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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 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
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#include "schmorp.h"
17
18#include <pthread.h>
19 10
20#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
21#include <errno.h> 13#include <errno.h>
22#include <sys/time.h>
23#include <sys/select.h>
24#include <sys/types.h> 14#include <sys/types.h>
25#include <sys/stat.h> 15#include <sys/stat.h>
26#include <limits.h> 16#include <limits.h>
27#include <unistd.h>
28#include <fcntl.h> 17#include <fcntl.h>
29#include <signal.h>
30#include <sched.h> 18#include <sched.h>
31 19
32#if HAVE_SENDFILE 20#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> 21# include <sys/mman.h>
38# 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
39# include <sys/socket.h> 86 #include <sys/time.h>
40# elif __solaris /* not yet */
41# 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
42# else 155# else
43# error sendfile support requested but not available 156# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44# endif 157# endif
45#endif 158#endif
46 159
47/* used for struct dirent, AIX doesn't provide it */ 160/* defines all sorts of constants to 0 unless they are already defined */
48#ifndef NAME_MAX 161/* also provides const_iv_ and const_niv_ macros for them */
49# define NAME_MAX 4096 162#include "def0.h"
50#endif
51 163
52#if __ia64 164#ifndef makedev
53# define STACKSIZE 65536 165# define makedev(maj,min) (((maj) << 8) | (min))
54#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55# define STACKSIZE PTHREAD_STACK_MIN
56#else
57# define STACKSIZE 16384
58#endif 166#endif
167#ifndef major
168# define major(dev) ((dev) >> 8)
169#endif
170#ifndef minor
171# define minor(dev) ((dev) & 0xff)
172#endif
59 173
60/* buffer size for various temporary buffers */ 174#if PAGESIZE <= 0
61#define AIO_BUFSIZE 65536 175# define PAGESIZE sysconf (_SC_PAGESIZE)
176#endif
62 177
63#define dBUF \ 178/*****************************************************************************/
64 char *aio_buf; \ 179
65 LOCK (wrklock); \ 180#if !_POSIX_MAPPED_FILES
66 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 181# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
67 UNLOCK (wrklock); \ 182# define munmap(addr,length) EIO_ENOSYS ()
68 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
69 return -1; 209 return 0;
210}
70 211
71enum { 212static MGVTBL mmap_vtbl = {
72 REQ_QUIT, 213 0, 0, 0, 0, mmap_free
73 REQ_OPEN, REQ_CLOSE,
74 REQ_READ, REQ_WRITE, REQ_READAHEAD,
75 REQ_SENDFILE,
76 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79 REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK,
81 REQ_GROUP, REQ_NOP,
82 REQ_BUSY,
83}; 214};
84 215
85#define AIO_REQ_KLASS "IO::AIO::REQ" 216static int ecb_cold
86#define AIO_GRP_KLASS "IO::AIO::GRP" 217sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88typedef struct aio_cb
89{ 218{
90 struct aio_cb *volatile next; 219 free (mg->mg_ptr);
220 mg->mg_obj = 0; /* just in case */
91 221
92 SV *data, *callback; 222 SvREADONLY_off (sv);
93 SV *fh, *fh2;
94 void *dataptr, *data2ptr;
95 Stat_t *statdata;
96 off_t offset;
97 size_t length;
98 ssize_t result;
99 223
100 STRLEN dataoffset; 224 if (SvPVX (sv) != mg->mg_ptr)
101 int type; 225 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102 int fd, fd2;
103 int errorno;
104 mode_t mode; /* open */
105 226
106 unsigned char flags; 227 SvCUR_set (sv, 0);
107 unsigned char pri; 228 SvPVX (sv) = 0;
229 SvOK_off (sv);
108 230
109 SV *self; /* the perl counterpart of this request, if any */ 231 return 0;
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 232}
111} aio_cb;
112 233
113enum { 234static MGVTBL sysfree_vtbl = {
114 FLAG_CANCELLED = 0x01, 235 0, 0, 0, 0, sysfree_free
115}; 236};
116 237
117typedef aio_cb *aio_req; 238/*****************************************************************************/
118typedef aio_cb *aio_req_ornot;
119 239
120enum { 240/* helper: set scalar to foreign ptr with custom free */
121 PRI_MIN = -4, 241static void
122 PRI_MAX = 4, 242sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
123
124 DEFAULT_PRI = 0,
125 PRI_BIAS = -PRI_MIN,
126 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127};
128
129static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131static int started, wanted;
132static volatile int nreqs;
133static int max_outstanding = 1<<30;
134static int respipe [2];
135
136#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138#else
139# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140#endif
141
142#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145/* worker threasd management */
146static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148typedef struct worker {
149 /* locked by wrklock */
150 struct worker *prev, *next;
151
152 pthread_t tid;
153
154 /* locked by reslock, reqlock or wrklock */
155 aio_req req; /* currently processed request */
156 void *dbuf;
157 DIR *dirp;
158} worker;
159
160static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162static void worker_clear (worker *wrk)
163{ 243{
164 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 (;;)
165 { 319 {
166 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) */
167 wrk->dirp = 0; 321 char scratch[3072];
168 } 322 struct fiemap *incmap = (struct fiemap *)scratch;
169 323
170 if (wrk->dbuf) 324 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
171 { 325 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
172 free (wrk->dbuf); 326 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
173 wrk->dbuf = 0; 327 incmap->fm_flags = fiemap->fm_flags;
174 } 328 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
175}
176 329
177static void worker_free (worker *wrk) 330 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
178{
179 wrk->next->prev = wrk->prev;
180 wrk->prev->next = wrk->next;
181
182 free (wrk);
183}
184
185static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189/*
190 * a somewhat faster data structure might be nice, but
191 * with 8 priorities this actually needs <20 insns
192 * per shift, the most expensive operation.
193 */
194typedef struct {
195 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196 int size;
197} reqq;
198
199static reqq req_queue;
200static reqq res_queue;
201
202int reqq_push (reqq *q, aio_req req)
203{
204 int pri = req->pri;
205 req->next = 0;
206
207 if (q->qe[pri])
208 {
209 q->qe[pri]->next = req;
210 q->qe[pri] = req;
211 }
212 else
213 q->qe[pri] = q->qs[pri] = req;
214
215 return q->size++;
216}
217
218aio_req reqq_shift (reqq *q)
219{
220 int pri;
221
222 if (!q->size)
223 return 0; 331 return;
224 332
225 --q->size; 333 if (!incmap->fm_mapped_extents)
334 goto done;
226 335
227 for (pri = NUM_PRI; pri--; ) 336 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
228 { 337 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
229 aio_req req = q->qs[pri]; 338 errno = ENOMEM;
230
231 if (req) 339 if (!fiemap)
340 return;
341
342 req->ptr1 = fiemap;
343
344 for (count = 0; count < incmap->fm_mapped_extents; ++count)
232 { 345 {
233 if (!(q->qs[pri] = req->next)) 346 struct fiemap_extent *e = incmap->fm_extents + count;
234 q->qe[pri] = 0;
235 347
236 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
237 } 356 }
238 } 357 }
239 358
240 abort (); 359done:
241} 360 req->result = 0;
242 361
362#else
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
383static void req_destroy (aio_req req);
243static void req_invoke (aio_req req); 384static void req_cancel (aio_req req);
244static void req_free (aio_req req); 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}
245 399
246/* must be called at most once */ 400/* must be called at most once */
247static SV *req_sv (aio_req req, const char *klass) 401static SV *
402req_sv (aio_req req, HV *stash)
248{ 403{
249 if (!req->self) 404 if (!req->self)
250 { 405 {
251 req->self = (SV *)newHV (); 406 req->self = (SV *)newHV ();
252 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 407 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
253 } 408 }
254 409
255 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 410 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
256} 411}
257 412
258static 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)
259{ 421{
260 MAGIC *mg; 422 MAGIC *mg;
261 423
262 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")))
263 croak ("object of class " AIO_REQ_KLASS " expected"); 429 croak ("object of class IO::AIO::REQ expected");
264 430
265 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 431 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
266 432
267 return mg ? (aio_req)mg->mg_ptr : 0; 433 return mg ? (aio_req)mg->mg_ptr : 0;
268} 434}
269 435
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
270static void aio_grp_feed (aio_req grp) 473aio_grp_feed (aio_req grp)
271{ 474{
272 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 475 if (grp->sv2 && SvOK (grp->sv2))
273 { 476 {
274 int old_len = grp->length;
275
276 if (grp->fh2 && SvOK (grp->fh2))
277 {
278 dSP; 477 dSP;
279 478
280 ENTER; 479 ENTER;
281 SAVETMPS; 480 SAVETMPS;
282 PUSHMARK (SP); 481 PUSHMARK (SP);
283 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 482 XPUSHs (req_sv (grp, aio_grp_stash));
284 PUTBACK; 483 PUTBACK;
285 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 484 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286 SPAGAIN; 485 SPAGAIN;
287 FREETMPS; 486 FREETMPS;
288 LEAVE; 487 LEAVE;
289 }
290
291 /* stop if no progress has been made */
292 if (old_len == grp->length)
293 {
294 SvREFCNT_dec (grp->fh2);
295 grp->fh2 = 0;
296 break;
297 }
298 } 488 }
299} 489}
300 490
301static void aio_grp_dec (aio_req grp) 491static void
492req_submit (eio_req *req)
302{ 493{
303 --grp->length; 494 eio_submit (req);
304 495
305 /* call feeder, if applicable */ 496 if (expect_false (on_next_submit))
306 aio_grp_feed (grp);
307
308 /* finish, if done */
309 if (!grp->length && grp->fd)
310 { 497 {
311 req_invoke (grp); 498 dSP;
312 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);
313 } 506 }
314} 507}
315 508
316static void poll_wait () 509static int
510req_invoke (eio_req *req)
317{ 511{
318 fd_set rfd; 512 if (req->flags & FLAG_SV2_RO_OFF)
513 SvREADONLY_off (req->sv2);
319 514
320 while (nreqs) 515 if (!EIO_CANCELLED (req) && req->callback)
321 { 516 {
322 int size;
323#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324 LOCK (reslock);
325#endif
326 size = res_queue.size;
327#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328 UNLOCK (reslock);
329#endif
330
331 if (size)
332 return;
333
334 FD_ZERO(&rfd);
335 FD_SET(respipe [0], &rfd);
336
337 select (respipe [0] + 1, &rfd, 0, 0, 0);
338 }
339}
340
341static void req_invoke (aio_req req)
342{
343 dSP; 517 dSP;
344 518 static SV *sv_result_cache; /* caches the result integer SV */
345 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 519 SV *sv_result;
346 {
347 errno = req->errorno;
348 520
349 ENTER; 521 ENTER;
350 SAVETMPS; 522 SAVETMPS;
351 PUSHMARK (SP); 523 PUSHMARK (SP);
352 EXTEND (SP, 1); 524 EXTEND (SP, 1);
353 525
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
354 switch (req->type) 539 switch (req->type)
355 { 540 {
541 case EIO_WD_OPEN:
542 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
543 break;
544
356 case REQ_READDIR: 545 case EIO_READDIR:
357 { 546 {
358 SV *rv = &PL_sv_undef; 547 SV *rv = &PL_sv_undef;
359 548
360 if (req->result >= 0) 549 if (req->result >= 0)
361 { 550 {
362 int i; 551 int i;
363 char *buf = req->data2ptr; 552 char *names = (char *)req->ptr2;
553 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364 AV *av = newAV (); 554 AV *av = newAV ();
365 555
366 av_extend (av, req->result - 1); 556 av_extend (av, req->result - 1);
367 557
368 for (i = 0; i < req->result; ++i) 558 for (i = 0; i < req->result; ++i)
369 { 559 {
370 SV *sv = newSVpv (buf, 0); 560 if (req->int1 & EIO_READDIR_DENTS)
561 {
562 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371 563
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
372 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);
373 buf += SvCUR (sv) + 1; 592 names += SvCUR (name) + 1;
593 }
374 } 594 }
375 595
376 rv = sv_2mortal (newRV_noinc ((SV *)av)); 596 rv = sv_2mortal (newRV_noinc ((SV *)av));
377 } 597 }
378 598
379 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))));
380 } 603 }
381 break; 604 break;
382 605
383 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:
384 { 612 {
385 /* convert fd to fh */ 613 SV *rv = &PL_sv_undef;
386 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));
387 625
388 PUSHs (sv_2mortal (newSViv (req->result))); 626 rv = sv_2mortal (newRV_noinc ((SV *)hv));
389 PUTBACK;
390 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
391 SPAGAIN;
392 627
393 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
394 641
395 PUSHMARK (SP); 642 PUSHs (rv);
396 XPUSHs (sv_2mortal (fh));
397 } 643 }
644
398 break; 645 break;
399 646
400 case REQ_GROUP: 647 case EIO_GROUP:
401 req->fd = 2; /* mark group as finished */ 648 req->int1 = 2; /* mark group as finished */
402 649
403 if (req->data) 650 if (req->sv1)
404 { 651 {
405 int i; 652 int i;
406 AV *av = (AV *)req->data; 653 AV *av = (AV *)req->sv1;
407 654
408 EXTEND (SP, AvFILL (av) + 1); 655 EXTEND (SP, AvFILL (av) + 1);
409 for (i = 0; i <= AvFILL (av); ++i) 656 for (i = 0; i <= AvFILL (av); ++i)
410 PUSHs (*av_fetch (av, i, 0)); 657 PUSHs (*av_fetch (av, i, 0));
411 } 658 }
412 break; 659 break;
413 660
414 case REQ_NOP: 661 case EIO_NOP:
415 case REQ_BUSY: 662 case EIO_BUSY:
416 break; 663 break;
417 664
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
418 default: 766 default:
419 PUSHs (sv_2mortal (newSViv (req->result))); 767 PUSHs (sv_result);
420 break; 768 break;
421 } 769 }
422 770
771 errno = req->errorno;
423 772
424 PUTBACK; 773 PUTBACK;
425 call_sv (req->callback, G_VOID | G_EVAL); 774 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426 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;
427 781
428 FREETMPS; 782 FREETMPS;
429 LEAVE; 783 LEAVE;
784
785 PUTBACK;
430 } 786 }
431 787
432 if (req->grp) 788 return !!SvTRUE (ERRSV);
433 {
434 aio_req grp = req->grp;
435
436 /* unlink request */
437 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
438 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
439
440 if (grp->grp_first == req)
441 grp->grp_first = req->grp_next;
442
443 aio_grp_dec (grp);
444 }
445
446 if (SvTRUE (ERRSV))
447 {
448 req_free (req);
449 croak (0);
450 }
451} 789}
452 790
453static void req_free (aio_req req) 791static void
792req_destroy (aio_req req)
454{ 793{
455 if (req->self) 794 if (req->self)
456 { 795 {
457 sv_unmagic (req->self, PERL_MAGIC_ext); 796 sv_unmagic (req->self, PERL_MAGIC_ext);
458 SvREFCNT_dec (req->self); 797 SvREFCNT_dec (req->self);
459 } 798 }
460 799
461 SvREFCNT_dec (req->data);
462 SvREFCNT_dec (req->fh); 800 SvREFCNT_dec (req->sv1);
463 SvREFCNT_dec (req->fh2); 801 SvREFCNT_dec (req->sv2);
802 SvREFCNT_dec (req->sv3);
803 SvREFCNT_dec (req->sv4);
464 SvREFCNT_dec (req->callback); 804 SvREFCNT_dec (req->callback);
465 Safefree (req->statdata);
466 805
467 if (req->type == REQ_READDIR)
468 free (req->data2ptr);
469
470 Safefree (req); 806 free (req);
471} 807}
472 808
473static void req_cancel (aio_req req) 809static void
810req_cancel_subs (aio_req grp)
474{ 811{
475 req->flags |= FLAG_CANCELLED;
476
477 if (req->type == REQ_GROUP) 812 if (grp->type != EIO_GROUP)
813 return;
814
815 SvREFCNT_dec (grp->sv2);
816 grp->sv2 = 0;
817
818 eio_grp_cancel (grp);
819}
820
821static void ecb_cold
822create_respipe (void)
823{
824 if (s_epipe_renew (&respipe))
825 croak ("IO::AIO: unable to initialize result pipe");
826}
827
828static void
829poll_wait (void)
830{
831 while (eio_nreqs ())
478 { 832 {
479 aio_req sub; 833 int size;
480 834
481 for (sub = req->grp_first; sub; sub = sub->grp_next) 835 X_LOCK (EIO_POOL->reslock);
482 req_cancel (sub); 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);
483 } 845 }
484} 846}
485 847
486static int poll_cb () 848static int
849poll_cb (void)
487{ 850{
488 dSP;
489 int count = 0;
490 int do_croak = 0;
491 aio_req req;
492
493 for (;;) 851 for (;;)
494 { 852 {
495 LOCK (reslock); 853 int res = eio_poll ();
496 req = reqq_shift (&res_queue);
497 854
498 if (req) 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;
887 aio_req req;
888 int req_pri = next_pri;
889 next_pri = EIO_PRI_DEFAULT;
890
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)))
918 {
919 SV *rv = SvRV (path);
920 SV *wdob;
921
922 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
499 { 923 {
500 if (!res_queue.size) 924 path = AvARRAY (rv)[1];
925 wdob = AvARRAY (rv)[0];
926
927 if (SvOK (wdob))
501 { 928 {
502 /* read any signals sent by the worker threads */ 929 *wd = SvAIO_WD (wdob);
503 char buf [32]; 930 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
504 while (read (respipe [0], buf, 32) == 32)
505 ;
506 } 931 }
932 else
933 *wd = EIO_INVALID_WD;
507 } 934 }
508 935 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
509 UNLOCK (reslock);
510
511 if (!req)
512 break;
513
514 --nreqs;
515
516 if (req->type == REQ_QUIT)
517 started--;
518 else if (req->type == REQ_GROUP && req->length)
519 { 936 {
520 req->fd = 1; /* mark request as delayed */ 937 *wd = (aio_wd)(long)SvIVX (rv);
521 continue; 938 *wdsv = SvREFCNT_inc_NN (rv);
939 *ptr = ".";
940 return; /* path set to "." */
522 } 941 }
523 else 942 else
524 { 943 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
525 if (req->type == REQ_READ)
526 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529 SvREADONLY_off (req->data);
530
531 if (req->statdata)
532 {
533 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534 PL_laststatval = req->result;
535 PL_statcache = *(req->statdata);
536 }
537
538 req_invoke (req);
539
540 count++;
541 }
542
543 req_free (req);
544 } 944 }
545 945
546 return count; 946 *pathsv = newSVsv (path);
947 *ptr = SvPVbyte_nolen (*pathsv);
547} 948}
548 949
549static void *aio_proc(void *arg); 950static void ecb_noinline
550 951req_set_path1 (aio_req req, SV *path)
551static void start_thread (void)
552{ 952{
553 worker *wrk = calloc (1, sizeof (worker)); 953 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
954}
554 955
555 if (!wrk) 956static void ecb_noinline
556 croak ("unable to allocate worker thread data"); 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;
557 960
558 sigset_t fullsigset, oldsigset; 961 switch (SvTYPE (rv))
559 pthread_attr_t attr;
560
561 pthread_attr_init (&attr);
562 pthread_attr_setstacksize (&attr, STACKSIZE);
563 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
564
565 sigfillset (&fullsigset);
566
567 LOCK (wrklock);
568 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
569
570 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
571 { 962 {
572 wrk->prev = &wrk_first; 963 case SVt_PVIO:
573 wrk->next = wrk_first.next; 964 case SVt_PVLV:
574 wrk_first.next->prev = wrk; 965 case SVt_PVGV:
575 wrk_first.next = wrk; 966 req->type = type_fh;
576 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;
577 } 975 }
578 else
579 free (wrk);
580
581 sigprocmask (SIG_SETMASK, &oldsigset, 0);
582 UNLOCK (wrklock);
583} 976}
584 977
585static void req_send (aio_req req) 978XS(boot_IO__AIO) ecb_cold;
586{
587 while (started < wanted && nreqs >= started)
588 start_thread ();
589 979
590 ++nreqs; 980MODULE = IO::AIO PACKAGE = IO::AIO
591 981
592 LOCK (reqlock); 982PROTOTYPES: ENABLE
593 reqq_push (&req_queue, req);
594 pthread_cond_signal (&reqwait);
595 UNLOCK (reqlock);
596 983
597 if (nreqs > max_outstanding) 984BOOT:
598 for (;;)
599 {
600 poll_cb ();
601
602 if (nreqs <= max_outstanding)
603 break;
604
605 poll_wait ();
606 }
607}
608
609static void end_thread (void)
610{ 985{
611 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 },
612 993
613 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)
614 999
615 req->type = REQ_QUIT; 1000 /* for lseek */
616 req->pri = PRI_MAX + PRI_BIAS; 1001 const_iv (SEEK_DATA)
1002 const_iv (SEEK_HOLE)
617 1003
618 req_send (req); 1004 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
619} 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)
620 1010
621static void min_parallel (int nthreads) 1011 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
622{ 1012 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
623 if (wanted < nthreads) 1013 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
624 wanted = nthreads; 1014 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
625} 1015 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
626 1016
627static void max_parallel (int nthreads) 1017 /* the second block will be 0 when missing */
628{ 1018 const_iv (O_RDONLY)
629 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)
630 1025
631 if (wanted > nthreads) 1026 const_iv (O_ASYNC)
632 wanted = nthreads; 1027 const_iv (O_DIRECT)
1028 const_iv (O_NOATIME)
633 1029
634 while (cur > wanted) 1030 const_iv (O_CLOEXEC)
635 { 1031 const_iv (O_NOCTTY)
636 end_thread (); 1032 const_iv (O_NOFOLLOW)
637 cur--; 1033 const_iv (O_NONBLOCK)
638 } 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)
639 1043
640 while (started > wanted) 1044 const_iv (S_IFIFO)
641 { 1045 const_iv (S_IFCHR)
642 poll_wait (); 1046 const_iv (S_IFBLK)
643 poll_cb (); 1047 const_iv (S_IFLNK)
644 } 1048 const_iv (S_IFREG)
645} 1049 const_iv (S_IFDIR)
1050 const_iv (S_IFWHT)
1051 const_iv (S_IFSOCK)
1052 const_iv (S_IFMT)
646 1053
647static void create_pipe () 1054 const_iv (ST_RDONLY)
648{ 1055 const_iv (ST_NOSUID)
649 if (pipe (respipe)) 1056 const_iv (ST_NODEV)
650 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)
651 1066
652 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 1067 const_iv (PROT_NONE)
653 croak ("cannot set result pipe to nonblocking mode"); 1068 const_iv (PROT_EXEC)
1069 const_iv (PROT_READ)
1070 const_iv (PROT_WRITE)
654 1071
655 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 1072 const_iv (MAP_PRIVATE)
656 croak ("cannot set result pipe to nonblocking mode"); 1073 const_iv (MAP_SHARED)
657} 1074 const_iv (MAP_FIXED)
1075 const_iv (MAP_ANONYMOUS)
658 1076
659/*****************************************************************************/ 1077 /* linuxish */
660/* 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)
661 1086
662#if !HAVE_PREADWRITE 1087 const_iv (F_DUPFD_CLOEXEC)
663# define pread aio_pread
664# define pwrite aio_pwrite
665 1088
666/* 1089 const_iv (F_OFD_GETLK)
667 * make our pread/pwrite safe against themselves, but not against 1090 const_iv (F_OFD_SETLK)
668 * normal read/write by using a mutex. slows down execution a lot, 1091 const_iv (F_OFD_GETLKW)
669 * but that's your problem, not mine.
670 */
671static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
672 1092
673static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 1093 const_iv (FIFREEZE)
674{ 1094 const_iv (FITHAW)
675 ssize_t res; 1095 const_iv (FITRIM)
676 off_t ooffset; 1096 const_iv (FICLONE)
1097 const_iv (FICLONERANGE)
1098 const_iv (FIDEDUPERANGE)
677 1099
678 LOCK (preadwritelock); 1100 const_iv (FS_IOC_GETFLAGS)
679 ooffset = lseek (fd, 0, SEEK_CUR); 1101 const_iv (FS_IOC_SETFLAGS)
680 lseek (fd, offset, SEEK_SET); 1102 const_iv (FS_IOC_GETVERSION)
681 res = read (fd, buf, count); 1103 const_iv (FS_IOC_SETVERSION)
682 lseek (fd, ooffset, SEEK_SET); 1104 const_iv (FS_IOC_FIEMAP)
683 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)
684 1110
685 return res; 1111 const_iv (FS_KEY_DESCRIPTOR_SIZE)
686}
687 1112
688static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1113 const_iv (FS_SECRM_FL)
689{ 1114 const_iv (FS_UNRM_FL)
690 ssize_t res; 1115 const_iv (FS_COMPR_FL)
691 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)
692 1132
693 LOCK (preadwritelock); 1133 const_iv (FS_XFLAG_REALTIME)
694 ooffset = lseek (fd, 0, SEEK_CUR); 1134 const_iv (FS_XFLAG_PREALLOC)
695 lseek (fd, offset, SEEK_SET); 1135 const_iv (FS_XFLAG_IMMUTABLE)
696 res = write (fd, buf, count); 1136 const_iv (FS_XFLAG_APPEND)
697 lseek (fd, offset, SEEK_SET); 1137 const_iv (FS_XFLAG_SYNC)
698 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)
699 1149
700 return res; 1150 const_iv (FIEMAP_FLAG_SYNC)
701} 1151 const_iv (FIEMAP_FLAG_XATTR)
702#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)
703 1164
704#if !HAVE_FDATASYNC 1165 const_iv (SPLICE_F_MOVE)
705# define fdatasync fsync 1166 const_iv (SPLICE_F_NONBLOCK)
706#endif 1167 const_iv (SPLICE_F_MORE)
1168 const_iv (SPLICE_F_GIFT)
707 1169
708#if !HAVE_READAHEAD 1170 const_iv (EFD_CLOEXEC)
709# define readahead aio_readahead 1171 const_iv (EFD_NONBLOCK)
1172 const_iv (EFD_SEMAPHORE)
710 1173
711static ssize_t readahead (int fd, off_t offset, size_t count) 1174 /* these are libeio constants, and are independent of gendef0 */
712{ 1175 const_eio (SEEK_SET)
713 dBUF; 1176 const_eio (SEEK_CUR)
1177 const_eio (SEEK_END)
714 1178
715 while (count > 0) 1179 const_eio (MCL_FUTURE)
716 { 1180 const_eio (MCL_CURRENT)
717 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
718 1181
719 pread (fd, aio_buf, len, offset); 1182 const_eio (MS_ASYNC)
720 offset += len; 1183 const_eio (MS_INVALIDATE)
721 count -= len; 1184 const_eio (MS_SYNC)
722 }
723 1185
724 errno = 0; 1186 const_eio (MT_MODIFY)
725}
726#endif
727 1187
728#if !HAVE_READDIR_R 1188 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
729# define readdir_r aio_readdir_r 1189 const_eio (SYNC_FILE_RANGE_WRITE)
1190 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
730 1191
731static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 1192 const_eio (FALLOC_FL_KEEP_SIZE)
732 1193 const_eio (FALLOC_FL_PUNCH_HOLE)
733static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 1194 const_eio (FALLOC_FL_COLLAPSE_RANGE)
734{ 1195 const_eio (FALLOC_FL_ZERO_RANGE)
735 struct dirent *e; 1196 const_eio (FALLOC_FL_INSERT_RANGE)
736 int errorno; 1197 const_eio (FALLOC_FL_UNSHARE_RANGE)
737 1198
738 LOCK (readdirlock); 1199 const_eio (RENAME_NOREPLACE)
1200 const_eio (RENAME_EXCHANGE)
1201 const_eio (RENAME_WHITEOUT)
739 1202
740 e = readdir (dirp); 1203 const_eio (READDIR_DENTS)
741 errorno = errno; 1204 const_eio (READDIR_DIRS_FIRST)
1205 const_eio (READDIR_STAT_ORDER)
1206 const_eio (READDIR_FOUND_UNKNOWN)
742 1207
743 if (e) 1208 const_eio (DT_UNKNOWN)
744 { 1209 const_eio (DT_FIFO)
745 *res = ent; 1210 const_eio (DT_CHR)
746 strcpy (ent->d_name, e->d_name); 1211 const_eio (DT_DIR)
747 } 1212 const_eio (DT_BLK)
748 else 1213 const_eio (DT_REG)
749 *res = 0; 1214 const_eio (DT_LNK)
750 1215 const_eio (DT_SOCK)
751 UNLOCK (readdirlock); 1216 const_eio (DT_WHT)
752
753 errno = errorno;
754 return e ? 0 : -1;
755}
756#endif
757
758/* sendfile always needs emulation */
759static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
760{
761 ssize_t res;
762
763 if (!count)
764 return 0;
765
766#if HAVE_SENDFILE
767# if __linux
768 res = sendfile (ofd, ifd, &offset, count);
769
770# elif __freebsd
771 /*
772 * Of course, the freebsd sendfile is a dire hack with no thoughts
773 * wasted on making it similar to other I/O functions.
774 */
775 {
776 off_t sbytes;
777 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778
779 if (res < 0 && sbytes)
780 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
781 res = sbytes;
782 } 1217 };
783 1218
784# elif __hpux 1219 aio_stash = gv_stashpv ("IO::AIO" , 1);
785 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);
786 1223
787# elif __solaris 1224 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
788 { 1225 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
789 struct sendfilevec vec;
790 size_t sbytes;
791 1226
792 vec.sfv_fd = ifd; 1227 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
793 vec.sfv_flag = 0;
794 vec.sfv_off = offset;
795 vec.sfv_len = count;
796 1228
797 res = sendfilev (ofd, &vec, 1, &sbytes); 1229 reinit ();
1230}
798 1231
799 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;
800 res = sbytes; 1333 req->size = nbytes;
801 } 1334 req->int2 = flags;
802 1335
803# 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
804#else 1371#else
805 res = -1; 1372 pipe (pipefd) < 0
806 errno = ENOSYS; 1373 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
807#endif 1374#endif
808 1375 || close (pipefd [1]) < 0
809 if (res < 0
810 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
811#if __solaris
812 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
813#endif
814 )
815 )
816 {
817 /* emulate sendfile. this is a major pain in the ass */
818 dBUF;
819
820 res = 0;
821
822 while (count)
823 {
824 ssize_t cnt;
825
826 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
827
828 if (cnt <= 0)
829 { 1376 )
830 if (cnt && !res) res = -1; 1377 abort (); /*D*/
831 break;
832 }
833 1378
834 cnt = write (ofd, aio_buf, cnt); 1379 close_fd = pipefd [0];
835
836 if (cnt <= 0)
837 {
838 if (cnt && !res) res = -1;
839 break;
840 }
841
842 offset += cnt;
843 res += cnt;
844 count -= cnt;
845 }
846 }
847
848 return res;
849}
850
851/* read a full directory */
852static void scandir_ (aio_req req, worker *self)
853{
854 DIR *dirp;
855 union
856 {
857 struct dirent d;
858 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
859 } *u;
860 struct dirent *entp;
861 char *name, *names;
862 int memlen = 4096;
863 int memofs = 0;
864 int res = 0;
865 int errorno;
866
867 LOCK (wrklock);
868 self->dirp = dirp = opendir (req->dataptr);
869 self->dbuf = u = malloc (sizeof (*u));
870 UNLOCK (wrklock);
871
872 req->data2ptr = names = malloc (memlen);
873
874 if (dirp && u && names)
875 for (;;)
876 {
877 errno = 0;
878 readdir_r (dirp, &u->d, &entp);
879
880 if (!entp)
881 break;
882
883 name = entp->d_name;
884
885 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
886 {
887 int len = strlen (name) + 1;
888
889 res++;
890
891 while (memofs + len > memlen)
892 {
893 memlen *= 2;
894 LOCK (wrklock);
895 req->data2ptr = names = realloc (names, memlen);
896 UNLOCK (wrklock);
897
898 if (!names)
899 break;
900 }
901
902 memcpy (names + memofs, name, len);
903 memofs += len;
904 } 1380 }
905 }
906 1381
907 if (errno) 1382 req->type = EIO_DUP2;
908 res = -1; 1383 req->int1 = close_fd;
909 1384 req->sv2 = newSVsv (fh);
910 req->result = res; 1385 req->int2 = fd;
911}
912 1386
913/*****************************************************************************/ 1387 REQ_SEND;
914
915static void *aio_proc (void *thr_arg)
916{
917 aio_req req;
918 int type;
919 worker *self = (worker *)thr_arg;
920
921 do
922 {
923 LOCK (reqlock);
924
925 for (;;)
926 {
927 self->req = req = reqq_shift (&req_queue);
928
929 if (req)
930 break;
931
932 pthread_cond_wait (&reqwait, &reqlock);
933 }
934
935 UNLOCK (reqlock);
936
937 errno = 0; /* strictly unnecessary */
938 type = req->type; /* remember type for QUIT check */
939
940 if (!(req->flags & FLAG_CANCELLED))
941 switch (type)
942 {
943 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
944 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
945
946 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
947 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
948
949 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
950 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
951 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
952
953 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
954 case REQ_CLOSE: req->result = close (req->fd); break;
955 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
956 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
957 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
958 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
959 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
960
961 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
962 case REQ_FSYNC: req->result = fsync (req->fd); break;
963 case REQ_READDIR: scandir_ (req, self); break;
964
965 case REQ_BUSY:
966 {
967 struct timeval tv;
968
969 tv.tv_sec = req->fd;
970 tv.tv_usec = req->fd2;
971
972 req->result = select (0, 0, 0, 0, &tv);
973 }
974
975 case REQ_GROUP:
976 case REQ_NOP:
977 case REQ_QUIT:
978 break;
979
980 default:
981 req->result = ENOSYS;
982 break;
983 }
984
985 req->errorno = errno;
986
987 LOCK (reslock);
988
989 if (!reqq_push (&res_queue, req))
990 /* write a dummy byte to the pipe so fh becomes ready */
991 write (respipe [1], &respipe, 1);
992
993 self->req = 0;
994 worker_clear (self);
995
996 UNLOCK (reslock);
997 }
998 while (type != REQ_QUIT);
999
1000 LOCK (wrklock);
1001 worker_free (self);
1002 UNLOCK (wrklock);
1003
1004 return 0;
1005} 1388}
1006 1389
1007/*****************************************************************************/
1008
1009static void atfork_prepare (void)
1010{
1011 LOCK (wrklock);
1012 LOCK (reqlock);
1013 LOCK (reslock);
1014#if !HAVE_PREADWRITE
1015 LOCK (preadwritelock);
1016#endif
1017#if !HAVE_READDIR_R
1018 LOCK (readdirlock);
1019#endif
1020}
1021
1022static void atfork_parent (void)
1023{
1024#if !HAVE_READDIR_R
1025 UNLOCK (readdirlock);
1026#endif
1027#if !HAVE_PREADWRITE
1028 UNLOCK (preadwritelock);
1029#endif
1030 UNLOCK (reslock);
1031 UNLOCK (reqlock);
1032 UNLOCK (wrklock);
1033}
1034
1035static void atfork_child (void)
1036{
1037 aio_req prv;
1038
1039 while (prv = reqq_shift (&req_queue))
1040 req_free (prv);
1041
1042 while (prv = reqq_shift (&res_queue))
1043 req_free (prv);
1044
1045 while (wrk_first.next != &wrk_first)
1046 {
1047 worker *wrk = wrk_first.next;
1048
1049 if (wrk->req)
1050 req_free (wrk->req);
1051
1052 worker_clear (wrk);
1053 worker_free (wrk);
1054 }
1055
1056 started = 0;
1057 nreqs = 0;
1058
1059 close (respipe [0]);
1060 close (respipe [1]);
1061 create_pipe ();
1062
1063 atfork_parent ();
1064}
1065
1066#define dREQ \
1067 aio_req req; \
1068 int req_pri = next_pri; \
1069 next_pri = DEFAULT_PRI + PRI_BIAS; \
1070 \
1071 if (SvOK (callback) && !SvROK (callback)) \
1072 croak ("callback must be undef or of reference type"); \
1073 \
1074 Newz (0, req, 1, aio_cb); \
1075 if (!req) \
1076 croak ("out of memory during aio_req allocation"); \
1077 \
1078 req->callback = newSVsv (callback); \
1079 req->pri = req_pri
1080
1081#define REQ_SEND \
1082 req_send (req); \
1083 \
1084 if (GIMME_V != G_VOID) \
1085 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1086
1087MODULE = IO::AIO PACKAGE = IO::AIO
1088
1089PROTOTYPES: ENABLE
1090
1091BOOT:
1092{
1093 HV *stash = gv_stashpv ("IO::AIO", 1);
1094 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097
1098 create_pipe ();
1099 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100}
1101
1102void 1390void
1103min_parallel (nthreads) 1391aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1104 int nthreads
1105 PROTOTYPE: $
1106
1107void
1108max_parallel (nthreads)
1109 int nthreads
1110 PROTOTYPE: $
1111
1112int
1113max_outstanding (nreqs)
1114 int nreqs
1115 PROTOTYPE: $
1116 CODE: 1392 PPCODE:
1117 RETVAL = max_outstanding;
1118 max_outstanding = nreqs;
1119
1120void
1121aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1122 SV * pathname
1123 int flags
1124 int mode
1125 SV * callback
1126 PROTOTYPE: $$$;$
1127 PPCODE:
1128{ 1393{
1394 int fd = s_fileno_croak (fh, 0);
1129 dREQ; 1395 dREQ;
1130 1396
1131 req->type = REQ_OPEN; 1397 req->type = EIO_SEEK;
1132 req->data = newSVsv (pathname); 1398 req->sv1 = newSVsv (fh);
1133 req->dataptr = SvPVbyte_nolen (req->data); 1399 req->int1 = fd;
1134 req->fd = flags; 1400 req->offs = SvVAL64 (offset);
1135 req->mode = mode; 1401 req->int2 = whence;
1136 1402
1137 REQ_SEND; 1403 REQ_SEND;
1138} 1404}
1139 1405
1140void 1406void
1141aio_close (fh,callback=&PL_sv_undef) 1407aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1142 SV * fh
1143 SV * callback
1144 PROTOTYPE: $;$
1145 ALIAS: 1408 ALIAS:
1146 aio_close = REQ_CLOSE
1147 aio_fsync = REQ_FSYNC
1148 aio_fdatasync = REQ_FDATASYNC
1149 PPCODE:
1150{
1151 dREQ;
1152
1153 req->type = ix;
1154 req->fh = newSVsv (fh);
1155 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1156
1157 REQ_SEND (req);
1158}
1159
1160void
1161aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1162 SV * fh
1163 UV offset
1164 UV length
1165 SV * data
1166 UV dataoffset
1167 SV * callback
1168 ALIAS:
1169 aio_read = REQ_READ 1409 aio_read = EIO_READ
1170 aio_write = REQ_WRITE 1410 aio_write = EIO_WRITE
1171 PROTOTYPE: $$$$$;$
1172 PPCODE: 1411 PPCODE:
1173{ 1412{
1174 aio_req req;
1175 STRLEN svlen; 1413 STRLEN svlen;
1414 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176 char *svptr = SvPVbyte (data, svlen); 1415 char *svptr = SvPVbyte (data, svlen);
1177 1416 UV len = SvUV (length);
1178 SvUPGRADE (data, SVt_PV);
1179 SvPOK_on (data);
1180 1417
1181 if (dataoffset < 0) 1418 if (dataoffset < 0)
1182 dataoffset += svlen; 1419 dataoffset += svlen;
1183 1420
1184 if (dataoffset < 0 || dataoffset > svlen) 1421 if (dataoffset < 0 || dataoffset > svlen)
1185 croak ("data offset outside of string"); 1422 croak ("dataoffset outside of data scalar");
1186 1423
1187 if (ix == REQ_WRITE) 1424 if (ix == EIO_WRITE)
1188 { 1425 {
1189 /* write: check length and adjust. */ 1426 /* write: check length and adjust. */
1190 if (length < 0 || length + dataoffset > svlen) 1427 if (!SvOK (length) || len + dataoffset > svlen)
1191 length = svlen - dataoffset; 1428 len = svlen - dataoffset;
1192 } 1429 }
1193 else 1430 else
1194 { 1431 {
1195 /* read: grow scalar as necessary */ 1432 /* read: check type and grow scalar as necessary */
1433 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1196 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");
1197 } 1437 }
1198
1199 if (length < 0)
1200 croak ("length must not be negative");
1201 1438
1202 { 1439 {
1203 dREQ; 1440 dREQ;
1204 1441
1205 req->type = ix; 1442 req->type = ix;
1206 req->fh = newSVsv (fh); 1443 req->sv1 = newSVsv (fh);
1207 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1444 req->int1 = fd;
1208 : IoOFP (sv_2io (fh))); 1445 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209 req->offset = offset; 1446 req->size = len;
1210 req->length = length;
1211 req->data = SvREFCNT_inc (data); 1447 req->sv2 = SvREFCNT_inc (data);
1212 req->dataptr = (char *)svptr + dataoffset; 1448 req->ptr2 = (char *)svptr + dataoffset;
1449 req->stroffset = dataoffset;
1213 1450
1214 if (!SvREADONLY (data)) 1451 if (!SvREADONLY (data))
1215 { 1452 {
1216 SvREADONLY_on (data); 1453 SvREADONLY_on (data);
1217 req->data2ptr = (void *)data; 1454 req->flags |= FLAG_SV2_RO_OFF;
1218 } 1455 }
1219 1456
1220 REQ_SEND; 1457 REQ_SEND;
1221 } 1458 }
1222} 1459}
1223 1460
1224void 1461void
1225aio_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)
1226 SV * out_fh 1463 ALIAS:
1227 SV * in_fh 1464 aio_ioctl = EIO_IOCTL
1228 UV in_offset 1465 aio_fcntl = EIO_FCNTL
1229 UV length
1230 SV * callback
1231 PROTOTYPE: $$$$;$
1232 PPCODE: 1466 PPCODE:
1233{ 1467{
1234 dREQ; 1468 int fd = s_fileno_croak (fh, 0);
1469 char *svptr;
1235 1470
1236 req->type = REQ_SENDFILE; 1471 if (SvPOK (arg) || !SvNIOK (arg))
1237 req->fh = newSVsv (out_fh);
1238 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1239 req->fh2 = newSVsv (in_fh);
1240 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1241 req->offset = in_offset;
1242 req->length = length;
1243
1244 REQ_SEND;
1245}
1246
1247void
1248aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1249 SV * fh
1250 UV offset
1251 IV length
1252 SV * callback
1253 PROTOTYPE: $$$;$
1254 PPCODE:
1255{
1256 dREQ;
1257
1258 req->type = REQ_READAHEAD;
1259 req->fh = newSVsv (fh);
1260 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1261 req->offset = offset;
1262 req->length = length;
1263
1264 REQ_SEND;
1265}
1266
1267void
1268aio_stat (fh_or_path,callback=&PL_sv_undef)
1269 SV * fh_or_path
1270 SV * callback
1271 ALIAS:
1272 aio_stat = REQ_STAT
1273 aio_lstat = REQ_LSTAT
1274 PPCODE:
1275{
1276 dREQ;
1277
1278 New (0, req->statdata, 1, Stat_t);
1279 if (!req->statdata)
1280 { 1472 {
1281 req_free (req); 1473 STRLEN svlen;
1282 croak ("out of memory during aio_req->statdata allocation"); 1474 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1283 } 1475#ifdef IOCPARM_LEN
1476 STRLEN need = IOCPARM_LEN (request);
1477#else
1478 STRLEN need = 256;
1479#endif
1284 1480
1285 if (SvPOK (fh_or_path)) 1481 if (svlen < need)
1286 { 1482 svptr = SvGROW (arg, need);
1287 req->type = ix;
1288 req->data = newSVsv (fh_or_path);
1289 req->dataptr = SvPVbyte_nolen (req->data);
1290 } 1483 }
1291 else 1484 else
1485 svptr = (char *)SvIV (arg);
1486
1292 { 1487 {
1488 dREQ;
1489
1293 req->type = REQ_FSTAT; 1490 req->type = ix;
1294 req->fh = newSVsv (fh_or_path); 1491 req->sv1 = newSVsv (fh);
1295 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;
1296 } 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);
1297 1512
1298 REQ_SEND; 1513 REQ_SEND;
1299} 1514}
1300 1515
1301void 1516void
1302aio_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)
1303 SV * pathname 1518 PPCODE:
1304 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)
1305 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:
1306 aio_unlink = REQ_UNLINK 1665 aio_unlink = EIO_UNLINK
1307 aio_rmdir = REQ_RMDIR 1666 aio_rmdir = EIO_RMDIR
1308 aio_readdir = REQ_READDIR 1667 aio_readdir = EIO_READDIR
1309 PPCODE: 1668 PPCODE:
1310{ 1669{
1311 dREQ; 1670 dREQ;
1312 1671
1313 req->type = ix; 1672 req->type = ix;
1314 req->data = newSVsv (pathname); 1673 req_set_path1 (req, pathname);
1315 req->dataptr = SvPVbyte_nolen (req->data); 1674
1316
1317 REQ_SEND; 1675 REQ_SEND;
1318} 1676}
1319 1677
1320void 1678void
1321aio_link (oldpath,newpath,callback=&PL_sv_undef) 1679aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1322 SV * oldpath
1323 SV * newpath
1324 SV * callback
1325 ALIAS: 1680 ALIAS:
1326 aio_link = REQ_LINK 1681 aio_link = EIO_LINK
1327 aio_symlink = REQ_SYMLINK 1682 aio_symlink = EIO_SYMLINK
1328 aio_rename = REQ_RENAME 1683 aio_rename = EIO_RENAME
1329 PPCODE: 1684 PPCODE:
1330{ 1685{
1686 eio_wd wd2 = 0;
1331 dREQ; 1687 dREQ;
1332 1688
1333 req->type = ix; 1689 req->type = ix;
1334 req->fh = newSVsv (oldpath); 1690 req_set_path1 (req, oldpath);
1335 req->data2ptr = SvPVbyte_nolen (req->fh); 1691 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1336 req->data = newSVsv (newpath); 1692 req->int3 = (long)wd2;
1337 req->dataptr = SvPVbyte_nolen (req->data);
1338 1693
1339 REQ_SEND; 1694 REQ_SEND;
1340} 1695}
1341 1696
1342void 1697void
1343aio_busy (delay,callback=&PL_sv_undef) 1698aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1344 double delay
1345 SV * callback
1346 PPCODE: 1699 PPCODE:
1347{ 1700{
1701 eio_wd wd2 = 0;
1348 dREQ; 1702 dREQ;
1349 1703
1350 req->type = REQ_BUSY; 1704 req->type = EIO_RENAME;
1351 req->fd = delay < 0. ? 0 : delay; 1705 req_set_path1 (req, oldpath);
1352 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1706 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1353 1707 req->int2 = flags;
1708 req->int3 = (long)wd2;
1709
1354 REQ_SEND; 1710 REQ_SEND;
1355} 1711}
1356 1712
1357void 1713void
1358aio_group (callback=&PL_sv_undef) 1714aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1359 SV * callback 1715 PPCODE:
1360 PROTOTYPE: ;$ 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
1361 PPCODE: 1732 PPCODE:
1362{ 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);
1363 dREQ; 1809 dREQ;
1364 1810
1365 req->type = REQ_GROUP; 1811 req->type = EIO_CUSTOM;
1366 req_send (req); 1812 req->sv1 = newSVsv (fh);
1813 req->int1 = fd;
1367 1814
1368 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1815 req->feed = fiemap;
1369} 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
1370 1823
1824 REQ_SEND;
1825}
1826
1371void 1827void
1372aio_nop (callback=&PL_sv_undef) 1828aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1373 SV * callback 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)
1374 PPCODE: 1867 PPCODE:
1375{ 1868{
1376 dREQ; 1869 dREQ;
1377 1870
1378 req->type = REQ_NOP; 1871 req->type = EIO_BUSY;
1872 req->nv1 = delay < 0. ? 0. : delay;
1379 1873
1380 REQ_SEND; 1874 REQ_SEND;
1381} 1875}
1382 1876
1383void 1877void
1384aioreq_pri (int pri = DEFAULT_PRI) 1878aio_group (SV *callback = &PL_sv_undef)
1385 CODE: 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 {
1386 if (pri < PRI_MIN) pri = PRI_MIN; 1912 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387 if (pri > PRI_MAX) pri = PRI_MAX; 1913 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388 next_pri = pri + PRI_BIAS; 1914 next_pri = pri;
1915 }
1916 OUTPUT:
1917 RETVAL
1389 1918
1390void 1919void
1391aioreq_nice (int nice = 0) 1920aioreq_nice (int nice = 0)
1392 CODE: 1921 CODE:
1393 nice = next_pri - nice; 1922 nice = next_pri - nice;
1394 if (nice < PRI_MIN) nice = PRI_MIN; 1923 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395 if (nice > PRI_MAX) nice = PRI_MAX; 1924 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396 next_pri = nice + PRI_BIAS; 1925 next_pri = nice;
1397 1926
1398void 1927void
1399flush () 1928flush ()
1400 PROTOTYPE:
1401 CODE: 1929 CODE:
1402 while (nreqs) 1930 while (eio_nreqs ())
1403 { 1931 {
1404 poll_wait (); 1932 poll_wait ();
1405 poll_cb (); 1933 poll_cb ();
1406 } 1934 }
1407 1935
1408void 1936int
1409poll() 1937poll ()
1410 PROTOTYPE:
1411 CODE: 1938 CODE:
1412 if (nreqs)
1413 {
1414 poll_wait (); 1939 poll_wait ();
1415 poll_cb (); 1940 RETVAL = poll_cb ();
1416 }
1417
1418int
1419poll_fileno()
1420 PROTOTYPE:
1421 CODE:
1422 RETVAL = respipe [0];
1423 OUTPUT: 1941 OUTPUT:
1424 RETVAL 1942 RETVAL
1425 1943
1426int 1944int
1945poll_fileno ()
1946 CODE:
1947 RETVAL = s_epipe_fd (&respipe);
1948 OUTPUT:
1949 RETVAL
1950
1951int
1427poll_cb(...) 1952poll_cb (...)
1428 PROTOTYPE: 1953 PROTOTYPE:
1429 CODE: 1954 CODE:
1430 RETVAL = poll_cb (); 1955 RETVAL = poll_cb ();
1431 OUTPUT: 1956 OUTPUT:
1432 RETVAL 1957 RETVAL
1433 1958
1434void 1959void
1435poll_wait() 1960poll_wait ()
1436 PROTOTYPE:
1437 CODE: 1961 CODE:
1438 if (nreqs)
1439 poll_wait (); 1962 poll_wait ();
1440 1963
1441int 1964int
1442nreqs() 1965nreqs ()
1443 PROTOTYPE:
1444 CODE: 1966 CODE:
1445 RETVAL = nreqs; 1967 RETVAL = eio_nreqs ();
1446 OUTPUT: 1968 OUTPUT:
1447 RETVAL 1969 RETVAL
1448 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)
2146 PROTOTYPE: ;$
2147 PPCODE:
2148{
2149 int fd[2];
2150 int res;
2151
2152 if (flags)
2153#if HAVE_PIPE2
2154 res = pipe2 (fd, flags);
2155#else
2156 res = (errno = ENOSYS, -1);
2157#endif
2158 else
2159 res = pipe (fd);
2160
2161 if (!res)
2162 {
2163 EXTEND (SP, 2);
2164 PUSHs (newmortalFH (fd[0], O_RDONLY));
2165 PUSHs (newmortalFH (fd[1], O_WRONLY));
2166 }
2167}
2168
2169void
2170eventfd (unsigned int initval = 0, int flags = 0)
2171 PPCODE:
2172{
2173 int fd;
2174#if HAVE_EVENTFD
2175 fd = eventfd (initval, flags);
2176#else
2177 fd = (errno = ENOSYS, -1);
2178#endif
2179
2180 XPUSHs (newmortalFH (fd, O_RDWR));
2181}
2182
2183UV
2184get_fdlimit ()
2185 CODE:
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)
2213 {
2214 rl.rlim_cur = limit;
2215
2216 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2217 rl.rlim_max = rl.rlim_cur;
2218 }
2219
2220 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2221 XSRETURN_YES;
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)
2256 CODE:
2257 SvREFCNT_dec (on_next_submit);
2258 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2259
1449PROTOTYPES: DISABLE 2260PROTOTYPES: DISABLE
2261
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)
2272 CODE:
2273{
2274 aio_wd wd = SvAIO_WD (self);
2275#if HAVE_AT
2276 {
2277 SV *callback = &PL_sv_undef;
2278 dREQ; /* clobbers next_pri :/ */
2279 next_pri = req->pri; /* restore next_pri */
2280 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2281 req->type = EIO_WD_CLOSE;
2282 req->wd = wd;
2283 REQ_SEND;
2284 }
2285#else
2286 eio_wd_close_sync (wd);
2287#endif
2288}
1450 2289
1451MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2290MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452 2291
1453void 2292void
1454cancel (aio_req_ornot req) 2293cancel (aio_req_ornot req)
1455 CODE: 2294 CODE:
1456 req_cancel (req); 2295 eio_cancel (req);
1457 2296
1458void 2297void
1459cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2298cb (aio_req_ornot req, SV *callback = NO_INIT)
1460 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
1461 SvREFCNT_dec (req->callback); 2308 SvREFCNT_dec (req->callback);
1462 req->callback = newSVsv (callback); 2309 req->callback = SvREFCNT_inc (cb_cv);
2310 }
2311}
1463 2312
1464MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2313MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465 2314
1466void 2315void
1467add (aio_req grp, ...) 2316add (aio_req grp, ...)
1468 PPCODE: 2317 PPCODE:
1469{ 2318{
1470 int i; 2319 int i;
1471 aio_req req;
1472 2320
1473 if (grp->fd == 2) 2321 if (grp->int1 == 2)
1474 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");
1475 2323
1476 for (i = 1; i < items; ++i ) 2324 for (i = 1; i < items; ++i )
1477 { 2325 {
2326 aio_req req;
2327
1478 if (GIMME_V != G_VOID) 2328 if (GIMME_V != G_VOID)
1479 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2329 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480 2330
1481 req = SvAIO_REQ (ST (i)); 2331 req = SvAIO_REQ (ST (i));
1482 2332
1483 if (req) 2333 if (req)
1484 { 2334 eio_grp_add (grp, req);
1485 ++grp->length;
1486 req->grp = grp;
1487
1488 req->grp_prev = 0;
1489 req->grp_next = grp->grp_first;
1490
1491 if (grp->grp_first)
1492 grp->grp_first->grp_prev = req;
1493
1494 grp->grp_first = req;
1495 }
1496 } 2335 }
1497} 2336}
2337
2338void
2339cancel_subs (aio_req_ornot req)
2340 CODE:
2341 req_cancel_subs (req);
1498 2342
1499void 2343void
1500result (aio_req grp, ...) 2344result (aio_req grp, ...)
1501 CODE: 2345 CODE:
1502{ 2346{
1503 int i; 2347 int i;
2348 AV *av;
2349
2350 grp->errorno = errno;
2351
1504 AV *av = newAV (); 2352 av = newAV ();
2353 av_extend (av, items - 1);
1505 2354
1506 for (i = 1; i < items; ++i ) 2355 for (i = 1; i < items; ++i )
1507 av_push (av, newSVsv (ST (i))); 2356 av_push (av, newSVsv (ST (i)));
1508 2357
1509 SvREFCNT_dec (grp->data); 2358 SvREFCNT_dec (grp->sv1);
1510 grp->data = (SV *)av; 2359 grp->sv1 = (SV *)av;
1511} 2360}
2361
2362void
2363errno (aio_req grp, int errorno = errno)
2364 CODE:
2365 grp->errorno = errorno;
1512 2366
1513void 2367void
1514limit (aio_req grp, int limit) 2368limit (aio_req grp, int limit)
1515 CODE: 2369 CODE:
1516 grp->fd2 = limit; 2370 eio_grp_limit (grp, limit);
1517 aio_grp_feed (grp);
1518 2371
1519void 2372void
1520feed (aio_req grp, SV *callback=&PL_sv_undef) 2373feed (aio_req grp, SV *callback = &PL_sv_undef)
1521 CODE: 2374 CODE:
1522{ 2375{
1523 SvREFCNT_dec (grp->fh2); 2376 SvREFCNT_dec (grp->sv2);
1524 grp->fh2 = newSVsv (callback); 2377 grp->sv2 = newSVsv (callback);
2378 grp->feed = aio_grp_feed;
1525 2379
1526 if (grp->fd2 <= 0) 2380 if (grp->int2 <= 0)
1527 grp->fd2 = 2; 2381 grp->int2 = 2;
1528 2382
1529 aio_grp_feed (grp); 2383 eio_grp_limit (grp, grp->int2);
1530} 2384}
1531 2385

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