… | |
… | |
4 | #include "perl.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
5 | #include "XSUB.h" |
6 | |
6 | |
7 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
8 | |
8 | |
9 | #if USE_VALGRIND |
|
|
10 | # include <valgrind/valgrind.h> |
|
|
11 | #endif |
|
|
12 | |
|
|
13 | /* the maximum number of idle cctx that will be pooled */ |
|
|
14 | #define MAX_IDLE_CCTX 8 |
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|
15 | |
|
|
16 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
|
|
17 | (PERL_REVISION > (a) \ |
|
|
18 | || (PERL_REVISION == (a) \ |
|
|
19 | && (PERL_VERSION > (b) \ |
|
|
20 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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21 | |
|
|
22 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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|
23 | # ifndef PL_ppaddr |
|
|
24 | # define PL_ppaddr ppaddr |
|
|
25 | # endif |
|
|
26 | # ifndef call_sv |
|
|
27 | # define call_sv perl_call_sv |
|
|
28 | # endif |
|
|
29 | # ifndef get_sv |
|
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30 | # define get_sv perl_get_sv |
|
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31 | # endif |
|
|
32 | # ifndef get_cv |
|
|
33 | # define get_cv perl_get_cv |
|
|
34 | # endif |
|
|
35 | # ifndef IS_PADGV |
|
|
36 | # define IS_PADGV(v) 0 |
|
|
37 | # endif |
|
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38 | # ifndef IS_PADCONST |
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39 | # define IS_PADCONST(v) 0 |
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40 | # endif |
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41 | #endif |
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42 | |
|
|
43 | #include <stdio.h> |
9 | #include <stdio.h> |
44 | #include <errno.h> |
10 | #include <errno.h> |
45 | |
11 | #include <assert.h> |
46 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
|
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47 | # undef STACKGUARD |
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48 | #endif |
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49 | |
|
|
50 | #ifndef STACKGUARD |
|
|
51 | # define STACKGUARD 0 |
|
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52 | #endif |
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|
53 | |
12 | |
54 | #ifdef HAVE_MMAP |
13 | #ifdef HAVE_MMAP |
55 | # include <unistd.h> |
14 | # include <unistd.h> |
56 | # include <sys/mman.h> |
15 | # include <sys/mman.h> |
57 | # ifndef MAP_ANONYMOUS |
16 | # ifndef MAP_ANONYMOUS |
… | |
… | |
72 | #else |
31 | #else |
73 | # define PAGESIZE 0 |
32 | # define PAGESIZE 0 |
74 | # define BOOT_PAGESIZE (void)0 |
33 | # define BOOT_PAGESIZE (void)0 |
75 | #endif |
34 | #endif |
76 | |
35 | |
|
|
36 | #if USE_VALGRIND |
|
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37 | # include <valgrind/valgrind.h> |
|
|
38 | #endif |
|
|
39 | |
|
|
40 | /* the maximum number of idle cctx that will be pooled */ |
|
|
41 | #define MAX_IDLE_CCTX 8 |
|
|
42 | |
|
|
43 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
|
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44 | (PERL_REVISION > (a) \ |
|
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45 | || (PERL_REVISION == (a) \ |
|
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46 | && (PERL_VERSION > (b) \ |
|
|
47 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
|
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48 | |
|
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49 | #if !PERL_VERSION_ATLEAST (5,6,0) |
|
|
50 | # ifndef PL_ppaddr |
|
|
51 | # define PL_ppaddr ppaddr |
|
|
52 | # endif |
|
|
53 | # ifndef call_sv |
|
|
54 | # define call_sv perl_call_sv |
|
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55 | # endif |
|
|
56 | # ifndef get_sv |
|
|
57 | # define get_sv perl_get_sv |
|
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58 | # endif |
|
|
59 | # ifndef get_cv |
|
|
60 | # define get_cv perl_get_cv |
|
|
61 | # endif |
|
|
62 | # ifndef IS_PADGV |
|
|
63 | # define IS_PADGV(v) 0 |
|
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64 | # endif |
|
|
65 | # ifndef IS_PADCONST |
|
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66 | # define IS_PADCONST(v) 0 |
|
|
67 | # endif |
|
|
68 | #endif |
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69 | |
|
|
70 | /* 5.8.7 */ |
|
|
71 | #ifndef SvRV_set |
|
|
72 | # define SvRV_set(s,v) SvRV(s) = (v) |
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73 | #endif |
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74 | |
|
|
75 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
|
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76 | # undef STACKGUARD |
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77 | #endif |
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78 | |
|
|
79 | #ifndef STACKGUARD |
|
|
80 | # define STACKGUARD 0 |
|
|
81 | #endif |
|
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82 | |
|
|
83 | /* prefer perl internal functions over our own? */ |
|
|
84 | #ifndef PREFER_PERL_FUNCTIONS |
|
|
85 | # define PREFER_PERL_FUNCTIONS 0 |
|
|
86 | #endif |
|
|
87 | |
77 | /* The next macro should declare a variable stacklevel that contains and approximation |
88 | /* The next macro should declare a variable stacklevel that contains and approximation |
78 | * to the current C stack pointer. Its property is that it changes with each call |
89 | * to the current C stack pointer. Its property is that it changes with each call |
79 | * and should be unique. */ |
90 | * and should be unique. */ |
80 | #define dSTACKLEVEL int stacklevel |
91 | #define dSTACKLEVEL int stacklevel |
81 | #define STACKLEVEL ((void *)&stacklevel) |
92 | #define STACKLEVEL ((void *)&stacklevel) |
82 | |
93 | |
83 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
94 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
84 | |
95 | |
85 | #if __GNUC__ >= 3 |
96 | #if __GNUC__ >= 3 |
86 | # define attribute(x) __attribute__(x) |
97 | # define attribute(x) __attribute__(x) |
|
|
98 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
87 | #else |
99 | #else |
88 | # define attribute(x) |
100 | # define attribute(x) |
|
|
101 | # define BARRIER |
89 | #endif |
102 | #endif |
90 | |
103 | |
91 | #define NOINLINE attribute ((noinline)) |
104 | #define NOINLINE attribute ((noinline)) |
92 | |
105 | |
93 | #include "CoroAPI.h" |
106 | #include "CoroAPI.h" |
… | |
… | |
99 | #else |
112 | #else |
100 | # define LOCK (void)0 |
113 | # define LOCK (void)0 |
101 | # define UNLOCK (void)0 |
114 | # define UNLOCK (void)0 |
102 | #endif |
115 | #endif |
103 | |
116 | |
|
|
117 | /* helper storage struct for Coro::AIO */ |
104 | struct io_state |
118 | struct io_state |
105 | { |
119 | { |
106 | int errorno; |
120 | int errorno; |
107 | I32 laststype; |
121 | I32 laststype; |
108 | int laststatval; |
122 | int laststatval; |
… | |
… | |
124 | /* the stack */ |
138 | /* the stack */ |
125 | void *sptr; |
139 | void *sptr; |
126 | long ssize; /* positive == mmap, otherwise malloc */ |
140 | long ssize; /* positive == mmap, otherwise malloc */ |
127 | |
141 | |
128 | /* cpu state */ |
142 | /* cpu state */ |
129 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
143 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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|
144 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
130 | JMPENV *top_env; |
145 | JMPENV *top_env; |
131 | coro_context cctx; |
146 | coro_context cctx; |
132 | |
147 | |
133 | int inuse; |
148 | int inuse; |
134 | |
149 | |
… | |
… | |
136 | int valgrind_id; |
151 | int valgrind_id; |
137 | #endif |
152 | #endif |
138 | } coro_cctx; |
153 | } coro_cctx; |
139 | |
154 | |
140 | enum { |
155 | enum { |
141 | CF_RUNNING = 0x0001, /* coroutine is running */ |
156 | CF_RUNNING = 0x0001, /* coroutine is running */ |
142 | CF_READY = 0x0002, /* coroutine is ready */ |
157 | CF_READY = 0x0002, /* coroutine is ready */ |
143 | CF_NEW = 0x0004, /* ahs never been switched to */ |
158 | CF_NEW = 0x0004, /* has never been switched to */ |
|
|
159 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
144 | }; |
160 | }; |
145 | |
161 | |
146 | /* this is a structure representing a perl-level coroutine */ |
162 | /* this is a structure representing a perl-level coroutine */ |
147 | struct coro { |
163 | struct coro { |
148 | /* the c coroutine allocated to this perl coroutine, if any */ |
164 | /* the c coroutine allocated to this perl coroutine, if any */ |
… | |
… | |
253 | |
269 | |
254 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
270 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
255 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
271 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
256 | else |
272 | else |
257 | { |
273 | { |
258 | #if 0 |
274 | #if PREFER_PERL_FUNCTIONS |
259 | /* this is probably cleaner, but also slower? */ |
275 | /* this is probably cleaner, but also slower? */ |
260 | CV *cp = Perl_cv_clone (cv); |
276 | CV *cp = Perl_cv_clone (cv); |
261 | CvPADLIST (cv) = CvPADLIST (cp); |
277 | CvPADLIST (cv) = CvPADLIST (cp); |
262 | CvPADLIST (cp) = 0; |
278 | CvPADLIST (cp) = 0; |
263 | SvREFCNT_dec (cp); |
279 | SvREFCNT_dec (cp); |
… | |
… | |
344 | /* |
360 | /* |
345 | * the worst thing you can imagine happens first - we have to save |
361 | * the worst thing you can imagine happens first - we have to save |
346 | * (and reinitialize) all cv's in the whole callchain :( |
362 | * (and reinitialize) all cv's in the whole callchain :( |
347 | */ |
363 | */ |
348 | |
364 | |
|
|
365 | EXTEND (SP, 3 + 1); |
349 | PUSHs (Nullsv); |
366 | PUSHs (Nullsv); |
350 | /* this loop was inspired by pp_caller */ |
367 | /* this loop was inspired by pp_caller */ |
351 | for (;;) |
368 | for (;;) |
352 | { |
369 | { |
353 | while (cxix >= 0) |
370 | while (cxix >= 0) |
… | |
… | |
359 | CV *cv = cx->blk_sub.cv; |
376 | CV *cv = cx->blk_sub.cv; |
360 | |
377 | |
361 | if (CvDEPTH (cv)) |
378 | if (CvDEPTH (cv)) |
362 | { |
379 | { |
363 | EXTEND (SP, 3); |
380 | EXTEND (SP, 3); |
364 | |
|
|
365 | PUSHs ((SV *)CvPADLIST (cv)); |
381 | PUSHs ((SV *)CvPADLIST (cv)); |
366 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
382 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
367 | PUSHs ((SV *)cv); |
383 | PUSHs ((SV *)cv); |
368 | |
384 | |
369 | CvDEPTH (cv) = 0; |
385 | CvDEPTH (cv) = 0; |
370 | get_padlist (cv); |
386 | get_padlist (cv); |
371 | } |
387 | } |
372 | } |
388 | } |
373 | #ifdef CXt_FORMAT |
|
|
374 | else if (CxTYPE (cx) == CXt_FORMAT) |
|
|
375 | { |
|
|
376 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
377 | /* my bold guess is as a simple, plain sub... */ |
|
|
378 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
379 | } |
|
|
380 | #endif |
|
|
381 | } |
389 | } |
382 | |
390 | |
383 | if (top_si->si_type == PERLSI_MAIN) |
391 | if (top_si->si_type == PERLSI_MAIN) |
384 | break; |
392 | break; |
385 | |
393 | |
… | |
… | |
405 | * allocate various perl stacks. This is an exact copy |
413 | * allocate various perl stacks. This is an exact copy |
406 | * of perl.c:init_stacks, except that it uses less memory |
414 | * of perl.c:init_stacks, except that it uses less memory |
407 | * on the (sometimes correct) assumption that coroutines do |
415 | * on the (sometimes correct) assumption that coroutines do |
408 | * not usually need a lot of stackspace. |
416 | * not usually need a lot of stackspace. |
409 | */ |
417 | */ |
|
|
418 | #if PREFER_PERL_FUNCTIONS |
|
|
419 | # define coro_init_stacks init_stacks |
|
|
420 | #else |
410 | static void |
421 | static void |
411 | coro_init_stacks () |
422 | coro_init_stacks () |
412 | { |
423 | { |
413 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
424 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
414 | PL_curstackinfo->si_type = PERLSI_MAIN; |
425 | PL_curstackinfo->si_type = PERLSI_MAIN; |
… | |
… | |
444 | New(54,PL_retstack,16,OP*); |
455 | New(54,PL_retstack,16,OP*); |
445 | PL_retstack_ix = 0; |
456 | PL_retstack_ix = 0; |
446 | PL_retstack_max = 16; |
457 | PL_retstack_max = 16; |
447 | #endif |
458 | #endif |
448 | } |
459 | } |
|
|
460 | #endif |
449 | |
461 | |
450 | /* |
462 | /* |
451 | * destroy the stacks, the callchain etc... |
463 | * destroy the stacks, the callchain etc... |
452 | */ |
464 | */ |
453 | static void |
465 | static void |
454 | coro_destroy_stacks () |
466 | coro_destroy_stacks () |
455 | { |
467 | { |
456 | if (!IN_DESTRUCT) |
468 | if (!IN_DESTRUCT) |
457 | { |
469 | { |
458 | /* is this ugly, I ask? */ |
470 | /* restore all saved variables and stuff */ |
459 | LEAVE_SCOPE (0); |
471 | LEAVE_SCOPE (0); |
|
|
472 | assert (PL_tmps_floor == -1); |
460 | |
473 | |
461 | /* sure it is, but more important: is it correct?? :/ */ |
474 | /* free all temporaries */ |
462 | FREETMPS; |
475 | FREETMPS; |
|
|
476 | assert (PL_tmps_ix == -1); |
463 | |
477 | |
|
|
478 | /* unwind all extra stacks */ |
464 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
479 | POPSTACK_TO (PL_mainstack); |
|
|
480 | |
|
|
481 | /* unwind main stack */ |
|
|
482 | dounwind (-1); |
465 | } |
483 | } |
466 | |
484 | |
467 | while (PL_curstackinfo->si_next) |
485 | while (PL_curstackinfo->si_next) |
468 | PL_curstackinfo = PL_curstackinfo->si_next; |
486 | PL_curstackinfo = PL_curstackinfo->si_next; |
469 | |
487 | |
470 | while (PL_curstackinfo) |
488 | while (PL_curstackinfo) |
471 | { |
489 | { |
472 | PERL_SI *p = PL_curstackinfo->si_prev; |
490 | PERL_SI *p = PL_curstackinfo->si_prev; |
473 | |
491 | |
474 | { /*D*//*remove*/ |
|
|
475 | dSP; |
|
|
476 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
477 | PUTBACK; /* possibly superfluous */ |
|
|
478 | } |
|
|
479 | |
|
|
480 | if (!IN_DESTRUCT) |
492 | if (!IN_DESTRUCT) |
481 | { |
|
|
482 | dounwind (-1);/*D*//*remove*/ |
|
|
483 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
493 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
484 | } |
|
|
485 | |
494 | |
486 | Safefree (PL_curstackinfo->si_cxstack); |
495 | Safefree (PL_curstackinfo->si_cxstack); |
487 | Safefree (PL_curstackinfo); |
496 | Safefree (PL_curstackinfo); |
488 | PL_curstackinfo = p; |
497 | PL_curstackinfo = p; |
489 | } |
498 | } |
… | |
… | |
593 | { |
602 | { |
594 | coro_cctx *cctx; |
603 | coro_cctx *cctx; |
595 | |
604 | |
596 | ++cctx_count; |
605 | ++cctx_count; |
597 | |
606 | |
598 | New (0, cctx, 1, coro_cctx); |
607 | Newz (0, cctx, 1, coro_cctx); |
599 | |
608 | |
600 | #if HAVE_MMAP |
609 | #if HAVE_MMAP |
601 | |
610 | |
602 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
611 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
603 | /* mmap supposedly does allocate-on-write for us */ |
612 | /* mmap supposedly does allocate-on-write for us */ |
… | |
… | |
704 | { |
713 | { |
705 | dSTACKLEVEL; |
714 | dSTACKLEVEL; |
706 | |
715 | |
707 | /* sometimes transfer is only called to set idle_sp */ |
716 | /* sometimes transfer is only called to set idle_sp */ |
708 | if (!next) |
717 | if (!next) |
|
|
718 | { |
709 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
719 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
720 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
721 | } |
710 | else if (prev != next) |
722 | else if (prev != next) |
711 | { |
723 | { |
712 | coro_cctx *prev__cctx; |
724 | coro_cctx *prev__cctx; |
713 | |
725 | |
714 | if (prev->flags & CF_NEW) |
726 | if (prev->flags & CF_NEW) |
… | |
… | |
724 | if (!prev->flags & CF_RUNNING) |
736 | if (!prev->flags & CF_RUNNING) |
725 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
737 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
726 | |
738 | |
727 | if (next->flags & CF_RUNNING) |
739 | if (next->flags & CF_RUNNING) |
728 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
740 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
741 | |
|
|
742 | if (next->flags & CF_DESTROYED) |
|
|
743 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
729 | |
744 | |
730 | prev->flags &= ~CF_RUNNING; |
745 | prev->flags &= ~CF_RUNNING; |
731 | next->flags |= CF_RUNNING; |
746 | next->flags |= CF_RUNNING; |
732 | |
747 | |
733 | LOCK; |
748 | LOCK; |
… | |
… | |
739 | /* first get rid of the old state */ |
754 | /* first get rid of the old state */ |
740 | save_perl (prev); |
755 | save_perl (prev); |
741 | /* setup coroutine call */ |
756 | /* setup coroutine call */ |
742 | setup_coro (next); |
757 | setup_coro (next); |
743 | /* need a new stack */ |
758 | /* need a new stack */ |
744 | assert (!next->stack); |
759 | assert (!next->cctx); |
745 | } |
760 | } |
746 | else |
761 | else |
747 | { |
762 | { |
748 | /* coroutine already started */ |
763 | /* coroutine already started */ |
749 | save_perl (prev); |
764 | save_perl (prev); |
… | |
… | |
754 | |
769 | |
755 | /* possibly "free" the cctx */ |
770 | /* possibly "free" the cctx */ |
756 | if (prev__cctx->idle_sp == STACKLEVEL) |
771 | if (prev__cctx->idle_sp == STACKLEVEL) |
757 | { |
772 | { |
758 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
773 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
759 | assert (PL_top_env == prev__cctx->top_env); |
774 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
760 | |
775 | |
761 | prev->cctx = 0; |
776 | prev->cctx = 0; |
762 | |
777 | |
763 | cctx_put (prev__cctx); |
778 | cctx_put (prev__cctx); |
764 | prev__cctx->inuse = 0; |
779 | prev__cctx->inuse = 0; |
… | |
… | |
777 | PL_top_env = next->cctx->top_env; |
792 | PL_top_env = next->cctx->top_env; |
778 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
793 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
779 | } |
794 | } |
780 | |
795 | |
781 | free_coro_mortal (); |
796 | free_coro_mortal (); |
782 | |
|
|
783 | UNLOCK; |
797 | UNLOCK; |
784 | } |
798 | } |
785 | } |
799 | } |
786 | |
800 | |
787 | struct transfer_args |
801 | struct transfer_args |
… | |
… | |
789 | struct coro *prev, *next; |
803 | struct coro *prev, *next; |
790 | }; |
804 | }; |
791 | |
805 | |
792 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
806 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
793 | |
807 | |
794 | static void |
808 | static int |
795 | coro_state_destroy (struct coro *coro) |
809 | coro_state_destroy (struct coro *coro) |
796 | { |
810 | { |
797 | if (coro->refcnt--) |
811 | if (coro->flags & CF_DESTROYED) |
798 | return; |
812 | return 0; |
|
|
813 | |
|
|
814 | coro->flags |= CF_DESTROYED; |
799 | |
815 | |
800 | if (coro->mainstack && coro->mainstack != main_mainstack) |
816 | if (coro->mainstack && coro->mainstack != main_mainstack) |
801 | { |
817 | { |
|
|
818 | assert (!(coro->flags & CF_RUNNING)); |
|
|
819 | |
802 | struct coro temp; |
820 | struct coro temp; |
803 | Zero (&temp, 1, struct coro); |
821 | Zero (&temp, 1, struct coro); |
804 | temp.save = CORO_SAVE_ALL; |
822 | temp.save = CORO_SAVE_ALL; |
805 | |
823 | |
806 | if (coro->flags & CF_RUNNING) |
824 | if (coro->flags & CF_RUNNING) |
… | |
… | |
816 | coro->mainstack = 0; |
834 | coro->mainstack = 0; |
817 | } |
835 | } |
818 | |
836 | |
819 | cctx_destroy (coro->cctx); |
837 | cctx_destroy (coro->cctx); |
820 | SvREFCNT_dec (coro->args); |
838 | SvREFCNT_dec (coro->args); |
821 | Safefree (coro); |
839 | |
|
|
840 | return 1; |
822 | } |
841 | } |
823 | |
842 | |
824 | static int |
843 | static int |
825 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
844 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
826 | { |
845 | { |
827 | struct coro *coro = (struct coro *)mg->mg_ptr; |
846 | struct coro *coro = (struct coro *)mg->mg_ptr; |
828 | mg->mg_ptr = 0; |
847 | mg->mg_ptr = 0; |
829 | |
848 | |
|
|
849 | if (--coro->refcnt < 0) |
|
|
850 | { |
830 | coro_state_destroy (coro); |
851 | coro_state_destroy (coro); |
|
|
852 | Safefree (coro); |
|
|
853 | } |
831 | |
854 | |
832 | return 0; |
855 | return 0; |
833 | } |
856 | } |
834 | |
857 | |
835 | static int |
858 | static int |
… | |
… | |
842 | return 0; |
865 | return 0; |
843 | } |
866 | } |
844 | |
867 | |
845 | static MGVTBL coro_state_vtbl = { |
868 | static MGVTBL coro_state_vtbl = { |
846 | 0, 0, 0, 0, |
869 | 0, 0, 0, 0, |
847 | coro_state_clear, |
870 | coro_state_free, |
848 | 0, |
871 | 0, |
849 | #ifdef MGf_DUP |
872 | #ifdef MGf_DUP |
850 | coro_state_dup, |
873 | coro_state_dup, |
851 | #else |
874 | #else |
852 | # define MGf_DUP 0 |
875 | # define MGf_DUP 0 |
… | |
… | |
954 | coro = SvSTATE (coro_sv); |
977 | coro = SvSTATE (coro_sv); |
955 | |
978 | |
956 | if (coro->flags & CF_READY) |
979 | if (coro->flags & CF_READY) |
957 | return 0; |
980 | return 0; |
958 | |
981 | |
959 | #if 0 /* this is actually harmless */ |
|
|
960 | if (coro->flags & CF_RUNNING) |
|
|
961 | croak ("Coro::ready called on currently running coroutine"); |
|
|
962 | #endif |
|
|
963 | |
|
|
964 | coro->flags |= CF_READY; |
982 | coro->flags |= CF_READY; |
965 | |
983 | |
966 | LOCK; |
984 | LOCK; |
967 | coro_enq (SvREFCNT_inc (coro_sv)); |
985 | coro_enq (SvREFCNT_inc (coro_sv)); |
968 | UNLOCK; |
986 | UNLOCK; |
… | |
… | |
971 | } |
989 | } |
972 | |
990 | |
973 | static int |
991 | static int |
974 | api_is_ready (SV *coro_sv) |
992 | api_is_ready (SV *coro_sv) |
975 | { |
993 | { |
976 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
994 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
977 | } |
995 | } |
978 | |
996 | |
979 | static void |
997 | static void |
980 | prepare_schedule (struct transfer_args *ta) |
998 | prepare_schedule (struct transfer_args *ta) |
981 | { |
999 | { |
982 | SV *prev, *next; |
1000 | SV *prev_sv, *next_sv; |
983 | |
1001 | |
984 | for (;;) |
1002 | for (;;) |
985 | { |
1003 | { |
986 | LOCK; |
1004 | LOCK; |
987 | next = coro_deq (PRIO_MIN); |
1005 | next_sv = coro_deq (PRIO_MIN); |
988 | UNLOCK; |
1006 | UNLOCK; |
989 | |
1007 | |
|
|
1008 | /* nothing to schedule: call the idle handler */ |
990 | if (next) |
1009 | if (!next_sv) |
991 | break; |
|
|
992 | |
|
|
993 | { |
1010 | { |
994 | dSP; |
1011 | dSP; |
995 | |
1012 | |
996 | ENTER; |
1013 | ENTER; |
997 | SAVETMPS; |
1014 | SAVETMPS; |
998 | |
1015 | |
999 | PUSHMARK (SP); |
1016 | PUSHMARK (SP); |
1000 | PUTBACK; |
1017 | PUTBACK; |
1001 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1018 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1002 | |
1019 | |
1003 | FREETMPS; |
1020 | FREETMPS; |
1004 | LEAVE; |
1021 | LEAVE; |
|
|
1022 | continue; |
1005 | } |
1023 | } |
1006 | } |
|
|
1007 | |
1024 | |
1008 | prev = SvRV (coro_current); |
1025 | ta->next = SvSTATE (next_sv); |
1009 | SvRV_set (coro_current, next); |
1026 | |
|
|
1027 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1028 | if (ta->next->flags & CF_DESTROYED) |
|
|
1029 | { |
|
|
1030 | SvREFCNT_dec (next_sv); |
|
|
1031 | continue; |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | break; |
|
|
1035 | } |
1010 | |
1036 | |
1011 | /* free this only after the transfer */ |
1037 | /* free this only after the transfer */ |
|
|
1038 | prev_sv = SvRV (coro_current); |
|
|
1039 | SvRV_set (coro_current, next_sv); |
|
|
1040 | ta->prev = SvSTATE (prev_sv); |
|
|
1041 | |
|
|
1042 | assert (ta->next->flags & CF_READY); |
|
|
1043 | ta->next->flags &= ~CF_READY; |
|
|
1044 | |
1012 | LOCK; |
1045 | LOCK; |
1013 | free_coro_mortal (); |
1046 | free_coro_mortal (); |
|
|
1047 | coro_mortal = prev_sv; |
1014 | UNLOCK; |
1048 | UNLOCK; |
1015 | coro_mortal = prev; |
|
|
1016 | |
|
|
1017 | assert (!SvROK(prev));//D |
|
|
1018 | assert (!SvROK(next));//D |
|
|
1019 | |
|
|
1020 | ta->prev = SvSTATE (prev); |
|
|
1021 | ta->next = SvSTATE (next); |
|
|
1022 | |
|
|
1023 | assert (ta->next->flags & CF_READY); |
|
|
1024 | ta->next->flags &= ~CF_READY; |
|
|
1025 | } |
1049 | } |
1026 | |
1050 | |
1027 | static void |
1051 | static void |
1028 | prepare_cede (struct transfer_args *ta) |
1052 | prepare_cede (struct transfer_args *ta) |
1029 | { |
1053 | { |
1030 | api_ready (coro_current); |
1054 | api_ready (coro_current); |
1031 | |
|
|
1032 | prepare_schedule (ta); |
1055 | prepare_schedule (ta); |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | static int |
|
|
1059 | prepare_cede_notself (struct transfer_args *ta) |
|
|
1060 | { |
|
|
1061 | if (coro_nready) |
|
|
1062 | { |
|
|
1063 | SV *prev = SvRV (coro_current); |
|
|
1064 | prepare_schedule (ta); |
|
|
1065 | api_ready (prev); |
|
|
1066 | return 1; |
|
|
1067 | } |
|
|
1068 | else |
|
|
1069 | return 0; |
1033 | } |
1070 | } |
1034 | |
1071 | |
1035 | static void |
1072 | static void |
1036 | api_schedule (void) |
1073 | api_schedule (void) |
1037 | { |
1074 | { |
… | |
… | |
1039 | |
1076 | |
1040 | prepare_schedule (&ta); |
1077 | prepare_schedule (&ta); |
1041 | TRANSFER (ta); |
1078 | TRANSFER (ta); |
1042 | } |
1079 | } |
1043 | |
1080 | |
1044 | static void |
1081 | static int |
1045 | api_cede (void) |
1082 | api_cede (void) |
1046 | { |
1083 | { |
1047 | struct transfer_args ta; |
1084 | struct transfer_args ta; |
1048 | |
1085 | |
1049 | prepare_cede (&ta); |
1086 | prepare_cede (&ta); |
|
|
1087 | |
|
|
1088 | if (ta.prev != ta.next) |
|
|
1089 | { |
1050 | TRANSFER (ta); |
1090 | TRANSFER (ta); |
|
|
1091 | return 1; |
|
|
1092 | } |
|
|
1093 | else |
|
|
1094 | return 0; |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | static int |
|
|
1098 | api_cede_notself (void) |
|
|
1099 | { |
|
|
1100 | struct transfer_args ta; |
|
|
1101 | |
|
|
1102 | if (prepare_cede_notself (&ta)) |
|
|
1103 | { |
|
|
1104 | TRANSFER (ta); |
|
|
1105 | return 1; |
|
|
1106 | } |
|
|
1107 | else |
|
|
1108 | return 0; |
1051 | } |
1109 | } |
1052 | |
1110 | |
1053 | MODULE = Coro::State PACKAGE = Coro::State |
1111 | MODULE = Coro::State PACKAGE = Coro::State |
1054 | |
1112 | |
1055 | PROTOTYPES: DISABLE |
1113 | PROTOTYPES: DISABLE |
… | |
… | |
1111 | _set_stacklevel (...) |
1169 | _set_stacklevel (...) |
1112 | ALIAS: |
1170 | ALIAS: |
1113 | Coro::State::transfer = 1 |
1171 | Coro::State::transfer = 1 |
1114 | Coro::schedule = 2 |
1172 | Coro::schedule = 2 |
1115 | Coro::cede = 3 |
1173 | Coro::cede = 3 |
|
|
1174 | Coro::cede_notself = 4 |
1116 | CODE: |
1175 | CODE: |
1117 | { |
1176 | { |
1118 | struct transfer_args ta; |
1177 | struct transfer_args ta; |
1119 | |
1178 | |
1120 | switch (ix) |
1179 | switch (ix) |
… | |
… | |
1136 | break; |
1195 | break; |
1137 | |
1196 | |
1138 | case 3: |
1197 | case 3: |
1139 | prepare_cede (&ta); |
1198 | prepare_cede (&ta); |
1140 | break; |
1199 | break; |
|
|
1200 | |
|
|
1201 | case 4: |
|
|
1202 | if (!prepare_cede_notself (&ta)) |
|
|
1203 | XSRETURN_EMPTY; |
|
|
1204 | |
|
|
1205 | break; |
1141 | } |
1206 | } |
1142 | |
1207 | |
|
|
1208 | BARRIER; |
1143 | TRANSFER (ta); |
1209 | TRANSFER (ta); |
1144 | } |
|
|
1145 | |
1210 | |
1146 | void |
1211 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
1147 | _clone_state_from (SV *dst, SV *src) |
1212 | XSRETURN_YES; |
|
|
1213 | } |
|
|
1214 | |
|
|
1215 | bool |
|
|
1216 | _destroy (SV *coro_sv) |
1148 | CODE: |
1217 | CODE: |
1149 | { |
1218 | RETVAL = coro_state_destroy (SvSTATE (coro_sv)); |
1150 | struct coro *coro_src = SvSTATE (src); |
1219 | OUTPUT: |
1151 | |
1220 | RETVAL |
1152 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1153 | |
|
|
1154 | ++coro_src->refcnt; |
|
|
1155 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1156 | } |
|
|
1157 | |
1221 | |
1158 | void |
1222 | void |
1159 | _exit (code) |
1223 | _exit (code) |
1160 | int code |
1224 | int code |
1161 | PROTOTYPE: $ |
1225 | PROTOTYPE: $ |
… | |
… | |
1198 | coro_ready[i] = newAV (); |
1262 | coro_ready[i] = newAV (); |
1199 | |
1263 | |
1200 | { |
1264 | { |
1201 | SV *sv = perl_get_sv("Coro::API", 1); |
1265 | SV *sv = perl_get_sv("Coro::API", 1); |
1202 | |
1266 | |
1203 | coroapi.schedule = api_schedule; |
1267 | coroapi.schedule = api_schedule; |
1204 | coroapi.save = api_save; |
1268 | coroapi.save = api_save; |
1205 | coroapi.cede = api_cede; |
1269 | coroapi.cede = api_cede; |
|
|
1270 | coroapi.cede_notself = api_cede_notself; |
1206 | coroapi.ready = api_ready; |
1271 | coroapi.ready = api_ready; |
1207 | coroapi.is_ready = api_is_ready; |
1272 | coroapi.is_ready = api_is_ready; |
1208 | coroapi.nready = &coro_nready; |
1273 | coroapi.nready = &coro_nready; |
1209 | coroapi.current = coro_current; |
1274 | coroapi.current = coro_current; |
1210 | |
1275 | |
1211 | GCoroAPI = &coroapi; |
1276 | GCoroAPI = &coroapi; |
1212 | sv_setiv (sv, (IV)&coroapi); |
1277 | sv_setiv (sv, (IV)&coroapi); |
1213 | SvREADONLY_on (sv); |
1278 | SvREADONLY_on (sv); |
1214 | } |
1279 | } |
… | |
… | |
1230 | RETVAL = coro->prio; |
1295 | RETVAL = coro->prio; |
1231 | |
1296 | |
1232 | if (items > 1) |
1297 | if (items > 1) |
1233 | { |
1298 | { |
1234 | if (ix) |
1299 | if (ix) |
1235 | newprio += coro->prio; |
1300 | newprio = coro->prio - newprio; |
1236 | |
1301 | |
1237 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1302 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1238 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1303 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1239 | |
1304 | |
1240 | coro->prio = newprio; |
1305 | coro->prio = newprio; |
1241 | } |
1306 | } |
1242 | } |
1307 | } |
|
|
1308 | OUTPUT: |
|
|
1309 | RETVAL |
1243 | |
1310 | |
1244 | SV * |
1311 | SV * |
1245 | ready (SV *self) |
1312 | ready (SV *self) |
1246 | PROTOTYPE: $ |
1313 | PROTOTYPE: $ |
1247 | CODE: |
1314 | CODE: |