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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 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/* number of seconds after which idle threads exit */ 149/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 150/* also provides const_iv_ and const_niv_ macros for them */
151#include "def0.h"
50 152
51/* used for struct dirent, AIX doesn't provide it */ 153#ifndef makedev
52#ifndef NAME_MAX 154# define makedev(maj,min) (((maj) << 8) | (min))
53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDREAD_UNSAFE
74# if __i386 || __x86_64
75# define WORDREAD_UNSAFE 0
76# else
77# define WORDREAD_UNSAFE 1
78# endif 155#endif
156#ifndef major
157# define major(dev) ((dev) >> 8)
79#endif 158#endif
159#ifndef minor
160# define minor(dev) ((dev) & 0xff)
161#endif
80 162
81/* buffer size for various temporary buffers */ 163#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 164# define PAGESIZE sysconf (_SC_PAGESIZE)
165#endif
83 166
84#define dBUF \ 167/*****************************************************************************/
85 char *aio_buf; \ 168
86 LOCK (wrklock); \ 169static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 170fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 171{
89 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)
90 return -1; 190 return;
91 191
92enum { 192 req->ptr1 = fiemap;
93 REQ_QUIT,
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104};
105 193
106#define AIO_REQ_KLASS "IO::AIO::REQ" 194 fiemap->fm_start = req->offs;
107#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;
108 198
109typedef struct aio_cb 199 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
110{ 200 return;
111 struct aio_cb *volatile next;
112 201
113 SV *data, *callback; 202 if (req->int3 >= 0 /* not autosizing */
114 SV *fh, *fh2; 203 || !fiemap->fm_mapped_extents /* no more extents */
115 void *dataptr, *data2ptr; 204 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
116 Stat_t *statdata; 205 goto done;
117 off_t offset;
118 size_t length;
119 ssize_t result;
120 206
121 STRLEN dataoffset; 207 /* else we have to loop -
122 int type; 208 * it would be tempting (actually I tried that first) to just query the
123 int fd, fd2; 209 * number of extents needed, but linux often feels like not returning all
124 int errorno; 210 * extents, without telling us it left any out. this complicates
125 mode_t mode; /* open */ 211 * this quite a bit.
212 */
126 213
127 unsigned char flags; 214 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
128 unsigned char pri;
129 215
130 SV *self; /* the perl counterpart of this request, if any */ 216 for (;;)
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132} aio_cb;
133
134enum {
135 FLAG_CANCELLED = 0x01,
136};
137
138typedef aio_cb *aio_req;
139typedef aio_cb *aio_req_ornot;
140
141enum {
142 PRI_MIN = -4,
143 PRI_MAX = 4,
144
145 DEFAULT_PRI = 0,
146 PRI_BIAS = -PRI_MIN,
147 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148};
149
150static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152static unsigned int started, idle, wanted;
153
154#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156#else
157# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158#endif
159
160#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163/* worker threads management */
164static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166typedef struct worker {
167 /* locked by wrklock */
168 struct worker *prev, *next;
169
170 pthread_t tid;
171
172 /* locked by reslock, reqlock or wrklock */
173 aio_req req; /* currently processed request */
174 void *dbuf;
175 DIR *dirp;
176} worker;
177
178static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180static void worker_clear (worker *wrk)
181{
182 if (wrk->dirp)
183 { 217 {
184 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) */
185 wrk->dirp = 0; 219 char scratch[3072];
186 } 220 struct fiemap *incmap = (struct fiemap *)scratch;
187 221
188 if (wrk->dbuf) 222 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
189 { 223 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
190 free (wrk->dbuf); 224 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
191 wrk->dbuf = 0; 225 incmap->fm_flags = fiemap->fm_flags;
192 } 226 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
193}
194 227
195static void worker_free (worker *wrk) 228 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
196{
197 wrk->next->prev = wrk->prev;
198 wrk->prev->next = wrk->next;
199
200 free (wrk);
201}
202
203static volatile unsigned int nreqs, nready, npending;
204static volatile unsigned int max_idle = 4;
205static volatile unsigned int max_outstanding = 0xffffffff;
206static int respipe [2];
207
208static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212#if WORDREAD_UNSAFE
213
214static unsigned int get_nready ()
215{
216 unsigned int retval;
217
218 LOCK (reqlock);
219 retval = nready;
220 UNLOCK (reqlock);
221
222 return retval;
223}
224
225static unsigned int get_npending ()
226{
227 unsigned int retval;
228
229 LOCK (reslock);
230 retval = npending;
231 UNLOCK (reslock);
232
233 return retval;
234}
235
236#else
237
238# define get_nready() nready
239# define get_npending() npending
240
241#endif
242
243/*
244 * a somewhat faster data structure might be nice, but
245 * with 8 priorities this actually needs <20 insns
246 * per shift, the most expensive operation.
247 */
248typedef struct {
249 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250 int size;
251} reqq;
252
253static reqq req_queue;
254static reqq res_queue;
255
256int reqq_push (reqq *q, aio_req req)
257{
258 int pri = req->pri;
259 req->next = 0;
260
261 if (q->qe[pri])
262 {
263 q->qe[pri]->next = req;
264 q->qe[pri] = req;
265 }
266 else
267 q->qe[pri] = q->qs[pri] = req;
268
269 return q->size++;
270}
271
272aio_req reqq_shift (reqq *q)
273{
274 int pri;
275
276 if (!q->size)
277 return 0; 229 return;
278 230
279 --q->size; 231 if (!incmap->fm_mapped_extents)
232 goto done;
280 233
281 for (pri = NUM_PRI; pri--; ) 234 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
282 { 235 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
283 aio_req req = q->qs[pri]; 236 errno = ENOMEM;
284
285 if (req) 237 if (!fiemap)
238 return;
239
240 req->ptr1 = fiemap;
241
242 for (count = 0; count < incmap->fm_mapped_extents; ++count)
286 { 243 {
287 if (!(q->qs[pri] = req->next)) 244 struct fiemap_extent *e = incmap->fm_extents + count;
288 q->qe[pri] = 0;
289 245
290 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
291 } 254 }
292 } 255 }
293 256
294 abort (); 257done:
295} 258 req->result = 0;
296 259
297static int poll_cb (int max); 260#else
298static 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
299static void req_free (aio_req req); 281static void req_destroy (aio_req req);
300static void req_cancel (aio_req req); 282static void req_cancel (aio_req req);
301 283
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
302/* must be called at most once */ 298/* must be called at most once */
303static SV *req_sv (aio_req req, const char *klass) 299static SV *
300req_sv (aio_req req, HV *stash)
304{ 301{
305 if (!req->self) 302 if (!req->self)
306 { 303 {
307 req->self = (SV *)newHV (); 304 req->self = (SV *)newHV ();
308 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 305 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
309 } 306 }
310 307
311 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 308 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
312} 309}
313 310
314static 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)
315{ 319{
316 MAGIC *mg; 320 MAGIC *mg;
317 321
318 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")))
319 croak ("object of class " AIO_REQ_KLASS " expected"); 327 croak ("object of class IO::AIO::REQ expected");
320 328
321 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 329 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
322 330
323 return mg ? (aio_req)mg->mg_ptr : 0; 331 return mg ? (aio_req)mg->mg_ptr : 0;
324} 332}
325 333
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
326static void aio_grp_feed (aio_req grp) 371aio_grp_feed (aio_req grp)
327{ 372{
328 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 373 if (grp->sv2 && SvOK (grp->sv2))
329 { 374 {
330 int old_len = grp->length;
331
332 if (grp->fh2 && SvOK (grp->fh2))
333 {
334 dSP; 375 dSP;
335 376
336 ENTER; 377 ENTER;
337 SAVETMPS; 378 SAVETMPS;
338 PUSHMARK (SP); 379 PUSHMARK (SP);
339 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 380 XPUSHs (req_sv (grp, aio_grp_stash));
340 PUTBACK; 381 PUTBACK;
341 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 382 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342 SPAGAIN; 383 SPAGAIN;
343 FREETMPS; 384 FREETMPS;
344 LEAVE; 385 LEAVE;
345 }
346
347 /* stop if no progress has been made */
348 if (old_len == grp->length)
349 {
350 SvREFCNT_dec (grp->fh2);
351 grp->fh2 = 0;
352 break;
353 }
354 } 386 }
355} 387}
356 388
357static void aio_grp_dec (aio_req grp) 389static void
390req_submit (eio_req *req)
358{ 391{
359 --grp->length; 392 eio_submit (req);
360 393
361 /* call feeder, if applicable */ 394 if (expect_false (on_next_submit))
362 aio_grp_feed (grp);
363
364 /* finish, if done */
365 if (!grp->length && grp->fd)
366 { 395 {
367 req_invoke (grp); 396 dSP;
368 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);
369 } 404 }
370} 405}
371 406
407static int
372static void req_invoke (aio_req req) 408req_invoke (eio_req *req)
373{ 409{
374 dSP; 410 if (req->flags & FLAG_SV2_RO_OFF)
411 SvREADONLY_off (req->sv2);
375 412
376 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 413 if (!EIO_CANCELLED (req) && req->callback)
377 { 414 {
415 dSP;
416 static SV *sv_result_cache; /* caches the result integer SV */
417 SV *sv_result;
418
378 ENTER; 419 ENTER;
379 SAVETMPS; 420 SAVETMPS;
380 PUSHMARK (SP); 421 PUSHMARK (SP);
381 EXTEND (SP, 1); 422 EXTEND (SP, 1);
382 423
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
383 switch (req->type) 437 switch (req->type)
384 { 438 {
439 case EIO_WD_OPEN:
440 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
441 break;
442
385 case REQ_READDIR: 443 case EIO_READDIR:
386 { 444 {
387 SV *rv = &PL_sv_undef; 445 SV *rv = &PL_sv_undef;
388 446
389 if (req->result >= 0) 447 if (req->result >= 0)
390 { 448 {
391 int i; 449 int i;
392 char *buf = req->data2ptr; 450 char *names = (char *)req->ptr2;
451 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
393 AV *av = newAV (); 452 AV *av = newAV ();
394 453
395 av_extend (av, req->result - 1); 454 av_extend (av, req->result - 1);
396 455
397 for (i = 0; i < req->result; ++i) 456 for (i = 0; i < req->result; ++i)
398 { 457 {
399 SV *sv = newSVpv (buf, 0); 458 if (req->int1 & EIO_READDIR_DENTS)
459 {
460 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
400 461
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
401 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);
402 buf += SvCUR (sv) + 1; 490 names += SvCUR (name) + 1;
491 }
403 } 492 }
404 493
405 rv = sv_2mortal (newRV_noinc ((SV *)av)); 494 rv = sv_2mortal (newRV_noinc ((SV *)av));
406 } 495 }
407 496
408 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))));
409 } 501 }
410 break; 502 break;
411 503
412 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:
413 { 510 {
414 /* convert fd to fh */ 511 SV *rv = &PL_sv_undef;
415 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));
416 523
417 PUSHs (sv_2mortal (newSViv (req->result))); 524 rv = sv_2mortal (newRV_noinc ((SV *)hv));
418 PUTBACK;
419 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
420 SPAGAIN;
421 525
422 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
423 539
424 PUSHMARK (SP); 540 PUSHs (rv);
425 XPUSHs (sv_2mortal (fh));
426 } 541 }
542
427 break; 543 break;
428 544
429 case REQ_GROUP: 545 case EIO_GROUP:
430 req->fd = 2; /* mark group as finished */ 546 req->int1 = 2; /* mark group as finished */
431 547
432 if (req->data) 548 if (req->sv1)
433 { 549 {
434 int i; 550 int i;
435 AV *av = (AV *)req->data; 551 AV *av = (AV *)req->sv1;
436 552
437 EXTEND (SP, AvFILL (av) + 1); 553 EXTEND (SP, AvFILL (av) + 1);
438 for (i = 0; i <= AvFILL (av); ++i) 554 for (i = 0; i <= AvFILL (av); ++i)
439 PUSHs (*av_fetch (av, i, 0)); 555 PUSHs (*av_fetch (av, i, 0));
440 } 556 }
441 break; 557 break;
442 558
443 case REQ_NOP: 559 case EIO_NOP:
444 case REQ_BUSY: 560 case EIO_BUSY:
445 break; 561 break;
446 562
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
447 default: 640 default:
448 PUSHs (sv_2mortal (newSViv (req->result))); 641 PUSHs (sv_result);
449 break; 642 break;
450 } 643 }
451 644
452 errno = req->errorno; 645 errno = req->errorno;
453 646
454 PUTBACK; 647 PUTBACK;
455 call_sv (req->callback, G_VOID | G_EVAL); 648 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456 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;
457 655
458 FREETMPS; 656 FREETMPS;
459 LEAVE; 657 LEAVE;
658
659 PUTBACK;
460 } 660 }
461 661
462 if (req->grp) 662 return !!SvTRUE (ERRSV);
463 {
464 aio_req grp = req->grp;
465
466 /* unlink request */
467 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470 if (grp->grp_first == req)
471 grp->grp_first = req->grp_next;
472
473 aio_grp_dec (grp);
474 }
475
476 if (SvTRUE (ERRSV))
477 {
478 req_free (req);
479 croak (0);
480 }
481} 663}
482 664
483static void req_free (aio_req req) 665static void
666req_destroy (aio_req req)
484{ 667{
485 if (req->self) 668 if (req->self)
486 { 669 {
487 sv_unmagic (req->self, PERL_MAGIC_ext); 670 sv_unmagic (req->self, PERL_MAGIC_ext);
488 SvREFCNT_dec (req->self); 671 SvREFCNT_dec (req->self);
489 } 672 }
490 673
491 SvREFCNT_dec (req->data);
492 SvREFCNT_dec (req->fh); 674 SvREFCNT_dec (req->sv1);
493 SvREFCNT_dec (req->fh2); 675 SvREFCNT_dec (req->sv2);
676 SvREFCNT_dec (req->sv3);
677 SvREFCNT_dec (req->sv4);
494 SvREFCNT_dec (req->callback); 678 SvREFCNT_dec (req->callback);
495 Safefree (req->statdata);
496 679
497 if (req->type == REQ_READDIR)
498 free (req->data2ptr);
499
500 Safefree (req); 680 free (req);
501} 681}
502 682
683static void
503static void req_cancel_subs (aio_req grp) 684req_cancel_subs (aio_req grp)
504{ 685{
505 aio_req sub;
506
507 if (grp->type != REQ_GROUP) 686 if (grp->type != EIO_GROUP)
508 return; 687 return;
509 688
510 SvREFCNT_dec (grp->fh2); 689 SvREFCNT_dec (grp->sv2);
511 grp->fh2 = 0; 690 grp->sv2 = 0;
512 691
513 for (sub = grp->grp_first; sub; sub = sub->grp_next) 692 eio_grp_cancel (grp);
514 req_cancel (sub);
515} 693}
516 694
517static void req_cancel (aio_req req) 695static void ecb_cold
696create_respipe (void)
518{ 697{
519 req->flags |= FLAG_CANCELLED; 698 if (s_epipe_renew (&respipe))
520 699 croak ("IO::AIO: unable to initialize result pipe");
521 req_cancel_subs (req);
522} 700}
523 701
524static void *aio_proc(void *arg); 702static void
525 703poll_wait (void)
526static void start_thread (void)
527{ 704{
528 sigset_t fullsigset, oldsigset;
529 pthread_attr_t attr;
530
531 worker *wrk = calloc (1, sizeof (worker));
532
533 if (!wrk)
534 croak ("unable to allocate worker thread data");
535
536 pthread_attr_init (&attr);
537 pthread_attr_setstacksize (&attr, STACKSIZE);
538 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539#ifdef PTHREAD_SCOPE_PROCESS
540 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541#endif
542
543 sigfillset (&fullsigset);
544
545 LOCK (wrklock);
546 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
547
548 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
549 {
550 wrk->prev = &wrk_first;
551 wrk->next = wrk_first.next;
552 wrk_first.next->prev = wrk;
553 wrk_first.next = wrk;
554 ++started;
555 }
556 else
557 free (wrk);
558
559 sigprocmask (SIG_SETMASK, &oldsigset, 0);
560 UNLOCK (wrklock);
561}
562
563static void maybe_start_thread ()
564{
565 if (started >= wanted)
566 return;
567
568 /* todo: maybe use idle here, but might be less exact */
569 if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570 return;
571
572 start_thread ();
573}
574
575static void req_send (aio_req req)
576{
577 ++nreqs;
578
579 LOCK (reqlock);
580 ++nready;
581 reqq_push (&req_queue, req);
582 pthread_cond_signal (&reqwait);
583 UNLOCK (reqlock);
584
585 maybe_start_thread ();
586}
587
588static void end_thread (void)
589{
590 aio_req req;
591
592 Newz (0, req, 1, aio_cb);
593
594 req->type = REQ_QUIT;
595 req->pri = PRI_MAX + PRI_BIAS;
596
597 LOCK (reqlock);
598 reqq_push (&req_queue, req);
599 pthread_cond_signal (&reqwait);
600 UNLOCK (reqlock);
601
602 LOCK (wrklock);
603 --started;
604 UNLOCK (wrklock);
605}
606
607static void min_parallel (int nthreads)
608{
609 if (wanted < nthreads)
610 wanted = nthreads;
611}
612
613static void max_parallel (int nthreads)
614{
615 if (wanted > nthreads)
616 wanted = nthreads;
617
618 while (started > wanted)
619 end_thread ();
620}
621
622static void poll_wait ()
623{
624 fd_set rfd;
625
626 while (nreqs) 705 while (eio_nreqs ())
627 { 706 {
628 int size; 707 int size;
629 if (WORDREAD_UNSAFE) LOCK (reslock); 708
709 X_LOCK (EIO_POOL->reslock);
630 size = res_queue.size; 710 size = EIO_POOL->res_queue.size;
631 if (WORDREAD_UNSAFE) UNLOCK (reslock); 711 X_UNLOCK (EIO_POOL->reslock);
632 712
633 if (size) 713 if (size)
634 return; 714 return;
635 715
636 maybe_start_thread (); 716 etp_maybe_start_thread (EIO_POOL);
637 717
638 FD_ZERO(&rfd); 718 s_epipe_wait (&respipe);
639 FD_SET(respipe [0], &rfd);
640
641 select (respipe [0] + 1, &rfd, 0, 0, 0);
642 } 719 }
643} 720}
644 721
645static int poll_cb (int max) 722static int
723poll_cb (void)
646{ 724{
647 dSP;
648 int count = 0;
649 int do_croak = 0;
650 aio_req req;
651
652 for (;;) 725 for (;;)
653 { 726 {
654 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)
655 { 835 {
656 maybe_start_thread (); 836 path = AvARRAY (rv)[1];
837 wdob = AvARRAY (rv)[0];
657 838
658 LOCK (reslock); 839 if (SvOK (wdob))
659 req = reqq_shift (&res_queue);
660
661 if (req)
662 { 840 {
663 --npending; 841 *wd = SvAIO_WD (wdob);
664 842 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
665 if (!res_queue.size)
666 {
667 /* read any signals sent by the worker threads */
668 char buf [32];
669 while (read (respipe [0], buf, 32) == 32)
670 ;
671 }
672 }
673
674 UNLOCK (reslock);
675
676 if (!req)
677 break;
678
679 --nreqs;
680
681 if (req->type == REQ_GROUP && req->length)
682 {
683 req->fd = 1; /* mark request as delayed */
684 continue;
685 } 843 }
686 else 844 else
687 { 845 *wd = EIO_INVALID_WD;
688 if (req->type == REQ_READ)
689 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692 SvREADONLY_off (req->data);
693
694 if (req->statdata)
695 {
696 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697 PL_laststatval = req->result;
698 PL_statcache = *(req->statdata);
699 }
700
701 req_invoke (req);
702
703 count++;
704 }
705
706 req_free (req);
707 } 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 }
708 857
709 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)));
710 break; 881 break;
711 882
712 poll_wait (); 883 default:
713 884 req->type = type_path;
714 max = 0; 885 req_set_path1 (req, fh_or_path);
886 break;
715 } 887 }
716
717 return count;
718} 888}
719 889
720static void create_pipe () 890XS(boot_IO__AIO) ecb_cold;
721{
722 if (pipe (respipe))
723 croak ("unable to initialize result pipe");
724 891
725 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726 croak ("cannot set result pipe to nonblocking mode");
727
728 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729 croak ("cannot set result pipe to nonblocking mode");
730}
731
732/*****************************************************************************/
733/* work around various missing functions */
734
735#if !HAVE_PREADWRITE
736# define pread aio_pread
737# define pwrite aio_pwrite
738
739/*
740 * make our pread/pwrite safe against themselves, but not against
741 * normal read/write by using a mutex. slows down execution a lot,
742 * but that's your problem, not mine.
743 */
744static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747{
748 ssize_t res;
749 off_t ooffset;
750
751 LOCK (preadwritelock);
752 ooffset = lseek (fd, 0, SEEK_CUR);
753 lseek (fd, offset, SEEK_SET);
754 res = read (fd, buf, count);
755 lseek (fd, ooffset, SEEK_SET);
756 UNLOCK (preadwritelock);
757
758 return res;
759}
760
761static ssize_t pwrite (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 = write (fd, buf, count);
770 lseek (fd, offset, SEEK_SET);
771 UNLOCK (preadwritelock);
772
773 return res;
774}
775#endif
776
777#if !HAVE_FDATASYNC
778# define fdatasync fsync
779#endif
780
781#if !HAVE_READAHEAD
782# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785{
786 dBUF;
787
788 while (count > 0)
789 {
790 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792 pread (fd, aio_buf, len, offset);
793 offset += len;
794 count -= len;
795 }
796
797 errno = 0;
798}
799
800#endif
801
802#if !HAVE_READDIR_R
803# define readdir_r aio_readdir_r
804
805static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808{
809 struct dirent *e;
810 int errorno;
811
812 LOCK (readdirlock);
813
814 e = readdir (dirp);
815 errorno = errno;
816
817 if (e)
818 {
819 *res = ent;
820 strcpy (ent->d_name, e->d_name);
821 }
822 else
823 *res = 0;
824
825 UNLOCK (readdirlock);
826
827 errno = errorno;
828 return e ? 0 : -1;
829}
830#endif
831
832/* sendfile always needs emulation */
833static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834{
835 ssize_t res;
836
837 if (!count)
838 return 0;
839
840#if HAVE_SENDFILE
841# if __linux
842 res = sendfile (ofd, ifd, &offset, count);
843
844# elif __freebsd
845 /*
846 * Of course, the freebsd sendfile is a dire hack with no thoughts
847 * wasted on making it similar to other I/O functions.
848 */
849 {
850 off_t sbytes;
851 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852
853 if (res < 0 && sbytes)
854 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855 res = sbytes;
856 }
857
858# elif __hpux
859 res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861# elif __solaris
862 {
863 struct sendfilevec vec;
864 size_t sbytes;
865
866 vec.sfv_fd = ifd;
867 vec.sfv_flag = 0;
868 vec.sfv_off = offset;
869 vec.sfv_len = count;
870
871 res = sendfilev (ofd, &vec, 1, &sbytes);
872
873 if (res < 0 && sbytes)
874 res = sbytes;
875 }
876
877# endif
878#else
879 res = -1;
880 errno = ENOSYS;
881#endif
882
883 if (res < 0
884 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
885#if __solaris
886 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
887#endif
888 )
889 )
890 {
891 /* emulate sendfile. this is a major pain in the ass */
892 dBUF;
893
894 res = 0;
895
896 while (count)
897 {
898 ssize_t cnt;
899
900 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
901
902 if (cnt <= 0)
903 {
904 if (cnt && !res) res = -1;
905 break;
906 }
907
908 cnt = write (ofd, aio_buf, cnt);
909
910 if (cnt <= 0)
911 {
912 if (cnt && !res) res = -1;
913 break;
914 }
915
916 offset += cnt;
917 res += cnt;
918 count -= cnt;
919 }
920 }
921
922 return res;
923}
924
925/* read a full directory */
926static void scandir_ (aio_req req, worker *self)
927{
928 DIR *dirp;
929 union
930 {
931 struct dirent d;
932 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933 } *u;
934 struct dirent *entp;
935 char *name, *names;
936 int memlen = 4096;
937 int memofs = 0;
938 int res = 0;
939 int errorno;
940
941 LOCK (wrklock);
942 self->dirp = dirp = opendir (req->dataptr);
943 self->dbuf = u = malloc (sizeof (*u));
944 req->data2ptr = names = malloc (memlen);
945 UNLOCK (wrklock);
946
947 if (dirp && u && names)
948 for (;;)
949 {
950 errno = 0;
951 readdir_r (dirp, &u->d, &entp);
952
953 if (!entp)
954 break;
955
956 name = entp->d_name;
957
958 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959 {
960 int len = strlen (name) + 1;
961
962 res++;
963
964 while (memofs + len > memlen)
965 {
966 memlen *= 2;
967 LOCK (wrklock);
968 req->data2ptr = names = realloc (names, memlen);
969 UNLOCK (wrklock);
970
971 if (!names)
972 break;
973 }
974
975 memcpy (names + memofs, name, len);
976 memofs += len;
977 }
978 }
979
980 if (errno)
981 res = -1;
982
983 req->result = res;
984}
985
986/*****************************************************************************/
987
988static void *aio_proc (void *thr_arg)
989{
990 aio_req req;
991 struct timespec ts;
992 worker *self = (worker *)thr_arg;
993
994 /* try to distribute timeouts somewhat evenly */
995 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996 * (1000000000UL / 1024UL);
997
998 for (;;)
999 {
1000 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002 LOCK (reqlock);
1003
1004 for (;;)
1005 {
1006 self->req = req = reqq_shift (&req_queue);
1007
1008 if (req)
1009 break;
1010
1011 ++idle;
1012
1013 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014 == ETIMEDOUT)
1015 {
1016 if (idle > max_idle)
1017 {
1018 --idle;
1019 UNLOCK (reqlock);
1020 LOCK (wrklock);
1021 --started;
1022 UNLOCK (wrklock);
1023 goto quit;
1024 }
1025
1026 /* we are allowed to idle, so do so without any timeout */
1027 pthread_cond_wait (&reqwait, &reqlock);
1028 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029 }
1030
1031 --idle;
1032 }
1033
1034 --nready;
1035
1036 UNLOCK (reqlock);
1037
1038 errno = 0; /* strictly unnecessary */
1039
1040 if (!(req->flags & FLAG_CANCELLED))
1041 switch (req->type)
1042 {
1043 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054 case REQ_CLOSE: req->result = close (req->fd); break;
1055 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063 case REQ_FSYNC: req->result = fsync (req->fd); break;
1064 case REQ_READDIR: scandir_ (req, self); break;
1065
1066 case REQ_BUSY:
1067 {
1068 struct timeval tv;
1069
1070 tv.tv_sec = req->fd;
1071 tv.tv_usec = req->fd2;
1072
1073 req->result = select (0, 0, 0, 0, &tv);
1074 }
1075
1076 case REQ_GROUP:
1077 case REQ_NOP:
1078 break;
1079
1080 case REQ_QUIT:
1081 goto quit;
1082
1083 default:
1084 req->result = ENOSYS;
1085 break;
1086 }
1087
1088 req->errorno = errno;
1089
1090 LOCK (reslock);
1091
1092 ++npending;
1093
1094 if (!reqq_push (&res_queue, req))
1095 /* write a dummy byte to the pipe so fh becomes ready */
1096 write (respipe [1], &respipe, 1);
1097
1098 self->req = 0;
1099 worker_clear (self);
1100
1101 UNLOCK (reslock);
1102 }
1103
1104quit:
1105 LOCK (wrklock);
1106 worker_free (self);
1107 UNLOCK (wrklock);
1108
1109 return 0;
1110}
1111
1112/*****************************************************************************/
1113
1114static void atfork_prepare (void)
1115{
1116 LOCK (wrklock);
1117 LOCK (reqlock);
1118 LOCK (reslock);
1119#if !HAVE_PREADWRITE
1120 LOCK (preadwritelock);
1121#endif
1122#if !HAVE_READDIR_R
1123 LOCK (readdirlock);
1124#endif
1125}
1126
1127static void atfork_parent (void)
1128{
1129#if !HAVE_READDIR_R
1130 UNLOCK (readdirlock);
1131#endif
1132#if !HAVE_PREADWRITE
1133 UNLOCK (preadwritelock);
1134#endif
1135 UNLOCK (reslock);
1136 UNLOCK (reqlock);
1137 UNLOCK (wrklock);
1138}
1139
1140static void atfork_child (void)
1141{
1142 aio_req prv;
1143
1144 while (prv = reqq_shift (&req_queue))
1145 req_free (prv);
1146
1147 while (prv = reqq_shift (&res_queue))
1148 req_free (prv);
1149
1150 while (wrk_first.next != &wrk_first)
1151 {
1152 worker *wrk = wrk_first.next;
1153
1154 if (wrk->req)
1155 req_free (wrk->req);
1156
1157 worker_clear (wrk);
1158 worker_free (wrk);
1159 }
1160
1161 started = 0;
1162 idle = 0;
1163 nreqs = 0;
1164 nready = 0;
1165 npending = 0;
1166
1167 close (respipe [0]);
1168 close (respipe [1]);
1169 create_pipe ();
1170
1171 atfork_parent ();
1172}
1173
1174#define dREQ \
1175 aio_req req; \
1176 int req_pri = next_pri; \
1177 next_pri = DEFAULT_PRI + PRI_BIAS; \
1178 \
1179 if (SvOK (callback) && !SvROK (callback)) \
1180 croak ("callback must be undef or of reference type"); \
1181 \
1182 Newz (0, req, 1, aio_cb); \
1183 if (!req) \
1184 croak ("out of memory during aio_req allocation"); \
1185 \
1186 req->callback = newSVsv (callback); \
1187 req->pri = req_pri
1188
1189#define REQ_SEND \
1190 req_send (req); \
1191 \
1192 if (GIMME_V != G_VOID) \
1193 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194
1195MODULE = IO::AIO PACKAGE = IO::AIO 892MODULE = IO::AIO PACKAGE = IO::AIO
1196 893
1197PROTOTYPES: ENABLE 894PROTOTYPES: ENABLE
1198 895
1199BOOT: 896BOOT:
1200{ 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
1201 HV *stash = gv_stashpv ("IO::AIO", 1); 1058 aio_stash = gv_stashpv ("IO::AIO" , 1);
1059 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1060 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1061 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1202 1062
1203 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1063 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1204 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1064 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1205 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1209 1065
1210 create_pipe (); 1066 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1211 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1212}
1213 1067
1068 reinit ();
1069}
1070
1214void 1071void
1215min_parallel (int nthreads) 1072reinit ()
1216 PROTOTYPE: $ 1073 PROTOTYPE:
1217 1074
1218void 1075void
1219max_parallel (int nthreads) 1076max_poll_reqs (unsigned int nreqs)
1220 PROTOTYPE: $
1221
1222int
1223max_outstanding (int maxreqs)
1224 PROTOTYPE: $ 1077 PROTOTYPE: $
1225 CODE: 1078 CODE:
1226 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:
1227 max_outstanding = maxreqs; 1115 max_outstanding = maxreqs;
1228 OUTPUT:
1229 RETVAL
1230 1116
1231void 1117void
1232aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1118aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1233 SV * pathname
1234 int flags
1235 int mode
1236 SV * callback
1237 PROTOTYPE: $$$;$
1238 PPCODE: 1119 PPCODE:
1239{ 1120{
1240 dREQ; 1121 dREQ;
1241 1122
1242 req->type = REQ_OPEN; 1123 req->type = EIO_WD_OPEN;
1243 req->data = newSVsv (pathname); 1124 req_set_path1 (req, pathname);
1244 req->dataptr = SvPVbyte_nolen (req->data);
1245 req->fd = flags;
1246 req->mode = mode;
1247 1125
1248 REQ_SEND; 1126 REQ_SEND;
1249} 1127}
1250 1128
1251void 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
1252aio_close (fh,callback=&PL_sv_undef) 1144aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1253 SV * fh
1254 SV * callback
1255 PROTOTYPE: $;$
1256 ALIAS: 1145 ALIAS:
1257 aio_close = REQ_CLOSE
1258 aio_fsync = REQ_FSYNC 1146 aio_fsync = EIO_FSYNC
1259 aio_fdatasync = REQ_FDATASYNC 1147 aio_fdatasync = EIO_FDATASYNC
1148 aio_syncfs = EIO_SYNCFS
1260 PPCODE: 1149 PPCODE:
1261{ 1150{
1151 int fd = s_fileno_croak (fh, 0);
1262 dREQ; 1152 dREQ;
1263 1153
1264 req->type = ix; 1154 req->type = ix;
1265 req->fh = newSVsv (fh); 1155 req->sv1 = newSVsv (fh);
1266 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1156 req->int1 = fd;
1267 1157
1268 REQ_SEND (req); 1158 REQ_SEND;
1269} 1159}
1270 1160
1271void 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
1272aio_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)
1273 SV * fh
1274 UV offset
1275 UV length
1276 SV * data
1277 UV dataoffset
1278 SV * callback
1279 ALIAS: 1247 ALIAS:
1280 aio_read = REQ_READ 1248 aio_read = EIO_READ
1281 aio_write = REQ_WRITE 1249 aio_write = EIO_WRITE
1282 PROTOTYPE: $$$$$;$
1283 PPCODE: 1250 PPCODE:
1284{ 1251{
1285 aio_req req;
1286 STRLEN svlen; 1252 STRLEN svlen;
1253 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1287 char *svptr = SvPVbyte (data, svlen); 1254 char *svptr = SvPVbyte (data, svlen);
1288 1255 UV len = SvUV (length);
1289 SvUPGRADE (data, SVt_PV);
1290 SvPOK_on (data);
1291 1256
1292 if (dataoffset < 0) 1257 if (dataoffset < 0)
1293 dataoffset += svlen; 1258 dataoffset += svlen;
1294 1259
1295 if (dataoffset < 0 || dataoffset > svlen) 1260 if (dataoffset < 0 || dataoffset > svlen)
1296 croak ("data offset outside of string"); 1261 croak ("dataoffset outside of data scalar");
1297 1262
1298 if (ix == REQ_WRITE) 1263 if (ix == EIO_WRITE)
1299 { 1264 {
1300 /* write: check length and adjust. */ 1265 /* write: check length and adjust. */
1301 if (length < 0 || length + dataoffset > svlen) 1266 if (!SvOK (length) || len + dataoffset > svlen)
1302 length = svlen - dataoffset; 1267 len = svlen - dataoffset;
1303 } 1268 }
1304 else 1269 else
1305 { 1270 {
1306 /* read: grow scalar as necessary */ 1271 /* read: check type and grow scalar as necessary */
1272 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1307 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");
1308 } 1276 }
1309
1310 if (length < 0)
1311 croak ("length must not be negative");
1312 1277
1313 { 1278 {
1314 dREQ; 1279 dREQ;
1315 1280
1316 req->type = ix; 1281 req->type = ix;
1317 req->fh = newSVsv (fh); 1282 req->sv1 = newSVsv (fh);
1318 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1283 req->int1 = fd;
1319 : IoOFP (sv_2io (fh))); 1284 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320 req->offset = offset; 1285 req->size = len;
1321 req->length = length;
1322 req->data = SvREFCNT_inc (data); 1286 req->sv2 = SvREFCNT_inc (data);
1323 req->dataptr = (char *)svptr + dataoffset; 1287 req->ptr2 = (char *)svptr + dataoffset;
1288 req->stroffset = dataoffset;
1324 1289
1325 if (!SvREADONLY (data)) 1290 if (!SvREADONLY (data))
1326 { 1291 {
1327 SvREADONLY_on (data); 1292 SvREADONLY_on (data);
1328 req->data2ptr = (void *)data; 1293 req->flags |= FLAG_SV2_RO_OFF;
1329 } 1294 }
1330 1295
1331 REQ_SEND; 1296 REQ_SEND;
1332 } 1297 }
1333} 1298}
1334 1299
1335void 1300void
1336aio_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)
1337 SV * out_fh 1302 ALIAS:
1338 SV * in_fh 1303 aio_ioctl = EIO_IOCTL
1339 UV in_offset 1304 aio_fcntl = EIO_FCNTL
1340 UV length
1341 SV * callback
1342 PROTOTYPE: $$$$;$
1343 PPCODE: 1305 PPCODE:
1344{ 1306{
1345 dREQ; 1307 int fd = s_fileno_croak (fh, 0);
1308 char *svptr;
1346 1309
1347 req->type = REQ_SENDFILE; 1310 if (SvPOK (arg) || !SvNIOK (arg))
1348 req->fh = newSVsv (out_fh);
1349 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1350 req->fh2 = newSVsv (in_fh);
1351 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1352 req->offset = in_offset;
1353 req->length = length;
1354
1355 REQ_SEND;
1356}
1357
1358void
1359aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1360 SV * fh
1361 UV offset
1362 IV length
1363 SV * callback
1364 PROTOTYPE: $$$;$
1365 PPCODE:
1366{
1367 dREQ;
1368
1369 req->type = REQ_READAHEAD;
1370 req->fh = newSVsv (fh);
1371 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1372 req->offset = offset;
1373 req->length = length;
1374
1375 REQ_SEND;
1376}
1377
1378void
1379aio_stat (fh_or_path,callback=&PL_sv_undef)
1380 SV * fh_or_path
1381 SV * callback
1382 ALIAS:
1383 aio_stat = REQ_STAT
1384 aio_lstat = REQ_LSTAT
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 New (0, req->statdata, 1, Stat_t);
1390 if (!req->statdata)
1391 { 1311 {
1392 req_free (req); 1312 STRLEN svlen;
1393 croak ("out of memory during aio_req->statdata allocation"); 1313 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1394 } 1314#ifdef IOCPARM_LEN
1315 STRLEN need = IOCPARM_LEN (request);
1316#else
1317 STRLEN need = 256;
1318#endif
1395 1319
1396 if (SvPOK (fh_or_path)) 1320 if (svlen < need)
1397 { 1321 svptr = SvGROW (arg, need);
1398 req->type = ix;
1399 req->data = newSVsv (fh_or_path);
1400 req->dataptr = SvPVbyte_nolen (req->data);
1401 } 1322 }
1402 else 1323 else
1324 svptr = (char *)SvIV (arg);
1325
1403 { 1326 {
1327 dREQ;
1328
1404 req->type = REQ_FSTAT; 1329 req->type = ix;
1405 req->fh = newSVsv (fh_or_path); 1330 req->sv1 = newSVsv (fh);
1406 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;
1407 } 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);
1408 1351
1409 REQ_SEND; 1352 REQ_SEND;
1410} 1353}
1411 1354
1412void 1355void
1413aio_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)
1414 SV * pathname 1357 PPCODE:
1415 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)
1416 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:
1417 aio_unlink = REQ_UNLINK 1504 aio_unlink = EIO_UNLINK
1418 aio_rmdir = REQ_RMDIR 1505 aio_rmdir = EIO_RMDIR
1419 aio_readdir = REQ_READDIR 1506 aio_readdir = EIO_READDIR
1420 PPCODE: 1507 PPCODE:
1421{ 1508{
1422 dREQ; 1509 dREQ;
1423 1510
1424 req->type = ix; 1511 req->type = ix;
1425 req->data = newSVsv (pathname); 1512 req_set_path1 (req, pathname);
1426 req->dataptr = SvPVbyte_nolen (req->data); 1513
1427
1428 REQ_SEND; 1514 REQ_SEND;
1429} 1515}
1430 1516
1431void 1517void
1432aio_link (oldpath,newpath,callback=&PL_sv_undef) 1518aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1433 SV * oldpath
1434 SV * newpath
1435 SV * callback
1436 ALIAS: 1519 ALIAS:
1437 aio_link = REQ_LINK 1520 aio_link = EIO_LINK
1438 aio_symlink = REQ_SYMLINK 1521 aio_symlink = EIO_SYMLINK
1439 aio_rename = REQ_RENAME 1522 aio_rename = EIO_RENAME
1440 PPCODE: 1523 PPCODE:
1441{ 1524{
1525 eio_wd wd2 = 0;
1442 dREQ; 1526 dREQ;
1443 1527
1444 req->type = ix; 1528 req->type = ix;
1445 req->fh = newSVsv (oldpath); 1529 req_set_path1 (req, oldpath);
1446 req->data2ptr = SvPVbyte_nolen (req->fh); 1530 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1447 req->data = newSVsv (newpath); 1531 req->int3 = (long)wd2;
1448 req->dataptr = SvPVbyte_nolen (req->data);
1449 1532
1450 REQ_SEND; 1533 REQ_SEND;
1451} 1534}
1452 1535
1453void 1536void
1454aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1537aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1455 SV * pathname
1456 SV * callback
1457 UV mode
1458 UV dev
1459 PPCODE: 1538 PPCODE:
1460{ 1539{
1461 dREQ; 1540 dREQ;
1462 1541
1463 req->type = REQ_MKNOD; 1542 req->type = EIO_MKNOD;
1464 req->data = newSVsv (pathname);
1465 req->dataptr = SvPVbyte_nolen (req->data);
1466 req->mode = (mode_t)mode; 1543 req->int2 = (mode_t)mode;
1467 req->offset = dev; 1544 req->offs = dev;
1545 req_set_path1 (req, pathname);
1468 1546
1469 REQ_SEND; 1547 REQ_SEND;
1470} 1548}
1471 1549
1472void 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
1473aio_busy (delay,callback=&PL_sv_undef) 1648aio_busy (double delay, SV *callback = &PL_sv_undef)
1474 double delay
1475 SV * callback
1476 PPCODE: 1649 PPCODE:
1477{ 1650{
1478 dREQ; 1651 dREQ;
1479 1652
1480 req->type = REQ_BUSY; 1653 req->type = EIO_BUSY;
1481 req->fd = delay < 0. ? 0 : delay; 1654 req->nv1 = delay < 0. ? 0. : delay;
1482 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1483 1655
1484 REQ_SEND; 1656 REQ_SEND;
1485} 1657}
1486 1658
1487void 1659void
1488aio_group (callback=&PL_sv_undef) 1660aio_group (SV *callback = &PL_sv_undef)
1489 SV * callback
1490 PROTOTYPE: ;$
1491 PPCODE: 1661 PPCODE:
1492{ 1662{
1493 dREQ; 1663 dREQ;
1494 1664
1495 req->type = REQ_GROUP; 1665 req->type = EIO_GROUP;
1666
1667 PUTBACK;
1496 req_send (req); 1668 req_submit (req);
1669 SPAGAIN;
1497 1670
1498 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1671 XPUSHs (req_sv (req, aio_grp_stash));
1499} 1672}
1500 1673
1501void 1674void
1502aio_nop (callback=&PL_sv_undef) 1675aio_nop (SV *callback = &PL_sv_undef)
1503 SV * callback 1676 ALIAS:
1677 aio_nop = EIO_NOP
1678 aio_sync = EIO_SYNC
1504 PPCODE: 1679 PPCODE:
1505{ 1680{
1506 dREQ; 1681 dREQ;
1507 1682
1508 req->type = REQ_NOP; 1683 req->type = ix;
1509 1684
1510 REQ_SEND; 1685 REQ_SEND;
1511} 1686}
1512 1687
1513int 1688int
1514aioreq_pri (int pri = 0) 1689aioreq_pri (int pri = NO_INIT)
1515 PROTOTYPE: ;$
1516 CODE: 1690 CODE:
1517 RETVAL = next_pri - PRI_BIAS; 1691 RETVAL = next_pri;
1518 if (items > 0) 1692 if (items > 0)
1519 { 1693 {
1520 if (pri < PRI_MIN) pri = PRI_MIN; 1694 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521 if (pri > PRI_MAX) pri = PRI_MAX; 1695 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522 next_pri = pri + PRI_BIAS; 1696 next_pri = pri;
1523 } 1697 }
1524 OUTPUT: 1698 OUTPUT:
1525 RETVAL 1699 RETVAL
1526 1700
1527void 1701void
1528aioreq_nice (int nice = 0) 1702aioreq_nice (int nice = 0)
1529 CODE: 1703 CODE:
1530 nice = next_pri - nice; 1704 nice = next_pri - nice;
1531 if (nice < PRI_MIN) nice = PRI_MIN; 1705 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532 if (nice > PRI_MAX) nice = PRI_MAX; 1706 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533 next_pri = nice + PRI_BIAS; 1707 next_pri = nice;
1534 1708
1535void 1709void
1536flush () 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 (...)
1537 PROTOTYPE: 1735 PROTOTYPE:
1538 CODE: 1736 CODE:
1539 while (nreqs)
1540 {
1541 poll_wait ();
1542 poll_cb (0); 1737 RETVAL = poll_cb ();
1543 }
1544
1545void
1546poll()
1547 PROTOTYPE:
1548 CODE:
1549 if (nreqs)
1550 {
1551 poll_wait ();
1552 poll_cb (0);
1553 }
1554
1555int
1556poll_fileno()
1557 PROTOTYPE:
1558 CODE:
1559 RETVAL = respipe [0];
1560 OUTPUT: 1738 OUTPUT:
1561 RETVAL 1739 RETVAL
1562 1740
1741void
1742poll_wait ()
1743 CODE:
1744 poll_wait ();
1745
1563int 1746int
1564poll_cb(...) 1747nreqs ()
1565 PROTOTYPE:
1566 CODE: 1748 CODE:
1567 RETVAL = poll_cb (0); 1749 RETVAL = eio_nreqs ();
1568 OUTPUT: 1750 OUTPUT:
1569 RETVAL 1751 RETVAL
1570 1752
1571int 1753int
1572poll_some(int max = 0) 1754nready ()
1573 PROTOTYPE: $
1574 CODE: 1755 CODE:
1575 RETVAL = poll_cb (max); 1756 RETVAL = eio_nready ();
1576 OUTPUT: 1757 OUTPUT:
1577 RETVAL 1758 RETVAL
1578 1759
1579void 1760int
1580poll_wait() 1761npending ()
1581 PROTOTYPE:
1582 CODE: 1762 CODE:
1583 if (nreqs) 1763 RETVAL = eio_npending ();
1584 poll_wait ();
1585
1586int
1587nreqs()
1588 PROTOTYPE:
1589 CODE:
1590 RETVAL = nreqs;
1591 OUTPUT: 1764 OUTPUT:
1592 RETVAL 1765 RETVAL
1593 1766
1594int 1767int
1595nready() 1768nthreads ()
1596 PROTOTYPE:
1597 CODE: 1769 CODE:
1598 RETVAL = get_nready (); 1770 RETVAL = eio_nthreads ();
1599 OUTPUT: 1771 OUTPUT:
1600 RETVAL 1772 RETVAL
1601 1773
1602int 1774int
1603npending() 1775fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1604 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)
1605 CODE: 1822 CODE:
1606 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}
1607 OUTPUT: 1853 OUTPUT:
1608 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;
1609 1969
1610PROTOTYPES: 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}
1611 1999
1612MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2000MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613 2001
1614void 2002void
1615cancel (aio_req_ornot req) 2003cancel (aio_req_ornot req)
1616 CODE: 2004 CODE:
1617 req_cancel (req); 2005 eio_cancel (req);
1618 2006
1619void 2007void
1620cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2008cb (aio_req_ornot req, SV *callback = NO_INIT)
1621 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
1622 SvREFCNT_dec (req->callback); 2018 SvREFCNT_dec (req->callback);
1623 req->callback = newSVsv (callback); 2019 req->callback = SvREFCNT_inc (cb_cv);
2020 }
2021}
1624 2022
1625MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2023MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1626 2024
1627void 2025void
1628add (aio_req grp, ...) 2026add (aio_req grp, ...)
1629 PPCODE: 2027 PPCODE:
1630{ 2028{
1631 int i; 2029 int i;
1632 aio_req req;
1633 2030
1634 if (grp->fd == 2) 2031 if (grp->int1 == 2)
1635 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");
1636 2033
1637 for (i = 1; i < items; ++i ) 2034 for (i = 1; i < items; ++i )
1638 { 2035 {
2036 aio_req req;
2037
1639 if (GIMME_V != G_VOID) 2038 if (GIMME_V != G_VOID)
1640 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2039 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641 2040
1642 req = SvAIO_REQ (ST (i)); 2041 req = SvAIO_REQ (ST (i));
1643 2042
1644 if (req) 2043 if (req)
1645 { 2044 eio_grp_add (grp, req);
1646 ++grp->length;
1647 req->grp = grp;
1648
1649 req->grp_prev = 0;
1650 req->grp_next = grp->grp_first;
1651
1652 if (grp->grp_first)
1653 grp->grp_first->grp_prev = req;
1654
1655 grp->grp_first = req;
1656 }
1657 } 2045 }
1658} 2046}
1659 2047
1660void 2048void
1661cancel_subs (aio_req_ornot req) 2049cancel_subs (aio_req_ornot req)
… …
1670 AV *av; 2058 AV *av;
1671 2059
1672 grp->errorno = errno; 2060 grp->errorno = errno;
1673 2061
1674 av = newAV (); 2062 av = newAV ();
2063 av_extend (av, items - 1);
1675 2064
1676 for (i = 1; i < items; ++i ) 2065 for (i = 1; i < items; ++i )
1677 av_push (av, newSVsv (ST (i))); 2066 av_push (av, newSVsv (ST (i)));
1678 2067
1679 SvREFCNT_dec (grp->data); 2068 SvREFCNT_dec (grp->sv1);
1680 grp->data = (SV *)av; 2069 grp->sv1 = (SV *)av;
1681} 2070}
1682 2071
1683void 2072void
1684errno (aio_req grp, int errorno = errno) 2073errno (aio_req grp, int errorno = errno)
1685 CODE: 2074 CODE:
1686 grp->errorno = errorno; 2075 grp->errorno = errorno;
1687 2076
1688void 2077void
1689limit (aio_req grp, int limit) 2078limit (aio_req grp, int limit)
1690 CODE: 2079 CODE:
1691 grp->fd2 = limit; 2080 eio_grp_limit (grp, limit);
1692 aio_grp_feed (grp);
1693 2081
1694void 2082void
1695feed (aio_req grp, SV *callback=&PL_sv_undef) 2083feed (aio_req grp, SV *callback = &PL_sv_undef)
1696 CODE: 2084 CODE:
1697{ 2085{
1698 SvREFCNT_dec (grp->fh2); 2086 SvREFCNT_dec (grp->sv2);
1699 grp->fh2 = newSVsv (callback); 2087 grp->sv2 = newSVsv (callback);
2088 grp->feed = aio_grp_feed;
1700 2089
1701 if (grp->fd2 <= 0) 2090 if (grp->int2 <= 0)
1702 grp->fd2 = 2; 2091 grp->int2 = 2;
1703 2092
1704 aio_grp_feed (grp); 2093 eio_grp_limit (grp, grp->int2);
1705} 2094}
1706 2095

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