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1 | #define _REENTRANT 1 |
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2 | #include <errno.h> |
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3 | |
1 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
2 | #include "perl.h" |
5 | #include "perl.h" |
3 | #include "XSUB.h" |
6 | #include "XSUB.h" |
4 | |
7 | |
5 | #include "autoconf/config.h" |
8 | #include "autoconf/config.h" |
… | |
… | |
26 | |
29 | |
27 | enum { |
30 | enum { |
28 | REQ_QUIT, |
31 | REQ_QUIT, |
29 | REQ_OPEN, REQ_CLOSE, |
32 | REQ_OPEN, REQ_CLOSE, |
30 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
31 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
32 | REQ_FSYNC, REQ_FDATASYNC, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
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36 | REQ_UNLINK, REQ_RMDIR, |
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37 | REQ_SYMLINK, |
33 | }; |
38 | }; |
34 | |
39 | |
35 | typedef struct aio_cb { |
40 | typedef struct aio_cb { |
36 | struct aio_cb *volatile next; |
41 | struct aio_cb *volatile next; |
37 | |
42 | |
… | |
… | |
42 | size_t length; |
47 | size_t length; |
43 | ssize_t result; |
48 | ssize_t result; |
44 | mode_t mode; /* open */ |
49 | mode_t mode; /* open */ |
45 | int errorno; |
50 | int errorno; |
46 | SV *data, *callback, *fh; |
51 | SV *data, *callback, *fh; |
47 | void *dataptr; |
52 | void *dataptr, *data2ptr; |
48 | STRLEN dataoffset; |
53 | STRLEN dataoffset; |
49 | |
54 | |
50 | Stat_t *statdata; |
55 | Stat_t *statdata; |
51 | } aio_cb; |
56 | } aio_cb; |
52 | |
57 | |
… | |
… | |
57 | static int max_outstanding = 1<<30; |
62 | static int max_outstanding = 1<<30; |
58 | static int respipe [2]; |
63 | static int respipe [2]; |
59 | |
64 | |
60 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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67 | static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER; |
62 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
68 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
63 | |
69 | |
64 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
70 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
65 | static volatile aio_req ress, rese; /* queue start, queue end */ |
71 | static volatile aio_req ress, rese; /* queue start, queue end */ |
66 | |
72 | |
… | |
… | |
80 | static int |
86 | static int |
81 | poll_cb () |
87 | poll_cb () |
82 | { |
88 | { |
83 | dSP; |
89 | dSP; |
84 | int count = 0; |
90 | int count = 0; |
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91 | int do_croak = 0; |
85 | aio_req req, prv; |
92 | aio_req req, prv; |
86 | |
93 | |
87 | pthread_mutex_lock (&reslock); |
94 | pthread_mutex_lock (&reslock); |
88 | |
95 | |
89 | { |
96 | { |
90 | /* read any signals sent by the worker threads */ |
97 | /* read any signals sent by the worker threads */ |
91 | char buf [32]; |
98 | char buf [32]; |
92 | while (read (respipe [0], buf, 32) > 0) |
99 | while (read (respipe [0], buf, 32) == 32) |
93 | ; |
100 | ; |
94 | } |
101 | } |
95 | |
102 | |
96 | req = ress; |
103 | req = ress; |
97 | ress = rese = 0; |
104 | ress = rese = 0; |
… | |
… | |
152 | PUTBACK; |
159 | PUTBACK; |
153 | call_sv (req->callback, G_VOID | G_EVAL); |
160 | call_sv (req->callback, G_VOID | G_EVAL); |
154 | SPAGAIN; |
161 | SPAGAIN; |
155 | } |
162 | } |
156 | |
163 | |
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164 | do_croak = SvTRUE (ERRSV); |
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165 | |
157 | LEAVE; |
166 | LEAVE; |
158 | |
167 | |
159 | if (req->callback) |
168 | if (req->callback) |
160 | SvREFCNT_dec (req->callback); |
169 | SvREFCNT_dec (req->callback); |
161 | |
170 | |
… | |
… | |
165 | |
174 | |
166 | prv = req; |
175 | prv = req; |
167 | req = req->next; |
176 | req = req->next; |
168 | Safefree (prv); |
177 | Safefree (prv); |
169 | |
178 | |
170 | /* TODO: croak on errors? */ |
179 | if (do_croak) |
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180 | croak (0); |
171 | } |
181 | } |
172 | |
182 | |
173 | return count; |
183 | return count; |
174 | } |
184 | } |
175 | |
185 | |
… | |
… | |
230 | req->type = REQ_QUIT; |
240 | req->type = REQ_QUIT; |
231 | |
241 | |
232 | send_req (req); |
242 | send_req (req); |
233 | } |
243 | } |
234 | |
244 | |
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245 | |
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246 | static void min_parallel (int nthreads) |
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247 | { |
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248 | while (nthreads > started) |
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249 | start_thread (); |
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250 | } |
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251 | |
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252 | static void max_parallel (int nthreads) |
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253 | { |
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254 | int cur = started; |
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255 | while (cur > nthreads) |
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256 | { |
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257 | end_thread (); |
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258 | cur--; |
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259 | } |
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260 | |
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261 | while (started > nthreads) |
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262 | { |
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263 | poll_wait (); |
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264 | poll_cb (); |
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265 | } |
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266 | } |
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267 | |
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268 | static int fork_started; |
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269 | |
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270 | static void atfork_prepare (void) |
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271 | { |
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272 | int nstarted; |
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273 | |
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274 | for (;;) { |
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275 | while (nreqs) |
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276 | { |
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277 | poll_wait (); |
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278 | poll_cb (); |
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279 | } |
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280 | |
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281 | nstarted = started; |
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282 | max_parallel (0); |
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283 | |
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284 | pthread_mutex_lock (&reqlock); |
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285 | |
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286 | if (!nreqs && !started) |
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287 | break; |
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288 | |
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289 | pthread_mutex_unlock (&reqlock); |
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290 | |
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291 | min_parallel (fork_started); |
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292 | } |
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293 | |
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294 | pthread_mutex_lock (&frklock); |
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295 | fork_started = nstarted; |
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296 | pthread_mutex_lock (&reslock); |
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297 | |
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298 | assert (!started); |
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299 | assert (!nreqs); |
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300 | assert (!reqs && !reqe); |
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301 | assert (!ress && !rese); |
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302 | } |
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303 | |
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304 | static void atfork_parent (void) |
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305 | { |
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306 | pthread_mutex_unlock (&reslock); |
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307 | pthread_mutex_unlock (&frklock); |
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308 | pthread_mutex_unlock (&reqlock); |
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309 | |
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310 | min_parallel (fork_started); |
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311 | } |
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312 | |
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313 | #define atfork_child atfork_parent |
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314 | |
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315 | /*****************************************************************************/ |
235 | /* work around various missing functions */ |
316 | /* work around various missing functions */ |
236 | |
317 | |
237 | #if !HAVE_PREADWRITE |
318 | #if !HAVE_PREADWRITE |
238 | # define pread aio_pread |
319 | # define pread aio_pread |
239 | # define pwrite aio_pwrite |
320 | # define pwrite aio_pwrite |
… | |
… | |
301 | |
382 | |
302 | errno = 0; |
383 | errno = 0; |
303 | } |
384 | } |
304 | #endif |
385 | #endif |
305 | |
386 | |
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387 | /*****************************************************************************/ |
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388 | |
306 | static void * |
389 | static void * |
307 | aio_proc (void *thr_arg) |
390 | aio_proc (void *thr_arg) |
308 | { |
391 | { |
309 | aio_req req; |
392 | aio_req req; |
310 | int type; |
393 | int type; |
… | |
… | |
347 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
430 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
348 | |
431 | |
349 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
432 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
350 | case REQ_CLOSE: req->result = close (req->fd); break; |
433 | case REQ_CLOSE: req->result = close (req->fd); break; |
351 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
434 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
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435 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
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436 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
352 | |
437 | |
353 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
438 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
354 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
439 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
355 | |
440 | |
356 | case REQ_QUIT: |
441 | case REQ_QUIT: |
… | |
… | |
385 | while (type != REQ_QUIT); |
470 | while (type != REQ_QUIT); |
386 | |
471 | |
387 | return 0; |
472 | return 0; |
388 | } |
473 | } |
389 | |
474 | |
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475 | #define dREQ \ |
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476 | aio_req req; \ |
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477 | \ |
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478 | if (SvOK (callback) && !SvROK (callback)) \ |
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479 | croak ("clalback must be undef or of reference type"); \ |
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480 | \ |
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481 | Newz (0, req, 1, aio_cb); \ |
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482 | if (!req) \ |
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483 | croak ("out of memory during aio_req allocation"); \ |
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484 | \ |
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485 | req->callback = SvREFCNT_inc (callback); |
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486 | |
390 | MODULE = IO::AIO PACKAGE = IO::AIO |
487 | MODULE = IO::AIO PACKAGE = IO::AIO |
391 | |
488 | |
392 | PROTOTYPES: ENABLE |
489 | PROTOTYPES: ENABLE |
393 | |
490 | |
394 | BOOT: |
491 | BOOT: |
… | |
… | |
399 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
496 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
400 | croak ("cannot set result pipe to nonblocking mode"); |
497 | croak ("cannot set result pipe to nonblocking mode"); |
401 | |
498 | |
402 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
499 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
403 | croak ("cannot set result pipe to nonblocking mode"); |
500 | croak ("cannot set result pipe to nonblocking mode"); |
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501 | |
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502 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
404 | } |
503 | } |
405 | |
504 | |
406 | void |
505 | void |
407 | min_parallel(nthreads) |
506 | min_parallel(nthreads) |
408 | int nthreads |
507 | int nthreads |
409 | PROTOTYPE: $ |
508 | PROTOTYPE: $ |
410 | CODE: |
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411 | while (nthreads > started) |
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412 | start_thread (); |
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413 | |
509 | |
414 | void |
510 | void |
415 | max_parallel(nthreads) |
511 | max_parallel(nthreads) |
416 | int nthreads |
512 | int nthreads |
417 | PROTOTYPE: $ |
513 | PROTOTYPE: $ |
418 | CODE: |
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419 | { |
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420 | int cur = started; |
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421 | while (cur > nthreads) |
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422 | { |
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423 | end_thread (); |
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424 | cur--; |
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425 | } |
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426 | |
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427 | while (started > nthreads) |
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428 | { |
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429 | poll_wait (); |
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430 | poll_cb (); |
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431 | } |
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432 | } |
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433 | |
514 | |
434 | int |
515 | int |
435 | max_outstanding(nreqs) |
516 | max_outstanding(nreqs) |
436 | int nreqs |
517 | int nreqs |
437 | PROTOTYPE: $ |
518 | PROTOTYPE: $ |
… | |
… | |
446 | int mode |
527 | int mode |
447 | SV * callback |
528 | SV * callback |
448 | PROTOTYPE: $$$;$ |
529 | PROTOTYPE: $$$;$ |
449 | CODE: |
530 | CODE: |
450 | { |
531 | { |
451 | aio_req req; |
532 | dREQ; |
452 | |
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453 | Newz (0, req, 1, aio_cb); |
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454 | |
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455 | if (!req) |
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456 | croak ("out of memory during aio_req allocation"); |
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457 | |
533 | |
458 | req->type = REQ_OPEN; |
534 | req->type = REQ_OPEN; |
459 | req->data = newSVsv (pathname); |
535 | req->data = newSVsv (pathname); |
460 | req->dataptr = SvPV_nolen (req->data); |
536 | req->dataptr = SvPVbyte_nolen (req->data); |
461 | req->fd = flags; |
537 | req->fd = flags; |
462 | req->mode = mode; |
538 | req->mode = mode; |
463 | req->callback = SvREFCNT_inc (callback); |
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464 | |
539 | |
465 | send_req (req); |
540 | send_req (req); |
466 | } |
541 | } |
467 | |
542 | |
468 | void |
543 | void |
… | |
… | |
474 | aio_close = REQ_CLOSE |
549 | aio_close = REQ_CLOSE |
475 | aio_fsync = REQ_FSYNC |
550 | aio_fsync = REQ_FSYNC |
476 | aio_fdatasync = REQ_FDATASYNC |
551 | aio_fdatasync = REQ_FDATASYNC |
477 | CODE: |
552 | CODE: |
478 | { |
553 | { |
479 | aio_req req; |
554 | dREQ; |
480 | |
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481 | Newz (0, req, 1, aio_cb); |
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482 | |
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483 | if (!req) |
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484 | croak ("out of memory during aio_req allocation"); |
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485 | |
555 | |
486 | req->type = ix; |
556 | req->type = ix; |
487 | req->fh = newSVsv (fh); |
557 | req->fh = newSVsv (fh); |
488 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
558 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
489 | req->callback = SvREFCNT_inc (callback); |
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490 | |
559 | |
491 | send_req (req); |
560 | send_req (req); |
492 | } |
561 | } |
493 | |
562 | |
494 | void |
563 | void |
… | |
… | |
505 | PROTOTYPE: $$$$$;$ |
574 | PROTOTYPE: $$$$$;$ |
506 | CODE: |
575 | CODE: |
507 | { |
576 | { |
508 | aio_req req; |
577 | aio_req req; |
509 | STRLEN svlen; |
578 | STRLEN svlen; |
510 | char *svptr = SvPV (data, svlen); |
579 | char *svptr = SvPVbyte (data, svlen); |
511 | |
580 | |
512 | SvUPGRADE (data, SVt_PV); |
581 | SvUPGRADE (data, SVt_PV); |
513 | SvPOK_on (data); |
582 | SvPOK_on (data); |
514 | |
583 | |
515 | if (dataoffset < 0) |
584 | if (dataoffset < 0) |
… | |
… | |
531 | } |
600 | } |
532 | |
601 | |
533 | if (length < 0) |
602 | if (length < 0) |
534 | croak ("length must not be negative"); |
603 | croak ("length must not be negative"); |
535 | |
604 | |
536 | Newz (0, req, 1, aio_cb); |
605 | { |
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606 | dREQ; |
537 | |
607 | |
538 | if (!req) |
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539 | croak ("out of memory during aio_req allocation"); |
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540 | |
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541 | req->type = ix; |
608 | req->type = ix; |
542 | req->fh = newSVsv (fh); |
609 | req->fh = newSVsv (fh); |
543 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
610 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
544 | : IoOFP (sv_2io (fh))); |
611 | : IoOFP (sv_2io (fh))); |
545 | req->offset = offset; |
612 | req->offset = offset; |
546 | req->length = length; |
613 | req->length = length; |
547 | req->data = SvREFCNT_inc (data); |
614 | req->data = SvREFCNT_inc (data); |
548 | req->dataptr = (char *)svptr + dataoffset; |
615 | req->dataptr = (char *)svptr + dataoffset; |
549 | req->callback = SvREFCNT_inc (callback); |
616 | req->callback = SvREFCNT_inc (callback); |
550 | |
617 | |
551 | send_req (req); |
618 | send_req (req); |
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619 | } |
552 | } |
620 | } |
553 | |
621 | |
554 | void |
622 | void |
555 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
623 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
556 | SV * fh |
624 | SV * fh |
… | |
… | |
558 | IV length |
626 | IV length |
559 | SV * callback |
627 | SV * callback |
560 | PROTOTYPE: $$$;$ |
628 | PROTOTYPE: $$$;$ |
561 | CODE: |
629 | CODE: |
562 | { |
630 | { |
563 | aio_req req; |
631 | dREQ; |
564 | |
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565 | if (length < 0) |
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566 | croak ("length must not be negative"); |
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567 | |
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568 | Newz (0, req, 1, aio_cb); |
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569 | |
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570 | if (!req) |
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571 | croak ("out of memory during aio_req allocation"); |
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572 | |
632 | |
573 | req->type = REQ_READAHEAD; |
633 | req->type = REQ_READAHEAD; |
574 | req->fh = newSVsv (fh); |
634 | req->fh = newSVsv (fh); |
575 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
635 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
576 | req->offset = offset; |
636 | req->offset = offset; |
577 | req->length = length; |
637 | req->length = length; |
578 | req->callback = SvREFCNT_inc (callback); |
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579 | |
638 | |
580 | send_req (req); |
639 | send_req (req); |
581 | } |
640 | } |
582 | |
641 | |
583 | void |
642 | void |
… | |
… | |
587 | ALIAS: |
646 | ALIAS: |
588 | aio_stat = REQ_STAT |
647 | aio_stat = REQ_STAT |
589 | aio_lstat = REQ_LSTAT |
648 | aio_lstat = REQ_LSTAT |
590 | CODE: |
649 | CODE: |
591 | { |
650 | { |
592 | aio_req req; |
651 | dREQ; |
593 | |
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594 | Newz (0, req, 1, aio_cb); |
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595 | |
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596 | if (!req) |
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597 | croak ("out of memory during aio_req allocation"); |
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598 | |
652 | |
599 | New (0, req->statdata, 1, Stat_t); |
653 | New (0, req->statdata, 1, Stat_t); |
600 | |
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601 | if (!req->statdata) |
654 | if (!req->statdata) |
602 | croak ("out of memory during aio_req->statdata allocation"); |
655 | croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)"); |
603 | |
656 | |
604 | if (SvPOK (fh_or_path)) |
657 | if (SvPOK (fh_or_path)) |
605 | { |
658 | { |
606 | req->type = ix; |
659 | req->type = ix; |
607 | req->data = newSVsv (fh_or_path); |
660 | req->data = newSVsv (fh_or_path); |
608 | req->dataptr = SvPV_nolen (req->data); |
661 | req->dataptr = SvPVbyte_nolen (req->data); |
609 | } |
662 | } |
610 | else |
663 | else |
611 | { |
664 | { |
612 | req->type = REQ_FSTAT; |
665 | req->type = REQ_FSTAT; |
613 | req->fh = newSVsv (fh_or_path); |
666 | req->fh = newSVsv (fh_or_path); |
614 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
667 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
615 | } |
668 | } |
616 | |
669 | |
617 | req->callback = SvREFCNT_inc (callback); |
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618 | |
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619 | send_req (req); |
670 | send_req (req); |
620 | } |
671 | } |
621 | |
672 | |
622 | void |
673 | void |
623 | aio_unlink(pathname,callback=&PL_sv_undef) |
674 | aio_unlink(pathname,callback=&PL_sv_undef) |
624 | SV * pathname |
675 | SV * pathname |
625 | SV * callback |
676 | SV * callback |
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677 | ALIAS: |
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678 | aio_unlink = REQ_UNLINK |
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679 | aio_rmdir = REQ_RMDIR |
626 | CODE: |
680 | CODE: |
627 | { |
681 | { |
628 | aio_req req; |
682 | dREQ; |
629 | |
683 | |
630 | Newz (0, req, 1, aio_cb); |
684 | req->type = ix; |
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685 | req->data = newSVsv (pathname); |
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686 | req->dataptr = SvPVbyte_nolen (req->data); |
631 | |
687 | |
632 | if (!req) |
688 | send_req (req); |
633 | croak ("out of memory during aio_req allocation"); |
689 | } |
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690 | |
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691 | void |
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692 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
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693 | SV * oldpath |
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694 | SV * newpath |
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695 | SV * callback |
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696 | CODE: |
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697 | { |
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698 | dREQ; |
634 | |
699 | |
635 | req->type = REQ_UNLINK; |
700 | req->type = REQ_SYMLINK; |
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701 | req->fh = newSVsv (oldpath); |
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702 | req->data2ptr = SvPVbyte_nolen (req->fh); |
636 | req->data = newSVsv (pathname); |
703 | req->data = newSVsv (newpath); |
637 | req->dataptr = SvPV_nolen (req->data); |
704 | req->dataptr = SvPVbyte_nolen (req->data); |
638 | req->callback = SvREFCNT_inc (callback); |
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639 | |
705 | |
640 | send_req (req); |
706 | send_req (req); |
641 | } |
707 | } |
642 | |
708 | |
643 | void |
709 | void |