… | |
… | |
40 | #ifndef _WIN32 |
40 | #ifndef _WIN32 |
41 | # include "config.h" |
41 | # include "config.h" |
42 | #endif |
42 | #endif |
43 | |
43 | |
44 | #include "eio.h" |
44 | #include "eio.h" |
|
|
45 | #include "ecb.h" |
45 | |
46 | |
46 | #ifdef EIO_STACKSIZE |
47 | #ifdef EIO_STACKSIZE |
47 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
48 | #endif |
49 | #endif |
49 | #include "xthread.h" |
50 | #include "xthread.h" |
… | |
… | |
165 | if (!eio_buf) \ |
166 | if (!eio_buf) \ |
166 | return -1; |
167 | return -1; |
167 | |
168 | |
168 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
169 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
169 | |
170 | |
170 | /*****************************************************************************/ |
|
|
171 | |
|
|
172 | #if __GNUC__ >= 3 |
|
|
173 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
174 | #else |
|
|
175 | # define expect(expr,value) (expr) |
|
|
176 | #endif |
|
|
177 | |
|
|
178 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
179 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
180 | |
|
|
181 | /*****************************************************************************/ |
|
|
182 | |
|
|
183 | #define ETP_PRI_MIN EIO_PRI_MIN |
171 | #define ETP_PRI_MIN EIO_PRI_MIN |
184 | #define ETP_PRI_MAX EIO_PRI_MAX |
172 | #define ETP_PRI_MAX EIO_PRI_MAX |
185 | |
173 | |
186 | struct etp_worker; |
174 | struct etp_worker; |
187 | |
175 | |
… | |
… | |
212 | /*****************************************************************************/ |
200 | /*****************************************************************************/ |
213 | |
201 | |
214 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
202 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
215 | |
203 | |
216 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
204 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
|
|
205 | ecb_inline int |
217 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
206 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
218 | { |
207 | { |
219 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
208 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
220 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
209 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
221 | } |
210 | } |
222 | |
211 | |
… | |
… | |
266 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
255 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
267 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
256 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
268 | |
257 | |
269 | /* worker threads management */ |
258 | /* worker threads management */ |
270 | |
259 | |
|
|
260 | static void ecb_cold |
271 | static void etp_worker_clear (etp_worker *wrk) |
261 | etp_worker_clear (etp_worker *wrk) |
272 | { |
262 | { |
273 | ETP_WORKER_CLEAR (wrk); |
263 | ETP_WORKER_CLEAR (wrk); |
274 | } |
264 | } |
275 | |
265 | |
|
|
266 | static void ecb_cold |
276 | static void etp_worker_free (etp_worker *wrk) |
267 | etp_worker_free (etp_worker *wrk) |
277 | { |
268 | { |
278 | wrk->next->prev = wrk->prev; |
269 | wrk->next->prev = wrk->prev; |
279 | wrk->prev->next = wrk->next; |
270 | wrk->prev->next = wrk->next; |
280 | |
271 | |
281 | free (wrk); |
272 | free (wrk); |
282 | } |
273 | } |
283 | |
274 | |
284 | static unsigned int etp_nreqs (void) |
275 | static unsigned int |
|
|
276 | etp_nreqs (void) |
285 | { |
277 | { |
286 | int retval; |
278 | int retval; |
287 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
279 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
288 | retval = nreqs; |
280 | retval = nreqs; |
289 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
281 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
290 | return retval; |
282 | return retval; |
291 | } |
283 | } |
292 | |
284 | |
293 | static unsigned int etp_nready (void) |
285 | static unsigned int |
|
|
286 | etp_nready (void) |
294 | { |
287 | { |
295 | unsigned int retval; |
288 | unsigned int retval; |
296 | |
289 | |
297 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
290 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
298 | retval = nready; |
291 | retval = nready; |
299 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
292 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
300 | |
293 | |
301 | return retval; |
294 | return retval; |
302 | } |
295 | } |
303 | |
296 | |
304 | static unsigned int etp_npending (void) |
297 | static unsigned int |
|
|
298 | etp_npending (void) |
305 | { |
299 | { |
306 | unsigned int retval; |
300 | unsigned int retval; |
307 | |
301 | |
308 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
302 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
309 | retval = npending; |
303 | retval = npending; |
310 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
304 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
311 | |
305 | |
312 | return retval; |
306 | return retval; |
313 | } |
307 | } |
314 | |
308 | |
315 | static unsigned int etp_nthreads (void) |
309 | static unsigned int |
|
|
310 | etp_nthreads (void) |
316 | { |
311 | { |
317 | unsigned int retval; |
312 | unsigned int retval; |
318 | |
313 | |
319 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
314 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
320 | retval = started; |
315 | retval = started; |
… | |
… | |
334 | } etp_reqq; |
329 | } etp_reqq; |
335 | |
330 | |
336 | static etp_reqq req_queue; |
331 | static etp_reqq req_queue; |
337 | static etp_reqq res_queue; |
332 | static etp_reqq res_queue; |
338 | |
333 | |
|
|
334 | static int ecb_noinline |
339 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
335 | reqq_push (etp_reqq *q, ETP_REQ *req) |
340 | { |
336 | { |
341 | int pri = req->pri; |
337 | int pri = req->pri; |
342 | req->next = 0; |
338 | req->next = 0; |
343 | |
339 | |
344 | if (q->qe[pri]) |
340 | if (q->qe[pri]) |
… | |
… | |
350 | q->qe[pri] = q->qs[pri] = req; |
346 | q->qe[pri] = q->qs[pri] = req; |
351 | |
347 | |
352 | return q->size++; |
348 | return q->size++; |
353 | } |
349 | } |
354 | |
350 | |
|
|
351 | static ETP_REQ * ecb_noinline |
355 | static ETP_REQ *reqq_shift (etp_reqq *q) |
352 | reqq_shift (etp_reqq *q) |
356 | { |
353 | { |
357 | int pri; |
354 | int pri; |
358 | |
355 | |
359 | if (!q->size) |
356 | if (!q->size) |
360 | return 0; |
357 | return 0; |
… | |
… | |
375 | } |
372 | } |
376 | |
373 | |
377 | abort (); |
374 | abort (); |
378 | } |
375 | } |
379 | |
376 | |
|
|
377 | static void ecb_cold |
380 | static void etp_thread_init (void) |
378 | etp_thread_init (void) |
381 | { |
379 | { |
382 | X_MUTEX_CREATE (wrklock); |
380 | X_MUTEX_CREATE (wrklock); |
383 | X_MUTEX_CREATE (reslock); |
381 | X_MUTEX_CREATE (reslock); |
384 | X_MUTEX_CREATE (reqlock); |
382 | X_MUTEX_CREATE (reqlock); |
385 | X_COND_CREATE (reqwait); |
383 | X_COND_CREATE (reqwait); |
386 | } |
384 | } |
387 | |
385 | |
|
|
386 | static void ecb_cold |
388 | static void etp_atfork_prepare (void) |
387 | etp_atfork_prepare (void) |
389 | { |
388 | { |
390 | X_LOCK (wrklock); |
389 | X_LOCK (wrklock); |
391 | X_LOCK (reqlock); |
390 | X_LOCK (reqlock); |
392 | X_LOCK (reslock); |
391 | X_LOCK (reslock); |
393 | #if !HAVE_PREADWRITE |
392 | #if !HAVE_PREADWRITE |
394 | X_LOCK (preadwritelock); |
393 | X_LOCK (preadwritelock); |
395 | #endif |
394 | #endif |
396 | } |
395 | } |
397 | |
396 | |
|
|
397 | static void ecb_cold |
398 | static void etp_atfork_parent (void) |
398 | etp_atfork_parent (void) |
399 | { |
399 | { |
400 | #if !HAVE_PREADWRITE |
400 | #if !HAVE_PREADWRITE |
401 | X_UNLOCK (preadwritelock); |
401 | X_UNLOCK (preadwritelock); |
402 | #endif |
402 | #endif |
403 | X_UNLOCK (reslock); |
403 | X_UNLOCK (reslock); |
404 | X_UNLOCK (reqlock); |
404 | X_UNLOCK (reqlock); |
405 | X_UNLOCK (wrklock); |
405 | X_UNLOCK (wrklock); |
406 | } |
406 | } |
407 | |
407 | |
|
|
408 | static void ecb_cold |
408 | static void etp_atfork_child (void) |
409 | etp_atfork_child (void) |
409 | { |
410 | { |
410 | ETP_REQ *prv; |
411 | ETP_REQ *prv; |
411 | |
412 | |
412 | while ((prv = reqq_shift (&req_queue))) |
413 | while ((prv = reqq_shift (&req_queue))) |
413 | ETP_DESTROY (prv); |
414 | ETP_DESTROY (prv); |
… | |
… | |
433 | npending = 0; |
434 | npending = 0; |
434 | |
435 | |
435 | etp_thread_init (); |
436 | etp_thread_init (); |
436 | } |
437 | } |
437 | |
438 | |
438 | static void |
439 | static void ecb_cold |
439 | etp_once_init (void) |
440 | etp_once_init (void) |
440 | { |
441 | { |
441 | etp_thread_init (); |
442 | etp_thread_init (); |
442 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
443 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
443 | } |
444 | } |
444 | |
445 | |
445 | static int |
446 | static int ecb_cold |
446 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
447 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
447 | { |
448 | { |
448 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
449 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
449 | |
450 | |
450 | pthread_once (&doinit, etp_once_init); |
451 | pthread_once (&doinit, etp_once_init); |
… | |
… | |
455 | return 0; |
456 | return 0; |
456 | } |
457 | } |
457 | |
458 | |
458 | X_THREAD_PROC (etp_proc); |
459 | X_THREAD_PROC (etp_proc); |
459 | |
460 | |
|
|
461 | static void ecb_cold |
460 | static void etp_start_thread (void) |
462 | etp_start_thread (void) |
461 | { |
463 | { |
462 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
464 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
463 | |
465 | |
464 | /*TODO*/ |
466 | /*TODO*/ |
465 | assert (("unable to allocate worker thread data", wrk)); |
467 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
478 | free (wrk); |
480 | free (wrk); |
479 | |
481 | |
480 | X_UNLOCK (wrklock); |
482 | X_UNLOCK (wrklock); |
481 | } |
483 | } |
482 | |
484 | |
|
|
485 | static void |
483 | static void etp_maybe_start_thread (void) |
486 | etp_maybe_start_thread (void) |
484 | { |
487 | { |
485 | if (expect_true (etp_nthreads () >= wanted)) |
488 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
486 | return; |
489 | return; |
487 | |
490 | |
488 | /* todo: maybe use idle here, but might be less exact */ |
491 | /* todo: maybe use idle here, but might be less exact */ |
489 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
492 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
490 | return; |
493 | return; |
491 | |
494 | |
492 | etp_start_thread (); |
495 | etp_start_thread (); |
493 | } |
496 | } |
494 | |
497 | |
|
|
498 | static void ecb_cold |
495 | static void etp_end_thread (void) |
499 | etp_end_thread (void) |
496 | { |
500 | { |
497 | eio_req *req = calloc (1, sizeof (eio_req)); |
501 | eio_req *req = calloc (1, sizeof (eio_req)); |
498 | |
502 | |
499 | req->type = -1; |
503 | req->type = -1; |
500 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
504 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
507 | X_LOCK (wrklock); |
511 | X_LOCK (wrklock); |
508 | --started; |
512 | --started; |
509 | X_UNLOCK (wrklock); |
513 | X_UNLOCK (wrklock); |
510 | } |
514 | } |
511 | |
515 | |
512 | static int etp_poll (void) |
516 | static int |
|
|
517 | etp_poll (void) |
513 | { |
518 | { |
514 | unsigned int maxreqs; |
519 | unsigned int maxreqs; |
515 | unsigned int maxtime; |
520 | unsigned int maxtime; |
516 | struct timeval tv_start, tv_now; |
521 | struct timeval tv_start, tv_now; |
517 | |
522 | |
… | |
… | |
547 | |
552 | |
548 | X_LOCK (reqlock); |
553 | X_LOCK (reqlock); |
549 | --nreqs; |
554 | --nreqs; |
550 | X_UNLOCK (reqlock); |
555 | X_UNLOCK (reqlock); |
551 | |
556 | |
552 | if (expect_false (req->type == EIO_GROUP && req->size)) |
557 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
553 | { |
558 | { |
554 | req->int1 = 1; /* mark request as delayed */ |
559 | req->int1 = 1; /* mark request as delayed */ |
555 | continue; |
560 | continue; |
556 | } |
561 | } |
557 | else |
562 | else |
558 | { |
563 | { |
559 | int res = ETP_FINISH (req); |
564 | int res = ETP_FINISH (req); |
560 | if (expect_false (res)) |
565 | if (ecb_expect_false (res)) |
561 | return res; |
566 | return res; |
562 | } |
567 | } |
563 | |
568 | |
564 | if (expect_false (maxreqs && !--maxreqs)) |
569 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
565 | break; |
570 | break; |
566 | |
571 | |
567 | if (maxtime) |
572 | if (maxtime) |
568 | { |
573 | { |
569 | gettimeofday (&tv_now, 0); |
574 | gettimeofday (&tv_now, 0); |
… | |
… | |
575 | |
580 | |
576 | errno = EAGAIN; |
581 | errno = EAGAIN; |
577 | return -1; |
582 | return -1; |
578 | } |
583 | } |
579 | |
584 | |
|
|
585 | static void |
580 | static void etp_cancel (ETP_REQ *req) |
586 | etp_cancel (ETP_REQ *req) |
581 | { |
587 | { |
582 | X_LOCK (wrklock); |
588 | X_LOCK (wrklock); |
583 | req->flags |= EIO_FLAG_CANCELLED; |
589 | req->flags |= EIO_FLAG_CANCELLED; |
584 | X_UNLOCK (wrklock); |
590 | X_UNLOCK (wrklock); |
585 | |
591 | |
586 | eio_grp_cancel (req); |
592 | eio_grp_cancel (req); |
587 | } |
593 | } |
588 | |
594 | |
|
|
595 | static void |
589 | static void etp_submit (ETP_REQ *req) |
596 | etp_submit (ETP_REQ *req) |
590 | { |
597 | { |
591 | req->pri -= ETP_PRI_MIN; |
598 | req->pri -= ETP_PRI_MIN; |
592 | |
599 | |
593 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
600 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
594 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
601 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
595 | |
602 | |
596 | if (expect_false (req->type == EIO_GROUP)) |
603 | if (ecb_expect_false (req->type == EIO_GROUP)) |
597 | { |
604 | { |
598 | /* I hope this is worth it :/ */ |
605 | /* I hope this is worth it :/ */ |
599 | X_LOCK (reqlock); |
606 | X_LOCK (reqlock); |
600 | ++nreqs; |
607 | ++nreqs; |
601 | X_UNLOCK (reqlock); |
608 | X_UNLOCK (reqlock); |
… | |
… | |
620 | |
627 | |
621 | etp_maybe_start_thread (); |
628 | etp_maybe_start_thread (); |
622 | } |
629 | } |
623 | } |
630 | } |
624 | |
631 | |
|
|
632 | static void ecb_cold |
625 | static void etp_set_max_poll_time (double nseconds) |
633 | etp_set_max_poll_time (double nseconds) |
626 | { |
634 | { |
627 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
635 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
628 | max_poll_time = nseconds * EIO_TICKS; |
636 | max_poll_time = nseconds * EIO_TICKS; |
629 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
637 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
630 | } |
638 | } |
631 | |
639 | |
|
|
640 | static void ecb_cold |
632 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
641 | etp_set_max_poll_reqs (unsigned int maxreqs) |
633 | { |
642 | { |
634 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
643 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
635 | max_poll_reqs = maxreqs; |
644 | max_poll_reqs = maxreqs; |
636 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
645 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
637 | } |
646 | } |
638 | |
647 | |
|
|
648 | static void ecb_cold |
639 | static void etp_set_max_idle (unsigned int nthreads) |
649 | etp_set_max_idle (unsigned int nthreads) |
640 | { |
650 | { |
641 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
651 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
642 | max_idle = nthreads; |
652 | max_idle = nthreads; |
643 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
653 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
644 | } |
654 | } |
645 | |
655 | |
|
|
656 | static void ecb_cold |
646 | static void etp_set_idle_timeout (unsigned int seconds) |
657 | etp_set_idle_timeout (unsigned int seconds) |
647 | { |
658 | { |
648 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
659 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
649 | idle_timeout = seconds; |
660 | idle_timeout = seconds; |
650 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
661 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
651 | } |
662 | } |
652 | |
663 | |
|
|
664 | static void ecb_cold |
653 | static void etp_set_min_parallel (unsigned int nthreads) |
665 | etp_set_min_parallel (unsigned int nthreads) |
654 | { |
666 | { |
655 | if (wanted < nthreads) |
667 | if (wanted < nthreads) |
656 | wanted = nthreads; |
668 | wanted = nthreads; |
657 | } |
669 | } |
658 | |
670 | |
|
|
671 | static void ecb_cold |
659 | static void etp_set_max_parallel (unsigned int nthreads) |
672 | etp_set_max_parallel (unsigned int nthreads) |
660 | { |
673 | { |
661 | if (wanted > nthreads) |
674 | if (wanted > nthreads) |
662 | wanted = nthreads; |
675 | wanted = nthreads; |
663 | |
676 | |
664 | while (started > wanted) |
677 | while (started > wanted) |
665 | etp_end_thread (); |
678 | etp_end_thread (); |
666 | } |
679 | } |
667 | |
680 | |
668 | /*****************************************************************************/ |
681 | /*****************************************************************************/ |
669 | |
682 | |
|
|
683 | static void |
670 | static void grp_try_feed (eio_req *grp) |
684 | grp_try_feed (eio_req *grp) |
671 | { |
685 | { |
672 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
686 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
673 | { |
687 | { |
674 | grp->flags &= ~EIO_FLAG_GROUPADD; |
688 | grp->flags &= ~EIO_FLAG_GROUPADD; |
675 | |
689 | |
… | |
… | |
682 | break; |
696 | break; |
683 | } |
697 | } |
684 | } |
698 | } |
685 | } |
699 | } |
686 | |
700 | |
|
|
701 | static int |
687 | static int grp_dec (eio_req *grp) |
702 | grp_dec (eio_req *grp) |
688 | { |
703 | { |
689 | --grp->size; |
704 | --grp->size; |
690 | |
705 | |
691 | /* call feeder, if applicable */ |
706 | /* call feeder, if applicable */ |
692 | grp_try_feed (grp); |
707 | grp_try_feed (grp); |
… | |
… | |
696 | return eio_finish (grp); |
711 | return eio_finish (grp); |
697 | else |
712 | else |
698 | return 0; |
713 | return 0; |
699 | } |
714 | } |
700 | |
715 | |
|
|
716 | void |
701 | void eio_destroy (eio_req *req) |
717 | eio_destroy (eio_req *req) |
702 | { |
718 | { |
703 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
719 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
704 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
720 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
705 | |
721 | |
706 | EIO_DESTROY (req); |
722 | EIO_DESTROY (req); |
707 | } |
723 | } |
708 | |
724 | |
|
|
725 | static int |
709 | static int eio_finish (eio_req *req) |
726 | eio_finish (eio_req *req) |
710 | { |
727 | { |
711 | int res = EIO_FINISH (req); |
728 | int res = EIO_FINISH (req); |
712 | |
729 | |
713 | if (req->grp) |
730 | if (req->grp) |
714 | { |
731 | { |
… | |
… | |
731 | eio_destroy (req); |
748 | eio_destroy (req); |
732 | |
749 | |
733 | return res; |
750 | return res; |
734 | } |
751 | } |
735 | |
752 | |
|
|
753 | void |
736 | void eio_grp_cancel (eio_req *grp) |
754 | eio_grp_cancel (eio_req *grp) |
737 | { |
755 | { |
738 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
756 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
739 | eio_cancel (grp); |
757 | eio_cancel (grp); |
740 | } |
758 | } |
741 | |
759 | |
|
|
760 | void |
742 | void eio_cancel (eio_req *req) |
761 | eio_cancel (eio_req *req) |
743 | { |
762 | { |
744 | etp_cancel (req); |
763 | etp_cancel (req); |
745 | } |
764 | } |
746 | |
765 | |
|
|
766 | void |
747 | void eio_submit (eio_req *req) |
767 | eio_submit (eio_req *req) |
748 | { |
768 | { |
749 | etp_submit (req); |
769 | etp_submit (req); |
750 | } |
770 | } |
751 | |
771 | |
752 | unsigned int eio_nreqs (void) |
772 | unsigned int |
|
|
773 | eio_nreqs (void) |
753 | { |
774 | { |
754 | return etp_nreqs (); |
775 | return etp_nreqs (); |
755 | } |
776 | } |
756 | |
777 | |
757 | unsigned int eio_nready (void) |
778 | unsigned int |
|
|
779 | eio_nready (void) |
758 | { |
780 | { |
759 | return etp_nready (); |
781 | return etp_nready (); |
760 | } |
782 | } |
761 | |
783 | |
762 | unsigned int eio_npending (void) |
784 | unsigned int |
|
|
785 | eio_npending (void) |
763 | { |
786 | { |
764 | return etp_npending (); |
787 | return etp_npending (); |
765 | } |
788 | } |
766 | |
789 | |
767 | unsigned int eio_nthreads (void) |
790 | unsigned int ecb_cold |
|
|
791 | eio_nthreads (void) |
768 | { |
792 | { |
769 | return etp_nthreads (); |
793 | return etp_nthreads (); |
770 | } |
794 | } |
771 | |
795 | |
|
|
796 | void ecb_cold |
772 | void eio_set_max_poll_time (double nseconds) |
797 | eio_set_max_poll_time (double nseconds) |
773 | { |
798 | { |
774 | etp_set_max_poll_time (nseconds); |
799 | etp_set_max_poll_time (nseconds); |
775 | } |
800 | } |
776 | |
801 | |
|
|
802 | void ecb_cold |
777 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
803 | eio_set_max_poll_reqs (unsigned int maxreqs) |
778 | { |
804 | { |
779 | etp_set_max_poll_reqs (maxreqs); |
805 | etp_set_max_poll_reqs (maxreqs); |
780 | } |
806 | } |
781 | |
807 | |
|
|
808 | void ecb_cold |
782 | void eio_set_max_idle (unsigned int nthreads) |
809 | eio_set_max_idle (unsigned int nthreads) |
783 | { |
810 | { |
784 | etp_set_max_idle (nthreads); |
811 | etp_set_max_idle (nthreads); |
785 | } |
812 | } |
786 | |
813 | |
|
|
814 | void ecb_cold |
787 | void eio_set_idle_timeout (unsigned int seconds) |
815 | eio_set_idle_timeout (unsigned int seconds) |
788 | { |
816 | { |
789 | etp_set_idle_timeout (seconds); |
817 | etp_set_idle_timeout (seconds); |
790 | } |
818 | } |
791 | |
819 | |
|
|
820 | void ecb_cold |
792 | void eio_set_min_parallel (unsigned int nthreads) |
821 | eio_set_min_parallel (unsigned int nthreads) |
793 | { |
822 | { |
794 | etp_set_min_parallel (nthreads); |
823 | etp_set_min_parallel (nthreads); |
795 | } |
824 | } |
796 | |
825 | |
|
|
826 | void ecb_cold |
797 | void eio_set_max_parallel (unsigned int nthreads) |
827 | eio_set_max_parallel (unsigned int nthreads) |
798 | { |
828 | { |
799 | etp_set_max_parallel (nthreads); |
829 | etp_set_max_parallel (nthreads); |
800 | } |
830 | } |
801 | |
831 | |
802 | int eio_poll (void) |
832 | int eio_poll (void) |
… | |
… | |
804 | return etp_poll (); |
834 | return etp_poll (); |
805 | } |
835 | } |
806 | |
836 | |
807 | /*****************************************************************************/ |
837 | /*****************************************************************************/ |
808 | /* work around various missing functions */ |
838 | /* work around various missing functions */ |
|
|
839 | |
|
|
840 | #if _POSIX_VERSION < 200809L |
|
|
841 | # define realpath(path,resolved_path) (errno = ENOSYS, 0) |
|
|
842 | #endif |
809 | |
843 | |
810 | #if !HAVE_PREADWRITE |
844 | #if !HAVE_PREADWRITE |
811 | # undef pread |
845 | # undef pread |
812 | # undef pwrite |
846 | # undef pwrite |
813 | # define pread eio__pread |
847 | # define pread eio__pread |
… | |
… | |
872 | #ifndef HAVE_FUTIMES |
906 | #ifndef HAVE_FUTIMES |
873 | |
907 | |
874 | # undef futimes |
908 | # undef futimes |
875 | # define futimes(fd,times) eio__futimes (fd, times) |
909 | # define futimes(fd,times) eio__futimes (fd, times) |
876 | |
910 | |
|
|
911 | static int |
877 | static int eio__futimes (int fd, const struct timeval tv[2]) |
912 | eio__futimes (int fd, const struct timeval tv[2]) |
878 | { |
913 | { |
879 | errno = ENOSYS; |
914 | errno = ENOSYS; |
880 | return -1; |
915 | return -1; |
881 | } |
916 | } |
882 | |
917 | |
… | |
… | |
886 | # undef fdatasync |
921 | # undef fdatasync |
887 | # define fdatasync(fd) fsync (fd) |
922 | # define fdatasync(fd) fsync (fd) |
888 | #endif |
923 | #endif |
889 | |
924 | |
890 | /* sync_file_range always needs emulation */ |
925 | /* sync_file_range always needs emulation */ |
891 | int |
926 | static int |
892 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
927 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
893 | { |
928 | { |
894 | #if HAVE_SYNC_FILE_RANGE |
929 | #if HAVE_SYNC_FILE_RANGE |
895 | int res; |
930 | int res; |
896 | |
931 | |
… | |
… | |
975 | |
1010 | |
976 | /* according to source inspection, this is correct, and useful behaviour */ |
1011 | /* according to source inspection, this is correct, and useful behaviour */ |
977 | if (sbytes) |
1012 | if (sbytes) |
978 | res = sbytes; |
1013 | res = sbytes; |
979 | |
1014 | |
980 | # elif defined (__APPLE__) |
1015 | # elif defined (__APPLE__) && 0 /* broken, as everything on os x */ |
981 | off_t sbytes = count; |
1016 | off_t sbytes = count; |
982 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
1017 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
983 | |
1018 | |
984 | /* according to the manpage, sbytes is always valid */ |
1019 | /* according to the manpage, sbytes is always valid */ |
985 | if (sbytes) |
1020 | if (sbytes) |
… | |
… | |
1275 | |
1310 | |
1276 | X_LOCK (wrklock); |
1311 | X_LOCK (wrklock); |
1277 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1312 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1278 | self->dirp = dirp = opendir (req->ptr1); |
1313 | self->dirp = dirp = opendir (req->ptr1); |
1279 | |
1314 | |
|
|
1315 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1316 | free (req->ptr1); |
|
|
1317 | |
1280 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1318 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1281 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1319 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1282 | req->ptr2 = names = malloc (namesalloc); |
1320 | req->ptr2 = names = malloc (namesalloc); |
1283 | X_UNLOCK (wrklock); |
1321 | X_UNLOCK (wrklock); |
1284 | |
1322 | |
… | |
… | |
1335 | /* skip . and .. entries */ |
1373 | /* skip . and .. entries */ |
1336 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1374 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1337 | { |
1375 | { |
1338 | int len = D_NAMLEN (entp) + 1; |
1376 | int len = D_NAMLEN (entp) + 1; |
1339 | |
1377 | |
1340 | while (expect_false (namesoffs + len > namesalloc)) |
1378 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1341 | { |
1379 | { |
1342 | namesalloc *= 2; |
1380 | namesalloc *= 2; |
1343 | X_LOCK (wrklock); |
1381 | X_LOCK (wrklock); |
1344 | req->ptr2 = names = realloc (names, namesalloc); |
1382 | req->ptr2 = names = realloc (names, namesalloc); |
1345 | X_UNLOCK (wrklock); |
1383 | X_UNLOCK (wrklock); |
… | |
… | |
1352 | |
1390 | |
1353 | if (dents) |
1391 | if (dents) |
1354 | { |
1392 | { |
1355 | struct eio_dirent *ent; |
1393 | struct eio_dirent *ent; |
1356 | |
1394 | |
1357 | if (expect_false (dentoffs == dentalloc)) |
1395 | if (ecb_expect_false (dentoffs == dentalloc)) |
1358 | { |
1396 | { |
1359 | dentalloc *= 2; |
1397 | dentalloc *= 2; |
1360 | X_LOCK (wrklock); |
1398 | X_LOCK (wrklock); |
1361 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1399 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1362 | X_UNLOCK (wrklock); |
1400 | X_UNLOCK (wrklock); |
… | |
… | |
1522 | |
1560 | |
1523 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1561 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1524 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
1562 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
1525 | #else |
1563 | #else |
1526 | |
1564 | |
1527 | int |
1565 | static int |
1528 | eio__msync (void *mem, size_t len, int flags) |
1566 | eio__msync (void *mem, size_t len, int flags) |
1529 | { |
1567 | { |
1530 | eio_page_align (&mem, &len); |
1568 | eio_page_align (&mem, &len); |
1531 | |
1569 | |
1532 | if (EIO_MS_ASYNC != MS_SYNC |
1570 | if (EIO_MS_ASYNC != MS_SYNC |
… | |
… | |
1542 | return msync (mem, len, flags); |
1580 | return msync (mem, len, flags); |
1543 | } |
1581 | } |
1544 | |
1582 | |
1545 | #endif |
1583 | #endif |
1546 | |
1584 | |
1547 | int |
1585 | static int |
1548 | eio__mtouch (eio_req *req) |
1586 | eio__mtouch (eio_req *req) |
1549 | { |
1587 | { |
1550 | void *mem = req->ptr2; |
1588 | void *mem = req->ptr2; |
1551 | size_t len = req->size; |
1589 | size_t len = req->size; |
1552 | int flags = req->int1; |
1590 | int flags = req->int1; |
… | |
… | |
1658 | return 0; |
1696 | return 0; |
1659 | } |
1697 | } |
1660 | |
1698 | |
1661 | /*****************************************************************************/ |
1699 | /*****************************************************************************/ |
1662 | |
1700 | |
|
|
1701 | int ecb_cold |
1663 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1702 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1664 | { |
1703 | { |
1665 | return etp_init (want_poll, done_poll); |
1704 | return etp_init (want_poll, done_poll); |
1666 | } |
1705 | } |
1667 | |
1706 | |
|
|
1707 | ecb_inline void |
1668 | static void eio_api_destroy (eio_req *req) |
1708 | eio_api_destroy (eio_req *req) |
1669 | { |
1709 | { |
1670 | free (req); |
1710 | free (req); |
1671 | } |
1711 | } |
1672 | |
1712 | |
1673 | #define REQ(rtype) \ |
1713 | #define REQ(rtype) \ |
… | |
… | |
1692 | { \ |
1732 | { \ |
1693 | eio_api_destroy (req); \ |
1733 | eio_api_destroy (req); \ |
1694 | return 0; \ |
1734 | return 0; \ |
1695 | } |
1735 | } |
1696 | |
1736 | |
|
|
1737 | static void |
1697 | static void eio_execute (etp_worker *self, eio_req *req) |
1738 | eio_execute (etp_worker *self, eio_req *req) |
1698 | { |
1739 | { |
1699 | switch (req->type) |
1740 | switch (req->type) |
1700 | { |
1741 | { |
1701 | case EIO_READ: ALLOC (req->size); |
1742 | case EIO_READ: ALLOC (req->size); |
1702 | req->result = req->offs >= 0 |
1743 | req->result = req->offs >= 0 |
… | |
… | |
1737 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1778 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1738 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1779 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1739 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1780 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1740 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1781 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1741 | |
1782 | |
|
|
1783 | case EIO_REALPATH: req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1784 | req->ptr2 = realpath (req->ptr1, 0); |
|
|
1785 | req->result = req->ptr2 ? strlen (req->ptr2) : -1; |
|
|
1786 | break; |
|
|
1787 | |
1742 | case EIO_READLINK: ALLOC (PATH_MAX); |
1788 | case EIO_READLINK: ALLOC (PATH_MAX); |
1743 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1789 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1744 | |
1790 | |
1745 | case EIO_SYNC: req->result = 0; sync (); break; |
1791 | case EIO_SYNC: req->result = 0; sync (); break; |
1746 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1792 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
… | |
… | |
1963 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2009 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1964 | { |
2010 | { |
1965 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2011 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
1966 | } |
2012 | } |
1967 | |
2013 | |
|
|
2014 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2015 | { |
|
|
2016 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2017 | } |
|
|
2018 | |
1968 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2019 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1969 | { |
2020 | { |
1970 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2021 | return eio__1path (EIO_STAT, path, pri, cb, data); |
1971 | } |
2022 | } |
1972 | |
2023 | |
… | |
… | |
2029 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2080 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2030 | { |
2081 | { |
2031 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2082 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2032 | } |
2083 | } |
2033 | |
2084 | |
2034 | eio_req *eio_custom (void (*)(eio_req *) execute, int pri, eio_cb cb, void *data); |
2085 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2035 | { |
2086 | { |
2036 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2087 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2037 | } |
2088 | } |
2038 | |
2089 | |
2039 | #endif |
2090 | #endif |
… | |
… | |
2050 | #undef SEND |
2101 | #undef SEND |
2051 | |
2102 | |
2052 | /*****************************************************************************/ |
2103 | /*****************************************************************************/ |
2053 | /* grp functions */ |
2104 | /* grp functions */ |
2054 | |
2105 | |
|
|
2106 | void |
2055 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2107 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2056 | { |
2108 | { |
2057 | grp->int2 = limit; |
2109 | grp->int2 = limit; |
2058 | grp->feed = feed; |
2110 | grp->feed = feed; |
2059 | |
2111 | |
2060 | grp_try_feed (grp); |
2112 | grp_try_feed (grp); |
2061 | } |
2113 | } |
2062 | |
2114 | |
|
|
2115 | void |
2063 | void eio_grp_limit (eio_req *grp, int limit) |
2116 | eio_grp_limit (eio_req *grp, int limit) |
2064 | { |
2117 | { |
2065 | grp->int2 = limit; |
2118 | grp->int2 = limit; |
2066 | |
2119 | |
2067 | grp_try_feed (grp); |
2120 | grp_try_feed (grp); |
2068 | } |
2121 | } |
2069 | |
2122 | |
|
|
2123 | void |
2070 | void eio_grp_add (eio_req *grp, eio_req *req) |
2124 | eio_grp_add (eio_req *grp, eio_req *req) |
2071 | { |
2125 | { |
2072 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2126 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2073 | |
2127 | |
2074 | grp->flags |= EIO_FLAG_GROUPADD; |
2128 | grp->flags |= EIO_FLAG_GROUPADD; |
2075 | |
2129 | |
… | |
… | |
2086 | } |
2140 | } |
2087 | |
2141 | |
2088 | /*****************************************************************************/ |
2142 | /*****************************************************************************/ |
2089 | /* misc garbage */ |
2143 | /* misc garbage */ |
2090 | |
2144 | |
|
|
2145 | ssize_t |
2091 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2146 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2092 | { |
2147 | { |
2093 | etp_worker wrk; |
2148 | etp_worker wrk; |
2094 | ssize_t ret; |
2149 | ssize_t ret; |
2095 | |
2150 | |
2096 | wrk.dbuf = 0; |
2151 | wrk.dbuf = 0; |