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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.266 by root, Tue Aug 14 14:03:14 2018 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux
5# define _GNU_SOURCE
6#endif
7
8#define _REENTRANT 1
9 2
10#include <errno.h> 3#include <errno.h>
11 4
12#include "EXTERN.h" 5#include "EXTERN.h"
13#include "perl.h" 6#include "perl.h"
14#include "XSUB.h" 7#include "XSUB.h"
15 8
16#include "autoconf/config.h" 9#if !defined mg_findext
17 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
18#include <pthread.h> 11#endif
19 12
20#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
21#include <errno.h> 15#include <errno.h>
22#include <sys/time.h>
23#include <sys/select.h>
24#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
25#include <sys/stat.h> 18#include <sys/stat.h>
26#include <limits.h> 19#include <limits.h>
27#include <unistd.h>
28#include <fcntl.h> 20#include <fcntl.h>
29#include <signal.h>
30#include <sched.h> 21#include <sched.h>
31 22
32#if HAVE_SENDFILE 23#if HAVE_SYS_MKDEV_H
33# if __linux
34# include <sys/sendfile.h>
35# elif __freebsd
36# include <sys/socket.h> 24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
26# include <sys/sysmacros.h>
27#endif
28
29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
37# include <sys/uio.h> 30# include <sys/mman.h>
38# elif __hpux 31#endif
32
33/* the incompetent fool that created musl keeps __linux__, refuses
34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89
90 #define EIO_STRUCT_STAT struct _stati64
91 #define EIO_STRUCT_STATI64
92
93#else
94
39# include <sys/socket.h> 95 #include <sys/time.h>
40# elif __solaris /* not yet */
41# include <sys/sendfile.h> 96 #include <sys/select.h>
97 #include <unistd.h>
98 #include <utime.h>
99 #include <signal.h>
100
101 #define EIO_STRUCT_STAT Stat_t
102
103#endif
104
105/*****************************************************************************/
106
107#if __GNUC__ >= 3
108# define expect(expr,value) __builtin_expect ((expr),(value))
109#else
110# define expect(expr,value) (expr)
111#endif
112
113#define expect_false(expr) expect ((expr) != 0, 0)
114#define expect_true(expr) expect ((expr) != 0, 1)
115
116/*****************************************************************************/
117
118#include "config.h"
119
120#if HAVE_ST_XTIMENSEC
121# define ATIMENSEC PL_statcache.st_atimensec
122# define MTIMENSEC PL_statcache.st_mtimensec
123# define CTIMENSEC PL_statcache.st_ctimensec
124#elif HAVE_ST_XTIMESPEC
125# define ATIMENSEC PL_statcache.st_atim.tv_nsec
126# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
127# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
128#else
129# define ATIMENSEC 0
130# define MTIMENSEC 0
131# define CTIMENSEC 0
132#endif
133
134#include "schmorp.h"
135
136#if HAVE_EVENTFD
137# include <sys/eventfd.h>
138#endif
139
140#if HAVE_TIMERFD
141# include <sys/timerfd.h>
142#endif
143
144#if HAVE_RLIMITS
145 #include <sys/time.h>
146 #include <sys/resource.h>
147#endif
148
149typedef SV SV8; /* byte-sv, used for argument-checking */
150typedef int aio_rfd; /* read file desriptor */
151typedef int aio_wfd; /* write file descriptor */
152
153static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
154
155#define EIO_REQ_MEMBERS \
156 SV *callback; \
157 SV *sv1, *sv2; \
158 SV *sv3, *sv4; \
159 STRLEN stroffset; \
160 SV *self;
161
162#define EIO_NO_WRAPPERS 1
163
164#include "libeio/eio.h"
165
166static int req_invoke (eio_req *req);
167#define EIO_FINISH(req) req_invoke (req)
168static void req_destroy (eio_req *grp);
169#define EIO_DESTROY(req) req_destroy (req)
170
171#include "libeio/eio.c"
172
173#if !HAVE_POSIX_FADVISE
174# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
175#endif
176
177#if !HAVE_POSIX_MADVISE
178# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
179#endif
180
181#ifndef MAP_ANONYMOUS
182# ifdef MAP_ANON
183# define MAP_ANONYMOUS MAP_ANON
42# else 184# else
43# error sendfile support requested but not available 185# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44# endif 186# endif
45#endif 187#endif
46 188
47/* used for struct dirent, AIX doesn't provide it */ 189#ifndef makedev
48#ifndef NAME_MAX 190# define makedev(maj,min) (((maj) << 8) | (min))
49# define NAME_MAX 4096
50#endif 191#endif
51 192#ifndef major
52#if __ia64 193# define major(dev) ((dev) >> 8)
53# define STACKSIZE 65536
54#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55# define STACKSIZE PTHREAD_STACK_MIN
56#else
57# define STACKSIZE 16384
58#endif 194#endif
195#ifndef minor
196# define minor(dev) ((dev) & 0xff)
197#endif
59 198
60/* buffer size for various temporary buffers */ 199/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
61#define AIO_BUFSIZE 65536 200#ifdef __sun
201# undef PAGESIZE
202#endif
62 203
63#define dBUF \ 204#if PAGESIZE <= 0
64 char *aio_buf = malloc (AIO_BUFSIZE); \ 205# define PAGESIZE sysconf (_SC_PAGESIZE)
65 if (!aio_buf) \ 206#endif
207
208/*****************************************************************************/
209
210#if !_POSIX_MAPPED_FILES
211# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
212# define munmap(addr,length) EIO_ENOSYS ()
213#endif
214
215#if !_POSIX_MEMORY_PROTECTION
216# define mprotect(addr,len,prot) EIO_ENOSYS ()
217#endif
218
219#if !MREMAP_MAYMOVE
220# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
221#endif
222
223#define FOREIGN_MAGIC PERL_MAGIC_ext
224
225static int ecb_cold
226mmap_free (pTHX_ SV *sv, MAGIC *mg)
227{
228 int old_errno = errno;
229 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
230 errno = old_errno;
231
232 mg->mg_obj = 0; /* just in case */
233
234 SvREADONLY_off (sv);
235
236 if (SvPVX (sv) != mg->mg_ptr)
237 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
238
239 SvCUR_set (sv, 0);
240 SvPVX (sv) = 0;
241 SvOK_off (sv);
242
66 return -1; 243 return 0;
244}
67 245
68#define fBUF free (aio_buf) 246static MGVTBL mmap_vtbl = {
69 247 0, 0, 0, 0, mmap_free
70enum {
71 REQ_QUIT,
72 REQ_OPEN, REQ_CLOSE,
73 REQ_READ, REQ_WRITE, REQ_READAHEAD,
74 REQ_SENDFILE,
75 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
76 REQ_FSYNC, REQ_FDATASYNC,
77 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
78 REQ_READDIR,
79 REQ_LINK, REQ_SYMLINK,
80 REQ_GROUP, REQ_NOP,
81 REQ_BUSY,
82}; 248};
83 249
84#define AIO_REQ_KLASS "IO::AIO::REQ" 250static int ecb_cold
85#define AIO_GRP_KLASS "IO::AIO::GRP" 251sysfree_free (pTHX_ SV *sv, MAGIC *mg)
86
87typedef struct aio_cb
88{ 252{
89 struct aio_cb *volatile next; 253 free (mg->mg_ptr);
254 mg->mg_obj = 0; /* just in case */
90 255
91 SV *data, *callback; 256 SvREADONLY_off (sv);
92 SV *fh, *fh2;
93 void *dataptr, *data2ptr;
94 Stat_t *statdata;
95 off_t offset;
96 size_t length;
97 ssize_t result;
98 257
99 STRLEN dataoffset; 258 if (SvPVX (sv) != mg->mg_ptr)
100 int type; 259 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
101 int fd, fd2;
102 int errorno;
103 mode_t mode; /* open */
104 260
105 unsigned char flags; 261 SvCUR_set (sv, 0);
106 unsigned char pri; 262 SvPVX (sv) = 0;
263 SvOK_off (sv);
107 264
108 SV *self; /* the perl counterpart of this request, if any */ 265 return 0;
109 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 266}
110} aio_cb;
111 267
112enum { 268static MGVTBL sysfree_vtbl = {
113 FLAG_CANCELLED = 0x01, 269 0, 0, 0, 0, sysfree_free
114}; 270};
115 271
116typedef aio_cb *aio_req; 272/*****************************************************************************/
117typedef aio_cb *aio_req_ornot;
118 273
119enum { 274/* helper: set scalar to foreign ptr with custom free */
120 PRI_MIN = -4, 275static void
121 PRI_MAX = 4, 276sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
277{
278 sv_force_normal (sv);
122 279
123 DEFAULT_PRI = 0, 280 /* we store the length in mg_obj, as namlen is I32 :/ */
124 PRI_BIAS = -PRI_MIN, 281 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
125 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 282 ->mg_obj = (SV *)length;
126};
127 283
128static int next_pri = DEFAULT_PRI + PRI_BIAS; 284 SvUPGRADE (sv, SVt_PV); /* nop... */
129 285
130static int started, wanted; 286 if (SvLEN (sv))
131static volatile int nreqs; 287 Safefree (SvPVX (sv));
132static int max_outstanding = 1<<30;
133static int respipe [2];
134 288
135#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 289 SvPVX (sv) = (char *)addr;
136# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 290 SvCUR_set (sv, length);
137#else 291 SvLEN_set (sv, 0);
138# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 292 SvPOK_only (sv);
139#endif 293}
140 294
141static pthread_mutex_t reslock = AIO_MUTEX_INIT; 295static void
142static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 296sv_clear_foreign (SV *sv)
143static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 297{
298 /* todo: iterate over magic and only free ours, but of course */
299 /* the perl5porters will call that (correct) behaviour buggy */
300 sv_unmagic (sv, FOREIGN_MAGIC);
301}
144 302
145/* 303/*****************************************************************************/
146 * a somewhat faster data structure might be nice, but 304
147 * with 8 priorities this actually needs <20 insns 305/* defines all sorts of constants to 0 unless they are already defined */
148 * per shift, the most expensive operation. 306/* also provides const_iv_ and const_niv_ macros for them */
307#include "def0.h"
308
309/*****************************************************************************/
310
311static void
312fiemap (eio_req *req)
313{
314 req->result = -1;
315
316#if HAVE_FIEMAP
317 /* assume some c99 */
318 struct fiemap *fiemap = 0;
319 size_t end_offset;
320 int count = req->int3;
321
322 req->flags |= EIO_FLAG_PTR1_FREE;
323
324 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
325 /* increase in 3.5kb steps */
326 if (count < 0)
327 count = 8;
328
329 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
330 errno = ENOMEM;
331 if (!fiemap)
332 return;
333
334 req->ptr1 = fiemap;
335
336 fiemap->fm_start = req->offs;
337 fiemap->fm_length = req->size;
338 fiemap->fm_flags = req->int2;
339 fiemap->fm_extent_count = count;
340
341 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
342 return;
343
344 if (req->int3 >= 0 /* not autosizing */
345 || !fiemap->fm_mapped_extents /* no more extents */
346 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
347 goto done;
348
349 /* else we have to loop -
350 * it would be tempting (actually I tried that first) to just query the
351 * number of extents needed, but linux often feels like not returning all
352 * extents, without telling us it left any out. this complicates
353 * this quite a bit.
149 */ 354 */
150typedef struct {
151 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
152 int size;
153} reqq;
154 355
155static reqq req_queue; 356 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
156static reqq res_queue;
157 357
158int reqq_push (reqq *q, aio_req req) 358 for (;;)
159{
160 int pri = req->pri;
161 req->next = 0;
162
163 if (q->qe[pri])
164 { 359 {
165 q->qe[pri]->next = req; 360 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
166 q->qe[pri] = req; 361 char scratch[3072];
167 } 362 struct fiemap *incmap = (struct fiemap *)scratch;
168 else
169 q->qe[pri] = q->qs[pri] = req;
170 363
171 return q->size++; 364 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
172} 365 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
366 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
367 incmap->fm_flags = fiemap->fm_flags;
368 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
173 369
174aio_req reqq_shift (reqq *q) 370 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
175{
176 int pri;
177
178 if (!q->size)
179 return 0; 371 return;
180 372
181 --q->size; 373 if (!incmap->fm_mapped_extents)
374 goto done;
182 375
183 for (pri = NUM_PRI; pri--; ) 376 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
184 { 377 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
185 aio_req req = q->qs[pri]; 378 errno = ENOMEM;
186
187 if (req) 379 if (!fiemap)
380 return;
381
382 req->ptr1 = fiemap;
383
384 for (count = 0; count < incmap->fm_mapped_extents; ++count)
188 { 385 {
189 if (!(q->qs[pri] = req->next)) 386 struct fiemap_extent *e = incmap->fm_extents + count;
190 q->qe[pri] = 0;
191 387
192 return req; 388 if (e->fe_logical + e->fe_length >= end_offset)
389 goto done;
390
391 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
392
393 if (e->fe_flags & FIEMAP_EXTENT_LAST)
394 goto done;
395
193 } 396 }
194 } 397 }
195 398
196 abort (); 399done:
197} 400 req->result = 0;
198 401
402#else
403 errno = ENOSYS;
404#endif
405}
406
407/*****************************************************************************/
408
409enum {
410 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
411};
412
413typedef eio_req *aio_req;
414typedef eio_req *aio_req_ornot;
415typedef eio_wd aio_wd;
416
417static SV *on_next_submit;
418static int next_pri = EIO_PRI_DEFAULT;
419static int max_outstanding;
420
421static s_epipe respipe;
422
423static void req_destroy (aio_req req);
199static void req_invoke (aio_req req); 424static void req_cancel (aio_req req);
200static void req_free (aio_req req); 425
426static void
427want_poll (void)
428{
429 /* write a dummy byte to the pipe so fh becomes ready */
430 s_epipe_signal (&respipe);
431}
432
433static void
434done_poll (void)
435{
436 /* read any signals sent by the worker threads */
437 s_epipe_drain (&respipe);
438}
201 439
202/* must be called at most once */ 440/* must be called at most once */
203static SV *req_sv (aio_req req, const char *klass) 441static SV *
442req_sv (aio_req req, HV *stash)
204{ 443{
205 if (!req->self) 444 if (!req->self)
206 { 445 {
207 req->self = (SV *)newHV (); 446 req->self = (SV *)newHV ();
208 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 447 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
209 } 448 }
210 449
211 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 450 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
212} 451}
213 452
214static aio_req SvAIO_REQ (SV *sv) 453static SV *
454newSVaio_wd (aio_wd wd)
455{
456 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
457}
458
459static aio_req
460SvAIO_REQ (SV *sv)
215{ 461{
216 MAGIC *mg; 462 MAGIC *mg;
217 463
218 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 464 if (!SvROK (sv)
465 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
466 || (SvSTASH (SvRV (sv)) != aio_grp_stash
467 && SvSTASH (SvRV (sv)) != aio_req_stash
468 && !sv_derived_from (sv, "IO::AIO::REQ")))
219 croak ("object of class " AIO_REQ_KLASS " expected"); 469 croak ("object of class IO::AIO::REQ expected");
220 470
221 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 471 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
222 472
223 return mg ? (aio_req)mg->mg_ptr : 0; 473 return mg ? (aio_req)mg->mg_ptr : 0;
224} 474}
225 475
476static aio_wd
477SvAIO_WD (SV *sv)
478{
479 if (!SvROK (sv)
480 || SvTYPE (SvRV (sv)) != SVt_PVMG
481 || SvSTASH (SvRV (sv)) != aio_wd_stash)
482 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
483
484 return (aio_wd)(long)SvIVX (SvRV (sv));
485}
486
487static SV *
488newmortalFH (int fd, int flags)
489{
490 if (fd < 0)
491 return &PL_sv_undef;
492
493 GV *gv = (GV *)sv_newmortal ();
494 char sym[64];
495 int symlen;
496
497 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
498 gv_init (gv, aio_stash, sym, symlen, 0);
499
500 symlen = snprintf (
501 sym,
502 sizeof (sym),
503 "%s&=%d",
504 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
505 fd
506 );
507
508 return do_open (gv, sym, symlen, 0, 0, 0, 0)
509 ? (SV *)gv : &PL_sv_undef;
510}
511
512static void
226static void aio_grp_feed (aio_req grp) 513aio_grp_feed (aio_req grp)
227{ 514{
228 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 515 if (grp->sv2 && SvOK (grp->sv2))
229 { 516 {
230 int old_len = grp->length;
231
232 if (grp->fh2 && SvOK (grp->fh2))
233 {
234 dSP; 517 dSP;
235 518
236 ENTER; 519 ENTER;
237 SAVETMPS; 520 SAVETMPS;
238 PUSHMARK (SP); 521 PUSHMARK (SP);
239 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 522 XPUSHs (req_sv (grp, aio_grp_stash));
240 PUTBACK; 523 PUTBACK;
241 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 524 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242 SPAGAIN; 525 SPAGAIN;
243 FREETMPS; 526 FREETMPS;
244 LEAVE; 527 LEAVE;
245 }
246
247 /* stop if no progress has been made */
248 if (old_len == grp->length)
249 {
250 SvREFCNT_dec (grp->fh2);
251 grp->fh2 = 0;
252 break;
253 }
254 } 528 }
255} 529}
256 530
257static void aio_grp_dec (aio_req grp) 531static void
532req_submit (eio_req *req)
258{ 533{
259 --grp->length; 534 eio_submit (req);
260 535
261 /* call feeder, if applicable */ 536 if (expect_false (on_next_submit))
262 aio_grp_feed (grp);
263
264 /* finish, if done */
265 if (!grp->length && grp->fd)
266 { 537 {
267 req_invoke (grp); 538 dSP;
268 req_free (grp); 539 SV *cb = sv_2mortal (on_next_submit);
540
541 on_next_submit = 0;
542
543 PUSHMARK (SP);
544 PUTBACK;
545 call_sv (cb, G_DISCARD | G_EVAL);
269 } 546 }
270} 547}
271 548
272static void poll_wait () 549static int
550req_invoke (eio_req *req)
273{ 551{
274 fd_set rfd; 552 if (req->flags & FLAG_SV2_RO_OFF)
553 SvREADONLY_off (req->sv2);
275 554
276 while (nreqs) 555 if (!EIO_CANCELLED (req) && req->callback)
277 { 556 {
278 int size;
279#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280 pthread_mutex_lock (&reslock);
281#endif
282 size = res_queue.size;
283#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284 pthread_mutex_unlock (&reslock);
285#endif
286
287 if (size)
288 return;
289
290 FD_ZERO(&rfd);
291 FD_SET(respipe [0], &rfd);
292
293 select (respipe [0] + 1, &rfd, 0, 0, 0);
294 }
295}
296
297static void req_invoke (aio_req req)
298{
299 dSP; 557 dSP;
300 558 static SV *sv_result_cache; /* caches the result integer SV */
301 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 559 SV *sv_result;
302 {
303 errno = req->errorno;
304 560
305 ENTER; 561 ENTER;
306 SAVETMPS; 562 SAVETMPS;
307 PUSHMARK (SP); 563 PUSHMARK (SP);
308 EXTEND (SP, 1); 564 EXTEND (SP, 1);
309 565
566 /* do not recreate the result IV from scratch each time */
567 if (expect_true (sv_result_cache))
568 {
569 sv_result = sv_result_cache; sv_result_cache = 0;
570 SvIV_set (sv_result, req->result);
571 SvIOK_only (sv_result);
572 }
573 else
574 {
575 sv_result = newSViv (req->result);
576 SvREADONLY_on (sv_result);
577 }
578
310 switch (req->type) 579 switch (req->type)
311 { 580 {
581 case EIO_WD_OPEN:
582 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
583 break;
584
312 case REQ_READDIR: 585 case EIO_READDIR:
313 { 586 {
314 SV *rv = &PL_sv_undef; 587 SV *rv = &PL_sv_undef;
315 588
316 if (req->result >= 0) 589 if (req->result >= 0)
317 { 590 {
591 int i;
318 char *buf = req->data2ptr; 592 char *names = (char *)req->ptr2;
593 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
319 AV *av = newAV (); 594 AV *av = newAV ();
320 595
321 while (req->result) 596 av_extend (av, req->result - 1);
597
598 for (i = 0; i < req->result; ++i)
322 { 599 {
600 if (req->int1 & EIO_READDIR_DENTS)
601 {
602 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
603
604 if (req->int1 & EIO_READDIR_CUSTOM2)
605 {
606 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
607 AV *avent = newAV ();
608
609 av_extend (avent, 2);
610
611 if (!sv_type [ent->type])
612 {
613 sv_type [ent->type] = newSViv (ent->type);
614 SvREADONLY_on (sv_type [ent->type]);
615 }
616
617 av_store (avent, 0, namesv);
618 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
619 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
620
621 av_store (av, i, newRV_noinc ((SV *)avent));
622 }
623 else
624 av_store (av, i, namesv);
625
626 ++ent;
627 }
628 else
629 {
323 SV *sv = newSVpv (buf, 0); 630 SV *name = newSVpv (names, 0);
324
325 av_push (av, sv); 631 av_store (av, i, name);
326 buf += SvCUR (sv) + 1; 632 names += SvCUR (name) + 1;
327 req->result--; 633 }
328 } 634 }
329 635
330 rv = sv_2mortal (newRV_noinc ((SV *)av)); 636 rv = sv_2mortal (newRV_noinc ((SV *)av));
331 } 637 }
332 638
333 PUSHs (rv); 639 PUSHs (rv);
640
641 if (req->int1 & EIO_READDIR_CUSTOM1)
642 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
334 } 643 }
335 break; 644 break;
336 645
337 case REQ_OPEN: 646 case EIO_OPEN:
647 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
648 break;
649
650 case EIO_STATVFS:
651 case EIO_FSTATVFS:
338 { 652 {
339 /* convert fd to fh */ 653 SV *rv = &PL_sv_undef;
340 SV *fh; 654
655#ifndef _WIN32
656 if (req->result >= 0)
657 {
658 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
659 HV *hv = newHV ();
660 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
661 * chooses to make it a struct.
662 */
663 unsigned long fsid = 0;
664 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
341 665
342 PUSHs (sv_2mortal (newSViv (req->result))); 666 rv = sv_2mortal (newRV_noinc ((SV *)hv));
343 PUTBACK;
344 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345 SPAGAIN;
346 667
347 fh = SvREFCNT_inc (POPs); 668 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
669 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
670 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
671 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
672 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
673 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
674 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
675 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
676 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
677 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
678 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
679 }
680#endif
348 681
349 PUSHMARK (SP); 682 PUSHs (rv);
350 XPUSHs (sv_2mortal (fh));
351 } 683 }
684
352 break; 685 break;
353 686
354 case REQ_GROUP: 687 case EIO_GROUP:
355 req->fd = 2; /* mark group as finished */ 688 req->int1 = 2; /* mark group as finished */
356 689
357 if (req->data) 690 if (req->sv1)
358 { 691 {
359 int i; 692 int i;
360 AV *av = (AV *)req->data; 693 AV *av = (AV *)req->sv1;
361 694
362 EXTEND (SP, AvFILL (av) + 1); 695 EXTEND (SP, AvFILL (av) + 1);
363 for (i = 0; i <= AvFILL (av); ++i) 696 for (i = 0; i <= AvFILL (av); ++i)
364 PUSHs (*av_fetch (av, i, 0)); 697 PUSHs (*av_fetch (av, i, 0));
365 } 698 }
366 break; 699 break;
367 700
368 case REQ_NOP: 701 case EIO_NOP:
369 case REQ_BUSY: 702 case EIO_BUSY:
370 break; 703 break;
371 704
705 case EIO_READLINK:
706 case EIO_REALPATH:
707 if (req->result > 0)
708 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
709 break;
710
711 case EIO_STAT:
712 case EIO_LSTAT:
713 case EIO_FSTAT:
714 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
715
716 if (!(PL_laststatval = req->result))
717 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
718 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
719
720 PUSHs (sv_result);
721 break;
722
723 case EIO_SEEK:
724 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
725 break;
726
727 case EIO_READ:
728 {
729 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
730 *SvEND (req->sv2) = 0;
731 SvPOK_only (req->sv2);
732 SvSETMAGIC (req->sv2);
733 PUSHs (sv_result);
734 }
735 break;
736
737 case EIO_SLURP:
738 {
739 if (req->result >= 0)
740 {
741 /* if length was originally not known, we steal the malloc'ed memory */
742 if (req->flags & EIO_FLAG_PTR2_FREE)
743 {
744 req->flags &= ~EIO_FLAG_PTR2_FREE;
745 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
746 }
747 else
748 {
749 SvCUR_set (req->sv2, req->result);
750 *SvEND (req->sv2) = 0;
751 SvPOK_only (req->sv2);
752 }
753
754 SvSETMAGIC (req->sv2);
755 }
756
757 PUSHs (sv_result);
758 }
759 break;
760
761 case EIO_CUSTOM:
762 if (req->feed == fiemap)
763 {
764#if HAVE_FIEMAP
765 if (!req->result)
766 {
767 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
768
769 if (fiemap->fm_extent_count)
770 {
771 AV *av = newAV ();
772 int i;
773
774 while (fiemap->fm_mapped_extents)
775 {
776 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
777 AV *ext_av = newAV ();
778
779 av_store (ext_av, 3, newSVuv (extent->fe_flags));
780 av_store (ext_av, 2, newSVval64 (extent->fe_length));
781 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
782 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
783
784 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
785 }
786
787 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
788 }
789 else
790 {
791 SvIV_set (sv_result, fiemap->fm_mapped_extents);
792 PUSHs (sv_result);
793 }
794 }
795#endif
796 }
797 else
798 PUSHs (sv_result);
799 break;
800
801 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
802 if (req->result > 0)
803 SvIV_set (sv_result, 0);
804 /* FALLTHROUGH */
805
372 default: 806 default:
373 PUSHs (sv_2mortal (newSViv (req->result))); 807 PUSHs (sv_result);
374 break; 808 break;
375 } 809 }
376 810
811 errno = req->errorno;
377 812
378 PUTBACK; 813 PUTBACK;
379 call_sv (req->callback, G_VOID | G_EVAL); 814 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
380 SPAGAIN; 815 SPAGAIN;
816
817 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
818 SvREFCNT_dec (sv_result);
819 else
820 sv_result_cache = sv_result;
381 821
382 FREETMPS; 822 FREETMPS;
383 LEAVE; 823 LEAVE;
824
825 PUTBACK;
384 } 826 }
385 827
386 if (req->grp) 828 return !!SvTRUE (ERRSV);
387 {
388 aio_req grp = req->grp;
389
390 /* unlink request */
391 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
392 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
393
394 if (grp->grp_first == req)
395 grp->grp_first = req->grp_next;
396
397 aio_grp_dec (grp);
398 }
399
400 if (SvTRUE (ERRSV))
401 {
402 req_free (req);
403 croak (0);
404 }
405} 829}
406 830
407static void req_free (aio_req req) 831static void
832req_destroy (aio_req req)
408{ 833{
409 if (req->self) 834 if (req->self)
410 { 835 {
411 sv_unmagic (req->self, PERL_MAGIC_ext); 836 sv_unmagic (req->self, PERL_MAGIC_ext);
412 SvREFCNT_dec (req->self); 837 SvREFCNT_dec (req->self);
413 } 838 }
414 839
415 SvREFCNT_dec (req->data);
416 SvREFCNT_dec (req->fh); 840 SvREFCNT_dec (req->sv1);
417 SvREFCNT_dec (req->fh2); 841 SvREFCNT_dec (req->sv2);
842 SvREFCNT_dec (req->sv3);
843 SvREFCNT_dec (req->sv4);
418 SvREFCNT_dec (req->callback); 844 SvREFCNT_dec (req->callback);
419 Safefree (req->statdata);
420 845
421 if (req->type == REQ_READDIR && req->result >= 0)
422 free (req->data2ptr);
423
424 Safefree (req); 846 free (req);
425} 847}
426 848
427static void req_cancel (aio_req req) 849static void
850req_cancel_subs (aio_req grp)
428{ 851{
429 req->flags |= FLAG_CANCELLED;
430
431 if (req->type == REQ_GROUP) 852 if (grp->type != EIO_GROUP)
853 return;
854
855 SvREFCNT_dec (grp->sv2);
856 grp->sv2 = 0;
857
858 eio_grp_cancel (grp);
859}
860
861static void ecb_cold
862create_respipe (void)
863{
864 if (s_epipe_renew (&respipe))
865 croak ("IO::AIO: unable to initialize result pipe");
866}
867
868static void
869poll_wait (void)
870{
871 while (eio_nreqs ())
432 { 872 {
433 aio_req sub; 873 int size;
434 874
435 for (sub = req->grp_first; sub; sub = sub->grp_next) 875 X_LOCK (EIO_POOL->reslock);
436 req_cancel (sub); 876 size = EIO_POOL->res_queue.size;
877 X_UNLOCK (EIO_POOL->reslock);
878
879 if (size)
880 return;
881
882 etp_maybe_start_thread (EIO_POOL);
883
884 s_epipe_wait (&respipe);
437 } 885 }
438} 886}
439 887
440static int poll_cb () 888static int
889poll_cb (void)
441{ 890{
442 dSP;
443 int count = 0;
444 int do_croak = 0;
445 aio_req req;
446
447 for (;;) 891 for (;;)
448 { 892 {
449 pthread_mutex_lock (&reslock); 893 int res = eio_poll ();
450 req = reqq_shift (&res_queue);
451 894
452 if (req) 895 if (res > 0)
896 croak (0);
897
898 if (!max_outstanding || max_outstanding > eio_nreqs ())
899 return res;
900
901 poll_wait ();
902 }
903}
904
905static void ecb_cold
906reinit (void)
907{
908 create_respipe ();
909
910 if (eio_init (want_poll, done_poll) < 0)
911 croak ("IO::AIO: unable to initialise eio library");
912}
913
914/*****************************************************************************/
915
916static SV *
917get_cb (SV *cb_sv)
918{
919 SvGETMAGIC (cb_sv);
920 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
921}
922
923static aio_req ecb_noinline
924dreq (SV *callback)
925{
926 SV *cb_cv;
927 aio_req req;
928 int req_pri = next_pri;
929 next_pri = EIO_PRI_DEFAULT;
930
931 cb_cv = get_cb (callback);
932
933 req = calloc (sizeof (*req), 1);
934 if (!req)
935 croak ("out of memory during eio_req allocation");
936
937 req->callback = SvREFCNT_inc (cb_cv);
938 req->pri = req_pri;
939
940 return req;
941}
942
943#define dREQ \
944 aio_req req = dreq (callback); \
945
946#define REQ_SEND \
947 PUTBACK; \
948 req_submit (req); \
949 SPAGAIN; \
950 \
951 if (GIMME_V != G_VOID) \
952 XPUSHs (req_sv (req, aio_req_stash));
953
954ecb_inline void
955req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
956{
957 if (expect_false (SvROK (path)))
958 {
959 SV *rv = SvRV (path);
960 SV *wdob;
961
962 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
453 { 963 {
454 if (!res_queue.size) 964 path = AvARRAY (rv)[1];
965 wdob = AvARRAY (rv)[0];
966
967 if (SvOK (wdob))
455 { 968 {
456 /* read any signals sent by the worker threads */ 969 *wd = SvAIO_WD (wdob);
457 char buf [32]; 970 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
458 while (read (respipe [0], buf, 32) == 32)
459 ;
460 } 971 }
972 else
973 *wd = EIO_INVALID_WD;
461 } 974 }
462 975 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
463 pthread_mutex_unlock (&reslock);
464
465 if (!req)
466 break;
467
468 --nreqs;
469
470 if (req->type == REQ_QUIT)
471 started--;
472 else if (req->type == REQ_GROUP && req->length)
473 { 976 {
474 req->fd = 1; /* mark request as delayed */ 977 *wd = (aio_wd)(long)SvIVX (rv);
475 continue; 978 *wdsv = SvREFCNT_inc_NN (rv);
979 *ptr = ".";
980 return; /* path set to "." */
476 } 981 }
477 else 982 else
478 { 983 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
479 if (req->type == REQ_READ)
480 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483 SvREADONLY_off (req->data);
484
485 if (req->statdata)
486 {
487 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488 PL_laststatval = req->result;
489 PL_statcache = *(req->statdata);
490 }
491
492 req_invoke (req);
493
494 count++;
495 }
496
497 req_free (req);
498 } 984 }
499 985
500 return count; 986 *pathsv = newSVsv (path);
987 *ptr = SvPVbyte_nolen (*pathsv);
501} 988}
502 989
503static void *aio_proc(void *arg); 990static void ecb_noinline
504 991req_set_path1 (aio_req req, SV *path)
505static void start_thread (void)
506{ 992{
507 sigset_t fullsigset, oldsigset; 993 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
508 pthread_t tid;
509 pthread_attr_t attr;
510
511 pthread_attr_init (&attr);
512 pthread_attr_setstacksize (&attr, STACKSIZE);
513 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515 sigfillset (&fullsigset);
516 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519 started++;
520
521 sigprocmask (SIG_SETMASK, &oldsigset, 0);
522} 994}
523 995
524static void req_send (aio_req req) 996static void ecb_noinline
997req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
525{ 998{
526 while (started < wanted && nreqs >= started) 999 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
527 start_thread ();
528 1000
529 ++nreqs; 1001 switch (SvTYPE (rv))
530
531 pthread_mutex_lock (&reqlock);
532 reqq_push (&req_queue, req);
533 pthread_cond_signal (&reqwait);
534 pthread_mutex_unlock (&reqlock);
535
536 if (nreqs > max_outstanding)
537 for (;;)
538 {
539 poll_cb ();
540
541 if (nreqs <= max_outstanding)
542 break;
543
544 poll_wait ();
545 }
546}
547
548static void end_thread (void)
549{
550 aio_req req;
551
552 Newz (0, req, 1, aio_cb);
553
554 req->type = REQ_QUIT;
555 req->pri = PRI_MAX + PRI_BIAS;
556
557 req_send (req);
558}
559
560static void min_parallel (int nthreads)
561{
562 if (wanted < nthreads)
563 wanted = nthreads;
564}
565
566static void max_parallel (int nthreads)
567{
568 int cur = started;
569
570 if (wanted > nthreads)
571 wanted = nthreads;
572
573 while (cur > wanted)
574 { 1002 {
575 end_thread (); 1003 case SVt_PVIO:
576 cur--; 1004 case SVt_PVLV:
1005 case SVt_PVGV:
1006 req->type = type_fh;
1007 req->sv1 = newSVsv (fh_or_path);
1008 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1009 break;
1010
1011 default:
1012 req->type = type_path;
1013 req_set_path1 (req, fh_or_path);
1014 break;
577 } 1015 }
578
579 while (started > wanted)
580 {
581 poll_wait ();
582 poll_cb ();
583 }
584}
585
586static void create_pipe ()
587{
588 if (pipe (respipe))
589 croak ("unable to initialize result pipe");
590
591 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
592 croak ("cannot set result pipe to nonblocking mode");
593
594 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
595 croak ("cannot set result pipe to nonblocking mode");
596} 1016}
597 1017
598/*****************************************************************************/ 1018/*****************************************************************************/
599/* work around various missing functions */
600 1019
601#if !HAVE_PREADWRITE 1020static void
602# define pread aio_pread 1021ts_set (struct timespec *ts, NV value)
603# define pwrite aio_pwrite
604
605/*
606 * make our pread/pwrite safe against themselves, but not against
607 * normal read/write by using a mutex. slows down execution a lot,
608 * but that's your problem, not mine.
609 */
610static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
611
612static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613{ 1022{
614 ssize_t res; 1023 ts->tv_sec = value;
615 off_t ooffset; 1024 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
616
617 pthread_mutex_lock (&preadwritelock);
618 ooffset = lseek (fd, 0, SEEK_CUR);
619 lseek (fd, offset, SEEK_SET);
620 res = read (fd, buf, count);
621 lseek (fd, ooffset, SEEK_SET);
622 pthread_mutex_unlock (&preadwritelock);
623
624 return res;
625} 1025}
626 1026
627static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1027static NV
1028ts_get (const struct timespec *ts)
628{ 1029{
629 ssize_t res; 1030 return ts->tv_sec + ts->tv_nsec * 1e-9;
630 off_t ooffset;
631
632 pthread_mutex_lock (&preadwritelock);
633 ooffset = lseek (fd, 0, SEEK_CUR);
634 lseek (fd, offset, SEEK_SET);
635 res = write (fd, buf, count);
636 lseek (fd, offset, SEEK_SET);
637 pthread_mutex_unlock (&preadwritelock);
638
639 return res;
640} 1031}
641#endif
642 1032
643#if !HAVE_FDATASYNC 1033/*****************************************************************************/
644# define fdatasync fsync
645#endif
646 1034
647#if !HAVE_READAHEAD 1035XS(boot_IO__AIO) ecb_cold;
648# define readahead aio_readahead
649 1036
650static ssize_t readahead (int fd, off_t offset, size_t count) 1037MODULE = IO::AIO PACKAGE = IO::AIO
651{
652 dBUF;
653 1038
654 while (count > 0) 1039PROTOTYPES: ENABLE
655 {
656 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
657 1040
658 pread (fd, aio_buf, len, offset); 1041BOOT:
659 offset += len;
660 count -= len;
661 }
662
663 fBUF;
664
665 errno = 0;
666}
667#endif
668
669#if !HAVE_READDIR_R
670# define readdir_r aio_readdir_r
671
672static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
673
674static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675{ 1042{
676 struct dirent *e; 1043 static const struct {
677 int errorno; 1044 const char *name;
1045 IV iv;
1046 } *civ, const_iv[] = {
1047# define const_niv(name, value) { # name, (IV) value },
1048# define const_iv(name) { # name, (IV) name },
1049# define const_eio(name) { # name, (IV) EIO_ ## name },
678 1050
679 pthread_mutex_lock (&readdirlock); 1051 /* you have to re-run ./gendef0 after adding/removing any constants here */
1052 /* the first block can be undef if missing */
1053 const_iv (ENOSYS)
1054 const_iv (EXDEV)
1055 const_iv (EBADR)
680 1056
681 e = readdir (dirp); 1057 /* for lseek */
682 errorno = errno; 1058 const_iv (SEEK_DATA)
1059 const_iv (SEEK_HOLE)
683 1060
684 if (e) 1061 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
685 { 1062 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
686 *res = ent; 1063 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
687 strcpy (ent->d_name, e->d_name); 1064 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
688 } 1065 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
689 else 1066 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
690 *res = 0;
691 1067
692 pthread_mutex_unlock (&readdirlock); 1068 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1069 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1070 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1071 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1072 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
693 1073
694 errno = errorno; 1074 /* the second block will be 0 when missing */
695 return e ? 0 : -1; 1075 const_iv (O_ACCMODE)
696}
697#endif
698 1076
699/* sendfile always needs emulation */ 1077 const_iv (O_RDONLY)
700static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1078 const_iv (O_WRONLY)
701{ 1079 const_iv (O_RDWR)
702 ssize_t res; 1080 const_iv (O_CREAT)
1081 const_iv (O_TRUNC)
1082 const_iv (O_EXCL)
1083 const_iv (O_APPEND)
703 1084
704 if (!count) 1085 const_iv (O_ASYNC)
705 return 0; 1086 const_iv (O_DIRECT)
1087 const_iv (O_NOATIME)
706 1088
707#if HAVE_SENDFILE 1089 const_iv (O_CLOEXEC)
708# if __linux 1090 const_iv (O_NOCTTY)
709 res = sendfile (ofd, ifd, &offset, count); 1091 const_iv (O_NOFOLLOW)
1092 const_iv (O_NONBLOCK)
1093 const_iv (O_EXEC)
1094 const_iv (O_SEARCH)
1095 const_iv (O_DIRECTORY)
1096 const_iv (O_DSYNC)
1097 const_iv (O_RSYNC)
1098 const_iv (O_SYNC)
1099 const_iv (O_PATH)
1100 const_iv (O_TMPFILE)
1101 const_iv (O_TTY_INIT)
710 1102
711# elif __freebsd 1103 const_iv (S_IFIFO)
712 /* 1104 const_iv (S_IFCHR)
713 * Of course, the freebsd sendfile is a dire hack with no thoughts 1105 const_iv (S_IFBLK)
714 * wasted on making it similar to other I/O functions. 1106 const_iv (S_IFLNK)
715 */ 1107 const_iv (S_IFREG)
716 { 1108 const_iv (S_IFDIR)
717 off_t sbytes; 1109 const_iv (S_IFWHT)
718 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1110 const_iv (S_IFSOCK)
1111 const_iv (S_IFMT)
719 1112
720 if (res < 0 && sbytes) 1113 const_iv (ST_RDONLY)
721 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1114 const_iv (ST_NOSUID)
722 res = sbytes; 1115 const_iv (ST_NODEV)
1116 const_iv (ST_NOEXEC)
1117 const_iv (ST_SYNCHRONOUS)
1118 const_iv (ST_MANDLOCK)
1119 const_iv (ST_WRITE)
1120 const_iv (ST_APPEND)
1121 const_iv (ST_IMMUTABLE)
1122 const_iv (ST_NOATIME)
1123 const_iv (ST_NODIRATIME)
1124 const_iv (ST_RELATIME)
1125
1126 const_iv (PROT_NONE)
1127 const_iv (PROT_EXEC)
1128 const_iv (PROT_READ)
1129 const_iv (PROT_WRITE)
1130
1131 const_iv (MAP_PRIVATE)
1132 const_iv (MAP_SHARED)
1133 const_iv (MAP_FIXED)
1134 const_iv (MAP_ANONYMOUS)
1135
1136 /* linuxish */
1137 const_iv (MAP_LOCKED)
1138 const_iv (MAP_NORESERVE)
1139 const_iv (MAP_POPULATE)
1140 const_iv (MAP_NONBLOCK)
1141 const_iv (MAP_GROWSDOWN)
1142 const_iv (MAP_32BIT)
1143 const_iv (MAP_HUGETLB)
1144 const_iv (MAP_STACK)
1145
1146 const_iv (MREMAP_MAYMOVE)
1147 const_iv (MREMAP_FIXED)
1148
1149 const_iv (F_DUPFD_CLOEXEC)
1150
1151 const_iv (MSG_CMSG_CLOEXEC)
1152 const_iv (SOCK_CLOEXEC)
1153
1154 const_iv (F_OFD_GETLK)
1155 const_iv (F_OFD_SETLK)
1156 const_iv (F_OFD_GETLKW)
1157
1158 const_iv (FIFREEZE)
1159 const_iv (FITHAW)
1160 const_iv (FITRIM)
1161 const_iv (FICLONE)
1162 const_iv (FICLONERANGE)
1163 const_iv (FIDEDUPERANGE)
1164
1165 const_iv (FS_IOC_GETFLAGS)
1166 const_iv (FS_IOC_SETFLAGS)
1167 const_iv (FS_IOC_GETVERSION)
1168 const_iv (FS_IOC_SETVERSION)
1169 const_iv (FS_IOC_FIEMAP)
1170 const_iv (FS_IOC_FSGETXATTR)
1171 const_iv (FS_IOC_FSSETXATTR)
1172 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1173 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1174 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1175
1176 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1177
1178 const_iv (FS_SECRM_FL)
1179 const_iv (FS_UNRM_FL)
1180 const_iv (FS_COMPR_FL)
1181 const_iv (FS_SYNC_FL)
1182 const_iv (FS_IMMUTABLE_FL)
1183 const_iv (FS_APPEND_FL)
1184 const_iv (FS_NODUMP_FL)
1185 const_iv (FS_NOATIME_FL)
1186 const_iv (FS_DIRTY_FL)
1187 const_iv (FS_COMPRBLK_FL)
1188 const_iv (FS_NOCOMP_FL)
1189 const_iv (FS_ENCRYPT_FL)
1190 const_iv (FS_BTREE_FL)
1191 const_iv (FS_INDEX_FL)
1192 const_iv (FS_JOURNAL_DATA_FL)
1193 const_iv (FS_NOTAIL_FL)
1194 const_iv (FS_DIRSYNC_FL)
1195 const_iv (FS_TOPDIR_FL)
1196 const_iv (FS_FL_USER_MODIFIABLE)
1197
1198 const_iv (FS_XFLAG_REALTIME)
1199 const_iv (FS_XFLAG_PREALLOC)
1200 const_iv (FS_XFLAG_IMMUTABLE)
1201 const_iv (FS_XFLAG_APPEND)
1202 const_iv (FS_XFLAG_SYNC)
1203 const_iv (FS_XFLAG_NOATIME)
1204 const_iv (FS_XFLAG_NODUMP)
1205 const_iv (FS_XFLAG_RTINHERIT)
1206 const_iv (FS_XFLAG_PROJINHERIT)
1207 const_iv (FS_XFLAG_NOSYMLINKS)
1208 const_iv (FS_XFLAG_EXTSIZE)
1209 const_iv (FS_XFLAG_EXTSZINHERIT)
1210 const_iv (FS_XFLAG_NODEFRAG)
1211 const_iv (FS_XFLAG_FILESTREAM)
1212 const_iv (FS_XFLAG_DAX)
1213 const_iv (FS_XFLAG_HASATTR)
1214
1215 const_iv (FIEMAP_FLAG_SYNC)
1216 const_iv (FIEMAP_FLAG_XATTR)
1217 const_iv (FIEMAP_FLAGS_COMPAT)
1218 const_iv (FIEMAP_EXTENT_LAST)
1219 const_iv (FIEMAP_EXTENT_UNKNOWN)
1220 const_iv (FIEMAP_EXTENT_DELALLOC)
1221 const_iv (FIEMAP_EXTENT_ENCODED)
1222 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1223 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1224 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1225 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1226 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1227 const_iv (FIEMAP_EXTENT_MERGED)
1228 const_iv (FIEMAP_EXTENT_SHARED)
1229
1230 const_iv (SPLICE_F_MOVE)
1231 const_iv (SPLICE_F_NONBLOCK)
1232 const_iv (SPLICE_F_MORE)
1233 const_iv (SPLICE_F_GIFT)
1234
1235 const_iv (EFD_CLOEXEC)
1236 const_iv (EFD_NONBLOCK)
1237 const_iv (EFD_SEMAPHORE)
1238
1239 const_iv (CLOCK_REALTIME)
1240 const_iv (CLOCK_MONOTONIC)
1241 const_iv (CLOCK_BOOTTIME)
1242 const_iv (CLOCK_REALTIME_ALARM)
1243 const_iv (CLOCK_BOOTTIME_ALARM)
1244
1245 const_iv (TFD_NONBLOCK)
1246 const_iv (TFD_CLOEXEC)
1247
1248 const_iv (TFD_TIMER_ABSTIME)
1249 const_iv (TFD_TIMER_CANCEL_ON_SET)
1250
1251 /* these are libeio constants, and are independent of gendef0 */
1252 const_eio (SEEK_SET)
1253 const_eio (SEEK_CUR)
1254 const_eio (SEEK_END)
1255
1256 const_eio (MCL_FUTURE)
1257 const_eio (MCL_CURRENT)
1258
1259 const_eio (MS_ASYNC)
1260 const_eio (MS_INVALIDATE)
1261 const_eio (MS_SYNC)
1262
1263 const_eio (MT_MODIFY)
1264
1265 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1266 const_eio (SYNC_FILE_RANGE_WRITE)
1267 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1268
1269 const_eio (FALLOC_FL_KEEP_SIZE)
1270 const_eio (FALLOC_FL_PUNCH_HOLE)
1271 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1272 const_eio (FALLOC_FL_ZERO_RANGE)
1273 const_eio (FALLOC_FL_INSERT_RANGE)
1274 const_eio (FALLOC_FL_UNSHARE_RANGE)
1275
1276 const_eio (RENAME_NOREPLACE)
1277 const_eio (RENAME_EXCHANGE)
1278 const_eio (RENAME_WHITEOUT)
1279
1280 const_eio (READDIR_DENTS)
1281 const_eio (READDIR_DIRS_FIRST)
1282 const_eio (READDIR_STAT_ORDER)
1283 const_eio (READDIR_FOUND_UNKNOWN)
1284
1285 const_eio (DT_UNKNOWN)
1286 const_eio (DT_FIFO)
1287 const_eio (DT_CHR)
1288 const_eio (DT_DIR)
1289 const_eio (DT_BLK)
1290 const_eio (DT_REG)
1291 const_eio (DT_LNK)
1292 const_eio (DT_SOCK)
1293 const_eio (DT_WHT)
723 } 1294 };
724 1295
725# elif __hpux 1296 aio_stash = gv_stashpv ("IO::AIO" , 1);
726 res = sendfile (ofd, ifd, offset, count, 0, 0); 1297 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1298 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1299 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
727 1300
728# elif __solaris 1301 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
729 { 1302 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
730 struct sendfilevec vec;
731 size_t sbytes;
732 1303
733 vec.sfv_fd = ifd; 1304 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
734 vec.sfv_flag = 0;
735 vec.sfv_off = offset;
736 vec.sfv_len = count;
737 1305
738 res = sendfilev (ofd, &vec, 1, &sbytes); 1306 reinit ();
1307}
739 1308
740 if (res < 0 && sbytes) 1309void
1310reinit ()
1311 PROTOTYPE:
1312
1313void
1314max_poll_reqs (unsigned int nreqs)
1315 PROTOTYPE: $
1316 CODE:
1317 eio_set_max_poll_reqs (nreqs);
1318
1319void
1320max_poll_time (double nseconds)
1321 PROTOTYPE: $
1322 CODE:
1323 eio_set_max_poll_time (nseconds);
1324
1325void
1326min_parallel (unsigned int nthreads)
1327 PROTOTYPE: $
1328 CODE:
1329 eio_set_min_parallel (nthreads);
1330
1331void
1332max_parallel (unsigned int nthreads)
1333 PROTOTYPE: $
1334 CODE:
1335 eio_set_max_parallel (nthreads);
1336
1337void
1338max_idle (unsigned int nthreads)
1339 PROTOTYPE: $
1340 CODE:
1341 eio_set_max_idle (nthreads);
1342
1343void
1344idle_timeout (unsigned int seconds)
1345 PROTOTYPE: $
1346 CODE:
1347 eio_set_idle_timeout (seconds);
1348
1349void
1350max_outstanding (unsigned int maxreqs)
1351 PROTOTYPE: $
1352 CODE:
1353 max_outstanding = maxreqs;
1354
1355void
1356aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1357 PPCODE:
1358{
1359 dREQ;
1360
1361 req->type = EIO_WD_OPEN;
1362 req_set_path1 (req, pathname);
1363
1364 REQ_SEND;
1365}
1366
1367void
1368aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1369 PPCODE:
1370{
1371 dREQ;
1372
1373 req->type = EIO_OPEN;
1374 req_set_path1 (req, pathname);
1375 req->int1 = flags;
1376 req->int2 = mode;
1377
1378 REQ_SEND;
1379}
1380
1381void
1382aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1383 ALIAS:
1384 aio_fsync = EIO_FSYNC
1385 aio_fdatasync = EIO_FDATASYNC
1386 aio_syncfs = EIO_SYNCFS
1387 PPCODE:
1388{
1389 int fd = s_fileno_croak (fh, 0);
1390 dREQ;
1391
1392 req->type = ix;
1393 req->sv1 = newSVsv (fh);
1394 req->int1 = fd;
1395
1396 REQ_SEND;
1397}
1398
1399void
1400aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1401 PPCODE:
1402{
1403 int fd = s_fileno_croak (fh, 0);
1404 dREQ;
1405
1406 req->type = EIO_SYNC_FILE_RANGE;
1407 req->sv1 = newSVsv (fh);
1408 req->int1 = fd;
1409 req->offs = offset;
741 res = sbytes; 1410 req->size = nbytes;
742 } 1411 req->int2 = flags;
743 1412
744# endif 1413 REQ_SEND;
1414}
1415
1416void
1417aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1418 PPCODE:
1419{
1420 int fd = s_fileno_croak (fh, 0);
1421 dREQ;
1422
1423 req->type = EIO_FALLOCATE;
1424 req->sv1 = newSVsv (fh);
1425 req->int1 = fd;
1426 req->int2 = mode;
1427 req->offs = offset;
1428 req->size = len;
1429
1430 REQ_SEND;
1431}
1432
1433void
1434aio_close (SV *fh, SV *callback = &PL_sv_undef)
1435 PPCODE:
1436{
1437 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1438 int fd = s_fileno_croak (fh, 0);
1439 dREQ;
1440
1441 if (expect_false (close_fd < 0))
1442 {
1443 int pipefd [2];
1444
1445 if (
1446#ifdef _WIN32
1447 _pipe (pipefd, 1, _O_BINARY) < 0
745#else 1448#else
746 res = -1; 1449 pipe (pipefd) < 0
747 errno = ENOSYS; 1450 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
748#endif 1451#endif
749 1452 || close (pipefd [1]) < 0
750 if (res < 0
751 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
752#if __solaris
753 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
754#endif
755 )
756 )
757 {
758 /* emulate sendfile. this is a major pain in the ass */
759 dBUF;
760
761 res = 0;
762
763 while (count)
764 {
765 ssize_t cnt;
766
767 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
768
769 if (cnt <= 0)
770 { 1453 )
771 if (cnt && !res) res = -1; 1454 abort (); /*D*/
772 break;
773 }
774 1455
775 cnt = write (ofd, aio_buf, cnt); 1456 close_fd = pipefd [0];
776
777 if (cnt <= 0)
778 {
779 if (cnt && !res) res = -1;
780 break;
781 }
782
783 offset += cnt;
784 res += cnt;
785 count -= cnt;
786 }
787
788 fBUF;
789 }
790
791 return res;
792}
793
794/* read a full directory */
795static int scandir_ (const char *path, void **namesp)
796{
797 DIR *dirp;
798 union
799 {
800 struct dirent d;
801 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
802 } *u;
803 struct dirent *entp;
804 char *name, *names;
805 int memlen = 4096;
806 int memofs = 0;
807 int res = 0;
808 int errorno;
809
810 dirp = opendir (path);
811 if (!dirp)
812 return -1;
813
814 u = malloc (sizeof (*u));
815 names = malloc (memlen);
816
817 if (u && names)
818 for (;;)
819 {
820 errno = 0;
821 readdir_r (dirp, &u->d, &entp);
822
823 if (!entp)
824 break;
825
826 name = entp->d_name;
827
828 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
829 {
830 int len = strlen (name) + 1;
831
832 res++;
833
834 while (memofs + len > memlen)
835 {
836 memlen *= 2;
837 names = realloc (names, memlen);
838 if (!names)
839 break;
840 }
841
842 memcpy (names + memofs, name, len);
843 memofs += len;
844 } 1457 }
845 }
846 1458
847 errorno = errno; 1459 req->type = EIO_DUP2;
848 free (u); 1460 req->int1 = close_fd;
849 closedir (dirp); 1461 req->sv2 = newSVsv (fh);
1462 req->int2 = fd;
850 1463
851 if (errorno) 1464 REQ_SEND;
852 {
853 free (names);
854 errno = errorno;
855 res = -1;
856 }
857
858 *namesp = (void *)names;
859 return res;
860} 1465}
861 1466
862/*****************************************************************************/
863
864static void *aio_proc (void *thr_arg)
865{
866 aio_req req;
867 int type;
868
869 do
870 {
871 pthread_mutex_lock (&reqlock);
872
873 for (;;)
874 {
875 req = reqq_shift (&req_queue);
876
877 if (req)
878 break;
879
880 pthread_cond_wait (&reqwait, &reqlock);
881 }
882
883 pthread_mutex_unlock (&reqlock);
884
885 errno = 0; /* strictly unnecessary */
886 type = req->type; /* remember type for QUIT check */
887
888 if (!(req->flags & FLAG_CANCELLED))
889 switch (type)
890 {
891 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
892 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
893
894 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
895 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
896
897 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
898 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
899 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
900
901 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
902 case REQ_CLOSE: req->result = close (req->fd); break;
903 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
904 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
905 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
906 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
907 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
908
909 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
910 case REQ_FSYNC: req->result = fsync (req->fd); break;
911 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
912
913 case REQ_BUSY:
914 {
915 struct timeval tv;
916
917 tv.tv_sec = req->fd;
918 tv.tv_usec = req->fd2;
919
920 req->result = select (0, 0, 0, 0, &tv);
921 }
922
923 case REQ_GROUP:
924 case REQ_NOP:
925 case REQ_QUIT:
926 break;
927
928 default:
929 req->result = ENOSYS;
930 break;
931 }
932
933 req->errorno = errno;
934
935 pthread_mutex_lock (&reslock);
936
937 if (!reqq_push (&res_queue, req))
938 /* write a dummy byte to the pipe so fh becomes ready */
939 write (respipe [1], &respipe, 1);
940
941 pthread_mutex_unlock (&reslock);
942 }
943 while (type != REQ_QUIT);
944
945 return 0;
946}
947
948/*****************************************************************************/
949
950static void atfork_prepare (void)
951{
952 pthread_mutex_lock (&reqlock);
953 pthread_mutex_lock (&reslock);
954#if !HAVE_PREADWRITE
955 pthread_mutex_lock (&preadwritelock);
956#endif
957#if !HAVE_READDIR_R
958 pthread_mutex_lock (&readdirlock);
959#endif
960}
961
962static void atfork_parent (void)
963{
964#if !HAVE_READDIR_R
965 pthread_mutex_unlock (&readdirlock);
966#endif
967#if !HAVE_PREADWRITE
968 pthread_mutex_unlock (&preadwritelock);
969#endif
970 pthread_mutex_unlock (&reslock);
971 pthread_mutex_unlock (&reqlock);
972}
973
974static void atfork_child (void)
975{
976 aio_req prv;
977
978 started = 0;
979
980 while (prv = reqq_shift (&req_queue))
981 req_free (prv);
982
983 while (prv = reqq_shift (&res_queue))
984 req_free (prv);
985
986 close (respipe [0]);
987 close (respipe [1]);
988 create_pipe ();
989
990 atfork_parent ();
991}
992
993#define dREQ \
994 aio_req req; \
995 int req_pri = next_pri; \
996 next_pri = DEFAULT_PRI + PRI_BIAS; \
997 \
998 if (SvOK (callback) && !SvROK (callback)) \
999 croak ("callback must be undef or of reference type"); \
1000 \
1001 Newz (0, req, 1, aio_cb); \
1002 if (!req) \
1003 croak ("out of memory during aio_req allocation"); \
1004 \
1005 req->callback = newSVsv (callback); \
1006 req->pri = req_pri
1007
1008#define REQ_SEND \
1009 req_send (req); \
1010 \
1011 if (GIMME_V != G_VOID) \
1012 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1013
1014MODULE = IO::AIO PACKAGE = IO::AIO
1015
1016PROTOTYPES: ENABLE
1017
1018BOOT:
1019{
1020 HV *stash = gv_stashpv ("IO::AIO", 1);
1021 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1024
1025 create_pipe ();
1026 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1027}
1028
1029void 1467void
1030min_parallel (nthreads) 1468aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1031 int nthreads
1032 PROTOTYPE: $
1033
1034void
1035max_parallel (nthreads)
1036 int nthreads
1037 PROTOTYPE: $
1038
1039int
1040max_outstanding (nreqs)
1041 int nreqs
1042 PROTOTYPE: $
1043 CODE: 1469 PPCODE:
1044 RETVAL = max_outstanding;
1045 max_outstanding = nreqs;
1046
1047void
1048aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1049 SV * pathname
1050 int flags
1051 int mode
1052 SV * callback
1053 PROTOTYPE: $$$;$
1054 PPCODE:
1055{ 1470{
1471 int fd = s_fileno_croak (fh, 0);
1056 dREQ; 1472 dREQ;
1057 1473
1058 req->type = REQ_OPEN; 1474 req->type = EIO_SEEK;
1059 req->data = newSVsv (pathname); 1475 req->sv1 = newSVsv (fh);
1060 req->dataptr = SvPVbyte_nolen (req->data); 1476 req->int1 = fd;
1061 req->fd = flags; 1477 req->offs = SvVAL64 (offset);
1062 req->mode = mode; 1478 req->int2 = whence;
1063 1479
1064 REQ_SEND; 1480 REQ_SEND;
1065} 1481}
1066 1482
1067void 1483void
1068aio_close (fh,callback=&PL_sv_undef) 1484aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1069 SV * fh
1070 SV * callback
1071 PROTOTYPE: $;$
1072 ALIAS: 1485 ALIAS:
1073 aio_close = REQ_CLOSE
1074 aio_fsync = REQ_FSYNC
1075 aio_fdatasync = REQ_FDATASYNC
1076 PPCODE:
1077{
1078 dREQ;
1079
1080 req->type = ix;
1081 req->fh = newSVsv (fh);
1082 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083
1084 REQ_SEND (req);
1085}
1086
1087void
1088aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1089 SV * fh
1090 UV offset
1091 UV length
1092 SV * data
1093 UV dataoffset
1094 SV * callback
1095 ALIAS:
1096 aio_read = REQ_READ 1486 aio_read = EIO_READ
1097 aio_write = REQ_WRITE 1487 aio_write = EIO_WRITE
1098 PROTOTYPE: $$$$$;$
1099 PPCODE: 1488 PPCODE:
1100{ 1489{
1101 aio_req req;
1102 STRLEN svlen; 1490 STRLEN svlen;
1491 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1103 char *svptr = SvPVbyte (data, svlen); 1492 char *svptr = SvPVbyte (data, svlen);
1104 1493 UV len = SvUV (length);
1105 SvUPGRADE (data, SVt_PV);
1106 SvPOK_on (data);
1107 1494
1108 if (dataoffset < 0) 1495 if (dataoffset < 0)
1109 dataoffset += svlen; 1496 dataoffset += svlen;
1110 1497
1111 if (dataoffset < 0 || dataoffset > svlen) 1498 if (dataoffset < 0 || dataoffset > svlen)
1112 croak ("data offset outside of string"); 1499 croak ("dataoffset outside of data scalar");
1113 1500
1114 if (ix == REQ_WRITE) 1501 if (ix == EIO_WRITE)
1115 { 1502 {
1116 /* write: check length and adjust. */ 1503 /* write: check length and adjust. */
1117 if (length < 0 || length + dataoffset > svlen) 1504 if (!SvOK (length) || len + dataoffset > svlen)
1118 length = svlen - dataoffset; 1505 len = svlen - dataoffset;
1119 } 1506 }
1120 else 1507 else
1121 { 1508 {
1122 /* read: grow scalar as necessary */ 1509 /* read: check type and grow scalar as necessary */
1510 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1123 svptr = SvGROW (data, length + dataoffset); 1511 svptr = sv_grow (data, len + dataoffset + 1);
1512 else if (SvCUR (data) < len + dataoffset)
1513 croak ("length + dataoffset outside of scalar, and cannot grow");
1124 } 1514 }
1125
1126 if (length < 0)
1127 croak ("length must not be negative");
1128 1515
1129 { 1516 {
1130 dREQ; 1517 dREQ;
1131 1518
1132 req->type = ix; 1519 req->type = ix;
1133 req->fh = newSVsv (fh); 1520 req->sv1 = newSVsv (fh);
1134 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1521 req->int1 = fd;
1135 : IoOFP (sv_2io (fh))); 1522 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136 req->offset = offset; 1523 req->size = len;
1137 req->length = length;
1138 req->data = SvREFCNT_inc (data); 1524 req->sv2 = SvREFCNT_inc (data);
1139 req->dataptr = (char *)svptr + dataoffset; 1525 req->ptr2 = (char *)svptr + dataoffset;
1526 req->stroffset = dataoffset;
1140 1527
1141 if (!SvREADONLY (data)) 1528 if (!SvREADONLY (data))
1142 { 1529 {
1143 SvREADONLY_on (data); 1530 SvREADONLY_on (data);
1144 req->data2ptr = (void *)data; 1531 req->flags |= FLAG_SV2_RO_OFF;
1145 } 1532 }
1146 1533
1147 REQ_SEND; 1534 REQ_SEND;
1148 } 1535 }
1149} 1536}
1150 1537
1151void 1538void
1152aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1539aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1153 SV * out_fh 1540 ALIAS:
1154 SV * in_fh 1541 aio_ioctl = EIO_IOCTL
1155 UV in_offset 1542 aio_fcntl = EIO_FCNTL
1156 UV length
1157 SV * callback
1158 PROTOTYPE: $$$$;$
1159 PPCODE: 1543 PPCODE:
1160{ 1544{
1161 dREQ; 1545 int fd = s_fileno_croak (fh, 0);
1546 char *svptr;
1162 1547
1163 req->type = REQ_SENDFILE; 1548 if (SvPOK (arg) || !SvNIOK (arg))
1164 req->fh = newSVsv (out_fh);
1165 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166 req->fh2 = newSVsv (in_fh);
1167 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168 req->offset = in_offset;
1169 req->length = length;
1170
1171 REQ_SEND;
1172}
1173
1174void
1175aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1176 SV * fh
1177 UV offset
1178 IV length
1179 SV * callback
1180 PROTOTYPE: $$$;$
1181 PPCODE:
1182{
1183 dREQ;
1184
1185 req->type = REQ_READAHEAD;
1186 req->fh = newSVsv (fh);
1187 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1188 req->offset = offset;
1189 req->length = length;
1190
1191 REQ_SEND;
1192}
1193
1194void
1195aio_stat (fh_or_path,callback=&PL_sv_undef)
1196 SV * fh_or_path
1197 SV * callback
1198 ALIAS:
1199 aio_stat = REQ_STAT
1200 aio_lstat = REQ_LSTAT
1201 PPCODE:
1202{
1203 dREQ;
1204
1205 New (0, req->statdata, 1, Stat_t);
1206 if (!req->statdata)
1207 { 1549 {
1208 req_free (req); 1550 STRLEN svlen;
1209 croak ("out of memory during aio_req->statdata allocation"); 1551 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1210 } 1552#ifdef IOCPARM_LEN
1553 STRLEN need = IOCPARM_LEN (request);
1554#else
1555 STRLEN need = 256;
1556#endif
1211 1557
1212 if (SvPOK (fh_or_path)) 1558 if (svlen < need)
1213 { 1559 svptr = SvGROW (arg, need);
1214 req->type = ix;
1215 req->data = newSVsv (fh_or_path);
1216 req->dataptr = SvPVbyte_nolen (req->data);
1217 } 1560 }
1218 else 1561 else
1562 svptr = (char *)SvIV (arg);
1563
1219 { 1564 {
1565 dREQ;
1566
1220 req->type = REQ_FSTAT; 1567 req->type = ix;
1221 req->fh = newSVsv (fh_or_path); 1568 req->sv1 = newSVsv (fh);
1222 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1569 req->int1 = fd;
1570 req->int2 = (long)request;
1571 req->sv2 = SvREFCNT_inc (arg);
1572 req->ptr2 = svptr;
1573
1574 REQ_SEND;
1223 } 1575 }
1576}
1577
1578void
1579aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1580 ALIAS:
1581 aio_readlink = EIO_READLINK
1582 aio_realpath = EIO_REALPATH
1583 PPCODE:
1584{
1585 dREQ;
1586
1587 req->type = ix;
1588 req_set_path1 (req, pathname);
1224 1589
1225 REQ_SEND; 1590 REQ_SEND;
1226} 1591}
1227 1592
1228void 1593void
1229aio_unlink (pathname,callback=&PL_sv_undef) 1594aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1230 SV * pathname 1595 PPCODE:
1231 SV * callback 1596{
1597 int ifd = s_fileno_croak (in_fh , 0);
1598 int ofd = s_fileno_croak (out_fh, 1);
1599 dREQ;
1600
1601 req->type = EIO_SENDFILE;
1602 req->sv1 = newSVsv (out_fh);
1603 req->int1 = ofd;
1604 req->sv2 = newSVsv (in_fh);
1605 req->int2 = ifd;
1606 req->offs = in_offset;
1607 req->size = length;
1608
1609 REQ_SEND;
1610}
1611
1612void
1613aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1614 PPCODE:
1615{
1616 int fd = s_fileno_croak (fh, 0);
1617 dREQ;
1618
1619 req->type = EIO_READAHEAD;
1620 req->sv1 = newSVsv (fh);
1621 req->int1 = fd;
1622 req->offs = offset;
1623 req->size = length;
1624
1625 REQ_SEND;
1626}
1627
1628void
1629aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1232 ALIAS: 1630 ALIAS:
1631 aio_stat = EIO_STAT
1632 aio_lstat = EIO_LSTAT
1633 aio_statvfs = EIO_STATVFS
1634 PPCODE:
1635{
1636 dREQ;
1637
1638 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1639
1640 REQ_SEND;
1641}
1642
1643void
1644st_xtime ()
1645 ALIAS:
1646 st_atime = 1
1647 st_mtime = 2
1648 st_ctime = 4
1649 st_xtime = 7
1650 PPCODE:
1651 EXTEND (SP, 3);
1652 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1653 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1654 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1655
1656void
1657st_xtimensec ()
1658 ALIAS:
1659 st_atimensec = 1
1660 st_mtimensec = 2
1661 st_ctimensec = 4
1662 st_xtimensec = 7
1663 PPCODE:
1664 EXTEND (SP, 3);
1665 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1666 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1667 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1668
1669UV
1670major (UV dev)
1671 ALIAS:
1672 minor = 1
1673 CODE:
1674 RETVAL = ix ? minor (dev) : major (dev);
1675 OUTPUT:
1676 RETVAL
1677
1678UV
1679makedev (UV maj, UV min)
1680 CODE:
1681 RETVAL = makedev (maj, min);
1682 OUTPUT:
1683 RETVAL
1684
1685void
1686aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1687 PPCODE:
1688{
1689 dREQ;
1690
1691 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1692 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1693 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1694
1695 REQ_SEND;
1696}
1697
1698void
1699aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1700 PPCODE:
1701{
1702 dREQ;
1703
1704 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1705 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1706
1707 REQ_SEND;
1708}
1709
1710void
1711aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1712 PPCODE:
1713{
1714 dREQ;
1715
1716 req->int2 = mode;
1717 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1718
1719 REQ_SEND;
1720}
1721
1722void
1723aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1724 PPCODE:
1725{
1726 dREQ;
1727
1728 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1729 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1730 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1731
1732 REQ_SEND;
1733}
1734
1735void
1736aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1737 PPCODE:
1738{
1739 dREQ;
1740
1741 req->type = EIO_READDIR;
1742 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1743
1744 if (flags & EIO_READDIR_DENTS)
1745 req->int1 |= EIO_READDIR_CUSTOM2;
1746
1747 req_set_path1 (req, pathname);
1748
1749 REQ_SEND;
1750}
1751
1752void
1753aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1754 PPCODE:
1755{
1756 dREQ;
1757
1758 req->type = EIO_MKDIR;
1759 req->int2 = mode;
1760 req_set_path1 (req, pathname);
1761
1762 REQ_SEND;
1763}
1764
1765void
1766aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1767 ALIAS:
1233 aio_unlink = REQ_UNLINK 1768 aio_unlink = EIO_UNLINK
1234 aio_rmdir = REQ_RMDIR 1769 aio_rmdir = EIO_RMDIR
1235 aio_readdir = REQ_READDIR 1770 aio_readdir = EIO_READDIR
1236 PPCODE: 1771 PPCODE:
1237{ 1772{
1238 dREQ; 1773 dREQ;
1239 1774
1240 req->type = ix; 1775 req->type = ix;
1241 req->data = newSVsv (pathname); 1776 req_set_path1 (req, pathname);
1242 req->dataptr = SvPVbyte_nolen (req->data); 1777
1243
1244 REQ_SEND; 1778 REQ_SEND;
1245} 1779}
1246 1780
1247void 1781void
1248aio_link (oldpath,newpath,callback=&PL_sv_undef) 1782aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1249 SV * oldpath
1250 SV * newpath
1251 SV * callback
1252 ALIAS: 1783 ALIAS:
1253 aio_link = REQ_LINK 1784 aio_link = EIO_LINK
1254 aio_symlink = REQ_SYMLINK 1785 aio_symlink = EIO_SYMLINK
1255 aio_rename = REQ_RENAME 1786 aio_rename = EIO_RENAME
1256 PPCODE: 1787 PPCODE:
1257{ 1788{
1789 eio_wd wd2 = 0;
1258 dREQ; 1790 dREQ;
1259 1791
1260 req->type = ix; 1792 req->type = ix;
1261 req->fh = newSVsv (oldpath); 1793 req_set_path1 (req, oldpath);
1262 req->data2ptr = SvPVbyte_nolen (req->fh); 1794 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1263 req->data = newSVsv (newpath); 1795 req->int3 = (long)wd2;
1264 req->dataptr = SvPVbyte_nolen (req->data);
1265 1796
1266 REQ_SEND; 1797 REQ_SEND;
1267} 1798}
1268 1799
1269void 1800void
1270aio_busy (delay,callback=&PL_sv_undef) 1801aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1271 double delay
1272 SV * callback
1273 PPCODE: 1802 PPCODE:
1274{ 1803{
1804 eio_wd wd2 = 0;
1275 dREQ; 1805 dREQ;
1276 1806
1277 req->type = REQ_BUSY; 1807 req->type = EIO_RENAME;
1278 req->fd = delay < 0. ? 0 : delay; 1808 req_set_path1 (req, oldpath);
1279 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1809 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1280 1810 req->int2 = flags;
1811 req->int3 = (long)wd2;
1812
1281 REQ_SEND; 1813 REQ_SEND;
1282} 1814}
1283 1815
1284void 1816void
1285aio_group (callback=&PL_sv_undef) 1817aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1286 SV * callback 1818 PPCODE:
1287 PROTOTYPE: ;$ 1819{
1820 dREQ;
1821
1822 req->type = EIO_MKNOD;
1823 req->int2 = (mode_t)mode;
1824 req->offs = dev;
1825 req_set_path1 (req, pathname);
1826
1827 REQ_SEND;
1828}
1829
1830void
1831aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1832 ALIAS:
1833 aio_mtouch = EIO_MTOUCH
1834 aio_msync = EIO_MSYNC
1288 PPCODE: 1835 PPCODE:
1289{ 1836{
1837 STRLEN svlen;
1838 char *svptr = SvPVbyte (data, svlen);
1839 UV len = SvUV (length);
1840
1841 if (flags < 0)
1842 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1843
1844 if (offset < 0)
1845 offset += svlen;
1846
1847 if (offset < 0 || offset > svlen)
1848 croak ("offset outside of scalar");
1849
1850 if (!SvOK (length) || len + offset > svlen)
1851 len = svlen - offset;
1852
1853 {
1854 dREQ;
1855
1856 req->type = ix;
1857 req->sv2 = SvREFCNT_inc (data);
1858 req->ptr2 = (char *)svptr + offset;
1859 req->size = len;
1860 req->int1 = flags;
1861
1862 REQ_SEND;
1863 }
1864}
1865
1866void
1867aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1868 PPCODE:
1869{
1870 STRLEN svlen;
1871 char *svptr = SvPVbyte (data, svlen);
1872 UV len = SvUV (length);
1873
1874 if (offset < 0)
1875 offset += svlen;
1876
1877 if (offset < 0 || offset > svlen)
1878 croak ("offset outside of scalar");
1879
1880 if (!SvOK (length) || len + offset > svlen)
1881 len = svlen - offset;
1882
1883 {
1884 dREQ;
1885
1886 req->type = EIO_MLOCK;
1887 req->sv2 = SvREFCNT_inc (data);
1888 req->ptr2 = (char *)svptr + offset;
1889 req->size = len;
1890
1891 REQ_SEND;
1892 }
1893}
1894
1895void
1896aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1897 PPCODE:
1898{
1899 dREQ;
1900
1901 req->type = EIO_MLOCKALL;
1902 req->int1 = flags;
1903
1904 REQ_SEND;
1905}
1906
1907void
1908aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1909 PPCODE:
1910{
1911 int fd = s_fileno_croak (fh, 0);
1290 dREQ; 1912 dREQ;
1291 1913
1292 req->type = REQ_GROUP; 1914 req->type = EIO_CUSTOM;
1293 req_send (req); 1915 req->sv1 = newSVsv (fh);
1916 req->int1 = fd;
1294 1917
1295 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1918 req->feed = fiemap;
1296} 1919#if HAVE_FIEMAP
1920 /* keep our fingers crossed that the next two types are 64 bit */
1921 req->offs = start;
1922 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1923 req->int2 = flags;
1924 req->int3 = SvOK (count) ? SvIV (count) : -1;
1925#endif
1297 1926
1927 REQ_SEND;
1928}
1929
1298void 1930void
1299aio_nop (callback=&PL_sv_undef) 1931aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1300 SV * callback 1932 PPCODE:
1933{
1934 char *svptr = 0;
1935
1936 sv_clear_foreign (data);
1937
1938 if (length) /* known length, directly read into scalar */
1939 {
1940 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1941 svptr = sv_grow (data, length + 1);
1942 else if (SvCUR (data) < length)
1943 croak ("length outside of scalar, and cannot grow");
1944 else
1945 svptr = SvPVbyte_nolen (data);
1946 }
1947
1948 {
1949 dREQ;
1950
1951 req->type = EIO_SLURP;
1952 req_set_path1 (req, pathname);
1953 req->offs = offset;
1954 req->size = length;
1955 req->sv2 = SvREFCNT_inc (data);
1956 req->ptr2 = svptr;
1957
1958 if (!SvREADONLY (data))
1959 {
1960 SvREADONLY_on (data);
1961 req->flags |= FLAG_SV2_RO_OFF;
1962 }
1963
1964 REQ_SEND;
1965 }
1966}
1967
1968void
1969aio_busy (double delay, SV *callback = &PL_sv_undef)
1301 PPCODE: 1970 PPCODE:
1302{ 1971{
1303 dREQ; 1972 dREQ;
1304 1973
1305 req->type = REQ_NOP; 1974 req->type = EIO_BUSY;
1975 req->nv1 = delay < 0. ? 0. : delay;
1306 1976
1307 REQ_SEND; 1977 REQ_SEND;
1308} 1978}
1309 1979
1310void 1980void
1311aioreq_pri (int pri = DEFAULT_PRI) 1981aio_group (SV *callback = &PL_sv_undef)
1312 CODE: 1982 PPCODE:
1983{
1984 dREQ;
1985
1986 req->type = EIO_GROUP;
1987
1988 PUTBACK;
1989 req_submit (req);
1990 SPAGAIN;
1991
1992 XPUSHs (req_sv (req, aio_grp_stash));
1993}
1994
1995void
1996aio_nop (SV *callback = &PL_sv_undef)
1997 ALIAS:
1998 aio_nop = EIO_NOP
1999 aio_sync = EIO_SYNC
2000 PPCODE:
2001{
2002 dREQ;
2003
2004 req->type = ix;
2005
2006 REQ_SEND;
2007}
2008
2009int
2010aioreq_pri (int pri = NO_INIT)
2011 CODE:
2012 RETVAL = next_pri;
2013 if (items > 0)
2014 {
1313 if (pri < PRI_MIN) pri = PRI_MIN; 2015 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1314 if (pri > PRI_MAX) pri = PRI_MAX; 2016 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1315 next_pri = pri + PRI_BIAS; 2017 next_pri = pri;
2018 }
2019 OUTPUT:
2020 RETVAL
1316 2021
1317void 2022void
1318aioreq_nice (int nice = 0) 2023aioreq_nice (int nice = 0)
1319 CODE: 2024 CODE:
1320 nice = next_pri - nice; 2025 nice = next_pri - nice;
1321 if (nice < PRI_MIN) nice = PRI_MIN; 2026 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1322 if (nice > PRI_MAX) nice = PRI_MAX; 2027 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1323 next_pri = nice + PRI_BIAS; 2028 next_pri = nice;
1324 2029
1325void 2030void
1326flush () 2031flush ()
1327 PROTOTYPE:
1328 CODE: 2032 CODE:
1329 while (nreqs) 2033 while (eio_nreqs ())
1330 { 2034 {
1331 poll_wait (); 2035 poll_wait ();
1332 poll_cb (); 2036 poll_cb ();
1333 } 2037 }
1334 2038
1335void 2039int
1336poll() 2040poll ()
1337 PROTOTYPE:
1338 CODE: 2041 CODE:
1339 if (nreqs)
1340 {
1341 poll_wait (); 2042 poll_wait ();
1342 poll_cb (); 2043 RETVAL = poll_cb ();
1343 }
1344
1345int
1346poll_fileno()
1347 PROTOTYPE:
1348 CODE:
1349 RETVAL = respipe [0];
1350 OUTPUT: 2044 OUTPUT:
1351 RETVAL 2045 RETVAL
1352 2046
1353int 2047int
2048poll_fileno ()
2049 CODE:
2050 RETVAL = s_epipe_fd (&respipe);
2051 OUTPUT:
2052 RETVAL
2053
2054int
1354poll_cb(...) 2055poll_cb (...)
1355 PROTOTYPE: 2056 PROTOTYPE:
1356 CODE: 2057 CODE:
1357 RETVAL = poll_cb (); 2058 RETVAL = poll_cb ();
1358 OUTPUT: 2059 OUTPUT:
1359 RETVAL 2060 RETVAL
1360 2061
1361void 2062void
1362poll_wait() 2063poll_wait ()
1363 PROTOTYPE:
1364 CODE: 2064 CODE:
1365 if (nreqs)
1366 poll_wait (); 2065 poll_wait ();
1367 2066
1368int 2067int
1369nreqs() 2068nreqs ()
1370 PROTOTYPE:
1371 CODE: 2069 CODE:
1372 RETVAL = nreqs; 2070 RETVAL = eio_nreqs ();
1373 OUTPUT: 2071 OUTPUT:
1374 RETVAL 2072 RETVAL
1375 2073
2074int
2075nready ()
2076 CODE:
2077 RETVAL = eio_nready ();
2078 OUTPUT:
2079 RETVAL
2080
2081int
2082npending ()
2083 CODE:
2084 RETVAL = eio_npending ();
2085 OUTPUT:
2086 RETVAL
2087
2088int
2089nthreads ()
2090 CODE:
2091 RETVAL = eio_nthreads ();
2092 OUTPUT:
2093 RETVAL
2094
2095int
2096fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2097 CODE:
2098 RETVAL = posix_fadvise (fh, offset, length, advice);
2099 OUTPUT:
2100 RETVAL
2101
2102IV
2103sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2104 CODE:
2105 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2106 OUTPUT:
2107 RETVAL
2108
2109void
2110mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2111 PPCODE:
2112 sv_clear_foreign (scalar);
2113{
2114 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2115 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2116 if (addr == (void *)-1)
2117 XSRETURN_NO;
2118
2119 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2120
2121 if (!(prot & PROT_WRITE))
2122 SvREADONLY_on (scalar);
2123
2124 XSRETURN_YES;
2125}
2126
2127void
2128munmap (SV *scalar)
2129 CODE:
2130 sv_clear_foreign (scalar);
2131
2132SV *
2133mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2134 CODE:
2135{
2136 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2137 void *new;
2138
2139 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2140 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2141
2142 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2143
2144 RETVAL = &PL_sv_no;
2145
2146 if (new != (void *)-1)
2147 {
2148 RETVAL = new == (void *)mg->mg_ptr
2149 ? newSVpvn ("0 but true", 10)
2150 : &PL_sv_yes;
2151
2152 mg->mg_ptr = (char *)new;
2153 mg->mg_obj = (SV *)new_length;
2154
2155 SvPVX (scalar) = mg->mg_ptr;
2156 SvCUR_set (scalar, new_length);
2157 }
2158}
2159 OUTPUT:
2160 RETVAL
2161
2162int
2163madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2164 ALIAS:
2165 mprotect = 1
2166 CODE:
2167{
2168 STRLEN svlen;
2169 void *addr = SvPVbyte (scalar, svlen);
2170 STRLEN len = SvUV (length);
2171
2172 if (offset < 0)
2173 offset += svlen;
2174
2175 if (offset < 0 || offset > svlen)
2176 croak ("offset outside of scalar");
2177
2178 if (!SvOK (length) || len + offset > svlen)
2179 len = svlen - offset;
2180
2181 addr = (void *)(((intptr_t)addr) + offset);
2182 eio_page_align (&addr, &len);
2183
2184 switch (ix)
2185 {
2186 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2187 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2188 }
2189}
2190 OUTPUT:
2191 RETVAL
2192
2193int
2194munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2195 CODE:
2196{
2197 STRLEN svlen;
2198 void *addr = SvPVbyte (scalar, svlen);
2199 size_t len = SvUV (length);
2200
2201 if (offset < 0)
2202 offset += svlen;
2203
2204 if (offset < 0 || offset > svlen)
2205 croak ("offset outside of scalar");
2206
2207 if (!SvOK (length) || len + offset > svlen)
2208 len = svlen - offset;
2209
2210 addr = (void *)(((intptr_t)addr) + offset);
2211 eio_page_align (&addr, &len);
2212#if _POSIX_MEMLOCK_RANGE
2213 RETVAL = munlock (addr, len);
2214#else
2215 RETVAL = EIO_ENOSYS ();
2216#endif
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222munlockall ()
2223 CODE:
2224#if _POSIX_MEMLOCK
2225 munlockall ();
2226#else
2227 RETVAL = EIO_ENOSYS ();
2228#endif
2229 OUTPUT:
2230 RETVAL
2231
2232int
2233splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2234 CODE:
2235{
2236#if HAVE_LINUX_SPLICE
2237 loff_t off_in_, off_out_;
2238 RETVAL = splice (
2239 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2240 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2241 length, flags
2242 );
2243#else
2244 RETVAL = EIO_ENOSYS ();
2245#endif
2246}
2247 OUTPUT:
2248 RETVAL
2249
2250int
2251tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2252 CODE:
2253#if HAVE_LINUX_SPLICE
2254 RETVAL = tee (rfh, wfh, length, flags);
2255#else
2256 RETVAL = EIO_ENOSYS ();
2257#endif
2258 OUTPUT:
2259 RETVAL
2260
2261int
2262pipesize (aio_rfd rfh, int new_size = -1)
2263 PROTOTYPE: $;$
2264 CODE:
2265#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2266 if (new_size >= 0)
2267 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2268 else
2269 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2270#else
2271 errno = ENOSYS;
2272 RETVAL = -1;
2273#endif
2274 OUTPUT:
2275 RETVAL
2276
2277void
2278pipe2 (int flags = 0)
2279 PROTOTYPE: ;$
2280 PPCODE:
2281{
2282 int fd[2];
2283 int res;
2284
2285 if (flags)
2286#if HAVE_PIPE2
2287 res = pipe2 (fd, flags);
2288#else
2289 res = (errno = ENOSYS, -1);
2290#endif
2291 else
2292 res = pipe (fd);
2293
2294 if (!res)
2295 {
2296 EXTEND (SP, 2);
2297 PUSHs (newmortalFH (fd[0], O_RDONLY));
2298 PUSHs (newmortalFH (fd[1], O_WRONLY));
2299 }
2300}
2301
2302void
2303eventfd (unsigned int initval = 0, int flags = 0)
2304 PPCODE:
2305{
2306 int fd;
2307#if HAVE_EVENTFD
2308 fd = eventfd (initval, flags);
2309#else
2310 fd = (errno = ENOSYS, -1);
2311#endif
2312
2313 XPUSHs (newmortalFH (fd, O_RDWR));
2314}
2315
2316void
2317timerfd_create (int clockid, int flags = 0)
2318 PPCODE:
2319{
2320 int fd;
2321#if HAVE_TIMERFD
2322 fd = timerfd_create (clockid, flags);
2323#else
2324 fd = (errno = ENOSYS, -1);
2325#endif
2326
2327 XPUSHs (newmortalFH (fd, O_RDWR));
2328}
2329
2330void
2331timerfd_settime (SV *fh, int flags, NV interval, NV value)
2332 PPCODE:
2333{
2334 int fd = s_fileno_croak (fh, 0);
2335#if HAVE_TIMERFD
2336 int res;
2337 struct itimerspec its, ots;
2338
2339 ts_set (&its.it_interval, interval);
2340 ts_set (&its.it_value , value);
2341 res = timerfd_settime (fd, flags, &its, &ots);
2342
2343 if (!res)
2344 {
2345 EXTEND (SP, 2);
2346 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2347 PUSHs (newSVnv (ts_get (&ots.it_value)));
2348 }
2349#else
2350 errno = ENOSYS;
2351#endif
2352}
2353
2354void
2355timerfd_gettime (SV *fh)
2356 PPCODE:
2357{
2358 int fd = s_fileno_croak (fh, 0);
2359#if HAVE_TIMERFD
2360 int res;
2361 struct itimerspec ots;
2362 res = timerfd_gettime (fd, &ots);
2363
2364 if (!res)
2365 {
2366 EXTEND (SP, 2);
2367 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2368 PUSHs (newSVnv (ts_get (&ots.it_value)));
2369 }
2370#else
2371 errno = ENOSYS;
2372#endif
2373}
2374
2375UV
2376get_fdlimit ()
2377 CODE:
2378#if HAVE_RLIMITS
2379 struct rlimit rl;
2380 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2381 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2382#endif
2383 XSRETURN_UNDEF;
2384 OUTPUT:
2385 RETVAL
2386
2387void
2388min_fdlimit (UV limit = 0x7fffffffU)
2389 CODE:
2390{
2391#if HAVE_RLIMITS
2392 struct rlimit rl;
2393 rlim_t orig_rlim_max;
2394 UV bit;
2395
2396 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2397 goto fail;
2398
2399 if (rl.rlim_cur == RLIM_INFINITY)
2400 XSRETURN_YES;
2401
2402 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2403
2404 if (rl.rlim_cur < limit)
2405 {
2406 rl.rlim_cur = limit;
2407
2408 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2409 rl.rlim_max = rl.rlim_cur;
2410 }
2411
2412 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2413 XSRETURN_YES;
2414
2415 if (errno == EPERM)
2416 {
2417 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2418 /* our limit overflows a system-wide limit */
2419 /* try an adaptive algorithm, but do not lower the hardlimit */
2420 rl.rlim_max = 0;
2421 for (bit = 0x40000000U; bit; bit >>= 1)
2422 {
2423 rl.rlim_max |= bit;
2424 rl.rlim_cur = rl.rlim_max;
2425
2426 /* nevr decrease the hard limit */
2427 if (rl.rlim_max < orig_rlim_max)
2428 break;
2429
2430 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2431 rl.rlim_max &= ~bit; /* too high, remove bit again */
2432 }
2433
2434 /* now, raise the soft limit to the max permitted */
2435 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2436 {
2437 rl.rlim_cur = rl.rlim_max;
2438 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2439 errno = EPERM;
2440 }
2441 }
2442#endif
2443 fail:
2444 XSRETURN_UNDEF;
2445}
2446
2447void _on_next_submit (SV *cb)
2448 CODE:
2449 SvREFCNT_dec (on_next_submit);
2450 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2451
1376PROTOTYPES: DISABLE 2452PROTOTYPES: DISABLE
2453
2454MODULE = IO::AIO PACKAGE = IO::AIO::WD
2455
2456BOOT:
2457{
2458 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2459 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2460}
2461
2462void
2463DESTROY (SV *self)
2464 CODE:
2465{
2466 aio_wd wd = SvAIO_WD (self);
2467#if HAVE_AT
2468 {
2469 SV *callback = &PL_sv_undef;
2470 dREQ; /* clobbers next_pri :/ */
2471 next_pri = req->pri; /* restore next_pri */
2472 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2473 req->type = EIO_WD_CLOSE;
2474 req->wd = wd;
2475 REQ_SEND;
2476 }
2477#else
2478 eio_wd_close_sync (wd);
2479#endif
2480}
1377 2481
1378MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2482MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379 2483
1380void 2484void
1381cancel (aio_req_ornot req) 2485cancel (aio_req_ornot req)
1382 CODE: 2486 CODE:
1383 req_cancel (req); 2487 eio_cancel (req);
1384 2488
1385void 2489void
1386cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2490cb (aio_req_ornot req, SV *callback = NO_INIT)
1387 CODE: 2491 PPCODE:
2492{
2493 if (GIMME_V != G_VOID)
2494 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2495
2496 if (items > 1)
2497 {
2498 SV *cb_cv = get_cb (callback);
2499
1388 SvREFCNT_dec (req->callback); 2500 SvREFCNT_dec (req->callback);
1389 req->callback = newSVsv (callback); 2501 req->callback = SvREFCNT_inc (cb_cv);
2502 }
2503}
1390 2504
1391MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2505MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1392 2506
1393void 2507void
1394add (aio_req grp, ...) 2508add (aio_req grp, ...)
1395 PPCODE: 2509 PPCODE:
1396{ 2510{
1397 int i; 2511 int i;
1398 aio_req req;
1399 2512
1400 if (grp->fd == 2) 2513 if (grp->int1 == 2)
1401 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2514 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402 2515
1403 for (i = 1; i < items; ++i ) 2516 for (i = 1; i < items; ++i )
1404 { 2517 {
2518 aio_req req;
2519
1405 if (GIMME_V != G_VOID) 2520 if (GIMME_V != G_VOID)
1406 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2521 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1407 2522
1408 req = SvAIO_REQ (ST (i)); 2523 req = SvAIO_REQ (ST (i));
1409 2524
1410 if (req) 2525 if (req)
1411 { 2526 eio_grp_add (grp, req);
1412 ++grp->length;
1413 req->grp = grp;
1414
1415 req->grp_prev = 0;
1416 req->grp_next = grp->grp_first;
1417
1418 if (grp->grp_first)
1419 grp->grp_first->grp_prev = req;
1420
1421 grp->grp_first = req;
1422 }
1423 } 2527 }
1424} 2528}
2529
2530void
2531cancel_subs (aio_req_ornot req)
2532 CODE:
2533 req_cancel_subs (req);
1425 2534
1426void 2535void
1427result (aio_req grp, ...) 2536result (aio_req grp, ...)
1428 CODE: 2537 CODE:
1429{ 2538{
1430 int i; 2539 int i;
2540 AV *av;
2541
2542 grp->errorno = errno;
2543
1431 AV *av = newAV (); 2544 av = newAV ();
2545 av_extend (av, items - 1);
1432 2546
1433 for (i = 1; i < items; ++i ) 2547 for (i = 1; i < items; ++i )
1434 av_push (av, newSVsv (ST (i))); 2548 av_push (av, newSVsv (ST (i)));
1435 2549
1436 SvREFCNT_dec (grp->data); 2550 SvREFCNT_dec (grp->sv1);
1437 grp->data = (SV *)av; 2551 grp->sv1 = (SV *)av;
1438} 2552}
2553
2554void
2555errno (aio_req grp, int errorno = errno)
2556 CODE:
2557 grp->errorno = errorno;
1439 2558
1440void 2559void
1441limit (aio_req grp, int limit) 2560limit (aio_req grp, int limit)
1442 CODE: 2561 CODE:
1443 grp->fd2 = limit; 2562 eio_grp_limit (grp, limit);
1444 aio_grp_feed (grp);
1445 2563
1446void 2564void
1447feed (aio_req grp, SV *callback=&PL_sv_undef) 2565feed (aio_req grp, SV *callback = &PL_sv_undef)
1448 CODE: 2566 CODE:
1449{ 2567{
1450 SvREFCNT_dec (grp->fh2); 2568 SvREFCNT_dec (grp->sv2);
1451 grp->fh2 = newSVsv (callback); 2569 grp->sv2 = newSVsv (callback);
2570 grp->feed = aio_grp_feed;
1452 2571
1453 if (grp->fd2 <= 0) 2572 if (grp->int2 <= 0)
1454 grp->fd2 = 2; 2573 grp->int2 = 2;
1455 2574
1456 aio_grp_feed (grp); 2575 eio_grp_limit (grp, grp->int2);
1457} 2576}
1458 2577

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