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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.168 by root, Wed Aug 4 14:02:58 2010 UTC

1#define PERL_NO_GET_CONTEXT 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
7#include <sys/types.h> 14#include <sys/types.h>
8#include <sys/stat.h> 15#include <sys/stat.h>
16#include <sys/statvfs.h>
9#include <unistd.h> 17#include <limits.h>
10#include <fcntl.h> 18#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 19#include <sched.h>
13#include <endian.h>
14 20
15#include <pthread.h> 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
16#include <sys/syscall.h> 22# include <sys/mman.h>
23#endif
17 24
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25/* perl namespace pollution */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26#undef VERSION
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 27
22#if __i386 || __amd64 28#ifdef _WIN32
23# define STACKSIZE ( 256 * sizeof (long)) 29
24#elif __ia64 30# define EIO_STRUCT_DIRENT Direntry_t
25# define STACKSIZE (8192 * sizeof (long)) 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
26#else 66#else
27# define STACKSIZE ( 512 * sizeof (long)) 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 */
28#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)
29 214
30enum { 215enum {
31 REQ_QUIT, 216 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 217};
37 218
38typedef struct aio_cb { 219#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 220
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 221typedef eio_req *aio_req;
222typedef eio_req *aio_req_ornot;
57 223
58static int started; 224static SV *on_next_submit;
59static int nreqs; 225static int next_pri = EIO_PRI_DEFAULT;
60static int respipe [2]; 226static int max_outstanding;
61 227
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 228static s_epipe respipe;
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 229
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 230static void req_destroy (aio_req req);
67static volatile aio_req ress, rese; /* queue start, queue end */ 231static void req_cancel (aio_req req);
68 232
69static void *aio_proc(void *arg); 233static void want_poll (void)
70
71static void
72start_thread (void)
73{ 234{
74 sigset_t fullsigset, oldsigset; 235 /* write a dummy byte to the pipe so fh becomes ready */
75 pthread_t tid; 236 s_epipe_signal (&respipe);
76 pthread_attr_t attr;
77
78 pthread_attr_init (&attr);
79 pthread_attr_setstacksize (&attr, STACKSIZE);
80 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
81
82 sigfillset (&fullsigset);
83 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
84
85 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
86 started++;
87
88 sigprocmask (SIG_SETMASK, &oldsigset, 0);
89} 237}
90 238
91static void 239static void done_poll (void)
92send_req (aio_req req)
93{ 240{
94 nreqs++; 241 /* read any signals sent by the worker threads */
242 s_epipe_drain (&respipe);
243}
95 244
96 pthread_mutex_lock (&reqlock); 245/* must be called at most once */
97 246static SV *req_sv (aio_req req, HV *stash)
98 req->next = 0; 247{
99
100 if (reqe) 248 if (!req->self)
101 { 249 {
102 reqe->next = req; 250 req->self = (SV *)newHV ();
103 reqe = req; 251 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
104 } 252 }
105 else
106 reqe = reqs = req;
107 253
108 pthread_cond_signal (&reqwait); 254 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
109 pthread_mutex_unlock (&reqlock);
110} 255}
111 256
112static void 257static aio_req SvAIO_REQ (SV *sv)
113end_thread (void)
114{ 258{
115 aio_req req; 259 MAGIC *mg;
116 New (0, req, 1, aio_cb);
117 req->type = REQ_QUIT;
118 260
119 send_req (req); 261 if (!SvROK (sv)
120} 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");
121 266
122static void 267 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback)
126{
127 aio_req req;
128 STRLEN svlen;
129 char *svptr = SvPV (data, svlen);
130 268
131 SvUPGRADE (data, SVt_PV); 269 return mg ? (aio_req)mg->mg_ptr : 0;
132 SvPOK_on (data); 270}
133 271
134 if (dataoffset < 0) 272static void aio_grp_feed (aio_req grp)
135 dataoffset += svlen; 273{
136 274 if (grp->sv2 && SvOK (grp->sv2))
137 if (dataoffset < 0 || dataoffset > svlen)
138 croak ("data offset outside of string");
139
140 if (dowrite)
141 { 275 {
142 /* write: check length and adjust. */ 276 dSP;
143 if (length < 0 || length + dataoffset > svlen) 277
144 length = svlen - dataoffset; 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;
145 } 287 }
146 else 288}
289
290static void req_submit (eio_req *req)
291{
292 eio_submit (req);
293
294 if (expect_false (on_next_submit))
147 { 295 {
148 /* read: grow scalar as necessary */ 296 dSP;
149 svptr = SvGROW (data, length + dataoffset); 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);
150 } 304 }
151
152 if (length < 0)
153 croak ("length must not be negative");
154
155 Newz (0, req, 1, aio_cb);
156
157 if (!req)
158 croak ("out of memory during aio_req allocation");
159
160 req->type = dowrite ? REQ_WRITE : REQ_READ;
161 req->fd = fd;
162 req->offset = offset;
163 req->length = length;
164 req->data = SvREFCNT_inc (data);
165 req->dataptr = (char *)svptr + dataoffset;
166 req->callback = SvREFCNT_inc (callback);
167
168 send_req (req);
169} 305}
170 306
171static void 307static int req_invoke (eio_req *req)
172poll_wait ()
173{ 308{
174 if (!nreqs) 309 if (req->flags & FLAG_SV2_RO_OFF)
175 return; 310 SvREADONLY_off (req->sv2);
176 311
177 fd_set rfd; 312 if (!EIO_CANCELLED (req) && req->callback)
178 FD_ZERO(&rfd);
179 FD_SET(respipe [0], &rfd);
180
181 select (respipe [0] + 1, &rfd, 0, 0, 0);
182}
183
184static int
185poll_cb (pTHX)
186{
187 dSP;
188 int count = 0;
189 aio_req req;
190
191 {
192 /* read and signals sent by the worker threads */
193 char buf [32];
194 while (read (respipe [0], buf, 32) > 0)
195 ;
196 }
197
198 for (;;)
199 { 313 {
200 pthread_mutex_lock (&reslock); 314 dSP;
315 static SV *sv_result_cache; /* caches the result integer SV */
316 SV *sv_result;
201 317
202 req = ress; 318 ENTER;
319 SAVETMPS;
320 PUSHMARK (SP);
321 EXTEND (SP, 1);
203 322
204 if (ress) 323 /* do not recreate the result IV from scratch each time */
324 if (expect_true (sv_result_cache))
205 { 325 {
206 ress = ress->next; 326 sv_result = sv_result_cache; sv_result_cache = 0;
207 if (!ress) rese = 0; 327 SvIV_set (sv_result, req->result);
208 }
209
210 pthread_mutex_unlock (&reslock);
211
212 if (!req)
213 break;
214
215 nreqs--;
216
217 if (req->type == REQ_QUIT)
218 started--;
219 else
220 {
221 int errorno = errno;
222 errno = req->errorno;
223
224 if (req->type == REQ_READ)
225 SvCUR_set (req->data, req->dataoffset
226 + req->result > 0 ? req->result : 0);
227
228 if (req->data)
229 SvREFCNT_dec (req->data);
230
231 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
232 {
233 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234 PL_laststatval = req->result;
235 PL_statcache = *(req->statdata);
236
237 Safefree (req->statdata);
238 }
239
240 PUSHMARK (SP);
241 XPUSHs (sv_2mortal (newSViv (req->result)));
242
243 if (req->type == REQ_OPEN)
244 {
245 /* convert fd to fh */
246 SV *fh;
247
248 PUTBACK;
249 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
250 SPAGAIN;
251
252 fh = POPs;
253
254 PUSHMARK (SP);
255 XPUSHs (fh);
256 }
257
258 PUTBACK;
259 call_sv (req->callback, G_VOID | G_EVAL);
260 SPAGAIN;
261
262 if (req->callback)
263 SvREFCNT_dec (req->callback);
264
265 errno = errorno;
266 count++;
267 }
268
269 Safefree (req);
270 }
271
272 return count;
273}
274
275static void *
276aio_proc (void *thr_arg)
277{
278 aio_req req;
279 int type;
280
281 do
282 {
283 pthread_mutex_lock (&reqlock);
284
285 for (;;)
286 {
287 req = reqs;
288
289 if (reqs)
290 {
291 reqs = reqs->next;
292 if (!reqs) reqe = 0;
293 }
294
295 if (req)
296 break;
297
298 pthread_cond_wait (&reqwait, &reqlock);
299 }
300
301 pthread_mutex_unlock (&reqlock);
302
303 errno = 0; /* strictly unnecessary */
304
305 type = req->type;
306
307 switch (type)
308 {
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
310 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
311#if SYS_readahead
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif
316
317 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320
321 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
322 case REQ_CLOSE: req->result = close (req->fd); break;
323 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
324
325 case REQ_FSYNC: req->result = fsync (req->fd); break;
326 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327
328 case REQ_QUIT:
329 break;
330
331 default:
332 req->result = ENOSYS;
333 break;
334 }
335
336 req->errorno = errno;
337
338 pthread_mutex_lock (&reslock);
339
340 req->next = 0;
341
342 if (rese)
343 {
344 rese->next = req;
345 rese = req;
346 } 328 }
347 else 329 else
348 { 330 {
349 rese = ress = req; 331 sv_result = newSViv (req->result);
350 332 SvREADONLY_on (sv_result);
351 /* write a dummy byte to the pipe so fh becomes ready */
352 write (respipe [1], &respipe, 1);
353 } 333 }
354 334
355 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;
356 } 526 }
357 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
626 if (SvPVX (sv) != mg->mg_ptr)
627 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
628
629 SvCUR_set (sv, 0);
630 SvPVX (sv) = 0;
631 SvOK_off (sv);
358 632
359 return 0; 633 return 0;
360} 634}
361 635
636static MGVTBL mmap_vtbl = {
637 0, 0, 0, 0, mmap_free
638};
639
640/*****************************************************************************/
641
642static SV *
643get_cb (SV *cb_sv)
644{
645 SvGETMAGIC (cb_sv);
646 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
647}
648
649#define dREQ \
650 SV *cb_cv; \
651 aio_req req; \
652 int req_pri = next_pri; \
653 next_pri = EIO_PRI_DEFAULT; \
654 \
655 cb_cv = get_cb (callback); \
656 \
657 Newz (0, req, 1, eio_req); \
658 if (!req) \
659 croak ("out of memory during eio_req allocation"); \
660 \
661 req->callback = SvREFCNT_inc (cb_cv); \
662 req->pri = req_pri
663
664#define REQ_SEND \
665 PUTBACK; \
666 req_submit (req); \
667 SPAGAIN; \
668 \
669 if (GIMME_V != G_VOID) \
670 XPUSHs (req_sv (req, aio_req_stash));
671
362MODULE = IO::AIO PACKAGE = IO::AIO 672MODULE = IO::AIO PACKAGE = IO::AIO
363 673
674PROTOTYPES: ENABLE
675
364BOOT: 676BOOT:
365{ 677{
366 if (pipe (respipe)) 678 static const struct {
367 croak ("unable to initialize result pipe"); 679 const char *name;
680 IV iv;
681 } *civ, const_iv[] = {
682# define const_niv(name, value) { # name, (IV) value },
683# define const_iv(name) { # name, (IV) name },
684# define const_eio(name) { # name, (IV) EIO_ ## name },
685 const_iv (EXDEV)
686 const_iv (ENOSYS)
687 const_iv (O_RDONLY)
688 const_iv (O_WRONLY)
689 const_iv (O_RDWR)
690 const_iv (O_CREAT)
691 const_iv (O_TRUNC)
692 const_iv (O_EXCL)
693 const_iv (O_APPEND)
694#ifndef _WIN32
695 const_iv (S_IFIFO)
696#endif
697 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
698 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
699 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
700 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
701 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
702 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
368 703
369 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 704 const_iv (ST_RDONLY)
370 croak ("cannot set result pipe to nonblocking mode"); 705 const_iv (ST_NOSUID)
706 const_iv (ST_NODEV)
707 const_iv (ST_NOEXEC)
708 const_iv (ST_SYNCHRONOUS)
709 const_iv (ST_MANDLOCK)
710 const_iv (ST_WRITE)
711 const_iv (ST_APPEND)
712 const_iv (ST_IMMUTABLE)
713 const_iv (ST_NOATIME)
714 const_iv (ST_NODIRATIME)
715 const_iv (ST_RELATIME)
371 716
372 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 717 const_iv (PROT_EXEC)
373 croak ("cannot set result pipe to nonblocking mode"); 718 const_iv (PROT_NONE)
374} 719 const_iv (PROT_READ)
720 const_iv (PROT_WRITE)
375 721
722 /*const_iv (MAP_FIXED)*/
723 const_iv (MAP_PRIVATE)
724 const_iv (MAP_SHARED)
725 const_iv (MAP_ANONYMOUS)
726
727 /* linuxish */
728 const_iv (MAP_HUGETLB)
729 const_iv (MAP_LOCKED)
730 const_iv (MAP_NORESERVE)
731 const_iv (MAP_POPULATE)
732 const_iv (MAP_NONBLOCK)
733
734 const_iv (MCL_FUTURE)
735 const_iv (MCL_CURRENT)
736
737 const_eio (MS_ASYNC)
738 const_eio (MS_INVALIDATE)
739 const_eio (MS_SYNC)
740
741 const_eio (MT_MODIFY)
742
743 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
744 const_eio (SYNC_FILE_RANGE_WRITE)
745 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
746
747 const_eio (READDIR_DENTS)
748 const_eio (READDIR_DIRS_FIRST)
749 const_eio (READDIR_STAT_ORDER)
750 const_eio (READDIR_FOUND_UNKNOWN)
751
752 const_eio (DT_UNKNOWN)
753 const_eio (DT_FIFO)
754 const_eio (DT_CHR)
755 const_eio (DT_DIR)
756 const_eio (DT_BLK)
757 const_eio (DT_REG)
758 const_eio (DT_LNK)
759 const_eio (DT_SOCK)
760 const_eio (DT_WHT)
761 };
762
763 aio_stash = gv_stashpv ("IO::AIO" , 1);
764 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
765 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
766
767 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
768 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
769
770 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
771
772 create_respipe ();
773
774 if (eio_init (want_poll, done_poll) < 0)
775 croak ("IO::AIO: unable to initialise eio library");
776
777 /* atfork child called in fifo order, so before eio's handler */
778 X_THREAD_ATFORK (0, 0, atfork_child);
779}
780
376void 781void
377min_parallel(nthreads) 782max_poll_reqs (int nreqs)
378 int nthreads
379 PROTOTYPE: $ 783 PROTOTYPE: $
380 CODE: 784 CODE:
381 while (nthreads > started) 785 eio_set_max_poll_reqs (nreqs);
382 start_thread ();
383 786
384void 787void
385max_parallel(nthreads) 788max_poll_time (double nseconds)
386 int nthreads
387 PROTOTYPE: $ 789 PROTOTYPE: $
388 CODE: 790 CODE:
791 eio_set_max_poll_time (nseconds);
792
793void
794min_parallel (int nthreads)
795 PROTOTYPE: $
796 CODE:
797 eio_set_min_parallel (nthreads);
798
799void
800max_parallel (int nthreads)
801 PROTOTYPE: $
802 CODE:
803 eio_set_max_parallel (nthreads);
804
805void
806max_idle (int nthreads)
807 PROTOTYPE: $
808 CODE:
809 eio_set_max_idle (nthreads);
810
811void
812max_outstanding (int maxreqs)
813 PROTOTYPE: $
814 CODE:
815 max_outstanding = maxreqs;
816
817void
818aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
819 PROTOTYPE: $$$;$
820 PPCODE:
389{ 821{
390 int cur = started; 822 dREQ;
391 while (cur > nthreads) 823
392 { 824 req->type = EIO_OPEN;
393 end_thread (); 825 req->sv1 = newSVsv (pathname);
394 cur--; 826 req->ptr1 = SvPVbyte_nolen (req->sv1);
827 req->int1 = flags;
828 req->int2 = mode;
829
830 REQ_SEND;
831}
832
833void
834aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
835 PROTOTYPE: $;$
836 ALIAS:
837 aio_fsync = EIO_FSYNC
838 aio_fdatasync = EIO_FDATASYNC
839 PPCODE:
840{
841 int fd = s_fileno_croak (fh, 0);
842 dREQ;
843
844 req->type = ix;
845 req->sv1 = newSVsv (fh);
846 req->int1 = fd;
847
848 REQ_SEND (req);
849}
850
851void
852aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
853 PROTOTYPE: $$$$;$
854 PPCODE:
855{
856 int fd = s_fileno_croak (fh, 0);
857 dREQ;
858
859 req->type = EIO_SYNC_FILE_RANGE;
860 req->sv1 = newSVsv (fh);
861 req->int1 = fd;
862 req->offs = offset;
863 req->size = nbytes;
864 req->int2 = flags;
865
866 REQ_SEND (req);
867}
868
869void
870aio_close (SV *fh, SV *callback=&PL_sv_undef)
871 PROTOTYPE: $;$
872 PPCODE:
873{
874 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
875 int fd = s_fileno_croak (fh, 0);
876 dREQ;
877
878 if (close_pipe < 0)
879 {
880 int pipefd [2];
881
882 if (pipe (pipefd) < 0
883 || close (pipefd [1]) < 0
884 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
885 abort (); /*D*/
886
887 close_pipe = pipefd [0];
395 } 888 }
396 889
397 while (started > nthreads) 890 req->type = EIO_DUP2;
891 req->int1 = close_pipe;
892 req->sv2 = newSVsv (fh);
893 req->int2 = fd;
894
895 REQ_SEND (req);
896}
897
898void
899aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
900 ALIAS:
901 aio_read = EIO_READ
902 aio_write = EIO_WRITE
903 PROTOTYPE: $$$$$;$
904 PPCODE:
905{
906 STRLEN svlen;
907 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
908 char *svptr = SvPVbyte (data, svlen);
909 UV len = SvUV (length);
910
911 if (dataoffset < 0)
912 dataoffset += svlen;
913
914 if (dataoffset < 0 || dataoffset > svlen)
915 croak ("dataoffset outside of data scalar");
916
917 if (ix == EIO_WRITE)
398 { 918 {
399 poll_wait (); 919 /* write: check length and adjust. */
400 poll_cb (aTHX); 920 if (!SvOK (length) || len + dataoffset > svlen)
401 } 921 len = svlen - dataoffset;
402}
403
404void
405aio_open(pathname,flags,mode,callback)
406 SV * pathname
407 int flags
408 int mode
409 SV * callback
410 PROTOTYPE: $$$$
411 CODE:
412{
413 aio_req req;
414
415 Newz (0, req, 1, aio_cb);
416
417 if (!req)
418 croak ("out of memory during aio_req allocation");
419
420 req->type = REQ_OPEN;
421 req->data = newSVsv (pathname);
422 req->dataptr = SvPV_nolen (req->data);
423 req->fd = flags;
424 req->mode = mode;
425 req->callback = SvREFCNT_inc (callback);
426
427 send_req (req);
428}
429
430void
431aio_close(fh,callback)
432 InputStream fh
433 SV * callback
434 PROTOTYPE: $$
435 ALIAS:
436 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC
439 CODE:
440{
441 aio_req req;
442
443 Newz (0, req, 1, aio_cb);
444
445 if (!req)
446 croak ("out of memory during aio_req allocation");
447
448 req->type = ix;
449 req->fd = PerlIO_fileno (fh);
450 req->callback = SvREFCNT_inc (callback);
451
452 send_req (req);
453}
454
455void
456aio_read(fh,offset,length,data,dataoffset,callback)
457 InputStream fh
458 UV offset
459 IV length
460 SV * data
461 IV dataoffset
462 SV * callback
463 PROTOTYPE: $$$$$$
464 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467void
468aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh
470 UV offset
471 IV length
472 SV * data
473 IV dataoffset
474 SV * callback
475 PROTOTYPE: $$$$$$
476 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479void
480aio_readahead(fh,offset,length,callback)
481 InputStream fh
482 UV offset
483 IV length
484 SV * callback
485 PROTOTYPE: $$$$
486 CODE:
487{
488 aio_req req;
489
490 if (length < 0)
491 croak ("length must not be negative");
492
493 Newz (0, req, 1, aio_cb);
494
495 if (!req)
496 croak ("out of memory during aio_req allocation");
497
498 req->type = REQ_READAHEAD;
499 req->fd = PerlIO_fileno (fh);
500 req->offset = offset;
501 req->length = length;
502 req->callback = SvREFCNT_inc (callback);
503
504 send_req (req);
505}
506
507void
508aio_stat(fh_or_path,callback)
509 SV * fh_or_path
510 SV * callback
511 PROTOTYPE: $$
512 ALIAS:
513 aio_lstat = 1
514 CODE:
515{
516 aio_req req;
517
518 Newz (0, req, 1, aio_cb);
519
520 if (!req)
521 croak ("out of memory during aio_req allocation");
522
523 New (0, req->statdata, 1, Stat_t);
524
525 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation");
527
528 if (SvPOK (fh_or_path))
529 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT;
531 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data);
533 } 922 }
534 else 923 else
535 { 924 {
536 req->type = REQ_FSTAT; 925 /* read: check type and grow scalar as necessary */
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 926 SvUPGRADE (data, SVt_PV);
927 svptr = SvGROW (data, len + dataoffset + 1);
538 } 928 }
539 929
930 {
931 dREQ;
932
933 req->type = ix;
934 req->sv1 = newSVsv (fh);
935 req->int1 = fd;
936 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
937 req->size = len;
540 req->callback = SvREFCNT_inc (callback); 938 req->sv2 = SvREFCNT_inc (data);
939 req->ptr2 = (char *)svptr + dataoffset;
940 req->stroffset = dataoffset;
541 941
542 send_req (req); 942 if (!SvREADONLY (data))
543} 943 {
944 SvREADONLY_on (data);
945 req->flags |= FLAG_SV2_RO_OFF;
946 }
544 947
948 REQ_SEND;
949 }
950}
951
545void 952void
546aio_unlink(pathname,callback) 953aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
547 SV * pathname
548 SV * callback
549 PROTOTYPE: $$ 954 PROTOTYPE: $$;$
955 PPCODE:
956{
957 SV *data;
958 dREQ;
959
960 req->type = EIO_READLINK;
961 req->sv1 = newSVsv (path);
962 req->ptr1 = SvPVbyte_nolen (req->sv1);
963
964 REQ_SEND;
965}
966
967void
968aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
969 PROTOTYPE: $$$$;$
970 PPCODE:
971{
972 int ifd = s_fileno_croak (in_fh , 0);
973 int ofd = s_fileno_croak (out_fh, 1);
974 dREQ;
975
976 req->type = EIO_SENDFILE;
977 req->sv1 = newSVsv (out_fh);
978 req->int1 = ofd;
979 req->sv2 = newSVsv (in_fh);
980 req->int2 = ifd;
981 req->offs = in_offset;
982 req->size = length;
983
984 REQ_SEND;
985}
986
987void
988aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
989 PROTOTYPE: $$$;$
990 PPCODE:
991{
992 int fd = s_fileno_croak (fh, 0);
993 dREQ;
994
995 req->type = EIO_READAHEAD;
996 req->sv1 = newSVsv (fh);
997 req->int1 = fd;
998 req->offs = offset;
999 req->size = length;
1000
1001 REQ_SEND;
1002}
1003
1004void
1005aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1006 ALIAS:
1007 aio_stat = EIO_STAT
1008 aio_lstat = EIO_LSTAT
1009 aio_statvfs = EIO_STATVFS
550 CODE: 1010 PPCODE:
551{ 1011{
552 aio_req req; 1012 dREQ;
1013
1014 req->sv1 = newSVsv (fh_or_path);
1015
1016 if (SvPOK (req->sv1))
1017 {
1018 req->type = ix;
1019 req->ptr1 = SvPVbyte_nolen (req->sv1);
1020 }
1021 else
1022 {
1023 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1024 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1025 }
1026
1027 REQ_SEND;
1028}
1029
1030void
1031aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1032 PPCODE:
1033{
1034 dREQ;
1035
1036 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1037 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1038 req->sv1 = newSVsv (fh_or_path);
1039
1040 if (SvPOK (req->sv1))
1041 {
1042 req->type = EIO_UTIME;
1043 req->ptr1 = SvPVbyte_nolen (req->sv1);
1044 }
1045 else
1046 {
1047 req->type = EIO_FUTIME;
1048 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1049 }
1050
1051 REQ_SEND;
1052}
1053
1054void
1055aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1056 PPCODE:
1057{
1058 dREQ;
1059
1060 req->sv1 = newSVsv (fh_or_path);
1061 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1062
1063 if (SvPOK (req->sv1))
1064 {
1065 req->type = EIO_TRUNCATE;
1066 req->ptr1 = SvPVbyte_nolen (req->sv1);
1067 }
1068 else
1069 {
1070 req->type = EIO_FTRUNCATE;
1071 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1072 }
1073
1074 REQ_SEND;
1075}
1076
1077void
1078aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1079 ALIAS:
1080 aio_chmod = EIO_CHMOD
1081 aio_mkdir = EIO_MKDIR
1082 PPCODE:
1083{
1084 dREQ;
1085
1086 req->int2 = mode;
1087 req->sv1 = newSVsv (fh_or_path);
1088
1089 if (SvPOK (req->sv1))
1090 {
1091 req->type = ix;
1092 req->ptr1 = SvPVbyte_nolen (req->sv1);
1093 }
1094 else
1095 {
1096 req->type = EIO_FCHMOD;
1097 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1098 }
1099
1100 REQ_SEND;
1101}
1102
1103void
1104aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1105 PPCODE:
1106{
1107 dREQ;
1108
1109 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1110 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1111 req->sv1 = newSVsv (fh_or_path);
1112
1113 if (SvPOK (req->sv1))
1114 {
1115 req->type = EIO_CHOWN;
1116 req->ptr1 = SvPVbyte_nolen (req->sv1);
1117 }
1118 else
1119 {
1120 req->type = EIO_FCHOWN;
1121 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1122 }
1123
1124 REQ_SEND;
1125}
1126
1127void
1128aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1129 PPCODE:
1130{
1131 dREQ;
553 1132
554 Newz (0, req, 1, aio_cb); 1133 req->type = EIO_READDIR;
1134 req->sv1 = newSVsv (pathname);
1135 req->ptr1 = SvPVbyte_nolen (req->sv1);
1136 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1137
1138 if (flags & EIO_READDIR_DENTS)
1139 req->int1 |= EIO_READDIR_CUSTOM2;
1140
1141 REQ_SEND;
1142}
1143
1144void
1145aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1146 ALIAS:
1147 aio_unlink = EIO_UNLINK
1148 aio_rmdir = EIO_RMDIR
1149 aio_readdir = EIO_READDIR
1150 PPCODE:
1151{
1152 dREQ;
555 1153
556 if (!req) 1154 req->type = ix;
557 croak ("out of memory during aio_req allocation"); 1155 req->sv1 = newSVsv (pathname);
1156 req->ptr1 = SvPVbyte_nolen (req->sv1);
1157
1158 REQ_SEND;
1159}
1160
1161void
1162aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1163 ALIAS:
1164 aio_link = EIO_LINK
1165 aio_symlink = EIO_SYMLINK
1166 aio_rename = EIO_RENAME
1167 PPCODE:
1168{
1169 dREQ;
558 1170
559 req->type = REQ_UNLINK; 1171 req->type = ix;
560 req->data = newSVsv (pathname); 1172 req->sv1 = newSVsv (oldpath);
561 req->dataptr = SvPV_nolen (req->data); 1173 req->ptr1 = SvPVbyte_nolen (req->sv1);
562 req->callback = SvREFCNT_inc (callback); 1174 req->sv2 = newSVsv (newpath);
1175 req->ptr2 = SvPVbyte_nolen (req->sv2);
563 1176
564 send_req (req); 1177 REQ_SEND;
565} 1178}
1179
1180void
1181aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1182 PPCODE:
1183{
1184 dREQ;
1185
1186 req->type = EIO_MKNOD;
1187 req->sv1 = newSVsv (pathname);
1188 req->ptr1 = SvPVbyte_nolen (req->sv1);
1189 req->int2 = (mode_t)mode;
1190 req->offs = dev;
1191
1192 REQ_SEND;
1193}
1194
1195void
1196aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1197 ALIAS:
1198 aio_mtouch = EIO_MTOUCH
1199 aio_msync = EIO_MSYNC
1200 PROTOTYPE: $$$$;$
1201 PPCODE:
1202{
1203 STRLEN svlen;
1204 UV len = SvUV (length);
1205 char *svptr = SvPVbyte (data, svlen);
1206
1207 if (offset < 0)
1208 offset += svlen;
1209
1210 if (offset < 0 || offset > svlen)
1211 croak ("offset outside of scalar");
1212
1213 if (!SvOK (length) || len + offset > svlen)
1214 len = svlen - offset;
1215
1216 {
1217 dREQ;
1218
1219 req->type = ix;
1220 req->size = len;
1221 req->sv2 = SvREFCNT_inc (data);
1222 req->ptr2 = (char *)svptr + offset;
1223 req->int1 = flags;
1224
1225 REQ_SEND;
1226 }
1227}
1228
1229void
1230aio_busy (double delay, SV *callback=&PL_sv_undef)
1231 PPCODE:
1232{
1233 dREQ;
1234
1235 req->type = EIO_BUSY;
1236 req->nv1 = delay < 0. ? 0. : delay;
1237
1238 REQ_SEND;
1239}
1240
1241void
1242aio_group (SV *callback=&PL_sv_undef)
1243 PROTOTYPE: ;$
1244 PPCODE:
1245{
1246 dREQ;
1247
1248 req->type = EIO_GROUP;
1249
1250 req_submit (req);
1251 XPUSHs (req_sv (req, aio_grp_stash));
1252}
1253
1254void
1255aio_nop (SV *callback=&PL_sv_undef)
1256 ALIAS:
1257 aio_nop = EIO_NOP
1258 aio_sync = EIO_SYNC
1259 PPCODE:
1260{
1261 dREQ;
1262
1263 req->type = ix;
1264
1265 REQ_SEND;
1266}
1267
1268int
1269aioreq_pri (int pri = 0)
1270 PROTOTYPE: ;$
1271 CODE:
1272 RETVAL = next_pri;
1273 if (items > 0)
1274 {
1275 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1276 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1277 next_pri = pri;
1278 }
1279 OUTPUT:
1280 RETVAL
1281
1282void
1283aioreq_nice (int nice = 0)
1284 CODE:
1285 nice = next_pri - nice;
1286 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1287 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1288 next_pri = nice;
1289
1290void
1291flush ()
1292 PROTOTYPE:
1293 CODE:
1294 while (eio_nreqs ())
1295 {
1296 poll_wait ();
1297 poll_cb ();
1298 }
1299
1300int
1301poll()
1302 PROTOTYPE:
1303 CODE:
1304 poll_wait ();
1305 RETVAL = poll_cb ();
1306 OUTPUT:
1307 RETVAL
566 1308
567int 1309int
568poll_fileno() 1310poll_fileno()
569 PROTOTYPE: 1311 PROTOTYPE:
570 CODE: 1312 CODE:
571 RETVAL = respipe [0]; 1313 RETVAL = s_epipe_fd (&respipe);
572 OUTPUT: 1314 OUTPUT:
573 RETVAL 1315 RETVAL
574 1316
575int 1317int
576poll_cb(...) 1318poll_cb(...)
577 PROTOTYPE: 1319 PROTOTYPE:
578 CODE: 1320 CODE:
579 RETVAL = poll_cb (aTHX); 1321 RETVAL = poll_cb ();
580 OUTPUT: 1322 OUTPUT:
581 RETVAL 1323 RETVAL
582 1324
583void 1325void
584poll_wait() 1326poll_wait()
585 PROTOTYPE: 1327 PROTOTYPE:
586 CODE: 1328 CODE:
587 if (nreqs)
588 poll_wait (); 1329 poll_wait ();
589 1330
590int 1331int
591nreqs() 1332nreqs()
592 PROTOTYPE: 1333 PROTOTYPE:
593 CODE: 1334 CODE:
594 RETVAL = nreqs; 1335 RETVAL = eio_nreqs ();
595 OUTPUT: 1336 OUTPUT:
596 RETVAL 1337 RETVAL
597 1338
1339int
1340nready()
1341 PROTOTYPE:
1342 CODE:
1343 RETVAL = eio_nready ();
1344 OUTPUT:
1345 RETVAL
1346
1347int
1348npending()
1349 PROTOTYPE:
1350 CODE:
1351 RETVAL = eio_npending ();
1352 OUTPUT:
1353 RETVAL
1354
1355int
1356nthreads()
1357 PROTOTYPE:
1358 CODE:
1359 RETVAL = eio_nthreads ();
1360 OUTPUT:
1361 RETVAL
1362
1363int
1364fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1365 PROTOTYPE: $$$$
1366 CODE:
1367#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1368 RETVAL = posix_fadvise (fh, offset, length, advice);
1369#else
1370 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1371#endif
1372 OUTPUT:
1373 RETVAL
1374
1375ssize_t
1376sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1377 PROTOTYPE: $$$$
1378 CODE:
1379 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1380 OUTPUT:
1381 RETVAL
1382
1383void
1384mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1385 PROTOTYPE: $$$$$;$
1386 PPCODE:
1387 sv_unmagic (scalar, MMAP_MAGIC);
1388{
1389 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1390 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1391 if (addr == (void *)-1)
1392 XSRETURN_NO;
1393
1394 sv_force_normal (scalar);
1395
1396 /* we store the length in mg_obj, as namlen is I32 :/ */
1397 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1398 ->mg_obj = (SV *)length;
1399
1400 SvUPGRADE (scalar, SVt_PV); /* nop... */
1401
1402 if (!(prot & PROT_WRITE))
1403 SvREADONLY_on (scalar);
1404
1405 if (SvLEN (scalar))
1406 Safefree (SvPVX (scalar));
1407
1408 SvPVX (scalar) = (char *)addr;
1409 SvCUR_set (scalar, length);
1410 SvLEN_set (scalar, 0);
1411 SvPOK_only (scalar);
1412
1413 XSRETURN_YES;
1414}
1415
1416void
1417munmap (SV *scalar)
1418 PROTOTYPE: $
1419 CODE:
1420 sv_unmagic (scalar, MMAP_MAGIC);
1421
1422int
1423mlockall (int flags)
1424 PROTOTYPE: $
1425 CODE:
1426#if _POSIX_MEMLOCK
1427#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1428 extern int mallopt (int, int);
1429 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1430#endif
1431 mlockall (flags);
1432#else
1433 RETVAL = -1;
1434 errno = ENOSYS;
1435#endif
1436 OUTPUT:
1437 RETVAL
1438
1439int
1440munlockall ()
1441 PROTOTYPE:
1442 CODE:
1443#if _POSIX_MEMLOCK
1444 munlockall ();
1445#else
1446 RETVAL = -1;
1447 errno = ENOSYS;
1448#endif
1449 OUTPUT:
1450 RETVAL
1451
1452void _on_next_submit (SV *cb)
1453 CODE:
1454 SvREFCNT_dec (on_next_submit);
1455 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1456
1457PROTOTYPES: DISABLE
1458
1459MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1460
1461void
1462cancel (aio_req_ornot req)
1463 CODE:
1464 eio_cancel (req);
1465
1466void
1467cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1468 PPCODE:
1469{
1470 if (GIMME_V != G_VOID)
1471 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1472
1473 if (items > 1)
1474 {
1475 SV *cb_cv =get_cb (callback);
1476
1477 SvREFCNT_dec (req->callback);
1478 req->callback = SvREFCNT_inc (cb_cv);
1479 }
1480}
1481
1482MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1483
1484void
1485add (aio_req grp, ...)
1486 PPCODE:
1487{
1488 int i;
1489
1490 if (grp->int1 == 2)
1491 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1492
1493 for (i = 1; i < items; ++i )
1494 {
1495 aio_req req;
1496
1497 if (GIMME_V != G_VOID)
1498 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1499
1500 req = SvAIO_REQ (ST (i));
1501
1502 if (req)
1503 eio_grp_add (grp, req);
1504 }
1505}
1506
1507void
1508cancel_subs (aio_req_ornot req)
1509 CODE:
1510 req_cancel_subs (req);
1511
1512void
1513result (aio_req grp, ...)
1514 CODE:
1515{
1516 int i;
1517 AV *av;
1518
1519 grp->errorno = errno;
1520
1521 av = newAV ();
1522 av_extend (av, items - 1);
1523
1524 for (i = 1; i < items; ++i )
1525 av_push (av, newSVsv (ST (i)));
1526
1527 SvREFCNT_dec (grp->sv1);
1528 grp->sv1 = (SV *)av;
1529}
1530
1531void
1532errno (aio_req grp, int errorno = errno)
1533 CODE:
1534 grp->errorno = errorno;
1535
1536void
1537limit (aio_req grp, int limit)
1538 CODE:
1539 eio_grp_limit (grp, limit);
1540
1541void
1542feed (aio_req grp, SV *callback=&PL_sv_undef)
1543 CODE:
1544{
1545 SvREFCNT_dec (grp->sv2);
1546 grp->sv2 = newSVsv (callback);
1547 grp->feed = aio_grp_feed;
1548
1549 if (grp->int2 <= 0)
1550 grp->int2 = 2;
1551
1552 eio_grp_limit (grp, grp->int2);
1553}
1554

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