO_OFF;
913 } 1503 }
914 1504
915 send_req (req); 1505 REQ_SEND;
916 } 1506 }
917} 1507}
918 1508
919void 1509void
920aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1510aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
921 SV * out_fh
922 SV * in_fh
923 UV in_offset
924 UV length
925 SV * callback
926 PROTOTYPE: $$$$;$
927 CODE:
928{
929 dREQ;
930
931 req->type = REQ_SENDFILE;
932 req->fh = newSVsv (out_fh);
933 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
934 req->fh2 = newSVsv (in_fh);
935 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936 req->offset = in_offset;
937 req->length = length;
938
939 send_req (req);
940}
941
942void
943aio_readahead (fh,offset,length,callback=&PL_sv_undef)
944 SV * fh
945 UV offset
946 IV length
947 SV * callback
948 PROTOTYPE: $$$;$
949 CODE:
950{
951 dREQ;
952
953 req->type = REQ_READAHEAD;
954 req->fh = newSVsv (fh);
955 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
956 req->offset = offset;
957 req->length = length;
958
959 send_req (req);
960}
961
962void
963aio_stat (fh_or_path,callback=&PL_sv_undef)
964 SV * fh_or_path
965 SV * callback
966 ALIAS: 1511 ALIAS:
967 aio_stat = REQ_STAT 1512 aio_ioctl = EIO_IOCTL
968 aio_lstat = REQ_LSTAT 1513 aio_fcntl = EIO_FCNTL
969 CODE: 1514 PPCODE:
970{ 1515{
971 dREQ; 1516 int fd = s_fileno_croak (fh, 0);
1517 char *svptr;
972 1518
973 New (0, req->statdata, 1, Stat_t); 1519 if (SvPOK (arg) || !SvNIOK (arg))
974 if (!req->statdata)
975 { 1520 {
976 free_req (req); 1521 STRLEN svlen;
977 croak ("out of memory during aio_req->statdata allocation"); 1522 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
978 } 1523#ifdef IOCPARM_LEN
1524 STRLEN need = IOCPARM_LEN (request);
1525#else
1526 STRLEN need = 256;
1527#endif
979 1528
980 if (SvPOK (fh_or_path)) 1529 if (svlen < need)
981 { 1530 svptr = SvGROW (arg, need);
982 req->type = ix;
983 req->data = newSVsv (fh_or_path);
984 req->dataptr = SvPVbyte_nolen (req->data);
985 } 1531 }
986 else 1532 else
1533 svptr = (char *)SvIV (arg);
1534
987 { 1535 {
1536 dREQ;
1537
988 req->type = REQ_FSTAT; 1538 req->type = ix;
989 req->fh = newSVsv (fh_or_path); 1539 req->sv1 = newSVsv (fh);
990 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1540 req->int1 = fd;
1541 req->int2 = (long)request;
1542 req->sv2 = SvREFCNT_inc (arg);
1543 req->ptr2 = svptr;
1544
1545 REQ_SEND;
991 } 1546 }
992
993 send_req (req);
994} 1547}
995 1548
996void 1549void
997aio_unlink (pathname,callback=&PL_sv_undef) 1550aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
998 SV * pathname
999 SV * callback
1000 ALIAS: 1551 ALIAS:
1001 aio_unlink = REQ_UNLINK
1002 aio_rmdir = REQ_RMDIR
1003 aio_readdir = REQ_READDIR 1552 aio_readlink = EIO_READLINK
1553 aio_realpath = EIO_REALPATH
1554 PPCODE:
1555{
1556 dREQ;
1557
1558 req->type = ix;
1559 req_set_path1 (req, pathname);
1560
1561 REQ_SEND;
1562}
1563
1564void
1565aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1566 PPCODE:
1567{
1568 int ifd = s_fileno_croak (in_fh , 0);
1569 int ofd = s_fileno_croak (out_fh, 1);
1570 dREQ;
1571
1572 req->type = EIO_SENDFILE;
1573 req->sv1 = newSVsv (out_fh);
1574 req->int1 = ofd;
1575 req->sv2 = newSVsv (in_fh);
1576 req->int2 = ifd;
1577 req->offs = in_offset;
1578 req->size = length;
1579
1580 REQ_SEND;
1581}
1582
1583void
1584aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1585 PPCODE:
1586{
1587 int fd = s_fileno_croak (fh, 0);
1588 dREQ;
1589
1590 req->type = EIO_READAHEAD;
1591 req->sv1 = newSVsv (fh);
1592 req->int1 = fd;
1593 req->offs = offset;
1594 req->size = length;
1595
1596 REQ_SEND;
1597}
1598
1599void
1600aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1601 ALIAS:
1602 aio_stat = EIO_STAT
1603 aio_lstat = EIO_LSTAT
1604 aio_statvfs = EIO_STATVFS
1605 PPCODE:
1606{
1607 dREQ;
1608
1609 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1610
1611 REQ_SEND;
1612}
1613
1614UV
1615major (UV dev)
1616 ALIAS:
1617 minor = 1
1004 CODE: 1618 CODE:
1619 RETVAL = ix ? minor (dev) : major (dev);
1620 OUTPUT:
1621 RETVAL
1622
1623UV
1624makedev (UV maj, UV min)
1625 CODE:
1626 RETVAL = makedev (maj, min);
1627 OUTPUT:
1628 RETVAL
1629
1630void
1631aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1632 PPCODE:
1633{
1634 dREQ;
1635
1636 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1637 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1638 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1639
1640 REQ_SEND;
1641}
1642
1643void
1644aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1645 PPCODE:
1646{
1647 dREQ;
1648
1649 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1650 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1651
1652 REQ_SEND;
1653}
1654
1655void
1656aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1657 PPCODE:
1658{
1659 dREQ;
1660
1661 req->int2 = mode;
1662 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1663
1664 REQ_SEND;
1665}
1666
1667void
1668aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1669 PPCODE:
1670{
1671 dREQ;
1672
1673 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1674 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1675 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1676
1677 REQ_SEND;
1678}
1679
1680void
1681aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1682 PPCODE:
1683{
1684 dREQ;
1685
1686 req->type = EIO_READDIR;
1687 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1688
1689 if (flags & EIO_READDIR_DENTS)
1690 req->int1 |= EIO_READDIR_CUSTOM2;
1691
1692 req_set_path1 (req, pathname);
1693
1694 REQ_SEND;
1695}
1696
1697void
1698aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1699 PPCODE:
1700{
1701 dREQ;
1702
1703 req->type = EIO_MKDIR;
1704 req->int2 = mode;
1705 req_set_path1 (req, pathname);
1706
1707 REQ_SEND;
1708}
1709
1710void
1711aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1712 ALIAS:
1713 aio_unlink = EIO_UNLINK
1714 aio_rmdir = EIO_RMDIR
1715 aio_readdir = EIO_READDIR
1716 PPCODE:
1005{ 1717{
1006 dREQ; 1718 dREQ;
1007 1719
1008 req->type = ix; 1720 req->type = ix;
1009 req->data = newSVsv (pathname); 1721 req_set_path1 (req, pathname);
1010 req->dataptr = SvPVbyte_nolen (req->data);
1011
1012 send_req (req);
1013}
1014 1722
1723 REQ_SEND;
1724}
1725
1015void 1726void
1016aio_link (oldpath,newpath,callback=&PL_sv_undef) 1727aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1017 SV * oldpath
1018 SV * newpath
1019 SV * callback
1020 ALIAS: 1728 ALIAS:
1021 aio_link = REQ_LINK 1729 aio_link = EIO_LINK
1022 aio_symlink = REQ_SYMLINK 1730 aio_symlink = EIO_SYMLINK
1023 aio_rename = REQ_RENAME 1731 aio_rename = EIO_RENAME
1024 CODE: 1732 PPCODE:
1025{ 1733{
1734 eio_wd wd2 = 0;
1026 dREQ; 1735 dREQ;
1027 1736
1028 req->type = ix; 1737 req->type = ix;
1029 req->fh = newSVsv (oldpath); 1738 req_set_path1 (req, oldpath);
1030 req->data2ptr = SvPVbyte_nolen (req->fh); 1739 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1031 req->data = newSVsv (newpath); 1740 req->int3 = (long)wd2;
1032 req->dataptr = SvPVbyte_nolen (req->data);
1033 1741
1034 send_req (req); 1742 REQ_SEND;
1035} 1743}
1744
1745void
1746aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1747 PPCODE:
1748{
1749 eio_wd wd2 = 0;
1750 dREQ;
1751
1752 req->type = EIO_RENAME;
1753 req_set_path1 (req, oldpath);
1754 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1755 req->int2 = flags;
1756 req->int3 = (long)wd2;
1757
1758 REQ_SEND;
1759}
1760
1761void
1762aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1763 PPCODE:
1764{
1765 dREQ;
1766
1767 req->type = EIO_MKNOD;
1768 req->int2 = (mode_t)mode;
1769 req->offs = dev;
1770 req_set_path1 (req, pathname);
1771
1772 REQ_SEND;
1773}
1774
1775void
1776aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1777 ALIAS:
1778 aio_mtouch = EIO_MTOUCH
1779 aio_msync = EIO_MSYNC
1780 PPCODE:
1781{
1782 STRLEN svlen;
1783 char *svptr = SvPVbyte (data, svlen);
1784 UV len = SvUV (length);
1785
1786 if (flags < 0)
1787 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1788
1789 if (offset < 0)
1790 offset += svlen;
1791
1792 if (offset < 0 || offset > svlen)
1793 croak ("offset outside of scalar");
1794
1795 if (!SvOK (length) || len + offset > svlen)
1796 len = svlen - offset;
1797
1798 {
1799 dREQ;
1800
1801 req->type = ix;
1802 req->sv2 = SvREFCNT_inc (data);
1803 req->ptr2 = (char *)svptr + offset;
1804 req->size = len;
1805 req->int1 = flags;
1806
1807 REQ_SEND;
1808 }
1809}
1810
1811void
1812aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1813 PPCODE:
1814{
1815 STRLEN svlen;
1816 char *svptr = SvPVbyte (data, svlen);
1817 UV len = SvUV (length);
1818
1819 if (offset < 0)
1820 offset += svlen;
1821
1822 if (offset < 0 || offset > svlen)
1823 croak ("offset outside of scalar");
1824
1825 if (!SvOK (length) || len + offset > svlen)
1826 len = svlen - offset;
1827
1828 {
1829 dREQ;
1830
1831 req->type = EIO_MLOCK;
1832 req->sv2 = SvREFCNT_inc (data);
1833 req->ptr2 = (char *)svptr + offset;
1834 req->size = len;
1835
1836 REQ_SEND;
1837 }
1838}
1839
1840void
1841aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1842 PPCODE:
1843{
1844 dREQ;
1845
1846 req->type = EIO_MLOCKALL;
1847 req->int1 = flags;
1848
1849 REQ_SEND;
1850}
1851
1852void
1853aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1854 PPCODE:
1855{
1856 int fd = s_fileno_croak (fh, 0);
1857 dREQ;
1858
1859 req->type = EIO_CUSTOM;
1860 req->sv1 = newSVsv (fh);
1861 req->int1 = fd;
1862
1863 req->feed = fiemap;
1864#if HAVE_FIEMAP
1865 /* keep our fingers crossed that the next two types are 64 bit */
1866 req->offs = start;
1867 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1868 req->int2 = flags;
1869 req->int3 = SvOK (count) ? SvIV (count) : -1;
1870#endif
1871
1872 REQ_SEND;
1873}
1874
1875void
1876aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1877 PPCODE:
1878{
1879 char *svptr = 0;
1880
1881 sv_clear_foreign (data);
1882
1883 if (length) /* known length, directly read into scalar */
1884 {
1885 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1886 svptr = sv_grow (data, length + 1);
1887 else if (SvCUR (data) < length)
1888 croak ("length outside of scalar, and cannot grow");
1889 else
1890 svptr = SvPVbyte_nolen (data);
1891 }
1892
1893 {
1894 dREQ;
1895
1896 req->type = EIO_SLURP;
1897 req_set_path1 (req, pathname);
1898 req->offs = offset;
1899 req->size = length;
1900 req->sv2 = SvREFCNT_inc (data);
1901 req->ptr2 = svptr;
1902
1903 if (!SvREADONLY (data))
1904 {
1905 SvREADONLY_on (data);
1906 req->flags |= FLAG_SV2_RO_OFF;
1907 }
1908
1909 REQ_SEND;
1910 }
1911}
1912
1913void
1914aio_busy (double delay, SV *callback = &PL_sv_undef)
1915 PPCODE:
1916{
1917 dREQ;
1918
1919 req->type = EIO_BUSY;
1920 req->nv1 = delay < 0. ? 0. : delay;
1921
1922 REQ_SEND;
1923}
1924
1925void
1926aio_group (SV *callback = &PL_sv_undef)
1927 PPCODE:
1928{
1929 dREQ;
1930
1931 req->type = EIO_GROUP;
1932
1933 PUTBACK;
1934 req_submit (req);
1935 SPAGAIN;
1936
1937 XPUSHs (req_sv (req, aio_grp_stash));
1938}
1939
1940void
1941aio_nop (SV *callback = &PL_sv_undef)
1942 ALIAS:
1943 aio_nop = EIO_NOP
1944 aio_sync = EIO_SYNC
1945 PPCODE:
1946{
1947 dREQ;
1948
1949 req->type = ix;
1950
1951 REQ_SEND;
1952}
1953
1954int
1955aioreq_pri (int pri = NO_INIT)
1956 CODE:
1957 RETVAL = next_pri;
1958 if (items > 0)
1959 {
1960 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1961 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1962 next_pri = pri;
1963 }
1964 OUTPUT:
1965 RETVAL
1966
1967void
1968aioreq_nice (int nice = 0)
1969 CODE:
1970 nice = next_pri - nice;
1971 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1972 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1973 next_pri = nice;
1036 1974
1037void 1975void
1038flush () 1976flush ()
1039 PROTOTYPE:
1040 CODE: 1977 CODE:
1041 while (nreqs) 1978 while (eio_nreqs ())
1042 { 1979 {
1043 poll_wait (); 1980 poll_wait ();
1044 poll_cb (); 1981 poll_cb ();
1045 } 1982 }
1046 1983
1047void 1984int
1048poll() 1985poll ()
1049 PROTOTYPE:
1050 CODE: 1986 CODE:
1051 if (nreqs)
1052 {
1053 poll_wait (); 1987 poll_wait ();
1054 poll_cb (); 1988 RETVAL = poll_cb ();
1055 }
1056
1057int
1058poll_fileno()
1059 PROTOTYPE:
1060 CODE:
1061 RETVAL = respipe [0];
1062 OUTPUT: 1989 OUTPUT:
1063 RETVAL 1990 RETVAL
1064 1991
1065int 1992int
1993poll_fileno ()
1994 CODE:
1995 RETVAL = s_epipe_fd (&respipe);
1996 OUTPUT:
1997 RETVAL
1998
1999int
1066poll_cb(...) 2000poll_cb (...)
1067 PROTOTYPE: 2001 PROTOTYPE:
1068 CODE: 2002 CODE:
1069 RETVAL = poll_cb (); 2003 RETVAL = poll_cb ();
1070 OUTPUT: 2004 OUTPUT:
1071 RETVAL 2005 RETVAL
1072 2006
1073void 2007void
1074poll_wait() 2008poll_wait ()
1075 PROTOTYPE:
1076 CODE: 2009 CODE:
1077 if (nreqs)
1078 poll_wait (); 2010 poll_wait ();
1079 2011
1080int 2012int
1081nreqs() 2013nreqs ()
1082 PROTOTYPE:
1083 CODE: 2014 CODE:
1084 RETVAL = nreqs; 2015 RETVAL = eio_nreqs ();
1085 OUTPUT: 2016 OUTPUT:
1086 RETVAL 2017 RETVAL
1087 2018
2019int
2020nready ()
2021 CODE:
2022 RETVAL = eio_nready ();
2023 OUTPUT:
2024 RETVAL
2025
2026int
2027npending ()
2028 CODE:
2029 RETVAL = eio_npending ();
2030 OUTPUT:
2031 RETVAL
2032
2033int
2034nthreads ()
2035 CODE:
2036 RETVAL = eio_nthreads ();
2037 OUTPUT:
2038 RETVAL
2039
2040int
2041fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2042 CODE:
2043 RETVAL = posix_fadvise (fh, offset, length, advice);
2044 OUTPUT:
2045 RETVAL
2046
2047IV
2048sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2049 CODE:
2050 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2051 OUTPUT:
2052 RETVAL
2053
2054void
2055mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2056 PPCODE:
2057 sv_clear_foreign (scalar);
2058{
2059 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2060 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2061 if (addr == (void *)-1)
2062 XSRETURN_NO;
2063
2064 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2065
2066 if (!(prot & PROT_WRITE))
2067 SvREADONLY_on (scalar);
2068
2069 XSRETURN_YES;
2070}
2071
2072void
2073munmap (SV *scalar)
2074 CODE:
2075 sv_clear_foreign (scalar);
2076
2077SV *
2078mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2079 CODE:
2080{
2081 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2082 void *new;
2083
2084 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2085 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2086
2087 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2088
2089 RETVAL = &PL_sv_no;
2090
2091 if (new != (void *)-1)
2092 {
2093 RETVAL = new == (void *)mg->mg_ptr
2094 ? newSVpvn ("0 but true", 10)
2095 : &PL_sv_yes;
2096
2097 mg->mg_ptr = (char *)new;
2098 mg->mg_obj = (SV *)new_length;
2099
2100 SvPVX (scalar) = mg->mg_ptr;
2101 SvCUR_set (scalar, new_length);
2102 }
2103}
2104 OUTPUT:
2105 RETVAL
2106
2107int
2108madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2109 ALIAS:
2110 mprotect = 1
2111 CODE:
2112{
2113 STRLEN svlen;
2114 void *addr = SvPVbyte (scalar, svlen);
2115 STRLEN len = SvUV (length);
2116
2117 if (offset < 0)
2118 offset += svlen;
2119
2120 if (offset < 0 || offset > svlen)
2121 croak ("offset outside of scalar");
2122
2123 if (!SvOK (length) || len + offset > svlen)
2124 len = svlen - offset;
2125
2126 addr = (void *)(((intptr_t)addr) + offset);
2127 eio_page_align (&addr, &len);
2128
2129 switch (ix)
2130 {
2131 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2132 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2133 }
2134}
2135 OUTPUT:
2136 RETVAL
2137
2138int
2139munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2140 CODE:
2141{
2142 STRLEN svlen;
2143 void *addr = SvPVbyte (scalar, svlen);
2144 size_t len = SvUV (length);
2145
2146 if (offset < 0)
2147 offset += svlen;
2148
2149 if (offset < 0 || offset > svlen)
2150 croak ("offset outside of scalar");
2151
2152 if (!SvOK (length) || len + offset > svlen)
2153 len = svlen - offset;
2154
2155 addr = (void *)(((intptr_t)addr) + offset);
2156 eio_page_align (&addr, &len);
2157#if _POSIX_MEMLOCK_RANGE
2158 RETVAL = munlock (addr, len);
2159#else
2160 RETVAL = EIO_ENOSYS ();
2161#endif
2162}
2163 OUTPUT:
2164 RETVAL
2165
2166int
2167munlockall ()
2168 CODE:
2169#if _POSIX_MEMLOCK
2170 munlockall ();
2171#else
2172 RETVAL = EIO_ENOSYS ();
2173#endif
2174 OUTPUT:
2175 RETVAL
2176
2177int
2178splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2179 CODE:
2180{
2181#if HAVE_LINUX_SPLICE
2182 loff_t off_in_, off_out_;
2183 RETVAL = splice (
2184 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2185 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2186 length, flags
2187 );
2188#else
2189 RETVAL = EIO_ENOSYS ();
2190#endif
2191}
2192 OUTPUT:
2193 RETVAL
2194
2195int
2196tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2197 CODE:
2198#if HAVE_LINUX_SPLICE
2199 RETVAL = tee (rfh, wfh, length, flags);
2200#else
2201 RETVAL = EIO_ENOSYS ();
2202#endif
2203 OUTPUT:
2204 RETVAL
2205
2206int
2207pipesize (aio_rfd rfh, int new_size = -1)
2208 PROTOTYPE: $;$
2209 CODE:
2210#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2211 if (new_size >= 0)
2212 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2213 else
2214 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2215#else
2216 errno = ENOSYS;
2217 RETVAL = -1;
2218#endif
2219 OUTPUT:
2220 RETVAL
2221
2222void
2223pipe2 (int flags = 0)
2224 PROTOTYPE: ;$
2225 PPCODE:
2226{
2227 int fd[2];
2228 int res;
2229
2230 if (flags)
2231#if HAVE_PIPE2
2232 res = pipe2 (fd, flags);
2233#else
2234 res = (errno = ENOSYS, -1);
2235#endif
2236 else
2237 res = pipe (fd);
2238
2239 if (!res)
2240 {
2241 EXTEND (SP, 2);
2242 PUSHs (newmortalFH (fd[0], O_RDONLY));
2243 PUSHs (newmortalFH (fd[1], O_WRONLY));
2244 }
2245}
2246
2247void
2248eventfd (unsigned int initval = 0, int flags = 0)
2249 PPCODE:
2250{
2251 int fd;
2252#if HAVE_EVENTFD
2253 fd = eventfd (initval, flags);
2254#else
2255 fd = (errno = ENOSYS, -1);
2256#endif
2257
2258 XPUSHs (newmortalFH (fd, O_RDWR));
2259}
2260
2261void
2262timerfd_create (int clockid, int flags = 0)
2263 PPCODE:
2264{
2265 int fd;
2266#if HAVE_TIMERFD
2267 fd = timerfd_create (clockid, flags);
2268#else
2269 fd = (errno = ENOSYS, -1);
2270#endif
2271
2272 XPUSHs (newmortalFH (fd, O_RDWR));
2273}
2274
2275void
2276timerfd_settime (SV *fh, int flags, NV interval, NV value)
2277 PPCODE:
2278{
2279 int fd = s_fileno_croak (fh, 0);
2280#if HAVE_TIMERFD
2281 int res;
2282 struct itimerspec its, ots;
2283
2284 ts_set (&its.it_interval, interval);
2285 ts_set (&its.it_value , value);
2286 res = timerfd_settime (fd, flags, &its, &ots);
2287
2288 if (!res)
2289 {
2290 EXTEND (SP, 2);
2291 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2292 PUSHs (newSVnv (ts_get (&ots.it_value)));
2293 }
2294#else
2295 errno = ENOSYS;
2296#endif
2297}
2298
2299void
2300timerfd_gettime (SV *fh)
2301 PPCODE:
2302{
2303 int fd = s_fileno_croak (fh, 0);
2304#if HAVE_TIMERFD
2305 int res;
2306 struct itimerspec ots;
2307 res = timerfd_gettime (fd, &ots);
2308
2309 if (!res)
2310 {
2311 EXTEND (SP, 2);
2312 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2313 PUSHs (newSVnv (ts_get (&ots.it_value)));
2314 }
2315#else
2316 errno = ENOSYS;
2317#endif
2318}
2319
2320UV
2321get_fdlimit ()
2322 CODE:
2323#if HAVE_RLIMITS
2324 struct rlimit rl;
2325 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2326 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2327#endif
2328 XSRETURN_UNDEF;
2329 OUTPUT:
2330 RETVAL
2331
2332void
2333min_fdlimit (UV limit = 0x7fffffffU)
2334 CODE:
2335{
2336#if HAVE_RLIMITS
2337 struct rlimit rl;
2338 rlim_t orig_rlim_max;
2339 UV bit;
2340
2341 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2342 goto fail;
2343
2344 if (rl.rlim_cur == RLIM_INFINITY)
2345 XSRETURN_YES;
2346
2347 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2348
2349 if (rl.rlim_cur < limit)
2350 {
2351 rl.rlim_cur = limit;
2352
2353 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2354 rl.rlim_max = rl.rlim_cur;
2355 }
2356
2357 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2358 XSRETURN_YES;
2359
2360 if (errno == EPERM)
2361 {
2362 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2363 /* our limit overflows a system-wide limit */
2364 /* try an adaptive algorithm, but do not lower the hardlimit */
2365 rl.rlim_max = 0;
2366 for (bit = 0x40000000U; bit; bit >>= 1)
2367 {
2368 rl.rlim_max |= bit;
2369 rl.rlim_cur = rl.rlim_max;
2370
2371 /* nevr decrease the hard limit */
2372 if (rl.rlim_max < orig_rlim_max)
2373 break;
2374
2375 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2376 rl.rlim_max &= ~bit; /* too high, remove bit again */
2377 }
2378
2379 /* now, raise the soft limit to the max permitted */
2380 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2381 {
2382 rl.rlim_cur = rl.rlim_max;
2383 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2384 errno = EPERM;
2385 }
2386 }
2387#endif
2388 fail:
2389 XSRETURN_UNDEF;
2390}
2391
2392void _on_next_submit (SV *cb)
2393 CODE:
2394 SvREFCNT_dec (on_next_submit);
2395 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2396
2397PROTOTYPES: DISABLE
2398
2399MODULE = IO::AIO PACKAGE = IO::AIO::WD
2400
2401BOOT:
2402{
2403 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2404 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2405}
2406
2407void
2408DESTROY (SV *self)
2409 CODE:
2410{
2411 aio_wd wd = SvAIO_WD (self);
2412#if HAVE_AT
2413 {
2414 SV *callback = &PL_sv_undef;
2415 dREQ; /* clobbers next_pri :/ */
2416 next_pri = req->pri; /* restore next_pri */
2417 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2418 req->type = EIO_WD_CLOSE;
2419 req->wd = wd;
2420 REQ_SEND;
2421 }
2422#else
2423 eio_wd_close_sync (wd);
2424#endif
2425}
2426
2427MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2428
2429void
2430cancel (aio_req_ornot req)
2431 CODE:
2432 eio_cancel (req);
2433
2434void
2435cb (aio_req_ornot req, SV *callback = NO_INIT)
2436 PPCODE:
2437{
2438 if (GIMME_V != G_VOID)
2439 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2440
2441 if (items > 1)
2442 {
2443 SV *cb_cv = get_cb (callback);
2444
2445 SvREFCNT_dec (req->callback);
2446 req->callback = SvREFCNT_inc (cb_cv);
2447 }
2448}
2449
2450MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2451
2452void
2453add (aio_req grp, ...)
2454 PPCODE:
2455{
2456 int i;
2457
2458 if (grp->int1 == 2)
2459 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2460
2461 for (i = 1; i < items; ++i )
2462 {
2463 aio_req req;
2464
2465 if (GIMME_V != G_VOID)
2466 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2467
2468 req = SvAIO_REQ (ST (i));
2469
2470 if (req)
2471 eio_grp_add (grp, req);
2472 }
2473}
2474
2475void
2476cancel_subs (aio_req_ornot req)
2477 CODE:
2478 req_cancel_subs (req);
2479
2480void
2481result (aio_req grp, ...)
2482 CODE:
2483{
2484 int i;
2485 AV *av;
2486
2487 grp->errorno = errno;
2488
2489 av = newAV ();
2490 av_extend (av, items - 1);
2491
2492 for (i = 1; i < items; ++i )
2493 av_push (av, newSVsv (ST (i)));
2494
2495 SvREFCNT_dec (grp->sv1);
2496 grp->sv1 = (SV *)av;
2497}
2498
2499void
2500errno (aio_req grp, int errorno = errno)
2501 CODE:
2502 grp->errorno = errorno;
2503
2504void
2505limit (aio_req grp, int limit)
2506 CODE:
2507 eio_grp_limit (grp, limit);
2508
2509void
2510feed (aio_req grp, SV *callback = &PL_sv_undef)
2511 CODE:
2512{
2513 SvREFCNT_dec (grp->sv2);
2514 grp->sv2 = newSVsv (callback);
2515 grp->feed = aio_grp_feed;
2516
2517 if (grp->int2 <= 0)
2518 grp->int2 = 2;
2519
2520 eio_grp_limit (grp, grp->int2);
2521}
2522

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