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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.235 by root, Sat May 10 00:13:18 2008 UTC vs.
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
…		…
45	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
46	#endif	47	#endif
47		48
48	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
49	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51	#else
52	# define REGISTER_STACK(cctx,start,end)
53	#endif	51	#endif
54		52
55	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
56	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
57		55
58	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
59	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
60	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
61	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
80	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
81	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
82	# endif	80	# endif
83	#endif	81	#endif
84		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
85	/* 5.8.8 */	93	/* 5.8.8 */
86	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
87	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
88	#endif	96	#endif
89	#ifndef newSV	97	#ifndef newSV
90	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
91	#endif
92
93	/* 5.11 */
94	#ifndef CxHASARGS
95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96	#endif	99	#endif
97		100
98	/* 5.8.7 */	101	/* 5.8.7 */
99	#ifndef SvRV_set	102	#ifndef SvRV_set
100	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
…		…
120		123
121	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
122		125
123	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
124	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
127	#else	130	#else
128	# define attribute(x)	131	# define attribute(x)
129	# define BARRIER
130	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
131	#endif	134	#endif
132		135
133	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
134	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
135		138
136	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
137		140
138	#include "CoroAPI.h"	141	#include "CoroAPI.h"
139		142
140	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
141	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	147	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		148	# if CORO_PTHREAD
		149	static void *coro_thx;
		150	# endif
		151
144	#else	152	#else
		153
145	# define LOCK (void)0	154	# define LOCK (void)0
146	# define UNLOCK (void)0	155	# define UNLOCK (void)0
		156
147	#endif	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
148		163
149	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
150	struct io_state	165	struct io_state
151	{	166	{
		167	AV *res;
152	int errorno;	168	int errorno;
153	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
154	int laststatval;	170	int laststatval;
155	Stat_t statcache;	171	Stat_t statcache;
156	};	172	};
157		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
158	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed after next transfer */	182	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		183	static volatile struct coro *transfer_next;
		184
		185	struct transfer_args
		186	{
		187	struct coro *prev, *next;
		188	};
164		189
165	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	192	static SV *rv_diehook;
168	static SV *rv_warnhook;	193	static SV *rv_warnhook;
…		…
200	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	226	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202	JMPENV *top_env;	227	JMPENV *top_env;
203	coro_context cctx;	228	coro_context cctx;
204		229
		230	U32 gen;
205	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
206	int valgrind_id;	232	int valgrind_id;
207	#endif	233	#endif
208	unsigned char flags;	234	unsigned char flags;
209	} coro_cctx;	235	} coro_cctx;
…		…
269	#define PRIO_MIN -4	295	#define PRIO_MIN -4
270		296
271	/* for Coro.pm */	297	/* for Coro.pm */
272	static SV *coro_current;	298	static SV *coro_current;
273	static SV *coro_readyhook;	299	static SV *coro_readyhook;
274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275	static int coro_nready;	301	static int coro_nready;
276	static struct coro *coro_first;	302	static struct coro *coro_first;
277		303
278	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
279		305
…		…
321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322	#endif	348	#endif
323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324	--AvFILLp (padlist);	350	--AvFILLp (padlist);
325		351
326	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
328		354
329	return newpadlist;	355	return newpadlist;
330	}	356	}
331		357
…		…
361		387
362	/* casting is fun. */	388	/* casting is fun. */
363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
365		391
		392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		393
366	return 0;	394	return 0;
367	}	395	}
368		396
369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370	#define CORO_MAGIC_type_state PERL_MAGIC_ext	398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
372	static MGVTBL coro_cv_vtbl = {	400	static MGVTBL coro_cv_vtbl = {
373	0, 0, 0, 0,	401	0, 0, 0, 0,
374	coro_cv_free	402	coro_cv_free
375	};	403	};
376		404
377	#define CORO_MAGIC(sv,type) \	405	#define CORO_MAGIC(sv, type) \
378	SvMAGIC (sv) \	406	SvMAGIC (sv) \
379	? SvMAGIC (sv)->mg_type == type \	407	? SvMAGIC (sv)->mg_type == type \
380	? SvMAGIC (sv) \	408	? SvMAGIC (sv) \
381	: mg_find (sv, type) \	409	: mg_find (sv, type) \
382	: 0	410	: 0
383		411
384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	412	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	413	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386		414
387	static struct coro *	415	INLINE struct coro *
388	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
389	{	417	{
390	HV *stash;	418	HV *stash;
391	MAGIC *mg;	419	MAGIC *mg;
392		420
…		…
420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422	else	450	else
423	{	451	{
424	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
425	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
426	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
427	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
428	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
429	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
430	#else	459	#else
…		…
616		645
617	/*	646	/*
618	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
619	*/	648	*/
620	static void	649	static void
621	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
622	{	651	{
623	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
624	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
625		654
626	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
663	#undef VAR	692	#undef VAR
664	}	693	}
665	else	694	else
666	slot = coro->slot;	695	slot = coro->slot;
667		696
		697	if (slot)
		698	{
668	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	701	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
674	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
675		706
676	#if !PERL_VERSION_ATLEAST (5,10,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
677	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
678	#endif	709	#endif
		710	}
679	}	711	}
680		712
681	return rss;	713	return rss;
		714	}
		715
		716	/** set stacklevel support **************************************************/
		717
		718	/* we sometimes need to create the effect of pp_set_stacklevel calling us */
		719	#define SSL_HEAD (void)0
		720	/* we sometimes 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	SV **bot = SP;
		728
		729	int gimme = GIMME_V;
		730
		731	/* make sure we put something on the stack in scalar context */
		732	if (gimme == G_SCALAR)
		733	{
		734	if (sp == bot)
		735	XPUSHs (&PL_sv_undef);
		736
		737	SP = bot + 1;
		738	}
		739
		740	PUTBACK;
682	}	741	}
683		742
684	/** coroutine stack handling ************************************************/	743	/** coroutine stack handling ************************************************/
685		744
686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	745	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);	746	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		747	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		748
		749	/* apparently < 5.8.8 */
		750	#ifndef MgPV_nolen_const
		751	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		752	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		753	(const char*)(mg)->mg_ptr)
		754	#endif
688		755
689	/*	756	/*
690	* This overrides the default magic get method of %SIG elements.	757	* 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	758	* 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	759	* and instead of tryign to save and restore the hash elements, we just provide
…		…
700	{	767	{
701	const char *s = MgPV_nolen_const (mg);	768	const char *s = MgPV_nolen_const (mg);
702		769
703	if (*s == '_')	770	if (*s == '_')
704	{	771	{
705	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	772	SV **svp = 0;
706	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;	773
		774	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		775	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		776
		777	if (svp)
		778	{
		779	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		780	return 0;
		781	}
707	}	782	}
708		783
709	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;	784	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		785	}
		786
		787	static int
		788	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		789	{
		790	const char *s = MgPV_nolen_const (mg);
		791
		792	if (*s == '_')
		793	{
		794	SV **svp = 0;
		795
		796	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		797	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		798
		799	if (svp)
		800	{
		801	SV *old = *svp;
		802	*svp = 0;
		803	SvREFCNT_dec (old);
		804	return 0;
		805	}
		806	}
		807
		808	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
710	}	809	}
711		810
712	static int	811	static int
713	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	812	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
714	{	813	{
…		…
761	GvSV (PL_defgv) = newSV (0);	860	GvSV (PL_defgv) = newSV (0);
762	GvAV (PL_defgv) = coro->args; coro->args = 0;	861	GvAV (PL_defgv) = coro->args; coro->args = 0;
763	GvSV (PL_errgv) = newSV (0);	862	GvSV (PL_errgv) = newSV (0);
764	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	863	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
765	PL_rs = newSVsv (GvSV (irsgv));	864	PL_rs = newSVsv (GvSV (irsgv));
766	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	865	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
767		866
768	{	867	{
769	dSP;	868	dSP;
770	LOGOP myop;	869	UNOP myop;
771		870
772	Zero (&myop, 1, LOGOP);	871	Zero (&myop, 1, UNOP);
773	myop.op_next = Nullop;	872	myop.op_next = Nullop;
774	myop.op_flags = OPf_WANT_VOID;	873	myop.op_flags = OPf_WANT_VOID;
775		874
776	PUSHMARK (SP);	875	PUSHMARK (SP);
777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	876	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	879	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
781	SPAGAIN;	880	SPAGAIN;
782	}	881	}
783		882
784	/* this newly created coroutine might be run on an existing cctx which most	883	/* this newly created coroutine might be run on an existing cctx which most
785	* likely was suspended in set_stacklevel, called from entersub.	884	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
786	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	885	* so we have to emulate entering pp_set_stacklevel here.
787	* so we ENTER here for symmetry
788	*/	886	*/
789	ENTER;	887	SSL_HEAD;
790	}	888	}
791		889
792	static void	890	static void
793	coro_destroy (pTHX_ struct coro *coro)	891	coro_destruct (pTHX_ struct coro *coro)
794	{	892	{
795	if (!IN_DESTRUCT)	893	if (!IN_DESTRUCT)
796	{	894	{
797	/* restore all saved variables and stuff */	895	/* restore all saved variables and stuff */
798	LEAVE_SCOPE (0);	896	LEAVE_SCOPE (0);
…		…
820	SvREFCNT_dec (PL_warnhook);	918	SvREFCNT_dec (PL_warnhook);
821		919
822	SvREFCNT_dec (coro->saved_deffh);	920	SvREFCNT_dec (coro->saved_deffh);
823	SvREFCNT_dec (coro->throw);	921	SvREFCNT_dec (coro->throw);
824		922
825	coro_destroy_stacks (aTHX);	923	coro_destruct_stacks (aTHX);
826	}	924	}
827		925
828	static void	926	INLINE void
829	free_coro_mortal (pTHX)	927	free_coro_mortal (pTHX)
830	{	928	{
831	if (expect_true (coro_mortal))	929	if (expect_true (coro_mortal))
832	{	930	{
833	SvREFCNT_dec (coro_mortal);	931	SvREFCNT_dec (coro_mortal);
…		…
867	: cx->blk_gimme == G_SCALAR ? bot + 1	965	: cx->blk_gimme == G_SCALAR ? bot + 1
868	: bot;	966	: bot;
869		967
870	av_extend (av, top - bot);	968	av_extend (av, top - bot);
871	while (bot < top)	969	while (bot < top)
872	av_push (av, SvREFCNT_inc (*bot++));	970	av_push (av, SvREFCNT_inc_NN (*bot++));
873		971
874	PL_runops = RUNOPS_DEFAULT;	972	PL_runops = RUNOPS_DEFAULT;
875	ENTER;	973	ENTER;
876	SAVETMPS;	974	SAVETMPS;
877	EXTEND (SP, 3);	975	EXTEND (SP, 3);
…		…
957		1055
958	TAINT_NOT;	1056	TAINT_NOT;
959	return 0;	1057	return 0;
960	}	1058	}
961		1059
		1060	static void
		1061	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1062	{
		1063	ta->prev = (struct coro *)cctx;
		1064	ta->next = 0;
		1065	}
		1066
962	/* inject a fake call to Coro::State::_cctx_init into the execution */	1067	/* 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 */	1068	/* _cctx_init should be careful, as it could be called at almost any time */
964	/* during execution of a perl program */	1069	/* during execution of a perl program */
		1070	/* also initialises PL_top_env */
965	static void NOINLINE	1071	static void NOINLINE
966	cctx_prepare (pTHX_ coro_cctx *cctx)	1072	cctx_prepare (pTHX_ coro_cctx *cctx)
967	{	1073	{
968	dSP;	1074	dSP;
969	LOGOP myop;	1075	UNOP myop;
970		1076
971	PL_top_env = &PL_start_env;	1077	PL_top_env = &PL_start_env;
972		1078
973	if (cctx->flags & CC_TRACE)	1079	if (cctx->flags & CC_TRACE)
974	PL_runops = runops_trace;	1080	PL_runops = runops_trace;
975		1081
976	Zero (&myop, 1, LOGOP);	1082	Zero (&myop, 1, UNOP);
977	myop.op_next = PL_op;	1083	myop.op_next = PL_op;
978	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1084	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
979		1085
980	PUSHMARK (SP);	1086	PUSHMARK (SP);
981	EXTEND (SP, 2);	1087	EXTEND (SP, 2);
982	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1088	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
983	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1089	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
984	PUTBACK;	1090	PUTBACK;
985	PL_op = (OP *)&myop;	1091	PL_op = (OP *)&myop;
986	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1092	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
987	SPAGAIN;	1093	SPAGAIN;
988	}	1094	}
989		1095
		1096	/* the tail of transfer: execute stuff we can only do after a transfer */
		1097	INLINE void
		1098	transfer_tail (pTHX)
		1099	{
		1100	struct coro *next = (struct coro *)transfer_next;
		1101	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1102	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1103
		1104	free_coro_mortal (aTHX);
		1105	UNLOCK;
		1106
		1107	if (expect_false (next->throw))
		1108	{
		1109	SV *exception = sv_2mortal (next->throw);
		1110
		1111	next->throw = 0;
		1112	sv_setsv (ERRSV, exception);
		1113	croak (0);
		1114	}
		1115	}
		1116
990	/*	1117	/*
991	* this is a _very_ stripped down perl interpreter ;)	1118	* this is a _very_ stripped down perl interpreter ;)
992	*/	1119	*/
993	static void	1120	static void
994	cctx_run (void *arg)	1121	cctx_run (void *arg)
995	{	1122	{
		1123	#ifdef USE_ITHREADS
		1124	# if CORO_PTHREAD
		1125	PERL_SET_CONTEXT (coro_thx);
		1126	# endif
		1127	#endif
		1128	{
996	dTHX;	1129	dTHX;
997		1130
998	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1131	/* we are the alternative tail to pp_set_stacklevel */
999	UNLOCK;	1132	/* so do the same things here */
		1133	SSL_TAIL;
1000		1134
1001	/* we now skip the entersub that lead to transfer() */	1135	/* we now skip the op that did lead to transfer() */
1002	PL_op = PL_op->op_next;	1136	PL_op = PL_op->op_next;
1003		1137
1004	/* inject a fake subroutine call to cctx_init */	1138	/* inject a fake subroutine call to cctx_init */
1005	cctx_prepare (aTHX_ (coro_cctx *)arg);	1139	cctx_prepare (aTHX_ (coro_cctx *)arg);
1006		1140
		1141	/* cctx_run is the alternative tail of transfer() */
		1142	transfer_tail (aTHX);
		1143
1007	/* somebody or something will hit me for both perl_run and PL_restartop */	1144	/* somebody or something will hit me for both perl_run and PL_restartop */
1008	PL_restartop = PL_op;	1145	PL_restartop = PL_op;
1009	perl_run (PL_curinterp);	1146	perl_run (PL_curinterp);
1010		1147
1011	/*	1148	/*
1012	* If perl-run returns we assume exit() was being called or the coro	1149	* 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)	1150	* 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	1151	* 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"	1152	* bootstrap-time "top" top_env, as we cannot restore the "main"
1016	* coroutine as Coro has no such concept	1153	* coroutine as Coro has no such concept
1017	*/	1154	*/
1018	PL_top_env = main_top_env;	1155	PL_top_env = main_top_env;
1019	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1156	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1157	}
1020	}	1158	}
1021		1159
1022	static coro_cctx *	1160	static coro_cctx *
1023	cctx_new ()	1161	cctx_new ()
1024	{	1162	{
1025	coro_cctx *cctx;	1163	coro_cctx *cctx;
		1164
		1165	++cctx_count;
		1166	New (0, cctx, 1, coro_cctx);
		1167
		1168	cctx->gen = cctx_gen;
		1169	cctx->flags = 0;
		1170	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1171
		1172	return cctx;
		1173	}
		1174
		1175	/* create a new cctx only suitable as source */
		1176	static coro_cctx *
		1177	cctx_new_empty ()
		1178	{
		1179	coro_cctx *cctx = cctx_new ();
		1180
		1181	cctx->sptr = 0;
		1182	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1183
		1184	return cctx;
		1185	}
		1186
		1187	/* create a new cctx suitable as destination/running a perl interpreter */
		1188	static coro_cctx *
		1189	cctx_new_run ()
		1190	{
		1191	coro_cctx *cctx = cctx_new ();
1026	void *stack_start;	1192	void *stack_start;
1027	size_t stack_size;	1193	size_t stack_size;
1028		1194
1029	++cctx_count;
1030
1031	Newz (0, cctx, 1, coro_cctx);
1032
1033	#if HAVE_MMAP	1195	#if HAVE_MMAP
1034	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1196	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1035	/* mmap supposedly does allocate-on-write for us */	1197	/* 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);	1198	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1037		1199
1038	if (cctx->sptr != (void *)-1)	1200	if (cctx->sptr != (void *)-1)
1039	{	1201	{
1040	# if CORO_STACKGUARD	1202	#if CORO_STACKGUARD
1041	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1203	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1042	# endif	1204	#endif
1043	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1205	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1044	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1206	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1045	cctx->flags |= CC_MAPPED;	1207	cctx->flags |= CC_MAPPED;
1046	}	1208	}
1047	else	1209	else
1048	#endif	1210	#endif
1049	{	1211	{
1050	cctx->ssize = coro_stacksize * (long)sizeof (long);	1212	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1051	New (0, cctx->sptr, coro_stacksize, long);	1213	New (0, cctx->sptr, cctx_stacksize, long);
1052		1214
1053	if (!cctx->sptr)	1215	if (!cctx->sptr)
1054	{	1216	{
1055	perror ("FATAL: unable to allocate stack for coroutine");	1217	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1056	_exit (EXIT_FAILURE);	1218	_exit (EXIT_FAILURE);
1057	}	1219	}
1058		1220
1059	stack_start = cctx->sptr;	1221	stack_start = cctx->sptr;
1060	stack_size = cctx->ssize;	1222	stack_size = cctx->ssize;
1061	}	1223	}
1062		1224
1063	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1225	#if CORO_USE_VALGRIND
		1226	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1227	#endif
		1228
1064	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1229	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1065		1230
1066	return cctx;	1231	return cctx;
1067	}	1232	}
1068		1233
…		…
1071	{	1236	{
1072	if (!cctx)	1237	if (!cctx)
1073	return;	1238	return;
1074		1239
1075	--cctx_count;	1240	--cctx_count;
		1241	coro_destroy (&cctx->cctx);
1076		1242
		1243	/* coro_transfer creates new, empty cctx's */
		1244	if (cctx->sptr)
		1245	{
1077	#if CORO_USE_VALGRIND	1246	#if CORO_USE_VALGRIND
1078	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1247	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1079	#endif	1248	#endif
1080		1249
1081	#if HAVE_MMAP	1250	#if HAVE_MMAP
1082	if (cctx->flags & CC_MAPPED)	1251	if (cctx->flags & CC_MAPPED)
1083	munmap (cctx->sptr, cctx->ssize);	1252	munmap (cctx->sptr, cctx->ssize);
1084	else	1253	else
1085	#endif	1254	#endif
1086	Safefree (cctx->sptr);	1255	Safefree (cctx->sptr);
		1256	}
1087		1257
1088	Safefree (cctx);	1258	Safefree (cctx);
1089	}	1259	}
1090		1260
1091	/* wether this cctx should be destructed */	1261	/* wether this cctx should be destructed */
1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1262	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1093		1263
1094	static coro_cctx *	1264	static coro_cctx *
1095	cctx_get (pTHX)	1265	cctx_get (pTHX)
1096	{	1266	{
1097	while (expect_true (cctx_first))	1267	while (expect_true (cctx_first))
…		…
1104	return cctx;	1274	return cctx;
1105		1275
1106	cctx_destroy (cctx);	1276	cctx_destroy (cctx);
1107	}	1277	}
1108		1278
1109	return cctx_new ();	1279	return cctx_new_run ();
1110	}	1280	}
1111		1281
1112	static void	1282	static void
1113	cctx_put (coro_cctx *cctx)	1283	cctx_put (coro_cctx *cctx)
1114	{	1284	{
		1285	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1286
1115	/* free another cctx if overlimit */	1287	/* free another cctx if overlimit */
1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1288	if (expect_false (cctx_idle >= cctx_max_idle))
1117	{	1289	{
1118	coro_cctx *first = cctx_first;	1290	coro_cctx *first = cctx_first;
1119	cctx_first = first->next;	1291	cctx_first = first->next;
1120	--cctx_idle;	1292	--cctx_idle;
1121		1293
…		…
1153	/* always use the TRANSFER macro */	1325	/* always use the TRANSFER macro */
1154	static void NOINLINE	1326	static void NOINLINE
1155	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1327	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1156	{	1328	{
1157	dSTACKLEVEL;	1329	dSTACKLEVEL;
1158	static volatile int has_throw;
1159		1330
1160	/* sometimes transfer is only called to set idle_sp */	1331	/* sometimes transfer is only called to set idle_sp */
1161	if (expect_false (!next))	1332	if (expect_false (!next))
1162	{	1333	{
1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1334	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1167	{	1338	{
1168	coro_cctx *prev__cctx;	1339	coro_cctx *prev__cctx;
1169		1340
1170	if (expect_false (prev->flags & CF_NEW))	1341	if (expect_false (prev->flags & CF_NEW))
1171	{	1342	{
1172	/* create a new empty context */	1343	/* create a new empty/source context */
1173	Newz (0, prev->cctx, 1, coro_cctx);	1344	prev->cctx = cctx_new_empty ();
1174	prev->flags &= ~CF_NEW;	1345	prev->flags &= ~CF_NEW;
1175	prev->flags |= CF_RUNNING;	1346	prev->flags |= CF_RUNNING;
1176	}	1347	}
1177		1348
1178	prev->flags &= ~CF_RUNNING;	1349	prev->flags &= ~CF_RUNNING;
…		…
1193	else	1364	else
1194	load_perl (aTHX_ next);	1365	load_perl (aTHX_ next);
1195		1366
1196	prev__cctx = prev->cctx;	1367	prev__cctx = prev->cctx;
1197		1368
1198	/* possibly "free" the cctx */	1369	/* possibly untie and reuse the cctx */
1199	if (expect_true (	1370	if (expect_true (
1200	prev__cctx->idle_sp == STACKLEVEL	1371	prev__cctx->idle_sp == STACKLEVEL
1201	&& !(prev__cctx->flags & CC_TRACE)	1372	&& !(prev__cctx->flags & CC_TRACE)
1202	&& !force_cctx	1373	&& !force_cctx
1203	))	1374	))
1204	{	1375	{
1205	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1376	/* 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));	1377	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1207		1378
1208	prev->cctx = 0;	1379	prev->cctx = 0;
1209		1380
1210	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1381	/* 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 */	1382	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1219	++next->usecount;	1390	++next->usecount;
1220		1391
1221	if (expect_true (!next->cctx))	1392	if (expect_true (!next->cctx))
1222	next->cctx = cctx_get (aTHX);	1393	next->cctx = cctx_get (aTHX);
1223		1394
1224	has_throw = !!next->throw;	1395	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1396	transfer_next = next;
1225		1397
1226	if (expect_false (prev__cctx != next->cctx))	1398	if (expect_false (prev__cctx != next->cctx))
1227	{	1399	{
1228	prev__cctx->top_env = PL_top_env;	1400	prev__cctx->top_env = PL_top_env;
1229	PL_top_env = next->cctx->top_env;	1401	PL_top_env = next->cctx->top_env;
1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1402	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1231	}	1403	}
1232		1404
1233	free_coro_mortal (aTHX);	1405	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	}	1406	}
1249	}	1407	}
1250
1251	struct transfer_args
1252	{
1253	struct coro *prev, *next;
1254	};
1255		1408
1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1409	#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)	1410	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1258		1411
1259	/** high level stuff ********************************************************/	1412	/** high level stuff ********************************************************/
…		…
1285	croak ("FATAL: tried to destroy currently running coroutine");	1438	croak ("FATAL: tried to destroy currently running coroutine");
1286		1439
1287	save_perl (aTHX_ &temp);	1440	save_perl (aTHX_ &temp);
1288	load_perl (aTHX_ coro);	1441	load_perl (aTHX_ coro);
1289		1442
1290	coro_destroy (aTHX_ coro);	1443	coro_destruct (aTHX_ coro);
1291		1444
1292	load_perl (aTHX_ &temp);	1445	load_perl (aTHX_ &temp);
1293		1446
1294	coro->slot = 0;	1447	coro->slot = 0;
1295	}	1448	}
…		…
1383	static int	1536	static int
1384	api_ready (SV *coro_sv)	1537	api_ready (SV *coro_sv)
1385	{	1538	{
1386	dTHX;	1539	dTHX;
1387	struct coro *coro;	1540	struct coro *coro;
1388	SV *hook;	1541	SV *sv_hook;
		1542	void (*xs_hook)(void);
1389		1543
1390	if (SvROK (coro_sv))	1544	if (SvROK (coro_sv))
1391	coro_sv = SvRV (coro_sv);	1545	coro_sv = SvRV (coro_sv);
1392		1546
1393	coro = SvSTATE (coro_sv);	1547	coro = SvSTATE (coro_sv);
…		…
1397		1551
1398	coro->flags |= CF_READY;	1552	coro->flags |= CF_READY;
1399		1553
1400	LOCK;	1554	LOCK;
1401		1555
1402	hook = coro_nready ? 0 : coro_readyhook;	1556	sv_hook = coro_nready ? 0 : coro_readyhook;
		1557	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1403		1558
1404	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1559	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1405	++coro_nready;	1560	++coro_nready;
1406		1561
1407	UNLOCK;	1562	UNLOCK;
1408		1563
1409	if (hook)	1564	if (sv_hook)
1410	{	1565	{
1411	dSP;	1566	dSP;
1412		1567
1413	ENTER;	1568	ENTER;
1414	SAVETMPS;	1569	SAVETMPS;
1415		1570
1416	PUSHMARK (SP);	1571	PUSHMARK (SP);
1417	PUTBACK;	1572	PUTBACK;
1418	call_sv (hook, G_DISCARD);	1573	call_sv (sv_hook, G_DISCARD);
1419	SPAGAIN;	1574	SPAGAIN;
1420		1575
1421	FREETMPS;	1576	FREETMPS;
1422	LEAVE;	1577	LEAVE;
1423	}	1578	}
1424		1579
		1580	if (xs_hook)
		1581	xs_hook ();
		1582
1425	return 1;	1583	return 1;
1426	}	1584	}
1427		1585
1428	static int	1586	static int
1429	api_is_ready (SV *coro_sv)	1587	api_is_ready (SV *coro_sv)
1430	{	1588	{
1431	dTHX;	1589	dTHX;
		1590
1432	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1591	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1433	}	1592	}
1434		1593
1435	static void	1594	INLINE void
1436	prepare_schedule (pTHX_ struct transfer_args *ta)	1595	prepare_schedule (pTHX_ struct transfer_args *ta)
1437	{	1596	{
1438	SV *prev_sv, *next_sv;	1597	SV *prev_sv, *next_sv;
1439		1598
1440	for (;;)	1599	for (;;)
…		…
1466	/* cannot transfer to destroyed coros, skip and look for next */	1625	/* cannot transfer to destroyed coros, skip and look for next */
1467	if (expect_false (ta->next->flags & CF_DESTROYED))	1626	if (expect_false (ta->next->flags & CF_DESTROYED))
1468	{	1627	{
1469	UNLOCK;	1628	UNLOCK;
1470	SvREFCNT_dec (next_sv);	1629	SvREFCNT_dec (next_sv);
1471	/* coro_nready is already taken care of by destroy */	1630	/* coro_nready has already been taken care of by destroy */
1472	continue;	1631	continue;
1473	}	1632	}
1474		1633
1475	--coro_nready;	1634	--coro_nready;
1476	UNLOCK;	1635	UNLOCK;
…		…
1479		1638
1480	/* free this only after the transfer */	1639	/* free this only after the transfer */
1481	prev_sv = SvRV (coro_current);	1640	prev_sv = SvRV (coro_current);
1482	ta->prev = SvSTATE (prev_sv);	1641	ta->prev = SvSTATE (prev_sv);
1483	TRANSFER_CHECK (*ta);	1642	TRANSFER_CHECK (*ta);
1484	assert (ta->next->flags & CF_READY);	1643	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1485	ta->next->flags &= ~CF_READY;	1644	ta->next->flags &= ~CF_READY;
1486	SvRV_set (coro_current, next_sv);	1645	SvRV_set (coro_current, next_sv);
1487		1646
1488	LOCK;	1647	LOCK;
1489	free_coro_mortal (aTHX);	1648	free_coro_mortal (aTHX);
1490	coro_mortal = prev_sv;	1649	coro_mortal = prev_sv;
1491	UNLOCK;	1650	UNLOCK;
1492	}	1651	}
1493		1652
1494	static void	1653	INLINE void
1495	prepare_cede (pTHX_ struct transfer_args *ta)	1654	prepare_cede (pTHX_ struct transfer_args *ta)
1496	{	1655	{
1497	api_ready (coro_current);	1656	api_ready (coro_current);
1498	prepare_schedule (aTHX_ ta);	1657	prepare_schedule (aTHX_ ta);
1499	}	1658	}
1500		1659
1501	static int	1660	static void
1502	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1661	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1503	{	1662	{
		1663	SV *prev = SvRV (coro_current);
		1664
1504	if (coro_nready)	1665	if (coro_nready)
1505	{	1666	{
1506	SV *prev = SvRV (coro_current);
1507	prepare_schedule (aTHX_ ta);	1667	prepare_schedule (aTHX_ ta);
1508	api_ready (prev);	1668	api_ready (prev);
		1669	}
		1670	else
		1671	ta->prev = ta->next = SvSTATE (prev);
		1672	}
		1673
		1674	static void
		1675	api_schedule (void)
		1676	{
		1677	dTHX;
		1678	struct transfer_args ta;
		1679
		1680	prepare_schedule (aTHX_ &ta);
		1681	TRANSFER (ta, 1);
		1682	}
		1683
		1684	static int
		1685	api_cede (void)
		1686	{
		1687	dTHX;
		1688	struct transfer_args ta;
		1689
		1690	prepare_cede (aTHX_ &ta);
		1691
		1692	if (expect_true (ta.prev != ta.next))
		1693	{
		1694	TRANSFER (ta, 1);
1509	return 1;	1695	return 1;
1510	}	1696	}
1511	else	1697	else
1512	return 0;	1698	return 0;
1513	}	1699	}
1514		1700
1515	static void
1516	api_schedule (void)
1517	{
1518	dTHX;
1519	struct transfer_args ta;
1520
1521	prepare_schedule (aTHX_ &ta);
1522	TRANSFER (ta, 1);
1523	}
1524
1525	static int	1701	static int
1526	api_cede (void)	1702	api_cede_notself (void)
1527	{	1703	{
		1704	if (coro_nready)
		1705	{
1528	dTHX;	1706	dTHX;
1529	struct transfer_args ta;	1707	struct transfer_args ta;
1530		1708
1531	prepare_cede (aTHX_ &ta);	1709	prepare_cede_notself (aTHX_ &ta);
1532
1533	if (expect_true (ta.prev != ta.next))
1534	{
1535	TRANSFER (ta, 1);	1710	TRANSFER (ta, 1);
1536	return 1;	1711	return 1;
1537	}	1712	}
1538	else	1713	else
1539	return 0;	1714	return 0;
1540	}	1715	}
1541		1716
1542	static int
1543	api_cede_notself (void)
1544	{
1545	dTHX;
1546	struct transfer_args ta;
1547
1548	if (prepare_cede_notself (aTHX_ &ta))
1549	{
1550	TRANSFER (ta, 1);
1551	return 1;
1552	}
1553	else
1554	return 0;
1555	}
1556
1557	static void	1717	static void
1558	api_trace (SV *coro_sv, int flags)	1718	api_trace (SV *coro_sv, int flags)
1559	{	1719	{
1560	dTHX;	1720	dTHX;
1561	struct coro *coro = SvSTATE (coro_sv);	1721	struct coro *coro = SvSTATE (coro_sv);
1562		1722
1563	if (flags & CC_TRACE)	1723	if (flags & CC_TRACE)
1564	{	1724	{
1565	if (!coro->cctx)	1725	if (!coro->cctx)
1566	coro->cctx = cctx_new ();	1726	coro->cctx = cctx_new_run ();
1567	else if (!(coro->cctx->flags & CC_TRACE))	1727	else if (!(coro->cctx->flags & CC_TRACE))
1568	croak ("cannot enable tracing on coroutine with custom stack");	1728	croak ("cannot enable tracing on coroutine with custom stack");
1569		1729
1570	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1730	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1571	}	1731	}
…		…
1578	else	1738	else
1579	coro->slot->runops = RUNOPS_DEFAULT;	1739	coro->slot->runops = RUNOPS_DEFAULT;
1580	}	1740	}
1581	}	1741	}
1582		1742
		1743	#if 0
		1744	static int
		1745	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1746	{
		1747	AV *padlist;
		1748	AV *av = (AV *)mg->mg_obj;
		1749
		1750	abort ();
		1751
		1752	return 0;
		1753	}
		1754
		1755	static MGVTBL coro_gensub_vtbl = {
		1756	0, 0, 0, 0,
		1757	coro_gensub_free
		1758	};
		1759	#endif
		1760
		1761	/*****************************************************************************/
		1762	/* PerlIO::cede */
		1763
		1764	typedef struct
		1765	{
		1766	PerlIOBuf base;
		1767	NV next, every;
		1768	} PerlIOCede;
		1769
		1770	static IV
		1771	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1772	{
		1773	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1774
		1775	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1776	self->next = nvtime () + self->every;
		1777
		1778	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1779	}
		1780
		1781	static SV *
		1782	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1783	{
		1784	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1785
		1786	return newSVnv (self->every);
		1787	}
		1788
		1789	static IV
		1790	PerlIOCede_flush (pTHX_ PerlIO *f)
		1791	{
		1792	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1793	double now = nvtime ();
		1794
		1795	if (now >= self->next)
		1796	{
		1797	api_cede ();
		1798	self->next = now + self->every;
		1799	}
		1800
		1801	return PerlIOBuf_flush (aTHX_ f);
		1802	}
		1803
		1804	static PerlIO_funcs PerlIO_cede =
		1805	{
		1806	sizeof(PerlIO_funcs),
		1807	"cede",
		1808	sizeof(PerlIOCede),
		1809	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1810	PerlIOCede_pushed,
		1811	PerlIOBuf_popped,
		1812	PerlIOBuf_open,
		1813	PerlIOBase_binmode,
		1814	PerlIOCede_getarg,
		1815	PerlIOBase_fileno,
		1816	PerlIOBuf_dup,
		1817	PerlIOBuf_read,
		1818	PerlIOBuf_unread,
		1819	PerlIOBuf_write,
		1820	PerlIOBuf_seek,
		1821	PerlIOBuf_tell,
		1822	PerlIOBuf_close,
		1823	PerlIOCede_flush,
		1824	PerlIOBuf_fill,
		1825	PerlIOBase_eof,
		1826	PerlIOBase_error,
		1827	PerlIOBase_clearerr,
		1828	PerlIOBase_setlinebuf,
		1829	PerlIOBuf_get_base,
		1830	PerlIOBuf_bufsiz,
		1831	PerlIOBuf_get_ptr,
		1832	PerlIOBuf_get_cnt,
		1833	PerlIOBuf_set_ptrcnt,
		1834	};
		1835
		1836	/*****************************************************************************/
		1837
		1838	static const CV *ssl_cv; /* for quick consistency check */
		1839
		1840	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
		1841	static SV *ssl_arg0;
		1842	static SV *ssl_arg1;
		1843
		1844	/* this restores the stack in the case we patched the entersub, to */
		1845	/* recreate the stack frame as perl will on following calls */
		1846	/* since entersub cleared the stack */
		1847	static OP *
		1848	pp_restore (pTHX)
		1849	{
		1850	dSP;
		1851
		1852	PUSHMARK (SP);
		1853
		1854	EXTEND (SP, 3);
		1855	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
		1856	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
		1857	PUSHs ((SV *)CvGV (ssl_cv));
		1858
		1859	RETURNOP (ssl_restore.op_first);
		1860	}
		1861
		1862	#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */
		1863
		1864	/* declare prototype */
		1865	XS(XS_Coro__State__set_stacklevel);
		1866
		1867	/*
		1868	* these not obviously related functions are all rolled into one
		1869	* function to increase chances that they all will call transfer with the same
		1870	* stack offset
		1871	*/
		1872	static OP *
		1873	pp_set_stacklevel (pTHX)
		1874	{
		1875	dSP;
		1876	struct transfer_args ta;
		1877	SV **arg = PL_stack_base + TOPMARK + 1;
		1878	int items = SP - arg; /* args without function object */
		1879
		1880	/* do a quick consistency check on the "function" object, and if it isn't */
		1881	/* for us, divert to the real entersub */
		1882	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1883	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1884
		1885	/* pop args */
		1886	SP = PL_stack_base + POPMARK;
		1887
		1888	if (!(PL_op->op_flags & OPf_STACKED))
		1889	{
		1890	/* ampersand-form of call, use @_ instead of stack */
		1891	AV *av = GvAV (PL_defgv);
		1892	arg = AvARRAY (av);
		1893	items = AvFILLp (av) + 1;
		1894	}
		1895
		1896	PUTBACK;
		1897	switch (PL_op->op_private & OPpENTERSUB_SSL)
		1898	{
		1899	case 0:
		1900	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1901	break;
		1902
		1903	case 1:
		1904	if (items != 2)
		1905	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1906
		1907	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1908	break;
		1909
		1910	case 2:
		1911	prepare_schedule (aTHX_ &ta);
		1912	break;
		1913
		1914	case 3:
		1915	prepare_cede (aTHX_ &ta);
		1916	break;
		1917
		1918	case 4:
		1919	prepare_cede_notself (aTHX_ &ta);
		1920	break;
		1921	}
		1922
		1923	TRANSFER (ta, 0);
		1924	SPAGAIN;
		1925
		1926	skip:
		1927	PUTBACK;
		1928	SSL_TAIL;
		1929	SPAGAIN;
		1930	RETURN;
		1931	}
		1932
		1933	static void
		1934	coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items)
		1935	{
		1936	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
		1937
		1938	assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
		1939	ssl_cv = cv;
		1940
		1941	/* we patch the op, and then re-run the whole call */
		1942	/* we have to put some dummy argument on the stack for this to work */
		1943	ssl_restore.op_next = (OP *)&ssl_restore;
		1944	ssl_restore.op_type = OP_NULL;
		1945	ssl_restore.op_ppaddr = pp_restore;
		1946	ssl_restore.op_first = PL_op;
		1947
		1948	ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1949	ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1950
		1951	PL_op->op_ppaddr = pp_set_stacklevel;
		1952	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
		1953
		1954	PL_op = (OP *)&ssl_restore;
		1955	}
		1956
1583	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1957	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1584		1958
1585	PROTOTYPES: DISABLE	1959	PROTOTYPES: DISABLE
1586		1960
1587	BOOT:	1961	BOOT:
1588	{	1962	{
1589	#ifdef USE_ITHREADS	1963	#ifdef USE_ITHREADS
1590	MUTEX_INIT (&coro_mutex);	1964	MUTEX_INIT (&coro_lock);
		1965	# if CORO_PTHREAD
		1966	coro_thx = PERL_GET_CONTEXT;
		1967	# endif
1591	#endif	1968	#endif
1592	BOOT_PAGESIZE;	1969	BOOT_PAGESIZE;
1593		1970
1594	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1971	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1595	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1972	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1596		1973
1597	orig_sigelem_get = PL_vtbl_sigelem.svt_get;	1974	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1598	PL_vtbl_sigelem.svt_get = coro_sigelem_get;	1975	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1599	orig_sigelem_set = PL_vtbl_sigelem.svt_set;	1976	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1600	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1601		1977
1602	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);	1978	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1603	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));	1979	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1604	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));	1980	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1605		1981
…		…
1614	main_top_env = PL_top_env;	1990	main_top_env = PL_top_env;
1615		1991
1616	while (main_top_env->je_prev)	1992	while (main_top_env->je_prev)
1617	main_top_env = main_top_env->je_prev;	1993	main_top_env = main_top_env->je_prev;
1618		1994
1619	coroapi.ver = CORO_API_VERSION;	1995	coroapi.ver = CORO_API_VERSION;
1620	coroapi.rev = CORO_API_REVISION;	1996	coroapi.rev = CORO_API_REVISION;
1621	coroapi.transfer = api_transfer;	1997	coroapi.transfer = api_transfer;
		1998
		1999	{
		2000	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		2001
		2002	if (!svp) croak ("Time::HiRes is required");
		2003	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		2004
		2005	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		2006	}
1622		2007
1623	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2008	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1624	}	2009	}
1625		2010
1626	SV *	2011	SV *
…		…
1650	av_push (coro->args, newSVsv (ST (i)));	2035	av_push (coro->args, newSVsv (ST (i)));
1651	}	2036	}
1652	OUTPUT:	2037	OUTPUT:
1653	RETVAL	2038	RETVAL
1654		2039
1655	# these not obviously related functions are all rolled into the same xs
1656	# function to increase chances that they all will call transfer with the same
1657	# stack offset
1658	void	2040	void
1659	_set_stacklevel (...)	2041	_set_stacklevel (...)
1660	ALIAS:	2042	ALIAS:
1661	Coro::State::transfer = 1	2043	Coro::State::transfer = 1
1662	Coro::schedule = 2	2044	Coro::schedule = 2
1663	Coro::cede = 3	2045	Coro::cede = 3
1664	Coro::cede_notself = 4	2046	Coro::cede_notself = 4
1665	CODE:	2047	CODE:
1666	{	2048	coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
1667	struct transfer_args ta;
1668
1669	PUTBACK;
1670	switch (ix)
1671	{
1672	case 0:
1673	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1674	ta.next = 0;
1675	break;
1676
1677	case 1:
1678	if (items != 2)
1679	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1680
1681	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1682	break;
1683
1684	case 2:
1685	prepare_schedule (aTHX_ &ta);
1686	break;
1687
1688	case 3:
1689	prepare_cede (aTHX_ &ta);
1690	break;
1691
1692	case 4:
1693	if (!prepare_cede_notself (aTHX_ &ta))
1694	XSRETURN_EMPTY;
1695
1696	break;
1697	}
1698	SPAGAIN;
1699
1700	BARRIER;
1701	PUTBACK;
1702	TRANSFER (ta, 0);
1703	SPAGAIN; /* might be the sp of a different coroutine now */
1704	/* be extra careful not to ever do anything after TRANSFER */
1705	}
1706		2049
1707	bool	2050	bool
1708	_destroy (SV *coro_sv)	2051	_destroy (SV *coro_sv)
1709	CODE:	2052	CODE:
1710	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2053	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1718	_exit (code);	2061	_exit (code);
1719		2062
1720	int	2063	int
1721	cctx_stacksize (int new_stacksize = 0)	2064	cctx_stacksize (int new_stacksize = 0)
1722	CODE:	2065	CODE:
1723	RETVAL = coro_stacksize;	2066	RETVAL = cctx_stacksize;
1724	if (new_stacksize)	2067	if (new_stacksize)
		2068	{
1725	coro_stacksize = new_stacksize;	2069	cctx_stacksize = new_stacksize;
		2070	++cctx_gen;
		2071	}
		2072	OUTPUT:
		2073	RETVAL
		2074
		2075	int
		2076	cctx_max_idle (int max_idle = 0)
		2077	CODE:
		2078	RETVAL = cctx_max_idle;
		2079	if (max_idle > 1)
		2080	cctx_max_idle = max_idle;
1726	OUTPUT:	2081	OUTPUT:
1727	RETVAL	2082	RETVAL
1728		2083
1729	int	2084	int
1730	cctx_count ()	2085	cctx_count ()
…		…
1754	call (Coro::State coro, SV *coderef)	2109	call (Coro::State coro, SV *coderef)
1755	ALIAS:	2110	ALIAS:
1756	eval = 1	2111	eval = 1
1757	CODE:	2112	CODE:
1758	{	2113	{
1759	if (coro->mainstack)	2114	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1760	{	2115	{
1761	struct coro temp;	2116	struct coro temp;
1762		2117
1763	if (!(coro->flags & CF_RUNNING))	2118	if (!(coro->flags & CF_RUNNING))
1764	{	2119	{
…		…
1808	RETVAL = boolSV (coro->flags & ix);	2163	RETVAL = boolSV (coro->flags & ix);
1809	OUTPUT:	2164	OUTPUT:
1810	RETVAL	2165	RETVAL
1811		2166
1812	void	2167	void
		2168	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2169	PROTOTYPE: $;$
		2170	CODE:
		2171	SvREFCNT_dec (self->throw);
		2172	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2173
		2174	void
1813	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2175	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1814		2176
1815	SV *	2177	SV *
1816	has_cctx (Coro::State coro)	2178	has_cctx (Coro::State coro)
1817	PROTOTYPE: $	2179	PROTOTYPE: $
…		…
1826	CODE:	2188	CODE:
1827	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2189	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1828	OUTPUT:	2190	OUTPUT:
1829	RETVAL	2191	RETVAL
1830		2192
1831	IV	2193	UV
1832	rss (Coro::State coro)	2194	rss (Coro::State coro)
1833	PROTOTYPE: $	2195	PROTOTYPE: $
1834	ALIAS:	2196	ALIAS:
1835	usecount = 1	2197	usecount = 1
1836	CODE:	2198	CODE:
…		…
1846	force_cctx ()	2208	force_cctx ()
1847	CODE:	2209	CODE:
1848	struct coro *coro = SvSTATE (coro_current);	2210	struct coro *coro = SvSTATE (coro_current);
1849	coro->cctx->idle_sp = 0;	2211	coro->cctx->idle_sp = 0;
1850		2212
1851	MODULE = Coro::State PACKAGE = Coro
1852
1853	BOOT:
1854	{
1855	int i;
1856
1857	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1858	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1859	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1860
1861	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1862	SvREADONLY_on (coro_current);
1863
1864	coro_stash = gv_stashpv ("Coro", TRUE);
1865
1866	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1867	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1868	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1869	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1870	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1871	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1872
1873	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1874	coro_ready[i] = newAV ();
1875
1876	{
1877	SV *sv = perl_get_sv ("Coro::API", TRUE);
1878	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1879
1880	coroapi.schedule = api_schedule;
1881	coroapi.cede = api_cede;
1882	coroapi.cede_notself = api_cede_notself;
1883	coroapi.ready = api_ready;
1884	coroapi.is_ready = api_is_ready;
1885	coroapi.nready = &coro_nready;
1886	coroapi.current = coro_current;
1887
1888	GCoroAPI = &coroapi;
1889	sv_setiv (sv, (IV)&coroapi);
1890	SvREADONLY_on (sv);
1891	}
1892	}
1893
1894	void
1895	_set_current (SV *current)
1896	PROTOTYPE: $
1897	CODE:
1898	SvREFCNT_dec (SvRV (coro_current));
1899	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1900
1901	void
1902	_set_readyhook (SV *hook)
1903	PROTOTYPE: $
1904	CODE:
1905	LOCK;
1906	if (coro_readyhook)
1907	SvREFCNT_dec (coro_readyhook);
1908	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1909	UNLOCK;
1910
1911	int
1912	prio (Coro::State coro, int newprio = 0)
1913	ALIAS:
1914	nice = 1
1915	CODE:
1916	{
1917	RETVAL = coro->prio;
1918
1919	if (items > 1)
1920	{
1921	if (ix)
1922	newprio = coro->prio - newprio;
1923
1924	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1925	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1926
1927	coro->prio = newprio;
1928	}
1929	}
1930	OUTPUT:
1931	RETVAL
1932
1933	SV *
1934	ready (SV *self)
1935	PROTOTYPE: $
1936	CODE:
1937	RETVAL = boolSV (api_ready (self));
1938	OUTPUT:
1939	RETVAL
1940
1941	int
1942	nready (...)
1943	PROTOTYPE:
1944	CODE:
1945	RETVAL = coro_nready;
1946	OUTPUT:
1947	RETVAL
1948
1949	void
1950	throw (Coro::State self, SV *throw = &PL_sv_undef)
1951	PROTOTYPE: $;$
1952	CODE:
1953	SvREFCNT_dec (self->throw);
1954	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1955
1956	void	2213	void
1957	swap_defsv (Coro::State self)	2214	swap_defsv (Coro::State self)
1958	PROTOTYPE: $	2215	PROTOTYPE: $
1959	ALIAS:	2216	ALIAS:
1960	swap_defav = 1	2217	swap_defav = 1
…		…
1967	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2224	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1968		2225
1969	SV *tmp = *src; *src = *dst; *dst = tmp;	2226	SV *tmp = *src; *src = *dst; *dst = tmp;
1970	}	2227	}
1971		2228
		2229	MODULE = Coro::State PACKAGE = Coro
		2230
		2231	BOOT:
		2232	{
		2233	int i;
		2234
		2235	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2236	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2237	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2238
		2239	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2240	SvREADONLY_on (coro_current);
		2241
		2242	coro_stash = gv_stashpv ("Coro", TRUE);
		2243
		2244	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		2245	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		2246	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		2247	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		2248	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		2249	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		2250
		2251	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		2252	coro_ready[i] = newAV ();
		2253
		2254	{
		2255	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
		2256
		2257	coroapi.schedule = api_schedule;
		2258	coroapi.cede = api_cede;
		2259	coroapi.cede_notself = api_cede_notself;
		2260	coroapi.ready = api_ready;
		2261	coroapi.is_ready = api_is_ready;
		2262	coroapi.nready = &coro_nready;
		2263	coroapi.current = coro_current;
		2264
		2265	GCoroAPI = &coroapi;
		2266	sv_setiv (sv, (IV)&coroapi);
		2267	SvREADONLY_on (sv);
		2268	}
		2269	}
		2270
		2271	void
		2272	_set_current (SV *current)
		2273	PROTOTYPE: $
		2274	CODE:
		2275	SvREFCNT_dec (SvRV (coro_current));
		2276	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2277
		2278	void
		2279	_set_readyhook (SV *hook)
		2280	PROTOTYPE: $
		2281	CODE:
		2282	LOCK;
		2283	SvREFCNT_dec (coro_readyhook);
		2284	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2285	UNLOCK;
		2286
		2287	int
		2288	prio (Coro::State coro, int newprio = 0)
		2289	ALIAS:
		2290	nice = 1
		2291	CODE:
		2292	{
		2293	RETVAL = coro->prio;
		2294
		2295	if (items > 1)
		2296	{
		2297	if (ix)
		2298	newprio = coro->prio - newprio;
		2299
		2300	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		2301	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		2302
		2303	coro->prio = newprio;
		2304	}
		2305	}
		2306	OUTPUT:
		2307	RETVAL
		2308
		2309	SV *
		2310	ready (SV *self)
		2311	PROTOTYPE: $
		2312	CODE:
		2313	RETVAL = boolSV (api_ready (self));
		2314	OUTPUT:
		2315	RETVAL
		2316
		2317	int
		2318	nready (...)
		2319	PROTOTYPE:
		2320	CODE:
		2321	RETVAL = coro_nready;
		2322	OUTPUT:
		2323	RETVAL
		2324
1972	# for async_pool speedup	2325	# for async_pool speedup
1973	void	2326	void
1974	_pool_1 (SV *cb)	2327	_pool_1 (SV *cb)
1975	CODE:	2328	CODE:
1976	{	2329	{
…		…
1981	AV *invoke_av;	2334	AV *invoke_av;
1982	int i, len;	2335	int i, len;
1983		2336
1984	if (!invoke)	2337	if (!invoke)
1985	{	2338	{
1986	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2339	SV *old = PL_diehook;
		2340	PL_diehook = 0;
		2341	SvREFCNT_dec (old);
1987	croak ("\3async_pool terminate\2\n");	2342	croak ("\3async_pool terminate\2\n");
1988	}	2343	}
1989		2344
1990	SvREFCNT_dec (coro->saved_deffh);	2345	SvREFCNT_dec (coro->saved_deffh);
1991	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2346	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1992		2347
1993	hv_store (hv, "desc", sizeof ("desc") - 1,	2348	hv_store (hv, "desc", sizeof ("desc") - 1,
1994	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2349	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1995		2350
1996	invoke_av = (AV *)SvRV (invoke);	2351	invoke_av = (AV *)SvRV (invoke);
…		…
2000		2355
2001	if (len > 0)	2356	if (len > 0)
2002	{	2357	{
2003	av_fill (defav, len - 1);	2358	av_fill (defav, len - 1);
2004	for (i = 0; i < len; ++i)	2359	for (i = 0; i < len; ++i)
2005	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2360	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2006	}	2361	}
2007		2362
2008	SvREFCNT_dec (invoke);	2363	SvREFCNT_dec (invoke);
2009	}	2364	}
2010		2365
…		…
2017	sv_setsv (cb, &PL_sv_undef);	2372	sv_setsv (cb, &PL_sv_undef);
2018		2373
2019	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2374	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2020	coro->saved_deffh = 0;	2375	coro->saved_deffh = 0;
2021		2376
2022	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2377	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2023	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2378	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2024	{	2379	{
2025	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2380	SV *old = PL_diehook;
		2381	PL_diehook = 0;
		2382	SvREFCNT_dec (old);
2026	croak ("\3async_pool terminate\2\n");	2383	croak ("\3async_pool terminate\2\n");
2027	}	2384	}
2028		2385
2029	av_clear (GvAV (PL_defgv));	2386	av_clear (GvAV (PL_defgv));
2030	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2387	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
2036	api_trace (coro_current, 0);	2393	api_trace (coro_current, 0);
2037		2394
2038	av_push (av_async_pool, newSVsv (coro_current));	2395	av_push (av_async_pool, newSVsv (coro_current));
2039	}	2396	}
2040		2397
		2398	#if 0
		2399
		2400	void
		2401	_generator_call (...)
		2402	PROTOTYPE: @
		2403	PPCODE:
		2404	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2405	xxxx
		2406	abort ();
		2407
		2408	SV *
		2409	gensub (SV *sub, ...)
		2410	PROTOTYPE: &;@
		2411	CODE:
		2412	{
		2413	struct coro *coro;
		2414	MAGIC *mg;
		2415	CV *xcv;
		2416	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2417	int i;
		2418
		2419	CvGV (ncv) = CvGV (cv);
		2420	CvFILE (ncv) = CvFILE (cv);
		2421
		2422	Newz (0, coro, 1, struct coro);
		2423	coro->args = newAV ();
		2424	coro->flags = CF_NEW;
		2425
		2426	av_extend (coro->args, items - 1);
		2427	for (i = 1; i < items; i++)
		2428	av_push (coro->args, newSVsv (ST (i)));
		2429
		2430	CvISXSUB_on (ncv);
		2431	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2432
		2433	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2434
		2435	CvXSUB (ncv) = CvXSUB (xcv);
		2436	CvANON_on (ncv);
		2437
		2438	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2439	RETVAL = newRV_noinc ((SV *)ncv);
		2440	}
		2441	OUTPUT:
		2442	RETVAL
		2443
		2444	#endif
		2445
2041		2446
2042	MODULE = Coro::State PACKAGE = Coro::AIO	2447	MODULE = Coro::State PACKAGE = Coro::AIO
2043		2448
2044	SV *	2449	void
2045	_get_state ()	2450	_get_state (SV *self)
2046	CODE:	2451	PPCODE:
2047	{	2452	{
2048	struct io_state *data;	2453	AV *defav = GvAV (PL_defgv);
2049		2454	AV *av = newAV ();
		2455	int i;
2050	RETVAL = newSV (sizeof (struct io_state));	2456	SV *data_sv = newSV (sizeof (struct io_state));
2051	data = (struct io_state *)SvPVX (RETVAL);	2457	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2052	SvCUR_set (RETVAL, sizeof (struct io_state));	2458	SvCUR_set (data_sv, sizeof (struct io_state));
2053	SvPOK_only (RETVAL);	2459	SvPOK_only (data_sv);
2054		2460
2055	data->errorno = errno;	2461	data->errorno = errno;
2056	data->laststype = PL_laststype;	2462	data->laststype = PL_laststype;
2057	data->laststatval = PL_laststatval;	2463	data->laststatval = PL_laststatval;
2058	data->statcache = PL_statcache;	2464	data->statcache = PL_statcache;
		2465
		2466	av_extend (av, AvFILLp (defav) + 1 + 1);
		2467
		2468	for (i = 0; i <= AvFILLp (defav); ++i)
		2469	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2470
		2471	av_push (av, data_sv);
		2472
		2473	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2474
		2475	api_ready (self);
2059	}	2476	}
2060	OUTPUT:
2061	RETVAL
2062		2477
2063	void	2478	void
2064	_set_state (char *data_)	2479	_set_state (SV *state)
2065	PROTOTYPE: $	2480	PROTOTYPE: $
2066	CODE:	2481	PPCODE:
2067	{	2482	{
2068	struct io_state *data = (void *)data_;	2483	AV *av = (AV *)SvRV (state);
		2484	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2485	int i;
2069		2486
2070	errno = data->errorno;	2487	errno = data->errorno;
2071	PL_laststype = data->laststype;	2488	PL_laststype = data->laststype;
2072	PL_laststatval = data->laststatval;	2489	PL_laststatval = data->laststatval;
2073	PL_statcache = data->statcache;	2490	PL_statcache = data->statcache;
		2491
		2492	EXTEND (SP, AvFILLp (av));
		2493	for (i = 0; i < AvFILLp (av); ++i)
		2494	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2074	}	2495	}
2075		2496
2076		2497
2077	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2498	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2078		2499
2079	BOOT:	2500	BOOT:
2080	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2501	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2081		2502
2082	SV *	2503	SV *
2083	_schedule ()	2504	_schedule (...)
2084	PROTOTYPE: @	2505	PROTOTYPE: @
2085	CODE:	2506	CODE:
2086	{	2507	{
2087	static int incede;	2508	static int incede;
2088		2509
…		…
2102	}	2523	}
2103		2524
2104	--incede;	2525	--incede;
2105	}	2526	}
2106		2527
		2528
		2529	MODULE = Coro::State PACKAGE = PerlIO::cede
		2530
		2531	BOOT:
		2532	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2533

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