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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.247 by root, Fri Jun 23 22:09:50 2017 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. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
40# include <sys/socket.h> 86 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 SV *sv3, *sv4; \
119 STRLEN stroffset; \
120 SV *self;
121
122#define EIO_NO_WRAPPERS 1
123
124#include "libeio/config.h"
125#include "libeio/eio.h"
126
127static int req_invoke (eio_req *req);
128#define EIO_FINISH(req) req_invoke (req)
129static void req_destroy (eio_req *grp);
130#define EIO_DESTROY(req) req_destroy (req)
131
132#include "libeio/eio.c"
133
134#if !HAVE_POSIX_FADVISE
135# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
136#endif
137
138#if !HAVE_POSIX_MADVISE
139# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
140#endif
141
142#ifndef MAP_ANONYMOUS
143# ifdef MAP_ANON
144# define MAP_ANONYMOUS MAP_ANON
43# else 145# else
44# error sendfile support requested but not available 146# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 147# endif
46#endif 148#endif
47 149
48/* used for struct dirent, AIX doesn't provide it */ 150/* defines all sorts of constants to 0 unless they are already defined */
49#ifndef NAME_MAX 151/* also provides const_iv_ and const_niv_ macros for them */
50# define NAME_MAX 4096 152#include "def0.h"
51#endif
52 153
53#ifndef PTHREAD_STACK_MIN 154#ifndef makedev
54/* care for broken platforms, e.g. windows */ 155# 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 156#endif
157#ifndef major
158# define major(dev) ((dev) >> 8)
76#endif 159#endif
160#ifndef minor
161# define minor(dev) ((dev) & 0xff)
162#endif
77 163
78/* buffer size for various temporary buffers */ 164#if PAGESIZE <= 0
79#define AIO_BUFSIZE 65536 165# define PAGESIZE sysconf (_SC_PAGESIZE)
166#endif
80 167
81#define dBUF \ 168/*****************************************************************************/
82 char *aio_buf; \ 169
83 LOCK (wrklock); \ 170static void
84 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 171fiemap (eio_req *req)
85 UNLOCK (wrklock); \ 172{
86 if (!aio_buf) \ 173 req->result = -1;
174
175#if HAVE_FIEMAP
176 /* assume some c99 */
177 struct fiemap *fiemap = 0;
178 size_t end_offset;
179 int count = req->int3;
180
181 req->flags |= EIO_FLAG_PTR1_FREE;
182
183 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
184 /* increase in 3.5kb steps */
185 if (count < 0)
186 count = 8;
187
188 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
189 errno = ENOMEM;
190 if (!fiemap)
87 return -1; 191 return;
88 192
89enum { 193 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_READDIR,
98 REQ_LINK, REQ_SYMLINK,
99 REQ_GROUP, REQ_NOP,
100 REQ_BUSY,
101};
102 194
103#define AIO_REQ_KLASS "IO::AIO::REQ" 195 fiemap->fm_start = req->offs;
104#define AIO_GRP_KLASS "IO::AIO::GRP" 196 fiemap->fm_length = req->size;
197 fiemap->fm_flags = req->int2;
198 fiemap->fm_extent_count = count;
105 199
106typedef struct aio_cb 200 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
107{ 201 return;
108 struct aio_cb *volatile next;
109 202
110 SV *data, *callback; 203 if (req->int3 >= 0 /* not autosizing */
111 SV *fh, *fh2; 204 || !fiemap->fm_mapped_extents /* no more extents */
112 void *dataptr, *data2ptr; 205 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
113 Stat_t *statdata; 206 goto done;
114 off_t offset;
115 size_t length;
116 ssize_t result;
117 207
118 STRLEN dataoffset; 208 /* else we have to loop -
119 int type; 209 * it would be tempting (actually I tried that first) to just query the
120 int fd, fd2; 210 * number of extents needed, but linux often feels like not returning all
121 int errorno; 211 * extents, without telling us it left any out. this complicates
122 mode_t mode; /* open */ 212 * this quite a bit.
213 */
123 214
124 unsigned char flags; 215 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125 unsigned char pri;
126 216
127 SV *self; /* the perl counterpart of this request, if any */ 217 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;
150static volatile unsigned int nreqs, nready, npending;
151static volatile unsigned int max_outstanding = 0xffffffff;
152static int respipe [2];
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 { 218 {
184 closedir (wrk->dirp); 219 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
185 wrk->dirp = 0; 220 char scratch[3072];
186 } 221 struct fiemap *incmap = (struct fiemap *)scratch;
187 222
188 if (wrk->dbuf) 223 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
189 { 224 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
190 free (wrk->dbuf); 225 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
191 wrk->dbuf = 0; 226 incmap->fm_flags = fiemap->fm_flags;
192 } 227 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
193}
194 228
195static void worker_free (worker *wrk) 229 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 pthread_mutex_t reslock = AIO_MUTEX_INIT;
204static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
206
207/*
208 * a somewhat faster data structure might be nice, but
209 * with 8 priorities this actually needs <20 insns
210 * per shift, the most expensive operation.
211 */
212typedef struct {
213 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214 int size;
215} reqq;
216
217static reqq req_queue;
218static reqq res_queue;
219
220int reqq_push (reqq *q, aio_req req)
221{
222 int pri = req->pri;
223 req->next = 0;
224
225 if (q->qe[pri])
226 {
227 q->qe[pri]->next = req;
228 q->qe[pri] = req;
229 }
230 else
231 q->qe[pri] = q->qs[pri] = req;
232
233 return q->size++;
234}
235
236aio_req reqq_shift (reqq *q)
237{
238 int pri;
239
240 if (!q->size)
241 return 0; 230 return;
242 231
243 --q->size; 232 if (!incmap->fm_mapped_extents)
233 goto done;
244 234
245 for (pri = NUM_PRI; pri--; ) 235 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
246 { 236 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
247 aio_req req = q->qs[pri]; 237 errno = ENOMEM;
248
249 if (req) 238 if (!fiemap)
239 return;
240
241 req->ptr1 = fiemap;
242
243 for (count = 0; count < incmap->fm_mapped_extents; ++count)
250 { 244 {
251 if (!(q->qs[pri] = req->next)) 245 struct fiemap_extent *e = incmap->fm_extents + count;
252 q->qe[pri] = 0;
253 246
254 return req; 247 if (e->fe_logical + e->fe_length >= end_offset)
248 goto done;
249
250 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
251
252 if (e->fe_flags & FIEMAP_EXTENT_LAST)
253 goto done;
254
255 } 255 }
256 } 256 }
257 257
258 abort (); 258done:
259} 259 req->result = 0;
260 260
261static int poll_cb (int max); 261#else
262static void req_invoke (aio_req req); 262 errno = ENOSYS;
263#endif
264}
265
266/*****************************************************************************/
267
268enum {
269 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
270};
271
272typedef eio_req *aio_req;
273typedef eio_req *aio_req_ornot;
274typedef eio_wd aio_wd;
275
276static SV *on_next_submit;
277static int next_pri = EIO_PRI_DEFAULT;
278static int max_outstanding;
279
280static s_epipe respipe;
281
263static void req_free (aio_req req); 282static void req_destroy (aio_req req);
264static void req_cancel (aio_req req); 283static void req_cancel (aio_req req);
265 284
285static void
286want_poll (void)
287{
288 /* write a dummy byte to the pipe so fh becomes ready */
289 s_epipe_signal (&respipe);
290}
291
292static void
293done_poll (void)
294{
295 /* read any signals sent by the worker threads */
296 s_epipe_drain (&respipe);
297}
298
266/* must be called at most once */ 299/* must be called at most once */
267static SV *req_sv (aio_req req, const char *klass) 300static SV *
301req_sv (aio_req req, HV *stash)
268{ 302{
269 if (!req->self) 303 if (!req->self)
270 { 304 {
271 req->self = (SV *)newHV (); 305 req->self = (SV *)newHV ();
272 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 306 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273 } 307 }
274 308
275 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 309 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
276} 310}
277 311
278static aio_req SvAIO_REQ (SV *sv) 312static SV *
313newSVaio_wd (aio_wd wd)
314{
315 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
316}
317
318static aio_req
319SvAIO_REQ (SV *sv)
279{ 320{
280 MAGIC *mg; 321 MAGIC *mg;
281 322
282 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 323 if (!SvROK (sv)
324 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
325 || (SvSTASH (SvRV (sv)) != aio_grp_stash
326 && SvSTASH (SvRV (sv)) != aio_req_stash
327 && !sv_derived_from (sv, "IO::AIO::REQ")))
283 croak ("object of class " AIO_REQ_KLASS " expected"); 328 croak ("object of class IO::AIO::REQ expected");
284 329
285 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 330 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
286 331
287 return mg ? (aio_req)mg->mg_ptr : 0; 332 return mg ? (aio_req)mg->mg_ptr : 0;
288} 333}
289 334
335static aio_wd
336SvAIO_WD (SV *sv)
337{
338 if (!SvROK (sv)
339 || SvTYPE (SvRV (sv)) != SVt_PVMG
340 || SvSTASH (SvRV (sv)) != aio_wd_stash)
341 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
342
343 return (aio_wd)(long)SvIVX (SvRV (sv));
344}
345
346static SV *
347newmortalFH (int fd, int flags)
348{
349 if (fd < 0)
350 return &PL_sv_undef;
351
352 GV *gv = (GV *)sv_newmortal ();
353 char sym[64];
354 int symlen;
355
356 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
357 gv_init (gv, aio_stash, sym, symlen, 0);
358
359 symlen = snprintf (
360 sym,
361 sizeof (sym),
362 "%s&=%d",
363 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
364 fd
365 );
366
367 return do_open (gv, sym, symlen, 0, 0, 0, 0)
368 ? (SV *)gv : &PL_sv_undef;
369}
370
371static void
290static void aio_grp_feed (aio_req grp) 372aio_grp_feed (aio_req grp)
291{ 373{
292 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 374 if (grp->sv2 && SvOK (grp->sv2))
293 { 375 {
294 int old_len = grp->length;
295
296 if (grp->fh2 && SvOK (grp->fh2))
297 {
298 dSP; 376 dSP;
299 377
300 ENTER; 378 ENTER;
301 SAVETMPS; 379 SAVETMPS;
302 PUSHMARK (SP); 380 PUSHMARK (SP);
303 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 381 XPUSHs (req_sv (grp, aio_grp_stash));
304 PUTBACK; 382 PUTBACK;
305 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 383 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306 SPAGAIN; 384 SPAGAIN;
307 FREETMPS; 385 FREETMPS;
308 LEAVE; 386 LEAVE;
309 }
310
311 /* stop if no progress has been made */
312 if (old_len == grp->length)
313 {
314 SvREFCNT_dec (grp->fh2);
315 grp->fh2 = 0;
316 break;
317 }
318 } 387 }
319} 388}
320 389
321static void aio_grp_dec (aio_req grp) 390static void
391req_submit (eio_req *req)
322{ 392{
323 --grp->length; 393 eio_submit (req);
324 394
325 /* call feeder, if applicable */ 395 if (expect_false (on_next_submit))
326 aio_grp_feed (grp);
327
328 /* finish, if done */
329 if (!grp->length && grp->fd)
330 { 396 {
331 req_invoke (grp); 397 dSP;
332 req_free (grp); 398 SV *cb = sv_2mortal (on_next_submit);
399
400 on_next_submit = 0;
401
402 PUSHMARK (SP);
403 PUTBACK;
404 call_sv (cb, G_DISCARD | G_EVAL);
333 } 405 }
334} 406}
335 407
336static void poll_wait () 408static int
409req_invoke (eio_req *req)
337{ 410{
338 fd_set rfd; 411 if (req->flags & FLAG_SV2_RO_OFF)
412 SvREADONLY_off (req->sv2);
339 413
340 while (nreqs) 414 if (!EIO_CANCELLED (req) && req->callback)
341 { 415 {
342 int size;
343 if (WORDREAD_UNSAFE) LOCK (reslock);
344 size = res_queue.size;
345 if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347 if (size)
348 return;
349
350 FD_ZERO(&rfd);
351 FD_SET(respipe [0], &rfd);
352
353 select (respipe [0] + 1, &rfd, 0, 0, 0);
354 }
355}
356
357static void req_invoke (aio_req req)
358{
359 dSP; 416 dSP;
417 static SV *sv_result_cache; /* caches the result integer SV */
418 SV *sv_result;
360 419
361 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362 {
363 ENTER; 420 ENTER;
364 SAVETMPS; 421 SAVETMPS;
365 PUSHMARK (SP); 422 PUSHMARK (SP);
366 EXTEND (SP, 1); 423 EXTEND (SP, 1);
367 424
425 /* do not recreate the result IV from scratch each time */
426 if (expect_true (sv_result_cache))
427 {
428 sv_result = sv_result_cache; sv_result_cache = 0;
429 SvIV_set (sv_result, req->result);
430 SvIOK_only (sv_result);
431 }
432 else
433 {
434 sv_result = newSViv (req->result);
435 SvREADONLY_on (sv_result);
436 }
437
368 switch (req->type) 438 switch (req->type)
369 { 439 {
440 case EIO_WD_OPEN:
441 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
442 break;
443
370 case REQ_READDIR: 444 case EIO_READDIR:
371 { 445 {
372 SV *rv = &PL_sv_undef; 446 SV *rv = &PL_sv_undef;
373 447
374 if (req->result >= 0) 448 if (req->result >= 0)
375 { 449 {
376 int i; 450 int i;
377 char *buf = req->data2ptr; 451 char *names = (char *)req->ptr2;
452 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
378 AV *av = newAV (); 453 AV *av = newAV ();
379 454
380 av_extend (av, req->result - 1); 455 av_extend (av, req->result - 1);
381 456
382 for (i = 0; i < req->result; ++i) 457 for (i = 0; i < req->result; ++i)
383 { 458 {
384 SV *sv = newSVpv (buf, 0); 459 if (req->int1 & EIO_READDIR_DENTS)
460 {
461 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
385 462
463 if (req->int1 & EIO_READDIR_CUSTOM2)
464 {
465 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
466 AV *avent = newAV ();
467
468 av_extend (avent, 2);
469
470 if (!sv_type [ent->type])
471 {
472 sv_type [ent->type] = newSViv (ent->type);
473 SvREADONLY_on (sv_type [ent->type]);
474 }
475
476 av_store (avent, 0, namesv);
477 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
478 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
479
480 av_store (av, i, newRV_noinc ((SV *)avent));
481 }
482 else
386 av_store (av, i, sv); 483 av_store (av, i, namesv);
484
485 ++ent;
486 }
487 else
488 {
489 SV *name = newSVpv (names, 0);
490 av_store (av, i, name);
387 buf += SvCUR (sv) + 1; 491 names += SvCUR (name) + 1;
492 }
388 } 493 }
389 494
390 rv = sv_2mortal (newRV_noinc ((SV *)av)); 495 rv = sv_2mortal (newRV_noinc ((SV *)av));
391 } 496 }
392 497
393 PUSHs (rv); 498 PUSHs (rv);
499
500 if (req->int1 & EIO_READDIR_CUSTOM1)
501 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
394 } 502 }
395 break; 503 break;
396 504
397 case REQ_OPEN: 505 case EIO_OPEN:
506 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
507 break;
508
509 case EIO_STATVFS:
510 case EIO_FSTATVFS:
398 { 511 {
399 /* convert fd to fh */ 512 SV *rv = &PL_sv_undef;
400 SV *fh; 513
514#ifndef _WIN32
515 if (req->result >= 0)
516 {
517 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
518 HV *hv = newHV ();
519 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
520 * chooses to make it a struct.
521 */
522 unsigned long fsid = 0;
523 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
401 524
402 PUSHs (sv_2mortal (newSViv (req->result))); 525 rv = sv_2mortal (newRV_noinc ((SV *)hv));
403 PUTBACK;
404 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
405 SPAGAIN;
406 526
407 fh = SvREFCNT_inc (POPs); 527 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
528 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
529 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
530 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
531 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
532 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
533 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
534 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
535 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
536 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
537 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
538 }
539#endif
408 540
409 PUSHMARK (SP); 541 PUSHs (rv);
410 XPUSHs (sv_2mortal (fh));
411 } 542 }
543
412 break; 544 break;
413 545
414 case REQ_GROUP: 546 case EIO_GROUP:
415 req->fd = 2; /* mark group as finished */ 547 req->int1 = 2; /* mark group as finished */
416 548
417 if (req->data) 549 if (req->sv1)
418 { 550 {
419 int i; 551 int i;
420 AV *av = (AV *)req->data; 552 AV *av = (AV *)req->sv1;
421 553
422 EXTEND (SP, AvFILL (av) + 1); 554 EXTEND (SP, AvFILL (av) + 1);
423 for (i = 0; i <= AvFILL (av); ++i) 555 for (i = 0; i <= AvFILL (av); ++i)
424 PUSHs (*av_fetch (av, i, 0)); 556 PUSHs (*av_fetch (av, i, 0));
425 } 557 }
426 break; 558 break;
427 559
428 case REQ_NOP: 560 case EIO_NOP:
429 case REQ_BUSY: 561 case EIO_BUSY:
430 break; 562 break;
431 563
564 case EIO_READLINK:
565 case EIO_REALPATH:
566 if (req->result > 0)
567 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
568 break;
569
570 case EIO_STAT:
571 case EIO_LSTAT:
572 case EIO_FSTAT:
573 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
574
575 if (!(PL_laststatval = req->result))
576 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
577 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
578
579 PUSHs (sv_result);
580 break;
581
582 case EIO_SEEK:
583 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
584 break;
585
586 case EIO_READ:
587 {
588 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
589 *SvEND (req->sv2) = 0;
590 SvPOK_only (req->sv2);
591 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result);
593 }
594 break;
595
596 case EIO_CUSTOM:
597 if (req->feed == fiemap)
598 {
599#if HAVE_FIEMAP
600 if (!req->result)
601 {
602 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
603
604 if (fiemap->fm_extent_count)
605 {
606 AV *av = newAV ();
607 int i;
608
609 while (fiemap->fm_mapped_extents)
610 {
611 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
612 AV *ext_av = newAV ();
613
614 av_store (ext_av, 3, newSVuv (extent->fe_flags));
615 av_store (ext_av, 2, newSVval64 (extent->fe_length));
616 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
617 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
618
619 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
620 }
621
622 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
623 }
624 else
625 {
626 SvIV_set (sv_result, fiemap->fm_mapped_extents);
627 PUSHs (sv_result);
628 }
629 }
630#endif
631 }
632 else
633 PUSHs (sv_result);
634 break;
635
636 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
637 if (req->result > 0)
638 SvIV_set (sv_result, 0);
639 /* FALLTHROUGH */
640
432 default: 641 default:
433 PUSHs (sv_2mortal (newSViv (req->result))); 642 PUSHs (sv_result);
434 break; 643 break;
435 } 644 }
436 645
437 errno = req->errorno; 646 errno = req->errorno;
438 647
439 PUTBACK; 648 PUTBACK;
440 call_sv (req->callback, G_VOID | G_EVAL); 649 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
441 SPAGAIN; 650 SPAGAIN;
651
652 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
653 SvREFCNT_dec (sv_result);
654 else
655 sv_result_cache = sv_result;
442 656
443 FREETMPS; 657 FREETMPS;
444 LEAVE; 658 LEAVE;
659
660 PUTBACK;
445 } 661 }
446 662
447 if (req->grp) 663 return !!SvTRUE (ERRSV);
448 {
449 aio_req grp = req->grp;
450
451 /* unlink request */
452 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455 if (grp->grp_first == req)
456 grp->grp_first = req->grp_next;
457
458 aio_grp_dec (grp);
459 }
460
461 if (SvTRUE (ERRSV))
462 {
463 req_free (req);
464 croak (0);
465 }
466} 664}
467 665
468static void req_free (aio_req req) 666static void
667req_destroy (aio_req req)
469{ 668{
470 if (req->self) 669 if (req->self)
471 { 670 {
472 sv_unmagic (req->self, PERL_MAGIC_ext); 671 sv_unmagic (req->self, PERL_MAGIC_ext);
473 SvREFCNT_dec (req->self); 672 SvREFCNT_dec (req->self);
474 } 673 }
475 674
476 SvREFCNT_dec (req->data);
477 SvREFCNT_dec (req->fh); 675 SvREFCNT_dec (req->sv1);
478 SvREFCNT_dec (req->fh2); 676 SvREFCNT_dec (req->sv2);
677 SvREFCNT_dec (req->sv3);
678 SvREFCNT_dec (req->sv4);
479 SvREFCNT_dec (req->callback); 679 SvREFCNT_dec (req->callback);
480 Safefree (req->statdata);
481 680
482 if (req->type == REQ_READDIR)
483 free (req->data2ptr);
484
485 Safefree (req); 681 free (req);
486} 682}
487 683
684static void
488static void req_cancel_subs (aio_req grp) 685req_cancel_subs (aio_req grp)
489{ 686{
490 aio_req sub;
491
492 if (grp->type != REQ_GROUP) 687 if (grp->type != EIO_GROUP)
493 return; 688 return;
494 689
495 SvREFCNT_dec (grp->fh2); 690 SvREFCNT_dec (grp->sv2);
496 grp->fh2 = 0; 691 grp->sv2 = 0;
497 692
498 for (sub = grp->grp_first; sub; sub = sub->grp_next) 693 eio_grp_cancel (grp);
499 req_cancel (sub);
500} 694}
501 695
502static void req_cancel (aio_req req) 696static void ecb_cold
697create_respipe (void)
503{ 698{
504 req->flags |= FLAG_CANCELLED; 699 if (s_epipe_renew (&respipe))
505 700 croak ("IO::AIO: unable to initialize result pipe");
506 req_cancel_subs (req);
507} 701}
508 702
509static int poll_cb (int max) 703static void
704poll_wait (void)
510{ 705{
511 dSP; 706 while (eio_nreqs ())
512 int count = 0; 707 {
513 int do_croak = 0; 708 int size;
514 aio_req req;
515 709
710 X_LOCK (EIO_POOL->reslock);
711 size = EIO_POOL->res_queue.size;
712 X_UNLOCK (EIO_POOL->reslock);
713
714 if (size)
715 return;
716
717 etp_maybe_start_thread (EIO_POOL);
718
719 s_epipe_wait (&respipe);
720 }
721}
722
723static int
724poll_cb (void)
725{
516 for (;;) 726 for (;;)
517 { 727 {
518 while (max <= 0 || count < max) 728 int res = eio_poll ();
729
730 if (res > 0)
731 croak (0);
732
733 if (!max_outstanding || max_outstanding > eio_nreqs ())
734 return res;
735
736 poll_wait ();
737 }
738}
739
740static void ecb_cold
741reinit (void)
742{
743 create_respipe ();
744
745 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library");
747}
748
749/*****************************************************************************/
750
751#if !_POSIX_MAPPED_FILES
752# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753# define munmap(addr,length) EIO_ENOSYS ()
754#endif
755
756#if !_POSIX_MEMORY_PROTECTION
757# define mprotect(addr,len,prot) EIO_ENOSYS ()
758#endif
759
760#define MMAP_MAGIC PERL_MAGIC_ext
761
762static int ecb_cold
763mmap_free (pTHX_ SV *sv, MAGIC *mg)
764{
765 int old_errno = errno;
766 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
767 errno = old_errno;
768
769 mg->mg_obj = 0; /* just in case */
770
771 SvREADONLY_off (sv);
772
773 if (SvPVX (sv) != mg->mg_ptr)
774 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
775
776 SvCUR_set (sv, 0);
777 SvPVX (sv) = 0;
778 SvOK_off (sv);
779
780 return 0;
781}
782
783static MGVTBL mmap_vtbl = {
784 0, 0, 0, 0, mmap_free
785};
786
787/*****************************************************************************/
788
789static SV *
790get_cb (SV *cb_sv)
791{
792 SvGETMAGIC (cb_sv);
793 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
794}
795
796static aio_req ecb_noinline
797dreq (SV *callback)
798{
799 SV *cb_cv;
800 aio_req req;
801 int req_pri = next_pri;
802 next_pri = EIO_PRI_DEFAULT;
803
804 cb_cv = get_cb (callback);
805
806 req = calloc (sizeof (*req), 1);
807 if (!req)
808 croak ("out of memory during eio_req allocation");
809
810 req->callback = SvREFCNT_inc (cb_cv);
811 req->pri = req_pri;
812
813 return req;
814}
815
816#define dREQ \
817 aio_req req = dreq (callback); \
818
819#define REQ_SEND \
820 PUTBACK; \
821 req_submit (req); \
822 SPAGAIN; \
823 \
824 if (GIMME_V != G_VOID) \
825 XPUSHs (req_sv (req, aio_req_stash));
826
827ecb_inline void
828req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
829{
830 if (expect_false (SvROK (path)))
831 {
832 SV *rv = SvRV (path);
833 SV *wdob;
834
835 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
519 { 836 {
520 LOCK (reslock); 837 path = AvARRAY (rv)[1];
521 req = reqq_shift (&res_queue); 838 wdob = AvARRAY (rv)[0];
522 839
523 if (req) 840 if (SvOK (wdob))
524 { 841 {
525 --npending; 842 *wd = SvAIO_WD (wdob);
526 843 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
527 if (!res_queue.size)
528 {
529 /* read any signals sent by the worker threads */
530 char buf [32];
531 while (read (respipe [0], buf, 32) == 32)
532 ;
533 }
534 }
535
536 UNLOCK (reslock);
537
538 if (!req)
539 break;
540
541 --nreqs;
542
543 if (req->type == REQ_QUIT)
544 --started;
545 else if (req->type == REQ_GROUP && req->length)
546 {
547 req->fd = 1; /* mark request as delayed */
548 continue;
549 } 844 }
550 else 845 else
551 { 846 *wd = EIO_INVALID_WD;
552 if (req->type == REQ_READ)
553 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556 SvREADONLY_off (req->data);
557
558 if (req->statdata)
559 {
560 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561 PL_laststatval = req->result;
562 PL_statcache = *(req->statdata);
563 }
564
565 req_invoke (req);
566
567 count++;
568 }
569
570 req_free (req);
571 } 847 }
848 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
849 {
850 *wd = (aio_wd)(long)SvIVX (rv);
851 *wdsv = SvREFCNT_inc_NN (rv);
852 *ptr = ".";
853 return; /* path set to "." */
854 }
855 else
856 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
857 }
572 858
573 if (nreqs <= max_outstanding) 859 *pathsv = newSVsv (path);
860 *ptr = SvPVbyte_nolen (*pathsv);
861}
862
863static void ecb_noinline
864req_set_path1 (aio_req req, SV *path)
865{
866 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
867}
868
869static void ecb_noinline
870req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
871{
872 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
873
874 switch (SvTYPE (rv))
875 {
876 case SVt_PVIO:
877 case SVt_PVLV:
878 case SVt_PVGV:
879 req->type = type_fh;
880 req->sv1 = newSVsv (fh_or_path);
881 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
574 break; 882 break;
575 883
576 poll_wait (); 884 default:
577 885 req->type = type_path;
578 max = 0; 886 req_set_path1 (req, fh_or_path);
887 break;
579 } 888 }
580
581 return count;
582} 889}
583 890
584static void *aio_proc(void *arg); 891XS(boot_IO__AIO) ecb_cold;
585 892
586static void start_thread (void)
587{
588 sigset_t fullsigset, oldsigset;
589 pthread_attr_t attr;
590
591 worker *wrk = calloc (1, sizeof (worker));
592
593 if (!wrk)
594 croak ("unable to allocate worker thread data");
595
596 pthread_attr_init (&attr);
597 pthread_attr_setstacksize (&attr, STACKSIZE);
598 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600 sigfillset (&fullsigset);
601
602 LOCK (wrklock);
603 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604
605 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606 {
607 wrk->prev = &wrk_first;
608 wrk->next = wrk_first.next;
609 wrk_first.next->prev = wrk;
610 wrk_first.next = wrk;
611 ++started;
612 }
613 else
614 free (wrk);
615
616 sigprocmask (SIG_SETMASK, &oldsigset, 0);
617 UNLOCK (wrklock);
618}
619
620static void req_send (aio_req req)
621{
622 while (started < wanted && nreqs >= started)
623 start_thread ();
624
625 ++nreqs;
626
627 LOCK (reqlock);
628 ++nready;
629 reqq_push (&req_queue, req);
630 pthread_cond_signal (&reqwait);
631 UNLOCK (reqlock);
632}
633
634static void end_thread (void)
635{
636 aio_req req;
637
638 Newz (0, req, 1, aio_cb);
639
640 req->type = REQ_QUIT;
641 req->pri = PRI_MAX + PRI_BIAS;
642
643 req_send (req);
644}
645
646static void min_parallel (int nthreads)
647{
648 if (wanted < nthreads)
649 wanted = nthreads;
650}
651
652static void max_parallel (int nthreads)
653{
654 int cur = started;
655
656 if (wanted > nthreads)
657 wanted = nthreads;
658
659 while (cur > wanted)
660 {
661 end_thread ();
662 cur--;
663 }
664
665 while (started > wanted)
666 {
667 poll_wait ();
668 poll_cb (0);
669 }
670}
671
672static void create_pipe ()
673{
674 if (pipe (respipe))
675 croak ("unable to initialize result pipe");
676
677 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678 croak ("cannot set result pipe to nonblocking mode");
679
680 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681 croak ("cannot set result pipe to nonblocking mode");
682}
683
684/*****************************************************************************/
685/* work around various missing functions */
686
687#if !HAVE_PREADWRITE
688# define pread aio_pread
689# define pwrite aio_pwrite
690
691/*
692 * make our pread/pwrite safe against themselves, but not against
693 * normal read/write by using a mutex. slows down execution a lot,
694 * but that's your problem, not mine.
695 */
696static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
697
698static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699{
700 ssize_t res;
701 off_t ooffset;
702
703 LOCK (preadwritelock);
704 ooffset = lseek (fd, 0, SEEK_CUR);
705 lseek (fd, offset, SEEK_SET);
706 res = read (fd, buf, count);
707 lseek (fd, ooffset, SEEK_SET);
708 UNLOCK (preadwritelock);
709
710 return res;
711}
712
713static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714{
715 ssize_t res;
716 off_t ooffset;
717
718 LOCK (preadwritelock);
719 ooffset = lseek (fd, 0, SEEK_CUR);
720 lseek (fd, offset, SEEK_SET);
721 res = write (fd, buf, count);
722 lseek (fd, offset, SEEK_SET);
723 UNLOCK (preadwritelock);
724
725 return res;
726}
727#endif
728
729#if !HAVE_FDATASYNC
730# define fdatasync fsync
731#endif
732
733#if !HAVE_READAHEAD
734# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735
736static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737{
738 dBUF;
739
740 while (count > 0)
741 {
742 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
743
744 pread (fd, aio_buf, len, offset);
745 offset += len;
746 count -= len;
747 }
748
749 errno = 0;
750}
751
752#endif
753
754#if !HAVE_READDIR_R
755# define readdir_r aio_readdir_r
756
757static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760{
761 struct dirent *e;
762 int errorno;
763
764 LOCK (readdirlock);
765
766 e = readdir (dirp);
767 errorno = errno;
768
769 if (e)
770 {
771 *res = ent;
772 strcpy (ent->d_name, e->d_name);
773 }
774 else
775 *res = 0;
776
777 UNLOCK (readdirlock);
778
779 errno = errorno;
780 return e ? 0 : -1;
781}
782#endif
783
784/* sendfile always needs emulation */
785static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
786{
787 ssize_t res;
788
789 if (!count)
790 return 0;
791
792#if HAVE_SENDFILE
793# if __linux
794 res = sendfile (ofd, ifd, &offset, count);
795
796# elif __freebsd
797 /*
798 * Of course, the freebsd sendfile is a dire hack with no thoughts
799 * wasted on making it similar to other I/O functions.
800 */
801 {
802 off_t sbytes;
803 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
804
805 if (res < 0 && sbytes)
806 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
807 res = sbytes;
808 }
809
810# elif __hpux
811 res = sendfile (ofd, ifd, offset, count, 0, 0);
812
813# elif __solaris
814 {
815 struct sendfilevec vec;
816 size_t sbytes;
817
818 vec.sfv_fd = ifd;
819 vec.sfv_flag = 0;
820 vec.sfv_off = offset;
821 vec.sfv_len = count;
822
823 res = sendfilev (ofd, &vec, 1, &sbytes);
824
825 if (res < 0 && sbytes)
826 res = sbytes;
827 }
828
829# endif
830#else
831 res = -1;
832 errno = ENOSYS;
833#endif
834
835 if (res < 0
836 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
837#if __solaris
838 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
839#endif
840 )
841 )
842 {
843 /* emulate sendfile. this is a major pain in the ass */
844 dBUF;
845
846 res = 0;
847
848 while (count)
849 {
850 ssize_t cnt;
851
852 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
853
854 if (cnt <= 0)
855 {
856 if (cnt && !res) res = -1;
857 break;
858 }
859
860 cnt = write (ofd, aio_buf, cnt);
861
862 if (cnt <= 0)
863 {
864 if (cnt && !res) res = -1;
865 break;
866 }
867
868 offset += cnt;
869 res += cnt;
870 count -= cnt;
871 }
872 }
873
874 return res;
875}
876
877/* read a full directory */
878static void scandir_ (aio_req req, worker *self)
879{
880 DIR *dirp;
881 union
882 {
883 struct dirent d;
884 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885 } *u;
886 struct dirent *entp;
887 char *name, *names;
888 int memlen = 4096;
889 int memofs = 0;
890 int res = 0;
891 int errorno;
892
893 LOCK (wrklock);
894 self->dirp = dirp = opendir (req->dataptr);
895 self->dbuf = u = malloc (sizeof (*u));
896 req->data2ptr = names = malloc (memlen);
897 UNLOCK (wrklock);
898
899 if (dirp && u && names)
900 for (;;)
901 {
902 errno = 0;
903 readdir_r (dirp, &u->d, &entp);
904
905 if (!entp)
906 break;
907
908 name = entp->d_name;
909
910 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911 {
912 int len = strlen (name) + 1;
913
914 res++;
915
916 while (memofs + len > memlen)
917 {
918 memlen *= 2;
919 LOCK (wrklock);
920 req->data2ptr = names = realloc (names, memlen);
921 UNLOCK (wrklock);
922
923 if (!names)
924 break;
925 }
926
927 memcpy (names + memofs, name, len);
928 memofs += len;
929 }
930 }
931
932 if (errno)
933 res = -1;
934
935 req->result = res;
936}
937
938/*****************************************************************************/
939
940static void *aio_proc (void *thr_arg)
941{
942 aio_req req;
943 int type;
944 worker *self = (worker *)thr_arg;
945
946 do
947 {
948 LOCK (reqlock);
949
950 for (;;)
951 {
952 self->req = req = reqq_shift (&req_queue);
953
954 if (req)
955 break;
956
957 pthread_cond_wait (&reqwait, &reqlock);
958 }
959
960 --nready;
961
962 UNLOCK (reqlock);
963
964 errno = 0; /* strictly unnecessary */
965 type = req->type; /* remember type for QUIT check */
966
967 if (!(req->flags & FLAG_CANCELLED))
968 switch (type)
969 {
970 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
971 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
972
973 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
974 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
975
976 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
977 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
978 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
979
980 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
981 case REQ_CLOSE: req->result = close (req->fd); break;
982 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
983 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
986 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
987
988 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
989 case REQ_FSYNC: req->result = fsync (req->fd); break;
990 case REQ_READDIR: scandir_ (req, self); break;
991
992 case REQ_BUSY:
993 {
994 struct timeval tv;
995
996 tv.tv_sec = req->fd;
997 tv.tv_usec = req->fd2;
998
999 req->result = select (0, 0, 0, 0, &tv);
1000 }
1001
1002 case REQ_GROUP:
1003 case REQ_NOP:
1004 case REQ_QUIT:
1005 break;
1006
1007 default:
1008 req->result = ENOSYS;
1009 break;
1010 }
1011
1012 req->errorno = errno;
1013
1014 LOCK (reslock);
1015
1016 ++npending;
1017
1018 if (!reqq_push (&res_queue, req))
1019 /* write a dummy byte to the pipe so fh becomes ready */
1020 write (respipe [1], &respipe, 1);
1021
1022 self->req = 0;
1023 worker_clear (self);
1024
1025 UNLOCK (reslock);
1026 }
1027 while (type != REQ_QUIT);
1028
1029 LOCK (wrklock);
1030 worker_free (self);
1031 UNLOCK (wrklock);
1032
1033 return 0;
1034}
1035
1036/*****************************************************************************/
1037
1038static void atfork_prepare (void)
1039{
1040 LOCK (wrklock);
1041 LOCK (reqlock);
1042 LOCK (reslock);
1043#if !HAVE_PREADWRITE
1044 LOCK (preadwritelock);
1045#endif
1046#if !HAVE_READDIR_R
1047 LOCK (readdirlock);
1048#endif
1049}
1050
1051static void atfork_parent (void)
1052{
1053#if !HAVE_READDIR_R
1054 UNLOCK (readdirlock);
1055#endif
1056#if !HAVE_PREADWRITE
1057 UNLOCK (preadwritelock);
1058#endif
1059 UNLOCK (reslock);
1060 UNLOCK (reqlock);
1061 UNLOCK (wrklock);
1062}
1063
1064static void atfork_child (void)
1065{
1066 aio_req prv;
1067
1068 while (prv = reqq_shift (&req_queue))
1069 req_free (prv);
1070
1071 while (prv = reqq_shift (&res_queue))
1072 req_free (prv);
1073
1074 while (wrk_first.next != &wrk_first)
1075 {
1076 worker *wrk = wrk_first.next;
1077
1078 if (wrk->req)
1079 req_free (wrk->req);
1080
1081 worker_clear (wrk);
1082 worker_free (wrk);
1083 }
1084
1085 started = 0;
1086 nreqs = 0;
1087
1088 close (respipe [0]);
1089 close (respipe [1]);
1090 create_pipe ();
1091
1092 atfork_parent ();
1093}
1094
1095#define dREQ \
1096 aio_req req; \
1097 int req_pri = next_pri; \
1098 next_pri = DEFAULT_PRI + PRI_BIAS; \
1099 \
1100 if (SvOK (callback) && !SvROK (callback)) \
1101 croak ("callback must be undef or of reference type"); \
1102 \
1103 Newz (0, req, 1, aio_cb); \
1104 if (!req) \
1105 croak ("out of memory during aio_req allocation"); \
1106 \
1107 req->callback = newSVsv (callback); \
1108 req->pri = req_pri
1109
1110#define REQ_SEND \
1111 req_send (req); \
1112 \
1113 if (GIMME_V != G_VOID) \
1114 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1115
1116MODULE = IO::AIO PACKAGE = IO::AIO 893MODULE = IO::AIO PACKAGE = IO::AIO
1117 894
1118PROTOTYPES: ENABLE 895PROTOTYPES: ENABLE
1119 896
1120BOOT: 897BOOT:
1121{ 898{
899 static const struct {
900 const char *name;
901 IV iv;
902 } *civ, const_iv[] = {
903# define const_niv(name, value) { # name, (IV) value },
904# define const_iv(name) { # name, (IV) name },
905# define const_eio(name) { # name, (IV) EIO_ ## name },
906
907 /* you have to re-run ./gendef0 after adding/removing any constants here */
908 /* the first block can be undef if missing */
909 const_iv (ENOSYS)
910 const_iv (EXDEV)
911 const_iv (EBADR)
912
913 /* for lseek */
914 const_iv (SEEK_DATA)
915 const_iv (SEEK_HOLE)
916
917 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
918 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
919 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
920 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
921 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
922 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
923
924 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
925 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
926 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
927 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
928 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
929
930 /* the second block will be 0 when missing */
931 const_iv (O_RDONLY)
932 const_iv (O_WRONLY)
933 const_iv (O_RDWR)
934 const_iv (O_CREAT)
935 const_iv (O_TRUNC)
936 const_iv (O_EXCL)
937 const_iv (O_APPEND)
938
939 const_iv (O_ASYNC)
940 const_iv (O_DIRECT)
941 const_iv (O_NOATIME)
942
943 const_iv (O_CLOEXEC)
944 const_iv (O_NOCTTY)
945 const_iv (O_NOFOLLOW)
946 const_iv (O_NONBLOCK)
947 const_iv (O_EXEC)
948 const_iv (O_SEARCH)
949 const_iv (O_DIRECTORY)
950 const_iv (O_DSYNC)
951 const_iv (O_RSYNC)
952 const_iv (O_SYNC)
953 const_iv (O_PATH)
954 const_iv (O_TMPFILE)
955 const_iv (O_TTY_INIT)
956
957 const_iv (S_IFIFO)
958 const_iv (S_IFCHR)
959 const_iv (S_IFBLK)
960 const_iv (S_IFLNK)
961 const_iv (S_IFREG)
962 const_iv (S_IFDIR)
963 const_iv (S_IFWHT)
964 const_iv (S_IFSOCK)
965 const_iv (S_IFMT)
966
967 const_iv (ST_RDONLY)
968 const_iv (ST_NOSUID)
969 const_iv (ST_NODEV)
970 const_iv (ST_NOEXEC)
971 const_iv (ST_SYNCHRONOUS)
972 const_iv (ST_MANDLOCK)
973 const_iv (ST_WRITE)
974 const_iv (ST_APPEND)
975 const_iv (ST_IMMUTABLE)
976 const_iv (ST_NOATIME)
977 const_iv (ST_NODIRATIME)
978 const_iv (ST_RELATIME)
979
980 const_iv (PROT_NONE)
981 const_iv (PROT_EXEC)
982 const_iv (PROT_READ)
983 const_iv (PROT_WRITE)
984
985 const_iv (MAP_PRIVATE)
986 const_iv (MAP_SHARED)
987 const_iv (MAP_FIXED)
988 const_iv (MAP_ANONYMOUS)
989
990 /* linuxish */
991 const_iv (MAP_LOCKED)
992 const_iv (MAP_NORESERVE)
993 const_iv (MAP_POPULATE)
994 const_iv (MAP_NONBLOCK)
995 const_iv (MAP_GROWSDOWN)
996 const_iv (MAP_32BIT)
997 const_iv (MAP_HUGETLB)
998 const_iv (MAP_STACK)
999
1000 const_iv (F_DUPFD_CLOEXEC)
1001
1002 const_iv (F_OFD_GETLK)
1003 const_iv (F_OFD_SETLK)
1004 const_iv (F_OFD_GETLKW)
1005
1006 const_iv (FIFREEZE)
1007 const_iv (FITHAW)
1008 const_iv (FITRIM)
1009 const_iv (FICLONE)
1010 const_iv (FICLONERANGE)
1011 const_iv (FIDEDUPERANGE)
1012
1013 const_iv (FS_IOC_GETFLAGS)
1014 const_iv (FS_IOC_SETFLAGS)
1015 const_iv (FS_IOC_GETVERSION)
1016 const_iv (FS_IOC_SETVERSION)
1017 const_iv (FS_IOC_FIEMAP)
1018 const_iv (FS_IOC_FSGETXATTR)
1019 const_iv (FS_IOC_FSSETXATTR)
1020 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1021 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1022 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1023
1024 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1025
1026 const_iv (FS_SECRM_FL)
1027 const_iv (FS_UNRM_FL)
1028 const_iv (FS_COMPR_FL)
1029 const_iv (FS_SYNC_FL)
1030 const_iv (FS_IMMUTABLE_FL)
1031 const_iv (FS_APPEND_FL)
1032 const_iv (FS_NODUMP_FL)
1033 const_iv (FS_NOATIME_FL)
1034 const_iv (FS_DIRTY_FL)
1035 const_iv (FS_COMPRBLK_FL)
1036 const_iv (FS_NOCOMP_FL)
1037 const_iv (FS_ENCRYPT_FL)
1038 const_iv (FS_BTREE_FL)
1039 const_iv (FS_INDEX_FL)
1040 const_iv (FS_JOURNAL_DATA_FL)
1041 const_iv (FS_NOTAIL_FL)
1042 const_iv (FS_DIRSYNC_FL)
1043 const_iv (FS_TOPDIR_FL)
1044 const_iv (FS_FL_USER_MODIFIABLE)
1045
1046 const_iv (FS_XFLAG_REALTIME)
1047 const_iv (FS_XFLAG_PREALLOC)
1048 const_iv (FS_XFLAG_IMMUTABLE)
1049 const_iv (FS_XFLAG_APPEND)
1050 const_iv (FS_XFLAG_SYNC)
1051 const_iv (FS_XFLAG_NOATIME)
1052 const_iv (FS_XFLAG_NODUMP)
1053 const_iv (FS_XFLAG_RTINHERIT)
1054 const_iv (FS_XFLAG_PROJINHERIT)
1055 const_iv (FS_XFLAG_NOSYMLINKS)
1056 const_iv (FS_XFLAG_EXTSIZE)
1057 const_iv (FS_XFLAG_EXTSZINHERIT)
1058 const_iv (FS_XFLAG_NODEFRAG)
1059 const_iv (FS_XFLAG_FILESTREAM)
1060 const_iv (FS_XFLAG_DAX)
1061 const_iv (FS_XFLAG_HASATTR)
1062
1063 const_iv (FIEMAP_FLAG_SYNC)
1064 const_iv (FIEMAP_FLAG_XATTR)
1065 const_iv (FIEMAP_FLAGS_COMPAT)
1066 const_iv (FIEMAP_EXTENT_LAST)
1067 const_iv (FIEMAP_EXTENT_UNKNOWN)
1068 const_iv (FIEMAP_EXTENT_DELALLOC)
1069 const_iv (FIEMAP_EXTENT_ENCODED)
1070 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1071 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1072 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1073 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1074 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1075 const_iv (FIEMAP_EXTENT_MERGED)
1076 const_iv (FIEMAP_EXTENT_SHARED)
1077
1078 const_iv (SPLICE_F_MOVE)
1079 const_iv (SPLICE_F_NONBLOCK)
1080 const_iv (SPLICE_F_MORE)
1081 const_iv (SPLICE_F_GIFT)
1082
1083 /* these are libeio constants, and are independent of gendef0 */
1084 const_eio (SEEK_SET)
1085 const_eio (SEEK_CUR)
1086 const_eio (SEEK_END)
1087
1088 const_eio (MCL_FUTURE)
1089 const_eio (MCL_CURRENT)
1090
1091 const_eio (MS_ASYNC)
1092 const_eio (MS_INVALIDATE)
1093 const_eio (MS_SYNC)
1094
1095 const_eio (MT_MODIFY)
1096
1097 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1098 const_eio (SYNC_FILE_RANGE_WRITE)
1099 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1100
1101 const_eio (FALLOC_FL_KEEP_SIZE)
1102 const_eio (FALLOC_FL_PUNCH_HOLE)
1103 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1104 const_eio (FALLOC_FL_ZERO_RANGE)
1105
1106 const_eio (RENAME_NOREPLACE)
1107 const_eio (RENAME_EXCHANGE)
1108 const_eio (RENAME_WHITEOUT)
1109
1110 const_eio (READDIR_DENTS)
1111 const_eio (READDIR_DIRS_FIRST)
1112 const_eio (READDIR_STAT_ORDER)
1113 const_eio (READDIR_FOUND_UNKNOWN)
1114
1115 const_eio (DT_UNKNOWN)
1116 const_eio (DT_FIFO)
1117 const_eio (DT_CHR)
1118 const_eio (DT_DIR)
1119 const_eio (DT_BLK)
1120 const_eio (DT_REG)
1121 const_eio (DT_LNK)
1122 const_eio (DT_SOCK)
1123 const_eio (DT_WHT)
1124 };
1125
1122 HV *stash = gv_stashpv ("IO::AIO", 1); 1126 aio_stash = gv_stashpv ("IO::AIO" , 1);
1123 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1127 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1124 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1128 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1125 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1129 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1126 1130
1127 create_pipe (); 1131 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1128 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1132 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1129}
1130 1133
1134 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1135
1136 reinit ();
1137}
1138
1131void 1139void
1132min_parallel (int nthreads) 1140reinit ()
1133 PROTOTYPE: $ 1141 PROTOTYPE:
1134 1142
1135void 1143void
1136max_parallel (int nthreads) 1144max_poll_reqs (unsigned int nreqs)
1137 PROTOTYPE: $
1138
1139int
1140max_outstanding (int maxreqs)
1141 PROTOTYPE: $ 1145 PROTOTYPE: $
1142 CODE: 1146 CODE:
1143 RETVAL = max_outstanding; 1147 eio_set_max_poll_reqs (nreqs);
1148
1149void
1150max_poll_time (double nseconds)
1151 PROTOTYPE: $
1152 CODE:
1153 eio_set_max_poll_time (nseconds);
1154
1155void
1156min_parallel (unsigned int nthreads)
1157 PROTOTYPE: $
1158 CODE:
1159 eio_set_min_parallel (nthreads);
1160
1161void
1162max_parallel (unsigned int nthreads)
1163 PROTOTYPE: $
1164 CODE:
1165 eio_set_max_parallel (nthreads);
1166
1167void
1168max_idle (unsigned int nthreads)
1169 PROTOTYPE: $
1170 CODE:
1171 eio_set_max_idle (nthreads);
1172
1173void
1174idle_timeout (unsigned int seconds)
1175 PROTOTYPE: $
1176 CODE:
1177 eio_set_idle_timeout (seconds);
1178
1179void
1180max_outstanding (unsigned int maxreqs)
1181 PROTOTYPE: $
1182 CODE:
1144 max_outstanding = maxreqs; 1183 max_outstanding = maxreqs;
1145 OUTPUT:
1146 RETVAL
1147 1184
1148void 1185void
1149aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1186aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1150 SV * pathname
1151 int flags
1152 int mode
1153 SV * callback
1154 PROTOTYPE: $$$;$
1155 PPCODE: 1187 PPCODE:
1156{ 1188{
1157 dREQ; 1189 dREQ;
1158 1190
1159 req->type = REQ_OPEN; 1191 req->type = EIO_WD_OPEN;
1160 req->data = newSVsv (pathname); 1192 req_set_path1 (req, pathname);
1161 req->dataptr = SvPVbyte_nolen (req->data);
1162 req->fd = flags;
1163 req->mode = mode;
1164 1193
1165 REQ_SEND; 1194 REQ_SEND;
1166} 1195}
1167 1196
1168void 1197void
1198aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1199 PPCODE:
1200{
1201 dREQ;
1202
1203 req->type = EIO_OPEN;
1204 req_set_path1 (req, pathname);
1205 req->int1 = flags;
1206 req->int2 = mode;
1207
1208 REQ_SEND;
1209}
1210
1211void
1169aio_close (fh,callback=&PL_sv_undef) 1212aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1170 SV * fh
1171 SV * callback
1172 PROTOTYPE: $;$
1173 ALIAS: 1213 ALIAS:
1174 aio_close = REQ_CLOSE
1175 aio_fsync = REQ_FSYNC 1214 aio_fsync = EIO_FSYNC
1176 aio_fdatasync = REQ_FDATASYNC 1215 aio_fdatasync = EIO_FDATASYNC
1216 aio_syncfs = EIO_SYNCFS
1177 PPCODE: 1217 PPCODE:
1178{ 1218{
1219 int fd = s_fileno_croak (fh, 0);
1179 dREQ; 1220 dREQ;
1180 1221
1181 req->type = ix; 1222 req->type = ix;
1182 req->fh = newSVsv (fh); 1223 req->sv1 = newSVsv (fh);
1183 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1224 req->int1 = fd;
1184 1225
1185 REQ_SEND (req); 1226 REQ_SEND;
1186} 1227}
1187 1228
1188void 1229void
1230aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1231 PPCODE:
1232{
1233 int fd = s_fileno_croak (fh, 0);
1234 dREQ;
1235
1236 req->type = EIO_SYNC_FILE_RANGE;
1237 req->sv1 = newSVsv (fh);
1238 req->int1 = fd;
1239 req->offs = offset;
1240 req->size = nbytes;
1241 req->int2 = flags;
1242
1243 REQ_SEND;
1244}
1245
1246void
1247aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1248 PPCODE:
1249{
1250 int fd = s_fileno_croak (fh, 0);
1251 dREQ;
1252
1253 req->type = EIO_FALLOCATE;
1254 req->sv1 = newSVsv (fh);
1255 req->int1 = fd;
1256 req->int2 = mode;
1257 req->offs = offset;
1258 req->size = len;
1259
1260 REQ_SEND;
1261}
1262
1263void
1264aio_close (SV *fh, SV *callback = &PL_sv_undef)
1265 PPCODE:
1266{
1267 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1268 int fd = s_fileno_croak (fh, 0);
1269 dREQ;
1270
1271 if (expect_false (close_fd < 0))
1272 {
1273 int pipefd [2];
1274
1275 if (
1276#ifdef _WIN32
1277 _pipe (pipefd, 1, _O_BINARY) < 0
1278#else
1279 pipe (pipefd) < 0
1280 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1281#endif
1282 || close (pipefd [1]) < 0
1283 )
1284 abort (); /*D*/
1285
1286 close_fd = pipefd [0];
1287 }
1288
1289 req->type = EIO_DUP2;
1290 req->int1 = close_fd;
1291 req->sv2 = newSVsv (fh);
1292 req->int2 = fd;
1293
1294 REQ_SEND;
1295}
1296
1297void
1298aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1299 PPCODE:
1300{
1301 int fd = s_fileno_croak (fh, 0);
1302 dREQ;
1303
1304 req->type = EIO_SEEK;
1305 req->sv1 = newSVsv (fh);
1306 req->int1 = fd;
1307 req->offs = SvVAL64 (offset);
1308 req->int2 = whence;
1309
1310 REQ_SEND;
1311}
1312
1313void
1189aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1314aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1190 SV * fh
1191 UV offset
1192 UV length
1193 SV * data
1194 UV dataoffset
1195 SV * callback
1196 ALIAS: 1315 ALIAS:
1197 aio_read = REQ_READ 1316 aio_read = EIO_READ
1198 aio_write = REQ_WRITE 1317 aio_write = EIO_WRITE
1199 PROTOTYPE: $$$$$;$
1200 PPCODE: 1318 PPCODE:
1201{ 1319{
1202 aio_req req;
1203 STRLEN svlen; 1320 STRLEN svlen;
1321 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1204 char *svptr = SvPVbyte (data, svlen); 1322 char *svptr = SvPVbyte (data, svlen);
1205 1323 UV len = SvUV (length);
1206 SvUPGRADE (data, SVt_PV);
1207 SvPOK_on (data);
1208 1324
1209 if (dataoffset < 0) 1325 if (dataoffset < 0)
1210 dataoffset += svlen; 1326 dataoffset += svlen;
1211 1327
1212 if (dataoffset < 0 || dataoffset > svlen) 1328 if (dataoffset < 0 || dataoffset > svlen)
1213 croak ("data offset outside of string"); 1329 croak ("dataoffset outside of data scalar");
1214 1330
1215 if (ix == REQ_WRITE) 1331 if (ix == EIO_WRITE)
1216 { 1332 {
1217 /* write: check length and adjust. */ 1333 /* write: check length and adjust. */
1218 if (length < 0 || length + dataoffset > svlen) 1334 if (!SvOK (length) || len + dataoffset > svlen)
1219 length = svlen - dataoffset; 1335 len = svlen - dataoffset;
1220 } 1336 }
1221 else 1337 else
1222 { 1338 {
1223 /* read: grow scalar as necessary */ 1339 /* read: check type and grow scalar as necessary */
1340 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1224 svptr = SvGROW (data, length + dataoffset); 1341 svptr = sv_grow (data, len + dataoffset + 1);
1342 else if (SvCUR (data) < len + dataoffset)
1343 croak ("length + dataoffset outside of scalar, and cannot grow");
1225 } 1344 }
1226
1227 if (length < 0)
1228 croak ("length must not be negative");
1229 1345
1230 { 1346 {
1231 dREQ; 1347 dREQ;
1232 1348
1233 req->type = ix; 1349 req->type = ix;
1234 req->fh = newSVsv (fh); 1350 req->sv1 = newSVsv (fh);
1235 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1351 req->int1 = fd;
1236 : IoOFP (sv_2io (fh))); 1352 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237 req->offset = offset; 1353 req->size = len;
1238 req->length = length;
1239 req->data = SvREFCNT_inc (data); 1354 req->sv2 = SvREFCNT_inc (data);
1240 req->dataptr = (char *)svptr + dataoffset; 1355 req->ptr2 = (char *)svptr + dataoffset;
1356 req->stroffset = dataoffset;
1241 1357
1242 if (!SvREADONLY (data)) 1358 if (!SvREADONLY (data))
1243 { 1359 {
1244 SvREADONLY_on (data); 1360 SvREADONLY_on (data);
1245 req->data2ptr = (void *)data; 1361 req->flags |= FLAG_SV2_RO_OFF;
1246 } 1362 }
1247 1363
1248 REQ_SEND; 1364 REQ_SEND;
1249 } 1365 }
1250} 1366}
1251 1367
1252void 1368void
1253aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1369aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1254 SV * out_fh 1370 ALIAS:
1255 SV * in_fh 1371 aio_ioctl = EIO_IOCTL
1256 UV in_offset 1372 aio_fcntl = EIO_FCNTL
1257 UV length
1258 SV * callback
1259 PROTOTYPE: $$$$;$
1260 PPCODE: 1373 PPCODE:
1261{ 1374{
1262 dREQ; 1375 int fd = s_fileno_croak (fh, 0);
1376 char *svptr;
1263 1377
1264 req->type = REQ_SENDFILE; 1378 if (SvPOK (arg) || !SvNIOK (arg))
1265 req->fh = newSVsv (out_fh);
1266 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1267 req->fh2 = newSVsv (in_fh);
1268 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1269 req->offset = in_offset;
1270 req->length = length;
1271
1272 REQ_SEND;
1273}
1274
1275void
1276aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1277 SV * fh
1278 UV offset
1279 IV length
1280 SV * callback
1281 PROTOTYPE: $$$;$
1282 PPCODE:
1283{
1284 dREQ;
1285
1286 req->type = REQ_READAHEAD;
1287 req->fh = newSVsv (fh);
1288 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1289 req->offset = offset;
1290 req->length = length;
1291
1292 REQ_SEND;
1293}
1294
1295void
1296aio_stat (fh_or_path,callback=&PL_sv_undef)
1297 SV * fh_or_path
1298 SV * callback
1299 ALIAS:
1300 aio_stat = REQ_STAT
1301 aio_lstat = REQ_LSTAT
1302 PPCODE:
1303{
1304 dREQ;
1305
1306 New (0, req->statdata, 1, Stat_t);
1307 if (!req->statdata)
1308 { 1379 {
1309 req_free (req); 1380 STRLEN svlen;
1310 croak ("out of memory during aio_req->statdata allocation"); 1381 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1311 } 1382#ifdef IOCPARM_LEN
1383 STRLEN need = IOCPARM_LEN (request);
1384#else
1385 STRLEN need = 256;
1386#endif
1312 1387
1313 if (SvPOK (fh_or_path)) 1388 if (svlen < need)
1314 { 1389 svptr = SvGROW (arg, need);
1315 req->type = ix;
1316 req->data = newSVsv (fh_or_path);
1317 req->dataptr = SvPVbyte_nolen (req->data);
1318 } 1390 }
1319 else 1391 else
1392 svptr = (char *)SvIV (arg);
1393
1320 { 1394 {
1395 dREQ;
1396
1321 req->type = REQ_FSTAT; 1397 req->type = ix;
1322 req->fh = newSVsv (fh_or_path); 1398 req->sv1 = newSVsv (fh);
1323 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1399 req->int1 = fd;
1400 req->int2 = (long)request;
1401 req->sv2 = SvREFCNT_inc (arg);
1402 req->ptr2 = svptr;
1403
1404 REQ_SEND;
1324 } 1405 }
1406}
1407
1408void
1409aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1410 ALIAS:
1411 aio_readlink = EIO_READLINK
1412 aio_realpath = EIO_REALPATH
1413 PPCODE:
1414{
1415 dREQ;
1416
1417 req->type = ix;
1418 req_set_path1 (req, pathname);
1325 1419
1326 REQ_SEND; 1420 REQ_SEND;
1327} 1421}
1328 1422
1329void 1423void
1330aio_unlink (pathname,callback=&PL_sv_undef) 1424aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1331 SV * pathname 1425 PPCODE:
1332 SV * callback 1426{
1427 int ifd = s_fileno_croak (in_fh , 0);
1428 int ofd = s_fileno_croak (out_fh, 1);
1429 dREQ;
1430
1431 req->type = EIO_SENDFILE;
1432 req->sv1 = newSVsv (out_fh);
1433 req->int1 = ofd;
1434 req->sv2 = newSVsv (in_fh);
1435 req->int2 = ifd;
1436 req->offs = in_offset;
1437 req->size = length;
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1444 PPCODE:
1445{
1446 int fd = s_fileno_croak (fh, 0);
1447 dREQ;
1448
1449 req->type = EIO_READAHEAD;
1450 req->sv1 = newSVsv (fh);
1451 req->int1 = fd;
1452 req->offs = offset;
1453 req->size = length;
1454
1455 REQ_SEND;
1456}
1457
1458void
1459aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1333 ALIAS: 1460 ALIAS:
1461 aio_stat = EIO_STAT
1462 aio_lstat = EIO_LSTAT
1463 aio_statvfs = EIO_STATVFS
1464 PPCODE:
1465{
1466 dREQ;
1467
1468 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1469
1470 REQ_SEND;
1471}
1472
1473UV
1474major (UV dev)
1475 ALIAS:
1476 minor = 1
1477 CODE:
1478 RETVAL = ix ? minor (dev) : major (dev);
1479 OUTPUT:
1480 RETVAL
1481
1482UV
1483makedev (UV maj, UV min)
1484 CODE:
1485 RETVAL = makedev (maj, min);
1486 OUTPUT:
1487 RETVAL
1488
1489void
1490aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1491 PPCODE:
1492{
1493 dREQ;
1494
1495 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1496 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1497 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1498
1499 REQ_SEND;
1500}
1501
1502void
1503aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1504 PPCODE:
1505{
1506 dREQ;
1507
1508 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1509 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1510
1511 REQ_SEND;
1512}
1513
1514void
1515aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1516 PPCODE:
1517{
1518 dREQ;
1519
1520 req->int2 = mode;
1521 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1522
1523 REQ_SEND;
1524}
1525
1526void
1527aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1528 PPCODE:
1529{
1530 dREQ;
1531
1532 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1533 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1534 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1535
1536 REQ_SEND;
1537}
1538
1539void
1540aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1541 PPCODE:
1542{
1543 dREQ;
1544
1545 req->type = EIO_READDIR;
1546 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1547
1548 if (flags & EIO_READDIR_DENTS)
1549 req->int1 |= EIO_READDIR_CUSTOM2;
1550
1551 req_set_path1 (req, pathname);
1552
1553 REQ_SEND;
1554}
1555
1556void
1557aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1558 PPCODE:
1559{
1560 dREQ;
1561
1562 req->type = EIO_MKDIR;
1563 req->int2 = mode;
1564 req_set_path1 (req, pathname);
1565
1566 REQ_SEND;
1567}
1568
1569void
1570aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1571 ALIAS:
1334 aio_unlink = REQ_UNLINK 1572 aio_unlink = EIO_UNLINK
1335 aio_rmdir = REQ_RMDIR 1573 aio_rmdir = EIO_RMDIR
1336 aio_readdir = REQ_READDIR 1574 aio_readdir = EIO_READDIR
1337 PPCODE: 1575 PPCODE:
1338{ 1576{
1339 dREQ; 1577 dREQ;
1340 1578
1341 req->type = ix; 1579 req->type = ix;
1342 req->data = newSVsv (pathname); 1580 req_set_path1 (req, pathname);
1343 req->dataptr = SvPVbyte_nolen (req->data); 1581
1344
1345 REQ_SEND; 1582 REQ_SEND;
1346} 1583}
1347 1584
1348void 1585void
1349aio_link (oldpath,newpath,callback=&PL_sv_undef) 1586aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1350 SV * oldpath
1351 SV * newpath
1352 SV * callback
1353 ALIAS: 1587 ALIAS:
1354 aio_link = REQ_LINK 1588 aio_link = EIO_LINK
1355 aio_symlink = REQ_SYMLINK 1589 aio_symlink = EIO_SYMLINK
1356 aio_rename = REQ_RENAME 1590 aio_rename = EIO_RENAME
1357 PPCODE: 1591 PPCODE:
1358{ 1592{
1593 eio_wd wd2 = 0;
1359 dREQ; 1594 dREQ;
1360 1595
1361 req->type = ix; 1596 req->type = ix;
1362 req->fh = newSVsv (oldpath); 1597 req_set_path1 (req, oldpath);
1363 req->data2ptr = SvPVbyte_nolen (req->fh); 1598 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1364 req->data = newSVsv (newpath); 1599 req->int3 = (long)wd2;
1365 req->dataptr = SvPVbyte_nolen (req->data);
1366 1600
1367 REQ_SEND; 1601 REQ_SEND;
1368} 1602}
1369 1603
1370void 1604void
1371aio_busy (delay,callback=&PL_sv_undef) 1605aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1372 double delay
1373 SV * callback
1374 PPCODE: 1606 PPCODE:
1375{ 1607{
1608 eio_wd wd2 = 0;
1376 dREQ; 1609 dREQ;
1377 1610
1378 req->type = REQ_BUSY; 1611 req->type = EIO_RENAME;
1379 req->fd = delay < 0. ? 0 : delay; 1612 req_set_path1 (req, oldpath);
1380 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1613 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1381 1614 req->int2 = flags;
1615 req->int3 = (long)wd2;
1616
1382 REQ_SEND; 1617 REQ_SEND;
1383} 1618}
1384 1619
1385void 1620void
1386aio_group (callback=&PL_sv_undef) 1621aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1387 SV * callback 1622 PPCODE:
1388 PROTOTYPE: ;$ 1623{
1624 dREQ;
1625
1626 req->type = EIO_MKNOD;
1627 req->int2 = (mode_t)mode;
1628 req->offs = dev;
1629 req_set_path1 (req, pathname);
1630
1631 REQ_SEND;
1632}
1633
1634void
1635aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1636 ALIAS:
1637 aio_mtouch = EIO_MTOUCH
1638 aio_msync = EIO_MSYNC
1389 PPCODE: 1639 PPCODE:
1390{ 1640{
1641 STRLEN svlen;
1642 char *svptr = SvPVbyte (data, svlen);
1643 UV len = SvUV (length);
1644
1645 if (flags < 0)
1646 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1647
1648 if (offset < 0)
1649 offset += svlen;
1650
1651 if (offset < 0 || offset > svlen)
1652 croak ("offset outside of scalar");
1653
1654 if (!SvOK (length) || len + offset > svlen)
1655 len = svlen - offset;
1656
1657 {
1658 dREQ;
1659
1660 req->type = ix;
1661 req->sv2 = SvREFCNT_inc (data);
1662 req->ptr2 = (char *)svptr + offset;
1663 req->size = len;
1664 req->int1 = flags;
1665
1666 REQ_SEND;
1667 }
1668}
1669
1670void
1671aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1672 PPCODE:
1673{
1674 STRLEN svlen;
1675 char *svptr = SvPVbyte (data, svlen);
1676 UV len = SvUV (length);
1677
1678 if (offset < 0)
1679 offset += svlen;
1680
1681 if (offset < 0 || offset > svlen)
1682 croak ("offset outside of scalar");
1683
1684 if (!SvOK (length) || len + offset > svlen)
1685 len = svlen - offset;
1686
1687 {
1688 dREQ;
1689
1690 req->type = EIO_MLOCK;
1691 req->sv2 = SvREFCNT_inc (data);
1692 req->ptr2 = (char *)svptr + offset;
1693 req->size = len;
1694
1695 REQ_SEND;
1696 }
1697}
1698
1699void
1700aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1701 PPCODE:
1702{
1703 dREQ;
1704
1705 req->type = EIO_MLOCKALL;
1706 req->int1 = flags;
1707
1708 REQ_SEND;
1709}
1710
1711void
1712aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1713 PPCODE:
1714{
1715 int fd = s_fileno_croak (fh, 0);
1391 dREQ; 1716 dREQ;
1392 1717
1393 req->type = REQ_GROUP; 1718 req->type = EIO_CUSTOM;
1394 req_send (req); 1719 req->sv1 = newSVsv (fh);
1720 req->int1 = fd;
1395 1721
1396 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1722 req->feed = fiemap;
1397} 1723#if HAVE_FIEMAP
1724 /* keep our fingers crossed that the next two types are 64 bit */
1725 req->offs = start;
1726 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1727 req->int2 = flags;
1728 req->int3 = SvOK (count) ? SvIV (count) : -1;
1729#endif
1398 1730
1731 REQ_SEND;
1732}
1733
1399void 1734void
1400aio_nop (callback=&PL_sv_undef) 1735aio_busy (double delay, SV *callback = &PL_sv_undef)
1401 SV * callback
1402 PPCODE: 1736 PPCODE:
1403{ 1737{
1404 dREQ; 1738 dREQ;
1405 1739
1406 req->type = REQ_NOP; 1740 req->type = EIO_BUSY;
1741 req->nv1 = delay < 0. ? 0. : delay;
1407 1742
1408 REQ_SEND; 1743 REQ_SEND;
1409} 1744}
1410 1745
1746void
1747aio_group (SV *callback = &PL_sv_undef)
1748 PPCODE:
1749{
1750 dREQ;
1751
1752 req->type = EIO_GROUP;
1753
1754 PUTBACK;
1755 req_submit (req);
1756 SPAGAIN;
1757
1758 XPUSHs (req_sv (req, aio_grp_stash));
1759}
1760
1761void
1762aio_nop (SV *callback = &PL_sv_undef)
1763 ALIAS:
1764 aio_nop = EIO_NOP
1765 aio_sync = EIO_SYNC
1766 PPCODE:
1767{
1768 dREQ;
1769
1770 req->type = ix;
1771
1772 REQ_SEND;
1773}
1774
1411int 1775int
1412aioreq_pri (int pri = 0) 1776aioreq_pri (int pri = NO_INIT)
1413 PROTOTYPE: ;$
1414 CODE: 1777 CODE:
1415 RETVAL = next_pri - PRI_BIAS; 1778 RETVAL = next_pri;
1416 if (items > 0) 1779 if (items > 0)
1417 { 1780 {
1418 if (pri < PRI_MIN) pri = PRI_MIN; 1781 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419 if (pri > PRI_MAX) pri = PRI_MAX; 1782 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420 next_pri = pri + PRI_BIAS; 1783 next_pri = pri;
1421 } 1784 }
1422 OUTPUT: 1785 OUTPUT:
1423 RETVAL 1786 RETVAL
1424 1787
1425void 1788void
1426aioreq_nice (int nice = 0) 1789aioreq_nice (int nice = 0)
1427 CODE: 1790 CODE:
1428 nice = next_pri - nice; 1791 nice = next_pri - nice;
1429 if (nice < PRI_MIN) nice = PRI_MIN; 1792 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430 if (nice > PRI_MAX) nice = PRI_MAX; 1793 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431 next_pri = nice + PRI_BIAS; 1794 next_pri = nice;
1432 1795
1433void 1796void
1434flush () 1797flush ()
1798 CODE:
1799 while (eio_nreqs ())
1800 {
1801 poll_wait ();
1802 poll_cb ();
1803 }
1804
1805int
1806poll ()
1807 CODE:
1808 poll_wait ();
1809 RETVAL = poll_cb ();
1810 OUTPUT:
1811 RETVAL
1812
1813int
1814poll_fileno ()
1815 CODE:
1816 RETVAL = s_epipe_fd (&respipe);
1817 OUTPUT:
1818 RETVAL
1819
1820int
1821poll_cb (...)
1435 PROTOTYPE: 1822 PROTOTYPE:
1436 CODE: 1823 CODE:
1437 while (nreqs)
1438 {
1439 poll_wait ();
1440 poll_cb (0); 1824 RETVAL = poll_cb ();
1441 }
1442
1443void
1444poll()
1445 PROTOTYPE:
1446 CODE:
1447 if (nreqs)
1448 {
1449 poll_wait ();
1450 poll_cb (0);
1451 }
1452
1453int
1454poll_fileno()
1455 PROTOTYPE:
1456 CODE:
1457 RETVAL = respipe [0];
1458 OUTPUT: 1825 OUTPUT:
1459 RETVAL 1826 RETVAL
1460 1827
1828void
1829poll_wait ()
1830 CODE:
1831 poll_wait ();
1832
1461int 1833int
1462poll_cb(...) 1834nreqs ()
1463 PROTOTYPE:
1464 CODE: 1835 CODE:
1465 RETVAL = poll_cb (0); 1836 RETVAL = eio_nreqs ();
1466 OUTPUT: 1837 OUTPUT:
1467 RETVAL 1838 RETVAL
1468 1839
1469int 1840int
1470poll_some(int max = 0) 1841nready ()
1471 PROTOTYPE: $
1472 CODE: 1842 CODE:
1473 RETVAL = poll_cb (max); 1843 RETVAL = eio_nready ();
1474 OUTPUT: 1844 OUTPUT:
1475 RETVAL 1845 RETVAL
1476 1846
1477void 1847int
1478poll_wait() 1848npending ()
1479 PROTOTYPE:
1480 CODE: 1849 CODE:
1481 if (nreqs) 1850 RETVAL = eio_npending ();
1482 poll_wait ();
1483
1484int
1485nreqs()
1486 PROTOTYPE:
1487 CODE:
1488 RETVAL = nreqs;
1489 OUTPUT: 1851 OUTPUT:
1490 RETVAL 1852 RETVAL
1491 1853
1492int 1854int
1493nready() 1855nthreads ()
1494 PROTOTYPE:
1495 CODE: 1856 CODE:
1496 if (WORDREAD_UNSAFE) LOCK (reqlock);
1497 RETVAL = nready; 1857 RETVAL = eio_nthreads ();
1498 if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499 OUTPUT: 1858 OUTPUT:
1500 RETVAL 1859 RETVAL
1501 1860
1502int 1861int
1503npending() 1862fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1504 PROTOTYPE: 1863 CODE:
1864 RETVAL = posix_fadvise (fh, offset, length, advice);
1865 OUTPUT:
1866 RETVAL
1867
1868IV
1869sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1870 CODE:
1871 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1872 OUTPUT:
1873 RETVAL
1874
1875void
1876mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1877 PPCODE:
1878 sv_unmagic (scalar, MMAP_MAGIC);
1879{
1880 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1881 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1882 if (addr == (void *)-1)
1883 XSRETURN_NO;
1884
1885 sv_force_normal (scalar);
1886
1887 /* we store the length in mg_obj, as namlen is I32 :/ */
1888 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1889 ->mg_obj = (SV *)length;
1890
1891 SvUPGRADE (scalar, SVt_PV); /* nop... */
1892
1893 if (!(prot & PROT_WRITE))
1894 SvREADONLY_on (scalar);
1895
1896 if (SvLEN (scalar))
1897 Safefree (SvPVX (scalar));
1898
1899 SvPVX (scalar) = (char *)addr;
1900 SvCUR_set (scalar, length);
1901 SvLEN_set (scalar, 0);
1902 SvPOK_only (scalar);
1903
1904 XSRETURN_YES;
1905}
1906
1907void
1908munmap (SV *scalar)
1505 CODE: 1909 CODE:
1506 if (WORDREAD_UNSAFE) LOCK (reslock); 1910 sv_unmagic (scalar, MMAP_MAGIC);
1507 RETVAL = npending; 1911
1508 if (WORDREAD_UNSAFE) UNLOCK (reslock); 1912int
1913madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1914 ALIAS:
1915 mprotect = 1
1916 CODE:
1917{
1918 STRLEN svlen;
1919 void *addr = SvPVbyte (scalar, svlen);
1920 STRLEN len = SvUV (length);
1921
1922 if (offset < 0)
1923 offset += svlen;
1924
1925 if (offset < 0 || offset > svlen)
1926 croak ("offset outside of scalar");
1927
1928 if (!SvOK (length) || len + offset > svlen)
1929 len = svlen - offset;
1930
1931 addr = (void *)(((intptr_t)addr) + offset);
1932 eio_page_align (&addr, &len);
1933
1934 switch (ix)
1935 {
1936 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1937 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1938 }
1939}
1509 OUTPUT: 1940 OUTPUT:
1510 RETVAL 1941 RETVAL
1942
1943int
1944munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1945 CODE:
1946{
1947 STRLEN svlen;
1948 void *addr = SvPVbyte (scalar, svlen);
1949 size_t len = SvUV (length);
1950
1951 if (offset < 0)
1952 offset += svlen;
1953
1954 if (offset < 0 || offset > svlen)
1955 croak ("offset outside of scalar");
1956
1957 if (!SvOK (length) || len + offset > svlen)
1958 len = svlen - offset;
1959
1960 addr = (void *)(((intptr_t)addr) + offset);
1961 eio_page_align (&addr, &len);
1962#if _POSIX_MEMLOCK_RANGE
1963 RETVAL = munlock (addr, len);
1964#else
1965 RETVAL = EIO_ENOSYS ();
1966#endif
1967}
1968 OUTPUT:
1969 RETVAL
1970
1971int
1972munlockall ()
1973 CODE:
1974#if _POSIX_MEMLOCK
1975 munlockall ();
1976#else
1977 RETVAL = EIO_ENOSYS ();
1978#endif
1979 OUTPUT:
1980 RETVAL
1981
1982int
1983splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1984 CODE:
1985{
1986#if HAVE_LINUX_SPLICE
1987 loff_t off_in_, off_out_;
1988 RETVAL = splice (
1989 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1990 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1991 length, flags
1992 );
1993#else
1994 RETVAL = EIO_ENOSYS ();
1995#endif
1996}
1997 OUTPUT:
1998 RETVAL
1999
2000int
2001tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2002 CODE:
2003#if HAVE_LINUX_SPLICE
2004 RETVAL = tee (rfh, wfh, length, flags);
2005#else
2006 RETVAL = EIO_ENOSYS ();
2007#endif
2008 OUTPUT:
2009 RETVAL
2010
2011int
2012pipesize (aio_rfd rfh, int new_size = -1)
2013 PROTOTYPE: $;$
2014 CODE:
2015#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2016 if (new_size >= 0)
2017 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2018 else
2019 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2020#else
2021 errno = ENOSYS;
2022 RETVAL = -1;
2023#endif
2024 OUTPUT:
2025 RETVAL
2026
2027void
2028pipe2 (int flags = 0)
2029 PROTOTYPE: ;$
2030 PPCODE:
2031{
2032 int fd[2];
2033 int res;
2034
2035 if (flags)
2036#if HAVE_PIPE2
2037 res = pipe2 (fd, flags);
2038#else
2039 res = (errno = ENOSYS, -1);
2040#endif
2041 else
2042 res = pipe (fd);
2043
2044 if (!res)
2045 {
2046 EXTEND (SP, 2);
2047 PUSHs (newmortalFH (fd[0], O_RDONLY));
2048 PUSHs (newmortalFH (fd[1], O_WRONLY));
2049 }
2050}
2051
2052void _on_next_submit (SV *cb)
2053 CODE:
2054 SvREFCNT_dec (on_next_submit);
2055 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1511 2056
1512PROTOTYPES: DISABLE 2057PROTOTYPES: DISABLE
2058
2059MODULE = IO::AIO PACKAGE = IO::AIO::WD
2060
2061BOOT:
2062{
2063 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2064 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2065}
2066
2067void
2068DESTROY (SV *self)
2069 CODE:
2070{
2071 aio_wd wd = SvAIO_WD (self);
2072#if HAVE_AT
2073 {
2074 SV *callback = &PL_sv_undef;
2075 dREQ; /* clobbers next_pri :/ */
2076 next_pri = req->pri; /* restore next_pri */
2077 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2078 req->type = EIO_WD_CLOSE;
2079 req->wd = wd;
2080 REQ_SEND;
2081 }
2082#else
2083 eio_wd_close_sync (wd);
2084#endif
2085}
1513 2086
1514MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2087MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515 2088
1516void 2089void
1517cancel (aio_req_ornot req) 2090cancel (aio_req_ornot req)
1518 CODE: 2091 CODE:
1519 req_cancel (req); 2092 eio_cancel (req);
1520 2093
1521void 2094void
1522cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2095cb (aio_req_ornot req, SV *callback = NO_INIT)
1523 CODE: 2096 PPCODE:
2097{
2098 if (GIMME_V != G_VOID)
2099 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2100
2101 if (items > 1)
2102 {
2103 SV *cb_cv = get_cb (callback);
2104
1524 SvREFCNT_dec (req->callback); 2105 SvREFCNT_dec (req->callback);
1525 req->callback = newSVsv (callback); 2106 req->callback = SvREFCNT_inc (cb_cv);
2107 }
2108}
1526 2109
1527MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2110MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528 2111
1529void 2112void
1530add (aio_req grp, ...) 2113add (aio_req grp, ...)
1531 PPCODE: 2114 PPCODE:
1532{ 2115{
1533 int i; 2116 int i;
1534 aio_req req;
1535 2117
1536 if (grp->fd == 2) 2118 if (grp->int1 == 2)
1537 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2119 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538 2120
1539 for (i = 1; i < items; ++i ) 2121 for (i = 1; i < items; ++i )
1540 { 2122 {
2123 aio_req req;
2124
1541 if (GIMME_V != G_VOID) 2125 if (GIMME_V != G_VOID)
1542 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2126 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543 2127
1544 req = SvAIO_REQ (ST (i)); 2128 req = SvAIO_REQ (ST (i));
1545 2129
1546 if (req) 2130 if (req)
1547 { 2131 eio_grp_add (grp, req);
1548 ++grp->length;
1549 req->grp = grp;
1550
1551 req->grp_prev = 0;
1552 req->grp_next = grp->grp_first;
1553
1554 if (grp->grp_first)
1555 grp->grp_first->grp_prev = req;
1556
1557 grp->grp_first = req;
1558 }
1559 } 2132 }
1560} 2133}
1561 2134
1562void 2135void
1563cancel_subs (aio_req_ornot req) 2136cancel_subs (aio_req_ornot req)
… …
1572 AV *av; 2145 AV *av;
1573 2146
1574 grp->errorno = errno; 2147 grp->errorno = errno;
1575 2148
1576 av = newAV (); 2149 av = newAV ();
2150 av_extend (av, items - 1);
1577 2151
1578 for (i = 1; i < items; ++i ) 2152 for (i = 1; i < items; ++i )
1579 av_push (av, newSVsv (ST (i))); 2153 av_push (av, newSVsv (ST (i)));
1580 2154
1581 SvREFCNT_dec (grp->data); 2155 SvREFCNT_dec (grp->sv1);
1582 grp->data = (SV *)av; 2156 grp->sv1 = (SV *)av;
1583} 2157}
1584 2158
1585void 2159void
1586errno (aio_req grp, int errorno = errno) 2160errno (aio_req grp, int errorno = errno)
1587 CODE: 2161 CODE:
1588 grp->errorno = errorno; 2162 grp->errorno = errorno;
1589 2163
1590void 2164void
1591limit (aio_req grp, int limit) 2165limit (aio_req grp, int limit)
1592 CODE: 2166 CODE:
1593 grp->fd2 = limit; 2167 eio_grp_limit (grp, limit);
1594 aio_grp_feed (grp);
1595 2168
1596void 2169void
1597feed (aio_req grp, SV *callback=&PL_sv_undef) 2170feed (aio_req grp, SV *callback = &PL_sv_undef)
1598 CODE: 2171 CODE:
1599{ 2172{
1600 SvREFCNT_dec (grp->fh2); 2173 SvREFCNT_dec (grp->sv2);
1601 grp->fh2 = newSVsv (callback); 2174 grp->sv2 = newSVsv (callback);
2175 grp->feed = aio_grp_feed;
1602 2176
1603 if (grp->fd2 <= 0) 2177 if (grp->int2 <= 0)
1604 grp->fd2 = 2; 2178 grp->int2 = 2;
1605 2179
1606 aio_grp_feed (grp); 2180 eio_grp_limit (grp, grp->int2);
1607} 2181}
1608 2182

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