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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.169 by root, Wed Aug 4 16:06:54 2010 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
16#include <sys/statvfs.h>
27#include <limits.h> 17#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 18#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 19#include <sched.h>
32 20
33#if HAVE_SENDFILE 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
34# if __linux
35# include <sys/sendfile.h> 22# include <sys/mman.h>
36# elif __freebsd 23#endif
37# include <sys/socket.h> 24
25/* perl namespace pollution */
26#undef VERSION
27
28#ifdef _WIN32
29
30# define EIO_STRUCT_DIRENT Direntry_t
31# undef malloc
32# undef free
33
34// perl overrides all those nice win32 functions
35# undef open
36# undef read
37# undef write
38# undef send
39# undef recv
40# undef stat
41# undef fstat
42# define lstat stat
43# undef truncate
44# undef ftruncate
45# undef open
46# undef close
47# undef unlink
48# undef rmdir
49# undef rename
50# undef lseek
51
52# define chown(a,b,c) (errno = ENOSYS, -1)
53# define fchown(a,b,c) (errno = ENOSYS, -1)
54# define fchmod(a,b) (errno = ENOSYS, -1)
55# define symlink(a,b) (errno = ENOSYS, -1)
56# define readlink(a,b,c) (errno = ENOSYS, -1)
57# define mknod(a,b,c) (errno = ENOSYS, -1)
58# define truncate(a,b) (errno = ENOSYS, -1)
59# define ftruncate(fd,o) chsize ((fd), (o))
60# define fsync(fd) _commit (fd)
61# define opendir(fd) (errno = ENOSYS, 0)
62# define readdir(fd) (errno = ENOSYS, -1)
63# define closedir(fd) (errno = ENOSYS, -1)
64# define mkdir(a,b) mkdir (a)
65
66#else
67
38# include <sys/uio.h> 68# include <sys/time.h>
39# elif __hpux
40# include <sys/socket.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 69# include <sys/select.h>
70# include <unistd.h>
71# include <utime.h>
72# include <signal.h>
73# define EIO_STRUCT_DIRENT struct dirent
74
75#endif
76
77/* perl stupidly overrides readdir and maybe others */
78/* with thread-unsafe versions, imagine that :( */
79#undef readdir
80#undef opendir
81#undef closedir
82
83#define EIO_STRUCT_STAT Stat_t
84
85/* use NV for 32 bit perls as it allows larger offsets */
86#if IVSIZE >= 8
87# define VAL64 IV
88# define SvVAL64 SvIV
89# define newSVval64 newSViv
90#else
91# define VAL64 NV
92# define SvVAL64 SvNV
93# define newSVval64 newSVnv
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/eio.h"
124
125#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0
127# define NO_FADVISE 1
128#endif
129#ifndef POSIX_FADV_SEQUENTIAL
130# define POSIX_FADV_SEQUENTIAL 0
131#endif
132#ifndef POSIX_FADV_RANDOM
133# define POSIX_FADV_RANDOM 0
134#endif
135#ifndef POSIX_FADV_NOREUSE
136# define POSIX_FADV_NOREUSE 0
137#endif
138#ifndef POSIX_FADV_WILLNEED
139# define POSIX_FADV_WILLNEED 0
140#endif
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145#ifndef POSIX_MADV_NORMAL
146# define POSIX_MADV_NORMAL 0
147# define NO_MADVISE 1
148#endif
149#ifndef POSIX_MADV_SEQUENTIAL
150# define POSIX_MADV_SEQUENTIAL 0
151#endif
152#ifndef POSIX_MADV_RANDOM
153# define POSIX_MADV_RANDOM 0
154#endif
155#ifndef POSIX_MADV_WILLNEED
156# define POSIX_MADV_WILLNEED 0
157#endif
158#ifndef POSIX_MADV_DONTNEED
159# define POSIX_MADV_DONTNEED 0
160#endif
161
162#ifndef ST_NODEV
163# define ST_NODEV 0
164#endif
165#ifndef ST_NOEXEC
166# define ST_NOEXEC 0
167#endif
168#ifndef ST_SYNCHRONOUS
169# define ST_SYNCHRONOUS 0
170#endif
171#ifndef ST_MANDLOCK
172# define ST_MANDLOCK 0
173#endif
174#ifndef ST_WRITE
175# define ST_WRITE 0
176#endif
177#ifndef ST_APPEND
178# define ST_APPEND 0
179#endif
180#ifndef ST_IMMUTABLE
181# define ST_IMMUTABLE 0
182#endif
183#ifndef ST_NOATIME
184# define ST_NOATIME 0
185#endif
186#ifndef ST_NODIRATIME
187# define ST_NODIRATIME 0
188#endif
189#ifndef ST_RELATIME
190# define ST_RELATIME 0
191#endif
192
193#ifndef MCL_CURRENT
194# define MCL_CURRENT 0
195#endif
196#ifndef MCL_FUTURE
197# define MCL_FUTURE 0
198#endif
199
200#ifndef MAP_ANONYMOUS
201# ifdef MAP_ANON
202# define MAP_ANONYMOUS MAP_ANON
43# else 203# else
44# error sendfile support requested but not available 204# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 205# endif
46#endif 206#endif
47 207#ifndef MAP_HUGETLB
48/* number of seconds after which idle threads exit */ 208# define MAP_HUGETLB 0
49#define IDLE_TIMEOUT 10
50
51/* used for struct dirent, AIX doesn't provide it */
52#ifndef NAME_MAX
53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif 209#endif
210#ifndef MAP_LOCKED
211# define MAP_LOCKED 0
79#endif 212#endif
213#ifndef MAP_NORESERVE
214# define MAP_NORESERVE 0
215#endif
216#ifndef MAP_POPULATE
217# define MAP_POPULATE 0
218#endif
219#ifndef MAP_NONBLOCK
220# define MAP_NONBLOCK 0
221#endif
80 222
81/* buffer size for various temporary buffers */ 223#ifndef PAGESIZE
82#define AIO_BUFSIZE 65536 224# define PAGESIZE sysconf (_SC_PAGESIZE)
225#endif
83 226
84#define dBUF \ 227static int req_invoke (eio_req *req);
85 char *aio_buf; \ 228#define EIO_FINISH(req) req_invoke (req)
86 LOCK (wrklock); \ 229static void req_destroy (eio_req *grp);
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 230#define EIO_DESTROY(req) req_destroy (req)
88 UNLOCK (wrklock); \
89 if (!aio_buf) \
90 return -1;
91 231
92enum { 232enum {
93 REQ_QUIT, 233 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104}; 234};
105 235
106#define AIO_REQ_KLASS "IO::AIO::REQ" 236#include "libeio/eio.c"
107#define AIO_GRP_KLASS "IO::AIO::GRP"
108 237
109typedef struct aio_cb
110{
111 struct aio_cb *volatile next;
112
113 SV *callback, *fh;
114 SV *sv1, *sv2;
115 void *ptr1, *ptr2;
116 Stat_t *statdata;
117 off_t offs;
118 size_t size;
119 ssize_t result;
120
121 STRLEN stroffset;
122 int type;
123 int int1, int2;
124 int errorno;
125 mode_t mode; /* open */
126
127 unsigned char flags;
128 unsigned char pri;
129
130 SV *self; /* the perl counterpart of this request, if any */
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132} aio_cb;
133
134enum {
135 FLAG_CANCELLED = 0x01,
136 FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */
137};
138
139typedef aio_cb *aio_req; 238typedef eio_req *aio_req;
140typedef aio_cb *aio_req_ornot; 239typedef eio_req *aio_req_ornot;
141 240
142enum { 241static SV *on_next_submit;
143 PRI_MIN = -4, 242static int next_pri = EIO_PRI_DEFAULT;
144 PRI_MAX = 4, 243static int max_outstanding;
145 244
146 DEFAULT_PRI = 0, 245static s_epipe respipe;
147 PRI_BIAS = -PRI_MIN,
148 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149};
150 246
151#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153static unsigned int max_poll_time = 0;
154static unsigned int max_poll_reqs = 0;
155
156/* calculcate time difference in ~1/AIO_TICKS of a second */
157static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158{
159 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
161}
162
163static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165static unsigned int started, idle, wanted;
166
167#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169#else
170# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171#endif
172
173#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176/* worker threads management */
177static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179typedef struct worker {
180 /* locked by wrklock */
181 struct worker *prev, *next;
182
183 pthread_t tid;
184
185 /* locked by reslock, reqlock or wrklock */
186 aio_req req; /* currently processed request */
187 void *dbuf;
188 DIR *dirp;
189} worker;
190
191static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193static void worker_clear (worker *wrk)
194{
195 if (wrk->dirp)
196 {
197 closedir (wrk->dirp);
198 wrk->dirp = 0;
199 }
200
201 if (wrk->dbuf)
202 {
203 free (wrk->dbuf);
204 wrk->dbuf = 0;
205 }
206}
207
208static void worker_free (worker *wrk)
209{
210 wrk->next->prev = wrk->prev;
211 wrk->prev->next = wrk->next;
212
213 free (wrk);
214}
215
216static volatile unsigned int nreqs, nready, npending;
217static volatile unsigned int max_idle = 4;
218static volatile unsigned int max_outstanding = 0xffffffff;
219static int respipe [2];
220
221static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225#if WORDACCESS_UNSAFE
226
227static unsigned int get_nready ()
228{
229 unsigned int retval;
230
231 LOCK (reqlock);
232 retval = nready;
233 UNLOCK (reqlock);
234
235 return retval;
236}
237
238static unsigned int get_npending ()
239{
240 unsigned int retval;
241
242 LOCK (reslock);
243 retval = npending;
244 UNLOCK (reslock);
245
246 return retval;
247}
248
249static unsigned int get_nthreads ()
250{
251 unsigned int retval;
252
253 LOCK (wrklock);
254 retval = started;
255 UNLOCK (wrklock);
256
257 return retval;
258}
259
260#else
261
262# define get_nready() nready
263# define get_npending() npending
264# define get_nthreads() started
265
266#endif
267
268/*
269 * a somewhat faster data structure might be nice, but
270 * with 8 priorities this actually needs <20 insns
271 * per shift, the most expensive operation.
272 */
273typedef struct {
274 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275 int size;
276} reqq;
277
278static reqq req_queue;
279static reqq res_queue;
280
281int reqq_push (reqq *q, aio_req req)
282{
283 int pri = req->pri;
284 req->next = 0;
285
286 if (q->qe[pri])
287 {
288 q->qe[pri]->next = req;
289 q->qe[pri] = req;
290 }
291 else
292 q->qe[pri] = q->qs[pri] = req;
293
294 return q->size++;
295}
296
297aio_req reqq_shift (reqq *q)
298{
299 int pri;
300
301 if (!q->size)
302 return 0;
303
304 --q->size;
305
306 for (pri = NUM_PRI; pri--; )
307 {
308 aio_req req = q->qs[pri];
309
310 if (req)
311 {
312 if (!(q->qs[pri] = req->next))
313 q->qe[pri] = 0;
314
315 return req;
316 }
317 }
318
319 abort ();
320}
321
322static int poll_cb ();
323static void req_invoke (aio_req req);
324static void req_free (aio_req req); 247static void req_destroy (aio_req req);
325static void req_cancel (aio_req req); 248static void req_cancel (aio_req req);
326 249
250static void want_poll (void)
251{
252 /* write a dummy byte to the pipe so fh becomes ready */
253 s_epipe_signal (&respipe);
254}
255
256static void done_poll (void)
257{
258 /* read any signals sent by the worker threads */
259 s_epipe_drain (&respipe);
260}
261
327/* must be called at most once */ 262/* must be called at most once */
328static SV *req_sv (aio_req req, const char *klass) 263static SV *req_sv (aio_req req, HV *stash)
329{ 264{
330 if (!req->self) 265 if (!req->self)
331 { 266 {
332 req->self = (SV *)newHV (); 267 req->self = (SV *)newHV ();
333 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 268 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334 } 269 }
335 270
336 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 271 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337} 272}
338 273
339static aio_req SvAIO_REQ (SV *sv) 274static aio_req SvAIO_REQ (SV *sv)
340{ 275{
341 MAGIC *mg; 276 MAGIC *mg;
342 277
343 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 278 if (!SvROK (sv)
279 || (SvSTASH (SvRV (sv)) != aio_grp_stash
280 && SvSTASH (SvRV (sv)) != aio_req_stash
281 && !sv_derived_from (sv, "IO::AIO::REQ")))
344 croak ("object of class " AIO_REQ_KLASS " expected"); 282 croak ("object of class IO::AIO::REQ expected");
345 283
346 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 284 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347 285
348 return mg ? (aio_req)mg->mg_ptr : 0; 286 return mg ? (aio_req)mg->mg_ptr : 0;
349} 287}
350 288
351static void aio_grp_feed (aio_req grp) 289static void aio_grp_feed (aio_req grp)
352{ 290{
353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 291 if (grp->sv2 && SvOK (grp->sv2))
354 { 292 {
355 int old_len = grp->size;
356
357 if (grp->sv2 && SvOK (grp->sv2))
358 {
359 dSP; 293 dSP;
360 294
361 ENTER; 295 ENTER;
362 SAVETMPS; 296 SAVETMPS;
363 PUSHMARK (SP); 297 PUSHMARK (SP);
364 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 298 XPUSHs (req_sv (grp, aio_grp_stash));
365 PUTBACK; 299 PUTBACK;
366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 300 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367 SPAGAIN; 301 SPAGAIN;
368 FREETMPS; 302 FREETMPS;
369 LEAVE; 303 LEAVE;
370 }
371
372 /* stop if no progress has been made */
373 if (old_len == grp->size)
374 {
375 SvREFCNT_dec (grp->sv2);
376 grp->sv2 = 0;
377 break;
378 }
379 } 304 }
380} 305}
381 306
382static void aio_grp_dec (aio_req grp) 307static void req_submit (eio_req *req)
383{ 308{
384 --grp->size; 309 eio_submit (req);
385 310
386 /* call feeder, if applicable */ 311 if (expect_false (on_next_submit))
387 aio_grp_feed (grp);
388
389 /* finish, if done */
390 if (!grp->size && grp->int1)
391 { 312 {
392 req_invoke (grp); 313 dSP;
393 req_free (grp); 314 SV *cb = sv_2mortal (on_next_submit);
315
316 on_next_submit = 0;
317
318 PUSHMARK (SP);
319 PUTBACK;
320 call_sv (cb, G_DISCARD | G_EVAL);
394 } 321 }
395} 322}
396 323
397static void req_invoke (aio_req req) 324static int req_invoke (eio_req *req)
398{ 325{
399 dSP;
400
401 if (req->flags & FLAG_DATA_RO_OFF) 326 if (req->flags & FLAG_SV2_RO_OFF)
402 SvREADONLY_off (req->sv1); 327 SvREADONLY_off (req->sv2);
403 328
404 if (req->statdata) 329 if (!EIO_CANCELLED (req) && req->callback)
405 { 330 {
406 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 331 dSP;
407 PL_laststatval = req->result; 332 static SV *sv_result_cache; /* caches the result integer SV */
408 PL_statcache = *(req->statdata); 333 SV *sv_result;
409 }
410 334
411 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412 {
413 ENTER; 335 ENTER;
414 SAVETMPS; 336 SAVETMPS;
415 PUSHMARK (SP); 337 PUSHMARK (SP);
416 EXTEND (SP, 1); 338 EXTEND (SP, 1);
417 339
340 /* do not recreate the result IV from scratch each time */
341 if (expect_true (sv_result_cache))
342 {
343 sv_result = sv_result_cache; sv_result_cache = 0;
344 SvIV_set (sv_result, req->result);
345 }
346 else
347 {
348 sv_result = newSViv (req->result);
349 SvREADONLY_on (sv_result);
350 }
351
418 switch (req->type) 352 switch (req->type)
419 { 353 {
420 case REQ_READDIR: 354 case EIO_READDIR:
421 { 355 {
422 SV *rv = &PL_sv_undef; 356 SV *rv = &PL_sv_undef;
423 357
424 if (req->result >= 0) 358 if (req->result >= 0)
425 { 359 {
426 int i; 360 int i;
427 char *buf = req->ptr2; 361 char *names = (char *)req->ptr2;
362 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428 AV *av = newAV (); 363 AV *av = newAV ();
429 364
430 av_extend (av, req->result - 1); 365 av_extend (av, req->result - 1);
431 366
432 for (i = 0; i < req->result; ++i) 367 for (i = 0; i < req->result; ++i)
433 { 368 {
434 SV *sv = newSVpv (buf, 0); 369 if (req->int1 & EIO_READDIR_DENTS)
370 {
371 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435 372
373 if (req->int1 & EIO_READDIR_CUSTOM2)
374 {
375 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
376 AV *avent = newAV ();
377
378 av_extend (avent, 2);
379
380 if (!sv_type [ent->type])
381 {
382 sv_type [ent->type] = newSViv (ent->type);
383 SvREADONLY_on (sv_type [ent->type]);
384 }
385
386 av_store (avent, 0, namesv);
387 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
388 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
389
390 av_store (av, i, newRV_noinc ((SV *)avent));
391 }
392 else
436 av_store (av, i, sv); 393 av_store (av, i, namesv);
394
395 ++ent;
396 }
397 else
398 {
399 SV *name = newSVpv (names, 0);
400 av_store (av, i, name);
437 buf += SvCUR (sv) + 1; 401 names += SvCUR (name) + 1;
402 }
438 } 403 }
439 404
440 rv = sv_2mortal (newRV_noinc ((SV *)av)); 405 rv = sv_2mortal (newRV_noinc ((SV *)av));
441 } 406 }
442 407
443 PUSHs (rv); 408 PUSHs (rv);
409
410 if (req->int1 & EIO_READDIR_CUSTOM1)
411 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444 } 412 }
445 break; 413 break;
446 414
447 case REQ_OPEN: 415 case EIO_OPEN:
448 { 416 {
449 /* convert fd to fh */ 417 /* convert fd to fh */
450 SV *fh; 418 SV *fh = &PL_sv_undef;
451 419
452 PUSHs (sv_2mortal (newSViv (req->result))); 420 if (req->result >= 0)
453 PUTBACK; 421 {
454 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 422 GV *gv = (GV *)sv_newmortal ();
455 SPAGAIN; 423 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
424 char sym [64];
425 int symlen;
426
427 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
428 gv_init (gv, aio_stash, sym, symlen, 0);
456 429
457 fh = SvREFCNT_inc (POPs); 430 symlen = snprintf (
431 sym,
432 sizeof (sym),
433 "%s&=%d",
434 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
435 (int)req->result
436 );
458 437
438 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
439 fh = (SV *)gv;
440 }
441
459 PUSHMARK (SP); 442 PUSHs (fh);
460 XPUSHs (sv_2mortal (fh));
461 } 443 }
462 break; 444 break;
463 445
446 case EIO_STATVFS:
447 case EIO_FSTATVFS:
448 {
449 SV *rv = &PL_sv_undef;
450
451 if (req->result >= 0)
452 {
453 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
454 HV *hv = newHV ();
455
456 rv = sv_2mortal (newRV_noinc ((SV *)hv));
457
458 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
459 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
460 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
461 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
462 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
463 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
464 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
465 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
466 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
467 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
468 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
469 }
470
471 PUSHs (rv);
472 }
473
474 break;
475
464 case REQ_GROUP: 476 case EIO_GROUP:
465 req->int1 = 2; /* mark group as finished */ 477 req->int1 = 2; /* mark group as finished */
466 478
467 if (req->sv1) 479 if (req->sv1)
468 { 480 {
469 int i; 481 int i;
473 for (i = 0; i <= AvFILL (av); ++i) 485 for (i = 0; i <= AvFILL (av); ++i)
474 PUSHs (*av_fetch (av, i, 0)); 486 PUSHs (*av_fetch (av, i, 0));
475 } 487 }
476 break; 488 break;
477 489
478 case REQ_NOP: 490 case EIO_NOP:
479 case REQ_BUSY: 491 case EIO_BUSY:
480 break; 492 break;
481 493
482 case REQ_READLINK: 494 case EIO_READLINK:
483 if (req->result > 0) 495 if (req->result > 0)
484 { 496 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
485 SvCUR_set (req->sv1, req->result);
486 *SvEND (req->sv1) = 0;
487 PUSHs (req->sv1);
488 }
489 break; 497 break;
490 498
499 case EIO_STAT:
500 case EIO_LSTAT:
501 case EIO_FSTAT:
502 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
503 PL_laststatval = req->result;
504 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
505 PUSHs (sv_result);
506 break;
507
491 case REQ_READ: 508 case EIO_READ:
509 {
492 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 510 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
493 *SvEND (req->sv1) = 0; 511 *SvEND (req->sv2) = 0;
494 /* fall through */ 512 SvPOK_only (req->sv2);
513 SvSETMAGIC (req->sv2);
514 PUSHs (sv_result);
515 }
516 break;
517
518 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
519 if (req->result > 0)
520 SvIV_set (sv_result, 0);
521 /* FALLTHROUGH */
522
495 default: 523 default:
496 PUSHs (sv_2mortal (newSViv (req->result))); 524 PUSHs (sv_result);
497 break; 525 break;
498 } 526 }
499 527
500 errno = req->errorno; 528 errno = req->errorno;
501 529
502 PUTBACK; 530 PUTBACK;
503 call_sv (req->callback, G_VOID | G_EVAL); 531 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504 SPAGAIN; 532 SPAGAIN;
533
534 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
535 SvREFCNT_dec (sv_result);
536 else
537 sv_result_cache = sv_result;
505 538
506 FREETMPS; 539 FREETMPS;
507 LEAVE; 540 LEAVE;
541
542 PUTBACK;
508 } 543 }
509 544
510 if (req->grp) 545 return !!SvTRUE (ERRSV);
511 {
512 aio_req grp = req->grp;
513
514 /* unlink request */
515 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518 if (grp->grp_first == req)
519 grp->grp_first = req->grp_next;
520
521 aio_grp_dec (grp);
522 }
523
524 if (SvTRUE (ERRSV))
525 {
526 req_free (req);
527 croak (0);
528 }
529} 546}
530 547
531static void req_free (aio_req req) 548static void req_destroy (aio_req req)
532{ 549{
533 if (req->self) 550 if (req->self)
534 { 551 {
535 sv_unmagic (req->self, PERL_MAGIC_ext); 552 sv_unmagic (req->self, PERL_MAGIC_ext);
536 SvREFCNT_dec (req->self); 553 SvREFCNT_dec (req->self);
537 } 554 }
538 555
539 SvREFCNT_dec (req->fh);
540 SvREFCNT_dec (req->sv1); 556 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2); 557 SvREFCNT_dec (req->sv2);
542 SvREFCNT_dec (req->callback); 558 SvREFCNT_dec (req->callback);
543 Safefree (req->statdata);
544
545 if (req->type == REQ_READDIR)
546 free (req->ptr2);
547 559
548 Safefree (req); 560 Safefree (req);
549} 561}
550 562
551static void req_cancel_subs (aio_req grp) 563static void req_cancel_subs (aio_req grp)
552{ 564{
553 aio_req sub; 565 aio_req sub;
554 566
555 if (grp->type != REQ_GROUP) 567 if (grp->type != EIO_GROUP)
556 return; 568 return;
557 569
558 SvREFCNT_dec (grp->sv2); 570 SvREFCNT_dec (grp->sv2);
559 grp->sv2 = 0; 571 grp->sv2 = 0;
560 572
561 for (sub = grp->grp_first; sub; sub = sub->grp_next) 573 eio_grp_cancel (grp);
562 req_cancel (sub);
563} 574}
564 575
565static void req_cancel (aio_req req) 576static void
577create_respipe (void)
566{ 578{
567 req->flags |= FLAG_CANCELLED; 579 if (s_epipe_renew (&respipe))
568 580 croak ("IO::AIO: unable to initialize result pipe");
569 req_cancel_subs (req);
570} 581}
571 582
572static void *aio_proc(void *arg);
573
574static void start_thread (void)
575{
576 sigset_t fullsigset, oldsigset;
577 pthread_attr_t attr;
578
579 worker *wrk = calloc (1, sizeof (worker));
580
581 if (!wrk)
582 croak ("unable to allocate worker thread data");
583
584 pthread_attr_init (&attr);
585 pthread_attr_setstacksize (&attr, STACKSIZE);
586 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587#ifdef PTHREAD_SCOPE_PROCESS
588 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589#endif
590
591 sigfillset (&fullsigset);
592
593 LOCK (wrklock);
594 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597 {
598 wrk->prev = &wrk_first;
599 wrk->next = wrk_first.next;
600 wrk_first.next->prev = wrk;
601 wrk_first.next = wrk;
602 ++started;
603 }
604 else
605 free (wrk);
606
607 sigprocmask (SIG_SETMASK, &oldsigset, 0);
608 UNLOCK (wrklock);
609}
610
611static void maybe_start_thread ()
612{
613 if (get_nthreads () >= wanted)
614 return;
615
616 /* todo: maybe use idle here, but might be less exact */
617 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618 return;
619
620 start_thread ();
621}
622
623static void req_send (aio_req req)
624{
625 ++nreqs;
626
627 LOCK (reqlock);
628 ++nready;
629 reqq_push (&req_queue, req);
630 pthread_cond_signal (&reqwait);
631 UNLOCK (reqlock);
632
633 maybe_start_thread ();
634}
635
636static void end_thread (void)
637{
638 aio_req req;
639
640 Newz (0, req, 1, aio_cb);
641
642 req->type = REQ_QUIT;
643 req->pri = PRI_MAX + PRI_BIAS;
644
645 LOCK (reqlock);
646 reqq_push (&req_queue, req);
647 pthread_cond_signal (&reqwait);
648 UNLOCK (reqlock);
649
650 LOCK (wrklock);
651 --started;
652 UNLOCK (wrklock);
653}
654
655static void set_max_idle (int nthreads)
656{
657 if (WORDACCESS_UNSAFE) LOCK (reqlock);
658 max_idle = nthreads <= 0 ? 1 : nthreads;
659 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660}
661
662static void min_parallel (int nthreads)
663{
664 if (wanted < nthreads)
665 wanted = nthreads;
666}
667
668static void max_parallel (int nthreads)
669{
670 if (wanted > nthreads)
671 wanted = nthreads;
672
673 while (started > wanted)
674 end_thread ();
675}
676
677static void poll_wait () 583static void poll_wait (void)
678{ 584{
679 fd_set rfd;
680
681 while (nreqs) 585 while (eio_nreqs ())
682 { 586 {
683 int size; 587 int size;
684 if (WORDACCESS_UNSAFE) LOCK (reslock); 588
589 X_LOCK (reslock);
685 size = res_queue.size; 590 size = res_queue.size;
686 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 591 X_UNLOCK (reslock);
687 592
688 if (size) 593 if (size)
689 return; 594 return;
690 595
691 maybe_start_thread (); 596 etp_maybe_start_thread ();
692 597
693 FD_ZERO(&rfd); 598 s_epipe_wait (&respipe);
694 FD_SET(respipe [0], &rfd);
695
696 select (respipe [0] + 1, &rfd, 0, 0, 0);
697 } 599 }
698} 600}
699 601
700static int poll_cb () 602static int poll_cb (void)
701{ 603{
702 dSP;
703 int count = 0;
704 int maxreqs = max_poll_reqs;
705 int do_croak = 0;
706 struct timeval tv_start, tv_now;
707 aio_req req;
708
709 if (max_poll_time)
710 gettimeofday (&tv_start, 0);
711
712 for (;;) 604 for (;;)
713 { 605 {
714 for (;;) 606 int res = eio_poll ();
715 {
716 maybe_start_thread ();
717 607
718 LOCK (reslock); 608 if (res > 0)
719 req = reqq_shift (&res_queue);
720
721 if (req)
722 {
723 --npending;
724
725 if (!res_queue.size)
726 {
727 /* read any signals sent by the worker threads */
728 char buf [32];
729 while (read (respipe [0], buf, 32) == 32)
730 ;
731 }
732 }
733
734 UNLOCK (reslock);
735
736 if (!req)
737 break;
738
739 --nreqs;
740
741 if (req->type == REQ_GROUP && req->size)
742 {
743 req->int1 = 1; /* mark request as delayed */
744 continue;
745 }
746 else
747 {
748 req_invoke (req);
749
750 count++;
751 }
752
753 req_free (req);
754
755 if (maxreqs && !--maxreqs)
756 break;
757
758 if (max_poll_time)
759 {
760 gettimeofday (&tv_now, 0);
761
762 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763 break;
764 }
765 }
766
767 if (nreqs <= max_outstanding)
768 break; 609 croak (0);
610
611 if (!max_outstanding || max_outstanding > eio_nreqs ())
612 return res;
769 613
770 poll_wait (); 614 poll_wait ();
771
772 ++maxreqs;
773 } 615 }
774
775 return count;
776} 616}
777 617
778static void create_pipe () 618static void atfork_child (void)
779{ 619{
780 if (pipe (respipe)) 620 create_respipe ();
781 croak ("unable to initialize result pipe");
782
783 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784 croak ("cannot set result pipe to nonblocking mode");
785
786 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787 croak ("cannot set result pipe to nonblocking mode");
788} 621}
789 622
790/*****************************************************************************/ 623/*****************************************************************************/
791/* work around various missing functions */
792 624
793#if !HAVE_PREADWRITE 625#if !_POSIX_MAPPED_FILES
794# define pread aio_pread 626# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
795# define pwrite aio_pwrite 627# define munmap(addr,length) (errno = ENOSYS, -1)
796
797/*
798 * make our pread/pwrite safe against themselves, but not against
799 * normal read/write by using a mutex. slows down execution a lot,
800 * but that's your problem, not mine.
801 */
802static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805{
806 ssize_t res;
807 off_t ooffset;
808
809 LOCK (preadwritelock);
810 ooffset = lseek (fd, 0, SEEK_CUR);
811 lseek (fd, offset, SEEK_SET);
812 res = read (fd, buf, count);
813 lseek (fd, ooffset, SEEK_SET);
814 UNLOCK (preadwritelock);
815
816 return res;
817}
818
819static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820{
821 ssize_t res;
822 off_t ooffset;
823
824 LOCK (preadwritelock);
825 ooffset = lseek (fd, 0, SEEK_CUR);
826 lseek (fd, offset, SEEK_SET);
827 res = write (fd, buf, count);
828 lseek (fd, offset, SEEK_SET);
829 UNLOCK (preadwritelock);
830
831 return res;
832}
833#endif
834
835#if !HAVE_FDATASYNC
836# define fdatasync fsync
837#endif
838
839#if !HAVE_READAHEAD
840# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843{
844 dBUF;
845
846 while (count > 0)
847 {
848 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850 pread (fd, aio_buf, len, offset);
851 offset += len;
852 count -= len;
853 }
854
855 errno = 0;
856}
857
858#endif
859
860#if !HAVE_READDIR_R
861# define readdir_r aio_readdir_r
862
863static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866{
867 struct dirent *e;
868 int errorno;
869
870 LOCK (readdirlock);
871
872 e = readdir (dirp);
873 errorno = errno;
874
875 if (e)
876 {
877 *res = ent;
878 strcpy (ent->d_name, e->d_name);
879 }
880 else
881 *res = 0;
882
883 UNLOCK (readdirlock);
884
885 errno = errorno;
886 return e ? 0 : -1;
887}
888#endif
889
890/* sendfile always needs emulation */
891static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892{
893 ssize_t res;
894
895 if (!count)
896 return 0;
897
898#if HAVE_SENDFILE
899# if __linux
900 res = sendfile (ofd, ifd, &offset, count);
901
902# elif __freebsd
903 /*
904 * Of course, the freebsd sendfile is a dire hack with no thoughts
905 * wasted on making it similar to other I/O functions.
906 */
907 {
908 off_t sbytes;
909 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910
911 if (res < 0 && sbytes)
912 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913 res = sbytes;
914 }
915
916# elif __hpux
917 res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919# elif __solaris
920 {
921 struct sendfilevec vec;
922 size_t sbytes;
923
924 vec.sfv_fd = ifd;
925 vec.sfv_flag = 0;
926 vec.sfv_off = offset;
927 vec.sfv_len = count;
928
929 res = sendfilev (ofd, &vec, 1, &sbytes);
930
931 if (res < 0 && sbytes)
932 res = sbytes;
933 }
934
935# endif 628#endif
936#else
937 res = -1;
938 errno = ENOSYS;
939#endif
940 629
941 if (res < 0 630#define MMAP_MAGIC PERL_MAGIC_ext
942 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943#if __solaris
944 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
945#endif
946 )
947 )
948 {
949 /* emulate sendfile. this is a major pain in the ass */
950 dBUF;
951 631
952 res = 0; 632static int
633mmap_free (pTHX_ SV *sv, MAGIC *mg)
634{
635 int old_errno = errno;
636 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
637 errno = old_errno;
953 638
954 while (count) 639 mg->mg_obj = 0; /* just in case */
955 {
956 ssize_t cnt;
957
958 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959 640
960 if (cnt <= 0) 641 SvREADONLY_off (sv);
961 {
962 if (cnt && !res) res = -1;
963 break;
964 }
965 642
966 cnt = write (ofd, aio_buf, cnt); 643 if (SvPVX (sv) != mg->mg_ptr)
644 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
967 645
968 if (cnt <= 0) 646 SvCUR_set (sv, 0);
969 { 647 SvPVX (sv) = 0;
970 if (cnt && !res) res = -1; 648 SvOK_off (sv);
971 break;
972 }
973 649
974 offset += cnt;
975 res += cnt;
976 count -= cnt;
977 }
978 }
979
980 return res; 650 return 0;
981} 651}
982 652
983/* read a full directory */ 653static MGVTBL mmap_vtbl = {
984static void scandir_ (aio_req req, worker *self) 654 0, 0, 0, 0, mmap_free
985{ 655};
986 DIR *dirp;
987 union
988 {
989 struct dirent d;
990 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991 } *u;
992 struct dirent *entp;
993 char *name, *names;
994 int memlen = 4096;
995 int memofs = 0;
996 int res = 0;
997 int errorno;
998
999 LOCK (wrklock);
1000 self->dirp = dirp = opendir (req->ptr1);
1001 self->dbuf = u = malloc (sizeof (*u));
1002 req->ptr2 = names = malloc (memlen);
1003 UNLOCK (wrklock);
1004
1005 if (dirp && u && names)
1006 for (;;)
1007 {
1008 errno = 0;
1009 readdir_r (dirp, &u->d, &entp);
1010
1011 if (!entp)
1012 break;
1013
1014 name = entp->d_name;
1015
1016 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017 {
1018 int len = strlen (name) + 1;
1019
1020 res++;
1021
1022 while (memofs + len > memlen)
1023 {
1024 memlen *= 2;
1025 LOCK (wrklock);
1026 req->ptr2 = names = realloc (names, memlen);
1027 UNLOCK (wrklock);
1028
1029 if (!names)
1030 break;
1031 }
1032
1033 memcpy (names + memofs, name, len);
1034 memofs += len;
1035 }
1036 }
1037
1038 if (errno)
1039 res = -1;
1040
1041 req->result = res;
1042}
1043 656
1044/*****************************************************************************/ 657/*****************************************************************************/
1045 658
1046static void *aio_proc (void *thr_arg) 659static SV *
660get_cb (SV *cb_sv)
1047{ 661{
1048 aio_req req; 662 SvGETMAGIC (cb_sv);
1049 struct timespec ts; 663 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1050 worker *self = (worker *)thr_arg;
1051
1052 /* try to distribute timeouts somewhat evenly */
1053 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054 * (1000000000UL / 1024UL);
1055
1056 for (;;)
1057 {
1058 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060 LOCK (reqlock);
1061
1062 for (;;)
1063 {
1064 self->req = req = reqq_shift (&req_queue);
1065
1066 if (req)
1067 break;
1068
1069 ++idle;
1070
1071 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072 == ETIMEDOUT)
1073 {
1074 if (idle > max_idle)
1075 {
1076 --idle;
1077 UNLOCK (reqlock);
1078 LOCK (wrklock);
1079 --started;
1080 UNLOCK (wrklock);
1081 goto quit;
1082 }
1083
1084 /* we are allowed to idle, so do so without any timeout */
1085 pthread_cond_wait (&reqwait, &reqlock);
1086 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087 }
1088
1089 --idle;
1090 }
1091
1092 --nready;
1093
1094 UNLOCK (reqlock);
1095
1096 errno = 0; /* strictly unnecessary */
1097
1098 if (!(req->flags & FLAG_CANCELLED))
1099 switch (req->type)
1100 {
1101 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107 case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108 case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109 case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112 case REQ_CLOSE: req->result = close (req->int1); break;
1113 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122 case REQ_FSYNC: req->result = fsync (req->int1); break;
1123 case REQ_READDIR: scandir_ (req, self); break;
1124
1125 case REQ_BUSY:
1126 {
1127 struct timeval tv;
1128
1129 tv.tv_sec = req->int1;
1130 tv.tv_usec = req->int2;
1131
1132 req->result = select (0, 0, 0, 0, &tv);
1133 }
1134
1135 case REQ_GROUP:
1136 case REQ_NOP:
1137 break;
1138
1139 case REQ_QUIT:
1140 goto quit;
1141
1142 default:
1143 req->result = ENOSYS;
1144 break;
1145 }
1146
1147 req->errorno = errno;
1148
1149 LOCK (reslock);
1150
1151 ++npending;
1152
1153 if (!reqq_push (&res_queue, req))
1154 /* write a dummy byte to the pipe so fh becomes ready */
1155 write (respipe [1], &respipe, 1);
1156
1157 self->req = 0;
1158 worker_clear (self);
1159
1160 UNLOCK (reslock);
1161 }
1162
1163quit:
1164 LOCK (wrklock);
1165 worker_free (self);
1166 UNLOCK (wrklock);
1167
1168 return 0;
1169}
1170
1171/*****************************************************************************/
1172
1173static void atfork_prepare (void)
1174{
1175 LOCK (wrklock);
1176 LOCK (reqlock);
1177 LOCK (reslock);
1178#if !HAVE_PREADWRITE
1179 LOCK (preadwritelock);
1180#endif
1181#if !HAVE_READDIR_R
1182 LOCK (readdirlock);
1183#endif
1184}
1185
1186static void atfork_parent (void)
1187{
1188#if !HAVE_READDIR_R
1189 UNLOCK (readdirlock);
1190#endif
1191#if !HAVE_PREADWRITE
1192 UNLOCK (preadwritelock);
1193#endif
1194 UNLOCK (reslock);
1195 UNLOCK (reqlock);
1196 UNLOCK (wrklock);
1197}
1198
1199static void atfork_child (void)
1200{
1201 aio_req prv;
1202
1203 while (prv = reqq_shift (&req_queue))
1204 req_free (prv);
1205
1206 while (prv = reqq_shift (&res_queue))
1207 req_free (prv);
1208
1209 while (wrk_first.next != &wrk_first)
1210 {
1211 worker *wrk = wrk_first.next;
1212
1213 if (wrk->req)
1214 req_free (wrk->req);
1215
1216 worker_clear (wrk);
1217 worker_free (wrk);
1218 }
1219
1220 started = 0;
1221 idle = 0;
1222 nreqs = 0;
1223 nready = 0;
1224 npending = 0;
1225
1226 close (respipe [0]);
1227 close (respipe [1]);
1228 create_pipe ();
1229
1230 atfork_parent ();
1231} 664}
1232 665
1233#define dREQ \ 666#define dREQ \
667 SV *cb_cv; \
1234 aio_req req; \ 668 aio_req req; \
1235 int req_pri = next_pri; \ 669 int req_pri = next_pri; \
1236 next_pri = DEFAULT_PRI + PRI_BIAS; \ 670 next_pri = EIO_PRI_DEFAULT; \
1237 \ 671 \
1238 if (SvOK (callback) && !SvROK (callback)) \ 672 cb_cv = get_cb (callback); \
1239 croak ("callback must be undef or of reference type"); \
1240 \ 673 \
1241 Newz (0, req, 1, aio_cb); \ 674 Newz (0, req, 1, eio_req); \
1242 if (!req) \ 675 if (!req) \
1243 croak ("out of memory during aio_req allocation"); \ 676 croak ("out of memory during eio_req allocation"); \
1244 \ 677 \
1245 req->callback = newSVsv (callback); \ 678 req->callback = SvREFCNT_inc (cb_cv); \
1246 req->pri = req_pri 679 req->pri = req_pri
1247 680
1248#define REQ_SEND \ 681#define REQ_SEND \
682 PUTBACK; \
1249 req_send (req); \ 683 req_submit (req); \
684 SPAGAIN; \
1250 \ 685 \
1251 if (GIMME_V != G_VOID) \ 686 if (GIMME_V != G_VOID) \
1252 XPUSHs (req_sv (req, AIO_REQ_KLASS)); 687 XPUSHs (req_sv (req, aio_req_stash));
1253 688
1254MODULE = IO::AIO PACKAGE = IO::AIO 689MODULE = IO::AIO PACKAGE = IO::AIO
1255 690
1256PROTOTYPES: ENABLE 691PROTOTYPES: ENABLE
1257 692
1258BOOT: 693BOOT:
1259{ 694{
695 static const struct {
696 const char *name;
697 IV iv;
698 } *civ, const_iv[] = {
699# define const_niv(name, value) { # name, (IV) value },
700# define const_iv(name) { # name, (IV) name },
701# define const_eio(name) { # name, (IV) EIO_ ## name },
702 const_iv (EXDEV)
703 const_iv (ENOSYS)
704 const_iv (O_RDONLY)
705 const_iv (O_WRONLY)
706 const_iv (O_RDWR)
707 const_iv (O_CREAT)
708 const_iv (O_TRUNC)
709 const_iv (O_EXCL)
710 const_iv (O_APPEND)
711#ifndef _WIN32
712 const_iv (S_IFIFO)
713#endif
714 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
715 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
716 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
717 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
718 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
719 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
720
721 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
722 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
723 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
724 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
725 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
726
727 const_iv (ST_RDONLY)
728 const_iv (ST_NOSUID)
729 const_iv (ST_NODEV)
730 const_iv (ST_NOEXEC)
731 const_iv (ST_SYNCHRONOUS)
732 const_iv (ST_MANDLOCK)
733 const_iv (ST_WRITE)
734 const_iv (ST_APPEND)
735 const_iv (ST_IMMUTABLE)
736 const_iv (ST_NOATIME)
737 const_iv (ST_NODIRATIME)
738 const_iv (ST_RELATIME)
739
740 const_iv (PROT_EXEC)
741 const_iv (PROT_NONE)
742 const_iv (PROT_READ)
743 const_iv (PROT_WRITE)
744
745 /*const_iv (MAP_FIXED)*/
746 const_iv (MAP_PRIVATE)
747 const_iv (MAP_SHARED)
748 const_iv (MAP_ANONYMOUS)
749
750 /* linuxish */
751 const_iv (MAP_HUGETLB)
752 const_iv (MAP_LOCKED)
753 const_iv (MAP_NORESERVE)
754 const_iv (MAP_POPULATE)
755 const_iv (MAP_NONBLOCK)
756
757 const_iv (MCL_FUTURE)
758 const_iv (MCL_CURRENT)
759
760 const_eio (MS_ASYNC)
761 const_eio (MS_INVALIDATE)
762 const_eio (MS_SYNC)
763
764 const_eio (MT_MODIFY)
765
766 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
767 const_eio (SYNC_FILE_RANGE_WRITE)
768 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
769
770 const_eio (READDIR_DENTS)
771 const_eio (READDIR_DIRS_FIRST)
772 const_eio (READDIR_STAT_ORDER)
773 const_eio (READDIR_FOUND_UNKNOWN)
774
775 const_eio (DT_UNKNOWN)
776 const_eio (DT_FIFO)
777 const_eio (DT_CHR)
778 const_eio (DT_DIR)
779 const_eio (DT_BLK)
780 const_eio (DT_REG)
781 const_eio (DT_LNK)
782 const_eio (DT_SOCK)
783 const_eio (DT_WHT)
784 };
785
1260 HV *stash = gv_stashpv ("IO::AIO", 1); 786 aio_stash = gv_stashpv ("IO::AIO" , 1);
787 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
788 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1261 789
1262 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 790 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1263 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 791 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1264 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268 792
793 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
794
1269 create_pipe (); 795 create_respipe ();
1270 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 796
797 if (eio_init (want_poll, done_poll) < 0)
798 croak ("IO::AIO: unable to initialise eio library");
799
800 /* atfork child called in fifo order, so before eio's handler */
801 X_THREAD_ATFORK (0, 0, atfork_child);
1271} 802}
1272 803
1273void 804void
1274max_poll_reqs (int nreqs) 805max_poll_reqs (int nreqs)
1275 PROTOTYPE: $ 806 PROTOTYPE: $
1276 CODE: 807 CODE:
1277 max_poll_reqs = nreqs; 808 eio_set_max_poll_reqs (nreqs);
1278 809
1279void 810void
1280max_poll_time (double nseconds) 811max_poll_time (double nseconds)
1281 PROTOTYPE: $ 812 PROTOTYPE: $
1282 CODE: 813 CODE:
1283 max_poll_time = nseconds * AIO_TICKS; 814 eio_set_max_poll_time (nseconds);
1284 815
1285void 816void
1286min_parallel (int nthreads) 817min_parallel (int nthreads)
1287 PROTOTYPE: $ 818 PROTOTYPE: $
819 CODE:
820 eio_set_min_parallel (nthreads);
1288 821
1289void 822void
1290max_parallel (int nthreads) 823max_parallel (int nthreads)
1291 PROTOTYPE: $ 824 PROTOTYPE: $
825 CODE:
826 eio_set_max_parallel (nthreads);
1292 827
1293void 828void
1294max_idle (int nthreads) 829max_idle (int nthreads)
1295 PROTOTYPE: $ 830 PROTOTYPE: $
1296 CODE: 831 CODE:
1297 set_max_idle (nthreads); 832 eio_set_max_idle (nthreads);
1298 833
1299int 834void
1300max_outstanding (int maxreqs) 835max_outstanding (int maxreqs)
1301 PROTOTYPE: $ 836 PROTOTYPE: $
1302 CODE: 837 CODE:
1303 RETVAL = max_outstanding;
1304 max_outstanding = maxreqs; 838 max_outstanding = maxreqs;
1305 OUTPUT:
1306 RETVAL
1307 839
1308void 840void
1309aio_open (pathname,flags,mode,callback=&PL_sv_undef) 841aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1310 SV * pathname
1311 int flags
1312 int mode
1313 SV * callback
1314 PROTOTYPE: $$$;$ 842 PROTOTYPE: $$$;$
1315 PPCODE: 843 PPCODE:
1316{ 844{
1317 dREQ; 845 dREQ;
1318 846
1319 req->type = REQ_OPEN; 847 req->type = EIO_OPEN;
1320 req->sv1 = newSVsv (pathname); 848 req->sv1 = newSVsv (pathname);
1321 req->ptr1 = SvPVbyte_nolen (pathname); 849 req->ptr1 = SvPVbyte_nolen (req->sv1);
1322 req->int1 = flags; 850 req->int1 = flags;
1323 req->mode = mode; 851 req->int2 = mode;
1324 852
1325 REQ_SEND; 853 REQ_SEND;
1326} 854}
1327 855
1328void 856void
1329aio_close (fh,callback=&PL_sv_undef) 857aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330 SV * fh
1331 SV * callback
1332 PROTOTYPE: $;$ 858 PROTOTYPE: $;$
1333 ALIAS: 859 ALIAS:
1334 aio_close = REQ_CLOSE
1335 aio_fsync = REQ_FSYNC 860 aio_fsync = EIO_FSYNC
1336 aio_fdatasync = REQ_FDATASYNC 861 aio_fdatasync = EIO_FDATASYNC
1337 PPCODE: 862 PPCODE:
1338{ 863{
864 int fd = s_fileno_croak (fh, 0);
1339 dREQ; 865 dREQ;
1340 866
1341 req->type = ix; 867 req->type = ix;
1342 req->fh = newSVsv (fh); 868 req->sv1 = newSVsv (fh);
1343 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 869 req->int1 = fd;
1344 870
1345 REQ_SEND (req); 871 REQ_SEND (req);
1346} 872}
1347 873
1348void 874void
875aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
876 PROTOTYPE: $$$$;$
877 PPCODE:
878{
879 int fd = s_fileno_croak (fh, 0);
880 dREQ;
881
882 req->type = EIO_SYNC_FILE_RANGE;
883 req->sv1 = newSVsv (fh);
884 req->int1 = fd;
885 req->offs = offset;
886 req->size = nbytes;
887 req->int2 = flags;
888
889 REQ_SEND (req);
890}
891
892void
893aio_close (SV *fh, SV *callback=&PL_sv_undef)
894 PROTOTYPE: $;$
895 PPCODE:
896{
897 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
898 int fd = s_fileno_croak (fh, 0);
899 dREQ;
900
901 if (close_pipe < 0)
902 {
903 int pipefd [2];
904
905 if (pipe (pipefd) < 0
906 || close (pipefd [1]) < 0
907 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
908 abort (); /*D*/
909
910 close_pipe = pipefd [0];
911 }
912
913 req->type = EIO_DUP2;
914 req->int1 = close_pipe;
915 req->sv2 = newSVsv (fh);
916 req->int2 = fd;
917
918 REQ_SEND (req);
919}
920
921void
1349aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 922aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350 SV * fh
1351 UV offset
1352 UV length
1353 SV * data
1354 UV dataoffset
1355 SV * callback
1356 ALIAS: 923 ALIAS:
1357 aio_read = REQ_READ 924 aio_read = EIO_READ
1358 aio_write = REQ_WRITE 925 aio_write = EIO_WRITE
1359 PROTOTYPE: $$$$$;$ 926 PROTOTYPE: $$$$$;$
1360 PPCODE: 927 PPCODE:
1361{ 928{
1362 STRLEN svlen; 929 STRLEN svlen;
930 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363 char *svptr = SvPVbyte (data, svlen); 931 char *svptr = SvPVbyte (data, svlen);
1364 932 UV len = SvUV (length);
1365 SvUPGRADE (data, SVt_PV);
1366 SvPOK_on (data);
1367 933
1368 if (dataoffset < 0) 934 if (dataoffset < 0)
1369 dataoffset += svlen; 935 dataoffset += svlen;
1370 936
1371 if (dataoffset < 0 || dataoffset > svlen) 937 if (dataoffset < 0 || dataoffset > svlen)
1372 croak ("data offset outside of string"); 938 croak ("dataoffset outside of data scalar");
1373 939
1374 if (ix == REQ_WRITE) 940 if (ix == EIO_WRITE)
1375 { 941 {
1376 /* write: check length and adjust. */ 942 /* write: check length and adjust. */
1377 if (length < 0 || length + dataoffset > svlen) 943 if (!SvOK (length) || len + dataoffset > svlen)
1378 length = svlen - dataoffset; 944 len = svlen - dataoffset;
1379 } 945 }
1380 else 946 else
1381 { 947 {
1382 /* read: grow scalar as necessary */ 948 /* read: check type and grow scalar as necessary */
949 SvUPGRADE (data, SVt_PV);
1383 svptr = SvGROW (data, length + dataoffset); 950 svptr = SvGROW (data, len + dataoffset + 1);
1384 } 951 }
1385
1386 if (length < 0)
1387 croak ("length must not be negative");
1388 952
1389 { 953 {
1390 dREQ; 954 dREQ;
1391 955
1392 req->type = ix; 956 req->type = ix;
1393 req->fh = newSVsv (fh); 957 req->sv1 = newSVsv (fh);
1394 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 958 req->int1 = fd;
1395 : IoOFP (sv_2io (fh))); 959 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396 req->offs = offset;
1397 req->size = length; 960 req->size = len;
1398 req->sv1 = SvREFCNT_inc (data); 961 req->sv2 = SvREFCNT_inc (data);
1399 req->ptr1 = (char *)svptr + dataoffset; 962 req->ptr2 = (char *)svptr + dataoffset;
1400 req->stroffset = dataoffset; 963 req->stroffset = dataoffset;
1401 964
1402 if (!SvREADONLY (data)) 965 if (!SvREADONLY (data))
1403 { 966 {
1404 SvREADONLY_on (data); 967 SvREADONLY_on (data);
1405 req->flags |= FLAG_DATA_RO_OFF; 968 req->flags |= FLAG_SV2_RO_OFF;
1406 } 969 }
1407 970
1408 REQ_SEND; 971 REQ_SEND;
1409 } 972 }
1410} 973}
1411 974
1412void 975void
1413aio_readlink (path,callback=&PL_sv_undef) 976aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1414 SV * path
1415 SV * callback
1416 PROTOTYPE: $$;$ 977 PROTOTYPE: $$;$
1417 PPCODE: 978 PPCODE:
1418{ 979{
1419 SV *data; 980 SV *data;
1420 dREQ; 981 dREQ;
1421 982
1422 data = newSV (NAME_MAX);
1423 SvPOK_on (data);
1424
1425 req->type = REQ_READLINK; 983 req->type = EIO_READLINK;
1426 req->fh = newSVsv (path); 984 req->sv1 = newSVsv (path);
1427 req->ptr2 = SvPVbyte_nolen (path);
1428 req->sv1 = data;
1429 req->ptr1 = SvPVbyte_nolen (data); 985 req->ptr1 = SvPVbyte_nolen (req->sv1);
1430 986
1431 REQ_SEND; 987 REQ_SEND;
1432} 988}
1433 989
1434void 990void
1435aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 991aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1436 SV * out_fh
1437 SV * in_fh
1438 UV in_offset
1439 UV length
1440 SV * callback
1441 PROTOTYPE: $$$$;$ 992 PROTOTYPE: $$$$;$
1442 PPCODE: 993 PPCODE:
1443{ 994{
995 int ifd = s_fileno_croak (in_fh , 0);
996 int ofd = s_fileno_croak (out_fh, 1);
1444 dREQ; 997 dREQ;
1445 998
1446 req->type = REQ_SENDFILE; 999 req->type = EIO_SENDFILE;
1447 req->fh = newSVsv (out_fh); 1000 req->sv1 = newSVsv (out_fh);
1448 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1001 req->int1 = ofd;
1449 req->sv2 = newSVsv (in_fh); 1002 req->sv2 = newSVsv (in_fh);
1450 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1003 req->int2 = ifd;
1451 req->offs = in_offset; 1004 req->offs = in_offset;
1452 req->size = length; 1005 req->size = length;
1453 1006
1454 REQ_SEND; 1007 REQ_SEND;
1455} 1008}
1456 1009
1457void 1010void
1458aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1011aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1459 SV * fh
1460 UV offset
1461 IV length
1462 SV * callback
1463 PROTOTYPE: $$$;$ 1012 PROTOTYPE: $$$;$
1464 PPCODE: 1013 PPCODE:
1465{ 1014{
1015 int fd = s_fileno_croak (fh, 0);
1466 dREQ; 1016 dREQ;
1467 1017
1468 req->type = REQ_READAHEAD; 1018 req->type = EIO_READAHEAD;
1469 req->fh = newSVsv (fh); 1019 req->sv1 = newSVsv (fh);
1470 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1020 req->int1 = fd;
1471 req->offs = offset; 1021 req->offs = offset;
1472 req->size = length; 1022 req->size = length;
1473 1023
1474 REQ_SEND; 1024 REQ_SEND;
1475} 1025}
1476 1026
1477void 1027void
1478aio_stat (fh_or_path,callback=&PL_sv_undef) 1028aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479 SV * fh_or_path
1480 SV * callback
1481 ALIAS: 1029 ALIAS:
1482 aio_stat = REQ_STAT 1030 aio_stat = EIO_STAT
1483 aio_lstat = REQ_LSTAT 1031 aio_lstat = EIO_LSTAT
1032 aio_statvfs = EIO_STATVFS
1484 PPCODE: 1033 PPCODE:
1485{ 1034{
1486 dREQ; 1035 dREQ;
1487 1036
1488 New (0, req->statdata, 1, Stat_t); 1037 req->sv1 = newSVsv (fh_or_path);
1489 if (!req->statdata)
1490 {
1491 req_free (req);
1492 croak ("out of memory during aio_req->statdata allocation");
1493 }
1494 1038
1495 if (SvPOK (fh_or_path)) 1039 if (SvPOK (req->sv1))
1496 { 1040 {
1497 req->type = ix; 1041 req->type = ix;
1498 req->sv1 = newSVsv (fh_or_path);
1499 req->ptr1 = SvPVbyte_nolen (fh_or_path); 1042 req->ptr1 = SvPVbyte_nolen (req->sv1);
1500 } 1043 }
1501 else 1044 else
1502 { 1045 {
1503 req->type = REQ_FSTAT; 1046 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1504 req->fh = newSVsv (fh_or_path);
1505 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1047 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506 } 1048 }
1507 1049
1508 REQ_SEND; 1050 REQ_SEND;
1509} 1051}
1510 1052
1511void 1053void
1054aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1055 PPCODE:
1056{
1057 dREQ;
1058
1059 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1060 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1061 req->sv1 = newSVsv (fh_or_path);
1062
1063 if (SvPOK (req->sv1))
1064 {
1065 req->type = EIO_UTIME;
1066 req->ptr1 = SvPVbyte_nolen (req->sv1);
1067 }
1068 else
1069 {
1070 req->type = EIO_FUTIME;
1071 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1072 }
1073
1074 REQ_SEND;
1075}
1076
1077void
1078aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1079 PPCODE:
1080{
1081 dREQ;
1082
1083 req->sv1 = newSVsv (fh_or_path);
1084 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1085
1086 if (SvPOK (req->sv1))
1087 {
1088 req->type = EIO_TRUNCATE;
1089 req->ptr1 = SvPVbyte_nolen (req->sv1);
1090 }
1091 else
1092 {
1093 req->type = EIO_FTRUNCATE;
1094 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1095 }
1096
1097 REQ_SEND;
1098}
1099
1100void
1101aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1102 ALIAS:
1103 aio_chmod = EIO_CHMOD
1104 aio_mkdir = EIO_MKDIR
1105 PPCODE:
1106{
1107 dREQ;
1108
1109 req->int2 = mode;
1110 req->sv1 = newSVsv (fh_or_path);
1111
1112 if (SvPOK (req->sv1))
1113 {
1114 req->type = ix;
1115 req->ptr1 = SvPVbyte_nolen (req->sv1);
1116 }
1117 else
1118 {
1119 req->type = EIO_FCHMOD;
1120 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1121 }
1122
1123 REQ_SEND;
1124}
1125
1126void
1127aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1128 PPCODE:
1129{
1130 dREQ;
1131
1132 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1133 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1134 req->sv1 = newSVsv (fh_or_path);
1135
1136 if (SvPOK (req->sv1))
1137 {
1138 req->type = EIO_CHOWN;
1139 req->ptr1 = SvPVbyte_nolen (req->sv1);
1140 }
1141 else
1142 {
1143 req->type = EIO_FCHOWN;
1144 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1145 }
1146
1147 REQ_SEND;
1148}
1149
1150void
1151aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1152 PPCODE:
1153{
1154 dREQ;
1155
1156 req->type = EIO_READDIR;
1157 req->sv1 = newSVsv (pathname);
1158 req->ptr1 = SvPVbyte_nolen (req->sv1);
1159 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1160
1161 if (flags & EIO_READDIR_DENTS)
1162 req->int1 |= EIO_READDIR_CUSTOM2;
1163
1164 REQ_SEND;
1165}
1166
1167void
1512aio_unlink (pathname,callback=&PL_sv_undef) 1168aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513 SV * pathname
1514 SV * callback
1515 ALIAS: 1169 ALIAS:
1516 aio_unlink = REQ_UNLINK 1170 aio_unlink = EIO_UNLINK
1517 aio_rmdir = REQ_RMDIR 1171 aio_rmdir = EIO_RMDIR
1518 aio_readdir = REQ_READDIR 1172 aio_readdir = EIO_READDIR
1519 PPCODE: 1173 PPCODE:
1520{ 1174{
1521 dREQ; 1175 dREQ;
1522 1176
1523 req->type = ix; 1177 req->type = ix;
1524 req->sv1 = newSVsv (pathname); 1178 req->sv1 = newSVsv (pathname);
1525 req->ptr1 = SvPVbyte_nolen (pathname); 1179 req->ptr1 = SvPVbyte_nolen (req->sv1);
1526 1180
1527 REQ_SEND; 1181 REQ_SEND;
1528} 1182}
1529 1183
1530void 1184void
1531aio_link (oldpath,newpath,callback=&PL_sv_undef) 1185aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532 SV * oldpath
1533 SV * newpath
1534 SV * callback
1535 ALIAS: 1186 ALIAS:
1536 aio_link = REQ_LINK 1187 aio_link = EIO_LINK
1537 aio_symlink = REQ_SYMLINK 1188 aio_symlink = EIO_SYMLINK
1538 aio_rename = REQ_RENAME 1189 aio_rename = EIO_RENAME
1539 PPCODE: 1190 PPCODE:
1540{ 1191{
1541 dREQ; 1192 dREQ;
1542 1193
1543 req->type = ix; 1194 req->type = ix;
1544 req->fh = newSVsv (oldpath); 1195 req->sv1 = newSVsv (oldpath);
1545 req->ptr2 = SvPVbyte_nolen (req->fh); 1196 req->ptr1 = SvPVbyte_nolen (req->sv1);
1546 req->sv1 = newSVsv (newpath); 1197 req->sv2 = newSVsv (newpath);
1547 req->ptr1 = SvPVbyte_nolen (newpath); 1198 req->ptr2 = SvPVbyte_nolen (req->sv2);
1548 1199
1549 REQ_SEND; 1200 REQ_SEND;
1550} 1201}
1551 1202
1552void 1203void
1553aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1204aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554 SV * pathname
1555 SV * callback
1556 UV mode
1557 UV dev
1558 PPCODE: 1205 PPCODE:
1559{ 1206{
1560 dREQ; 1207 dREQ;
1561 1208
1562 req->type = REQ_MKNOD; 1209 req->type = EIO_MKNOD;
1563 req->sv1 = newSVsv (pathname); 1210 req->sv1 = newSVsv (pathname);
1564 req->ptr1 = SvPVbyte_nolen (pathname); 1211 req->ptr1 = SvPVbyte_nolen (req->sv1);
1565 req->mode = (mode_t)mode; 1212 req->int2 = (mode_t)mode;
1566 req->offs = dev; 1213 req->offs = dev;
1567 1214
1568 REQ_SEND; 1215 REQ_SEND;
1569} 1216}
1570 1217
1571void 1218void
1219aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1220 ALIAS:
1221 aio_mtouch = EIO_MTOUCH
1222 aio_msync = EIO_MSYNC
1223 PROTOTYPE: $$$$;$
1224 PPCODE:
1225{
1226 STRLEN svlen;
1227 UV len = SvUV (length);
1228 char *svptr = SvPVbyte (data, svlen);
1229
1230 if (offset < 0)
1231 offset += svlen;
1232
1233 if (offset < 0 || offset > svlen)
1234 croak ("offset outside of scalar");
1235
1236 if (!SvOK (length) || len + offset > svlen)
1237 len = svlen - offset;
1238
1239 {
1240 dREQ;
1241
1242 req->type = ix;
1243 req->size = len;
1244 req->sv2 = SvREFCNT_inc (data);
1245 req->ptr2 = (char *)svptr + offset;
1246 req->int1 = flags;
1247
1248 REQ_SEND;
1249 }
1250}
1251
1252void
1572aio_busy (delay,callback=&PL_sv_undef) 1253aio_busy (double delay, SV *callback=&PL_sv_undef)
1573 double delay
1574 SV * callback
1575 PPCODE: 1254 PPCODE:
1576{ 1255{
1577 dREQ; 1256 dREQ;
1578 1257
1579 req->type = REQ_BUSY; 1258 req->type = EIO_BUSY;
1580 req->int1 = delay < 0. ? 0 : delay; 1259 req->nv1 = delay < 0. ? 0. : delay;
1581 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582 1260
1583 REQ_SEND; 1261 REQ_SEND;
1584} 1262}
1585 1263
1586void 1264void
1587aio_group (callback=&PL_sv_undef) 1265aio_group (SV *callback=&PL_sv_undef)
1588 SV * callback
1589 PROTOTYPE: ;$ 1266 PROTOTYPE: ;$
1590 PPCODE: 1267 PPCODE:
1591{ 1268{
1592 dREQ; 1269 dREQ;
1593 1270
1594 req->type = REQ_GROUP; 1271 req->type = EIO_GROUP;
1595 1272
1596 req_send (req); 1273 req_submit (req);
1597 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1274 XPUSHs (req_sv (req, aio_grp_stash));
1598} 1275}
1599 1276
1600void 1277void
1601aio_nop (callback=&PL_sv_undef) 1278aio_nop (SV *callback=&PL_sv_undef)
1602 SV * callback 1279 ALIAS:
1280 aio_nop = EIO_NOP
1281 aio_sync = EIO_SYNC
1603 PPCODE: 1282 PPCODE:
1604{ 1283{
1605 dREQ; 1284 dREQ;
1606 1285
1607 req->type = REQ_NOP; 1286 req->type = ix;
1608 1287
1609 REQ_SEND; 1288 REQ_SEND;
1610} 1289}
1611 1290
1612int 1291int
1613aioreq_pri (int pri = 0) 1292aioreq_pri (int pri = 0)
1614 PROTOTYPE: ;$ 1293 PROTOTYPE: ;$
1615 CODE: 1294 CODE:
1616 RETVAL = next_pri - PRI_BIAS; 1295 RETVAL = next_pri;
1617 if (items > 0) 1296 if (items > 0)
1618 { 1297 {
1619 if (pri < PRI_MIN) pri = PRI_MIN; 1298 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620 if (pri > PRI_MAX) pri = PRI_MAX; 1299 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621 next_pri = pri + PRI_BIAS; 1300 next_pri = pri;
1622 } 1301 }
1623 OUTPUT: 1302 OUTPUT:
1624 RETVAL 1303 RETVAL
1625 1304
1626void 1305void
1627aioreq_nice (int nice = 0) 1306aioreq_nice (int nice = 0)
1628 CODE: 1307 CODE:
1629 nice = next_pri - nice; 1308 nice = next_pri - nice;
1630 if (nice < PRI_MIN) nice = PRI_MIN; 1309 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631 if (nice > PRI_MAX) nice = PRI_MAX; 1310 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632 next_pri = nice + PRI_BIAS; 1311 next_pri = nice;
1633 1312
1634void 1313void
1635flush () 1314flush ()
1636 PROTOTYPE: 1315 PROTOTYPE:
1637 CODE: 1316 CODE:
1638 while (nreqs) 1317 while (eio_nreqs ())
1639 { 1318 {
1640 poll_wait (); 1319 poll_wait ();
1641 poll_cb (0); 1320 poll_cb ();
1642 } 1321 }
1643 1322
1644void 1323int
1645poll() 1324poll()
1646 PROTOTYPE: 1325 PROTOTYPE:
1647 CODE: 1326 CODE:
1648 if (nreqs)
1649 {
1650 poll_wait (); 1327 poll_wait ();
1651 poll_cb (0); 1328 RETVAL = poll_cb ();
1652 } 1329 OUTPUT:
1330 RETVAL
1653 1331
1654int 1332int
1655poll_fileno() 1333poll_fileno()
1656 PROTOTYPE: 1334 PROTOTYPE:
1657 CODE: 1335 CODE:
1658 RETVAL = respipe [0]; 1336 RETVAL = s_epipe_fd (&respipe);
1659 OUTPUT: 1337 OUTPUT:
1660 RETVAL 1338 RETVAL
1661 1339
1662int 1340int
1663poll_cb(...) 1341poll_cb(...)
1669 1347
1670void 1348void
1671poll_wait() 1349poll_wait()
1672 PROTOTYPE: 1350 PROTOTYPE:
1673 CODE: 1351 CODE:
1674 if (nreqs)
1675 poll_wait (); 1352 poll_wait ();
1676 1353
1677int 1354int
1678nreqs() 1355nreqs()
1679 PROTOTYPE: 1356 PROTOTYPE:
1680 CODE: 1357 CODE:
1681 RETVAL = nreqs; 1358 RETVAL = eio_nreqs ();
1682 OUTPUT: 1359 OUTPUT:
1683 RETVAL 1360 RETVAL
1684 1361
1685int 1362int
1686nready() 1363nready()
1687 PROTOTYPE: 1364 PROTOTYPE:
1688 CODE: 1365 CODE:
1689 RETVAL = get_nready (); 1366 RETVAL = eio_nready ();
1690 OUTPUT: 1367 OUTPUT:
1691 RETVAL 1368 RETVAL
1692 1369
1693int 1370int
1694npending() 1371npending()
1695 PROTOTYPE: 1372 PROTOTYPE:
1696 CODE: 1373 CODE:
1697 RETVAL = get_npending (); 1374 RETVAL = eio_npending ();
1698 OUTPUT: 1375 OUTPUT:
1699 RETVAL 1376 RETVAL
1700 1377
1701int 1378int
1702nthreads() 1379nthreads()
1703 PROTOTYPE: 1380 PROTOTYPE:
1704 CODE: 1381 CODE:
1705 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1382 RETVAL = eio_nthreads ();
1706 RETVAL = started;
1707 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708 OUTPUT: 1383 OUTPUT:
1709 RETVAL 1384 RETVAL
1710 1385
1386int
1387fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1388 PROTOTYPE: $$$$
1389 CODE:
1390#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1391 RETVAL = posix_fadvise (fh, offset, length, advice);
1392#else
1393 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1394#endif
1395 OUTPUT:
1396 RETVAL
1397
1398ssize_t
1399sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1400 PROTOTYPE: $$$$
1401 CODE:
1402 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1403 OUTPUT:
1404 RETVAL
1405
1406void
1407mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1408 PROTOTYPE: $$$$$;$
1409 PPCODE:
1410 sv_unmagic (scalar, MMAP_MAGIC);
1411{
1412 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1413 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1414 if (addr == (void *)-1)
1415 XSRETURN_NO;
1416
1417 sv_force_normal (scalar);
1418
1419 /* we store the length in mg_obj, as namlen is I32 :/ */
1420 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1421 ->mg_obj = (SV *)length;
1422
1423 SvUPGRADE (scalar, SVt_PV); /* nop... */
1424
1425 if (!(prot & PROT_WRITE))
1426 SvREADONLY_on (scalar);
1427
1428 if (SvLEN (scalar))
1429 Safefree (SvPVX (scalar));
1430
1431 SvPVX (scalar) = (char *)addr;
1432 SvCUR_set (scalar, length);
1433 SvLEN_set (scalar, 0);
1434 SvPOK_only (scalar);
1435
1436 XSRETURN_YES;
1437}
1438
1439void
1440munmap (SV *scalar)
1441 PROTOTYPE: $
1442 CODE:
1443 sv_unmagic (scalar, MMAP_MAGIC);
1444
1445int
1446madvise (SV *scalar, off_t offset, off_t length, IV advice)
1447 PROTOTYPE: $$$$
1448 CODE:
1449{
1450 char *addr = SvPV_nolen (scalar) + offset;
1451
1452 if (!SvOK (ST (2)))
1453 length = SvCUR (scalar) - offset;
1454
1455 if (addr >= SvEND (scalar) || length <= 0)
1456 XSRETURN_EMPTY;
1457
1458 #if _XOPEN_SOURCE >= 600 && !NO_MADVISE
1459 RETVAL = posix_madvise (addr, length, advice);
1460 #else
1461 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1462 #endif
1463}
1464 OUTPUT:
1465 RETVAL
1466
1467int
1468mlockall (int flags)
1469 PROTOTYPE: $
1470 CODE:
1471#if _POSIX_MEMLOCK
1472#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1473 extern int mallopt (int, int);
1474 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1475#endif
1476 mlockall (flags);
1477#else
1478 RETVAL = -1;
1479 errno = ENOSYS;
1480#endif
1481 OUTPUT:
1482 RETVAL
1483
1484int
1485munlockall ()
1486 PROTOTYPE:
1487 CODE:
1488#if _POSIX_MEMLOCK
1489 munlockall ();
1490#else
1491 RETVAL = -1;
1492 errno = ENOSYS;
1493#endif
1494 OUTPUT:
1495 RETVAL
1496
1497void _on_next_submit (SV *cb)
1498 CODE:
1499 SvREFCNT_dec (on_next_submit);
1500 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1501
1711PROTOTYPES: DISABLE 1502PROTOTYPES: DISABLE
1712 1503
1713MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1504MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714 1505
1715void 1506void
1716cancel (aio_req_ornot req) 1507cancel (aio_req_ornot req)
1717 CODE: 1508 CODE:
1718 req_cancel (req); 1509 eio_cancel (req);
1719 1510
1720void 1511void
1721cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1512cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722 CODE: 1513 PPCODE:
1514{
1515 if (GIMME_V != G_VOID)
1516 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1517
1518 if (items > 1)
1519 {
1520 SV *cb_cv =get_cb (callback);
1521
1723 SvREFCNT_dec (req->callback); 1522 SvREFCNT_dec (req->callback);
1724 req->callback = newSVsv (callback); 1523 req->callback = SvREFCNT_inc (cb_cv);
1524 }
1525}
1725 1526
1726MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1527MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727 1528
1728void 1529void
1729add (aio_req grp, ...) 1530add (aio_req grp, ...)
1730 PPCODE: 1531 PPCODE:
1731{ 1532{
1732 int i; 1533 int i;
1733 aio_req req;
1734 1534
1735 if (grp->int1 == 2) 1535 if (grp->int1 == 2)
1736 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1536 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737 1537
1738 for (i = 1; i < items; ++i ) 1538 for (i = 1; i < items; ++i )
1739 { 1539 {
1540 aio_req req;
1541
1740 if (GIMME_V != G_VOID) 1542 if (GIMME_V != G_VOID)
1741 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1543 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742 1544
1743 req = SvAIO_REQ (ST (i)); 1545 req = SvAIO_REQ (ST (i));
1744 1546
1745 if (req) 1547 if (req)
1746 { 1548 eio_grp_add (grp, req);
1747 ++grp->size;
1748 req->grp = grp;
1749
1750 req->grp_prev = 0;
1751 req->grp_next = grp->grp_first;
1752
1753 if (grp->grp_first)
1754 grp->grp_first->grp_prev = req;
1755
1756 grp->grp_first = req;
1757 }
1758 } 1549 }
1759} 1550}
1760 1551
1761void 1552void
1762cancel_subs (aio_req_ornot req) 1553cancel_subs (aio_req_ornot req)
1771 AV *av; 1562 AV *av;
1772 1563
1773 grp->errorno = errno; 1564 grp->errorno = errno;
1774 1565
1775 av = newAV (); 1566 av = newAV ();
1567 av_extend (av, items - 1);
1776 1568
1777 for (i = 1; i < items; ++i ) 1569 for (i = 1; i < items; ++i )
1778 av_push (av, newSVsv (ST (i))); 1570 av_push (av, newSVsv (ST (i)));
1779 1571
1780 SvREFCNT_dec (grp->sv1); 1572 SvREFCNT_dec (grp->sv1);
1787 grp->errorno = errorno; 1579 grp->errorno = errorno;
1788 1580
1789void 1581void
1790limit (aio_req grp, int limit) 1582limit (aio_req grp, int limit)
1791 CODE: 1583 CODE:
1792 grp->int2 = limit; 1584 eio_grp_limit (grp, limit);
1793 aio_grp_feed (grp);
1794 1585
1795void 1586void
1796feed (aio_req grp, SV *callback=&PL_sv_undef) 1587feed (aio_req grp, SV *callback=&PL_sv_undef)
1797 CODE: 1588 CODE:
1798{ 1589{
1799 SvREFCNT_dec (grp->sv2); 1590 SvREFCNT_dec (grp->sv2);
1800 grp->sv2 = newSVsv (callback); 1591 grp->sv2 = newSVsv (callback);
1592 grp->feed = aio_grp_feed;
1801 1593
1802 if (grp->int2 <= 0) 1594 if (grp->int2 <= 0)
1803 grp->int2 = 2; 1595 grp->int2 = 2;
1804 1596
1805 aio_grp_feed (grp); 1597 eio_grp_limit (grp, grp->int2);
1806} 1598}
1807 1599

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