… | |
… | |
126 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
126 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
127 | |
127 | |
128 | static unsigned int started, idle, wanted; |
128 | static unsigned int started, idle, wanted; |
129 | |
129 | |
130 | /* worker threads management */ |
130 | /* worker threads management */ |
131 | static mutex_t wrklock = MUTEX_INIT; |
131 | static mutex_t wrklock = X_MUTEX_INIT; |
132 | |
132 | |
133 | typedef struct worker { |
133 | typedef struct worker { |
134 | /* locked by wrklock */ |
134 | /* locked by wrklock */ |
135 | struct worker *prev, *next; |
135 | struct worker *prev, *next; |
136 | |
136 | |
… | |
… | |
159 | static volatile unsigned int nreqs, nready, npending; |
159 | static volatile unsigned int nreqs, nready, npending; |
160 | static volatile unsigned int max_idle = 4; |
160 | static volatile unsigned int max_idle = 4; |
161 | static volatile unsigned int max_outstanding = 0xffffffff; |
161 | static volatile unsigned int max_outstanding = 0xffffffff; |
162 | static int respipe [2]; |
162 | static int respipe [2]; |
163 | |
163 | |
164 | static mutex_t reslock = MUTEX_INIT; |
164 | static mutex_t reslock = X_MUTEX_INIT; |
165 | static mutex_t reqlock = MUTEX_INIT; |
165 | static mutex_t reqlock = X_MUTEX_INIT; |
166 | static cond_t reqwait = COND_INIT; |
166 | static cond_t reqwait = X_COND_INIT; |
167 | |
167 | |
168 | #if WORDACCESS_UNSAFE |
168 | #if WORDACCESS_UNSAFE |
169 | |
169 | |
170 | static unsigned int get_nready () |
170 | static unsigned int get_nready () |
171 | { |
171 | { |
172 | unsigned int retval; |
172 | unsigned int retval; |
173 | |
173 | |
174 | LOCK (reqlock); |
174 | X_LOCK (reqlock); |
175 | retval = nready; |
175 | retval = nready; |
176 | UNLOCK (reqlock); |
176 | X_UNLOCK (reqlock); |
177 | |
177 | |
178 | return retval; |
178 | return retval; |
179 | } |
179 | } |
180 | |
180 | |
181 | static unsigned int get_npending () |
181 | static unsigned int get_npending () |
182 | { |
182 | { |
183 | unsigned int retval; |
183 | unsigned int retval; |
184 | |
184 | |
185 | LOCK (reslock); |
185 | X_LOCK (reslock); |
186 | retval = npending; |
186 | retval = npending; |
187 | UNLOCK (reslock); |
187 | X_UNLOCK (reslock); |
188 | |
188 | |
189 | return retval; |
189 | return retval; |
190 | } |
190 | } |
191 | |
191 | |
192 | static unsigned int get_nthreads () |
192 | static unsigned int get_nthreads () |
193 | { |
193 | { |
194 | unsigned int retval; |
194 | unsigned int retval; |
195 | |
195 | |
196 | LOCK (wrklock); |
196 | X_LOCK (wrklock); |
197 | retval = started; |
197 | retval = started; |
198 | UNLOCK (wrklock); |
198 | X_UNLOCK (wrklock); |
199 | |
199 | |
200 | return retval; |
200 | return retval; |
201 | } |
201 | } |
202 | |
202 | |
203 | #else |
203 | #else |
… | |
… | |
347 | worker *wrk = calloc (1, sizeof (worker)); |
347 | worker *wrk = calloc (1, sizeof (worker)); |
348 | |
348 | |
349 | if (!wrk) |
349 | if (!wrk) |
350 | croak ("unable to allocate worker thread data"); |
350 | croak ("unable to allocate worker thread data"); |
351 | |
351 | |
352 | LOCK (wrklock); |
352 | X_LOCK (wrklock); |
353 | if (thread_create (&wrk->tid, aio_proc, (void *)wrk)) |
353 | if (thread_create (&wrk->tid, aio_proc, (void *)wrk)) |
354 | { |
354 | { |
355 | wrk->prev = &wrk_first; |
355 | wrk->prev = &wrk_first; |
356 | wrk->next = wrk_first.next; |
356 | wrk->next = wrk_first.next; |
357 | wrk_first.next->prev = wrk; |
357 | wrk_first.next->prev = wrk; |
… | |
… | |
359 | ++started; |
359 | ++started; |
360 | } |
360 | } |
361 | else |
361 | else |
362 | free (wrk); |
362 | free (wrk); |
363 | |
363 | |
364 | UNLOCK (wrklock); |
364 | X_UNLOCK (wrklock); |
365 | } |
365 | } |
366 | |
366 | |
367 | static void maybe_start_thread () |
367 | static void maybe_start_thread () |
368 | { |
368 | { |
369 | if (get_nthreads () >= wanted) |
369 | if (get_nthreads () >= wanted) |
… | |
… | |
397 | req->callback = SvREFCNT_inc (POPs); |
397 | req->callback = SvREFCNT_inc (POPs); |
398 | } |
398 | } |
399 | |
399 | |
400 | ++nreqs; |
400 | ++nreqs; |
401 | |
401 | |
402 | LOCK (reqlock); |
402 | X_LOCK (reqlock); |
403 | ++nready; |
403 | ++nready; |
404 | reqq_push (&req_queue, req); |
404 | reqq_push (&req_queue, req); |
405 | COND_SIGNAL (reqwait); |
405 | X_COND_SIGNAL (reqwait); |
406 | UNLOCK (reqlock); |
406 | X_UNLOCK (reqlock); |
407 | |
407 | |
408 | maybe_start_thread (); |
408 | maybe_start_thread (); |
409 | |
409 | |
410 | if (wait_callback) |
410 | if (wait_callback) |
411 | { |
411 | { |
… | |
… | |
424 | Newz (0, req, 1, aio_cb); |
424 | Newz (0, req, 1, aio_cb); |
425 | |
425 | |
426 | req->type = REQ_QUIT; |
426 | req->type = REQ_QUIT; |
427 | req->pri = PRI_MAX + PRI_BIAS; |
427 | req->pri = PRI_MAX + PRI_BIAS; |
428 | |
428 | |
429 | LOCK (reqlock); |
429 | X_LOCK (reqlock); |
430 | reqq_push (&req_queue, req); |
430 | reqq_push (&req_queue, req); |
431 | COND_SIGNAL (reqwait); |
431 | X_COND_SIGNAL (reqwait); |
432 | UNLOCK (reqlock); |
432 | X_UNLOCK (reqlock); |
433 | |
433 | |
434 | LOCK (wrklock); |
434 | X_LOCK (wrklock); |
435 | --started; |
435 | --started; |
436 | UNLOCK (wrklock); |
436 | X_UNLOCK (wrklock); |
437 | } |
437 | } |
438 | |
438 | |
439 | static void set_max_idle (int nthreads) |
439 | static void set_max_idle (int nthreads) |
440 | { |
440 | { |
441 | if (WORDACCESS_UNSAFE) LOCK (reqlock); |
441 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
442 | max_idle = nthreads <= 0 ? 1 : nthreads; |
442 | max_idle = nthreads <= 0 ? 1 : nthreads; |
443 | if (WORDACCESS_UNSAFE) UNLOCK (reqlock); |
443 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
444 | } |
444 | } |
445 | |
445 | |
446 | static void min_parallel (int nthreads) |
446 | static void min_parallel (int nthreads) |
447 | { |
447 | { |
448 | if (wanted < nthreads) |
448 | if (wanted < nthreads) |
… | |
… | |
463 | fd_set rfd; |
463 | fd_set rfd; |
464 | |
464 | |
465 | while (nreqs) |
465 | while (nreqs) |
466 | { |
466 | { |
467 | int size; |
467 | int size; |
468 | if (WORDACCESS_UNSAFE) LOCK (reslock); |
468 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
469 | size = res_queue.size; |
469 | size = res_queue.size; |
470 | if (WORDACCESS_UNSAFE) UNLOCK (reslock); |
470 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
471 | |
471 | |
472 | if (size) |
472 | if (size) |
473 | return; |
473 | return; |
474 | |
474 | |
475 | maybe_start_thread (); |
475 | maybe_start_thread (); |
… | |
… | |
497 | { |
497 | { |
498 | for (;;) |
498 | for (;;) |
499 | { |
499 | { |
500 | maybe_start_thread (); |
500 | maybe_start_thread (); |
501 | |
501 | |
502 | LOCK (reslock); |
502 | X_LOCK (reslock); |
503 | req = reqq_shift (&res_queue); |
503 | req = reqq_shift (&res_queue); |
504 | |
504 | |
505 | if (req) |
505 | if (req) |
506 | { |
506 | { |
507 | --npending; |
507 | --npending; |
… | |
… | |
513 | while (read (respipe [0], buf, 4) == 4) |
513 | while (read (respipe [0], buf, 4) == 4) |
514 | ; |
514 | ; |
515 | } |
515 | } |
516 | } |
516 | } |
517 | |
517 | |
518 | UNLOCK (reslock); |
518 | X_UNLOCK (reslock); |
519 | |
519 | |
520 | if (!req) |
520 | if (!req) |
521 | break; |
521 | break; |
522 | |
522 | |
523 | --nreqs; |
523 | --nreqs; |
… | |
… | |
553 | } |
553 | } |
554 | |
554 | |
555 | return count; |
555 | return count; |
556 | } |
556 | } |
557 | |
557 | |
558 | static void create_pipe () |
|
|
559 | { |
|
|
560 | if (pipe (respipe)) |
|
|
561 | croak ("unable to initialize result pipe"); |
|
|
562 | |
|
|
563 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
564 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
565 | |
|
|
566 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
567 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
568 | } |
|
|
569 | |
|
|
570 | /*****************************************************************************/ |
558 | /*****************************************************************************/ |
571 | |
559 | |
572 | static void *aio_proc (void *thr_arg) |
560 | static void *aio_proc (void *thr_arg) |
573 | { |
561 | { |
574 | aio_req req; |
562 | aio_req req; |
… | |
… | |
581 | |
569 | |
582 | for (;;) |
570 | for (;;) |
583 | { |
571 | { |
584 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
572 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
585 | |
573 | |
586 | LOCK (reqlock); |
574 | X_LOCK (reqlock); |
587 | |
575 | |
588 | for (;;) |
576 | for (;;) |
589 | { |
577 | { |
590 | self->req = req = reqq_shift (&req_queue); |
578 | self->req = req = reqq_shift (&req_queue); |
591 | |
579 | |
592 | if (req) |
580 | if (req) |
593 | break; |
581 | break; |
594 | |
582 | |
595 | ++idle; |
583 | ++idle; |
596 | |
584 | |
597 | if (COND_TIMEDWAIT (reqwait, reqlock, ts) |
585 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) |
598 | == ETIMEDOUT) |
586 | == ETIMEDOUT) |
599 | { |
587 | { |
600 | if (idle > max_idle) |
588 | if (idle > max_idle) |
601 | { |
589 | { |
602 | --idle; |
590 | --idle; |
603 | UNLOCK (reqlock); |
591 | X_UNLOCK (reqlock); |
604 | LOCK (wrklock); |
592 | X_LOCK (wrklock); |
605 | --started; |
593 | --started; |
606 | UNLOCK (wrklock); |
594 | X_UNLOCK (wrklock); |
607 | goto quit; |
595 | goto quit; |
608 | } |
596 | } |
609 | |
597 | |
610 | /* we are allowed to idle, so do so without any timeout */ |
598 | /* we are allowed to idle, so do so without any timeout */ |
611 | COND_WAIT (reqwait, reqlock); |
599 | X_COND_WAIT (reqwait, reqlock); |
612 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
600 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
613 | } |
601 | } |
614 | |
602 | |
615 | --idle; |
603 | --idle; |
616 | } |
604 | } |
617 | |
605 | |
618 | --nready; |
606 | --nready; |
619 | |
607 | |
620 | UNLOCK (reqlock); |
608 | X_UNLOCK (reqlock); |
621 | |
609 | |
622 | switch (req->type) |
610 | switch (req->type) |
623 | { |
611 | { |
624 | case REQ_QUIT: |
612 | case REQ_QUIT: |
625 | goto quit; |
613 | goto quit; |
… | |
… | |
739 | default: |
727 | default: |
740 | req->result = ENOSYS; |
728 | req->result = ENOSYS; |
741 | break; |
729 | break; |
742 | } |
730 | } |
743 | |
731 | |
744 | LOCK (reslock); |
732 | X_LOCK (reslock); |
745 | |
733 | |
746 | ++npending; |
734 | ++npending; |
747 | |
735 | |
748 | if (!reqq_push (&res_queue, req)) |
736 | if (!reqq_push (&res_queue, req)) |
749 | /* write a dummy byte to the pipe so fh becomes ready */ |
737 | /* write a dummy byte to the pipe so fh becomes ready */ |
750 | write (respipe [1], &respipe, 1); |
738 | write (respipe [1], &respipe, 1); |
751 | |
739 | |
752 | self->req = 0; |
740 | self->req = 0; |
753 | worker_clear (self); |
741 | worker_clear (self); |
754 | |
742 | |
755 | UNLOCK (reslock); |
743 | X_UNLOCK (reslock); |
756 | } |
744 | } |
757 | |
745 | |
758 | quit: |
746 | quit: |
759 | LOCK (wrklock); |
747 | X_LOCK (wrklock); |
760 | worker_free (self); |
748 | worker_free (self); |
761 | UNLOCK (wrklock); |
749 | X_UNLOCK (wrklock); |
762 | |
750 | |
763 | return 0; |
751 | return 0; |
764 | } |
752 | } |
765 | |
753 | |
766 | /*****************************************************************************/ |
754 | /*****************************************************************************/ |
767 | |
755 | |
768 | static void atfork_prepare (void) |
756 | static void atfork_prepare (void) |
769 | { |
757 | { |
770 | LOCK (wrklock); |
758 | X_LOCK (wrklock); |
771 | LOCK (reqlock); |
759 | X_LOCK (reqlock); |
772 | LOCK (reslock); |
760 | X_LOCK (reslock); |
773 | } |
761 | } |
774 | |
762 | |
775 | static void atfork_parent (void) |
763 | static void atfork_parent (void) |
776 | { |
764 | { |
777 | UNLOCK (reslock); |
765 | X_UNLOCK (reslock); |
778 | UNLOCK (reqlock); |
766 | X_UNLOCK (reqlock); |
779 | UNLOCK (wrklock); |
767 | X_UNLOCK (wrklock); |
780 | } |
768 | } |
781 | |
769 | |
782 | static void atfork_child (void) |
770 | static void atfork_child (void) |
783 | { |
771 | { |
784 | aio_req prv; |
772 | aio_req prv; |
… | |
… | |
806 | nready = 0; |
794 | nready = 0; |
807 | npending = 0; |
795 | npending = 0; |
808 | |
796 | |
809 | close (respipe [0]); |
797 | close (respipe [0]); |
810 | close (respipe [1]); |
798 | close (respipe [1]); |
811 | create_pipe (); |
799 | |
|
|
800 | if (!create_pipe (respipe)) |
|
|
801 | croak ("unable to initialize result pipe"); |
812 | |
802 | |
813 | atfork_parent (); |
803 | atfork_parent (); |
814 | } |
804 | } |
815 | |
805 | |
816 | #define dREQ(reqtype) \ |
806 | #define dREQ(reqtype) \ |
… | |
… | |
999 | }; |
989 | }; |
1000 | |
990 | |
1001 | for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; ) |
991 | for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; ) |
1002 | newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv)); |
992 | newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv)); |
1003 | |
993 | |
1004 | create_pipe (); |
994 | if (!create_pipe (respipe)) |
|
|
995 | croak ("unable to initialize result pipe"); |
|
|
996 | |
1005 | ATFORK (atfork_prepare, atfork_parent, atfork_child); |
997 | X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child); |
|
|
998 | #ifdef _WIN32 |
|
|
999 | X_MUTEX_CHECK (wrklock); |
|
|
1000 | X_MUTEX_CHECK (reslock); |
|
|
1001 | X_MUTEX_CHECK (reqlock); |
|
|
1002 | |
|
|
1003 | X_COND_CHECK (reqwait); |
|
|
1004 | #endif |
1006 | } |
1005 | } |
1007 | |
1006 | |
1008 | void |
1007 | void |
1009 | max_poll_reqs (int nreqs) |
1008 | max_poll_reqs (int nreqs) |
1010 | PROTOTYPE: $ |
1009 | PROTOTYPE: $ |
… | |
… | |
1129 | |
1128 | |
1130 | int |
1129 | int |
1131 | nthreads () |
1130 | nthreads () |
1132 | PROTOTYPE: |
1131 | PROTOTYPE: |
1133 | CODE: |
1132 | CODE: |
1134 | if (WORDACCESS_UNSAFE) LOCK (wrklock); |
1133 | if (WORDACCESS_UNSAFE) X_LOCK (wrklock); |
1135 | RETVAL = started; |
1134 | RETVAL = started; |
1136 | if (WORDACCESS_UNSAFE) UNLOCK (wrklock); |
1135 | if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock); |
1137 | OUTPUT: |
1136 | OUTPUT: |
1138 | RETVAL |
1137 | RETVAL |
1139 | |
1138 | |
1140 | void |
1139 | void |
1141 | set_sync_prepare (SV *cb) |
1140 | set_sync_prepare (SV *cb) |