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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.255 by root, Tue Feb 20 06:05:19 2018 UTC

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

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