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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 1.165 by root, Sun May 9 20:42:55 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{
174 if (!nreqs)
175 return;
176
177 fd_set rfd;
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{ 308{
187 dSP; 309 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 }
197 310
198 for (;;) 311 if (req->flags & FLAG_SV2_RO_OFF)
312 SvREADONLY_off (req->sv2);
313
314 if (!EIO_CANCELLED (req) && req->callback)
199 { 315 {
200 pthread_mutex_lock (&reslock); 316 static SV *sv_result_cache; /* caches the result integer SV */
317 SV *sv_result;
201 318
202 req = ress; 319 ENTER;
320 SAVETMPS;
321 PUSHMARK (SP);
322 EXTEND (SP, 1);
203 323
204 if (ress) 324 /* do not recreate the result IV from scratch each time */
325 if (expect_true (sv_result_cache))
205 { 326 {
206 ress = ress->next; 327 sv_result = sv_result_cache; sv_result_cache = 0;
207 if (!ress) rese = 0; 328 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 } 329 }
347 else 330 else
348 { 331 {
349 rese = ress = req; 332 sv_result = newSViv (req->result);
350 333 SvREADONLY_on (sv_result);
351 /* write a dummy byte to the pipe so fh becomes ready */
352 write (respipe [1], &respipe, 1);
353 } 334 }
354 335
355 pthread_mutex_unlock (&reslock); 336 switch (req->type)
337 {
338 case EIO_READDIR:
339 {
340 SV *rv = &PL_sv_undef;
341
342 if (req->result >= 0)
343 {
344 int i;
345 char *names = (char *)req->ptr2;
346 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
347 AV *av = newAV ();
348
349 av_extend (av, req->result - 1);
350
351 for (i = 0; i < req->result; ++i)
352 {
353 if (req->int1 & EIO_READDIR_DENTS)
354 {
355 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
356
357 if (req->int1 & EIO_READDIR_CUSTOM2)
358 {
359 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
360 AV *avent = newAV ();
361
362 av_extend (avent, 2);
363
364 if (!sv_type [ent->type])
365 {
366 sv_type [ent->type] = newSViv (ent->type);
367 SvREADONLY_on (sv_type [ent->type]);
368 }
369
370 av_store (avent, 0, namesv);
371 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
372 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
373
374 av_store (av, i, newRV_noinc ((SV *)avent));
375 }
376 else
377 av_store (av, i, namesv);
378
379 ++ent;
380 }
381 else
382 {
383 SV *name = newSVpv (names, 0);
384 av_store (av, i, name);
385 names += SvCUR (name) + 1;
386 }
387 }
388
389 rv = sv_2mortal (newRV_noinc ((SV *)av));
390 }
391
392 PUSHs (rv);
393
394 if (req->int1 & EIO_READDIR_CUSTOM1)
395 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
396 }
397 break;
398
399 case EIO_OPEN:
400 {
401 /* convert fd to fh */
402 SV *fh = &PL_sv_undef;
403
404 if (req->result >= 0)
405 {
406 GV *gv = (GV *)sv_newmortal ();
407 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
408 char sym [64];
409 int symlen;
410
411 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
412 gv_init (gv, aio_stash, sym, symlen, 0);
413
414 symlen = snprintf (
415 sym,
416 sizeof (sym),
417 "%s&=%d",
418 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
419 (int)req->result
420 );
421
422 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
423 fh = (SV *)gv;
424 }
425
426 PUSHs (fh);
427 }
428 break;
429
430 case EIO_STATVFS:
431 case EIO_FSTATVFS:
432 {
433 SV *rv = &PL_sv_undef;
434
435 if (req->result >= 0)
436 {
437 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
438 HV *hv = newHV ();
439
440 rv = sv_2mortal (newRV_noinc ((SV *)hv));
441
442 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
443 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
444 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
445 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
446 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
447 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
448 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
449 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
450 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
451 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
452 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
453 }
454
455 PUSHs (rv);
456 }
457
458 break;
459
460 case EIO_GROUP:
461 req->int1 = 2; /* mark group as finished */
462
463 if (req->sv1)
464 {
465 int i;
466 AV *av = (AV *)req->sv1;
467
468 EXTEND (SP, AvFILL (av) + 1);
469 for (i = 0; i <= AvFILL (av); ++i)
470 PUSHs (*av_fetch (av, i, 0));
471 }
472 break;
473
474 case EIO_NOP:
475 case EIO_BUSY:
476 break;
477
478 case EIO_READLINK:
479 if (req->result > 0)
480 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
481 break;
482
483 case EIO_STAT:
484 case EIO_LSTAT:
485 case EIO_FSTAT:
486 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
487 PL_laststatval = req->result;
488 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
489 PUSHs (sv_result);
490 break;
491
492 case EIO_READ:
493 {
494 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
495 *SvEND (req->sv2) = 0;
496 SvPOK_only (req->sv2);
497 SvSETMAGIC (req->sv2);
498 PUSHs (sv_result);
499 }
500 break;
501
502 case EIO_DUP2:
503 if (req->result > 0)
504 SvIV_set (sv_result, 0);
505 /* FALLTHROUGH */
506
507 default:
508 PUSHs (sv_result);
509 break;
510 }
511
512 errno = req->errorno;
513
514 PUTBACK;
515 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
516 SPAGAIN;
517
518 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
519 SvREFCNT_dec (sv_result);
520 else
521 sv_result_cache = sv_result;
522
523 FREETMPS;
524 LEAVE;
525
526 PUTBACK;
356 } 527 }
357 while (type != REQ_QUIT); 528
529 return !!SvTRUE (ERRSV);
530}
531
532static void req_destroy (aio_req req)
533{
534 if (req->self)
535 {
536 sv_unmagic (req->self, PERL_MAGIC_ext);
537 SvREFCNT_dec (req->self);
538 }
539
540 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2);
542 SvREFCNT_dec (req->callback);
543
544 Safefree (req);
545}
546
547static void req_cancel_subs (aio_req grp)
548{
549 aio_req sub;
550
551 if (grp->type != EIO_GROUP)
552 return;
553
554 SvREFCNT_dec (grp->sv2);
555 grp->sv2 = 0;
556
557 eio_grp_cancel (grp);
558}
559
560static void
561create_respipe (void)
562{
563 if (s_epipe_renew (&respipe))
564 croak ("IO::AIO: unable to initialize result pipe");
565}
566
567static void poll_wait (void)
568{
569 while (eio_nreqs ())
570 {
571 int size;
572
573 X_LOCK (reslock);
574 size = res_queue.size;
575 X_UNLOCK (reslock);
576
577 if (size)
578 return;
579
580 etp_maybe_start_thread ();
581
582 s_epipe_wait (&respipe);
583 }
584}
585
586static int poll_cb (void)
587{
588 for (;;)
589 {
590 int res = eio_poll ();
591
592 if (res > 0)
593 croak (0);
594
595 if (!max_outstanding || max_outstanding > eio_nreqs ())
596 return res;
597
598 poll_wait ();
599 }
600}
601
602static void atfork_child (void)
603{
604 create_respipe ();
605}
606
607/*****************************************************************************/
608
609#if !_POSIX_MAPPED_FILES
610# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
611# define munmap(addr,length) (errno = ENOSYS, -1)
612#endif
613
614#define MMAP_MAGIC PERL_MAGIC_ext
615
616static int
617mmap_free (pTHX_ SV *sv, MAGIC *mg)
618{
619 int old_errno = errno;
620 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
621 errno = old_errno;
622
623 mg->mg_obj = 0; /* just in case */
624
625 SvREADONLY_off (sv);
626 SvCUR_set (sv, 0);
627 SvLEN_set (sv, 0);
628 SvPVX (sv) = 0;
629 SvOK_off (sv);
358 630
359 return 0; 631 return 0;
360} 632}
361 633
634static MGVTBL mmap_vtbl = {
635 0, 0, 0, 0, mmap_free
636};
637
638/*****************************************************************************/
639
640static SV *
641get_cb (SV *cb_sv)
642{
643 SvGETMAGIC (cb_sv);
644 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
645}
646
647#define dREQ \
648 SV *cb_cv; \
649 aio_req req; \
650 int req_pri = next_pri; \
651 next_pri = EIO_PRI_DEFAULT; \
652 \
653 cb_cv = get_cb (callback); \
654 \
655 Newz (0, req, 1, eio_req); \
656 if (!req) \
657 croak ("out of memory during eio_req allocation"); \
658 \
659 req->callback = SvREFCNT_inc (cb_cv); \
660 req->pri = req_pri
661
662#define REQ_SEND \
663 PUTBACK; \
664 req_submit (req); \
665 SPAGAIN; \
666 \
667 if (GIMME_V != G_VOID) \
668 XPUSHs (req_sv (req, aio_req_stash));
669
362MODULE = IO::AIO PACKAGE = IO::AIO 670MODULE = IO::AIO PACKAGE = IO::AIO
363 671
672PROTOTYPES: ENABLE
673
364BOOT: 674BOOT:
365{ 675{
366 if (pipe (respipe)) 676 static const struct {
367 croak ("unable to initialize result pipe"); 677 const char *name;
678 IV iv;
679 } *civ, const_iv[] = {
680# define const_niv(name, value) { # name, (IV) value },
681# define const_iv(name) { # name, (IV) name },
682# define const_eio(name) { # name, (IV) EIO_ ## name },
683 const_iv (EXDEV)
684 const_iv (ENOSYS)
685 const_iv (O_RDONLY)
686 const_iv (O_WRONLY)
687 const_iv (O_RDWR)
688 const_iv (O_CREAT)
689 const_iv (O_TRUNC)
690 const_iv (O_EXCL)
691 const_iv (O_APPEND)
692#ifndef _WIN32
693 const_iv (S_IFIFO)
694#endif
695 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
696 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
697 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
698 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
699 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
700 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
368 701
369 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 702 const_iv (ST_RDONLY)
370 croak ("cannot set result pipe to nonblocking mode"); 703 const_iv (ST_NOSUID)
704 const_iv (ST_NODEV)
705 const_iv (ST_NOEXEC)
706 const_iv (ST_SYNCHRONOUS)
707 const_iv (ST_MANDLOCK)
708 const_iv (ST_WRITE)
709 const_iv (ST_APPEND)
710 const_iv (ST_IMMUTABLE)
711 const_iv (ST_NOATIME)
712 const_iv (ST_NODIRATIME)
713 const_iv (ST_RELATIME)
371 714
372 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 715 const_iv (PROT_EXEC)
373 croak ("cannot set result pipe to nonblocking mode"); 716 const_iv (PROT_NONE)
374} 717 const_iv (PROT_READ)
718 const_iv (PROT_WRITE)
375 719
720 /*const_iv (MAP_FIXED)*/
721 const_iv (MAP_PRIVATE)
722 const_iv (MAP_SHARED)
723 const_iv (MAP_ANONYMOUS)
724
725 /* linuxish */
726 const_iv (MAP_HUGETLB)
727 const_iv (MAP_LOCKED)
728 const_iv (MAP_NORESERVE)
729 const_iv (MAP_POPULATE)
730 const_iv (MAP_NONBLOCK)
731
732 const_iv (MCL_FUTURE)
733 const_iv (MCL_CURRENT)
734
735 const_eio (MS_ASYNC)
736 const_eio (MS_INVALIDATE)
737 const_eio (MS_SYNC)
738
739 const_eio (MT_MODIFY)
740
741 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
742 const_eio (SYNC_FILE_RANGE_WRITE)
743 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
744
745 const_eio (READDIR_DENTS)
746 const_eio (READDIR_DIRS_FIRST)
747 const_eio (READDIR_STAT_ORDER)
748 const_eio (READDIR_FOUND_UNKNOWN)
749
750 const_eio (DT_UNKNOWN)
751 const_eio (DT_FIFO)
752 const_eio (DT_CHR)
753 const_eio (DT_DIR)
754 const_eio (DT_BLK)
755 const_eio (DT_REG)
756 const_eio (DT_LNK)
757 const_eio (DT_SOCK)
758 const_eio (DT_WHT)
759 };
760
761 aio_stash = gv_stashpv ("IO::AIO" , 1);
762 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
763 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
764
765 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
766 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
767
768 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
769
770 create_respipe ();
771
772 if (eio_init (want_poll, done_poll) < 0)
773 croak ("IO::AIO: unable to initialise eio library");
774
775 /* atfork child called in fifo order, so before eio's handler */
776 X_THREAD_ATFORK (0, 0, atfork_child);
777}
778
376void 779void
377min_parallel(nthreads) 780max_poll_reqs (int nreqs)
378 int nthreads
379 PROTOTYPE: $ 781 PROTOTYPE: $
380 CODE: 782 CODE:
381 while (nthreads > started) 783 eio_set_max_poll_reqs (nreqs);
382 start_thread ();
383 784
384void 785void
385max_parallel(nthreads) 786max_poll_time (double nseconds)
386 int nthreads
387 PROTOTYPE: $ 787 PROTOTYPE: $
388 CODE: 788 CODE:
789 eio_set_max_poll_time (nseconds);
790
791void
792min_parallel (int nthreads)
793 PROTOTYPE: $
794 CODE:
795 eio_set_min_parallel (nthreads);
796
797void
798max_parallel (int nthreads)
799 PROTOTYPE: $
800 CODE:
801 eio_set_max_parallel (nthreads);
802
803void
804max_idle (int nthreads)
805 PROTOTYPE: $
806 CODE:
807 eio_set_max_idle (nthreads);
808
809void
810max_outstanding (int maxreqs)
811 PROTOTYPE: $
812 CODE:
813 max_outstanding = maxreqs;
814
815void
816aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
817 PROTOTYPE: $$$;$
818 PPCODE:
389{ 819{
390 int cur = started; 820 dREQ;
391 while (cur > nthreads) 821
392 { 822 req->type = EIO_OPEN;
393 end_thread (); 823 req->sv1 = newSVsv (pathname);
394 cur--; 824 req->ptr1 = SvPVbyte_nolen (req->sv1);
825 req->int1 = flags;
826 req->int2 = mode;
827
828 REQ_SEND;
829}
830
831void
832aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
833 PROTOTYPE: $;$
834 ALIAS:
835 aio_fsync = EIO_FSYNC
836 aio_fdatasync = EIO_FDATASYNC
837 PPCODE:
838{
839 int fd = s_fileno_croak (fh, 0);
840 dREQ;
841
842 req->type = ix;
843 req->sv1 = newSVsv (fh);
844 req->int1 = fd;
845
846 REQ_SEND (req);
847}
848
849void
850aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
851 PROTOTYPE: $$$$;$
852 PPCODE:
853{
854 int fd = s_fileno_croak (fh, 0);
855 dREQ;
856
857 req->type = EIO_SYNC_FILE_RANGE;
858 req->sv1 = newSVsv (fh);
859 req->int1 = fd;
860 req->offs = offset;
861 req->size = nbytes;
862 req->int2 = flags;
863
864 REQ_SEND (req);
865}
866
867void
868aio_close (SV *fh, SV *callback=&PL_sv_undef)
869 PROTOTYPE: $;$
870 PPCODE:
871{
872 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
873 int fd = s_fileno_croak (fh, 0);
874 dREQ;
875
876 if (close_pipe < 0)
877 {
878 int pipefd [2];
879
880 if (pipe (pipefd) < 0
881 || close (pipefd [1]) < 0
882 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
883 abort (); /*D*/
884
885 close_pipe = pipefd [0];
395 } 886 }
396 887
397 while (started > nthreads) 888 req->type = EIO_DUP2;
889 req->int1 = close_pipe;
890 req->sv2 = newSVsv (fh);
891 req->int2 = fd;
892
893 REQ_SEND (req);
894}
895
896void
897aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
898 ALIAS:
899 aio_read = EIO_READ
900 aio_write = EIO_WRITE
901 PROTOTYPE: $$$$$;$
902 PPCODE:
903{
904 STRLEN svlen;
905 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
906 char *svptr = SvPVbyte (data, svlen);
907 UV len = SvUV (length);
908
909 if (dataoffset < 0)
910 dataoffset += svlen;
911
912 if (dataoffset < 0 || dataoffset > svlen)
913 croak ("dataoffset outside of data scalar");
914
915 if (ix == EIO_WRITE)
398 { 916 {
399 poll_wait (); 917 /* write: check length and adjust. */
400 poll_cb (aTHX); 918 if (!SvOK (length) || len + dataoffset > svlen)
401 } 919 len = svlen - dataoffset;
402}
403
404void
405aio_open(pathname,flags,mode,callback)
406 SV * pathname
407 int flags
408 int mode
409 SV * callback
410 PROTOTYPE: $$$$
411 CODE:
412{
413 aio_req req;
414
415 Newz (0, req, 1, aio_cb);
416
417 if (!req)
418 croak ("out of memory during aio_req allocation");
419
420 req->type = REQ_OPEN;
421 req->data = newSVsv (pathname);
422 req->dataptr = SvPV_nolen (req->data);
423 req->fd = flags;
424 req->mode = mode;
425 req->callback = SvREFCNT_inc (callback);
426
427 send_req (req);
428}
429
430void
431aio_close(fh,callback)
432 InputStream fh
433 SV * callback
434 PROTOTYPE: $$
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 } 920 }
534 else 921 else
535 { 922 {
536 req->type = REQ_FSTAT; 923 /* read: check type and grow scalar as necessary */
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 924 SvUPGRADE (data, SVt_PV);
925 svptr = SvGROW (data, len + dataoffset + 1);
538 } 926 }
539 927
928 {
929 dREQ;
930
931 req->type = ix;
932 req->sv1 = newSVsv (fh);
933 req->int1 = fd;
934 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
935 req->size = len;
540 req->callback = SvREFCNT_inc (callback); 936 req->sv2 = SvREFCNT_inc (data);
937 req->ptr2 = (char *)svptr + dataoffset;
938 req->stroffset = dataoffset;
541 939
542 send_req (req); 940 if (!SvREADONLY (data))
543} 941 {
942 SvREADONLY_on (data);
943 req->flags |= FLAG_SV2_RO_OFF;
944 }
544 945
946 REQ_SEND;
947 }
948}
949
545void 950void
546aio_unlink(pathname,callback) 951aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
547 SV * pathname
548 SV * callback
549 PROTOTYPE: $$ 952 PROTOTYPE: $$;$
953 PPCODE:
954{
955 SV *data;
956 dREQ;
957
958 req->type = EIO_READLINK;
959 req->sv1 = newSVsv (path);
960 req->ptr1 = SvPVbyte_nolen (req->sv1);
961
962 REQ_SEND;
963}
964
965void
966aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
967 PROTOTYPE: $$$$;$
968 PPCODE:
969{
970 int ifd = s_fileno_croak (in_fh , 0);
971 int ofd = s_fileno_croak (out_fh, 1);
972 dREQ;
973
974 req->type = EIO_SENDFILE;
975 req->sv1 = newSVsv (out_fh);
976 req->int1 = ofd;
977 req->sv2 = newSVsv (in_fh);
978 req->int2 = ifd;
979 req->offs = in_offset;
980 req->size = length;
981
982 REQ_SEND;
983}
984
985void
986aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
987 PROTOTYPE: $$$;$
988 PPCODE:
989{
990 int fd = s_fileno_croak (fh, 0);
991 dREQ;
992
993 req->type = EIO_READAHEAD;
994 req->sv1 = newSVsv (fh);
995 req->int1 = fd;
996 req->offs = offset;
997 req->size = length;
998
999 REQ_SEND;
1000}
1001
1002void
1003aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1004 ALIAS:
1005 aio_stat = EIO_STAT
1006 aio_lstat = EIO_LSTAT
1007 aio_statvfs = EIO_STATVFS
550 CODE: 1008 PPCODE:
551{ 1009{
552 aio_req req; 1010 dREQ;
1011
1012 req->sv1 = newSVsv (fh_or_path);
1013
1014 if (SvPOK (req->sv1))
1015 {
1016 req->type = ix;
1017 req->ptr1 = SvPVbyte_nolen (req->sv1);
1018 }
1019 else
1020 {
1021 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1022 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1023 }
1024
1025 REQ_SEND;
1026}
1027
1028void
1029aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1030 PPCODE:
1031{
1032 dREQ;
1033
1034 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1035 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1036 req->sv1 = newSVsv (fh_or_path);
1037
1038 if (SvPOK (req->sv1))
1039 {
1040 req->type = EIO_UTIME;
1041 req->ptr1 = SvPVbyte_nolen (req->sv1);
1042 }
1043 else
1044 {
1045 req->type = EIO_FUTIME;
1046 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1047 }
1048
1049 REQ_SEND;
1050}
1051
1052void
1053aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1054 PPCODE:
1055{
1056 dREQ;
1057
1058 req->sv1 = newSVsv (fh_or_path);
1059 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1060
1061 if (SvPOK (req->sv1))
1062 {
1063 req->type = EIO_TRUNCATE;
1064 req->ptr1 = SvPVbyte_nolen (req->sv1);
1065 }
1066 else
1067 {
1068 req->type = EIO_FTRUNCATE;
1069 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1070 }
1071
1072 REQ_SEND;
1073}
1074
1075void
1076aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1077 ALIAS:
1078 aio_chmod = EIO_CHMOD
1079 aio_mkdir = EIO_MKDIR
1080 PPCODE:
1081{
1082 dREQ;
1083
1084 req->int2 = mode;
1085 req->sv1 = newSVsv (fh_or_path);
1086
1087 if (SvPOK (req->sv1))
1088 {
1089 req->type = ix;
1090 req->ptr1 = SvPVbyte_nolen (req->sv1);
1091 }
1092 else
1093 {
1094 req->type = EIO_FCHMOD;
1095 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1096 }
1097
1098 REQ_SEND;
1099}
1100
1101void
1102aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1103 PPCODE:
1104{
1105 dREQ;
1106
1107 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1108 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1109 req->sv1 = newSVsv (fh_or_path);
1110
1111 if (SvPOK (req->sv1))
1112 {
1113 req->type = EIO_CHOWN;
1114 req->ptr1 = SvPVbyte_nolen (req->sv1);
1115 }
1116 else
1117 {
1118 req->type = EIO_FCHOWN;
1119 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1120 }
1121
1122 REQ_SEND;
1123}
1124
1125void
1126aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1127 PPCODE:
1128{
1129 dREQ;
553 1130
554 Newz (0, req, 1, aio_cb); 1131 req->type = EIO_READDIR;
1132 req->sv1 = newSVsv (pathname);
1133 req->ptr1 = SvPVbyte_nolen (req->sv1);
1134 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1135
1136 if (flags & EIO_READDIR_DENTS)
1137 req->int1 |= EIO_READDIR_CUSTOM2;
1138
1139 REQ_SEND;
1140}
1141
1142void
1143aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1144 ALIAS:
1145 aio_unlink = EIO_UNLINK
1146 aio_rmdir = EIO_RMDIR
1147 aio_readdir = EIO_READDIR
1148 PPCODE:
1149{
1150 dREQ;
555 1151
556 if (!req) 1152 req->type = ix;
557 croak ("out of memory during aio_req allocation"); 1153 req->sv1 = newSVsv (pathname);
1154 req->ptr1 = SvPVbyte_nolen (req->sv1);
1155
1156 REQ_SEND;
1157}
1158
1159void
1160aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1161 ALIAS:
1162 aio_link = EIO_LINK
1163 aio_symlink = EIO_SYMLINK
1164 aio_rename = EIO_RENAME
1165 PPCODE:
1166{
1167 dREQ;
558 1168
559 req->type = REQ_UNLINK; 1169 req->type = ix;
560 req->data = newSVsv (pathname); 1170 req->sv1 = newSVsv (oldpath);
561 req->dataptr = SvPV_nolen (req->data); 1171 req->ptr1 = SvPVbyte_nolen (req->sv1);
562 req->callback = SvREFCNT_inc (callback); 1172 req->sv2 = newSVsv (newpath);
1173 req->ptr2 = SvPVbyte_nolen (req->sv2);
563 1174
564 send_req (req); 1175 REQ_SEND;
565} 1176}
1177
1178void
1179aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1180 PPCODE:
1181{
1182 dREQ;
1183
1184 req->type = EIO_MKNOD;
1185 req->sv1 = newSVsv (pathname);
1186 req->ptr1 = SvPVbyte_nolen (req->sv1);
1187 req->int2 = (mode_t)mode;
1188 req->offs = dev;
1189
1190 REQ_SEND;
1191}
1192
1193void
1194aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1195 ALIAS:
1196 aio_mtouch = EIO_MTOUCH
1197 aio_msync = EIO_MSYNC
1198 PROTOTYPE: $$$$;$
1199 PPCODE:
1200{
1201 STRLEN svlen;
1202 UV len = SvUV (length);
1203 char *svptr = SvPVbyte (data, svlen);
1204
1205 if (offset < 0)
1206 offset += svlen;
1207
1208 if (offset < 0 || offset > svlen)
1209 croak ("offset outside of scalar");
1210
1211 if (!SvOK (length) || len + offset > svlen)
1212 len = svlen - offset;
1213
1214 {
1215 dREQ;
1216
1217 req->type = ix;
1218 req->size = len;
1219 req->sv2 = SvREFCNT_inc (data);
1220 req->ptr2 = (char *)svptr + offset;
1221 req->int1 = flags;
1222
1223 REQ_SEND;
1224 }
1225}
1226
1227void
1228aio_busy (double delay, SV *callback=&PL_sv_undef)
1229 PPCODE:
1230{
1231 dREQ;
1232
1233 req->type = EIO_BUSY;
1234 req->nv1 = delay < 0. ? 0. : delay;
1235
1236 REQ_SEND;
1237}
1238
1239void
1240aio_group (SV *callback=&PL_sv_undef)
1241 PROTOTYPE: ;$
1242 PPCODE:
1243{
1244 dREQ;
1245
1246 req->type = EIO_GROUP;
1247
1248 req_submit (req);
1249 XPUSHs (req_sv (req, aio_grp_stash));
1250}
1251
1252void
1253aio_nop (SV *callback=&PL_sv_undef)
1254 ALIAS:
1255 aio_nop = EIO_NOP
1256 aio_sync = EIO_SYNC
1257 PPCODE:
1258{
1259 dREQ;
1260
1261 req->type = ix;
1262
1263 REQ_SEND;
1264}
1265
1266int
1267aioreq_pri (int pri = 0)
1268 PROTOTYPE: ;$
1269 CODE:
1270 RETVAL = next_pri;
1271 if (items > 0)
1272 {
1273 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1274 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1275 next_pri = pri;
1276 }
1277 OUTPUT:
1278 RETVAL
1279
1280void
1281aioreq_nice (int nice = 0)
1282 CODE:
1283 nice = next_pri - nice;
1284 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1285 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1286 next_pri = nice;
1287
1288void
1289flush ()
1290 PROTOTYPE:
1291 CODE:
1292 while (eio_nreqs ())
1293 {
1294 poll_wait ();
1295 poll_cb ();
1296 }
1297
1298int
1299poll()
1300 PROTOTYPE:
1301 CODE:
1302 poll_wait ();
1303 RETVAL = poll_cb ();
1304 OUTPUT:
1305 RETVAL
566 1306
567int 1307int
568poll_fileno() 1308poll_fileno()
569 PROTOTYPE: 1309 PROTOTYPE:
570 CODE: 1310 CODE:
571 RETVAL = respipe [0]; 1311 RETVAL = s_epipe_fd (&respipe);
572 OUTPUT: 1312 OUTPUT:
573 RETVAL 1313 RETVAL
574 1314
575int 1315int
576poll_cb(...) 1316poll_cb(...)
577 PROTOTYPE: 1317 PROTOTYPE:
578 CODE: 1318 CODE:
579 RETVAL = poll_cb (aTHX); 1319 RETVAL = poll_cb ();
580 OUTPUT: 1320 OUTPUT:
581 RETVAL 1321 RETVAL
582 1322
583void 1323void
584poll_wait() 1324poll_wait()
585 PROTOTYPE: 1325 PROTOTYPE:
586 CODE: 1326 CODE:
587 if (nreqs)
588 poll_wait (); 1327 poll_wait ();
589 1328
590int 1329int
591nreqs() 1330nreqs()
592 PROTOTYPE: 1331 PROTOTYPE:
593 CODE: 1332 CODE:
594 RETVAL = nreqs; 1333 RETVAL = eio_nreqs ();
595 OUTPUT: 1334 OUTPUT:
596 RETVAL 1335 RETVAL
597 1336
1337int
1338nready()
1339 PROTOTYPE:
1340 CODE:
1341 RETVAL = eio_nready ();
1342 OUTPUT:
1343 RETVAL
1344
1345int
1346npending()
1347 PROTOTYPE:
1348 CODE:
1349 RETVAL = eio_npending ();
1350 OUTPUT:
1351 RETVAL
1352
1353int
1354nthreads()
1355 PROTOTYPE:
1356 CODE:
1357 RETVAL = eio_nthreads ();
1358 OUTPUT:
1359 RETVAL
1360
1361int
1362fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1363 PROTOTYPE: $$$$
1364 CODE:
1365#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1366 RETVAL = posix_fadvise (fh, offset, length, advice);
1367#else
1368 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1369#endif
1370 OUTPUT:
1371 RETVAL
1372
1373ssize_t
1374sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1375 PROTOTYPE: $$$$
1376 CODE:
1377 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1378 OUTPUT:
1379 RETVAL
1380
1381void
1382mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1383 PROTOTYPE: $$$$$;$
1384 PPCODE:
1385 sv_unmagic (scalar, MMAP_MAGIC);
1386{
1387 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1388 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1389 if (addr == (void *)-1)
1390 XSRETURN_NO;
1391
1392 /* we store the length in mg_obj, as namlen is I32 :/ */
1393 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1394 ->mg_obj = (SV *)length;
1395
1396 SvUPGRADE (scalar, SVt_PV); /* nop... */
1397 if (!(prot & PROT_WRITE))
1398 SvREADONLY_on (scalar);
1399
1400 SvPVX (scalar) = (char *)addr;
1401 SvCUR_set (scalar, length);
1402 SvLEN_set (scalar, 0);
1403 SvPOK_only (scalar);
1404
1405 XSRETURN_YES;
1406}
1407
1408void
1409munmap (SV *scalar)
1410 PROTOTYPE: $
1411 CODE:
1412 sv_unmagic (scalar, MMAP_MAGIC);
1413
1414int
1415mlockall (int flags)
1416 PROTOTYPE: $
1417 CODE:
1418#if _POSIX_MEMLOCK
1419#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1420 extern int mallopt (int, int);
1421 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1422#endif
1423 mlockall (flags);
1424#else
1425 RETVAL = -1;
1426 errno = ENOSYS;
1427#endif
1428 OUTPUT:
1429 RETVAL
1430
1431int
1432munlockall ()
1433 PROTOTYPE:
1434 CODE:
1435#if _POSIX_MEMLOCK
1436 munlockall ();
1437#else
1438 RETVAL = -1;
1439 errno = ENOSYS;
1440#endif
1441 OUTPUT:
1442 RETVAL
1443
1444void _on_next_submit (SV *cb)
1445 CODE:
1446 SvREFCNT_dec (on_next_submit);
1447 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1448
1449PROTOTYPES: DISABLE
1450
1451MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452
1453void
1454cancel (aio_req_ornot req)
1455 CODE:
1456 eio_cancel (req);
1457
1458void
1459cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460 PPCODE:
1461{
1462 if (GIMME_V != G_VOID)
1463 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1464
1465 if (items > 1)
1466 {
1467 SV *cb_cv =get_cb (callback);
1468
1469 SvREFCNT_dec (req->callback);
1470 req->callback = SvREFCNT_inc (cb_cv);
1471 }
1472}
1473
1474MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1475
1476void
1477add (aio_req grp, ...)
1478 PPCODE:
1479{
1480 int i;
1481
1482 if (grp->int1 == 2)
1483 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484
1485 for (i = 1; i < items; ++i )
1486 {
1487 aio_req req;
1488
1489 if (GIMME_V != G_VOID)
1490 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1491
1492 req = SvAIO_REQ (ST (i));
1493
1494 if (req)
1495 eio_grp_add (grp, req);
1496 }
1497}
1498
1499void
1500cancel_subs (aio_req_ornot req)
1501 CODE:
1502 req_cancel_subs (req);
1503
1504void
1505result (aio_req grp, ...)
1506 CODE:
1507{
1508 int i;
1509 AV *av;
1510
1511 grp->errorno = errno;
1512
1513 av = newAV ();
1514 av_extend (av, items - 1);
1515
1516 for (i = 1; i < items; ++i )
1517 av_push (av, newSVsv (ST (i)));
1518
1519 SvREFCNT_dec (grp->sv1);
1520 grp->sv1 = (SV *)av;
1521}
1522
1523void
1524errno (aio_req grp, int errorno = errno)
1525 CODE:
1526 grp->errorno = errorno;
1527
1528void
1529limit (aio_req grp, int limit)
1530 CODE:
1531 eio_grp_limit (grp, limit);
1532
1533void
1534feed (aio_req grp, SV *callback=&PL_sv_undef)
1535 CODE:
1536{
1537 SvREFCNT_dec (grp->sv2);
1538 grp->sv2 = newSVsv (callback);
1539 grp->feed = aio_grp_feed;
1540
1541 if (grp->int2 <= 0)
1542 grp->int2 = 2;
1543
1544 eio_grp_limit (grp, grp->int2);
1545}
1546

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