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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC vs.
Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
27#include <limits.h> 16#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 17#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 18#include <sched.h>
32 19
33#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34# if __linux
35# include <sys/sendfile.h>
36# elif __freebsd
37# include <sys/socket.h>
38# include <sys/uio.h> 21# include <sys/mman.h>
39# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. 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
46#ifdef _WIN32
47
48 // perl overrides all those nice libc functions
49
50 #undef malloc
51 #undef free
52 #undef open
53 #undef read
54 #undef write
55 #undef send
56 #undef recv
57 #undef stat
58 #undef lstat
59 #undef fstat
60 #undef truncate
61 #undef ftruncate
62 #undef open
63 #undef link
64 #undef close
65 #undef unlink
66 #undef mkdir
67 #undef rmdir
68 #undef rename
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
79
80 #define EIO_STRUCT_STAT struct _stati64
81 #define EIO_STRUCT_STATI64
82
83#else
84
40# include <sys/socket.h> 85 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 86 #include <sys/select.h>
87 #include <unistd.h>
88 #include <utime.h>
89 #include <signal.h>
90
91 #define EIO_STRUCT_STAT Stat_t
92
93#endif
94
95/*****************************************************************************/
96
97#if __GNUC__ >= 3
98# define expect(expr,value) __builtin_expect ((expr),(value))
99#else
100# define expect(expr,value) (expr)
101#endif
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
43# else 144# else
44# error sendfile support requested but not available 145# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 146# endif
46#endif 147#endif
47 148
48/* used for struct dirent, AIX doesn't provide it */ 149/* defines all sorts of constants to 0 unless they are already defined */
49#ifndef NAME_MAX 150/* also provides const_iv_ and const_niv_ macros for them */
50# define NAME_MAX 4096 151#include "def0.h"
51#endif
52 152
53#ifndef PTHREAD_STACK_MIN 153#ifndef makedev
54/* care for broken platforms, e.g. windows */ 154# define makedev(maj,min) (((maj) << 8) | (min))
55# define PTHREAD_STACK_MIN 16384
56#endif
57
58#if __ia64
59# define STACKSIZE 65536
60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61# define STACKSIZE PTHREAD_STACK_MIN
62#else
63# define STACKSIZE 16384
64#endif
65
66/* wether word reads are potentially non-atomic.
67 * this is conservatice, likely most arches this runs
68 * on have atomic word read/writes.
69 */
70#ifndef WORDREAD_UNSAFE
71# if __i386 || __x86_64
72# define WORDREAD_UNSAFE 0
73# else
74# define WORDREAD_UNSAFE 1
75# endif 155#endif
156#ifndef major
157# define major(dev) ((dev) >> 8)
76#endif 158#endif
159#ifndef minor
160# define minor(dev) ((dev) & 0xff)
161#endif
77 162
78/* buffer size for various temporary buffers */ 163#if PAGESIZE <= 0
79#define AIO_BUFSIZE 65536 164# define PAGESIZE sysconf (_SC_PAGESIZE)
165#endif
80 166
81#define dBUF \ 167/*****************************************************************************/
82 char *aio_buf; \ 168
83 LOCK (wrklock); \ 169static void
84 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 170fiemap (eio_req *req)
85 UNLOCK (wrklock); \ 171{
86 if (!aio_buf) \ 172 req->result = -1;
173
174#if HAVE_FIEMAP
175 /* assume some c99 */
176 struct fiemap *fiemap = 0;
177 size_t end_offset;
178 int count = req->int3;
179
180 req->flags |= EIO_FLAG_PTR1_FREE;
181
182 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
183 /* increase in 3.5kb steps */
184 if (count < 0)
185 count = 8;
186
187 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
188 errno = ENOMEM;
189 if (!fiemap)
87 return -1; 190 return;
88 191
89enum { 192 req->ptr1 = fiemap;
90 REQ_QUIT,
91 REQ_OPEN, REQ_CLOSE,
92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
93 REQ_SENDFILE,
94 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95 REQ_FSYNC, REQ_FDATASYNC,
96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97 REQ_MKNOD, REQ_READDIR,
98 REQ_LINK, REQ_SYMLINK,
99 REQ_GROUP, REQ_NOP,
100 REQ_BUSY,
101};
102 193
103#define AIO_REQ_KLASS "IO::AIO::REQ" 194 fiemap->fm_start = req->offs;
104#define AIO_GRP_KLASS "IO::AIO::GRP" 195 fiemap->fm_length = req->size;
196 fiemap->fm_flags = req->int2;
197 fiemap->fm_extent_count = count;
105 198
106typedef struct aio_cb 199 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
107{ 200 return;
108 struct aio_cb *volatile next;
109 201
110 SV *data, *callback; 202 if (req->int3 >= 0 /* not autosizing */
111 SV *fh, *fh2; 203 || !fiemap->fm_mapped_extents /* no more extents */
112 void *dataptr, *data2ptr; 204 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
113 Stat_t *statdata; 205 goto done;
114 off_t offset;
115 size_t length;
116 ssize_t result;
117 206
118 STRLEN dataoffset; 207 /* else we have to loop -
119 int type; 208 * it would be tempting (actually I tried that first) to just query the
120 int fd, fd2; 209 * number of extents needed, but linux often feels like not returning all
121 int errorno; 210 * extents, without telling us it left any out. this complicates
122 mode_t mode; /* open */ 211 * this quite a bit.
212 */
123 213
124 unsigned char flags; 214 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125 unsigned char pri;
126 215
127 SV *self; /* the perl counterpart of this request, if any */ 216 for (;;)
128 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129} aio_cb;
130
131enum {
132 FLAG_CANCELLED = 0x01,
133};
134
135typedef aio_cb *aio_req;
136typedef aio_cb *aio_req_ornot;
137
138enum {
139 PRI_MIN = -4,
140 PRI_MAX = 4,
141
142 DEFAULT_PRI = 0,
143 PRI_BIAS = -PRI_MIN,
144 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145};
146
147static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149static unsigned int started, wanted;
150
151#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153#else
154# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155#endif
156
157#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160/* worker threads management */
161static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163typedef struct worker {
164 /* locked by wrklock */
165 struct worker *prev, *next;
166
167 pthread_t tid;
168
169 /* locked by reslock, reqlock or wrklock */
170 aio_req req; /* currently processed request */
171 void *dbuf;
172 DIR *dirp;
173} worker;
174
175static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177static void worker_clear (worker *wrk)
178{
179 if (wrk->dirp)
180 { 217 {
181 closedir (wrk->dirp); 218 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
182 wrk->dirp = 0; 219 char scratch[3072];
183 } 220 struct fiemap *incmap = (struct fiemap *)scratch;
184 221
185 if (wrk->dbuf) 222 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
186 { 223 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
187 free (wrk->dbuf); 224 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
188 wrk->dbuf = 0; 225 incmap->fm_flags = fiemap->fm_flags;
189 } 226 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
190}
191 227
192static void worker_free (worker *wrk) 228 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
193{
194 wrk->next->prev = wrk->prev;
195 wrk->prev->next = wrk->next;
196
197 free (wrk);
198}
199
200static volatile unsigned int nreqs, nready, npending;
201static volatile unsigned int max_outstanding = 0xffffffff;
202static int respipe [2];
203
204static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208#if WORDREAD_UNSAFE
209
210static unsigned int get_nready ()
211{
212 unsigned int retval;
213
214 LOCK (reqlock);
215 retval = nready;
216 UNLOCK (reqlock);
217
218 return retval;
219}
220
221static unsigned int get_npending ()
222{
223 unsigned int retval;
224
225 LOCK (reslock);
226 retval = npending;
227 UNLOCK (reslock);
228
229 return retval;
230}
231
232#else
233
234# define get_nready() nready
235# define get_npending() npending
236
237#endif
238
239/*
240 * a somewhat faster data structure might be nice, but
241 * with 8 priorities this actually needs <20 insns
242 * per shift, the most expensive operation.
243 */
244typedef struct {
245 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246 int size;
247} reqq;
248
249static reqq req_queue;
250static reqq res_queue;
251
252int reqq_push (reqq *q, aio_req req)
253{
254 int pri = req->pri;
255 req->next = 0;
256
257 if (q->qe[pri])
258 {
259 q->qe[pri]->next = req;
260 q->qe[pri] = req;
261 }
262 else
263 q->qe[pri] = q->qs[pri] = req;
264
265 return q->size++;
266}
267
268aio_req reqq_shift (reqq *q)
269{
270 int pri;
271
272 if (!q->size)
273 return 0; 229 return;
274 230
275 --q->size; 231 if (!incmap->fm_mapped_extents)
232 goto done;
276 233
277 for (pri = NUM_PRI; pri--; ) 234 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
278 { 235 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
279 aio_req req = q->qs[pri]; 236 errno = ENOMEM;
280
281 if (req) 237 if (!fiemap)
238 return;
239
240 req->ptr1 = fiemap;
241
242 for (count = 0; count < incmap->fm_mapped_extents; ++count)
282 { 243 {
283 if (!(q->qs[pri] = req->next)) 244 struct fiemap_extent *e = incmap->fm_extents + count;
284 q->qe[pri] = 0;
285 245
286 return req; 246 if (e->fe_logical + e->fe_length >= end_offset)
247 goto done;
248
249 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
250
251 if (e->fe_flags & FIEMAP_EXTENT_LAST)
252 goto done;
253
287 } 254 }
288 } 255 }
289 256
290 abort (); 257done:
291} 258 req->result = 0;
292 259
293static int poll_cb (int max); 260#else
294static void req_invoke (aio_req req); 261 errno = ENOSYS;
262#endif
263}
264
265/*****************************************************************************/
266
267enum {
268 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
269};
270
271typedef eio_req *aio_req;
272typedef eio_req *aio_req_ornot;
273typedef eio_wd aio_wd;
274
275static SV *on_next_submit;
276static int next_pri = EIO_PRI_DEFAULT;
277static int max_outstanding;
278
279static s_epipe respipe;
280
295static void req_free (aio_req req); 281static void req_destroy (aio_req req);
296static void req_cancel (aio_req req); 282static void req_cancel (aio_req req);
297 283
284static void
285want_poll (void)
286{
287 /* write a dummy byte to the pipe so fh becomes ready */
288 s_epipe_signal (&respipe);
289}
290
291static void
292done_poll (void)
293{
294 /* read any signals sent by the worker threads */
295 s_epipe_drain (&respipe);
296}
297
298/* must be called at most once */ 298/* must be called at most once */
299static SV *req_sv (aio_req req, const char *klass) 299static SV *
300req_sv (aio_req req, HV *stash)
300{ 301{
301 if (!req->self) 302 if (!req->self)
302 { 303 {
303 req->self = (SV *)newHV (); 304 req->self = (SV *)newHV ();
304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 305 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305 } 306 }
306 307
307 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 308 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308} 309}
309 310
310static aio_req SvAIO_REQ (SV *sv) 311static SV *
312newSVaio_wd (aio_wd wd)
313{
314 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
315}
316
317static aio_req
318SvAIO_REQ (SV *sv)
311{ 319{
312 MAGIC *mg; 320 MAGIC *mg;
313 321
314 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 322 if (!SvROK (sv)
323 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
324 || (SvSTASH (SvRV (sv)) != aio_grp_stash
325 && SvSTASH (SvRV (sv)) != aio_req_stash
326 && !sv_derived_from (sv, "IO::AIO::REQ")))
315 croak ("object of class " AIO_REQ_KLASS " expected"); 327 croak ("object of class IO::AIO::REQ expected");
316 328
317 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 329 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318 330
319 return mg ? (aio_req)mg->mg_ptr : 0; 331 return mg ? (aio_req)mg->mg_ptr : 0;
320} 332}
321 333
334static aio_wd
335SvAIO_WD (SV *sv)
336{
337 if (!SvROK (sv)
338 || SvTYPE (SvRV (sv)) != SVt_PVMG
339 || SvSTASH (SvRV (sv)) != aio_wd_stash)
340 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
341
342 return (aio_wd)(long)SvIVX (SvRV (sv));
343}
344
345static SV *
346newmortalFH (int fd, int flags)
347{
348 if (fd < 0)
349 return &PL_sv_undef;
350
351 GV *gv = (GV *)sv_newmortal ();
352 char sym[64];
353 int symlen;
354
355 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
356 gv_init (gv, aio_stash, sym, symlen, 0);
357
358 symlen = snprintf (
359 sym,
360 sizeof (sym),
361 "%s&=%d",
362 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
363 fd
364 );
365
366 return do_open (gv, sym, symlen, 0, 0, 0, 0)
367 ? (SV *)gv : &PL_sv_undef;
368}
369
370static void
322static void aio_grp_feed (aio_req grp) 371aio_grp_feed (aio_req grp)
323{ 372{
324 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 373 if (grp->sv2 && SvOK (grp->sv2))
325 { 374 {
326 int old_len = grp->length;
327
328 if (grp->fh2 && SvOK (grp->fh2))
329 {
330 dSP; 375 dSP;
331 376
332 ENTER; 377 ENTER;
333 SAVETMPS; 378 SAVETMPS;
334 PUSHMARK (SP); 379 PUSHMARK (SP);
335 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 380 XPUSHs (req_sv (grp, aio_grp_stash));
336 PUTBACK; 381 PUTBACK;
337 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 382 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338 SPAGAIN; 383 SPAGAIN;
339 FREETMPS; 384 FREETMPS;
340 LEAVE; 385 LEAVE;
341 }
342
343 /* stop if no progress has been made */
344 if (old_len == grp->length)
345 {
346 SvREFCNT_dec (grp->fh2);
347 grp->fh2 = 0;
348 break;
349 }
350 } 386 }
351} 387}
352 388
353static void aio_grp_dec (aio_req grp) 389static void
390req_submit (eio_req *req)
354{ 391{
355 --grp->length; 392 eio_submit (req);
356 393
357 /* call feeder, if applicable */ 394 if (expect_false (on_next_submit))
358 aio_grp_feed (grp);
359
360 /* finish, if done */
361 if (!grp->length && grp->fd)
362 { 395 {
363 req_invoke (grp); 396 dSP;
364 req_free (grp); 397 SV *cb = sv_2mortal (on_next_submit);
398
399 on_next_submit = 0;
400
401 PUSHMARK (SP);
402 PUTBACK;
403 call_sv (cb, G_DISCARD | G_EVAL);
365 } 404 }
366} 405}
367 406
407static int
368static void req_invoke (aio_req req) 408req_invoke (eio_req *req)
369{ 409{
370 dSP; 410 if (req->flags & FLAG_SV2_RO_OFF)
411 SvREADONLY_off (req->sv2);
371 412
372 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 413 if (!EIO_CANCELLED (req) && req->callback)
373 { 414 {
415 dSP;
416 static SV *sv_result_cache; /* caches the result integer SV */
417 SV *sv_result;
418
374 ENTER; 419 ENTER;
375 SAVETMPS; 420 SAVETMPS;
376 PUSHMARK (SP); 421 PUSHMARK (SP);
377 EXTEND (SP, 1); 422 EXTEND (SP, 1);
378 423
424 /* do not recreate the result IV from scratch each time */
425 if (expect_true (sv_result_cache))
426 {
427 sv_result = sv_result_cache; sv_result_cache = 0;
428 SvIV_set (sv_result, req->result);
429 SvIOK_only (sv_result);
430 }
431 else
432 {
433 sv_result = newSViv (req->result);
434 SvREADONLY_on (sv_result);
435 }
436
379 switch (req->type) 437 switch (req->type)
380 { 438 {
439 case EIO_WD_OPEN:
440 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
441 break;
442
381 case REQ_READDIR: 443 case EIO_READDIR:
382 { 444 {
383 SV *rv = &PL_sv_undef; 445 SV *rv = &PL_sv_undef;
384 446
385 if (req->result >= 0) 447 if (req->result >= 0)
386 { 448 {
387 int i; 449 int i;
388 char *buf = req->data2ptr; 450 char *names = (char *)req->ptr2;
451 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389 AV *av = newAV (); 452 AV *av = newAV ();
390 453
391 av_extend (av, req->result - 1); 454 av_extend (av, req->result - 1);
392 455
393 for (i = 0; i < req->result; ++i) 456 for (i = 0; i < req->result; ++i)
394 { 457 {
395 SV *sv = newSVpv (buf, 0); 458 if (req->int1 & EIO_READDIR_DENTS)
459 {
460 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396 461
462 if (req->int1 & EIO_READDIR_CUSTOM2)
463 {
464 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
465 AV *avent = newAV ();
466
467 av_extend (avent, 2);
468
469 if (!sv_type [ent->type])
470 {
471 sv_type [ent->type] = newSViv (ent->type);
472 SvREADONLY_on (sv_type [ent->type]);
473 }
474
475 av_store (avent, 0, namesv);
476 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
477 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
478
479 av_store (av, i, newRV_noinc ((SV *)avent));
480 }
481 else
397 av_store (av, i, sv); 482 av_store (av, i, namesv);
483
484 ++ent;
485 }
486 else
487 {
488 SV *name = newSVpv (names, 0);
489 av_store (av, i, name);
398 buf += SvCUR (sv) + 1; 490 names += SvCUR (name) + 1;
491 }
399 } 492 }
400 493
401 rv = sv_2mortal (newRV_noinc ((SV *)av)); 494 rv = sv_2mortal (newRV_noinc ((SV *)av));
402 } 495 }
403 496
404 PUSHs (rv); 497 PUSHs (rv);
498
499 if (req->int1 & EIO_READDIR_CUSTOM1)
500 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405 } 501 }
406 break; 502 break;
407 503
408 case REQ_OPEN: 504 case EIO_OPEN:
505 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
506 break;
507
508 case EIO_STATVFS:
509 case EIO_FSTATVFS:
409 { 510 {
410 /* convert fd to fh */ 511 SV *rv = &PL_sv_undef;
411 SV *fh; 512
513#ifndef _WIN32
514 if (req->result >= 0)
515 {
516 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
517 HV *hv = newHV ();
518 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
519 * chooses to make it a struct.
520 */
521 unsigned long fsid = 0;
522 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
412 523
413 PUSHs (sv_2mortal (newSViv (req->result))); 524 rv = sv_2mortal (newRV_noinc ((SV *)hv));
414 PUTBACK;
415 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
416 SPAGAIN;
417 525
418 fh = SvREFCNT_inc (POPs); 526 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
527 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
528 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
529 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
530 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
531 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
532 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
533 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
534 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
535 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
536 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
537 }
538#endif
419 539
420 PUSHMARK (SP); 540 PUSHs (rv);
421 XPUSHs (sv_2mortal (fh));
422 } 541 }
542
423 break; 543 break;
424 544
425 case REQ_GROUP: 545 case EIO_GROUP:
426 req->fd = 2; /* mark group as finished */ 546 req->int1 = 2; /* mark group as finished */
427 547
428 if (req->data) 548 if (req->sv1)
429 { 549 {
430 int i; 550 int i;
431 AV *av = (AV *)req->data; 551 AV *av = (AV *)req->sv1;
432 552
433 EXTEND (SP, AvFILL (av) + 1); 553 EXTEND (SP, AvFILL (av) + 1);
434 for (i = 0; i <= AvFILL (av); ++i) 554 for (i = 0; i <= AvFILL (av); ++i)
435 PUSHs (*av_fetch (av, i, 0)); 555 PUSHs (*av_fetch (av, i, 0));
436 } 556 }
437 break; 557 break;
438 558
439 case REQ_NOP: 559 case EIO_NOP:
440 case REQ_BUSY: 560 case EIO_BUSY:
441 break; 561 break;
442 562
563 case EIO_READLINK:
564 case EIO_REALPATH:
565 if (req->result > 0)
566 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
567 break;
568
569 case EIO_STAT:
570 case EIO_LSTAT:
571 case EIO_FSTAT:
572 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
573
574 if (!(PL_laststatval = req->result))
575 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
576 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
577
578 PUSHs (sv_result);
579 break;
580
581 case EIO_SEEK:
582 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
583 break;
584
585 case EIO_READ:
586 {
587 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
588 *SvEND (req->sv2) = 0;
589 SvPOK_only (req->sv2);
590 SvSETMAGIC (req->sv2);
591 PUSHs (sv_result);
592 }
593 break;
594
595 case EIO_CUSTOM:
596 if (req->feed == fiemap)
597 {
598#if HAVE_FIEMAP
599 if (!req->result)
600 {
601 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
602
603 if (fiemap->fm_extent_count)
604 {
605 AV *av = newAV ();
606 int i;
607
608 while (fiemap->fm_mapped_extents)
609 {
610 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
611 AV *ext_av = newAV ();
612
613 av_store (ext_av, 3, newSVuv (extent->fe_flags));
614 av_store (ext_av, 2, newSVval64 (extent->fe_length));
615 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
616 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
617
618 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
619 }
620
621 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
622 }
623 else
624 {
625 SvIV_set (sv_result, fiemap->fm_mapped_extents);
626 PUSHs (sv_result);
627 }
628 }
629#endif
630 }
631 else
632 PUSHs (sv_result);
633 break;
634
635 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
636 if (req->result > 0)
637 SvIV_set (sv_result, 0);
638 /* FALLTHROUGH */
639
443 default: 640 default:
444 PUSHs (sv_2mortal (newSViv (req->result))); 641 PUSHs (sv_result);
445 break; 642 break;
446 } 643 }
447 644
448 errno = req->errorno; 645 errno = req->errorno;
449 646
450 PUTBACK; 647 PUTBACK;
451 call_sv (req->callback, G_VOID | G_EVAL); 648 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452 SPAGAIN; 649 SPAGAIN;
650
651 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
652 SvREFCNT_dec (sv_result);
653 else
654 sv_result_cache = sv_result;
453 655
454 FREETMPS; 656 FREETMPS;
455 LEAVE; 657 LEAVE;
658
659 PUTBACK;
456 } 660 }
457 661
458 if (req->grp) 662 return !!SvTRUE (ERRSV);
459 {
460 aio_req grp = req->grp;
461
462 /* unlink request */
463 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466 if (grp->grp_first == req)
467 grp->grp_first = req->grp_next;
468
469 aio_grp_dec (grp);
470 }
471
472 if (SvTRUE (ERRSV))
473 {
474 req_free (req);
475 croak (0);
476 }
477} 663}
478 664
479static void req_free (aio_req req) 665static void
666req_destroy (aio_req req)
480{ 667{
481 if (req->self) 668 if (req->self)
482 { 669 {
483 sv_unmagic (req->self, PERL_MAGIC_ext); 670 sv_unmagic (req->self, PERL_MAGIC_ext);
484 SvREFCNT_dec (req->self); 671 SvREFCNT_dec (req->self);
485 } 672 }
486 673
487 SvREFCNT_dec (req->data);
488 SvREFCNT_dec (req->fh); 674 SvREFCNT_dec (req->sv1);
489 SvREFCNT_dec (req->fh2); 675 SvREFCNT_dec (req->sv2);
676 SvREFCNT_dec (req->sv3);
677 SvREFCNT_dec (req->sv4);
490 SvREFCNT_dec (req->callback); 678 SvREFCNT_dec (req->callback);
491 Safefree (req->statdata);
492 679
493 if (req->type == REQ_READDIR)
494 free (req->data2ptr);
495
496 Safefree (req); 680 free (req);
497} 681}
498 682
683static void
499static void req_cancel_subs (aio_req grp) 684req_cancel_subs (aio_req grp)
500{ 685{
501 aio_req sub;
502
503 if (grp->type != REQ_GROUP) 686 if (grp->type != EIO_GROUP)
504 return; 687 return;
505 688
506 SvREFCNT_dec (grp->fh2); 689 SvREFCNT_dec (grp->sv2);
507 grp->fh2 = 0; 690 grp->sv2 = 0;
508 691
509 for (sub = grp->grp_first; sub; sub = sub->grp_next) 692 eio_grp_cancel (grp);
510 req_cancel (sub);
511} 693}
512 694
513static void req_cancel (aio_req req) 695static void ecb_cold
696create_respipe (void)
514{ 697{
515 req->flags |= FLAG_CANCELLED; 698 if (s_epipe_renew (&respipe))
516 699 croak ("IO::AIO: unable to initialize result pipe");
517 req_cancel_subs (req);
518} 700}
519 701
520static void *aio_proc(void *arg); 702static void
521 703poll_wait (void)
522static void start_thread (void)
523{ 704{
524 sigset_t fullsigset, oldsigset;
525 pthread_attr_t attr;
526
527 worker *wrk = calloc (1, sizeof (worker));
528
529 if (!wrk)
530 croak ("unable to allocate worker thread data");
531
532 pthread_attr_init (&attr);
533 pthread_attr_setstacksize (&attr, STACKSIZE);
534 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535#ifdef PTHREAD_SCOPE_PROCESS
536 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537#endif
538
539 sigfillset (&fullsigset);
540
541 LOCK (wrklock);
542 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545 {
546 wrk->prev = &wrk_first;
547 wrk->next = wrk_first.next;
548 wrk_first.next->prev = wrk;
549 wrk_first.next = wrk;
550 ++started;
551 }
552 else
553 free (wrk);
554
555 sigprocmask (SIG_SETMASK, &oldsigset, 0);
556 UNLOCK (wrklock);
557}
558
559static void maybe_start_thread ()
560{
561#if 0
562 static struct timeval last;
563 struct timeval diff, now;
564#endif
565
566 if (started >= wanted)
567 return;
568
569 if (nready <= nreqs - get_nready () - get_npending ())
570 return;
571
572#if 0
573 gettimeofday (&now, 0);
574
575 diff.tv_sec = now.tv_sec - last.tv_sec;
576 diff.tv_usec = now.tv_usec - last.tv_usec;
577
578 if (diff.tv_usec < 0)
579 {
580 --diff.tv_sec;
581 diff.tv_usec += 1000000;
582 }
583
584 if (!diff.tv_sec && diff.tv_usec < 10000)
585 return;
586
587 last = now;
588#endif
589
590 start_thread ();
591}
592
593static void req_send (aio_req req)
594{
595 ++nreqs;
596
597 LOCK (reqlock);
598 ++nready;
599 reqq_push (&req_queue, req);
600 pthread_cond_signal (&reqwait);
601 UNLOCK (reqlock);
602
603 maybe_start_thread ();
604}
605
606static void end_thread (void)
607{
608 aio_req req;
609
610 Newz (0, req, 1, aio_cb);
611
612 req->type = REQ_QUIT;
613 req->pri = PRI_MAX + PRI_BIAS;
614
615 LOCK (reqlock);
616 reqq_push (&req_queue, req);
617 pthread_cond_signal (&reqwait);
618 UNLOCK (reqlock);
619
620 LOCK (wrklock);
621 --started;
622 UNLOCK (wrklock);
623}
624
625static void min_parallel (int nthreads)
626{
627 if (wanted < nthreads)
628 wanted = nthreads;
629}
630
631static void max_parallel (int nthreads)
632{
633 if (wanted > nthreads)
634 wanted = nthreads;
635
636 while (started > wanted)
637 end_thread ();
638}
639
640static void poll_wait ()
641{
642 fd_set rfd;
643
644 while (nreqs) 705 while (eio_nreqs ())
645 { 706 {
646 int size; 707 int size;
647 if (WORDREAD_UNSAFE) LOCK (reslock); 708
709 X_LOCK (EIO_POOL->reslock);
648 size = res_queue.size; 710 size = EIO_POOL->res_queue.size;
649 if (WORDREAD_UNSAFE) UNLOCK (reslock); 711 X_UNLOCK (EIO_POOL->reslock);
650 712
651 if (size) 713 if (size)
652 return; 714 return;
653 715
654 maybe_start_thread (); 716 etp_maybe_start_thread (EIO_POOL);
655 717
656 FD_ZERO(&rfd); 718 s_epipe_wait (&respipe);
657 FD_SET(respipe [0], &rfd);
658
659 select (respipe [0] + 1, &rfd, 0, 0, 0);
660 } 719 }
661} 720}
662 721
663static int poll_cb (int max) 722static int
723poll_cb (void)
664{ 724{
665 dSP;
666 int count = 0;
667 int do_croak = 0;
668 aio_req req;
669
670 for (;;) 725 for (;;)
671 { 726 {
672 while (max <= 0 || count < max) 727 int res = eio_poll ();
728
729 if (res > 0)
730 croak (0);
731
732 if (!max_outstanding || max_outstanding > eio_nreqs ())
733 return res;
734
735 poll_wait ();
736 }
737}
738
739static void ecb_cold
740reinit (void)
741{
742 create_respipe ();
743
744 if (eio_init (want_poll, done_poll) < 0)
745 croak ("IO::AIO: unable to initialise eio library");
746}
747
748/*****************************************************************************/
749
750#if !_POSIX_MAPPED_FILES
751# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
752# define munmap(addr,length) EIO_ENOSYS ()
753#endif
754
755#if !_POSIX_MEMORY_PROTECTION
756# define mprotect(addr,len,prot) EIO_ENOSYS ()
757#endif
758
759#define MMAP_MAGIC PERL_MAGIC_ext
760
761static int ecb_cold
762mmap_free (pTHX_ SV *sv, MAGIC *mg)
763{
764 int old_errno = errno;
765 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
766 errno = old_errno;
767
768 mg->mg_obj = 0; /* just in case */
769
770 SvREADONLY_off (sv);
771
772 if (SvPVX (sv) != mg->mg_ptr)
773 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
774
775 SvCUR_set (sv, 0);
776 SvPVX (sv) = 0;
777 SvOK_off (sv);
778
779 return 0;
780}
781
782static MGVTBL mmap_vtbl = {
783 0, 0, 0, 0, mmap_free
784};
785
786/*****************************************************************************/
787
788static SV *
789get_cb (SV *cb_sv)
790{
791 SvGETMAGIC (cb_sv);
792 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
793}
794
795static aio_req ecb_noinline
796dreq (SV *callback)
797{
798 SV *cb_cv;
799 aio_req req;
800 int req_pri = next_pri;
801 next_pri = EIO_PRI_DEFAULT;
802
803 cb_cv = get_cb (callback);
804
805 req = calloc (sizeof (*req), 1);
806 if (!req)
807 croak ("out of memory during eio_req allocation");
808
809 req->callback = SvREFCNT_inc (cb_cv);
810 req->pri = req_pri;
811
812 return req;
813}
814
815#define dREQ \
816 aio_req req = dreq (callback); \
817
818#define REQ_SEND \
819 PUTBACK; \
820 req_submit (req); \
821 SPAGAIN; \
822 \
823 if (GIMME_V != G_VOID) \
824 XPUSHs (req_sv (req, aio_req_stash));
825
826ecb_inline void
827req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
828{
829 if (expect_false (SvROK (path)))
830 {
831 SV *rv = SvRV (path);
832 SV *wdob;
833
834 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
673 { 835 {
674 maybe_start_thread (); 836 path = AvARRAY (rv)[1];
837 wdob = AvARRAY (rv)[0];
675 838
676 LOCK (reslock); 839 if (SvOK (wdob))
677 req = reqq_shift (&res_queue);
678
679 if (req)
680 { 840 {
681 --npending; 841 *wd = SvAIO_WD (wdob);
682 842 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
683 if (!res_queue.size)
684 {
685 /* read any signals sent by the worker threads */
686 char buf [32];
687 while (read (respipe [0], buf, 32) == 32)
688 ;
689 }
690 }
691
692 UNLOCK (reslock);
693
694 if (!req)
695 break;
696
697 --nreqs;
698
699 if (req->type == REQ_GROUP && req->length)
700 {
701 req->fd = 1; /* mark request as delayed */
702 continue;
703 } 843 }
704 else 844 else
705 { 845 *wd = EIO_INVALID_WD;
706 if (req->type == REQ_READ)
707 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
708
709 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
710 SvREADONLY_off (req->data);
711
712 if (req->statdata)
713 {
714 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
715 PL_laststatval = req->result;
716 PL_statcache = *(req->statdata);
717 }
718
719 req_invoke (req);
720
721 count++;
722 }
723
724 req_free (req);
725 } 846 }
847 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
848 {
849 *wd = (aio_wd)(long)SvIVX (rv);
850 *wdsv = SvREFCNT_inc_NN (rv);
851 *ptr = ".";
852 return; /* path set to "." */
853 }
854 else
855 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
856 }
726 857
727 if (nreqs <= max_outstanding) 858 *pathsv = newSVsv (path);
859 *ptr = SvPVbyte_nolen (*pathsv);
860}
861
862static void ecb_noinline
863req_set_path1 (aio_req req, SV *path)
864{
865 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
866}
867
868static void ecb_noinline
869req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
870{
871 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
872
873 switch (SvTYPE (rv))
874 {
875 case SVt_PVIO:
876 case SVt_PVLV:
877 case SVt_PVGV:
878 req->type = type_fh;
879 req->sv1 = newSVsv (fh_or_path);
880 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
728 break; 881 break;
729 882
730 poll_wait (); 883 default:
731 884 req->type = type_path;
732 max = 0; 885 req_set_path1 (req, fh_or_path);
886 break;
733 } 887 }
734
735 return count;
736} 888}
737 889
738static void create_pipe () 890XS(boot_IO__AIO) ecb_cold;
739{
740 if (pipe (respipe))
741 croak ("unable to initialize result pipe");
742 891
743 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
744 croak ("cannot set result pipe to nonblocking mode");
745
746 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
747 croak ("cannot set result pipe to nonblocking mode");
748}
749
750/*****************************************************************************/
751/* work around various missing functions */
752
753#if !HAVE_PREADWRITE
754# define pread aio_pread
755# define pwrite aio_pwrite
756
757/*
758 * make our pread/pwrite safe against themselves, but not against
759 * normal read/write by using a mutex. slows down execution a lot,
760 * but that's your problem, not mine.
761 */
762static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
763
764static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
765{
766 ssize_t res;
767 off_t ooffset;
768
769 LOCK (preadwritelock);
770 ooffset = lseek (fd, 0, SEEK_CUR);
771 lseek (fd, offset, SEEK_SET);
772 res = read (fd, buf, count);
773 lseek (fd, ooffset, SEEK_SET);
774 UNLOCK (preadwritelock);
775
776 return res;
777}
778
779static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
780{
781 ssize_t res;
782 off_t ooffset;
783
784 LOCK (preadwritelock);
785 ooffset = lseek (fd, 0, SEEK_CUR);
786 lseek (fd, offset, SEEK_SET);
787 res = write (fd, buf, count);
788 lseek (fd, offset, SEEK_SET);
789 UNLOCK (preadwritelock);
790
791 return res;
792}
793#endif
794
795#if !HAVE_FDATASYNC
796# define fdatasync fsync
797#endif
798
799#if !HAVE_READAHEAD
800# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
801
802static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
803{
804 dBUF;
805
806 while (count > 0)
807 {
808 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
809
810 pread (fd, aio_buf, len, offset);
811 offset += len;
812 count -= len;
813 }
814
815 errno = 0;
816}
817
818#endif
819
820#if !HAVE_READDIR_R
821# define readdir_r aio_readdir_r
822
823static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
824
825static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
826{
827 struct dirent *e;
828 int errorno;
829
830 LOCK (readdirlock);
831
832 e = readdir (dirp);
833 errorno = errno;
834
835 if (e)
836 {
837 *res = ent;
838 strcpy (ent->d_name, e->d_name);
839 }
840 else
841 *res = 0;
842
843 UNLOCK (readdirlock);
844
845 errno = errorno;
846 return e ? 0 : -1;
847}
848#endif
849
850/* sendfile always needs emulation */
851static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
852{
853 ssize_t res;
854
855 if (!count)
856 return 0;
857
858#if HAVE_SENDFILE
859# if __linux
860 res = sendfile (ofd, ifd, &offset, count);
861
862# elif __freebsd
863 /*
864 * Of course, the freebsd sendfile is a dire hack with no thoughts
865 * wasted on making it similar to other I/O functions.
866 */
867 {
868 off_t sbytes;
869 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
870
871 if (res < 0 && sbytes)
872 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
873 res = sbytes;
874 }
875
876# elif __hpux
877 res = sendfile (ofd, ifd, offset, count, 0, 0);
878
879# elif __solaris
880 {
881 struct sendfilevec vec;
882 size_t sbytes;
883
884 vec.sfv_fd = ifd;
885 vec.sfv_flag = 0;
886 vec.sfv_off = offset;
887 vec.sfv_len = count;
888
889 res = sendfilev (ofd, &vec, 1, &sbytes);
890
891 if (res < 0 && sbytes)
892 res = sbytes;
893 }
894
895# endif
896#else
897 res = -1;
898 errno = ENOSYS;
899#endif
900
901 if (res < 0
902 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
903#if __solaris
904 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
905#endif
906 )
907 )
908 {
909 /* emulate sendfile. this is a major pain in the ass */
910 dBUF;
911
912 res = 0;
913
914 while (count)
915 {
916 ssize_t cnt;
917
918 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
919
920 if (cnt <= 0)
921 {
922 if (cnt && !res) res = -1;
923 break;
924 }
925
926 cnt = write (ofd, aio_buf, cnt);
927
928 if (cnt <= 0)
929 {
930 if (cnt && !res) res = -1;
931 break;
932 }
933
934 offset += cnt;
935 res += cnt;
936 count -= cnt;
937 }
938 }
939
940 return res;
941}
942
943/* read a full directory */
944static void scandir_ (aio_req req, worker *self)
945{
946 DIR *dirp;
947 union
948 {
949 struct dirent d;
950 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
951 } *u;
952 struct dirent *entp;
953 char *name, *names;
954 int memlen = 4096;
955 int memofs = 0;
956 int res = 0;
957 int errorno;
958
959 LOCK (wrklock);
960 self->dirp = dirp = opendir (req->dataptr);
961 self->dbuf = u = malloc (sizeof (*u));
962 req->data2ptr = names = malloc (memlen);
963 UNLOCK (wrklock);
964
965 if (dirp && u && names)
966 for (;;)
967 {
968 errno = 0;
969 readdir_r (dirp, &u->d, &entp);
970
971 if (!entp)
972 break;
973
974 name = entp->d_name;
975
976 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
977 {
978 int len = strlen (name) + 1;
979
980 res++;
981
982 while (memofs + len > memlen)
983 {
984 memlen *= 2;
985 LOCK (wrklock);
986 req->data2ptr = names = realloc (names, memlen);
987 UNLOCK (wrklock);
988
989 if (!names)
990 break;
991 }
992
993 memcpy (names + memofs, name, len);
994 memofs += len;
995 }
996 }
997
998 if (errno)
999 res = -1;
1000
1001 req->result = res;
1002}
1003
1004/*****************************************************************************/
1005
1006static void *aio_proc (void *thr_arg)
1007{
1008 aio_req req;
1009 worker *self = (worker *)thr_arg;
1010
1011 for (;;)
1012 {
1013 LOCK (reqlock);
1014
1015 for (;;)
1016 {
1017 self->req = req = reqq_shift (&req_queue);
1018
1019 if (req)
1020 break;
1021
1022 pthread_cond_wait (&reqwait, &reqlock);
1023 }
1024
1025 --nready;
1026
1027 UNLOCK (reqlock);
1028
1029 errno = 0; /* strictly unnecessary */
1030
1031 if (!(req->flags & FLAG_CANCELLED))
1032 switch (req->type)
1033 {
1034 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1035 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1036
1037 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1038 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1039
1040 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1041 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1042 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1043
1044 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1045 case REQ_CLOSE: req->result = close (req->fd); break;
1046 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1047 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1048 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1049 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1050 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1051 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1052
1053 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1054 case REQ_FSYNC: req->result = fsync (req->fd); break;
1055 case REQ_READDIR: scandir_ (req, self); break;
1056
1057 case REQ_BUSY:
1058 {
1059 struct timeval tv;
1060
1061 tv.tv_sec = req->fd;
1062 tv.tv_usec = req->fd2;
1063
1064 req->result = select (0, 0, 0, 0, &tv);
1065 }
1066
1067 case REQ_GROUP:
1068 case REQ_NOP:
1069 break;
1070
1071 case REQ_QUIT:
1072 LOCK (wrklock);
1073 worker_free (self);
1074 --started;
1075 UNLOCK (wrklock);
1076 return 0;
1077
1078 default:
1079 req->result = ENOSYS;
1080 break;
1081 }
1082
1083 req->errorno = errno;
1084
1085 LOCK (reslock);
1086
1087 ++npending;
1088
1089 if (!reqq_push (&res_queue, req))
1090 /* write a dummy byte to the pipe so fh becomes ready */
1091 write (respipe [1], &respipe, 1);
1092
1093 self->req = 0;
1094 worker_clear (self);
1095
1096 UNLOCK (reslock);
1097 }
1098}
1099
1100/*****************************************************************************/
1101
1102static void atfork_prepare (void)
1103{
1104 LOCK (wrklock);
1105 LOCK (reqlock);
1106 LOCK (reslock);
1107#if !HAVE_PREADWRITE
1108 LOCK (preadwritelock);
1109#endif
1110#if !HAVE_READDIR_R
1111 LOCK (readdirlock);
1112#endif
1113}
1114
1115static void atfork_parent (void)
1116{
1117#if !HAVE_READDIR_R
1118 UNLOCK (readdirlock);
1119#endif
1120#if !HAVE_PREADWRITE
1121 UNLOCK (preadwritelock);
1122#endif
1123 UNLOCK (reslock);
1124 UNLOCK (reqlock);
1125 UNLOCK (wrklock);
1126}
1127
1128static void atfork_child (void)
1129{
1130 aio_req prv;
1131
1132 while (prv = reqq_shift (&req_queue))
1133 req_free (prv);
1134
1135 while (prv = reqq_shift (&res_queue))
1136 req_free (prv);
1137
1138 while (wrk_first.next != &wrk_first)
1139 {
1140 worker *wrk = wrk_first.next;
1141
1142 if (wrk->req)
1143 req_free (wrk->req);
1144
1145 worker_clear (wrk);
1146 worker_free (wrk);
1147 }
1148
1149 started = 0;
1150 nreqs = 0;
1151
1152 close (respipe [0]);
1153 close (respipe [1]);
1154 create_pipe ();
1155
1156 atfork_parent ();
1157}
1158
1159#define dREQ \
1160 aio_req req; \
1161 int req_pri = next_pri; \
1162 next_pri = DEFAULT_PRI + PRI_BIAS; \
1163 \
1164 if (SvOK (callback) && !SvROK (callback)) \
1165 croak ("callback must be undef or of reference type"); \
1166 \
1167 Newz (0, req, 1, aio_cb); \
1168 if (!req) \
1169 croak ("out of memory during aio_req allocation"); \
1170 \
1171 req->callback = newSVsv (callback); \
1172 req->pri = req_pri
1173
1174#define REQ_SEND \
1175 req_send (req); \
1176 \
1177 if (GIMME_V != G_VOID) \
1178 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1179
1180MODULE = IO::AIO PACKAGE = IO::AIO 892MODULE = IO::AIO PACKAGE = IO::AIO
1181 893
1182PROTOTYPES: ENABLE 894PROTOTYPES: ENABLE
1183 895
1184BOOT: 896BOOT:
1185{ 897{
898 static const struct {
899 const char *name;
900 IV iv;
901 } *civ, const_iv[] = {
902# define const_niv(name, value) { # name, (IV) value },
903# define const_iv(name) { # name, (IV) name },
904# define const_eio(name) { # name, (IV) EIO_ ## name },
905
906 /* you have to re-run ./gendef0 after adding/removing any constants here */
907 /* the first block can be undef if missing */
908 const_iv (ENOSYS)
909 const_iv (EXDEV)
910 const_iv (EBADR)
911
912 /* for lseek */
913 const_iv (SEEK_DATA)
914 const_iv (SEEK_HOLE)
915
916 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
917 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
918 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
919 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
920 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
921 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
922
923 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
924 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
925 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
926 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
927 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
928 const_niv (MADV_FREE , POSIX_MADV_FREE)
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 (FIEMAP_FLAG_SYNC)
1001 const_iv (FIEMAP_FLAG_XATTR)
1002 const_iv (FIEMAP_FLAGS_COMPAT)
1003 const_iv (FIEMAP_EXTENT_LAST)
1004 const_iv (FIEMAP_EXTENT_UNKNOWN)
1005 const_iv (FIEMAP_EXTENT_DELALLOC)
1006 const_iv (FIEMAP_EXTENT_ENCODED)
1007 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1008 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1009 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1010 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1011 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1012 const_iv (FIEMAP_EXTENT_MERGED)
1013 const_iv (FIEMAP_EXTENT_SHARED)
1014
1015 const_iv (SPLICE_F_MOVE)
1016 const_iv (SPLICE_F_NONBLOCK)
1017 const_iv (SPLICE_F_MORE)
1018 const_iv (SPLICE_F_GIFT)
1019
1020 /* these are libeio constants, and are independent of gendef0 */
1021 const_eio (SEEK_SET)
1022 const_eio (SEEK_CUR)
1023 const_eio (SEEK_END)
1024
1025 const_eio (MCL_FUTURE)
1026 const_eio (MCL_CURRENT)
1027
1028 const_eio (MS_ASYNC)
1029 const_eio (MS_INVALIDATE)
1030 const_eio (MS_SYNC)
1031
1032 const_eio (MT_MODIFY)
1033
1034 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1035 const_eio (SYNC_FILE_RANGE_WRITE)
1036 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1037
1038 const_eio (FALLOC_FL_KEEP_SIZE)
1039 const_eio (FALLOC_FL_PUNCH_HOLE)
1040 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1041 const_eio (FALLOC_FL_ZERO_RANGE)
1042
1043 const_eio (READDIR_DENTS)
1044 const_eio (READDIR_DIRS_FIRST)
1045 const_eio (READDIR_STAT_ORDER)
1046 const_eio (READDIR_FOUND_UNKNOWN)
1047
1048 const_eio (DT_UNKNOWN)
1049 const_eio (DT_FIFO)
1050 const_eio (DT_CHR)
1051 const_eio (DT_DIR)
1052 const_eio (DT_BLK)
1053 const_eio (DT_REG)
1054 const_eio (DT_LNK)
1055 const_eio (DT_SOCK)
1056 const_eio (DT_WHT)
1057 };
1058
1186 HV *stash = gv_stashpv ("IO::AIO", 1); 1059 aio_stash = gv_stashpv ("IO::AIO" , 1);
1060 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1061 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1062 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1187 1063
1188 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1064 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1189 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1065 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1190 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1191 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1192 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1193 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1194 1066
1195 create_pipe (); 1067 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1196 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1197 1068
1198 start_thread (); 1069 reinit ();
1199} 1070}
1200 1071
1201void 1072void
1202min_parallel (int nthreads) 1073reinit ()
1203 PROTOTYPE: $ 1074 PROTOTYPE:
1204 1075
1205void 1076void
1206max_parallel (int nthreads) 1077max_poll_reqs (unsigned int nreqs)
1207 PROTOTYPE: $
1208
1209int
1210max_outstanding (int maxreqs)
1211 PROTOTYPE: $ 1078 PROTOTYPE: $
1212 CODE: 1079 CODE:
1213 RETVAL = max_outstanding; 1080 eio_set_max_poll_reqs (nreqs);
1081
1082void
1083max_poll_time (double nseconds)
1084 PROTOTYPE: $
1085 CODE:
1086 eio_set_max_poll_time (nseconds);
1087
1088void
1089min_parallel (unsigned int nthreads)
1090 PROTOTYPE: $
1091 CODE:
1092 eio_set_min_parallel (nthreads);
1093
1094void
1095max_parallel (unsigned int nthreads)
1096 PROTOTYPE: $
1097 CODE:
1098 eio_set_max_parallel (nthreads);
1099
1100void
1101max_idle (unsigned int nthreads)
1102 PROTOTYPE: $
1103 CODE:
1104 eio_set_max_idle (nthreads);
1105
1106void
1107idle_timeout (unsigned int seconds)
1108 PROTOTYPE: $
1109 CODE:
1110 eio_set_idle_timeout (seconds);
1111
1112void
1113max_outstanding (unsigned int maxreqs)
1114 PROTOTYPE: $
1115 CODE:
1214 max_outstanding = maxreqs; 1116 max_outstanding = maxreqs;
1215 OUTPUT:
1216 RETVAL
1217 1117
1218void 1118void
1219aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1119aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1220 SV * pathname
1221 int flags
1222 int mode
1223 SV * callback
1224 PROTOTYPE: $$$;$
1225 PPCODE: 1120 PPCODE:
1226{ 1121{
1227 dREQ; 1122 dREQ;
1228 1123
1229 req->type = REQ_OPEN; 1124 req->type = EIO_WD_OPEN;
1230 req->data = newSVsv (pathname); 1125 req_set_path1 (req, pathname);
1231 req->dataptr = SvPVbyte_nolen (req->data);
1232 req->fd = flags;
1233 req->mode = mode;
1234 1126
1235 REQ_SEND; 1127 REQ_SEND;
1236} 1128}
1237 1129
1238void 1130void
1131aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1132 PPCODE:
1133{
1134 dREQ;
1135
1136 req->type = EIO_OPEN;
1137 req_set_path1 (req, pathname);
1138 req->int1 = flags;
1139 req->int2 = mode;
1140
1141 REQ_SEND;
1142}
1143
1144void
1239aio_close (fh,callback=&PL_sv_undef) 1145aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1240 SV * fh
1241 SV * callback
1242 PROTOTYPE: $;$
1243 ALIAS: 1146 ALIAS:
1244 aio_close = REQ_CLOSE
1245 aio_fsync = REQ_FSYNC 1147 aio_fsync = EIO_FSYNC
1246 aio_fdatasync = REQ_FDATASYNC 1148 aio_fdatasync = EIO_FDATASYNC
1149 aio_syncfs = EIO_SYNCFS
1247 PPCODE: 1150 PPCODE:
1248{ 1151{
1152 int fd = s_fileno_croak (fh, 0);
1249 dREQ; 1153 dREQ;
1250 1154
1251 req->type = ix; 1155 req->type = ix;
1252 req->fh = newSVsv (fh); 1156 req->sv1 = newSVsv (fh);
1253 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1157 req->int1 = fd;
1254 1158
1255 REQ_SEND (req); 1159 REQ_SEND;
1256} 1160}
1257 1161
1258void 1162void
1163aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1164 PPCODE:
1165{
1166 int fd = s_fileno_croak (fh, 0);
1167 dREQ;
1168
1169 req->type = EIO_SYNC_FILE_RANGE;
1170 req->sv1 = newSVsv (fh);
1171 req->int1 = fd;
1172 req->offs = offset;
1173 req->size = nbytes;
1174 req->int2 = flags;
1175
1176 REQ_SEND;
1177}
1178
1179void
1180aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1181 PPCODE:
1182{
1183 int fd = s_fileno_croak (fh, 0);
1184 dREQ;
1185
1186 req->type = EIO_FALLOCATE;
1187 req->sv1 = newSVsv (fh);
1188 req->int1 = fd;
1189 req->int2 = mode;
1190 req->offs = offset;
1191 req->size = len;
1192
1193 REQ_SEND;
1194}
1195
1196void
1197aio_close (SV *fh, SV *callback = &PL_sv_undef)
1198 PPCODE:
1199{
1200 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1201 int fd = s_fileno_croak (fh, 0);
1202 dREQ;
1203
1204 if (expect_false (close_fd < 0))
1205 {
1206 int pipefd [2];
1207
1208 if (
1209#ifdef _WIN32
1210 _pipe (pipefd, 1, _O_BINARY) < 0
1211#else
1212 pipe (pipefd) < 0
1213 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1214#endif
1215 || close (pipefd [1]) < 0
1216 )
1217 abort (); /*D*/
1218
1219 close_fd = pipefd [0];
1220 }
1221
1222 req->type = EIO_DUP2;
1223 req->int1 = close_fd;
1224 req->sv2 = newSVsv (fh);
1225 req->int2 = fd;
1226
1227 REQ_SEND;
1228}
1229
1230void
1231aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1232 PPCODE:
1233{
1234 int fd = s_fileno_croak (fh, 0);
1235 dREQ;
1236
1237 req->type = EIO_SEEK;
1238 req->sv1 = newSVsv (fh);
1239 req->int1 = fd;
1240 req->offs = SvVAL64 (offset);
1241 req->int2 = whence;
1242
1243 REQ_SEND;
1244}
1245
1246void
1259aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1247aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1260 SV * fh
1261 UV offset
1262 UV length
1263 SV * data
1264 UV dataoffset
1265 SV * callback
1266 ALIAS: 1248 ALIAS:
1267 aio_read = REQ_READ 1249 aio_read = EIO_READ
1268 aio_write = REQ_WRITE 1250 aio_write = EIO_WRITE
1269 PROTOTYPE: $$$$$;$
1270 PPCODE: 1251 PPCODE:
1271{ 1252{
1272 aio_req req;
1273 STRLEN svlen; 1253 STRLEN svlen;
1254 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1274 char *svptr = SvPVbyte (data, svlen); 1255 char *svptr = SvPVbyte (data, svlen);
1275 1256 UV len = SvUV (length);
1276 SvUPGRADE (data, SVt_PV);
1277 SvPOK_on (data);
1278 1257
1279 if (dataoffset < 0) 1258 if (dataoffset < 0)
1280 dataoffset += svlen; 1259 dataoffset += svlen;
1281 1260
1282 if (dataoffset < 0 || dataoffset > svlen) 1261 if (dataoffset < 0 || dataoffset > svlen)
1283 croak ("data offset outside of string"); 1262 croak ("dataoffset outside of data scalar");
1284 1263
1285 if (ix == REQ_WRITE) 1264 if (ix == EIO_WRITE)
1286 { 1265 {
1287 /* write: check length and adjust. */ 1266 /* write: check length and adjust. */
1288 if (length < 0 || length + dataoffset > svlen) 1267 if (!SvOK (length) || len + dataoffset > svlen)
1289 length = svlen - dataoffset; 1268 len = svlen - dataoffset;
1290 } 1269 }
1291 else 1270 else
1292 { 1271 {
1293 /* read: grow scalar as necessary */ 1272 /* read: check type and grow scalar as necessary */
1273 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1294 svptr = SvGROW (data, length + dataoffset); 1274 svptr = sv_grow (data, len + dataoffset + 1);
1275 else if (SvCUR (data) < len + dataoffset)
1276 croak ("length + dataoffset outside of scalar, and cannot grow");
1295 } 1277 }
1296
1297 if (length < 0)
1298 croak ("length must not be negative");
1299 1278
1300 { 1279 {
1301 dREQ; 1280 dREQ;
1302 1281
1303 req->type = ix; 1282 req->type = ix;
1304 req->fh = newSVsv (fh); 1283 req->sv1 = newSVsv (fh);
1305 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1284 req->int1 = fd;
1306 : IoOFP (sv_2io (fh))); 1285 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1307 req->offset = offset; 1286 req->size = len;
1308 req->length = length;
1309 req->data = SvREFCNT_inc (data); 1287 req->sv2 = SvREFCNT_inc (data);
1310 req->dataptr = (char *)svptr + dataoffset; 1288 req->ptr2 = (char *)svptr + dataoffset;
1289 req->stroffset = dataoffset;
1311 1290
1312 if (!SvREADONLY (data)) 1291 if (!SvREADONLY (data))
1313 { 1292 {
1314 SvREADONLY_on (data); 1293 SvREADONLY_on (data);
1315 req->data2ptr = (void *)data; 1294 req->flags |= FLAG_SV2_RO_OFF;
1316 } 1295 }
1317 1296
1318 REQ_SEND; 1297 REQ_SEND;
1319 } 1298 }
1320} 1299}
1321 1300
1322void 1301void
1323aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1302aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1324 SV * out_fh 1303 ALIAS:
1325 SV * in_fh 1304 aio_ioctl = EIO_IOCTL
1326 UV in_offset 1305 aio_fcntl = EIO_FCNTL
1327 UV length
1328 SV * callback
1329 PROTOTYPE: $$$$;$
1330 PPCODE: 1306 PPCODE:
1331{ 1307{
1332 dREQ; 1308 int fd = s_fileno_croak (fh, 0);
1309 char *svptr;
1333 1310
1334 req->type = REQ_SENDFILE; 1311 if (SvPOK (arg) || !SvNIOK (arg))
1335 req->fh = newSVsv (out_fh);
1336 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1337 req->fh2 = newSVsv (in_fh);
1338 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1339 req->offset = in_offset;
1340 req->length = length;
1341
1342 REQ_SEND;
1343}
1344
1345void
1346aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1347 SV * fh
1348 UV offset
1349 IV length
1350 SV * callback
1351 PROTOTYPE: $$$;$
1352 PPCODE:
1353{
1354 dREQ;
1355
1356 req->type = REQ_READAHEAD;
1357 req->fh = newSVsv (fh);
1358 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1359 req->offset = offset;
1360 req->length = length;
1361
1362 REQ_SEND;
1363}
1364
1365void
1366aio_stat (fh_or_path,callback=&PL_sv_undef)
1367 SV * fh_or_path
1368 SV * callback
1369 ALIAS:
1370 aio_stat = REQ_STAT
1371 aio_lstat = REQ_LSTAT
1372 PPCODE:
1373{
1374 dREQ;
1375
1376 New (0, req->statdata, 1, Stat_t);
1377 if (!req->statdata)
1378 { 1312 {
1379 req_free (req); 1313 STRLEN svlen;
1380 croak ("out of memory during aio_req->statdata allocation"); 1314 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1381 } 1315#ifdef IOCPARM_LEN
1316 STRLEN need = IOCPARM_LEN (request);
1317#else
1318 STRLEN need = 256;
1319#endif
1382 1320
1383 if (SvPOK (fh_or_path)) 1321 if (svlen < need)
1384 { 1322 svptr = SvGROW (arg, need);
1385 req->type = ix;
1386 req->data = newSVsv (fh_or_path);
1387 req->dataptr = SvPVbyte_nolen (req->data);
1388 } 1323 }
1389 else 1324 else
1325 svptr = (char *)SvIV (arg);
1326
1390 { 1327 {
1328 dREQ;
1329
1391 req->type = REQ_FSTAT; 1330 req->type = ix;
1392 req->fh = newSVsv (fh_or_path); 1331 req->sv1 = newSVsv (fh);
1393 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1332 req->int1 = fd;
1333 req->int2 = (long)request;
1334 req->sv2 = SvREFCNT_inc (arg);
1335 req->ptr2 = svptr;
1336
1337 REQ_SEND;
1394 } 1338 }
1339}
1340
1341void
1342aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1343 ALIAS:
1344 aio_readlink = EIO_READLINK
1345 aio_realpath = EIO_REALPATH
1346 PPCODE:
1347{
1348 dREQ;
1349
1350 req->type = ix;
1351 req_set_path1 (req, pathname);
1395 1352
1396 REQ_SEND; 1353 REQ_SEND;
1397} 1354}
1398 1355
1399void 1356void
1400aio_unlink (pathname,callback=&PL_sv_undef) 1357aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1401 SV * pathname 1358 PPCODE:
1402 SV * callback 1359{
1360 int ifd = s_fileno_croak (in_fh , 0);
1361 int ofd = s_fileno_croak (out_fh, 1);
1362 dREQ;
1363
1364 req->type = EIO_SENDFILE;
1365 req->sv1 = newSVsv (out_fh);
1366 req->int1 = ofd;
1367 req->sv2 = newSVsv (in_fh);
1368 req->int2 = ifd;
1369 req->offs = in_offset;
1370 req->size = length;
1371
1372 REQ_SEND;
1373}
1374
1375void
1376aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1377 PPCODE:
1378{
1379 int fd = s_fileno_croak (fh, 0);
1380 dREQ;
1381
1382 req->type = EIO_READAHEAD;
1383 req->sv1 = newSVsv (fh);
1384 req->int1 = fd;
1385 req->offs = offset;
1386 req->size = length;
1387
1388 REQ_SEND;
1389}
1390
1391void
1392aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1403 ALIAS: 1393 ALIAS:
1394 aio_stat = EIO_STAT
1395 aio_lstat = EIO_LSTAT
1396 aio_statvfs = EIO_STATVFS
1397 PPCODE:
1398{
1399 dREQ;
1400
1401 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1402
1403 REQ_SEND;
1404}
1405
1406UV
1407major (UV dev)
1408 ALIAS:
1409 minor = 1
1410 CODE:
1411 RETVAL = ix ? minor (dev) : major (dev);
1412 OUTPUT:
1413 RETVAL
1414
1415UV
1416makedev (UV maj, UV min)
1417 CODE:
1418 RETVAL = makedev (maj, min);
1419 OUTPUT:
1420 RETVAL
1421
1422void
1423aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1424 PPCODE:
1425{
1426 dREQ;
1427
1428 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1429 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1430 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1431
1432 REQ_SEND;
1433}
1434
1435void
1436aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1437 PPCODE:
1438{
1439 dREQ;
1440
1441 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1442 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1443
1444 REQ_SEND;
1445}
1446
1447void
1448aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1449 PPCODE:
1450{
1451 dREQ;
1452
1453 req->int2 = mode;
1454 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1455
1456 REQ_SEND;
1457}
1458
1459void
1460aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1461 PPCODE:
1462{
1463 dREQ;
1464
1465 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1466 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1467 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1468
1469 REQ_SEND;
1470}
1471
1472void
1473aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1474 PPCODE:
1475{
1476 dREQ;
1477
1478 req->type = EIO_READDIR;
1479 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1480
1481 if (flags & EIO_READDIR_DENTS)
1482 req->int1 |= EIO_READDIR_CUSTOM2;
1483
1484 req_set_path1 (req, pathname);
1485
1486 REQ_SEND;
1487}
1488
1489void
1490aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1491 PPCODE:
1492{
1493 dREQ;
1494
1495 req->type = EIO_MKDIR;
1496 req->int2 = mode;
1497 req_set_path1 (req, pathname);
1498
1499 REQ_SEND;
1500}
1501
1502void
1503aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1504 ALIAS:
1404 aio_unlink = REQ_UNLINK 1505 aio_unlink = EIO_UNLINK
1405 aio_rmdir = REQ_RMDIR 1506 aio_rmdir = EIO_RMDIR
1406 aio_readdir = REQ_READDIR 1507 aio_readdir = EIO_READDIR
1407 PPCODE: 1508 PPCODE:
1408{ 1509{
1409 dREQ; 1510 dREQ;
1410 1511
1411 req->type = ix; 1512 req->type = ix;
1412 req->data = newSVsv (pathname); 1513 req_set_path1 (req, pathname);
1413 req->dataptr = SvPVbyte_nolen (req->data); 1514
1414
1415 REQ_SEND; 1515 REQ_SEND;
1416} 1516}
1417 1517
1418void 1518void
1419aio_link (oldpath,newpath,callback=&PL_sv_undef) 1519aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1420 SV * oldpath
1421 SV * newpath
1422 SV * callback
1423 ALIAS: 1520 ALIAS:
1424 aio_link = REQ_LINK 1521 aio_link = EIO_LINK
1425 aio_symlink = REQ_SYMLINK 1522 aio_symlink = EIO_SYMLINK
1426 aio_rename = REQ_RENAME 1523 aio_rename = EIO_RENAME
1427 PPCODE: 1524 PPCODE:
1428{ 1525{
1526 eio_wd wd2 = 0;
1429 dREQ; 1527 dREQ;
1430 1528
1431 req->type = ix; 1529 req->type = ix;
1432 req->fh = newSVsv (oldpath); 1530 req_set_path1 (req, oldpath);
1433 req->data2ptr = SvPVbyte_nolen (req->fh); 1531 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1434 req->data = newSVsv (newpath); 1532 req->int3 = (long)wd2;
1435 req->dataptr = SvPVbyte_nolen (req->data);
1436 1533
1437 REQ_SEND; 1534 REQ_SEND;
1438} 1535}
1439 1536
1440void 1537void
1441aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1538aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1442 SV * pathname
1443 SV * callback
1444 UV mode
1445 UV dev
1446 PPCODE: 1539 PPCODE:
1447{ 1540{
1448 dREQ; 1541 dREQ;
1449 1542
1450 req->type = REQ_MKNOD; 1543 req->type = EIO_MKNOD;
1451 req->data = newSVsv (pathname);
1452 req->dataptr = SvPVbyte_nolen (req->data);
1453 req->mode = (mode_t)mode; 1544 req->int2 = (mode_t)mode;
1454 req->offset = dev; 1545 req->offs = dev;
1546 req_set_path1 (req, pathname);
1455 1547
1456 REQ_SEND; 1548 REQ_SEND;
1457} 1549}
1458 1550
1459void 1551void
1552aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1553 ALIAS:
1554 aio_mtouch = EIO_MTOUCH
1555 aio_msync = EIO_MSYNC
1556 PPCODE:
1557{
1558 STRLEN svlen;
1559 char *svptr = SvPVbyte (data, svlen);
1560 UV len = SvUV (length);
1561
1562 if (offset < 0)
1563 offset += svlen;
1564
1565 if (offset < 0 || offset > svlen)
1566 croak ("offset outside of scalar");
1567
1568 if (!SvOK (length) || len + offset > svlen)
1569 len = svlen - offset;
1570
1571 {
1572 dREQ;
1573
1574 req->type = ix;
1575 req->sv2 = SvREFCNT_inc (data);
1576 req->ptr2 = (char *)svptr + offset;
1577 req->size = len;
1578 req->int1 = flags;
1579
1580 REQ_SEND;
1581 }
1582}
1583
1584void
1585aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1586 PPCODE:
1587{
1588 STRLEN svlen;
1589 char *svptr = SvPVbyte (data, svlen);
1590 UV len = SvUV (length);
1591
1592 if (offset < 0)
1593 offset += svlen;
1594
1595 if (offset < 0 || offset > svlen)
1596 croak ("offset outside of scalar");
1597
1598 if (!SvOK (length) || len + offset > svlen)
1599 len = svlen - offset;
1600
1601 {
1602 dREQ;
1603
1604 req->type = EIO_MLOCK;
1605 req->sv2 = SvREFCNT_inc (data);
1606 req->ptr2 = (char *)svptr + offset;
1607 req->size = len;
1608
1609 REQ_SEND;
1610 }
1611}
1612
1613void
1614aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1615 PPCODE:
1616{
1617 dREQ;
1618
1619 req->type = EIO_MLOCKALL;
1620 req->int1 = flags;
1621
1622 REQ_SEND;
1623}
1624
1625void
1626aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1627 PPCODE:
1628{
1629 int fd = s_fileno_croak (fh, 0);
1630 dREQ;
1631
1632 req->type = EIO_CUSTOM;
1633 req->sv1 = newSVsv (fh);
1634 req->int1 = fd;
1635
1636 req->feed = fiemap;
1637#if HAVE_FIEMAP
1638 /* keep our fingers crossed that the next two types are 64 bit */
1639 req->offs = start;
1640 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1641 req->int2 = flags;
1642 req->int3 = SvOK (count) ? SvIV (count) : -1;
1643#endif
1644
1645 REQ_SEND;
1646}
1647
1648void
1460aio_busy (delay,callback=&PL_sv_undef) 1649aio_busy (double delay, SV *callback = &PL_sv_undef)
1461 double delay
1462 SV * callback
1463 PPCODE: 1650 PPCODE:
1464{ 1651{
1465 dREQ; 1652 dREQ;
1466 1653
1467 req->type = REQ_BUSY; 1654 req->type = EIO_BUSY;
1468 req->fd = delay < 0. ? 0 : delay; 1655 req->nv1 = delay < 0. ? 0. : delay;
1469 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1470 1656
1471 REQ_SEND; 1657 REQ_SEND;
1472} 1658}
1473 1659
1474void 1660void
1475aio_group (callback=&PL_sv_undef) 1661aio_group (SV *callback = &PL_sv_undef)
1476 SV * callback
1477 PROTOTYPE: ;$
1478 PPCODE: 1662 PPCODE:
1479{ 1663{
1480 dREQ; 1664 dREQ;
1481 1665
1482 req->type = REQ_GROUP; 1666 req->type = EIO_GROUP;
1667
1668 PUTBACK;
1483 req_send (req); 1669 req_submit (req);
1670 SPAGAIN;
1484 1671
1485 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1672 XPUSHs (req_sv (req, aio_grp_stash));
1486} 1673}
1487 1674
1488void 1675void
1489aio_nop (callback=&PL_sv_undef) 1676aio_nop (SV *callback = &PL_sv_undef)
1490 SV * callback 1677 ALIAS:
1678 aio_nop = EIO_NOP
1679 aio_sync = EIO_SYNC
1491 PPCODE: 1680 PPCODE:
1492{ 1681{
1493 dREQ; 1682 dREQ;
1494 1683
1495 req->type = REQ_NOP; 1684 req->type = ix;
1496 1685
1497 REQ_SEND; 1686 REQ_SEND;
1498} 1687}
1499 1688
1500int 1689int
1501aioreq_pri (int pri = 0) 1690aioreq_pri (int pri = NO_INIT)
1502 PROTOTYPE: ;$
1503 CODE: 1691 CODE:
1504 RETVAL = next_pri - PRI_BIAS; 1692 RETVAL = next_pri;
1505 if (items > 0) 1693 if (items > 0)
1506 { 1694 {
1507 if (pri < PRI_MIN) pri = PRI_MIN; 1695 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1508 if (pri > PRI_MAX) pri = PRI_MAX; 1696 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1509 next_pri = pri + PRI_BIAS; 1697 next_pri = pri;
1510 } 1698 }
1511 OUTPUT: 1699 OUTPUT:
1512 RETVAL 1700 RETVAL
1513 1701
1514void 1702void
1515aioreq_nice (int nice = 0) 1703aioreq_nice (int nice = 0)
1516 CODE: 1704 CODE:
1517 nice = next_pri - nice; 1705 nice = next_pri - nice;
1518 if (nice < PRI_MIN) nice = PRI_MIN; 1706 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1519 if (nice > PRI_MAX) nice = PRI_MAX; 1707 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1520 next_pri = nice + PRI_BIAS; 1708 next_pri = nice;
1521 1709
1522void 1710void
1523flush () 1711flush ()
1712 CODE:
1713 while (eio_nreqs ())
1714 {
1715 poll_wait ();
1716 poll_cb ();
1717 }
1718
1719int
1720poll ()
1721 CODE:
1722 poll_wait ();
1723 RETVAL = poll_cb ();
1724 OUTPUT:
1725 RETVAL
1726
1727int
1728poll_fileno ()
1729 CODE:
1730 RETVAL = s_epipe_fd (&respipe);
1731 OUTPUT:
1732 RETVAL
1733
1734int
1735poll_cb (...)
1524 PROTOTYPE: 1736 PROTOTYPE:
1525 CODE: 1737 CODE:
1526 while (nreqs)
1527 {
1528 poll_wait ();
1529 poll_cb (0); 1738 RETVAL = poll_cb ();
1530 }
1531
1532void
1533poll()
1534 PROTOTYPE:
1535 CODE:
1536 if (nreqs)
1537 {
1538 poll_wait ();
1539 poll_cb (0);
1540 }
1541
1542int
1543poll_fileno()
1544 PROTOTYPE:
1545 CODE:
1546 RETVAL = respipe [0];
1547 OUTPUT: 1739 OUTPUT:
1548 RETVAL 1740 RETVAL
1549 1741
1742void
1743poll_wait ()
1744 CODE:
1745 poll_wait ();
1746
1550int 1747int
1551poll_cb(...) 1748nreqs ()
1552 PROTOTYPE:
1553 CODE: 1749 CODE:
1554 RETVAL = poll_cb (0); 1750 RETVAL = eio_nreqs ();
1555 OUTPUT: 1751 OUTPUT:
1556 RETVAL 1752 RETVAL
1557 1753
1558int 1754int
1559poll_some(int max = 0) 1755nready ()
1560 PROTOTYPE: $
1561 CODE: 1756 CODE:
1562 RETVAL = poll_cb (max); 1757 RETVAL = eio_nready ();
1563 OUTPUT: 1758 OUTPUT:
1564 RETVAL 1759 RETVAL
1565 1760
1566void 1761int
1567poll_wait() 1762npending ()
1568 PROTOTYPE:
1569 CODE: 1763 CODE:
1570 if (nreqs) 1764 RETVAL = eio_npending ();
1571 poll_wait ();
1572
1573int
1574nreqs()
1575 PROTOTYPE:
1576 CODE:
1577 RETVAL = nreqs;
1578 OUTPUT: 1765 OUTPUT:
1579 RETVAL 1766 RETVAL
1580 1767
1581int 1768int
1582nready() 1769nthreads ()
1583 PROTOTYPE:
1584 CODE: 1770 CODE:
1585 RETVAL = get_nready (); 1771 RETVAL = eio_nthreads ();
1586 OUTPUT: 1772 OUTPUT:
1587 RETVAL 1773 RETVAL
1588 1774
1589int 1775int
1590npending() 1776fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1591 PROTOTYPE: 1777 CODE:
1778 RETVAL = posix_fadvise (fh, offset, length, advice);
1779 OUTPUT:
1780 RETVAL
1781
1782IV
1783sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1784 CODE:
1785 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1786 OUTPUT:
1787 RETVAL
1788
1789void
1790mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1791 PPCODE:
1792 sv_unmagic (scalar, MMAP_MAGIC);
1793{
1794 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1795 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1796 if (addr == (void *)-1)
1797 XSRETURN_NO;
1798
1799 sv_force_normal (scalar);
1800
1801 /* we store the length in mg_obj, as namlen is I32 :/ */
1802 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1803 ->mg_obj = (SV *)length;
1804
1805 SvUPGRADE (scalar, SVt_PV); /* nop... */
1806
1807 if (!(prot & PROT_WRITE))
1808 SvREADONLY_on (scalar);
1809
1810 if (SvLEN (scalar))
1811 Safefree (SvPVX (scalar));
1812
1813 SvPVX (scalar) = (char *)addr;
1814 SvCUR_set (scalar, length);
1815 SvLEN_set (scalar, 0);
1816 SvPOK_only (scalar);
1817
1818 XSRETURN_YES;
1819}
1820
1821void
1822munmap (SV *scalar)
1592 CODE: 1823 CODE:
1593 RETVAL = get_npending (); 1824 sv_unmagic (scalar, MMAP_MAGIC);
1825
1826int
1827madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1828 ALIAS:
1829 mprotect = 1
1830 CODE:
1831{
1832 STRLEN svlen;
1833 void *addr = SvPVbyte (scalar, svlen);
1834 STRLEN len = SvUV (length);
1835
1836 if (offset < 0)
1837 offset += svlen;
1838
1839 if (offset < 0 || offset > svlen)
1840 croak ("offset outside of scalar");
1841
1842 if (!SvOK (length) || len + offset > svlen)
1843 len = svlen - offset;
1844
1845 addr = (void *)(((intptr_t)addr) + offset);
1846 eio_page_align (&addr, &len);
1847
1848 switch (ix)
1849 {
1850 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1851 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1852 }
1853}
1594 OUTPUT: 1854 OUTPUT:
1595 RETVAL 1855 RETVAL
1856
1857int
1858munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1859 CODE:
1860{
1861 STRLEN svlen;
1862 void *addr = SvPVbyte (scalar, svlen);
1863 size_t len = SvUV (length);
1864
1865 if (offset < 0)
1866 offset += svlen;
1867
1868 if (offset < 0 || offset > svlen)
1869 croak ("offset outside of scalar");
1870
1871 if (!SvOK (length) || len + offset > svlen)
1872 len = svlen - offset;
1873
1874 addr = (void *)(((intptr_t)addr) + offset);
1875 eio_page_align (&addr, &len);
1876#if _POSIX_MEMLOCK_RANGE
1877 RETVAL = munlock (addr, len);
1878#else
1879 RETVAL = EIO_ENOSYS ();
1880#endif
1881}
1882 OUTPUT:
1883 RETVAL
1884
1885int
1886munlockall ()
1887 CODE:
1888#if _POSIX_MEMLOCK
1889 munlockall ();
1890#else
1891 RETVAL = EIO_ENOSYS ();
1892#endif
1893 OUTPUT:
1894 RETVAL
1895
1896int
1897splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1898 CODE:
1899{
1900#if HAVE_LINUX_SPLICE
1901 loff_t off_in_, off_out_;
1902 RETVAL = splice (
1903 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1904 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1905 length, flags
1906 );
1907#else
1908 RETVAL = EIO_ENOSYS ();
1909#endif
1910}
1911 OUTPUT:
1912 RETVAL
1913
1914int
1915tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1916 CODE:
1917#if HAVE_LINUX_SPLICE
1918 RETVAL = tee (rfh, wfh, length, flags);
1919#else
1920 RETVAL = EIO_ENOSYS ();
1921#endif
1922 OUTPUT:
1923 RETVAL
1924
1925int
1926pipesize (aio_rfd rfh, int new_size = -1)
1927 PROTOTYPE: $;$
1928 CODE:
1929#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1930 if (new_size >= 0)
1931 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1932 else
1933 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1934#else
1935 errno = ENOSYS;
1936 RETVAL = -1;
1937#endif
1938 OUTPUT:
1939 RETVAL
1940
1941void
1942pipe2 (int flags = 0)
1943 PROTOTYPE: ;$
1944 PPCODE:
1945{
1946 int fd[2];
1947 int res;
1948
1949 if (flags)
1950#if HAVE_PIPE2
1951 res = pipe2 (fd, flags);
1952#else
1953 res = (errno = ENOSYS, -1);
1954#endif
1955 else
1956 res = pipe (fd);
1957
1958 if (!res)
1959 {
1960 EXTEND (SP, 2);
1961 PUSHs (newmortalFH (fd[0], O_RDONLY));
1962 PUSHs (newmortalFH (fd[1], O_WRONLY));
1963 }
1964}
1965
1966void _on_next_submit (SV *cb)
1967 CODE:
1968 SvREFCNT_dec (on_next_submit);
1969 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1596 1970
1597PROTOTYPES: DISABLE 1971PROTOTYPES: DISABLE
1972
1973MODULE = IO::AIO PACKAGE = IO::AIO::WD
1974
1975BOOT:
1976{
1977 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1978 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1979}
1980
1981void
1982DESTROY (SV *self)
1983 CODE:
1984{
1985 aio_wd wd = SvAIO_WD (self);
1986#if HAVE_AT
1987 {
1988 SV *callback = &PL_sv_undef;
1989 dREQ; /* clobbers next_pri :/ */
1990 next_pri = req->pri; /* restore next_pri */
1991 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1992 req->type = EIO_WD_CLOSE;
1993 req->wd = wd;
1994 REQ_SEND;
1995 }
1996#else
1997 eio_wd_close_sync (wd);
1998#endif
1999}
1598 2000
1599MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2001MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1600 2002
1601void 2003void
1602cancel (aio_req_ornot req) 2004cancel (aio_req_ornot req)
1603 CODE: 2005 CODE:
1604 req_cancel (req); 2006 eio_cancel (req);
1605 2007
1606void 2008void
1607cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2009cb (aio_req_ornot req, SV *callback = NO_INIT)
1608 CODE: 2010 PPCODE:
2011{
2012 if (GIMME_V != G_VOID)
2013 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2014
2015 if (items > 1)
2016 {
2017 SV *cb_cv = get_cb (callback);
2018
1609 SvREFCNT_dec (req->callback); 2019 SvREFCNT_dec (req->callback);
1610 req->callback = newSVsv (callback); 2020 req->callback = SvREFCNT_inc (cb_cv);
2021 }
2022}
1611 2023
1612MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2024MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1613 2025
1614void 2026void
1615add (aio_req grp, ...) 2027add (aio_req grp, ...)
1616 PPCODE: 2028 PPCODE:
1617{ 2029{
1618 int i; 2030 int i;
1619 aio_req req;
1620 2031
1621 if (grp->fd == 2) 2032 if (grp->int1 == 2)
1622 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2033 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1623 2034
1624 for (i = 1; i < items; ++i ) 2035 for (i = 1; i < items; ++i )
1625 { 2036 {
2037 aio_req req;
2038
1626 if (GIMME_V != G_VOID) 2039 if (GIMME_V != G_VOID)
1627 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2040 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1628 2041
1629 req = SvAIO_REQ (ST (i)); 2042 req = SvAIO_REQ (ST (i));
1630 2043
1631 if (req) 2044 if (req)
1632 { 2045 eio_grp_add (grp, req);
1633 ++grp->length;
1634 req->grp = grp;
1635
1636 req->grp_prev = 0;
1637 req->grp_next = grp->grp_first;
1638
1639 if (grp->grp_first)
1640 grp->grp_first->grp_prev = req;
1641
1642 grp->grp_first = req;
1643 }
1644 } 2046 }
1645} 2047}
1646 2048
1647void 2049void
1648cancel_subs (aio_req_ornot req) 2050cancel_subs (aio_req_ornot req)
… …
1657 AV *av; 2059 AV *av;
1658 2060
1659 grp->errorno = errno; 2061 grp->errorno = errno;
1660 2062
1661 av = newAV (); 2063 av = newAV ();
2064 av_extend (av, items - 1);
1662 2065
1663 for (i = 1; i < items; ++i ) 2066 for (i = 1; i < items; ++i )
1664 av_push (av, newSVsv (ST (i))); 2067 av_push (av, newSVsv (ST (i)));
1665 2068
1666 SvREFCNT_dec (grp->data); 2069 SvREFCNT_dec (grp->sv1);
1667 grp->data = (SV *)av; 2070 grp->sv1 = (SV *)av;
1668} 2071}
1669 2072
1670void 2073void
1671errno (aio_req grp, int errorno = errno) 2074errno (aio_req grp, int errorno = errno)
1672 CODE: 2075 CODE:
1673 grp->errorno = errorno; 2076 grp->errorno = errorno;
1674 2077
1675void 2078void
1676limit (aio_req grp, int limit) 2079limit (aio_req grp, int limit)
1677 CODE: 2080 CODE:
1678 grp->fd2 = limit; 2081 eio_grp_limit (grp, limit);
1679 aio_grp_feed (grp);
1680 2082
1681void 2083void
1682feed (aio_req grp, SV *callback=&PL_sv_undef) 2084feed (aio_req grp, SV *callback = &PL_sv_undef)
1683 CODE: 2085 CODE:
1684{ 2086{
1685 SvREFCNT_dec (grp->fh2); 2087 SvREFCNT_dec (grp->sv2);
1686 grp->fh2 = newSVsv (callback); 2088 grp->sv2 = newSVsv (callback);
2089 grp->feed = aio_grp_feed;
1687 2090
1688 if (grp->fd2 <= 0) 2091 if (grp->int2 <= 0)
1689 grp->fd2 = 2; 2092 grp->int2 = 2;
1690 2093
1691 aio_grp_feed (grp); 2094 eio_grp_limit (grp, grp->int2);
1692} 2095}
1693 2096

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