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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 2006 UTC vs.
Revision 1.285 by root, Tue Dec 29 15:16:28 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 <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
37# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
119# include <sys/mman.h>
120#endif
121
122#if HAVE_SYS_UIO_H
38# include <sys/uio.h> 123# include <sys/uio.h>
39# elif __hpux 124#endif
40# include <sys/socket.h> 125
41# elif __solaris /* not yet */ 126#if HAVE_ST_XTIMENSEC
127# define ATIMENSEC PL_statcache.st_atimensec
128# define MTIMENSEC PL_statcache.st_mtimensec
129# define CTIMENSEC PL_statcache.st_ctimensec
130#elif HAVE_ST_XTIMESPEC
131# define ATIMENSEC PL_statcache.st_atim.tv_nsec
132# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
133# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
134#else
135# define ATIMENSEC 0
136# define MTIMENSEC 0
137# define CTIMENSEC 0
138#endif
139
140#if HAVE_ST_BIRTHTIMENSEC
141# define BTIMESEC PL_statcache.st_birthtime
142# define BTIMENSEC PL_statcache.st_birthtimensec
143#elif HAVE_ST_BIRTHTIMESPEC
144# define BTIMESEC PL_statcache.st_birthtim.tv_sec
145# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
146#else
147# define BTIMESEC 0
148# define BTIMENSEC 0
149#endif
150
151#if HAVE_ST_GEN
152# define ST_GEN PL_statcache.st_gen
153#else
154# define ST_GEN 0
155#endif
156
157#include "schmorp.h"
158
159#if HAVE_EVENTFD
42# include <sys/sendfile.h> 160# include <sys/eventfd.h>
161#endif
162
163#if HAVE_TIMERFD
164# include <sys/timerfd.h>
165#endif
166
167#if HAVE_RLIMITS
168 #include <sys/time.h>
169 #include <sys/resource.h>
170#endif
171
172typedef SV SV8; /* byte-sv, used for argument-checking */
173typedef int aio_rfd; /* read file desriptor */
174typedef int aio_wfd; /* write file descriptor */
175
176static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
177
178#define EIO_REQ_MEMBERS \
179 SV *callback; \
180 SV *sv1, *sv2; \
181 SV *sv3, *sv4; \
182 STRLEN stroffset; \
183 SV *self;
184
185#define EIO_NO_WRAPPERS 1
186
187#include "libeio/eio.h"
188
189static int req_invoke (eio_req *req);
190#define EIO_FINISH(req) req_invoke (req)
191static void req_destroy (eio_req *grp);
192#define EIO_DESTROY(req) req_destroy (req)
193
194#include "libeio/eio.c"
195
196#if !HAVE_POSIX_FADVISE
197# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#if !HAVE_POSIX_MADVISE
201# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
202#endif
203
204#ifndef MAP_ANONYMOUS
205# ifdef MAP_ANON
206# define MAP_ANONYMOUS MAP_ANON
43# else 207# else
44# error sendfile support requested but not available 208# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 209# endif
46#endif 210#endif
47 211
48/* number of seconds after which idle threads exit */ 212#ifndef makedev
49#define IDLE_TIMEOUT 10 213# 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 214#endif
55 215#ifndef major
56#ifndef PTHREAD_STACK_MIN 216# define major(dev) ((dev) >> 8)
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif 217#endif
218#ifndef minor
219# define minor(dev) ((dev) & 0xff)
220#endif
60 221
61#if __ia64 222/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
62# define STACKSIZE 65536 223#ifdef __sun
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 224# undef PAGESIZE
64# define STACKSIZE PTHREAD_STACK_MIN 225#endif
226
227#if PAGESIZE <= 0
228# define PAGESIZE sysconf (_SC_PAGESIZE)
229#endif
230
231#if HAVE_SYSCALL
232#include <sys/syscall.h>
65#else 233#else
66# define STACKSIZE 16384 234# 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 235#endif
79#endif
80 236
81/* buffer size for various temporary buffers */ 237/*****************************************************************************/
82#define AIO_BUFSIZE 65536
83 238
84#define dBUF \ 239#if !_POSIX_MAPPED_FILES
85 char *aio_buf; \ 240# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
86 LOCK (wrklock); \ 241# define munmap(addr,length) EIO_ENOSYS ()
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 242#endif
88 UNLOCK (wrklock); \ 243
89 if (!aio_buf) \ 244#if !_POSIX_MEMORY_PROTECTION
245# define mprotect(addr,len,prot) EIO_ENOSYS ()
246#endif
247
248#if !MREMAP_MAYMOVE
249# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
250#endif
251
252#define FOREIGN_MAGIC PERL_MAGIC_ext
253
254static int ecb_cold
255mmap_free (pTHX_ SV *sv, MAGIC *mg)
256{
257 int old_errno = errno;
258 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
259 errno = old_errno;
260
261 mg->mg_obj = 0; /* just in case */
262
263 SvREADONLY_off (sv);
264
265 if (SvPVX (sv) != mg->mg_ptr)
266 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
267
268 SvCUR_set (sv, 0);
269 SvPVX (sv) = 0;
270 SvOK_off (sv);
271
90 return -1; 272 return 0;
273}
91 274
92typedef SV SV8; /* byte-sv, used for argument-checking */ 275static MGVTBL mmap_vtbl = {
93 276 0, 0, 0, 0, mmap_free
94enum {
95 REQ_QUIT,
96 REQ_OPEN, REQ_CLOSE,
97 REQ_READ, REQ_WRITE, REQ_READAHEAD,
98 REQ_SENDFILE,
99 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100 REQ_FSYNC, REQ_FDATASYNC,
101 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102 REQ_MKNOD, REQ_READDIR,
103 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104 REQ_GROUP, REQ_NOP,
105 REQ_BUSY,
106}; 277};
107 278
108#define AIO_REQ_KLASS "IO::AIO::REQ" 279static int ecb_cold
109#define AIO_GRP_KLASS "IO::AIO::GRP" 280sysfree_free (pTHX_ SV *sv, MAGIC *mg)
110
111typedef struct aio_cb
112{ 281{
113 struct aio_cb *volatile next; 282 free (mg->mg_ptr);
283 mg->mg_obj = 0; /* just in case */
114 284
115 SV *callback, *fh; 285 SvREADONLY_off (sv);
116 SV *sv1, *sv2;
117 void *ptr1, *ptr2;
118 off_t offs;
119 size_t size;
120 ssize_t result;
121 286
122 STRLEN stroffset; 287 if (SvPVX (sv) != mg->mg_ptr)
123 int type; 288 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
124 int int1, int2;
125 int errorno;
126 mode_t mode; /* open */
127 289
128 unsigned char flags; 290 SvCUR_set (sv, 0);
129 unsigned char pri; 291 SvPVX (sv) = 0;
292 SvOK_off (sv);
130 293
131 SV *self; /* the perl counterpart of this request, if any */ 294 return 0;
132 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 295}
133} aio_cb;
134 296
135enum { 297static MGVTBL sysfree_vtbl = {
136 FLAG_CANCELLED = 0x01, /* request was cancelled */ 298 0, 0, 0, 0, sysfree_free
137 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139}; 299};
140 300
141typedef aio_cb *aio_req; 301/*****************************************************************************/
142typedef aio_cb *aio_req_ornot;
143 302
144enum { 303/* helper: set scalar to foreign ptr with custom free */
145 PRI_MIN = -4, 304ecb_noinline
146 PRI_MAX = 4, 305static void
147 306sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
148 DEFAULT_PRI = 0,
149 PRI_BIAS = -PRI_MIN,
150 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151};
152
153#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155static unsigned int max_poll_time = 0;
156static unsigned int max_poll_reqs = 0;
157
158/* calculcate time difference in ~1/AIO_TICKS of a second */
159static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160{ 307{
161 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 308 sv_force_normal (sv);
162 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
163}
164 309
165static int next_pri = DEFAULT_PRI + PRI_BIAS; 310 /* we store the length in mg_obj, as namlen is I32 :/ */
311 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
312 ->mg_obj = (SV *)length;
166 313
167static unsigned int started, idle, wanted; 314 SvUPGRADE (sv, SVt_PV); /* nop... */
168 315
169#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 316 if (SvLEN (sv))
170# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 317 Safefree (SvPVX (sv));
171#else
172# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173#endif
174 318
175#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 319 SvPVX (sv) = (char *)addr;
176#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 320 SvCUR_set (sv, length);
321 SvLEN_set (sv, 0);
322 SvPOK_only (sv);
323}
177 324
178/* worker threads management */ 325static void
179static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 326sv_clear_foreign (SV *sv)
180
181typedef struct worker {
182 /* locked by wrklock */
183 struct worker *prev, *next;
184
185 pthread_t tid;
186
187 /* locked by reslock, reqlock or wrklock */
188 aio_req req; /* currently processed request */
189 void *dbuf;
190 DIR *dirp;
191} worker;
192
193static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195static void worker_clear (worker *wrk)
196{ 327{
197 if (wrk->dirp) 328 /* todo: iterate over magic and only free ours, but of course */
329 /* the perl5porters will call that (correct) behaviour buggy */
330 sv_unmagic (sv, FOREIGN_MAGIC);
331}
332
333/*****************************************************************************/
334
335/* defines all sorts of constants to 0 unless they are already defined */
336/* also provides const_iv_ and const_niv_ macros for them */
337#include "def0.h"
338
339/*****************************************************************************/
340
341static void
342fiemap (eio_req *req)
343{
344 req->result = -1;
345
346#if HAVE_FIEMAP
347 /* assume some c99 */
348 struct fiemap *fiemap = 0;
349 size_t end_offset;
350 int count = req->int3;
351
352 req->flags |= EIO_FLAG_PTR1_FREE;
353
354 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
355 /* increase in fixed steps */
356 if (count < 0)
357 count = 8;
358
359 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360 errno = ENOMEM;
361 if (!fiemap)
362 return;
363
364 req->ptr1 = fiemap;
365
366 fiemap->fm_start = req->offs;
367 fiemap->fm_length = req->size;
368 fiemap->fm_flags = req->int2;
369 fiemap->fm_extent_count = count;
370
371 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
372 return;
373
374 if (req->int3 >= 0 /* not autosizing */
375 || !fiemap->fm_mapped_extents /* no more extents */
376 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
377 goto done;
378
379 /* else we have to loop -
380 * it would be tempting (actually I tried that first) to just query the
381 * number of extents needed, but linux often feels like not returning all
382 * extents, without telling us it left any out. this complicates
383 * this quite a bit.
384 */
385
386 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
387
388 for (;;)
198 { 389 {
199 closedir (wrk->dirp); 390 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
200 wrk->dirp = 0; 391 char scratch[3072];
201 } 392 struct fiemap *incmap = (struct fiemap *)scratch;
202 393
203 if (wrk->dbuf) 394 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 395 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 396 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 397 incmap->fm_flags = fiemap->fm_flags;
207 } 398 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 399
210static void worker_free (worker *wrk) 400 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
211{
212 wrk->next->prev = wrk->prev;
213 wrk->prev->next = wrk->next;
214
215 free (wrk);
216}
217
218static volatile unsigned int nreqs, nready, npending;
219static volatile unsigned int max_idle = 4;
220static volatile unsigned int max_outstanding = 0xffffffff;
221static int respipe [2];
222
223static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227#if WORDACCESS_UNSAFE
228
229static unsigned int get_nready ()
230{
231 unsigned int retval;
232
233 LOCK (reqlock);
234 retval = nready;
235 UNLOCK (reqlock);
236
237 return retval;
238}
239
240static unsigned int get_npending ()
241{
242 unsigned int retval;
243
244 LOCK (reslock);
245 retval = npending;
246 UNLOCK (reslock);
247
248 return retval;
249}
250
251static unsigned int get_nthreads ()
252{
253 unsigned int retval;
254
255 LOCK (wrklock);
256 retval = started;
257 UNLOCK (wrklock);
258
259 return retval;
260}
261
262#else
263
264# define get_nready() nready
265# define get_npending() npending
266# define get_nthreads() started
267
268#endif
269
270/*
271 * a somewhat faster data structure might be nice, but
272 * with 8 priorities this actually needs <20 insns
273 * per shift, the most expensive operation.
274 */
275typedef struct {
276 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277 int size;
278} reqq;
279
280static reqq req_queue;
281static reqq res_queue;
282
283int reqq_push (reqq *q, aio_req req)
284{
285 int pri = req->pri;
286 req->next = 0;
287
288 if (q->qe[pri])
289 {
290 q->qe[pri]->next = req;
291 q->qe[pri] = req;
292 }
293 else
294 q->qe[pri] = q->qs[pri] = req;
295
296 return q->size++;
297}
298
299aio_req reqq_shift (reqq *q)
300{
301 int pri;
302
303 if (!q->size)
304 return 0; 401 return;
305 402
306 --q->size; 403 if (!incmap->fm_mapped_extents)
404 goto done;
307 405
308 for (pri = NUM_PRI; pri--; ) 406 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
309 { 407 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
310 aio_req req = q->qs[pri]; 408 errno = ENOMEM;
311
312 if (req) 409 if (!fiemap)
410 return;
411
412 req->ptr1 = fiemap;
413
414 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 415 {
314 if (!(q->qs[pri] = req->next)) 416 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 417
317 return req; 418 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
419
420 if (e->fe_logical >= end_offset)
421 goto done;
422
423 if (e->fe_flags & FIEMAP_EXTENT_LAST)
424 goto done;
425
318 } 426 }
319 } 427 }
320 428
321 abort (); 429done:
322} 430 req->result = 0;
323 431
324static int poll_cb (); 432#else
325static void req_invoke (aio_req req); 433 errno = ENOSYS;
434#endif
435}
436
437/*****************************************************************************/
438
439static int close_fd; /* dummy fd to close fds via dup2 */
440
441#if HAVE_STATX
442static struct statx stx;
443#define statx_offsetof(member) offsetof (struct statx, member)
444#define eio__statx statx
445#else
446#define statx_offsetof(member) 0
447#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
448#endif
449
450enum {
451 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
452};
453
454typedef eio_req *aio_req;
455typedef eio_req *aio_req_ornot;
456typedef eio_wd aio_wd;
457
458static SV *on_next_submit;
459static int next_pri = EIO_PRI_DEFAULT;
460static int max_outstanding;
461
462static s_epipe respipe;
463
326static void req_free (aio_req req); 464static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 465static void req_cancel (aio_req req);
328 466
467static void
468want_poll (void)
469{
470 /* write a dummy byte to the pipe so fh becomes ready */
471 s_epipe_signal (&respipe);
472}
473
474static void
475done_poll (void)
476{
477 /* read any signals sent by the worker threads */
478 s_epipe_drain (&respipe);
479}
480
329/* must be called at most once */ 481/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 482ecb_noinline
483static SV *
484req_sv (aio_req req, HV *stash)
331{ 485{
332 if (!req->self) 486 if (!req->self)
333 { 487 {
334 req->self = (SV *)newHV (); 488 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 489 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 490 }
337 491
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 492 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 493}
340 494
341static aio_req SvAIO_REQ (SV *sv) 495static SV *
496newSVaio_wd (aio_wd wd)
497{
498 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
499}
500
501ecb_noinline
502static aio_req
503SvAIO_REQ (SV *sv)
342{ 504{
343 MAGIC *mg; 505 MAGIC *mg;
344 506
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 507 if (!SvROK (sv)
508 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
509 || (SvSTASH (SvRV (sv)) != aio_grp_stash
510 && SvSTASH (SvRV (sv)) != aio_req_stash
511 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 512 croak ("object of class IO::AIO::REQ expected");
347 513
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 514 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 515
350 return mg ? (aio_req)mg->mg_ptr : 0; 516 return mg ? (aio_req)mg->mg_ptr : 0;
351} 517}
352 518
519static aio_wd
520SvAIO_WD (SV *sv)
521{
522 if (!SvROK (sv)
523 || SvTYPE (SvRV (sv)) != SVt_PVMG
524 || SvSTASH (SvRV (sv)) != aio_wd_stash)
525 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
526
527 return (aio_wd)(long)SvIVX (SvRV (sv));
528}
529
530static SV *
531newmortalFH (int fd, int flags)
532{
533 if (fd < 0)
534 return &PL_sv_undef;
535
536 GV *gv = (GV *)sv_newmortal ();
537 char sym[64];
538 int symlen;
539
540 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
541 gv_init (gv, aio_stash, sym, symlen, 0);
542
543 symlen = snprintf (
544 sym,
545 sizeof (sym),
546 "%s&=%d",
547 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
548 fd
549 );
550
551 return do_open (gv, sym, symlen, 0, 0, 0, 0)
552 ? (SV *)gv : &PL_sv_undef;
553}
554
555static void
353static void aio_grp_feed (aio_req grp) 556aio_grp_feed (aio_req grp)
354{ 557{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 558 if (grp->sv2 && SvOK (grp->sv2))
356 { 559 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 560 dSP;
362 561
363 ENTER; 562 ENTER;
364 SAVETMPS; 563 SAVETMPS;
365 PUSHMARK (SP); 564 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 565 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 566 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 567 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 568 SPAGAIN;
370 FREETMPS; 569 FREETMPS;
371 LEAVE; 570 LEAVE;
372 }
373
374 /* stop if no progress has been made */
375 if (old_len == grp->size)
376 {
377 SvREFCNT_dec (grp->sv2);
378 grp->sv2 = 0;
379 break;
380 }
381 } 571 }
382} 572}
383 573
384static void aio_grp_dec (aio_req grp) 574ecb_noinline
575static void
576req_submit (eio_req *req)
385{ 577{
386 --grp->size; 578 eio_submit (req);
387 579
388 /* call feeder, if applicable */ 580 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 581 {
394 req_invoke (grp); 582 dSP;
395 req_free (grp); 583 SV *cb = sv_2mortal (on_next_submit);
584
585 on_next_submit = 0;
586
587 PUSHMARK (SP);
588 PUTBACK;
589 call_sv (cb, G_DISCARD | G_EVAL);
396 } 590 }
397} 591}
398 592
593static int
399static void req_invoke (aio_req req) 594req_invoke (eio_req *req)
400{ 595{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 596 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 597 SvREADONLY_off (req->sv2);
405 598
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 599 if (!EIO_CANCELLED (req) && req->callback)
407 { 600 {
601 dSP;
602 static SV *sv_result_cache; /* caches the result integer SV */
603 SV *sv_result;
604
408 ENTER; 605 ENTER;
409 SAVETMPS; 606 SAVETMPS;
410 PUSHMARK (SP); 607 PUSHMARK (SP);
411 EXTEND (SP, 1); 608 EXTEND (SP, 1);
412 609
610 /* do not recreate the result IV from scratch each time */
611 if (expect_true (sv_result_cache))
612 {
613 sv_result = sv_result_cache; sv_result_cache = 0;
614 SvIV_set (sv_result, req->result);
615 SvIOK_only (sv_result);
616 }
617 else
618 {
619 sv_result = newSViv (req->result);
620 SvREADONLY_on (sv_result);
621 }
622
413 switch (req->type) 623 switch (req->type)
414 { 624 {
625 case EIO_WD_OPEN:
626 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
627 break;
628
415 case REQ_READDIR: 629 case EIO_READDIR:
416 { 630 {
417 SV *rv = &PL_sv_undef; 631 SV *rv = &PL_sv_undef;
418 632
419 if (req->result >= 0) 633 if (req->result >= 0)
420 { 634 {
421 int i; 635 int i;
422 char *buf = req->ptr2; 636 char *names = (char *)req->ptr2;
637 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 638 AV *av = newAV ();
424 639
425 av_extend (av, req->result - 1); 640 av_extend (av, req->result - 1);
426 641
427 for (i = 0; i < req->result; ++i) 642 for (i = 0; i < req->result; ++i)
428 { 643 {
429 SV *sv = newSVpv (buf, 0); 644 if (req->int1 & EIO_READDIR_DENTS)
645 {
646 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 647
648 if (req->int1 & EIO_READDIR_CUSTOM2)
649 {
650 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
651 AV *avent = newAV ();
652
653 av_extend (avent, 2);
654
655 if (!sv_type [ent->type])
656 {
657 sv_type [ent->type] = newSViv (ent->type);
658 SvREADONLY_on (sv_type [ent->type]);
659 }
660
661 av_store (avent, 0, namesv);
662 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
663 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
664
665 av_store (av, i, newRV_noinc ((SV *)avent));
666 }
667 else
431 av_store (av, i, sv); 668 av_store (av, i, namesv);
669
670 ++ent;
671 }
672 else
673 {
674 SV *name = newSVpv (names, 0);
675 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 676 names += SvCUR (name) + 1;
677 }
433 } 678 }
434 679
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 680 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 681 }
437 682
438 PUSHs (rv); 683 PUSHs (rv);
684
685 if (req->int1 & EIO_READDIR_CUSTOM1)
686 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 687 }
440 break; 688 break;
441 689
442 case REQ_OPEN: 690 case EIO_OPEN:
691 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
692 break;
693
694 case EIO_STATVFS:
695 case EIO_FSTATVFS:
443 { 696 {
444 /* convert fd to fh */ 697 SV *rv = &PL_sv_undef;
445 SV *fh; 698
699#ifndef _WIN32
700 if (req->result >= 0)
701 {
702 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
703 HV *hv = newHV ();
704 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
705 * chooses to make it a struct.
706 */
707 unsigned long fsid = 0;
708 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
446 709
447 PUSHs (sv_2mortal (newSViv (req->result))); 710 rv = sv_2mortal (newRV_noinc ((SV *)hv));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451 711
452 fh = SvREFCNT_inc (POPs); 712 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
713 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
714 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
715 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
716 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
717 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
718 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
719 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
720 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
721 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
722 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
723 }
724#endif
453 725
454 PUSHMARK (SP); 726 PUSHs (rv);
455 XPUSHs (sv_2mortal (fh));
456 } 727 }
728
457 break; 729 break;
458 730
459 case REQ_GROUP: 731 case EIO_GROUP:
460 req->int1 = 2; /* mark group as finished */ 732 req->int1 = 2; /* mark group as finished */
461 733
462 if (req->sv1) 734 if (req->sv1)
463 { 735 {
464 int i; 736 int i;
… …
468 for (i = 0; i <= AvFILL (av); ++i) 740 for (i = 0; i <= AvFILL (av); ++i)
469 PUSHs (*av_fetch (av, i, 0)); 741 PUSHs (*av_fetch (av, i, 0));
470 } 742 }
471 break; 743 break;
472 744
473 case REQ_NOP: 745 case EIO_NOP:
474 case REQ_BUSY: 746 case EIO_BUSY:
475 break; 747 break;
476 748
477 case REQ_READLINK: 749 case EIO_READLINK:
750 case EIO_REALPATH:
478 if (req->result > 0) 751 if (req->result > 0)
752 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
753 break;
754
755 case EIO_STAT:
756 case EIO_LSTAT:
757 case EIO_FSTAT:
758 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
759
760 if (!(PL_laststatval = req->result))
761 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
762 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
763
764 PUSHs (sv_result);
765 break;
766
767 case EIO_SEEK:
768 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
769 break;
770
771 case EIO_READ:
772 {
773 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
774 *SvEND (req->sv2) = 0;
775 SvPOK_only (req->sv2);
776 SvSETMAGIC (req->sv2);
777 PUSHs (sv_result);
778 }
779 break;
780
781 case EIO_SLURP:
782 {
783 if (req->result >= 0)
784 {
785 /* if length was originally not known, we steal the malloc'ed memory */
786 if (req->flags & EIO_FLAG_PTR2_FREE)
787 {
788 req->flags &= ~EIO_FLAG_PTR2_FREE;
789 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
790 }
791 else
792 {
793 SvCUR_set (req->sv2, req->result);
794 *SvEND (req->sv2) = 0;
795 SvPOK_only (req->sv2);
796 }
797
798 SvSETMAGIC (req->sv2);
799 }
800
801 PUSHs (sv_result);
802 }
803 break;
804
805 case EIO_CUSTOM:
806 if (req->feed == fiemap)
479 { 807 {
480 SvCUR_set (req->sv1, req->result); 808#if HAVE_FIEMAP
481 *SvEND (req->sv1) = 0;
482 PUSHs (req->sv1); 809 if (!req->result)
810 {
811 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
812
813 if (fiemap->fm_extent_count)
814 {
815 AV *av = newAV ();
816 int i;
817
818 while (fiemap->fm_mapped_extents)
819 {
820 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
821 AV *ext_av = newAV ();
822
823 av_store (ext_av, 3, newSVuv (extent->fe_flags));
824 av_store (ext_av, 2, newSVval64 (extent->fe_length));
825 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
826 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
827
828 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
829 }
830
831 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
832 }
833 else
834 {
835 SvIV_set (sv_result, fiemap->fm_mapped_extents);
836 PUSHs (sv_result);
837 }
838 }
839#endif
483 } 840 }
841 else
842 PUSHs (sv_result);
484 break; 843 break;
485 844
486 case REQ_STAT: 845#if 0
487 case REQ_LSTAT: 846 case EIO_CLOSE:
488 case REQ_FSTAT: 847 PerlIOUnix_refcnt_dec (req->int1);
489 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
490 PL_laststatval = req->result;
491 PL_statcache = *(Stat_t *)(req->ptr2);
492 PUSHs (sv_2mortal (newSViv (req->result)));
493 break; 848 break;
849#endif
494 850
495 case REQ_READ: 851 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
496 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 852 if (req->result > 0)
497 *SvEND (req->sv1) = 0; 853 SvIV_set (sv_result, 0);
498 PUSHs (sv_2mortal (newSViv (req->result))); 854 /* FALLTHROUGH */
499 break;
500 855
501 default: 856 default:
502 PUSHs (sv_2mortal (newSViv (req->result))); 857 PUSHs (sv_result);
503 break; 858 break;
504 } 859 }
505 860
506 errno = req->errorno; 861 errno = req->errorno;
507 862
508 PUTBACK; 863 PUTBACK;
509 call_sv (req->callback, G_VOID | G_EVAL); 864 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510 SPAGAIN; 865 SPAGAIN;
866
867 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
868 SvREFCNT_dec (sv_result);
869 else
870 sv_result_cache = sv_result;
511 871
512 FREETMPS; 872 FREETMPS;
513 LEAVE; 873 LEAVE;
874
875 PUTBACK;
514 } 876 }
515 877
516 if (req->grp) 878 return !!SvTRUE (ERRSV);
517 {
518 aio_req grp = req->grp;
519
520 /* unlink request */
521 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524 if (grp->grp_first == req)
525 grp->grp_first = req->grp_next;
526
527 aio_grp_dec (grp);
528 }
529
530 if (SvTRUE (ERRSV))
531 {
532 req_free (req);
533 croak (0);
534 }
535} 879}
536 880
537static void req_free (aio_req req) 881static void
882req_destroy (aio_req req)
538{ 883{
539 if (req->self) 884 if (req->self)
540 { 885 {
541 sv_unmagic (req->self, PERL_MAGIC_ext); 886 sv_unmagic (req->self, PERL_MAGIC_ext);
542 SvREFCNT_dec (req->self); 887 SvREFCNT_dec (req->self);
543 } 888 }
544 889
545 SvREFCNT_dec (req->fh);
546 SvREFCNT_dec (req->sv1); 890 SvREFCNT_dec (req->sv1);
547 SvREFCNT_dec (req->sv2); 891 SvREFCNT_dec (req->sv2);
892 SvREFCNT_dec (req->sv3);
893 SvREFCNT_dec (req->sv4);
548 SvREFCNT_dec (req->callback); 894 SvREFCNT_dec (req->callback);
549 895
550 if (req->flags & FLAG_PTR2_FREE)
551 free (req->ptr2);
552
553 Safefree (req); 896 free (req);
554} 897}
555 898
899static void
556static void req_cancel_subs (aio_req grp) 900req_cancel_subs (aio_req grp)
557{ 901{
558 aio_req sub;
559
560 if (grp->type != REQ_GROUP) 902 if (grp->type != EIO_GROUP)
561 return; 903 return;
562 904
563 SvREFCNT_dec (grp->sv2); 905 SvREFCNT_dec (grp->sv2);
564 grp->sv2 = 0; 906 grp->sv2 = 0;
565 907
566 for (sub = grp->grp_first; sub; sub = sub->grp_next) 908 eio_grp_cancel (grp);
567 req_cancel (sub);
568} 909}
569 910
570static void req_cancel (aio_req req) 911ecb_cold
912static void
913create_respipe (void)
571{ 914{
572 req->flags |= FLAG_CANCELLED; 915 if (s_epipe_renew (&respipe))
573 916 croak ("IO::AIO: unable to initialize result pipe");
574 req_cancel_subs (req);
575} 917}
576 918
577static void *aio_proc(void *arg); 919static void
578 920poll_wait (void)
579static void start_thread (void)
580{ 921{
581 sigset_t fullsigset, oldsigset;
582 pthread_attr_t attr;
583
584 worker *wrk = calloc (1, sizeof (worker));
585
586 if (!wrk)
587 croak ("unable to allocate worker thread data");
588
589 pthread_attr_init (&attr);
590 pthread_attr_setstacksize (&attr, STACKSIZE);
591 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592#ifdef PTHREAD_SCOPE_PROCESS
593 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594#endif
595
596 sigfillset (&fullsigset);
597
598 LOCK (wrklock);
599 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602 {
603 wrk->prev = &wrk_first;
604 wrk->next = wrk_first.next;
605 wrk_first.next->prev = wrk;
606 wrk_first.next = wrk;
607 ++started;
608 }
609 else
610 free (wrk);
611
612 sigprocmask (SIG_SETMASK, &oldsigset, 0);
613 UNLOCK (wrklock);
614}
615
616static void maybe_start_thread ()
617{
618 if (get_nthreads () >= wanted)
619 return;
620
621 /* todo: maybe use idle here, but might be less exact */
622 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623 return;
624
625 start_thread ();
626}
627
628static void req_send (aio_req req)
629{
630 ++nreqs;
631
632 LOCK (reqlock);
633 ++nready;
634 reqq_push (&req_queue, req);
635 pthread_cond_signal (&reqwait);
636 UNLOCK (reqlock);
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 pthread_cond_signal (&reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 922 while (eio_nreqs ())
687 { 923 {
688 int size; 924 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 925
926 X_LOCK (EIO_POOL->reslock);
690 size = res_queue.size; 927 size = EIO_POOL->res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 928 X_UNLOCK (EIO_POOL->reslock);
692 929
693 if (size) 930 if (size)
694 return; 931 return;
695 932
696 maybe_start_thread (); 933 etp_maybe_start_thread (EIO_POOL);
697 934
698 FD_ZERO(&rfd); 935 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 936 }
703} 937}
704 938
705static int poll_cb () 939static int
940poll_cb (void)
706{ 941{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 for (;;) 942 for (;;)
718 { 943 {
719 for (;;) 944 int res = eio_poll ();
945
946 if (res > 0)
947 croak (0);
948
949 if (!max_outstanding || max_outstanding > eio_nreqs ())
950 return res;
951
952 poll_wait ();
953 }
954}
955
956ecb_cold
957static void
958reinit (void)
959{
960 create_respipe ();
961
962 if (eio_init (want_poll, done_poll) < 0)
963 croak ("IO::AIO: unable to initialise eio library");
964}
965
966/*****************************************************************************/
967
968static SV *
969get_cb (SV *cb_sv)
970{
971 SvGETMAGIC (cb_sv);
972 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
973}
974
975ecb_noinline
976static aio_req ecb_noinline
977dreq (SV *callback)
978{
979 SV *cb_cv;
980 aio_req req;
981 int req_pri = next_pri;
982 next_pri = EIO_PRI_DEFAULT;
983
984 cb_cv = get_cb (callback);
985
986 req = calloc (sizeof (*req), 1);
987 if (!req)
988 croak ("out of memory during eio_req allocation");
989
990 req->callback = SvREFCNT_inc (cb_cv);
991 req->pri = req_pri;
992
993 return req;
994}
995
996#define dREQ \
997 aio_req req = dreq (callback); \
998
999#define REQ_SEND \
1000 PUTBACK; \
1001 req_submit (req); \
1002 SPAGAIN; \
1003 \
1004 if (GIMME_V != G_VOID) \
1005 XPUSHs (req_sv (req, aio_req_stash));
1006
1007/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
1008ecb_inline
1009void
1010req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
1011{
1012 if (expect_false (SvROK (path)))
1013 {
1014 SV *rv = SvRV (path);
1015 SV *wdob;
1016
1017 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
720 { 1018 {
721 maybe_start_thread (); 1019 path = AvARRAY (rv)[1];
1020 wdob = AvARRAY (rv)[0];
722 1021
723 LOCK (reslock); 1022 if (SvOK (wdob))
724 req = reqq_shift (&res_queue);
725
726 if (req)
727 { 1023 {
728 --npending; 1024 *wd = SvAIO_WD (wdob);
729 1025 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
730 if (!res_queue.size)
731 {
732 /* read any signals sent by the worker threads */
733 char buf [32];
734 while (read (respipe [0], buf, 32) == 32)
735 ;
736 }
737 }
738
739 UNLOCK (reslock);
740
741 if (!req)
742 break;
743
744 --nreqs;
745
746 if (req->type == REQ_GROUP && req->size)
747 {
748 req->int1 = 1; /* mark request as delayed */
749 continue;
750 } 1026 }
751 else 1027 else
752 { 1028 *wd = EIO_INVALID_WD;
753 req_invoke (req);
754
755 count++;
756 }
757
758 req_free (req);
759
760 if (maxreqs && !--maxreqs)
761 break;
762
763 if (max_poll_time)
764 {
765 gettimeofday (&tv_now, 0);
766
767 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768 break;
769 }
770 } 1029 }
1030 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1031 {
1032 *wd = (aio_wd)(long)SvIVX (rv);
1033 *wdsv = SvREFCNT_inc_NN (rv);
1034 *ptr = ".";
1035 return; /* path set to "." */
1036 }
1037 else
1038 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1039 }
771 1040
772 if (nreqs <= max_outstanding) 1041 *pathsv = newSVsv (path);
1042 *ptr = SvPVbyte_nolen (*pathsv);
1043}
1044
1045ecb_noinline
1046static void
1047req_set_path1 (aio_req req, SV *path)
1048{
1049 req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1050}
1051
1052ecb_noinline
1053static void
1054req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1055{
1056 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1057
1058 switch (SvTYPE (rv))
1059 {
1060 case SVt_PVIO:
1061 case SVt_PVLV:
1062 case SVt_PVGV:
1063 req->type = type_fh;
1064 req->sv1 = newSVsv (fh_or_path);
1065 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773 break; 1066 break;
774 1067
775 poll_wait (); 1068 default:
776 1069 req->type = type_path;
777 ++maxreqs; 1070 req_set_path1 (req, fh_or_path);
1071 break;
778 } 1072 }
779
780 return count;
781}
782
783static void create_pipe ()
784{
785 if (pipe (respipe))
786 croak ("unable to initialize result pipe");
787
788 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789 croak ("cannot set result pipe to nonblocking mode");
790
791 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792 croak ("cannot set result pipe to nonblocking mode");
793} 1073}
794 1074
795/*****************************************************************************/ 1075/*****************************************************************************/
796/* work around various missing functions */
797 1076
798#if !HAVE_PREADWRITE 1077static void
799# define pread aio_pread 1078ts_set (struct timespec *ts, NV value)
800# define pwrite aio_pwrite
801
802/*
803 * make our pread/pwrite safe against themselves, but not against
804 * normal read/write by using a mutex. slows down execution a lot,
805 * but that's your problem, not mine.
806 */
807static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810{ 1079{
811 ssize_t res; 1080 ts->tv_sec = value;
812 off_t ooffset; 1081 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
813
814 LOCK (preadwritelock);
815 ooffset = lseek (fd, 0, SEEK_CUR);
816 lseek (fd, offset, SEEK_SET);
817 res = read (fd, buf, count);
818 lseek (fd, ooffset, SEEK_SET);
819 UNLOCK (preadwritelock);
820
821 return res;
822} 1082}
823 1083
824static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1084static NV
1085ts_get (const struct timespec *ts)
825{ 1086{
826 ssize_t res; 1087 return ts->tv_sec + ts->tv_nsec * 1e-9;
827 off_t ooffset;
828
829 LOCK (preadwritelock);
830 ooffset = lseek (fd, 0, SEEK_CUR);
831 lseek (fd, offset, SEEK_SET);
832 res = write (fd, buf, count);
833 lseek (fd, offset, SEEK_SET);
834 UNLOCK (preadwritelock);
835
836 return res;
837} 1088}
838#endif
839 1089
840#if !HAVE_FDATASYNC 1090/*****************************************************************************/
841# define fdatasync fsync
842#endif
843 1091
844#if !HAVE_READAHEAD 1092XS(boot_IO__AIO) ecb_cold;
845# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846 1093
847static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1094MODULE = IO::AIO PACKAGE = IO::AIO
848{
849 dBUF;
850 1095
851 while (count > 0) 1096PROTOTYPES: ENABLE
852 {
853 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854 1097
855 pread (fd, aio_buf, len, offset); 1098BOOT:
856 offset += len;
857 count -= len;
858 }
859
860 errno = 0;
861}
862
863#endif
864
865#if !HAVE_READDIR_R
866# define readdir_r aio_readdir_r
867
868static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871{ 1099{
872 struct dirent *e; 1100 static const struct {
873 int errorno; 1101 const char *name;
1102 IV iv;
1103 } *civ, const_iv[] = {
1104# define const_niv(name, value) { # name, (IV) value },
1105# define const_iv(name) { # name, (IV) name },
1106# define const_eio(name) { # name, (IV) EIO_ ## name },
874 1107
875 LOCK (readdirlock); 1108 /* you have to re-run ./gendef0 after adding/removing any constants here */
1109 /* the first block can be undef if missing */
1110 const_iv (ENOSYS)
1111 const_iv (EXDEV)
1112 const_iv (EBADR)
876 1113
877 e = readdir (dirp); 1114 /* for lseek */
878 errorno = errno; 1115 const_iv (SEEK_DATA)
1116 const_iv (SEEK_HOLE)
879 1117
880 if (e) 1118 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
881 { 1119 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
882 *res = ent; 1120 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
883 strcpy (ent->d_name, e->d_name); 1121 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
884 } 1122 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
885 else 1123 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
886 *res = 0;
887 1124
888 UNLOCK (readdirlock); 1125 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1126 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1127 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1128 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1129 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
889 1130
890 errno = errorno; 1131 /* the second block will be 0 when missing */
891 return e ? 0 : -1; 1132 const_iv (O_ACCMODE)
892}
893#endif
894 1133
895/* sendfile always needs emulation */ 1134 const_iv (O_RDONLY)
896static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1135 const_iv (O_WRONLY)
897{ 1136 const_iv (O_RDWR)
898 ssize_t res; 1137 const_iv (O_CREAT)
1138 const_iv (O_TRUNC)
1139 const_iv (O_EXCL)
1140 const_iv (O_APPEND)
899 1141
900 if (!count) 1142 const_iv (O_ASYNC)
901 return 0; 1143 const_iv (O_DIRECT)
1144 const_iv (O_NOATIME)
902 1145
903#if HAVE_SENDFILE 1146 const_iv (O_CLOEXEC)
904# if __linux 1147 const_iv (O_NOCTTY)
905 res = sendfile (ofd, ifd, &offset, count); 1148 const_iv (O_NOFOLLOW)
1149 const_iv (O_NONBLOCK)
1150 const_iv (O_EXEC)
1151 const_iv (O_SEARCH)
1152 const_iv (O_DIRECTORY)
1153 const_iv (O_DSYNC)
1154 const_iv (O_RSYNC)
1155 const_iv (O_SYNC)
1156 const_iv (O_PATH)
1157 const_iv (O_TMPFILE)
1158 const_iv (O_TTY_INIT)
906 1159
907# elif __freebsd 1160 const_iv (S_IFIFO)
908 /* 1161 const_iv (S_IFCHR)
909 * Of course, the freebsd sendfile is a dire hack with no thoughts 1162 const_iv (S_IFBLK)
910 * wasted on making it similar to other I/O functions. 1163 const_iv (S_IFLNK)
911 */ 1164 const_iv (S_IFREG)
1165 const_iv (S_IFDIR)
1166 const_iv (S_IFWHT)
1167 const_iv (S_IFSOCK)
1168 const_iv (S_IFMT)
1169
1170 const_iv (ST_RDONLY)
1171 const_iv (ST_NOSUID)
1172 const_iv (ST_NODEV)
1173 const_iv (ST_NOEXEC)
1174 const_iv (ST_SYNCHRONOUS)
1175 const_iv (ST_MANDLOCK)
1176 const_iv (ST_WRITE)
1177 const_iv (ST_APPEND)
1178 const_iv (ST_IMMUTABLE)
1179 const_iv (ST_NOATIME)
1180 const_iv (ST_NODIRATIME)
1181 const_iv (ST_RELATIME)
1182
1183 const_iv (PROT_NONE)
1184 const_iv (PROT_EXEC)
1185 const_iv (PROT_READ)
1186 const_iv (PROT_WRITE)
1187
1188 const_iv (MAP_PRIVATE)
1189 const_iv (MAP_SHARED)
1190 const_iv (MAP_FIXED)
1191 const_iv (MAP_ANONYMOUS)
1192
1193 /* linuxish */
1194 const_iv (MAP_LOCKED)
1195 const_iv (MAP_NORESERVE)
1196 const_iv (MAP_POPULATE)
1197 const_iv (MAP_NONBLOCK)
1198 const_iv (MAP_GROWSDOWN)
1199 const_iv (MAP_32BIT)
1200 const_iv (MAP_HUGETLB)
1201 const_iv (MAP_STACK)
1202
1203 const_iv (MREMAP_MAYMOVE)
1204 const_iv (MREMAP_FIXED)
1205
1206 const_iv (MSG_CMSG_CLOEXEC)
1207 const_iv (SOCK_CLOEXEC)
1208
1209 const_iv (F_DUPFD_CLOEXEC)
1210
1211 const_iv (F_ADD_SEALS)
1212 const_iv (F_GET_SEALS)
1213 const_iv (F_SEAL_SEAL)
1214 const_iv (F_SEAL_SHRINK)
1215 const_iv (F_SEAL_GROW)
1216 const_iv (F_SEAL_WRITE)
1217
1218 const_iv (F_OFD_GETLK)
1219 const_iv (F_OFD_SETLK)
1220 const_iv (F_OFD_GETLKW)
1221
1222 const_iv (FIFREEZE)
1223 const_iv (FITHAW)
1224 const_iv (FITRIM)
1225 const_iv (FICLONE)
1226 const_iv (FICLONERANGE)
1227 const_iv (FIDEDUPERANGE)
1228
1229 const_iv (FS_IOC_GETFLAGS)
1230 const_iv (FS_IOC_SETFLAGS)
1231 const_iv (FS_IOC_GETVERSION)
1232 const_iv (FS_IOC_SETVERSION)
1233 const_iv (FS_IOC_FIEMAP)
1234 const_iv (FS_IOC_FSGETXATTR)
1235 const_iv (FS_IOC_FSSETXATTR)
1236 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1237 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1238 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1239
1240 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1241
1242 const_iv (FS_SECRM_FL)
1243 const_iv (FS_UNRM_FL)
1244 const_iv (FS_COMPR_FL)
1245 const_iv (FS_SYNC_FL)
1246 const_iv (FS_IMMUTABLE_FL)
1247 const_iv (FS_APPEND_FL)
1248 const_iv (FS_NODUMP_FL)
1249 const_iv (FS_NOATIME_FL)
1250 const_iv (FS_DIRTY_FL)
1251 const_iv (FS_COMPRBLK_FL)
1252 const_iv (FS_NOCOMP_FL)
1253 const_iv (FS_ENCRYPT_FL)
1254 const_iv (FS_BTREE_FL)
1255 const_iv (FS_INDEX_FL)
1256 const_iv (FS_JOURNAL_DATA_FL)
1257 const_iv (FS_NOTAIL_FL)
1258 const_iv (FS_DIRSYNC_FL)
1259 const_iv (FS_TOPDIR_FL)
1260 const_iv (FS_FL_USER_MODIFIABLE)
1261
1262 const_iv (FS_XFLAG_REALTIME)
1263 const_iv (FS_XFLAG_PREALLOC)
1264 const_iv (FS_XFLAG_IMMUTABLE)
1265 const_iv (FS_XFLAG_APPEND)
1266 const_iv (FS_XFLAG_SYNC)
1267 const_iv (FS_XFLAG_NOATIME)
1268 const_iv (FS_XFLAG_NODUMP)
1269 const_iv (FS_XFLAG_RTINHERIT)
1270 const_iv (FS_XFLAG_PROJINHERIT)
1271 const_iv (FS_XFLAG_NOSYMLINKS)
1272 const_iv (FS_XFLAG_EXTSIZE)
1273 const_iv (FS_XFLAG_EXTSZINHERIT)
1274 const_iv (FS_XFLAG_NODEFRAG)
1275 const_iv (FS_XFLAG_FILESTREAM)
1276 const_iv (FS_XFLAG_DAX)
1277 const_iv (FS_XFLAG_HASATTR)
1278
1279 const_iv (FIEMAP_FLAG_SYNC)
1280 const_iv (FIEMAP_FLAG_XATTR)
1281 const_iv (FIEMAP_FLAGS_COMPAT)
1282 const_iv (FIEMAP_EXTENT_LAST)
1283 const_iv (FIEMAP_EXTENT_UNKNOWN)
1284 const_iv (FIEMAP_EXTENT_DELALLOC)
1285 const_iv (FIEMAP_EXTENT_ENCODED)
1286 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1287 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1288 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1289 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1290 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1291 const_iv (FIEMAP_EXTENT_MERGED)
1292 const_iv (FIEMAP_EXTENT_SHARED)
1293
1294 const_iv (SPLICE_F_MOVE)
1295 const_iv (SPLICE_F_NONBLOCK)
1296 const_iv (SPLICE_F_MORE)
1297 const_iv (SPLICE_F_GIFT)
1298
1299 const_iv (EFD_CLOEXEC)
1300 const_iv (EFD_NONBLOCK)
1301 const_iv (EFD_SEMAPHORE)
1302
1303 const_iv (MFD_CLOEXEC)
1304 const_iv (MFD_ALLOW_SEALING)
1305 const_iv (MFD_HUGETLB)
1306
1307 const_iv (CLOCK_REALTIME)
1308 const_iv (CLOCK_MONOTONIC)
1309 const_iv (CLOCK_BOOTTIME)
1310 const_iv (CLOCK_REALTIME_ALARM)
1311 const_iv (CLOCK_BOOTTIME_ALARM)
1312
1313 const_iv (TFD_NONBLOCK)
1314 const_iv (TFD_CLOEXEC)
1315
1316 const_iv (TFD_TIMER_ABSTIME)
1317 const_iv (TFD_TIMER_CANCEL_ON_SET)
1318
1319 const_iv (STATX_TYPE)
1320 const_iv (STATX_MODE)
1321 const_iv (STATX_NLINK)
1322 const_iv (STATX_UID)
1323 const_iv (STATX_GID)
1324 const_iv (STATX_ATIME)
1325 const_iv (STATX_MTIME)
1326 const_iv (STATX_CTIME)
1327 const_iv (STATX_INO)
1328 const_iv (STATX_SIZE)
1329 const_iv (STATX_BLOCKS)
1330 const_iv (STATX_BASIC_STATS)
1331 const_iv (STATX_ALL)
1332 const_iv (STATX_BTIME)
1333 const_iv (STATX_ATTR_COMPRESSED)
1334 const_iv (STATX_ATTR_IMMUTABLE)
1335 const_iv (STATX_ATTR_APPEND)
1336 const_iv (STATX_ATTR_NODUMP)
1337 const_iv (STATX_ATTR_ENCRYPTED)
1338 const_iv (STATX_ATTR_AUTOMOUNT)
1339
1340 const_iv (AT_FDCWD)
1341 const_iv (AT_SYMLINK_NOFOLLOW)
1342 const_iv (AT_EACCESS)
1343 const_iv (AT_REMOVEDIR)
1344 const_iv (AT_SYMLINK_FOLLOW)
1345 const_iv (AT_NO_AUTOMOUNT)
1346 const_iv (AT_EMPTY_PATH)
1347 const_iv (AT_STATX_SYNC_TYPE)
1348 const_iv (AT_STATX_AS_STAT)
1349 const_iv (AT_STATX_FORCE_SYNC)
1350 const_iv (AT_STATX_DONT_SYNC)
1351 const_iv (AT_RECURSIVE)
1352
1353 const_iv (OPEN_TREE_CLONE)
1354
1355 const_iv (MOVE_MOUNT_F_SYMLINKS)
1356 const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
1357 const_iv (MOVE_MOUNT_F_EMPTY_PATH)
1358 const_iv (MOVE_MOUNT_T_SYMLINKS)
1359 const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
1360 const_iv (MOVE_MOUNT_T_EMPTY_PATH)
1361
1362 /* these are libeio constants, and are independent of gendef0 */
1363 const_eio (SEEK_SET)
1364 const_eio (SEEK_CUR)
1365 const_eio (SEEK_END)
1366
1367 const_eio (MCL_FUTURE)
1368 const_eio (MCL_CURRENT)
1369 const_eio (MCL_ONFAULT)
1370
1371 const_eio (MS_ASYNC)
1372 const_eio (MS_INVALIDATE)
1373 const_eio (MS_SYNC)
1374
1375 const_eio (MT_MODIFY)
1376
1377 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1378 const_eio (SYNC_FILE_RANGE_WRITE)
1379 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1380
1381 const_eio (FALLOC_FL_KEEP_SIZE)
1382 const_eio (FALLOC_FL_PUNCH_HOLE)
1383 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1384 const_eio (FALLOC_FL_ZERO_RANGE)
1385 const_eio (FALLOC_FL_INSERT_RANGE)
1386 const_eio (FALLOC_FL_UNSHARE_RANGE)
1387
1388 const_eio (RENAME_NOREPLACE)
1389 const_eio (RENAME_EXCHANGE)
1390 const_eio (RENAME_WHITEOUT)
1391
1392 const_eio (READDIR_DENTS)
1393 const_eio (READDIR_DIRS_FIRST)
1394 const_eio (READDIR_STAT_ORDER)
1395 const_eio (READDIR_FOUND_UNKNOWN)
1396
1397 const_eio (DT_UNKNOWN)
1398 const_eio (DT_FIFO)
1399 const_eio (DT_CHR)
1400 const_eio (DT_DIR)
1401 const_eio (DT_BLK)
1402 const_eio (DT_REG)
1403 const_eio (DT_LNK)
1404 const_eio (DT_SOCK)
1405 const_eio (DT_WHT)
1406 };
1407
1408 aio_stash = gv_stashpv ("IO::AIO" , 1);
1409 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1410 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1411 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1412
1413 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1414 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1415
1416 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1417
1418 /* allocate dummy pipe fd for aio_close */
912 { 1419 {
913 off_t sbytes; 1420 int pipefd [2];
914 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915 1421
916 if (res < 0 && sbytes) 1422 if (
917 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1423#ifdef _WIN32
918 res = sbytes; 1424 _pipe (pipefd, 1, _O_BINARY) < 0
1425#else
1426 pipe (pipefd) < 0
1427 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1428#endif
1429 || close (pipefd [1]) < 0
1430 )
1431 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1432
1433 close_fd = pipefd [0];
919 } 1434 }
920 1435
921# elif __hpux 1436 reinit ();
922 res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924# elif __solaris
925 {
926 struct sendfilevec vec;
927 size_t sbytes;
928
929 vec.sfv_fd = ifd;
930 vec.sfv_flag = 0;
931 vec.sfv_off = offset;
932 vec.sfv_len = count;
933
934 res = sendfilev (ofd, &vec, 1, &sbytes);
935
936 if (res < 0 && sbytes)
937 res = sbytes;
938 }
939
940# endif
941#else
942 res = -1;
943 errno = ENOSYS;
944#endif
945
946 if (res < 0
947 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948#if __solaris
949 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
950#endif
951 )
952 )
953 {
954 /* emulate sendfile. this is a major pain in the ass */
955 dBUF;
956
957 res = 0;
958
959 while (count)
960 {
961 ssize_t cnt;
962
963 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965 if (cnt <= 0)
966 {
967 if (cnt && !res) res = -1;
968 break;
969 }
970
971 cnt = write (ofd, aio_buf, cnt);
972
973 if (cnt <= 0)
974 {
975 if (cnt && !res) res = -1;
976 break;
977 }
978
979 offset += cnt;
980 res += cnt;
981 count -= cnt;
982 }
983 }
984
985 return res;
986} 1437}
987 1438
988/* read a full directory */
989static void scandir_ (aio_req req, worker *self)
990{
991 DIR *dirp;
992 union
993 {
994 struct dirent d;
995 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996 } *u;
997 struct dirent *entp;
998 char *name, *names;
999 int memlen = 4096;
1000 int memofs = 0;
1001 int res = 0;
1002 int errorno;
1003
1004 LOCK (wrklock);
1005 self->dirp = dirp = opendir (req->ptr1);
1006 self->dbuf = u = malloc (sizeof (*u));
1007 req->flags |= FLAG_PTR2_FREE;
1008 req->ptr2 = names = malloc (memlen);
1009 UNLOCK (wrklock);
1010
1011 if (dirp && u && names)
1012 for (;;)
1013 {
1014 errno = 0;
1015 readdir_r (dirp, &u->d, &entp);
1016
1017 if (!entp)
1018 break;
1019
1020 name = entp->d_name;
1021
1022 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023 {
1024 int len = strlen (name) + 1;
1025
1026 res++;
1027
1028 while (memofs + len > memlen)
1029 {
1030 memlen *= 2;
1031 LOCK (wrklock);
1032 req->ptr2 = names = realloc (names, memlen);
1033 UNLOCK (wrklock);
1034
1035 if (!names)
1036 break;
1037 }
1038
1039 memcpy (names + memofs, name, len);
1040 memofs += len;
1041 }
1042 }
1043
1044 if (errno)
1045 res = -1;
1046
1047 req->result = res;
1048}
1049
1050/*****************************************************************************/
1051
1052static void *aio_proc (void *thr_arg)
1053{
1054 aio_req req;
1055 struct timespec ts;
1056 worker *self = (worker *)thr_arg;
1057
1058 /* try to distribute timeouts somewhat evenly */
1059 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060 * (1000000000UL / 1024UL);
1061
1062 for (;;)
1063 {
1064 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066 LOCK (reqlock);
1067
1068 for (;;)
1069 {
1070 self->req = req = reqq_shift (&req_queue);
1071
1072 if (req)
1073 break;
1074
1075 ++idle;
1076
1077 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078 == ETIMEDOUT)
1079 {
1080 if (idle > max_idle)
1081 {
1082 --idle;
1083 UNLOCK (reqlock);
1084 LOCK (wrklock);
1085 --started;
1086 UNLOCK (wrklock);
1087 goto quit;
1088 }
1089
1090 /* we are allowed to idle, so do so without any timeout */
1091 pthread_cond_wait (&reqwait, &reqlock);
1092 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093 }
1094
1095 --idle;
1096 }
1097
1098 --nready;
1099
1100 UNLOCK (reqlock);
1101
1102 errno = 0; /* strictly unnecessary */
1103
1104 if (!(req->flags & FLAG_CANCELLED))
1105 switch (req->type)
1106 {
1107 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118 case REQ_CLOSE: req->result = close (req->int1); break;
1119 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128 case REQ_FSYNC: req->result = fsync (req->int1); break;
1129 case REQ_READDIR: scandir_ (req, self); break;
1130
1131 case REQ_BUSY:
1132 {
1133 struct timeval tv;
1134
1135 tv.tv_sec = req->int1;
1136 tv.tv_usec = req->int2;
1137
1138 req->result = select (0, 0, 0, 0, &tv);
1139 }
1140
1141 case REQ_GROUP:
1142 case REQ_NOP:
1143 break;
1144
1145 case REQ_QUIT:
1146 goto quit;
1147
1148 default:
1149 req->result = ENOSYS;
1150 break;
1151 }
1152
1153 req->errorno = errno;
1154
1155 LOCK (reslock);
1156
1157 ++npending;
1158
1159 if (!reqq_push (&res_queue, req))
1160 /* write a dummy byte to the pipe so fh becomes ready */
1161 write (respipe [1], &respipe, 1);
1162
1163 self->req = 0;
1164 worker_clear (self);
1165
1166 UNLOCK (reslock);
1167 }
1168
1169quit:
1170 LOCK (wrklock);
1171 worker_free (self);
1172 UNLOCK (wrklock);
1173
1174 return 0;
1175}
1176
1177/*****************************************************************************/
1178
1179static void atfork_prepare (void)
1180{
1181 LOCK (wrklock);
1182 LOCK (reqlock);
1183 LOCK (reslock);
1184#if !HAVE_PREADWRITE
1185 LOCK (preadwritelock);
1186#endif
1187#if !HAVE_READDIR_R
1188 LOCK (readdirlock);
1189#endif
1190}
1191
1192static void atfork_parent (void)
1193{
1194#if !HAVE_READDIR_R
1195 UNLOCK (readdirlock);
1196#endif
1197#if !HAVE_PREADWRITE
1198 UNLOCK (preadwritelock);
1199#endif
1200 UNLOCK (reslock);
1201 UNLOCK (reqlock);
1202 UNLOCK (wrklock);
1203}
1204
1205static void atfork_child (void)
1206{
1207 aio_req prv;
1208
1209 while (prv = reqq_shift (&req_queue))
1210 req_free (prv);
1211
1212 while (prv = reqq_shift (&res_queue))
1213 req_free (prv);
1214
1215 while (wrk_first.next != &wrk_first)
1216 {
1217 worker *wrk = wrk_first.next;
1218
1219 if (wrk->req)
1220 req_free (wrk->req);
1221
1222 worker_clear (wrk);
1223 worker_free (wrk);
1224 }
1225
1226 started = 0;
1227 idle = 0;
1228 nreqs = 0;
1229 nready = 0;
1230 npending = 0;
1231
1232 close (respipe [0]);
1233 close (respipe [1]);
1234 create_pipe ();
1235
1236 atfork_parent ();
1237}
1238
1239#define dREQ \
1240 aio_req req; \
1241 int req_pri = next_pri; \
1242 next_pri = DEFAULT_PRI + PRI_BIAS; \
1243 \
1244 if (SvOK (callback) && !SvROK (callback)) \
1245 croak ("callback must be undef or of reference type"); \
1246 \
1247 Newz (0, req, 1, aio_cb); \
1248 if (!req) \
1249 croak ("out of memory during aio_req allocation"); \
1250 \
1251 req->callback = newSVsv (callback); \
1252 req->pri = req_pri
1253
1254#define REQ_SEND \
1255 req_send (req); \
1256 \
1257 if (GIMME_V != G_VOID) \
1258 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259
1260MODULE = IO::AIO PACKAGE = IO::AIO
1261
1262PROTOTYPES: ENABLE
1263
1264BOOT:
1265{
1266 HV *stash = gv_stashpv ("IO::AIO", 1);
1267
1268 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1269 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1270 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274
1275 create_pipe ();
1276 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1277}
1278
1279void 1439void
1440reinit ()
1441 PROTOTYPE:
1442
1443void
1280max_poll_reqs (int nreqs) 1444max_poll_reqs (unsigned int nreqs)
1281 PROTOTYPE: $ 1445 PROTOTYPE: $
1282 CODE: 1446 CODE:
1283 max_poll_reqs = nreqs; 1447 eio_set_max_poll_reqs (nreqs);
1284 1448
1285void 1449void
1286max_poll_time (double nseconds) 1450max_poll_time (double nseconds)
1287 PROTOTYPE: $ 1451 PROTOTYPE: $
1288 CODE: 1452 CODE:
1289 max_poll_time = nseconds * AIO_TICKS; 1453 eio_set_max_poll_time (nseconds);
1290 1454
1291void 1455void
1292min_parallel (int nthreads) 1456min_parallel (unsigned int nthreads)
1293 PROTOTYPE: $
1294
1295void
1296max_parallel (int nthreads)
1297 PROTOTYPE: $
1298
1299void
1300max_idle (int nthreads)
1301 PROTOTYPE: $ 1457 PROTOTYPE: $
1302 CODE: 1458 CODE:
1303 set_max_idle (nthreads); 1459 eio_set_min_parallel (nthreads);
1304 1460
1305int 1461void
1306max_outstanding (int maxreqs) 1462max_parallel (unsigned int nthreads)
1307 PROTOTYPE: $ 1463 PROTOTYPE: $
1308 CODE: 1464 CODE:
1309 RETVAL = max_outstanding; 1465 eio_set_max_parallel (nthreads);
1466
1467void
1468max_idle (unsigned int nthreads)
1469 PROTOTYPE: $
1470 CODE:
1471 eio_set_max_idle (nthreads);
1472
1473void
1474idle_timeout (unsigned int seconds)
1475 PROTOTYPE: $
1476 CODE:
1477 eio_set_idle_timeout (seconds);
1478
1479void
1480max_outstanding (unsigned int maxreqs)
1481 PROTOTYPE: $
1482 CODE:
1310 max_outstanding = maxreqs; 1483 max_outstanding = maxreqs;
1311 OUTPUT:
1312 RETVAL
1313 1484
1314void 1485void
1315aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1486aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1316 SV8 * pathname
1317 int flags
1318 int mode
1319 SV * callback
1320 PROTOTYPE: $$$;$
1321 PPCODE: 1487 PPCODE:
1322{ 1488{
1323 dREQ; 1489 dREQ;
1324 1490
1491 req->type = EIO_WD_OPEN;
1492 req_set_path1 (req, pathname);
1493
1494 REQ_SEND;
1495}
1496
1497void
1498aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1499 PPCODE:
1500{
1501 dREQ;
1502
1325 req->type = REQ_OPEN; 1503 req->type = EIO_OPEN;
1326 req->sv1 = newSVsv (pathname); 1504 req_set_path1 (req, pathname);
1327 req->ptr1 = SvPVbyte_nolen (req->sv1);
1328 req->int1 = flags; 1505 req->int1 = flags;
1329 req->mode = mode; 1506 req->int2 = mode;
1330 1507
1331 REQ_SEND; 1508 REQ_SEND;
1332} 1509}
1333 1510
1334void 1511void
1335aio_close (fh,callback=&PL_sv_undef) 1512aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1336 SV * fh
1337 SV * callback
1338 PROTOTYPE: $;$
1339 ALIAS: 1513 ALIAS:
1340 aio_close = REQ_CLOSE
1341 aio_fsync = REQ_FSYNC 1514 aio_fsync = EIO_FSYNC
1342 aio_fdatasync = REQ_FDATASYNC 1515 aio_fdatasync = EIO_FDATASYNC
1516 aio_syncfs = EIO_SYNCFS
1343 PPCODE: 1517 PPCODE:
1344{ 1518{
1519 int fd = s_fileno_croak (fh, 0);
1345 dREQ; 1520 dREQ;
1346 1521
1347 req->type = ix; 1522 req->type = ix;
1348 req->fh = newSVsv (fh); 1523 req->sv1 = newSVsv (fh);
1349 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1524 req->int1 = fd;
1350 1525
1351 REQ_SEND (req); 1526 REQ_SEND;
1352} 1527}
1353 1528
1354void 1529void
1530aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1531 PPCODE:
1532{
1533 int fd = s_fileno_croak (fh, 0);
1534 dREQ;
1535
1536 req->type = EIO_SYNC_FILE_RANGE;
1537 req->sv1 = newSVsv (fh);
1538 req->int1 = fd;
1539 req->offs = offset;
1540 req->size = nbytes;
1541 req->int2 = flags;
1542
1543 REQ_SEND;
1544}
1545
1546void
1547aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1548 PPCODE:
1549{
1550 int fd = s_fileno_croak (fh, 0);
1551 dREQ;
1552
1553 req->type = EIO_FALLOCATE;
1554 req->sv1 = newSVsv (fh);
1555 req->int1 = fd;
1556 req->int2 = mode;
1557 req->offs = offset;
1558 req->size = len;
1559
1560 REQ_SEND;
1561}
1562
1563void
1564aio_close (SV *fh, SV *callback = &PL_sv_undef)
1565 PPCODE:
1566{
1567 int fd = s_fileno_croak (fh, 0);
1568 dREQ;
1569#if 0
1570 /* partially duplicate logic in s_fileno */
1571 SvGETMAGIC (fh);
1572
1573 if (SvROK (fh))
1574 {
1575 fh = SvRV (fh);
1576 SvGETMAGIC (fh);
1577 }
1578
1579 if (SvTYPE (fh) == SVt_PVGV)
1580 {
1581 /* perl filehandle */
1582 PerlIOUnix_refcnt_inc (fd);
1583 do_close ((GV *)fh, 1);
1584
1585 req->type = EIO_CLOSE;
1586 req->int1 = fd;
1587 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1588 }
1589 else
1590#endif
1591 {
1592 /* fd number */
1593 req->type = EIO_DUP2;
1594 req->int1 = close_fd;
1595 req->sv2 = newSVsv (fh);
1596 req->int2 = fd;
1597 }
1598
1599 REQ_SEND;
1600}
1601
1602void
1603aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1604 PPCODE:
1605{
1606 int fd = s_fileno_croak (fh, 0);
1607 dREQ;
1608
1609 req->type = EIO_SEEK;
1610 req->sv1 = newSVsv (fh);
1611 req->int1 = fd;
1612 req->offs = SvVAL64 (offset);
1613 req->int2 = whence;
1614
1615 REQ_SEND;
1616}
1617
1618void
1355aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1619aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1356 SV * fh
1357 UV offset
1358 UV length
1359 SV8 * data
1360 UV dataoffset
1361 SV * callback
1362 ALIAS: 1620 ALIAS:
1363 aio_read = REQ_READ 1621 aio_read = EIO_READ
1364 aio_write = REQ_WRITE 1622 aio_write = EIO_WRITE
1365 PROTOTYPE: $$$$$;$
1366 PPCODE: 1623 PPCODE:
1367{ 1624{
1368 STRLEN svlen; 1625 STRLEN svlen;
1626 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369 char *svptr = SvPVbyte (data, svlen); 1627 char *svptr = SvPVbyte (data, svlen);
1370 1628 UV len = SvUV (length);
1371 SvUPGRADE (data, SVt_PV);
1372 SvPOK_on (data);
1373 1629
1374 if (dataoffset < 0) 1630 if (dataoffset < 0)
1375 dataoffset += svlen; 1631 dataoffset += svlen;
1376 1632
1377 if (dataoffset < 0 || dataoffset > svlen) 1633 if (dataoffset < 0 || dataoffset > svlen)
1378 croak ("data offset outside of string"); 1634 croak ("dataoffset outside of data scalar");
1379 1635
1380 if (ix == REQ_WRITE) 1636 if (ix == EIO_WRITE)
1381 { 1637 {
1382 /* write: check length and adjust. */ 1638 /* write: check length and adjust. */
1383 if (length < 0 || length + dataoffset > svlen) 1639 if (!SvOK (length) || len + dataoffset > svlen)
1384 length = svlen - dataoffset; 1640 len = svlen - dataoffset;
1385 } 1641 }
1386 else 1642 else
1387 { 1643 {
1388 /* read: grow scalar as necessary */ 1644 /* read: check type and grow scalar as necessary */
1645 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1389 svptr = SvGROW (data, length + dataoffset); 1646 svptr = sv_grow (data, len + dataoffset + 1);
1647 else if (SvCUR (data) < len + dataoffset)
1648 croak ("length + dataoffset outside of scalar, and cannot grow");
1390 } 1649 }
1391
1392 if (length < 0)
1393 croak ("length must not be negative");
1394 1650
1395 { 1651 {
1396 dREQ; 1652 dREQ;
1397 1653
1398 req->type = ix; 1654 req->type = ix;
1399 req->fh = newSVsv (fh); 1655 req->sv1 = newSVsv (fh);
1400 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1656 req->int1 = fd;
1401 : IoOFP (sv_2io (fh))); 1657 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402 req->offs = offset;
1403 req->size = length; 1658 req->size = len;
1404 req->sv1 = SvREFCNT_inc (data); 1659 req->sv2 = SvREFCNT_inc (data);
1405 req->ptr1 = (char *)svptr + dataoffset; 1660 req->ptr2 = (char *)svptr + dataoffset;
1406 req->stroffset = dataoffset; 1661 req->stroffset = dataoffset;
1407 1662
1408 if (!SvREADONLY (data)) 1663 if (!SvREADONLY (data))
1409 { 1664 {
1410 SvREADONLY_on (data); 1665 SvREADONLY_on (data);
1411 req->flags |= FLAG_SV1_RO_OFF; 1666 req->flags |= FLAG_SV2_RO_OFF;
1412 } 1667 }
1413 1668
1414 REQ_SEND; 1669 REQ_SEND;
1415 } 1670 }
1416} 1671}
1417 1672
1418void 1673void
1419aio_readlink (path,callback=&PL_sv_undef) 1674aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1420 SV8 * path 1675 ALIAS:
1421 SV * callback 1676 aio_ioctl = EIO_IOCTL
1422 PROTOTYPE: $$;$ 1677 aio_fcntl = EIO_FCNTL
1423 PPCODE: 1678 PPCODE:
1424{ 1679{
1425 SV *data; 1680 int fd = s_fileno_croak (fh, 0);
1681 char *svptr;
1682
1683 if (SvPOK (arg) || !SvNIOK (arg))
1684 {
1685 STRLEN svlen;
1686 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1687#ifdef IOCPARM_LEN
1688 STRLEN need = IOCPARM_LEN (request);
1689#else
1690 STRLEN need = 256;
1691#endif
1692
1693 if (svlen < need)
1694 svptr = SvGROW (arg, need);
1695 }
1696 else
1697 svptr = (char *)SvIV (arg);
1698
1699 {
1700 dREQ;
1701
1702 req->type = ix;
1703 req->sv1 = newSVsv (fh);
1704 req->int1 = fd;
1705 req->int2 = (long)request;
1706 req->sv2 = SvREFCNT_inc (arg);
1707 req->ptr2 = svptr;
1708
1709 REQ_SEND;
1710 }
1711}
1712
1713void
1714aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1715 ALIAS:
1716 aio_readlink = EIO_READLINK
1717 aio_realpath = EIO_REALPATH
1718 PPCODE:
1719{
1426 dREQ; 1720 dREQ;
1427 1721
1428 data = newSV (NAME_MAX);
1429 SvPOK_on (data);
1430
1431 req->type = REQ_READLINK; 1722 req->type = ix;
1432 req->fh = newSVsv (path); 1723 req_set_path1 (req, pathname);
1433 req->ptr2 = SvPVbyte_nolen (req->fh);
1434 req->sv1 = data;
1435 req->ptr1 = SvPVbyte_nolen (data);
1436 1724
1437 REQ_SEND; 1725 REQ_SEND;
1438} 1726}
1439 1727
1440void 1728void
1441aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1729aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1442 SV * out_fh
1443 SV * in_fh
1444 UV in_offset
1445 UV length
1446 SV * callback
1447 PROTOTYPE: $$$$;$
1448 PPCODE: 1730 PPCODE:
1449{ 1731{
1732 int ifd = s_fileno_croak (in_fh , 0);
1733 int ofd = s_fileno_croak (out_fh, 1);
1450 dREQ; 1734 dREQ;
1451 1735
1452 req->type = REQ_SENDFILE; 1736 req->type = EIO_SENDFILE;
1453 req->fh = newSVsv (out_fh); 1737 req->sv1 = newSVsv (out_fh);
1454 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1738 req->int1 = ofd;
1455 req->sv2 = newSVsv (in_fh); 1739 req->sv2 = newSVsv (in_fh);
1456 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1740 req->int2 = ifd;
1457 req->offs = in_offset; 1741 req->offs = in_offset;
1458 req->size = length; 1742 req->size = length;
1459 1743
1460 REQ_SEND; 1744 REQ_SEND;
1461} 1745}
1462 1746
1463void 1747void
1464aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1748aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1465 SV * fh
1466 UV offset
1467 IV length
1468 SV * callback
1469 PROTOTYPE: $$$;$
1470 PPCODE: 1749 PPCODE:
1471{ 1750{
1751 int fd = s_fileno_croak (fh, 0);
1472 dREQ; 1752 dREQ;
1473 1753
1474 req->type = REQ_READAHEAD; 1754 req->type = EIO_READAHEAD;
1475 req->fh = newSVsv (fh); 1755 req->sv1 = newSVsv (fh);
1476 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1756 req->int1 = fd;
1477 req->offs = offset; 1757 req->offs = offset;
1478 req->size = length; 1758 req->size = length;
1479 1759
1480 REQ_SEND; 1760 REQ_SEND;
1481} 1761}
1482 1762
1483void 1763void
1484aio_stat (fh_or_path,callback=&PL_sv_undef) 1764aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1485 SV8 * fh_or_path
1486 SV * callback
1487 ALIAS: 1765 ALIAS:
1488 aio_stat = REQ_STAT 1766 aio_stat = EIO_STAT
1489 aio_lstat = REQ_LSTAT 1767 aio_lstat = EIO_LSTAT
1768 aio_statvfs = EIO_STATVFS
1490 PPCODE: 1769 PPCODE:
1491{ 1770{
1492 dREQ; 1771 dREQ;
1493 1772
1494 req->ptr2 = malloc (sizeof (Stat_t)); 1773 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1495 if (!req->ptr2)
1496 {
1497 req_free (req);
1498 croak ("out of memory during aio_stat statdata allocation");
1499 }
1500
1501 req->flags |= FLAG_PTR2_FREE;
1502
1503 if (SvPOK (fh_or_path))
1504 {
1505 req->type = ix;
1506 req->sv1 = newSVsv (fh_or_path);
1507 req->ptr1 = SvPVbyte_nolen (req->sv1);
1508 }
1509 else
1510 {
1511 req->type = REQ_FSTAT;
1512 req->fh = newSVsv (fh_or_path);
1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514 }
1515 1774
1516 REQ_SEND; 1775 REQ_SEND;
1517} 1776}
1518 1777
1519void 1778void
1779st_xtime ()
1780 ALIAS:
1781 st_atime = 0x01
1782 st_mtime = 0x02
1783 st_ctime = 0x04
1784 st_btime = 0x08
1785 st_xtime = 0x0f
1786 PPCODE:
1787 EXTEND (SP, 4);
1788 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1789 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1790 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1791 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1792
1793void
1794st_xtimensec ()
1795 ALIAS:
1796 st_atimensec = 0x01
1797 st_mtimensec = 0x02
1798 st_ctimensec = 0x04
1799 st_btimensec = 0x08
1800 st_xtimensec = 0x0f
1801 st_btimesec = 0x10
1802 st_gen = 0x20
1803 PPCODE:
1804 EXTEND (SP, 4);
1805 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1806 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1807 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1808 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1809 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1810 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1811
1812UV
1813major (UV dev)
1814 ALIAS:
1815 minor = 1
1816 CODE:
1817 RETVAL = ix ? minor (dev) : major (dev);
1818 OUTPUT:
1819 RETVAL
1820
1821UV
1822makedev (UV maj, UV min)
1823 CODE:
1824 RETVAL = makedev (maj, min);
1825 OUTPUT:
1826 RETVAL
1827
1828void
1829aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1830 PPCODE:
1831{
1832 dREQ;
1833
1834 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1835 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1836 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1837
1838 REQ_SEND;
1839}
1840
1841void
1842aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1843 PPCODE:
1844{
1845 dREQ;
1846
1847 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1848 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1849
1850 REQ_SEND;
1851}
1852
1853void
1854aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1855 PPCODE:
1856{
1857 dREQ;
1858
1859 req->int2 = mode;
1860 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1861
1862 REQ_SEND;
1863}
1864
1865void
1866aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1867 PPCODE:
1868{
1869 dREQ;
1870
1871 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1872 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1873 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1874
1875 REQ_SEND;
1876}
1877
1878void
1879aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1880 PPCODE:
1881{
1882 dREQ;
1883
1884 req->type = EIO_READDIR;
1885 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1886
1887 if (flags & EIO_READDIR_DENTS)
1888 req->int1 |= EIO_READDIR_CUSTOM2;
1889
1890 req_set_path1 (req, pathname);
1891
1892 REQ_SEND;
1893}
1894
1895void
1896aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1897 PPCODE:
1898{
1899 dREQ;
1900
1901 req->type = EIO_MKDIR;
1902 req->int2 = mode;
1903 req_set_path1 (req, pathname);
1904
1905 REQ_SEND;
1906}
1907
1908void
1520aio_unlink (pathname,callback=&PL_sv_undef) 1909aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1521 SV8 * pathname
1522 SV * callback
1523 ALIAS: 1910 ALIAS:
1524 aio_unlink = REQ_UNLINK 1911 aio_unlink = EIO_UNLINK
1525 aio_rmdir = REQ_RMDIR 1912 aio_rmdir = EIO_RMDIR
1526 aio_readdir = REQ_READDIR 1913 aio_readdir = EIO_READDIR
1527 PPCODE: 1914 PPCODE:
1528{ 1915{
1529 dREQ; 1916 dREQ;
1530 1917
1531 req->type = ix; 1918 req->type = ix;
1532 req->sv1 = newSVsv (pathname); 1919 req_set_path1 (req, pathname);
1533 req->ptr1 = SvPVbyte_nolen (req->sv1);
1534 1920
1535 REQ_SEND; 1921 REQ_SEND;
1536} 1922}
1537 1923
1538void 1924void
1539aio_link (oldpath,newpath,callback=&PL_sv_undef) 1925aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1540 SV8 * oldpath
1541 SV8 * newpath
1542 SV * callback
1543 ALIAS: 1926 ALIAS:
1544 aio_link = REQ_LINK 1927 aio_link = EIO_LINK
1545 aio_symlink = REQ_SYMLINK 1928 aio_symlink = EIO_SYMLINK
1546 aio_rename = REQ_RENAME 1929 aio_rename = EIO_RENAME
1547 PPCODE: 1930 PPCODE:
1548{ 1931{
1932 eio_wd wd2 = 0;
1549 dREQ; 1933 dREQ;
1550 1934
1551 req->type = ix; 1935 req->type = ix;
1552 req->fh = newSVsv (oldpath); 1936 req_set_path1 (req, oldpath);
1553 req->ptr2 = SvPVbyte_nolen (req->fh); 1937 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1554 req->sv1 = newSVsv (newpath); 1938 req->int3 = (long)wd2;
1555 req->ptr1 = SvPVbyte_nolen (req->sv1);
1556 1939
1557 REQ_SEND; 1940 REQ_SEND;
1558} 1941}
1559 1942
1560void 1943void
1561aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1944aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1562 SV8 * pathname
1563 SV * callback
1564 UV mode
1565 UV dev
1566 PPCODE: 1945 PPCODE:
1567{ 1946{
1947 eio_wd wd2 = 0;
1568 dREQ; 1948 dREQ;
1569 1949
1570 req->type = REQ_MKNOD; 1950 req->type = EIO_RENAME;
1571 req->sv1 = newSVsv (pathname); 1951 req_set_path1 (req, oldpath);
1572 req->ptr1 = SvPVbyte_nolen (req->sv1); 1952 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1573 req->mode = (mode_t)mode; 1953 req->int2 = flags;
1574 req->offs = dev; 1954 req->int3 = (long)wd2;
1575 1955
1576 REQ_SEND; 1956 REQ_SEND;
1577} 1957}
1578 1958
1579void 1959void
1580aio_busy (delay,callback=&PL_sv_undef) 1960aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1581 double delay
1582 SV * callback
1583 PPCODE: 1961 PPCODE:
1584{ 1962{
1585 dREQ; 1963 dREQ;
1586 1964
1587 req->type = REQ_BUSY; 1965 req->type = EIO_MKNOD;
1588 req->int1 = delay < 0. ? 0 : delay; 1966 req->int2 = (mode_t)mode;
1589 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1967 req->offs = dev;
1590 1968 req_set_path1 (req, pathname);
1969
1591 REQ_SEND; 1970 REQ_SEND;
1592} 1971}
1593 1972
1594void 1973void
1595aio_group (callback=&PL_sv_undef) 1974aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1596 SV * callback 1975 ALIAS:
1597 PROTOTYPE: ;$ 1976 aio_mtouch = EIO_MTOUCH
1977 aio_msync = EIO_MSYNC
1598 PPCODE: 1978 PPCODE:
1599{ 1979{
1980 STRLEN svlen;
1981 char *svptr = SvPVbyte (data, svlen);
1982 UV len = SvUV (length);
1983
1984 if (flags < 0)
1985 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1986
1987 if (offset < 0)
1988 offset += svlen;
1989
1990 if (offset < 0 || offset > svlen)
1991 croak ("offset outside of scalar");
1992
1993 if (!SvOK (length) || len + offset > svlen)
1994 len = svlen - offset;
1995
1996 {
1997 dREQ;
1998
1999 req->type = ix;
2000 req->sv2 = SvREFCNT_inc (data);
2001 req->ptr2 = (char *)svptr + offset;
2002 req->size = len;
2003 req->int1 = flags;
2004
2005 REQ_SEND;
2006 }
2007}
2008
2009void
2010aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
2011 PPCODE:
2012{
2013 STRLEN svlen;
2014 char *svptr = SvPVbyte (data, svlen);
2015 UV len = SvUV (length);
2016
2017 if (offset < 0)
2018 offset += svlen;
2019
2020 if (offset < 0 || offset > svlen)
2021 croak ("offset outside of scalar");
2022
2023 if (!SvOK (length) || len + offset > svlen)
2024 len = svlen - offset;
2025
2026 {
2027 dREQ;
2028
2029 req->type = EIO_MLOCK;
2030 req->sv2 = SvREFCNT_inc (data);
2031 req->ptr2 = (char *)svptr + offset;
2032 req->size = len;
2033
2034 REQ_SEND;
2035 }
2036}
2037
2038void
2039aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
2040 PPCODE:
2041{
2042 dREQ;
2043
2044 req->type = EIO_MLOCKALL;
2045 req->int1 = flags;
2046
2047 REQ_SEND;
2048}
2049
2050void
2051aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
2052 PPCODE:
2053{
2054 int fd = s_fileno_croak (fh, 0);
1600 dREQ; 2055 dREQ;
1601 2056
1602 req->type = REQ_GROUP; 2057 req->type = EIO_CUSTOM;
2058 req->sv1 = newSVsv (fh);
2059 req->int1 = fd;
1603 2060
1604 req_send (req); 2061 req->feed = fiemap;
1605 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2062#if HAVE_FIEMAP
1606} 2063 /* keep our fingers crossed that the next two types are 64 bit */
2064 req->offs = start;
2065 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
2066 req->int2 = flags;
2067 req->int3 = SvOK (count) ? SvIV (count) : -1;
2068#endif
1607 2069
2070 REQ_SEND;
2071}
2072
1608void 2073void
1609aio_nop (callback=&PL_sv_undef) 2074aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1610 SV * callback 2075 PPCODE:
2076{
2077 char *svptr = 0;
2078
2079 sv_clear_foreign (data);
2080
2081 if (length) /* known length, directly read into scalar */
2082 {
2083 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2084 svptr = sv_grow (data, length + 1);
2085 else if (SvCUR (data) < length)
2086 croak ("length outside of scalar, and cannot grow");
2087 else
2088 svptr = SvPVbyte_nolen (data);
2089 }
2090
2091 {
2092 dREQ;
2093
2094 req->type = EIO_SLURP;
2095 req_set_path1 (req, pathname);
2096 req->offs = offset;
2097 req->size = length;
2098 req->sv2 = SvREFCNT_inc (data);
2099 req->ptr2 = svptr;
2100
2101 if (!SvREADONLY (data))
2102 {
2103 SvREADONLY_on (data);
2104 req->flags |= FLAG_SV2_RO_OFF;
2105 }
2106
2107 REQ_SEND;
2108 }
2109}
2110
2111void
2112aio_busy (double delay, SV *callback = &PL_sv_undef)
1611 PPCODE: 2113 PPCODE:
1612{ 2114{
1613 dREQ; 2115 dREQ;
1614 2116
1615 req->type = REQ_NOP; 2117 req->type = EIO_BUSY;
2118 req->nv1 = delay < 0. ? 0. : delay;
1616 2119
1617 REQ_SEND; 2120 REQ_SEND;
1618} 2121}
1619 2122
2123void
2124aio_group (SV *callback = &PL_sv_undef)
2125 PPCODE:
2126{
2127 dREQ;
2128
2129 req->type = EIO_GROUP;
2130
2131 PUTBACK;
2132 req_submit (req);
2133 SPAGAIN;
2134
2135 XPUSHs (req_sv (req, aio_grp_stash));
2136}
2137
2138void
2139aio_nop (SV *callback = &PL_sv_undef)
2140 ALIAS:
2141 aio_nop = EIO_NOP
2142 aio_sync = EIO_SYNC
2143 PPCODE:
2144{
2145 dREQ;
2146
2147 req->type = ix;
2148
2149 REQ_SEND;
2150}
2151
1620int 2152int
1621aioreq_pri (int pri = 0) 2153aioreq_pri (int pri = NO_INIT)
1622 PROTOTYPE: ;$
1623 CODE: 2154 CODE:
1624 RETVAL = next_pri - PRI_BIAS; 2155 RETVAL = next_pri;
1625 if (items > 0) 2156 if (items > 0)
1626 { 2157 {
1627 if (pri < PRI_MIN) pri = PRI_MIN; 2158 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628 if (pri > PRI_MAX) pri = PRI_MAX; 2159 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629 next_pri = pri + PRI_BIAS; 2160 next_pri = pri;
1630 } 2161 }
1631 OUTPUT: 2162 OUTPUT:
1632 RETVAL 2163 RETVAL
1633 2164
1634void 2165void
1635aioreq_nice (int nice = 0) 2166aioreq_nice (int nice = 0)
1636 CODE: 2167 CODE:
1637 nice = next_pri - nice; 2168 nice = next_pri - nice;
1638 if (nice < PRI_MIN) nice = PRI_MIN; 2169 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639 if (nice > PRI_MAX) nice = PRI_MAX; 2170 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640 next_pri = nice + PRI_BIAS; 2171 next_pri = nice;
1641 2172
1642void 2173void
1643flush () 2174flush ()
1644 PROTOTYPE:
1645 CODE: 2175 CODE:
1646 while (nreqs) 2176 while (eio_nreqs ())
1647 { 2177 {
1648 poll_wait (); 2178 poll_wait ();
1649 poll_cb (); 2179 poll_cb ();
1650 } 2180 }
1651 2181
1652int 2182int
1653poll() 2183poll ()
1654 PROTOTYPE:
1655 CODE: 2184 CODE:
1656 poll_wait (); 2185 poll_wait ();
1657 RETVAL = poll_cb (); 2186 RETVAL = poll_cb ();
1658 OUTPUT: 2187 OUTPUT:
1659 RETVAL 2188 RETVAL
1660 2189
1661int 2190int
1662poll_fileno() 2191poll_fileno ()
1663 PROTOTYPE:
1664 CODE: 2192 CODE:
1665 RETVAL = respipe [0]; 2193 RETVAL = s_epipe_fd (&respipe);
1666 OUTPUT: 2194 OUTPUT:
1667 RETVAL 2195 RETVAL
1668 2196
1669int 2197int
1670poll_cb(...) 2198poll_cb (...)
1671 PROTOTYPE: 2199 PROTOTYPE:
1672 CODE: 2200 CODE:
1673 RETVAL = poll_cb (); 2201 RETVAL = poll_cb ();
1674 OUTPUT: 2202 OUTPUT:
1675 RETVAL 2203 RETVAL
1676 2204
1677void 2205void
1678poll_wait() 2206poll_wait ()
2207 CODE:
2208 poll_wait ();
2209
2210int
2211nreqs ()
2212 CODE:
2213 RETVAL = eio_nreqs ();
2214 OUTPUT:
2215 RETVAL
2216
2217int
2218nready ()
2219 CODE:
2220 RETVAL = eio_nready ();
2221 OUTPUT:
2222 RETVAL
2223
2224int
2225npending ()
2226 CODE:
2227 RETVAL = eio_npending ();
2228 OUTPUT:
2229 RETVAL
2230
2231int
2232nthreads ()
2233 CODE:
2234 RETVAL = eio_nthreads ();
2235 OUTPUT:
2236 RETVAL
2237
2238int
2239fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2240 CODE:
2241 RETVAL = posix_fadvise (fh, offset, length, advice);
2242 OUTPUT:
2243 RETVAL
2244
2245IV
2246sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2247 CODE:
2248 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2249 OUTPUT:
2250 RETVAL
2251
2252void
2253mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2254 PPCODE:
2255 sv_clear_foreign (scalar);
2256{
2257 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2258 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2259 if (addr == (void *)-1)
2260 XSRETURN_NO;
2261
2262 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2263
2264 if (!(prot & PROT_WRITE))
2265 SvREADONLY_on (scalar);
2266
2267 XSRETURN_YES;
2268}
2269
2270void
2271munmap (SV *scalar)
2272 CODE:
2273 sv_clear_foreign (scalar);
2274
2275SV *
2276mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2277 CODE:
2278{
2279 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2280 void *new;
2281
2282 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2283 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2284
2285 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2286
2287 RETVAL = &PL_sv_no;
2288
2289 if (new != (void *)-1)
2290 {
2291 RETVAL = new == (void *)mg->mg_ptr
2292 ? newSVpvn ("0 but true", 10)
2293 : &PL_sv_yes;
2294
2295 mg->mg_ptr = (char *)new;
2296 mg->mg_obj = (SV *)new_length;
2297
2298 SvPVX (scalar) = mg->mg_ptr;
2299 SvCUR_set (scalar, new_length);
2300 }
2301}
2302 OUTPUT:
2303 RETVAL
2304
2305int
2306madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2307 ALIAS:
2308 mprotect = 1
2309 CODE:
2310{
2311 STRLEN svlen;
2312 void *addr = SvPVbyte (scalar, svlen);
2313 STRLEN len = SvUV (length);
2314
2315 if (offset < 0)
2316 offset += svlen;
2317
2318 if (offset < 0 || offset > svlen)
2319 croak ("offset outside of scalar");
2320
2321 if (!SvOK (length) || len + offset > svlen)
2322 len = svlen - offset;
2323
2324 addr = (void *)(((intptr_t)addr) + offset);
2325 eio_page_align (&addr, &len);
2326
2327 switch (ix)
2328 {
2329 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2330 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2331 }
2332}
2333 OUTPUT:
2334 RETVAL
2335
2336int
2337munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2338 CODE:
2339{
2340 STRLEN svlen;
2341 void *addr = SvPVbyte (scalar, svlen);
2342 size_t len = SvUV (length);
2343
2344 if (offset < 0)
2345 offset += svlen;
2346
2347 if (offset < 0 || offset > svlen)
2348 croak ("offset outside of scalar");
2349
2350 if (!SvOK (length) || len + offset > svlen)
2351 len = svlen - offset;
2352
2353 addr = (void *)(((intptr_t)addr) + offset);
2354 eio_page_align (&addr, &len);
2355#if _POSIX_MEMLOCK_RANGE
2356 RETVAL = munlock (addr, len);
2357#else
2358 RETVAL = EIO_ENOSYS ();
2359#endif
2360}
2361 OUTPUT:
2362 RETVAL
2363
2364int
2365mlockall (int flags)
2366 PROTOTYPE: $;
2367 CODE:
2368 RETVAL = eio_mlockall_sync (flags);
2369 OUTPUT:
2370 RETVAL
2371
2372int
2373munlockall ()
2374 CODE:
2375#if _POSIX_MEMLOCK
2376 munlockall ();
2377#else
2378 RETVAL = EIO_ENOSYS ();
2379#endif
2380 OUTPUT:
2381 RETVAL
2382
2383int
2384statx (SV8 *pathname, int flags, UV mask)
2385 CODE:
2386{
2387 /* undocumented, and might go away, and anyway, should use eio_statx */
2388 SV *wdsv = 0;
2389 SV *pathsv = 0;
2390 eio_wd wd = EIO_CWD;
2391 void *ptr;
2392 int res;
2393
2394 req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
2395 RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
2396
2397 SvREFCNT_dec (pathsv);
2398 SvREFCNT_dec (wdsv);
2399}
2400 OUTPUT:
2401 RETVAL
2402
2403U32
2404stx_mode ()
1679 PROTOTYPE: 2405 PROTOTYPE:
1680 CODE: 2406 CODE:
1681 poll_wait (); 2407#if HAVE_STATX
2408 RETVAL = stx.stx_mode;
2409#else
2410 XSRETURN_UNDEF;
2411#endif
2412 OUTPUT:
2413 RETVAL
2414
2415#define STATX_OFFSET_mask statx_offsetof (stx_mask)
2416#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
2417#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
2418#define STATX_OFFSET_uid statx_offsetof (stx_uid)
2419#define STATX_OFFSET_gid statx_offsetof (stx_gid)
2420#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
2421#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
2422#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
2423#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
2424#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
2425#define STATX_OFFSET_ino statx_offsetof (stx_ino)
2426#define STATX_OFFSET_size statx_offsetof (stx_size)
2427#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
2428#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
2429#define STATX_OFFSET_atime statx_offsetof (stx_atime)
2430#define STATX_OFFSET_btime statx_offsetof (stx_btime)
2431#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
2432#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
2433
2434U32
2435stx_mask ()
2436 PROTOTYPE:
2437 ALIAS:
2438 stx_mask = STATX_OFFSET_mask
2439 stx_blksize = STATX_OFFSET_blksize
2440 stx_nlink = STATX_OFFSET_nlink
2441 stx_uid = STATX_OFFSET_uid
2442 stx_gid = STATX_OFFSET_gid
2443 stx_rdev_major = STATX_OFFSET_rdev_major
2444 stx_rdev_minor = STATX_OFFSET_rdev_minor
2445 stx_dev_major = STATX_OFFSET_dev_major
2446 stx_dev_minor = STATX_OFFSET_dev_minor
2447 CODE:
2448#if HAVE_STATX
2449 RETVAL = *(__u32 *)((char *)&stx + ix);
2450#else
2451 XSRETURN_UNDEF;
2452#endif
2453 OUTPUT:
2454 RETVAL
2455
2456VAL64
2457stx_attributes ()
2458 PROTOTYPE:
2459 ALIAS:
2460 stx_attributes = STATX_OFFSET_attributes
2461 stx_ino = STATX_OFFSET_ino
2462 stx_size = STATX_OFFSET_size
2463 stx_blocks = STATX_OFFSET_blocks
2464 stx_attributes_mask = STATX_OFFSET_attributes_mask
2465 CODE:
2466#if HAVE_STATX
2467 RETVAL = *(__u64 *)((char *)&stx + ix);
2468#else
2469 XSRETURN_UNDEF;
2470#endif
2471 OUTPUT:
2472 RETVAL
2473
2474NV
2475stx_atime ()
2476 PROTOTYPE:
2477 ALIAS:
2478 stx_atime = STATX_OFFSET_atime
2479 stx_btime = STATX_OFFSET_btime
2480 stx_ctime = STATX_OFFSET_ctime
2481 stx_mtime = STATX_OFFSET_mtime
2482 CODE:
2483#if HAVE_STATX
2484 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2485 RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
2486#else
2487 XSRETURN_UNDEF;
2488#endif
2489 OUTPUT:
2490 RETVAL
2491
2492VAL64
2493stx_atimesec ()
2494 PROTOTYPE:
2495 ALIAS:
2496 stx_atimesec = STATX_OFFSET_atime
2497 stx_btimesec = STATX_OFFSET_btime
2498 stx_ctimesec = STATX_OFFSET_ctime
2499 stx_mtimesec = STATX_OFFSET_mtime
2500 CODE:
2501#if HAVE_STATX
2502 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2503 RETVAL = ts->tv_sec;
2504#else
2505 XSRETURN_UNDEF;
2506#endif
2507 OUTPUT:
2508 RETVAL
2509
2510U32
2511stx_atimensec ()
2512 PROTOTYPE:
2513 ALIAS:
2514 stx_atimensec = STATX_OFFSET_atime
2515 stx_btimensec = STATX_OFFSET_btime
2516 stx_ctimensec = STATX_OFFSET_ctime
2517 stx_mtimensec = STATX_OFFSET_mtime
2518 CODE:
2519#if HAVE_STATX
2520 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2521 RETVAL = ts->tv_nsec;
2522#else
2523 RETVAL = 0;
2524#endif
2525 OUTPUT:
2526 RETVAL
2527
2528void
2529accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
2530 PPCODE:
2531{
2532 SV *retval;
2533#if HAVE_ACCEPT4
2534 socklen_t salen_ = salen ? salen + 1 : 0;
2535
2536 if (salen)
2537 {
2538 sv_upgrade (sockaddr, SVt_PV);
2539 sv_grow (sockaddr, salen_);
2540 }
2541
2542 int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
2543
2544 retval = newmortalFH (res, O_RDWR);
2545
2546 if (res >= 0 && salen > 0)
2547 {
2548 if (salen_ > salen + 1)
2549 salen_ = salen + 1;
2550
2551 SvPOK_only (sockaddr);
2552 SvCUR_set (sockaddr, salen_);
2553 }
2554#else
2555 errno = ENOSYS;
2556 retval = &PL_sv_undef;
2557#endif
2558 XPUSHs (retval);
2559}
2560
2561ssize_t
2562splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2563 CODE:
2564{
2565#if HAVE_LINUX_SPLICE
2566 loff_t off_in_, off_out_;
2567 RETVAL = splice (
2568 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2569 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2570 length, flags
2571 );
2572#else
2573 RETVAL = EIO_ENOSYS ();
2574#endif
2575}
2576 OUTPUT:
2577 RETVAL
2578
2579ssize_t
2580tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2581 CODE:
2582#if HAVE_LINUX_SPLICE
2583 RETVAL = tee (rfh, wfh, length, flags);
2584#else
2585 RETVAL = EIO_ENOSYS ();
2586#endif
2587 OUTPUT:
2588 RETVAL
1682 2589
1683int 2590int
1684nreqs() 2591pipesize (aio_rfd rfh, int new_size = -1)
2592 PROTOTYPE: $;$
2593 CODE:
2594#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2595 if (new_size >= 0)
2596 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2597 else
2598 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2599#else
2600 errno = ENOSYS;
2601 RETVAL = -1;
2602#endif
2603 OUTPUT:
2604 RETVAL
2605
2606void
2607pipe2 (int flags = 0)
1685 PROTOTYPE: 2608 PROTOTYPE: ;$
2609 PPCODE:
2610{
2611 int fd[2];
2612 int res;
2613
2614 if (flags)
2615#if HAVE_PIPE2
2616 res = pipe2 (fd, flags);
2617#else
2618 res = (errno = ENOSYS, -1);
2619#endif
2620 else
2621 res = pipe (fd);
2622
2623 if (!res)
2624 {
2625 EXTEND (SP, 2);
2626 PUSHs (newmortalFH (fd[0], O_RDONLY));
2627 PUSHs (newmortalFH (fd[1], O_WRONLY));
2628 }
2629}
2630
2631void
2632pidfd_open (int pid, unsigned int flags = 0)
2633 PPCODE:
2634{
2635 /*GENDEF0_SYSCALL(pidfd_open,434)*/
2636 int fd = syscall (SYS_pidfd_open, pid, flags);
2637 XPUSHs (newmortalFH (fd, O_RDWR));
2638}
2639
2640int
2641pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
2642 PPCODE:
2643{
2644 int res;
2645 siginfo_t si = { 0 };
2646
2647 if (SvOK (siginfo))
2648 {
2649 HV *hv;
2650 SV **svp;
2651
2652 if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
2653 croak ("siginfo argument must be a hashref code, pid, uid and value_int or value_ptr members, caught");
2654
2655 hv = (HV *)SvRV (siginfo);
2656
2657 if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
2658 if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
2659 if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
2660 if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
2661 if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
2662 }
2663
2664 /*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
2665 res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
2666
2667 XPUSHs (sv_2mortal (newSViv (res)));
2668}
2669
2670void
2671pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
2672 PPCODE:
2673{
2674 /*GENDEF0_SYSCALL(pidfd_getfd,438)*/
2675 int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
2676 XPUSHs (newmortalFH (fd, O_RDWR));
2677}
2678
2679void
2680eventfd (unsigned int initval = 0, int flags = 0)
2681 PPCODE:
2682{
2683 int fd;
2684#if HAVE_EVENTFD
2685 fd = eventfd (initval, flags);
2686#else
2687 fd = (errno = ENOSYS, -1);
2688#endif
2689
2690 XPUSHs (newmortalFH (fd, O_RDWR));
2691}
2692
2693void
2694timerfd_create (int clockid, int flags = 0)
2695 PPCODE:
2696{
2697 int fd;
2698#if HAVE_TIMERFD
2699 fd = timerfd_create (clockid, flags);
2700#else
2701 fd = (errno = ENOSYS, -1);
2702#endif
2703
2704 XPUSHs (newmortalFH (fd, O_RDWR));
2705}
2706
2707void
2708timerfd_settime (SV *fh, int flags, NV interval, NV value)
2709 PPCODE:
2710{
2711 int fd = s_fileno_croak (fh, 0);
2712#if HAVE_TIMERFD
2713 int res;
2714 struct itimerspec its, ots;
2715
2716 ts_set (&its.it_interval, interval);
2717 ts_set (&its.it_value , value);
2718 res = timerfd_settime (fd, flags, &its, &ots);
2719
2720 if (!res)
2721 {
2722 EXTEND (SP, 2);
2723 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2724 PUSHs (newSVnv (ts_get (&ots.it_value)));
2725 }
2726#else
2727 errno = ENOSYS;
2728#endif
2729}
2730
2731void
2732timerfd_gettime (SV *fh)
2733 PPCODE:
2734{
2735 int fd = s_fileno_croak (fh, 0);
2736#if HAVE_TIMERFD
2737 int res;
2738 struct itimerspec ots;
2739 res = timerfd_gettime (fd, &ots);
2740
2741 if (!res)
2742 {
2743 EXTEND (SP, 2);
2744 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2745 PUSHs (newSVnv (ts_get (&ots.it_value)));
2746 }
2747#else
2748 errno = ENOSYS;
2749#endif
2750}
2751
2752void
2753memfd_create (SV8 *pathname, int flags = 0)
2754 PPCODE:
2755{
2756 int fd;
2757#if HAVE_MEMFD_CREATE
2758 fd = memfd_create (SvPVbyte_nolen (pathname), flags);
2759#else
2760 fd = (errno = ENOSYS, -1);
2761#endif
2762
2763 XPUSHs (newmortalFH (fd, O_RDWR));
2764}
2765
2766UV
2767get_fdlimit ()
1686 CODE: 2768 CODE:
1687 RETVAL = nreqs; 2769#if HAVE_RLIMITS
2770 struct rlimit rl;
2771 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2772 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2773#endif
2774 XSRETURN_UNDEF;
1688 OUTPUT: 2775 OUTPUT:
1689 RETVAL 2776 RETVAL
1690 2777
1691int 2778void
1692nready() 2779min_fdlimit (UV limit = 0x7fffffffU)
1693 PROTOTYPE:
1694 CODE: 2780 CODE:
1695 RETVAL = get_nready (); 2781{
1696 OUTPUT: 2782#if HAVE_RLIMITS
1697 RETVAL 2783 struct rlimit rl;
2784 rlim_t orig_rlim_max;
2785 UV bit;
1698 2786
1699int 2787 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
1700npending() 2788 goto fail;
1701 PROTOTYPE: 2789
2790 if (rl.rlim_cur == RLIM_INFINITY)
2791 XSRETURN_YES;
2792
2793 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2794
2795 if (rl.rlim_cur < limit)
2796 {
2797 rl.rlim_cur = limit;
2798
2799 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2800 rl.rlim_max = rl.rlim_cur;
2801 }
2802
2803 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2804 XSRETURN_YES;
2805
2806 if (errno == EPERM)
2807 {
2808 /* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2809 /* our limit overflows a system-wide limit */
2810 /* try an adaptive algorithm, but do not lower the hardlimit */
2811 rl.rlim_max = 0;
2812 for (bit = 0x40000000U; bit; bit >>= 1)
2813 {
2814 rl.rlim_max |= bit;
2815 rl.rlim_cur = rl.rlim_max;
2816
2817 /* never decrease the hard limit */
2818 if (rl.rlim_max < orig_rlim_max)
2819 break;
2820
2821 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2822 rl.rlim_max &= ~bit; /* too high, remove bit again */
2823 }
2824
2825 /* now, raise the soft limit to the max permitted */
2826 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2827 {
2828 rl.rlim_cur = rl.rlim_max;
2829 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2830 errno = EPERM;
2831 }
2832 }
2833#endif
2834 fail:
2835 XSRETURN_UNDEF;
2836}
2837
2838void _on_next_submit (SV *cb)
1702 CODE: 2839 CODE:
1703 RETVAL = get_npending (); 2840 SvREFCNT_dec (on_next_submit);
1704 OUTPUT: 2841 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1705 RETVAL
1706 2842
1707int 2843PROTOTYPES: DISABLE
1708nthreads() 2844
1709 PROTOTYPE: 2845MODULE = IO::AIO PACKAGE = IO::AIO::WD
2846
2847BOOT:
2848{
2849 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2850 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2851}
2852
2853void
2854DESTROY (SV *self)
1710 CODE: 2855 CODE:
1711 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2856{
1712 RETVAL = started; 2857 aio_wd wd = SvAIO_WD (self);
1713 if (WORDACCESS_UNSAFE) UNLOCK (wrklock); 2858#if HAVE_AT
1714 OUTPUT: 2859 {
1715 RETVAL 2860 SV *callback = &PL_sv_undef;
1716 2861 dREQ; /* clobbers next_pri :/ */
1717PROTOTYPES: DISABLE 2862 next_pri = req->pri; /* restore next_pri */
2863 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2864 req->type = EIO_WD_CLOSE;
2865 req->wd = wd;
2866 REQ_SEND;
2867 }
2868#else
2869 eio_wd_close_sync (wd);
2870#endif
2871}
1718 2872
1719MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2873MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720 2874
1721void 2875void
1722cancel (aio_req_ornot req) 2876cancel (aio_req_ornot req)
1723 CODE: 2877 CODE:
1724 req_cancel (req); 2878 eio_cancel (req);
1725 2879
1726void 2880void
1727cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2881cb (aio_req_ornot req, SV *callback = NO_INIT)
1728 CODE: 2882 PPCODE:
2883{
2884 if (GIMME_V != G_VOID)
2885 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2886
2887 if (items > 1)
2888 {
2889 SV *cb_cv = get_cb (callback);
2890
1729 SvREFCNT_dec (req->callback); 2891 SvREFCNT_dec (req->callback);
1730 req->callback = newSVsv (callback); 2892 req->callback = SvREFCNT_inc (cb_cv);
2893 }
2894}
1731 2895
1732MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2896MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733 2897
1734void 2898void
1735add (aio_req grp, ...) 2899add (aio_req grp, ...)
1736 PPCODE: 2900 PPCODE:
1737{ 2901{
1738 int i; 2902 int i;
1739 aio_req req;
1740 2903
1741 if (grp->int1 == 2) 2904 if (grp->int1 == 2)
1742 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2905 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743 2906
1744 for (i = 1; i < items; ++i ) 2907 for (i = 1; i < items; ++i )
1745 { 2908 {
2909 aio_req req;
2910
1746 if (GIMME_V != G_VOID) 2911 if (GIMME_V != G_VOID)
1747 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2912 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748 2913
1749 req = SvAIO_REQ (ST (i)); 2914 req = SvAIO_REQ (ST (i));
1750 2915
1751 if (req) 2916 if (req)
1752 { 2917 eio_grp_add (grp, req);
1753 ++grp->size;
1754 req->grp = grp;
1755
1756 req->grp_prev = 0;
1757 req->grp_next = grp->grp_first;
1758
1759 if (grp->grp_first)
1760 grp->grp_first->grp_prev = req;
1761
1762 grp->grp_first = req;
1763 }
1764 } 2918 }
1765} 2919}
1766 2920
1767void 2921void
1768cancel_subs (aio_req_ornot req) 2922cancel_subs (aio_req_ornot req)
… …
1777 AV *av; 2931 AV *av;
1778 2932
1779 grp->errorno = errno; 2933 grp->errorno = errno;
1780 2934
1781 av = newAV (); 2935 av = newAV ();
2936 av_extend (av, items - 1);
1782 2937
1783 for (i = 1; i < items; ++i ) 2938 for (i = 1; i < items; ++i )
1784 av_push (av, newSVsv (ST (i))); 2939 av_push (av, newSVsv (ST (i)));
1785 2940
1786 SvREFCNT_dec (grp->sv1); 2941 SvREFCNT_dec (grp->sv1);
… …
1793 grp->errorno = errorno; 2948 grp->errorno = errorno;
1794 2949
1795void 2950void
1796limit (aio_req grp, int limit) 2951limit (aio_req grp, int limit)
1797 CODE: 2952 CODE:
1798 grp->int2 = limit; 2953 eio_grp_limit (grp, limit);
1799 aio_grp_feed (grp);
1800 2954
1801void 2955void
1802feed (aio_req grp, SV *callback=&PL_sv_undef) 2956feed (aio_req grp, SV *callback = &PL_sv_undef)
1803 CODE: 2957 CODE:
1804{ 2958{
1805 SvREFCNT_dec (grp->sv2); 2959 SvREFCNT_dec (grp->sv2);
1806 grp->sv2 = newSVsv (callback); 2960 grp->sv2 = newSVsv (callback);
2961 grp->feed = aio_grp_feed;
1807 2962
1808 if (grp->int2 <= 0) 2963 if (grp->int2 <= 0)
1809 grp->int2 = 2; 2964 grp->int2 = 2;
1810 2965
1811 aio_grp_feed (grp); 2966 eio_grp_limit (grp, grp->int2);
1812} 2967}
1813 2968

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