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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC vs.
Revision 1.283 by root, Thu Sep 3 17:20:45 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>
22#include <stdlib.h> 15#include <stdlib.h>
23#include <errno.h> 16#include <errno.h>
24#include <sys/time.h>
25#include <sys/select.h>
26#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
27#include <sys/stat.h> 19#include <sys/stat.h>
28#include <limits.h> 20#include <limits.h>
29#include <unistd.h>
30#include <fcntl.h> 21#include <fcntl.h>
31#include <signal.h>
32#include <sched.h> 22#include <sched.h>
33 23
34#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
35# 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>
36# include <sys/sendfile.h> 88 #include <sys/select.h>
37# 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
38# 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
39# include <sys/uio.h> 123# include <sys/uio.h>
40# elif __hpux 124#endif
41# include <sys/socket.h> 125
42# 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
43# 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
44# else 207# else
45# error sendfile support requested but not available 208# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46# endif 209# endif
47#endif 210#endif
48 211
49/* number of seconds after which idle threads exit */ 212#ifndef makedev
50#define IDLE_TIMEOUT 10 213# define makedev(maj,min) (((maj) << 8) | (min))
51
52/* used for struct dirent, AIX doesn't provide it */
53#ifndef NAME_MAX
54# define NAME_MAX 4096
55#endif
56
57#ifndef PTHREAD_STACK_MIN
58/* care for broken platforms, e.g. windows */
59# define PTHREAD_STACK_MIN 16384
60#endif
61
62#if __ia64
63# define STACKSIZE 65536
64#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65# define STACKSIZE PTHREAD_STACK_MIN
66#else
67# define STACKSIZE 16384
68#endif
69
70/* wether word reads are potentially non-atomic.
71 * this is conservatice, likely most arches this runs
72 * on have atomic word read/writes.
73 */
74#ifndef WORDACCESS_UNSAFE
75# if __i386 || __x86_64
76# define WORDACCESS_UNSAFE 0
77# else
78# define WORDACCESS_UNSAFE 1
79# endif 214#endif
215#ifndef major
216# define major(dev) ((dev) >> 8)
80#endif 217#endif
218#ifndef minor
219# define minor(dev) ((dev) & 0xff)
220#endif
81 221
82/* buffer size for various temporary buffers */ 222/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
83#define AIO_BUFSIZE 65536 223#ifdef __sun
224# undef PAGESIZE
225#endif
84 226
85#define dBUF \ 227#if PAGESIZE <= 0
86 char *aio_buf; \ 228# define PAGESIZE sysconf (_SC_PAGESIZE)
87 LOCK (wrklock); \ 229#endif
88 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 230
89 UNLOCK (wrklock); \ 231/*****************************************************************************/
90 if (!aio_buf) \ 232
233#if !_POSIX_MAPPED_FILES
234# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
235# define munmap(addr,length) EIO_ENOSYS ()
236#endif
237
238#if !_POSIX_MEMORY_PROTECTION
239# define mprotect(addr,len,prot) EIO_ENOSYS ()
240#endif
241
242#if !MREMAP_MAYMOVE
243# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
244#endif
245
246#define FOREIGN_MAGIC PERL_MAGIC_ext
247
248static int ecb_cold
249mmap_free (pTHX_ SV *sv, MAGIC *mg)
250{
251 int old_errno = errno;
252 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
253 errno = old_errno;
254
255 mg->mg_obj = 0; /* just in case */
256
257 SvREADONLY_off (sv);
258
259 if (SvPVX (sv) != mg->mg_ptr)
260 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
261
262 SvCUR_set (sv, 0);
263 SvPVX (sv) = 0;
264 SvOK_off (sv);
265
91 return -1; 266 return 0;
267}
92 268
93typedef SV SV8; /* byte-sv, used for argument-checking */ 269static MGVTBL mmap_vtbl = {
94 270 0, 0, 0, 0, mmap_free
95enum {
96 REQ_QUIT,
97 REQ_OPEN, REQ_CLOSE,
98 REQ_READ, REQ_WRITE, REQ_READAHEAD,
99 REQ_SENDFILE,
100 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101 REQ_FSYNC, REQ_FDATASYNC,
102 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
103 REQ_MKNOD, REQ_READDIR,
104 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105 REQ_GROUP, REQ_NOP,
106 REQ_BUSY,
107}; 271};
108 272
109#define AIO_REQ_KLASS "IO::AIO::REQ" 273static int ecb_cold
110#define AIO_GRP_KLASS "IO::AIO::GRP" 274sysfree_free (pTHX_ SV *sv, MAGIC *mg)
111
112typedef struct aio_cb
113{ 275{
114 struct aio_cb *volatile next; 276 free (mg->mg_ptr);
277 mg->mg_obj = 0; /* just in case */
115 278
116 SV *callback, *fh; 279 SvREADONLY_off (sv);
117 SV *sv1, *sv2;
118 void *ptr1, *ptr2;
119 off_t offs;
120 size_t size;
121 ssize_t result;
122 280
123 STRLEN stroffset; 281 if (SvPVX (sv) != mg->mg_ptr)
124 int type; 282 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
125 int int1, int2;
126 int errorno;
127 mode_t mode; /* open */
128 283
129 unsigned char flags; 284 SvCUR_set (sv, 0);
130 unsigned char pri; 285 SvPVX (sv) = 0;
286 SvOK_off (sv);
131 287
132 SV *self; /* the perl counterpart of this request, if any */ 288 return 0;
133 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 289}
134} aio_cb;
135 290
136enum { 291static MGVTBL sysfree_vtbl = {
137 FLAG_CANCELLED = 0x01, /* request was cancelled */ 292 0, 0, 0, 0, sysfree_free
138 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140}; 293};
141 294
142typedef aio_cb *aio_req; 295/*****************************************************************************/
143typedef aio_cb *aio_req_ornot;
144 296
145enum { 297/* helper: set scalar to foreign ptr with custom free */
146 PRI_MIN = -4, 298ecb_noinline
147 PRI_MAX = 4, 299static void
148 300sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
149 DEFAULT_PRI = 0,
150 PRI_BIAS = -PRI_MIN,
151 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152};
153
154#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156static unsigned int max_poll_time = 0;
157static unsigned int max_poll_reqs = 0;
158
159/* calculcate time difference in ~1/AIO_TICKS of a second */
160static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161{ 301{
162 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 302 sv_force_normal (sv);
163 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
164}
165 303
166static pthread_t main_tid; 304 /* we store the length in mg_obj, as namlen is I32 :/ */
167static int main_sig; 305 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
168static int block_sig_level; 306 ->mg_obj = (SV *)length;
169 307
170void block_sig () 308 SvUPGRADE (sv, SVt_PV); /* nop... */
171{
172 sigset_t ss;
173 309
174 if (block_sig_level++) 310 if (SvLEN (sv))
311 Safefree (SvPVX (sv));
312
313 SvPVX (sv) = (char *)addr;
314 SvCUR_set (sv, length);
315 SvLEN_set (sv, 0);
316 SvPOK_only (sv);
317}
318
319static void
320sv_clear_foreign (SV *sv)
321{
322 /* todo: iterate over magic and only free ours, but of course */
323 /* the perl5porters will call that (correct) behaviour buggy */
324 sv_unmagic (sv, FOREIGN_MAGIC);
325}
326
327/*****************************************************************************/
328
329/* defines all sorts of constants to 0 unless they are already defined */
330/* also provides const_iv_ and const_niv_ macros for them */
331#include "def0.h"
332
333/*****************************************************************************/
334
335static void
336fiemap (eio_req *req)
337{
338 req->result = -1;
339
340#if HAVE_FIEMAP
341 /* assume some c99 */
342 struct fiemap *fiemap = 0;
343 size_t end_offset;
344 int count = req->int3;
345
346 req->flags |= EIO_FLAG_PTR1_FREE;
347
348 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
349 /* increase in fixed steps */
350 if (count < 0)
351 count = 8;
352
353 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
354 errno = ENOMEM;
355 if (!fiemap)
175 return; 356 return;
176 357
177 if (!main_sig) 358 req->ptr1 = fiemap;
359
360 fiemap->fm_start = req->offs;
361 fiemap->fm_length = req->size;
362 fiemap->fm_flags = req->int2;
363 fiemap->fm_extent_count = count;
364
365 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
178 return; 366 return;
179 367
180 sigemptyset (&ss); 368 if (req->int3 >= 0 /* not autosizing */
181 sigaddset (&ss, main_sig); 369 || !fiemap->fm_mapped_extents /* no more extents */
182 pthread_sigmask (SIG_BLOCK, &ss, 0); 370 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
183} 371 goto done;
184 372
185void unblock_sig () 373 /* else we have to loop -
186{ 374 * it would be tempting (actually I tried that first) to just query the
187 sigset_t ss; 375 * number of extents needed, but linux often feels like not returning all
376 * extents, without telling us it left any out. this complicates
377 * this quite a bit.
378 */
188 379
189 if (--block_sig_level) 380 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
190 return;
191 381
192 if (!main_sig) 382 for (;;)
193 return;
194
195 sigemptyset (&ss);
196 sigaddset (&ss, main_sig);
197 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198}
199
200static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202static unsigned int started, idle, wanted;
203
204#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206#else
207# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208#endif
209
210#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213/* worker threads management */
214static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216typedef struct worker {
217 /* locked by wrklock */
218 struct worker *prev, *next;
219
220 pthread_t tid;
221
222 /* locked by reslock, reqlock or wrklock */
223 aio_req req; /* currently processed request */
224 void *dbuf;
225 DIR *dirp;
226} worker;
227
228static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230static void worker_clear (worker *wrk)
231{
232 if (wrk->dirp)
233 { 383 {
234 closedir (wrk->dirp); 384 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
235 wrk->dirp = 0; 385 char scratch[3072];
236 } 386 struct fiemap *incmap = (struct fiemap *)scratch;
237 387
238 if (wrk->dbuf) 388 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
239 { 389 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
240 free (wrk->dbuf); 390 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
241 wrk->dbuf = 0; 391 incmap->fm_flags = fiemap->fm_flags;
242 } 392 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
243}
244 393
245static void worker_free (worker *wrk) 394 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
246{
247 wrk->next->prev = wrk->prev;
248 wrk->prev->next = wrk->next;
249
250 free (wrk);
251}
252
253static volatile unsigned int nreqs, nready, npending;
254static volatile unsigned int max_idle = 4;
255static volatile unsigned int max_outstanding = 0xffffffff;
256static int respipe [2];
257
258static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262#if WORDACCESS_UNSAFE
263
264static unsigned int get_nready ()
265{
266 unsigned int retval;
267
268 LOCK (reqlock);
269 retval = nready;
270 UNLOCK (reqlock);
271
272 return retval;
273}
274
275static unsigned int get_npending ()
276{
277 unsigned int retval;
278
279 LOCK (reslock);
280 retval = npending;
281 UNLOCK (reslock);
282
283 return retval;
284}
285
286static unsigned int get_nthreads ()
287{
288 unsigned int retval;
289
290 LOCK (wrklock);
291 retval = started;
292 UNLOCK (wrklock);
293
294 return retval;
295}
296
297#else
298
299# define get_nready() nready
300# define get_npending() npending
301# define get_nthreads() started
302
303#endif
304
305/*
306 * a somewhat faster data structure might be nice, but
307 * with 8 priorities this actually needs <20 insns
308 * per shift, the most expensive operation.
309 */
310typedef struct {
311 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312 int size;
313} reqq;
314
315static reqq req_queue;
316static reqq res_queue;
317
318int reqq_push (reqq *q, aio_req req)
319{
320 int pri = req->pri;
321 req->next = 0;
322
323 if (q->qe[pri])
324 {
325 q->qe[pri]->next = req;
326 q->qe[pri] = req;
327 }
328 else
329 q->qe[pri] = q->qs[pri] = req;
330
331 return q->size++;
332}
333
334aio_req reqq_shift (reqq *q)
335{
336 int pri;
337
338 if (!q->size)
339 return 0; 395 return;
340 396
341 --q->size; 397 if (!incmap->fm_mapped_extents)
398 goto done;
342 399
343 for (pri = NUM_PRI; pri--; ) 400 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
344 { 401 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
345 aio_req req = q->qs[pri]; 402 errno = ENOMEM;
346
347 if (req) 403 if (!fiemap)
404 return;
405
406 req->ptr1 = fiemap;
407
408 for (count = 0; count < incmap->fm_mapped_extents; ++count)
348 { 409 {
349 if (!(q->qs[pri] = req->next)) 410 struct fiemap_extent *e = incmap->fm_extents + count;
350 q->qe[pri] = 0;
351 411
352 return req; 412 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
413
414 if (e->fe_logical + e->fe_length >= end_offset)
415 goto done;
416
417 if (e->fe_flags & FIEMAP_EXTENT_LAST)
418 goto done;
419
353 } 420 }
354 } 421 }
355 422
356 abort (); 423done:
357} 424 req->result = 0;
358 425
359static int poll_cb (); 426#else
360static int req_invoke (aio_req req); 427 errno = ENOSYS;
428#endif
429}
430
431/*****************************************************************************/
432
433static int close_fd; /* dummy fd to close fds via dup2 */
434
435#if HAVE_STATX
436static struct statx stx;
437#define statx_offsetof(member) offsetof (struct statx, member)
438#define eio__statx statx
439#else
440#define statx_offsetof(member) 0
441#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
442#endif
443
444enum {
445 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
446};
447
448typedef eio_req *aio_req;
449typedef eio_req *aio_req_ornot;
450typedef eio_wd aio_wd;
451
452static SV *on_next_submit;
453static int next_pri = EIO_PRI_DEFAULT;
454static int max_outstanding;
455
456static s_epipe respipe;
457
361static void req_free (aio_req req); 458static void req_destroy (aio_req req);
362static void req_cancel (aio_req req); 459static void req_cancel (aio_req req);
363 460
461static void
462want_poll (void)
463{
464 /* write a dummy byte to the pipe so fh becomes ready */
465 s_epipe_signal (&respipe);
466}
467
468static void
469done_poll (void)
470{
471 /* read any signals sent by the worker threads */
472 s_epipe_drain (&respipe);
473}
474
364/* must be called at most once */ 475/* must be called at most once */
365static SV *req_sv (aio_req req, const char *klass) 476ecb_noinline
477static SV *
478req_sv (aio_req req, HV *stash)
366{ 479{
367 if (!req->self) 480 if (!req->self)
368 { 481 {
369 req->self = (SV *)newHV (); 482 req->self = (SV *)newHV ();
370 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 483 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371 } 484 }
372 485
373 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 486 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374} 487}
375 488
376static aio_req SvAIO_REQ (SV *sv) 489static SV *
490newSVaio_wd (aio_wd wd)
491{
492 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
493}
494
495ecb_noinline
496static aio_req
497SvAIO_REQ (SV *sv)
377{ 498{
378 MAGIC *mg; 499 MAGIC *mg;
379 500
380 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 501 if (!SvROK (sv)
502 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
503 || (SvSTASH (SvRV (sv)) != aio_grp_stash
504 && SvSTASH (SvRV (sv)) != aio_req_stash
505 && !sv_derived_from (sv, "IO::AIO::REQ")))
381 croak ("object of class " AIO_REQ_KLASS " expected"); 506 croak ("object of class IO::AIO::REQ expected");
382 507
383 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 508 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384 509
385 return mg ? (aio_req)mg->mg_ptr : 0; 510 return mg ? (aio_req)mg->mg_ptr : 0;
386} 511}
387 512
513static aio_wd
514SvAIO_WD (SV *sv)
515{
516 if (!SvROK (sv)
517 || SvTYPE (SvRV (sv)) != SVt_PVMG
518 || SvSTASH (SvRV (sv)) != aio_wd_stash)
519 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
520
521 return (aio_wd)(long)SvIVX (SvRV (sv));
522}
523
524static SV *
525newmortalFH (int fd, int flags)
526{
527 if (fd < 0)
528 return &PL_sv_undef;
529
530 GV *gv = (GV *)sv_newmortal ();
531 char sym[64];
532 int symlen;
533
534 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
535 gv_init (gv, aio_stash, sym, symlen, 0);
536
537 symlen = snprintf (
538 sym,
539 sizeof (sym),
540 "%s&=%d",
541 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
542 fd
543 );
544
545 return do_open (gv, sym, symlen, 0, 0, 0, 0)
546 ? (SV *)gv : &PL_sv_undef;
547}
548
549static void
388static void aio_grp_feed (aio_req grp) 550aio_grp_feed (aio_req grp)
389{ 551{
390 block_sig (); 552 if (grp->sv2 && SvOK (grp->sv2))
391
392 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393 { 553 {
394 int old_len = grp->size;
395
396 if (grp->sv2 && SvOK (grp->sv2))
397 {
398 dSP; 554 dSP;
399 555
400 ENTER; 556 ENTER;
401 SAVETMPS; 557 SAVETMPS;
402 PUSHMARK (SP); 558 PUSHMARK (SP);
403 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 559 XPUSHs (req_sv (grp, aio_grp_stash));
404 PUTBACK; 560 PUTBACK;
405 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 561 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406 SPAGAIN; 562 SPAGAIN;
407 FREETMPS; 563 FREETMPS;
408 LEAVE; 564 LEAVE;
409 }
410
411 /* stop if no progress has been made */
412 if (old_len == grp->size)
413 {
414 SvREFCNT_dec (grp->sv2);
415 grp->sv2 = 0;
416 break;
417 }
418 } 565 }
419
420 unblock_sig ();
421} 566}
422 567
423static void aio_grp_dec (aio_req grp) 568ecb_noinline
569static void
570req_submit (eio_req *req)
424{ 571{
425 --grp->size; 572 eio_submit (req);
426 573
427 /* call feeder, if applicable */ 574 if (expect_false (on_next_submit))
428 aio_grp_feed (grp);
429
430 /* finish, if done */
431 if (!grp->size && grp->int1)
432 { 575 {
433 block_sig (); 576 dSP;
577 SV *cb = sv_2mortal (on_next_submit);
434 578
435 if (!req_invoke (grp)) 579 on_next_submit = 0;
436 {
437 req_free (grp);
438 unblock_sig ();
439 croak (0);
440 }
441 580
442 req_free (grp); 581 PUSHMARK (SP);
443 unblock_sig (); 582 PUTBACK;
583 call_sv (cb, G_DISCARD | G_EVAL);
444 } 584 }
445} 585}
446 586
587static int
447static int req_invoke (aio_req req) 588req_invoke (eio_req *req)
448{ 589{
449 dSP;
450
451 if (req->flags & FLAG_SV1_RO_OFF) 590 if (req->flags & FLAG_SV2_RO_OFF)
452 SvREADONLY_off (req->sv1); 591 SvREADONLY_off (req->sv2);
453 592
454 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 593 if (!EIO_CANCELLED (req) && req->callback)
455 { 594 {
595 dSP;
596 static SV *sv_result_cache; /* caches the result integer SV */
597 SV *sv_result;
598
456 ENTER; 599 ENTER;
457 SAVETMPS; 600 SAVETMPS;
458 PUSHMARK (SP); 601 PUSHMARK (SP);
459 EXTEND (SP, 1); 602 EXTEND (SP, 1);
460 603
604 /* do not recreate the result IV from scratch each time */
605 if (expect_true (sv_result_cache))
606 {
607 sv_result = sv_result_cache; sv_result_cache = 0;
608 SvIV_set (sv_result, req->result);
609 SvIOK_only (sv_result);
610 }
611 else
612 {
613 sv_result = newSViv (req->result);
614 SvREADONLY_on (sv_result);
615 }
616
461 switch (req->type) 617 switch (req->type)
462 { 618 {
619 case EIO_WD_OPEN:
620 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
621 break;
622
463 case REQ_READDIR: 623 case EIO_READDIR:
464 { 624 {
465 SV *rv = &PL_sv_undef; 625 SV *rv = &PL_sv_undef;
466 626
467 if (req->result >= 0) 627 if (req->result >= 0)
468 { 628 {
469 int i; 629 int i;
470 char *buf = req->ptr2; 630 char *names = (char *)req->ptr2;
631 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471 AV *av = newAV (); 632 AV *av = newAV ();
472 633
473 av_extend (av, req->result - 1); 634 av_extend (av, req->result - 1);
474 635
475 for (i = 0; i < req->result; ++i) 636 for (i = 0; i < req->result; ++i)
476 { 637 {
477 SV *sv = newSVpv (buf, 0); 638 if (req->int1 & EIO_READDIR_DENTS)
639 {
640 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478 641
642 if (req->int1 & EIO_READDIR_CUSTOM2)
643 {
644 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
645 AV *avent = newAV ();
646
647 av_extend (avent, 2);
648
649 if (!sv_type [ent->type])
650 {
651 sv_type [ent->type] = newSViv (ent->type);
652 SvREADONLY_on (sv_type [ent->type]);
653 }
654
655 av_store (avent, 0, namesv);
656 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
657 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
658
659 av_store (av, i, newRV_noinc ((SV *)avent));
660 }
661 else
479 av_store (av, i, sv); 662 av_store (av, i, namesv);
663
664 ++ent;
665 }
666 else
667 {
668 SV *name = newSVpv (names, 0);
669 av_store (av, i, name);
480 buf += SvCUR (sv) + 1; 670 names += SvCUR (name) + 1;
671 }
481 } 672 }
482 673
483 rv = sv_2mortal (newRV_noinc ((SV *)av)); 674 rv = sv_2mortal (newRV_noinc ((SV *)av));
484 } 675 }
485 676
486 PUSHs (rv); 677 PUSHs (rv);
678
679 if (req->int1 & EIO_READDIR_CUSTOM1)
680 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487 } 681 }
488 break; 682 break;
489 683
490 case REQ_OPEN: 684 case EIO_OPEN:
685 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
686 break;
687
688 case EIO_STATVFS:
689 case EIO_FSTATVFS:
491 { 690 {
492 /* convert fd to fh */ 691 SV *rv = &PL_sv_undef;
493 SV *fh; 692
693#ifndef _WIN32
694 if (req->result >= 0)
695 {
696 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
697 HV *hv = newHV ();
698 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
699 * chooses to make it a struct.
700 */
701 unsigned long fsid = 0;
702 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
494 703
495 PUSHs (sv_2mortal (newSViv (req->result))); 704 rv = sv_2mortal (newRV_noinc ((SV *)hv));
496 PUTBACK;
497 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
498 SPAGAIN;
499 705
500 fh = POPs; 706 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
501 PUSHMARK (SP); 707 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
708 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
709 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
710 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
711 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
712 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
713 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
714 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
715 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
716 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
717 }
718#endif
719
502 XPUSHs (fh); 720 PUSHs (rv);
503 } 721 }
722
504 break; 723 break;
505 724
506 case REQ_GROUP: 725 case EIO_GROUP:
507 req->int1 = 2; /* mark group as finished */ 726 req->int1 = 2; /* mark group as finished */
508 727
509 if (req->sv1) 728 if (req->sv1)
510 { 729 {
511 int i; 730 int i;
… …
515 for (i = 0; i <= AvFILL (av); ++i) 734 for (i = 0; i <= AvFILL (av); ++i)
516 PUSHs (*av_fetch (av, i, 0)); 735 PUSHs (*av_fetch (av, i, 0));
517 } 736 }
518 break; 737 break;
519 738
520 case REQ_NOP: 739 case EIO_NOP:
521 case REQ_BUSY: 740 case EIO_BUSY:
522 break; 741 break;
523 742
524 case REQ_READLINK: 743 case EIO_READLINK:
744 case EIO_REALPATH:
525 if (req->result > 0) 745 if (req->result > 0)
746 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
747 break;
748
749 case EIO_STAT:
750 case EIO_LSTAT:
751 case EIO_FSTAT:
752 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
753
754 if (!(PL_laststatval = req->result))
755 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
756 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
757
758 PUSHs (sv_result);
759 break;
760
761 case EIO_SEEK:
762 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
763 break;
764
765 case EIO_READ:
766 {
767 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
768 *SvEND (req->sv2) = 0;
769 SvPOK_only (req->sv2);
770 SvSETMAGIC (req->sv2);
771 PUSHs (sv_result);
772 }
773 break;
774
775 case EIO_SLURP:
776 {
777 if (req->result >= 0)
778 {
779 /* if length was originally not known, we steal the malloc'ed memory */
780 if (req->flags & EIO_FLAG_PTR2_FREE)
781 {
782 req->flags &= ~EIO_FLAG_PTR2_FREE;
783 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
784 }
785 else
786 {
787 SvCUR_set (req->sv2, req->result);
788 *SvEND (req->sv2) = 0;
789 SvPOK_only (req->sv2);
790 }
791
792 SvSETMAGIC (req->sv2);
793 }
794
795 PUSHs (sv_result);
796 }
797 break;
798
799 case EIO_CUSTOM:
800 if (req->feed == fiemap)
526 { 801 {
527 SvCUR_set (req->sv1, req->result); 802#if HAVE_FIEMAP
528 *SvEND (req->sv1) = 0;
529 PUSHs (req->sv1); 803 if (!req->result)
804 {
805 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
806
807 if (fiemap->fm_extent_count)
808 {
809 AV *av = newAV ();
810 int i;
811
812 while (fiemap->fm_mapped_extents)
813 {
814 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
815 AV *ext_av = newAV ();
816
817 av_store (ext_av, 3, newSVuv (extent->fe_flags));
818 av_store (ext_av, 2, newSVval64 (extent->fe_length));
819 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
820 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
821
822 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
823 }
824
825 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
826 }
827 else
828 {
829 SvIV_set (sv_result, fiemap->fm_mapped_extents);
830 PUSHs (sv_result);
831 }
832 }
833#endif
530 } 834 }
835 else
836 PUSHs (sv_result);
531 break; 837 break;
532 838
533 case REQ_STAT: 839#if 0
534 case REQ_LSTAT: 840 case EIO_CLOSE:
535 case REQ_FSTAT: 841 PerlIOUnix_refcnt_dec (req->int1);
536 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
537 PL_laststatval = req->result;
538 PL_statcache = *(Stat_t *)(req->ptr2);
539 PUSHs (sv_2mortal (newSViv (req->result)));
540 break; 842 break;
843#endif
541 844
542 case REQ_READ: 845 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
543 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 846 if (req->result > 0)
544 *SvEND (req->sv1) = 0; 847 SvIV_set (sv_result, 0);
545 PUSHs (sv_2mortal (newSViv (req->result))); 848 /* FALLTHROUGH */
546 break;
547 849
548 default: 850 default:
549 PUSHs (sv_2mortal (newSViv (req->result))); 851 PUSHs (sv_result);
550 break; 852 break;
551 } 853 }
552 854
553 errno = req->errorno; 855 errno = req->errorno;
554 856
555 PUTBACK; 857 PUTBACK;
556 call_sv (req->callback, G_VOID | G_EVAL); 858 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557 SPAGAIN; 859 SPAGAIN;
860
861 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
862 SvREFCNT_dec (sv_result);
863 else
864 sv_result_cache = sv_result;
558 865
559 FREETMPS; 866 FREETMPS;
560 LEAVE; 867 LEAVE;
868
869 PUTBACK;
561 } 870 }
562 871
563 if (req->grp)
564 {
565 aio_req grp = req->grp;
566
567 /* unlink request */
568 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571 if (grp->grp_first == req)
572 grp->grp_first = req->grp_next;
573
574 aio_grp_dec (grp);
575 }
576
577 return !SvTRUE (ERRSV); 872 return !!SvTRUE (ERRSV);
578} 873}
579 874
580static void req_free (aio_req req) 875static void
876req_destroy (aio_req req)
581{ 877{
582 if (req->self) 878 if (req->self)
583 { 879 {
584 sv_unmagic (req->self, PERL_MAGIC_ext); 880 sv_unmagic (req->self, PERL_MAGIC_ext);
585 SvREFCNT_dec (req->self); 881 SvREFCNT_dec (req->self);
586 } 882 }
587 883
588 SvREFCNT_dec (req->fh);
589 SvREFCNT_dec (req->sv1); 884 SvREFCNT_dec (req->sv1);
590 SvREFCNT_dec (req->sv2); 885 SvREFCNT_dec (req->sv2);
886 SvREFCNT_dec (req->sv3);
887 SvREFCNT_dec (req->sv4);
591 SvREFCNT_dec (req->callback); 888 SvREFCNT_dec (req->callback);
592 889
593 if (req->flags & FLAG_PTR2_FREE)
594 free (req->ptr2);
595
596 Safefree (req); 890 free (req);
597} 891}
598 892
893static void
599static void req_cancel_subs (aio_req grp) 894req_cancel_subs (aio_req grp)
600{ 895{
601 aio_req sub;
602
603 if (grp->type != REQ_GROUP) 896 if (grp->type != EIO_GROUP)
604 return; 897 return;
605 898
606 SvREFCNT_dec (grp->sv2); 899 SvREFCNT_dec (grp->sv2);
607 grp->sv2 = 0; 900 grp->sv2 = 0;
608 901
609 for (sub = grp->grp_first; sub; sub = sub->grp_next) 902 eio_grp_cancel (grp);
610 req_cancel (sub);
611} 903}
612 904
613static void req_cancel (aio_req req) 905ecb_cold
906static void
907create_respipe (void)
614{ 908{
615 req->flags |= FLAG_CANCELLED; 909 if (s_epipe_renew (&respipe))
616 910 croak ("IO::AIO: unable to initialize result pipe");
617 req_cancel_subs (req);
618} 911}
619 912
620static void *aio_proc(void *arg); 913static void
621 914poll_wait (void)
622static void start_thread (void)
623{ 915{
624 sigset_t fullsigset, oldsigset;
625 pthread_attr_t attr;
626
627 worker *wrk = calloc (1, sizeof (worker));
628
629 if (!wrk)
630 croak ("unable to allocate worker thread data");
631
632 pthread_attr_init (&attr);
633 pthread_attr_setstacksize (&attr, STACKSIZE);
634 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635#ifdef PTHREAD_SCOPE_PROCESS
636 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637#endif
638
639 sigfillset (&fullsigset);
640
641 LOCK (wrklock);
642 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645 {
646 wrk->prev = &wrk_first;
647 wrk->next = wrk_first.next;
648 wrk_first.next->prev = wrk;
649 wrk_first.next = wrk;
650 ++started;
651 }
652 else
653 free (wrk);
654
655 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656 UNLOCK (wrklock);
657}
658
659static void maybe_start_thread ()
660{
661 if (get_nthreads () >= wanted)
662 return;
663
664 /* todo: maybe use idle here, but might be less exact */
665 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666 return;
667
668 start_thread ();
669}
670
671static void req_send (aio_req req)
672{
673 block_sig ();
674
675 ++nreqs;
676
677 LOCK (reqlock);
678 ++nready;
679 reqq_push (&req_queue, req);
680 pthread_cond_signal (&reqwait);
681 UNLOCK (reqlock);
682
683 unblock_sig ();
684
685 maybe_start_thread ();
686}
687
688static void end_thread (void)
689{
690 aio_req req;
691
692 Newz (0, req, 1, aio_cb);
693
694 req->type = REQ_QUIT;
695 req->pri = PRI_MAX + PRI_BIAS;
696
697 LOCK (reqlock);
698 reqq_push (&req_queue, req);
699 pthread_cond_signal (&reqwait);
700 UNLOCK (reqlock);
701
702 LOCK (wrklock);
703 --started;
704 UNLOCK (wrklock);
705}
706
707static void set_max_idle (int nthreads)
708{
709 if (WORDACCESS_UNSAFE) LOCK (reqlock);
710 max_idle = nthreads <= 0 ? 1 : nthreads;
711 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712}
713
714static void min_parallel (int nthreads)
715{
716 if (wanted < nthreads)
717 wanted = nthreads;
718}
719
720static void max_parallel (int nthreads)
721{
722 if (wanted > nthreads)
723 wanted = nthreads;
724
725 while (started > wanted)
726 end_thread ();
727}
728
729static void poll_wait ()
730{
731 fd_set rfd;
732
733 while (nreqs) 916 while (eio_nreqs ())
734 { 917 {
735 int size; 918 int size;
736 if (WORDACCESS_UNSAFE) LOCK (reslock); 919
920 X_LOCK (EIO_POOL->reslock);
737 size = res_queue.size; 921 size = EIO_POOL->res_queue.size;
738 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 922 X_UNLOCK (EIO_POOL->reslock);
739 923
740 if (size) 924 if (size)
741 return; 925 return;
742 926
743 maybe_start_thread (); 927 etp_maybe_start_thread (EIO_POOL);
744 928
745 FD_ZERO(&rfd); 929 s_epipe_wait (&respipe);
746 FD_SET(respipe [0], &rfd);
747
748 select (respipe [0] + 1, &rfd, 0, 0, 0);
749 } 930 }
750} 931}
751 932
752static int poll_cb () 933static int
934poll_cb (void)
753{ 935{
754 dSP;
755 int count = 0;
756 int maxreqs = max_poll_reqs;
757 int do_croak = 0;
758 struct timeval tv_start, tv_now;
759 aio_req req;
760
761 if (max_poll_time)
762 gettimeofday (&tv_start, 0);
763
764 block_sig ();
765
766 for (;;) 936 for (;;)
767 { 937 {
768 for (;;) 938 int res = eio_poll ();
939
940 if (res > 0)
941 croak (0);
942
943 if (!max_outstanding || max_outstanding > eio_nreqs ())
944 return res;
945
946 poll_wait ();
947 }
948}
949
950ecb_cold
951static void
952reinit (void)
953{
954 create_respipe ();
955
956 if (eio_init (want_poll, done_poll) < 0)
957 croak ("IO::AIO: unable to initialise eio library");
958}
959
960/*****************************************************************************/
961
962static SV *
963get_cb (SV *cb_sv)
964{
965 SvGETMAGIC (cb_sv);
966 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
967}
968
969ecb_noinline
970static aio_req ecb_noinline
971dreq (SV *callback)
972{
973 SV *cb_cv;
974 aio_req req;
975 int req_pri = next_pri;
976 next_pri = EIO_PRI_DEFAULT;
977
978 cb_cv = get_cb (callback);
979
980 req = calloc (sizeof (*req), 1);
981 if (!req)
982 croak ("out of memory during eio_req allocation");
983
984 req->callback = SvREFCNT_inc (cb_cv);
985 req->pri = req_pri;
986
987 return req;
988}
989
990#define dREQ \
991 aio_req req = dreq (callback); \
992
993#define REQ_SEND \
994 PUTBACK; \
995 req_submit (req); \
996 SPAGAIN; \
997 \
998 if (GIMME_V != G_VOID) \
999 XPUSHs (req_sv (req, aio_req_stash));
1000
1001/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
1002ecb_inline
1003void
1004req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
1005{
1006 if (expect_false (SvROK (path)))
1007 {
1008 SV *rv = SvRV (path);
1009 SV *wdob;
1010
1011 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
769 { 1012 {
770 maybe_start_thread (); 1013 path = AvARRAY (rv)[1];
1014 wdob = AvARRAY (rv)[0];
771 1015
772 LOCK (reslock); 1016 if (SvOK (wdob))
773 req = reqq_shift (&res_queue);
774
775 if (req)
776 { 1017 {
777 --npending; 1018 *wd = SvAIO_WD (wdob);
778 1019 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
779 if (!res_queue.size)
780 {
781 /* read any signals sent by the worker threads */
782 char buf [4];
783 while (read (respipe [0], buf, 4) == 4)
784 ;
785 }
786 }
787
788 UNLOCK (reslock);
789
790 if (!req)
791 break;
792
793 --nreqs;
794
795 if (req->type == REQ_GROUP && req->size)
796 {
797 req->int1 = 1; /* mark request as delayed */
798 continue;
799 } 1020 }
800 else 1021 else
801 { 1022 *wd = EIO_INVALID_WD;
802 if (!req_invoke (req))
803 {
804 req_free (req);
805 unblock_sig ();
806 croak (0);
807 }
808
809 count++;
810 }
811
812 req_free (req);
813
814 if (maxreqs && !--maxreqs)
815 break;
816
817 if (max_poll_time)
818 {
819 gettimeofday (&tv_now, 0);
820
821 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822 break;
823 }
824 } 1023 }
1024 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1025 {
1026 *wd = (aio_wd)(long)SvIVX (rv);
1027 *wdsv = SvREFCNT_inc_NN (rv);
1028 *ptr = ".";
1029 return; /* path set to "." */
1030 }
1031 else
1032 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1033 }
825 1034
826 if (nreqs <= max_outstanding) 1035 *pathsv = newSVsv (path);
1036 *ptr = SvPVbyte_nolen (*pathsv);
1037}
1038
1039ecb_noinline
1040static void
1041req_set_path1 (aio_req req, SV *path)
1042{
1043 req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1044}
1045
1046ecb_noinline
1047static void
1048req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1049{
1050 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1051
1052 switch (SvTYPE (rv))
1053 {
1054 case SVt_PVIO:
1055 case SVt_PVLV:
1056 case SVt_PVGV:
1057 req->type = type_fh;
1058 req->sv1 = newSVsv (fh_or_path);
1059 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
827 break; 1060 break;
828 1061
829 poll_wait (); 1062 default:
830 1063 req->type = type_path;
831 ++maxreqs; 1064 req_set_path1 (req, fh_or_path);
1065 break;
832 } 1066 }
833
834 unblock_sig ();
835 return count;
836}
837
838static void create_pipe ()
839{
840 if (pipe (respipe))
841 croak ("unable to initialize result pipe");
842
843 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844 croak ("cannot set result pipe to nonblocking mode");
845
846 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847 croak ("cannot set result pipe to nonblocking mode");
848} 1067}
849 1068
850/*****************************************************************************/ 1069/*****************************************************************************/
851/* work around various missing functions */
852 1070
853#if !HAVE_PREADWRITE 1071static void
854# define pread aio_pread 1072ts_set (struct timespec *ts, NV value)
855# define pwrite aio_pwrite
856
857/*
858 * make our pread/pwrite safe against themselves, but not against
859 * normal read/write by using a mutex. slows down execution a lot,
860 * but that's your problem, not mine.
861 */
862static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865{ 1073{
866 ssize_t res; 1074 ts->tv_sec = value;
867 off_t ooffset; 1075 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
868
869 LOCK (preadwritelock);
870 ooffset = lseek (fd, 0, SEEK_CUR);
871 lseek (fd, offset, SEEK_SET);
872 res = read (fd, buf, count);
873 lseek (fd, ooffset, SEEK_SET);
874 UNLOCK (preadwritelock);
875
876 return res;
877} 1076}
878 1077
879static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1078static NV
1079ts_get (const struct timespec *ts)
880{ 1080{
881 ssize_t res; 1081 return ts->tv_sec + ts->tv_nsec * 1e-9;
882 off_t ooffset;
883
884 LOCK (preadwritelock);
885 ooffset = lseek (fd, 0, SEEK_CUR);
886 lseek (fd, offset, SEEK_SET);
887 res = write (fd, buf, count);
888 lseek (fd, offset, SEEK_SET);
889 UNLOCK (preadwritelock);
890
891 return res;
892} 1082}
893#endif
894 1083
895#if !HAVE_FDATASYNC 1084/*****************************************************************************/
896# define fdatasync fsync
897#endif
898 1085
899#if !HAVE_READAHEAD 1086XS(boot_IO__AIO) ecb_cold;
900# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901 1087
902static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1088MODULE = IO::AIO PACKAGE = IO::AIO
903{
904 dBUF;
905 1089
906 while (count > 0) 1090PROTOTYPES: ENABLE
907 {
908 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909 1091
910 pread (fd, aio_buf, len, offset); 1092BOOT:
911 offset += len;
912 count -= len;
913 }
914
915 errno = 0;
916}
917
918#endif
919
920#if !HAVE_READDIR_R
921# define readdir_r aio_readdir_r
922
923static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926{ 1093{
927 struct dirent *e; 1094 static const struct {
928 int errorno; 1095 const char *name;
1096 IV iv;
1097 } *civ, const_iv[] = {
1098# define const_niv(name, value) { # name, (IV) value },
1099# define const_iv(name) { # name, (IV) name },
1100# define const_eio(name) { # name, (IV) EIO_ ## name },
929 1101
930 LOCK (readdirlock); 1102 /* you have to re-run ./gendef0 after adding/removing any constants here */
1103 /* the first block can be undef if missing */
1104 const_iv (ENOSYS)
1105 const_iv (EXDEV)
1106 const_iv (EBADR)
931 1107
932 e = readdir (dirp); 1108 /* for lseek */
933 errorno = errno; 1109 const_iv (SEEK_DATA)
1110 const_iv (SEEK_HOLE)
934 1111
935 if (e) 1112 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
936 { 1113 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
937 *res = ent; 1114 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
938 strcpy (ent->d_name, e->d_name); 1115 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
939 } 1116 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
940 else 1117 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
941 *res = 0;
942 1118
943 UNLOCK (readdirlock); 1119 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1120 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1121 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1122 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1123 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
944 1124
945 errno = errorno; 1125 /* the second block will be 0 when missing */
946 return e ? 0 : -1; 1126 const_iv (O_ACCMODE)
947}
948#endif
949 1127
950/* sendfile always needs emulation */ 1128 const_iv (O_RDONLY)
951static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1129 const_iv (O_WRONLY)
952{ 1130 const_iv (O_RDWR)
953 ssize_t res; 1131 const_iv (O_CREAT)
1132 const_iv (O_TRUNC)
1133 const_iv (O_EXCL)
1134 const_iv (O_APPEND)
954 1135
955 if (!count) 1136 const_iv (O_ASYNC)
956 return 0; 1137 const_iv (O_DIRECT)
1138 const_iv (O_NOATIME)
957 1139
958#if HAVE_SENDFILE 1140 const_iv (O_CLOEXEC)
959# if __linux 1141 const_iv (O_NOCTTY)
960 res = sendfile (ofd, ifd, &offset, count); 1142 const_iv (O_NOFOLLOW)
1143 const_iv (O_NONBLOCK)
1144 const_iv (O_EXEC)
1145 const_iv (O_SEARCH)
1146 const_iv (O_DIRECTORY)
1147 const_iv (O_DSYNC)
1148 const_iv (O_RSYNC)
1149 const_iv (O_SYNC)
1150 const_iv (O_PATH)
1151 const_iv (O_TMPFILE)
1152 const_iv (O_TTY_INIT)
961 1153
962# elif __freebsd 1154 const_iv (S_IFIFO)
963 /* 1155 const_iv (S_IFCHR)
964 * Of course, the freebsd sendfile is a dire hack with no thoughts 1156 const_iv (S_IFBLK)
965 * wasted on making it similar to other I/O functions. 1157 const_iv (S_IFLNK)
966 */ 1158 const_iv (S_IFREG)
1159 const_iv (S_IFDIR)
1160 const_iv (S_IFWHT)
1161 const_iv (S_IFSOCK)
1162 const_iv (S_IFMT)
1163
1164 const_iv (ST_RDONLY)
1165 const_iv (ST_NOSUID)
1166 const_iv (ST_NODEV)
1167 const_iv (ST_NOEXEC)
1168 const_iv (ST_SYNCHRONOUS)
1169 const_iv (ST_MANDLOCK)
1170 const_iv (ST_WRITE)
1171 const_iv (ST_APPEND)
1172 const_iv (ST_IMMUTABLE)
1173 const_iv (ST_NOATIME)
1174 const_iv (ST_NODIRATIME)
1175 const_iv (ST_RELATIME)
1176
1177 const_iv (PROT_NONE)
1178 const_iv (PROT_EXEC)
1179 const_iv (PROT_READ)
1180 const_iv (PROT_WRITE)
1181
1182 const_iv (MAP_PRIVATE)
1183 const_iv (MAP_SHARED)
1184 const_iv (MAP_FIXED)
1185 const_iv (MAP_ANONYMOUS)
1186
1187 /* linuxish */
1188 const_iv (MAP_LOCKED)
1189 const_iv (MAP_NORESERVE)
1190 const_iv (MAP_POPULATE)
1191 const_iv (MAP_NONBLOCK)
1192 const_iv (MAP_GROWSDOWN)
1193 const_iv (MAP_32BIT)
1194 const_iv (MAP_HUGETLB)
1195 const_iv (MAP_STACK)
1196
1197 const_iv (MREMAP_MAYMOVE)
1198 const_iv (MREMAP_FIXED)
1199
1200 const_iv (MSG_CMSG_CLOEXEC)
1201 const_iv (SOCK_CLOEXEC)
1202
1203 const_iv (F_DUPFD_CLOEXEC)
1204
1205 const_iv (F_ADD_SEALS)
1206 const_iv (F_GET_SEALS)
1207 const_iv (F_SEAL_SEAL)
1208 const_iv (F_SEAL_SHRINK)
1209 const_iv (F_SEAL_GROW)
1210 const_iv (F_SEAL_WRITE)
1211
1212 const_iv (F_OFD_GETLK)
1213 const_iv (F_OFD_SETLK)
1214 const_iv (F_OFD_GETLKW)
1215
1216 const_iv (FIFREEZE)
1217 const_iv (FITHAW)
1218 const_iv (FITRIM)
1219 const_iv (FICLONE)
1220 const_iv (FICLONERANGE)
1221 const_iv (FIDEDUPERANGE)
1222
1223 const_iv (FS_IOC_GETFLAGS)
1224 const_iv (FS_IOC_SETFLAGS)
1225 const_iv (FS_IOC_GETVERSION)
1226 const_iv (FS_IOC_SETVERSION)
1227 const_iv (FS_IOC_FIEMAP)
1228 const_iv (FS_IOC_FSGETXATTR)
1229 const_iv (FS_IOC_FSSETXATTR)
1230 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1231 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1232 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1233
1234 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1235
1236 const_iv (FS_SECRM_FL)
1237 const_iv (FS_UNRM_FL)
1238 const_iv (FS_COMPR_FL)
1239 const_iv (FS_SYNC_FL)
1240 const_iv (FS_IMMUTABLE_FL)
1241 const_iv (FS_APPEND_FL)
1242 const_iv (FS_NODUMP_FL)
1243 const_iv (FS_NOATIME_FL)
1244 const_iv (FS_DIRTY_FL)
1245 const_iv (FS_COMPRBLK_FL)
1246 const_iv (FS_NOCOMP_FL)
1247 const_iv (FS_ENCRYPT_FL)
1248 const_iv (FS_BTREE_FL)
1249 const_iv (FS_INDEX_FL)
1250 const_iv (FS_JOURNAL_DATA_FL)
1251 const_iv (FS_NOTAIL_FL)
1252 const_iv (FS_DIRSYNC_FL)
1253 const_iv (FS_TOPDIR_FL)
1254 const_iv (FS_FL_USER_MODIFIABLE)
1255
1256 const_iv (FS_XFLAG_REALTIME)
1257 const_iv (FS_XFLAG_PREALLOC)
1258 const_iv (FS_XFLAG_IMMUTABLE)
1259 const_iv (FS_XFLAG_APPEND)
1260 const_iv (FS_XFLAG_SYNC)
1261 const_iv (FS_XFLAG_NOATIME)
1262 const_iv (FS_XFLAG_NODUMP)
1263 const_iv (FS_XFLAG_RTINHERIT)
1264 const_iv (FS_XFLAG_PROJINHERIT)
1265 const_iv (FS_XFLAG_NOSYMLINKS)
1266 const_iv (FS_XFLAG_EXTSIZE)
1267 const_iv (FS_XFLAG_EXTSZINHERIT)
1268 const_iv (FS_XFLAG_NODEFRAG)
1269 const_iv (FS_XFLAG_FILESTREAM)
1270 const_iv (FS_XFLAG_DAX)
1271 const_iv (FS_XFLAG_HASATTR)
1272
1273 const_iv (FIEMAP_FLAG_SYNC)
1274 const_iv (FIEMAP_FLAG_XATTR)
1275 const_iv (FIEMAP_FLAGS_COMPAT)
1276 const_iv (FIEMAP_EXTENT_LAST)
1277 const_iv (FIEMAP_EXTENT_UNKNOWN)
1278 const_iv (FIEMAP_EXTENT_DELALLOC)
1279 const_iv (FIEMAP_EXTENT_ENCODED)
1280 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1281 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1282 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1283 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1284 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1285 const_iv (FIEMAP_EXTENT_MERGED)
1286 const_iv (FIEMAP_EXTENT_SHARED)
1287
1288 const_iv (SPLICE_F_MOVE)
1289 const_iv (SPLICE_F_NONBLOCK)
1290 const_iv (SPLICE_F_MORE)
1291 const_iv (SPLICE_F_GIFT)
1292
1293 const_iv (EFD_CLOEXEC)
1294 const_iv (EFD_NONBLOCK)
1295 const_iv (EFD_SEMAPHORE)
1296
1297 const_iv (MFD_CLOEXEC)
1298 const_iv (MFD_ALLOW_SEALING)
1299 const_iv (MFD_HUGETLB)
1300
1301 const_iv (CLOCK_REALTIME)
1302 const_iv (CLOCK_MONOTONIC)
1303 const_iv (CLOCK_BOOTTIME)
1304 const_iv (CLOCK_REALTIME_ALARM)
1305 const_iv (CLOCK_BOOTTIME_ALARM)
1306
1307 const_iv (TFD_NONBLOCK)
1308 const_iv (TFD_CLOEXEC)
1309
1310 const_iv (TFD_TIMER_ABSTIME)
1311 const_iv (TFD_TIMER_CANCEL_ON_SET)
1312
1313 const_iv (STATX_TYPE)
1314 const_iv (STATX_MODE)
1315 const_iv (STATX_NLINK)
1316 const_iv (STATX_UID)
1317 const_iv (STATX_GID)
1318 const_iv (STATX_ATIME)
1319 const_iv (STATX_MTIME)
1320 const_iv (STATX_CTIME)
1321 const_iv (STATX_INO)
1322 const_iv (STATX_SIZE)
1323 const_iv (STATX_BLOCKS)
1324 const_iv (STATX_BASIC_STATS)
1325 const_iv (STATX_ALL)
1326 const_iv (STATX_BTIME)
1327 const_iv (STATX_ATTR_COMPRESSED)
1328 const_iv (STATX_ATTR_IMMUTABLE)
1329 const_iv (STATX_ATTR_APPEND)
1330 const_iv (STATX_ATTR_NODUMP)
1331 const_iv (STATX_ATTR_ENCRYPTED)
1332 const_iv (STATX_ATTR_AUTOMOUNT)
1333
1334 /* these are libeio constants, and are independent of gendef0 */
1335 const_eio (SEEK_SET)
1336 const_eio (SEEK_CUR)
1337 const_eio (SEEK_END)
1338
1339 const_eio (MCL_FUTURE)
1340 const_eio (MCL_CURRENT)
1341 const_eio (MCL_ONFAULT)
1342
1343 const_eio (MS_ASYNC)
1344 const_eio (MS_INVALIDATE)
1345 const_eio (MS_SYNC)
1346
1347 const_eio (MT_MODIFY)
1348
1349 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1350 const_eio (SYNC_FILE_RANGE_WRITE)
1351 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1352
1353 const_eio (FALLOC_FL_KEEP_SIZE)
1354 const_eio (FALLOC_FL_PUNCH_HOLE)
1355 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1356 const_eio (FALLOC_FL_ZERO_RANGE)
1357 const_eio (FALLOC_FL_INSERT_RANGE)
1358 const_eio (FALLOC_FL_UNSHARE_RANGE)
1359
1360 const_eio (RENAME_NOREPLACE)
1361 const_eio (RENAME_EXCHANGE)
1362 const_eio (RENAME_WHITEOUT)
1363
1364 const_eio (READDIR_DENTS)
1365 const_eio (READDIR_DIRS_FIRST)
1366 const_eio (READDIR_STAT_ORDER)
1367 const_eio (READDIR_FOUND_UNKNOWN)
1368
1369 const_eio (DT_UNKNOWN)
1370 const_eio (DT_FIFO)
1371 const_eio (DT_CHR)
1372 const_eio (DT_DIR)
1373 const_eio (DT_BLK)
1374 const_eio (DT_REG)
1375 const_eio (DT_LNK)
1376 const_eio (DT_SOCK)
1377 const_eio (DT_WHT)
1378 };
1379
1380 aio_stash = gv_stashpv ("IO::AIO" , 1);
1381 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1382 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1383 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1384
1385 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1386 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1387
1388 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1389
1390 /* allocate dummy pipe fd for aio_close */
967 { 1391 {
968 off_t sbytes; 1392 int pipefd [2];
969 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970 1393
971 if (res < 0 && sbytes) 1394 if (
972 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1395#ifdef _WIN32
973 res = sbytes; 1396 _pipe (pipefd, 1, _O_BINARY) < 0
1397#else
1398 pipe (pipefd) < 0
1399 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1400#endif
1401 || close (pipefd [1]) < 0
1402 )
1403 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1404
1405 close_fd = pipefd [0];
974 } 1406 }
975 1407
976# elif __hpux 1408 reinit ();
977 res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979# elif __solaris
980 {
981 struct sendfilevec vec;
982 size_t sbytes;
983
984 vec.sfv_fd = ifd;
985 vec.sfv_flag = 0;
986 vec.sfv_off = offset;
987 vec.sfv_len = count;
988
989 res = sendfilev (ofd, &vec, 1, &sbytes);
990
991 if (res < 0 && sbytes)
992 res = sbytes;
993 }
994
995# endif
996#else
997 res = -1;
998 errno = ENOSYS;
999#endif
1000
1001 if (res < 0
1002 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003#if __solaris
1004 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005#endif
1006 )
1007 )
1008 {
1009 /* emulate sendfile. this is a major pain in the ass */
1010 dBUF;
1011
1012 res = 0;
1013
1014 while (count)
1015 {
1016 ssize_t cnt;
1017
1018 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020 if (cnt <= 0)
1021 {
1022 if (cnt && !res) res = -1;
1023 break;
1024 }
1025
1026 cnt = write (ofd, aio_buf, cnt);
1027
1028 if (cnt <= 0)
1029 {
1030 if (cnt && !res) res = -1;
1031 break;
1032 }
1033
1034 offset += cnt;
1035 res += cnt;
1036 count -= cnt;
1037 }
1038 }
1039
1040 return res;
1041} 1409}
1042 1410
1043/* read a full directory */
1044static void scandir_ (aio_req req, worker *self)
1045{
1046 DIR *dirp;
1047 union
1048 {
1049 struct dirent d;
1050 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051 } *u;
1052 struct dirent *entp;
1053 char *name, *names;
1054 int memlen = 4096;
1055 int memofs = 0;
1056 int res = 0;
1057 int errorno;
1058
1059 LOCK (wrklock);
1060 self->dirp = dirp = opendir (req->ptr1);
1061 self->dbuf = u = malloc (sizeof (*u));
1062 req->flags |= FLAG_PTR2_FREE;
1063 req->ptr2 = names = malloc (memlen);
1064 UNLOCK (wrklock);
1065
1066 if (dirp && u && names)
1067 for (;;)
1068 {
1069 errno = 0;
1070 readdir_r (dirp, &u->d, &entp);
1071
1072 if (!entp)
1073 break;
1074
1075 name = entp->d_name;
1076
1077 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078 {
1079 int len = strlen (name) + 1;
1080
1081 res++;
1082
1083 while (memofs + len > memlen)
1084 {
1085 memlen *= 2;
1086 LOCK (wrklock);
1087 req->ptr2 = names = realloc (names, memlen);
1088 UNLOCK (wrklock);
1089
1090 if (!names)
1091 break;
1092 }
1093
1094 memcpy (names + memofs, name, len);
1095 memofs += len;
1096 }
1097 }
1098
1099 if (errno)
1100 res = -1;
1101
1102 req->result = res;
1103}
1104
1105/*****************************************************************************/
1106
1107static void *aio_proc (void *thr_arg)
1108{
1109 aio_req req;
1110 struct timespec ts;
1111 worker *self = (worker *)thr_arg;
1112
1113 /* try to distribute timeouts somewhat evenly */
1114 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115 * (1000000000UL / 1024UL);
1116
1117 for (;;)
1118 {
1119 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121 LOCK (reqlock);
1122
1123 for (;;)
1124 {
1125 self->req = req = reqq_shift (&req_queue);
1126
1127 if (req)
1128 break;
1129
1130 ++idle;
1131
1132 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133 == ETIMEDOUT)
1134 {
1135 if (idle > max_idle)
1136 {
1137 --idle;
1138 UNLOCK (reqlock);
1139 LOCK (wrklock);
1140 --started;
1141 UNLOCK (wrklock);
1142 goto quit;
1143 }
1144
1145 /* we are allowed to idle, so do so without any timeout */
1146 pthread_cond_wait (&reqwait, &reqlock);
1147 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148 }
1149
1150 --idle;
1151 }
1152
1153 --nready;
1154
1155 UNLOCK (reqlock);
1156
1157 errno = 0; /* strictly unnecessary */
1158
1159 if (!(req->flags & FLAG_CANCELLED))
1160 switch (req->type)
1161 {
1162 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173 case REQ_CLOSE: req->result = close (req->int1); break;
1174 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1177 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1178 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1179 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1180 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1181 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1182
1183 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1184 case REQ_FSYNC: req->result = fsync (req->int1); break;
1185 case REQ_READDIR: scandir_ (req, self); break;
1186
1187 case REQ_BUSY:
1188 {
1189 struct timeval tv;
1190
1191 tv.tv_sec = req->int1;
1192 tv.tv_usec = req->int2;
1193
1194 req->result = select (0, 0, 0, 0, &tv);
1195 }
1196
1197 case REQ_GROUP:
1198 case REQ_NOP:
1199 break;
1200
1201 case REQ_QUIT:
1202 goto quit;
1203
1204 default:
1205 req->result = ENOSYS;
1206 break;
1207 }
1208
1209 req->errorno = errno;
1210
1211 LOCK (reslock);
1212
1213 ++npending;
1214
1215 if (!reqq_push (&res_queue, req))
1216 {
1217 /* write a dummy byte to the pipe so fh becomes ready */
1218 write (respipe [1], &respipe, 1);
1219
1220 /* optionally signal the main thread asynchronously */
1221 if (main_sig)
1222 pthread_kill (main_tid, main_sig);
1223 }
1224
1225 self->req = 0;
1226 worker_clear (self);
1227
1228 UNLOCK (reslock);
1229 }
1230
1231quit:
1232 LOCK (wrklock);
1233 worker_free (self);
1234 UNLOCK (wrklock);
1235
1236 return 0;
1237}
1238
1239/*****************************************************************************/
1240
1241static void atfork_prepare (void)
1242{
1243 LOCK (wrklock);
1244 LOCK (reqlock);
1245 LOCK (reslock);
1246#if !HAVE_PREADWRITE
1247 LOCK (preadwritelock);
1248#endif
1249#if !HAVE_READDIR_R
1250 LOCK (readdirlock);
1251#endif
1252}
1253
1254static void atfork_parent (void)
1255{
1256#if !HAVE_READDIR_R
1257 UNLOCK (readdirlock);
1258#endif
1259#if !HAVE_PREADWRITE
1260 UNLOCK (preadwritelock);
1261#endif
1262 UNLOCK (reslock);
1263 UNLOCK (reqlock);
1264 UNLOCK (wrklock);
1265}
1266
1267static void atfork_child (void)
1268{
1269 aio_req prv;
1270
1271 while (prv = reqq_shift (&req_queue))
1272 req_free (prv);
1273
1274 while (prv = reqq_shift (&res_queue))
1275 req_free (prv);
1276
1277 while (wrk_first.next != &wrk_first)
1278 {
1279 worker *wrk = wrk_first.next;
1280
1281 if (wrk->req)
1282 req_free (wrk->req);
1283
1284 worker_clear (wrk);
1285 worker_free (wrk);
1286 }
1287
1288 started = 0;
1289 idle = 0;
1290 nreqs = 0;
1291 nready = 0;
1292 npending = 0;
1293
1294 close (respipe [0]);
1295 close (respipe [1]);
1296 create_pipe ();
1297
1298 atfork_parent ();
1299}
1300
1301#define dREQ \
1302 aio_req req; \
1303 int req_pri = next_pri; \
1304 next_pri = DEFAULT_PRI + PRI_BIAS; \
1305 \
1306 if (SvOK (callback) && !SvROK (callback)) \
1307 croak ("callback must be undef or of reference type"); \
1308 \
1309 Newz (0, req, 1, aio_cb); \
1310 if (!req) \
1311 croak ("out of memory during aio_req allocation"); \
1312 \
1313 req->callback = newSVsv (callback); \
1314 req->pri = req_pri
1315
1316#define REQ_SEND \
1317 req_send (req); \
1318 \
1319 if (GIMME_V != G_VOID) \
1320 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1321
1322MODULE = IO::AIO PACKAGE = IO::AIO
1323
1324PROTOTYPES: ENABLE
1325
1326BOOT:
1327{
1328 HV *stash = gv_stashpv ("IO::AIO", 1);
1329
1330 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1331 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1332 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1333 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1334 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1335 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1336 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1337
1338 create_pipe ();
1339 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1340}
1341
1342void 1411void
1412reinit ()
1413 PROTOTYPE:
1414
1415void
1343max_poll_reqs (int nreqs) 1416max_poll_reqs (unsigned int nreqs)
1344 PROTOTYPE: $ 1417 PROTOTYPE: $
1345 CODE: 1418 CODE:
1346 max_poll_reqs = nreqs; 1419 eio_set_max_poll_reqs (nreqs);
1347 1420
1348void 1421void
1349max_poll_time (double nseconds) 1422max_poll_time (double nseconds)
1350 PROTOTYPE: $ 1423 PROTOTYPE: $
1351 CODE: 1424 CODE:
1352 max_poll_time = nseconds * AIO_TICKS; 1425 eio_set_max_poll_time (nseconds);
1353 1426
1354void 1427void
1355min_parallel (int nthreads) 1428min_parallel (unsigned int nthreads)
1356 PROTOTYPE: $
1357
1358void
1359max_parallel (int nthreads)
1360 PROTOTYPE: $
1361
1362void
1363max_idle (int nthreads)
1364 PROTOTYPE: $ 1429 PROTOTYPE: $
1365 CODE: 1430 CODE:
1366 set_max_idle (nthreads); 1431 eio_set_min_parallel (nthreads);
1367 1432
1368int 1433void
1369max_outstanding (int maxreqs) 1434max_parallel (unsigned int nthreads)
1370 PROTOTYPE: $ 1435 PROTOTYPE: $
1371 CODE: 1436 CODE:
1372 RETVAL = max_outstanding; 1437 eio_set_max_parallel (nthreads);
1438
1439void
1440max_idle (unsigned int nthreads)
1441 PROTOTYPE: $
1442 CODE:
1443 eio_set_max_idle (nthreads);
1444
1445void
1446idle_timeout (unsigned int seconds)
1447 PROTOTYPE: $
1448 CODE:
1449 eio_set_idle_timeout (seconds);
1450
1451void
1452max_outstanding (unsigned int maxreqs)
1453 PROTOTYPE: $
1454 CODE:
1373 max_outstanding = maxreqs; 1455 max_outstanding = maxreqs;
1374 OUTPUT:
1375 RETVAL
1376 1456
1377void 1457void
1378aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1458aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1379 SV8 * pathname
1380 int flags
1381 int mode
1382 SV * callback
1383 PROTOTYPE: $$$;$
1384 PPCODE: 1459 PPCODE:
1385{ 1460{
1386 dREQ; 1461 dREQ;
1387 1462
1463 req->type = EIO_WD_OPEN;
1464 req_set_path1 (req, pathname);
1465
1466 REQ_SEND;
1467}
1468
1469void
1470aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1471 PPCODE:
1472{
1473 dREQ;
1474
1388 req->type = REQ_OPEN; 1475 req->type = EIO_OPEN;
1389 req->sv1 = newSVsv (pathname); 1476 req_set_path1 (req, pathname);
1390 req->ptr1 = SvPVbyte_nolen (req->sv1);
1391 req->int1 = flags; 1477 req->int1 = flags;
1392 req->mode = mode; 1478 req->int2 = mode;
1393 1479
1394 REQ_SEND; 1480 REQ_SEND;
1395} 1481}
1396 1482
1397void 1483void
1398aio_close (fh,callback=&PL_sv_undef) 1484aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1399 SV * fh
1400 SV * callback
1401 PROTOTYPE: $;$
1402 ALIAS: 1485 ALIAS:
1403 aio_close = REQ_CLOSE
1404 aio_fsync = REQ_FSYNC 1486 aio_fsync = EIO_FSYNC
1405 aio_fdatasync = REQ_FDATASYNC 1487 aio_fdatasync = EIO_FDATASYNC
1488 aio_syncfs = EIO_SYNCFS
1406 PPCODE: 1489 PPCODE:
1407{ 1490{
1491 int fd = s_fileno_croak (fh, 0);
1408 dREQ; 1492 dREQ;
1409 1493
1410 req->type = ix; 1494 req->type = ix;
1411 req->fh = newSVsv (fh); 1495 req->sv1 = newSVsv (fh);
1412 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1496 req->int1 = fd;
1413 1497
1414 REQ_SEND (req); 1498 REQ_SEND;
1415} 1499}
1416 1500
1417void 1501void
1502aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1503 PPCODE:
1504{
1505 int fd = s_fileno_croak (fh, 0);
1506 dREQ;
1507
1508 req->type = EIO_SYNC_FILE_RANGE;
1509 req->sv1 = newSVsv (fh);
1510 req->int1 = fd;
1511 req->offs = offset;
1512 req->size = nbytes;
1513 req->int2 = flags;
1514
1515 REQ_SEND;
1516}
1517
1518void
1519aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1520 PPCODE:
1521{
1522 int fd = s_fileno_croak (fh, 0);
1523 dREQ;
1524
1525 req->type = EIO_FALLOCATE;
1526 req->sv1 = newSVsv (fh);
1527 req->int1 = fd;
1528 req->int2 = mode;
1529 req->offs = offset;
1530 req->size = len;
1531
1532 REQ_SEND;
1533}
1534
1535void
1536aio_close (SV *fh, SV *callback = &PL_sv_undef)
1537 PPCODE:
1538{
1539 int fd = s_fileno_croak (fh, 0);
1540 dREQ;
1541#if 0
1542 /* partially duplicate logic in s_fileno */
1543 SvGETMAGIC (fh);
1544
1545 if (SvROK (fh))
1546 {
1547 fh = SvRV (fh);
1548 SvGETMAGIC (fh);
1549 }
1550
1551 if (SvTYPE (fh) == SVt_PVGV)
1552 {
1553 /* perl filehandle */
1554 PerlIOUnix_refcnt_inc (fd);
1555 do_close ((GV *)fh, 1);
1556
1557 req->type = EIO_CLOSE;
1558 req->int1 = fd;
1559 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1560 }
1561 else
1562#endif
1563 {
1564 /* fd number */
1565 req->type = EIO_DUP2;
1566 req->int1 = close_fd;
1567 req->sv2 = newSVsv (fh);
1568 req->int2 = fd;
1569 }
1570
1571 REQ_SEND;
1572}
1573
1574void
1575aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1576 PPCODE:
1577{
1578 int fd = s_fileno_croak (fh, 0);
1579 dREQ;
1580
1581 req->type = EIO_SEEK;
1582 req->sv1 = newSVsv (fh);
1583 req->int1 = fd;
1584 req->offs = SvVAL64 (offset);
1585 req->int2 = whence;
1586
1587 REQ_SEND;
1588}
1589
1590void
1418aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1591aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1419 SV * fh
1420 UV offset
1421 UV length
1422 SV8 * data
1423 UV dataoffset
1424 SV * callback
1425 ALIAS: 1592 ALIAS:
1426 aio_read = REQ_READ 1593 aio_read = EIO_READ
1427 aio_write = REQ_WRITE 1594 aio_write = EIO_WRITE
1428 PROTOTYPE: $$$$$;$
1429 PPCODE: 1595 PPCODE:
1430{ 1596{
1431 STRLEN svlen; 1597 STRLEN svlen;
1598 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1432 char *svptr = SvPVbyte (data, svlen); 1599 char *svptr = SvPVbyte (data, svlen);
1433 1600 UV len = SvUV (length);
1434 SvUPGRADE (data, SVt_PV);
1435 SvPOK_on (data);
1436 1601
1437 if (dataoffset < 0) 1602 if (dataoffset < 0)
1438 dataoffset += svlen; 1603 dataoffset += svlen;
1439 1604
1440 if (dataoffset < 0 || dataoffset > svlen) 1605 if (dataoffset < 0 || dataoffset > svlen)
1441 croak ("data offset outside of string"); 1606 croak ("dataoffset outside of data scalar");
1442 1607
1443 if (ix == REQ_WRITE) 1608 if (ix == EIO_WRITE)
1444 { 1609 {
1445 /* write: check length and adjust. */ 1610 /* write: check length and adjust. */
1446 if (length < 0 || length + dataoffset > svlen) 1611 if (!SvOK (length) || len + dataoffset > svlen)
1447 length = svlen - dataoffset; 1612 len = svlen - dataoffset;
1448 } 1613 }
1449 else 1614 else
1450 { 1615 {
1451 /* read: grow scalar as necessary */ 1616 /* read: check type and grow scalar as necessary */
1617 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1452 svptr = SvGROW (data, length + dataoffset + 1); 1618 svptr = sv_grow (data, len + dataoffset + 1);
1619 else if (SvCUR (data) < len + dataoffset)
1620 croak ("length + dataoffset outside of scalar, and cannot grow");
1453 } 1621 }
1454
1455 if (length < 0)
1456 croak ("length must not be negative");
1457 1622
1458 { 1623 {
1459 dREQ; 1624 dREQ;
1460 1625
1461 req->type = ix; 1626 req->type = ix;
1462 req->fh = newSVsv (fh); 1627 req->sv1 = newSVsv (fh);
1463 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1628 req->int1 = fd;
1464 : IoOFP (sv_2io (fh))); 1629 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1465 req->offs = offset;
1466 req->size = length; 1630 req->size = len;
1467 req->sv1 = SvREFCNT_inc (data); 1631 req->sv2 = SvREFCNT_inc (data);
1468 req->ptr1 = (char *)svptr + dataoffset; 1632 req->ptr2 = (char *)svptr + dataoffset;
1469 req->stroffset = dataoffset; 1633 req->stroffset = dataoffset;
1470 1634
1471 if (!SvREADONLY (data)) 1635 if (!SvREADONLY (data))
1472 { 1636 {
1473 SvREADONLY_on (data); 1637 SvREADONLY_on (data);
1474 req->flags |= FLAG_SV1_RO_OFF; 1638 req->flags |= FLAG_SV2_RO_OFF;
1475 } 1639 }
1476 1640
1477 REQ_SEND; 1641 REQ_SEND;
1478 } 1642 }
1479} 1643}
1480 1644
1481void 1645void
1482aio_readlink (path,callback=&PL_sv_undef) 1646aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1483 SV8 * path 1647 ALIAS:
1484 SV * callback 1648 aio_ioctl = EIO_IOCTL
1485 PROTOTYPE: $$;$ 1649 aio_fcntl = EIO_FCNTL
1486 PPCODE: 1650 PPCODE:
1487{ 1651{
1488 SV *data; 1652 int fd = s_fileno_croak (fh, 0);
1653 char *svptr;
1654
1655 if (SvPOK (arg) || !SvNIOK (arg))
1656 {
1657 STRLEN svlen;
1658 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1659#ifdef IOCPARM_LEN
1660 STRLEN need = IOCPARM_LEN (request);
1661#else
1662 STRLEN need = 256;
1663#endif
1664
1665 if (svlen < need)
1666 svptr = SvGROW (arg, need);
1667 }
1668 else
1669 svptr = (char *)SvIV (arg);
1670
1671 {
1672 dREQ;
1673
1674 req->type = ix;
1675 req->sv1 = newSVsv (fh);
1676 req->int1 = fd;
1677 req->int2 = (long)request;
1678 req->sv2 = SvREFCNT_inc (arg);
1679 req->ptr2 = svptr;
1680
1681 REQ_SEND;
1682 }
1683}
1684
1685void
1686aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1687 ALIAS:
1688 aio_readlink = EIO_READLINK
1689 aio_realpath = EIO_REALPATH
1690 PPCODE:
1691{
1489 dREQ; 1692 dREQ;
1490 1693
1491 data = newSV (NAME_MAX);
1492 SvPOK_on (data);
1493
1494 req->type = REQ_READLINK; 1694 req->type = ix;
1495 req->fh = newSVsv (path); 1695 req_set_path1 (req, pathname);
1496 req->ptr2 = SvPVbyte_nolen (req->fh);
1497 req->sv1 = data;
1498 req->ptr1 = SvPVbyte_nolen (data);
1499 1696
1500 REQ_SEND; 1697 REQ_SEND;
1501} 1698}
1502 1699
1503void 1700void
1504aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1701aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1505 SV * out_fh
1506 SV * in_fh
1507 UV in_offset
1508 UV length
1509 SV * callback
1510 PROTOTYPE: $$$$;$
1511 PPCODE: 1702 PPCODE:
1512{ 1703{
1704 int ifd = s_fileno_croak (in_fh , 0);
1705 int ofd = s_fileno_croak (out_fh, 1);
1513 dREQ; 1706 dREQ;
1514 1707
1515 req->type = REQ_SENDFILE; 1708 req->type = EIO_SENDFILE;
1516 req->fh = newSVsv (out_fh); 1709 req->sv1 = newSVsv (out_fh);
1517 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1710 req->int1 = ofd;
1518 req->sv2 = newSVsv (in_fh); 1711 req->sv2 = newSVsv (in_fh);
1519 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1712 req->int2 = ifd;
1520 req->offs = in_offset; 1713 req->offs = in_offset;
1521 req->size = length; 1714 req->size = length;
1522 1715
1523 REQ_SEND; 1716 REQ_SEND;
1524} 1717}
1525 1718
1526void 1719void
1527aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1720aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1528 SV * fh
1529 UV offset
1530 IV length
1531 SV * callback
1532 PROTOTYPE: $$$;$
1533 PPCODE: 1721 PPCODE:
1534{ 1722{
1723 int fd = s_fileno_croak (fh, 0);
1535 dREQ; 1724 dREQ;
1536 1725
1537 req->type = REQ_READAHEAD; 1726 req->type = EIO_READAHEAD;
1538 req->fh = newSVsv (fh); 1727 req->sv1 = newSVsv (fh);
1539 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1728 req->int1 = fd;
1540 req->offs = offset; 1729 req->offs = offset;
1541 req->size = length; 1730 req->size = length;
1542 1731
1543 REQ_SEND; 1732 REQ_SEND;
1544} 1733}
1545 1734
1546void 1735void
1547aio_stat (fh_or_path,callback=&PL_sv_undef) 1736aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1548 SV8 * fh_or_path
1549 SV * callback
1550 ALIAS: 1737 ALIAS:
1551 aio_stat = REQ_STAT 1738 aio_stat = EIO_STAT
1552 aio_lstat = REQ_LSTAT 1739 aio_lstat = EIO_LSTAT
1740 aio_statvfs = EIO_STATVFS
1553 PPCODE: 1741 PPCODE:
1554{ 1742{
1555 dREQ; 1743 dREQ;
1556 1744
1557 req->ptr2 = malloc (sizeof (Stat_t)); 1745 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1558 if (!req->ptr2)
1559 {
1560 req_free (req);
1561 croak ("out of memory during aio_stat statdata allocation");
1562 }
1563
1564 req->flags |= FLAG_PTR2_FREE;
1565
1566 if (SvPOK (fh_or_path))
1567 {
1568 req->type = ix;
1569 req->sv1 = newSVsv (fh_or_path);
1570 req->ptr1 = SvPVbyte_nolen (req->sv1);
1571 }
1572 else
1573 {
1574 req->type = REQ_FSTAT;
1575 req->fh = newSVsv (fh_or_path);
1576 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1577 }
1578 1746
1579 REQ_SEND; 1747 REQ_SEND;
1580} 1748}
1581 1749
1582void 1750void
1751st_xtime ()
1752 ALIAS:
1753 st_atime = 0x01
1754 st_mtime = 0x02
1755 st_ctime = 0x04
1756 st_btime = 0x08
1757 st_xtime = 0x0f
1758 PPCODE:
1759 EXTEND (SP, 4);
1760 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1761 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1762 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1763 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1764
1765void
1766st_xtimensec ()
1767 ALIAS:
1768 st_atimensec = 0x01
1769 st_mtimensec = 0x02
1770 st_ctimensec = 0x04
1771 st_btimensec = 0x08
1772 st_xtimensec = 0x0f
1773 st_btimesec = 0x10
1774 st_gen = 0x20
1775 PPCODE:
1776 EXTEND (SP, 4);
1777 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1778 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1779 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1780 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1781 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1782 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1783
1784UV
1785major (UV dev)
1786 ALIAS:
1787 minor = 1
1788 CODE:
1789 RETVAL = ix ? minor (dev) : major (dev);
1790 OUTPUT:
1791 RETVAL
1792
1793UV
1794makedev (UV maj, UV min)
1795 CODE:
1796 RETVAL = makedev (maj, min);
1797 OUTPUT:
1798 RETVAL
1799
1800void
1801aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1802 PPCODE:
1803{
1804 dREQ;
1805
1806 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1807 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1808 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1809
1810 REQ_SEND;
1811}
1812
1813void
1814aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1815 PPCODE:
1816{
1817 dREQ;
1818
1819 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1820 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1821
1822 REQ_SEND;
1823}
1824
1825void
1826aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1827 PPCODE:
1828{
1829 dREQ;
1830
1831 req->int2 = mode;
1832 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1833
1834 REQ_SEND;
1835}
1836
1837void
1838aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1839 PPCODE:
1840{
1841 dREQ;
1842
1843 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1844 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1845 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1846
1847 REQ_SEND;
1848}
1849
1850void
1851aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1852 PPCODE:
1853{
1854 dREQ;
1855
1856 req->type = EIO_READDIR;
1857 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1858
1859 if (flags & EIO_READDIR_DENTS)
1860 req->int1 |= EIO_READDIR_CUSTOM2;
1861
1862 req_set_path1 (req, pathname);
1863
1864 REQ_SEND;
1865}
1866
1867void
1868aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1869 PPCODE:
1870{
1871 dREQ;
1872
1873 req->type = EIO_MKDIR;
1874 req->int2 = mode;
1875 req_set_path1 (req, pathname);
1876
1877 REQ_SEND;
1878}
1879
1880void
1583aio_unlink (pathname,callback=&PL_sv_undef) 1881aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1584 SV8 * pathname
1585 SV * callback
1586 ALIAS: 1882 ALIAS:
1587 aio_unlink = REQ_UNLINK 1883 aio_unlink = EIO_UNLINK
1588 aio_rmdir = REQ_RMDIR 1884 aio_rmdir = EIO_RMDIR
1589 aio_readdir = REQ_READDIR 1885 aio_readdir = EIO_READDIR
1590 PPCODE: 1886 PPCODE:
1591{ 1887{
1592 dREQ; 1888 dREQ;
1593 1889
1594 req->type = ix; 1890 req->type = ix;
1595 req->sv1 = newSVsv (pathname); 1891 req_set_path1 (req, pathname);
1596 req->ptr1 = SvPVbyte_nolen (req->sv1);
1597 1892
1598 REQ_SEND; 1893 REQ_SEND;
1599} 1894}
1600 1895
1601void 1896void
1602aio_mkdir (pathname,mode,callback=&PL_sv_undef) 1897aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1603 SV8 * pathname 1898 ALIAS:
1604 UV mode 1899 aio_link = EIO_LINK
1605 SV * callback 1900 aio_symlink = EIO_SYMLINK
1901 aio_rename = EIO_RENAME
1606 PPCODE: 1902 PPCODE:
1607{ 1903{
1608 dREQ; 1904 eio_wd wd2 = 0;
1609
1610 req->type = REQ_MKDIR;
1611 req->sv1 = newSVsv (pathname);
1612 req->ptr1 = SvPVbyte_nolen (req->sv1);
1613 req->mode = mode;
1614
1615 REQ_SEND;
1616}
1617
1618void
1619aio_link (oldpath,newpath,callback=&PL_sv_undef)
1620 SV8 * oldpath
1621 SV8 * newpath
1622 SV * callback
1623 ALIAS:
1624 aio_link = REQ_LINK
1625 aio_symlink = REQ_SYMLINK
1626 aio_rename = REQ_RENAME
1627 PPCODE:
1628{
1629 dREQ; 1905 dREQ;
1630 1906
1631 req->type = ix; 1907 req->type = ix;
1632 req->fh = newSVsv (oldpath); 1908 req_set_path1 (req, oldpath);
1633 req->ptr2 = SvPVbyte_nolen (req->fh); 1909 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1634 req->sv1 = newSVsv (newpath); 1910 req->int3 = (long)wd2;
1635 req->ptr1 = SvPVbyte_nolen (req->sv1);
1636 1911
1637 REQ_SEND; 1912 REQ_SEND;
1638} 1913}
1639 1914
1640void 1915void
1641aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1916aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1642 SV8 * pathname
1643 UV mode
1644 UV dev
1645 SV * callback
1646 PPCODE: 1917 PPCODE:
1647{ 1918{
1919 eio_wd wd2 = 0;
1648 dREQ; 1920 dREQ;
1649 1921
1650 req->type = REQ_MKNOD; 1922 req->type = EIO_RENAME;
1651 req->sv1 = newSVsv (pathname); 1923 req_set_path1 (req, oldpath);
1652 req->ptr1 = SvPVbyte_nolen (req->sv1); 1924 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1653 req->mode = (mode_t)mode; 1925 req->int2 = flags;
1654 req->offs = dev; 1926 req->int3 = (long)wd2;
1655 1927
1656 REQ_SEND; 1928 REQ_SEND;
1657} 1929}
1658 1930
1659void 1931void
1660aio_busy (delay,callback=&PL_sv_undef) 1932aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1661 double delay
1662 SV * callback
1663 PPCODE: 1933 PPCODE:
1664{ 1934{
1665 dREQ; 1935 dREQ;
1666 1936
1667 req->type = REQ_BUSY; 1937 req->type = EIO_MKNOD;
1668 req->int1 = delay < 0. ? 0 : delay; 1938 req->int2 = (mode_t)mode;
1669 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1939 req->offs = dev;
1670 1940 req_set_path1 (req, pathname);
1941
1671 REQ_SEND; 1942 REQ_SEND;
1672} 1943}
1673 1944
1674void 1945void
1675aio_group (callback=&PL_sv_undef) 1946aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1676 SV * callback 1947 ALIAS:
1677 PROTOTYPE: ;$ 1948 aio_mtouch = EIO_MTOUCH
1949 aio_msync = EIO_MSYNC
1678 PPCODE: 1950 PPCODE:
1679{ 1951{
1952 STRLEN svlen;
1953 char *svptr = SvPVbyte (data, svlen);
1954 UV len = SvUV (length);
1955
1956 if (flags < 0)
1957 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1958
1959 if (offset < 0)
1960 offset += svlen;
1961
1962 if (offset < 0 || offset > svlen)
1963 croak ("offset outside of scalar");
1964
1965 if (!SvOK (length) || len + offset > svlen)
1966 len = svlen - offset;
1967
1968 {
1969 dREQ;
1970
1971 req->type = ix;
1972 req->sv2 = SvREFCNT_inc (data);
1973 req->ptr2 = (char *)svptr + offset;
1974 req->size = len;
1975 req->int1 = flags;
1976
1977 REQ_SEND;
1978 }
1979}
1980
1981void
1982aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1983 PPCODE:
1984{
1985 STRLEN svlen;
1986 char *svptr = SvPVbyte (data, svlen);
1987 UV len = SvUV (length);
1988
1989 if (offset < 0)
1990 offset += svlen;
1991
1992 if (offset < 0 || offset > svlen)
1993 croak ("offset outside of scalar");
1994
1995 if (!SvOK (length) || len + offset > svlen)
1996 len = svlen - offset;
1997
1998 {
1999 dREQ;
2000
2001 req->type = EIO_MLOCK;
2002 req->sv2 = SvREFCNT_inc (data);
2003 req->ptr2 = (char *)svptr + offset;
2004 req->size = len;
2005
2006 REQ_SEND;
2007 }
2008}
2009
2010void
2011aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
2012 PPCODE:
2013{
2014 dREQ;
2015
2016 req->type = EIO_MLOCKALL;
2017 req->int1 = flags;
2018
2019 REQ_SEND;
2020}
2021
2022void
2023aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
2024 PPCODE:
2025{
2026 int fd = s_fileno_croak (fh, 0);
1680 dREQ; 2027 dREQ;
1681 2028
1682 req->type = REQ_GROUP; 2029 req->type = EIO_CUSTOM;
2030 req->sv1 = newSVsv (fh);
2031 req->int1 = fd;
1683 2032
1684 req_send (req); 2033 req->feed = fiemap;
1685 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2034#if HAVE_FIEMAP
1686} 2035 /* keep our fingers crossed that the next two types are 64 bit */
2036 req->offs = start;
2037 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
2038 req->int2 = flags;
2039 req->int3 = SvOK (count) ? SvIV (count) : -1;
2040#endif
1687 2041
2042 REQ_SEND;
2043}
2044
1688void 2045void
1689aio_nop (callback=&PL_sv_undef) 2046aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1690 SV * callback 2047 PPCODE:
2048{
2049 char *svptr = 0;
2050
2051 sv_clear_foreign (data);
2052
2053 if (length) /* known length, directly read into scalar */
2054 {
2055 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2056 svptr = sv_grow (data, length + 1);
2057 else if (SvCUR (data) < length)
2058 croak ("length outside of scalar, and cannot grow");
2059 else
2060 svptr = SvPVbyte_nolen (data);
2061 }
2062
2063 {
2064 dREQ;
2065
2066 req->type = EIO_SLURP;
2067 req_set_path1 (req, pathname);
2068 req->offs = offset;
2069 req->size = length;
2070 req->sv2 = SvREFCNT_inc (data);
2071 req->ptr2 = svptr;
2072
2073 if (!SvREADONLY (data))
2074 {
2075 SvREADONLY_on (data);
2076 req->flags |= FLAG_SV2_RO_OFF;
2077 }
2078
2079 REQ_SEND;
2080 }
2081}
2082
2083void
2084aio_busy (double delay, SV *callback = &PL_sv_undef)
1691 PPCODE: 2085 PPCODE:
1692{ 2086{
1693 dREQ; 2087 dREQ;
1694 2088
1695 req->type = REQ_NOP; 2089 req->type = EIO_BUSY;
2090 req->nv1 = delay < 0. ? 0. : delay;
1696 2091
1697 REQ_SEND; 2092 REQ_SEND;
1698} 2093}
1699 2094
2095void
2096aio_group (SV *callback = &PL_sv_undef)
2097 PPCODE:
2098{
2099 dREQ;
2100
2101 req->type = EIO_GROUP;
2102
2103 PUTBACK;
2104 req_submit (req);
2105 SPAGAIN;
2106
2107 XPUSHs (req_sv (req, aio_grp_stash));
2108}
2109
2110void
2111aio_nop (SV *callback = &PL_sv_undef)
2112 ALIAS:
2113 aio_nop = EIO_NOP
2114 aio_sync = EIO_SYNC
2115 PPCODE:
2116{
2117 dREQ;
2118
2119 req->type = ix;
2120
2121 REQ_SEND;
2122}
2123
1700int 2124int
1701aioreq_pri (int pri = 0) 2125aioreq_pri (int pri = NO_INIT)
1702 PROTOTYPE: ;$
1703 CODE: 2126 CODE:
1704 RETVAL = next_pri - PRI_BIAS; 2127 RETVAL = next_pri;
1705 if (items > 0) 2128 if (items > 0)
1706 { 2129 {
1707 if (pri < PRI_MIN) pri = PRI_MIN; 2130 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1708 if (pri > PRI_MAX) pri = PRI_MAX; 2131 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1709 next_pri = pri + PRI_BIAS; 2132 next_pri = pri;
1710 } 2133 }
1711 OUTPUT: 2134 OUTPUT:
1712 RETVAL 2135 RETVAL
1713 2136
1714void 2137void
1715aioreq_nice (int nice = 0) 2138aioreq_nice (int nice = 0)
1716 CODE: 2139 CODE:
1717 nice = next_pri - nice; 2140 nice = next_pri - nice;
1718 if (nice < PRI_MIN) nice = PRI_MIN; 2141 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1719 if (nice > PRI_MAX) nice = PRI_MAX; 2142 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1720 next_pri = nice + PRI_BIAS; 2143 next_pri = nice;
1721 2144
1722void 2145void
1723flush () 2146flush ()
1724 PROTOTYPE:
1725 CODE: 2147 CODE:
1726 while (nreqs) 2148 while (eio_nreqs ())
1727 { 2149 {
1728 poll_wait (); 2150 poll_wait ();
1729 poll_cb (); 2151 poll_cb ();
1730 } 2152 }
1731 2153
1732int 2154int
1733poll() 2155poll ()
1734 PROTOTYPE:
1735 CODE: 2156 CODE:
1736 poll_wait (); 2157 poll_wait ();
1737 RETVAL = poll_cb (); 2158 RETVAL = poll_cb ();
1738 OUTPUT: 2159 OUTPUT:
1739 RETVAL 2160 RETVAL
1740 2161
1741int 2162int
1742poll_fileno() 2163poll_fileno ()
1743 PROTOTYPE:
1744 CODE: 2164 CODE:
1745 RETVAL = respipe [0]; 2165 RETVAL = s_epipe_fd (&respipe);
1746 OUTPUT: 2166 OUTPUT:
1747 RETVAL 2167 RETVAL
1748 2168
1749int 2169int
1750poll_cb(...) 2170poll_cb (...)
1751 PROTOTYPE: 2171 PROTOTYPE:
1752 CODE: 2172 CODE:
1753 RETVAL = poll_cb (); 2173 RETVAL = poll_cb ();
1754 OUTPUT: 2174 OUTPUT:
1755 RETVAL 2175 RETVAL
1756 2176
1757void 2177void
1758poll_wait() 2178poll_wait ()
2179 CODE:
2180 poll_wait ();
2181
2182int
2183nreqs ()
2184 CODE:
2185 RETVAL = eio_nreqs ();
2186 OUTPUT:
2187 RETVAL
2188
2189int
2190nready ()
2191 CODE:
2192 RETVAL = eio_nready ();
2193 OUTPUT:
2194 RETVAL
2195
2196int
2197npending ()
2198 CODE:
2199 RETVAL = eio_npending ();
2200 OUTPUT:
2201 RETVAL
2202
2203int
2204nthreads ()
2205 CODE:
2206 RETVAL = eio_nthreads ();
2207 OUTPUT:
2208 RETVAL
2209
2210int
2211fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2212 CODE:
2213 RETVAL = posix_fadvise (fh, offset, length, advice);
2214 OUTPUT:
2215 RETVAL
2216
2217IV
2218sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2219 CODE:
2220 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2221 OUTPUT:
2222 RETVAL
2223
2224void
2225mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2226 PPCODE:
2227 sv_clear_foreign (scalar);
2228{
2229 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2230 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2231 if (addr == (void *)-1)
2232 XSRETURN_NO;
2233
2234 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2235
2236 if (!(prot & PROT_WRITE))
2237 SvREADONLY_on (scalar);
2238
2239 XSRETURN_YES;
2240}
2241
2242void
2243munmap (SV *scalar)
2244 CODE:
2245 sv_clear_foreign (scalar);
2246
2247SV *
2248mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2249 CODE:
2250{
2251 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2252 void *new;
2253
2254 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2255 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2256
2257 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2258
2259 RETVAL = &PL_sv_no;
2260
2261 if (new != (void *)-1)
2262 {
2263 RETVAL = new == (void *)mg->mg_ptr
2264 ? newSVpvn ("0 but true", 10)
2265 : &PL_sv_yes;
2266
2267 mg->mg_ptr = (char *)new;
2268 mg->mg_obj = (SV *)new_length;
2269
2270 SvPVX (scalar) = mg->mg_ptr;
2271 SvCUR_set (scalar, new_length);
2272 }
2273}
2274 OUTPUT:
2275 RETVAL
2276
2277int
2278madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2279 ALIAS:
2280 mprotect = 1
2281 CODE:
2282{
2283 STRLEN svlen;
2284 void *addr = SvPVbyte (scalar, svlen);
2285 STRLEN len = SvUV (length);
2286
2287 if (offset < 0)
2288 offset += svlen;
2289
2290 if (offset < 0 || offset > svlen)
2291 croak ("offset outside of scalar");
2292
2293 if (!SvOK (length) || len + offset > svlen)
2294 len = svlen - offset;
2295
2296 addr = (void *)(((intptr_t)addr) + offset);
2297 eio_page_align (&addr, &len);
2298
2299 switch (ix)
2300 {
2301 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2302 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2303 }
2304}
2305 OUTPUT:
2306 RETVAL
2307
2308int
2309munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2310 CODE:
2311{
2312 STRLEN svlen;
2313 void *addr = SvPVbyte (scalar, svlen);
2314 size_t len = SvUV (length);
2315
2316 if (offset < 0)
2317 offset += svlen;
2318
2319 if (offset < 0 || offset > svlen)
2320 croak ("offset outside of scalar");
2321
2322 if (!SvOK (length) || len + offset > svlen)
2323 len = svlen - offset;
2324
2325 addr = (void *)(((intptr_t)addr) + offset);
2326 eio_page_align (&addr, &len);
2327#if _POSIX_MEMLOCK_RANGE
2328 RETVAL = munlock (addr, len);
2329#else
2330 RETVAL = EIO_ENOSYS ();
2331#endif
2332}
2333 OUTPUT:
2334 RETVAL
2335
2336int
2337mlockall (int flags)
2338 PROTOTYPE: $;
2339 CODE:
2340 RETVAL = eio_mlockall_sync (flags);
2341 OUTPUT:
2342 RETVAL
2343
2344int
2345munlockall ()
2346 CODE:
2347#if _POSIX_MEMLOCK
2348 munlockall ();
2349#else
2350 RETVAL = EIO_ENOSYS ();
2351#endif
2352 OUTPUT:
2353 RETVAL
2354
2355int
2356statx (SV8 *pathname, int flags, UV mask)
2357 CODE:
2358{
2359 /* undocumented, and might go away, and anyway, should use eio_statx */
2360 SV *wdsv = 0;
2361 SV *pathsv = 0;
2362 eio_wd wd = EIO_CWD;
2363 void *ptr;
2364 int res;
2365
2366 req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
2367 RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
2368
2369 SvREFCNT_dec (pathsv);
2370 SvREFCNT_dec (wdsv);
2371}
2372 OUTPUT:
2373 RETVAL
2374
2375U32
2376stx_mode ()
1759 PROTOTYPE: 2377 PROTOTYPE:
1760 CODE: 2378 CODE:
1761 poll_wait (); 2379#if HAVE_STATX
2380 RETVAL = stx.stx_mode;
2381#else
2382 XSRETURN_UNDEF;
2383#endif
2384 OUTPUT:
2385 RETVAL
1762 2386
2387#define STATX_OFFSET_mask statx_offsetof (stx_mask)
2388#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
2389#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
2390#define STATX_OFFSET_uid statx_offsetof (stx_uid)
2391#define STATX_OFFSET_gid statx_offsetof (stx_gid)
2392#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
2393#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
2394#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
2395#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
2396#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
2397#define STATX_OFFSET_ino statx_offsetof (stx_ino)
2398#define STATX_OFFSET_size statx_offsetof (stx_size)
2399#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
2400#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
2401#define STATX_OFFSET_atime statx_offsetof (stx_atime)
2402#define STATX_OFFSET_btime statx_offsetof (stx_btime)
2403#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
2404#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
2405
2406U32
2407stx_mask ()
2408 PROTOTYPE:
2409 ALIAS:
2410 stx_mask = STATX_OFFSET_mask
2411 stx_blksize = STATX_OFFSET_blksize
2412 stx_nlink = STATX_OFFSET_nlink
2413 stx_uid = STATX_OFFSET_uid
2414 stx_gid = STATX_OFFSET_gid
2415 stx_rdev_major = STATX_OFFSET_rdev_major
2416 stx_rdev_minor = STATX_OFFSET_rdev_minor
2417 stx_dev_major = STATX_OFFSET_dev_major
2418 stx_dev_minor = STATX_OFFSET_dev_minor
2419 CODE:
2420#if HAVE_STATX
2421 RETVAL = *(__u32 *)((char *)&stx + ix);
2422#else
2423 XSRETURN_UNDEF;
2424#endif
2425 OUTPUT:
2426 RETVAL
2427
2428VAL64
2429stx_attributes ()
2430 PROTOTYPE:
2431 ALIAS:
2432 stx_attributes = STATX_OFFSET_attributes
2433 stx_ino = STATX_OFFSET_ino
2434 stx_size = STATX_OFFSET_size
2435 stx_blocks = STATX_OFFSET_blocks
2436 stx_attributes_mask = STATX_OFFSET_attributes_mask
2437 CODE:
2438#if HAVE_STATX
2439 RETVAL = *(__u64 *)((char *)&stx + ix);
2440#else
2441 XSRETURN_UNDEF;
2442#endif
2443 OUTPUT:
2444 RETVAL
2445
2446NV
2447stx_atime ()
2448 PROTOTYPE:
2449 ALIAS:
2450 stx_atime = STATX_OFFSET_atime
2451 stx_btime = STATX_OFFSET_btime
2452 stx_ctime = STATX_OFFSET_ctime
2453 stx_mtime = STATX_OFFSET_mtime
2454 CODE:
2455#if HAVE_STATX
2456 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2457 RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
2458#else
2459 XSRETURN_UNDEF;
2460#endif
2461 OUTPUT:
2462 RETVAL
2463
2464VAL64
2465stx_atimesec ()
2466 PROTOTYPE:
2467 ALIAS:
2468 stx_atimesec = STATX_OFFSET_atime
2469 stx_btimesec = STATX_OFFSET_btime
2470 stx_ctimesec = STATX_OFFSET_ctime
2471 stx_mtimesec = STATX_OFFSET_mtime
2472 CODE:
2473#if HAVE_STATX
2474 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2475 RETVAL = ts->tv_sec;
2476#else
2477 XSRETURN_UNDEF;
2478#endif
2479 OUTPUT:
2480 RETVAL
2481
2482U32
2483stx_atimensec ()
2484 PROTOTYPE:
2485 ALIAS:
2486 stx_atimensec = STATX_OFFSET_atime
2487 stx_btimensec = STATX_OFFSET_btime
2488 stx_ctimensec = STATX_OFFSET_ctime
2489 stx_mtimensec = STATX_OFFSET_mtime
2490 CODE:
2491#if HAVE_STATX
2492 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2493 RETVAL = ts->tv_nsec;
2494#else
2495 RETVAL = 0;
2496#endif
2497 OUTPUT:
2498 RETVAL
2499
1763void 2500void
1764setsig (int signum = SIGIO) 2501accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
2502 PPCODE:
2503{
2504 SV *retval;
2505#if HAVE_ACCEPT4
2506 socklen_t salen_ = salen ? salen + 1 : 0;
2507
2508 if (salen)
2509 {
2510 sv_upgrade (sockaddr, SVt_PV);
2511 sv_grow (sockaddr, salen_);
2512 }
2513
2514 int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
2515
2516 retval = newmortalFH (res, O_RDWR);
2517
2518 if (res >= 0 && salen > 0)
2519 {
2520 if (salen_ > salen + 1)
2521 salen_ = salen + 1;
2522
2523 SvPOK_only (sockaddr);
2524 SvCUR_set (sockaddr, salen_);
2525 }
2526#else
2527 errno = ENOSYS;
2528 retval = &PL_sv_undef;
2529#endif
2530 XPUSHs (retval);
2531}
2532
2533ssize_t
2534splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2535 CODE:
2536{
2537#if HAVE_LINUX_SPLICE
2538 loff_t off_in_, off_out_;
2539 RETVAL = splice (
2540 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2541 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2542 length, flags
2543 );
2544#else
2545 RETVAL = EIO_ENOSYS ();
2546#endif
2547}
2548 OUTPUT:
2549 RETVAL
2550
2551ssize_t
2552tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2553 CODE:
2554#if HAVE_LINUX_SPLICE
2555 RETVAL = tee (rfh, wfh, length, flags);
2556#else
2557 RETVAL = EIO_ENOSYS ();
2558#endif
2559 OUTPUT:
2560 RETVAL
2561
2562int
2563pipesize (aio_rfd rfh, int new_size = -1)
2564 PROTOTYPE: $;$
2565 CODE:
2566#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2567 if (new_size >= 0)
2568 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2569 else
2570 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2571#else
2572 errno = ENOSYS;
2573 RETVAL = -1;
2574#endif
2575 OUTPUT:
2576 RETVAL
2577
2578void
2579pipe2 (int flags = 0)
1765 PROTOTYPE: ;$ 2580 PROTOTYPE: ;$
1766 CODE:
1767{
1768 if (block_sig_level)
1769 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1770
1771 LOCK (reslock);
1772 main_tid = pthread_self ();
1773 main_sig = signum;
1774 UNLOCK (reslock);
1775
1776 if (main_sig && npending)
1777 pthread_kill (main_tid, main_sig);
1778}
1779
1780void
1781aio_block (SV *cb)
1782 PROTOTYPE: &
1783 PPCODE: 2581 PPCODE:
1784{ 2582{
1785 int count; 2583 int fd[2];
2584 int res;
1786 2585
1787 block_sig (); 2586 if (flags)
1788 PUSHMARK (SP); 2587#if HAVE_PIPE2
1789 PUTBACK; 2588 res = pipe2 (fd, flags);
1790 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL); 2589#else
1791 SPAGAIN; 2590 res = (errno = ENOSYS, -1);
1792 unblock_sig (); 2591#endif
2592 else
2593 res = pipe (fd);
1793 2594
1794 if (SvTRUE (ERRSV)) 2595 if (!res)
1795 croak (0); 2596 {
1796 2597 EXTEND (SP, 2);
1797 XSRETURN (count); 2598 PUSHs (newmortalFH (fd[0], O_RDONLY));
2599 PUSHs (newmortalFH (fd[1], O_WRONLY));
2600 }
1798} 2601}
1799 2602
1800int 2603void
1801nreqs() 2604eventfd (unsigned int initval = 0, int flags = 0)
1802 PROTOTYPE: 2605 PPCODE:
2606{
2607 int fd;
2608#if HAVE_EVENTFD
2609 fd = eventfd (initval, flags);
2610#else
2611 fd = (errno = ENOSYS, -1);
2612#endif
2613
2614 XPUSHs (newmortalFH (fd, O_RDWR));
2615}
2616
2617void
2618timerfd_create (int clockid, int flags = 0)
2619 PPCODE:
2620{
2621 int fd;
2622#if HAVE_TIMERFD
2623 fd = timerfd_create (clockid, flags);
2624#else
2625 fd = (errno = ENOSYS, -1);
2626#endif
2627
2628 XPUSHs (newmortalFH (fd, O_RDWR));
2629}
2630
2631void
2632timerfd_settime (SV *fh, int flags, NV interval, NV value)
2633 PPCODE:
2634{
2635 int fd = s_fileno_croak (fh, 0);
2636#if HAVE_TIMERFD
2637 int res;
2638 struct itimerspec its, ots;
2639
2640 ts_set (&its.it_interval, interval);
2641 ts_set (&its.it_value , value);
2642 res = timerfd_settime (fd, flags, &its, &ots);
2643
2644 if (!res)
2645 {
2646 EXTEND (SP, 2);
2647 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2648 PUSHs (newSVnv (ts_get (&ots.it_value)));
2649 }
2650#else
2651 errno = ENOSYS;
2652#endif
2653}
2654
2655void
2656timerfd_gettime (SV *fh)
2657 PPCODE:
2658{
2659 int fd = s_fileno_croak (fh, 0);
2660#if HAVE_TIMERFD
2661 int res;
2662 struct itimerspec ots;
2663 res = timerfd_gettime (fd, &ots);
2664
2665 if (!res)
2666 {
2667 EXTEND (SP, 2);
2668 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2669 PUSHs (newSVnv (ts_get (&ots.it_value)));
2670 }
2671#else
2672 errno = ENOSYS;
2673#endif
2674}
2675
2676void
2677memfd_create (SV8 *pathname, int flags = 0)
2678 PPCODE:
2679{
2680 int fd;
2681#if HAVE_MEMFD_CREATE
2682 fd = memfd_create (SvPVbyte_nolen (pathname), flags);
2683#else
2684 fd = (errno = ENOSYS, -1);
2685#endif
2686
2687 XPUSHs (newmortalFH (fd, O_RDWR));
2688}
2689
2690UV
2691get_fdlimit ()
1803 CODE: 2692 CODE:
1804 RETVAL = nreqs; 2693#if HAVE_RLIMITS
2694 struct rlimit rl;
2695 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2696 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2697#endif
2698 XSRETURN_UNDEF;
1805 OUTPUT: 2699 OUTPUT:
1806 RETVAL 2700 RETVAL
1807 2701
1808int 2702void
1809nready() 2703min_fdlimit (UV limit = 0x7fffffffU)
1810 PROTOTYPE:
1811 CODE: 2704 CODE:
1812 RETVAL = get_nready (); 2705{
1813 OUTPUT: 2706#if HAVE_RLIMITS
1814 RETVAL 2707 struct rlimit rl;
2708 rlim_t orig_rlim_max;
2709 UV bit;
1815 2710
1816int 2711 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
1817npending() 2712 goto fail;
1818 PROTOTYPE: 2713
2714 if (rl.rlim_cur == RLIM_INFINITY)
2715 XSRETURN_YES;
2716
2717 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2718
2719 if (rl.rlim_cur < limit)
2720 {
2721 rl.rlim_cur = limit;
2722
2723 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2724 rl.rlim_max = rl.rlim_cur;
2725 }
2726
2727 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2728 XSRETURN_YES;
2729
2730 if (errno == EPERM)
2731 {
2732 /* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2733 /* our limit overflows a system-wide limit */
2734 /* try an adaptive algorithm, but do not lower the hardlimit */
2735 rl.rlim_max = 0;
2736 for (bit = 0x40000000U; bit; bit >>= 1)
2737 {
2738 rl.rlim_max |= bit;
2739 rl.rlim_cur = rl.rlim_max;
2740
2741 /* never decrease the hard limit */
2742 if (rl.rlim_max < orig_rlim_max)
2743 break;
2744
2745 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2746 rl.rlim_max &= ~bit; /* too high, remove bit again */
2747 }
2748
2749 /* now, raise the soft limit to the max permitted */
2750 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2751 {
2752 rl.rlim_cur = rl.rlim_max;
2753 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2754 errno = EPERM;
2755 }
2756 }
2757#endif
2758 fail:
2759 XSRETURN_UNDEF;
2760}
2761
2762void _on_next_submit (SV *cb)
1819 CODE: 2763 CODE:
1820 RETVAL = get_npending (); 2764 SvREFCNT_dec (on_next_submit);
1821 OUTPUT: 2765 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1822 RETVAL
1823 2766
1824int 2767PROTOTYPES: DISABLE
1825nthreads() 2768
1826 PROTOTYPE: 2769MODULE = IO::AIO PACKAGE = IO::AIO::WD
2770
2771BOOT:
2772{
2773 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2774 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2775}
2776
2777void
2778DESTROY (SV *self)
1827 CODE: 2779 CODE:
1828 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2780{
1829 RETVAL = started; 2781 aio_wd wd = SvAIO_WD (self);
1830 if (WORDACCESS_UNSAFE) UNLOCK (wrklock); 2782#if HAVE_AT
1831 OUTPUT: 2783 {
1832 RETVAL 2784 SV *callback = &PL_sv_undef;
1833 2785 dREQ; /* clobbers next_pri :/ */
1834PROTOTYPES: DISABLE 2786 next_pri = req->pri; /* restore next_pri */
2787 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2788 req->type = EIO_WD_CLOSE;
2789 req->wd = wd;
2790 REQ_SEND;
2791 }
2792#else
2793 eio_wd_close_sync (wd);
2794#endif
2795}
1835 2796
1836MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2797MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1837 2798
1838void 2799void
1839cancel (aio_req_ornot req) 2800cancel (aio_req_ornot req)
1840 CODE: 2801 CODE:
1841 req_cancel (req); 2802 eio_cancel (req);
1842 2803
1843void 2804void
1844cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2805cb (aio_req_ornot req, SV *callback = NO_INIT)
1845 CODE: 2806 PPCODE:
2807{
2808 if (GIMME_V != G_VOID)
2809 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2810
2811 if (items > 1)
2812 {
2813 SV *cb_cv = get_cb (callback);
2814
1846 SvREFCNT_dec (req->callback); 2815 SvREFCNT_dec (req->callback);
1847 req->callback = newSVsv (callback); 2816 req->callback = SvREFCNT_inc (cb_cv);
2817 }
2818}
1848 2819
1849MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2820MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1850 2821
1851void 2822void
1852add (aio_req grp, ...) 2823add (aio_req grp, ...)
1853 PPCODE: 2824 PPCODE:
1854{ 2825{
1855 int i; 2826 int i;
1856 aio_req req;
1857
1858 if (main_sig && !block_sig_level)
1859 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1860 2827
1861 if (grp->int1 == 2) 2828 if (grp->int1 == 2)
1862 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2829 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1863 2830
1864 for (i = 1; i < items; ++i ) 2831 for (i = 1; i < items; ++i )
1865 { 2832 {
2833 aio_req req;
2834
1866 if (GIMME_V != G_VOID) 2835 if (GIMME_V != G_VOID)
1867 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2836 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1868 2837
1869 req = SvAIO_REQ (ST (i)); 2838 req = SvAIO_REQ (ST (i));
1870 2839
1871 if (req) 2840 if (req)
1872 { 2841 eio_grp_add (grp, req);
1873 ++grp->size;
1874 req->grp = grp;
1875
1876 req->grp_prev = 0;
1877 req->grp_next = grp->grp_first;
1878
1879 if (grp->grp_first)
1880 grp->grp_first->grp_prev = req;
1881
1882 grp->grp_first = req;
1883 }
1884 } 2842 }
1885} 2843}
1886 2844
1887void 2845void
1888cancel_subs (aio_req_ornot req) 2846cancel_subs (aio_req_ornot req)
… …
1897 AV *av; 2855 AV *av;
1898 2856
1899 grp->errorno = errno; 2857 grp->errorno = errno;
1900 2858
1901 av = newAV (); 2859 av = newAV ();
2860 av_extend (av, items - 1);
1902 2861
1903 for (i = 1; i < items; ++i ) 2862 for (i = 1; i < items; ++i )
1904 av_push (av, newSVsv (ST (i))); 2863 av_push (av, newSVsv (ST (i)));
1905 2864
1906 SvREFCNT_dec (grp->sv1); 2865 SvREFCNT_dec (grp->sv1);
… …
1913 grp->errorno = errorno; 2872 grp->errorno = errorno;
1914 2873
1915void 2874void
1916limit (aio_req grp, int limit) 2875limit (aio_req grp, int limit)
1917 CODE: 2876 CODE:
1918 grp->int2 = limit; 2877 eio_grp_limit (grp, limit);
1919 aio_grp_feed (grp);
1920 2878
1921void 2879void
1922feed (aio_req grp, SV *callback=&PL_sv_undef) 2880feed (aio_req grp, SV *callback = &PL_sv_undef)
1923 CODE: 2881 CODE:
1924{ 2882{
1925 SvREFCNT_dec (grp->sv2); 2883 SvREFCNT_dec (grp->sv2);
1926 grp->sv2 = newSVsv (callback); 2884 grp->sv2 = newSVsv (callback);
2885 grp->feed = aio_grp_feed;
1927 2886
1928 if (grp->int2 <= 0) 2887 if (grp->int2 <= 0)
1929 grp->int2 = 2; 2888 grp->int2 = 2;
1930 2889
1931 aio_grp_feed (grp); 2890 eio_grp_limit (grp, grp->int2);
1932} 2891}
1933 2892

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