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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.233 by root, Thu Jun 25 13:34:28 2015 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/* 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. on't complain if this fails for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
18#ifdef _WIN32 46#ifdef _WIN32
19 47
20# define SIGIO 0 48 // perl overrides all those nice libc functions
21 typedef Direntry_t X_DIRENT; 49
22#undef malloc 50 #undef malloc
23#undef free 51 #undef free
24
25// perl overrides all those nice win32 functions
26# undef open 52 #undef open
27# undef read 53 #undef read
28# undef write 54 #undef write
29# undef send 55 #undef send
30# undef recv 56 #undef recv
31# undef stat 57 #undef stat
58 #undef lstat
32# undef fstat 59 #undef fstat
33# define lstat stat
34# undef truncate 60 #undef truncate
35# undef ftruncate 61 #undef ftruncate
36# undef open 62 #undef open
63 #undef link
37# undef close 64 #undef close
38# undef unlink 65 #undef unlink
66 #undef mkdir
39# undef rmdir 67 #undef rmdir
40# undef rename 68 #undef rename
41# undef lseek 69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
42 79
43# define chown(a,b,c) (errno = ENOSYS, -1) 80 #define EIO_STRUCT_STAT struct _stati64
44# define fchown(a,b,c) (errno = ENOSYS, -1) 81 #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 82
57#else 83#else
58 84
59# include "autoconf/config.h"
60# include <sys/time.h> 85 #include <sys/time.h>
61# include <sys/select.h> 86 #include <sys/select.h>
62# include <unistd.h> 87 #include <unistd.h>
63# include <utime.h> 88 #include <utime.h>
64# include <signal.h> 89 #include <signal.h>
65 typedef struct dirent X_DIRENT;
66 90
67#endif 91 #define EIO_STRUCT_STAT Stat_t
68 92
69#if HAVE_SENDFILE 93#endif
70# if __linux 94
71# include <sys/sendfile.h> 95/*****************************************************************************/
72# elif __freebsd 96
73# include <sys/socket.h> 97#if __GNUC__ >= 3
74# include <sys/uio.h> 98# define expect(expr,value) __builtin_expect ((expr),(value))
75# elif __hpux 99#else
76# include <sys/socket.h> 100# define expect(expr,value) (expr)
77# elif __solaris /* not yet */ 101#endif
78# include <sys/sendfile.h> 102
103#define expect_false(expr) expect ((expr) != 0, 0)
104#define expect_true(expr) expect ((expr) != 0, 1)
105
106/*****************************************************************************/
107
108typedef SV SV8; /* byte-sv, used for argument-checking */
109typedef int aio_rfd; /* read file desriptor */
110typedef int aio_wfd; /* write file descriptor */
111
112static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
113
114#define EIO_REQ_MEMBERS \
115 SV *callback; \
116 SV *sv1, *sv2; \
117 SV *sv3, *sv4; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/config.h"
124#include "libeio/eio.h"
125
126static int req_invoke (eio_req *req);
127#define EIO_FINISH(req) req_invoke (req)
128static void req_destroy (eio_req *grp);
129#define EIO_DESTROY(req) req_destroy (req)
130
131#include "libeio/eio.c"
132
133#if !HAVE_POSIX_FADVISE
134# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#if !HAVE_POSIX_MADVISE
138# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
139#endif
140
141#ifndef MAP_ANONYMOUS
142# ifdef MAP_ANON
143# define MAP_ANONYMOUS MAP_ANON
79# else 144# else
80# error sendfile support requested but not available 145# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81# endif 146# endif
82#endif 147#endif
83 148
84/* number of seconds after which idle threads exit */ 149/* defines all sorts of constants to 0 unless they are already defined */
85#define IDLE_TIMEOUT 10 150#include "def0.h"
86 151
87/* used for struct dirent, AIX doesn't provide it */ 152#ifndef makedev
88#ifndef NAME_MAX 153# define makedev(maj,min) (((maj) << 8) | (min))
89# define NAME_MAX 4096
90#endif 154#endif
91 155#ifndef major
92/* buffer size for various temporary buffers */ 156# 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 157#endif
158#ifndef minor
159# define minor(dev) ((dev) & 0xff)
160#endif
101 161
102#define dBUF \ 162#if PAGESIZE <= 0
103 char *aio_buf; \ 163# define PAGESIZE sysconf (_SC_PAGESIZE)
104 X_LOCK (wrklock); \ 164#endif
105 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
106 X_UNLOCK (wrklock); \
107 if (!aio_buf) \
108 return -1;
109 165
110typedef SV SV8; /* byte-sv, used for argument-checking */ 166/*****************************************************************************/
111 167
112enum { 168static void
113 REQ_QUIT, 169fiemap (eio_req *req)
114 REQ_OPEN, REQ_CLOSE,
115 REQ_READ, REQ_WRITE,
116 REQ_READAHEAD, REQ_SENDFILE,
117 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118 REQ_TRUNCATE, REQ_FTRUNCATE,
119 REQ_UTIME, REQ_FUTIME,
120 REQ_CHMOD, REQ_FCHMOD,
121 REQ_CHOWN, REQ_FCHOWN,
122 REQ_FSYNC, REQ_FDATASYNC,
123 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124 REQ_MKNOD, REQ_READDIR,
125 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126 REQ_GROUP, REQ_NOP,
127 REQ_BUSY,
128};
129
130#define AIO_REQ_KLASS "IO::AIO::REQ"
131#define AIO_GRP_KLASS "IO::AIO::GRP"
132
133typedef struct aio_cb
134{ 170{
135 struct aio_cb *volatile next; 171 req->result = -1;
136 172
137 SV *callback; 173#if HAVE_FIEMAP
138 SV *sv1, *sv2; 174 /* assume some c99 */
139 void *ptr1, *ptr2; 175 struct fiemap *fiemap = 0;
140 off_t offs; 176 size_t end_offset;
141 size_t size; 177 int count = req->int3;
142 ssize_t result;
143 double nv1, nv2;
144 178
145 STRLEN stroffset; 179 req->flags |= EIO_FLAG_PTR1_FREE;
146 int type;
147 int int1, int2, int3;
148 int errorno;
149 mode_t mode; /* open */
150 180
151 unsigned char flags; 181 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
152 unsigned char pri; 182 /* increase in 3.5kb steps */
183 if (count < 0)
184 count = 8;
153 185
154 SV *self; /* the perl counterpart of this request, if any */ 186 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
155 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 187 errno = ENOMEM;
156} aio_cb; 188 if (!fiemap)
157
158enum {
159 FLAG_CANCELLED = 0x01, /* request was cancelled */
160 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162};
163
164typedef aio_cb *aio_req;
165typedef aio_cb *aio_req_ornot;
166
167enum {
168 PRI_MIN = -4,
169 PRI_MAX = 4,
170
171 DEFAULT_PRI = 0,
172 PRI_BIAS = -PRI_MIN,
173 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174};
175
176#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178static unsigned int max_poll_time = 0;
179static unsigned int max_poll_reqs = 0;
180
181/* calculcate time difference in ~1/AIO_TICKS of a second */
182static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183{
184 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
186}
187
188static thread_t main_tid;
189static int main_sig;
190static int block_sig_level;
191
192void block_sig ()
193{
194 sigset_t ss;
195
196 if (block_sig_level++)
197 return; 189 return;
198 190
199 if (!main_sig) 191 req->ptr1 = fiemap;
192
193 fiemap->fm_start = req->offs;
194 fiemap->fm_length = req->size;
195 fiemap->fm_flags = req->int2;
196 fiemap->fm_extent_count = count;
197
198 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
200 return; 199 return;
201 200
202 sigemptyset (&ss); 201 if (req->int3 >= 0 /* not autosizing */
203 sigaddset (&ss, main_sig); 202 || !fiemap->fm_mapped_extents /* no more extents */
204 pthread_sigmask (SIG_BLOCK, &ss, 0); 203 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
205} 204 goto done;
206 205
207void unblock_sig () 206 /* else we have to loop -
208{ 207 * it would be tempting (actually I tried that first) to just query the
209 sigset_t ss; 208 * number of extents needed, but linux often feels like not returning all
209 * extents, without telling us it left any out. this complicates
210 * this quite a bit.
211 */
210 212
211 if (--block_sig_level) 213 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
212 return;
213 214
214 if (!main_sig) 215 for (;;)
215 return;
216
217 sigemptyset (&ss);
218 sigaddset (&ss, main_sig);
219 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220}
221
222static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224static unsigned int started, idle, wanted;
225
226/* worker threads management */
227static mutex_t wrklock = X_MUTEX_INIT;
228
229typedef struct worker {
230 /* locked by wrklock */
231 struct worker *prev, *next;
232
233 thread_t tid;
234
235 /* locked by reslock, reqlock or wrklock */
236 aio_req req; /* currently processed request */
237 void *dbuf;
238 DIR *dirp;
239} worker;
240
241static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243static void worker_clear (worker *wrk)
244{
245 if (wrk->dirp)
246 { 216 {
247 closedir (wrk->dirp); 217 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
248 wrk->dirp = 0; 218 char scratch[3072];
249 } 219 struct fiemap *incmap = (struct fiemap *)scratch;
250 220
251 if (wrk->dbuf) 221 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
252 { 222 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
253 free (wrk->dbuf); 223 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
254 wrk->dbuf = 0; 224 incmap->fm_flags = fiemap->fm_flags;
255 } 225 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
256}
257 226
258static void worker_free (worker *wrk) 227 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
259{
260 wrk->next->prev = wrk->prev;
261 wrk->prev->next = wrk->next;
262
263 free (wrk);
264}
265
266static volatile unsigned int nreqs, nready, npending;
267static volatile unsigned int max_idle = 4;
268static volatile unsigned int max_outstanding = 0xffffffff;
269static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271static mutex_t reslock = X_MUTEX_INIT;
272static mutex_t reqlock = X_MUTEX_INIT;
273static cond_t reqwait = X_COND_INIT;
274
275#if WORDACCESS_UNSAFE
276
277static unsigned int get_nready ()
278{
279 unsigned int retval;
280
281 X_LOCK (reqlock);
282 retval = nready;
283 X_UNLOCK (reqlock);
284
285 return retval;
286}
287
288static unsigned int get_npending ()
289{
290 unsigned int retval;
291
292 X_LOCK (reslock);
293 retval = npending;
294 X_UNLOCK (reslock);
295
296 return retval;
297}
298
299static unsigned int get_nthreads ()
300{
301 unsigned int retval;
302
303 X_LOCK (wrklock);
304 retval = started;
305 X_UNLOCK (wrklock);
306
307 return retval;
308}
309
310#else
311
312# define get_nready() nready
313# define get_npending() npending
314# define get_nthreads() started
315
316#endif
317
318/*
319 * a somewhat faster data structure might be nice, but
320 * with 8 priorities this actually needs <20 insns
321 * per shift, the most expensive operation.
322 */
323typedef struct {
324 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325 int size;
326} reqq;
327
328static reqq req_queue;
329static reqq res_queue;
330
331int reqq_push (reqq *q, aio_req req)
332{
333 int pri = req->pri;
334 req->next = 0;
335
336 if (q->qe[pri])
337 {
338 q->qe[pri]->next = req;
339 q->qe[pri] = req;
340 }
341 else
342 q->qe[pri] = q->qs[pri] = req;
343
344 return q->size++;
345}
346
347aio_req reqq_shift (reqq *q)
348{
349 int pri;
350
351 if (!q->size)
352 return 0; 228 return;
353 229
354 --q->size; 230 if (!incmap->fm_mapped_extents)
231 goto done;
355 232
356 for (pri = NUM_PRI; pri--; ) 233 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
357 { 234 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
358 aio_req req = q->qs[pri]; 235 errno = ENOMEM;
359
360 if (req) 236 if (!fiemap)
237 return;
238
239 req->ptr1 = fiemap;
240
241 for (count = 0; count < incmap->fm_mapped_extents; ++count)
361 { 242 {
362 if (!(q->qs[pri] = req->next)) 243 struct fiemap_extent *e = incmap->fm_extents + count;
363 q->qe[pri] = 0;
364 244
365 return req; 245 if (e->fe_logical + e->fe_length >= end_offset)
246 goto done;
247
248 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
249
250 if (e->fe_flags & FIEMAP_EXTENT_LAST)
251 goto done;
252
366 } 253 }
367 } 254 }
368 255
369 abort (); 256done:
370} 257 req->result = 0;
371 258
372static int poll_cb (); 259#else
373static int req_invoke (aio_req req); 260 errno = ENOSYS;
261#endif
262}
263
264/*****************************************************************************/
265
266enum {
267 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
268};
269
270typedef eio_req *aio_req;
271typedef eio_req *aio_req_ornot;
272typedef eio_wd aio_wd;
273
274static SV *on_next_submit;
275static int next_pri = EIO_PRI_DEFAULT;
276static int max_outstanding;
277
278static s_epipe respipe;
279
374static void req_destroy (aio_req req); 280static void req_destroy (aio_req req);
375static void req_cancel (aio_req req); 281static void req_cancel (aio_req req);
376 282
283static void
284want_poll (void)
285{
286 /* write a dummy byte to the pipe so fh becomes ready */
287 s_epipe_signal (&respipe);
288}
289
290static void
291done_poll (void)
292{
293 /* read any signals sent by the worker threads */
294 s_epipe_drain (&respipe);
295}
296
377/* must be called at most once */ 297/* must be called at most once */
378static SV *req_sv (aio_req req, const char *klass) 298static SV *
299req_sv (aio_req req, HV *stash)
379{ 300{
380 if (!req->self) 301 if (!req->self)
381 { 302 {
382 req->self = (SV *)newHV (); 303 req->self = (SV *)newHV ();
383 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384 } 305 }
385 306
386 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 307 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387} 308}
388 309
389static aio_req SvAIO_REQ (SV *sv) 310static SV *
311newSVaio_wd (aio_wd wd)
312{
313 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
314}
315
316static aio_req
317SvAIO_REQ (SV *sv)
390{ 318{
391 MAGIC *mg; 319 MAGIC *mg;
392 320
393 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 321 if (!SvROK (sv)
322 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
323 || (SvSTASH (SvRV (sv)) != aio_grp_stash
324 && SvSTASH (SvRV (sv)) != aio_req_stash
325 && !sv_derived_from (sv, "IO::AIO::REQ")))
394 croak ("object of class " AIO_REQ_KLASS " expected"); 326 croak ("object of class IO::AIO::REQ expected");
395 327
396 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 328 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397 329
398 return mg ? (aio_req)mg->mg_ptr : 0; 330 return mg ? (aio_req)mg->mg_ptr : 0;
399} 331}
400 332
333static aio_wd
334SvAIO_WD (SV *sv)
335{
336 if (!SvROK (sv)
337 || SvTYPE (SvRV (sv)) != SVt_PVMG
338 || SvSTASH (SvRV (sv)) != aio_wd_stash)
339 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
340
341 return (aio_wd)(long)SvIVX (SvRV (sv));
342}
343
344static SV *
345newmortalFH (int fd, int flags)
346{
347 if (fd < 0)
348 return &PL_sv_undef;
349
350 GV *gv = (GV *)sv_newmortal ();
351 char sym[64];
352 int symlen;
353
354 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
355 gv_init (gv, aio_stash, sym, symlen, 0);
356
357 symlen = snprintf (
358 sym,
359 sizeof (sym),
360 "%s&=%d",
361 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
362 fd
363 );
364
365 return do_open (gv, sym, symlen, 0, 0, 0, 0)
366 ? (SV *)gv : &PL_sv_undef;
367}
368
369static void
401static void aio_grp_feed (aio_req grp) 370aio_grp_feed (aio_req grp)
402{ 371{
403 block_sig (); 372 if (grp->sv2 && SvOK (grp->sv2))
404
405 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406 { 373 {
407 int old_len = grp->size;
408
409 if (grp->sv2 && SvOK (grp->sv2))
410 {
411 dSP; 374 dSP;
412 375
413 ENTER; 376 ENTER;
414 SAVETMPS; 377 SAVETMPS;
415 PUSHMARK (SP); 378 PUSHMARK (SP);
416 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 379 XPUSHs (req_sv (grp, aio_grp_stash));
417 PUTBACK; 380 PUTBACK;
418 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 381 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419 SPAGAIN; 382 SPAGAIN;
420 FREETMPS; 383 FREETMPS;
421 LEAVE; 384 LEAVE;
422 }
423
424 /* stop if no progress has been made */
425 if (old_len == grp->size)
426 {
427 SvREFCNT_dec (grp->sv2);
428 grp->sv2 = 0;
429 break;
430 }
431 } 385 }
432
433 unblock_sig ();
434} 386}
435 387
436static void aio_grp_dec (aio_req grp) 388static void
389req_submit (eio_req *req)
437{ 390{
438 --grp->size; 391 eio_submit (req);
439 392
440 /* call feeder, if applicable */ 393 if (expect_false (on_next_submit))
441 aio_grp_feed (grp);
442
443 /* finish, if done */
444 if (!grp->size && grp->int1)
445 { 394 {
446 block_sig (); 395 dSP;
396 SV *cb = sv_2mortal (on_next_submit);
447 397
448 if (!req_invoke (grp)) 398 on_next_submit = 0;
449 {
450 req_destroy (grp);
451 unblock_sig ();
452 croak (0);
453 }
454 399
455 req_destroy (grp); 400 PUSHMARK (SP);
456 unblock_sig (); 401 PUTBACK;
402 call_sv (cb, G_DISCARD | G_EVAL);
457 } 403 }
458} 404}
459 405
406static int
460static int req_invoke (aio_req req) 407req_invoke (eio_req *req)
461{ 408{
462 dSP;
463
464 if (req->flags & FLAG_SV2_RO_OFF) 409 if (req->flags & FLAG_SV2_RO_OFF)
465 SvREADONLY_off (req->sv2); 410 SvREADONLY_off (req->sv2);
466 411
467 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 412 if (!EIO_CANCELLED (req) && req->callback)
468 { 413 {
414 dSP;
415 static SV *sv_result_cache; /* caches the result integer SV */
416 SV *sv_result;
417
469 ENTER; 418 ENTER;
470 SAVETMPS; 419 SAVETMPS;
471 PUSHMARK (SP); 420 PUSHMARK (SP);
472 EXTEND (SP, 1); 421 EXTEND (SP, 1);
473 422
423 /* do not recreate the result IV from scratch each time */
424 if (expect_true (sv_result_cache))
425 {
426 sv_result = sv_result_cache; sv_result_cache = 0;
427 SvIV_set (sv_result, req->result);
428 SvIOK_only (sv_result);
429 }
430 else
431 {
432 sv_result = newSViv (req->result);
433 SvREADONLY_on (sv_result);
434 }
435
474 switch (req->type) 436 switch (req->type)
475 { 437 {
438 case EIO_WD_OPEN:
439 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
440 break;
441
476 case REQ_READDIR: 442 case EIO_READDIR:
477 { 443 {
478 SV *rv = &PL_sv_undef; 444 SV *rv = &PL_sv_undef;
479 445
480 if (req->result >= 0) 446 if (req->result >= 0)
481 { 447 {
482 int i; 448 int i;
483 char *buf = req->ptr2; 449 char *names = (char *)req->ptr2;
450 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484 AV *av = newAV (); 451 AV *av = newAV ();
485 452
486 av_extend (av, req->result - 1); 453 av_extend (av, req->result - 1);
487 454
488 for (i = 0; i < req->result; ++i) 455 for (i = 0; i < req->result; ++i)
489 { 456 {
490 SV *sv = newSVpv (buf, 0); 457 if (req->int1 & EIO_READDIR_DENTS)
458 {
459 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491 460
461 if (req->int1 & EIO_READDIR_CUSTOM2)
462 {
463 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
464 AV *avent = newAV ();
465
466 av_extend (avent, 2);
467
468 if (!sv_type [ent->type])
469 {
470 sv_type [ent->type] = newSViv (ent->type);
471 SvREADONLY_on (sv_type [ent->type]);
472 }
473
474 av_store (avent, 0, namesv);
475 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
476 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
477
478 av_store (av, i, newRV_noinc ((SV *)avent));
479 }
480 else
492 av_store (av, i, sv); 481 av_store (av, i, namesv);
482
483 ++ent;
484 }
485 else
486 {
487 SV *name = newSVpv (names, 0);
488 av_store (av, i, name);
493 buf += SvCUR (sv) + 1; 489 names += SvCUR (name) + 1;
490 }
494 } 491 }
495 492
496 rv = sv_2mortal (newRV_noinc ((SV *)av)); 493 rv = sv_2mortal (newRV_noinc ((SV *)av));
497 } 494 }
498 495
499 PUSHs (rv); 496 PUSHs (rv);
497
498 if (req->int1 & EIO_READDIR_CUSTOM1)
499 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500 } 500 }
501 break; 501 break;
502 502
503 case REQ_OPEN: 503 case EIO_OPEN:
504 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
505 break;
506
507 case EIO_STATVFS:
508 case EIO_FSTATVFS:
504 { 509 {
505 /* convert fd to fh */ 510 SV *rv = &PL_sv_undef;
506 SV *fh; 511
512#ifndef _WIN32
513 if (req->result >= 0)
514 {
515 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
516 HV *hv = newHV ();
517 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
518 * chooses to make it a struct.
519 */
520 unsigned long fsid = 0;
521 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
507 522
508 PUSHs (sv_2mortal (newSViv (req->result))); 523 rv = sv_2mortal (newRV_noinc ((SV *)hv));
509 PUTBACK;
510 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
511 SPAGAIN;
512 524
513 fh = POPs; 525 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
514 PUSHMARK (SP); 526 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
527 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
528 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
529 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
530 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
531 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
532 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
533 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
534 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
535 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
536 }
537#endif
538
515 XPUSHs (fh); 539 PUSHs (rv);
516 } 540 }
541
517 break; 542 break;
518 543
519 case REQ_GROUP: 544 case EIO_GROUP:
520 req->int1 = 2; /* mark group as finished */ 545 req->int1 = 2; /* mark group as finished */
521 546
522 if (req->sv1) 547 if (req->sv1)
523 { 548 {
524 int i; 549 int i;
… …
528 for (i = 0; i <= AvFILL (av); ++i) 553 for (i = 0; i <= AvFILL (av); ++i)
529 PUSHs (*av_fetch (av, i, 0)); 554 PUSHs (*av_fetch (av, i, 0));
530 } 555 }
531 break; 556 break;
532 557
533 case REQ_NOP: 558 case EIO_NOP:
534 case REQ_BUSY: 559 case EIO_BUSY:
535 break; 560 break;
536 561
537 case REQ_READLINK: 562 case EIO_READLINK:
563 case EIO_REALPATH:
538 if (req->result > 0) 564 if (req->result > 0)
565 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
566 break;
567
568 case EIO_STAT:
569 case EIO_LSTAT:
570 case EIO_FSTAT:
571 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
572
573 if (!(PL_laststatval = req->result))
574 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
575 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
576
577 PUSHs (sv_result);
578 break;
579
580 case EIO_SEEK:
581 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
582 break;
583
584 case EIO_READ:
585 {
586 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
587 *SvEND (req->sv2) = 0;
588 SvPOK_only (req->sv2);
589 SvSETMAGIC (req->sv2);
590 PUSHs (sv_result);
591 }
592 break;
593
594 case EIO_CUSTOM:
595 if (req->feed == fiemap)
539 { 596 {
540 SvCUR_set (req->sv2, req->result); 597#if HAVE_FIEMAP
541 *SvEND (req->sv2) = 0;
542 PUSHs (req->sv2); 598 if (!req->result)
599 {
600 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
601
602 if (fiemap->fm_extent_count)
603 {
604 AV *av = newAV ();
605 int i;
606
607 while (fiemap->fm_mapped_extents)
608 {
609 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
610 AV *ext_av = newAV ();
611
612 av_store (ext_av, 3, newSVuv (extent->fe_flags));
613 av_store (ext_av, 2, newSVval64 (extent->fe_length));
614 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
615 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
616
617 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
618 }
619
620 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
621 }
622 else
623 {
624 SvIV_set (sv_result, fiemap->fm_mapped_extents);
625 PUSHs (sv_result);
626 }
627 }
628#endif
543 } 629 }
630 else
631 PUSHs (sv_result);
544 break; 632 break;
545 633
546 case REQ_STAT: 634 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
547 case REQ_LSTAT: 635 if (req->result > 0)
548 case REQ_FSTAT: 636 SvIV_set (sv_result, 0);
549 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 637 /* FALLTHROUGH */
550 PL_laststatval = req->result;
551 PL_statcache = *(Stat_t *)(req->ptr2);
552 PUSHs (sv_2mortal (newSViv (req->result)));
553 break;
554
555 case REQ_READ:
556 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557 *SvEND (req->sv2) = 0;
558 PUSHs (sv_2mortal (newSViv (req->result)));
559 break;
560 638
561 default: 639 default:
562 PUSHs (sv_2mortal (newSViv (req->result))); 640 PUSHs (sv_result);
563 break; 641 break;
564 } 642 }
565 643
566 errno = req->errorno; 644 errno = req->errorno;
567 645
568 PUTBACK; 646 PUTBACK;
569 call_sv (req->callback, G_VOID | G_EVAL); 647 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570 SPAGAIN; 648 SPAGAIN;
649
650 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
651 SvREFCNT_dec (sv_result);
652 else
653 sv_result_cache = sv_result;
571 654
572 FREETMPS; 655 FREETMPS;
573 LEAVE; 656 LEAVE;
657
658 PUTBACK;
574 } 659 }
575 660
576 if (req->grp)
577 {
578 aio_req grp = req->grp;
579
580 /* unlink request */
581 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584 if (grp->grp_first == req)
585 grp->grp_first = req->grp_next;
586
587 aio_grp_dec (grp);
588 }
589
590 return !SvTRUE (ERRSV); 661 return !!SvTRUE (ERRSV);
591} 662}
592 663
664static void
593static void req_destroy (aio_req req) 665req_destroy (aio_req req)
594{ 666{
595 if (req->self) 667 if (req->self)
596 { 668 {
597 sv_unmagic (req->self, PERL_MAGIC_ext); 669 sv_unmagic (req->self, PERL_MAGIC_ext);
598 SvREFCNT_dec (req->self); 670 SvREFCNT_dec (req->self);
599 } 671 }
600 672
601 SvREFCNT_dec (req->sv1); 673 SvREFCNT_dec (req->sv1);
602 SvREFCNT_dec (req->sv2); 674 SvREFCNT_dec (req->sv2);
675 SvREFCNT_dec (req->sv3);
676 SvREFCNT_dec (req->sv4);
603 SvREFCNT_dec (req->callback); 677 SvREFCNT_dec (req->callback);
604 678
605 if (req->flags & FLAG_PTR2_FREE)
606 free (req->ptr2);
607
608 Safefree (req); 679 free (req);
609} 680}
610 681
682static void
611static void req_cancel_subs (aio_req grp) 683req_cancel_subs (aio_req grp)
612{ 684{
613 aio_req sub;
614
615 if (grp->type != REQ_GROUP) 685 if (grp->type != EIO_GROUP)
616 return; 686 return;
617 687
618 SvREFCNT_dec (grp->sv2); 688 SvREFCNT_dec (grp->sv2);
619 grp->sv2 = 0; 689 grp->sv2 = 0;
620 690
621 for (sub = grp->grp_first; sub; sub = sub->grp_next) 691 eio_grp_cancel (grp);
622 req_cancel (sub);
623} 692}
624 693
625static void req_cancel (aio_req req) 694static void ecb_cold
695create_respipe (void)
626{ 696{
627 req->flags |= FLAG_CANCELLED; 697 if (s_epipe_renew (&respipe))
628 698 croak ("IO::AIO: unable to initialize result pipe");
629 req_cancel_subs (req);
630} 699}
631
632#ifdef USE_SOCKETS_AS_HANDLES
633# define TO_SOCKET(x) (win32_get_osfhandle (x))
634#else
635# define TO_SOCKET(x) (x)
636#endif
637 700
638static void 701static void
639create_respipe () 702poll_wait (void)
640{ 703{
641 int old_readfd = respipe [0];
642
643 if (respipe [1] >= 0)
644 respipe_close (TO_SOCKET (respipe [1]));
645
646#ifdef _WIN32
647 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648#else
649 if (pipe (respipe))
650#endif
651 croak ("unable to initialize result pipe");
652
653 if (old_readfd >= 0)
654 {
655 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656 croak ("unable to initialize result pipe(2)");
657
658 respipe_close (respipe [0]);
659 respipe [0] = old_readfd;
660 }
661
662#ifdef _WIN32
663 int arg = 1;
664 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666#else
667 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669#endif
670 croak ("unable to initialize result pipe(3)");
671
672 respipe_osf [0] = TO_SOCKET (respipe [0]);
673 respipe_osf [1] = TO_SOCKET (respipe [1]);
674}
675
676X_THREAD_PROC (aio_proc);
677
678static void start_thread (void)
679{
680 worker *wrk = calloc (1, sizeof (worker));
681
682 if (!wrk)
683 croak ("unable to allocate worker thread data");
684
685 X_LOCK (wrklock);
686
687 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688 {
689 wrk->prev = &wrk_first;
690 wrk->next = wrk_first.next;
691 wrk_first.next->prev = wrk;
692 wrk_first.next = wrk;
693 ++started;
694 }
695 else
696 free (wrk);
697
698 X_UNLOCK (wrklock);
699}
700
701static void maybe_start_thread ()
702{
703 if (get_nthreads () >= wanted)
704 return;
705
706 /* todo: maybe use idle here, but might be less exact */
707 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708 return;
709
710 start_thread ();
711}
712
713static void req_send (aio_req req)
714{
715 block_sig ();
716
717 ++nreqs;
718
719 X_LOCK (reqlock);
720 ++nready;
721 reqq_push (&req_queue, req);
722 X_COND_SIGNAL (reqwait);
723 X_UNLOCK (reqlock);
724
725 unblock_sig ();
726
727 maybe_start_thread ();
728}
729
730static void end_thread (void)
731{
732 aio_req req;
733
734 Newz (0, req, 1, aio_cb);
735
736 req->type = REQ_QUIT;
737 req->pri = PRI_MAX + PRI_BIAS;
738
739 X_LOCK (reqlock);
740 reqq_push (&req_queue, req);
741 X_COND_SIGNAL (reqwait);
742 X_UNLOCK (reqlock);
743
744 X_LOCK (wrklock);
745 --started;
746 X_UNLOCK (wrklock);
747}
748
749static void set_max_idle (int nthreads)
750{
751 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752 max_idle = nthreads <= 0 ? 1 : nthreads;
753 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754}
755
756static void min_parallel (int nthreads)
757{
758 if (wanted < nthreads)
759 wanted = nthreads;
760}
761
762static void max_parallel (int nthreads)
763{
764 if (wanted > nthreads)
765 wanted = nthreads;
766
767 while (started > wanted)
768 end_thread ();
769}
770
771static void poll_wait ()
772{
773 fd_set rfd;
774
775 while (nreqs) 704 while (eio_nreqs ())
776 { 705 {
777 int size; 706 int size;
778 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 707
708 X_LOCK (reslock);
779 size = res_queue.size; 709 size = res_queue.size;
780 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 710 X_UNLOCK (reslock);
781 711
782 if (size) 712 if (size)
783 return; 713 return;
784 714
785 maybe_start_thread (); 715 etp_maybe_start_thread ();
786 716
787 FD_ZERO (&rfd); 717 s_epipe_wait (&respipe);
788 FD_SET (respipe [0], &rfd);
789
790 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791 } 718 }
792} 719}
793 720
794static int poll_cb () 721static int
722poll_cb (void)
795{ 723{
796 dSP;
797 int count = 0;
798 int maxreqs = max_poll_reqs;
799 int do_croak = 0;
800 struct timeval tv_start, tv_now;
801 aio_req req;
802
803 if (max_poll_time)
804 gettimeofday (&tv_start, 0);
805
806 block_sig ();
807
808 for (;;) 724 for (;;)
809 { 725 {
810 for (;;) 726 int res = eio_poll ();
727
728 if (res > 0)
729 croak (0);
730
731 if (!max_outstanding || max_outstanding > eio_nreqs ())
732 return res;
733
734 poll_wait ();
735 }
736}
737
738static void ecb_cold
739reinit (void)
740{
741 create_respipe ();
742
743 if (eio_init (want_poll, done_poll) < 0)
744 croak ("IO::AIO: unable to initialise eio library");
745}
746
747/*****************************************************************************/
748
749#if !_POSIX_MAPPED_FILES
750# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
751# define munmap(addr,length) EIO_ENOSYS ()
752#endif
753
754#if !_POSIX_MEMORY_PROTECTION
755# define mprotect(addr,len,prot) EIO_ENOSYS ()
756# define PROT_NONE 0
757# define PROT_WRITE 0
758# define MAP_PRIVATE 0
759# define MAP_SHARED 0
760# define MAP_FIXED 0
761#endif
762
763#define MMAP_MAGIC PERL_MAGIC_ext
764
765static int ecb_cold
766mmap_free (pTHX_ SV *sv, MAGIC *mg)
767{
768 int old_errno = errno;
769 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
770 errno = old_errno;
771
772 mg->mg_obj = 0; /* just in case */
773
774 SvREADONLY_off (sv);
775
776 if (SvPVX (sv) != mg->mg_ptr)
777 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
778
779 SvCUR_set (sv, 0);
780 SvPVX (sv) = 0;
781 SvOK_off (sv);
782
783 return 0;
784}
785
786static MGVTBL mmap_vtbl = {
787 0, 0, 0, 0, mmap_free
788};
789
790/*****************************************************************************/
791
792static SV *
793get_cb (SV *cb_sv)
794{
795 SvGETMAGIC (cb_sv);
796 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
797}
798
799static aio_req ecb_noinline
800dreq (SV *callback)
801{
802 SV *cb_cv;
803 aio_req req;
804 int req_pri = next_pri;
805 next_pri = EIO_PRI_DEFAULT;
806
807 cb_cv = get_cb (callback);
808
809 req = calloc (sizeof (*req), 1);
810 if (!req)
811 croak ("out of memory during eio_req allocation");
812
813 req->callback = SvREFCNT_inc (cb_cv);
814 req->pri = req_pri;
815
816 return req;
817}
818
819#define dREQ \
820 aio_req req = dreq (callback); \
821
822#define REQ_SEND \
823 PUTBACK; \
824 req_submit (req); \
825 SPAGAIN; \
826 \
827 if (GIMME_V != G_VOID) \
828 XPUSHs (req_sv (req, aio_req_stash));
829
830ecb_inline void
831req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
832{
833 if (expect_false (SvROK (path)))
834 {
835 SV *rv = SvRV (path);
836 SV *wdob;
837
838 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
811 { 839 {
812 maybe_start_thread (); 840 path = AvARRAY (rv)[1];
841 wdob = AvARRAY (rv)[0];
813 842
814 X_LOCK (reslock); 843 if (SvOK (wdob))
815 req = reqq_shift (&res_queue);
816
817 if (req)
818 { 844 {
819 --npending; 845 *wd = SvAIO_WD (wdob);
820 846 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
821 if (!res_queue.size)
822 {
823 /* read any signals sent by the worker threads */
824 char buf [4];
825 while (respipe_read (respipe [0], buf, 4) == 4)
826 ;
827 }
828 }
829
830 X_UNLOCK (reslock);
831
832 if (!req)
833 break;
834
835 --nreqs;
836
837 if (req->type == REQ_GROUP && req->size)
838 {
839 req->int1 = 1; /* mark request as delayed */
840 continue;
841 } 847 }
842 else 848 else
843 { 849 *wd = EIO_INVALID_WD;
844 if (!req_invoke (req))
845 {
846 req_destroy (req);
847 unblock_sig ();
848 croak (0);
849 }
850
851 count++;
852 }
853
854 req_destroy (req);
855
856 if (maxreqs && !--maxreqs)
857 break;
858
859 if (max_poll_time)
860 {
861 gettimeofday (&tv_now, 0);
862
863 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864 break;
865 }
866 } 850 }
851 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
852 {
853 *wd = (aio_wd)(long)SvIVX (rv);
854 *wdsv = SvREFCNT_inc_NN (rv);
855 *ptr = ".";
856 return; /* path set to "." */
857 }
858 else
859 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
860 }
867 861
868 if (nreqs <= max_outstanding) 862 *pathsv = newSVsv (path);
863 *ptr = SvPVbyte_nolen (*pathsv);
864}
865
866static void ecb_noinline
867req_set_path1 (aio_req req, SV *path)
868{
869 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
870}
871
872static void ecb_noinline
873req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
874{
875 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
876
877 switch (SvTYPE (rv))
878 {
879 case SVt_PVIO:
880 case SVt_PVLV:
881 case SVt_PVGV:
882 req->type = type_fh;
883 req->sv1 = newSVsv (fh_or_path);
884 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
869 break; 885 break;
870 886
871 poll_wait (); 887 default:
872 888 req->type = type_path;
873 ++maxreqs; 889 req_set_path1 (req, fh_or_path);
890 break;
874 } 891 }
875
876 unblock_sig ();
877 return count;
878} 892}
879 893
880/*****************************************************************************/ 894XS(boot_IO__AIO) ecb_cold;
881/* work around various missing functions */
882 895
883#if !HAVE_PREADWRITE
884# define pread aio_pread
885# define pwrite aio_pwrite
886
887/*
888 * make our pread/pwrite safe against themselves, but not against
889 * normal read/write by using a mutex. slows down execution a lot,
890 * but that's your problem, not mine.
891 */
892static mutex_t preadwritelock = X_MUTEX_INIT;
893
894static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895{
896 ssize_t res;
897 off_t ooffset;
898
899 X_LOCK (preadwritelock);
900 ooffset = lseek (fd, 0, SEEK_CUR);
901 lseek (fd, offset, SEEK_SET);
902 res = read (fd, buf, count);
903 lseek (fd, ooffset, SEEK_SET);
904 X_UNLOCK (preadwritelock);
905
906 return res;
907}
908
909static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
910{
911 ssize_t res;
912 off_t ooffset;
913
914 X_LOCK (preadwritelock);
915 ooffset = lseek (fd, 0, SEEK_CUR);
916 lseek (fd, offset, SEEK_SET);
917 res = write (fd, buf, count);
918 lseek (fd, offset, SEEK_SET);
919 X_UNLOCK (preadwritelock);
920
921 return res;
922}
923#endif
924
925#ifndef HAVE_FUTIMES
926
927# define utimes(path,times) aio_utimes (path, times)
928# define futimes(fd,times) aio_futimes (fd, times)
929
930int aio_utimes (const char *filename, const struct timeval times[2])
931{
932 if (times)
933 {
934 struct utimbuf buf;
935
936 buf.actime = times[0].tv_sec;
937 buf.modtime = times[1].tv_sec;
938
939 return utime (filename, &buf);
940 }
941 else
942 return utime (filename, 0);
943}
944
945int aio_futimes (int fd, const struct timeval tv[2])
946{
947 errno = ENOSYS;
948 return -1;
949}
950
951#endif
952
953#if !HAVE_FDATASYNC
954# define fdatasync fsync
955#endif
956
957#if !HAVE_READAHEAD
958# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961{
962 size_t todo = count;
963 dBUF;
964
965 while (todo > 0)
966 {
967 size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969 pread (fd, aio_buf, len, offset);
970 offset += len;
971 todo -= len;
972 }
973
974 errno = 0;
975 return count;
976}
977
978#endif
979
980#if !HAVE_READDIR_R
981# define readdir_r aio_readdir_r
982
983static mutex_t readdirlock = X_MUTEX_INIT;
984
985static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986{
987 X_DIRENT *e;
988 int errorno;
989
990 X_LOCK (readdirlock);
991
992 e = readdir (dirp);
993 errorno = errno;
994
995 if (e)
996 {
997 *res = ent;
998 strcpy (ent->d_name, e->d_name);
999 }
1000 else
1001 *res = 0;
1002
1003 X_UNLOCK (readdirlock);
1004
1005 errno = errorno;
1006 return e ? 0 : -1;
1007}
1008#endif
1009
1010/* sendfile always needs emulation */
1011static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012{
1013 ssize_t res;
1014
1015 if (!count)
1016 return 0;
1017
1018#if HAVE_SENDFILE
1019# if __linux
1020 res = sendfile (ofd, ifd, &offset, count);
1021
1022# elif __freebsd
1023 /*
1024 * Of course, the freebsd sendfile is a dire hack with no thoughts
1025 * wasted on making it similar to other I/O functions.
1026 */
1027 {
1028 off_t sbytes;
1029 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030
1031 if (res < 0 && sbytes)
1032 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033 res = sbytes;
1034 }
1035
1036# elif __hpux
1037 res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039# elif __solaris
1040 {
1041 struct sendfilevec vec;
1042 size_t sbytes;
1043
1044 vec.sfv_fd = ifd;
1045 vec.sfv_flag = 0;
1046 vec.sfv_off = offset;
1047 vec.sfv_len = count;
1048
1049 res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051 if (res < 0 && sbytes)
1052 res = sbytes;
1053 }
1054
1055# endif
1056#else
1057 res = -1;
1058 errno = ENOSYS;
1059#endif
1060
1061 if (res < 0
1062 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063#if __solaris
1064 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065#endif
1066 )
1067 )
1068 {
1069 /* emulate sendfile. this is a major pain in the ass */
1070 dBUF;
1071
1072 res = 0;
1073
1074 while (count)
1075 {
1076 ssize_t cnt;
1077
1078 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079
1080 if (cnt <= 0)
1081 {
1082 if (cnt && !res) res = -1;
1083 break;
1084 }
1085
1086 cnt = write (ofd, aio_buf, cnt);
1087
1088 if (cnt <= 0)
1089 {
1090 if (cnt && !res) res = -1;
1091 break;
1092 }
1093
1094 offset += cnt;
1095 res += cnt;
1096 count -= cnt;
1097 }
1098 }
1099
1100 return res;
1101}
1102
1103/* read a full directory */
1104static void scandir_ (aio_req req, worker *self)
1105{
1106 DIR *dirp;
1107 union
1108 {
1109 X_DIRENT d;
1110 char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111 } *u;
1112 X_DIRENT *entp;
1113 char *name, *names;
1114 int memlen = 4096;
1115 int memofs = 0;
1116 int res = 0;
1117
1118 X_LOCK (wrklock);
1119 self->dirp = dirp = opendir (req->ptr1);
1120 self->dbuf = u = malloc (sizeof (*u));
1121 req->flags |= FLAG_PTR2_FREE;
1122 req->ptr2 = names = malloc (memlen);
1123 X_UNLOCK (wrklock);
1124
1125 if (dirp && u && names)
1126 for (;;)
1127 {
1128 errno = 0;
1129 readdir_r (dirp, &u->d, &entp);
1130
1131 if (!entp)
1132 break;
1133
1134 name = entp->d_name;
1135
1136 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137 {
1138 int len = strlen (name) + 1;
1139
1140 res++;
1141
1142 while (memofs + len > memlen)
1143 {
1144 memlen *= 2;
1145 X_LOCK (wrklock);
1146 req->ptr2 = names = realloc (names, memlen);
1147 X_UNLOCK (wrklock);
1148
1149 if (!names)
1150 break;
1151 }
1152
1153 memcpy (names + memofs, name, len);
1154 memofs += len;
1155 }
1156 }
1157
1158 if (errno)
1159 res = -1;
1160
1161 req->result = res;
1162}
1163
1164/*****************************************************************************/
1165
1166X_THREAD_PROC (aio_proc)
1167{
1168 {//D
1169 aio_req req;
1170 struct timespec ts;
1171 worker *self = (worker *)thr_arg;
1172
1173 /* try to distribute timeouts somewhat randomly */
1174 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176 for (;;)
1177 {
1178 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180 X_LOCK (reqlock);
1181
1182 for (;;)
1183 {
1184 self->req = req = reqq_shift (&req_queue);
1185
1186 if (req)
1187 break;
1188
1189 ++idle;
1190
1191 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192 == ETIMEDOUT)
1193 {
1194 if (idle > max_idle)
1195 {
1196 --idle;
1197 X_UNLOCK (reqlock);
1198 X_LOCK (wrklock);
1199 --started;
1200 X_UNLOCK (wrklock);
1201 goto quit;
1202 }
1203
1204 /* we are allowed to idle, so do so without any timeout */
1205 X_COND_WAIT (reqwait, reqlock);
1206 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207 }
1208
1209 --idle;
1210 }
1211
1212 --nready;
1213
1214 X_UNLOCK (reqlock);
1215
1216 errno = 0; /* strictly unnecessary */
1217
1218 if (!(req->flags & FLAG_CANCELLED))
1219 switch (req->type)
1220 {
1221 case REQ_READ: req->result = req->offs >= 0
1222 ? pread (req->int1, req->ptr1, req->size, req->offs)
1223 : read (req->int1, req->ptr1, req->size); break;
1224 case REQ_WRITE: req->result = req->offs >= 0
1225 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226 : write (req->int1, req->ptr1, req->size); break;
1227
1228 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239 case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240 case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243 case REQ_CLOSE: req->result = close (req->int1); break;
1244 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254 case REQ_FSYNC: req->result = fsync (req->int1); break;
1255 case REQ_READDIR: scandir_ (req, self); break;
1256
1257 case REQ_BUSY:
1258#ifdef _WIN32
1259 Sleep (req->nv1 * 1000.);
1260#else
1261 {
1262 struct timeval tv;
1263
1264 tv.tv_sec = req->nv1;
1265 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267 req->result = select (0, 0, 0, 0, &tv);
1268 }
1269#endif
1270 break;
1271
1272 case REQ_UTIME:
1273 case REQ_FUTIME:
1274 {
1275 struct timeval tv[2];
1276 struct timeval *times;
1277
1278 if (req->nv1 != -1. || req->nv2 != -1.)
1279 {
1280 tv[0].tv_sec = req->nv1;
1281 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282 tv[1].tv_sec = req->nv2;
1283 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285 times = tv;
1286 }
1287 else
1288 times = 0;
1289
1290
1291 req->result = req->type == REQ_FUTIME
1292 ? futimes (req->int1, times)
1293 : utimes (req->ptr1, times);
1294 }
1295
1296 case REQ_GROUP:
1297 case REQ_NOP:
1298 break;
1299
1300 case REQ_QUIT:
1301 goto quit;
1302
1303 default:
1304 req->result = -1;
1305 break;
1306 }
1307
1308 req->errorno = errno;
1309
1310 X_LOCK (reslock);
1311
1312 ++npending;
1313
1314 if (!reqq_push (&res_queue, req))
1315 {
1316 /* write a dummy byte to the pipe so fh becomes ready */
1317 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319 /* optionally signal the main thread asynchronously */
1320 if (main_sig)
1321 pthread_kill (main_tid, main_sig);
1322 }
1323
1324 self->req = 0;
1325 worker_clear (self);
1326
1327 X_UNLOCK (reslock);
1328 }
1329
1330quit:
1331 X_LOCK (wrklock);
1332 worker_free (self);
1333 X_UNLOCK (wrklock);
1334
1335 return 0;
1336 }//D
1337}
1338
1339/*****************************************************************************/
1340
1341static void atfork_prepare (void)
1342{
1343 X_LOCK (wrklock);
1344 X_LOCK (reqlock);
1345 X_LOCK (reslock);
1346#if !HAVE_PREADWRITE
1347 X_LOCK (preadwritelock);
1348#endif
1349#if !HAVE_READDIR_R
1350 X_LOCK (readdirlock);
1351#endif
1352}
1353
1354static void atfork_parent (void)
1355{
1356#if !HAVE_READDIR_R
1357 X_UNLOCK (readdirlock);
1358#endif
1359#if !HAVE_PREADWRITE
1360 X_UNLOCK (preadwritelock);
1361#endif
1362 X_UNLOCK (reslock);
1363 X_UNLOCK (reqlock);
1364 X_UNLOCK (wrklock);
1365}
1366
1367static void atfork_child (void)
1368{
1369 aio_req prv;
1370
1371 while (prv = reqq_shift (&req_queue))
1372 req_destroy (prv);
1373
1374 while (prv = reqq_shift (&res_queue))
1375 req_destroy (prv);
1376
1377 while (wrk_first.next != &wrk_first)
1378 {
1379 worker *wrk = wrk_first.next;
1380
1381 if (wrk->req)
1382 req_destroy (wrk->req);
1383
1384 worker_clear (wrk);
1385 worker_free (wrk);
1386 }
1387
1388 started = 0;
1389 idle = 0;
1390 nreqs = 0;
1391 nready = 0;
1392 npending = 0;
1393
1394 create_respipe ();
1395
1396 atfork_parent ();
1397}
1398
1399#define dREQ \
1400 aio_req req; \
1401 int req_pri = next_pri; \
1402 next_pri = DEFAULT_PRI + PRI_BIAS; \
1403 \
1404 if (SvOK (callback) && !SvROK (callback)) \
1405 croak ("callback must be undef or of reference type"); \
1406 \
1407 Newz (0, req, 1, aio_cb); \
1408 if (!req) \
1409 croak ("out of memory during aio_req allocation"); \
1410 \
1411 req->callback = newSVsv (callback); \
1412 req->pri = req_pri
1413
1414#define REQ_SEND \
1415 req_send (req); \
1416 \
1417 if (GIMME_V != G_VOID) \
1418 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1419
1420MODULE = IO::AIO PACKAGE = IO::AIO 896MODULE = IO::AIO PACKAGE = IO::AIO
1421 897
1422PROTOTYPES: ENABLE 898PROTOTYPES: ENABLE
1423 899
1424BOOT: 900BOOT:
1425{ 901{
902 static const struct {
903 const char *name;
904 IV iv;
905 } *civ, const_iv[] = {
906# define const_niv(name, value) { # name, (IV) value },
907# define const_iv(name) { # name, (IV) name },
908# define const_eio(name) { # name, (IV) EIO_ ## name },
909
910 /* you have to re-run ./gendef0 after adding/Removing any constants here */
911
912 const_iv (ENOSYS)
913 const_iv (EXDEV)
914 const_iv (EBADR)
915
916 const_iv (O_RDONLY)
917 const_iv (O_WRONLY)
918 const_iv (O_RDWR)
919 const_iv (O_CREAT)
920 const_iv (O_TRUNC)
921 const_iv (O_EXCL)
922 const_iv (O_APPEND)
923
924 const_iv (O_ASYNC)
925 const_iv (O_DIRECT)
926 const_iv (O_NOATIME)
927
928 const_iv (O_CLOEXEC)
929 const_iv (O_NOCTTY)
930 const_iv (O_NOFOLLOW)
931 const_iv (O_NONBLOCK)
932 const_iv (O_EXEC)
933 const_iv (O_SEARCH)
934 const_iv (O_DIRECTORY)
935 const_iv (O_DSYNC)
936 const_iv (O_RSYNC)
937 const_iv (O_SYNC)
938 const_iv (O_TTY_INIT)
939
940 const_iv (S_IFIFO)
941 const_iv (S_IFCHR)
942 const_iv (S_IFBLK)
943 const_iv (S_IFLNK)
944 const_iv (S_IFREG)
945 const_iv (S_IFDIR)
946 const_iv (S_IFWHT)
947 const_iv (S_IFSOCK)
948 const_iv (S_IFMT)
949
950 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
951 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
952 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
953 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
954 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
955 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
956
957 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
958 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
959 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
960 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
961 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
962
963 const_iv (ST_RDONLY)
964 const_iv (ST_NOSUID)
965 const_iv (ST_NODEV)
966 const_iv (ST_NOEXEC)
967 const_iv (ST_SYNCHRONOUS)
968 const_iv (ST_MANDLOCK)
969 const_iv (ST_WRITE)
970 const_iv (ST_APPEND)
971 const_iv (ST_IMMUTABLE)
972 const_iv (ST_NOATIME)
973 const_iv (ST_NODIRATIME)
974 const_iv (ST_RELATIME)
975
976 const_iv (PROT_NONE)
977 const_iv (PROT_EXEC)
978 const_iv (PROT_READ)
979 const_iv (PROT_WRITE)
980
981 /*const_iv (MAP_FIXED)*/
982 const_iv (MAP_PRIVATE)
983 const_iv (MAP_SHARED)
984 const_iv (MAP_ANONYMOUS)
985
986 /* linuxish */
987 const_iv (MAP_HUGETLB)
988 const_iv (MAP_LOCKED)
989 const_iv (MAP_NORESERVE)
990 const_iv (MAP_POPULATE)
991 const_iv (MAP_NONBLOCK)
992
993 const_iv (FIEMAP_FLAG_SYNC)
994 const_iv (FIEMAP_FLAG_XATTR)
995 const_iv (FIEMAP_FLAGS_COMPAT)
996 const_iv (FIEMAP_EXTENT_LAST)
997 const_iv (FIEMAP_EXTENT_UNKNOWN)
998 const_iv (FIEMAP_EXTENT_DELALLOC)
999 const_iv (FIEMAP_EXTENT_ENCODED)
1000 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1001 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1002 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1003 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1004 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1005 const_iv (FIEMAP_EXTENT_MERGED)
1006 const_iv (FIEMAP_EXTENT_SHARED)
1007
1008 const_iv (SPLICE_F_MOVE)
1009 const_iv (SPLICE_F_NONBLOCK)
1010 const_iv (SPLICE_F_MORE)
1011 const_iv (SPLICE_F_GIFT)
1012
1013 const_iv (SEEK_DATA)
1014 const_iv (SEEK_HOLE)
1015
1016 /* libeio constants */
1017 const_eio (SEEK_SET)
1018 const_eio (SEEK_CUR)
1019 const_eio (SEEK_END)
1020
1021 const_eio (MCL_FUTURE)
1022 const_eio (MCL_CURRENT)
1023
1024 const_eio (MS_ASYNC)
1025 const_eio (MS_INVALIDATE)
1026 const_eio (MS_SYNC)
1027
1028 const_eio (MT_MODIFY)
1029
1030 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1031 const_eio (SYNC_FILE_RANGE_WRITE)
1032 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1033
1034 const_eio (FALLOC_FL_KEEP_SIZE)
1035 const_eio (FALLOC_FL_PUNCH_HOLE)
1036 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1037 const_eio (FALLOC_FL_ZERO_RANGE)
1038
1039 const_eio (READDIR_DENTS)
1040 const_eio (READDIR_DIRS_FIRST)
1041 const_eio (READDIR_STAT_ORDER)
1042 const_eio (READDIR_FOUND_UNKNOWN)
1043
1044 const_eio (DT_UNKNOWN)
1045 const_eio (DT_FIFO)
1046 const_eio (DT_CHR)
1047 const_eio (DT_DIR)
1048 const_eio (DT_BLK)
1049 const_eio (DT_REG)
1050 const_eio (DT_LNK)
1051 const_eio (DT_SOCK)
1052 const_eio (DT_WHT)
1053 };
1054
1426 HV *stash = gv_stashpv ("IO::AIO", 1); 1055 aio_stash = gv_stashpv ("IO::AIO" , 1);
1056 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1057 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1058 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1427 1059
1428 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1060 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1429 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1061 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1430 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433#ifdef _WIN32
1434 X_MUTEX_CHECK (wrklock);
1435 X_MUTEX_CHECK (reslock);
1436 X_MUTEX_CHECK (reqlock);
1437 X_MUTEX_CHECK (reqwait);
1438 X_MUTEX_CHECK (preadwritelock);
1439 X_MUTEX_CHECK (readdirlock);
1440 1062
1441 X_COND_CHECK (reqwait); 1063 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1442#else
1443 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445#endif
1446 1064
1447 create_respipe (); 1065 reinit ();
1448
1449 X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1450} 1066}
1451 1067
1452void 1068void
1069reinit ()
1070 PROTOTYPE:
1071
1072void
1453max_poll_reqs (int nreqs) 1073max_poll_reqs (unsigned int nreqs)
1454 PROTOTYPE: $ 1074 PROTOTYPE: $
1455 CODE: 1075 CODE:
1456 max_poll_reqs = nreqs; 1076 eio_set_max_poll_reqs (nreqs);
1457 1077
1458void 1078void
1459max_poll_time (double nseconds) 1079max_poll_time (double nseconds)
1460 PROTOTYPE: $ 1080 PROTOTYPE: $
1461 CODE: 1081 CODE:
1462 max_poll_time = nseconds * AIO_TICKS; 1082 eio_set_max_poll_time (nseconds);
1463 1083
1464void 1084void
1465min_parallel (int nthreads) 1085min_parallel (unsigned int nthreads)
1466 PROTOTYPE: $
1467
1468void
1469max_parallel (int nthreads)
1470 PROTOTYPE: $
1471
1472void
1473max_idle (int nthreads)
1474 PROTOTYPE: $ 1086 PROTOTYPE: $
1475 CODE: 1087 CODE:
1476 set_max_idle (nthreads); 1088 eio_set_min_parallel (nthreads);
1477 1089
1478int 1090void
1479max_outstanding (int maxreqs) 1091max_parallel (unsigned int nthreads)
1480 PROTOTYPE: $ 1092 PROTOTYPE: $
1481 CODE: 1093 CODE:
1482 RETVAL = max_outstanding; 1094 eio_set_max_parallel (nthreads);
1095
1096void
1097max_idle (unsigned int nthreads)
1098 PROTOTYPE: $
1099 CODE:
1100 eio_set_max_idle (nthreads);
1101
1102void
1103idle_timeout (unsigned int seconds)
1104 PROTOTYPE: $
1105 CODE:
1106 eio_set_idle_timeout (seconds);
1107
1108void
1109max_outstanding (unsigned int maxreqs)
1110 PROTOTYPE: $
1111 CODE:
1483 max_outstanding = maxreqs; 1112 max_outstanding = maxreqs;
1484 OUTPUT:
1485 RETVAL
1486 1113
1487void 1114void
1488aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1115aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1489 PROTOTYPE: $$$;$
1490 PPCODE: 1116 PPCODE:
1491{ 1117{
1492 dREQ; 1118 dREQ;
1493 1119
1120 req->type = EIO_WD_OPEN;
1121 req_set_path1 (req, pathname);
1122
1123 REQ_SEND;
1124}
1125
1126void
1127aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1128 PPCODE:
1129{
1130 dREQ;
1131
1494 req->type = REQ_OPEN; 1132 req->type = EIO_OPEN;
1495 req->sv1 = newSVsv (pathname); 1133 req_set_path1 (req, pathname);
1496 req->ptr1 = SvPVbyte_nolen (req->sv1);
1497 req->int1 = flags; 1134 req->int1 = flags;
1498 req->mode = mode; 1135 req->int2 = mode;
1499 1136
1500 REQ_SEND; 1137 REQ_SEND;
1501} 1138}
1502 1139
1503void 1140void
1504aio_close (SV *fh, SV *callback=&PL_sv_undef) 1141aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1505 PROTOTYPE: $;$
1506 ALIAS: 1142 ALIAS:
1507 aio_close = REQ_CLOSE
1508 aio_fsync = REQ_FSYNC 1143 aio_fsync = EIO_FSYNC
1509 aio_fdatasync = REQ_FDATASYNC 1144 aio_fdatasync = EIO_FDATASYNC
1145 aio_syncfs = EIO_SYNCFS
1510 PPCODE: 1146 PPCODE:
1511{ 1147{
1148 int fd = s_fileno_croak (fh, 0);
1512 dREQ; 1149 dREQ;
1513 1150
1514 req->type = ix; 1151 req->type = ix;
1515 req->sv1 = newSVsv (fh); 1152 req->sv1 = newSVsv (fh);
1516 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1153 req->int1 = fd;
1517 1154
1518 REQ_SEND (req); 1155 REQ_SEND;
1519} 1156}
1520 1157
1521void 1158void
1159aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1160 PPCODE:
1161{
1162 int fd = s_fileno_croak (fh, 0);
1163 dREQ;
1164
1165 req->type = EIO_SYNC_FILE_RANGE;
1166 req->sv1 = newSVsv (fh);
1167 req->int1 = fd;
1168 req->offs = offset;
1169 req->size = nbytes;
1170 req->int2 = flags;
1171
1172 REQ_SEND;
1173}
1174
1175void
1176aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1177 PPCODE:
1178{
1179 int fd = s_fileno_croak (fh, 0);
1180 dREQ;
1181
1182 req->type = EIO_FALLOCATE;
1183 req->sv1 = newSVsv (fh);
1184 req->int1 = fd;
1185 req->int2 = mode;
1186 req->offs = offset;
1187 req->size = len;
1188
1189 REQ_SEND;
1190}
1191
1192void
1193aio_close (SV *fh, SV *callback = &PL_sv_undef)
1194 PPCODE:
1195{
1196 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1197 int fd = s_fileno_croak (fh, 0);
1198 dREQ;
1199
1200 if (expect_false (close_fd < 0))
1201 {
1202 int pipefd [2];
1203
1204 if (
1205#ifdef _WIN32
1206 _pipe (pipefd, 1, _O_BINARY) < 0
1207#else
1208 pipe (pipefd) < 0
1209 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1210#endif
1211 || close (pipefd [1]) < 0
1212 )
1213 abort (); /*D*/
1214
1215 close_fd = pipefd [0];
1216 }
1217
1218 req->type = EIO_DUP2;
1219 req->int1 = close_fd;
1220 req->sv2 = newSVsv (fh);
1221 req->int2 = fd;
1222
1223 REQ_SEND;
1224}
1225
1226void
1227aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1228 PPCODE:
1229{
1230 int fd = s_fileno_croak (fh, 0);
1231 dREQ;
1232
1233 req->type = EIO_SEEK;
1234 req->sv1 = newSVsv (fh);
1235 req->int1 = fd;
1236 req->offs = SvVAL64 (offset);
1237 req->int2 = whence;
1238
1239 REQ_SEND;
1240}
1241
1242void
1522aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1243aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1523 ALIAS: 1244 ALIAS:
1524 aio_read = REQ_READ 1245 aio_read = EIO_READ
1525 aio_write = REQ_WRITE 1246 aio_write = EIO_WRITE
1526 PROTOTYPE: $$$$$;$
1527 PPCODE: 1247 PPCODE:
1528{ 1248{
1529 STRLEN svlen; 1249 STRLEN svlen;
1250 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530 char *svptr = SvPVbyte (data, svlen); 1251 char *svptr = SvPVbyte (data, svlen);
1531 UV len = SvUV (length); 1252 UV len = SvUV (length);
1532 1253
1533 SvUPGRADE (data, SVt_PV);
1534 SvPOK_on (data);
1535
1536 if (dataoffset < 0) 1254 if (dataoffset < 0)
1537 dataoffset += svlen; 1255 dataoffset += svlen;
1538 1256
1539 if (dataoffset < 0 || dataoffset > svlen) 1257 if (dataoffset < 0 || dataoffset > svlen)
1540 croak ("dataoffset outside of data scalar"); 1258 croak ("dataoffset outside of data scalar");
1541 1259
1542 if (ix == REQ_WRITE) 1260 if (ix == EIO_WRITE)
1543 { 1261 {
1544 /* write: check length and adjust. */ 1262 /* write: check length and adjust. */
1545 if (!SvOK (length) || len + dataoffset > svlen) 1263 if (!SvOK (length) || len + dataoffset > svlen)
1546 len = svlen - dataoffset; 1264 len = svlen - dataoffset;
1547 } 1265 }
1548 else 1266 else
1549 { 1267 {
1550 /* read: grow scalar as necessary */ 1268 /* read: check type and grow scalar as necessary */
1269 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1551 svptr = SvGROW (data, len + dataoffset + 1); 1270 svptr = sv_grow (data, len + dataoffset + 1);
1271 else if (SvCUR (data) < len + dataoffset)
1272 croak ("length + dataoffset outside of scalar, and cannot grow");
1552 } 1273 }
1553
1554 if (len < 0)
1555 croak ("length must not be negative");
1556 1274
1557 { 1275 {
1558 dREQ; 1276 dREQ;
1559 1277
1560 req->type = ix; 1278 req->type = ix;
1561 req->sv1 = newSVsv (fh); 1279 req->sv1 = newSVsv (fh);
1562 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1280 req->int1 = fd;
1563 : IoOFP (sv_2io (fh)));
1564 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1281 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565 req->size = len; 1282 req->size = len;
1566 req->sv2 = SvREFCNT_inc (data); 1283 req->sv2 = SvREFCNT_inc (data);
1567 req->ptr1 = (char *)svptr + dataoffset; 1284 req->ptr2 = (char *)svptr + dataoffset;
1568 req->stroffset = dataoffset; 1285 req->stroffset = dataoffset;
1569 1286
1570 if (!SvREADONLY (data)) 1287 if (!SvREADONLY (data))
1571 { 1288 {
1572 SvREADONLY_on (data); 1289 SvREADONLY_on (data);
… …
1576 REQ_SEND; 1293 REQ_SEND;
1577 } 1294 }
1578} 1295}
1579 1296
1580void 1297void
1581aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1298aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1582 PROTOTYPE: $$;$ 1299 ALIAS:
1300 aio_readlink = EIO_READLINK
1301 aio_realpath = EIO_REALPATH
1583 PPCODE: 1302 PPCODE:
1584{ 1303{
1585 SV *data;
1586 dREQ; 1304 dREQ;
1587 1305
1588 data = newSV (NAME_MAX);
1589 SvPOK_on (data);
1590
1591 req->type = REQ_READLINK; 1306 req->type = ix;
1592 req->sv1 = newSVsv (path); 1307 req_set_path1 (req, pathname);
1593 req->ptr2 = SvPVbyte_nolen (req->sv1);
1594 req->sv2 = data;
1595 req->ptr1 = SvPVbyte_nolen (data);
1596 1308
1597 REQ_SEND; 1309 REQ_SEND;
1598} 1310}
1599 1311
1600void 1312void
1601aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) 1313aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1602 PROTOTYPE: $$$$;$
1603 PPCODE: 1314 PPCODE:
1604{ 1315{
1316 int ifd = s_fileno_croak (in_fh , 0);
1317 int ofd = s_fileno_croak (out_fh, 1);
1605 dREQ; 1318 dREQ;
1606 1319
1607 req->type = REQ_SENDFILE; 1320 req->type = EIO_SENDFILE;
1608 req->sv1 = newSVsv (out_fh); 1321 req->sv1 = newSVsv (out_fh);
1609 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1322 req->int1 = ofd;
1610 req->sv2 = newSVsv (in_fh); 1323 req->sv2 = newSVsv (in_fh);
1611 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1324 req->int2 = ifd;
1612 req->offs = SvVAL64 (in_offset); 1325 req->offs = in_offset;
1613 req->size = length; 1326 req->size = length;
1614 1327
1615 REQ_SEND; 1328 REQ_SEND;
1616} 1329}
1617 1330
1618void 1331void
1619aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) 1332aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1620 PROTOTYPE: $$$;$
1621 PPCODE: 1333 PPCODE:
1622{ 1334{
1335 int fd = s_fileno_croak (fh, 0);
1623 dREQ; 1336 dREQ;
1624 1337
1625 req->type = REQ_READAHEAD; 1338 req->type = EIO_READAHEAD;
1626 req->sv1 = newSVsv (fh); 1339 req->sv1 = newSVsv (fh);
1627 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1340 req->int1 = fd;
1628 req->offs = SvVAL64 (offset); 1341 req->offs = offset;
1629 req->size = length; 1342 req->size = length;
1630 1343
1631 REQ_SEND; 1344 REQ_SEND;
1632} 1345}
1633 1346
1634void 1347void
1635aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) 1348aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1636 ALIAS: 1349 ALIAS:
1637 aio_stat = REQ_STAT 1350 aio_stat = EIO_STAT
1638 aio_lstat = REQ_LSTAT 1351 aio_lstat = EIO_LSTAT
1352 aio_statvfs = EIO_STATVFS
1639 PPCODE: 1353 PPCODE:
1640{ 1354{
1641 dREQ; 1355 dREQ;
1642 1356
1643 req->ptr2 = malloc (sizeof (Stat_t)); 1357 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1644 if (!req->ptr2)
1645 {
1646 req_destroy (req);
1647 croak ("out of memory during aio_stat statdata allocation");
1648 }
1649
1650 req->flags |= FLAG_PTR2_FREE;
1651 req->sv1 = newSVsv (fh_or_path);
1652
1653 if (SvPOK (fh_or_path))
1654 {
1655 req->type = ix;
1656 req->ptr1 = SvPVbyte_nolen (req->sv1);
1657 }
1658 else
1659 {
1660 req->type = REQ_FSTAT;
1661 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1662 }
1663 1358
1664 REQ_SEND; 1359 REQ_SEND;
1665} 1360}
1666 1361
1362UV
1363major (UV dev)
1364 ALIAS:
1365 minor = 1
1366 CODE:
1367 RETVAL = ix ? major (dev) : minor (dev);
1368 OUTPUT:
1369 RETVAL
1370
1371UV
1372makedev (UV maj, UV min)
1373 CODE:
1374 RETVAL = makedev (maj, min);
1375 OUTPUT:
1376 RETVAL
1377
1667void 1378void
1668aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1379aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1669 PPCODE: 1380 PPCODE:
1670{ 1381{
1671 dREQ; 1382 dREQ;
1672 1383
1673 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1384 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1385 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675 req->sv1 = newSVsv (fh_or_path); 1386 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1676
1677 if (SvPOK (fh_or_path))
1678 {
1679 req->type = REQ_UTIME;
1680 req->ptr1 = SvPVbyte_nolen (req->sv1);
1681 }
1682 else
1683 {
1684 req->type = REQ_FUTIME;
1685 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686 }
1687 1387
1688 REQ_SEND; 1388 REQ_SEND;
1689} 1389}
1690 1390
1691void 1391void
1692aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) 1392aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1693 PPCODE: 1393 PPCODE:
1694{ 1394{
1695 dREQ; 1395 dREQ;
1696 1396
1697 req->sv1 = newSVsv (fh_or_path);
1698 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1397 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699 1398 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1700 if (SvPOK (fh_or_path))
1701 {
1702 req->type = REQ_TRUNCATE;
1703 req->ptr1 = SvPVbyte_nolen (req->sv1);
1704 }
1705 else
1706 {
1707 req->type = REQ_FTRUNCATE;
1708 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709 }
1710 1399
1711 REQ_SEND; 1400 REQ_SEND;
1712} 1401}
1713 1402
1714void 1403void
1715aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1404aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1716 PPCODE: 1405 PPCODE:
1717{ 1406{
1718 dREQ; 1407 dREQ;
1719 1408
1720 req->mode = mode; 1409 req->int2 = mode;
1721 req->sv1 = newSVsv (fh_or_path); 1410 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1722
1723 if (SvPOK (fh_or_path))
1724 {
1725 req->type = REQ_CHMOD;
1726 req->ptr1 = SvPVbyte_nolen (req->sv1);
1727 }
1728 else
1729 {
1730 req->type = REQ_FCHMOD;
1731 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732 }
1733 1411
1734 REQ_SEND; 1412 REQ_SEND;
1735} 1413}
1736 1414
1737void 1415void
1738aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) 1416aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1739 PPCODE: 1417 PPCODE:
1740{ 1418{
1741 dREQ; 1419 dREQ;
1742 1420
1743 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1421 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1422 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745 req->sv1 = newSVsv (fh_or_path); 1423 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1746
1747 if (SvPOK (fh_or_path))
1748 {
1749 req->type = REQ_CHOWN;
1750 req->ptr1 = SvPVbyte_nolen (req->sv1);
1751 }
1752 else
1753 {
1754 req->type = REQ_FCHOWN;
1755 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756 }
1757 1424
1758 REQ_SEND; 1425 REQ_SEND;
1759} 1426}
1760 1427
1761void 1428void
1429aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1430 PPCODE:
1431{
1432 dREQ;
1433
1434 req->type = EIO_READDIR;
1435 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1436
1437 if (flags & EIO_READDIR_DENTS)
1438 req->int1 |= EIO_READDIR_CUSTOM2;
1439
1440 req_set_path1 (req, pathname);
1441
1442 REQ_SEND;
1443}
1444
1445void
1446aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1447 PPCODE:
1448{
1449 dREQ;
1450
1451 req->type = EIO_MKDIR;
1452 req->int2 = mode;
1453 req_set_path1 (req, pathname);
1454
1455 REQ_SEND;
1456}
1457
1458void
1762aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1459aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1763 ALIAS: 1460 ALIAS:
1764 aio_unlink = REQ_UNLINK 1461 aio_unlink = EIO_UNLINK
1765 aio_rmdir = REQ_RMDIR 1462 aio_rmdir = EIO_RMDIR
1766 aio_readdir = REQ_READDIR 1463 aio_readdir = EIO_READDIR
1767 PPCODE: 1464 PPCODE:
1768{ 1465{
1769 dREQ; 1466 dREQ;
1770 1467
1771 req->type = ix; 1468 req->type = ix;
1772 req->sv1 = newSVsv (pathname); 1469 req_set_path1 (req, pathname);
1773 req->ptr1 = SvPVbyte_nolen (req->sv1);
1774 1470
1775 REQ_SEND; 1471 REQ_SEND;
1776} 1472}
1777 1473
1778void 1474void
1779aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) 1475aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1476 ALIAS:
1477 aio_link = EIO_LINK
1478 aio_symlink = EIO_SYMLINK
1479 aio_rename = EIO_RENAME
1780 PPCODE: 1480 PPCODE:
1781{ 1481{
1782 dREQ; 1482 eio_wd wd2 = 0;
1783
1784 req->type = REQ_MKDIR;
1785 req->sv1 = newSVsv (pathname);
1786 req->ptr1 = SvPVbyte_nolen (req->sv1);
1787 req->mode = mode;
1788
1789 REQ_SEND;
1790}
1791
1792void
1793aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794 ALIAS:
1795 aio_link = REQ_LINK
1796 aio_symlink = REQ_SYMLINK
1797 aio_rename = REQ_RENAME
1798 PPCODE:
1799{
1800 dREQ; 1483 dREQ;
1801 1484
1802 req->type = ix; 1485 req->type = ix;
1803 req->sv2 = newSVsv (oldpath); 1486 req_set_path1 (req, oldpath);
1804 req->ptr2 = SvPVbyte_nolen (req->sv2); 1487 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1805 req->sv1 = newSVsv (newpath); 1488 req->int3 = (long)wd2;
1806 req->ptr1 = SvPVbyte_nolen (req->sv1);
1807 1489
1808 REQ_SEND; 1490 REQ_SEND;
1809} 1491}
1810 1492
1811void 1493void
1812aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1494aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1813 PPCODE: 1495 PPCODE:
1814{ 1496{
1815 dREQ; 1497 dREQ;
1816 1498
1817 req->type = REQ_MKNOD; 1499 req->type = EIO_MKNOD;
1818 req->sv1 = newSVsv (pathname);
1819 req->ptr1 = SvPVbyte_nolen (req->sv1);
1820 req->mode = (mode_t)mode; 1500 req->int2 = (mode_t)mode;
1821 req->offs = dev; 1501 req->offs = dev;
1502 req_set_path1 (req, pathname);
1822 1503
1823 REQ_SEND; 1504 REQ_SEND;
1824} 1505}
1825 1506
1826void 1507void
1508aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1509 ALIAS:
1510 aio_mtouch = EIO_MTOUCH
1511 aio_msync = EIO_MSYNC
1512 PPCODE:
1513{
1514 STRLEN svlen;
1515 char *svptr = SvPVbyte (data, svlen);
1516 UV len = SvUV (length);
1517
1518 if (offset < 0)
1519 offset += svlen;
1520
1521 if (offset < 0 || offset > svlen)
1522 croak ("offset outside of scalar");
1523
1524 if (!SvOK (length) || len + offset > svlen)
1525 len = svlen - offset;
1526
1527 {
1528 dREQ;
1529
1530 req->type = ix;
1531 req->sv2 = SvREFCNT_inc (data);
1532 req->ptr2 = (char *)svptr + offset;
1533 req->size = len;
1534 req->int1 = flags;
1535
1536 REQ_SEND;
1537 }
1538}
1539
1540void
1541aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1542 PPCODE:
1543{
1544 STRLEN svlen;
1545 char *svptr = SvPVbyte (data, svlen);
1546 UV len = SvUV (length);
1547
1548 if (offset < 0)
1549 offset += svlen;
1550
1551 if (offset < 0 || offset > svlen)
1552 croak ("offset outside of scalar");
1553
1554 if (!SvOK (length) || len + offset > svlen)
1555 len = svlen - offset;
1556
1557 {
1558 dREQ;
1559
1560 req->type = EIO_MLOCK;
1561 req->sv2 = SvREFCNT_inc (data);
1562 req->ptr2 = (char *)svptr + offset;
1563 req->size = len;
1564
1565 REQ_SEND;
1566 }
1567}
1568
1569void
1570aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1571 PPCODE:
1572{
1573 dREQ;
1574
1575 req->type = EIO_MLOCKALL;
1576 req->int1 = flags;
1577
1578 REQ_SEND;
1579}
1580
1581void
1582aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1583 PPCODE:
1584{
1585 int fd = s_fileno_croak (fh, 0);
1586 dREQ;
1587
1588 req->type = EIO_CUSTOM;
1589 req->sv1 = newSVsv (fh);
1590 req->int1 = fd;
1591
1592 req->feed = fiemap;
1593#if HAVE_FIEMAP
1594 /* keep our fingers crossed that the next two types are 64 bit */
1595 req->offs = start;
1596 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1597 req->int2 = flags;
1598 req->int3 = SvOK (count) ? SvIV (count) : -1;
1599#endif
1600
1601 REQ_SEND;
1602}
1603
1604void
1827aio_busy (double delay, SV *callback=&PL_sv_undef) 1605aio_busy (double delay, SV *callback = &PL_sv_undef)
1828 PPCODE: 1606 PPCODE:
1829{ 1607{
1830 dREQ; 1608 dREQ;
1831 1609
1832 req->type = REQ_BUSY; 1610 req->type = EIO_BUSY;
1833 req->nv1 = delay < 0. ? 0. : delay; 1611 req->nv1 = delay < 0. ? 0. : delay;
1834 1612
1835 REQ_SEND; 1613 REQ_SEND;
1836} 1614}
1837 1615
1838void 1616void
1839aio_group (SV *callback=&PL_sv_undef) 1617aio_group (SV *callback = &PL_sv_undef)
1840 PROTOTYPE: ;$
1841 PPCODE: 1618 PPCODE:
1842{ 1619{
1843 dREQ; 1620 dREQ;
1844 1621
1845 req->type = REQ_GROUP; 1622 req->type = EIO_GROUP;
1846 1623
1624 PUTBACK;
1847 req_send (req); 1625 req_submit (req);
1626 SPAGAIN;
1627
1848 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1628 XPUSHs (req_sv (req, aio_grp_stash));
1849} 1629}
1850 1630
1851void 1631void
1852aio_nop (SV *callback=&PL_sv_undef) 1632aio_nop (SV *callback = &PL_sv_undef)
1633 ALIAS:
1634 aio_nop = EIO_NOP
1635 aio_sync = EIO_SYNC
1853 PPCODE: 1636 PPCODE:
1854{ 1637{
1855 dREQ; 1638 dREQ;
1856 1639
1857 req->type = REQ_NOP; 1640 req->type = ix;
1858 1641
1859 REQ_SEND; 1642 REQ_SEND;
1860} 1643}
1861 1644
1862int 1645int
1863aioreq_pri (int pri = 0) 1646aioreq_pri (int pri = NO_INIT)
1864 PROTOTYPE: ;$
1865 CODE: 1647 CODE:
1866 RETVAL = next_pri - PRI_BIAS; 1648 RETVAL = next_pri;
1867 if (items > 0) 1649 if (items > 0)
1868 { 1650 {
1869 if (pri < PRI_MIN) pri = PRI_MIN; 1651 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870 if (pri > PRI_MAX) pri = PRI_MAX; 1652 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871 next_pri = pri + PRI_BIAS; 1653 next_pri = pri;
1872 } 1654 }
1873 OUTPUT: 1655 OUTPUT:
1874 RETVAL 1656 RETVAL
1875 1657
1876void 1658void
1877aioreq_nice (int nice = 0) 1659aioreq_nice (int nice = 0)
1878 CODE: 1660 CODE:
1879 nice = next_pri - nice; 1661 nice = next_pri - nice;
1880 if (nice < PRI_MIN) nice = PRI_MIN; 1662 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881 if (nice > PRI_MAX) nice = PRI_MAX; 1663 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882 next_pri = nice + PRI_BIAS; 1664 next_pri = nice;
1883 1665
1884void 1666void
1885flush () 1667flush ()
1886 PROTOTYPE:
1887 CODE: 1668 CODE:
1888 while (nreqs) 1669 while (eio_nreqs ())
1889 { 1670 {
1890 poll_wait (); 1671 poll_wait ();
1891 poll_cb (); 1672 poll_cb ();
1892 } 1673 }
1893 1674
1894int 1675int
1895poll() 1676poll ()
1896 PROTOTYPE:
1897 CODE: 1677 CODE:
1898 poll_wait (); 1678 poll_wait ();
1899 RETVAL = poll_cb (); 1679 RETVAL = poll_cb ();
1900 OUTPUT: 1680 OUTPUT:
1901 RETVAL 1681 RETVAL
1902 1682
1903int 1683int
1904poll_fileno() 1684poll_fileno ()
1905 PROTOTYPE:
1906 CODE: 1685 CODE:
1907 RETVAL = respipe [0]; 1686 RETVAL = s_epipe_fd (&respipe);
1908 OUTPUT: 1687 OUTPUT:
1909 RETVAL 1688 RETVAL
1910 1689
1911int 1690int
1912poll_cb(...) 1691poll_cb (...)
1913 PROTOTYPE: 1692 PROTOTYPE:
1914 CODE: 1693 CODE:
1915 RETVAL = poll_cb (); 1694 RETVAL = poll_cb ();
1916 OUTPUT: 1695 OUTPUT:
1917 RETVAL 1696 RETVAL
1918 1697
1919void 1698void
1920poll_wait() 1699poll_wait ()
1921 PROTOTYPE:
1922 CODE: 1700 CODE:
1923 poll_wait (); 1701 poll_wait ();
1924 1702
1925void
1926setsig (int signum = SIGIO)
1927 PROTOTYPE: ;$
1928 CODE:
1929{
1930 if (block_sig_level)
1931 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933 X_LOCK (reslock);
1934 main_tid = pthread_self ();
1935 main_sig = signum;
1936 X_UNLOCK (reslock);
1937
1938 if (main_sig && npending)
1939 pthread_kill (main_tid, main_sig);
1940}
1941
1942void
1943aio_block (SV *cb)
1944 PROTOTYPE: &
1945 PPCODE:
1946{
1947 int count;
1948
1949 block_sig ();
1950 PUSHMARK (SP);
1951 PUTBACK;
1952 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953 SPAGAIN;
1954 unblock_sig ();
1955
1956 if (SvTRUE (ERRSV))
1957 croak (0);
1958
1959 XSRETURN (count);
1960}
1961
1962int 1703int
1963nreqs() 1704nreqs ()
1964 PROTOTYPE:
1965 CODE: 1705 CODE:
1966 RETVAL = nreqs; 1706 RETVAL = eio_nreqs ();
1967 OUTPUT: 1707 OUTPUT:
1968 RETVAL 1708 RETVAL
1969 1709
1970int 1710int
1971nready() 1711nready ()
1972 PROTOTYPE:
1973 CODE: 1712 CODE:
1974 RETVAL = get_nready (); 1713 RETVAL = eio_nready ();
1975 OUTPUT: 1714 OUTPUT:
1976 RETVAL 1715 RETVAL
1977 1716
1978int 1717int
1979npending() 1718npending ()
1980 PROTOTYPE:
1981 CODE: 1719 CODE:
1982 RETVAL = get_npending (); 1720 RETVAL = eio_npending ();
1983 OUTPUT: 1721 OUTPUT:
1984 RETVAL 1722 RETVAL
1985 1723
1986int 1724int
1987nthreads() 1725nthreads ()
1988 PROTOTYPE:
1989 CODE: 1726 CODE:
1990 if (WORDACCESS_UNSAFE) X_LOCK (wrklock); 1727 RETVAL = eio_nthreads ();
1991 RETVAL = started;
1992 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993 OUTPUT: 1728 OUTPUT:
1994 RETVAL 1729 RETVAL
1995 1730
1731int
1732fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1733 CODE:
1734 RETVAL = posix_fadvise (fh, offset, length, advice);
1735 OUTPUT:
1736 RETVAL
1737
1738IV
1739sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1740 CODE:
1741 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1742 OUTPUT:
1743 RETVAL
1744
1745void
1746mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1747 PPCODE:
1748 sv_unmagic (scalar, MMAP_MAGIC);
1749{
1750 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1751 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1752 if (addr == (void *)-1)
1753 XSRETURN_NO;
1754
1755 sv_force_normal (scalar);
1756
1757 /* we store the length in mg_obj, as namlen is I32 :/ */
1758 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1759 ->mg_obj = (SV *)length;
1760
1761 SvUPGRADE (scalar, SVt_PV); /* nop... */
1762
1763 if (!(prot & PROT_WRITE))
1764 SvREADONLY_on (scalar);
1765
1766 if (SvLEN (scalar))
1767 Safefree (SvPVX (scalar));
1768
1769 SvPVX (scalar) = (char *)addr;
1770 SvCUR_set (scalar, length);
1771 SvLEN_set (scalar, 0);
1772 SvPOK_only (scalar);
1773
1774 XSRETURN_YES;
1775}
1776
1777void
1778munmap (SV *scalar)
1779 CODE:
1780 sv_unmagic (scalar, MMAP_MAGIC);
1781
1782int
1783madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1784 ALIAS:
1785 mprotect = 1
1786 CODE:
1787{
1788 STRLEN svlen;
1789 void *addr = SvPVbyte (scalar, svlen);
1790 STRLEN len = SvUV (length);
1791
1792 if (offset < 0)
1793 offset += svlen;
1794
1795 if (offset < 0 || offset > svlen)
1796 croak ("offset outside of scalar");
1797
1798 if (!SvOK (length) || len + offset > svlen)
1799 len = svlen - offset;
1800
1801 addr = (void *)(((intptr_t)addr) + offset);
1802 eio_page_align (&addr, &len);
1803
1804 switch (ix)
1805 {
1806 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1807 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1808 }
1809}
1810 OUTPUT:
1811 RETVAL
1812
1813int
1814munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1815 CODE:
1816{
1817 STRLEN svlen;
1818 void *addr = SvPVbyte (scalar, svlen);
1819 size_t len = SvUV (length);
1820
1821 if (offset < 0)
1822 offset += svlen;
1823
1824 if (offset < 0 || offset > svlen)
1825 croak ("offset outside of scalar");
1826
1827 if (!SvOK (length) || len + offset > svlen)
1828 len = svlen - offset;
1829
1830 addr = (void *)(((intptr_t)addr) + offset);
1831 eio_page_align (&addr, &len);
1832#if _POSIX_MEMLOCK_RANGE
1833 RETVAL = munlock (addr, len);
1834#else
1835 RETVAL = EIO_ENOSYS ();
1836#endif
1837}
1838 OUTPUT:
1839 RETVAL
1840
1841int
1842munlockall ()
1843 CODE:
1844#if _POSIX_MEMLOCK
1845 munlockall ();
1846#else
1847 RETVAL = EIO_ENOSYS ();
1848#endif
1849 OUTPUT:
1850 RETVAL
1851
1852int
1853splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1854 CODE:
1855{
1856#if HAVE_LINUX_SPLICE
1857 loff_t off_in_, off_out_;
1858 RETVAL = splice (
1859 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1860 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1861 length, flags
1862 );
1863#else
1864 RETVAL = EIO_ENOSYS ();
1865#endif
1866}
1867 OUTPUT:
1868 RETVAL
1869
1870int
1871tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1872 CODE:
1873#if HAVE_LINUX_SPLICE
1874 RETVAL = tee (rfh, wfh, length, flags);
1875#else
1876 RETVAL = EIO_ENOSYS ();
1877#endif
1878 OUTPUT:
1879 RETVAL
1880
1881int
1882pipesize (aio_rfd rfh, int new_size = -1)
1883 PROTOTYPE: $;$
1884 CODE:
1885#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1886 if (new_size >= 0)
1887 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1888 else
1889 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1890#else
1891 errno = ENOSYS;
1892 RETVAL = -1;
1893#endif
1894 OUTPUT:
1895 RETVAL
1896
1897void
1898pipe2 (int flags = 0)
1899 PROTOTYPE: ;$
1900 PPCODE:
1901{
1902 int fd[2];
1903 int res;
1904
1905 if (flags)
1906#if HAVE_PIPE2
1907 res = pipe2 (fd, flags);
1908#else
1909 res = (errno = ENOSYS, -1);
1910#endif
1911 else
1912 res = pipe (fd);
1913
1914 if (!res)
1915 {
1916 EXTEND (SP, 2);
1917 PUSHs (newmortalFH (fd[0], O_RDONLY));
1918 PUSHs (newmortalFH (fd[1], O_WRONLY));
1919 }
1920}
1921
1922void _on_next_submit (SV *cb)
1923 CODE:
1924 SvREFCNT_dec (on_next_submit);
1925 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1926
1996PROTOTYPES: DISABLE 1927PROTOTYPES: DISABLE
1928
1929MODULE = IO::AIO PACKAGE = IO::AIO::WD
1930
1931BOOT:
1932{
1933 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1934 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1935}
1936
1937void
1938DESTROY (SV *self)
1939 CODE:
1940{
1941 aio_wd wd = SvAIO_WD (self);
1942#if HAVE_AT
1943 {
1944 SV *callback = &PL_sv_undef;
1945 dREQ; /* clobbers next_pri :/ */
1946 next_pri = req->pri; /* restore next_pri */
1947 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1948 req->type = EIO_WD_CLOSE;
1949 req->wd = wd;
1950 REQ_SEND;
1951 }
1952#else
1953 eio_wd_close_sync (wd);
1954#endif
1955}
1997 1956
1998MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1957MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999 1958
2000void 1959void
2001cancel (aio_req_ornot req) 1960cancel (aio_req_ornot req)
2002 CODE: 1961 CODE:
2003 req_cancel (req); 1962 eio_cancel (req);
2004 1963
2005void 1964void
2006cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1965cb (aio_req_ornot req, SV *callback = NO_INIT)
2007 CODE: 1966 PPCODE:
1967{
1968 if (GIMME_V != G_VOID)
1969 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1970
1971 if (items > 1)
1972 {
1973 SV *cb_cv = get_cb (callback);
1974
2008 SvREFCNT_dec (req->callback); 1975 SvREFCNT_dec (req->callback);
2009 req->callback = newSVsv (callback); 1976 req->callback = SvREFCNT_inc (cb_cv);
1977 }
1978}
2010 1979
2011MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1980MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012 1981
2013void 1982void
2014add (aio_req grp, ...) 1983add (aio_req grp, ...)
2015 PPCODE: 1984 PPCODE:
2016{ 1985{
2017 int i; 1986 int i;
2018 aio_req req;
2019
2020 if (main_sig && !block_sig_level)
2021 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022 1987
2023 if (grp->int1 == 2) 1988 if (grp->int1 == 2)
2024 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1989 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025 1990
2026 for (i = 1; i < items; ++i ) 1991 for (i = 1; i < items; ++i )
2027 { 1992 {
1993 aio_req req;
1994
2028 if (GIMME_V != G_VOID) 1995 if (GIMME_V != G_VOID)
2029 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1996 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030 1997
2031 req = SvAIO_REQ (ST (i)); 1998 req = SvAIO_REQ (ST (i));
2032 1999
2033 if (req) 2000 if (req)
2034 { 2001 eio_grp_add (grp, req);
2035 ++grp->size;
2036 req->grp = grp;
2037
2038 req->grp_prev = 0;
2039 req->grp_next = grp->grp_first;
2040
2041 if (grp->grp_first)
2042 grp->grp_first->grp_prev = req;
2043
2044 grp->grp_first = req;
2045 }
2046 } 2002 }
2047} 2003}
2048 2004
2049void 2005void
2050cancel_subs (aio_req_ornot req) 2006cancel_subs (aio_req_ornot req)
… …
2059 AV *av; 2015 AV *av;
2060 2016
2061 grp->errorno = errno; 2017 grp->errorno = errno;
2062 2018
2063 av = newAV (); 2019 av = newAV ();
2020 av_extend (av, items - 1);
2064 2021
2065 for (i = 1; i < items; ++i ) 2022 for (i = 1; i < items; ++i )
2066 av_push (av, newSVsv (ST (i))); 2023 av_push (av, newSVsv (ST (i)));
2067 2024
2068 SvREFCNT_dec (grp->sv1); 2025 SvREFCNT_dec (grp->sv1);
… …
2075 grp->errorno = errorno; 2032 grp->errorno = errorno;
2076 2033
2077void 2034void
2078limit (aio_req grp, int limit) 2035limit (aio_req grp, int limit)
2079 CODE: 2036 CODE:
2080 grp->int2 = limit; 2037 eio_grp_limit (grp, limit);
2081 aio_grp_feed (grp);
2082 2038
2083void 2039void
2084feed (aio_req grp, SV *callback=&PL_sv_undef) 2040feed (aio_req grp, SV *callback = &PL_sv_undef)
2085 CODE: 2041 CODE:
2086{ 2042{
2087 SvREFCNT_dec (grp->sv2); 2043 SvREFCNT_dec (grp->sv2);
2088 grp->sv2 = newSVsv (callback); 2044 grp->sv2 = newSVsv (callback);
2045 grp->feed = aio_grp_feed;
2089 2046
2090 if (grp->int2 <= 0) 2047 if (grp->int2 <= 0)
2091 grp->int2 = 2; 2048 grp->int2 = 2;
2092 2049
2093 aio_grp_feed (grp); 2050 eio_grp_limit (grp, grp->int2);
2094} 2051}
2095 2052

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