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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.74 by root, Mon Oct 23 22:49:09 2006 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

…		…
28	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
29	# endif	29	# endif
30	#endif	30	#endif
31		31
32	#include <errno.h>	32	#include <errno.h>
33	#include <signal.h>	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
34		41
35	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
36	# include <unistd.h>	43	# include <unistd.h>
37	# include <sys/mman.h>	44	# include <sys/mman.h>
38	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
…		…
40	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
41	# else	48	# else
42	# undef HAVE_MMAP	49	# undef HAVE_MMAP
43	# endif	50	# endif
44	# 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
45	#endif	59	# endif
		60	#endif
46		61
47	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
48	#define UCORO_STATE "_coro_state"
49		63
50	/* 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
51	* 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
52	* and should be unique. */	66	* and should be unique. */
53	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
67	# define UNLOCK (void)0	81	# define UNLOCK (void)0
68	#endif	82	#endif
69		83
70	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
71	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
72	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
73	static SV *ucoro_state_sv;
74	static U32 ucoro_state_hash;
75	static SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
76		88
77	/* 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... */
78	typedef struct {	90	typedef struct {
79	int refcnt; /* pointer reference counter */	91	int refcnt; /* pointer reference counter */
…		…
85	void *sptr;	97	void *sptr;
86	long ssize; /* positive == mmap, otherwise malloc */	98	long ssize; /* positive == mmap, otherwise malloc */
87	} coro_stack;	99	} coro_stack;
88		100
89	struct coro {	101	struct coro {
90	/* the top-level JMPENV for each coroutine, needed to catch dies. */
91	JMPENV start_env;
92
93	/* the optional C context */	102	/* the optional C context */
94	coro_stack *stack;	103	coro_stack *stack;
95	void *cursp;	104	void *cursp;
96	int gencnt;	105	int gencnt;
97		106
…		…
133	I32 retstack_max;	142	I32 retstack_max;
134	PMOP *curpm;	143	PMOP *curpm;
135	COP *curcop;	144	COP *curcop;
136	JMPENV *top_env;	145	JMPENV *top_env;
137		146
		147	/* coro process data */
		148	int prio;
		149
138	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
139	AV *args;	151	AV *args;
		152	int refcnt;
140	};	153	};
141		154
142	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
143	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
144		157
145	/* mostly copied from op.c:cv_clone2 */	158	static AV *
146	STATIC AV *	159	coro_clone_padlist (pTHX_ CV *cv)
147	clone_padlist (pTHX_ AV *protopadlist)
148	{	160	{
149	AV *av;	161	AV *padlist = CvPADLIST (cv);
150	I32 ix;
151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
153	SV **pname = AvARRAY (protopad_name);
154	SV **ppad = AvARRAY (protopad);
155	I32 fname = AvFILLp (protopad_name);
156	I32 fpad = AvFILLp (protopad);
157	AV newpadlist, newpad_name, *newpad;	162	AV newpadlist, newpad;
158	SV **npad;
159
160	newpad_name = newAV ();
161	for (ix = fname; ix >= 0; ix--)
162	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
163
164	newpad = newAV ();
165	av_fill (newpad, AvFILLp (protopad));
166	npad = AvARRAY (newpad);
167		163
168	newpadlist = newAV ();	164	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
170	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)));
171	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
172
173	av = newAV (); /* will be @_ */
174	av_extend (av, 0);
175	av_store (newpad, 0, (SV *) av);
176	AvREIFY_on (av);
177
178	for (ix = fpad; ix > 0; ix--)
179	{
180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
181
182	if (namesv && namesv != &PL_sv_undef)
183	{
184	char name = SvPVX (namesv); / XXX */
185
186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
187	{ /* lexical from outside? */
188	npad[ix] = SvREFCNT_inc (ppad[ix]);
189	}
190	else
191	{ /* our own lexical */
192	SV *sv;
193	if (*name == '&')
194	sv = SvREFCNT_inc (ppad[ix]);
195	else if (*name == '@')
196	sv = (SV *) newAV ();
197	else if (*name == '%')
198	sv = (SV *) newHV ();
199	else
200	sv = NEWSV (0, 0);
201
202	#ifdef SvPADBUSY
203	if (!SvPADBUSY (sv))
204	#endif
205	SvPADMY_on (sv);
206
207	npad[ix] = sv;
208	}
209	}
210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
211	{
212	npad[ix] = SvREFCNT_inc (ppad[ix]);
213	}
214	else
215	{
216	SV *sv = NEWSV (0, 0);
217	SvPADTMP_on (sv);
218	npad[ix] = sv;
219	}
220	}
221
222	#if 0 /* return -ENOTUNDERSTOOD */
223	/* Now that vars are all in place, clone nested closures. */
224
225	for (ix = fpad; ix > 0; ix--) {
226	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
227	if (namesv
228	&& namesv != &PL_sv_undef
229	&& !(SvFLAGS(namesv) & SVf_FAKE)
230	&& *SvPVX(namesv) == '&'
231	&& CvCLONE(ppad[ix]))
232	{
233	CV kid = cv_clone((CV)ppad[ix]);
234	SvREFCNT_dec(ppad[ix]);
235	CvCLONE_on(kid);
236	SvPADMY_on(kid);
237	npad[ix] = (SV*)kid;
238	}
239	}
240	#endif
241		176
242	return newpadlist;	177	return newpadlist;
243	}	178	}
244		179
245	STATIC void	180	static void
246	free_padlist (pTHX_ AV *padlist)	181	free_padlist (pTHX_ AV *padlist)
247	{	182	{
248	/* may be during global destruction */	183	/* may be during global destruction */
249	if (SvREFCNT (padlist))	184	if (SvREFCNT (padlist))
250	{	185	{
…		…
264		199
265	SvREFCNT_dec ((SV*)padlist);	200	SvREFCNT_dec ((SV*)padlist);
266	}	201	}
267	}	202	}
268		203
269	STATIC int	204	static int
270	coro_cv_free (pTHX_ SV sv, MAGIC mg)	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
271	{	206	{
272	AV *padlist;	207	AV *padlist;
273	AV av = (AV )mg->mg_obj;	208	AV av = (AV )mg->mg_obj;
274		209
275	/* casting is fun. */	210	/* casting is fun. */
276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
277	free_padlist (aTHX_ padlist);	212	free_padlist (aTHX_ padlist);
278		213
279	SvREFCNT_dec (av);	214	SvREFCNT_dec (av);
		215
		216	return 0;
280	}	217	}
281		218
282	#define PERL_MAGIC_coro PERL_MAGIC_ext	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
283		220
284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
285		222
286	/* the next two functions merely cache the padlists */	223	/* the next two functions merely cache the padlists */
287	STATIC void	224	static void
288	get_padlist (pTHX_ CV *cv)	225	get_padlist (pTHX_ CV *cv)
289	{	226	{
290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
291		228
292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
294	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
295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
296	}	243	}
297		244
298	STATIC void	245	static void
299	put_padlist (pTHX_ CV *cv)	246	put_padlist (pTHX_ CV *cv)
300	{	247	{
301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
302		249
303	if (!mg)	250	if (!mg)
…		…
420	}	367	}
421		368
422	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
423	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
424		371
425	get_padlist (aTHX_ cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
426	}	373	}
427	}	374	}
428	#ifdef CXt_FORMAT	375	#ifdef CXt_FORMAT
429	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
430	{	377	{
…		…
490	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
492	* on the (sometimes correct) assumption that coroutines do	439	* on the (sometimes correct) assumption that coroutines do
493	* not usually need a lot of stackspace.	440	* not usually need a lot of stackspace.
494	*/	441	*/
495	STATIC void	442	static void
496	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
497	{	444	{
498	LOCK;	445	LOCK;
499		446
500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
537	}	484	}
538		485
539	/*	486	/*
540	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
541	*/	488	*/
542	STATIC void	489	static void
543	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
544	{	491	{
545	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
546	{	493	{
547	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
…		…
598	stack->gencnt = ctx->gencnt = 0;	545	stack->gencnt = ctx->gencnt = 0;
599		546
600	if (alloc)	547	if (alloc)
601	{	548	{
602	#if HAVE_MMAP	549	#if HAVE_MMAP
603	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 */
604	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);
605	if (stack->sptr == (void *)-1)	552	if (stack->sptr != (void *)-1)
606	#endif
607	{	553	{
608	/FIXME//D//* reasonable stack size! */	554	# if STACKGUARD
		555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		556	# endif
		557	}
		558	else
		559	#endif
		560	{
609	stack->ssize = - (STACKSIZE * 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	}
612	}	564	}
613	else	565	else
614	stack->sptr = 0;	566	stack->sptr = 0;
…		…
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
…		…
706	/*	658	/*
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	JMPENV coro_start_env;
712		663
713	PL_top_env = &ctx->start_env;	664	PL_top_env = &PL_start_env;
714		665
715	ctx->cursp = 0;	666	ctx->cursp = 0;
716	PL_op = PL_op->op_next;	667	PL_op = PL_op->op_next;
717	CALLRUNOPS(aTHX);	668	CALLRUNOPS(aTHX);
718		669
719	abort ();	670	abort ();
720	}	671	}
721		672
722	STATIC void	673	/* never call directly, always through the coro_state_transfer global variable */
		674	static void
723	transfer (pTHX_ struct coro prev, struct coro next, int flags)	675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
724	{	676	{
725	dSTACKLEVEL;	677	dSTACKLEVEL;
726		678
727	if (prev != next)	679	if (prev != next)
728	{	680	{
		681	/* has this coro been created yet? */
729	if (next->mainstack)	682	if (next->mainstack)
730	{	683	{
731	LOCK;	684	LOCK;
732	SAVE (prev, flags);	685	SAVE (prev, flags);
733	LOAD (next);	686	LOAD (next);
…		…
772	{	725	{
773	LOCK;	726	LOCK;
774	SAVE (prev, -1); /* first get rid of the old state */	727	SAVE (prev, -1); /* first get rid of the old state */
775	UNLOCK;	728	UNLOCK;
776		729
		730	/* create the coroutine for the first time */
777	if (flags & TRANSFER_SAVE_CCTXT)	731	if (flags & TRANSFER_SAVE_CCTXT)
778	{	732	{
779	if (!prev->stack)	733	if (!prev->stack)
780	allocate_stack (prev, 0);	734	allocate_stack (prev, 0);
781		735
		736	/* the new coroutine starts with start_env again */
		737	PL_top_env = &PL_start_env;
		738
782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
783	{	740	{
784	PL_top_env = &next->start_env;
785
786	setup_coro (next);	741	setup_coro (next);
787	next->cursp = stacklevel;	742	next->cursp = stacklevel;
788		743
789	prev->stack->refcnt++;	744	prev->stack->refcnt++;
790	prev->stack->usecnt++;	745	prev->stack->usecnt++;
…		…
818	coro_mortal = 0;	773	coro_mortal = 0;
819	}	774	}
820	UNLOCK;	775	UNLOCK;
821	}	776	}
822		777
823	#define SV_CORO(sv,func) \	778	/* use this function pointer to call the above function */
824	do { \	779	/* this is done to increase chances of the compiler not inlining the call */
825	if (SvROK (sv)) \	780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
826	sv = SvRV (sv); \
827	\
828	if (SvTYPE (sv) == SVt_PVHV) \
829	{ \
830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
831	\
832	if (!he) \
833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
834	\
835	(sv) = SvRV (HeVAL(he)); \
836	} \
837	\
838	/* must also be changed inside Coro::Cont::yield */ \
839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
841	\
842	} while(0)
843		781
844	#define SvSTATE(sv) (struct coro *)SvIV (sv)	782	static void
		783	coro_state_destroy (struct coro *coro)
		784	{
		785	if (coro->refcnt--)
		786	return;
845		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
846	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
847	api_transfer(pTHX_ SV prev, SV next, int flags)	853	api_transfer (pTHX_ SV prev, SV next, int flags)
848	{	854	{
849	SV_CORO (prev, "Coro::transfer");
850	SV_CORO (next, "Coro::transfer");
851
852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
853	}	856	}
854		857
855	/ Coro ******************************************************************/	858	/ Coro ******************************************************************/
856		859
857	#define PRIO_MAX 3	860	#define PRIO_MAX 3
…		…
861	#define PRIO_IDLE -3	864	#define PRIO_IDLE -3
862	#define PRIO_MIN -4	865	#define PRIO_MIN -4
863		866
864	/* for Coro.pm */	867	/* for Coro.pm */
865	static GV coro_current, coro_idle;	868	static GV coro_current, coro_idle;
866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;	870	static int coro_nready;
868		871
869	static void	872	static void
870	coro_enq (pTHX_ SV *sv)	873	coro_enq (pTHX_ SV *sv)
871	{	874	{
872	SV **xprio;
873	int prio;	875	int prio;
874		876
875	if (SvTYPE (sv) != SVt_PVHV)	877	if (SvTYPE (sv) != SVt_PVHV)
876	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");
877		879
878	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	880	prio = SvSTATE (sv)->prio;
879	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
880
881	prio = prio > PRIO_MAX ? PRIO_MAX
882	: prio < PRIO_MIN ? PRIO_MIN
883	: prio;
884		881
885	av_push (coro_ready [prio - PRIO_MIN], sv);	882	av_push (coro_ready [prio - PRIO_MIN], sv);
886	coro_nready++;	883	coro_nready++;
887	}	884	}
888		885
…		…
894	min_prio -= PRIO_MIN;	891	min_prio -= PRIO_MIN;
895	if (min_prio < 0)	892	if (min_prio < 0)
896	min_prio = 0;	893	min_prio = 0;
897		894
898	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
899	if (av_len (coro_ready[prio]) >= 0)	896	if (AvFILLp (coro_ready [prio]) >= 0)
900	{	897	{
901	coro_nready--;	898	coro_nready--;
902	return av_shift (coro_ready[prio]);	899	return av_shift (coro_ready [prio]);
903	}	900	}
904		901
905	return 0;	902	return 0;
906	}	903	}
907		904
…		…
922	api_schedule (void)	919	api_schedule (void)
923	{	920	{
924	dTHX;	921	dTHX;
925		922
926	SV prev, next;	923	SV prev, next;
		924	SV *current = GvSV (coro_current);
927		925
		926	for (;;)
		927	{
928	LOCK;	928	LOCK;
929		929
930	prev = SvRV (GvSV (coro_current));
931	next = coro_deq (aTHX_ PRIO_MIN);	930	next = coro_deq (aTHX_ PRIO_MIN);
932		931
933	if (!next)	932	if (next)
934	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;
935		954
936	/* free this only after the transfer */	955	/* free this only after the transfer */
937	coro_mortal = prev;	956	coro_mortal = prev;
938	SV_CORO (prev, "Coro::schedule");
939
940	SvRV (GvSV (coro_current)) = next;
941
942	SV_CORO (next, "Coro::schedule");
943		957
944	UNLOCK;	958	UNLOCK;
945		959
946	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
947	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
948	}	962	}
949		963
950	static void	964	static void
951	api_cede (void)	965	api_cede (void)
952	{	966	{
…		…
959	api_schedule ();	973	api_schedule ();
960	}	974	}
961		975
962	MODULE = Coro::State PACKAGE = Coro::State	976	MODULE = Coro::State PACKAGE = Coro::State
963		977
964	PROTOTYPES: ENABLE	978	PROTOTYPES: DISABLE
965		979
966	BOOT:	980	BOOT:
967	{ /* {} necessary for stoopid perl-5.6.x */	981	{
968	#ifdef USE_ITHREADS	982	#ifdef USE_ITHREADS
969	MUTEX_INIT (&coro_mutex);	983	MUTEX_INIT (&coro_mutex);
970	#endif	984	#endif
		985	BOOT_PAGESIZE;
971		986
972	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
973	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
974	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
975		988
976	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
977	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
978	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
…		…
980		993
981	main_mainstack = PL_mainstack;	994	main_mainstack = PL_mainstack;
982		995
983	coroapi.ver = CORO_API_VERSION;	996	coroapi.ver = CORO_API_VERSION;
984	coroapi.transfer = api_transfer;	997	coroapi.transfer = api_transfer;
985	}
986		998
987	Coro::State	999	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
988	_newprocess(args)	1000	}
989	SV * args	1001
990	PROTOTYPE: $	1002	SV *
		1003	new (char *klass, ...)
991	CODE:	1004	CODE:
992	Coro__State coro;	1005	{
		1006	struct coro *coro;
		1007	HV *hv;
		1008	int i;
993		1009
994	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
995	croak ("Coro::State::_newprocess expects an arrayref");
996
997	Newz (0, coro, 1, struct coro);	1010	Newz (0, coro, 1, struct coro);
		1011	coro->args = newAV ();
998		1012
999	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1013	for (i = 1; i < items; i++)
		1014	av_push (coro->args, newSVsv (ST (i)));
		1015
1000	/coro->mainstack = 0; //actual work is done inside transfer /	1016	/coro->mainstack = 0; //actual work is done inside transfer /
1001	/coro->stack = 0;/	1017	/coro->stack = 0;/
1002		1018
1003	/* same as JMPENV_BOOTSTRAP */	1019	hv = newHV ();
1004	/* 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;
1005	/Zero(&coro->start_env, 1, JMPENV);/	1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1006	coro->start_env.je_ret = -1;	1022	}
1007	coro->start_env.je_mustcatch = TRUE;
1008
1009	RETVAL = coro;
1010	OUTPUT:	1023	OUTPUT:
1011	RETVAL	1024	RETVAL
1012		1025
1013	void	1026	void
1014	transfer(prev, next, flags)	1027	transfer(prev, next, flags)
1015	SV *prev	1028	SV *prev
1016	SV *next	1029	SV *next
1017	int flags	1030	int flags
1018	PROTOTYPE: @
1019	CODE:	1031	CODE:
1020	PUTBACK;	1032	PUTBACK;
1021	SV_CORO (next, "Coro::transfer");
1022	SV_CORO (prev, "Coro::transfer");
1023	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1024	SPAGAIN;	1034	SPAGAIN;
1025		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
1026	void	1056	void
1027	DESTROY(coro)	1057	_clone_state_from (SV dst, SV src)
1028	Coro::State coro	1058	CODE:
1029	CODE:	1059	{
		1060	struct coro *coro_src = SvSTATE (src);
1030		1061
1031	if (coro->mainstack && coro->mainstack != main_mainstack)	1062	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1032	{
1033	struct coro temp;
1034		1063
1035	PUTBACK;	1064	++coro_src->refcnt;
1036	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;
1037	LOAD (aTHX_ coro);	1066	}
1038	SPAGAIN;
1039
1040	destroy_stacks (aTHX);
1041
1042	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1043	SPAGAIN;
1044
1045	coro->mainstack = 0;
1046	}
1047
1048	deallocate_stack (coro);
1049	SvREFCNT_dec (coro->args);
1050	Safefree (coro);
1051		1067
1052	void	1068	void
1053	_exit(code)	1069	_exit (code)
1054	int code	1070	int code
1055	PROTOTYPE: $	1071	PROTOTYPE: $
1056	CODE:	1072	CODE:
1057	_exit (code);	1073	_exit (code);
1058		1074
1059	MODULE = Coro::State PACKAGE = Coro::Cont	1075	MODULE = Coro::State PACKAGE = Coro::Cont
1060		1076
1061	# this is slightly dirty (should expose a c-level api)
1062
1063	void	1077	void
1064	yield(...)	1078	yield (...)
1065	PROTOTYPE: @	1079	PROTOTYPE: @
1066	CODE:	1080	CODE:
		1081	{
1067	SV *yieldstack;	1082	SV *yieldstack;
1068	SV *sv;	1083	SV *sv;
1069	AV *defav = GvAV (PL_defgv);	1084	AV *defav = GvAV (PL_defgv);
1070	struct coro prev, next;	1085	struct coro prev, next;
1071		1086
…		…
1080	av_fill (defav, items - 1);	1095	av_fill (defav, items - 1);
1081	while (items--)	1096	while (items--)
1082	av_store (defav, items, SvREFCNT_inc (ST(items)));	1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1083		1098
1084	sv = av_pop ((AV *)SvRV (yieldstack));	1099	sv = av_pop ((AV *)SvRV (yieldstack));
1085	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1086	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1087	SvREFCNT_dec (sv);	1102	SvREFCNT_dec (sv);
1088		1103
1089	transfer (aTHX_ prev, next, 0);	1104	coro_state_transfer (aTHX_ prev, next, 0);
		1105	}
1090		1106
1091	MODULE = Coro::State PACKAGE = Coro	1107	MODULE = Coro::State PACKAGE = Coro
1092		1108
1093	# this is slightly dirty (should expose a c-level api)
1094
1095	BOOT:	1109	BOOT:
1096	{	1110	{
1097	int i;	1111	int i;
		1112
1098	HV *stash = gv_stashpv ("Coro", TRUE);	1113	coro_stash = gv_stashpv ("Coro", TRUE);
1099		1114
1100	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1115	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1101	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1116	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1102	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1117	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1103	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1118	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1104	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1119	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1105	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1120	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1106		1121
1107	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1122	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1108	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1123	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1109		1124
1110	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1125	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1118	coroapi.ready = api_ready;	1133	coroapi.ready = api_ready;
1119	coroapi.nready = &coro_nready;	1134	coroapi.nready = &coro_nready;
1120	coroapi.current = coro_current;	1135	coroapi.current = coro_current;
1121		1136
1122	GCoroAPI = &coroapi;	1137	GCoroAPI = &coroapi;
1123	sv_setiv(sv, (IV)&coroapi);	1138	sv_setiv (sv, (IV)&coroapi);
1124	SvREADONLY_on(sv);	1139	SvREADONLY_on (sv);
1125	}	1140	}
1126	}	1141	}
1127		1142
1128	#if !PERL_MICRO	1143	#if !PERL_MICRO
1129		1144
1130	void	1145	void
1131	ready(self)	1146	ready (self)
1132	SV * self	1147	SV * self
1133	PROTOTYPE: $	1148	PROTOTYPE: $
1134	CODE:	1149	CODE:
1135	api_ready (self);	1150	api_ready (self);
1136		1151
1137	#endif	1152	#endif
1138		1153
1139	int	1154	int
1140	nready(...)	1155	nready (...)
1141	PROTOTYPE:	1156	PROTOTYPE:
1142	CODE:	1157	CODE:
1143	RETVAL = coro_nready;	1158	RETVAL = coro_nready;
1144	OUTPUT:	1159	OUTPUT:
1145	RETVAL	1160	RETVAL
1146		1161
1147	void	1162	void
1148	schedule(...)	1163	schedule (...)
1149	PROTOTYPE:	1164	PROTOTYPE:
1150	CODE:	1165	CODE:
1151	api_schedule ();	1166	api_schedule ();
1152		1167
1153	void	1168	void
1154	cede(...)	1169	cede (...)
1155	PROTOTYPE:	1170	PROTOTYPE:
1156	CODE:	1171	CODE:
1157	api_cede ();	1172	api_cede ();
1158		1173
1159	# and these are hacks	1174	# and these are hacks

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Comparing Coro/Coro/State.xs (file contents): Revision 1.74 by root, Mon Oct 23 22:49:09 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 1.74 by root, Mon Oct 23 22:49:09 2006 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC