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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.109 by root, Sat Oct 6 14:05:19 2007 UTC vs.
Revision 1.232 by root, Sat Jun 13 00:06:13 2015 UTC

1#include "xthread.h" 1#include "libeio/xthread.h"
2 2
3#include <errno.h> 3#include <errno.h>
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8
9#include "schmorp.h"
8 10
9#include <stddef.h> 11#include <stddef.h>
10#include <stdlib.h> 12#include <stdlib.h>
11#include <errno.h> 13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14#include <limits.h> 16#include <limits.h>
15#include <fcntl.h> 17#include <fcntl.h>
16#include <sched.h> 18#include <sched.h>
17 19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
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. on't complain if this fails for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
18#ifdef _WIN32 46#ifdef _WIN32
19 47
20# define SIGIO 0 48 // perl overrides all those nice libc functions
21 typedef Direntry_t X_DIRENT; 49
22#undef malloc 50 #undef malloc
23#undef free 51 #undef free
24
25// perl overrides all those nice win32 functions
26# undef open 52 #undef open
27# undef read 53 #undef read
28# undef write 54 #undef write
29# undef send 55 #undef send
30# undef recv 56 #undef recv
31# undef stat 57 #undef stat
58 #undef lstat
32# undef fstat 59 #undef fstat
33# define lstat stat
34# undef truncate 60 #undef truncate
35# undef ftruncate 61 #undef ftruncate
36# undef open 62 #undef open
63 #undef link
37# undef close 64 #undef close
38# undef unlink 65 #undef unlink
66 #undef mkdir
39# undef rmdir 67 #undef rmdir
40# undef rename 68 #undef rename
41# undef lseek 69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
42 79
43# define chown(a,b,c) (errno = ENOSYS, -1) 80 #define EIO_STRUCT_STAT struct _stati64
44# define fchown(a,b,c) (errno = ENOSYS, -1) 81 #define EIO_STRUCT_STATI64
45# define fchmod(a,b) (errno = ENOSYS, -1)
46# define symlink(a,b) (errno = ENOSYS, -1)
47# define readlink(a,b,c) (errno = ENOSYS, -1)
48# define mknod(a,b,c) (errno = ENOSYS, -1)
49# define truncate(a,b) (errno = ENOSYS, -1)
50# define ftruncate(fd,o) chsize ((fd), (o))
51# define fsync(fd) _commit (fd)
52# define opendir(fd) (errno = ENOSYS, 0)
53# define readdir(fd) (errno = ENOSYS, -1)
54# define closedir(fd) (errno = ENOSYS, -1)
55# define mkdir(a,b) mkdir (a)
56 82
57#else 83#else
58 84
59# include "autoconf/config.h"
60# include <sys/time.h> 85 #include <sys/time.h>
61# include <sys/select.h> 86 #include <sys/select.h>
62# include <unistd.h> 87 #include <unistd.h>
63# include <utime.h> 88 #include <utime.h>
64# include <signal.h> 89 #include <signal.h>
65 typedef struct dirent X_DIRENT;
66 90
67#endif 91 #define EIO_STRUCT_STAT Stat_t
68 92
69#if HAVE_SENDFILE 93#endif
70# if __linux 94
71# include <sys/sendfile.h> 95/*****************************************************************************/
72# elif __freebsd 96
73# include <sys/socket.h> 97#if __GNUC__ >= 3
74# include <sys/uio.h> 98# define expect(expr,value) __builtin_expect ((expr),(value))
75# elif __hpux 99#else
76# include <sys/socket.h> 100# define expect(expr,value) (expr)
77# elif __solaris /* not yet */ 101#endif
78# include <sys/sendfile.h> 102
103#define expect_false(expr) expect ((expr) != 0, 0)
104#define expect_true(expr) expect ((expr) != 0, 1)
105
106/*****************************************************************************/
107
108typedef SV SV8; /* byte-sv, used for argument-checking */
109typedef int aio_rfd; /* read file desriptor */
110typedef int aio_wfd; /* write file descriptor */
111
112static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
113
114#define EIO_REQ_MEMBERS \
115 SV *callback; \
116 SV *sv1, *sv2; \
117 SV *sv3, *sv4; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/config.h"
124#include "libeio/eio.h"
125
126static int req_invoke (eio_req *req);
127#define EIO_FINISH(req) req_invoke (req)
128static void req_destroy (eio_req *grp);
129#define EIO_DESTROY(req) req_destroy (req)
130
131#include "libeio/eio.c"
132
133#if !HAVE_POSIX_FADVISE
134# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#if !HAVE_POSIX_MADVISE
138# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
139#endif
140
141#ifndef MAP_ANONYMOUS
142# ifdef MAP_ANON
143# define MAP_ANONYMOUS MAP_ANON
79# else 144# else
80# error sendfile support requested but not available 145# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81# endif 146# endif
82#endif 147#endif
83 148
84/* number of seconds after which idle threads exit */ 149/* defines all sorts of constants to 0 unless they are already defined */
85#define IDLE_TIMEOUT 10 150#include "def0.h"
86 151
87/* used for struct dirent, AIX doesn't provide it */ 152#ifndef makedev
88#ifndef NAME_MAX 153# define makedev(maj,min) (((maj) << 8) | (min))
89# define NAME_MAX 4096
90#endif 154#endif
91 155#ifndef major
92/* buffer size for various temporary buffers */ 156# define major(dev) ((dev) >> 8)
93#define AIO_BUFSIZE 65536
94
95/* use NV for 32 bit perls as it allows larger offsets */
96#if IVSIZE >= 8
97# define SvVAL64 SvIV
98#else
99# define SvVAL64 SvNV
100#endif 157#endif
158#ifndef minor
159# define minor(dev) ((dev) & 0xff)
160#endif
101 161
102static HV *stash; 162#if PAGESIZE <= 0
163# define PAGESIZE sysconf (_SC_PAGESIZE)
164#endif
103 165
104#define dBUF \ 166/*****************************************************************************/
105 char *aio_buf; \
106 X_LOCK (wrklock); \
107 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
108 X_UNLOCK (wrklock); \
109 if (!aio_buf) \
110 return -1;
111 167
112typedef SV SV8; /* byte-sv, used for argument-checking */ 168static void
113 169fiemap (eio_req *req)
114enum {
115 REQ_QUIT,
116 REQ_OPEN, REQ_CLOSE,
117 REQ_READ, REQ_WRITE,
118 REQ_READAHEAD, REQ_SENDFILE,
119 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120 REQ_TRUNCATE, REQ_FTRUNCATE,
121 REQ_UTIME, REQ_FUTIME,
122 REQ_CHMOD, REQ_FCHMOD,
123 REQ_CHOWN, REQ_FCHOWN,
124 REQ_FSYNC, REQ_FDATASYNC,
125 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126 REQ_MKNOD, REQ_READDIR,
127 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128 REQ_GROUP, REQ_NOP,
129 REQ_BUSY,
130};
131
132#define AIO_REQ_KLASS "IO::AIO::REQ"
133#define AIO_GRP_KLASS "IO::AIO::GRP"
134
135typedef struct aio_cb
136{ 170{
137 struct aio_cb *volatile next; 171 req->result = -1;
138 172
139 SV *callback; 173#if HAVE_FIEMAP
140 SV *sv1, *sv2; 174 /* assume some c99 */
141 void *ptr1, *ptr2; 175 struct fiemap *fiemap = 0;
142 off_t offs; 176 size_t end_offset;
143 size_t size; 177 int count = req->int3;
144 ssize_t result;
145 double nv1, nv2;
146 178
147 STRLEN stroffset; 179 req->flags |= EIO_FLAG_PTR1_FREE;
148 int type;
149 int int1, int2, int3;
150 int errorno;
151 mode_t mode; /* open */
152 180
153 unsigned char flags; 181 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
154 unsigned char pri; 182 /* increase in 3.5kb steps */
183 if (count < 0)
184 count = 8;
155 185
156 SV *self; /* the perl counterpart of this request, if any */ 186 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
157 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 187 errno = ENOMEM;
158} aio_cb; 188 if (!fiemap)
159
160enum {
161 FLAG_CANCELLED = 0x01, /* request was cancelled */
162 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164};
165
166typedef aio_cb *aio_req;
167typedef aio_cb *aio_req_ornot;
168
169enum {
170 PRI_MIN = -4,
171 PRI_MAX = 4,
172
173 DEFAULT_PRI = 0,
174 PRI_BIAS = -PRI_MIN,
175 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176};
177
178#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180static unsigned int max_poll_time = 0;
181static unsigned int max_poll_reqs = 0;
182
183/* calculcate time difference in ~1/AIO_TICKS of a second */
184static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185{
186 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
188}
189
190static thread_t main_tid;
191static int main_sig;
192static int block_sig_level;
193
194void block_sig ()
195{
196 sigset_t ss;
197
198 if (block_sig_level++)
199 return; 189 return;
200 190
201 if (!main_sig) 191 req->ptr1 = fiemap;
192
193 fiemap->fm_start = req->offs;
194 fiemap->fm_length = req->size;
195 fiemap->fm_flags = req->int2;
196 fiemap->fm_extent_count = count;
197
198 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
202 return; 199 return;
203 200
204 sigemptyset (&ss); 201 if (req->int3 >= 0 /* not autosizing */
205 sigaddset (&ss, main_sig); 202 || !fiemap->fm_mapped_extents /* no more extents */
206 pthread_sigmask (SIG_BLOCK, &ss, 0); 203 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207} 204 goto done;
208 205
209void unblock_sig () 206 /* else we have to loop -
210{ 207 * it would be tempting (actually I tried that first) to just query the
211 sigset_t ss; 208 * number of extents needed, but linux often feels like not returning all
209 * extents, without telling us it left any out. this complicates
210 * this quite a bit.
211 */
212 212
213 if (--block_sig_level) 213 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214 return;
215 214
216 if (!main_sig) 215 for (;;)
217 return;
218
219 sigemptyset (&ss);
220 sigaddset (&ss, main_sig);
221 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222}
223
224static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226static unsigned int started, idle, wanted;
227
228/* worker threads management */
229static mutex_t wrklock = X_MUTEX_INIT;
230
231typedef struct worker {
232 /* locked by wrklock */
233 struct worker *prev, *next;
234
235 thread_t tid;
236
237 /* locked by reslock, reqlock or wrklock */
238 aio_req req; /* currently processed request */
239 void *dbuf;
240 DIR *dirp;
241} worker;
242
243static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245static void worker_clear (worker *wrk)
246{
247 if (wrk->dirp)
248 { 216 {
249 closedir (wrk->dirp); 217 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
250 wrk->dirp = 0; 218 char scratch[3072];
251 } 219 struct fiemap *incmap = (struct fiemap *)scratch;
252 220
253 if (wrk->dbuf) 221 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254 { 222 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255 free (wrk->dbuf); 223 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256 wrk->dbuf = 0; 224 incmap->fm_flags = fiemap->fm_flags;
257 } 225 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258}
259 226
260static void worker_free (worker *wrk) 227 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
261{
262 wrk->next->prev = wrk->prev;
263 wrk->prev->next = wrk->next;
264
265 free (wrk);
266}
267
268static volatile unsigned int nreqs, nready, npending;
269static volatile unsigned int max_idle = 4;
270static volatile unsigned int max_outstanding = 0xffffffff;
271static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273static mutex_t reslock = X_MUTEX_INIT;
274static mutex_t reqlock = X_MUTEX_INIT;
275static cond_t reqwait = X_COND_INIT;
276
277#if WORDACCESS_UNSAFE
278
279static unsigned int get_nready ()
280{
281 unsigned int retval;
282
283 X_LOCK (reqlock);
284 retval = nready;
285 X_UNLOCK (reqlock);
286
287 return retval;
288}
289
290static unsigned int get_npending ()
291{
292 unsigned int retval;
293
294 X_LOCK (reslock);
295 retval = npending;
296 X_UNLOCK (reslock);
297
298 return retval;
299}
300
301static unsigned int get_nthreads ()
302{
303 unsigned int retval;
304
305 X_LOCK (wrklock);
306 retval = started;
307 X_UNLOCK (wrklock);
308
309 return retval;
310}
311
312#else
313
314# define get_nready() nready
315# define get_npending() npending
316# define get_nthreads() started
317
318#endif
319
320/*
321 * a somewhat faster data structure might be nice, but
322 * with 8 priorities this actually needs <20 insns
323 * per shift, the most expensive operation.
324 */
325typedef struct {
326 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327 int size;
328} reqq;
329
330static reqq req_queue;
331static reqq res_queue;
332
333int reqq_push (reqq *q, aio_req req)
334{
335 int pri = req->pri;
336 req->next = 0;
337
338 if (q->qe[pri])
339 {
340 q->qe[pri]->next = req;
341 q->qe[pri] = req;
342 }
343 else
344 q->qe[pri] = q->qs[pri] = req;
345
346 return q->size++;
347}
348
349aio_req reqq_shift (reqq *q)
350{
351 int pri;
352
353 if (!q->size)
354 return 0; 228 return;
355 229
356 --q->size; 230 if (!incmap->fm_mapped_extents)
231 goto done;
357 232
358 for (pri = NUM_PRI; pri--; ) 233 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359 { 234 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360 aio_req req = q->qs[pri]; 235 errno = ENOMEM;
361
362 if (req) 236 if (!fiemap)
237 return;
238
239 req->ptr1 = fiemap;
240
241 for (count = 0; count < incmap->fm_mapped_extents; ++count)
363 { 242 {
364 if (!(q->qs[pri] = req->next)) 243 struct fiemap_extent *e = incmap->fm_extents + count;
365 q->qe[pri] = 0;
366 244
367 return req; 245 if (e->fe_logical + e->fe_length >= end_offset)
246 goto done;
247
248 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
249
250 if (e->fe_flags & FIEMAP_EXTENT_LAST)
251 goto done;
252
368 } 253 }
369 } 254 }
370 255
371 abort (); 256done:
372} 257 req->result = 0;
373 258
374static int poll_cb (); 259#else
375static int req_invoke (aio_req req); 260 errno = ENOSYS;
261#endif
262}
263
264/*****************************************************************************/
265
266enum {
267 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
268};
269
270typedef eio_req *aio_req;
271typedef eio_req *aio_req_ornot;
272typedef eio_wd aio_wd;
273
274static SV *on_next_submit;
275static int next_pri = EIO_PRI_DEFAULT;
276static int max_outstanding;
277
278static s_epipe respipe;
279
376static void req_destroy (aio_req req); 280static void req_destroy (aio_req req);
377static void req_cancel (aio_req req); 281static void req_cancel (aio_req req);
378 282
283static void
284want_poll (void)
285{
286 /* write a dummy byte to the pipe so fh becomes ready */
287 s_epipe_signal (&respipe);
288}
289
290static void
291done_poll (void)
292{
293 /* read any signals sent by the worker threads */
294 s_epipe_drain (&respipe);
295}
296
379/* must be called at most once */ 297/* must be called at most once */
380static SV *req_sv (aio_req req, const char *klass) 298static SV *
299req_sv (aio_req req, HV *stash)
381{ 300{
382 if (!req->self) 301 if (!req->self)
383 { 302 {
384 req->self = (SV *)newHV (); 303 req->self = (SV *)newHV ();
385 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386 } 305 }
387 306
388 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 307 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389} 308}
390 309
391static aio_req SvAIO_REQ (SV *sv) 310static SV *
311newSVaio_wd (aio_wd wd)
312{
313 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
314}
315
316static aio_req
317SvAIO_REQ (SV *sv)
392{ 318{
393 MAGIC *mg; 319 MAGIC *mg;
394 320
395 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 321 if (!SvROK (sv)
322 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
323 || (SvSTASH (SvRV (sv)) != aio_grp_stash
324 && SvSTASH (SvRV (sv)) != aio_req_stash
325 && !sv_derived_from (sv, "IO::AIO::REQ")))
396 croak ("object of class " AIO_REQ_KLASS " expected"); 326 croak ("object of class IO::AIO::REQ expected");
397 327
398 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 328 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399 329
400 return mg ? (aio_req)mg->mg_ptr : 0; 330 return mg ? (aio_req)mg->mg_ptr : 0;
401} 331}
402 332
333static aio_wd
334SvAIO_WD (SV *sv)
335{
336 if (!SvROK (sv)
337 || SvTYPE (SvRV (sv)) != SVt_PVMG
338 || SvSTASH (SvRV (sv)) != aio_wd_stash)
339 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
340
341 return (aio_wd)(long)SvIVX (SvRV (sv));
342}
343
344static void
403static void aio_grp_feed (aio_req grp) 345aio_grp_feed (aio_req grp)
404{ 346{
405 block_sig (); 347 if (grp->sv2 && SvOK (grp->sv2))
406
407 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408 { 348 {
409 int old_len = grp->size;
410
411 if (grp->sv2 && SvOK (grp->sv2))
412 {
413 dSP; 349 dSP;
414 350
415 ENTER; 351 ENTER;
416 SAVETMPS; 352 SAVETMPS;
417 PUSHMARK (SP); 353 PUSHMARK (SP);
418 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 354 XPUSHs (req_sv (grp, aio_grp_stash));
419 PUTBACK; 355 PUTBACK;
420 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 356 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421 SPAGAIN; 357 SPAGAIN;
422 FREETMPS; 358 FREETMPS;
423 LEAVE; 359 LEAVE;
424 }
425
426 /* stop if no progress has been made */
427 if (old_len == grp->size)
428 {
429 SvREFCNT_dec (grp->sv2);
430 grp->sv2 = 0;
431 break;
432 }
433 } 360 }
434
435 unblock_sig ();
436} 361}
437 362
438static void aio_grp_dec (aio_req grp) 363static void
364req_submit (eio_req *req)
439{ 365{
440 --grp->size; 366 eio_submit (req);
441 367
442 /* call feeder, if applicable */ 368 if (expect_false (on_next_submit))
443 aio_grp_feed (grp);
444
445 /* finish, if done */
446 if (!grp->size && grp->int1)
447 { 369 {
448 block_sig (); 370 dSP;
371 SV *cb = sv_2mortal (on_next_submit);
449 372
450 if (!req_invoke (grp)) 373 on_next_submit = 0;
451 {
452 req_destroy (grp);
453 unblock_sig ();
454 croak (0);
455 }
456 374
457 req_destroy (grp); 375 PUSHMARK (SP);
458 unblock_sig (); 376 PUTBACK;
377 call_sv (cb, G_DISCARD | G_EVAL);
459 } 378 }
460} 379}
461 380
381static int
462static int req_invoke (aio_req req) 382req_invoke (eio_req *req)
463{ 383{
464 dSP;
465
466 if (req->flags & FLAG_SV2_RO_OFF) 384 if (req->flags & FLAG_SV2_RO_OFF)
467 SvREADONLY_off (req->sv2); 385 SvREADONLY_off (req->sv2);
468 386
469 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 387 if (!EIO_CANCELLED (req) && req->callback)
470 { 388 {
389 dSP;
390 static SV *sv_result_cache; /* caches the result integer SV */
391 SV *sv_result;
392
471 ENTER; 393 ENTER;
472 SAVETMPS; 394 SAVETMPS;
473 PUSHMARK (SP); 395 PUSHMARK (SP);
474 EXTEND (SP, 1); 396 EXTEND (SP, 1);
475 397
398 /* do not recreate the result IV from scratch each time */
399 if (expect_true (sv_result_cache))
400 {
401 sv_result = sv_result_cache; sv_result_cache = 0;
402 SvIV_set (sv_result, req->result);
403 SvIOK_only (sv_result);
404 }
405 else
406 {
407 sv_result = newSViv (req->result);
408 SvREADONLY_on (sv_result);
409 }
410
476 switch (req->type) 411 switch (req->type)
477 { 412 {
413 case EIO_WD_OPEN:
414 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
415 break;
416
478 case REQ_READDIR: 417 case EIO_READDIR:
479 { 418 {
480 SV *rv = &PL_sv_undef; 419 SV *rv = &PL_sv_undef;
481 420
482 if (req->result >= 0) 421 if (req->result >= 0)
483 { 422 {
484 int i; 423 int i;
485 char *buf = req->ptr2; 424 char *names = (char *)req->ptr2;
425 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486 AV *av = newAV (); 426 AV *av = newAV ();
487 427
488 av_extend (av, req->result - 1); 428 av_extend (av, req->result - 1);
489 429
490 for (i = 0; i < req->result; ++i) 430 for (i = 0; i < req->result; ++i)
491 { 431 {
492 SV *sv = newSVpv (buf, 0); 432 if (req->int1 & EIO_READDIR_DENTS)
433 {
434 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493 435
436 if (req->int1 & EIO_READDIR_CUSTOM2)
437 {
438 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
439 AV *avent = newAV ();
440
441 av_extend (avent, 2);
442
443 if (!sv_type [ent->type])
444 {
445 sv_type [ent->type] = newSViv (ent->type);
446 SvREADONLY_on (sv_type [ent->type]);
447 }
448
449 av_store (avent, 0, namesv);
450 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
451 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
452
453 av_store (av, i, newRV_noinc ((SV *)avent));
454 }
455 else
494 av_store (av, i, sv); 456 av_store (av, i, namesv);
457
458 ++ent;
459 }
460 else
461 {
462 SV *name = newSVpv (names, 0);
463 av_store (av, i, name);
495 buf += SvCUR (sv) + 1; 464 names += SvCUR (name) + 1;
465 }
496 } 466 }
497 467
498 rv = sv_2mortal (newRV_noinc ((SV *)av)); 468 rv = sv_2mortal (newRV_noinc ((SV *)av));
499 } 469 }
500 470
501 PUSHs (rv); 471 PUSHs (rv);
472
473 if (req->int1 & EIO_READDIR_CUSTOM1)
474 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502 } 475 }
503 break; 476 break;
504 477
505 case REQ_OPEN: 478 case EIO_OPEN:
506 { 479 {
507 /* convert fd to fh */ 480 /* convert fd to fh */
508 SV *fh = &PL_sv_undef; 481 SV *fh = &PL_sv_undef;
509 482
510 if (req->result >= 0) 483 if (req->result >= 0)
… …
512 GV *gv = (GV *)sv_newmortal (); 485 GV *gv = (GV *)sv_newmortal ();
513 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR); 486 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514 char sym [64]; 487 char sym [64];
515 int symlen; 488 int symlen;
516 489
517 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result); 490 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518 gv_init (gv, stash, sym, symlen, 0); 491 gv_init (gv, aio_stash, sym, symlen, 0);
519 492
520 symlen = snprintf ( 493 symlen = snprintf (
521 sym, 494 sym,
522 sizeof (sym), 495 sizeof (sym),
523 "%s&=%d", 496 "%s&=%d",
524 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<", 497 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525 req->result 498 (int)req->result
526 ); 499 );
527 500
528 if (do_open (gv, sym, symlen, 0, 0, 0, 0)) 501 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529 fh = (SV *)gv; 502 fh = (SV *)gv;
530 } 503 }
531 504
532 PUSHs (fh); 505 PUSHs (fh);
533 } 506 }
534 break; 507 break;
535 508
509 case EIO_STATVFS:
510 case EIO_FSTATVFS:
511 {
512 SV *rv = &PL_sv_undef;
513
514#ifndef _WIN32
515 if (req->result >= 0)
516 {
517 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
518 HV *hv = newHV ();
519 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
520 * chooses to make it a struct.
521 */
522 unsigned long fsid = 0;
523 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
524
525 rv = sv_2mortal (newRV_noinc ((SV *)hv));
526
527 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
528 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
529 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
530 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
531 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
532 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
533 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
534 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
535 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
536 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
537 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
538 }
539#endif
540
541 PUSHs (rv);
542 }
543
544 break;
545
536 case REQ_GROUP: 546 case EIO_GROUP:
537 req->int1 = 2; /* mark group as finished */ 547 req->int1 = 2; /* mark group as finished */
538 548
539 if (req->sv1) 549 if (req->sv1)
540 { 550 {
541 int i; 551 int i;
… …
545 for (i = 0; i <= AvFILL (av); ++i) 555 for (i = 0; i <= AvFILL (av); ++i)
546 PUSHs (*av_fetch (av, i, 0)); 556 PUSHs (*av_fetch (av, i, 0));
547 } 557 }
548 break; 558 break;
549 559
550 case REQ_NOP: 560 case EIO_NOP:
551 case REQ_BUSY: 561 case EIO_BUSY:
552 break; 562 break;
553 563
554 case REQ_READLINK: 564 case EIO_READLINK:
565 case EIO_REALPATH:
555 if (req->result > 0) 566 if (req->result > 0)
567 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
568 break;
569
570 case EIO_STAT:
571 case EIO_LSTAT:
572 case EIO_FSTAT:
573 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
574
575 if (!(PL_laststatval = req->result))
576 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
577 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
578
579 PUSHs (sv_result);
580 break;
581
582 case EIO_SEEK:
583 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
584 break;
585
586 case EIO_READ:
587 {
588 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
589 *SvEND (req->sv2) = 0;
590 SvPOK_only (req->sv2);
591 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result);
593 }
594 break;
595
596 case EIO_CUSTOM:
597 if (req->feed == fiemap)
556 { 598 {
557 SvCUR_set (req->sv2, req->result); 599#if HAVE_FIEMAP
558 *SvEND (req->sv2) = 0;
559 PUSHs (req->sv2); 600 if (!req->result)
601 {
602 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
603
604 if (fiemap->fm_extent_count)
605 {
606 AV *av = newAV ();
607 int i;
608
609 while (fiemap->fm_mapped_extents)
610 {
611 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
612 AV *ext_av = newAV ();
613
614 av_store (ext_av, 3, newSVuv (extent->fe_flags));
615 av_store (ext_av, 2, newSVval64 (extent->fe_length));
616 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
617 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
618
619 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
620 }
621
622 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
623 }
624 else
625 {
626 SvIV_set (sv_result, fiemap->fm_mapped_extents);
627 PUSHs (sv_result);
628 }
629 }
630#endif
560 } 631 }
632 else
633 PUSHs (sv_result);
561 break; 634 break;
562 635
563 case REQ_STAT: 636 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564 case REQ_LSTAT: 637 if (req->result > 0)
565 case REQ_FSTAT: 638 SvIV_set (sv_result, 0);
566 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 639 /* FALLTHROUGH */
567 PL_laststatval = req->result;
568 PL_statcache = *(Stat_t *)(req->ptr2);
569 PUSHs (sv_2mortal (newSViv (req->result)));
570 break;
571
572 case REQ_READ:
573 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574 *SvEND (req->sv2) = 0;
575 PUSHs (sv_2mortal (newSViv (req->result)));
576 break;
577 640
578 default: 641 default:
579 PUSHs (sv_2mortal (newSViv (req->result))); 642 PUSHs (sv_result);
580 break; 643 break;
581 } 644 }
582 645
583 errno = req->errorno; 646 errno = req->errorno;
584 647
585 PUTBACK; 648 PUTBACK;
586 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); 649 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587 SPAGAIN; 650 SPAGAIN;
588 651
652 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
653 SvREFCNT_dec (sv_result);
654 else
655 sv_result_cache = sv_result;
656
589 FREETMPS; 657 FREETMPS;
590 LEAVE; 658 LEAVE;
591 659
592 PUTBACK; 660 PUTBACK;
593 } 661 }
594 662
595 if (req->grp)
596 {
597 aio_req grp = req->grp;
598
599 /* unlink request */
600 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603 if (grp->grp_first == req)
604 grp->grp_first = req->grp_next;
605
606 aio_grp_dec (grp);
607 }
608
609 return !SvTRUE (ERRSV); 663 return !!SvTRUE (ERRSV);
610} 664}
611 665
666static void
612static void req_destroy (aio_req req) 667req_destroy (aio_req req)
613{ 668{
614 if (req->self) 669 if (req->self)
615 { 670 {
616 sv_unmagic (req->self, PERL_MAGIC_ext); 671 sv_unmagic (req->self, PERL_MAGIC_ext);
617 SvREFCNT_dec (req->self); 672 SvREFCNT_dec (req->self);
618 } 673 }
619 674
620 SvREFCNT_dec (req->sv1); 675 SvREFCNT_dec (req->sv1);
621 SvREFCNT_dec (req->sv2); 676 SvREFCNT_dec (req->sv2);
677 SvREFCNT_dec (req->sv3);
678 SvREFCNT_dec (req->sv4);
622 SvREFCNT_dec (req->callback); 679 SvREFCNT_dec (req->callback);
623 680
624 if (req->flags & FLAG_PTR2_FREE)
625 free (req->ptr2);
626
627 Safefree (req); 681 free (req);
628} 682}
629 683
684static void
630static void req_cancel_subs (aio_req grp) 685req_cancel_subs (aio_req grp)
631{ 686{
632 aio_req sub;
633
634 if (grp->type != REQ_GROUP) 687 if (grp->type != EIO_GROUP)
635 return; 688 return;
636 689
637 SvREFCNT_dec (grp->sv2); 690 SvREFCNT_dec (grp->sv2);
638 grp->sv2 = 0; 691 grp->sv2 = 0;
639 692
640 for (sub = grp->grp_first; sub; sub = sub->grp_next) 693 eio_grp_cancel (grp);
641 req_cancel (sub);
642} 694}
643 695
644static void req_cancel (aio_req req) 696static void ecb_cold
697create_respipe (void)
645{ 698{
646 req->flags |= FLAG_CANCELLED; 699 if (s_epipe_renew (&respipe))
647 700 croak ("IO::AIO: unable to initialize result pipe");
648 req_cancel_subs (req);
649} 701}
650
651#ifdef USE_SOCKETS_AS_HANDLES
652# define TO_SOCKET(x) (win32_get_osfhandle (x))
653#else
654# define TO_SOCKET(x) (x)
655#endif
656 702
657static void 703static void
658create_respipe () 704poll_wait (void)
659{ 705{
660 int old_readfd = respipe [0];
661
662 if (respipe [1] >= 0)
663 respipe_close (TO_SOCKET (respipe [1]));
664
665#ifdef _WIN32
666 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667#else
668 if (pipe (respipe))
669#endif
670 croak ("unable to initialize result pipe");
671
672 if (old_readfd >= 0)
673 {
674 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675 croak ("unable to initialize result pipe(2)");
676
677 respipe_close (respipe [0]);
678 respipe [0] = old_readfd;
679 }
680
681#ifdef _WIN32
682 int arg = 1;
683 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685#else
686 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688#endif
689 croak ("unable to initialize result pipe(3)");
690
691 respipe_osf [0] = TO_SOCKET (respipe [0]);
692 respipe_osf [1] = TO_SOCKET (respipe [1]);
693}
694
695X_THREAD_PROC (aio_proc);
696
697static void start_thread (void)
698{
699 worker *wrk = calloc (1, sizeof (worker));
700
701 if (!wrk)
702 croak ("unable to allocate worker thread data");
703
704 X_LOCK (wrklock);
705
706 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707 {
708 wrk->prev = &wrk_first;
709 wrk->next = wrk_first.next;
710 wrk_first.next->prev = wrk;
711 wrk_first.next = wrk;
712 ++started;
713 }
714 else
715 free (wrk);
716
717 X_UNLOCK (wrklock);
718}
719
720static void maybe_start_thread ()
721{
722 if (get_nthreads () >= wanted)
723 return;
724
725 /* todo: maybe use idle here, but might be less exact */
726 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727 return;
728
729 start_thread ();
730}
731
732static void req_send (aio_req req)
733{
734 block_sig ();
735
736 ++nreqs;
737
738 X_LOCK (reqlock);
739 ++nready;
740 reqq_push (&req_queue, req);
741 X_COND_SIGNAL (reqwait);
742 X_UNLOCK (reqlock);
743
744 unblock_sig ();
745
746 maybe_start_thread ();
747}
748
749static void end_thread (void)
750{
751 aio_req req;
752
753 Newz (0, req, 1, aio_cb);
754
755 req->type = REQ_QUIT;
756 req->pri = PRI_MAX + PRI_BIAS;
757
758 X_LOCK (reqlock);
759 reqq_push (&req_queue, req);
760 X_COND_SIGNAL (reqwait);
761 X_UNLOCK (reqlock);
762
763 X_LOCK (wrklock);
764 --started;
765 X_UNLOCK (wrklock);
766}
767
768static void set_max_idle (int nthreads)
769{
770 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771 max_idle = nthreads <= 0 ? 1 : nthreads;
772 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773}
774
775static void min_parallel (int nthreads)
776{
777 if (wanted < nthreads)
778 wanted = nthreads;
779}
780
781static void max_parallel (int nthreads)
782{
783 if (wanted > nthreads)
784 wanted = nthreads;
785
786 while (started > wanted)
787 end_thread ();
788}
789
790static void poll_wait ()
791{
792 fd_set rfd;
793
794 while (nreqs) 706 while (eio_nreqs ())
795 { 707 {
796 int size; 708 int size;
797 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 709
710 X_LOCK (reslock);
798 size = res_queue.size; 711 size = res_queue.size;
799 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 712 X_UNLOCK (reslock);
800 713
801 if (size) 714 if (size)
802 return; 715 return;
803 716
804 maybe_start_thread (); 717 etp_maybe_start_thread ();
805 718
806 FD_ZERO (&rfd); 719 s_epipe_wait (&respipe);
807 FD_SET (respipe [0], &rfd);
808
809 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810 } 720 }
811} 721}
812 722
813static int poll_cb () 723static int
724poll_cb (void)
814{ 725{
815 dSP;
816 int count = 0;
817 int maxreqs = max_poll_reqs;
818 int do_croak = 0;
819 struct timeval tv_start, tv_now;
820 aio_req req;
821
822 if (max_poll_time)
823 gettimeofday (&tv_start, 0);
824
825 block_sig ();
826
827 for (;;) 726 for (;;)
828 { 727 {
829 for (;;) 728 int res = eio_poll ();
729
730 if (res > 0)
731 croak (0);
732
733 if (!max_outstanding || max_outstanding > eio_nreqs ())
734 return res;
735
736 poll_wait ();
737 }
738}
739
740static void ecb_cold
741reinit (void)
742{
743 create_respipe ();
744
745 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library");
747}
748
749/*****************************************************************************/
750
751#if !_POSIX_MAPPED_FILES
752# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753# define munmap(addr,length) EIO_ENOSYS ()
754#endif
755
756#if !_POSIX_MEMORY_PROTECTION
757# define mprotect(addr,len,prot) EIO_ENOSYS ()
758# define PROT_NONE 0
759# define PROT_WRITE 0
760# define MAP_PRIVATE 0
761# define MAP_SHARED 0
762# define MAP_FIXED 0
763#endif
764
765#define MMAP_MAGIC PERL_MAGIC_ext
766
767static int ecb_cold
768mmap_free (pTHX_ SV *sv, MAGIC *mg)
769{
770 int old_errno = errno;
771 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
772 errno = old_errno;
773
774 mg->mg_obj = 0; /* just in case */
775
776 SvREADONLY_off (sv);
777
778 if (SvPVX (sv) != mg->mg_ptr)
779 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
780
781 SvCUR_set (sv, 0);
782 SvPVX (sv) = 0;
783 SvOK_off (sv);
784
785 return 0;
786}
787
788static MGVTBL mmap_vtbl = {
789 0, 0, 0, 0, mmap_free
790};
791
792/*****************************************************************************/
793
794static SV *
795get_cb (SV *cb_sv)
796{
797 SvGETMAGIC (cb_sv);
798 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
799}
800
801static aio_req ecb_noinline
802dreq (SV *callback)
803{
804 SV *cb_cv;
805 aio_req req;
806 int req_pri = next_pri;
807 next_pri = EIO_PRI_DEFAULT;
808
809 cb_cv = get_cb (callback);
810
811 req = calloc (sizeof (*req), 1);
812 if (!req)
813 croak ("out of memory during eio_req allocation");
814
815 req->callback = SvREFCNT_inc (cb_cv);
816 req->pri = req_pri;
817
818 return req;
819}
820
821#define dREQ \
822 aio_req req = dreq (callback); \
823
824#define REQ_SEND \
825 PUTBACK; \
826 req_submit (req); \
827 SPAGAIN; \
828 \
829 if (GIMME_V != G_VOID) \
830 XPUSHs (req_sv (req, aio_req_stash));
831
832ecb_inline void
833req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
834{
835 if (expect_false (SvROK (path)))
836 {
837 SV *rv = SvRV (path);
838 SV *wdob;
839
840 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
830 { 841 {
831 maybe_start_thread (); 842 path = AvARRAY (rv)[1];
843 wdob = AvARRAY (rv)[0];
832 844
833 X_LOCK (reslock); 845 if (SvOK (wdob))
834 req = reqq_shift (&res_queue);
835
836 if (req)
837 { 846 {
838 --npending; 847 *wd = SvAIO_WD (wdob);
839 848 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
840 if (!res_queue.size)
841 {
842 /* read any signals sent by the worker threads */
843 char buf [4];
844 while (respipe_read (respipe [0], buf, 4) == 4)
845 ;
846 }
847 }
848
849 X_UNLOCK (reslock);
850
851 if (!req)
852 break;
853
854 --nreqs;
855
856 if (req->type == REQ_GROUP && req->size)
857 {
858 req->int1 = 1; /* mark request as delayed */
859 continue;
860 } 849 }
861 else 850 else
862 { 851 *wd = EIO_INVALID_WD;
863 if (!req_invoke (req))
864 {
865 req_destroy (req);
866 unblock_sig ();
867 croak (0);
868 }
869
870 count++;
871 }
872
873 req_destroy (req);
874
875 if (maxreqs && !--maxreqs)
876 break;
877
878 if (max_poll_time)
879 {
880 gettimeofday (&tv_now, 0);
881
882 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883 break;
884 }
885 } 852 }
853 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
854 {
855 *wd = (aio_wd)(long)SvIVX (rv);
856 *wdsv = SvREFCNT_inc_NN (rv);
857 *ptr = ".";
858 return; /* path set to "." */
859 }
860 else
861 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
862 }
886 863
887 if (nreqs <= max_outstanding) 864 *pathsv = newSVsv (path);
865 *ptr = SvPVbyte_nolen (*pathsv);
866}
867
868static void ecb_noinline
869req_set_path1 (aio_req req, SV *path)
870{
871 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
872}
873
874static void ecb_noinline
875req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
876{
877 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
878
879 switch (SvTYPE (rv))
880 {
881 case SVt_PVIO:
882 case SVt_PVLV:
883 case SVt_PVGV:
884 req->type = type_fh;
885 req->sv1 = newSVsv (fh_or_path);
886 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
888 break; 887 break;
889 888
890 poll_wait (); 889 default:
891 890 req->type = type_path;
892 ++maxreqs; 891 req_set_path1 (req, fh_or_path);
892 break;
893 } 893 }
894
895 unblock_sig ();
896 return count;
897} 894}
898 895
899/*****************************************************************************/ 896XS(boot_IO__AIO) ecb_cold;
900/* work around various missing functions */
901 897
902#if !HAVE_PREADWRITE
903# define pread aio_pread
904# define pwrite aio_pwrite
905
906/*
907 * make our pread/pwrite safe against themselves, but not against
908 * normal read/write by using a mutex. slows down execution a lot,
909 * but that's your problem, not mine.
910 */
911static mutex_t preadwritelock = X_MUTEX_INIT;
912
913static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914{
915 ssize_t res;
916 off_t ooffset;
917
918 X_LOCK (preadwritelock);
919 ooffset = lseek (fd, 0, SEEK_CUR);
920 lseek (fd, offset, SEEK_SET);
921 res = read (fd, buf, count);
922 lseek (fd, ooffset, SEEK_SET);
923 X_UNLOCK (preadwritelock);
924
925 return res;
926}
927
928static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929{
930 ssize_t res;
931 off_t ooffset;
932
933 X_LOCK (preadwritelock);
934 ooffset = lseek (fd, 0, SEEK_CUR);
935 lseek (fd, offset, SEEK_SET);
936 res = write (fd, buf, count);
937 lseek (fd, offset, SEEK_SET);
938 X_UNLOCK (preadwritelock);
939
940 return res;
941}
942#endif
943
944#ifndef HAVE_FUTIMES
945
946# define utimes(path,times) aio_utimes (path, times)
947# define futimes(fd,times) aio_futimes (fd, times)
948
949int aio_utimes (const char *filename, const struct timeval times[2])
950{
951 if (times)
952 {
953 struct utimbuf buf;
954
955 buf.actime = times[0].tv_sec;
956 buf.modtime = times[1].tv_sec;
957
958 return utime (filename, &buf);
959 }
960 else
961 return utime (filename, 0);
962}
963
964int aio_futimes (int fd, const struct timeval tv[2])
965{
966 errno = ENOSYS;
967 return -1;
968}
969
970#endif
971
972#if !HAVE_FDATASYNC
973# define fdatasync fsync
974#endif
975
976#if !HAVE_READAHEAD
977# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980{
981 size_t todo = count;
982 dBUF;
983
984 while (todo > 0)
985 {
986 size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988 pread (fd, aio_buf, len, offset);
989 offset += len;
990 todo -= len;
991 }
992
993 errno = 0;
994 return count;
995}
996
997#endif
998
999#if !HAVE_READDIR_R
1000# define readdir_r aio_readdir_r
1001
1002static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005{
1006 X_DIRENT *e;
1007 int errorno;
1008
1009 X_LOCK (readdirlock);
1010
1011 e = readdir (dirp);
1012 errorno = errno;
1013
1014 if (e)
1015 {
1016 *res = ent;
1017 strcpy (ent->d_name, e->d_name);
1018 }
1019 else
1020 *res = 0;
1021
1022 X_UNLOCK (readdirlock);
1023
1024 errno = errorno;
1025 return e ? 0 : -1;
1026}
1027#endif
1028
1029/* sendfile always needs emulation */
1030static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031{
1032 ssize_t res;
1033
1034 if (!count)
1035 return 0;
1036
1037#if HAVE_SENDFILE
1038# if __linux
1039 res = sendfile (ofd, ifd, &offset, count);
1040
1041# elif __freebsd
1042 /*
1043 * Of course, the freebsd sendfile is a dire hack with no thoughts
1044 * wasted on making it similar to other I/O functions.
1045 */
1046 {
1047 off_t sbytes;
1048 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050 if (res < 0 && sbytes)
1051 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052 res = sbytes;
1053 }
1054
1055# elif __hpux
1056 res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058# elif __solaris
1059 {
1060 struct sendfilevec vec;
1061 size_t sbytes;
1062
1063 vec.sfv_fd = ifd;
1064 vec.sfv_flag = 0;
1065 vec.sfv_off = offset;
1066 vec.sfv_len = count;
1067
1068 res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070 if (res < 0 && sbytes)
1071 res = sbytes;
1072 }
1073
1074# endif
1075#else
1076 res = -1;
1077 errno = ENOSYS;
1078#endif
1079
1080 if (res < 0
1081 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082#if __solaris
1083 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084#endif
1085 )
1086 )
1087 {
1088 /* emulate sendfile. this is a major pain in the ass */
1089 dBUF;
1090
1091 res = 0;
1092
1093 while (count)
1094 {
1095 ssize_t cnt;
1096
1097 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099 if (cnt <= 0)
1100 {
1101 if (cnt && !res) res = -1;
1102 break;
1103 }
1104
1105 cnt = write (ofd, aio_buf, cnt);
1106
1107 if (cnt <= 0)
1108 {
1109 if (cnt && !res) res = -1;
1110 break;
1111 }
1112
1113 offset += cnt;
1114 res += cnt;
1115 count -= cnt;
1116 }
1117 }
1118
1119 return res;
1120}
1121
1122/* read a full directory */
1123static void scandir_ (aio_req req, worker *self)
1124{
1125 DIR *dirp;
1126 union
1127 {
1128 X_DIRENT d;
1129 char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130 } *u;
1131 X_DIRENT *entp;
1132 char *name, *names;
1133 int memlen = 4096;
1134 int memofs = 0;
1135 int res = 0;
1136
1137 X_LOCK (wrklock);
1138 self->dirp = dirp = opendir (req->ptr1);
1139 self->dbuf = u = malloc (sizeof (*u));
1140 req->flags |= FLAG_PTR2_FREE;
1141 req->ptr2 = names = malloc (memlen);
1142 X_UNLOCK (wrklock);
1143
1144 if (dirp && u && names)
1145 for (;;)
1146 {
1147 errno = 0;
1148 readdir_r (dirp, &u->d, &entp);
1149
1150 if (!entp)
1151 break;
1152
1153 name = entp->d_name;
1154
1155 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156 {
1157 int len = strlen (name) + 1;
1158
1159 res++;
1160
1161 while (memofs + len > memlen)
1162 {
1163 memlen *= 2;
1164 X_LOCK (wrklock);
1165 req->ptr2 = names = realloc (names, memlen);
1166 X_UNLOCK (wrklock);
1167
1168 if (!names)
1169 break;
1170 }
1171
1172 memcpy (names + memofs, name, len);
1173 memofs += len;
1174 }
1175 }
1176
1177 if (errno)
1178 res = -1;
1179
1180 req->result = res;
1181}
1182
1183/*****************************************************************************/
1184
1185X_THREAD_PROC (aio_proc)
1186{
1187 {//D
1188 aio_req req;
1189 struct timespec ts;
1190 worker *self = (worker *)thr_arg;
1191
1192 /* try to distribute timeouts somewhat randomly */
1193 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195 for (;;)
1196 {
1197 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199 X_LOCK (reqlock);
1200
1201 for (;;)
1202 {
1203 self->req = req = reqq_shift (&req_queue);
1204
1205 if (req)
1206 break;
1207
1208 ++idle;
1209
1210 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211 == ETIMEDOUT)
1212 {
1213 if (idle > max_idle)
1214 {
1215 --idle;
1216 X_UNLOCK (reqlock);
1217 X_LOCK (wrklock);
1218 --started;
1219 X_UNLOCK (wrklock);
1220 goto quit;
1221 }
1222
1223 /* we are allowed to idle, so do so without any timeout */
1224 X_COND_WAIT (reqwait, reqlock);
1225 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226 }
1227
1228 --idle;
1229 }
1230
1231 --nready;
1232
1233 X_UNLOCK (reqlock);
1234
1235 errno = 0; /* strictly unnecessary */
1236
1237 if (!(req->flags & FLAG_CANCELLED))
1238 switch (req->type)
1239 {
1240 case REQ_READ: req->result = req->offs >= 0
1241 ? pread (req->int1, req->ptr1, req->size, req->offs)
1242 : read (req->int1, req->ptr1, req->size); break;
1243 case REQ_WRITE: req->result = req->offs >= 0
1244 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245 : write (req->int1, req->ptr1, req->size); break;
1246
1247 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258 case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259 case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262 case REQ_CLOSE: req->result = close (req->int1); break;
1263 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1273 case REQ_FSYNC: req->result = fsync (req->int1); break;
1274 case REQ_READDIR: scandir_ (req, self); break;
1275
1276 case REQ_BUSY:
1277#ifdef _WIN32
1278 Sleep (req->nv1 * 1000.);
1279#else
1280 {
1281 struct timeval tv;
1282
1283 tv.tv_sec = req->nv1;
1284 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1285
1286 req->result = select (0, 0, 0, 0, &tv);
1287 }
1288#endif
1289 break;
1290
1291 case REQ_UTIME:
1292 case REQ_FUTIME:
1293 {
1294 struct timeval tv[2];
1295 struct timeval *times;
1296
1297 if (req->nv1 != -1. || req->nv2 != -1.)
1298 {
1299 tv[0].tv_sec = req->nv1;
1300 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1301 tv[1].tv_sec = req->nv2;
1302 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1303
1304 times = tv;
1305 }
1306 else
1307 times = 0;
1308
1309
1310 req->result = req->type == REQ_FUTIME
1311 ? futimes (req->int1, times)
1312 : utimes (req->ptr1, times);
1313 }
1314
1315 case REQ_GROUP:
1316 case REQ_NOP:
1317 break;
1318
1319 case REQ_QUIT:
1320 goto quit;
1321
1322 default:
1323 req->result = -1;
1324 break;
1325 }
1326
1327 req->errorno = errno;
1328
1329 X_LOCK (reslock);
1330
1331 ++npending;
1332
1333 if (!reqq_push (&res_queue, req))
1334 {
1335 /* write a dummy byte to the pipe so fh becomes ready */
1336 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1337
1338 /* optionally signal the main thread asynchronously */
1339 if (main_sig)
1340 pthread_kill (main_tid, main_sig);
1341 }
1342
1343 self->req = 0;
1344 worker_clear (self);
1345
1346 X_UNLOCK (reslock);
1347 }
1348
1349quit:
1350 X_LOCK (wrklock);
1351 worker_free (self);
1352 X_UNLOCK (wrklock);
1353
1354 return 0;
1355 }//D
1356}
1357
1358/*****************************************************************************/
1359
1360static void atfork_prepare (void)
1361{
1362 X_LOCK (wrklock);
1363 X_LOCK (reqlock);
1364 X_LOCK (reslock);
1365#if !HAVE_PREADWRITE
1366 X_LOCK (preadwritelock);
1367#endif
1368#if !HAVE_READDIR_R
1369 X_LOCK (readdirlock);
1370#endif
1371}
1372
1373static void atfork_parent (void)
1374{
1375#if !HAVE_READDIR_R
1376 X_UNLOCK (readdirlock);
1377#endif
1378#if !HAVE_PREADWRITE
1379 X_UNLOCK (preadwritelock);
1380#endif
1381 X_UNLOCK (reslock);
1382 X_UNLOCK (reqlock);
1383 X_UNLOCK (wrklock);
1384}
1385
1386static void atfork_child (void)
1387{
1388 aio_req prv;
1389
1390 while (prv = reqq_shift (&req_queue))
1391 req_destroy (prv);
1392
1393 while (prv = reqq_shift (&res_queue))
1394 req_destroy (prv);
1395
1396 while (wrk_first.next != &wrk_first)
1397 {
1398 worker *wrk = wrk_first.next;
1399
1400 if (wrk->req)
1401 req_destroy (wrk->req);
1402
1403 worker_clear (wrk);
1404 worker_free (wrk);
1405 }
1406
1407 started = 0;
1408 idle = 0;
1409 nreqs = 0;
1410 nready = 0;
1411 npending = 0;
1412
1413 create_respipe ();
1414
1415 atfork_parent ();
1416}
1417
1418#define dREQ \
1419 aio_req req; \
1420 int req_pri = next_pri; \
1421 next_pri = DEFAULT_PRI + PRI_BIAS; \
1422 \
1423 if (SvOK (callback) && !SvROK (callback)) \
1424 croak ("callback must be undef or of reference type"); \
1425 \
1426 Newz (0, req, 1, aio_cb); \
1427 if (!req) \
1428 croak ("out of memory during aio_req allocation"); \
1429 \
1430 req->callback = newSVsv (callback); \
1431 req->pri = req_pri
1432
1433#define REQ_SEND \
1434 req_send (req); \
1435 \
1436 if (GIMME_V != G_VOID) \
1437 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1438
1439MODULE = IO::AIO PACKAGE = IO::AIO 898MODULE = IO::AIO PACKAGE = IO::AIO
1440 899
1441PROTOTYPES: ENABLE 900PROTOTYPES: ENABLE
1442 901
1443BOOT: 902BOOT:
1444{ 903{
904 static const struct {
905 const char *name;
906 IV iv;
907 } *civ, const_iv[] = {
908# define const_niv(name, value) { # name, (IV) value },
909# define const_iv(name) { # name, (IV) name },
910# define const_eio(name) { # name, (IV) EIO_ ## name },
911
912 /* you have to re-run ./gendef0 after adding/Removing any constants here */
913
914 const_iv (ENOSYS)
915 const_iv (EXDEV)
916 const_iv (EBADR)
917
918 const_iv (O_RDONLY)
919 const_iv (O_WRONLY)
920 const_iv (O_RDWR)
921 const_iv (O_CREAT)
922 const_iv (O_TRUNC)
923 const_iv (O_EXCL)
924 const_iv (O_APPEND)
925
926 const_iv (O_ASYNC)
927 const_iv (O_DIRECT)
928 const_iv (O_NOATIME)
929
930 const_iv (O_CLOEXEC)
931 const_iv (O_NOCTTY)
932 const_iv (O_NOFOLLOW)
933 const_iv (O_NONBLOCK)
934 const_iv (O_EXEC)
935 const_iv (O_SEARCH)
936 const_iv (O_DIRECTORY)
937 const_iv (O_DSYNC)
938 const_iv (O_RSYNC)
939 const_iv (O_SYNC)
940 const_iv (O_TTY_INIT)
941
942 const_iv (S_IFIFO)
943 const_iv (S_IFCHR)
944 const_iv (S_IFBLK)
945 const_iv (S_IFLNK)
946 const_iv (S_IFREG)
947 const_iv (S_IFDIR)
948 const_iv (S_IFWHT)
949 const_iv (S_IFSOCK)
950 const_iv (S_IFMT)
951
952 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
953 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
954 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
955 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
956 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
957 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
958
959 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
960 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
961 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
962 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
963 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
964
965 const_iv (ST_RDONLY)
966 const_iv (ST_NOSUID)
967 const_iv (ST_NODEV)
968 const_iv (ST_NOEXEC)
969 const_iv (ST_SYNCHRONOUS)
970 const_iv (ST_MANDLOCK)
971 const_iv (ST_WRITE)
972 const_iv (ST_APPEND)
973 const_iv (ST_IMMUTABLE)
974 const_iv (ST_NOATIME)
975 const_iv (ST_NODIRATIME)
976 const_iv (ST_RELATIME)
977
978 const_iv (PROT_NONE)
979 const_iv (PROT_EXEC)
980 const_iv (PROT_READ)
981 const_iv (PROT_WRITE)
982
983 /*const_iv (MAP_FIXED)*/
984 const_iv (MAP_PRIVATE)
985 const_iv (MAP_SHARED)
986 const_iv (MAP_ANONYMOUS)
987
988 /* linuxish */
989 const_iv (MAP_HUGETLB)
990 const_iv (MAP_LOCKED)
991 const_iv (MAP_NORESERVE)
992 const_iv (MAP_POPULATE)
993 const_iv (MAP_NONBLOCK)
994
995 const_iv (FIEMAP_FLAG_SYNC)
996 const_iv (FIEMAP_FLAG_XATTR)
997 const_iv (FIEMAP_FLAGS_COMPAT)
998 const_iv (FIEMAP_EXTENT_LAST)
999 const_iv (FIEMAP_EXTENT_UNKNOWN)
1000 const_iv (FIEMAP_EXTENT_DELALLOC)
1001 const_iv (FIEMAP_EXTENT_ENCODED)
1002 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1003 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1004 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1005 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1006 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1007 const_iv (FIEMAP_EXTENT_MERGED)
1008 const_iv (FIEMAP_EXTENT_SHARED)
1009
1010 const_iv (SPLICE_F_MOVE)
1011 const_iv (SPLICE_F_NONBLOCK)
1012 const_iv (SPLICE_F_MORE)
1013 const_iv (SPLICE_F_GIFT)
1014
1015 const_iv (SEEK_DATA)
1016 const_iv (SEEK_HOLE)
1017
1018 /* libeio constants */
1019 const_eio (SEEK_SET)
1020 const_eio (SEEK_CUR)
1021 const_eio (SEEK_END)
1022
1023 const_eio (MCL_FUTURE)
1024 const_eio (MCL_CURRENT)
1025
1026 const_eio (MS_ASYNC)
1027 const_eio (MS_INVALIDATE)
1028 const_eio (MS_SYNC)
1029
1030 const_eio (MT_MODIFY)
1031
1032 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1033 const_eio (SYNC_FILE_RANGE_WRITE)
1034 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1035
1036 const_eio (FALLOC_FL_KEEP_SIZE)
1037 const_eio (FALLOC_FL_PUNCH_HOLE)
1038 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1039 const_eio (FALLOC_FL_ZERO_RANGE)
1040
1041 const_eio (READDIR_DENTS)
1042 const_eio (READDIR_DIRS_FIRST)
1043 const_eio (READDIR_STAT_ORDER)
1044 const_eio (READDIR_FOUND_UNKNOWN)
1045
1046 const_eio (DT_UNKNOWN)
1047 const_eio (DT_FIFO)
1048 const_eio (DT_CHR)
1049 const_eio (DT_DIR)
1050 const_eio (DT_BLK)
1051 const_eio (DT_REG)
1052 const_eio (DT_LNK)
1053 const_eio (DT_SOCK)
1054 const_eio (DT_WHT)
1055 };
1056
1445 stash = gv_stashpv ("IO::AIO", 1); 1057 aio_stash = gv_stashpv ("IO::AIO" , 1);
1058 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1059 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1060 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1446 1061
1447 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1062 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1448 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1063 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1449 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1450 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1451 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1452#ifdef _WIN32
1453 X_MUTEX_CHECK (wrklock);
1454 X_MUTEX_CHECK (reslock);
1455 X_MUTEX_CHECK (reqlock);
1456 X_MUTEX_CHECK (reqwait);
1457 X_MUTEX_CHECK (preadwritelock);
1458 X_MUTEX_CHECK (readdirlock);
1459 1064
1460 X_COND_CHECK (reqwait); 1065 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1461#else
1462 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464#endif
1465 1066
1466 create_respipe (); 1067 reinit ();
1467
1468 X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1469} 1068}
1470 1069
1471void 1070void
1071reinit ()
1072 PROTOTYPE:
1073
1074void
1472max_poll_reqs (int nreqs) 1075max_poll_reqs (unsigned int nreqs)
1473 PROTOTYPE: $ 1076 PROTOTYPE: $
1474 CODE: 1077 CODE:
1475 max_poll_reqs = nreqs; 1078 eio_set_max_poll_reqs (nreqs);
1476 1079
1477void 1080void
1478max_poll_time (double nseconds) 1081max_poll_time (double nseconds)
1479 PROTOTYPE: $ 1082 PROTOTYPE: $
1480 CODE: 1083 CODE:
1481 max_poll_time = nseconds * AIO_TICKS; 1084 eio_set_max_poll_time (nseconds);
1482 1085
1483void 1086void
1484min_parallel (int nthreads) 1087min_parallel (unsigned int nthreads)
1485 PROTOTYPE: $
1486
1487void
1488max_parallel (int nthreads)
1489 PROTOTYPE: $
1490
1491void
1492max_idle (int nthreads)
1493 PROTOTYPE: $ 1088 PROTOTYPE: $
1494 CODE: 1089 CODE:
1495 set_max_idle (nthreads); 1090 eio_set_min_parallel (nthreads);
1496 1091
1497int 1092void
1498max_outstanding (int maxreqs) 1093max_parallel (unsigned int nthreads)
1499 PROTOTYPE: $ 1094 PROTOTYPE: $
1500 CODE: 1095 CODE:
1501 RETVAL = max_outstanding; 1096 eio_set_max_parallel (nthreads);
1097
1098void
1099max_idle (unsigned int nthreads)
1100 PROTOTYPE: $
1101 CODE:
1102 eio_set_max_idle (nthreads);
1103
1104void
1105idle_timeout (unsigned int seconds)
1106 PROTOTYPE: $
1107 CODE:
1108 eio_set_idle_timeout (seconds);
1109
1110void
1111max_outstanding (unsigned int maxreqs)
1112 PROTOTYPE: $
1113 CODE:
1502 max_outstanding = maxreqs; 1114 max_outstanding = maxreqs;
1503 OUTPUT:
1504 RETVAL
1505 1115
1506void 1116void
1507aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1117aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1508 PROTOTYPE: $$$;$
1509 PPCODE: 1118 PPCODE:
1510{ 1119{
1511 dREQ; 1120 dREQ;
1512 1121
1122 req->type = EIO_WD_OPEN;
1123 req_set_path1 (req, pathname);
1124
1125 REQ_SEND;
1126}
1127
1128void
1129aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1130 PPCODE:
1131{
1132 dREQ;
1133
1513 req->type = REQ_OPEN; 1134 req->type = EIO_OPEN;
1514 req->sv1 = newSVsv (pathname); 1135 req_set_path1 (req, pathname);
1515 req->ptr1 = SvPVbyte_nolen (req->sv1);
1516 req->int1 = flags; 1136 req->int1 = flags;
1517 req->mode = mode; 1137 req->int2 = mode;
1518 1138
1519 REQ_SEND; 1139 REQ_SEND;
1520} 1140}
1521 1141
1522void 1142void
1523aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 1143aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1524 PROTOTYPE: $;$
1525 ALIAS: 1144 ALIAS:
1526 aio_fsync = REQ_FSYNC 1145 aio_fsync = EIO_FSYNC
1527 aio_fdatasync = REQ_FDATASYNC 1146 aio_fdatasync = EIO_FDATASYNC
1147 aio_syncfs = EIO_SYNCFS
1528 PPCODE: 1148 PPCODE:
1529{ 1149{
1150 int fd = s_fileno_croak (fh, 0);
1530 dREQ; 1151 dREQ;
1531 1152
1532 req->type = ix; 1153 req->type = ix;
1533 req->sv1 = newSVsv (fh); 1154 req->sv1 = newSVsv (fh);
1534 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1155 req->int1 = fd;
1535 1156
1536 REQ_SEND (req); 1157 REQ_SEND;
1537} 1158}
1538 1159
1539int
1540_dup (int fd)
1541 PROTOTYPE: $
1542 CODE:
1543 RETVAL = dup (fd);
1544 OUTPUT:
1545 RETVAL
1546
1547void 1160void
1548_aio_close (int fd, SV *callback=&PL_sv_undef) 1161aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1549 PROTOTYPE: $;$
1550 PPCODE: 1162 PPCODE:
1551{ 1163{
1164 int fd = s_fileno_croak (fh, 0);
1552 dREQ; 1165 dREQ;
1553 1166
1554 req->type = REQ_CLOSE; 1167 req->type = EIO_SYNC_FILE_RANGE;
1168 req->sv1 = newSVsv (fh);
1555 req->int1 = fd; 1169 req->int1 = fd;
1170 req->offs = offset;
1171 req->size = nbytes;
1172 req->int2 = flags;
1556 1173
1557 REQ_SEND (req); 1174 REQ_SEND;
1558} 1175}
1559 1176
1560void 1177void
1178aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1179 PPCODE:
1180{
1181 int fd = s_fileno_croak (fh, 0);
1182 dREQ;
1183
1184 req->type = EIO_FALLOCATE;
1185 req->sv1 = newSVsv (fh);
1186 req->int1 = fd;
1187 req->int2 = mode;
1188 req->offs = offset;
1189 req->size = len;
1190
1191 REQ_SEND;
1192}
1193
1194void
1195aio_close (SV *fh, SV *callback = &PL_sv_undef)
1196 PPCODE:
1197{
1198 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1199 int fd = s_fileno_croak (fh, 0);
1200 dREQ;
1201
1202 if (expect_false (close_fd < 0))
1203 {
1204 int pipefd [2];
1205
1206 if (
1207#ifdef _WIN32
1208 _pipe (pipefd, 1, _O_BINARY) < 0
1209#else
1210 pipe (pipefd) < 0
1211 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1212#endif
1213 || close (pipefd [1]) < 0
1214 )
1215 abort (); /*D*/
1216
1217 close_fd = pipefd [0];
1218 }
1219
1220 req->type = EIO_DUP2;
1221 req->int1 = close_fd;
1222 req->sv2 = newSVsv (fh);
1223 req->int2 = fd;
1224
1225 REQ_SEND;
1226}
1227
1228void
1229aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1230 PPCODE:
1231{
1232 int fd = s_fileno_croak (fh, 0);
1233 dREQ;
1234
1235 req->type = EIO_SEEK;
1236 req->sv1 = newSVsv (fh);
1237 req->int1 = fd;
1238 req->offs = SvVAL64 (offset);
1239 req->int2 = whence;
1240
1241 REQ_SEND;
1242}
1243
1244void
1561aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1245aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1562 ALIAS: 1246 ALIAS:
1563 aio_read = REQ_READ 1247 aio_read = EIO_READ
1564 aio_write = REQ_WRITE 1248 aio_write = EIO_WRITE
1565 PROTOTYPE: $$$$$;$
1566 PPCODE: 1249 PPCODE:
1567{ 1250{
1568 STRLEN svlen; 1251 STRLEN svlen;
1252 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569 char *svptr = SvPVbyte (data, svlen); 1253 char *svptr = SvPVbyte (data, svlen);
1570 UV len = SvUV (length); 1254 UV len = SvUV (length);
1571 1255
1572 SvUPGRADE (data, SVt_PV);
1573 SvPOK_on (data);
1574
1575 if (dataoffset < 0) 1256 if (dataoffset < 0)
1576 dataoffset += svlen; 1257 dataoffset += svlen;
1577 1258
1578 if (dataoffset < 0 || dataoffset > svlen) 1259 if (dataoffset < 0 || dataoffset > svlen)
1579 croak ("dataoffset outside of data scalar"); 1260 croak ("dataoffset outside of data scalar");
1580 1261
1581 if (ix == REQ_WRITE) 1262 if (ix == EIO_WRITE)
1582 { 1263 {
1583 /* write: check length and adjust. */ 1264 /* write: check length and adjust. */
1584 if (!SvOK (length) || len + dataoffset > svlen) 1265 if (!SvOK (length) || len + dataoffset > svlen)
1585 len = svlen - dataoffset; 1266 len = svlen - dataoffset;
1586 } 1267 }
1587 else 1268 else
1588 { 1269 {
1589 /* read: grow scalar as necessary */ 1270 /* read: check type and grow scalar as necessary */
1271 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1590 svptr = SvGROW (data, len + dataoffset + 1); 1272 svptr = sv_grow (data, len + dataoffset + 1);
1273 else if (SvCUR (data) < len + dataoffset)
1274 croak ("length + dataoffset outside of scalar, and cannot grow");
1591 } 1275 }
1592
1593 if (len < 0)
1594 croak ("length must not be negative");
1595 1276
1596 { 1277 {
1597 dREQ; 1278 dREQ;
1598 1279
1599 req->type = ix; 1280 req->type = ix;
1600 req->sv1 = newSVsv (fh); 1281 req->sv1 = newSVsv (fh);
1601 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1282 req->int1 = fd;
1602 : IoOFP (sv_2io (fh)));
1603 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1283 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604 req->size = len; 1284 req->size = len;
1605 req->sv2 = SvREFCNT_inc (data); 1285 req->sv2 = SvREFCNT_inc (data);
1606 req->ptr1 = (char *)svptr + dataoffset; 1286 req->ptr2 = (char *)svptr + dataoffset;
1607 req->stroffset = dataoffset; 1287 req->stroffset = dataoffset;
1608 1288
1609 if (!SvREADONLY (data)) 1289 if (!SvREADONLY (data))
1610 { 1290 {
1611 SvREADONLY_on (data); 1291 SvREADONLY_on (data);
… …
1615 REQ_SEND; 1295 REQ_SEND;
1616 } 1296 }
1617} 1297}
1618 1298
1619void 1299void
1620aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1300aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1621 PROTOTYPE: $$;$ 1301 ALIAS:
1302 aio_readlink = EIO_READLINK
1303 aio_realpath = EIO_REALPATH
1622 PPCODE: 1304 PPCODE:
1623{ 1305{
1624 SV *data;
1625 dREQ; 1306 dREQ;
1626 1307
1627 data = newSV (NAME_MAX);
1628 SvPOK_on (data);
1629
1630 req->type = REQ_READLINK; 1308 req->type = ix;
1631 req->sv1 = newSVsv (path); 1309 req_set_path1 (req, pathname);
1632 req->ptr2 = SvPVbyte_nolen (req->sv1);
1633 req->sv2 = data;
1634 req->ptr1 = SvPVbyte_nolen (data);
1635 1310
1636 REQ_SEND; 1311 REQ_SEND;
1637} 1312}
1638 1313
1639void 1314void
1640aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) 1315aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1641 PROTOTYPE: $$$$;$
1642 PPCODE: 1316 PPCODE:
1643{ 1317{
1318 int ifd = s_fileno_croak (in_fh , 0);
1319 int ofd = s_fileno_croak (out_fh, 1);
1644 dREQ; 1320 dREQ;
1645 1321
1646 req->type = REQ_SENDFILE; 1322 req->type = EIO_SENDFILE;
1647 req->sv1 = newSVsv (out_fh); 1323 req->sv1 = newSVsv (out_fh);
1648 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1324 req->int1 = ofd;
1649 req->sv2 = newSVsv (in_fh); 1325 req->sv2 = newSVsv (in_fh);
1650 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1326 req->int2 = ifd;
1651 req->offs = SvVAL64 (in_offset); 1327 req->offs = in_offset;
1652 req->size = length; 1328 req->size = length;
1653 1329
1654 REQ_SEND; 1330 REQ_SEND;
1655} 1331}
1656 1332
1657void 1333void
1658aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) 1334aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1659 PROTOTYPE: $$$;$
1660 PPCODE: 1335 PPCODE:
1661{ 1336{
1337 int fd = s_fileno_croak (fh, 0);
1662 dREQ; 1338 dREQ;
1663 1339
1664 req->type = REQ_READAHEAD; 1340 req->type = EIO_READAHEAD;
1665 req->sv1 = newSVsv (fh); 1341 req->sv1 = newSVsv (fh);
1666 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1342 req->int1 = fd;
1667 req->offs = SvVAL64 (offset); 1343 req->offs = offset;
1668 req->size = length; 1344 req->size = length;
1669 1345
1670 REQ_SEND; 1346 REQ_SEND;
1671} 1347}
1672 1348
1673void 1349void
1674aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) 1350aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1675 ALIAS: 1351 ALIAS:
1676 aio_stat = REQ_STAT 1352 aio_stat = EIO_STAT
1677 aio_lstat = REQ_LSTAT 1353 aio_lstat = EIO_LSTAT
1354 aio_statvfs = EIO_STATVFS
1678 PPCODE: 1355 PPCODE:
1679{ 1356{
1680 dREQ; 1357 dREQ;
1681 1358
1682 req->ptr2 = malloc (sizeof (Stat_t)); 1359 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1683 if (!req->ptr2)
1684 {
1685 req_destroy (req);
1686 croak ("out of memory during aio_stat statdata allocation");
1687 }
1688
1689 req->flags |= FLAG_PTR2_FREE;
1690 req->sv1 = newSVsv (fh_or_path);
1691
1692 if (SvPOK (fh_or_path))
1693 {
1694 req->type = ix;
1695 req->ptr1 = SvPVbyte_nolen (req->sv1);
1696 }
1697 else
1698 {
1699 req->type = REQ_FSTAT;
1700 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1701 }
1702 1360
1703 REQ_SEND; 1361 REQ_SEND;
1704} 1362}
1705 1363
1364UV
1365major (UV dev)
1366 ALIAS:
1367 minor = 1
1368 CODE:
1369 RETVAL = ix ? major (dev) : minor (dev);
1370 OUTPUT:
1371 RETVAL
1372
1373UV
1374makedev (UV maj, UV min)
1375 CODE:
1376 RETVAL = makedev (maj, min);
1377 OUTPUT:
1378 RETVAL
1379
1706void 1380void
1707aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1381aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1708 PPCODE: 1382 PPCODE:
1709{ 1383{
1710 dREQ; 1384 dREQ;
1711 1385
1712 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1386 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1387 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714 req->sv1 = newSVsv (fh_or_path); 1388 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1715
1716 if (SvPOK (fh_or_path))
1717 {
1718 req->type = REQ_UTIME;
1719 req->ptr1 = SvPVbyte_nolen (req->sv1);
1720 }
1721 else
1722 {
1723 req->type = REQ_FUTIME;
1724 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725 }
1726 1389
1727 REQ_SEND; 1390 REQ_SEND;
1728} 1391}
1729 1392
1730void 1393void
1731aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) 1394aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1732 PPCODE: 1395 PPCODE:
1733{ 1396{
1734 dREQ; 1397 dREQ;
1735 1398
1736 req->sv1 = newSVsv (fh_or_path);
1737 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1399 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738 1400 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1739 if (SvPOK (fh_or_path))
1740 {
1741 req->type = REQ_TRUNCATE;
1742 req->ptr1 = SvPVbyte_nolen (req->sv1);
1743 }
1744 else
1745 {
1746 req->type = REQ_FTRUNCATE;
1747 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748 }
1749 1401
1750 REQ_SEND; 1402 REQ_SEND;
1751} 1403}
1752 1404
1753void 1405void
1754aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1406aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1755 PPCODE: 1407 PPCODE:
1756{ 1408{
1757 dREQ; 1409 dREQ;
1758 1410
1759 req->mode = mode; 1411 req->int2 = mode;
1760 req->sv1 = newSVsv (fh_or_path); 1412 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1761
1762 if (SvPOK (fh_or_path))
1763 {
1764 req->type = REQ_CHMOD;
1765 req->ptr1 = SvPVbyte_nolen (req->sv1);
1766 }
1767 else
1768 {
1769 req->type = REQ_FCHMOD;
1770 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771 }
1772 1413
1773 REQ_SEND; 1414 REQ_SEND;
1774} 1415}
1775 1416
1776void 1417void
1777aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) 1418aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1778 PPCODE: 1419 PPCODE:
1779{ 1420{
1780 dREQ; 1421 dREQ;
1781 1422
1782 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1423 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1424 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784 req->sv1 = newSVsv (fh_or_path); 1425 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1785
1786 if (SvPOK (fh_or_path))
1787 {
1788 req->type = REQ_CHOWN;
1789 req->ptr1 = SvPVbyte_nolen (req->sv1);
1790 }
1791 else
1792 {
1793 req->type = REQ_FCHOWN;
1794 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795 }
1796 1426
1797 REQ_SEND; 1427 REQ_SEND;
1798} 1428}
1799 1429
1800void 1430void
1431aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1432 PPCODE:
1433{
1434 dREQ;
1435
1436 req->type = EIO_READDIR;
1437 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1438
1439 if (flags & EIO_READDIR_DENTS)
1440 req->int1 |= EIO_READDIR_CUSTOM2;
1441
1442 req_set_path1 (req, pathname);
1443
1444 REQ_SEND;
1445}
1446
1447void
1448aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1449 PPCODE:
1450{
1451 dREQ;
1452
1453 req->type = EIO_MKDIR;
1454 req->int2 = mode;
1455 req_set_path1 (req, pathname);
1456
1457 REQ_SEND;
1458}
1459
1460void
1801aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1461aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1802 ALIAS: 1462 ALIAS:
1803 aio_unlink = REQ_UNLINK 1463 aio_unlink = EIO_UNLINK
1804 aio_rmdir = REQ_RMDIR 1464 aio_rmdir = EIO_RMDIR
1805 aio_readdir = REQ_READDIR 1465 aio_readdir = EIO_READDIR
1806 PPCODE: 1466 PPCODE:
1807{ 1467{
1808 dREQ; 1468 dREQ;
1809 1469
1810 req->type = ix; 1470 req->type = ix;
1811 req->sv1 = newSVsv (pathname); 1471 req_set_path1 (req, pathname);
1812 req->ptr1 = SvPVbyte_nolen (req->sv1);
1813 1472
1814 REQ_SEND; 1473 REQ_SEND;
1815} 1474}
1816 1475
1817void 1476void
1818aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) 1477aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1478 ALIAS:
1479 aio_link = EIO_LINK
1480 aio_symlink = EIO_SYMLINK
1481 aio_rename = EIO_RENAME
1819 PPCODE: 1482 PPCODE:
1820{ 1483{
1821 dREQ; 1484 eio_wd wd2 = 0;
1822
1823 req->type = REQ_MKDIR;
1824 req->sv1 = newSVsv (pathname);
1825 req->ptr1 = SvPVbyte_nolen (req->sv1);
1826 req->mode = mode;
1827
1828 REQ_SEND;
1829}
1830
1831void
1832aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833 ALIAS:
1834 aio_link = REQ_LINK
1835 aio_symlink = REQ_SYMLINK
1836 aio_rename = REQ_RENAME
1837 PPCODE:
1838{
1839 dREQ; 1485 dREQ;
1840 1486
1841 req->type = ix; 1487 req->type = ix;
1842 req->sv2 = newSVsv (oldpath); 1488 req_set_path1 (req, oldpath);
1843 req->ptr2 = SvPVbyte_nolen (req->sv2); 1489 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1844 req->sv1 = newSVsv (newpath); 1490 req->int3 = (long)wd2;
1845 req->ptr1 = SvPVbyte_nolen (req->sv1);
1846 1491
1847 REQ_SEND; 1492 REQ_SEND;
1848} 1493}
1849 1494
1850void 1495void
1851aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1496aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1852 PPCODE: 1497 PPCODE:
1853{ 1498{
1854 dREQ; 1499 dREQ;
1855 1500
1856 req->type = REQ_MKNOD; 1501 req->type = EIO_MKNOD;
1857 req->sv1 = newSVsv (pathname);
1858 req->ptr1 = SvPVbyte_nolen (req->sv1);
1859 req->mode = (mode_t)mode; 1502 req->int2 = (mode_t)mode;
1860 req->offs = dev; 1503 req->offs = dev;
1504 req_set_path1 (req, pathname);
1861 1505
1862 REQ_SEND; 1506 REQ_SEND;
1863} 1507}
1864 1508
1865void 1509void
1510aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1511 ALIAS:
1512 aio_mtouch = EIO_MTOUCH
1513 aio_msync = EIO_MSYNC
1514 PPCODE:
1515{
1516 STRLEN svlen;
1517 char *svptr = SvPVbyte (data, svlen);
1518 UV len = SvUV (length);
1519
1520 if (offset < 0)
1521 offset += svlen;
1522
1523 if (offset < 0 || offset > svlen)
1524 croak ("offset outside of scalar");
1525
1526 if (!SvOK (length) || len + offset > svlen)
1527 len = svlen - offset;
1528
1529 {
1530 dREQ;
1531
1532 req->type = ix;
1533 req->sv2 = SvREFCNT_inc (data);
1534 req->ptr2 = (char *)svptr + offset;
1535 req->size = len;
1536 req->int1 = flags;
1537
1538 REQ_SEND;
1539 }
1540}
1541
1542void
1543aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1544 PPCODE:
1545{
1546 STRLEN svlen;
1547 char *svptr = SvPVbyte (data, svlen);
1548 UV len = SvUV (length);
1549
1550 if (offset < 0)
1551 offset += svlen;
1552
1553 if (offset < 0 || offset > svlen)
1554 croak ("offset outside of scalar");
1555
1556 if (!SvOK (length) || len + offset > svlen)
1557 len = svlen - offset;
1558
1559 {
1560 dREQ;
1561
1562 req->type = EIO_MLOCK;
1563 req->sv2 = SvREFCNT_inc (data);
1564 req->ptr2 = (char *)svptr + offset;
1565 req->size = len;
1566
1567 REQ_SEND;
1568 }
1569}
1570
1571void
1572aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1573 PPCODE:
1574{
1575 dREQ;
1576
1577 req->type = EIO_MLOCKALL;
1578 req->int1 = flags;
1579
1580 REQ_SEND;
1581}
1582
1583void
1584aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1585 PPCODE:
1586{
1587 int fd = s_fileno_croak (fh, 0);
1588 dREQ;
1589
1590 req->type = EIO_CUSTOM;
1591 req->sv1 = newSVsv (fh);
1592 req->int1 = fd;
1593
1594 req->feed = fiemap;
1595#if HAVE_FIEMAP
1596 /* keep our fingers crossed that the next two types are 64 bit */
1597 req->offs = start;
1598 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1599 req->int2 = flags;
1600 req->int3 = SvOK (count) ? SvIV (count) : -1;
1601#endif
1602
1603 REQ_SEND;
1604}
1605
1606void
1866aio_busy (double delay, SV *callback=&PL_sv_undef) 1607aio_busy (double delay, SV *callback = &PL_sv_undef)
1867 PPCODE: 1608 PPCODE:
1868{ 1609{
1869 dREQ; 1610 dREQ;
1870 1611
1871 req->type = REQ_BUSY; 1612 req->type = EIO_BUSY;
1872 req->nv1 = delay < 0. ? 0. : delay; 1613 req->nv1 = delay < 0. ? 0. : delay;
1873 1614
1874 REQ_SEND; 1615 REQ_SEND;
1875} 1616}
1876 1617
1877void 1618void
1878aio_group (SV *callback=&PL_sv_undef) 1619aio_group (SV *callback = &PL_sv_undef)
1879 PROTOTYPE: ;$
1880 PPCODE: 1620 PPCODE:
1881{ 1621{
1882 dREQ; 1622 dREQ;
1883 1623
1884 req->type = REQ_GROUP; 1624 req->type = EIO_GROUP;
1885 1625
1626 PUTBACK;
1886 req_send (req); 1627 req_submit (req);
1628 SPAGAIN;
1629
1887 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1630 XPUSHs (req_sv (req, aio_grp_stash));
1888} 1631}
1889 1632
1890void 1633void
1891aio_nop (SV *callback=&PL_sv_undef) 1634aio_nop (SV *callback = &PL_sv_undef)
1635 ALIAS:
1636 aio_nop = EIO_NOP
1637 aio_sync = EIO_SYNC
1892 PPCODE: 1638 PPCODE:
1893{ 1639{
1894 dREQ; 1640 dREQ;
1895 1641
1896 req->type = REQ_NOP; 1642 req->type = ix;
1897 1643
1898 REQ_SEND; 1644 REQ_SEND;
1899} 1645}
1900 1646
1901int 1647int
1902aioreq_pri (int pri = 0) 1648aioreq_pri (int pri = NO_INIT)
1903 PROTOTYPE: ;$
1904 CODE: 1649 CODE:
1905 RETVAL = next_pri - PRI_BIAS; 1650 RETVAL = next_pri;
1906 if (items > 0) 1651 if (items > 0)
1907 { 1652 {
1908 if (pri < PRI_MIN) pri = PRI_MIN; 1653 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1909 if (pri > PRI_MAX) pri = PRI_MAX; 1654 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1910 next_pri = pri + PRI_BIAS; 1655 next_pri = pri;
1911 } 1656 }
1912 OUTPUT: 1657 OUTPUT:
1913 RETVAL 1658 RETVAL
1914 1659
1915void 1660void
1916aioreq_nice (int nice = 0) 1661aioreq_nice (int nice = 0)
1917 CODE: 1662 CODE:
1918 nice = next_pri - nice; 1663 nice = next_pri - nice;
1919 if (nice < PRI_MIN) nice = PRI_MIN; 1664 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1920 if (nice > PRI_MAX) nice = PRI_MAX; 1665 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1921 next_pri = nice + PRI_BIAS; 1666 next_pri = nice;
1922 1667
1923void 1668void
1924flush () 1669flush ()
1925 PROTOTYPE:
1926 CODE: 1670 CODE:
1927 while (nreqs) 1671 while (eio_nreqs ())
1928 { 1672 {
1929 poll_wait (); 1673 poll_wait ();
1930 poll_cb (); 1674 poll_cb ();
1931 } 1675 }
1932 1676
1933int 1677int
1934poll() 1678poll ()
1935 PROTOTYPE:
1936 CODE: 1679 CODE:
1937 poll_wait (); 1680 poll_wait ();
1938 RETVAL = poll_cb (); 1681 RETVAL = poll_cb ();
1939 OUTPUT: 1682 OUTPUT:
1940 RETVAL 1683 RETVAL
1941 1684
1942int 1685int
1943poll_fileno() 1686poll_fileno ()
1944 PROTOTYPE:
1945 CODE: 1687 CODE:
1946 RETVAL = respipe [0]; 1688 RETVAL = s_epipe_fd (&respipe);
1947 OUTPUT: 1689 OUTPUT:
1948 RETVAL 1690 RETVAL
1949 1691
1950int 1692int
1951poll_cb(...) 1693poll_cb (...)
1952 PROTOTYPE: 1694 PROTOTYPE:
1953 CODE: 1695 CODE:
1954 RETVAL = poll_cb (); 1696 RETVAL = poll_cb ();
1955 OUTPUT: 1697 OUTPUT:
1956 RETVAL 1698 RETVAL
1957 1699
1958void 1700void
1959poll_wait() 1701poll_wait ()
1960 PROTOTYPE:
1961 CODE: 1702 CODE:
1962 poll_wait (); 1703 poll_wait ();
1963 1704
1964void
1965setsig (int signum = SIGIO)
1966 PROTOTYPE: ;$
1967 CODE:
1968{
1969 if (block_sig_level)
1970 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1971
1972 X_LOCK (reslock);
1973 main_tid = pthread_self ();
1974 main_sig = signum;
1975 X_UNLOCK (reslock);
1976
1977 if (main_sig && npending)
1978 pthread_kill (main_tid, main_sig);
1979}
1980
1981void
1982aio_block (SV *cb)
1983 PROTOTYPE: &
1984 PPCODE:
1985{
1986 int count;
1987
1988 block_sig ();
1989 PUSHMARK (SP);
1990 PUTBACK;
1991 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1992 SPAGAIN;
1993 unblock_sig ();
1994
1995 if (SvTRUE (ERRSV))
1996 croak (0);
1997
1998 XSRETURN (count);
1999}
2000
2001int 1705int
2002nreqs() 1706nreqs ()
2003 PROTOTYPE:
2004 CODE: 1707 CODE:
2005 RETVAL = nreqs; 1708 RETVAL = eio_nreqs ();
2006 OUTPUT: 1709 OUTPUT:
2007 RETVAL 1710 RETVAL
2008 1711
2009int 1712int
2010nready() 1713nready ()
2011 PROTOTYPE:
2012 CODE: 1714 CODE:
2013 RETVAL = get_nready (); 1715 RETVAL = eio_nready ();
2014 OUTPUT: 1716 OUTPUT:
2015 RETVAL 1717 RETVAL
2016 1718
2017int 1719int
2018npending() 1720npending ()
2019 PROTOTYPE:
2020 CODE: 1721 CODE:
2021 RETVAL = get_npending (); 1722 RETVAL = eio_npending ();
2022 OUTPUT: 1723 OUTPUT:
2023 RETVAL 1724 RETVAL
2024 1725
2025int 1726int
2026nthreads() 1727nthreads ()
2027 PROTOTYPE:
2028 CODE: 1728 CODE:
2029 if (WORDACCESS_UNSAFE) X_LOCK (wrklock); 1729 RETVAL = eio_nthreads ();
2030 RETVAL = started;
2031 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2032 OUTPUT: 1730 OUTPUT:
2033 RETVAL 1731 RETVAL
2034 1732
1733int
1734fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1735 CODE:
1736 RETVAL = posix_fadvise (fh, offset, length, advice);
1737 OUTPUT:
1738 RETVAL
1739
1740IV
1741sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1742 CODE:
1743 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1744 OUTPUT:
1745 RETVAL
1746
1747void
1748mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1749 PPCODE:
1750 sv_unmagic (scalar, MMAP_MAGIC);
1751{
1752 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1753 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1754 if (addr == (void *)-1)
1755 XSRETURN_NO;
1756
1757 sv_force_normal (scalar);
1758
1759 /* we store the length in mg_obj, as namlen is I32 :/ */
1760 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1761 ->mg_obj = (SV *)length;
1762
1763 SvUPGRADE (scalar, SVt_PV); /* nop... */
1764
1765 if (!(prot & PROT_WRITE))
1766 SvREADONLY_on (scalar);
1767
1768 if (SvLEN (scalar))
1769 Safefree (SvPVX (scalar));
1770
1771 SvPVX (scalar) = (char *)addr;
1772 SvCUR_set (scalar, length);
1773 SvLEN_set (scalar, 0);
1774 SvPOK_only (scalar);
1775
1776 XSRETURN_YES;
1777}
1778
1779void
1780munmap (SV *scalar)
1781 CODE:
1782 sv_unmagic (scalar, MMAP_MAGIC);
1783
1784int
1785madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1786 ALIAS:
1787 mprotect = 1
1788 CODE:
1789{
1790 STRLEN svlen;
1791 void *addr = SvPVbyte (scalar, svlen);
1792 STRLEN len = SvUV (length);
1793
1794 if (offset < 0)
1795 offset += svlen;
1796
1797 if (offset < 0 || offset > svlen)
1798 croak ("offset outside of scalar");
1799
1800 if (!SvOK (length) || len + offset > svlen)
1801 len = svlen - offset;
1802
1803 addr = (void *)(((intptr_t)addr) + offset);
1804 eio_page_align (&addr, &len);
1805
1806 switch (ix)
1807 {
1808 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1809 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1810 }
1811}
1812 OUTPUT:
1813 RETVAL
1814
1815int
1816munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1817 CODE:
1818{
1819 STRLEN svlen;
1820 void *addr = SvPVbyte (scalar, svlen);
1821 size_t len = SvUV (length);
1822
1823 if (offset < 0)
1824 offset += svlen;
1825
1826 if (offset < 0 || offset > svlen)
1827 croak ("offset outside of scalar");
1828
1829 if (!SvOK (length) || len + offset > svlen)
1830 len = svlen - offset;
1831
1832 addr = (void *)(((intptr_t)addr) + offset);
1833 eio_page_align (&addr, &len);
1834#if _POSIX_MEMLOCK_RANGE
1835 RETVAL = munlock (addr, len);
1836#else
1837 RETVAL = EIO_ENOSYS ();
1838#endif
1839}
1840 OUTPUT:
1841 RETVAL
1842
1843int
1844munlockall ()
1845 CODE:
1846#if _POSIX_MEMLOCK
1847 munlockall ();
1848#else
1849 RETVAL = EIO_ENOSYS ();
1850#endif
1851 OUTPUT:
1852 RETVAL
1853
1854int
1855splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1856 CODE:
1857{
1858#if HAVE_LINUX_SPLICE
1859 loff_t off_in_, off_out_;
1860 RETVAL = splice (
1861 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1862 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1863 length, flags
1864 );
1865#else
1866 RETVAL = EIO_ENOSYS ();
1867#endif
1868}
1869 OUTPUT:
1870 RETVAL
1871
1872int
1873tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1874 CODE:
1875#if HAVE_LINUX_SPLICE
1876 RETVAL = tee (rfh, wfh, length, flags);
1877#else
1878 RETVAL = EIO_ENOSYS ();
1879#endif
1880 OUTPUT:
1881 RETVAL
1882
1883int
1884pipesize (aio_rfd rfh, int new_size = -1)
1885 PROTOTYPE: $;$
1886 CODE:
1887#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1888 if (new_size >= 0)
1889 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1890 else
1891 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1892#else
1893 errno = ENOSYS;
1894 RETVAL = -1;
1895#endif
1896 OUTPUT:
1897 RETVAL
1898
1899void _on_next_submit (SV *cb)
1900 CODE:
1901 SvREFCNT_dec (on_next_submit);
1902 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1903
2035PROTOTYPES: DISABLE 1904PROTOTYPES: DISABLE
1905
1906MODULE = IO::AIO PACKAGE = IO::AIO::WD
1907
1908BOOT:
1909{
1910 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1911 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1912}
1913
1914void
1915DESTROY (SV *self)
1916 CODE:
1917{
1918 aio_wd wd = SvAIO_WD (self);
1919#if HAVE_AT
1920 {
1921 SV *callback = &PL_sv_undef;
1922 dREQ; /* clobbers next_pri :/ */
1923 next_pri = req->pri; /* restore next_pri */
1924 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1925 req->type = EIO_WD_CLOSE;
1926 req->wd = wd;
1927 REQ_SEND;
1928 }
1929#else
1930 eio_wd_close_sync (wd);
1931#endif
1932}
2036 1933
2037MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1934MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2038 1935
2039void 1936void
2040cancel (aio_req_ornot req) 1937cancel (aio_req_ornot req)
2041 CODE: 1938 CODE:
2042 req_cancel (req); 1939 eio_cancel (req);
2043 1940
2044void 1941void
2045cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1942cb (aio_req_ornot req, SV *callback = NO_INIT)
2046 CODE: 1943 PPCODE:
1944{
1945 if (GIMME_V != G_VOID)
1946 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1947
1948 if (items > 1)
1949 {
1950 SV *cb_cv = get_cb (callback);
1951
2047 SvREFCNT_dec (req->callback); 1952 SvREFCNT_dec (req->callback);
2048 req->callback = newSVsv (callback); 1953 req->callback = SvREFCNT_inc (cb_cv);
1954 }
1955}
2049 1956
2050MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1957MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2051 1958
2052void 1959void
2053add (aio_req grp, ...) 1960add (aio_req grp, ...)
2054 PPCODE: 1961 PPCODE:
2055{ 1962{
2056 int i; 1963 int i;
2057 aio_req req;
2058
2059 if (main_sig && !block_sig_level)
2060 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2061 1964
2062 if (grp->int1 == 2) 1965 if (grp->int1 == 2)
2063 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1966 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2064 1967
2065 for (i = 1; i < items; ++i ) 1968 for (i = 1; i < items; ++i )
2066 { 1969 {
1970 aio_req req;
1971
2067 if (GIMME_V != G_VOID) 1972 if (GIMME_V != G_VOID)
2068 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1973 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2069 1974
2070 req = SvAIO_REQ (ST (i)); 1975 req = SvAIO_REQ (ST (i));
2071 1976
2072 if (req) 1977 if (req)
2073 { 1978 eio_grp_add (grp, req);
2074 ++grp->size;
2075 req->grp = grp;
2076
2077 req->grp_prev = 0;
2078 req->grp_next = grp->grp_first;
2079
2080 if (grp->grp_first)
2081 grp->grp_first->grp_prev = req;
2082
2083 grp->grp_first = req;
2084 }
2085 } 1979 }
2086} 1980}
2087 1981
2088void 1982void
2089cancel_subs (aio_req_ornot req) 1983cancel_subs (aio_req_ornot req)
… …
2098 AV *av; 1992 AV *av;
2099 1993
2100 grp->errorno = errno; 1994 grp->errorno = errno;
2101 1995
2102 av = newAV (); 1996 av = newAV ();
1997 av_extend (av, items - 1);
2103 1998
2104 for (i = 1; i < items; ++i ) 1999 for (i = 1; i < items; ++i )
2105 av_push (av, newSVsv (ST (i))); 2000 av_push (av, newSVsv (ST (i)));
2106 2001
2107 SvREFCNT_dec (grp->sv1); 2002 SvREFCNT_dec (grp->sv1);
… …
2114 grp->errorno = errorno; 2009 grp->errorno = errorno;
2115 2010
2116void 2011void
2117limit (aio_req grp, int limit) 2012limit (aio_req grp, int limit)
2118 CODE: 2013 CODE:
2119 grp->int2 = limit; 2014 eio_grp_limit (grp, limit);
2120 aio_grp_feed (grp);
2121 2015
2122void 2016void
2123feed (aio_req grp, SV *callback=&PL_sv_undef) 2017feed (aio_req grp, SV *callback = &PL_sv_undef)
2124 CODE: 2018 CODE:
2125{ 2019{
2126 SvREFCNT_dec (grp->sv2); 2020 SvREFCNT_dec (grp->sv2);
2127 grp->sv2 = newSVsv (callback); 2021 grp->sv2 = newSVsv (callback);
2022 grp->feed = aio_grp_feed;
2128 2023
2129 if (grp->int2 <= 0) 2024 if (grp->int2 <= 0)
2130 grp->int2 = 2; 2025 grp->int2 = 2;
2131 2026
2132 aio_grp_feed (grp); 2027 eio_grp_limit (grp, grp->int2);
2133} 2028}
2134 2029

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