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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.18 by root, Thu Jul 26 03:46:15 2001 UTC vs.
Revision 1.27 by root, Mon Aug 20 16:58:19 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	#include "libcoro/coro.c"	5	#include "libcoro/coro.c"
		6
		7	#include <signal.h>
6		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>
10	# ifndef MAP_ANON	12	# ifndef MAP_ANON
16	# endif	18	# endif
17	#endif	19	#endif
18		20
19	#define MAY_FLUSH /* increases codesize */	21	#define MAY_FLUSH /* increases codesize */
20		22
21	/* perl-related */
22	#define TRANSFER_SAVE_DEFAV 0x00000001
23	#define TRANSFER_SAVE_DEFSV 0x00000002
24	#define TRANSFER_SAVE_ERRSV 0x00000004
25	/* c-related */
26	#define TRANSFER_SAVE_CCTXT 0x00000008
27	#ifdef CORO_LAZY_STACK
28	# define TRANSFER_LAZY_STACK 0x00000010
29	#else
30	# define TRANSFER_LAZY_STACK 0x00000000
31	#endif
32
33	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
34	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
35
36	#define SUB_INIT "Coro::State::initialize"	23	#define SUB_INIT "Coro::State::initialize"
37	#define UCORO_STATE "_coro_state"	24	#define UCORO_STATE "_coro_state"
38		25
39	/* The next macro should delcare a variable stacklevel that contains and approximation	26	/* The next macro should delcare a variable stacklevel that contains and approximation
40	* 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
41	* and should be unique. */	28	* and should be unique. */
42	#define dSTACKLEVEL void *stacklevel = &stacklevel	29	#define dSTACKLEVEL void *stacklevel = &stacklevel
43		30
44	#define labs(l) ((l) >= 0 ? (l) : -(l))	31	#define labs(l) ((l) >= 0 ? (l) : -(l))
		32
		33	#include "CoroAPI.h"
		34
		35	static struct CoroAPI coroapi;
45		36
46	/* this is actually not only the c stack but also c registers etc... */	37	/* this is actually not only the c stack but also c registers etc... */
47	typedef struct {	38	typedef struct {
48	int refcnt; /* pointer reference counter */	39	int refcnt; /* pointer reference counter */
49	int usecnt; /* shared by how many coroutines */	40	int usecnt; /* shared by how many coroutines */
…		…
66	SV *defsv;	57	SV *defsv;
67	SV *errsv;	58	SV *errsv;
68		59
69	/* saved global state not related to stacks */	60	/* saved global state not related to stacks */
70	U8 dowarn;	61	U8 dowarn;
		62	I32 in_eval;
71		63
72	/* the stacks and related info (callchain etc..) */	64	/* the stacks and related info (callchain etc..) */
73	PERL_SI *curstackinfo;	65	PERL_SI *curstackinfo;
74	AV *curstack;	66	AV *curstack;
75	AV *mainstack;	67	AV *mainstack;
…		…
93	I32 savestack_max;	85	I32 savestack_max;
94	OP **retstack;	86	OP **retstack;
95	I32 retstack_ix;	87	I32 retstack_ix;
96	I32 retstack_max;	88	I32 retstack_max;
97	COP *curcop;	89	COP *curcop;
98	JMPENV start_env;
99	JMPENV *top_env;	90	JMPENV *top_env;
100		91
101	/* data associated with this coroutine (initial args) */	92	/* data associated with this coroutine (initial args) */
102	AV *args;	93	AV *args;
103	};	94	};
…		…
204		195
205	return newpadlist;	196	return newpadlist;
206	}	197	}
207		198
208	#ifdef MAY_FLUSH	199	#ifdef MAY_FLUSH
209	STATIC AV *	200	STATIC void
210	free_padlist (AV *padlist)	201	free_padlist (AV *padlist)
211	{	202	{
212	/* may be during global destruction */	203	/* may be during global destruction */
213	if (SvREFCNT(padlist))	204	if (SvREFCNT(padlist))
214	{	205	{
…		…
288		279
289	static void	280	static void
290	load_state(pTHX_ Coro__State c)	281	load_state(pTHX_ Coro__State c)
291	{	282	{
292	PL_dowarn = c->dowarn;	283	PL_dowarn = c->dowarn;
		284	PL_in_eval = c->in_eval;
293		285
294	PL_curstackinfo = c->curstackinfo;	286	PL_curstackinfo = c->curstackinfo;
295	PL_curstack = c->curstack;	287	PL_curstack = c->curstack;
296	PL_mainstack = c->mainstack;	288	PL_mainstack = c->mainstack;
297	PL_stack_sp = c->stack_sp;	289	PL_stack_sp = c->stack_sp;
…		…
314	PL_savestack_max = c->savestack_max;	306	PL_savestack_max = c->savestack_max;
315	PL_retstack = c->retstack;	307	PL_retstack = c->retstack;
316	PL_retstack_ix = c->retstack_ix;	308	PL_retstack_ix = c->retstack_ix;
317	PL_retstack_max = c->retstack_max;	309	PL_retstack_max = c->retstack_max;
318	PL_curcop = c->curcop;	310	PL_curcop = c->curcop;
319	PL_start_env = c->start_env;
320	PL_top_env = c->top_env;	311	PL_top_env = c->top_env;
321		312
322	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	313	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
323	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	314	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
324	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	315	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
423	/* but if it's missing the defav contents magically get replaced sometimes */	414	/* but if it's missing the defav contents magically get replaced sometimes */
424	if (c->defav)	415	if (c->defav)
425	av_reify (c->defav);	416	av_reify (c->defav);
426		417
427	c->dowarn = PL_dowarn;	418	c->dowarn = PL_dowarn;
		419	c->in_eval = PL_in_eval;
428		420
429	c->curstackinfo = PL_curstackinfo;	421	c->curstackinfo = PL_curstackinfo;
430	c->curstack = PL_curstack;	422	c->curstack = PL_curstack;
431	c->mainstack = PL_mainstack;	423	c->mainstack = PL_mainstack;
432	c->stack_sp = PL_stack_sp;	424	c->stack_sp = PL_stack_sp;
…		…
449	c->savestack_max = PL_savestack_max;	441	c->savestack_max = PL_savestack_max;
450	c->retstack = PL_retstack;	442	c->retstack = PL_retstack;
451	c->retstack_ix = PL_retstack_ix;	443	c->retstack_ix = PL_retstack_ix;
452	c->retstack_max = PL_retstack_max;	444	c->retstack_max = PL_retstack_max;
453	c->curcop = PL_curcop;	445	c->curcop = PL_curcop;
454	c->start_env = PL_start_env;
455	c->top_env = PL_top_env;	446	c->top_env = PL_top_env;
456	}	447	}
457		448
458	/*	449	/*
459	* allocate various perl stacks. This is an exact copy	450	* allocate various perl stacks. This is an exact copy
…		…
523	dSP;	514	dSP;
524	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
525	PUTBACK; /* possibly superfluous */	516	PUTBACK; /* possibly superfluous */
526	}	517	}
527		518
		519	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */
528	dounwind(-1);	520	dounwind(-1);
529		521
530	SvREFCNT_dec(PL_curstackinfo->si_stack);	522	SvREFCNT_dec(PL_curstackinfo->si_stack);
531	Safefree(PL_curstackinfo->si_cxstack);	523	Safefree(PL_curstackinfo->si_cxstack);
532	Safefree(PL_curstackinfo);	524	Safefree(PL_curstackinfo);
533	PL_curstackinfo = p;	525	PL_curstackinfo = p;
…		…
603	dSP;	595	dSP;
604	Coro__State ctx = (Coro__State)arg;	596	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	597	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
606		598
607	coro_init_stacks (aTHX);	599	coro_init_stacks (aTHX);
608	JMPENV_BOOTSTRAP;
609	SPAGAIN;
610
611	/PL_curcop = 0;/	600	/PL_curcop = 0;/
		601	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	602	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;	603	GvAV (PL_defgv) = ctx->args;
614		604
		605	SPAGAIN;
		606
615	if (ctx->stack)	607	if (ctx->stack)
616	{	608	{
617	ctx->cursp = 0;	609	ctx->cursp = 0;
618		610
619	PUSHMARK(SP);	611	PUSHMARK(SP);
620	PUTBACK;	612	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	613	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		614
		615	if (SvTRUE (ERRSV))
		616	croak (NULL);
		617	else
622	croak ("FATAL: CCTXT coroutine returned!");	618	croak ("FATAL: CCTXT coroutine returned!");
623	}	619	}
624	else	620	else
625	{	621	{
626	UNOP myop;	622	UNOP myop;
627		623
…		…
654	/*	650	/*
655	* this is a _very_ stripped down perl interpreter ;)	651	* this is a _very_ stripped down perl interpreter ;)
656	*/	652	*/
657	Coro__State ctx = (Coro__State)arg;	653	Coro__State ctx = (Coro__State)arg;
658		654
		655	/FIXME//* must set up top_env here */
659	ctx->cursp = 0;	656	ctx->cursp = 0;
660	PL_op = PL_op->op_next;	657	PL_op = PL_op->op_next;
661	CALLRUNOPS(aTHX);	658	CALLRUNOPS(aTHX);
662	/NORETURN/	659
663	abort ();	660	abort ();
664	}	661	}
665		662
666	STATIC void	663	STATIC void
667	transfer(pTHX_ struct coro prev, struct coro next, int flags)	664	transfer(pTHX_ struct coro prev, struct coro next, int flags)
…		…
741	}	738	}
742		739
743	next->cursp = stacklevel;	740	next->cursp = stacklevel;
744	}	741	}
745		742
		743	static struct coro *
		744	sv_to_coro (SV arg, const char funcname, const char *varname)
		745	{
		746	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
		747	{
		748	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);
		749
		750	if (!he)
		751	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
		752
		753	arg = HeVAL(he);
		754	}
		755
		756	/* must also be changed inside Coro::Cont::yield */
		757	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)
		758	return (struct coro ) SvIV((SV)SvRV(arg));
		759
		760	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);
		761	/NORETURN/
		762	}
		763
		764	static void
		765	api_transfer(pTHX_ SV prev, SV next, int flags)
		766	{
		767	transfer(aTHX_
		768	sv_to_coro (prev, "Coro::transfer", "prev"),
		769	sv_to_coro (next, "Coro::transfer", "next"),
		770	flags);
		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	static int coro_nready;
		786
		787	static void
		788	coro_enq (SV *sv)
		789	{
		790	if (SvROK (sv))
		791	{
		792	SV *hv = SvRV (sv);
		793	if (SvTYPE (hv) == SVt_PVHV)
		794	{
		795	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
		796	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		797
		798	prio = prio > PRIO_MAX ? PRIO_MAX
		799	: prio < PRIO_MIN ? PRIO_MIN
		800	: prio;
		801
		802	av_push (coro_ready [prio - PRIO_MIN], sv);
		803	coro_nready++;
		804
		805	return;
		806	}
		807	}
		808
		809	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		810	}
		811
		812	static SV *
		813	coro_deq (int min_prio)
		814	{
		815	int prio = PRIO_MAX - PRIO_MIN;
		816
		817	min_prio -= PRIO_MIN;
		818	if (min_prio < 0)
		819	min_prio = 0;
		820
		821	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		822	if (av_len (coro_ready[prio]) >= 0)
		823	{
		824	coro_nready--;
		825	return av_shift (coro_ready[prio]);
		826	}
		827
		828	return 0;
		829	}
		830
		831	static void
		832	api_ready (SV *coro)
		833	{
		834	coro_enq (SvREFCNT_inc (coro));
		835	}
		836
		837	static void
		838	api_schedule (int cede)
		839	{
		840	SV prev, next;
		841
		842	prev = GvSV (coro_current);
		843
		844	if (cede)
		845	coro_enq (SvREFCNT_inc (prev));
		846
		847	next = coro_deq (PRIO_MIN);
		848
		849	if (!next)
		850	next = SvREFCNT_inc (GvSV (coro_idle));
		851
		852	GvSV (coro_current) = SvREFCNT_inc (next);
		853	transfer (aTHX_
		854	sv_to_coro (prev, "Coro::schedule", "current coroutine"),
		855	sv_to_coro (next, "Coro::schedule", "next coroutine"),
		856	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		857	SvREFCNT_dec (next);
		858	SvREFCNT_dec (prev);
		859	}
		860
746	MODULE = Coro::State PACKAGE = Coro::State	861	MODULE = Coro::State PACKAGE = Coro::State
747		862
748	PROTOTYPES: ENABLE	863	PROTOTYPES: ENABLE
749		864
750	BOOT:	865	BOOT:
…		…
760		875
761	if (!padlist_cache)	876	if (!padlist_cache)
762	padlist_cache = newHV ();	877	padlist_cache = newHV ();
763		878
764	main_mainstack = PL_mainstack;	879	main_mainstack = PL_mainstack;
		880
		881	coroapi.ver = CORO_API_VERSION;
		882	coroapi.transfer = api_transfer;
765	}	883	}
766		884
767	Coro::State	885	Coro::State
768	_newprocess(args)	886	_newprocess(args)
769	SV * args	887	SV * args
…		…
783	RETVAL = coro;	901	RETVAL = coro;
784	OUTPUT:	902	OUTPUT:
785	RETVAL	903	RETVAL
786		904
787	void	905	void
788	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	906	transfer(prev, next, flags)
789	Coro::State_or_hashref prev	907	Coro::State_or_hashref prev
790	Coro::State_or_hashref next	908	Coro::State_or_hashref next
791	int flags	909	int flags
792	PROTOTYPE: @	910	PROTOTYPE: @
793	CODE:	911	CODE:
		912	PUTBACK;
794	transfer (aTHX_ prev, next, flags);	913	transfer (aTHX_ prev, next, flags);
		914	SPAGAIN;
795		915
796	void	916	void
797	DESTROY(coro)	917	DESTROY(coro)
798	Coro::State coro	918	Coro::State coro
799	CODE:	919	CODE:
…		…
821	CODE:	941	CODE:
822	#ifdef MAY_FLUSH	942	#ifdef MAY_FLUSH
823	flush_padlist_cache ();	943	flush_padlist_cache ();
824	#endif	944	#endif
825		945
		946	void
		947	_exit(code)
		948	int code
		949	PROTOTYPE: $
		950	CODE:
		951	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
		952	_exit (code);
		953	#else
		954	signal (SIGTERM, SIG_DFL);
		955	raise (SIGTERM);
		956	exit (code);
		957	#endif
		958
826	MODULE = Coro::State PACKAGE = Coro::Cont	959	MODULE = Coro::State PACKAGE = Coro::Cont
827		960
828	# this is slightly dirty	961	# this is slightly dirty (should expose a c-level api)
829		962
830	void	963	void
831	yield(...)	964	yield(...)
832	PROTOTYPE: @	965	PROTOTYPE: @
833	CODE:	966	CODE:
…		…
851	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	984	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
852	SvREFCNT_dec (sv);	985	SvREFCNT_dec (sv);
853		986
854	transfer(aTHX_ prev, next, 0);	987	transfer(aTHX_ prev, next, 0);
855		988
		989	MODULE = Coro::State PACKAGE = Coro
		990
		991	# this is slightly dirty (should expose a c-level api)
		992
		993	BOOT:
		994	{
		995	int i;
		996	HV *stash = gv_stashpv ("Coro", TRUE);
		997
		998	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		999	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1000	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1001	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1002	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1003	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1004
		1005	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1006	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1007
		1008	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1009	coro_ready[i] = newAV ();
		1010
		1011	{
		1012	SV *sv = perl_get_sv("Coro::API", 1);
		1013
		1014	coroapi.schedule = api_schedule;
		1015	coroapi.ready = api_ready;
		1016	coroapi.nready = &coro_nready;
		1017	coroapi.current = coro_current;
		1018
		1019	GCoroAPI = &coroapi;
		1020	sv_setiv(sv, (IV)&coroapi);
		1021	SvREADONLY_on(sv);
		1022	}
		1023	}
		1024
		1025	void
		1026	ready(self)
		1027	SV * self
		1028	CODE:
		1029	api_ready (self);
		1030
		1031	int
		1032	nready(...)
		1033	PROTOTYPE:
		1034	CODE:
		1035	RETVAL = coro_nready;
		1036	OUTPUT:
		1037	RETVAL
		1038
		1039	void
		1040	schedule(...)
		1041	PROTOTYPE:
		1042	ALIAS:
		1043	cede = 1
		1044	CODE:
		1045	api_schedule (ix);
		1046

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Comparing Coro/Coro/State.xs (file contents): Revision 1.18 by root, Thu Jul 26 03:46:15 2001 UTC vs. Revision 1.27 by root, Mon Aug 20 16:58:19 2001 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.18 by root, Thu Jul 26 03:46:15 2001 UTC vs.
Revision 1.27 by root, Mon Aug 20 16:58:19 2001 UTC