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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.256 by root, Tue Feb 20 06:54:46 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
10#include <pthread.h>
11
12#include <stddef.h> 9#include <stddef.h>
10#include <stdlib.h>
13#include <errno.h> 11#include <errno.h>
14#include <sys/types.h> 12#include <sys/types.h>
15#include <sys/stat.h> 13#include <sys/stat.h>
16#include <limits.h> 14#include <limits.h>
17#include <unistd.h>
18#include <fcntl.h> 15#include <fcntl.h>
19#include <signal.h>
20#include <sched.h> 16#include <sched.h>
21 17
22#if HAVE_SENDFILE 18#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> 19# include <sys/mman.h>
28# elif __hpux 20#endif
21
22/* the incompetent fool that created musl keeps __linux__, refuses
23 * to implement any linux standard apis, and also has no way to test
24 * for his broken iplementation. don't complain to me if this fails
25 * for you.
26 */
27#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
28# include <linux/fs.h>
29# ifdef FS_IOC_FIEMAP
30# include <linux/types.h>
31# include <linux/fiemap.h>
32# define HAVE_FIEMAP 1
33# endif
34#endif
35
36/* perl namespace pollution */
37#undef VERSION
38
39/* perl stupidly overrides readdir and maybe others */
40/* with thread-unsafe versions, imagine that :( */
41#undef readdir
42#undef opendir
43#undef closedir
44
45#ifdef _WIN32
46
47 // perl overrides all those nice libc functions
48
49 #undef malloc
50 #undef free
51 #undef open
52 #undef read
53 #undef write
54 #undef send
55 #undef recv
56 #undef stat
57 #undef lstat
58 #undef fstat
59 #undef truncate
60 #undef ftruncate
61 #undef open
62 #undef link
63 #undef close
64 #undef unlink
65 #undef mkdir
66 #undef rmdir
67 #undef rename
68 #undef lseek
69 #undef opendir
70 #undef readdir
71 #undef closedir
72 #undef chmod
73 #undef fchmod
74 #undef dup
75 #undef dup2
76 #undef abort
77 #undef pipe
78
79 #define EIO_STRUCT_STAT struct _stati64
80 #define EIO_STRUCT_STATI64
81
82#else
83
29# include <sys/socket.h> 84 #include <sys/time.h>
30# elif __solaris /* not yet */
31# include <sys/sendfile.h> 85 #include <sys/select.h>
86 #include <unistd.h>
87 #include <utime.h>
88 #include <signal.h>
89
90 #define EIO_STRUCT_STAT Stat_t
91
92#endif
93
94/*****************************************************************************/
95
96#if __GNUC__ >= 3
97# define expect(expr,value) __builtin_expect ((expr),(value))
98#else
99# define expect(expr,value) (expr)
100#endif
101
102#define expect_false(expr) expect ((expr) != 0, 0)
103#define expect_true(expr) expect ((expr) != 0, 1)
104
105/*****************************************************************************/
106
107#include "libeio/config.h"
108
109#include "schmorp.h"
110
111#if HAVE_EVENTFD
112# include <sys/eventfd.h>
113#endif
114
115#if HAVE_TIMERFD
116# include <sys/timerfd.h>
117#endif
118
119#if HAVE_RLIMITS
120 #include <sys/time.h>
121 #include <sys/resource.h>
122#endif
123
124typedef SV SV8; /* byte-sv, used for argument-checking */
125typedef int aio_rfd; /* read file desriptor */
126typedef int aio_wfd; /* write file descriptor */
127
128static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
129
130#define EIO_REQ_MEMBERS \
131 SV *callback; \
132 SV *sv1, *sv2; \
133 SV *sv3, *sv4; \
134 STRLEN stroffset; \
135 SV *self;
136
137#define EIO_NO_WRAPPERS 1
138
139#include "libeio/eio.h"
140
141static int req_invoke (eio_req *req);
142#define EIO_FINISH(req) req_invoke (req)
143static void req_destroy (eio_req *grp);
144#define EIO_DESTROY(req) req_destroy (req)
145
146#include "libeio/eio.c"
147
148#if !HAVE_POSIX_FADVISE
149# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
150#endif
151
152#if !HAVE_POSIX_MADVISE
153# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
154#endif
155
156#ifndef MAP_ANONYMOUS
157# ifdef MAP_ANON
158# define MAP_ANONYMOUS MAP_ANON
32# else 159# else
33# error sendfile support requested but not available 160# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34# endif 161# endif
35#endif 162#endif
36 163
37/* used for struct dirent, AIX doesn't provide it */ 164/* defines all sorts of constants to 0 unless they are already defined */
38#ifndef NAME_MAX 165/* also provides const_iv_ and const_niv_ macros for them */
39# define NAME_MAX 4096 166#include "def0.h"
40#endif
41 167
42#if __ia64 168#ifndef makedev
43# define STACKSIZE 65536 169# define makedev(maj,min) (((maj) << 8) | (min))
44#else
45# define STACKSIZE 8192
46#endif 170#endif
171#ifndef major
172# define major(dev) ((dev) >> 8)
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) EIO_ENOSYS ()
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#define FOREIGN_MAGIC PERL_MAGIC_ext
194
195static int ecb_cold
196mmap_free (pTHX_ SV *sv, MAGIC *mg)
197{
198 int old_errno = errno;
199 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
200 errno = old_errno;
201
202 mg->mg_obj = 0; /* just in case */
203
204 SvREADONLY_off (sv);
205
206 if (SvPVX (sv) != mg->mg_ptr)
207 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
208
209 SvCUR_set (sv, 0);
210 SvPVX (sv) = 0;
211 SvOK_off (sv);
212
213 return 0;
214}
215
216static MGVTBL mmap_vtbl = {
217 0, 0, 0, 0, mmap_free
58}; 218};
59 219
60typedef struct aio_cb { 220static int ecb_cold
61 struct aio_cb *volatile next; 221sysfree_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{ 222{
96 if (req->data) 223 free (mg->mg_ptr);
97 SvREFCNT_dec (req->data); 224 mg->mg_obj = 0; /* just in case */
98 225
99 if (req->fh) 226 SvREADONLY_off (sv);
100 SvREFCNT_dec (req->fh);
101 227
102 if (req->fh2) 228 if (SvPVX (sv) != mg->mg_ptr)
103 SvREFCNT_dec (req->fh2); 229 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
104 230
105 if (req->statdata) 231 SvCUR_set (sv, 0);
106 Safefree (req->statdata); 232 SvPVX (sv) = 0;
233 SvOK_off (sv);
107 234
108 if (req->callback) 235 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} 236}
116 237
238static MGVTBL sysfree_vtbl = {
239 0, 0, 0, 0, sysfree_free
240};
241
242/*****************************************************************************/
243
244/* helper: set scalar to foreign ptr with custom free */
117static void 245static void
118poll_wait () 246sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
119{ 247{
120 if (nreqs && !ress) 248 sv_force_normal (sv);
121 {
122 fd_set rfd;
123 FD_ZERO(&rfd);
124 FD_SET(respipe [0], &rfd);
125 249
126 select (respipe [0] + 1, &rfd, 0, 0, 0); 250 /* we store the length in mg_obj, as namlen is I32 :/ */
127 } 251 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
128} 252 ->mg_obj = (SV *)length;
129 253
254 SvUPGRADE (sv, SVt_PV); /* nop... */
255
256 if (SvLEN (sv))
257 Safefree (SvPVX (sv));
258
259 SvPVX (sv) = (char *)addr;
260 SvCUR_set (sv, length);
261 SvLEN_set (sv, 0);
262 SvPOK_only (sv);
263}
264
130static int 265static void
131poll_cb () 266sv_clear_foreign (SV *sv)
132{ 267{
133 dSP; 268 /* todo: iterate over magic and only free ours, but of course */
269 /* the perl5porters will call that (correct) behaviour buggy */
270 sv_unmagic (sv, FOREIGN_MAGIC);
271}
272
273/*****************************************************************************/
274
275static void
276fiemap (eio_req *req)
277{
278 req->result = -1;
279
280#if HAVE_FIEMAP
281 /* assume some c99 */
282 struct fiemap *fiemap = 0;
283 size_t end_offset;
284 int count = req->int3;
285
286 req->flags |= EIO_FLAG_PTR1_FREE;
287
288 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
289 /* increase in 3.5kb steps */
290 if (count < 0)
134 int count = 0; 291 count = 8;
135 int do_croak = 0; 292
136 aio_req req; 293 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
294 errno = ENOMEM;
295 if (!fiemap)
296 return;
297
298 req->ptr1 = fiemap;
299
300 fiemap->fm_start = req->offs;
301 fiemap->fm_length = req->size;
302 fiemap->fm_flags = req->int2;
303 fiemap->fm_extent_count = count;
304
305 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
306 return;
307
308 if (req->int3 >= 0 /* not autosizing */
309 || !fiemap->fm_mapped_extents /* no more extents */
310 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
311 goto done;
312
313 /* else we have to loop -
314 * it would be tempting (actually I tried that first) to just query the
315 * number of extents needed, but linux often feels like not returning all
316 * extents, without telling us it left any out. this complicates
317 * this quite a bit.
318 */
319
320 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
137 321
138 for (;;) 322 for (;;)
139 { 323 {
140 pthread_mutex_lock (&reslock); 324 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
141 req = ress; 325 char scratch[3072];
326 struct fiemap *incmap = (struct fiemap *)scratch;
142 327
328 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
329 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
330 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
331 incmap->fm_flags = fiemap->fm_flags;
332 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
333
334 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
335 return;
336
337 if (!incmap->fm_mapped_extents)
338 goto done;
339
340 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
341 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
342 errno = ENOMEM;
143 if (req) 343 if (!fiemap)
344 return;
345
346 req->ptr1 = fiemap;
347
348 for (count = 0; count < incmap->fm_mapped_extents; ++count)
144 { 349 {
145 ress = req->next; 350 struct fiemap_extent *e = incmap->fm_extents + count;
146 351
147 if (!ress) 352 if (e->fe_logical + e->fe_length >= end_offset)
148 { 353 goto done;
149 /* read any signals sent by the worker threads */
150 char buf [32];
151 while (read (respipe [0], buf, 32) == 32)
152 ;
153 354
154 rese = 0; 355 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
155 }
156 }
157 356
158 pthread_mutex_unlock (&reslock); 357 if (e->fe_flags & FIEMAP_EXTENT_LAST)
358 goto done;
159 359
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 } 360 }
552 } 361 }
553 362
554 return res; 363done:
555} 364 req->result = 0;
556 365
557/* read a full directory */ 366#else
367 errno = ENOSYS;
368#endif
369}
370
371/*****************************************************************************/
372
373enum {
374 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
375};
376
377typedef eio_req *aio_req;
378typedef eio_req *aio_req_ornot;
379typedef eio_wd aio_wd;
380
381static SV *on_next_submit;
382static int next_pri = EIO_PRI_DEFAULT;
383static int max_outstanding;
384
385static s_epipe respipe;
386
387static void req_destroy (aio_req req);
388static void req_cancel (aio_req req);
389
390static void
391want_poll (void)
392{
393 /* write a dummy byte to the pipe so fh becomes ready */
394 s_epipe_signal (&respipe);
395}
396
397static void
398done_poll (void)
399{
400 /* read any signals sent by the worker threads */
401 s_epipe_drain (&respipe);
402}
403
404/* must be called at most once */
405static SV *
406req_sv (aio_req req, HV *stash)
407{
408 if (!req->self)
409 {
410 req->self = (SV *)newHV ();
411 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
412 }
413
414 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
415}
416
417static SV *
418newSVaio_wd (aio_wd wd)
419{
420 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
421}
422
423static aio_req
424SvAIO_REQ (SV *sv)
425{
426 MAGIC *mg;
427
428 if (!SvROK (sv)
429 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
430 || (SvSTASH (SvRV (sv)) != aio_grp_stash
431 && SvSTASH (SvRV (sv)) != aio_req_stash
432 && !sv_derived_from (sv, "IO::AIO::REQ")))
433 croak ("object of class IO::AIO::REQ expected");
434
435 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
436
437 return mg ? (aio_req)mg->mg_ptr : 0;
438}
439
440static aio_wd
441SvAIO_WD (SV *sv)
442{
443 if (!SvROK (sv)
444 || SvTYPE (SvRV (sv)) != SVt_PVMG
445 || SvSTASH (SvRV (sv)) != aio_wd_stash)
446 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
447
448 return (aio_wd)(long)SvIVX (SvRV (sv));
449}
450
451static SV *
452newmortalFH (int fd, int flags)
453{
454 if (fd < 0)
455 return &PL_sv_undef;
456
457 GV *gv = (GV *)sv_newmortal ();
458 char sym[64];
459 int symlen;
460
461 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
462 gv_init (gv, aio_stash, sym, symlen, 0);
463
464 symlen = snprintf (
465 sym,
466 sizeof (sym),
467 "%s&=%d",
468 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
469 fd
470 );
471
472 return do_open (gv, sym, symlen, 0, 0, 0, 0)
473 ? (SV *)gv : &PL_sv_undef;
474}
475
476static void
477aio_grp_feed (aio_req grp)
478{
479 if (grp->sv2 && SvOK (grp->sv2))
480 {
481 dSP;
482
483 ENTER;
484 SAVETMPS;
485 PUSHMARK (SP);
486 XPUSHs (req_sv (grp, aio_grp_stash));
487 PUTBACK;
488 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
489 SPAGAIN;
490 FREETMPS;
491 LEAVE;
492 }
493}
494
495static void
496req_submit (eio_req *req)
497{
498 eio_submit (req);
499
500 if (expect_false (on_next_submit))
501 {
502 dSP;
503 SV *cb = sv_2mortal (on_next_submit);
504
505 on_next_submit = 0;
506
507 PUSHMARK (SP);
508 PUTBACK;
509 call_sv (cb, G_DISCARD | G_EVAL);
510 }
511}
512
558static int 513static int
559scandir_ (const char *path, void **namesp) 514req_invoke (eio_req *req)
560{ 515{
561 DIR *dirp = opendir (path); 516 if (req->flags & FLAG_SV2_RO_OFF)
562 union 517 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;
573 518
574 if (!dirp) 519 if (!EIO_CANCELLED (req) && req->callback)
575 return -1;
576
577 names = malloc (memlen);
578
579 for (;;)
580 { 520 {
581 errno = 0, readdir_r (dirp, &u.d, &entp); 521 dSP;
522 static SV *sv_result_cache; /* caches the result integer SV */
523 SV *sv_result;
582 524
583 if (!entp) 525 ENTER;
584 break; 526 SAVETMPS;
527 PUSHMARK (SP);
528 EXTEND (SP, 1);
585 529
586 name = entp->d_name; 530 /* do not recreate the result IV from scratch each time */
587 531 if (expect_true (sv_result_cache))
588 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589 { 532 {
590 int len = strlen (name) + 1; 533 sv_result = sv_result_cache; sv_result_cache = 0;
591 534 SvIV_set (sv_result, req->result);
592 res++; 535 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 } 536 }
698 else 537 else
699 { 538 {
700 rese = ress = req; 539 sv_result = newSViv (req->result);
701 540 SvREADONLY_on (sv_result);
702 /* write a dummy byte to the pipe so fh becomes ready */
703 write (respipe [1], &respipe, 1);
704 } 541 }
705 542
706 pthread_mutex_unlock (&reslock); 543 switch (req->type)
544 {
545 case EIO_WD_OPEN:
546 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
547 break;
548
549 case EIO_READDIR:
550 {
551 SV *rv = &PL_sv_undef;
552
553 if (req->result >= 0)
554 {
555 int i;
556 char *names = (char *)req->ptr2;
557 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
558 AV *av = newAV ();
559
560 av_extend (av, req->result - 1);
561
562 for (i = 0; i < req->result; ++i)
563 {
564 if (req->int1 & EIO_READDIR_DENTS)
565 {
566 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
567
568 if (req->int1 & EIO_READDIR_CUSTOM2)
569 {
570 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
571 AV *avent = newAV ();
572
573 av_extend (avent, 2);
574
575 if (!sv_type [ent->type])
576 {
577 sv_type [ent->type] = newSViv (ent->type);
578 SvREADONLY_on (sv_type [ent->type]);
579 }
580
581 av_store (avent, 0, namesv);
582 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
583 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
584
585 av_store (av, i, newRV_noinc ((SV *)avent));
586 }
587 else
588 av_store (av, i, namesv);
589
590 ++ent;
591 }
592 else
593 {
594 SV *name = newSVpv (names, 0);
595 av_store (av, i, name);
596 names += SvCUR (name) + 1;
597 }
598 }
599
600 rv = sv_2mortal (newRV_noinc ((SV *)av));
601 }
602
603 PUSHs (rv);
604
605 if (req->int1 & EIO_READDIR_CUSTOM1)
606 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
607 }
608 break;
609
610 case EIO_OPEN:
611 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
612 break;
613
614 case EIO_STATVFS:
615 case EIO_FSTATVFS:
616 {
617 SV *rv = &PL_sv_undef;
618
619#ifndef _WIN32
620 if (req->result >= 0)
621 {
622 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
623 HV *hv = newHV ();
624 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
625 * chooses to make it a struct.
626 */
627 unsigned long fsid = 0;
628 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
629
630 rv = sv_2mortal (newRV_noinc ((SV *)hv));
631
632 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
633 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
634 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
635 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
636 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
637 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
638 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
639 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
640 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
641 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
642 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
643 }
644#endif
645
646 PUSHs (rv);
647 }
648
649 break;
650
651 case EIO_GROUP:
652 req->int1 = 2; /* mark group as finished */
653
654 if (req->sv1)
655 {
656 int i;
657 AV *av = (AV *)req->sv1;
658
659 EXTEND (SP, AvFILL (av) + 1);
660 for (i = 0; i <= AvFILL (av); ++i)
661 PUSHs (*av_fetch (av, i, 0));
662 }
663 break;
664
665 case EIO_NOP:
666 case EIO_BUSY:
667 break;
668
669 case EIO_READLINK:
670 case EIO_REALPATH:
671 if (req->result > 0)
672 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
673 break;
674
675 case EIO_STAT:
676 case EIO_LSTAT:
677 case EIO_FSTAT:
678 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
679
680 if (!(PL_laststatval = req->result))
681 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
682 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
683
684 PUSHs (sv_result);
685 break;
686
687 case EIO_SEEK:
688 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
689 break;
690
691 case EIO_READ:
692 {
693 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
694 *SvEND (req->sv2) = 0;
695 SvPOK_only (req->sv2);
696 SvSETMAGIC (req->sv2);
697 PUSHs (sv_result);
698 }
699 break;
700
701 case EIO_SLURP:
702 {
703 if (req->result >= 0)
704 {
705 /* if length was originally not known, we steal the malloc'ed memory */
706 if (req->flags & EIO_FLAG_PTR2_FREE)
707 {
708 req->flags &= ~EIO_FLAG_PTR2_FREE;
709 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
710 }
711 else
712 {
713 SvCUR_set (req->sv2, req->result);
714 *SvEND (req->sv2) = 0;
715 SvPOK_only (req->sv2);
716 }
717
718 SvSETMAGIC (req->sv2);
719 }
720
721 PUSHs (sv_result);
722 }
723 break;
724
725 case EIO_CUSTOM:
726 if (req->feed == fiemap)
727 {
728#if HAVE_FIEMAP
729 if (!req->result)
730 {
731 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
732
733 if (fiemap->fm_extent_count)
734 {
735 AV *av = newAV ();
736 int i;
737
738 while (fiemap->fm_mapped_extents)
739 {
740 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
741 AV *ext_av = newAV ();
742
743 av_store (ext_av, 3, newSVuv (extent->fe_flags));
744 av_store (ext_av, 2, newSVval64 (extent->fe_length));
745 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
746 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
747
748 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
749 }
750
751 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
752 }
753 else
754 {
755 SvIV_set (sv_result, fiemap->fm_mapped_extents);
756 PUSHs (sv_result);
757 }
758 }
759#endif
760 }
761 else
762 PUSHs (sv_result);
763 break;
764
765 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
766 if (req->result > 0)
767 SvIV_set (sv_result, 0);
768 /* FALLTHROUGH */
769
770 default:
771 PUSHs (sv_result);
772 break;
773 }
774
775 errno = req->errorno;
776
777 PUTBACK;
778 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
779 SPAGAIN;
780
781 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
782 SvREFCNT_dec (sv_result);
783 else
784 sv_result_cache = sv_result;
785
786 FREETMPS;
787 LEAVE;
788
789 PUTBACK;
707 } 790 }
708 while (type != REQ_QUIT);
709 791
792 return !!SvTRUE (ERRSV);
793}
794
795static void
796req_destroy (aio_req req)
797{
798 if (req->self)
799 {
800 sv_unmagic (req->self, PERL_MAGIC_ext);
801 SvREFCNT_dec (req->self);
802 }
803
804 SvREFCNT_dec (req->sv1);
805 SvREFCNT_dec (req->sv2);
806 SvREFCNT_dec (req->sv3);
807 SvREFCNT_dec (req->sv4);
808 SvREFCNT_dec (req->callback);
809
810 free (req);
811}
812
813static void
814req_cancel_subs (aio_req grp)
815{
816 if (grp->type != EIO_GROUP)
710 return 0; 817 return;
818
819 SvREFCNT_dec (grp->sv2);
820 grp->sv2 = 0;
821
822 eio_grp_cancel (grp);
823}
824
825static void ecb_cold
826create_respipe (void)
827{
828 if (s_epipe_renew (&respipe))
829 croak ("IO::AIO: unable to initialize result pipe");
830}
831
832static void
833poll_wait (void)
834{
835 while (eio_nreqs ())
836 {
837 int size;
838
839 X_LOCK (EIO_POOL->reslock);
840 size = EIO_POOL->res_queue.size;
841 X_UNLOCK (EIO_POOL->reslock);
842
843 if (size)
844 return;
845
846 etp_maybe_start_thread (EIO_POOL);
847
848 s_epipe_wait (&respipe);
849 }
850}
851
852static int
853poll_cb (void)
854{
855 for (;;)
856 {
857 int res = eio_poll ();
858
859 if (res > 0)
860 croak (0);
861
862 if (!max_outstanding || max_outstanding > eio_nreqs ())
863 return res;
864
865 poll_wait ();
866 }
867}
868
869static void ecb_cold
870reinit (void)
871{
872 create_respipe ();
873
874 if (eio_init (want_poll, done_poll) < 0)
875 croak ("IO::AIO: unable to initialise eio library");
711} 876}
712 877
713/*****************************************************************************/ 878/*****************************************************************************/
714 879
715static void atfork_prepare (void) 880static SV *
881get_cb (SV *cb_sv)
716{ 882{
717 pthread_mutex_lock (&reqlock); 883 SvGETMAGIC (cb_sv);
718 pthread_mutex_lock (&reslock); 884 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} 885}
726 886
727static void atfork_parent (void) 887static aio_req ecb_noinline
888dreq (SV *callback)
728{ 889{
729#if !HAVE_READDIR_R 890 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; 891 aio_req req;
892 int req_pri = next_pri;
893 next_pri = EIO_PRI_DEFAULT;
742 894
743 started = 0; 895 cb_cv = get_cb (callback);
744 896
745 while (reqs) 897 req = calloc (sizeof (*req), 1);
898 if (!req)
899 croak ("out of memory during eio_req allocation");
900
901 req->callback = SvREFCNT_inc (cb_cv);
902 req->pri = req_pri;
903
904 return req;
905}
906
907#define dREQ \
908 aio_req req = dreq (callback); \
909
910#define REQ_SEND \
911 PUTBACK; \
912 req_submit (req); \
913 SPAGAIN; \
914 \
915 if (GIMME_V != G_VOID) \
916 XPUSHs (req_sv (req, aio_req_stash));
917
918ecb_inline void
919req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
920{
921 if (expect_false (SvROK (path)))
746 { 922 {
747 prv = reqs; 923 SV *rv = SvRV (path);
748 reqs = prv->next; 924 SV *wdob;
749 free_req (prv); 925
926 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
927 {
928 path = AvARRAY (rv)[1];
929 wdob = AvARRAY (rv)[0];
930
931 if (SvOK (wdob))
932 {
933 *wd = SvAIO_WD (wdob);
934 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
935 }
936 else
937 *wd = EIO_INVALID_WD;
938 }
939 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
940 {
941 *wd = (aio_wd)(long)SvIVX (rv);
942 *wdsv = SvREFCNT_inc_NN (rv);
943 *ptr = ".";
944 return; /* path set to "." */
945 }
946 else
947 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
750 } 948 }
751 949
752 reqs = reqe = 0; 950 *pathsv = newSVsv (path);
753 951 *ptr = SvPVbyte_nolen (*pathsv);
754 while (ress) 952}
953
954static void ecb_noinline
955req_set_path1 (aio_req req, SV *path)
956{
957 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
958}
959
960static void ecb_noinline
961req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
962{
963 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
964
965 switch (SvTYPE (rv))
755 { 966 {
756 prv = ress; 967 case SVt_PVIO:
757 ress = prv->next; 968 case SVt_PVLV:
758 free_req (prv); 969 case SVt_PVGV:
970 req->type = type_fh;
971 req->sv1 = newSVsv (fh_or_path);
972 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
973 break;
974
975 default:
976 req->type = type_path;
977 req_set_path1 (req, fh_or_path);
978 break;
759 } 979 }
760
761 ress = rese = 0;
762
763 close (respipe [0]);
764 close (respipe [1]);
765 create_pipe ();
766
767 atfork_parent ();
768} 980}
769 981
770#define dREQ \ 982/*****************************************************************************/
771 aio_req req; \ 983
772 \ 984static void
773 if (SvOK (callback) && !SvROK (callback)) \ 985ts_set (struct timespec *ts, NV value)
774 croak ("clalback must be undef or of reference type"); \ 986{
775 \ 987 ts->tv_sec = value;
776 Newz (0, req, 1, aio_cb); \ 988 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
777 if (!req) \ 989}
778 croak ("out of memory during aio_req allocation"); \ 990
779 \ 991static NV
780 req->callback = newSVsv (callback); 992ts_get (const struct timespec *ts)
781 993{
994 return ts->tv_sec + ts->tv_nsec * 1e-9;
995}
996
997/*****************************************************************************/
998
999XS(boot_IO__AIO) ecb_cold;
1000
782MODULE = IO::AIO PACKAGE = IO::AIO 1001MODULE = IO::AIO PACKAGE = IO::AIO
783 1002
784PROTOTYPES: ENABLE 1003PROTOTYPES: ENABLE
785 1004
786BOOT: 1005BOOT:
787{ 1006{
1007 static const struct {
1008 const char *name;
1009 IV iv;
1010 } *civ, const_iv[] = {
1011# define const_niv(name, value) { # name, (IV) value },
1012# define const_iv(name) { # name, (IV) name },
1013# define const_eio(name) { # name, (IV) EIO_ ## name },
1014
1015 /* you have to re-run ./gendef0 after adding/removing any constants here */
1016 /* the first block can be undef if missing */
1017 const_iv (ENOSYS)
1018 const_iv (EXDEV)
1019 const_iv (EBADR)
1020
1021 /* for lseek */
1022 const_iv (SEEK_DATA)
1023 const_iv (SEEK_HOLE)
1024
1025 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1026 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1027 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1028 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1029 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1030 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1031
1032 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1033 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1034 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1035 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1036 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1037
1038 /* the second block will be 0 when missing */
1039 const_iv (O_RDONLY)
1040 const_iv (O_WRONLY)
1041 const_iv (O_RDWR)
1042 const_iv (O_CREAT)
1043 const_iv (O_TRUNC)
1044 const_iv (O_EXCL)
1045 const_iv (O_APPEND)
1046
1047 const_iv (O_ASYNC)
1048 const_iv (O_DIRECT)
1049 const_iv (O_NOATIME)
1050
1051 const_iv (O_CLOEXEC)
1052 const_iv (O_NOCTTY)
1053 const_iv (O_NOFOLLOW)
1054 const_iv (O_NONBLOCK)
1055 const_iv (O_EXEC)
1056 const_iv (O_SEARCH)
1057 const_iv (O_DIRECTORY)
1058 const_iv (O_DSYNC)
1059 const_iv (O_RSYNC)
1060 const_iv (O_SYNC)
1061 const_iv (O_PATH)
1062 const_iv (O_TMPFILE)
1063 const_iv (O_TTY_INIT)
1064
1065 const_iv (S_IFIFO)
1066 const_iv (S_IFCHR)
1067 const_iv (S_IFBLK)
1068 const_iv (S_IFLNK)
1069 const_iv (S_IFREG)
1070 const_iv (S_IFDIR)
1071 const_iv (S_IFWHT)
1072 const_iv (S_IFSOCK)
1073 const_iv (S_IFMT)
1074
1075 const_iv (ST_RDONLY)
1076 const_iv (ST_NOSUID)
1077 const_iv (ST_NODEV)
1078 const_iv (ST_NOEXEC)
1079 const_iv (ST_SYNCHRONOUS)
1080 const_iv (ST_MANDLOCK)
1081 const_iv (ST_WRITE)
1082 const_iv (ST_APPEND)
1083 const_iv (ST_IMMUTABLE)
1084 const_iv (ST_NOATIME)
1085 const_iv (ST_NODIRATIME)
1086 const_iv (ST_RELATIME)
1087
1088 const_iv (PROT_NONE)
1089 const_iv (PROT_EXEC)
1090 const_iv (PROT_READ)
1091 const_iv (PROT_WRITE)
1092
1093 const_iv (MAP_PRIVATE)
1094 const_iv (MAP_SHARED)
1095 const_iv (MAP_FIXED)
1096 const_iv (MAP_ANONYMOUS)
1097
1098 /* linuxish */
1099 const_iv (MAP_LOCKED)
1100 const_iv (MAP_NORESERVE)
1101 const_iv (MAP_POPULATE)
1102 const_iv (MAP_NONBLOCK)
1103 const_iv (MAP_GROWSDOWN)
1104 const_iv (MAP_32BIT)
1105 const_iv (MAP_HUGETLB)
1106 const_iv (MAP_STACK)
1107
1108 const_iv (F_DUPFD_CLOEXEC)
1109
1110 const_iv (F_OFD_GETLK)
1111 const_iv (F_OFD_SETLK)
1112 const_iv (F_OFD_GETLKW)
1113
1114 const_iv (FIFREEZE)
1115 const_iv (FITHAW)
1116 const_iv (FITRIM)
1117 const_iv (FICLONE)
1118 const_iv (FICLONERANGE)
1119 const_iv (FIDEDUPERANGE)
1120
1121 const_iv (FS_IOC_GETFLAGS)
1122 const_iv (FS_IOC_SETFLAGS)
1123 const_iv (FS_IOC_GETVERSION)
1124 const_iv (FS_IOC_SETVERSION)
1125 const_iv (FS_IOC_FIEMAP)
1126 const_iv (FS_IOC_FSGETXATTR)
1127 const_iv (FS_IOC_FSSETXATTR)
1128 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1129 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1130 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1131
1132 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1133
1134 const_iv (FS_SECRM_FL)
1135 const_iv (FS_UNRM_FL)
1136 const_iv (FS_COMPR_FL)
1137 const_iv (FS_SYNC_FL)
1138 const_iv (FS_IMMUTABLE_FL)
1139 const_iv (FS_APPEND_FL)
1140 const_iv (FS_NODUMP_FL)
1141 const_iv (FS_NOATIME_FL)
1142 const_iv (FS_DIRTY_FL)
1143 const_iv (FS_COMPRBLK_FL)
1144 const_iv (FS_NOCOMP_FL)
1145 const_iv (FS_ENCRYPT_FL)
1146 const_iv (FS_BTREE_FL)
1147 const_iv (FS_INDEX_FL)
1148 const_iv (FS_JOURNAL_DATA_FL)
1149 const_iv (FS_NOTAIL_FL)
1150 const_iv (FS_DIRSYNC_FL)
1151 const_iv (FS_TOPDIR_FL)
1152 const_iv (FS_FL_USER_MODIFIABLE)
1153
1154 const_iv (FS_XFLAG_REALTIME)
1155 const_iv (FS_XFLAG_PREALLOC)
1156 const_iv (FS_XFLAG_IMMUTABLE)
1157 const_iv (FS_XFLAG_APPEND)
1158 const_iv (FS_XFLAG_SYNC)
1159 const_iv (FS_XFLAG_NOATIME)
1160 const_iv (FS_XFLAG_NODUMP)
1161 const_iv (FS_XFLAG_RTINHERIT)
1162 const_iv (FS_XFLAG_PROJINHERIT)
1163 const_iv (FS_XFLAG_NOSYMLINKS)
1164 const_iv (FS_XFLAG_EXTSIZE)
1165 const_iv (FS_XFLAG_EXTSZINHERIT)
1166 const_iv (FS_XFLAG_NODEFRAG)
1167 const_iv (FS_XFLAG_FILESTREAM)
1168 const_iv (FS_XFLAG_DAX)
1169 const_iv (FS_XFLAG_HASATTR)
1170
1171 const_iv (FIEMAP_FLAG_SYNC)
1172 const_iv (FIEMAP_FLAG_XATTR)
1173 const_iv (FIEMAP_FLAGS_COMPAT)
1174 const_iv (FIEMAP_EXTENT_LAST)
1175 const_iv (FIEMAP_EXTENT_UNKNOWN)
1176 const_iv (FIEMAP_EXTENT_DELALLOC)
1177 const_iv (FIEMAP_EXTENT_ENCODED)
1178 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1179 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1180 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1181 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1182 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1183 const_iv (FIEMAP_EXTENT_MERGED)
1184 const_iv (FIEMAP_EXTENT_SHARED)
1185
1186 const_iv (SPLICE_F_MOVE)
1187 const_iv (SPLICE_F_NONBLOCK)
1188 const_iv (SPLICE_F_MORE)
1189 const_iv (SPLICE_F_GIFT)
1190
1191 const_iv (EFD_CLOEXEC)
1192 const_iv (EFD_NONBLOCK)
1193 const_iv (EFD_SEMAPHORE)
1194
1195 const_iv (CLOCK_REALTIME)
1196 const_iv (CLOCK_MONOTONIC)
1197 const_iv (CLOCK_BOOTTIME)
1198 const_iv (CLOCK_REALTIME_ALARM)
1199 const_iv (CLOCK_BOOTTIME_ALARM)
1200
1201 const_iv (TFD_NONBLOCK)
1202 const_iv (TFD_CLOEXEC)
1203
1204 const_iv (TFD_TIMER_ABSTIME)
1205 const_iv (TFD_TIMER_CANCEL_ON_SET)
1206
1207 /* these are libeio constants, and are independent of gendef0 */
1208 const_eio (SEEK_SET)
1209 const_eio (SEEK_CUR)
1210 const_eio (SEEK_END)
1211
1212 const_eio (MCL_FUTURE)
1213 const_eio (MCL_CURRENT)
1214
1215 const_eio (MS_ASYNC)
1216 const_eio (MS_INVALIDATE)
1217 const_eio (MS_SYNC)
1218
1219 const_eio (MT_MODIFY)
1220
1221 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1222 const_eio (SYNC_FILE_RANGE_WRITE)
1223 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1224
1225 const_eio (FALLOC_FL_KEEP_SIZE)
1226 const_eio (FALLOC_FL_PUNCH_HOLE)
1227 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1228 const_eio (FALLOC_FL_ZERO_RANGE)
1229 const_eio (FALLOC_FL_INSERT_RANGE)
1230 const_eio (FALLOC_FL_UNSHARE_RANGE)
1231
1232 const_eio (RENAME_NOREPLACE)
1233 const_eio (RENAME_EXCHANGE)
1234 const_eio (RENAME_WHITEOUT)
1235
1236 const_eio (READDIR_DENTS)
1237 const_eio (READDIR_DIRS_FIRST)
1238 const_eio (READDIR_STAT_ORDER)
1239 const_eio (READDIR_FOUND_UNKNOWN)
1240
1241 const_eio (DT_UNKNOWN)
1242 const_eio (DT_FIFO)
1243 const_eio (DT_CHR)
1244 const_eio (DT_DIR)
1245 const_eio (DT_BLK)
1246 const_eio (DT_REG)
1247 const_eio (DT_LNK)
1248 const_eio (DT_SOCK)
1249 const_eio (DT_WHT)
1250 };
1251
788 HV *stash = gv_stashpv ("IO::AIO", 1); 1252 aio_stash = gv_stashpv ("IO::AIO" , 1);
789 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1253 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
790 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1254 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
791 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1255 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
792 1256
793 create_pipe (); 1257 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
794 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1258 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
795}
796 1259
1260 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1261
1262 reinit ();
1263}
1264
797void 1265void
798min_parallel (nthreads) 1266reinit ()
799 int nthreads 1267 PROTOTYPE:
1268
1269void
1270max_poll_reqs (unsigned int nreqs)
800 PROTOTYPE: $ 1271 PROTOTYPE: $
1272 CODE:
1273 eio_set_max_poll_reqs (nreqs);
801 1274
802void 1275void
803max_parallel (nthreads) 1276max_poll_time (double nseconds)
804 int nthreads
805 PROTOTYPE: $ 1277 PROTOTYPE: $
806
807int
808max_outstanding (nreqs)
809 int nreqs
810 PROTOTYPE: $
811 CODE: 1278 CODE:
812 RETVAL = max_outstanding; 1279 eio_set_max_poll_time (nseconds);
1280
1281void
1282min_parallel (unsigned int nthreads)
1283 PROTOTYPE: $
1284 CODE:
1285 eio_set_min_parallel (nthreads);
1286
1287void
1288max_parallel (unsigned int nthreads)
1289 PROTOTYPE: $
1290 CODE:
1291 eio_set_max_parallel (nthreads);
1292
1293void
1294max_idle (unsigned int nthreads)
1295 PROTOTYPE: $
1296 CODE:
1297 eio_set_max_idle (nthreads);
1298
1299void
1300idle_timeout (unsigned int seconds)
1301 PROTOTYPE: $
1302 CODE:
1303 eio_set_idle_timeout (seconds);
1304
1305void
1306max_outstanding (unsigned int maxreqs)
1307 PROTOTYPE: $
1308 CODE:
813 max_outstanding = nreqs; 1309 max_outstanding = maxreqs;
814 1310
815void 1311void
816aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1312aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
817 SV * pathname
818 int flags
819 int mode
820 SV * callback
821 PROTOTYPE: $$$;$
822 CODE: 1313 PPCODE:
823{ 1314{
824 dREQ; 1315 dREQ;
825 1316
1317 req->type = EIO_WD_OPEN;
1318 req_set_path1 (req, pathname);
1319
1320 REQ_SEND;
1321}
1322
1323void
1324aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1325 PPCODE:
1326{
1327 dREQ;
1328
826 req->type = REQ_OPEN; 1329 req->type = EIO_OPEN;
827 req->data = newSVsv (pathname); 1330 req_set_path1 (req, pathname);
828 req->dataptr = SvPVbyte_nolen (req->data);
829 req->fd = flags; 1331 req->int1 = flags;
830 req->mode = mode; 1332 req->int2 = mode;
831 1333
832 send_req (req); 1334 REQ_SEND;
833} 1335}
834 1336
835void 1337void
836aio_close (fh,callback=&PL_sv_undef) 1338aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
837 SV * fh
838 SV * callback
839 PROTOTYPE: $;$
840 ALIAS: 1339 ALIAS:
841 aio_close = REQ_CLOSE
842 aio_fsync = REQ_FSYNC 1340 aio_fsync = EIO_FSYNC
843 aio_fdatasync = REQ_FDATASYNC 1341 aio_fdatasync = EIO_FDATASYNC
1342 aio_syncfs = EIO_SYNCFS
844 CODE: 1343 PPCODE:
845{ 1344{
1345 int fd = s_fileno_croak (fh, 0);
846 dREQ; 1346 dREQ;
847 1347
848 req->type = ix; 1348 req->type = ix;
849 req->fh = newSVsv (fh); 1349 req->sv1 = newSVsv (fh);
850 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1350 req->int1 = fd;
851 1351
852 send_req (req); 1352 REQ_SEND;
853} 1353}
854 1354
855void 1355void
1356aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1357 PPCODE:
1358{
1359 int fd = s_fileno_croak (fh, 0);
1360 dREQ;
1361
1362 req->type = EIO_SYNC_FILE_RANGE;
1363 req->sv1 = newSVsv (fh);
1364 req->int1 = fd;
1365 req->offs = offset;
1366 req->size = nbytes;
1367 req->int2 = flags;
1368
1369 REQ_SEND;
1370}
1371
1372void
1373aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1374 PPCODE:
1375{
1376 int fd = s_fileno_croak (fh, 0);
1377 dREQ;
1378
1379 req->type = EIO_FALLOCATE;
1380 req->sv1 = newSVsv (fh);
1381 req->int1 = fd;
1382 req->int2 = mode;
1383 req->offs = offset;
1384 req->size = len;
1385
1386 REQ_SEND;
1387}
1388
1389void
1390aio_close (SV *fh, SV *callback = &PL_sv_undef)
1391 PPCODE:
1392{
1393 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1394 int fd = s_fileno_croak (fh, 0);
1395 dREQ;
1396
1397 if (expect_false (close_fd < 0))
1398 {
1399 int pipefd [2];
1400
1401 if (
1402#ifdef _WIN32
1403 _pipe (pipefd, 1, _O_BINARY) < 0
1404#else
1405 pipe (pipefd) < 0
1406 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1407#endif
1408 || close (pipefd [1]) < 0
1409 )
1410 abort (); /*D*/
1411
1412 close_fd = pipefd [0];
1413 }
1414
1415 req->type = EIO_DUP2;
1416 req->int1 = close_fd;
1417 req->sv2 = newSVsv (fh);
1418 req->int2 = fd;
1419
1420 REQ_SEND;
1421}
1422
1423void
1424aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1425 PPCODE:
1426{
1427 int fd = s_fileno_croak (fh, 0);
1428 dREQ;
1429
1430 req->type = EIO_SEEK;
1431 req->sv1 = newSVsv (fh);
1432 req->int1 = fd;
1433 req->offs = SvVAL64 (offset);
1434 req->int2 = whence;
1435
1436 REQ_SEND;
1437}
1438
1439void
856aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1440aio_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: 1441 ALIAS:
864 aio_read = REQ_READ 1442 aio_read = EIO_READ
865 aio_write = REQ_WRITE 1443 aio_write = EIO_WRITE
866 PROTOTYPE: $$$$$;$
867 CODE: 1444 PPCODE:
868{ 1445{
869 aio_req req;
870 STRLEN svlen; 1446 STRLEN svlen;
1447 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
871 char *svptr = SvPVbyte (data, svlen); 1448 char *svptr = SvPVbyte (data, svlen);
872 1449 UV len = SvUV (length);
873 SvUPGRADE (data, SVt_PV);
874 SvPOK_on (data);
875 1450
876 if (dataoffset < 0) 1451 if (dataoffset < 0)
877 dataoffset += svlen; 1452 dataoffset += svlen;
878 1453
879 if (dataoffset < 0 || dataoffset > svlen) 1454 if (dataoffset < 0 || dataoffset > svlen)
880 croak ("data offset outside of string"); 1455 croak ("dataoffset outside of data scalar");
881 1456
882 if (ix == REQ_WRITE) 1457 if (ix == EIO_WRITE)
883 { 1458 {
884 /* write: check length and adjust. */ 1459 /* write: check length and adjust. */
885 if (length < 0 || length + dataoffset > svlen) 1460 if (!SvOK (length) || len + dataoffset > svlen)
886 length = svlen - dataoffset; 1461 len = svlen - dataoffset;
887 } 1462 }
888 else 1463 else
889 { 1464 {
890 /* read: grow scalar as necessary */ 1465 /* read: check type and grow scalar as necessary */
1466 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
891 svptr = SvGROW (data, length + dataoffset); 1467 svptr = sv_grow (data, len + dataoffset + 1);
1468 else if (SvCUR (data) < len + dataoffset)
1469 croak ("length + dataoffset outside of scalar, and cannot grow");
892 } 1470 }
893
894 if (length < 0)
895 croak ("length must not be negative");
896 1471
897 { 1472 {
898 dREQ; 1473 dREQ;
899 1474
900 req->type = ix; 1475 req->type = ix;
901 req->fh = newSVsv (fh); 1476 req->sv1 = newSVsv (fh);
902 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1477 req->int1 = fd;
903 : IoOFP (sv_2io (fh))); 1478 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904 req->offset = offset; 1479 req->size = len;
905 req->length = length;
906 req->data = SvREFCNT_inc (data); 1480 req->sv2 = SvREFCNT_inc (data);
907 req->dataptr = (char *)svptr + dataoffset; 1481 req->ptr2 = (char *)svptr + dataoffset;
1482 req->stroffset = dataoffset;
908 1483
909 if (!SvREADONLY (data)) 1484 if (!SvREADONLY (data))
910 { 1485 {
911 SvREADONLY_on (data); 1486 SvREADONLY_on (data);
912 req->data2ptr = (void *)data; 1487 req->flags |= FLAG_SV2_RO_OFF;
913 } 1488 }
914 1489
915 send_req (req); 1490 REQ_SEND;
916 } 1491 }
917} 1492}
918 1493
919void 1494void
920aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1495aio_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: 1496 ALIAS:
967 aio_stat = REQ_STAT 1497 aio_ioctl = EIO_IOCTL
968 aio_lstat = REQ_LSTAT 1498 aio_fcntl = EIO_FCNTL
969 CODE: 1499 PPCODE:
970{ 1500{
971 dREQ; 1501 int fd = s_fileno_croak (fh, 0);
1502 char *svptr;
972 1503
973 New (0, req->statdata, 1, Stat_t); 1504 if (SvPOK (arg) || !SvNIOK (arg))
974 if (!req->statdata)
975 { 1505 {
976 free_req (req); 1506 STRLEN svlen;
977 croak ("out of memory during aio_req->statdata allocation"); 1507 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
978 } 1508#ifdef IOCPARM_LEN
1509 STRLEN need = IOCPARM_LEN (request);
1510#else
1511 STRLEN need = 256;
1512#endif
979 1513
980 if (SvPOK (fh_or_path)) 1514 if (svlen < need)
981 { 1515 svptr = SvGROW (arg, need);
982 req->type = ix;
983 req->data = newSVsv (fh_or_path);
984 req->dataptr = SvPVbyte_nolen (req->data);
985 } 1516 }
986 else 1517 else
1518 svptr = (char *)SvIV (arg);
1519
987 { 1520 {
1521 dREQ;
1522
988 req->type = REQ_FSTAT; 1523 req->type = ix;
989 req->fh = newSVsv (fh_or_path); 1524 req->sv1 = newSVsv (fh);
990 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1525 req->int1 = fd;
1526 req->int2 = (long)request;
1527 req->sv2 = SvREFCNT_inc (arg);
1528 req->ptr2 = svptr;
1529
1530 REQ_SEND;
991 } 1531 }
992
993 send_req (req);
994} 1532}
995 1533
996void 1534void
997aio_unlink (pathname,callback=&PL_sv_undef) 1535aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
998 SV * pathname
999 SV * callback
1000 ALIAS: 1536 ALIAS:
1001 aio_unlink = REQ_UNLINK
1002 aio_rmdir = REQ_RMDIR
1003 aio_readdir = REQ_READDIR 1537 aio_readlink = EIO_READLINK
1538 aio_realpath = EIO_REALPATH
1539 PPCODE:
1540{
1541 dREQ;
1542
1543 req->type = ix;
1544 req_set_path1 (req, pathname);
1545
1546 REQ_SEND;
1547}
1548
1549void
1550aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1551 PPCODE:
1552{
1553 int ifd = s_fileno_croak (in_fh , 0);
1554 int ofd = s_fileno_croak (out_fh, 1);
1555 dREQ;
1556
1557 req->type = EIO_SENDFILE;
1558 req->sv1 = newSVsv (out_fh);
1559 req->int1 = ofd;
1560 req->sv2 = newSVsv (in_fh);
1561 req->int2 = ifd;
1562 req->offs = in_offset;
1563 req->size = length;
1564
1565 REQ_SEND;
1566}
1567
1568void
1569aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1570 PPCODE:
1571{
1572 int fd = s_fileno_croak (fh, 0);
1573 dREQ;
1574
1575 req->type = EIO_READAHEAD;
1576 req->sv1 = newSVsv (fh);
1577 req->int1 = fd;
1578 req->offs = offset;
1579 req->size = length;
1580
1581 REQ_SEND;
1582}
1583
1584void
1585aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1586 ALIAS:
1587 aio_stat = EIO_STAT
1588 aio_lstat = EIO_LSTAT
1589 aio_statvfs = EIO_STATVFS
1590 PPCODE:
1591{
1592 dREQ;
1593
1594 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1595
1596 REQ_SEND;
1597}
1598
1599UV
1600major (UV dev)
1601 ALIAS:
1602 minor = 1
1004 CODE: 1603 CODE:
1604 RETVAL = ix ? minor (dev) : major (dev);
1605 OUTPUT:
1606 RETVAL
1607
1608UV
1609makedev (UV maj, UV min)
1610 CODE:
1611 RETVAL = makedev (maj, min);
1612 OUTPUT:
1613 RETVAL
1614
1615void
1616aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1617 PPCODE:
1618{
1619 dREQ;
1620
1621 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1622 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1623 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1624
1625 REQ_SEND;
1626}
1627
1628void
1629aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1630 PPCODE:
1631{
1632 dREQ;
1633
1634 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1635 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1636
1637 REQ_SEND;
1638}
1639
1640void
1641aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1642 PPCODE:
1643{
1644 dREQ;
1645
1646 req->int2 = mode;
1647 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1648
1649 REQ_SEND;
1650}
1651
1652void
1653aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1654 PPCODE:
1655{
1656 dREQ;
1657
1658 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1659 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1660 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1661
1662 REQ_SEND;
1663}
1664
1665void
1666aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1667 PPCODE:
1668{
1669 dREQ;
1670
1671 req->type = EIO_READDIR;
1672 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1673
1674 if (flags & EIO_READDIR_DENTS)
1675 req->int1 |= EIO_READDIR_CUSTOM2;
1676
1677 req_set_path1 (req, pathname);
1678
1679 REQ_SEND;
1680}
1681
1682void
1683aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1684 PPCODE:
1685{
1686 dREQ;
1687
1688 req->type = EIO_MKDIR;
1689 req->int2 = mode;
1690 req_set_path1 (req, pathname);
1691
1692 REQ_SEND;
1693}
1694
1695void
1696aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1697 ALIAS:
1698 aio_unlink = EIO_UNLINK
1699 aio_rmdir = EIO_RMDIR
1700 aio_readdir = EIO_READDIR
1701 PPCODE:
1005{ 1702{
1006 dREQ; 1703 dREQ;
1007 1704
1008 req->type = ix; 1705 req->type = ix;
1009 req->data = newSVsv (pathname); 1706 req_set_path1 (req, pathname);
1010 req->dataptr = SvPVbyte_nolen (req->data);
1011
1012 send_req (req);
1013}
1014 1707
1708 REQ_SEND;
1709}
1710
1015void 1711void
1016aio_link (oldpath,newpath,callback=&PL_sv_undef) 1712aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1017 SV * oldpath
1018 SV * newpath
1019 SV * callback
1020 ALIAS: 1713 ALIAS:
1021 aio_link = REQ_LINK 1714 aio_link = EIO_LINK
1022 aio_symlink = REQ_SYMLINK 1715 aio_symlink = EIO_SYMLINK
1023 aio_rename = REQ_RENAME 1716 aio_rename = EIO_RENAME
1024 CODE: 1717 PPCODE:
1025{ 1718{
1719 eio_wd wd2 = 0;
1026 dREQ; 1720 dREQ;
1027 1721
1028 req->type = ix; 1722 req->type = ix;
1029 req->fh = newSVsv (oldpath); 1723 req_set_path1 (req, oldpath);
1030 req->data2ptr = SvPVbyte_nolen (req->fh); 1724 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1031 req->data = newSVsv (newpath); 1725 req->int3 = (long)wd2;
1032 req->dataptr = SvPVbyte_nolen (req->data);
1033 1726
1034 send_req (req); 1727 REQ_SEND;
1035} 1728}
1036 1729
1037#if 0
1038
1039# undocumented, because it does not cancel active requests
1040void 1730void
1041cancel_most_requests () 1731aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1042 PROTOTYPE: 1732 PPCODE:
1733{
1734 eio_wd wd2 = 0;
1735 dREQ;
1736
1737 req->type = EIO_RENAME;
1738 req_set_path1 (req, oldpath);
1739 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1740 req->int2 = flags;
1741 req->int3 = (long)wd2;
1742
1743 REQ_SEND;
1744}
1745
1746void
1747aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1748 PPCODE:
1749{
1750 dREQ;
1751
1752 req->type = EIO_MKNOD;
1753 req->int2 = (mode_t)mode;
1754 req->offs = dev;
1755 req_set_path1 (req, pathname);
1756
1757 REQ_SEND;
1758}
1759
1760void
1761aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1762 ALIAS:
1763 aio_mtouch = EIO_MTOUCH
1764 aio_msync = EIO_MSYNC
1043 CODE: 1765 PPCODE:
1044{ 1766{
1045 aio_req *req; 1767 STRLEN svlen;
1768 char *svptr = SvPVbyte (data, svlen);
1769 UV len = SvUV (length);
1046 1770
1047 pthread_mutex_lock (&reqlock); 1771 if (flags < 0)
1048 for (req = reqs; req; req = req->next) 1772 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1773
1774 if (offset < 0)
1775 offset += svlen;
1776
1777 if (offset < 0 || offset > svlen)
1778 croak ("offset outside of scalar");
1779
1780 if (!SvOK (length) || len + offset > svlen)
1781 len = svlen - offset;
1782
1783 {
1784 dREQ;
1785
1786 req->type = ix;
1787 req->sv2 = SvREFCNT_inc (data);
1788 req->ptr2 = (char *)svptr + offset;
1789 req->size = len;
1790 req->int1 = flags;
1791
1792 REQ_SEND;
1793 }
1794}
1795
1796void
1797aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1798 PPCODE:
1799{
1800 STRLEN svlen;
1801 char *svptr = SvPVbyte (data, svlen);
1802 UV len = SvUV (length);
1803
1804 if (offset < 0)
1805 offset += svlen;
1806
1807 if (offset < 0 || offset > svlen)
1808 croak ("offset outside of scalar");
1809
1810 if (!SvOK (length) || len + offset > svlen)
1811 len = svlen - offset;
1812
1813 {
1814 dREQ;
1815
1816 req->type = EIO_MLOCK;
1817 req->sv2 = SvREFCNT_inc (data);
1818 req->ptr2 = (char *)svptr + offset;
1819 req->size = len;
1820
1821 REQ_SEND;
1822 }
1823}
1824
1825void
1826aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1827 PPCODE:
1828{
1829 dREQ;
1830
1831 req->type = EIO_MLOCKALL;
1832 req->int1 = flags;
1833
1834 REQ_SEND;
1835}
1836
1837void
1838aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1839 PPCODE:
1840{
1841 int fd = s_fileno_croak (fh, 0);
1842 dREQ;
1843
1844 req->type = EIO_CUSTOM;
1845 req->sv1 = newSVsv (fh);
1846 req->int1 = fd;
1847
1848 req->feed = fiemap;
1849#if HAVE_FIEMAP
1850 /* keep our fingers crossed that the next two types are 64 bit */
1851 req->offs = start;
1852 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1853 req->int2 = flags;
1854 req->int3 = SvOK (count) ? SvIV (count) : -1;
1855#endif
1856
1857 REQ_SEND;
1858}
1859
1860void
1861aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1862 PPCODE:
1863{
1864 char *svptr = 0;
1865
1866 sv_clear_foreign (data);
1867
1868 if (length) /* known length, directly read into scalar */
1869 {
1870 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1871 svptr = sv_grow (data, length + 1);
1872 else if (SvCUR (data) < length)
1873 croak ("length outside of scalar, and cannot grow");
1874 else
1875 svptr = SvPVbyte_nolen (data);
1876 }
1877
1878 {
1879 dREQ;
1880
1881 req->type = EIO_SLURP;
1882 req_set_path1 (req, pathname);
1883 req->offs = offset;
1884 req->size = length;
1885 req->sv2 = SvREFCNT_inc (data);
1886 req->ptr2 = svptr;
1887
1888 if (!SvREADONLY (data))
1889 {
1890 SvREADONLY_on (data);
1049 req->flags |= 1; 1891 req->flags |= FLAG_SV2_RO_OFF;
1050 pthread_mutex_unlock (&reqlock); 1892 }
1051 1893
1052 pthread_mutex_lock (&reslock); 1894 REQ_SEND;
1053 for (req = ress; req; req = req->next) 1895 }
1054 req->flags |= 1;
1055 pthread_mutex_unlock (&reslock);
1056} 1896}
1057 1897
1058#endif 1898void
1899aio_busy (double delay, SV *callback = &PL_sv_undef)
1900 PPCODE:
1901{
1902 dREQ;
1903
1904 req->type = EIO_BUSY;
1905 req->nv1 = delay < 0. ? 0. : delay;
1906
1907 REQ_SEND;
1908}
1909
1910void
1911aio_group (SV *callback = &PL_sv_undef)
1912 PPCODE:
1913{
1914 dREQ;
1915
1916 req->type = EIO_GROUP;
1917
1918 PUTBACK;
1919 req_submit (req);
1920 SPAGAIN;
1921
1922 XPUSHs (req_sv (req, aio_grp_stash));
1923}
1924
1925void
1926aio_nop (SV *callback = &PL_sv_undef)
1927 ALIAS:
1928 aio_nop = EIO_NOP
1929 aio_sync = EIO_SYNC
1930 PPCODE:
1931{
1932 dREQ;
1933
1934 req->type = ix;
1935
1936 REQ_SEND;
1937}
1938
1939int
1940aioreq_pri (int pri = NO_INIT)
1941 CODE:
1942 RETVAL = next_pri;
1943 if (items > 0)
1944 {
1945 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1946 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1947 next_pri = pri;
1948 }
1949 OUTPUT:
1950 RETVAL
1951
1952void
1953aioreq_nice (int nice = 0)
1954 CODE:
1955 nice = next_pri - nice;
1956 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1957 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1958 next_pri = nice;
1059 1959
1060void 1960void
1061flush () 1961flush ()
1062 PROTOTYPE:
1063 CODE: 1962 CODE:
1064 while (nreqs) 1963 while (eio_nreqs ())
1065 { 1964 {
1066 poll_wait (); 1965 poll_wait ();
1067 poll_cb (); 1966 poll_cb ();
1068 } 1967 }
1069 1968
1070void 1969int
1071poll() 1970poll ()
1072 PROTOTYPE:
1073 CODE: 1971 CODE:
1074 if (nreqs)
1075 {
1076 poll_wait (); 1972 poll_wait ();
1077 poll_cb (); 1973 RETVAL = poll_cb ();
1078 }
1079
1080int
1081poll_fileno()
1082 PROTOTYPE:
1083 CODE:
1084 RETVAL = respipe [0];
1085 OUTPUT: 1974 OUTPUT:
1086 RETVAL 1975 RETVAL
1087 1976
1088int 1977int
1978poll_fileno ()
1979 CODE:
1980 RETVAL = s_epipe_fd (&respipe);
1981 OUTPUT:
1982 RETVAL
1983
1984int
1089poll_cb(...) 1985poll_cb (...)
1090 PROTOTYPE: 1986 PROTOTYPE:
1091 CODE: 1987 CODE:
1092 RETVAL = poll_cb (); 1988 RETVAL = poll_cb ();
1093 OUTPUT: 1989 OUTPUT:
1094 RETVAL 1990 RETVAL
1095 1991
1096void 1992void
1097poll_wait() 1993poll_wait ()
1098 PROTOTYPE:
1099 CODE: 1994 CODE:
1100 if (nreqs)
1101 poll_wait (); 1995 poll_wait ();
1102 1996
1103int 1997int
1104nreqs() 1998nreqs ()
1105 PROTOTYPE:
1106 CODE: 1999 CODE:
1107 RETVAL = nreqs; 2000 RETVAL = eio_nreqs ();
1108 OUTPUT: 2001 OUTPUT:
1109 RETVAL 2002 RETVAL
1110 2003
2004int
2005nready ()
2006 CODE:
2007 RETVAL = eio_nready ();
2008 OUTPUT:
2009 RETVAL
2010
2011int
2012npending ()
2013 CODE:
2014 RETVAL = eio_npending ();
2015 OUTPUT:
2016 RETVAL
2017
2018int
2019nthreads ()
2020 CODE:
2021 RETVAL = eio_nthreads ();
2022 OUTPUT:
2023 RETVAL
2024
2025int
2026fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2027 CODE:
2028 RETVAL = posix_fadvise (fh, offset, length, advice);
2029 OUTPUT:
2030 RETVAL
2031
2032IV
2033sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2034 CODE:
2035 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2036 OUTPUT:
2037 RETVAL
2038
2039void
2040mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2041 PPCODE:
2042 sv_clear_foreign (scalar);
2043{
2044 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2045 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2046 if (addr == (void *)-1)
2047 XSRETURN_NO;
2048
2049 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2050
2051 if (!(prot & PROT_WRITE))
2052 SvREADONLY_on (scalar);
2053
2054 XSRETURN_YES;
2055}
2056
2057void
2058munmap (SV *scalar)
2059 CODE:
2060 sv_clear_foreign (scalar);
2061
2062int
2063madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2064 ALIAS:
2065 mprotect = 1
2066 CODE:
2067{
2068 STRLEN svlen;
2069 void *addr = SvPVbyte (scalar, svlen);
2070 STRLEN len = SvUV (length);
2071
2072 if (offset < 0)
2073 offset += svlen;
2074
2075 if (offset < 0 || offset > svlen)
2076 croak ("offset outside of scalar");
2077
2078 if (!SvOK (length) || len + offset > svlen)
2079 len = svlen - offset;
2080
2081 addr = (void *)(((intptr_t)addr) + offset);
2082 eio_page_align (&addr, &len);
2083
2084 switch (ix)
2085 {
2086 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2087 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2088 }
2089}
2090 OUTPUT:
2091 RETVAL
2092
2093int
2094munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2095 CODE:
2096{
2097 STRLEN svlen;
2098 void *addr = SvPVbyte (scalar, svlen);
2099 size_t len = SvUV (length);
2100
2101 if (offset < 0)
2102 offset += svlen;
2103
2104 if (offset < 0 || offset > svlen)
2105 croak ("offset outside of scalar");
2106
2107 if (!SvOK (length) || len + offset > svlen)
2108 len = svlen - offset;
2109
2110 addr = (void *)(((intptr_t)addr) + offset);
2111 eio_page_align (&addr, &len);
2112#if _POSIX_MEMLOCK_RANGE
2113 RETVAL = munlock (addr, len);
2114#else
2115 RETVAL = EIO_ENOSYS ();
2116#endif
2117}
2118 OUTPUT:
2119 RETVAL
2120
2121int
2122munlockall ()
2123 CODE:
2124#if _POSIX_MEMLOCK
2125 munlockall ();
2126#else
2127 RETVAL = EIO_ENOSYS ();
2128#endif
2129 OUTPUT:
2130 RETVAL
2131
2132int
2133splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2134 CODE:
2135{
2136#if HAVE_LINUX_SPLICE
2137 loff_t off_in_, off_out_;
2138 RETVAL = splice (
2139 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2140 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2141 length, flags
2142 );
2143#else
2144 RETVAL = EIO_ENOSYS ();
2145#endif
2146}
2147 OUTPUT:
2148 RETVAL
2149
2150int
2151tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2152 CODE:
2153#if HAVE_LINUX_SPLICE
2154 RETVAL = tee (rfh, wfh, length, flags);
2155#else
2156 RETVAL = EIO_ENOSYS ();
2157#endif
2158 OUTPUT:
2159 RETVAL
2160
2161int
2162pipesize (aio_rfd rfh, int new_size = -1)
2163 PROTOTYPE: $;$
2164 CODE:
2165#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2166 if (new_size >= 0)
2167 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2168 else
2169 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2170#else
2171 errno = ENOSYS;
2172 RETVAL = -1;
2173#endif
2174 OUTPUT:
2175 RETVAL
2176
2177void
2178pipe2 (int flags = 0)
2179 PROTOTYPE: ;$
2180 PPCODE:
2181{
2182 int fd[2];
2183 int res;
2184
2185 if (flags)
2186#if HAVE_PIPE2
2187 res = pipe2 (fd, flags);
2188#else
2189 res = (errno = ENOSYS, -1);
2190#endif
2191 else
2192 res = pipe (fd);
2193
2194 if (!res)
2195 {
2196 EXTEND (SP, 2);
2197 PUSHs (newmortalFH (fd[0], O_RDONLY));
2198 PUSHs (newmortalFH (fd[1], O_WRONLY));
2199 }
2200}
2201
2202void
2203eventfd (unsigned int initval = 0, int flags = 0)
2204 PPCODE:
2205{
2206 int fd;
2207#if HAVE_EVENTFD
2208 fd = eventfd (initval, flags);
2209#else
2210 fd = (errno = ENOSYS, -1);
2211#endif
2212
2213 XPUSHs (newmortalFH (fd, O_RDWR));
2214}
2215
2216void
2217timerfd_create (int clockid, int flags = 0)
2218 PPCODE:
2219{
2220 int fd;
2221#if HAVE_TIMERFD
2222 fd = timerfd_create (clockid, flags);
2223#else
2224 fd = (errno = ENOSYS, -1);
2225#endif
2226
2227 XPUSHs (newmortalFH (fd, O_RDWR));
2228}
2229
2230void
2231timerfd_settime (SV *fh, int flags, NV interval, NV value)
2232 PPCODE:
2233{
2234 int fd = s_fileno_croak (fh, 0);
2235#if HAVE_TIMERFD
2236 int res;
2237 struct itimerspec its, ots;
2238
2239 ts_set (&its.it_interval, interval);
2240 ts_set (&its.it_value , value);
2241 res = timerfd_settime (fd, flags, &its, &ots);
2242
2243 if (!res)
2244 {
2245 EXTEND (SP, 2);
2246 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2247 PUSHs (newSVnv (ts_get (&ots.it_value)));
2248 }
2249#else
2250 errno = ENOSYS;
2251#endif
2252}
2253
2254void
2255timerfd_gettime (SV *fh)
2256 PPCODE:
2257{
2258 int fd = s_fileno_croak (fh, 0);
2259#if HAVE_TIMERFD
2260 int res;
2261 struct itimerspec ots;
2262 res = timerfd_gettime (fd, &ots);
2263
2264 if (!res)
2265 {
2266 EXTEND (SP, 2);
2267 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2268 PUSHs (newSVnv (ts_get (&ots.it_value)));
2269 }
2270#else
2271 errno = ENOSYS;
2272#endif
2273}
2274
2275UV
2276get_fdlimit ()
2277 CODE:
2278#if HAVE_RLIMITS
2279 struct rlimit rl;
2280 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2281 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2282#endif
2283 XSRETURN_UNDEF;
2284 OUTPUT:
2285 RETVAL
2286
2287void
2288min_fdlimit (UV limit = 0x7fffffffU)
2289 CODE:
2290{
2291#if HAVE_RLIMITS
2292 struct rlimit rl;
2293 rlim_t orig_rlim_max;
2294 UV bit;
2295
2296 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2297 goto fail;
2298
2299 if (rl.rlim_cur == RLIM_INFINITY)
2300 XSRETURN_YES;
2301
2302 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2303
2304 if (rl.rlim_cur < limit)
2305 {
2306 rl.rlim_cur = limit;
2307
2308 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2309 rl.rlim_max = rl.rlim_cur;
2310 }
2311
2312 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2313 XSRETURN_YES;
2314
2315 if (errno == EPERM)
2316 {
2317 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2318 /* our limit overflows a system-wide limit */
2319 /* try an adaptive algorithm, but do not lower the hardlimit */
2320 rl.rlim_max = 0;
2321 for (bit = 0x40000000U; bit; bit >>= 1)
2322 {
2323 rl.rlim_max |= bit;
2324 rl.rlim_cur = rl.rlim_max;
2325
2326 /* nevr decrease the hard limit */
2327 if (rl.rlim_max < orig_rlim_max)
2328 break;
2329
2330 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2331 rl.rlim_max &= ~bit; /* too high, remove bit again */
2332 }
2333
2334 /* now, raise the soft limit to the max permitted */
2335 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2336 {
2337 rl.rlim_cur = rl.rlim_max;
2338 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2339 errno = EPERM;
2340 }
2341 }
2342#endif
2343 fail:
2344 XSRETURN_UNDEF;
2345}
2346
2347void _on_next_submit (SV *cb)
2348 CODE:
2349 SvREFCNT_dec (on_next_submit);
2350 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2351
2352PROTOTYPES: DISABLE
2353
2354MODULE = IO::AIO PACKAGE = IO::AIO::WD
2355
2356BOOT:
2357{
2358 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2359 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2360}
2361
2362void
2363DESTROY (SV *self)
2364 CODE:
2365{
2366 aio_wd wd = SvAIO_WD (self);
2367#if HAVE_AT
2368 {
2369 SV *callback = &PL_sv_undef;
2370 dREQ; /* clobbers next_pri :/ */
2371 next_pri = req->pri; /* restore next_pri */
2372 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2373 req->type = EIO_WD_CLOSE;
2374 req->wd = wd;
2375 REQ_SEND;
2376 }
2377#else
2378 eio_wd_close_sync (wd);
2379#endif
2380}
2381
2382MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2383
2384void
2385cancel (aio_req_ornot req)
2386 CODE:
2387 eio_cancel (req);
2388
2389void
2390cb (aio_req_ornot req, SV *callback = NO_INIT)
2391 PPCODE:
2392{
2393 if (GIMME_V != G_VOID)
2394 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2395
2396 if (items > 1)
2397 {
2398 SV *cb_cv = get_cb (callback);
2399
2400 SvREFCNT_dec (req->callback);
2401 req->callback = SvREFCNT_inc (cb_cv);
2402 }
2403}
2404
2405MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2406
2407void
2408add (aio_req grp, ...)
2409 PPCODE:
2410{
2411 int i;
2412
2413 if (grp->int1 == 2)
2414 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2415
2416 for (i = 1; i < items; ++i )
2417 {
2418 aio_req req;
2419
2420 if (GIMME_V != G_VOID)
2421 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2422
2423 req = SvAIO_REQ (ST (i));
2424
2425 if (req)
2426 eio_grp_add (grp, req);
2427 }
2428}
2429
2430void
2431cancel_subs (aio_req_ornot req)
2432 CODE:
2433 req_cancel_subs (req);
2434
2435void
2436result (aio_req grp, ...)
2437 CODE:
2438{
2439 int i;
2440 AV *av;
2441
2442 grp->errorno = errno;
2443
2444 av = newAV ();
2445 av_extend (av, items - 1);
2446
2447 for (i = 1; i < items; ++i )
2448 av_push (av, newSVsv (ST (i)));
2449
2450 SvREFCNT_dec (grp->sv1);
2451 grp->sv1 = (SV *)av;
2452}
2453
2454void
2455errno (aio_req grp, int errorno = errno)
2456 CODE:
2457 grp->errorno = errorno;
2458
2459void
2460limit (aio_req grp, int limit)
2461 CODE:
2462 eio_grp_limit (grp, limit);
2463
2464void
2465feed (aio_req grp, SV *callback = &PL_sv_undef)
2466 CODE:
2467{
2468 SvREFCNT_dec (grp->sv2);
2469 grp->sv2 = newSVsv (callback);
2470 grp->feed = aio_grp_feed;
2471
2472 if (grp->int2 <= 0)
2473 grp->int2 = 2;
2474
2475 eio_grp_limit (grp, grp->int2);
2476}
2477

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