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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC vs.
Revision 1.263 by root, Sun Aug 12 06:03:20 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>
17#include <sys/socket.h>
22#include <sys/stat.h> 18#include <sys/stat.h>
23#include <limits.h> 19#include <limits.h>
24#include <unistd.h>
25#include <fcntl.h> 20#include <fcntl.h>
26#include <signal.h>
27#include <sched.h> 21#include <sched.h>
28 22
29#if HAVE_SENDFILE 23#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> 24# include <sys/mman.h>
35# elif __hpux 25#endif
26
27/* the incompetent fool that created musl keeps __linux__, refuses
28 * to implement any linux standard apis, and also has no way to test
29 * for his broken iplementation. don't complain to me if this fails
30 * for you.
31 */
32#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
33# include <linux/fs.h>
34# ifdef FS_IOC_FIEMAP
35# include <linux/types.h>
36# include <linux/fiemap.h>
37# define HAVE_FIEMAP 1
38# endif
39#endif
40
41/* perl namespace pollution */
42#undef VERSION
43
44/* perl stupidly overrides readdir and maybe others */
45/* with thread-unsafe versions, imagine that :( */
46#undef readdir
47#undef opendir
48#undef closedir
49
50#ifdef _WIN32
51
52 // perl overrides all those nice libc functions
53
54 #undef malloc
55 #undef free
56 #undef open
57 #undef read
58 #undef write
59 #undef send
60 #undef recv
61 #undef stat
62 #undef lstat
63 #undef fstat
64 #undef truncate
65 #undef ftruncate
66 #undef open
67 #undef link
68 #undef close
69 #undef unlink
70 #undef mkdir
71 #undef rmdir
72 #undef rename
73 #undef lseek
74 #undef opendir
75 #undef readdir
76 #undef closedir
77 #undef chmod
78 #undef fchmod
79 #undef dup
80 #undef dup2
81 #undef abort
82 #undef pipe
83
84 #define EIO_STRUCT_STAT struct _stati64
85 #define EIO_STRUCT_STATI64
86
87#else
88
36# include <sys/socket.h> 89 #include <sys/time.h>
37# elif __solaris /* not yet */
38# include <sys/sendfile.h> 90 #include <sys/select.h>
91 #include <unistd.h>
92 #include <utime.h>
93 #include <signal.h>
94
95 #define EIO_STRUCT_STAT Stat_t
96
97#endif
98
99/*****************************************************************************/
100
101#if __GNUC__ >= 3
102# define expect(expr,value) __builtin_expect ((expr),(value))
103#else
104# define expect(expr,value) (expr)
105#endif
106
107#define expect_false(expr) expect ((expr) != 0, 0)
108#define expect_true(expr) expect ((expr) != 0, 1)
109
110/*****************************************************************************/
111
112#include "config.h"
113
114#if HAVE_ST_XTIMENSEC
115# define ATIMENSEC PL_statcache.st_atimensec
116# define MTIMENSEC PL_statcache.st_mtimensec
117# define CTIMENSEC PL_statcache.st_ctimensec
118#elif HAVE_ST_XTIMESPEC
119# define ATIMENSEC PL_statcache.st_atim.tv_nsec
120# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
121# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
122#else
123# define ATIMENSEC 0
124# define MTIMENSEC 0
125# define CTIMENSEC 0
126#endif
127
128#include "schmorp.h"
129
130#if HAVE_EVENTFD
131# include <sys/eventfd.h>
132#endif
133
134#if HAVE_TIMERFD
135# include <sys/timerfd.h>
136#endif
137
138#if HAVE_RLIMITS
139 #include <sys/time.h>
140 #include <sys/resource.h>
141#endif
142
143typedef SV SV8; /* byte-sv, used for argument-checking */
144typedef int aio_rfd; /* read file desriptor */
145typedef int aio_wfd; /* write file descriptor */
146
147static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
148
149#define EIO_REQ_MEMBERS \
150 SV *callback; \
151 SV *sv1, *sv2; \
152 SV *sv3, *sv4; \
153 STRLEN stroffset; \
154 SV *self;
155
156#define EIO_NO_WRAPPERS 1
157
158#include "libeio/eio.h"
159
160static int req_invoke (eio_req *req);
161#define EIO_FINISH(req) req_invoke (req)
162static void req_destroy (eio_req *grp);
163#define EIO_DESTROY(req) req_destroy (req)
164
165#include "libeio/eio.c"
166
167#if !HAVE_POSIX_FADVISE
168# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
169#endif
170
171#if !HAVE_POSIX_MADVISE
172# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
173#endif
174
175#ifndef MAP_ANONYMOUS
176# ifdef MAP_ANON
177# define MAP_ANONYMOUS MAP_ANON
39# else 178# else
40# error sendfile support requested but not available 179# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41# endif 180# endif
42#endif 181#endif
43 182
44/* used for struct dirent, AIX doesn't provide it */ 183#ifndef makedev
45#ifndef NAME_MAX 184# define makedev(maj,min) (((maj) << 8) | (min))
46# define NAME_MAX 4096
47#endif 185#endif
48 186#ifndef major
49#if __ia64 187# 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 188#endif
189#ifndef minor
190# define minor(dev) ((dev) & 0xff)
191#endif
56 192
57/* buffer size for various temporary buffers */ 193#if PAGESIZE <= 0
58#define AIO_BUFSIZE 65536 194# define PAGESIZE sysconf (_SC_PAGESIZE)
195#endif
59 196
60#define dBUF \ 197/*****************************************************************************/
61 char *aio_buf = malloc (AIO_BUFSIZE); \ 198
62 if (!aio_buf) \ 199#if !_POSIX_MAPPED_FILES
200# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
201# define munmap(addr,length) EIO_ENOSYS ()
202#endif
203
204#if !_POSIX_MEMORY_PROTECTION
205# define mprotect(addr,len,prot) EIO_ENOSYS ()
206#endif
207
208#if !MREMAP_MAYMOVE
209# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
210#endif
211
212#define FOREIGN_MAGIC PERL_MAGIC_ext
213
214static int ecb_cold
215mmap_free (pTHX_ SV *sv, MAGIC *mg)
216{
217 int old_errno = errno;
218 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
219 errno = old_errno;
220
221 mg->mg_obj = 0; /* just in case */
222
223 SvREADONLY_off (sv);
224
225 if (SvPVX (sv) != mg->mg_ptr)
226 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
227
228 SvCUR_set (sv, 0);
229 SvPVX (sv) = 0;
230 SvOK_off (sv);
231
63 return -1; 232 return 0;
233}
64 234
65#define fBUF free (aio_buf) 235static MGVTBL mmap_vtbl = {
66 236 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}; 237};
80 238
81#define AIO_REQ_KLASS "IO::AIO::REQ" 239static int ecb_cold
82#define AIO_GRP_KLASS "IO::AIO::GRP" 240sysfree_free (pTHX_ SV *sv, MAGIC *mg)
83
84typedef struct aio_cb
85{ 241{
86 struct aio_cb *volatile next; 242 free (mg->mg_ptr);
243 mg->mg_obj = 0; /* just in case */
87 244
88 SV *data, *callback; 245 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;
95 246
96 STRLEN dataoffset; 247 if (SvPVX (sv) != mg->mg_ptr)
97 int type; 248 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
98 int fd, fd2;
99 int errorno;
100 mode_t mode; /* open */
101 249
102 unsigned char flags; 250 SvCUR_set (sv, 0);
103 unsigned char pri; 251 SvPVX (sv) = 0;
252 SvOK_off (sv);
104 253
105 SV *self; /* the perl counterpart of this request, if any */ 254 return 0;
106 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 255}
107} aio_cb;
108 256
109enum { 257static MGVTBL sysfree_vtbl = {
110 FLAG_CANCELLED = 0x01, 258 0, 0, 0, 0, sysfree_free
111}; 259};
112 260
113typedef aio_cb *aio_req; 261/*****************************************************************************/
114typedef aio_cb *aio_req_ornot;
115 262
116enum { 263/* helper: set scalar to foreign ptr with custom free */
117 PRI_MIN = -4, 264static void
118 PRI_MAX = 4, 265sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
266{
267 sv_force_normal (sv);
119 268
120 DEFAULT_PRI = 0, 269 /* we store the length in mg_obj, as namlen is I32 :/ */
121 PRI_BIAS = -PRI_MIN, 270 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
122 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 271 ->mg_obj = (SV *)length;
123};
124 272
125static int next_pri = DEFAULT_PRI + PRI_BIAS; 273 SvUPGRADE (sv, SVt_PV); /* nop... */
126 274
127static int started, wanted; 275 if (SvLEN (sv))
128static volatile int nreqs; 276 Safefree (SvPVX (sv));
129static int max_outstanding = 1<<30;
130static int respipe [2];
131 277
132#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 278 SvPVX (sv) = (char *)addr;
133# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 279 SvCUR_set (sv, length);
134#else 280 SvLEN_set (sv, 0);
135# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 281 SvPOK_only (sv);
136#endif 282}
137 283
138static pthread_mutex_t reslock = AIO_MUTEX_INIT; 284static void
139static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 285sv_clear_foreign (SV *sv)
140static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 286{
287 /* todo: iterate over magic and only free ours, but of course */
288 /* the perl5porters will call that (correct) behaviour buggy */
289 sv_unmagic (sv, FOREIGN_MAGIC);
290}
141 291
142/* 292/*****************************************************************************/
143 * a somewhat faster data structure might be nice, but 293
144 * with 8 priorities this actually needs <20 insns 294/* defines all sorts of constants to 0 unless they are already defined */
145 * per shift, the most expensive operation. 295/* also provides const_iv_ and const_niv_ macros for them */
296#include "def0.h"
297
298/*****************************************************************************/
299
300static void
301fiemap (eio_req *req)
302{
303 req->result = -1;
304
305#if HAVE_FIEMAP
306 /* assume some c99 */
307 struct fiemap *fiemap = 0;
308 size_t end_offset;
309 int count = req->int3;
310
311 req->flags |= EIO_FLAG_PTR1_FREE;
312
313 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
314 /* increase in 3.5kb steps */
315 if (count < 0)
316 count = 8;
317
318 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
319 errno = ENOMEM;
320 if (!fiemap)
321 return;
322
323 req->ptr1 = fiemap;
324
325 fiemap->fm_start = req->offs;
326 fiemap->fm_length = req->size;
327 fiemap->fm_flags = req->int2;
328 fiemap->fm_extent_count = count;
329
330 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
331 return;
332
333 if (req->int3 >= 0 /* not autosizing */
334 || !fiemap->fm_mapped_extents /* no more extents */
335 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
336 goto done;
337
338 /* else we have to loop -
339 * it would be tempting (actually I tried that first) to just query the
340 * number of extents needed, but linux often feels like not returning all
341 * extents, without telling us it left any out. this complicates
342 * this quite a bit.
146 */ 343 */
147typedef struct {
148 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149 int size;
150} reqq;
151 344
152static reqq req_queue; 345 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
153static reqq res_queue;
154 346
155int reqq_push (reqq *q, aio_req req) 347 for (;;)
156{
157 int pri = req->pri;
158 req->next = 0;
159
160 if (q->qe[pri])
161 { 348 {
162 q->qe[pri]->next = req; 349 /* 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; 350 char scratch[3072];
164 } 351 struct fiemap *incmap = (struct fiemap *)scratch;
165 else
166 q->qe[pri] = q->qs[pri] = req;
167 352
168 return q->size++; 353 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
169} 354 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
355 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
356 incmap->fm_flags = fiemap->fm_flags;
357 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
170 358
171aio_req reqq_shift (reqq *q) 359 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
172{
173 int pri;
174
175 if (!q->size)
176 return 0; 360 return;
177 361
178 --q->size; 362 if (!incmap->fm_mapped_extents)
363 goto done;
179 364
180 for (pri = NUM_PRI; pri--; ) 365 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
181 { 366 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
182 aio_req req = q->qs[pri]; 367 errno = ENOMEM;
183
184 if (req) 368 if (!fiemap)
369 return;
370
371 req->ptr1 = fiemap;
372
373 for (count = 0; count < incmap->fm_mapped_extents; ++count)
185 { 374 {
186 if (!(q->qs[pri] = req->next)) 375 struct fiemap_extent *e = incmap->fm_extents + count;
187 q->qe[pri] = 0;
188 376
189 return req; 377 if (e->fe_logical + e->fe_length >= end_offset)
378 goto done;
379
380 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
381
382 if (e->fe_flags & FIEMAP_EXTENT_LAST)
383 goto done;
384
190 } 385 }
191 } 386 }
192 387
193 abort (); 388done:
194} 389 req->result = 0;
195 390
391#else
392 errno = ENOSYS;
393#endif
394}
395
396/*****************************************************************************/
397
398enum {
399 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
400};
401
402typedef eio_req *aio_req;
403typedef eio_req *aio_req_ornot;
404typedef eio_wd aio_wd;
405
406static SV *on_next_submit;
407static int next_pri = EIO_PRI_DEFAULT;
408static int max_outstanding;
409
410static s_epipe respipe;
411
412static void req_destroy (aio_req req);
196static void req_invoke (aio_req req); 413static void req_cancel (aio_req req);
197static void req_free (aio_req req); 414
415static void
416want_poll (void)
417{
418 /* write a dummy byte to the pipe so fh becomes ready */
419 s_epipe_signal (&respipe);
420}
421
422static void
423done_poll (void)
424{
425 /* read any signals sent by the worker threads */
426 s_epipe_drain (&respipe);
427}
198 428
199/* must be called at most once */ 429/* must be called at most once */
200static SV *req_sv (aio_req req, const char *klass) 430static SV *
431req_sv (aio_req req, HV *stash)
201{ 432{
202 if (!req->self) 433 if (!req->self)
203 { 434 {
204 req->self = (SV *)newHV (); 435 req->self = (SV *)newHV ();
205 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 436 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206 } 437 }
207 438
208 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 439 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209} 440}
210 441
211static aio_req SvAIO_REQ (SV *sv) 442static SV *
443newSVaio_wd (aio_wd wd)
444{
445 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
446}
447
448static aio_req
449SvAIO_REQ (SV *sv)
212{ 450{
213 MAGIC *mg; 451 MAGIC *mg;
214 452
215 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 453 if (!SvROK (sv)
454 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
455 || (SvSTASH (SvRV (sv)) != aio_grp_stash
456 && SvSTASH (SvRV (sv)) != aio_req_stash
457 && !sv_derived_from (sv, "IO::AIO::REQ")))
216 croak ("object of class " AIO_REQ_KLASS " expected"); 458 croak ("object of class IO::AIO::REQ expected");
217 459
218 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 460 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219 461
220 return mg ? (aio_req)mg->mg_ptr : 0; 462 return mg ? (aio_req)mg->mg_ptr : 0;
221} 463}
222 464
465static aio_wd
466SvAIO_WD (SV *sv)
467{
468 if (!SvROK (sv)
469 || SvTYPE (SvRV (sv)) != SVt_PVMG
470 || SvSTASH (SvRV (sv)) != aio_wd_stash)
471 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
472
473 return (aio_wd)(long)SvIVX (SvRV (sv));
474}
475
476static SV *
477newmortalFH (int fd, int flags)
478{
479 if (fd < 0)
480 return &PL_sv_undef;
481
482 GV *gv = (GV *)sv_newmortal ();
483 char sym[64];
484 int symlen;
485
486 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
487 gv_init (gv, aio_stash, sym, symlen, 0);
488
489 symlen = snprintf (
490 sym,
491 sizeof (sym),
492 "%s&=%d",
493 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
494 fd
495 );
496
497 return do_open (gv, sym, symlen, 0, 0, 0, 0)
498 ? (SV *)gv : &PL_sv_undef;
499}
500
501static void
223static void aio_grp_feed (aio_req grp) 502aio_grp_feed (aio_req grp)
224{ 503{
225 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 504 if (grp->sv2 && SvOK (grp->sv2))
226 { 505 {
227 int old_len = grp->length;
228
229 if (grp->fh2 && SvOK (grp->fh2))
230 {
231 dSP; 506 dSP;
232 507
233 ENTER; 508 ENTER;
234 SAVETMPS; 509 SAVETMPS;
235 PUSHMARK (SP); 510 PUSHMARK (SP);
236 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 511 XPUSHs (req_sv (grp, aio_grp_stash));
237 PUTBACK; 512 PUTBACK;
238 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 513 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239 SPAGAIN; 514 SPAGAIN;
240 FREETMPS; 515 FREETMPS;
241 LEAVE; 516 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 } 517 }
252} 518}
253 519
254static void aio_grp_dec (aio_req grp) 520static void
521req_submit (eio_req *req)
255{ 522{
256 --grp->length; 523 eio_submit (req);
257 524
258 /* call feeder, if applicable */ 525 if (expect_false (on_next_submit))
259 aio_grp_feed (grp);
260
261 /* finish, if done */
262 if (!grp->length && grp->fd)
263 { 526 {
264 req_invoke (grp); 527 dSP;
265 req_free (grp); 528 SV *cb = sv_2mortal (on_next_submit);
529
530 on_next_submit = 0;
531
532 PUSHMARK (SP);
533 PUTBACK;
534 call_sv (cb, G_DISCARD | G_EVAL);
266 } 535 }
267} 536}
268 537
269static void poll_wait () 538static int
539req_invoke (eio_req *req)
270{ 540{
271 fd_set rfd; 541 if (req->flags & FLAG_SV2_RO_OFF)
542 SvREADONLY_off (req->sv2);
272 543
273 while (nreqs) 544 if (!EIO_CANCELLED (req) && req->callback)
274 { 545 {
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; 546 dSP;
297 547 static SV *sv_result_cache; /* caches the result integer SV */
298 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 548 SV *sv_result;
299 {
300 errno = req->errorno;
301 549
302 ENTER; 550 ENTER;
303 SAVETMPS; 551 SAVETMPS;
304 PUSHMARK (SP); 552 PUSHMARK (SP);
305 EXTEND (SP, 1); 553 EXTEND (SP, 1);
306 554
555 /* do not recreate the result IV from scratch each time */
556 if (expect_true (sv_result_cache))
557 {
558 sv_result = sv_result_cache; sv_result_cache = 0;
559 SvIV_set (sv_result, req->result);
560 SvIOK_only (sv_result);
561 }
562 else
563 {
564 sv_result = newSViv (req->result);
565 SvREADONLY_on (sv_result);
566 }
567
307 switch (req->type) 568 switch (req->type)
308 { 569 {
570 case EIO_WD_OPEN:
571 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
572 break;
573
309 case REQ_READDIR: 574 case EIO_READDIR:
310 { 575 {
311 SV *rv = &PL_sv_undef; 576 SV *rv = &PL_sv_undef;
312 577
313 if (req->result >= 0) 578 if (req->result >= 0)
314 { 579 {
580 int i;
315 char *buf = req->data2ptr; 581 char *names = (char *)req->ptr2;
582 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316 AV *av = newAV (); 583 AV *av = newAV ();
317 584
318 while (req->result) 585 av_extend (av, req->result - 1);
586
587 for (i = 0; i < req->result; ++i)
319 { 588 {
589 if (req->int1 & EIO_READDIR_DENTS)
590 {
591 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
592
593 if (req->int1 & EIO_READDIR_CUSTOM2)
594 {
595 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
596 AV *avent = newAV ();
597
598 av_extend (avent, 2);
599
600 if (!sv_type [ent->type])
601 {
602 sv_type [ent->type] = newSViv (ent->type);
603 SvREADONLY_on (sv_type [ent->type]);
604 }
605
606 av_store (avent, 0, namesv);
607 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
608 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
609
610 av_store (av, i, newRV_noinc ((SV *)avent));
611 }
612 else
613 av_store (av, i, namesv);
614
615 ++ent;
616 }
617 else
618 {
320 SV *sv = newSVpv (buf, 0); 619 SV *name = newSVpv (names, 0);
321
322 av_push (av, sv); 620 av_store (av, i, name);
323 buf += SvCUR (sv) + 1; 621 names += SvCUR (name) + 1;
324 req->result--; 622 }
325 } 623 }
326 624
327 rv = sv_2mortal (newRV_noinc ((SV *)av)); 625 rv = sv_2mortal (newRV_noinc ((SV *)av));
328 } 626 }
329 627
330 PUSHs (rv); 628 PUSHs (rv);
629
630 if (req->int1 & EIO_READDIR_CUSTOM1)
631 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331 } 632 }
332 break; 633 break;
333 634
334 case REQ_OPEN: 635 case EIO_OPEN:
636 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
637 break;
638
639 case EIO_STATVFS:
640 case EIO_FSTATVFS:
335 { 641 {
336 /* convert fd to fh */ 642 SV *rv = &PL_sv_undef;
337 SV *fh; 643
644#ifndef _WIN32
645 if (req->result >= 0)
646 {
647 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
648 HV *hv = newHV ();
649 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
650 * chooses to make it a struct.
651 */
652 unsigned long fsid = 0;
653 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
338 654
339 PUSHs (sv_2mortal (newSViv (req->result))); 655 rv = sv_2mortal (newRV_noinc ((SV *)hv));
340 PUTBACK;
341 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342 SPAGAIN;
343 656
344 fh = SvREFCNT_inc (POPs); 657 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
658 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
659 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
660 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
661 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
662 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
663 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
664 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
665 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
666 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
667 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
668 }
669#endif
345 670
346 PUSHMARK (SP); 671 PUSHs (rv);
347 XPUSHs (sv_2mortal (fh));
348 } 672 }
673
349 break; 674 break;
350 675
351 case REQ_GROUP: 676 case EIO_GROUP:
352 req->fd = 2; /* mark group as finished */ 677 req->int1 = 2; /* mark group as finished */
353 678
354 if (req->data) 679 if (req->sv1)
355 { 680 {
356 int i; 681 int i;
357 AV *av = (AV *)req->data; 682 AV *av = (AV *)req->sv1;
358 683
359 EXTEND (SP, AvFILL (av) + 1); 684 EXTEND (SP, AvFILL (av) + 1);
360 for (i = 0; i <= AvFILL (av); ++i) 685 for (i = 0; i <= AvFILL (av); ++i)
361 PUSHs (*av_fetch (av, i, 0)); 686 PUSHs (*av_fetch (av, i, 0));
362 } 687 }
363 break; 688 break;
364 689
365 case REQ_NOP: 690 case EIO_NOP:
366 case REQ_SLEEP: 691 case EIO_BUSY:
367 break; 692 break;
368 693
694 case EIO_READLINK:
695 case EIO_REALPATH:
696 if (req->result > 0)
697 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
698 break;
699
700 case EIO_STAT:
701 case EIO_LSTAT:
702 case EIO_FSTAT:
703 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
704
705 if (!(PL_laststatval = req->result))
706 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
707 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
708
709 PUSHs (sv_result);
710 break;
711
712 case EIO_SEEK:
713 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
714 break;
715
716 case EIO_READ:
717 {
718 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
719 *SvEND (req->sv2) = 0;
720 SvPOK_only (req->sv2);
721 SvSETMAGIC (req->sv2);
722 PUSHs (sv_result);
723 }
724 break;
725
726 case EIO_SLURP:
727 {
728 if (req->result >= 0)
729 {
730 /* if length was originally not known, we steal the malloc'ed memory */
731 if (req->flags & EIO_FLAG_PTR2_FREE)
732 {
733 req->flags &= ~EIO_FLAG_PTR2_FREE;
734 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
735 }
736 else
737 {
738 SvCUR_set (req->sv2, req->result);
739 *SvEND (req->sv2) = 0;
740 SvPOK_only (req->sv2);
741 }
742
743 SvSETMAGIC (req->sv2);
744 }
745
746 PUSHs (sv_result);
747 }
748 break;
749
750 case EIO_CUSTOM:
751 if (req->feed == fiemap)
752 {
753#if HAVE_FIEMAP
754 if (!req->result)
755 {
756 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
757
758 if (fiemap->fm_extent_count)
759 {
760 AV *av = newAV ();
761 int i;
762
763 while (fiemap->fm_mapped_extents)
764 {
765 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
766 AV *ext_av = newAV ();
767
768 av_store (ext_av, 3, newSVuv (extent->fe_flags));
769 av_store (ext_av, 2, newSVval64 (extent->fe_length));
770 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
771 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
772
773 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
774 }
775
776 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
777 }
778 else
779 {
780 SvIV_set (sv_result, fiemap->fm_mapped_extents);
781 PUSHs (sv_result);
782 }
783 }
784#endif
785 }
786 else
787 PUSHs (sv_result);
788 break;
789
790 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
791 if (req->result > 0)
792 SvIV_set (sv_result, 0);
793 /* FALLTHROUGH */
794
369 default: 795 default:
370 PUSHs (sv_2mortal (newSViv (req->result))); 796 PUSHs (sv_result);
371 break; 797 break;
372 } 798 }
373 799
800 errno = req->errorno;
374 801
375 PUTBACK; 802 PUTBACK;
376 call_sv (req->callback, G_VOID | G_EVAL); 803 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377 SPAGAIN; 804 SPAGAIN;
805
806 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
807 SvREFCNT_dec (sv_result);
808 else
809 sv_result_cache = sv_result;
378 810
379 FREETMPS; 811 FREETMPS;
380 LEAVE; 812 LEAVE;
813
814 PUTBACK;
381 } 815 }
382 816
383 if (req->grp) 817 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} 818}
403 819
404static void req_free (aio_req req) 820static void
821req_destroy (aio_req req)
405{ 822{
406 if (req->self) 823 if (req->self)
407 { 824 {
408 sv_unmagic (req->self, PERL_MAGIC_ext); 825 sv_unmagic (req->self, PERL_MAGIC_ext);
409 SvREFCNT_dec (req->self); 826 SvREFCNT_dec (req->self);
410 } 827 }
411 828
412 SvREFCNT_dec (req->data);
413 SvREFCNT_dec (req->fh); 829 SvREFCNT_dec (req->sv1);
414 SvREFCNT_dec (req->fh2); 830 SvREFCNT_dec (req->sv2);
831 SvREFCNT_dec (req->sv3);
832 SvREFCNT_dec (req->sv4);
415 SvREFCNT_dec (req->callback); 833 SvREFCNT_dec (req->callback);
416 Safefree (req->statdata);
417 834
418 if (req->type == REQ_READDIR && req->result >= 0)
419 free (req->data2ptr);
420
421 Safefree (req); 835 free (req);
422} 836}
423 837
424static void req_cancel (aio_req req) 838static void
839req_cancel_subs (aio_req grp)
425{ 840{
426 req->flags |= FLAG_CANCELLED;
427
428 if (req->type == REQ_GROUP) 841 if (grp->type != EIO_GROUP)
842 return;
843
844 SvREFCNT_dec (grp->sv2);
845 grp->sv2 = 0;
846
847 eio_grp_cancel (grp);
848}
849
850static void ecb_cold
851create_respipe (void)
852{
853 if (s_epipe_renew (&respipe))
854 croak ("IO::AIO: unable to initialize result pipe");
855}
856
857static void
858poll_wait (void)
859{
860 while (eio_nreqs ())
429 { 861 {
430 aio_req sub; 862 int size;
431 863
432 for (sub = req->grp_first; sub; sub = sub->grp_next) 864 X_LOCK (EIO_POOL->reslock);
433 req_cancel (sub); 865 size = EIO_POOL->res_queue.size;
866 X_UNLOCK (EIO_POOL->reslock);
867
868 if (size)
869 return;
870
871 etp_maybe_start_thread (EIO_POOL);
872
873 s_epipe_wait (&respipe);
434 } 874 }
435} 875}
436 876
437static int poll_cb () 877static int
878poll_cb (void)
438{ 879{
439 dSP;
440 int count = 0;
441 int do_croak = 0;
442 aio_req req;
443
444 for (;;) 880 for (;;)
445 { 881 {
446 pthread_mutex_lock (&reslock); 882 int res = eio_poll ();
447 req = reqq_shift (&res_queue);
448 883
449 if (req) 884 if (res > 0)
885 croak (0);
886
887 if (!max_outstanding || max_outstanding > eio_nreqs ())
888 return res;
889
890 poll_wait ();
891 }
892}
893
894static void ecb_cold
895reinit (void)
896{
897 create_respipe ();
898
899 if (eio_init (want_poll, done_poll) < 0)
900 croak ("IO::AIO: unable to initialise eio library");
901}
902
903/*****************************************************************************/
904
905static SV *
906get_cb (SV *cb_sv)
907{
908 SvGETMAGIC (cb_sv);
909 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
910}
911
912static aio_req ecb_noinline
913dreq (SV *callback)
914{
915 SV *cb_cv;
916 aio_req req;
917 int req_pri = next_pri;
918 next_pri = EIO_PRI_DEFAULT;
919
920 cb_cv = get_cb (callback);
921
922 req = calloc (sizeof (*req), 1);
923 if (!req)
924 croak ("out of memory during eio_req allocation");
925
926 req->callback = SvREFCNT_inc (cb_cv);
927 req->pri = req_pri;
928
929 return req;
930}
931
932#define dREQ \
933 aio_req req = dreq (callback); \
934
935#define REQ_SEND \
936 PUTBACK; \
937 req_submit (req); \
938 SPAGAIN; \
939 \
940 if (GIMME_V != G_VOID) \
941 XPUSHs (req_sv (req, aio_req_stash));
942
943ecb_inline void
944req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
945{
946 if (expect_false (SvROK (path)))
947 {
948 SV *rv = SvRV (path);
949 SV *wdob;
950
951 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
450 { 952 {
451 if (!res_queue.size) 953 path = AvARRAY (rv)[1];
954 wdob = AvARRAY (rv)[0];
955
956 if (SvOK (wdob))
452 { 957 {
453 /* read any signals sent by the worker threads */ 958 *wd = SvAIO_WD (wdob);
454 char buf [32]; 959 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
455 while (read (respipe [0], buf, 32) == 32)
456 ;
457 } 960 }
961 else
962 *wd = EIO_INVALID_WD;
458 } 963 }
459 964 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 { 965 {
471 req->fd = 1; /* mark request as delayed */ 966 *wd = (aio_wd)(long)SvIVX (rv);
472 continue; 967 *wdsv = SvREFCNT_inc_NN (rv);
968 *ptr = ".";
969 return; /* path set to "." */
473 } 970 }
474 else 971 else
475 { 972 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 } 973 }
496 974
497 return count; 975 *pathsv = newSVsv (path);
976 *ptr = SvPVbyte_nolen (*pathsv);
498} 977}
499 978
500static void *aio_proc(void *arg); 979static void ecb_noinline
501 980req_set_path1 (aio_req req, SV *path)
502static void start_thread (void)
503{ 981{
504 sigset_t fullsigset, oldsigset; 982 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} 983}
520 984
521static void req_send (aio_req req) 985static void ecb_noinline
986req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
522{ 987{
523 while (started < wanted && nreqs >= started) 988 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
524 start_thread ();
525 989
526 ++nreqs; 990 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 { 991 {
572 end_thread (); 992 case SVt_PVIO:
573 cur--; 993 case SVt_PVLV:
994 case SVt_PVGV:
995 req->type = type_fh;
996 req->sv1 = newSVsv (fh_or_path);
997 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
998 break;
999
1000 default:
1001 req->type = type_path;
1002 req_set_path1 (req, fh_or_path);
1003 break;
574 } 1004 }
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} 1005}
594 1006
595/*****************************************************************************/ 1007/*****************************************************************************/
596/* work around various missing functions */
597 1008
598#if !HAVE_PREADWRITE 1009static void
599# define pread aio_pread 1010ts_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{ 1011{
611 ssize_t res; 1012 ts->tv_sec = value;
612 off_t ooffset; 1013 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} 1014}
623 1015
624static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1016static NV
1017ts_get (const struct timespec *ts)
625{ 1018{
626 ssize_t res; 1019 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} 1020}
638#endif
639 1021
640#if !HAVE_FDATASYNC 1022/*****************************************************************************/
641# define fdatasync fsync
642#endif
643 1023
644#if !HAVE_READAHEAD 1024XS(boot_IO__AIO) ecb_cold;
645# define readahead aio_readahead
646 1025
647static ssize_t readahead (int fd, off_t offset, size_t count) 1026MODULE = IO::AIO PACKAGE = IO::AIO
648{
649 dBUF;
650 1027
651 while (count > 0) 1028PROTOTYPES: ENABLE
652 {
653 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
654 1029
655 pread (fd, aio_buf, len, offset); 1030BOOT:
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{ 1031{
673 struct dirent *e; 1032 static const struct {
674 int errorno; 1033 const char *name;
1034 IV iv;
1035 } *civ, const_iv[] = {
1036# define const_niv(name, value) { # name, (IV) value },
1037# define const_iv(name) { # name, (IV) name },
1038# define const_eio(name) { # name, (IV) EIO_ ## name },
675 1039
676 pthread_mutex_lock (&readdirlock); 1040 /* you have to re-run ./gendef0 after adding/removing any constants here */
1041 /* the first block can be undef if missing */
1042 const_iv (ENOSYS)
1043 const_iv (EXDEV)
1044 const_iv (EBADR)
677 1045
678 e = readdir (dirp); 1046 /* for lseek */
679 errorno = errno; 1047 const_iv (SEEK_DATA)
1048 const_iv (SEEK_HOLE)
680 1049
681 if (e) 1050 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
682 { 1051 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
683 *res = ent; 1052 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
684 strcpy (ent->d_name, e->d_name); 1053 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
685 } 1054 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
686 else 1055 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
687 *res = 0;
688 1056
689 pthread_mutex_unlock (&readdirlock); 1057 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1058 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1059 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1060 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1061 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
690 1062
691 errno = errorno; 1063 /* the second block will be 0 when missing */
692 return e ? 0 : -1; 1064 const_iv (O_ACCMODE)
693}
694#endif
695 1065
696/* sendfile always needs emulation */ 1066 const_iv (O_RDONLY)
697static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1067 const_iv (O_WRONLY)
698{ 1068 const_iv (O_RDWR)
699 ssize_t res; 1069 const_iv (O_CREAT)
1070 const_iv (O_TRUNC)
1071 const_iv (O_EXCL)
1072 const_iv (O_APPEND)
700 1073
701 if (!count) 1074 const_iv (O_ASYNC)
702 return 0; 1075 const_iv (O_DIRECT)
1076 const_iv (O_NOATIME)
703 1077
704#if HAVE_SENDFILE 1078 const_iv (O_CLOEXEC)
705# if __linux 1079 const_iv (O_NOCTTY)
706 res = sendfile (ofd, ifd, &offset, count); 1080 const_iv (O_NOFOLLOW)
1081 const_iv (O_NONBLOCK)
1082 const_iv (O_EXEC)
1083 const_iv (O_SEARCH)
1084 const_iv (O_DIRECTORY)
1085 const_iv (O_DSYNC)
1086 const_iv (O_RSYNC)
1087 const_iv (O_SYNC)
1088 const_iv (O_PATH)
1089 const_iv (O_TMPFILE)
1090 const_iv (O_TTY_INIT)
707 1091
708# elif __freebsd 1092 const_iv (S_IFIFO)
709 /* 1093 const_iv (S_IFCHR)
710 * Of course, the freebsd sendfile is a dire hack with no thoughts 1094 const_iv (S_IFBLK)
711 * wasted on making it similar to other I/O functions. 1095 const_iv (S_IFLNK)
712 */ 1096 const_iv (S_IFREG)
713 { 1097 const_iv (S_IFDIR)
714 off_t sbytes; 1098 const_iv (S_IFWHT)
715 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1099 const_iv (S_IFSOCK)
1100 const_iv (S_IFMT)
716 1101
717 if (res < 0 && sbytes) 1102 const_iv (ST_RDONLY)
718 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1103 const_iv (ST_NOSUID)
719 res = sbytes; 1104 const_iv (ST_NODEV)
1105 const_iv (ST_NOEXEC)
1106 const_iv (ST_SYNCHRONOUS)
1107 const_iv (ST_MANDLOCK)
1108 const_iv (ST_WRITE)
1109 const_iv (ST_APPEND)
1110 const_iv (ST_IMMUTABLE)
1111 const_iv (ST_NOATIME)
1112 const_iv (ST_NODIRATIME)
1113 const_iv (ST_RELATIME)
1114
1115 const_iv (PROT_NONE)
1116 const_iv (PROT_EXEC)
1117 const_iv (PROT_READ)
1118 const_iv (PROT_WRITE)
1119
1120 const_iv (MAP_PRIVATE)
1121 const_iv (MAP_SHARED)
1122 const_iv (MAP_FIXED)
1123 const_iv (MAP_ANONYMOUS)
1124
1125 /* linuxish */
1126 const_iv (MAP_LOCKED)
1127 const_iv (MAP_NORESERVE)
1128 const_iv (MAP_POPULATE)
1129 const_iv (MAP_NONBLOCK)
1130 const_iv (MAP_GROWSDOWN)
1131 const_iv (MAP_32BIT)
1132 const_iv (MAP_HUGETLB)
1133 const_iv (MAP_STACK)
1134
1135 const_iv (MREMAP_MAYMOVE)
1136 const_iv (MREMAP_FIXED)
1137
1138 const_iv (F_DUPFD_CLOEXEC)
1139
1140 const_iv (MSG_CMSG_CLOEXEC)
1141 const_iv (SOCK_CLOEXEC)
1142
1143 const_iv (F_OFD_GETLK)
1144 const_iv (F_OFD_SETLK)
1145 const_iv (F_OFD_GETLKW)
1146
1147 const_iv (FIFREEZE)
1148 const_iv (FITHAW)
1149 const_iv (FITRIM)
1150 const_iv (FICLONE)
1151 const_iv (FICLONERANGE)
1152 const_iv (FIDEDUPERANGE)
1153
1154 const_iv (FS_IOC_GETFLAGS)
1155 const_iv (FS_IOC_SETFLAGS)
1156 const_iv (FS_IOC_GETVERSION)
1157 const_iv (FS_IOC_SETVERSION)
1158 const_iv (FS_IOC_FIEMAP)
1159 const_iv (FS_IOC_FSGETXATTR)
1160 const_iv (FS_IOC_FSSETXATTR)
1161 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1162 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1163 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1164
1165 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1166
1167 const_iv (FS_SECRM_FL)
1168 const_iv (FS_UNRM_FL)
1169 const_iv (FS_COMPR_FL)
1170 const_iv (FS_SYNC_FL)
1171 const_iv (FS_IMMUTABLE_FL)
1172 const_iv (FS_APPEND_FL)
1173 const_iv (FS_NODUMP_FL)
1174 const_iv (FS_NOATIME_FL)
1175 const_iv (FS_DIRTY_FL)
1176 const_iv (FS_COMPRBLK_FL)
1177 const_iv (FS_NOCOMP_FL)
1178 const_iv (FS_ENCRYPT_FL)
1179 const_iv (FS_BTREE_FL)
1180 const_iv (FS_INDEX_FL)
1181 const_iv (FS_JOURNAL_DATA_FL)
1182 const_iv (FS_NOTAIL_FL)
1183 const_iv (FS_DIRSYNC_FL)
1184 const_iv (FS_TOPDIR_FL)
1185 const_iv (FS_FL_USER_MODIFIABLE)
1186
1187 const_iv (FS_XFLAG_REALTIME)
1188 const_iv (FS_XFLAG_PREALLOC)
1189 const_iv (FS_XFLAG_IMMUTABLE)
1190 const_iv (FS_XFLAG_APPEND)
1191 const_iv (FS_XFLAG_SYNC)
1192 const_iv (FS_XFLAG_NOATIME)
1193 const_iv (FS_XFLAG_NODUMP)
1194 const_iv (FS_XFLAG_RTINHERIT)
1195 const_iv (FS_XFLAG_PROJINHERIT)
1196 const_iv (FS_XFLAG_NOSYMLINKS)
1197 const_iv (FS_XFLAG_EXTSIZE)
1198 const_iv (FS_XFLAG_EXTSZINHERIT)
1199 const_iv (FS_XFLAG_NODEFRAG)
1200 const_iv (FS_XFLAG_FILESTREAM)
1201 const_iv (FS_XFLAG_DAX)
1202 const_iv (FS_XFLAG_HASATTR)
1203
1204 const_iv (FIEMAP_FLAG_SYNC)
1205 const_iv (FIEMAP_FLAG_XATTR)
1206 const_iv (FIEMAP_FLAGS_COMPAT)
1207 const_iv (FIEMAP_EXTENT_LAST)
1208 const_iv (FIEMAP_EXTENT_UNKNOWN)
1209 const_iv (FIEMAP_EXTENT_DELALLOC)
1210 const_iv (FIEMAP_EXTENT_ENCODED)
1211 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1212 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1213 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1214 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1215 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1216 const_iv (FIEMAP_EXTENT_MERGED)
1217 const_iv (FIEMAP_EXTENT_SHARED)
1218
1219 const_iv (SPLICE_F_MOVE)
1220 const_iv (SPLICE_F_NONBLOCK)
1221 const_iv (SPLICE_F_MORE)
1222 const_iv (SPLICE_F_GIFT)
1223
1224 const_iv (EFD_CLOEXEC)
1225 const_iv (EFD_NONBLOCK)
1226 const_iv (EFD_SEMAPHORE)
1227
1228 const_iv (CLOCK_REALTIME)
1229 const_iv (CLOCK_MONOTONIC)
1230 const_iv (CLOCK_BOOTTIME)
1231 const_iv (CLOCK_REALTIME_ALARM)
1232 const_iv (CLOCK_BOOTTIME_ALARM)
1233
1234 const_iv (TFD_NONBLOCK)
1235 const_iv (TFD_CLOEXEC)
1236
1237 const_iv (TFD_TIMER_ABSTIME)
1238 const_iv (TFD_TIMER_CANCEL_ON_SET)
1239
1240 /* these are libeio constants, and are independent of gendef0 */
1241 const_eio (SEEK_SET)
1242 const_eio (SEEK_CUR)
1243 const_eio (SEEK_END)
1244
1245 const_eio (MCL_FUTURE)
1246 const_eio (MCL_CURRENT)
1247
1248 const_eio (MS_ASYNC)
1249 const_eio (MS_INVALIDATE)
1250 const_eio (MS_SYNC)
1251
1252 const_eio (MT_MODIFY)
1253
1254 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1255 const_eio (SYNC_FILE_RANGE_WRITE)
1256 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1257
1258 const_eio (FALLOC_FL_KEEP_SIZE)
1259 const_eio (FALLOC_FL_PUNCH_HOLE)
1260 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1261 const_eio (FALLOC_FL_ZERO_RANGE)
1262 const_eio (FALLOC_FL_INSERT_RANGE)
1263 const_eio (FALLOC_FL_UNSHARE_RANGE)
1264
1265 const_eio (RENAME_NOREPLACE)
1266 const_eio (RENAME_EXCHANGE)
1267 const_eio (RENAME_WHITEOUT)
1268
1269 const_eio (READDIR_DENTS)
1270 const_eio (READDIR_DIRS_FIRST)
1271 const_eio (READDIR_STAT_ORDER)
1272 const_eio (READDIR_FOUND_UNKNOWN)
1273
1274 const_eio (DT_UNKNOWN)
1275 const_eio (DT_FIFO)
1276 const_eio (DT_CHR)
1277 const_eio (DT_DIR)
1278 const_eio (DT_BLK)
1279 const_eio (DT_REG)
1280 const_eio (DT_LNK)
1281 const_eio (DT_SOCK)
1282 const_eio (DT_WHT)
720 } 1283 };
721 1284
722# elif __hpux 1285 aio_stash = gv_stashpv ("IO::AIO" , 1);
723 res = sendfile (ofd, ifd, offset, count, 0, 0); 1286 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1287 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1288 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
724 1289
725# elif __solaris 1290 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
726 { 1291 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
727 struct sendfilevec vec;
728 size_t sbytes;
729 1292
730 vec.sfv_fd = ifd; 1293 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
731 vec.sfv_flag = 0;
732 vec.sfv_off = offset;
733 vec.sfv_len = count;
734 1294
735 res = sendfilev (ofd, &vec, 1, &sbytes); 1295 reinit ();
1296}
736 1297
737 if (res < 0 && sbytes) 1298void
1299reinit ()
1300 PROTOTYPE:
1301
1302void
1303max_poll_reqs (unsigned int nreqs)
1304 PROTOTYPE: $
1305 CODE:
1306 eio_set_max_poll_reqs (nreqs);
1307
1308void
1309max_poll_time (double nseconds)
1310 PROTOTYPE: $
1311 CODE:
1312 eio_set_max_poll_time (nseconds);
1313
1314void
1315min_parallel (unsigned int nthreads)
1316 PROTOTYPE: $
1317 CODE:
1318 eio_set_min_parallel (nthreads);
1319
1320void
1321max_parallel (unsigned int nthreads)
1322 PROTOTYPE: $
1323 CODE:
1324 eio_set_max_parallel (nthreads);
1325
1326void
1327max_idle (unsigned int nthreads)
1328 PROTOTYPE: $
1329 CODE:
1330 eio_set_max_idle (nthreads);
1331
1332void
1333idle_timeout (unsigned int seconds)
1334 PROTOTYPE: $
1335 CODE:
1336 eio_set_idle_timeout (seconds);
1337
1338void
1339max_outstanding (unsigned int maxreqs)
1340 PROTOTYPE: $
1341 CODE:
1342 max_outstanding = maxreqs;
1343
1344void
1345aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1346 PPCODE:
1347{
1348 dREQ;
1349
1350 req->type = EIO_WD_OPEN;
1351 req_set_path1 (req, pathname);
1352
1353 REQ_SEND;
1354}
1355
1356void
1357aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1358 PPCODE:
1359{
1360 dREQ;
1361
1362 req->type = EIO_OPEN;
1363 req_set_path1 (req, pathname);
1364 req->int1 = flags;
1365 req->int2 = mode;
1366
1367 REQ_SEND;
1368}
1369
1370void
1371aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1372 ALIAS:
1373 aio_fsync = EIO_FSYNC
1374 aio_fdatasync = EIO_FDATASYNC
1375 aio_syncfs = EIO_SYNCFS
1376 PPCODE:
1377{
1378 int fd = s_fileno_croak (fh, 0);
1379 dREQ;
1380
1381 req->type = ix;
1382 req->sv1 = newSVsv (fh);
1383 req->int1 = fd;
1384
1385 REQ_SEND;
1386}
1387
1388void
1389aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1390 PPCODE:
1391{
1392 int fd = s_fileno_croak (fh, 0);
1393 dREQ;
1394
1395 req->type = EIO_SYNC_FILE_RANGE;
1396 req->sv1 = newSVsv (fh);
1397 req->int1 = fd;
1398 req->offs = offset;
738 res = sbytes; 1399 req->size = nbytes;
739 } 1400 req->int2 = flags;
740 1401
741# endif 1402 REQ_SEND;
1403}
1404
1405void
1406aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1407 PPCODE:
1408{
1409 int fd = s_fileno_croak (fh, 0);
1410 dREQ;
1411
1412 req->type = EIO_FALLOCATE;
1413 req->sv1 = newSVsv (fh);
1414 req->int1 = fd;
1415 req->int2 = mode;
1416 req->offs = offset;
1417 req->size = len;
1418
1419 REQ_SEND;
1420}
1421
1422void
1423aio_close (SV *fh, SV *callback = &PL_sv_undef)
1424 PPCODE:
1425{
1426 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1427 int fd = s_fileno_croak (fh, 0);
1428 dREQ;
1429
1430 if (expect_false (close_fd < 0))
1431 {
1432 int pipefd [2];
1433
1434 if (
1435#ifdef _WIN32
1436 _pipe (pipefd, 1, _O_BINARY) < 0
742#else 1437#else
743 res = -1; 1438 pipe (pipefd) < 0
744 errno = ENOSYS; 1439 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
745#endif 1440#endif
746 1441 || 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 { 1442 )
768 if (cnt && !res) res = -1; 1443 abort (); /*D*/
769 break;
770 }
771 1444
772 cnt = write (ofd, aio_buf, cnt); 1445 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 } 1446 }
842 }
843 1447
844 errorno = errno; 1448 req->type = EIO_DUP2;
845 free (u); 1449 req->int1 = close_fd;
846 closedir (dirp); 1450 req->sv2 = newSVsv (fh);
1451 req->int2 = fd;
847 1452
848 if (errorno) 1453 REQ_SEND;
849 {
850 free (names);
851 errno = errorno;
852 res = -1;
853 }
854
855 *namesp = (void *)names;
856 return res;
857} 1454}
858 1455
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 1456void
1027min_parallel (nthreads) 1457aio_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: 1458 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: $$$;$
1051 PPCODE:
1052{ 1459{
1460 int fd = s_fileno_croak (fh, 0);
1053 dREQ; 1461 dREQ;
1054 1462
1055 req->type = REQ_OPEN; 1463 req->type = EIO_SEEK;
1056 req->data = newSVsv (pathname); 1464 req->sv1 = newSVsv (fh);
1057 req->dataptr = SvPVbyte_nolen (req->data); 1465 req->int1 = fd;
1058 req->fd = flags; 1466 req->offs = SvVAL64 (offset);
1059 req->mode = mode; 1467 req->int2 = whence;
1060 1468
1061 REQ_SEND; 1469 REQ_SEND;
1062} 1470}
1063 1471
1064void 1472void
1065aio_close (fh,callback=&PL_sv_undef) 1473aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1066 SV * fh
1067 SV * callback
1068 PROTOTYPE: $;$
1069 ALIAS: 1474 ALIAS:
1070 aio_close = REQ_CLOSE
1071 aio_fsync = REQ_FSYNC
1072 aio_fdatasync = REQ_FDATASYNC
1073 PPCODE:
1074{
1075 dREQ;
1076
1077 req->type = ix;
1078 req->fh = newSVsv (fh);
1079 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080
1081 REQ_SEND (req);
1082}
1083
1084void
1085aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1086 SV * fh
1087 UV offset
1088 UV length
1089 SV * data
1090 UV dataoffset
1091 SV * callback
1092 ALIAS:
1093 aio_read = REQ_READ 1475 aio_read = EIO_READ
1094 aio_write = REQ_WRITE 1476 aio_write = EIO_WRITE
1095 PROTOTYPE: $$$$$;$
1096 PPCODE: 1477 PPCODE:
1097{ 1478{
1098 aio_req req;
1099 STRLEN svlen; 1479 STRLEN svlen;
1480 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100 char *svptr = SvPVbyte (data, svlen); 1481 char *svptr = SvPVbyte (data, svlen);
1101 1482 UV len = SvUV (length);
1102 SvUPGRADE (data, SVt_PV);
1103 SvPOK_on (data);
1104 1483
1105 if (dataoffset < 0) 1484 if (dataoffset < 0)
1106 dataoffset += svlen; 1485 dataoffset += svlen;
1107 1486
1108 if (dataoffset < 0 || dataoffset > svlen) 1487 if (dataoffset < 0 || dataoffset > svlen)
1109 croak ("data offset outside of string"); 1488 croak ("dataoffset outside of data scalar");
1110 1489
1111 if (ix == REQ_WRITE) 1490 if (ix == EIO_WRITE)
1112 { 1491 {
1113 /* write: check length and adjust. */ 1492 /* write: check length and adjust. */
1114 if (length < 0 || length + dataoffset > svlen) 1493 if (!SvOK (length) || len + dataoffset > svlen)
1115 length = svlen - dataoffset; 1494 len = svlen - dataoffset;
1116 } 1495 }
1117 else 1496 else
1118 { 1497 {
1119 /* read: grow scalar as necessary */ 1498 /* read: check type and grow scalar as necessary */
1499 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1120 svptr = SvGROW (data, length + dataoffset); 1500 svptr = sv_grow (data, len + dataoffset + 1);
1501 else if (SvCUR (data) < len + dataoffset)
1502 croak ("length + dataoffset outside of scalar, and cannot grow");
1121 } 1503 }
1122
1123 if (length < 0)
1124 croak ("length must not be negative");
1125 1504
1126 { 1505 {
1127 dREQ; 1506 dREQ;
1128 1507
1129 req->type = ix; 1508 req->type = ix;
1130 req->fh = newSVsv (fh); 1509 req->sv1 = newSVsv (fh);
1131 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1510 req->int1 = fd;
1132 : IoOFP (sv_2io (fh))); 1511 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133 req->offset = offset; 1512 req->size = len;
1134 req->length = length;
1135 req->data = SvREFCNT_inc (data); 1513 req->sv2 = SvREFCNT_inc (data);
1136 req->dataptr = (char *)svptr + dataoffset; 1514 req->ptr2 = (char *)svptr + dataoffset;
1515 req->stroffset = dataoffset;
1137 1516
1138 if (!SvREADONLY (data)) 1517 if (!SvREADONLY (data))
1139 { 1518 {
1140 SvREADONLY_on (data); 1519 SvREADONLY_on (data);
1141 req->data2ptr = (void *)data; 1520 req->flags |= FLAG_SV2_RO_OFF;
1142 } 1521 }
1143 1522
1144 REQ_SEND; 1523 REQ_SEND;
1145 } 1524 }
1146} 1525}
1147 1526
1148void 1527void
1149aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1528aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1150 SV * out_fh 1529 ALIAS:
1151 SV * in_fh 1530 aio_ioctl = EIO_IOCTL
1152 UV in_offset 1531 aio_fcntl = EIO_FCNTL
1153 UV length
1154 SV * callback
1155 PROTOTYPE: $$$$;$
1156 PPCODE: 1532 PPCODE:
1157{ 1533{
1158 dREQ; 1534 int fd = s_fileno_croak (fh, 0);
1535 char *svptr;
1159 1536
1160 req->type = REQ_SENDFILE; 1537 if (SvPOK (arg) || !SvNIOK (arg))
1161 req->fh = newSVsv (out_fh);
1162 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163 req->fh2 = newSVsv (in_fh);
1164 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165 req->offset = in_offset;
1166 req->length = length;
1167
1168 REQ_SEND;
1169}
1170
1171void
1172aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1173 SV * fh
1174 UV offset
1175 IV length
1176 SV * callback
1177 PROTOTYPE: $$$;$
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 { 1538 {
1205 req_free (req); 1539 STRLEN svlen;
1206 croak ("out of memory during aio_req->statdata allocation"); 1540 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1207 } 1541#ifdef IOCPARM_LEN
1542 STRLEN need = IOCPARM_LEN (request);
1543#else
1544 STRLEN need = 256;
1545#endif
1208 1546
1209 if (SvPOK (fh_or_path)) 1547 if (svlen < need)
1210 { 1548 svptr = SvGROW (arg, need);
1211 req->type = ix;
1212 req->data = newSVsv (fh_or_path);
1213 req->dataptr = SvPVbyte_nolen (req->data);
1214 } 1549 }
1215 else 1550 else
1551 svptr = (char *)SvIV (arg);
1552
1216 { 1553 {
1554 dREQ;
1555
1217 req->type = REQ_FSTAT; 1556 req->type = ix;
1218 req->fh = newSVsv (fh_or_path); 1557 req->sv1 = newSVsv (fh);
1219 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1558 req->int1 = fd;
1559 req->int2 = (long)request;
1560 req->sv2 = SvREFCNT_inc (arg);
1561 req->ptr2 = svptr;
1562
1563 REQ_SEND;
1220 } 1564 }
1565}
1566
1567void
1568aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1569 ALIAS:
1570 aio_readlink = EIO_READLINK
1571 aio_realpath = EIO_REALPATH
1572 PPCODE:
1573{
1574 dREQ;
1575
1576 req->type = ix;
1577 req_set_path1 (req, pathname);
1221 1578
1222 REQ_SEND; 1579 REQ_SEND;
1223} 1580}
1224 1581
1225void 1582void
1226aio_unlink (pathname,callback=&PL_sv_undef) 1583aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1227 SV * pathname 1584 PPCODE:
1228 SV * callback 1585{
1586 int ifd = s_fileno_croak (in_fh , 0);
1587 int ofd = s_fileno_croak (out_fh, 1);
1588 dREQ;
1589
1590 req->type = EIO_SENDFILE;
1591 req->sv1 = newSVsv (out_fh);
1592 req->int1 = ofd;
1593 req->sv2 = newSVsv (in_fh);
1594 req->int2 = ifd;
1595 req->offs = in_offset;
1596 req->size = length;
1597
1598 REQ_SEND;
1599}
1600
1601void
1602aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1603 PPCODE:
1604{
1605 int fd = s_fileno_croak (fh, 0);
1606 dREQ;
1607
1608 req->type = EIO_READAHEAD;
1609 req->sv1 = newSVsv (fh);
1610 req->int1 = fd;
1611 req->offs = offset;
1612 req->size = length;
1613
1614 REQ_SEND;
1615}
1616
1617void
1618aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1229 ALIAS: 1619 ALIAS:
1620 aio_stat = EIO_STAT
1621 aio_lstat = EIO_LSTAT
1622 aio_statvfs = EIO_STATVFS
1623 PPCODE:
1624{
1625 dREQ;
1626
1627 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1628
1629 REQ_SEND;
1630}
1631
1632void
1633st_xtime ()
1634 ALIAS:
1635 st_atime = 1
1636 st_mtime = 2
1637 st_ctime = 4
1638 st_xtime = 7
1639 PPCODE:
1640 EXTEND (SP, 3);
1641 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1642 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1643 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1644
1645void
1646st_xtimensec ()
1647 ALIAS:
1648 st_atimensec = 1
1649 st_mtimensec = 2
1650 st_ctimensec = 4
1651 st_xtimensec = 7
1652 PPCODE:
1653 EXTEND (SP, 3);
1654 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1655 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1656 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1657
1658UV
1659major (UV dev)
1660 ALIAS:
1661 minor = 1
1662 CODE:
1663 RETVAL = ix ? minor (dev) : major (dev);
1664 OUTPUT:
1665 RETVAL
1666
1667UV
1668makedev (UV maj, UV min)
1669 CODE:
1670 RETVAL = makedev (maj, min);
1671 OUTPUT:
1672 RETVAL
1673
1674void
1675aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1676 PPCODE:
1677{
1678 dREQ;
1679
1680 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1681 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1682 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1683
1684 REQ_SEND;
1685}
1686
1687void
1688aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1689 PPCODE:
1690{
1691 dREQ;
1692
1693 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1694 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1695
1696 REQ_SEND;
1697}
1698
1699void
1700aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1701 PPCODE:
1702{
1703 dREQ;
1704
1705 req->int2 = mode;
1706 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1707
1708 REQ_SEND;
1709}
1710
1711void
1712aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1713 PPCODE:
1714{
1715 dREQ;
1716
1717 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1718 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1719 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1720
1721 REQ_SEND;
1722}
1723
1724void
1725aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1726 PPCODE:
1727{
1728 dREQ;
1729
1730 req->type = EIO_READDIR;
1731 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1732
1733 if (flags & EIO_READDIR_DENTS)
1734 req->int1 |= EIO_READDIR_CUSTOM2;
1735
1736 req_set_path1 (req, pathname);
1737
1738 REQ_SEND;
1739}
1740
1741void
1742aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1743 PPCODE:
1744{
1745 dREQ;
1746
1747 req->type = EIO_MKDIR;
1748 req->int2 = mode;
1749 req_set_path1 (req, pathname);
1750
1751 REQ_SEND;
1752}
1753
1754void
1755aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1756 ALIAS:
1230 aio_unlink = REQ_UNLINK 1757 aio_unlink = EIO_UNLINK
1231 aio_rmdir = REQ_RMDIR 1758 aio_rmdir = EIO_RMDIR
1232 aio_readdir = REQ_READDIR 1759 aio_readdir = EIO_READDIR
1233 PPCODE: 1760 PPCODE:
1234{ 1761{
1235 dREQ; 1762 dREQ;
1236 1763
1237 req->type = ix; 1764 req->type = ix;
1238 req->data = newSVsv (pathname); 1765 req_set_path1 (req, pathname);
1239 req->dataptr = SvPVbyte_nolen (req->data); 1766
1240
1241 REQ_SEND; 1767 REQ_SEND;
1242} 1768}
1243 1769
1244void 1770void
1245aio_link (oldpath,newpath,callback=&PL_sv_undef) 1771aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1246 SV * oldpath
1247 SV * newpath
1248 SV * callback
1249 ALIAS: 1772 ALIAS:
1250 aio_link = REQ_LINK 1773 aio_link = EIO_LINK
1251 aio_symlink = REQ_SYMLINK 1774 aio_symlink = EIO_SYMLINK
1252 aio_rename = REQ_RENAME 1775 aio_rename = EIO_RENAME
1253 PPCODE: 1776 PPCODE:
1254{ 1777{
1778 eio_wd wd2 = 0;
1255 dREQ; 1779 dREQ;
1256 1780
1257 req->type = ix; 1781 req->type = ix;
1258 req->fh = newSVsv (oldpath); 1782 req_set_path1 (req, oldpath);
1259 req->data2ptr = SvPVbyte_nolen (req->fh); 1783 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1260 req->data = newSVsv (newpath); 1784 req->int3 = (long)wd2;
1261 req->dataptr = SvPVbyte_nolen (req->data);
1262 1785
1263 REQ_SEND; 1786 REQ_SEND;
1264} 1787}
1265 1788
1266void 1789void
1267aio_sleep (delay,callback=&PL_sv_undef) 1790aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1268 double delay
1269 SV * callback
1270 PPCODE: 1791 PPCODE:
1271{ 1792{
1793 eio_wd wd2 = 0;
1272 dREQ; 1794 dREQ;
1273 1795
1274 req->type = REQ_SLEEP; 1796 req->type = EIO_RENAME;
1275 req->fd = delay < 0. ? 0 : delay; 1797 req_set_path1 (req, oldpath);
1276 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1798 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1277 1799 req->int2 = flags;
1800 req->int3 = (long)wd2;
1801
1278 REQ_SEND; 1802 REQ_SEND;
1279} 1803}
1280 1804
1281void 1805void
1282aio_group (callback=&PL_sv_undef) 1806aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1283 SV * callback 1807 PPCODE:
1284 PROTOTYPE: ;$ 1808{
1809 dREQ;
1810
1811 req->type = EIO_MKNOD;
1812 req->int2 = (mode_t)mode;
1813 req->offs = dev;
1814 req_set_path1 (req, pathname);
1815
1816 REQ_SEND;
1817}
1818
1819void
1820aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1821 ALIAS:
1822 aio_mtouch = EIO_MTOUCH
1823 aio_msync = EIO_MSYNC
1285 PPCODE: 1824 PPCODE:
1286{ 1825{
1826 STRLEN svlen;
1827 char *svptr = SvPVbyte (data, svlen);
1828 UV len = SvUV (length);
1829
1830 if (flags < 0)
1831 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1832
1833 if (offset < 0)
1834 offset += svlen;
1835
1836 if (offset < 0 || offset > svlen)
1837 croak ("offset outside of scalar");
1838
1839 if (!SvOK (length) || len + offset > svlen)
1840 len = svlen - offset;
1841
1842 {
1843 dREQ;
1844
1845 req->type = ix;
1846 req->sv2 = SvREFCNT_inc (data);
1847 req->ptr2 = (char *)svptr + offset;
1848 req->size = len;
1849 req->int1 = flags;
1850
1851 REQ_SEND;
1852 }
1853}
1854
1855void
1856aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1857 PPCODE:
1858{
1859 STRLEN svlen;
1860 char *svptr = SvPVbyte (data, svlen);
1861 UV len = SvUV (length);
1862
1863 if (offset < 0)
1864 offset += svlen;
1865
1866 if (offset < 0 || offset > svlen)
1867 croak ("offset outside of scalar");
1868
1869 if (!SvOK (length) || len + offset > svlen)
1870 len = svlen - offset;
1871
1872 {
1873 dREQ;
1874
1875 req->type = EIO_MLOCK;
1876 req->sv2 = SvREFCNT_inc (data);
1877 req->ptr2 = (char *)svptr + offset;
1878 req->size = len;
1879
1880 REQ_SEND;
1881 }
1882}
1883
1884void
1885aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1886 PPCODE:
1887{
1888 dREQ;
1889
1890 req->type = EIO_MLOCKALL;
1891 req->int1 = flags;
1892
1893 REQ_SEND;
1894}
1895
1896void
1897aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1898 PPCODE:
1899{
1900 int fd = s_fileno_croak (fh, 0);
1287 dREQ; 1901 dREQ;
1288 1902
1289 req->type = REQ_GROUP; 1903 req->type = EIO_CUSTOM;
1290 req_send (req); 1904 req->sv1 = newSVsv (fh);
1905 req->int1 = fd;
1291 1906
1292 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1907 req->feed = fiemap;
1293} 1908#if HAVE_FIEMAP
1909 /* keep our fingers crossed that the next two types are 64 bit */
1910 req->offs = start;
1911 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1912 req->int2 = flags;
1913 req->int3 = SvOK (count) ? SvIV (count) : -1;
1914#endif
1294 1915
1916 REQ_SEND;
1917}
1918
1295void 1919void
1296aio_nop (callback=&PL_sv_undef) 1920aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1297 SV * callback 1921 PPCODE:
1922{
1923 char *svptr = 0;
1924
1925 sv_clear_foreign (data);
1926
1927 if (length) /* known length, directly read into scalar */
1928 {
1929 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1930 svptr = sv_grow (data, length + 1);
1931 else if (SvCUR (data) < length)
1932 croak ("length outside of scalar, and cannot grow");
1933 else
1934 svptr = SvPVbyte_nolen (data);
1935 }
1936
1937 {
1938 dREQ;
1939
1940 req->type = EIO_SLURP;
1941 req_set_path1 (req, pathname);
1942 req->offs = offset;
1943 req->size = length;
1944 req->sv2 = SvREFCNT_inc (data);
1945 req->ptr2 = svptr;
1946
1947 if (!SvREADONLY (data))
1948 {
1949 SvREADONLY_on (data);
1950 req->flags |= FLAG_SV2_RO_OFF;
1951 }
1952
1953 REQ_SEND;
1954 }
1955}
1956
1957void
1958aio_busy (double delay, SV *callback = &PL_sv_undef)
1298 PPCODE: 1959 PPCODE:
1299{ 1960{
1300 dREQ; 1961 dREQ;
1301 1962
1302 req->type = REQ_NOP; 1963 req->type = EIO_BUSY;
1964 req->nv1 = delay < 0. ? 0. : delay;
1303 1965
1304 REQ_SEND; 1966 REQ_SEND;
1305} 1967}
1306 1968
1307void 1969void
1308aioreq_pri (int pri = DEFAULT_PRI) 1970aio_group (SV *callback = &PL_sv_undef)
1309 CODE: 1971 PPCODE:
1972{
1973 dREQ;
1974
1975 req->type = EIO_GROUP;
1976
1977 PUTBACK;
1978 req_submit (req);
1979 SPAGAIN;
1980
1981 XPUSHs (req_sv (req, aio_grp_stash));
1982}
1983
1984void
1985aio_nop (SV *callback = &PL_sv_undef)
1986 ALIAS:
1987 aio_nop = EIO_NOP
1988 aio_sync = EIO_SYNC
1989 PPCODE:
1990{
1991 dREQ;
1992
1993 req->type = ix;
1994
1995 REQ_SEND;
1996}
1997
1998int
1999aioreq_pri (int pri = NO_INIT)
2000 CODE:
2001 RETVAL = next_pri;
2002 if (items > 0)
2003 {
1310 if (pri < PRI_MIN) pri = PRI_MIN; 2004 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311 if (pri > PRI_MAX) pri = PRI_MAX; 2005 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312 next_pri = pri + PRI_BIAS; 2006 next_pri = pri;
2007 }
2008 OUTPUT:
2009 RETVAL
1313 2010
1314void 2011void
1315aioreq_nice (int nice = 0) 2012aioreq_nice (int nice = 0)
1316 CODE: 2013 CODE:
1317 nice = next_pri - nice; 2014 nice = next_pri - nice;
1318 if (nice < PRI_MIN) nice = PRI_MIN; 2015 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1319 if (nice > PRI_MAX) nice = PRI_MAX; 2016 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1320 next_pri = nice + PRI_BIAS; 2017 next_pri = nice;
1321 2018
1322void 2019void
1323flush () 2020flush ()
1324 PROTOTYPE:
1325 CODE: 2021 CODE:
1326 while (nreqs) 2022 while (eio_nreqs ())
1327 { 2023 {
1328 poll_wait (); 2024 poll_wait ();
1329 poll_cb (); 2025 poll_cb ();
1330 } 2026 }
1331 2027
1332void 2028int
1333poll() 2029poll ()
1334 PROTOTYPE:
1335 CODE: 2030 CODE:
1336 if (nreqs)
1337 {
1338 poll_wait (); 2031 poll_wait ();
1339 poll_cb (); 2032 RETVAL = poll_cb ();
1340 }
1341
1342int
1343poll_fileno()
1344 PROTOTYPE:
1345 CODE:
1346 RETVAL = respipe [0];
1347 OUTPUT: 2033 OUTPUT:
1348 RETVAL 2034 RETVAL
1349 2035
1350int 2036int
2037poll_fileno ()
2038 CODE:
2039 RETVAL = s_epipe_fd (&respipe);
2040 OUTPUT:
2041 RETVAL
2042
2043int
1351poll_cb(...) 2044poll_cb (...)
1352 PROTOTYPE: 2045 PROTOTYPE:
1353 CODE: 2046 CODE:
1354 RETVAL = poll_cb (); 2047 RETVAL = poll_cb ();
1355 OUTPUT: 2048 OUTPUT:
1356 RETVAL 2049 RETVAL
1357 2050
1358void 2051void
1359poll_wait() 2052poll_wait ()
1360 PROTOTYPE:
1361 CODE: 2053 CODE:
1362 if (nreqs)
1363 poll_wait (); 2054 poll_wait ();
1364 2055
1365int 2056int
1366nreqs() 2057nreqs ()
1367 PROTOTYPE:
1368 CODE: 2058 CODE:
1369 RETVAL = nreqs; 2059 RETVAL = eio_nreqs ();
1370 OUTPUT: 2060 OUTPUT:
1371 RETVAL 2061 RETVAL
1372 2062
2063int
2064nready ()
2065 CODE:
2066 RETVAL = eio_nready ();
2067 OUTPUT:
2068 RETVAL
2069
2070int
2071npending ()
2072 CODE:
2073 RETVAL = eio_npending ();
2074 OUTPUT:
2075 RETVAL
2076
2077int
2078nthreads ()
2079 CODE:
2080 RETVAL = eio_nthreads ();
2081 OUTPUT:
2082 RETVAL
2083
2084int
2085fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2086 CODE:
2087 RETVAL = posix_fadvise (fh, offset, length, advice);
2088 OUTPUT:
2089 RETVAL
2090
2091IV
2092sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2093 CODE:
2094 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2095 OUTPUT:
2096 RETVAL
2097
2098void
2099mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2100 PPCODE:
2101 sv_clear_foreign (scalar);
2102{
2103 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2104 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2105 if (addr == (void *)-1)
2106 XSRETURN_NO;
2107
2108 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2109
2110 if (!(prot & PROT_WRITE))
2111 SvREADONLY_on (scalar);
2112
2113 XSRETURN_YES;
2114}
2115
2116void
2117munmap (SV *scalar)
2118 CODE:
2119 sv_clear_foreign (scalar);
2120
2121SV *
2122mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2123 CODE:
2124{
2125 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2126 void *new;
2127
2128 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2129 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2130
2131 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2132
2133 RETVAL = &PL_sv_no;
2134
2135 if (new != (void *)-1)
2136 {
2137 RETVAL = new == (void *)mg->mg_ptr
2138 ? newSVpvn ("0 but true", 10)
2139 : &PL_sv_yes;
2140
2141 mg->mg_ptr = (char *)new;
2142 mg->mg_obj = (SV *)new_length;
2143
2144 SvPVX (scalar) = mg->mg_ptr;
2145 SvCUR_set (scalar, new_length);
2146 }
2147}
2148 OUTPUT:
2149 RETVAL
2150
2151int
2152madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2153 ALIAS:
2154 mprotect = 1
2155 CODE:
2156{
2157 STRLEN svlen;
2158 void *addr = SvPVbyte (scalar, svlen);
2159 STRLEN len = SvUV (length);
2160
2161 if (offset < 0)
2162 offset += svlen;
2163
2164 if (offset < 0 || offset > svlen)
2165 croak ("offset outside of scalar");
2166
2167 if (!SvOK (length) || len + offset > svlen)
2168 len = svlen - offset;
2169
2170 addr = (void *)(((intptr_t)addr) + offset);
2171 eio_page_align (&addr, &len);
2172
2173 switch (ix)
2174 {
2175 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2176 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2177 }
2178}
2179 OUTPUT:
2180 RETVAL
2181
2182int
2183munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2184 CODE:
2185{
2186 STRLEN svlen;
2187 void *addr = SvPVbyte (scalar, svlen);
2188 size_t len = SvUV (length);
2189
2190 if (offset < 0)
2191 offset += svlen;
2192
2193 if (offset < 0 || offset > svlen)
2194 croak ("offset outside of scalar");
2195
2196 if (!SvOK (length) || len + offset > svlen)
2197 len = svlen - offset;
2198
2199 addr = (void *)(((intptr_t)addr) + offset);
2200 eio_page_align (&addr, &len);
2201#if _POSIX_MEMLOCK_RANGE
2202 RETVAL = munlock (addr, len);
2203#else
2204 RETVAL = EIO_ENOSYS ();
2205#endif
2206}
2207 OUTPUT:
2208 RETVAL
2209
2210int
2211munlockall ()
2212 CODE:
2213#if _POSIX_MEMLOCK
2214 munlockall ();
2215#else
2216 RETVAL = EIO_ENOSYS ();
2217#endif
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2223 CODE:
2224{
2225#if HAVE_LINUX_SPLICE
2226 loff_t off_in_, off_out_;
2227 RETVAL = splice (
2228 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2229 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2230 length, flags
2231 );
2232#else
2233 RETVAL = EIO_ENOSYS ();
2234#endif
2235}
2236 OUTPUT:
2237 RETVAL
2238
2239int
2240tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2241 CODE:
2242#if HAVE_LINUX_SPLICE
2243 RETVAL = tee (rfh, wfh, length, flags);
2244#else
2245 RETVAL = EIO_ENOSYS ();
2246#endif
2247 OUTPUT:
2248 RETVAL
2249
2250int
2251pipesize (aio_rfd rfh, int new_size = -1)
2252 PROTOTYPE: $;$
2253 CODE:
2254#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2255 if (new_size >= 0)
2256 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2257 else
2258 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2259#else
2260 errno = ENOSYS;
2261 RETVAL = -1;
2262#endif
2263 OUTPUT:
2264 RETVAL
2265
2266void
2267pipe2 (int flags = 0)
2268 PROTOTYPE: ;$
2269 PPCODE:
2270{
2271 int fd[2];
2272 int res;
2273
2274 if (flags)
2275#if HAVE_PIPE2
2276 res = pipe2 (fd, flags);
2277#else
2278 res = (errno = ENOSYS, -1);
2279#endif
2280 else
2281 res = pipe (fd);
2282
2283 if (!res)
2284 {
2285 EXTEND (SP, 2);
2286 PUSHs (newmortalFH (fd[0], O_RDONLY));
2287 PUSHs (newmortalFH (fd[1], O_WRONLY));
2288 }
2289}
2290
2291void
2292eventfd (unsigned int initval = 0, int flags = 0)
2293 PPCODE:
2294{
2295 int fd;
2296#if HAVE_EVENTFD
2297 fd = eventfd (initval, flags);
2298#else
2299 fd = (errno = ENOSYS, -1);
2300#endif
2301
2302 XPUSHs (newmortalFH (fd, O_RDWR));
2303}
2304
2305void
2306timerfd_create (int clockid, int flags = 0)
2307 PPCODE:
2308{
2309 int fd;
2310#if HAVE_TIMERFD
2311 fd = timerfd_create (clockid, flags);
2312#else
2313 fd = (errno = ENOSYS, -1);
2314#endif
2315
2316 XPUSHs (newmortalFH (fd, O_RDWR));
2317}
2318
2319void
2320timerfd_settime (SV *fh, int flags, NV interval, NV value)
2321 PPCODE:
2322{
2323 int fd = s_fileno_croak (fh, 0);
2324#if HAVE_TIMERFD
2325 int res;
2326 struct itimerspec its, ots;
2327
2328 ts_set (&its.it_interval, interval);
2329 ts_set (&its.it_value , value);
2330 res = timerfd_settime (fd, flags, &its, &ots);
2331
2332 if (!res)
2333 {
2334 EXTEND (SP, 2);
2335 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2336 PUSHs (newSVnv (ts_get (&ots.it_value)));
2337 }
2338#else
2339 errno = ENOSYS;
2340#endif
2341}
2342
2343void
2344timerfd_gettime (SV *fh)
2345 PPCODE:
2346{
2347 int fd = s_fileno_croak (fh, 0);
2348#if HAVE_TIMERFD
2349 int res;
2350 struct itimerspec ots;
2351 res = timerfd_gettime (fd, &ots);
2352
2353 if (!res)
2354 {
2355 EXTEND (SP, 2);
2356 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2357 PUSHs (newSVnv (ts_get (&ots.it_value)));
2358 }
2359#else
2360 errno = ENOSYS;
2361#endif
2362}
2363
2364UV
2365get_fdlimit ()
2366 CODE:
2367#if HAVE_RLIMITS
2368 struct rlimit rl;
2369 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2370 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2371#endif
2372 XSRETURN_UNDEF;
2373 OUTPUT:
2374 RETVAL
2375
2376void
2377min_fdlimit (UV limit = 0x7fffffffU)
2378 CODE:
2379{
2380#if HAVE_RLIMITS
2381 struct rlimit rl;
2382 rlim_t orig_rlim_max;
2383 UV bit;
2384
2385 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2386 goto fail;
2387
2388 if (rl.rlim_cur == RLIM_INFINITY)
2389 XSRETURN_YES;
2390
2391 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2392
2393 if (rl.rlim_cur < limit)
2394 {
2395 rl.rlim_cur = limit;
2396
2397 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2398 rl.rlim_max = rl.rlim_cur;
2399 }
2400
2401 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2402 XSRETURN_YES;
2403
2404 if (errno == EPERM)
2405 {
2406 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2407 /* our limit overflows a system-wide limit */
2408 /* try an adaptive algorithm, but do not lower the hardlimit */
2409 rl.rlim_max = 0;
2410 for (bit = 0x40000000U; bit; bit >>= 1)
2411 {
2412 rl.rlim_max |= bit;
2413 rl.rlim_cur = rl.rlim_max;
2414
2415 /* nevr decrease the hard limit */
2416 if (rl.rlim_max < orig_rlim_max)
2417 break;
2418
2419 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2420 rl.rlim_max &= ~bit; /* too high, remove bit again */
2421 }
2422
2423 /* now, raise the soft limit to the max permitted */
2424 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2425 {
2426 rl.rlim_cur = rl.rlim_max;
2427 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2428 errno = EPERM;
2429 }
2430 }
2431#endif
2432 fail:
2433 XSRETURN_UNDEF;
2434}
2435
2436void _on_next_submit (SV *cb)
2437 CODE:
2438 SvREFCNT_dec (on_next_submit);
2439 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2440
1373PROTOTYPES: DISABLE 2441PROTOTYPES: DISABLE
2442
2443MODULE = IO::AIO PACKAGE = IO::AIO::WD
2444
2445BOOT:
2446{
2447 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2448 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2449}
2450
2451void
2452DESTROY (SV *self)
2453 CODE:
2454{
2455 aio_wd wd = SvAIO_WD (self);
2456#if HAVE_AT
2457 {
2458 SV *callback = &PL_sv_undef;
2459 dREQ; /* clobbers next_pri :/ */
2460 next_pri = req->pri; /* restore next_pri */
2461 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2462 req->type = EIO_WD_CLOSE;
2463 req->wd = wd;
2464 REQ_SEND;
2465 }
2466#else
2467 eio_wd_close_sync (wd);
2468#endif
2469}
1374 2470
1375MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2471MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376 2472
1377void 2473void
1378cancel (aio_req_ornot req) 2474cancel (aio_req_ornot req)
1379 CODE: 2475 CODE:
1380 req_cancel (req); 2476 eio_cancel (req);
1381 2477
1382void 2478void
1383cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2479cb (aio_req_ornot req, SV *callback = NO_INIT)
1384 CODE: 2480 PPCODE:
2481{
2482 if (GIMME_V != G_VOID)
2483 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2484
2485 if (items > 1)
2486 {
2487 SV *cb_cv = get_cb (callback);
2488
1385 SvREFCNT_dec (req->callback); 2489 SvREFCNT_dec (req->callback);
1386 req->callback = newSVsv (callback); 2490 req->callback = SvREFCNT_inc (cb_cv);
2491 }
2492}
1387 2493
1388MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2494MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1389 2495
1390void 2496void
1391add (aio_req grp, ...) 2497add (aio_req grp, ...)
1392 PPCODE: 2498 PPCODE:
1393{ 2499{
1394 int i; 2500 int i;
1395 aio_req req;
1396 2501
1397 if (grp->fd == 2) 2502 if (grp->int1 == 2)
1398 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2503 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399 2504
1400 for (i = 1; i < items; ++i ) 2505 for (i = 1; i < items; ++i )
1401 { 2506 {
2507 aio_req req;
2508
1402 if (GIMME_V != G_VOID) 2509 if (GIMME_V != G_VOID)
1403 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2510 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1404 2511
1405 req = SvAIO_REQ (ST (i)); 2512 req = SvAIO_REQ (ST (i));
1406 2513
1407 if (req) 2514 if (req)
1408 { 2515 eio_grp_add (grp, req);
1409 ++grp->length;
1410 req->grp = grp;
1411
1412 req->grp_prev = 0;
1413 req->grp_next = grp->grp_first;
1414
1415 if (grp->grp_first)
1416 grp->grp_first->grp_prev = req;
1417
1418 grp->grp_first = req;
1419 }
1420 } 2516 }
1421} 2517}
2518
2519void
2520cancel_subs (aio_req_ornot req)
2521 CODE:
2522 req_cancel_subs (req);
1422 2523
1423void 2524void
1424result (aio_req grp, ...) 2525result (aio_req grp, ...)
1425 CODE: 2526 CODE:
1426{ 2527{
1427 int i; 2528 int i;
2529 AV *av;
2530
2531 grp->errorno = errno;
2532
1428 AV *av = newAV (); 2533 av = newAV ();
2534 av_extend (av, items - 1);
1429 2535
1430 for (i = 1; i < items; ++i ) 2536 for (i = 1; i < items; ++i )
1431 av_push (av, newSVsv (ST (i))); 2537 av_push (av, newSVsv (ST (i)));
1432 2538
1433 SvREFCNT_dec (grp->data); 2539 SvREFCNT_dec (grp->sv1);
1434 grp->data = (SV *)av; 2540 grp->sv1 = (SV *)av;
1435} 2541}
2542
2543void
2544errno (aio_req grp, int errorno = errno)
2545 CODE:
2546 grp->errorno = errorno;
1436 2547
1437void 2548void
1438limit (aio_req grp, int limit) 2549limit (aio_req grp, int limit)
1439 CODE: 2550 CODE:
1440 grp->fd2 = limit; 2551 eio_grp_limit (grp, limit);
1441 aio_grp_feed (grp);
1442 2552
1443void 2553void
1444feed (aio_req grp, SV *callback=&PL_sv_undef) 2554feed (aio_req grp, SV *callback = &PL_sv_undef)
1445 CODE: 2555 CODE:
1446{ 2556{
1447 SvREFCNT_dec (grp->fh2); 2557 SvREFCNT_dec (grp->sv2);
1448 grp->fh2 = newSVsv (callback); 2558 grp->sv2 = newSVsv (callback);
2559 grp->feed = aio_grp_feed;
1449 2560
1450 if (grp->fd2 <= 0) 2561 if (grp->int2 <= 0)
1451 grp->fd2 = 2; 2562 grp->int2 = 2;
1452 2563
1453 aio_grp_feed (grp); 2564 eio_grp_limit (grp, grp->int2);
1454} 2565}
1455 2566

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