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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.72 by root, Tue Oct 24 17:22:17 2006 UTC vs.
Revision 1.251 by root, Sat Jan 6 01:04:42 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_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
42# else 151# else
43# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44# endif 153# endif
45#endif 154#endif
46 155
47/* used for struct dirent, AIX doesn't provide it */ 156/* defines all sorts of constants to 0 unless they are already defined */
48#ifndef NAME_MAX 157/* also provides const_iv_ and const_niv_ macros for them */
49# define NAME_MAX 4096 158#include "def0.h"
50#endif
51 159
52#if __ia64 160#ifndef makedev
53# define STACKSIZE 65536 161# 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 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
59 169
60/* buffer size for various temporary buffers */ 170#if PAGESIZE <= 0
61#define AIO_BUFSIZE 65536 171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
62 173
63#define dBUF \ 174/*****************************************************************************/
64 char *aio_buf; \ 175
65 LOCK (wrklock); \ 176#if !_POSIX_MAPPED_FILES
66 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 177# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
67 UNLOCK (wrklock); \ 178# define munmap(addr,length) EIO_ENOSYS ()
68 if (!aio_buf) \ 179#endif
180
181#if !_POSIX_MEMORY_PROTECTION
182# define mprotect(addr,len,prot) EIO_ENOSYS ()
183#endif
184
185#define FOREIGN_MAGIC PERL_MAGIC_ext
186
187static int ecb_cold
188mmap_free (pTHX_ SV *sv, MAGIC *mg)
189{
190 int old_errno = errno;
191 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
192 errno = old_errno;
193
194 mg->mg_obj = 0; /* just in case */
195
196 SvREADONLY_off (sv);
197
198 if (SvPVX (sv) != mg->mg_ptr)
199 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
200
201 SvCUR_set (sv, 0);
202 SvPVX (sv) = 0;
203 SvOK_off (sv);
204
69 return -1; 205 return 0;
206}
70 207
71enum { 208static MGVTBL mmap_vtbl = {
72 REQ_QUIT, 209 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}; 210};
84 211
85#define AIO_REQ_KLASS "IO::AIO::REQ" 212static int ecb_cold
86#define AIO_GRP_KLASS "IO::AIO::GRP" 213sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88typedef struct aio_cb
89{ 214{
90 struct aio_cb *volatile next; 215 free (mg->mg_ptr);
216 mg->mg_obj = 0; /* just in case */
91 217
92 SV *data, *callback; 218 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;
99 219
100 STRLEN dataoffset; 220 if (SvPVX (sv) != mg->mg_ptr)
101 int type; 221 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102 int fd, fd2;
103 int errorno;
104 mode_t mode; /* open */
105 222
106 unsigned char flags; 223 SvCUR_set (sv, 0);
107 unsigned char pri; 224 SvPVX (sv) = 0;
225 SvOK_off (sv);
108 226
109 SV *self; /* the perl counterpart of this request, if any */ 227 return 0;
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 228}
111} aio_cb;
112 229
113enum { 230static MGVTBL sysfree_vtbl = {
114 FLAG_CANCELLED = 0x01, 231 0, 0, 0, 0, sysfree_free
115}; 232};
116 233
117typedef aio_cb *aio_req; 234/*****************************************************************************/
118typedef aio_cb *aio_req_ornot;
119 235
120enum { 236/* helper: set scalar to foreign ptr with custom free */
121 PRI_MIN = -4, 237static void
122 PRI_MAX = 4, 238sv_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{ 239{
164 if (wrk->dirp) 240 sv_force_normal (sv);
241
242 /* we store the length in mg_obj, as namlen is I32 :/ */
243 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
244 ->mg_obj = (SV *)length;
245
246 SvUPGRADE (sv, SVt_PV); /* nop... */
247
248 if (SvLEN (sv))
249 Safefree (SvPVX (sv));
250
251 SvPVX (sv) = (char *)addr;
252 SvCUR_set (sv, length);
253 SvLEN_set (sv, 0);
254 SvPOK_only (sv);
255}
256
257static void
258sv_clear_foreign (SV *sv)
259{
260 /* todo: iterate over magic and only free ours, but of course */
261 /* the perl5porters will call that (correct) behaviour buggy */
262 sv_unmagic (sv, FOREIGN_MAGIC);
263}
264
265/*****************************************************************************/
266
267static void
268fiemap (eio_req *req)
269{
270 req->result = -1;
271
272#if HAVE_FIEMAP
273 /* assume some c99 */
274 struct fiemap *fiemap = 0;
275 size_t end_offset;
276 int count = req->int3;
277
278 req->flags |= EIO_FLAG_PTR1_FREE;
279
280 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
281 /* increase in 3.5kb steps */
282 if (count < 0)
283 count = 8;
284
285 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
286 errno = ENOMEM;
287 if (!fiemap)
288 return;
289
290 req->ptr1 = fiemap;
291
292 fiemap->fm_start = req->offs;
293 fiemap->fm_length = req->size;
294 fiemap->fm_flags = req->int2;
295 fiemap->fm_extent_count = count;
296
297 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
298 return;
299
300 if (req->int3 >= 0 /* not autosizing */
301 || !fiemap->fm_mapped_extents /* no more extents */
302 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
303 goto done;
304
305 /* else we have to loop -
306 * it would be tempting (actually I tried that first) to just query the
307 * number of extents needed, but linux often feels like not returning all
308 * extents, without telling us it left any out. this complicates
309 * this quite a bit.
310 */
311
312 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
313
314 for (;;)
165 { 315 {
166 closedir (wrk->dirp); 316 /* 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; 317 char scratch[3072];
168 } 318 struct fiemap *incmap = (struct fiemap *)scratch;
169 319
170 if (wrk->dbuf) 320 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
171 { 321 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
172 free (wrk->dbuf); 322 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
173 wrk->dbuf = 0; 323 incmap->fm_flags = fiemap->fm_flags;
174 } 324 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
175}
176 325
177static void worker_free (worker *wrk) 326 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; 327 return;
224 328
225 --q->size; 329 if (!incmap->fm_mapped_extents)
330 goto done;
226 331
227 for (pri = NUM_PRI; pri--; ) 332 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
228 { 333 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
229 aio_req req = q->qs[pri]; 334 errno = ENOMEM;
230
231 if (req) 335 if (!fiemap)
336 return;
337
338 req->ptr1 = fiemap;
339
340 for (count = 0; count < incmap->fm_mapped_extents; ++count)
232 { 341 {
233 if (!(q->qs[pri] = req->next)) 342 struct fiemap_extent *e = incmap->fm_extents + count;
234 q->qe[pri] = 0;
235 343
236 return req; 344 if (e->fe_logical + e->fe_length >= end_offset)
345 goto done;
346
347 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
348
349 if (e->fe_flags & FIEMAP_EXTENT_LAST)
350 goto done;
351
237 } 352 }
238 } 353 }
239 354
240 abort (); 355done:
241} 356 req->result = 0;
242 357
243static void req_invoke (aio_req req); 358#else
359 errno = ENOSYS;
360#endif
361}
362
363/*****************************************************************************/
364
365enum {
366 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
367};
368
369typedef eio_req *aio_req;
370typedef eio_req *aio_req_ornot;
371typedef eio_wd aio_wd;
372
373static SV *on_next_submit;
374static int next_pri = EIO_PRI_DEFAULT;
375static int max_outstanding;
376
377static s_epipe respipe;
378
244static void req_free (aio_req req); 379static void req_destroy (aio_req req);
245static void req_cancel (aio_req req); 380static void req_cancel (aio_req req);
246 381
382static void
383want_poll (void)
384{
385 /* write a dummy byte to the pipe so fh becomes ready */
386 s_epipe_signal (&respipe);
387}
388
389static void
390done_poll (void)
391{
392 /* read any signals sent by the worker threads */
393 s_epipe_drain (&respipe);
394}
395
247/* must be called at most once */ 396/* must be called at most once */
248static SV *req_sv (aio_req req, const char *klass) 397static SV *
398req_sv (aio_req req, HV *stash)
249{ 399{
250 if (!req->self) 400 if (!req->self)
251 { 401 {
252 req->self = (SV *)newHV (); 402 req->self = (SV *)newHV ();
253 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 403 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254 } 404 }
255 405
256 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 406 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257} 407}
258 408
259static aio_req SvAIO_REQ (SV *sv) 409static SV *
410newSVaio_wd (aio_wd wd)
411{
412 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
413}
414
415static aio_req
416SvAIO_REQ (SV *sv)
260{ 417{
261 MAGIC *mg; 418 MAGIC *mg;
262 419
263 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 420 if (!SvROK (sv)
421 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
422 || (SvSTASH (SvRV (sv)) != aio_grp_stash
423 && SvSTASH (SvRV (sv)) != aio_req_stash
424 && !sv_derived_from (sv, "IO::AIO::REQ")))
264 croak ("object of class " AIO_REQ_KLASS " expected"); 425 croak ("object of class IO::AIO::REQ expected");
265 426
266 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 427 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267 428
268 return mg ? (aio_req)mg->mg_ptr : 0; 429 return mg ? (aio_req)mg->mg_ptr : 0;
269} 430}
270 431
432static aio_wd
433SvAIO_WD (SV *sv)
434{
435 if (!SvROK (sv)
436 || SvTYPE (SvRV (sv)) != SVt_PVMG
437 || SvSTASH (SvRV (sv)) != aio_wd_stash)
438 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
439
440 return (aio_wd)(long)SvIVX (SvRV (sv));
441}
442
443static SV *
444newmortalFH (int fd, int flags)
445{
446 if (fd < 0)
447 return &PL_sv_undef;
448
449 GV *gv = (GV *)sv_newmortal ();
450 char sym[64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
454 gv_init (gv, aio_stash, sym, symlen, 0);
455
456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 fd
462 );
463
464 return do_open (gv, sym, symlen, 0, 0, 0, 0)
465 ? (SV *)gv : &PL_sv_undef;
466}
467
468static void
271static void aio_grp_feed (aio_req grp) 469aio_grp_feed (aio_req grp)
272{ 470{
273 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 471 if (grp->sv2 && SvOK (grp->sv2))
274 { 472 {
275 int old_len = grp->length;
276
277 if (grp->fh2 && SvOK (grp->fh2))
278 {
279 dSP; 473 dSP;
280 474
281 ENTER; 475 ENTER;
282 SAVETMPS; 476 SAVETMPS;
283 PUSHMARK (SP); 477 PUSHMARK (SP);
284 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 478 XPUSHs (req_sv (grp, aio_grp_stash));
285 PUTBACK; 479 PUTBACK;
286 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 480 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287 SPAGAIN; 481 SPAGAIN;
288 FREETMPS; 482 FREETMPS;
289 LEAVE; 483 LEAVE;
290 }
291
292 /* stop if no progress has been made */
293 if (old_len == grp->length)
294 {
295 SvREFCNT_dec (grp->fh2);
296 grp->fh2 = 0;
297 break;
298 }
299 } 484 }
300} 485}
301 486
302static void aio_grp_dec (aio_req grp) 487static void
488req_submit (eio_req *req)
303{ 489{
304 --grp->length; 490 eio_submit (req);
305 491
306 /* call feeder, if applicable */ 492 if (expect_false (on_next_submit))
307 aio_grp_feed (grp);
308
309 /* finish, if done */
310 if (!grp->length && grp->fd)
311 { 493 {
312 req_invoke (grp); 494 dSP;
313 req_free (grp); 495 SV *cb = sv_2mortal (on_next_submit);
496
497 on_next_submit = 0;
498
499 PUSHMARK (SP);
500 PUTBACK;
501 call_sv (cb, G_DISCARD | G_EVAL);
314 } 502 }
315} 503}
316 504
317static void poll_wait () 505static int
506req_invoke (eio_req *req)
318{ 507{
319 fd_set rfd; 508 if (req->flags & FLAG_SV2_RO_OFF)
509 SvREADONLY_off (req->sv2);
320 510
321 while (nreqs) 511 if (!EIO_CANCELLED (req) && req->callback)
322 { 512 {
323 int size;
324#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325 LOCK (reslock);
326#endif
327 size = res_queue.size;
328#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329 UNLOCK (reslock);
330#endif
331
332 if (size)
333 return;
334
335 FD_ZERO(&rfd);
336 FD_SET(respipe [0], &rfd);
337
338 select (respipe [0] + 1, &rfd, 0, 0, 0);
339 }
340}
341
342static void req_invoke (aio_req req)
343{
344 dSP; 513 dSP;
345 514 static SV *sv_result_cache; /* caches the result integer SV */
346 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 515 SV *sv_result;
347 {
348 errno = req->errorno;
349 516
350 ENTER; 517 ENTER;
351 SAVETMPS; 518 SAVETMPS;
352 PUSHMARK (SP); 519 PUSHMARK (SP);
353 EXTEND (SP, 1); 520 EXTEND (SP, 1);
354 521
522 /* do not recreate the result IV from scratch each time */
523 if (expect_true (sv_result_cache))
524 {
525 sv_result = sv_result_cache; sv_result_cache = 0;
526 SvIV_set (sv_result, req->result);
527 SvIOK_only (sv_result);
528 }
529 else
530 {
531 sv_result = newSViv (req->result);
532 SvREADONLY_on (sv_result);
533 }
534
355 switch (req->type) 535 switch (req->type)
356 { 536 {
537 case EIO_WD_OPEN:
538 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
539 break;
540
357 case REQ_READDIR: 541 case EIO_READDIR:
358 { 542 {
359 SV *rv = &PL_sv_undef; 543 SV *rv = &PL_sv_undef;
360 544
361 if (req->result >= 0) 545 if (req->result >= 0)
362 { 546 {
363 int i; 547 int i;
364 char *buf = req->data2ptr; 548 char *names = (char *)req->ptr2;
549 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365 AV *av = newAV (); 550 AV *av = newAV ();
366 551
367 av_extend (av, req->result - 1); 552 av_extend (av, req->result - 1);
368 553
369 for (i = 0; i < req->result; ++i) 554 for (i = 0; i < req->result; ++i)
370 { 555 {
371 SV *sv = newSVpv (buf, 0); 556 if (req->int1 & EIO_READDIR_DENTS)
557 {
558 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372 559
560 if (req->int1 & EIO_READDIR_CUSTOM2)
561 {
562 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
563 AV *avent = newAV ();
564
565 av_extend (avent, 2);
566
567 if (!sv_type [ent->type])
568 {
569 sv_type [ent->type] = newSViv (ent->type);
570 SvREADONLY_on (sv_type [ent->type]);
571 }
572
573 av_store (avent, 0, namesv);
574 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
575 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
576
577 av_store (av, i, newRV_noinc ((SV *)avent));
578 }
579 else
373 av_store (av, i, sv); 580 av_store (av, i, namesv);
581
582 ++ent;
583 }
584 else
585 {
586 SV *name = newSVpv (names, 0);
587 av_store (av, i, name);
374 buf += SvCUR (sv) + 1; 588 names += SvCUR (name) + 1;
589 }
375 } 590 }
376 591
377 rv = sv_2mortal (newRV_noinc ((SV *)av)); 592 rv = sv_2mortal (newRV_noinc ((SV *)av));
378 } 593 }
379 594
380 PUSHs (rv); 595 PUSHs (rv);
596
597 if (req->int1 & EIO_READDIR_CUSTOM1)
598 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381 } 599 }
382 break; 600 break;
383 601
384 case REQ_OPEN: 602 case EIO_OPEN:
603 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
604 break;
605
606 case EIO_STATVFS:
607 case EIO_FSTATVFS:
385 { 608 {
386 /* convert fd to fh */ 609 SV *rv = &PL_sv_undef;
387 SV *fh; 610
611#ifndef _WIN32
612 if (req->result >= 0)
613 {
614 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
615 HV *hv = newHV ();
616 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
617 * chooses to make it a struct.
618 */
619 unsigned long fsid = 0;
620 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
388 621
389 PUSHs (sv_2mortal (newSViv (req->result))); 622 rv = sv_2mortal (newRV_noinc ((SV *)hv));
390 PUTBACK;
391 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
392 SPAGAIN;
393 623
394 fh = SvREFCNT_inc (POPs); 624 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
625 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
626 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
627 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
628 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
629 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
630 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
631 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
632 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
633 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
634 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
635 }
636#endif
395 637
396 PUSHMARK (SP); 638 PUSHs (rv);
397 XPUSHs (sv_2mortal (fh));
398 } 639 }
640
399 break; 641 break;
400 642
401 case REQ_GROUP: 643 case EIO_GROUP:
402 req->fd = 2; /* mark group as finished */ 644 req->int1 = 2; /* mark group as finished */
403 645
404 if (req->data) 646 if (req->sv1)
405 { 647 {
406 int i; 648 int i;
407 AV *av = (AV *)req->data; 649 AV *av = (AV *)req->sv1;
408 650
409 EXTEND (SP, AvFILL (av) + 1); 651 EXTEND (SP, AvFILL (av) + 1);
410 for (i = 0; i <= AvFILL (av); ++i) 652 for (i = 0; i <= AvFILL (av); ++i)
411 PUSHs (*av_fetch (av, i, 0)); 653 PUSHs (*av_fetch (av, i, 0));
412 } 654 }
413 break; 655 break;
414 656
415 case REQ_NOP: 657 case EIO_NOP:
416 case REQ_BUSY: 658 case EIO_BUSY:
417 break; 659 break;
418 660
661 case EIO_READLINK:
662 case EIO_REALPATH:
663 if (req->result > 0)
664 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
665 break;
666
667 case EIO_STAT:
668 case EIO_LSTAT:
669 case EIO_FSTAT:
670 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
671
672 if (!(PL_laststatval = req->result))
673 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
674 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
675
676 PUSHs (sv_result);
677 break;
678
679 case EIO_SEEK:
680 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
681 break;
682
683 case EIO_READ:
684 {
685 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
686 *SvEND (req->sv2) = 0;
687 SvPOK_only (req->sv2);
688 SvSETMAGIC (req->sv2);
689 PUSHs (sv_result);
690 }
691 break;
692
693 case EIO_SLURP:
694 {
695 if (req->result >= 0)
696 {
697 /* if length was originally not known, we steal the malloc'ed memory */
698 if (req->flags & EIO_FLAG_PTR2_FREE)
699 {
700 req->flags &= ~EIO_FLAG_PTR2_FREE;
701 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
702 }
703 else
704 SvCUR_set (req->sv2, req->result);
705 }
706
707 PUSHs (sv_result);
708 }
709 break;
710
711 case EIO_CUSTOM:
712 if (req->feed == fiemap)
713 {
714#if HAVE_FIEMAP
715 if (!req->result)
716 {
717 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
718
719 if (fiemap->fm_extent_count)
720 {
721 AV *av = newAV ();
722 int i;
723
724 while (fiemap->fm_mapped_extents)
725 {
726 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
727 AV *ext_av = newAV ();
728
729 av_store (ext_av, 3, newSVuv (extent->fe_flags));
730 av_store (ext_av, 2, newSVval64 (extent->fe_length));
731 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
732 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
733
734 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
735 }
736
737 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
738 }
739 else
740 {
741 SvIV_set (sv_result, fiemap->fm_mapped_extents);
742 PUSHs (sv_result);
743 }
744 }
745#endif
746 }
747 else
748 PUSHs (sv_result);
749 break;
750
751 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
752 if (req->result > 0)
753 SvIV_set (sv_result, 0);
754 /* FALLTHROUGH */
755
419 default: 756 default:
420 PUSHs (sv_2mortal (newSViv (req->result))); 757 PUSHs (sv_result);
421 break; 758 break;
422 } 759 }
423 760
761 errno = req->errorno;
424 762
425 PUTBACK; 763 PUTBACK;
426 call_sv (req->callback, G_VOID | G_EVAL); 764 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427 SPAGAIN; 765 SPAGAIN;
766
767 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
768 SvREFCNT_dec (sv_result);
769 else
770 sv_result_cache = sv_result;
428 771
429 FREETMPS; 772 FREETMPS;
430 LEAVE; 773 LEAVE;
774
775 PUTBACK;
431 } 776 }
432 777
433 if (req->grp) 778 return !!SvTRUE (ERRSV);
434 {
435 aio_req grp = req->grp;
436
437 /* unlink request */
438 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441 if (grp->grp_first == req)
442 grp->grp_first = req->grp_next;
443
444 aio_grp_dec (grp);
445 }
446
447 if (SvTRUE (ERRSV))
448 {
449 req_free (req);
450 croak (0);
451 }
452} 779}
453 780
454static void req_free (aio_req req) 781static void
782req_destroy (aio_req req)
455{ 783{
456 if (req->self) 784 if (req->self)
457 { 785 {
458 sv_unmagic (req->self, PERL_MAGIC_ext); 786 sv_unmagic (req->self, PERL_MAGIC_ext);
459 SvREFCNT_dec (req->self); 787 SvREFCNT_dec (req->self);
460 } 788 }
461 789
462 SvREFCNT_dec (req->data);
463 SvREFCNT_dec (req->fh); 790 SvREFCNT_dec (req->sv1);
464 SvREFCNT_dec (req->fh2); 791 SvREFCNT_dec (req->sv2);
792 SvREFCNT_dec (req->sv3);
793 SvREFCNT_dec (req->sv4);
465 SvREFCNT_dec (req->callback); 794 SvREFCNT_dec (req->callback);
466 Safefree (req->statdata);
467 795
468 if (req->type == REQ_READDIR)
469 free (req->data2ptr);
470
471 Safefree (req); 796 free (req);
472} 797}
473 798
799static void
474static void req_cancel_subs (aio_req grp) 800req_cancel_subs (aio_req grp)
475{ 801{
476 aio_req sub;
477
478 if (grp->type != REQ_GROUP) 802 if (grp->type != EIO_GROUP)
479 return; 803 return;
480 804
481 SvREFCNT_dec (grp->fh2); 805 SvREFCNT_dec (grp->sv2);
482 grp->fh2 = 0; 806 grp->sv2 = 0;
483 807
484 for (sub = grp->grp_first; sub; sub = sub->grp_next) 808 eio_grp_cancel (grp);
485 req_cancel (sub);
486} 809}
487 810
488static void req_cancel (aio_req req) 811static void ecb_cold
812create_respipe (void)
489{ 813{
490 req->flags |= FLAG_CANCELLED; 814 if (s_epipe_renew (&respipe))
491 815 croak ("IO::AIO: unable to initialize result pipe");
492 req_cancel_subs (req);
493} 816}
494 817
495static int poll_cb () 818static void
819poll_wait (void)
496{ 820{
497 dSP; 821 while (eio_nreqs ())
498 int count = 0; 822 {
499 int do_croak = 0; 823 int size;
500 aio_req req;
501 824
825 X_LOCK (EIO_POOL->reslock);
826 size = EIO_POOL->res_queue.size;
827 X_UNLOCK (EIO_POOL->reslock);
828
829 if (size)
830 return;
831
832 etp_maybe_start_thread (EIO_POOL);
833
834 s_epipe_wait (&respipe);
835 }
836}
837
838static int
839poll_cb (void)
840{
502 for (;;) 841 for (;;)
503 { 842 {
504 LOCK (reslock); 843 int res = eio_poll ();
505 req = reqq_shift (&res_queue);
506 844
507 if (req) 845 if (res > 0)
846 croak (0);
847
848 if (!max_outstanding || max_outstanding > eio_nreqs ())
849 return res;
850
851 poll_wait ();
852 }
853}
854
855static void ecb_cold
856reinit (void)
857{
858 create_respipe ();
859
860 if (eio_init (want_poll, done_poll) < 0)
861 croak ("IO::AIO: unable to initialise eio library");
862}
863
864/*****************************************************************************/
865
866static SV *
867get_cb (SV *cb_sv)
868{
869 SvGETMAGIC (cb_sv);
870 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
871}
872
873static aio_req ecb_noinline
874dreq (SV *callback)
875{
876 SV *cb_cv;
877 aio_req req;
878 int req_pri = next_pri;
879 next_pri = EIO_PRI_DEFAULT;
880
881 cb_cv = get_cb (callback);
882
883 req = calloc (sizeof (*req), 1);
884 if (!req)
885 croak ("out of memory during eio_req allocation");
886
887 req->callback = SvREFCNT_inc (cb_cv);
888 req->pri = req_pri;
889
890 return req;
891}
892
893#define dREQ \
894 aio_req req = dreq (callback); \
895
896#define REQ_SEND \
897 PUTBACK; \
898 req_submit (req); \
899 SPAGAIN; \
900 \
901 if (GIMME_V != G_VOID) \
902 XPUSHs (req_sv (req, aio_req_stash));
903
904ecb_inline void
905req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
906{
907 if (expect_false (SvROK (path)))
908 {
909 SV *rv = SvRV (path);
910 SV *wdob;
911
912 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
508 { 913 {
509 if (!res_queue.size) 914 path = AvARRAY (rv)[1];
915 wdob = AvARRAY (rv)[0];
916
917 if (SvOK (wdob))
510 { 918 {
511 /* read any signals sent by the worker threads */ 919 *wd = SvAIO_WD (wdob);
512 char buf [32]; 920 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513 while (read (respipe [0], buf, 32) == 32)
514 ;
515 } 921 }
922 else
923 *wd = EIO_INVALID_WD;
516 } 924 }
517 925 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
518 UNLOCK (reslock);
519
520 if (!req)
521 break;
522
523 --nreqs;
524
525 if (req->type == REQ_QUIT)
526 started--;
527 else if (req->type == REQ_GROUP && req->length)
528 { 926 {
529 req->fd = 1; /* mark request as delayed */ 927 *wd = (aio_wd)(long)SvIVX (rv);
530 continue; 928 *wdsv = SvREFCNT_inc_NN (rv);
929 *ptr = ".";
930 return; /* path set to "." */
531 } 931 }
532 else 932 else
533 { 933 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
534 if (req->type == REQ_READ)
535 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538 SvREADONLY_off (req->data);
539
540 if (req->statdata)
541 {
542 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543 PL_laststatval = req->result;
544 PL_statcache = *(req->statdata);
545 }
546
547 req_invoke (req);
548
549 count++;
550 }
551
552 req_free (req);
553 } 934 }
554 935
555 return count; 936 *pathsv = newSVsv (path);
937 *ptr = SvPVbyte_nolen (*pathsv);
556} 938}
557 939
558static void *aio_proc(void *arg); 940static void ecb_noinline
559 941req_set_path1 (aio_req req, SV *path)
560static void start_thread (void)
561{ 942{
562 worker *wrk = calloc (1, sizeof (worker)); 943 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
944}
563 945
564 if (!wrk) 946static void ecb_noinline
565 croak ("unable to allocate worker thread data"); 947req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
948{
949 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566 950
567 sigset_t fullsigset, oldsigset; 951 switch (SvTYPE (rv))
568 pthread_attr_t attr;
569
570 pthread_attr_init (&attr);
571 pthread_attr_setstacksize (&attr, STACKSIZE);
572 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574 sigfillset (&fullsigset);
575
576 LOCK (wrklock);
577 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580 { 952 {
581 wrk->prev = &wrk_first; 953 case SVt_PVIO:
582 wrk->next = wrk_first.next; 954 case SVt_PVLV:
583 wrk_first.next->prev = wrk; 955 case SVt_PVGV:
584 wrk_first.next = wrk; 956 req->type = type_fh;
585 started++; 957 req->sv1 = newSVsv (fh_or_path);
958 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
959 break;
960
961 default:
962 req->type = type_path;
963 req_set_path1 (req, fh_or_path);
964 break;
586 } 965 }
587 else
588 free (wrk);
589
590 sigprocmask (SIG_SETMASK, &oldsigset, 0);
591 UNLOCK (wrklock);
592} 966}
593 967
594static void req_send (aio_req req) 968XS(boot_IO__AIO) ecb_cold;
595{
596 while (started < wanted && nreqs >= started)
597 start_thread ();
598 969
599 ++nreqs; 970MODULE = IO::AIO PACKAGE = IO::AIO
600 971
601 LOCK (reqlock); 972PROTOTYPES: ENABLE
602 reqq_push (&req_queue, req);
603 pthread_cond_signal (&reqwait);
604 UNLOCK (reqlock);
605 973
606 if (nreqs > max_outstanding) 974BOOT:
607 for (;;)
608 {
609 poll_cb ();
610
611 if (nreqs <= max_outstanding)
612 break;
613
614 poll_wait ();
615 }
616}
617
618static void end_thread (void)
619{ 975{
620 aio_req req; 976 static const struct {
977 const char *name;
978 IV iv;
979 } *civ, const_iv[] = {
980# define const_niv(name, value) { # name, (IV) value },
981# define const_iv(name) { # name, (IV) name },
982# define const_eio(name) { # name, (IV) EIO_ ## name },
621 983
622 Newz (0, req, 1, aio_cb); 984 /* you have to re-run ./gendef0 after adding/removing any constants here */
985 /* the first block can be undef if missing */
986 const_iv (ENOSYS)
987 const_iv (EXDEV)
988 const_iv (EBADR)
623 989
624 req->type = REQ_QUIT; 990 /* for lseek */
625 req->pri = PRI_MAX + PRI_BIAS; 991 const_iv (SEEK_DATA)
992 const_iv (SEEK_HOLE)
626 993
627 req_send (req); 994 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
628} 995 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
996 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
997 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
998 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
999 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
629 1000
630static void min_parallel (int nthreads) 1001 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
631{ 1002 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
632 if (wanted < nthreads) 1003 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
633 wanted = nthreads; 1004 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
634} 1005 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
635 1006
636static void max_parallel (int nthreads) 1007 /* the second block will be 0 when missing */
637{ 1008 const_iv (O_RDONLY)
638 int cur = started; 1009 const_iv (O_WRONLY)
1010 const_iv (O_RDWR)
1011 const_iv (O_CREAT)
1012 const_iv (O_TRUNC)
1013 const_iv (O_EXCL)
1014 const_iv (O_APPEND)
639 1015
640 if (wanted > nthreads) 1016 const_iv (O_ASYNC)
641 wanted = nthreads; 1017 const_iv (O_DIRECT)
1018 const_iv (O_NOATIME)
642 1019
643 while (cur > wanted) 1020 const_iv (O_CLOEXEC)
644 { 1021 const_iv (O_NOCTTY)
645 end_thread (); 1022 const_iv (O_NOFOLLOW)
646 cur--; 1023 const_iv (O_NONBLOCK)
647 } 1024 const_iv (O_EXEC)
1025 const_iv (O_SEARCH)
1026 const_iv (O_DIRECTORY)
1027 const_iv (O_DSYNC)
1028 const_iv (O_RSYNC)
1029 const_iv (O_SYNC)
1030 const_iv (O_PATH)
1031 const_iv (O_TMPFILE)
1032 const_iv (O_TTY_INIT)
648 1033
649 while (started > wanted) 1034 const_iv (S_IFIFO)
650 { 1035 const_iv (S_IFCHR)
651 poll_wait (); 1036 const_iv (S_IFBLK)
652 poll_cb (); 1037 const_iv (S_IFLNK)
653 } 1038 const_iv (S_IFREG)
654} 1039 const_iv (S_IFDIR)
1040 const_iv (S_IFWHT)
1041 const_iv (S_IFSOCK)
1042 const_iv (S_IFMT)
655 1043
656static void create_pipe () 1044 const_iv (ST_RDONLY)
657{ 1045 const_iv (ST_NOSUID)
658 if (pipe (respipe)) 1046 const_iv (ST_NODEV)
659 croak ("unable to initialize result pipe"); 1047 const_iv (ST_NOEXEC)
1048 const_iv (ST_SYNCHRONOUS)
1049 const_iv (ST_MANDLOCK)
1050 const_iv (ST_WRITE)
1051 const_iv (ST_APPEND)
1052 const_iv (ST_IMMUTABLE)
1053 const_iv (ST_NOATIME)
1054 const_iv (ST_NODIRATIME)
1055 const_iv (ST_RELATIME)
660 1056
661 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 1057 const_iv (PROT_NONE)
662 croak ("cannot set result pipe to nonblocking mode"); 1058 const_iv (PROT_EXEC)
1059 const_iv (PROT_READ)
1060 const_iv (PROT_WRITE)
663 1061
664 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 1062 const_iv (MAP_PRIVATE)
665 croak ("cannot set result pipe to nonblocking mode"); 1063 const_iv (MAP_SHARED)
666} 1064 const_iv (MAP_FIXED)
1065 const_iv (MAP_ANONYMOUS)
667 1066
668/*****************************************************************************/ 1067 /* linuxish */
669/* work around various missing functions */ 1068 const_iv (MAP_LOCKED)
1069 const_iv (MAP_NORESERVE)
1070 const_iv (MAP_POPULATE)
1071 const_iv (MAP_NONBLOCK)
1072 const_iv (MAP_GROWSDOWN)
1073 const_iv (MAP_32BIT)
1074 const_iv (MAP_HUGETLB)
1075 const_iv (MAP_STACK)
670 1076
671#if !HAVE_PREADWRITE 1077 const_iv (F_DUPFD_CLOEXEC)
672# define pread aio_pread
673# define pwrite aio_pwrite
674 1078
675/* 1079 const_iv (F_OFD_GETLK)
676 * make our pread/pwrite safe against themselves, but not against 1080 const_iv (F_OFD_SETLK)
677 * normal read/write by using a mutex. slows down execution a lot, 1081 const_iv (F_OFD_GETLKW)
678 * but that's your problem, not mine.
679 */
680static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681 1082
682static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 1083 const_iv (FIFREEZE)
683{ 1084 const_iv (FITHAW)
684 ssize_t res; 1085 const_iv (FITRIM)
685 off_t ooffset; 1086 const_iv (FICLONE)
1087 const_iv (FICLONERANGE)
1088 const_iv (FIDEDUPERANGE)
686 1089
687 LOCK (preadwritelock); 1090 const_iv (FS_IOC_GETFLAGS)
688 ooffset = lseek (fd, 0, SEEK_CUR); 1091 const_iv (FS_IOC_SETFLAGS)
689 lseek (fd, offset, SEEK_SET); 1092 const_iv (FS_IOC_GETVERSION)
690 res = read (fd, buf, count); 1093 const_iv (FS_IOC_SETVERSION)
691 lseek (fd, ooffset, SEEK_SET); 1094 const_iv (FS_IOC_FIEMAP)
692 UNLOCK (preadwritelock); 1095 const_iv (FS_IOC_FSGETXATTR)
1096 const_iv (FS_IOC_FSSETXATTR)
1097 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1098 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1099 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
693 1100
694 return res; 1101 const_iv (FS_KEY_DESCRIPTOR_SIZE)
695}
696 1102
697static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1103 const_iv (FS_SECRM_FL)
698{ 1104 const_iv (FS_UNRM_FL)
699 ssize_t res; 1105 const_iv (FS_COMPR_FL)
700 off_t ooffset; 1106 const_iv (FS_SYNC_FL)
1107 const_iv (FS_IMMUTABLE_FL)
1108 const_iv (FS_APPEND_FL)
1109 const_iv (FS_NODUMP_FL)
1110 const_iv (FS_NOATIME_FL)
1111 const_iv (FS_DIRTY_FL)
1112 const_iv (FS_COMPRBLK_FL)
1113 const_iv (FS_NOCOMP_FL)
1114 const_iv (FS_ENCRYPT_FL)
1115 const_iv (FS_BTREE_FL)
1116 const_iv (FS_INDEX_FL)
1117 const_iv (FS_JOURNAL_DATA_FL)
1118 const_iv (FS_NOTAIL_FL)
1119 const_iv (FS_DIRSYNC_FL)
1120 const_iv (FS_TOPDIR_FL)
1121 const_iv (FS_FL_USER_MODIFIABLE)
701 1122
702 LOCK (preadwritelock); 1123 const_iv (FS_XFLAG_REALTIME)
703 ooffset = lseek (fd, 0, SEEK_CUR); 1124 const_iv (FS_XFLAG_PREALLOC)
704 lseek (fd, offset, SEEK_SET); 1125 const_iv (FS_XFLAG_IMMUTABLE)
705 res = write (fd, buf, count); 1126 const_iv (FS_XFLAG_APPEND)
706 lseek (fd, offset, SEEK_SET); 1127 const_iv (FS_XFLAG_SYNC)
707 UNLOCK (preadwritelock); 1128 const_iv (FS_XFLAG_NOATIME)
1129 const_iv (FS_XFLAG_NODUMP)
1130 const_iv (FS_XFLAG_RTINHERIT)
1131 const_iv (FS_XFLAG_PROJINHERIT)
1132 const_iv (FS_XFLAG_NOSYMLINKS)
1133 const_iv (FS_XFLAG_EXTSIZE)
1134 const_iv (FS_XFLAG_EXTSZINHERIT)
1135 const_iv (FS_XFLAG_NODEFRAG)
1136 const_iv (FS_XFLAG_FILESTREAM)
1137 const_iv (FS_XFLAG_DAX)
1138 const_iv (FS_XFLAG_HASATTR)
708 1139
709 return res; 1140 const_iv (FIEMAP_FLAG_SYNC)
710} 1141 const_iv (FIEMAP_FLAG_XATTR)
711#endif 1142 const_iv (FIEMAP_FLAGS_COMPAT)
1143 const_iv (FIEMAP_EXTENT_LAST)
1144 const_iv (FIEMAP_EXTENT_UNKNOWN)
1145 const_iv (FIEMAP_EXTENT_DELALLOC)
1146 const_iv (FIEMAP_EXTENT_ENCODED)
1147 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1148 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1149 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1150 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1151 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1152 const_iv (FIEMAP_EXTENT_MERGED)
1153 const_iv (FIEMAP_EXTENT_SHARED)
712 1154
713#if !HAVE_FDATASYNC 1155 const_iv (SPLICE_F_MOVE)
714# define fdatasync fsync 1156 const_iv (SPLICE_F_NONBLOCK)
715#endif 1157 const_iv (SPLICE_F_MORE)
1158 const_iv (SPLICE_F_GIFT)
716 1159
717#if !HAVE_READAHEAD 1160 /* these are libeio constants, and are independent of gendef0 */
718# define readahead aio_readahead 1161 const_eio (SEEK_SET)
1162 const_eio (SEEK_CUR)
1163 const_eio (SEEK_END)
719 1164
720static ssize_t readahead (int fd, off_t offset, size_t count) 1165 const_eio (MCL_FUTURE)
721{ 1166 const_eio (MCL_CURRENT)
722 dBUF;
723 1167
724 while (count > 0) 1168 const_eio (MS_ASYNC)
725 { 1169 const_eio (MS_INVALIDATE)
726 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; 1170 const_eio (MS_SYNC)
727 1171
728 pread (fd, aio_buf, len, offset); 1172 const_eio (MT_MODIFY)
729 offset += len;
730 count -= len;
731 }
732 1173
733 errno = 0; 1174 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
734} 1175 const_eio (SYNC_FILE_RANGE_WRITE)
735#endif 1176 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
736 1177
737#if !HAVE_READDIR_R 1178 const_eio (FALLOC_FL_KEEP_SIZE)
738# define readdir_r aio_readdir_r 1179 const_eio (FALLOC_FL_PUNCH_HOLE)
1180 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1181 const_eio (FALLOC_FL_ZERO_RANGE)
1182 const_eio (FALLOC_FL_INSERT_RANGE)
1183 const_eio (FALLOC_FL_UNSHARE_RANGE)
739 1184
740static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 1185 const_eio (RENAME_NOREPLACE)
741 1186 const_eio (RENAME_EXCHANGE)
742static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 1187 const_eio (RENAME_WHITEOUT)
743{
744 struct dirent *e;
745 int errorno;
746 1188
747 LOCK (readdirlock); 1189 const_eio (READDIR_DENTS)
1190 const_eio (READDIR_DIRS_FIRST)
1191 const_eio (READDIR_STAT_ORDER)
1192 const_eio (READDIR_FOUND_UNKNOWN)
748 1193
749 e = readdir (dirp); 1194 const_eio (DT_UNKNOWN)
750 errorno = errno; 1195 const_eio (DT_FIFO)
751 1196 const_eio (DT_CHR)
752 if (e) 1197 const_eio (DT_DIR)
753 { 1198 const_eio (DT_BLK)
754 *res = ent; 1199 const_eio (DT_REG)
755 strcpy (ent->d_name, e->d_name); 1200 const_eio (DT_LNK)
756 } 1201 const_eio (DT_SOCK)
757 else 1202 const_eio (DT_WHT)
758 *res = 0;
759
760 UNLOCK (readdirlock);
761
762 errno = errorno;
763 return e ? 0 : -1;
764}
765#endif
766
767/* sendfile always needs emulation */
768static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769{
770 ssize_t res;
771
772 if (!count)
773 return 0;
774
775#if HAVE_SENDFILE
776# if __linux
777 res = sendfile (ofd, ifd, &offset, count);
778
779# elif __freebsd
780 /*
781 * Of course, the freebsd sendfile is a dire hack with no thoughts
782 * wasted on making it similar to other I/O functions.
783 */
784 {
785 off_t sbytes;
786 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787
788 if (res < 0 && sbytes)
789 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790 res = sbytes;
791 } 1203 };
792 1204
793# elif __hpux 1205 aio_stash = gv_stashpv ("IO::AIO" , 1);
794 res = sendfile (ofd, ifd, offset, count, 0, 0); 1206 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1207 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1208 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
795 1209
796# elif __solaris 1210 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
797 { 1211 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
798 struct sendfilevec vec;
799 size_t sbytes;
800 1212
801 vec.sfv_fd = ifd; 1213 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
802 vec.sfv_flag = 0;
803 vec.sfv_off = offset;
804 vec.sfv_len = count;
805 1214
806 res = sendfilev (ofd, &vec, 1, &sbytes); 1215 reinit ();
1216}
807 1217
808 if (res < 0 && sbytes) 1218void
1219reinit ()
1220 PROTOTYPE:
1221
1222void
1223max_poll_reqs (unsigned int nreqs)
1224 PROTOTYPE: $
1225 CODE:
1226 eio_set_max_poll_reqs (nreqs);
1227
1228void
1229max_poll_time (double nseconds)
1230 PROTOTYPE: $
1231 CODE:
1232 eio_set_max_poll_time (nseconds);
1233
1234void
1235min_parallel (unsigned int nthreads)
1236 PROTOTYPE: $
1237 CODE:
1238 eio_set_min_parallel (nthreads);
1239
1240void
1241max_parallel (unsigned int nthreads)
1242 PROTOTYPE: $
1243 CODE:
1244 eio_set_max_parallel (nthreads);
1245
1246void
1247max_idle (unsigned int nthreads)
1248 PROTOTYPE: $
1249 CODE:
1250 eio_set_max_idle (nthreads);
1251
1252void
1253idle_timeout (unsigned int seconds)
1254 PROTOTYPE: $
1255 CODE:
1256 eio_set_idle_timeout (seconds);
1257
1258void
1259max_outstanding (unsigned int maxreqs)
1260 PROTOTYPE: $
1261 CODE:
1262 max_outstanding = maxreqs;
1263
1264void
1265aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1266 PPCODE:
1267{
1268 dREQ;
1269
1270 req->type = EIO_WD_OPEN;
1271 req_set_path1 (req, pathname);
1272
1273 REQ_SEND;
1274}
1275
1276void
1277aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1278 PPCODE:
1279{
1280 dREQ;
1281
1282 req->type = EIO_OPEN;
1283 req_set_path1 (req, pathname);
1284 req->int1 = flags;
1285 req->int2 = mode;
1286
1287 REQ_SEND;
1288}
1289
1290void
1291aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1292 ALIAS:
1293 aio_fsync = EIO_FSYNC
1294 aio_fdatasync = EIO_FDATASYNC
1295 aio_syncfs = EIO_SYNCFS
1296 PPCODE:
1297{
1298 int fd = s_fileno_croak (fh, 0);
1299 dREQ;
1300
1301 req->type = ix;
1302 req->sv1 = newSVsv (fh);
1303 req->int1 = fd;
1304
1305 REQ_SEND;
1306}
1307
1308void
1309aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1310 PPCODE:
1311{
1312 int fd = s_fileno_croak (fh, 0);
1313 dREQ;
1314
1315 req->type = EIO_SYNC_FILE_RANGE;
1316 req->sv1 = newSVsv (fh);
1317 req->int1 = fd;
1318 req->offs = offset;
809 res = sbytes; 1319 req->size = nbytes;
810 } 1320 req->int2 = flags;
811 1321
812# endif 1322 REQ_SEND;
1323}
1324
1325void
1326aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1327 PPCODE:
1328{
1329 int fd = s_fileno_croak (fh, 0);
1330 dREQ;
1331
1332 req->type = EIO_FALLOCATE;
1333 req->sv1 = newSVsv (fh);
1334 req->int1 = fd;
1335 req->int2 = mode;
1336 req->offs = offset;
1337 req->size = len;
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_close (SV *fh, SV *callback = &PL_sv_undef)
1344 PPCODE:
1345{
1346 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1347 int fd = s_fileno_croak (fh, 0);
1348 dREQ;
1349
1350 if (expect_false (close_fd < 0))
1351 {
1352 int pipefd [2];
1353
1354 if (
1355#ifdef _WIN32
1356 _pipe (pipefd, 1, _O_BINARY) < 0
813#else 1357#else
814 res = -1; 1358 pipe (pipefd) < 0
815 errno = ENOSYS; 1359 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
816#endif 1360#endif
817 1361 || close (pipefd [1]) < 0
818 if (res < 0
819 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
820#if __solaris
821 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
822#endif
823 )
824 )
825 {
826 /* emulate sendfile. this is a major pain in the ass */
827 dBUF;
828
829 res = 0;
830
831 while (count)
832 {
833 ssize_t cnt;
834
835 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
836
837 if (cnt <= 0)
838 { 1362 )
839 if (cnt && !res) res = -1; 1363 abort (); /*D*/
840 break;
841 }
842 1364
843 cnt = write (ofd, aio_buf, cnt); 1365 close_fd = pipefd [0];
844
845 if (cnt <= 0)
846 {
847 if (cnt && !res) res = -1;
848 break;
849 }
850
851 offset += cnt;
852 res += cnt;
853 count -= cnt;
854 }
855 }
856
857 return res;
858}
859
860/* read a full directory */
861static void scandir_ (aio_req req, worker *self)
862{
863 DIR *dirp;
864 union
865 {
866 struct dirent d;
867 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868 } *u;
869 struct dirent *entp;
870 char *name, *names;
871 int memlen = 4096;
872 int memofs = 0;
873 int res = 0;
874 int errorno;
875
876 LOCK (wrklock);
877 self->dirp = dirp = opendir (req->dataptr);
878 self->dbuf = u = malloc (sizeof (*u));
879 UNLOCK (wrklock);
880
881 req->data2ptr = names = malloc (memlen);
882
883 if (dirp && u && names)
884 for (;;)
885 {
886 errno = 0;
887 readdir_r (dirp, &u->d, &entp);
888
889 if (!entp)
890 break;
891
892 name = entp->d_name;
893
894 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895 {
896 int len = strlen (name) + 1;
897
898 res++;
899
900 while (memofs + len > memlen)
901 {
902 memlen *= 2;
903 LOCK (wrklock);
904 req->data2ptr = names = realloc (names, memlen);
905 UNLOCK (wrklock);
906
907 if (!names)
908 break;
909 }
910
911 memcpy (names + memofs, name, len);
912 memofs += len;
913 } 1366 }
914 }
915 1367
916 if (errno) 1368 req->type = EIO_DUP2;
917 res = -1; 1369 req->int1 = close_fd;
918 1370 req->sv2 = newSVsv (fh);
919 req->result = res; 1371 req->int2 = fd;
920}
921 1372
922/*****************************************************************************/ 1373 REQ_SEND;
923
924static void *aio_proc (void *thr_arg)
925{
926 aio_req req;
927 int type;
928 worker *self = (worker *)thr_arg;
929
930 do
931 {
932 LOCK (reqlock);
933
934 for (;;)
935 {
936 self->req = req = reqq_shift (&req_queue);
937
938 if (req)
939 break;
940
941 pthread_cond_wait (&reqwait, &reqlock);
942 }
943
944 UNLOCK (reqlock);
945
946 errno = 0; /* strictly unnecessary */
947 type = req->type; /* remember type for QUIT check */
948
949 if (!(req->flags & FLAG_CANCELLED))
950 switch (type)
951 {
952 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963 case REQ_CLOSE: req->result = close (req->fd); break;
964 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971 case REQ_FSYNC: req->result = fsync (req->fd); break;
972 case REQ_READDIR: scandir_ (req, self); break;
973
974 case REQ_BUSY:
975 {
976 struct timeval tv;
977
978 tv.tv_sec = req->fd;
979 tv.tv_usec = req->fd2;
980
981 req->result = select (0, 0, 0, 0, &tv);
982 }
983
984 case REQ_GROUP:
985 case REQ_NOP:
986 case REQ_QUIT:
987 break;
988
989 default:
990 req->result = ENOSYS;
991 break;
992 }
993
994 req->errorno = errno;
995
996 LOCK (reslock);
997
998 if (!reqq_push (&res_queue, req))
999 /* write a dummy byte to the pipe so fh becomes ready */
1000 write (respipe [1], &respipe, 1);
1001
1002 self->req = 0;
1003 worker_clear (self);
1004
1005 UNLOCK (reslock);
1006 }
1007 while (type != REQ_QUIT);
1008
1009 LOCK (wrklock);
1010 worker_free (self);
1011 UNLOCK (wrklock);
1012
1013 return 0;
1014} 1374}
1015 1375
1016/*****************************************************************************/
1017
1018static void atfork_prepare (void)
1019{
1020 LOCK (wrklock);
1021 LOCK (reqlock);
1022 LOCK (reslock);
1023#if !HAVE_PREADWRITE
1024 LOCK (preadwritelock);
1025#endif
1026#if !HAVE_READDIR_R
1027 LOCK (readdirlock);
1028#endif
1029}
1030
1031static void atfork_parent (void)
1032{
1033#if !HAVE_READDIR_R
1034 UNLOCK (readdirlock);
1035#endif
1036#if !HAVE_PREADWRITE
1037 UNLOCK (preadwritelock);
1038#endif
1039 UNLOCK (reslock);
1040 UNLOCK (reqlock);
1041 UNLOCK (wrklock);
1042}
1043
1044static void atfork_child (void)
1045{
1046 aio_req prv;
1047
1048 while (prv = reqq_shift (&req_queue))
1049 req_free (prv);
1050
1051 while (prv = reqq_shift (&res_queue))
1052 req_free (prv);
1053
1054 while (wrk_first.next != &wrk_first)
1055 {
1056 worker *wrk = wrk_first.next;
1057
1058 if (wrk->req)
1059 req_free (wrk->req);
1060
1061 worker_clear (wrk);
1062 worker_free (wrk);
1063 }
1064
1065 started = 0;
1066 nreqs = 0;
1067
1068 close (respipe [0]);
1069 close (respipe [1]);
1070 create_pipe ();
1071
1072 atfork_parent ();
1073}
1074
1075#define dREQ \
1076 aio_req req; \
1077 int req_pri = next_pri; \
1078 next_pri = DEFAULT_PRI + PRI_BIAS; \
1079 \
1080 if (SvOK (callback) && !SvROK (callback)) \
1081 croak ("callback must be undef or of reference type"); \
1082 \
1083 Newz (0, req, 1, aio_cb); \
1084 if (!req) \
1085 croak ("out of memory during aio_req allocation"); \
1086 \
1087 req->callback = newSVsv (callback); \
1088 req->pri = req_pri
1089
1090#define REQ_SEND \
1091 req_send (req); \
1092 \
1093 if (GIMME_V != G_VOID) \
1094 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1095
1096MODULE = IO::AIO PACKAGE = IO::AIO
1097
1098PROTOTYPES: ENABLE
1099
1100BOOT:
1101{
1102 HV *stash = gv_stashpv ("IO::AIO", 1);
1103 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106
1107 create_pipe ();
1108 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109}
1110
1111void 1376void
1112min_parallel (nthreads) 1377aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1113 int nthreads
1114 PROTOTYPE: $
1115
1116void
1117max_parallel (nthreads)
1118 int nthreads
1119 PROTOTYPE: $
1120
1121int
1122max_outstanding (nreqs)
1123 int nreqs
1124 PROTOTYPE: $
1125 CODE: 1378 PPCODE:
1126 RETVAL = max_outstanding;
1127 max_outstanding = nreqs;
1128
1129void
1130aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1131 SV * pathname
1132 int flags
1133 int mode
1134 SV * callback
1135 PROTOTYPE: $$$;$
1136 PPCODE:
1137{ 1379{
1380 int fd = s_fileno_croak (fh, 0);
1138 dREQ; 1381 dREQ;
1139 1382
1140 req->type = REQ_OPEN; 1383 req->type = EIO_SEEK;
1141 req->data = newSVsv (pathname); 1384 req->sv1 = newSVsv (fh);
1142 req->dataptr = SvPVbyte_nolen (req->data); 1385 req->int1 = fd;
1143 req->fd = flags; 1386 req->offs = SvVAL64 (offset);
1144 req->mode = mode; 1387 req->int2 = whence;
1145 1388
1146 REQ_SEND; 1389 REQ_SEND;
1147} 1390}
1148 1391
1149void 1392void
1150aio_close (fh,callback=&PL_sv_undef) 1393aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1151 SV * fh
1152 SV * callback
1153 PROTOTYPE: $;$
1154 ALIAS: 1394 ALIAS:
1155 aio_close = REQ_CLOSE
1156 aio_fsync = REQ_FSYNC
1157 aio_fdatasync = REQ_FDATASYNC
1158 PPCODE:
1159{
1160 dREQ;
1161
1162 req->type = ix;
1163 req->fh = newSVsv (fh);
1164 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1165
1166 REQ_SEND (req);
1167}
1168
1169void
1170aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1171 SV * fh
1172 UV offset
1173 UV length
1174 SV * data
1175 UV dataoffset
1176 SV * callback
1177 ALIAS:
1178 aio_read = REQ_READ 1395 aio_read = EIO_READ
1179 aio_write = REQ_WRITE 1396 aio_write = EIO_WRITE
1180 PROTOTYPE: $$$$$;$
1181 PPCODE: 1397 PPCODE:
1182{ 1398{
1183 aio_req req;
1184 STRLEN svlen; 1399 STRLEN svlen;
1400 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185 char *svptr = SvPVbyte (data, svlen); 1401 char *svptr = SvPVbyte (data, svlen);
1186 1402 UV len = SvUV (length);
1187 SvUPGRADE (data, SVt_PV);
1188 SvPOK_on (data);
1189 1403
1190 if (dataoffset < 0) 1404 if (dataoffset < 0)
1191 dataoffset += svlen; 1405 dataoffset += svlen;
1192 1406
1193 if (dataoffset < 0 || dataoffset > svlen) 1407 if (dataoffset < 0 || dataoffset > svlen)
1194 croak ("data offset outside of string"); 1408 croak ("dataoffset outside of data scalar");
1195 1409
1196 if (ix == REQ_WRITE) 1410 if (ix == EIO_WRITE)
1197 { 1411 {
1198 /* write: check length and adjust. */ 1412 /* write: check length and adjust. */
1199 if (length < 0 || length + dataoffset > svlen) 1413 if (!SvOK (length) || len + dataoffset > svlen)
1200 length = svlen - dataoffset; 1414 len = svlen - dataoffset;
1201 } 1415 }
1202 else 1416 else
1203 { 1417 {
1204 /* read: grow scalar as necessary */ 1418 /* read: check type and grow scalar as necessary */
1419 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1205 svptr = SvGROW (data, length + dataoffset); 1420 svptr = sv_grow (data, len + dataoffset);
1421 else if (SvCUR (data) < len + dataoffset)
1422 croak ("length + dataoffset outside of scalar, and cannot grow");
1206 } 1423 }
1207
1208 if (length < 0)
1209 croak ("length must not be negative");
1210 1424
1211 { 1425 {
1212 dREQ; 1426 dREQ;
1213 1427
1214 req->type = ix; 1428 req->type = ix;
1215 req->fh = newSVsv (fh); 1429 req->sv1 = newSVsv (fh);
1216 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1430 req->int1 = fd;
1217 : IoOFP (sv_2io (fh))); 1431 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218 req->offset = offset; 1432 req->size = len;
1219 req->length = length;
1220 req->data = SvREFCNT_inc (data); 1433 req->sv2 = SvREFCNT_inc (data);
1221 req->dataptr = (char *)svptr + dataoffset; 1434 req->ptr2 = (char *)svptr + dataoffset;
1435 req->stroffset = dataoffset;
1222 1436
1223 if (!SvREADONLY (data)) 1437 if (!SvREADONLY (data))
1224 { 1438 {
1225 SvREADONLY_on (data); 1439 SvREADONLY_on (data);
1226 req->data2ptr = (void *)data; 1440 req->flags |= FLAG_SV2_RO_OFF;
1227 } 1441 }
1228 1442
1229 REQ_SEND; 1443 REQ_SEND;
1230 } 1444 }
1231} 1445}
1232 1446
1233void 1447void
1234aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1448aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1235 SV * out_fh 1449 ALIAS:
1236 SV * in_fh 1450 aio_ioctl = EIO_IOCTL
1237 UV in_offset 1451 aio_fcntl = EIO_FCNTL
1238 UV length
1239 SV * callback
1240 PROTOTYPE: $$$$;$
1241 PPCODE: 1452 PPCODE:
1242{ 1453{
1243 dREQ; 1454 int fd = s_fileno_croak (fh, 0);
1455 char *svptr;
1244 1456
1245 req->type = REQ_SENDFILE; 1457 if (SvPOK (arg) || !SvNIOK (arg))
1246 req->fh = newSVsv (out_fh);
1247 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1248 req->fh2 = newSVsv (in_fh);
1249 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1250 req->offset = in_offset;
1251 req->length = length;
1252
1253 REQ_SEND;
1254}
1255
1256void
1257aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1258 SV * fh
1259 UV offset
1260 IV length
1261 SV * callback
1262 PROTOTYPE: $$$;$
1263 PPCODE:
1264{
1265 dREQ;
1266
1267 req->type = REQ_READAHEAD;
1268 req->fh = newSVsv (fh);
1269 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1270 req->offset = offset;
1271 req->length = length;
1272
1273 REQ_SEND;
1274}
1275
1276void
1277aio_stat (fh_or_path,callback=&PL_sv_undef)
1278 SV * fh_or_path
1279 SV * callback
1280 ALIAS:
1281 aio_stat = REQ_STAT
1282 aio_lstat = REQ_LSTAT
1283 PPCODE:
1284{
1285 dREQ;
1286
1287 New (0, req->statdata, 1, Stat_t);
1288 if (!req->statdata)
1289 { 1458 {
1290 req_free (req); 1459 STRLEN svlen;
1291 croak ("out of memory during aio_req->statdata allocation"); 1460 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1292 } 1461#ifdef IOCPARM_LEN
1462 STRLEN need = IOCPARM_LEN (request);
1463#else
1464 STRLEN need = 256;
1465#endif
1293 1466
1294 if (SvPOK (fh_or_path)) 1467 if (svlen < need)
1295 { 1468 svptr = SvGROW (arg, need);
1296 req->type = ix;
1297 req->data = newSVsv (fh_or_path);
1298 req->dataptr = SvPVbyte_nolen (req->data);
1299 } 1469 }
1300 else 1470 else
1471 svptr = (char *)SvIV (arg);
1472
1301 { 1473 {
1474 dREQ;
1475
1302 req->type = REQ_FSTAT; 1476 req->type = ix;
1303 req->fh = newSVsv (fh_or_path); 1477 req->sv1 = newSVsv (fh);
1304 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1478 req->int1 = fd;
1479 req->int2 = (long)request;
1480 req->sv2 = SvREFCNT_inc (arg);
1481 req->ptr2 = svptr;
1482
1483 REQ_SEND;
1305 } 1484 }
1485}
1486
1487void
1488aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1489 ALIAS:
1490 aio_readlink = EIO_READLINK
1491 aio_realpath = EIO_REALPATH
1492 PPCODE:
1493{
1494 dREQ;
1495
1496 req->type = ix;
1497 req_set_path1 (req, pathname);
1306 1498
1307 REQ_SEND; 1499 REQ_SEND;
1308} 1500}
1309 1501
1310void 1502void
1311aio_unlink (pathname,callback=&PL_sv_undef) 1503aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1312 SV * pathname 1504 PPCODE:
1313 SV * callback 1505{
1506 int ifd = s_fileno_croak (in_fh , 0);
1507 int ofd = s_fileno_croak (out_fh, 1);
1508 dREQ;
1509
1510 req->type = EIO_SENDFILE;
1511 req->sv1 = newSVsv (out_fh);
1512 req->int1 = ofd;
1513 req->sv2 = newSVsv (in_fh);
1514 req->int2 = ifd;
1515 req->offs = in_offset;
1516 req->size = length;
1517
1518 REQ_SEND;
1519}
1520
1521void
1522aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1523 PPCODE:
1524{
1525 int fd = s_fileno_croak (fh, 0);
1526 dREQ;
1527
1528 req->type = EIO_READAHEAD;
1529 req->sv1 = newSVsv (fh);
1530 req->int1 = fd;
1531 req->offs = offset;
1532 req->size = length;
1533
1534 REQ_SEND;
1535}
1536
1537void
1538aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1314 ALIAS: 1539 ALIAS:
1540 aio_stat = EIO_STAT
1541 aio_lstat = EIO_LSTAT
1542 aio_statvfs = EIO_STATVFS
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1548
1549 REQ_SEND;
1550}
1551
1552UV
1553major (UV dev)
1554 ALIAS:
1555 minor = 1
1556 CODE:
1557 RETVAL = ix ? minor (dev) : major (dev);
1558 OUTPUT:
1559 RETVAL
1560
1561UV
1562makedev (UV maj, UV min)
1563 CODE:
1564 RETVAL = makedev (maj, min);
1565 OUTPUT:
1566 RETVAL
1567
1568void
1569aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1570 PPCODE:
1571{
1572 dREQ;
1573
1574 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1575 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1576 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1577
1578 REQ_SEND;
1579}
1580
1581void
1582aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1583 PPCODE:
1584{
1585 dREQ;
1586
1587 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1588 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1589
1590 REQ_SEND;
1591}
1592
1593void
1594aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1595 PPCODE:
1596{
1597 dREQ;
1598
1599 req->int2 = mode;
1600 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1601
1602 REQ_SEND;
1603}
1604
1605void
1606aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1607 PPCODE:
1608{
1609 dREQ;
1610
1611 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1612 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1613 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1614
1615 REQ_SEND;
1616}
1617
1618void
1619aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1620 PPCODE:
1621{
1622 dREQ;
1623
1624 req->type = EIO_READDIR;
1625 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1626
1627 if (flags & EIO_READDIR_DENTS)
1628 req->int1 |= EIO_READDIR_CUSTOM2;
1629
1630 req_set_path1 (req, pathname);
1631
1632 REQ_SEND;
1633}
1634
1635void
1636aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1637 PPCODE:
1638{
1639 dREQ;
1640
1641 req->type = EIO_MKDIR;
1642 req->int2 = mode;
1643 req_set_path1 (req, pathname);
1644
1645 REQ_SEND;
1646}
1647
1648void
1649aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1650 ALIAS:
1315 aio_unlink = REQ_UNLINK 1651 aio_unlink = EIO_UNLINK
1316 aio_rmdir = REQ_RMDIR 1652 aio_rmdir = EIO_RMDIR
1317 aio_readdir = REQ_READDIR 1653 aio_readdir = EIO_READDIR
1318 PPCODE: 1654 PPCODE:
1319{ 1655{
1320 dREQ; 1656 dREQ;
1321 1657
1322 req->type = ix; 1658 req->type = ix;
1323 req->data = newSVsv (pathname); 1659 req_set_path1 (req, pathname);
1324 req->dataptr = SvPVbyte_nolen (req->data); 1660
1325
1326 REQ_SEND; 1661 REQ_SEND;
1327} 1662}
1328 1663
1329void 1664void
1330aio_link (oldpath,newpath,callback=&PL_sv_undef) 1665aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1331 SV * oldpath
1332 SV * newpath
1333 SV * callback
1334 ALIAS: 1666 ALIAS:
1335 aio_link = REQ_LINK 1667 aio_link = EIO_LINK
1336 aio_symlink = REQ_SYMLINK 1668 aio_symlink = EIO_SYMLINK
1337 aio_rename = REQ_RENAME 1669 aio_rename = EIO_RENAME
1338 PPCODE: 1670 PPCODE:
1339{ 1671{
1672 eio_wd wd2 = 0;
1340 dREQ; 1673 dREQ;
1341 1674
1342 req->type = ix; 1675 req->type = ix;
1343 req->fh = newSVsv (oldpath); 1676 req_set_path1 (req, oldpath);
1344 req->data2ptr = SvPVbyte_nolen (req->fh); 1677 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1345 req->data = newSVsv (newpath); 1678 req->int3 = (long)wd2;
1346 req->dataptr = SvPVbyte_nolen (req->data);
1347 1679
1348 REQ_SEND; 1680 REQ_SEND;
1349} 1681}
1350 1682
1351void 1683void
1352aio_busy (delay,callback=&PL_sv_undef) 1684aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1353 double delay
1354 SV * callback
1355 PPCODE: 1685 PPCODE:
1356{ 1686{
1687 eio_wd wd2 = 0;
1357 dREQ; 1688 dREQ;
1358 1689
1359 req->type = REQ_BUSY; 1690 req->type = EIO_RENAME;
1360 req->fd = delay < 0. ? 0 : delay; 1691 req_set_path1 (req, oldpath);
1361 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1692 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1362 1693 req->int2 = flags;
1694 req->int3 = (long)wd2;
1695
1363 REQ_SEND; 1696 REQ_SEND;
1364} 1697}
1365 1698
1366void 1699void
1367aio_group (callback=&PL_sv_undef) 1700aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1368 SV * callback 1701 PPCODE:
1369 PROTOTYPE: ;$ 1702{
1703 dREQ;
1704
1705 req->type = EIO_MKNOD;
1706 req->int2 = (mode_t)mode;
1707 req->offs = dev;
1708 req_set_path1 (req, pathname);
1709
1710 REQ_SEND;
1711}
1712
1713void
1714aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1715 ALIAS:
1716 aio_mtouch = EIO_MTOUCH
1717 aio_msync = EIO_MSYNC
1370 PPCODE: 1718 PPCODE:
1371{ 1719{
1720 STRLEN svlen;
1721 char *svptr = SvPVbyte (data, svlen);
1722 UV len = SvUV (length);
1723
1724 if (flags < 0)
1725 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1726
1727 if (offset < 0)
1728 offset += svlen;
1729
1730 if (offset < 0 || offset > svlen)
1731 croak ("offset outside of scalar");
1732
1733 if (!SvOK (length) || len + offset > svlen)
1734 len = svlen - offset;
1735
1736 {
1737 dREQ;
1738
1739 req->type = ix;
1740 req->sv2 = SvREFCNT_inc (data);
1741 req->ptr2 = (char *)svptr + offset;
1742 req->size = len;
1743 req->int1 = flags;
1744
1745 REQ_SEND;
1746 }
1747}
1748
1749void
1750aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1751 PPCODE:
1752{
1753 STRLEN svlen;
1754 char *svptr = SvPVbyte (data, svlen);
1755 UV len = SvUV (length);
1756
1757 if (offset < 0)
1758 offset += svlen;
1759
1760 if (offset < 0 || offset > svlen)
1761 croak ("offset outside of scalar");
1762
1763 if (!SvOK (length) || len + offset > svlen)
1764 len = svlen - offset;
1765
1766 {
1767 dREQ;
1768
1769 req->type = EIO_MLOCK;
1770 req->sv2 = SvREFCNT_inc (data);
1771 req->ptr2 = (char *)svptr + offset;
1772 req->size = len;
1773
1774 REQ_SEND;
1775 }
1776}
1777
1778void
1779aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1780 PPCODE:
1781{
1782 dREQ;
1783
1784 req->type = EIO_MLOCKALL;
1785 req->int1 = flags;
1786
1787 REQ_SEND;
1788}
1789
1790void
1791aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1792 PPCODE:
1793{
1794 int fd = s_fileno_croak (fh, 0);
1372 dREQ; 1795 dREQ;
1373 1796
1374 req->type = REQ_GROUP; 1797 req->type = EIO_CUSTOM;
1375 req_send (req); 1798 req->sv1 = newSVsv (fh);
1799 req->int1 = fd;
1376 1800
1377 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1801 req->feed = fiemap;
1378} 1802#if HAVE_FIEMAP
1803 /* keep our fingers crossed that the next two types are 64 bit */
1804 req->offs = start;
1805 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1806 req->int2 = flags;
1807 req->int3 = SvOK (count) ? SvIV (count) : -1;
1808#endif
1379 1809
1810 REQ_SEND;
1811}
1812
1380void 1813void
1381aio_nop (callback=&PL_sv_undef) 1814aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1382 SV * callback 1815 PPCODE:
1816{
1817 char *svptr = 0;
1818
1819 sv_clear_foreign (data);
1820
1821 if (length) /* known length, directly read into scalar */
1822 {
1823 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1824 svptr = sv_grow (data, length);
1825 else if (SvCUR (data) < length)
1826 croak ("length outside of scalar, and cannot grow");
1827 else
1828 svptr = SvPVbyte_nolen (data);
1829 }
1830
1831 {
1832 dREQ;
1833
1834 req->type = EIO_SLURP;
1835 req_set_path1 (req, pathname);
1836 req->offs = offset;
1837 req->size = length;
1838 req->sv2 = SvREFCNT_inc (data);
1839 req->ptr2 = svptr;
1840
1841 if (!SvREADONLY (data))
1842 {
1843 SvREADONLY_on (data);
1844 req->flags |= FLAG_SV2_RO_OFF;
1845 }
1846
1847 REQ_SEND;
1848 }
1849}
1850
1851void
1852aio_busy (double delay, SV *callback = &PL_sv_undef)
1383 PPCODE: 1853 PPCODE:
1384{ 1854{
1385 dREQ; 1855 dREQ;
1386 1856
1387 req->type = REQ_NOP; 1857 req->type = EIO_BUSY;
1858 req->nv1 = delay < 0. ? 0. : delay;
1388 1859
1389 REQ_SEND; 1860 REQ_SEND;
1390} 1861}
1391 1862
1392void 1863void
1393aioreq_pri (int pri = DEFAULT_PRI) 1864aio_group (SV *callback = &PL_sv_undef)
1394 CODE: 1865 PPCODE:
1866{
1867 dREQ;
1868
1869 req->type = EIO_GROUP;
1870
1871 PUTBACK;
1872 req_submit (req);
1873 SPAGAIN;
1874
1875 XPUSHs (req_sv (req, aio_grp_stash));
1876}
1877
1878void
1879aio_nop (SV *callback = &PL_sv_undef)
1880 ALIAS:
1881 aio_nop = EIO_NOP
1882 aio_sync = EIO_SYNC
1883 PPCODE:
1884{
1885 dREQ;
1886
1887 req->type = ix;
1888
1889 REQ_SEND;
1890}
1891
1892int
1893aioreq_pri (int pri = NO_INIT)
1894 CODE:
1895 RETVAL = next_pri;
1896 if (items > 0)
1897 {
1395 if (pri < PRI_MIN) pri = PRI_MIN; 1898 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396 if (pri > PRI_MAX) pri = PRI_MAX; 1899 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397 next_pri = pri + PRI_BIAS; 1900 next_pri = pri;
1901 }
1902 OUTPUT:
1903 RETVAL
1398 1904
1399void 1905void
1400aioreq_nice (int nice = 0) 1906aioreq_nice (int nice = 0)
1401 CODE: 1907 CODE:
1402 nice = next_pri - nice; 1908 nice = next_pri - nice;
1403 if (nice < PRI_MIN) nice = PRI_MIN; 1909 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404 if (nice > PRI_MAX) nice = PRI_MAX; 1910 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405 next_pri = nice + PRI_BIAS; 1911 next_pri = nice;
1406 1912
1407void 1913void
1408flush () 1914flush ()
1409 PROTOTYPE:
1410 CODE: 1915 CODE:
1411 while (nreqs) 1916 while (eio_nreqs ())
1412 { 1917 {
1413 poll_wait (); 1918 poll_wait ();
1414 poll_cb (); 1919 poll_cb ();
1415 } 1920 }
1416 1921
1417void 1922int
1418poll() 1923poll ()
1419 PROTOTYPE:
1420 CODE: 1924 CODE:
1421 if (nreqs)
1422 {
1423 poll_wait (); 1925 poll_wait ();
1424 poll_cb (); 1926 RETVAL = poll_cb ();
1425 }
1426
1427int
1428poll_fileno()
1429 PROTOTYPE:
1430 CODE:
1431 RETVAL = respipe [0];
1432 OUTPUT: 1927 OUTPUT:
1433 RETVAL 1928 RETVAL
1434 1929
1435int 1930int
1931poll_fileno ()
1932 CODE:
1933 RETVAL = s_epipe_fd (&respipe);
1934 OUTPUT:
1935 RETVAL
1936
1937int
1436poll_cb(...) 1938poll_cb (...)
1437 PROTOTYPE: 1939 PROTOTYPE:
1438 CODE: 1940 CODE:
1439 RETVAL = poll_cb (); 1941 RETVAL = poll_cb ();
1440 OUTPUT: 1942 OUTPUT:
1441 RETVAL 1943 RETVAL
1442 1944
1443void 1945void
1444poll_wait() 1946poll_wait ()
1445 PROTOTYPE:
1446 CODE: 1947 CODE:
1447 if (nreqs)
1448 poll_wait (); 1948 poll_wait ();
1449 1949
1450int 1950int
1451nreqs() 1951nreqs ()
1452 PROTOTYPE:
1453 CODE: 1952 CODE:
1454 RETVAL = nreqs; 1953 RETVAL = eio_nreqs ();
1455 OUTPUT: 1954 OUTPUT:
1456 RETVAL 1955 RETVAL
1457 1956
1957int
1958nready ()
1959 CODE:
1960 RETVAL = eio_nready ();
1961 OUTPUT:
1962 RETVAL
1963
1964int
1965npending ()
1966 CODE:
1967 RETVAL = eio_npending ();
1968 OUTPUT:
1969 RETVAL
1970
1971int
1972nthreads ()
1973 CODE:
1974 RETVAL = eio_nthreads ();
1975 OUTPUT:
1976 RETVAL
1977
1978int
1979fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1980 CODE:
1981 RETVAL = posix_fadvise (fh, offset, length, advice);
1982 OUTPUT:
1983 RETVAL
1984
1985IV
1986sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1987 CODE:
1988 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1989 OUTPUT:
1990 RETVAL
1991
1992void
1993mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1994 PPCODE:
1995 sv_clear_foreign (scalar);
1996{
1997 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1998 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1999 if (addr == (void *)-1)
2000 XSRETURN_NO;
2001
2002 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2003
2004 if (!(prot & PROT_WRITE))
2005 SvREADONLY_on (scalar);
2006
2007 XSRETURN_YES;
2008}
2009
2010void
2011munmap (SV *scalar)
2012 CODE:
2013 sv_clear_foreign (scalar);
2014
2015int
2016madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2017 ALIAS:
2018 mprotect = 1
2019 CODE:
2020{
2021 STRLEN svlen;
2022 void *addr = SvPVbyte (scalar, svlen);
2023 STRLEN len = SvUV (length);
2024
2025 if (offset < 0)
2026 offset += svlen;
2027
2028 if (offset < 0 || offset > svlen)
2029 croak ("offset outside of scalar");
2030
2031 if (!SvOK (length) || len + offset > svlen)
2032 len = svlen - offset;
2033
2034 addr = (void *)(((intptr_t)addr) + offset);
2035 eio_page_align (&addr, &len);
2036
2037 switch (ix)
2038 {
2039 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2040 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2041 }
2042}
2043 OUTPUT:
2044 RETVAL
2045
2046int
2047munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2048 CODE:
2049{
2050 STRLEN svlen;
2051 void *addr = SvPVbyte (scalar, svlen);
2052 size_t len = SvUV (length);
2053
2054 if (offset < 0)
2055 offset += svlen;
2056
2057 if (offset < 0 || offset > svlen)
2058 croak ("offset outside of scalar");
2059
2060 if (!SvOK (length) || len + offset > svlen)
2061 len = svlen - offset;
2062
2063 addr = (void *)(((intptr_t)addr) + offset);
2064 eio_page_align (&addr, &len);
2065#if _POSIX_MEMLOCK_RANGE
2066 RETVAL = munlock (addr, len);
2067#else
2068 RETVAL = EIO_ENOSYS ();
2069#endif
2070}
2071 OUTPUT:
2072 RETVAL
2073
2074int
2075munlockall ()
2076 CODE:
2077#if _POSIX_MEMLOCK
2078 munlockall ();
2079#else
2080 RETVAL = EIO_ENOSYS ();
2081#endif
2082 OUTPUT:
2083 RETVAL
2084
2085int
2086splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2087 CODE:
2088{
2089#if HAVE_LINUX_SPLICE
2090 loff_t off_in_, off_out_;
2091 RETVAL = splice (
2092 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2093 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2094 length, flags
2095 );
2096#else
2097 RETVAL = EIO_ENOSYS ();
2098#endif
2099}
2100 OUTPUT:
2101 RETVAL
2102
2103int
2104tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2105 CODE:
2106#if HAVE_LINUX_SPLICE
2107 RETVAL = tee (rfh, wfh, length, flags);
2108#else
2109 RETVAL = EIO_ENOSYS ();
2110#endif
2111 OUTPUT:
2112 RETVAL
2113
2114int
2115pipesize (aio_rfd rfh, int new_size = -1)
2116 PROTOTYPE: $;$
2117 CODE:
2118#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2119 if (new_size >= 0)
2120 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2121 else
2122 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2123#else
2124 errno = ENOSYS;
2125 RETVAL = -1;
2126#endif
2127 OUTPUT:
2128 RETVAL
2129
2130void
2131pipe2 (int flags = 0)
2132 PROTOTYPE: ;$
2133 PPCODE:
2134{
2135 int fd[2];
2136 int res;
2137
2138 if (flags)
2139#if HAVE_PIPE2
2140 res = pipe2 (fd, flags);
2141#else
2142 res = (errno = ENOSYS, -1);
2143#endif
2144 else
2145 res = pipe (fd);
2146
2147 if (!res)
2148 {
2149 EXTEND (SP, 2);
2150 PUSHs (newmortalFH (fd[0], O_RDONLY));
2151 PUSHs (newmortalFH (fd[1], O_WRONLY));
2152 }
2153}
2154
2155UV
2156get_fdlimit ()
2157 CODE:
2158#if HAVE_RLIMITS
2159 struct rlimit rl;
2160 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2161 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2162#endif
2163 XSRETURN_UNDEF;
2164 OUTPUT:
2165 RETVAL
2166
2167void
2168min_fdlimit (UV limit = 0x7fffffffU)
2169 CODE:
2170{
2171#if HAVE_RLIMITS
2172 struct rlimit rl;
2173 rlim_t orig_rlim_max;
2174 UV bit;
2175
2176 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2177 goto fail;
2178
2179 if (rl.rlim_cur == RLIM_INFINITY)
2180 XSRETURN_YES;
2181
2182 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2183
2184 if (rl.rlim_cur < limit)
2185 {
2186 rl.rlim_cur = limit;
2187
2188 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2189 rl.rlim_max = rl.rlim_cur;
2190 }
2191
2192 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2193 XSRETURN_YES;
2194
2195 if (errno == EPERM)
2196 {
2197 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2198 /* our limit overflows a system-wide limit */
2199 /* try an adaptive algorithm, but do not lower the hardlimit */
2200 rl.rlim_max = 0;
2201 for (bit = 0x40000000U; bit; bit >>= 1)
2202 {
2203 rl.rlim_max |= bit;
2204 rl.rlim_cur = rl.rlim_max;
2205
2206 /* nevr decrease the hard limit */
2207 if (rl.rlim_max < orig_rlim_max)
2208 break;
2209
2210 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2211 rl.rlim_max &= ~bit; /* too high, remove bit again */
2212 }
2213
2214 /* now, raise the soft limit to the max permitted */
2215 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2216 {
2217 rl.rlim_cur = rl.rlim_max;
2218 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2219 errno = EPERM;
2220 }
2221 }
2222#endif
2223 fail:
2224 XSRETURN_UNDEF;
2225}
2226
2227void _on_next_submit (SV *cb)
2228 CODE:
2229 SvREFCNT_dec (on_next_submit);
2230 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2231
1458PROTOTYPES: DISABLE 2232PROTOTYPES: DISABLE
2233
2234MODULE = IO::AIO PACKAGE = IO::AIO::WD
2235
2236BOOT:
2237{
2238 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2239 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2240}
2241
2242void
2243DESTROY (SV *self)
2244 CODE:
2245{
2246 aio_wd wd = SvAIO_WD (self);
2247#if HAVE_AT
2248 {
2249 SV *callback = &PL_sv_undef;
2250 dREQ; /* clobbers next_pri :/ */
2251 next_pri = req->pri; /* restore next_pri */
2252 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2253 req->type = EIO_WD_CLOSE;
2254 req->wd = wd;
2255 REQ_SEND;
2256 }
2257#else
2258 eio_wd_close_sync (wd);
2259#endif
2260}
1459 2261
1460MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2262MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461 2263
1462void 2264void
1463cancel (aio_req_ornot req) 2265cancel (aio_req_ornot req)
1464 CODE: 2266 CODE:
1465 req_cancel (req); 2267 eio_cancel (req);
1466 2268
1467void 2269void
1468cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2270cb (aio_req_ornot req, SV *callback = NO_INIT)
1469 CODE: 2271 PPCODE:
2272{
2273 if (GIMME_V != G_VOID)
2274 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2275
2276 if (items > 1)
2277 {
2278 SV *cb_cv = get_cb (callback);
2279
1470 SvREFCNT_dec (req->callback); 2280 SvREFCNT_dec (req->callback);
1471 req->callback = newSVsv (callback); 2281 req->callback = SvREFCNT_inc (cb_cv);
2282 }
2283}
1472 2284
1473MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2285MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474 2286
1475void 2287void
1476add (aio_req grp, ...) 2288add (aio_req grp, ...)
1477 PPCODE: 2289 PPCODE:
1478{ 2290{
1479 int i; 2291 int i;
1480 aio_req req;
1481 2292
1482 if (grp->fd == 2) 2293 if (grp->int1 == 2)
1483 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2294 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484 2295
1485 for (i = 1; i < items; ++i ) 2296 for (i = 1; i < items; ++i )
1486 { 2297 {
2298 aio_req req;
2299
1487 if (GIMME_V != G_VOID) 2300 if (GIMME_V != G_VOID)
1488 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2301 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489 2302
1490 req = SvAIO_REQ (ST (i)); 2303 req = SvAIO_REQ (ST (i));
1491 2304
1492 if (req) 2305 if (req)
1493 { 2306 eio_grp_add (grp, req);
1494 ++grp->length;
1495 req->grp = grp;
1496
1497 req->grp_prev = 0;
1498 req->grp_next = grp->grp_first;
1499
1500 if (grp->grp_first)
1501 grp->grp_first->grp_prev = req;
1502
1503 grp->grp_first = req;
1504 }
1505 } 2307 }
1506} 2308}
1507 2309
1508void 2310void
1509cancel_subs (aio_req_ornot req) 2311cancel_subs (aio_req_ornot req)
… …
1513void 2315void
1514result (aio_req grp, ...) 2316result (aio_req grp, ...)
1515 CODE: 2317 CODE:
1516{ 2318{
1517 int i; 2319 int i;
2320 AV *av;
2321
2322 grp->errorno = errno;
2323
1518 AV *av = newAV (); 2324 av = newAV ();
2325 av_extend (av, items - 1);
1519 2326
1520 for (i = 1; i < items; ++i ) 2327 for (i = 1; i < items; ++i )
1521 av_push (av, newSVsv (ST (i))); 2328 av_push (av, newSVsv (ST (i)));
1522 2329
1523 SvREFCNT_dec (grp->data); 2330 SvREFCNT_dec (grp->sv1);
1524 grp->data = (SV *)av; 2331 grp->sv1 = (SV *)av;
1525} 2332}
2333
2334void
2335errno (aio_req grp, int errorno = errno)
2336 CODE:
2337 grp->errorno = errorno;
1526 2338
1527void 2339void
1528limit (aio_req grp, int limit) 2340limit (aio_req grp, int limit)
1529 CODE: 2341 CODE:
1530 grp->fd2 = limit; 2342 eio_grp_limit (grp, limit);
1531 aio_grp_feed (grp);
1532 2343
1533void 2344void
1534feed (aio_req grp, SV *callback=&PL_sv_undef) 2345feed (aio_req grp, SV *callback = &PL_sv_undef)
1535 CODE: 2346 CODE:
1536{ 2347{
1537 SvREFCNT_dec (grp->fh2); 2348 SvREFCNT_dec (grp->sv2);
1538 grp->fh2 = newSVsv (callback); 2349 grp->sv2 = newSVsv (callback);
2350 grp->feed = aio_grp_feed;
1539 2351
1540 if (grp->fd2 <= 0) 2352 if (grp->int2 <= 0)
1541 grp->fd2 = 2; 2353 grp->int2 = 2;
1542 2354
1543 aio_grp_feed (grp); 2355 eio_grp_limit (grp, grp->int2);
1544} 2356}
1545 2357

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