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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.261 by root, Tue Jul 24 19:32:20 2018 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux
5# define _GNU_SOURCE
6#endif
7
8#define _REENTRANT 1
9 2
10#include <errno.h> 3#include <errno.h>
11 4
12#include "EXTERN.h" 5#include "EXTERN.h"
13#include "perl.h" 6#include "perl.h"
14#include "XSUB.h" 7#include "XSUB.h"
15 8
16#include "autoconf/config.h" 9#if !defined mg_findext
17 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
18#include <pthread.h> 11#endif
19 12
20#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
21#include <errno.h> 15#include <errno.h>
22#include <sys/time.h>
23#include <sys/select.h>
24#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
25#include <sys/stat.h> 18#include <sys/stat.h>
26#include <limits.h> 19#include <limits.h>
27#include <unistd.h>
28#include <fcntl.h> 20#include <fcntl.h>
29#include <signal.h>
30#include <sched.h> 21#include <sched.h>
31 22
32#if HAVE_SENDFILE 23#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> 24# include <sys/mman.h>
38# elif __hpux 25#endif
26
27/* the incompetent fool that created musl keeps __linux__, refuses
28 * to implement any linux standard apis, and also has no way to test
29 * for his broken iplementation. don't complain to me if this fails
30 * for you.
31 */
32#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
33# include <linux/fs.h>
34# ifdef FS_IOC_FIEMAP
35# include <linux/types.h>
36# include <linux/fiemap.h>
37# define HAVE_FIEMAP 1
38# endif
39#endif
40
41/* perl namespace pollution */
42#undef VERSION
43
44/* perl stupidly overrides readdir and maybe others */
45/* with thread-unsafe versions, imagine that :( */
46#undef readdir
47#undef opendir
48#undef closedir
49
50#ifdef _WIN32
51
52 // perl overrides all those nice libc functions
53
54 #undef malloc
55 #undef free
56 #undef open
57 #undef read
58 #undef write
59 #undef send
60 #undef recv
61 #undef stat
62 #undef lstat
63 #undef fstat
64 #undef truncate
65 #undef ftruncate
66 #undef open
67 #undef link
68 #undef close
69 #undef unlink
70 #undef mkdir
71 #undef rmdir
72 #undef rename
73 #undef lseek
74 #undef opendir
75 #undef readdir
76 #undef closedir
77 #undef chmod
78 #undef fchmod
79 #undef dup
80 #undef dup2
81 #undef abort
82 #undef pipe
83
84 #define EIO_STRUCT_STAT struct _stati64
85 #define EIO_STRUCT_STATI64
86
87#else
88
39# include <sys/socket.h> 89 #include <sys/time.h>
40# elif __solaris /* not yet */
41# include <sys/sendfile.h> 90 #include <sys/select.h>
91 #include <unistd.h>
92 #include <utime.h>
93 #include <signal.h>
94
95 #define EIO_STRUCT_STAT Stat_t
96
97#endif
98
99/*****************************************************************************/
100
101#if __GNUC__ >= 3
102# define expect(expr,value) __builtin_expect ((expr),(value))
103#else
104# define expect(expr,value) (expr)
105#endif
106
107#define expect_false(expr) expect ((expr) != 0, 0)
108#define expect_true(expr) expect ((expr) != 0, 1)
109
110/*****************************************************************************/
111
112#include "libeio/config.h"
113
114#include "schmorp.h"
115
116#if HAVE_EVENTFD
117# include <sys/eventfd.h>
118#endif
119
120#if HAVE_TIMERFD
121# include <sys/timerfd.h>
122#endif
123
124#if HAVE_RLIMITS
125 #include <sys/time.h>
126 #include <sys/resource.h>
127#endif
128
129typedef SV SV8; /* byte-sv, used for argument-checking */
130typedef int aio_rfd; /* read file desriptor */
131typedef int aio_wfd; /* write file descriptor */
132
133static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
134
135#define EIO_REQ_MEMBERS \
136 SV *callback; \
137 SV *sv1, *sv2; \
138 SV *sv3, *sv4; \
139 STRLEN stroffset; \
140 SV *self;
141
142#define EIO_NO_WRAPPERS 1
143
144#include "libeio/eio.h"
145
146static int req_invoke (eio_req *req);
147#define EIO_FINISH(req) req_invoke (req)
148static void req_destroy (eio_req *grp);
149#define EIO_DESTROY(req) req_destroy (req)
150
151#include "libeio/eio.c"
152
153#if !HAVE_POSIX_FADVISE
154# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
155#endif
156
157#if !HAVE_POSIX_MADVISE
158# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
159#endif
160
161#ifndef MAP_ANONYMOUS
162# ifdef MAP_ANON
163# define MAP_ANONYMOUS MAP_ANON
42# else 164# else
43# error sendfile support requested but not available 165# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44# endif 166# endif
45#endif 167#endif
46 168
47/* used for struct dirent, AIX doesn't provide it */ 169#ifndef makedev
48#ifndef NAME_MAX 170# define makedev(maj,min) (((maj) << 8) | (min))
49# define NAME_MAX 4096
50#endif 171#endif
51 172#ifndef major
52#if __ia64 173# define major(dev) ((dev) >> 8)
53# define STACKSIZE 65536
54#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55# define STACKSIZE PTHREAD_STACK_MIN
56#else
57# define STACKSIZE 16384
58#endif 174#endif
175#ifndef minor
176# define minor(dev) ((dev) & 0xff)
177#endif
59 178
60/* buffer size for various temporary buffers */ 179#if PAGESIZE <= 0
61#define AIO_BUFSIZE 65536 180# define PAGESIZE sysconf (_SC_PAGESIZE)
181#endif
62 182
63#define dBUF \ 183/*****************************************************************************/
64 char *aio_buf; \ 184
65 LOCK (wrklock); \ 185#if !_POSIX_MAPPED_FILES
66 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 186# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
67 UNLOCK (wrklock); \ 187# define munmap(addr,length) EIO_ENOSYS ()
68 if (!aio_buf) \ 188#endif
189
190#if !_POSIX_MEMORY_PROTECTION
191# define mprotect(addr,len,prot) EIO_ENOSYS ()
192#endif
193
194#if !MREMAP_MAYMOVE
195# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
196#endif
197
198#define FOREIGN_MAGIC PERL_MAGIC_ext
199
200static int ecb_cold
201mmap_free (pTHX_ SV *sv, MAGIC *mg)
202{
203 int old_errno = errno;
204 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
205 errno = old_errno;
206
207 mg->mg_obj = 0; /* just in case */
208
209 SvREADONLY_off (sv);
210
211 if (SvPVX (sv) != mg->mg_ptr)
212 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
213
214 SvCUR_set (sv, 0);
215 SvPVX (sv) = 0;
216 SvOK_off (sv);
217
69 return -1; 218 return 0;
219}
70 220
71enum { 221static MGVTBL mmap_vtbl = {
72 REQ_QUIT, 222 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}; 223};
84 224
85#define AIO_REQ_KLASS "IO::AIO::REQ" 225static int ecb_cold
86#define AIO_GRP_KLASS "IO::AIO::GRP" 226sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88typedef struct aio_cb
89{ 227{
90 struct aio_cb *volatile next; 228 free (mg->mg_ptr);
229 mg->mg_obj = 0; /* just in case */
91 230
92 SV *data, *callback; 231 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;
99 232
100 STRLEN dataoffset; 233 if (SvPVX (sv) != mg->mg_ptr)
101 int type; 234 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102 int fd, fd2;
103 int errorno;
104 mode_t mode; /* open */
105 235
106 unsigned char flags; 236 SvCUR_set (sv, 0);
107 unsigned char pri; 237 SvPVX (sv) = 0;
238 SvOK_off (sv);
108 239
109 SV *self; /* the perl counterpart of this request, if any */ 240 return 0;
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 241}
111} aio_cb;
112 242
113enum { 243static MGVTBL sysfree_vtbl = {
114 FLAG_CANCELLED = 0x01, 244 0, 0, 0, 0, sysfree_free
115}; 245};
116 246
117typedef aio_cb *aio_req; 247/*****************************************************************************/
118typedef aio_cb *aio_req_ornot;
119 248
120enum { 249/* helper: set scalar to foreign ptr with custom free */
121 PRI_MIN = -4, 250static void
122 PRI_MAX = 4, 251sv_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{ 252{
164 if (wrk->dirp) 253 sv_force_normal (sv);
254
255 /* we store the length in mg_obj, as namlen is I32 :/ */
256 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
257 ->mg_obj = (SV *)length;
258
259 SvUPGRADE (sv, SVt_PV); /* nop... */
260
261 if (SvLEN (sv))
262 Safefree (SvPVX (sv));
263
264 SvPVX (sv) = (char *)addr;
265 SvCUR_set (sv, length);
266 SvLEN_set (sv, 0);
267 SvPOK_only (sv);
268}
269
270static void
271sv_clear_foreign (SV *sv)
272{
273 /* todo: iterate over magic and only free ours, but of course */
274 /* the perl5porters will call that (correct) behaviour buggy */
275 sv_unmagic (sv, FOREIGN_MAGIC);
276}
277
278/*****************************************************************************/
279
280/* defines all sorts of constants to 0 unless they are already defined */
281/* also provides const_iv_ and const_niv_ macros for them */
282#include "def0.h"
283
284/*****************************************************************************/
285
286static void
287fiemap (eio_req *req)
288{
289 req->result = -1;
290
291#if HAVE_FIEMAP
292 /* assume some c99 */
293 struct fiemap *fiemap = 0;
294 size_t end_offset;
295 int count = req->int3;
296
297 req->flags |= EIO_FLAG_PTR1_FREE;
298
299 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
300 /* increase in 3.5kb steps */
301 if (count < 0)
302 count = 8;
303
304 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
305 errno = ENOMEM;
306 if (!fiemap)
307 return;
308
309 req->ptr1 = fiemap;
310
311 fiemap->fm_start = req->offs;
312 fiemap->fm_length = req->size;
313 fiemap->fm_flags = req->int2;
314 fiemap->fm_extent_count = count;
315
316 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
317 return;
318
319 if (req->int3 >= 0 /* not autosizing */
320 || !fiemap->fm_mapped_extents /* no more extents */
321 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
322 goto done;
323
324 /* else we have to loop -
325 * it would be tempting (actually I tried that first) to just query the
326 * number of extents needed, but linux often feels like not returning all
327 * extents, without telling us it left any out. this complicates
328 * this quite a bit.
329 */
330
331 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
332
333 for (;;)
165 { 334 {
166 closedir (wrk->dirp); 335 /* 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; 336 char scratch[3072];
168 } 337 struct fiemap *incmap = (struct fiemap *)scratch;
169 338
170 if (wrk->dbuf) 339 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
171 { 340 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
172 free (wrk->dbuf); 341 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
173 wrk->dbuf = 0; 342 incmap->fm_flags = fiemap->fm_flags;
174 } 343 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
175}
176 344
177static void worker_free (worker *wrk) 345 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; 346 return;
224 347
225 --q->size; 348 if (!incmap->fm_mapped_extents)
349 goto done;
226 350
227 for (pri = NUM_PRI; pri--; ) 351 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
228 { 352 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
229 aio_req req = q->qs[pri]; 353 errno = ENOMEM;
230
231 if (req) 354 if (!fiemap)
355 return;
356
357 req->ptr1 = fiemap;
358
359 for (count = 0; count < incmap->fm_mapped_extents; ++count)
232 { 360 {
233 if (!(q->qs[pri] = req->next)) 361 struct fiemap_extent *e = incmap->fm_extents + count;
234 q->qe[pri] = 0;
235 362
236 return req; 363 if (e->fe_logical + e->fe_length >= end_offset)
364 goto done;
365
366 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
367
368 if (e->fe_flags & FIEMAP_EXTENT_LAST)
369 goto done;
370
237 } 371 }
238 } 372 }
239 373
240 abort (); 374done:
241} 375 req->result = 0;
242 376
243static void req_invoke (aio_req req); 377#else
378 errno = ENOSYS;
379#endif
380}
381
382/*****************************************************************************/
383
384enum {
385 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
386};
387
388typedef eio_req *aio_req;
389typedef eio_req *aio_req_ornot;
390typedef eio_wd aio_wd;
391
392static SV *on_next_submit;
393static int next_pri = EIO_PRI_DEFAULT;
394static int max_outstanding;
395
396static s_epipe respipe;
397
244static void req_free (aio_req req); 398static void req_destroy (aio_req req);
245static void req_cancel (aio_req req); 399static void req_cancel (aio_req req);
246 400
401static void
402want_poll (void)
403{
404 /* write a dummy byte to the pipe so fh becomes ready */
405 s_epipe_signal (&respipe);
406}
407
408static void
409done_poll (void)
410{
411 /* read any signals sent by the worker threads */
412 s_epipe_drain (&respipe);
413}
414
247/* must be called at most once */ 415/* must be called at most once */
248static SV *req_sv (aio_req req, const char *klass) 416static SV *
417req_sv (aio_req req, HV *stash)
249{ 418{
250 if (!req->self) 419 if (!req->self)
251 { 420 {
252 req->self = (SV *)newHV (); 421 req->self = (SV *)newHV ();
253 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 422 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254 } 423 }
255 424
256 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 425 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257} 426}
258 427
259static aio_req SvAIO_REQ (SV *sv) 428static SV *
429newSVaio_wd (aio_wd wd)
430{
431 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
432}
433
434static aio_req
435SvAIO_REQ (SV *sv)
260{ 436{
261 MAGIC *mg; 437 MAGIC *mg;
262 438
263 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 439 if (!SvROK (sv)
440 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
441 || (SvSTASH (SvRV (sv)) != aio_grp_stash
442 && SvSTASH (SvRV (sv)) != aio_req_stash
443 && !sv_derived_from (sv, "IO::AIO::REQ")))
264 croak ("object of class " AIO_REQ_KLASS " expected"); 444 croak ("object of class IO::AIO::REQ expected");
265 445
266 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 446 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267 447
268 return mg ? (aio_req)mg->mg_ptr : 0; 448 return mg ? (aio_req)mg->mg_ptr : 0;
269} 449}
270 450
451static aio_wd
452SvAIO_WD (SV *sv)
453{
454 if (!SvROK (sv)
455 || SvTYPE (SvRV (sv)) != SVt_PVMG
456 || SvSTASH (SvRV (sv)) != aio_wd_stash)
457 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
458
459 return (aio_wd)(long)SvIVX (SvRV (sv));
460}
461
462static SV *
463newmortalFH (int fd, int flags)
464{
465 if (fd < 0)
466 return &PL_sv_undef;
467
468 GV *gv = (GV *)sv_newmortal ();
469 char sym[64];
470 int symlen;
471
472 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
473 gv_init (gv, aio_stash, sym, symlen, 0);
474
475 symlen = snprintf (
476 sym,
477 sizeof (sym),
478 "%s&=%d",
479 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
480 fd
481 );
482
483 return do_open (gv, sym, symlen, 0, 0, 0, 0)
484 ? (SV *)gv : &PL_sv_undef;
485}
486
487static void
271static void aio_grp_feed (aio_req grp) 488aio_grp_feed (aio_req grp)
272{ 489{
273 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 490 if (grp->sv2 && SvOK (grp->sv2))
274 { 491 {
275 int old_len = grp->length;
276
277 if (grp->fh2 && SvOK (grp->fh2))
278 {
279 dSP; 492 dSP;
280 493
281 ENTER; 494 ENTER;
282 SAVETMPS; 495 SAVETMPS;
283 PUSHMARK (SP); 496 PUSHMARK (SP);
284 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 497 XPUSHs (req_sv (grp, aio_grp_stash));
285 PUTBACK; 498 PUTBACK;
286 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 499 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287 SPAGAIN; 500 SPAGAIN;
288 FREETMPS; 501 FREETMPS;
289 LEAVE; 502 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 } 503 }
300} 504}
301 505
302static void aio_grp_dec (aio_req grp) 506static void
507req_submit (eio_req *req)
303{ 508{
304 --grp->length; 509 eio_submit (req);
305 510
306 /* call feeder, if applicable */ 511 if (expect_false (on_next_submit))
307 aio_grp_feed (grp);
308
309 /* finish, if done */
310 if (!grp->length && grp->fd)
311 { 512 {
312 req_invoke (grp); 513 dSP;
313 req_free (grp); 514 SV *cb = sv_2mortal (on_next_submit);
515
516 on_next_submit = 0;
517
518 PUSHMARK (SP);
519 PUTBACK;
520 call_sv (cb, G_DISCARD | G_EVAL);
314 } 521 }
315} 522}
316 523
317static void poll_wait () 524static int
525req_invoke (eio_req *req)
318{ 526{
319 fd_set rfd; 527 if (req->flags & FLAG_SV2_RO_OFF)
528 SvREADONLY_off (req->sv2);
320 529
321 while (nreqs) 530 if (!EIO_CANCELLED (req) && req->callback)
322 { 531 {
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; 532 dSP;
345 533 static SV *sv_result_cache; /* caches the result integer SV */
346 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 534 SV *sv_result;
347 {
348 errno = req->errorno;
349 535
350 ENTER; 536 ENTER;
351 SAVETMPS; 537 SAVETMPS;
352 PUSHMARK (SP); 538 PUSHMARK (SP);
353 EXTEND (SP, 1); 539 EXTEND (SP, 1);
354 540
541 /* do not recreate the result IV from scratch each time */
542 if (expect_true (sv_result_cache))
543 {
544 sv_result = sv_result_cache; sv_result_cache = 0;
545 SvIV_set (sv_result, req->result);
546 SvIOK_only (sv_result);
547 }
548 else
549 {
550 sv_result = newSViv (req->result);
551 SvREADONLY_on (sv_result);
552 }
553
355 switch (req->type) 554 switch (req->type)
356 { 555 {
556 case EIO_WD_OPEN:
557 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
558 break;
559
357 case REQ_READDIR: 560 case EIO_READDIR:
358 { 561 {
359 SV *rv = &PL_sv_undef; 562 SV *rv = &PL_sv_undef;
360 563
361 if (req->result >= 0) 564 if (req->result >= 0)
362 { 565 {
363 int i; 566 int i;
364 char *buf = req->data2ptr; 567 char *names = (char *)req->ptr2;
568 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365 AV *av = newAV (); 569 AV *av = newAV ();
366 570
367 av_extend (av, req->result - 1); 571 av_extend (av, req->result - 1);
368 572
369 for (i = 0; i < req->result; ++i) 573 for (i = 0; i < req->result; ++i)
370 { 574 {
371 SV *sv = newSVpv (buf, 0); 575 if (req->int1 & EIO_READDIR_DENTS)
576 {
577 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372 578
579 if (req->int1 & EIO_READDIR_CUSTOM2)
580 {
581 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
582 AV *avent = newAV ();
583
584 av_extend (avent, 2);
585
586 if (!sv_type [ent->type])
587 {
588 sv_type [ent->type] = newSViv (ent->type);
589 SvREADONLY_on (sv_type [ent->type]);
590 }
591
592 av_store (avent, 0, namesv);
593 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
594 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
595
596 av_store (av, i, newRV_noinc ((SV *)avent));
597 }
598 else
373 av_store (av, i, sv); 599 av_store (av, i, namesv);
600
601 ++ent;
602 }
603 else
604 {
605 SV *name = newSVpv (names, 0);
606 av_store (av, i, name);
374 buf += SvCUR (sv) + 1; 607 names += SvCUR (name) + 1;
608 }
375 } 609 }
376 610
377 rv = sv_2mortal (newRV_noinc ((SV *)av)); 611 rv = sv_2mortal (newRV_noinc ((SV *)av));
378 } 612 }
379 613
380 PUSHs (rv); 614 PUSHs (rv);
615
616 if (req->int1 & EIO_READDIR_CUSTOM1)
617 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381 } 618 }
382 break; 619 break;
383 620
384 case REQ_OPEN: 621 case EIO_OPEN:
622 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
623 break;
624
625 case EIO_STATVFS:
626 case EIO_FSTATVFS:
385 { 627 {
386 /* convert fd to fh */ 628 SV *rv = &PL_sv_undef;
387 SV *fh; 629
630#ifndef _WIN32
631 if (req->result >= 0)
632 {
633 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
634 HV *hv = newHV ();
635 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
636 * chooses to make it a struct.
637 */
638 unsigned long fsid = 0;
639 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
388 640
389 PUSHs (sv_2mortal (newSViv (req->result))); 641 rv = sv_2mortal (newRV_noinc ((SV *)hv));
390 PUTBACK;
391 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
392 SPAGAIN;
393 642
394 fh = SvREFCNT_inc (POPs); 643 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
644 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
645 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
646 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
647 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
648 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
649 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
650 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
651 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
652 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
653 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
654 }
655#endif
395 656
396 PUSHMARK (SP); 657 PUSHs (rv);
397 XPUSHs (sv_2mortal (fh));
398 } 658 }
659
399 break; 660 break;
400 661
401 case REQ_GROUP: 662 case EIO_GROUP:
402 req->fd = 2; /* mark group as finished */ 663 req->int1 = 2; /* mark group as finished */
403 664
404 if (req->data) 665 if (req->sv1)
405 { 666 {
406 int i; 667 int i;
407 AV *av = (AV *)req->data; 668 AV *av = (AV *)req->sv1;
408 669
409 EXTEND (SP, AvFILL (av) + 1); 670 EXTEND (SP, AvFILL (av) + 1);
410 for (i = 0; i <= AvFILL (av); ++i) 671 for (i = 0; i <= AvFILL (av); ++i)
411 PUSHs (*av_fetch (av, i, 0)); 672 PUSHs (*av_fetch (av, i, 0));
412 } 673 }
413 break; 674 break;
414 675
415 case REQ_NOP: 676 case EIO_NOP:
416 case REQ_BUSY: 677 case EIO_BUSY:
417 break; 678 break;
418 679
680 case EIO_READLINK:
681 case EIO_REALPATH:
682 if (req->result > 0)
683 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
684 break;
685
686 case EIO_STAT:
687 case EIO_LSTAT:
688 case EIO_FSTAT:
689 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
690
691 if (!(PL_laststatval = req->result))
692 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
693 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
694
695 PUSHs (sv_result);
696 break;
697
698 case EIO_SEEK:
699 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
700 break;
701
702 case EIO_READ:
703 {
704 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
705 *SvEND (req->sv2) = 0;
706 SvPOK_only (req->sv2);
707 SvSETMAGIC (req->sv2);
708 PUSHs (sv_result);
709 }
710 break;
711
712 case EIO_SLURP:
713 {
714 if (req->result >= 0)
715 {
716 /* if length was originally not known, we steal the malloc'ed memory */
717 if (req->flags & EIO_FLAG_PTR2_FREE)
718 {
719 req->flags &= ~EIO_FLAG_PTR2_FREE;
720 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
721 }
722 else
723 {
724 SvCUR_set (req->sv2, req->result);
725 *SvEND (req->sv2) = 0;
726 SvPOK_only (req->sv2);
727 }
728
729 SvSETMAGIC (req->sv2);
730 }
731
732 PUSHs (sv_result);
733 }
734 break;
735
736 case EIO_CUSTOM:
737 if (req->feed == fiemap)
738 {
739#if HAVE_FIEMAP
740 if (!req->result)
741 {
742 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
743
744 if (fiemap->fm_extent_count)
745 {
746 AV *av = newAV ();
747 int i;
748
749 while (fiemap->fm_mapped_extents)
750 {
751 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
752 AV *ext_av = newAV ();
753
754 av_store (ext_av, 3, newSVuv (extent->fe_flags));
755 av_store (ext_av, 2, newSVval64 (extent->fe_length));
756 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
757 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
758
759 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
760 }
761
762 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
763 }
764 else
765 {
766 SvIV_set (sv_result, fiemap->fm_mapped_extents);
767 PUSHs (sv_result);
768 }
769 }
770#endif
771 }
772 else
773 PUSHs (sv_result);
774 break;
775
776 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
777 if (req->result > 0)
778 SvIV_set (sv_result, 0);
779 /* FALLTHROUGH */
780
419 default: 781 default:
420 PUSHs (sv_2mortal (newSViv (req->result))); 782 PUSHs (sv_result);
421 break; 783 break;
422 } 784 }
423 785
786 errno = req->errorno;
424 787
425 PUTBACK; 788 PUTBACK;
426 call_sv (req->callback, G_VOID | G_EVAL); 789 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427 SPAGAIN; 790 SPAGAIN;
791
792 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
793 SvREFCNT_dec (sv_result);
794 else
795 sv_result_cache = sv_result;
428 796
429 FREETMPS; 797 FREETMPS;
430 LEAVE; 798 LEAVE;
799
800 PUTBACK;
431 } 801 }
432 802
433 if (req->grp) 803 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} 804}
453 805
454static void req_free (aio_req req) 806static void
807req_destroy (aio_req req)
455{ 808{
456 if (req->self) 809 if (req->self)
457 { 810 {
458 sv_unmagic (req->self, PERL_MAGIC_ext); 811 sv_unmagic (req->self, PERL_MAGIC_ext);
459 SvREFCNT_dec (req->self); 812 SvREFCNT_dec (req->self);
460 } 813 }
461 814
462 SvREFCNT_dec (req->data);
463 SvREFCNT_dec (req->fh); 815 SvREFCNT_dec (req->sv1);
464 SvREFCNT_dec (req->fh2); 816 SvREFCNT_dec (req->sv2);
817 SvREFCNT_dec (req->sv3);
818 SvREFCNT_dec (req->sv4);
465 SvREFCNT_dec (req->callback); 819 SvREFCNT_dec (req->callback);
466 Safefree (req->statdata);
467 820
468 if (req->type == REQ_READDIR)
469 free (req->data2ptr);
470
471 Safefree (req); 821 free (req);
472} 822}
473 823
824static void
474static void req_cancel_subs (aio_req grp) 825req_cancel_subs (aio_req grp)
475{ 826{
476 aio_req sub;
477
478 if (grp->type != REQ_GROUP) 827 if (grp->type != EIO_GROUP)
479 return; 828 return;
480 829
481 SvREFCNT_dec (grp->fh2); 830 SvREFCNT_dec (grp->sv2);
482 grp->fh2 = 0; 831 grp->sv2 = 0;
483 832
484 for (sub = grp->grp_first; sub; sub = sub->grp_next) 833 eio_grp_cancel (grp);
485 req_cancel (sub);
486} 834}
487 835
488static void req_cancel (aio_req req) 836static void ecb_cold
837create_respipe (void)
489{ 838{
490 req->flags |= FLAG_CANCELLED; 839 if (s_epipe_renew (&respipe))
491 840 croak ("IO::AIO: unable to initialize result pipe");
492 req_cancel_subs (req);
493} 841}
494 842
495static int poll_cb () 843static void
844poll_wait (void)
496{ 845{
497 dSP; 846 while (eio_nreqs ())
498 int count = 0; 847 {
499 int do_croak = 0; 848 int size;
500 aio_req req;
501 849
850 X_LOCK (EIO_POOL->reslock);
851 size = EIO_POOL->res_queue.size;
852 X_UNLOCK (EIO_POOL->reslock);
853
854 if (size)
855 return;
856
857 etp_maybe_start_thread (EIO_POOL);
858
859 s_epipe_wait (&respipe);
860 }
861}
862
863static int
864poll_cb (void)
865{
502 for (;;) 866 for (;;)
503 { 867 {
504 LOCK (reslock); 868 int res = eio_poll ();
505 req = reqq_shift (&res_queue);
506 869
507 if (req) 870 if (res > 0)
871 croak (0);
872
873 if (!max_outstanding || max_outstanding > eio_nreqs ())
874 return res;
875
876 poll_wait ();
877 }
878}
879
880static void ecb_cold
881reinit (void)
882{
883 create_respipe ();
884
885 if (eio_init (want_poll, done_poll) < 0)
886 croak ("IO::AIO: unable to initialise eio library");
887}
888
889/*****************************************************************************/
890
891static SV *
892get_cb (SV *cb_sv)
893{
894 SvGETMAGIC (cb_sv);
895 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
896}
897
898static aio_req ecb_noinline
899dreq (SV *callback)
900{
901 SV *cb_cv;
902 aio_req req;
903 int req_pri = next_pri;
904 next_pri = EIO_PRI_DEFAULT;
905
906 cb_cv = get_cb (callback);
907
908 req = calloc (sizeof (*req), 1);
909 if (!req)
910 croak ("out of memory during eio_req allocation");
911
912 req->callback = SvREFCNT_inc (cb_cv);
913 req->pri = req_pri;
914
915 return req;
916}
917
918#define dREQ \
919 aio_req req = dreq (callback); \
920
921#define REQ_SEND \
922 PUTBACK; \
923 req_submit (req); \
924 SPAGAIN; \
925 \
926 if (GIMME_V != G_VOID) \
927 XPUSHs (req_sv (req, aio_req_stash));
928
929ecb_inline void
930req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
931{
932 if (expect_false (SvROK (path)))
933 {
934 SV *rv = SvRV (path);
935 SV *wdob;
936
937 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
508 { 938 {
509 if (!res_queue.size) 939 path = AvARRAY (rv)[1];
940 wdob = AvARRAY (rv)[0];
941
942 if (SvOK (wdob))
510 { 943 {
511 /* read any signals sent by the worker threads */ 944 *wd = SvAIO_WD (wdob);
512 char buf [32]; 945 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513 while (read (respipe [0], buf, 32) == 32)
514 ;
515 } 946 }
947 else
948 *wd = EIO_INVALID_WD;
516 } 949 }
517 950 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 { 951 {
529 req->fd = 1; /* mark request as delayed */ 952 *wd = (aio_wd)(long)SvIVX (rv);
530 continue; 953 *wdsv = SvREFCNT_inc_NN (rv);
954 *ptr = ".";
955 return; /* path set to "." */
531 } 956 }
532 else 957 else
533 { 958 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 } 959 }
554 960
555 return count; 961 *pathsv = newSVsv (path);
962 *ptr = SvPVbyte_nolen (*pathsv);
556} 963}
557 964
558static void *aio_proc(void *arg); 965static void ecb_noinline
559 966req_set_path1 (aio_req req, SV *path)
560static void start_thread (void)
561{ 967{
562 sigset_t fullsigset, oldsigset; 968 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
563 pthread_attr_t attr; 969}
564 970
565 worker *wrk = calloc (1, sizeof (worker)); 971static void ecb_noinline
972req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
973{
974 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566 975
567 if (!wrk) 976 switch (SvTYPE (rv))
568 croak ("unable to allocate worker thread data");
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 { 977 {
581 wrk->prev = &wrk_first; 978 case SVt_PVIO:
582 wrk->next = wrk_first.next; 979 case SVt_PVLV:
583 wrk_first.next->prev = wrk; 980 case SVt_PVGV:
584 wrk_first.next = wrk; 981 req->type = type_fh;
585 started++; 982 req->sv1 = newSVsv (fh_or_path);
983 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
984 break;
985
986 default:
987 req->type = type_path;
988 req_set_path1 (req, fh_or_path);
989 break;
586 } 990 }
587 else
588 free (wrk);
589
590 sigprocmask (SIG_SETMASK, &oldsigset, 0);
591 UNLOCK (wrklock);
592}
593
594static void req_send (aio_req req)
595{
596 while (started < wanted && nreqs >= started)
597 start_thread ();
598
599 ++nreqs;
600
601 LOCK (reqlock);
602 reqq_push (&req_queue, req);
603 pthread_cond_signal (&reqwait);
604 UNLOCK (reqlock);
605
606 if (nreqs > max_outstanding)
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{
620 aio_req req;
621
622 Newz (0, req, 1, aio_cb);
623
624 req->type = REQ_QUIT;
625 req->pri = PRI_MAX + PRI_BIAS;
626
627 req_send (req);
628}
629
630static void min_parallel (int nthreads)
631{
632 if (wanted < nthreads)
633 wanted = nthreads;
634}
635
636static void max_parallel (int nthreads)
637{
638 int cur = started;
639
640 if (wanted > nthreads)
641 wanted = nthreads;
642
643 while (cur > wanted)
644 {
645 end_thread ();
646 cur--;
647 }
648
649 while (started > wanted)
650 {
651 poll_wait ();
652 poll_cb ();
653 }
654}
655
656static void create_pipe ()
657{
658 if (pipe (respipe))
659 croak ("unable to initialize result pipe");
660
661 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
662 croak ("cannot set result pipe to nonblocking mode");
663
664 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
665 croak ("cannot set result pipe to nonblocking mode");
666} 991}
667 992
668/*****************************************************************************/ 993/*****************************************************************************/
669/* work around various missing functions */
670 994
671#if !HAVE_PREADWRITE 995static void
672# define pread aio_pread 996ts_set (struct timespec *ts, NV value)
673# define pwrite aio_pwrite
674
675/*
676 * make our pread/pwrite safe against themselves, but not against
677 * normal read/write by using a mutex. slows down execution a lot,
678 * but that's your problem, not mine.
679 */
680static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681
682static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
683{ 997{
684 ssize_t res; 998 ts->tv_sec = value;
685 off_t ooffset; 999 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
686
687 LOCK (preadwritelock);
688 ooffset = lseek (fd, 0, SEEK_CUR);
689 lseek (fd, offset, SEEK_SET);
690 res = read (fd, buf, count);
691 lseek (fd, ooffset, SEEK_SET);
692 UNLOCK (preadwritelock);
693
694 return res;
695} 1000}
696 1001
697static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1002static NV
1003ts_get (const struct timespec *ts)
698{ 1004{
699 ssize_t res; 1005 return ts->tv_sec + ts->tv_nsec * 1e-9;
700 off_t ooffset;
701
702 LOCK (preadwritelock);
703 ooffset = lseek (fd, 0, SEEK_CUR);
704 lseek (fd, offset, SEEK_SET);
705 res = write (fd, buf, count);
706 lseek (fd, offset, SEEK_SET);
707 UNLOCK (preadwritelock);
708
709 return res;
710} 1006}
711#endif
712 1007
713#if !HAVE_FDATASYNC 1008/*****************************************************************************/
714# define fdatasync fsync
715#endif
716 1009
717#if !HAVE_READAHEAD 1010XS(boot_IO__AIO) ecb_cold;
718# define readahead aio_readahead
719 1011
720static ssize_t readahead (int fd, off_t offset, size_t count) 1012MODULE = IO::AIO PACKAGE = IO::AIO
721{
722 dBUF;
723 1013
724 while (count > 0) 1014PROTOTYPES: ENABLE
725 {
726 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
727 1015
728 pread (fd, aio_buf, len, offset); 1016BOOT:
729 offset += len;
730 count -= len;
731 }
732
733 errno = 0;
734}
735#endif
736
737#if !HAVE_READDIR_R
738# define readdir_r aio_readdir_r
739
740static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743{ 1017{
744 struct dirent *e; 1018 static const struct {
745 int errorno; 1019 const char *name;
1020 IV iv;
1021 } *civ, const_iv[] = {
1022# define const_niv(name, value) { # name, (IV) value },
1023# define const_iv(name) { # name, (IV) name },
1024# define const_eio(name) { # name, (IV) EIO_ ## name },
746 1025
747 LOCK (readdirlock); 1026 /* you have to re-run ./gendef0 after adding/removing any constants here */
1027 /* the first block can be undef if missing */
1028 const_iv (ENOSYS)
1029 const_iv (EXDEV)
1030 const_iv (EBADR)
748 1031
749 e = readdir (dirp); 1032 /* for lseek */
750 errorno = errno; 1033 const_iv (SEEK_DATA)
1034 const_iv (SEEK_HOLE)
751 1035
752 if (e) 1036 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
753 { 1037 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
754 *res = ent; 1038 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
755 strcpy (ent->d_name, e->d_name); 1039 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
756 } 1040 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
757 else 1041 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
758 *res = 0;
759 1042
760 UNLOCK (readdirlock); 1043 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1044 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1045 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1046 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1047 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
761 1048
762 errno = errorno; 1049 /* the second block will be 0 when missing */
763 return e ? 0 : -1; 1050 const_iv (O_ACCMODE)
764}
765#endif
766 1051
767/* sendfile always needs emulation */ 1052 const_iv (O_RDONLY)
768static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1053 const_iv (O_WRONLY)
769{ 1054 const_iv (O_RDWR)
770 ssize_t res; 1055 const_iv (O_CREAT)
1056 const_iv (O_TRUNC)
1057 const_iv (O_EXCL)
1058 const_iv (O_APPEND)
771 1059
772 if (!count) 1060 const_iv (O_ASYNC)
773 return 0; 1061 const_iv (O_DIRECT)
1062 const_iv (O_NOATIME)
774 1063
775#if HAVE_SENDFILE 1064 const_iv (O_CLOEXEC)
776# if __linux 1065 const_iv (O_NOCTTY)
777 res = sendfile (ofd, ifd, &offset, count); 1066 const_iv (O_NOFOLLOW)
1067 const_iv (O_NONBLOCK)
1068 const_iv (O_EXEC)
1069 const_iv (O_SEARCH)
1070 const_iv (O_DIRECTORY)
1071 const_iv (O_DSYNC)
1072 const_iv (O_RSYNC)
1073 const_iv (O_SYNC)
1074 const_iv (O_PATH)
1075 const_iv (O_TMPFILE)
1076 const_iv (O_TTY_INIT)
778 1077
779# elif __freebsd 1078 const_iv (S_IFIFO)
780 /* 1079 const_iv (S_IFCHR)
781 * Of course, the freebsd sendfile is a dire hack with no thoughts 1080 const_iv (S_IFBLK)
782 * wasted on making it similar to other I/O functions. 1081 const_iv (S_IFLNK)
783 */ 1082 const_iv (S_IFREG)
784 { 1083 const_iv (S_IFDIR)
785 off_t sbytes; 1084 const_iv (S_IFWHT)
786 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 1085 const_iv (S_IFSOCK)
1086 const_iv (S_IFMT)
787 1087
788 if (res < 0 && sbytes) 1088 const_iv (ST_RDONLY)
789 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 1089 const_iv (ST_NOSUID)
790 res = sbytes; 1090 const_iv (ST_NODEV)
1091 const_iv (ST_NOEXEC)
1092 const_iv (ST_SYNCHRONOUS)
1093 const_iv (ST_MANDLOCK)
1094 const_iv (ST_WRITE)
1095 const_iv (ST_APPEND)
1096 const_iv (ST_IMMUTABLE)
1097 const_iv (ST_NOATIME)
1098 const_iv (ST_NODIRATIME)
1099 const_iv (ST_RELATIME)
1100
1101 const_iv (PROT_NONE)
1102 const_iv (PROT_EXEC)
1103 const_iv (PROT_READ)
1104 const_iv (PROT_WRITE)
1105
1106 const_iv (MAP_PRIVATE)
1107 const_iv (MAP_SHARED)
1108 const_iv (MAP_FIXED)
1109 const_iv (MAP_ANONYMOUS)
1110
1111 /* linuxish */
1112 const_iv (MAP_LOCKED)
1113 const_iv (MAP_NORESERVE)
1114 const_iv (MAP_POPULATE)
1115 const_iv (MAP_NONBLOCK)
1116 const_iv (MAP_GROWSDOWN)
1117 const_iv (MAP_32BIT)
1118 const_iv (MAP_HUGETLB)
1119 const_iv (MAP_STACK)
1120
1121 const_iv (MREMAP_MAYMOVE)
1122 const_iv (MREMAP_FIXED)
1123
1124 const_iv (F_DUPFD_CLOEXEC)
1125
1126 const_iv (MSG_CMSG_CLOEXEC)
1127 const_iv (SOCK_CLOEXEC)
1128
1129 const_iv (F_OFD_GETLK)
1130 const_iv (F_OFD_SETLK)
1131 const_iv (F_OFD_GETLKW)
1132
1133 const_iv (FIFREEZE)
1134 const_iv (FITHAW)
1135 const_iv (FITRIM)
1136 const_iv (FICLONE)
1137 const_iv (FICLONERANGE)
1138 const_iv (FIDEDUPERANGE)
1139
1140 const_iv (FS_IOC_GETFLAGS)
1141 const_iv (FS_IOC_SETFLAGS)
1142 const_iv (FS_IOC_GETVERSION)
1143 const_iv (FS_IOC_SETVERSION)
1144 const_iv (FS_IOC_FIEMAP)
1145 const_iv (FS_IOC_FSGETXATTR)
1146 const_iv (FS_IOC_FSSETXATTR)
1147 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1148 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1149 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1150
1151 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1152
1153 const_iv (FS_SECRM_FL)
1154 const_iv (FS_UNRM_FL)
1155 const_iv (FS_COMPR_FL)
1156 const_iv (FS_SYNC_FL)
1157 const_iv (FS_IMMUTABLE_FL)
1158 const_iv (FS_APPEND_FL)
1159 const_iv (FS_NODUMP_FL)
1160 const_iv (FS_NOATIME_FL)
1161 const_iv (FS_DIRTY_FL)
1162 const_iv (FS_COMPRBLK_FL)
1163 const_iv (FS_NOCOMP_FL)
1164 const_iv (FS_ENCRYPT_FL)
1165 const_iv (FS_BTREE_FL)
1166 const_iv (FS_INDEX_FL)
1167 const_iv (FS_JOURNAL_DATA_FL)
1168 const_iv (FS_NOTAIL_FL)
1169 const_iv (FS_DIRSYNC_FL)
1170 const_iv (FS_TOPDIR_FL)
1171 const_iv (FS_FL_USER_MODIFIABLE)
1172
1173 const_iv (FS_XFLAG_REALTIME)
1174 const_iv (FS_XFLAG_PREALLOC)
1175 const_iv (FS_XFLAG_IMMUTABLE)
1176 const_iv (FS_XFLAG_APPEND)
1177 const_iv (FS_XFLAG_SYNC)
1178 const_iv (FS_XFLAG_NOATIME)
1179 const_iv (FS_XFLAG_NODUMP)
1180 const_iv (FS_XFLAG_RTINHERIT)
1181 const_iv (FS_XFLAG_PROJINHERIT)
1182 const_iv (FS_XFLAG_NOSYMLINKS)
1183 const_iv (FS_XFLAG_EXTSIZE)
1184 const_iv (FS_XFLAG_EXTSZINHERIT)
1185 const_iv (FS_XFLAG_NODEFRAG)
1186 const_iv (FS_XFLAG_FILESTREAM)
1187 const_iv (FS_XFLAG_DAX)
1188 const_iv (FS_XFLAG_HASATTR)
1189
1190 const_iv (FIEMAP_FLAG_SYNC)
1191 const_iv (FIEMAP_FLAG_XATTR)
1192 const_iv (FIEMAP_FLAGS_COMPAT)
1193 const_iv (FIEMAP_EXTENT_LAST)
1194 const_iv (FIEMAP_EXTENT_UNKNOWN)
1195 const_iv (FIEMAP_EXTENT_DELALLOC)
1196 const_iv (FIEMAP_EXTENT_ENCODED)
1197 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1198 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1199 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1200 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1201 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1202 const_iv (FIEMAP_EXTENT_MERGED)
1203 const_iv (FIEMAP_EXTENT_SHARED)
1204
1205 const_iv (SPLICE_F_MOVE)
1206 const_iv (SPLICE_F_NONBLOCK)
1207 const_iv (SPLICE_F_MORE)
1208 const_iv (SPLICE_F_GIFT)
1209
1210 const_iv (EFD_CLOEXEC)
1211 const_iv (EFD_NONBLOCK)
1212 const_iv (EFD_SEMAPHORE)
1213
1214 const_iv (CLOCK_REALTIME)
1215 const_iv (CLOCK_MONOTONIC)
1216 const_iv (CLOCK_BOOTTIME)
1217 const_iv (CLOCK_REALTIME_ALARM)
1218 const_iv (CLOCK_BOOTTIME_ALARM)
1219
1220 const_iv (TFD_NONBLOCK)
1221 const_iv (TFD_CLOEXEC)
1222
1223 const_iv (TFD_TIMER_ABSTIME)
1224 const_iv (TFD_TIMER_CANCEL_ON_SET)
1225
1226 /* these are libeio constants, and are independent of gendef0 */
1227 const_eio (SEEK_SET)
1228 const_eio (SEEK_CUR)
1229 const_eio (SEEK_END)
1230
1231 const_eio (MCL_FUTURE)
1232 const_eio (MCL_CURRENT)
1233
1234 const_eio (MS_ASYNC)
1235 const_eio (MS_INVALIDATE)
1236 const_eio (MS_SYNC)
1237
1238 const_eio (MT_MODIFY)
1239
1240 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1241 const_eio (SYNC_FILE_RANGE_WRITE)
1242 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1243
1244 const_eio (FALLOC_FL_KEEP_SIZE)
1245 const_eio (FALLOC_FL_PUNCH_HOLE)
1246 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1247 const_eio (FALLOC_FL_ZERO_RANGE)
1248 const_eio (FALLOC_FL_INSERT_RANGE)
1249 const_eio (FALLOC_FL_UNSHARE_RANGE)
1250
1251 const_eio (RENAME_NOREPLACE)
1252 const_eio (RENAME_EXCHANGE)
1253 const_eio (RENAME_WHITEOUT)
1254
1255 const_eio (READDIR_DENTS)
1256 const_eio (READDIR_DIRS_FIRST)
1257 const_eio (READDIR_STAT_ORDER)
1258 const_eio (READDIR_FOUND_UNKNOWN)
1259
1260 const_eio (DT_UNKNOWN)
1261 const_eio (DT_FIFO)
1262 const_eio (DT_CHR)
1263 const_eio (DT_DIR)
1264 const_eio (DT_BLK)
1265 const_eio (DT_REG)
1266 const_eio (DT_LNK)
1267 const_eio (DT_SOCK)
1268 const_eio (DT_WHT)
791 } 1269 };
792 1270
793# elif __hpux 1271 aio_stash = gv_stashpv ("IO::AIO" , 1);
794 res = sendfile (ofd, ifd, offset, count, 0, 0); 1272 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1273 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1274 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
795 1275
796# elif __solaris 1276 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
797 { 1277 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
798 struct sendfilevec vec;
799 size_t sbytes;
800 1278
801 vec.sfv_fd = ifd; 1279 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
802 vec.sfv_flag = 0;
803 vec.sfv_off = offset;
804 vec.sfv_len = count;
805 1280
806 res = sendfilev (ofd, &vec, 1, &sbytes); 1281 reinit ();
1282}
807 1283
808 if (res < 0 && sbytes) 1284void
1285reinit ()
1286 PROTOTYPE:
1287
1288void
1289max_poll_reqs (unsigned int nreqs)
1290 PROTOTYPE: $
1291 CODE:
1292 eio_set_max_poll_reqs (nreqs);
1293
1294void
1295max_poll_time (double nseconds)
1296 PROTOTYPE: $
1297 CODE:
1298 eio_set_max_poll_time (nseconds);
1299
1300void
1301min_parallel (unsigned int nthreads)
1302 PROTOTYPE: $
1303 CODE:
1304 eio_set_min_parallel (nthreads);
1305
1306void
1307max_parallel (unsigned int nthreads)
1308 PROTOTYPE: $
1309 CODE:
1310 eio_set_max_parallel (nthreads);
1311
1312void
1313max_idle (unsigned int nthreads)
1314 PROTOTYPE: $
1315 CODE:
1316 eio_set_max_idle (nthreads);
1317
1318void
1319idle_timeout (unsigned int seconds)
1320 PROTOTYPE: $
1321 CODE:
1322 eio_set_idle_timeout (seconds);
1323
1324void
1325max_outstanding (unsigned int maxreqs)
1326 PROTOTYPE: $
1327 CODE:
1328 max_outstanding = maxreqs;
1329
1330void
1331aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1332 PPCODE:
1333{
1334 dREQ;
1335
1336 req->type = EIO_WD_OPEN;
1337 req_set_path1 (req, pathname);
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1344 PPCODE:
1345{
1346 dREQ;
1347
1348 req->type = EIO_OPEN;
1349 req_set_path1 (req, pathname);
1350 req->int1 = flags;
1351 req->int2 = mode;
1352
1353 REQ_SEND;
1354}
1355
1356void
1357aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1358 ALIAS:
1359 aio_fsync = EIO_FSYNC
1360 aio_fdatasync = EIO_FDATASYNC
1361 aio_syncfs = EIO_SYNCFS
1362 PPCODE:
1363{
1364 int fd = s_fileno_croak (fh, 0);
1365 dREQ;
1366
1367 req->type = ix;
1368 req->sv1 = newSVsv (fh);
1369 req->int1 = fd;
1370
1371 REQ_SEND;
1372}
1373
1374void
1375aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1376 PPCODE:
1377{
1378 int fd = s_fileno_croak (fh, 0);
1379 dREQ;
1380
1381 req->type = EIO_SYNC_FILE_RANGE;
1382 req->sv1 = newSVsv (fh);
1383 req->int1 = fd;
1384 req->offs = offset;
809 res = sbytes; 1385 req->size = nbytes;
810 } 1386 req->int2 = flags;
811 1387
812# endif 1388 REQ_SEND;
1389}
1390
1391void
1392aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1393 PPCODE:
1394{
1395 int fd = s_fileno_croak (fh, 0);
1396 dREQ;
1397
1398 req->type = EIO_FALLOCATE;
1399 req->sv1 = newSVsv (fh);
1400 req->int1 = fd;
1401 req->int2 = mode;
1402 req->offs = offset;
1403 req->size = len;
1404
1405 REQ_SEND;
1406}
1407
1408void
1409aio_close (SV *fh, SV *callback = &PL_sv_undef)
1410 PPCODE:
1411{
1412 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1413 int fd = s_fileno_croak (fh, 0);
1414 dREQ;
1415
1416 if (expect_false (close_fd < 0))
1417 {
1418 int pipefd [2];
1419
1420 if (
1421#ifdef _WIN32
1422 _pipe (pipefd, 1, _O_BINARY) < 0
813#else 1423#else
814 res = -1; 1424 pipe (pipefd) < 0
815 errno = ENOSYS; 1425 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
816#endif 1426#endif
817 1427 || 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 { 1428 )
839 if (cnt && !res) res = -1; 1429 abort (); /*D*/
840 break;
841 }
842 1430
843 cnt = write (ofd, aio_buf, cnt); 1431 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 } 1432 }
914 }
915 1433
916 if (errno) 1434 req->type = EIO_DUP2;
917 res = -1; 1435 req->int1 = close_fd;
918 1436 req->sv2 = newSVsv (fh);
919 req->result = res; 1437 req->int2 = fd;
920}
921 1438
922/*****************************************************************************/ 1439 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} 1440}
1015 1441
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 1442void
1112min_parallel (nthreads) 1443aio_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: 1444 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: $$$;$
1136 PPCODE:
1137{ 1445{
1446 int fd = s_fileno_croak (fh, 0);
1138 dREQ; 1447 dREQ;
1139 1448
1140 req->type = REQ_OPEN; 1449 req->type = EIO_SEEK;
1141 req->data = newSVsv (pathname); 1450 req->sv1 = newSVsv (fh);
1142 req->dataptr = SvPVbyte_nolen (req->data); 1451 req->int1 = fd;
1143 req->fd = flags; 1452 req->offs = SvVAL64 (offset);
1144 req->mode = mode; 1453 req->int2 = whence;
1145 1454
1146 REQ_SEND; 1455 REQ_SEND;
1147} 1456}
1148 1457
1149void 1458void
1150aio_close (fh,callback=&PL_sv_undef) 1459aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1151 SV * fh
1152 SV * callback
1153 PROTOTYPE: $;$
1154 ALIAS: 1460 ALIAS:
1155 aio_close = REQ_CLOSE
1156 aio_fsync = REQ_FSYNC
1157 aio_fdatasync = REQ_FDATASYNC
1158 PPCODE:
1159{
1160 dREQ;
1161
1162 req->type = ix;
1163 req->fh = newSVsv (fh);
1164 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1165
1166 REQ_SEND (req);
1167}
1168
1169void
1170aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1171 SV * fh
1172 UV offset
1173 UV length
1174 SV * data
1175 UV dataoffset
1176 SV * callback
1177 ALIAS:
1178 aio_read = REQ_READ 1461 aio_read = EIO_READ
1179 aio_write = REQ_WRITE 1462 aio_write = EIO_WRITE
1180 PROTOTYPE: $$$$$;$
1181 PPCODE: 1463 PPCODE:
1182{ 1464{
1183 aio_req req;
1184 STRLEN svlen; 1465 STRLEN svlen;
1466 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185 char *svptr = SvPVbyte (data, svlen); 1467 char *svptr = SvPVbyte (data, svlen);
1186 1468 UV len = SvUV (length);
1187 SvUPGRADE (data, SVt_PV);
1188 SvPOK_on (data);
1189 1469
1190 if (dataoffset < 0) 1470 if (dataoffset < 0)
1191 dataoffset += svlen; 1471 dataoffset += svlen;
1192 1472
1193 if (dataoffset < 0 || dataoffset > svlen) 1473 if (dataoffset < 0 || dataoffset > svlen)
1194 croak ("data offset outside of string"); 1474 croak ("dataoffset outside of data scalar");
1195 1475
1196 if (ix == REQ_WRITE) 1476 if (ix == EIO_WRITE)
1197 { 1477 {
1198 /* write: check length and adjust. */ 1478 /* write: check length and adjust. */
1199 if (length < 0 || length + dataoffset > svlen) 1479 if (!SvOK (length) || len + dataoffset > svlen)
1200 length = svlen - dataoffset; 1480 len = svlen - dataoffset;
1201 } 1481 }
1202 else 1482 else
1203 { 1483 {
1204 /* read: grow scalar as necessary */ 1484 /* read: check type and grow scalar as necessary */
1485 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1205 svptr = SvGROW (data, length + dataoffset); 1486 svptr = sv_grow (data, len + dataoffset + 1);
1487 else if (SvCUR (data) < len + dataoffset)
1488 croak ("length + dataoffset outside of scalar, and cannot grow");
1206 } 1489 }
1207
1208 if (length < 0)
1209 croak ("length must not be negative");
1210 1490
1211 { 1491 {
1212 dREQ; 1492 dREQ;
1213 1493
1214 req->type = ix; 1494 req->type = ix;
1215 req->fh = newSVsv (fh); 1495 req->sv1 = newSVsv (fh);
1216 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1496 req->int1 = fd;
1217 : IoOFP (sv_2io (fh))); 1497 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218 req->offset = offset; 1498 req->size = len;
1219 req->length = length;
1220 req->data = SvREFCNT_inc (data); 1499 req->sv2 = SvREFCNT_inc (data);
1221 req->dataptr = (char *)svptr + dataoffset; 1500 req->ptr2 = (char *)svptr + dataoffset;
1501 req->stroffset = dataoffset;
1222 1502
1223 if (!SvREADONLY (data)) 1503 if (!SvREADONLY (data))
1224 { 1504 {
1225 SvREADONLY_on (data); 1505 SvREADONLY_on (data);
1226 req->data2ptr = (void *)data; 1506 req->flags |= FLAG_SV2_RO_OFF;
1227 } 1507 }
1228 1508
1229 REQ_SEND; 1509 REQ_SEND;
1230 } 1510 }
1231} 1511}
1232 1512
1233void 1513void
1234aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1514aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1235 SV * out_fh 1515 ALIAS:
1236 SV * in_fh 1516 aio_ioctl = EIO_IOCTL
1237 UV in_offset 1517 aio_fcntl = EIO_FCNTL
1238 UV length
1239 SV * callback
1240 PROTOTYPE: $$$$;$
1241 PPCODE: 1518 PPCODE:
1242{ 1519{
1243 dREQ; 1520 int fd = s_fileno_croak (fh, 0);
1521 char *svptr;
1244 1522
1245 req->type = REQ_SENDFILE; 1523 if (SvPOK (arg) || !SvNIOK (arg))
1246 req->fh = newSVsv (out_fh);
1247 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1248 req->fh2 = newSVsv (in_fh);
1249 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1250 req->offset = in_offset;
1251 req->length = length;
1252
1253 REQ_SEND;
1254}
1255
1256void
1257aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1258 SV * fh
1259 UV offset
1260 IV length
1261 SV * callback
1262 PROTOTYPE: $$$;$
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 { 1524 {
1290 req_free (req); 1525 STRLEN svlen;
1291 croak ("out of memory during aio_req->statdata allocation"); 1526 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1292 } 1527#ifdef IOCPARM_LEN
1528 STRLEN need = IOCPARM_LEN (request);
1529#else
1530 STRLEN need = 256;
1531#endif
1293 1532
1294 if (SvPOK (fh_or_path)) 1533 if (svlen < need)
1295 { 1534 svptr = SvGROW (arg, need);
1296 req->type = ix;
1297 req->data = newSVsv (fh_or_path);
1298 req->dataptr = SvPVbyte_nolen (req->data);
1299 } 1535 }
1300 else 1536 else
1537 svptr = (char *)SvIV (arg);
1538
1301 { 1539 {
1540 dREQ;
1541
1302 req->type = REQ_FSTAT; 1542 req->type = ix;
1303 req->fh = newSVsv (fh_or_path); 1543 req->sv1 = newSVsv (fh);
1304 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1544 req->int1 = fd;
1545 req->int2 = (long)request;
1546 req->sv2 = SvREFCNT_inc (arg);
1547 req->ptr2 = svptr;
1548
1549 REQ_SEND;
1305 } 1550 }
1551}
1552
1553void
1554aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1555 ALIAS:
1556 aio_readlink = EIO_READLINK
1557 aio_realpath = EIO_REALPATH
1558 PPCODE:
1559{
1560 dREQ;
1561
1562 req->type = ix;
1563 req_set_path1 (req, pathname);
1306 1564
1307 REQ_SEND; 1565 REQ_SEND;
1308} 1566}
1309 1567
1310void 1568void
1311aio_unlink (pathname,callback=&PL_sv_undef) 1569aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1312 SV * pathname 1570 PPCODE:
1313 SV * callback 1571{
1572 int ifd = s_fileno_croak (in_fh , 0);
1573 int ofd = s_fileno_croak (out_fh, 1);
1574 dREQ;
1575
1576 req->type = EIO_SENDFILE;
1577 req->sv1 = newSVsv (out_fh);
1578 req->int1 = ofd;
1579 req->sv2 = newSVsv (in_fh);
1580 req->int2 = ifd;
1581 req->offs = in_offset;
1582 req->size = length;
1583
1584 REQ_SEND;
1585}
1586
1587void
1588aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1589 PPCODE:
1590{
1591 int fd = s_fileno_croak (fh, 0);
1592 dREQ;
1593
1594 req->type = EIO_READAHEAD;
1595 req->sv1 = newSVsv (fh);
1596 req->int1 = fd;
1597 req->offs = offset;
1598 req->size = length;
1599
1600 REQ_SEND;
1601}
1602
1603void
1604aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1314 ALIAS: 1605 ALIAS:
1606 aio_stat = EIO_STAT
1607 aio_lstat = EIO_LSTAT
1608 aio_statvfs = EIO_STATVFS
1609 PPCODE:
1610{
1611 dREQ;
1612
1613 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1614
1615 REQ_SEND;
1616}
1617
1618UV
1619major (UV dev)
1620 ALIAS:
1621 minor = 1
1622 CODE:
1623 RETVAL = ix ? minor (dev) : major (dev);
1624 OUTPUT:
1625 RETVAL
1626
1627UV
1628makedev (UV maj, UV min)
1629 CODE:
1630 RETVAL = makedev (maj, min);
1631 OUTPUT:
1632 RETVAL
1633
1634void
1635aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1636 PPCODE:
1637{
1638 dREQ;
1639
1640 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1641 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1642 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1649 PPCODE:
1650{
1651 dREQ;
1652
1653 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1654 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1655
1656 REQ_SEND;
1657}
1658
1659void
1660aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1661 PPCODE:
1662{
1663 dREQ;
1664
1665 req->int2 = mode;
1666 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1667
1668 REQ_SEND;
1669}
1670
1671void
1672aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1673 PPCODE:
1674{
1675 dREQ;
1676
1677 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1678 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1679 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1680
1681 REQ_SEND;
1682}
1683
1684void
1685aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1686 PPCODE:
1687{
1688 dREQ;
1689
1690 req->type = EIO_READDIR;
1691 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1692
1693 if (flags & EIO_READDIR_DENTS)
1694 req->int1 |= EIO_READDIR_CUSTOM2;
1695
1696 req_set_path1 (req, pathname);
1697
1698 REQ_SEND;
1699}
1700
1701void
1702aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1703 PPCODE:
1704{
1705 dREQ;
1706
1707 req->type = EIO_MKDIR;
1708 req->int2 = mode;
1709 req_set_path1 (req, pathname);
1710
1711 REQ_SEND;
1712}
1713
1714void
1715aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1716 ALIAS:
1315 aio_unlink = REQ_UNLINK 1717 aio_unlink = EIO_UNLINK
1316 aio_rmdir = REQ_RMDIR 1718 aio_rmdir = EIO_RMDIR
1317 aio_readdir = REQ_READDIR 1719 aio_readdir = EIO_READDIR
1318 PPCODE: 1720 PPCODE:
1319{ 1721{
1320 dREQ; 1722 dREQ;
1321 1723
1322 req->type = ix; 1724 req->type = ix;
1323 req->data = newSVsv (pathname); 1725 req_set_path1 (req, pathname);
1324 req->dataptr = SvPVbyte_nolen (req->data); 1726
1325
1326 REQ_SEND; 1727 REQ_SEND;
1327} 1728}
1328 1729
1329void 1730void
1330aio_link (oldpath,newpath,callback=&PL_sv_undef) 1731aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1331 SV * oldpath
1332 SV * newpath
1333 SV * callback
1334 ALIAS: 1732 ALIAS:
1335 aio_link = REQ_LINK 1733 aio_link = EIO_LINK
1336 aio_symlink = REQ_SYMLINK 1734 aio_symlink = EIO_SYMLINK
1337 aio_rename = REQ_RENAME 1735 aio_rename = EIO_RENAME
1338 PPCODE: 1736 PPCODE:
1339{ 1737{
1738 eio_wd wd2 = 0;
1340 dREQ; 1739 dREQ;
1341 1740
1342 req->type = ix; 1741 req->type = ix;
1343 req->fh = newSVsv (oldpath); 1742 req_set_path1 (req, oldpath);
1344 req->data2ptr = SvPVbyte_nolen (req->fh); 1743 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1345 req->data = newSVsv (newpath); 1744 req->int3 = (long)wd2;
1346 req->dataptr = SvPVbyte_nolen (req->data);
1347 1745
1348 REQ_SEND; 1746 REQ_SEND;
1349} 1747}
1350 1748
1351void 1749void
1352aio_busy (delay,callback=&PL_sv_undef) 1750aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1353 double delay
1354 SV * callback
1355 PPCODE: 1751 PPCODE:
1356{ 1752{
1753 eio_wd wd2 = 0;
1357 dREQ; 1754 dREQ;
1358 1755
1359 req->type = REQ_BUSY; 1756 req->type = EIO_RENAME;
1360 req->fd = delay < 0. ? 0 : delay; 1757 req_set_path1 (req, oldpath);
1361 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1758 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1362 1759 req->int2 = flags;
1760 req->int3 = (long)wd2;
1761
1363 REQ_SEND; 1762 REQ_SEND;
1364} 1763}
1365 1764
1366void 1765void
1367aio_group (callback=&PL_sv_undef) 1766aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1368 SV * callback 1767 PPCODE:
1369 PROTOTYPE: ;$ 1768{
1769 dREQ;
1770
1771 req->type = EIO_MKNOD;
1772 req->int2 = (mode_t)mode;
1773 req->offs = dev;
1774 req_set_path1 (req, pathname);
1775
1776 REQ_SEND;
1777}
1778
1779void
1780aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1781 ALIAS:
1782 aio_mtouch = EIO_MTOUCH
1783 aio_msync = EIO_MSYNC
1370 PPCODE: 1784 PPCODE:
1371{ 1785{
1786 STRLEN svlen;
1787 char *svptr = SvPVbyte (data, svlen);
1788 UV len = SvUV (length);
1789
1790 if (flags < 0)
1791 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1792
1793 if (offset < 0)
1794 offset += svlen;
1795
1796 if (offset < 0 || offset > svlen)
1797 croak ("offset outside of scalar");
1798
1799 if (!SvOK (length) || len + offset > svlen)
1800 len = svlen - offset;
1801
1802 {
1803 dREQ;
1804
1805 req->type = ix;
1806 req->sv2 = SvREFCNT_inc (data);
1807 req->ptr2 = (char *)svptr + offset;
1808 req->size = len;
1809 req->int1 = flags;
1810
1811 REQ_SEND;
1812 }
1813}
1814
1815void
1816aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1817 PPCODE:
1818{
1819 STRLEN svlen;
1820 char *svptr = SvPVbyte (data, svlen);
1821 UV len = SvUV (length);
1822
1823 if (offset < 0)
1824 offset += svlen;
1825
1826 if (offset < 0 || offset > svlen)
1827 croak ("offset outside of scalar");
1828
1829 if (!SvOK (length) || len + offset > svlen)
1830 len = svlen - offset;
1831
1832 {
1833 dREQ;
1834
1835 req->type = EIO_MLOCK;
1836 req->sv2 = SvREFCNT_inc (data);
1837 req->ptr2 = (char *)svptr + offset;
1838 req->size = len;
1839
1840 REQ_SEND;
1841 }
1842}
1843
1844void
1845aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1846 PPCODE:
1847{
1848 dREQ;
1849
1850 req->type = EIO_MLOCKALL;
1851 req->int1 = flags;
1852
1853 REQ_SEND;
1854}
1855
1856void
1857aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1858 PPCODE:
1859{
1860 int fd = s_fileno_croak (fh, 0);
1372 dREQ; 1861 dREQ;
1373 1862
1374 req->type = REQ_GROUP; 1863 req->type = EIO_CUSTOM;
1375 req_send (req); 1864 req->sv1 = newSVsv (fh);
1865 req->int1 = fd;
1376 1866
1377 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1867 req->feed = fiemap;
1378} 1868#if HAVE_FIEMAP
1869 /* keep our fingers crossed that the next two types are 64 bit */
1870 req->offs = start;
1871 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1872 req->int2 = flags;
1873 req->int3 = SvOK (count) ? SvIV (count) : -1;
1874#endif
1379 1875
1876 REQ_SEND;
1877}
1878
1380void 1879void
1381aio_nop (callback=&PL_sv_undef) 1880aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1382 SV * callback 1881 PPCODE:
1882{
1883 char *svptr = 0;
1884
1885 sv_clear_foreign (data);
1886
1887 if (length) /* known length, directly read into scalar */
1888 {
1889 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1890 svptr = sv_grow (data, length + 1);
1891 else if (SvCUR (data) < length)
1892 croak ("length outside of scalar, and cannot grow");
1893 else
1894 svptr = SvPVbyte_nolen (data);
1895 }
1896
1897 {
1898 dREQ;
1899
1900 req->type = EIO_SLURP;
1901 req_set_path1 (req, pathname);
1902 req->offs = offset;
1903 req->size = length;
1904 req->sv2 = SvREFCNT_inc (data);
1905 req->ptr2 = svptr;
1906
1907 if (!SvREADONLY (data))
1908 {
1909 SvREADONLY_on (data);
1910 req->flags |= FLAG_SV2_RO_OFF;
1911 }
1912
1913 REQ_SEND;
1914 }
1915}
1916
1917void
1918aio_busy (double delay, SV *callback = &PL_sv_undef)
1383 PPCODE: 1919 PPCODE:
1384{ 1920{
1385 dREQ; 1921 dREQ;
1386 1922
1387 req->type = REQ_NOP; 1923 req->type = EIO_BUSY;
1924 req->nv1 = delay < 0. ? 0. : delay;
1388 1925
1389 REQ_SEND; 1926 REQ_SEND;
1390} 1927}
1391 1928
1392void 1929void
1393aioreq_pri (int pri = DEFAULT_PRI) 1930aio_group (SV *callback = &PL_sv_undef)
1394 CODE: 1931 PPCODE:
1932{
1933 dREQ;
1934
1935 req->type = EIO_GROUP;
1936
1937 PUTBACK;
1938 req_submit (req);
1939 SPAGAIN;
1940
1941 XPUSHs (req_sv (req, aio_grp_stash));
1942}
1943
1944void
1945aio_nop (SV *callback = &PL_sv_undef)
1946 ALIAS:
1947 aio_nop = EIO_NOP
1948 aio_sync = EIO_SYNC
1949 PPCODE:
1950{
1951 dREQ;
1952
1953 req->type = ix;
1954
1955 REQ_SEND;
1956}
1957
1958int
1959aioreq_pri (int pri = NO_INIT)
1960 CODE:
1961 RETVAL = next_pri;
1962 if (items > 0)
1963 {
1395 if (pri < PRI_MIN) pri = PRI_MIN; 1964 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396 if (pri > PRI_MAX) pri = PRI_MAX; 1965 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397 next_pri = pri + PRI_BIAS; 1966 next_pri = pri;
1967 }
1968 OUTPUT:
1969 RETVAL
1398 1970
1399void 1971void
1400aioreq_nice (int nice = 0) 1972aioreq_nice (int nice = 0)
1401 CODE: 1973 CODE:
1402 nice = next_pri - nice; 1974 nice = next_pri - nice;
1403 if (nice < PRI_MIN) nice = PRI_MIN; 1975 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404 if (nice > PRI_MAX) nice = PRI_MAX; 1976 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405 next_pri = nice + PRI_BIAS; 1977 next_pri = nice;
1406 1978
1407void 1979void
1408flush () 1980flush ()
1409 PROTOTYPE:
1410 CODE: 1981 CODE:
1411 while (nreqs) 1982 while (eio_nreqs ())
1412 { 1983 {
1413 poll_wait (); 1984 poll_wait ();
1414 poll_cb (); 1985 poll_cb ();
1415 } 1986 }
1416 1987
1417void 1988int
1418poll() 1989poll ()
1419 PROTOTYPE:
1420 CODE: 1990 CODE:
1421 if (nreqs)
1422 {
1423 poll_wait (); 1991 poll_wait ();
1424 poll_cb (); 1992 RETVAL = poll_cb ();
1425 }
1426
1427int
1428poll_fileno()
1429 PROTOTYPE:
1430 CODE:
1431 RETVAL = respipe [0];
1432 OUTPUT: 1993 OUTPUT:
1433 RETVAL 1994 RETVAL
1434 1995
1435int 1996int
1997poll_fileno ()
1998 CODE:
1999 RETVAL = s_epipe_fd (&respipe);
2000 OUTPUT:
2001 RETVAL
2002
2003int
1436poll_cb(...) 2004poll_cb (...)
1437 PROTOTYPE: 2005 PROTOTYPE:
1438 CODE: 2006 CODE:
1439 RETVAL = poll_cb (); 2007 RETVAL = poll_cb ();
1440 OUTPUT: 2008 OUTPUT:
1441 RETVAL 2009 RETVAL
1442 2010
1443void 2011void
1444poll_wait() 2012poll_wait ()
1445 PROTOTYPE:
1446 CODE: 2013 CODE:
1447 if (nreqs)
1448 poll_wait (); 2014 poll_wait ();
1449 2015
1450int 2016int
1451nreqs() 2017nreqs ()
1452 PROTOTYPE:
1453 CODE: 2018 CODE:
1454 RETVAL = nreqs; 2019 RETVAL = eio_nreqs ();
1455 OUTPUT: 2020 OUTPUT:
1456 RETVAL 2021 RETVAL
1457 2022
2023int
2024nready ()
2025 CODE:
2026 RETVAL = eio_nready ();
2027 OUTPUT:
2028 RETVAL
2029
2030int
2031npending ()
2032 CODE:
2033 RETVAL = eio_npending ();
2034 OUTPUT:
2035 RETVAL
2036
2037int
2038nthreads ()
2039 CODE:
2040 RETVAL = eio_nthreads ();
2041 OUTPUT:
2042 RETVAL
2043
2044int
2045fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2046 CODE:
2047 RETVAL = posix_fadvise (fh, offset, length, advice);
2048 OUTPUT:
2049 RETVAL
2050
2051IV
2052sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2053 CODE:
2054 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2055 OUTPUT:
2056 RETVAL
2057
2058void
2059mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2060 PPCODE:
2061 sv_clear_foreign (scalar);
2062{
2063 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2064 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2065 if (addr == (void *)-1)
2066 XSRETURN_NO;
2067
2068 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2069
2070 if (!(prot & PROT_WRITE))
2071 SvREADONLY_on (scalar);
2072
2073 XSRETURN_YES;
2074}
2075
2076void
2077munmap (SV *scalar)
2078 CODE:
2079 sv_clear_foreign (scalar);
2080
2081SV *
2082mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2083 CODE:
2084{
2085 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2086 void *new;
2087
2088 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2089 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2090
2091 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2092
2093 RETVAL = &PL_sv_no;
2094
2095 if (new != (void *)-1)
2096 {
2097 RETVAL = new == (void *)mg->mg_ptr
2098 ? newSVpvn ("0 but true", 10)
2099 : &PL_sv_yes;
2100
2101 mg->mg_ptr = (char *)new;
2102 mg->mg_obj = (SV *)new_length;
2103
2104 SvPVX (scalar) = mg->mg_ptr;
2105 SvCUR_set (scalar, new_length);
2106 }
2107}
2108 OUTPUT:
2109 RETVAL
2110
2111int
2112madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2113 ALIAS:
2114 mprotect = 1
2115 CODE:
2116{
2117 STRLEN svlen;
2118 void *addr = SvPVbyte (scalar, svlen);
2119 STRLEN len = SvUV (length);
2120
2121 if (offset < 0)
2122 offset += svlen;
2123
2124 if (offset < 0 || offset > svlen)
2125 croak ("offset outside of scalar");
2126
2127 if (!SvOK (length) || len + offset > svlen)
2128 len = svlen - offset;
2129
2130 addr = (void *)(((intptr_t)addr) + offset);
2131 eio_page_align (&addr, &len);
2132
2133 switch (ix)
2134 {
2135 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2136 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2137 }
2138}
2139 OUTPUT:
2140 RETVAL
2141
2142int
2143munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2144 CODE:
2145{
2146 STRLEN svlen;
2147 void *addr = SvPVbyte (scalar, svlen);
2148 size_t len = SvUV (length);
2149
2150 if (offset < 0)
2151 offset += svlen;
2152
2153 if (offset < 0 || offset > svlen)
2154 croak ("offset outside of scalar");
2155
2156 if (!SvOK (length) || len + offset > svlen)
2157 len = svlen - offset;
2158
2159 addr = (void *)(((intptr_t)addr) + offset);
2160 eio_page_align (&addr, &len);
2161#if _POSIX_MEMLOCK_RANGE
2162 RETVAL = munlock (addr, len);
2163#else
2164 RETVAL = EIO_ENOSYS ();
2165#endif
2166}
2167 OUTPUT:
2168 RETVAL
2169
2170int
2171munlockall ()
2172 CODE:
2173#if _POSIX_MEMLOCK
2174 munlockall ();
2175#else
2176 RETVAL = EIO_ENOSYS ();
2177#endif
2178 OUTPUT:
2179 RETVAL
2180
2181int
2182splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2183 CODE:
2184{
2185#if HAVE_LINUX_SPLICE
2186 loff_t off_in_, off_out_;
2187 RETVAL = splice (
2188 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2189 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2190 length, flags
2191 );
2192#else
2193 RETVAL = EIO_ENOSYS ();
2194#endif
2195}
2196 OUTPUT:
2197 RETVAL
2198
2199int
2200tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2201 CODE:
2202#if HAVE_LINUX_SPLICE
2203 RETVAL = tee (rfh, wfh, length, flags);
2204#else
2205 RETVAL = EIO_ENOSYS ();
2206#endif
2207 OUTPUT:
2208 RETVAL
2209
2210int
2211pipesize (aio_rfd rfh, int new_size = -1)
2212 PROTOTYPE: $;$
2213 CODE:
2214#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2215 if (new_size >= 0)
2216 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2217 else
2218 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2219#else
2220 errno = ENOSYS;
2221 RETVAL = -1;
2222#endif
2223 OUTPUT:
2224 RETVAL
2225
2226void
2227pipe2 (int flags = 0)
2228 PROTOTYPE: ;$
2229 PPCODE:
2230{
2231 int fd[2];
2232 int res;
2233
2234 if (flags)
2235#if HAVE_PIPE2
2236 res = pipe2 (fd, flags);
2237#else
2238 res = (errno = ENOSYS, -1);
2239#endif
2240 else
2241 res = pipe (fd);
2242
2243 if (!res)
2244 {
2245 EXTEND (SP, 2);
2246 PUSHs (newmortalFH (fd[0], O_RDONLY));
2247 PUSHs (newmortalFH (fd[1], O_WRONLY));
2248 }
2249}
2250
2251void
2252eventfd (unsigned int initval = 0, int flags = 0)
2253 PPCODE:
2254{
2255 int fd;
2256#if HAVE_EVENTFD
2257 fd = eventfd (initval, flags);
2258#else
2259 fd = (errno = ENOSYS, -1);
2260#endif
2261
2262 XPUSHs (newmortalFH (fd, O_RDWR));
2263}
2264
2265void
2266timerfd_create (int clockid, int flags = 0)
2267 PPCODE:
2268{
2269 int fd;
2270#if HAVE_TIMERFD
2271 fd = timerfd_create (clockid, flags);
2272#else
2273 fd = (errno = ENOSYS, -1);
2274#endif
2275
2276 XPUSHs (newmortalFH (fd, O_RDWR));
2277}
2278
2279void
2280timerfd_settime (SV *fh, int flags, NV interval, NV value)
2281 PPCODE:
2282{
2283 int fd = s_fileno_croak (fh, 0);
2284#if HAVE_TIMERFD
2285 int res;
2286 struct itimerspec its, ots;
2287
2288 ts_set (&its.it_interval, interval);
2289 ts_set (&its.it_value , value);
2290 res = timerfd_settime (fd, flags, &its, &ots);
2291
2292 if (!res)
2293 {
2294 EXTEND (SP, 2);
2295 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2296 PUSHs (newSVnv (ts_get (&ots.it_value)));
2297 }
2298#else
2299 errno = ENOSYS;
2300#endif
2301}
2302
2303void
2304timerfd_gettime (SV *fh)
2305 PPCODE:
2306{
2307 int fd = s_fileno_croak (fh, 0);
2308#if HAVE_TIMERFD
2309 int res;
2310 struct itimerspec ots;
2311 res = timerfd_gettime (fd, &ots);
2312
2313 if (!res)
2314 {
2315 EXTEND (SP, 2);
2316 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2317 PUSHs (newSVnv (ts_get (&ots.it_value)));
2318 }
2319#else
2320 errno = ENOSYS;
2321#endif
2322}
2323
2324UV
2325get_fdlimit ()
2326 CODE:
2327#if HAVE_RLIMITS
2328 struct rlimit rl;
2329 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2330 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2331#endif
2332 XSRETURN_UNDEF;
2333 OUTPUT:
2334 RETVAL
2335
2336void
2337min_fdlimit (UV limit = 0x7fffffffU)
2338 CODE:
2339{
2340#if HAVE_RLIMITS
2341 struct rlimit rl;
2342 rlim_t orig_rlim_max;
2343 UV bit;
2344
2345 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2346 goto fail;
2347
2348 if (rl.rlim_cur == RLIM_INFINITY)
2349 XSRETURN_YES;
2350
2351 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2352
2353 if (rl.rlim_cur < limit)
2354 {
2355 rl.rlim_cur = limit;
2356
2357 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2358 rl.rlim_max = rl.rlim_cur;
2359 }
2360
2361 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2362 XSRETURN_YES;
2363
2364 if (errno == EPERM)
2365 {
2366 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2367 /* our limit overflows a system-wide limit */
2368 /* try an adaptive algorithm, but do not lower the hardlimit */
2369 rl.rlim_max = 0;
2370 for (bit = 0x40000000U; bit; bit >>= 1)
2371 {
2372 rl.rlim_max |= bit;
2373 rl.rlim_cur = rl.rlim_max;
2374
2375 /* nevr decrease the hard limit */
2376 if (rl.rlim_max < orig_rlim_max)
2377 break;
2378
2379 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2380 rl.rlim_max &= ~bit; /* too high, remove bit again */
2381 }
2382
2383 /* now, raise the soft limit to the max permitted */
2384 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2385 {
2386 rl.rlim_cur = rl.rlim_max;
2387 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2388 errno = EPERM;
2389 }
2390 }
2391#endif
2392 fail:
2393 XSRETURN_UNDEF;
2394}
2395
2396void _on_next_submit (SV *cb)
2397 CODE:
2398 SvREFCNT_dec (on_next_submit);
2399 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2400
1458PROTOTYPES: DISABLE 2401PROTOTYPES: DISABLE
2402
2403MODULE = IO::AIO PACKAGE = IO::AIO::WD
2404
2405BOOT:
2406{
2407 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2408 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2409}
2410
2411void
2412DESTROY (SV *self)
2413 CODE:
2414{
2415 aio_wd wd = SvAIO_WD (self);
2416#if HAVE_AT
2417 {
2418 SV *callback = &PL_sv_undef;
2419 dREQ; /* clobbers next_pri :/ */
2420 next_pri = req->pri; /* restore next_pri */
2421 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2422 req->type = EIO_WD_CLOSE;
2423 req->wd = wd;
2424 REQ_SEND;
2425 }
2426#else
2427 eio_wd_close_sync (wd);
2428#endif
2429}
1459 2430
1460MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2431MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461 2432
1462void 2433void
1463cancel (aio_req_ornot req) 2434cancel (aio_req_ornot req)
1464 CODE: 2435 CODE:
1465 req_cancel (req); 2436 eio_cancel (req);
1466 2437
1467void 2438void
1468cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2439cb (aio_req_ornot req, SV *callback = NO_INIT)
1469 CODE: 2440 PPCODE:
2441{
2442 if (GIMME_V != G_VOID)
2443 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2444
2445 if (items > 1)
2446 {
2447 SV *cb_cv = get_cb (callback);
2448
1470 SvREFCNT_dec (req->callback); 2449 SvREFCNT_dec (req->callback);
1471 req->callback = newSVsv (callback); 2450 req->callback = SvREFCNT_inc (cb_cv);
2451 }
2452}
1472 2453
1473MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2454MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474 2455
1475void 2456void
1476add (aio_req grp, ...) 2457add (aio_req grp, ...)
1477 PPCODE: 2458 PPCODE:
1478{ 2459{
1479 int i; 2460 int i;
1480 aio_req req;
1481 2461
1482 if (grp->fd == 2) 2462 if (grp->int1 == 2)
1483 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2463 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484 2464
1485 for (i = 1; i < items; ++i ) 2465 for (i = 1; i < items; ++i )
1486 { 2466 {
2467 aio_req req;
2468
1487 if (GIMME_V != G_VOID) 2469 if (GIMME_V != G_VOID)
1488 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2470 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489 2471
1490 req = SvAIO_REQ (ST (i)); 2472 req = SvAIO_REQ (ST (i));
1491 2473
1492 if (req) 2474 if (req)
1493 { 2475 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 } 2476 }
1506} 2477}
1507 2478
1508void 2479void
1509cancel_subs (aio_req_ornot req) 2480cancel_subs (aio_req_ornot req)
… …
1513void 2484void
1514result (aio_req grp, ...) 2485result (aio_req grp, ...)
1515 CODE: 2486 CODE:
1516{ 2487{
1517 int i; 2488 int i;
2489 AV *av;
2490
2491 grp->errorno = errno;
2492
1518 AV *av = newAV (); 2493 av = newAV ();
2494 av_extend (av, items - 1);
1519 2495
1520 for (i = 1; i < items; ++i ) 2496 for (i = 1; i < items; ++i )
1521 av_push (av, newSVsv (ST (i))); 2497 av_push (av, newSVsv (ST (i)));
1522 2498
1523 SvREFCNT_dec (grp->data); 2499 SvREFCNT_dec (grp->sv1);
1524 grp->data = (SV *)av; 2500 grp->sv1 = (SV *)av;
1525} 2501}
2502
2503void
2504errno (aio_req grp, int errorno = errno)
2505 CODE:
2506 grp->errorno = errorno;
1526 2507
1527void 2508void
1528limit (aio_req grp, int limit) 2509limit (aio_req grp, int limit)
1529 CODE: 2510 CODE:
1530 grp->fd2 = limit; 2511 eio_grp_limit (grp, limit);
1531 aio_grp_feed (grp);
1532 2512
1533void 2513void
1534feed (aio_req grp, SV *callback=&PL_sv_undef) 2514feed (aio_req grp, SV *callback = &PL_sv_undef)
1535 CODE: 2515 CODE:
1536{ 2516{
1537 SvREFCNT_dec (grp->fh2); 2517 SvREFCNT_dec (grp->sv2);
1538 grp->fh2 = newSVsv (callback); 2518 grp->sv2 = newSVsv (callback);
2519 grp->feed = aio_grp_feed;
1539 2520
1540 if (grp->fd2 <= 0) 2521 if (grp->int2 <= 0)
1541 grp->fd2 = 2; 2522 grp->int2 = 2;
1542 2523
1543 aio_grp_feed (grp); 2524 eio_grp_limit (grp, grp->int2);
1544} 2525}
1545 2526

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