ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/IO-AIO/AIO.xs
(Generate patch)

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.259 by root, Sun Jul 22 20:39:19 2018 UTC

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

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines