[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.48 by pcg, Sat Nov 15 03:53:37 2003 UTC

…		…
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 "patchlevel.h"
		6
		7	#if PATCHLEVEL < 6
		8	# ifndef PL_ppaddr
		9	# define PL_ppaddr ppaddr
		10	# endif
		11	# ifndef call_sv
		12	# define call_sv perl_call_sv
		13	# endif
		14	# ifndef get_sv
		15	# define get_sv perl_get_sv
		16	# endif
		17	# ifndef get_cv
		18	# define get_cv perl_get_cv
		19	# endif
		20	# ifndef IS_PADGV
		21	# define IS_PADGV(v) 0
		22	# endif
		23	# ifndef IS_PADCONST
		24	# define IS_PADCONST(v) 0
		25	# endif
		26	#endif
		27
5	#include "libcoro/coro.c"	28	#include "libcoro/coro.c"
		29
		30	#include <signal.h>
6		31
7	#ifdef HAVE_MMAP	32	#ifdef HAVE_MMAP
8	# include <unistd.h>	33	# include <unistd.h>
9	# include <sys/mman.h>	34	# include <sys/mman.h>
		35	# ifndef MAP_ANONYMOUS
		36	# ifdef MAP_ANON
		37	# define MAP_ANONYMOUS MAP_ANON
		38	# else
		39	# undef HAVE_MMAP
		40	# endif
10	#endif	41	# endif
		42	#endif
11		43
12	#define MAY_FLUSH /* increases codesize */	44	#define MAY_FLUSH /* increases codesize and is rarely used */
13
14	/* perl-related */
15	#define TRANSFER_SAVE_DEFAV 0x00000001
16	#define TRANSFER_SAVE_DEFSV 0x00000002
17	#define TRANSFER_SAVE_ERRSV 0x00000004
18	/* c-related */
19	#define TRANSFER_SAVE_CCTXT 0x00000008
20	#ifdef CORO_LAZY_STACK
21	# define TRANSFER_LAZY_STACK 0x00000010
22	#else
23	# define TRANSFER_LAZY_STACK 0x00000000
24	#endif
25
26	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
27	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
28		45
29	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"	47	#define UCORO_STATE "_coro_state"
31		48
32	/* The next macro should delcare a variable stacklevel that contains and approximation	49	/* The next macro should declare a variable stacklevel that contains and approximation
33	* to the current C stack pointer. It's property is that it changes with each call	50	* to the current C stack pointer. Its property is that it changes with each call
34	* and should be unique. */	51	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	52	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		53
		54	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		55
37	#define labs(l) ((l) >= 0 ? (l) : -(l))	56	#define labs(l) ((l) >= 0 ? (l) : -(l))
		57
		58	#include "CoroAPI.h"
		59
		60	static struct CoroAPI coroapi;
38		61
39	/* this is actually not only the c stack but also c registers etc... */	62	/* this is actually not only the c stack but also c registers etc... */
40	typedef struct {	63	typedef struct {
41	int refcnt; /* pointer reference counter */	64	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	65	int usecnt; /* shared by how many coroutines */
46		69
47	void *sptr;	70	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	71	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	72	} coro_stack;
50		73
51	static coro_stack main_stack = { 1, 0, 0 };
52
53	struct coro {	74	struct coro {
		75	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		76	JMPENV start_env;
		77
54	/* the optional C context */	78	/* the optional C context */
55	coro_stack *stack;	79	coro_stack *stack;
56	void *cursp;	80	void *cursp;
57	int gencnt;	81	int gencnt;
58		82
…		…
61	SV *defsv;	85	SV *defsv;
62	SV *errsv;	86	SV *errsv;
63		87
64	/* saved global state not related to stacks */	88	/* saved global state not related to stacks */
65	U8 dowarn;	89	U8 dowarn;
		90	I32 in_eval;
66		91
67	/* the stacks and related info (callchain etc..) */	92	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	93	PERL_SI *curstackinfo;
69	AV *curstack;	94	AV *curstack;
70	AV *mainstack;	95	AV *mainstack;
71	SV **stack_sp;	96	SV **stack_sp;
72	OP *op;	97	OP *op;
73	SV **curpad;	98	SV **curpad;
		99	AV *comppad;
74	SV **stack_base;	100	SV **stack_base;
75	SV **stack_max;	101	SV **stack_max;
76	SV **tmps_stack;	102	SV **tmps_stack;
77	I32 tmps_floor;	103	I32 tmps_floor;
78	I32 tmps_ix;	104	I32 tmps_ix;
…		…
88	I32 savestack_max;	114	I32 savestack_max;
89	OP **retstack;	115	OP **retstack;
90	I32 retstack_ix;	116	I32 retstack_ix;
91	I32 retstack_max;	117	I32 retstack_max;
92	COP *curcop;	118	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	119	JMPENV *top_env;
95		120
96	/* data associated with this coroutine (initial args) */	121	/* data associated with this coroutine (initial args) */
97	AV *args;	122	AV *args;
98	};	123	};
…		…
103	static AV main_mainstack; / used to differentiate between $main and others */	128	static AV main_mainstack; / used to differentiate between $main and others */
104	static HV *coro_state_stash;	129	static HV *coro_state_stash;
105	static SV *ucoro_state_sv;	130	static SV *ucoro_state_sv;
106	static U32 ucoro_state_hash;	131	static U32 ucoro_state_hash;
107	static HV *padlist_cache;	132	static HV *padlist_cache;
		133	static SV coro_mortal; / will be freed after next transfer */
108		134
109	/* mostly copied from op.c:cv_clone2 */	135	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	136	STATIC AV *
111	clone_padlist (AV *protopadlist)	137	clone_padlist (AV *protopadlist)
112	{	138	{
…		…
199		225
200	return newpadlist;	226	return newpadlist;
201	}	227	}
202		228
203	#ifdef MAY_FLUSH	229	#ifdef MAY_FLUSH
204	STATIC AV *	230	STATIC void
205	free_padlist (AV *padlist)	231	free_padlist (AV *padlist)
206	{	232	{
207	/* may be during global destruction */	233	/* may be during global destruction */
208	if (SvREFCNT(padlist))	234	if (SvREFCNT(padlist))
209	{	235	{
…		…
274	#endif	300	#endif
275		301
276	#define SB do {	302	#define SB do {
277	#define SE } while (0)	303	#define SE } while (0)
278		304
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	305	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	306	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		307
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		309
284	static void	310	static void
285	load_state(pTHX_ Coro__State c)	311	load_state(pTHX_ Coro__State c)
286	{	312	{
287	PL_dowarn = c->dowarn;	313	PL_dowarn = c->dowarn;
		314	PL_in_eval = c->in_eval;
288		315
289	PL_curstackinfo = c->curstackinfo;	316	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	317	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	318	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	319	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	320	PL_op = c->op;
294	PL_curpad = c->curpad;	321	PL_curpad = c->curpad;
		322	PL_comppad = c->comppad;
295	PL_stack_base = c->stack_base;	323	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	324	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	325	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	326	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	327	PL_tmps_ix = c->tmps_ix;
…		…
309	PL_savestack_max = c->savestack_max;	337	PL_savestack_max = c->savestack_max;
310	PL_retstack = c->retstack;	338	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	339	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	340	PL_retstack_max = c->retstack_max;
313	PL_curcop = c->curcop;	341	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	342	PL_top_env = c->top_env;
316		343
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
359		386
360	PUSHs (Nullsv);	387	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	388	/* this loop was inspired by pp_caller */
362	for (;;)	389	for (;;)
363	{	390	{
364	do	391	while (cxix >= 0)
365	{	392	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	393	PERL_CONTEXT *cx = &ccstk[cxix--];
367		394
368	if (CxTYPE(cx) == CXt_SUB)	395	if (CxTYPE(cx) == CXt_SUB)
369	{	396	{
…		…
388	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
389		416
390	get_padlist (cv); /* this is a monster */	417	get_padlist (cv); /* this is a monster */
391	}	418	}
392	}	419	}
		420	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	421	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	422	{
395	/* I never used formats, so how should I know how these are implemented? */	423	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	424	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	425	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	426	}
		427	#endif
399	}	428	}
400	while (cxix >= 0);
401		429
402	if (top_si->si_type == PERLSI_MAIN)	430	if (top_si->si_type == PERLSI_MAIN)
403	break;	431	break;
404		432
405	top_si = top_si->si_prev;	433	top_si = top_si->si_prev;
…		…
412		440
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	441	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	442	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	443	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		444
417	/* I have not the slightest idea of why av_reify is necessary */
418	/* but if it's missing the defav contents magically get replaced sometimes */
419	if (c->defav)
420	av_reify (c->defav);
421
422	c->dowarn = PL_dowarn;	445	c->dowarn = PL_dowarn;
		446	c->in_eval = PL_in_eval;
423		447
424	c->curstackinfo = PL_curstackinfo;	448	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	449	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	450	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	451	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	452	c->op = PL_op;
429	c->curpad = PL_curpad;	453	c->curpad = PL_curpad;
		454	c->comppad = PL_comppad;
430	c->stack_base = PL_stack_base;	455	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	456	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	457	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	458	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	459	c->tmps_ix = PL_tmps_ix;
…		…
444	c->savestack_max = PL_savestack_max;	469	c->savestack_max = PL_savestack_max;
445	c->retstack = PL_retstack;	470	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	471	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	472	c->retstack_max = PL_retstack_max;
448	c->curcop = PL_curcop;	473	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	474	c->top_env = PL_top_env;
451	}	475	}
452		476
453	/*	477	/*
454	* allocate various perl stacks. This is an exact copy	478	* allocate various perl stacks. This is an exact copy
…		…
475		499
476	New(54,PL_markstack,16,I32);	500	New(54,PL_markstack,16,I32);
477	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
478	PL_markstack_max = PL_markstack + 16;	502	PL_markstack_max = PL_markstack + 16;
479		503
		504	#ifdef SET_MARK_OFFSET
480	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
		506	#endif
481		507
482	New(54,PL_scopestack,16,I32);	508	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	510	PL_scopestack_max = 16;
485		511
…		…
492	PL_retstack_max = 8;	518	PL_retstack_max = 8;
493	}	519	}
494		520
495	/*	521	/*
496	* destroy the stacks, the callchain etc...	522	* destroy the stacks, the callchain etc...
497	* still there is a memleak of 128 bytes...
498	*/	523	*/
499	STATIC void	524	STATIC void
500	destroy_stacks(pTHX)	525	destroy_stacks(pTHX)
501	{	526	{
		527	if (!IN_DESTRUCT)
		528	{
502	/* is this ugly, I ask? */	529	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	530	while (PL_scopestack_ix)
504	LEAVE;	531	LEAVE;
505		532
506	/* sure it is, but more important: is it correct?? :/ */	533	/* sure it is, but more important: is it correct?? :/ */
507	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */	534	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
508	FREETMPS;	535	FREETMPS;
		536	}
509		537
510	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
512		540
513	while (PL_curstackinfo)	541	while (PL_curstackinfo)
…		…
518	dSP;	546	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	547	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	548	PUTBACK; /* possibly superfluous */
521	}	549	}
522		550
		551	if (!IN_DESTRUCT)
		552	{
523	dounwind(-1);	553	dounwind(-1);
524
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	554	SvREFCNT_dec(PL_curstackinfo->si_stack);
		555	}
		556
526	Safefree(PL_curstackinfo->si_cxstack);	557	Safefree(PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	558	Safefree(PL_curstackinfo);
528	PL_curstackinfo = p;	559	PL_curstackinfo = p;
529	}	560	}
530		561
…		…
545	stack->refcnt = 1;	576	stack->refcnt = 1;
546	stack->usecnt = 1;	577	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	578	stack->gencnt = ctx->gencnt = 0;
548	if (alloc)	579	if (alloc)
549	{	580	{
550	#ifdef HAVE_MMAP	581	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	582	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	583	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	584	if (stack->sptr == (void *)-1)
554	#endif	585	#endif
555	{	586	{
556	/FIXME//D//* reasonable stack size! */	587	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);	588	stack->ssize = -4096 * sizeof (long);
…		…
577	{	608	{
578	#ifdef HAVE_MMAP	609	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)	610	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);	611	munmap (stack->sptr, stack->ssize);
581	else	612	else
582	#else	613	#endif
583	Safefree (stack->sptr);	614	Safefree (stack->sptr);
584	#endif	615
585	Safefree (stack);	616	Safefree (stack);
586	}	617	}
587	else if (ctx->gencnt == stack->gencnt)	618	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;	619	--stack->usecnt;
589	}	620	}
…		…
598	dSP;	629	dSP;
599	Coro__State ctx = (Coro__State)arg;	630	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	631	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
601		632
602	coro_init_stacks (aTHX);	633	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;	634	/PL_curcop = 0;/
		635	/PL_in_eval = PL_in_eval;/ /* inherit */
		636	SvREFCNT_dec (GvAV (PL_defgv));
		637	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		638
604	SPAGAIN;	639	SPAGAIN;
605
606	/PL_curcop = 0;/
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;
609		640
610	if (ctx->stack)	641	if (ctx->stack)
611	{	642	{
612	ctx->cursp = 0;	643	ctx->cursp = 0;
613		644
614	PUSHMARK(SP);	645	PUSHMARK(SP);
615	PUTBACK;	646	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	647	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		648
		649	if (SvTRUE (ERRSV))
		650	croak (NULL);
		651	else
617	croak ("FATAL: CCTXT coroutine returned!");	652	croak ("FATAL: CCTXT coroutine returned!");
618	}	653	}
619	else	654	else
620	{	655	{
621	UNOP myop;	656	UNOP myop;
622		657
…		…
634	* that doesn't matter, though, since it is only	669	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...	670	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)	671	* ah yes, and I don't care anyways ;)
637	*/	672	*/
638	PUTBACK;	673	PUTBACK;
639	PL_op = pp_entersub();	674	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	675	SPAGAIN;
641		676
642	ENTER; /* necessary e.g. for dounwind */	677	ENTER; /* necessary e.g. for dounwind */
643	}	678	}
644	}	679	}
…		…
648	{	683	{
649	/*	684	/*
650	* this is a _very_ stripped down perl interpreter ;)	685	* this is a _very_ stripped down perl interpreter ;)
651	*/	686	*/
652	Coro__State ctx = (Coro__State)arg;	687	Coro__State ctx = (Coro__State)arg;
		688	JMPENV coro_start_env;
		689
		690	PL_top_env = &ctx->start_env;
653		691
654	ctx->cursp = 0;	692	ctx->cursp = 0;
655	PL_op = PL_op->op_next;	693	PL_op = PL_op->op_next;
656	CALLRUNOPS(aTHX);	694	CALLRUNOPS(aTHX);
657	/NORETURN/	695
658	abort ();	696	abort ();
659	}	697	}
660		698
661	STATIC void	699	STATIC void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	700	transfer(pTHX_ struct coro prev, struct coro next, int flags)
663	{	701	{
664	dSP;
665	dSTACKLEVEL;	702	dSTACKLEVEL;
		703	static struct coro *xnext;
666		704
667	if (prev != next)	705	if (prev != next)
668	{	706	{
		707	xnext = next;
		708
669	if (next->mainstack)	709	if (next->mainstack)
670	{	710	{
671	SAVE (prev, flags);	711	SAVE (prev, flags);
672	LOAD (next);	712	LOAD (next);
673		713
…		…
696	continue_coro, (void *)next,	736	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));	737	next->stack->sptr, labs (next->stack->ssize));
698	}	738	}
699		739
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	740	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		741	/* don't add any code here */
701	}	742	}
702		743
703	}	744	}
704	else if (next->tmps_ix == -2)	745	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	746	croak ("tried to transfer to running coroutine");
…		…
712	if (!prev->stack)	753	if (!prev->stack)
713	allocate_stack (prev, 0);	754	allocate_stack (prev, 0);
714		755
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	756	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
716	{	757	{
		758	PL_top_env = &next->start_env;
		759
717	setup_coro (next);	760	setup_coro (next);
718		761
719	prev->stack->refcnt++;	762	prev->stack->refcnt++;
720	prev->stack->usecnt++;	763	prev->stack->usecnt++;
721	next->stack = prev->stack;	764	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;	765	next->gencnt = prev->gencnt;
723	}	766	}
724	else	767	else
725	{	768	{
		769	assert (!next->stack);
726	allocate_stack (next, 1);	770	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	771	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	772	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	773	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	774	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		775	/* don't add any code here */
731	}	776	}
732	}	777	}
733	else	778	else
734	setup_coro (next);	779	setup_coro (next);
735	}	780	}
		781
		782	/*
		783	* xnext is now either prev or next, depending on wether
		784	* we switched the c stack or not. that's why I use a global
		785	* variable, that should become thread-specific at one point.
		786	*/
		787	xnext->cursp = stacklevel;
736	}	788	}
737		789
738	next->cursp = stacklevel;	790	if (coro_mortal)
		791	{
		792	SvREFCNT_dec (coro_mortal);
		793	coro_mortal = 0;
		794	}
		795	}
		796
		797	#define SV_CORO(sv,func) \
		798	do { \
		799	if (SvROK (sv)) \
		800	sv = SvRV (sv); \
		801	\
		802	if (SvTYPE(sv) == SVt_PVHV) \
		803	{ \
		804	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		805	\
		806	if (!he) \
		807	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		808	\
		809	(sv) = SvRV (HeVAL(he)); \
		810	} \
		811	\
		812	/* must also be changed inside Coro::Cont::yield */ \
		813	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
		814	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		815	\
		816	} while(0)
		817
		818	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		819
		820	static void
		821	api_transfer(pTHX_ SV prev, SV next, int flags)
		822	{
		823	SV_CORO (prev, "Coro::transfer");
		824	SV_CORO (next, "Coro::transfer");
		825
		826	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
		827	}
		828
		829	/ Coro ******************************************************************/
		830
		831	#define PRIO_MAX 3
		832	#define PRIO_HIGH 1
		833	#define PRIO_NORMAL 0
		834	#define PRIO_LOW -1
		835	#define PRIO_IDLE -3
		836	#define PRIO_MIN -4
		837
		838	/* for Coro.pm */
		839	static GV coro_current, coro_idle;
		840	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		841	static int coro_nready;
		842
		843	static void
		844	coro_enq (SV *sv)
		845	{
		846	if (SvTYPE (sv) == SVt_PVHV)
		847	{
		848	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		849	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		850
		851	prio = prio > PRIO_MAX ? PRIO_MAX
		852	: prio < PRIO_MIN ? PRIO_MIN
		853	: prio;
		854
		855	av_push (coro_ready [prio - PRIO_MIN], sv);
		856	coro_nready++;
		857
		858	return;
		859	}
		860
		861	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		862	}
		863
		864	static SV *
		865	coro_deq (int min_prio)
		866	{
		867	int prio = PRIO_MAX - PRIO_MIN;
		868
		869	min_prio -= PRIO_MIN;
		870	if (min_prio < 0)
		871	min_prio = 0;
		872
		873	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		874	if (av_len (coro_ready[prio]) >= 0)
		875	{
		876	coro_nready--;
		877	return av_shift (coro_ready[prio]);
		878	}
		879
		880	return 0;
		881	}
		882
		883	static void
		884	api_ready (SV *coro)
		885	{
		886	if (SvROK (coro))
		887	coro = SvRV (coro);
		888
		889	coro_enq (SvREFCNT_inc (coro));
		890	}
		891
		892	static void
		893	api_schedule (void)
		894	{
		895	SV prev, next;
		896
		897	prev = SvRV (GvSV (coro_current));
		898	next = coro_deq (PRIO_MIN);
		899
		900	if (!next)
		901	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		902
		903	/* free this only after the transfer */
		904	coro_mortal = prev;
		905	SV_CORO (prev, "Coro::schedule");
		906
		907	SvRV (GvSV (coro_current)) = next;
		908
		909	SV_CORO (next, "Coro::schedule");
		910
		911	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		912	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		913	}
		914
		915	static void
		916	api_cede (void)
		917	{
		918	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		919
		920	api_schedule ();
739	}	921	}
740		922
741	MODULE = Coro::State PACKAGE = Coro::State	923	MODULE = Coro::State PACKAGE = Coro::State
742		924
743	PROTOTYPES: ENABLE	925	PROTOTYPES: ENABLE
…		…
755		937
756	if (!padlist_cache)	938	if (!padlist_cache)
757	padlist_cache = newHV ();	939	padlist_cache = newHV ();
758		940
759	main_mainstack = PL_mainstack;	941	main_mainstack = PL_mainstack;
		942
		943	coroapi.ver = CORO_API_VERSION;
		944	coroapi.transfer = api_transfer;
760	}	945	}
761		946
762	Coro::State	947	Coro::State
763	_newprocess(args)	948	_newprocess(args)
764	SV * args	949	SV * args
…		…
767	Coro__State coro;	952	Coro__State coro;
768		953
769	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	954	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
770	croak ("Coro::State::_newprocess expects an arrayref");	955	croak ("Coro::State::_newprocess expects an arrayref");
771		956
772	New (0, coro, 1, struct coro);	957	Newz (0, coro, 1, struct coro);
773		958
774	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	959	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
775	coro->mainstack = 0; /* actual work is done inside transfer */	960	coro->mainstack = 0; /* actual work is done inside transfer */
776	coro->stack = 0;	961	coro->stack = 0;
777		962
		963	/* same as JMPENV_BOOTSTRAP */
		964	/* we might be able to recycle start_env, but safe is safe */
		965	//Zero(&coro->start_env, 1, JMPENV);
		966	coro->start_env.je_ret = -1;
		967	coro->start_env.je_mustcatch = TRUE;
		968
778	RETVAL = coro;	969	RETVAL = coro;
779	OUTPUT:	970	OUTPUT:
780	RETVAL	971	RETVAL
781		972
782	void	973	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	974	transfer(prev, next, flags)
784	Coro::State_or_hashref prev	975	SV *prev
785	Coro::State_or_hashref next	976	SV *next
786	int flags	977	int flags
787	PROTOTYPE: @	978	PROTOTYPE: @
788	CODE:	979	CODE:
		980	PUTBACK;
		981	SV_CORO (next, "Coro::transfer");
		982	SV_CORO (prev, "Coro::transfer");
789	transfer (aTHX_ prev, next, flags);	983	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		984	SPAGAIN;
790		985
791	void	986	void
792	DESTROY(coro)	987	DESTROY(coro)
793	Coro::State coro	988	Coro::State coro
794	CODE:	989	CODE:
795		990
796	if (coro->mainstack && coro->mainstack != main_mainstack)	991	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{	992	{
798	struct coro temp;	993	struct coro temp;
799		994
		995	PUTBACK;
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	996	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);	997	LOAD(aTHX_ coro);
		998	SPAGAIN;
802		999
803	destroy_stacks (aTHX);	1000	destroy_stacks (aTHX);
804		1001
805	LOAD((&temp)); /* this will get rid of defsv etc.. */	1002	LOAD((&temp)); /* this will get rid of defsv etc.. */
		1003	SPAGAIN;
806		1004
807	coro->mainstack = 0;	1005	coro->mainstack = 0;
808	}	1006	}
809		1007
810	deallocate_stack (coro);	1008	deallocate_stack (coro);
811		1009	SvREFCNT_dec (coro->args);
812	Safefree (coro);	1010	Safefree (coro);
813		1011
814	void	1012	void
815	flush()	1013	flush()
816	CODE:	1014	CODE:
817	#ifdef MAY_FLUSH	1015	#ifdef MAY_FLUSH
818	flush_padlist_cache ();	1016	flush_padlist_cache ();
819	#endif	1017	#endif
820		1018
		1019	void
		1020	_exit(code)
		1021	int code
		1022	PROTOTYPE: $
		1023	CODE:
		1024	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
		1025	_exit (code);
		1026	#else
		1027	signal (SIGTERM, SIG_DFL);
		1028	raise (SIGTERM);
		1029	exit (code);
		1030	#endif
		1031
821	MODULE = Coro::State PACKAGE = Coro::Cont	1032	MODULE = Coro::State PACKAGE = Coro::Cont
822		1033
823	# this is slightly dirty	1034	# this is slightly dirty (should expose a c-level api)
824		1035
825	void	1036	void
826	yield(...)	1037	yield(...)
827	PROTOTYPE: @	1038	PROTOTYPE: @
828	CODE:	1039	CODE:
…		…
830	SV *sv;	1041	SV *sv;
831	AV *defav = GvAV (PL_defgv);	1042	AV *defav = GvAV (PL_defgv);
832	struct coro prev, next;	1043	struct coro prev, next;
833		1044
834	if (!returnstk)	1045	if (!returnstk)
835	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1046	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
836		1047
837	/* set up @_ -- ugly */	1048	/* set up @_ -- ugly */
838	av_clear (defav);	1049	av_clear (defav);
839	av_fill (defav, items - 1);	1050	av_fill (defav, items - 1);
840	while (items--)	1051	while (items--)
…		…
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1057	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
847	SvREFCNT_dec (sv);	1058	SvREFCNT_dec (sv);
848		1059
849	transfer(aTHX_ prev, next, 0);	1060	transfer(aTHX_ prev, next, 0);
850		1061
		1062	MODULE = Coro::State PACKAGE = Coro
		1063
		1064	# this is slightly dirty (should expose a c-level api)
		1065
		1066	BOOT:
		1067	{
		1068	int i;
		1069	HV *stash = gv_stashpv ("Coro", TRUE);
		1070
		1071	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1072	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1073	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1074	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1075	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1076	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1077
		1078	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1079	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1080
		1081	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1082	coro_ready[i] = newAV ();
		1083
		1084	{
		1085	SV *sv = perl_get_sv("Coro::API", 1);
		1086
		1087	coroapi.schedule = api_schedule;
		1088	coroapi.cede = api_cede;
		1089	coroapi.ready = api_ready;
		1090	coroapi.nready = &coro_nready;
		1091	coroapi.current = coro_current;
		1092
		1093	GCoroAPI = &coroapi;
		1094	sv_setiv(sv, (IV)&coroapi);
		1095	SvREADONLY_on(sv);
		1096	}
		1097	}
		1098
		1099	void
		1100	ready(self)
		1101	SV * self
		1102	PROTOTYPE: $
		1103	CODE:
		1104	api_ready (self);
		1105
		1106	int
		1107	nready(...)
		1108	PROTOTYPE:
		1109	CODE:
		1110	RETVAL = coro_nready;
		1111	OUTPUT:
		1112	RETVAL
		1113
		1114	void
		1115	schedule(...)
		1116	PROTOTYPE:
		1117	CODE:
		1118	api_schedule ();
		1119
		1120	void
		1121	cede(...)
		1122	PROTOTYPE:
		1123	CODE:
		1124	api_cede ();
		1125

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Comparing Coro/Coro/State.xs (file contents): Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs. Revision 1.48 by pcg, Sat Nov 15 03:53:37 2003 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.48 by pcg, Sat Nov 15 03:53:37 2003 UTC