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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.12 by root, Wed Jul 20 21:57:04 2005 UTC vs.
Revision 1.251 by root, Sat Jan 6 01:04:42 2018 UTC

1#define _XOPEN_SOURCE 500 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
7#include <sys/types.h> 14#include <sys/types.h>
8#include <sys/stat.h> 15#include <sys/stat.h>
9
10#include <unistd.h> 16#include <limits.h>
11#include <fcntl.h> 17#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 18#include <sched.h>
14#if __linux 19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
15#include <sys/syscall.h> 21# include <sys/mman.h>
22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
16#endif 35# endif
36#endif
17 37
18#include <pthread.h> 38/* perl namespace pollution */
39#undef VERSION
19 40
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 41/* perl stupidly overrides readdir and maybe others */
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 42/* with thread-unsafe versions, imagine that :( */
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 43#undef readdir
44#undef opendir
45#undef closedir
23 46
24#if __ia64 47#ifdef _WIN32
25# define STACKSIZE 65536 48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
26#else 84#else
27# define STACKSIZE 4096 85
86 #include <sys/time.h>
87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
151# else
152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 153# endif
154#endif
155
156/* defines all sorts of constants to 0 unless they are already defined */
157/* also provides const_iv_ and const_niv_ macros for them */
158#include "def0.h"
159
160#ifndef makedev
161# define makedev(maj,min) (((maj) << 8) | (min))
162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
169
170#if PAGESIZE <= 0
171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
173
174/*****************************************************************************/
175
176#if !_POSIX_MAPPED_FILES
177# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
178# define munmap(addr,length) EIO_ENOSYS ()
179#endif
180
181#if !_POSIX_MEMORY_PROTECTION
182# define mprotect(addr,len,prot) EIO_ENOSYS ()
183#endif
184
185#define FOREIGN_MAGIC PERL_MAGIC_ext
186
187static int ecb_cold
188mmap_free (pTHX_ SV *sv, MAGIC *mg)
189{
190 int old_errno = errno;
191 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
192 errno = old_errno;
193
194 mg->mg_obj = 0; /* just in case */
195
196 SvREADONLY_off (sv);
197
198 if (SvPVX (sv) != mg->mg_ptr)
199 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
200
201 SvCUR_set (sv, 0);
202 SvPVX (sv) = 0;
203 SvOK_off (sv);
204
205 return 0;
206}
207
208static MGVTBL mmap_vtbl = {
209 0, 0, 0, 0, mmap_free
210};
211
212static int ecb_cold
213sysfree_free (pTHX_ SV *sv, MAGIC *mg)
214{
215 free (mg->mg_ptr);
216 mg->mg_obj = 0; /* just in case */
217
218 SvREADONLY_off (sv);
219
220 if (SvPVX (sv) != mg->mg_ptr)
221 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
222
223 SvCUR_set (sv, 0);
224 SvPVX (sv) = 0;
225 SvOK_off (sv);
226
227 return 0;
228}
229
230static MGVTBL sysfree_vtbl = {
231 0, 0, 0, 0, sysfree_free
232};
233
234/*****************************************************************************/
235
236/* helper: set scalar to foreign ptr with custom free */
237static void
238sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
239{
240 sv_force_normal (sv);
241
242 /* we store the length in mg_obj, as namlen is I32 :/ */
243 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
244 ->mg_obj = (SV *)length;
245
246 SvUPGRADE (sv, SVt_PV); /* nop... */
247
248 if (SvLEN (sv))
249 Safefree (SvPVX (sv));
250
251 SvPVX (sv) = (char *)addr;
252 SvCUR_set (sv, length);
253 SvLEN_set (sv, 0);
254 SvPOK_only (sv);
255}
256
257static void
258sv_clear_foreign (SV *sv)
259{
260 /* todo: iterate over magic and only free ours, but of course */
261 /* the perl5porters will call that (correct) behaviour buggy */
262 sv_unmagic (sv, FOREIGN_MAGIC);
263}
264
265/*****************************************************************************/
266
267static void
268fiemap (eio_req *req)
269{
270 req->result = -1;
271
272#if HAVE_FIEMAP
273 /* assume some c99 */
274 struct fiemap *fiemap = 0;
275 size_t end_offset;
276 int count = req->int3;
277
278 req->flags |= EIO_FLAG_PTR1_FREE;
279
280 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
281 /* increase in 3.5kb steps */
282 if (count < 0)
283 count = 8;
284
285 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
286 errno = ENOMEM;
287 if (!fiemap)
288 return;
289
290 req->ptr1 = fiemap;
291
292 fiemap->fm_start = req->offs;
293 fiemap->fm_length = req->size;
294 fiemap->fm_flags = req->int2;
295 fiemap->fm_extent_count = count;
296
297 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
298 return;
299
300 if (req->int3 >= 0 /* not autosizing */
301 || !fiemap->fm_mapped_extents /* no more extents */
302 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
303 goto done;
304
305 /* else we have to loop -
306 * it would be tempting (actually I tried that first) to just query the
307 * number of extents needed, but linux often feels like not returning all
308 * extents, without telling us it left any out. this complicates
309 * this quite a bit.
310 */
311
312 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
313
314 for (;;)
315 {
316 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
317 char scratch[3072];
318 struct fiemap *incmap = (struct fiemap *)scratch;
319
320 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
321 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
322 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
323 incmap->fm_flags = fiemap->fm_flags;
324 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
325
326 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
327 return;
328
329 if (!incmap->fm_mapped_extents)
330 goto done;
331
332 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
333 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
334 errno = ENOMEM;
335 if (!fiemap)
336 return;
337
338 req->ptr1 = fiemap;
339
340 for (count = 0; count < incmap->fm_mapped_extents; ++count)
341 {
342 struct fiemap_extent *e = incmap->fm_extents + count;
343
344 if (e->fe_logical + e->fe_length >= end_offset)
345 goto done;
346
347 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
348
349 if (e->fe_flags & FIEMAP_EXTENT_LAST)
350 goto done;
351
352 }
353 }
354
355done:
356 req->result = 0;
357
358#else
359 errno = ENOSYS;
360#endif
361}
362
363/*****************************************************************************/
29 364
30enum { 365enum {
31 REQ_QUIT, 366 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 367};
37 368
38typedef struct aio_cb {
39 struct aio_cb *volatile next;
40
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 369typedef eio_req *aio_req;
370typedef eio_req *aio_req_ornot;
371typedef eio_wd aio_wd;
57 372
58static int started; 373static SV *on_next_submit;
59static volatile int nreqs; 374static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 375static int max_outstanding;
61static int respipe [2];
62 376
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 377static s_epipe respipe;
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 378
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 379static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 380static void req_cancel (aio_req req);
69 381
70static void 382static void
71poll_wait () 383want_poll (void)
72{ 384{
73 if (nreqs && !ress) 385 /* write a dummy byte to the pipe so fh becomes ready */
386 s_epipe_signal (&respipe);
387}
388
389static void
390done_poll (void)
391{
392 /* read any signals sent by the worker threads */
393 s_epipe_drain (&respipe);
394}
395
396/* must be called at most once */
397static SV *
398req_sv (aio_req req, HV *stash)
399{
400 if (!req->self)
74 { 401 {
75 fd_set rfd; 402 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 403 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 404 }
405
406 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
407}
408
409static SV *
410newSVaio_wd (aio_wd wd)
411{
412 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
413}
414
415static aio_req
416SvAIO_REQ (SV *sv)
417{
418 MAGIC *mg;
419
420 if (!SvROK (sv)
421 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
422 || (SvSTASH (SvRV (sv)) != aio_grp_stash
423 && SvSTASH (SvRV (sv)) != aio_req_stash
424 && !sv_derived_from (sv, "IO::AIO::REQ")))
425 croak ("object of class IO::AIO::REQ expected");
426
427 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
428
429 return mg ? (aio_req)mg->mg_ptr : 0;
430}
431
432static aio_wd
433SvAIO_WD (SV *sv)
434{
435 if (!SvROK (sv)
436 || SvTYPE (SvRV (sv)) != SVt_PVMG
437 || SvSTASH (SvRV (sv)) != aio_wd_stash)
438 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
439
440 return (aio_wd)(long)SvIVX (SvRV (sv));
441}
442
443static SV *
444newmortalFH (int fd, int flags)
445{
446 if (fd < 0)
447 return &PL_sv_undef;
448
449 GV *gv = (GV *)sv_newmortal ();
450 char sym[64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
454 gv_init (gv, aio_stash, sym, symlen, 0);
455
456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 fd
462 );
463
464 return do_open (gv, sym, symlen, 0, 0, 0, 0)
465 ? (SV *)gv : &PL_sv_undef;
466}
467
468static void
469aio_grp_feed (aio_req grp)
470{
471 if (grp->sv2 && SvOK (grp->sv2))
472 {
473 dSP;
474
475 ENTER;
476 SAVETMPS;
477 PUSHMARK (SP);
478 XPUSHs (req_sv (grp, aio_grp_stash));
479 PUTBACK;
480 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
481 SPAGAIN;
482 FREETMPS;
483 LEAVE;
484 }
485}
486
487static void
488req_submit (eio_req *req)
489{
490 eio_submit (req);
491
492 if (expect_false (on_next_submit))
493 {
494 dSP;
495 SV *cb = sv_2mortal (on_next_submit);
496
497 on_next_submit = 0;
498
499 PUSHMARK (SP);
500 PUTBACK;
501 call_sv (cb, G_DISCARD | G_EVAL);
502 }
81} 503}
82 504
83static int 505static int
84poll_cb () 506req_invoke (eio_req *req)
85{ 507{
86 dSP; 508 if (req->flags & FLAG_SV2_RO_OFF)
87 int count = 0; 509 SvREADONLY_off (req->sv2);
88 aio_req req, prv;
89 510
90 pthread_mutex_lock (&reslock); 511 if (!EIO_CANCELLED (req) && req->callback)
91
92 {
93 /* read any signals sent by the worker threads */
94 char buf [32];
95 while (read (respipe [0], buf, 32) > 0)
96 ;
97 }
98
99 req = ress;
100 ress = rese = 0;
101
102 pthread_mutex_unlock (&reslock);
103
104 while (req)
105 { 512 {
106 nreqs--; 513 dSP;
514 static SV *sv_result_cache; /* caches the result integer SV */
515 SV *sv_result;
107 516
108 if (req->type == REQ_QUIT) 517 ENTER;
109 started--; 518 SAVETMPS;
110 else 519 PUSHMARK (SP);
520 EXTEND (SP, 1);
521
522 /* do not recreate the result IV from scratch each time */
523 if (expect_true (sv_result_cache))
111 { 524 {
112 int errorno = errno; 525 sv_result = sv_result_cache; sv_result_cache = 0;
113 errno = req->errorno; 526 SvIV_set (sv_result, req->result);
114 527 SvIOK_only (sv_result);
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123 {
124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125 PL_laststatval = req->result;
126 PL_statcache = *(req->statdata);
127
128 Safefree (req->statdata);
129 }
130
131 PUSHMARK (SP);
132 XPUSHs (sv_2mortal (newSViv (req->result)));
133
134 if (req->type == REQ_OPEN)
135 {
136 /* convert fd to fh */
137 SV *fh;
138
139 PUTBACK;
140 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
141 SPAGAIN;
142
143 fh = POPs;
144
145 PUSHMARK (SP);
146 XPUSHs (fh);
147 }
148
149 if (SvOK (req->callback))
150 {
151 PUTBACK;
152 call_sv (req->callback, G_VOID | G_EVAL);
153 SPAGAIN;
154 }
155
156 if (req->callback)
157 SvREFCNT_dec (req->callback);
158
159 errno = errorno;
160 count++;
161 }
162
163 prv = req;
164 req = req->next;
165 Safefree (prv);
166
167 /* TODO: croak on errors? */
168 }
169
170 return count;
171}
172
173static void *aio_proc(void *arg);
174
175static void
176start_thread (void)
177{
178 sigset_t fullsigset, oldsigset;
179 pthread_t tid;
180 pthread_attr_t attr;
181
182 pthread_attr_init (&attr);
183 pthread_attr_setstacksize (&attr, STACKSIZE);
184 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
185
186 sigfillset (&fullsigset);
187 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
188
189 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
190 started++;
191
192 sigprocmask (SIG_SETMASK, &oldsigset, 0);
193}
194
195static void
196send_req (aio_req req)
197{
198 nreqs++;
199
200 pthread_mutex_lock (&reqlock);
201
202 req->next = 0;
203
204 if (reqe)
205 {
206 reqe->next = req;
207 reqe = req;
208 }
209 else
210 reqe = reqs = req;
211
212 pthread_cond_signal (&reqwait);
213 pthread_mutex_unlock (&reqlock);
214
215 while (nreqs > max_outstanding)
216 {
217 poll_wait ();
218 poll_cb ();
219 }
220}
221
222static void
223end_thread (void)
224{
225 aio_req req;
226 New (0, req, 1, aio_cb);
227 req->type = REQ_QUIT;
228
229 send_req (req);
230}
231
232static void
233read_write (int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239
240 SvUPGRADE (data, SVt_PV);
241 SvPOK_on (data);
242
243 if (dataoffset < 0)
244 dataoffset += svlen;
245
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 {
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260
261 if (length < 0)
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278}
279
280static void *
281aio_proc (void *thr_arg)
282{
283 aio_req req;
284 int type;
285
286 do
287 {
288 pthread_mutex_lock (&reqlock);
289
290 for (;;)
291 {
292 req = reqs;
293
294 if (reqs)
295 {
296 reqs = reqs->next;
297 if (!reqs) reqe = 0;
298 }
299
300 if (req)
301 break;
302
303 pthread_cond_wait (&reqwait, &reqlock);
304 }
305
306 pthread_mutex_unlock (&reqlock);
307
308 errno = 0; /* strictly unnecessary */
309
310 type = req->type;
311
312 switch (type)
313 {
314 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif
321
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
329
330 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332
333 case REQ_QUIT:
334 break;
335
336 default:
337 req->result = ENOSYS;
338 break;
339 }
340
341 req->errorno = errno;
342
343 pthread_mutex_lock (&reslock);
344
345 req->next = 0;
346
347 if (rese)
348 {
349 rese->next = req;
350 rese = req;
351 } 528 }
352 else 529 else
353 { 530 {
354 rese = ress = req; 531 sv_result = newSViv (req->result);
355 532 SvREADONLY_on (sv_result);
356 /* write a dummy byte to the pipe so fh becomes ready */
357 write (respipe [1], &respipe, 1);
358 } 533 }
359 534
360 pthread_mutex_unlock (&reslock); 535 switch (req->type)
536 {
537 case EIO_WD_OPEN:
538 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
539 break;
540
541 case EIO_READDIR:
542 {
543 SV *rv = &PL_sv_undef;
544
545 if (req->result >= 0)
546 {
547 int i;
548 char *names = (char *)req->ptr2;
549 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
550 AV *av = newAV ();
551
552 av_extend (av, req->result - 1);
553
554 for (i = 0; i < req->result; ++i)
555 {
556 if (req->int1 & EIO_READDIR_DENTS)
557 {
558 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
559
560 if (req->int1 & EIO_READDIR_CUSTOM2)
561 {
562 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
563 AV *avent = newAV ();
564
565 av_extend (avent, 2);
566
567 if (!sv_type [ent->type])
568 {
569 sv_type [ent->type] = newSViv (ent->type);
570 SvREADONLY_on (sv_type [ent->type]);
571 }
572
573 av_store (avent, 0, namesv);
574 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
575 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
576
577 av_store (av, i, newRV_noinc ((SV *)avent));
578 }
579 else
580 av_store (av, i, namesv);
581
582 ++ent;
583 }
584 else
585 {
586 SV *name = newSVpv (names, 0);
587 av_store (av, i, name);
588 names += SvCUR (name) + 1;
589 }
590 }
591
592 rv = sv_2mortal (newRV_noinc ((SV *)av));
593 }
594
595 PUSHs (rv);
596
597 if (req->int1 & EIO_READDIR_CUSTOM1)
598 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
599 }
600 break;
601
602 case EIO_OPEN:
603 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
604 break;
605
606 case EIO_STATVFS:
607 case EIO_FSTATVFS:
608 {
609 SV *rv = &PL_sv_undef;
610
611#ifndef _WIN32
612 if (req->result >= 0)
613 {
614 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
615 HV *hv = newHV ();
616 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
617 * chooses to make it a struct.
618 */
619 unsigned long fsid = 0;
620 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
621
622 rv = sv_2mortal (newRV_noinc ((SV *)hv));
623
624 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
625 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
626 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
627 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
628 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
629 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
630 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
631 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
632 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
633 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
634 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
635 }
636#endif
637
638 PUSHs (rv);
639 }
640
641 break;
642
643 case EIO_GROUP:
644 req->int1 = 2; /* mark group as finished */
645
646 if (req->sv1)
647 {
648 int i;
649 AV *av = (AV *)req->sv1;
650
651 EXTEND (SP, AvFILL (av) + 1);
652 for (i = 0; i <= AvFILL (av); ++i)
653 PUSHs (*av_fetch (av, i, 0));
654 }
655 break;
656
657 case EIO_NOP:
658 case EIO_BUSY:
659 break;
660
661 case EIO_READLINK:
662 case EIO_REALPATH:
663 if (req->result > 0)
664 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
665 break;
666
667 case EIO_STAT:
668 case EIO_LSTAT:
669 case EIO_FSTAT:
670 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
671
672 if (!(PL_laststatval = req->result))
673 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
674 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
675
676 PUSHs (sv_result);
677 break;
678
679 case EIO_SEEK:
680 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
681 break;
682
683 case EIO_READ:
684 {
685 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
686 *SvEND (req->sv2) = 0;
687 SvPOK_only (req->sv2);
688 SvSETMAGIC (req->sv2);
689 PUSHs (sv_result);
690 }
691 break;
692
693 case EIO_SLURP:
694 {
695 if (req->result >= 0)
696 {
697 /* if length was originally not known, we steal the malloc'ed memory */
698 if (req->flags & EIO_FLAG_PTR2_FREE)
699 {
700 req->flags &= ~EIO_FLAG_PTR2_FREE;
701 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
702 }
703 else
704 SvCUR_set (req->sv2, req->result);
705 }
706
707 PUSHs (sv_result);
708 }
709 break;
710
711 case EIO_CUSTOM:
712 if (req->feed == fiemap)
713 {
714#if HAVE_FIEMAP
715 if (!req->result)
716 {
717 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
718
719 if (fiemap->fm_extent_count)
720 {
721 AV *av = newAV ();
722 int i;
723
724 while (fiemap->fm_mapped_extents)
725 {
726 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
727 AV *ext_av = newAV ();
728
729 av_store (ext_av, 3, newSVuv (extent->fe_flags));
730 av_store (ext_av, 2, newSVval64 (extent->fe_length));
731 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
732 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
733
734 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
735 }
736
737 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
738 }
739 else
740 {
741 SvIV_set (sv_result, fiemap->fm_mapped_extents);
742 PUSHs (sv_result);
743 }
744 }
745#endif
746 }
747 else
748 PUSHs (sv_result);
749 break;
750
751 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
752 if (req->result > 0)
753 SvIV_set (sv_result, 0);
754 /* FALLTHROUGH */
755
756 default:
757 PUSHs (sv_result);
758 break;
759 }
760
761 errno = req->errorno;
762
763 PUTBACK;
764 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
765 SPAGAIN;
766
767 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
768 SvREFCNT_dec (sv_result);
769 else
770 sv_result_cache = sv_result;
771
772 FREETMPS;
773 LEAVE;
774
775 PUTBACK;
361 } 776 }
362 while (type != REQ_QUIT);
363 777
778 return !!SvTRUE (ERRSV);
779}
780
781static void
782req_destroy (aio_req req)
783{
784 if (req->self)
785 {
786 sv_unmagic (req->self, PERL_MAGIC_ext);
787 SvREFCNT_dec (req->self);
788 }
789
790 SvREFCNT_dec (req->sv1);
791 SvREFCNT_dec (req->sv2);
792 SvREFCNT_dec (req->sv3);
793 SvREFCNT_dec (req->sv4);
794 SvREFCNT_dec (req->callback);
795
796 free (req);
797}
798
799static void
800req_cancel_subs (aio_req grp)
801{
802 if (grp->type != EIO_GROUP)
803 return;
804
805 SvREFCNT_dec (grp->sv2);
806 grp->sv2 = 0;
807
808 eio_grp_cancel (grp);
809}
810
811static void ecb_cold
812create_respipe (void)
813{
814 if (s_epipe_renew (&respipe))
815 croak ("IO::AIO: unable to initialize result pipe");
816}
817
818static void
819poll_wait (void)
820{
821 while (eio_nreqs ())
822 {
823 int size;
824
825 X_LOCK (EIO_POOL->reslock);
826 size = EIO_POOL->res_queue.size;
827 X_UNLOCK (EIO_POOL->reslock);
828
829 if (size)
830 return;
831
832 etp_maybe_start_thread (EIO_POOL);
833
834 s_epipe_wait (&respipe);
835 }
836}
837
838static int
839poll_cb (void)
840{
841 for (;;)
842 {
843 int res = eio_poll ();
844
845 if (res > 0)
846 croak (0);
847
848 if (!max_outstanding || max_outstanding > eio_nreqs ())
849 return res;
850
851 poll_wait ();
852 }
853}
854
855static void ecb_cold
856reinit (void)
857{
858 create_respipe ();
859
860 if (eio_init (want_poll, done_poll) < 0)
861 croak ("IO::AIO: unable to initialise eio library");
862}
863
864/*****************************************************************************/
865
866static SV *
867get_cb (SV *cb_sv)
868{
869 SvGETMAGIC (cb_sv);
870 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
871}
872
873static aio_req ecb_noinline
874dreq (SV *callback)
875{
876 SV *cb_cv;
877 aio_req req;
878 int req_pri = next_pri;
879 next_pri = EIO_PRI_DEFAULT;
880
881 cb_cv = get_cb (callback);
882
883 req = calloc (sizeof (*req), 1);
884 if (!req)
885 croak ("out of memory during eio_req allocation");
886
887 req->callback = SvREFCNT_inc (cb_cv);
888 req->pri = req_pri;
889
364 return 0; 890 return req;
365} 891}
892
893#define dREQ \
894 aio_req req = dreq (callback); \
895
896#define REQ_SEND \
897 PUTBACK; \
898 req_submit (req); \
899 SPAGAIN; \
900 \
901 if (GIMME_V != G_VOID) \
902 XPUSHs (req_sv (req, aio_req_stash));
903
904ecb_inline void
905req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
906{
907 if (expect_false (SvROK (path)))
908 {
909 SV *rv = SvRV (path);
910 SV *wdob;
911
912 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
913 {
914 path = AvARRAY (rv)[1];
915 wdob = AvARRAY (rv)[0];
916
917 if (SvOK (wdob))
918 {
919 *wd = SvAIO_WD (wdob);
920 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
921 }
922 else
923 *wd = EIO_INVALID_WD;
924 }
925 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
926 {
927 *wd = (aio_wd)(long)SvIVX (rv);
928 *wdsv = SvREFCNT_inc_NN (rv);
929 *ptr = ".";
930 return; /* path set to "." */
931 }
932 else
933 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
934 }
935
936 *pathsv = newSVsv (path);
937 *ptr = SvPVbyte_nolen (*pathsv);
938}
939
940static void ecb_noinline
941req_set_path1 (aio_req req, SV *path)
942{
943 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
944}
945
946static void ecb_noinline
947req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
948{
949 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
950
951 switch (SvTYPE (rv))
952 {
953 case SVt_PVIO:
954 case SVt_PVLV:
955 case SVt_PVGV:
956 req->type = type_fh;
957 req->sv1 = newSVsv (fh_or_path);
958 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
959 break;
960
961 default:
962 req->type = type_path;
963 req_set_path1 (req, fh_or_path);
964 break;
965 }
966}
967
968XS(boot_IO__AIO) ecb_cold;
366 969
367MODULE = IO::AIO PACKAGE = IO::AIO 970MODULE = IO::AIO PACKAGE = IO::AIO
368 971
369PROTOTYPES: ENABLE 972PROTOTYPES: ENABLE
370 973
371BOOT: 974BOOT:
372{ 975{
373 if (pipe (respipe)) 976 static const struct {
374 croak ("unable to initialize result pipe"); 977 const char *name;
978 IV iv;
979 } *civ, const_iv[] = {
980# define const_niv(name, value) { # name, (IV) value },
981# define const_iv(name) { # name, (IV) name },
982# define const_eio(name) { # name, (IV) EIO_ ## name },
375 983
376 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 984 /* you have to re-run ./gendef0 after adding/removing any constants here */
377 croak ("cannot set result pipe to nonblocking mode"); 985 /* the first block can be undef if missing */
986 const_iv (ENOSYS)
987 const_iv (EXDEV)
988 const_iv (EBADR)
378 989
379 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 990 /* for lseek */
380 croak ("cannot set result pipe to nonblocking mode"); 991 const_iv (SEEK_DATA)
381} 992 const_iv (SEEK_HOLE)
382 993
994 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
995 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
996 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
997 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
998 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
999 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1000
1001 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1002 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1003 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1004 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1005 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1006
1007 /* the second block will be 0 when missing */
1008 const_iv (O_RDONLY)
1009 const_iv (O_WRONLY)
1010 const_iv (O_RDWR)
1011 const_iv (O_CREAT)
1012 const_iv (O_TRUNC)
1013 const_iv (O_EXCL)
1014 const_iv (O_APPEND)
1015
1016 const_iv (O_ASYNC)
1017 const_iv (O_DIRECT)
1018 const_iv (O_NOATIME)
1019
1020 const_iv (O_CLOEXEC)
1021 const_iv (O_NOCTTY)
1022 const_iv (O_NOFOLLOW)
1023 const_iv (O_NONBLOCK)
1024 const_iv (O_EXEC)
1025 const_iv (O_SEARCH)
1026 const_iv (O_DIRECTORY)
1027 const_iv (O_DSYNC)
1028 const_iv (O_RSYNC)
1029 const_iv (O_SYNC)
1030 const_iv (O_PATH)
1031 const_iv (O_TMPFILE)
1032 const_iv (O_TTY_INIT)
1033
1034 const_iv (S_IFIFO)
1035 const_iv (S_IFCHR)
1036 const_iv (S_IFBLK)
1037 const_iv (S_IFLNK)
1038 const_iv (S_IFREG)
1039 const_iv (S_IFDIR)
1040 const_iv (S_IFWHT)
1041 const_iv (S_IFSOCK)
1042 const_iv (S_IFMT)
1043
1044 const_iv (ST_RDONLY)
1045 const_iv (ST_NOSUID)
1046 const_iv (ST_NODEV)
1047 const_iv (ST_NOEXEC)
1048 const_iv (ST_SYNCHRONOUS)
1049 const_iv (ST_MANDLOCK)
1050 const_iv (ST_WRITE)
1051 const_iv (ST_APPEND)
1052 const_iv (ST_IMMUTABLE)
1053 const_iv (ST_NOATIME)
1054 const_iv (ST_NODIRATIME)
1055 const_iv (ST_RELATIME)
1056
1057 const_iv (PROT_NONE)
1058 const_iv (PROT_EXEC)
1059 const_iv (PROT_READ)
1060 const_iv (PROT_WRITE)
1061
1062 const_iv (MAP_PRIVATE)
1063 const_iv (MAP_SHARED)
1064 const_iv (MAP_FIXED)
1065 const_iv (MAP_ANONYMOUS)
1066
1067 /* linuxish */
1068 const_iv (MAP_LOCKED)
1069 const_iv (MAP_NORESERVE)
1070 const_iv (MAP_POPULATE)
1071 const_iv (MAP_NONBLOCK)
1072 const_iv (MAP_GROWSDOWN)
1073 const_iv (MAP_32BIT)
1074 const_iv (MAP_HUGETLB)
1075 const_iv (MAP_STACK)
1076
1077 const_iv (F_DUPFD_CLOEXEC)
1078
1079 const_iv (F_OFD_GETLK)
1080 const_iv (F_OFD_SETLK)
1081 const_iv (F_OFD_GETLKW)
1082
1083 const_iv (FIFREEZE)
1084 const_iv (FITHAW)
1085 const_iv (FITRIM)
1086 const_iv (FICLONE)
1087 const_iv (FICLONERANGE)
1088 const_iv (FIDEDUPERANGE)
1089
1090 const_iv (FS_IOC_GETFLAGS)
1091 const_iv (FS_IOC_SETFLAGS)
1092 const_iv (FS_IOC_GETVERSION)
1093 const_iv (FS_IOC_SETVERSION)
1094 const_iv (FS_IOC_FIEMAP)
1095 const_iv (FS_IOC_FSGETXATTR)
1096 const_iv (FS_IOC_FSSETXATTR)
1097 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1098 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1099 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1100
1101 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1102
1103 const_iv (FS_SECRM_FL)
1104 const_iv (FS_UNRM_FL)
1105 const_iv (FS_COMPR_FL)
1106 const_iv (FS_SYNC_FL)
1107 const_iv (FS_IMMUTABLE_FL)
1108 const_iv (FS_APPEND_FL)
1109 const_iv (FS_NODUMP_FL)
1110 const_iv (FS_NOATIME_FL)
1111 const_iv (FS_DIRTY_FL)
1112 const_iv (FS_COMPRBLK_FL)
1113 const_iv (FS_NOCOMP_FL)
1114 const_iv (FS_ENCRYPT_FL)
1115 const_iv (FS_BTREE_FL)
1116 const_iv (FS_INDEX_FL)
1117 const_iv (FS_JOURNAL_DATA_FL)
1118 const_iv (FS_NOTAIL_FL)
1119 const_iv (FS_DIRSYNC_FL)
1120 const_iv (FS_TOPDIR_FL)
1121 const_iv (FS_FL_USER_MODIFIABLE)
1122
1123 const_iv (FS_XFLAG_REALTIME)
1124 const_iv (FS_XFLAG_PREALLOC)
1125 const_iv (FS_XFLAG_IMMUTABLE)
1126 const_iv (FS_XFLAG_APPEND)
1127 const_iv (FS_XFLAG_SYNC)
1128 const_iv (FS_XFLAG_NOATIME)
1129 const_iv (FS_XFLAG_NODUMP)
1130 const_iv (FS_XFLAG_RTINHERIT)
1131 const_iv (FS_XFLAG_PROJINHERIT)
1132 const_iv (FS_XFLAG_NOSYMLINKS)
1133 const_iv (FS_XFLAG_EXTSIZE)
1134 const_iv (FS_XFLAG_EXTSZINHERIT)
1135 const_iv (FS_XFLAG_NODEFRAG)
1136 const_iv (FS_XFLAG_FILESTREAM)
1137 const_iv (FS_XFLAG_DAX)
1138 const_iv (FS_XFLAG_HASATTR)
1139
1140 const_iv (FIEMAP_FLAG_SYNC)
1141 const_iv (FIEMAP_FLAG_XATTR)
1142 const_iv (FIEMAP_FLAGS_COMPAT)
1143 const_iv (FIEMAP_EXTENT_LAST)
1144 const_iv (FIEMAP_EXTENT_UNKNOWN)
1145 const_iv (FIEMAP_EXTENT_DELALLOC)
1146 const_iv (FIEMAP_EXTENT_ENCODED)
1147 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1148 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1149 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1150 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1151 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1152 const_iv (FIEMAP_EXTENT_MERGED)
1153 const_iv (FIEMAP_EXTENT_SHARED)
1154
1155 const_iv (SPLICE_F_MOVE)
1156 const_iv (SPLICE_F_NONBLOCK)
1157 const_iv (SPLICE_F_MORE)
1158 const_iv (SPLICE_F_GIFT)
1159
1160 /* these are libeio constants, and are independent of gendef0 */
1161 const_eio (SEEK_SET)
1162 const_eio (SEEK_CUR)
1163 const_eio (SEEK_END)
1164
1165 const_eio (MCL_FUTURE)
1166 const_eio (MCL_CURRENT)
1167
1168 const_eio (MS_ASYNC)
1169 const_eio (MS_INVALIDATE)
1170 const_eio (MS_SYNC)
1171
1172 const_eio (MT_MODIFY)
1173
1174 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1175 const_eio (SYNC_FILE_RANGE_WRITE)
1176 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1177
1178 const_eio (FALLOC_FL_KEEP_SIZE)
1179 const_eio (FALLOC_FL_PUNCH_HOLE)
1180 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1181 const_eio (FALLOC_FL_ZERO_RANGE)
1182 const_eio (FALLOC_FL_INSERT_RANGE)
1183 const_eio (FALLOC_FL_UNSHARE_RANGE)
1184
1185 const_eio (RENAME_NOREPLACE)
1186 const_eio (RENAME_EXCHANGE)
1187 const_eio (RENAME_WHITEOUT)
1188
1189 const_eio (READDIR_DENTS)
1190 const_eio (READDIR_DIRS_FIRST)
1191 const_eio (READDIR_STAT_ORDER)
1192 const_eio (READDIR_FOUND_UNKNOWN)
1193
1194 const_eio (DT_UNKNOWN)
1195 const_eio (DT_FIFO)
1196 const_eio (DT_CHR)
1197 const_eio (DT_DIR)
1198 const_eio (DT_BLK)
1199 const_eio (DT_REG)
1200 const_eio (DT_LNK)
1201 const_eio (DT_SOCK)
1202 const_eio (DT_WHT)
1203 };
1204
1205 aio_stash = gv_stashpv ("IO::AIO" , 1);
1206 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1207 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1208 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1209
1210 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1211 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1212
1213 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1214
1215 reinit ();
1216}
1217
383void 1218void
384min_parallel(nthreads) 1219reinit ()
385 int nthreads 1220 PROTOTYPE:
1221
1222void
1223max_poll_reqs (unsigned int nreqs)
386 PROTOTYPE: $ 1224 PROTOTYPE: $
387 CODE: 1225 CODE:
388 while (nthreads > started) 1226 eio_set_max_poll_reqs (nreqs);
389 start_thread ();
390 1227
391void 1228void
392max_parallel(nthreads) 1229max_poll_time (double nseconds)
393 int nthreads
394 PROTOTYPE: $ 1230 PROTOTYPE: $
395 CODE: 1231 CODE:
1232 eio_set_max_poll_time (nseconds);
1233
1234void
1235min_parallel (unsigned int nthreads)
1236 PROTOTYPE: $
1237 CODE:
1238 eio_set_min_parallel (nthreads);
1239
1240void
1241max_parallel (unsigned int nthreads)
1242 PROTOTYPE: $
1243 CODE:
1244 eio_set_max_parallel (nthreads);
1245
1246void
1247max_idle (unsigned int nthreads)
1248 PROTOTYPE: $
1249 CODE:
1250 eio_set_max_idle (nthreads);
1251
1252void
1253idle_timeout (unsigned int seconds)
1254 PROTOTYPE: $
1255 CODE:
1256 eio_set_idle_timeout (seconds);
1257
1258void
1259max_outstanding (unsigned int maxreqs)
1260 PROTOTYPE: $
1261 CODE:
1262 max_outstanding = maxreqs;
1263
1264void
1265aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1266 PPCODE:
396{ 1267{
397 int cur = started; 1268 dREQ;
398 while (cur > nthreads) 1269
399 { 1270 req->type = EIO_WD_OPEN;
400 end_thread (); 1271 req_set_path1 (req, pathname);
1272
1273 REQ_SEND;
1274}
1275
1276void
1277aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1278 PPCODE:
1279{
1280 dREQ;
1281
1282 req->type = EIO_OPEN;
1283 req_set_path1 (req, pathname);
1284 req->int1 = flags;
1285 req->int2 = mode;
1286
1287 REQ_SEND;
1288}
1289
1290void
1291aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1292 ALIAS:
1293 aio_fsync = EIO_FSYNC
1294 aio_fdatasync = EIO_FDATASYNC
1295 aio_syncfs = EIO_SYNCFS
1296 PPCODE:
1297{
1298 int fd = s_fileno_croak (fh, 0);
1299 dREQ;
1300
1301 req->type = ix;
1302 req->sv1 = newSVsv (fh);
1303 req->int1 = fd;
1304
1305 REQ_SEND;
1306}
1307
1308void
1309aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1310 PPCODE:
1311{
1312 int fd = s_fileno_croak (fh, 0);
1313 dREQ;
1314
1315 req->type = EIO_SYNC_FILE_RANGE;
1316 req->sv1 = newSVsv (fh);
1317 req->int1 = fd;
1318 req->offs = offset;
1319 req->size = nbytes;
1320 req->int2 = flags;
1321
1322 REQ_SEND;
1323}
1324
1325void
1326aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1327 PPCODE:
1328{
1329 int fd = s_fileno_croak (fh, 0);
1330 dREQ;
1331
1332 req->type = EIO_FALLOCATE;
1333 req->sv1 = newSVsv (fh);
1334 req->int1 = fd;
1335 req->int2 = mode;
1336 req->offs = offset;
1337 req->size = len;
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_close (SV *fh, SV *callback = &PL_sv_undef)
1344 PPCODE:
1345{
1346 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1347 int fd = s_fileno_croak (fh, 0);
1348 dREQ;
1349
1350 if (expect_false (close_fd < 0))
1351 {
1352 int pipefd [2];
1353
1354 if (
1355#ifdef _WIN32
1356 _pipe (pipefd, 1, _O_BINARY) < 0
1357#else
1358 pipe (pipefd) < 0
1359 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1360#endif
1361 || close (pipefd [1]) < 0
401 cur--; 1362 )
1363 abort (); /*D*/
1364
1365 close_fd = pipefd [0];
402 } 1366 }
403 1367
404 while (started > nthreads) 1368 req->type = EIO_DUP2;
1369 req->int1 = close_fd;
1370 req->sv2 = newSVsv (fh);
1371 req->int2 = fd;
1372
1373 REQ_SEND;
1374}
1375
1376void
1377aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1378 PPCODE:
1379{
1380 int fd = s_fileno_croak (fh, 0);
1381 dREQ;
1382
1383 req->type = EIO_SEEK;
1384 req->sv1 = newSVsv (fh);
1385 req->int1 = fd;
1386 req->offs = SvVAL64 (offset);
1387 req->int2 = whence;
1388
1389 REQ_SEND;
1390}
1391
1392void
1393aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1394 ALIAS:
1395 aio_read = EIO_READ
1396 aio_write = EIO_WRITE
1397 PPCODE:
1398{
1399 STRLEN svlen;
1400 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1401 char *svptr = SvPVbyte (data, svlen);
1402 UV len = SvUV (length);
1403
1404 if (dataoffset < 0)
1405 dataoffset += svlen;
1406
1407 if (dataoffset < 0 || dataoffset > svlen)
1408 croak ("dataoffset outside of data scalar");
1409
1410 if (ix == EIO_WRITE)
1411 {
1412 /* write: check length and adjust. */
1413 if (!SvOK (length) || len + dataoffset > svlen)
1414 len = svlen - dataoffset;
1415 }
1416 else
1417 {
1418 /* read: check type and grow scalar as necessary */
1419 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1420 svptr = sv_grow (data, len + dataoffset);
1421 else if (SvCUR (data) < len + dataoffset)
1422 croak ("length + dataoffset outside of scalar, and cannot grow");
1423 }
1424
1425 {
1426 dREQ;
1427
1428 req->type = ix;
1429 req->sv1 = newSVsv (fh);
1430 req->int1 = fd;
1431 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1432 req->size = len;
1433 req->sv2 = SvREFCNT_inc (data);
1434 req->ptr2 = (char *)svptr + dataoffset;
1435 req->stroffset = dataoffset;
1436
1437 if (!SvREADONLY (data))
1438 {
1439 SvREADONLY_on (data);
1440 req->flags |= FLAG_SV2_RO_OFF;
1441 }
1442
1443 REQ_SEND;
1444 }
1445}
1446
1447void
1448aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1449 ALIAS:
1450 aio_ioctl = EIO_IOCTL
1451 aio_fcntl = EIO_FCNTL
1452 PPCODE:
1453{
1454 int fd = s_fileno_croak (fh, 0);
1455 char *svptr;
1456
1457 if (SvPOK (arg) || !SvNIOK (arg))
1458 {
1459 STRLEN svlen;
1460 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1461#ifdef IOCPARM_LEN
1462 STRLEN need = IOCPARM_LEN (request);
1463#else
1464 STRLEN need = 256;
1465#endif
1466
1467 if (svlen < need)
1468 svptr = SvGROW (arg, need);
1469 }
1470 else
1471 svptr = (char *)SvIV (arg);
1472
1473 {
1474 dREQ;
1475
1476 req->type = ix;
1477 req->sv1 = newSVsv (fh);
1478 req->int1 = fd;
1479 req->int2 = (long)request;
1480 req->sv2 = SvREFCNT_inc (arg);
1481 req->ptr2 = svptr;
1482
1483 REQ_SEND;
1484 }
1485}
1486
1487void
1488aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1489 ALIAS:
1490 aio_readlink = EIO_READLINK
1491 aio_realpath = EIO_REALPATH
1492 PPCODE:
1493{
1494 dREQ;
1495
1496 req->type = ix;
1497 req_set_path1 (req, pathname);
1498
1499 REQ_SEND;
1500}
1501
1502void
1503aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1504 PPCODE:
1505{
1506 int ifd = s_fileno_croak (in_fh , 0);
1507 int ofd = s_fileno_croak (out_fh, 1);
1508 dREQ;
1509
1510 req->type = EIO_SENDFILE;
1511 req->sv1 = newSVsv (out_fh);
1512 req->int1 = ofd;
1513 req->sv2 = newSVsv (in_fh);
1514 req->int2 = ifd;
1515 req->offs = in_offset;
1516 req->size = length;
1517
1518 REQ_SEND;
1519}
1520
1521void
1522aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1523 PPCODE:
1524{
1525 int fd = s_fileno_croak (fh, 0);
1526 dREQ;
1527
1528 req->type = EIO_READAHEAD;
1529 req->sv1 = newSVsv (fh);
1530 req->int1 = fd;
1531 req->offs = offset;
1532 req->size = length;
1533
1534 REQ_SEND;
1535}
1536
1537void
1538aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1539 ALIAS:
1540 aio_stat = EIO_STAT
1541 aio_lstat = EIO_LSTAT
1542 aio_statvfs = EIO_STATVFS
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1548
1549 REQ_SEND;
1550}
1551
1552UV
1553major (UV dev)
1554 ALIAS:
1555 minor = 1
1556 CODE:
1557 RETVAL = ix ? minor (dev) : major (dev);
1558 OUTPUT:
1559 RETVAL
1560
1561UV
1562makedev (UV maj, UV min)
1563 CODE:
1564 RETVAL = makedev (maj, min);
1565 OUTPUT:
1566 RETVAL
1567
1568void
1569aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1570 PPCODE:
1571{
1572 dREQ;
1573
1574 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1575 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1576 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1577
1578 REQ_SEND;
1579}
1580
1581void
1582aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1583 PPCODE:
1584{
1585 dREQ;
1586
1587 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1588 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1589
1590 REQ_SEND;
1591}
1592
1593void
1594aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1595 PPCODE:
1596{
1597 dREQ;
1598
1599 req->int2 = mode;
1600 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1601
1602 REQ_SEND;
1603}
1604
1605void
1606aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1607 PPCODE:
1608{
1609 dREQ;
1610
1611 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1612 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1613 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1614
1615 REQ_SEND;
1616}
1617
1618void
1619aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1620 PPCODE:
1621{
1622 dREQ;
1623
1624 req->type = EIO_READDIR;
1625 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1626
1627 if (flags & EIO_READDIR_DENTS)
1628 req->int1 |= EIO_READDIR_CUSTOM2;
1629
1630 req_set_path1 (req, pathname);
1631
1632 REQ_SEND;
1633}
1634
1635void
1636aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1637 PPCODE:
1638{
1639 dREQ;
1640
1641 req->type = EIO_MKDIR;
1642 req->int2 = mode;
1643 req_set_path1 (req, pathname);
1644
1645 REQ_SEND;
1646}
1647
1648void
1649aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1650 ALIAS:
1651 aio_unlink = EIO_UNLINK
1652 aio_rmdir = EIO_RMDIR
1653 aio_readdir = EIO_READDIR
1654 PPCODE:
1655{
1656 dREQ;
1657
1658 req->type = ix;
1659 req_set_path1 (req, pathname);
1660
1661 REQ_SEND;
1662}
1663
1664void
1665aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1666 ALIAS:
1667 aio_link = EIO_LINK
1668 aio_symlink = EIO_SYMLINK
1669 aio_rename = EIO_RENAME
1670 PPCODE:
1671{
1672 eio_wd wd2 = 0;
1673 dREQ;
1674
1675 req->type = ix;
1676 req_set_path1 (req, oldpath);
1677 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1678 req->int3 = (long)wd2;
1679
1680 REQ_SEND;
1681}
1682
1683void
1684aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1685 PPCODE:
1686{
1687 eio_wd wd2 = 0;
1688 dREQ;
1689
1690 req->type = EIO_RENAME;
1691 req_set_path1 (req, oldpath);
1692 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1693 req->int2 = flags;
1694 req->int3 = (long)wd2;
1695
1696 REQ_SEND;
1697}
1698
1699void
1700aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1701 PPCODE:
1702{
1703 dREQ;
1704
1705 req->type = EIO_MKNOD;
1706 req->int2 = (mode_t)mode;
1707 req->offs = dev;
1708 req_set_path1 (req, pathname);
1709
1710 REQ_SEND;
1711}
1712
1713void
1714aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1715 ALIAS:
1716 aio_mtouch = EIO_MTOUCH
1717 aio_msync = EIO_MSYNC
1718 PPCODE:
1719{
1720 STRLEN svlen;
1721 char *svptr = SvPVbyte (data, svlen);
1722 UV len = SvUV (length);
1723
1724 if (flags < 0)
1725 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1726
1727 if (offset < 0)
1728 offset += svlen;
1729
1730 if (offset < 0 || offset > svlen)
1731 croak ("offset outside of scalar");
1732
1733 if (!SvOK (length) || len + offset > svlen)
1734 len = svlen - offset;
1735
1736 {
1737 dREQ;
1738
1739 req->type = ix;
1740 req->sv2 = SvREFCNT_inc (data);
1741 req->ptr2 = (char *)svptr + offset;
1742 req->size = len;
1743 req->int1 = flags;
1744
1745 REQ_SEND;
1746 }
1747}
1748
1749void
1750aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1751 PPCODE:
1752{
1753 STRLEN svlen;
1754 char *svptr = SvPVbyte (data, svlen);
1755 UV len = SvUV (length);
1756
1757 if (offset < 0)
1758 offset += svlen;
1759
1760 if (offset < 0 || offset > svlen)
1761 croak ("offset outside of scalar");
1762
1763 if (!SvOK (length) || len + offset > svlen)
1764 len = svlen - offset;
1765
1766 {
1767 dREQ;
1768
1769 req->type = EIO_MLOCK;
1770 req->sv2 = SvREFCNT_inc (data);
1771 req->ptr2 = (char *)svptr + offset;
1772 req->size = len;
1773
1774 REQ_SEND;
1775 }
1776}
1777
1778void
1779aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1780 PPCODE:
1781{
1782 dREQ;
1783
1784 req->type = EIO_MLOCKALL;
1785 req->int1 = flags;
1786
1787 REQ_SEND;
1788}
1789
1790void
1791aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1792 PPCODE:
1793{
1794 int fd = s_fileno_croak (fh, 0);
1795 dREQ;
1796
1797 req->type = EIO_CUSTOM;
1798 req->sv1 = newSVsv (fh);
1799 req->int1 = fd;
1800
1801 req->feed = fiemap;
1802#if HAVE_FIEMAP
1803 /* keep our fingers crossed that the next two types are 64 bit */
1804 req->offs = start;
1805 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1806 req->int2 = flags;
1807 req->int3 = SvOK (count) ? SvIV (count) : -1;
1808#endif
1809
1810 REQ_SEND;
1811}
1812
1813void
1814aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1815 PPCODE:
1816{
1817 char *svptr = 0;
1818
1819 sv_clear_foreign (data);
1820
1821 if (length) /* known length, directly read into scalar */
1822 {
1823 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1824 svptr = sv_grow (data, length);
1825 else if (SvCUR (data) < length)
1826 croak ("length outside of scalar, and cannot grow");
1827 else
1828 svptr = SvPVbyte_nolen (data);
1829 }
1830
1831 {
1832 dREQ;
1833
1834 req->type = EIO_SLURP;
1835 req_set_path1 (req, pathname);
1836 req->offs = offset;
1837 req->size = length;
1838 req->sv2 = SvREFCNT_inc (data);
1839 req->ptr2 = svptr;
1840
1841 if (!SvREADONLY (data))
1842 {
1843 SvREADONLY_on (data);
1844 req->flags |= FLAG_SV2_RO_OFF;
1845 }
1846
1847 REQ_SEND;
1848 }
1849}
1850
1851void
1852aio_busy (double delay, SV *callback = &PL_sv_undef)
1853 PPCODE:
1854{
1855 dREQ;
1856
1857 req->type = EIO_BUSY;
1858 req->nv1 = delay < 0. ? 0. : delay;
1859
1860 REQ_SEND;
1861}
1862
1863void
1864aio_group (SV *callback = &PL_sv_undef)
1865 PPCODE:
1866{
1867 dREQ;
1868
1869 req->type = EIO_GROUP;
1870
1871 PUTBACK;
1872 req_submit (req);
1873 SPAGAIN;
1874
1875 XPUSHs (req_sv (req, aio_grp_stash));
1876}
1877
1878void
1879aio_nop (SV *callback = &PL_sv_undef)
1880 ALIAS:
1881 aio_nop = EIO_NOP
1882 aio_sync = EIO_SYNC
1883 PPCODE:
1884{
1885 dREQ;
1886
1887 req->type = ix;
1888
1889 REQ_SEND;
1890}
1891
1892int
1893aioreq_pri (int pri = NO_INIT)
1894 CODE:
1895 RETVAL = next_pri;
1896 if (items > 0)
1897 {
1898 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1899 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1900 next_pri = pri;
1901 }
1902 OUTPUT:
1903 RETVAL
1904
1905void
1906aioreq_nice (int nice = 0)
1907 CODE:
1908 nice = next_pri - nice;
1909 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1910 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1911 next_pri = nice;
1912
1913void
1914flush ()
1915 CODE:
1916 while (eio_nreqs ())
405 { 1917 {
406 poll_wait (); 1918 poll_wait ();
407 poll_cb (); 1919 poll_cb ();
408 } 1920 }
409}
410 1921
411int 1922int
412max_outstanding(nreqs) 1923poll ()
413 int nreqs
414 PROTOTYPE: $
415 CODE:
416 RETVAL = max_outstanding;
417 max_outstanding = nreqs;
418
419void
420aio_open(pathname,flags,mode,callback=&PL_sv_undef)
421 SV * pathname
422 int flags
423 int mode
424 SV * callback
425 PROTOTYPE: $$$;$
426 CODE: 1924 CODE:
427{
428 aio_req req;
429
430 Newz (0, req, 1, aio_cb);
431
432 if (!req)
433 croak ("out of memory during aio_req allocation");
434
435 req->type = REQ_OPEN;
436 req->data = newSVsv (pathname);
437 req->dataptr = SvPV_nolen (req->data);
438 req->fd = flags;
439 req->mode = mode;
440 req->callback = SvREFCNT_inc (callback);
441
442 send_req (req);
443}
444
445void
446aio_close(fh,callback=&PL_sv_undef)
447 InputStream fh
448 SV * callback
449 PROTOTYPE: $;$
450 ALIAS:
451 aio_close = REQ_CLOSE
452 aio_fsync = REQ_FSYNC
453 aio_fdatasync = REQ_FDATASYNC
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = ix;
464 req->fd = PerlIO_fileno (fh);
465 req->callback = SvREFCNT_inc (callback);
466
467 send_req (req);
468}
469
470void
471aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472 InputStream fh
473 UV offset
474 IV length
475 SV * data
476 IV dataoffset
477 SV * callback
478 PROTOTYPE: $$$$$;$
479 CODE:
480 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
481
482void
483aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
484 OutputStream fh
485 UV offset
486 IV length
487 SV * data
488 IV dataoffset
489 SV * callback
490 PROTOTYPE: $$$$$;$
491 CODE:
492 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
493
494void
495aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496 InputStream fh
497 UV offset
498 IV length
499 SV * callback
500 PROTOTYPE: $$$;$
501 CODE:
502{
503 aio_req req;
504
505 if (length < 0)
506 croak ("length must not be negative");
507
508 Newz (0, req, 1, aio_cb);
509
510 if (!req)
511 croak ("out of memory during aio_req allocation");
512
513 req->type = REQ_READAHEAD;
514 req->fd = PerlIO_fileno (fh);
515 req->offset = offset;
516 req->length = length;
517 req->callback = SvREFCNT_inc (callback);
518
519 send_req (req);
520}
521
522void
523aio_stat(fh_or_path,callback=&PL_sv_undef)
524 SV * fh_or_path
525 SV * callback
526 ALIAS:
527 aio_stat = REQ_STAT
528 aio_lstat = REQ_LSTAT
529 CODE:
530{
531 aio_req req;
532
533 Newz (0, req, 1, aio_cb);
534
535 if (!req)
536 croak ("out of memory during aio_req allocation");
537
538 New (0, req->statdata, 1, Stat_t);
539
540 if (!req->statdata)
541 croak ("out of memory during aio_req->statdata allocation");
542
543 if (SvPOK (fh_or_path))
544 {
545 req->type = ix;
546 req->data = newSVsv (fh_or_path);
547 req->dataptr = SvPV_nolen (req->data);
548 }
549 else
550 {
551 req->type = REQ_FSTAT;
552 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553 }
554
555 req->callback = SvREFCNT_inc (callback);
556
557 send_req (req);
558}
559
560void
561aio_unlink(pathname,callback=&PL_sv_undef)
562 SV * pathname
563 SV * callback
564 CODE:
565{
566 aio_req req;
567
568 Newz (0, req, 1, aio_cb);
569
570 if (!req)
571 croak ("out of memory during aio_req allocation");
572
573 req->type = REQ_UNLINK;
574 req->data = newSVsv (pathname);
575 req->dataptr = SvPV_nolen (req->data);
576 req->callback = SvREFCNT_inc (callback);
577
578 send_req (req);
579}
580
581void
582flush()
583 PROTOTYPE:
584 CODE:
585 while (nreqs)
586 {
587 poll_wait (); 1925 poll_wait ();
588 poll_cb (); 1926 RETVAL = poll_cb ();
589 }
590
591void
592poll()
593 PROTOTYPE:
594 CODE:
595 if (nreqs)
596 {
597 poll_wait ();
598 poll_cb ();
599 }
600
601int
602poll_fileno()
603 PROTOTYPE:
604 CODE:
605 RETVAL = respipe [0];
606 OUTPUT: 1927 OUTPUT:
607 RETVAL 1928 RETVAL
608 1929
609int 1930int
1931poll_fileno ()
1932 CODE:
1933 RETVAL = s_epipe_fd (&respipe);
1934 OUTPUT:
1935 RETVAL
1936
1937int
610poll_cb(...) 1938poll_cb (...)
611 PROTOTYPE: 1939 PROTOTYPE:
612 CODE: 1940 CODE:
613 RETVAL = poll_cb (); 1941 RETVAL = poll_cb ();
614 OUTPUT: 1942 OUTPUT:
615 RETVAL 1943 RETVAL
616 1944
617void 1945void
618poll_wait() 1946poll_wait ()
619 PROTOTYPE:
620 CODE: 1947 CODE:
621 if (nreqs)
622 poll_wait (); 1948 poll_wait ();
623 1949
624int 1950int
625nreqs() 1951nreqs ()
626 PROTOTYPE:
627 CODE: 1952 CODE:
628 RETVAL = nreqs; 1953 RETVAL = eio_nreqs ();
629 OUTPUT: 1954 OUTPUT:
630 RETVAL 1955 RETVAL
631 1956
1957int
1958nready ()
1959 CODE:
1960 RETVAL = eio_nready ();
1961 OUTPUT:
1962 RETVAL
1963
1964int
1965npending ()
1966 CODE:
1967 RETVAL = eio_npending ();
1968 OUTPUT:
1969 RETVAL
1970
1971int
1972nthreads ()
1973 CODE:
1974 RETVAL = eio_nthreads ();
1975 OUTPUT:
1976 RETVAL
1977
1978int
1979fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1980 CODE:
1981 RETVAL = posix_fadvise (fh, offset, length, advice);
1982 OUTPUT:
1983 RETVAL
1984
1985IV
1986sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1987 CODE:
1988 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1989 OUTPUT:
1990 RETVAL
1991
1992void
1993mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1994 PPCODE:
1995 sv_clear_foreign (scalar);
1996{
1997 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1998 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1999 if (addr == (void *)-1)
2000 XSRETURN_NO;
2001
2002 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2003
2004 if (!(prot & PROT_WRITE))
2005 SvREADONLY_on (scalar);
2006
2007 XSRETURN_YES;
2008}
2009
2010void
2011munmap (SV *scalar)
2012 CODE:
2013 sv_clear_foreign (scalar);
2014
2015int
2016madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2017 ALIAS:
2018 mprotect = 1
2019 CODE:
2020{
2021 STRLEN svlen;
2022 void *addr = SvPVbyte (scalar, svlen);
2023 STRLEN len = SvUV (length);
2024
2025 if (offset < 0)
2026 offset += svlen;
2027
2028 if (offset < 0 || offset > svlen)
2029 croak ("offset outside of scalar");
2030
2031 if (!SvOK (length) || len + offset > svlen)
2032 len = svlen - offset;
2033
2034 addr = (void *)(((intptr_t)addr) + offset);
2035 eio_page_align (&addr, &len);
2036
2037 switch (ix)
2038 {
2039 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2040 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2041 }
2042}
2043 OUTPUT:
2044 RETVAL
2045
2046int
2047munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2048 CODE:
2049{
2050 STRLEN svlen;
2051 void *addr = SvPVbyte (scalar, svlen);
2052 size_t len = SvUV (length);
2053
2054 if (offset < 0)
2055 offset += svlen;
2056
2057 if (offset < 0 || offset > svlen)
2058 croak ("offset outside of scalar");
2059
2060 if (!SvOK (length) || len + offset > svlen)
2061 len = svlen - offset;
2062
2063 addr = (void *)(((intptr_t)addr) + offset);
2064 eio_page_align (&addr, &len);
2065#if _POSIX_MEMLOCK_RANGE
2066 RETVAL = munlock (addr, len);
2067#else
2068 RETVAL = EIO_ENOSYS ();
2069#endif
2070}
2071 OUTPUT:
2072 RETVAL
2073
2074int
2075munlockall ()
2076 CODE:
2077#if _POSIX_MEMLOCK
2078 munlockall ();
2079#else
2080 RETVAL = EIO_ENOSYS ();
2081#endif
2082 OUTPUT:
2083 RETVAL
2084
2085int
2086splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2087 CODE:
2088{
2089#if HAVE_LINUX_SPLICE
2090 loff_t off_in_, off_out_;
2091 RETVAL = splice (
2092 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2093 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2094 length, flags
2095 );
2096#else
2097 RETVAL = EIO_ENOSYS ();
2098#endif
2099}
2100 OUTPUT:
2101 RETVAL
2102
2103int
2104tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2105 CODE:
2106#if HAVE_LINUX_SPLICE
2107 RETVAL = tee (rfh, wfh, length, flags);
2108#else
2109 RETVAL = EIO_ENOSYS ();
2110#endif
2111 OUTPUT:
2112 RETVAL
2113
2114int
2115pipesize (aio_rfd rfh, int new_size = -1)
2116 PROTOTYPE: $;$
2117 CODE:
2118#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2119 if (new_size >= 0)
2120 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2121 else
2122 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2123#else
2124 errno = ENOSYS;
2125 RETVAL = -1;
2126#endif
2127 OUTPUT:
2128 RETVAL
2129
2130void
2131pipe2 (int flags = 0)
2132 PROTOTYPE: ;$
2133 PPCODE:
2134{
2135 int fd[2];
2136 int res;
2137
2138 if (flags)
2139#if HAVE_PIPE2
2140 res = pipe2 (fd, flags);
2141#else
2142 res = (errno = ENOSYS, -1);
2143#endif
2144 else
2145 res = pipe (fd);
2146
2147 if (!res)
2148 {
2149 EXTEND (SP, 2);
2150 PUSHs (newmortalFH (fd[0], O_RDONLY));
2151 PUSHs (newmortalFH (fd[1], O_WRONLY));
2152 }
2153}
2154
2155UV
2156get_fdlimit ()
2157 CODE:
2158#if HAVE_RLIMITS
2159 struct rlimit rl;
2160 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2161 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2162#endif
2163 XSRETURN_UNDEF;
2164 OUTPUT:
2165 RETVAL
2166
2167void
2168min_fdlimit (UV limit = 0x7fffffffU)
2169 CODE:
2170{
2171#if HAVE_RLIMITS
2172 struct rlimit rl;
2173 rlim_t orig_rlim_max;
2174 UV bit;
2175
2176 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2177 goto fail;
2178
2179 if (rl.rlim_cur == RLIM_INFINITY)
2180 XSRETURN_YES;
2181
2182 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2183
2184 if (rl.rlim_cur < limit)
2185 {
2186 rl.rlim_cur = limit;
2187
2188 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2189 rl.rlim_max = rl.rlim_cur;
2190 }
2191
2192 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2193 XSRETURN_YES;
2194
2195 if (errno == EPERM)
2196 {
2197 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2198 /* our limit overflows a system-wide limit */
2199 /* try an adaptive algorithm, but do not lower the hardlimit */
2200 rl.rlim_max = 0;
2201 for (bit = 0x40000000U; bit; bit >>= 1)
2202 {
2203 rl.rlim_max |= bit;
2204 rl.rlim_cur = rl.rlim_max;
2205
2206 /* nevr decrease the hard limit */
2207 if (rl.rlim_max < orig_rlim_max)
2208 break;
2209
2210 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2211 rl.rlim_max &= ~bit; /* too high, remove bit again */
2212 }
2213
2214 /* now, raise the soft limit to the max permitted */
2215 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2216 {
2217 rl.rlim_cur = rl.rlim_max;
2218 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2219 errno = EPERM;
2220 }
2221 }
2222#endif
2223 fail:
2224 XSRETURN_UNDEF;
2225}
2226
2227void _on_next_submit (SV *cb)
2228 CODE:
2229 SvREFCNT_dec (on_next_submit);
2230 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2231
2232PROTOTYPES: DISABLE
2233
2234MODULE = IO::AIO PACKAGE = IO::AIO::WD
2235
2236BOOT:
2237{
2238 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2239 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2240}
2241
2242void
2243DESTROY (SV *self)
2244 CODE:
2245{
2246 aio_wd wd = SvAIO_WD (self);
2247#if HAVE_AT
2248 {
2249 SV *callback = &PL_sv_undef;
2250 dREQ; /* clobbers next_pri :/ */
2251 next_pri = req->pri; /* restore next_pri */
2252 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2253 req->type = EIO_WD_CLOSE;
2254 req->wd = wd;
2255 REQ_SEND;
2256 }
2257#else
2258 eio_wd_close_sync (wd);
2259#endif
2260}
2261
2262MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2263
2264void
2265cancel (aio_req_ornot req)
2266 CODE:
2267 eio_cancel (req);
2268
2269void
2270cb (aio_req_ornot req, SV *callback = NO_INIT)
2271 PPCODE:
2272{
2273 if (GIMME_V != G_VOID)
2274 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2275
2276 if (items > 1)
2277 {
2278 SV *cb_cv = get_cb (callback);
2279
2280 SvREFCNT_dec (req->callback);
2281 req->callback = SvREFCNT_inc (cb_cv);
2282 }
2283}
2284
2285MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2286
2287void
2288add (aio_req grp, ...)
2289 PPCODE:
2290{
2291 int i;
2292
2293 if (grp->int1 == 2)
2294 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2295
2296 for (i = 1; i < items; ++i )
2297 {
2298 aio_req req;
2299
2300 if (GIMME_V != G_VOID)
2301 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2302
2303 req = SvAIO_REQ (ST (i));
2304
2305 if (req)
2306 eio_grp_add (grp, req);
2307 }
2308}
2309
2310void
2311cancel_subs (aio_req_ornot req)
2312 CODE:
2313 req_cancel_subs (req);
2314
2315void
2316result (aio_req grp, ...)
2317 CODE:
2318{
2319 int i;
2320 AV *av;
2321
2322 grp->errorno = errno;
2323
2324 av = newAV ();
2325 av_extend (av, items - 1);
2326
2327 for (i = 1; i < items; ++i )
2328 av_push (av, newSVsv (ST (i)));
2329
2330 SvREFCNT_dec (grp->sv1);
2331 grp->sv1 = (SV *)av;
2332}
2333
2334void
2335errno (aio_req grp, int errorno = errno)
2336 CODE:
2337 grp->errorno = errorno;
2338
2339void
2340limit (aio_req grp, int limit)
2341 CODE:
2342 eio_grp_limit (grp, limit);
2343
2344void
2345feed (aio_req grp, SV *callback = &PL_sv_undef)
2346 CODE:
2347{
2348 SvREFCNT_dec (grp->sv2);
2349 grp->sv2 = newSVsv (callback);
2350 grp->feed = aio_grp_feed;
2351
2352 if (grp->int2 <= 0)
2353 grp->int2 = 2;
2354
2355 eio_grp_limit (grp, grp->int2);
2356}
2357

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