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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "schmorp.h"
9 10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
10#include <sys/types.h> 14#include <sys/types.h>
11#include <sys/stat.h> 15#include <sys/stat.h>
12 16#include <sys/statvfs.h>
13#include <unistd.h> 17#include <limits.h>
14#include <fcntl.h> 18#include <fcntl.h>
15#include <signal.h>
16#include <sched.h> 19#include <sched.h>
17 20
18#include <pthread.h> 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
22# include <sys/mman.h>
23#endif
19 24
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25#if !_POSIX_MAPPED_FILES
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 27# define munmap(addr,length) (errno = ENOSYS, -1)
28#endif
23 29
24#if __ia64 30/* perl namespace pollution */
25# define STACKSIZE 65536 31#undef VERSION
32
33#ifdef _WIN32
34
35# define EIO_STRUCT_DIRENT Direntry_t
36# undef malloc
37# undef free
38
39// perl overrides all those nice win32 functions
40# undef open
41# undef read
42# undef write
43# undef send
44# undef recv
45# undef stat
46# undef fstat
47# define lstat stat
48# undef truncate
49# undef ftruncate
50# undef open
51# undef close
52# undef unlink
53# undef rmdir
54# undef rename
55# undef lseek
56
57# define chown(a,b,c) (errno = ENOSYS, -1)
58# define fchown(a,b,c) (errno = ENOSYS, -1)
59# define fchmod(a,b) (errno = ENOSYS, -1)
60# define symlink(a,b) (errno = ENOSYS, -1)
61# define readlink(a,b,c) (errno = ENOSYS, -1)
62# define mknod(a,b,c) (errno = ENOSYS, -1)
63# define truncate(a,b) (errno = ENOSYS, -1)
64# define ftruncate(fd,o) chsize ((fd), (o))
65# define fsync(fd) _commit (fd)
66# define opendir(fd) (errno = ENOSYS, 0)
67# define readdir(fd) (errno = ENOSYS, -1)
68# define closedir(fd) (errno = ENOSYS, -1)
69# define mkdir(a,b) mkdir (a)
70
26#else 71#else
27# define STACKSIZE 4096 72
73# include <sys/time.h>
74# include <sys/select.h>
75# include <unistd.h>
76# include <utime.h>
77# include <signal.h>
78# define EIO_STRUCT_DIRENT struct dirent
79
80#endif
81
82/* perl stupidly overrides readdir and maybe others */
83/* with thread-unsafe versions, imagine that :( */
84#undef readdir
85#undef opendir
86#undef closedir
87
88#define EIO_STRUCT_STAT Stat_t
89
90/* use NV for 32 bit perls as it allows larger offsets */
91#if IVSIZE >= 8
92# define VAL64 IV
93# define SvVAL64 SvIV
94# define newSVval64 newSViv
95#else
96# define VAL64 NV
97# define SvVAL64 SvNV
98# define newSVval64 newSVnv
99#endif
100
101/*****************************************************************************/
102
103#if __GNUC__ >= 3
104# define expect(expr,value) __builtin_expect ((expr),(value))
105#else
106# define expect(expr,value) (expr)
107#endif
108
109#define expect_false(expr) expect ((expr) != 0, 0)
110#define expect_true(expr) expect ((expr) != 0, 1)
111
112/*****************************************************************************/
113
114typedef SV SV8; /* byte-sv, used for argument-checking */
115typedef int aio_rfd; /* read file desriptor */
116typedef int aio_wfd; /* write file descriptor */
117
118static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
119
120#define EIO_REQ_MEMBERS \
121 SV *callback; \
122 SV *sv1, *sv2; \
123 STRLEN stroffset; \
124 SV *self;
125
126#define EIO_NO_WRAPPERS 1
127
128#include "libeio/eio.h"
129
130#ifndef POSIX_FADV_NORMAL
131# define POSIX_FADV_NORMAL 0
132# define NO_FADVISE 1
133#endif
134#ifndef POSIX_FADV_SEQUENTIAL
135# define POSIX_FADV_SEQUENTIAL 0
136#endif
137#ifndef POSIX_FADV_RANDOM
138# define POSIX_FADV_RANDOM 0
139#endif
140#ifndef POSIX_FADV_NOREUSE
141# define POSIX_FADV_NOREUSE 0
142#endif
143#ifndef POSIX_FADV_WILLNEED
144# define POSIX_FADV_WILLNEED 0
145#endif
146#ifndef POSIX_FADV_DONTNEED
147# define POSIX_FADV_DONTNEED 0
148#endif
149
150#ifndef ST_NODEV
151# define ST_NODEV 0
152#endif
153#ifndef ST_NOEXEC
154# define ST_NOEXEC 0
155#endif
156#ifndef ST_SYNCHRONOUS
157# define ST_SYNCHRONOUS 0
158#endif
159#ifndef ST_MANDLOCK
160# define ST_MANDLOCK 0
161#endif
162#ifndef ST_WRITE
163# define ST_WRITE 0
164#endif
165#ifndef ST_APPEND
166# define ST_APPEND 0
167#endif
168#ifndef ST_IMMUTABLE
169# define ST_IMMUTABLE 0
170#endif
171#ifndef ST_NOATIME
172# define ST_NOATIME 0
173#endif
174#ifndef ST_NODIRATIME
175# define ST_NODIRATIME 0
176#endif
177#ifndef ST_RELATIME
178# define ST_RELATIME 0
179#endif
180
181#ifndef MCL_CURRENT
182# define MCL_CURRENT 0
183#endif
184#ifndef MCL_FUTURE
185# define MCL_FUTURE 0
186#endif
187
188#ifndef MAP_ANONYMOUS
189# ifdef MAP_ANON
190# define MAP_ANONYMOUS MAP_ANON
191# else
192# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 193# endif
194#endif
195#ifndef MAP_HUGETLB
196# define MAP_HUGETLB 0
197#endif
198#ifndef MAP_LOCKED
199# define MAP_LOCKED 0
200#endif
201#ifndef MAP_NORESERVE
202# define MAP_NORESERVE 0
203#endif
204#ifndef MAP_POPULATE
205# define MAP_POPULATE 0
206#endif
207#ifndef MAP_NONBLOCK
208# define MAP_NONBLOCK 0
209#endif
210
211#ifndef PAGESIZE
212# define PAGESIZE sysconf (_SC_PAGESIZE)
213#endif
214
215static int req_invoke (eio_req *req);
216#define EIO_FINISH(req) req_invoke (req)
217static void req_destroy (eio_req *grp);
218#define EIO_DESTROY(req) req_destroy (req)
29 219
30enum { 220enum {
31 REQ_QUIT, 221 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,
35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR, REQ_SYMLINK,
37 REQ_SYMLINK,
38}; 222};
39 223
40typedef struct aio_cb { 224#include "libeio/eio.c"
41 struct aio_cb *volatile next;
42 225
43 int type;
44
45 int fd;
46 off_t offset;
47 size_t length;
48 ssize_t result;
49 mode_t mode; /* open */
50 int errorno;
51 SV *data, *callback, *fh;
52 void *dataptr, *data2ptr;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb;
57
58typedef aio_cb *aio_req; 226typedef eio_req *aio_req;
227typedef eio_req *aio_req_ornot;
59 228
60static int started; 229static SV *on_next_submit;
61static volatile int nreqs; 230static int next_pri = EIO_PRI_DEFAULT;
62static int max_outstanding = 1<<30; 231static int max_outstanding;
63static int respipe [2];
64 232
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 233static s_epipe respipe;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
68static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
69 234
70static volatile aio_req reqs, reqe; /* queue start, queue end */ 235static void req_destroy (aio_req req);
71static volatile aio_req ress, rese; /* queue start, queue end */ 236static void req_cancel (aio_req req);
72 237
73static void 238static void want_poll (void)
74poll_wait ()
75{ 239{
76 if (nreqs && !ress) 240 /* write a dummy byte to the pipe so fh becomes ready */
241 s_epipe_signal (&respipe);
242}
243
244static void done_poll (void)
245{
246 /* read any signals sent by the worker threads */
247 s_epipe_drain (&respipe);
248}
249
250/* must be called at most once */
251static SV *req_sv (aio_req req, HV *stash)
252{
253 if (!req->self)
77 { 254 {
78 fd_set rfd; 255 req->self = (SV *)newHV ();
79 FD_ZERO(&rfd); 256 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
80 FD_SET(respipe [0], &rfd);
81
82 select (respipe [0] + 1, &rfd, 0, 0, 0);
83 } 257 }
84}
85 258
86static int 259 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
87poll_cb () 260}
261
262static aio_req SvAIO_REQ (SV *sv)
263{
264 MAGIC *mg;
265
266 if (!SvROK (sv)
267 || (SvSTASH (SvRV (sv)) != aio_grp_stash
268 && SvSTASH (SvRV (sv)) != aio_req_stash
269 && !sv_derived_from (sv, "IO::AIO::REQ")))
270 croak ("object of class IO::AIO::REQ expected");
271
272 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273
274 return mg ? (aio_req)mg->mg_ptr : 0;
275}
276
277static void aio_grp_feed (aio_req grp)
278{
279 if (grp->sv2 && SvOK (grp->sv2))
280 {
281 dSP;
282
283 ENTER;
284 SAVETMPS;
285 PUSHMARK (SP);
286 XPUSHs (req_sv (grp, aio_grp_stash));
287 PUTBACK;
288 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
289 SPAGAIN;
290 FREETMPS;
291 LEAVE;
292 }
293}
294
295static void req_submit (eio_req *req)
296{
297 eio_submit (req);
298
299 if (expect_false (on_next_submit))
300 {
301 dSP;
302 SV *cb = sv_2mortal (on_next_submit);
303
304 on_next_submit = 0;
305
306 PUSHMARK (SP);
307 PUTBACK;
308 call_sv (cb, G_DISCARD | G_EVAL);
309 }
310}
311
312static int req_invoke (eio_req *req)
88{ 313{
89 dSP; 314 dSP;
90 int count = 0;
91 aio_req req, prv;
92 315
93 pthread_mutex_lock (&reslock); 316 if (req->flags & FLAG_SV2_RO_OFF)
317 SvREADONLY_off (req->sv2);
94 318
95 { 319 if (!EIO_CANCELLED (req) && req->callback)
96 /* read any signals sent by the worker threads */
97 char buf [32];
98 while (read (respipe [0], buf, 32) == 32)
99 ;
100 }
101
102 req = ress;
103 ress = rese = 0;
104
105 pthread_mutex_unlock (&reslock);
106
107 while (req)
108 { 320 {
109 nreqs--; 321 ENTER;
322 SAVETMPS;
323 PUSHMARK (SP);
324 EXTEND (SP, 1);
110 325
111 if (req->type == REQ_QUIT) 326 switch (req->type)
112 started--;
113 else
114 { 327 {
115 int errorno = errno; 328 case EIO_READDIR:
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->fh)
126 SvREFCNT_dec (req->fh);
127
128 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
129 { 329 {
130 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 330 SV *rv = &PL_sv_undef;
131 PL_laststatval = req->result;
132 PL_statcache = *(req->statdata);
133 331
134 Safefree (req->statdata); 332 if (req->result >= 0)
333 {
334 int i;
335 char *names = (char *)req->ptr2;
336 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
337 AV *av = newAV ();
338
339 av_extend (av, req->result - 1);
340
341 for (i = 0; i < req->result; ++i)
342 {
343 if (req->int1 & EIO_READDIR_DENTS)
344 {
345 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
346
347 if (req->int1 & EIO_READDIR_CUSTOM2)
348 {
349 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
350 AV *avent = newAV ();
351
352 av_extend (avent, 2);
353
354 if (!sv_type [ent->type])
355 {
356 sv_type [ent->type] = newSViv (ent->type);
357 SvREADONLY_on (sv_type [ent->type]);
358 }
359
360 av_store (avent, 0, namesv);
361 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
362 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
363
364 av_store (av, i, newRV_noinc ((SV *)avent));
365 }
366 else
367 av_store (av, i, namesv);
368
369 ++ent;
370 }
371 else
372 {
373 SV *name = newSVpv (names, 0);
374 av_store (av, i, name);
375 names += SvCUR (name) + 1;
376 }
377 }
378
379 rv = sv_2mortal (newRV_noinc ((SV *)av));
380 }
381
382 PUSHs (rv);
383
384 if (req->int1 & EIO_READDIR_CUSTOM1)
385 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
135 } 386 }
387 break;
136 388
137 ENTER; 389 case EIO_OPEN:
138 PUSHMARK (SP);
139 XPUSHs (sv_2mortal (newSViv (req->result)));
140
141 if (req->type == REQ_OPEN)
142 { 390 {
143 /* convert fd to fh */ 391 /* convert fd to fh */
144 SV *fh; 392 SV *fh = &PL_sv_undef;
145 393
146 PUTBACK; 394 if (req->result >= 0)
147 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 395 {
148 SPAGAIN; 396 GV *gv = (GV *)sv_newmortal ();
397 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
398 char sym [64];
399 int symlen;
400
401 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
402 gv_init (gv, aio_stash, sym, symlen, 0);
149 403
150 fh = SvREFCNT_inc (POPs); 404 symlen = snprintf (
405 sym,
406 sizeof (sym),
407 "%s&=%d",
408 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
409 (int)req->result
410 );
151 411
412 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
413 fh = (SV *)gv;
414 }
415
152 PUSHMARK (SP); 416 PUSHs (fh);
153 XPUSHs (sv_2mortal (fh));
154 } 417 }
418 break;
155 419
156 if (SvOK (req->callback)) 420 case EIO_STATVFS:
421 case EIO_FSTATVFS:
157 { 422 {
158 PUTBACK; 423 SV *rv = &PL_sv_undef;
159 call_sv (req->callback, G_VOID | G_EVAL); 424
160 SPAGAIN; 425 if (req->result >= 0)
426 {
427 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
428 HV *hv = newHV ();
429
430 rv = sv_2mortal (newRV_noinc ((SV *)hv));
431
432 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
433 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
434 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
435 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
436 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
437 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
438 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
439 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
440 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
441 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
442 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
443 }
444
445 PUSHs (rv);
161 } 446 }
162 447
163 LEAVE;
164
165 if (req->callback)
166 SvREFCNT_dec (req->callback);
167
168 errno = errorno;
169 count++;
170 }
171
172 prv = req;
173 req = req->next;
174 Safefree (prv);
175
176 /* TODO: croak on errors? */
177 }
178
179 return count;
180}
181
182static void *aio_proc(void *arg);
183
184static void
185start_thread (void)
186{
187 sigset_t fullsigset, oldsigset;
188 pthread_t tid;
189 pthread_attr_t attr;
190
191 pthread_attr_init (&attr);
192 pthread_attr_setstacksize (&attr, STACKSIZE);
193 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
194
195 sigfillset (&fullsigset);
196 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
197
198 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
199 started++;
200
201 sigprocmask (SIG_SETMASK, &oldsigset, 0);
202}
203
204static void
205send_req (aio_req req)
206{
207 nreqs++;
208
209 pthread_mutex_lock (&reqlock);
210
211 req->next = 0;
212
213 if (reqe)
214 {
215 reqe->next = req;
216 reqe = req;
217 }
218 else
219 reqe = reqs = req;
220
221 pthread_cond_signal (&reqwait);
222 pthread_mutex_unlock (&reqlock);
223
224 while (nreqs > max_outstanding)
225 {
226 poll_wait ();
227 poll_cb ();
228 }
229}
230
231static void
232end_thread (void)
233{
234 aio_req req;
235 New (0, req, 1, aio_cb);
236 req->type = REQ_QUIT;
237
238 send_req (req);
239}
240
241
242static void min_parallel (int nthreads)
243{
244 while (nthreads > started)
245 start_thread ();
246}
247
248static void max_parallel (int nthreads)
249{
250 int cur = started;
251 while (cur > nthreads)
252 {
253 end_thread ();
254 cur--;
255 }
256
257 while (started > nthreads)
258 {
259 poll_wait ();
260 poll_cb ();
261 }
262}
263
264static int fork_started;
265
266static void atfork_prepare (void)
267{
268 pthread_mutex_lock (&frklock);
269
270 fork_started = started;
271
272 for (;;) {
273 while (nreqs)
274 {
275 poll_wait ();
276 poll_cb ();
277 }
278
279 max_parallel (0);
280
281 pthread_mutex_lock (&reqlock);
282
283 if (!nreqs && !started)
284 break; 448 break;
285 449
286 pthread_mutex_unlock (&reqlock); 450 case EIO_GROUP:
451 req->int1 = 2; /* mark group as finished */
287 452
288 min_parallel (fork_started);
289 }
290
291 pthread_mutex_lock (&reslock);
292
293 assert (!started);
294 assert (!nreqs);
295 assert (!reqs && !reqe);
296 assert (!ress && !rese);
297}
298
299static void atfork_parent (void)
300{
301 pthread_mutex_unlock (&reslock);
302 min_parallel (fork_started);
303 pthread_mutex_unlock (&reqlock);
304 pthread_mutex_unlock (&frklock);
305}
306
307static void atfork_child (void)
308{
309 reqs = reqe = 0;
310
311 atfork_parent ();
312}
313
314/*****************************************************************************/
315/* work around various missing functions */
316
317#if !HAVE_PREADWRITE
318# define pread aio_pread
319# define pwrite aio_pwrite
320
321/*
322 * make our pread/pwrite safe against themselves, but not against
323 * normal read/write by using a mutex. slows down execution a lot,
324 * but that's your problem, not mine.
325 */
326static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
327
328static ssize_t
329pread (int fd, void *buf, size_t count, off_t offset)
330{
331 ssize_t res;
332 off_t ooffset;
333
334 pthread_mutex_lock (&iolock);
335 ooffset = lseek (fd, 0, SEEK_CUR);
336 lseek (fd, offset, SEEK_SET);
337 res = read (fd, buf, count);
338 lseek (fd, ooffset, SEEK_SET);
339 pthread_mutex_unlock (&iolock);
340
341 return res;
342}
343
344static ssize_t
345pwrite (int fd, void *buf, size_t count, off_t offset)
346{
347 ssize_t res;
348 off_t ooffset;
349
350 pthread_mutex_lock (&iolock);
351 ooffset = lseek (fd, 0, SEEK_CUR);
352 lseek (fd, offset, SEEK_SET);
353 res = write (fd, buf, count);
354 lseek (fd, offset, SEEK_SET);
355 pthread_mutex_unlock (&iolock);
356
357 return res;
358}
359#endif
360
361#if !HAVE_FDATASYNC
362# define fdatasync fsync
363#endif
364
365#if !HAVE_READAHEAD
366# define readahead aio_readahead
367
368static char readahead_buf[4096];
369
370static ssize_t
371readahead (int fd, off_t offset, size_t count)
372{
373 while (count > 0)
374 {
375 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
376
377 pread (fd, readahead_buf, len, offset);
378 offset += len;
379 count -= len;
380 }
381
382 errno = 0;
383}
384#endif
385
386/*****************************************************************************/
387
388static void *
389aio_proc (void *thr_arg)
390{
391 aio_req req;
392 int type;
393
394 do
395 {
396 pthread_mutex_lock (&reqlock);
397
398 for (;;)
399 {
400 req = reqs;
401
402 if (reqs) 453 if (req->sv1)
454 {
455 int i;
456 AV *av = (AV *)req->sv1;
457
458 EXTEND (SP, AvFILL (av) + 1);
459 for (i = 0; i <= AvFILL (av); ++i)
460 PUSHs (*av_fetch (av, i, 0));
461 }
462 break;
463
464 case EIO_NOP:
465 case EIO_BUSY:
466 break;
467
468 case EIO_READLINK:
469 if (req->result > 0)
470 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
471 break;
472
473 case EIO_STAT:
474 case EIO_LSTAT:
475 case EIO_FSTAT:
476 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
477 PL_laststatval = req->result;
478 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
479 PUSHs (sv_2mortal (newSViv (req->result)));
480 break;
481
482 case EIO_READ:
403 { 483 {
404 reqs = reqs->next; 484 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
405 if (!reqs) reqe = 0; 485 *SvEND (req->sv2) = 0;
486 SvPOK_only (req->sv2);
487 SvSETMAGIC (req->sv2);
488 PUSHs (sv_2mortal (newSViv (req->result)));
406 } 489 }
407
408 if (req)
409 break; 490 break;
410 491
411 pthread_cond_wait (&reqwait, &reqlock);
412 }
413
414 pthread_mutex_unlock (&reqlock);
415
416 errno = 0; /* strictly unnecessary */
417
418 type = req->type;
419
420 switch (type)
421 {
422 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
423 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
424
425 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
426
427 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
428 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
429 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
430
431 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
432 case REQ_CLOSE: req->result = close (req->fd); break;
433 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
434 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
435 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
436
437 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
438 case REQ_FSYNC: req->result = fsync (req->fd); break;
439
440 case REQ_QUIT: 492 case EIO_DUP2:
441 break; 493 if (req->result > 0)
494 req->result = 0;
495 /* FALLTHROUGH */
442 496
443 default: 497 default:
444 req->result = ENOSYS; 498 PUSHs (sv_2mortal (newSViv (req->result)));
445 break; 499 break;
446 } 500 }
447 501
448 req->errorno = errno; 502 errno = req->errorno;
449 503
450 pthread_mutex_lock (&reslock); 504 PUTBACK;
505 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
506 SPAGAIN;
451 507
452 req->next = 0; 508 FREETMPS;
509 LEAVE;
453 510
454 if (rese) 511 PUTBACK;
455 {
456 rese->next = req;
457 rese = req;
458 }
459 else
460 {
461 rese = ress = req;
462
463 /* write a dummy byte to the pipe so fh becomes ready */
464 write (respipe [1], &respipe, 1);
465 }
466
467 pthread_mutex_unlock (&reslock);
468 } 512 }
469 while (type != REQ_QUIT); 513
514 return !!SvTRUE (ERRSV);
515}
516
517static void req_destroy (aio_req req)
518{
519 if (req->self)
520 {
521 sv_unmagic (req->self, PERL_MAGIC_ext);
522 SvREFCNT_dec (req->self);
523 }
524
525 SvREFCNT_dec (req->sv1);
526 SvREFCNT_dec (req->sv2);
527 SvREFCNT_dec (req->callback);
528
529 Safefree (req);
530}
531
532static void req_cancel_subs (aio_req grp)
533{
534 aio_req sub;
535
536 if (grp->type != EIO_GROUP)
537 return;
538
539 SvREFCNT_dec (grp->sv2);
540 grp->sv2 = 0;
541
542 eio_grp_cancel (grp);
543}
544
545static void
546create_respipe (void)
547{
548 if (s_epipe_renew (&respipe))
549 croak ("IO::AIO: unable to initialize result pipe");
550}
551
552static void poll_wait (void)
553{
554 while (eio_nreqs ())
555 {
556 int size;
557
558 X_LOCK (reslock);
559 size = res_queue.size;
560 X_UNLOCK (reslock);
561
562 if (size)
563 return;
564
565 etp_maybe_start_thread ();
566
567 s_epipe_wait (&respipe);
568 }
569}
570
571static int poll_cb (void)
572{
573 for (;;)
574 {
575 int res = eio_poll ();
576
577 if (res > 0)
578 croak (0);
579
580 if (!max_outstanding || max_outstanding > eio_nreqs ())
581 return res;
582
583 poll_wait ();
584 }
585}
586
587static void atfork_child (void)
588{
589 create_respipe ();
590}
591
592/*****************************************************************************/
593
594#define MMAP_MAGIC PERL_MAGIC_ext
595
596static int
597mmap_free (pTHX_ SV *sv, MAGIC *mg)
598{
599 int old_errno = errno;
600 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
601 errno = old_errno;
602
603 mg->mg_obj = 0; /* just in case */
604
605 SvREADONLY_off (sv);
606 SvCUR_set (sv, 0);
607 SvLEN_set (sv, 0);
608 SvPVX (sv) = 0;
609 SvOK_off (sv);
470 610
471 return 0; 611 return 0;
472} 612}
473 613
614static MGVTBL mmap_vtbl = {
615 0, 0, 0, 0, mmap_free
616};
617
618/*****************************************************************************/
619
620static SV *
621get_cb (SV *cb_sv)
622{
623 SvGETMAGIC (cb_sv);
624 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
625}
626
474#define dREQ \ 627#define dREQ \
628 SV *cb_cv; \
475 aio_req req; \ 629 aio_req req; \
630 int req_pri = next_pri; \
631 next_pri = EIO_PRI_DEFAULT; \
476 \ 632 \
477 if (SvOK (callback) && !SvROK (callback)) \ 633 cb_cv = get_cb (callback); \
478 croak ("clalback must be undef or of reference type"); \
479 \ 634 \
480 Newz (0, req, 1, aio_cb); \ 635 Newz (0, req, 1, eio_req); \
481 if (!req) \ 636 if (!req) \
482 croak ("out of memory during aio_req allocation"); \ 637 croak ("out of memory during eio_req allocation"); \
483 \ 638 \
484 req->callback = SvREFCNT_inc (callback); 639 req->callback = SvREFCNT_inc (cb_cv); \
485 640 req->pri = req_pri
641
642#define REQ_SEND \
643 PUTBACK; \
644 req_submit (req); \
645 SPAGAIN; \
646 \
647 if (GIMME_V != G_VOID) \
648 XPUSHs (req_sv (req, aio_req_stash));
649
486MODULE = IO::AIO PACKAGE = IO::AIO 650MODULE = IO::AIO PACKAGE = IO::AIO
487 651
488PROTOTYPES: ENABLE 652PROTOTYPES: ENABLE
489 653
490BOOT: 654BOOT:
491{ 655{
492 if (pipe (respipe)) 656 static const struct {
493 croak ("unable to initialize result pipe"); 657 const char *name;
658 IV iv;
659 } *civ, const_iv[] = {
660# define const_niv(name, value) { # name, (IV) value },
661# define const_iv(name) { # name, (IV) name },
662# define const_eio(name) { # name, (IV) EIO_ ## name },
663 const_iv (EXDEV)
664 const_iv (ENOSYS)
665 const_iv (O_RDONLY)
666 const_iv (O_WRONLY)
667 const_iv (O_CREAT)
668 const_iv (O_TRUNC)
669#ifndef _WIN32
670 const_iv (S_IFIFO)
671#endif
672 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
673 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
674 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
675 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
676 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
677 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
494 678
495 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 679 const_iv (ST_RDONLY)
496 croak ("cannot set result pipe to nonblocking mode"); 680 const_iv (ST_NOSUID)
681 const_iv (ST_NODEV)
682 const_iv (ST_NOEXEC)
683 const_iv (ST_SYNCHRONOUS)
684 const_iv (ST_MANDLOCK)
685 const_iv (ST_WRITE)
686 const_iv (ST_APPEND)
687 const_iv (ST_IMMUTABLE)
688 const_iv (ST_NOATIME)
689 const_iv (ST_NODIRATIME)
690 const_iv (ST_RELATIME)
497 691
498 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 692 const_iv (PROT_EXEC)
499 croak ("cannot set result pipe to nonblocking mode"); 693 const_iv (PROT_NONE)
694 const_iv (PROT_READ)
695 const_iv (PROT_WRITE)
500 696
501 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 697 /*const_iv (MAP_FIXED)*/
502} 698 const_iv (MAP_PRIVATE)
699 const_iv (MAP_SHARED)
700 const_iv (MAP_ANONYMOUS)
503 701
702 /* linuxish */
703 const_iv (MAP_HUGETLB)
704 const_iv (MAP_LOCKED)
705 const_iv (MAP_NORESERVE)
706 const_iv (MAP_POPULATE)
707 const_iv (MAP_NONBLOCK)
708
709 const_iv (MCL_FUTURE)
710 const_iv (MCL_CURRENT)
711
712 const_eio (MS_ASYNC)
713 const_eio (MS_INVALIDATE)
714 const_eio (MS_SYNC)
715
716 const_eio (MT_MODIFY)
717
718 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
719 const_eio (SYNC_FILE_RANGE_WRITE)
720 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
721
722 const_eio (READDIR_DENTS)
723 const_eio (READDIR_DIRS_FIRST)
724 const_eio (READDIR_STAT_ORDER)
725 const_eio (READDIR_FOUND_UNKNOWN)
726
727 const_eio (DT_UNKNOWN)
728 const_eio (DT_FIFO)
729 const_eio (DT_CHR)
730 const_eio (DT_DIR)
731 const_eio (DT_BLK)
732 const_eio (DT_REG)
733 const_eio (DT_LNK)
734 const_eio (DT_SOCK)
735 const_eio (DT_WHT)
736 };
737
738 aio_stash = gv_stashpv ("IO::AIO" , 1);
739 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
740 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
741
742 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
743 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
744
745 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
746
747 create_respipe ();
748
749 if (eio_init (want_poll, done_poll) < 0)
750 croak ("IO::AIO: unable to initialise eio library");
751
752 /* atfork child called in fifo order, so before eio's handler */
753 X_THREAD_ATFORK (0, 0, atfork_child);
754}
755
504void 756void
505min_parallel(nthreads) 757max_poll_reqs (int nreqs)
506 int nthreads
507 PROTOTYPE: $ 758 PROTOTYPE: $
759 CODE:
760 eio_set_max_poll_reqs (nreqs);
508 761
509void 762void
510max_parallel(nthreads) 763max_poll_time (double nseconds)
511 int nthreads
512 PROTOTYPE: $ 764 PROTOTYPE: $
513
514int
515max_outstanding(nreqs)
516 int nreqs
517 PROTOTYPE: $
518 CODE: 765 CODE:
519 RETVAL = max_outstanding; 766 eio_set_max_poll_time (nseconds);
767
768void
769min_parallel (int nthreads)
770 PROTOTYPE: $
771 CODE:
772 eio_set_min_parallel (nthreads);
773
774void
775max_parallel (int nthreads)
776 PROTOTYPE: $
777 CODE:
778 eio_set_max_parallel (nthreads);
779
780void
781max_idle (int nthreads)
782 PROTOTYPE: $
783 CODE:
784 eio_set_max_idle (nthreads);
785
786void
787max_outstanding (int maxreqs)
788 PROTOTYPE: $
789 CODE:
520 max_outstanding = nreqs; 790 max_outstanding = maxreqs;
521 791
522void 792void
523aio_open(pathname,flags,mode,callback=&PL_sv_undef) 793aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
524 SV * pathname
525 int flags
526 int mode
527 SV * callback
528 PROTOTYPE: $$$;$ 794 PROTOTYPE: $$$;$
529 CODE: 795 PPCODE:
530{ 796{
531 dREQ; 797 dREQ;
532 798
533 req->type = REQ_OPEN; 799 req->type = EIO_OPEN;
534 req->data = newSVsv (pathname); 800 req->sv1 = newSVsv (pathname);
535 req->dataptr = SvPVbyte_nolen (req->data); 801 req->ptr1 = SvPVbyte_nolen (req->sv1);
536 req->fd = flags; 802 req->int1 = flags;
537 req->mode = mode; 803 req->int2 = mode;
538 804
539 send_req (req); 805 REQ_SEND;
540} 806}
541 807
542void 808void
543aio_close(fh,callback=&PL_sv_undef) 809aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
544 SV * fh
545 SV * callback
546 PROTOTYPE: $;$ 810 PROTOTYPE: $;$
547 ALIAS: 811 ALIAS:
548 aio_close = REQ_CLOSE
549 aio_fsync = REQ_FSYNC 812 aio_fsync = EIO_FSYNC
550 aio_fdatasync = REQ_FDATASYNC 813 aio_fdatasync = EIO_FDATASYNC
551 CODE: 814 PPCODE:
552{ 815{
816 int fd = s_fileno_croak (fh, 0);
553 dREQ; 817 dREQ;
554 818
555 req->type = ix; 819 req->type = ix;
556 req->fh = newSVsv (fh); 820 req->sv1 = newSVsv (fh);
557 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 821 req->int1 = fd;
558 822
559 send_req (req); 823 REQ_SEND (req);
560} 824}
561 825
562void 826void
827aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
828 PROTOTYPE: $$$$;$
829 PPCODE:
830{
831 int fd = s_fileno_croak (fh, 0);
832 dREQ;
833
834 req->type = EIO_SYNC_FILE_RANGE;
835 req->sv1 = newSVsv (fh);
836 req->int1 = fd;
837 req->offs = offset;
838 req->size = nbytes;
839 req->int2 = flags;
840
841 REQ_SEND (req);
842}
843
844void
845aio_close (SV *fh, SV *callback=&PL_sv_undef)
846 PROTOTYPE: $;$
847 PPCODE:
848{
849 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
850 int fd = s_fileno_croak (fh, 0);
851 dREQ;
852
853 if (close_pipe < 0)
854 {
855 int pipefd [2];
856
857 if (pipe (pipefd) < 0
858 || close (pipefd [1]) < 0
859 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
860 abort (); /*D*/
861
862 close_pipe = pipefd [0];
863 }
864
865 req->type = EIO_DUP2;
866 req->int1 = close_pipe;
867 req->sv2 = newSVsv (fh);
868 req->int2 = fd;
869
870 REQ_SEND (req);
871}
872
873void
563aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 874aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
564 SV * fh
565 UV offset
566 IV length
567 SV * data
568 IV dataoffset
569 SV * callback
570 ALIAS: 875 ALIAS:
571 aio_read = REQ_READ 876 aio_read = EIO_READ
572 aio_write = REQ_WRITE 877 aio_write = EIO_WRITE
573 PROTOTYPE: $$$$$;$ 878 PROTOTYPE: $$$$$;$
574 CODE: 879 PPCODE:
575{ 880{
576 aio_req req;
577 STRLEN svlen; 881 STRLEN svlen;
882 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
578 char *svptr = SvPVbyte (data, svlen); 883 char *svptr = SvPVbyte (data, svlen);
579 884 UV len = SvUV (length);
580 SvUPGRADE (data, SVt_PV);
581 SvPOK_on (data);
582 885
583 if (dataoffset < 0) 886 if (dataoffset < 0)
584 dataoffset += svlen; 887 dataoffset += svlen;
585 888
586 if (dataoffset < 0 || dataoffset > svlen) 889 if (dataoffset < 0 || dataoffset > svlen)
587 croak ("data offset outside of string"); 890 croak ("dataoffset outside of data scalar");
588 891
589 if (ix == REQ_WRITE) 892 if (ix == EIO_WRITE)
590 { 893 {
591 /* write: check length and adjust. */ 894 /* write: check length and adjust. */
592 if (length < 0 || length + dataoffset > svlen) 895 if (!SvOK (length) || len + dataoffset > svlen)
593 length = svlen - dataoffset; 896 len = svlen - dataoffset;
594 } 897 }
595 else 898 else
596 { 899 {
597 /* read: grow scalar as necessary */ 900 /* read: check type and grow scalar as necessary */
901 SvUPGRADE (data, SVt_PV);
598 svptr = SvGROW (data, length + dataoffset); 902 svptr = SvGROW (data, len + dataoffset + 1);
599 } 903 }
600
601 if (length < 0)
602 croak ("length must not be negative");
603 904
604 { 905 {
605 dREQ; 906 dREQ;
606 907
607 req->type = ix; 908 req->type = ix;
608 req->fh = newSVsv (fh); 909 req->sv1 = newSVsv (fh);
609 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 910 req->int1 = fd;
610 : IoOFP (sv_2io (fh))); 911 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
611 req->offset = offset; 912 req->size = len;
612 req->length = length;
613 req->data = SvREFCNT_inc (data); 913 req->sv2 = SvREFCNT_inc (data);
614 req->dataptr = (char *)svptr + dataoffset; 914 req->ptr2 = (char *)svptr + dataoffset;
615 req->callback = SvREFCNT_inc (callback); 915 req->stroffset = dataoffset;
616 916
617 send_req (req); 917 if (!SvREADONLY (data))
918 {
919 SvREADONLY_on (data);
920 req->flags |= FLAG_SV2_RO_OFF;
921 }
922
923 REQ_SEND;
618 } 924 }
619} 925}
620 926
621void 927void
928aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
929 PROTOTYPE: $$;$
930 PPCODE:
931{
932 SV *data;
933 dREQ;
934
935 req->type = EIO_READLINK;
936 req->sv1 = newSVsv (path);
937 req->ptr1 = SvPVbyte_nolen (req->sv1);
938
939 REQ_SEND;
940}
941
942void
943aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
944 PROTOTYPE: $$$$;$
945 PPCODE:
946{
947 int ifd = s_fileno_croak (in_fh , 0);
948 int ofd = s_fileno_croak (out_fh, 1);
949 dREQ;
950
951 req->type = EIO_SENDFILE;
952 req->sv1 = newSVsv (out_fh);
953 req->int1 = ofd;
954 req->sv2 = newSVsv (in_fh);
955 req->int2 = ifd;
956 req->offs = in_offset;
957 req->size = length;
958
959 REQ_SEND;
960}
961
962void
622aio_readahead(fh,offset,length,callback=&PL_sv_undef) 963aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
623 SV * fh
624 UV offset
625 IV length
626 SV * callback
627 PROTOTYPE: $$$;$ 964 PROTOTYPE: $$$;$
628 CODE: 965 PPCODE:
629{ 966{
967 int fd = s_fileno_croak (fh, 0);
630 dREQ; 968 dREQ;
631 969
632 req->type = REQ_READAHEAD; 970 req->type = EIO_READAHEAD;
633 req->fh = newSVsv (fh); 971 req->sv1 = newSVsv (fh);
634 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 972 req->int1 = fd;
635 req->offset = offset; 973 req->offs = offset;
636 req->length = length; 974 req->size = length;
637 975
638 send_req (req); 976 REQ_SEND;
639} 977}
640 978
641void 979void
642aio_stat(fh_or_path,callback=&PL_sv_undef) 980aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
643 SV * fh_or_path
644 SV * callback
645 ALIAS: 981 ALIAS:
646 aio_stat = REQ_STAT 982 aio_stat = EIO_STAT
647 aio_lstat = REQ_LSTAT 983 aio_lstat = EIO_LSTAT
984 aio_statvfs = EIO_STATVFS
648 CODE: 985 PPCODE:
649{ 986{
650 dREQ; 987 dREQ;
651 988
652 New (0, req->statdata, 1, Stat_t); 989 req->sv1 = newSVsv (fh_or_path);
653 if (!req->statdata)
654 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
655 990
656 if (SvPOK (fh_or_path)) 991 if (SvPOK (req->sv1))
657 { 992 {
658 req->type = ix; 993 req->type = ix;
659 req->data = newSVsv (fh_or_path);
660 req->dataptr = SvPVbyte_nolen (req->data); 994 req->ptr1 = SvPVbyte_nolen (req->sv1);
661 } 995 }
662 else 996 else
663 { 997 {
664 req->type = REQ_FSTAT; 998 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
665 req->fh = newSVsv (fh_or_path);
666 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 999 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
667 } 1000 }
668 1001
669 send_req (req); 1002 REQ_SEND;
670} 1003}
671 1004
672void 1005void
1006aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1007 PPCODE:
1008{
1009 dREQ;
1010
1011 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1012 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1013 req->sv1 = newSVsv (fh_or_path);
1014
1015 if (SvPOK (req->sv1))
1016 {
1017 req->type = EIO_UTIME;
1018 req->ptr1 = SvPVbyte_nolen (req->sv1);
1019 }
1020 else
1021 {
1022 req->type = EIO_FUTIME;
1023 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1024 }
1025
1026 REQ_SEND;
1027}
1028
1029void
1030aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1031 PPCODE:
1032{
1033 dREQ;
1034
1035 req->sv1 = newSVsv (fh_or_path);
1036 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1037
1038 if (SvPOK (req->sv1))
1039 {
1040 req->type = EIO_TRUNCATE;
1041 req->ptr1 = SvPVbyte_nolen (req->sv1);
1042 }
1043 else
1044 {
1045 req->type = EIO_FTRUNCATE;
1046 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1047 }
1048
1049 REQ_SEND;
1050}
1051
1052void
1053aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1054 ALIAS:
1055 aio_chmod = EIO_CHMOD
1056 aio_mkdir = EIO_MKDIR
1057 PPCODE:
1058{
1059 dREQ;
1060
1061 req->int2 = mode;
1062 req->sv1 = newSVsv (fh_or_path);
1063
1064 if (SvPOK (req->sv1))
1065 {
1066 req->type = ix;
1067 req->ptr1 = SvPVbyte_nolen (req->sv1);
1068 }
1069 else
1070 {
1071 req->type = EIO_FCHMOD;
1072 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1073 }
1074
1075 REQ_SEND;
1076}
1077
1078void
1079aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1080 PPCODE:
1081{
1082 dREQ;
1083
1084 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1085 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1086 req->sv1 = newSVsv (fh_or_path);
1087
1088 if (SvPOK (req->sv1))
1089 {
1090 req->type = EIO_CHOWN;
1091 req->ptr1 = SvPVbyte_nolen (req->sv1);
1092 }
1093 else
1094 {
1095 req->type = EIO_FCHOWN;
1096 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097 }
1098
1099 REQ_SEND;
1100}
1101
1102void
1103aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1104 PPCODE:
1105{
1106 dREQ;
1107
1108 req->type = EIO_READDIR;
1109 req->sv1 = newSVsv (pathname);
1110 req->ptr1 = SvPVbyte_nolen (req->sv1);
1111 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1112
1113 if (flags & EIO_READDIR_DENTS)
1114 req->int1 |= EIO_READDIR_CUSTOM2;
1115
1116 REQ_SEND;
1117}
1118
1119void
673aio_unlink(pathname,callback=&PL_sv_undef) 1120aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
674 SV * pathname
675 SV * callback
676 ALIAS: 1121 ALIAS:
677 aio_unlink = REQ_UNLINK 1122 aio_unlink = EIO_UNLINK
678 aio_rmdir = REQ_RMDIR 1123 aio_rmdir = EIO_RMDIR
1124 aio_readdir = EIO_READDIR
679 CODE: 1125 PPCODE:
680{ 1126{
681 dREQ; 1127 dREQ;
682 1128
683 req->type = ix; 1129 req->type = ix;
684 req->data = newSVsv (pathname); 1130 req->sv1 = newSVsv (pathname);
685 req->dataptr = SvPVbyte_nolen (req->data); 1131 req->ptr1 = SvPVbyte_nolen (req->sv1);
686
687 send_req (req);
688}
689 1132
1133 REQ_SEND;
1134}
1135
690void 1136void
691aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1137aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
692 SV * oldpath 1138 ALIAS:
693 SV * newpath 1139 aio_link = EIO_LINK
694 SV * callback 1140 aio_symlink = EIO_SYMLINK
1141 aio_rename = EIO_RENAME
695 CODE: 1142 PPCODE:
696{ 1143{
697 dREQ; 1144 dREQ;
698 1145
699 req->type = REQ_SYMLINK; 1146 req->type = ix;
700 req->fh = newSVsv (oldpath); 1147 req->sv1 = newSVsv (oldpath);
701 req->data2ptr = SvPVbyte_nolen (req->fh); 1148 req->ptr1 = SvPVbyte_nolen (req->sv1);
702 req->data = newSVsv (newpath); 1149 req->sv2 = newSVsv (newpath);
703 req->dataptr = SvPVbyte_nolen (req->data); 1150 req->ptr2 = SvPVbyte_nolen (req->sv2);
704 1151
705 send_req (req); 1152 REQ_SEND;
706} 1153}
707 1154
708void 1155void
1156aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1157 PPCODE:
1158{
1159 dREQ;
1160
1161 req->type = EIO_MKNOD;
1162 req->sv1 = newSVsv (pathname);
1163 req->ptr1 = SvPVbyte_nolen (req->sv1);
1164 req->int2 = (mode_t)mode;
1165 req->offs = dev;
1166
1167 REQ_SEND;
1168}
1169
1170void
1171aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1172 ALIAS:
1173 aio_mtouch = EIO_MTOUCH
1174 aio_msync = EIO_MSYNC
1175 PROTOTYPE: $$$$;$
1176 PPCODE:
1177{
1178 STRLEN svlen;
1179 UV len = SvUV (length);
1180 char *svptr = SvPVbyte (data, svlen);
1181
1182 if (offset < 0)
1183 offset += svlen;
1184
1185 if (offset < 0 || offset > svlen)
1186 croak ("offset outside of scalar");
1187
1188 if (!SvOK (length) || len + offset > svlen)
1189 len = svlen - offset;
1190
1191 {
1192 dREQ;
1193
1194 req->type = ix;
1195 req->size = len;
1196 req->sv2 = SvREFCNT_inc (data);
1197 req->ptr2 = (char *)svptr + offset;
1198 req->int1 = flags;
1199
1200 REQ_SEND;
1201 }
1202}
1203
1204void
1205aio_busy (double delay, SV *callback=&PL_sv_undef)
1206 PPCODE:
1207{
1208 dREQ;
1209
1210 req->type = EIO_BUSY;
1211 req->nv1 = delay < 0. ? 0. : delay;
1212
1213 REQ_SEND;
1214}
1215
1216void
1217aio_group (SV *callback=&PL_sv_undef)
1218 PROTOTYPE: ;$
1219 PPCODE:
1220{
1221 dREQ;
1222
1223 req->type = EIO_GROUP;
1224
1225 req_submit (req);
1226 XPUSHs (req_sv (req, aio_grp_stash));
1227}
1228
1229void
1230aio_nop (SV *callback=&PL_sv_undef)
1231 ALIAS:
1232 aio_nop = EIO_NOP
1233 aio_sync = EIO_SYNC
1234 PPCODE:
1235{
1236 dREQ;
1237
1238 req->type = ix;
1239
1240 REQ_SEND;
1241}
1242
1243int
1244aioreq_pri (int pri = 0)
1245 PROTOTYPE: ;$
1246 CODE:
1247 RETVAL = next_pri;
1248 if (items > 0)
1249 {
1250 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1251 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1252 next_pri = pri;
1253 }
1254 OUTPUT:
1255 RETVAL
1256
1257void
1258aioreq_nice (int nice = 0)
1259 CODE:
1260 nice = next_pri - nice;
1261 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1262 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1263 next_pri = nice;
1264
1265void
709flush() 1266flush ()
710 PROTOTYPE: 1267 PROTOTYPE:
711 CODE: 1268 CODE:
712 while (nreqs) 1269 while (eio_nreqs ())
713 { 1270 {
714 poll_wait (); 1271 poll_wait ();
715 poll_cb (); 1272 poll_cb ();
716 } 1273 }
717 1274
718void 1275int
719poll() 1276poll()
720 PROTOTYPE: 1277 PROTOTYPE:
721 CODE: 1278 CODE:
722 if (nreqs)
723 {
724 poll_wait (); 1279 poll_wait ();
725 poll_cb (); 1280 RETVAL = poll_cb ();
726 } 1281 OUTPUT:
1282 RETVAL
727 1283
728int 1284int
729poll_fileno() 1285poll_fileno()
730 PROTOTYPE: 1286 PROTOTYPE:
731 CODE: 1287 CODE:
732 RETVAL = respipe [0]; 1288 RETVAL = s_epipe_fd (&respipe);
733 OUTPUT: 1289 OUTPUT:
734 RETVAL 1290 RETVAL
735 1291
736int 1292int
737poll_cb(...) 1293poll_cb(...)
… …
743 1299
744void 1300void
745poll_wait() 1301poll_wait()
746 PROTOTYPE: 1302 PROTOTYPE:
747 CODE: 1303 CODE:
748 if (nreqs)
749 poll_wait (); 1304 poll_wait ();
750 1305
751int 1306int
752nreqs() 1307nreqs()
753 PROTOTYPE: 1308 PROTOTYPE:
754 CODE: 1309 CODE:
755 RETVAL = nreqs; 1310 RETVAL = eio_nreqs ();
756 OUTPUT: 1311 OUTPUT:
757 RETVAL 1312 RETVAL
758 1313
1314int
1315nready()
1316 PROTOTYPE:
1317 CODE:
1318 RETVAL = eio_nready ();
1319 OUTPUT:
1320 RETVAL
1321
1322int
1323npending()
1324 PROTOTYPE:
1325 CODE:
1326 RETVAL = eio_npending ();
1327 OUTPUT:
1328 RETVAL
1329
1330int
1331nthreads()
1332 PROTOTYPE:
1333 CODE:
1334 RETVAL = eio_nthreads ();
1335 OUTPUT:
1336 RETVAL
1337
1338int
1339fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1340 PROTOTYPE: $$$$
1341 CODE:
1342#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1343 RETVAL = posix_fadvise (fh, offset, length, advice);
1344#else
1345 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1346#endif
1347 OUTPUT:
1348 RETVAL
1349
1350ssize_t
1351sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1352 PROTOTYPE: $$$$
1353 CODE:
1354 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1355 OUTPUT:
1356 RETVAL
1357
1358void
1359mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1360 PROTOTYPE: $$$$$;$
1361 PPCODE:
1362 sv_unmagic (scalar, MMAP_MAGIC);
1363{
1364 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1365 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1366 if (addr == (void *)-1)
1367 XSRETURN_NO;
1368
1369 /* we store the length in mg_obj, as namlen is I32 :/ */
1370 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1371 ->mg_obj = (SV *)length;
1372
1373 SvUPGRADE (scalar, SVt_PV); /* nop... */
1374 if (!(prot & PROT_WRITE))
1375 SvREADONLY_on (scalar);
1376
1377 SvPVX (scalar) = (char *)addr;
1378 SvCUR_set (scalar, length);
1379 SvLEN_set (scalar, 0);
1380 SvPOK_only (scalar);
1381
1382 XSRETURN_YES;
1383}
1384
1385void
1386munmap (SV *scalar)
1387 PROTOTYPE: $
1388 CODE:
1389 sv_unmagic (scalar, MMAP_MAGIC);
1390
1391int
1392mlockall (int flags)
1393 PROTOTYPE: $
1394 CODE:
1395#if _POSIX_MEMLOCK
1396#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1397 extern int mallopt (int, int);
1398 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1399#endif
1400 mlockall (flags);
1401#else
1402 RETVAL = -1;
1403 errno = ENOSYS;
1404#endif
1405 OUTPUT:
1406 RETVAL
1407
1408int
1409munlockall ()
1410 PROTOTYPE:
1411 CODE:
1412#if _POSIX_MEMLOCK
1413 munlockall ();
1414#else
1415 RETVAL = -1;
1416 errno = ENOSYS;
1417#endif
1418 OUTPUT:
1419 RETVAL
1420
1421void _on_next_submit (SV *cb)
1422 CODE:
1423 SvREFCNT_dec (on_next_submit);
1424 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1425
1426PROTOTYPES: DISABLE
1427
1428MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1429
1430void
1431cancel (aio_req_ornot req)
1432 CODE:
1433 eio_cancel (req);
1434
1435void
1436cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1437 PPCODE:
1438{
1439 if (GIMME_V != G_VOID)
1440 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1441
1442 if (items > 1)
1443 {
1444 SV *cb_cv =get_cb (callback);
1445
1446 SvREFCNT_dec (req->callback);
1447 req->callback = SvREFCNT_inc (cb_cv);
1448 }
1449}
1450
1451MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1452
1453void
1454add (aio_req grp, ...)
1455 PPCODE:
1456{
1457 int i;
1458
1459 if (grp->int1 == 2)
1460 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1461
1462 for (i = 1; i < items; ++i )
1463 {
1464 aio_req req;
1465
1466 if (GIMME_V != G_VOID)
1467 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1468
1469 req = SvAIO_REQ (ST (i));
1470
1471 if (req)
1472 eio_grp_add (grp, req);
1473 }
1474}
1475
1476void
1477cancel_subs (aio_req_ornot req)
1478 CODE:
1479 req_cancel_subs (req);
1480
1481void
1482result (aio_req grp, ...)
1483 CODE:
1484{
1485 int i;
1486 AV *av;
1487
1488 grp->errorno = errno;
1489
1490 av = newAV ();
1491 av_extend (av, items - 1);
1492
1493 for (i = 1; i < items; ++i )
1494 av_push (av, newSVsv (ST (i)));
1495
1496 SvREFCNT_dec (grp->sv1);
1497 grp->sv1 = (SV *)av;
1498}
1499
1500void
1501errno (aio_req grp, int errorno = errno)
1502 CODE:
1503 grp->errorno = errorno;
1504
1505void
1506limit (aio_req grp, int limit)
1507 CODE:
1508 eio_grp_limit (grp, limit);
1509
1510void
1511feed (aio_req grp, SV *callback=&PL_sv_undef)
1512 CODE:
1513{
1514 SvREFCNT_dec (grp->sv2);
1515 grp->sv2 = newSVsv (callback);
1516 grp->feed = aio_grp_feed;
1517
1518 if (grp->int2 <= 0)
1519 grp->int2 = 2;
1520
1521 eio_grp_limit (grp, grp->int2);
1522}
1523

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