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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.238 by root, Sat May 31 12:10:55 2008 UTC vs.
Revision 1.265 by root, Fri Nov 14 02:42:26 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
92
93	/* 5.11 */
94	#ifndef CxHASARGS
95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96	#endif	99	#endif
97		100
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)
…		…
120		123
121	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
122		125
123	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
124	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
127	#else	130	#else
128	# define attribute(x)	131	# define attribute(x)
129	# define BARRIER
130	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
131	#endif	134	#endif
132		135
133	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
134	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
135		138
136	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
137		140
138	#include "CoroAPI.h"	141	#include "CoroAPI.h"
139		142
140	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
141	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	147	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		148	# if CORO_PTHREAD
		149	static void *coro_thx;
		150	# endif
		151
144	#else	152	#else
		153
145	# define LOCK (void)0	154	# define LOCK (void)0
146	# define UNLOCK (void)0	155	# define UNLOCK (void)0
		156
147	#endif	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
148		163
149	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
150	struct io_state	165	struct io_state
151	{	166	{
		167	AV *res;
152	int errorno;	168	int errorno;
153	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
154	int laststatval;	170	int laststatval;
155	Stat_t statcache;	171	Stat_t statcache;
156	};	172	};
157		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
158	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed after next transfer */	182	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		183	static volatile struct coro *transfer_next;
		184
		185	struct transfer_args
		186	{
		187	struct coro *prev, *next;
		188	};
164		189
165	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	192	static SV *rv_diehook;
168	static SV *rv_warnhook;	193	static SV *rv_warnhook;
…		…
200	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	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 */	226	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202	JMPENV *top_env;	227	JMPENV *top_env;
203	coro_context cctx;	228	coro_context cctx;
204		229
		230	U32 gen;
205	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
206	int valgrind_id;	232	int valgrind_id;
207	#endif	233	#endif
208	unsigned char flags;	234	unsigned char flags;
209	} coro_cctx;	235	} coro_cctx;
…		…
269	#define PRIO_MIN -4	295	#define PRIO_MIN -4
270		296
271	/* for Coro.pm */	297	/* for Coro.pm */
272	static SV *coro_current;	298	static SV *coro_current;
273	static SV *coro_readyhook;	299	static SV *coro_readyhook;
274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275	static int coro_nready;	301	static int coro_nready;
276	static struct coro *coro_first;	302	static struct coro *coro_first;
277		303
278	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
279		305
…		…
321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322	#endif	348	#endif
323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324	--AvFILLp (padlist);	350	--AvFILLp (padlist);
325		351
326	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
328		354
329	return newpadlist;	355	return newpadlist;
330	}	356	}
331		357
…		…
361		387
362	/* casting is fun. */	388	/* casting is fun. */
363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
365		391
		392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		393
366	return 0;	394	return 0;
367	}	395	}
368		396
369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370	#define CORO_MAGIC_type_state PERL_MAGIC_ext	398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
372	static MGVTBL coro_cv_vtbl = {	400	static MGVTBL coro_cv_vtbl = {
373	0, 0, 0, 0,	401	0, 0, 0, 0,
374	coro_cv_free	402	coro_cv_free
375	};	403	};
376		404
377	#define CORO_MAGIC(sv,type) \	405	#define CORO_MAGIC(sv, type) \
378	SvMAGIC (sv) \	406	SvMAGIC (sv) \
379	? SvMAGIC (sv)->mg_type == type \	407	? SvMAGIC (sv)->mg_type == type \
380	? SvMAGIC (sv) \	408	? SvMAGIC (sv) \
381	: mg_find (sv, type) \	409	: mg_find (sv, type) \
382	: 0	410	: 0
383		411
384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	412	#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)	413	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386		414
387	static struct coro *	415	INLINE struct coro *
388	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
389	{	417	{
390	HV *stash;	418	HV *stash;
391	MAGIC *mg;	419	MAGIC *mg;
392		420
…		…
420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422	else	450	else
423	{	451	{
424	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
425	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
426	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
427	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
428	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
429	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
430	#else	459	#else
…		…
616		645
617	/*	646	/*
618	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
619	*/	648	*/
620	static void	649	static void
621	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
622	{	651	{
623	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
624	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
625		654
626	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
663	#undef VAR	692	#undef VAR
664	}	693	}
665	else	694	else
666	slot = coro->slot;	695	slot = coro->slot;
667		696
		697	if (slot)
		698	{
668	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	701	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
674	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
675		706
676	#if !PERL_VERSION_ATLEAST (5,10,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
677	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
678	#endif	709	#endif
		710	}
679	}	711	}
680		712
681	return rss;	713	return rss;
		714	}
		715
		716	/** set stacklevel support **************************************************/
		717
		718	/* we sometimes need to create the effect of pp_set_stacklevel calling us */
		719	#define SSL_HEAD (void)0
		720	/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
		721	#define SSL_TAIL set_stacklevel_tail (aTHX)
		722
		723	INLINE void
		724	set_stacklevel_tail (pTHX)
		725	{
		726	dSP;
		727	int gimme = GIMME_V;
		728
		729	if (gimme == G_SCALAR)
		730	XPUSHs (&PL_sv_undef);
		731
		732	PUTBACK;
682	}	733	}
683		734
684	/** coroutine stack handling ************************************************/	735	/** coroutine stack handling ************************************************/
685		736
686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	737	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);	738	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		739	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
688		740
689	/* apparently < 5.8.8 */	741	/* apparently < 5.8.8 */
690	#undef MgPV_nolen_const
691	#ifndef MgPV_nolen_const	742	#ifndef MgPV_nolen_const
692	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \	743	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
693	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \	744	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
694	(const char*)(mg)->mg_ptr)	745	(const char*)(mg)->mg_ptr)
695	#endif	746	#endif
696		747
697	/*	748	/*
698	* This overrides the default magic get method of %SIG elements.	749	* This overrides the default magic get method of %SIG elements.
…		…
708	{	759	{
709	const char *s = MgPV_nolen_const (mg);	760	const char *s = MgPV_nolen_const (mg);
710		761
711	if (*s == '_')	762	if (*s == '_')
712	{	763	{
713	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	764	SV **svp = 0;
714	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;	765
		766	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		767	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		768
		769	if (svp)
		770	{
		771	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		772	return 0;
		773	}
715	}	774	}
716		775
717	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;	776	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		777	}
		778
		779	static int
		780	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		781	{
		782	const char *s = MgPV_nolen_const (mg);
		783
		784	if (*s == '_')
		785	{
		786	SV **svp = 0;
		787
		788	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		789	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		790
		791	if (svp)
		792	{
		793	SV *old = *svp;
		794	*svp = 0;
		795	SvREFCNT_dec (old);
		796	return 0;
		797	}
		798	}
		799
		800	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
718	}	801	}
719		802
720	static int	803	static int
721	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	804	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
722	{	805	{
…		…
769	GvSV (PL_defgv) = newSV (0);	852	GvSV (PL_defgv) = newSV (0);
770	GvAV (PL_defgv) = coro->args; coro->args = 0;	853	GvAV (PL_defgv) = coro->args; coro->args = 0;
771	GvSV (PL_errgv) = newSV (0);	854	GvSV (PL_errgv) = newSV (0);
772	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	855	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
773	PL_rs = newSVsv (GvSV (irsgv));	856	PL_rs = newSVsv (GvSV (irsgv));
774	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	857	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
775		858
776	{	859	{
777	dSP;	860	dSP;
778	LOGOP myop;	861	UNOP myop;
779		862
780	Zero (&myop, 1, LOGOP);	863	Zero (&myop, 1, UNOP);
781	myop.op_next = Nullop;	864	myop.op_next = Nullop;
782	myop.op_flags = OPf_WANT_VOID;	865	myop.op_flags = OPf_WANT_VOID;
783		866
784	PUSHMARK (SP);	867	PUSHMARK (SP);
785	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
788	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
789	SPAGAIN;	872	SPAGAIN;
790	}	873	}
791		874
792	/* this newly created coroutine might be run on an existing cctx which most	875	/* this newly created coroutine might be run on an existing cctx which most
793	* likely was suspended in set_stacklevel, called from entersub.	876	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
794	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	877	* so we have to emulate entering pp_set_stacklevel here.
795	* so we ENTER here for symmetry
796	*/	878	*/
797	ENTER;	879	SSL_HEAD;
798	}	880	}
799		881
800	static void	882	static void
801	coro_destroy (pTHX_ struct coro *coro)	883	coro_destruct (pTHX_ struct coro *coro)
802	{	884	{
803	if (!IN_DESTRUCT)	885	if (!IN_DESTRUCT)
804	{	886	{
805	/* restore all saved variables and stuff */	887	/* restore all saved variables and stuff */
806	LEAVE_SCOPE (0);	888	LEAVE_SCOPE (0);
…		…
828	SvREFCNT_dec (PL_warnhook);	910	SvREFCNT_dec (PL_warnhook);
829		911
830	SvREFCNT_dec (coro->saved_deffh);	912	SvREFCNT_dec (coro->saved_deffh);
831	SvREFCNT_dec (coro->throw);	913	SvREFCNT_dec (coro->throw);
832		914
833	coro_destroy_stacks (aTHX);	915	coro_destruct_stacks (aTHX);
834	}	916	}
835		917
836	static void	918	INLINE void
837	free_coro_mortal (pTHX)	919	free_coro_mortal (pTHX)
838	{	920	{
839	if (expect_true (coro_mortal))	921	if (expect_true (coro_mortal))
840	{	922	{
841	SvREFCNT_dec (coro_mortal);	923	SvREFCNT_dec (coro_mortal);
…		…
875	: cx->blk_gimme == G_SCALAR ? bot + 1	957	: cx->blk_gimme == G_SCALAR ? bot + 1
876	: bot;	958	: bot;
877		959
878	av_extend (av, top - bot);	960	av_extend (av, top - bot);
879	while (bot < top)	961	while (bot < top)
880	av_push (av, SvREFCNT_inc (*bot++));	962	av_push (av, SvREFCNT_inc_NN (*bot++));
881		963
882	PL_runops = RUNOPS_DEFAULT;	964	PL_runops = RUNOPS_DEFAULT;
883	ENTER;	965	ENTER;
884	SAVETMPS;	966	SAVETMPS;
885	EXTEND (SP, 3);	967	EXTEND (SP, 3);
…		…
965		1047
966	TAINT_NOT;	1048	TAINT_NOT;
967	return 0;	1049	return 0;
968	}	1050	}
969		1051
		1052	static void
		1053	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1054	{
		1055	ta->prev = (struct coro *)cctx;
		1056	ta->next = 0;
		1057	}
		1058
970	/* inject a fake call to Coro::State::_cctx_init into the execution */	1059	/* inject a fake call to Coro::State::_cctx_init into the execution */
971	/* _cctx_init should be careful, as it could be called at almost any time */	1060	/* _cctx_init should be careful, as it could be called at almost any time */
972	/* during execution of a perl program */	1061	/* during execution of a perl program */
		1062	/* also initialises PL_top_env */
973	static void NOINLINE	1063	static void NOINLINE
974	cctx_prepare (pTHX_ coro_cctx *cctx)	1064	cctx_prepare (pTHX_ coro_cctx *cctx)
975	{	1065	{
976	dSP;	1066	dSP;
977	LOGOP myop;	1067	UNOP myop;
978		1068
979	PL_top_env = &PL_start_env;	1069	PL_top_env = &PL_start_env;
980		1070
981	if (cctx->flags & CC_TRACE)	1071	if (cctx->flags & CC_TRACE)
982	PL_runops = runops_trace;	1072	PL_runops = runops_trace;
983		1073
984	Zero (&myop, 1, LOGOP);	1074	Zero (&myop, 1, UNOP);
985	myop.op_next = PL_op;	1075	myop.op_next = PL_op;
986	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1076	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
987		1077
988	PUSHMARK (SP);	1078	PUSHMARK (SP);
989	EXTEND (SP, 2);	1079	EXTEND (SP, 2);
990	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1080	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
991	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1081	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
992	PUTBACK;	1082	PUTBACK;
993	PL_op = (OP *)&myop;	1083	PL_op = (OP *)&myop;
994	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1084	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
995	SPAGAIN;	1085	SPAGAIN;
996	}	1086	}
997		1087
		1088	/* the tail of transfer: execute stuff we can only do after a transfer */
		1089	INLINE void
		1090	transfer_tail (pTHX)
		1091	{
		1092	struct coro *next = (struct coro *)transfer_next;
		1093	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1094	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1095
		1096	free_coro_mortal (aTHX);
		1097	UNLOCK;
		1098
		1099	if (expect_false (next->throw))
		1100	{
		1101	SV *exception = sv_2mortal (next->throw);
		1102
		1103	next->throw = 0;
		1104	sv_setsv (ERRSV, exception);
		1105	croak (0);
		1106	}
		1107	}
		1108
998	/*	1109	/*
999	* this is a _very_ stripped down perl interpreter ;)	1110	* this is a _very_ stripped down perl interpreter ;)
1000	*/	1111	*/
1001	static void	1112	static void
1002	cctx_run (void *arg)	1113	cctx_run (void *arg)
1003	{	1114	{
		1115	#ifdef USE_ITHREADS
		1116	# if CORO_PTHREAD
		1117	PERL_SET_CONTEXT (coro_thx);
		1118	# endif
		1119	#endif
		1120	{
1004	dTHX;	1121	dTHX;
1005		1122
1006	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1123	/* we are the alternative tail to pp_set_stacklevel */
1007	UNLOCK;	1124	/* so do the same things here */
		1125	SSL_TAIL;
1008		1126
1009	/* we now skip the entersub that lead to transfer() */	1127	/* we now skip the op that did lead to transfer() */
1010	PL_op = PL_op->op_next;	1128	PL_op = PL_op->op_next;
1011		1129
1012	/* inject a fake subroutine call to cctx_init */	1130	/* inject a fake subroutine call to cctx_init */
1013	cctx_prepare (aTHX_ (coro_cctx *)arg);	1131	cctx_prepare (aTHX_ (coro_cctx *)arg);
1014		1132
		1133	/* cctx_run is the alternative tail of transfer() */
		1134	transfer_tail (aTHX);
		1135
1015	/* somebody or something will hit me for both perl_run and PL_restartop */	1136	/* somebody or something will hit me for both perl_run and PL_restartop */
1016	PL_restartop = PL_op;	1137	PL_restartop = PL_op;
1017	perl_run (PL_curinterp);	1138	perl_run (PL_curinterp);
1018		1139
1019	/*	1140	/*
1020	* If perl-run returns we assume exit() was being called or the coro	1141	* If perl-run returns we assume exit() was being called or the coro
1021	* fell off the end, which seems to be the only valid (non-bug)	1142	* fell off the end, which seems to be the only valid (non-bug)
1022	* reason for perl_run to return. We try to exit by jumping to the	1143	* reason for perl_run to return. We try to exit by jumping to the
1023	* bootstrap-time "top" top_env, as we cannot restore the "main"	1144	* bootstrap-time "top" top_env, as we cannot restore the "main"
1024	* coroutine as Coro has no such concept	1145	* coroutine as Coro has no such concept
1025	*/	1146	*/
1026	PL_top_env = main_top_env;	1147	PL_top_env = main_top_env;
1027	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1148	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1149	}
1028	}	1150	}
1029		1151
1030	static coro_cctx *	1152	static coro_cctx *
1031	cctx_new ()	1153	cctx_new ()
1032	{	1154	{
1033	coro_cctx *cctx;	1155	coro_cctx *cctx;
		1156
		1157	++cctx_count;
		1158	New (0, cctx, 1, coro_cctx);
		1159
		1160	cctx->gen = cctx_gen;
		1161	cctx->flags = 0;
		1162	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1163
		1164	return cctx;
		1165	}
		1166
		1167	/* create a new cctx only suitable as source */
		1168	static coro_cctx *
		1169	cctx_new_empty ()
		1170	{
		1171	coro_cctx *cctx = cctx_new ();
		1172
		1173	cctx->sptr = 0;
		1174	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1175
		1176	return cctx;
		1177	}
		1178
		1179	/* create a new cctx suitable as destination/running a perl interpreter */
		1180	static coro_cctx *
		1181	cctx_new_run ()
		1182	{
		1183	coro_cctx *cctx = cctx_new ();
1034	void *stack_start;	1184	void *stack_start;
1035	size_t stack_size;	1185	size_t stack_size;
1036		1186
1037	++cctx_count;
1038
1039	Newz (0, cctx, 1, coro_cctx);
1040
1041	#if HAVE_MMAP	1187	#if HAVE_MMAP
1042	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1188	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1043	/* mmap supposedly does allocate-on-write for us */	1189	/* mmap supposedly does allocate-on-write for us */
1044	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1190	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1045		1191
1046	if (cctx->sptr != (void *)-1)	1192	if (cctx->sptr != (void *)-1)
1047	{	1193	{
1048	# if CORO_STACKGUARD	1194	#if CORO_STACKGUARD
1049	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1195	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1050	# endif	1196	#endif
1051	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1197	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1052	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1198	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1053	cctx->flags |= CC_MAPPED;	1199	cctx->flags |= CC_MAPPED;
1054	}	1200	}
1055	else	1201	else
1056	#endif	1202	#endif
1057	{	1203	{
1058	cctx->ssize = coro_stacksize * (long)sizeof (long);	1204	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1059	New (0, cctx->sptr, coro_stacksize, long);	1205	New (0, cctx->sptr, cctx_stacksize, long);
1060		1206
1061	if (!cctx->sptr)	1207	if (!cctx->sptr)
1062	{	1208	{
1063	perror ("FATAL: unable to allocate stack for coroutine");	1209	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1064	_exit (EXIT_FAILURE);	1210	_exit (EXIT_FAILURE);
1065	}	1211	}
1066		1212
1067	stack_start = cctx->sptr;	1213	stack_start = cctx->sptr;
1068	stack_size = cctx->ssize;	1214	stack_size = cctx->ssize;
1069	}	1215	}
1070		1216
1071	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1217	#if CORO_USE_VALGRIND
		1218	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1219	#endif
		1220
1072	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1221	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1073		1222
1074	return cctx;	1223	return cctx;
1075	}	1224	}
1076		1225
…		…
1079	{	1228	{
1080	if (!cctx)	1229	if (!cctx)
1081	return;	1230	return;
1082		1231
1083	--cctx_count;	1232	--cctx_count;
		1233	coro_destroy (&cctx->cctx);
1084		1234
		1235	/* coro_transfer creates new, empty cctx's */
		1236	if (cctx->sptr)
		1237	{
1085	#if CORO_USE_VALGRIND	1238	#if CORO_USE_VALGRIND
1086	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1239	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1087	#endif	1240	#endif
1088		1241
1089	#if HAVE_MMAP	1242	#if HAVE_MMAP
1090	if (cctx->flags & CC_MAPPED)	1243	if (cctx->flags & CC_MAPPED)
1091	munmap (cctx->sptr, cctx->ssize);	1244	munmap (cctx->sptr, cctx->ssize);
1092	else	1245	else
1093	#endif	1246	#endif
1094	Safefree (cctx->sptr);	1247	Safefree (cctx->sptr);
		1248	}
1095		1249
1096	Safefree (cctx);	1250	Safefree (cctx);
1097	}	1251	}
1098		1252
1099	/* wether this cctx should be destructed */	1253	/* wether this cctx should be destructed */
1100	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1254	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1101		1255
1102	static coro_cctx *	1256	static coro_cctx *
1103	cctx_get (pTHX)	1257	cctx_get (pTHX)
1104	{	1258	{
1105	while (expect_true (cctx_first))	1259	while (expect_true (cctx_first))
…		…
1112	return cctx;	1266	return cctx;
1113		1267
1114	cctx_destroy (cctx);	1268	cctx_destroy (cctx);
1115	}	1269	}
1116		1270
1117	return cctx_new ();	1271	return cctx_new_run ();
1118	}	1272	}
1119		1273
1120	static void	1274	static void
1121	cctx_put (coro_cctx *cctx)	1275	cctx_put (coro_cctx *cctx)
1122	{	1276	{
		1277	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1278
1123	/* free another cctx if overlimit */	1279	/* free another cctx if overlimit */
1124	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1280	if (expect_false (cctx_idle >= cctx_max_idle))
1125	{	1281	{
1126	coro_cctx *first = cctx_first;	1282	coro_cctx *first = cctx_first;
1127	cctx_first = first->next;	1283	cctx_first = first->next;
1128	--cctx_idle;	1284	--cctx_idle;
1129		1285
…		…
1161	/* always use the TRANSFER macro */	1317	/* always use the TRANSFER macro */
1162	static void NOINLINE	1318	static void NOINLINE
1163	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1319	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1164	{	1320	{
1165	dSTACKLEVEL;	1321	dSTACKLEVEL;
1166	static volatile int has_throw;
1167		1322
1168	/* sometimes transfer is only called to set idle_sp */	1323	/* sometimes transfer is only called to set idle_sp */
1169	if (expect_false (!next))	1324	if (expect_false (!next))
1170	{	1325	{
1171	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1326	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1175	{	1330	{
1176	coro_cctx *prev__cctx;	1331	coro_cctx *prev__cctx;
1177		1332
1178	if (expect_false (prev->flags & CF_NEW))	1333	if (expect_false (prev->flags & CF_NEW))
1179	{	1334	{
1180	/* create a new empty context */	1335	/* create a new empty/source context */
1181	Newz (0, prev->cctx, 1, coro_cctx);	1336	prev->cctx = cctx_new_empty ();
1182	prev->flags &= ~CF_NEW;	1337	prev->flags &= ~CF_NEW;
1183	prev->flags |= CF_RUNNING;	1338	prev->flags |= CF_RUNNING;
1184	}	1339	}
1185		1340
1186	prev->flags &= ~CF_RUNNING;	1341	prev->flags &= ~CF_RUNNING;
…		…
1201	else	1356	else
1202	load_perl (aTHX_ next);	1357	load_perl (aTHX_ next);
1203		1358
1204	prev__cctx = prev->cctx;	1359	prev__cctx = prev->cctx;
1205		1360
1206	/* possibly "free" the cctx */	1361	/* possibly untie and reuse the cctx */
1207	if (expect_true (	1362	if (expect_true (
1208	prev__cctx->idle_sp == STACKLEVEL	1363	prev__cctx->idle_sp == STACKLEVEL
1209	&& !(prev__cctx->flags & CC_TRACE)	1364	&& !(prev__cctx->flags & CC_TRACE)
1210	&& !force_cctx	1365	&& !force_cctx
1211	))	1366	))
1212	{	1367	{
1213	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1368	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1214	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1369	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1215		1370
1216	prev->cctx = 0;	1371	prev->cctx = 0;
1217		1372
1218	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1373	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1219	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1374	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1227	++next->usecount;	1382	++next->usecount;
1228		1383
1229	if (expect_true (!next->cctx))	1384	if (expect_true (!next->cctx))
1230	next->cctx = cctx_get (aTHX);	1385	next->cctx = cctx_get (aTHX);
1231		1386
1232	has_throw = !!next->throw;	1387	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1388	transfer_next = next;
1233		1389
1234	if (expect_false (prev__cctx != next->cctx))	1390	if (expect_false (prev__cctx != next->cctx))
1235	{	1391	{
1236	prev__cctx->top_env = PL_top_env;	1392	prev__cctx->top_env = PL_top_env;
1237	PL_top_env = next->cctx->top_env;	1393	PL_top_env = next->cctx->top_env;
1238	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1394	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1239	}	1395	}
1240		1396
1241	free_coro_mortal (aTHX);	1397	transfer_tail (aTHX);
1242	UNLOCK;
1243
1244	if (expect_false (has_throw))
1245	{
1246	struct coro *coro = SvSTATE (coro_current);
1247
1248	if (coro->throw)
1249	{
1250	SV *exception = coro->throw;
1251	coro->throw = 0;
1252	sv_setsv (ERRSV, exception);
1253	croak (0);
1254	}
1255	}
1256	}	1398	}
1257	}	1399	}
1258
1259	struct transfer_args
1260	{
1261	struct coro *prev, *next;
1262	};
1263		1400
1264	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1401	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1265	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1402	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1266		1403
1267	/** high level stuff ********************************************************/	1404	/** high level stuff ********************************************************/
…		…
1293	croak ("FATAL: tried to destroy currently running coroutine");	1430	croak ("FATAL: tried to destroy currently running coroutine");
1294		1431
1295	save_perl (aTHX_ &temp);	1432	save_perl (aTHX_ &temp);
1296	load_perl (aTHX_ coro);	1433	load_perl (aTHX_ coro);
1297		1434
1298	coro_destroy (aTHX_ coro);	1435	coro_destruct (aTHX_ coro);
1299		1436
1300	load_perl (aTHX_ &temp);	1437	load_perl (aTHX_ &temp);
1301		1438
1302	coro->slot = 0;	1439	coro->slot = 0;
1303	}	1440	}
…		…
1409	LOCK;	1546	LOCK;
1410		1547
1411	sv_hook = coro_nready ? 0 : coro_readyhook;	1548	sv_hook = coro_nready ? 0 : coro_readyhook;
1412	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1549	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1413		1550
1414	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1551	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1415	++coro_nready;	1552	++coro_nready;
1416		1553
1417	UNLOCK;	1554	UNLOCK;
1418		1555
1419	if (sv_hook)	1556	if (sv_hook)
…		…
1440		1577
1441	static int	1578	static int
1442	api_is_ready (SV *coro_sv)	1579	api_is_ready (SV *coro_sv)
1443	{	1580	{
1444	dTHX;	1581	dTHX;
		1582
1445	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1583	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1446	}	1584	}
1447		1585
1448	static void	1586	INLINE void
1449	prepare_schedule (pTHX_ struct transfer_args *ta)	1587	prepare_schedule (pTHX_ struct transfer_args *ta)
1450	{	1588	{
1451	SV *prev_sv, *next_sv;	1589	SV *prev_sv, *next_sv;
1452		1590
1453	for (;;)	1591	for (;;)
…		…
1479	/* cannot transfer to destroyed coros, skip and look for next */	1617	/* cannot transfer to destroyed coros, skip and look for next */
1480	if (expect_false (ta->next->flags & CF_DESTROYED))	1618	if (expect_false (ta->next->flags & CF_DESTROYED))
1481	{	1619	{
1482	UNLOCK;	1620	UNLOCK;
1483	SvREFCNT_dec (next_sv);	1621	SvREFCNT_dec (next_sv);
1484	/* coro_nready is already taken care of by destroy */	1622	/* coro_nready has already been taken care of by destroy */
1485	continue;	1623	continue;
1486	}	1624	}
1487		1625
1488	--coro_nready;	1626	--coro_nready;
1489	UNLOCK;	1627	UNLOCK;
…		…
1492		1630
1493	/* free this only after the transfer */	1631	/* free this only after the transfer */
1494	prev_sv = SvRV (coro_current);	1632	prev_sv = SvRV (coro_current);
1495	ta->prev = SvSTATE (prev_sv);	1633	ta->prev = SvSTATE (prev_sv);
1496	TRANSFER_CHECK (*ta);	1634	TRANSFER_CHECK (*ta);
1497	assert (ta->next->flags & CF_READY);	1635	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1498	ta->next->flags &= ~CF_READY;	1636	ta->next->flags &= ~CF_READY;
1499	SvRV_set (coro_current, next_sv);	1637	SvRV_set (coro_current, next_sv);
1500		1638
1501	LOCK;	1639	LOCK;
1502	free_coro_mortal (aTHX);	1640	free_coro_mortal (aTHX);
1503	coro_mortal = prev_sv;	1641	coro_mortal = prev_sv;
1504	UNLOCK;	1642	UNLOCK;
1505	}	1643	}
1506		1644
1507	static void	1645	INLINE void
1508	prepare_cede (pTHX_ struct transfer_args *ta)	1646	prepare_cede (pTHX_ struct transfer_args *ta)
1509	{	1647	{
1510	api_ready (coro_current);	1648	api_ready (coro_current);
1511	prepare_schedule (aTHX_ ta);	1649	prepare_schedule (aTHX_ ta);
1512	}	1650	}
…		…
1574	struct coro *coro = SvSTATE (coro_sv);	1712	struct coro *coro = SvSTATE (coro_sv);
1575		1713
1576	if (flags & CC_TRACE)	1714	if (flags & CC_TRACE)
1577	{	1715	{
1578	if (!coro->cctx)	1716	if (!coro->cctx)
1579	coro->cctx = cctx_new ();	1717	coro->cctx = cctx_new_run ();
1580	else if (!(coro->cctx->flags & CC_TRACE))	1718	else if (!(coro->cctx->flags & CC_TRACE))
1581	croak ("cannot enable tracing on coroutine with custom stack");	1719	croak ("cannot enable tracing on coroutine with custom stack");
1582		1720
1583	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1721	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1584	}	1722	}
…		…
1591	else	1729	else
1592	coro->slot->runops = RUNOPS_DEFAULT;	1730	coro->slot->runops = RUNOPS_DEFAULT;
1593	}	1731	}
1594	}	1732	}
1595		1733
		1734	#if 0
		1735	static int
		1736	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1737	{
		1738	AV *padlist;
		1739	AV *av = (AV *)mg->mg_obj;
		1740
		1741	abort ();
		1742
		1743	return 0;
		1744	}
		1745
		1746	static MGVTBL coro_gensub_vtbl = {
		1747	0, 0, 0, 0,
		1748	coro_gensub_free
		1749	};
		1750	#endif
		1751
		1752	/*****************************************************************************/
		1753	/* PerlIO::cede */
		1754
		1755	typedef struct
		1756	{
		1757	PerlIOBuf base;
		1758	NV next, every;
		1759	} PerlIOCede;
		1760
		1761	static IV
		1762	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1763	{
		1764	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1765
		1766	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1767	self->next = nvtime () + self->every;
		1768
		1769	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1770	}
		1771
		1772	static SV *
		1773	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1774	{
		1775	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1776
		1777	return newSVnv (self->every);
		1778	}
		1779
		1780	static IV
		1781	PerlIOCede_flush (pTHX_ PerlIO *f)
		1782	{
		1783	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1784	double now = nvtime ();
		1785
		1786	if (now >= self->next)
		1787	{
		1788	api_cede ();
		1789	self->next = now + self->every;
		1790	}
		1791
		1792	return PerlIOBuf_flush (aTHX_ f);
		1793	}
		1794
		1795	static PerlIO_funcs PerlIO_cede =
		1796	{
		1797	sizeof(PerlIO_funcs),
		1798	"cede",
		1799	sizeof(PerlIOCede),
		1800	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1801	PerlIOCede_pushed,
		1802	PerlIOBuf_popped,
		1803	PerlIOBuf_open,
		1804	PerlIOBase_binmode,
		1805	PerlIOCede_getarg,
		1806	PerlIOBase_fileno,
		1807	PerlIOBuf_dup,
		1808	PerlIOBuf_read,
		1809	PerlIOBuf_unread,
		1810	PerlIOBuf_write,
		1811	PerlIOBuf_seek,
		1812	PerlIOBuf_tell,
		1813	PerlIOBuf_close,
		1814	PerlIOCede_flush,
		1815	PerlIOBuf_fill,
		1816	PerlIOBase_eof,
		1817	PerlIOBase_error,
		1818	PerlIOBase_clearerr,
		1819	PerlIOBase_setlinebuf,
		1820	PerlIOBuf_get_base,
		1821	PerlIOBuf_bufsiz,
		1822	PerlIOBuf_get_ptr,
		1823	PerlIOBuf_get_cnt,
		1824	PerlIOBuf_set_ptrcnt,
		1825	};
		1826
		1827	/*****************************************************************************/
		1828
		1829	static const CV *ssl_cv; /* for quick consistency check */
		1830
		1831	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
		1832	static SV *ssl_arg0;
		1833	static SV *ssl_arg1;
		1834
		1835	/* this restores the stack in the case we patched the entersub, to */
		1836	/* recreate the stack frame as perl will on following calls */
		1837	/* since entersub cleared the stack */
		1838	static OP *
		1839	pp_restore (pTHX)
		1840	{
		1841	dSP;
		1842
		1843	PUSHMARK (SP);
		1844
		1845	EXTEND (SP, 3);
		1846	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
		1847	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
		1848	PUSHs ((SV *)CvGV (ssl_cv));
		1849
		1850	RETURNOP (ssl_restore.op_first);
		1851	}
		1852
		1853	/* declare prototype */
		1854	XS(XS_Coro__State__set_stacklevel);
		1855
		1856	static OP *
		1857	pp_set_stacklevel (pTHX)
		1858	{
		1859	dSP;
		1860	struct transfer_args ta;
		1861	SV **arg = PL_stack_base + TOPMARK + 1;
		1862	int items = SP - arg; /* args without function object */
		1863
		1864	/* do a quick consistency check on the "function" object, and if it isn't */
		1865	/* for us, divert to the real entersub */
		1866	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1867	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1868
		1869	/* pop args */
		1870	SP = PL_stack_base + POPMARK;
		1871
		1872	if (!(PL_op->op_flags & OPf_STACKED))
		1873	{
		1874	/* ampersand-form of call, use @_ instead of stack */
		1875	AV *av = GvAV (PL_defgv);
		1876	arg = AvARRAY (av);
		1877	items = AvFILLp (av) + 1;
		1878	}
		1879
		1880	PUTBACK;
		1881	switch (PL_op->op_private & 7)
		1882	{
		1883	case 0:
		1884	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1885	break;
		1886
		1887	case 1:
		1888	if (items != 2)
		1889	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1890
		1891	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1892	break;
		1893
		1894	case 2:
		1895	prepare_schedule (aTHX_ &ta);
		1896	break;
		1897
		1898	case 3:
		1899	prepare_cede (aTHX_ &ta);
		1900	break;
		1901
		1902	case 4:
		1903	if (!prepare_cede_notself (aTHX_ &ta))
		1904	goto skip;
		1905
		1906	break;
		1907	}
		1908
		1909	TRANSFER (ta, 0);
		1910	SPAGAIN;
		1911
		1912	skip:
		1913	PUTBACK;
		1914	SSL_TAIL;
		1915	SPAGAIN;
		1916	RETURN;
		1917	}
		1918
1596	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1919	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1597		1920
1598	PROTOTYPES: DISABLE	1921	PROTOTYPES: DISABLE
1599
1600	BOOT:
1601	{
1602	#ifdef USE_ITHREADS
1603	MUTEX_INIT (&coro_mutex);
1604	#endif
1605	BOOT_PAGESIZE;
1606
1607	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1608	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1609
1610	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1611	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1612	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1613	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1614
1615	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1616	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1617	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1618
1619	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1620
1621	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1622	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1623	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1624	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1625
1626	main_mainstack = PL_mainstack;
1627	main_top_env = PL_top_env;
1628
1629	while (main_top_env->je_prev)
1630	main_top_env = main_top_env->je_prev;
1631
1632	coroapi.ver = CORO_API_VERSION;
1633	coroapi.rev = CORO_API_REVISION;
1634	coroapi.transfer = api_transfer;
1635
1636	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1637	}
1638
1639	SV *
1640	new (char *klass, ...)
1641	CODE:
1642	{
1643	struct coro *coro;
1644	MAGIC *mg;
1645	HV *hv;
1646	int i;
1647
1648	Newz (0, coro, 1, struct coro);
1649	coro->args = newAV ();
1650	coro->flags = CF_NEW;
1651
1652	if (coro_first) coro_first->prev = coro;
1653	coro->next = coro_first;
1654	coro_first = coro;
1655
1656	coro->hv = hv = newHV ();
1657	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1658	mg->mg_flags |= MGf_DUP;
1659	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1660
1661	av_extend (coro->args, items - 1);
1662	for (i = 1; i < items; i++)
1663	av_push (coro->args, newSVsv (ST (i)));
1664	}
1665	OUTPUT:
1666	RETVAL
1667		1922
1668	# these not obviously related functions are all rolled into the same xs	1923	# these not obviously related functions are all rolled into the same xs
1669	# function to increase chances that they all will call transfer with the same	1924	# function to increase chances that they all will call transfer with the same
1670	# stack offset	1925	# stack offset
1671	void	1926	void
…		…
1675	Coro::schedule = 2	1930	Coro::schedule = 2
1676	Coro::cede = 3	1931	Coro::cede = 3
1677	Coro::cede_notself = 4	1932	Coro::cede_notself = 4
1678	CODE:	1933	CODE:
1679	{	1934	{
1680	struct transfer_args ta;	1935	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1681		1936
1682	PUTBACK;	1937	/* we patch the op, and then re-run the whole call */
1683	switch (ix)	1938	/* we have to put some dummy argument on the stack for this to work */
		1939	/* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
		1940	ssl_restore.op_next = (OP *)&ssl_restore;
		1941	ssl_restore.op_type = OP_NULL;
		1942	ssl_restore.op_ppaddr = pp_restore;
		1943	ssl_restore.op_first = PL_op;
		1944
		1945	ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
		1946	ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
		1947
		1948	PL_op->op_ppaddr = pp_set_stacklevel;
		1949	PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
		1950
		1951	PL_op = (OP *)&ssl_restore;
		1952	}
		1953
		1954	BOOT:
		1955	{
		1956	#ifdef USE_ITHREADS
		1957	MUTEX_INIT (&coro_lock);
		1958	# if CORO_PTHREAD
		1959	coro_thx = PERL_GET_CONTEXT;
		1960	# endif
		1961	#endif
		1962	BOOT_PAGESIZE;
		1963
		1964	ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
		1965
		1966	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1967	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1968
		1969	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1970	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1971	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1972
		1973	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1974	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1975	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1976
		1977	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1978
		1979	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1980	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1981	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1982	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1983
		1984	main_mainstack = PL_mainstack;
		1985	main_top_env = PL_top_env;
		1986
		1987	while (main_top_env->je_prev)
		1988	main_top_env = main_top_env->je_prev;
		1989
		1990	coroapi.ver = CORO_API_VERSION;
		1991	coroapi.rev = CORO_API_REVISION;
		1992	coroapi.transfer = api_transfer;
		1993
1684	{	1994	{
1685	case 0:	1995	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1686	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1687	ta.next = 0;
1688	break;
1689		1996
1690	case 1:	1997	if (!svp) croak ("Time::HiRes is required");
1691	if (items != 2)	1998	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1692	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1693		1999
1694	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	2000	nvtime = INT2PTR (double (*)(), SvIV (*svp));
1695	break;
1696
1697	case 2:
1698	prepare_schedule (aTHX_ &ta);
1699	break;
1700
1701	case 3:
1702	prepare_cede (aTHX_ &ta);
1703	break;
1704
1705	case 4:
1706	if (!prepare_cede_notself (aTHX_ &ta))
1707	XSRETURN_EMPTY;
1708
1709	break;
1710	}	2001	}
1711	SPAGAIN;
1712		2002
1713	BARRIER;	2003	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1714	PUTBACK;
1715	TRANSFER (ta, 0);
1716	SPAGAIN; /* might be the sp of a different coroutine now */
1717	/* be extra careful not to ever do anything after TRANSFER */
1718	}	2004	}
		2005
		2006	SV *
		2007	new (char *klass, ...)
		2008	CODE:
		2009	{
		2010	struct coro *coro;
		2011	MAGIC *mg;
		2012	HV *hv;
		2013	int i;
		2014
		2015	Newz (0, coro, 1, struct coro);
		2016	coro->args = newAV ();
		2017	coro->flags = CF_NEW;
		2018
		2019	if (coro_first) coro_first->prev = coro;
		2020	coro->next = coro_first;
		2021	coro_first = coro;
		2022
		2023	coro->hv = hv = newHV ();
		2024	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		2025	mg->mg_flags |= MGf_DUP;
		2026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		2027
		2028	av_extend (coro->args, items - 1);
		2029	for (i = 1; i < items; i++)
		2030	av_push (coro->args, newSVsv (ST (i)));
		2031	}
		2032	OUTPUT:
		2033	RETVAL
1719		2034
1720	bool	2035	bool
1721	_destroy (SV *coro_sv)	2036	_destroy (SV *coro_sv)
1722	CODE:	2037	CODE:
1723	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2038	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1731	_exit (code);	2046	_exit (code);
1732		2047
1733	int	2048	int
1734	cctx_stacksize (int new_stacksize = 0)	2049	cctx_stacksize (int new_stacksize = 0)
1735	CODE:	2050	CODE:
1736	RETVAL = coro_stacksize;	2051	RETVAL = cctx_stacksize;
1737	if (new_stacksize)	2052	if (new_stacksize)
		2053	{
1738	coro_stacksize = new_stacksize;	2054	cctx_stacksize = new_stacksize;
		2055	++cctx_gen;
		2056	}
		2057	OUTPUT:
		2058	RETVAL
		2059
		2060	int
		2061	cctx_max_idle (int max_idle = 0)
		2062	CODE:
		2063	RETVAL = cctx_max_idle;
		2064	if (max_idle > 1)
		2065	cctx_max_idle = max_idle;
1739	OUTPUT:	2066	OUTPUT:
1740	RETVAL	2067	RETVAL
1741		2068
1742	int	2069	int
1743	cctx_count ()	2070	cctx_count ()
…		…
1767	call (Coro::State coro, SV *coderef)	2094	call (Coro::State coro, SV *coderef)
1768	ALIAS:	2095	ALIAS:
1769	eval = 1	2096	eval = 1
1770	CODE:	2097	CODE:
1771	{	2098	{
1772	if (coro->mainstack)	2099	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1773	{	2100	{
1774	struct coro temp;	2101	struct coro temp;
1775		2102
1776	if (!(coro->flags & CF_RUNNING))	2103	if (!(coro->flags & CF_RUNNING))
1777	{	2104	{
…		…
1821	RETVAL = boolSV (coro->flags & ix);	2148	RETVAL = boolSV (coro->flags & ix);
1822	OUTPUT:	2149	OUTPUT:
1823	RETVAL	2150	RETVAL
1824		2151
1825	void	2152	void
		2153	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2154	PROTOTYPE: $;$
		2155	CODE:
		2156	SvREFCNT_dec (self->throw);
		2157	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2158
		2159	void
1826	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2160	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1827		2161
1828	SV *	2162	SV *
1829	has_cctx (Coro::State coro)	2163	has_cctx (Coro::State coro)
1830	PROTOTYPE: $	2164	PROTOTYPE: $
…		…
1839	CODE:	2173	CODE:
1840	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2174	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1841	OUTPUT:	2175	OUTPUT:
1842	RETVAL	2176	RETVAL
1843		2177
1844	IV	2178	UV
1845	rss (Coro::State coro)	2179	rss (Coro::State coro)
1846	PROTOTYPE: $	2180	PROTOTYPE: $
1847	ALIAS:	2181	ALIAS:
1848	usecount = 1	2182	usecount = 1
1849	CODE:	2183	CODE:
…		…
1859	force_cctx ()	2193	force_cctx ()
1860	CODE:	2194	CODE:
1861	struct coro *coro = SvSTATE (coro_current);	2195	struct coro *coro = SvSTATE (coro_current);
1862	coro->cctx->idle_sp = 0;	2196	coro->cctx->idle_sp = 0;
1863		2197
1864	MODULE = Coro::State PACKAGE = Coro
1865
1866	BOOT:
1867	{
1868	int i;
1869
1870	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1871	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1872	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1873
1874	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1875	SvREADONLY_on (coro_current);
1876
1877	coro_stash = gv_stashpv ("Coro", TRUE);
1878
1879	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1880	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1881	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1882	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1883	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1884	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1885
1886	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1887	coro_ready[i] = newAV ();
1888
1889	{
1890	SV *sv = perl_get_sv ("Coro::API", TRUE);
1891	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1892
1893	coroapi.schedule = api_schedule;
1894	coroapi.cede = api_cede;
1895	coroapi.cede_notself = api_cede_notself;
1896	coroapi.ready = api_ready;
1897	coroapi.is_ready = api_is_ready;
1898	coroapi.nready = &coro_nready;
1899	coroapi.current = coro_current;
1900
1901	GCoroAPI = &coroapi;
1902	sv_setiv (sv, (IV)&coroapi);
1903	SvREADONLY_on (sv);
1904	}
1905	}
1906
1907	void
1908	_set_current (SV *current)
1909	PROTOTYPE: $
1910	CODE:
1911	SvREFCNT_dec (SvRV (coro_current));
1912	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1913
1914	void
1915	_set_readyhook (SV *hook)
1916	PROTOTYPE: $
1917	CODE:
1918	LOCK;
1919	SvREFCNT_dec (coro_readyhook);
1920	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1921	UNLOCK;
1922
1923	int
1924	prio (Coro::State coro, int newprio = 0)
1925	ALIAS:
1926	nice = 1
1927	CODE:
1928	{
1929	RETVAL = coro->prio;
1930
1931	if (items > 1)
1932	{
1933	if (ix)
1934	newprio = coro->prio - newprio;
1935
1936	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1937	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1938
1939	coro->prio = newprio;
1940	}
1941	}
1942	OUTPUT:
1943	RETVAL
1944
1945	SV *
1946	ready (SV *self)
1947	PROTOTYPE: $
1948	CODE:
1949	RETVAL = boolSV (api_ready (self));
1950	OUTPUT:
1951	RETVAL
1952
1953	int
1954	nready (...)
1955	PROTOTYPE:
1956	CODE:
1957	RETVAL = coro_nready;
1958	OUTPUT:
1959	RETVAL
1960
1961	void
1962	throw (Coro::State self, SV *throw = &PL_sv_undef)
1963	PROTOTYPE: $;$
1964	CODE:
1965	SvREFCNT_dec (self->throw);
1966	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1967
1968	void	2198	void
1969	swap_defsv (Coro::State self)	2199	swap_defsv (Coro::State self)
1970	PROTOTYPE: $	2200	PROTOTYPE: $
1971	ALIAS:	2201	ALIAS:
1972	swap_defav = 1	2202	swap_defav = 1
…		…
1979	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2209	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1980		2210
1981	SV *tmp = *src; *src = *dst; *dst = tmp;	2211	SV *tmp = *src; *src = *dst; *dst = tmp;
1982	}	2212	}
1983		2213
		2214	MODULE = Coro::State PACKAGE = Coro
		2215
		2216	BOOT:
		2217	{
		2218	int i;
		2219
		2220	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2221	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2222	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2223
		2224	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2225	SvREADONLY_on (coro_current);
		2226
		2227	coro_stash = gv_stashpv ("Coro", TRUE);
		2228
		2229	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		2230	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		2231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		2232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		2233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		2234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		2235
		2236	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		2237	coro_ready[i] = newAV ();
		2238
		2239	{
		2240	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
		2241
		2242	coroapi.schedule = api_schedule;
		2243	coroapi.cede = api_cede;
		2244	coroapi.cede_notself = api_cede_notself;
		2245	coroapi.ready = api_ready;
		2246	coroapi.is_ready = api_is_ready;
		2247	coroapi.nready = &coro_nready;
		2248	coroapi.current = coro_current;
		2249
		2250	GCoroAPI = &coroapi;
		2251	sv_setiv (sv, (IV)&coroapi);
		2252	SvREADONLY_on (sv);
		2253	}
		2254	}
		2255
		2256	void
		2257	_set_current (SV *current)
		2258	PROTOTYPE: $
		2259	CODE:
		2260	SvREFCNT_dec (SvRV (coro_current));
		2261	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2262
		2263	void
		2264	_set_readyhook (SV *hook)
		2265	PROTOTYPE: $
		2266	CODE:
		2267	LOCK;
		2268	SvREFCNT_dec (coro_readyhook);
		2269	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2270	UNLOCK;
		2271
		2272	int
		2273	prio (Coro::State coro, int newprio = 0)
		2274	ALIAS:
		2275	nice = 1
		2276	CODE:
		2277	{
		2278	RETVAL = coro->prio;
		2279
		2280	if (items > 1)
		2281	{
		2282	if (ix)
		2283	newprio = coro->prio - newprio;
		2284
		2285	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		2286	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		2287
		2288	coro->prio = newprio;
		2289	}
		2290	}
		2291	OUTPUT:
		2292	RETVAL
		2293
		2294	SV *
		2295	ready (SV *self)
		2296	PROTOTYPE: $
		2297	CODE:
		2298	RETVAL = boolSV (api_ready (self));
		2299	OUTPUT:
		2300	RETVAL
		2301
		2302	int
		2303	nready (...)
		2304	PROTOTYPE:
		2305	CODE:
		2306	RETVAL = coro_nready;
		2307	OUTPUT:
		2308	RETVAL
		2309
1984	# for async_pool speedup	2310	# for async_pool speedup
1985	void	2311	void
1986	_pool_1 (SV *cb)	2312	_pool_1 (SV *cb)
1987	CODE:	2313	CODE:
1988	{	2314	{
…		…
1993	AV *invoke_av;	2319	AV *invoke_av;
1994	int i, len;	2320	int i, len;
1995		2321
1996	if (!invoke)	2322	if (!invoke)
1997	{	2323	{
1998	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2324	SV *old = PL_diehook;
		2325	PL_diehook = 0;
		2326	SvREFCNT_dec (old);
1999	croak ("\3async_pool terminate\2\n");	2327	croak ("\3async_pool terminate\2\n");
2000	}	2328	}
2001		2329
2002	SvREFCNT_dec (coro->saved_deffh);	2330	SvREFCNT_dec (coro->saved_deffh);
2003	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2331	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2004		2332
2005	hv_store (hv, "desc", sizeof ("desc") - 1,	2333	hv_store (hv, "desc", sizeof ("desc") - 1,
2006	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2334	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2007		2335
2008	invoke_av = (AV *)SvRV (invoke);	2336	invoke_av = (AV *)SvRV (invoke);
…		…
2012		2340
2013	if (len > 0)	2341	if (len > 0)
2014	{	2342	{
2015	av_fill (defav, len - 1);	2343	av_fill (defav, len - 1);
2016	for (i = 0; i < len; ++i)	2344	for (i = 0; i < len; ++i)
2017	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2345	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2018	}	2346	}
2019		2347
2020	SvREFCNT_dec (invoke);	2348	SvREFCNT_dec (invoke);
2021	}	2349	}
2022		2350
…		…
2029	sv_setsv (cb, &PL_sv_undef);	2357	sv_setsv (cb, &PL_sv_undef);
2030		2358
2031	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2359	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2032	coro->saved_deffh = 0;	2360	coro->saved_deffh = 0;
2033		2361
2034	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2362	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2035	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2363	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2036	{	2364	{
2037	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2365	SV *old = PL_diehook;
		2366	PL_diehook = 0;
		2367	SvREFCNT_dec (old);
2038	croak ("\3async_pool terminate\2\n");	2368	croak ("\3async_pool terminate\2\n");
2039	}	2369	}
2040		2370
2041	av_clear (GvAV (PL_defgv));	2371	av_clear (GvAV (PL_defgv));
2042	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2372	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
2048	api_trace (coro_current, 0);	2378	api_trace (coro_current, 0);
2049		2379
2050	av_push (av_async_pool, newSVsv (coro_current));	2380	av_push (av_async_pool, newSVsv (coro_current));
2051	}	2381	}
2052		2382
		2383	#if 0
		2384
		2385	void
		2386	_generator_call (...)
		2387	PROTOTYPE: @
		2388	PPCODE:
		2389	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2390	xxxx
		2391	abort ();
		2392
		2393	SV *
		2394	gensub (SV *sub, ...)
		2395	PROTOTYPE: &;@
		2396	CODE:
		2397	{
		2398	struct coro *coro;
		2399	MAGIC *mg;
		2400	CV *xcv;
		2401	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2402	int i;
		2403
		2404	CvGV (ncv) = CvGV (cv);
		2405	CvFILE (ncv) = CvFILE (cv);
		2406
		2407	Newz (0, coro, 1, struct coro);
		2408	coro->args = newAV ();
		2409	coro->flags = CF_NEW;
		2410
		2411	av_extend (coro->args, items - 1);
		2412	for (i = 1; i < items; i++)
		2413	av_push (coro->args, newSVsv (ST (i)));
		2414
		2415	CvISXSUB_on (ncv);
		2416	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2417
		2418	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2419
		2420	CvXSUB (ncv) = CvXSUB (xcv);
		2421	CvANON_on (ncv);
		2422
		2423	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2424	RETVAL = newRV_noinc ((SV *)ncv);
		2425	}
		2426	OUTPUT:
		2427	RETVAL
		2428
		2429	#endif
		2430
2053		2431
2054	MODULE = Coro::State PACKAGE = Coro::AIO	2432	MODULE = Coro::State PACKAGE = Coro::AIO
2055		2433
2056	SV *	2434	void
2057	_get_state ()	2435	_get_state (SV *self)
2058	CODE:	2436	PPCODE:
2059	{	2437	{
2060	struct io_state *data;	2438	AV *defav = GvAV (PL_defgv);
2061		2439	AV *av = newAV ();
		2440	int i;
2062	RETVAL = newSV (sizeof (struct io_state));	2441	SV *data_sv = newSV (sizeof (struct io_state));
2063	data = (struct io_state *)SvPVX (RETVAL);	2442	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2064	SvCUR_set (RETVAL, sizeof (struct io_state));	2443	SvCUR_set (data_sv, sizeof (struct io_state));
2065	SvPOK_only (RETVAL);	2444	SvPOK_only (data_sv);
2066		2445
2067	data->errorno = errno;	2446	data->errorno = errno;
2068	data->laststype = PL_laststype;	2447	data->laststype = PL_laststype;
2069	data->laststatval = PL_laststatval;	2448	data->laststatval = PL_laststatval;
2070	data->statcache = PL_statcache;	2449	data->statcache = PL_statcache;
		2450
		2451	av_extend (av, AvFILLp (defav) + 1 + 1);
		2452
		2453	for (i = 0; i <= AvFILLp (defav); ++i)
		2454	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2455
		2456	av_push (av, data_sv);
		2457
		2458	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2459
		2460	api_ready (self);
2071	}	2461	}
2072	OUTPUT:
2073	RETVAL
2074		2462
2075	void	2463	void
2076	_set_state (char *data_)	2464	_set_state (SV *state)
2077	PROTOTYPE: $	2465	PROTOTYPE: $
2078	CODE:	2466	PPCODE:
2079	{	2467	{
2080	struct io_state *data = (void *)data_;	2468	AV *av = (AV *)SvRV (state);
		2469	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2470	int i;
2081		2471
2082	errno = data->errorno;	2472	errno = data->errorno;
2083	PL_laststype = data->laststype;	2473	PL_laststype = data->laststype;
2084	PL_laststatval = data->laststatval;	2474	PL_laststatval = data->laststatval;
2085	PL_statcache = data->statcache;	2475	PL_statcache = data->statcache;
		2476
		2477	EXTEND (SP, AvFILLp (av));
		2478	for (i = 0; i < AvFILLp (av); ++i)
		2479	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2086	}	2480	}
2087		2481
2088		2482
2089	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2483	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2090		2484
…		…
2114	}	2508	}
2115		2509
2116	--incede;	2510	--incede;
2117	}	2511	}
2118		2512
		2513
		2514	MODULE = Coro::State PACKAGE = PerlIO::cede
		2515
		2516	BOOT:
		2517	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2518

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