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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.232 by root, Thu Apr 24 12:40:38 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;
…		…
170		195
171	/* async_pool helper stuff */	196	/* async_pool helper stuff */
172	static SV *sv_pool_rss;	197	static SV *sv_pool_rss;
173	static SV *sv_pool_size;	198	static SV *sv_pool_size;
174	static AV *av_async_pool;	199	static AV *av_async_pool;
		200
		201	/* Coro::AnyEvent */
		202	static SV *sv_activity;
175		203
176	static struct coro_cctx *cctx_first;	204	static struct coro_cctx *cctx_first;
177	static int cctx_count, cctx_idle;	205	static int cctx_count, cctx_idle;
178		206
179	enum {	207	enum {
…		…
197	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
198	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 */
199	JMPENV *top_env;	227	JMPENV *top_env;
200	coro_context cctx;	228	coro_context cctx;
201		229
		230	U32 gen;
202	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
203	int valgrind_id;	232	int valgrind_id;
204	#endif	233	#endif
205	unsigned char flags;	234	unsigned char flags;
206	} coro_cctx;	235	} coro_cctx;
…		…
265	#define PRIO_IDLE -3	294	#define PRIO_IDLE -3
266	#define PRIO_MIN -4	295	#define PRIO_MIN -4
267		296
268	/* for Coro.pm */	297	/* for Coro.pm */
269	static SV *coro_current;	298	static SV *coro_current;
		299	static SV *coro_readyhook;
270	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
271	static int coro_nready;	301	static int coro_nready;
272	static struct coro *coro_first;	302	static struct coro *coro_first;
273		303
274	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
275		305
…		…
317	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
318	#endif	348	#endif
319	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
320	--AvFILLp (padlist);	350	--AvFILLp (padlist);
321		351
322	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
323	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
324		354
325	return newpadlist;	355	return newpadlist;
326	}	356	}
327		357
…		…
357		387
358	/* casting is fun. */	388	/* casting is fun. */
359	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
360	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
361		391
		392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		393
362	return 0;	394	return 0;
363	}	395	}
364		396
365	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
366	#define CORO_MAGIC_type_state PERL_MAGIC_ext	398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
368	static MGVTBL coro_cv_vtbl = {	400	static MGVTBL coro_cv_vtbl = {
369	0, 0, 0, 0,	401	0, 0, 0, 0,
370	coro_cv_free	402	coro_cv_free
371	};	403	};
372		404
373	#define CORO_MAGIC(sv,type) \	405	#define CORO_MAGIC(sv, type) \
374	SvMAGIC (sv) \	406	SvMAGIC (sv) \
375	? SvMAGIC (sv)->mg_type == type \	407	? SvMAGIC (sv)->mg_type == type \
376	? SvMAGIC (sv) \	408	? SvMAGIC (sv) \
377	: mg_find (sv, type) \	409	: mg_find (sv, type) \
378	: 0	410	: 0
379		411
380	#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)
381	#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)
382		414
383	static struct coro *	415	INLINE struct coro *
384	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
385	{	417	{
386	HV *stash;	418	HV *stash;
387	MAGIC *mg;	419	MAGIC *mg;
388		420
…		…
416	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
417	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
418	else	450	else
419	{	451	{
420	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
421	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
422	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
423	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
424	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
425	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
426	#else	459	#else
…		…
510		543
511	if (expect_true (CvDEPTH (cv)))	544	if (expect_true (CvDEPTH (cv)))
512	{	545	{
513	EXTEND (SP, 3);	546	EXTEND (SP, 3);
514	PUSHs ((SV *)CvPADLIST (cv));	547	PUSHs ((SV *)CvPADLIST (cv));
515	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	548	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
516	PUSHs ((SV *)cv);	549	PUSHs ((SV *)cv);
517		550
518	CvDEPTH (cv) = 0;	551	CvDEPTH (cv) = 0;
519	get_padlist (aTHX_ cv);	552	get_padlist (aTHX_ cv);
520	}	553	}
…		…
612		645
613	/*	646	/*
614	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
615	*/	648	*/
616	static void	649	static void
617	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
618	{	651	{
619	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
620	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
621		654
622	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
659	#undef VAR	692	#undef VAR
660	}	693	}
661	else	694	else
662	slot = coro->slot;	695	slot = coro->slot;
663		696
		697	if (slot)
		698	{
664	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
665	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
666	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 *);
667	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
668	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
669	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
670	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
671		706
672	#if !PERL_VERSION_ATLEAST (5,10,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
673	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
674	#endif	709	#endif
		710	}
675	}	711	}
676		712
677	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;
678	}	733	}
679		734
680	/** coroutine stack handling ************************************************/	735	/** coroutine stack handling ************************************************/
681		736
682	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	737	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
683	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);
		740
		741	/* apparently < 5.8.8 */
		742	#ifndef MgPV_nolen_const
		743	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		744	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		745	(const char*)(mg)->mg_ptr)
		746	#endif
684		747
685	/*	748	/*
686	* This overrides the default magic get method of %SIG elements.	749	* This overrides the default magic get method of %SIG elements.
687	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	750	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
688	* and instead of tryign to save and restore the hash elements, we just provide	751	* and instead of tryign to save and restore the hash elements, we just provide
…		…
696	{	759	{
697	const char *s = MgPV_nolen_const (mg);	760	const char *s = MgPV_nolen_const (mg);
698		761
699	if (*s == '_')	762	if (*s == '_')
700	{	763	{
701	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	764	SV **svp = 0;
702	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	}
703	}	774	}
704		775
705	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;
706	}	801	}
707		802
708	static int	803	static int
709	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	804	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
710	{	805	{
…		…
757	GvSV (PL_defgv) = newSV (0);	852	GvSV (PL_defgv) = newSV (0);
758	GvAV (PL_defgv) = coro->args; coro->args = 0;	853	GvAV (PL_defgv) = coro->args; coro->args = 0;
759	GvSV (PL_errgv) = newSV (0);	854	GvSV (PL_errgv) = newSV (0);
760	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);
761	PL_rs = newSVsv (GvSV (irsgv));	856	PL_rs = newSVsv (GvSV (irsgv));
762	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	857	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
763		858
764	{	859	{
765	dSP;	860	dSP;
766	LOGOP myop;	861	UNOP myop;
767		862
768	Zero (&myop, 1, LOGOP);	863	Zero (&myop, 1, UNOP);
769	myop.op_next = Nullop;	864	myop.op_next = Nullop;
770	myop.op_flags = OPf_WANT_VOID;	865	myop.op_flags = OPf_WANT_VOID;
771		866
772	PUSHMARK (SP);	867	PUSHMARK (SP);
773	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
776	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
777	SPAGAIN;	872	SPAGAIN;
778	}	873	}
779		874
780	/* 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
781	* likely was suspended in set_stacklevel, called from entersub.	876	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
782	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	877	* so we have to emulate entering pp_set_stacklevel here.
783	* so we ENTER here for symmetry
784	*/	878	*/
785	ENTER;	879	SSL_HEAD;
786	}	880	}
787		881
788	static void	882	static void
789	coro_destroy (pTHX_ struct coro *coro)	883	coro_destruct (pTHX_ struct coro *coro)
790	{	884	{
791	if (!IN_DESTRUCT)	885	if (!IN_DESTRUCT)
792	{	886	{
793	/* restore all saved variables and stuff */	887	/* restore all saved variables and stuff */
794	LEAVE_SCOPE (0);	888	LEAVE_SCOPE (0);
…		…
816	SvREFCNT_dec (PL_warnhook);	910	SvREFCNT_dec (PL_warnhook);
817		911
818	SvREFCNT_dec (coro->saved_deffh);	912	SvREFCNT_dec (coro->saved_deffh);
819	SvREFCNT_dec (coro->throw);	913	SvREFCNT_dec (coro->throw);
820		914
821	coro_destroy_stacks (aTHX);	915	coro_destruct_stacks (aTHX);
822	}	916	}
823		917
824	static void	918	INLINE void
825	free_coro_mortal (pTHX)	919	free_coro_mortal (pTHX)
826	{	920	{
827	if (expect_true (coro_mortal))	921	if (expect_true (coro_mortal))
828	{	922	{
829	SvREFCNT_dec (coro_mortal);	923	SvREFCNT_dec (coro_mortal);
…		…
863	: cx->blk_gimme == G_SCALAR ? bot + 1	957	: cx->blk_gimme == G_SCALAR ? bot + 1
864	: bot;	958	: bot;
865		959
866	av_extend (av, top - bot);	960	av_extend (av, top - bot);
867	while (bot < top)	961	while (bot < top)
868	av_push (av, SvREFCNT_inc (*bot++));	962	av_push (av, SvREFCNT_inc_NN (*bot++));
869		963
870	PL_runops = RUNOPS_DEFAULT;	964	PL_runops = RUNOPS_DEFAULT;
871	ENTER;	965	ENTER;
872	SAVETMPS;	966	SAVETMPS;
873	EXTEND (SP, 3);	967	EXTEND (SP, 3);
…		…
953		1047
954	TAINT_NOT;	1048	TAINT_NOT;
955	return 0;	1049	return 0;
956	}	1050	}
957		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
958	/* 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 */
959	/* _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 */
960	/* during execution of a perl program */	1061	/* during execution of a perl program */
		1062	/* also initialises PL_top_env */
961	static void NOINLINE	1063	static void NOINLINE
962	cctx_prepare (pTHX_ coro_cctx *cctx)	1064	cctx_prepare (pTHX_ coro_cctx *cctx)
963	{	1065	{
964	dSP;	1066	dSP;
965	LOGOP myop;	1067	UNOP myop;
966		1068
967	PL_top_env = &PL_start_env;	1069	PL_top_env = &PL_start_env;
968		1070
969	if (cctx->flags & CC_TRACE)	1071	if (cctx->flags & CC_TRACE)
970	PL_runops = runops_trace;	1072	PL_runops = runops_trace;
971		1073
972	Zero (&myop, 1, LOGOP);	1074	Zero (&myop, 1, UNOP);
973	myop.op_next = PL_op;	1075	myop.op_next = PL_op;
974	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1076	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
975		1077
976	PUSHMARK (SP);	1078	PUSHMARK (SP);
977	EXTEND (SP, 2);	1079	EXTEND (SP, 2);
978	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1080	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
979	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1081	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
980	PUTBACK;	1082	PUTBACK;
981	PL_op = (OP *)&myop;	1083	PL_op = (OP *)&myop;
982	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1084	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
983	SPAGAIN;	1085	SPAGAIN;
984	}	1086	}
985		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
986	/*	1109	/*
987	* this is a _very_ stripped down perl interpreter ;)	1110	* this is a _very_ stripped down perl interpreter ;)
988	*/	1111	*/
989	static void	1112	static void
990	cctx_run (void *arg)	1113	cctx_run (void *arg)
991	{	1114	{
		1115	#ifdef USE_ITHREADS
		1116	# if CORO_PTHREAD
		1117	PERL_SET_CONTEXT (coro_thx);
		1118	# endif
		1119	#endif
		1120	{
992	dTHX;	1121	dTHX;
993		1122
994	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1123	/* we are the alternative tail to pp_set_stacklevel */
995	UNLOCK;	1124	/* so do the same things here */
		1125	SSL_TAIL;
996		1126
997	/* we now skip the entersub that lead to transfer() */	1127	/* we now skip the op that did lead to transfer() */
998	PL_op = PL_op->op_next;	1128	PL_op = PL_op->op_next;
999		1129
1000	/* inject a fake subroutine call to cctx_init */	1130	/* inject a fake subroutine call to cctx_init */
1001	cctx_prepare (aTHX_ (coro_cctx *)arg);	1131	cctx_prepare (aTHX_ (coro_cctx *)arg);
1002		1132
		1133	/* cctx_run is the alternative tail of transfer() */
		1134	transfer_tail (aTHX);
		1135
1003	/* 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 */
1004	PL_restartop = PL_op;	1137	PL_restartop = PL_op;
1005	perl_run (PL_curinterp);	1138	perl_run (PL_curinterp);
1006		1139
1007	/*	1140	/*
1008	* 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
1009	* 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)
1010	* 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
1011	* bootstrap-time "top" top_env, as we cannot restore the "main"	1144	* bootstrap-time "top" top_env, as we cannot restore the "main"
1012	* coroutine as Coro has no such concept	1145	* coroutine as Coro has no such concept
1013	*/	1146	*/
1014	PL_top_env = main_top_env;	1147	PL_top_env = main_top_env;
1015	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	}
1016	}	1150	}
1017		1151
1018	static coro_cctx *	1152	static coro_cctx *
1019	cctx_new ()	1153	cctx_new ()
1020	{	1154	{
1021	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 ();
1022	void *stack_start;	1184	void *stack_start;
1023	size_t stack_size;	1185	size_t stack_size;
1024		1186
1025	++cctx_count;
1026
1027	Newz (0, cctx, 1, coro_cctx);
1028
1029	#if HAVE_MMAP	1187	#if HAVE_MMAP
1030	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;
1031	/* mmap supposedly does allocate-on-write for us */	1189	/* mmap supposedly does allocate-on-write for us */
1032	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);
1033		1191
1034	if (cctx->sptr != (void *)-1)	1192	if (cctx->sptr != (void *)-1)
1035	{	1193	{
1036	# if CORO_STACKGUARD	1194	#if CORO_STACKGUARD
1037	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1195	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1038	# endif	1196	#endif
1039	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1197	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1040	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1198	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1041	cctx->flags |= CC_MAPPED;	1199	cctx->flags |= CC_MAPPED;
1042	}	1200	}
1043	else	1201	else
1044	#endif	1202	#endif
1045	{	1203	{
1046	cctx->ssize = coro_stacksize * (long)sizeof (long);	1204	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1047	New (0, cctx->sptr, coro_stacksize, long);	1205	New (0, cctx->sptr, cctx_stacksize, long);
1048		1206
1049	if (!cctx->sptr)	1207	if (!cctx->sptr)
1050	{	1208	{
1051	perror ("FATAL: unable to allocate stack for coroutine");	1209	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1052	_exit (EXIT_FAILURE);	1210	_exit (EXIT_FAILURE);
1053	}	1211	}
1054		1212
1055	stack_start = cctx->sptr;	1213	stack_start = cctx->sptr;
1056	stack_size = cctx->ssize;	1214	stack_size = cctx->ssize;
1057	}	1215	}
1058		1216
1059	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
1060	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);
1061		1222
1062	return cctx;	1223	return cctx;
1063	}	1224	}
1064		1225
…		…
1067	{	1228	{
1068	if (!cctx)	1229	if (!cctx)
1069	return;	1230	return;
1070		1231
1071	--cctx_count;	1232	--cctx_count;
		1233	coro_destroy (&cctx->cctx);
1072		1234
		1235	/* coro_transfer creates new, empty cctx's */
		1236	if (cctx->sptr)
		1237	{
1073	#if CORO_USE_VALGRIND	1238	#if CORO_USE_VALGRIND
1074	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1239	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1075	#endif	1240	#endif
1076		1241
1077	#if HAVE_MMAP	1242	#if HAVE_MMAP
1078	if (cctx->flags & CC_MAPPED)	1243	if (cctx->flags & CC_MAPPED)
1079	munmap (cctx->sptr, cctx->ssize);	1244	munmap (cctx->sptr, cctx->ssize);
1080	else	1245	else
1081	#endif	1246	#endif
1082	Safefree (cctx->sptr);	1247	Safefree (cctx->sptr);
		1248	}
1083		1249
1084	Safefree (cctx);	1250	Safefree (cctx);
1085	}	1251	}
1086		1252
1087	/* wether this cctx should be destructed */	1253	/* wether this cctx should be destructed */
1088	#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))
1089		1255
1090	static coro_cctx *	1256	static coro_cctx *
1091	cctx_get (pTHX)	1257	cctx_get (pTHX)
1092	{	1258	{
1093	while (expect_true (cctx_first))	1259	while (expect_true (cctx_first))
…		…
1100	return cctx;	1266	return cctx;
1101		1267
1102	cctx_destroy (cctx);	1268	cctx_destroy (cctx);
1103	}	1269	}
1104		1270
1105	return cctx_new ();	1271	return cctx_new_run ();
1106	}	1272	}
1107		1273
1108	static void	1274	static void
1109	cctx_put (coro_cctx *cctx)	1275	cctx_put (coro_cctx *cctx)
1110	{	1276	{
		1277	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1278
1111	/* free another cctx if overlimit */	1279	/* free another cctx if overlimit */
1112	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1280	if (expect_false (cctx_idle >= cctx_max_idle))
1113	{	1281	{
1114	coro_cctx *first = cctx_first;	1282	coro_cctx *first = cctx_first;
1115	cctx_first = first->next;	1283	cctx_first = first->next;
1116	--cctx_idle;	1284	--cctx_idle;
1117		1285
…		…
1149	/* always use the TRANSFER macro */	1317	/* always use the TRANSFER macro */
1150	static void NOINLINE	1318	static void NOINLINE
1151	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1319	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1152	{	1320	{
1153	dSTACKLEVEL;	1321	dSTACKLEVEL;
1154	static volatile int has_throw;
1155		1322
1156	/* sometimes transfer is only called to set idle_sp */	1323	/* sometimes transfer is only called to set idle_sp */
1157	if (expect_false (!next))	1324	if (expect_false (!next))
1158	{	1325	{
1159	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1326	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1163	{	1330	{
1164	coro_cctx *prev__cctx;	1331	coro_cctx *prev__cctx;
1165		1332
1166	if (expect_false (prev->flags & CF_NEW))	1333	if (expect_false (prev->flags & CF_NEW))
1167	{	1334	{
1168	/* create a new empty context */	1335	/* create a new empty/source context */
1169	Newz (0, prev->cctx, 1, coro_cctx);	1336	prev->cctx = cctx_new_empty ();
1170	prev->flags &= ~CF_NEW;	1337	prev->flags &= ~CF_NEW;
1171	prev->flags |= CF_RUNNING;	1338	prev->flags |= CF_RUNNING;
1172	}	1339	}
1173		1340
1174	prev->flags &= ~CF_RUNNING;	1341	prev->flags &= ~CF_RUNNING;
…		…
1189	else	1356	else
1190	load_perl (aTHX_ next);	1357	load_perl (aTHX_ next);
1191		1358
1192	prev__cctx = prev->cctx;	1359	prev__cctx = prev->cctx;
1193		1360
1194	/* possibly "free" the cctx */	1361	/* possibly untie and reuse the cctx */
1195	if (expect_true (	1362	if (expect_true (
1196	prev__cctx->idle_sp == STACKLEVEL	1363	prev__cctx->idle_sp == STACKLEVEL
1197	&& !(prev__cctx->flags & CC_TRACE)	1364	&& !(prev__cctx->flags & CC_TRACE)
1198	&& !force_cctx	1365	&& !force_cctx
1199	))	1366	))
1200	{	1367	{
1201	/* 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 */
1202	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));
1203		1370
1204	prev->cctx = 0;	1371	prev->cctx = 0;
1205		1372
1206	/* 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 */
1207	/* 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 */
…		…
1215	++next->usecount;	1382	++next->usecount;
1216		1383
1217	if (expect_true (!next->cctx))	1384	if (expect_true (!next->cctx))
1218	next->cctx = cctx_get (aTHX);	1385	next->cctx = cctx_get (aTHX);
1219		1386
1220	has_throw = !!next->throw;	1387	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1388	transfer_next = next;
1221		1389
1222	if (expect_false (prev__cctx != next->cctx))	1390	if (expect_false (prev__cctx != next->cctx))
1223	{	1391	{
1224	prev__cctx->top_env = PL_top_env;	1392	prev__cctx->top_env = PL_top_env;
1225	PL_top_env = next->cctx->top_env;	1393	PL_top_env = next->cctx->top_env;
1226	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1394	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1227	}	1395	}
1228		1396
1229	free_coro_mortal (aTHX);	1397	transfer_tail (aTHX);
1230	UNLOCK;
1231
1232	if (expect_false (has_throw))
1233	{
1234	struct coro *coro = SvSTATE (coro_current);
1235
1236	if (coro->throw)
1237	{
1238	SV *exception = coro->throw;
1239	coro->throw = 0;
1240	sv_setsv (ERRSV, exception);
1241	croak (0);
1242	}
1243	}
1244	}	1398	}
1245	}	1399	}
1246
1247	struct transfer_args
1248	{
1249	struct coro *prev, *next;
1250	};
1251		1400
1252	#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))
1253	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1402	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1254		1403
1255	/** high level stuff ********************************************************/	1404	/** high level stuff ********************************************************/
…		…
1281	croak ("FATAL: tried to destroy currently running coroutine");	1430	croak ("FATAL: tried to destroy currently running coroutine");
1282		1431
1283	save_perl (aTHX_ &temp);	1432	save_perl (aTHX_ &temp);
1284	load_perl (aTHX_ coro);	1433	load_perl (aTHX_ coro);
1285		1434
1286	coro_destroy (aTHX_ coro);	1435	coro_destruct (aTHX_ coro);
1287		1436
1288	load_perl (aTHX_ &temp);	1437	load_perl (aTHX_ &temp);
1289		1438
1290	coro->slot = 0;	1439	coro->slot = 0;
1291	}	1440	}
…		…
1379	static int	1528	static int
1380	api_ready (SV *coro_sv)	1529	api_ready (SV *coro_sv)
1381	{	1530	{
1382	dTHX;	1531	dTHX;
1383	struct coro *coro;	1532	struct coro *coro;
		1533	SV *sv_hook;
		1534	void (*xs_hook)(void);
1384		1535
1385	if (SvROK (coro_sv))	1536	if (SvROK (coro_sv))
1386	coro_sv = SvRV (coro_sv);	1537	coro_sv = SvRV (coro_sv);
1387		1538
1388	coro = SvSTATE (coro_sv);	1539	coro = SvSTATE (coro_sv);
…		…
1391	return 0;	1542	return 0;
1392		1543
1393	coro->flags |= CF_READY;	1544	coro->flags |= CF_READY;
1394		1545
1395	LOCK;	1546	LOCK;
		1547
		1548	sv_hook = coro_nready ? 0 : coro_readyhook;
		1549	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1550
1396	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1551	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1397	++coro_nready;	1552	++coro_nready;
		1553
1398	UNLOCK;	1554	UNLOCK;
		1555
		1556	if (sv_hook)
		1557	{
		1558	dSP;
		1559
		1560	ENTER;
		1561	SAVETMPS;
		1562
		1563	PUSHMARK (SP);
		1564	PUTBACK;
		1565	call_sv (sv_hook, G_DISCARD);
		1566	SPAGAIN;
		1567
		1568	FREETMPS;
		1569	LEAVE;
		1570	}
		1571
		1572	if (xs_hook)
		1573	xs_hook ();
1399		1574
1400	return 1;	1575	return 1;
1401	}	1576	}
1402		1577
1403	static int	1578	static int
1404	api_is_ready (SV *coro_sv)	1579	api_is_ready (SV *coro_sv)
1405	{	1580	{
1406	dTHX;	1581	dTHX;
		1582
1407	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1583	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1408	}	1584	}
1409		1585
1410	static void	1586	INLINE void
1411	prepare_schedule (pTHX_ struct transfer_args *ta)	1587	prepare_schedule (pTHX_ struct transfer_args *ta)
1412	{	1588	{
1413	SV *prev_sv, *next_sv;	1589	SV *prev_sv, *next_sv;
1414		1590
1415	for (;;)	1591	for (;;)
…		…
1441	/* cannot transfer to destroyed coros, skip and look for next */	1617	/* cannot transfer to destroyed coros, skip and look for next */
1442	if (expect_false (ta->next->flags & CF_DESTROYED))	1618	if (expect_false (ta->next->flags & CF_DESTROYED))
1443	{	1619	{
1444	UNLOCK;	1620	UNLOCK;
1445	SvREFCNT_dec (next_sv);	1621	SvREFCNT_dec (next_sv);
1446	/* coro_nready is already taken care of by destroy */	1622	/* coro_nready has already been taken care of by destroy */
1447	continue;	1623	continue;
1448	}	1624	}
1449		1625
1450	--coro_nready;	1626	--coro_nready;
1451	UNLOCK;	1627	UNLOCK;
…		…
1454		1630
1455	/* free this only after the transfer */	1631	/* free this only after the transfer */
1456	prev_sv = SvRV (coro_current);	1632	prev_sv = SvRV (coro_current);
1457	ta->prev = SvSTATE (prev_sv);	1633	ta->prev = SvSTATE (prev_sv);
1458	TRANSFER_CHECK (*ta);	1634	TRANSFER_CHECK (*ta);
1459	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));
1460	ta->next->flags &= ~CF_READY;	1636	ta->next->flags &= ~CF_READY;
1461	SvRV_set (coro_current, next_sv);	1637	SvRV_set (coro_current, next_sv);
1462		1638
1463	LOCK;	1639	LOCK;
1464	free_coro_mortal (aTHX);	1640	free_coro_mortal (aTHX);
1465	coro_mortal = prev_sv;	1641	coro_mortal = prev_sv;
1466	UNLOCK;	1642	UNLOCK;
1467	}	1643	}
1468		1644
1469	static void	1645	INLINE void
1470	prepare_cede (pTHX_ struct transfer_args *ta)	1646	prepare_cede (pTHX_ struct transfer_args *ta)
1471	{	1647	{
1472	api_ready (coro_current);	1648	api_ready (coro_current);
1473	prepare_schedule (aTHX_ ta);	1649	prepare_schedule (aTHX_ ta);
1474	}	1650	}
…		…
1536	struct coro *coro = SvSTATE (coro_sv);	1712	struct coro *coro = SvSTATE (coro_sv);
1537		1713
1538	if (flags & CC_TRACE)	1714	if (flags & CC_TRACE)
1539	{	1715	{
1540	if (!coro->cctx)	1716	if (!coro->cctx)
1541	coro->cctx = cctx_new ();	1717	coro->cctx = cctx_new_run ();
1542	else if (!(coro->cctx->flags & CC_TRACE))	1718	else if (!(coro->cctx->flags & CC_TRACE))
1543	croak ("cannot enable tracing on coroutine with custom stack");	1719	croak ("cannot enable tracing on coroutine with custom stack");
1544		1720
1545	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1721	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1546	}	1722	}
…		…
1553	else	1729	else
1554	coro->slot->runops = RUNOPS_DEFAULT;	1730	coro->slot->runops = RUNOPS_DEFAULT;
1555	}	1731	}
1556	}	1732	}
1557		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
1558	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1919	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1559		1920
1560	PROTOTYPES: DISABLE	1921	PROTOTYPES: DISABLE
1561
1562	BOOT:
1563	{
1564	#ifdef USE_ITHREADS
1565	MUTEX_INIT (&coro_mutex);
1566	#endif
1567	BOOT_PAGESIZE;
1568
1569	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1570	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1571
1572	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1573	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1574	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1575	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1576
1577	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1578	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1579	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1580
1581	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1582
1583	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1584	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1585	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1586	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1587
1588	main_mainstack = PL_mainstack;
1589	main_top_env = PL_top_env;
1590
1591	while (main_top_env->je_prev)
1592	main_top_env = main_top_env->je_prev;
1593
1594	coroapi.ver = CORO_API_VERSION;
1595	coroapi.rev = CORO_API_REVISION;
1596	coroapi.transfer = api_transfer;
1597
1598	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1599	}
1600
1601	SV *
1602	new (char *klass, ...)
1603	CODE:
1604	{
1605	struct coro *coro;
1606	MAGIC *mg;
1607	HV *hv;
1608	int i;
1609
1610	Newz (0, coro, 1, struct coro);
1611	coro->args = newAV ();
1612	coro->flags = CF_NEW;
1613
1614	if (coro_first) coro_first->prev = coro;
1615	coro->next = coro_first;
1616	coro_first = coro;
1617
1618	coro->hv = hv = newHV ();
1619	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1620	mg->mg_flags |= MGf_DUP;
1621	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1622
1623	av_extend (coro->args, items - 1);
1624	for (i = 1; i < items; i++)
1625	av_push (coro->args, newSVsv (ST (i)));
1626	}
1627	OUTPUT:
1628	RETVAL
1629		1922
1630	# 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
1631	# 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
1632	# stack offset	1925	# stack offset
1633	void	1926	void
…		…
1637	Coro::schedule = 2	1930	Coro::schedule = 2
1638	Coro::cede = 3	1931	Coro::cede = 3
1639	Coro::cede_notself = 4	1932	Coro::cede_notself = 4
1640	CODE:	1933	CODE:
1641	{	1934	{
1642	struct transfer_args ta;	1935	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1643		1936
1644	PUTBACK;	1937	/* we patch the op, and then re-run the whole call */
1645	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
1646	{	1994	{
1647	case 0:	1995	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1648	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1649	ta.next = 0;
1650	break;
1651		1996
1652	case 1:	1997	if (!svp) croak ("Time::HiRes is required");
1653	if (items != 2)	1998	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1654	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1655		1999
1656	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	2000	nvtime = INT2PTR (double (*)(), SvIV (*svp));
1657	break;
1658
1659	case 2:
1660	prepare_schedule (aTHX_ &ta);
1661	break;
1662
1663	case 3:
1664	prepare_cede (aTHX_ &ta);
1665	break;
1666
1667	case 4:
1668	if (!prepare_cede_notself (aTHX_ &ta))
1669	XSRETURN_EMPTY;
1670
1671	break;
1672	}	2001	}
1673	SPAGAIN;
1674		2002
1675	BARRIER;	2003	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1676	PUTBACK;
1677	TRANSFER (ta, 0);
1678	SPAGAIN; /* might be the sp of a different coroutine now */
1679	/* be extra careful not to ever do anything after TRANSFER */
1680	}	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
1681		2034
1682	bool	2035	bool
1683	_destroy (SV *coro_sv)	2036	_destroy (SV *coro_sv)
1684	CODE:	2037	CODE:
1685	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2038	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1686	OUTPUT:	2039	OUTPUT:
1687	RETVAL	2040	RETVAL
1688		2041
1689	void	2042	void
1690	_exit (code)	2043	_exit (int code)
1691	int code
1692	PROTOTYPE: $	2044	PROTOTYPE: $
1693	CODE:	2045	CODE:
1694	_exit (code);	2046	_exit (code);
1695		2047
1696	int	2048	int
1697	cctx_stacksize (int new_stacksize = 0)	2049	cctx_stacksize (int new_stacksize = 0)
1698	CODE:	2050	CODE:
1699	RETVAL = coro_stacksize;	2051	RETVAL = cctx_stacksize;
1700	if (new_stacksize)	2052	if (new_stacksize)
		2053	{
1701	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;
1702	OUTPUT:	2066	OUTPUT:
1703	RETVAL	2067	RETVAL
1704		2068
1705	int	2069	int
1706	cctx_count ()	2070	cctx_count ()
…		…
1730	call (Coro::State coro, SV *coderef)	2094	call (Coro::State coro, SV *coderef)
1731	ALIAS:	2095	ALIAS:
1732	eval = 1	2096	eval = 1
1733	CODE:	2097	CODE:
1734	{	2098	{
1735	if (coro->mainstack)	2099	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1736	{	2100	{
1737	struct coro temp;	2101	struct coro temp;
1738		2102
1739	if (!(coro->flags & CF_RUNNING))	2103	if (!(coro->flags & CF_RUNNING))
1740	{	2104	{
…		…
1784	RETVAL = boolSV (coro->flags & ix);	2148	RETVAL = boolSV (coro->flags & ix);
1785	OUTPUT:	2149	OUTPUT:
1786	RETVAL	2150	RETVAL
1787		2151
1788	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
1789	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2160	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1790		2161
1791	SV *	2162	SV *
1792	has_stack (Coro::State coro)	2163	has_cctx (Coro::State coro)
1793	PROTOTYPE: $	2164	PROTOTYPE: $
1794	CODE:	2165	CODE:
1795	RETVAL = boolSV (!!coro->cctx);	2166	RETVAL = boolSV (!!coro->cctx);
1796	OUTPUT:	2167	OUTPUT:
1797	RETVAL	2168	RETVAL
…		…
1802	CODE:	2173	CODE:
1803	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2174	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1804	OUTPUT:	2175	OUTPUT:
1805	RETVAL	2176	RETVAL
1806		2177
1807	IV	2178	UV
1808	rss (Coro::State coro)	2179	rss (Coro::State coro)
1809	PROTOTYPE: $	2180	PROTOTYPE: $
1810	ALIAS:	2181	ALIAS:
1811	usecount = 1	2182	usecount = 1
1812	CODE:	2183	CODE:
…		…
1822	force_cctx ()	2193	force_cctx ()
1823	CODE:	2194	CODE:
1824	struct coro *coro = SvSTATE (coro_current);	2195	struct coro *coro = SvSTATE (coro_current);
1825	coro->cctx->idle_sp = 0;	2196	coro->cctx->idle_sp = 0;
1826		2197
1827	MODULE = Coro::State PACKAGE = Coro
1828
1829	BOOT:
1830	{
1831	int i;
1832
1833	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1834	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1835	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1836
1837	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1838	SvREADONLY_on (coro_current);
1839
1840	coro_stash = gv_stashpv ("Coro", TRUE);
1841
1842	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1843	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1844	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1845	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1846	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1847	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1848
1849	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1850	coro_ready[i] = newAV ();
1851
1852	{
1853	SV *sv = perl_get_sv ("Coro::API", TRUE);
1854	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1855
1856	coroapi.schedule = api_schedule;
1857	coroapi.cede = api_cede;
1858	coroapi.cede_notself = api_cede_notself;
1859	coroapi.ready = api_ready;
1860	coroapi.is_ready = api_is_ready;
1861	coroapi.nready = &coro_nready;
1862	coroapi.current = coro_current;
1863
1864	GCoroAPI = &coroapi;
1865	sv_setiv (sv, (IV)&coroapi);
1866	SvREADONLY_on (sv);
1867	}
1868	}
1869
1870	void
1871	_set_current (SV *current)
1872	PROTOTYPE: $
1873	CODE:
1874	SvREFCNT_dec (SvRV (coro_current));
1875	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1876
1877	int
1878	prio (Coro::State coro, int newprio = 0)
1879	ALIAS:
1880	nice = 1
1881	CODE:
1882	{
1883	RETVAL = coro->prio;
1884
1885	if (items > 1)
1886	{
1887	if (ix)
1888	newprio = coro->prio - newprio;
1889
1890	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1891	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1892
1893	coro->prio = newprio;
1894	}
1895	}
1896	OUTPUT:
1897	RETVAL
1898
1899	SV *
1900	ready (SV *self)
1901	PROTOTYPE: $
1902	CODE:
1903	RETVAL = boolSV (api_ready (self));
1904	OUTPUT:
1905	RETVAL
1906
1907	int
1908	nready (...)
1909	PROTOTYPE:
1910	CODE:
1911	RETVAL = coro_nready;
1912	OUTPUT:
1913	RETVAL
1914
1915	void
1916	throw (Coro::State self, SV *throw = &PL_sv_undef)
1917	PROTOTYPE: $;$
1918	CODE:
1919	SvREFCNT_dec (self->throw);
1920	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1921
1922	void	2198	void
1923	swap_defsv (Coro::State self)	2199	swap_defsv (Coro::State self)
1924	PROTOTYPE: $	2200	PROTOTYPE: $
1925	ALIAS:	2201	ALIAS:
1926	swap_defav = 1	2202	swap_defav = 1
…		…
1933	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2209	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1934		2210
1935	SV *tmp = *src; *src = *dst; *dst = tmp;	2211	SV *tmp = *src; *src = *dst; *dst = tmp;
1936	}	2212	}
1937		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
1938	# for async_pool speedup	2310	# for async_pool speedup
1939	void	2311	void
1940	_pool_1 (SV *cb)	2312	_pool_1 (SV *cb)
1941	CODE:	2313	CODE:
1942	{	2314	{
…		…
1947	AV *invoke_av;	2319	AV *invoke_av;
1948	int i, len;	2320	int i, len;
1949		2321
1950	if (!invoke)	2322	if (!invoke)
1951	{	2323	{
1952	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2324	SV *old = PL_diehook;
		2325	PL_diehook = 0;
		2326	SvREFCNT_dec (old);
1953	croak ("\3async_pool terminate\2\n");	2327	croak ("\3async_pool terminate\2\n");
1954	}	2328	}
1955		2329
1956	SvREFCNT_dec (coro->saved_deffh);	2330	SvREFCNT_dec (coro->saved_deffh);
1957	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2331	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1958		2332
1959	hv_store (hv, "desc", sizeof ("desc") - 1,	2333	hv_store (hv, "desc", sizeof ("desc") - 1,
1960	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2334	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1961		2335
1962	invoke_av = (AV *)SvRV (invoke);	2336	invoke_av = (AV *)SvRV (invoke);
…		…
1966		2340
1967	if (len > 0)	2341	if (len > 0)
1968	{	2342	{
1969	av_fill (defav, len - 1);	2343	av_fill (defav, len - 1);
1970	for (i = 0; i < len; ++i)	2344	for (i = 0; i < len; ++i)
1971	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2345	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1972	}	2346	}
1973		2347
1974	SvREFCNT_dec (invoke);	2348	SvREFCNT_dec (invoke);
1975	}	2349	}
1976		2350
…		…
1983	sv_setsv (cb, &PL_sv_undef);	2357	sv_setsv (cb, &PL_sv_undef);
1984		2358
1985	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2359	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1986	coro->saved_deffh = 0;	2360	coro->saved_deffh = 0;
1987		2361
1988	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2362	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1989	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2363	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1990	{	2364	{
1991	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2365	SV *old = PL_diehook;
		2366	PL_diehook = 0;
		2367	SvREFCNT_dec (old);
1992	croak ("\3async_pool terminate\2\n");	2368	croak ("\3async_pool terminate\2\n");
1993	}	2369	}
1994		2370
1995	av_clear (GvAV (PL_defgv));	2371	av_clear (GvAV (PL_defgv));
1996	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2372	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
2002	api_trace (coro_current, 0);	2378	api_trace (coro_current, 0);
2003		2379
2004	av_push (av_async_pool, newSVsv (coro_current));	2380	av_push (av_async_pool, newSVsv (coro_current));
2005	}	2381	}
2006		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
2007		2431
2008	MODULE = Coro::State PACKAGE = Coro::AIO	2432	MODULE = Coro::State PACKAGE = Coro::AIO
2009		2433
2010	SV *	2434	void
2011	_get_state ()	2435	_get_state (SV *self)
2012	CODE:	2436	PPCODE:
2013	{	2437	{
2014	struct io_state *data;	2438	AV *defav = GvAV (PL_defgv);
2015		2439	AV *av = newAV ();
		2440	int i;
2016	RETVAL = newSV (sizeof (struct io_state));	2441	SV *data_sv = newSV (sizeof (struct io_state));
2017	data = (struct io_state *)SvPVX (RETVAL);	2442	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2018	SvCUR_set (RETVAL, sizeof (struct io_state));	2443	SvCUR_set (data_sv, sizeof (struct io_state));
2019	SvPOK_only (RETVAL);	2444	SvPOK_only (data_sv);
2020		2445
2021	data->errorno = errno;	2446	data->errorno = errno;
2022	data->laststype = PL_laststype;	2447	data->laststype = PL_laststype;
2023	data->laststatval = PL_laststatval;	2448	data->laststatval = PL_laststatval;
2024	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);
2025	}	2461	}
2026	OUTPUT:
2027	RETVAL
2028		2462
2029	void	2463	void
2030	_set_state (char *data_)	2464	_set_state (SV *state)
2031	PROTOTYPE: $	2465	PROTOTYPE: $
2032	CODE:	2466	PPCODE:
2033	{	2467	{
2034	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;
2035		2471
2036	errno = data->errorno;	2472	errno = data->errorno;
2037	PL_laststype = data->laststype;	2473	PL_laststype = data->laststype;
2038	PL_laststatval = data->laststatval;	2474	PL_laststatval = data->laststatval;
2039	PL_statcache = data->statcache;	2475	PL_statcache = data->statcache;
2040	}
2041		2476
		2477	EXTEND (SP, AvFILLp (av));
		2478	for (i = 0; i < AvFILLp (av); ++i)
		2479	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2480	}
		2481
		2482
		2483	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2484
		2485	BOOT:
		2486	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2487
		2488	SV *
		2489	_schedule (...)
		2490	PROTOTYPE: @
		2491	CODE:
		2492	{
		2493	static int incede;
		2494
		2495	api_cede_notself ();
		2496
		2497	++incede;
		2498	while (coro_nready >= incede && api_cede ())
		2499	;
		2500
		2501	sv_setsv (sv_activity, &PL_sv_undef);
		2502	if (coro_nready >= incede)
		2503	{
		2504	PUSHMARK (SP);
		2505	PUTBACK;
		2506	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2507	SPAGAIN;
		2508	}
		2509
		2510	--incede;
		2511	}
		2512
		2513
		2514	MODULE = Coro::State PACKAGE = PerlIO::cede
		2515
		2516	BOOT:
		2517	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2518

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