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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC vs.
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
…		…
45	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
46	#endif	47	#endif
47		48
48	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
49	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51	#else
52	# define REGISTER_STACK(cctx,start,end)
53	#endif	51	#endif
54		52
55	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
56	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
57		55
58	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
59	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
60	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
61	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
80	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
81	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
82	# endif	80	# endif
83	#endif	81	#endif
84		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
85	/* 5.8.8 */	93	/* 5.8.8 */
86	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
87	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
88	#endif	96	#endif
89	#ifndef newSV	97	#ifndef newSV
90	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
91	#endif	99	#endif
92		100
93	/* 5.11 */
94	#ifndef CxHASARGS
95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96	#endif
97
98	/* 5.8.7 */	101	/* 5.8.7 */
99	#ifndef SvRV_set	102	#ifndef SvRV_set
100	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
101	#endif	104	#endif
102		105
…		…
113	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
114	#endif	117	#endif
115		118
116	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
117	* portable way as possible. */	120	* portable way as possible. */
118	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
119	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
		125	#endif
120		126
121	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
122		128
123	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
124	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
127	#else	133	#else
128	# define attribute(x)	134	# define attribute(x)
129	# define BARRIER
130	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
131	#endif	137	#endif
132		138
133	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
134	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
135		141
136	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
137		143
138	#include "CoroAPI.h"	144	#include "CoroAPI.h"
139		145
140	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
141	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
144	#else	155	#else
		156
145	# define LOCK (void)0	157	# define LOCK (void)0
146	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
147	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
148		166
149	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
150	struct io_state	168	struct io_state
151	{	169	{
		170	AV *res;
152	int errorno;	171	int errorno;
153	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
154	int laststatval;	173	int laststatval;
155	Stat_t statcache;	174	Stat_t statcache;
156	};	175	};
157		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
158	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
		187
		188	struct transfer_args
		189	{
		190	struct coro *prev, *next;
		191	};
164		192
165	static GV *irsgv; /* $/ */	193	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	194	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	195	static SV *rv_diehook;
168	static SV *rv_warnhook;	196	static SV *rv_warnhook;
…		…
200	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	228	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	229	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202	JMPENV *top_env;	230	JMPENV *top_env;
203	coro_context cctx;	231	coro_context cctx;
204		232
		233	U32 gen;
205	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
206	int valgrind_id;	235	int valgrind_id;
207	#endif	236	#endif
208	unsigned char flags;	237	unsigned char flags;
209	} coro_cctx;	238	} coro_cctx;
…		…
269	#define PRIO_MIN -4	298	#define PRIO_MIN -4
270		299
271	/* for Coro.pm */	300	/* for Coro.pm */
272	static SV *coro_current;	301	static SV *coro_current;
273	static SV *coro_readyhook;	302	static SV *coro_readyhook;
274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275	static int coro_nready;
276	static struct coro *coro_first;	304	static struct coro *coro_first;
		305	#define coro_nready coroapi.nready
277		306
278	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
279		308
280	static SV *	309	static SV *
281	coro_get_sv (pTHX_ const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
…		…
321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322	#endif	351	#endif
323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324	--AvFILLp (padlist);	353	--AvFILLp (padlist);
325		354
326	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
328		357
329	return newpadlist;	358	return newpadlist;
330	}	359	}
331		360
…		…
374	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
375	0, 0, 0, 0,	404	0, 0, 0, 0,
376	coro_cv_free	405	coro_cv_free
377	};	406	};
378		407
379	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
380	SvMAGIC (sv) \	409	SvMAGIC (sv) \
381	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
382	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
383	: mg_find (sv, type) \	412	: mg_find (sv, type) \
384	: 0	413	: 0
385		414
386	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388		417
389	static struct coro *	418	INLINE struct coro *
390	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
391	{	420	{
392	HV *stash;	421	HV *stash;
393	MAGIC *mg;	422	MAGIC *mg;
394		423
…		…
619		648
620	/*	649	/*
621	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
622	*/	651	*/
623	static void	652	static void
624	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
625	{	654	{
626	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
627	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
628		657
629	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
683	#endif	712	#endif
684	}	713	}
685	}	714	}
686		715
687	return rss;	716	return rss;
		717	}
		718
		719	/** set stacklevel support **************************************************/
		720
		721	/* we sometimes need to create the effect of pp_slf calling us */
		722	#define SLF_HEAD (void)0
		723	/* we sometimes need to create the effect of leaving via pp_slf */
		724	#define SLF_TAIL slf_tail (aTHX)
		725
		726	INLINE void
		727	slf_tail (pTHX)
		728	{
		729	dSP;
		730	SV **bot = SP;
		731
		732	int gimme = GIMME_V;
		733
		734	/* make sure we put something on the stack in scalar context */
		735	if (gimme == G_SCALAR)
		736	{
		737	if (sp == bot)
		738	XPUSHs (&PL_sv_undef);
		739
		740	SP = bot + 1;
		741	}
		742
		743	PUTBACK;
688	}	744	}
689		745
690	/** coroutine stack handling ************************************************/	746	/** coroutine stack handling ************************************************/
691		747
692	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	748	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
…		…
807	GvSV (PL_defgv) = newSV (0);	863	GvSV (PL_defgv) = newSV (0);
808	GvAV (PL_defgv) = coro->args; coro->args = 0;	864	GvAV (PL_defgv) = coro->args; coro->args = 0;
809	GvSV (PL_errgv) = newSV (0);	865	GvSV (PL_errgv) = newSV (0);
810	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	866	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
811	PL_rs = newSVsv (GvSV (irsgv));	867	PL_rs = newSVsv (GvSV (irsgv));
812	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	868	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
813		869
814	{	870	{
815	dSP;	871	dSP;
816	LOGOP myop;	872	UNOP myop;
817		873
818	Zero (&myop, 1, LOGOP);	874	Zero (&myop, 1, UNOP);
819	myop.op_next = Nullop;	875	myop.op_next = Nullop;
820	myop.op_flags = OPf_WANT_VOID;	876	myop.op_flags = OPf_WANT_VOID;
821		877
822	PUSHMARK (SP);	878	PUSHMARK (SP);
823	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
826	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
827	SPAGAIN;	883	SPAGAIN;
828	}	884	}
829		885
830	/* this newly created coroutine might be run on an existing cctx which most	886	/* this newly created coroutine might be run on an existing cctx which most
831	* likely was suspended in set_stacklevel, called from entersub.	887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
832	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	888	* so we have to emulate entering pp_set_stacklevel here.
833	* so we ENTER here for symmetry
834	*/	889	*/
835	ENTER;	890	SLF_HEAD;
836	}	891	}
837		892
838	static void	893	static void
839	coro_destroy (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
840	{	895	{
841	if (!IN_DESTRUCT)	896	if (!IN_DESTRUCT)
842	{	897	{
843	/* restore all saved variables and stuff */	898	/* restore all saved variables and stuff */
844	LEAVE_SCOPE (0);	899	LEAVE_SCOPE (0);
…		…
866	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
867		922
868	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
869	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro->throw);
870		925
871	coro_destroy_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
872	}	927	}
873		928
874	static void	929	INLINE void
875	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
876	{	931	{
877	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
878	{	933	{
879	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
913	: cx->blk_gimme == G_SCALAR ? bot + 1	968	: cx->blk_gimme == G_SCALAR ? bot + 1
914	: bot;	969	: bot;
915		970
916	av_extend (av, top - bot);	971	av_extend (av, top - bot);
917	while (bot < top)	972	while (bot < top)
918	av_push (av, SvREFCNT_inc (*bot++));	973	av_push (av, SvREFCNT_inc_NN (*bot++));
919		974
920	PL_runops = RUNOPS_DEFAULT;	975	PL_runops = RUNOPS_DEFAULT;
921	ENTER;	976	ENTER;
922	SAVETMPS;	977	SAVETMPS;
923	EXTEND (SP, 3);	978	EXTEND (SP, 3);
…		…
1003		1058
1004	TAINT_NOT;	1059	TAINT_NOT;
1005	return 0;	1060	return 0;
1006	}	1061	}
1007		1062
		1063	static void
		1064	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1065	{
		1066	ta->prev = (struct coro *)cctx;
		1067	ta->next = 0;
		1068	}
		1069
1008	/* inject a fake call to Coro::State::_cctx_init into the execution */	1070	/* inject a fake call to Coro::State::_cctx_init into the execution */
1009	/* _cctx_init should be careful, as it could be called at almost any time */	1071	/* _cctx_init should be careful, as it could be called at almost any time */
1010	/* during execution of a perl program */	1072	/* during execution of a perl program */
		1073	/* also initialises PL_top_env */
1011	static void NOINLINE	1074	static void NOINLINE
1012	cctx_prepare (pTHX_ coro_cctx *cctx)	1075	cctx_prepare (pTHX_ coro_cctx *cctx)
1013	{	1076	{
1014	dSP;	1077	dSP;
1015	LOGOP myop;	1078	UNOP myop;
1016		1079
1017	PL_top_env = &PL_start_env;	1080	PL_top_env = &PL_start_env;
1018		1081
1019	if (cctx->flags & CC_TRACE)	1082	if (cctx->flags & CC_TRACE)
1020	PL_runops = runops_trace;	1083	PL_runops = runops_trace;
1021		1084
1022	Zero (&myop, 1, LOGOP);	1085	Zero (&myop, 1, UNOP);
1023	myop.op_next = PL_op;	1086	myop.op_next = PL_op;
1024	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1087	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1025		1088
1026	PUSHMARK (SP);	1089	PUSHMARK (SP);
1027	EXTEND (SP, 2);	1090	EXTEND (SP, 2);
1028	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1029	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1030	PUTBACK;	1093	PUTBACK;
1031	PL_op = (OP *)&myop;	1094	PL_op = (OP *)&myop;
1032	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1033	SPAGAIN;	1096	SPAGAIN;
1034	}	1097	}
1035		1098
		1099	/* the tail of transfer: execute stuff we can only do after a transfer */
		1100	INLINE void
		1101	transfer_tail (pTHX)
		1102	{
		1103	struct coro *next = (struct coro *)transfer_next;
		1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1106
		1107	free_coro_mortal (aTHX);
		1108	UNLOCK;
		1109
		1110	if (expect_false (next->throw))
		1111	{
		1112	SV *exception = sv_2mortal (next->throw);
		1113
		1114	next->throw = 0;
		1115	sv_setsv (ERRSV, exception);
		1116	croak (0);
		1117	}
		1118	}
		1119
1036	/*	1120	/*
1037	* this is a _very_ stripped down perl interpreter ;)	1121	* this is a _very_ stripped down perl interpreter ;)
1038	*/	1122	*/
1039	static void	1123	static void
1040	cctx_run (void *arg)	1124	cctx_run (void *arg)
1041	{	1125	{
		1126	#ifdef USE_ITHREADS
		1127	# if CORO_PTHREAD
		1128	PERL_SET_CONTEXT (coro_thx);
		1129	# endif
		1130	#endif
		1131	{
1042	dTHX;	1132	dTHX;
1043		1133
1044	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1134	/* we are the alternative tail to pp_set_stacklevel */
1045	UNLOCK;	1135	/* so do the same things here */
		1136	SLF_TAIL;
1046		1137
1047	/* we now skip the entersub that lead to transfer() */	1138	/* we now skip the op that did lead to transfer() */
1048	PL_op = PL_op->op_next;	1139	PL_op = PL_op->op_next;
1049		1140
1050	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
1051	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
1052		1143
		1144	/* cctx_run is the alternative tail of transfer() */
		1145	transfer_tail (aTHX);
		1146
1053	/* somebody or something will hit me for both perl_run and PL_restartop */	1147	/* somebody or something will hit me for both perl_run and PL_restartop */
1054	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1055	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
1056		1150
1057	/*	1151	/*
1058	* If perl-run returns we assume exit() was being called or the coro	1152	* If perl-run returns we assume exit() was being called or the coro
1059	* fell off the end, which seems to be the only valid (non-bug)	1153	* fell off the end, which seems to be the only valid (non-bug)
1060	* reason for perl_run to return. We try to exit by jumping to the	1154	* reason for perl_run to return. We try to exit by jumping to the
1061	* bootstrap-time "top" top_env, as we cannot restore the "main"	1155	* bootstrap-time "top" top_env, as we cannot restore the "main"
1062	* coroutine as Coro has no such concept	1156	* coroutine as Coro has no such concept
1063	*/	1157	*/
1064	PL_top_env = main_top_env;	1158	PL_top_env = main_top_env;
1065	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1159	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1160	}
1066	}	1161	}
1067		1162
1068	static coro_cctx *	1163	static coro_cctx *
1069	cctx_new ()	1164	cctx_new ()
1070	{	1165	{
1071	coro_cctx *cctx;	1166	coro_cctx *cctx;
		1167
		1168	++cctx_count;
		1169	New (0, cctx, 1, coro_cctx);
		1170
		1171	cctx->gen = cctx_gen;
		1172	cctx->flags = 0;
		1173	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1174
		1175	return cctx;
		1176	}
		1177
		1178	/* create a new cctx only suitable as source */
		1179	static coro_cctx *
		1180	cctx_new_empty ()
		1181	{
		1182	coro_cctx *cctx = cctx_new ();
		1183
		1184	cctx->sptr = 0;
		1185	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1186
		1187	return cctx;
		1188	}
		1189
		1190	/* create a new cctx suitable as destination/running a perl interpreter */
		1191	static coro_cctx *
		1192	cctx_new_run ()
		1193	{
		1194	coro_cctx *cctx = cctx_new ();
1072	void *stack_start;	1195	void *stack_start;
1073	size_t stack_size;	1196	size_t stack_size;
1074		1197
1075	++cctx_count;
1076
1077	Newz (0, cctx, 1, coro_cctx);
1078
1079	#if HAVE_MMAP	1198	#if HAVE_MMAP
1080	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1199	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1081	/* mmap supposedly does allocate-on-write for us */	1200	/* mmap supposedly does allocate-on-write for us */
1082	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1201	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1083		1202
1084	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1085	{	1204	{
1086	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1087	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1088	# endif	1207	#endif
1089	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1090	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091	cctx->flags |= CC_MAPPED;	1210	cctx->flags |= CC_MAPPED;
1092	}	1211	}
1093	else	1212	else
1094	#endif	1213	#endif
1095	{	1214	{
1096	cctx->ssize = coro_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1097	New (0, cctx->sptr, coro_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1098		1217
1099	if (!cctx->sptr)	1218	if (!cctx->sptr)
1100	{	1219	{
1101	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1102	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1103	}	1222	}
1104		1223
1105	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1106	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1107	}	1226	}
1108		1227
1109	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1228	#if CORO_USE_VALGRIND
		1229	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1230	#endif
		1231
1110	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1232	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1111		1233
1112	return cctx;	1234	return cctx;
1113	}	1235	}
1114		1236
…		…
1117	{	1239	{
1118	if (!cctx)	1240	if (!cctx)
1119	return;	1241	return;
1120		1242
1121	--cctx_count;	1243	--cctx_count;
		1244	coro_destroy (&cctx->cctx);
1122		1245
		1246	/* coro_transfer creates new, empty cctx's */
		1247	if (cctx->sptr)
		1248	{
1123	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1124	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1125	#endif	1251	#endif
1126		1252
1127	#if HAVE_MMAP	1253	#if HAVE_MMAP
1128	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1129	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1130	else	1256	else
1131	#endif	1257	#endif
1132	Safefree (cctx->sptr);	1258	Safefree (cctx->sptr);
		1259	}
1133		1260
1134	Safefree (cctx);	1261	Safefree (cctx);
1135	}	1262	}
1136		1263
1137	/* wether this cctx should be destructed */	1264	/* wether this cctx should be destructed */
1138	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1265	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1139		1266
1140	static coro_cctx *	1267	static coro_cctx *
1141	cctx_get (pTHX)	1268	cctx_get (pTHX)
1142	{	1269	{
1143	while (expect_true (cctx_first))	1270	while (expect_true (cctx_first))
…		…
1150	return cctx;	1277	return cctx;
1151		1278
1152	cctx_destroy (cctx);	1279	cctx_destroy (cctx);
1153	}	1280	}
1154		1281
1155	return cctx_new ();	1282	return cctx_new_run ();
1156	}	1283	}
1157		1284
1158	static void	1285	static void
1159	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1160	{	1287	{
		1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1289
1161	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1162	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1163	{	1292	{
1164	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
1165	cctx_first = first->next;	1294	cctx_first = first->next;
1166	--cctx_idle;	1295	--cctx_idle;
1167		1296
…		…
1199	/* always use the TRANSFER macro */	1328	/* always use the TRANSFER macro */
1200	static void NOINLINE	1329	static void NOINLINE
1201	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1330	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1202	{	1331	{
1203	dSTACKLEVEL;	1332	dSTACKLEVEL;
1204	static volatile int has_throw;
1205		1333
1206	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1207	if (expect_false (!next))	1335	if (expect_false (!next))
1208	{	1336	{
1209	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1210	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1338	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1211	}	1339	}
1212	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1213	{	1341	{
1214	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
1215		1343
1216	if (expect_false (prev->flags & CF_NEW))	1344	if (expect_false (prev->flags & CF_NEW))
1217	{	1345	{
1218	/* create a new empty context */	1346	/* create a new empty/source context */
1219	Newz (0, prev->cctx, 1, coro_cctx);	1347	prev->cctx = cctx_new_empty ();
1220	prev->flags &= ~CF_NEW;	1348	prev->flags &= ~CF_NEW;
1221	prev->flags |= CF_RUNNING;	1349	prev->flags |= CF_RUNNING;
1222	}	1350	}
1223		1351
1224	prev->flags &= ~CF_RUNNING;	1352	prev->flags &= ~CF_RUNNING;
…		…
1239	else	1367	else
1240	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1241		1369
1242	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1243		1371
1244	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1245	if (expect_true (	1373	if (expect_true (
1246	prev__cctx->idle_sp == STACKLEVEL	1374	prev__cctx->idle_sp == stacklevel
1247	&& !(prev__cctx->flags & CC_TRACE)	1375	&& !(prev__cctx->flags & CC_TRACE)
1248	&& !force_cctx	1376	&& !force_cctx
1249	))	1377	))
1250	{	1378	{
1251	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1252	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1380	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1253		1381
1254	prev->cctx = 0;	1382	prev->cctx = 0;
1255		1383
1256	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1384	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1257	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1385	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1265	++next->usecount;	1393	++next->usecount;
1266		1394
1267	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1268	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1269		1397
1270	has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1271		1400
1272	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1273	{	1402	{
1274	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1275	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1276	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1277	}	1406	}
1278		1407
1279	free_coro_mortal (aTHX);	1408	transfer_tail (aTHX);
1280	UNLOCK;
1281
1282	if (expect_false (has_throw))
1283	{
1284	struct coro *coro = SvSTATE (coro_current);
1285
1286	if (coro->throw)
1287	{
1288	SV *exception = coro->throw;
1289	coro->throw = 0;
1290	sv_setsv (ERRSV, exception);
1291	croak (0);
1292	}
1293	}
1294	}	1409	}
1295	}	1410	}
1296
1297	struct transfer_args
1298	{
1299	struct coro *prev, *next;
1300	};
1301		1411
1302	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1412	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1303	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1304		1414
1305	/** high level stuff ********************************************************/	1415	/** high level stuff ********************************************************/
…		…
1331	croak ("FATAL: tried to destroy currently running coroutine");	1441	croak ("FATAL: tried to destroy currently running coroutine");
1332		1442
1333	save_perl (aTHX_ &temp);	1443	save_perl (aTHX_ &temp);
1334	load_perl (aTHX_ coro);	1444	load_perl (aTHX_ coro);
1335		1445
1336	coro_destroy (aTHX_ coro);	1446	coro_destruct (aTHX_ coro);
1337		1447
1338	load_perl (aTHX_ &temp);	1448	load_perl (aTHX_ &temp);
1339		1449
1340	coro->slot = 0;	1450	coro->slot = 0;
1341	}	1451	}
…		…
1395	ta->next = SvSTATE (next_sv);	1505	ta->next = SvSTATE (next_sv);
1396	TRANSFER_CHECK (*ta);	1506	TRANSFER_CHECK (*ta);
1397	}	1507	}
1398		1508
1399	static void	1509	static void
1400	api_transfer (SV *prev_sv, SV *next_sv)	1510	api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1401	{	1511	{
1402	dTHX;
1403	struct transfer_args ta;	1512	struct transfer_args ta;
1404		1513
1405	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1406	TRANSFER (ta, 1);	1515	TRANSFER (ta, 1);
1407	}	1516	}
…		…
1425		1534
1426	return 0;	1535	return 0;
1427	}	1536	}
1428		1537
1429	static int	1538	static int
1430	api_ready (SV *coro_sv)	1539	api_ready (pTHX_ SV *coro_sv)
1431	{	1540	{
1432	dTHX;
1433	struct coro *coro;	1541	struct coro *coro;
1434	SV *sv_hook;	1542	SV *sv_hook;
1435	void (*xs_hook)(void);	1543	void (*xs_hook)(void);
1436		1544
1437	if (SvROK (coro_sv))	1545	if (SvROK (coro_sv))
…		…
1447	LOCK;	1555	LOCK;
1448		1556
1449	sv_hook = coro_nready ? 0 : coro_readyhook;	1557	sv_hook = coro_nready ? 0 : coro_readyhook;
1450	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1558	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451		1559
1452	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1560	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1453	++coro_nready;	1561	++coro_nready;
1454		1562
1455	UNLOCK;	1563	UNLOCK;
1456		1564
1457	if (sv_hook)	1565	if (sv_hook)
…		…
1475		1583
1476	return 1;	1584	return 1;
1477	}	1585	}
1478		1586
1479	static int	1587	static int
1480	api_is_ready (SV *coro_sv)	1588	api_is_ready (pTHX_ SV *coro_sv)
1481	{	1589	{
1482	dTHX;
1483	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1590	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1484	}	1591	}
1485		1592
1486	static void	1593	INLINE void
1487	prepare_schedule (pTHX_ struct transfer_args *ta)	1594	prepare_schedule (pTHX_ struct transfer_args *ta)
1488	{	1595	{
1489	SV *prev_sv, *next_sv;	1596	SV *prev_sv, *next_sv;
1490		1597
1491	for (;;)	1598	for (;;)
…		…
1517	/* cannot transfer to destroyed coros, skip and look for next */	1624	/* cannot transfer to destroyed coros, skip and look for next */
1518	if (expect_false (ta->next->flags & CF_DESTROYED))	1625	if (expect_false (ta->next->flags & CF_DESTROYED))
1519	{	1626	{
1520	UNLOCK;	1627	UNLOCK;
1521	SvREFCNT_dec (next_sv);	1628	SvREFCNT_dec (next_sv);
1522	/* coro_nready is already taken care of by destroy */	1629	/* coro_nready has already been taken care of by destroy */
1523	continue;	1630	continue;
1524	}	1631	}
1525		1632
1526	--coro_nready;	1633	--coro_nready;
1527	UNLOCK;	1634	UNLOCK;
…		…
1530		1637
1531	/* free this only after the transfer */	1638	/* free this only after the transfer */
1532	prev_sv = SvRV (coro_current);	1639	prev_sv = SvRV (coro_current);
1533	ta->prev = SvSTATE (prev_sv);	1640	ta->prev = SvSTATE (prev_sv);
1534	TRANSFER_CHECK (*ta);	1641	TRANSFER_CHECK (*ta);
1535	assert (ta->next->flags & CF_READY);	1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1536	ta->next->flags &= ~CF_READY;	1643	ta->next->flags &= ~CF_READY;
1537	SvRV_set (coro_current, next_sv);	1644	SvRV_set (coro_current, next_sv);
1538		1645
1539	LOCK;	1646	LOCK;
1540	free_coro_mortal (aTHX);	1647	free_coro_mortal (aTHX);
1541	coro_mortal = prev_sv;	1648	coro_mortal = prev_sv;
1542	UNLOCK;	1649	UNLOCK;
1543	}	1650	}
1544		1651
		1652	INLINE void
		1653	prepare_cede (pTHX_ struct transfer_args *ta)
		1654	{
		1655	api_ready (aTHX_ coro_current);
		1656	prepare_schedule (aTHX_ ta);
		1657	}
		1658
1545	static void	1659	static void
1546	prepare_cede (pTHX_ struct transfer_args *ta)	1660	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1547	{	1661	{
1548	api_ready (coro_current);	1662	SV *prev = SvRV (coro_current);
		1663
		1664	if (coro_nready)
		1665	{
		1666	prepare_schedule (aTHX_ ta);
		1667	api_ready (aTHX_ prev);
		1668	}
		1669	else
		1670	ta->prev = ta->next = SvSTATE (prev);
		1671	}
		1672
		1673	static void
		1674	api_schedule (pTHX)
		1675	{
		1676	struct transfer_args ta;
		1677
1549	prepare_schedule (aTHX_ ta);	1678	prepare_schedule (aTHX_ &ta);
		1679	TRANSFER (ta, 1);
1550	}	1680	}
1551		1681
1552	static int	1682	static int
1553	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1683	api_cede (pTHX)
1554	{	1684	{
1555	if (coro_nready)	1685	struct transfer_args ta;
1556	{	1686
1557	SV *prev = SvRV (coro_current);
1558	prepare_schedule (aTHX_ ta);	1687	prepare_cede (aTHX_ &ta);
1559	api_ready (prev);	1688
		1689	if (expect_true (ta.prev != ta.next))
		1690	{
		1691	TRANSFER (ta, 1);
1560	return 1;	1692	return 1;
1561	}	1693	}
1562	else	1694	else
1563	return 0;	1695	return 0;
1564	}	1696	}
1565		1697
1566	static void
1567	api_schedule (void)
1568	{
1569	dTHX;
1570	struct transfer_args ta;
1571
1572	prepare_schedule (aTHX_ &ta);
1573	TRANSFER (ta, 1);
1574	}
1575
1576	static int	1698	static int
1577	api_cede (void)	1699	api_cede_notself (pTHX)
1578	{	1700	{
1579	dTHX;	1701	if (coro_nready)
		1702	{
1580	struct transfer_args ta;	1703	struct transfer_args ta;
1581		1704
1582	prepare_cede (aTHX_ &ta);	1705	prepare_cede_notself (aTHX_ &ta);
1583
1584	if (expect_true (ta.prev != ta.next))
1585	{
1586	TRANSFER (ta, 1);	1706	TRANSFER (ta, 1);
1587	return 1;	1707	return 1;
1588	}	1708	}
1589	else	1709	else
1590	return 0;	1710	return 0;
1591	}	1711	}
1592		1712
1593	static int
1594	api_cede_notself (void)
1595	{
1596	dTHX;
1597	struct transfer_args ta;
1598
1599	if (prepare_cede_notself (aTHX_ &ta))
1600	{
1601	TRANSFER (ta, 1);
1602	return 1;
1603	}
1604	else
1605	return 0;
1606	}
1607
1608	static void	1713	static void
1609	api_trace (SV *coro_sv, int flags)	1714	api_trace (pTHX_ SV *coro_sv, int flags)
1610	{	1715	{
1611	dTHX;
1612	struct coro *coro = SvSTATE (coro_sv);	1716	struct coro *coro = SvSTATE (coro_sv);
1613		1717
1614	if (flags & CC_TRACE)	1718	if (flags & CC_TRACE)
1615	{	1719	{
1616	if (!coro->cctx)	1720	if (!coro->cctx)
1617	coro->cctx = cctx_new ();	1721	coro->cctx = cctx_new_run ();
1618	else if (!(coro->cctx->flags & CC_TRACE))	1722	else if (!(coro->cctx->flags & CC_TRACE))
1619	croak ("cannot enable tracing on coroutine with custom stack");	1723	croak ("cannot enable tracing on coroutine with custom stack");
1620		1724
1621	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1725	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622	}	1726	}
…		…
1629	else	1733	else
1630	coro->slot->runops = RUNOPS_DEFAULT;	1734	coro->slot->runops = RUNOPS_DEFAULT;
1631	}	1735	}
1632	}	1736	}
1633		1737
		1738	#if 0
1634	static int	1739	static int
1635	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1740	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1636	{	1741	{
1637	AV *padlist;	1742	AV *padlist;
1638	AV *av = (AV *)mg->mg_obj;	1743	AV *av = (AV *)mg->mg_obj;
…		…
1644		1749
1645	static MGVTBL coro_gensub_vtbl = {	1750	static MGVTBL coro_gensub_vtbl = {
1646	0, 0, 0, 0,	1751	0, 0, 0, 0,
1647	coro_gensub_free	1752	coro_gensub_free
1648	};	1753	};
		1754	#endif
		1755
		1756	/*****************************************************************************/
		1757	/* PerlIO::cede */
		1758
		1759	typedef struct
		1760	{
		1761	PerlIOBuf base;
		1762	NV next, every;
		1763	} PerlIOCede;
		1764
		1765	static IV
		1766	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1767	{
		1768	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1769
		1770	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1771	self->next = nvtime () + self->every;
		1772
		1773	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1774	}
		1775
		1776	static SV *
		1777	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1778	{
		1779	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1780
		1781	return newSVnv (self->every);
		1782	}
		1783
		1784	static IV
		1785	PerlIOCede_flush (pTHX_ PerlIO *f)
		1786	{
		1787	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1788	double now = nvtime ();
		1789
		1790	if (now >= self->next)
		1791	{
		1792	api_cede (aTHX);
		1793	self->next = now + self->every;
		1794	}
		1795
		1796	return PerlIOBuf_flush (aTHX_ f);
		1797	}
		1798
		1799	static PerlIO_funcs PerlIO_cede =
		1800	{
		1801	sizeof(PerlIO_funcs),
		1802	"cede",
		1803	sizeof(PerlIOCede),
		1804	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1805	PerlIOCede_pushed,
		1806	PerlIOBuf_popped,
		1807	PerlIOBuf_open,
		1808	PerlIOBase_binmode,
		1809	PerlIOCede_getarg,
		1810	PerlIOBase_fileno,
		1811	PerlIOBuf_dup,
		1812	PerlIOBuf_read,
		1813	PerlIOBuf_unread,
		1814	PerlIOBuf_write,
		1815	PerlIOBuf_seek,
		1816	PerlIOBuf_tell,
		1817	PerlIOBuf_close,
		1818	PerlIOCede_flush,
		1819	PerlIOBuf_fill,
		1820	PerlIOBase_eof,
		1821	PerlIOBase_error,
		1822	PerlIOBase_clearerr,
		1823	PerlIOBase_setlinebuf,
		1824	PerlIOBuf_get_base,
		1825	PerlIOBuf_bufsiz,
		1826	PerlIOBuf_get_ptr,
		1827	PerlIOBuf_get_cnt,
		1828	PerlIOBuf_set_ptrcnt,
		1829	};
		1830
		1831	/*****************************************************************************/
		1832
		1833	static const CV *slf_cv; /* for quick consistency check */
		1834
		1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1836	static SV *slf_arg0;
		1837	static SV *slf_arg1;
		1838
		1839	/* this restores the stack in the case we patched the entersub, to */
		1840	/* recreate the stack frame as perl will on following calls */
		1841	/* since entersub cleared the stack */
		1842	static OP *
		1843	pp_restore (pTHX)
		1844	{
		1845	dSP;
		1846
		1847	PUSHMARK (SP);
		1848
		1849	EXTEND (SP, 3);
		1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1852	PUSHs ((SV *)CvGV (slf_cv));
		1853
		1854	RETURNOP (slf_restore.op_first);
		1855	}
		1856
		1857	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
		1858
		1859	enum {
		1860	CORO_SLF_CUSTOM = 0,
		1861	CORO_SLF_SET_STACKLEVEL = 1,
		1862	CORO_SLF_TRANSFER = 2
		1863	};
		1864
		1865	/* declare prototype */
		1866	XS(XS_Coro__State__set_stacklevel);
		1867
		1868	/*
		1869	* these not obviously related functions are all rolled into one
		1870	* function to increase chances that they all will call transfer with the same
		1871	* stack offset
		1872	* SLF stands for "schedule-like-function".
		1873	*/
		1874	static OP *
		1875	pp_slf (pTHX)
		1876	{
		1877	dSP;
		1878	struct transfer_args ta;
		1879	SV **arg = PL_stack_base + TOPMARK + 1;
		1880	int items = SP - arg; /* args without function object */
		1881	int ix = PL_op->op_private & OPpENTERSUB_SLF;
		1882	struct CoroSLF *slf = 0;
		1883
		1884	/* do a quick consistency check on the "function" object, and if it isn't */
		1885	/* for us, divert to the real entersub */
		1886	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1887	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1888
		1889	/* pop args */
		1890	SP = PL_stack_base + POPMARK;
		1891
		1892	if (!(PL_op->op_flags & OPf_STACKED))
		1893	{
		1894	/* ampersand-form of call, use @_ instead of stack */
		1895	AV *av = GvAV (PL_defgv);
		1896	arg = AvARRAY (av);
		1897	items = AvFILLp (av) + 1;
		1898	}
		1899
		1900	PUTBACK;
		1901
		1902	if (!ix)
		1903	{
		1904	slf = (struct CoroSLF *)CvSTART (GvCV (*sp));
		1905	ix = slf->prepare (aTHX_ arg, items);
		1906	}
		1907
		1908	switch (ix)
		1909	{
		1910	case CORO_SLF_SET_STACKLEVEL:
		1911	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1912	break;
		1913
		1914	case CORO_SLF_TRANSFER:
		1915	if (items != 2)
		1916	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1917
		1918	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1919	break;
		1920
		1921	case CORO_SLF_SCHEDULE:
		1922	prepare_schedule (aTHX_ &ta);
		1923	break;
		1924
		1925	case CORO_SLF_CEDE:
		1926	prepare_cede (aTHX_ &ta);
		1927	break;
		1928
		1929	case CORO_SLF_CEDE_NOTSELF:
		1930	prepare_cede_notself (aTHX_ &ta);
		1931	break;
		1932
		1933	default:
		1934	abort ();
		1935	}
		1936
		1937	do
		1938	TRANSFER (ta, 0);
		1939	while (slf && slf->check (aTHX));
		1940
		1941	SPAGAIN;
		1942
		1943	PUTBACK;
		1944	SLF_TAIL;
		1945	SPAGAIN;
		1946	RETURN;
		1947	}
		1948
		1949	static void
		1950	coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)
		1951	{
		1952	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1953
		1954	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
		1955	slf_cv = cv;
		1956
		1957	/* we patch the op, and then re-run the whole call */
		1958	/* we have to put the same argument on the stack for this to work */
		1959	/* and this will be done by pp_restore */
		1960	slf_restore.op_next = (OP *)&slf_restore;
		1961	slf_restore.op_type = OP_NULL;
		1962	slf_restore.op_ppaddr = pp_restore;
		1963	slf_restore.op_first = PL_op;
		1964
		1965	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1966	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1967
		1968	PL_op->op_ppaddr = pp_slf;
		1969	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
		1970
		1971	PL_op = (OP *)&slf_restore;
		1972	}
1649		1973
1650	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1974	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1651		1975
1652	PROTOTYPES: DISABLE	1976	PROTOTYPES: DISABLE
1653		1977
1654	BOOT:	1978	BOOT:
1655	{	1979	{
1656	#ifdef USE_ITHREADS	1980	#ifdef USE_ITHREADS
1657	MUTEX_INIT (&coro_mutex);	1981	MUTEX_INIT (&coro_lock);
		1982	# if CORO_PTHREAD
		1983	coro_thx = PERL_GET_CONTEXT;
		1984	# endif
1658	#endif	1985	#endif
1659	BOOT_PAGESIZE;	1986	BOOT_PAGESIZE;
1660		1987
1661	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1988	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1989	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
…		…
1684		2011
1685	coroapi.ver = CORO_API_VERSION;	2012	coroapi.ver = CORO_API_VERSION;
1686	coroapi.rev = CORO_API_REVISION;	2013	coroapi.rev = CORO_API_REVISION;
1687	coroapi.transfer = api_transfer;	2014	coroapi.transfer = api_transfer;
1688		2015
		2016	{
		2017	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		2018
		2019	if (!svp) croak ("Time::HiRes is required");
		2020	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		2021
		2022	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		2023	}
		2024
1689	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2025	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1690	}	2026	}
1691		2027
1692	SV *	2028	SV *
1693	new (char *klass, ...)	2029	new (char *klass, ...)
…		…
1716	av_push (coro->args, newSVsv (ST (i)));	2052	av_push (coro->args, newSVsv (ST (i)));
1717	}	2053	}
1718	OUTPUT:	2054	OUTPUT:
1719	RETVAL	2055	RETVAL
1720		2056
1721	# these not obviously related functions are all rolled into the same xs
1722	# function to increase chances that they all will call transfer with the same
1723	# stack offset
1724	void	2057	void
1725	_set_stacklevel (...)	2058	_set_stacklevel (...)
1726	ALIAS:	2059	ALIAS:
		2060	_set_stacklevel = CORO_SLF_SET_STACKLEVEL
1727	Coro::State::transfer = 1	2061	Coro::State::transfer = CORO_SLF_TRANSFER
1728	Coro::schedule = 2	2062	Coro::schedule = CORO_SLF_SCHEDULE
1729	Coro::cede = 3	2063	Coro::cede = CORO_SLF_CEDE
1730	Coro::cede_notself = 4	2064	Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
1731	CODE:	2065	CODE:
1732	{	2066	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1733	struct transfer_args ta;
1734
1735	PUTBACK;
1736	switch (ix)
1737	{
1738	case 0:
1739	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1740	ta.next = 0;
1741	break;
1742
1743	case 1:
1744	if (items != 2)
1745	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1746
1747	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1748	break;
1749
1750	case 2:
1751	prepare_schedule (aTHX_ &ta);
1752	break;
1753
1754	case 3:
1755	prepare_cede (aTHX_ &ta);
1756	break;
1757
1758	case 4:
1759	if (!prepare_cede_notself (aTHX_ &ta))
1760	XSRETURN_EMPTY;
1761
1762	break;
1763	}
1764	SPAGAIN;
1765
1766	BARRIER;
1767	PUTBACK;
1768	TRANSFER (ta, 0);
1769	SPAGAIN; /* might be the sp of a different coroutine now */
1770	/* be extra careful not to ever do anything after TRANSFER */
1771	}
1772		2067
1773	bool	2068	bool
1774	_destroy (SV *coro_sv)	2069	_destroy (SV *coro_sv)
1775	CODE:	2070	CODE:
1776	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2071	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1784	_exit (code);	2079	_exit (code);
1785		2080
1786	int	2081	int
1787	cctx_stacksize (int new_stacksize = 0)	2082	cctx_stacksize (int new_stacksize = 0)
1788	CODE:	2083	CODE:
1789	RETVAL = coro_stacksize;	2084	RETVAL = cctx_stacksize;
1790	if (new_stacksize)	2085	if (new_stacksize)
		2086	{
1791	coro_stacksize = new_stacksize;	2087	cctx_stacksize = new_stacksize;
		2088	++cctx_gen;
		2089	}
		2090	OUTPUT:
		2091	RETVAL
		2092
		2093	int
		2094	cctx_max_idle (int max_idle = 0)
		2095	CODE:
		2096	RETVAL = cctx_max_idle;
		2097	if (max_idle > 1)
		2098	cctx_max_idle = max_idle;
1792	OUTPUT:	2099	OUTPUT:
1793	RETVAL	2100	RETVAL
1794		2101
1795	int	2102	int
1796	cctx_count ()	2103	cctx_count ()
…		…
1874	RETVAL = boolSV (coro->flags & ix);	2181	RETVAL = boolSV (coro->flags & ix);
1875	OUTPUT:	2182	OUTPUT:
1876	RETVAL	2183	RETVAL
1877		2184
1878	void	2185	void
		2186	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2187	PROTOTYPE: $;$
		2188	CODE:
		2189	SvREFCNT_dec (self->throw);
		2190	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2191
		2192	void
1879	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2193	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2194	C_ARGS: aTHX_ coro, flags
1880		2195
1881	SV *	2196	SV *
1882	has_cctx (Coro::State coro)	2197	has_cctx (Coro::State coro)
1883	PROTOTYPE: $	2198	PROTOTYPE: $
1884	CODE:	2199	CODE:
…		…
1892	CODE:	2207	CODE:
1893	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2208	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894	OUTPUT:	2209	OUTPUT:
1895	RETVAL	2210	RETVAL
1896		2211
1897	IV	2212	UV
1898	rss (Coro::State coro)	2213	rss (Coro::State coro)
1899	PROTOTYPE: $	2214	PROTOTYPE: $
1900	ALIAS:	2215	ALIAS:
1901	usecount = 1	2216	usecount = 1
1902	CODE:	2217	CODE:
…		…
1913	CODE:	2228	CODE:
1914	struct coro *coro = SvSTATE (coro_current);	2229	struct coro *coro = SvSTATE (coro_current);
1915	coro->cctx->idle_sp = 0;	2230	coro->cctx->idle_sp = 0;
1916		2231
1917	void	2232	void
1918	throw (Coro::State self, SV *throw = &PL_sv_undef)
1919	PROTOTYPE: $;$
1920	CODE:
1921	SvREFCNT_dec (self->throw);
1922	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923
1924	void
1925	swap_defsv (Coro::State self)	2233	swap_defsv (Coro::State self)
1926	PROTOTYPE: $	2234	PROTOTYPE: $
1927	ALIAS:	2235	ALIAS:
1928	swap_defav = 1	2236	swap_defav = 1
1929	CODE:	2237	CODE:
…		…
1961		2269
1962	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2270	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1963	coro_ready[i] = newAV ();	2271	coro_ready[i] = newAV ();
1964		2272
1965	{	2273	{
1966	SV *sv = perl_get_sv ("Coro::API", TRUE);	2274	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1967	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1968		2275
1969	coroapi.schedule = api_schedule;	2276	coroapi.schedule = api_schedule;
1970	coroapi.cede = api_cede;	2277	coroapi.cede = api_cede;
1971	coroapi.cede_notself = api_cede_notself;	2278	coroapi.cede_notself = api_cede_notself;
1972	coroapi.ready = api_ready;	2279	coroapi.ready = api_ready;
1973	coroapi.is_ready = api_is_ready;	2280	coroapi.is_ready = api_is_ready;
1974	coroapi.nready = &coro_nready;	2281	coroapi.nready = coro_nready;
1975	coroapi.current = coro_current;	2282	coroapi.current = coro_current;
1976		2283
1977	GCoroAPI = &coroapi;	2284	GCoroAPI = &coroapi;
1978	sv_setiv (sv, (IV)&coroapi);	2285	sv_setiv (sv, (IV)&coroapi);
1979	SvREADONLY_on (sv);	2286	SvREADONLY_on (sv);
…		…
1983	void	2290	void
1984	_set_current (SV *current)	2291	_set_current (SV *current)
1985	PROTOTYPE: $	2292	PROTOTYPE: $
1986	CODE:	2293	CODE:
1987	SvREFCNT_dec (SvRV (coro_current));	2294	SvREFCNT_dec (SvRV (coro_current));
1988	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2295	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1989		2296
1990	void	2297	void
1991	_set_readyhook (SV *hook)	2298	_set_readyhook (SV *hook)
1992	PROTOTYPE: $	2299	PROTOTYPE: $
1993	CODE:	2300	CODE:
…		…
2020		2327
2021	SV *	2328	SV *
2022	ready (SV *self)	2329	ready (SV *self)
2023	PROTOTYPE: $	2330	PROTOTYPE: $
2024	CODE:	2331	CODE:
2025	RETVAL = boolSV (api_ready (self));	2332	RETVAL = boolSV (api_ready (aTHX_ self));
2026	OUTPUT:	2333	OUTPUT:
2027	RETVAL	2334	RETVAL
2028		2335
2029	int	2336	int
2030	nready (...)	2337	nready (...)
…		…
2053	SvREFCNT_dec (old);	2360	SvREFCNT_dec (old);
2054	croak ("\3async_pool terminate\2\n");	2361	croak ("\3async_pool terminate\2\n");
2055	}	2362	}
2056		2363
2057	SvREFCNT_dec (coro->saved_deffh);	2364	SvREFCNT_dec (coro->saved_deffh);
2058	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2365	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2059		2366
2060	hv_store (hv, "desc", sizeof ("desc") - 1,	2367	hv_store (hv, "desc", sizeof ("desc") - 1,
2061	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2368	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062		2369
2063	invoke_av = (AV *)SvRV (invoke);	2370	invoke_av = (AV *)SvRV (invoke);
…		…
2067		2374
2068	if (len > 0)	2375	if (len > 0)
2069	{	2376	{
2070	av_fill (defav, len - 1);	2377	av_fill (defav, len - 1);
2071	for (i = 0; i < len; ++i)	2378	for (i = 0; i < len; ++i)
2072	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2379	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2073	}	2380	}
2074		2381
2075	SvREFCNT_dec (invoke);	2382	SvREFCNT_dec (invoke);
2076	}	2383	}
2077		2384
…		…
2084	sv_setsv (cb, &PL_sv_undef);	2391	sv_setsv (cb, &PL_sv_undef);
2085		2392
2086	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2393	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087	coro->saved_deffh = 0;	2394	coro->saved_deffh = 0;
2088		2395
2089	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2396	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2090	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2397	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091	{	2398	{
2092	SV *old = PL_diehook;	2399	SV *old = PL_diehook;
2093	PL_diehook = 0;	2400	PL_diehook = 0;
2094	SvREFCNT_dec (old);	2401	SvREFCNT_dec (old);
…		…
2100	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2407	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101		2408
2102	coro->prio = 0;	2409	coro->prio = 0;
2103		2410
2104	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2411	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105	api_trace (coro_current, 0);	2412	api_trace (aTHX_ coro_current, 0);
2106		2413
2107	av_push (av_async_pool, newSVsv (coro_current));	2414	av_push (av_async_pool, newSVsv (coro_current));
2108	}	2415	}
2109		2416
2110	#if 0	2417	#if 0
…		…
2156	#endif	2463	#endif
2157		2464
2158		2465
2159	MODULE = Coro::State PACKAGE = Coro::AIO	2466	MODULE = Coro::State PACKAGE = Coro::AIO
2160		2467
2161	SV *	2468	void
2162	_get_state ()	2469	_get_state (SV *self)
2163	CODE:	2470	PPCODE:
2164	{	2471	{
2165	struct io_state *data;	2472	AV *defav = GvAV (PL_defgv);
2166		2473	AV *av = newAV ();
		2474	int i;
2167	RETVAL = newSV (sizeof (struct io_state));	2475	SV *data_sv = newSV (sizeof (struct io_state));
2168	data = (struct io_state *)SvPVX (RETVAL);	2476	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2169	SvCUR_set (RETVAL, sizeof (struct io_state));	2477	SvCUR_set (data_sv, sizeof (struct io_state));
2170	SvPOK_only (RETVAL);	2478	SvPOK_only (data_sv);
2171		2479
2172	data->errorno = errno;	2480	data->errorno = errno;
2173	data->laststype = PL_laststype;	2481	data->laststype = PL_laststype;
2174	data->laststatval = PL_laststatval;	2482	data->laststatval = PL_laststatval;
2175	data->statcache = PL_statcache;	2483	data->statcache = PL_statcache;
		2484
		2485	av_extend (av, AvFILLp (defav) + 1 + 1);
		2486
		2487	for (i = 0; i <= AvFILLp (defav); ++i)
		2488	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2489
		2490	av_push (av, data_sv);
		2491
		2492	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2493
		2494	api_ready (aTHX_ self);
2176	}	2495	}
2177	OUTPUT:
2178	RETVAL
2179		2496
2180	void	2497	void
2181	_set_state (char *data_)	2498	_set_state (SV *state)
2182	PROTOTYPE: $	2499	PROTOTYPE: $
2183	CODE:	2500	PPCODE:
2184	{	2501	{
2185	struct io_state *data = (void *)data_;	2502	AV *av = (AV *)SvRV (state);
		2503	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2504	int i;
2186		2505
2187	errno = data->errorno;	2506	errno = data->errorno;
2188	PL_laststype = data->laststype;	2507	PL_laststype = data->laststype;
2189	PL_laststatval = data->laststatval;	2508	PL_laststatval = data->laststatval;
2190	PL_statcache = data->statcache;	2509	PL_statcache = data->statcache;
		2510
		2511	EXTEND (SP, AvFILLp (av));
		2512	for (i = 0; i < AvFILLp (av); ++i)
		2513	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2191	}	2514	}
2192		2515
2193		2516
2194	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2517	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195		2518
…		…
2201	PROTOTYPE: @	2524	PROTOTYPE: @
2202	CODE:	2525	CODE:
2203	{	2526	{
2204	static int incede;	2527	static int incede;
2205		2528
2206	api_cede_notself ();	2529	api_cede_notself (aTHX);
2207		2530
2208	++incede;	2531	++incede;
2209	while (coro_nready >= incede && api_cede ())	2532	while (coro_nready >= incede && api_cede (aTHX))
2210	;	2533	;
2211		2534
2212	sv_setsv (sv_activity, &PL_sv_undef);	2535	sv_setsv (sv_activity, &PL_sv_undef);
2213	if (coro_nready >= incede)	2536	if (coro_nready >= incede)
2214	{	2537	{
…		…
2219	}	2542	}
2220		2543
2221	--incede;	2544	--incede;
2222	}	2545	}
2223		2546
		2547
		2548	MODULE = Coro::State PACKAGE = PerlIO::cede
		2549
		2550	BOOT:
		2551	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2552

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