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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.167 by root, Sun May 9 20:49:52 2010 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
5#include <sys/types.h> 14#include <sys/types.h>
6#include <sys/stat.h> 15#include <sys/stat.h>
16#include <sys/statvfs.h>
7#include <unistd.h> 17#include <limits.h>
8#include <fcntl.h> 18#include <fcntl.h>
9#include <signal.h>
10#include <sched.h> 19#include <sched.h>
11 20
12#include <pthread.h> 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
13#include <sys/syscall.h> 22# include <sys/mman.h>
23#endif
14 24
15typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25/* perl namespace pollution */
16typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26#undef VERSION
17typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
18 27
19#if __ia64 28#ifdef _WIN32
20# define STACKSIZE 65536 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
21#else 66#else
22# define STACKSIZE 4096 67
68# include <sys/time.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 ST_NODEV
146# define ST_NODEV 0
147#endif
148#ifndef ST_NOEXEC
149# define ST_NOEXEC 0
150#endif
151#ifndef ST_SYNCHRONOUS
152# define ST_SYNCHRONOUS 0
153#endif
154#ifndef ST_MANDLOCK
155# define ST_MANDLOCK 0
156#endif
157#ifndef ST_WRITE
158# define ST_WRITE 0
159#endif
160#ifndef ST_APPEND
161# define ST_APPEND 0
162#endif
163#ifndef ST_IMMUTABLE
164# define ST_IMMUTABLE 0
165#endif
166#ifndef ST_NOATIME
167# define ST_NOATIME 0
168#endif
169#ifndef ST_NODIRATIME
170# define ST_NODIRATIME 0
171#endif
172#ifndef ST_RELATIME
173# define ST_RELATIME 0
174#endif
175
176#ifndef MCL_CURRENT
177# define MCL_CURRENT 0
178#endif
179#ifndef MCL_FUTURE
180# define MCL_FUTURE 0
181#endif
182
183#ifndef MAP_ANONYMOUS
184# ifdef MAP_ANON
185# define MAP_ANONYMOUS MAP_ANON
186# else
187# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
23#endif 188# endif
189#endif
190#ifndef MAP_HUGETLB
191# define MAP_HUGETLB 0
192#endif
193#ifndef MAP_LOCKED
194# define MAP_LOCKED 0
195#endif
196#ifndef MAP_NORESERVE
197# define MAP_NORESERVE 0
198#endif
199#ifndef MAP_POPULATE
200# define MAP_POPULATE 0
201#endif
202#ifndef MAP_NONBLOCK
203# define MAP_NONBLOCK 0
204#endif
205
206#ifndef PAGESIZE
207# define PAGESIZE sysconf (_SC_PAGESIZE)
208#endif
209
210static int req_invoke (eio_req *req);
211#define EIO_FINISH(req) req_invoke (req)
212static void req_destroy (eio_req *grp);
213#define EIO_DESTROY(req) req_destroy (req)
24 214
25enum { 215enum {
26 REQ_QUIT, 216 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
27 REQ_OPEN, REQ_CLOSE,
28 REQ_READ, REQ_WRITE, REQ_READAHEAD,
29 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
30 REQ_FSYNC, REQ_FDATASYNC,
31}; 217};
32 218
33typedef struct aio_cb { 219#include "libeio/eio.c"
34 struct aio_cb *volatile next;
35 220
36 int type;
37
38 int fd;
39 off_t offset;
40 size_t length;
41 ssize_t result;
42 mode_t mode; /* open */
43 int errorno;
44 SV *data, *callback;
45 void *dataptr;
46 STRLEN dataoffset;
47
48 Stat_t *statdata;
49} aio_cb;
50
51typedef aio_cb *aio_req; 221typedef eio_req *aio_req;
222typedef eio_req *aio_req_ornot;
52 223
53static int started; 224static SV *on_next_submit;
54static int nreqs; 225static int next_pri = EIO_PRI_DEFAULT;
55static int max_outstanding = 1<<30; 226static int max_outstanding;
56static int respipe [2];
57 227
58static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 228static s_epipe respipe;
59static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61 229
62static volatile aio_req reqs, reqe; /* queue start, queue end */ 230static void req_destroy (aio_req req);
63static volatile aio_req ress, rese; /* queue start, queue end */ 231static void req_cancel (aio_req req);
64 232
65static void 233static void want_poll (void)
66poll_wait ()
67{ 234{
68 if (!nreqs) 235 /* write a dummy byte to the pipe so fh becomes ready */
69 return; 236 s_epipe_signal (&respipe);
70
71 fd_set rfd;
72 FD_ZERO(&rfd);
73 FD_SET(respipe [0], &rfd);
74
75 select (respipe [0] + 1, &rfd, 0, 0, 0);
76} 237}
77 238
78static int 239static void done_poll (void)
79poll_cb ()
80{ 240{
81 dSP;
82 int count = 0;
83 aio_req req;
84
85 {
86 /* read and signals sent by the worker threads */ 241 /* read any signals sent by the worker threads */
87 char buf [32]; 242 s_epipe_drain (&respipe);
88 while (read (respipe [0], buf, 32) > 0) 243}
89 ;
90 }
91 244
92 for (;;) 245/* must be called at most once */
246static SV *req_sv (aio_req req, HV *stash)
247{
248 if (!req->self)
93 { 249 {
94 pthread_mutex_lock (&reslock); 250 req->self = (SV *)newHV ();
251 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
252 }
95 253
96 req = ress; 254 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
255}
97 256
98 if (ress) 257static aio_req SvAIO_REQ (SV *sv)
258{
259 MAGIC *mg;
260
261 if (!SvROK (sv)
262 || (SvSTASH (SvRV (sv)) != aio_grp_stash
263 && SvSTASH (SvRV (sv)) != aio_req_stash
264 && !sv_derived_from (sv, "IO::AIO::REQ")))
265 croak ("object of class IO::AIO::REQ expected");
266
267 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
268
269 return mg ? (aio_req)mg->mg_ptr : 0;
270}
271
272static void aio_grp_feed (aio_req grp)
273{
274 if (grp->sv2 && SvOK (grp->sv2))
275 {
276 dSP;
277
278 ENTER;
279 SAVETMPS;
280 PUSHMARK (SP);
281 XPUSHs (req_sv (grp, aio_grp_stash));
282 PUTBACK;
283 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
284 SPAGAIN;
285 FREETMPS;
286 LEAVE;
287 }
288}
289
290static void req_submit (eio_req *req)
291{
292 eio_submit (req);
293
294 if (expect_false (on_next_submit))
295 {
296 dSP;
297 SV *cb = sv_2mortal (on_next_submit);
298
299 on_next_submit = 0;
300
301 PUSHMARK (SP);
302 PUTBACK;
303 call_sv (cb, G_DISCARD | G_EVAL);
304 }
305}
306
307static int req_invoke (eio_req *req)
308{
309 if (req->flags & FLAG_SV2_RO_OFF)
310 SvREADONLY_off (req->sv2);
311
312 if (!EIO_CANCELLED (req) && req->callback)
313 {
314 dSP;
315 static SV *sv_result_cache; /* caches the result integer SV */
316 SV *sv_result;
317
318 ENTER;
319 SAVETMPS;
320 PUSHMARK (SP);
321 EXTEND (SP, 1);
322
323 /* do not recreate the result IV from scratch each time */
324 if (expect_true (sv_result_cache))
99 { 325 {
100 ress = ress->next; 326 sv_result = sv_result_cache; sv_result_cache = 0;
101 if (!ress) rese = 0; 327 SvIV_set (sv_result, req->result);
102 }
103
104 pthread_mutex_unlock (&reslock);
105
106 if (!req)
107 break;
108
109 nreqs--;
110
111 if (req->type == REQ_QUIT)
112 started--;
113 else
114 {
115 int errorno = errno;
116 errno = req->errorno;
117
118 if (req->type == REQ_READ)
119 SvCUR_set (req->data, req->dataoffset
120 + req->result > 0 ? req->result : 0);
121
122 if (req->data)
123 SvREFCNT_dec (req->data);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 PUSHMARK (SP);
135 XPUSHs (sv_2mortal (newSViv (req->result)));
136
137 if (req->type == REQ_OPEN)
138 {
139 /* convert fd to fh */
140 SV *fh;
141
142 PUTBACK;
143 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
144 SPAGAIN;
145
146 fh = POPs;
147
148 PUSHMARK (SP);
149 XPUSHs (fh);
150 }
151
152 if (SvOK (req->callback))
153 {
154 PUTBACK;
155 call_sv (req->callback, G_VOID | G_EVAL);
156 SPAGAIN;
157 }
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno;
163 count++;
164 }
165
166 Safefree (req);
167 }
168
169 return count;
170}
171
172static void *aio_proc(void *arg);
173
174static void
175start_thread (void)
176{
177 sigset_t fullsigset, oldsigset;
178 pthread_t tid;
179 pthread_attr_t attr;
180
181 pthread_attr_init (&attr);
182 pthread_attr_setstacksize (&attr, STACKSIZE);
183 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
184
185 sigfillset (&fullsigset);
186 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
187
188 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
189 started++;
190
191 sigprocmask (SIG_SETMASK, &oldsigset, 0);
192}
193
194static void
195send_req (aio_req req)
196{
197 nreqs++;
198
199 pthread_mutex_lock (&reqlock);
200
201 req->next = 0;
202
203 if (reqe)
204 {
205 reqe->next = req;
206 reqe = req;
207 }
208 else
209 reqe = reqs = req;
210
211 pthread_cond_signal (&reqwait);
212 pthread_mutex_unlock (&reqlock);
213
214 while (nreqs > max_outstanding)
215 {
216 poll_wait ();
217 poll_cb ();
218 }
219}
220
221static void
222end_thread (void)
223{
224 aio_req req;
225 New (0, req, 1, aio_cb);
226 req->type = REQ_QUIT;
227
228 send_req (req);
229}
230
231static void
232read_write (int dowrite, int fd, off_t offset, size_t length,
233 SV *data, STRLEN dataoffset, SV *callback)
234{
235 aio_req req;
236 STRLEN svlen;
237 char *svptr = SvPV (data, svlen);
238
239 SvUPGRADE (data, SVt_PV);
240 SvPOK_on (data);
241
242 if (dataoffset < 0)
243 dataoffset += svlen;
244
245 if (dataoffset < 0 || dataoffset > svlen)
246 croak ("data offset outside of string");
247
248 if (dowrite)
249 {
250 /* write: check length and adjust. */
251 if (length < 0 || length + dataoffset > svlen)
252 length = svlen - dataoffset;
253 }
254 else
255 {
256 /* read: grow scalar as necessary */
257 svptr = SvGROW (data, length + dataoffset);
258 }
259
260 if (length < 0)
261 croak ("length must not be negative");
262
263 Newz (0, req, 1, aio_cb);
264
265 if (!req)
266 croak ("out of memory during aio_req allocation");
267
268 req->type = dowrite ? REQ_WRITE : REQ_READ;
269 req->fd = fd;
270 req->offset = offset;
271 req->length = length;
272 req->data = SvREFCNT_inc (data);
273 req->dataptr = (char *)svptr + dataoffset;
274 req->callback = SvREFCNT_inc (callback);
275
276 send_req (req);
277}
278
279static void *
280aio_proc (void *thr_arg)
281{
282 aio_req req;
283 int type;
284
285 do
286 {
287 pthread_mutex_lock (&reqlock);
288
289 for (;;)
290 {
291 req = reqs;
292
293 if (reqs)
294 {
295 reqs = reqs->next;
296 if (!reqs) reqe = 0;
297 }
298
299 if (req)
300 break;
301
302 pthread_cond_wait (&reqwait, &reqlock);
303 }
304
305 pthread_mutex_unlock (&reqlock);
306
307 errno = 0; /* strictly unnecessary */
308
309 type = req->type;
310
311 switch (type)
312 {
313 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
314 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
315#if SYS_readahead
316 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
317#else
318 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319#endif
320
321 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324
325 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
326 case REQ_CLOSE: req->result = close (req->fd); break;
327 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
328
329 case REQ_FSYNC: req->result = fsync (req->fd); break;
330 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331
332 case REQ_QUIT:
333 break;
334
335 default:
336 req->result = ENOSYS;
337 break;
338 }
339
340 req->errorno = errno;
341
342 pthread_mutex_lock (&reslock);
343
344 req->next = 0;
345
346 if (rese)
347 {
348 rese->next = req;
349 rese = req;
350 } 328 }
351 else 329 else
352 { 330 {
353 rese = ress = req; 331 sv_result = newSViv (req->result);
354 332 SvREADONLY_on (sv_result);
355 /* write a dummy byte to the pipe so fh becomes ready */
356 write (respipe [1], &respipe, 1);
357 } 333 }
358 334
359 pthread_mutex_unlock (&reslock); 335 switch (req->type)
336 {
337 case EIO_READDIR:
338 {
339 SV *rv = &PL_sv_undef;
340
341 if (req->result >= 0)
342 {
343 int i;
344 char *names = (char *)req->ptr2;
345 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
346 AV *av = newAV ();
347
348 av_extend (av, req->result - 1);
349
350 for (i = 0; i < req->result; ++i)
351 {
352 if (req->int1 & EIO_READDIR_DENTS)
353 {
354 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
355
356 if (req->int1 & EIO_READDIR_CUSTOM2)
357 {
358 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
359 AV *avent = newAV ();
360
361 av_extend (avent, 2);
362
363 if (!sv_type [ent->type])
364 {
365 sv_type [ent->type] = newSViv (ent->type);
366 SvREADONLY_on (sv_type [ent->type]);
367 }
368
369 av_store (avent, 0, namesv);
370 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
371 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
372
373 av_store (av, i, newRV_noinc ((SV *)avent));
374 }
375 else
376 av_store (av, i, namesv);
377
378 ++ent;
379 }
380 else
381 {
382 SV *name = newSVpv (names, 0);
383 av_store (av, i, name);
384 names += SvCUR (name) + 1;
385 }
386 }
387
388 rv = sv_2mortal (newRV_noinc ((SV *)av));
389 }
390
391 PUSHs (rv);
392
393 if (req->int1 & EIO_READDIR_CUSTOM1)
394 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
395 }
396 break;
397
398 case EIO_OPEN:
399 {
400 /* convert fd to fh */
401 SV *fh = &PL_sv_undef;
402
403 if (req->result >= 0)
404 {
405 GV *gv = (GV *)sv_newmortal ();
406 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
407 char sym [64];
408 int symlen;
409
410 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
411 gv_init (gv, aio_stash, sym, symlen, 0);
412
413 symlen = snprintf (
414 sym,
415 sizeof (sym),
416 "%s&=%d",
417 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
418 (int)req->result
419 );
420
421 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
422 fh = (SV *)gv;
423 }
424
425 PUSHs (fh);
426 }
427 break;
428
429 case EIO_STATVFS:
430 case EIO_FSTATVFS:
431 {
432 SV *rv = &PL_sv_undef;
433
434 if (req->result >= 0)
435 {
436 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
437 HV *hv = newHV ();
438
439 rv = sv_2mortal (newRV_noinc ((SV *)hv));
440
441 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
442 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
443 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
444 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
445 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
446 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
447 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
448 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
449 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
450 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
451 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
452 }
453
454 PUSHs (rv);
455 }
456
457 break;
458
459 case EIO_GROUP:
460 req->int1 = 2; /* mark group as finished */
461
462 if (req->sv1)
463 {
464 int i;
465 AV *av = (AV *)req->sv1;
466
467 EXTEND (SP, AvFILL (av) + 1);
468 for (i = 0; i <= AvFILL (av); ++i)
469 PUSHs (*av_fetch (av, i, 0));
470 }
471 break;
472
473 case EIO_NOP:
474 case EIO_BUSY:
475 break;
476
477 case EIO_READLINK:
478 if (req->result > 0)
479 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480 break;
481
482 case EIO_STAT:
483 case EIO_LSTAT:
484 case EIO_FSTAT:
485 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
486 PL_laststatval = req->result;
487 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
488 PUSHs (sv_result);
489 break;
490
491 case EIO_READ:
492 {
493 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
494 *SvEND (req->sv2) = 0;
495 SvPOK_only (req->sv2);
496 SvSETMAGIC (req->sv2);
497 PUSHs (sv_result);
498 }
499 break;
500
501 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
502 if (req->result > 0)
503 SvIV_set (sv_result, 0);
504 /* FALLTHROUGH */
505
506 default:
507 PUSHs (sv_result);
508 break;
509 }
510
511 errno = req->errorno;
512
513 PUTBACK;
514 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
515 SPAGAIN;
516
517 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
518 SvREFCNT_dec (sv_result);
519 else
520 sv_result_cache = sv_result;
521
522 FREETMPS;
523 LEAVE;
524
525 PUTBACK;
360 } 526 }
361 while (type != REQ_QUIT); 527
528 return !!SvTRUE (ERRSV);
529}
530
531static void req_destroy (aio_req req)
532{
533 if (req->self)
534 {
535 sv_unmagic (req->self, PERL_MAGIC_ext);
536 SvREFCNT_dec (req->self);
537 }
538
539 SvREFCNT_dec (req->sv1);
540 SvREFCNT_dec (req->sv2);
541 SvREFCNT_dec (req->callback);
542
543 Safefree (req);
544}
545
546static void req_cancel_subs (aio_req grp)
547{
548 aio_req sub;
549
550 if (grp->type != EIO_GROUP)
551 return;
552
553 SvREFCNT_dec (grp->sv2);
554 grp->sv2 = 0;
555
556 eio_grp_cancel (grp);
557}
558
559static void
560create_respipe (void)
561{
562 if (s_epipe_renew (&respipe))
563 croak ("IO::AIO: unable to initialize result pipe");
564}
565
566static void poll_wait (void)
567{
568 while (eio_nreqs ())
569 {
570 int size;
571
572 X_LOCK (reslock);
573 size = res_queue.size;
574 X_UNLOCK (reslock);
575
576 if (size)
577 return;
578
579 etp_maybe_start_thread ();
580
581 s_epipe_wait (&respipe);
582 }
583}
584
585static int poll_cb (void)
586{
587 for (;;)
588 {
589 int res = eio_poll ();
590
591 if (res > 0)
592 croak (0);
593
594 if (!max_outstanding || max_outstanding > eio_nreqs ())
595 return res;
596
597 poll_wait ();
598 }
599}
600
601static void atfork_child (void)
602{
603 create_respipe ();
604}
605
606/*****************************************************************************/
607
608#if !_POSIX_MAPPED_FILES
609# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
610# define munmap(addr,length) (errno = ENOSYS, -1)
611#endif
612
613#define MMAP_MAGIC PERL_MAGIC_ext
614
615static int
616mmap_free (pTHX_ SV *sv, MAGIC *mg)
617{
618 int old_errno = errno;
619 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
620 errno = old_errno;
621
622 mg->mg_obj = 0; /* just in case */
623
624 SvREADONLY_off (sv);
625 SvCUR_set (sv, 0);
626 SvLEN_set (sv, 0);
627 SvPVX (sv) = 0;
628 SvOK_off (sv);
362 629
363 return 0; 630 return 0;
364} 631}
365 632
633static MGVTBL mmap_vtbl = {
634 0, 0, 0, 0, mmap_free
635};
636
637/*****************************************************************************/
638
639static SV *
640get_cb (SV *cb_sv)
641{
642 SvGETMAGIC (cb_sv);
643 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
644}
645
646#define dREQ \
647 SV *cb_cv; \
648 aio_req req; \
649 int req_pri = next_pri; \
650 next_pri = EIO_PRI_DEFAULT; \
651 \
652 cb_cv = get_cb (callback); \
653 \
654 Newz (0, req, 1, eio_req); \
655 if (!req) \
656 croak ("out of memory during eio_req allocation"); \
657 \
658 req->callback = SvREFCNT_inc (cb_cv); \
659 req->pri = req_pri
660
661#define REQ_SEND \
662 PUTBACK; \
663 req_submit (req); \
664 SPAGAIN; \
665 \
666 if (GIMME_V != G_VOID) \
667 XPUSHs (req_sv (req, aio_req_stash));
668
366MODULE = IO::AIO PACKAGE = IO::AIO 669MODULE = IO::AIO PACKAGE = IO::AIO
367 670
368PROTOTYPES: ENABLE 671PROTOTYPES: ENABLE
369 672
370BOOT: 673BOOT:
371{ 674{
372 if (pipe (respipe)) 675 static const struct {
373 croak ("unable to initialize result pipe"); 676 const char *name;
677 IV iv;
678 } *civ, const_iv[] = {
679# define const_niv(name, value) { # name, (IV) value },
680# define const_iv(name) { # name, (IV) name },
681# define const_eio(name) { # name, (IV) EIO_ ## name },
682 const_iv (EXDEV)
683 const_iv (ENOSYS)
684 const_iv (O_RDONLY)
685 const_iv (O_WRONLY)
686 const_iv (O_RDWR)
687 const_iv (O_CREAT)
688 const_iv (O_TRUNC)
689 const_iv (O_EXCL)
690 const_iv (O_APPEND)
691#ifndef _WIN32
692 const_iv (S_IFIFO)
693#endif
694 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
695 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
696 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
697 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
698 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
699 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
374 700
375 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 701 const_iv (ST_RDONLY)
376 croak ("cannot set result pipe to nonblocking mode"); 702 const_iv (ST_NOSUID)
703 const_iv (ST_NODEV)
704 const_iv (ST_NOEXEC)
705 const_iv (ST_SYNCHRONOUS)
706 const_iv (ST_MANDLOCK)
707 const_iv (ST_WRITE)
708 const_iv (ST_APPEND)
709 const_iv (ST_IMMUTABLE)
710 const_iv (ST_NOATIME)
711 const_iv (ST_NODIRATIME)
712 const_iv (ST_RELATIME)
377 713
378 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 714 const_iv (PROT_EXEC)
379 croak ("cannot set result pipe to nonblocking mode"); 715 const_iv (PROT_NONE)
380} 716 const_iv (PROT_READ)
717 const_iv (PROT_WRITE)
381 718
719 /*const_iv (MAP_FIXED)*/
720 const_iv (MAP_PRIVATE)
721 const_iv (MAP_SHARED)
722 const_iv (MAP_ANONYMOUS)
723
724 /* linuxish */
725 const_iv (MAP_HUGETLB)
726 const_iv (MAP_LOCKED)
727 const_iv (MAP_NORESERVE)
728 const_iv (MAP_POPULATE)
729 const_iv (MAP_NONBLOCK)
730
731 const_iv (MCL_FUTURE)
732 const_iv (MCL_CURRENT)
733
734 const_eio (MS_ASYNC)
735 const_eio (MS_INVALIDATE)
736 const_eio (MS_SYNC)
737
738 const_eio (MT_MODIFY)
739
740 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
741 const_eio (SYNC_FILE_RANGE_WRITE)
742 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
743
744 const_eio (READDIR_DENTS)
745 const_eio (READDIR_DIRS_FIRST)
746 const_eio (READDIR_STAT_ORDER)
747 const_eio (READDIR_FOUND_UNKNOWN)
748
749 const_eio (DT_UNKNOWN)
750 const_eio (DT_FIFO)
751 const_eio (DT_CHR)
752 const_eio (DT_DIR)
753 const_eio (DT_BLK)
754 const_eio (DT_REG)
755 const_eio (DT_LNK)
756 const_eio (DT_SOCK)
757 const_eio (DT_WHT)
758 };
759
760 aio_stash = gv_stashpv ("IO::AIO" , 1);
761 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
762 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
763
764 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
765 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
766
767 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
768
769 create_respipe ();
770
771 if (eio_init (want_poll, done_poll) < 0)
772 croak ("IO::AIO: unable to initialise eio library");
773
774 /* atfork child called in fifo order, so before eio's handler */
775 X_THREAD_ATFORK (0, 0, atfork_child);
776}
777
382void 778void
383min_parallel(nthreads) 779max_poll_reqs (int nreqs)
384 int nthreads
385 PROTOTYPE: $ 780 PROTOTYPE: $
386 CODE: 781 CODE:
387 while (nthreads > started) 782 eio_set_max_poll_reqs (nreqs);
388 start_thread ();
389 783
390void 784void
391max_parallel(nthreads) 785max_poll_time (double nseconds)
392 int nthreads
393 PROTOTYPE: $ 786 PROTOTYPE: $
394 CODE: 787 CODE:
788 eio_set_max_poll_time (nseconds);
789
790void
791min_parallel (int nthreads)
792 PROTOTYPE: $
793 CODE:
794 eio_set_min_parallel (nthreads);
795
796void
797max_parallel (int nthreads)
798 PROTOTYPE: $
799 CODE:
800 eio_set_max_parallel (nthreads);
801
802void
803max_idle (int nthreads)
804 PROTOTYPE: $
805 CODE:
806 eio_set_max_idle (nthreads);
807
808void
809max_outstanding (int maxreqs)
810 PROTOTYPE: $
811 CODE:
812 max_outstanding = maxreqs;
813
814void
815aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
816 PROTOTYPE: $$$;$
817 PPCODE:
395{ 818{
396 int cur = started; 819 dREQ;
397 while (cur > nthreads) 820
398 { 821 req->type = EIO_OPEN;
399 end_thread (); 822 req->sv1 = newSVsv (pathname);
400 cur--; 823 req->ptr1 = SvPVbyte_nolen (req->sv1);
824 req->int1 = flags;
825 req->int2 = mode;
826
827 REQ_SEND;
828}
829
830void
831aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
832 PROTOTYPE: $;$
833 ALIAS:
834 aio_fsync = EIO_FSYNC
835 aio_fdatasync = EIO_FDATASYNC
836 PPCODE:
837{
838 int fd = s_fileno_croak (fh, 0);
839 dREQ;
840
841 req->type = ix;
842 req->sv1 = newSVsv (fh);
843 req->int1 = fd;
844
845 REQ_SEND (req);
846}
847
848void
849aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
850 PROTOTYPE: $$$$;$
851 PPCODE:
852{
853 int fd = s_fileno_croak (fh, 0);
854 dREQ;
855
856 req->type = EIO_SYNC_FILE_RANGE;
857 req->sv1 = newSVsv (fh);
858 req->int1 = fd;
859 req->offs = offset;
860 req->size = nbytes;
861 req->int2 = flags;
862
863 REQ_SEND (req);
864}
865
866void
867aio_close (SV *fh, SV *callback=&PL_sv_undef)
868 PROTOTYPE: $;$
869 PPCODE:
870{
871 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
872 int fd = s_fileno_croak (fh, 0);
873 dREQ;
874
875 if (close_pipe < 0)
876 {
877 int pipefd [2];
878
879 if (pipe (pipefd) < 0
880 || close (pipefd [1]) < 0
881 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
882 abort (); /*D*/
883
884 close_pipe = pipefd [0];
401 } 885 }
402 886
403 while (started > nthreads) 887 req->type = EIO_DUP2;
888 req->int1 = close_pipe;
889 req->sv2 = newSVsv (fh);
890 req->int2 = fd;
891
892 REQ_SEND (req);
893}
894
895void
896aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
897 ALIAS:
898 aio_read = EIO_READ
899 aio_write = EIO_WRITE
900 PROTOTYPE: $$$$$;$
901 PPCODE:
902{
903 STRLEN svlen;
904 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
905 char *svptr = SvPVbyte (data, svlen);
906 UV len = SvUV (length);
907
908 if (dataoffset < 0)
909 dataoffset += svlen;
910
911 if (dataoffset < 0 || dataoffset > svlen)
912 croak ("dataoffset outside of data scalar");
913
914 if (ix == EIO_WRITE)
915 {
916 /* write: check length and adjust. */
917 if (!SvOK (length) || len + dataoffset > svlen)
918 len = svlen - dataoffset;
919 }
920 else
921 {
922 /* read: check type and grow scalar as necessary */
923 SvUPGRADE (data, SVt_PV);
924 svptr = SvGROW (data, len + dataoffset + 1);
925 }
926
927 {
928 dREQ;
929
930 req->type = ix;
931 req->sv1 = newSVsv (fh);
932 req->int1 = fd;
933 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
934 req->size = len;
935 req->sv2 = SvREFCNT_inc (data);
936 req->ptr2 = (char *)svptr + dataoffset;
937 req->stroffset = dataoffset;
938
939 if (!SvREADONLY (data))
940 {
941 SvREADONLY_on (data);
942 req->flags |= FLAG_SV2_RO_OFF;
943 }
944
945 REQ_SEND;
946 }
947}
948
949void
950aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
951 PROTOTYPE: $$;$
952 PPCODE:
953{
954 SV *data;
955 dREQ;
956
957 req->type = EIO_READLINK;
958 req->sv1 = newSVsv (path);
959 req->ptr1 = SvPVbyte_nolen (req->sv1);
960
961 REQ_SEND;
962}
963
964void
965aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
966 PROTOTYPE: $$$$;$
967 PPCODE:
968{
969 int ifd = s_fileno_croak (in_fh , 0);
970 int ofd = s_fileno_croak (out_fh, 1);
971 dREQ;
972
973 req->type = EIO_SENDFILE;
974 req->sv1 = newSVsv (out_fh);
975 req->int1 = ofd;
976 req->sv2 = newSVsv (in_fh);
977 req->int2 = ifd;
978 req->offs = in_offset;
979 req->size = length;
980
981 REQ_SEND;
982}
983
984void
985aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
986 PROTOTYPE: $$$;$
987 PPCODE:
988{
989 int fd = s_fileno_croak (fh, 0);
990 dREQ;
991
992 req->type = EIO_READAHEAD;
993 req->sv1 = newSVsv (fh);
994 req->int1 = fd;
995 req->offs = offset;
996 req->size = length;
997
998 REQ_SEND;
999}
1000
1001void
1002aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1003 ALIAS:
1004 aio_stat = EIO_STAT
1005 aio_lstat = EIO_LSTAT
1006 aio_statvfs = EIO_STATVFS
1007 PPCODE:
1008{
1009 dREQ;
1010
1011 req->sv1 = newSVsv (fh_or_path);
1012
1013 if (SvPOK (req->sv1))
1014 {
1015 req->type = ix;
1016 req->ptr1 = SvPVbyte_nolen (req->sv1);
1017 }
1018 else
1019 {
1020 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1021 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1022 }
1023
1024 REQ_SEND;
1025}
1026
1027void
1028aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1029 PPCODE:
1030{
1031 dREQ;
1032
1033 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1034 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1035 req->sv1 = newSVsv (fh_or_path);
1036
1037 if (SvPOK (req->sv1))
1038 {
1039 req->type = EIO_UTIME;
1040 req->ptr1 = SvPVbyte_nolen (req->sv1);
1041 }
1042 else
1043 {
1044 req->type = EIO_FUTIME;
1045 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1046 }
1047
1048 REQ_SEND;
1049}
1050
1051void
1052aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1053 PPCODE:
1054{
1055 dREQ;
1056
1057 req->sv1 = newSVsv (fh_or_path);
1058 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059
1060 if (SvPOK (req->sv1))
1061 {
1062 req->type = EIO_TRUNCATE;
1063 req->ptr1 = SvPVbyte_nolen (req->sv1);
1064 }
1065 else
1066 {
1067 req->type = EIO_FTRUNCATE;
1068 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1069 }
1070
1071 REQ_SEND;
1072}
1073
1074void
1075aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1076 ALIAS:
1077 aio_chmod = EIO_CHMOD
1078 aio_mkdir = EIO_MKDIR
1079 PPCODE:
1080{
1081 dREQ;
1082
1083 req->int2 = mode;
1084 req->sv1 = newSVsv (fh_or_path);
1085
1086 if (SvPOK (req->sv1))
1087 {
1088 req->type = ix;
1089 req->ptr1 = SvPVbyte_nolen (req->sv1);
1090 }
1091 else
1092 {
1093 req->type = EIO_FCHMOD;
1094 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1095 }
1096
1097 REQ_SEND;
1098}
1099
1100void
1101aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1102 PPCODE:
1103{
1104 dREQ;
1105
1106 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1107 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1108 req->sv1 = newSVsv (fh_or_path);
1109
1110 if (SvPOK (req->sv1))
1111 {
1112 req->type = EIO_CHOWN;
1113 req->ptr1 = SvPVbyte_nolen (req->sv1);
1114 }
1115 else
1116 {
1117 req->type = EIO_FCHOWN;
1118 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1119 }
1120
1121 REQ_SEND;
1122}
1123
1124void
1125aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1126 PPCODE:
1127{
1128 dREQ;
1129
1130 req->type = EIO_READDIR;
1131 req->sv1 = newSVsv (pathname);
1132 req->ptr1 = SvPVbyte_nolen (req->sv1);
1133 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1134
1135 if (flags & EIO_READDIR_DENTS)
1136 req->int1 |= EIO_READDIR_CUSTOM2;
1137
1138 REQ_SEND;
1139}
1140
1141void
1142aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1143 ALIAS:
1144 aio_unlink = EIO_UNLINK
1145 aio_rmdir = EIO_RMDIR
1146 aio_readdir = EIO_READDIR
1147 PPCODE:
1148{
1149 dREQ;
1150
1151 req->type = ix;
1152 req->sv1 = newSVsv (pathname);
1153 req->ptr1 = SvPVbyte_nolen (req->sv1);
1154
1155 REQ_SEND;
1156}
1157
1158void
1159aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1160 ALIAS:
1161 aio_link = EIO_LINK
1162 aio_symlink = EIO_SYMLINK
1163 aio_rename = EIO_RENAME
1164 PPCODE:
1165{
1166 dREQ;
1167
1168 req->type = ix;
1169 req->sv1 = newSVsv (oldpath);
1170 req->ptr1 = SvPVbyte_nolen (req->sv1);
1171 req->sv2 = newSVsv (newpath);
1172 req->ptr2 = SvPVbyte_nolen (req->sv2);
1173
1174 REQ_SEND;
1175}
1176
1177void
1178aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1179 PPCODE:
1180{
1181 dREQ;
1182
1183 req->type = EIO_MKNOD;
1184 req->sv1 = newSVsv (pathname);
1185 req->ptr1 = SvPVbyte_nolen (req->sv1);
1186 req->int2 = (mode_t)mode;
1187 req->offs = dev;
1188
1189 REQ_SEND;
1190}
1191
1192void
1193aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1194 ALIAS:
1195 aio_mtouch = EIO_MTOUCH
1196 aio_msync = EIO_MSYNC
1197 PROTOTYPE: $$$$;$
1198 PPCODE:
1199{
1200 STRLEN svlen;
1201 UV len = SvUV (length);
1202 char *svptr = SvPVbyte (data, svlen);
1203
1204 if (offset < 0)
1205 offset += svlen;
1206
1207 if (offset < 0 || offset > svlen)
1208 croak ("offset outside of scalar");
1209
1210 if (!SvOK (length) || len + offset > svlen)
1211 len = svlen - offset;
1212
1213 {
1214 dREQ;
1215
1216 req->type = ix;
1217 req->size = len;
1218 req->sv2 = SvREFCNT_inc (data);
1219 req->ptr2 = (char *)svptr + offset;
1220 req->int1 = flags;
1221
1222 REQ_SEND;
1223 }
1224}
1225
1226void
1227aio_busy (double delay, SV *callback=&PL_sv_undef)
1228 PPCODE:
1229{
1230 dREQ;
1231
1232 req->type = EIO_BUSY;
1233 req->nv1 = delay < 0. ? 0. : delay;
1234
1235 REQ_SEND;
1236}
1237
1238void
1239aio_group (SV *callback=&PL_sv_undef)
1240 PROTOTYPE: ;$
1241 PPCODE:
1242{
1243 dREQ;
1244
1245 req->type = EIO_GROUP;
1246
1247 req_submit (req);
1248 XPUSHs (req_sv (req, aio_grp_stash));
1249}
1250
1251void
1252aio_nop (SV *callback=&PL_sv_undef)
1253 ALIAS:
1254 aio_nop = EIO_NOP
1255 aio_sync = EIO_SYNC
1256 PPCODE:
1257{
1258 dREQ;
1259
1260 req->type = ix;
1261
1262 REQ_SEND;
1263}
1264
1265int
1266aioreq_pri (int pri = 0)
1267 PROTOTYPE: ;$
1268 CODE:
1269 RETVAL = next_pri;
1270 if (items > 0)
1271 {
1272 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1273 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1274 next_pri = pri;
1275 }
1276 OUTPUT:
1277 RETVAL
1278
1279void
1280aioreq_nice (int nice = 0)
1281 CODE:
1282 nice = next_pri - nice;
1283 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1284 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1285 next_pri = nice;
1286
1287void
1288flush ()
1289 PROTOTYPE:
1290 CODE:
1291 while (eio_nreqs ())
404 { 1292 {
405 poll_wait (); 1293 poll_wait ();
406 poll_cb (); 1294 poll_cb ();
407 } 1295 }
408}
409 1296
410int 1297int
411max_outstanding(nreqs)
412 int nreqs
413 PROTOTYPE: $
414 CODE:
415 RETVAL = max_outstanding;
416 max_outstanding = nreqs;
417
418void
419aio_open(pathname,flags,mode,callback=&PL_sv_undef)
420 SV * pathname
421 int flags
422 int mode
423 SV * callback
424 PROTOTYPE: $$$;$
425 CODE:
426{
427 aio_req req;
428
429 Newz (0, req, 1, aio_cb);
430
431 if (!req)
432 croak ("out of memory during aio_req allocation");
433
434 req->type = REQ_OPEN;
435 req->data = newSVsv (pathname);
436 req->dataptr = SvPV_nolen (req->data);
437 req->fd = flags;
438 req->mode = mode;
439 req->callback = SvREFCNT_inc (callback);
440
441 send_req (req);
442}
443
444void
445aio_close(fh,callback=&PL_sv_undef)
446 InputStream fh
447 SV * callback
448 PROTOTYPE: $;$
449 ALIAS:
450 aio_close = REQ_CLOSE
451 aio_fsync = REQ_FSYNC
452 aio_fdatasync = REQ_FDATASYNC
453 CODE:
454{
455 aio_req req;
456
457 Newz (0, req, 1, aio_cb);
458
459 if (!req)
460 croak ("out of memory during aio_req allocation");
461
462 req->type = ix;
463 req->fd = PerlIO_fileno (fh);
464 req->callback = SvREFCNT_inc (callback);
465
466 send_req (req);
467}
468
469void
470aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471 InputStream fh
472 UV offset
473 IV length
474 SV * data
475 IV dataoffset
476 SV * callback
477 PROTOTYPE: $$$$$;$
478 CODE:
479 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
480
481void
482aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
483 OutputStream fh
484 UV offset
485 IV length
486 SV * data
487 IV dataoffset
488 SV * callback
489 PROTOTYPE: $$$$$;$
490 CODE:
491 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
492
493void
494aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495 InputStream fh
496 UV offset
497 IV length
498 SV * callback
499 PROTOTYPE: $$$;$
500 CODE:
501{
502 aio_req req;
503
504 if (length < 0)
505 croak ("length must not be negative");
506
507 Newz (0, req, 1, aio_cb);
508
509 if (!req)
510 croak ("out of memory during aio_req allocation");
511
512 req->type = REQ_READAHEAD;
513 req->fd = PerlIO_fileno (fh);
514 req->offset = offset;
515 req->length = length;
516 req->callback = SvREFCNT_inc (callback);
517
518 send_req (req);
519}
520
521void
522aio_stat(fh_or_path,callback=&PL_sv_undef)
523 SV * fh_or_path
524 SV * callback
525 ALIAS:
526 aio_stat = REQ_STAT
527 aio_lstat = REQ_LSTAT
528 CODE:
529{
530 aio_req req;
531
532 Newz (0, req, 1, aio_cb);
533
534 if (!req)
535 croak ("out of memory during aio_req allocation");
536
537 New (0, req->statdata, 1, Stat_t);
538
539 if (!req->statdata)
540 croak ("out of memory during aio_req->statdata allocation");
541
542 if (SvPOK (fh_or_path))
543 {
544 req->type = ix;
545 req->data = newSVsv (fh_or_path);
546 req->dataptr = SvPV_nolen (req->data);
547 }
548 else
549 {
550 req->type = REQ_FSTAT;
551 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552 }
553
554 req->callback = SvREFCNT_inc (callback);
555
556 send_req (req);
557}
558
559void
560aio_unlink(pathname,callback=&PL_sv_undef)
561 SV * pathname
562 SV * callback
563 CODE:
564{
565 aio_req req;
566
567 Newz (0, req, 1, aio_cb);
568
569 if (!req)
570 croak ("out of memory during aio_req allocation");
571
572 req->type = REQ_UNLINK;
573 req->data = newSVsv (pathname);
574 req->dataptr = SvPV_nolen (req->data);
575 req->callback = SvREFCNT_inc (callback);
576
577 send_req (req);
578}
579
580void
581flush()
582 PROTOTYPE:
583 CODE:
584 while (nreqs)
585 {
586 poll_wait ();
587 poll_cb ();
588 }
589
590void
591poll() 1298poll()
592 PROTOTYPE: 1299 PROTOTYPE:
593 CODE: 1300 CODE:
594 if (nreqs)
595 {
596 poll_wait (); 1301 poll_wait ();
597 poll_cb (); 1302 RETVAL = poll_cb ();
598 } 1303 OUTPUT:
1304 RETVAL
599 1305
600int 1306int
601poll_fileno() 1307poll_fileno()
602 PROTOTYPE: 1308 PROTOTYPE:
603 CODE: 1309 CODE:
604 RETVAL = respipe [0]; 1310 RETVAL = s_epipe_fd (&respipe);
605 OUTPUT: 1311 OUTPUT:
606 RETVAL 1312 RETVAL
607 1313
608int 1314int
609poll_cb(...) 1315poll_cb(...)
… …
615 1321
616void 1322void
617poll_wait() 1323poll_wait()
618 PROTOTYPE: 1324 PROTOTYPE:
619 CODE: 1325 CODE:
620 if (nreqs)
621 poll_wait (); 1326 poll_wait ();
622 1327
623int 1328int
624nreqs() 1329nreqs()
625 PROTOTYPE: 1330 PROTOTYPE:
626 CODE: 1331 CODE:
627 RETVAL = nreqs; 1332 RETVAL = eio_nreqs ();
628 OUTPUT: 1333 OUTPUT:
629 RETVAL 1334 RETVAL
630 1335
1336int
1337nready()
1338 PROTOTYPE:
1339 CODE:
1340 RETVAL = eio_nready ();
1341 OUTPUT:
1342 RETVAL
1343
1344int
1345npending()
1346 PROTOTYPE:
1347 CODE:
1348 RETVAL = eio_npending ();
1349 OUTPUT:
1350 RETVAL
1351
1352int
1353nthreads()
1354 PROTOTYPE:
1355 CODE:
1356 RETVAL = eio_nthreads ();
1357 OUTPUT:
1358 RETVAL
1359
1360int
1361fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1362 PROTOTYPE: $$$$
1363 CODE:
1364#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1365 RETVAL = posix_fadvise (fh, offset, length, advice);
1366#else
1367 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1368#endif
1369 OUTPUT:
1370 RETVAL
1371
1372ssize_t
1373sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1374 PROTOTYPE: $$$$
1375 CODE:
1376 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1377 OUTPUT:
1378 RETVAL
1379
1380void
1381mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1382 PROTOTYPE: $$$$$;$
1383 PPCODE:
1384 sv_unmagic (scalar, MMAP_MAGIC);
1385{
1386 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1387 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1388 if (addr == (void *)-1)
1389 XSRETURN_NO;
1390
1391 /* we store the length in mg_obj, as namlen is I32 :/ */
1392 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1393 ->mg_obj = (SV *)length;
1394
1395 SvUPGRADE (scalar, SVt_PV); /* nop... */
1396 if (!(prot & PROT_WRITE))
1397 SvREADONLY_on (scalar);
1398
1399 SvPVX (scalar) = (char *)addr;
1400 SvCUR_set (scalar, length);
1401 SvLEN_set (scalar, 0);
1402 SvPOK_only (scalar);
1403
1404 XSRETURN_YES;
1405}
1406
1407void
1408munmap (SV *scalar)
1409 PROTOTYPE: $
1410 CODE:
1411 sv_unmagic (scalar, MMAP_MAGIC);
1412
1413int
1414mlockall (int flags)
1415 PROTOTYPE: $
1416 CODE:
1417#if _POSIX_MEMLOCK
1418#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1419 extern int mallopt (int, int);
1420 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1421#endif
1422 mlockall (flags);
1423#else
1424 RETVAL = -1;
1425 errno = ENOSYS;
1426#endif
1427 OUTPUT:
1428 RETVAL
1429
1430int
1431munlockall ()
1432 PROTOTYPE:
1433 CODE:
1434#if _POSIX_MEMLOCK
1435 munlockall ();
1436#else
1437 RETVAL = -1;
1438 errno = ENOSYS;
1439#endif
1440 OUTPUT:
1441 RETVAL
1442
1443void _on_next_submit (SV *cb)
1444 CODE:
1445 SvREFCNT_dec (on_next_submit);
1446 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1447
1448PROTOTYPES: DISABLE
1449
1450MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1451
1452void
1453cancel (aio_req_ornot req)
1454 CODE:
1455 eio_cancel (req);
1456
1457void
1458cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1459 PPCODE:
1460{
1461 if (GIMME_V != G_VOID)
1462 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1463
1464 if (items > 1)
1465 {
1466 SV *cb_cv =get_cb (callback);
1467
1468 SvREFCNT_dec (req->callback);
1469 req->callback = SvREFCNT_inc (cb_cv);
1470 }
1471}
1472
1473MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474
1475void
1476add (aio_req grp, ...)
1477 PPCODE:
1478{
1479 int i;
1480
1481 if (grp->int1 == 2)
1482 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1483
1484 for (i = 1; i < items; ++i )
1485 {
1486 aio_req req;
1487
1488 if (GIMME_V != G_VOID)
1489 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1490
1491 req = SvAIO_REQ (ST (i));
1492
1493 if (req)
1494 eio_grp_add (grp, req);
1495 }
1496}
1497
1498void
1499cancel_subs (aio_req_ornot req)
1500 CODE:
1501 req_cancel_subs (req);
1502
1503void
1504result (aio_req grp, ...)
1505 CODE:
1506{
1507 int i;
1508 AV *av;
1509
1510 grp->errorno = errno;
1511
1512 av = newAV ();
1513 av_extend (av, items - 1);
1514
1515 for (i = 1; i < items; ++i )
1516 av_push (av, newSVsv (ST (i)));
1517
1518 SvREFCNT_dec (grp->sv1);
1519 grp->sv1 = (SV *)av;
1520}
1521
1522void
1523errno (aio_req grp, int errorno = errno)
1524 CODE:
1525 grp->errorno = errorno;
1526
1527void
1528limit (aio_req grp, int limit)
1529 CODE:
1530 eio_grp_limit (grp, limit);
1531
1532void
1533feed (aio_req grp, SV *callback=&PL_sv_undef)
1534 CODE:
1535{
1536 SvREFCNT_dec (grp->sv2);
1537 grp->sv2 = newSVsv (callback);
1538 grp->feed = aio_grp_feed;
1539
1540 if (grp->int2 <= 0)
1541 grp->int2 = 2;
1542
1543 eio_grp_limit (grp, grp->int2);
1544}
1545

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