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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.237 by root, Fri May 23 00:27:06 2008 UTC vs.
Revision 1.271 by root, Fri Nov 14 07:35:32 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
…		…
45	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
46	#endif	47	#endif
47		48
48	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
49	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51	#else
52	# define REGISTER_STACK(cctx,start,end)
53	#endif	51	#endif
54		52
55	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
56	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
57		55
58	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
59	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
60	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
61	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
80	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
81	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
82	# endif	80	# endif
83	#endif	81	#endif
84		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
85	/* 5.8.8 */	93	/* 5.8.8 */
86	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
87	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
88	#endif	96	#endif
89	#ifndef newSV	97	#ifndef newSV
90	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
91	#endif	99	#endif
92		100
93	/* 5.11 */
94	#ifndef CxHASARGS
95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96	#endif
97
98	/* 5.8.7 */	101	/* 5.8.7 */
99	#ifndef SvRV_set	102	#ifndef SvRV_set
100	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
101	#endif	104	#endif
102		105
…		…
113	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
114	#endif	117	#endif
115		118
116	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
117	* portable way as possible. */	120	* portable way as possible. */
118	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
119	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
		125	#endif
120		126
121	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
122		128
123	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
124	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
127	#else	133	#else
128	# define attribute(x)	134	# define attribute(x)
129	# define BARRIER
130	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
131	#endif	137	#endif
132		138
133	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
134	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
135		141
136	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
137		143
138	#include "CoroAPI.h"	144	#include "CoroAPI.h"
139		145
140	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
141	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
144	#else	155	#else
		156
145	# define LOCK (void)0	157	# define LOCK (void)0
146	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
147	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
148		166
149	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
150	struct io_state	168	struct io_state
151	{	169	{
		170	AV *res;
152	int errorno;	171	int errorno;
153	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
154	int laststatval;	173	int laststatval;
155	Stat_t statcache;	174	Stat_t statcache;
156	};	175	};
157		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
158	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
		187
		188	struct transfer_args
		189	{
		190	struct coro *prev, *next;
		191	};
164		192
165	static GV *irsgv; /* $/ */	193	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	194	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	195	static SV *rv_diehook;
168	static SV *rv_warnhook;	196	static SV *rv_warnhook;
…		…
200	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	228	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	229	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202	JMPENV *top_env;	230	JMPENV *top_env;
203	coro_context cctx;	231	coro_context cctx;
204		232
		233	U32 gen;
205	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
206	int valgrind_id;	235	int valgrind_id;
207	#endif	236	#endif
208	unsigned char flags;	237	unsigned char flags;
209	} coro_cctx;	238	} coro_cctx;
…		…
269	#define PRIO_MIN -4	298	#define PRIO_MIN -4
270		299
271	/* for Coro.pm */	300	/* for Coro.pm */
272	static SV *coro_current;	301	static SV *coro_current;
273	static SV *coro_readyhook;	302	static SV *coro_readyhook;
274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275	static int coro_nready;
276	static struct coro *coro_first;	304	static struct coro *coro_first;
		305	#define coro_nready coroapi.nready
277		306
278	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
279		308
280	static SV *	309	static SV *
281	coro_get_sv (pTHX_ const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
…		…
321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322	#endif	351	#endif
323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324	--AvFILLp (padlist);	353	--AvFILLp (padlist);
325		354
326	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
328		357
329	return newpadlist;	358	return newpadlist;
330	}	359	}
331		360
…		…
361		390
362	/* casting is fun. */	391	/* casting is fun. */
363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	392	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364	free_padlist (aTHX_ padlist);	393	free_padlist (aTHX_ padlist);
365		394
		395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		396
366	return 0;	397	return 0;
367	}	398	}
368		399
369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370	#define CORO_MAGIC_type_state PERL_MAGIC_ext	401	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
372	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
373	0, 0, 0, 0,	404	0, 0, 0, 0,
374	coro_cv_free	405	coro_cv_free
375	};	406	};
376		407
377	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
378	SvMAGIC (sv) \	409	SvMAGIC (sv) \
379	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
380	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
381	: mg_find (sv, type) \	412	: mg_find (sv, type) \
382	: 0	413	: 0
383		414
384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386		417
387	static struct coro *	418	INLINE struct coro *
388	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
389	{	420	{
390	HV *stash;	421	HV *stash;
391	MAGIC *mg;	422	MAGIC *mg;
392		423
…		…
420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	451	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	452	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422	else	453	else
423	{	454	{
424	#if CORO_PREFER_PERL_FUNCTIONS	455	#if CORO_PREFER_PERL_FUNCTIONS
425	/* this is probably cleaner, but also slower? */	456	/* this is probably cleaner? but also slower! */
		457	/* in practise, it seems to be less stable */
426	CV *cp = Perl_cv_clone (cv);	458	CV *cp = Perl_cv_clone (cv);
427	CvPADLIST (cv) = CvPADLIST (cp);	459	CvPADLIST (cv) = CvPADLIST (cp);
428	CvPADLIST (cp) = 0;	460	CvPADLIST (cp) = 0;
429	SvREFCNT_dec (cp);	461	SvREFCNT_dec (cp);
430	#else	462	#else
…		…
616		648
617	/*	649	/*
618	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
619	*/	651	*/
620	static void	652	static void
621	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
622	{	654	{
623	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
624	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
625		657
626	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
663	#undef VAR	695	#undef VAR
664	}	696	}
665	else	697	else
666	slot = coro->slot;	698	slot = coro->slot;
667		699
		700	if (slot)
		701	{
668	rss += sizeof (slot->curstackinfo);	702	rss += sizeof (slot->curstackinfo);
669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	703	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671	rss += slot->tmps_max * sizeof (SV *);	705	rss += slot->tmps_max * sizeof (SV *);
672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	706	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673	rss += slot->scopestack_max * sizeof (I32);	707	rss += slot->scopestack_max * sizeof (I32);
674	rss += slot->savestack_max * sizeof (ANY);	708	rss += slot->savestack_max * sizeof (ANY);
675		709
676	#if !PERL_VERSION_ATLEAST (5,10,0)	710	#if !PERL_VERSION_ATLEAST (5,10,0)
677	rss += slot->retstack_max * sizeof (OP *);	711	rss += slot->retstack_max * sizeof (OP *);
678	#endif	712	#endif
		713	}
679	}	714	}
680		715
681	return rss;	716	return rss;
		717	}
		718
		719	/** set stacklevel support **************************************************/
		720
		721	/* we sometimes need to create the effect of pp_slf calling us */
		722	#define SLF_HEAD (void)0
		723	/* we sometimes need to create the effect of leaving via pp_slf */
		724	#define SLF_TAIL slf_tail (aTHX)
		725
		726	INLINE void
		727	slf_tail (pTHX)
		728	{
		729	dSP;
		730	SV **bot = SP;
		731
		732	int gimme = GIMME_V;
		733
		734	/* make sure we put something on the stack in scalar context */
		735	if (gimme == G_SCALAR)
		736	{
		737	if (sp == bot)
		738	XPUSHs (&PL_sv_undef);
		739
		740	SP = bot + 1;
		741	}
		742
		743	PUTBACK;
682	}	744	}
683		745
684	/** coroutine stack handling ************************************************/	746	/** coroutine stack handling ************************************************/
685		747
686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	748	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);	749	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		750	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		751
		752	/* apparently < 5.8.8 */
		753	#ifndef MgPV_nolen_const
		754	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		755	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		756	(const char*)(mg)->mg_ptr)
		757	#endif
688		758
689	/*	759	/*
690	* This overrides the default magic get method of %SIG elements.	760	* This overrides the default magic get method of %SIG elements.
691	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	761	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
692	* and instead of tryign to save and restore the hash elements, we just provide	762	* and instead of tryign to save and restore the hash elements, we just provide
…		…
700	{	770	{
701	const char *s = MgPV_nolen_const (mg);	771	const char *s = MgPV_nolen_const (mg);
702		772
703	if (*s == '_')	773	if (*s == '_')
704	{	774	{
705	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	775	SV **svp = 0;
706	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;	776
		777	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		778	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		779
		780	if (svp)
		781	{
		782	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		783	return 0;
		784	}
707	}	785	}
708		786
709	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;	787	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		788	}
		789
		790	static int
		791	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		792	{
		793	const char *s = MgPV_nolen_const (mg);
		794
		795	if (*s == '_')
		796	{
		797	SV **svp = 0;
		798
		799	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		800	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		801
		802	if (svp)
		803	{
		804	SV *old = *svp;
		805	*svp = 0;
		806	SvREFCNT_dec (old);
		807	return 0;
		808	}
		809	}
		810
		811	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
710	}	812	}
711		813
712	static int	814	static int
713	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	815	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
714	{	816	{
…		…
761	GvSV (PL_defgv) = newSV (0);	863	GvSV (PL_defgv) = newSV (0);
762	GvAV (PL_defgv) = coro->args; coro->args = 0;	864	GvAV (PL_defgv) = coro->args; coro->args = 0;
763	GvSV (PL_errgv) = newSV (0);	865	GvSV (PL_errgv) = newSV (0);
764	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	866	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
765	PL_rs = newSVsv (GvSV (irsgv));	867	PL_rs = newSVsv (GvSV (irsgv));
766	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	868	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
767		869
768	{	870	{
769	dSP;	871	dSP;
770	LOGOP myop;	872	UNOP myop;
771		873
772	Zero (&myop, 1, LOGOP);	874	Zero (&myop, 1, UNOP);
773	myop.op_next = Nullop;	875	myop.op_next = Nullop;
774	myop.op_flags = OPf_WANT_VOID;	876	myop.op_flags = OPf_WANT_VOID;
775		877
776	PUSHMARK (SP);	878	PUSHMARK (SP);
777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
781	SPAGAIN;	883	SPAGAIN;
782	}	884	}
783		885
784	/* this newly created coroutine might be run on an existing cctx which most	886	/* this newly created coroutine might be run on an existing cctx which most
785	* likely was suspended in set_stacklevel, called from entersub.	887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
786	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	888	* so we have to emulate entering pp_set_stacklevel here.
787	* so we ENTER here for symmetry
788	*/	889	*/
789	ENTER;	890	SLF_HEAD;
790	}	891	}
791		892
792	static void	893	static void
793	coro_destroy (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
794	{	895	{
795	if (!IN_DESTRUCT)	896	if (!IN_DESTRUCT)
796	{	897	{
797	/* restore all saved variables and stuff */	898	/* restore all saved variables and stuff */
798	LEAVE_SCOPE (0);	899	LEAVE_SCOPE (0);
…		…
820	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
821		922
822	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
823	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro->throw);
824		925
825	coro_destroy_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
826	}	927	}
827		928
828	static void	929	INLINE void
829	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
830	{	931	{
831	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
832	{	933	{
833	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
867	: cx->blk_gimme == G_SCALAR ? bot + 1	968	: cx->blk_gimme == G_SCALAR ? bot + 1
868	: bot;	969	: bot;
869		970
870	av_extend (av, top - bot);	971	av_extend (av, top - bot);
871	while (bot < top)	972	while (bot < top)
872	av_push (av, SvREFCNT_inc (*bot++));	973	av_push (av, SvREFCNT_inc_NN (*bot++));
873		974
874	PL_runops = RUNOPS_DEFAULT;	975	PL_runops = RUNOPS_DEFAULT;
875	ENTER;	976	ENTER;
876	SAVETMPS;	977	SAVETMPS;
877	EXTEND (SP, 3);	978	EXTEND (SP, 3);
…		…
957		1058
958	TAINT_NOT;	1059	TAINT_NOT;
959	return 0;	1060	return 0;
960	}	1061	}
961		1062
		1063	static void
		1064	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1065	{
		1066	ta->prev = (struct coro *)cctx;
		1067	ta->next = 0;
		1068	}
		1069
962	/* inject a fake call to Coro::State::_cctx_init into the execution */	1070	/* inject a fake call to Coro::State::_cctx_init into the execution */
963	/* _cctx_init should be careful, as it could be called at almost any time */	1071	/* _cctx_init should be careful, as it could be called at almost any time */
964	/* during execution of a perl program */	1072	/* during execution of a perl program */
		1073	/* also initialises PL_top_env */
965	static void NOINLINE	1074	static void NOINLINE
966	cctx_prepare (pTHX_ coro_cctx *cctx)	1075	cctx_prepare (pTHX_ coro_cctx *cctx)
967	{	1076	{
968	dSP;	1077	dSP;
969	LOGOP myop;	1078	UNOP myop;
970		1079
971	PL_top_env = &PL_start_env;	1080	PL_top_env = &PL_start_env;
972		1081
973	if (cctx->flags & CC_TRACE)	1082	if (cctx->flags & CC_TRACE)
974	PL_runops = runops_trace;	1083	PL_runops = runops_trace;
975		1084
976	Zero (&myop, 1, LOGOP);	1085	Zero (&myop, 1, UNOP);
977	myop.op_next = PL_op;	1086	myop.op_next = PL_op;
978	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1087	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
979		1088
980	PUSHMARK (SP);	1089	PUSHMARK (SP);
981	EXTEND (SP, 2);	1090	EXTEND (SP, 2);
982	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
983	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
984	PUTBACK;	1093	PUTBACK;
985	PL_op = (OP *)&myop;	1094	PL_op = (OP *)&myop;
986	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
987	SPAGAIN;	1096	SPAGAIN;
988	}	1097	}
989		1098
		1099	/* the tail of transfer: execute stuff we can only do after a transfer */
		1100	INLINE void
		1101	transfer_tail (pTHX)
		1102	{
		1103	struct coro *next = (struct coro *)transfer_next;
		1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1106
		1107	free_coro_mortal (aTHX);
		1108	UNLOCK;
		1109
		1110	if (expect_false (next->throw))
		1111	{
		1112	SV *exception = sv_2mortal (next->throw);
		1113
		1114	next->throw = 0;
		1115	sv_setsv (ERRSV, exception);
		1116	croak (0);
		1117	}
		1118	}
		1119
990	/*	1120	/*
991	* this is a _very_ stripped down perl interpreter ;)	1121	* this is a _very_ stripped down perl interpreter ;)
992	*/	1122	*/
993	static void	1123	static void
994	cctx_run (void *arg)	1124	cctx_run (void *arg)
995	{	1125	{
		1126	#ifdef USE_ITHREADS
		1127	# if CORO_PTHREAD
		1128	PERL_SET_CONTEXT (coro_thx);
		1129	# endif
		1130	#endif
		1131	{
996	dTHX;	1132	dTHX;
997		1133
998	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1134	/* we are the alternative tail to pp_set_stacklevel */
999	UNLOCK;	1135	/* so do the same things here */
		1136	SLF_TAIL;
1000		1137
1001	/* we now skip the entersub that lead to transfer() */	1138	/* we now skip the op that did lead to transfer() */
1002	PL_op = PL_op->op_next;	1139	PL_op = PL_op->op_next;
1003		1140
1004	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
1005	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
1006		1143
		1144	/* cctx_run is the alternative tail of transfer() */
		1145	transfer_tail (aTHX);
		1146
1007	/* somebody or something will hit me for both perl_run and PL_restartop */	1147	/* somebody or something will hit me for both perl_run and PL_restartop */
1008	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1009	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
1010		1150
1011	/*	1151	/*
1012	* If perl-run returns we assume exit() was being called or the coro	1152	* If perl-run returns we assume exit() was being called or the coro
1013	* fell off the end, which seems to be the only valid (non-bug)	1153	* fell off the end, which seems to be the only valid (non-bug)
1014	* reason for perl_run to return. We try to exit by jumping to the	1154	* reason for perl_run to return. We try to exit by jumping to the
1015	* bootstrap-time "top" top_env, as we cannot restore the "main"	1155	* bootstrap-time "top" top_env, as we cannot restore the "main"
1016	* coroutine as Coro has no such concept	1156	* coroutine as Coro has no such concept
1017	*/	1157	*/
1018	PL_top_env = main_top_env;	1158	PL_top_env = main_top_env;
1019	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1159	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1160	}
1020	}	1161	}
1021		1162
1022	static coro_cctx *	1163	static coro_cctx *
1023	cctx_new ()	1164	cctx_new ()
1024	{	1165	{
1025	coro_cctx *cctx;	1166	coro_cctx *cctx;
		1167
		1168	++cctx_count;
		1169	New (0, cctx, 1, coro_cctx);
		1170
		1171	cctx->gen = cctx_gen;
		1172	cctx->flags = 0;
		1173	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1174
		1175	return cctx;
		1176	}
		1177
		1178	/* create a new cctx only suitable as source */
		1179	static coro_cctx *
		1180	cctx_new_empty ()
		1181	{
		1182	coro_cctx *cctx = cctx_new ();
		1183
		1184	cctx->sptr = 0;
		1185	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1186
		1187	return cctx;
		1188	}
		1189
		1190	/* create a new cctx suitable as destination/running a perl interpreter */
		1191	static coro_cctx *
		1192	cctx_new_run ()
		1193	{
		1194	coro_cctx *cctx = cctx_new ();
1026	void *stack_start;	1195	void *stack_start;
1027	size_t stack_size;	1196	size_t stack_size;
1028		1197
1029	++cctx_count;
1030
1031	Newz (0, cctx, 1, coro_cctx);
1032
1033	#if HAVE_MMAP	1198	#if HAVE_MMAP
1034	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1199	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1035	/* mmap supposedly does allocate-on-write for us */	1200	/* mmap supposedly does allocate-on-write for us */
1036	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1201	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1037		1202
1038	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1039	{	1204	{
1040	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1041	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1042	# endif	1207	#endif
1043	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1044	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1045	cctx->flags |= CC_MAPPED;	1210	cctx->flags |= CC_MAPPED;
1046	}	1211	}
1047	else	1212	else
1048	#endif	1213	#endif
1049	{	1214	{
1050	cctx->ssize = coro_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1051	New (0, cctx->sptr, coro_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1052		1217
1053	if (!cctx->sptr)	1218	if (!cctx->sptr)
1054	{	1219	{
1055	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1056	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1057	}	1222	}
1058		1223
1059	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1060	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1061	}	1226	}
1062		1227
1063	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1228	#if CORO_USE_VALGRIND
		1229	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1230	#endif
		1231
1064	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1232	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1065		1233
1066	return cctx;	1234	return cctx;
1067	}	1235	}
1068		1236
…		…
1071	{	1239	{
1072	if (!cctx)	1240	if (!cctx)
1073	return;	1241	return;
1074		1242
1075	--cctx_count;	1243	--cctx_count;
		1244	coro_destroy (&cctx->cctx);
1076		1245
		1246	/* coro_transfer creates new, empty cctx's */
		1247	if (cctx->sptr)
		1248	{
1077	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1078	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1079	#endif	1251	#endif
1080		1252
1081	#if HAVE_MMAP	1253	#if HAVE_MMAP
1082	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1083	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1084	else	1256	else
1085	#endif	1257	#endif
1086	Safefree (cctx->sptr);	1258	Safefree (cctx->sptr);
		1259	}
1087		1260
1088	Safefree (cctx);	1261	Safefree (cctx);
1089	}	1262	}
1090		1263
1091	/* wether this cctx should be destructed */	1264	/* wether this cctx should be destructed */
1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1265	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1093		1266
1094	static coro_cctx *	1267	static coro_cctx *
1095	cctx_get (pTHX)	1268	cctx_get (pTHX)
1096	{	1269	{
1097	while (expect_true (cctx_first))	1270	while (expect_true (cctx_first))
…		…
1104	return cctx;	1277	return cctx;
1105		1278
1106	cctx_destroy (cctx);	1279	cctx_destroy (cctx);
1107	}	1280	}
1108		1281
1109	return cctx_new ();	1282	return cctx_new_run ();
1110	}	1283	}
1111		1284
1112	static void	1285	static void
1113	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1114	{	1287	{
		1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1289
1115	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1117	{	1292	{
1118	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
1119	cctx_first = first->next;	1294	cctx_first = first->next;
1120	--cctx_idle;	1295	--cctx_idle;
1121		1296
…		…
1153	/* always use the TRANSFER macro */	1328	/* always use the TRANSFER macro */
1154	static void NOINLINE	1329	static void NOINLINE
1155	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1330	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1156	{	1331	{
1157	dSTACKLEVEL;	1332	dSTACKLEVEL;
1158	static volatile int has_throw;
1159		1333
1160	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1161	if (expect_false (!next))	1335	if (expect_false (!next))
1162	{	1336	{
1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1164	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1338	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1165	}	1339	}
1166	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1167	{	1341	{
1168	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
1169		1343
1170	if (expect_false (prev->flags & CF_NEW))	1344	if (expect_false (prev->flags & CF_NEW))
1171	{	1345	{
1172	/* create a new empty context */	1346	/* create a new empty/source context */
1173	Newz (0, prev->cctx, 1, coro_cctx);	1347	prev->cctx = cctx_new_empty ();
1174	prev->flags &= ~CF_NEW;	1348	prev->flags &= ~CF_NEW;
1175	prev->flags |= CF_RUNNING;	1349	prev->flags |= CF_RUNNING;
1176	}	1350	}
1177		1351
1178	prev->flags &= ~CF_RUNNING;	1352	prev->flags &= ~CF_RUNNING;
…		…
1193	else	1367	else
1194	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1195		1369
1196	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1197		1371
1198	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1199	if (expect_true (	1373	if (expect_true (
1200	prev__cctx->idle_sp == STACKLEVEL	1374	prev__cctx->idle_sp == stacklevel
1201	&& !(prev__cctx->flags & CC_TRACE)	1375	&& !(prev__cctx->flags & CC_TRACE)
1202	&& !force_cctx	1376	&& !force_cctx
1203	))	1377	))
1204	{	1378	{
1205	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1206	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1380	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1207		1381
1208	prev->cctx = 0;	1382	prev->cctx = 0;
1209		1383
1210	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1384	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1211	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1385	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1219	++next->usecount;	1393	++next->usecount;
1220		1394
1221	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1222	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1223		1397
1224	has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1225		1400
1226	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1227	{	1402	{
1228	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1229	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1231	}	1406	}
1232		1407
1233	free_coro_mortal (aTHX);	1408	transfer_tail (aTHX);
1234	UNLOCK;
1235
1236	if (expect_false (has_throw))
1237	{
1238	struct coro *coro = SvSTATE (coro_current);
1239
1240	if (coro->throw)
1241	{
1242	SV *exception = coro->throw;
1243	coro->throw = 0;
1244	sv_setsv (ERRSV, exception);
1245	croak (0);
1246	}
1247	}
1248	}	1409	}
1249	}	1410	}
1250
1251	struct transfer_args
1252	{
1253	struct coro *prev, *next;
1254	};
1255		1411
1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1412	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1257	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1258		1414
1259	/** high level stuff ********************************************************/	1415	/** high level stuff ********************************************************/
…		…
1285	croak ("FATAL: tried to destroy currently running coroutine");	1441	croak ("FATAL: tried to destroy currently running coroutine");
1286		1442
1287	save_perl (aTHX_ &temp);	1443	save_perl (aTHX_ &temp);
1288	load_perl (aTHX_ coro);	1444	load_perl (aTHX_ coro);
1289		1445
1290	coro_destroy (aTHX_ coro);	1446	coro_destruct (aTHX_ coro);
1291		1447
1292	load_perl (aTHX_ &temp);	1448	load_perl (aTHX_ &temp);
1293		1449
1294	coro->slot = 0;	1450	coro->slot = 0;
1295	}	1451	}
…		…
1349	ta->next = SvSTATE (next_sv);	1505	ta->next = SvSTATE (next_sv);
1350	TRANSFER_CHECK (*ta);	1506	TRANSFER_CHECK (*ta);
1351	}	1507	}
1352		1508
1353	static void	1509	static void
1354	api_transfer (SV *prev_sv, SV *next_sv)	1510	api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1355	{	1511	{
1356	dTHX;
1357	struct transfer_args ta;	1512	struct transfer_args ta;
1358		1513
1359	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1360	TRANSFER (ta, 1);	1515	TRANSFER (ta, 1);
1361	}	1516	}
…		…
1379		1534
1380	return 0;	1535	return 0;
1381	}	1536	}
1382		1537
1383	static int	1538	static int
1384	api_ready (SV *coro_sv)	1539	api_ready (pTHX_ SV *coro_sv)
1385	{	1540	{
1386	dTHX;
1387	struct coro *coro;	1541	struct coro *coro;
1388	SV *sv_hook;	1542	SV *sv_hook;
1389	void (*xs_hook)(void);	1543	void (*xs_hook)(void);
1390		1544
1391	if (SvROK (coro_sv))	1545	if (SvROK (coro_sv))
…		…
1401	LOCK;	1555	LOCK;
1402		1556
1403	sv_hook = coro_nready ? 0 : coro_readyhook;	1557	sv_hook = coro_nready ? 0 : coro_readyhook;
1404	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1558	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1405		1559
1406	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1560	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1407	++coro_nready;	1561	++coro_nready;
1408		1562
1409	UNLOCK;	1563	UNLOCK;
1410		1564
1411	if (sv_hook)	1565	if (sv_hook)
…		…
1429		1583
1430	return 1;	1584	return 1;
1431	}	1585	}
1432		1586
1433	static int	1587	static int
1434	api_is_ready (SV *coro_sv)	1588	api_is_ready (pTHX_ SV *coro_sv)
1435	{	1589	{
1436	dTHX;
1437	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1590	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1438	}	1591	}
1439		1592
1440	static void	1593	INLINE void
1441	prepare_schedule (pTHX_ struct transfer_args *ta)	1594	prepare_schedule (pTHX_ struct transfer_args *ta)
1442	{	1595	{
1443	SV *prev_sv, *next_sv;	1596	SV *prev_sv, *next_sv;
1444		1597
1445	for (;;)	1598	for (;;)
…		…
1471	/* cannot transfer to destroyed coros, skip and look for next */	1624	/* cannot transfer to destroyed coros, skip and look for next */
1472	if (expect_false (ta->next->flags & CF_DESTROYED))	1625	if (expect_false (ta->next->flags & CF_DESTROYED))
1473	{	1626	{
1474	UNLOCK;	1627	UNLOCK;
1475	SvREFCNT_dec (next_sv);	1628	SvREFCNT_dec (next_sv);
1476	/* coro_nready is already taken care of by destroy */	1629	/* coro_nready has already been taken care of by destroy */
1477	continue;	1630	continue;
1478	}	1631	}
1479		1632
1480	--coro_nready;	1633	--coro_nready;
1481	UNLOCK;	1634	UNLOCK;
…		…
1484		1637
1485	/* free this only after the transfer */	1638	/* free this only after the transfer */
1486	prev_sv = SvRV (coro_current);	1639	prev_sv = SvRV (coro_current);
1487	ta->prev = SvSTATE (prev_sv);	1640	ta->prev = SvSTATE (prev_sv);
1488	TRANSFER_CHECK (*ta);	1641	TRANSFER_CHECK (*ta);
1489	assert (ta->next->flags & CF_READY);	1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1490	ta->next->flags &= ~CF_READY;	1643	ta->next->flags &= ~CF_READY;
1491	SvRV_set (coro_current, next_sv);	1644	SvRV_set (coro_current, next_sv);
1492		1645
1493	LOCK;	1646	LOCK;
1494	free_coro_mortal (aTHX);	1647	free_coro_mortal (aTHX);
1495	coro_mortal = prev_sv;	1648	coro_mortal = prev_sv;
1496	UNLOCK;	1649	UNLOCK;
1497	}	1650	}
1498		1651
		1652	INLINE void
		1653	prepare_cede (pTHX_ struct transfer_args *ta)
		1654	{
		1655	api_ready (aTHX_ coro_current);
		1656	prepare_schedule (aTHX_ ta);
		1657	}
		1658
1499	static void	1659	static void
1500	prepare_cede (pTHX_ struct transfer_args *ta)	1660	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1501	{	1661	{
1502	api_ready (coro_current);	1662	SV *prev = SvRV (coro_current);
		1663
		1664	if (coro_nready)
		1665	{
		1666	prepare_schedule (aTHX_ ta);
		1667	api_ready (aTHX_ prev);
		1668	}
		1669	else
		1670	ta->prev = ta->next = SvSTATE (prev);
		1671	}
		1672
		1673	static void
		1674	api_schedule (pTHX)
		1675	{
		1676	struct transfer_args ta;
		1677
1503	prepare_schedule (aTHX_ ta);	1678	prepare_schedule (aTHX_ &ta);
		1679	TRANSFER (ta, 1);
1504	}	1680	}
1505		1681
1506	static int	1682	static int
1507	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1683	api_cede (pTHX)
1508	{	1684	{
1509	if (coro_nready)	1685	struct transfer_args ta;
1510	{	1686
1511	SV *prev = SvRV (coro_current);
1512	prepare_schedule (aTHX_ ta);	1687	prepare_cede (aTHX_ &ta);
1513	api_ready (prev);	1688
		1689	if (expect_true (ta.prev != ta.next))
		1690	{
		1691	TRANSFER (ta, 1);
1514	return 1;	1692	return 1;
1515	}	1693	}
1516	else	1694	else
1517	return 0;	1695	return 0;
1518	}	1696	}
1519		1697
1520	static void
1521	api_schedule (void)
1522	{
1523	dTHX;
1524	struct transfer_args ta;
1525
1526	prepare_schedule (aTHX_ &ta);
1527	TRANSFER (ta, 1);
1528	}
1529
1530	static int	1698	static int
1531	api_cede (void)	1699	api_cede_notself (pTHX)
1532	{	1700	{
1533	dTHX;	1701	if (coro_nready)
		1702	{
1534	struct transfer_args ta;	1703	struct transfer_args ta;
1535		1704
1536	prepare_cede (aTHX_ &ta);	1705	prepare_cede_notself (aTHX_ &ta);
1537
1538	if (expect_true (ta.prev != ta.next))
1539	{
1540	TRANSFER (ta, 1);	1706	TRANSFER (ta, 1);
1541	return 1;	1707	return 1;
1542	}	1708	}
1543	else	1709	else
1544	return 0;	1710	return 0;
1545	}	1711	}
1546		1712
1547	static int
1548	api_cede_notself (void)
1549	{
1550	dTHX;
1551	struct transfer_args ta;
1552
1553	if (prepare_cede_notself (aTHX_ &ta))
1554	{
1555	TRANSFER (ta, 1);
1556	return 1;
1557	}
1558	else
1559	return 0;
1560	}
1561
1562	static void	1713	static void
1563	api_trace (SV *coro_sv, int flags)	1714	api_trace (pTHX_ SV *coro_sv, int flags)
1564	{	1715	{
1565	dTHX;
1566	struct coro *coro = SvSTATE (coro_sv);	1716	struct coro *coro = SvSTATE (coro_sv);
1567		1717
1568	if (flags & CC_TRACE)	1718	if (flags & CC_TRACE)
1569	{	1719	{
1570	if (!coro->cctx)	1720	if (!coro->cctx)
1571	coro->cctx = cctx_new ();	1721	coro->cctx = cctx_new_run ();
1572	else if (!(coro->cctx->flags & CC_TRACE))	1722	else if (!(coro->cctx->flags & CC_TRACE))
1573	croak ("cannot enable tracing on coroutine with custom stack");	1723	croak ("cannot enable tracing on coroutine with custom stack");
1574		1724
1575	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1725	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1576	}	1726	}
…		…
1583	else	1733	else
1584	coro->slot->runops = RUNOPS_DEFAULT;	1734	coro->slot->runops = RUNOPS_DEFAULT;
1585	}	1735	}
1586	}	1736	}
1587		1737
		1738	#if 0
		1739	static int
		1740	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1741	{
		1742	AV *padlist;
		1743	AV *av = (AV *)mg->mg_obj;
		1744
		1745	abort ();
		1746
		1747	return 0;
		1748	}
		1749
		1750	static MGVTBL coro_gensub_vtbl = {
		1751	0, 0, 0, 0,
		1752	coro_gensub_free
		1753	};
		1754	#endif
		1755
		1756	/*****************************************************************************/
		1757	/* PerlIO::cede */
		1758
		1759	typedef struct
		1760	{
		1761	PerlIOBuf base;
		1762	NV next, every;
		1763	} PerlIOCede;
		1764
		1765	static IV
		1766	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1767	{
		1768	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1769
		1770	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1771	self->next = nvtime () + self->every;
		1772
		1773	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1774	}
		1775
		1776	static SV *
		1777	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1778	{
		1779	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1780
		1781	return newSVnv (self->every);
		1782	}
		1783
		1784	static IV
		1785	PerlIOCede_flush (pTHX_ PerlIO *f)
		1786	{
		1787	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1788	double now = nvtime ();
		1789
		1790	if (now >= self->next)
		1791	{
		1792	api_cede (aTHX);
		1793	self->next = now + self->every;
		1794	}
		1795
		1796	return PerlIOBuf_flush (aTHX_ f);
		1797	}
		1798
		1799	static PerlIO_funcs PerlIO_cede =
		1800	{
		1801	sizeof(PerlIO_funcs),
		1802	"cede",
		1803	sizeof(PerlIOCede),
		1804	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1805	PerlIOCede_pushed,
		1806	PerlIOBuf_popped,
		1807	PerlIOBuf_open,
		1808	PerlIOBase_binmode,
		1809	PerlIOCede_getarg,
		1810	PerlIOBase_fileno,
		1811	PerlIOBuf_dup,
		1812	PerlIOBuf_read,
		1813	PerlIOBuf_unread,
		1814	PerlIOBuf_write,
		1815	PerlIOBuf_seek,
		1816	PerlIOBuf_tell,
		1817	PerlIOBuf_close,
		1818	PerlIOCede_flush,
		1819	PerlIOBuf_fill,
		1820	PerlIOBase_eof,
		1821	PerlIOBase_error,
		1822	PerlIOBase_clearerr,
		1823	PerlIOBase_setlinebuf,
		1824	PerlIOBuf_get_base,
		1825	PerlIOBuf_bufsiz,
		1826	PerlIOBuf_get_ptr,
		1827	PerlIOBuf_get_cnt,
		1828	PerlIOBuf_set_ptrcnt,
		1829	};
		1830
		1831	/*****************************************************************************/
		1832
		1833	static const CV *slf_cv; /* for quick consistency check */
		1834
		1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1836	static SV *slf_arg0;
		1837	static SV *slf_arg1;
		1838
		1839	/* this restores the stack in the case we patched the entersub, to */
		1840	/* recreate the stack frame as perl will on following calls */
		1841	/* since entersub cleared the stack */
		1842	static OP *
		1843	pp_restore (pTHX)
		1844	{
		1845	dSP;
		1846
		1847	PUSHMARK (SP);
		1848
		1849	EXTEND (SP, 3);
		1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1852	PUSHs ((SV *)CvGV (slf_cv));
		1853
		1854	RETURNOP (slf_restore.op_first);
		1855	}
		1856
		1857	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
		1858
		1859	enum {
		1860	CORO_SLF_CUSTOM = 0,
		1861	CORO_SLF_SET_STACKLEVEL = 1,
		1862	CORO_SLF_TRANSFER = 2
		1863	};
		1864
		1865	/* declare prototype */
		1866	XS(XS_Coro__State__set_stacklevel);
		1867
		1868	/*
		1869	* these not obviously related functions are all rolled into one
		1870	* function to increase chances that they all will call transfer with the same
		1871	* stack offset
		1872	* SLF stands for "schedule-like-function".
		1873	*/
		1874	static OP *
		1875	pp_slf (pTHX)
		1876	{
		1877	dSP;
		1878	struct transfer_args ta;
		1879	SV **arg = PL_stack_base + TOPMARK + 1;
		1880	int items = SP - arg; /* args without function object */
		1881	int ix = PL_op->op_private & OPpENTERSUB_SLF;
		1882	struct CoroSLF *slf = 0;
		1883	SV *gv = *sp;
		1884
		1885	/* do a quick consistency check on the "function" object, and if it isn't */
		1886	/* for us, divert to the real entersub */
		1887	if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel)
		1888	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1889
		1890	/* pop args */
		1891	SP = PL_stack_base + POPMARK;
		1892
		1893	if (!(PL_op->op_flags & OPf_STACKED))
		1894	{
		1895	/* ampersand-form of call, use @_ instead of stack */
		1896	AV *av = GvAV (PL_defgv);
		1897	arg = AvARRAY (av);
		1898	items = AvFILLp (av) + 1;
		1899	}
		1900
		1901	PUTBACK;
		1902
		1903	if (!ix)
		1904	{
		1905	slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;
		1906	ix = slf->prepare (aTHX_ arg, items);
		1907	}
		1908
		1909	switch (ix)
		1910	{
		1911	case CORO_SLF_SET_STACKLEVEL:
		1912	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1913	break;
		1914
		1915	case CORO_SLF_TRANSFER:
		1916	if (items != 2)
		1917	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1918
		1919	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1920	break;
		1921
		1922	case CORO_SLF_SCHEDULE:
		1923	prepare_schedule (aTHX_ &ta);
		1924	break;
		1925
		1926	case CORO_SLF_CEDE:
		1927	prepare_cede (aTHX_ &ta);
		1928	break;
		1929
		1930	case CORO_SLF_CEDE_NOTSELF:
		1931	prepare_cede_notself (aTHX_ &ta);
		1932	break;
		1933
		1934	default:
		1935	abort ();
		1936	}
		1937
		1938	do
		1939	TRANSFER (ta, 0);
		1940	while (slf && slf->check (aTHX));
		1941
		1942	SPAGAIN;
		1943
		1944	PUTBACK;
		1945	SLF_TAIL;
		1946	SPAGAIN;
		1947	RETURN;
		1948	}
		1949
		1950	static void
		1951	coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)
		1952	{
		1953	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1954
		1955	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
		1956	slf_cv = cv;
		1957
		1958	/* we patch the op, and then re-run the whole call */
		1959	/* we have to put the same argument on the stack for this to work */
		1960	/* and this will be done by pp_restore */
		1961	slf_restore.op_next = (OP *)&slf_restore;
		1962	slf_restore.op_type = OP_NULL;
		1963	slf_restore.op_ppaddr = pp_restore;
		1964	slf_restore.op_first = PL_op;
		1965
		1966	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1967	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1968
		1969	PL_op->op_ppaddr = pp_slf;
		1970	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
		1971
		1972	PL_op = (OP *)&slf_restore;
		1973	}
		1974
		1975	static void
		1976	api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items)
		1977	{
		1978	CvXSUBANY (cv).any_ptr = (void *)slf;
		1979	coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items);
		1980	}
		1981
1588	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1982	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1589		1983
1590	PROTOTYPES: DISABLE	1984	PROTOTYPES: DISABLE
1591		1985
1592	BOOT:	1986	BOOT:
1593	{	1987	{
1594	#ifdef USE_ITHREADS	1988	#ifdef USE_ITHREADS
1595	MUTEX_INIT (&coro_mutex);	1989	MUTEX_INIT (&coro_lock);
		1990	# if CORO_PTHREAD
		1991	coro_thx = PERL_GET_CONTEXT;
		1992	# endif
1596	#endif	1993	#endif
1597	BOOT_PAGESIZE;	1994	BOOT_PAGESIZE;
1598		1995
1599	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1996	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1600	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1997	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1601		1998
1602	orig_sigelem_get = PL_vtbl_sigelem.svt_get;	1999	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1603	PL_vtbl_sigelem.svt_get = coro_sigelem_get;	2000	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1604	orig_sigelem_set = PL_vtbl_sigelem.svt_set;	2001	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1605	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1606		2002
1607	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);	2003	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1608	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));	2004	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1609	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));	2005	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1610		2006
…		…
1619	main_top_env = PL_top_env;	2015	main_top_env = PL_top_env;
1620		2016
1621	while (main_top_env->je_prev)	2017	while (main_top_env->je_prev)
1622	main_top_env = main_top_env->je_prev;	2018	main_top_env = main_top_env->je_prev;
1623		2019
1624	coroapi.ver = CORO_API_VERSION;	2020	coroapi.ver = CORO_API_VERSION;
1625	coroapi.rev = CORO_API_REVISION;	2021	coroapi.rev = CORO_API_REVISION;
1626	coroapi.transfer = api_transfer;	2022	coroapi.transfer = api_transfer;
		2023	coroapi.execute_slf = api_execute_slf;
		2024
		2025	{
		2026	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		2027
		2028	if (!svp) croak ("Time::HiRes is required");
		2029	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		2030
		2031	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		2032	}
1627		2033
1628	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2034	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1629	}	2035	}
1630		2036
1631	SV *	2037	SV *
…		…
1655	av_push (coro->args, newSVsv (ST (i)));	2061	av_push (coro->args, newSVsv (ST (i)));
1656	}	2062	}
1657	OUTPUT:	2063	OUTPUT:
1658	RETVAL	2064	RETVAL
1659		2065
1660	# these not obviously related functions are all rolled into the same xs
1661	# function to increase chances that they all will call transfer with the same
1662	# stack offset
1663	void	2066	void
1664	_set_stacklevel (...)	2067	_set_stacklevel (...)
1665	ALIAS:	2068	ALIAS:
		2069	_set_stacklevel = CORO_SLF_SET_STACKLEVEL
1666	Coro::State::transfer = 1	2070	Coro::State::transfer = CORO_SLF_TRANSFER
1667	Coro::schedule = 2	2071	Coro::schedule = CORO_SLF_SCHEDULE
1668	Coro::cede = 3	2072	Coro::cede = CORO_SLF_CEDE
1669	Coro::cede_notself = 4	2073	Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
1670	CODE:	2074	CODE:
1671	{	2075	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1672	struct transfer_args ta;
1673
1674	PUTBACK;
1675	switch (ix)
1676	{
1677	case 0:
1678	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1679	ta.next = 0;
1680	break;
1681
1682	case 1:
1683	if (items != 2)
1684	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1685
1686	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1687	break;
1688
1689	case 2:
1690	prepare_schedule (aTHX_ &ta);
1691	break;
1692
1693	case 3:
1694	prepare_cede (aTHX_ &ta);
1695	break;
1696
1697	case 4:
1698	if (!prepare_cede_notself (aTHX_ &ta))
1699	XSRETURN_EMPTY;
1700
1701	break;
1702	}
1703	SPAGAIN;
1704
1705	BARRIER;
1706	PUTBACK;
1707	TRANSFER (ta, 0);
1708	SPAGAIN; /* might be the sp of a different coroutine now */
1709	/* be extra careful not to ever do anything after TRANSFER */
1710	}
1711		2076
1712	bool	2077	bool
1713	_destroy (SV *coro_sv)	2078	_destroy (SV *coro_sv)
1714	CODE:	2079	CODE:
1715	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2080	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1723	_exit (code);	2088	_exit (code);
1724		2089
1725	int	2090	int
1726	cctx_stacksize (int new_stacksize = 0)	2091	cctx_stacksize (int new_stacksize = 0)
1727	CODE:	2092	CODE:
1728	RETVAL = coro_stacksize;	2093	RETVAL = cctx_stacksize;
1729	if (new_stacksize)	2094	if (new_stacksize)
		2095	{
1730	coro_stacksize = new_stacksize;	2096	cctx_stacksize = new_stacksize;
		2097	++cctx_gen;
		2098	}
		2099	OUTPUT:
		2100	RETVAL
		2101
		2102	int
		2103	cctx_max_idle (int max_idle = 0)
		2104	CODE:
		2105	RETVAL = cctx_max_idle;
		2106	if (max_idle > 1)
		2107	cctx_max_idle = max_idle;
1731	OUTPUT:	2108	OUTPUT:
1732	RETVAL	2109	RETVAL
1733		2110
1734	int	2111	int
1735	cctx_count ()	2112	cctx_count ()
…		…
1759	call (Coro::State coro, SV *coderef)	2136	call (Coro::State coro, SV *coderef)
1760	ALIAS:	2137	ALIAS:
1761	eval = 1	2138	eval = 1
1762	CODE:	2139	CODE:
1763	{	2140	{
1764	if (coro->mainstack)	2141	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1765	{	2142	{
1766	struct coro temp;	2143	struct coro temp;
1767		2144
1768	if (!(coro->flags & CF_RUNNING))	2145	if (!(coro->flags & CF_RUNNING))
1769	{	2146	{
…		…
1813	RETVAL = boolSV (coro->flags & ix);	2190	RETVAL = boolSV (coro->flags & ix);
1814	OUTPUT:	2191	OUTPUT:
1815	RETVAL	2192	RETVAL
1816		2193
1817	void	2194	void
		2195	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2196	PROTOTYPE: $;$
		2197	CODE:
		2198	SvREFCNT_dec (self->throw);
		2199	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2200
		2201	void
1818	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2202	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2203	C_ARGS: aTHX_ coro, flags
1819		2204
1820	SV *	2205	SV *
1821	has_cctx (Coro::State coro)	2206	has_cctx (Coro::State coro)
1822	PROTOTYPE: $	2207	PROTOTYPE: $
1823	CODE:	2208	CODE:
…		…
1831	CODE:	2216	CODE:
1832	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2217	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1833	OUTPUT:	2218	OUTPUT:
1834	RETVAL	2219	RETVAL
1835		2220
1836	IV	2221	UV
1837	rss (Coro::State coro)	2222	rss (Coro::State coro)
1838	PROTOTYPE: $	2223	PROTOTYPE: $
1839	ALIAS:	2224	ALIAS:
1840	usecount = 1	2225	usecount = 1
1841	CODE:	2226	CODE:
…		…
1851	force_cctx ()	2236	force_cctx ()
1852	CODE:	2237	CODE:
1853	struct coro *coro = SvSTATE (coro_current);	2238	struct coro *coro = SvSTATE (coro_current);
1854	coro->cctx->idle_sp = 0;	2239	coro->cctx->idle_sp = 0;
1855		2240
1856	MODULE = Coro::State PACKAGE = Coro
1857
1858	BOOT:
1859	{
1860	int i;
1861
1862	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1863	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1864	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1865
1866	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1867	SvREADONLY_on (coro_current);
1868
1869	coro_stash = gv_stashpv ("Coro", TRUE);
1870
1871	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1872	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1873	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1874	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1875	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1876	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1877
1878	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1879	coro_ready[i] = newAV ();
1880
1881	{
1882	SV *sv = perl_get_sv ("Coro::API", TRUE);
1883	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1884
1885	coroapi.schedule = api_schedule;
1886	coroapi.cede = api_cede;
1887	coroapi.cede_notself = api_cede_notself;
1888	coroapi.ready = api_ready;
1889	coroapi.is_ready = api_is_ready;
1890	coroapi.nready = &coro_nready;
1891	coroapi.current = coro_current;
1892
1893	GCoroAPI = &coroapi;
1894	sv_setiv (sv, (IV)&coroapi);
1895	SvREADONLY_on (sv);
1896	}
1897	}
1898
1899	void
1900	_set_current (SV *current)
1901	PROTOTYPE: $
1902	CODE:
1903	SvREFCNT_dec (SvRV (coro_current));
1904	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1905
1906	void
1907	_set_readyhook (SV *hook)
1908	PROTOTYPE: $
1909	CODE:
1910	LOCK;
1911	SvREFCNT_dec (coro_readyhook);
1912	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1913	UNLOCK;
1914
1915	int
1916	prio (Coro::State coro, int newprio = 0)
1917	ALIAS:
1918	nice = 1
1919	CODE:
1920	{
1921	RETVAL = coro->prio;
1922
1923	if (items > 1)
1924	{
1925	if (ix)
1926	newprio = coro->prio - newprio;
1927
1928	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1929	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1930
1931	coro->prio = newprio;
1932	}
1933	}
1934	OUTPUT:
1935	RETVAL
1936
1937	SV *
1938	ready (SV *self)
1939	PROTOTYPE: $
1940	CODE:
1941	RETVAL = boolSV (api_ready (self));
1942	OUTPUT:
1943	RETVAL
1944
1945	int
1946	nready (...)
1947	PROTOTYPE:
1948	CODE:
1949	RETVAL = coro_nready;
1950	OUTPUT:
1951	RETVAL
1952
1953	void
1954	throw (Coro::State self, SV *throw = &PL_sv_undef)
1955	PROTOTYPE: $;$
1956	CODE:
1957	SvREFCNT_dec (self->throw);
1958	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1959
1960	void	2241	void
1961	swap_defsv (Coro::State self)	2242	swap_defsv (Coro::State self)
1962	PROTOTYPE: $	2243	PROTOTYPE: $
1963	ALIAS:	2244	ALIAS:
1964	swap_defav = 1	2245	swap_defav = 1
…		…
1971	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2252	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1972		2253
1973	SV *tmp = *src; *src = *dst; *dst = tmp;	2254	SV *tmp = *src; *src = *dst; *dst = tmp;
1974	}	2255	}
1975		2256
		2257	MODULE = Coro::State PACKAGE = Coro
		2258
		2259	BOOT:
		2260	{
		2261	int i;
		2262
		2263	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2264	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2265	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2266
		2267	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2268	SvREADONLY_on (coro_current);
		2269
		2270	coro_stash = gv_stashpv ("Coro", TRUE);
		2271
		2272	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		2273	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		2274	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		2275	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		2276	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		2277	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		2278
		2279	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		2280	coro_ready[i] = newAV ();
		2281
		2282	{
		2283	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
		2284
		2285	coroapi.schedule = api_schedule;
		2286	coroapi.cede = api_cede;
		2287	coroapi.cede_notself = api_cede_notself;
		2288	coroapi.ready = api_ready;
		2289	coroapi.is_ready = api_is_ready;
		2290	coroapi.nready = coro_nready;
		2291	coroapi.current = coro_current;
		2292
		2293	GCoroAPI = &coroapi;
		2294	sv_setiv (sv, (IV)&coroapi);
		2295	SvREADONLY_on (sv);
		2296	}
		2297	}
		2298
		2299	void
		2300	_set_current (SV *current)
		2301	PROTOTYPE: $
		2302	CODE:
		2303	SvREFCNT_dec (SvRV (coro_current));
		2304	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2305
		2306	void
		2307	_set_readyhook (SV *hook)
		2308	PROTOTYPE: $
		2309	CODE:
		2310	LOCK;
		2311	SvREFCNT_dec (coro_readyhook);
		2312	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2313	UNLOCK;
		2314
		2315	int
		2316	prio (Coro::State coro, int newprio = 0)
		2317	ALIAS:
		2318	nice = 1
		2319	CODE:
		2320	{
		2321	RETVAL = coro->prio;
		2322
		2323	if (items > 1)
		2324	{
		2325	if (ix)
		2326	newprio = coro->prio - newprio;
		2327
		2328	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		2329	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		2330
		2331	coro->prio = newprio;
		2332	}
		2333	}
		2334	OUTPUT:
		2335	RETVAL
		2336
		2337	SV *
		2338	ready (SV *self)
		2339	PROTOTYPE: $
		2340	CODE:
		2341	RETVAL = boolSV (api_ready (aTHX_ self));
		2342	OUTPUT:
		2343	RETVAL
		2344
		2345	int
		2346	nready (...)
		2347	PROTOTYPE:
		2348	CODE:
		2349	RETVAL = coro_nready;
		2350	OUTPUT:
		2351	RETVAL
		2352
1976	# for async_pool speedup	2353	# for async_pool speedup
1977	void	2354	void
1978	_pool_1 (SV *cb)	2355	_pool_1 (SV *cb)
1979	CODE:	2356	CODE:
1980	{	2357	{
…		…
1985	AV *invoke_av;	2362	AV *invoke_av;
1986	int i, len;	2363	int i, len;
1987		2364
1988	if (!invoke)	2365	if (!invoke)
1989	{	2366	{
1990	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2367	SV *old = PL_diehook;
		2368	PL_diehook = 0;
		2369	SvREFCNT_dec (old);
1991	croak ("\3async_pool terminate\2\n");	2370	croak ("\3async_pool terminate\2\n");
1992	}	2371	}
1993		2372
1994	SvREFCNT_dec (coro->saved_deffh);	2373	SvREFCNT_dec (coro->saved_deffh);
1995	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2374	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1996		2375
1997	hv_store (hv, "desc", sizeof ("desc") - 1,	2376	hv_store (hv, "desc", sizeof ("desc") - 1,
1998	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2377	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1999		2378
2000	invoke_av = (AV *)SvRV (invoke);	2379	invoke_av = (AV *)SvRV (invoke);
…		…
2004		2383
2005	if (len > 0)	2384	if (len > 0)
2006	{	2385	{
2007	av_fill (defav, len - 1);	2386	av_fill (defav, len - 1);
2008	for (i = 0; i < len; ++i)	2387	for (i = 0; i < len; ++i)
2009	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2388	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2010	}	2389	}
2011		2390
2012	SvREFCNT_dec (invoke);	2391	SvREFCNT_dec (invoke);
2013	}	2392	}
2014		2393
…		…
2021	sv_setsv (cb, &PL_sv_undef);	2400	sv_setsv (cb, &PL_sv_undef);
2022		2401
2023	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2402	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2024	coro->saved_deffh = 0;	2403	coro->saved_deffh = 0;
2025		2404
2026	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2405	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2027	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2406	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2028	{	2407	{
2029	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2408	SV *old = PL_diehook;
		2409	PL_diehook = 0;
		2410	SvREFCNT_dec (old);
2030	croak ("\3async_pool terminate\2\n");	2411	croak ("\3async_pool terminate\2\n");
2031	}	2412	}
2032		2413
2033	av_clear (GvAV (PL_defgv));	2414	av_clear (GvAV (PL_defgv));
2034	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2415	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2035	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2416	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2036		2417
2037	coro->prio = 0;	2418	coro->prio = 0;
2038		2419
2039	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2420	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2040	api_trace (coro_current, 0);	2421	api_trace (aTHX_ coro_current, 0);
2041		2422
2042	av_push (av_async_pool, newSVsv (coro_current));	2423	av_push (av_async_pool, newSVsv (coro_current));
2043	}	2424	}
2044		2425
		2426	#if 0
		2427
		2428	void
		2429	_generator_call (...)
		2430	PROTOTYPE: @
		2431	PPCODE:
		2432	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2433	xxxx
		2434	abort ();
		2435
		2436	SV *
		2437	gensub (SV *sub, ...)
		2438	PROTOTYPE: &;@
		2439	CODE:
		2440	{
		2441	struct coro *coro;
		2442	MAGIC *mg;
		2443	CV *xcv;
		2444	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2445	int i;
		2446
		2447	CvGV (ncv) = CvGV (cv);
		2448	CvFILE (ncv) = CvFILE (cv);
		2449
		2450	Newz (0, coro, 1, struct coro);
		2451	coro->args = newAV ();
		2452	coro->flags = CF_NEW;
		2453
		2454	av_extend (coro->args, items - 1);
		2455	for (i = 1; i < items; i++)
		2456	av_push (coro->args, newSVsv (ST (i)));
		2457
		2458	CvISXSUB_on (ncv);
		2459	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2460
		2461	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2462
		2463	CvXSUB (ncv) = CvXSUB (xcv);
		2464	CvANON_on (ncv);
		2465
		2466	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2467	RETVAL = newRV_noinc ((SV *)ncv);
		2468	}
		2469	OUTPUT:
		2470	RETVAL
		2471
		2472	#endif
		2473
2045		2474
2046	MODULE = Coro::State PACKAGE = Coro::AIO	2475	MODULE = Coro::State PACKAGE = Coro::AIO
2047		2476
2048	SV *	2477	void
2049	_get_state ()	2478	_get_state (SV *self)
2050	CODE:	2479	PPCODE:
2051	{	2480	{
2052	struct io_state *data;	2481	AV *defav = GvAV (PL_defgv);
2053		2482	AV *av = newAV ();
		2483	int i;
2054	RETVAL = newSV (sizeof (struct io_state));	2484	SV *data_sv = newSV (sizeof (struct io_state));
2055	data = (struct io_state *)SvPVX (RETVAL);	2485	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2056	SvCUR_set (RETVAL, sizeof (struct io_state));	2486	SvCUR_set (data_sv, sizeof (struct io_state));
2057	SvPOK_only (RETVAL);	2487	SvPOK_only (data_sv);
2058		2488
2059	data->errorno = errno;	2489	data->errorno = errno;
2060	data->laststype = PL_laststype;	2490	data->laststype = PL_laststype;
2061	data->laststatval = PL_laststatval;	2491	data->laststatval = PL_laststatval;
2062	data->statcache = PL_statcache;	2492	data->statcache = PL_statcache;
		2493
		2494	av_extend (av, AvFILLp (defav) + 1 + 1);
		2495
		2496	for (i = 0; i <= AvFILLp (defav); ++i)
		2497	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2498
		2499	av_push (av, data_sv);
		2500
		2501	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2502
		2503	api_ready (aTHX_ self);
2063	}	2504	}
2064	OUTPUT:
2065	RETVAL
2066		2505
2067	void	2506	void
2068	_set_state (char *data_)	2507	_set_state (SV *state)
2069	PROTOTYPE: $	2508	PROTOTYPE: $
2070	CODE:	2509	PPCODE:
2071	{	2510	{
2072	struct io_state *data = (void *)data_;	2511	AV *av = (AV *)SvRV (state);
		2512	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2513	int i;
2073		2514
2074	errno = data->errorno;	2515	errno = data->errorno;
2075	PL_laststype = data->laststype;	2516	PL_laststype = data->laststype;
2076	PL_laststatval = data->laststatval;	2517	PL_laststatval = data->laststatval;
2077	PL_statcache = data->statcache;	2518	PL_statcache = data->statcache;
		2519
		2520	EXTEND (SP, AvFILLp (av));
		2521	for (i = 0; i < AvFILLp (av); ++i)
		2522	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2078	}	2523	}
2079		2524
2080		2525
2081	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2526	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2082		2527
…		…
2088	PROTOTYPE: @	2533	PROTOTYPE: @
2089	CODE:	2534	CODE:
2090	{	2535	{
2091	static int incede;	2536	static int incede;
2092		2537
2093	api_cede_notself ();	2538	api_cede_notself (aTHX);
2094		2539
2095	++incede;	2540	++incede;
2096	while (coro_nready >= incede && api_cede ())	2541	while (coro_nready >= incede && api_cede (aTHX))
2097	;	2542	;
2098		2543
2099	sv_setsv (sv_activity, &PL_sv_undef);	2544	sv_setsv (sv_activity, &PL_sv_undef);
2100	if (coro_nready >= incede)	2545	if (coro_nready >= incede)
2101	{	2546	{
…		…
2106	}	2551	}
2107		2552
2108	--incede;	2553	--incede;
2109	}	2554	}
2110		2555
		2556
		2557	MODULE = Coro::State PACKAGE = PerlIO::cede
		2558
		2559	BOOT:
		2560	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2561

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