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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.67 by root, Tue Oct 24 03:17:39 2006 UTC vs.
Revision 1.260 by root, Tue Jul 24 04:58:59 2018 UTC

1#if __linux 1#include "libeio/xthread.h"
2# define _GNU_SOURCE
3#endif
4
5#define _REENTRANT 1
6 2
7#include <errno.h> 3#include <errno.h>
8 4
9#include "EXTERN.h" 5#include "EXTERN.h"
10#include "perl.h" 6#include "perl.h"
11#include "XSUB.h" 7#include "XSUB.h"
12 8
13#include "autoconf/config.h" 9#if !defined mg_findext
14 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
15#include <pthread.h> 11#endif
16 12
17#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
18#include <errno.h> 15#include <errno.h>
19#include <sys/time.h>
20#include <sys/select.h>
21#include <sys/types.h> 16#include <sys/types.h>
22#include <sys/stat.h> 17#include <sys/stat.h>
23#include <limits.h> 18#include <limits.h>
24#include <unistd.h>
25#include <fcntl.h> 19#include <fcntl.h>
26#include <signal.h>
27#include <sched.h> 20#include <sched.h>
28 21
29#if HAVE_SENDFILE 22#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30# if __linux
31# include <sys/sendfile.h>
32# elif __freebsd
33# include <sys/socket.h>
34# include <sys/uio.h> 23# include <sys/mman.h>
35# elif __hpux 24#endif
25
26/* the incompetent fool that created musl keeps __linux__, refuses
27 * to implement any linux standard apis, and also has no way to test
28 * for his broken iplementation. don't complain to me if this fails
29 * for you.
30 */
31#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
32# include <linux/fs.h>
33# ifdef FS_IOC_FIEMAP
34# include <linux/types.h>
35# include <linux/fiemap.h>
36# define HAVE_FIEMAP 1
37# endif
38#endif
39
40/* perl namespace pollution */
41#undef VERSION
42
43/* perl stupidly overrides readdir and maybe others */
44/* with thread-unsafe versions, imagine that :( */
45#undef readdir
46#undef opendir
47#undef closedir
48
49#ifdef _WIN32
50
51 // perl overrides all those nice libc functions
52
53 #undef malloc
54 #undef free
55 #undef open
56 #undef read
57 #undef write
58 #undef send
59 #undef recv
60 #undef stat
61 #undef lstat
62 #undef fstat
63 #undef truncate
64 #undef ftruncate
65 #undef open
66 #undef link
67 #undef close
68 #undef unlink
69 #undef mkdir
70 #undef rmdir
71 #undef rename
72 #undef lseek
73 #undef opendir
74 #undef readdir
75 #undef closedir
76 #undef chmod
77 #undef fchmod
78 #undef dup
79 #undef dup2
80 #undef abort
81 #undef pipe
82
83 #define EIO_STRUCT_STAT struct _stati64
84 #define EIO_STRUCT_STATI64
85
86#else
87
36# include <sys/socket.h> 88 #include <sys/time.h>
37# elif __solaris /* not yet */
38# include <sys/sendfile.h> 89 #include <sys/select.h>
90 #include <unistd.h>
91 #include <utime.h>
92 #include <signal.h>
93
94 #define EIO_STRUCT_STAT Stat_t
95
96#endif
97
98/*****************************************************************************/
99
100#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value))
102#else
103# define expect(expr,value) (expr)
104#endif
105
106#define expect_false(expr) expect ((expr) != 0, 0)
107#define expect_true(expr) expect ((expr) != 0, 1)
108
109/*****************************************************************************/
110
111#include "libeio/config.h"
112
113#include "schmorp.h"
114
115#if HAVE_EVENTFD
116# include <sys/eventfd.h>
117#endif
118
119#if HAVE_TIMERFD
120# include <sys/timerfd.h>
121#endif
122
123#if HAVE_RLIMITS
124 #include <sys/time.h>
125 #include <sys/resource.h>
126#endif
127
128typedef SV SV8; /* byte-sv, used for argument-checking */
129typedef int aio_rfd; /* read file desriptor */
130typedef int aio_wfd; /* write file descriptor */
131
132static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
133
134#define EIO_REQ_MEMBERS \
135 SV *callback; \
136 SV *sv1, *sv2; \
137 SV *sv3, *sv4; \
138 STRLEN stroffset; \
139 SV *self;
140
141#define EIO_NO_WRAPPERS 1
142
143#include "libeio/eio.h"
144
145static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp);
148#define EIO_DESTROY(req) req_destroy (req)
149
150#include "libeio/eio.c"
151
152#if !HAVE_POSIX_FADVISE
153# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
154#endif
155
156#if !HAVE_POSIX_MADVISE
157# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
158#endif
159
160#ifndef MAP_ANONYMOUS
161# ifdef MAP_ANON
162# define MAP_ANONYMOUS MAP_ANON
39# else 163# else
40# error sendfile support requested but not available 164# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41# endif 165# endif
42#endif 166#endif
43 167
44/* used for struct dirent, AIX doesn't provide it */ 168#ifndef makedev
45#ifndef NAME_MAX 169# define makedev(maj,min) (((maj) << 8) | (min))
46# define NAME_MAX 4096
47#endif 170#endif
48 171#ifndef major
49#if __ia64 172# define major(dev) ((dev) >> 8)
50# define STACKSIZE 65536
51#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52# define STACKSIZE PTHREAD_STACK_MIN
53#else
54# define STACKSIZE 16384
55#endif 173#endif
174#ifndef minor
175# define minor(dev) ((dev) & 0xff)
176#endif
56 177
57/* buffer size for various temporary buffers */ 178#if PAGESIZE <= 0
58#define AIO_BUFSIZE 65536 179# define PAGESIZE sysconf (_SC_PAGESIZE)
180#endif
59 181
60#define dBUF \ 182/*****************************************************************************/
61 char *aio_buf = malloc (AIO_BUFSIZE); \ 183
62 if (!aio_buf) \ 184#if !_POSIX_MAPPED_FILES
185# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
186# define munmap(addr,length) EIO_ENOSYS ()
187#endif
188
189#if !_POSIX_MEMORY_PROTECTION
190# define mprotect(addr,len,prot) EIO_ENOSYS ()
191#endif
192
193#if !MREMAP_MAYMOVE
194# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
195#endif
196
197#define FOREIGN_MAGIC PERL_MAGIC_ext
198
199static int ecb_cold
200mmap_free (pTHX_ SV *sv, MAGIC *mg)
201{
202 int old_errno = errno;
203 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
204 errno = old_errno;
205
206 mg->mg_obj = 0; /* just in case */
207
208 SvREADONLY_off (sv);
209
210 if (SvPVX (sv) != mg->mg_ptr)
211 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
212
213 SvCUR_set (sv, 0);
214 SvPVX (sv) = 0;
215 SvOK_off (sv);
216
63 return -1; 217 return 0;
218}
64 219
65#define fBUF free (aio_buf) 220static MGVTBL mmap_vtbl = {
66 221 0, 0, 0, 0, mmap_free
67enum {
68 REQ_QUIT,
69 REQ_OPEN, REQ_CLOSE,
70 REQ_READ, REQ_WRITE, REQ_READAHEAD,
71 REQ_SENDFILE,
72 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73 REQ_FSYNC, REQ_FDATASYNC,
74 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75 REQ_READDIR,
76 REQ_LINK, REQ_SYMLINK,
77 REQ_GROUP, REQ_NOP,
78 REQ_SLEEP,
79}; 222};
80 223
81#define AIO_REQ_KLASS "IO::AIO::REQ" 224static int ecb_cold
82#define AIO_GRP_KLASS "IO::AIO::GRP" 225sysfree_free (pTHX_ SV *sv, MAGIC *mg)
83
84typedef struct aio_cb
85{ 226{
86 struct aio_cb *volatile next; 227 free (mg->mg_ptr);
228 mg->mg_obj = 0; /* just in case */
87 229
88 SV *data, *callback; 230 SvREADONLY_off (sv);
89 SV *fh, *fh2;
90 void *dataptr, *data2ptr;
91 Stat_t *statdata;
92 off_t offset;
93 size_t length;
94 ssize_t result;
95 231
96 STRLEN dataoffset; 232 if (SvPVX (sv) != mg->mg_ptr)
97 int type; 233 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
98 int fd, fd2;
99 int errorno;
100 mode_t mode; /* open */
101 234
102 unsigned char flags; 235 SvCUR_set (sv, 0);
103 unsigned char pri; 236 SvPVX (sv) = 0;
237 SvOK_off (sv);
104 238
105 SV *self; /* the perl counterpart of this request, if any */ 239 return 0;
106 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 240}
107} aio_cb;
108 241
109enum { 242static MGVTBL sysfree_vtbl = {
110 FLAG_CANCELLED = 0x01, 243 0, 0, 0, 0, sysfree_free
111}; 244};
112 245
113typedef aio_cb *aio_req; 246/*****************************************************************************/
114typedef aio_cb *aio_req_ornot;
115 247
116enum { 248/* helper: set scalar to foreign ptr with custom free */
117 PRI_MIN = -4, 249static void
118 PRI_MAX = 4, 250sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
251{
252 sv_force_normal (sv);
119 253
120 DEFAULT_PRI = 0, 254 /* we store the length in mg_obj, as namlen is I32 :/ */
121 PRI_BIAS = -PRI_MIN, 255 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
122 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 256 ->mg_obj = (SV *)length;
123};
124 257
125static int next_pri = DEFAULT_PRI + PRI_BIAS; 258 SvUPGRADE (sv, SVt_PV); /* nop... */
126 259
127static int started, wanted; 260 if (SvLEN (sv))
128static volatile int nreqs; 261 Safefree (SvPVX (sv));
129static int max_outstanding = 1<<30;
130static int respipe [2];
131 262
132#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 263 SvPVX (sv) = (char *)addr;
133# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 264 SvCUR_set (sv, length);
134#else 265 SvLEN_set (sv, 0);
135# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 266 SvPOK_only (sv);
136#endif 267}
137 268
138static pthread_mutex_t reslock = AIO_MUTEX_INIT; 269static void
139static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 270sv_clear_foreign (SV *sv)
140static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 271{
272 /* todo: iterate over magic and only free ours, but of course */
273 /* the perl5porters will call that (correct) behaviour buggy */
274 sv_unmagic (sv, FOREIGN_MAGIC);
275}
141 276
142/* 277/*****************************************************************************/
143 * a somewhat faster data structure might be nice, but 278
144 * with 8 priorities this actually needs <20 insns 279/* defines all sorts of constants to 0 unless they are already defined */
145 * per shift, the most expensive operation. 280/* also provides const_iv_ and const_niv_ macros for them */
281#include "def0.h"
282
283/*****************************************************************************/
284
285static void
286fiemap (eio_req *req)
287{
288 req->result = -1;
289
290#if HAVE_FIEMAP
291 /* assume some c99 */
292 struct fiemap *fiemap = 0;
293 size_t end_offset;
294 int count = req->int3;
295
296 req->flags |= EIO_FLAG_PTR1_FREE;
297
298 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
299 /* increase in 3.5kb steps */
300 if (count < 0)
301 count = 8;
302
303 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
304 errno = ENOMEM;
305 if (!fiemap)
306 return;
307
308 req->ptr1 = fiemap;
309
310 fiemap->fm_start = req->offs;
311 fiemap->fm_length = req->size;
312 fiemap->fm_flags = req->int2;
313 fiemap->fm_extent_count = count;
314
315 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
316 return;
317
318 if (req->int3 >= 0 /* not autosizing */
319 || !fiemap->fm_mapped_extents /* no more extents */
320 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
321 goto done;
322
323 /* else we have to loop -
324 * it would be tempting (actually I tried that first) to just query the
325 * number of extents needed, but linux often feels like not returning all
326 * extents, without telling us it left any out. this complicates
327 * this quite a bit.
146 */ 328 */
147typedef struct {
148 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149 int size;
150} reqq;
151 329
152static reqq req_queue; 330 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
153static reqq res_queue;
154 331
155int reqq_push (reqq *q, aio_req req) 332 for (;;)
156{
157 int pri = req->pri;
158 req->next = 0;
159
160 if (q->qe[pri])
161 { 333 {
162 q->qe[pri]->next = req; 334 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
163 q->qe[pri] = req; 335 char scratch[3072];
164 } 336 struct fiemap *incmap = (struct fiemap *)scratch;
165 else
166 q->qe[pri] = q->qs[pri] = req;
167 337
168 return q->size++; 338 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
169} 339 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
340 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
341 incmap->fm_flags = fiemap->fm_flags;
342 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
170 343
171aio_req reqq_shift (reqq *q) 344 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
172{
173 int pri;
174
175 if (!q->size)
176 return 0; 345 return;
177 346
178 --q->size; 347 if (!incmap->fm_mapped_extents)
348 goto done;
179 349
180 for (pri = NUM_PRI; pri--; ) 350 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
181 { 351 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
182 aio_req req = q->qs[pri]; 352 errno = ENOMEM;
183
184 if (req) 353 if (!fiemap)
354 return;
355
356 req->ptr1 = fiemap;
357
358 for (count = 0; count < incmap->fm_mapped_extents; ++count)
185 { 359 {
186 if (!(q->qs[pri] = req->next)) 360 struct fiemap_extent *e = incmap->fm_extents + count;
187 q->qe[pri] = 0;
188 361
189 return req; 362 if (e->fe_logical + e->fe_length >= end_offset)
363 goto done;
364
365 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
366
367 if (e->fe_flags & FIEMAP_EXTENT_LAST)
368 goto done;
369
190 } 370 }
191 } 371 }
192 372
193 abort (); 373done:
194} 374 req->result = 0;
195 375
376#else
377 errno = ENOSYS;
378#endif
379}
380
381/*****************************************************************************/
382
383enum {
384 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
385};
386
387typedef eio_req *aio_req;
388typedef eio_req *aio_req_ornot;
389typedef eio_wd aio_wd;
390
391static SV *on_next_submit;
392static int next_pri = EIO_PRI_DEFAULT;
393static int max_outstanding;
394
395static s_epipe respipe;
396
397static void req_destroy (aio_req req);
196static void req_invoke (aio_req req); 398static void req_cancel (aio_req req);
197static void req_free (aio_req req); 399
400static void
401want_poll (void)
402{
403 /* write a dummy byte to the pipe so fh becomes ready */
404 s_epipe_signal (&respipe);
405}
406
407static void
408done_poll (void)
409{
410 /* read any signals sent by the worker threads */
411 s_epipe_drain (&respipe);
412}
198 413
199/* must be called at most once */ 414/* must be called at most once */
200static SV *req_sv (aio_req req, const char *klass) 415static SV *
416req_sv (aio_req req, HV *stash)
201{ 417{
202 if (!req->self) 418 if (!req->self)
203 { 419 {
204 req->self = (SV *)newHV (); 420 req->self = (SV *)newHV ();
205 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 421 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206 } 422 }
207 423
208 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 424 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209} 425}
210 426
211static aio_req SvAIO_REQ (SV *sv) 427static SV *
428newSVaio_wd (aio_wd wd)
429{
430 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
431}
432
433static aio_req
434SvAIO_REQ (SV *sv)
212{ 435{
213 MAGIC *mg; 436 MAGIC *mg;
214 437
215 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 438 if (!SvROK (sv)
439 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
440 || (SvSTASH (SvRV (sv)) != aio_grp_stash
441 && SvSTASH (SvRV (sv)) != aio_req_stash
442 && !sv_derived_from (sv, "IO::AIO::REQ")))
216 croak ("object of class " AIO_REQ_KLASS " expected"); 443 croak ("object of class IO::AIO::REQ expected");
217 444
218 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 445 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219 446
220 return mg ? (aio_req)mg->mg_ptr : 0; 447 return mg ? (aio_req)mg->mg_ptr : 0;
221} 448}
222 449
450static aio_wd
451SvAIO_WD (SV *sv)
452{
453 if (!SvROK (sv)
454 || SvTYPE (SvRV (sv)) != SVt_PVMG
455 || SvSTASH (SvRV (sv)) != aio_wd_stash)
456 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
457
458 return (aio_wd)(long)SvIVX (SvRV (sv));
459}
460
461static SV *
462newmortalFH (int fd, int flags)
463{
464 if (fd < 0)
465 return &PL_sv_undef;
466
467 GV *gv = (GV *)sv_newmortal ();
468 char sym[64];
469 int symlen;
470
471 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
472 gv_init (gv, aio_stash, sym, symlen, 0);
473
474 symlen = snprintf (
475 sym,
476 sizeof (sym),
477 "%s&=%d",
478 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
479 fd
480 );
481
482 return do_open (gv, sym, symlen, 0, 0, 0, 0)
483 ? (SV *)gv : &PL_sv_undef;
484}
485
486static void
223static void aio_grp_feed (aio_req grp) 487aio_grp_feed (aio_req grp)
224{ 488{
225 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 489 if (grp->sv2 && SvOK (grp->sv2))
226 { 490 {
227 int old_len = grp->length;
228
229 if (grp->fh2 && SvOK (grp->fh2))
230 {
231 dSP; 491 dSP;
232 492
233 ENTER; 493 ENTER;
234 SAVETMPS; 494 SAVETMPS;
235 PUSHMARK (SP); 495 PUSHMARK (SP);
236 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 496 XPUSHs (req_sv (grp, aio_grp_stash));
237 PUTBACK; 497 PUTBACK;
238 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 498 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239 SPAGAIN; 499 SPAGAIN;
240 FREETMPS; 500 FREETMPS;
241 LEAVE; 501 LEAVE;
242 }
243
244 /* stop if no progress has been made */
245 if (old_len == grp->length)
246 {
247 SvREFCNT_dec (grp->fh2);
248 grp->fh2 = 0;
249 break;
250 }
251 } 502 }
252} 503}
253 504
254static void aio_grp_dec (aio_req grp) 505static void
506req_submit (eio_req *req)
255{ 507{
256 --grp->length; 508 eio_submit (req);
257 509
258 /* call feeder, if applicable */ 510 if (expect_false (on_next_submit))
259 aio_grp_feed (grp);
260
261 /* finish, if done */
262 if (!grp->length && grp->fd)
263 { 511 {
264 req_invoke (grp); 512 dSP;
265 req_free (grp); 513 SV *cb = sv_2mortal (on_next_submit);
514
515 on_next_submit = 0;
516
517 PUSHMARK (SP);
518 PUTBACK;
519 call_sv (cb, G_DISCARD | G_EVAL);
266 } 520 }
267} 521}
268 522
269static void poll_wait () 523static int
524req_invoke (eio_req *req)
270{ 525{
271 fd_set rfd; 526 if (req->flags & FLAG_SV2_RO_OFF)
527 SvREADONLY_off (req->sv2);
272 528
273 while (nreqs) 529 if (!EIO_CANCELLED (req) && req->callback)
274 { 530 {
275 int size;
276#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277 pthread_mutex_lock (&reslock);
278#endif
279 size = res_queue.size;
280#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281 pthread_mutex_unlock (&reslock);
282#endif
283
284 if (size)
285 return;
286
287 FD_ZERO(&rfd);
288 FD_SET(respipe [0], &rfd);
289
290 select (respipe [0] + 1, &rfd, 0, 0, 0);
291 }
292}
293
294static void req_invoke (aio_req req)
295{
296 dSP; 531 dSP;
297 532 static SV *sv_result_cache; /* caches the result integer SV */
298 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 533 SV *sv_result;
299 {
300 errno = req->errorno;
301 534
302 ENTER; 535 ENTER;
303 SAVETMPS; 536 SAVETMPS;
304 PUSHMARK (SP); 537 PUSHMARK (SP);
305 EXTEND (SP, 1); 538 EXTEND (SP, 1);
306 539
540 /* do not recreate the result IV from scratch each time */
541 if (expect_true (sv_result_cache))
542 {
543 sv_result = sv_result_cache; sv_result_cache = 0;
544 SvIV_set (sv_result, req->result);
545 SvIOK_only (sv_result);
546 }
547 else
548 {
549 sv_result = newSViv (req->result);
550 SvREADONLY_on (sv_result);
551 }
552
307 switch (req->type) 553 switch (req->type)
308 { 554 {
555 case EIO_WD_OPEN:
556 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
557 break;
558
309 case REQ_READDIR: 559 case EIO_READDIR:
310 { 560 {
311 SV *rv = &PL_sv_undef; 561 SV *rv = &PL_sv_undef;
312 562
313 if (req->result >= 0) 563 if (req->result >= 0)
314 { 564 {
565 int i;
315 char *buf = req->data2ptr; 566 char *names = (char *)req->ptr2;
567 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316 AV *av = newAV (); 568 AV *av = newAV ();
317 569
318 while (req->result) 570 av_extend (av, req->result - 1);
571
572 for (i = 0; i < req->result; ++i)
319 { 573 {
574 if (req->int1 & EIO_READDIR_DENTS)
575 {
576 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
577
578 if (req->int1 & EIO_READDIR_CUSTOM2)
579 {
580 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
581 AV *avent = newAV ();
582
583 av_extend (avent, 2);
584
585 if (!sv_type [ent->type])
586 {
587 sv_type [ent->type] = newSViv (ent->type);
588 SvREADONLY_on (sv_type [ent->type]);
589 }
590
591 av_store (avent, 0, namesv);
592 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
593 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
594
595 av_store (av, i, newRV_noinc ((SV *)avent));
596 }
597 else
598 av_store (av, i, namesv);
599
600 ++ent;
601 }
602 else
603 {
320 SV *sv = newSVpv (buf, 0); 604 SV *name = newSVpv (names, 0);
321
322 av_push (av, sv); 605 av_store (av, i, name);
323 buf += SvCUR (sv) + 1; 606 names += SvCUR (name) + 1;
324 req->result--; 607 }
325 } 608 }
326 609
327 rv = sv_2mortal (newRV_noinc ((SV *)av)); 610 rv = sv_2mortal (newRV_noinc ((SV *)av));
328 } 611 }
329 612
330 PUSHs (rv); 613 PUSHs (rv);
614
615 if (req->int1 & EIO_READDIR_CUSTOM1)
616 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331 } 617 }
332 break; 618 break;
333 619
334 case REQ_OPEN: 620 case EIO_OPEN:
621 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
622 break;
623
624 case EIO_STATVFS:
625 case EIO_FSTATVFS:
335 { 626 {
336 /* convert fd to fh */ 627 SV *rv = &PL_sv_undef;
337 SV *fh; 628
629#ifndef _WIN32
630 if (req->result >= 0)
631 {
632 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
633 HV *hv = newHV ();
634 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
635 * chooses to make it a struct.
636 */
637 unsigned long fsid = 0;
638 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
338 639
339 PUSHs (sv_2mortal (newSViv (req->result))); 640 rv = sv_2mortal (newRV_noinc ((SV *)hv));
340 PUTBACK;
341 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342 SPAGAIN;
343 641
344 fh = SvREFCNT_inc (POPs); 642 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
643 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
644 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
645 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
646 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
647 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
648 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
649 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
650 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
651 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
652 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
653 }
654#endif
345 655
346 PUSHMARK (SP); 656 PUSHs (rv);
347 XPUSHs (sv_2mortal (fh));
348 } 657 }
658
349 break; 659 break;
350 660
351 case REQ_GROUP: 661 case EIO_GROUP:
352 req->fd = 2; /* mark group as finished */ 662 req->int1 = 2; /* mark group as finished */
353 663
354 if (req->data) 664 if (req->sv1)
355 { 665 {
356 int i; 666 int i;
357 AV *av = (AV *)req->data; 667 AV *av = (AV *)req->sv1;
358 668
359 EXTEND (SP, AvFILL (av) + 1); 669 EXTEND (SP, AvFILL (av) + 1);
360 for (i = 0; i <= AvFILL (av); ++i) 670 for (i = 0; i <= AvFILL (av); ++i)
361 PUSHs (*av_fetch (av, i, 0)); 671 PUSHs (*av_fetch (av, i, 0));
362 } 672 }
363 break; 673 break;
364 674
365 case REQ_NOP: 675 case EIO_NOP:
366 case REQ_SLEEP: 676 case EIO_BUSY:
367 break; 677 break;
368 678
679 case EIO_READLINK:
680 case EIO_REALPATH:
681 if (req->result > 0)
682 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
683 break;
684
685 case EIO_STAT:
686 case EIO_LSTAT:
687 case EIO_FSTAT:
688 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
689
690 if (!(PL_laststatval = req->result))
691 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
692 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
693
694 PUSHs (sv_result);
695 break;
696
697 case EIO_SEEK:
698 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
699 break;
700
701 case EIO_READ:
702 {
703 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
704 *SvEND (req->sv2) = 0;
705 SvPOK_only (req->sv2);
706 SvSETMAGIC (req->sv2);
707 PUSHs (sv_result);
708 }
709 break;
710
711 case EIO_SLURP:
712 {
713 if (req->result >= 0)
714 {
715 /* if length was originally not known, we steal the malloc'ed memory */
716 if (req->flags & EIO_FLAG_PTR2_FREE)
717 {
718 req->flags &= ~EIO_FLAG_PTR2_FREE;
719 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
720 }
721 else
722 {
723 SvCUR_set (req->sv2, req->result);
724 *SvEND (req->sv2) = 0;
725 SvPOK_only (req->sv2);
726 }
727
728 SvSETMAGIC (req->sv2);
729 }
730
731 PUSHs (sv_result);
732 }
733 break;
734
735 case EIO_CUSTOM:
736 if (req->feed == fiemap)
737 {
738#if HAVE_FIEMAP
739 if (!req->result)
740 {
741 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
742
743 if (fiemap->fm_extent_count)
744 {
745 AV *av = newAV ();
746 int i;
747
748 while (fiemap->fm_mapped_extents)
749 {
750 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
751 AV *ext_av = newAV ();
752
753 av_store (ext_av, 3, newSVuv (extent->fe_flags));
754 av_store (ext_av, 2, newSVval64 (extent->fe_length));
755 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
756 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
757
758 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
759 }
760
761 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
762 }
763 else
764 {
765 SvIV_set (sv_result, fiemap->fm_mapped_extents);
766 PUSHs (sv_result);
767 }
768 }
769#endif
770 }
771 else
772 PUSHs (sv_result);
773 break;
774
775 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
776 if (req->result > 0)
777 SvIV_set (sv_result, 0);
778 /* FALLTHROUGH */
779
369 default: 780 default:
370 PUSHs (sv_2mortal (newSViv (req->result))); 781 PUSHs (sv_result);
371 break; 782 break;
372 } 783 }
373 784
785 errno = req->errorno;
374 786
375 PUTBACK; 787 PUTBACK;
376 call_sv (req->callback, G_VOID | G_EVAL); 788 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377 SPAGAIN; 789 SPAGAIN;
790
791 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
792 SvREFCNT_dec (sv_result);
793 else
794 sv_result_cache = sv_result;
378 795
379 FREETMPS; 796 FREETMPS;
380 LEAVE; 797 LEAVE;
798
799 PUTBACK;
381 } 800 }
382 801
383 if (req->grp) 802 return !!SvTRUE (ERRSV);
384 {
385 aio_req grp = req->grp;
386
387 /* unlink request */
388 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
389 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
390
391 if (grp->grp_first == req)
392 grp->grp_first = req->grp_next;
393
394 aio_grp_dec (grp);
395 }
396
397 if (SvTRUE (ERRSV))
398 {
399 req_free (req);
400 croak (0);
401 }
402} 803}
403 804
404static void req_free (aio_req req) 805static void
806req_destroy (aio_req req)
405{ 807{
406 if (req->self) 808 if (req->self)
407 { 809 {
408 sv_unmagic (req->self, PERL_MAGIC_ext); 810 sv_unmagic (req->self, PERL_MAGIC_ext);
409 SvREFCNT_dec (req->self); 811 SvREFCNT_dec (req->self);
410 } 812 }
411 813
412 SvREFCNT_dec (req->data);
413 SvREFCNT_dec (req->fh); 814 SvREFCNT_dec (req->sv1);
414 SvREFCNT_dec (req->fh2); 815 SvREFCNT_dec (req->sv2);
816 SvREFCNT_dec (req->sv3);
817 SvREFCNT_dec (req->sv4);
415 SvREFCNT_dec (req->callback); 818 SvREFCNT_dec (req->callback);
416 Safefree (req->statdata);
417 819
418 if (req->type == REQ_READDIR && req->result >= 0)
419 free (req->data2ptr);
420
421 Safefree (req); 820 free (req);
422} 821}
423 822
424static void req_cancel (aio_req req) 823static void
824req_cancel_subs (aio_req grp)
425{ 825{
426 req->flags |= FLAG_CANCELLED;
427
428 if (req->type == REQ_GROUP) 826 if (grp->type != EIO_GROUP)
827 return;
828
829 SvREFCNT_dec (grp->sv2);
830 grp->sv2 = 0;
831
832 eio_grp_cancel (grp);
833}
834
835static void ecb_cold
836create_respipe (void)
837{
838 if (s_epipe_renew (&respipe))
839 croak ("IO::AIO: unable to initialize result pipe");
840}
841
842static void
843poll_wait (void)
844{
845 while (eio_nreqs ())
429 { 846 {
430 aio_req sub; 847 int size;
431 848
432 for (sub = req->grp_first; sub; sub = sub->grp_next) 849 X_LOCK (EIO_POOL->reslock);
433 req_cancel (sub); 850 size = EIO_POOL->res_queue.size;
851 X_UNLOCK (EIO_POOL->reslock);
852
853 if (size)
854 return;
855
856 etp_maybe_start_thread (EIO_POOL);
857
858 s_epipe_wait (&respipe);
434 } 859 }
435} 860}
436 861
437static int poll_cb () 862static int
863poll_cb (void)
438{ 864{
439 dSP;
440 int count = 0;
441 int do_croak = 0;
442 aio_req req;
443
444 for (;;) 865 for (;;)
445 { 866 {
446 pthread_mutex_lock (&reslock); 867 int res = eio_poll ();
447 req = reqq_shift (&res_queue);
448 868
449 if (req) 869 if (res > 0)
870 croak (0);
871
872 if (!max_outstanding || max_outstanding > eio_nreqs ())
873 return res;
874
875 poll_wait ();
876 }
877}
878
879static void ecb_cold
880reinit (void)
881{
882 create_respipe ();
883
884 if (eio_init (want_poll, done_poll) < 0)
885 croak ("IO::AIO: unable to initialise eio library");
886}
887
888/*****************************************************************************/
889
890static SV *
891get_cb (SV *cb_sv)
892{
893 SvGETMAGIC (cb_sv);
894 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
895}
896
897static aio_req ecb_noinline
898dreq (SV *callback)
899{
900 SV *cb_cv;
901 aio_req req;
902 int req_pri = next_pri;
903 next_pri = EIO_PRI_DEFAULT;
904
905 cb_cv = get_cb (callback);
906
907 req = calloc (sizeof (*req), 1);
908 if (!req)
909 croak ("out of memory during eio_req allocation");
910
911 req->callback = SvREFCNT_inc (cb_cv);
912 req->pri = req_pri;
913
914 return req;
915}
916
917#define dREQ \
918 aio_req req = dreq (callback); \
919
920#define REQ_SEND \
921 PUTBACK; \
922 req_submit (req); \
923 SPAGAIN; \
924 \
925 if (GIMME_V != G_VOID) \
926 XPUSHs (req_sv (req, aio_req_stash));
927
928ecb_inline void
929req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
930{
931 if (expect_false (SvROK (path)))
932 {
933 SV *rv = SvRV (path);
934 SV *wdob;
935
936 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
450 { 937 {
451 if (!res_queue.size) 938 path = AvARRAY (rv)[1];
939 wdob = AvARRAY (rv)[0];
940
941 if (SvOK (wdob))
452 { 942 {
453 /* read any signals sent by the worker threads */ 943 *wd = SvAIO_WD (wdob);
454 char buf [32]; 944 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
455 while (read (respipe [0], buf, 32) == 32)
456 ;
457 } 945 }
946 else
947 *wd = EIO_INVALID_WD;
458 } 948 }
459 949 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
460 pthread_mutex_unlock (&reslock);
461
462 if (!req)
463 break;
464
465 --nreqs;
466
467 if (req->type == REQ_QUIT)
468 started--;
469 else if (req->type == REQ_GROUP && req->length)
470 { 950 {
471 req->fd = 1; /* mark request as delayed */ 951 *wd = (aio_wd)(long)SvIVX (rv);
472 continue; 952 *wdsv = SvREFCNT_inc_NN (rv);
953 *ptr = ".";
954 return; /* path set to "." */
473 } 955 }
474 else 956 else
475 { 957 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
476 if (req->type == REQ_READ)
477 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480 SvREADONLY_off (req->data);
481
482 if (req->statdata)
483 {
484 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485 PL_laststatval = req->result;
486 PL_statcache = *(req->statdata);
487 }
488
489 req_invoke (req);
490
491 count++;
492 }
493
494 req_free (req);
495 } 958 }
496 959
497 return count; 960 *pathsv = newSVsv (path);
961 *ptr = SvPVbyte_nolen (*pathsv);
498} 962}
499 963
500static void *aio_proc(void *arg); 964static void ecb_noinline
501 965req_set_path1 (aio_req req, SV *path)
502static void start_thread (void)
503{ 966{
504 sigset_t fullsigset, oldsigset; 967 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
505 pthread_t tid;
506 pthread_attr_t attr;
507
508 pthread_attr_init (&attr);
509 pthread_attr_setstacksize (&attr, STACKSIZE);
510 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512 sigfillset (&fullsigset);
513 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516 started++;
517
518 sigprocmask (SIG_SETMASK, &oldsigset, 0);
519} 968}
520 969
521static void req_send (aio_req req) 970static void ecb_noinline
971req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
522{ 972{
523 while (started < wanted && nreqs >= started) 973 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
524 start_thread ();
525 974
526 ++nreqs; 975 switch (SvTYPE (rv))
527
528 pthread_mutex_lock (&reqlock);
529 reqq_push (&req_queue, req);
530 pthread_cond_signal (&reqwait);
531 pthread_mutex_unlock (&reqlock);
532
533 if (nreqs > max_outstanding)
534 for (;;)
535 {
536 poll_cb ();
537
538 if (nreqs <= max_outstanding)
539 break;
540
541 poll_wait ();
542 }
543}
544
545static void end_thread (void)
546{
547 aio_req req;
548
549 Newz (0, req, 1, aio_cb);
550
551 req->type = REQ_QUIT;
552 req->pri = PRI_MAX + PRI_BIAS;
553
554 req_send (req);
555}
556
557static void min_parallel (int nthreads)
558{
559 if (wanted < nthreads)
560 wanted = nthreads;
561}
562
563static void max_parallel (int nthreads)
564{
565 int cur = started;
566
567 if (wanted > nthreads)
568 wanted = nthreads;
569
570 while (cur > wanted)
571 { 976 {
572 end_thread (); 977 case SVt_PVIO:
573 cur--; 978 case SVt_PVLV:
979 case SVt_PVGV:
980 req->type = type_fh;
981 req->sv1 = newSVsv (fh_or_path);
982 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
983 break;
984
985 default:
986 req->type = type_path;
987 req_set_path1 (req, fh_or_path);
988 break;
574 } 989 }
575
576 while (started > wanted)
577 {
578 poll_wait ();
579 poll_cb ();
580 }
581}
582
583static void create_pipe ()
584{
585 if (pipe (respipe))
586 croak ("unable to initialize result pipe");
587
588 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
589 croak ("cannot set result pipe to nonblocking mode");
590
591 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
592 croak ("cannot set result pipe to nonblocking mode");
593} 990}
594 991
595/*****************************************************************************/ 992/*****************************************************************************/
596/* work around various missing functions */
597 993
598#if !HAVE_PREADWRITE 994static void
599# define pread aio_pread 995ts_set (struct timespec *ts, NV value)
600# define pwrite aio_pwrite
601
602/*
603 * make our pread/pwrite safe against themselves, but not against
604 * normal read/write by using a mutex. slows down execution a lot,
605 * but that's your problem, not mine.
606 */
607static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
608
609static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610{ 996{
611 ssize_t res; 997 ts->tv_sec = value;
612 off_t ooffset; 998 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
613
614 pthread_mutex_lock (&preadwritelock);
615 ooffset = lseek (fd, 0, SEEK_CUR);
616 lseek (fd, offset, SEEK_SET);
617 res = read (fd, buf, count);
618 lseek (fd, ooffset, SEEK_SET);
619 pthread_mutex_unlock (&preadwritelock);
620
621 return res;
622} 999}
623 1000
624static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1001static NV
1002ts_get (const struct timespec *ts)
625{ 1003{
626 ssize_t res; 1004 return ts->tv_sec + ts->tv_nsec * 1e-9;
627 off_t ooffset;
628
629 pthread_mutex_lock (&preadwritelock);
630 ooffset = lseek (fd, 0, SEEK_CUR);
631 lseek (fd, offset, SEEK_SET);
632 res = write (fd, buf, count);
633 lseek (fd, offset, SEEK_SET);
634 pthread_mutex_unlock (&preadwritelock);
635
636 return res;
637} 1005}
638#endif
639 1006
640#if !HAVE_FDATASYNC 1007/*****************************************************************************/
641# define fdatasync fsync
642#endif
643 1008
644#if !HAVE_READAHEAD 1009XS(boot_IO__AIO) ecb_cold;
645# define readahead aio_readahead
646 1010
647static ssize_t readahead (int fd, off_t offset, size_t count) 1011MODULE = IO::AIO PACKAGE = IO::AIO
648{
649 dBUF;
650 1012
651 while (count > 0) 1013PROTOTYPES: ENABLE
652 {
653 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
654 1014
655 pread (fd, aio_buf, len, offset); 1015BOOT:
656 offset += len;
657 count -= len;
658 }
659
660 fBUF;
661
662 errno = 0;
663}
664#endif
665
666#if !HAVE_READDIR_R
667# define readdir_r aio_readdir_r
668
669static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
670
671static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672{ 1016{
673 struct dirent *e; 1017 static const struct {
674 int errorno; 1018 const char *name;
1019 IV iv;
1020 } *civ, const_iv[] = {
1021# define const_niv(name, value) { # name, (IV) value },
1022# define const_iv(name) { # name, (IV) name },
1023# define const_eio(name) { # name, (IV) EIO_ ## name },
675 1024
676 pthread_mutex_lock (&readdirlock); 1025 /* you have to re-run ./gendef0 after adding/removing any constants here */
1026 /* the first block can be undef if missing */
1027 const_iv (ENOSYS)
1028 const_iv (EXDEV)
1029 const_iv (EBADR)
677 1030
678 e = readdir (dirp); 1031 /* for lseek */
679 errorno = errno; 1032 const_iv (SEEK_DATA)
1033 const_iv (SEEK_HOLE)
680 1034
681 if (e) 1035 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
682 { 1036 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
683 *res = ent; 1037 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
684 strcpy (ent->d_name, e->d_name); 1038 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
685 } 1039 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
686 else 1040 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
687 *res = 0;
688 1041
689 pthread_mutex_unlock (&readdirlock); 1042 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1043 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1044 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1045 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1046 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
690 1047
691 errno = errorno; 1048 /* the second block will be 0 when missing */
692 return e ? 0 : -1; 1049 const_iv (O_ACCMODE)
693}
694#endif
695 1050
696/* sendfile always needs emulation */ 1051 const_iv (O_RDONLY)
697static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1052 const_iv (O_WRONLY)
698{ 1053 const_iv (O_RDWR)
699 ssize_t res; 1054 const_iv (O_CREAT)
1055 const_iv (O_TRUNC)
1056 const_iv (O_EXCL)
1057 const_iv (O_APPEND)
700 1058
701 if (!count) 1059 const_iv (O_ASYNC)
702 return 0; 1060 const_iv (O_DIRECT)
1061 const_iv (O_NOATIME)
703 1062
704#if HAVE_SENDFILE 1063 const_iv (O_CLOEXEC)
705# if __linux 1064 const_iv (O_NOCTTY)
706 res = sendfile (ofd, ifd, &offset, count); 1065 const_iv (O_NOFOLLOW)
1066 const_iv (O_NONBLOCK)
1067 const_iv (O_EXEC)
1068 const_iv (O_SEARCH)
1069 const_iv (O_DIRECTORY)
1070 const_iv (O_DSYNC)
1071 const_iv (O_RSYNC)
1072 const_iv (O_SYNC)
1073 const_iv (O_PATH)
1074 const_iv (O_TMPFILE)
1075 const_iv (O_TTY_INIT)
707 1076
708# elif __freebsd 1077 const_iv (S_IFIFO)
709 /* 1078 const_iv (S_IFCHR)
710 * Of course, the freebsd sendfile is a dire hack with no thoughts 1079 const_iv (S_IFBLK)
711 * wasted on making it similar to other I/O functions. 1080 const_iv (S_IFLNK)
712 */ 1081 const_iv (S_IFREG)
713 { 1082 const_iv (S_IFDIR)
714 off_t sbytes; 1083 const_iv (S_IFWHT)
715 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1084 const_iv (S_IFSOCK)
1085 const_iv (S_IFMT)
716 1086
717 if (res < 0 && sbytes) 1087 const_iv (ST_RDONLY)
718 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1088 const_iv (ST_NOSUID)
719 res = sbytes; 1089 const_iv (ST_NODEV)
1090 const_iv (ST_NOEXEC)
1091 const_iv (ST_SYNCHRONOUS)
1092 const_iv (ST_MANDLOCK)
1093 const_iv (ST_WRITE)
1094 const_iv (ST_APPEND)
1095 const_iv (ST_IMMUTABLE)
1096 const_iv (ST_NOATIME)
1097 const_iv (ST_NODIRATIME)
1098 const_iv (ST_RELATIME)
1099
1100 const_iv (PROT_NONE)
1101 const_iv (PROT_EXEC)
1102 const_iv (PROT_READ)
1103 const_iv (PROT_WRITE)
1104
1105 const_iv (MAP_PRIVATE)
1106 const_iv (MAP_SHARED)
1107 const_iv (MAP_FIXED)
1108 const_iv (MAP_ANONYMOUS)
1109
1110 /* linuxish */
1111 const_iv (MAP_LOCKED)
1112 const_iv (MAP_NORESERVE)
1113 const_iv (MAP_POPULATE)
1114 const_iv (MAP_NONBLOCK)
1115 const_iv (MAP_GROWSDOWN)
1116 const_iv (MAP_32BIT)
1117 const_iv (MAP_HUGETLB)
1118 const_iv (MAP_STACK)
1119
1120 const_iv (MREMAP_MAYMOVE)
1121 const_iv (MREMAP_FIXED)
1122
1123 const_iv (F_DUPFD_CLOEXEC)
1124
1125 const_iv (F_OFD_GETLK)
1126 const_iv (F_OFD_SETLK)
1127 const_iv (F_OFD_GETLKW)
1128
1129 const_iv (FIFREEZE)
1130 const_iv (FITHAW)
1131 const_iv (FITRIM)
1132 const_iv (FICLONE)
1133 const_iv (FICLONERANGE)
1134 const_iv (FIDEDUPERANGE)
1135
1136 const_iv (FS_IOC_GETFLAGS)
1137 const_iv (FS_IOC_SETFLAGS)
1138 const_iv (FS_IOC_GETVERSION)
1139 const_iv (FS_IOC_SETVERSION)
1140 const_iv (FS_IOC_FIEMAP)
1141 const_iv (FS_IOC_FSGETXATTR)
1142 const_iv (FS_IOC_FSSETXATTR)
1143 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1144 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1145 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1146
1147 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1148
1149 const_iv (FS_SECRM_FL)
1150 const_iv (FS_UNRM_FL)
1151 const_iv (FS_COMPR_FL)
1152 const_iv (FS_SYNC_FL)
1153 const_iv (FS_IMMUTABLE_FL)
1154 const_iv (FS_APPEND_FL)
1155 const_iv (FS_NODUMP_FL)
1156 const_iv (FS_NOATIME_FL)
1157 const_iv (FS_DIRTY_FL)
1158 const_iv (FS_COMPRBLK_FL)
1159 const_iv (FS_NOCOMP_FL)
1160 const_iv (FS_ENCRYPT_FL)
1161 const_iv (FS_BTREE_FL)
1162 const_iv (FS_INDEX_FL)
1163 const_iv (FS_JOURNAL_DATA_FL)
1164 const_iv (FS_NOTAIL_FL)
1165 const_iv (FS_DIRSYNC_FL)
1166 const_iv (FS_TOPDIR_FL)
1167 const_iv (FS_FL_USER_MODIFIABLE)
1168
1169 const_iv (FS_XFLAG_REALTIME)
1170 const_iv (FS_XFLAG_PREALLOC)
1171 const_iv (FS_XFLAG_IMMUTABLE)
1172 const_iv (FS_XFLAG_APPEND)
1173 const_iv (FS_XFLAG_SYNC)
1174 const_iv (FS_XFLAG_NOATIME)
1175 const_iv (FS_XFLAG_NODUMP)
1176 const_iv (FS_XFLAG_RTINHERIT)
1177 const_iv (FS_XFLAG_PROJINHERIT)
1178 const_iv (FS_XFLAG_NOSYMLINKS)
1179 const_iv (FS_XFLAG_EXTSIZE)
1180 const_iv (FS_XFLAG_EXTSZINHERIT)
1181 const_iv (FS_XFLAG_NODEFRAG)
1182 const_iv (FS_XFLAG_FILESTREAM)
1183 const_iv (FS_XFLAG_DAX)
1184 const_iv (FS_XFLAG_HASATTR)
1185
1186 const_iv (FIEMAP_FLAG_SYNC)
1187 const_iv (FIEMAP_FLAG_XATTR)
1188 const_iv (FIEMAP_FLAGS_COMPAT)
1189 const_iv (FIEMAP_EXTENT_LAST)
1190 const_iv (FIEMAP_EXTENT_UNKNOWN)
1191 const_iv (FIEMAP_EXTENT_DELALLOC)
1192 const_iv (FIEMAP_EXTENT_ENCODED)
1193 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1194 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1195 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1196 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1197 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1198 const_iv (FIEMAP_EXTENT_MERGED)
1199 const_iv (FIEMAP_EXTENT_SHARED)
1200
1201 const_iv (SPLICE_F_MOVE)
1202 const_iv (SPLICE_F_NONBLOCK)
1203 const_iv (SPLICE_F_MORE)
1204 const_iv (SPLICE_F_GIFT)
1205
1206 const_iv (EFD_CLOEXEC)
1207 const_iv (EFD_NONBLOCK)
1208 const_iv (EFD_SEMAPHORE)
1209
1210 const_iv (CLOCK_REALTIME)
1211 const_iv (CLOCK_MONOTONIC)
1212 const_iv (CLOCK_BOOTTIME)
1213 const_iv (CLOCK_REALTIME_ALARM)
1214 const_iv (CLOCK_BOOTTIME_ALARM)
1215
1216 const_iv (TFD_NONBLOCK)
1217 const_iv (TFD_CLOEXEC)
1218
1219 const_iv (TFD_TIMER_ABSTIME)
1220 const_iv (TFD_TIMER_CANCEL_ON_SET)
1221
1222 /* these are libeio constants, and are independent of gendef0 */
1223 const_eio (SEEK_SET)
1224 const_eio (SEEK_CUR)
1225 const_eio (SEEK_END)
1226
1227 const_eio (MCL_FUTURE)
1228 const_eio (MCL_CURRENT)
1229
1230 const_eio (MS_ASYNC)
1231 const_eio (MS_INVALIDATE)
1232 const_eio (MS_SYNC)
1233
1234 const_eio (MT_MODIFY)
1235
1236 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1237 const_eio (SYNC_FILE_RANGE_WRITE)
1238 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1239
1240 const_eio (FALLOC_FL_KEEP_SIZE)
1241 const_eio (FALLOC_FL_PUNCH_HOLE)
1242 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1243 const_eio (FALLOC_FL_ZERO_RANGE)
1244 const_eio (FALLOC_FL_INSERT_RANGE)
1245 const_eio (FALLOC_FL_UNSHARE_RANGE)
1246
1247 const_eio (RENAME_NOREPLACE)
1248 const_eio (RENAME_EXCHANGE)
1249 const_eio (RENAME_WHITEOUT)
1250
1251 const_eio (READDIR_DENTS)
1252 const_eio (READDIR_DIRS_FIRST)
1253 const_eio (READDIR_STAT_ORDER)
1254 const_eio (READDIR_FOUND_UNKNOWN)
1255
1256 const_eio (DT_UNKNOWN)
1257 const_eio (DT_FIFO)
1258 const_eio (DT_CHR)
1259 const_eio (DT_DIR)
1260 const_eio (DT_BLK)
1261 const_eio (DT_REG)
1262 const_eio (DT_LNK)
1263 const_eio (DT_SOCK)
1264 const_eio (DT_WHT)
720 } 1265 };
721 1266
722# elif __hpux 1267 aio_stash = gv_stashpv ("IO::AIO" , 1);
723 res = sendfile (ofd, ifd, offset, count, 0, 0); 1268 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1269 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1270 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
724 1271
725# elif __solaris 1272 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
726 { 1273 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
727 struct sendfilevec vec;
728 size_t sbytes;
729 1274
730 vec.sfv_fd = ifd; 1275 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
731 vec.sfv_flag = 0;
732 vec.sfv_off = offset;
733 vec.sfv_len = count;
734 1276
735 res = sendfilev (ofd, &vec, 1, &sbytes); 1277 reinit ();
1278}
736 1279
737 if (res < 0 && sbytes) 1280void
1281reinit ()
1282 PROTOTYPE:
1283
1284void
1285max_poll_reqs (unsigned int nreqs)
1286 PROTOTYPE: $
1287 CODE:
1288 eio_set_max_poll_reqs (nreqs);
1289
1290void
1291max_poll_time (double nseconds)
1292 PROTOTYPE: $
1293 CODE:
1294 eio_set_max_poll_time (nseconds);
1295
1296void
1297min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299 CODE:
1300 eio_set_min_parallel (nthreads);
1301
1302void
1303max_parallel (unsigned int nthreads)
1304 PROTOTYPE: $
1305 CODE:
1306 eio_set_max_parallel (nthreads);
1307
1308void
1309max_idle (unsigned int nthreads)
1310 PROTOTYPE: $
1311 CODE:
1312 eio_set_max_idle (nthreads);
1313
1314void
1315idle_timeout (unsigned int seconds)
1316 PROTOTYPE: $
1317 CODE:
1318 eio_set_idle_timeout (seconds);
1319
1320void
1321max_outstanding (unsigned int maxreqs)
1322 PROTOTYPE: $
1323 CODE:
1324 max_outstanding = maxreqs;
1325
1326void
1327aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1328 PPCODE:
1329{
1330 dREQ;
1331
1332 req->type = EIO_WD_OPEN;
1333 req_set_path1 (req, pathname);
1334
1335 REQ_SEND;
1336}
1337
1338void
1339aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1340 PPCODE:
1341{
1342 dREQ;
1343
1344 req->type = EIO_OPEN;
1345 req_set_path1 (req, pathname);
1346 req->int1 = flags;
1347 req->int2 = mode;
1348
1349 REQ_SEND;
1350}
1351
1352void
1353aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1354 ALIAS:
1355 aio_fsync = EIO_FSYNC
1356 aio_fdatasync = EIO_FDATASYNC
1357 aio_syncfs = EIO_SYNCFS
1358 PPCODE:
1359{
1360 int fd = s_fileno_croak (fh, 0);
1361 dREQ;
1362
1363 req->type = ix;
1364 req->sv1 = newSVsv (fh);
1365 req->int1 = fd;
1366
1367 REQ_SEND;
1368}
1369
1370void
1371aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1372 PPCODE:
1373{
1374 int fd = s_fileno_croak (fh, 0);
1375 dREQ;
1376
1377 req->type = EIO_SYNC_FILE_RANGE;
1378 req->sv1 = newSVsv (fh);
1379 req->int1 = fd;
1380 req->offs = offset;
738 res = sbytes; 1381 req->size = nbytes;
739 } 1382 req->int2 = flags;
740 1383
741# endif 1384 REQ_SEND;
1385}
1386
1387void
1388aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1389 PPCODE:
1390{
1391 int fd = s_fileno_croak (fh, 0);
1392 dREQ;
1393
1394 req->type = EIO_FALLOCATE;
1395 req->sv1 = newSVsv (fh);
1396 req->int1 = fd;
1397 req->int2 = mode;
1398 req->offs = offset;
1399 req->size = len;
1400
1401 REQ_SEND;
1402}
1403
1404void
1405aio_close (SV *fh, SV *callback = &PL_sv_undef)
1406 PPCODE:
1407{
1408 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1409 int fd = s_fileno_croak (fh, 0);
1410 dREQ;
1411
1412 if (expect_false (close_fd < 0))
1413 {
1414 int pipefd [2];
1415
1416 if (
1417#ifdef _WIN32
1418 _pipe (pipefd, 1, _O_BINARY) < 0
742#else 1419#else
743 res = -1; 1420 pipe (pipefd) < 0
744 errno = ENOSYS; 1421 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
745#endif 1422#endif
746 1423 || close (pipefd [1]) < 0
747 if (res < 0
748 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
749#if __solaris
750 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
751#endif
752 )
753 )
754 {
755 /* emulate sendfile. this is a major pain in the ass */
756 dBUF;
757
758 res = 0;
759
760 while (count)
761 {
762 ssize_t cnt;
763
764 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
765
766 if (cnt <= 0)
767 { 1424 )
768 if (cnt && !res) res = -1; 1425 abort (); /*D*/
769 break;
770 }
771 1426
772 cnt = write (ofd, aio_buf, cnt); 1427 close_fd = pipefd [0];
773
774 if (cnt <= 0)
775 {
776 if (cnt && !res) res = -1;
777 break;
778 }
779
780 offset += cnt;
781 res += cnt;
782 count -= cnt;
783 }
784
785 fBUF;
786 }
787
788 return res;
789}
790
791/* read a full directory */
792static int scandir_ (const char *path, void **namesp)
793{
794 DIR *dirp;
795 union
796 {
797 struct dirent d;
798 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
799 } *u;
800 struct dirent *entp;
801 char *name, *names;
802 int memlen = 4096;
803 int memofs = 0;
804 int res = 0;
805 int errorno;
806
807 dirp = opendir (path);
808 if (!dirp)
809 return -1;
810
811 u = malloc (sizeof (*u));
812 names = malloc (memlen);
813
814 if (u && names)
815 for (;;)
816 {
817 errno = 0;
818 readdir_r (dirp, &u->d, &entp);
819
820 if (!entp)
821 break;
822
823 name = entp->d_name;
824
825 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
826 {
827 int len = strlen (name) + 1;
828
829 res++;
830
831 while (memofs + len > memlen)
832 {
833 memlen *= 2;
834 names = realloc (names, memlen);
835 if (!names)
836 break;
837 }
838
839 memcpy (names + memofs, name, len);
840 memofs += len;
841 } 1428 }
842 }
843 1429
844 errorno = errno; 1430 req->type = EIO_DUP2;
845 free (u); 1431 req->int1 = close_fd;
846 closedir (dirp); 1432 req->sv2 = newSVsv (fh);
1433 req->int2 = fd;
847 1434
848 if (errorno) 1435 REQ_SEND;
849 {
850 free (names);
851 errno = errorno;
852 res = -1;
853 }
854
855 *namesp = (void *)names;
856 return res;
857} 1436}
858 1437
859/*****************************************************************************/
860
861static void *aio_proc (void *thr_arg)
862{
863 aio_req req;
864 int type;
865
866 do
867 {
868 pthread_mutex_lock (&reqlock);
869
870 for (;;)
871 {
872 req = reqq_shift (&req_queue);
873
874 if (req)
875 break;
876
877 pthread_cond_wait (&reqwait, &reqlock);
878 }
879
880 pthread_mutex_unlock (&reqlock);
881
882 errno = 0; /* strictly unnecessary */
883 type = req->type; /* remember type for QUIT check */
884
885 if (!(req->flags & FLAG_CANCELLED))
886 switch (type)
887 {
888 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
889 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
890
891 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
892 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
893
894 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
895 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
896 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
897
898 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
899 case REQ_CLOSE: req->result = close (req->fd); break;
900 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
901 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
902 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
903 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
904 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
905
906 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
907 case REQ_FSYNC: req->result = fsync (req->fd); break;
908 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
909
910 case REQ_SLEEP:
911 {
912 struct timeval tv;
913
914 tv.tv_sec = req->fd;
915 tv.tv_usec = req->fd2;
916
917 req->result = select (0, 0, 0, 0, &tv);
918 }
919
920 case REQ_GROUP:
921 case REQ_NOP:
922 case REQ_QUIT:
923 break;
924
925 default:
926 req->result = ENOSYS;
927 break;
928 }
929
930 req->errorno = errno;
931
932 pthread_mutex_lock (&reslock);
933
934 if (!reqq_push (&res_queue, req))
935 /* write a dummy byte to the pipe so fh becomes ready */
936 write (respipe [1], &respipe, 1);
937
938 pthread_mutex_unlock (&reslock);
939 }
940 while (type != REQ_QUIT);
941
942 return 0;
943}
944
945/*****************************************************************************/
946
947static void atfork_prepare (void)
948{
949 pthread_mutex_lock (&reqlock);
950 pthread_mutex_lock (&reslock);
951#if !HAVE_PREADWRITE
952 pthread_mutex_lock (&preadwritelock);
953#endif
954#if !HAVE_READDIR_R
955 pthread_mutex_lock (&readdirlock);
956#endif
957}
958
959static void atfork_parent (void)
960{
961#if !HAVE_READDIR_R
962 pthread_mutex_unlock (&readdirlock);
963#endif
964#if !HAVE_PREADWRITE
965 pthread_mutex_unlock (&preadwritelock);
966#endif
967 pthread_mutex_unlock (&reslock);
968 pthread_mutex_unlock (&reqlock);
969}
970
971static void atfork_child (void)
972{
973 aio_req prv;
974
975 started = 0;
976
977 while (prv = reqq_shift (&req_queue))
978 req_free (prv);
979
980 while (prv = reqq_shift (&res_queue))
981 req_free (prv);
982
983 close (respipe [0]);
984 close (respipe [1]);
985 create_pipe ();
986
987 atfork_parent ();
988}
989
990#define dREQ \
991 aio_req req; \
992 int req_pri = next_pri; \
993 next_pri = DEFAULT_PRI + PRI_BIAS; \
994 \
995 if (SvOK (callback) && !SvROK (callback)) \
996 croak ("callback must be undef or of reference type"); \
997 \
998 Newz (0, req, 1, aio_cb); \
999 if (!req) \
1000 croak ("out of memory during aio_req allocation"); \
1001 \
1002 req->callback = newSVsv (callback); \
1003 req->pri = req_pri
1004
1005#define REQ_SEND \
1006 req_send (req); \
1007 \
1008 if (GIMME_V != G_VOID) \
1009 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1010
1011MODULE = IO::AIO PACKAGE = IO::AIO
1012
1013PROTOTYPES: ENABLE
1014
1015BOOT:
1016{
1017 HV *stash = gv_stashpv ("IO::AIO", 1);
1018 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1021
1022 create_pipe ();
1023 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024}
1025
1026void 1438void
1027min_parallel (nthreads) 1439aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1028 int nthreads
1029 PROTOTYPE: $
1030
1031void
1032max_parallel (nthreads)
1033 int nthreads
1034 PROTOTYPE: $
1035
1036int
1037max_outstanding (nreqs)
1038 int nreqs
1039 PROTOTYPE: $
1040 CODE: 1440 PPCODE:
1041 RETVAL = max_outstanding;
1042 max_outstanding = nreqs;
1043
1044void
1045aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1046 SV * pathname
1047 int flags
1048 int mode
1049 SV * callback
1050 PROTOTYPE: $$$;$
1051 PPCODE:
1052{ 1441{
1442 int fd = s_fileno_croak (fh, 0);
1053 dREQ; 1443 dREQ;
1054 1444
1055 req->type = REQ_OPEN; 1445 req->type = EIO_SEEK;
1056 req->data = newSVsv (pathname); 1446 req->sv1 = newSVsv (fh);
1057 req->dataptr = SvPVbyte_nolen (req->data); 1447 req->int1 = fd;
1058 req->fd = flags; 1448 req->offs = SvVAL64 (offset);
1059 req->mode = mode; 1449 req->int2 = whence;
1060 1450
1061 REQ_SEND; 1451 REQ_SEND;
1062} 1452}
1063 1453
1064void 1454void
1065aio_close (fh,callback=&PL_sv_undef) 1455aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1066 SV * fh
1067 SV * callback
1068 PROTOTYPE: $;$
1069 ALIAS: 1456 ALIAS:
1070 aio_close = REQ_CLOSE
1071 aio_fsync = REQ_FSYNC
1072 aio_fdatasync = REQ_FDATASYNC
1073 PPCODE:
1074{
1075 dREQ;
1076
1077 req->type = ix;
1078 req->fh = newSVsv (fh);
1079 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080
1081 REQ_SEND (req);
1082}
1083
1084void
1085aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1086 SV * fh
1087 UV offset
1088 UV length
1089 SV * data
1090 UV dataoffset
1091 SV * callback
1092 ALIAS:
1093 aio_read = REQ_READ 1457 aio_read = EIO_READ
1094 aio_write = REQ_WRITE 1458 aio_write = EIO_WRITE
1095 PROTOTYPE: $$$$$;$
1096 PPCODE: 1459 PPCODE:
1097{ 1460{
1098 aio_req req;
1099 STRLEN svlen; 1461 STRLEN svlen;
1462 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100 char *svptr = SvPVbyte (data, svlen); 1463 char *svptr = SvPVbyte (data, svlen);
1101 1464 UV len = SvUV (length);
1102 SvUPGRADE (data, SVt_PV);
1103 SvPOK_on (data);
1104 1465
1105 if (dataoffset < 0) 1466 if (dataoffset < 0)
1106 dataoffset += svlen; 1467 dataoffset += svlen;
1107 1468
1108 if (dataoffset < 0 || dataoffset > svlen) 1469 if (dataoffset < 0 || dataoffset > svlen)
1109 croak ("data offset outside of string"); 1470 croak ("dataoffset outside of data scalar");
1110 1471
1111 if (ix == REQ_WRITE) 1472 if (ix == EIO_WRITE)
1112 { 1473 {
1113 /* write: check length and adjust. */ 1474 /* write: check length and adjust. */
1114 if (length < 0 || length + dataoffset > svlen) 1475 if (!SvOK (length) || len + dataoffset > svlen)
1115 length = svlen - dataoffset; 1476 len = svlen - dataoffset;
1116 } 1477 }
1117 else 1478 else
1118 { 1479 {
1119 /* read: grow scalar as necessary */ 1480 /* read: check type and grow scalar as necessary */
1481 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1120 svptr = SvGROW (data, length + dataoffset); 1482 svptr = sv_grow (data, len + dataoffset + 1);
1483 else if (SvCUR (data) < len + dataoffset)
1484 croak ("length + dataoffset outside of scalar, and cannot grow");
1121 } 1485 }
1122
1123 if (length < 0)
1124 croak ("length must not be negative");
1125 1486
1126 { 1487 {
1127 dREQ; 1488 dREQ;
1128 1489
1129 req->type = ix; 1490 req->type = ix;
1130 req->fh = newSVsv (fh); 1491 req->sv1 = newSVsv (fh);
1131 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1492 req->int1 = fd;
1132 : IoOFP (sv_2io (fh))); 1493 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133 req->offset = offset; 1494 req->size = len;
1134 req->length = length;
1135 req->data = SvREFCNT_inc (data); 1495 req->sv2 = SvREFCNT_inc (data);
1136 req->dataptr = (char *)svptr + dataoffset; 1496 req->ptr2 = (char *)svptr + dataoffset;
1497 req->stroffset = dataoffset;
1137 1498
1138 if (!SvREADONLY (data)) 1499 if (!SvREADONLY (data))
1139 { 1500 {
1140 SvREADONLY_on (data); 1501 SvREADONLY_on (data);
1141 req->data2ptr = (void *)data; 1502 req->flags |= FLAG_SV2_RO_OFF;
1142 } 1503 }
1143 1504
1144 REQ_SEND; 1505 REQ_SEND;
1145 } 1506 }
1146} 1507}
1147 1508
1148void 1509void
1149aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1510aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1150 SV * out_fh 1511 ALIAS:
1151 SV * in_fh 1512 aio_ioctl = EIO_IOCTL
1152 UV in_offset 1513 aio_fcntl = EIO_FCNTL
1153 UV length
1154 SV * callback
1155 PROTOTYPE: $$$$;$
1156 PPCODE: 1514 PPCODE:
1157{ 1515{
1158 dREQ; 1516 int fd = s_fileno_croak (fh, 0);
1517 char *svptr;
1159 1518
1160 req->type = REQ_SENDFILE; 1519 if (SvPOK (arg) || !SvNIOK (arg))
1161 req->fh = newSVsv (out_fh);
1162 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163 req->fh2 = newSVsv (in_fh);
1164 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165 req->offset = in_offset;
1166 req->length = length;
1167
1168 REQ_SEND;
1169}
1170
1171void
1172aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1173 SV * fh
1174 UV offset
1175 IV length
1176 SV * callback
1177 PROTOTYPE: $$$;$
1178 PPCODE:
1179{
1180 dREQ;
1181
1182 req->type = REQ_READAHEAD;
1183 req->fh = newSVsv (fh);
1184 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185 req->offset = offset;
1186 req->length = length;
1187
1188 REQ_SEND;
1189}
1190
1191void
1192aio_stat (fh_or_path,callback=&PL_sv_undef)
1193 SV * fh_or_path
1194 SV * callback
1195 ALIAS:
1196 aio_stat = REQ_STAT
1197 aio_lstat = REQ_LSTAT
1198 PPCODE:
1199{
1200 dREQ;
1201
1202 New (0, req->statdata, 1, Stat_t);
1203 if (!req->statdata)
1204 { 1520 {
1205 req_free (req); 1521 STRLEN svlen;
1206 croak ("out of memory during aio_req->statdata allocation"); 1522 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1207 } 1523#ifdef IOCPARM_LEN
1524 STRLEN need = IOCPARM_LEN (request);
1525#else
1526 STRLEN need = 256;
1527#endif
1208 1528
1209 if (SvPOK (fh_or_path)) 1529 if (svlen < need)
1210 { 1530 svptr = SvGROW (arg, need);
1211 req->type = ix;
1212 req->data = newSVsv (fh_or_path);
1213 req->dataptr = SvPVbyte_nolen (req->data);
1214 } 1531 }
1215 else 1532 else
1533 svptr = (char *)SvIV (arg);
1534
1216 { 1535 {
1536 dREQ;
1537
1217 req->type = REQ_FSTAT; 1538 req->type = ix;
1218 req->fh = newSVsv (fh_or_path); 1539 req->sv1 = newSVsv (fh);
1219 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1540 req->int1 = fd;
1541 req->int2 = (long)request;
1542 req->sv2 = SvREFCNT_inc (arg);
1543 req->ptr2 = svptr;
1544
1545 REQ_SEND;
1220 } 1546 }
1547}
1548
1549void
1550aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1551 ALIAS:
1552 aio_readlink = EIO_READLINK
1553 aio_realpath = EIO_REALPATH
1554 PPCODE:
1555{
1556 dREQ;
1557
1558 req->type = ix;
1559 req_set_path1 (req, pathname);
1221 1560
1222 REQ_SEND; 1561 REQ_SEND;
1223} 1562}
1224 1563
1225void 1564void
1226aio_unlink (pathname,callback=&PL_sv_undef) 1565aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1227 SV * pathname 1566 PPCODE:
1228 SV * callback 1567{
1568 int ifd = s_fileno_croak (in_fh , 0);
1569 int ofd = s_fileno_croak (out_fh, 1);
1570 dREQ;
1571
1572 req->type = EIO_SENDFILE;
1573 req->sv1 = newSVsv (out_fh);
1574 req->int1 = ofd;
1575 req->sv2 = newSVsv (in_fh);
1576 req->int2 = ifd;
1577 req->offs = in_offset;
1578 req->size = length;
1579
1580 REQ_SEND;
1581}
1582
1583void
1584aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1585 PPCODE:
1586{
1587 int fd = s_fileno_croak (fh, 0);
1588 dREQ;
1589
1590 req->type = EIO_READAHEAD;
1591 req->sv1 = newSVsv (fh);
1592 req->int1 = fd;
1593 req->offs = offset;
1594 req->size = length;
1595
1596 REQ_SEND;
1597}
1598
1599void
1600aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1229 ALIAS: 1601 ALIAS:
1602 aio_stat = EIO_STAT
1603 aio_lstat = EIO_LSTAT
1604 aio_statvfs = EIO_STATVFS
1605 PPCODE:
1606{
1607 dREQ;
1608
1609 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1610
1611 REQ_SEND;
1612}
1613
1614UV
1615major (UV dev)
1616 ALIAS:
1617 minor = 1
1618 CODE:
1619 RETVAL = ix ? minor (dev) : major (dev);
1620 OUTPUT:
1621 RETVAL
1622
1623UV
1624makedev (UV maj, UV min)
1625 CODE:
1626 RETVAL = makedev (maj, min);
1627 OUTPUT:
1628 RETVAL
1629
1630void
1631aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1632 PPCODE:
1633{
1634 dREQ;
1635
1636 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1637 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1638 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1639
1640 REQ_SEND;
1641}
1642
1643void
1644aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1645 PPCODE:
1646{
1647 dREQ;
1648
1649 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1650 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1651
1652 REQ_SEND;
1653}
1654
1655void
1656aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1657 PPCODE:
1658{
1659 dREQ;
1660
1661 req->int2 = mode;
1662 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1663
1664 REQ_SEND;
1665}
1666
1667void
1668aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1669 PPCODE:
1670{
1671 dREQ;
1672
1673 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1674 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1675 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1676
1677 REQ_SEND;
1678}
1679
1680void
1681aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1682 PPCODE:
1683{
1684 dREQ;
1685
1686 req->type = EIO_READDIR;
1687 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1688
1689 if (flags & EIO_READDIR_DENTS)
1690 req->int1 |= EIO_READDIR_CUSTOM2;
1691
1692 req_set_path1 (req, pathname);
1693
1694 REQ_SEND;
1695}
1696
1697void
1698aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1699 PPCODE:
1700{
1701 dREQ;
1702
1703 req->type = EIO_MKDIR;
1704 req->int2 = mode;
1705 req_set_path1 (req, pathname);
1706
1707 REQ_SEND;
1708}
1709
1710void
1711aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1712 ALIAS:
1230 aio_unlink = REQ_UNLINK 1713 aio_unlink = EIO_UNLINK
1231 aio_rmdir = REQ_RMDIR 1714 aio_rmdir = EIO_RMDIR
1232 aio_readdir = REQ_READDIR 1715 aio_readdir = EIO_READDIR
1233 PPCODE: 1716 PPCODE:
1234{ 1717{
1235 dREQ; 1718 dREQ;
1236 1719
1237 req->type = ix; 1720 req->type = ix;
1238 req->data = newSVsv (pathname); 1721 req_set_path1 (req, pathname);
1239 req->dataptr = SvPVbyte_nolen (req->data); 1722
1240
1241 REQ_SEND; 1723 REQ_SEND;
1242} 1724}
1243 1725
1244void 1726void
1245aio_link (oldpath,newpath,callback=&PL_sv_undef) 1727aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1246 SV * oldpath
1247 SV * newpath
1248 SV * callback
1249 ALIAS: 1728 ALIAS:
1250 aio_link = REQ_LINK 1729 aio_link = EIO_LINK
1251 aio_symlink = REQ_SYMLINK 1730 aio_symlink = EIO_SYMLINK
1252 aio_rename = REQ_RENAME 1731 aio_rename = EIO_RENAME
1253 PPCODE: 1732 PPCODE:
1254{ 1733{
1734 eio_wd wd2 = 0;
1255 dREQ; 1735 dREQ;
1256 1736
1257 req->type = ix; 1737 req->type = ix;
1258 req->fh = newSVsv (oldpath); 1738 req_set_path1 (req, oldpath);
1259 req->data2ptr = SvPVbyte_nolen (req->fh); 1739 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1260 req->data = newSVsv (newpath); 1740 req->int3 = (long)wd2;
1261 req->dataptr = SvPVbyte_nolen (req->data);
1262 1741
1263 REQ_SEND; 1742 REQ_SEND;
1264} 1743}
1265 1744
1266void 1745void
1267aio_sleep (delay,callback=&PL_sv_undef) 1746aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1268 double delay
1269 SV * callback
1270 PPCODE: 1747 PPCODE:
1271{ 1748{
1749 eio_wd wd2 = 0;
1272 dREQ; 1750 dREQ;
1273 1751
1274 req->type = REQ_SLEEP; 1752 req->type = EIO_RENAME;
1275 req->fd = delay < 0. ? 0 : delay; 1753 req_set_path1 (req, oldpath);
1276 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1754 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1277 1755 req->int2 = flags;
1756 req->int3 = (long)wd2;
1757
1278 REQ_SEND; 1758 REQ_SEND;
1279} 1759}
1280 1760
1281void 1761void
1282aio_group (callback=&PL_sv_undef) 1762aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1283 SV * callback 1763 PPCODE:
1284 PROTOTYPE: ;$ 1764{
1765 dREQ;
1766
1767 req->type = EIO_MKNOD;
1768 req->int2 = (mode_t)mode;
1769 req->offs = dev;
1770 req_set_path1 (req, pathname);
1771
1772 REQ_SEND;
1773}
1774
1775void
1776aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1777 ALIAS:
1778 aio_mtouch = EIO_MTOUCH
1779 aio_msync = EIO_MSYNC
1285 PPCODE: 1780 PPCODE:
1286{ 1781{
1782 STRLEN svlen;
1783 char *svptr = SvPVbyte (data, svlen);
1784 UV len = SvUV (length);
1785
1786 if (flags < 0)
1787 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1788
1789 if (offset < 0)
1790 offset += svlen;
1791
1792 if (offset < 0 || offset > svlen)
1793 croak ("offset outside of scalar");
1794
1795 if (!SvOK (length) || len + offset > svlen)
1796 len = svlen - offset;
1797
1798 {
1799 dREQ;
1800
1801 req->type = ix;
1802 req->sv2 = SvREFCNT_inc (data);
1803 req->ptr2 = (char *)svptr + offset;
1804 req->size = len;
1805 req->int1 = flags;
1806
1807 REQ_SEND;
1808 }
1809}
1810
1811void
1812aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1813 PPCODE:
1814{
1815 STRLEN svlen;
1816 char *svptr = SvPVbyte (data, svlen);
1817 UV len = SvUV (length);
1818
1819 if (offset < 0)
1820 offset += svlen;
1821
1822 if (offset < 0 || offset > svlen)
1823 croak ("offset outside of scalar");
1824
1825 if (!SvOK (length) || len + offset > svlen)
1826 len = svlen - offset;
1827
1828 {
1829 dREQ;
1830
1831 req->type = EIO_MLOCK;
1832 req->sv2 = SvREFCNT_inc (data);
1833 req->ptr2 = (char *)svptr + offset;
1834 req->size = len;
1835
1836 REQ_SEND;
1837 }
1838}
1839
1840void
1841aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1842 PPCODE:
1843{
1844 dREQ;
1845
1846 req->type = EIO_MLOCKALL;
1847 req->int1 = flags;
1848
1849 REQ_SEND;
1850}
1851
1852void
1853aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1854 PPCODE:
1855{
1856 int fd = s_fileno_croak (fh, 0);
1287 dREQ; 1857 dREQ;
1288 1858
1289 req->type = REQ_GROUP; 1859 req->type = EIO_CUSTOM;
1290 req_send (req); 1860 req->sv1 = newSVsv (fh);
1861 req->int1 = fd;
1291 1862
1292 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1863 req->feed = fiemap;
1293} 1864#if HAVE_FIEMAP
1865 /* keep our fingers crossed that the next two types are 64 bit */
1866 req->offs = start;
1867 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1868 req->int2 = flags;
1869 req->int3 = SvOK (count) ? SvIV (count) : -1;
1870#endif
1294 1871
1872 REQ_SEND;
1873}
1874
1295void 1875void
1296aio_nop (callback=&PL_sv_undef) 1876aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1297 SV * callback 1877 PPCODE:
1878{
1879 char *svptr = 0;
1880
1881 sv_clear_foreign (data);
1882
1883 if (length) /* known length, directly read into scalar */
1884 {
1885 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1886 svptr = sv_grow (data, length + 1);
1887 else if (SvCUR (data) < length)
1888 croak ("length outside of scalar, and cannot grow");
1889 else
1890 svptr = SvPVbyte_nolen (data);
1891 }
1892
1893 {
1894 dREQ;
1895
1896 req->type = EIO_SLURP;
1897 req_set_path1 (req, pathname);
1898 req->offs = offset;
1899 req->size = length;
1900 req->sv2 = SvREFCNT_inc (data);
1901 req->ptr2 = svptr;
1902
1903 if (!SvREADONLY (data))
1904 {
1905 SvREADONLY_on (data);
1906 req->flags |= FLAG_SV2_RO_OFF;
1907 }
1908
1909 REQ_SEND;
1910 }
1911}
1912
1913void
1914aio_busy (double delay, SV *callback = &PL_sv_undef)
1298 PPCODE: 1915 PPCODE:
1299{ 1916{
1300 dREQ; 1917 dREQ;
1301 1918
1302 req->type = REQ_NOP; 1919 req->type = EIO_BUSY;
1920 req->nv1 = delay < 0. ? 0. : delay;
1303 1921
1304 REQ_SEND; 1922 REQ_SEND;
1305} 1923}
1306 1924
1307void 1925void
1926aio_group (SV *callback = &PL_sv_undef)
1927 PPCODE:
1928{
1929 dREQ;
1930
1931 req->type = EIO_GROUP;
1932
1933 PUTBACK;
1934 req_submit (req);
1935 SPAGAIN;
1936
1937 XPUSHs (req_sv (req, aio_grp_stash));
1938}
1939
1940void
1941aio_nop (SV *callback = &PL_sv_undef)
1942 ALIAS:
1943 aio_nop = EIO_NOP
1944 aio_sync = EIO_SYNC
1945 PPCODE:
1946{
1947 dREQ;
1948
1949 req->type = ix;
1950
1951 REQ_SEND;
1952}
1953
1954int
1308aioreq_pri (int pri = DEFAULT_PRI) 1955aioreq_pri (int pri = NO_INIT)
1309 CODE: 1956 CODE:
1957 RETVAL = next_pri;
1958 if (items > 0)
1959 {
1310 if (pri < PRI_MIN) pri = PRI_MIN; 1960 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311 if (pri > PRI_MAX) pri = PRI_MAX; 1961 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312 next_pri = pri + PRI_BIAS; 1962 next_pri = pri;
1963 }
1964 OUTPUT:
1965 RETVAL
1966
1967void
1968aioreq_nice (int nice = 0)
1969 CODE:
1970 nice = next_pri - nice;
1971 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1972 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1973 next_pri = nice;
1313 1974
1314void 1975void
1315flush () 1976flush ()
1316 PROTOTYPE:
1317 CODE: 1977 CODE:
1318 while (nreqs) 1978 while (eio_nreqs ())
1319 { 1979 {
1320 poll_wait (); 1980 poll_wait ();
1321 poll_cb (); 1981 poll_cb ();
1322 } 1982 }
1323 1983
1324void 1984int
1325poll() 1985poll ()
1326 PROTOTYPE:
1327 CODE: 1986 CODE:
1328 if (nreqs)
1329 {
1330 poll_wait (); 1987 poll_wait ();
1331 poll_cb (); 1988 RETVAL = poll_cb ();
1332 }
1333
1334int
1335poll_fileno()
1336 PROTOTYPE:
1337 CODE:
1338 RETVAL = respipe [0];
1339 OUTPUT: 1989 OUTPUT:
1340 RETVAL 1990 RETVAL
1341 1991
1342int 1992int
1993poll_fileno ()
1994 CODE:
1995 RETVAL = s_epipe_fd (&respipe);
1996 OUTPUT:
1997 RETVAL
1998
1999int
1343poll_cb(...) 2000poll_cb (...)
1344 PROTOTYPE: 2001 PROTOTYPE:
1345 CODE: 2002 CODE:
1346 RETVAL = poll_cb (); 2003 RETVAL = poll_cb ();
1347 OUTPUT: 2004 OUTPUT:
1348 RETVAL 2005 RETVAL
1349 2006
1350void 2007void
1351poll_wait() 2008poll_wait ()
1352 PROTOTYPE:
1353 CODE: 2009 CODE:
1354 if (nreqs)
1355 poll_wait (); 2010 poll_wait ();
1356 2011
1357int 2012int
1358nreqs() 2013nreqs ()
1359 PROTOTYPE:
1360 CODE: 2014 CODE:
1361 RETVAL = nreqs; 2015 RETVAL = eio_nreqs ();
1362 OUTPUT: 2016 OUTPUT:
1363 RETVAL 2017 RETVAL
1364 2018
2019int
2020nready ()
2021 CODE:
2022 RETVAL = eio_nready ();
2023 OUTPUT:
2024 RETVAL
2025
2026int
2027npending ()
2028 CODE:
2029 RETVAL = eio_npending ();
2030 OUTPUT:
2031 RETVAL
2032
2033int
2034nthreads ()
2035 CODE:
2036 RETVAL = eio_nthreads ();
2037 OUTPUT:
2038 RETVAL
2039
2040int
2041fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2042 CODE:
2043 RETVAL = posix_fadvise (fh, offset, length, advice);
2044 OUTPUT:
2045 RETVAL
2046
2047IV
2048sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2049 CODE:
2050 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2051 OUTPUT:
2052 RETVAL
2053
2054void
2055mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2056 PPCODE:
2057 sv_clear_foreign (scalar);
2058{
2059 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2060 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2061 if (addr == (void *)-1)
2062 XSRETURN_NO;
2063
2064 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2065
2066 if (!(prot & PROT_WRITE))
2067 SvREADONLY_on (scalar);
2068
2069 XSRETURN_YES;
2070}
2071
2072void
2073munmap (SV *scalar)
2074 CODE:
2075 sv_clear_foreign (scalar);
2076
2077SV *
2078mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2079 CODE:
2080{
2081 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2082 void *new;
2083
2084 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2085 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2086
2087 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2088
2089 RETVAL = &PL_sv_no;
2090
2091 if (new != (void *)-1)
2092 {
2093 RETVAL = new == (void *)mg->mg_ptr
2094 ? newSVpvn ("0 but true", 10)
2095 : &PL_sv_yes;
2096
2097 mg->mg_ptr = (char *)new;
2098 mg->mg_obj = (SV *)new_length;
2099
2100 SvPVX (scalar) = mg->mg_ptr;
2101 SvCUR_set (scalar, new_length);
2102 }
2103}
2104 OUTPUT:
2105 RETVAL
2106
2107int
2108madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2109 ALIAS:
2110 mprotect = 1
2111 CODE:
2112{
2113 STRLEN svlen;
2114 void *addr = SvPVbyte (scalar, svlen);
2115 STRLEN len = SvUV (length);
2116
2117 if (offset < 0)
2118 offset += svlen;
2119
2120 if (offset < 0 || offset > svlen)
2121 croak ("offset outside of scalar");
2122
2123 if (!SvOK (length) || len + offset > svlen)
2124 len = svlen - offset;
2125
2126 addr = (void *)(((intptr_t)addr) + offset);
2127 eio_page_align (&addr, &len);
2128
2129 switch (ix)
2130 {
2131 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2132 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2133 }
2134}
2135 OUTPUT:
2136 RETVAL
2137
2138int
2139munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2140 CODE:
2141{
2142 STRLEN svlen;
2143 void *addr = SvPVbyte (scalar, svlen);
2144 size_t len = SvUV (length);
2145
2146 if (offset < 0)
2147 offset += svlen;
2148
2149 if (offset < 0 || offset > svlen)
2150 croak ("offset outside of scalar");
2151
2152 if (!SvOK (length) || len + offset > svlen)
2153 len = svlen - offset;
2154
2155 addr = (void *)(((intptr_t)addr) + offset);
2156 eio_page_align (&addr, &len);
2157#if _POSIX_MEMLOCK_RANGE
2158 RETVAL = munlock (addr, len);
2159#else
2160 RETVAL = EIO_ENOSYS ();
2161#endif
2162}
2163 OUTPUT:
2164 RETVAL
2165
2166int
2167munlockall ()
2168 CODE:
2169#if _POSIX_MEMLOCK
2170 munlockall ();
2171#else
2172 RETVAL = EIO_ENOSYS ();
2173#endif
2174 OUTPUT:
2175 RETVAL
2176
2177int
2178splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2179 CODE:
2180{
2181#if HAVE_LINUX_SPLICE
2182 loff_t off_in_, off_out_;
2183 RETVAL = splice (
2184 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2185 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2186 length, flags
2187 );
2188#else
2189 RETVAL = EIO_ENOSYS ();
2190#endif
2191}
2192 OUTPUT:
2193 RETVAL
2194
2195int
2196tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2197 CODE:
2198#if HAVE_LINUX_SPLICE
2199 RETVAL = tee (rfh, wfh, length, flags);
2200#else
2201 RETVAL = EIO_ENOSYS ();
2202#endif
2203 OUTPUT:
2204 RETVAL
2205
2206int
2207pipesize (aio_rfd rfh, int new_size = -1)
2208 PROTOTYPE: $;$
2209 CODE:
2210#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2211 if (new_size >= 0)
2212 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2213 else
2214 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2215#else
2216 errno = ENOSYS;
2217 RETVAL = -1;
2218#endif
2219 OUTPUT:
2220 RETVAL
2221
2222void
2223pipe2 (int flags = 0)
2224 PROTOTYPE: ;$
2225 PPCODE:
2226{
2227 int fd[2];
2228 int res;
2229
2230 if (flags)
2231#if HAVE_PIPE2
2232 res = pipe2 (fd, flags);
2233#else
2234 res = (errno = ENOSYS, -1);
2235#endif
2236 else
2237 res = pipe (fd);
2238
2239 if (!res)
2240 {
2241 EXTEND (SP, 2);
2242 PUSHs (newmortalFH (fd[0], O_RDONLY));
2243 PUSHs (newmortalFH (fd[1], O_WRONLY));
2244 }
2245}
2246
2247void
2248eventfd (unsigned int initval = 0, int flags = 0)
2249 PPCODE:
2250{
2251 int fd;
2252#if HAVE_EVENTFD
2253 fd = eventfd (initval, flags);
2254#else
2255 fd = (errno = ENOSYS, -1);
2256#endif
2257
2258 XPUSHs (newmortalFH (fd, O_RDWR));
2259}
2260
2261void
2262timerfd_create (int clockid, int flags = 0)
2263 PPCODE:
2264{
2265 int fd;
2266#if HAVE_TIMERFD
2267 fd = timerfd_create (clockid, flags);
2268#else
2269 fd = (errno = ENOSYS, -1);
2270#endif
2271
2272 XPUSHs (newmortalFH (fd, O_RDWR));
2273}
2274
2275void
2276timerfd_settime (SV *fh, int flags, NV interval, NV value)
2277 PPCODE:
2278{
2279 int fd = s_fileno_croak (fh, 0);
2280#if HAVE_TIMERFD
2281 int res;
2282 struct itimerspec its, ots;
2283
2284 ts_set (&its.it_interval, interval);
2285 ts_set (&its.it_value , value);
2286 res = timerfd_settime (fd, flags, &its, &ots);
2287
2288 if (!res)
2289 {
2290 EXTEND (SP, 2);
2291 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2292 PUSHs (newSVnv (ts_get (&ots.it_value)));
2293 }
2294#else
2295 errno = ENOSYS;
2296#endif
2297}
2298
2299void
2300timerfd_gettime (SV *fh)
2301 PPCODE:
2302{
2303 int fd = s_fileno_croak (fh, 0);
2304#if HAVE_TIMERFD
2305 int res;
2306 struct itimerspec ots;
2307 res = timerfd_gettime (fd, &ots);
2308
2309 if (!res)
2310 {
2311 EXTEND (SP, 2);
2312 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2313 PUSHs (newSVnv (ts_get (&ots.it_value)));
2314 }
2315#else
2316 errno = ENOSYS;
2317#endif
2318}
2319
2320UV
2321get_fdlimit ()
2322 CODE:
2323#if HAVE_RLIMITS
2324 struct rlimit rl;
2325 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2326 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2327#endif
2328 XSRETURN_UNDEF;
2329 OUTPUT:
2330 RETVAL
2331
2332void
2333min_fdlimit (UV limit = 0x7fffffffU)
2334 CODE:
2335{
2336#if HAVE_RLIMITS
2337 struct rlimit rl;
2338 rlim_t orig_rlim_max;
2339 UV bit;
2340
2341 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2342 goto fail;
2343
2344 if (rl.rlim_cur == RLIM_INFINITY)
2345 XSRETURN_YES;
2346
2347 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2348
2349 if (rl.rlim_cur < limit)
2350 {
2351 rl.rlim_cur = limit;
2352
2353 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2354 rl.rlim_max = rl.rlim_cur;
2355 }
2356
2357 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2358 XSRETURN_YES;
2359
2360 if (errno == EPERM)
2361 {
2362 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2363 /* our limit overflows a system-wide limit */
2364 /* try an adaptive algorithm, but do not lower the hardlimit */
2365 rl.rlim_max = 0;
2366 for (bit = 0x40000000U; bit; bit >>= 1)
2367 {
2368 rl.rlim_max |= bit;
2369 rl.rlim_cur = rl.rlim_max;
2370
2371 /* nevr decrease the hard limit */
2372 if (rl.rlim_max < orig_rlim_max)
2373 break;
2374
2375 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2376 rl.rlim_max &= ~bit; /* too high, remove bit again */
2377 }
2378
2379 /* now, raise the soft limit to the max permitted */
2380 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2381 {
2382 rl.rlim_cur = rl.rlim_max;
2383 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2384 errno = EPERM;
2385 }
2386 }
2387#endif
2388 fail:
2389 XSRETURN_UNDEF;
2390}
2391
2392void _on_next_submit (SV *cb)
2393 CODE:
2394 SvREFCNT_dec (on_next_submit);
2395 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2396
1365PROTOTYPES: DISABLE 2397PROTOTYPES: DISABLE
2398
2399MODULE = IO::AIO PACKAGE = IO::AIO::WD
2400
2401BOOT:
2402{
2403 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2404 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2405}
2406
2407void
2408DESTROY (SV *self)
2409 CODE:
2410{
2411 aio_wd wd = SvAIO_WD (self);
2412#if HAVE_AT
2413 {
2414 SV *callback = &PL_sv_undef;
2415 dREQ; /* clobbers next_pri :/ */
2416 next_pri = req->pri; /* restore next_pri */
2417 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2418 req->type = EIO_WD_CLOSE;
2419 req->wd = wd;
2420 REQ_SEND;
2421 }
2422#else
2423 eio_wd_close_sync (wd);
2424#endif
2425}
1366 2426
1367MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2427MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368 2428
1369void 2429void
1370cancel (aio_req_ornot req) 2430cancel (aio_req_ornot req)
1371 CODE: 2431 CODE:
1372 req_cancel (req); 2432 eio_cancel (req);
1373 2433
1374void 2434void
1375cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2435cb (aio_req_ornot req, SV *callback = NO_INIT)
1376 CODE: 2436 PPCODE:
2437{
2438 if (GIMME_V != G_VOID)
2439 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2440
2441 if (items > 1)
2442 {
2443 SV *cb_cv = get_cb (callback);
2444
1377 SvREFCNT_dec (req->callback); 2445 SvREFCNT_dec (req->callback);
1378 req->callback = newSVsv (callback); 2446 req->callback = SvREFCNT_inc (cb_cv);
2447 }
2448}
1379 2449
1380MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2450MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1381 2451
1382void 2452void
1383add (aio_req grp, ...) 2453add (aio_req grp, ...)
1384 PPCODE: 2454 PPCODE:
1385{ 2455{
1386 int i; 2456 int i;
1387 aio_req req;
1388 2457
1389 if (grp->fd == 2) 2458 if (grp->int1 == 2)
1390 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2459 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1391 2460
1392 for (i = 1; i < items; ++i ) 2461 for (i = 1; i < items; ++i )
1393 { 2462 {
2463 aio_req req;
2464
1394 if (GIMME_V != G_VOID) 2465 if (GIMME_V != G_VOID)
1395 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2466 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1396 2467
1397 req = SvAIO_REQ (ST (i)); 2468 req = SvAIO_REQ (ST (i));
1398 2469
1399 if (req) 2470 if (req)
1400 { 2471 eio_grp_add (grp, req);
1401 ++grp->length;
1402 req->grp = grp;
1403
1404 req->grp_prev = 0;
1405 req->grp_next = grp->grp_first;
1406
1407 if (grp->grp_first)
1408 grp->grp_first->grp_prev = req;
1409
1410 grp->grp_first = req;
1411 }
1412 } 2472 }
1413} 2473}
2474
2475void
2476cancel_subs (aio_req_ornot req)
2477 CODE:
2478 req_cancel_subs (req);
1414 2479
1415void 2480void
1416result (aio_req grp, ...) 2481result (aio_req grp, ...)
1417 CODE: 2482 CODE:
1418{ 2483{
1419 int i; 2484 int i;
2485 AV *av;
2486
2487 grp->errorno = errno;
2488
1420 AV *av = newAV (); 2489 av = newAV ();
2490 av_extend (av, items - 1);
1421 2491
1422 for (i = 1; i < items; ++i ) 2492 for (i = 1; i < items; ++i )
1423 av_push (av, newSVsv (ST (i))); 2493 av_push (av, newSVsv (ST (i)));
1424 2494
1425 SvREFCNT_dec (grp->data); 2495 SvREFCNT_dec (grp->sv1);
1426 grp->data = (SV *)av; 2496 grp->sv1 = (SV *)av;
1427} 2497}
2498
2499void
2500errno (aio_req grp, int errorno = errno)
2501 CODE:
2502 grp->errorno = errorno;
1428 2503
1429void 2504void
1430limit (aio_req grp, int limit) 2505limit (aio_req grp, int limit)
1431 CODE: 2506 CODE:
1432 grp->fd2 = limit; 2507 eio_grp_limit (grp, limit);
1433 aio_grp_feed (grp);
1434 2508
1435void 2509void
1436feed (aio_req grp, SV *callback=&PL_sv_undef) 2510feed (aio_req grp, SV *callback = &PL_sv_undef)
1437 CODE: 2511 CODE:
1438{ 2512{
1439 SvREFCNT_dec (grp->fh2); 2513 SvREFCNT_dec (grp->sv2);
1440 grp->fh2 = newSVsv (callback); 2514 grp->sv2 = newSVsv (callback);
2515 grp->feed = aio_grp_feed;
1441 2516
1442 if (grp->fd2 <= 0) 2517 if (grp->int2 <= 0)
1443 grp->fd2 = 2; 2518 grp->int2 = 2;
1444 2519
1445 aio_grp_feed (grp); 2520 eio_grp_limit (grp, grp->int2);
1446} 2521}
1447 2522

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