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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

…		…
29	# endif	29	# endif
30	#endif	30	#endif
31		31
32	#include <errno.h>	32	#include <errno.h>
33		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
		41
34	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
35	# include <unistd.h>	43	# include <unistd.h>
36	# include <sys/mman.h>	44	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
38	# ifdef MAP_ANON	46	# ifdef MAP_ANON
39	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
40	# else	48	# else
41	# undef HAVE_MMAP	49	# undef HAVE_MMAP
42	# endif	50	# endif
43	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
44	#endif	59	# endif
		60	#endif
45		61
46	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		63
49	/* The next macro should declare a variable stacklevel that contains and approximation	64	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	65	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	66	* and should be unique. */
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
66	# define UNLOCK (void)0	81	# define UNLOCK (void)0
67	#endif	82	#endif
68		83
69	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
75		88
76	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not only the c stack but also c registers etc... */
77	typedef struct {	90	typedef struct {
78	int refcnt; /* pointer reference counter */	91	int refcnt; /* pointer reference counter */
…		…
84	void *sptr;	97	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	98	long ssize; /* positive == mmap, otherwise malloc */
86	} coro_stack;	99	} coro_stack;
87		100
88	struct coro {	101	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
90	JMPENV start_env;
91
92	/* the optional C context */	102	/* the optional C context */
93	coro_stack *stack;	103	coro_stack *stack;
94	void *cursp;	104	void *cursp;
95	int gencnt;	105	int gencnt;
96		106
…		…
132	I32 retstack_max;	142	I32 retstack_max;
133	PMOP *curpm;	143	PMOP *curpm;
134	COP *curcop;	144	COP *curcop;
135	JMPENV *top_env;	145	JMPENV *top_env;
136		146
		147	/* coro process data */
		148	int prio;
		149
137	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
138	AV *args;	151	AV *args;
		152	int refcnt;
139	};	153	};
140		154
141	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
142	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
143		157
144	/* mostly copied from op.c:cv_clone2 */	158	static AV *
145	STATIC AV *	159	coro_clone_padlist (pTHX_ CV *cv)
146	clone_padlist (pTHX_ AV *protopadlist)
147	{	160	{
148	AV *av;	161	AV *padlist = CvPADLIST (cv);
149	I32 ix;
150	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
151	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
152	SV **pname = AvARRAY (protopad_name);
153	SV **ppad = AvARRAY (protopad);
154	I32 fname = AvFILLp (protopad_name);
155	I32 fpad = AvFILLp (protopad);
156	AV newpadlist, newpad_name, *newpad;	162	AV newpadlist, newpad;
157	SV **npad;
158
159	newpad_name = newAV ();
160	for (ix = fname; ix >= 0; ix--)
161	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
162
163	newpad = newAV ();
164	av_fill (newpad, AvFILLp (protopad));
165	npad = AvARRAY (newpad);
166		163
167	newpadlist = newAV ();	164	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
169	av_store (newpadlist, 0, (SV *) newpad_name);	166	#if PERL_VERSION < 9
		167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
		171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		172	--AvFILLp (padlist);
		173
		174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
170	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
171
172	av = newAV (); /* will be @_ */
173	av_extend (av, 0);
174	av_store (newpad, 0, (SV *) av);
175	AvREIFY_on (av);
176
177	for (ix = fpad; ix > 0; ix--)
178	{
179	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
180
181	if (namesv && namesv != &PL_sv_undef)
182	{
183	char name = SvPVX (namesv); / XXX */
184
185	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
186	{ /* lexical from outside? */
187	npad[ix] = SvREFCNT_inc (ppad[ix]);
188	}
189	else
190	{ /* our own lexical */
191	SV *sv;
192	if (*name == '&')
193	sv = SvREFCNT_inc (ppad[ix]);
194	else if (*name == '@')
195	sv = (SV *) newAV ();
196	else if (*name == '%')
197	sv = (SV *) newHV ();
198	else
199	sv = NEWSV (0, 0);
200
201	#ifdef SvPADBUSY
202	if (!SvPADBUSY (sv))
203	#endif
204	SvPADMY_on (sv);
205
206	npad[ix] = sv;
207	}
208	}
209	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
210	{
211	npad[ix] = SvREFCNT_inc (ppad[ix]);
212	}
213	else
214	{
215	SV *sv = NEWSV (0, 0);
216	SvPADTMP_on (sv);
217	npad[ix] = sv;
218	}
219	}
220
221	#if 0 /* return -ENOTUNDERSTOOD */
222	/* Now that vars are all in place, clone nested closures. */
223
224	for (ix = fpad; ix > 0; ix--) {
225	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
226	if (namesv
227	&& namesv != &PL_sv_undef
228	&& !(SvFLAGS(namesv) & SVf_FAKE)
229	&& *SvPVX(namesv) == '&'
230	&& CvCLONE(ppad[ix]))
231	{
232	CV kid = cv_clone((CV)ppad[ix]);
233	SvREFCNT_dec(ppad[ix]);
234	CvCLONE_on(kid);
235	SvPADMY_on(kid);
236	npad[ix] = (SV*)kid;
237	}
238	}
239	#endif
240		176
241	return newpadlist;	177	return newpadlist;
242	}	178	}
243		179
244	STATIC void	180	static void
245	free_padlist (pTHX_ AV *padlist)	181	free_padlist (pTHX_ AV *padlist)
246	{	182	{
247	/* may be during global destruction */	183	/* may be during global destruction */
248	if (SvREFCNT (padlist))	184	if (SvREFCNT (padlist))
249	{	185	{
…		…
263		199
264	SvREFCNT_dec ((SV*)padlist);	200	SvREFCNT_dec ((SV*)padlist);
265	}	201	}
266	}	202	}
267		203
268	STATIC int	204	static int
269	coro_cv_free (pTHX_ SV sv, MAGIC mg)	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
270	{	206	{
271	AV *padlist;	207	AV *padlist;
272	AV av = (AV )mg->mg_obj;	208	AV av = (AV )mg->mg_obj;
273		209
…		…
283	#define PERL_MAGIC_coro PERL_MAGIC_ext	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
284		220
285	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
286		222
287	/* the next two functions merely cache the padlists */	223	/* the next two functions merely cache the padlists */
288	STATIC void	224	static void
289	get_padlist (pTHX_ CV *cv)	225	get_padlist (pTHX_ CV *cv)
290	{	226	{
291	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
292		228
293	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
294	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
295	else	231	else
		232	{
		233	#if 0
		234	/* this should work - but it doesn't :( */
		235	CV *cp = Perl_cv_clone (aTHX_ cv);
		236	CvPADLIST (cv) = CvPADLIST (cp);
		237	CvPADLIST (cp) = 0;
		238	SvREFCNT_dec (cp);
		239	#else
296	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
297	}	243	}
298		244
299	STATIC void	245	static void
300	put_padlist (pTHX_ CV *cv)	246	put_padlist (pTHX_ CV *cv)
301	{	247	{
302	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
303		249
304	if (!mg)	250	if (!mg)
…		…
421	}	367	}
422		368
423	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
424	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
425		371
426	get_padlist (aTHX_ cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
427	}	373	}
428	}	374	}
429	#ifdef CXt_FORMAT	375	#ifdef CXt_FORMAT
430	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
431	{	377	{
…		…
491	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
492	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
493	* on the (sometimes correct) assumption that coroutines do	439	* on the (sometimes correct) assumption that coroutines do
494	* not usually need a lot of stackspace.	440	* not usually need a lot of stackspace.
495	*/	441	*/
496	STATIC void	442	static void
497	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
498	{	444	{
499	LOCK;	445	LOCK;
500		446
501	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
538	}	484	}
539		485
540	/*	486	/*
541	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
542	*/	488	*/
543	STATIC void	489	static void
544	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
545	{	491	{
546	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
547	{	493	{
548	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
…		…
599	stack->gencnt = ctx->gencnt = 0;	545	stack->gencnt = ctx->gencnt = 0;
600		546
601	if (alloc)	547	if (alloc)
602	{	548	{
603	#if HAVE_MMAP	549	#if HAVE_MMAP
604	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */	550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
605	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
606	if (stack->sptr == (void *)-1)	552	if (stack->sptr != (void *)-1)
		553	{
		554	# if STACKGUARD
		555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		556	# endif
		557	}
		558	else
607	#endif	559	#endif
608	{	560	{
609	stack->ssize = - (STACKSIZE * (long)sizeof (long));	561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
610	New (0, stack->sptr, STACKSIZE, long);	562	New (0, stack->sptr, STACKSIZE, long);
611	}	563	}
…		…
675	}	627	}
676	else	628	else
677	{	629	{
678	UNOP myop;	630	UNOP myop;
679		631
680	PL_op = (OP *)&myop;
681
682	Zero(&myop, 1, UNOP);	632	Zero(&myop, 1, UNOP);
683	myop.op_next = Nullop;	633	myop.op_next = Nullop;
684	myop.op_flags = OPf_WANT_VOID;	634	myop.op_flags = OPf_WANT_VOID;
		635
		636	PL_op = (OP *)&myop;
685		637
686	PUSHMARK(SP);	638	PUSHMARK(SP);
687	XPUSHs (sub_init);	639	XPUSHs (sub_init);
688	/*	640	/*
689	* the next line is slightly wrong, as PL_op->op_next	641	* the next line is slightly wrong, as PL_op->op_next
…		…
707	* this is a _very_ stripped down perl interpreter ;)	659	* this is a _very_ stripped down perl interpreter ;)
708	*/	660	*/
709	dTHX;	661	dTHX;
710	Coro__State ctx = (Coro__State)arg;	662	Coro__State ctx = (Coro__State)arg;
711		663
712	PL_top_env = &ctx->start_env;	664	PL_top_env = &PL_start_env;
713		665
714	ctx->cursp = 0;	666	ctx->cursp = 0;
715	PL_op = PL_op->op_next;	667	PL_op = PL_op->op_next;
716	CALLRUNOPS(aTHX);	668	CALLRUNOPS(aTHX);
717		669
718	abort ();	670	abort ();
719	}	671	}
720		672
721	STATIC void	673	/* never call directly, always through the coro_state_transfer global variable */
		674	static void
722	transfer (pTHX_ struct coro prev, struct coro next, int flags)	675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
723	{	676	{
724	dSTACKLEVEL;	677	dSTACKLEVEL;
725		678
726	if (prev != next)	679	if (prev != next)
727	{	680	{
		681	/* has this coro been created yet? */
728	if (next->mainstack)	682	if (next->mainstack)
729	{	683	{
730	LOCK;	684	LOCK;
731	SAVE (prev, flags);	685	SAVE (prev, flags);
732	LOAD (next);	686	LOAD (next);
…		…
771	{	725	{
772	LOCK;	726	LOCK;
773	SAVE (prev, -1); /* first get rid of the old state */	727	SAVE (prev, -1); /* first get rid of the old state */
774	UNLOCK;	728	UNLOCK;
775		729
		730	/* create the coroutine for the first time */
776	if (flags & TRANSFER_SAVE_CCTXT)	731	if (flags & TRANSFER_SAVE_CCTXT)
777	{	732	{
778	if (!prev->stack)	733	if (!prev->stack)
779	allocate_stack (prev, 0);	734	allocate_stack (prev, 0);
780		735
		736	/* the new coroutine starts with start_env again */
		737	PL_top_env = &PL_start_env;
		738
781	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
782	{	740	{
783	PL_top_env = &next->start_env;
784
785	setup_coro (next);	741	setup_coro (next);
786	next->cursp = stacklevel;	742	next->cursp = stacklevel;
787		743
788	prev->stack->refcnt++;	744	prev->stack->refcnt++;
789	prev->stack->usecnt++;	745	prev->stack->usecnt++;
…		…
817	coro_mortal = 0;	773	coro_mortal = 0;
818	}	774	}
819	UNLOCK;	775	UNLOCK;
820	}	776	}
821		777
822	#define SV_CORO(sv,func) \	778	/* use this function pointer to call the above function */
823	do { \	779	/* this is done to increase chances of the compiler not inlining the call */
824	if (SvROK (sv)) \	780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
825	sv = SvRV (sv); \
826	\
827	if (SvTYPE (sv) == SVt_PVHV) \
828	{ \
829	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
830	\
831	if (!he) \
832	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
833	\
834	(sv) = SvRV (HeVAL(he)); \
835	} \
836	\
837	/* must also be changed inside Coro::Cont::yield */ \
838	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
839	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
840	\
841	} while(0)
842		781
843	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	782	static void
		783	coro_state_destroy (struct coro *coro)
		784	{
		785	if (coro->refcnt--)
		786	return;
844		787
		788	if (coro->mainstack && coro->mainstack != main_mainstack)
		789	{
		790	struct coro temp;
		791
		792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		793	LOAD (aTHX_ coro);
		794
		795	destroy_stacks (aTHX);
		796
		797	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		798
		799	coro->mainstack = 0;
		800	}
		801
		802	deallocate_stack (coro);
		803	SvREFCNT_dec (coro->args);
		804	Safefree (coro);
		805	}
		806
845	static void	807	static int
		808	coro_state_clear (SV sv, MAGIC mg)
		809	{
		810	struct coro coro = (struct coro )mg->mg_ptr;
		811	mg->mg_ptr = 0;
		812
		813	coro_state_destroy (coro);
		814
		815	return 0;
		816	}
		817
		818	static int
		819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		820	{
		821	struct coro coro = (struct coro )mg->mg_ptr;
		822
		823	++coro->refcnt;
		824
		825	return 0;
		826	}
		827
		828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		829
		830	static struct coro *
		831	SvSTATE (SV *coro)
		832	{
		833	HV *stash;
		834	MAGIC *mg;
		835
		836	if (SvROK (coro))
		837	coro = SvRV (coro);
		838
		839	stash = SvSTASH (coro);
		840	if (stash != coro_stash && stash != coro_state_stash)
		841	{
		842	/* very slow, but rare, check */
		843	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		844	croak ("Coro::State object required");
		845	}
		846
		847	mg = SvMAGIC (coro);
		848	assert (mg->mg_type == PERL_MAGIC_ext);
		849	return (struct coro *)mg->mg_ptr;
		850	}
		851
		852	static void
846	api_transfer(pTHX_ SV prev, SV next, int flags)	853	api_transfer (pTHX_ SV prev, SV next, int flags)
847	{	854	{
848	SV_CORO (prev, "Coro::transfer");
849	SV_CORO (next, "Coro::transfer");
850
851	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
852	}	856	}
853		857
854	/ Coro ******************************************************************/	858	/ Coro ******************************************************************/
855		859
856	#define PRIO_MAX 3	860	#define PRIO_MAX 3
…		…
860	#define PRIO_IDLE -3	864	#define PRIO_IDLE -3
861	#define PRIO_MIN -4	865	#define PRIO_MIN -4
862		866
863	/* for Coro.pm */	867	/* for Coro.pm */
864	static GV coro_current, coro_idle;	868	static GV coro_current, coro_idle;
865	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
866	static int coro_nready;	870	static int coro_nready;
867		871
868	static void	872	static void
869	coro_enq (pTHX_ SV *sv)	873	coro_enq (pTHX_ SV *sv)
870	{	874	{
871	SV **xprio;
872	int prio;	875	int prio;
873		876
874	if (SvTYPE (sv) != SVt_PVHV)	877	if (SvTYPE (sv) != SVt_PVHV)
875	croak ("Coro::ready tried to enqueue something that is not a coroutine");	878	croak ("Coro::ready tried to enqueue something that is not a coroutine");
876		879
877	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	880	prio = SvSTATE (sv)->prio;
878	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
879
880	prio = prio > PRIO_MAX ? PRIO_MAX
881	: prio < PRIO_MIN ? PRIO_MIN
882	: prio;
883		881
884	av_push (coro_ready [prio - PRIO_MIN], sv);	882	av_push (coro_ready [prio - PRIO_MIN], sv);
885	coro_nready++;	883	coro_nready++;
886	}	884	}
887		885
…		…
893	min_prio -= PRIO_MIN;	891	min_prio -= PRIO_MIN;
894	if (min_prio < 0)	892	if (min_prio < 0)
895	min_prio = 0;	893	min_prio = 0;
896		894
897	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
898	if (av_len (coro_ready[prio]) >= 0)	896	if (AvFILLp (coro_ready [prio]) >= 0)
899	{	897	{
900	coro_nready--;	898	coro_nready--;
901	return av_shift (coro_ready[prio]);	899	return av_shift (coro_ready [prio]);
902	}	900	}
903		901
904	return 0;	902	return 0;
905	}	903	}
906		904
…		…
921	api_schedule (void)	919	api_schedule (void)
922	{	920	{
923	dTHX;	921	dTHX;
924		922
925	SV prev, next;	923	SV prev, next;
		924	SV *current = GvSV (coro_current);
926		925
		926	for (;;)
		927	{
927	LOCK;	928	LOCK;
928		929
929	prev = SvRV (GvSV (coro_current));
930	next = coro_deq (aTHX_ PRIO_MIN);	930	next = coro_deq (aTHX_ PRIO_MIN);
931		931
932	if (!next)	932	if (next)
933	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	933	break;
		934
		935	UNLOCK;
		936
		937	{
		938	dSP;
		939
		940	ENTER;
		941	SAVETMPS;
		942
		943	PUSHMARK (SP);
		944	PUTBACK;
		945	call_sv (GvSV (coro_idle), G_DISCARD);
		946
		947	FREETMPS;
		948	LEAVE;
		949	}
		950	}
		951
		952	prev = SvRV (current);
		953	SvRV (current) = next;
934		954
935	/* free this only after the transfer */	955	/* free this only after the transfer */
936	coro_mortal = prev;	956	coro_mortal = prev;
937	SV_CORO (prev, "Coro::schedule");
938
939	SvRV (GvSV (coro_current)) = next;
940
941	SV_CORO (next, "Coro::schedule");
942		957
943	UNLOCK;	958	UNLOCK;
944		959
945	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
946	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
947	}	962	}
948		963
949	static void	964	static void
950	api_cede (void)	965	api_cede (void)
951	{	966	{
…		…
958	api_schedule ();	973	api_schedule ();
959	}	974	}
960		975
961	MODULE = Coro::State PACKAGE = Coro::State	976	MODULE = Coro::State PACKAGE = Coro::State
962		977
963	PROTOTYPES: ENABLE	978	PROTOTYPES: DISABLE
964		979
965	BOOT:	980	BOOT:
966	{ /* {} necessary for stoopid perl-5.6.x */	981	{
967	#ifdef USE_ITHREADS	982	#ifdef USE_ITHREADS
968	MUTEX_INIT (&coro_mutex);	983	MUTEX_INIT (&coro_mutex);
969	#endif	984	#endif
		985	BOOT_PAGESIZE;
970		986
971	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
972	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
973	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
974		988
975	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
976	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
977	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
…		…
979		993
980	main_mainstack = PL_mainstack;	994	main_mainstack = PL_mainstack;
981		995
982	coroapi.ver = CORO_API_VERSION;	996	coroapi.ver = CORO_API_VERSION;
983	coroapi.transfer = api_transfer;	997	coroapi.transfer = api_transfer;
984	}
985		998
986	Coro::State	999	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
987	_newprocess(args)	1000	}
988	SV * args	1001
989	PROTOTYPE: $	1002	SV *
		1003	new (char *klass, ...)
990	CODE:	1004	CODE:
991	Coro__State coro;	1005	{
		1006	struct coro *coro;
		1007	HV *hv;
		1008	int i;
992		1009
993	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
994	croak ("Coro::State::_newprocess expects an arrayref");
995
996	Newz (0, coro, 1, struct coro);	1010	Newz (0, coro, 1, struct coro);
		1011	coro->args = newAV ();
997		1012
998	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1013	for (i = 1; i < items; i++)
		1014	av_push (coro->args, newSVsv (ST (i)));
		1015
999	/coro->mainstack = 0; //actual work is done inside transfer /	1016	/coro->mainstack = 0; //actual work is done inside transfer /
1000	/coro->stack = 0;/	1017	/coro->stack = 0;/
1001		1018
1002	/* same as JMPENV_BOOTSTRAP */	1019	hv = newHV ();
1003	/* we might be able to recycle start_env, but safe is safe */	1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1004	/Zero(&coro->start_env, 1, JMPENV);/	1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1005	coro->start_env.je_ret = -1;	1022	}
1006	coro->start_env.je_mustcatch = TRUE;
1007
1008	RETVAL = coro;
1009	OUTPUT:	1023	OUTPUT:
1010	RETVAL	1024	RETVAL
1011		1025
1012	void	1026	void
1013	transfer(prev, next, flags)	1027	transfer(prev, next, flags)
1014	SV *prev	1028	SV *prev
1015	SV *next	1029	SV *next
1016	int flags	1030	int flags
1017	PROTOTYPE: @
1018	CODE:	1031	CODE:
1019	PUTBACK;	1032	PUTBACK;
1020	SV_CORO (next, "Coro::transfer");
1021	SV_CORO (prev, "Coro::transfer");
1022	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1023	SPAGAIN;	1034	SPAGAIN;
1024		1035
		1036	int
		1037	prio (Coro::State coro, int newprio = 0)
		1038	ALIAS:
		1039	nice = 1
		1040	CODE:
		1041	{
		1042	RETVAL = coro->prio;
		1043
		1044	if (items > 1)
		1045	{
		1046	if (ix)
		1047	newprio += coro->prio;
		1048
		1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1051
		1052	coro->prio = newprio;
		1053	}
		1054	}
		1055
1025	void	1056	void
1026	DESTROY(coro)	1057	_clone_state_from (SV dst, SV src)
1027	Coro::State coro	1058	CODE:
1028	CODE:	1059	{
		1060	struct coro *coro_src = SvSTATE (src);
1029		1061
1030	if (coro->mainstack && coro->mainstack != main_mainstack)	1062	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1031	{
1032	struct coro temp;
1033		1063
1034	PUTBACK;	1064	++coro_src->refcnt;
1035	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1065	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1036	LOAD (aTHX_ coro);	1066	}
1037	SPAGAIN;
1038
1039	destroy_stacks (aTHX);
1040
1041	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1042	SPAGAIN;
1043
1044	coro->mainstack = 0;
1045	}
1046
1047	deallocate_stack (coro);
1048	SvREFCNT_dec (coro->args);
1049	Safefree (coro);
1050		1067
1051	void	1068	void
1052	_exit(code)	1069	_exit (code)
1053	int code	1070	int code
1054	PROTOTYPE: $	1071	PROTOTYPE: $
1055	CODE:	1072	CODE:
1056	_exit (code);	1073	_exit (code);
1057		1074
1058	MODULE = Coro::State PACKAGE = Coro::Cont	1075	MODULE = Coro::State PACKAGE = Coro::Cont
1059		1076
1060	# this is slightly dirty (should expose a c-level api)
1061
1062	void	1077	void
1063	yield(...)	1078	yield (...)
1064	PROTOTYPE: @	1079	PROTOTYPE: @
1065	CODE:	1080	CODE:
		1081	{
1066	SV *yieldstack;	1082	SV *yieldstack;
1067	SV *sv;	1083	SV *sv;
1068	AV *defav = GvAV (PL_defgv);	1084	AV *defav = GvAV (PL_defgv);
1069	struct coro prev, next;	1085	struct coro prev, next;
1070		1086
…		…
1079	av_fill (defav, items - 1);	1095	av_fill (defav, items - 1);
1080	while (items--)	1096	while (items--)
1081	av_store (defav, items, SvREFCNT_inc (ST(items)));	1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1082		1098
1083	sv = av_pop ((AV *)SvRV (yieldstack));	1099	sv = av_pop ((AV *)SvRV (yieldstack));
1084	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));	1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1085	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));	1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1086	SvREFCNT_dec (sv);	1102	SvREFCNT_dec (sv);
1087		1103
1088	transfer (aTHX_ prev, next, 0);	1104	coro_state_transfer (aTHX_ prev, next, 0);
		1105	}
1089		1106
1090	MODULE = Coro::State PACKAGE = Coro	1107	MODULE = Coro::State PACKAGE = Coro
1091		1108
1092	# this is slightly dirty (should expose a c-level api)
1093
1094	BOOT:	1109	BOOT:
1095	{	1110	{
1096	int i;	1111	int i;
		1112
1097	HV *stash = gv_stashpv ("Coro", TRUE);	1113	coro_stash = gv_stashpv ("Coro", TRUE);
1098		1114
1099	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1115	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1100	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1116	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1101	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1117	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1102	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1118	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1103	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1119	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1104	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1120	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1105		1121
1106	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1122	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1107	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1123	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1108		1124
1109	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1125	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1117	coroapi.ready = api_ready;	1133	coroapi.ready = api_ready;
1118	coroapi.nready = &coro_nready;	1134	coroapi.nready = &coro_nready;
1119	coroapi.current = coro_current;	1135	coroapi.current = coro_current;
1120		1136
1121	GCoroAPI = &coroapi;	1137	GCoroAPI = &coroapi;
1122	sv_setiv(sv, (IV)&coroapi);	1138	sv_setiv (sv, (IV)&coroapi);
1123	SvREADONLY_on(sv);	1139	SvREADONLY_on (sv);
1124	}	1140	}
1125	}	1141	}
1126		1142
1127	#if !PERL_MICRO	1143	#if !PERL_MICRO
1128		1144
1129	void	1145	void
1130	ready(self)	1146	ready (self)
1131	SV * self	1147	SV * self
1132	PROTOTYPE: $	1148	PROTOTYPE: $
1133	CODE:	1149	CODE:
1134	api_ready (self);	1150	api_ready (self);
1135		1151
1136	#endif	1152	#endif
1137		1153
1138	int	1154	int
1139	nready(...)	1155	nready (...)
1140	PROTOTYPE:	1156	PROTOTYPE:
1141	CODE:	1157	CODE:
1142	RETVAL = coro_nready;	1158	RETVAL = coro_nready;
1143	OUTPUT:	1159	OUTPUT:
1144	RETVAL	1160	RETVAL
1145		1161
1146	void	1162	void
1147	schedule(...)	1163	schedule (...)
1148	PROTOTYPE:	1164	PROTOTYPE:
1149	CODE:	1165	CODE:
1150	api_schedule ();	1166	api_schedule ();
1151		1167
1152	void	1168	void
1153	cede(...)	1169	cede (...)
1154	PROTOTYPE:	1170	PROTOTYPE:
1155	CODE:	1171	CODE:
1156	api_cede ();	1172	api_cede ();
1157		1173
1158	# and these are hacks	1174	# and these are hacks

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Comparing Coro/Coro/State.xs (file contents): Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs. Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC