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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 1.258 by root, Wed Jul 18 00:57:55 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/* defines all sorts of constants to 0 unless they are already defined */
49#ifndef NAME_MAX 169/* also provides const_iv_ and const_niv_ macros for them */
50# define NAME_MAX 4096 170#include "def0.h"
51#endif
52 171
53#ifndef PTHREAD_STACK_MIN 172#ifndef makedev
54/* care for broken platforms, e.g. windows */ 173# define makedev(maj,min) (((maj) << 8) | (min))
55# define PTHREAD_STACK_MIN 16384
56#endif 174#endif
57 175#ifndef major
58#if __ia64 176# define major(dev) ((dev) >> 8)
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 177#endif
178#ifndef minor
179# define minor(dev) ((dev) & 0xff)
180#endif
65 181
66/* buffer size for various temporary buffers */ 182#if PAGESIZE <= 0
67#define AIO_BUFSIZE 65536 183# define PAGESIZE sysconf (_SC_PAGESIZE)
184#endif
68 185
69#define dBUF \ 186/*****************************************************************************/
70 char *aio_buf; \ 187
71 LOCK (wrklock); \ 188#if !_POSIX_MAPPED_FILES
72 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 189# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
73 UNLOCK (wrklock); \ 190# define munmap(addr,length) EIO_ENOSYS ()
74 if (!aio_buf) \ 191#endif
192
193#if !_POSIX_MEMORY_PROTECTION
194# define mprotect(addr,len,prot) EIO_ENOSYS ()
195#endif
196
197#if !MREMAP_MAYMOVE
198# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
199#endif
200
201#define FOREIGN_MAGIC PERL_MAGIC_ext
202
203static int ecb_cold
204mmap_free (pTHX_ SV *sv, MAGIC *mg)
205{
206 int old_errno = errno;
207 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
208 errno = old_errno;
209
210 mg->mg_obj = 0; /* just in case */
211
212 SvREADONLY_off (sv);
213
214 if (SvPVX (sv) != mg->mg_ptr)
215 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
216
217 SvCUR_set (sv, 0);
218 SvPVX (sv) = 0;
219 SvOK_off (sv);
220
75 return -1; 221 return 0;
222}
76 223
77enum { 224static MGVTBL mmap_vtbl = {
78 REQ_QUIT, 225 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}; 226};
90 227
91#define AIO_REQ_KLASS "IO::AIO::REQ" 228static int ecb_cold
92#define AIO_GRP_KLASS "IO::AIO::GRP" 229sysfree_free (pTHX_ SV *sv, MAGIC *mg)
93
94typedef struct aio_cb
95{ 230{
96 struct aio_cb *volatile next; 231 free (mg->mg_ptr);
232 mg->mg_obj = 0; /* just in case */
97 233
98 SV *data, *callback; 234 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;
105 235
106 STRLEN dataoffset; 236 if (SvPVX (sv) != mg->mg_ptr)
107 int type; 237 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
108 int fd, fd2;
109 int errorno;
110 mode_t mode; /* open */
111 238
112 unsigned char flags; 239 SvCUR_set (sv, 0);
113 unsigned char pri; 240 SvPVX (sv) = 0;
241 SvOK_off (sv);
114 242
115 SV *self; /* the perl counterpart of this request, if any */ 243 return 0;
116 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 244}
117} aio_cb;
118 245
119enum { 246static MGVTBL sysfree_vtbl = {
120 FLAG_CANCELLED = 0x01, 247 0, 0, 0, 0, sysfree_free
121}; 248};
122 249
123typedef aio_cb *aio_req; 250/*****************************************************************************/
124typedef aio_cb *aio_req_ornot;
125 251
126enum { 252/* helper: set scalar to foreign ptr with custom free */
127 PRI_MIN = -4, 253static void
128 PRI_MAX = 4, 254sv_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{ 255{
169 if (wrk->dirp) 256 sv_force_normal (sv);
257
258 /* we store the length in mg_obj, as namlen is I32 :/ */
259 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
260 ->mg_obj = (SV *)length;
261
262 SvUPGRADE (sv, SVt_PV); /* nop... */
263
264 if (SvLEN (sv))
265 Safefree (SvPVX (sv));
266
267 SvPVX (sv) = (char *)addr;
268 SvCUR_set (sv, length);
269 SvLEN_set (sv, 0);
270 SvPOK_only (sv);
271}
272
273static void
274sv_clear_foreign (SV *sv)
275{
276 /* todo: iterate over magic and only free ours, but of course */
277 /* the perl5porters will call that (correct) behaviour buggy */
278 sv_unmagic (sv, FOREIGN_MAGIC);
279}
280
281/*****************************************************************************/
282
283static void
284fiemap (eio_req *req)
285{
286 req->result = -1;
287
288#if HAVE_FIEMAP
289 /* assume some c99 */
290 struct fiemap *fiemap = 0;
291 size_t end_offset;
292 int count = req->int3;
293
294 req->flags |= EIO_FLAG_PTR1_FREE;
295
296 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
297 /* increase in 3.5kb steps */
298 if (count < 0)
299 count = 8;
300
301 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
302 errno = ENOMEM;
303 if (!fiemap)
304 return;
305
306 req->ptr1 = fiemap;
307
308 fiemap->fm_start = req->offs;
309 fiemap->fm_length = req->size;
310 fiemap->fm_flags = req->int2;
311 fiemap->fm_extent_count = count;
312
313 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
314 return;
315
316 if (req->int3 >= 0 /* not autosizing */
317 || !fiemap->fm_mapped_extents /* no more extents */
318 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
319 goto done;
320
321 /* else we have to loop -
322 * it would be tempting (actually I tried that first) to just query the
323 * number of extents needed, but linux often feels like not returning all
324 * extents, without telling us it left any out. this complicates
325 * this quite a bit.
326 */
327
328 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
329
330 for (;;)
170 { 331 {
171 closedir (wrk->dirp); 332 /* 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; 333 char scratch[3072];
173 } 334 struct fiemap *incmap = (struct fiemap *)scratch;
174 335
175 if (wrk->dbuf) 336 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
176 { 337 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
177 free (wrk->dbuf); 338 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
178 wrk->dbuf = 0; 339 incmap->fm_flags = fiemap->fm_flags;
179 } 340 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
180}
181 341
182static void worker_free (worker *wrk) 342 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; 343 return;
229 344
230 --q->size; 345 if (!incmap->fm_mapped_extents)
346 goto done;
231 347
232 for (pri = NUM_PRI; pri--; ) 348 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
233 { 349 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
234 aio_req req = q->qs[pri]; 350 errno = ENOMEM;
235
236 if (req) 351 if (!fiemap)
352 return;
353
354 req->ptr1 = fiemap;
355
356 for (count = 0; count < incmap->fm_mapped_extents; ++count)
237 { 357 {
238 if (!(q->qs[pri] = req->next)) 358 struct fiemap_extent *e = incmap->fm_extents + count;
239 q->qe[pri] = 0;
240 359
241 return req; 360 if (e->fe_logical + e->fe_length >= end_offset)
361 goto done;
362
363 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
364
365 if (e->fe_flags & FIEMAP_EXTENT_LAST)
366 goto done;
367
242 } 368 }
243 } 369 }
244 370
245 abort (); 371done:
246} 372 req->result = 0;
247 373
248static int poll_cb (int max); 374#else
249static void req_invoke (aio_req req); 375 errno = ENOSYS;
376#endif
377}
378
379/*****************************************************************************/
380
381enum {
382 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
383};
384
385typedef eio_req *aio_req;
386typedef eio_req *aio_req_ornot;
387typedef eio_wd aio_wd;
388
389static SV *on_next_submit;
390static int next_pri = EIO_PRI_DEFAULT;
391static int max_outstanding;
392
393static s_epipe respipe;
394
250static void req_free (aio_req req); 395static void req_destroy (aio_req req);
251static void req_cancel (aio_req req); 396static void req_cancel (aio_req req);
252 397
398static void
399want_poll (void)
400{
401 /* write a dummy byte to the pipe so fh becomes ready */
402 s_epipe_signal (&respipe);
403}
404
405static void
406done_poll (void)
407{
408 /* read any signals sent by the worker threads */
409 s_epipe_drain (&respipe);
410}
411
253/* must be called at most once */ 412/* must be called at most once */
254static SV *req_sv (aio_req req, const char *klass) 413static SV *
414req_sv (aio_req req, HV *stash)
255{ 415{
256 if (!req->self) 416 if (!req->self)
257 { 417 {
258 req->self = (SV *)newHV (); 418 req->self = (SV *)newHV ();
259 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 419 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260 } 420 }
261 421
262 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 422 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263} 423}
264 424
265static aio_req SvAIO_REQ (SV *sv) 425static SV *
426newSVaio_wd (aio_wd wd)
427{
428 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
429}
430
431static aio_req
432SvAIO_REQ (SV *sv)
266{ 433{
267 MAGIC *mg; 434 MAGIC *mg;
268 435
269 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 436 if (!SvROK (sv)
437 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
438 || (SvSTASH (SvRV (sv)) != aio_grp_stash
439 && SvSTASH (SvRV (sv)) != aio_req_stash
440 && !sv_derived_from (sv, "IO::AIO::REQ")))
270 croak ("object of class " AIO_REQ_KLASS " expected"); 441 croak ("object of class IO::AIO::REQ expected");
271 442
272 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 443 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273 444
274 return mg ? (aio_req)mg->mg_ptr : 0; 445 return mg ? (aio_req)mg->mg_ptr : 0;
275} 446}
276 447
448static aio_wd
449SvAIO_WD (SV *sv)
450{
451 if (!SvROK (sv)
452 || SvTYPE (SvRV (sv)) != SVt_PVMG
453 || SvSTASH (SvRV (sv)) != aio_wd_stash)
454 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
455
456 return (aio_wd)(long)SvIVX (SvRV (sv));
457}
458
459static SV *
460newmortalFH (int fd, int flags)
461{
462 if (fd < 0)
463 return &PL_sv_undef;
464
465 GV *gv = (GV *)sv_newmortal ();
466 char sym[64];
467 int symlen;
468
469 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
470 gv_init (gv, aio_stash, sym, symlen, 0);
471
472 symlen = snprintf (
473 sym,
474 sizeof (sym),
475 "%s&=%d",
476 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
477 fd
478 );
479
480 return do_open (gv, sym, symlen, 0, 0, 0, 0)
481 ? (SV *)gv : &PL_sv_undef;
482}
483
484static void
277static void aio_grp_feed (aio_req grp) 485aio_grp_feed (aio_req grp)
278{ 486{
279 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 487 if (grp->sv2 && SvOK (grp->sv2))
280 { 488 {
281 int old_len = grp->length;
282
283 if (grp->fh2 && SvOK (grp->fh2))
284 {
285 dSP; 489 dSP;
286 490
287 ENTER; 491 ENTER;
288 SAVETMPS; 492 SAVETMPS;
289 PUSHMARK (SP); 493 PUSHMARK (SP);
290 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 494 XPUSHs (req_sv (grp, aio_grp_stash));
291 PUTBACK; 495 PUTBACK;
292 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 496 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293 SPAGAIN; 497 SPAGAIN;
294 FREETMPS; 498 FREETMPS;
295 LEAVE; 499 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 } 500 }
306} 501}
307 502
308static void aio_grp_dec (aio_req grp) 503static void
504req_submit (eio_req *req)
309{ 505{
310 --grp->length; 506 eio_submit (req);
311 507
312 /* call feeder, if applicable */ 508 if (expect_false (on_next_submit))
313 aio_grp_feed (grp);
314
315 /* finish, if done */
316 if (!grp->length && grp->fd)
317 { 509 {
318 req_invoke (grp); 510 dSP;
319 req_free (grp); 511 SV *cb = sv_2mortal (on_next_submit);
512
513 on_next_submit = 0;
514
515 PUSHMARK (SP);
516 PUTBACK;
517 call_sv (cb, G_DISCARD | G_EVAL);
320 } 518 }
321} 519}
322 520
323static void poll_wait () 521static int
522req_invoke (eio_req *req)
324{ 523{
325 fd_set rfd; 524 if (req->flags & FLAG_SV2_RO_OFF)
525 SvREADONLY_off (req->sv2);
326 526
327 while (nreqs) 527 if (!EIO_CANCELLED (req) && req->callback)
328 { 528 {
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; 529 dSP;
351 530 static SV *sv_result_cache; /* caches the result integer SV */
352 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 531 SV *sv_result;
353 {
354 errno = req->errorno;
355 532
356 ENTER; 533 ENTER;
357 SAVETMPS; 534 SAVETMPS;
358 PUSHMARK (SP); 535 PUSHMARK (SP);
359 EXTEND (SP, 1); 536 EXTEND (SP, 1);
360 537
538 /* do not recreate the result IV from scratch each time */
539 if (expect_true (sv_result_cache))
540 {
541 sv_result = sv_result_cache; sv_result_cache = 0;
542 SvIV_set (sv_result, req->result);
543 SvIOK_only (sv_result);
544 }
545 else
546 {
547 sv_result = newSViv (req->result);
548 SvREADONLY_on (sv_result);
549 }
550
361 switch (req->type) 551 switch (req->type)
362 { 552 {
553 case EIO_WD_OPEN:
554 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
555 break;
556
363 case REQ_READDIR: 557 case EIO_READDIR:
364 { 558 {
365 SV *rv = &PL_sv_undef; 559 SV *rv = &PL_sv_undef;
366 560
367 if (req->result >= 0) 561 if (req->result >= 0)
368 { 562 {
369 int i; 563 int i;
370 char *buf = req->data2ptr; 564 char *names = (char *)req->ptr2;
565 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371 AV *av = newAV (); 566 AV *av = newAV ();
372 567
373 av_extend (av, req->result - 1); 568 av_extend (av, req->result - 1);
374 569
375 for (i = 0; i < req->result; ++i) 570 for (i = 0; i < req->result; ++i)
376 { 571 {
377 SV *sv = newSVpv (buf, 0); 572 if (req->int1 & EIO_READDIR_DENTS)
573 {
574 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378 575
576 if (req->int1 & EIO_READDIR_CUSTOM2)
577 {
578 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
579 AV *avent = newAV ();
580
581 av_extend (avent, 2);
582
583 if (!sv_type [ent->type])
584 {
585 sv_type [ent->type] = newSViv (ent->type);
586 SvREADONLY_on (sv_type [ent->type]);
587 }
588
589 av_store (avent, 0, namesv);
590 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
591 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
592
593 av_store (av, i, newRV_noinc ((SV *)avent));
594 }
595 else
379 av_store (av, i, sv); 596 av_store (av, i, namesv);
597
598 ++ent;
599 }
600 else
601 {
602 SV *name = newSVpv (names, 0);
603 av_store (av, i, name);
380 buf += SvCUR (sv) + 1; 604 names += SvCUR (name) + 1;
605 }
381 } 606 }
382 607
383 rv = sv_2mortal (newRV_noinc ((SV *)av)); 608 rv = sv_2mortal (newRV_noinc ((SV *)av));
384 } 609 }
385 610
386 PUSHs (rv); 611 PUSHs (rv);
612
613 if (req->int1 & EIO_READDIR_CUSTOM1)
614 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
387 } 615 }
388 break; 616 break;
389 617
390 case REQ_OPEN: 618 case EIO_OPEN:
619 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
620 break;
621
622 case EIO_STATVFS:
623 case EIO_FSTATVFS:
391 { 624 {
392 /* convert fd to fh */ 625 SV *rv = &PL_sv_undef;
393 SV *fh; 626
627#ifndef _WIN32
628 if (req->result >= 0)
629 {
630 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
631 HV *hv = newHV ();
632 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
633 * chooses to make it a struct.
634 */
635 unsigned long fsid = 0;
636 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
394 637
395 PUSHs (sv_2mortal (newSViv (req->result))); 638 rv = sv_2mortal (newRV_noinc ((SV *)hv));
396 PUTBACK;
397 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
398 SPAGAIN;
399 639
400 fh = SvREFCNT_inc (POPs); 640 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
641 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
642 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
643 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
644 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
645 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
646 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
647 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
648 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
649 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
650 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
651 }
652#endif
401 653
402 PUSHMARK (SP); 654 PUSHs (rv);
403 XPUSHs (sv_2mortal (fh));
404 } 655 }
656
405 break; 657 break;
406 658
407 case REQ_GROUP: 659 case EIO_GROUP:
408 req->fd = 2; /* mark group as finished */ 660 req->int1 = 2; /* mark group as finished */
409 661
410 if (req->data) 662 if (req->sv1)
411 { 663 {
412 int i; 664 int i;
413 AV *av = (AV *)req->data; 665 AV *av = (AV *)req->sv1;
414 666
415 EXTEND (SP, AvFILL (av) + 1); 667 EXTEND (SP, AvFILL (av) + 1);
416 for (i = 0; i <= AvFILL (av); ++i) 668 for (i = 0; i <= AvFILL (av); ++i)
417 PUSHs (*av_fetch (av, i, 0)); 669 PUSHs (*av_fetch (av, i, 0));
418 } 670 }
419 break; 671 break;
420 672
421 case REQ_NOP: 673 case EIO_NOP:
422 case REQ_BUSY: 674 case EIO_BUSY:
423 break; 675 break;
424 676
677 case EIO_READLINK:
678 case EIO_REALPATH:
679 if (req->result > 0)
680 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
681 break;
682
683 case EIO_STAT:
684 case EIO_LSTAT:
685 case EIO_FSTAT:
686 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
687
688 if (!(PL_laststatval = req->result))
689 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
690 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
691
692 PUSHs (sv_result);
693 break;
694
695 case EIO_SEEK:
696 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
697 break;
698
699 case EIO_READ:
700 {
701 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
702 *SvEND (req->sv2) = 0;
703 SvPOK_only (req->sv2);
704 SvSETMAGIC (req->sv2);
705 PUSHs (sv_result);
706 }
707 break;
708
709 case EIO_SLURP:
710 {
711 if (req->result >= 0)
712 {
713 /* if length was originally not known, we steal the malloc'ed memory */
714 if (req->flags & EIO_FLAG_PTR2_FREE)
715 {
716 req->flags &= ~EIO_FLAG_PTR2_FREE;
717 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
718 }
719 else
720 {
721 SvCUR_set (req->sv2, req->result);
722 *SvEND (req->sv2) = 0;
723 SvPOK_only (req->sv2);
724 }
725
726 SvSETMAGIC (req->sv2);
727 }
728
729 PUSHs (sv_result);
730 }
731 break;
732
733 case EIO_CUSTOM:
734 if (req->feed == fiemap)
735 {
736#if HAVE_FIEMAP
737 if (!req->result)
738 {
739 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
740
741 if (fiemap->fm_extent_count)
742 {
743 AV *av = newAV ();
744 int i;
745
746 while (fiemap->fm_mapped_extents)
747 {
748 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
749 AV *ext_av = newAV ();
750
751 av_store (ext_av, 3, newSVuv (extent->fe_flags));
752 av_store (ext_av, 2, newSVval64 (extent->fe_length));
753 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
754 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
755
756 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
757 }
758
759 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
760 }
761 else
762 {
763 SvIV_set (sv_result, fiemap->fm_mapped_extents);
764 PUSHs (sv_result);
765 }
766 }
767#endif
768 }
769 else
770 PUSHs (sv_result);
771 break;
772
773 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
774 if (req->result > 0)
775 SvIV_set (sv_result, 0);
776 /* FALLTHROUGH */
777
425 default: 778 default:
426 PUSHs (sv_2mortal (newSViv (req->result))); 779 PUSHs (sv_result);
427 break; 780 break;
428 } 781 }
429 782
783 errno = req->errorno;
430 784
431 PUTBACK; 785 PUTBACK;
432 call_sv (req->callback, G_VOID | G_EVAL); 786 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433 SPAGAIN; 787 SPAGAIN;
788
789 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
790 SvREFCNT_dec (sv_result);
791 else
792 sv_result_cache = sv_result;
434 793
435 FREETMPS; 794 FREETMPS;
436 LEAVE; 795 LEAVE;
796
797 PUTBACK;
437 } 798 }
438 799
439 if (req->grp) 800 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} 801}
459 802
460static void req_free (aio_req req) 803static void
804req_destroy (aio_req req)
461{ 805{
462 if (req->self) 806 if (req->self)
463 { 807 {
464 sv_unmagic (req->self, PERL_MAGIC_ext); 808 sv_unmagic (req->self, PERL_MAGIC_ext);
465 SvREFCNT_dec (req->self); 809 SvREFCNT_dec (req->self);
466 } 810 }
467 811
468 SvREFCNT_dec (req->data);
469 SvREFCNT_dec (req->fh); 812 SvREFCNT_dec (req->sv1);
470 SvREFCNT_dec (req->fh2); 813 SvREFCNT_dec (req->sv2);
814 SvREFCNT_dec (req->sv3);
815 SvREFCNT_dec (req->sv4);
471 SvREFCNT_dec (req->callback); 816 SvREFCNT_dec (req->callback);
472 Safefree (req->statdata);
473 817
474 if (req->type == REQ_READDIR)
475 free (req->data2ptr);
476
477 Safefree (req); 818 free (req);
478} 819}
479 820
821static void
480static void req_cancel_subs (aio_req grp) 822req_cancel_subs (aio_req grp)
481{ 823{
482 aio_req sub;
483
484 if (grp->type != REQ_GROUP) 824 if (grp->type != EIO_GROUP)
485 return; 825 return;
486 826
487 SvREFCNT_dec (grp->fh2); 827 SvREFCNT_dec (grp->sv2);
488 grp->fh2 = 0; 828 grp->sv2 = 0;
489 829
490 for (sub = grp->grp_first; sub; sub = sub->grp_next) 830 eio_grp_cancel (grp);
491 req_cancel (sub);
492} 831}
493 832
494static void req_cancel (aio_req req) 833static void ecb_cold
834create_respipe (void)
495{ 835{
496 req->flags |= FLAG_CANCELLED; 836 if (s_epipe_renew (&respipe))
497 837 croak ("IO::AIO: unable to initialize result pipe");
498 req_cancel_subs (req);
499} 838}
500 839
501static int poll_cb (int max) 840static void
841poll_wait (void)
502{ 842{
503 dSP; 843 while (eio_nreqs ())
504 int count = 0; 844 {
505 int do_croak = 0; 845 int size;
846
847 X_LOCK (EIO_POOL->reslock);
848 size = EIO_POOL->res_queue.size;
849 X_UNLOCK (EIO_POOL->reslock);
850
851 if (size)
852 return;
853
854 etp_maybe_start_thread (EIO_POOL);
855
856 s_epipe_wait (&respipe);
857 }
858}
859
860static int
861poll_cb (void)
862{
863 for (;;)
864 {
865 int res = eio_poll ();
866
867 if (res > 0)
868 croak (0);
869
870 if (!max_outstanding || max_outstanding > eio_nreqs ())
871 return res;
872
873 poll_wait ();
874 }
875}
876
877static void ecb_cold
878reinit (void)
879{
880 create_respipe ();
881
882 if (eio_init (want_poll, done_poll) < 0)
883 croak ("IO::AIO: unable to initialise eio library");
884}
885
886/*****************************************************************************/
887
888static SV *
889get_cb (SV *cb_sv)
890{
891 SvGETMAGIC (cb_sv);
892 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
893}
894
895static aio_req ecb_noinline
896dreq (SV *callback)
897{
898 SV *cb_cv;
506 aio_req req; 899 aio_req req;
900 int req_pri = next_pri;
901 next_pri = EIO_PRI_DEFAULT;
507 902
508 while (max <= 0 || count < max) 903 cb_cv = get_cb (callback);
904
905 req = calloc (sizeof (*req), 1);
906 if (!req)
907 croak ("out of memory during eio_req allocation");
908
909 req->callback = SvREFCNT_inc (cb_cv);
910 req->pri = req_pri;
911
912 return req;
913}
914
915#define dREQ \
916 aio_req req = dreq (callback); \
917
918#define REQ_SEND \
919 PUTBACK; \
920 req_submit (req); \
921 SPAGAIN; \
922 \
923 if (GIMME_V != G_VOID) \
924 XPUSHs (req_sv (req, aio_req_stash));
925
926ecb_inline void
927req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
928{
929 if (expect_false (SvROK (path)))
509 { 930 {
510 LOCK (reslock); 931 SV *rv = SvRV (path);
511 req = reqq_shift (&res_queue); 932 SV *wdob;
512 933
513 if (req) 934 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
514 { 935 {
515 if (!res_queue.size) 936 path = AvARRAY (rv)[1];
937 wdob = AvARRAY (rv)[0];
938
939 if (SvOK (wdob))
516 { 940 {
517 /* read any signals sent by the worker threads */ 941 *wd = SvAIO_WD (wdob);
518 char buf [32]; 942 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
519 while (read (respipe [0], buf, 32) == 32)
520 ;
521 } 943 }
944 else
945 *wd = EIO_INVALID_WD;
522 } 946 }
523 947 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 { 948 {
535 req->fd = 1; /* mark request as delayed */ 949 *wd = (aio_wd)(long)SvIVX (rv);
536 continue; 950 *wdsv = SvREFCNT_inc_NN (rv);
951 *ptr = ".";
952 return; /* path set to "." */
537 } 953 }
538 else 954 else
539 { 955 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 } 956 }
560 957
561 return count; 958 *pathsv = newSVsv (path);
959 *ptr = SvPVbyte_nolen (*pathsv);
562} 960}
563 961
564static void *aio_proc(void *arg); 962static void ecb_noinline
565 963req_set_path1 (aio_req req, SV *path)
566static void start_thread (void)
567{ 964{
568 sigset_t fullsigset, oldsigset; 965 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
569 pthread_attr_t attr; 966}
570 967
571 worker *wrk = calloc (1, sizeof (worker)); 968static void ecb_noinline
969req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
970{
971 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
572 972
573 if (!wrk) 973 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 { 974 {
587 wrk->prev = &wrk_first; 975 case SVt_PVIO:
588 wrk->next = wrk_first.next; 976 case SVt_PVLV:
589 wrk_first.next->prev = wrk; 977 case SVt_PVGV:
590 wrk_first.next = wrk; 978 req->type = type_fh;
591 started++; 979 req->sv1 = newSVsv (fh_or_path);
980 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
981 break;
982
983 default:
984 req->type = type_path;
985 req_set_path1 (req, fh_or_path);
986 break;
592 } 987 }
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} 988}
662 989
663/*****************************************************************************/ 990/*****************************************************************************/
664/* work around various missing functions */
665 991
666#if !HAVE_PREADWRITE 992static void
667# define pread aio_pread 993ts_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{ 994{
679 ssize_t res; 995 ts->tv_sec = value;
680 off_t ooffset; 996 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} 997}
691 998
692static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 999static NV
1000ts_get (const struct timespec *ts)
693{ 1001{
694 ssize_t res; 1002 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} 1003}
706#endif
707 1004
708#if !HAVE_FDATASYNC 1005/*****************************************************************************/
709# define fdatasync fsync
710#endif
711 1006
712#if !HAVE_READAHEAD 1007XS(boot_IO__AIO) ecb_cold;
713# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
714 1008
715static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1009MODULE = IO::AIO PACKAGE = IO::AIO
716{
717 dBUF;
718 1010
719 while (count > 0) 1011PROTOTYPES: ENABLE
720 {
721 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722 1012
723 pread (fd, aio_buf, len, offset); 1013BOOT:
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{ 1014{
740 struct dirent *e; 1015 static const struct {
741 int errorno; 1016 const char *name;
1017 IV iv;
1018 } *civ, const_iv[] = {
1019# define const_niv(name, value) { # name, (IV) value },
1020# define const_iv(name) { # name, (IV) name },
1021# define const_eio(name) { # name, (IV) EIO_ ## name },
742 1022
743 LOCK (readdirlock); 1023 /* you have to re-run ./gendef0 after adding/removing any constants here */
1024 /* the first block can be undef if missing */
1025 const_iv (ENOSYS)
1026 const_iv (EXDEV)
1027 const_iv (EBADR)
744 1028
745 e = readdir (dirp); 1029 /* for lseek */
746 errorno = errno; 1030 const_iv (SEEK_DATA)
1031 const_iv (SEEK_HOLE)
747 1032
748 if (e) 1033 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
749 { 1034 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
750 *res = ent; 1035 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
751 strcpy (ent->d_name, e->d_name); 1036 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
752 } 1037 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
753 else 1038 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
754 *res = 0;
755 1039
756 UNLOCK (readdirlock); 1040 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1041 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1042 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1043 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1044 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
757 1045
758 errno = errorno; 1046 /* the second block will be 0 when missing */
759 return e ? 0 : -1; 1047 const_iv (O_RDONLY)
760} 1048 const_iv (O_WRONLY)
761#endif 1049 const_iv (O_RDWR)
1050 const_iv (O_CREAT)
1051 const_iv (O_TRUNC)
1052 const_iv (O_EXCL)
1053 const_iv (O_APPEND)
762 1054
763/* sendfile always needs emulation */ 1055 const_iv (O_ASYNC)
764static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1056 const_iv (O_DIRECT)
765{ 1057 const_iv (O_NOATIME)
766 ssize_t res;
767 1058
768 if (!count) 1059 const_iv (O_CLOEXEC)
769 return 0; 1060 const_iv (O_NOCTTY)
1061 const_iv (O_NOFOLLOW)
1062 const_iv (O_NONBLOCK)
1063 const_iv (O_EXEC)
1064 const_iv (O_SEARCH)
1065 const_iv (O_DIRECTORY)
1066 const_iv (O_DSYNC)
1067 const_iv (O_RSYNC)
1068 const_iv (O_SYNC)
1069 const_iv (O_PATH)
1070 const_iv (O_TMPFILE)
1071 const_iv (O_TTY_INIT)
770 1072
771#if HAVE_SENDFILE 1073 const_iv (S_IFIFO)
772# if __linux 1074 const_iv (S_IFCHR)
773 res = sendfile (ofd, ifd, &offset, count); 1075 const_iv (S_IFBLK)
1076 const_iv (S_IFLNK)
1077 const_iv (S_IFREG)
1078 const_iv (S_IFDIR)
1079 const_iv (S_IFWHT)
1080 const_iv (S_IFSOCK)
1081 const_iv (S_IFMT)
774 1082
775# elif __freebsd 1083 const_iv (ST_RDONLY)
776 /* 1084 const_iv (ST_NOSUID)
777 * Of course, the freebsd sendfile is a dire hack with no thoughts 1085 const_iv (ST_NODEV)
778 * wasted on making it similar to other I/O functions. 1086 const_iv (ST_NOEXEC)
779 */ 1087 const_iv (ST_SYNCHRONOUS)
780 { 1088 const_iv (ST_MANDLOCK)
781 off_t sbytes; 1089 const_iv (ST_WRITE)
782 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1090 const_iv (ST_APPEND)
1091 const_iv (ST_IMMUTABLE)
1092 const_iv (ST_NOATIME)
1093 const_iv (ST_NODIRATIME)
1094 const_iv (ST_RELATIME)
783 1095
784 if (res < 0 && sbytes) 1096 const_iv (PROT_NONE)
785 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1097 const_iv (PROT_EXEC)
786 res = sbytes; 1098 const_iv (PROT_READ)
1099 const_iv (PROT_WRITE)
1100
1101 const_iv (MAP_PRIVATE)
1102 const_iv (MAP_SHARED)
1103 const_iv (MAP_FIXED)
1104 const_iv (MAP_ANONYMOUS)
1105
1106 /* linuxish */
1107 const_iv (MAP_LOCKED)
1108 const_iv (MAP_NORESERVE)
1109 const_iv (MAP_POPULATE)
1110 const_iv (MAP_NONBLOCK)
1111 const_iv (MAP_GROWSDOWN)
1112 const_iv (MAP_32BIT)
1113 const_iv (MAP_HUGETLB)
1114 const_iv (MAP_STACK)
1115
1116 const_iv (MREMAP_MAYMOVE)
1117 const_iv (MREMAP_FIXED)
1118
1119 const_iv (F_DUPFD_CLOEXEC)
1120
1121 const_iv (F_OFD_GETLK)
1122 const_iv (F_OFD_SETLK)
1123 const_iv (F_OFD_GETLKW)
1124
1125 const_iv (FIFREEZE)
1126 const_iv (FITHAW)
1127 const_iv (FITRIM)
1128 const_iv (FICLONE)
1129 const_iv (FICLONERANGE)
1130 const_iv (FIDEDUPERANGE)
1131
1132 const_iv (FS_IOC_GETFLAGS)
1133 const_iv (FS_IOC_SETFLAGS)
1134 const_iv (FS_IOC_GETVERSION)
1135 const_iv (FS_IOC_SETVERSION)
1136 const_iv (FS_IOC_FIEMAP)
1137 const_iv (FS_IOC_FSGETXATTR)
1138 const_iv (FS_IOC_FSSETXATTR)
1139 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1140 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1141 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1142
1143 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1144
1145 const_iv (FS_SECRM_FL)
1146 const_iv (FS_UNRM_FL)
1147 const_iv (FS_COMPR_FL)
1148 const_iv (FS_SYNC_FL)
1149 const_iv (FS_IMMUTABLE_FL)
1150 const_iv (FS_APPEND_FL)
1151 const_iv (FS_NODUMP_FL)
1152 const_iv (FS_NOATIME_FL)
1153 const_iv (FS_DIRTY_FL)
1154 const_iv (FS_COMPRBLK_FL)
1155 const_iv (FS_NOCOMP_FL)
1156 const_iv (FS_ENCRYPT_FL)
1157 const_iv (FS_BTREE_FL)
1158 const_iv (FS_INDEX_FL)
1159 const_iv (FS_JOURNAL_DATA_FL)
1160 const_iv (FS_NOTAIL_FL)
1161 const_iv (FS_DIRSYNC_FL)
1162 const_iv (FS_TOPDIR_FL)
1163 const_iv (FS_FL_USER_MODIFIABLE)
1164
1165 const_iv (FS_XFLAG_REALTIME)
1166 const_iv (FS_XFLAG_PREALLOC)
1167 const_iv (FS_XFLAG_IMMUTABLE)
1168 const_iv (FS_XFLAG_APPEND)
1169 const_iv (FS_XFLAG_SYNC)
1170 const_iv (FS_XFLAG_NOATIME)
1171 const_iv (FS_XFLAG_NODUMP)
1172 const_iv (FS_XFLAG_RTINHERIT)
1173 const_iv (FS_XFLAG_PROJINHERIT)
1174 const_iv (FS_XFLAG_NOSYMLINKS)
1175 const_iv (FS_XFLAG_EXTSIZE)
1176 const_iv (FS_XFLAG_EXTSZINHERIT)
1177 const_iv (FS_XFLAG_NODEFRAG)
1178 const_iv (FS_XFLAG_FILESTREAM)
1179 const_iv (FS_XFLAG_DAX)
1180 const_iv (FS_XFLAG_HASATTR)
1181
1182 const_iv (FIEMAP_FLAG_SYNC)
1183 const_iv (FIEMAP_FLAG_XATTR)
1184 const_iv (FIEMAP_FLAGS_COMPAT)
1185 const_iv (FIEMAP_EXTENT_LAST)
1186 const_iv (FIEMAP_EXTENT_UNKNOWN)
1187 const_iv (FIEMAP_EXTENT_DELALLOC)
1188 const_iv (FIEMAP_EXTENT_ENCODED)
1189 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1190 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1191 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1192 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1193 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1194 const_iv (FIEMAP_EXTENT_MERGED)
1195 const_iv (FIEMAP_EXTENT_SHARED)
1196
1197 const_iv (SPLICE_F_MOVE)
1198 const_iv (SPLICE_F_NONBLOCK)
1199 const_iv (SPLICE_F_MORE)
1200 const_iv (SPLICE_F_GIFT)
1201
1202 const_iv (EFD_CLOEXEC)
1203 const_iv (EFD_NONBLOCK)
1204 const_iv (EFD_SEMAPHORE)
1205
1206 const_iv (CLOCK_REALTIME)
1207 const_iv (CLOCK_MONOTONIC)
1208 const_iv (CLOCK_BOOTTIME)
1209 const_iv (CLOCK_REALTIME_ALARM)
1210 const_iv (CLOCK_BOOTTIME_ALARM)
1211
1212 const_iv (TFD_NONBLOCK)
1213 const_iv (TFD_CLOEXEC)
1214
1215 const_iv (TFD_TIMER_ABSTIME)
1216 const_iv (TFD_TIMER_CANCEL_ON_SET)
1217
1218 /* these are libeio constants, and are independent of gendef0 */
1219 const_eio (SEEK_SET)
1220 const_eio (SEEK_CUR)
1221 const_eio (SEEK_END)
1222
1223 const_eio (MCL_FUTURE)
1224 const_eio (MCL_CURRENT)
1225
1226 const_eio (MS_ASYNC)
1227 const_eio (MS_INVALIDATE)
1228 const_eio (MS_SYNC)
1229
1230 const_eio (MT_MODIFY)
1231
1232 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1233 const_eio (SYNC_FILE_RANGE_WRITE)
1234 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1235
1236 const_eio (FALLOC_FL_KEEP_SIZE)
1237 const_eio (FALLOC_FL_PUNCH_HOLE)
1238 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1239 const_eio (FALLOC_FL_ZERO_RANGE)
1240 const_eio (FALLOC_FL_INSERT_RANGE)
1241 const_eio (FALLOC_FL_UNSHARE_RANGE)
1242
1243 const_eio (RENAME_NOREPLACE)
1244 const_eio (RENAME_EXCHANGE)
1245 const_eio (RENAME_WHITEOUT)
1246
1247 const_eio (READDIR_DENTS)
1248 const_eio (READDIR_DIRS_FIRST)
1249 const_eio (READDIR_STAT_ORDER)
1250 const_eio (READDIR_FOUND_UNKNOWN)
1251
1252 const_eio (DT_UNKNOWN)
1253 const_eio (DT_FIFO)
1254 const_eio (DT_CHR)
1255 const_eio (DT_DIR)
1256 const_eio (DT_BLK)
1257 const_eio (DT_REG)
1258 const_eio (DT_LNK)
1259 const_eio (DT_SOCK)
1260 const_eio (DT_WHT)
787 } 1261 };
788 1262
789# elif __hpux 1263 aio_stash = gv_stashpv ("IO::AIO" , 1);
790 res = sendfile (ofd, ifd, offset, count, 0, 0); 1264 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1265 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1266 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
791 1267
792# elif __solaris 1268 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
793 { 1269 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
794 struct sendfilevec vec;
795 size_t sbytes;
796 1270
797 vec.sfv_fd = ifd; 1271 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
798 vec.sfv_flag = 0;
799 vec.sfv_off = offset;
800 vec.sfv_len = count;
801 1272
802 res = sendfilev (ofd, &vec, 1, &sbytes); 1273 reinit ();
1274}
803 1275
804 if (res < 0 && sbytes) 1276void
1277reinit ()
1278 PROTOTYPE:
1279
1280void
1281max_poll_reqs (unsigned int nreqs)
1282 PROTOTYPE: $
1283 CODE:
1284 eio_set_max_poll_reqs (nreqs);
1285
1286void
1287max_poll_time (double nseconds)
1288 PROTOTYPE: $
1289 CODE:
1290 eio_set_max_poll_time (nseconds);
1291
1292void
1293min_parallel (unsigned int nthreads)
1294 PROTOTYPE: $
1295 CODE:
1296 eio_set_min_parallel (nthreads);
1297
1298void
1299max_parallel (unsigned int nthreads)
1300 PROTOTYPE: $
1301 CODE:
1302 eio_set_max_parallel (nthreads);
1303
1304void
1305max_idle (unsigned int nthreads)
1306 PROTOTYPE: $
1307 CODE:
1308 eio_set_max_idle (nthreads);
1309
1310void
1311idle_timeout (unsigned int seconds)
1312 PROTOTYPE: $
1313 CODE:
1314 eio_set_idle_timeout (seconds);
1315
1316void
1317max_outstanding (unsigned int maxreqs)
1318 PROTOTYPE: $
1319 CODE:
1320 max_outstanding = maxreqs;
1321
1322void
1323aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1324 PPCODE:
1325{
1326 dREQ;
1327
1328 req->type = EIO_WD_OPEN;
1329 req_set_path1 (req, pathname);
1330
1331 REQ_SEND;
1332}
1333
1334void
1335aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1336 PPCODE:
1337{
1338 dREQ;
1339
1340 req->type = EIO_OPEN;
1341 req_set_path1 (req, pathname);
1342 req->int1 = flags;
1343 req->int2 = mode;
1344
1345 REQ_SEND;
1346}
1347
1348void
1349aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1350 ALIAS:
1351 aio_fsync = EIO_FSYNC
1352 aio_fdatasync = EIO_FDATASYNC
1353 aio_syncfs = EIO_SYNCFS
1354 PPCODE:
1355{
1356 int fd = s_fileno_croak (fh, 0);
1357 dREQ;
1358
1359 req->type = ix;
1360 req->sv1 = newSVsv (fh);
1361 req->int1 = fd;
1362
1363 REQ_SEND;
1364}
1365
1366void
1367aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1368 PPCODE:
1369{
1370 int fd = s_fileno_croak (fh, 0);
1371 dREQ;
1372
1373 req->type = EIO_SYNC_FILE_RANGE;
1374 req->sv1 = newSVsv (fh);
1375 req->int1 = fd;
1376 req->offs = offset;
805 res = sbytes; 1377 req->size = nbytes;
806 } 1378 req->int2 = flags;
807 1379
808# endif 1380 REQ_SEND;
1381}
1382
1383void
1384aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1385 PPCODE:
1386{
1387 int fd = s_fileno_croak (fh, 0);
1388 dREQ;
1389
1390 req->type = EIO_FALLOCATE;
1391 req->sv1 = newSVsv (fh);
1392 req->int1 = fd;
1393 req->int2 = mode;
1394 req->offs = offset;
1395 req->size = len;
1396
1397 REQ_SEND;
1398}
1399
1400void
1401aio_close (SV *fh, SV *callback = &PL_sv_undef)
1402 PPCODE:
1403{
1404 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1405 int fd = s_fileno_croak (fh, 0);
1406 dREQ;
1407
1408 if (expect_false (close_fd < 0))
1409 {
1410 int pipefd [2];
1411
1412 if (
1413#ifdef _WIN32
1414 _pipe (pipefd, 1, _O_BINARY) < 0
809#else 1415#else
810 res = -1; 1416 pipe (pipefd) < 0
811 errno = ENOSYS; 1417 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
812#endif 1418#endif
813 1419 || 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 { 1420 )
835 if (cnt && !res) res = -1; 1421 abort (); /*D*/
836 break;
837 }
838 1422
839 cnt = write (ofd, aio_buf, cnt); 1423 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 } 1424 }
909 }
910 1425
911 if (errno) 1426 req->type = EIO_DUP2;
912 res = -1; 1427 req->int1 = close_fd;
913 1428 req->sv2 = newSVsv (fh);
914 req->result = res; 1429 req->int2 = fd;
915}
916 1430
917/*****************************************************************************/ 1431 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} 1432}
1010 1433
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 1434void
1107min_parallel (nthreads) 1435aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1108 int nthreads 1436 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: $$$;$
1123 PPCODE:
1124{ 1437{
1438 int fd = s_fileno_croak (fh, 0);
1125 dREQ; 1439 dREQ;
1126 1440
1127 req->type = REQ_OPEN; 1441 req->type = EIO_SEEK;
1128 req->data = newSVsv (pathname); 1442 req->sv1 = newSVsv (fh);
1129 req->dataptr = SvPVbyte_nolen (req->data); 1443 req->int1 = fd;
1130 req->fd = flags; 1444 req->offs = SvVAL64 (offset);
1131 req->mode = mode; 1445 req->int2 = whence;
1132 1446
1133 REQ_SEND; 1447 REQ_SEND;
1134} 1448}
1135 1449
1136void 1450void
1137aio_close (fh,callback=&PL_sv_undef) 1451aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1138 SV * fh
1139 SV * callback
1140 PROTOTYPE: $;$
1141 ALIAS: 1452 ALIAS:
1142 aio_close = REQ_CLOSE
1143 aio_fsync = REQ_FSYNC
1144 aio_fdatasync = REQ_FDATASYNC
1145 PPCODE:
1146{
1147 dREQ;
1148
1149 req->type = ix;
1150 req->fh = newSVsv (fh);
1151 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153 REQ_SEND (req);
1154}
1155
1156void
1157aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158 SV * fh
1159 UV offset
1160 UV length
1161 SV * data
1162 UV dataoffset
1163 SV * callback
1164 ALIAS:
1165 aio_read = REQ_READ 1453 aio_read = EIO_READ
1166 aio_write = REQ_WRITE 1454 aio_write = EIO_WRITE
1167 PROTOTYPE: $$$$$;$
1168 PPCODE: 1455 PPCODE:
1169{ 1456{
1170 aio_req req;
1171 STRLEN svlen; 1457 STRLEN svlen;
1458 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172 char *svptr = SvPVbyte (data, svlen); 1459 char *svptr = SvPVbyte (data, svlen);
1173 1460 UV len = SvUV (length);
1174 SvUPGRADE (data, SVt_PV);
1175 SvPOK_on (data);
1176 1461
1177 if (dataoffset < 0) 1462 if (dataoffset < 0)
1178 dataoffset += svlen; 1463 dataoffset += svlen;
1179 1464
1180 if (dataoffset < 0 || dataoffset > svlen) 1465 if (dataoffset < 0 || dataoffset > svlen)
1181 croak ("data offset outside of string"); 1466 croak ("dataoffset outside of data scalar");
1182 1467
1183 if (ix == REQ_WRITE) 1468 if (ix == EIO_WRITE)
1184 { 1469 {
1185 /* write: check length and adjust. */ 1470 /* write: check length and adjust. */
1186 if (length < 0 || length + dataoffset > svlen) 1471 if (!SvOK (length) || len + dataoffset > svlen)
1187 length = svlen - dataoffset; 1472 len = svlen - dataoffset;
1188 } 1473 }
1189 else 1474 else
1190 { 1475 {
1191 /* read: grow scalar as necessary */ 1476 /* read: check type and grow scalar as necessary */
1477 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1192 svptr = SvGROW (data, length + dataoffset); 1478 svptr = sv_grow (data, len + dataoffset + 1);
1479 else if (SvCUR (data) < len + dataoffset)
1480 croak ("length + dataoffset outside of scalar, and cannot grow");
1193 } 1481 }
1194
1195 if (length < 0)
1196 croak ("length must not be negative");
1197 1482
1198 { 1483 {
1199 dREQ; 1484 dREQ;
1200 1485
1201 req->type = ix; 1486 req->type = ix;
1202 req->fh = newSVsv (fh); 1487 req->sv1 = newSVsv (fh);
1203 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1488 req->int1 = fd;
1204 : IoOFP (sv_2io (fh))); 1489 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205 req->offset = offset; 1490 req->size = len;
1206 req->length = length;
1207 req->data = SvREFCNT_inc (data); 1491 req->sv2 = SvREFCNT_inc (data);
1208 req->dataptr = (char *)svptr + dataoffset; 1492 req->ptr2 = (char *)svptr + dataoffset;
1493 req->stroffset = dataoffset;
1209 1494
1210 if (!SvREADONLY (data)) 1495 if (!SvREADONLY (data))
1211 { 1496 {
1212 SvREADONLY_on (data); 1497 SvREADONLY_on (data);
1213 req->data2ptr = (void *)data; 1498 req->flags |= FLAG_SV2_RO_OFF;
1214 } 1499 }
1215 1500
1216 REQ_SEND; 1501 REQ_SEND;
1217 } 1502 }
1218} 1503}
1219 1504
1220void 1505void
1221aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1506aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1222 SV * out_fh 1507 ALIAS:
1223 SV * in_fh 1508 aio_ioctl = EIO_IOCTL
1224 UV in_offset 1509 aio_fcntl = EIO_FCNTL
1225 UV length
1226 SV * callback
1227 PROTOTYPE: $$$$;$
1228 PPCODE: 1510 PPCODE:
1229{ 1511{
1230 dREQ; 1512 int fd = s_fileno_croak (fh, 0);
1513 char *svptr;
1231 1514
1232 req->type = REQ_SENDFILE; 1515 if (SvPOK (arg) || !SvNIOK (arg))
1233 req->fh = newSVsv (out_fh);
1234 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235 req->fh2 = newSVsv (in_fh);
1236 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237 req->offset = in_offset;
1238 req->length = length;
1239
1240 REQ_SEND;
1241}
1242
1243void
1244aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1245 SV * fh
1246 UV offset
1247 IV length
1248 SV * callback
1249 PROTOTYPE: $$$;$
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 { 1516 {
1277 req_free (req); 1517 STRLEN svlen;
1278 croak ("out of memory during aio_req->statdata allocation"); 1518 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1279 } 1519#ifdef IOCPARM_LEN
1520 STRLEN need = IOCPARM_LEN (request);
1521#else
1522 STRLEN need = 256;
1523#endif
1280 1524
1281 if (SvPOK (fh_or_path)) 1525 if (svlen < need)
1282 { 1526 svptr = SvGROW (arg, need);
1283 req->type = ix;
1284 req->data = newSVsv (fh_or_path);
1285 req->dataptr = SvPVbyte_nolen (req->data);
1286 } 1527 }
1287 else 1528 else
1529 svptr = (char *)SvIV (arg);
1530
1288 { 1531 {
1532 dREQ;
1533
1289 req->type = REQ_FSTAT; 1534 req->type = ix;
1290 req->fh = newSVsv (fh_or_path); 1535 req->sv1 = newSVsv (fh);
1291 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1536 req->int1 = fd;
1537 req->int2 = (long)request;
1538 req->sv2 = SvREFCNT_inc (arg);
1539 req->ptr2 = svptr;
1540
1541 REQ_SEND;
1292 } 1542 }
1543}
1544
1545void
1546aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1547 ALIAS:
1548 aio_readlink = EIO_READLINK
1549 aio_realpath = EIO_REALPATH
1550 PPCODE:
1551{
1552 dREQ;
1553
1554 req->type = ix;
1555 req_set_path1 (req, pathname);
1293 1556
1294 REQ_SEND; 1557 REQ_SEND;
1295} 1558}
1296 1559
1297void 1560void
1298aio_unlink (pathname,callback=&PL_sv_undef) 1561aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1299 SV * pathname 1562 PPCODE:
1300 SV * callback 1563{
1564 int ifd = s_fileno_croak (in_fh , 0);
1565 int ofd = s_fileno_croak (out_fh, 1);
1566 dREQ;
1567
1568 req->type = EIO_SENDFILE;
1569 req->sv1 = newSVsv (out_fh);
1570 req->int1 = ofd;
1571 req->sv2 = newSVsv (in_fh);
1572 req->int2 = ifd;
1573 req->offs = in_offset;
1574 req->size = length;
1575
1576 REQ_SEND;
1577}
1578
1579void
1580aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1581 PPCODE:
1582{
1583 int fd = s_fileno_croak (fh, 0);
1584 dREQ;
1585
1586 req->type = EIO_READAHEAD;
1587 req->sv1 = newSVsv (fh);
1588 req->int1 = fd;
1589 req->offs = offset;
1590 req->size = length;
1591
1592 REQ_SEND;
1593}
1594
1595void
1596aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1301 ALIAS: 1597 ALIAS:
1598 aio_stat = EIO_STAT
1599 aio_lstat = EIO_LSTAT
1600 aio_statvfs = EIO_STATVFS
1601 PPCODE:
1602{
1603 dREQ;
1604
1605 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1606
1607 REQ_SEND;
1608}
1609
1610UV
1611major (UV dev)
1612 ALIAS:
1613 minor = 1
1614 CODE:
1615 RETVAL = ix ? minor (dev) : major (dev);
1616 OUTPUT:
1617 RETVAL
1618
1619UV
1620makedev (UV maj, UV min)
1621 CODE:
1622 RETVAL = makedev (maj, min);
1623 OUTPUT:
1624 RETVAL
1625
1626void
1627aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1628 PPCODE:
1629{
1630 dREQ;
1631
1632 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1633 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1634 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1635
1636 REQ_SEND;
1637}
1638
1639void
1640aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1641 PPCODE:
1642{
1643 dREQ;
1644
1645 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1646 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1647
1648 REQ_SEND;
1649}
1650
1651void
1652aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1653 PPCODE:
1654{
1655 dREQ;
1656
1657 req->int2 = mode;
1658 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1659
1660 REQ_SEND;
1661}
1662
1663void
1664aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1665 PPCODE:
1666{
1667 dREQ;
1668
1669 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1670 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1671 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1672
1673 REQ_SEND;
1674}
1675
1676void
1677aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1678 PPCODE:
1679{
1680 dREQ;
1681
1682 req->type = EIO_READDIR;
1683 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1684
1685 if (flags & EIO_READDIR_DENTS)
1686 req->int1 |= EIO_READDIR_CUSTOM2;
1687
1688 req_set_path1 (req, pathname);
1689
1690 REQ_SEND;
1691}
1692
1693void
1694aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1695 PPCODE:
1696{
1697 dREQ;
1698
1699 req->type = EIO_MKDIR;
1700 req->int2 = mode;
1701 req_set_path1 (req, pathname);
1702
1703 REQ_SEND;
1704}
1705
1706void
1707aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1708 ALIAS:
1302 aio_unlink = REQ_UNLINK 1709 aio_unlink = EIO_UNLINK
1303 aio_rmdir = REQ_RMDIR 1710 aio_rmdir = EIO_RMDIR
1304 aio_readdir = REQ_READDIR 1711 aio_readdir = EIO_READDIR
1305 PPCODE: 1712 PPCODE:
1306{ 1713{
1307 dREQ; 1714 dREQ;
1308 1715
1309 req->type = ix; 1716 req->type = ix;
1310 req->data = newSVsv (pathname); 1717 req_set_path1 (req, pathname);
1311 req->dataptr = SvPVbyte_nolen (req->data); 1718
1312
1313 REQ_SEND; 1719 REQ_SEND;
1314} 1720}
1315 1721
1316void 1722void
1317aio_link (oldpath,newpath,callback=&PL_sv_undef) 1723aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1318 SV * oldpath
1319 SV * newpath
1320 SV * callback
1321 ALIAS: 1724 ALIAS:
1322 aio_link = REQ_LINK 1725 aio_link = EIO_LINK
1323 aio_symlink = REQ_SYMLINK 1726 aio_symlink = EIO_SYMLINK
1324 aio_rename = REQ_RENAME 1727 aio_rename = EIO_RENAME
1325 PPCODE: 1728 PPCODE:
1326{ 1729{
1730 eio_wd wd2 = 0;
1327 dREQ; 1731 dREQ;
1328 1732
1329 req->type = ix; 1733 req->type = ix;
1330 req->fh = newSVsv (oldpath); 1734 req_set_path1 (req, oldpath);
1331 req->data2ptr = SvPVbyte_nolen (req->fh); 1735 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1332 req->data = newSVsv (newpath); 1736 req->int3 = (long)wd2;
1333 req->dataptr = SvPVbyte_nolen (req->data);
1334 1737
1335 REQ_SEND; 1738 REQ_SEND;
1336} 1739}
1337 1740
1338void 1741void
1339aio_busy (delay,callback=&PL_sv_undef) 1742aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1340 double delay
1341 SV * callback
1342 PPCODE: 1743 PPCODE:
1343{ 1744{
1745 eio_wd wd2 = 0;
1344 dREQ; 1746 dREQ;
1345 1747
1346 req->type = REQ_BUSY; 1748 req->type = EIO_RENAME;
1347 req->fd = delay < 0. ? 0 : delay; 1749 req_set_path1 (req, oldpath);
1348 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1750 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1349 1751 req->int2 = flags;
1752 req->int3 = (long)wd2;
1753
1350 REQ_SEND; 1754 REQ_SEND;
1351} 1755}
1352 1756
1353void 1757void
1758aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1759 PPCODE:
1760{
1761 dREQ;
1762
1763 req->type = EIO_MKNOD;
1764 req->int2 = (mode_t)mode;
1765 req->offs = dev;
1766 req_set_path1 (req, pathname);
1767
1768 REQ_SEND;
1769}
1770
1771void
1772aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1773 ALIAS:
1774 aio_mtouch = EIO_MTOUCH
1775 aio_msync = EIO_MSYNC
1776 PPCODE:
1777{
1778 STRLEN svlen;
1779 char *svptr = SvPVbyte (data, svlen);
1780 UV len = SvUV (length);
1781
1782 if (flags < 0)
1783 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1784
1785 if (offset < 0)
1786 offset += svlen;
1787
1788 if (offset < 0 || offset > svlen)
1789 croak ("offset outside of scalar");
1790
1791 if (!SvOK (length) || len + offset > svlen)
1792 len = svlen - offset;
1793
1794 {
1795 dREQ;
1796
1797 req->type = ix;
1798 req->sv2 = SvREFCNT_inc (data);
1799 req->ptr2 = (char *)svptr + offset;
1800 req->size = len;
1801 req->int1 = flags;
1802
1803 REQ_SEND;
1804 }
1805}
1806
1807void
1808aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1809 PPCODE:
1810{
1811 STRLEN svlen;
1812 char *svptr = SvPVbyte (data, svlen);
1813 UV len = SvUV (length);
1814
1815 if (offset < 0)
1816 offset += svlen;
1817
1818 if (offset < 0 || offset > svlen)
1819 croak ("offset outside of scalar");
1820
1821 if (!SvOK (length) || len + offset > svlen)
1822 len = svlen - offset;
1823
1824 {
1825 dREQ;
1826
1827 req->type = EIO_MLOCK;
1828 req->sv2 = SvREFCNT_inc (data);
1829 req->ptr2 = (char *)svptr + offset;
1830 req->size = len;
1831
1832 REQ_SEND;
1833 }
1834}
1835
1836void
1837aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1838 PPCODE:
1839{
1840 dREQ;
1841
1842 req->type = EIO_MLOCKALL;
1843 req->int1 = flags;
1844
1845 REQ_SEND;
1846}
1847
1848void
1849aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1850 PPCODE:
1851{
1852 int fd = s_fileno_croak (fh, 0);
1853 dREQ;
1854
1855 req->type = EIO_CUSTOM;
1856 req->sv1 = newSVsv (fh);
1857 req->int1 = fd;
1858
1859 req->feed = fiemap;
1860#if HAVE_FIEMAP
1861 /* keep our fingers crossed that the next two types are 64 bit */
1862 req->offs = start;
1863 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1864 req->int2 = flags;
1865 req->int3 = SvOK (count) ? SvIV (count) : -1;
1866#endif
1867
1868 REQ_SEND;
1869}
1870
1871void
1872aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1873 PPCODE:
1874{
1875 char *svptr = 0;
1876
1877 sv_clear_foreign (data);
1878
1879 if (length) /* known length, directly read into scalar */
1880 {
1881 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1882 svptr = sv_grow (data, length + 1);
1883 else if (SvCUR (data) < length)
1884 croak ("length outside of scalar, and cannot grow");
1885 else
1886 svptr = SvPVbyte_nolen (data);
1887 }
1888
1889 {
1890 dREQ;
1891
1892 req->type = EIO_SLURP;
1893 req_set_path1 (req, pathname);
1894 req->offs = offset;
1895 req->size = length;
1896 req->sv2 = SvREFCNT_inc (data);
1897 req->ptr2 = svptr;
1898
1899 if (!SvREADONLY (data))
1900 {
1901 SvREADONLY_on (data);
1902 req->flags |= FLAG_SV2_RO_OFF;
1903 }
1904
1905 REQ_SEND;
1906 }
1907}
1908
1909void
1910aio_busy (double delay, SV *callback = &PL_sv_undef)
1911 PPCODE:
1912{
1913 dREQ;
1914
1915 req->type = EIO_BUSY;
1916 req->nv1 = delay < 0. ? 0. : delay;
1917
1918 REQ_SEND;
1919}
1920
1921void
1354aio_group (callback=&PL_sv_undef) 1922aio_group (SV *callback = &PL_sv_undef)
1355 SV * callback 1923 PPCODE:
1924{
1925 dREQ;
1926
1927 req->type = EIO_GROUP;
1928
1929 PUTBACK;
1930 req_submit (req);
1931 SPAGAIN;
1932
1933 XPUSHs (req_sv (req, aio_grp_stash));
1934}
1935
1936void
1937aio_nop (SV *callback = &PL_sv_undef)
1938 ALIAS:
1939 aio_nop = EIO_NOP
1940 aio_sync = EIO_SYNC
1941 PPCODE:
1942{
1943 dREQ;
1944
1945 req->type = ix;
1946
1947 REQ_SEND;
1948}
1949
1950int
1951aioreq_pri (int pri = NO_INIT)
1952 CODE:
1953 RETVAL = next_pri;
1954 if (items > 0)
1955 {
1956 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1957 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1958 next_pri = pri;
1959 }
1960 OUTPUT:
1961 RETVAL
1962
1963void
1964aioreq_nice (int nice = 0)
1965 CODE:
1966 nice = next_pri - nice;
1967 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1968 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1969 next_pri = nice;
1970
1971void
1972flush ()
1973 CODE:
1974 while (eio_nreqs ())
1975 {
1976 poll_wait ();
1977 poll_cb ();
1978 }
1979
1980int
1981poll ()
1982 CODE:
1983 poll_wait ();
1984 RETVAL = poll_cb ();
1985 OUTPUT:
1986 RETVAL
1987
1988int
1989poll_fileno ()
1990 CODE:
1991 RETVAL = s_epipe_fd (&respipe);
1992 OUTPUT:
1993 RETVAL
1994
1995int
1996poll_cb (...)
1997 PROTOTYPE:
1998 CODE:
1999 RETVAL = poll_cb ();
2000 OUTPUT:
2001 RETVAL
2002
2003void
2004poll_wait ()
2005 CODE:
2006 poll_wait ();
2007
2008int
2009nreqs ()
2010 CODE:
2011 RETVAL = eio_nreqs ();
2012 OUTPUT:
2013 RETVAL
2014
2015int
2016nready ()
2017 CODE:
2018 RETVAL = eio_nready ();
2019 OUTPUT:
2020 RETVAL
2021
2022int
2023npending ()
2024 CODE:
2025 RETVAL = eio_npending ();
2026 OUTPUT:
2027 RETVAL
2028
2029int
2030nthreads ()
2031 CODE:
2032 RETVAL = eio_nthreads ();
2033 OUTPUT:
2034 RETVAL
2035
2036int
2037fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2038 CODE:
2039 RETVAL = posix_fadvise (fh, offset, length, advice);
2040 OUTPUT:
2041 RETVAL
2042
2043IV
2044sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2045 CODE:
2046 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2047 OUTPUT:
2048 RETVAL
2049
2050void
2051mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2052 PPCODE:
2053 sv_clear_foreign (scalar);
2054{
2055 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2056 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2057 if (addr == (void *)-1)
2058 XSRETURN_NO;
2059
2060 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2061
2062 if (!(prot & PROT_WRITE))
2063 SvREADONLY_on (scalar);
2064
2065 XSRETURN_YES;
2066}
2067
2068void
2069munmap (SV *scalar)
2070 CODE:
2071 sv_clear_foreign (scalar);
2072
2073SV *
2074mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
2075 CODE:
2076{
2077 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2078 void *new;
2079
2080 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2081 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2082
2083 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2084
2085 RETVAL = &PL_sv_no;
2086
2087 if (new != (void *)-1)
2088 {
2089 RETVAL = new == (void *)mg->mg_ptr
2090 ? newSVpvn ("0 but true", 10)
2091 : &PL_sv_yes;
2092
2093 mg->mg_ptr = (char *)new;
2094 mg->mg_obj = (SV *)new_length;
2095
2096 SvPVX (scalar) = mg->mg_ptr;
2097 SvCUR_set (scalar, new_length);
2098 }
2099}
2100 OUTPUT:
2101 RETVAL
2102
2103int
2104madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2105 ALIAS:
2106 mprotect = 1
2107 CODE:
2108{
2109 STRLEN svlen;
2110 void *addr = SvPVbyte (scalar, svlen);
2111 STRLEN len = SvUV (length);
2112
2113 if (offset < 0)
2114 offset += svlen;
2115
2116 if (offset < 0 || offset > svlen)
2117 croak ("offset outside of scalar");
2118
2119 if (!SvOK (length) || len + offset > svlen)
2120 len = svlen - offset;
2121
2122 addr = (void *)(((intptr_t)addr) + offset);
2123 eio_page_align (&addr, &len);
2124
2125 switch (ix)
2126 {
2127 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2128 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2129 }
2130}
2131 OUTPUT:
2132 RETVAL
2133
2134int
2135munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2136 CODE:
2137{
2138 STRLEN svlen;
2139 void *addr = SvPVbyte (scalar, svlen);
2140 size_t len = SvUV (length);
2141
2142 if (offset < 0)
2143 offset += svlen;
2144
2145 if (offset < 0 || offset > svlen)
2146 croak ("offset outside of scalar");
2147
2148 if (!SvOK (length) || len + offset > svlen)
2149 len = svlen - offset;
2150
2151 addr = (void *)(((intptr_t)addr) + offset);
2152 eio_page_align (&addr, &len);
2153#if _POSIX_MEMLOCK_RANGE
2154 RETVAL = munlock (addr, len);
2155#else
2156 RETVAL = EIO_ENOSYS ();
2157#endif
2158}
2159 OUTPUT:
2160 RETVAL
2161
2162int
2163munlockall ()
2164 CODE:
2165#if _POSIX_MEMLOCK
2166 munlockall ();
2167#else
2168 RETVAL = EIO_ENOSYS ();
2169#endif
2170 OUTPUT:
2171 RETVAL
2172
2173int
2174splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2175 CODE:
2176{
2177#if HAVE_LINUX_SPLICE
2178 loff_t off_in_, off_out_;
2179 RETVAL = splice (
2180 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2181 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2182 length, flags
2183 );
2184#else
2185 RETVAL = EIO_ENOSYS ();
2186#endif
2187}
2188 OUTPUT:
2189 RETVAL
2190
2191int
2192tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2193 CODE:
2194#if HAVE_LINUX_SPLICE
2195 RETVAL = tee (rfh, wfh, length, flags);
2196#else
2197 RETVAL = EIO_ENOSYS ();
2198#endif
2199 OUTPUT:
2200 RETVAL
2201
2202int
2203pipesize (aio_rfd rfh, int new_size = -1)
2204 PROTOTYPE: $;$
2205 CODE:
2206#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2207 if (new_size >= 0)
2208 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2209 else
2210 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2211#else
2212 errno = ENOSYS;
2213 RETVAL = -1;
2214#endif
2215 OUTPUT:
2216 RETVAL
2217
2218void
2219pipe2 (int flags = 0)
1356 PROTOTYPE: ;$ 2220 PROTOTYPE: ;$
1357 PPCODE: 2221 PPCODE:
1358{ 2222{
1359 dREQ; 2223 int fd[2];
2224 int res;
1360 2225
1361 req->type = REQ_GROUP; 2226 if (flags)
1362 req_send (req); 2227#if HAVE_PIPE2
2228 res = pipe2 (fd, flags);
2229#else
2230 res = (errno = ENOSYS, -1);
2231#endif
2232 else
2233 res = pipe (fd);
1363 2234
1364 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2235 if (!res)
2236 {
2237 EXTEND (SP, 2);
2238 PUSHs (newmortalFH (fd[0], O_RDONLY));
2239 PUSHs (newmortalFH (fd[1], O_WRONLY));
2240 }
1365} 2241}
1366 2242
1367void 2243void
1368aio_nop (callback=&PL_sv_undef) 2244eventfd (unsigned int initval = 0, int flags = 0)
1369 SV * callback
1370 PPCODE: 2245 PPCODE:
1371{ 2246{
1372 dREQ; 2247 int fd;
1373 2248#if HAVE_EVENTFD
1374 req->type = REQ_NOP; 2249 fd = eventfd (initval, flags);
1375 2250#else
1376 REQ_SEND; 2251 fd = (errno = ENOSYS, -1);
2252#endif
2253
2254 XPUSHs (newmortalFH (fd, O_RDWR));
1377} 2255}
1378 2256
1379void 2257void
1380aioreq_pri (int pri = DEFAULT_PRI) 2258timerfd_create (int clockid, int flags = 0)
1381 CODE: 2259 PPCODE:
1382 if (pri < PRI_MIN) pri = PRI_MIN; 2260{
1383 if (pri > PRI_MAX) pri = PRI_MAX; 2261 int fd;
1384 next_pri = pri + PRI_BIAS; 2262#if HAVE_TIMERFD
2263 fd = timerfd_create (clockid, flags);
2264#else
2265 fd = (errno = ENOSYS, -1);
2266#endif
2267
2268 XPUSHs (newmortalFH (fd, O_RDWR));
2269}
1385 2270
1386void 2271void
1387aioreq_nice (int nice = 0) 2272timerfd_settime (SV *fh, int flags, NV interval, NV value)
1388 CODE: 2273 PPCODE:
1389 nice = next_pri - nice; 2274{
1390 if (nice < PRI_MIN) nice = PRI_MIN; 2275 int fd = s_fileno_croak (fh, 0);
1391 if (nice > PRI_MAX) nice = PRI_MAX; 2276#if HAVE_TIMERFD
1392 next_pri = nice + PRI_BIAS; 2277 int res;
2278 struct itimerspec its, ots;
1393 2279
2280 ts_set (&its.it_interval, interval);
2281 ts_set (&its.it_value , value);
2282 res = timerfd_settime (fd, flags, &its, &ots);
2283
2284 if (!res)
2285 {
2286 EXTEND (SP, 2);
2287 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2288 PUSHs (newSVnv (ts_get (&ots.it_value)));
2289 }
2290#else
2291 errno = ENOSYS;
2292#endif
2293}
2294
1394void 2295void
1395flush () 2296timerfd_gettime (SV *fh)
1396 PROTOTYPE: 2297 PPCODE:
2298{
2299 int fd = s_fileno_croak (fh, 0);
2300#if HAVE_TIMERFD
2301 int res;
2302 struct itimerspec ots;
2303 res = timerfd_gettime (fd, &ots);
2304
2305 if (!res)
2306 {
2307 EXTEND (SP, 2);
2308 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2309 PUSHs (newSVnv (ts_get (&ots.it_value)));
2310 }
2311#else
2312 errno = ENOSYS;
2313#endif
2314}
2315
2316UV
2317get_fdlimit ()
1397 CODE: 2318 CODE:
1398 while (nreqs) 2319#if HAVE_RLIMITS
2320 struct rlimit rl;
2321 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2322 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2323#endif
2324 XSRETURN_UNDEF;
2325 OUTPUT:
2326 RETVAL
2327
2328void
2329min_fdlimit (UV limit = 0x7fffffffU)
2330 CODE:
2331{
2332#if HAVE_RLIMITS
2333 struct rlimit rl;
2334 rlim_t orig_rlim_max;
2335 UV bit;
2336
2337 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2338 goto fail;
2339
2340 if (rl.rlim_cur == RLIM_INFINITY)
2341 XSRETURN_YES;
2342
2343 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2344
2345 if (rl.rlim_cur < limit)
1399 { 2346 {
1400 poll_wait (); 2347 rl.rlim_cur = limit;
1401 poll_cb (0); 2348
2349 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2350 rl.rlim_max = rl.rlim_cur;
1402 } 2351 }
1403 2352
1404void 2353 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
1405poll() 2354 XSRETURN_YES;
1406 PROTOTYPE: 2355
2356 if (errno == EPERM)
2357 {
2358 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2359 /* our limit overflows a system-wide limit */
2360 /* try an adaptive algorithm, but do not lower the hardlimit */
2361 rl.rlim_max = 0;
2362 for (bit = 0x40000000U; bit; bit >>= 1)
2363 {
2364 rl.rlim_max |= bit;
2365 rl.rlim_cur = rl.rlim_max;
2366
2367 /* nevr decrease the hard limit */
2368 if (rl.rlim_max < orig_rlim_max)
2369 break;
2370
2371 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2372 rl.rlim_max &= ~bit; /* too high, remove bit again */
2373 }
2374
2375 /* now, raise the soft limit to the max permitted */
2376 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2377 {
2378 rl.rlim_cur = rl.rlim_max;
2379 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2380 errno = EPERM;
2381 }
2382 }
2383#endif
2384 fail:
2385 XSRETURN_UNDEF;
2386}
2387
2388void _on_next_submit (SV *cb)
1407 CODE: 2389 CODE:
1408 if (nreqs) 2390 SvREFCNT_dec (on_next_submit);
1409 { 2391 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1410 poll_wait ();
1411 poll_cb (0);
1412 }
1413 2392
1414int 2393PROTOTYPES: DISABLE
1415poll_fileno() 2394
1416 PROTOTYPE: 2395MODULE = IO::AIO PACKAGE = IO::AIO::WD
2396
2397BOOT:
2398{
2399 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2400 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2401}
2402
2403void
2404DESTROY (SV *self)
1417 CODE: 2405 CODE:
1418 RETVAL = respipe [0]; 2406{
1419 OUTPUT: 2407 aio_wd wd = SvAIO_WD (self);
1420 RETVAL 2408#if HAVE_AT
1421 2409 {
1422int 2410 SV *callback = &PL_sv_undef;
1423poll_cb(...) 2411 dREQ; /* clobbers next_pri :/ */
1424 PROTOTYPE: 2412 next_pri = req->pri; /* restore next_pri */
1425 CODE: 2413 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1426 RETVAL = poll_cb (0); 2414 req->type = EIO_WD_CLOSE;
1427 OUTPUT: 2415 req->wd = wd;
1428 RETVAL 2416 REQ_SEND;
1429 2417 }
1430int 2418#else
1431poll_some(int max = 0) 2419 eio_wd_close_sync (wd);
1432 PROTOTYPE: $ 2420#endif
1433 CODE: 2421}
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 2422
1455MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2423MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456 2424
1457void 2425void
1458cancel (aio_req_ornot req) 2426cancel (aio_req_ornot req)
1459 CODE: 2427 CODE:
1460 req_cancel (req); 2428 eio_cancel (req);
1461 2429
1462void 2430void
1463cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2431cb (aio_req_ornot req, SV *callback = NO_INIT)
1464 CODE: 2432 PPCODE:
2433{
2434 if (GIMME_V != G_VOID)
2435 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2436
2437 if (items > 1)
2438 {
2439 SV *cb_cv = get_cb (callback);
2440
1465 SvREFCNT_dec (req->callback); 2441 SvREFCNT_dec (req->callback);
1466 req->callback = newSVsv (callback); 2442 req->callback = SvREFCNT_inc (cb_cv);
2443 }
2444}
1467 2445
1468MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2446MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469 2447
1470void 2448void
1471add (aio_req grp, ...) 2449add (aio_req grp, ...)
1472 PPCODE: 2450 PPCODE:
1473{ 2451{
1474 int i; 2452 int i;
1475 aio_req req;
1476 2453
1477 if (grp->fd == 2) 2454 if (grp->int1 == 2)
1478 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2455 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479 2456
1480 for (i = 1; i < items; ++i ) 2457 for (i = 1; i < items; ++i )
1481 { 2458 {
2459 aio_req req;
2460
1482 if (GIMME_V != G_VOID) 2461 if (GIMME_V != G_VOID)
1483 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2462 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484 2463
1485 req = SvAIO_REQ (ST (i)); 2464 req = SvAIO_REQ (ST (i));
1486 2465
1487 if (req) 2466 if (req)
1488 { 2467 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 } 2468 }
1501} 2469}
1502 2470
1503void 2471void
1504cancel_subs (aio_req_ornot req) 2472cancel_subs (aio_req_ornot req)
… …
1508void 2476void
1509result (aio_req grp, ...) 2477result (aio_req grp, ...)
1510 CODE: 2478 CODE:
1511{ 2479{
1512 int i; 2480 int i;
2481 AV *av;
2482
2483 grp->errorno = errno;
2484
1513 AV *av = newAV (); 2485 av = newAV ();
2486 av_extend (av, items - 1);
1514 2487
1515 for (i = 1; i < items; ++i ) 2488 for (i = 1; i < items; ++i )
1516 av_push (av, newSVsv (ST (i))); 2489 av_push (av, newSVsv (ST (i)));
1517 2490
1518 SvREFCNT_dec (grp->data); 2491 SvREFCNT_dec (grp->sv1);
1519 grp->data = (SV *)av; 2492 grp->sv1 = (SV *)av;
1520} 2493}
2494
2495void
2496errno (aio_req grp, int errorno = errno)
2497 CODE:
2498 grp->errorno = errorno;
1521 2499
1522void 2500void
1523limit (aio_req grp, int limit) 2501limit (aio_req grp, int limit)
1524 CODE: 2502 CODE:
1525 grp->fd2 = limit; 2503 eio_grp_limit (grp, limit);
1526 aio_grp_feed (grp);
1527 2504
1528void 2505void
1529feed (aio_req grp, SV *callback=&PL_sv_undef) 2506feed (aio_req grp, SV *callback = &PL_sv_undef)
1530 CODE: 2507 CODE:
1531{ 2508{
1532 SvREFCNT_dec (grp->fh2); 2509 SvREFCNT_dec (grp->sv2);
1533 grp->fh2 = newSVsv (callback); 2510 grp->sv2 = newSVsv (callback);
2511 grp->feed = aio_grp_feed;
1534 2512
1535 if (grp->fd2 <= 0) 2513 if (grp->int2 <= 0)
1536 grp->fd2 = 2; 2514 grp->int2 = 2;
1537 2515
1538 aio_grp_feed (grp); 2516 eio_grp_limit (grp, grp->int2);
1539} 2517}
1540 2518

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