[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 1.44 by root, Sat Mar 22 18:50:32 2003 UTC

…		…
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"
6		6
		7	#include <signal.h>
		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>
		12	# ifndef MAP_ANONYMOUS
		13	# ifdef MAP_ANON
		14	# define MAP_ANONYMOUS MAP_ANON
		15	# else
		16	# undef HAVE_MMAP
		17	# endif
		18	# endif
10	#endif	19	#endif
11		20
12	#define MAY_FLUSH /* increases codesize */	21	#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		22
29	#define SUB_INIT "Coro::State::initialize"	23	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"	24	#define UCORO_STATE "_coro_state"
31		25
32	/* 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
33	* 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
34	* and should be unique. */	28	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	29	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		30
		31	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		32
37	#define labs(l) ((l) >= 0 ? (l) : -(l))	33	#define labs(l) ((l) >= 0 ? (l) : -(l))
		34
		35	#include "CoroAPI.h"
		36
		37	static struct CoroAPI coroapi;
38		38
39	/* this is actually not only the c stack but also c registers etc... */	39	/* this is actually not only the c stack but also c registers etc... */
40	typedef struct {	40	typedef struct {
41	int refcnt; /* pointer reference counter */	41	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	42	int usecnt; /* shared by how many coroutines */
…		…
45	coro_context cctx;	45	coro_context cctx;
46		46
47	void *sptr;	47	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	48	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	49	} coro_stack;
50
51	static coro_stack main_stack = { 1, 0, 0 };
52		50
53	struct coro {	51	struct coro {
54	/* the optional C context */	52	/* the optional C context */
55	coro_stack *stack;	53	coro_stack *stack;
56	void *cursp;	54	void *cursp;
…		…
61	SV *defsv;	59	SV *defsv;
62	SV *errsv;	60	SV *errsv;
63		61
64	/* saved global state not related to stacks */	62	/* saved global state not related to stacks */
65	U8 dowarn;	63	U8 dowarn;
		64	I32 in_eval;
66		65
67	/* the stacks and related info (callchain etc..) */	66	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	67	PERL_SI *curstackinfo;
69	AV *curstack;	68	AV *curstack;
70	AV *mainstack;	69	AV *mainstack;
71	SV **stack_sp;	70	SV **stack_sp;
72	OP *op;	71	OP *op;
73	SV **curpad;	72	SV **curpad;
		73	AV *comppad;
74	SV **stack_base;	74	SV **stack_base;
75	SV **stack_max;	75	SV **stack_max;
76	SV **tmps_stack;	76	SV **tmps_stack;
77	I32 tmps_floor;	77	I32 tmps_floor;
78	I32 tmps_ix;	78	I32 tmps_ix;
…		…
88	I32 savestack_max;	88	I32 savestack_max;
89	OP **retstack;	89	OP **retstack;
90	I32 retstack_ix;	90	I32 retstack_ix;
91	I32 retstack_max;	91	I32 retstack_max;
92	COP *curcop;	92	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	93	JMPENV *top_env;
95		94
96	/* data associated with this coroutine (initial args) */	95	/* data associated with this coroutine (initial args) */
97	AV *args;	96	AV *args;
98	};	97	};
…		…
103	static AV main_mainstack; / used to differentiate between $main and others */	102	static AV main_mainstack; / used to differentiate between $main and others */
104	static HV *coro_state_stash;	103	static HV *coro_state_stash;
105	static SV *ucoro_state_sv;	104	static SV *ucoro_state_sv;
106	static U32 ucoro_state_hash;	105	static U32 ucoro_state_hash;
107	static HV *padlist_cache;	106	static HV *padlist_cache;
		107	static SV coro_mortal; / will be freed after next transfer */
108		108
109	/* mostly copied from op.c:cv_clone2 */	109	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	110	STATIC AV *
111	clone_padlist (AV *protopadlist)	111	clone_padlist (AV *protopadlist)
112	{	112	{
…		…
199		199
200	return newpadlist;	200	return newpadlist;
201	}	201	}
202		202
203	#ifdef MAY_FLUSH	203	#ifdef MAY_FLUSH
204	STATIC AV *	204	STATIC void
205	free_padlist (AV *padlist)	205	free_padlist (AV *padlist)
206	{	206	{
207	/* may be during global destruction */	207	/* may be during global destruction */
208	if (SvREFCNT(padlist))	208	if (SvREFCNT(padlist))
209	{	209	{
…		…
274	#endif	274	#endif
275		275
276	#define SB do {	276	#define SB do {
277	#define SE } while (0)	277	#define SE } while (0)
278		278
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	279	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	280	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		281
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
283		283
284	static void	284	static void
285	load_state(pTHX_ Coro__State c)	285	load_state(pTHX_ Coro__State c)
286	{	286	{
287	PL_dowarn = c->dowarn;	287	PL_dowarn = c->dowarn;
		288	PL_in_eval = c->in_eval;
288		289
289	PL_curstackinfo = c->curstackinfo;	290	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	291	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	292	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	293	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	294	PL_op = c->op;
294	PL_curpad = c->curpad;	295	PL_curpad = c->curpad;
		296	PL_comppad = c->comppad;
295	PL_stack_base = c->stack_base;	297	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	298	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	299	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	300	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	301	PL_tmps_ix = c->tmps_ix;
…		…
309	PL_savestack_max = c->savestack_max;	311	PL_savestack_max = c->savestack_max;
310	PL_retstack = c->retstack;	312	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	313	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	314	PL_retstack_max = c->retstack_max;
313	PL_curcop = c->curcop;	315	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	316	PL_top_env = c->top_env;
316		317
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
359		360
360	PUSHs (Nullsv);	361	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
362	for (;;)	363	for (;;)
363	{	364	{
364	do	365	while (cxix >= 0)
365	{	366	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
367		368
368	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE(cx) == CXt_SUB)
369	{	370	{
…		…
395	/* I never used formats, so how should I know how these are implemented? */	396	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	397	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	398	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	399	}
399	}	400	}
400	while (cxix >= 0);
401		401
402	if (top_si->si_type == PERLSI_MAIN)	402	if (top_si->si_type == PERLSI_MAIN)
403	break;	403	break;
404		404
405	top_si = top_si->si_prev;	405	top_si = top_si->si_prev;
…		…
412		412
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		416
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;	417	c->dowarn = PL_dowarn;
		418	c->in_eval = PL_in_eval;
423		419
424	c->curstackinfo = PL_curstackinfo;	420	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	421	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	422	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	423	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	424	c->op = PL_op;
429	c->curpad = PL_curpad;	425	c->curpad = PL_curpad;
		426	c->comppad = PL_comppad;
430	c->stack_base = PL_stack_base;	427	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	428	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	429	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	430	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	431	c->tmps_ix = PL_tmps_ix;
…		…
444	c->savestack_max = PL_savestack_max;	441	c->savestack_max = PL_savestack_max;
445	c->retstack = PL_retstack;	442	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	443	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	444	c->retstack_max = PL_retstack_max;
448	c->curcop = PL_curcop;	445	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	446	c->top_env = PL_top_env;
451	}	447	}
452		448
453	/*	449	/*
454	* allocate various perl stacks. This is an exact copy	450	* allocate various perl stacks. This is an exact copy
…		…
497	* still there is a memleak of 128 bytes...	493	* still there is a memleak of 128 bytes...
498	*/	494	*/
499	STATIC void	495	STATIC void
500	destroy_stacks(pTHX)	496	destroy_stacks(pTHX)
501	{	497	{
		498	if (!IN_DESTRUCT)
		499	{
502	/* is this ugly, I ask? */	500	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	501	while (PL_scopestack_ix)
504	LEAVE;	502	LEAVE;
505		503
506	/* sure it is, but more important: is it correct?? :/ */	504	/* sure it is, but more important: is it correct?? :/ */
507	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */	505	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
508	FREETMPS;	506	FREETMPS;
		507	}
509		508
510	while (PL_curstackinfo->si_next)	509	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	510	PL_curstackinfo = PL_curstackinfo->si_next;
512		511
513	while (PL_curstackinfo)	512	while (PL_curstackinfo)
…		…
518	dSP;	517	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	519	PUTBACK; /* possibly superfluous */
521	}	520	}
522		521
		522	if (!IN_DESTRUCT)
		523	{
523	dounwind(-1);	524	dounwind(-1);
524
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	525	SvREFCNT_dec(PL_curstackinfo->si_stack);
		526	}
		527
526	Safefree(PL_curstackinfo->si_cxstack);	528	Safefree(PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	529	Safefree(PL_curstackinfo);
528	PL_curstackinfo = p;	530	PL_curstackinfo = p;
529	}	531	}
530		532
…		…
545	stack->refcnt = 1;	547	stack->refcnt = 1;
546	stack->usecnt = 1;	548	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	549	stack->gencnt = ctx->gencnt = 0;
548	if (alloc)	550	if (alloc)
549	{	551	{
550	#ifdef HAVE_MMAP	552	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	553	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);	554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	555	if (stack->sptr == (void *)-1)
554	#endif	556	#endif
555	{	557	{
556	/FIXME//D//* reasonable stack size! */	558	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);	559	stack->ssize = -4096 * sizeof (long);
…		…
598	dSP;	600	dSP;
599	Coro__State ctx = (Coro__State)arg;	601	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	602	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
601		603
602	coro_init_stacks (aTHX);	604	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;
604	SPAGAIN;
605
606	/PL_curcop = 0;/	605	/PL_curcop = 0;/
		606	/PL_in_eval = PL_in_eval;/ /* inherit */
607	SvREFCNT_dec (GvAV (PL_defgv));	607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;	608	GvAV (PL_defgv) = ctx->args;
609		609
		610	SPAGAIN;
		611
610	if (ctx->stack)	612	if (ctx->stack)
611	{	613	{
612	ctx->cursp = 0;	614	ctx->cursp = 0;
613		615
614	PUSHMARK(SP);	616	PUSHMARK(SP);
615	PUTBACK;	617	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	618	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		619
		620	if (SvTRUE (ERRSV))
		621	croak (NULL);
		622	else
617	croak ("FATAL: CCTXT coroutine returned!");	623	croak ("FATAL: CCTXT coroutine returned!");
618	}	624	}
619	else	625	else
620	{	626	{
621	UNOP myop;	627	UNOP myop;
622		628
…		…
634	* that doesn't matter, though, since it is only	640	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...	641	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)	642	* ah yes, and I don't care anyways ;)
637	*/	643	*/
638	PUTBACK;	644	PUTBACK;
639	PL_op = pp_entersub();	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	646	SPAGAIN;
641		647
642	ENTER; /* necessary e.g. for dounwind */	648	ENTER; /* necessary e.g. for dounwind */
643	}	649	}
644	}	650	}
…		…
648	{	654	{
649	/*	655	/*
650	* this is a _very_ stripped down perl interpreter ;)	656	* this is a _very_ stripped down perl interpreter ;)
651	*/	657	*/
652	Coro__State ctx = (Coro__State)arg;	658	Coro__State ctx = (Coro__State)arg;
		659	JMPENV coro_start_env;
		660
		661	/* same as JMPENV_BOOTSTRAP */
		662	Zero(&coro_start_env, 1, JMPENV);
		663	coro_start_env.je_ret = -1;
		664	coro_start_env.je_mustcatch = TRUE;
		665	PL_top_env = &coro_start_env;
653		666
654	ctx->cursp = 0;	667	ctx->cursp = 0;
655	PL_op = PL_op->op_next;	668	PL_op = PL_op->op_next;
656	CALLRUNOPS(aTHX);	669	CALLRUNOPS(aTHX);
657	/NORETURN/	670
658	abort ();	671	abort ();
659	}	672	}
660		673
661	STATIC void	674	STATIC void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	675	transfer(pTHX_ struct coro prev, struct coro next, int flags)
663	{	676	{
664	dSP;
665	dSTACKLEVEL;	677	dSTACKLEVEL;
		678	static struct coro *xnext;
666		679
667	if (prev != next)	680	if (prev != next)
668	{	681	{
		682	xnext = next;
		683
669	if (next->mainstack)	684	if (next->mainstack)
670	{	685	{
671	SAVE (prev, flags);	686	SAVE (prev, flags);
672	LOAD (next);	687	LOAD (next);
673		688
…		…
696	continue_coro, (void *)next,	711	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));	712	next->stack->sptr, labs (next->stack->ssize));
698	}	713	}
699		714
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		716	/* don't add any code here */
701	}	717	}
702		718
703	}	719	}
704	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
…		…
726	allocate_stack (next, 1);	742	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	743	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	744	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	745	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	746	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		747	/* don't add any code here */
731	}	748	}
732	}	749	}
733	else	750	else
734	setup_coro (next);	751	setup_coro (next);
735	}	752	}
736	}
737		753
		754	/*
		755	* xnext is now either prev or next, depending on wether
		756	* we switched the c stack or not. that's why I use a global
		757	* variable, that should become thread-specific at one point.
		758	*/
738	next->cursp = stacklevel;	759	xnext->cursp = stacklevel;
		760	}
		761
		762	if (coro_mortal)
		763	{
		764	SvREFCNT_dec (coro_mortal);
		765	coro_mortal = 0;
		766	}
		767	}
		768
		769	#define SV_CORO(sv,func) \
		770	do { \
		771	if (SvROK (sv)) \
		772	sv = SvRV (sv); \
		773	\
		774	if (SvTYPE(sv) == SVt_PVHV) \
		775	{ \
		776	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		777	\
		778	if (!he) \
		779	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		780	\
		781	(sv) = SvRV (HeVAL(he)); \
		782	} \
		783	\
		784	/* must also be changed inside Coro::Cont::yield */ \
		785	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
		786	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		787	\
		788	} while(0)
		789
		790	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		791
		792	static void
		793	api_transfer(pTHX_ SV prev, SV next, int flags)
		794	{
		795	SV_CORO (prev, "Coro::transfer");
		796	SV_CORO (next, "Coro::transfer");
		797
		798	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
		799	}
		800
		801	/ Coro ******************************************************************/
		802
		803	#define PRIO_MAX 3
		804	#define PRIO_HIGH 1
		805	#define PRIO_NORMAL 0
		806	#define PRIO_LOW -1
		807	#define PRIO_IDLE -3
		808	#define PRIO_MIN -4
		809
		810	/* for Coro.pm */
		811	static GV coro_current, coro_idle;
		812	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		813	static int coro_nready;
		814
		815	static void
		816	coro_enq (SV *sv)
		817	{
		818	if (SvTYPE (sv) == SVt_PVHV)
		819	{
		820	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		821	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		822
		823	prio = prio > PRIO_MAX ? PRIO_MAX
		824	: prio < PRIO_MIN ? PRIO_MIN
		825	: prio;
		826
		827	av_push (coro_ready [prio - PRIO_MIN], sv);
		828	coro_nready++;
		829
		830	return;
		831	}
		832
		833	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		834	}
		835
		836	static SV *
		837	coro_deq (int min_prio)
		838	{
		839	int prio = PRIO_MAX - PRIO_MIN;
		840
		841	min_prio -= PRIO_MIN;
		842	if (min_prio < 0)
		843	min_prio = 0;
		844
		845	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		846	if (av_len (coro_ready[prio]) >= 0)
		847	{
		848	coro_nready--;
		849	return av_shift (coro_ready[prio]);
		850	}
		851
		852	return 0;
		853	}
		854
		855	static void
		856	api_ready (SV *coro)
		857	{
		858	if (SvROK (coro))
		859	coro = SvRV (coro);
		860
		861	coro_enq (SvREFCNT_inc (coro));
		862	}
		863
		864	static void
		865	api_schedule (void)
		866	{
		867	SV prev, next;
		868
		869	prev = SvRV (GvSV (coro_current));
		870	next = coro_deq (PRIO_MIN);
		871
		872	if (!next)
		873	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		874
		875	/* free this only after the transfer */
		876	coro_mortal = prev;
		877	SV_CORO (prev, "Coro::schedule");
		878
		879	SvRV (GvSV (coro_current)) = next;
		880
		881	SV_CORO (next, "Coro::schedule");
		882
		883	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		884	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		885	}
		886
		887	static void
		888	api_cede (void)
		889	{
		890	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		891
		892	api_schedule ();
739	}	893	}
740		894
741	MODULE = Coro::State PACKAGE = Coro::State	895	MODULE = Coro::State PACKAGE = Coro::State
742		896
743	PROTOTYPES: ENABLE	897	PROTOTYPES: ENABLE
…		…
755		909
756	if (!padlist_cache)	910	if (!padlist_cache)
757	padlist_cache = newHV ();	911	padlist_cache = newHV ();
758		912
759	main_mainstack = PL_mainstack;	913	main_mainstack = PL_mainstack;
		914
		915	coroapi.ver = CORO_API_VERSION;
		916	coroapi.transfer = api_transfer;
760	}	917	}
761		918
762	Coro::State	919	Coro::State
763	_newprocess(args)	920	_newprocess(args)
764	SV * args	921	SV * args
…		…
778	RETVAL = coro;	935	RETVAL = coro;
779	OUTPUT:	936	OUTPUT:
780	RETVAL	937	RETVAL
781		938
782	void	939	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	940	transfer(prev, next, flags)
784	Coro::State_or_hashref prev	941	SV *prev
785	Coro::State_or_hashref next	942	SV *next
786	int flags	943	int flags
787	PROTOTYPE: @	944	PROTOTYPE: @
788	CODE:	945	CODE:
		946	PUTBACK;
		947	SV_CORO (next, "Coro::transfer");
		948	SV_CORO (prev, "Coro::transfer");
789	transfer (aTHX_ prev, next, flags);	949	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		950	SPAGAIN;
790		951
791	void	952	void
792	DESTROY(coro)	953	DESTROY(coro)
793	Coro::State coro	954	Coro::State coro
794	CODE:	955	CODE:
795		956
796	if (coro->mainstack && coro->mainstack != main_mainstack)	957	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{	958	{
798	struct coro temp;	959	struct coro temp;
799		960
		961	PUTBACK;
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	962	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);	963	LOAD(aTHX_ coro);
		964	SPAGAIN;
802		965
803	destroy_stacks (aTHX);	966	destroy_stacks (aTHX);
804		967
805	LOAD((&temp)); /* this will get rid of defsv etc.. */	968	LOAD((&temp)); /* this will get rid of defsv etc.. */
		969	SPAGAIN;
806		970
807	coro->mainstack = 0;	971	coro->mainstack = 0;
808	}	972	}
809		973
810	deallocate_stack (coro);	974	deallocate_stack (coro);
…		…
816	CODE:	980	CODE:
817	#ifdef MAY_FLUSH	981	#ifdef MAY_FLUSH
818	flush_padlist_cache ();	982	flush_padlist_cache ();
819	#endif	983	#endif
820		984
		985	void
		986	_exit(code)
		987	int code
		988	PROTOTYPE: $
		989	CODE:
		990	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
		991	_exit (code);
		992	#else
		993	signal (SIGTERM, SIG_DFL);
		994	raise (SIGTERM);
		995	exit (code);
		996	#endif
		997
821	MODULE = Coro::State PACKAGE = Coro::Cont	998	MODULE = Coro::State PACKAGE = Coro::Cont
822		999
823	# this is slightly dirty	1000	# this is slightly dirty (should expose a c-level api)
824		1001
825	void	1002	void
826	yield(...)	1003	yield(...)
827	PROTOTYPE: @	1004	PROTOTYPE: @
828	CODE:	1005	CODE:
…		…
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1023	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
847	SvREFCNT_dec (sv);	1024	SvREFCNT_dec (sv);
848		1025
849	transfer(aTHX_ prev, next, 0);	1026	transfer(aTHX_ prev, next, 0);
850		1027
		1028	MODULE = Coro::State PACKAGE = Coro
		1029
		1030	# this is slightly dirty (should expose a c-level api)
		1031
		1032	BOOT:
		1033	{
		1034	int i;
		1035	HV *stash = gv_stashpv ("Coro", TRUE);
		1036
		1037	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1038	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1039	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1040	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1041	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1042	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1043
		1044	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1045	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1046
		1047	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1048	coro_ready[i] = newAV ();
		1049
		1050	{
		1051	SV *sv = perl_get_sv("Coro::API", 1);
		1052
		1053	coroapi.schedule = api_schedule;
		1054	coroapi.cede = api_cede;
		1055	coroapi.ready = api_ready;
		1056	coroapi.nready = &coro_nready;
		1057	coroapi.current = coro_current;
		1058
		1059	GCoroAPI = &coroapi;
		1060	sv_setiv(sv, (IV)&coroapi);
		1061	SvREADONLY_on(sv);
		1062	}
		1063	}
		1064
		1065	void
		1066	ready(self)
		1067	SV * self
		1068	PROTOTYPE: $
		1069	CODE:
		1070	api_ready (self);
		1071
		1072	int
		1073	nready(...)
		1074	PROTOTYPE:
		1075	CODE:
		1076	RETVAL = coro_nready;
		1077	OUTPUT:
		1078	RETVAL
		1079
		1080	void
		1081	schedule(...)
		1082	PROTOTYPE:
		1083	CODE:
		1084	api_schedule ();
		1085
		1086	void
		1087	cede(...)
		1088	PROTOTYPE:
		1089	CODE:
		1090	api_cede ();
		1091

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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 1.44 by root, Sat Mar 22 18:50:32 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 1.44 by root, Sat Mar 22 18:50:32 2003 UTC