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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.240 by root, Sun Jun 29 00:28:17 2008 UTC vs.
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
…		…
45	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
46	#endif	47	#endif
47		48
48	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
49	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51	#else
52	# define REGISTER_STACK(cctx,start,end)
53	#endif	51	#endif
54		52
55	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
56	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
57		55
58	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
59	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
60	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
61	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
80	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
81	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
82	# endif	80	# endif
83	#endif	81	#endif
84		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
85	/* 5.8.8 */	93	/* 5.8.8 */
86	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
87	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
88	#endif	96	#endif
89	#ifndef newSV	97	#ifndef newSV
90	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
91	#endif
92
93	/* 5.11 */
94	#ifndef CxHASARGS
95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96	#endif	99	#endif
97		100
98	/* 5.8.7 */	101	/* 5.8.7 */
99	#ifndef SvRV_set	102	#ifndef SvRV_set
100	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
…		…
120		123
121	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
122		125
123	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
124	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
127	#else	130	#else
128	# define attribute(x)	131	# define attribute(x)
129	# define BARRIER
130	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
131	#endif	134	#endif
132		135
133	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
134	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
135		138
136	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
137		140
138	#include "CoroAPI.h"	141	#include "CoroAPI.h"
139		142
140	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
141	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	147	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		148	# if CORO_PTHREAD
		149	static void *coro_thx;
		150	# endif
		151
144	#else	152	#else
		153
145	# define LOCK (void)0	154	# define LOCK (void)0
146	# define UNLOCK (void)0	155	# define UNLOCK (void)0
		156
147	#endif	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
148		163
149	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
150	struct io_state	165	struct io_state
151	{	166	{
		167	AV *res;
152	int errorno;	168	int errorno;
153	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
154	int laststatval;	170	int laststatval;
155	Stat_t statcache;	171	Stat_t statcache;
156	};	172	};
157		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
158	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed after next transfer */	182	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		183	static volatile struct coro *transfer_next;
		184
		185	struct transfer_args
		186	{
		187	struct coro *prev, *next;
		188	};
164		189
165	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	192	static SV *rv_diehook;
168	static SV *rv_warnhook;	193	static SV *rv_warnhook;
…		…
200	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	226	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202	JMPENV *top_env;	227	JMPENV *top_env;
203	coro_context cctx;	228	coro_context cctx;
204		229
		230	U32 gen;
205	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
206	int valgrind_id;	232	int valgrind_id;
207	#endif	233	#endif
208	unsigned char flags;	234	unsigned char flags;
209	} coro_cctx;	235	} coro_cctx;
…		…
269	#define PRIO_MIN -4	295	#define PRIO_MIN -4
270		296
271	/* for Coro.pm */	297	/* for Coro.pm */
272	static SV *coro_current;	298	static SV *coro_current;
273	static SV *coro_readyhook;	299	static SV *coro_readyhook;
274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275	static int coro_nready;	301	static int coro_nready;
276	static struct coro *coro_first;	302	static struct coro *coro_first;
277		303
278	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
279		305
…		…
321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322	#endif	348	#endif
323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324	--AvFILLp (padlist);	350	--AvFILLp (padlist);
325		351
326	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
328		354
329	return newpadlist;	355	return newpadlist;
330	}	356	}
331		357
…		…
361		387
362	/* casting is fun. */	388	/* casting is fun. */
363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
365		391
		392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		393
366	return 0;	394	return 0;
367	}	395	}
368		396
369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370	#define CORO_MAGIC_type_state PERL_MAGIC_ext	398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
372	static MGVTBL coro_cv_vtbl = {	400	static MGVTBL coro_cv_vtbl = {
373	0, 0, 0, 0,	401	0, 0, 0, 0,
374	coro_cv_free	402	coro_cv_free
375	};	403	};
376		404
377	#define CORO_MAGIC(sv,type) \	405	#define CORO_MAGIC(sv, type) \
378	SvMAGIC (sv) \	406	SvMAGIC (sv) \
379	? SvMAGIC (sv)->mg_type == type \	407	? SvMAGIC (sv)->mg_type == type \
380	? SvMAGIC (sv) \	408	? SvMAGIC (sv) \
381	: mg_find (sv, type) \	409	: mg_find (sv, type) \
382	: 0	410	: 0
383		411
384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	412	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	413	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386		414
387	static struct coro *	415	INLINE struct coro *
388	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
389	{	417	{
390	HV *stash;	418	HV *stash;
391	MAGIC *mg;	419	MAGIC *mg;
392		420
…		…
420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422	else	450	else
423	{	451	{
424	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
425	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
426	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
427	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
428	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
429	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
430	#else	459	#else
…		…
616		645
617	/*	646	/*
618	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
619	*/	648	*/
620	static void	649	static void
621	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
622	{	651	{
623	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
624	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
625		654
626	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
663	#undef VAR	692	#undef VAR
664	}	693	}
665	else	694	else
666	slot = coro->slot;	695	slot = coro->slot;
667		696
		697	if (slot)
		698	{
668	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	701	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
674	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
675		706
676	#if !PERL_VERSION_ATLEAST (5,10,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
677	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
678	#endif	709	#endif
		710	}
679	}	711	}
680		712
681	return rss;	713	return rss;
		714	}
		715
		716	/** set stacklevel support **************************************************/
		717
		718	/* we sometimes need to create the effect of pp_set_stacklevel calling us */
		719	#define SSL_HEAD (void)0
		720	/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
		721	#define SSL_TAIL set_stacklevel_tail (aTHX)
		722
		723	INLINE void
		724	set_stacklevel_tail (pTHX)
		725	{
		726	dSP;
		727	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);
688	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);	747	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
689		748
690	/* apparently < 5.8.8 */	749	/* apparently < 5.8.8 */
691	#undef MgPV_nolen_const
692	#ifndef MgPV_nolen_const	750	#ifndef MgPV_nolen_const
693	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \	751	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
694	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \	752	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
695	(const char*)(mg)->mg_ptr)	753	(const char*)(mg)->mg_ptr)
696	#endif	754	#endif
697		755
698	/*	756	/*
699	* This overrides the default magic get method of %SIG elements.	757	* This overrides the default magic get method of %SIG elements.
…		…
802	GvSV (PL_defgv) = newSV (0);	860	GvSV (PL_defgv) = newSV (0);
803	GvAV (PL_defgv) = coro->args; coro->args = 0;	861	GvAV (PL_defgv) = coro->args; coro->args = 0;
804	GvSV (PL_errgv) = newSV (0);	862	GvSV (PL_errgv) = newSV (0);
805	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);
806	PL_rs = newSVsv (GvSV (irsgv));	864	PL_rs = newSVsv (GvSV (irsgv));
807	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	865	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
808		866
809	{	867	{
810	dSP;	868	dSP;
811	LOGOP myop;	869	UNOP myop;
812		870
813	Zero (&myop, 1, LOGOP);	871	Zero (&myop, 1, UNOP);
814	myop.op_next = Nullop;	872	myop.op_next = Nullop;
815	myop.op_flags = OPf_WANT_VOID;	873	myop.op_flags = OPf_WANT_VOID;
816		874
817	PUSHMARK (SP);	875	PUSHMARK (SP);
818	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	876	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
821	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	879	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
822	SPAGAIN;	880	SPAGAIN;
823	}	881	}
824		882
825	/* 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
826	* likely was suspended in set_stacklevel, called from entersub.	884	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
827	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	885	* so we have to emulate entering pp_set_stacklevel here.
828	* so we ENTER here for symmetry
829	*/	886	*/
830	ENTER;	887	SSL_HEAD;
831	}	888	}
832		889
833	static void	890	static void
834	coro_destroy (pTHX_ struct coro *coro)	891	coro_destruct (pTHX_ struct coro *coro)
835	{	892	{
836	if (!IN_DESTRUCT)	893	if (!IN_DESTRUCT)
837	{	894	{
838	/* restore all saved variables and stuff */	895	/* restore all saved variables and stuff */
839	LEAVE_SCOPE (0);	896	LEAVE_SCOPE (0);
…		…
861	SvREFCNT_dec (PL_warnhook);	918	SvREFCNT_dec (PL_warnhook);
862		919
863	SvREFCNT_dec (coro->saved_deffh);	920	SvREFCNT_dec (coro->saved_deffh);
864	SvREFCNT_dec (coro->throw);	921	SvREFCNT_dec (coro->throw);
865		922
866	coro_destroy_stacks (aTHX);	923	coro_destruct_stacks (aTHX);
867	}	924	}
868		925
869	static void	926	INLINE void
870	free_coro_mortal (pTHX)	927	free_coro_mortal (pTHX)
871	{	928	{
872	if (expect_true (coro_mortal))	929	if (expect_true (coro_mortal))
873	{	930	{
874	SvREFCNT_dec (coro_mortal);	931	SvREFCNT_dec (coro_mortal);
…		…
908	: cx->blk_gimme == G_SCALAR ? bot + 1	965	: cx->blk_gimme == G_SCALAR ? bot + 1
909	: bot;	966	: bot;
910		967
911	av_extend (av, top - bot);	968	av_extend (av, top - bot);
912	while (bot < top)	969	while (bot < top)
913	av_push (av, SvREFCNT_inc (*bot++));	970	av_push (av, SvREFCNT_inc_NN (*bot++));
914		971
915	PL_runops = RUNOPS_DEFAULT;	972	PL_runops = RUNOPS_DEFAULT;
916	ENTER;	973	ENTER;
917	SAVETMPS;	974	SAVETMPS;
918	EXTEND (SP, 3);	975	EXTEND (SP, 3);
…		…
998		1055
999	TAINT_NOT;	1056	TAINT_NOT;
1000	return 0;	1057	return 0;
1001	}	1058	}
1002		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
1003	/* 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 */
1004	/* _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 */
1005	/* during execution of a perl program */	1069	/* during execution of a perl program */
		1070	/* also initialises PL_top_env */
1006	static void NOINLINE	1071	static void NOINLINE
1007	cctx_prepare (pTHX_ coro_cctx *cctx)	1072	cctx_prepare (pTHX_ coro_cctx *cctx)
1008	{	1073	{
1009	dSP;	1074	dSP;
1010	LOGOP myop;	1075	UNOP myop;
1011		1076
1012	PL_top_env = &PL_start_env;	1077	PL_top_env = &PL_start_env;
1013		1078
1014	if (cctx->flags & CC_TRACE)	1079	if (cctx->flags & CC_TRACE)
1015	PL_runops = runops_trace;	1080	PL_runops = runops_trace;
1016		1081
1017	Zero (&myop, 1, LOGOP);	1082	Zero (&myop, 1, UNOP);
1018	myop.op_next = PL_op;	1083	myop.op_next = PL_op;
1019	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1084	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1020		1085
1021	PUSHMARK (SP);	1086	PUSHMARK (SP);
1022	EXTEND (SP, 2);	1087	EXTEND (SP, 2);
1023	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1088	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1024	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1089	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1025	PUTBACK;	1090	PUTBACK;
1026	PL_op = (OP *)&myop;	1091	PL_op = (OP *)&myop;
1027	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1092	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1028	SPAGAIN;	1093	SPAGAIN;
1029	}	1094	}
1030		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
1031	/*	1117	/*
1032	* this is a _very_ stripped down perl interpreter ;)	1118	* this is a _very_ stripped down perl interpreter ;)
1033	*/	1119	*/
1034	static void	1120	static void
1035	cctx_run (void *arg)	1121	cctx_run (void *arg)
1036	{	1122	{
		1123	#ifdef USE_ITHREADS
		1124	# if CORO_PTHREAD
		1125	PERL_SET_CONTEXT (coro_thx);
		1126	# endif
		1127	#endif
		1128	{
1037	dTHX;	1129	dTHX;
1038		1130
1039	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1131	/* we are the alternative tail to pp_set_stacklevel */
1040	UNLOCK;	1132	/* so do the same things here */
		1133	SSL_TAIL;
1041		1134
1042	/* we now skip the entersub that lead to transfer() */	1135	/* we now skip the op that did lead to transfer() */
1043	PL_op = PL_op->op_next;	1136	PL_op = PL_op->op_next;
1044		1137
1045	/* inject a fake subroutine call to cctx_init */	1138	/* inject a fake subroutine call to cctx_init */
1046	cctx_prepare (aTHX_ (coro_cctx *)arg);	1139	cctx_prepare (aTHX_ (coro_cctx *)arg);
1047		1140
		1141	/* cctx_run is the alternative tail of transfer() */
		1142	transfer_tail (aTHX);
		1143
1048	/* 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 */
1049	PL_restartop = PL_op;	1145	PL_restartop = PL_op;
1050	perl_run (PL_curinterp);	1146	perl_run (PL_curinterp);
1051		1147
1052	/*	1148	/*
1053	* 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
1054	* 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)
1055	* 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
1056	* bootstrap-time "top" top_env, as we cannot restore the "main"	1152	* bootstrap-time "top" top_env, as we cannot restore the "main"
1057	* coroutine as Coro has no such concept	1153	* coroutine as Coro has no such concept
1058	*/	1154	*/
1059	PL_top_env = main_top_env;	1155	PL_top_env = main_top_env;
1060	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	}
1061	}	1158	}
1062		1159
1063	static coro_cctx *	1160	static coro_cctx *
1064	cctx_new ()	1161	cctx_new ()
1065	{	1162	{
1066	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 ();
1067	void *stack_start;	1192	void *stack_start;
1068	size_t stack_size;	1193	size_t stack_size;
1069		1194
1070	++cctx_count;
1071
1072	Newz (0, cctx, 1, coro_cctx);
1073
1074	#if HAVE_MMAP	1195	#if HAVE_MMAP
1075	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;
1076	/* mmap supposedly does allocate-on-write for us */	1197	/* mmap supposedly does allocate-on-write for us */
1077	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1198	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1078		1199
1079	if (cctx->sptr != (void *)-1)	1200	if (cctx->sptr != (void *)-1)
1080	{	1201	{
1081	# if CORO_STACKGUARD	1202	#if CORO_STACKGUARD
1082	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1203	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1083	# endif	1204	#endif
1084	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1205	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1085	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1206	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1086	cctx->flags |= CC_MAPPED;	1207	cctx->flags |= CC_MAPPED;
1087	}	1208	}
1088	else	1209	else
1089	#endif	1210	#endif
1090	{	1211	{
1091	cctx->ssize = coro_stacksize * (long)sizeof (long);	1212	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1092	New (0, cctx->sptr, coro_stacksize, long);	1213	New (0, cctx->sptr, cctx_stacksize, long);
1093		1214
1094	if (!cctx->sptr)	1215	if (!cctx->sptr)
1095	{	1216	{
1096	perror ("FATAL: unable to allocate stack for coroutine");	1217	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1097	_exit (EXIT_FAILURE);	1218	_exit (EXIT_FAILURE);
1098	}	1219	}
1099		1220
1100	stack_start = cctx->sptr;	1221	stack_start = cctx->sptr;
1101	stack_size = cctx->ssize;	1222	stack_size = cctx->ssize;
1102	}	1223	}
1103		1224
1104	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
1105	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);
1106		1230
1107	return cctx;	1231	return cctx;
1108	}	1232	}
1109		1233
…		…
1112	{	1236	{
1113	if (!cctx)	1237	if (!cctx)
1114	return;	1238	return;
1115		1239
1116	--cctx_count;	1240	--cctx_count;
		1241	coro_destroy (&cctx->cctx);
1117		1242
		1243	/* coro_transfer creates new, empty cctx's */
		1244	if (cctx->sptr)
		1245	{
1118	#if CORO_USE_VALGRIND	1246	#if CORO_USE_VALGRIND
1119	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1247	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1120	#endif	1248	#endif
1121		1249
1122	#if HAVE_MMAP	1250	#if HAVE_MMAP
1123	if (cctx->flags & CC_MAPPED)	1251	if (cctx->flags & CC_MAPPED)
1124	munmap (cctx->sptr, cctx->ssize);	1252	munmap (cctx->sptr, cctx->ssize);
1125	else	1253	else
1126	#endif	1254	#endif
1127	Safefree (cctx->sptr);	1255	Safefree (cctx->sptr);
		1256	}
1128		1257
1129	Safefree (cctx);	1258	Safefree (cctx);
1130	}	1259	}
1131		1260
1132	/* wether this cctx should be destructed */	1261	/* wether this cctx should be destructed */
1133	#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))
1134		1263
1135	static coro_cctx *	1264	static coro_cctx *
1136	cctx_get (pTHX)	1265	cctx_get (pTHX)
1137	{	1266	{
1138	while (expect_true (cctx_first))	1267	while (expect_true (cctx_first))
…		…
1145	return cctx;	1274	return cctx;
1146		1275
1147	cctx_destroy (cctx);	1276	cctx_destroy (cctx);
1148	}	1277	}
1149		1278
1150	return cctx_new ();	1279	return cctx_new_run ();
1151	}	1280	}
1152		1281
1153	static void	1282	static void
1154	cctx_put (coro_cctx *cctx)	1283	cctx_put (coro_cctx *cctx)
1155	{	1284	{
		1285	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1286
1156	/* free another cctx if overlimit */	1287	/* free another cctx if overlimit */
1157	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1288	if (expect_false (cctx_idle >= cctx_max_idle))
1158	{	1289	{
1159	coro_cctx *first = cctx_first;	1290	coro_cctx *first = cctx_first;
1160	cctx_first = first->next;	1291	cctx_first = first->next;
1161	--cctx_idle;	1292	--cctx_idle;
1162		1293
…		…
1194	/* always use the TRANSFER macro */	1325	/* always use the TRANSFER macro */
1195	static void NOINLINE	1326	static void NOINLINE
1196	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1327	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1197	{	1328	{
1198	dSTACKLEVEL;	1329	dSTACKLEVEL;
1199	static volatile int has_throw;
1200		1330
1201	/* sometimes transfer is only called to set idle_sp */	1331	/* sometimes transfer is only called to set idle_sp */
1202	if (expect_false (!next))	1332	if (expect_false (!next))
1203	{	1333	{
1204	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1334	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1208	{	1338	{
1209	coro_cctx *prev__cctx;	1339	coro_cctx *prev__cctx;
1210		1340
1211	if (expect_false (prev->flags & CF_NEW))	1341	if (expect_false (prev->flags & CF_NEW))
1212	{	1342	{
1213	/* create a new empty context */	1343	/* create a new empty/source context */
1214	Newz (0, prev->cctx, 1, coro_cctx);	1344	prev->cctx = cctx_new_empty ();
1215	prev->flags &= ~CF_NEW;	1345	prev->flags &= ~CF_NEW;
1216	prev->flags |= CF_RUNNING;	1346	prev->flags |= CF_RUNNING;
1217	}	1347	}
1218		1348
1219	prev->flags &= ~CF_RUNNING;	1349	prev->flags &= ~CF_RUNNING;
…		…
1234	else	1364	else
1235	load_perl (aTHX_ next);	1365	load_perl (aTHX_ next);
1236		1366
1237	prev__cctx = prev->cctx;	1367	prev__cctx = prev->cctx;
1238		1368
1239	/* possibly "free" the cctx */	1369	/* possibly untie and reuse the cctx */
1240	if (expect_true (	1370	if (expect_true (
1241	prev__cctx->idle_sp == STACKLEVEL	1371	prev__cctx->idle_sp == STACKLEVEL
1242	&& !(prev__cctx->flags & CC_TRACE)	1372	&& !(prev__cctx->flags & CC_TRACE)
1243	&& !force_cctx	1373	&& !force_cctx
1244	))	1374	))
1245	{	1375	{
1246	/* 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 */
1247	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));
1248		1378
1249	prev->cctx = 0;	1379	prev->cctx = 0;
1250		1380
1251	/* 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 */
1252	/* 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 */
…		…
1260	++next->usecount;	1390	++next->usecount;
1261		1391
1262	if (expect_true (!next->cctx))	1392	if (expect_true (!next->cctx))
1263	next->cctx = cctx_get (aTHX);	1393	next->cctx = cctx_get (aTHX);
1264		1394
1265	has_throw = !!next->throw;	1395	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1396	transfer_next = next;
1266		1397
1267	if (expect_false (prev__cctx != next->cctx))	1398	if (expect_false (prev__cctx != next->cctx))
1268	{	1399	{
1269	prev__cctx->top_env = PL_top_env;	1400	prev__cctx->top_env = PL_top_env;
1270	PL_top_env = next->cctx->top_env;	1401	PL_top_env = next->cctx->top_env;
1271	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1402	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1272	}	1403	}
1273		1404
1274	free_coro_mortal (aTHX);	1405	transfer_tail (aTHX);
1275	UNLOCK;
1276
1277	if (expect_false (has_throw))
1278	{
1279	struct coro *coro = SvSTATE (coro_current);
1280
1281	if (coro->throw)
1282	{
1283	SV *exception = coro->throw;
1284	coro->throw = 0;
1285	sv_setsv (ERRSV, exception);
1286	croak (0);
1287	}
1288	}
1289	}	1406	}
1290	}	1407	}
1291
1292	struct transfer_args
1293	{
1294	struct coro *prev, *next;
1295	};
1296		1408
1297	#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))
1298	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1410	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1299		1411
1300	/** high level stuff ********************************************************/	1412	/** high level stuff ********************************************************/
…		…
1326	croak ("FATAL: tried to destroy currently running coroutine");	1438	croak ("FATAL: tried to destroy currently running coroutine");
1327		1439
1328	save_perl (aTHX_ &temp);	1440	save_perl (aTHX_ &temp);
1329	load_perl (aTHX_ coro);	1441	load_perl (aTHX_ coro);
1330		1442
1331	coro_destroy (aTHX_ coro);	1443	coro_destruct (aTHX_ coro);
1332		1444
1333	load_perl (aTHX_ &temp);	1445	load_perl (aTHX_ &temp);
1334		1446
1335	coro->slot = 0;	1447	coro->slot = 0;
1336	}	1448	}
…		…
1442	LOCK;	1554	LOCK;
1443		1555
1444	sv_hook = coro_nready ? 0 : coro_readyhook;	1556	sv_hook = coro_nready ? 0 : coro_readyhook;
1445	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1557	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1446		1558
1447	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1559	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1448	++coro_nready;	1560	++coro_nready;
1449		1561
1450	UNLOCK;	1562	UNLOCK;
1451		1563
1452	if (sv_hook)	1564	if (sv_hook)
…		…
1473		1585
1474	static int	1586	static int
1475	api_is_ready (SV *coro_sv)	1587	api_is_ready (SV *coro_sv)
1476	{	1588	{
1477	dTHX;	1589	dTHX;
		1590
1478	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1591	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1479	}	1592	}
1480		1593
1481	static void	1594	INLINE void
1482	prepare_schedule (pTHX_ struct transfer_args *ta)	1595	prepare_schedule (pTHX_ struct transfer_args *ta)
1483	{	1596	{
1484	SV *prev_sv, *next_sv;	1597	SV *prev_sv, *next_sv;
1485		1598
1486	for (;;)	1599	for (;;)
…		…
1512	/* cannot transfer to destroyed coros, skip and look for next */	1625	/* cannot transfer to destroyed coros, skip and look for next */
1513	if (expect_false (ta->next->flags & CF_DESTROYED))	1626	if (expect_false (ta->next->flags & CF_DESTROYED))
1514	{	1627	{
1515	UNLOCK;	1628	UNLOCK;
1516	SvREFCNT_dec (next_sv);	1629	SvREFCNT_dec (next_sv);
1517	/* coro_nready is already taken care of by destroy */	1630	/* coro_nready has already been taken care of by destroy */
1518	continue;	1631	continue;
1519	}	1632	}
1520		1633
1521	--coro_nready;	1634	--coro_nready;
1522	UNLOCK;	1635	UNLOCK;
…		…
1525		1638
1526	/* free this only after the transfer */	1639	/* free this only after the transfer */
1527	prev_sv = SvRV (coro_current);	1640	prev_sv = SvRV (coro_current);
1528	ta->prev = SvSTATE (prev_sv);	1641	ta->prev = SvSTATE (prev_sv);
1529	TRANSFER_CHECK (*ta);	1642	TRANSFER_CHECK (*ta);
1530	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));
1531	ta->next->flags &= ~CF_READY;	1644	ta->next->flags &= ~CF_READY;
1532	SvRV_set (coro_current, next_sv);	1645	SvRV_set (coro_current, next_sv);
1533		1646
1534	LOCK;	1647	LOCK;
1535	free_coro_mortal (aTHX);	1648	free_coro_mortal (aTHX);
1536	coro_mortal = prev_sv;	1649	coro_mortal = prev_sv;
1537	UNLOCK;	1650	UNLOCK;
1538	}	1651	}
1539		1652
1540	static void	1653	INLINE void
1541	prepare_cede (pTHX_ struct transfer_args *ta)	1654	prepare_cede (pTHX_ struct transfer_args *ta)
1542	{	1655	{
1543	api_ready (coro_current);	1656	api_ready (coro_current);
1544	prepare_schedule (aTHX_ ta);	1657	prepare_schedule (aTHX_ ta);
1545	}	1658	}
…		…
1607	struct coro *coro = SvSTATE (coro_sv);	1720	struct coro *coro = SvSTATE (coro_sv);
1608		1721
1609	if (flags & CC_TRACE)	1722	if (flags & CC_TRACE)
1610	{	1723	{
1611	if (!coro->cctx)	1724	if (!coro->cctx)
1612	coro->cctx = cctx_new ();	1725	coro->cctx = cctx_new_run ();
1613	else if (!(coro->cctx->flags & CC_TRACE))	1726	else if (!(coro->cctx->flags & CC_TRACE))
1614	croak ("cannot enable tracing on coroutine with custom stack");	1727	croak ("cannot enable tracing on coroutine with custom stack");
1615		1728
1616	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1729	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1617	}	1730	}
…		…
1624	else	1737	else
1625	coro->slot->runops = RUNOPS_DEFAULT;	1738	coro->slot->runops = RUNOPS_DEFAULT;
1626	}	1739	}
1627	}	1740	}
1628		1741
		1742	#if 0
		1743	static int
		1744	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1745	{
		1746	AV *padlist;
		1747	AV *av = (AV *)mg->mg_obj;
		1748
		1749	abort ();
		1750
		1751	return 0;
		1752	}
		1753
		1754	static MGVTBL coro_gensub_vtbl = {
		1755	0, 0, 0, 0,
		1756	coro_gensub_free
		1757	};
		1758	#endif
		1759
		1760	/*****************************************************************************/
		1761	/* PerlIO::cede */
		1762
		1763	typedef struct
		1764	{
		1765	PerlIOBuf base;
		1766	NV next, every;
		1767	} PerlIOCede;
		1768
		1769	static IV
		1770	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1771	{
		1772	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1773
		1774	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1775	self->next = nvtime () + self->every;
		1776
		1777	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1778	}
		1779
		1780	static SV *
		1781	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1782	{
		1783	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1784
		1785	return newSVnv (self->every);
		1786	}
		1787
		1788	static IV
		1789	PerlIOCede_flush (pTHX_ PerlIO *f)
		1790	{
		1791	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1792	double now = nvtime ();
		1793
		1794	if (now >= self->next)
		1795	{
		1796	api_cede ();
		1797	self->next = now + self->every;
		1798	}
		1799
		1800	return PerlIOBuf_flush (aTHX_ f);
		1801	}
		1802
		1803	static PerlIO_funcs PerlIO_cede =
		1804	{
		1805	sizeof(PerlIO_funcs),
		1806	"cede",
		1807	sizeof(PerlIOCede),
		1808	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1809	PerlIOCede_pushed,
		1810	PerlIOBuf_popped,
		1811	PerlIOBuf_open,
		1812	PerlIOBase_binmode,
		1813	PerlIOCede_getarg,
		1814	PerlIOBase_fileno,
		1815	PerlIOBuf_dup,
		1816	PerlIOBuf_read,
		1817	PerlIOBuf_unread,
		1818	PerlIOBuf_write,
		1819	PerlIOBuf_seek,
		1820	PerlIOBuf_tell,
		1821	PerlIOBuf_close,
		1822	PerlIOCede_flush,
		1823	PerlIOBuf_fill,
		1824	PerlIOBase_eof,
		1825	PerlIOBase_error,
		1826	PerlIOBase_clearerr,
		1827	PerlIOBase_setlinebuf,
		1828	PerlIOBuf_get_base,
		1829	PerlIOBuf_bufsiz,
		1830	PerlIOBuf_get_ptr,
		1831	PerlIOBuf_get_cnt,
		1832	PerlIOBuf_set_ptrcnt,
		1833	};
		1834
		1835	/*****************************************************************************/
		1836
		1837	static const CV *ssl_cv; /* for quick consistency check */
		1838
		1839	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
		1840	static SV *ssl_arg0;
		1841	static SV *ssl_arg1;
		1842
		1843	/* this restores the stack in the case we patched the entersub, to */
		1844	/* recreate the stack frame as perl will on following calls */
		1845	/* since entersub cleared the stack */
		1846	static OP *
		1847	pp_restore (pTHX)
		1848	{
		1849	dSP;
		1850
		1851	PUSHMARK (SP);
		1852
		1853	EXTEND (SP, 3);
		1854	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
		1855	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
		1856	PUSHs ((SV *)CvGV (ssl_cv));
		1857
		1858	RETURNOP (ssl_restore.op_first);
		1859	}
		1860
		1861	/* declare prototype */
		1862	XS(XS_Coro__State__set_stacklevel);
		1863
		1864	#define OPpENTERSUB_SSL 15
		1865
		1866	static OP *
		1867	pp_set_stacklevel (pTHX)
		1868	{
		1869	dSP;
		1870	struct transfer_args ta;
		1871	SV **arg = PL_stack_base + TOPMARK + 1;
		1872	int items = SP - arg; /* args without function object */
		1873
		1874	/* do a quick consistency check on the "function" object, and if it isn't */
		1875	/* for us, divert to the real entersub */
		1876	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1877	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1878
		1879	/* pop args */
		1880	SP = PL_stack_base + POPMARK;
		1881
		1882	if (!(PL_op->op_flags & OPf_STACKED))
		1883	{
		1884	/* ampersand-form of call, use @_ instead of stack */
		1885	AV *av = GvAV (PL_defgv);
		1886	arg = AvARRAY (av);
		1887	items = AvFILLp (av) + 1;
		1888	}
		1889
		1890	PUTBACK;
		1891	switch (PL_op->op_private & OPpENTERSUB_SSL)
		1892	{
		1893	case 0:
		1894	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1895	break;
		1896
		1897	case 1:
		1898	if (items != 2)
		1899	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1900
		1901	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1902	break;
		1903
		1904	case 2:
		1905	prepare_schedule (aTHX_ &ta);
		1906	break;
		1907
		1908	case 3:
		1909	prepare_cede (aTHX_ &ta);
		1910	break;
		1911
		1912	case 4:
		1913	if (!prepare_cede_notself (aTHX_ &ta))
		1914	goto skip;
		1915
		1916	break;
		1917	}
		1918
		1919	TRANSFER (ta, 0);
		1920	SPAGAIN;
		1921
		1922	skip:
		1923	PUTBACK;
		1924	SSL_TAIL;
		1925	SPAGAIN;
		1926	RETURN;
		1927	}
		1928
1629	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1929	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1630		1930
1631	PROTOTYPES: DISABLE	1931	PROTOTYPES: DISABLE
1632
1633	BOOT:
1634	{
1635	#ifdef USE_ITHREADS
1636	MUTEX_INIT (&coro_mutex);
1637	#endif
1638	BOOT_PAGESIZE;
1639
1640	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1641	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1642
1643	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1644	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1645	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1646
1647	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1648	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1649	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1650
1651	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1652
1653	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1654	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1655	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1656	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1657
1658	main_mainstack = PL_mainstack;
1659	main_top_env = PL_top_env;
1660
1661	while (main_top_env->je_prev)
1662	main_top_env = main_top_env->je_prev;
1663
1664	coroapi.ver = CORO_API_VERSION;
1665	coroapi.rev = CORO_API_REVISION;
1666	coroapi.transfer = api_transfer;
1667
1668	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1669	}
1670
1671	SV *
1672	new (char *klass, ...)
1673	CODE:
1674	{
1675	struct coro *coro;
1676	MAGIC *mg;
1677	HV *hv;
1678	int i;
1679
1680	Newz (0, coro, 1, struct coro);
1681	coro->args = newAV ();
1682	coro->flags = CF_NEW;
1683
1684	if (coro_first) coro_first->prev = coro;
1685	coro->next = coro_first;
1686	coro_first = coro;
1687
1688	coro->hv = hv = newHV ();
1689	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1690	mg->mg_flags |= MGf_DUP;
1691	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1692
1693	av_extend (coro->args, items - 1);
1694	for (i = 1; i < items; i++)
1695	av_push (coro->args, newSVsv (ST (i)));
1696	}
1697	OUTPUT:
1698	RETVAL
1699		1932
1700	# these not obviously related functions are all rolled into the same xs	1933	# these not obviously related functions are all rolled into the same xs
1701	# function to increase chances that they all will call transfer with the same	1934	# function to increase chances that they all will call transfer with the same
1702	# stack offset	1935	# stack offset
1703	void	1936	void
…		…
1707	Coro::schedule = 2	1940	Coro::schedule = 2
1708	Coro::cede = 3	1941	Coro::cede = 3
1709	Coro::cede_notself = 4	1942	Coro::cede_notself = 4
1710	CODE:	1943	CODE:
1711	{	1944	{
1712	struct transfer_args ta;	1945	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1713		1946
1714	PUTBACK;	1947	assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1715	switch (ix)	1948	ssl_cv = cv;
		1949
		1950	/* we patch the op, and then re-run the whole call */
		1951	/* we have to put some dummy argument on the stack for this to work */
		1952	ssl_restore.op_next = (OP *)&ssl_restore;
		1953	ssl_restore.op_type = OP_NULL;
		1954	ssl_restore.op_ppaddr = pp_restore;
		1955	ssl_restore.op_first = PL_op;
		1956
		1957	ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
		1958	ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
		1959
		1960	PL_op->op_ppaddr = pp_set_stacklevel;
		1961	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
		1962
		1963	PL_op = (OP *)&ssl_restore;
		1964	}
		1965
		1966	BOOT:
		1967	{
		1968	#ifdef USE_ITHREADS
		1969	MUTEX_INIT (&coro_lock);
		1970	# if CORO_PTHREAD
		1971	coro_thx = PERL_GET_CONTEXT;
		1972	# endif
		1973	#endif
		1974	BOOT_PAGESIZE;
		1975
		1976	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1977	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1978
		1979	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1980	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1981	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1982
		1983	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1984	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1985	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1986
		1987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1988
		1989	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1990	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1991	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1992	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1993
		1994	main_mainstack = PL_mainstack;
		1995	main_top_env = PL_top_env;
		1996
		1997	while (main_top_env->je_prev)
		1998	main_top_env = main_top_env->je_prev;
		1999
		2000	coroapi.ver = CORO_API_VERSION;
		2001	coroapi.rev = CORO_API_REVISION;
		2002	coroapi.transfer = api_transfer;
		2003
1716	{	2004	{
1717	case 0:	2005	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1718	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1719	ta.next = 0;
1720	break;
1721		2006
1722	case 1:	2007	if (!svp) croak ("Time::HiRes is required");
1723	if (items != 2)	2008	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1724	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1725		2009
1726	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	2010	nvtime = INT2PTR (double (*)(), SvIV (*svp));
1727	break;
1728
1729	case 2:
1730	prepare_schedule (aTHX_ &ta);
1731	break;
1732
1733	case 3:
1734	prepare_cede (aTHX_ &ta);
1735	break;
1736
1737	case 4:
1738	if (!prepare_cede_notself (aTHX_ &ta))
1739	XSRETURN_EMPTY;
1740
1741	break;
1742	}	2011	}
1743	SPAGAIN;
1744		2012
1745	BARRIER;	2013	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1746	PUTBACK;
1747	TRANSFER (ta, 0);
1748	SPAGAIN; /* might be the sp of a different coroutine now */
1749	/* be extra careful not to ever do anything after TRANSFER */
1750	}	2014	}
		2015
		2016	SV *
		2017	new (char *klass, ...)
		2018	CODE:
		2019	{
		2020	struct coro *coro;
		2021	MAGIC *mg;
		2022	HV *hv;
		2023	int i;
		2024
		2025	Newz (0, coro, 1, struct coro);
		2026	coro->args = newAV ();
		2027	coro->flags = CF_NEW;
		2028
		2029	if (coro_first) coro_first->prev = coro;
		2030	coro->next = coro_first;
		2031	coro_first = coro;
		2032
		2033	coro->hv = hv = newHV ();
		2034	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		2035	mg->mg_flags |= MGf_DUP;
		2036	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		2037
		2038	av_extend (coro->args, items - 1);
		2039	for (i = 1; i < items; i++)
		2040	av_push (coro->args, newSVsv (ST (i)));
		2041	}
		2042	OUTPUT:
		2043	RETVAL
1751		2044
1752	bool	2045	bool
1753	_destroy (SV *coro_sv)	2046	_destroy (SV *coro_sv)
1754	CODE:	2047	CODE:
1755	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2048	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1763	_exit (code);	2056	_exit (code);
1764		2057
1765	int	2058	int
1766	cctx_stacksize (int new_stacksize = 0)	2059	cctx_stacksize (int new_stacksize = 0)
1767	CODE:	2060	CODE:
1768	RETVAL = coro_stacksize;	2061	RETVAL = cctx_stacksize;
1769	if (new_stacksize)	2062	if (new_stacksize)
		2063	{
1770	coro_stacksize = new_stacksize;	2064	cctx_stacksize = new_stacksize;
		2065	++cctx_gen;
		2066	}
		2067	OUTPUT:
		2068	RETVAL
		2069
		2070	int
		2071	cctx_max_idle (int max_idle = 0)
		2072	CODE:
		2073	RETVAL = cctx_max_idle;
		2074	if (max_idle > 1)
		2075	cctx_max_idle = max_idle;
1771	OUTPUT:	2076	OUTPUT:
1772	RETVAL	2077	RETVAL
1773		2078
1774	int	2079	int
1775	cctx_count ()	2080	cctx_count ()
…		…
1799	call (Coro::State coro, SV *coderef)	2104	call (Coro::State coro, SV *coderef)
1800	ALIAS:	2105	ALIAS:
1801	eval = 1	2106	eval = 1
1802	CODE:	2107	CODE:
1803	{	2108	{
1804	if (coro->mainstack)	2109	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1805	{	2110	{
1806	struct coro temp;	2111	struct coro temp;
1807		2112
1808	if (!(coro->flags & CF_RUNNING))	2113	if (!(coro->flags & CF_RUNNING))
1809	{	2114	{
…		…
1853	RETVAL = boolSV (coro->flags & ix);	2158	RETVAL = boolSV (coro->flags & ix);
1854	OUTPUT:	2159	OUTPUT:
1855	RETVAL	2160	RETVAL
1856		2161
1857	void	2162	void
		2163	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2164	PROTOTYPE: $;$
		2165	CODE:
		2166	SvREFCNT_dec (self->throw);
		2167	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2168
		2169	void
1858	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2170	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1859		2171
1860	SV *	2172	SV *
1861	has_cctx (Coro::State coro)	2173	has_cctx (Coro::State coro)
1862	PROTOTYPE: $	2174	PROTOTYPE: $
…		…
1871	CODE:	2183	CODE:
1872	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2184	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1873	OUTPUT:	2185	OUTPUT:
1874	RETVAL	2186	RETVAL
1875		2187
1876	IV	2188	UV
1877	rss (Coro::State coro)	2189	rss (Coro::State coro)
1878	PROTOTYPE: $	2190	PROTOTYPE: $
1879	ALIAS:	2191	ALIAS:
1880	usecount = 1	2192	usecount = 1
1881	CODE:	2193	CODE:
…		…
1891	force_cctx ()	2203	force_cctx ()
1892	CODE:	2204	CODE:
1893	struct coro *coro = SvSTATE (coro_current);	2205	struct coro *coro = SvSTATE (coro_current);
1894	coro->cctx->idle_sp = 0;	2206	coro->cctx->idle_sp = 0;
1895		2207
1896	MODULE = Coro::State PACKAGE = Coro
1897
1898	BOOT:
1899	{
1900	int i;
1901
1902	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1903	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1904	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1905
1906	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1907	SvREADONLY_on (coro_current);
1908
1909	coro_stash = gv_stashpv ("Coro", TRUE);
1910
1911	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1912	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1913	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1914	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1915	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1916	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1917
1918	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1919	coro_ready[i] = newAV ();
1920
1921	{
1922	SV *sv = perl_get_sv ("Coro::API", TRUE);
1923	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1924
1925	coroapi.schedule = api_schedule;
1926	coroapi.cede = api_cede;
1927	coroapi.cede_notself = api_cede_notself;
1928	coroapi.ready = api_ready;
1929	coroapi.is_ready = api_is_ready;
1930	coroapi.nready = &coro_nready;
1931	coroapi.current = coro_current;
1932
1933	GCoroAPI = &coroapi;
1934	sv_setiv (sv, (IV)&coroapi);
1935	SvREADONLY_on (sv);
1936	}
1937	}
1938
1939	void
1940	_set_current (SV *current)
1941	PROTOTYPE: $
1942	CODE:
1943	SvREFCNT_dec (SvRV (coro_current));
1944	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1945
1946	void
1947	_set_readyhook (SV *hook)
1948	PROTOTYPE: $
1949	CODE:
1950	LOCK;
1951	SvREFCNT_dec (coro_readyhook);
1952	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1953	UNLOCK;
1954
1955	int
1956	prio (Coro::State coro, int newprio = 0)
1957	ALIAS:
1958	nice = 1
1959	CODE:
1960	{
1961	RETVAL = coro->prio;
1962
1963	if (items > 1)
1964	{
1965	if (ix)
1966	newprio = coro->prio - newprio;
1967
1968	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1969	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1970
1971	coro->prio = newprio;
1972	}
1973	}
1974	OUTPUT:
1975	RETVAL
1976
1977	SV *
1978	ready (SV *self)
1979	PROTOTYPE: $
1980	CODE:
1981	RETVAL = boolSV (api_ready (self));
1982	OUTPUT:
1983	RETVAL
1984
1985	int
1986	nready (...)
1987	PROTOTYPE:
1988	CODE:
1989	RETVAL = coro_nready;
1990	OUTPUT:
1991	RETVAL
1992
1993	void
1994	throw (Coro::State self, SV *throw = &PL_sv_undef)
1995	PROTOTYPE: $;$
1996	CODE:
1997	SvREFCNT_dec (self->throw);
1998	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1999
2000	void	2208	void
2001	swap_defsv (Coro::State self)	2209	swap_defsv (Coro::State self)
2002	PROTOTYPE: $	2210	PROTOTYPE: $
2003	ALIAS:	2211	ALIAS:
2004	swap_defav = 1	2212	swap_defav = 1
…		…
2011	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2219	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2012		2220
2013	SV *tmp = *src; *src = *dst; *dst = tmp;	2221	SV *tmp = *src; *src = *dst; *dst = tmp;
2014	}	2222	}
2015		2223
		2224	MODULE = Coro::State PACKAGE = Coro
		2225
		2226	BOOT:
		2227	{
		2228	int i;
		2229
		2230	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2231	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2232	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2233
		2234	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2235	SvREADONLY_on (coro_current);
		2236
		2237	coro_stash = gv_stashpv ("Coro", TRUE);
		2238
		2239	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		2240	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		2241	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		2242	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		2243	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		2244	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		2245
		2246	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		2247	coro_ready[i] = newAV ();
		2248
		2249	{
		2250	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
		2251
		2252	coroapi.schedule = api_schedule;
		2253	coroapi.cede = api_cede;
		2254	coroapi.cede_notself = api_cede_notself;
		2255	coroapi.ready = api_ready;
		2256	coroapi.is_ready = api_is_ready;
		2257	coroapi.nready = &coro_nready;
		2258	coroapi.current = coro_current;
		2259
		2260	GCoroAPI = &coroapi;
		2261	sv_setiv (sv, (IV)&coroapi);
		2262	SvREADONLY_on (sv);
		2263	}
		2264	}
		2265
		2266	void
		2267	_set_current (SV *current)
		2268	PROTOTYPE: $
		2269	CODE:
		2270	SvREFCNT_dec (SvRV (coro_current));
		2271	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2272
		2273	void
		2274	_set_readyhook (SV *hook)
		2275	PROTOTYPE: $
		2276	CODE:
		2277	LOCK;
		2278	SvREFCNT_dec (coro_readyhook);
		2279	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2280	UNLOCK;
		2281
		2282	int
		2283	prio (Coro::State coro, int newprio = 0)
		2284	ALIAS:
		2285	nice = 1
		2286	CODE:
		2287	{
		2288	RETVAL = coro->prio;
		2289
		2290	if (items > 1)
		2291	{
		2292	if (ix)
		2293	newprio = coro->prio - newprio;
		2294
		2295	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		2296	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		2297
		2298	coro->prio = newprio;
		2299	}
		2300	}
		2301	OUTPUT:
		2302	RETVAL
		2303
		2304	SV *
		2305	ready (SV *self)
		2306	PROTOTYPE: $
		2307	CODE:
		2308	RETVAL = boolSV (api_ready (self));
		2309	OUTPUT:
		2310	RETVAL
		2311
		2312	int
		2313	nready (...)
		2314	PROTOTYPE:
		2315	CODE:
		2316	RETVAL = coro_nready;
		2317	OUTPUT:
		2318	RETVAL
		2319
2016	# for async_pool speedup	2320	# for async_pool speedup
2017	void	2321	void
2018	_pool_1 (SV *cb)	2322	_pool_1 (SV *cb)
2019	CODE:	2323	CODE:
2020	{	2324	{
…		…
2032	SvREFCNT_dec (old);	2336	SvREFCNT_dec (old);
2033	croak ("\3async_pool terminate\2\n");	2337	croak ("\3async_pool terminate\2\n");
2034	}	2338	}
2035		2339
2036	SvREFCNT_dec (coro->saved_deffh);	2340	SvREFCNT_dec (coro->saved_deffh);
2037	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2341	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2038		2342
2039	hv_store (hv, "desc", sizeof ("desc") - 1,	2343	hv_store (hv, "desc", sizeof ("desc") - 1,
2040	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2344	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2041		2345
2042	invoke_av = (AV *)SvRV (invoke);	2346	invoke_av = (AV *)SvRV (invoke);
…		…
2046		2350
2047	if (len > 0)	2351	if (len > 0)
2048	{	2352	{
2049	av_fill (defav, len - 1);	2353	av_fill (defav, len - 1);
2050	for (i = 0; i < len; ++i)	2354	for (i = 0; i < len; ++i)
2051	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2355	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2052	}	2356	}
2053		2357
2054	SvREFCNT_dec (invoke);	2358	SvREFCNT_dec (invoke);
2055	}	2359	}
2056		2360
…		…
2063	sv_setsv (cb, &PL_sv_undef);	2367	sv_setsv (cb, &PL_sv_undef);
2064		2368
2065	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2369	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2066	coro->saved_deffh = 0;	2370	coro->saved_deffh = 0;
2067		2371
2068	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2372	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2069	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2373	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2070	{	2374	{
2071	SV *old = PL_diehook;	2375	SV *old = PL_diehook;
2072	PL_diehook = 0;	2376	PL_diehook = 0;
2073	SvREFCNT_dec (old);	2377	SvREFCNT_dec (old);
…		…
2084	api_trace (coro_current, 0);	2388	api_trace (coro_current, 0);
2085		2389
2086	av_push (av_async_pool, newSVsv (coro_current));	2390	av_push (av_async_pool, newSVsv (coro_current));
2087	}	2391	}
2088		2392
		2393	#if 0
		2394
		2395	void
		2396	_generator_call (...)
		2397	PROTOTYPE: @
		2398	PPCODE:
		2399	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2400	xxxx
		2401	abort ();
		2402
		2403	SV *
		2404	gensub (SV *sub, ...)
		2405	PROTOTYPE: &;@
		2406	CODE:
		2407	{
		2408	struct coro *coro;
		2409	MAGIC *mg;
		2410	CV *xcv;
		2411	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2412	int i;
		2413
		2414	CvGV (ncv) = CvGV (cv);
		2415	CvFILE (ncv) = CvFILE (cv);
		2416
		2417	Newz (0, coro, 1, struct coro);
		2418	coro->args = newAV ();
		2419	coro->flags = CF_NEW;
		2420
		2421	av_extend (coro->args, items - 1);
		2422	for (i = 1; i < items; i++)
		2423	av_push (coro->args, newSVsv (ST (i)));
		2424
		2425	CvISXSUB_on (ncv);
		2426	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2427
		2428	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2429
		2430	CvXSUB (ncv) = CvXSUB (xcv);
		2431	CvANON_on (ncv);
		2432
		2433	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2434	RETVAL = newRV_noinc ((SV *)ncv);
		2435	}
		2436	OUTPUT:
		2437	RETVAL
		2438
		2439	#endif
		2440
2089		2441
2090	MODULE = Coro::State PACKAGE = Coro::AIO	2442	MODULE = Coro::State PACKAGE = Coro::AIO
2091		2443
2092	SV *	2444	void
2093	_get_state ()	2445	_get_state (SV *self)
2094	CODE:	2446	PPCODE:
2095	{	2447	{
2096	struct io_state *data;	2448	AV *defav = GvAV (PL_defgv);
2097		2449	AV *av = newAV ();
		2450	int i;
2098	RETVAL = newSV (sizeof (struct io_state));	2451	SV *data_sv = newSV (sizeof (struct io_state));
2099	data = (struct io_state *)SvPVX (RETVAL);	2452	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2100	SvCUR_set (RETVAL, sizeof (struct io_state));	2453	SvCUR_set (data_sv, sizeof (struct io_state));
2101	SvPOK_only (RETVAL);	2454	SvPOK_only (data_sv);
2102		2455
2103	data->errorno = errno;	2456	data->errorno = errno;
2104	data->laststype = PL_laststype;	2457	data->laststype = PL_laststype;
2105	data->laststatval = PL_laststatval;	2458	data->laststatval = PL_laststatval;
2106	data->statcache = PL_statcache;	2459	data->statcache = PL_statcache;
		2460
		2461	av_extend (av, AvFILLp (defav) + 1 + 1);
		2462
		2463	for (i = 0; i <= AvFILLp (defav); ++i)
		2464	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2465
		2466	av_push (av, data_sv);
		2467
		2468	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2469
		2470	api_ready (self);
2107	}	2471	}
2108	OUTPUT:
2109	RETVAL
2110		2472
2111	void	2473	void
2112	_set_state (char *data_)	2474	_set_state (SV *state)
2113	PROTOTYPE: $	2475	PROTOTYPE: $
2114	CODE:	2476	PPCODE:
2115	{	2477	{
2116	struct io_state *data = (void *)data_;	2478	AV *av = (AV *)SvRV (state);
		2479	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2480	int i;
2117		2481
2118	errno = data->errorno;	2482	errno = data->errorno;
2119	PL_laststype = data->laststype;	2483	PL_laststype = data->laststype;
2120	PL_laststatval = data->laststatval;	2484	PL_laststatval = data->laststatval;
2121	PL_statcache = data->statcache;	2485	PL_statcache = data->statcache;
		2486
		2487	EXTEND (SP, AvFILLp (av));
		2488	for (i = 0; i < AvFILLp (av); ++i)
		2489	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2122	}	2490	}
2123		2491
2124		2492
2125	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2493	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2126		2494
…		…
2150	}	2518	}
2151		2519
2152	--incede;	2520	--incede;
2153	}	2521	}
2154		2522
		2523
		2524	MODULE = Coro::State PACKAGE = PerlIO::cede
		2525
		2526	BOOT:
		2527	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2528

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