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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.81 by root, Fri Oct 27 20:10:06 2006 UTC vs.
Revision 1.241 by root, Sun May 1 17:19:39 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 req_send (req);
616
617 LOCK (wrklock);
618 --started;
619 UNLOCK (wrklock);
620}
621
622static void min_parallel (int nthreads)
623{
624 if (wanted < nthreads)
625 wanted = nthreads;
626}
627
628static void max_parallel (int nthreads)
629{
630 if (wanted > nthreads)
631 wanted = nthreads;
632
633 while (started > wanted)
634 end_thread ();
635}
636
637static void poll_wait ()
638{
639 fd_set rfd;
640
641 while (nreqs) 705 while (eio_nreqs ())
642 { 706 {
643 int size; 707 int size;
644 if (WORDREAD_UNSAFE) LOCK (reslock); 708
709 X_LOCK (EIO_POOL->reslock);
645 size = res_queue.size; 710 size = EIO_POOL->res_queue.size;
646 if (WORDREAD_UNSAFE) UNLOCK (reslock); 711 X_UNLOCK (EIO_POOL->reslock);
647 712
648 if (size) 713 if (size)
649 return; 714 return;
650 715
651 maybe_start_thread (); 716 etp_maybe_start_thread (EIO_POOL);
652 717
653 FD_ZERO(&rfd); 718 s_epipe_wait (&respipe);
654 FD_SET(respipe [0], &rfd);
655
656 select (respipe [0] + 1, &rfd, 0, 0, 0);
657 } 719 }
658} 720}
659 721
660static int poll_cb (int max) 722static int
723poll_cb (void)
661{ 724{
662 dSP;
663 int count = 0;
664 int do_croak = 0;
665 aio_req req;
666
667 for (;;) 725 for (;;)
668 { 726 {
669 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)
670 { 835 {
671 maybe_start_thread (); 836 path = AvARRAY (rv)[1];
837 wdob = AvARRAY (rv)[0];
672 838
673 LOCK (reslock); 839 if (SvOK (wdob))
674 req = reqq_shift (&res_queue);
675
676 if (req)
677 { 840 {
678 --npending; 841 *wd = SvAIO_WD (wdob);
679 842 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
680 if (!res_queue.size)
681 {
682 /* read any signals sent by the worker threads */
683 char buf [32];
684 while (read (respipe [0], buf, 32) == 32)
685 ;
686 }
687 }
688
689 UNLOCK (reslock);
690
691 if (!req)
692 break;
693
694 --nreqs;
695
696 if (req->type == REQ_GROUP && req->length)
697 {
698 req->fd = 1; /* mark request as delayed */
699 continue;
700 } 843 }
701 else 844 else
702 { 845 *wd = EIO_INVALID_WD;
703 if (req->type == REQ_READ)
704 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707 SvREADONLY_off (req->data);
708
709 if (req->statdata)
710 {
711 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712 PL_laststatval = req->result;
713 PL_statcache = *(req->statdata);
714 }
715
716 req_invoke (req);
717
718 count++;
719 }
720
721 req_free (req);
722 } 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 }
723 857
724 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)));
725 break; 881 break;
726 882
727 poll_wait (); 883 default:
728 884 req->type = type_path;
729 max = 0; 885 req_set_path1 (req, fh_or_path);
886 break;
730 } 887 }
731
732 return count;
733} 888}
734 889
735static void create_pipe () 890XS(boot_IO__AIO) ecb_cold;
736{
737 if (pipe (respipe))
738 croak ("unable to initialize result pipe");
739 891
740 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741 croak ("cannot set result pipe to nonblocking mode");
742
743 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744 croak ("cannot set result pipe to nonblocking mode");
745}
746
747/*****************************************************************************/
748/* work around various missing functions */
749
750#if !HAVE_PREADWRITE
751# define pread aio_pread
752# define pwrite aio_pwrite
753
754/*
755 * make our pread/pwrite safe against themselves, but not against
756 * normal read/write by using a mutex. slows down execution a lot,
757 * but that's your problem, not mine.
758 */
759static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762{
763 ssize_t res;
764 off_t ooffset;
765
766 LOCK (preadwritelock);
767 ooffset = lseek (fd, 0, SEEK_CUR);
768 lseek (fd, offset, SEEK_SET);
769 res = read (fd, buf, count);
770 lseek (fd, ooffset, SEEK_SET);
771 UNLOCK (preadwritelock);
772
773 return res;
774}
775
776static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777{
778 ssize_t res;
779 off_t ooffset;
780
781 LOCK (preadwritelock);
782 ooffset = lseek (fd, 0, SEEK_CUR);
783 lseek (fd, offset, SEEK_SET);
784 res = write (fd, buf, count);
785 lseek (fd, offset, SEEK_SET);
786 UNLOCK (preadwritelock);
787
788 return res;
789}
790#endif
791
792#if !HAVE_FDATASYNC
793# define fdatasync fsync
794#endif
795
796#if !HAVE_READAHEAD
797# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800{
801 dBUF;
802
803 while (count > 0)
804 {
805 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807 pread (fd, aio_buf, len, offset);
808 offset += len;
809 count -= len;
810 }
811
812 errno = 0;
813}
814
815#endif
816
817#if !HAVE_READDIR_R
818# define readdir_r aio_readdir_r
819
820static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823{
824 struct dirent *e;
825 int errorno;
826
827 LOCK (readdirlock);
828
829 e = readdir (dirp);
830 errorno = errno;
831
832 if (e)
833 {
834 *res = ent;
835 strcpy (ent->d_name, e->d_name);
836 }
837 else
838 *res = 0;
839
840 UNLOCK (readdirlock);
841
842 errno = errorno;
843 return e ? 0 : -1;
844}
845#endif
846
847/* sendfile always needs emulation */
848static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849{
850 ssize_t res;
851
852 if (!count)
853 return 0;
854
855#if HAVE_SENDFILE
856# if __linux
857 res = sendfile (ofd, ifd, &offset, count);
858
859# elif __freebsd
860 /*
861 * Of course, the freebsd sendfile is a dire hack with no thoughts
862 * wasted on making it similar to other I/O functions.
863 */
864 {
865 off_t sbytes;
866 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868 if (res < 0 && sbytes)
869 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870 res = sbytes;
871 }
872
873# elif __hpux
874 res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876# elif __solaris
877 {
878 struct sendfilevec vec;
879 size_t sbytes;
880
881 vec.sfv_fd = ifd;
882 vec.sfv_flag = 0;
883 vec.sfv_off = offset;
884 vec.sfv_len = count;
885
886 res = sendfilev (ofd, &vec, 1, &sbytes);
887
888 if (res < 0 && sbytes)
889 res = sbytes;
890 }
891
892# endif
893#else
894 res = -1;
895 errno = ENOSYS;
896#endif
897
898 if (res < 0
899 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900#if __solaris
901 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
902#endif
903 )
904 )
905 {
906 /* emulate sendfile. this is a major pain in the ass */
907 dBUF;
908
909 res = 0;
910
911 while (count)
912 {
913 ssize_t cnt;
914
915 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917 if (cnt <= 0)
918 {
919 if (cnt && !res) res = -1;
920 break;
921 }
922
923 cnt = write (ofd, aio_buf, cnt);
924
925 if (cnt <= 0)
926 {
927 if (cnt && !res) res = -1;
928 break;
929 }
930
931 offset += cnt;
932 res += cnt;
933 count -= cnt;
934 }
935 }
936
937 return res;
938}
939
940/* read a full directory */
941static void scandir_ (aio_req req, worker *self)
942{
943 DIR *dirp;
944 union
945 {
946 struct dirent d;
947 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948 } *u;
949 struct dirent *entp;
950 char *name, *names;
951 int memlen = 4096;
952 int memofs = 0;
953 int res = 0;
954 int errorno;
955
956 LOCK (wrklock);
957 self->dirp = dirp = opendir (req->dataptr);
958 self->dbuf = u = malloc (sizeof (*u));
959 req->data2ptr = names = malloc (memlen);
960 UNLOCK (wrklock);
961
962 if (dirp && u && names)
963 for (;;)
964 {
965 errno = 0;
966 readdir_r (dirp, &u->d, &entp);
967
968 if (!entp)
969 break;
970
971 name = entp->d_name;
972
973 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974 {
975 int len = strlen (name) + 1;
976
977 res++;
978
979 while (memofs + len > memlen)
980 {
981 memlen *= 2;
982 LOCK (wrklock);
983 req->data2ptr = names = realloc (names, memlen);
984 UNLOCK (wrklock);
985
986 if (!names)
987 break;
988 }
989
990 memcpy (names + memofs, name, len);
991 memofs += len;
992 }
993 }
994
995 if (errno)
996 res = -1;
997
998 req->result = res;
999}
1000
1001/*****************************************************************************/
1002
1003static void *aio_proc (void *thr_arg)
1004{
1005 aio_req req;
1006 worker *self = (worker *)thr_arg;
1007
1008 for (;;)
1009 {
1010 LOCK (reqlock);
1011
1012 for (;;)
1013 {
1014 self->req = req = reqq_shift (&req_queue);
1015
1016 if (req)
1017 break;
1018
1019 pthread_cond_wait (&reqwait, &reqlock);
1020 }
1021
1022 --nready;
1023
1024 UNLOCK (reqlock);
1025
1026 errno = 0; /* strictly unnecessary */
1027
1028 if (!(req->flags & FLAG_CANCELLED))
1029 switch (req->type)
1030 {
1031 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042 case REQ_CLOSE: req->result = close (req->fd); break;
1043 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051 case REQ_FSYNC: req->result = fsync (req->fd); break;
1052 case REQ_READDIR: scandir_ (req, self); break;
1053
1054 case REQ_BUSY:
1055 {
1056 struct timeval tv;
1057
1058 tv.tv_sec = req->fd;
1059 tv.tv_usec = req->fd2;
1060
1061 req->result = select (0, 0, 0, 0, &tv);
1062 }
1063
1064 case REQ_GROUP:
1065 case REQ_NOP:
1066 break;
1067
1068 case REQ_QUIT:
1069 LOCK (wrklock);
1070 worker_free (self);
1071 --started;
1072 UNLOCK (wrklock);
1073 return 0;
1074
1075 default:
1076 req->result = ENOSYS;
1077 break;
1078 }
1079
1080 req->errorno = errno;
1081
1082 LOCK (reslock);
1083
1084 ++npending;
1085
1086 if (!reqq_push (&res_queue, req))
1087 /* write a dummy byte to the pipe so fh becomes ready */
1088 write (respipe [1], &respipe, 1);
1089
1090 self->req = 0;
1091 worker_clear (self);
1092
1093 UNLOCK (reslock);
1094 }
1095}
1096
1097/*****************************************************************************/
1098
1099static void atfork_prepare (void)
1100{
1101 LOCK (wrklock);
1102 LOCK (reqlock);
1103 LOCK (reslock);
1104#if !HAVE_PREADWRITE
1105 LOCK (preadwritelock);
1106#endif
1107#if !HAVE_READDIR_R
1108 LOCK (readdirlock);
1109#endif
1110}
1111
1112static void atfork_parent (void)
1113{
1114#if !HAVE_READDIR_R
1115 UNLOCK (readdirlock);
1116#endif
1117#if !HAVE_PREADWRITE
1118 UNLOCK (preadwritelock);
1119#endif
1120 UNLOCK (reslock);
1121 UNLOCK (reqlock);
1122 UNLOCK (wrklock);
1123}
1124
1125static void atfork_child (void)
1126{
1127 aio_req prv;
1128
1129 while (prv = reqq_shift (&req_queue))
1130 req_free (prv);
1131
1132 while (prv = reqq_shift (&res_queue))
1133 req_free (prv);
1134
1135 while (wrk_first.next != &wrk_first)
1136 {
1137 worker *wrk = wrk_first.next;
1138
1139 if (wrk->req)
1140 req_free (wrk->req);
1141
1142 worker_clear (wrk);
1143 worker_free (wrk);
1144 }
1145
1146 started = 0;
1147 nreqs = 0;
1148
1149 close (respipe [0]);
1150 close (respipe [1]);
1151 create_pipe ();
1152
1153 atfork_parent ();
1154}
1155
1156#define dREQ \
1157 aio_req req; \
1158 int req_pri = next_pri; \
1159 next_pri = DEFAULT_PRI + PRI_BIAS; \
1160 \
1161 if (SvOK (callback) && !SvROK (callback)) \
1162 croak ("callback must be undef or of reference type"); \
1163 \
1164 Newz (0, req, 1, aio_cb); \
1165 if (!req) \
1166 croak ("out of memory during aio_req allocation"); \
1167 \
1168 req->callback = newSVsv (callback); \
1169 req->pri = req_pri
1170
1171#define REQ_SEND \
1172 req_send (req); \
1173 \
1174 if (GIMME_V != G_VOID) \
1175 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1176
1177MODULE = IO::AIO PACKAGE = IO::AIO 892MODULE = IO::AIO PACKAGE = IO::AIO
1178 893
1179PROTOTYPES: ENABLE 894PROTOTYPES: ENABLE
1180 895
1181BOOT: 896BOOT:
1182{ 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
929 /* the second block will be 0 when missing */
930 const_iv (O_RDONLY)
931 const_iv (O_WRONLY)
932 const_iv (O_RDWR)
933 const_iv (O_CREAT)
934 const_iv (O_TRUNC)
935 const_iv (O_EXCL)
936 const_iv (O_APPEND)
937
938 const_iv (O_ASYNC)
939 const_iv (O_DIRECT)
940 const_iv (O_NOATIME)
941
942 const_iv (O_CLOEXEC)
943 const_iv (O_NOCTTY)
944 const_iv (O_NOFOLLOW)
945 const_iv (O_NONBLOCK)
946 const_iv (O_EXEC)
947 const_iv (O_SEARCH)
948 const_iv (O_DIRECTORY)
949 const_iv (O_DSYNC)
950 const_iv (O_RSYNC)
951 const_iv (O_SYNC)
952 const_iv (O_PATH)
953 const_iv (O_TMPFILE)
954 const_iv (O_TTY_INIT)
955
956 const_iv (S_IFIFO)
957 const_iv (S_IFCHR)
958 const_iv (S_IFBLK)
959 const_iv (S_IFLNK)
960 const_iv (S_IFREG)
961 const_iv (S_IFDIR)
962 const_iv (S_IFWHT)
963 const_iv (S_IFSOCK)
964 const_iv (S_IFMT)
965
966 const_iv (ST_RDONLY)
967 const_iv (ST_NOSUID)
968 const_iv (ST_NODEV)
969 const_iv (ST_NOEXEC)
970 const_iv (ST_SYNCHRONOUS)
971 const_iv (ST_MANDLOCK)
972 const_iv (ST_WRITE)
973 const_iv (ST_APPEND)
974 const_iv (ST_IMMUTABLE)
975 const_iv (ST_NOATIME)
976 const_iv (ST_NODIRATIME)
977 const_iv (ST_RELATIME)
978
979 const_iv (PROT_NONE)
980 const_iv (PROT_EXEC)
981 const_iv (PROT_READ)
982 const_iv (PROT_WRITE)
983
984 const_iv (MAP_PRIVATE)
985 const_iv (MAP_SHARED)
986 const_iv (MAP_FIXED)
987 const_iv (MAP_ANONYMOUS)
988
989 /* linuxish */
990 const_iv (MAP_LOCKED)
991 const_iv (MAP_NORESERVE)
992 const_iv (MAP_POPULATE)
993 const_iv (MAP_NONBLOCK)
994 const_iv (MAP_GROWSDOWN)
995 const_iv (MAP_32BIT)
996 const_iv (MAP_HUGETLB)
997 const_iv (MAP_STACK)
998
999 const_iv (FIEMAP_FLAG_SYNC)
1000 const_iv (FIEMAP_FLAG_XATTR)
1001 const_iv (FIEMAP_FLAGS_COMPAT)
1002 const_iv (FIEMAP_EXTENT_LAST)
1003 const_iv (FIEMAP_EXTENT_UNKNOWN)
1004 const_iv (FIEMAP_EXTENT_DELALLOC)
1005 const_iv (FIEMAP_EXTENT_ENCODED)
1006 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1007 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1008 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1009 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1010 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1011 const_iv (FIEMAP_EXTENT_MERGED)
1012 const_iv (FIEMAP_EXTENT_SHARED)
1013
1014 const_iv (SPLICE_F_MOVE)
1015 const_iv (SPLICE_F_NONBLOCK)
1016 const_iv (SPLICE_F_MORE)
1017 const_iv (SPLICE_F_GIFT)
1018
1019 /* these are libeio constants, and are independent of gendef0 */
1020 const_eio (SEEK_SET)
1021 const_eio (SEEK_CUR)
1022 const_eio (SEEK_END)
1023
1024 const_eio (MCL_FUTURE)
1025 const_eio (MCL_CURRENT)
1026
1027 const_eio (MS_ASYNC)
1028 const_eio (MS_INVALIDATE)
1029 const_eio (MS_SYNC)
1030
1031 const_eio (MT_MODIFY)
1032
1033 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1034 const_eio (SYNC_FILE_RANGE_WRITE)
1035 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1036
1037 const_eio (FALLOC_FL_KEEP_SIZE)
1038 const_eio (FALLOC_FL_PUNCH_HOLE)
1039 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1040 const_eio (FALLOC_FL_ZERO_RANGE)
1041
1042 const_eio (READDIR_DENTS)
1043 const_eio (READDIR_DIRS_FIRST)
1044 const_eio (READDIR_STAT_ORDER)
1045 const_eio (READDIR_FOUND_UNKNOWN)
1046
1047 const_eio (DT_UNKNOWN)
1048 const_eio (DT_FIFO)
1049 const_eio (DT_CHR)
1050 const_eio (DT_DIR)
1051 const_eio (DT_BLK)
1052 const_eio (DT_REG)
1053 const_eio (DT_LNK)
1054 const_eio (DT_SOCK)
1055 const_eio (DT_WHT)
1056 };
1057
1183 HV *stash = gv_stashpv ("IO::AIO", 1); 1058 aio_stash = gv_stashpv ("IO::AIO" , 1);
1184 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1059 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1185 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1060 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1186 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1061 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1187 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1188 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1189 1062
1190 create_pipe (); 1063 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1191 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1064 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1192 1065
1193 start_thread (); 1066 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1194}
1195 1067
1068 reinit ();
1069}
1070
1196void 1071void
1197min_parallel (int nthreads) 1072reinit ()
1198 PROTOTYPE: $ 1073 PROTOTYPE:
1199 1074
1200void 1075void
1201max_parallel (int nthreads) 1076max_poll_reqs (unsigned int nreqs)
1202 PROTOTYPE: $
1203
1204int
1205max_outstanding (int maxreqs)
1206 PROTOTYPE: $ 1077 PROTOTYPE: $
1207 CODE: 1078 CODE:
1208 RETVAL = max_outstanding; 1079 eio_set_max_poll_reqs (nreqs);
1080
1081void
1082max_poll_time (double nseconds)
1083 PROTOTYPE: $
1084 CODE:
1085 eio_set_max_poll_time (nseconds);
1086
1087void
1088min_parallel (unsigned int nthreads)
1089 PROTOTYPE: $
1090 CODE:
1091 eio_set_min_parallel (nthreads);
1092
1093void
1094max_parallel (unsigned int nthreads)
1095 PROTOTYPE: $
1096 CODE:
1097 eio_set_max_parallel (nthreads);
1098
1099void
1100max_idle (unsigned int nthreads)
1101 PROTOTYPE: $
1102 CODE:
1103 eio_set_max_idle (nthreads);
1104
1105void
1106idle_timeout (unsigned int seconds)
1107 PROTOTYPE: $
1108 CODE:
1109 eio_set_idle_timeout (seconds);
1110
1111void
1112max_outstanding (unsigned int maxreqs)
1113 PROTOTYPE: $
1114 CODE:
1209 max_outstanding = maxreqs; 1115 max_outstanding = maxreqs;
1210 OUTPUT:
1211 RETVAL
1212 1116
1213void 1117void
1214aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1118aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1215 SV * pathname
1216 int flags
1217 int mode
1218 SV * callback
1219 PROTOTYPE: $$$;$
1220 PPCODE: 1119 PPCODE:
1221{ 1120{
1222 dREQ; 1121 dREQ;
1223 1122
1224 req->type = REQ_OPEN; 1123 req->type = EIO_WD_OPEN;
1225 req->data = newSVsv (pathname); 1124 req_set_path1 (req, pathname);
1226 req->dataptr = SvPVbyte_nolen (req->data);
1227 req->fd = flags;
1228 req->mode = mode;
1229 1125
1230 REQ_SEND; 1126 REQ_SEND;
1231} 1127}
1232 1128
1233void 1129void
1130aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1131 PPCODE:
1132{
1133 dREQ;
1134
1135 req->type = EIO_OPEN;
1136 req_set_path1 (req, pathname);
1137 req->int1 = flags;
1138 req->int2 = mode;
1139
1140 REQ_SEND;
1141}
1142
1143void
1234aio_close (fh,callback=&PL_sv_undef) 1144aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1235 SV * fh
1236 SV * callback
1237 PROTOTYPE: $;$
1238 ALIAS: 1145 ALIAS:
1239 aio_close = REQ_CLOSE
1240 aio_fsync = REQ_FSYNC 1146 aio_fsync = EIO_FSYNC
1241 aio_fdatasync = REQ_FDATASYNC 1147 aio_fdatasync = EIO_FDATASYNC
1148 aio_syncfs = EIO_SYNCFS
1242 PPCODE: 1149 PPCODE:
1243{ 1150{
1151 int fd = s_fileno_croak (fh, 0);
1244 dREQ; 1152 dREQ;
1245 1153
1246 req->type = ix; 1154 req->type = ix;
1247 req->fh = newSVsv (fh); 1155 req->sv1 = newSVsv (fh);
1248 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1156 req->int1 = fd;
1249 1157
1250 REQ_SEND (req); 1158 REQ_SEND;
1251} 1159}
1252 1160
1253void 1161void
1162aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1163 PPCODE:
1164{
1165 int fd = s_fileno_croak (fh, 0);
1166 dREQ;
1167
1168 req->type = EIO_SYNC_FILE_RANGE;
1169 req->sv1 = newSVsv (fh);
1170 req->int1 = fd;
1171 req->offs = offset;
1172 req->size = nbytes;
1173 req->int2 = flags;
1174
1175 REQ_SEND;
1176}
1177
1178void
1179aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1180 PPCODE:
1181{
1182 int fd = s_fileno_croak (fh, 0);
1183 dREQ;
1184
1185 req->type = EIO_FALLOCATE;
1186 req->sv1 = newSVsv (fh);
1187 req->int1 = fd;
1188 req->int2 = mode;
1189 req->offs = offset;
1190 req->size = len;
1191
1192 REQ_SEND;
1193}
1194
1195void
1196aio_close (SV *fh, SV *callback = &PL_sv_undef)
1197 PPCODE:
1198{
1199 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1200 int fd = s_fileno_croak (fh, 0);
1201 dREQ;
1202
1203 if (expect_false (close_fd < 0))
1204 {
1205 int pipefd [2];
1206
1207 if (
1208#ifdef _WIN32
1209 _pipe (pipefd, 1, _O_BINARY) < 0
1210#else
1211 pipe (pipefd) < 0
1212 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1213#endif
1214 || close (pipefd [1]) < 0
1215 )
1216 abort (); /*D*/
1217
1218 close_fd = pipefd [0];
1219 }
1220
1221 req->type = EIO_DUP2;
1222 req->int1 = close_fd;
1223 req->sv2 = newSVsv (fh);
1224 req->int2 = fd;
1225
1226 REQ_SEND;
1227}
1228
1229void
1230aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1231 PPCODE:
1232{
1233 int fd = s_fileno_croak (fh, 0);
1234 dREQ;
1235
1236 req->type = EIO_SEEK;
1237 req->sv1 = newSVsv (fh);
1238 req->int1 = fd;
1239 req->offs = SvVAL64 (offset);
1240 req->int2 = whence;
1241
1242 REQ_SEND;
1243}
1244
1245void
1254aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1246aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1255 SV * fh
1256 UV offset
1257 UV length
1258 SV * data
1259 UV dataoffset
1260 SV * callback
1261 ALIAS: 1247 ALIAS:
1262 aio_read = REQ_READ 1248 aio_read = EIO_READ
1263 aio_write = REQ_WRITE 1249 aio_write = EIO_WRITE
1264 PROTOTYPE: $$$$$;$
1265 PPCODE: 1250 PPCODE:
1266{ 1251{
1267 aio_req req;
1268 STRLEN svlen; 1252 STRLEN svlen;
1253 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1269 char *svptr = SvPVbyte (data, svlen); 1254 char *svptr = SvPVbyte (data, svlen);
1270 1255 UV len = SvUV (length);
1271 SvUPGRADE (data, SVt_PV);
1272 SvPOK_on (data);
1273 1256
1274 if (dataoffset < 0) 1257 if (dataoffset < 0)
1275 dataoffset += svlen; 1258 dataoffset += svlen;
1276 1259
1277 if (dataoffset < 0 || dataoffset > svlen) 1260 if (dataoffset < 0 || dataoffset > svlen)
1278 croak ("data offset outside of string"); 1261 croak ("dataoffset outside of data scalar");
1279 1262
1280 if (ix == REQ_WRITE) 1263 if (ix == EIO_WRITE)
1281 { 1264 {
1282 /* write: check length and adjust. */ 1265 /* write: check length and adjust. */
1283 if (length < 0 || length + dataoffset > svlen) 1266 if (!SvOK (length) || len + dataoffset > svlen)
1284 length = svlen - dataoffset; 1267 len = svlen - dataoffset;
1285 } 1268 }
1286 else 1269 else
1287 { 1270 {
1288 /* read: grow scalar as necessary */ 1271 /* read: check type and grow scalar as necessary */
1272 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1289 svptr = SvGROW (data, length + dataoffset); 1273 svptr = sv_grow (data, len + dataoffset + 1);
1274 else if (SvCUR (data) < len + dataoffset)
1275 croak ("length + dataoffset outside of scalar, and cannot grow");
1290 } 1276 }
1291
1292 if (length < 0)
1293 croak ("length must not be negative");
1294 1277
1295 { 1278 {
1296 dREQ; 1279 dREQ;
1297 1280
1298 req->type = ix; 1281 req->type = ix;
1299 req->fh = newSVsv (fh); 1282 req->sv1 = newSVsv (fh);
1300 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1283 req->int1 = fd;
1301 : IoOFP (sv_2io (fh))); 1284 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1302 req->offset = offset; 1285 req->size = len;
1303 req->length = length;
1304 req->data = SvREFCNT_inc (data); 1286 req->sv2 = SvREFCNT_inc (data);
1305 req->dataptr = (char *)svptr + dataoffset; 1287 req->ptr2 = (char *)svptr + dataoffset;
1288 req->stroffset = dataoffset;
1306 1289
1307 if (!SvREADONLY (data)) 1290 if (!SvREADONLY (data))
1308 { 1291 {
1309 SvREADONLY_on (data); 1292 SvREADONLY_on (data);
1310 req->data2ptr = (void *)data; 1293 req->flags |= FLAG_SV2_RO_OFF;
1311 } 1294 }
1312 1295
1313 REQ_SEND; 1296 REQ_SEND;
1314 } 1297 }
1315} 1298}
1316 1299
1317void 1300void
1318aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1301aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1319 SV * out_fh 1302 ALIAS:
1320 SV * in_fh 1303 aio_ioctl = EIO_IOCTL
1321 UV in_offset 1304 aio_fcntl = EIO_FCNTL
1322 UV length
1323 SV * callback
1324 PROTOTYPE: $$$$;$
1325 PPCODE: 1305 PPCODE:
1326{ 1306{
1327 dREQ; 1307 int fd = s_fileno_croak (fh, 0);
1308 char *svptr;
1328 1309
1329 req->type = REQ_SENDFILE; 1310 if (SvPOK (arg) || !SvNIOK (arg))
1330 req->fh = newSVsv (out_fh);
1331 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1332 req->fh2 = newSVsv (in_fh);
1333 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1334 req->offset = in_offset;
1335 req->length = length;
1336
1337 REQ_SEND;
1338}
1339
1340void
1341aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1342 SV * fh
1343 UV offset
1344 IV length
1345 SV * callback
1346 PROTOTYPE: $$$;$
1347 PPCODE:
1348{
1349 dREQ;
1350
1351 req->type = REQ_READAHEAD;
1352 req->fh = newSVsv (fh);
1353 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1354 req->offset = offset;
1355 req->length = length;
1356
1357 REQ_SEND;
1358}
1359
1360void
1361aio_stat (fh_or_path,callback=&PL_sv_undef)
1362 SV * fh_or_path
1363 SV * callback
1364 ALIAS:
1365 aio_stat = REQ_STAT
1366 aio_lstat = REQ_LSTAT
1367 PPCODE:
1368{
1369 dREQ;
1370
1371 New (0, req->statdata, 1, Stat_t);
1372 if (!req->statdata)
1373 { 1311 {
1374 req_free (req); 1312 STRLEN svlen;
1375 croak ("out of memory during aio_req->statdata allocation"); 1313 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1376 } 1314#ifdef IOCPARM_LEN
1315 STRLEN need = IOCPARM_LEN (request);
1316#else
1317 STRLEN need = 256;
1318#endif
1377 1319
1378 if (SvPOK (fh_or_path)) 1320 if (svlen < need)
1379 { 1321 svptr = SvGROW (arg, need);
1380 req->type = ix;
1381 req->data = newSVsv (fh_or_path);
1382 req->dataptr = SvPVbyte_nolen (req->data);
1383 } 1322 }
1384 else 1323 else
1324 svptr = (char *)SvIV (arg);
1325
1385 { 1326 {
1327 dREQ;
1328
1386 req->type = REQ_FSTAT; 1329 req->type = ix;
1387 req->fh = newSVsv (fh_or_path); 1330 req->sv1 = newSVsv (fh);
1388 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1331 req->int1 = fd;
1332 req->int2 = (long)request;
1333 req->sv2 = SvREFCNT_inc (arg);
1334 req->ptr2 = svptr;
1335
1336 REQ_SEND;
1389 } 1337 }
1338}
1339
1340void
1341aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1342 ALIAS:
1343 aio_readlink = EIO_READLINK
1344 aio_realpath = EIO_REALPATH
1345 PPCODE:
1346{
1347 dREQ;
1348
1349 req->type = ix;
1350 req_set_path1 (req, pathname);
1390 1351
1391 REQ_SEND; 1352 REQ_SEND;
1392} 1353}
1393 1354
1394void 1355void
1395aio_unlink (pathname,callback=&PL_sv_undef) 1356aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1396 SV * pathname 1357 PPCODE:
1397 SV * callback 1358{
1359 int ifd = s_fileno_croak (in_fh , 0);
1360 int ofd = s_fileno_croak (out_fh, 1);
1361 dREQ;
1362
1363 req->type = EIO_SENDFILE;
1364 req->sv1 = newSVsv (out_fh);
1365 req->int1 = ofd;
1366 req->sv2 = newSVsv (in_fh);
1367 req->int2 = ifd;
1368 req->offs = in_offset;
1369 req->size = length;
1370
1371 REQ_SEND;
1372}
1373
1374void
1375aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1376 PPCODE:
1377{
1378 int fd = s_fileno_croak (fh, 0);
1379 dREQ;
1380
1381 req->type = EIO_READAHEAD;
1382 req->sv1 = newSVsv (fh);
1383 req->int1 = fd;
1384 req->offs = offset;
1385 req->size = length;
1386
1387 REQ_SEND;
1388}
1389
1390void
1391aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1398 ALIAS: 1392 ALIAS:
1393 aio_stat = EIO_STAT
1394 aio_lstat = EIO_LSTAT
1395 aio_statvfs = EIO_STATVFS
1396 PPCODE:
1397{
1398 dREQ;
1399
1400 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1401
1402 REQ_SEND;
1403}
1404
1405UV
1406major (UV dev)
1407 ALIAS:
1408 minor = 1
1409 CODE:
1410 RETVAL = ix ? minor (dev) : major (dev);
1411 OUTPUT:
1412 RETVAL
1413
1414UV
1415makedev (UV maj, UV min)
1416 CODE:
1417 RETVAL = makedev (maj, min);
1418 OUTPUT:
1419 RETVAL
1420
1421void
1422aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1423 PPCODE:
1424{
1425 dREQ;
1426
1427 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1428 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1429 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1430
1431 REQ_SEND;
1432}
1433
1434void
1435aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1436 PPCODE:
1437{
1438 dREQ;
1439
1440 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1441 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1442
1443 REQ_SEND;
1444}
1445
1446void
1447aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1448 PPCODE:
1449{
1450 dREQ;
1451
1452 req->int2 = mode;
1453 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1454
1455 REQ_SEND;
1456}
1457
1458void
1459aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1460 PPCODE:
1461{
1462 dREQ;
1463
1464 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1465 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1466 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1467
1468 REQ_SEND;
1469}
1470
1471void
1472aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1473 PPCODE:
1474{
1475 dREQ;
1476
1477 req->type = EIO_READDIR;
1478 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1479
1480 if (flags & EIO_READDIR_DENTS)
1481 req->int1 |= EIO_READDIR_CUSTOM2;
1482
1483 req_set_path1 (req, pathname);
1484
1485 REQ_SEND;
1486}
1487
1488void
1489aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1490 PPCODE:
1491{
1492 dREQ;
1493
1494 req->type = EIO_MKDIR;
1495 req->int2 = mode;
1496 req_set_path1 (req, pathname);
1497
1498 REQ_SEND;
1499}
1500
1501void
1502aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1503 ALIAS:
1399 aio_unlink = REQ_UNLINK 1504 aio_unlink = EIO_UNLINK
1400 aio_rmdir = REQ_RMDIR 1505 aio_rmdir = EIO_RMDIR
1401 aio_readdir = REQ_READDIR 1506 aio_readdir = EIO_READDIR
1402 PPCODE: 1507 PPCODE:
1403{ 1508{
1404 dREQ; 1509 dREQ;
1405 1510
1406 req->type = ix; 1511 req->type = ix;
1407 req->data = newSVsv (pathname); 1512 req_set_path1 (req, pathname);
1408 req->dataptr = SvPVbyte_nolen (req->data); 1513
1409
1410 REQ_SEND; 1514 REQ_SEND;
1411} 1515}
1412 1516
1413void 1517void
1414aio_link (oldpath,newpath,callback=&PL_sv_undef) 1518aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1415 SV * oldpath
1416 SV * newpath
1417 SV * callback
1418 ALIAS: 1519 ALIAS:
1419 aio_link = REQ_LINK 1520 aio_link = EIO_LINK
1420 aio_symlink = REQ_SYMLINK 1521 aio_symlink = EIO_SYMLINK
1421 aio_rename = REQ_RENAME 1522 aio_rename = EIO_RENAME
1422 PPCODE: 1523 PPCODE:
1423{ 1524{
1525 eio_wd wd2 = 0;
1424 dREQ; 1526 dREQ;
1425 1527
1426 req->type = ix; 1528 req->type = ix;
1427 req->fh = newSVsv (oldpath); 1529 req_set_path1 (req, oldpath);
1428 req->data2ptr = SvPVbyte_nolen (req->fh); 1530 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1429 req->data = newSVsv (newpath); 1531 req->int3 = (long)wd2;
1430 req->dataptr = SvPVbyte_nolen (req->data);
1431 1532
1432 REQ_SEND; 1533 REQ_SEND;
1433} 1534}
1434 1535
1435void 1536void
1436aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1537aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1437 SV * pathname
1438 SV * callback
1439 UV mode
1440 UV dev
1441 PPCODE: 1538 PPCODE:
1442{ 1539{
1443 dREQ; 1540 dREQ;
1444 1541
1445 req->type = REQ_MKNOD; 1542 req->type = EIO_MKNOD;
1446 req->data = newSVsv (pathname);
1447 req->dataptr = SvPVbyte_nolen (req->data);
1448 req->mode = (mode_t)mode; 1543 req->int2 = (mode_t)mode;
1449 req->offset = dev; 1544 req->offs = dev;
1545 req_set_path1 (req, pathname);
1450 1546
1451 REQ_SEND; 1547 REQ_SEND;
1452} 1548}
1453 1549
1454void 1550void
1551aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1552 ALIAS:
1553 aio_mtouch = EIO_MTOUCH
1554 aio_msync = EIO_MSYNC
1555 PPCODE:
1556{
1557 STRLEN svlen;
1558 char *svptr = SvPVbyte (data, svlen);
1559 UV len = SvUV (length);
1560
1561 if (offset < 0)
1562 offset += svlen;
1563
1564 if (offset < 0 || offset > svlen)
1565 croak ("offset outside of scalar");
1566
1567 if (!SvOK (length) || len + offset > svlen)
1568 len = svlen - offset;
1569
1570 {
1571 dREQ;
1572
1573 req->type = ix;
1574 req->sv2 = SvREFCNT_inc (data);
1575 req->ptr2 = (char *)svptr + offset;
1576 req->size = len;
1577 req->int1 = flags;
1578
1579 REQ_SEND;
1580 }
1581}
1582
1583void
1584aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1585 PPCODE:
1586{
1587 STRLEN svlen;
1588 char *svptr = SvPVbyte (data, svlen);
1589 UV len = SvUV (length);
1590
1591 if (offset < 0)
1592 offset += svlen;
1593
1594 if (offset < 0 || offset > svlen)
1595 croak ("offset outside of scalar");
1596
1597 if (!SvOK (length) || len + offset > svlen)
1598 len = svlen - offset;
1599
1600 {
1601 dREQ;
1602
1603 req->type = EIO_MLOCK;
1604 req->sv2 = SvREFCNT_inc (data);
1605 req->ptr2 = (char *)svptr + offset;
1606 req->size = len;
1607
1608 REQ_SEND;
1609 }
1610}
1611
1612void
1613aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1614 PPCODE:
1615{
1616 dREQ;
1617
1618 req->type = EIO_MLOCKALL;
1619 req->int1 = flags;
1620
1621 REQ_SEND;
1622}
1623
1624void
1625aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1626 PPCODE:
1627{
1628 int fd = s_fileno_croak (fh, 0);
1629 dREQ;
1630
1631 req->type = EIO_CUSTOM;
1632 req->sv1 = newSVsv (fh);
1633 req->int1 = fd;
1634
1635 req->feed = fiemap;
1636#if HAVE_FIEMAP
1637 /* keep our fingers crossed that the next two types are 64 bit */
1638 req->offs = start;
1639 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1640 req->int2 = flags;
1641 req->int3 = SvOK (count) ? SvIV (count) : -1;
1642#endif
1643
1644 REQ_SEND;
1645}
1646
1647void
1455aio_busy (delay,callback=&PL_sv_undef) 1648aio_busy (double delay, SV *callback = &PL_sv_undef)
1456 double delay
1457 SV * callback
1458 PPCODE: 1649 PPCODE:
1459{ 1650{
1460 dREQ; 1651 dREQ;
1461 1652
1462 req->type = REQ_BUSY; 1653 req->type = EIO_BUSY;
1463 req->fd = delay < 0. ? 0 : delay; 1654 req->nv1 = delay < 0. ? 0. : delay;
1464 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1465 1655
1466 REQ_SEND; 1656 REQ_SEND;
1467} 1657}
1468 1658
1469void 1659void
1470aio_group (callback=&PL_sv_undef) 1660aio_group (SV *callback = &PL_sv_undef)
1471 SV * callback
1472 PROTOTYPE: ;$
1473 PPCODE: 1661 PPCODE:
1474{ 1662{
1475 dREQ; 1663 dREQ;
1476 1664
1477 req->type = REQ_GROUP; 1665 req->type = EIO_GROUP;
1666
1667 PUTBACK;
1478 req_send (req); 1668 req_submit (req);
1669 SPAGAIN;
1479 1670
1480 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1671 XPUSHs (req_sv (req, aio_grp_stash));
1481} 1672}
1482 1673
1483void 1674void
1484aio_nop (callback=&PL_sv_undef) 1675aio_nop (SV *callback = &PL_sv_undef)
1485 SV * callback 1676 ALIAS:
1677 aio_nop = EIO_NOP
1678 aio_sync = EIO_SYNC
1486 PPCODE: 1679 PPCODE:
1487{ 1680{
1488 dREQ; 1681 dREQ;
1489 1682
1490 req->type = REQ_NOP; 1683 req->type = ix;
1491 1684
1492 REQ_SEND; 1685 REQ_SEND;
1493} 1686}
1494 1687
1495int 1688int
1496aioreq_pri (int pri = 0) 1689aioreq_pri (int pri = NO_INIT)
1497 PROTOTYPE: ;$
1498 CODE: 1690 CODE:
1499 RETVAL = next_pri - PRI_BIAS; 1691 RETVAL = next_pri;
1500 if (items > 0) 1692 if (items > 0)
1501 { 1693 {
1502 if (pri < PRI_MIN) pri = PRI_MIN; 1694 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1503 if (pri > PRI_MAX) pri = PRI_MAX; 1695 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1504 next_pri = pri + PRI_BIAS; 1696 next_pri = pri;
1505 } 1697 }
1506 OUTPUT: 1698 OUTPUT:
1507 RETVAL 1699 RETVAL
1508 1700
1509void 1701void
1510aioreq_nice (int nice = 0) 1702aioreq_nice (int nice = 0)
1511 CODE: 1703 CODE:
1512 nice = next_pri - nice; 1704 nice = next_pri - nice;
1513 if (nice < PRI_MIN) nice = PRI_MIN; 1705 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1514 if (nice > PRI_MAX) nice = PRI_MAX; 1706 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1515 next_pri = nice + PRI_BIAS; 1707 next_pri = nice;
1516 1708
1517void 1709void
1518flush () 1710flush ()
1711 CODE:
1712 while (eio_nreqs ())
1713 {
1714 poll_wait ();
1715 poll_cb ();
1716 }
1717
1718int
1719poll ()
1720 CODE:
1721 poll_wait ();
1722 RETVAL = poll_cb ();
1723 OUTPUT:
1724 RETVAL
1725
1726int
1727poll_fileno ()
1728 CODE:
1729 RETVAL = s_epipe_fd (&respipe);
1730 OUTPUT:
1731 RETVAL
1732
1733int
1734poll_cb (...)
1519 PROTOTYPE: 1735 PROTOTYPE:
1520 CODE: 1736 CODE:
1521 while (nreqs)
1522 {
1523 poll_wait ();
1524 poll_cb (0); 1737 RETVAL = poll_cb ();
1525 }
1526
1527void
1528poll()
1529 PROTOTYPE:
1530 CODE:
1531 if (nreqs)
1532 {
1533 poll_wait ();
1534 poll_cb (0);
1535 }
1536
1537int
1538poll_fileno()
1539 PROTOTYPE:
1540 CODE:
1541 RETVAL = respipe [0];
1542 OUTPUT: 1738 OUTPUT:
1543 RETVAL 1739 RETVAL
1544 1740
1741void
1742poll_wait ()
1743 CODE:
1744 poll_wait ();
1745
1545int 1746int
1546poll_cb(...) 1747nreqs ()
1547 PROTOTYPE:
1548 CODE: 1748 CODE:
1549 RETVAL = poll_cb (0); 1749 RETVAL = eio_nreqs ();
1550 OUTPUT: 1750 OUTPUT:
1551 RETVAL 1751 RETVAL
1552 1752
1553int 1753int
1554poll_some(int max = 0) 1754nready ()
1555 PROTOTYPE: $
1556 CODE: 1755 CODE:
1557 RETVAL = poll_cb (max); 1756 RETVAL = eio_nready ();
1558 OUTPUT: 1757 OUTPUT:
1559 RETVAL 1758 RETVAL
1560 1759
1561void 1760int
1562poll_wait() 1761npending ()
1563 PROTOTYPE:
1564 CODE: 1762 CODE:
1565 if (nreqs) 1763 RETVAL = eio_npending ();
1566 poll_wait ();
1567
1568int
1569nreqs()
1570 PROTOTYPE:
1571 CODE:
1572 RETVAL = nreqs;
1573 OUTPUT: 1764 OUTPUT:
1574 RETVAL 1765 RETVAL
1575 1766
1576int 1767int
1577nready() 1768nthreads ()
1578 PROTOTYPE:
1579 CODE: 1769 CODE:
1580 RETVAL = get_nready (); 1770 RETVAL = eio_nthreads ();
1581 OUTPUT: 1771 OUTPUT:
1582 RETVAL 1772 RETVAL
1583 1773
1584int 1774int
1585npending() 1775fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1586 PROTOTYPE: 1776 CODE:
1777 RETVAL = posix_fadvise (fh, offset, length, advice);
1778 OUTPUT:
1779 RETVAL
1780
1781IV
1782sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1783 CODE:
1784 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1785 OUTPUT:
1786 RETVAL
1787
1788void
1789mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1790 PPCODE:
1791 sv_unmagic (scalar, MMAP_MAGIC);
1792{
1793 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1794 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1795 if (addr == (void *)-1)
1796 XSRETURN_NO;
1797
1798 sv_force_normal (scalar);
1799
1800 /* we store the length in mg_obj, as namlen is I32 :/ */
1801 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1802 ->mg_obj = (SV *)length;
1803
1804 SvUPGRADE (scalar, SVt_PV); /* nop... */
1805
1806 if (!(prot & PROT_WRITE))
1807 SvREADONLY_on (scalar);
1808
1809 if (SvLEN (scalar))
1810 Safefree (SvPVX (scalar));
1811
1812 SvPVX (scalar) = (char *)addr;
1813 SvCUR_set (scalar, length);
1814 SvLEN_set (scalar, 0);
1815 SvPOK_only (scalar);
1816
1817 XSRETURN_YES;
1818}
1819
1820void
1821munmap (SV *scalar)
1587 CODE: 1822 CODE:
1588 RETVAL = get_npending (); 1823 sv_unmagic (scalar, MMAP_MAGIC);
1824
1825int
1826madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1827 ALIAS:
1828 mprotect = 1
1829 CODE:
1830{
1831 STRLEN svlen;
1832 void *addr = SvPVbyte (scalar, svlen);
1833 STRLEN len = SvUV (length);
1834
1835 if (offset < 0)
1836 offset += svlen;
1837
1838 if (offset < 0 || offset > svlen)
1839 croak ("offset outside of scalar");
1840
1841 if (!SvOK (length) || len + offset > svlen)
1842 len = svlen - offset;
1843
1844 addr = (void *)(((intptr_t)addr) + offset);
1845 eio_page_align (&addr, &len);
1846
1847 switch (ix)
1848 {
1849 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1850 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1851 }
1852}
1589 OUTPUT: 1853 OUTPUT:
1590 RETVAL 1854 RETVAL
1855
1856int
1857munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1858 CODE:
1859{
1860 STRLEN svlen;
1861 void *addr = SvPVbyte (scalar, svlen);
1862 size_t len = SvUV (length);
1863
1864 if (offset < 0)
1865 offset += svlen;
1866
1867 if (offset < 0 || offset > svlen)
1868 croak ("offset outside of scalar");
1869
1870 if (!SvOK (length) || len + offset > svlen)
1871 len = svlen - offset;
1872
1873 addr = (void *)(((intptr_t)addr) + offset);
1874 eio_page_align (&addr, &len);
1875#if _POSIX_MEMLOCK_RANGE
1876 RETVAL = munlock (addr, len);
1877#else
1878 RETVAL = EIO_ENOSYS ();
1879#endif
1880}
1881 OUTPUT:
1882 RETVAL
1883
1884int
1885munlockall ()
1886 CODE:
1887#if _POSIX_MEMLOCK
1888 munlockall ();
1889#else
1890 RETVAL = EIO_ENOSYS ();
1891#endif
1892 OUTPUT:
1893 RETVAL
1894
1895int
1896splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1897 CODE:
1898{
1899#if HAVE_LINUX_SPLICE
1900 loff_t off_in_, off_out_;
1901 RETVAL = splice (
1902 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1903 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1904 length, flags
1905 );
1906#else
1907 RETVAL = EIO_ENOSYS ();
1908#endif
1909}
1910 OUTPUT:
1911 RETVAL
1912
1913int
1914tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1915 CODE:
1916#if HAVE_LINUX_SPLICE
1917 RETVAL = tee (rfh, wfh, length, flags);
1918#else
1919 RETVAL = EIO_ENOSYS ();
1920#endif
1921 OUTPUT:
1922 RETVAL
1923
1924int
1925pipesize (aio_rfd rfh, int new_size = -1)
1926 PROTOTYPE: $;$
1927 CODE:
1928#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1929 if (new_size >= 0)
1930 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1931 else
1932 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1933#else
1934 errno = ENOSYS;
1935 RETVAL = -1;
1936#endif
1937 OUTPUT:
1938 RETVAL
1939
1940void
1941pipe2 (int flags = 0)
1942 PROTOTYPE: ;$
1943 PPCODE:
1944{
1945 int fd[2];
1946 int res;
1947
1948 if (flags)
1949#if HAVE_PIPE2
1950 res = pipe2 (fd, flags);
1951#else
1952 res = (errno = ENOSYS, -1);
1953#endif
1954 else
1955 res = pipe (fd);
1956
1957 if (!res)
1958 {
1959 EXTEND (SP, 2);
1960 PUSHs (newmortalFH (fd[0], O_RDONLY));
1961 PUSHs (newmortalFH (fd[1], O_WRONLY));
1962 }
1963}
1964
1965void _on_next_submit (SV *cb)
1966 CODE:
1967 SvREFCNT_dec (on_next_submit);
1968 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1591 1969
1592PROTOTYPES: DISABLE 1970PROTOTYPES: DISABLE
1971
1972MODULE = IO::AIO PACKAGE = IO::AIO::WD
1973
1974BOOT:
1975{
1976 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1977 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1978}
1979
1980void
1981DESTROY (SV *self)
1982 CODE:
1983{
1984 aio_wd wd = SvAIO_WD (self);
1985#if HAVE_AT
1986 {
1987 SV *callback = &PL_sv_undef;
1988 dREQ; /* clobbers next_pri :/ */
1989 next_pri = req->pri; /* restore next_pri */
1990 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1991 req->type = EIO_WD_CLOSE;
1992 req->wd = wd;
1993 REQ_SEND;
1994 }
1995#else
1996 eio_wd_close_sync (wd);
1997#endif
1998}
1593 1999
1594MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2000MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595 2001
1596void 2002void
1597cancel (aio_req_ornot req) 2003cancel (aio_req_ornot req)
1598 CODE: 2004 CODE:
1599 req_cancel (req); 2005 eio_cancel (req);
1600 2006
1601void 2007void
1602cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2008cb (aio_req_ornot req, SV *callback = NO_INIT)
1603 CODE: 2009 PPCODE:
2010{
2011 if (GIMME_V != G_VOID)
2012 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2013
2014 if (items > 1)
2015 {
2016 SV *cb_cv = get_cb (callback);
2017
1604 SvREFCNT_dec (req->callback); 2018 SvREFCNT_dec (req->callback);
1605 req->callback = newSVsv (callback); 2019 req->callback = SvREFCNT_inc (cb_cv);
2020 }
2021}
1606 2022
1607MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2023MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1608 2024
1609void 2025void
1610add (aio_req grp, ...) 2026add (aio_req grp, ...)
1611 PPCODE: 2027 PPCODE:
1612{ 2028{
1613 int i; 2029 int i;
1614 aio_req req;
1615 2030
1616 if (grp->fd == 2) 2031 if (grp->int1 == 2)
1617 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2032 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1618 2033
1619 for (i = 1; i < items; ++i ) 2034 for (i = 1; i < items; ++i )
1620 { 2035 {
2036 aio_req req;
2037
1621 if (GIMME_V != G_VOID) 2038 if (GIMME_V != G_VOID)
1622 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2039 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1623 2040
1624 req = SvAIO_REQ (ST (i)); 2041 req = SvAIO_REQ (ST (i));
1625 2042
1626 if (req) 2043 if (req)
1627 { 2044 eio_grp_add (grp, req);
1628 ++grp->length;
1629 req->grp = grp;
1630
1631 req->grp_prev = 0;
1632 req->grp_next = grp->grp_first;
1633
1634 if (grp->grp_first)
1635 grp->grp_first->grp_prev = req;
1636
1637 grp->grp_first = req;
1638 }
1639 } 2045 }
1640} 2046}
1641 2047
1642void 2048void
1643cancel_subs (aio_req_ornot req) 2049cancel_subs (aio_req_ornot req)
… …
1652 AV *av; 2058 AV *av;
1653 2059
1654 grp->errorno = errno; 2060 grp->errorno = errno;
1655 2061
1656 av = newAV (); 2062 av = newAV ();
2063 av_extend (av, items - 1);
1657 2064
1658 for (i = 1; i < items; ++i ) 2065 for (i = 1; i < items; ++i )
1659 av_push (av, newSVsv (ST (i))); 2066 av_push (av, newSVsv (ST (i)));
1660 2067
1661 SvREFCNT_dec (grp->data); 2068 SvREFCNT_dec (grp->sv1);
1662 grp->data = (SV *)av; 2069 grp->sv1 = (SV *)av;
1663} 2070}
1664 2071
1665void 2072void
1666errno (aio_req grp, int errorno = errno) 2073errno (aio_req grp, int errorno = errno)
1667 CODE: 2074 CODE:
1668 grp->errorno = errorno; 2075 grp->errorno = errorno;
1669 2076
1670void 2077void
1671limit (aio_req grp, int limit) 2078limit (aio_req grp, int limit)
1672 CODE: 2079 CODE:
1673 grp->fd2 = limit; 2080 eio_grp_limit (grp, limit);
1674 aio_grp_feed (grp);
1675 2081
1676void 2082void
1677feed (aio_req grp, SV *callback=&PL_sv_undef) 2083feed (aio_req grp, SV *callback = &PL_sv_undef)
1678 CODE: 2084 CODE:
1679{ 2085{
1680 SvREFCNT_dec (grp->fh2); 2086 SvREFCNT_dec (grp->sv2);
1681 grp->fh2 = newSVsv (callback); 2087 grp->sv2 = newSVsv (callback);
2088 grp->feed = aio_grp_feed;
1682 2089
1683 if (grp->fd2 <= 0) 2090 if (grp->int2 <= 0)
1684 grp->fd2 = 2; 2091 grp->int2 = 2;
1685 2092
1686 aio_grp_feed (grp); 2093 eio_grp_limit (grp, grp->int2);
1687} 2094}
1688 2095

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