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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.239 by root, Sat Jun 28 23:14:19 2008 UTC vs.
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
…		…
45	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
46	#endif	47	#endif
47		48
48	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
49	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51	#else
52	# define REGISTER_STACK(cctx,start,end)
53	#endif	51	#endif
54		52
55	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
56	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
57		55
58	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
59	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
60	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
61	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
80	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
81	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
82	# endif	80	# endif
83	#endif	81	#endif
84		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
85	/* 5.8.8 */	93	/* 5.8.8 */
86	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
87	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
88	#endif	96	#endif
89	#ifndef newSV	97	#ifndef newSV
90	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
91	#endif	99	#endif
92		100
93	/* 5.11 */
94	#ifndef CxHASARGS
95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96	#endif
97
98	/* 5.8.7 */	101	/* 5.8.7 */
99	#ifndef SvRV_set	102	#ifndef SvRV_set
100	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
101	#endif	104	#endif
102		105
…		…
113	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
114	#endif	117	#endif
115		118
116	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
117	* portable way as possible. */	120	* portable way as possible. */
118	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
119	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
		125	#endif
120		126
121	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
122		128
123	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
124	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
127	#else	133	#else
128	# define attribute(x)	134	# define attribute(x)
129	# define BARRIER
130	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
131	#endif	137	#endif
132		138
133	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
134	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
135		141
136	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
137		143
138	#include "CoroAPI.h"	144	#include "CoroAPI.h"
139		145
140	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
141	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
144	#else	155	#else
		156
145	# define LOCK (void)0	157	# define LOCK (void)0
146	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
147	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
148		166
149	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
150	struct io_state	168	struct io_state
151	{	169	{
		170	AV *res;
152	int errorno;	171	int errorno;
153	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
154	int laststatval;	173	int laststatval;
155	Stat_t statcache;	174	Stat_t statcache;
156	};	175	};
157		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
158	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
		187
		188	struct transfer_args
		189	{
		190	struct coro *prev, *next;
		191	};
164		192
165	static GV *irsgv; /* $/ */	193	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	194	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	195	static SV *rv_diehook;
168	static SV *rv_warnhook;	196	static SV *rv_warnhook;
…		…
200	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	228	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	229	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202	JMPENV *top_env;	230	JMPENV *top_env;
203	coro_context cctx;	231	coro_context cctx;
204		232
		233	U32 gen;
205	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
206	int valgrind_id;	235	int valgrind_id;
207	#endif	236	#endif
208	unsigned char flags;	237	unsigned char flags;
209	} coro_cctx;	238	} coro_cctx;
…		…
269	#define PRIO_MIN -4	298	#define PRIO_MIN -4
270		299
271	/* for Coro.pm */	300	/* for Coro.pm */
272	static SV *coro_current;	301	static SV *coro_current;
273	static SV *coro_readyhook;	302	static SV *coro_readyhook;
274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275	static int coro_nready;	304	static int coro_nready;
276	static struct coro *coro_first;	305	static struct coro *coro_first;
277		306
278	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
279		308
…		…
321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322	#endif	351	#endif
323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324	--AvFILLp (padlist);	353	--AvFILLp (padlist);
325		354
326	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
328		357
329	return newpadlist;	358	return newpadlist;
330	}	359	}
331		360
…		…
361		390
362	/* casting is fun. */	391	/* casting is fun. */
363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	392	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364	free_padlist (aTHX_ padlist);	393	free_padlist (aTHX_ padlist);
365		394
		395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		396
366	return 0;	397	return 0;
367	}	398	}
368		399
369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370	#define CORO_MAGIC_type_state PERL_MAGIC_ext	401	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
372	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
373	0, 0, 0, 0,	404	0, 0, 0, 0,
374	coro_cv_free	405	coro_cv_free
375	};	406	};
376		407
377	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
378	SvMAGIC (sv) \	409	SvMAGIC (sv) \
379	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
380	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
381	: mg_find (sv, type) \	412	: mg_find (sv, type) \
382	: 0	413	: 0
383		414
384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386		417
387	static struct coro *	418	INLINE struct coro *
388	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
389	{	420	{
390	HV *stash;	421	HV *stash;
391	MAGIC *mg;	422	MAGIC *mg;
392		423
…		…
420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	451	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	452	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422	else	453	else
423	{	454	{
424	#if CORO_PREFER_PERL_FUNCTIONS	455	#if CORO_PREFER_PERL_FUNCTIONS
425	/* this is probably cleaner, but also slower? */	456	/* this is probably cleaner? but also slower! */
		457	/* in practise, it seems to be less stable */
426	CV *cp = Perl_cv_clone (cv);	458	CV *cp = Perl_cv_clone (cv);
427	CvPADLIST (cv) = CvPADLIST (cp);	459	CvPADLIST (cv) = CvPADLIST (cp);
428	CvPADLIST (cp) = 0;	460	CvPADLIST (cp) = 0;
429	SvREFCNT_dec (cp);	461	SvREFCNT_dec (cp);
430	#else	462	#else
…		…
616		648
617	/*	649	/*
618	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
619	*/	651	*/
620	static void	652	static void
621	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
622	{	654	{
623	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
624	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
625		657
626	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
663	#undef VAR	695	#undef VAR
664	}	696	}
665	else	697	else
666	slot = coro->slot;	698	slot = coro->slot;
667		699
		700	if (slot)
		701	{
668	rss += sizeof (slot->curstackinfo);	702	rss += sizeof (slot->curstackinfo);
669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	703	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671	rss += slot->tmps_max * sizeof (SV *);	705	rss += slot->tmps_max * sizeof (SV *);
672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	706	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673	rss += slot->scopestack_max * sizeof (I32);	707	rss += slot->scopestack_max * sizeof (I32);
674	rss += slot->savestack_max * sizeof (ANY);	708	rss += slot->savestack_max * sizeof (ANY);
675		709
676	#if !PERL_VERSION_ATLEAST (5,10,0)	710	#if !PERL_VERSION_ATLEAST (5,10,0)
677	rss += slot->retstack_max * sizeof (OP *);	711	rss += slot->retstack_max * sizeof (OP *);
678	#endif	712	#endif
		713	}
679	}	714	}
680		715
681	return rss;	716	return rss;
		717	}
		718
		719	/** set stacklevel support **************************************************/
		720
		721	/* we sometimes need to create the effect of pp_slf calling us */
		722	#define SLF_HEAD (void)0
		723	/* we sometimes need to create the effect of leaving via pp_slf */
		724	#define SLF_TAIL slf_tail (aTHX)
		725
		726	INLINE void
		727	slf_tail (pTHX)
		728	{
		729	dSP;
		730	SV **bot = SP;
		731
		732	int gimme = GIMME_V;
		733
		734	/* make sure we put something on the stack in scalar context */
		735	if (gimme == G_SCALAR)
		736	{
		737	if (sp == bot)
		738	XPUSHs (&PL_sv_undef);
		739
		740	SP = bot + 1;
		741	}
		742
		743	PUTBACK;
682	}	744	}
683		745
684	/** coroutine stack handling ************************************************/	746	/** coroutine stack handling ************************************************/
685		747
686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	748	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);	749	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
688	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);	750	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
689		751
690	/* apparently < 5.8.8 */	752	/* apparently < 5.8.8 */
691	#undef MgPV_nolen_const
692	#ifndef MgPV_nolen_const	753	#ifndef MgPV_nolen_const
693	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \	754	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
694	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \	755	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
695	(const char*)(mg)->mg_ptr)	756	(const char*)(mg)->mg_ptr)
696	#endif	757	#endif
697		758
698	/*	759	/*
699	* This overrides the default magic get method of %SIG elements.	760	* This overrides the default magic get method of %SIG elements.
…		…
802	GvSV (PL_defgv) = newSV (0);	863	GvSV (PL_defgv) = newSV (0);
803	GvAV (PL_defgv) = coro->args; coro->args = 0;	864	GvAV (PL_defgv) = coro->args; coro->args = 0;
804	GvSV (PL_errgv) = newSV (0);	865	GvSV (PL_errgv) = newSV (0);
805	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	866	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
806	PL_rs = newSVsv (GvSV (irsgv));	867	PL_rs = newSVsv (GvSV (irsgv));
807	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	868	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
808		869
809	{	870	{
810	dSP;	871	dSP;
811	LOGOP myop;	872	UNOP myop;
812		873
813	Zero (&myop, 1, LOGOP);	874	Zero (&myop, 1, UNOP);
814	myop.op_next = Nullop;	875	myop.op_next = Nullop;
815	myop.op_flags = OPf_WANT_VOID;	876	myop.op_flags = OPf_WANT_VOID;
816		877
817	PUSHMARK (SP);	878	PUSHMARK (SP);
818	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
821	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
822	SPAGAIN;	883	SPAGAIN;
823	}	884	}
824		885
825	/* this newly created coroutine might be run on an existing cctx which most	886	/* this newly created coroutine might be run on an existing cctx which most
826	* likely was suspended in set_stacklevel, called from entersub.	887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
827	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	888	* so we have to emulate entering pp_set_stacklevel here.
828	* so we ENTER here for symmetry
829	*/	889	*/
830	ENTER;	890	SLF_HEAD;
831	}	891	}
832		892
833	static void	893	static void
834	coro_destroy (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
835	{	895	{
836	if (!IN_DESTRUCT)	896	if (!IN_DESTRUCT)
837	{	897	{
838	/* restore all saved variables and stuff */	898	/* restore all saved variables and stuff */
839	LEAVE_SCOPE (0);	899	LEAVE_SCOPE (0);
…		…
861	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
862		922
863	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
864	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro->throw);
865		925
866	coro_destroy_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
867	}	927	}
868		928
869	static void	929	INLINE void
870	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
871	{	931	{
872	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
873	{	933	{
874	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
908	: cx->blk_gimme == G_SCALAR ? bot + 1	968	: cx->blk_gimme == G_SCALAR ? bot + 1
909	: bot;	969	: bot;
910		970
911	av_extend (av, top - bot);	971	av_extend (av, top - bot);
912	while (bot < top)	972	while (bot < top)
913	av_push (av, SvREFCNT_inc (*bot++));	973	av_push (av, SvREFCNT_inc_NN (*bot++));
914		974
915	PL_runops = RUNOPS_DEFAULT;	975	PL_runops = RUNOPS_DEFAULT;
916	ENTER;	976	ENTER;
917	SAVETMPS;	977	SAVETMPS;
918	EXTEND (SP, 3);	978	EXTEND (SP, 3);
…		…
998		1058
999	TAINT_NOT;	1059	TAINT_NOT;
1000	return 0;	1060	return 0;
1001	}	1061	}
1002		1062
		1063	static void
		1064	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1065	{
		1066	ta->prev = (struct coro *)cctx;
		1067	ta->next = 0;
		1068	}
		1069
1003	/* inject a fake call to Coro::State::_cctx_init into the execution */	1070	/* inject a fake call to Coro::State::_cctx_init into the execution */
1004	/* _cctx_init should be careful, as it could be called at almost any time */	1071	/* _cctx_init should be careful, as it could be called at almost any time */
1005	/* during execution of a perl program */	1072	/* during execution of a perl program */
		1073	/* also initialises PL_top_env */
1006	static void NOINLINE	1074	static void NOINLINE
1007	cctx_prepare (pTHX_ coro_cctx *cctx)	1075	cctx_prepare (pTHX_ coro_cctx *cctx)
1008	{	1076	{
1009	dSP;	1077	dSP;
1010	LOGOP myop;	1078	UNOP myop;
1011		1079
1012	PL_top_env = &PL_start_env;	1080	PL_top_env = &PL_start_env;
1013		1081
1014	if (cctx->flags & CC_TRACE)	1082	if (cctx->flags & CC_TRACE)
1015	PL_runops = runops_trace;	1083	PL_runops = runops_trace;
1016		1084
1017	Zero (&myop, 1, LOGOP);	1085	Zero (&myop, 1, UNOP);
1018	myop.op_next = PL_op;	1086	myop.op_next = PL_op;
1019	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1087	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1020		1088
1021	PUSHMARK (SP);	1089	PUSHMARK (SP);
1022	EXTEND (SP, 2);	1090	EXTEND (SP, 2);
1023	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1024	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1025	PUTBACK;	1093	PUTBACK;
1026	PL_op = (OP *)&myop;	1094	PL_op = (OP *)&myop;
1027	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1028	SPAGAIN;	1096	SPAGAIN;
1029	}	1097	}
1030		1098
		1099	/* the tail of transfer: execute stuff we can only do after a transfer */
		1100	INLINE void
		1101	transfer_tail (pTHX)
		1102	{
		1103	struct coro *next = (struct coro *)transfer_next;
		1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1106
		1107	free_coro_mortal (aTHX);
		1108	UNLOCK;
		1109
		1110	if (expect_false (next->throw))
		1111	{
		1112	SV *exception = sv_2mortal (next->throw);
		1113
		1114	next->throw = 0;
		1115	sv_setsv (ERRSV, exception);
		1116	croak (0);
		1117	}
		1118	}
		1119
1031	/*	1120	/*
1032	* this is a _very_ stripped down perl interpreter ;)	1121	* this is a _very_ stripped down perl interpreter ;)
1033	*/	1122	*/
1034	static void	1123	static void
1035	cctx_run (void *arg)	1124	cctx_run (void *arg)
1036	{	1125	{
		1126	#ifdef USE_ITHREADS
		1127	# if CORO_PTHREAD
		1128	PERL_SET_CONTEXT (coro_thx);
		1129	# endif
		1130	#endif
		1131	{
1037	dTHX;	1132	dTHX;
1038		1133
1039	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1134	/* we are the alternative tail to pp_set_stacklevel */
1040	UNLOCK;	1135	/* so do the same things here */
		1136	SLF_TAIL;
1041		1137
1042	/* we now skip the entersub that lead to transfer() */	1138	/* we now skip the op that did lead to transfer() */
1043	PL_op = PL_op->op_next;	1139	PL_op = PL_op->op_next;
1044		1140
1045	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
1046	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
1047		1143
		1144	/* cctx_run is the alternative tail of transfer() */
		1145	transfer_tail (aTHX);
		1146
1048	/* somebody or something will hit me for both perl_run and PL_restartop */	1147	/* somebody or something will hit me for both perl_run and PL_restartop */
1049	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1050	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
1051		1150
1052	/*	1151	/*
1053	* If perl-run returns we assume exit() was being called or the coro	1152	* If perl-run returns we assume exit() was being called or the coro
1054	* fell off the end, which seems to be the only valid (non-bug)	1153	* fell off the end, which seems to be the only valid (non-bug)
1055	* reason for perl_run to return. We try to exit by jumping to the	1154	* reason for perl_run to return. We try to exit by jumping to the
1056	* bootstrap-time "top" top_env, as we cannot restore the "main"	1155	* bootstrap-time "top" top_env, as we cannot restore the "main"
1057	* coroutine as Coro has no such concept	1156	* coroutine as Coro has no such concept
1058	*/	1157	*/
1059	PL_top_env = main_top_env;	1158	PL_top_env = main_top_env;
1060	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1159	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1160	}
1061	}	1161	}
1062		1162
1063	static coro_cctx *	1163	static coro_cctx *
1064	cctx_new ()	1164	cctx_new ()
1065	{	1165	{
1066	coro_cctx *cctx;	1166	coro_cctx *cctx;
		1167
		1168	++cctx_count;
		1169	New (0, cctx, 1, coro_cctx);
		1170
		1171	cctx->gen = cctx_gen;
		1172	cctx->flags = 0;
		1173	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1174
		1175	return cctx;
		1176	}
		1177
		1178	/* create a new cctx only suitable as source */
		1179	static coro_cctx *
		1180	cctx_new_empty ()
		1181	{
		1182	coro_cctx *cctx = cctx_new ();
		1183
		1184	cctx->sptr = 0;
		1185	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1186
		1187	return cctx;
		1188	}
		1189
		1190	/* create a new cctx suitable as destination/running a perl interpreter */
		1191	static coro_cctx *
		1192	cctx_new_run ()
		1193	{
		1194	coro_cctx *cctx = cctx_new ();
1067	void *stack_start;	1195	void *stack_start;
1068	size_t stack_size;	1196	size_t stack_size;
1069		1197
1070	++cctx_count;
1071
1072	Newz (0, cctx, 1, coro_cctx);
1073
1074	#if HAVE_MMAP	1198	#if HAVE_MMAP
1075	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1199	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1076	/* mmap supposedly does allocate-on-write for us */	1200	/* mmap supposedly does allocate-on-write for us */
1077	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1201	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1078		1202
1079	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1080	{	1204	{
1081	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1082	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1083	# endif	1207	#endif
1084	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1085	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1086	cctx->flags |= CC_MAPPED;	1210	cctx->flags |= CC_MAPPED;
1087	}	1211	}
1088	else	1212	else
1089	#endif	1213	#endif
1090	{	1214	{
1091	cctx->ssize = coro_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1092	New (0, cctx->sptr, coro_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1093		1217
1094	if (!cctx->sptr)	1218	if (!cctx->sptr)
1095	{	1219	{
1096	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1097	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1098	}	1222	}
1099		1223
1100	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1101	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1102	}	1226	}
1103		1227
1104	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1228	#if CORO_USE_VALGRIND
		1229	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1230	#endif
		1231
1105	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1232	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1106		1233
1107	return cctx;	1234	return cctx;
1108	}	1235	}
1109		1236
…		…
1112	{	1239	{
1113	if (!cctx)	1240	if (!cctx)
1114	return;	1241	return;
1115		1242
1116	--cctx_count;	1243	--cctx_count;
		1244	coro_destroy (&cctx->cctx);
1117		1245
		1246	/* coro_transfer creates new, empty cctx's */
		1247	if (cctx->sptr)
		1248	{
1118	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1119	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1120	#endif	1251	#endif
1121		1252
1122	#if HAVE_MMAP	1253	#if HAVE_MMAP
1123	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1124	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1125	else	1256	else
1126	#endif	1257	#endif
1127	Safefree (cctx->sptr);	1258	Safefree (cctx->sptr);
		1259	}
1128		1260
1129	Safefree (cctx);	1261	Safefree (cctx);
1130	}	1262	}
1131		1263
1132	/* wether this cctx should be destructed */	1264	/* wether this cctx should be destructed */
1133	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1265	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1134		1266
1135	static coro_cctx *	1267	static coro_cctx *
1136	cctx_get (pTHX)	1268	cctx_get (pTHX)
1137	{	1269	{
1138	while (expect_true (cctx_first))	1270	while (expect_true (cctx_first))
…		…
1145	return cctx;	1277	return cctx;
1146		1278
1147	cctx_destroy (cctx);	1279	cctx_destroy (cctx);
1148	}	1280	}
1149		1281
1150	return cctx_new ();	1282	return cctx_new_run ();
1151	}	1283	}
1152		1284
1153	static void	1285	static void
1154	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1155	{	1287	{
		1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1289
1156	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1157	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1158	{	1292	{
1159	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
1160	cctx_first = first->next;	1294	cctx_first = first->next;
1161	--cctx_idle;	1295	--cctx_idle;
1162		1296
…		…
1194	/* always use the TRANSFER macro */	1328	/* always use the TRANSFER macro */
1195	static void NOINLINE	1329	static void NOINLINE
1196	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1330	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1197	{	1331	{
1198	dSTACKLEVEL;	1332	dSTACKLEVEL;
1199	static volatile int has_throw;
1200		1333
1201	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1202	if (expect_false (!next))	1335	if (expect_false (!next))
1203	{	1336	{
1204	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1205	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1338	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1206	}	1339	}
1207	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1208	{	1341	{
1209	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
1210		1343
1211	if (expect_false (prev->flags & CF_NEW))	1344	if (expect_false (prev->flags & CF_NEW))
1212	{	1345	{
1213	/* create a new empty context */	1346	/* create a new empty/source context */
1214	Newz (0, prev->cctx, 1, coro_cctx);	1347	prev->cctx = cctx_new_empty ();
1215	prev->flags &= ~CF_NEW;	1348	prev->flags &= ~CF_NEW;
1216	prev->flags |= CF_RUNNING;	1349	prev->flags |= CF_RUNNING;
1217	}	1350	}
1218		1351
1219	prev->flags &= ~CF_RUNNING;	1352	prev->flags &= ~CF_RUNNING;
…		…
1234	else	1367	else
1235	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1236		1369
1237	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1238		1371
1239	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1240	if (expect_true (	1373	if (expect_true (
1241	prev__cctx->idle_sp == STACKLEVEL	1374	prev__cctx->idle_sp == stacklevel
1242	&& !(prev__cctx->flags & CC_TRACE)	1375	&& !(prev__cctx->flags & CC_TRACE)
1243	&& !force_cctx	1376	&& !force_cctx
1244	))	1377	))
1245	{	1378	{
1246	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1247	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1380	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1248		1381
1249	prev->cctx = 0;	1382	prev->cctx = 0;
1250		1383
1251	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1384	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1252	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1385	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1260	++next->usecount;	1393	++next->usecount;
1261		1394
1262	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1263	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1264		1397
1265	has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1266		1400
1267	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1268	{	1402	{
1269	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1270	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1271	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1272	}	1406	}
1273		1407
1274	free_coro_mortal (aTHX);	1408	transfer_tail (aTHX);
1275	UNLOCK;
1276
1277	if (expect_false (has_throw))
1278	{
1279	struct coro *coro = SvSTATE (coro_current);
1280
1281	if (coro->throw)
1282	{
1283	SV *exception = coro->throw;
1284	coro->throw = 0;
1285	sv_setsv (ERRSV, exception);
1286	croak (0);
1287	}
1288	}
1289	}	1409	}
1290	}	1410	}
1291
1292	struct transfer_args
1293	{
1294	struct coro *prev, *next;
1295	};
1296		1411
1297	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1412	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1298	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1299		1414
1300	/** high level stuff ********************************************************/	1415	/** high level stuff ********************************************************/
…		…
1326	croak ("FATAL: tried to destroy currently running coroutine");	1441	croak ("FATAL: tried to destroy currently running coroutine");
1327		1442
1328	save_perl (aTHX_ &temp);	1443	save_perl (aTHX_ &temp);
1329	load_perl (aTHX_ coro);	1444	load_perl (aTHX_ coro);
1330		1445
1331	coro_destroy (aTHX_ coro);	1446	coro_destruct (aTHX_ coro);
1332		1447
1333	load_perl (aTHX_ &temp);	1448	load_perl (aTHX_ &temp);
1334		1449
1335	coro->slot = 0;	1450	coro->slot = 0;
1336	}	1451	}
…		…
1442	LOCK;	1557	LOCK;
1443		1558
1444	sv_hook = coro_nready ? 0 : coro_readyhook;	1559	sv_hook = coro_nready ? 0 : coro_readyhook;
1445	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1560	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1446		1561
1447	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1562	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1448	++coro_nready;	1563	++coro_nready;
1449		1564
1450	UNLOCK;	1565	UNLOCK;
1451		1566
1452	if (sv_hook)	1567	if (sv_hook)
…		…
1473		1588
1474	static int	1589	static int
1475	api_is_ready (SV *coro_sv)	1590	api_is_ready (SV *coro_sv)
1476	{	1591	{
1477	dTHX;	1592	dTHX;
		1593
1478	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1594	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1479	}	1595	}
1480		1596
1481	static void	1597	INLINE void
1482	prepare_schedule (pTHX_ struct transfer_args *ta)	1598	prepare_schedule (pTHX_ struct transfer_args *ta)
1483	{	1599	{
1484	SV *prev_sv, *next_sv;	1600	SV *prev_sv, *next_sv;
1485		1601
1486	for (;;)	1602	for (;;)
…		…
1512	/* cannot transfer to destroyed coros, skip and look for next */	1628	/* cannot transfer to destroyed coros, skip and look for next */
1513	if (expect_false (ta->next->flags & CF_DESTROYED))	1629	if (expect_false (ta->next->flags & CF_DESTROYED))
1514	{	1630	{
1515	UNLOCK;	1631	UNLOCK;
1516	SvREFCNT_dec (next_sv);	1632	SvREFCNT_dec (next_sv);
1517	/* coro_nready is already taken care of by destroy */	1633	/* coro_nready has already been taken care of by destroy */
1518	continue;	1634	continue;
1519	}	1635	}
1520		1636
1521	--coro_nready;	1637	--coro_nready;
1522	UNLOCK;	1638	UNLOCK;
…		…
1525		1641
1526	/* free this only after the transfer */	1642	/* free this only after the transfer */
1527	prev_sv = SvRV (coro_current);	1643	prev_sv = SvRV (coro_current);
1528	ta->prev = SvSTATE (prev_sv);	1644	ta->prev = SvSTATE (prev_sv);
1529	TRANSFER_CHECK (*ta);	1645	TRANSFER_CHECK (*ta);
1530	assert (ta->next->flags & CF_READY);	1646	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1531	ta->next->flags &= ~CF_READY;	1647	ta->next->flags &= ~CF_READY;
1532	SvRV_set (coro_current, next_sv);	1648	SvRV_set (coro_current, next_sv);
1533		1649
1534	LOCK;	1650	LOCK;
1535	free_coro_mortal (aTHX);	1651	free_coro_mortal (aTHX);
1536	coro_mortal = prev_sv;	1652	coro_mortal = prev_sv;
1537	UNLOCK;	1653	UNLOCK;
1538	}	1654	}
1539		1655
1540	static void	1656	INLINE void
1541	prepare_cede (pTHX_ struct transfer_args *ta)	1657	prepare_cede (pTHX_ struct transfer_args *ta)
1542	{	1658	{
1543	api_ready (coro_current);	1659	api_ready (coro_current);
1544	prepare_schedule (aTHX_ ta);	1660	prepare_schedule (aTHX_ ta);
1545	}	1661	}
1546		1662
1547	static int	1663	static void
1548	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1664	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1549	{	1665	{
		1666	SV *prev = SvRV (coro_current);
		1667
1550	if (coro_nready)	1668	if (coro_nready)
1551	{	1669	{
1552	SV *prev = SvRV (coro_current);
1553	prepare_schedule (aTHX_ ta);	1670	prepare_schedule (aTHX_ ta);
1554	api_ready (prev);	1671	api_ready (prev);
		1672	}
		1673	else
		1674	ta->prev = ta->next = SvSTATE (prev);
		1675	}
		1676
		1677	static void
		1678	api_schedule (void)
		1679	{
		1680	dTHX;
		1681	struct transfer_args ta;
		1682
		1683	prepare_schedule (aTHX_ &ta);
		1684	TRANSFER (ta, 1);
		1685	}
		1686
		1687	static int
		1688	api_cede (void)
		1689	{
		1690	dTHX;
		1691	struct transfer_args ta;
		1692
		1693	prepare_cede (aTHX_ &ta);
		1694
		1695	if (expect_true (ta.prev != ta.next))
		1696	{
		1697	TRANSFER (ta, 1);
1555	return 1;	1698	return 1;
1556	}	1699	}
1557	else	1700	else
1558	return 0;	1701	return 0;
1559	}	1702	}
1560		1703
1561	static void
1562	api_schedule (void)
1563	{
1564	dTHX;
1565	struct transfer_args ta;
1566
1567	prepare_schedule (aTHX_ &ta);
1568	TRANSFER (ta, 1);
1569	}
1570
1571	static int	1704	static int
1572	api_cede (void)	1705	api_cede_notself (void)
1573	{	1706	{
		1707	if (coro_nready)
		1708	{
1574	dTHX;	1709	dTHX;
1575	struct transfer_args ta;	1710	struct transfer_args ta;
1576		1711
1577	prepare_cede (aTHX_ &ta);	1712	prepare_cede_notself (aTHX_ &ta);
1578
1579	if (expect_true (ta.prev != ta.next))
1580	{
1581	TRANSFER (ta, 1);	1713	TRANSFER (ta, 1);
1582	return 1;	1714	return 1;
1583	}	1715	}
1584	else	1716	else
1585	return 0;	1717	return 0;
1586	}	1718	}
1587		1719
1588	static int
1589	api_cede_notself (void)
1590	{
1591	dTHX;
1592	struct transfer_args ta;
1593
1594	if (prepare_cede_notself (aTHX_ &ta))
1595	{
1596	TRANSFER (ta, 1);
1597	return 1;
1598	}
1599	else
1600	return 0;
1601	}
1602
1603	static void	1720	static void
1604	api_trace (SV *coro_sv, int flags)	1721	api_trace (SV *coro_sv, int flags)
1605	{	1722	{
1606	dTHX;	1723	dTHX;
1607	struct coro *coro = SvSTATE (coro_sv);	1724	struct coro *coro = SvSTATE (coro_sv);
1608		1725
1609	if (flags & CC_TRACE)	1726	if (flags & CC_TRACE)
1610	{	1727	{
1611	if (!coro->cctx)	1728	if (!coro->cctx)
1612	coro->cctx = cctx_new ();	1729	coro->cctx = cctx_new_run ();
1613	else if (!(coro->cctx->flags & CC_TRACE))	1730	else if (!(coro->cctx->flags & CC_TRACE))
1614	croak ("cannot enable tracing on coroutine with custom stack");	1731	croak ("cannot enable tracing on coroutine with custom stack");
1615		1732
1616	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1733	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1617	}	1734	}
…		…
1624	else	1741	else
1625	coro->slot->runops = RUNOPS_DEFAULT;	1742	coro->slot->runops = RUNOPS_DEFAULT;
1626	}	1743	}
1627	}	1744	}
1628		1745
		1746	#if 0
		1747	static int
		1748	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1749	{
		1750	AV *padlist;
		1751	AV *av = (AV *)mg->mg_obj;
		1752
		1753	abort ();
		1754
		1755	return 0;
		1756	}
		1757
		1758	static MGVTBL coro_gensub_vtbl = {
		1759	0, 0, 0, 0,
		1760	coro_gensub_free
		1761	};
		1762	#endif
		1763
		1764	/*****************************************************************************/
		1765	/* PerlIO::cede */
		1766
		1767	typedef struct
		1768	{
		1769	PerlIOBuf base;
		1770	NV next, every;
		1771	} PerlIOCede;
		1772
		1773	static IV
		1774	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1775	{
		1776	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1777
		1778	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1779	self->next = nvtime () + self->every;
		1780
		1781	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1782	}
		1783
		1784	static SV *
		1785	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1786	{
		1787	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1788
		1789	return newSVnv (self->every);
		1790	}
		1791
		1792	static IV
		1793	PerlIOCede_flush (pTHX_ PerlIO *f)
		1794	{
		1795	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1796	double now = nvtime ();
		1797
		1798	if (now >= self->next)
		1799	{
		1800	api_cede ();
		1801	self->next = now + self->every;
		1802	}
		1803
		1804	return PerlIOBuf_flush (aTHX_ f);
		1805	}
		1806
		1807	static PerlIO_funcs PerlIO_cede =
		1808	{
		1809	sizeof(PerlIO_funcs),
		1810	"cede",
		1811	sizeof(PerlIOCede),
		1812	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1813	PerlIOCede_pushed,
		1814	PerlIOBuf_popped,
		1815	PerlIOBuf_open,
		1816	PerlIOBase_binmode,
		1817	PerlIOCede_getarg,
		1818	PerlIOBase_fileno,
		1819	PerlIOBuf_dup,
		1820	PerlIOBuf_read,
		1821	PerlIOBuf_unread,
		1822	PerlIOBuf_write,
		1823	PerlIOBuf_seek,
		1824	PerlIOBuf_tell,
		1825	PerlIOBuf_close,
		1826	PerlIOCede_flush,
		1827	PerlIOBuf_fill,
		1828	PerlIOBase_eof,
		1829	PerlIOBase_error,
		1830	PerlIOBase_clearerr,
		1831	PerlIOBase_setlinebuf,
		1832	PerlIOBuf_get_base,
		1833	PerlIOBuf_bufsiz,
		1834	PerlIOBuf_get_ptr,
		1835	PerlIOBuf_get_cnt,
		1836	PerlIOBuf_set_ptrcnt,
		1837	};
		1838
		1839	/*****************************************************************************/
		1840
		1841	static const CV *slf_cv; /* for quick consistency check */
		1842
		1843	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1844	static SV *slf_arg0;
		1845	static SV *slf_arg1;
		1846
		1847	/* this restores the stack in the case we patched the entersub, to */
		1848	/* recreate the stack frame as perl will on following calls */
		1849	/* since entersub cleared the stack */
		1850	static OP *
		1851	pp_restore (pTHX)
		1852	{
		1853	dSP;
		1854
		1855	PUSHMARK (SP);
		1856
		1857	EXTEND (SP, 3);
		1858	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1859	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1860	PUSHs ((SV *)CvGV (slf_cv));
		1861
		1862	RETURNOP (slf_restore.op_first);
		1863	}
		1864
		1865	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
		1866
		1867	/* declare prototype */
		1868	XS(XS_Coro__State__set_stacklevel);
		1869
		1870	/*
		1871	* these not obviously related functions are all rolled into one
		1872	* function to increase chances that they all will call transfer with the same
		1873	* stack offset
		1874	* SLF stands for "schedule-like-function".
		1875	*/
		1876	static OP *
		1877	pp_slf (pTHX)
		1878	{
		1879	dSP;
		1880	struct transfer_args ta;
		1881	SV **arg = PL_stack_base + TOPMARK + 1;
		1882	int items = SP - arg; /* args without function object */
		1883
		1884	/* do a quick consistency check on the "function" object, and if it isn't */
		1885	/* for us, divert to the real entersub */
		1886	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1887	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1888
		1889	/* pop args */
		1890	SP = PL_stack_base + POPMARK;
		1891
		1892	if (!(PL_op->op_flags & OPf_STACKED))
		1893	{
		1894	/* ampersand-form of call, use @_ instead of stack */
		1895	AV *av = GvAV (PL_defgv);
		1896	arg = AvARRAY (av);
		1897	items = AvFILLp (av) + 1;
		1898	}
		1899
		1900	PUTBACK;
		1901	switch (PL_op->op_private & OPpENTERSUB_SLF)
		1902	{
		1903	case 0:
		1904	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1905	break;
		1906
		1907	case 1:
		1908	if (items != 2)
		1909	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1910
		1911	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1912	break;
		1913
		1914	case 2:
		1915	prepare_schedule (aTHX_ &ta);
		1916	break;
		1917
		1918	case 3:
		1919	prepare_cede (aTHX_ &ta);
		1920	break;
		1921
		1922	case 4:
		1923	prepare_cede_notself (aTHX_ &ta);
		1924	break;
		1925
		1926	case 5:
		1927	abort ();
		1928
		1929	default:
		1930	abort ();
		1931	}
		1932
		1933	TRANSFER (ta, 0);
		1934	SPAGAIN;
		1935
		1936	PUTBACK;
		1937	SLF_TAIL;
		1938	SPAGAIN;
		1939	RETURN;
		1940	}
		1941
		1942	static void
		1943	coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)
		1944	{
		1945	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1946
		1947	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
		1948	slf_cv = cv;
		1949
		1950	/* we patch the op, and then re-run the whole call */
		1951	/* we have to put the same argument on the stack for this to work */
		1952	/* and this will be done by pp_restore */
		1953	slf_restore.op_next = (OP *)&slf_restore;
		1954	slf_restore.op_type = OP_NULL;
		1955	slf_restore.op_ppaddr = pp_restore;
		1956	slf_restore.op_first = PL_op;
		1957
		1958	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1959	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1960
		1961	PL_op->op_ppaddr = pp_slf;
		1962	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
		1963
		1964	PL_op = (OP *)&slf_restore;
		1965	}
		1966
1629	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1967	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1630		1968
1631	PROTOTYPES: DISABLE	1969	PROTOTYPES: DISABLE
1632		1970
1633	BOOT:	1971	BOOT:
1634	{	1972	{
1635	#ifdef USE_ITHREADS	1973	#ifdef USE_ITHREADS
1636	MUTEX_INIT (&coro_mutex);	1974	MUTEX_INIT (&coro_lock);
		1975	# if CORO_PTHREAD
		1976	coro_thx = PERL_GET_CONTEXT;
		1977	# endif
1637	#endif	1978	#endif
1638	BOOT_PAGESIZE;	1979	BOOT_PAGESIZE;
1639		1980
1640	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1981	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1641	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1982	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
…		…
1663		2004
1664	coroapi.ver = CORO_API_VERSION;	2005	coroapi.ver = CORO_API_VERSION;
1665	coroapi.rev = CORO_API_REVISION;	2006	coroapi.rev = CORO_API_REVISION;
1666	coroapi.transfer = api_transfer;	2007	coroapi.transfer = api_transfer;
1667		2008
		2009	{
		2010	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		2011
		2012	if (!svp) croak ("Time::HiRes is required");
		2013	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		2014
		2015	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		2016	}
		2017
1668	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2018	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1669	}	2019	}
1670		2020
1671	SV *	2021	SV *
1672	new (char *klass, ...)	2022	new (char *klass, ...)
…		…
1695	av_push (coro->args, newSVsv (ST (i)));	2045	av_push (coro->args, newSVsv (ST (i)));
1696	}	2046	}
1697	OUTPUT:	2047	OUTPUT:
1698	RETVAL	2048	RETVAL
1699		2049
1700	# these not obviously related functions are all rolled into the same xs
1701	# function to increase chances that they all will call transfer with the same
1702	# stack offset
1703	void	2050	void
1704	_set_stacklevel (...)	2051	_set_stacklevel (...)
1705	ALIAS:	2052	ALIAS:
1706	Coro::State::transfer = 1	2053	Coro::State::transfer = 1
1707	Coro::schedule = 2	2054	Coro::schedule = 2
1708	Coro::cede = 3	2055	Coro::cede = 3
1709	Coro::cede_notself = 4	2056	Coro::cede_notself = 4
1710	CODE:	2057	CODE:
1711	{	2058	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1712	struct transfer_args ta;
1713
1714	PUTBACK;
1715	switch (ix)
1716	{
1717	case 0:
1718	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1719	ta.next = 0;
1720	break;
1721
1722	case 1:
1723	if (items != 2)
1724	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1725
1726	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1727	break;
1728
1729	case 2:
1730	prepare_schedule (aTHX_ &ta);
1731	break;
1732
1733	case 3:
1734	prepare_cede (aTHX_ &ta);
1735	break;
1736
1737	case 4:
1738	if (!prepare_cede_notself (aTHX_ &ta))
1739	XSRETURN_EMPTY;
1740
1741	break;
1742	}
1743	SPAGAIN;
1744
1745	BARRIER;
1746	PUTBACK;
1747	TRANSFER (ta, 0);
1748	SPAGAIN; /* might be the sp of a different coroutine now */
1749	/* be extra careful not to ever do anything after TRANSFER */
1750	}
1751		2059
1752	bool	2060	bool
1753	_destroy (SV *coro_sv)	2061	_destroy (SV *coro_sv)
1754	CODE:	2062	CODE:
1755	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2063	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1763	_exit (code);	2071	_exit (code);
1764		2072
1765	int	2073	int
1766	cctx_stacksize (int new_stacksize = 0)	2074	cctx_stacksize (int new_stacksize = 0)
1767	CODE:	2075	CODE:
1768	RETVAL = coro_stacksize;	2076	RETVAL = cctx_stacksize;
1769	if (new_stacksize)	2077	if (new_stacksize)
		2078	{
1770	coro_stacksize = new_stacksize;	2079	cctx_stacksize = new_stacksize;
		2080	++cctx_gen;
		2081	}
		2082	OUTPUT:
		2083	RETVAL
		2084
		2085	int
		2086	cctx_max_idle (int max_idle = 0)
		2087	CODE:
		2088	RETVAL = cctx_max_idle;
		2089	if (max_idle > 1)
		2090	cctx_max_idle = max_idle;
1771	OUTPUT:	2091	OUTPUT:
1772	RETVAL	2092	RETVAL
1773		2093
1774	int	2094	int
1775	cctx_count ()	2095	cctx_count ()
…		…
1799	call (Coro::State coro, SV *coderef)	2119	call (Coro::State coro, SV *coderef)
1800	ALIAS:	2120	ALIAS:
1801	eval = 1	2121	eval = 1
1802	CODE:	2122	CODE:
1803	{	2123	{
1804	if (coro->mainstack)	2124	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1805	{	2125	{
1806	struct coro temp;	2126	struct coro temp;
1807		2127
1808	if (!(coro->flags & CF_RUNNING))	2128	if (!(coro->flags & CF_RUNNING))
1809	{	2129	{
…		…
1853	RETVAL = boolSV (coro->flags & ix);	2173	RETVAL = boolSV (coro->flags & ix);
1854	OUTPUT:	2174	OUTPUT:
1855	RETVAL	2175	RETVAL
1856		2176
1857	void	2177	void
		2178	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2179	PROTOTYPE: $;$
		2180	CODE:
		2181	SvREFCNT_dec (self->throw);
		2182	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2183
		2184	void
1858	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2185	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1859		2186
1860	SV *	2187	SV *
1861	has_cctx (Coro::State coro)	2188	has_cctx (Coro::State coro)
1862	PROTOTYPE: $	2189	PROTOTYPE: $
…		…
1871	CODE:	2198	CODE:
1872	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2199	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1873	OUTPUT:	2200	OUTPUT:
1874	RETVAL	2201	RETVAL
1875		2202
1876	IV	2203	UV
1877	rss (Coro::State coro)	2204	rss (Coro::State coro)
1878	PROTOTYPE: $	2205	PROTOTYPE: $
1879	ALIAS:	2206	ALIAS:
1880	usecount = 1	2207	usecount = 1
1881	CODE:	2208	CODE:
…		…
1891	force_cctx ()	2218	force_cctx ()
1892	CODE:	2219	CODE:
1893	struct coro *coro = SvSTATE (coro_current);	2220	struct coro *coro = SvSTATE (coro_current);
1894	coro->cctx->idle_sp = 0;	2221	coro->cctx->idle_sp = 0;
1895		2222
1896	MODULE = Coro::State PACKAGE = Coro
1897
1898	BOOT:
1899	{
1900	int i;
1901
1902	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1903	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1904	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1905
1906	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1907	SvREADONLY_on (coro_current);
1908
1909	coro_stash = gv_stashpv ("Coro", TRUE);
1910
1911	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1912	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1913	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1914	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1915	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1916	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1917
1918	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1919	coro_ready[i] = newAV ();
1920
1921	{
1922	SV *sv = perl_get_sv ("Coro::API", TRUE);
1923	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1924
1925	coroapi.schedule = api_schedule;
1926	coroapi.cede = api_cede;
1927	coroapi.cede_notself = api_cede_notself;
1928	coroapi.ready = api_ready;
1929	coroapi.is_ready = api_is_ready;
1930	coroapi.nready = &coro_nready;
1931	coroapi.current = coro_current;
1932
1933	GCoroAPI = &coroapi;
1934	sv_setiv (sv, (IV)&coroapi);
1935	SvREADONLY_on (sv);
1936	}
1937	}
1938
1939	void
1940	_set_current (SV *current)
1941	PROTOTYPE: $
1942	CODE:
1943	SvREFCNT_dec (SvRV (coro_current));
1944	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1945
1946	void
1947	_set_readyhook (SV *hook)
1948	PROTOTYPE: $
1949	CODE:
1950	LOCK;
1951	SvREFCNT_dec (coro_readyhook);
1952	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1953	UNLOCK;
1954
1955	int
1956	prio (Coro::State coro, int newprio = 0)
1957	ALIAS:
1958	nice = 1
1959	CODE:
1960	{
1961	RETVAL = coro->prio;
1962
1963	if (items > 1)
1964	{
1965	if (ix)
1966	newprio = coro->prio - newprio;
1967
1968	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1969	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1970
1971	coro->prio = newprio;
1972	}
1973	}
1974	OUTPUT:
1975	RETVAL
1976
1977	SV *
1978	ready (SV *self)
1979	PROTOTYPE: $
1980	CODE:
1981	RETVAL = boolSV (api_ready (self));
1982	OUTPUT:
1983	RETVAL
1984
1985	int
1986	nready (...)
1987	PROTOTYPE:
1988	CODE:
1989	RETVAL = coro_nready;
1990	OUTPUT:
1991	RETVAL
1992
1993	void
1994	throw (Coro::State self, SV *throw = &PL_sv_undef)
1995	PROTOTYPE: $;$
1996	CODE:
1997	SvREFCNT_dec (self->throw);
1998	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1999
2000	void	2223	void
2001	swap_defsv (Coro::State self)	2224	swap_defsv (Coro::State self)
2002	PROTOTYPE: $	2225	PROTOTYPE: $
2003	ALIAS:	2226	ALIAS:
2004	swap_defav = 1	2227	swap_defav = 1
…		…
2011	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2234	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2012		2235
2013	SV *tmp = *src; *src = *dst; *dst = tmp;	2236	SV *tmp = *src; *src = *dst; *dst = tmp;
2014	}	2237	}
2015		2238
		2239	MODULE = Coro::State PACKAGE = Coro
		2240
		2241	BOOT:
		2242	{
		2243	int i;
		2244
		2245	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2246	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2247	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2248
		2249	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2250	SvREADONLY_on (coro_current);
		2251
		2252	coro_stash = gv_stashpv ("Coro", TRUE);
		2253
		2254	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		2255	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		2256	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		2257	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		2258	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		2259	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		2260
		2261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		2262	coro_ready[i] = newAV ();
		2263
		2264	{
		2265	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
		2266
		2267	coroapi.schedule = api_schedule;
		2268	coroapi.cede = api_cede;
		2269	coroapi.cede_notself = api_cede_notself;
		2270	coroapi.ready = api_ready;
		2271	coroapi.is_ready = api_is_ready;
		2272	coroapi.nready = &coro_nready;
		2273	coroapi.current = coro_current;
		2274
		2275	GCoroAPI = &coroapi;
		2276	sv_setiv (sv, (IV)&coroapi);
		2277	SvREADONLY_on (sv);
		2278	}
		2279	}
		2280
		2281	void
		2282	_set_current (SV *current)
		2283	PROTOTYPE: $
		2284	CODE:
		2285	SvREFCNT_dec (SvRV (coro_current));
		2286	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2287
		2288	void
		2289	_set_readyhook (SV *hook)
		2290	PROTOTYPE: $
		2291	CODE:
		2292	LOCK;
		2293	SvREFCNT_dec (coro_readyhook);
		2294	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2295	UNLOCK;
		2296
		2297	int
		2298	prio (Coro::State coro, int newprio = 0)
		2299	ALIAS:
		2300	nice = 1
		2301	CODE:
		2302	{
		2303	RETVAL = coro->prio;
		2304
		2305	if (items > 1)
		2306	{
		2307	if (ix)
		2308	newprio = coro->prio - newprio;
		2309
		2310	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		2311	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		2312
		2313	coro->prio = newprio;
		2314	}
		2315	}
		2316	OUTPUT:
		2317	RETVAL
		2318
		2319	SV *
		2320	ready (SV *self)
		2321	PROTOTYPE: $
		2322	CODE:
		2323	RETVAL = boolSV (api_ready (self));
		2324	OUTPUT:
		2325	RETVAL
		2326
		2327	int
		2328	nready (...)
		2329	PROTOTYPE:
		2330	CODE:
		2331	RETVAL = coro_nready;
		2332	OUTPUT:
		2333	RETVAL
		2334
2016	# for async_pool speedup	2335	# for async_pool speedup
2017	void	2336	void
2018	_pool_1 (SV *cb)	2337	_pool_1 (SV *cb)
2019	CODE:	2338	CODE:
2020	{	2339	{
…		…
2025	AV *invoke_av;	2344	AV *invoke_av;
2026	int i, len;	2345	int i, len;
2027		2346
2028	if (!invoke)	2347	if (!invoke)
2029	{	2348	{
2030	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2349	SV *old = PL_diehook;
		2350	PL_diehook = 0;
		2351	SvREFCNT_dec (old);
2031	croak ("\3async_pool terminate\2\n");	2352	croak ("\3async_pool terminate\2\n");
2032	}	2353	}
2033		2354
2034	SvREFCNT_dec (coro->saved_deffh);	2355	SvREFCNT_dec (coro->saved_deffh);
2035	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2356	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2036		2357
2037	hv_store (hv, "desc", sizeof ("desc") - 1,	2358	hv_store (hv, "desc", sizeof ("desc") - 1,
2038	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2359	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2039		2360
2040	invoke_av = (AV *)SvRV (invoke);	2361	invoke_av = (AV *)SvRV (invoke);
…		…
2044		2365
2045	if (len > 0)	2366	if (len > 0)
2046	{	2367	{
2047	av_fill (defav, len - 1);	2368	av_fill (defav, len - 1);
2048	for (i = 0; i < len; ++i)	2369	for (i = 0; i < len; ++i)
2049	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2370	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2050	}	2371	}
2051		2372
2052	SvREFCNT_dec (invoke);	2373	SvREFCNT_dec (invoke);
2053	}	2374	}
2054		2375
…		…
2061	sv_setsv (cb, &PL_sv_undef);	2382	sv_setsv (cb, &PL_sv_undef);
2062		2383
2063	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2384	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2064	coro->saved_deffh = 0;	2385	coro->saved_deffh = 0;
2065		2386
2066	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2387	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2067	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2388	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2068	{	2389	{
2069	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2390	SV *old = PL_diehook;
		2391	PL_diehook = 0;
		2392	SvREFCNT_dec (old);
2070	croak ("\3async_pool terminate\2\n");	2393	croak ("\3async_pool terminate\2\n");
2071	}	2394	}
2072		2395
2073	av_clear (GvAV (PL_defgv));	2396	av_clear (GvAV (PL_defgv));
2074	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2397	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
2080	api_trace (coro_current, 0);	2403	api_trace (coro_current, 0);
2081		2404
2082	av_push (av_async_pool, newSVsv (coro_current));	2405	av_push (av_async_pool, newSVsv (coro_current));
2083	}	2406	}
2084		2407
		2408	#if 0
		2409
		2410	void
		2411	_generator_call (...)
		2412	PROTOTYPE: @
		2413	PPCODE:
		2414	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2415	xxxx
		2416	abort ();
		2417
		2418	SV *
		2419	gensub (SV *sub, ...)
		2420	PROTOTYPE: &;@
		2421	CODE:
		2422	{
		2423	struct coro *coro;
		2424	MAGIC *mg;
		2425	CV *xcv;
		2426	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2427	int i;
		2428
		2429	CvGV (ncv) = CvGV (cv);
		2430	CvFILE (ncv) = CvFILE (cv);
		2431
		2432	Newz (0, coro, 1, struct coro);
		2433	coro->args = newAV ();
		2434	coro->flags = CF_NEW;
		2435
		2436	av_extend (coro->args, items - 1);
		2437	for (i = 1; i < items; i++)
		2438	av_push (coro->args, newSVsv (ST (i)));
		2439
		2440	CvISXSUB_on (ncv);
		2441	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2442
		2443	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2444
		2445	CvXSUB (ncv) = CvXSUB (xcv);
		2446	CvANON_on (ncv);
		2447
		2448	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2449	RETVAL = newRV_noinc ((SV *)ncv);
		2450	}
		2451	OUTPUT:
		2452	RETVAL
		2453
		2454	#endif
		2455
2085		2456
2086	MODULE = Coro::State PACKAGE = Coro::AIO	2457	MODULE = Coro::State PACKAGE = Coro::AIO
2087		2458
2088	SV *	2459	void
2089	_get_state ()	2460	_get_state (SV *self)
2090	CODE:	2461	PPCODE:
2091	{	2462	{
2092	struct io_state *data;	2463	AV *defav = GvAV (PL_defgv);
2093		2464	AV *av = newAV ();
		2465	int i;
2094	RETVAL = newSV (sizeof (struct io_state));	2466	SV *data_sv = newSV (sizeof (struct io_state));
2095	data = (struct io_state *)SvPVX (RETVAL);	2467	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2096	SvCUR_set (RETVAL, sizeof (struct io_state));	2468	SvCUR_set (data_sv, sizeof (struct io_state));
2097	SvPOK_only (RETVAL);	2469	SvPOK_only (data_sv);
2098		2470
2099	data->errorno = errno;	2471	data->errorno = errno;
2100	data->laststype = PL_laststype;	2472	data->laststype = PL_laststype;
2101	data->laststatval = PL_laststatval;	2473	data->laststatval = PL_laststatval;
2102	data->statcache = PL_statcache;	2474	data->statcache = PL_statcache;
		2475
		2476	av_extend (av, AvFILLp (defav) + 1 + 1);
		2477
		2478	for (i = 0; i <= AvFILLp (defav); ++i)
		2479	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2480
		2481	av_push (av, data_sv);
		2482
		2483	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2484
		2485	api_ready (self);
2103	}	2486	}
2104	OUTPUT:
2105	RETVAL
2106		2487
2107	void	2488	void
2108	_set_state (char *data_)	2489	_set_state (SV *state)
2109	PROTOTYPE: $	2490	PROTOTYPE: $
2110	CODE:	2491	PPCODE:
2111	{	2492	{
2112	struct io_state *data = (void *)data_;	2493	AV *av = (AV *)SvRV (state);
		2494	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2495	int i;
2113		2496
2114	errno = data->errorno;	2497	errno = data->errorno;
2115	PL_laststype = data->laststype;	2498	PL_laststype = data->laststype;
2116	PL_laststatval = data->laststatval;	2499	PL_laststatval = data->laststatval;
2117	PL_statcache = data->statcache;	2500	PL_statcache = data->statcache;
		2501
		2502	EXTEND (SP, AvFILLp (av));
		2503	for (i = 0; i < AvFILLp (av); ++i)
		2504	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2118	}	2505	}
2119		2506
2120		2507
2121	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2508	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2122		2509
…		…
2146	}	2533	}
2147		2534
2148	--incede;	2535	--incede;
2149	}	2536	}
2150		2537
		2538
		2539	MODULE = Coro::State PACKAGE = PerlIO::cede
		2540
		2541	BOOT:
		2542	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2543

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