1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include "libcoro/coro.c" |
5 | #include "libcoro/coro.c" |
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6 | |
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7 | #include <signal.h> |
6 | |
8 | |
7 | #ifdef HAVE_MMAP |
9 | #ifdef HAVE_MMAP |
8 | # include <unistd.h> |
10 | # include <unistd.h> |
9 | # include <sys/mman.h> |
11 | # include <sys/mman.h> |
10 | # ifndef MAP_ANON |
12 | # ifndef MAP_ANON |
… | |
… | |
14 | # undef HAVE_MMAP |
16 | # undef HAVE_MMAP |
15 | # endif |
17 | # endif |
16 | # endif |
18 | # endif |
17 | #endif |
19 | #endif |
18 | |
20 | |
19 | #define MAY_FLUSH /* increases codesize */ |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
20 | |
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21 | /* perl-related */ |
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22 | #define TRANSFER_SAVE_DEFAV 0x00000001 |
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23 | #define TRANSFER_SAVE_DEFSV 0x00000002 |
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24 | #define TRANSFER_SAVE_ERRSV 0x00000004 |
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25 | /* c-related */ |
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26 | #define TRANSFER_SAVE_CCTXT 0x00000008 |
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27 | #ifdef CORO_LAZY_STACK |
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28 | # define TRANSFER_LAZY_STACK 0x00000010 |
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29 | #else |
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30 | # define TRANSFER_LAZY_STACK 0x00000000 |
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31 | #endif |
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32 | |
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33 | #define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV|TRANSFER_SAVE_DEFSV \ |
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34 | |TRANSFER_SAVE_ERRSV|TRANSFER_SAVE_CCTXT) |
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35 | |
22 | |
36 | #define SUB_INIT "Coro::State::initialize" |
23 | #define SUB_INIT "Coro::State::initialize" |
37 | #define UCORO_STATE "_coro_state" |
24 | #define UCORO_STATE "_coro_state" |
38 | |
25 | |
39 | /* The next macro should delcare a variable stacklevel that contains and approximation |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
40 | * to the current C stack pointer. It's property is that it changes with each call |
27 | * to the current C stack pointer. Its property is that it changes with each call |
41 | * and should be unique. */ |
28 | * and should be unique. */ |
42 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
43 | |
30 | |
44 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
31 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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32 | |
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33 | #include "CoroAPI.h" |
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34 | |
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35 | static struct CoroAPI coroapi; |
45 | |
36 | |
46 | /* this is actually not only the c stack but also c registers etc... */ |
37 | /* this is actually not only the c stack but also c registers etc... */ |
47 | typedef struct { |
38 | typedef struct { |
48 | int refcnt; /* pointer reference counter */ |
39 | int refcnt; /* pointer reference counter */ |
49 | int usecnt; /* shared by how many coroutines */ |
40 | int usecnt; /* shared by how many coroutines */ |
… | |
… | |
52 | coro_context cctx; |
43 | coro_context cctx; |
53 | |
44 | |
54 | void *sptr; |
45 | void *sptr; |
55 | long ssize; /* positive == mmap, otherwise malloc */ |
46 | long ssize; /* positive == mmap, otherwise malloc */ |
56 | } coro_stack; |
47 | } coro_stack; |
57 | |
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58 | static coro_stack main_stack = { 1, 0, 0 }; |
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59 | |
48 | |
60 | struct coro { |
49 | struct coro { |
61 | /* the optional C context */ |
50 | /* the optional C context */ |
62 | coro_stack *stack; |
51 | coro_stack *stack; |
63 | void *cursp; |
52 | void *cursp; |
… | |
… | |
68 | SV *defsv; |
57 | SV *defsv; |
69 | SV *errsv; |
58 | SV *errsv; |
70 | |
59 | |
71 | /* saved global state not related to stacks */ |
60 | /* saved global state not related to stacks */ |
72 | U8 dowarn; |
61 | U8 dowarn; |
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62 | I32 in_eval; |
73 | |
63 | |
74 | /* the stacks and related info (callchain etc..) */ |
64 | /* the stacks and related info (callchain etc..) */ |
75 | PERL_SI *curstackinfo; |
65 | PERL_SI *curstackinfo; |
76 | AV *curstack; |
66 | AV *curstack; |
77 | AV *mainstack; |
67 | AV *mainstack; |
… | |
… | |
95 | I32 savestack_max; |
85 | I32 savestack_max; |
96 | OP **retstack; |
86 | OP **retstack; |
97 | I32 retstack_ix; |
87 | I32 retstack_ix; |
98 | I32 retstack_max; |
88 | I32 retstack_max; |
99 | COP *curcop; |
89 | COP *curcop; |
100 | JMPENV start_env; |
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101 | JMPENV *top_env; |
90 | JMPENV *top_env; |
102 | |
91 | |
103 | /* data associated with this coroutine (initial args) */ |
92 | /* data associated with this coroutine (initial args) */ |
104 | AV *args; |
93 | AV *args; |
105 | }; |
94 | }; |
… | |
… | |
206 | |
195 | |
207 | return newpadlist; |
196 | return newpadlist; |
208 | } |
197 | } |
209 | |
198 | |
210 | #ifdef MAY_FLUSH |
199 | #ifdef MAY_FLUSH |
211 | STATIC AV * |
200 | STATIC void |
212 | free_padlist (AV *padlist) |
201 | free_padlist (AV *padlist) |
213 | { |
202 | { |
214 | /* may be during global destruction */ |
203 | /* may be during global destruction */ |
215 | if (SvREFCNT(padlist)) |
204 | if (SvREFCNT(padlist)) |
216 | { |
205 | { |
… | |
… | |
281 | #endif |
270 | #endif |
282 | |
271 | |
283 | #define SB do { |
272 | #define SB do { |
284 | #define SE } while (0) |
273 | #define SE } while (0) |
285 | |
274 | |
286 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
275 | #define LOAD(state) load_state(aTHX_ (state)); |
287 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
276 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
288 | |
277 | |
289 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
278 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
290 | |
279 | |
291 | static void |
280 | static void |
292 | load_state(pTHX_ Coro__State c) |
281 | load_state(pTHX_ Coro__State c) |
293 | { |
282 | { |
294 | PL_dowarn = c->dowarn; |
283 | PL_dowarn = c->dowarn; |
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284 | PL_in_eval = c->in_eval; |
295 | |
285 | |
296 | PL_curstackinfo = c->curstackinfo; |
286 | PL_curstackinfo = c->curstackinfo; |
297 | PL_curstack = c->curstack; |
287 | PL_curstack = c->curstack; |
298 | PL_mainstack = c->mainstack; |
288 | PL_mainstack = c->mainstack; |
299 | PL_stack_sp = c->stack_sp; |
289 | PL_stack_sp = c->stack_sp; |
… | |
… | |
316 | PL_savestack_max = c->savestack_max; |
306 | PL_savestack_max = c->savestack_max; |
317 | PL_retstack = c->retstack; |
307 | PL_retstack = c->retstack; |
318 | PL_retstack_ix = c->retstack_ix; |
308 | PL_retstack_ix = c->retstack_ix; |
319 | PL_retstack_max = c->retstack_max; |
309 | PL_retstack_max = c->retstack_max; |
320 | PL_curcop = c->curcop; |
310 | PL_curcop = c->curcop; |
321 | PL_start_env = c->start_env; |
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322 | PL_top_env = c->top_env; |
311 | PL_top_env = c->top_env; |
323 | |
312 | |
324 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
313 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
325 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
314 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
326 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
315 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
… | |
… | |
366 | |
355 | |
367 | PUSHs (Nullsv); |
356 | PUSHs (Nullsv); |
368 | /* this loop was inspired by pp_caller */ |
357 | /* this loop was inspired by pp_caller */ |
369 | for (;;) |
358 | for (;;) |
370 | { |
359 | { |
371 | do |
360 | while (cxix >= 0) |
372 | { |
361 | { |
373 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
374 | |
363 | |
375 | if (CxTYPE(cx) == CXt_SUB) |
364 | if (CxTYPE(cx) == CXt_SUB) |
376 | { |
365 | { |
… | |
… | |
402 | /* I never used formats, so how should I know how these are implemented? */ |
391 | /* I never used formats, so how should I know how these are implemented? */ |
403 | /* my bold guess is as a simple, plain sub... */ |
392 | /* my bold guess is as a simple, plain sub... */ |
404 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
393 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
405 | } |
394 | } |
406 | } |
395 | } |
407 | while (cxix >= 0); |
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408 | |
396 | |
409 | if (top_si->si_type == PERLSI_MAIN) |
397 | if (top_si->si_type == PERLSI_MAIN) |
410 | break; |
398 | break; |
411 | |
399 | |
412 | top_si = top_si->si_prev; |
400 | top_si = top_si->si_prev; |
… | |
… | |
419 | |
407 | |
420 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
408 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
421 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
409 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
422 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
410 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
423 | |
411 | |
424 | /* I have not the slightest idea of why av_reify is necessary */ |
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425 | /* but if it's missing the defav contents magically get replaced sometimes */ |
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426 | if (c->defav) |
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427 | av_reify (c->defav); |
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428 | |
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429 | c->dowarn = PL_dowarn; |
412 | c->dowarn = PL_dowarn; |
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413 | c->in_eval = PL_in_eval; |
430 | |
414 | |
431 | c->curstackinfo = PL_curstackinfo; |
415 | c->curstackinfo = PL_curstackinfo; |
432 | c->curstack = PL_curstack; |
416 | c->curstack = PL_curstack; |
433 | c->mainstack = PL_mainstack; |
417 | c->mainstack = PL_mainstack; |
434 | c->stack_sp = PL_stack_sp; |
418 | c->stack_sp = PL_stack_sp; |
… | |
… | |
451 | c->savestack_max = PL_savestack_max; |
435 | c->savestack_max = PL_savestack_max; |
452 | c->retstack = PL_retstack; |
436 | c->retstack = PL_retstack; |
453 | c->retstack_ix = PL_retstack_ix; |
437 | c->retstack_ix = PL_retstack_ix; |
454 | c->retstack_max = PL_retstack_max; |
438 | c->retstack_max = PL_retstack_max; |
455 | c->curcop = PL_curcop; |
439 | c->curcop = PL_curcop; |
456 | c->start_env = PL_start_env; |
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457 | c->top_env = PL_top_env; |
440 | c->top_env = PL_top_env; |
458 | } |
441 | } |
459 | |
442 | |
460 | /* |
443 | /* |
461 | * allocate various perl stacks. This is an exact copy |
444 | * allocate various perl stacks. This is an exact copy |
… | |
… | |
504 | * still there is a memleak of 128 bytes... |
487 | * still there is a memleak of 128 bytes... |
505 | */ |
488 | */ |
506 | STATIC void |
489 | STATIC void |
507 | destroy_stacks(pTHX) |
490 | destroy_stacks(pTHX) |
508 | { |
491 | { |
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492 | int destruct = PL_main_cv != Nullcv; |
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493 | |
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494 | if (destruct) |
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495 | { |
509 | /* is this ugly, I ask? */ |
496 | /* is this ugly, I ask? */ |
510 | while (PL_scopestack_ix) |
497 | while (PL_scopestack_ix) |
511 | LEAVE; |
498 | LEAVE; |
512 | |
499 | |
513 | /* sure it is, but more important: is it correct?? :/ */ |
500 | /* sure it is, but more important: is it correct?? :/ */ |
514 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
501 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
515 | FREETMPS; |
502 | FREETMPS; |
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503 | } |
516 | |
504 | |
517 | while (PL_curstackinfo->si_next) |
505 | while (PL_curstackinfo->si_next) |
518 | PL_curstackinfo = PL_curstackinfo->si_next; |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
519 | |
507 | |
520 | while (PL_curstackinfo) |
508 | while (PL_curstackinfo) |
… | |
… | |
525 | dSP; |
513 | dSP; |
526 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
527 | PUTBACK; /* possibly superfluous */ |
515 | PUTBACK; /* possibly superfluous */ |
528 | } |
516 | } |
529 | |
517 | |
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518 | if (destruct) |
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519 | { |
530 | dounwind(-1); |
520 | dounwind(-1); |
531 | |
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532 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
521 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
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522 | } |
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523 | |
533 | Safefree(PL_curstackinfo->si_cxstack); |
524 | Safefree(PL_curstackinfo->si_cxstack); |
534 | Safefree(PL_curstackinfo); |
525 | Safefree(PL_curstackinfo); |
535 | PL_curstackinfo = p; |
526 | PL_curstackinfo = p; |
536 | } |
527 | } |
537 | |
528 | |
… | |
… | |
605 | dSP; |
596 | dSP; |
606 | Coro__State ctx = (Coro__State)arg; |
597 | Coro__State ctx = (Coro__State)arg; |
607 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
598 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
608 | |
599 | |
609 | coro_init_stacks (aTHX); |
600 | coro_init_stacks (aTHX); |
610 | JMPENV_BOOTSTRAP; |
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611 | SPAGAIN; |
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612 | |
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613 | /*PL_curcop = 0;*/ |
601 | /*PL_curcop = 0;*/ |
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602 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
614 | SvREFCNT_dec (GvAV (PL_defgv)); |
603 | SvREFCNT_dec (GvAV (PL_defgv)); |
615 | GvAV (PL_defgv) = ctx->args; |
604 | GvAV (PL_defgv) = ctx->args; |
616 | |
605 | |
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606 | SPAGAIN; |
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607 | |
617 | if (ctx->stack) |
608 | if (ctx->stack) |
618 | { |
609 | { |
619 | ctx->cursp = 0; |
610 | ctx->cursp = 0; |
620 | |
611 | |
621 | PUSHMARK(SP); |
612 | PUSHMARK(SP); |
622 | PUTBACK; |
613 | PUTBACK; |
623 | (void) call_sv (sub_init, G_VOID|G_NOARGS); |
614 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
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615 | |
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616 | if (SvTRUE (ERRSV)) |
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617 | croak (NULL); |
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618 | else |
624 | croak ("FATAL: CCTXT coroutine returned!"); |
619 | croak ("FATAL: CCTXT coroutine returned!"); |
625 | } |
620 | } |
626 | else |
621 | else |
627 | { |
622 | { |
628 | UNOP myop; |
623 | UNOP myop; |
629 | |
624 | |
… | |
… | |
655 | { |
650 | { |
656 | /* |
651 | /* |
657 | * this is a _very_ stripped down perl interpreter ;) |
652 | * this is a _very_ stripped down perl interpreter ;) |
658 | */ |
653 | */ |
659 | Coro__State ctx = (Coro__State)arg; |
654 | Coro__State ctx = (Coro__State)arg; |
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655 | JMPENV coro_start_env; |
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656 | |
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657 | /* same as JMPENV_BOOTSTRAP */ |
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658 | Zero(&coro_start_env, 1, JMPENV); |
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659 | coro_start_env.je_ret = -1; |
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660 | coro_start_env.je_mustcatch = TRUE; |
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661 | PL_top_env = &coro_start_env; |
660 | |
662 | |
661 | ctx->cursp = 0; |
663 | ctx->cursp = 0; |
662 | PL_op = PL_op->op_next; |
664 | PL_op = PL_op->op_next; |
663 | CALLRUNOPS(aTHX); |
665 | CALLRUNOPS(aTHX); |
664 | /*NORETURN*/ |
666 | |
665 | abort (); |
667 | abort (); |
666 | } |
668 | } |
667 | |
669 | |
668 | STATIC void |
670 | STATIC void |
669 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
671 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
670 | { |
672 | { |
671 | dSP; |
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672 | dSTACKLEVEL; |
673 | dSTACKLEVEL; |
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674 | static struct coro *xnext; |
673 | |
675 | |
674 | if (prev != next) |
676 | if (prev != next) |
675 | { |
677 | { |
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678 | xnext = next; |
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679 | |
676 | if (next->mainstack) |
680 | if (next->mainstack) |
677 | { |
681 | { |
678 | SAVE (prev, flags); |
682 | SAVE (prev, flags); |
679 | LOAD (next); |
683 | LOAD (next); |
680 | |
684 | |
… | |
… | |
703 | continue_coro, (void *)next, |
707 | continue_coro, (void *)next, |
704 | next->stack->sptr, labs (next->stack->ssize)); |
708 | next->stack->sptr, labs (next->stack->ssize)); |
705 | } |
709 | } |
706 | |
710 | |
707 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
711 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
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712 | /* don't add any code here */ |
708 | } |
713 | } |
709 | |
714 | |
710 | } |
715 | } |
711 | else if (next->tmps_ix == -2) |
716 | else if (next->tmps_ix == -2) |
712 | croak ("tried to transfer to running coroutine"); |
717 | croak ("tried to transfer to running coroutine"); |
… | |
… | |
733 | allocate_stack (next, 1); |
738 | allocate_stack (next, 1); |
734 | coro_create (&(next->stack->cctx), |
739 | coro_create (&(next->stack->cctx), |
735 | setup_coro, (void *)next, |
740 | setup_coro, (void *)next, |
736 | next->stack->sptr, labs (next->stack->ssize)); |
741 | next->stack->sptr, labs (next->stack->ssize)); |
737 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
742 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
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743 | /* don't add any code here */ |
738 | } |
744 | } |
739 | } |
745 | } |
740 | else |
746 | else |
741 | setup_coro (next); |
747 | setup_coro (next); |
742 | } |
748 | } |
743 | } |
749 | } |
744 | |
750 | |
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751 | /* |
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752 | * xnext is now either prev or next, depending on wether |
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753 | * we switched the c stack or not. that's why i use a global |
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754 | * variable, that should become thread-specific at one point. |
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755 | */ |
745 | next->cursp = stacklevel; |
756 | xnext->cursp = stacklevel; |
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757 | } |
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758 | |
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759 | static struct coro * |
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760 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
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761 | { |
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762 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
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763 | { |
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764 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
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765 | |
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766 | if (!he) |
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767 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
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768 | |
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769 | arg = HeVAL(he); |
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770 | } |
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771 | |
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772 | /* must also be changed inside Coro::Cont::yield */ |
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773 | if (SvROK(arg) && SvOBJECT(SvRV(arg)) |
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774 | && SvSTASH(SvRV(arg)) == coro_state_stash) |
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775 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
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776 | |
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777 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
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778 | /*NORETURN*/ |
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779 | } |
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780 | |
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781 | static void |
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782 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
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|
783 | { |
|
|
784 | transfer(aTHX_ |
|
|
785 | sv_to_coro (prev, "Coro::transfer", "prev"), |
|
|
786 | sv_to_coro (next, "Coro::transfer", "next"), |
|
|
787 | flags); |
|
|
788 | } |
|
|
789 | |
|
|
790 | /** Coro ********************************************************************/ |
|
|
791 | |
|
|
792 | #define PRIO_MAX 3 |
|
|
793 | #define PRIO_HIGH 1 |
|
|
794 | #define PRIO_NORMAL 0 |
|
|
795 | #define PRIO_LOW -1 |
|
|
796 | #define PRIO_IDLE -3 |
|
|
797 | #define PRIO_MIN -4 |
|
|
798 | |
|
|
799 | /* for Coro.pm */ |
|
|
800 | static GV *coro_current, *coro_idle; |
|
|
801 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
802 | static int coro_nready; |
|
|
803 | |
|
|
804 | static void |
|
|
805 | coro_enq (SV *sv) |
|
|
806 | { |
|
|
807 | if (SvROK (sv)) |
|
|
808 | { |
|
|
809 | SV *hv = SvRV (sv); |
|
|
810 | if (SvTYPE (hv) == SVt_PVHV) |
|
|
811 | { |
|
|
812 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
|
|
813 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
814 | |
|
|
815 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
816 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
817 | : prio; |
|
|
818 | |
|
|
819 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
820 | coro_nready++; |
|
|
821 | |
|
|
822 | return; |
|
|
823 | } |
|
|
824 | } |
|
|
825 | |
|
|
826 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
827 | } |
|
|
828 | |
|
|
829 | static SV * |
|
|
830 | coro_deq (int min_prio) |
|
|
831 | { |
|
|
832 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
833 | |
|
|
834 | min_prio -= PRIO_MIN; |
|
|
835 | if (min_prio < 0) |
|
|
836 | min_prio = 0; |
|
|
837 | |
|
|
838 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
839 | if (av_len (coro_ready[prio]) >= 0) |
|
|
840 | { |
|
|
841 | coro_nready--; |
|
|
842 | return av_shift (coro_ready[prio]); |
|
|
843 | } |
|
|
844 | |
|
|
845 | return 0; |
|
|
846 | } |
|
|
847 | |
|
|
848 | static void |
|
|
849 | api_ready (SV *coro) |
|
|
850 | { |
|
|
851 | coro_enq (SvREFCNT_inc (coro)); |
|
|
852 | } |
|
|
853 | |
|
|
854 | static void |
|
|
855 | api_schedule (int cede) |
|
|
856 | { |
|
|
857 | SV *prev, *next; |
|
|
858 | |
|
|
859 | prev = GvSV (coro_current); |
|
|
860 | |
|
|
861 | if (cede) |
|
|
862 | coro_enq (SvREFCNT_inc (prev)); |
|
|
863 | |
|
|
864 | next = coro_deq (PRIO_MIN); |
|
|
865 | |
|
|
866 | if (!next) |
|
|
867 | next = SvREFCNT_inc (GvSV (coro_idle)); |
|
|
868 | |
|
|
869 | GvSV (coro_current) = SvREFCNT_inc (next); |
|
|
870 | transfer (aTHX_ |
|
|
871 | sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
|
|
872 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
|
|
873 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
874 | SvREFCNT_dec (next); |
|
|
875 | SvREFCNT_dec (prev); |
746 | } |
876 | } |
747 | |
877 | |
748 | MODULE = Coro::State PACKAGE = Coro::State |
878 | MODULE = Coro::State PACKAGE = Coro::State |
749 | |
879 | |
750 | PROTOTYPES: ENABLE |
880 | PROTOTYPES: ENABLE |
… | |
… | |
762 | |
892 | |
763 | if (!padlist_cache) |
893 | if (!padlist_cache) |
764 | padlist_cache = newHV (); |
894 | padlist_cache = newHV (); |
765 | |
895 | |
766 | main_mainstack = PL_mainstack; |
896 | main_mainstack = PL_mainstack; |
|
|
897 | |
|
|
898 | coroapi.ver = CORO_API_VERSION; |
|
|
899 | coroapi.transfer = api_transfer; |
767 | } |
900 | } |
768 | |
901 | |
769 | Coro::State |
902 | Coro::State |
770 | _newprocess(args) |
903 | _newprocess(args) |
771 | SV * args |
904 | SV * args |
… | |
… | |
785 | RETVAL = coro; |
918 | RETVAL = coro; |
786 | OUTPUT: |
919 | OUTPUT: |
787 | RETVAL |
920 | RETVAL |
788 | |
921 | |
789 | void |
922 | void |
790 | transfer(prev, next, flags = TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK) |
923 | transfer(prev, next, flags) |
791 | Coro::State_or_hashref prev |
924 | Coro::State_or_hashref prev |
792 | Coro::State_or_hashref next |
925 | Coro::State_or_hashref next |
793 | int flags |
926 | int flags |
794 | PROTOTYPE: @ |
927 | PROTOTYPE: @ |
795 | CODE: |
928 | CODE: |
|
|
929 | PUTBACK; |
796 | transfer (aTHX_ prev, next, flags); |
930 | transfer (aTHX_ prev, next, flags); |
|
|
931 | SPAGAIN; |
797 | |
932 | |
798 | void |
933 | void |
799 | DESTROY(coro) |
934 | DESTROY(coro) |
800 | Coro::State coro |
935 | Coro::State coro |
801 | CODE: |
936 | CODE: |
802 | |
937 | |
803 | if (coro->mainstack && coro->mainstack != main_mainstack) |
938 | if (coro->mainstack && coro->mainstack != main_mainstack) |
804 | { |
939 | { |
805 | struct coro temp; |
940 | struct coro temp; |
806 | |
941 | |
|
|
942 | PUTBACK; |
807 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
943 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
808 | LOAD(aTHX_ coro); |
944 | LOAD(aTHX_ coro); |
|
|
945 | SPAGAIN; |
809 | |
946 | |
810 | destroy_stacks (aTHX); |
947 | destroy_stacks (aTHX); |
811 | |
948 | |
812 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
949 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
950 | SPAGAIN; |
813 | |
951 | |
814 | coro->mainstack = 0; |
952 | coro->mainstack = 0; |
815 | } |
953 | } |
816 | |
954 | |
817 | deallocate_stack (coro); |
955 | deallocate_stack (coro); |
… | |
… | |
823 | CODE: |
961 | CODE: |
824 | #ifdef MAY_FLUSH |
962 | #ifdef MAY_FLUSH |
825 | flush_padlist_cache (); |
963 | flush_padlist_cache (); |
826 | #endif |
964 | #endif |
827 | |
965 | |
|
|
966 | void |
|
|
967 | _exit(code) |
|
|
968 | int code |
|
|
969 | PROTOTYPE: $ |
|
|
970 | CODE: |
|
|
971 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
972 | _exit (code); |
|
|
973 | #else |
|
|
974 | signal (SIGTERM, SIG_DFL); |
|
|
975 | raise (SIGTERM); |
|
|
976 | exit (code); |
|
|
977 | #endif |
|
|
978 | |
828 | MODULE = Coro::State PACKAGE = Coro::Cont |
979 | MODULE = Coro::State PACKAGE = Coro::Cont |
829 | |
980 | |
830 | # this is slightly dirty |
981 | # this is slightly dirty (should expose a c-level api) |
831 | |
982 | |
832 | void |
983 | void |
833 | yield(...) |
984 | yield(...) |
834 | PROTOTYPE: @ |
985 | PROTOTYPE: @ |
835 | CODE: |
986 | CODE: |
… | |
… | |
853 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1004 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
854 | SvREFCNT_dec (sv); |
1005 | SvREFCNT_dec (sv); |
855 | |
1006 | |
856 | transfer(aTHX_ prev, next, 0); |
1007 | transfer(aTHX_ prev, next, 0); |
857 | |
1008 | |
|
|
1009 | MODULE = Coro::State PACKAGE = Coro |
|
|
1010 | |
|
|
1011 | # this is slightly dirty (should expose a c-level api) |
|
|
1012 | |
|
|
1013 | BOOT: |
|
|
1014 | { |
|
|
1015 | int i; |
|
|
1016 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
1017 | |
|
|
1018 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1019 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1020 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1021 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1022 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1023 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1024 | |
|
|
1025 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1026 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1027 | |
|
|
1028 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1029 | coro_ready[i] = newAV (); |
|
|
1030 | |
|
|
1031 | { |
|
|
1032 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1033 | |
|
|
1034 | coroapi.schedule = api_schedule; |
|
|
1035 | coroapi.ready = api_ready; |
|
|
1036 | coroapi.nready = &coro_nready; |
|
|
1037 | coroapi.current = coro_current; |
|
|
1038 | |
|
|
1039 | GCoroAPI = &coroapi; |
|
|
1040 | sv_setiv(sv, (IV)&coroapi); |
|
|
1041 | SvREADONLY_on(sv); |
|
|
1042 | } |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | void |
|
|
1046 | ready(self) |
|
|
1047 | SV * self |
|
|
1048 | CODE: |
|
|
1049 | api_ready (self); |
|
|
1050 | |
|
|
1051 | int |
|
|
1052 | nready(...) |
|
|
1053 | PROTOTYPE: |
|
|
1054 | CODE: |
|
|
1055 | RETVAL = coro_nready; |
|
|
1056 | OUTPUT: |
|
|
1057 | RETVAL |
|
|
1058 | |
|
|
1059 | void |
|
|
1060 | schedule(...) |
|
|
1061 | PROTOTYPE: |
|
|
1062 | ALIAS: |
|
|
1063 | cede = 1 |
|
|
1064 | CODE: |
|
|
1065 | api_schedule (ix); |
|
|
1066 | |