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 1.76 by root, Thu Oct 26 12:38:04 2006 UTC vs.
Revision 1.253 by root, Tue Feb 20 04:32:59 2018 UTC

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

Diff Legend

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