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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.77 by root, Thu Oct 26 13:25:40 2006 UTC vs.
Revision 1.260 by root, Tue Jul 24 04:58:59 2018 UTC

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

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