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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.85 by root, Sat Oct 28 23:32:29 2006 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 2018 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"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
27#include <limits.h> 16#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 17#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 18#include <sched.h>
32 19
33#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34# if __linux
35# include <sys/sendfile.h>
36# elif __freebsd
37# include <sys/socket.h>
38# include <sys/uio.h> 21# include <sys/mman.h>
39# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
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
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
40# include <sys/socket.h> 86 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
43# else 151# else
44# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 153# endif
46#endif 154#endif
47 155
48/* number of seconds after which idle threads exit */ 156/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 157/* also provides const_iv_ and const_niv_ macros for them */
158#include "def0.h"
50 159
51/* used for struct dirent, AIX doesn't provide it */ 160#ifndef makedev
52#ifndef NAME_MAX 161# define makedev(maj,min) (((maj) << 8) | (min))
53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
79#endif 165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
80 169
81/* buffer size for various temporary buffers */ 170#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
83 173
84#define dBUF \ 174/*****************************************************************************/
85 char *aio_buf; \ 175
86 LOCK (wrklock); \ 176#if !_POSIX_MAPPED_FILES
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 177# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
88 UNLOCK (wrklock); \ 178# define munmap(addr,length) EIO_ENOSYS ()
89 if (!aio_buf) \ 179#endif
180
181#if !_POSIX_MEMORY_PROTECTION
182# define mprotect(addr,len,prot) EIO_ENOSYS ()
183#endif
184
185#define FOREIGN_MAGIC PERL_MAGIC_ext
186
187static int ecb_cold
188mmap_free (pTHX_ SV *sv, MAGIC *mg)
189{
190 int old_errno = errno;
191 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
192 errno = old_errno;
193
194 mg->mg_obj = 0; /* just in case */
195
196 SvREADONLY_off (sv);
197
198 if (SvPVX (sv) != mg->mg_ptr)
199 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
200
201 SvCUR_set (sv, 0);
202 SvPVX (sv) = 0;
203 SvOK_off (sv);
204
90 return -1; 205 return 0;
206}
91 207
92enum { 208static MGVTBL mmap_vtbl = {
93 REQ_QUIT, 209 0, 0, 0, 0, mmap_free
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104}; 210};
105 211
106#define AIO_REQ_KLASS "IO::AIO::REQ" 212static int ecb_cold
107#define AIO_GRP_KLASS "IO::AIO::GRP" 213sysfree_free (pTHX_ SV *sv, MAGIC *mg)
108
109typedef struct aio_cb
110{ 214{
111 struct aio_cb *volatile next; 215 free (mg->mg_ptr);
216 mg->mg_obj = 0; /* just in case */
112 217
113 SV *data, *callback; 218 SvREADONLY_off (sv);
114 SV *fh, *fh2;
115 void *dataptr, *data2ptr;
116 Stat_t *statdata;
117 off_t offset;
118 size_t length;
119 ssize_t result;
120 219
121 STRLEN dataoffset; 220 if (SvPVX (sv) != mg->mg_ptr)
122 int type; 221 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
123 int fd, fd2;
124 int errorno;
125 mode_t mode; /* open */
126 222
127 unsigned char flags; 223 SvCUR_set (sv, 0);
128 unsigned char pri; 224 SvPVX (sv) = 0;
225 SvOK_off (sv);
129 226
130 SV *self; /* the perl counterpart of this request, if any */ 227 return 0;
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 228}
132} aio_cb;
133 229
134enum { 230static MGVTBL sysfree_vtbl = {
135 FLAG_CANCELLED = 0x01, 231 0, 0, 0, 0, sysfree_free
136}; 232};
137 233
138typedef aio_cb *aio_req; 234/*****************************************************************************/
139typedef aio_cb *aio_req_ornot;
140 235
141enum { 236/* helper: set scalar to foreign ptr with custom free */
142 PRI_MIN = -4, 237static void
143 PRI_MAX = 4, 238sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
144
145 DEFAULT_PRI = 0,
146 PRI_BIAS = -PRI_MIN,
147 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148};
149
150#define AIO_TICKS ((1000000 + 1023) >> 10)
151
152static unsigned int max_poll_time = 0;
153static unsigned int max_poll_reqs = 0;
154
155/* calculcate time difference in ~1/AIO_TICKS of a second */
156static int tvdiff (struct timeval *tv1, struct timeval *tv2)
157{ 239{
158 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 240 sv_force_normal (sv);
159 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
160}
161 241
162static int next_pri = DEFAULT_PRI + PRI_BIAS; 242 /* we store the length in mg_obj, as namlen is I32 :/ */
243 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
244 ->mg_obj = (SV *)length;
163 245
164static unsigned int started, idle, wanted; 246 SvUPGRADE (sv, SVt_PV); /* nop... */
165 247
166#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 248 if (SvLEN (sv))
167# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 249 Safefree (SvPVX (sv));
168#else
169# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
170#endif
171 250
172#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 251 SvPVX (sv) = (char *)addr;
173#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 252 SvCUR_set (sv, length);
253 SvLEN_set (sv, 0);
254 SvPOK_only (sv);
255}
174 256
175/* worker threads management */ 257static void
176static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 258sv_clear_foreign (SV *sv)
177
178typedef struct worker {
179 /* locked by wrklock */
180 struct worker *prev, *next;
181
182 pthread_t tid;
183
184 /* locked by reslock, reqlock or wrklock */
185 aio_req req; /* currently processed request */
186 void *dbuf;
187 DIR *dirp;
188} worker;
189
190static worker wrk_first = { &wrk_first, &wrk_first, 0 };
191
192static void worker_clear (worker *wrk)
193{ 259{
194 if (wrk->dirp) 260 /* todo: iterate over magic and only free ours, but of course */
261 /* the perl5porters will call that (correct) behaviour buggy */
262 sv_unmagic (sv, FOREIGN_MAGIC);
263}
264
265/*****************************************************************************/
266
267static void
268fiemap (eio_req *req)
269{
270 req->result = -1;
271
272#if HAVE_FIEMAP
273 /* assume some c99 */
274 struct fiemap *fiemap = 0;
275 size_t end_offset;
276 int count = req->int3;
277
278 req->flags |= EIO_FLAG_PTR1_FREE;
279
280 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
281 /* increase in 3.5kb steps */
282 if (count < 0)
283 count = 8;
284
285 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
286 errno = ENOMEM;
287 if (!fiemap)
288 return;
289
290 req->ptr1 = fiemap;
291
292 fiemap->fm_start = req->offs;
293 fiemap->fm_length = req->size;
294 fiemap->fm_flags = req->int2;
295 fiemap->fm_extent_count = count;
296
297 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
298 return;
299
300 if (req->int3 >= 0 /* not autosizing */
301 || !fiemap->fm_mapped_extents /* no more extents */
302 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
303 goto done;
304
305 /* else we have to loop -
306 * it would be tempting (actually I tried that first) to just query the
307 * number of extents needed, but linux often feels like not returning all
308 * extents, without telling us it left any out. this complicates
309 * this quite a bit.
310 */
311
312 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
313
314 for (;;)
195 { 315 {
196 closedir (wrk->dirp); 316 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
197 wrk->dirp = 0; 317 char scratch[3072];
198 } 318 struct fiemap *incmap = (struct fiemap *)scratch;
199 319
200 if (wrk->dbuf) 320 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
201 { 321 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
202 free (wrk->dbuf); 322 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
203 wrk->dbuf = 0; 323 incmap->fm_flags = fiemap->fm_flags;
204 } 324 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
205}
206 325
207static void worker_free (worker *wrk) 326 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
208{
209 wrk->next->prev = wrk->prev;
210 wrk->prev->next = wrk->next;
211
212 free (wrk);
213}
214
215static volatile unsigned int nreqs, nready, npending;
216static volatile unsigned int max_idle = 4;
217static volatile unsigned int max_outstanding = 0xffffffff;
218static int respipe [2];
219
220static pthread_mutex_t reslock = AIO_MUTEX_INIT;
221static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
222static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
223
224#if WORDACCESS_UNSAFE
225
226static unsigned int get_nready ()
227{
228 unsigned int retval;
229
230 LOCK (reqlock);
231 retval = nready;
232 UNLOCK (reqlock);
233
234 return retval;
235}
236
237static unsigned int get_npending ()
238{
239 unsigned int retval;
240
241 LOCK (reslock);
242 retval = npending;
243 UNLOCK (reslock);
244
245 return retval;
246}
247
248static unsigned int get_nthreads ()
249{
250 unsigned int retval;
251
252 LOCK (wrklock);
253 retval = started;
254 UNLOCK (wrklock);
255
256 return retval;
257}
258
259#else
260
261# define get_nready() nready
262# define get_npending() npending
263# define get_nthreads() started
264
265#endif
266
267/*
268 * a somewhat faster data structure might be nice, but
269 * with 8 priorities this actually needs <20 insns
270 * per shift, the most expensive operation.
271 */
272typedef struct {
273 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
274 int size;
275} reqq;
276
277static reqq req_queue;
278static reqq res_queue;
279
280int reqq_push (reqq *q, aio_req req)
281{
282 int pri = req->pri;
283 req->next = 0;
284
285 if (q->qe[pri])
286 {
287 q->qe[pri]->next = req;
288 q->qe[pri] = req;
289 }
290 else
291 q->qe[pri] = q->qs[pri] = req;
292
293 return q->size++;
294}
295
296aio_req reqq_shift (reqq *q)
297{
298 int pri;
299
300 if (!q->size)
301 return 0; 327 return;
302 328
303 --q->size; 329 if (!incmap->fm_mapped_extents)
330 goto done;
304 331
305 for (pri = NUM_PRI; pri--; ) 332 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
306 { 333 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
307 aio_req req = q->qs[pri]; 334 errno = ENOMEM;
308
309 if (req) 335 if (!fiemap)
336 return;
337
338 req->ptr1 = fiemap;
339
340 for (count = 0; count < incmap->fm_mapped_extents; ++count)
310 { 341 {
311 if (!(q->qs[pri] = req->next)) 342 struct fiemap_extent *e = incmap->fm_extents + count;
312 q->qe[pri] = 0;
313 343
314 return req; 344 if (e->fe_logical + e->fe_length >= end_offset)
345 goto done;
346
347 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
348
349 if (e->fe_flags & FIEMAP_EXTENT_LAST)
350 goto done;
351
315 } 352 }
316 } 353 }
317 354
318 abort (); 355done:
319} 356 req->result = 0;
320 357
321static int poll_cb (); 358#else
322static void req_invoke (aio_req req); 359 errno = ENOSYS;
360#endif
361}
362
363/*****************************************************************************/
364
365enum {
366 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
367};
368
369typedef eio_req *aio_req;
370typedef eio_req *aio_req_ornot;
371typedef eio_wd aio_wd;
372
373static SV *on_next_submit;
374static int next_pri = EIO_PRI_DEFAULT;
375static int max_outstanding;
376
377static s_epipe respipe;
378
323static void req_free (aio_req req); 379static void req_destroy (aio_req req);
324static void req_cancel (aio_req req); 380static void req_cancel (aio_req req);
325 381
382static void
383want_poll (void)
384{
385 /* write a dummy byte to the pipe so fh becomes ready */
386 s_epipe_signal (&respipe);
387}
388
389static void
390done_poll (void)
391{
392 /* read any signals sent by the worker threads */
393 s_epipe_drain (&respipe);
394}
395
326/* must be called at most once */ 396/* must be called at most once */
327static SV *req_sv (aio_req req, const char *klass) 397static SV *
398req_sv (aio_req req, HV *stash)
328{ 399{
329 if (!req->self) 400 if (!req->self)
330 { 401 {
331 req->self = (SV *)newHV (); 402 req->self = (SV *)newHV ();
332 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 403 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
333 } 404 }
334 405
335 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 406 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
336} 407}
337 408
338static aio_req SvAIO_REQ (SV *sv) 409static SV *
410newSVaio_wd (aio_wd wd)
411{
412 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
413}
414
415static aio_req
416SvAIO_REQ (SV *sv)
339{ 417{
340 MAGIC *mg; 418 MAGIC *mg;
341 419
342 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 420 if (!SvROK (sv)
421 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
422 || (SvSTASH (SvRV (sv)) != aio_grp_stash
423 && SvSTASH (SvRV (sv)) != aio_req_stash
424 && !sv_derived_from (sv, "IO::AIO::REQ")))
343 croak ("object of class " AIO_REQ_KLASS " expected"); 425 croak ("object of class IO::AIO::REQ expected");
344 426
345 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 427 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
346 428
347 return mg ? (aio_req)mg->mg_ptr : 0; 429 return mg ? (aio_req)mg->mg_ptr : 0;
348} 430}
349 431
432static aio_wd
433SvAIO_WD (SV *sv)
434{
435 if (!SvROK (sv)
436 || SvTYPE (SvRV (sv)) != SVt_PVMG
437 || SvSTASH (SvRV (sv)) != aio_wd_stash)
438 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
439
440 return (aio_wd)(long)SvIVX (SvRV (sv));
441}
442
443static SV *
444newmortalFH (int fd, int flags)
445{
446 if (fd < 0)
447 return &PL_sv_undef;
448
449 GV *gv = (GV *)sv_newmortal ();
450 char sym[64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
454 gv_init (gv, aio_stash, sym, symlen, 0);
455
456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 fd
462 );
463
464 return do_open (gv, sym, symlen, 0, 0, 0, 0)
465 ? (SV *)gv : &PL_sv_undef;
466}
467
468static void
350static void aio_grp_feed (aio_req grp) 469aio_grp_feed (aio_req grp)
351{ 470{
352 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 471 if (grp->sv2 && SvOK (grp->sv2))
353 { 472 {
354 int old_len = grp->length;
355
356 if (grp->fh2 && SvOK (grp->fh2))
357 {
358 dSP; 473 dSP;
359 474
360 ENTER; 475 ENTER;
361 SAVETMPS; 476 SAVETMPS;
362 PUSHMARK (SP); 477 PUSHMARK (SP);
363 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 478 XPUSHs (req_sv (grp, aio_grp_stash));
364 PUTBACK; 479 PUTBACK;
365 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 480 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
366 SPAGAIN; 481 SPAGAIN;
367 FREETMPS; 482 FREETMPS;
368 LEAVE; 483 LEAVE;
369 }
370
371 /* stop if no progress has been made */
372 if (old_len == grp->length)
373 {
374 SvREFCNT_dec (grp->fh2);
375 grp->fh2 = 0;
376 break;
377 }
378 } 484 }
379} 485}
380 486
381static void aio_grp_dec (aio_req grp) 487static void
488req_submit (eio_req *req)
382{ 489{
383 --grp->length; 490 eio_submit (req);
384 491
385 /* call feeder, if applicable */ 492 if (expect_false (on_next_submit))
386 aio_grp_feed (grp);
387
388 /* finish, if done */
389 if (!grp->length && grp->fd)
390 { 493 {
391 req_invoke (grp); 494 dSP;
392 req_free (grp); 495 SV *cb = sv_2mortal (on_next_submit);
496
497 on_next_submit = 0;
498
499 PUSHMARK (SP);
500 PUTBACK;
501 call_sv (cb, G_DISCARD | G_EVAL);
393 } 502 }
394} 503}
395 504
505static int
396static void req_invoke (aio_req req) 506req_invoke (eio_req *req)
397{ 507{
398 dSP; 508 if (req->flags & FLAG_SV2_RO_OFF)
509 SvREADONLY_off (req->sv2);
399 510
400 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 511 if (!EIO_CANCELLED (req) && req->callback)
401 { 512 {
513 dSP;
514 static SV *sv_result_cache; /* caches the result integer SV */
515 SV *sv_result;
516
402 ENTER; 517 ENTER;
403 SAVETMPS; 518 SAVETMPS;
404 PUSHMARK (SP); 519 PUSHMARK (SP);
405 EXTEND (SP, 1); 520 EXTEND (SP, 1);
406 521
522 /* do not recreate the result IV from scratch each time */
523 if (expect_true (sv_result_cache))
524 {
525 sv_result = sv_result_cache; sv_result_cache = 0;
526 SvIV_set (sv_result, req->result);
527 SvIOK_only (sv_result);
528 }
529 else
530 {
531 sv_result = newSViv (req->result);
532 SvREADONLY_on (sv_result);
533 }
534
407 switch (req->type) 535 switch (req->type)
408 { 536 {
537 case EIO_WD_OPEN:
538 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
539 break;
540
409 case REQ_READDIR: 541 case EIO_READDIR:
410 { 542 {
411 SV *rv = &PL_sv_undef; 543 SV *rv = &PL_sv_undef;
412 544
413 if (req->result >= 0) 545 if (req->result >= 0)
414 { 546 {
415 int i; 547 int i;
416 char *buf = req->data2ptr; 548 char *names = (char *)req->ptr2;
549 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
417 AV *av = newAV (); 550 AV *av = newAV ();
418 551
419 av_extend (av, req->result - 1); 552 av_extend (av, req->result - 1);
420 553
421 for (i = 0; i < req->result; ++i) 554 for (i = 0; i < req->result; ++i)
422 { 555 {
423 SV *sv = newSVpv (buf, 0); 556 if (req->int1 & EIO_READDIR_DENTS)
557 {
558 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
424 559
560 if (req->int1 & EIO_READDIR_CUSTOM2)
561 {
562 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
563 AV *avent = newAV ();
564
565 av_extend (avent, 2);
566
567 if (!sv_type [ent->type])
568 {
569 sv_type [ent->type] = newSViv (ent->type);
570 SvREADONLY_on (sv_type [ent->type]);
571 }
572
573 av_store (avent, 0, namesv);
574 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
575 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
576
577 av_store (av, i, newRV_noinc ((SV *)avent));
578 }
579 else
425 av_store (av, i, sv); 580 av_store (av, i, namesv);
581
582 ++ent;
583 }
584 else
585 {
586 SV *name = newSVpv (names, 0);
587 av_store (av, i, name);
426 buf += SvCUR (sv) + 1; 588 names += SvCUR (name) + 1;
589 }
427 } 590 }
428 591
429 rv = sv_2mortal (newRV_noinc ((SV *)av)); 592 rv = sv_2mortal (newRV_noinc ((SV *)av));
430 } 593 }
431 594
432 PUSHs (rv); 595 PUSHs (rv);
596
597 if (req->int1 & EIO_READDIR_CUSTOM1)
598 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
433 } 599 }
434 break; 600 break;
435 601
436 case REQ_OPEN: 602 case EIO_OPEN:
603 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
604 break;
605
606 case EIO_STATVFS:
607 case EIO_FSTATVFS:
437 { 608 {
438 /* convert fd to fh */ 609 SV *rv = &PL_sv_undef;
439 SV *fh; 610
611#ifndef _WIN32
612 if (req->result >= 0)
613 {
614 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
615 HV *hv = newHV ();
616 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
617 * chooses to make it a struct.
618 */
619 unsigned long fsid = 0;
620 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
440 621
441 PUSHs (sv_2mortal (newSViv (req->result))); 622 rv = sv_2mortal (newRV_noinc ((SV *)hv));
442 PUTBACK;
443 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
444 SPAGAIN;
445 623
446 fh = SvREFCNT_inc (POPs); 624 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
625 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
626 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
627 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
628 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
629 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
630 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
631 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
632 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
633 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
634 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
635 }
636#endif
447 637
448 PUSHMARK (SP); 638 PUSHs (rv);
449 XPUSHs (sv_2mortal (fh));
450 } 639 }
640
451 break; 641 break;
452 642
453 case REQ_GROUP: 643 case EIO_GROUP:
454 req->fd = 2; /* mark group as finished */ 644 req->int1 = 2; /* mark group as finished */
455 645
456 if (req->data) 646 if (req->sv1)
457 { 647 {
458 int i; 648 int i;
459 AV *av = (AV *)req->data; 649 AV *av = (AV *)req->sv1;
460 650
461 EXTEND (SP, AvFILL (av) + 1); 651 EXTEND (SP, AvFILL (av) + 1);
462 for (i = 0; i <= AvFILL (av); ++i) 652 for (i = 0; i <= AvFILL (av); ++i)
463 PUSHs (*av_fetch (av, i, 0)); 653 PUSHs (*av_fetch (av, i, 0));
464 } 654 }
465 break; 655 break;
466 656
467 case REQ_NOP: 657 case EIO_NOP:
468 case REQ_BUSY: 658 case EIO_BUSY:
469 break; 659 break;
470 660
661 case EIO_READLINK:
662 case EIO_REALPATH:
663 if (req->result > 0)
664 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
665 break;
666
667 case EIO_STAT:
668 case EIO_LSTAT:
669 case EIO_FSTAT:
670 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
671
672 if (!(PL_laststatval = req->result))
673 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
674 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
675
676 PUSHs (sv_result);
677 break;
678
679 case EIO_SEEK:
680 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
681 break;
682
683 case EIO_READ:
684 {
685 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
686 *SvEND (req->sv2) = 0;
687 SvPOK_only (req->sv2);
688 SvSETMAGIC (req->sv2);
689 PUSHs (sv_result);
690 }
691 break;
692
693 case EIO_SLURP:
694 {
695 if (req->result >= 0)
696 {
697 /* if length was originally not known, we steal the malloc'ed memory */
698 if (req->flags & EIO_FLAG_PTR2_FREE)
699 {
700 req->flags &= ~EIO_FLAG_PTR2_FREE;
701 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
702 }
703 else
704 {
705 SvCUR_set (req->sv2, req->result);
706 *SvEND (req->sv2) = 0;
707 SvPOK_only (req->sv2);
708 }
709
710 SvSETMAGIC (req->sv2);
711 }
712
713 PUSHs (sv_result);
714 }
715 break;
716
717 case EIO_CUSTOM:
718 if (req->feed == fiemap)
719 {
720#if HAVE_FIEMAP
721 if (!req->result)
722 {
723 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
724
725 if (fiemap->fm_extent_count)
726 {
727 AV *av = newAV ();
728 int i;
729
730 while (fiemap->fm_mapped_extents)
731 {
732 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
733 AV *ext_av = newAV ();
734
735 av_store (ext_av, 3, newSVuv (extent->fe_flags));
736 av_store (ext_av, 2, newSVval64 (extent->fe_length));
737 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
738 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
739
740 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
741 }
742
743 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
744 }
745 else
746 {
747 SvIV_set (sv_result, fiemap->fm_mapped_extents);
748 PUSHs (sv_result);
749 }
750 }
751#endif
752 }
753 else
754 PUSHs (sv_result);
755 break;
756
757 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
758 if (req->result > 0)
759 SvIV_set (sv_result, 0);
760 /* FALLTHROUGH */
761
471 default: 762 default:
472 PUSHs (sv_2mortal (newSViv (req->result))); 763 PUSHs (sv_result);
473 break; 764 break;
474 } 765 }
475 766
476 errno = req->errorno; 767 errno = req->errorno;
477 768
478 PUTBACK; 769 PUTBACK;
479 call_sv (req->callback, G_VOID | G_EVAL); 770 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
480 SPAGAIN; 771 SPAGAIN;
772
773 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
774 SvREFCNT_dec (sv_result);
775 else
776 sv_result_cache = sv_result;
481 777
482 FREETMPS; 778 FREETMPS;
483 LEAVE; 779 LEAVE;
780
781 PUTBACK;
484 } 782 }
485 783
486 if (req->grp) 784 return !!SvTRUE (ERRSV);
487 {
488 aio_req grp = req->grp;
489
490 /* unlink request */
491 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
492 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
493
494 if (grp->grp_first == req)
495 grp->grp_first = req->grp_next;
496
497 aio_grp_dec (grp);
498 }
499
500 if (SvTRUE (ERRSV))
501 {
502 req_free (req);
503 croak (0);
504 }
505} 785}
506 786
507static void req_free (aio_req req) 787static void
788req_destroy (aio_req req)
508{ 789{
509 if (req->self) 790 if (req->self)
510 { 791 {
511 sv_unmagic (req->self, PERL_MAGIC_ext); 792 sv_unmagic (req->self, PERL_MAGIC_ext);
512 SvREFCNT_dec (req->self); 793 SvREFCNT_dec (req->self);
513 } 794 }
514 795
515 SvREFCNT_dec (req->data);
516 SvREFCNT_dec (req->fh); 796 SvREFCNT_dec (req->sv1);
517 SvREFCNT_dec (req->fh2); 797 SvREFCNT_dec (req->sv2);
798 SvREFCNT_dec (req->sv3);
799 SvREFCNT_dec (req->sv4);
518 SvREFCNT_dec (req->callback); 800 SvREFCNT_dec (req->callback);
519 Safefree (req->statdata);
520 801
521 if (req->type == REQ_READDIR)
522 free (req->data2ptr);
523
524 Safefree (req); 802 free (req);
525} 803}
526 804
805static void
527static void req_cancel_subs (aio_req grp) 806req_cancel_subs (aio_req grp)
528{ 807{
529 aio_req sub;
530
531 if (grp->type != REQ_GROUP) 808 if (grp->type != EIO_GROUP)
532 return; 809 return;
533 810
534 SvREFCNT_dec (grp->fh2); 811 SvREFCNT_dec (grp->sv2);
535 grp->fh2 = 0; 812 grp->sv2 = 0;
536 813
537 for (sub = grp->grp_first; sub; sub = sub->grp_next) 814 eio_grp_cancel (grp);
538 req_cancel (sub);
539} 815}
540 816
541static void req_cancel (aio_req req) 817static void ecb_cold
818create_respipe (void)
542{ 819{
543 req->flags |= FLAG_CANCELLED; 820 if (s_epipe_renew (&respipe))
544 821 croak ("IO::AIO: unable to initialize result pipe");
545 req_cancel_subs (req);
546} 822}
547 823
548static void *aio_proc(void *arg); 824static void
549 825poll_wait (void)
550static void start_thread (void)
551{ 826{
552 sigset_t fullsigset, oldsigset;
553 pthread_attr_t attr;
554
555 worker *wrk = calloc (1, sizeof (worker));
556
557 if (!wrk)
558 croak ("unable to allocate worker thread data");
559
560 pthread_attr_init (&attr);
561 pthread_attr_setstacksize (&attr, STACKSIZE);
562 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
563#ifdef PTHREAD_SCOPE_PROCESS
564 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
565#endif
566
567 sigfillset (&fullsigset);
568
569 LOCK (wrklock);
570 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
571
572 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
573 {
574 wrk->prev = &wrk_first;
575 wrk->next = wrk_first.next;
576 wrk_first.next->prev = wrk;
577 wrk_first.next = wrk;
578 ++started;
579 }
580 else
581 free (wrk);
582
583 sigprocmask (SIG_SETMASK, &oldsigset, 0);
584 UNLOCK (wrklock);
585}
586
587static void maybe_start_thread ()
588{
589 if (get_nthreads () >= wanted)
590 return;
591
592 /* todo: maybe use idle here, but might be less exact */
593 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
594 return;
595
596 start_thread ();
597}
598
599static void req_send (aio_req req)
600{
601 ++nreqs;
602
603 LOCK (reqlock);
604 ++nready;
605 reqq_push (&req_queue, req);
606 pthread_cond_signal (&reqwait);
607 UNLOCK (reqlock);
608
609 maybe_start_thread ();
610}
611
612static void end_thread (void)
613{
614 aio_req req;
615
616 Newz (0, req, 1, aio_cb);
617
618 req->type = REQ_QUIT;
619 req->pri = PRI_MAX + PRI_BIAS;
620
621 LOCK (reqlock);
622 reqq_push (&req_queue, req);
623 pthread_cond_signal (&reqwait);
624 UNLOCK (reqlock);
625
626 LOCK (wrklock);
627 --started;
628 UNLOCK (wrklock);
629}
630
631static void set_max_idle (int nthreads)
632{
633 if (WORDACCESS_UNSAFE) LOCK (reqlock);
634 max_idle = nthreads <= 0 ? 1 : nthreads;
635 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
636}
637
638static void min_parallel (int nthreads)
639{
640 if (wanted < nthreads)
641 wanted = nthreads;
642}
643
644static void max_parallel (int nthreads)
645{
646 if (wanted > nthreads)
647 wanted = nthreads;
648
649 while (started > wanted)
650 end_thread ();
651}
652
653static void poll_wait ()
654{
655 fd_set rfd;
656
657 while (nreqs) 827 while (eio_nreqs ())
658 { 828 {
659 int size; 829 int size;
660 if (WORDACCESS_UNSAFE) LOCK (reslock); 830
831 X_LOCK (EIO_POOL->reslock);
661 size = res_queue.size; 832 size = EIO_POOL->res_queue.size;
662 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 833 X_UNLOCK (EIO_POOL->reslock);
663 834
664 if (size) 835 if (size)
665 return; 836 return;
666 837
667 maybe_start_thread (); 838 etp_maybe_start_thread (EIO_POOL);
668 839
669 FD_ZERO(&rfd); 840 s_epipe_wait (&respipe);
670 FD_SET(respipe [0], &rfd);
671
672 select (respipe [0] + 1, &rfd, 0, 0, 0);
673 } 841 }
674} 842}
675 843
676static int poll_cb () 844static int
845poll_cb (void)
677{ 846{
678 dSP;
679 int count = 0;
680 int maxreqs = max_poll_reqs;
681 int do_croak = 0;
682 struct timeval tv_start, tv_now;
683 aio_req req;
684
685 if (max_poll_time)
686 gettimeofday (&tv_start, 0);
687
688 for (;;) 847 for (;;)
689 { 848 {
690 for (;;) 849 int res = eio_poll ();
850
851 if (res > 0)
852 croak (0);
853
854 if (!max_outstanding || max_outstanding > eio_nreqs ())
855 return res;
856
857 poll_wait ();
858 }
859}
860
861static void ecb_cold
862reinit (void)
863{
864 create_respipe ();
865
866 if (eio_init (want_poll, done_poll) < 0)
867 croak ("IO::AIO: unable to initialise eio library");
868}
869
870/*****************************************************************************/
871
872static SV *
873get_cb (SV *cb_sv)
874{
875 SvGETMAGIC (cb_sv);
876 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
877}
878
879static aio_req ecb_noinline
880dreq (SV *callback)
881{
882 SV *cb_cv;
883 aio_req req;
884 int req_pri = next_pri;
885 next_pri = EIO_PRI_DEFAULT;
886
887 cb_cv = get_cb (callback);
888
889 req = calloc (sizeof (*req), 1);
890 if (!req)
891 croak ("out of memory during eio_req allocation");
892
893 req->callback = SvREFCNT_inc (cb_cv);
894 req->pri = req_pri;
895
896 return req;
897}
898
899#define dREQ \
900 aio_req req = dreq (callback); \
901
902#define REQ_SEND \
903 PUTBACK; \
904 req_submit (req); \
905 SPAGAIN; \
906 \
907 if (GIMME_V != G_VOID) \
908 XPUSHs (req_sv (req, aio_req_stash));
909
910ecb_inline void
911req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
912{
913 if (expect_false (SvROK (path)))
914 {
915 SV *rv = SvRV (path);
916 SV *wdob;
917
918 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
691 { 919 {
692 maybe_start_thread (); 920 path = AvARRAY (rv)[1];
921 wdob = AvARRAY (rv)[0];
693 922
694 LOCK (reslock); 923 if (SvOK (wdob))
695 req = reqq_shift (&res_queue);
696
697 if (req)
698 { 924 {
699 --npending; 925 *wd = SvAIO_WD (wdob);
700 926 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
701 if (!res_queue.size)
702 {
703 /* read any signals sent by the worker threads */
704 char buf [32];
705 while (read (respipe [0], buf, 32) == 32)
706 ;
707 }
708 }
709
710 UNLOCK (reslock);
711
712 if (!req)
713 break;
714
715 --nreqs;
716
717 if (req->type == REQ_GROUP && req->length)
718 {
719 req->fd = 1; /* mark request as delayed */
720 continue;
721 } 927 }
722 else 928 else
723 { 929 *wd = EIO_INVALID_WD;
724 if (req->type == REQ_READ)
725 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
726
727 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
728 SvREADONLY_off (req->data);
729
730 if (req->statdata)
731 {
732 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
733 PL_laststatval = req->result;
734 PL_statcache = *(req->statdata);
735 }
736
737 req_invoke (req);
738
739 count++;
740 }
741
742 req_free (req);
743
744 if (maxreqs && !--maxreqs)
745 break;
746
747 if (max_poll_time)
748 {
749 gettimeofday (&tv_now, 0);
750
751 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
752 break;
753 }
754 } 930 }
931 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
932 {
933 *wd = (aio_wd)(long)SvIVX (rv);
934 *wdsv = SvREFCNT_inc_NN (rv);
935 *ptr = ".";
936 return; /* path set to "." */
937 }
938 else
939 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
940 }
755 941
756 if (nreqs <= max_outstanding) 942 *pathsv = newSVsv (path);
943 *ptr = SvPVbyte_nolen (*pathsv);
944}
945
946static void ecb_noinline
947req_set_path1 (aio_req req, SV *path)
948{
949 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
950}
951
952static void ecb_noinline
953req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
954{
955 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
956
957 switch (SvTYPE (rv))
958 {
959 case SVt_PVIO:
960 case SVt_PVLV:
961 case SVt_PVGV:
962 req->type = type_fh;
963 req->sv1 = newSVsv (fh_or_path);
964 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
757 break; 965 break;
758 966
759 poll_wait (); 967 default:
760 968 req->type = type_path;
761 ++maxreqs; 969 req_set_path1 (req, fh_or_path);
970 break;
762 } 971 }
763
764 return count;
765} 972}
766 973
767static void create_pipe () 974XS(boot_IO__AIO) ecb_cold;
768{
769 if (pipe (respipe))
770 croak ("unable to initialize result pipe");
771 975
772 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
773 croak ("cannot set result pipe to nonblocking mode");
774
775 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
776 croak ("cannot set result pipe to nonblocking mode");
777}
778
779/*****************************************************************************/
780/* work around various missing functions */
781
782#if !HAVE_PREADWRITE
783# define pread aio_pread
784# define pwrite aio_pwrite
785
786/*
787 * make our pread/pwrite safe against themselves, but not against
788 * normal read/write by using a mutex. slows down execution a lot,
789 * but that's your problem, not mine.
790 */
791static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
792
793static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
794{
795 ssize_t res;
796 off_t ooffset;
797
798 LOCK (preadwritelock);
799 ooffset = lseek (fd, 0, SEEK_CUR);
800 lseek (fd, offset, SEEK_SET);
801 res = read (fd, buf, count);
802 lseek (fd, ooffset, SEEK_SET);
803 UNLOCK (preadwritelock);
804
805 return res;
806}
807
808static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
809{
810 ssize_t res;
811 off_t ooffset;
812
813 LOCK (preadwritelock);
814 ooffset = lseek (fd, 0, SEEK_CUR);
815 lseek (fd, offset, SEEK_SET);
816 res = write (fd, buf, count);
817 lseek (fd, offset, SEEK_SET);
818 UNLOCK (preadwritelock);
819
820 return res;
821}
822#endif
823
824#if !HAVE_FDATASYNC
825# define fdatasync fsync
826#endif
827
828#if !HAVE_READAHEAD
829# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
830
831static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
832{
833 dBUF;
834
835 while (count > 0)
836 {
837 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
838
839 pread (fd, aio_buf, len, offset);
840 offset += len;
841 count -= len;
842 }
843
844 errno = 0;
845}
846
847#endif
848
849#if !HAVE_READDIR_R
850# define readdir_r aio_readdir_r
851
852static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
853
854static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
855{
856 struct dirent *e;
857 int errorno;
858
859 LOCK (readdirlock);
860
861 e = readdir (dirp);
862 errorno = errno;
863
864 if (e)
865 {
866 *res = ent;
867 strcpy (ent->d_name, e->d_name);
868 }
869 else
870 *res = 0;
871
872 UNLOCK (readdirlock);
873
874 errno = errorno;
875 return e ? 0 : -1;
876}
877#endif
878
879/* sendfile always needs emulation */
880static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
881{
882 ssize_t res;
883
884 if (!count)
885 return 0;
886
887#if HAVE_SENDFILE
888# if __linux
889 res = sendfile (ofd, ifd, &offset, count);
890
891# elif __freebsd
892 /*
893 * Of course, the freebsd sendfile is a dire hack with no thoughts
894 * wasted on making it similar to other I/O functions.
895 */
896 {
897 off_t sbytes;
898 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
899
900 if (res < 0 && sbytes)
901 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
902 res = sbytes;
903 }
904
905# elif __hpux
906 res = sendfile (ofd, ifd, offset, count, 0, 0);
907
908# elif __solaris
909 {
910 struct sendfilevec vec;
911 size_t sbytes;
912
913 vec.sfv_fd = ifd;
914 vec.sfv_flag = 0;
915 vec.sfv_off = offset;
916 vec.sfv_len = count;
917
918 res = sendfilev (ofd, &vec, 1, &sbytes);
919
920 if (res < 0 && sbytes)
921 res = sbytes;
922 }
923
924# endif
925#else
926 res = -1;
927 errno = ENOSYS;
928#endif
929
930 if (res < 0
931 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
932#if __solaris
933 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
934#endif
935 )
936 )
937 {
938 /* emulate sendfile. this is a major pain in the ass */
939 dBUF;
940
941 res = 0;
942
943 while (count)
944 {
945 ssize_t cnt;
946
947 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
948
949 if (cnt <= 0)
950 {
951 if (cnt && !res) res = -1;
952 break;
953 }
954
955 cnt = write (ofd, aio_buf, cnt);
956
957 if (cnt <= 0)
958 {
959 if (cnt && !res) res = -1;
960 break;
961 }
962
963 offset += cnt;
964 res += cnt;
965 count -= cnt;
966 }
967 }
968
969 return res;
970}
971
972/* read a full directory */
973static void scandir_ (aio_req req, worker *self)
974{
975 DIR *dirp;
976 union
977 {
978 struct dirent d;
979 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
980 } *u;
981 struct dirent *entp;
982 char *name, *names;
983 int memlen = 4096;
984 int memofs = 0;
985 int res = 0;
986 int errorno;
987
988 LOCK (wrklock);
989 self->dirp = dirp = opendir (req->dataptr);
990 self->dbuf = u = malloc (sizeof (*u));
991 req->data2ptr = names = malloc (memlen);
992 UNLOCK (wrklock);
993
994 if (dirp && u && names)
995 for (;;)
996 {
997 errno = 0;
998 readdir_r (dirp, &u->d, &entp);
999
1000 if (!entp)
1001 break;
1002
1003 name = entp->d_name;
1004
1005 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1006 {
1007 int len = strlen (name) + 1;
1008
1009 res++;
1010
1011 while (memofs + len > memlen)
1012 {
1013 memlen *= 2;
1014 LOCK (wrklock);
1015 req->data2ptr = names = realloc (names, memlen);
1016 UNLOCK (wrklock);
1017
1018 if (!names)
1019 break;
1020 }
1021
1022 memcpy (names + memofs, name, len);
1023 memofs += len;
1024 }
1025 }
1026
1027 if (errno)
1028 res = -1;
1029
1030 req->result = res;
1031}
1032
1033/*****************************************************************************/
1034
1035static void *aio_proc (void *thr_arg)
1036{
1037 aio_req req;
1038 struct timespec ts;
1039 worker *self = (worker *)thr_arg;
1040
1041 /* try to distribute timeouts somewhat evenly */
1042 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1043 * (1000000000UL / 1024UL);
1044
1045 for (;;)
1046 {
1047 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1048
1049 LOCK (reqlock);
1050
1051 for (;;)
1052 {
1053 self->req = req = reqq_shift (&req_queue);
1054
1055 if (req)
1056 break;
1057
1058 ++idle;
1059
1060 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1061 == ETIMEDOUT)
1062 {
1063 if (idle > max_idle)
1064 {
1065 --idle;
1066 UNLOCK (reqlock);
1067 LOCK (wrklock);
1068 --started;
1069 UNLOCK (wrklock);
1070 goto quit;
1071 }
1072
1073 /* we are allowed to idle, so do so without any timeout */
1074 pthread_cond_wait (&reqwait, &reqlock);
1075 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1076 }
1077
1078 --idle;
1079 }
1080
1081 --nready;
1082
1083 UNLOCK (reqlock);
1084
1085 errno = 0; /* strictly unnecessary */
1086
1087 if (!(req->flags & FLAG_CANCELLED))
1088 switch (req->type)
1089 {
1090 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1091 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1092
1093 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1094 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1095
1096 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1097 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1098 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1099
1100 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1101 case REQ_CLOSE: req->result = close (req->fd); break;
1102 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1103 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1104 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1105 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1106 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1107 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1108
1109 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1110 case REQ_FSYNC: req->result = fsync (req->fd); break;
1111 case REQ_READDIR: scandir_ (req, self); break;
1112
1113 case REQ_BUSY:
1114 {
1115 struct timeval tv;
1116
1117 tv.tv_sec = req->fd;
1118 tv.tv_usec = req->fd2;
1119
1120 req->result = select (0, 0, 0, 0, &tv);
1121 }
1122
1123 case REQ_GROUP:
1124 case REQ_NOP:
1125 break;
1126
1127 case REQ_QUIT:
1128 goto quit;
1129
1130 default:
1131 req->result = ENOSYS;
1132 break;
1133 }
1134
1135 req->errorno = errno;
1136
1137 LOCK (reslock);
1138
1139 ++npending;
1140
1141 if (!reqq_push (&res_queue, req))
1142 /* write a dummy byte to the pipe so fh becomes ready */
1143 write (respipe [1], &respipe, 1);
1144
1145 self->req = 0;
1146 worker_clear (self);
1147
1148 UNLOCK (reslock);
1149 }
1150
1151quit:
1152 LOCK (wrklock);
1153 worker_free (self);
1154 UNLOCK (wrklock);
1155
1156 return 0;
1157}
1158
1159/*****************************************************************************/
1160
1161static void atfork_prepare (void)
1162{
1163 LOCK (wrklock);
1164 LOCK (reqlock);
1165 LOCK (reslock);
1166#if !HAVE_PREADWRITE
1167 LOCK (preadwritelock);
1168#endif
1169#if !HAVE_READDIR_R
1170 LOCK (readdirlock);
1171#endif
1172}
1173
1174static void atfork_parent (void)
1175{
1176#if !HAVE_READDIR_R
1177 UNLOCK (readdirlock);
1178#endif
1179#if !HAVE_PREADWRITE
1180 UNLOCK (preadwritelock);
1181#endif
1182 UNLOCK (reslock);
1183 UNLOCK (reqlock);
1184 UNLOCK (wrklock);
1185}
1186
1187static void atfork_child (void)
1188{
1189 aio_req prv;
1190
1191 while (prv = reqq_shift (&req_queue))
1192 req_free (prv);
1193
1194 while (prv = reqq_shift (&res_queue))
1195 req_free (prv);
1196
1197 while (wrk_first.next != &wrk_first)
1198 {
1199 worker *wrk = wrk_first.next;
1200
1201 if (wrk->req)
1202 req_free (wrk->req);
1203
1204 worker_clear (wrk);
1205 worker_free (wrk);
1206 }
1207
1208 started = 0;
1209 idle = 0;
1210 nreqs = 0;
1211 nready = 0;
1212 npending = 0;
1213
1214 close (respipe [0]);
1215 close (respipe [1]);
1216 create_pipe ();
1217
1218 atfork_parent ();
1219}
1220
1221#define dREQ \
1222 aio_req req; \
1223 int req_pri = next_pri; \
1224 next_pri = DEFAULT_PRI + PRI_BIAS; \
1225 \
1226 if (SvOK (callback) && !SvROK (callback)) \
1227 croak ("callback must be undef or of reference type"); \
1228 \
1229 Newz (0, req, 1, aio_cb); \
1230 if (!req) \
1231 croak ("out of memory during aio_req allocation"); \
1232 \
1233 req->callback = newSVsv (callback); \
1234 req->pri = req_pri
1235
1236#define REQ_SEND \
1237 req_send (req); \
1238 \
1239 if (GIMME_V != G_VOID) \
1240 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1241
1242MODULE = IO::AIO PACKAGE = IO::AIO 976MODULE = IO::AIO PACKAGE = IO::AIO
1243 977
1244PROTOTYPES: ENABLE 978PROTOTYPES: ENABLE
1245 979
1246BOOT: 980BOOT:
1247{ 981{
982 static const struct {
983 const char *name;
984 IV iv;
985 } *civ, const_iv[] = {
986# define const_niv(name, value) { # name, (IV) value },
987# define const_iv(name) { # name, (IV) name },
988# define const_eio(name) { # name, (IV) EIO_ ## name },
989
990 /* you have to re-run ./gendef0 after adding/removing any constants here */
991 /* the first block can be undef if missing */
992 const_iv (ENOSYS)
993 const_iv (EXDEV)
994 const_iv (EBADR)
995
996 /* for lseek */
997 const_iv (SEEK_DATA)
998 const_iv (SEEK_HOLE)
999
1000 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1001 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1002 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1003 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1004 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1005 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1006
1007 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1008 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1009 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1010 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1011 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1012
1013 /* the second block will be 0 when missing */
1014 const_iv (O_RDONLY)
1015 const_iv (O_WRONLY)
1016 const_iv (O_RDWR)
1017 const_iv (O_CREAT)
1018 const_iv (O_TRUNC)
1019 const_iv (O_EXCL)
1020 const_iv (O_APPEND)
1021
1022 const_iv (O_ASYNC)
1023 const_iv (O_DIRECT)
1024 const_iv (O_NOATIME)
1025
1026 const_iv (O_CLOEXEC)
1027 const_iv (O_NOCTTY)
1028 const_iv (O_NOFOLLOW)
1029 const_iv (O_NONBLOCK)
1030 const_iv (O_EXEC)
1031 const_iv (O_SEARCH)
1032 const_iv (O_DIRECTORY)
1033 const_iv (O_DSYNC)
1034 const_iv (O_RSYNC)
1035 const_iv (O_SYNC)
1036 const_iv (O_PATH)
1037 const_iv (O_TMPFILE)
1038 const_iv (O_TTY_INIT)
1039
1040 const_iv (S_IFIFO)
1041 const_iv (S_IFCHR)
1042 const_iv (S_IFBLK)
1043 const_iv (S_IFLNK)
1044 const_iv (S_IFREG)
1045 const_iv (S_IFDIR)
1046 const_iv (S_IFWHT)
1047 const_iv (S_IFSOCK)
1048 const_iv (S_IFMT)
1049
1050 const_iv (ST_RDONLY)
1051 const_iv (ST_NOSUID)
1052 const_iv (ST_NODEV)
1053 const_iv (ST_NOEXEC)
1054 const_iv (ST_SYNCHRONOUS)
1055 const_iv (ST_MANDLOCK)
1056 const_iv (ST_WRITE)
1057 const_iv (ST_APPEND)
1058 const_iv (ST_IMMUTABLE)
1059 const_iv (ST_NOATIME)
1060 const_iv (ST_NODIRATIME)
1061 const_iv (ST_RELATIME)
1062
1063 const_iv (PROT_NONE)
1064 const_iv (PROT_EXEC)
1065 const_iv (PROT_READ)
1066 const_iv (PROT_WRITE)
1067
1068 const_iv (MAP_PRIVATE)
1069 const_iv (MAP_SHARED)
1070 const_iv (MAP_FIXED)
1071 const_iv (MAP_ANONYMOUS)
1072
1073 /* linuxish */
1074 const_iv (MAP_LOCKED)
1075 const_iv (MAP_NORESERVE)
1076 const_iv (MAP_POPULATE)
1077 const_iv (MAP_NONBLOCK)
1078 const_iv (MAP_GROWSDOWN)
1079 const_iv (MAP_32BIT)
1080 const_iv (MAP_HUGETLB)
1081 const_iv (MAP_STACK)
1082
1083 const_iv (F_DUPFD_CLOEXEC)
1084
1085 const_iv (F_OFD_GETLK)
1086 const_iv (F_OFD_SETLK)
1087 const_iv (F_OFD_GETLKW)
1088
1089 const_iv (FIFREEZE)
1090 const_iv (FITHAW)
1091 const_iv (FITRIM)
1092 const_iv (FICLONE)
1093 const_iv (FICLONERANGE)
1094 const_iv (FIDEDUPERANGE)
1095
1096 const_iv (FS_IOC_GETFLAGS)
1097 const_iv (FS_IOC_SETFLAGS)
1098 const_iv (FS_IOC_GETVERSION)
1099 const_iv (FS_IOC_SETVERSION)
1100 const_iv (FS_IOC_FIEMAP)
1101 const_iv (FS_IOC_FSGETXATTR)
1102 const_iv (FS_IOC_FSSETXATTR)
1103 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1104 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1105 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1106
1107 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1108
1109 const_iv (FS_SECRM_FL)
1110 const_iv (FS_UNRM_FL)
1111 const_iv (FS_COMPR_FL)
1112 const_iv (FS_SYNC_FL)
1113 const_iv (FS_IMMUTABLE_FL)
1114 const_iv (FS_APPEND_FL)
1115 const_iv (FS_NODUMP_FL)
1116 const_iv (FS_NOATIME_FL)
1117 const_iv (FS_DIRTY_FL)
1118 const_iv (FS_COMPRBLK_FL)
1119 const_iv (FS_NOCOMP_FL)
1120 const_iv (FS_ENCRYPT_FL)
1121 const_iv (FS_BTREE_FL)
1122 const_iv (FS_INDEX_FL)
1123 const_iv (FS_JOURNAL_DATA_FL)
1124 const_iv (FS_NOTAIL_FL)
1125 const_iv (FS_DIRSYNC_FL)
1126 const_iv (FS_TOPDIR_FL)
1127 const_iv (FS_FL_USER_MODIFIABLE)
1128
1129 const_iv (FS_XFLAG_REALTIME)
1130 const_iv (FS_XFLAG_PREALLOC)
1131 const_iv (FS_XFLAG_IMMUTABLE)
1132 const_iv (FS_XFLAG_APPEND)
1133 const_iv (FS_XFLAG_SYNC)
1134 const_iv (FS_XFLAG_NOATIME)
1135 const_iv (FS_XFLAG_NODUMP)
1136 const_iv (FS_XFLAG_RTINHERIT)
1137 const_iv (FS_XFLAG_PROJINHERIT)
1138 const_iv (FS_XFLAG_NOSYMLINKS)
1139 const_iv (FS_XFLAG_EXTSIZE)
1140 const_iv (FS_XFLAG_EXTSZINHERIT)
1141 const_iv (FS_XFLAG_NODEFRAG)
1142 const_iv (FS_XFLAG_FILESTREAM)
1143 const_iv (FS_XFLAG_DAX)
1144 const_iv (FS_XFLAG_HASATTR)
1145
1146 const_iv (FIEMAP_FLAG_SYNC)
1147 const_iv (FIEMAP_FLAG_XATTR)
1148 const_iv (FIEMAP_FLAGS_COMPAT)
1149 const_iv (FIEMAP_EXTENT_LAST)
1150 const_iv (FIEMAP_EXTENT_UNKNOWN)
1151 const_iv (FIEMAP_EXTENT_DELALLOC)
1152 const_iv (FIEMAP_EXTENT_ENCODED)
1153 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1154 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1155 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1156 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1157 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1158 const_iv (FIEMAP_EXTENT_MERGED)
1159 const_iv (FIEMAP_EXTENT_SHARED)
1160
1161 const_iv (SPLICE_F_MOVE)
1162 const_iv (SPLICE_F_NONBLOCK)
1163 const_iv (SPLICE_F_MORE)
1164 const_iv (SPLICE_F_GIFT)
1165
1166 /* these are libeio constants, and are independent of gendef0 */
1167 const_eio (SEEK_SET)
1168 const_eio (SEEK_CUR)
1169 const_eio (SEEK_END)
1170
1171 const_eio (MCL_FUTURE)
1172 const_eio (MCL_CURRENT)
1173
1174 const_eio (MS_ASYNC)
1175 const_eio (MS_INVALIDATE)
1176 const_eio (MS_SYNC)
1177
1178 const_eio (MT_MODIFY)
1179
1180 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1181 const_eio (SYNC_FILE_RANGE_WRITE)
1182 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1183
1184 const_eio (FALLOC_FL_KEEP_SIZE)
1185 const_eio (FALLOC_FL_PUNCH_HOLE)
1186 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1187 const_eio (FALLOC_FL_ZERO_RANGE)
1188 const_eio (FALLOC_FL_INSERT_RANGE)
1189 const_eio (FALLOC_FL_UNSHARE_RANGE)
1190
1191 const_eio (RENAME_NOREPLACE)
1192 const_eio (RENAME_EXCHANGE)
1193 const_eio (RENAME_WHITEOUT)
1194
1195 const_eio (READDIR_DENTS)
1196 const_eio (READDIR_DIRS_FIRST)
1197 const_eio (READDIR_STAT_ORDER)
1198 const_eio (READDIR_FOUND_UNKNOWN)
1199
1200 const_eio (DT_UNKNOWN)
1201 const_eio (DT_FIFO)
1202 const_eio (DT_CHR)
1203 const_eio (DT_DIR)
1204 const_eio (DT_BLK)
1205 const_eio (DT_REG)
1206 const_eio (DT_LNK)
1207 const_eio (DT_SOCK)
1208 const_eio (DT_WHT)
1209 };
1210
1248 HV *stash = gv_stashpv ("IO::AIO", 1); 1211 aio_stash = gv_stashpv ("IO::AIO" , 1);
1212 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1213 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1214 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1249 1215
1250 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1216 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1251 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1217 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1252 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1253 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1254 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1255 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1256 1218
1257 create_pipe (); 1219 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1258 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1259}
1260 1220
1221 reinit ();
1222}
1223
1261void 1224void
1225reinit ()
1226 PROTOTYPE:
1227
1228void
1262max_poll_reqs (int nreqs) 1229max_poll_reqs (unsigned int nreqs)
1263 PROTOTYPE: $ 1230 PROTOTYPE: $
1264 CODE: 1231 CODE:
1265 max_poll_reqs = nreqs; 1232 eio_set_max_poll_reqs (nreqs);
1266 1233
1267void 1234void
1268max_poll_time (double nseconds) 1235max_poll_time (double nseconds)
1269 PROTOTYPE: $ 1236 PROTOTYPE: $
1270 CODE: 1237 CODE:
1271 max_poll_time = nseconds * AIO_TICKS; 1238 eio_set_max_poll_time (nseconds);
1272 1239
1273void 1240void
1274min_parallel (int nthreads) 1241min_parallel (unsigned int nthreads)
1275 PROTOTYPE: $
1276
1277void
1278max_parallel (int nthreads)
1279 PROTOTYPE: $
1280
1281void
1282max_idle (int nthreads)
1283 PROTOTYPE: $ 1242 PROTOTYPE: $
1284 CODE: 1243 CODE:
1285 set_max_idle (nthreads); 1244 eio_set_min_parallel (nthreads);
1286 1245
1287int 1246void
1288max_outstanding (int maxreqs) 1247max_parallel (unsigned int nthreads)
1289 PROTOTYPE: $ 1248 PROTOTYPE: $
1290 CODE: 1249 CODE:
1291 RETVAL = max_outstanding; 1250 eio_set_max_parallel (nthreads);
1251
1252void
1253max_idle (unsigned int nthreads)
1254 PROTOTYPE: $
1255 CODE:
1256 eio_set_max_idle (nthreads);
1257
1258void
1259idle_timeout (unsigned int seconds)
1260 PROTOTYPE: $
1261 CODE:
1262 eio_set_idle_timeout (seconds);
1263
1264void
1265max_outstanding (unsigned int maxreqs)
1266 PROTOTYPE: $
1267 CODE:
1292 max_outstanding = maxreqs; 1268 max_outstanding = maxreqs;
1293 OUTPUT:
1294 RETVAL
1295 1269
1296void 1270void
1297aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1271aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1298 SV * pathname
1299 int flags
1300 int mode
1301 SV * callback
1302 PROTOTYPE: $$$;$
1303 PPCODE: 1272 PPCODE:
1304{ 1273{
1305 dREQ; 1274 dREQ;
1306 1275
1307 req->type = REQ_OPEN; 1276 req->type = EIO_WD_OPEN;
1308 req->data = newSVsv (pathname); 1277 req_set_path1 (req, pathname);
1309 req->dataptr = SvPVbyte_nolen (req->data);
1310 req->fd = flags;
1311 req->mode = mode;
1312 1278
1313 REQ_SEND; 1279 REQ_SEND;
1314} 1280}
1315 1281
1316void 1282void
1283aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1284 PPCODE:
1285{
1286 dREQ;
1287
1288 req->type = EIO_OPEN;
1289 req_set_path1 (req, pathname);
1290 req->int1 = flags;
1291 req->int2 = mode;
1292
1293 REQ_SEND;
1294}
1295
1296void
1317aio_close (fh,callback=&PL_sv_undef) 1297aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1318 SV * fh
1319 SV * callback
1320 PROTOTYPE: $;$
1321 ALIAS: 1298 ALIAS:
1322 aio_close = REQ_CLOSE
1323 aio_fsync = REQ_FSYNC 1299 aio_fsync = EIO_FSYNC
1324 aio_fdatasync = REQ_FDATASYNC 1300 aio_fdatasync = EIO_FDATASYNC
1301 aio_syncfs = EIO_SYNCFS
1325 PPCODE: 1302 PPCODE:
1326{ 1303{
1304 int fd = s_fileno_croak (fh, 0);
1327 dREQ; 1305 dREQ;
1328 1306
1329 req->type = ix; 1307 req->type = ix;
1330 req->fh = newSVsv (fh); 1308 req->sv1 = newSVsv (fh);
1331 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1309 req->int1 = fd;
1332 1310
1333 REQ_SEND (req); 1311 REQ_SEND;
1334} 1312}
1335 1313
1336void 1314void
1315aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1316 PPCODE:
1317{
1318 int fd = s_fileno_croak (fh, 0);
1319 dREQ;
1320
1321 req->type = EIO_SYNC_FILE_RANGE;
1322 req->sv1 = newSVsv (fh);
1323 req->int1 = fd;
1324 req->offs = offset;
1325 req->size = nbytes;
1326 req->int2 = flags;
1327
1328 REQ_SEND;
1329}
1330
1331void
1332aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1333 PPCODE:
1334{
1335 int fd = s_fileno_croak (fh, 0);
1336 dREQ;
1337
1338 req->type = EIO_FALLOCATE;
1339 req->sv1 = newSVsv (fh);
1340 req->int1 = fd;
1341 req->int2 = mode;
1342 req->offs = offset;
1343 req->size = len;
1344
1345 REQ_SEND;
1346}
1347
1348void
1349aio_close (SV *fh, SV *callback = &PL_sv_undef)
1350 PPCODE:
1351{
1352 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1353 int fd = s_fileno_croak (fh, 0);
1354 dREQ;
1355
1356 if (expect_false (close_fd < 0))
1357 {
1358 int pipefd [2];
1359
1360 if (
1361#ifdef _WIN32
1362 _pipe (pipefd, 1, _O_BINARY) < 0
1363#else
1364 pipe (pipefd) < 0
1365 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1366#endif
1367 || close (pipefd [1]) < 0
1368 )
1369 abort (); /*D*/
1370
1371 close_fd = pipefd [0];
1372 }
1373
1374 req->type = EIO_DUP2;
1375 req->int1 = close_fd;
1376 req->sv2 = newSVsv (fh);
1377 req->int2 = fd;
1378
1379 REQ_SEND;
1380}
1381
1382void
1383aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1384 PPCODE:
1385{
1386 int fd = s_fileno_croak (fh, 0);
1387 dREQ;
1388
1389 req->type = EIO_SEEK;
1390 req->sv1 = newSVsv (fh);
1391 req->int1 = fd;
1392 req->offs = SvVAL64 (offset);
1393 req->int2 = whence;
1394
1395 REQ_SEND;
1396}
1397
1398void
1337aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1399aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1338 SV * fh
1339 UV offset
1340 UV length
1341 SV * data
1342 UV dataoffset
1343 SV * callback
1344 ALIAS: 1400 ALIAS:
1345 aio_read = REQ_READ 1401 aio_read = EIO_READ
1346 aio_write = REQ_WRITE 1402 aio_write = EIO_WRITE
1347 PROTOTYPE: $$$$$;$
1348 PPCODE: 1403 PPCODE:
1349{ 1404{
1350 aio_req req;
1351 STRLEN svlen; 1405 STRLEN svlen;
1406 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1352 char *svptr = SvPVbyte (data, svlen); 1407 char *svptr = SvPVbyte (data, svlen);
1353 1408 UV len = SvUV (length);
1354 SvUPGRADE (data, SVt_PV);
1355 SvPOK_on (data);
1356 1409
1357 if (dataoffset < 0) 1410 if (dataoffset < 0)
1358 dataoffset += svlen; 1411 dataoffset += svlen;
1359 1412
1360 if (dataoffset < 0 || dataoffset > svlen) 1413 if (dataoffset < 0 || dataoffset > svlen)
1361 croak ("data offset outside of string"); 1414 croak ("dataoffset outside of data scalar");
1362 1415
1363 if (ix == REQ_WRITE) 1416 if (ix == EIO_WRITE)
1364 { 1417 {
1365 /* write: check length and adjust. */ 1418 /* write: check length and adjust. */
1366 if (length < 0 || length + dataoffset > svlen) 1419 if (!SvOK (length) || len + dataoffset > svlen)
1367 length = svlen - dataoffset; 1420 len = svlen - dataoffset;
1368 } 1421 }
1369 else 1422 else
1370 { 1423 {
1371 /* read: grow scalar as necessary */ 1424 /* read: check type and grow scalar as necessary */
1425 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1372 svptr = SvGROW (data, length + dataoffset); 1426 svptr = sv_grow (data, len + dataoffset + 1);
1427 else if (SvCUR (data) < len + dataoffset)
1428 croak ("length + dataoffset outside of scalar, and cannot grow");
1373 } 1429 }
1374
1375 if (length < 0)
1376 croak ("length must not be negative");
1377 1430
1378 { 1431 {
1379 dREQ; 1432 dREQ;
1380 1433
1381 req->type = ix; 1434 req->type = ix;
1382 req->fh = newSVsv (fh); 1435 req->sv1 = newSVsv (fh);
1383 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1436 req->int1 = fd;
1384 : IoOFP (sv_2io (fh))); 1437 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1385 req->offset = offset; 1438 req->size = len;
1386 req->length = length;
1387 req->data = SvREFCNT_inc (data); 1439 req->sv2 = SvREFCNT_inc (data);
1388 req->dataptr = (char *)svptr + dataoffset; 1440 req->ptr2 = (char *)svptr + dataoffset;
1441 req->stroffset = dataoffset;
1389 1442
1390 if (!SvREADONLY (data)) 1443 if (!SvREADONLY (data))
1391 { 1444 {
1392 SvREADONLY_on (data); 1445 SvREADONLY_on (data);
1393 req->data2ptr = (void *)data; 1446 req->flags |= FLAG_SV2_RO_OFF;
1394 } 1447 }
1395 1448
1396 REQ_SEND; 1449 REQ_SEND;
1397 } 1450 }
1398} 1451}
1399 1452
1400void 1453void
1401aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1454aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1402 SV * out_fh 1455 ALIAS:
1403 SV * in_fh 1456 aio_ioctl = EIO_IOCTL
1404 UV in_offset 1457 aio_fcntl = EIO_FCNTL
1405 UV length
1406 SV * callback
1407 PROTOTYPE: $$$$;$
1408 PPCODE: 1458 PPCODE:
1409{ 1459{
1410 dREQ; 1460 int fd = s_fileno_croak (fh, 0);
1461 char *svptr;
1411 1462
1412 req->type = REQ_SENDFILE; 1463 if (SvPOK (arg) || !SvNIOK (arg))
1413 req->fh = newSVsv (out_fh);
1414 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1415 req->fh2 = newSVsv (in_fh);
1416 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1417 req->offset = in_offset;
1418 req->length = length;
1419
1420 REQ_SEND;
1421}
1422
1423void
1424aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1425 SV * fh
1426 UV offset
1427 IV length
1428 SV * callback
1429 PROTOTYPE: $$$;$
1430 PPCODE:
1431{
1432 dREQ;
1433
1434 req->type = REQ_READAHEAD;
1435 req->fh = newSVsv (fh);
1436 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1437 req->offset = offset;
1438 req->length = length;
1439
1440 REQ_SEND;
1441}
1442
1443void
1444aio_stat (fh_or_path,callback=&PL_sv_undef)
1445 SV * fh_or_path
1446 SV * callback
1447 ALIAS:
1448 aio_stat = REQ_STAT
1449 aio_lstat = REQ_LSTAT
1450 PPCODE:
1451{
1452 dREQ;
1453
1454 New (0, req->statdata, 1, Stat_t);
1455 if (!req->statdata)
1456 { 1464 {
1457 req_free (req); 1465 STRLEN svlen;
1458 croak ("out of memory during aio_req->statdata allocation"); 1466 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1459 } 1467#ifdef IOCPARM_LEN
1468 STRLEN need = IOCPARM_LEN (request);
1469#else
1470 STRLEN need = 256;
1471#endif
1460 1472
1461 if (SvPOK (fh_or_path)) 1473 if (svlen < need)
1462 { 1474 svptr = SvGROW (arg, need);
1463 req->type = ix;
1464 req->data = newSVsv (fh_or_path);
1465 req->dataptr = SvPVbyte_nolen (req->data);
1466 } 1475 }
1467 else 1476 else
1477 svptr = (char *)SvIV (arg);
1478
1468 { 1479 {
1480 dREQ;
1481
1469 req->type = REQ_FSTAT; 1482 req->type = ix;
1470 req->fh = newSVsv (fh_or_path); 1483 req->sv1 = newSVsv (fh);
1471 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1484 req->int1 = fd;
1485 req->int2 = (long)request;
1486 req->sv2 = SvREFCNT_inc (arg);
1487 req->ptr2 = svptr;
1488
1489 REQ_SEND;
1472 } 1490 }
1491}
1492
1493void
1494aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1495 ALIAS:
1496 aio_readlink = EIO_READLINK
1497 aio_realpath = EIO_REALPATH
1498 PPCODE:
1499{
1500 dREQ;
1501
1502 req->type = ix;
1503 req_set_path1 (req, pathname);
1473 1504
1474 REQ_SEND; 1505 REQ_SEND;
1475} 1506}
1476 1507
1477void 1508void
1478aio_unlink (pathname,callback=&PL_sv_undef) 1509aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1479 SV * pathname 1510 PPCODE:
1480 SV * callback 1511{
1512 int ifd = s_fileno_croak (in_fh , 0);
1513 int ofd = s_fileno_croak (out_fh, 1);
1514 dREQ;
1515
1516 req->type = EIO_SENDFILE;
1517 req->sv1 = newSVsv (out_fh);
1518 req->int1 = ofd;
1519 req->sv2 = newSVsv (in_fh);
1520 req->int2 = ifd;
1521 req->offs = in_offset;
1522 req->size = length;
1523
1524 REQ_SEND;
1525}
1526
1527void
1528aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1529 PPCODE:
1530{
1531 int fd = s_fileno_croak (fh, 0);
1532 dREQ;
1533
1534 req->type = EIO_READAHEAD;
1535 req->sv1 = newSVsv (fh);
1536 req->int1 = fd;
1537 req->offs = offset;
1538 req->size = length;
1539
1540 REQ_SEND;
1541}
1542
1543void
1544aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1481 ALIAS: 1545 ALIAS:
1546 aio_stat = EIO_STAT
1547 aio_lstat = EIO_LSTAT
1548 aio_statvfs = EIO_STATVFS
1549 PPCODE:
1550{
1551 dREQ;
1552
1553 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1554
1555 REQ_SEND;
1556}
1557
1558UV
1559major (UV dev)
1560 ALIAS:
1561 minor = 1
1562 CODE:
1563 RETVAL = ix ? minor (dev) : major (dev);
1564 OUTPUT:
1565 RETVAL
1566
1567UV
1568makedev (UV maj, UV min)
1569 CODE:
1570 RETVAL = makedev (maj, min);
1571 OUTPUT:
1572 RETVAL
1573
1574void
1575aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1576 PPCODE:
1577{
1578 dREQ;
1579
1580 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1581 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1582 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1583
1584 REQ_SEND;
1585}
1586
1587void
1588aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1589 PPCODE:
1590{
1591 dREQ;
1592
1593 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1594 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1595
1596 REQ_SEND;
1597}
1598
1599void
1600aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1601 PPCODE:
1602{
1603 dREQ;
1604
1605 req->int2 = mode;
1606 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1607
1608 REQ_SEND;
1609}
1610
1611void
1612aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1613 PPCODE:
1614{
1615 dREQ;
1616
1617 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1618 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1619 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1620
1621 REQ_SEND;
1622}
1623
1624void
1625aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1626 PPCODE:
1627{
1628 dREQ;
1629
1630 req->type = EIO_READDIR;
1631 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1632
1633 if (flags & EIO_READDIR_DENTS)
1634 req->int1 |= EIO_READDIR_CUSTOM2;
1635
1636 req_set_path1 (req, pathname);
1637
1638 REQ_SEND;
1639}
1640
1641void
1642aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1643 PPCODE:
1644{
1645 dREQ;
1646
1647 req->type = EIO_MKDIR;
1648 req->int2 = mode;
1649 req_set_path1 (req, pathname);
1650
1651 REQ_SEND;
1652}
1653
1654void
1655aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1656 ALIAS:
1482 aio_unlink = REQ_UNLINK 1657 aio_unlink = EIO_UNLINK
1483 aio_rmdir = REQ_RMDIR 1658 aio_rmdir = EIO_RMDIR
1484 aio_readdir = REQ_READDIR 1659 aio_readdir = EIO_READDIR
1485 PPCODE: 1660 PPCODE:
1486{ 1661{
1487 dREQ; 1662 dREQ;
1488 1663
1489 req->type = ix; 1664 req->type = ix;
1490 req->data = newSVsv (pathname); 1665 req_set_path1 (req, pathname);
1491 req->dataptr = SvPVbyte_nolen (req->data); 1666
1492
1493 REQ_SEND; 1667 REQ_SEND;
1494} 1668}
1495 1669
1496void 1670void
1497aio_link (oldpath,newpath,callback=&PL_sv_undef) 1671aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1498 SV * oldpath
1499 SV * newpath
1500 SV * callback
1501 ALIAS: 1672 ALIAS:
1502 aio_link = REQ_LINK 1673 aio_link = EIO_LINK
1503 aio_symlink = REQ_SYMLINK 1674 aio_symlink = EIO_SYMLINK
1504 aio_rename = REQ_RENAME 1675 aio_rename = EIO_RENAME
1505 PPCODE: 1676 PPCODE:
1506{ 1677{
1678 eio_wd wd2 = 0;
1507 dREQ; 1679 dREQ;
1508 1680
1509 req->type = ix; 1681 req->type = ix;
1510 req->fh = newSVsv (oldpath); 1682 req_set_path1 (req, oldpath);
1511 req->data2ptr = SvPVbyte_nolen (req->fh); 1683 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1512 req->data = newSVsv (newpath); 1684 req->int3 = (long)wd2;
1513 req->dataptr = SvPVbyte_nolen (req->data);
1514 1685
1515 REQ_SEND; 1686 REQ_SEND;
1516} 1687}
1517 1688
1518void 1689void
1519aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1690aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1520 SV * pathname
1521 SV * callback
1522 UV mode
1523 UV dev
1524 PPCODE: 1691 PPCODE:
1525{ 1692{
1693 eio_wd wd2 = 0;
1526 dREQ; 1694 dREQ;
1527 1695
1528 req->type = REQ_MKNOD; 1696 req->type = EIO_RENAME;
1529 req->data = newSVsv (pathname); 1697 req_set_path1 (req, oldpath);
1530 req->dataptr = SvPVbyte_nolen (req->data); 1698 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1531 req->mode = (mode_t)mode; 1699 req->int2 = flags;
1532 req->offset = dev; 1700 req->int3 = (long)wd2;
1533 1701
1534 REQ_SEND; 1702 REQ_SEND;
1535} 1703}
1536 1704
1537void 1705void
1538aio_busy (delay,callback=&PL_sv_undef) 1706aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1539 double delay
1540 SV * callback
1541 PPCODE: 1707 PPCODE:
1542{ 1708{
1543 dREQ; 1709 dREQ;
1544 1710
1545 req->type = REQ_BUSY; 1711 req->type = EIO_MKNOD;
1546 req->fd = delay < 0. ? 0 : delay; 1712 req->int2 = (mode_t)mode;
1547 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1713 req->offs = dev;
1548 1714 req_set_path1 (req, pathname);
1715
1549 REQ_SEND; 1716 REQ_SEND;
1550} 1717}
1551 1718
1552void 1719void
1553aio_group (callback=&PL_sv_undef) 1720aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1554 SV * callback 1721 ALIAS:
1555 PROTOTYPE: ;$ 1722 aio_mtouch = EIO_MTOUCH
1723 aio_msync = EIO_MSYNC
1556 PPCODE: 1724 PPCODE:
1557{ 1725{
1726 STRLEN svlen;
1727 char *svptr = SvPVbyte (data, svlen);
1728 UV len = SvUV (length);
1729
1730 if (flags < 0)
1731 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1732
1733 if (offset < 0)
1734 offset += svlen;
1735
1736 if (offset < 0 || offset > svlen)
1737 croak ("offset outside of scalar");
1738
1739 if (!SvOK (length) || len + offset > svlen)
1740 len = svlen - offset;
1741
1742 {
1743 dREQ;
1744
1745 req->type = ix;
1746 req->sv2 = SvREFCNT_inc (data);
1747 req->ptr2 = (char *)svptr + offset;
1748 req->size = len;
1749 req->int1 = flags;
1750
1751 REQ_SEND;
1752 }
1753}
1754
1755void
1756aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1757 PPCODE:
1758{
1759 STRLEN svlen;
1760 char *svptr = SvPVbyte (data, svlen);
1761 UV len = SvUV (length);
1762
1763 if (offset < 0)
1764 offset += svlen;
1765
1766 if (offset < 0 || offset > svlen)
1767 croak ("offset outside of scalar");
1768
1769 if (!SvOK (length) || len + offset > svlen)
1770 len = svlen - offset;
1771
1772 {
1773 dREQ;
1774
1775 req->type = EIO_MLOCK;
1776 req->sv2 = SvREFCNT_inc (data);
1777 req->ptr2 = (char *)svptr + offset;
1778 req->size = len;
1779
1780 REQ_SEND;
1781 }
1782}
1783
1784void
1785aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1786 PPCODE:
1787{
1788 dREQ;
1789
1790 req->type = EIO_MLOCKALL;
1791 req->int1 = flags;
1792
1793 REQ_SEND;
1794}
1795
1796void
1797aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1798 PPCODE:
1799{
1800 int fd = s_fileno_croak (fh, 0);
1558 dREQ; 1801 dREQ;
1559 1802
1560 req->type = REQ_GROUP; 1803 req->type = EIO_CUSTOM;
1561 req_send (req); 1804 req->sv1 = newSVsv (fh);
1805 req->int1 = fd;
1562 1806
1563 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1807 req->feed = fiemap;
1564} 1808#if HAVE_FIEMAP
1809 /* keep our fingers crossed that the next two types are 64 bit */
1810 req->offs = start;
1811 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1812 req->int2 = flags;
1813 req->int3 = SvOK (count) ? SvIV (count) : -1;
1814#endif
1565 1815
1816 REQ_SEND;
1817}
1818
1566void 1819void
1567aio_nop (callback=&PL_sv_undef) 1820aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1568 SV * callback 1821 PPCODE:
1822{
1823 char *svptr = 0;
1824
1825 sv_clear_foreign (data);
1826
1827 if (length) /* known length, directly read into scalar */
1828 {
1829 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1830 svptr = sv_grow (data, length + 1);
1831 else if (SvCUR (data) < length)
1832 croak ("length outside of scalar, and cannot grow");
1833 else
1834 svptr = SvPVbyte_nolen (data);
1835 }
1836
1837 {
1838 dREQ;
1839
1840 req->type = EIO_SLURP;
1841 req_set_path1 (req, pathname);
1842 req->offs = offset;
1843 req->size = length;
1844 req->sv2 = SvREFCNT_inc (data);
1845 req->ptr2 = svptr;
1846
1847 if (!SvREADONLY (data))
1848 {
1849 SvREADONLY_on (data);
1850 req->flags |= FLAG_SV2_RO_OFF;
1851 }
1852
1853 REQ_SEND;
1854 }
1855}
1856
1857void
1858aio_busy (double delay, SV *callback = &PL_sv_undef)
1569 PPCODE: 1859 PPCODE:
1570{ 1860{
1571 dREQ; 1861 dREQ;
1572 1862
1573 req->type = REQ_NOP; 1863 req->type = EIO_BUSY;
1864 req->nv1 = delay < 0. ? 0. : delay;
1574 1865
1575 REQ_SEND; 1866 REQ_SEND;
1576} 1867}
1577 1868
1869void
1870aio_group (SV *callback = &PL_sv_undef)
1871 PPCODE:
1872{
1873 dREQ;
1874
1875 req->type = EIO_GROUP;
1876
1877 PUTBACK;
1878 req_submit (req);
1879 SPAGAIN;
1880
1881 XPUSHs (req_sv (req, aio_grp_stash));
1882}
1883
1884void
1885aio_nop (SV *callback = &PL_sv_undef)
1886 ALIAS:
1887 aio_nop = EIO_NOP
1888 aio_sync = EIO_SYNC
1889 PPCODE:
1890{
1891 dREQ;
1892
1893 req->type = ix;
1894
1895 REQ_SEND;
1896}
1897
1578int 1898int
1579aioreq_pri (int pri = 0) 1899aioreq_pri (int pri = NO_INIT)
1580 PROTOTYPE: ;$
1581 CODE: 1900 CODE:
1582 RETVAL = next_pri - PRI_BIAS; 1901 RETVAL = next_pri;
1583 if (items > 0) 1902 if (items > 0)
1584 { 1903 {
1585 if (pri < PRI_MIN) pri = PRI_MIN; 1904 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1586 if (pri > PRI_MAX) pri = PRI_MAX; 1905 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1587 next_pri = pri + PRI_BIAS; 1906 next_pri = pri;
1588 } 1907 }
1589 OUTPUT: 1908 OUTPUT:
1590 RETVAL 1909 RETVAL
1591 1910
1592void 1911void
1593aioreq_nice (int nice = 0) 1912aioreq_nice (int nice = 0)
1594 CODE: 1913 CODE:
1595 nice = next_pri - nice; 1914 nice = next_pri - nice;
1596 if (nice < PRI_MIN) nice = PRI_MIN; 1915 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1597 if (nice > PRI_MAX) nice = PRI_MAX; 1916 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1598 next_pri = nice + PRI_BIAS; 1917 next_pri = nice;
1599 1918
1600void 1919void
1601flush () 1920flush ()
1602 PROTOTYPE:
1603 CODE: 1921 CODE:
1604 while (nreqs) 1922 while (eio_nreqs ())
1605 { 1923 {
1606 poll_wait (); 1924 poll_wait ();
1607 poll_cb (0); 1925 poll_cb ();
1608 } 1926 }
1609 1927
1610void 1928int
1611poll() 1929poll ()
1612 PROTOTYPE:
1613 CODE: 1930 CODE:
1614 if (nreqs)
1615 {
1616 poll_wait (); 1931 poll_wait ();
1617 poll_cb (0); 1932 RETVAL = poll_cb ();
1618 }
1619
1620int
1621poll_fileno()
1622 PROTOTYPE:
1623 CODE:
1624 RETVAL = respipe [0];
1625 OUTPUT: 1933 OUTPUT:
1626 RETVAL 1934 RETVAL
1627 1935
1628int 1936int
1937poll_fileno ()
1938 CODE:
1939 RETVAL = s_epipe_fd (&respipe);
1940 OUTPUT:
1941 RETVAL
1942
1943int
1629poll_cb(...) 1944poll_cb (...)
1630 PROTOTYPE: 1945 PROTOTYPE:
1631 CODE: 1946 CODE:
1632 RETVAL = poll_cb (); 1947 RETVAL = poll_cb ();
1633 OUTPUT: 1948 OUTPUT:
1634 RETVAL 1949 RETVAL
1635 1950
1636void 1951void
1637poll_wait() 1952poll_wait ()
1638 PROTOTYPE:
1639 CODE: 1953 CODE:
1640 if (nreqs)
1641 poll_wait (); 1954 poll_wait ();
1642 1955
1643int 1956int
1644nreqs() 1957nreqs ()
1645 PROTOTYPE:
1646 CODE: 1958 CODE:
1647 RETVAL = nreqs; 1959 RETVAL = eio_nreqs ();
1648 OUTPUT: 1960 OUTPUT:
1649 RETVAL 1961 RETVAL
1650 1962
1651int 1963int
1652nready() 1964nready ()
1653 PROTOTYPE:
1654 CODE: 1965 CODE:
1655 RETVAL = get_nready (); 1966 RETVAL = eio_nready ();
1656 OUTPUT: 1967 OUTPUT:
1657 RETVAL 1968 RETVAL
1658 1969
1659int 1970int
1660npending() 1971npending ()
1661 PROTOTYPE:
1662 CODE: 1972 CODE:
1663 RETVAL = get_npending (); 1973 RETVAL = eio_npending ();
1664 OUTPUT: 1974 OUTPUT:
1665 RETVAL 1975 RETVAL
1666 1976
1667int 1977int
1668nthreads() 1978nthreads ()
1669 PROTOTYPE:
1670 CODE: 1979 CODE:
1671 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1980 RETVAL = eio_nthreads ();
1672 RETVAL = started;
1673 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1674 OUTPUT: 1981 OUTPUT:
1675 RETVAL 1982 RETVAL
1676 1983
1984int
1985fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1986 CODE:
1987 RETVAL = posix_fadvise (fh, offset, length, advice);
1988 OUTPUT:
1989 RETVAL
1990
1991IV
1992sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1993 CODE:
1994 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1995 OUTPUT:
1996 RETVAL
1997
1998void
1999mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2000 PPCODE:
2001 sv_clear_foreign (scalar);
2002{
2003 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2004 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2005 if (addr == (void *)-1)
2006 XSRETURN_NO;
2007
2008 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2009
2010 if (!(prot & PROT_WRITE))
2011 SvREADONLY_on (scalar);
2012
2013 XSRETURN_YES;
2014}
2015
2016void
2017munmap (SV *scalar)
2018 CODE:
2019 sv_clear_foreign (scalar);
2020
2021int
2022madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2023 ALIAS:
2024 mprotect = 1
2025 CODE:
2026{
2027 STRLEN svlen;
2028 void *addr = SvPVbyte (scalar, svlen);
2029 STRLEN len = SvUV (length);
2030
2031 if (offset < 0)
2032 offset += svlen;
2033
2034 if (offset < 0 || offset > svlen)
2035 croak ("offset outside of scalar");
2036
2037 if (!SvOK (length) || len + offset > svlen)
2038 len = svlen - offset;
2039
2040 addr = (void *)(((intptr_t)addr) + offset);
2041 eio_page_align (&addr, &len);
2042
2043 switch (ix)
2044 {
2045 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2046 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2047 }
2048}
2049 OUTPUT:
2050 RETVAL
2051
2052int
2053munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2054 CODE:
2055{
2056 STRLEN svlen;
2057 void *addr = SvPVbyte (scalar, svlen);
2058 size_t len = SvUV (length);
2059
2060 if (offset < 0)
2061 offset += svlen;
2062
2063 if (offset < 0 || offset > svlen)
2064 croak ("offset outside of scalar");
2065
2066 if (!SvOK (length) || len + offset > svlen)
2067 len = svlen - offset;
2068
2069 addr = (void *)(((intptr_t)addr) + offset);
2070 eio_page_align (&addr, &len);
2071#if _POSIX_MEMLOCK_RANGE
2072 RETVAL = munlock (addr, len);
2073#else
2074 RETVAL = EIO_ENOSYS ();
2075#endif
2076}
2077 OUTPUT:
2078 RETVAL
2079
2080int
2081munlockall ()
2082 CODE:
2083#if _POSIX_MEMLOCK
2084 munlockall ();
2085#else
2086 RETVAL = EIO_ENOSYS ();
2087#endif
2088 OUTPUT:
2089 RETVAL
2090
2091int
2092splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2093 CODE:
2094{
2095#if HAVE_LINUX_SPLICE
2096 loff_t off_in_, off_out_;
2097 RETVAL = splice (
2098 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2099 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2100 length, flags
2101 );
2102#else
2103 RETVAL = EIO_ENOSYS ();
2104#endif
2105}
2106 OUTPUT:
2107 RETVAL
2108
2109int
2110tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2111 CODE:
2112#if HAVE_LINUX_SPLICE
2113 RETVAL = tee (rfh, wfh, length, flags);
2114#else
2115 RETVAL = EIO_ENOSYS ();
2116#endif
2117 OUTPUT:
2118 RETVAL
2119
2120int
2121pipesize (aio_rfd rfh, int new_size = -1)
2122 PROTOTYPE: $;$
2123 CODE:
2124#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2125 if (new_size >= 0)
2126 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2127 else
2128 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2129#else
2130 errno = ENOSYS;
2131 RETVAL = -1;
2132#endif
2133 OUTPUT:
2134 RETVAL
2135
2136void
2137pipe2 (int flags = 0)
2138 PROTOTYPE: ;$
2139 PPCODE:
2140{
2141 int fd[2];
2142 int res;
2143
2144 if (flags)
2145#if HAVE_PIPE2
2146 res = pipe2 (fd, flags);
2147#else
2148 res = (errno = ENOSYS, -1);
2149#endif
2150 else
2151 res = pipe (fd);
2152
2153 if (!res)
2154 {
2155 EXTEND (SP, 2);
2156 PUSHs (newmortalFH (fd[0], O_RDONLY));
2157 PUSHs (newmortalFH (fd[1], O_WRONLY));
2158 }
2159}
2160
2161UV
2162get_fdlimit ()
2163 CODE:
2164#if HAVE_RLIMITS
2165 struct rlimit rl;
2166 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2167 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2168#endif
2169 XSRETURN_UNDEF;
2170 OUTPUT:
2171 RETVAL
2172
2173void
2174min_fdlimit (UV limit = 0x7fffffffU)
2175 CODE:
2176{
2177#if HAVE_RLIMITS
2178 struct rlimit rl;
2179 rlim_t orig_rlim_max;
2180 UV bit;
2181
2182 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2183 goto fail;
2184
2185 if (rl.rlim_cur == RLIM_INFINITY)
2186 XSRETURN_YES;
2187
2188 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2189
2190 if (rl.rlim_cur < limit)
2191 {
2192 rl.rlim_cur = limit;
2193
2194 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2195 rl.rlim_max = rl.rlim_cur;
2196 }
2197
2198 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2199 XSRETURN_YES;
2200
2201 if (errno == EPERM)
2202 {
2203 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2204 /* our limit overflows a system-wide limit */
2205 /* try an adaptive algorithm, but do not lower the hardlimit */
2206 rl.rlim_max = 0;
2207 for (bit = 0x40000000U; bit; bit >>= 1)
2208 {
2209 rl.rlim_max |= bit;
2210 rl.rlim_cur = rl.rlim_max;
2211
2212 /* nevr decrease the hard limit */
2213 if (rl.rlim_max < orig_rlim_max)
2214 break;
2215
2216 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2217 rl.rlim_max &= ~bit; /* too high, remove bit again */
2218 }
2219
2220 /* now, raise the soft limit to the max permitted */
2221 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2222 {
2223 rl.rlim_cur = rl.rlim_max;
2224 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2225 errno = EPERM;
2226 }
2227 }
2228#endif
2229 fail:
2230 XSRETURN_UNDEF;
2231}
2232
2233void _on_next_submit (SV *cb)
2234 CODE:
2235 SvREFCNT_dec (on_next_submit);
2236 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2237
1677PROTOTYPES: DISABLE 2238PROTOTYPES: DISABLE
2239
2240MODULE = IO::AIO PACKAGE = IO::AIO::WD
2241
2242BOOT:
2243{
2244 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2245 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2246}
2247
2248void
2249DESTROY (SV *self)
2250 CODE:
2251{
2252 aio_wd wd = SvAIO_WD (self);
2253#if HAVE_AT
2254 {
2255 SV *callback = &PL_sv_undef;
2256 dREQ; /* clobbers next_pri :/ */
2257 next_pri = req->pri; /* restore next_pri */
2258 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2259 req->type = EIO_WD_CLOSE;
2260 req->wd = wd;
2261 REQ_SEND;
2262 }
2263#else
2264 eio_wd_close_sync (wd);
2265#endif
2266}
1678 2267
1679MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2268MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1680 2269
1681void 2270void
1682cancel (aio_req_ornot req) 2271cancel (aio_req_ornot req)
1683 CODE: 2272 CODE:
1684 req_cancel (req); 2273 eio_cancel (req);
1685 2274
1686void 2275void
1687cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2276cb (aio_req_ornot req, SV *callback = NO_INIT)
1688 CODE: 2277 PPCODE:
2278{
2279 if (GIMME_V != G_VOID)
2280 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2281
2282 if (items > 1)
2283 {
2284 SV *cb_cv = get_cb (callback);
2285
1689 SvREFCNT_dec (req->callback); 2286 SvREFCNT_dec (req->callback);
1690 req->callback = newSVsv (callback); 2287 req->callback = SvREFCNT_inc (cb_cv);
2288 }
2289}
1691 2290
1692MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2291MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1693 2292
1694void 2293void
1695add (aio_req grp, ...) 2294add (aio_req grp, ...)
1696 PPCODE: 2295 PPCODE:
1697{ 2296{
1698 int i; 2297 int i;
1699 aio_req req;
1700 2298
1701 if (grp->fd == 2) 2299 if (grp->int1 == 2)
1702 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2300 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1703 2301
1704 for (i = 1; i < items; ++i ) 2302 for (i = 1; i < items; ++i )
1705 { 2303 {
2304 aio_req req;
2305
1706 if (GIMME_V != G_VOID) 2306 if (GIMME_V != G_VOID)
1707 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2307 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1708 2308
1709 req = SvAIO_REQ (ST (i)); 2309 req = SvAIO_REQ (ST (i));
1710 2310
1711 if (req) 2311 if (req)
1712 { 2312 eio_grp_add (grp, req);
1713 ++grp->length;
1714 req->grp = grp;
1715
1716 req->grp_prev = 0;
1717 req->grp_next = grp->grp_first;
1718
1719 if (grp->grp_first)
1720 grp->grp_first->grp_prev = req;
1721
1722 grp->grp_first = req;
1723 }
1724 } 2313 }
1725} 2314}
1726 2315
1727void 2316void
1728cancel_subs (aio_req_ornot req) 2317cancel_subs (aio_req_ornot req)
… …
1737 AV *av; 2326 AV *av;
1738 2327
1739 grp->errorno = errno; 2328 grp->errorno = errno;
1740 2329
1741 av = newAV (); 2330 av = newAV ();
2331 av_extend (av, items - 1);
1742 2332
1743 for (i = 1; i < items; ++i ) 2333 for (i = 1; i < items; ++i )
1744 av_push (av, newSVsv (ST (i))); 2334 av_push (av, newSVsv (ST (i)));
1745 2335
1746 SvREFCNT_dec (grp->data); 2336 SvREFCNT_dec (grp->sv1);
1747 grp->data = (SV *)av; 2337 grp->sv1 = (SV *)av;
1748} 2338}
1749 2339
1750void 2340void
1751errno (aio_req grp, int errorno = errno) 2341errno (aio_req grp, int errorno = errno)
1752 CODE: 2342 CODE:
1753 grp->errorno = errorno; 2343 grp->errorno = errorno;
1754 2344
1755void 2345void
1756limit (aio_req grp, int limit) 2346limit (aio_req grp, int limit)
1757 CODE: 2347 CODE:
1758 grp->fd2 = limit; 2348 eio_grp_limit (grp, limit);
1759 aio_grp_feed (grp);
1760 2349
1761void 2350void
1762feed (aio_req grp, SV *callback=&PL_sv_undef) 2351feed (aio_req grp, SV *callback = &PL_sv_undef)
1763 CODE: 2352 CODE:
1764{ 2353{
1765 SvREFCNT_dec (grp->fh2); 2354 SvREFCNT_dec (grp->sv2);
1766 grp->fh2 = newSVsv (callback); 2355 grp->sv2 = newSVsv (callback);
2356 grp->feed = aio_grp_feed;
1767 2357
1768 if (grp->fd2 <= 0) 2358 if (grp->int2 <= 0)
1769 grp->fd2 = 2; 2359 grp->int2 = 2;
1770 2360
1771 aio_grp_feed (grp); 2361 eio_grp_limit (grp, grp->int2);
1772} 2362}
1773 2363

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