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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.287 by root, Tue Dec 29 15:28:02 2020 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
8#include "perliol.h"
16 9
17#include "autoconf/config.h" 10#if !defined mg_findext
18 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
19#include <pthread.h> 12#endif
20 13
21#include <stddef.h> 14#include <stddef.h>
15#include <stdlib.h>
22#include <errno.h> 16#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
26#include <sys/stat.h> 19#include <sys/stat.h>
27#include <limits.h> 20#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 21#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 22#include <sched.h>
32 23
33#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
34# if __linux 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
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
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 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
35# include <sys/sendfile.h> 88 #include <sys/select.h>
36# elif __freebsd 89 #include <sys/wait.h>
90 #include <unistd.h>
91 #include <utime.h>
92 #include <signal.h>
93
94 #define EIO_STRUCT_STAT Stat_t
95
96#endif
97
98/*****************************************************************************/
99
100#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value))
102#else
103# define expect(expr,value) (expr)
104#endif
105
106#define expect_false(expr) expect ((expr) != 0, 0)
107#define expect_true(expr) expect ((expr) != 0, 1)
108
109/*****************************************************************************/
110
111#include "config.h"
112
113#if HAVE_SYS_MKDEV_H
37# include <sys/socket.h> 114# include <sys/mkdev.h>
115#elif HAVE_SYS_SYSMACROS_H
116# include <sys/sysmacros.h>
117#endif
118
119#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
120# include <sys/mman.h>
121#endif
122
123#if HAVE_SYS_UIO_H
38# include <sys/uio.h> 124# include <sys/uio.h>
39# elif __hpux 125#endif
40# include <sys/socket.h> 126
41# elif __solaris /* not yet */ 127#if HAVE_ST_XTIMENSEC
128# define ATIMENSEC PL_statcache.st_atimensec
129# define MTIMENSEC PL_statcache.st_mtimensec
130# define CTIMENSEC PL_statcache.st_ctimensec
131#elif HAVE_ST_XTIMESPEC
132# define ATIMENSEC PL_statcache.st_atim.tv_nsec
133# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
134# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
135#else
136# define ATIMENSEC 0
137# define MTIMENSEC 0
138# define CTIMENSEC 0
139#endif
140
141#if HAVE_ST_BIRTHTIMENSEC
142# define BTIMESEC PL_statcache.st_birthtime
143# define BTIMENSEC PL_statcache.st_birthtimensec
144#elif HAVE_ST_BIRTHTIMESPEC
145# define BTIMESEC PL_statcache.st_birthtim.tv_sec
146# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
147#else
148# define BTIMESEC 0
149# define BTIMENSEC 0
150#endif
151
152#if HAVE_ST_GEN
153# define ST_GEN PL_statcache.st_gen
154#else
155# define ST_GEN 0
156#endif
157
158#include "schmorp.h"
159
160#if HAVE_EVENTFD
42# include <sys/sendfile.h> 161# include <sys/eventfd.h>
162#endif
163
164#if HAVE_TIMERFD
165# include <sys/timerfd.h>
166#endif
167
168#if HAVE_RLIMITS
169 #include <sys/time.h>
170 #include <sys/resource.h>
171#endif
172
173typedef SV SV8; /* byte-sv, used for argument-checking */
174typedef int aio_rfd; /* read file desriptor */
175typedef int aio_wfd; /* write file descriptor */
176
177static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
178
179#define EIO_REQ_MEMBERS \
180 SV *callback; \
181 SV *sv1, *sv2; \
182 SV *sv3, *sv4; \
183 STRLEN stroffset; \
184 SV *self;
185
186#define EIO_NO_WRAPPERS 1
187
188#include "libeio/eio.h"
189
190static int req_invoke (eio_req *req);
191#define EIO_FINISH(req) req_invoke (req)
192static void req_destroy (eio_req *grp);
193#define EIO_DESTROY(req) req_destroy (req)
194
195#include "libeio/eio.c"
196
197#if !HAVE_POSIX_FADVISE
198# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
199#endif
200
201#if !HAVE_POSIX_MADVISE
202# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
203#endif
204
205#ifndef MAP_ANONYMOUS
206# ifdef MAP_ANON
207# define MAP_ANONYMOUS MAP_ANON
43# else 208# else
44# error sendfile support requested but not available 209# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 210# endif
46#endif 211#endif
47 212
48/* number of seconds after which idle threads exit */ 213#ifndef makedev
49#define IDLE_TIMEOUT 10 214# define makedev(maj,min) (((maj) << 8) | (min))
50
51/* used for struct dirent, AIX doesn't provide it */
52#ifndef NAME_MAX
53# define NAME_MAX 4096
54#endif 215#endif
55 216#ifndef major
56#ifndef PTHREAD_STACK_MIN 217# define major(dev) ((dev) >> 8)
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif 218#endif
219#ifndef minor
220# define minor(dev) ((dev) & 0xff)
221#endif
60 222
61#if __ia64 223/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
62# define STACKSIZE 65536 224#ifdef __sun
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 225# undef PAGESIZE
64# define STACKSIZE PTHREAD_STACK_MIN 226#endif
227
228#if PAGESIZE <= 0
229# define PAGESIZE sysconf (_SC_PAGESIZE)
230#endif
231
232#if HAVE_SYSCALL
233#include <sys/syscall.h>
65#else 234#else
66# define STACKSIZE 16384 235# define syscall(nr,...) (errno = ENOSYS, -1)
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif 236#endif
79#endif
80 237
81/* buffer size for various temporary buffers */ 238/*****************************************************************************/
82#define AIO_BUFSIZE 65536
83 239
84#define dBUF \ 240#if !_POSIX_MAPPED_FILES
85 char *aio_buf; \ 241# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
86 LOCK (wrklock); \ 242# define munmap(addr,length) EIO_ENOSYS ()
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 243#endif
88 UNLOCK (wrklock); \ 244
89 if (!aio_buf) \ 245#if !_POSIX_MEMORY_PROTECTION
246# define mprotect(addr,len,prot) EIO_ENOSYS ()
247#endif
248
249#if !MREMAP_MAYMOVE
250# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
251#endif
252
253#define FOREIGN_MAGIC PERL_MAGIC_ext
254
255static int ecb_cold
256mmap_free (pTHX_ SV *sv, MAGIC *mg)
257{
258 int old_errno = errno;
259 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
260 errno = old_errno;
261
262 mg->mg_obj = 0; /* just in case */
263
264 SvREADONLY_off (sv);
265
266 if (SvPVX (sv) != mg->mg_ptr)
267 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
268
269 SvCUR_set (sv, 0);
270 SvPVX (sv) = 0;
271 SvOK_off (sv);
272
90 return -1; 273 return 0;
274}
91 275
92enum { 276static MGVTBL mmap_vtbl = {
93 REQ_QUIT, 277 0, 0, 0, 0, mmap_free
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104}; 278};
105 279
106#define AIO_REQ_KLASS "IO::AIO::REQ" 280static int ecb_cold
107#define AIO_GRP_KLASS "IO::AIO::GRP" 281sysfree_free (pTHX_ SV *sv, MAGIC *mg)
108
109typedef struct aio_cb
110{ 282{
111 struct aio_cb *volatile next; 283 free (mg->mg_ptr);
284 mg->mg_obj = 0; /* just in case */
112 285
113 SV *callback, *fh; 286 SvREADONLY_off (sv);
114 SV *sv1, *sv2;
115 void *ptr1, *ptr2;
116 Stat_t *statdata;
117 off_t offs;
118 size_t size;
119 ssize_t result;
120 287
121 STRLEN stroffset; 288 if (SvPVX (sv) != mg->mg_ptr)
122 int type; 289 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
123 int int1, int2;
124 int errorno;
125 mode_t mode; /* open */
126 290
127 unsigned char flags; 291 SvCUR_set (sv, 0);
128 unsigned char pri; 292 SvPVX (sv) = 0;
293 SvOK_off (sv);
129 294
130 SV *self; /* the perl counterpart of this request, if any */ 295 return 0;
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 296}
132} aio_cb;
133 297
134enum { 298static MGVTBL sysfree_vtbl = {
135 FLAG_CANCELLED = 0x01, 299 0, 0, 0, 0, sysfree_free
136 FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */
137}; 300};
138 301
139typedef aio_cb *aio_req; 302/*****************************************************************************/
140typedef aio_cb *aio_req_ornot;
141 303
142enum { 304/* helper: set scalar to foreign ptr with custom free */
143 PRI_MIN = -4, 305ecb_noinline
144 PRI_MAX = 4, 306static void
145 307sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
146 DEFAULT_PRI = 0,
147 PRI_BIAS = -PRI_MIN,
148 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149};
150
151#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153static unsigned int max_poll_time = 0;
154static unsigned int max_poll_reqs = 0;
155
156/* calculcate time difference in ~1/AIO_TICKS of a second */
157static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158{ 308{
159 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 309 sv_force_normal (sv);
160 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
161}
162 310
163static int next_pri = DEFAULT_PRI + PRI_BIAS; 311 /* we store the length in mg_obj, as namlen is I32 :/ */
312 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
313 ->mg_obj = (SV *)length;
164 314
165static unsigned int started, idle, wanted; 315 SvUPGRADE (sv, SVt_PV); /* nop... */
166 316
167#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 317 if (SvLEN (sv))
168# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 318 Safefree (SvPVX (sv));
169#else
170# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171#endif
172 319
173#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 320 SvPVX (sv) = (char *)addr;
174#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 321 SvCUR_set (sv, length);
322 SvLEN_set (sv, 0);
323 SvPOK_only (sv);
324}
175 325
176/* worker threads management */ 326static void
177static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 327sv_clear_foreign (SV *sv)
178
179typedef struct worker {
180 /* locked by wrklock */
181 struct worker *prev, *next;
182
183 pthread_t tid;
184
185 /* locked by reslock, reqlock or wrklock */
186 aio_req req; /* currently processed request */
187 void *dbuf;
188 DIR *dirp;
189} worker;
190
191static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193static void worker_clear (worker *wrk)
194{ 328{
195 if (wrk->dirp) 329 /* todo: iterate over magic and only free ours, but of course */
330 /* the perl5porters will call that (correct) behaviour buggy */
331 sv_unmagic (sv, FOREIGN_MAGIC);
332}
333
334/*****************************************************************************/
335
336/* defines all sorts of constants to 0 unless they are already defined */
337/* also provides const_iv_ and const_niv_ macros for them */
338#include "def0.h"
339
340/*****************************************************************************/
341
342static void
343fiemap (eio_req *req)
344{
345 req->result = -1;
346
347#if HAVE_FIEMAP
348 /* assume some c99 */
349 struct fiemap *fiemap = 0;
350 size_t end_offset;
351 int count = req->int3;
352
353 req->flags |= EIO_FLAG_PTR1_FREE;
354
355 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
356 /* increase in fixed steps */
357 if (count < 0)
358 count = 8;
359
360 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
361 errno = ENOMEM;
362 if (!fiemap)
363 return;
364
365 req->ptr1 = fiemap;
366
367 fiemap->fm_start = req->offs;
368 fiemap->fm_length = req->size;
369 fiemap->fm_flags = req->int2;
370 fiemap->fm_extent_count = count;
371
372 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
373 return;
374
375 if (req->int3 >= 0 /* not autosizing */
376 || !fiemap->fm_mapped_extents /* no more extents */
377 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
378 goto done;
379
380 /* else we have to loop -
381 * it would be tempting (actually I tried that first) to just query the
382 * number of extents needed, but linux often feels like not returning all
383 * extents, without telling us it left any out. this complicates
384 * this quite a bit.
385 */
386
387 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
388
389 for (;;)
196 { 390 {
197 closedir (wrk->dirp); 391 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
198 wrk->dirp = 0; 392 char scratch[3072];
199 } 393 struct fiemap *incmap = (struct fiemap *)scratch;
200 394
201 if (wrk->dbuf) 395 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
202 { 396 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
203 free (wrk->dbuf); 397 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
204 wrk->dbuf = 0; 398 incmap->fm_flags = fiemap->fm_flags;
205 } 399 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
206}
207 400
208static void worker_free (worker *wrk) 401 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
209{
210 wrk->next->prev = wrk->prev;
211 wrk->prev->next = wrk->next;
212
213 free (wrk);
214}
215
216static volatile unsigned int nreqs, nready, npending;
217static volatile unsigned int max_idle = 4;
218static volatile unsigned int max_outstanding = 0xffffffff;
219static int respipe [2];
220
221static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225#if WORDACCESS_UNSAFE
226
227static unsigned int get_nready ()
228{
229 unsigned int retval;
230
231 LOCK (reqlock);
232 retval = nready;
233 UNLOCK (reqlock);
234
235 return retval;
236}
237
238static unsigned int get_npending ()
239{
240 unsigned int retval;
241
242 LOCK (reslock);
243 retval = npending;
244 UNLOCK (reslock);
245
246 return retval;
247}
248
249static unsigned int get_nthreads ()
250{
251 unsigned int retval;
252
253 LOCK (wrklock);
254 retval = started;
255 UNLOCK (wrklock);
256
257 return retval;
258}
259
260#else
261
262# define get_nready() nready
263# define get_npending() npending
264# define get_nthreads() started
265
266#endif
267
268/*
269 * a somewhat faster data structure might be nice, but
270 * with 8 priorities this actually needs <20 insns
271 * per shift, the most expensive operation.
272 */
273typedef struct {
274 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275 int size;
276} reqq;
277
278static reqq req_queue;
279static reqq res_queue;
280
281int reqq_push (reqq *q, aio_req req)
282{
283 int pri = req->pri;
284 req->next = 0;
285
286 if (q->qe[pri])
287 {
288 q->qe[pri]->next = req;
289 q->qe[pri] = req;
290 }
291 else
292 q->qe[pri] = q->qs[pri] = req;
293
294 return q->size++;
295}
296
297aio_req reqq_shift (reqq *q)
298{
299 int pri;
300
301 if (!q->size)
302 return 0; 402 return;
303 403
304 --q->size; 404 if (!incmap->fm_mapped_extents)
405 goto done;
305 406
306 for (pri = NUM_PRI; pri--; ) 407 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
307 { 408 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
308 aio_req req = q->qs[pri]; 409 errno = ENOMEM;
309
310 if (req) 410 if (!fiemap)
411 return;
412
413 req->ptr1 = fiemap;
414
415 for (count = 0; count < incmap->fm_mapped_extents; ++count)
311 { 416 {
312 if (!(q->qs[pri] = req->next)) 417 struct fiemap_extent *e = incmap->fm_extents + count;
313 q->qe[pri] = 0;
314 418
315 return req; 419 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
420
421 if (e->fe_logical >= end_offset)
422 goto done;
423
424 if (e->fe_flags & FIEMAP_EXTENT_LAST)
425 goto done;
426
316 } 427 }
317 } 428 }
318 429
319 abort (); 430done:
320} 431 req->result = 0;
321 432
322static int poll_cb (); 433#else
323static void req_invoke (aio_req req); 434 errno = ENOSYS;
435#endif
436}
437
438/*****************************************************************************/
439
440static int close_fd; /* dummy fd to close fds via dup2 */
441
442#if HAVE_STATX
443static struct statx stx;
444#define statx_offsetof(member) offsetof (struct statx, member)
445#define eio__statx statx
446#else
447#define statx_offsetof(member) 0
448#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
449#endif
450
451enum {
452 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
453};
454
455typedef eio_req *aio_req;
456typedef eio_req *aio_req_ornot;
457typedef eio_wd aio_wd;
458
459static SV *on_next_submit;
460static int next_pri = EIO_PRI_DEFAULT;
461static int max_outstanding;
462
463static s_epipe respipe;
464
324static void req_free (aio_req req); 465static void req_destroy (aio_req req);
325static void req_cancel (aio_req req); 466static void req_cancel (aio_req req);
326 467
468static void
469want_poll (void)
470{
471 /* write a dummy byte to the pipe so fh becomes ready */
472 s_epipe_signal (&respipe);
473}
474
475static void
476done_poll (void)
477{
478 /* read any signals sent by the worker threads */
479 s_epipe_drain (&respipe);
480}
481
327/* must be called at most once */ 482/* must be called at most once */
328static SV *req_sv (aio_req req, const char *klass) 483ecb_noinline
484static SV *
485req_sv (aio_req req, HV *stash)
329{ 486{
330 if (!req->self) 487 if (!req->self)
331 { 488 {
332 req->self = (SV *)newHV (); 489 req->self = (SV *)newHV ();
333 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 490 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334 } 491 }
335 492
336 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 493 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337} 494}
338 495
339static aio_req SvAIO_REQ (SV *sv) 496static SV *
497newSVaio_wd (aio_wd wd)
498{
499 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
500}
501
502ecb_noinline
503static aio_req
504SvAIO_REQ (SV *sv)
340{ 505{
341 MAGIC *mg; 506 MAGIC *mg;
342 507
343 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 508 if (!SvROK (sv)
509 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
510 || (SvSTASH (SvRV (sv)) != aio_grp_stash
511 && SvSTASH (SvRV (sv)) != aio_req_stash
512 && !sv_derived_from (sv, "IO::AIO::REQ")))
344 croak ("object of class " AIO_REQ_KLASS " expected"); 513 croak ("object of class IO::AIO::REQ expected");
345 514
346 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 515 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347 516
348 return mg ? (aio_req)mg->mg_ptr : 0; 517 return mg ? (aio_req)mg->mg_ptr : 0;
349} 518}
350 519
520static aio_wd
521SvAIO_WD (SV *sv)
522{
523 if (!SvROK (sv)
524 || SvTYPE (SvRV (sv)) != SVt_PVMG
525 || SvSTASH (SvRV (sv)) != aio_wd_stash)
526 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
527
528 return (aio_wd)(long)SvIVX (SvRV (sv));
529}
530
531static SV *
532newmortalFH (int fd, int flags)
533{
534 if (fd < 0)
535 return &PL_sv_undef;
536
537 GV *gv = (GV *)sv_newmortal ();
538 char sym[64];
539 int symlen;
540
541 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
542 gv_init (gv, aio_stash, sym, symlen, 0);
543
544 symlen = snprintf (
545 sym,
546 sizeof (sym),
547 "%s&=%d",
548 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
549 fd
550 );
551
552 return do_open (gv, sym, symlen, 0, 0, 0, 0)
553 ? (SV *)gv : &PL_sv_undef;
554}
555
556static void
351static void aio_grp_feed (aio_req grp) 557aio_grp_feed (aio_req grp)
352{ 558{
353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 559 if (grp->sv2 && SvOK (grp->sv2))
354 { 560 {
355 int old_len = grp->size;
356
357 if (grp->sv2 && SvOK (grp->sv2))
358 {
359 dSP; 561 dSP;
360 562
361 ENTER; 563 ENTER;
362 SAVETMPS; 564 SAVETMPS;
363 PUSHMARK (SP); 565 PUSHMARK (SP);
364 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 566 XPUSHs (req_sv (grp, aio_grp_stash));
365 PUTBACK; 567 PUTBACK;
366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 568 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367 SPAGAIN; 569 SPAGAIN;
368 FREETMPS; 570 FREETMPS;
369 LEAVE; 571 LEAVE;
370 }
371
372 /* stop if no progress has been made */
373 if (old_len == grp->size)
374 {
375 SvREFCNT_dec (grp->sv2);
376 grp->sv2 = 0;
377 break;
378 }
379 } 572 }
380} 573}
381 574
382static void aio_grp_dec (aio_req grp) 575ecb_noinline
576static void
577req_submit (eio_req *req)
383{ 578{
384 --grp->size; 579 eio_submit (req);
385 580
386 /* call feeder, if applicable */ 581 if (expect_false (on_next_submit))
387 aio_grp_feed (grp);
388
389 /* finish, if done */
390 if (!grp->size && grp->int1)
391 { 582 {
392 req_invoke (grp); 583 dSP;
393 req_free (grp); 584 SV *cb = sv_2mortal (on_next_submit);
585
586 on_next_submit = 0;
587
588 PUSHMARK (SP);
589 PUTBACK;
590 call_sv (cb, G_DISCARD | G_EVAL);
394 } 591 }
395} 592}
396 593
594static int
397static void req_invoke (aio_req req) 595req_invoke (eio_req *req)
398{ 596{
399 dSP;
400
401 if (req->flags & FLAG_DATA_RO_OFF) 597 if (req->flags & FLAG_SV2_RO_OFF)
402 SvREADONLY_off (req->sv1); 598 SvREADONLY_off (req->sv2);
403 599
404 if (req->statdata) 600 if (!EIO_CANCELLED (req) && req->callback)
405 { 601 {
406 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 602 dSP;
407 PL_laststatval = req->result; 603 static SV *sv_result_cache; /* caches the result integer SV */
408 PL_statcache = *(req->statdata); 604 SV *sv_result;
409 }
410 605
411 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412 {
413 ENTER; 606 ENTER;
414 SAVETMPS; 607 SAVETMPS;
415 PUSHMARK (SP); 608 PUSHMARK (SP);
416 EXTEND (SP, 1); 609 EXTEND (SP, 1);
417 610
611 /* do not recreate the result IV from scratch each time */
612 if (expect_true (sv_result_cache))
613 {
614 sv_result = sv_result_cache; sv_result_cache = 0;
615 SvIV_set (sv_result, req->result);
616 SvIOK_only (sv_result);
617 }
618 else
619 {
620 sv_result = newSViv (req->result);
621 SvREADONLY_on (sv_result);
622 }
623
418 switch (req->type) 624 switch (req->type)
419 { 625 {
626 case EIO_WD_OPEN:
627 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
628 break;
629
420 case REQ_READDIR: 630 case EIO_READDIR:
421 { 631 {
422 SV *rv = &PL_sv_undef; 632 SV *rv = &PL_sv_undef;
423 633
424 if (req->result >= 0) 634 if (req->result >= 0)
425 { 635 {
426 int i; 636 int i;
427 char *buf = req->ptr2; 637 char *names = (char *)req->ptr2;
638 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428 AV *av = newAV (); 639 AV *av = newAV ();
429 640
430 av_extend (av, req->result - 1); 641 av_extend (av, req->result - 1);
431 642
432 for (i = 0; i < req->result; ++i) 643 for (i = 0; i < req->result; ++i)
433 { 644 {
434 SV *sv = newSVpv (buf, 0); 645 if (req->int1 & EIO_READDIR_DENTS)
646 {
647 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435 648
649 if (req->int1 & EIO_READDIR_CUSTOM2)
650 {
651 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
652 AV *avent = newAV ();
653
654 av_extend (avent, 2);
655
656 if (!sv_type [ent->type])
657 {
658 sv_type [ent->type] = newSViv (ent->type);
659 SvREADONLY_on (sv_type [ent->type]);
660 }
661
662 av_store (avent, 0, namesv);
663 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
664 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
665
666 av_store (av, i, newRV_noinc ((SV *)avent));
667 }
668 else
436 av_store (av, i, sv); 669 av_store (av, i, namesv);
670
671 ++ent;
672 }
673 else
674 {
675 SV *name = newSVpv (names, 0);
676 av_store (av, i, name);
437 buf += SvCUR (sv) + 1; 677 names += SvCUR (name) + 1;
678 }
438 } 679 }
439 680
440 rv = sv_2mortal (newRV_noinc ((SV *)av)); 681 rv = sv_2mortal (newRV_noinc ((SV *)av));
441 } 682 }
442 683
443 PUSHs (rv); 684 PUSHs (rv);
685
686 if (req->int1 & EIO_READDIR_CUSTOM1)
687 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444 } 688 }
445 break; 689 break;
446 690
447 case REQ_OPEN: 691 case EIO_OPEN:
692 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
693 break;
694
695 case EIO_STATVFS:
696 case EIO_FSTATVFS:
448 { 697 {
449 /* convert fd to fh */ 698 SV *rv = &PL_sv_undef;
450 SV *fh; 699
700#ifndef _WIN32
701 if (req->result >= 0)
702 {
703 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
704 HV *hv = newHV ();
705 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
706 * chooses to make it a struct.
707 */
708 unsigned long fsid = 0;
709 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
451 710
452 PUSHs (sv_2mortal (newSViv (req->result))); 711 rv = sv_2mortal (newRV_noinc ((SV *)hv));
453 PUTBACK;
454 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
455 SPAGAIN;
456 712
457 fh = SvREFCNT_inc (POPs); 713 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
714 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
715 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
716 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
717 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
718 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
719 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
720 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
721 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
722 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
723 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
724 }
725#endif
458 726
459 PUSHMARK (SP); 727 PUSHs (rv);
460 XPUSHs (sv_2mortal (fh));
461 } 728 }
729
462 break; 730 break;
463 731
464 case REQ_GROUP: 732 case EIO_GROUP:
465 req->int1 = 2; /* mark group as finished */ 733 req->int1 = 2; /* mark group as finished */
466 734
467 if (req->sv1) 735 if (req->sv1)
468 { 736 {
469 int i; 737 int i;
… …
473 for (i = 0; i <= AvFILL (av); ++i) 741 for (i = 0; i <= AvFILL (av); ++i)
474 PUSHs (*av_fetch (av, i, 0)); 742 PUSHs (*av_fetch (av, i, 0));
475 } 743 }
476 break; 744 break;
477 745
478 case REQ_NOP: 746 case EIO_NOP:
479 case REQ_BUSY: 747 case EIO_BUSY:
480 break; 748 break;
481 749
482 case REQ_READLINK: 750 case EIO_READLINK:
751 case EIO_REALPATH:
483 if (req->result > 0) 752 if (req->result > 0)
753 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
754 break;
755
756 case EIO_STAT:
757 case EIO_LSTAT:
758 case EIO_FSTAT:
759 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
760
761 if (!(PL_laststatval = req->result))
762 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
763 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
764
765 PUSHs (sv_result);
766 break;
767
768 case EIO_SEEK:
769 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
770 break;
771
772 case EIO_READ:
773 {
774 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
775 *SvEND (req->sv2) = 0;
776 SvPOK_only (req->sv2);
777 SvSETMAGIC (req->sv2);
778 PUSHs (sv_result);
779 }
780 break;
781
782 case EIO_SLURP:
783 {
784 if (req->result >= 0)
785 {
786 /* if length was originally not known, we steal the malloc'ed memory */
787 if (req->flags & EIO_FLAG_PTR2_FREE)
788 {
789 req->flags &= ~EIO_FLAG_PTR2_FREE;
790 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
791 }
792 else
793 {
794 SvCUR_set (req->sv2, req->result);
795 *SvEND (req->sv2) = 0;
796 SvPOK_only (req->sv2);
797 }
798
799 SvSETMAGIC (req->sv2);
800 }
801
802 PUSHs (sv_result);
803 }
804 break;
805
806 case EIO_CUSTOM:
807 if (req->feed == fiemap)
484 { 808 {
485 SvCUR_set (req->sv1, req->result); 809#if HAVE_FIEMAP
486 *SvEND (req->sv1) = 0;
487 PUSHs (req->sv1); 810 if (!req->result)
811 {
812 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
813
814 if (fiemap->fm_extent_count)
815 {
816 AV *av = newAV ();
817 int i;
818
819 while (fiemap->fm_mapped_extents)
820 {
821 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
822 AV *ext_av = newAV ();
823
824 av_store (ext_av, 3, newSVuv (extent->fe_flags));
825 av_store (ext_av, 2, newSVval64 (extent->fe_length));
826 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
827 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
828
829 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
830 }
831
832 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
833 }
834 else
835 {
836 SvIV_set (sv_result, fiemap->fm_mapped_extents);
837 PUSHs (sv_result);
838 }
839 }
840#endif
488 } 841 }
842 else
843 PUSHs (sv_result);
489 break; 844 break;
490 845
846#if 0
491 case REQ_READ: 847 case EIO_CLOSE:
492 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 848 PerlIOUnix_refcnt_dec (req->int1);
493 *SvEND (req->sv1) = 0; 849 break;
494 /* fall through */ 850#endif
851
852 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
853 if (req->result > 0)
854 SvIV_set (sv_result, 0);
855 /* FALLTHROUGH */
856
495 default: 857 default:
496 PUSHs (sv_2mortal (newSViv (req->result))); 858 PUSHs (sv_result);
497 break; 859 break;
498 } 860 }
499 861
500 errno = req->errorno; 862 errno = req->errorno;
501 863
502 PUTBACK; 864 PUTBACK;
503 call_sv (req->callback, G_VOID | G_EVAL); 865 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504 SPAGAIN; 866 SPAGAIN;
867
868 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
869 SvREFCNT_dec (sv_result);
870 else
871 sv_result_cache = sv_result;
505 872
506 FREETMPS; 873 FREETMPS;
507 LEAVE; 874 LEAVE;
875
876 PUTBACK;
508 } 877 }
509 878
510 if (req->grp) 879 return !!SvTRUE (ERRSV);
511 {
512 aio_req grp = req->grp;
513
514 /* unlink request */
515 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518 if (grp->grp_first == req)
519 grp->grp_first = req->grp_next;
520
521 aio_grp_dec (grp);
522 }
523
524 if (SvTRUE (ERRSV))
525 {
526 req_free (req);
527 croak (0);
528 }
529} 880}
530 881
531static void req_free (aio_req req) 882static void
883req_destroy (aio_req req)
532{ 884{
533 if (req->self) 885 if (req->self)
534 { 886 {
535 sv_unmagic (req->self, PERL_MAGIC_ext); 887 sv_unmagic (req->self, PERL_MAGIC_ext);
536 SvREFCNT_dec (req->self); 888 SvREFCNT_dec (req->self);
537 } 889 }
538 890
539 SvREFCNT_dec (req->fh);
540 SvREFCNT_dec (req->sv1); 891 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2); 892 SvREFCNT_dec (req->sv2);
893 SvREFCNT_dec (req->sv3);
894 SvREFCNT_dec (req->sv4);
542 SvREFCNT_dec (req->callback); 895 SvREFCNT_dec (req->callback);
543 Safefree (req->statdata);
544 896
545 if (req->type == REQ_READDIR)
546 free (req->ptr2);
547
548 Safefree (req); 897 free (req);
549} 898}
550 899
900static void
551static void req_cancel_subs (aio_req grp) 901req_cancel_subs (aio_req grp)
552{ 902{
553 aio_req sub;
554
555 if (grp->type != REQ_GROUP) 903 if (grp->type != EIO_GROUP)
556 return; 904 return;
557 905
558 SvREFCNT_dec (grp->sv2); 906 SvREFCNT_dec (grp->sv2);
559 grp->sv2 = 0; 907 grp->sv2 = 0;
560 908
561 for (sub = grp->grp_first; sub; sub = sub->grp_next) 909 eio_grp_cancel (grp);
562 req_cancel (sub);
563} 910}
564 911
565static void req_cancel (aio_req req) 912ecb_cold
913static void
914create_respipe (void)
566{ 915{
567 req->flags |= FLAG_CANCELLED; 916 if (s_epipe_renew (&respipe))
568 917 croak ("IO::AIO: unable to initialize result pipe");
569 req_cancel_subs (req);
570} 918}
571 919
572static void *aio_proc(void *arg); 920static void
573 921poll_wait (void)
574static void start_thread (void)
575{ 922{
576 sigset_t fullsigset, oldsigset;
577 pthread_attr_t attr;
578
579 worker *wrk = calloc (1, sizeof (worker));
580
581 if (!wrk)
582 croak ("unable to allocate worker thread data");
583
584 pthread_attr_init (&attr);
585 pthread_attr_setstacksize (&attr, STACKSIZE);
586 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587#ifdef PTHREAD_SCOPE_PROCESS
588 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589#endif
590
591 sigfillset (&fullsigset);
592
593 LOCK (wrklock);
594 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597 {
598 wrk->prev = &wrk_first;
599 wrk->next = wrk_first.next;
600 wrk_first.next->prev = wrk;
601 wrk_first.next = wrk;
602 ++started;
603 }
604 else
605 free (wrk);
606
607 sigprocmask (SIG_SETMASK, &oldsigset, 0);
608 UNLOCK (wrklock);
609}
610
611static void maybe_start_thread ()
612{
613 if (get_nthreads () >= wanted)
614 return;
615
616 /* todo: maybe use idle here, but might be less exact */
617 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618 return;
619
620 start_thread ();
621}
622
623static void req_send (aio_req req)
624{
625 ++nreqs;
626
627 LOCK (reqlock);
628 ++nready;
629 reqq_push (&req_queue, req);
630 pthread_cond_signal (&reqwait);
631 UNLOCK (reqlock);
632
633 maybe_start_thread ();
634}
635
636static void end_thread (void)
637{
638 aio_req req;
639
640 Newz (0, req, 1, aio_cb);
641
642 req->type = REQ_QUIT;
643 req->pri = PRI_MAX + PRI_BIAS;
644
645 LOCK (reqlock);
646 reqq_push (&req_queue, req);
647 pthread_cond_signal (&reqwait);
648 UNLOCK (reqlock);
649
650 LOCK (wrklock);
651 --started;
652 UNLOCK (wrklock);
653}
654
655static void set_max_idle (int nthreads)
656{
657 if (WORDACCESS_UNSAFE) LOCK (reqlock);
658 max_idle = nthreads <= 0 ? 1 : nthreads;
659 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660}
661
662static void min_parallel (int nthreads)
663{
664 if (wanted < nthreads)
665 wanted = nthreads;
666}
667
668static void max_parallel (int nthreads)
669{
670 if (wanted > nthreads)
671 wanted = nthreads;
672
673 while (started > wanted)
674 end_thread ();
675}
676
677static void poll_wait ()
678{
679 fd_set rfd;
680
681 while (nreqs) 923 while (eio_nreqs ())
682 { 924 {
683 int size; 925 int size;
684 if (WORDACCESS_UNSAFE) LOCK (reslock); 926
927 X_LOCK (EIO_POOL->reslock);
685 size = res_queue.size; 928 size = EIO_POOL->res_queue.size;
686 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 929 X_UNLOCK (EIO_POOL->reslock);
687 930
688 if (size) 931 if (size)
689 return; 932 return;
690 933
691 maybe_start_thread (); 934 etp_maybe_start_thread (EIO_POOL);
692 935
693 FD_ZERO(&rfd); 936 s_epipe_wait (&respipe);
694 FD_SET(respipe [0], &rfd);
695
696 select (respipe [0] + 1, &rfd, 0, 0, 0);
697 } 937 }
698} 938}
699 939
700static int poll_cb () 940static int
941poll_cb (void)
701{ 942{
702 dSP;
703 int count = 0;
704 int maxreqs = max_poll_reqs;
705 int do_croak = 0;
706 struct timeval tv_start, tv_now;
707 aio_req req;
708
709 if (max_poll_time)
710 gettimeofday (&tv_start, 0);
711
712 for (;;) 943 for (;;)
713 { 944 {
714 for (;;) 945 int res = eio_poll ();
946
947 if (res > 0)
948 croak (0);
949
950 if (!max_outstanding || max_outstanding > eio_nreqs ())
951 return res;
952
953 poll_wait ();
954 }
955}
956
957ecb_cold
958static void
959reinit (void)
960{
961 create_respipe ();
962
963 if (eio_init (want_poll, done_poll) < 0)
964 croak ("IO::AIO: unable to initialise eio library");
965}
966
967/*****************************************************************************/
968
969static SV *
970get_cb (SV *cb_sv)
971{
972 SvGETMAGIC (cb_sv);
973 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
974}
975
976ecb_noinline
977static aio_req ecb_noinline
978dreq (SV *callback)
979{
980 SV *cb_cv;
981 aio_req req;
982 int req_pri = next_pri;
983 next_pri = EIO_PRI_DEFAULT;
984
985 cb_cv = get_cb (callback);
986
987 req = calloc (sizeof (*req), 1);
988 if (!req)
989 croak ("out of memory during eio_req allocation");
990
991 req->callback = SvREFCNT_inc (cb_cv);
992 req->pri = req_pri;
993
994 return req;
995}
996
997#define dREQ \
998 aio_req req = dreq (callback); \
999
1000#define REQ_SEND \
1001 PUTBACK; \
1002 req_submit (req); \
1003 SPAGAIN; \
1004 \
1005 if (GIMME_V != G_VOID) \
1006 XPUSHs (req_sv (req, aio_req_stash));
1007
1008/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
1009ecb_inline
1010void
1011req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
1012{
1013 if (expect_false (SvROK (path)))
1014 {
1015 SV *rv = SvRV (path);
1016 SV *wdob;
1017
1018 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715 { 1019 {
716 maybe_start_thread (); 1020 path = AvARRAY (rv)[1];
1021 wdob = AvARRAY (rv)[0];
717 1022
718 LOCK (reslock); 1023 if (SvOK (wdob))
719 req = reqq_shift (&res_queue);
720
721 if (req)
722 { 1024 {
723 --npending; 1025 *wd = SvAIO_WD (wdob);
724 1026 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725 if (!res_queue.size)
726 {
727 /* read any signals sent by the worker threads */
728 char buf [32];
729 while (read (respipe [0], buf, 32) == 32)
730 ;
731 }
732 }
733
734 UNLOCK (reslock);
735
736 if (!req)
737 break;
738
739 --nreqs;
740
741 if (req->type == REQ_GROUP && req->size)
742 {
743 req->int1 = 1; /* mark request as delayed */
744 continue;
745 } 1027 }
746 else 1028 else
747 { 1029 *wd = EIO_INVALID_WD;
748 req_invoke (req);
749
750 count++;
751 }
752
753 req_free (req);
754
755 if (maxreqs && !--maxreqs)
756 break;
757
758 if (max_poll_time)
759 {
760 gettimeofday (&tv_now, 0);
761
762 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763 break;
764 }
765 } 1030 }
1031 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1032 {
1033 *wd = (aio_wd)(long)SvIVX (rv);
1034 *wdsv = SvREFCNT_inc_NN (rv);
1035 *ptr = ".";
1036 return; /* path set to "." */
1037 }
1038 else
1039 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1040 }
766 1041
767 if (nreqs <= max_outstanding) 1042 *pathsv = newSVsv (path);
1043 *ptr = SvPVbyte_nolen (*pathsv);
1044}
1045
1046ecb_noinline
1047static void
1048req_set_path1 (aio_req req, SV *path)
1049{
1050 req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1051}
1052
1053ecb_noinline
1054static void
1055req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1056{
1057 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1058
1059 switch (SvTYPE (rv))
1060 {
1061 case SVt_PVIO:
1062 case SVt_PVLV:
1063 case SVt_PVGV:
1064 req->type = type_fh;
1065 req->sv1 = newSVsv (fh_or_path);
1066 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
768 break; 1067 break;
769 1068
770 poll_wait (); 1069 default:
771 1070 req->type = type_path;
772 ++maxreqs; 1071 req_set_path1 (req, fh_or_path);
1072 break;
773 } 1073 }
774
775 return count;
776}
777
778static void create_pipe ()
779{
780 if (pipe (respipe))
781 croak ("unable to initialize result pipe");
782
783 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784 croak ("cannot set result pipe to nonblocking mode");
785
786 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787 croak ("cannot set result pipe to nonblocking mode");
788} 1074}
789 1075
790/*****************************************************************************/ 1076/*****************************************************************************/
791/* work around various missing functions */
792 1077
793#if !HAVE_PREADWRITE 1078static void
794# define pread aio_pread 1079ts_set (struct timespec *ts, NV value)
795# define pwrite aio_pwrite
796
797/*
798 * make our pread/pwrite safe against themselves, but not against
799 * normal read/write by using a mutex. slows down execution a lot,
800 * but that's your problem, not mine.
801 */
802static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805{ 1080{
806 ssize_t res; 1081 ts->tv_sec = value;
807 off_t ooffset; 1082 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
808
809 LOCK (preadwritelock);
810 ooffset = lseek (fd, 0, SEEK_CUR);
811 lseek (fd, offset, SEEK_SET);
812 res = read (fd, buf, count);
813 lseek (fd, ooffset, SEEK_SET);
814 UNLOCK (preadwritelock);
815
816 return res;
817} 1083}
818 1084
819static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1085static NV
1086ts_get (const struct timespec *ts)
820{ 1087{
821 ssize_t res; 1088 return ts->tv_sec + ts->tv_nsec * 1e-9;
822 off_t ooffset;
823
824 LOCK (preadwritelock);
825 ooffset = lseek (fd, 0, SEEK_CUR);
826 lseek (fd, offset, SEEK_SET);
827 res = write (fd, buf, count);
828 lseek (fd, offset, SEEK_SET);
829 UNLOCK (preadwritelock);
830
831 return res;
832} 1089}
833#endif
834 1090
835#if !HAVE_FDATASYNC 1091/*****************************************************************************/
836# define fdatasync fsync
837#endif
838 1092
839#if !HAVE_READAHEAD 1093XS(boot_IO__AIO) ecb_cold;
840# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841 1094
842static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1095MODULE = IO::AIO PACKAGE = IO::AIO
843{
844 dBUF;
845 1096
846 while (count > 0) 1097PROTOTYPES: ENABLE
847 {
848 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849 1098
850 pread (fd, aio_buf, len, offset); 1099BOOT:
851 offset += len;
852 count -= len;
853 }
854
855 errno = 0;
856}
857
858#endif
859
860#if !HAVE_READDIR_R
861# define readdir_r aio_readdir_r
862
863static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866{ 1100{
867 struct dirent *e; 1101 static const struct {
868 int errorno; 1102 const char *name;
1103 IV iv;
1104 } *civ, const_iv[] = {
1105# define const_niv(name, value) { # name, (IV) value },
1106# define const_iv(name) { # name, (IV) name },
1107# define const_eio(name) { # name, (IV) EIO_ ## name },
869 1108
870 LOCK (readdirlock); 1109 /* you have to re-run ./gendef0 after adding/removing any constants here */
1110 /* the first block can be undef if missing */
1111 const_iv (ENOSYS)
1112 const_iv (EXDEV)
1113 const_iv (EBADR)
871 1114
872 e = readdir (dirp); 1115 /* for lseek */
873 errorno = errno; 1116 const_iv (SEEK_DATA)
1117 const_iv (SEEK_HOLE)
874 1118
875 if (e) 1119 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
876 { 1120 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
877 *res = ent; 1121 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
878 strcpy (ent->d_name, e->d_name); 1122 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
879 } 1123 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
880 else 1124 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
881 *res = 0;
882 1125
883 UNLOCK (readdirlock); 1126 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1127 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1128 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1129 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1130 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
884 1131
885 errno = errorno; 1132 /* the second block will be 0 when missing */
886 return e ? 0 : -1; 1133 const_iv (O_ACCMODE)
887}
888#endif
889 1134
890/* sendfile always needs emulation */ 1135 const_iv (O_RDONLY)
891static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1136 const_iv (O_WRONLY)
892{ 1137 const_iv (O_RDWR)
893 ssize_t res; 1138 const_iv (O_CREAT)
1139 const_iv (O_TRUNC)
1140 const_iv (O_EXCL)
1141 const_iv (O_APPEND)
894 1142
895 if (!count) 1143 const_iv (O_ASYNC)
896 return 0; 1144 const_iv (O_DIRECT)
1145 const_iv (O_NOATIME)
897 1146
898#if HAVE_SENDFILE 1147 const_iv (O_CLOEXEC)
899# if __linux 1148 const_iv (O_NOCTTY)
900 res = sendfile (ofd, ifd, &offset, count); 1149 const_iv (O_NOFOLLOW)
1150 const_iv (O_NONBLOCK)
1151 const_iv (O_EXEC)
1152 const_iv (O_SEARCH)
1153 const_iv (O_DIRECTORY)
1154 const_iv (O_DSYNC)
1155 const_iv (O_RSYNC)
1156 const_iv (O_SYNC)
1157 const_iv (O_PATH)
1158 const_iv (O_TMPFILE)
1159 const_iv (O_TTY_INIT)
901 1160
902# elif __freebsd 1161 const_iv (S_IFIFO)
903 /* 1162 const_iv (S_IFCHR)
904 * Of course, the freebsd sendfile is a dire hack with no thoughts 1163 const_iv (S_IFBLK)
905 * wasted on making it similar to other I/O functions. 1164 const_iv (S_IFLNK)
906 */ 1165 const_iv (S_IFREG)
1166 const_iv (S_IFDIR)
1167 const_iv (S_IFWHT)
1168 const_iv (S_IFSOCK)
1169 const_iv (S_IFMT)
1170
1171 const_iv (ST_RDONLY)
1172 const_iv (ST_NOSUID)
1173 const_iv (ST_NODEV)
1174 const_iv (ST_NOEXEC)
1175 const_iv (ST_SYNCHRONOUS)
1176 const_iv (ST_MANDLOCK)
1177 const_iv (ST_WRITE)
1178 const_iv (ST_APPEND)
1179 const_iv (ST_IMMUTABLE)
1180 const_iv (ST_NOATIME)
1181 const_iv (ST_NODIRATIME)
1182 const_iv (ST_RELATIME)
1183
1184 const_iv (PROT_NONE)
1185 const_iv (PROT_EXEC)
1186 const_iv (PROT_READ)
1187 const_iv (PROT_WRITE)
1188
1189 const_iv (MAP_PRIVATE)
1190 const_iv (MAP_SHARED)
1191 const_iv (MAP_FIXED)
1192 const_iv (MAP_ANONYMOUS)
1193
1194 /* linuxish */
1195 const_iv (MAP_LOCKED)
1196 const_iv (MAP_NORESERVE)
1197 const_iv (MAP_POPULATE)
1198 const_iv (MAP_NONBLOCK)
1199 const_iv (MAP_GROWSDOWN)
1200 const_iv (MAP_32BIT)
1201 const_iv (MAP_HUGETLB)
1202 const_iv (MAP_STACK)
1203
1204 const_iv (MREMAP_MAYMOVE)
1205 const_iv (MREMAP_FIXED)
1206
1207 const_iv (MSG_CMSG_CLOEXEC)
1208 const_iv (SOCK_CLOEXEC)
1209
1210 const_iv (F_DUPFD_CLOEXEC)
1211
1212 const_iv (F_ADD_SEALS)
1213 const_iv (F_GET_SEALS)
1214 const_iv (F_SEAL_SEAL)
1215 const_iv (F_SEAL_SHRINK)
1216 const_iv (F_SEAL_GROW)
1217 const_iv (F_SEAL_WRITE)
1218
1219 const_iv (F_OFD_GETLK)
1220 const_iv (F_OFD_SETLK)
1221 const_iv (F_OFD_GETLKW)
1222
1223 const_iv (FIFREEZE)
1224 const_iv (FITHAW)
1225 const_iv (FITRIM)
1226 const_iv (FICLONE)
1227 const_iv (FICLONERANGE)
1228 const_iv (FIDEDUPERANGE)
1229
1230 const_iv (FS_IOC_GETFLAGS)
1231 const_iv (FS_IOC_SETFLAGS)
1232 const_iv (FS_IOC_GETVERSION)
1233 const_iv (FS_IOC_SETVERSION)
1234 const_iv (FS_IOC_FIEMAP)
1235 const_iv (FS_IOC_FSGETXATTR)
1236 const_iv (FS_IOC_FSSETXATTR)
1237 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1238 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1239 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1240
1241 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1242
1243 const_iv (FS_SECRM_FL)
1244 const_iv (FS_UNRM_FL)
1245 const_iv (FS_COMPR_FL)
1246 const_iv (FS_SYNC_FL)
1247 const_iv (FS_IMMUTABLE_FL)
1248 const_iv (FS_APPEND_FL)
1249 const_iv (FS_NODUMP_FL)
1250 const_iv (FS_NOATIME_FL)
1251 const_iv (FS_DIRTY_FL)
1252 const_iv (FS_COMPRBLK_FL)
1253 const_iv (FS_NOCOMP_FL)
1254 const_iv (FS_ENCRYPT_FL)
1255 const_iv (FS_BTREE_FL)
1256 const_iv (FS_INDEX_FL)
1257 const_iv (FS_JOURNAL_DATA_FL)
1258 const_iv (FS_NOTAIL_FL)
1259 const_iv (FS_DIRSYNC_FL)
1260 const_iv (FS_TOPDIR_FL)
1261 const_iv (FS_FL_USER_MODIFIABLE)
1262
1263 const_iv (FS_XFLAG_REALTIME)
1264 const_iv (FS_XFLAG_PREALLOC)
1265 const_iv (FS_XFLAG_IMMUTABLE)
1266 const_iv (FS_XFLAG_APPEND)
1267 const_iv (FS_XFLAG_SYNC)
1268 const_iv (FS_XFLAG_NOATIME)
1269 const_iv (FS_XFLAG_NODUMP)
1270 const_iv (FS_XFLAG_RTINHERIT)
1271 const_iv (FS_XFLAG_PROJINHERIT)
1272 const_iv (FS_XFLAG_NOSYMLINKS)
1273 const_iv (FS_XFLAG_EXTSIZE)
1274 const_iv (FS_XFLAG_EXTSZINHERIT)
1275 const_iv (FS_XFLAG_NODEFRAG)
1276 const_iv (FS_XFLAG_FILESTREAM)
1277 const_iv (FS_XFLAG_DAX)
1278 const_iv (FS_XFLAG_HASATTR)
1279
1280 const_iv (FIEMAP_FLAG_SYNC)
1281 const_iv (FIEMAP_FLAG_XATTR)
1282 const_iv (FIEMAP_FLAGS_COMPAT)
1283 const_iv (FIEMAP_EXTENT_LAST)
1284 const_iv (FIEMAP_EXTENT_UNKNOWN)
1285 const_iv (FIEMAP_EXTENT_DELALLOC)
1286 const_iv (FIEMAP_EXTENT_ENCODED)
1287 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1288 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1289 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1290 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1291 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1292 const_iv (FIEMAP_EXTENT_MERGED)
1293 const_iv (FIEMAP_EXTENT_SHARED)
1294
1295 const_iv (SPLICE_F_MOVE)
1296 const_iv (SPLICE_F_NONBLOCK)
1297 const_iv (SPLICE_F_MORE)
1298 const_iv (SPLICE_F_GIFT)
1299
1300 const_iv (EFD_CLOEXEC)
1301 const_iv (EFD_NONBLOCK)
1302 const_iv (EFD_SEMAPHORE)
1303
1304 const_iv (MFD_CLOEXEC)
1305 const_iv (MFD_ALLOW_SEALING)
1306 const_iv (MFD_HUGETLB)
1307
1308 const_iv (CLOCK_REALTIME)
1309 const_iv (CLOCK_MONOTONIC)
1310 const_iv (CLOCK_BOOTTIME)
1311 const_iv (CLOCK_REALTIME_ALARM)
1312 const_iv (CLOCK_BOOTTIME_ALARM)
1313
1314 const_iv (TFD_NONBLOCK)
1315 const_iv (TFD_CLOEXEC)
1316
1317 const_iv (TFD_TIMER_ABSTIME)
1318 const_iv (TFD_TIMER_CANCEL_ON_SET)
1319
1320 const_iv (STATX_TYPE)
1321 const_iv (STATX_MODE)
1322 const_iv (STATX_NLINK)
1323 const_iv (STATX_UID)
1324 const_iv (STATX_GID)
1325 const_iv (STATX_ATIME)
1326 const_iv (STATX_MTIME)
1327 const_iv (STATX_CTIME)
1328 const_iv (STATX_INO)
1329 const_iv (STATX_SIZE)
1330 const_iv (STATX_BLOCKS)
1331 const_iv (STATX_BASIC_STATS)
1332 const_iv (STATX_ALL)
1333 const_iv (STATX_BTIME)
1334 const_iv (STATX_ATTR_COMPRESSED)
1335 const_iv (STATX_ATTR_IMMUTABLE)
1336 const_iv (STATX_ATTR_APPEND)
1337 const_iv (STATX_ATTR_NODUMP)
1338 const_iv (STATX_ATTR_ENCRYPTED)
1339 const_iv (STATX_ATTR_AUTOMOUNT)
1340
1341 const_iv (AT_FDCWD)
1342 const_iv (AT_SYMLINK_NOFOLLOW)
1343 const_iv (AT_EACCESS)
1344 const_iv (AT_REMOVEDIR)
1345 const_iv (AT_SYMLINK_FOLLOW)
1346 const_iv (AT_NO_AUTOMOUNT)
1347 const_iv (AT_EMPTY_PATH)
1348 const_iv (AT_STATX_SYNC_TYPE)
1349 const_iv (AT_STATX_AS_STAT)
1350 const_iv (AT_STATX_FORCE_SYNC)
1351 const_iv (AT_STATX_DONT_SYNC)
1352 const_iv (AT_RECURSIVE)
1353
1354 const_iv (OPEN_TREE_CLONE)
1355
1356 const_iv (FSOPEN_CLOEXEC)
1357
1358 const_iv (FSPICK_CLOEXEC)
1359 const_iv (FSPICK_SYMLINK_NOFOLLOW)
1360 const_iv (FSPICK_NO_AUTOMOUNT)
1361 const_iv (FSPICK_EMPTY_PATH)
1362
1363 const_iv (MOVE_MOUNT_F_SYMLINKS)
1364 const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
1365 const_iv (MOVE_MOUNT_F_EMPTY_PATH)
1366 const_iv (MOVE_MOUNT_T_SYMLINKS)
1367 const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
1368 const_iv (MOVE_MOUNT_T_EMPTY_PATH)
1369
1370 /* waitid */
1371 const_iv (P_PID)
1372 const_iv (P_PIDFD)
1373 const_iv (P_PGID)
1374 const_iv (P_ALL)
1375
1376 /* these are libeio constants, and are independent of gendef0 */
1377 const_eio (SEEK_SET)
1378 const_eio (SEEK_CUR)
1379 const_eio (SEEK_END)
1380
1381 const_eio (MCL_FUTURE)
1382 const_eio (MCL_CURRENT)
1383 const_eio (MCL_ONFAULT)
1384
1385 const_eio (MS_ASYNC)
1386 const_eio (MS_INVALIDATE)
1387 const_eio (MS_SYNC)
1388
1389 const_eio (MT_MODIFY)
1390
1391 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1392 const_eio (SYNC_FILE_RANGE_WRITE)
1393 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1394
1395 const_eio (FALLOC_FL_KEEP_SIZE)
1396 const_eio (FALLOC_FL_PUNCH_HOLE)
1397 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1398 const_eio (FALLOC_FL_ZERO_RANGE)
1399 const_eio (FALLOC_FL_INSERT_RANGE)
1400 const_eio (FALLOC_FL_UNSHARE_RANGE)
1401
1402 const_eio (RENAME_NOREPLACE)
1403 const_eio (RENAME_EXCHANGE)
1404 const_eio (RENAME_WHITEOUT)
1405
1406 const_eio (READDIR_DENTS)
1407 const_eio (READDIR_DIRS_FIRST)
1408 const_eio (READDIR_STAT_ORDER)
1409 const_eio (READDIR_FOUND_UNKNOWN)
1410
1411 const_eio (DT_UNKNOWN)
1412 const_eio (DT_FIFO)
1413 const_eio (DT_CHR)
1414 const_eio (DT_DIR)
1415 const_eio (DT_BLK)
1416 const_eio (DT_REG)
1417 const_eio (DT_LNK)
1418 const_eio (DT_SOCK)
1419 const_eio (DT_WHT)
1420 };
1421
1422 aio_stash = gv_stashpv ("IO::AIO" , 1);
1423 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1424 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1425 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1426
1427 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1428 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1429
1430 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1431
1432 /* allocate dummy pipe fd for aio_close */
907 { 1433 {
908 off_t sbytes; 1434 int pipefd [2];
909 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910 1435
911 if (res < 0 && sbytes) 1436 if (
912 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1437#ifdef _WIN32
913 res = sbytes; 1438 _pipe (pipefd, 1, _O_BINARY) < 0
1439#else
1440 pipe (pipefd) < 0
1441 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1442#endif
1443 || close (pipefd [1]) < 0
1444 )
1445 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1446
1447 close_fd = pipefd [0];
914 } 1448 }
915 1449
916# elif __hpux 1450 reinit ();
917 res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919# elif __solaris
920 {
921 struct sendfilevec vec;
922 size_t sbytes;
923
924 vec.sfv_fd = ifd;
925 vec.sfv_flag = 0;
926 vec.sfv_off = offset;
927 vec.sfv_len = count;
928
929 res = sendfilev (ofd, &vec, 1, &sbytes);
930
931 if (res < 0 && sbytes)
932 res = sbytes;
933 }
934
935# endif
936#else
937 res = -1;
938 errno = ENOSYS;
939#endif
940
941 if (res < 0
942 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943#if __solaris
944 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
945#endif
946 )
947 )
948 {
949 /* emulate sendfile. this is a major pain in the ass */
950 dBUF;
951
952 res = 0;
953
954 while (count)
955 {
956 ssize_t cnt;
957
958 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959
960 if (cnt <= 0)
961 {
962 if (cnt && !res) res = -1;
963 break;
964 }
965
966 cnt = write (ofd, aio_buf, cnt);
967
968 if (cnt <= 0)
969 {
970 if (cnt && !res) res = -1;
971 break;
972 }
973
974 offset += cnt;
975 res += cnt;
976 count -= cnt;
977 }
978 }
979
980 return res;
981} 1451}
982 1452
983/* read a full directory */
984static void scandir_ (aio_req req, worker *self)
985{
986 DIR *dirp;
987 union
988 {
989 struct dirent d;
990 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991 } *u;
992 struct dirent *entp;
993 char *name, *names;
994 int memlen = 4096;
995 int memofs = 0;
996 int res = 0;
997 int errorno;
998
999 LOCK (wrklock);
1000 self->dirp = dirp = opendir (req->ptr1);
1001 self->dbuf = u = malloc (sizeof (*u));
1002 req->ptr2 = names = malloc (memlen);
1003 UNLOCK (wrklock);
1004
1005 if (dirp && u && names)
1006 for (;;)
1007 {
1008 errno = 0;
1009 readdir_r (dirp, &u->d, &entp);
1010
1011 if (!entp)
1012 break;
1013
1014 name = entp->d_name;
1015
1016 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017 {
1018 int len = strlen (name) + 1;
1019
1020 res++;
1021
1022 while (memofs + len > memlen)
1023 {
1024 memlen *= 2;
1025 LOCK (wrklock);
1026 req->ptr2 = names = realloc (names, memlen);
1027 UNLOCK (wrklock);
1028
1029 if (!names)
1030 break;
1031 }
1032
1033 memcpy (names + memofs, name, len);
1034 memofs += len;
1035 }
1036 }
1037
1038 if (errno)
1039 res = -1;
1040
1041 req->result = res;
1042}
1043
1044/*****************************************************************************/
1045
1046static void *aio_proc (void *thr_arg)
1047{
1048 aio_req req;
1049 struct timespec ts;
1050 worker *self = (worker *)thr_arg;
1051
1052 /* try to distribute timeouts somewhat evenly */
1053 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054 * (1000000000UL / 1024UL);
1055
1056 for (;;)
1057 {
1058 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060 LOCK (reqlock);
1061
1062 for (;;)
1063 {
1064 self->req = req = reqq_shift (&req_queue);
1065
1066 if (req)
1067 break;
1068
1069 ++idle;
1070
1071 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072 == ETIMEDOUT)
1073 {
1074 if (idle > max_idle)
1075 {
1076 --idle;
1077 UNLOCK (reqlock);
1078 LOCK (wrklock);
1079 --started;
1080 UNLOCK (wrklock);
1081 goto quit;
1082 }
1083
1084 /* we are allowed to idle, so do so without any timeout */
1085 pthread_cond_wait (&reqwait, &reqlock);
1086 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087 }
1088
1089 --idle;
1090 }
1091
1092 --nready;
1093
1094 UNLOCK (reqlock);
1095
1096 errno = 0; /* strictly unnecessary */
1097
1098 if (!(req->flags & FLAG_CANCELLED))
1099 switch (req->type)
1100 {
1101 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107 case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108 case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109 case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112 case REQ_CLOSE: req->result = close (req->int1); break;
1113 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122 case REQ_FSYNC: req->result = fsync (req->int1); break;
1123 case REQ_READDIR: scandir_ (req, self); break;
1124
1125 case REQ_BUSY:
1126 {
1127 struct timeval tv;
1128
1129 tv.tv_sec = req->int1;
1130 tv.tv_usec = req->int2;
1131
1132 req->result = select (0, 0, 0, 0, &tv);
1133 }
1134
1135 case REQ_GROUP:
1136 case REQ_NOP:
1137 break;
1138
1139 case REQ_QUIT:
1140 goto quit;
1141
1142 default:
1143 req->result = ENOSYS;
1144 break;
1145 }
1146
1147 req->errorno = errno;
1148
1149 LOCK (reslock);
1150
1151 ++npending;
1152
1153 if (!reqq_push (&res_queue, req))
1154 /* write a dummy byte to the pipe so fh becomes ready */
1155 write (respipe [1], &respipe, 1);
1156
1157 self->req = 0;
1158 worker_clear (self);
1159
1160 UNLOCK (reslock);
1161 }
1162
1163quit:
1164 LOCK (wrklock);
1165 worker_free (self);
1166 UNLOCK (wrklock);
1167
1168 return 0;
1169}
1170
1171/*****************************************************************************/
1172
1173static void atfork_prepare (void)
1174{
1175 LOCK (wrklock);
1176 LOCK (reqlock);
1177 LOCK (reslock);
1178#if !HAVE_PREADWRITE
1179 LOCK (preadwritelock);
1180#endif
1181#if !HAVE_READDIR_R
1182 LOCK (readdirlock);
1183#endif
1184}
1185
1186static void atfork_parent (void)
1187{
1188#if !HAVE_READDIR_R
1189 UNLOCK (readdirlock);
1190#endif
1191#if !HAVE_PREADWRITE
1192 UNLOCK (preadwritelock);
1193#endif
1194 UNLOCK (reslock);
1195 UNLOCK (reqlock);
1196 UNLOCK (wrklock);
1197}
1198
1199static void atfork_child (void)
1200{
1201 aio_req prv;
1202
1203 while (prv = reqq_shift (&req_queue))
1204 req_free (prv);
1205
1206 while (prv = reqq_shift (&res_queue))
1207 req_free (prv);
1208
1209 while (wrk_first.next != &wrk_first)
1210 {
1211 worker *wrk = wrk_first.next;
1212
1213 if (wrk->req)
1214 req_free (wrk->req);
1215
1216 worker_clear (wrk);
1217 worker_free (wrk);
1218 }
1219
1220 started = 0;
1221 idle = 0;
1222 nreqs = 0;
1223 nready = 0;
1224 npending = 0;
1225
1226 close (respipe [0]);
1227 close (respipe [1]);
1228 create_pipe ();
1229
1230 atfork_parent ();
1231}
1232
1233#define dREQ \
1234 aio_req req; \
1235 int req_pri = next_pri; \
1236 next_pri = DEFAULT_PRI + PRI_BIAS; \
1237 \
1238 if (SvOK (callback) && !SvROK (callback)) \
1239 croak ("callback must be undef or of reference type"); \
1240 \
1241 Newz (0, req, 1, aio_cb); \
1242 if (!req) \
1243 croak ("out of memory during aio_req allocation"); \
1244 \
1245 req->callback = newSVsv (callback); \
1246 req->pri = req_pri
1247
1248#define REQ_SEND \
1249 req_send (req); \
1250 \
1251 if (GIMME_V != G_VOID) \
1252 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1253
1254MODULE = IO::AIO PACKAGE = IO::AIO
1255
1256PROTOTYPES: ENABLE
1257
1258BOOT:
1259{
1260 HV *stash = gv_stashpv ("IO::AIO", 1);
1261
1262 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1263 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1264 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268
1269 create_pipe ();
1270 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1271}
1272
1273void 1453void
1454reinit ()
1455 PROTOTYPE:
1456
1457void
1274max_poll_reqs (int nreqs) 1458max_poll_reqs (unsigned int nreqs)
1275 PROTOTYPE: $ 1459 PROTOTYPE: $
1276 CODE: 1460 CODE:
1277 max_poll_reqs = nreqs; 1461 eio_set_max_poll_reqs (nreqs);
1278 1462
1279void 1463void
1280max_poll_time (double nseconds) 1464max_poll_time (double nseconds)
1281 PROTOTYPE: $ 1465 PROTOTYPE: $
1282 CODE: 1466 CODE:
1283 max_poll_time = nseconds * AIO_TICKS; 1467 eio_set_max_poll_time (nseconds);
1284 1468
1285void 1469void
1286min_parallel (int nthreads) 1470min_parallel (unsigned int nthreads)
1287 PROTOTYPE: $
1288
1289void
1290max_parallel (int nthreads)
1291 PROTOTYPE: $
1292
1293void
1294max_idle (int nthreads)
1295 PROTOTYPE: $ 1471 PROTOTYPE: $
1296 CODE: 1472 CODE:
1297 set_max_idle (nthreads); 1473 eio_set_min_parallel (nthreads);
1298 1474
1299int 1475void
1300max_outstanding (int maxreqs) 1476max_parallel (unsigned int nthreads)
1301 PROTOTYPE: $ 1477 PROTOTYPE: $
1302 CODE: 1478 CODE:
1303 RETVAL = max_outstanding; 1479 eio_set_max_parallel (nthreads);
1480
1481void
1482max_idle (unsigned int nthreads)
1483 PROTOTYPE: $
1484 CODE:
1485 eio_set_max_idle (nthreads);
1486
1487void
1488idle_timeout (unsigned int seconds)
1489 PROTOTYPE: $
1490 CODE:
1491 eio_set_idle_timeout (seconds);
1492
1493void
1494max_outstanding (unsigned int maxreqs)
1495 PROTOTYPE: $
1496 CODE:
1304 max_outstanding = maxreqs; 1497 max_outstanding = maxreqs;
1305 OUTPUT:
1306 RETVAL
1307 1498
1308void 1499void
1309aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1500aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1310 SV * pathname
1311 int flags
1312 int mode
1313 SV * callback
1314 PROTOTYPE: $$$;$
1315 PPCODE: 1501 PPCODE:
1316{ 1502{
1317 dREQ; 1503 dREQ;
1318 1504
1505 req->type = EIO_WD_OPEN;
1506 req_set_path1 (req, pathname);
1507
1508 REQ_SEND;
1509}
1510
1511void
1512aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1513 PPCODE:
1514{
1515 dREQ;
1516
1319 req->type = REQ_OPEN; 1517 req->type = EIO_OPEN;
1320 req->sv1 = newSVsv (pathname); 1518 req_set_path1 (req, pathname);
1321 req->ptr1 = SvPVbyte_nolen (pathname);
1322 req->int1 = flags; 1519 req->int1 = flags;
1323 req->mode = mode; 1520 req->int2 = mode;
1324 1521
1325 REQ_SEND; 1522 REQ_SEND;
1326} 1523}
1327 1524
1328void 1525void
1329aio_close (fh,callback=&PL_sv_undef) 1526aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1330 SV * fh
1331 SV * callback
1332 PROTOTYPE: $;$
1333 ALIAS: 1527 ALIAS:
1334 aio_close = REQ_CLOSE
1335 aio_fsync = REQ_FSYNC 1528 aio_fsync = EIO_FSYNC
1336 aio_fdatasync = REQ_FDATASYNC 1529 aio_fdatasync = EIO_FDATASYNC
1530 aio_syncfs = EIO_SYNCFS
1337 PPCODE: 1531 PPCODE:
1338{ 1532{
1533 int fd = s_fileno_croak (fh, 0);
1339 dREQ; 1534 dREQ;
1340 1535
1341 req->type = ix; 1536 req->type = ix;
1342 req->fh = newSVsv (fh); 1537 req->sv1 = newSVsv (fh);
1343 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1538 req->int1 = fd;
1344 1539
1345 REQ_SEND (req); 1540 REQ_SEND;
1346} 1541}
1347 1542
1348void 1543void
1544aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1545 PPCODE:
1546{
1547 int fd = s_fileno_croak (fh, 0);
1548 dREQ;
1549
1550 req->type = EIO_SYNC_FILE_RANGE;
1551 req->sv1 = newSVsv (fh);
1552 req->int1 = fd;
1553 req->offs = offset;
1554 req->size = nbytes;
1555 req->int2 = flags;
1556
1557 REQ_SEND;
1558}
1559
1560void
1561aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1562 PPCODE:
1563{
1564 int fd = s_fileno_croak (fh, 0);
1565 dREQ;
1566
1567 req->type = EIO_FALLOCATE;
1568 req->sv1 = newSVsv (fh);
1569 req->int1 = fd;
1570 req->int2 = mode;
1571 req->offs = offset;
1572 req->size = len;
1573
1574 REQ_SEND;
1575}
1576
1577void
1578aio_close (SV *fh, SV *callback = &PL_sv_undef)
1579 PPCODE:
1580{
1581 int fd = s_fileno_croak (fh, 0);
1582 dREQ;
1583#if 0
1584 /* partially duplicate logic in s_fileno */
1585 SvGETMAGIC (fh);
1586
1587 if (SvROK (fh))
1588 {
1589 fh = SvRV (fh);
1590 SvGETMAGIC (fh);
1591 }
1592
1593 if (SvTYPE (fh) == SVt_PVGV)
1594 {
1595 /* perl filehandle */
1596 PerlIOUnix_refcnt_inc (fd);
1597 do_close ((GV *)fh, 1);
1598
1599 req->type = EIO_CLOSE;
1600 req->int1 = fd;
1601 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1602 }
1603 else
1604#endif
1605 {
1606 /* fd number */
1607 req->type = EIO_DUP2;
1608 req->int1 = close_fd;
1609 req->sv2 = newSVsv (fh);
1610 req->int2 = fd;
1611 }
1612
1613 REQ_SEND;
1614}
1615
1616void
1617aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1618 PPCODE:
1619{
1620 int fd = s_fileno_croak (fh, 0);
1621 dREQ;
1622
1623 req->type = EIO_SEEK;
1624 req->sv1 = newSVsv (fh);
1625 req->int1 = fd;
1626 req->offs = SvVAL64 (offset);
1627 req->int2 = whence;
1628
1629 REQ_SEND;
1630}
1631
1632void
1349aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1633aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1350 SV * fh
1351 UV offset
1352 UV length
1353 SV * data
1354 UV dataoffset
1355 SV * callback
1356 ALIAS: 1634 ALIAS:
1357 aio_read = REQ_READ 1635 aio_read = EIO_READ
1358 aio_write = REQ_WRITE 1636 aio_write = EIO_WRITE
1359 PROTOTYPE: $$$$$;$
1360 PPCODE: 1637 PPCODE:
1361{ 1638{
1362 STRLEN svlen; 1639 STRLEN svlen;
1640 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363 char *svptr = SvPVbyte (data, svlen); 1641 char *svptr = SvPVbyte (data, svlen);
1364 1642 UV len = SvUV (length);
1365 SvUPGRADE (data, SVt_PV);
1366 SvPOK_on (data);
1367 1643
1368 if (dataoffset < 0) 1644 if (dataoffset < 0)
1369 dataoffset += svlen; 1645 dataoffset += svlen;
1370 1646
1371 if (dataoffset < 0 || dataoffset > svlen) 1647 if (dataoffset < 0 || dataoffset > svlen)
1372 croak ("data offset outside of string"); 1648 croak ("dataoffset outside of data scalar");
1373 1649
1374 if (ix == REQ_WRITE) 1650 if (ix == EIO_WRITE)
1375 { 1651 {
1376 /* write: check length and adjust. */ 1652 /* write: check length and adjust. */
1377 if (length < 0 || length + dataoffset > svlen) 1653 if (!SvOK (length) || len + dataoffset > svlen)
1378 length = svlen - dataoffset; 1654 len = svlen - dataoffset;
1379 } 1655 }
1380 else 1656 else
1381 { 1657 {
1382 /* read: grow scalar as necessary */ 1658 /* read: check type and grow scalar as necessary */
1659 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1383 svptr = SvGROW (data, length + dataoffset); 1660 svptr = sv_grow (data, len + dataoffset + 1);
1661 else if (SvCUR (data) < len + dataoffset)
1662 croak ("length + dataoffset outside of scalar, and cannot grow");
1384 } 1663 }
1385
1386 if (length < 0)
1387 croak ("length must not be negative");
1388 1664
1389 { 1665 {
1390 dREQ; 1666 dREQ;
1391 1667
1392 req->type = ix; 1668 req->type = ix;
1393 req->fh = newSVsv (fh); 1669 req->sv1 = newSVsv (fh);
1394 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1670 req->int1 = fd;
1395 : IoOFP (sv_2io (fh))); 1671 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396 req->offs = offset;
1397 req->size = length; 1672 req->size = len;
1398 req->sv1 = SvREFCNT_inc (data); 1673 req->sv2 = SvREFCNT_inc (data);
1399 req->ptr1 = (char *)svptr + dataoffset; 1674 req->ptr2 = (char *)svptr + dataoffset;
1400 req->stroffset = dataoffset; 1675 req->stroffset = dataoffset;
1401 1676
1402 if (!SvREADONLY (data)) 1677 if (!SvREADONLY (data))
1403 { 1678 {
1404 SvREADONLY_on (data); 1679 SvREADONLY_on (data);
1405 req->flags |= FLAG_DATA_RO_OFF; 1680 req->flags |= FLAG_SV2_RO_OFF;
1406 } 1681 }
1407 1682
1408 REQ_SEND; 1683 REQ_SEND;
1409 } 1684 }
1410} 1685}
1411 1686
1412void 1687void
1413aio_readlink (path,callback=&PL_sv_undef) 1688aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1414 SV * path 1689 ALIAS:
1415 SV * callback 1690 aio_ioctl = EIO_IOCTL
1416 PROTOTYPE: $$;$ 1691 aio_fcntl = EIO_FCNTL
1417 PPCODE: 1692 PPCODE:
1418{ 1693{
1419 SV *data; 1694 int fd = s_fileno_croak (fh, 0);
1695 char *svptr;
1696
1697 if (SvPOK (arg) || !SvNIOK (arg))
1698 {
1699 STRLEN svlen;
1700 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1701#ifdef IOCPARM_LEN
1702 STRLEN need = IOCPARM_LEN (request);
1703#else
1704 STRLEN need = 256;
1705#endif
1706
1707 if (svlen < need)
1708 svptr = SvGROW (arg, need);
1709 }
1710 else
1711 svptr = (char *)SvIV (arg);
1712
1713 {
1714 dREQ;
1715
1716 req->type = ix;
1717 req->sv1 = newSVsv (fh);
1718 req->int1 = fd;
1719 req->int2 = (long)request;
1720 req->sv2 = SvREFCNT_inc (arg);
1721 req->ptr2 = svptr;
1722
1723 REQ_SEND;
1724 }
1725}
1726
1727void
1728aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1729 ALIAS:
1730 aio_readlink = EIO_READLINK
1731 aio_realpath = EIO_REALPATH
1732 PPCODE:
1733{
1420 dREQ; 1734 dREQ;
1421 1735
1422 data = newSV (NAME_MAX);
1423 SvPOK_on (data);
1424
1425 req->type = REQ_READLINK; 1736 req->type = ix;
1426 req->fh = newSVsv (path); 1737 req_set_path1 (req, pathname);
1427 req->ptr2 = SvPVbyte_nolen (path);
1428 req->sv1 = data;
1429 req->ptr1 = SvPVbyte_nolen (data);
1430 1738
1431 REQ_SEND; 1739 REQ_SEND;
1432} 1740}
1433 1741
1434void 1742void
1435aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1743aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1436 SV * out_fh
1437 SV * in_fh
1438 UV in_offset
1439 UV length
1440 SV * callback
1441 PROTOTYPE: $$$$;$
1442 PPCODE: 1744 PPCODE:
1443{ 1745{
1746 int ifd = s_fileno_croak (in_fh , 0);
1747 int ofd = s_fileno_croak (out_fh, 1);
1444 dREQ; 1748 dREQ;
1445 1749
1446 req->type = REQ_SENDFILE; 1750 req->type = EIO_SENDFILE;
1447 req->fh = newSVsv (out_fh); 1751 req->sv1 = newSVsv (out_fh);
1448 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1752 req->int1 = ofd;
1449 req->sv2 = newSVsv (in_fh); 1753 req->sv2 = newSVsv (in_fh);
1450 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1754 req->int2 = ifd;
1451 req->offs = in_offset; 1755 req->offs = in_offset;
1452 req->size = length; 1756 req->size = length;
1453 1757
1454 REQ_SEND; 1758 REQ_SEND;
1455} 1759}
1456 1760
1457void 1761void
1458aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1762aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1459 SV * fh
1460 UV offset
1461 IV length
1462 SV * callback
1463 PROTOTYPE: $$$;$
1464 PPCODE: 1763 PPCODE:
1465{ 1764{
1765 int fd = s_fileno_croak (fh, 0);
1466 dREQ; 1766 dREQ;
1467 1767
1468 req->type = REQ_READAHEAD; 1768 req->type = EIO_READAHEAD;
1469 req->fh = newSVsv (fh); 1769 req->sv1 = newSVsv (fh);
1470 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1770 req->int1 = fd;
1471 req->offs = offset; 1771 req->offs = offset;
1472 req->size = length; 1772 req->size = length;
1473 1773
1474 REQ_SEND; 1774 REQ_SEND;
1475} 1775}
1476 1776
1477void 1777void
1478aio_stat (fh_or_path,callback=&PL_sv_undef) 1778aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1479 SV * fh_or_path
1480 SV * callback
1481 ALIAS: 1779 ALIAS:
1482 aio_stat = REQ_STAT 1780 aio_stat = EIO_STAT
1483 aio_lstat = REQ_LSTAT 1781 aio_lstat = EIO_LSTAT
1782 aio_statvfs = EIO_STATVFS
1484 PPCODE: 1783 PPCODE:
1485{ 1784{
1486 dREQ; 1785 dREQ;
1487 1786
1488 New (0, req->statdata, 1, Stat_t); 1787 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1489 if (!req->statdata)
1490 {
1491 req_free (req);
1492 croak ("out of memory during aio_req->statdata allocation");
1493 }
1494
1495 if (SvPOK (fh_or_path))
1496 {
1497 req->type = ix;
1498 req->sv1 = newSVsv (fh_or_path);
1499 req->ptr1 = SvPVbyte_nolen (fh_or_path);
1500 }
1501 else
1502 {
1503 req->type = REQ_FSTAT;
1504 req->fh = newSVsv (fh_or_path);
1505 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506 }
1507 1788
1508 REQ_SEND; 1789 REQ_SEND;
1509} 1790}
1510 1791
1511void 1792void
1793st_xtime ()
1794 ALIAS:
1795 st_atime = 0x01
1796 st_mtime = 0x02
1797 st_ctime = 0x04
1798 st_btime = 0x08
1799 st_xtime = 0x0f
1800 PPCODE:
1801 EXTEND (SP, 4);
1802 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1803 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1804 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1805 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1806
1807void
1808st_xtimensec ()
1809 ALIAS:
1810 st_atimensec = 0x01
1811 st_mtimensec = 0x02
1812 st_ctimensec = 0x04
1813 st_btimensec = 0x08
1814 st_xtimensec = 0x0f
1815 st_btimesec = 0x10
1816 st_gen = 0x20
1817 PPCODE:
1818 EXTEND (SP, 4);
1819 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1820 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1821 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1822 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1823 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1824 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1825
1826UV
1827major (UV dev)
1828 ALIAS:
1829 minor = 1
1830 CODE:
1831 RETVAL = ix ? minor (dev) : major (dev);
1832 OUTPUT:
1833 RETVAL
1834
1835UV
1836makedev (UV maj, UV min)
1837 CODE:
1838 RETVAL = makedev (maj, min);
1839 OUTPUT:
1840 RETVAL
1841
1842void
1843aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1844 PPCODE:
1845{
1846 dREQ;
1847
1848 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1849 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1850 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1851
1852 REQ_SEND;
1853}
1854
1855void
1856aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1857 PPCODE:
1858{
1859 dREQ;
1860
1861 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1862 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1863
1864 REQ_SEND;
1865}
1866
1867void
1868aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1869 PPCODE:
1870{
1871 dREQ;
1872
1873 req->int2 = mode;
1874 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1875
1876 REQ_SEND;
1877}
1878
1879void
1880aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1881 PPCODE:
1882{
1883 dREQ;
1884
1885 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1886 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1887 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1888
1889 REQ_SEND;
1890}
1891
1892void
1893aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1894 PPCODE:
1895{
1896 dREQ;
1897
1898 req->type = EIO_READDIR;
1899 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1900
1901 if (flags & EIO_READDIR_DENTS)
1902 req->int1 |= EIO_READDIR_CUSTOM2;
1903
1904 req_set_path1 (req, pathname);
1905
1906 REQ_SEND;
1907}
1908
1909void
1910aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1911 PPCODE:
1912{
1913 dREQ;
1914
1915 req->type = EIO_MKDIR;
1916 req->int2 = mode;
1917 req_set_path1 (req, pathname);
1918
1919 REQ_SEND;
1920}
1921
1922void
1512aio_unlink (pathname,callback=&PL_sv_undef) 1923aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1513 SV * pathname
1514 SV * callback
1515 ALIAS: 1924 ALIAS:
1516 aio_unlink = REQ_UNLINK 1925 aio_unlink = EIO_UNLINK
1517 aio_rmdir = REQ_RMDIR 1926 aio_rmdir = EIO_RMDIR
1518 aio_readdir = REQ_READDIR 1927 aio_readdir = EIO_READDIR
1519 PPCODE: 1928 PPCODE:
1520{ 1929{
1521 dREQ; 1930 dREQ;
1522 1931
1523 req->type = ix; 1932 req->type = ix;
1524 req->sv1 = newSVsv (pathname); 1933 req_set_path1 (req, pathname);
1525 req->ptr1 = SvPVbyte_nolen (pathname); 1934
1526
1527 REQ_SEND; 1935 REQ_SEND;
1528} 1936}
1529 1937
1530void 1938void
1531aio_link (oldpath,newpath,callback=&PL_sv_undef) 1939aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1532 SV * oldpath
1533 SV * newpath
1534 SV * callback
1535 ALIAS: 1940 ALIAS:
1536 aio_link = REQ_LINK 1941 aio_link = EIO_LINK
1537 aio_symlink = REQ_SYMLINK 1942 aio_symlink = EIO_SYMLINK
1538 aio_rename = REQ_RENAME 1943 aio_rename = EIO_RENAME
1539 PPCODE: 1944 PPCODE:
1540{ 1945{
1946 eio_wd wd2 = 0;
1541 dREQ; 1947 dREQ;
1542 1948
1543 req->type = ix; 1949 req->type = ix;
1544 req->fh = newSVsv (oldpath); 1950 req_set_path1 (req, oldpath);
1545 req->ptr2 = SvPVbyte_nolen (req->fh); 1951 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1546 req->sv1 = newSVsv (newpath); 1952 req->int3 = (long)wd2;
1547 req->ptr1 = SvPVbyte_nolen (newpath);
1548 1953
1549 REQ_SEND; 1954 REQ_SEND;
1550} 1955}
1551 1956
1552void 1957void
1553aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1958aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1554 SV * pathname
1555 SV * callback
1556 UV mode
1557 UV dev
1558 PPCODE: 1959 PPCODE:
1559{ 1960{
1961 eio_wd wd2 = 0;
1560 dREQ; 1962 dREQ;
1561 1963
1562 req->type = REQ_MKNOD; 1964 req->type = EIO_RENAME;
1563 req->sv1 = newSVsv (pathname); 1965 req_set_path1 (req, oldpath);
1564 req->ptr1 = SvPVbyte_nolen (pathname); 1966 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1565 req->mode = (mode_t)mode; 1967 req->int2 = flags;
1566 req->offs = dev; 1968 req->int3 = (long)wd2;
1567 1969
1568 REQ_SEND; 1970 REQ_SEND;
1569} 1971}
1570 1972
1571void 1973void
1572aio_busy (delay,callback=&PL_sv_undef) 1974aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1573 double delay
1574 SV * callback
1575 PPCODE: 1975 PPCODE:
1576{ 1976{
1577 dREQ; 1977 dREQ;
1578 1978
1579 req->type = REQ_BUSY; 1979 req->type = EIO_MKNOD;
1580 req->int1 = delay < 0. ? 0 : delay; 1980 req->int2 = (mode_t)mode;
1581 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1981 req->offs = dev;
1582 1982 req_set_path1 (req, pathname);
1983
1583 REQ_SEND; 1984 REQ_SEND;
1584} 1985}
1585 1986
1586void 1987void
1587aio_group (callback=&PL_sv_undef) 1988aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1588 SV * callback 1989 ALIAS:
1589 PROTOTYPE: ;$ 1990 aio_mtouch = EIO_MTOUCH
1991 aio_msync = EIO_MSYNC
1590 PPCODE: 1992 PPCODE:
1591{ 1993{
1994 STRLEN svlen;
1995 char *svptr = SvPVbyte (data, svlen);
1996 UV len = SvUV (length);
1997
1998 if (flags < 0)
1999 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
2000
2001 if (offset < 0)
2002 offset += svlen;
2003
2004 if (offset < 0 || offset > svlen)
2005 croak ("offset outside of scalar");
2006
2007 if (!SvOK (length) || len + offset > svlen)
2008 len = svlen - offset;
2009
2010 {
2011 dREQ;
2012
2013 req->type = ix;
2014 req->sv2 = SvREFCNT_inc (data);
2015 req->ptr2 = (char *)svptr + offset;
2016 req->size = len;
2017 req->int1 = flags;
2018
2019 REQ_SEND;
2020 }
2021}
2022
2023void
2024aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
2025 PPCODE:
2026{
2027 STRLEN svlen;
2028 char *svptr = SvPVbyte (data, svlen);
2029 UV len = SvUV (length);
2030
2031 if (offset < 0)
2032 offset += svlen;
2033
2034 if (offset < 0 || offset > svlen)
2035 croak ("offset outside of scalar");
2036
2037 if (!SvOK (length) || len + offset > svlen)
2038 len = svlen - offset;
2039
2040 {
2041 dREQ;
2042
2043 req->type = EIO_MLOCK;
2044 req->sv2 = SvREFCNT_inc (data);
2045 req->ptr2 = (char *)svptr + offset;
2046 req->size = len;
2047
2048 REQ_SEND;
2049 }
2050}
2051
2052void
2053aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
2054 PPCODE:
2055{
2056 dREQ;
2057
2058 req->type = EIO_MLOCKALL;
2059 req->int1 = flags;
2060
2061 REQ_SEND;
2062}
2063
2064void
2065aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
2066 PPCODE:
2067{
2068 int fd = s_fileno_croak (fh, 0);
1592 dREQ; 2069 dREQ;
1593 2070
1594 req->type = REQ_GROUP; 2071 req->type = EIO_CUSTOM;
2072 req->sv1 = newSVsv (fh);
2073 req->int1 = fd;
1595 2074
1596 req_send (req); 2075 req->feed = fiemap;
1597 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2076#if HAVE_FIEMAP
1598} 2077 /* keep our fingers crossed that the next two types are 64 bit */
2078 req->offs = start;
2079 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
2080 req->int2 = flags;
2081 req->int3 = SvOK (count) ? SvIV (count) : -1;
2082#endif
1599 2083
2084 REQ_SEND;
2085}
2086
1600void 2087void
1601aio_nop (callback=&PL_sv_undef) 2088aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1602 SV * callback 2089 PPCODE:
2090{
2091 char *svptr = 0;
2092
2093 sv_clear_foreign (data);
2094
2095 if (length) /* known length, directly read into scalar */
2096 {
2097 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2098 svptr = sv_grow (data, length + 1);
2099 else if (SvCUR (data) < length)
2100 croak ("length outside of scalar, and cannot grow");
2101 else
2102 svptr = SvPVbyte_nolen (data);
2103 }
2104
2105 {
2106 dREQ;
2107
2108 req->type = EIO_SLURP;
2109 req_set_path1 (req, pathname);
2110 req->offs = offset;
2111 req->size = length;
2112 req->sv2 = SvREFCNT_inc (data);
2113 req->ptr2 = svptr;
2114
2115 if (!SvREADONLY (data))
2116 {
2117 SvREADONLY_on (data);
2118 req->flags |= FLAG_SV2_RO_OFF;
2119 }
2120
2121 REQ_SEND;
2122 }
2123}
2124
2125void
2126aio_busy (double delay, SV *callback = &PL_sv_undef)
1603 PPCODE: 2127 PPCODE:
1604{ 2128{
1605 dREQ; 2129 dREQ;
1606 2130
1607 req->type = REQ_NOP; 2131 req->type = EIO_BUSY;
2132 req->nv1 = delay < 0. ? 0. : delay;
1608 2133
1609 REQ_SEND; 2134 REQ_SEND;
1610} 2135}
1611 2136
2137void
2138aio_group (SV *callback = &PL_sv_undef)
2139 PPCODE:
2140{
2141 dREQ;
2142
2143 req->type = EIO_GROUP;
2144
2145 PUTBACK;
2146 req_submit (req);
2147 SPAGAIN;
2148
2149 XPUSHs (req_sv (req, aio_grp_stash));
2150}
2151
2152void
2153aio_nop (SV *callback = &PL_sv_undef)
2154 ALIAS:
2155 aio_nop = EIO_NOP
2156 aio_sync = EIO_SYNC
2157 PPCODE:
2158{
2159 dREQ;
2160
2161 req->type = ix;
2162
2163 REQ_SEND;
2164}
2165
1612int 2166int
1613aioreq_pri (int pri = 0) 2167aioreq_pri (int pri = NO_INIT)
1614 PROTOTYPE: ;$
1615 CODE: 2168 CODE:
1616 RETVAL = next_pri - PRI_BIAS; 2169 RETVAL = next_pri;
1617 if (items > 0) 2170 if (items > 0)
1618 { 2171 {
1619 if (pri < PRI_MIN) pri = PRI_MIN; 2172 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620 if (pri > PRI_MAX) pri = PRI_MAX; 2173 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621 next_pri = pri + PRI_BIAS; 2174 next_pri = pri;
1622 } 2175 }
1623 OUTPUT: 2176 OUTPUT:
1624 RETVAL 2177 RETVAL
1625 2178
1626void 2179void
1627aioreq_nice (int nice = 0) 2180aioreq_nice (int nice = 0)
1628 CODE: 2181 CODE:
1629 nice = next_pri - nice; 2182 nice = next_pri - nice;
1630 if (nice < PRI_MIN) nice = PRI_MIN; 2183 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631 if (nice > PRI_MAX) nice = PRI_MAX; 2184 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632 next_pri = nice + PRI_BIAS; 2185 next_pri = nice;
1633 2186
1634void 2187void
1635flush () 2188flush ()
1636 PROTOTYPE:
1637 CODE: 2189 CODE:
1638 while (nreqs) 2190 while (eio_nreqs ())
1639 { 2191 {
1640 poll_wait (); 2192 poll_wait ();
1641 poll_cb (0); 2193 poll_cb ();
1642 } 2194 }
1643 2195
1644void 2196int
1645poll() 2197poll ()
1646 PROTOTYPE:
1647 CODE: 2198 CODE:
1648 if (nreqs)
1649 {
1650 poll_wait (); 2199 poll_wait ();
1651 poll_cb (0); 2200 RETVAL = poll_cb ();
1652 }
1653
1654int
1655poll_fileno()
1656 PROTOTYPE:
1657 CODE:
1658 RETVAL = respipe [0];
1659 OUTPUT: 2201 OUTPUT:
1660 RETVAL 2202 RETVAL
1661 2203
1662int 2204int
2205poll_fileno ()
2206 CODE:
2207 RETVAL = s_epipe_fd (&respipe);
2208 OUTPUT:
2209 RETVAL
2210
2211int
1663poll_cb(...) 2212poll_cb (...)
1664 PROTOTYPE: 2213 PROTOTYPE:
1665 CODE: 2214 CODE:
1666 RETVAL = poll_cb (); 2215 RETVAL = poll_cb ();
1667 OUTPUT: 2216 OUTPUT:
1668 RETVAL 2217 RETVAL
1669 2218
1670void 2219void
1671poll_wait() 2220poll_wait ()
2221 CODE:
2222 poll_wait ();
2223
2224int
2225nreqs ()
2226 CODE:
2227 RETVAL = eio_nreqs ();
2228 OUTPUT:
2229 RETVAL
2230
2231int
2232nready ()
2233 CODE:
2234 RETVAL = eio_nready ();
2235 OUTPUT:
2236 RETVAL
2237
2238int
2239npending ()
2240 CODE:
2241 RETVAL = eio_npending ();
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246nthreads ()
2247 CODE:
2248 RETVAL = eio_nthreads ();
2249 OUTPUT:
2250 RETVAL
2251
2252int
2253fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2254 CODE:
2255 RETVAL = posix_fadvise (fh, offset, length, advice);
2256 OUTPUT:
2257 RETVAL
2258
2259IV
2260sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2261 CODE:
2262 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2263 OUTPUT:
2264 RETVAL
2265
2266void
2267mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2268 PPCODE:
2269 sv_clear_foreign (scalar);
2270{
2271 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2272 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2273 if (addr == (void *)-1)
2274 XSRETURN_NO;
2275
2276 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2277
2278 if (!(prot & PROT_WRITE))
2279 SvREADONLY_on (scalar);
2280
2281 XSRETURN_YES;
2282}
2283
2284void
2285munmap (SV *scalar)
2286 CODE:
2287 sv_clear_foreign (scalar);
2288
2289SV *
2290mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2291 CODE:
2292{
2293 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2294 void *new;
2295
2296 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2297 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2298
2299 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2300
2301 RETVAL = &PL_sv_no;
2302
2303 if (new != (void *)-1)
2304 {
2305 RETVAL = new == (void *)mg->mg_ptr
2306 ? newSVpvn ("0 but true", 10)
2307 : &PL_sv_yes;
2308
2309 mg->mg_ptr = (char *)new;
2310 mg->mg_obj = (SV *)new_length;
2311
2312 SvPVX (scalar) = mg->mg_ptr;
2313 SvCUR_set (scalar, new_length);
2314 }
2315}
2316 OUTPUT:
2317 RETVAL
2318
2319int
2320madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2321 ALIAS:
2322 mprotect = 1
2323 CODE:
2324{
2325 STRLEN svlen;
2326 void *addr = SvPVbyte (scalar, svlen);
2327 STRLEN len = SvUV (length);
2328
2329 if (offset < 0)
2330 offset += svlen;
2331
2332 if (offset < 0 || offset > svlen)
2333 croak ("offset outside of scalar");
2334
2335 if (!SvOK (length) || len + offset > svlen)
2336 len = svlen - offset;
2337
2338 addr = (void *)(((intptr_t)addr) + offset);
2339 eio_page_align (&addr, &len);
2340
2341 switch (ix)
2342 {
2343 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2344 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2345 }
2346}
2347 OUTPUT:
2348 RETVAL
2349
2350int
2351munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2352 CODE:
2353{
2354 STRLEN svlen;
2355 void *addr = SvPVbyte (scalar, svlen);
2356 size_t len = SvUV (length);
2357
2358 if (offset < 0)
2359 offset += svlen;
2360
2361 if (offset < 0 || offset > svlen)
2362 croak ("offset outside of scalar");
2363
2364 if (!SvOK (length) || len + offset > svlen)
2365 len = svlen - offset;
2366
2367 addr = (void *)(((intptr_t)addr) + offset);
2368 eio_page_align (&addr, &len);
2369#if _POSIX_MEMLOCK_RANGE
2370 RETVAL = munlock (addr, len);
2371#else
2372 RETVAL = EIO_ENOSYS ();
2373#endif
2374}
2375 OUTPUT:
2376 RETVAL
2377
2378int
2379mlockall (int flags)
2380 PROTOTYPE: $;
2381 CODE:
2382 RETVAL = eio_mlockall_sync (flags);
2383 OUTPUT:
2384 RETVAL
2385
2386int
2387munlockall ()
2388 CODE:
2389#if _POSIX_MEMLOCK
2390 munlockall ();
2391#else
2392 RETVAL = EIO_ENOSYS ();
2393#endif
2394 OUTPUT:
2395 RETVAL
2396
2397int
2398statx (SV8 *pathname, int flags, UV mask)
2399 CODE:
2400{
2401 /* undocumented, and might go away, and anyway, should use eio_statx */
2402 SV *wdsv = 0;
2403 SV *pathsv = 0;
2404 eio_wd wd = EIO_CWD;
2405 void *ptr;
2406 int res;
2407
2408 req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
2409 RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
2410
2411 SvREFCNT_dec (pathsv);
2412 SvREFCNT_dec (wdsv);
2413}
2414 OUTPUT:
2415 RETVAL
2416
2417U32
2418stx_mode ()
1672 PROTOTYPE: 2419 PROTOTYPE:
1673 CODE: 2420 CODE:
2421#if HAVE_STATX
2422 RETVAL = stx.stx_mode;
2423#else
2424 XSRETURN_UNDEF;
2425#endif
2426 OUTPUT:
2427 RETVAL
2428
2429#define STATX_OFFSET_mask statx_offsetof (stx_mask)
2430#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
2431#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
2432#define STATX_OFFSET_uid statx_offsetof (stx_uid)
2433#define STATX_OFFSET_gid statx_offsetof (stx_gid)
2434#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
2435#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
2436#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
2437#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
2438#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
2439#define STATX_OFFSET_ino statx_offsetof (stx_ino)
2440#define STATX_OFFSET_size statx_offsetof (stx_size)
2441#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
2442#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
2443#define STATX_OFFSET_atime statx_offsetof (stx_atime)
2444#define STATX_OFFSET_btime statx_offsetof (stx_btime)
2445#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
2446#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
2447
2448U32
2449stx_mask ()
2450 PROTOTYPE:
2451 ALIAS:
2452 stx_mask = STATX_OFFSET_mask
2453 stx_blksize = STATX_OFFSET_blksize
2454 stx_nlink = STATX_OFFSET_nlink
2455 stx_uid = STATX_OFFSET_uid
2456 stx_gid = STATX_OFFSET_gid
2457 stx_rdev_major = STATX_OFFSET_rdev_major
2458 stx_rdev_minor = STATX_OFFSET_rdev_minor
2459 stx_dev_major = STATX_OFFSET_dev_major
2460 stx_dev_minor = STATX_OFFSET_dev_minor
2461 CODE:
2462#if HAVE_STATX
2463 RETVAL = *(__u32 *)((char *)&stx + ix);
2464#else
2465 XSRETURN_UNDEF;
2466#endif
2467 OUTPUT:
2468 RETVAL
2469
2470VAL64
2471stx_attributes ()
2472 PROTOTYPE:
2473 ALIAS:
2474 stx_attributes = STATX_OFFSET_attributes
2475 stx_ino = STATX_OFFSET_ino
2476 stx_size = STATX_OFFSET_size
2477 stx_blocks = STATX_OFFSET_blocks
2478 stx_attributes_mask = STATX_OFFSET_attributes_mask
2479 CODE:
2480#if HAVE_STATX
2481 RETVAL = *(__u64 *)((char *)&stx + ix);
2482#else
2483 XSRETURN_UNDEF;
2484#endif
2485 OUTPUT:
2486 RETVAL
2487
2488NV
2489stx_atime ()
2490 PROTOTYPE:
2491 ALIAS:
2492 stx_atime = STATX_OFFSET_atime
2493 stx_btime = STATX_OFFSET_btime
2494 stx_ctime = STATX_OFFSET_ctime
2495 stx_mtime = STATX_OFFSET_mtime
2496 CODE:
2497#if HAVE_STATX
2498 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2499 RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
2500#else
2501 XSRETURN_UNDEF;
2502#endif
2503 OUTPUT:
2504 RETVAL
2505
2506VAL64
2507stx_atimesec ()
2508 PROTOTYPE:
2509 ALIAS:
2510 stx_atimesec = STATX_OFFSET_atime
2511 stx_btimesec = STATX_OFFSET_btime
2512 stx_ctimesec = STATX_OFFSET_ctime
2513 stx_mtimesec = STATX_OFFSET_mtime
2514 CODE:
2515#if HAVE_STATX
2516 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2517 RETVAL = ts->tv_sec;
2518#else
2519 XSRETURN_UNDEF;
2520#endif
2521 OUTPUT:
2522 RETVAL
2523
2524U32
2525stx_atimensec ()
2526 PROTOTYPE:
2527 ALIAS:
2528 stx_atimensec = STATX_OFFSET_atime
2529 stx_btimensec = STATX_OFFSET_btime
2530 stx_ctimensec = STATX_OFFSET_ctime
2531 stx_mtimensec = STATX_OFFSET_mtime
2532 CODE:
2533#if HAVE_STATX
2534 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2535 RETVAL = ts->tv_nsec;
2536#else
2537 RETVAL = 0;
2538#endif
2539 OUTPUT:
2540 RETVAL
2541
2542void
2543accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
2544 PPCODE:
2545{
2546 SV *retval;
2547#if HAVE_ACCEPT4
2548 socklen_t salen_ = salen ? salen + 1 : 0;
2549
1674 if (nreqs) 2550 if (salen)
1675 poll_wait (); 2551 {
2552 sv_upgrade (sockaddr, SVt_PV);
2553 sv_grow (sockaddr, salen_);
2554 }
2555
2556 int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
2557
2558 retval = newmortalFH (res, O_RDWR);
2559
2560 if (res >= 0 && salen > 0)
2561 {
2562 if (salen_ > salen + 1)
2563 salen_ = salen + 1;
2564
2565 SvPOK_only (sockaddr);
2566 SvCUR_set (sockaddr, salen_);
2567 }
2568#else
2569 errno = ENOSYS;
2570 retval = &PL_sv_undef;
2571#endif
2572 XPUSHs (retval);
2573}
2574
2575ssize_t
2576splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2577 CODE:
2578{
2579#if HAVE_LINUX_SPLICE
2580 loff_t off_in_, off_out_;
2581 RETVAL = splice (
2582 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2583 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2584 length, flags
2585 );
2586#else
2587 RETVAL = EIO_ENOSYS ();
2588#endif
2589}
2590 OUTPUT:
2591 RETVAL
2592
2593ssize_t
2594tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2595 CODE:
2596#if HAVE_LINUX_SPLICE
2597 RETVAL = tee (rfh, wfh, length, flags);
2598#else
2599 RETVAL = EIO_ENOSYS ();
2600#endif
2601 OUTPUT:
2602 RETVAL
1676 2603
1677int 2604int
1678nreqs() 2605pipesize (aio_rfd rfh, int new_size = -1)
2606 PROTOTYPE: $;$
2607 CODE:
2608#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2609 if (new_size >= 0)
2610 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2611 else
2612 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2613#else
2614 errno = ENOSYS;
2615 RETVAL = -1;
2616#endif
2617 OUTPUT:
2618 RETVAL
2619
2620void
2621pipe2 (int flags = 0)
1679 PROTOTYPE: 2622 PROTOTYPE: ;$
2623 PPCODE:
2624{
2625 int fd[2];
2626 int res;
2627
2628 if (flags)
2629#if HAVE_PIPE2
2630 res = pipe2 (fd, flags);
2631#else
2632 res = (errno = ENOSYS, -1);
2633#endif
2634 else
2635 res = pipe (fd);
2636
2637 if (!res)
2638 {
2639 EXTEND (SP, 2);
2640 PUSHs (newmortalFH (fd[0], O_RDONLY));
2641 PUSHs (newmortalFH (fd[1], O_WRONLY));
2642 }
2643}
2644
2645void
2646pidfd_open (int pid, unsigned int flags = 0)
2647 PPCODE:
2648{
2649 /*GENDEF0_SYSCALL(pidfd_open,434)*/
2650 int fd = syscall (SYS_pidfd_open, pid, flags);
2651 XPUSHs (newmortalFH (fd, O_RDWR));
2652}
2653
2654int
2655pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
2656 PPCODE:
2657{
2658 int res;
2659 siginfo_t si = { 0 };
2660
2661 if (SvOK (siginfo))
2662 {
2663 HV *hv;
2664 SV **svp;
2665
2666 if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
2667 croak ("siginfo argument must be a hashref code, pid, uid and value_int or value_ptr members, caught");
2668
2669 hv = (HV *)SvRV (siginfo);
2670
2671 if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
2672 if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
2673 if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
2674 if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
2675 if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
2676 }
2677
2678 /*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
2679 res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
2680
2681 XPUSHs (sv_2mortal (newSViv (res)));
2682}
2683
2684void
2685pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
2686 PPCODE:
2687{
2688 /*GENDEF0_SYSCALL(pidfd_getfd,438)*/
2689 int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
2690 XPUSHs (newmortalFH (fd, O_RDWR));
2691}
2692
2693void
2694eventfd (unsigned int initval = 0, int flags = 0)
2695 PPCODE:
2696{
2697 int fd;
2698#if HAVE_EVENTFD
2699 fd = eventfd (initval, flags);
2700#else
2701 fd = (errno = ENOSYS, -1);
2702#endif
2703
2704 XPUSHs (newmortalFH (fd, O_RDWR));
2705}
2706
2707void
2708timerfd_create (int clockid, int flags = 0)
2709 PPCODE:
2710{
2711 int fd;
2712#if HAVE_TIMERFD
2713 fd = timerfd_create (clockid, flags);
2714#else
2715 fd = (errno = ENOSYS, -1);
2716#endif
2717
2718 XPUSHs (newmortalFH (fd, O_RDWR));
2719}
2720
2721void
2722timerfd_settime (SV *fh, int flags, NV interval, NV value)
2723 PPCODE:
2724{
2725 int fd = s_fileno_croak (fh, 0);
2726#if HAVE_TIMERFD
2727 int res;
2728 struct itimerspec its, ots;
2729
2730 ts_set (&its.it_interval, interval);
2731 ts_set (&its.it_value , value);
2732 res = timerfd_settime (fd, flags, &its, &ots);
2733
2734 if (!res)
2735 {
2736 EXTEND (SP, 2);
2737 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2738 PUSHs (newSVnv (ts_get (&ots.it_value)));
2739 }
2740#else
2741 errno = ENOSYS;
2742#endif
2743}
2744
2745void
2746timerfd_gettime (SV *fh)
2747 PPCODE:
2748{
2749 int fd = s_fileno_croak (fh, 0);
2750#if HAVE_TIMERFD
2751 int res;
2752 struct itimerspec ots;
2753 res = timerfd_gettime (fd, &ots);
2754
2755 if (!res)
2756 {
2757 EXTEND (SP, 2);
2758 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2759 PUSHs (newSVnv (ts_get (&ots.it_value)));
2760 }
2761#else
2762 errno = ENOSYS;
2763#endif
2764}
2765
2766void
2767memfd_create (SV8 *pathname, int flags = 0)
2768 PPCODE:
2769{
2770 int fd;
2771#if HAVE_MEMFD_CREATE
2772 fd = memfd_create (SvPVbyte_nolen (pathname), flags);
2773#else
2774 fd = (errno = ENOSYS, -1);
2775#endif
2776
2777 XPUSHs (newmortalFH (fd, O_RDWR));
2778}
2779
2780UV
2781get_fdlimit ()
1680 CODE: 2782 CODE:
1681 RETVAL = nreqs; 2783#if HAVE_RLIMITS
2784 struct rlimit rl;
2785 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2786 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2787#endif
2788 XSRETURN_UNDEF;
1682 OUTPUT: 2789 OUTPUT:
1683 RETVAL 2790 RETVAL
1684 2791
1685int 2792void
1686nready() 2793min_fdlimit (UV limit = 0x7fffffffU)
1687 PROTOTYPE:
1688 CODE: 2794 CODE:
1689 RETVAL = get_nready (); 2795{
1690 OUTPUT: 2796#if HAVE_RLIMITS
1691 RETVAL 2797 struct rlimit rl;
2798 rlim_t orig_rlim_max;
2799 UV bit;
1692 2800
1693int 2801 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
1694npending() 2802 goto fail;
1695 PROTOTYPE: 2803
2804 if (rl.rlim_cur == RLIM_INFINITY)
2805 XSRETURN_YES;
2806
2807 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2808
2809 if (rl.rlim_cur < limit)
2810 {
2811 rl.rlim_cur = limit;
2812
2813 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2814 rl.rlim_max = rl.rlim_cur;
2815 }
2816
2817 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2818 XSRETURN_YES;
2819
2820 if (errno == EPERM)
2821 {
2822 /* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2823 /* our limit overflows a system-wide limit */
2824 /* try an adaptive algorithm, but do not lower the hardlimit */
2825 rl.rlim_max = 0;
2826 for (bit = 0x40000000U; bit; bit >>= 1)
2827 {
2828 rl.rlim_max |= bit;
2829 rl.rlim_cur = rl.rlim_max;
2830
2831 /* never decrease the hard limit */
2832 if (rl.rlim_max < orig_rlim_max)
2833 break;
2834
2835 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2836 rl.rlim_max &= ~bit; /* too high, remove bit again */
2837 }
2838
2839 /* now, raise the soft limit to the max permitted */
2840 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2841 {
2842 rl.rlim_cur = rl.rlim_max;
2843 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2844 errno = EPERM;
2845 }
2846 }
2847#endif
2848 fail:
2849 XSRETURN_UNDEF;
2850}
2851
2852void _on_next_submit (SV *cb)
1696 CODE: 2853 CODE:
1697 RETVAL = get_npending (); 2854 SvREFCNT_dec (on_next_submit);
1698 OUTPUT: 2855 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1699 RETVAL
1700 2856
1701int 2857PROTOTYPES: DISABLE
1702nthreads() 2858
1703 PROTOTYPE: 2859MODULE = IO::AIO PACKAGE = IO::AIO::WD
2860
2861BOOT:
2862{
2863 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2864 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2865}
2866
2867void
2868DESTROY (SV *self)
1704 CODE: 2869 CODE:
1705 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2870{
1706 RETVAL = started; 2871 aio_wd wd = SvAIO_WD (self);
1707 if (WORDACCESS_UNSAFE) UNLOCK (wrklock); 2872#if HAVE_AT
1708 OUTPUT: 2873 {
1709 RETVAL 2874 SV *callback = &PL_sv_undef;
1710 2875 dREQ; /* clobbers next_pri :/ */
1711PROTOTYPES: DISABLE 2876 next_pri = req->pri; /* restore next_pri */
2877 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2878 req->type = EIO_WD_CLOSE;
2879 req->wd = wd;
2880 REQ_SEND;
2881 }
2882#else
2883 eio_wd_close_sync (wd);
2884#endif
2885}
1712 2886
1713MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2887MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714 2888
1715void 2889void
1716cancel (aio_req_ornot req) 2890cancel (aio_req_ornot req)
1717 CODE: 2891 CODE:
1718 req_cancel (req); 2892 eio_cancel (req);
1719 2893
1720void 2894void
1721cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2895cb (aio_req_ornot req, SV *callback = NO_INIT)
1722 CODE: 2896 PPCODE:
2897{
2898 if (GIMME_V != G_VOID)
2899 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2900
2901 if (items > 1)
2902 {
2903 SV *cb_cv = get_cb (callback);
2904
1723 SvREFCNT_dec (req->callback); 2905 SvREFCNT_dec (req->callback);
1724 req->callback = newSVsv (callback); 2906 req->callback = SvREFCNT_inc (cb_cv);
2907 }
2908}
1725 2909
1726MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2910MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727 2911
1728void 2912void
1729add (aio_req grp, ...) 2913add (aio_req grp, ...)
1730 PPCODE: 2914 PPCODE:
1731{ 2915{
1732 int i; 2916 int i;
1733 aio_req req;
1734 2917
1735 if (grp->int1 == 2) 2918 if (grp->int1 == 2)
1736 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2919 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737 2920
1738 for (i = 1; i < items; ++i ) 2921 for (i = 1; i < items; ++i )
1739 { 2922 {
2923 aio_req req;
2924
1740 if (GIMME_V != G_VOID) 2925 if (GIMME_V != G_VOID)
1741 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2926 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742 2927
1743 req = SvAIO_REQ (ST (i)); 2928 req = SvAIO_REQ (ST (i));
1744 2929
1745 if (req) 2930 if (req)
1746 { 2931 eio_grp_add (grp, req);
1747 ++grp->size;
1748 req->grp = grp;
1749
1750 req->grp_prev = 0;
1751 req->grp_next = grp->grp_first;
1752
1753 if (grp->grp_first)
1754 grp->grp_first->grp_prev = req;
1755
1756 grp->grp_first = req;
1757 }
1758 } 2932 }
1759} 2933}
1760 2934
1761void 2935void
1762cancel_subs (aio_req_ornot req) 2936cancel_subs (aio_req_ornot req)
… …
1771 AV *av; 2945 AV *av;
1772 2946
1773 grp->errorno = errno; 2947 grp->errorno = errno;
1774 2948
1775 av = newAV (); 2949 av = newAV ();
2950 av_extend (av, items - 1);
1776 2951
1777 for (i = 1; i < items; ++i ) 2952 for (i = 1; i < items; ++i )
1778 av_push (av, newSVsv (ST (i))); 2953 av_push (av, newSVsv (ST (i)));
1779 2954
1780 SvREFCNT_dec (grp->sv1); 2955 SvREFCNT_dec (grp->sv1);
… …
1787 grp->errorno = errorno; 2962 grp->errorno = errorno;
1788 2963
1789void 2964void
1790limit (aio_req grp, int limit) 2965limit (aio_req grp, int limit)
1791 CODE: 2966 CODE:
1792 grp->int2 = limit; 2967 eio_grp_limit (grp, limit);
1793 aio_grp_feed (grp);
1794 2968
1795void 2969void
1796feed (aio_req grp, SV *callback=&PL_sv_undef) 2970feed (aio_req grp, SV *callback = &PL_sv_undef)
1797 CODE: 2971 CODE:
1798{ 2972{
1799 SvREFCNT_dec (grp->sv2); 2973 SvREFCNT_dec (grp->sv2);
1800 grp->sv2 = newSVsv (callback); 2974 grp->sv2 = newSVsv (callback);
2975 grp->feed = aio_grp_feed;
1801 2976
1802 if (grp->int2 <= 0) 2977 if (grp->int2 <= 0)
1803 grp->int2 = 2; 2978 grp->int2 = 2;
1804 2979
1805 aio_grp_feed (grp); 2980 eio_grp_limit (grp, grp->int2);
1806} 2981}
1807 2982

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