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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.9 by root, Sat Jul 21 02:49:09 2001 UTC vs.
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 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	#if 1	5	#include "libcoro/coro.c"
6	# define CHK(x) (void *)0	6
		7	#include <signal.h>
		8
		9	#ifdef HAVE_MMAP
		10	# include <unistd.h>
		11	# include <sys/mman.h>
		12	# ifndef MAP_ANON
		13	# ifdef MAP_ANONYMOUS
		14	# define MAP_ANON MAP_ANONYMOUS
		15	# else
		16	# undef HAVE_MMAP
		17	# endif
		18	# endif
		19	#endif
		20
		21	#define MAY_FLUSH /* increases codesize */
		22
		23	/* perl-related */
		24	#define TRANSFER_SAVE_DEFAV 0x00000001
		25	#define TRANSFER_SAVE_DEFSV 0x00000002
		26	#define TRANSFER_SAVE_ERRSV 0x00000004
		27	/* c-related */
		28	#define TRANSFER_SAVE_CCTXT 0x00000008
		29	#ifdef CORO_LAZY_STACK
		30	# define TRANSFER_LAZY_STACK 0x00000010
7	#else	31	#else
8	# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x)	32	# define TRANSFER_LAZY_STACK 0x00000000
9	#endif	33	#endif
10		34
11	#define MAY_FLUSH /* increases codesize */	35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
		36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
12		37
13	#define SUB_INIT "Coro::State::_newcoro"	38	#define SUB_INIT "Coro::State::initialize"
		39	#define UCORO_STATE "_coro_state"
14		40
15	#define SAVE_DEFAV 0x00000001	41	/* The next macro should delcare a variable stacklevel that contains and approximation
16	#define SAVE_DEFSV 0x00000002	42	* to the current C stack pointer. It's property is that it changes with each call
17	#define SAVE_ERRSV 0x00000004	43	* and should be unique. */
		44	#define dSTACKLEVEL void *stacklevel = &stacklevel
18		45
19	#define SAVE_ALL -1	46	#define labs(l) ((l) >= 0 ? (l) : -(l))
		47
		48	/* this is actually not only the c stack but also c registers etc... */
		49	typedef struct {
		50	int refcnt; /* pointer reference counter */
		51	int usecnt; /* shared by how many coroutines */
		52	int gencnt; /* generation counter */
		53
		54	coro_context cctx;
		55
		56	void *sptr;
		57	long ssize; /* positive == mmap, otherwise malloc */
		58	} coro_stack;
20		59
21	struct coro {	60	struct coro {
		61	/* the optional C context */
		62	coro_stack *stack;
		63	void *cursp;
		64	int gencnt;
		65
22	/* optionally saved, might be zero */	66	/* optionally saved, might be zero */
23	AV *defav;	67	AV *defav;
24	SV *defsv;	68	SV *defsv;
25	SV *errsv;	69	SV *errsv;
26		70
27	/* saved global state not related to stacks */	71	/* saved global state not related to stacks */
28	U8 dowarn;	72	U8 dowarn;
		73	I32 in_eval;
29		74
30	/* the stacks and related info (callchain etc..) */	75	/* the stacks and related info (callchain etc..) */
31	PERL_SI *curstackinfo;	76	PERL_SI *curstackinfo;
32	AV *curstack;	77	AV *curstack;
33	AV *mainstack;	78	AV *mainstack;
51	I32 savestack_max;	96	I32 savestack_max;
52	OP **retstack;	97	OP **retstack;
53	I32 retstack_ix;	98	I32 retstack_ix;
54	I32 retstack_max;	99	I32 retstack_max;
55	COP *curcop;	100	COP *curcop;
		101	JMPENV *top_env;
56		102
57	/* data associated with this coroutine (initial args) */	103	/* data associated with this coroutine (initial args) */
58	AV *args;	104	AV *args;
59	};	105	};
60		106
61	typedef struct coro *Coro__State;	107	typedef struct coro *Coro__State;
62	typedef struct coro *Coro__State_or_hashref;	108	typedef struct coro *Coro__State_or_hashref;
63		109
		110	static AV main_mainstack; / used to differentiate between $main and others */
		111	static HV *coro_state_stash;
		112	static SV *ucoro_state_sv;
		113	static U32 ucoro_state_hash;
64	static HV *padlist_cache;	114	static HV *padlist_cache;
		115
		116	/* for Coro.pm */
		117	static GV coro_current, coro_idle;
		118	static AV *coro_ready;
65		119
66	/* mostly copied from op.c:cv_clone2 */	120	/* mostly copied from op.c:cv_clone2 */
67	STATIC AV *	121	STATIC AV *
68	clone_padlist (AV *protopadlist)	122	clone_padlist (AV *protopadlist)
69	{	123	{
…		…
231	#endif	285	#endif
232		286
233	#define SB do {	287	#define SB do {
234	#define SE } while (0)	288	#define SE } while (0)
235		289
236	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	290	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE
237	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	291	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE
238		292
239	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
240		294
241	static void	295	static void
242	load_state(pTHX_ Coro__State c)	296	load_state(pTHX_ Coro__State c)
243	{	297	{
244	PL_dowarn = c->dowarn;	298	PL_dowarn = c->dowarn;
		299	PL_in_eval = c->in_eval;
245		300
246	PL_curstackinfo = c->curstackinfo;	301	PL_curstackinfo = c->curstackinfo;
247	PL_curstack = c->curstack;	302	PL_curstack = c->curstack;
248	PL_mainstack = c->mainstack;	303	PL_mainstack = c->mainstack;
249	PL_stack_sp = c->stack_sp;	304	PL_stack_sp = c->stack_sp;
…		…
266	PL_savestack_max = c->savestack_max;	321	PL_savestack_max = c->savestack_max;
267	PL_retstack = c->retstack;	322	PL_retstack = c->retstack;
268	PL_retstack_ix = c->retstack_ix;	323	PL_retstack_ix = c->retstack_ix;
269	PL_retstack_max = c->retstack_max;	324	PL_retstack_max = c->retstack_max;
270	PL_curcop = c->curcop;	325	PL_curcop = c->curcop;
		326	PL_top_env = c->top_env;
271		327
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	328	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	329	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	330	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		331
…		…
302	save_state(pTHX_ Coro__State c, int flags)	358	save_state(pTHX_ Coro__State c, int flags)
303	{	359	{
304	{	360	{
305	dSP;	361	dSP;
306	I32 cxix = cxstack_ix;	362	I32 cxix = cxstack_ix;
		363	PERL_CONTEXT *ccstk = cxstack;
307	PERL_SI *top_si = PL_curstackinfo;	364	PERL_SI *top_si = PL_curstackinfo;
308	PERL_CONTEXT *ccstk = cxstack;
309		365
310	/*	366	/*
311	* the worst thing you can imagine happens first - we have to save	367	* the worst thing you can imagine happens first - we have to save
312	* (and reinitialize) all cv's in the whole callchain :(	368	* (and reinitialize) all cv's in the whole callchain :(
313	*/	369	*/
314		370
315	PUSHs (Nullsv);	371	PUSHs (Nullsv);
316	/* this loop was inspired by pp_caller */	372	/* this loop was inspired by pp_caller */
317	for (;;)	373	for (;;)
318	{	374	{
319	do	375	do
320	{	376	{
321	PERL_CONTEXT *cx = &ccstk[cxix--];	377	PERL_CONTEXT *cx = &ccstk[cxix--];
322		378
323	if (CxTYPE(cx) == CXt_SUB)	379	if (CxTYPE(cx) == CXt_SUB)
324	{	380	{
…		…
363	}	419	}
364		420
365	PUTBACK;	421	PUTBACK;
366	}	422	}
367		423
368	c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	424	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
369	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	425	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
370	c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	426	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		427
		428	/* I have not the slightest idea of why av_reify is necessary */
		429	/* but if it's missing the defav contents magically get replaced sometimes */
		430	if (c->defav)
		431	av_reify (c->defav);
371		432
372	c->dowarn = PL_dowarn;	433	c->dowarn = PL_dowarn;
		434	c->in_eval = PL_in_eval;
373		435
374	c->curstackinfo = PL_curstackinfo;	436	c->curstackinfo = PL_curstackinfo;
375	c->curstack = PL_curstack;	437	c->curstack = PL_curstack;
376	c->mainstack = PL_mainstack;	438	c->mainstack = PL_mainstack;
377	c->stack_sp = PL_stack_sp;	439	c->stack_sp = PL_stack_sp;
…		…
394	c->savestack_max = PL_savestack_max;	456	c->savestack_max = PL_savestack_max;
395	c->retstack = PL_retstack;	457	c->retstack = PL_retstack;
396	c->retstack_ix = PL_retstack_ix;	458	c->retstack_ix = PL_retstack_ix;
397	c->retstack_max = PL_retstack_max;	459	c->retstack_max = PL_retstack_max;
398	c->curcop = PL_curcop;	460	c->curcop = PL_curcop;
		461	c->top_env = PL_top_env;
		462	}
		463
		464	/*
		465	* allocate various perl stacks. This is an exact copy
		466	* of perl.c:init_stacks, except that it uses less memory
		467	* on the assumption that coroutines do not usually need
		468	* a lot of stackspace.
		469	*/
		470	STATIC void
		471	coro_init_stacks (pTHX)
		472	{
		473	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		474	PL_curstackinfo->si_type = PERLSI_MAIN;
		475	PL_curstack = PL_curstackinfo->si_stack;
		476	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		477
		478	PL_stack_base = AvARRAY(PL_curstack);
		479	PL_stack_sp = PL_stack_base;
		480	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		481
		482	New(50,PL_tmps_stack,96,SV*);
		483	PL_tmps_floor = -1;
		484	PL_tmps_ix = -1;
		485	PL_tmps_max = 96;
		486
		487	New(54,PL_markstack,16,I32);
		488	PL_markstack_ptr = PL_markstack;
		489	PL_markstack_max = PL_markstack + 16;
		490
		491	SET_MARK_OFFSET;
		492
		493	New(54,PL_scopestack,16,I32);
		494	PL_scopestack_ix = 0;
		495	PL_scopestack_max = 16;
		496
		497	New(54,PL_savestack,96,ANY);
		498	PL_savestack_ix = 0;
		499	PL_savestack_max = 96;
		500
		501	New(54,PL_retstack,8,OP*);
		502	PL_retstack_ix = 0;
		503	PL_retstack_max = 8;
399	}	504	}
400		505
401	/*	506	/*
402	* destroy the stacks, the callchain etc...	507	* destroy the stacks, the callchain etc...
403	* still there is a memleak of 128 bytes...	508	* still there is a memleak of 128 bytes...
…		…
439	Safefree(PL_scopestack);	544	Safefree(PL_scopestack);
440	Safefree(PL_savestack);	545	Safefree(PL_savestack);
441	Safefree(PL_retstack);	546	Safefree(PL_retstack);
442	}	547	}
443		548
		549	static void
		550	allocate_stack (Coro__State ctx, int alloc)
		551	{
		552	coro_stack *stack;
		553
		554	New (0, stack, 1, coro_stack);
		555
		556	stack->refcnt = 1;
		557	stack->usecnt = 1;
		558	stack->gencnt = ctx->gencnt = 0;
		559	if (alloc)
		560	{
		561	#ifdef HAVE_MMAP
		562	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
		563	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);
		564	if (stack->sptr == (void *)-1)
		565	#endif
		566	{
		567	/FIXME//D//* reasonable stack size! */
		568	stack->ssize = -4096 * sizeof (long);
		569	New (0, stack->sptr, 4096, long);
		570	}
		571	}
		572	else
		573	stack->sptr = 0;
		574
		575	ctx->stack = stack;
		576	}
		577
		578	static void
		579	deallocate_stack (Coro__State ctx)
		580	{
		581	coro_stack *stack = ctx->stack;
		582
		583	ctx->stack = 0;
		584
		585	if (stack)
		586	{
		587	if (!--stack->refcnt)
		588	{
		589	#ifdef HAVE_MMAP
		590	if (stack->ssize > 0 && stack->sptr)
		591	munmap (stack->sptr, stack->ssize);
		592	else
		593	#else
		594	Safefree (stack->sptr);
		595	#endif
		596	Safefree (stack);
		597	}
		598	else if (ctx->gencnt == stack->gencnt)
		599	--stack->usecnt;
		600	}
		601	}
		602
		603	static void
		604	setup_coro (void *arg)
		605	{
		606	/*
		607	* emulate part of the perl startup here.
		608	*/
		609	dSP;
		610	Coro__State ctx = (Coro__State)arg;
		611	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
		612
		613	coro_init_stacks (aTHX);
		614	/PL_curcop = 0;/
		615	/PL_in_eval = PL_in_eval;/ /* inherit */
		616	SvREFCNT_dec (GvAV (PL_defgv));
		617	GvAV (PL_defgv) = ctx->args;
		618
		619	SPAGAIN;
		620
		621	if (ctx->stack)
		622	{
		623	ctx->cursp = 0;
		624
		625	PUSHMARK(SP);
		626	PUTBACK;
		627	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		628
		629	if (SvTRUE (ERRSV))
		630	croak (NULL);
		631	else
		632	croak ("FATAL: CCTXT coroutine returned!");
		633	}
		634	else
		635	{
		636	UNOP myop;
		637
		638	PL_op = (OP *)&myop;
		639
		640	Zero(&myop, 1, UNOP);
		641	myop.op_next = Nullop;
		642	myop.op_flags = OPf_WANT_VOID;
		643
		644	PUSHMARK(SP);
		645	XPUSHs (sub_init);
		646	/*
		647	* the next line is slightly wrong, as PL_op->op_next
		648	* is actually being executed so we skip the first op.
		649	* that doesn't matter, though, since it is only
		650	* pp_nextstate and we never return...
		651	* ah yes, and I don't care anyways ;)
		652	*/
		653	PUTBACK;
		654	PL_op = pp_entersub();
		655	SPAGAIN;
		656
		657	ENTER; /* necessary e.g. for dounwind */
		658	}
		659	}
		660
		661	static void
		662	continue_coro (void *arg)
		663	{
		664	/*
		665	* this is a _very_ stripped down perl interpreter ;)
		666	*/
		667	Coro__State ctx = (Coro__State)arg;
		668
		669	/FIXME//* must set up top_env here */
		670	ctx->cursp = 0;
		671	PL_op = PL_op->op_next;
		672	CALLRUNOPS(aTHX);
		673
		674	abort ();
		675	}
		676
444	STATIC void	677	STATIC void
445	transfer(pTHX_ struct coro prev, struct coro next, int flags)	678	transfer(pTHX_ struct coro prev, struct coro next, int flags)
446	{	679	{
447	dSP;	680	dSP;
		681	dSTACKLEVEL;
448		682
449	if (prev != next)	683	if (prev != next)
450	{	684	{
451	/*
452	* this could be done in newprocess which would lead to
453	* extremely elegant and fast (just SAVE/LOAD)
454	* code here, but lazy allocation of stacks has also
455	* some virtues and the overhead of the if() is nil.
456	*/
457	if (next->mainstack)	685	if (next->mainstack)
458	{	686	{
459	SAVE (prev, flags);	687	SAVE (prev, flags);
460	LOAD (next);	688	LOAD (next);
		689
461	/* mark this state as in-use */	690	/* mark this state as in-use */
462	next->mainstack = 0;	691	next->mainstack = 0;
463	next->tmps_ix = -2;	692	next->tmps_ix = -2;
		693
		694	/* stacklevel changed? if yes, grab the stack for us! */
		695	if (flags & TRANSFER_SAVE_CCTXT)
		696	{
		697	if (!prev->stack)
		698	allocate_stack (prev, 0);
		699	else if (prev->cursp != stacklevel
		700	&& prev->stack->usecnt > 1)
		701	{
		702	prev->gencnt = ++prev->stack->gencnt;
		703	prev->stack->usecnt = 1;
		704	}
		705
		706	/* has our stack been invalidated? */
		707	if (next->stack && next->stack->gencnt != next->gencnt)
		708	{
		709	deallocate_stack (next);
		710	allocate_stack (next, 1);
		711	coro_create (&(next->stack->cctx),
		712	continue_coro, (void *)next,
		713	next->stack->sptr, labs (next->stack->ssize));
		714	}
		715
		716	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		717	}
		718
464	}	719	}
465	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
466	{
467	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
468	}
469	else	722	else
470	{	723	{
471	/*
472	* emulate part of the perl startup here.
473	*/
474	UNOP myop;
475
476	SAVE (prev, -1); /* first get rid of the old state */	724	SAVE (prev, -1); /* first get rid of the old state */
477		725
478	init_stacks (); /* from perl.c */	726	if (flags & TRANSFER_SAVE_CCTXT)
479	SPAGAIN;
480
481	PL_op = (OP *)&myop;
482	/PL_curcop = 0;/
483	SvREFCNT_dec (GvAV (PL_defgv));
484	GvAV (PL_defgv) = next->args;
485
486	Zero(&myop, 1, UNOP);
487	myop.op_next = Nullop;
488	myop.op_flags = OPf_WANT_VOID;
489
490	PUSHMARK(SP);
491	XPUSHs ((SV*)get_cv(SUB_INIT, TRUE));
492	/*
493	* the next line is slightly wrong, as PL_op->op_next
494	* is actually being executed so we skip the first op.
495	* that doesn't matter, though, since it is only
496	* pp_nextstate and we never return...
497	* ah yes, and I don't care anyways ;)
498	*/	727	{
499	PUTBACK;	728	if (!prev->stack)
500	PL_op = pp_entersub(aTHX);	729	allocate_stack (prev, 0);
501	SPAGAIN;
502		730
503	ENTER; /* necessary e.g. for dounwind */	731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		732	{
		733	setup_coro (next);
		734
		735	prev->stack->refcnt++;
		736	prev->stack->usecnt++;
		737	next->stack = prev->stack;
		738	next->gencnt = prev->gencnt;
		739	}
		740	else
		741	{
		742	allocate_stack (next, 1);
		743	coro_create (&(next->stack->cctx),
		744	setup_coro, (void *)next,
		745	next->stack->sptr, labs (next->stack->ssize));
		746	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		747	}
		748	}
		749	else
		750	setup_coro (next);
504	}	751	}
505	}	752	}
		753
		754	next->cursp = stacklevel;
		755	}
		756
		757	static struct coro *
		758	sv_to_coro (SV arg, const char funcname, const char *varname)
		759	{
		760	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
		761	{
		762	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);
		763
		764	if (!he)
		765	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
		766
		767	arg = HeVAL(he);
		768	}
		769
		770	/* must also be changed inside Coro::Cont::yield */
		771	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)
		772	return (struct coro ) SvIV((SV)SvRV(arg));
		773	else
		774	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);
506	}	775	}
507		776
508	MODULE = Coro::State PACKAGE = Coro::State	777	MODULE = Coro::State PACKAGE = Coro::State
509		778
510	PROTOTYPES: ENABLE	779	PROTOTYPES: ENABLE
511		780
512	BOOT:	781	BOOT:
513	{ /* {} necessary for stoopid perl-5.6.x */	782	{ /* {} necessary for stoopid perl-5.6.x */
		783	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		784	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
514	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	785	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
515		786
516	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	787	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
517	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	788	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
518	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	789	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		790	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
519		791
520	if (!padlist_cache)	792	if (!padlist_cache)
521	padlist_cache = newHV ();	793	padlist_cache = newHV ();
		794
		795	main_mainstack = PL_mainstack;
522	}	796	}
523		797
524	Coro::State	798	Coro::State
525	_newprocess(args)	799	_newprocess(args)
526	SV * args	800	SV * args
…		…
531	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	805	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
532	croak ("Coro::State::_newprocess expects an arrayref");	806	croak ("Coro::State::_newprocess expects an arrayref");
533		807
534	New (0, coro, 1, struct coro);	808	New (0, coro, 1, struct coro);
535		809
		810	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
536	coro->mainstack = 0; /* actual work is done inside transfer */	811	coro->mainstack = 0; /* actual work is done inside transfer */
537	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	812	coro->stack = 0;
538		813
539	RETVAL = coro;	814	RETVAL = coro;
540	OUTPUT:	815	OUTPUT:
541	RETVAL	816	RETVAL
542		817
543	void	818	void
544	transfer(prev, next, flags = SAVE_DEFAV)	819	transfer(prev, next, flags)
545	Coro::State_or_hashref prev	820	Coro::State_or_hashref prev
546	Coro::State_or_hashref next	821	Coro::State_or_hashref next
547	int flags	822	int flags
548	PROTOTYPE: @	823	PROTOTYPE: @
549	CODE:	824	CODE:
550		825	PUTBACK;
551	transfer (aTHX_ prev, next, flags);	826	transfer (aTHX_ prev, next, flags);
		827	SPAGAIN;
552		828
553	void	829	void
554	DESTROY(coro)	830	DESTROY(coro)
555	Coro::State coro	831	Coro::State coro
556	CODE:	832	CODE:
557		833
558	if (coro->mainstack)	834	if (coro->mainstack && coro->mainstack != main_mainstack)
559	{	835	{
560	struct coro temp;	836	struct coro temp;
561		837
562	SAVE(aTHX_ (&temp), SAVE_ALL);	838	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
563	LOAD(aTHX_ coro);	839	LOAD(aTHX_ coro);
564		840
565	destroy_stacks ();	841	destroy_stacks (aTHX);
566		842
567	LOAD((&temp)); /* this will get rid of defsv etc.. */	843	LOAD((&temp)); /* this will get rid of defsv etc.. */
		844
		845	coro->mainstack = 0;
568	}	846	}
		847
		848	deallocate_stack (coro);
569		849
570	Safefree (coro);	850	Safefree (coro);
571		851
572	void	852	void
573	flush()	853	flush()
574	CODE:	854	CODE:
575	#ifdef MAY_FLUSH	855	#ifdef MAY_FLUSH
576	flush_padlist_cache ();	856	flush_padlist_cache ();
577	#endif	857	#endif
578		858
		859	void
		860	_exit(code)
		861	int code
		862	PROTOTYPE: $
		863	CODE:
		864	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
		865	_exit (code);
		866	#else
		867	signal (SIGTERM, SIG_DFL);
		868	raise (SIGTERM);
		869	exit (code);
		870	#endif
		871
579	MODULE = Coro::State PACKAGE = Coro::Cont	872	MODULE = Coro::State PACKAGE = Coro::Cont
580		873
581	# this is dirty and should be in it's own .xs	874	# this is slightly dirty (should expose a c-level api)
582		875
583	void	876	void
584	result(...)	877	yield(...)
585	PROTOTYPE: @	878	PROTOTYPE: @
586	CODE:	879	CODE:
587	static SV *returnstk;	880	static SV *returnstk;
588	SV *sv;	881	SV *sv;
589	AV *defav = GvAV (PL_defgv);	882	AV *defav = GvAV (PL_defgv);
590	struct coro prev, next;	883	struct coro prev, next;
591		884
592	if (!returnstk)	885	if (!returnstk)
593	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	886	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
594		887
595	/* set up @_ */	888	/* set up @_ -- ugly */
596	av_clear (defav);	889	av_clear (defav);
597	av_fill (defav, items - 1);	890	av_fill (defav, items - 1);
598	while (items--)	891	while (items--)
599	av_store (defav, items, SvREFCNT_inc (ST(items)));	892	av_store (defav, items, SvREFCNT_inc (ST(items)));
600		893
601	mg_get (returnstk); /* isn't documentation wrong for mg_get? */	894	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
602	sv = av_pop ((AV *)SvRV (returnstk));	895	sv = av_pop ((AV *)SvRV (returnstk));
603	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	896	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
604	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	897	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
605	SvREFCNT_dec (sv);	898	SvREFCNT_dec (sv);
		899
606	transfer(prev, next, 0);	900	transfer(aTHX_ prev, next, 0);
607		901
		902	MODULE = Coro::State PACKAGE = Coro
		903
		904	# this is slightly dirty (should expose a c-level api)
		905
		906	BOOT:
		907	{
		908	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		909	coro_ready = newAV ();
		910	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		911	}
		912
		913	void
		914	ready(self)
		915	SV * self
		916	CODE:
		917	av_push (coro_ready, SvREFCNT_inc (self));
		918
		919	void
		920	schedule(...)
		921	ALIAS:
		922	cede = 1
		923	CODE:
		924	SV *prev = GvSV (coro_current);
		925	SV *next = av_shift (coro_ready);
		926
		927	if (next == &PL_sv_undef)
		928	next = SvREFCNT_inc (GvSV (coro_idle));
		929
		930	if (ix)
		931	av_push (coro_ready, SvREFCNT_inc (prev));
		932
		933	GvSV (coro_current) = SvREFCNT_inc (next);
		934	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
		935	sv_to_coro (next, "Coro::schedule", "next coroutine"),
		936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		937	SvREFCNT_dec (next);
		938	SvREFCNT_dec (prev);
		939

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Comparing Coro/Coro/State.xs (file contents): Revision 1.9 by root, Sat Jul 21 02:49:09 2001 UTC vs. Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.9 by root, Sat Jul 21 02:49:09 2001 UTC vs.
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC