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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 1.262 by root, Sun Aug 12 05:21:35 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 _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33# if __linux
34# include <sys/sendfile.h>
35# elif __freebsd
36# include <sys/socket.h>
37# include <sys/uio.h> 24# include <sys/mman.h>
38# 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
39# include <sys/socket.h> 89 #include <sys/time.h>
40# elif __solaris /* not yet */
41# 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
42# else 178# else
43# error sendfile support requested but not available 179# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44# endif 180# endif
45#endif 181#endif
46 182
47/* used for struct dirent, AIX doesn't provide it */ 183#ifndef makedev
48#ifndef NAME_MAX 184# define makedev(maj,min) (((maj) << 8) | (min))
49# define NAME_MAX 4096
50#endif 185#endif
51 186#ifndef major
52#if __ia64 187# 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 188#endif
189#ifndef minor
190# define minor(dev) ((dev) & 0xff)
191#endif
59 192
60/* buffer size for various temporary buffers */ 193#if PAGESIZE <= 0
61#define AIO_BUFSIZE 65536 194# define PAGESIZE sysconf (_SC_PAGESIZE)
195#endif
62 196
63#define dBUF \ 197/*****************************************************************************/
64 char *aio_buf = malloc (AIO_BUFSIZE); \ 198
65 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
66 return -1; 232 return 0;
233}
67 234
68#define fBUF free (aio_buf) 235static MGVTBL mmap_vtbl = {
69 236 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}; 237};
83 238
84#define AIO_REQ_KLASS "IO::AIO::REQ" 239static int ecb_cold
85#define AIO_GRP_KLASS "IO::AIO::GRP" 240sysfree_free (pTHX_ SV *sv, MAGIC *mg)
86
87typedef struct aio_cb
88{ 241{
89 struct aio_cb *volatile next; 242 free (mg->mg_ptr);
243 mg->mg_obj = 0; /* just in case */
90 244
91 SV *data, *callback; 245 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;
98 246
99 STRLEN dataoffset; 247 if (SvPVX (sv) != mg->mg_ptr)
100 int type; 248 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
101 int fd, fd2;
102 int errorno;
103 mode_t mode; /* open */
104 249
105 unsigned char flags; 250 SvCUR_set (sv, 0);
106 unsigned char pri; 251 SvPVX (sv) = 0;
252 SvOK_off (sv);
107 253
108 SV *self; /* the perl counterpart of this request, if any */ 254 return 0;
109 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 255}
110} aio_cb;
111 256
112enum { 257static MGVTBL sysfree_vtbl = {
113 FLAG_CANCELLED = 0x01, 258 0, 0, 0, 0, sysfree_free
114}; 259};
115 260
116typedef aio_cb *aio_req; 261/*****************************************************************************/
117typedef aio_cb *aio_req_ornot;
118 262
119enum { 263/* helper: set scalar to foreign ptr with custom free */
120 PRI_MIN = -4, 264static void
121 PRI_MAX = 4, 265sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
266{
267 sv_force_normal (sv);
122 268
123 DEFAULT_PRI = 0, 269 /* we store the length in mg_obj, as namlen is I32 :/ */
124 PRI_BIAS = -PRI_MIN, 270 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
125 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 271 ->mg_obj = (SV *)length;
126};
127 272
128static int next_pri = DEFAULT_PRI + PRI_BIAS; 273 SvUPGRADE (sv, SVt_PV); /* nop... */
129 274
130static int started, wanted; 275 if (SvLEN (sv))
131static volatile int nreqs; 276 Safefree (SvPVX (sv));
132static int max_outstanding = 1<<30;
133static int respipe [2];
134 277
135#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 278 SvPVX (sv) = (char *)addr;
136# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 279 SvCUR_set (sv, length);
137#else 280 SvLEN_set (sv, 0);
138# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 281 SvPOK_only (sv);
139#endif 282}
140 283
141static pthread_mutex_t reslock = AIO_MUTEX_INIT; 284static void
142static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 285sv_clear_foreign (SV *sv)
143static 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}
144 291
145/* 292/*****************************************************************************/
146 * a somewhat faster data structure might be nice, but 293
147 * with 8 priorities this actually needs <20 insns 294/* defines all sorts of constants to 0 unless they are already defined */
148 * 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.
149 */ 343 */
150typedef struct {
151 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
152 int size;
153} reqq;
154 344
155static reqq req_queue; 345 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
156static reqq res_queue;
157 346
158int reqq_push (reqq *q, aio_req req) 347 for (;;)
159{
160 int pri = req->pri;
161 req->next = 0;
162
163 if (q->qe[pri])
164 { 348 {
165 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) */
166 q->qe[pri] = req; 350 char scratch[3072];
167 } 351 struct fiemap *incmap = (struct fiemap *)scratch;
168 else
169 q->qe[pri] = q->qs[pri] = req;
170 352
171 return q->size++; 353 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
172} 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);
173 358
174aio_req reqq_shift (reqq *q) 359 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
175{
176 int pri;
177
178 if (!q->size)
179 return 0; 360 return;
180 361
181 --q->size; 362 if (!incmap->fm_mapped_extents)
363 goto done;
182 364
183 for (pri = NUM_PRI; pri--; ) 365 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
184 { 366 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
185 aio_req req = q->qs[pri]; 367 errno = ENOMEM;
186
187 if (req) 368 if (!fiemap)
369 return;
370
371 req->ptr1 = fiemap;
372
373 for (count = 0; count < incmap->fm_mapped_extents; ++count)
188 { 374 {
189 if (!(q->qs[pri] = req->next)) 375 struct fiemap_extent *e = incmap->fm_extents + count;
190 q->qe[pri] = 0;
191 376
192 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
193 } 385 }
194 } 386 }
195 387
196 abort (); 388done:
197} 389 req->result = 0;
198 390
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);
199static void req_invoke (aio_req req); 413static void req_cancel (aio_req req);
200static 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}
201 428
202/* must be called at most once */ 429/* must be called at most once */
203static SV *req_sv (aio_req req, const char *klass) 430static SV *
431req_sv (aio_req req, HV *stash)
204{ 432{
205 if (!req->self) 433 if (!req->self)
206 { 434 {
207 req->self = (SV *)newHV (); 435 req->self = (SV *)newHV ();
208 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 436 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
209 } 437 }
210 438
211 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 439 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
212} 440}
213 441
214static 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)
215{ 450{
216 MAGIC *mg; 451 MAGIC *mg;
217 452
218 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")))
219 croak ("object of class " AIO_REQ_KLASS " expected"); 458 croak ("object of class IO::AIO::REQ expected");
220 459
221 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 460 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
222 461
223 return mg ? (aio_req)mg->mg_ptr : 0; 462 return mg ? (aio_req)mg->mg_ptr : 0;
224} 463}
225 464
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
226static void aio_grp_feed (aio_req grp) 502aio_grp_feed (aio_req grp)
227{ 503{
228 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 504 if (grp->sv2 && SvOK (grp->sv2))
229 { 505 {
230 int old_len = grp->length;
231
232 if (grp->fh2 && SvOK (grp->fh2))
233 {
234 dSP; 506 dSP;
235 507
236 ENTER; 508 ENTER;
237 SAVETMPS; 509 SAVETMPS;
238 PUSHMARK (SP); 510 PUSHMARK (SP);
239 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 511 XPUSHs (req_sv (grp, aio_grp_stash));
240 PUTBACK; 512 PUTBACK;
241 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 513 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242 SPAGAIN; 514 SPAGAIN;
243 FREETMPS; 515 FREETMPS;
244 LEAVE; 516 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 } 517 }
255} 518}
256 519
257static void aio_grp_dec (aio_req grp) 520static void
521req_submit (eio_req *req)
258{ 522{
259 --grp->length; 523 eio_submit (req);
260 524
261 /* call feeder, if applicable */ 525 if (expect_false (on_next_submit))
262 aio_grp_feed (grp);
263
264 /* finish, if done */
265 if (!grp->length && grp->fd)
266 { 526 {
267 req_invoke (grp); 527 dSP;
268 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);
269 } 535 }
270} 536}
271 537
272static void poll_wait () 538static int
539req_invoke (eio_req *req)
273{ 540{
274 fd_set rfd; 541 if (req->flags & FLAG_SV2_RO_OFF)
542 SvREADONLY_off (req->sv2);
275 543
276 while (nreqs) 544 if (!EIO_CANCELLED (req) && req->callback)
277 { 545 {
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; 546 dSP;
300 547 static SV *sv_result_cache; /* caches the result integer SV */
301 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 548 SV *sv_result;
302 {
303 errno = req->errorno;
304 549
305 ENTER; 550 ENTER;
306 SAVETMPS; 551 SAVETMPS;
307 PUSHMARK (SP); 552 PUSHMARK (SP);
308 EXTEND (SP, 1); 553 EXTEND (SP, 1);
309 554
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
310 switch (req->type) 568 switch (req->type)
311 { 569 {
570 case EIO_WD_OPEN:
571 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
572 break;
573
312 case REQ_READDIR: 574 case EIO_READDIR:
313 { 575 {
314 SV *rv = &PL_sv_undef; 576 SV *rv = &PL_sv_undef;
315 577
316 if (req->result >= 0) 578 if (req->result >= 0)
317 { 579 {
580 int i;
318 char *buf = req->data2ptr; 581 char *names = (char *)req->ptr2;
582 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
319 AV *av = newAV (); 583 AV *av = newAV ();
320 584
321 while (req->result) 585 av_extend (av, req->result - 1);
586
587 for (i = 0; i < req->result; ++i)
322 { 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 {
323 SV *sv = newSVpv (buf, 0); 619 SV *name = newSVpv (names, 0);
324
325 av_push (av, sv); 620 av_store (av, i, name);
326 buf += SvCUR (sv) + 1; 621 names += SvCUR (name) + 1;
327 req->result--; 622 }
328 } 623 }
329 624
330 rv = sv_2mortal (newRV_noinc ((SV *)av)); 625 rv = sv_2mortal (newRV_noinc ((SV *)av));
331 } 626 }
332 627
333 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))));
334 } 632 }
335 break; 633 break;
336 634
337 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:
338 { 641 {
339 /* convert fd to fh */ 642 SV *rv = &PL_sv_undef;
340 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));
341 654
342 PUSHs (sv_2mortal (newSViv (req->result))); 655 rv = sv_2mortal (newRV_noinc ((SV *)hv));
343 PUTBACK;
344 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345 SPAGAIN;
346 656
347 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
348 670
349 PUSHMARK (SP); 671 PUSHs (rv);
350 XPUSHs (sv_2mortal (fh));
351 } 672 }
673
352 break; 674 break;
353 675
354 case REQ_GROUP: 676 case EIO_GROUP:
355 req->fd = 2; /* mark group as finished */ 677 req->int1 = 2; /* mark group as finished */
356 678
357 if (req->data) 679 if (req->sv1)
358 { 680 {
359 int i; 681 int i;
360 AV *av = (AV *)req->data; 682 AV *av = (AV *)req->sv1;
361 683
362 EXTEND (SP, AvFILL (av) + 1); 684 EXTEND (SP, AvFILL (av) + 1);
363 for (i = 0; i <= AvFILL (av); ++i) 685 for (i = 0; i <= AvFILL (av); ++i)
364 PUSHs (*av_fetch (av, i, 0)); 686 PUSHs (*av_fetch (av, i, 0));
365 } 687 }
366 break; 688 break;
367 689
368 case REQ_NOP: 690 case EIO_NOP:
369 case REQ_BUSY: 691 case EIO_BUSY:
370 break; 692 break;
371 693
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
372 default: 795 default:
373 PUSHs (sv_2mortal (newSViv (req->result))); 796 PUSHs (sv_result);
374 break; 797 break;
375 } 798 }
376 799
800 errno = req->errorno;
377 801
378 PUTBACK; 802 PUTBACK;
379 call_sv (req->callback, G_VOID | G_EVAL); 803 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
380 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;
381 810
382 FREETMPS; 811 FREETMPS;
383 LEAVE; 812 LEAVE;
813
814 PUTBACK;
384 } 815 }
385 816
386 if (req->grp) 817 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} 818}
406 819
407static void req_free (aio_req req) 820static void
821req_destroy (aio_req req)
408{ 822{
409 if (req->self) 823 if (req->self)
410 { 824 {
411 sv_unmagic (req->self, PERL_MAGIC_ext); 825 sv_unmagic (req->self, PERL_MAGIC_ext);
412 SvREFCNT_dec (req->self); 826 SvREFCNT_dec (req->self);
413 } 827 }
414 828
415 SvREFCNT_dec (req->data);
416 SvREFCNT_dec (req->fh); 829 SvREFCNT_dec (req->sv1);
417 SvREFCNT_dec (req->fh2); 830 SvREFCNT_dec (req->sv2);
831 SvREFCNT_dec (req->sv3);
832 SvREFCNT_dec (req->sv4);
418 SvREFCNT_dec (req->callback); 833 SvREFCNT_dec (req->callback);
419 Safefree (req->statdata);
420 834
421 if (req->type == REQ_READDIR && req->result >= 0)
422 free (req->data2ptr);
423
424 Safefree (req); 835 free (req);
425} 836}
426 837
427static void req_cancel (aio_req req) 838static void
839req_cancel_subs (aio_req grp)
428{ 840{
429 req->flags |= FLAG_CANCELLED;
430
431 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 ())
432 { 861 {
433 aio_req sub; 862 int size;
434 863
435 for (sub = req->grp_first; sub; sub = sub->grp_next) 864 X_LOCK (EIO_POOL->reslock);
436 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);
437 } 874 }
438} 875}
439 876
440static int poll_cb () 877static int
878poll_cb (void)
441{ 879{
442 dSP;
443 int count = 0;
444 int do_croak = 0;
445 aio_req req;
446
447 for (;;) 880 for (;;)
448 { 881 {
449 pthread_mutex_lock (&reslock); 882 int res = eio_poll ();
450 req = reqq_shift (&res_queue);
451 883
452 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)
453 { 952 {
454 if (!res_queue.size) 953 path = AvARRAY (rv)[1];
954 wdob = AvARRAY (rv)[0];
955
956 if (SvOK (wdob))
455 { 957 {
456 /* read any signals sent by the worker threads */ 958 *wd = SvAIO_WD (wdob);
457 char buf [32]; 959 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
458 while (read (respipe [0], buf, 32) == 32)
459 ;
460 } 960 }
961 else
962 *wd = EIO_INVALID_WD;
461 } 963 }
462 964 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 { 965 {
474 req->fd = 1; /* mark request as delayed */ 966 *wd = (aio_wd)(long)SvIVX (rv);
475 continue; 967 *wdsv = SvREFCNT_inc_NN (rv);
968 *ptr = ".";
969 return; /* path set to "." */
476 } 970 }
477 else 971 else
478 { 972 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 } 973 }
499 974
500 return count; 975 *pathsv = newSVsv (path);
976 *ptr = SvPVbyte_nolen (*pathsv);
501} 977}
502 978
503static void *aio_proc(void *arg); 979static void ecb_noinline
504 980req_set_path1 (aio_req req, SV *path)
505static void start_thread (void)
506{ 981{
507 sigset_t fullsigset, oldsigset; 982 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} 983}
523 984
524static 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)
525{ 987{
526 while (started < wanted && nreqs >= started) 988 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
527 start_thread ();
528 989
529 ++nreqs; 990 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 { 991 {
575 end_thread (); 992 case SVt_PVIO:
576 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;
577 } 1004 }
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} 1005}
597 1006
598/*****************************************************************************/ 1007/*****************************************************************************/
599/* work around various missing functions */
600 1008
601#if !HAVE_PREADWRITE 1009static void
602# define pread aio_pread 1010ts_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{ 1011{
614 ssize_t res; 1012 ts->tv_sec = value;
615 off_t ooffset; 1013 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} 1014}
626 1015
627static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1016static NV
1017ts_get (const struct timespec *ts)
628{ 1018{
629 ssize_t res; 1019 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} 1020}
641#endif
642 1021
643#if !HAVE_FDATASYNC 1022/*****************************************************************************/
644# define fdatasync fsync
645#endif
646 1023
647#if !HAVE_READAHEAD 1024XS(boot_IO__AIO) ecb_cold;
648# define readahead aio_readahead
649 1025
650static ssize_t readahead (int fd, off_t offset, size_t count) 1026MODULE = IO::AIO PACKAGE = IO::AIO
651{
652 dBUF;
653 1027
654 while (count > 0) 1028PROTOTYPES: ENABLE
655 {
656 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
657 1029
658 pread (fd, aio_buf, len, offset); 1030BOOT:
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{ 1031{
676 struct dirent *e; 1032 static const struct {
677 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 },
678 1039
679 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)
680 1045
681 e = readdir (dirp); 1046 /* for lseek */
682 errorno = errno; 1047 const_iv (SEEK_DATA)
1048 const_iv (SEEK_HOLE)
683 1049
684 if (e) 1050 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
685 { 1051 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
686 *res = ent; 1052 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
687 strcpy (ent->d_name, e->d_name); 1053 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
688 } 1054 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
689 else 1055 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
690 *res = 0;
691 1056
692 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)
693 1062
694 errno = errorno; 1063 /* the second block will be 0 when missing */
695 return e ? 0 : -1; 1064 const_iv (O_ACCMODE)
696}
697#endif
698 1065
699/* sendfile always needs emulation */ 1066 const_iv (O_RDONLY)
700static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 1067 const_iv (O_WRONLY)
701{ 1068 const_iv (O_RDWR)
702 ssize_t res; 1069 const_iv (O_CREAT)
1070 const_iv (O_TRUNC)
1071 const_iv (O_EXCL)
1072 const_iv (O_APPEND)
703 1073
704 if (!count) 1074 const_iv (O_ASYNC)
705 return 0; 1075 const_iv (O_DIRECT)
1076 const_iv (O_NOATIME)
706 1077
707#if HAVE_SENDFILE 1078 const_iv (O_CLOEXEC)
708# if __linux 1079 const_iv (O_NOCTTY)
709 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)
710 1091
711# elif __freebsd 1092 const_iv (S_IFIFO)
712 /* 1093 const_iv (S_IFCHR)
713 * Of course, the freebsd sendfile is a dire hack with no thoughts 1094 const_iv (S_IFBLK)
714 * wasted on making it similar to other I/O functions. 1095 const_iv (S_IFLNK)
715 */ 1096 const_iv (S_IFREG)
716 { 1097 const_iv (S_IFDIR)
717 off_t sbytes; 1098 const_iv (S_IFWHT)
718 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1099 const_iv (S_IFSOCK)
1100 const_iv (S_IFMT)
719 1101
720 if (res < 0 && sbytes) 1102 const_iv (ST_RDONLY)
721 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1103 const_iv (ST_NOSUID)
722 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)
723 } 1283 };
724 1284
725# elif __hpux 1285 aio_stash = gv_stashpv ("IO::AIO" , 1);
726 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);
727 1289
728# elif __solaris 1290 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
729 { 1291 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
730 struct sendfilevec vec;
731 size_t sbytes;
732 1292
733 vec.sfv_fd = ifd; 1293 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
734 vec.sfv_flag = 0;
735 vec.sfv_off = offset;
736 vec.sfv_len = count;
737 1294
738 res = sendfilev (ofd, &vec, 1, &sbytes); 1295 reinit ();
1296}
739 1297
740 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;
741 res = sbytes; 1399 req->size = nbytes;
742 } 1400 req->int2 = flags;
743 1401
744# 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
745#else 1437#else
746 res = -1; 1438 pipe (pipefd) < 0
747 errno = ENOSYS; 1439 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
748#endif 1440#endif
749 1441 || 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 { 1442 )
771 if (cnt && !res) res = -1; 1443 abort (); /*D*/
772 break;
773 }
774 1444
775 cnt = write (ofd, aio_buf, cnt); 1445 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 } 1446 }
845 }
846 1447
847 errorno = errno; 1448 req->type = EIO_DUP2;
848 free (u); 1449 req->int1 = close_fd;
849 closedir (dirp); 1450 req->sv2 = newSVsv (fh);
1451 req->int2 = fd;
850 1452
851 if (errorno) 1453 REQ_SEND;
852 {
853 free (names);
854 errno = errorno;
855 res = -1;
856 }
857
858 *namesp = (void *)names;
859 return res;
860} 1454}
861 1455
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 1456void
1030min_parallel (nthreads) 1457aio_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: 1458 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: $$$;$
1054 PPCODE:
1055{ 1459{
1460 int fd = s_fileno_croak (fh, 0);
1056 dREQ; 1461 dREQ;
1057 1462
1058 req->type = REQ_OPEN; 1463 req->type = EIO_SEEK;
1059 req->data = newSVsv (pathname); 1464 req->sv1 = newSVsv (fh);
1060 req->dataptr = SvPVbyte_nolen (req->data); 1465 req->int1 = fd;
1061 req->fd = flags; 1466 req->offs = SvVAL64 (offset);
1062 req->mode = mode; 1467 req->int2 = whence;
1063 1468
1064 REQ_SEND; 1469 REQ_SEND;
1065} 1470}
1066 1471
1067void 1472void
1068aio_close (fh,callback=&PL_sv_undef) 1473aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1069 SV * fh
1070 SV * callback
1071 PROTOTYPE: $;$
1072 ALIAS: 1474 ALIAS:
1073 aio_close = REQ_CLOSE
1074 aio_fsync = REQ_FSYNC
1075 aio_fdatasync = REQ_FDATASYNC
1076 PPCODE:
1077{
1078 dREQ;
1079
1080 req->type = ix;
1081 req->fh = newSVsv (fh);
1082 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083
1084 REQ_SEND (req);
1085}
1086
1087void
1088aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1089 SV * fh
1090 UV offset
1091 UV length
1092 SV * data
1093 UV dataoffset
1094 SV * callback
1095 ALIAS:
1096 aio_read = REQ_READ 1475 aio_read = EIO_READ
1097 aio_write = REQ_WRITE 1476 aio_write = EIO_WRITE
1098 PROTOTYPE: $$$$$;$
1099 PPCODE: 1477 PPCODE:
1100{ 1478{
1101 aio_req req;
1102 STRLEN svlen; 1479 STRLEN svlen;
1480 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1103 char *svptr = SvPVbyte (data, svlen); 1481 char *svptr = SvPVbyte (data, svlen);
1104 1482 UV len = SvUV (length);
1105 SvUPGRADE (data, SVt_PV);
1106 SvPOK_on (data);
1107 1483
1108 if (dataoffset < 0) 1484 if (dataoffset < 0)
1109 dataoffset += svlen; 1485 dataoffset += svlen;
1110 1486
1111 if (dataoffset < 0 || dataoffset > svlen) 1487 if (dataoffset < 0 || dataoffset > svlen)
1112 croak ("data offset outside of string"); 1488 croak ("dataoffset outside of data scalar");
1113 1489
1114 if (ix == REQ_WRITE) 1490 if (ix == EIO_WRITE)
1115 { 1491 {
1116 /* write: check length and adjust. */ 1492 /* write: check length and adjust. */
1117 if (length < 0 || length + dataoffset > svlen) 1493 if (!SvOK (length) || len + dataoffset > svlen)
1118 length = svlen - dataoffset; 1494 len = svlen - dataoffset;
1119 } 1495 }
1120 else 1496 else
1121 { 1497 {
1122 /* read: grow scalar as necessary */ 1498 /* read: check type and grow scalar as necessary */
1499 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1123 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");
1124 } 1503 }
1125
1126 if (length < 0)
1127 croak ("length must not be negative");
1128 1504
1129 { 1505 {
1130 dREQ; 1506 dREQ;
1131 1507
1132 req->type = ix; 1508 req->type = ix;
1133 req->fh = newSVsv (fh); 1509 req->sv1 = newSVsv (fh);
1134 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1510 req->int1 = fd;
1135 : IoOFP (sv_2io (fh))); 1511 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136 req->offset = offset; 1512 req->size = len;
1137 req->length = length;
1138 req->data = SvREFCNT_inc (data); 1513 req->sv2 = SvREFCNT_inc (data);
1139 req->dataptr = (char *)svptr + dataoffset; 1514 req->ptr2 = (char *)svptr + dataoffset;
1515 req->stroffset = dataoffset;
1140 1516
1141 if (!SvREADONLY (data)) 1517 if (!SvREADONLY (data))
1142 { 1518 {
1143 SvREADONLY_on (data); 1519 SvREADONLY_on (data);
1144 req->data2ptr = (void *)data; 1520 req->flags |= FLAG_SV2_RO_OFF;
1145 } 1521 }
1146 1522
1147 REQ_SEND; 1523 REQ_SEND;
1148 } 1524 }
1149} 1525}
1150 1526
1151void 1527void
1152aio_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)
1153 SV * out_fh 1529 ALIAS:
1154 SV * in_fh 1530 aio_ioctl = EIO_IOCTL
1155 UV in_offset 1531 aio_fcntl = EIO_FCNTL
1156 UV length
1157 SV * callback
1158 PROTOTYPE: $$$$;$
1159 PPCODE: 1532 PPCODE:
1160{ 1533{
1161 dREQ; 1534 int fd = s_fileno_croak (fh, 0);
1535 char *svptr;
1162 1536
1163 req->type = REQ_SENDFILE; 1537 if (SvPOK (arg) || !SvNIOK (arg))
1164 req->fh = newSVsv (out_fh);
1165 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166 req->fh2 = newSVsv (in_fh);
1167 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168 req->offset = in_offset;
1169 req->length = length;
1170
1171 REQ_SEND;
1172}
1173
1174void
1175aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1176 SV * fh
1177 UV offset
1178 IV length
1179 SV * callback
1180 PROTOTYPE: $$$;$
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 { 1538 {
1208 req_free (req); 1539 STRLEN svlen;
1209 croak ("out of memory during aio_req->statdata allocation"); 1540 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1210 } 1541#ifdef IOCPARM_LEN
1542 STRLEN need = IOCPARM_LEN (request);
1543#else
1544 STRLEN need = 256;
1545#endif
1211 1546
1212 if (SvPOK (fh_or_path)) 1547 if (svlen < need)
1213 { 1548 svptr = SvGROW (arg, need);
1214 req->type = ix;
1215 req->data = newSVsv (fh_or_path);
1216 req->dataptr = SvPVbyte_nolen (req->data);
1217 } 1549 }
1218 else 1550 else
1551 svptr = (char *)SvIV (arg);
1552
1219 { 1553 {
1554 dREQ;
1555
1220 req->type = REQ_FSTAT; 1556 req->type = ix;
1221 req->fh = newSVsv (fh_or_path); 1557 req->sv1 = newSVsv (fh);
1222 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;
1223 } 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);
1224 1578
1225 REQ_SEND; 1579 REQ_SEND;
1226} 1580}
1227 1581
1228void 1582void
1229aio_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)
1230 SV * pathname 1584 PPCODE:
1231 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)
1232 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
1633stat_xtime ()
1634 ALIAS:
1635 stat_atime = 1
1636 stat_mtime = 2
1637 stat_ctime = 4
1638 stat_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
1646stat_xtimensec ()
1647 ALIAS:
1648 stat_atimensec = 1
1649 stat_mtimensec = 2
1650 stat_ctimensec = 4
1651 stat_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:
1233 aio_unlink = REQ_UNLINK 1757 aio_unlink = EIO_UNLINK
1234 aio_rmdir = REQ_RMDIR 1758 aio_rmdir = EIO_RMDIR
1235 aio_readdir = REQ_READDIR 1759 aio_readdir = EIO_READDIR
1236 PPCODE: 1760 PPCODE:
1237{ 1761{
1238 dREQ; 1762 dREQ;
1239 1763
1240 req->type = ix; 1764 req->type = ix;
1241 req->data = newSVsv (pathname); 1765 req_set_path1 (req, pathname);
1242 req->dataptr = SvPVbyte_nolen (req->data); 1766
1243
1244 REQ_SEND; 1767 REQ_SEND;
1245} 1768}
1246 1769
1247void 1770void
1248aio_link (oldpath,newpath,callback=&PL_sv_undef) 1771aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1249 SV * oldpath
1250 SV * newpath
1251 SV * callback
1252 ALIAS: 1772 ALIAS:
1253 aio_link = REQ_LINK 1773 aio_link = EIO_LINK
1254 aio_symlink = REQ_SYMLINK 1774 aio_symlink = EIO_SYMLINK
1255 aio_rename = REQ_RENAME 1775 aio_rename = EIO_RENAME
1256 PPCODE: 1776 PPCODE:
1257{ 1777{
1778 eio_wd wd2 = 0;
1258 dREQ; 1779 dREQ;
1259 1780
1260 req->type = ix; 1781 req->type = ix;
1261 req->fh = newSVsv (oldpath); 1782 req_set_path1 (req, oldpath);
1262 req->data2ptr = SvPVbyte_nolen (req->fh); 1783 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1263 req->data = newSVsv (newpath); 1784 req->int3 = (long)wd2;
1264 req->dataptr = SvPVbyte_nolen (req->data);
1265 1785
1266 REQ_SEND; 1786 REQ_SEND;
1267} 1787}
1268 1788
1269void 1789void
1270aio_busy (delay,callback=&PL_sv_undef) 1790aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1271 double delay
1272 SV * callback
1273 PPCODE: 1791 PPCODE:
1274{ 1792{
1793 eio_wd wd2 = 0;
1275 dREQ; 1794 dREQ;
1276 1795
1277 req->type = REQ_BUSY; 1796 req->type = EIO_RENAME;
1278 req->fd = delay < 0. ? 0 : delay; 1797 req_set_path1 (req, oldpath);
1279 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1798 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1280 1799 req->int2 = flags;
1800 req->int3 = (long)wd2;
1801
1281 REQ_SEND; 1802 REQ_SEND;
1282} 1803}
1283 1804
1284void 1805void
1285aio_group (callback=&PL_sv_undef) 1806aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1286 SV * callback 1807 PPCODE:
1287 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
1288 PPCODE: 1824 PPCODE:
1289{ 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);
1290 dREQ; 1901 dREQ;
1291 1902
1292 req->type = REQ_GROUP; 1903 req->type = EIO_CUSTOM;
1293 req_send (req); 1904 req->sv1 = newSVsv (fh);
1905 req->int1 = fd;
1294 1906
1295 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1907 req->feed = fiemap;
1296} 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
1297 1915
1916 REQ_SEND;
1917}
1918
1298void 1919void
1299aio_nop (callback=&PL_sv_undef) 1920aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1300 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)
1301 PPCODE: 1959 PPCODE:
1302{ 1960{
1303 dREQ; 1961 dREQ;
1304 1962
1305 req->type = REQ_NOP; 1963 req->type = EIO_BUSY;
1964 req->nv1 = delay < 0. ? 0. : delay;
1306 1965
1307 REQ_SEND; 1966 REQ_SEND;
1308} 1967}
1309 1968
1310void 1969void
1311aioreq_pri (int pri = DEFAULT_PRI) 1970aio_group (SV *callback = &PL_sv_undef)
1312 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 {
1313 if (pri < PRI_MIN) pri = PRI_MIN; 2004 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1314 if (pri > PRI_MAX) pri = PRI_MAX; 2005 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1315 next_pri = pri + PRI_BIAS; 2006 next_pri = pri;
2007 }
2008 OUTPUT:
2009 RETVAL
1316 2010
1317void 2011void
1318aioreq_nice (int nice = 0) 2012aioreq_nice (int nice = 0)
1319 CODE: 2013 CODE:
1320 nice = next_pri - nice; 2014 nice = next_pri - nice;
1321 if (nice < PRI_MIN) nice = PRI_MIN; 2015 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1322 if (nice > PRI_MAX) nice = PRI_MAX; 2016 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1323 next_pri = nice + PRI_BIAS; 2017 next_pri = nice;
1324 2018
1325void 2019void
1326flush () 2020flush ()
1327 PROTOTYPE:
1328 CODE: 2021 CODE:
1329 while (nreqs) 2022 while (eio_nreqs ())
1330 { 2023 {
1331 poll_wait (); 2024 poll_wait ();
1332 poll_cb (); 2025 poll_cb ();
1333 } 2026 }
1334 2027
1335void 2028int
1336poll() 2029poll ()
1337 PROTOTYPE:
1338 CODE: 2030 CODE:
1339 if (nreqs)
1340 {
1341 poll_wait (); 2031 poll_wait ();
1342 poll_cb (); 2032 RETVAL = poll_cb ();
1343 }
1344
1345int
1346poll_fileno()
1347 PROTOTYPE:
1348 CODE:
1349 RETVAL = respipe [0];
1350 OUTPUT: 2033 OUTPUT:
1351 RETVAL 2034 RETVAL
1352 2035
1353int 2036int
2037poll_fileno ()
2038 CODE:
2039 RETVAL = s_epipe_fd (&respipe);
2040 OUTPUT:
2041 RETVAL
2042
2043int
1354poll_cb(...) 2044poll_cb (...)
1355 PROTOTYPE: 2045 PROTOTYPE:
1356 CODE: 2046 CODE:
1357 RETVAL = poll_cb (); 2047 RETVAL = poll_cb ();
1358 OUTPUT: 2048 OUTPUT:
1359 RETVAL 2049 RETVAL
1360 2050
1361void 2051void
1362poll_wait() 2052poll_wait ()
1363 PROTOTYPE:
1364 CODE: 2053 CODE:
1365 if (nreqs)
1366 poll_wait (); 2054 poll_wait ();
1367 2055
1368int 2056int
1369nreqs() 2057nreqs ()
1370 PROTOTYPE:
1371 CODE: 2058 CODE:
1372 RETVAL = nreqs; 2059 RETVAL = eio_nreqs ();
1373 OUTPUT: 2060 OUTPUT:
1374 RETVAL 2061 RETVAL
1375 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
1376PROTOTYPES: 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}
1377 2470
1378MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2471MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379 2472
1380void 2473void
1381cancel (aio_req_ornot req) 2474cancel (aio_req_ornot req)
1382 CODE: 2475 CODE:
1383 req_cancel (req); 2476 eio_cancel (req);
1384 2477
1385void 2478void
1386cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2479cb (aio_req_ornot req, SV *callback = NO_INIT)
1387 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
1388 SvREFCNT_dec (req->callback); 2489 SvREFCNT_dec (req->callback);
1389 req->callback = newSVsv (callback); 2490 req->callback = SvREFCNT_inc (cb_cv);
2491 }
2492}
1390 2493
1391MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2494MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1392 2495
1393void 2496void
1394add (aio_req grp, ...) 2497add (aio_req grp, ...)
1395 PPCODE: 2498 PPCODE:
1396{ 2499{
1397 int i; 2500 int i;
1398 aio_req req;
1399 2501
1400 if (grp->fd == 2) 2502 if (grp->int1 == 2)
1401 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");
1402 2504
1403 for (i = 1; i < items; ++i ) 2505 for (i = 1; i < items; ++i )
1404 { 2506 {
2507 aio_req req;
2508
1405 if (GIMME_V != G_VOID) 2509 if (GIMME_V != G_VOID)
1406 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2510 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1407 2511
1408 req = SvAIO_REQ (ST (i)); 2512 req = SvAIO_REQ (ST (i));
1409 2513
1410 if (req) 2514 if (req)
1411 { 2515 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 } 2516 }
1424} 2517}
2518
2519void
2520cancel_subs (aio_req_ornot req)
2521 CODE:
2522 req_cancel_subs (req);
1425 2523
1426void 2524void
1427result (aio_req grp, ...) 2525result (aio_req grp, ...)
1428 CODE: 2526 CODE:
1429{ 2527{
1430 int i; 2528 int i;
2529 AV *av;
2530
2531 grp->errorno = errno;
2532
1431 AV *av = newAV (); 2533 av = newAV ();
2534 av_extend (av, items - 1);
1432 2535
1433 for (i = 1; i < items; ++i ) 2536 for (i = 1; i < items; ++i )
1434 av_push (av, newSVsv (ST (i))); 2537 av_push (av, newSVsv (ST (i)));
1435 2538
1436 SvREFCNT_dec (grp->data); 2539 SvREFCNT_dec (grp->sv1);
1437 grp->data = (SV *)av; 2540 grp->sv1 = (SV *)av;
1438} 2541}
2542
2543void
2544errno (aio_req grp, int errorno = errno)
2545 CODE:
2546 grp->errorno = errorno;
1439 2547
1440void 2548void
1441limit (aio_req grp, int limit) 2549limit (aio_req grp, int limit)
1442 CODE: 2550 CODE:
1443 grp->fd2 = limit; 2551 eio_grp_limit (grp, limit);
1444 aio_grp_feed (grp);
1445 2552
1446void 2553void
1447feed (aio_req grp, SV *callback=&PL_sv_undef) 2554feed (aio_req grp, SV *callback = &PL_sv_undef)
1448 CODE: 2555 CODE:
1449{ 2556{
1450 SvREFCNT_dec (grp->fh2); 2557 SvREFCNT_dec (grp->sv2);
1451 grp->fh2 = newSVsv (callback); 2558 grp->sv2 = newSVsv (callback);
2559 grp->feed = aio_grp_feed;
1452 2560
1453 if (grp->fd2 <= 0) 2561 if (grp->int2 <= 0)
1454 grp->fd2 = 2; 2562 grp->int2 = 2;
1455 2563
1456 aio_grp_feed (grp); 2564 eio_grp_limit (grp, grp->int2);
1457} 2565}
1458 2566

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