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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC vs.
Revision 1.247 by root, Fri Jun 23 22:09:50 2017 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 8
9#include "autoconf/config.h" 9#include "schmorp.h"
10 10
11#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h> 12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 14#include <sys/types.h>
17#include <sys/stat.h> 15#include <sys/stat.h>
18#include <limits.h> 16#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 17#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 18#include <sched.h>
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. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
86 #include <sys/time.h>
87 #include <sys/select.h>
88 #include <unistd.h>
23#include <utime.h> 89 #include <utime.h>
90 #include <signal.h>
24 91
25#if HAVE_SENDFILE 92 #define EIO_STRUCT_STAT Stat_t
26# if __linux 93
27# include <sys/sendfile.h> 94#endif
28# elif __freebsd 95
29# include <sys/socket.h> 96/*****************************************************************************/
30# include <sys/uio.h> 97
31# elif __hpux 98#if __GNUC__ >= 3
32# include <sys/socket.h> 99# define expect(expr,value) __builtin_expect ((expr),(value))
33# elif __solaris /* not yet */ 100#else
34# include <sys/sendfile.h> 101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 SV *sv3, *sv4; \
119 STRLEN stroffset; \
120 SV *self;
121
122#define EIO_NO_WRAPPERS 1
123
124#include "libeio/config.h"
125#include "libeio/eio.h"
126
127static int req_invoke (eio_req *req);
128#define EIO_FINISH(req) req_invoke (req)
129static void req_destroy (eio_req *grp);
130#define EIO_DESTROY(req) req_destroy (req)
131
132#include "libeio/eio.c"
133
134#if !HAVE_POSIX_FADVISE
135# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
136#endif
137
138#if !HAVE_POSIX_MADVISE
139# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
140#endif
141
142#ifndef MAP_ANONYMOUS
143# ifdef MAP_ANON
144# define MAP_ANONYMOUS MAP_ANON
35# else 145# else
36# error sendfile support requested but not available 146# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37# endif 147# endif
38#endif 148#endif
39 149
40/* number of seconds after which idle threads exit */ 150/* defines all sorts of constants to 0 unless they are already defined */
41#define IDLE_TIMEOUT 10 151/* also provides const_iv_ and const_niv_ macros for them */
152#include "def0.h"
42 153
43/* used for struct dirent, AIX doesn't provide it */ 154#ifndef makedev
44#ifndef NAME_MAX 155# define makedev(maj,min) (((maj) << 8) | (min))
45# define NAME_MAX 4096
46#endif 156#endif
47 157#ifndef major
48/* buffer size for various temporary buffers */ 158# define major(dev) ((dev) >> 8)
49#define AIO_BUFSIZE 65536
50
51/* use NV for 32 bit perls as it allows larger offsets */
52#if IVSIZE >= 8
53# define SvVAL64 SvIV
54#else
55# define SvVAL64 SvNV
56#endif 159#endif
160#ifndef minor
161# define minor(dev) ((dev) & 0xff)
162#endif
57 163
58#define dBUF \ 164#if PAGESIZE <= 0
59 char *aio_buf; \ 165# define PAGESIZE sysconf (_SC_PAGESIZE)
60 LOCK (wrklock); \ 166#endif
61 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
62 UNLOCK (wrklock); \
63 if (!aio_buf) \
64 return -1;
65 167
66typedef SV SV8; /* byte-sv, used for argument-checking */ 168/*****************************************************************************/
67 169
68enum { 170static void
69 REQ_QUIT, 171fiemap (eio_req *req)
70 REQ_OPEN, REQ_CLOSE,
71 REQ_READ, REQ_WRITE,
72 REQ_READAHEAD, REQ_SENDFILE,
73 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74 REQ_UTIME, REQ_FUTIME,
75 REQ_CHMOD, REQ_FCHMOD,
76 REQ_CHOWN, REQ_FCHOWN,
77 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79 REQ_MKNOD, REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81 REQ_GROUP, REQ_NOP,
82 REQ_BUSY,
83};
84
85#define AIO_REQ_KLASS "IO::AIO::REQ"
86#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88typedef struct aio_cb
89{ 172{
90 struct aio_cb *volatile next; 173 req->result = -1;
91 174
92 SV *callback; 175#if HAVE_FIEMAP
93 SV *sv1, *sv2; 176 /* assume some c99 */
94 void *ptr1, *ptr2; 177 struct fiemap *fiemap = 0;
95 off_t offs; 178 size_t end_offset;
96 size_t size; 179 int count = req->int3;
97 ssize_t result;
98 double nv1, nv2;
99 180
100 STRLEN stroffset; 181 req->flags |= EIO_FLAG_PTR1_FREE;
101 int type;
102 int int1, int2, int3;
103 int errorno;
104 mode_t mode; /* open */
105 182
106 unsigned char flags; 183 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
107 unsigned char pri; 184 /* increase in 3.5kb steps */
185 if (count < 0)
186 count = 8;
108 187
109 SV *self; /* the perl counterpart of this request, if any */ 188 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 189 errno = ENOMEM;
111} aio_cb; 190 if (!fiemap)
112
113enum {
114 FLAG_CANCELLED = 0x01, /* request was cancelled */
115 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117};
118
119typedef aio_cb *aio_req;
120typedef aio_cb *aio_req_ornot;
121
122enum {
123 PRI_MIN = -4,
124 PRI_MAX = 4,
125
126 DEFAULT_PRI = 0,
127 PRI_BIAS = -PRI_MIN,
128 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129};
130
131#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133static unsigned int max_poll_time = 0;
134static unsigned int max_poll_reqs = 0;
135
136/* calculcate time difference in ~1/AIO_TICKS of a second */
137static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138{
139 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
141}
142
143static thread_t main_tid;
144static int main_sig;
145static int block_sig_level;
146
147void block_sig ()
148{
149 sigset_t ss;
150
151 if (block_sig_level++)
152 return; 191 return;
153 192
154 if (!main_sig) 193 req->ptr1 = fiemap;
194
195 fiemap->fm_start = req->offs;
196 fiemap->fm_length = req->size;
197 fiemap->fm_flags = req->int2;
198 fiemap->fm_extent_count = count;
199
200 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
155 return; 201 return;
156 202
157 sigemptyset (&ss); 203 if (req->int3 >= 0 /* not autosizing */
158 sigaddset (&ss, main_sig); 204 || !fiemap->fm_mapped_extents /* no more extents */
159 pthread_sigmask (SIG_BLOCK, &ss, 0); 205 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160} 206 goto done;
161 207
162void unblock_sig () 208 /* else we have to loop -
163{ 209 * it would be tempting (actually I tried that first) to just query the
164 sigset_t ss; 210 * number of extents needed, but linux often feels like not returning all
211 * extents, without telling us it left any out. this complicates
212 * this quite a bit.
213 */
165 214
166 if (--block_sig_level) 215 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167 return;
168 216
169 if (!main_sig) 217 for (;;)
170 return;
171
172 sigemptyset (&ss);
173 sigaddset (&ss, main_sig);
174 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175}
176
177static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179static unsigned int started, idle, wanted;
180
181/* worker threads management */
182static mutex_t wrklock = MUTEX_INIT;
183
184typedef struct worker {
185 /* locked by wrklock */
186 struct worker *prev, *next;
187
188 thread_t tid;
189
190 /* locked by reslock, reqlock or wrklock */
191 aio_req req; /* currently processed request */
192 void *dbuf;
193 DIR *dirp;
194} worker;
195
196static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198static void worker_clear (worker *wrk)
199{
200 if (wrk->dirp)
201 { 218 {
202 closedir (wrk->dirp); 219 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
203 wrk->dirp = 0; 220 char scratch[3072];
204 } 221 struct fiemap *incmap = (struct fiemap *)scratch;
205 222
206 if (wrk->dbuf) 223 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207 { 224 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208 free (wrk->dbuf); 225 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209 wrk->dbuf = 0; 226 incmap->fm_flags = fiemap->fm_flags;
210 } 227 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211}
212 228
213static void worker_free (worker *wrk) 229 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
214{
215 wrk->next->prev = wrk->prev;
216 wrk->prev->next = wrk->next;
217
218 free (wrk);
219}
220
221static volatile unsigned int nreqs, nready, npending;
222static volatile unsigned int max_idle = 4;
223static volatile unsigned int max_outstanding = 0xffffffff;
224static int respipe [2];
225
226static mutex_t reslock = MUTEX_INIT;
227static mutex_t reqlock = MUTEX_INIT;
228static cond_t reqwait = COND_INIT;
229
230#if WORDACCESS_UNSAFE
231
232static unsigned int get_nready ()
233{
234 unsigned int retval;
235
236 LOCK (reqlock);
237 retval = nready;
238 UNLOCK (reqlock);
239
240 return retval;
241}
242
243static unsigned int get_npending ()
244{
245 unsigned int retval;
246
247 LOCK (reslock);
248 retval = npending;
249 UNLOCK (reslock);
250
251 return retval;
252}
253
254static unsigned int get_nthreads ()
255{
256 unsigned int retval;
257
258 LOCK (wrklock);
259 retval = started;
260 UNLOCK (wrklock);
261
262 return retval;
263}
264
265#else
266
267# define get_nready() nready
268# define get_npending() npending
269# define get_nthreads() started
270
271#endif
272
273/*
274 * a somewhat faster data structure might be nice, but
275 * with 8 priorities this actually needs <20 insns
276 * per shift, the most expensive operation.
277 */
278typedef struct {
279 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280 int size;
281} reqq;
282
283static reqq req_queue;
284static reqq res_queue;
285
286int reqq_push (reqq *q, aio_req req)
287{
288 int pri = req->pri;
289 req->next = 0;
290
291 if (q->qe[pri])
292 {
293 q->qe[pri]->next = req;
294 q->qe[pri] = req;
295 }
296 else
297 q->qe[pri] = q->qs[pri] = req;
298
299 return q->size++;
300}
301
302aio_req reqq_shift (reqq *q)
303{
304 int pri;
305
306 if (!q->size)
307 return 0; 230 return;
308 231
309 --q->size; 232 if (!incmap->fm_mapped_extents)
233 goto done;
310 234
311 for (pri = NUM_PRI; pri--; ) 235 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312 { 236 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313 aio_req req = q->qs[pri]; 237 errno = ENOMEM;
314
315 if (req) 238 if (!fiemap)
239 return;
240
241 req->ptr1 = fiemap;
242
243 for (count = 0; count < incmap->fm_mapped_extents; ++count)
316 { 244 {
317 if (!(q->qs[pri] = req->next)) 245 struct fiemap_extent *e = incmap->fm_extents + count;
318 q->qe[pri] = 0;
319 246
320 return req; 247 if (e->fe_logical + e->fe_length >= end_offset)
248 goto done;
249
250 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
251
252 if (e->fe_flags & FIEMAP_EXTENT_LAST)
253 goto done;
254
321 } 255 }
322 } 256 }
323 257
324 abort (); 258done:
325} 259 req->result = 0;
326 260
327static int poll_cb (); 261#else
328static int req_invoke (aio_req req); 262 errno = ENOSYS;
263#endif
264}
265
266/*****************************************************************************/
267
268enum {
269 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
270};
271
272typedef eio_req *aio_req;
273typedef eio_req *aio_req_ornot;
274typedef eio_wd aio_wd;
275
276static SV *on_next_submit;
277static int next_pri = EIO_PRI_DEFAULT;
278static int max_outstanding;
279
280static s_epipe respipe;
281
329static void req_destroy (aio_req req); 282static void req_destroy (aio_req req);
330static void req_cancel (aio_req req); 283static void req_cancel (aio_req req);
331 284
285static void
286want_poll (void)
287{
288 /* write a dummy byte to the pipe so fh becomes ready */
289 s_epipe_signal (&respipe);
290}
291
292static void
293done_poll (void)
294{
295 /* read any signals sent by the worker threads */
296 s_epipe_drain (&respipe);
297}
298
332/* must be called at most once */ 299/* must be called at most once */
333static SV *req_sv (aio_req req, const char *klass) 300static SV *
301req_sv (aio_req req, HV *stash)
334{ 302{
335 if (!req->self) 303 if (!req->self)
336 { 304 {
337 req->self = (SV *)newHV (); 305 req->self = (SV *)newHV ();
338 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 306 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339 } 307 }
340 308
341 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 309 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342} 310}
343 311
344static aio_req SvAIO_REQ (SV *sv) 312static SV *
313newSVaio_wd (aio_wd wd)
314{
315 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
316}
317
318static aio_req
319SvAIO_REQ (SV *sv)
345{ 320{
346 MAGIC *mg; 321 MAGIC *mg;
347 322
348 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 323 if (!SvROK (sv)
324 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
325 || (SvSTASH (SvRV (sv)) != aio_grp_stash
326 && SvSTASH (SvRV (sv)) != aio_req_stash
327 && !sv_derived_from (sv, "IO::AIO::REQ")))
349 croak ("object of class " AIO_REQ_KLASS " expected"); 328 croak ("object of class IO::AIO::REQ expected");
350 329
351 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 330 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352 331
353 return mg ? (aio_req)mg->mg_ptr : 0; 332 return mg ? (aio_req)mg->mg_ptr : 0;
354} 333}
355 334
335static aio_wd
336SvAIO_WD (SV *sv)
337{
338 if (!SvROK (sv)
339 || SvTYPE (SvRV (sv)) != SVt_PVMG
340 || SvSTASH (SvRV (sv)) != aio_wd_stash)
341 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
342
343 return (aio_wd)(long)SvIVX (SvRV (sv));
344}
345
346static SV *
347newmortalFH (int fd, int flags)
348{
349 if (fd < 0)
350 return &PL_sv_undef;
351
352 GV *gv = (GV *)sv_newmortal ();
353 char sym[64];
354 int symlen;
355
356 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
357 gv_init (gv, aio_stash, sym, symlen, 0);
358
359 symlen = snprintf (
360 sym,
361 sizeof (sym),
362 "%s&=%d",
363 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
364 fd
365 );
366
367 return do_open (gv, sym, symlen, 0, 0, 0, 0)
368 ? (SV *)gv : &PL_sv_undef;
369}
370
371static void
356static void aio_grp_feed (aio_req grp) 372aio_grp_feed (aio_req grp)
357{ 373{
358 block_sig (); 374 if (grp->sv2 && SvOK (grp->sv2))
359
360 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361 { 375 {
362 int old_len = grp->size;
363
364 if (grp->sv2 && SvOK (grp->sv2))
365 {
366 dSP; 376 dSP;
367 377
368 ENTER; 378 ENTER;
369 SAVETMPS; 379 SAVETMPS;
370 PUSHMARK (SP); 380 PUSHMARK (SP);
371 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 381 XPUSHs (req_sv (grp, aio_grp_stash));
372 PUTBACK; 382 PUTBACK;
373 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 383 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374 SPAGAIN; 384 SPAGAIN;
375 FREETMPS; 385 FREETMPS;
376 LEAVE; 386 LEAVE;
377 }
378
379 /* stop if no progress has been made */
380 if (old_len == grp->size)
381 {
382 SvREFCNT_dec (grp->sv2);
383 grp->sv2 = 0;
384 break;
385 }
386 } 387 }
387
388 unblock_sig ();
389} 388}
390 389
391static void aio_grp_dec (aio_req grp) 390static void
391req_submit (eio_req *req)
392{ 392{
393 --grp->size; 393 eio_submit (req);
394 394
395 /* call feeder, if applicable */ 395 if (expect_false (on_next_submit))
396 aio_grp_feed (grp);
397
398 /* finish, if done */
399 if (!grp->size && grp->int1)
400 { 396 {
401 block_sig (); 397 dSP;
398 SV *cb = sv_2mortal (on_next_submit);
402 399
403 if (!req_invoke (grp)) 400 on_next_submit = 0;
404 {
405 req_destroy (grp);
406 unblock_sig ();
407 croak (0);
408 }
409 401
410 req_destroy (grp); 402 PUSHMARK (SP);
411 unblock_sig (); 403 PUTBACK;
404 call_sv (cb, G_DISCARD | G_EVAL);
412 } 405 }
413} 406}
414 407
408static int
415static int req_invoke (aio_req req) 409req_invoke (eio_req *req)
416{ 410{
417 dSP;
418
419 if (req->flags & FLAG_SV2_RO_OFF) 411 if (req->flags & FLAG_SV2_RO_OFF)
420 SvREADONLY_off (req->sv2); 412 SvREADONLY_off (req->sv2);
421 413
422 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 414 if (!EIO_CANCELLED (req) && req->callback)
423 { 415 {
416 dSP;
417 static SV *sv_result_cache; /* caches the result integer SV */
418 SV *sv_result;
419
424 ENTER; 420 ENTER;
425 SAVETMPS; 421 SAVETMPS;
426 PUSHMARK (SP); 422 PUSHMARK (SP);
427 EXTEND (SP, 1); 423 EXTEND (SP, 1);
428 424
425 /* do not recreate the result IV from scratch each time */
426 if (expect_true (sv_result_cache))
427 {
428 sv_result = sv_result_cache; sv_result_cache = 0;
429 SvIV_set (sv_result, req->result);
430 SvIOK_only (sv_result);
431 }
432 else
433 {
434 sv_result = newSViv (req->result);
435 SvREADONLY_on (sv_result);
436 }
437
429 switch (req->type) 438 switch (req->type)
430 { 439 {
440 case EIO_WD_OPEN:
441 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
442 break;
443
431 case REQ_READDIR: 444 case EIO_READDIR:
432 { 445 {
433 SV *rv = &PL_sv_undef; 446 SV *rv = &PL_sv_undef;
434 447
435 if (req->result >= 0) 448 if (req->result >= 0)
436 { 449 {
437 int i; 450 int i;
438 char *buf = req->ptr2; 451 char *names = (char *)req->ptr2;
452 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439 AV *av = newAV (); 453 AV *av = newAV ();
440 454
441 av_extend (av, req->result - 1); 455 av_extend (av, req->result - 1);
442 456
443 for (i = 0; i < req->result; ++i) 457 for (i = 0; i < req->result; ++i)
444 { 458 {
445 SV *sv = newSVpv (buf, 0); 459 if (req->int1 & EIO_READDIR_DENTS)
460 {
461 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446 462
463 if (req->int1 & EIO_READDIR_CUSTOM2)
464 {
465 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
466 AV *avent = newAV ();
467
468 av_extend (avent, 2);
469
470 if (!sv_type [ent->type])
471 {
472 sv_type [ent->type] = newSViv (ent->type);
473 SvREADONLY_on (sv_type [ent->type]);
474 }
475
476 av_store (avent, 0, namesv);
477 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
478 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
479
480 av_store (av, i, newRV_noinc ((SV *)avent));
481 }
482 else
447 av_store (av, i, sv); 483 av_store (av, i, namesv);
484
485 ++ent;
486 }
487 else
488 {
489 SV *name = newSVpv (names, 0);
490 av_store (av, i, name);
448 buf += SvCUR (sv) + 1; 491 names += SvCUR (name) + 1;
492 }
449 } 493 }
450 494
451 rv = sv_2mortal (newRV_noinc ((SV *)av)); 495 rv = sv_2mortal (newRV_noinc ((SV *)av));
452 } 496 }
453 497
454 PUSHs (rv); 498 PUSHs (rv);
499
500 if (req->int1 & EIO_READDIR_CUSTOM1)
501 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455 } 502 }
456 break; 503 break;
457 504
458 case REQ_OPEN: 505 case EIO_OPEN:
506 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
507 break;
508
509 case EIO_STATVFS:
510 case EIO_FSTATVFS:
459 { 511 {
460 /* convert fd to fh */ 512 SV *rv = &PL_sv_undef;
461 SV *fh; 513
514#ifndef _WIN32
515 if (req->result >= 0)
516 {
517 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
518 HV *hv = newHV ();
519 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
520 * chooses to make it a struct.
521 */
522 unsigned long fsid = 0;
523 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
462 524
463 PUSHs (sv_2mortal (newSViv (req->result))); 525 rv = sv_2mortal (newRV_noinc ((SV *)hv));
464 PUTBACK;
465 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466 SPAGAIN;
467 526
468 fh = POPs; 527 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469 PUSHMARK (SP); 528 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
529 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
530 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
531 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
532 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
533 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
534 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
535 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
536 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
537 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
538 }
539#endif
540
470 XPUSHs (fh); 541 PUSHs (rv);
471 } 542 }
543
472 break; 544 break;
473 545
474 case REQ_GROUP: 546 case EIO_GROUP:
475 req->int1 = 2; /* mark group as finished */ 547 req->int1 = 2; /* mark group as finished */
476 548
477 if (req->sv1) 549 if (req->sv1)
478 { 550 {
479 int i; 551 int i;
… …
483 for (i = 0; i <= AvFILL (av); ++i) 555 for (i = 0; i <= AvFILL (av); ++i)
484 PUSHs (*av_fetch (av, i, 0)); 556 PUSHs (*av_fetch (av, i, 0));
485 } 557 }
486 break; 558 break;
487 559
488 case REQ_NOP: 560 case EIO_NOP:
489 case REQ_BUSY: 561 case EIO_BUSY:
490 break; 562 break;
491 563
492 case REQ_READLINK: 564 case EIO_READLINK:
565 case EIO_REALPATH:
493 if (req->result > 0) 566 if (req->result > 0)
567 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
568 break;
569
570 case EIO_STAT:
571 case EIO_LSTAT:
572 case EIO_FSTAT:
573 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
574
575 if (!(PL_laststatval = req->result))
576 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
577 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
578
579 PUSHs (sv_result);
580 break;
581
582 case EIO_SEEK:
583 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
584 break;
585
586 case EIO_READ:
587 {
588 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
589 *SvEND (req->sv2) = 0;
590 SvPOK_only (req->sv2);
591 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result);
593 }
594 break;
595
596 case EIO_CUSTOM:
597 if (req->feed == fiemap)
494 { 598 {
495 SvCUR_set (req->sv2, req->result); 599#if HAVE_FIEMAP
496 *SvEND (req->sv2) = 0;
497 PUSHs (req->sv2); 600 if (!req->result)
601 {
602 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
603
604 if (fiemap->fm_extent_count)
605 {
606 AV *av = newAV ();
607 int i;
608
609 while (fiemap->fm_mapped_extents)
610 {
611 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
612 AV *ext_av = newAV ();
613
614 av_store (ext_av, 3, newSVuv (extent->fe_flags));
615 av_store (ext_av, 2, newSVval64 (extent->fe_length));
616 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
617 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
618
619 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
620 }
621
622 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
623 }
624 else
625 {
626 SvIV_set (sv_result, fiemap->fm_mapped_extents);
627 PUSHs (sv_result);
628 }
629 }
630#endif
498 } 631 }
632 else
633 PUSHs (sv_result);
499 break; 634 break;
500 635
501 case REQ_STAT: 636 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502 case REQ_LSTAT: 637 if (req->result > 0)
503 case REQ_FSTAT: 638 SvIV_set (sv_result, 0);
504 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 639 /* FALLTHROUGH */
505 PL_laststatval = req->result;
506 PL_statcache = *(Stat_t *)(req->ptr2);
507 PUSHs (sv_2mortal (newSViv (req->result)));
508 break;
509
510 case REQ_READ:
511 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512 *SvEND (req->sv2) = 0;
513 PUSHs (sv_2mortal (newSViv (req->result)));
514 break;
515 640
516 default: 641 default:
517 PUSHs (sv_2mortal (newSViv (req->result))); 642 PUSHs (sv_result);
518 break; 643 break;
519 } 644 }
520 645
521 errno = req->errorno; 646 errno = req->errorno;
522 647
523 PUTBACK; 648 PUTBACK;
524 call_sv (req->callback, G_VOID | G_EVAL); 649 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525 SPAGAIN; 650 SPAGAIN;
651
652 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
653 SvREFCNT_dec (sv_result);
654 else
655 sv_result_cache = sv_result;
526 656
527 FREETMPS; 657 FREETMPS;
528 LEAVE; 658 LEAVE;
659
660 PUTBACK;
529 } 661 }
530 662
531 if (req->grp)
532 {
533 aio_req grp = req->grp;
534
535 /* unlink request */
536 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539 if (grp->grp_first == req)
540 grp->grp_first = req->grp_next;
541
542 aio_grp_dec (grp);
543 }
544
545 return !SvTRUE (ERRSV); 663 return !!SvTRUE (ERRSV);
546} 664}
547 665
666static void
548static void req_destroy (aio_req req) 667req_destroy (aio_req req)
549{ 668{
550 if (req->self) 669 if (req->self)
551 { 670 {
552 sv_unmagic (req->self, PERL_MAGIC_ext); 671 sv_unmagic (req->self, PERL_MAGIC_ext);
553 SvREFCNT_dec (req->self); 672 SvREFCNT_dec (req->self);
554 } 673 }
555 674
556 SvREFCNT_dec (req->sv1); 675 SvREFCNT_dec (req->sv1);
557 SvREFCNT_dec (req->sv2); 676 SvREFCNT_dec (req->sv2);
677 SvREFCNT_dec (req->sv3);
678 SvREFCNT_dec (req->sv4);
558 SvREFCNT_dec (req->callback); 679 SvREFCNT_dec (req->callback);
559 680
560 if (req->flags & FLAG_PTR2_FREE)
561 free (req->ptr2);
562
563 Safefree (req); 681 free (req);
564} 682}
565 683
684static void
566static void req_cancel_subs (aio_req grp) 685req_cancel_subs (aio_req grp)
567{ 686{
568 aio_req sub;
569
570 if (grp->type != REQ_GROUP) 687 if (grp->type != EIO_GROUP)
571 return; 688 return;
572 689
573 SvREFCNT_dec (grp->sv2); 690 SvREFCNT_dec (grp->sv2);
574 grp->sv2 = 0; 691 grp->sv2 = 0;
575 692
576 for (sub = grp->grp_first; sub; sub = sub->grp_next) 693 eio_grp_cancel (grp);
577 req_cancel (sub);
578} 694}
579 695
580static void req_cancel (aio_req req) 696static void ecb_cold
697create_respipe (void)
581{ 698{
582 req->flags |= FLAG_CANCELLED; 699 if (s_epipe_renew (&respipe))
583 700 croak ("IO::AIO: unable to initialize result pipe");
584 req_cancel_subs (req);
585} 701}
586 702
587static void *aio_proc (void *arg); 703static void
588 704poll_wait (void)
589static void start_thread (void)
590{ 705{
591 worker *wrk = calloc (1, sizeof (worker));
592
593 if (!wrk)
594 croak ("unable to allocate worker thread data");
595
596 LOCK (wrklock);
597
598 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599 {
600 wrk->prev = &wrk_first;
601 wrk->next = wrk_first.next;
602 wrk_first.next->prev = wrk;
603 wrk_first.next = wrk;
604 ++started;
605 }
606 else
607 free (wrk);
608
609 UNLOCK (wrklock);
610}
611
612static void maybe_start_thread ()
613{
614 if (get_nthreads () >= wanted)
615 return;
616
617 /* todo: maybe use idle here, but might be less exact */
618 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619 return;
620
621 start_thread ();
622}
623
624static void req_send (aio_req req)
625{
626 block_sig ();
627
628 ++nreqs;
629
630 LOCK (reqlock);
631 ++nready;
632 reqq_push (&req_queue, req);
633 COND_SIGNAL (reqwait);
634 UNLOCK (reqlock);
635
636 unblock_sig ();
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 COND_SIGNAL (reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 706 while (eio_nreqs ())
687 { 707 {
688 int size; 708 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 709
710 X_LOCK (EIO_POOL->reslock);
690 size = res_queue.size; 711 size = EIO_POOL->res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 712 X_UNLOCK (EIO_POOL->reslock);
692 713
693 if (size) 714 if (size)
694 return; 715 return;
695 716
696 maybe_start_thread (); 717 etp_maybe_start_thread (EIO_POOL);
697 718
698 FD_ZERO(&rfd); 719 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 720 }
703} 721}
704 722
705static int poll_cb () 723static int
724poll_cb (void)
706{ 725{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 block_sig ();
718
719 for (;;) 726 for (;;)
720 { 727 {
721 for (;;) 728 int res = eio_poll ();
729
730 if (res > 0)
731 croak (0);
732
733 if (!max_outstanding || max_outstanding > eio_nreqs ())
734 return res;
735
736 poll_wait ();
737 }
738}
739
740static void ecb_cold
741reinit (void)
742{
743 create_respipe ();
744
745 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library");
747}
748
749/*****************************************************************************/
750
751#if !_POSIX_MAPPED_FILES
752# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753# define munmap(addr,length) EIO_ENOSYS ()
754#endif
755
756#if !_POSIX_MEMORY_PROTECTION
757# define mprotect(addr,len,prot) EIO_ENOSYS ()
758#endif
759
760#define MMAP_MAGIC PERL_MAGIC_ext
761
762static int ecb_cold
763mmap_free (pTHX_ SV *sv, MAGIC *mg)
764{
765 int old_errno = errno;
766 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
767 errno = old_errno;
768
769 mg->mg_obj = 0; /* just in case */
770
771 SvREADONLY_off (sv);
772
773 if (SvPVX (sv) != mg->mg_ptr)
774 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
775
776 SvCUR_set (sv, 0);
777 SvPVX (sv) = 0;
778 SvOK_off (sv);
779
780 return 0;
781}
782
783static MGVTBL mmap_vtbl = {
784 0, 0, 0, 0, mmap_free
785};
786
787/*****************************************************************************/
788
789static SV *
790get_cb (SV *cb_sv)
791{
792 SvGETMAGIC (cb_sv);
793 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
794}
795
796static aio_req ecb_noinline
797dreq (SV *callback)
798{
799 SV *cb_cv;
800 aio_req req;
801 int req_pri = next_pri;
802 next_pri = EIO_PRI_DEFAULT;
803
804 cb_cv = get_cb (callback);
805
806 req = calloc (sizeof (*req), 1);
807 if (!req)
808 croak ("out of memory during eio_req allocation");
809
810 req->callback = SvREFCNT_inc (cb_cv);
811 req->pri = req_pri;
812
813 return req;
814}
815
816#define dREQ \
817 aio_req req = dreq (callback); \
818
819#define REQ_SEND \
820 PUTBACK; \
821 req_submit (req); \
822 SPAGAIN; \
823 \
824 if (GIMME_V != G_VOID) \
825 XPUSHs (req_sv (req, aio_req_stash));
826
827ecb_inline void
828req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
829{
830 if (expect_false (SvROK (path)))
831 {
832 SV *rv = SvRV (path);
833 SV *wdob;
834
835 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722 { 836 {
723 maybe_start_thread (); 837 path = AvARRAY (rv)[1];
838 wdob = AvARRAY (rv)[0];
724 839
725 LOCK (reslock); 840 if (SvOK (wdob))
726 req = reqq_shift (&res_queue);
727
728 if (req)
729 { 841 {
730 --npending; 842 *wd = SvAIO_WD (wdob);
731 843 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
732 if (!res_queue.size)
733 {
734 /* read any signals sent by the worker threads */
735 char buf [4];
736 while (read (respipe [0], buf, 4) == 4)
737 ;
738 }
739 }
740
741 UNLOCK (reslock);
742
743 if (!req)
744 break;
745
746 --nreqs;
747
748 if (req->type == REQ_GROUP && req->size)
749 {
750 req->int1 = 1; /* mark request as delayed */
751 continue;
752 } 844 }
753 else 845 else
754 { 846 *wd = EIO_INVALID_WD;
755 if (!req_invoke (req))
756 {
757 req_destroy (req);
758 unblock_sig ();
759 croak (0);
760 }
761
762 count++;
763 }
764
765 req_destroy (req);
766
767 if (maxreqs && !--maxreqs)
768 break;
769
770 if (max_poll_time)
771 {
772 gettimeofday (&tv_now, 0);
773
774 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775 break;
776 }
777 } 847 }
848 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
849 {
850 *wd = (aio_wd)(long)SvIVX (rv);
851 *wdsv = SvREFCNT_inc_NN (rv);
852 *ptr = ".";
853 return; /* path set to "." */
854 }
855 else
856 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
857 }
778 858
779 if (nreqs <= max_outstanding) 859 *pathsv = newSVsv (path);
860 *ptr = SvPVbyte_nolen (*pathsv);
861}
862
863static void ecb_noinline
864req_set_path1 (aio_req req, SV *path)
865{
866 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
867}
868
869static void ecb_noinline
870req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
871{
872 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
873
874 switch (SvTYPE (rv))
875 {
876 case SVt_PVIO:
877 case SVt_PVLV:
878 case SVt_PVGV:
879 req->type = type_fh;
880 req->sv1 = newSVsv (fh_or_path);
881 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780 break; 882 break;
781 883
782 poll_wait (); 884 default:
783 885 req->type = type_path;
784 ++maxreqs; 886 req_set_path1 (req, fh_or_path);
887 break;
785 } 888 }
786
787 unblock_sig ();
788 return count;
789} 889}
790 890
791static void create_pipe () 891XS(boot_IO__AIO) ecb_cold;
792{
793 if (pipe (respipe))
794 croak ("unable to initialize result pipe");
795 892
796 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797 croak ("cannot set result pipe to nonblocking mode");
798
799 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800 croak ("cannot set result pipe to nonblocking mode");
801}
802
803/*****************************************************************************/
804/* work around various missing functions */
805
806#if !HAVE_PREADWRITE
807# define pread aio_pread
808# define pwrite aio_pwrite
809
810/*
811 * make our pread/pwrite safe against themselves, but not against
812 * normal read/write by using a mutex. slows down execution a lot,
813 * but that's your problem, not mine.
814 */
815static mutex_t preadwritelock = MUTEX_INIT;
816
817static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818{
819 ssize_t res;
820 off_t ooffset;
821
822 LOCK (preadwritelock);
823 ooffset = lseek (fd, 0, SEEK_CUR);
824 lseek (fd, offset, SEEK_SET);
825 res = read (fd, buf, count);
826 lseek (fd, ooffset, SEEK_SET);
827 UNLOCK (preadwritelock);
828
829 return res;
830}
831
832static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833{
834 ssize_t res;
835 off_t ooffset;
836
837 LOCK (preadwritelock);
838 ooffset = lseek (fd, 0, SEEK_CUR);
839 lseek (fd, offset, SEEK_SET);
840 res = write (fd, buf, count);
841 lseek (fd, offset, SEEK_SET);
842 UNLOCK (preadwritelock);
843
844 return res;
845}
846#endif
847
848#ifndef HAVE_FUTIMES
849
850# define utimes(path,times) aio_utimes (path, times)
851# define futimes(fd,times) aio_futimes (fd, times)
852
853int aio_utimes (const char *filename, const struct timeval times[2])
854{
855 if (times)
856 {
857 struct utimbuf buf;
858
859 buf.actime = times[0].tv_sec;
860 buf.modtime = times[1].tv_sec;
861
862 return utime (filename, &buf);
863 }
864 else
865 return utime (filename, 0);
866}
867
868int aio_futimes (int fd, const struct timeval tv[2])
869{
870 errno = ENOSYS;
871 return -1;
872}
873
874#endif
875
876#if !HAVE_FDATASYNC
877# define fdatasync fsync
878#endif
879
880#if !HAVE_READAHEAD
881# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884{
885 dBUF;
886
887 while (count > 0)
888 {
889 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891 pread (fd, aio_buf, len, offset);
892 offset += len;
893 count -= len;
894 }
895
896 errno = 0;
897}
898
899#endif
900
901#if !HAVE_READDIR_R
902# define readdir_r aio_readdir_r
903
904static mutex_t readdirlock = MUTEX_INIT;
905
906static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907{
908 struct dirent *e;
909 int errorno;
910
911 LOCK (readdirlock);
912
913 e = readdir (dirp);
914 errorno = errno;
915
916 if (e)
917 {
918 *res = ent;
919 strcpy (ent->d_name, e->d_name);
920 }
921 else
922 *res = 0;
923
924 UNLOCK (readdirlock);
925
926 errno = errorno;
927 return e ? 0 : -1;
928}
929#endif
930
931/* sendfile always needs emulation */
932static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933{
934 ssize_t res;
935
936 if (!count)
937 return 0;
938
939#if HAVE_SENDFILE
940# if __linux
941 res = sendfile (ofd, ifd, &offset, count);
942
943# elif __freebsd
944 /*
945 * Of course, the freebsd sendfile is a dire hack with no thoughts
946 * wasted on making it similar to other I/O functions.
947 */
948 {
949 off_t sbytes;
950 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952 if (res < 0 && sbytes)
953 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954 res = sbytes;
955 }
956
957# elif __hpux
958 res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960# elif __solaris
961 {
962 struct sendfilevec vec;
963 size_t sbytes;
964
965 vec.sfv_fd = ifd;
966 vec.sfv_flag = 0;
967 vec.sfv_off = offset;
968 vec.sfv_len = count;
969
970 res = sendfilev (ofd, &vec, 1, &sbytes);
971
972 if (res < 0 && sbytes)
973 res = sbytes;
974 }
975
976# endif
977#else
978 res = -1;
979 errno = ENOSYS;
980#endif
981
982 if (res < 0
983 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984#if __solaris
985 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
986#endif
987 )
988 )
989 {
990 /* emulate sendfile. this is a major pain in the ass */
991 dBUF;
992
993 res = 0;
994
995 while (count)
996 {
997 ssize_t cnt;
998
999 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001 if (cnt <= 0)
1002 {
1003 if (cnt && !res) res = -1;
1004 break;
1005 }
1006
1007 cnt = write (ofd, aio_buf, cnt);
1008
1009 if (cnt <= 0)
1010 {
1011 if (cnt && !res) res = -1;
1012 break;
1013 }
1014
1015 offset += cnt;
1016 res += cnt;
1017 count -= cnt;
1018 }
1019 }
1020
1021 return res;
1022}
1023
1024/* read a full directory */
1025static void scandir_ (aio_req req, worker *self)
1026{
1027 DIR *dirp;
1028 union
1029 {
1030 struct dirent d;
1031 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032 } *u;
1033 struct dirent *entp;
1034 char *name, *names;
1035 int memlen = 4096;
1036 int memofs = 0;
1037 int res = 0;
1038 int errorno;
1039
1040 LOCK (wrklock);
1041 self->dirp = dirp = opendir (req->ptr1);
1042 self->dbuf = u = malloc (sizeof (*u));
1043 req->flags |= FLAG_PTR2_FREE;
1044 req->ptr2 = names = malloc (memlen);
1045 UNLOCK (wrklock);
1046
1047 if (dirp && u && names)
1048 for (;;)
1049 {
1050 errno = 0;
1051 readdir_r (dirp, &u->d, &entp);
1052
1053 if (!entp)
1054 break;
1055
1056 name = entp->d_name;
1057
1058 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059 {
1060 int len = strlen (name) + 1;
1061
1062 res++;
1063
1064 while (memofs + len > memlen)
1065 {
1066 memlen *= 2;
1067 LOCK (wrklock);
1068 req->ptr2 = names = realloc (names, memlen);
1069 UNLOCK (wrklock);
1070
1071 if (!names)
1072 break;
1073 }
1074
1075 memcpy (names + memofs, name, len);
1076 memofs += len;
1077 }
1078 }
1079
1080 if (errno)
1081 res = -1;
1082
1083 req->result = res;
1084}
1085
1086/*****************************************************************************/
1087
1088static void *aio_proc (void *thr_arg)
1089{
1090 aio_req req;
1091 struct timespec ts;
1092 worker *self = (worker *)thr_arg;
1093
1094 /* try to distribute timeouts somewhat evenly */
1095 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096 * (1000000000UL / 1024UL);
1097
1098 for (;;)
1099 {
1100 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102 LOCK (reqlock);
1103
1104 for (;;)
1105 {
1106 self->req = req = reqq_shift (&req_queue);
1107
1108 if (req)
1109 break;
1110
1111 ++idle;
1112
1113 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114 == ETIMEDOUT)
1115 {
1116 if (idle > max_idle)
1117 {
1118 --idle;
1119 UNLOCK (reqlock);
1120 LOCK (wrklock);
1121 --started;
1122 UNLOCK (wrklock);
1123 goto quit;
1124 }
1125
1126 /* we are allowed to idle, so do so without any timeout */
1127 COND_WAIT (reqwait, reqlock);
1128 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129 }
1130
1131 --idle;
1132 }
1133
1134 --nready;
1135
1136 UNLOCK (reqlock);
1137
1138 errno = 0; /* strictly unnecessary */
1139
1140 if (!(req->flags & FLAG_CANCELLED))
1141 switch (req->type)
1142 {
1143 case REQ_READ: req->result = req->offs >= 0
1144 ? pread (req->int1, req->ptr1, req->size, req->offs)
1145 : read (req->int1, req->ptr1, req->size); break;
1146 case REQ_WRITE: req->result = req->offs >= 0
1147 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148 : write (req->int1, req->ptr1, req->size); break;
1149
1150 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163 case REQ_CLOSE: req->result = close (req->int1); break;
1164 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174 case REQ_FSYNC: req->result = fsync (req->int1); break;
1175 case REQ_READDIR: scandir_ (req, self); break;
1176
1177 case REQ_BUSY:
1178 {
1179 struct timeval tv;
1180
1181 tv.tv_sec = req->nv1;
1182 tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184 req->result = select (0, 0, 0, 0, &tv);
1185 }
1186
1187 case REQ_UTIME:
1188 case REQ_FUTIME:
1189 {
1190 struct timeval tv[2];
1191 struct timeval *times;
1192
1193 if (req->nv1 != -1. || req->nv2 != -1.)
1194 {
1195 tv[0].tv_sec = req->nv1;
1196 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197 tv[1].tv_sec = req->nv2;
1198 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200 times = tv;
1201 }
1202 else
1203 times = 0;
1204
1205
1206 req->result = req->type == REQ_FUTIME
1207 ? futimes (req->int1, times)
1208 : utimes (req->ptr1, times);
1209 }
1210
1211 case REQ_GROUP:
1212 case REQ_NOP:
1213 break;
1214
1215 case REQ_QUIT:
1216 goto quit;
1217
1218 default:
1219 req->result = -1;
1220 break;
1221 }
1222
1223 req->errorno = errno;
1224
1225 LOCK (reslock);
1226
1227 ++npending;
1228
1229 if (!reqq_push (&res_queue, req))
1230 {
1231 /* write a dummy byte to the pipe so fh becomes ready */
1232 write (respipe [1], &respipe, 1);
1233
1234 /* optionally signal the main thread asynchronously */
1235 if (main_sig)
1236 pthread_kill (main_tid, main_sig);
1237 }
1238
1239 self->req = 0;
1240 worker_clear (self);
1241
1242 UNLOCK (reslock);
1243 }
1244
1245quit:
1246 LOCK (wrklock);
1247 worker_free (self);
1248 UNLOCK (wrklock);
1249
1250 return 0;
1251}
1252
1253/*****************************************************************************/
1254
1255static void atfork_prepare (void)
1256{
1257 LOCK (wrklock);
1258 LOCK (reqlock);
1259 LOCK (reslock);
1260#if !HAVE_PREADWRITE
1261 LOCK (preadwritelock);
1262#endif
1263#if !HAVE_READDIR_R
1264 LOCK (readdirlock);
1265#endif
1266}
1267
1268static void atfork_parent (void)
1269{
1270#if !HAVE_READDIR_R
1271 UNLOCK (readdirlock);
1272#endif
1273#if !HAVE_PREADWRITE
1274 UNLOCK (preadwritelock);
1275#endif
1276 UNLOCK (reslock);
1277 UNLOCK (reqlock);
1278 UNLOCK (wrklock);
1279}
1280
1281static void atfork_child (void)
1282{
1283 aio_req prv;
1284
1285 while (prv = reqq_shift (&req_queue))
1286 req_destroy (prv);
1287
1288 while (prv = reqq_shift (&res_queue))
1289 req_destroy (prv);
1290
1291 while (wrk_first.next != &wrk_first)
1292 {
1293 worker *wrk = wrk_first.next;
1294
1295 if (wrk->req)
1296 req_destroy (wrk->req);
1297
1298 worker_clear (wrk);
1299 worker_free (wrk);
1300 }
1301
1302 started = 0;
1303 idle = 0;
1304 nreqs = 0;
1305 nready = 0;
1306 npending = 0;
1307
1308 close (respipe [0]);
1309 close (respipe [1]);
1310 create_pipe ();
1311
1312 atfork_parent ();
1313}
1314
1315#define dREQ \
1316 aio_req req; \
1317 int req_pri = next_pri; \
1318 next_pri = DEFAULT_PRI + PRI_BIAS; \
1319 \
1320 if (SvOK (callback) && !SvROK (callback)) \
1321 croak ("callback must be undef or of reference type"); \
1322 \
1323 Newz (0, req, 1, aio_cb); \
1324 if (!req) \
1325 croak ("out of memory during aio_req allocation"); \
1326 \
1327 req->callback = newSVsv (callback); \
1328 req->pri = req_pri
1329
1330#define REQ_SEND \
1331 req_send (req); \
1332 \
1333 if (GIMME_V != G_VOID) \
1334 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335
1336MODULE = IO::AIO PACKAGE = IO::AIO 893MODULE = IO::AIO PACKAGE = IO::AIO
1337 894
1338PROTOTYPES: ENABLE 895PROTOTYPES: ENABLE
1339 896
1340BOOT: 897BOOT:
1341{ 898{
899 static const struct {
900 const char *name;
901 IV iv;
902 } *civ, const_iv[] = {
903# define const_niv(name, value) { # name, (IV) value },
904# define const_iv(name) { # name, (IV) name },
905# define const_eio(name) { # name, (IV) EIO_ ## name },
906
907 /* you have to re-run ./gendef0 after adding/removing any constants here */
908 /* the first block can be undef if missing */
909 const_iv (ENOSYS)
910 const_iv (EXDEV)
911 const_iv (EBADR)
912
913 /* for lseek */
914 const_iv (SEEK_DATA)
915 const_iv (SEEK_HOLE)
916
917 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
918 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
919 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
920 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
921 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
922 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
923
924 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
925 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
926 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
927 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
928 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
929
930 /* the second block will be 0 when missing */
931 const_iv (O_RDONLY)
932 const_iv (O_WRONLY)
933 const_iv (O_RDWR)
934 const_iv (O_CREAT)
935 const_iv (O_TRUNC)
936 const_iv (O_EXCL)
937 const_iv (O_APPEND)
938
939 const_iv (O_ASYNC)
940 const_iv (O_DIRECT)
941 const_iv (O_NOATIME)
942
943 const_iv (O_CLOEXEC)
944 const_iv (O_NOCTTY)
945 const_iv (O_NOFOLLOW)
946 const_iv (O_NONBLOCK)
947 const_iv (O_EXEC)
948 const_iv (O_SEARCH)
949 const_iv (O_DIRECTORY)
950 const_iv (O_DSYNC)
951 const_iv (O_RSYNC)
952 const_iv (O_SYNC)
953 const_iv (O_PATH)
954 const_iv (O_TMPFILE)
955 const_iv (O_TTY_INIT)
956
957 const_iv (S_IFIFO)
958 const_iv (S_IFCHR)
959 const_iv (S_IFBLK)
960 const_iv (S_IFLNK)
961 const_iv (S_IFREG)
962 const_iv (S_IFDIR)
963 const_iv (S_IFWHT)
964 const_iv (S_IFSOCK)
965 const_iv (S_IFMT)
966
967 const_iv (ST_RDONLY)
968 const_iv (ST_NOSUID)
969 const_iv (ST_NODEV)
970 const_iv (ST_NOEXEC)
971 const_iv (ST_SYNCHRONOUS)
972 const_iv (ST_MANDLOCK)
973 const_iv (ST_WRITE)
974 const_iv (ST_APPEND)
975 const_iv (ST_IMMUTABLE)
976 const_iv (ST_NOATIME)
977 const_iv (ST_NODIRATIME)
978 const_iv (ST_RELATIME)
979
980 const_iv (PROT_NONE)
981 const_iv (PROT_EXEC)
982 const_iv (PROT_READ)
983 const_iv (PROT_WRITE)
984
985 const_iv (MAP_PRIVATE)
986 const_iv (MAP_SHARED)
987 const_iv (MAP_FIXED)
988 const_iv (MAP_ANONYMOUS)
989
990 /* linuxish */
991 const_iv (MAP_LOCKED)
992 const_iv (MAP_NORESERVE)
993 const_iv (MAP_POPULATE)
994 const_iv (MAP_NONBLOCK)
995 const_iv (MAP_GROWSDOWN)
996 const_iv (MAP_32BIT)
997 const_iv (MAP_HUGETLB)
998 const_iv (MAP_STACK)
999
1000 const_iv (F_DUPFD_CLOEXEC)
1001
1002 const_iv (F_OFD_GETLK)
1003 const_iv (F_OFD_SETLK)
1004 const_iv (F_OFD_GETLKW)
1005
1006 const_iv (FIFREEZE)
1007 const_iv (FITHAW)
1008 const_iv (FITRIM)
1009 const_iv (FICLONE)
1010 const_iv (FICLONERANGE)
1011 const_iv (FIDEDUPERANGE)
1012
1013 const_iv (FS_IOC_GETFLAGS)
1014 const_iv (FS_IOC_SETFLAGS)
1015 const_iv (FS_IOC_GETVERSION)
1016 const_iv (FS_IOC_SETVERSION)
1017 const_iv (FS_IOC_FIEMAP)
1018 const_iv (FS_IOC_FSGETXATTR)
1019 const_iv (FS_IOC_FSSETXATTR)
1020 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1021 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1022 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1023
1024 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1025
1026 const_iv (FS_SECRM_FL)
1027 const_iv (FS_UNRM_FL)
1028 const_iv (FS_COMPR_FL)
1029 const_iv (FS_SYNC_FL)
1030 const_iv (FS_IMMUTABLE_FL)
1031 const_iv (FS_APPEND_FL)
1032 const_iv (FS_NODUMP_FL)
1033 const_iv (FS_NOATIME_FL)
1034 const_iv (FS_DIRTY_FL)
1035 const_iv (FS_COMPRBLK_FL)
1036 const_iv (FS_NOCOMP_FL)
1037 const_iv (FS_ENCRYPT_FL)
1038 const_iv (FS_BTREE_FL)
1039 const_iv (FS_INDEX_FL)
1040 const_iv (FS_JOURNAL_DATA_FL)
1041 const_iv (FS_NOTAIL_FL)
1042 const_iv (FS_DIRSYNC_FL)
1043 const_iv (FS_TOPDIR_FL)
1044 const_iv (FS_FL_USER_MODIFIABLE)
1045
1046 const_iv (FS_XFLAG_REALTIME)
1047 const_iv (FS_XFLAG_PREALLOC)
1048 const_iv (FS_XFLAG_IMMUTABLE)
1049 const_iv (FS_XFLAG_APPEND)
1050 const_iv (FS_XFLAG_SYNC)
1051 const_iv (FS_XFLAG_NOATIME)
1052 const_iv (FS_XFLAG_NODUMP)
1053 const_iv (FS_XFLAG_RTINHERIT)
1054 const_iv (FS_XFLAG_PROJINHERIT)
1055 const_iv (FS_XFLAG_NOSYMLINKS)
1056 const_iv (FS_XFLAG_EXTSIZE)
1057 const_iv (FS_XFLAG_EXTSZINHERIT)
1058 const_iv (FS_XFLAG_NODEFRAG)
1059 const_iv (FS_XFLAG_FILESTREAM)
1060 const_iv (FS_XFLAG_DAX)
1061 const_iv (FS_XFLAG_HASATTR)
1062
1063 const_iv (FIEMAP_FLAG_SYNC)
1064 const_iv (FIEMAP_FLAG_XATTR)
1065 const_iv (FIEMAP_FLAGS_COMPAT)
1066 const_iv (FIEMAP_EXTENT_LAST)
1067 const_iv (FIEMAP_EXTENT_UNKNOWN)
1068 const_iv (FIEMAP_EXTENT_DELALLOC)
1069 const_iv (FIEMAP_EXTENT_ENCODED)
1070 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1071 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1072 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1073 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1074 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1075 const_iv (FIEMAP_EXTENT_MERGED)
1076 const_iv (FIEMAP_EXTENT_SHARED)
1077
1078 const_iv (SPLICE_F_MOVE)
1079 const_iv (SPLICE_F_NONBLOCK)
1080 const_iv (SPLICE_F_MORE)
1081 const_iv (SPLICE_F_GIFT)
1082
1083 /* these are libeio constants, and are independent of gendef0 */
1084 const_eio (SEEK_SET)
1085 const_eio (SEEK_CUR)
1086 const_eio (SEEK_END)
1087
1088 const_eio (MCL_FUTURE)
1089 const_eio (MCL_CURRENT)
1090
1091 const_eio (MS_ASYNC)
1092 const_eio (MS_INVALIDATE)
1093 const_eio (MS_SYNC)
1094
1095 const_eio (MT_MODIFY)
1096
1097 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1098 const_eio (SYNC_FILE_RANGE_WRITE)
1099 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1100
1101 const_eio (FALLOC_FL_KEEP_SIZE)
1102 const_eio (FALLOC_FL_PUNCH_HOLE)
1103 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1104 const_eio (FALLOC_FL_ZERO_RANGE)
1105
1106 const_eio (RENAME_NOREPLACE)
1107 const_eio (RENAME_EXCHANGE)
1108 const_eio (RENAME_WHITEOUT)
1109
1110 const_eio (READDIR_DENTS)
1111 const_eio (READDIR_DIRS_FIRST)
1112 const_eio (READDIR_STAT_ORDER)
1113 const_eio (READDIR_FOUND_UNKNOWN)
1114
1115 const_eio (DT_UNKNOWN)
1116 const_eio (DT_FIFO)
1117 const_eio (DT_CHR)
1118 const_eio (DT_DIR)
1119 const_eio (DT_BLK)
1120 const_eio (DT_REG)
1121 const_eio (DT_LNK)
1122 const_eio (DT_SOCK)
1123 const_eio (DT_WHT)
1124 };
1125
1342 HV *stash = gv_stashpv ("IO::AIO", 1); 1126 aio_stash = gv_stashpv ("IO::AIO" , 1);
1127 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1128 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1129 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1343 1130
1344 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1131 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1345 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1132 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1346 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351 1133
1352 create_pipe (); 1134 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1353 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354}
1355 1135
1136 reinit ();
1137}
1138
1356void 1139void
1140reinit ()
1141 PROTOTYPE:
1142
1143void
1357max_poll_reqs (int nreqs) 1144max_poll_reqs (unsigned int nreqs)
1358 PROTOTYPE: $ 1145 PROTOTYPE: $
1359 CODE: 1146 CODE:
1360 max_poll_reqs = nreqs; 1147 eio_set_max_poll_reqs (nreqs);
1361 1148
1362void 1149void
1363max_poll_time (double nseconds) 1150max_poll_time (double nseconds)
1364 PROTOTYPE: $ 1151 PROTOTYPE: $
1365 CODE: 1152 CODE:
1366 max_poll_time = nseconds * AIO_TICKS; 1153 eio_set_max_poll_time (nseconds);
1367 1154
1368void 1155void
1369min_parallel (int nthreads) 1156min_parallel (unsigned int nthreads)
1370 PROTOTYPE: $
1371
1372void
1373max_parallel (int nthreads)
1374 PROTOTYPE: $
1375
1376void
1377max_idle (int nthreads)
1378 PROTOTYPE: $ 1157 PROTOTYPE: $
1379 CODE: 1158 CODE:
1380 set_max_idle (nthreads); 1159 eio_set_min_parallel (nthreads);
1381 1160
1382int 1161void
1383max_outstanding (int maxreqs) 1162max_parallel (unsigned int nthreads)
1384 PROTOTYPE: $ 1163 PROTOTYPE: $
1385 CODE: 1164 CODE:
1386 RETVAL = max_outstanding; 1165 eio_set_max_parallel (nthreads);
1166
1167void
1168max_idle (unsigned int nthreads)
1169 PROTOTYPE: $
1170 CODE:
1171 eio_set_max_idle (nthreads);
1172
1173void
1174idle_timeout (unsigned int seconds)
1175 PROTOTYPE: $
1176 CODE:
1177 eio_set_idle_timeout (seconds);
1178
1179void
1180max_outstanding (unsigned int maxreqs)
1181 PROTOTYPE: $
1182 CODE:
1387 max_outstanding = maxreqs; 1183 max_outstanding = maxreqs;
1388 OUTPUT:
1389 RETVAL
1390 1184
1391void 1185void
1392aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1186aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393 PROTOTYPE: $$$;$
1394 PPCODE: 1187 PPCODE:
1395{ 1188{
1396 dREQ; 1189 dREQ;
1397 1190
1191 req->type = EIO_WD_OPEN;
1192 req_set_path1 (req, pathname);
1193
1194 REQ_SEND;
1195}
1196
1197void
1198aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1199 PPCODE:
1200{
1201 dREQ;
1202
1398 req->type = REQ_OPEN; 1203 req->type = EIO_OPEN;
1399 req->sv1 = newSVsv (pathname); 1204 req_set_path1 (req, pathname);
1400 req->ptr1 = SvPVbyte_nolen (req->sv1);
1401 req->int1 = flags; 1205 req->int1 = flags;
1402 req->mode = mode; 1206 req->int2 = mode;
1403 1207
1404 REQ_SEND; 1208 REQ_SEND;
1405} 1209}
1406 1210
1407void 1211void
1408aio_close (SV *fh, SV *callback=&PL_sv_undef) 1212aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409 PROTOTYPE: $;$
1410 ALIAS: 1213 ALIAS:
1411 aio_close = REQ_CLOSE
1412 aio_fsync = REQ_FSYNC 1214 aio_fsync = EIO_FSYNC
1413 aio_fdatasync = REQ_FDATASYNC 1215 aio_fdatasync = EIO_FDATASYNC
1216 aio_syncfs = EIO_SYNCFS
1414 PPCODE: 1217 PPCODE:
1415{ 1218{
1219 int fd = s_fileno_croak (fh, 0);
1416 dREQ; 1220 dREQ;
1417 1221
1418 req->type = ix; 1222 req->type = ix;
1419 req->sv1 = newSVsv (fh); 1223 req->sv1 = newSVsv (fh);
1420 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1224 req->int1 = fd;
1421 1225
1422 REQ_SEND (req); 1226 REQ_SEND;
1423} 1227}
1424 1228
1425void 1229void
1230aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1231 PPCODE:
1232{
1233 int fd = s_fileno_croak (fh, 0);
1234 dREQ;
1235
1236 req->type = EIO_SYNC_FILE_RANGE;
1237 req->sv1 = newSVsv (fh);
1238 req->int1 = fd;
1239 req->offs = offset;
1240 req->size = nbytes;
1241 req->int2 = flags;
1242
1243 REQ_SEND;
1244}
1245
1246void
1247aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1248 PPCODE:
1249{
1250 int fd = s_fileno_croak (fh, 0);
1251 dREQ;
1252
1253 req->type = EIO_FALLOCATE;
1254 req->sv1 = newSVsv (fh);
1255 req->int1 = fd;
1256 req->int2 = mode;
1257 req->offs = offset;
1258 req->size = len;
1259
1260 REQ_SEND;
1261}
1262
1263void
1264aio_close (SV *fh, SV *callback = &PL_sv_undef)
1265 PPCODE:
1266{
1267 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1268 int fd = s_fileno_croak (fh, 0);
1269 dREQ;
1270
1271 if (expect_false (close_fd < 0))
1272 {
1273 int pipefd [2];
1274
1275 if (
1276#ifdef _WIN32
1277 _pipe (pipefd, 1, _O_BINARY) < 0
1278#else
1279 pipe (pipefd) < 0
1280 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1281#endif
1282 || close (pipefd [1]) < 0
1283 )
1284 abort (); /*D*/
1285
1286 close_fd = pipefd [0];
1287 }
1288
1289 req->type = EIO_DUP2;
1290 req->int1 = close_fd;
1291 req->sv2 = newSVsv (fh);
1292 req->int2 = fd;
1293
1294 REQ_SEND;
1295}
1296
1297void
1298aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1299 PPCODE:
1300{
1301 int fd = s_fileno_croak (fh, 0);
1302 dREQ;
1303
1304 req->type = EIO_SEEK;
1305 req->sv1 = newSVsv (fh);
1306 req->int1 = fd;
1307 req->offs = SvVAL64 (offset);
1308 req->int2 = whence;
1309
1310 REQ_SEND;
1311}
1312
1313void
1426aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef) 1314aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427 ALIAS: 1315 ALIAS:
1428 aio_read = REQ_READ 1316 aio_read = EIO_READ
1429 aio_write = REQ_WRITE 1317 aio_write = EIO_WRITE
1430 PROTOTYPE: $$$$$;$
1431 PPCODE: 1318 PPCODE:
1432{ 1319{
1433 STRLEN svlen; 1320 STRLEN svlen;
1321 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434 char *svptr = SvPVbyte (data, svlen); 1322 char *svptr = SvPVbyte (data, svlen);
1435 1323 UV len = SvUV (length);
1436 SvUPGRADE (data, SVt_PV);
1437 SvPOK_on (data);
1438 1324
1439 if (dataoffset < 0) 1325 if (dataoffset < 0)
1440 dataoffset += svlen; 1326 dataoffset += svlen;
1441 1327
1442 if (dataoffset < 0 || dataoffset > svlen) 1328 if (dataoffset < 0 || dataoffset > svlen)
1443 croak ("data offset outside of string"); 1329 croak ("dataoffset outside of data scalar");
1444 1330
1445 if (ix == REQ_WRITE) 1331 if (ix == EIO_WRITE)
1446 { 1332 {
1447 /* write: check length and adjust. */ 1333 /* write: check length and adjust. */
1448 if (length < 0 || length + dataoffset > svlen) 1334 if (!SvOK (length) || len + dataoffset > svlen)
1449 length = svlen - dataoffset; 1335 len = svlen - dataoffset;
1450 } 1336 }
1451 else 1337 else
1452 { 1338 {
1453 /* read: grow scalar as necessary */ 1339 /* read: check type and grow scalar as necessary */
1340 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1454 svptr = SvGROW (data, length + dataoffset + 1); 1341 svptr = sv_grow (data, len + dataoffset + 1);
1342 else if (SvCUR (data) < len + dataoffset)
1343 croak ("length + dataoffset outside of scalar, and cannot grow");
1455 } 1344 }
1456
1457 if (length < 0)
1458 croak ("length must not be negative");
1459 1345
1460 { 1346 {
1461 dREQ; 1347 dREQ;
1462 1348
1463 req->type = ix; 1349 req->type = ix;
1464 req->sv1 = newSVsv (fh); 1350 req->sv1 = newSVsv (fh);
1465 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1351 req->int1 = fd;
1466 : IoOFP (sv_2io (fh)));
1467 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1352 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1468 req->size = length; 1353 req->size = len;
1469 req->sv2 = SvREFCNT_inc (data); 1354 req->sv2 = SvREFCNT_inc (data);
1470 req->ptr1 = (char *)svptr + dataoffset; 1355 req->ptr2 = (char *)svptr + dataoffset;
1471 req->stroffset = dataoffset; 1356 req->stroffset = dataoffset;
1472 1357
1473 if (!SvREADONLY (data)) 1358 if (!SvREADONLY (data))
1474 { 1359 {
1475 SvREADONLY_on (data); 1360 SvREADONLY_on (data);
… …
1479 REQ_SEND; 1364 REQ_SEND;
1480 } 1365 }
1481} 1366}
1482 1367
1483void 1368void
1484aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1369aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1485 PROTOTYPE: $$;$ 1370 ALIAS:
1371 aio_ioctl = EIO_IOCTL
1372 aio_fcntl = EIO_FCNTL
1486 PPCODE: 1373 PPCODE:
1487{ 1374{
1488 SV *data; 1375 int fd = s_fileno_croak (fh, 0);
1489 dREQ; 1376 char *svptr;
1490 1377
1491 data = newSV (NAME_MAX); 1378 if (SvPOK (arg) || !SvNIOK (arg))
1492 SvPOK_on (data);
1493
1494 req->type = REQ_READLINK;
1495 req->sv1 = newSVsv (path);
1496 req->ptr2 = SvPVbyte_nolen (req->sv1);
1497 req->sv2 = data;
1498 req->ptr1 = SvPVbyte_nolen (data);
1499
1500 REQ_SEND;
1501}
1502
1503void
1504aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1505 PROTOTYPE: $$$$;$
1506 PPCODE:
1507{
1508 dREQ;
1509
1510 req->type = REQ_SENDFILE;
1511 req->sv1 = newSVsv (out_fh);
1512 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1513 req->sv2 = newSVsv (in_fh);
1514 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1515 req->offs = SvVAL64 (in_offset);
1516 req->size = length;
1517
1518 REQ_SEND;
1519}
1520
1521void
1522aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1523 PROTOTYPE: $$$;$
1524 PPCODE:
1525{
1526 dREQ;
1527
1528 req->type = REQ_READAHEAD;
1529 req->sv1 = newSVsv (fh);
1530 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1531 req->offs = SvVAL64 (offset);
1532 req->size = length;
1533
1534 REQ_SEND;
1535}
1536
1537void
1538aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1539 ALIAS:
1540 aio_stat = REQ_STAT
1541 aio_lstat = REQ_LSTAT
1542 PPCODE:
1543{
1544 dREQ;
1545
1546 req->ptr2 = malloc (sizeof (Stat_t));
1547 if (!req->ptr2)
1548 { 1379 {
1549 req_destroy (req); 1380 STRLEN svlen;
1550 croak ("out of memory during aio_stat statdata allocation"); 1381 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1551 } 1382#ifdef IOCPARM_LEN
1383 STRLEN need = IOCPARM_LEN (request);
1384#else
1385 STRLEN need = 256;
1386#endif
1552 1387
1553 req->flags |= FLAG_PTR2_FREE; 1388 if (svlen < need)
1554 req->sv1 = newSVsv (fh_or_path); 1389 svptr = SvGROW (arg, need);
1555
1556 if (SvPOK (fh_or_path))
1557 {
1558 req->type = ix;
1559 req->ptr1 = SvPVbyte_nolen (req->sv1);
1560 } 1390 }
1561 else 1391 else
1392 svptr = (char *)SvIV (arg);
1393
1562 { 1394 {
1395 dREQ;
1396
1563 req->type = REQ_FSTAT; 1397 req->type = ix;
1564 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1398 req->sv1 = newSVsv (fh);
1399 req->int1 = fd;
1400 req->int2 = (long)request;
1401 req->sv2 = SvREFCNT_inc (arg);
1402 req->ptr2 = svptr;
1403
1404 REQ_SEND;
1565 } 1405 }
1406}
1407
1408void
1409aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1410 ALIAS:
1411 aio_readlink = EIO_READLINK
1412 aio_realpath = EIO_REALPATH
1413 PPCODE:
1414{
1415 dREQ;
1416
1417 req->type = ix;
1418 req_set_path1 (req, pathname);
1566 1419
1567 REQ_SEND; 1420 REQ_SEND;
1568} 1421}
1569 1422
1570void 1423void
1424aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1425 PPCODE:
1426{
1427 int ifd = s_fileno_croak (in_fh , 0);
1428 int ofd = s_fileno_croak (out_fh, 1);
1429 dREQ;
1430
1431 req->type = EIO_SENDFILE;
1432 req->sv1 = newSVsv (out_fh);
1433 req->int1 = ofd;
1434 req->sv2 = newSVsv (in_fh);
1435 req->int2 = ifd;
1436 req->offs = in_offset;
1437 req->size = length;
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1444 PPCODE:
1445{
1446 int fd = s_fileno_croak (fh, 0);
1447 dREQ;
1448
1449 req->type = EIO_READAHEAD;
1450 req->sv1 = newSVsv (fh);
1451 req->int1 = fd;
1452 req->offs = offset;
1453 req->size = length;
1454
1455 REQ_SEND;
1456}
1457
1458void
1459aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1460 ALIAS:
1461 aio_stat = EIO_STAT
1462 aio_lstat = EIO_LSTAT
1463 aio_statvfs = EIO_STATVFS
1464 PPCODE:
1465{
1466 dREQ;
1467
1468 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1469
1470 REQ_SEND;
1471}
1472
1473UV
1474major (UV dev)
1475 ALIAS:
1476 minor = 1
1477 CODE:
1478 RETVAL = ix ? minor (dev) : major (dev);
1479 OUTPUT:
1480 RETVAL
1481
1482UV
1483makedev (UV maj, UV min)
1484 CODE:
1485 RETVAL = makedev (maj, min);
1486 OUTPUT:
1487 RETVAL
1488
1489void
1571aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1490aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1572 PPCODE: 1491 PPCODE:
1573{ 1492{
1574 dREQ; 1493 dREQ;
1575 1494
1576 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1495 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1577 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1496 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1578 req->sv1 = newSVsv (fh_or_path); 1497 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1579
1580 if (SvPOK (fh_or_path))
1581 {
1582 req->type = REQ_UTIME;
1583 req->ptr1 = SvPVbyte_nolen (req->sv1);
1584 }
1585 else
1586 {
1587 req->type = REQ_FUTIME;
1588 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1589 }
1590 1498
1591 REQ_SEND; 1499 REQ_SEND;
1592} 1500}
1593 1501
1594void 1502void
1595aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1503aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1596 PPCODE: 1504 PPCODE:
1597{ 1505{
1598 dREQ; 1506 dREQ;
1599 1507
1600 req->mode = mode; 1508 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1601 req->sv1 = newSVsv (fh_or_path); 1509 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1602
1603 if (SvPOK (fh_or_path))
1604 {
1605 req->type = REQ_CHMOD;
1606 req->ptr1 = SvPVbyte_nolen (req->sv1);
1607 }
1608 else
1609 {
1610 req->type = REQ_FCHMOD;
1611 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1612 }
1613 1510
1614 REQ_SEND; 1511 REQ_SEND;
1615} 1512}
1616 1513
1617void 1514void
1515aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1516 PPCODE:
1517{
1518 dREQ;
1519
1520 req->int2 = mode;
1521 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1522
1523 REQ_SEND;
1524}
1525
1526void
1618aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) 1527aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1619 PPCODE: 1528 PPCODE:
1620{ 1529{
1621 dREQ; 1530 dREQ;
1622 1531
1623 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1532 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1624 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1533 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1625 req->sv1 = newSVsv (fh_or_path); 1534 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1626
1627 if (SvPOK (fh_or_path))
1628 {
1629 req->type = REQ_CHOWN;
1630 req->ptr1 = SvPVbyte_nolen (req->sv1);
1631 }
1632 else
1633 {
1634 req->type = REQ_FCHOWN;
1635 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1636 }
1637 1535
1638 REQ_SEND; 1536 REQ_SEND;
1639} 1537}
1640 1538
1641void 1539void
1540aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1541 PPCODE:
1542{
1543 dREQ;
1544
1545 req->type = EIO_READDIR;
1546 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1547
1548 if (flags & EIO_READDIR_DENTS)
1549 req->int1 |= EIO_READDIR_CUSTOM2;
1550
1551 req_set_path1 (req, pathname);
1552
1553 REQ_SEND;
1554}
1555
1556void
1557aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1558 PPCODE:
1559{
1560 dREQ;
1561
1562 req->type = EIO_MKDIR;
1563 req->int2 = mode;
1564 req_set_path1 (req, pathname);
1565
1566 REQ_SEND;
1567}
1568
1569void
1642aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1570aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1643 ALIAS: 1571 ALIAS:
1644 aio_unlink = REQ_UNLINK 1572 aio_unlink = EIO_UNLINK
1645 aio_rmdir = REQ_RMDIR 1573 aio_rmdir = EIO_RMDIR
1646 aio_readdir = REQ_READDIR 1574 aio_readdir = EIO_READDIR
1647 PPCODE: 1575 PPCODE:
1648{ 1576{
1649 dREQ; 1577 dREQ;
1650 1578
1651 req->type = ix; 1579 req->type = ix;
1652 req->sv1 = newSVsv (pathname); 1580 req_set_path1 (req, pathname);
1653 req->ptr1 = SvPVbyte_nolen (req->sv1);
1654 1581
1655 REQ_SEND; 1582 REQ_SEND;
1656} 1583}
1657 1584
1658void 1585void
1659aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) 1586aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1587 ALIAS:
1588 aio_link = EIO_LINK
1589 aio_symlink = EIO_SYMLINK
1590 aio_rename = EIO_RENAME
1660 PPCODE: 1591 PPCODE:
1661{ 1592{
1662 dREQ; 1593 eio_wd wd2 = 0;
1663
1664 req->type = REQ_MKDIR;
1665 req->sv1 = newSVsv (pathname);
1666 req->ptr1 = SvPVbyte_nolen (req->sv1);
1667 req->mode = mode;
1668
1669 REQ_SEND;
1670}
1671
1672void
1673aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1674 ALIAS:
1675 aio_link = REQ_LINK
1676 aio_symlink = REQ_SYMLINK
1677 aio_rename = REQ_RENAME
1678 PPCODE:
1679{
1680 dREQ; 1594 dREQ;
1681 1595
1682 req->type = ix; 1596 req->type = ix;
1683 req->sv2 = newSVsv (oldpath); 1597 req_set_path1 (req, oldpath);
1684 req->ptr2 = SvPVbyte_nolen (req->sv2); 1598 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1685 req->sv1 = newSVsv (newpath); 1599 req->int3 = (long)wd2;
1686 req->ptr1 = SvPVbyte_nolen (req->sv1);
1687 1600
1688 REQ_SEND; 1601 REQ_SEND;
1689} 1602}
1690 1603
1691void 1604void
1692aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1605aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1693 PPCODE: 1606 PPCODE:
1694{ 1607{
1608 eio_wd wd2 = 0;
1695 dREQ; 1609 dREQ;
1696 1610
1697 req->type = REQ_MKNOD; 1611 req->type = EIO_RENAME;
1698 req->sv1 = newSVsv (pathname); 1612 req_set_path1 (req, oldpath);
1699 req->ptr1 = SvPVbyte_nolen (req->sv1); 1613 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1700 req->mode = (mode_t)mode; 1614 req->int2 = flags;
1701 req->offs = dev; 1615 req->int3 = (long)wd2;
1702 1616
1703 REQ_SEND; 1617 REQ_SEND;
1704} 1618}
1705 1619
1706void 1620void
1707aio_busy (double delay, SV *callback=&PL_sv_undef) 1621aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1708 PPCODE: 1622 PPCODE:
1709{ 1623{
1710 dREQ; 1624 dREQ;
1625
1626 req->type = EIO_MKNOD;
1627 req->int2 = (mode_t)mode;
1628 req->offs = dev;
1629 req_set_path1 (req, pathname);
1630
1631 REQ_SEND;
1632}
1711 1633
1634void
1635aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1636 ALIAS:
1637 aio_mtouch = EIO_MTOUCH
1638 aio_msync = EIO_MSYNC
1639 PPCODE:
1640{
1641 STRLEN svlen;
1642 char *svptr = SvPVbyte (data, svlen);
1643 UV len = SvUV (length);
1644
1645 if (flags < 0)
1646 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1647
1648 if (offset < 0)
1649 offset += svlen;
1650
1651 if (offset < 0 || offset > svlen)
1652 croak ("offset outside of scalar");
1653
1654 if (!SvOK (length) || len + offset > svlen)
1655 len = svlen - offset;
1656
1657 {
1658 dREQ;
1659
1660 req->type = ix;
1661 req->sv2 = SvREFCNT_inc (data);
1662 req->ptr2 = (char *)svptr + offset;
1663 req->size = len;
1664 req->int1 = flags;
1665
1666 REQ_SEND;
1667 }
1668}
1669
1670void
1671aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1672 PPCODE:
1673{
1674 STRLEN svlen;
1675 char *svptr = SvPVbyte (data, svlen);
1676 UV len = SvUV (length);
1677
1678 if (offset < 0)
1679 offset += svlen;
1680
1681 if (offset < 0 || offset > svlen)
1682 croak ("offset outside of scalar");
1683
1684 if (!SvOK (length) || len + offset > svlen)
1685 len = svlen - offset;
1686
1687 {
1688 dREQ;
1689
1690 req->type = EIO_MLOCK;
1691 req->sv2 = SvREFCNT_inc (data);
1692 req->ptr2 = (char *)svptr + offset;
1693 req->size = len;
1694
1695 REQ_SEND;
1696 }
1697}
1698
1699void
1700aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1701 PPCODE:
1702{
1703 dREQ;
1704
1705 req->type = EIO_MLOCKALL;
1706 req->int1 = flags;
1707
1708 REQ_SEND;
1709}
1710
1711void
1712aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1713 PPCODE:
1714{
1715 int fd = s_fileno_croak (fh, 0);
1716 dREQ;
1717
1718 req->type = EIO_CUSTOM;
1719 req->sv1 = newSVsv (fh);
1720 req->int1 = fd;
1721
1722 req->feed = fiemap;
1723#if HAVE_FIEMAP
1724 /* keep our fingers crossed that the next two types are 64 bit */
1725 req->offs = start;
1726 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1727 req->int2 = flags;
1728 req->int3 = SvOK (count) ? SvIV (count) : -1;
1729#endif
1730
1731 REQ_SEND;
1732}
1733
1734void
1735aio_busy (double delay, SV *callback = &PL_sv_undef)
1736 PPCODE:
1737{
1738 dREQ;
1739
1712 req->type = REQ_BUSY; 1740 req->type = EIO_BUSY;
1713 req->nv1 = delay < 0. ? 0. : delay; 1741 req->nv1 = delay < 0. ? 0. : delay;
1714 1742
1715 REQ_SEND; 1743 REQ_SEND;
1716} 1744}
1717 1745
1718void 1746void
1719aio_group (SV *callback=&PL_sv_undef) 1747aio_group (SV *callback = &PL_sv_undef)
1720 PROTOTYPE: ;$
1721 PPCODE: 1748 PPCODE:
1722{ 1749{
1723 dREQ; 1750 dREQ;
1724 1751
1725 req->type = REQ_GROUP; 1752 req->type = EIO_GROUP;
1726 1753
1754 PUTBACK;
1727 req_send (req); 1755 req_submit (req);
1756 SPAGAIN;
1757
1728 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1758 XPUSHs (req_sv (req, aio_grp_stash));
1729} 1759}
1730 1760
1731void 1761void
1732aio_nop (SV *callback=&PL_sv_undef) 1762aio_nop (SV *callback = &PL_sv_undef)
1763 ALIAS:
1764 aio_nop = EIO_NOP
1765 aio_sync = EIO_SYNC
1733 PPCODE: 1766 PPCODE:
1734{ 1767{
1735 dREQ; 1768 dREQ;
1736 1769
1737 req->type = REQ_NOP; 1770 req->type = ix;
1738 1771
1739 REQ_SEND; 1772 REQ_SEND;
1740} 1773}
1741 1774
1742int 1775int
1743aioreq_pri (int pri = 0) 1776aioreq_pri (int pri = NO_INIT)
1744 PROTOTYPE: ;$
1745 CODE: 1777 CODE:
1746 RETVAL = next_pri - PRI_BIAS; 1778 RETVAL = next_pri;
1747 if (items > 0) 1779 if (items > 0)
1748 { 1780 {
1749 if (pri < PRI_MIN) pri = PRI_MIN; 1781 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1750 if (pri > PRI_MAX) pri = PRI_MAX; 1782 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1751 next_pri = pri + PRI_BIAS; 1783 next_pri = pri;
1752 } 1784 }
1753 OUTPUT: 1785 OUTPUT:
1754 RETVAL 1786 RETVAL
1755 1787
1756void 1788void
1757aioreq_nice (int nice = 0) 1789aioreq_nice (int nice = 0)
1758 CODE: 1790 CODE:
1759 nice = next_pri - nice; 1791 nice = next_pri - nice;
1760 if (nice < PRI_MIN) nice = PRI_MIN; 1792 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1761 if (nice > PRI_MAX) nice = PRI_MAX; 1793 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1762 next_pri = nice + PRI_BIAS; 1794 next_pri = nice;
1763 1795
1764void 1796void
1765flush () 1797flush ()
1766 PROTOTYPE:
1767 CODE: 1798 CODE:
1768 while (nreqs) 1799 while (eio_nreqs ())
1769 { 1800 {
1770 poll_wait (); 1801 poll_wait ();
1771 poll_cb (); 1802 poll_cb ();
1772 } 1803 }
1773 1804
1774int 1805int
1775poll() 1806poll ()
1776 PROTOTYPE:
1777 CODE: 1807 CODE:
1778 poll_wait (); 1808 poll_wait ();
1779 RETVAL = poll_cb (); 1809 RETVAL = poll_cb ();
1780 OUTPUT: 1810 OUTPUT:
1781 RETVAL 1811 RETVAL
1782 1812
1783int 1813int
1784poll_fileno() 1814poll_fileno ()
1785 PROTOTYPE:
1786 CODE: 1815 CODE:
1787 RETVAL = respipe [0]; 1816 RETVAL = s_epipe_fd (&respipe);
1788 OUTPUT: 1817 OUTPUT:
1789 RETVAL 1818 RETVAL
1790 1819
1791int 1820int
1792poll_cb(...) 1821poll_cb (...)
1793 PROTOTYPE: 1822 PROTOTYPE:
1794 CODE: 1823 CODE:
1795 RETVAL = poll_cb (); 1824 RETVAL = poll_cb ();
1796 OUTPUT: 1825 OUTPUT:
1797 RETVAL 1826 RETVAL
1798 1827
1799void 1828void
1800poll_wait() 1829poll_wait ()
1801 PROTOTYPE:
1802 CODE: 1830 CODE:
1803 poll_wait (); 1831 poll_wait ();
1804 1832
1805void
1806setsig (int signum = SIGIO)
1807 PROTOTYPE: ;$
1808 CODE:
1809{
1810 if (block_sig_level)
1811 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1812
1813 LOCK (reslock);
1814 main_tid = pthread_self ();
1815 main_sig = signum;
1816 UNLOCK (reslock);
1817
1818 if (main_sig && npending)
1819 pthread_kill (main_tid, main_sig);
1820}
1821
1822void
1823aio_block (SV *cb)
1824 PROTOTYPE: &
1825 PPCODE:
1826{
1827 int count;
1828
1829 block_sig ();
1830 PUSHMARK (SP);
1831 PUTBACK;
1832 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1833 SPAGAIN;
1834 unblock_sig ();
1835
1836 if (SvTRUE (ERRSV))
1837 croak (0);
1838
1839 XSRETURN (count);
1840}
1841
1842int 1833int
1843nreqs() 1834nreqs ()
1844 PROTOTYPE:
1845 CODE: 1835 CODE:
1846 RETVAL = nreqs; 1836 RETVAL = eio_nreqs ();
1847 OUTPUT: 1837 OUTPUT:
1848 RETVAL 1838 RETVAL
1849 1839
1850int 1840int
1851nready() 1841nready ()
1852 PROTOTYPE:
1853 CODE: 1842 CODE:
1854 RETVAL = get_nready (); 1843 RETVAL = eio_nready ();
1855 OUTPUT: 1844 OUTPUT:
1856 RETVAL 1845 RETVAL
1857 1846
1858int 1847int
1859npending() 1848npending ()
1860 PROTOTYPE:
1861 CODE: 1849 CODE:
1862 RETVAL = get_npending (); 1850 RETVAL = eio_npending ();
1863 OUTPUT: 1851 OUTPUT:
1864 RETVAL 1852 RETVAL
1865 1853
1866int 1854int
1867nthreads() 1855nthreads ()
1868 PROTOTYPE:
1869 CODE: 1856 CODE:
1870 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1857 RETVAL = eio_nthreads ();
1871 RETVAL = started;
1872 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1873 OUTPUT: 1858 OUTPUT:
1874 RETVAL 1859 RETVAL
1875 1860
1861int
1862fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1863 CODE:
1864 RETVAL = posix_fadvise (fh, offset, length, advice);
1865 OUTPUT:
1866 RETVAL
1867
1868IV
1869sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1870 CODE:
1871 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1872 OUTPUT:
1873 RETVAL
1874
1875void
1876mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1877 PPCODE:
1878 sv_unmagic (scalar, MMAP_MAGIC);
1879{
1880 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1881 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1882 if (addr == (void *)-1)
1883 XSRETURN_NO;
1884
1885 sv_force_normal (scalar);
1886
1887 /* we store the length in mg_obj, as namlen is I32 :/ */
1888 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1889 ->mg_obj = (SV *)length;
1890
1891 SvUPGRADE (scalar, SVt_PV); /* nop... */
1892
1893 if (!(prot & PROT_WRITE))
1894 SvREADONLY_on (scalar);
1895
1896 if (SvLEN (scalar))
1897 Safefree (SvPVX (scalar));
1898
1899 SvPVX (scalar) = (char *)addr;
1900 SvCUR_set (scalar, length);
1901 SvLEN_set (scalar, 0);
1902 SvPOK_only (scalar);
1903
1904 XSRETURN_YES;
1905}
1906
1907void
1908munmap (SV *scalar)
1909 CODE:
1910 sv_unmagic (scalar, MMAP_MAGIC);
1911
1912int
1913madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1914 ALIAS:
1915 mprotect = 1
1916 CODE:
1917{
1918 STRLEN svlen;
1919 void *addr = SvPVbyte (scalar, svlen);
1920 STRLEN len = SvUV (length);
1921
1922 if (offset < 0)
1923 offset += svlen;
1924
1925 if (offset < 0 || offset > svlen)
1926 croak ("offset outside of scalar");
1927
1928 if (!SvOK (length) || len + offset > svlen)
1929 len = svlen - offset;
1930
1931 addr = (void *)(((intptr_t)addr) + offset);
1932 eio_page_align (&addr, &len);
1933
1934 switch (ix)
1935 {
1936 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1937 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1938 }
1939}
1940 OUTPUT:
1941 RETVAL
1942
1943int
1944munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1945 CODE:
1946{
1947 STRLEN svlen;
1948 void *addr = SvPVbyte (scalar, svlen);
1949 size_t len = SvUV (length);
1950
1951 if (offset < 0)
1952 offset += svlen;
1953
1954 if (offset < 0 || offset > svlen)
1955 croak ("offset outside of scalar");
1956
1957 if (!SvOK (length) || len + offset > svlen)
1958 len = svlen - offset;
1959
1960 addr = (void *)(((intptr_t)addr) + offset);
1961 eio_page_align (&addr, &len);
1962#if _POSIX_MEMLOCK_RANGE
1963 RETVAL = munlock (addr, len);
1964#else
1965 RETVAL = EIO_ENOSYS ();
1966#endif
1967}
1968 OUTPUT:
1969 RETVAL
1970
1971int
1972munlockall ()
1973 CODE:
1974#if _POSIX_MEMLOCK
1975 munlockall ();
1976#else
1977 RETVAL = EIO_ENOSYS ();
1978#endif
1979 OUTPUT:
1980 RETVAL
1981
1982int
1983splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1984 CODE:
1985{
1986#if HAVE_LINUX_SPLICE
1987 loff_t off_in_, off_out_;
1988 RETVAL = splice (
1989 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1990 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1991 length, flags
1992 );
1993#else
1994 RETVAL = EIO_ENOSYS ();
1995#endif
1996}
1997 OUTPUT:
1998 RETVAL
1999
2000int
2001tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2002 CODE:
2003#if HAVE_LINUX_SPLICE
2004 RETVAL = tee (rfh, wfh, length, flags);
2005#else
2006 RETVAL = EIO_ENOSYS ();
2007#endif
2008 OUTPUT:
2009 RETVAL
2010
2011int
2012pipesize (aio_rfd rfh, int new_size = -1)
2013 PROTOTYPE: $;$
2014 CODE:
2015#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2016 if (new_size >= 0)
2017 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2018 else
2019 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2020#else
2021 errno = ENOSYS;
2022 RETVAL = -1;
2023#endif
2024 OUTPUT:
2025 RETVAL
2026
2027void
2028pipe2 (int flags = 0)
2029 PROTOTYPE: ;$
2030 PPCODE:
2031{
2032 int fd[2];
2033 int res;
2034
2035 if (flags)
2036#if HAVE_PIPE2
2037 res = pipe2 (fd, flags);
2038#else
2039 res = (errno = ENOSYS, -1);
2040#endif
2041 else
2042 res = pipe (fd);
2043
2044 if (!res)
2045 {
2046 EXTEND (SP, 2);
2047 PUSHs (newmortalFH (fd[0], O_RDONLY));
2048 PUSHs (newmortalFH (fd[1], O_WRONLY));
2049 }
2050}
2051
2052void _on_next_submit (SV *cb)
2053 CODE:
2054 SvREFCNT_dec (on_next_submit);
2055 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2056
1876PROTOTYPES: DISABLE 2057PROTOTYPES: DISABLE
2058
2059MODULE = IO::AIO PACKAGE = IO::AIO::WD
2060
2061BOOT:
2062{
2063 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2064 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2065}
2066
2067void
2068DESTROY (SV *self)
2069 CODE:
2070{
2071 aio_wd wd = SvAIO_WD (self);
2072#if HAVE_AT
2073 {
2074 SV *callback = &PL_sv_undef;
2075 dREQ; /* clobbers next_pri :/ */
2076 next_pri = req->pri; /* restore next_pri */
2077 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2078 req->type = EIO_WD_CLOSE;
2079 req->wd = wd;
2080 REQ_SEND;
2081 }
2082#else
2083 eio_wd_close_sync (wd);
2084#endif
2085}
1877 2086
1878MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2087MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1879 2088
1880void 2089void
1881cancel (aio_req_ornot req) 2090cancel (aio_req_ornot req)
1882 CODE: 2091 CODE:
1883 req_cancel (req); 2092 eio_cancel (req);
1884 2093
1885void 2094void
1886cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2095cb (aio_req_ornot req, SV *callback = NO_INIT)
1887 CODE: 2096 PPCODE:
2097{
2098 if (GIMME_V != G_VOID)
2099 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2100
2101 if (items > 1)
2102 {
2103 SV *cb_cv = get_cb (callback);
2104
1888 SvREFCNT_dec (req->callback); 2105 SvREFCNT_dec (req->callback);
1889 req->callback = newSVsv (callback); 2106 req->callback = SvREFCNT_inc (cb_cv);
2107 }
2108}
1890 2109
1891MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2110MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1892 2111
1893void 2112void
1894add (aio_req grp, ...) 2113add (aio_req grp, ...)
1895 PPCODE: 2114 PPCODE:
1896{ 2115{
1897 int i; 2116 int i;
1898 aio_req req;
1899
1900 if (main_sig && !block_sig_level)
1901 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1902 2117
1903 if (grp->int1 == 2) 2118 if (grp->int1 == 2)
1904 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2119 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905 2120
1906 for (i = 1; i < items; ++i ) 2121 for (i = 1; i < items; ++i )
1907 { 2122 {
2123 aio_req req;
2124
1908 if (GIMME_V != G_VOID) 2125 if (GIMME_V != G_VOID)
1909 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2126 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1910 2127
1911 req = SvAIO_REQ (ST (i)); 2128 req = SvAIO_REQ (ST (i));
1912 2129
1913 if (req) 2130 if (req)
1914 { 2131 eio_grp_add (grp, req);
1915 ++grp->size;
1916 req->grp = grp;
1917
1918 req->grp_prev = 0;
1919 req->grp_next = grp->grp_first;
1920
1921 if (grp->grp_first)
1922 grp->grp_first->grp_prev = req;
1923
1924 grp->grp_first = req;
1925 }
1926 } 2132 }
1927} 2133}
1928 2134
1929void 2135void
1930cancel_subs (aio_req_ornot req) 2136cancel_subs (aio_req_ornot req)
… …
1939 AV *av; 2145 AV *av;
1940 2146
1941 grp->errorno = errno; 2147 grp->errorno = errno;
1942 2148
1943 av = newAV (); 2149 av = newAV ();
2150 av_extend (av, items - 1);
1944 2151
1945 for (i = 1; i < items; ++i ) 2152 for (i = 1; i < items; ++i )
1946 av_push (av, newSVsv (ST (i))); 2153 av_push (av, newSVsv (ST (i)));
1947 2154
1948 SvREFCNT_dec (grp->sv1); 2155 SvREFCNT_dec (grp->sv1);
… …
1955 grp->errorno = errorno; 2162 grp->errorno = errorno;
1956 2163
1957void 2164void
1958limit (aio_req grp, int limit) 2165limit (aio_req grp, int limit)
1959 CODE: 2166 CODE:
1960 grp->int2 = limit; 2167 eio_grp_limit (grp, limit);
1961 aio_grp_feed (grp);
1962 2168
1963void 2169void
1964feed (aio_req grp, SV *callback=&PL_sv_undef) 2170feed (aio_req grp, SV *callback = &PL_sv_undef)
1965 CODE: 2171 CODE:
1966{ 2172{
1967 SvREFCNT_dec (grp->sv2); 2173 SvREFCNT_dec (grp->sv2);
1968 grp->sv2 = newSVsv (callback); 2174 grp->sv2 = newSVsv (callback);
2175 grp->feed = aio_grp_feed;
1969 2176
1970 if (grp->int2 <= 0) 2177 if (grp->int2 <= 0)
1971 grp->int2 = 2; 2178 grp->int2 = 2;
1972 2179
1973 aio_grp_feed (grp); 2180 eio_grp_limit (grp, grp->int2);
1974} 2181}
1975 2182

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