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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.112 by root, Tue Apr 1 19:40:47 2008 UTC vs.
Revision 1.228 by root, Fri Jan 24 23:46:16 2014 UTC

1#include "xthread.h" 1#include "libeio/xthread.h"
2 2
3#include <errno.h> 3#include <errno.h>
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8
9#include "schmorp.h"
8 10
9#include <stddef.h> 11#include <stddef.h>
10#include <stdlib.h> 12#include <stdlib.h>
11#include <errno.h> 13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14#include <limits.h> 16#include <limits.h>
15#include <fcntl.h> 17#include <fcntl.h>
16#include <sched.h> 18#include <sched.h>
17 19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
30# endif
31#endif
32
33/* perl namespace pollution */
34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
18#ifdef _WIN32 42#ifdef _WIN32
19 43
20# define SIGIO 0 44 // perl overrides all those nice libc functions
21 typedef Direntry_t X_DIRENT; 45
22#undef malloc 46 #undef malloc
23#undef free 47 #undef free
24
25// perl overrides all those nice win32 functions
26# undef open 48 #undef open
27# undef read 49 #undef read
28# undef write 50 #undef write
29# undef send 51 #undef send
30# undef recv 52 #undef recv
31# undef stat 53 #undef stat
54 #undef lstat
32# undef fstat 55 #undef fstat
33# define lstat stat
34# undef truncate 56 #undef truncate
35# undef ftruncate 57 #undef ftruncate
36# undef open 58 #undef open
59 #undef link
37# undef close 60 #undef close
38# undef unlink 61 #undef unlink
62 #undef mkdir
39# undef rmdir 63 #undef rmdir
40# undef rename 64 #undef rename
41# undef lseek 65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
42 75
43# define chown(a,b,c) (errno = ENOSYS, -1) 76 #define EIO_STRUCT_STAT struct _stati64
44# define fchown(a,b,c) (errno = ENOSYS, -1) 77 #define EIO_STRUCT_STATI64
45# define fchmod(a,b) (errno = ENOSYS, -1)
46# define symlink(a,b) (errno = ENOSYS, -1)
47# define readlink(a,b,c) (errno = ENOSYS, -1)
48# define mknod(a,b,c) (errno = ENOSYS, -1)
49# define truncate(a,b) (errno = ENOSYS, -1)
50# define ftruncate(fd,o) chsize ((fd), (o))
51# define fsync(fd) _commit (fd)
52# define opendir(fd) (errno = ENOSYS, 0)
53# define readdir(fd) (errno = ENOSYS, -1)
54# define closedir(fd) (errno = ENOSYS, -1)
55# define mkdir(a,b) mkdir (a)
56 78
57#else 79#else
58 80
59# include "autoconf/config.h"
60# include <sys/time.h> 81 #include <sys/time.h>
61# include <sys/select.h> 82 #include <sys/select.h>
62# include <unistd.h> 83 #include <unistd.h>
63# include <utime.h> 84 #include <utime.h>
64# include <signal.h> 85 #include <signal.h>
65 typedef struct dirent X_DIRENT;
66 86
67#endif 87 #define EIO_STRUCT_STAT Stat_t
68 88
69#if HAVE_SENDFILE 89#endif
70# if __linux 90
71# include <sys/sendfile.h> 91/*****************************************************************************/
72# elif __freebsd 92
73# include <sys/socket.h> 93#if __GNUC__ >= 3
74# include <sys/uio.h> 94# define expect(expr,value) __builtin_expect ((expr),(value))
75# elif __hpux 95#else
76# include <sys/socket.h> 96# define expect(expr,value) (expr)
77# elif __solaris /* not yet */ 97#endif
78# include <sys/sendfile.h> 98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 SV *sv3, *sv4; \
114 STRLEN stroffset; \
115 SV *self;
116
117#define EIO_NO_WRAPPERS 1
118
119#include "libeio/config.h"
120#include "libeio/eio.h"
121
122static int req_invoke (eio_req *req);
123#define EIO_FINISH(req) req_invoke (req)
124static void req_destroy (eio_req *grp);
125#define EIO_DESTROY(req) req_destroy (req)
126
127#include "libeio/eio.c"
128
129#if !HAVE_POSIX_FADVISE
130# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
131#endif
132
133#if !HAVE_POSIX_MADVISE
134# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#ifndef MAP_ANONYMOUS
138# ifdef MAP_ANON
139# define MAP_ANONYMOUS MAP_ANON
79# else 140# else
80# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81# endif 142# endif
82#endif 143#endif
83 144
84/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
85#define IDLE_TIMEOUT 10 146#include "def0.h"
86 147
87/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
88#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
89# define NAME_MAX 4096
90#endif 150#endif
91 151#ifndef major
92/* buffer size for various temporary buffers */ 152# define major(dev) ((dev) >> 8)
93#define AIO_BUFSIZE 65536
94
95/* use NV for 32 bit perls as it allows larger offsets */
96#if IVSIZE >= 8
97# define SvVAL64 SvIV
98#else
99# define SvVAL64 SvNV
100#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
101 157
102static HV *stash; 158#if PAGESIZE <= 0
159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
103 161
104#define dBUF \ 162/*****************************************************************************/
105 char *aio_buf; \
106 X_LOCK (wrklock); \
107 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
108 X_UNLOCK (wrklock); \
109 if (!aio_buf) \
110 return -1;
111 163
112typedef SV SV8; /* byte-sv, used for argument-checking */ 164static void
113 165fiemap (eio_req *req)
114enum {
115 REQ_QUIT,
116 REQ_OPEN, REQ_CLOSE,
117 REQ_READ, REQ_WRITE,
118 REQ_READAHEAD, REQ_SENDFILE,
119 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120 REQ_TRUNCATE, REQ_FTRUNCATE,
121 REQ_UTIME, REQ_FUTIME,
122 REQ_CHMOD, REQ_FCHMOD,
123 REQ_CHOWN, REQ_FCHOWN,
124 REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126 REQ_MKNOD, REQ_READDIR,
127 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128 REQ_GROUP, REQ_NOP,
129 REQ_BUSY,
130};
131
132#define AIO_REQ_KLASS "IO::AIO::REQ"
133#define AIO_GRP_KLASS "IO::AIO::GRP"
134
135typedef struct aio_cb
136{ 166{
137 struct aio_cb *volatile next; 167 req->result = -1;
138 168
139 SV *callback; 169#if HAVE_FIEMAP
140 SV *sv1, *sv2; 170 /* assume some c99 */
141 void *ptr1, *ptr2; 171 struct fiemap *fiemap = 0;
142 off_t offs; 172 size_t end_offset;
143 size_t size; 173 int count = req->int3;
144 ssize_t result;
145 double nv1, nv2;
146 174
147 STRLEN stroffset; 175 req->flags |= EIO_FLAG_PTR1_FREE;
148 int type;
149 int int1, int2, int3;
150 int errorno;
151 mode_t mode; /* open */
152 176
153 unsigned char flags; 177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
154 unsigned char pri; 178 /* increase in 3.5kb steps */
179 if (count < 0)
180 count = 8;
155 181
156 SV *self; /* the perl counterpart of this request, if any */ 182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
157 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 183 errno = ENOMEM;
158} aio_cb; 184 if (!fiemap)
159
160enum {
161 FLAG_CANCELLED = 0x01, /* request was cancelled */
162 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164};
165
166typedef aio_cb *aio_req;
167typedef aio_cb *aio_req_ornot;
168
169enum {
170 PRI_MIN = -4,
171 PRI_MAX = 4,
172
173 DEFAULT_PRI = 0,
174 PRI_BIAS = -PRI_MIN,
175 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176};
177
178#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180static unsigned int max_poll_time = 0;
181static unsigned int max_poll_reqs = 0;
182
183/* calculcate time difference in ~1/AIO_TICKS of a second */
184static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185{
186 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
188}
189
190static thread_t main_tid;
191static int main_sig;
192static int block_sig_level;
193
194void block_sig (void)
195{
196 sigset_t ss;
197
198 if (block_sig_level++)
199 return; 185 return;
200 186
201 if (!main_sig) 187 req->ptr1 = fiemap;
188
189 fiemap->fm_start = req->offs;
190 fiemap->fm_length = req->size;
191 fiemap->fm_flags = req->int2;
192 fiemap->fm_extent_count = count;
193
194 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
202 return; 195 return;
203 196
204 sigemptyset (&ss); 197 if (req->int3 >= 0 /* not autosizing */
205 sigaddset (&ss, main_sig); 198 || !fiemap->fm_mapped_extents /* no more extents */
206 pthread_sigmask (SIG_BLOCK, &ss, 0); 199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207} 200 goto done;
208 201
209void unblock_sig (void) 202 /* else we have to loop -
210{ 203 * it would be tempting (actually I tried that first) to just query the
211 sigset_t ss; 204 * number of extents needed, but linux often feels like not returning all
205 * extents, without telling us it left any out. this complicates
206 * this quite a bit.
207 */
212 208
213 if (--block_sig_level) 209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214 return;
215 210
216 if (!main_sig) 211 for (;;)
217 return;
218
219 sigemptyset (&ss);
220 sigaddset (&ss, main_sig);
221 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222}
223
224static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226static unsigned int started, idle, wanted;
227
228/* worker threads management */
229static mutex_t wrklock = X_MUTEX_INIT;
230
231typedef struct worker {
232 /* locked by wrklock */
233 struct worker *prev, *next;
234
235 thread_t tid;
236
237 /* locked by reslock, reqlock or wrklock */
238 aio_req req; /* currently processed request */
239 void *dbuf;
240 DIR *dirp;
241} worker;
242
243static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245static void worker_clear (worker *wrk)
246{
247 if (wrk->dirp)
248 { 212 {
249 closedir (wrk->dirp); 213 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
250 wrk->dirp = 0; 214 char scratch[3072];
251 } 215 struct fiemap *incmap = (struct fiemap *)scratch;
252 216
253 if (wrk->dbuf) 217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254 { 218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255 free (wrk->dbuf); 219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256 wrk->dbuf = 0; 220 incmap->fm_flags = fiemap->fm_flags;
257 } 221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258}
259 222
260static void worker_free (worker *wrk) 223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
261{
262 wrk->next->prev = wrk->prev;
263 wrk->prev->next = wrk->next;
264
265 free (wrk);
266}
267
268static volatile unsigned int nreqs, nready, npending;
269static volatile unsigned int max_idle = 4;
270static volatile unsigned int max_outstanding = 0xffffffff;
271static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273static mutex_t reslock = X_MUTEX_INIT;
274static mutex_t reqlock = X_MUTEX_INIT;
275static cond_t reqwait = X_COND_INIT;
276
277#if WORDACCESS_UNSAFE
278
279static unsigned int get_nready (void)
280{
281 unsigned int retval;
282
283 X_LOCK (reqlock);
284 retval = nready;
285 X_UNLOCK (reqlock);
286
287 return retval;
288}
289
290static unsigned int get_npending (void)
291{
292 unsigned int retval;
293
294 X_LOCK (reslock);
295 retval = npending;
296 X_UNLOCK (reslock);
297
298 return retval;
299}
300
301static unsigned int get_nthreads (void)
302{
303 unsigned int retval;
304
305 X_LOCK (wrklock);
306 retval = started;
307 X_UNLOCK (wrklock);
308
309 return retval;
310}
311
312#else
313
314# define get_nready() nready
315# define get_npending() npending
316# define get_nthreads() started
317
318#endif
319
320/*
321 * a somewhat faster data structure might be nice, but
322 * with 8 priorities this actually needs <20 insns
323 * per shift, the most expensive operation.
324 */
325typedef struct {
326 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327 int size;
328} reqq;
329
330static reqq req_queue;
331static reqq res_queue;
332
333int reqq_push (reqq *q, aio_req req)
334{
335 int pri = req->pri;
336 req->next = 0;
337
338 if (q->qe[pri])
339 {
340 q->qe[pri]->next = req;
341 q->qe[pri] = req;
342 }
343 else
344 q->qe[pri] = q->qs[pri] = req;
345
346 return q->size++;
347}
348
349aio_req reqq_shift (reqq *q)
350{
351 int pri;
352
353 if (!q->size)
354 return 0; 224 return;
355 225
356 --q->size; 226 if (!incmap->fm_mapped_extents)
227 goto done;
357 228
358 for (pri = NUM_PRI; pri--; ) 229 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359 { 230 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360 aio_req req = q->qs[pri]; 231 errno = ENOMEM;
361
362 if (req) 232 if (!fiemap)
233 return;
234
235 req->ptr1 = fiemap;
236
237 for (count = 0; count < incmap->fm_mapped_extents; ++count)
363 { 238 {
364 if (!(q->qs[pri] = req->next)) 239 struct fiemap_extent *e = incmap->fm_extents + count;
365 q->qe[pri] = 0;
366 240
367 return req; 241 if (e->fe_logical + e->fe_length >= end_offset)
242 goto done;
243
244 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
245
246 if (e->fe_flags & FIEMAP_EXTENT_LAST)
247 goto done;
248
368 } 249 }
369 } 250 }
370 251
371 abort (); 252done:
372} 253 req->result = 0;
373 254
374static int poll_cb (void); 255#else
375static int req_invoke (aio_req req); 256 errno = ENOSYS;
257#endif
258}
259
260/*****************************************************************************/
261
262enum {
263 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
264};
265
266typedef eio_req *aio_req;
267typedef eio_req *aio_req_ornot;
268typedef eio_wd aio_wd;
269
270static SV *on_next_submit;
271static int next_pri = EIO_PRI_DEFAULT;
272static int max_outstanding;
273
274static s_epipe respipe;
275
376static void req_destroy (aio_req req); 276static void req_destroy (aio_req req);
377static void req_cancel (aio_req req); 277static void req_cancel (aio_req req);
378 278
279static void
280want_poll (void)
281{
282 /* write a dummy byte to the pipe so fh becomes ready */
283 s_epipe_signal (&respipe);
284}
285
286static void
287done_poll (void)
288{
289 /* read any signals sent by the worker threads */
290 s_epipe_drain (&respipe);
291}
292
379/* must be called at most once */ 293/* must be called at most once */
380static SV *req_sv (aio_req req, const char *klass) 294static SV *
295req_sv (aio_req req, HV *stash)
381{ 296{
382 if (!req->self) 297 if (!req->self)
383 { 298 {
384 req->self = (SV *)newHV (); 299 req->self = (SV *)newHV ();
385 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 300 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386 } 301 }
387 302
388 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 303 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389} 304}
390 305
391static aio_req SvAIO_REQ (SV *sv) 306static SV *
307newSVaio_wd (aio_wd wd)
308{
309 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
310}
311
312static aio_req
313SvAIO_REQ (SV *sv)
392{ 314{
393 MAGIC *mg; 315 MAGIC *mg;
394 316
395 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 317 if (!SvROK (sv)
318 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
319 || (SvSTASH (SvRV (sv)) != aio_grp_stash
320 && SvSTASH (SvRV (sv)) != aio_req_stash
321 && !sv_derived_from (sv, "IO::AIO::REQ")))
396 croak ("object of class " AIO_REQ_KLASS " expected"); 322 croak ("object of class IO::AIO::REQ expected");
397 323
398 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 324 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399 325
400 return mg ? (aio_req)mg->mg_ptr : 0; 326 return mg ? (aio_req)mg->mg_ptr : 0;
401} 327}
402 328
329static aio_wd
330SvAIO_WD (SV *sv)
331{
332 if (!SvROK (sv)
333 || SvTYPE (SvRV (sv)) != SVt_PVMG
334 || SvSTASH (SvRV (sv)) != aio_wd_stash)
335 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
336
337 return (aio_wd)(long)SvIVX (SvRV (sv));
338}
339
340static void
403static void aio_grp_feed (aio_req grp) 341aio_grp_feed (aio_req grp)
404{ 342{
405 block_sig (); 343 if (grp->sv2 && SvOK (grp->sv2))
406
407 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408 { 344 {
409 int old_len = grp->size;
410
411 if (grp->sv2 && SvOK (grp->sv2))
412 {
413 dSP; 345 dSP;
414 346
415 ENTER; 347 ENTER;
416 SAVETMPS; 348 SAVETMPS;
417 PUSHMARK (SP); 349 PUSHMARK (SP);
418 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 350 XPUSHs (req_sv (grp, aio_grp_stash));
419 PUTBACK; 351 PUTBACK;
420 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 352 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421 SPAGAIN; 353 SPAGAIN;
422 FREETMPS; 354 FREETMPS;
423 LEAVE; 355 LEAVE;
424 }
425
426 /* stop if no progress has been made */
427 if (old_len == grp->size)
428 {
429 SvREFCNT_dec (grp->sv2);
430 grp->sv2 = 0;
431 break;
432 }
433 } 356 }
434
435 unblock_sig ();
436} 357}
437 358
438static void aio_grp_dec (aio_req grp) 359static void
360req_submit (eio_req *req)
439{ 361{
440 --grp->size; 362 eio_submit (req);
441 363
442 /* call feeder, if applicable */ 364 if (expect_false (on_next_submit))
443 aio_grp_feed (grp);
444
445 /* finish, if done */
446 if (!grp->size && grp->int1)
447 { 365 {
448 block_sig (); 366 dSP;
367 SV *cb = sv_2mortal (on_next_submit);
449 368
450 if (!req_invoke (grp)) 369 on_next_submit = 0;
451 {
452 req_destroy (grp);
453 unblock_sig ();
454 croak (0);
455 }
456 370
457 req_destroy (grp); 371 PUSHMARK (SP);
458 unblock_sig (); 372 PUTBACK;
373 call_sv (cb, G_DISCARD | G_EVAL);
459 } 374 }
460} 375}
461 376
377static int
462static int req_invoke (aio_req req) 378req_invoke (eio_req *req)
463{ 379{
464 dSP;
465
466 if (req->flags & FLAG_SV2_RO_OFF) 380 if (req->flags & FLAG_SV2_RO_OFF)
467 SvREADONLY_off (req->sv2); 381 SvREADONLY_off (req->sv2);
468 382
469 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 383 if (!EIO_CANCELLED (req) && req->callback)
470 { 384 {
385 dSP;
386 static SV *sv_result_cache; /* caches the result integer SV */
387 SV *sv_result;
388
471 ENTER; 389 ENTER;
472 SAVETMPS; 390 SAVETMPS;
473 PUSHMARK (SP); 391 PUSHMARK (SP);
474 EXTEND (SP, 1); 392 EXTEND (SP, 1);
475 393
394 /* do not recreate the result IV from scratch each time */
395 if (expect_true (sv_result_cache))
396 {
397 sv_result = sv_result_cache; sv_result_cache = 0;
398 SvIV_set (sv_result, req->result);
399 SvIOK_only (sv_result);
400 }
401 else
402 {
403 sv_result = newSViv (req->result);
404 SvREADONLY_on (sv_result);
405 }
406
476 switch (req->type) 407 switch (req->type)
477 { 408 {
409 case EIO_WD_OPEN:
410 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
411 break;
412
478 case REQ_READDIR: 413 case EIO_READDIR:
479 { 414 {
480 SV *rv = &PL_sv_undef; 415 SV *rv = &PL_sv_undef;
481 416
482 if (req->result >= 0) 417 if (req->result >= 0)
483 { 418 {
484 int i; 419 int i;
485 char *buf = req->ptr2; 420 char *names = (char *)req->ptr2;
421 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486 AV *av = newAV (); 422 AV *av = newAV ();
487 423
488 av_extend (av, req->result - 1); 424 av_extend (av, req->result - 1);
489 425
490 for (i = 0; i < req->result; ++i) 426 for (i = 0; i < req->result; ++i)
491 { 427 {
492 SV *sv = newSVpv (buf, 0); 428 if (req->int1 & EIO_READDIR_DENTS)
429 {
430 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493 431
432 if (req->int1 & EIO_READDIR_CUSTOM2)
433 {
434 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
435 AV *avent = newAV ();
436
437 av_extend (avent, 2);
438
439 if (!sv_type [ent->type])
440 {
441 sv_type [ent->type] = newSViv (ent->type);
442 SvREADONLY_on (sv_type [ent->type]);
443 }
444
445 av_store (avent, 0, namesv);
446 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
447 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
448
449 av_store (av, i, newRV_noinc ((SV *)avent));
450 }
451 else
494 av_store (av, i, sv); 452 av_store (av, i, namesv);
453
454 ++ent;
455 }
456 else
457 {
458 SV *name = newSVpv (names, 0);
459 av_store (av, i, name);
495 buf += SvCUR (sv) + 1; 460 names += SvCUR (name) + 1;
461 }
496 } 462 }
497 463
498 rv = sv_2mortal (newRV_noinc ((SV *)av)); 464 rv = sv_2mortal (newRV_noinc ((SV *)av));
499 } 465 }
500 466
501 PUSHs (rv); 467 PUSHs (rv);
468
469 if (req->int1 & EIO_READDIR_CUSTOM1)
470 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502 } 471 }
503 break; 472 break;
504 473
505 case REQ_OPEN: 474 case EIO_OPEN:
506 { 475 {
507 /* convert fd to fh */ 476 /* convert fd to fh */
508 SV *fh = &PL_sv_undef; 477 SV *fh = &PL_sv_undef;
509 478
510 if (req->result >= 0) 479 if (req->result >= 0)
… …
512 GV *gv = (GV *)sv_newmortal (); 481 GV *gv = (GV *)sv_newmortal ();
513 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR); 482 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514 char sym [64]; 483 char sym [64];
515 int symlen; 484 int symlen;
516 485
517 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result); 486 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518 gv_init (gv, stash, sym, symlen, 0); 487 gv_init (gv, aio_stash, sym, symlen, 0);
519 488
520 symlen = snprintf ( 489 symlen = snprintf (
521 sym, 490 sym,
522 sizeof (sym), 491 sizeof (sym),
523 "%s&=%d", 492 "%s&=%d",
524 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<", 493 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525 req->result 494 (int)req->result
526 ); 495 );
527 496
528 if (do_open (gv, sym, symlen, 0, 0, 0, 0)) 497 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529 fh = (SV *)gv; 498 fh = (SV *)gv;
530 } 499 }
531 500
532 PUSHs (fh); 501 PUSHs (fh);
533 } 502 }
534 break; 503 break;
535 504
505 case EIO_STATVFS:
506 case EIO_FSTATVFS:
507 {
508 SV *rv = &PL_sv_undef;
509
510#ifndef _WIN32
511 if (req->result >= 0)
512 {
513 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
514 HV *hv = newHV ();
515 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
516 * chooses to make it a struct.
517 */
518 unsigned long fsid = 0;
519 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
520
521 rv = sv_2mortal (newRV_noinc ((SV *)hv));
522
523 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
524 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
525 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
526 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
527 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
528 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
529 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
530 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
531 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
532 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
533 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
534 }
535#endif
536
537 PUSHs (rv);
538 }
539
540 break;
541
536 case REQ_GROUP: 542 case EIO_GROUP:
537 req->int1 = 2; /* mark group as finished */ 543 req->int1 = 2; /* mark group as finished */
538 544
539 if (req->sv1) 545 if (req->sv1)
540 { 546 {
541 int i; 547 int i;
… …
545 for (i = 0; i <= AvFILL (av); ++i) 551 for (i = 0; i <= AvFILL (av); ++i)
546 PUSHs (*av_fetch (av, i, 0)); 552 PUSHs (*av_fetch (av, i, 0));
547 } 553 }
548 break; 554 break;
549 555
550 case REQ_NOP: 556 case EIO_NOP:
551 case REQ_BUSY: 557 case EIO_BUSY:
552 break; 558 break;
553 559
554 case REQ_READLINK: 560 case EIO_READLINK:
561 case EIO_REALPATH:
555 if (req->result > 0) 562 if (req->result > 0)
563 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
564 break;
565
566 case EIO_STAT:
567 case EIO_LSTAT:
568 case EIO_FSTAT:
569 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
570
571 if (!(PL_laststatval = req->result))
572 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
573 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
574
575 PUSHs (sv_result);
576 break;
577
578 case EIO_SEEK:
579 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
580 break;
581
582 case EIO_READ:
583 {
584 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
585 *SvEND (req->sv2) = 0;
586 SvPOK_only (req->sv2);
587 SvSETMAGIC (req->sv2);
588 PUSHs (sv_result);
589 }
590 break;
591
592 case EIO_CUSTOM:
593 if (req->feed == fiemap)
556 { 594 {
557 SvCUR_set (req->sv2, req->result); 595#if HAVE_FIEMAP
558 *SvEND (req->sv2) = 0;
559 PUSHs (req->sv2); 596 if (!req->result)
597 {
598 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
599
600 if (fiemap->fm_extent_count)
601 {
602 AV *av = newAV ();
603 int i;
604
605 while (fiemap->fm_mapped_extents)
606 {
607 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
608 AV *ext_av = newAV ();
609
610 av_store (ext_av, 3, newSVuv (extent->fe_flags));
611 av_store (ext_av, 2, newSVval64 (extent->fe_length));
612 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
613 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
614
615 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
616 }
617
618 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
619 }
620 else
621 {
622 SvIV_set (sv_result, fiemap->fm_mapped_extents);
623 PUSHs (sv_result);
624 }
625 }
626#endif
560 } 627 }
628 else
629 PUSHs (sv_result);
561 break; 630 break;
562 631
563 case REQ_STAT: 632 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564 case REQ_LSTAT: 633 if (req->result > 0)
565 case REQ_FSTAT: 634 SvIV_set (sv_result, 0);
566 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 635 /* FALLTHROUGH */
567 PL_laststatval = req->result;
568 PL_statcache = *(Stat_t *)(req->ptr2);
569 PUSHs (sv_2mortal (newSViv (req->result)));
570 break;
571
572 case REQ_READ:
573 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574 *SvEND (req->sv2) = 0;
575 PUSHs (sv_2mortal (newSViv (req->result)));
576 break;
577 636
578 default: 637 default:
579 PUSHs (sv_2mortal (newSViv (req->result))); 638 PUSHs (sv_result);
580 break; 639 break;
581 } 640 }
582 641
583 errno = req->errorno; 642 errno = req->errorno;
584 643
585 PUTBACK; 644 PUTBACK;
586 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); 645 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587 SPAGAIN; 646 SPAGAIN;
588 647
648 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
649 SvREFCNT_dec (sv_result);
650 else
651 sv_result_cache = sv_result;
652
589 FREETMPS; 653 FREETMPS;
590 LEAVE; 654 LEAVE;
591 655
592 PUTBACK; 656 PUTBACK;
593 } 657 }
594 658
595 if (req->grp)
596 {
597 aio_req grp = req->grp;
598
599 /* unlink request */
600 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603 if (grp->grp_first == req)
604 grp->grp_first = req->grp_next;
605
606 aio_grp_dec (grp);
607 }
608
609 return !SvTRUE (ERRSV); 659 return !!SvTRUE (ERRSV);
610} 660}
611 661
662static void
612static void req_destroy (aio_req req) 663req_destroy (aio_req req)
613{ 664{
614 if (req->self) 665 if (req->self)
615 { 666 {
616 sv_unmagic (req->self, PERL_MAGIC_ext); 667 sv_unmagic (req->self, PERL_MAGIC_ext);
617 SvREFCNT_dec (req->self); 668 SvREFCNT_dec (req->self);
618 } 669 }
619 670
620 SvREFCNT_dec (req->sv1); 671 SvREFCNT_dec (req->sv1);
621 SvREFCNT_dec (req->sv2); 672 SvREFCNT_dec (req->sv2);
673 SvREFCNT_dec (req->sv3);
674 SvREFCNT_dec (req->sv4);
622 SvREFCNT_dec (req->callback); 675 SvREFCNT_dec (req->callback);
623 676
624 if (req->flags & FLAG_PTR2_FREE)
625 free (req->ptr2);
626
627 Safefree (req); 677 free (req);
628} 678}
629 679
680static void
630static void req_cancel_subs (aio_req grp) 681req_cancel_subs (aio_req grp)
631{ 682{
632 aio_req sub;
633
634 if (grp->type != REQ_GROUP) 683 if (grp->type != EIO_GROUP)
635 return; 684 return;
636 685
637 SvREFCNT_dec (grp->sv2); 686 SvREFCNT_dec (grp->sv2);
638 grp->sv2 = 0; 687 grp->sv2 = 0;
639 688
640 for (sub = grp->grp_first; sub; sub = sub->grp_next) 689 eio_grp_cancel (grp);
641 req_cancel (sub);
642} 690}
643 691
644static void req_cancel (aio_req req) 692static void ecb_cold
693create_respipe (void)
645{ 694{
646 req->flags |= FLAG_CANCELLED; 695 if (s_epipe_renew (&respipe))
647 696 croak ("IO::AIO: unable to initialize result pipe");
648 req_cancel_subs (req);
649} 697}
650
651#ifdef USE_SOCKETS_AS_HANDLES
652# define TO_SOCKET(x) (win32_get_osfhandle (x))
653#else
654# define TO_SOCKET(x) (x)
655#endif
656 698
657static void 699static void
658create_respipe (void) 700poll_wait (void)
659{ 701{
660 int old_readfd = respipe [0];
661
662 if (respipe [1] >= 0)
663 respipe_close (TO_SOCKET (respipe [1]));
664
665#ifdef _WIN32
666 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667#else
668 if (pipe (respipe))
669#endif
670 croak ("unable to initialize result pipe");
671
672 if (old_readfd >= 0)
673 {
674 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675 croak ("unable to initialize result pipe(2)");
676
677 respipe_close (respipe [0]);
678 respipe [0] = old_readfd;
679 }
680
681#ifdef _WIN32
682 int arg = 1;
683 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685#else
686 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688#endif
689 croak ("unable to initialize result pipe(3)");
690
691 respipe_osf [0] = TO_SOCKET (respipe [0]);
692 respipe_osf [1] = TO_SOCKET (respipe [1]);
693}
694
695X_THREAD_PROC (aio_proc);
696
697static void start_thread (void)
698{
699 worker *wrk = calloc (1, sizeof (worker));
700
701 if (!wrk)
702 croak ("unable to allocate worker thread data");
703
704 X_LOCK (wrklock);
705
706 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707 {
708 wrk->prev = &wrk_first;
709 wrk->next = wrk_first.next;
710 wrk_first.next->prev = wrk;
711 wrk_first.next = wrk;
712 ++started;
713 }
714 else
715 free (wrk);
716
717 X_UNLOCK (wrklock);
718}
719
720static void maybe_start_thread (void)
721{
722 if (get_nthreads () >= wanted)
723 return;
724
725 /* todo: maybe use idle here, but might be less exact */
726 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727 return;
728
729 start_thread ();
730}
731
732static void req_send (aio_req req)
733{
734 block_sig ();
735
736 ++nreqs;
737
738 X_LOCK (reqlock);
739 ++nready;
740 reqq_push (&req_queue, req);
741 X_COND_SIGNAL (reqwait);
742 X_UNLOCK (reqlock);
743
744 unblock_sig ();
745
746 maybe_start_thread ();
747}
748
749static void end_thread (void)
750{
751 aio_req req;
752
753 Newz (0, req, 1, aio_cb);
754
755 req->type = REQ_QUIT;
756 req->pri = PRI_MAX + PRI_BIAS;
757
758 X_LOCK (reqlock);
759 reqq_push (&req_queue, req);
760 X_COND_SIGNAL (reqwait);
761 X_UNLOCK (reqlock);
762
763 X_LOCK (wrklock);
764 --started;
765 X_UNLOCK (wrklock);
766}
767
768static void set_max_idle (int nthreads)
769{
770 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771 max_idle = nthreads <= 0 ? 1 : nthreads;
772 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773}
774
775static void min_parallel (int nthreads)
776{
777 if (wanted < nthreads)
778 wanted = nthreads;
779}
780
781static void max_parallel (int nthreads)
782{
783 if (wanted > nthreads)
784 wanted = nthreads;
785
786 while (started > wanted)
787 end_thread ();
788}
789
790static void poll_wait (void)
791{
792 fd_set rfd;
793
794 while (nreqs) 702 while (eio_nreqs ())
795 { 703 {
796 int size; 704 int size;
797 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 705
706 X_LOCK (reslock);
798 size = res_queue.size; 707 size = res_queue.size;
799 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 708 X_UNLOCK (reslock);
800 709
801 if (size) 710 if (size)
802 return; 711 return;
803 712
804 maybe_start_thread (); 713 etp_maybe_start_thread ();
805 714
806 FD_ZERO (&rfd); 715 s_epipe_wait (&respipe);
807 FD_SET (respipe [0], &rfd);
808
809 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810 } 716 }
811} 717}
812 718
813static int poll_cb (void) 719static int
720poll_cb (void)
814{ 721{
815 dSP;
816 int count = 0;
817 int maxreqs = max_poll_reqs;
818 int do_croak = 0;
819 struct timeval tv_start, tv_now;
820 aio_req req;
821
822 if (max_poll_time)
823 gettimeofday (&tv_start, 0);
824
825 block_sig ();
826
827 for (;;) 722 for (;;)
828 { 723 {
829 for (;;) 724 int res = eio_poll ();
725
726 if (res > 0)
727 croak (0);
728
729 if (!max_outstanding || max_outstanding > eio_nreqs ())
730 return res;
731
732 poll_wait ();
733 }
734}
735
736static void ecb_cold
737reinit (void)
738{
739 create_respipe ();
740
741 if (eio_init (want_poll, done_poll) < 0)
742 croak ("IO::AIO: unable to initialise eio library");
743}
744
745/*****************************************************************************/
746
747#if !_POSIX_MAPPED_FILES
748# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
749# define munmap(addr,length) EIO_ENOSYS ()
750#endif
751
752#if !_POSIX_MEMORY_PROTECTION
753# define mprotect(addr,len,prot) EIO_ENOSYS ()
754# define PROT_NONE 0
755# define PROT_WRITE 0
756# define MAP_PRIVATE 0
757# define MAP_SHARED 0
758# define MAP_FIXED 0
759#endif
760
761#define MMAP_MAGIC PERL_MAGIC_ext
762
763static int ecb_cold
764mmap_free (pTHX_ SV *sv, MAGIC *mg)
765{
766 int old_errno = errno;
767 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
768 errno = old_errno;
769
770 mg->mg_obj = 0; /* just in case */
771
772 SvREADONLY_off (sv);
773
774 if (SvPVX (sv) != mg->mg_ptr)
775 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
776
777 SvCUR_set (sv, 0);
778 SvPVX (sv) = 0;
779 SvOK_off (sv);
780
781 return 0;
782}
783
784static MGVTBL mmap_vtbl = {
785 0, 0, 0, 0, mmap_free
786};
787
788/*****************************************************************************/
789
790static SV *
791get_cb (SV *cb_sv)
792{
793 SvGETMAGIC (cb_sv);
794 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
795}
796
797static aio_req ecb_noinline
798dreq (SV *callback)
799{
800 SV *cb_cv;
801 aio_req req;
802 int req_pri = next_pri;
803 next_pri = EIO_PRI_DEFAULT;
804
805 cb_cv = get_cb (callback);
806
807 req = calloc (sizeof (*req), 1);
808 if (!req)
809 croak ("out of memory during eio_req allocation");
810
811 req->callback = SvREFCNT_inc (cb_cv);
812 req->pri = req_pri;
813
814 return req;
815}
816
817#define dREQ \
818 aio_req req = dreq (callback); \
819
820#define REQ_SEND \
821 PUTBACK; \
822 req_submit (req); \
823 SPAGAIN; \
824 \
825 if (GIMME_V != G_VOID) \
826 XPUSHs (req_sv (req, aio_req_stash));
827
828ecb_inline void
829req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
830{
831 if (expect_false (SvROK (path)))
832 {
833 SV *rv = SvRV (path);
834 SV *wdob;
835
836 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
830 { 837 {
831 maybe_start_thread (); 838 path = AvARRAY (rv)[1];
839 wdob = AvARRAY (rv)[0];
832 840
833 X_LOCK (reslock); 841 if (SvOK (wdob))
834 req = reqq_shift (&res_queue);
835
836 if (req)
837 { 842 {
838 --npending; 843 *wd = SvAIO_WD (wdob);
839 844 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
840 if (!res_queue.size)
841 {
842 /* read any signals sent by the worker threads */
843 char buf [4];
844 while (respipe_read (respipe [0], buf, 4) == 4)
845 ;
846 }
847 }
848
849 X_UNLOCK (reslock);
850
851 if (!req)
852 break;
853
854 --nreqs;
855
856 if (req->type == REQ_GROUP && req->size)
857 {
858 req->int1 = 1; /* mark request as delayed */
859 continue;
860 } 845 }
861 else 846 else
862 { 847 *wd = EIO_INVALID_WD;
863 if (!req_invoke (req))
864 {
865 req_destroy (req);
866 unblock_sig ();
867 croak (0);
868 }
869
870 count++;
871 }
872
873 req_destroy (req);
874
875 if (maxreqs && !--maxreqs)
876 break;
877
878 if (max_poll_time)
879 {
880 gettimeofday (&tv_now, 0);
881
882 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883 break;
884 }
885 } 848 }
849 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
850 {
851 *wd = (aio_wd)(long)SvIVX (rv);
852 *wdsv = SvREFCNT_inc_NN (rv);
853 *ptr = ".";
854 return; /* path set to "." */
855 }
856 else
857 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
858 }
886 859
887 if (nreqs <= max_outstanding) 860 *pathsv = newSVsv (path);
861 *ptr = SvPVbyte_nolen (*pathsv);
862}
863
864static void ecb_noinline
865req_set_path1 (aio_req req, SV *path)
866{
867 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
868}
869
870static void ecb_noinline
871req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
872{
873 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
874
875 switch (SvTYPE (rv))
876 {
877 case SVt_PVIO:
878 case SVt_PVLV:
879 case SVt_PVGV:
880 req->type = type_fh;
881 req->sv1 = newSVsv (fh_or_path);
882 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
888 break; 883 break;
889 884
890 poll_wait (); 885 default:
891 886 req->type = type_path;
892 ++maxreqs; 887 req_set_path1 (req, fh_or_path);
888 break;
893 } 889 }
894
895 unblock_sig ();
896 return count;
897} 890}
898 891
899/*****************************************************************************/ 892XS(boot_IO__AIO) ecb_cold;
900/* work around various missing functions */
901 893
902#if !HAVE_PREADWRITE
903# define pread aio_pread
904# define pwrite aio_pwrite
905
906/*
907 * make our pread/pwrite safe against themselves, but not against
908 * normal read/write by using a mutex. slows down execution a lot,
909 * but that's your problem, not mine.
910 */
911static mutex_t preadwritelock = X_MUTEX_INIT;
912
913static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914{
915 ssize_t res;
916 off_t ooffset;
917
918 X_LOCK (preadwritelock);
919 ooffset = lseek (fd, 0, SEEK_CUR);
920 lseek (fd, offset, SEEK_SET);
921 res = read (fd, buf, count);
922 lseek (fd, ooffset, SEEK_SET);
923 X_UNLOCK (preadwritelock);
924
925 return res;
926}
927
928static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929{
930 ssize_t res;
931 off_t ooffset;
932
933 X_LOCK (preadwritelock);
934 ooffset = lseek (fd, 0, SEEK_CUR);
935 lseek (fd, offset, SEEK_SET);
936 res = write (fd, buf, count);
937 lseek (fd, offset, SEEK_SET);
938 X_UNLOCK (preadwritelock);
939
940 return res;
941}
942#endif
943
944#ifndef HAVE_FUTIMES
945
946# define utimes(path,times) aio_utimes (path, times)
947# define futimes(fd,times) aio_futimes (fd, times)
948
949int aio_utimes (const char *filename, const struct timeval times[2])
950{
951 if (times)
952 {
953 struct utimbuf buf;
954
955 buf.actime = times[0].tv_sec;
956 buf.modtime = times[1].tv_sec;
957
958 return utime (filename, &buf);
959 }
960 else
961 return utime (filename, 0);
962}
963
964int aio_futimes (int fd, const struct timeval tv[2])
965{
966 errno = ENOSYS;
967 return -1;
968}
969
970#endif
971
972#if !HAVE_FDATASYNC
973# define fdatasync fsync
974#endif
975
976#if !HAVE_READAHEAD
977# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980{
981 size_t todo = count;
982 dBUF;
983
984 while (todo > 0)
985 {
986 size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988 pread (fd, aio_buf, len, offset);
989 offset += len;
990 todo -= len;
991 }
992
993 errno = 0;
994 return count;
995}
996
997#endif
998
999#if !HAVE_READDIR_R
1000# define readdir_r aio_readdir_r
1001
1002static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005{
1006 X_DIRENT *e;
1007 int errorno;
1008
1009 X_LOCK (readdirlock);
1010
1011 e = readdir (dirp);
1012 errorno = errno;
1013
1014 if (e)
1015 {
1016 *res = ent;
1017 strcpy (ent->d_name, e->d_name);
1018 }
1019 else
1020 *res = 0;
1021
1022 X_UNLOCK (readdirlock);
1023
1024 errno = errorno;
1025 return e ? 0 : -1;
1026}
1027#endif
1028
1029/* sendfile always needs emulation */
1030static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031{
1032 ssize_t res;
1033
1034 if (!count)
1035 return 0;
1036
1037#if HAVE_SENDFILE
1038# if __linux
1039 res = sendfile (ofd, ifd, &offset, count);
1040
1041# elif __freebsd
1042 /*
1043 * Of course, the freebsd sendfile is a dire hack with no thoughts
1044 * wasted on making it similar to other I/O functions.
1045 */
1046 {
1047 off_t sbytes;
1048 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050 if (res < 0 && sbytes)
1051 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052 res = sbytes;
1053 }
1054
1055# elif __hpux
1056 res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058# elif __solaris
1059 {
1060 struct sendfilevec vec;
1061 size_t sbytes;
1062
1063 vec.sfv_fd = ifd;
1064 vec.sfv_flag = 0;
1065 vec.sfv_off = offset;
1066 vec.sfv_len = count;
1067
1068 res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070 if (res < 0 && sbytes)
1071 res = sbytes;
1072 }
1073
1074# endif
1075#else
1076 res = -1;
1077 errno = ENOSYS;
1078#endif
1079
1080 if (res < 0
1081 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082#if __solaris
1083 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084#endif
1085 )
1086 )
1087 {
1088 /* emulate sendfile. this is a major pain in the ass */
1089 dBUF;
1090
1091 res = 0;
1092
1093 while (count)
1094 {
1095 ssize_t cnt;
1096
1097 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099 if (cnt <= 0)
1100 {
1101 if (cnt && !res) res = -1;
1102 break;
1103 }
1104
1105 cnt = write (ofd, aio_buf, cnt);
1106
1107 if (cnt <= 0)
1108 {
1109 if (cnt && !res) res = -1;
1110 break;
1111 }
1112
1113 offset += cnt;
1114 res += cnt;
1115 count -= cnt;
1116 }
1117 }
1118
1119 return res;
1120}
1121
1122/* read a full directory */
1123static void scandir_ (aio_req req, worker *self)
1124{
1125 DIR *dirp;
1126 union
1127 {
1128 X_DIRENT d;
1129 char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130 } *u;
1131 X_DIRENT *entp;
1132 char *name, *names;
1133 int memlen = 4096;
1134 int memofs = 0;
1135 int res = 0;
1136
1137 X_LOCK (wrklock);
1138 self->dirp = dirp = opendir (req->ptr1);
1139 self->dbuf = u = malloc (sizeof (*u));
1140 req->flags |= FLAG_PTR2_FREE;
1141 req->ptr2 = names = malloc (memlen);
1142 X_UNLOCK (wrklock);
1143
1144 if (dirp && u && names)
1145 for (;;)
1146 {
1147 errno = 0;
1148 readdir_r (dirp, &u->d, &entp);
1149
1150 if (!entp)
1151 break;
1152
1153 name = entp->d_name;
1154
1155 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156 {
1157 int len = strlen (name) + 1;
1158
1159 res++;
1160
1161 while (memofs + len > memlen)
1162 {
1163 memlen *= 2;
1164 X_LOCK (wrklock);
1165 req->ptr2 = names = realloc (names, memlen);
1166 X_UNLOCK (wrklock);
1167
1168 if (!names)
1169 break;
1170 }
1171
1172 memcpy (names + memofs, name, len);
1173 memofs += len;
1174 }
1175 }
1176
1177 if (errno)
1178 res = -1;
1179
1180 req->result = res;
1181}
1182
1183/*****************************************************************************/
1184
1185X_THREAD_PROC (aio_proc)
1186{
1187 aio_req req;
1188 struct timespec ts;
1189 worker *self = (worker *)thr_arg;
1190
1191 /* try to distribute timeouts somewhat randomly */
1192 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1193
1194 for (;;)
1195 {
1196 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1197
1198 X_LOCK (reqlock);
1199
1200 for (;;)
1201 {
1202 self->req = req = reqq_shift (&req_queue);
1203
1204 if (req)
1205 break;
1206
1207 ++idle;
1208
1209 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1210 == ETIMEDOUT)
1211 {
1212 if (idle > max_idle)
1213 {
1214 --idle;
1215 X_UNLOCK (reqlock);
1216 X_LOCK (wrklock);
1217 --started;
1218 X_UNLOCK (wrklock);
1219 goto quit;
1220 }
1221
1222 /* we are allowed to idle, so do so without any timeout */
1223 X_COND_WAIT (reqwait, reqlock);
1224 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1225 }
1226
1227 --idle;
1228 }
1229
1230 --nready;
1231
1232 X_UNLOCK (reqlock);
1233
1234 errno = 0; /* strictly unnecessary */
1235
1236 if (!(req->flags & FLAG_CANCELLED))
1237 switch (req->type)
1238 {
1239 case REQ_READ: req->result = req->offs >= 0
1240 ? pread (req->int1, req->ptr1, req->size, req->offs)
1241 : read (req->int1, req->ptr1, req->size); break;
1242 case REQ_WRITE: req->result = req->offs >= 0
1243 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1244 : write (req->int1, req->ptr1, req->size); break;
1245
1246 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1247 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1248
1249 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1250 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1251 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1252
1253 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1254 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1255 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1256 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1257 case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1258 case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1259
1260 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1261 case REQ_CLOSE: req->result = close (req->int1); break;
1262 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1263 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1264 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1265 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1266 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1267 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1268 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1269 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1270
1271 case REQ_SYNC: req->result = 0; sync (); break;
1272 case REQ_FSYNC: req->result = fsync (req->int1); break;
1273 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1274
1275 case REQ_READDIR: scandir_ (req, self); break;
1276
1277 case REQ_BUSY:
1278#ifdef _WIN32
1279 Sleep (req->nv1 * 1000.);
1280#else
1281 {
1282 struct timeval tv;
1283
1284 tv.tv_sec = req->nv1;
1285 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1286
1287 req->result = select (0, 0, 0, 0, &tv);
1288 }
1289#endif
1290 break;
1291
1292 case REQ_UTIME:
1293 case REQ_FUTIME:
1294 {
1295 struct timeval tv[2];
1296 struct timeval *times;
1297
1298 if (req->nv1 != -1. || req->nv2 != -1.)
1299 {
1300 tv[0].tv_sec = req->nv1;
1301 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1302 tv[1].tv_sec = req->nv2;
1303 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1304
1305 times = tv;
1306 }
1307 else
1308 times = 0;
1309
1310
1311 req->result = req->type == REQ_FUTIME
1312 ? futimes (req->int1, times)
1313 : utimes (req->ptr1, times);
1314 }
1315
1316 case REQ_GROUP:
1317 case REQ_NOP:
1318 break;
1319
1320 case REQ_QUIT:
1321 goto quit;
1322
1323 default:
1324 req->result = -1;
1325 break;
1326 }
1327
1328 req->errorno = errno;
1329
1330 X_LOCK (reslock);
1331
1332 ++npending;
1333
1334 if (!reqq_push (&res_queue, req))
1335 {
1336 /* write a dummy byte to the pipe so fh becomes ready */
1337 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1338
1339 /* optionally signal the main thread asynchronously */
1340 if (main_sig)
1341 pthread_kill (main_tid, main_sig);
1342 }
1343
1344 self->req = 0;
1345 worker_clear (self);
1346
1347 X_UNLOCK (reslock);
1348 }
1349
1350quit:
1351 X_LOCK (wrklock);
1352 worker_free (self);
1353 X_UNLOCK (wrklock);
1354
1355 return 0;
1356}
1357
1358/*****************************************************************************/
1359
1360static void atfork_prepare (void)
1361{
1362 X_LOCK (wrklock);
1363 X_LOCK (reqlock);
1364 X_LOCK (reslock);
1365#if !HAVE_PREADWRITE
1366 X_LOCK (preadwritelock);
1367#endif
1368#if !HAVE_READDIR_R
1369 X_LOCK (readdirlock);
1370#endif
1371}
1372
1373static void atfork_parent (void)
1374{
1375#if !HAVE_READDIR_R
1376 X_UNLOCK (readdirlock);
1377#endif
1378#if !HAVE_PREADWRITE
1379 X_UNLOCK (preadwritelock);
1380#endif
1381 X_UNLOCK (reslock);
1382 X_UNLOCK (reqlock);
1383 X_UNLOCK (wrklock);
1384}
1385
1386static void atfork_child (void)
1387{
1388 aio_req prv;
1389
1390 while (prv = reqq_shift (&req_queue))
1391 req_destroy (prv);
1392
1393 while (prv = reqq_shift (&res_queue))
1394 req_destroy (prv);
1395
1396 while (wrk_first.next != &wrk_first)
1397 {
1398 worker *wrk = wrk_first.next;
1399
1400 if (wrk->req)
1401 req_destroy (wrk->req);
1402
1403 worker_clear (wrk);
1404 worker_free (wrk);
1405 }
1406
1407 started = 0;
1408 idle = 0;
1409 nreqs = 0;
1410 nready = 0;
1411 npending = 0;
1412
1413 create_respipe ();
1414
1415 atfork_parent ();
1416}
1417
1418#define dREQ \
1419 aio_req req; \
1420 int req_pri = next_pri; \
1421 next_pri = DEFAULT_PRI + PRI_BIAS; \
1422 \
1423 if (SvOK (callback) && !SvROK (callback)) \
1424 croak ("callback must be undef or of reference type"); \
1425 \
1426 Newz (0, req, 1, aio_cb); \
1427 if (!req) \
1428 croak ("out of memory during aio_req allocation"); \
1429 \
1430 req->callback = newSVsv (callback); \
1431 req->pri = req_pri
1432
1433#define REQ_SEND \
1434 req_send (req); \
1435 \
1436 if (GIMME_V != G_VOID) \
1437 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1438
1439MODULE = IO::AIO PACKAGE = IO::AIO 894MODULE = IO::AIO PACKAGE = IO::AIO
1440 895
1441PROTOTYPES: ENABLE 896PROTOTYPES: ENABLE
1442 897
1443BOOT: 898BOOT:
1444{ 899{
900 static const struct {
901 const char *name;
902 IV iv;
903 } *civ, const_iv[] = {
904# define const_niv(name, value) { # name, (IV) value },
905# define const_iv(name) { # name, (IV) name },
906# define const_eio(name) { # name, (IV) EIO_ ## name },
907
908 /* you have to re-run ./gendef0 after adding/Removing any constants here */
909
910 const_iv (ENOSYS)
911 const_iv (EXDEV)
912 const_iv (EBADR)
913
914 const_iv (O_RDONLY)
915 const_iv (O_WRONLY)
916 const_iv (O_RDWR)
917 const_iv (O_CREAT)
918 const_iv (O_TRUNC)
919 const_iv (O_EXCL)
920 const_iv (O_APPEND)
921
922 const_iv (O_ASYNC)
923 const_iv (O_DIRECT)
924 const_iv (O_NOATIME)
925
926 const_iv (O_CLOEXEC)
927 const_iv (O_NOCTTY)
928 const_iv (O_NOFOLLOW)
929 const_iv (O_NONBLOCK)
930 const_iv (O_EXEC)
931 const_iv (O_SEARCH)
932 const_iv (O_DIRECTORY)
933 const_iv (O_DSYNC)
934 const_iv (O_RSYNC)
935 const_iv (O_SYNC)
936 const_iv (O_TTY_INIT)
937
938 const_iv (S_IFIFO)
939 const_iv (S_IFCHR)
940 const_iv (S_IFBLK)
941 const_iv (S_IFLNK)
942 const_iv (S_IFREG)
943 const_iv (S_IFDIR)
944 const_iv (S_IFWHT)
945 const_iv (S_IFSOCK)
946 const_iv (S_IFMT)
947
948 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
949 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
950 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
951 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
952 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
953 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
954
955 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
956 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
957 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
958 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
959 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
960
961 const_iv (ST_RDONLY)
962 const_iv (ST_NOSUID)
963 const_iv (ST_NODEV)
964 const_iv (ST_NOEXEC)
965 const_iv (ST_SYNCHRONOUS)
966 const_iv (ST_MANDLOCK)
967 const_iv (ST_WRITE)
968 const_iv (ST_APPEND)
969 const_iv (ST_IMMUTABLE)
970 const_iv (ST_NOATIME)
971 const_iv (ST_NODIRATIME)
972 const_iv (ST_RELATIME)
973
974 const_iv (PROT_NONE)
975 const_iv (PROT_EXEC)
976 const_iv (PROT_READ)
977 const_iv (PROT_WRITE)
978
979 /*const_iv (MAP_FIXED)*/
980 const_iv (MAP_PRIVATE)
981 const_iv (MAP_SHARED)
982 const_iv (MAP_ANONYMOUS)
983
984 /* linuxish */
985 const_iv (MAP_HUGETLB)
986 const_iv (MAP_LOCKED)
987 const_iv (MAP_NORESERVE)
988 const_iv (MAP_POPULATE)
989 const_iv (MAP_NONBLOCK)
990
991 const_iv (FIEMAP_FLAG_SYNC)
992 const_iv (FIEMAP_FLAG_XATTR)
993 const_iv (FIEMAP_FLAGS_COMPAT)
994 const_iv (FIEMAP_EXTENT_LAST)
995 const_iv (FIEMAP_EXTENT_UNKNOWN)
996 const_iv (FIEMAP_EXTENT_DELALLOC)
997 const_iv (FIEMAP_EXTENT_ENCODED)
998 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
999 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1000 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1001 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1002 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1003 const_iv (FIEMAP_EXTENT_MERGED)
1004 const_iv (FIEMAP_EXTENT_SHARED)
1005
1006 const_iv (SPLICE_F_MOVE)
1007 const_iv (SPLICE_F_NONBLOCK)
1008 const_iv (SPLICE_F_MORE)
1009 const_iv (SPLICE_F_GIFT)
1010
1011 const_iv (SEEK_DATA)
1012 const_iv (SEEK_HOLE)
1013
1014 /* libeio constants */
1015 const_eio (SEEK_SET)
1016 const_eio (SEEK_CUR)
1017 const_eio (SEEK_END)
1018
1019 const_eio (MCL_FUTURE)
1020 const_eio (MCL_CURRENT)
1021
1022 const_eio (MS_ASYNC)
1023 const_eio (MS_INVALIDATE)
1024 const_eio (MS_SYNC)
1025
1026 const_eio (MT_MODIFY)
1027
1028 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1029 const_eio (SYNC_FILE_RANGE_WRITE)
1030 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1031
1032 const_eio (FALLOC_FL_KEEP_SIZE)
1033 const_eio (FALLOC_FL_PUNCH_HOLE)
1034
1035 const_eio (READDIR_DENTS)
1036 const_eio (READDIR_DIRS_FIRST)
1037 const_eio (READDIR_STAT_ORDER)
1038 const_eio (READDIR_FOUND_UNKNOWN)
1039
1040 const_eio (DT_UNKNOWN)
1041 const_eio (DT_FIFO)
1042 const_eio (DT_CHR)
1043 const_eio (DT_DIR)
1044 const_eio (DT_BLK)
1045 const_eio (DT_REG)
1046 const_eio (DT_LNK)
1047 const_eio (DT_SOCK)
1048 const_eio (DT_WHT)
1049 };
1050
1445 stash = gv_stashpv ("IO::AIO", 1); 1051 aio_stash = gv_stashpv ("IO::AIO" , 1);
1052 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1053 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1054 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1446 1055
1447 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1056 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1448 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1057 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1449 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1450 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1451 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1452#ifdef _WIN32
1453 X_MUTEX_CHECK (wrklock);
1454 X_MUTEX_CHECK (reslock);
1455 X_MUTEX_CHECK (reqlock);
1456 X_MUTEX_CHECK (reqwait);
1457 X_MUTEX_CHECK (preadwritelock);
1458 X_MUTEX_CHECK (readdirlock);
1459 1058
1460 X_COND_CHECK (reqwait); 1059 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1461#else
1462 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464#endif
1465 1060
1466 create_respipe (); 1061 reinit ();
1467
1468 X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1469} 1062}
1470 1063
1471void 1064void
1065reinit ()
1066 PROTOTYPE:
1067
1068void
1472max_poll_reqs (int nreqs) 1069max_poll_reqs (unsigned int nreqs)
1473 PROTOTYPE: $ 1070 PROTOTYPE: $
1474 CODE: 1071 CODE:
1475 max_poll_reqs = nreqs; 1072 eio_set_max_poll_reqs (nreqs);
1476 1073
1477void 1074void
1478max_poll_time (double nseconds) 1075max_poll_time (double nseconds)
1479 PROTOTYPE: $ 1076 PROTOTYPE: $
1480 CODE: 1077 CODE:
1481 max_poll_time = nseconds * AIO_TICKS; 1078 eio_set_max_poll_time (nseconds);
1482 1079
1483void 1080void
1484min_parallel (int nthreads) 1081min_parallel (unsigned int nthreads)
1485 PROTOTYPE: $
1486
1487void
1488max_parallel (int nthreads)
1489 PROTOTYPE: $
1490
1491void
1492max_idle (int nthreads)
1493 PROTOTYPE: $ 1082 PROTOTYPE: $
1494 CODE: 1083 CODE:
1495 set_max_idle (nthreads); 1084 eio_set_min_parallel (nthreads);
1496 1085
1497int 1086void
1498max_outstanding (int maxreqs) 1087max_parallel (unsigned int nthreads)
1499 PROTOTYPE: $ 1088 PROTOTYPE: $
1500 CODE: 1089 CODE:
1501 RETVAL = max_outstanding; 1090 eio_set_max_parallel (nthreads);
1091
1092void
1093max_idle (unsigned int nthreads)
1094 PROTOTYPE: $
1095 CODE:
1096 eio_set_max_idle (nthreads);
1097
1098void
1099idle_timeout (unsigned int seconds)
1100 PROTOTYPE: $
1101 CODE:
1102 eio_set_idle_timeout (seconds);
1103
1104void
1105max_outstanding (unsigned int maxreqs)
1106 PROTOTYPE: $
1107 CODE:
1502 max_outstanding = maxreqs; 1108 max_outstanding = maxreqs;
1503 OUTPUT: 1109
1504 RETVAL 1110void
1111aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1112 PPCODE:
1113{
1114 dREQ;
1115
1116 req->type = EIO_WD_OPEN;
1117 req_set_path1 (req, pathname);
1118
1119 REQ_SEND;
1120}
1505 1121
1506void 1122void
1507aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1123aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1508 PROTOTYPE: $$$;$
1509 PPCODE: 1124 PPCODE:
1510{ 1125{
1511 dREQ; 1126 dREQ;
1512 1127
1513 req->type = REQ_OPEN; 1128 req->type = EIO_OPEN;
1514 req->sv1 = newSVsv (pathname); 1129 req_set_path1 (req, pathname);
1515 req->ptr1 = SvPVbyte_nolen (req->sv1);
1516 req->int1 = flags; 1130 req->int1 = flags;
1517 req->mode = mode; 1131 req->int2 = mode;
1518 1132
1519 REQ_SEND; 1133 REQ_SEND;
1520} 1134}
1521 1135
1522void 1136void
1523aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 1137aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1524 PROTOTYPE: $;$
1525 ALIAS: 1138 ALIAS:
1526 aio_fsync = REQ_FSYNC 1139 aio_fsync = EIO_FSYNC
1527 aio_fdatasync = REQ_FDATASYNC 1140 aio_fdatasync = EIO_FDATASYNC
1141 aio_syncfs = EIO_SYNCFS
1528 PPCODE: 1142 PPCODE:
1529{ 1143{
1144 int fd = s_fileno_croak (fh, 0);
1530 dREQ; 1145 dREQ;
1531 1146
1532 req->type = ix; 1147 req->type = ix;
1533 req->sv1 = newSVsv (fh); 1148 req->sv1 = newSVsv (fh);
1534 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1149 req->int1 = fd;
1535 1150
1536 REQ_SEND (req); 1151 REQ_SEND;
1537} 1152}
1538 1153
1539int
1540_dup (int fd)
1541 PROTOTYPE: $
1542 CODE:
1543 RETVAL = dup (fd);
1544 OUTPUT:
1545 RETVAL
1546
1547void 1154void
1548_aio_close (int fd, SV *callback=&PL_sv_undef) 1155aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1549 PROTOTYPE: $;$
1550 PPCODE: 1156 PPCODE:
1551{ 1157{
1158 int fd = s_fileno_croak (fh, 0);
1552 dREQ; 1159 dREQ;
1553 1160
1554 req->type = REQ_CLOSE; 1161 req->type = EIO_SYNC_FILE_RANGE;
1162 req->sv1 = newSVsv (fh);
1555 req->int1 = fd; 1163 req->int1 = fd;
1164 req->offs = offset;
1165 req->size = nbytes;
1166 req->int2 = flags;
1556 1167
1557 REQ_SEND (req); 1168 REQ_SEND;
1169}
1170
1171void
1172aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1173 PPCODE:
1174{
1175 int fd = s_fileno_croak (fh, 0);
1176 dREQ;
1177
1178 req->type = EIO_FALLOCATE;
1179 req->sv1 = newSVsv (fh);
1180 req->int1 = fd;
1181 req->int2 = mode;
1182 req->offs = offset;
1183 req->size = len;
1184
1185 REQ_SEND;
1186}
1187
1188void
1189aio_close (SV *fh, SV *callback=&PL_sv_undef)
1190 PPCODE:
1191{
1192 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1193 int fd = s_fileno_croak (fh, 0);
1194 dREQ;
1195
1196 if (expect_false (close_fd < 0))
1197 {
1198 int pipefd [2];
1199
1200 if (
1201#ifdef _WIN32
1202 _pipe (pipefd, 1, _O_BINARY) < 0
1203#else
1204 pipe (pipefd) < 0
1205 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1206#endif
1207 || close (pipefd [1]) < 0
1208 )
1209 abort (); /*D*/
1210
1211 close_fd = pipefd [0];
1212 }
1213
1214 req->type = EIO_DUP2;
1215 req->int1 = close_fd;
1216 req->sv2 = newSVsv (fh);
1217 req->int2 = fd;
1218
1219 REQ_SEND;
1220}
1221
1222void
1223aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1224 PPCODE:
1225{
1226 int fd = s_fileno_croak (fh, 0);
1227 dREQ;
1228
1229 req->type = EIO_SEEK;
1230 req->sv1 = newSVsv (fh);
1231 req->int1 = fd;
1232 req->offs = SvVAL64 (offset);
1233 req->int2 = whence;
1234
1235 REQ_SEND;
1558} 1236}
1559 1237
1560void 1238void
1561aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1239aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1562 ALIAS: 1240 ALIAS:
1563 aio_read = REQ_READ 1241 aio_read = EIO_READ
1564 aio_write = REQ_WRITE 1242 aio_write = EIO_WRITE
1565 PROTOTYPE: $$$$$;$
1566 PPCODE: 1243 PPCODE:
1567{ 1244{
1568 STRLEN svlen; 1245 STRLEN svlen;
1246 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569 char *svptr = SvPVbyte (data, svlen); 1247 char *svptr = SvPVbyte (data, svlen);
1570 UV len = SvUV (length); 1248 UV len = SvUV (length);
1571 1249
1572 SvUPGRADE (data, SVt_PV);
1573 SvPOK_on (data);
1574
1575 if (dataoffset < 0) 1250 if (dataoffset < 0)
1576 dataoffset += svlen; 1251 dataoffset += svlen;
1577 1252
1578 if (dataoffset < 0 || dataoffset > svlen) 1253 if (dataoffset < 0 || dataoffset > svlen)
1579 croak ("dataoffset outside of data scalar"); 1254 croak ("dataoffset outside of data scalar");
1580 1255
1581 if (ix == REQ_WRITE) 1256 if (ix == EIO_WRITE)
1582 { 1257 {
1583 /* write: check length and adjust. */ 1258 /* write: check length and adjust. */
1584 if (!SvOK (length) || len + dataoffset > svlen) 1259 if (!SvOK (length) || len + dataoffset > svlen)
1585 len = svlen - dataoffset; 1260 len = svlen - dataoffset;
1586 } 1261 }
1587 else 1262 else
1588 { 1263 {
1589 /* read: grow scalar as necessary */ 1264 /* read: check type and grow scalar as necessary */
1265 SvUPGRADE (data, SVt_PV);
1266 if (SvLEN (data) >= SvCUR (data))
1590 svptr = SvGROW (data, len + dataoffset + 1); 1267 svptr = SvGROW (data, len + dataoffset + 1);
1268 else if (SvCUR (data) < len + dataoffset)
1269 croak ("length + dataoffset outside of scalar, and cannot grow");
1591 } 1270 }
1592
1593 if (len < 0)
1594 croak ("length must not be negative");
1595 1271
1596 { 1272 {
1597 dREQ; 1273 dREQ;
1598 1274
1599 req->type = ix; 1275 req->type = ix;
1600 req->sv1 = newSVsv (fh); 1276 req->sv1 = newSVsv (fh);
1601 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1277 req->int1 = fd;
1602 : IoOFP (sv_2io (fh)));
1603 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1278 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604 req->size = len; 1279 req->size = len;
1605 req->sv2 = SvREFCNT_inc (data); 1280 req->sv2 = SvREFCNT_inc (data);
1606 req->ptr1 = (char *)svptr + dataoffset; 1281 req->ptr2 = (char *)svptr + dataoffset;
1607 req->stroffset = dataoffset; 1282 req->stroffset = dataoffset;
1608 1283
1609 if (!SvREADONLY (data)) 1284 if (!SvREADONLY (data))
1610 { 1285 {
1611 SvREADONLY_on (data); 1286 SvREADONLY_on (data);
… …
1615 REQ_SEND; 1290 REQ_SEND;
1616 } 1291 }
1617} 1292}
1618 1293
1619void 1294void
1620aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1295aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1621 PROTOTYPE: $$;$ 1296 ALIAS:
1297 aio_readlink = EIO_READLINK
1298 aio_realpath = EIO_REALPATH
1622 PPCODE: 1299 PPCODE:
1623{ 1300{
1624 SV *data;
1625 dREQ; 1301 dREQ;
1626 1302
1627 data = newSV (NAME_MAX);
1628 SvPOK_on (data);
1629
1630 req->type = REQ_READLINK; 1303 req->type = ix;
1631 req->sv1 = newSVsv (path); 1304 req_set_path1 (req, pathname);
1632 req->ptr2 = SvPVbyte_nolen (req->sv1);
1633 req->sv2 = data;
1634 req->ptr1 = SvPVbyte_nolen (data);
1635 1305
1636 REQ_SEND; 1306 REQ_SEND;
1637} 1307}
1638 1308
1639void 1309void
1640aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) 1310aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1641 PROTOTYPE: $$$$;$
1642 PPCODE: 1311 PPCODE:
1643{ 1312{
1313 int ifd = s_fileno_croak (in_fh , 0);
1314 int ofd = s_fileno_croak (out_fh, 1);
1644 dREQ; 1315 dREQ;
1645 1316
1646 req->type = REQ_SENDFILE; 1317 req->type = EIO_SENDFILE;
1647 req->sv1 = newSVsv (out_fh); 1318 req->sv1 = newSVsv (out_fh);
1648 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1319 req->int1 = ofd;
1649 req->sv2 = newSVsv (in_fh); 1320 req->sv2 = newSVsv (in_fh);
1650 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1321 req->int2 = ifd;
1651 req->offs = SvVAL64 (in_offset); 1322 req->offs = in_offset;
1652 req->size = length; 1323 req->size = length;
1653 1324
1654 REQ_SEND; 1325 REQ_SEND;
1655} 1326}
1656 1327
1657void 1328void
1658aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) 1329aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1659 PROTOTYPE: $$$;$
1660 PPCODE: 1330 PPCODE:
1661{ 1331{
1332 int fd = s_fileno_croak (fh, 0);
1662 dREQ; 1333 dREQ;
1663 1334
1664 req->type = REQ_READAHEAD; 1335 req->type = EIO_READAHEAD;
1665 req->sv1 = newSVsv (fh); 1336 req->sv1 = newSVsv (fh);
1666 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1337 req->int1 = fd;
1667 req->offs = SvVAL64 (offset); 1338 req->offs = offset;
1668 req->size = length; 1339 req->size = length;
1669 1340
1670 REQ_SEND; 1341 REQ_SEND;
1671} 1342}
1672 1343
1673void 1344void
1674aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) 1345aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675 ALIAS: 1346 ALIAS:
1676 aio_stat = REQ_STAT 1347 aio_stat = EIO_STAT
1677 aio_lstat = REQ_LSTAT 1348 aio_lstat = EIO_LSTAT
1349 aio_statvfs = EIO_STATVFS
1678 PPCODE: 1350 PPCODE:
1679{ 1351{
1680 dREQ; 1352 dREQ;
1681 1353
1682 req->ptr2 = malloc (sizeof (Stat_t)); 1354 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1683 if (!req->ptr2)
1684 {
1685 req_destroy (req);
1686 croak ("out of memory during aio_stat statdata allocation");
1687 }
1688
1689 req->flags |= FLAG_PTR2_FREE;
1690 req->sv1 = newSVsv (fh_or_path);
1691
1692 if (SvPOK (fh_or_path))
1693 {
1694 req->type = ix;
1695 req->ptr1 = SvPVbyte_nolen (req->sv1);
1696 }
1697 else
1698 {
1699 req->type = REQ_FSTAT;
1700 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1701 }
1702 1355
1703 REQ_SEND; 1356 REQ_SEND;
1704} 1357}
1358
1359UV
1360major (UV dev)
1361 ALIAS:
1362 minor = 1
1363 CODE:
1364 RETVAL = ix ? major (dev) : minor (dev);
1365 OUTPUT:
1366 RETVAL
1367
1368UV
1369makedev (UV maj, UV min)
1370 CODE:
1371 RETVAL = makedev (maj, min);
1372 OUTPUT:
1373 RETVAL
1705 1374
1706void 1375void
1707aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1376aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1708 PPCODE: 1377 PPCODE:
1709{ 1378{
1710 dREQ; 1379 dREQ;
1711 1380
1712 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1381 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1382 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714 req->sv1 = newSVsv (fh_or_path); 1383 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1715
1716 if (SvPOK (fh_or_path))
1717 {
1718 req->type = REQ_UTIME;
1719 req->ptr1 = SvPVbyte_nolen (req->sv1);
1720 }
1721 else
1722 {
1723 req->type = REQ_FUTIME;
1724 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725 }
1726 1384
1727 REQ_SEND; 1385 REQ_SEND;
1728} 1386}
1729 1387
1730void 1388void
1731aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) 1389aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1732 PPCODE: 1390 PPCODE:
1733{ 1391{
1734 dREQ; 1392 dREQ;
1735 1393
1736 req->sv1 = newSVsv (fh_or_path);
1737 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1394 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738 1395 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1739 if (SvPOK (fh_or_path))
1740 {
1741 req->type = REQ_TRUNCATE;
1742 req->ptr1 = SvPVbyte_nolen (req->sv1);
1743 }
1744 else
1745 {
1746 req->type = REQ_FTRUNCATE;
1747 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748 }
1749 1396
1750 REQ_SEND; 1397 REQ_SEND;
1751} 1398}
1752 1399
1753void 1400void
1754aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1401aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1755 PPCODE: 1402 PPCODE:
1756{ 1403{
1757 dREQ; 1404 dREQ;
1758 1405
1759 req->mode = mode; 1406 req->int2 = mode;
1760 req->sv1 = newSVsv (fh_or_path); 1407 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1761
1762 if (SvPOK (fh_or_path))
1763 {
1764 req->type = REQ_CHMOD;
1765 req->ptr1 = SvPVbyte_nolen (req->sv1);
1766 }
1767 else
1768 {
1769 req->type = REQ_FCHMOD;
1770 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771 }
1772 1408
1773 REQ_SEND; 1409 REQ_SEND;
1774} 1410}
1775 1411
1776void 1412void
… …
1779{ 1415{
1780 dREQ; 1416 dREQ;
1781 1417
1782 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1418 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1419 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784 req->sv1 = newSVsv (fh_or_path); 1420 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1785 1421
1786 if (SvPOK (fh_or_path)) 1422 REQ_SEND;
1787 { 1423}
1788 req->type = REQ_CHOWN; 1424
1789 req->ptr1 = SvPVbyte_nolen (req->sv1); 1425void
1790 } 1426aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1791 else 1427 PPCODE:
1792 { 1428{
1793 req->type = REQ_FCHOWN; 1429 dREQ;
1794 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1430
1795 } 1431 req->type = EIO_READDIR;
1432 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1433
1434 if (flags & EIO_READDIR_DENTS)
1435 req->int1 |= EIO_READDIR_CUSTOM2;
1436
1437 req_set_path1 (req, pathname);
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1444 PPCODE:
1445{
1446 dREQ;
1447
1448 req->type = EIO_MKDIR;
1449 req->int2 = mode;
1450 req_set_path1 (req, pathname);
1796 1451
1797 REQ_SEND; 1452 REQ_SEND;
1798} 1453}
1799 1454
1800void 1455void
1801aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1456aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1802 ALIAS: 1457 ALIAS:
1803 aio_unlink = REQ_UNLINK 1458 aio_unlink = EIO_UNLINK
1804 aio_rmdir = REQ_RMDIR 1459 aio_rmdir = EIO_RMDIR
1805 aio_readdir = REQ_READDIR 1460 aio_readdir = EIO_READDIR
1806 PPCODE: 1461 PPCODE:
1807{ 1462{
1808 dREQ; 1463 dREQ;
1809 1464
1810 req->type = ix; 1465 req->type = ix;
1811 req->sv1 = newSVsv (pathname); 1466 req_set_path1 (req, pathname);
1812 req->ptr1 = SvPVbyte_nolen (req->sv1);
1813
1814 REQ_SEND;
1815}
1816
1817void
1818aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1819 PPCODE:
1820{
1821 dREQ;
1822
1823 req->type = REQ_MKDIR;
1824 req->sv1 = newSVsv (pathname);
1825 req->ptr1 = SvPVbyte_nolen (req->sv1);
1826 req->mode = mode;
1827 1467
1828 REQ_SEND; 1468 REQ_SEND;
1829} 1469}
1830 1470
1831void 1471void
1832aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef) 1472aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833 ALIAS: 1473 ALIAS:
1834 aio_link = REQ_LINK 1474 aio_link = EIO_LINK
1835 aio_symlink = REQ_SYMLINK 1475 aio_symlink = EIO_SYMLINK
1836 aio_rename = REQ_RENAME 1476 aio_rename = EIO_RENAME
1837 PPCODE: 1477 PPCODE:
1838{ 1478{
1479 eio_wd wd2 = 0;
1839 dREQ; 1480 dREQ;
1840 1481
1841 req->type = ix; 1482 req->type = ix;
1842 req->sv2 = newSVsv (oldpath); 1483 req_set_path1 (req, oldpath);
1843 req->ptr2 = SvPVbyte_nolen (req->sv2); 1484 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1844 req->sv1 = newSVsv (newpath); 1485 req->int3 = (long)wd2;
1845 req->ptr1 = SvPVbyte_nolen (req->sv1);
1846 1486
1847 REQ_SEND; 1487 REQ_SEND;
1848} 1488}
1849 1489
1850void 1490void
1851aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1491aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1852 PPCODE: 1492 PPCODE:
1853{ 1493{
1854 dREQ; 1494 dREQ;
1855 1495
1856 req->type = REQ_MKNOD; 1496 req->type = EIO_MKNOD;
1857 req->sv1 = newSVsv (pathname);
1858 req->ptr1 = SvPVbyte_nolen (req->sv1);
1859 req->mode = (mode_t)mode; 1497 req->int2 = (mode_t)mode;
1860 req->offs = dev; 1498 req->offs = dev;
1499 req_set_path1 (req, pathname);
1861 1500
1862 REQ_SEND; 1501 REQ_SEND;
1863} 1502}
1864 1503
1865void 1504void
1505aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1506 ALIAS:
1507 aio_mtouch = EIO_MTOUCH
1508 aio_msync = EIO_MSYNC
1509 PPCODE:
1510{
1511 STRLEN svlen;
1512 char *svptr = SvPVbyte (data, svlen);
1513 UV len = SvUV (length);
1514
1515 if (offset < 0)
1516 offset += svlen;
1517
1518 if (offset < 0 || offset > svlen)
1519 croak ("offset outside of scalar");
1520
1521 if (!SvOK (length) || len + offset > svlen)
1522 len = svlen - offset;
1523
1524 {
1525 dREQ;
1526
1527 req->type = ix;
1528 req->sv2 = SvREFCNT_inc (data);
1529 req->ptr2 = (char *)svptr + offset;
1530 req->size = len;
1531 req->int1 = flags;
1532
1533 REQ_SEND;
1534 }
1535}
1536
1537void
1538aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1539 PPCODE:
1540{
1541 STRLEN svlen;
1542 char *svptr = SvPVbyte (data, svlen);
1543 UV len = SvUV (length);
1544
1545 if (offset < 0)
1546 offset += svlen;
1547
1548 if (offset < 0 || offset > svlen)
1549 croak ("offset outside of scalar");
1550
1551 if (!SvOK (length) || len + offset > svlen)
1552 len = svlen - offset;
1553
1554 {
1555 dREQ;
1556
1557 req->type = EIO_MLOCK;
1558 req->sv2 = SvREFCNT_inc (data);
1559 req->ptr2 = (char *)svptr + offset;
1560 req->size = len;
1561
1562 REQ_SEND;
1563 }
1564}
1565
1566void
1567aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1568 PPCODE:
1569{
1570 dREQ;
1571
1572 req->type = EIO_MLOCKALL;
1573 req->int1 = flags;
1574
1575 REQ_SEND;
1576}
1577
1578void
1579aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1580 PPCODE:
1581{
1582 int fd = s_fileno_croak (fh, 0);
1583 dREQ;
1584
1585 req->type = EIO_CUSTOM;
1586 req->sv1 = newSVsv (fh);
1587 req->int1 = fd;
1588
1589 req->feed = fiemap;
1590#if HAVE_FIEMAP
1591 /* keep our fingers crossed that the next two types are 64 bit */
1592 req->offs = start;
1593 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1594 req->int2 = flags;
1595 req->int3 = SvOK (count) ? SvIV (count) : -1;
1596#endif
1597
1598 REQ_SEND;
1599}
1600
1601void
1866aio_busy (double delay, SV *callback=&PL_sv_undef) 1602aio_busy (double delay, SV *callback=&PL_sv_undef)
1867 PPCODE: 1603 PPCODE:
1868{ 1604{
1869 dREQ; 1605 dREQ;
1870 1606
1871 req->type = REQ_BUSY; 1607 req->type = EIO_BUSY;
1872 req->nv1 = delay < 0. ? 0. : delay; 1608 req->nv1 = delay < 0. ? 0. : delay;
1873 1609
1874 REQ_SEND; 1610 REQ_SEND;
1875} 1611}
1876 1612
1877void 1613void
1878aio_group (SV *callback=&PL_sv_undef) 1614aio_group (SV *callback=&PL_sv_undef)
1879 PROTOTYPE: ;$
1880 PPCODE: 1615 PPCODE:
1881{ 1616{
1882 dREQ; 1617 dREQ;
1883 1618
1884 req->type = REQ_GROUP; 1619 req->type = EIO_GROUP;
1885 1620
1621 PUTBACK;
1886 req_send (req); 1622 req_submit (req);
1623 SPAGAIN;
1624
1887 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1625 XPUSHs (req_sv (req, aio_grp_stash));
1888} 1626}
1889 1627
1890void 1628void
1891aio_nop (SV *callback=&PL_sv_undef) 1629aio_nop (SV *callback=&PL_sv_undef)
1892 ALIAS: 1630 ALIAS:
1893 aio_nop = REQ_NOP 1631 aio_nop = EIO_NOP
1894 aio_sync = REQ_SYNC 1632 aio_sync = EIO_SYNC
1895 PPCODE: 1633 PPCODE:
1896{ 1634{
1897 dREQ; 1635 dREQ;
1898 1636
1899 req->type = ix; 1637 req->type = ix;
… …
1901 REQ_SEND; 1639 REQ_SEND;
1902} 1640}
1903 1641
1904int 1642int
1905aioreq_pri (int pri = 0) 1643aioreq_pri (int pri = 0)
1906 PROTOTYPE: ;$
1907 CODE: 1644 CODE:
1908 RETVAL = next_pri - PRI_BIAS; 1645 RETVAL = next_pri;
1909 if (items > 0) 1646 if (items > 0)
1910 { 1647 {
1911 if (pri < PRI_MIN) pri = PRI_MIN; 1648 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1912 if (pri > PRI_MAX) pri = PRI_MAX; 1649 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1913 next_pri = pri + PRI_BIAS; 1650 next_pri = pri;
1914 } 1651 }
1915 OUTPUT: 1652 OUTPUT:
1916 RETVAL 1653 RETVAL
1917 1654
1918void 1655void
1919aioreq_nice (int nice = 0) 1656aioreq_nice (int nice = 0)
1920 CODE: 1657 CODE:
1921 nice = next_pri - nice; 1658 nice = next_pri - nice;
1922 if (nice < PRI_MIN) nice = PRI_MIN; 1659 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1923 if (nice > PRI_MAX) nice = PRI_MAX; 1660 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1924 next_pri = nice + PRI_BIAS; 1661 next_pri = nice;
1925 1662
1926void 1663void
1927flush () 1664flush ()
1928 PROTOTYPE:
1929 CODE: 1665 CODE:
1930 while (nreqs) 1666 while (eio_nreqs ())
1931 { 1667 {
1932 poll_wait (); 1668 poll_wait ();
1933 poll_cb (); 1669 poll_cb ();
1934 } 1670 }
1935 1671
1936int 1672int
1937poll() 1673poll ()
1938 PROTOTYPE:
1939 CODE: 1674 CODE:
1940 poll_wait (); 1675 poll_wait ();
1941 RETVAL = poll_cb (); 1676 RETVAL = poll_cb ();
1942 OUTPUT: 1677 OUTPUT:
1943 RETVAL 1678 RETVAL
1944 1679
1945int 1680int
1946poll_fileno() 1681poll_fileno ()
1947 PROTOTYPE:
1948 CODE: 1682 CODE:
1949 RETVAL = respipe [0]; 1683 RETVAL = s_epipe_fd (&respipe);
1950 OUTPUT: 1684 OUTPUT:
1951 RETVAL 1685 RETVAL
1952 1686
1953int 1687int
1954poll_cb(...) 1688poll_cb (...)
1955 PROTOTYPE: 1689 PROTOTYPE:
1956 CODE: 1690 CODE:
1957 RETVAL = poll_cb (); 1691 RETVAL = poll_cb ();
1958 OUTPUT: 1692 OUTPUT:
1959 RETVAL 1693 RETVAL
1960 1694
1961void 1695void
1962poll_wait() 1696poll_wait ()
1963 PROTOTYPE:
1964 CODE: 1697 CODE:
1965 poll_wait (); 1698 poll_wait ();
1966 1699
1967void
1968setsig (int signum = SIGIO)
1969 PROTOTYPE: ;$
1970 CODE:
1971{
1972 if (block_sig_level)
1973 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1974
1975 X_LOCK (reslock);
1976 main_tid = pthread_self ();
1977 main_sig = signum;
1978 X_UNLOCK (reslock);
1979
1980 if (main_sig && npending)
1981 pthread_kill (main_tid, main_sig);
1982}
1983
1984void
1985aio_block (SV *cb)
1986 PROTOTYPE: &
1987 PPCODE:
1988{
1989 int count;
1990
1991 block_sig ();
1992 PUSHMARK (SP);
1993 PUTBACK;
1994 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1995 unblock_sig ();
1996
1997 if (SvTRUE (ERRSV))
1998 croak (0);
1999
2000 XSRETURN (count);
2001}
2002
2003int 1700int
2004nreqs() 1701nreqs ()
2005 PROTOTYPE:
2006 CODE: 1702 CODE:
2007 RETVAL = nreqs; 1703 RETVAL = eio_nreqs ();
2008 OUTPUT: 1704 OUTPUT:
2009 RETVAL 1705 RETVAL
2010 1706
2011int 1707int
2012nready() 1708nready ()
2013 PROTOTYPE:
2014 CODE: 1709 CODE:
2015 RETVAL = get_nready (); 1710 RETVAL = eio_nready ();
2016 OUTPUT: 1711 OUTPUT:
2017 RETVAL 1712 RETVAL
2018 1713
2019int 1714int
2020npending() 1715npending ()
2021 PROTOTYPE:
2022 CODE: 1716 CODE:
2023 RETVAL = get_npending (); 1717 RETVAL = eio_npending ();
2024 OUTPUT: 1718 OUTPUT:
2025 RETVAL 1719 RETVAL
2026 1720
2027int 1721int
2028nthreads() 1722nthreads ()
2029 PROTOTYPE:
2030 CODE: 1723 CODE:
2031 if (WORDACCESS_UNSAFE) X_LOCK (wrklock); 1724 RETVAL = eio_nthreads ();
2032 RETVAL = started;
2033 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2034 OUTPUT: 1725 OUTPUT:
2035 RETVAL 1726 RETVAL
2036 1727
1728int
1729fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1730 CODE:
1731 RETVAL = posix_fadvise (fh, offset, length, advice);
1732 OUTPUT:
1733 RETVAL
1734
1735IV
1736sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1737 CODE:
1738 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1739 OUTPUT:
1740 RETVAL
1741
1742void
1743mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1744 PPCODE:
1745 sv_unmagic (scalar, MMAP_MAGIC);
1746{
1747 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1748 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1749 if (addr == (void *)-1)
1750 XSRETURN_NO;
1751
1752 sv_force_normal (scalar);
1753
1754 /* we store the length in mg_obj, as namlen is I32 :/ */
1755 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1756 ->mg_obj = (SV *)length;
1757
1758 SvUPGRADE (scalar, SVt_PV); /* nop... */
1759
1760 if (!(prot & PROT_WRITE))
1761 SvREADONLY_on (scalar);
1762
1763 if (SvLEN (scalar))
1764 Safefree (SvPVX (scalar));
1765
1766 SvPVX (scalar) = (char *)addr;
1767 SvCUR_set (scalar, length);
1768 SvLEN_set (scalar, 0);
1769 SvPOK_only (scalar);
1770
1771 XSRETURN_YES;
1772}
1773
1774void
1775munmap (SV *scalar)
1776 CODE:
1777 sv_unmagic (scalar, MMAP_MAGIC);
1778
1779int
1780madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1781 ALIAS:
1782 mprotect = 1
1783 CODE:
1784{
1785 STRLEN svlen;
1786 void *addr = SvPVbyte (scalar, svlen);
1787 size_t len = SvUV (length);
1788
1789 if (offset < 0)
1790 offset += svlen;
1791
1792 if (offset < 0 || offset > svlen)
1793 croak ("offset outside of scalar");
1794
1795 if (!SvOK (length) || len + offset > svlen)
1796 len = svlen - offset;
1797
1798 addr = (void *)(((intptr_t)addr) + offset);
1799 eio_page_align (&addr, &len);
1800
1801 switch (ix)
1802 {
1803 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1804 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1805 }
1806}
1807 OUTPUT:
1808 RETVAL
1809
1810int
1811munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1812 CODE:
1813{
1814 STRLEN svlen;
1815 void *addr = SvPVbyte (scalar, svlen);
1816 size_t len = SvUV (length);
1817
1818 if (offset < 0)
1819 offset += svlen;
1820
1821 if (offset < 0 || offset > svlen)
1822 croak ("offset outside of scalar");
1823
1824 if (!SvOK (length) || len + offset > svlen)
1825 len = svlen - offset;
1826
1827 addr = (void *)(((intptr_t)addr) + offset);
1828 eio_page_align (&addr, &len);
1829#if _POSIX_MEMLOCK_RANGE
1830 RETVAL = munlock (addr, len);
1831#else
1832 RETVAL = EIO_ENOSYS ();
1833#endif
1834}
1835 OUTPUT:
1836 RETVAL
1837
1838int
1839munlockall ()
1840 CODE:
1841#if _POSIX_MEMLOCK
1842 munlockall ();
1843#else
1844 RETVAL = EIO_ENOSYS ();
1845#endif
1846 OUTPUT:
1847 RETVAL
1848
1849int
1850splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1851 CODE:
1852{
1853#if HAVE_LINUX_SPLICE
1854 loff_t off_in_, off_out_;
1855 RETVAL = splice (
1856 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1857 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1858 length, flags
1859 );
1860#else
1861 RETVAL = EIO_ENOSYS ();
1862#endif
1863}
1864 OUTPUT:
1865 RETVAL
1866
1867int
1868tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1869 CODE:
1870#if HAVE_LINUX_SPLICE
1871 RETVAL = tee (rfh, wfh, length, flags);
1872#else
1873 RETVAL = EIO_ENOSYS ();
1874#endif
1875 OUTPUT:
1876 RETVAL
1877
1878int
1879pipesize (aio_rfd rfh, int new_size = -1)
1880 PROTOTYPE: $;$
1881 CODE:
1882#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1883 if (new_size >= 0)
1884 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1885 else
1886 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1887#else
1888 errno = ENOSYS;
1889 RETVAL = -1;
1890#endif
1891 OUTPUT:
1892 RETVAL
1893
1894void _on_next_submit (SV *cb)
1895 CODE:
1896 SvREFCNT_dec (on_next_submit);
1897 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1898
2037PROTOTYPES: DISABLE 1899PROTOTYPES: DISABLE
1900
1901MODULE = IO::AIO PACKAGE = IO::AIO::WD
1902
1903BOOT:
1904{
1905 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1906 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1907}
1908
1909void
1910DESTROY (SV *self)
1911 CODE:
1912{
1913 aio_wd wd = SvAIO_WD (self);
1914#if HAVE_AT
1915 {
1916 SV *callback = &PL_sv_undef;
1917 dREQ; /* clobbers next_pri :/ */
1918 next_pri = req->pri; /* restore next_pri */
1919 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1920 req->type = EIO_WD_CLOSE;
1921 req->wd = wd;
1922 REQ_SEND;
1923 }
1924#else
1925 eio_wd_close_sync (wd);
1926#endif
1927}
2038 1928
2039MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1929MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2040 1930
2041void 1931void
2042cancel (aio_req_ornot req) 1932cancel (aio_req_ornot req)
2043 CODE: 1933 CODE:
2044 req_cancel (req); 1934 eio_cancel (req);
2045 1935
2046void 1936void
2047cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1937cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2048 CODE: 1938 PPCODE:
1939{
1940 if (GIMME_V != G_VOID)
1941 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1942
1943 if (items > 1)
1944 {
1945 SV *cb_cv =get_cb (callback);
1946
2049 SvREFCNT_dec (req->callback); 1947 SvREFCNT_dec (req->callback);
2050 req->callback = newSVsv (callback); 1948 req->callback = SvREFCNT_inc (cb_cv);
1949 }
1950}
2051 1951
2052MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1952MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2053 1953
2054void 1954void
2055add (aio_req grp, ...) 1955add (aio_req grp, ...)
2056 PPCODE: 1956 PPCODE:
2057{ 1957{
2058 int i; 1958 int i;
2059 aio_req req;
2060
2061 if (main_sig && !block_sig_level)
2062 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2063 1959
2064 if (grp->int1 == 2) 1960 if (grp->int1 == 2)
2065 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1961 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2066 1962
2067 for (i = 1; i < items; ++i ) 1963 for (i = 1; i < items; ++i )
2068 { 1964 {
1965 aio_req req;
1966
2069 if (GIMME_V != G_VOID) 1967 if (GIMME_V != G_VOID)
2070 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1968 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2071 1969
2072 req = SvAIO_REQ (ST (i)); 1970 req = SvAIO_REQ (ST (i));
2073 1971
2074 if (req) 1972 if (req)
2075 { 1973 eio_grp_add (grp, req);
2076 ++grp->size;
2077 req->grp = grp;
2078
2079 req->grp_prev = 0;
2080 req->grp_next = grp->grp_first;
2081
2082 if (grp->grp_first)
2083 grp->grp_first->grp_prev = req;
2084
2085 grp->grp_first = req;
2086 }
2087 } 1974 }
2088} 1975}
2089 1976
2090void 1977void
2091cancel_subs (aio_req_ornot req) 1978cancel_subs (aio_req_ornot req)
… …
2100 AV *av; 1987 AV *av;
2101 1988
2102 grp->errorno = errno; 1989 grp->errorno = errno;
2103 1990
2104 av = newAV (); 1991 av = newAV ();
1992 av_extend (av, items - 1);
2105 1993
2106 for (i = 1; i < items; ++i ) 1994 for (i = 1; i < items; ++i )
2107 av_push (av, newSVsv (ST (i))); 1995 av_push (av, newSVsv (ST (i)));
2108 1996
2109 SvREFCNT_dec (grp->sv1); 1997 SvREFCNT_dec (grp->sv1);
… …
2116 grp->errorno = errorno; 2004 grp->errorno = errorno;
2117 2005
2118void 2006void
2119limit (aio_req grp, int limit) 2007limit (aio_req grp, int limit)
2120 CODE: 2008 CODE:
2121 grp->int2 = limit; 2009 eio_grp_limit (grp, limit);
2122 aio_grp_feed (grp);
2123 2010
2124void 2011void
2125feed (aio_req grp, SV *callback=&PL_sv_undef) 2012feed (aio_req grp, SV *callback=&PL_sv_undef)
2126 CODE: 2013 CODE:
2127{ 2014{
2128 SvREFCNT_dec (grp->sv2); 2015 SvREFCNT_dec (grp->sv2);
2129 grp->sv2 = newSVsv (callback); 2016 grp->sv2 = newSVsv (callback);
2017 grp->feed = aio_grp_feed;
2130 2018
2131 if (grp->int2 <= 0) 2019 if (grp->int2 <= 0)
2132 grp->int2 = 2; 2020 grp->int2 = 2;
2133 2021
2134 aio_grp_feed (grp); 2022 eio_grp_limit (grp, grp->int2);
2135} 2023}
2136 2024

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