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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.10 by root, Sat Jul 21 04:19:34 2001 UTC vs.
Revision 1.22 by root, Sat Aug 11 23:10:56 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::coroutine_initialization"	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;
65		115
66	/* mostly copied from op.c:cv_clone2 */	116	/* mostly copied from op.c:cv_clone2 */
67	STATIC AV *	117	STATIC AV *
68	clone_padlist (AV *protopadlist)	118	clone_padlist (AV *protopadlist)
…		…
231	#endif	281	#endif
232		282
233	#define SB do {	283	#define SB do {
234	#define SE } while (0)	284	#define SE } while (0)
235		285
236	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE
237	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE
238		288
239	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
240		290
241	static void	291	static void
242	load_state(pTHX_ Coro__State c)	292	load_state(pTHX_ Coro__State c)
243	{	293	{
244	PL_dowarn = c->dowarn;	294	PL_dowarn = c->dowarn;
		295	PL_in_eval = c->in_eval;
245		296
246	PL_curstackinfo = c->curstackinfo;	297	PL_curstackinfo = c->curstackinfo;
247	PL_curstack = c->curstack;	298	PL_curstack = c->curstack;
248	PL_mainstack = c->mainstack;	299	PL_mainstack = c->mainstack;
249	PL_stack_sp = c->stack_sp;	300	PL_stack_sp = c->stack_sp;
…		…
266	PL_savestack_max = c->savestack_max;	317	PL_savestack_max = c->savestack_max;
267	PL_retstack = c->retstack;	318	PL_retstack = c->retstack;
268	PL_retstack_ix = c->retstack_ix;	319	PL_retstack_ix = c->retstack_ix;
269	PL_retstack_max = c->retstack_max;	320	PL_retstack_max = c->retstack_max;
270	PL_curcop = c->curcop;	321	PL_curcop = c->curcop;
		322	PL_top_env = c->top_env;
271		323
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	324	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	325	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	326	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		327
…		…
302	save_state(pTHX_ Coro__State c, int flags)	354	save_state(pTHX_ Coro__State c, int flags)
303	{	355	{
304	{	356	{
305	dSP;	357	dSP;
306	I32 cxix = cxstack_ix;	358	I32 cxix = cxstack_ix;
		359	PERL_CONTEXT *ccstk = cxstack;
307	PERL_SI *top_si = PL_curstackinfo;	360	PERL_SI *top_si = PL_curstackinfo;
308	PERL_CONTEXT *ccstk = cxstack;
309		361
310	/*	362	/*
311	* the worst thing you can imagine happens first - we have to save	363	* the worst thing you can imagine happens first - we have to save
312	* (and reinitialize) all cv's in the whole callchain :(	364	* (and reinitialize) all cv's in the whole callchain :(
313	*/	365	*/
314		366
315	PUSHs (Nullsv);	367	PUSHs (Nullsv);
316	/* this loop was inspired by pp_caller */	368	/* this loop was inspired by pp_caller */
317	for (;;)	369	for (;;)
318	{	370	{
319	do	371	do
320	{	372	{
321	PERL_CONTEXT *cx = &ccstk[cxix--];	373	PERL_CONTEXT *cx = &ccstk[cxix--];
322		374
323	if (CxTYPE(cx) == CXt_SUB)	375	if (CxTYPE(cx) == CXt_SUB)
324	{	376	{
…		…
363	}	415	}
364		416
365	PUTBACK;	417	PUTBACK;
366	}	418	}
367		419
368	c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
369	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
370	c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423
		424	/* I have not the slightest idea of why av_reify is necessary */
		425	/* but if it's missing the defav contents magically get replaced sometimes */
		426	if (c->defav)
		427	av_reify (c->defav);
371		428
372	c->dowarn = PL_dowarn;	429	c->dowarn = PL_dowarn;
		430	c->in_eval = PL_in_eval;
373		431
374	c->curstackinfo = PL_curstackinfo;	432	c->curstackinfo = PL_curstackinfo;
375	c->curstack = PL_curstack;	433	c->curstack = PL_curstack;
376	c->mainstack = PL_mainstack;	434	c->mainstack = PL_mainstack;
377	c->stack_sp = PL_stack_sp;	435	c->stack_sp = PL_stack_sp;
…		…
394	c->savestack_max = PL_savestack_max;	452	c->savestack_max = PL_savestack_max;
395	c->retstack = PL_retstack;	453	c->retstack = PL_retstack;
396	c->retstack_ix = PL_retstack_ix;	454	c->retstack_ix = PL_retstack_ix;
397	c->retstack_max = PL_retstack_max;	455	c->retstack_max = PL_retstack_max;
398	c->curcop = PL_curcop;	456	c->curcop = PL_curcop;
		457	c->top_env = PL_top_env;
		458	}
		459
		460	/*
		461	* allocate various perl stacks. This is an exact copy
		462	* of perl.c:init_stacks, except that it uses less memory
		463	* on the assumption that coroutines do not usually need
		464	* a lot of stackspace.
		465	*/
		466	STATIC void
		467	coro_init_stacks (pTHX)
		468	{
		469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		470	PL_curstackinfo->si_type = PERLSI_MAIN;
		471	PL_curstack = PL_curstackinfo->si_stack;
		472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		473
		474	PL_stack_base = AvARRAY(PL_curstack);
		475	PL_stack_sp = PL_stack_base;
		476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		477
		478	New(50,PL_tmps_stack,96,SV*);
		479	PL_tmps_floor = -1;
		480	PL_tmps_ix = -1;
		481	PL_tmps_max = 96;
		482
		483	New(54,PL_markstack,16,I32);
		484	PL_markstack_ptr = PL_markstack;
		485	PL_markstack_max = PL_markstack + 16;
		486
		487	SET_MARK_OFFSET;
		488
		489	New(54,PL_scopestack,16,I32);
		490	PL_scopestack_ix = 0;
		491	PL_scopestack_max = 16;
		492
		493	New(54,PL_savestack,96,ANY);
		494	PL_savestack_ix = 0;
		495	PL_savestack_max = 96;
		496
		497	New(54,PL_retstack,8,OP*);
		498	PL_retstack_ix = 0;
		499	PL_retstack_max = 8;
399	}	500	}
400		501
401	/*	502	/*
402	* destroy the stacks, the callchain etc...	503	* destroy the stacks, the callchain etc...
403	* still there is a memleak of 128 bytes...	504	* still there is a memleak of 128 bytes...
…		…
439	Safefree(PL_scopestack);	540	Safefree(PL_scopestack);
440	Safefree(PL_savestack);	541	Safefree(PL_savestack);
441	Safefree(PL_retstack);	542	Safefree(PL_retstack);
442	}	543	}
443		544
		545	static void
		546	allocate_stack (Coro__State ctx, int alloc)
		547	{
		548	coro_stack *stack;
		549
		550	New (0, stack, 1, coro_stack);
		551
		552	stack->refcnt = 1;
		553	stack->usecnt = 1;
		554	stack->gencnt = ctx->gencnt = 0;
		555	if (alloc)
		556	{
		557	#ifdef HAVE_MMAP
		558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
		559	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);
		560	if (stack->sptr == (void *)-1)
		561	#endif
		562	{
		563	/FIXME//D//* reasonable stack size! */
		564	stack->ssize = -4096 * sizeof (long);
		565	New (0, stack->sptr, 4096, long);
		566	}
		567	}
		568	else
		569	stack->sptr = 0;
		570
		571	ctx->stack = stack;
		572	}
		573
		574	static void
		575	deallocate_stack (Coro__State ctx)
		576	{
		577	coro_stack *stack = ctx->stack;
		578
		579	ctx->stack = 0;
		580
		581	if (stack)
		582	{
		583	if (!--stack->refcnt)
		584	{
		585	#ifdef HAVE_MMAP
		586	if (stack->ssize > 0 && stack->sptr)
		587	munmap (stack->sptr, stack->ssize);
		588	else
		589	#else
		590	Safefree (stack->sptr);
		591	#endif
		592	Safefree (stack);
		593	}
		594	else if (ctx->gencnt == stack->gencnt)
		595	--stack->usecnt;
		596	}
		597	}
		598
		599	static void
		600	setup_coro (void *arg)
		601	{
		602	/*
		603	* emulate part of the perl startup here.
		604	*/
		605	dSP;
		606	Coro__State ctx = (Coro__State)arg;
		607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
		608
		609	coro_init_stacks (aTHX);
		610	/PL_curcop = 0;/
		611	/PL_in_eval = PL_in_eval;/ /* inherit */
		612	SvREFCNT_dec (GvAV (PL_defgv));
		613	GvAV (PL_defgv) = ctx->args;
		614
		615	SPAGAIN;
		616
		617	if (ctx->stack)
		618	{
		619	ctx->cursp = 0;
		620
		621	PUSHMARK(SP);
		622	PUTBACK;
		623	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		624
		625	if (SvTRUE (ERRSV))
		626	croak (NULL);
		627	else
		628	croak ("FATAL: CCTXT coroutine returned!");
		629	}
		630	else
		631	{
		632	UNOP myop;
		633
		634	PL_op = (OP *)&myop;
		635
		636	Zero(&myop, 1, UNOP);
		637	myop.op_next = Nullop;
		638	myop.op_flags = OPf_WANT_VOID;
		639
		640	PUSHMARK(SP);
		641	XPUSHs (sub_init);
		642	/*
		643	* the next line is slightly wrong, as PL_op->op_next
		644	* is actually being executed so we skip the first op.
		645	* that doesn't matter, though, since it is only
		646	* pp_nextstate and we never return...
		647	* ah yes, and I don't care anyways ;)
		648	*/
		649	PUTBACK;
		650	PL_op = pp_entersub();
		651	SPAGAIN;
		652
		653	ENTER; /* necessary e.g. for dounwind */
		654	}
		655	}
		656
		657	static void
		658	continue_coro (void *arg)
		659	{
		660	/*
		661	* this is a _very_ stripped down perl interpreter ;)
		662	*/
		663	Coro__State ctx = (Coro__State)arg;
		664
		665	/FIXME//* must set up top_env here */
		666	ctx->cursp = 0;
		667	PL_op = PL_op->op_next;
		668	CALLRUNOPS(aTHX);
		669
		670	abort ();
		671	}
		672
444	STATIC void	673	STATIC void
445	transfer(pTHX_ struct coro prev, struct coro next, int flags)	674	transfer(pTHX_ struct coro prev, struct coro next, int flags)
446	{	675	{
447	dSP;	676	dSP;
		677	dSTACKLEVEL;
448		678
449	if (prev != next)	679	if (prev != next)
450	{	680	{
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)	681	if (next->mainstack)
458	{	682	{
459	SAVE (prev, flags);	683	SAVE (prev, flags);
460	LOAD (next);	684	LOAD (next);
		685
461	/* mark this state as in-use */	686	/* mark this state as in-use */
462	next->mainstack = 0;	687	next->mainstack = 0;
463	next->tmps_ix = -2;	688	next->tmps_ix = -2;
		689
		690	/* stacklevel changed? if yes, grab the stack for us! */
		691	if (flags & TRANSFER_SAVE_CCTXT)
		692	{
		693	if (!prev->stack)
		694	allocate_stack (prev, 0);
		695	else if (prev->cursp != stacklevel
		696	&& prev->stack->usecnt > 1)
		697	{
		698	prev->gencnt = ++prev->stack->gencnt;
		699	prev->stack->usecnt = 1;
		700	}
		701
		702	/* has our stack been invalidated? */
		703	if (next->stack && next->stack->gencnt != next->gencnt)
		704	{
		705	deallocate_stack (next);
		706	allocate_stack (next, 1);
		707	coro_create (&(next->stack->cctx),
		708	continue_coro, (void *)next,
		709	next->stack->sptr, labs (next->stack->ssize));
		710	}
		711
		712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		713	}
		714
464	}	715	}
465	else if (next->tmps_ix == -2)	716	else if (next->tmps_ix == -2)
466	{
467	croak ("tried to transfer to running coroutine");	717	croak ("tried to transfer to running coroutine");
468	}
469	else	718	else
470	{	719	{
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 */	720	SAVE (prev, -1); /* first get rid of the old state */
477		721
478	init_stacks (); /* from perl.c */	722	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	*/	723	{
499	PUTBACK;	724	if (!prev->stack)
500	PL_op = pp_entersub(aTHX);	725	allocate_stack (prev, 0);
501	SPAGAIN;
502		726
503	ENTER; /* necessary e.g. for dounwind */	727	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		728	{
		729	setup_coro (next);
		730
		731	prev->stack->refcnt++;
		732	prev->stack->usecnt++;
		733	next->stack = prev->stack;
		734	next->gencnt = prev->gencnt;
		735	}
		736	else
		737	{
		738	allocate_stack (next, 1);
		739	coro_create (&(next->stack->cctx),
		740	setup_coro, (void *)next,
		741	next->stack->sptr, labs (next->stack->ssize));
		742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		743	}
		744	}
		745	else
		746	setup_coro (next);
504	}	747	}
505	}	748	}
		749
		750	next->cursp = stacklevel;
		751	}
		752
		753	static struct coro *
		754	sv_to_coro (SV arg, const char funcname, const char *varname)
		755	{
		756	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
		757	{
		758	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);
		759
		760	if (!he)
		761	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
		762
		763	arg = HeVAL(he);
		764	}
		765
		766	/* must also be changed inside Coro::Cont::yield */
		767	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)
		768	return (struct coro ) SvIV((SV)SvRV(arg));
		769	else
		770	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);
		771	}
		772
		773	/ Coro ******************************************************************/
		774
		775	#define PRIO_MAX 3
		776	#define PRIO_HIGH 1
		777	#define PRIO_NORMAL 0
		778	#define PRIO_LOW -1
		779	#define PRIO_IDLE -3
		780	#define PRIO_MIN -4
		781
		782	/* for Coro.pm */
		783	static GV coro_current, coro_idle;
		784	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		785
		786	static void
		787	coro_enq (SV *sv)
		788	{
		789	if (SvROK (sv))
		790	{
		791	SV *hv = SvRV (sv);
		792	if (SvTYPE (hv) == SVt_PVHV)
		793	{
		794	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
		795	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		796
		797	prio = prio > PRIO_MAX ? PRIO_MAX
		798	: prio < PRIO_MIN ? PRIO_MIN
		799	: prio;
		800
		801	av_push (coro_ready [prio - PRIO_MIN], sv);
		802
		803	return;
		804	}
		805	}
		806
		807	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		808	}
		809
		810	static SV *
		811	coro_deq (int min_prio)
		812	{
		813	int prio = PRIO_MAX - PRIO_MIN;
		814
		815	min_prio -= PRIO_MIN;
		816	if (min_prio < 0)
		817	min_prio = 0;
		818
		819	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		820	if (av_len (coro_ready[prio]) >= 0)
		821	return av_shift (coro_ready[prio]);
		822
		823	return 0;
506	}	824	}
507		825
508	MODULE = Coro::State PACKAGE = Coro::State	826	MODULE = Coro::State PACKAGE = Coro::State
509		827
510	PROTOTYPES: ENABLE	828	PROTOTYPES: ENABLE
511		829
512	BOOT:	830	BOOT:
513	{ /* {} necessary for stoopid perl-5.6.x */	831	{ /* {} necessary for stoopid perl-5.6.x */
		832	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		833	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
514	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	834	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
515		835
516	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	836	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
517	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	837	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
518	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	838	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		839	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
519		840
520	if (!padlist_cache)	841	if (!padlist_cache)
521	padlist_cache = newHV ();	842	padlist_cache = newHV ();
		843
		844	main_mainstack = PL_mainstack;
522	}	845	}
523		846
524	Coro::State	847	Coro::State
525	_newprocess(args)	848	_newprocess(args)
526	SV * args	849	SV * args
…		…
531	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	854	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
532	croak ("Coro::State::_newprocess expects an arrayref");	855	croak ("Coro::State::_newprocess expects an arrayref");
533		856
534	New (0, coro, 1, struct coro);	857	New (0, coro, 1, struct coro);
535		858
		859	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
536	coro->mainstack = 0; /* actual work is done inside transfer */	860	coro->mainstack = 0; /* actual work is done inside transfer */
537	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	861	coro->stack = 0;
538		862
539	RETVAL = coro;	863	RETVAL = coro;
540	OUTPUT:	864	OUTPUT:
541	RETVAL	865	RETVAL
542		866
543	void	867	void
544	transfer(prev, next, flags = SAVE_DEFAV)	868	transfer(prev, next, flags)
545	Coro::State_or_hashref prev	869	Coro::State_or_hashref prev
546	Coro::State_or_hashref next	870	Coro::State_or_hashref next
547	int flags	871	int flags
548	PROTOTYPE: @	872	PROTOTYPE: @
549	CODE:	873	CODE:
550		874	PUTBACK;
551	transfer (aTHX_ prev, next, flags);	875	transfer (aTHX_ prev, next, flags);
		876	SPAGAIN;
552		877
553	void	878	void
554	DESTROY(coro)	879	DESTROY(coro)
555	Coro::State coro	880	Coro::State coro
556	CODE:	881	CODE:
557		882
558	if (coro->mainstack)	883	if (coro->mainstack && coro->mainstack != main_mainstack)
559	{	884	{
560	struct coro temp;	885	struct coro temp;
561		886
562	SAVE(aTHX_ (&temp), SAVE_ALL);	887	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
563	LOAD(aTHX_ coro);	888	LOAD(aTHX_ coro);
564		889
565	destroy_stacks ();	890	destroy_stacks (aTHX);
566		891
567	LOAD((&temp)); /* this will get rid of defsv etc.. */	892	LOAD((&temp)); /* this will get rid of defsv etc.. */
		893
		894	coro->mainstack = 0;
568	}	895	}
		896
		897	deallocate_stack (coro);
569		898
570	Safefree (coro);	899	Safefree (coro);
571		900
572	void	901	void
573	flush()	902	flush()
574	CODE:	903	CODE:
575	#ifdef MAY_FLUSH	904	#ifdef MAY_FLUSH
576	flush_padlist_cache ();	905	flush_padlist_cache ();
577	#endif	906	#endif
578		907
		908	void
		909	_exit(code)
		910	int code
		911	PROTOTYPE: $
		912	CODE:
		913	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
		914	_exit (code);
		915	#else
		916	signal (SIGTERM, SIG_DFL);
		917	raise (SIGTERM);
		918	exit (code);
		919	#endif
		920
579	MODULE = Coro::State PACKAGE = Coro::Cont	921	MODULE = Coro::State PACKAGE = Coro::Cont
580		922
581	# this is dirty and should be in it's own .xs	923	# this is slightly dirty (should expose a c-level api)
582		924
583	void	925	void
584	result(...)	926	yield(...)
585	PROTOTYPE: @	927	PROTOTYPE: @
586	CODE:	928	CODE:
587	static SV *returnstk;	929	static SV *returnstk;
588	SV *sv;	930	SV *sv;
589	AV *defav = GvAV (PL_defgv);	931	AV *defav = GvAV (PL_defgv);
590	struct coro prev, next;	932	struct coro prev, next;
591		933
592	if (!returnstk)	934	if (!returnstk)
593	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	935	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
594		936
595	/* set up @_ */	937	/* set up @_ -- ugly */
596	av_clear (defav);	938	av_clear (defav);
597	av_fill (defav, items - 1);	939	av_fill (defav, items - 1);
598	while (items--)	940	while (items--)
599	av_store (defav, items, SvREFCNT_inc (ST(items)));	941	av_store (defav, items, SvREFCNT_inc (ST(items)));
600		942
601	mg_get (returnstk); /* isn't documentation wrong for mg_get? */	943	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
602	sv = av_pop ((AV *)SvRV (returnstk));	944	sv = av_pop ((AV *)SvRV (returnstk));
603	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	945	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)));	946	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
605	SvREFCNT_dec (sv);	947	SvREFCNT_dec (sv);
		948
606	transfer(prev, next, 0);	949	transfer(aTHX_ prev, next, 0);
607		950
		951	MODULE = Coro::State PACKAGE = Coro
		952
		953	# this is slightly dirty (should expose a c-level api)
		954
		955	BOOT:
		956	{
		957	int i;
		958	HV *stash = gv_stashpv ("Coro", TRUE);
		959
		960	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		961	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		962	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		963	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		964	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		965	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		966
		967	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		968	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		969
		970	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		971	coro_ready[i] = newAV ();
		972	}
		973
		974	void
		975	ready(self)
		976	SV * self
		977	CODE:
		978	coro_enq (SvREFCNT_inc (self));
		979
		980	void
		981	schedule(...)
		982	ALIAS:
		983	cede = 1
		984	CODE:
		985	SV prev, next;
		986
		987	prev = GvSV (coro_current);
		988
		989	if (ix)
		990	coro_enq (SvREFCNT_inc (prev));
		991
		992	next = coro_deq (PRIO_MIN);
		993
		994	if (!next)
		995	next = SvREFCNT_inc (GvSV (coro_idle));
		996
		997	GvSV (coro_current) = SvREFCNT_inc (next);
		998	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
		999	sv_to_coro (next, "Coro::schedule", "next coroutine"),
		1000	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		1001	SvREFCNT_dec (next);
		1002	SvREFCNT_dec (prev);
		1003

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Comparing Coro/Coro/State.xs (file contents): Revision 1.10 by root, Sat Jul 21 04:19:34 2001 UTC vs. Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.10 by root, Sat Jul 21 04:19:34 2001 UTC vs.
Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC