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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.247 by root, Wed Sep 24 21:31:29 2008 UTC vs.
Revision 1.275 by root, Sat Nov 15 06:26:52 2008 UTC

…		…
46	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
47	#endif	47	#endif
48		48
49	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
50	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
51	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52	#else
53	# define REGISTER_STACK(cctx,start,end)
54	#endif	51	#endif
55		52
56	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
57	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
58		55
59	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
60	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
61	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
62	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
81	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
82	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
83	# endif	80	# endif
84	#endif	81	#endif
85		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
86	/* 5.8.8 */	93	/* 5.8.8 */
87	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
88	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
89	#endif	96	#endif
90	#ifndef newSV	97	#ifndef newSV
91	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
92	#endif	99	#endif
93		100
94	/* 5.11 */
95	#ifndef CxHASARGS
96	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
97	#endif
98
99	/* 5.8.7 */	101	/* 5.8.7 */
100	#ifndef SvRV_set	102	#ifndef SvRV_set
101	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
102	#endif	104	#endif
103		105
…		…
114	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
115	#endif	117	#endif
116		118
117	/* 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
118	* portable way as possible. */	120	* portable way as possible. */
119	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
120	#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
121		126
122	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
123		128
124	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
125	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
126	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
128	#else	133	#else
129	# define attribute(x)	134	# define attribute(x)
130	# define BARRIER
131	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
132	#endif	137	#endif
133		138
134	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
135	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
136		141
137	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
138		143
139	#include "CoroAPI.h"	144	#include "CoroAPI.h"
140		145
141	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
142	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
143	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
144	# 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
145	#else	155	#else
		156
146	# define LOCK (void)0	157	# define LOCK (void)0
147	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
148	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
149		166
150	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
151	struct io_state	168	struct io_state
152	{	169	{
		170	AV *res;
153	int errorno;	171	int errorno;
154	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
155	int laststatval;	173	int laststatval;
156	Stat_t statcache;	174	Stat_t statcache;
157	};	175	};
158		176
159	static double (*nvtime)(); /* so why doesn't it take void? */	177	static double (*nvtime)(); /* so why doesn't it take void? */
160		178
		179	static U32 cctx_gen;
161	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
162	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
163	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
164	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
165	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
166	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;
167		187
168	static GV *irsgv; /* $/ */	188	static GV *irsgv; /* $/ */
169	static GV *stdoutgv; /* *STDOUT */	189	static GV *stdoutgv; /* *STDOUT */
170	static SV *rv_diehook;	190	static SV *rv_diehook;
171	static SV *rv_warnhook;	191	static SV *rv_warnhook;
…		…
190	CC_TRACE_LINE = 0x10, /* trace each statement */	210	CC_TRACE_LINE = 0x10, /* trace each statement */
191	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,	211	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
192	};	212	};
193		213
194	/* this is a structure representing a c-level coroutine */	214	/* this is a structure representing a c-level coroutine */
195	typedef struct coro_cctx {	215	typedef struct coro_cctx
		216	{
196	struct coro_cctx *next;	217	struct coro_cctx *next;
197		218
198	/* the stack */	219	/* the stack */
199	void *sptr;	220	void *sptr;
200	size_t ssize;	221	size_t ssize;
…		…
203	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	224	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	225	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
205	JMPENV *top_env;	226	JMPENV *top_env;
206	coro_context cctx;	227	coro_context cctx;
207		228
		229	U32 gen;
208	#if CORO_USE_VALGRIND	230	#if CORO_USE_VALGRIND
209	int valgrind_id;	231	int valgrind_id;
210	#endif	232	#endif
211	unsigned char flags;	233	unsigned char flags;
212	} coro_cctx;	234	} coro_cctx;
…		…
217	CF_NEW = 0x0004, /* has never been switched to */	239	CF_NEW = 0x0004, /* has never been switched to */
218	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	240	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
219	};	241	};
220		242
221	/* the structure where most of the perl state is stored, overlaid on the cxstack */	243	/* the structure where most of the perl state is stored, overlaid on the cxstack */
222	typedef struct {	244	typedef struct
		245	{
223	SV *defsv;	246	SV *defsv;
224	AV *defav;	247	AV *defav;
225	SV *errsv;	248	SV *errsv;
226	SV *irsgv;	249	SV *irsgv;
227	#define VAR(name,type) type name;	250	#define VAR(name,type) type name;
…		…
231		254
232	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	255	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
233		256
234	/* this is a structure representing a perl-level coroutine */	257	/* this is a structure representing a perl-level coroutine */
235	struct coro {	258	struct coro {
236	/* the c coroutine allocated to this perl coroutine, if any */	259	/* the C coroutine allocated to this perl coroutine, if any */
237	coro_cctx *cctx;	260	coro_cctx *cctx;
238		261
239	/* process data */	262	/* process data */
		263	struct CoroSLF slf_frame; /* saved slf frame */
240	AV *mainstack;	264	AV *mainstack;
241	perl_slots *slot; /* basically the saved sp */	265	perl_slots *slot; /* basically the saved sp */
242		266
243	AV *args; /* data associated with this coroutine (initial args) */	267	AV *args; /* data associated with this coroutine (initial args) */
244	int refcnt; /* coroutines are refcounted, yes */	268	int refcnt; /* coroutines are refcounted, yes */
…		…
259	struct coro *next, *prev;	283	struct coro *next, *prev;
260	};	284	};
261		285
262	typedef struct coro *Coro__State;	286	typedef struct coro *Coro__State;
263	typedef struct coro *Coro__State_or_hashref;	287	typedef struct coro *Coro__State_or_hashref;
		288
		289	static struct CoroSLF slf_frame; /* the current slf frame */
264		290
265	/** Coro ********************************************************************/	291	/** Coro ********************************************************************/
266		292
267	#define PRIO_MAX 3	293	#define PRIO_MAX 3
268	#define PRIO_HIGH 1	294	#define PRIO_HIGH 1
…		…
272	#define PRIO_MIN -4	298	#define PRIO_MIN -4
273		299
274	/* for Coro.pm */	300	/* for Coro.pm */
275	static SV *coro_current;	301	static SV *coro_current;
276	static SV *coro_readyhook;	302	static SV *coro_readyhook;
277	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
278	static int coro_nready;
279	static struct coro *coro_first;	304	static struct coro *coro_first;
		305	#define coro_nready coroapi.nready
280		306
281	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
282		308
283	static SV *	309	static SV *
284	coro_get_sv (pTHX_ const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
…		…
324	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
325	#endif	351	#endif
326	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
327	--AvFILLp (padlist);	353	--AvFILLp (padlist);
328		354
329	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
330	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
331		357
332	return newpadlist;	358	return newpadlist;
333	}	359	}
334		360
…		…
377	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
378	0, 0, 0, 0,	404	0, 0, 0, 0,
379	coro_cv_free	405	coro_cv_free
380	};	406	};
381		407
382	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
383	SvMAGIC (sv) \	409	SvMAGIC (sv) \
384	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
385	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
386	: mg_find (sv, type) \	412	: mg_find (sv, type) \
387	: 0	413	: 0
388		414
389	#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)
390	#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)
391		417
392	static struct coro *	418	INLINE struct coro *
393	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
394	{	420	{
395	HV *stash;	421	HV *stash;
396	MAGIC *mg;	422	MAGIC *mg;
397		423
…		…
488	CvPADLIST (cv) = (AV *)POPs;	514	CvPADLIST (cv) = (AV *)POPs;
489	}	515	}
490		516
491	PUTBACK;	517	PUTBACK;
492	}	518	}
		519
		520	slf_frame = c->slf_frame;
493	}	521	}
494		522
495	static void	523	static void
496	save_perl (pTHX_ Coro__State c)	524	save_perl (pTHX_ Coro__State c)
497	{	525	{
		526	c->slf_frame = slf_frame;
		527
498	{	528	{
499	dSP;	529	dSP;
500	I32 cxix = cxstack_ix;	530	I32 cxix = cxstack_ix;
501	PERL_CONTEXT *ccstk = cxstack;	531	PERL_CONTEXT *ccstk = cxstack;
502	PERL_SI *top_si = PL_curstackinfo;	532	PERL_SI *top_si = PL_curstackinfo;
…		…
569	#undef VAR	599	#undef VAR
570	}	600	}
571	}	601	}
572		602
573	/*	603	/*
574	* allocate various perl stacks. This is an exact copy	604	* allocate various perl stacks. This is almost an exact copy
575	* of perl.c:init_stacks, except that it uses less memory	605	* of perl.c:init_stacks, except that it uses less memory
576	* on the (sometimes correct) assumption that coroutines do	606	* on the (sometimes correct) assumption that coroutines do
577	* not usually need a lot of stackspace.	607	* not usually need a lot of stackspace.
578	*/	608	*/
579	#if CORO_PREFER_PERL_FUNCTIONS	609	#if CORO_PREFER_PERL_FUNCTIONS
…		…
622		652
623	/*	653	/*
624	* destroy the stacks, the callchain etc...	654	* destroy the stacks, the callchain etc...
625	*/	655	*/
626	static void	656	static void
627	coro_destroy_stacks (pTHX)	657	coro_destruct_stacks (pTHX)
628	{	658	{
629	while (PL_curstackinfo->si_next)	659	while (PL_curstackinfo->si_next)
630	PL_curstackinfo = PL_curstackinfo->si_next;	660	PL_curstackinfo = PL_curstackinfo->si_next;
631		661
632	while (PL_curstackinfo)	662	while (PL_curstackinfo)
…		…
781		811
782	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
783	}	813	}
784		814
785	static void	815	static void
		816	prepare_nop (aTHX_ struct coro_transfer_args *ta)
		817	{
		818	/* kind of mega-hacky, but works */
		819	ta->next = ta->prev = (struct coro *)ta;
		820	}
		821
		822	static int
		823	slf_check_nop (aTHX)
		824	{
		825	return 0;
		826	}
		827
		828	static void
786	coro_setup (pTHX_ struct coro *coro)	829	coro_setup (pTHX_ struct coro *coro)
787	{	830	{
788	/*	831	/*
789	* emulate part of the perl startup here.	832	* emulate part of the perl startup here.
790	*/	833	*/
…		…
810	GvSV (PL_defgv) = newSV (0);	853	GvSV (PL_defgv) = newSV (0);
811	GvAV (PL_defgv) = coro->args; coro->args = 0;	854	GvAV (PL_defgv) = coro->args; coro->args = 0;
812	GvSV (PL_errgv) = newSV (0);	855	GvSV (PL_errgv) = newSV (0);
813	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	856	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
814	PL_rs = newSVsv (GvSV (irsgv));	857	PL_rs = newSVsv (GvSV (irsgv));
815	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	858	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
816		859
817	{	860	{
818	dSP;	861	dSP;
819	LOGOP myop;	862	UNOP myop;
820		863
821	Zero (&myop, 1, LOGOP);	864	Zero (&myop, 1, UNOP);
822	myop.op_next = Nullop;	865	myop.op_next = Nullop;
823	myop.op_flags = OPf_WANT_VOID;	866	myop.op_flags = OPf_WANT_VOID;
824		867
825	PUSHMARK (SP);	868	PUSHMARK (SP);
826	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	869	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
829	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	872	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
830	SPAGAIN;	873	SPAGAIN;
831	}	874	}
832		875
833	/* this newly created coroutine might be run on an existing cctx which most	876	/* this newly created coroutine might be run on an existing cctx which most
834	* likely was suspended in set_stacklevel, called from entersub.	877	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
835	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
836	* so we ENTER here for symmetry
837	*/	878	*/
838	ENTER;	879	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		880	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
839	}	881	}
840		882
841	static void	883	static void
842	coro_destroy (pTHX_ struct coro *coro)	884	coro_destruct (pTHX_ struct coro *coro)
843	{	885	{
844	if (!IN_DESTRUCT)	886	if (!IN_DESTRUCT)
845	{	887	{
846	/* restore all saved variables and stuff */	888	/* restore all saved variables and stuff */
847	LEAVE_SCOPE (0);	889	LEAVE_SCOPE (0);
…		…
869	SvREFCNT_dec (PL_warnhook);	911	SvREFCNT_dec (PL_warnhook);
870		912
871	SvREFCNT_dec (coro->saved_deffh);	913	SvREFCNT_dec (coro->saved_deffh);
872	SvREFCNT_dec (coro->throw);	914	SvREFCNT_dec (coro->throw);
873		915
874	coro_destroy_stacks (aTHX);	916	coro_destruct_stacks (aTHX);
875	}	917	}
876		918
877	static void	919	INLINE void
878	free_coro_mortal (pTHX)	920	free_coro_mortal (pTHX)
879	{	921	{
880	if (expect_true (coro_mortal))	922	if (expect_true (coro_mortal))
881	{	923	{
882	SvREFCNT_dec (coro_mortal);	924	SvREFCNT_dec (coro_mortal);
…		…
916	: cx->blk_gimme == G_SCALAR ? bot + 1	958	: cx->blk_gimme == G_SCALAR ? bot + 1
917	: bot;	959	: bot;
918		960
919	av_extend (av, top - bot);	961	av_extend (av, top - bot);
920	while (bot < top)	962	while (bot < top)
921	av_push (av, SvREFCNT_inc (*bot++));	963	av_push (av, SvREFCNT_inc_NN (*bot++));
922		964
923	PL_runops = RUNOPS_DEFAULT;	965	PL_runops = RUNOPS_DEFAULT;
924	ENTER;	966	ENTER;
925	SAVETMPS;	967	SAVETMPS;
926	EXTEND (SP, 3);	968	EXTEND (SP, 3);
…		…
1006		1048
1007	TAINT_NOT;	1049	TAINT_NOT;
1008	return 0;	1050	return 0;
1009	}	1051	}
1010		1052
		1053	static void
		1054	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
		1055	{
		1056	ta->prev = (struct coro *)cctx;
		1057	ta->next = 0;
		1058	}
		1059
1011	/* inject a fake call to Coro::State::_cctx_init into the execution */	1060	/* inject a fake call to Coro::State::_cctx_init into the execution */
1012	/* _cctx_init should be careful, as it could be called at almost any time */	1061	/* _cctx_init should be careful, as it could be called at almost any time */
1013	/* during execution of a perl program */	1062	/* during execution of a perl program */
		1063	/* also initialises PL_top_env */
1014	static void NOINLINE	1064	static void NOINLINE
1015	cctx_prepare (pTHX_ coro_cctx *cctx)	1065	cctx_prepare (pTHX_ coro_cctx *cctx)
1016	{	1066	{
1017	dSP;	1067	dSP;
1018	LOGOP myop;	1068	UNOP myop;
1019		1069
1020	PL_top_env = &PL_start_env;	1070	PL_top_env = &PL_start_env;
1021		1071
1022	if (cctx->flags & CC_TRACE)	1072	if (cctx->flags & CC_TRACE)
1023	PL_runops = runops_trace;	1073	PL_runops = runops_trace;
1024		1074
1025	Zero (&myop, 1, LOGOP);	1075	Zero (&myop, 1, UNOP);
1026	myop.op_next = PL_op;	1076	myop.op_next = PL_op;
1027	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1077	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1028		1078
1029	PUSHMARK (SP);	1079	PUSHMARK (SP);
1030	EXTEND (SP, 2);	1080	EXTEND (SP, 2);
1031	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1081	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1032	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1082	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1033	PUTBACK;	1083	PUTBACK;
1034	PL_op = (OP *)&myop;	1084	PL_op = (OP *)&myop;
1035	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1085	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1036	SPAGAIN;	1086	SPAGAIN;
1037	}	1087	}
1038		1088
		1089	/* the tail of transfer: execute stuff we can only do after a transfer */
		1090	INLINE void
		1091	transfer_tail (pTHX)
		1092	{
		1093	struct coro *next = (struct coro *)transfer_next;
		1094	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1095	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1096
		1097	free_coro_mortal (aTHX);
		1098	UNLOCK;
		1099
		1100	if (expect_false (next->throw))
		1101	{
		1102	SV *exception = sv_2mortal (next->throw);
		1103
		1104	next->throw = 0;
		1105	sv_setsv (ERRSV, exception);
		1106	croak (0);
		1107	}
		1108	}
		1109
1039	/*	1110	/*
1040	* this is a _very_ stripped down perl interpreter ;)	1111	* this is a _very_ stripped down perl interpreter ;)
1041	*/	1112	*/
1042	static void	1113	static void
1043	cctx_run (void *arg)	1114	cctx_run (void *arg)
1044	{	1115	{
		1116	#ifdef USE_ITHREADS
		1117	# if CORO_PTHREAD
		1118	PERL_SET_CONTEXT (coro_thx);
		1119	# endif
		1120	#endif
		1121	{
1045	dTHX;	1122	dTHX;
1046		1123
1047	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1124	/* normally we would need to skip the entersub here */
1048	UNLOCK;	1125	/* not doing so will re-execute it, which is exactly what we want */
1049
1050	/* we now skip the entersub that lead to transfer() */
1051	PL_op = PL_op->op_next;	1126	/* PL_nop = PL_nop->op_next */
1052		1127
1053	/* inject a fake subroutine call to cctx_init */	1128	/* inject a fake subroutine call to cctx_init */
1054	cctx_prepare (aTHX_ (coro_cctx *)arg);	1129	cctx_prepare (aTHX_ (coro_cctx *)arg);
1055		1130
		1131	/* cctx_run is the alternative tail of transfer() */
		1132	/* TODO: throwing an exception here might be deadly, VERIFY */
		1133	transfer_tail (aTHX);
		1134
1056	/* somebody or something will hit me for both perl_run and PL_restartop */	1135	/* somebody or something will hit me for both perl_run and PL_restartop */
1057	PL_restartop = PL_op;	1136	PL_restartop = PL_op;
1058	perl_run (PL_curinterp);	1137	perl_run (PL_curinterp);
1059		1138
1060	/*	1139	/*
1061	* If perl-run returns we assume exit() was being called or the coro	1140	* If perl-run returns we assume exit() was being called or the coro
1062	* fell off the end, which seems to be the only valid (non-bug)	1141	* fell off the end, which seems to be the only valid (non-bug)
1063	* reason for perl_run to return. We try to exit by jumping to the	1142	* reason for perl_run to return. We try to exit by jumping to the
1064	* bootstrap-time "top" top_env, as we cannot restore the "main"	1143	* bootstrap-time "top" top_env, as we cannot restore the "main"
1065	* coroutine as Coro has no such concept	1144	* coroutine as Coro has no such concept
1066	*/	1145	*/
1067	PL_top_env = main_top_env;	1146	PL_top_env = main_top_env;
1068	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1147	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1148	}
1069	}	1149	}
1070		1150
1071	static coro_cctx *	1151	static coro_cctx *
1072	cctx_new ()	1152	cctx_new ()
1073	{	1153	{
1074	coro_cctx *cctx;	1154	coro_cctx *cctx;
		1155
		1156	++cctx_count;
		1157	New (0, cctx, 1, coro_cctx);
		1158
		1159	cctx->gen = cctx_gen;
		1160	cctx->flags = 0;
		1161	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1162
		1163	return cctx;
		1164	}
		1165
		1166	/* create a new cctx only suitable as source */
		1167	static coro_cctx *
		1168	cctx_new_empty ()
		1169	{
		1170	coro_cctx *cctx = cctx_new ();
		1171
		1172	cctx->sptr = 0;
		1173	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1174
		1175	return cctx;
		1176	}
		1177
		1178	/* create a new cctx suitable as destination/running a perl interpreter */
		1179	static coro_cctx *
		1180	cctx_new_run ()
		1181	{
		1182	coro_cctx *cctx = cctx_new ();
1075	void *stack_start;	1183	void *stack_start;
1076	size_t stack_size;	1184	size_t stack_size;
1077		1185
1078	++cctx_count;
1079
1080	Newz (0, cctx, 1, coro_cctx);
1081
1082	#if HAVE_MMAP	1186	#if HAVE_MMAP
1083	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1187	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1084	/* mmap supposedly does allocate-on-write for us */	1188	/* mmap supposedly does allocate-on-write for us */
1085	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1189	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1086		1190
1087	if (cctx->sptr != (void *)-1)	1191	if (cctx->sptr != (void *)-1)
1088	{	1192	{
1089	# if CORO_STACKGUARD	1193	#if CORO_STACKGUARD
1090	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1194	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1091	# endif	1195	#endif
1092	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1196	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1093	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1197	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1094	cctx->flags |= CC_MAPPED;	1198	cctx->flags |= CC_MAPPED;
1095	}	1199	}
1096	else	1200	else
1097	#endif	1201	#endif
1098	{	1202	{
1099	cctx->ssize = coro_stacksize * (long)sizeof (long);	1203	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1100	New (0, cctx->sptr, coro_stacksize, long);	1204	New (0, cctx->sptr, cctx_stacksize, long);
1101		1205
1102	if (!cctx->sptr)	1206	if (!cctx->sptr)
1103	{	1207	{
1104	perror ("FATAL: unable to allocate stack for coroutine");	1208	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1105	_exit (EXIT_FAILURE);	1209	_exit (EXIT_FAILURE);
1106	}	1210	}
1107		1211
1108	stack_start = cctx->sptr;	1212	stack_start = cctx->sptr;
1109	stack_size = cctx->ssize;	1213	stack_size = cctx->ssize;
1110	}	1214	}
1111		1215
1112	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1216	#if CORO_USE_VALGRIND
		1217	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1218	#endif
		1219
1113	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1220	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1114		1221
1115	return cctx;	1222	return cctx;
1116	}	1223	}
1117		1224
…		…
1120	{	1227	{
1121	if (!cctx)	1228	if (!cctx)
1122	return;	1229	return;
1123		1230
1124	--cctx_count;	1231	--cctx_count;
		1232	coro_destroy (&cctx->cctx);
1125		1233
		1234	/* coro_transfer creates new, empty cctx's */
		1235	if (cctx->sptr)
		1236	{
1126	#if CORO_USE_VALGRIND	1237	#if CORO_USE_VALGRIND
1127	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1238	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1128	#endif	1239	#endif
1129		1240
1130	#if HAVE_MMAP	1241	#if HAVE_MMAP
1131	if (cctx->flags & CC_MAPPED)	1242	if (cctx->flags & CC_MAPPED)
1132	munmap (cctx->sptr, cctx->ssize);	1243	munmap (cctx->sptr, cctx->ssize);
1133	else	1244	else
1134	#endif	1245	#endif
1135	Safefree (cctx->sptr);	1246	Safefree (cctx->sptr);
		1247	}
1136		1248
1137	Safefree (cctx);	1249	Safefree (cctx);
1138	}	1250	}
1139		1251
1140	/* wether this cctx should be destructed */	1252	/* wether this cctx should be destructed */
1141	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1253	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1142		1254
1143	static coro_cctx *	1255	static coro_cctx *
1144	cctx_get (pTHX)	1256	cctx_get (pTHX)
1145	{	1257	{
1146	while (expect_true (cctx_first))	1258	while (expect_true (cctx_first))
…		…
1153	return cctx;	1265	return cctx;
1154		1266
1155	cctx_destroy (cctx);	1267	cctx_destroy (cctx);
1156	}	1268	}
1157		1269
1158	return cctx_new ();	1270	return cctx_new_run ();
1159	}	1271	}
1160		1272
1161	static void	1273	static void
1162	cctx_put (coro_cctx *cctx)	1274	cctx_put (coro_cctx *cctx)
1163	{	1275	{
		1276	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1277
1164	/* free another cctx if overlimit */	1278	/* free another cctx if overlimit */
1165	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1279	if (expect_false (cctx_idle >= cctx_max_idle))
1166	{	1280	{
1167	coro_cctx *first = cctx_first;	1281	coro_cctx *first = cctx_first;
1168	cctx_first = first->next;	1282	cctx_first = first->next;
1169	--cctx_idle;	1283	--cctx_idle;
1170		1284
…		…
1182	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1296	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1183	{	1297	{
1184	if (expect_true (prev != next))	1298	if (expect_true (prev != next))
1185	{	1299	{
1186	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1300	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1187	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1301	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1188		1302
1189	if (expect_false (next->flags & CF_RUNNING))	1303	if (expect_false (next->flags & CF_RUNNING))
1190	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1304	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1191		1305
1192	if (expect_false (next->flags & CF_DESTROYED))	1306	if (expect_false (next->flags & CF_DESTROYED))
1193	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1307	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1194		1308
1195	#if !PERL_VERSION_ATLEAST (5,10,0)	1309	#if !PERL_VERSION_ATLEAST (5,10,0)
1196	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1310	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1197	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1311	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1198	#endif	1312	#endif
1199	}	1313	}
1200	}	1314	}
1201		1315
1202	/* always use the TRANSFER macro */	1316	/* always use the TRANSFER macro */
1203	static void NOINLINE	1317	static void NOINLINE
1204	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1318	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1205	{	1319	{
1206	dSTACKLEVEL;	1320	dSTACKLEVEL;
1207	static volatile int has_throw;
1208		1321
1209	/* sometimes transfer is only called to set idle_sp */	1322	/* sometimes transfer is only called to set idle_sp */
1210	if (expect_false (!next))	1323	if (expect_false (!next))
1211	{	1324	{
1212	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1325	((coro_cctx *)prev)->idle_sp = stacklevel;
1213	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1326	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1214	}	1327	}
1215	else if (expect_true (prev != next))	1328	else if (expect_true (prev != next))
1216	{	1329	{
1217	coro_cctx *prev__cctx;	1330	coro_cctx *prev__cctx;
1218		1331
1219	if (expect_false (prev->flags & CF_NEW))	1332	if (expect_false (prev->flags & CF_NEW))
1220	{	1333	{
1221	/* create a new empty context */	1334	/* create a new empty/source context */
1222	Newz (0, prev->cctx, 1, coro_cctx);	1335	prev->cctx = cctx_new_empty ();
1223	prev->flags &= ~CF_NEW;	1336	prev->flags &= ~CF_NEW;
1224	prev->flags |= CF_RUNNING;	1337	prev->flags |= CF_RUNNING;
1225	}	1338	}
1226		1339
1227	prev->flags &= ~CF_RUNNING;	1340	prev->flags &= ~CF_RUNNING;
…		…
1242	else	1355	else
1243	load_perl (aTHX_ next);	1356	load_perl (aTHX_ next);
1244		1357
1245	prev__cctx = prev->cctx;	1358	prev__cctx = prev->cctx;
1246		1359
1247	/* possibly "free" the cctx */	1360	/* possibly untie and reuse the cctx */
1248	if (expect_true (	1361	if (expect_true (
1249	prev__cctx->idle_sp == STACKLEVEL	1362	prev__cctx->idle_sp == stacklevel
1250	&& !(prev__cctx->flags & CC_TRACE)	1363	&& !(prev__cctx->flags & CC_TRACE)
1251	&& !force_cctx	1364	&& !force_cctx
1252	))	1365	))
1253	{	1366	{
1254	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1367	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1255	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1368	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1256		1369
1257	prev->cctx = 0;	1370	prev->cctx = 0;
1258		1371
1259	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1372	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1260	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1373	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1268	++next->usecount;	1381	++next->usecount;
1269		1382
1270	if (expect_true (!next->cctx))	1383	if (expect_true (!next->cctx))
1271	next->cctx = cctx_get (aTHX);	1384	next->cctx = cctx_get (aTHX);
1272		1385
1273	has_throw = !!next->throw;	1386	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1387	transfer_next = next;
1274		1388
1275	if (expect_false (prev__cctx != next->cctx))	1389	if (expect_false (prev__cctx != next->cctx))
1276	{	1390	{
1277	prev__cctx->top_env = PL_top_env;	1391	prev__cctx->top_env = PL_top_env;
1278	PL_top_env = next->cctx->top_env;	1392	PL_top_env = next->cctx->top_env;
1279	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1393	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1280	}	1394	}
1281		1395
1282	free_coro_mortal (aTHX);	1396	transfer_tail (aTHX);
1283	UNLOCK;
1284
1285	if (expect_false (has_throw))
1286	{
1287	struct coro *coro = SvSTATE (coro_current);
1288
1289	if (coro->throw)
1290	{
1291	SV *exception = coro->throw;
1292	coro->throw = 0;
1293	sv_setsv (ERRSV, exception);
1294	croak (0);
1295	}
1296	}
1297	}	1397	}
1298	}	1398	}
1299
1300	struct transfer_args
1301	{
1302	struct coro *prev, *next;
1303	};
1304		1399
1305	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1400	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1306	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1401	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1307		1402
1308	/** high level stuff ********************************************************/	1403	/** high level stuff ********************************************************/
…		…
1328		1423
1329	if (coro->mainstack && coro->mainstack != main_mainstack)	1424	if (coro->mainstack && coro->mainstack != main_mainstack)
1330	{	1425	{
1331	struct coro temp;	1426	struct coro temp;
1332		1427
1333	if (coro->flags & CF_RUNNING)	1428	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1334	croak ("FATAL: tried to destroy currently running coroutine");
1335		1429
1336	save_perl (aTHX_ &temp);	1430	save_perl (aTHX_ &temp);
1337	load_perl (aTHX_ coro);	1431	load_perl (aTHX_ coro);
1338		1432
1339	coro_destroy (aTHX_ coro);	1433	coro_destruct (aTHX_ coro);
1340		1434
1341	load_perl (aTHX_ &temp);	1435	load_perl (aTHX_ &temp);
1342		1436
1343	coro->slot = 0;	1437	coro->slot = 0;
1344	}	1438	}
…		…
1390	# define MGf_DUP 0	1484	# define MGf_DUP 0
1391	#endif	1485	#endif
1392	};	1486	};
1393		1487
1394	static void	1488	static void
1395	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1489	prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1396	{	1490	{
1397	ta->prev = SvSTATE (prev_sv);	1491	ta->prev = SvSTATE (prev_sv);
1398	ta->next = SvSTATE (next_sv);	1492	ta->next = SvSTATE (next_sv);
1399	TRANSFER_CHECK (*ta);	1493	TRANSFER_CHECK (*ta);
1400	}	1494	}
1401		1495
1402	static void	1496	static void
1403	api_transfer (SV *prev_sv, SV *next_sv)	1497	api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1404	{	1498	{
1405	dTHX;
1406	struct transfer_args ta;	1499	struct coro_transfer_args ta;
1407		1500
1408	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1501	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1409	TRANSFER (ta, 1);	1502	TRANSFER (ta, 1);
1410	}	1503	}
1411		1504
…		…
1428		1521
1429	return 0;	1522	return 0;
1430	}	1523	}
1431		1524
1432	static int	1525	static int
1433	api_ready (SV *coro_sv)	1526	api_ready (pTHX_ SV *coro_sv)
1434	{	1527	{
1435	dTHX;
1436	struct coro *coro;	1528	struct coro *coro;
1437	SV *sv_hook;	1529	SV *sv_hook;
1438	void (*xs_hook)(void);	1530	void (*xs_hook)(void);
1439		1531
1440	if (SvROK (coro_sv))	1532	if (SvROK (coro_sv))
…		…
1450	LOCK;	1542	LOCK;
1451		1543
1452	sv_hook = coro_nready ? 0 : coro_readyhook;	1544	sv_hook = coro_nready ? 0 : coro_readyhook;
1453	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1545	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1454		1546
1455	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1547	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1456	++coro_nready;	1548	++coro_nready;
1457		1549
1458	UNLOCK;	1550	UNLOCK;
1459		1551
1460	if (sv_hook)	1552	if (sv_hook)
…		…
1478		1570
1479	return 1;	1571	return 1;
1480	}	1572	}
1481		1573
1482	static int	1574	static int
1483	api_is_ready (SV *coro_sv)	1575	api_is_ready (pTHX_ SV *coro_sv)
1484	{	1576	{
1485	dTHX;
1486	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1577	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1487	}	1578	}
1488		1579
1489	static void	1580	INLINE void
1490	prepare_schedule (pTHX_ struct transfer_args *ta)	1581	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1491	{	1582	{
1492	SV *prev_sv, *next_sv;	1583	SV *prev_sv, *next_sv;
1493		1584
1494	for (;;)	1585	for (;;)
1495	{	1586	{
…		…
1520	/* cannot transfer to destroyed coros, skip and look for next */	1611	/* cannot transfer to destroyed coros, skip and look for next */
1521	if (expect_false (ta->next->flags & CF_DESTROYED))	1612	if (expect_false (ta->next->flags & CF_DESTROYED))
1522	{	1613	{
1523	UNLOCK;	1614	UNLOCK;
1524	SvREFCNT_dec (next_sv);	1615	SvREFCNT_dec (next_sv);
1525	/* coro_nready is already taken care of by destroy */	1616	/* coro_nready has already been taken care of by destroy */
1526	continue;	1617	continue;
1527	}	1618	}
1528		1619
1529	--coro_nready;	1620	--coro_nready;
1530	UNLOCK;	1621	UNLOCK;
…		…
1533		1624
1534	/* free this only after the transfer */	1625	/* free this only after the transfer */
1535	prev_sv = SvRV (coro_current);	1626	prev_sv = SvRV (coro_current);
1536	ta->prev = SvSTATE (prev_sv);	1627	ta->prev = SvSTATE (prev_sv);
1537	TRANSFER_CHECK (*ta);	1628	TRANSFER_CHECK (*ta);
1538	assert (ta->next->flags & CF_READY);	1629	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1539	ta->next->flags &= ~CF_READY;	1630	ta->next->flags &= ~CF_READY;
1540	SvRV_set (coro_current, next_sv);	1631	SvRV_set (coro_current, next_sv);
1541		1632
1542	LOCK;	1633	LOCK;
1543	free_coro_mortal (aTHX);	1634	free_coro_mortal (aTHX);
1544	coro_mortal = prev_sv;	1635	coro_mortal = prev_sv;
1545	UNLOCK;	1636	UNLOCK;
1546	}	1637	}
1547		1638
1548	static void	1639	INLINE void
1549	prepare_cede (pTHX_ struct transfer_args *ta)	1640	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1550	{	1641	{
1551	api_ready (coro_current);	1642	api_ready (aTHX_ coro_current);
1552	prepare_schedule (aTHX_ ta);	1643	prepare_schedule (aTHX_ ta);
1553	}	1644	}
1554		1645
		1646	INLINE void
		1647	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1648	{
		1649	SV *prev = SvRV (coro_current);
		1650
		1651	if (coro_nready)
		1652	{
		1653	prepare_schedule (aTHX_ ta);
		1654	api_ready (aTHX_ prev);
		1655	}
		1656	else
		1657	prepare_nop (aTHX_ ta);
		1658	}
		1659
		1660	static void
		1661	api_schedule (pTHX)
		1662	{
		1663	struct coro_transfer_args ta;
		1664
		1665	prepare_schedule (aTHX_ &ta);
		1666	TRANSFER (ta, 1);
		1667	}
		1668
1555	static int	1669	static int
1556	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1670	api_cede (pTHX)
1557	{	1671	{
1558	if (coro_nready)	1672	struct coro_transfer_args ta;
1559	{	1673
1560	SV *prev = SvRV (coro_current);
1561	prepare_schedule (aTHX_ ta);	1674	prepare_cede (aTHX_ &ta);
1562	api_ready (prev);	1675
		1676	if (expect_true (ta.prev != ta.next))
		1677	{
		1678	TRANSFER (ta, 1);
1563	return 1;	1679	return 1;
1564	}	1680	}
1565	else	1681	else
1566	return 0;	1682	return 0;
1567	}	1683	}
1568		1684
1569	static void
1570	api_schedule (void)
1571	{
1572	dTHX;
1573	struct transfer_args ta;
1574
1575	prepare_schedule (aTHX_ &ta);
1576	TRANSFER (ta, 1);
1577	}
1578
1579	static int	1685	static int
1580	api_cede (void)	1686	api_cede_notself (pTHX)
1581	{	1687	{
1582	dTHX;	1688	if (coro_nready)
		1689	{
1583	struct transfer_args ta;	1690	struct coro_transfer_args ta;
1584		1691
1585	prepare_cede (aTHX_ &ta);	1692	prepare_cede_notself (aTHX_ &ta);
1586
1587	if (expect_true (ta.prev != ta.next))
1588	{
1589	TRANSFER (ta, 1);	1693	TRANSFER (ta, 1);
1590	return 1;	1694	return 1;
1591	}	1695	}
1592	else	1696	else
1593	return 0;	1697	return 0;
1594	}	1698	}
1595		1699
1596	static int	1700	static void
1597	api_cede_notself (void)
1598	{
1599	dTHX;
1600	struct transfer_args ta;
1601
1602	if (prepare_cede_notself (aTHX_ &ta))
1603	{
1604	TRANSFER (ta, 1);
1605	return 1;
1606	}
1607	else
1608	return 0;
1609	}
1610
1611	static void
1612	api_trace (SV *coro_sv, int flags)	1701	api_trace (pTHX_ SV *coro_sv, int flags)
1613	{	1702	{
1614	dTHX;
1615	struct coro *coro = SvSTATE (coro_sv);	1703	struct coro *coro = SvSTATE (coro_sv);
1616		1704
1617	if (flags & CC_TRACE)	1705	if (flags & CC_TRACE)
1618	{	1706	{
1619	if (!coro->cctx)	1707	if (!coro->cctx)
1620	coro->cctx = cctx_new ();	1708	coro->cctx = cctx_new_run ();
1621	else if (!(coro->cctx->flags & CC_TRACE))	1709	else if (!(coro->cctx->flags & CC_TRACE))
1622	croak ("cannot enable tracing on coroutine with custom stack");	1710	croak ("cannot enable tracing on coroutine with custom stack,");
1623		1711
1624	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1712	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1625	}	1713	}
1626	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1714	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1627	{	1715	{
…		…
1632	else	1720	else
1633	coro->slot->runops = RUNOPS_DEFAULT;	1721	coro->slot->runops = RUNOPS_DEFAULT;
1634	}	1722	}
1635	}	1723	}
1636		1724
		1725	#if 0
1637	static int	1726	static int
1638	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1727	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1639	{	1728	{
1640	AV *padlist;	1729	AV *padlist;
1641	AV *av = (AV *)mg->mg_obj;	1730	AV *av = (AV *)mg->mg_obj;
…		…
1647		1736
1648	static MGVTBL coro_gensub_vtbl = {	1737	static MGVTBL coro_gensub_vtbl = {
1649	0, 0, 0, 0,	1738	0, 0, 0, 0,
1650	coro_gensub_free	1739	coro_gensub_free
1651	};	1740	};
		1741	#endif
1652		1742
1653	/*****************************************************************************/	1743	/*****************************************************************************/
1654	/* PerlIO::cede */	1744	/* PerlIO::cede */
1655		1745
1656	typedef struct	1746	typedef struct
…		…
1684	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1774	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1685	double now = nvtime ();	1775	double now = nvtime ();
1686		1776
1687	if (now >= self->next)	1777	if (now >= self->next)
1688	{	1778	{
1689	api_cede ();	1779	api_cede (aTHX);
1690	self->next = now + self->every;	1780	self->next = now + self->every;
1691	}	1781	}
1692		1782
1693	return PerlIOBuf_flush (f);	1783	return PerlIOBuf_flush (aTHX_ f);
1694	}	1784	}
1695		1785
1696	static PerlIO_funcs PerlIO_cede =	1786	static PerlIO_funcs PerlIO_cede =
1697	{	1787	{
1698	sizeof(PerlIO_funcs),	1788	sizeof(PerlIO_funcs),
…		…
1723	PerlIOBuf_get_ptr,	1813	PerlIOBuf_get_ptr,
1724	PerlIOBuf_get_cnt,	1814	PerlIOBuf_get_cnt,
1725	PerlIOBuf_set_ptrcnt,	1815	PerlIOBuf_set_ptrcnt,
1726	};	1816	};
1727		1817
		1818	/*****************************************************************************/
		1819
		1820	static const CV *slf_cv; /* for quick consistency check */
		1821
		1822	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1823	static SV *slf_arg0;
		1824	static SV *slf_arg1;
		1825	static SV *slf_arg2;
		1826
		1827	/* this restores the stack in the case we patched the entersub, to */
		1828	/* recreate the stack frame as perl will on following calls */
		1829	/* since entersub cleared the stack */
		1830	static OP *
		1831	pp_restore (pTHX)
		1832	{
		1833	dSP;
		1834
		1835	PUSHMARK (SP);
		1836
		1837	EXTEND (SP, 3);
		1838	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1839	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1840	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
		1841	PUSHs ((SV *)CvGV (slf_cv));
		1842
		1843	RETURNOP (slf_restore.op_first);
		1844	}
		1845
		1846	static void
		1847	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1848	{
		1849	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1850	}
		1851
		1852	static void
		1853	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items)
		1854	{
		1855	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1856
		1857	frame->prepare = slf_prepare_set_stacklevel;
		1858	frame->check = slf_check_nop;
		1859	frame->data = (void *)SvIV (arg [0]);
		1860	}
		1861
		1862	static void
		1863	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1864	{
		1865	SV **arg = (SV **)slf_frame.data;
		1866
		1867	prepare_transfer (ta, arg [0], arg [1]);
		1868	}
		1869
		1870	static void
		1871	slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
		1872	{
		1873	if (items != 2)
		1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1875
		1876	frame->prepare = slf_prepare_transfer;
		1877	frame->check = slf_check_nop;
		1878	frame->data = (void *)arg; /* let's hope it will stay valid */
		1879	}
		1880
		1881	static void
		1882	slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
		1883	{
		1884	frame->prepare = prepare_schedule;
		1885	frame->check = slf_check_nop;
		1886	}
		1887
		1888	static void
		1889	slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
		1890	{
		1891	frame->prepare = prepare_cede;
		1892	frame->check = slf_check_nop;
		1893	}
		1894
		1895	static void
		1896	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
		1897	{
		1898	frame->prepare = prepare_cede_notself;
		1899	frame->check = slf_check_nop;
		1900	}
		1901
		1902	/* we hijack an hopefully unused CV flag for our purposes */
		1903	#define CVf_SLF 0x4000
		1904
		1905	/*
		1906	* these not obviously related functions are all rolled into one
		1907	* function to increase chances that they all will call transfer with the same
		1908	* stack offset
		1909	* SLF stands for "schedule-like-function".
		1910	*/
		1911	static OP *
		1912	pp_slf (pTHX)
		1913	{
		1914	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1915
		1916	/* set up the slf frame, unless it has already been set-up */
		1917	/* the latter happens when a new coro has been started */
		1918	/* or when a new cctx was attached to an existing coroutine */
		1919	if (expect_true (!slf_frame.prepare))
		1920	{
		1921	/* first iteration */
		1922	dSP;
		1923	SV **arg = PL_stack_base + TOPMARK + 1;
		1924	int items = SP - arg; /* args without function object */
		1925	SV *gv = *sp;
		1926
		1927	/* do a quick consistency check on the "function" object, and if it isn't */
		1928	/* for us, divert to the real entersub */
		1929	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1930	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1931
		1932	/* pop args */
		1933	SP = PL_stack_base + POPMARK;
		1934
		1935	if (!(PL_op->op_flags & OPf_STACKED))
		1936	{
		1937	/* ampersand-form of call, use @_ instead of stack */
		1938	AV *av = GvAV (PL_defgv);
		1939	arg = AvARRAY (av);
		1940	items = AvFILLp (av) + 1;
		1941	}
		1942
		1943	PUTBACK;
		1944
		1945	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
		1946	}
		1947
		1948	/* now interpret the slf_frame */
		1949	/* we use a callback system not to make the code needlessly */
		1950	/* complicated, but so we can run multiple perl coros from one cctx */
		1951
		1952	do
		1953	{
		1954	struct coro_transfer_args ta;
		1955
		1956	slf_frame.prepare (aTHX_ &ta);
		1957	TRANSFER (ta, 0);
		1958
		1959	checkmark = PL_stack_sp - PL_stack_base;
		1960	}
		1961	while (slf_frame.check (aTHX_ &slf_frame));
		1962
		1963	{
		1964	dSP;
		1965	SV **bot = PL_stack_base + checkmark;
		1966	int gimme = GIMME_V;
		1967
		1968	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
		1969
		1970	/* make sure we put something on the stack in scalar context */
		1971	if (gimme == G_SCALAR)
		1972	{
		1973	if (sp == bot)
		1974	XPUSHs (&PL_sv_undef);
		1975
		1976	SP = bot + 1;
		1977	}
		1978
		1979	PUTBACK;
		1980	}
		1981
		1982	return NORMAL;
		1983	}
		1984
		1985	static void
		1986	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
		1987	{
		1988	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1989
		1990	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1991	&& PL_op->op_ppaddr != pp_slf)
		1992	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1993
		1994	if (items > 3)
		1995	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
		1996
		1997	CvFLAGS (cv) |= CVf_SLF;
		1998	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1999	slf_cv = cv;
		2000
		2001	/* we patch the op, and then re-run the whole call */
		2002	/* we have to put the same argument on the stack for this to work */
		2003	/* and this will be done by pp_restore */
		2004	slf_restore.op_next = (OP *)&slf_restore;
		2005	slf_restore.op_type = OP_NULL;
		2006	slf_restore.op_ppaddr = pp_restore;
		2007	slf_restore.op_first = PL_op;
		2008
		2009	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
		2010	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		2011	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
		2012
		2013	PL_op->op_ppaddr = pp_slf;
		2014
		2015	PL_op = (OP *)&slf_restore;
		2016	}
		2017
		2018	/*****************************************************************************/
		2019
		2020	static int
		2021	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2022	{
		2023	AV *av = (AV *)frame->data;
		2024	SV *count_sv = AvARRAY (av)[0];
		2025
		2026	if (SvIVX (count_sv) > 0)
		2027	{
		2028	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2029	return 0;
		2030	}
		2031	else
		2032	{
		2033	int i;
		2034	/* if we were woken up but can't down, we look through the whole */
		2035	/* waiters list and only add us if we aren't in there already */
		2036	/* this avoids some degenerate memory usage cases */
		2037
		2038	for (i = 1; i <= AvFILLp (av); ++i)
		2039	if (AvARRAY (av)[i] == SvRV (coro_current))
		2040	return 1;
		2041
		2042	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2043	return 1;
		2044	}
		2045	}
		2046
		2047	static void
		2048	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items)
		2049	{
		2050	AV *av = (AV *)SvRV (arg [0]);
		2051
		2052	if (SvIVX (AvARRAY (av)[0]) > 0)
		2053	{
		2054	frame->data = (void *)av;
		2055	frame->prepare = prepare_nop;
		2056	}
		2057	else
		2058	{
		2059	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2060
		2061	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
		2062	frame->prepare = prepare_schedule;
		2063	}
		2064
		2065	frame->check = slf_check_semaphore_down;
		2066
		2067	}
1728		2068
1729	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2069	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1730		2070
1731	PROTOTYPES: DISABLE	2071	PROTOTYPES: DISABLE
1732		2072
1733	BOOT:	2073	BOOT:
1734	{	2074	{
1735	#ifdef USE_ITHREADS	2075	#ifdef USE_ITHREADS
1736	MUTEX_INIT (&coro_mutex);	2076	MUTEX_INIT (&coro_lock);
		2077	# if CORO_PTHREAD
		2078	coro_thx = PERL_GET_CONTEXT;
		2079	# endif
1737	#endif	2080	#endif
1738	BOOT_PAGESIZE;	2081	BOOT_PAGESIZE;
1739		2082
1740	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	2083	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1741	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	2084	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
…		…
1759	main_top_env = PL_top_env;	2102	main_top_env = PL_top_env;
1760		2103
1761	while (main_top_env->je_prev)	2104	while (main_top_env->je_prev)
1762	main_top_env = main_top_env->je_prev;	2105	main_top_env = main_top_env->je_prev;
1763		2106
1764	coroapi.ver = CORO_API_VERSION;	2107	coroapi.ver = CORO_API_VERSION;
1765	coroapi.rev = CORO_API_REVISION;	2108	coroapi.rev = CORO_API_REVISION;
		2109
1766	coroapi.transfer = api_transfer;	2110	coroapi.transfer = api_transfer;
		2111
		2112	coroapi.sv_state = SvSTATE_;
		2113	coroapi.execute_slf = api_execute_slf;
		2114	coroapi.prepare_nop = prepare_nop;
		2115	coroapi.prepare_schedule = prepare_schedule;
		2116	coroapi.prepare_cede = prepare_cede;
		2117	coroapi.prepare_cede_notself = prepare_cede_notself;
1767		2118
1768	{	2119	{
1769	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2120	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1770		2121
1771	if (!svp) croak ("Time::HiRes is required");	2122	if (!svp) croak ("Time::HiRes is required");
…		…
1804	av_push (coro->args, newSVsv (ST (i)));	2155	av_push (coro->args, newSVsv (ST (i)));
1805	}	2156	}
1806	OUTPUT:	2157	OUTPUT:
1807	RETVAL	2158	RETVAL
1808		2159
1809	# these not obviously related functions are all rolled into the same xs
1810	# function to increase chances that they all will call transfer with the same
1811	# stack offset
1812	void	2160	void
1813	_set_stacklevel (...)	2161	_set_stacklevel (...)
1814	ALIAS:	2162	CODE:
1815	Coro::State::transfer = 1	2163	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1816	Coro::schedule = 2
1817	Coro::cede = 3
1818	Coro::cede_notself = 4
1819	CODE:
1820	{
1821	struct transfer_args ta;
1822		2164
1823	PUTBACK;	2165	void
1824	switch (ix)	2166	transfer (...)
1825	{	2167	CODE:
1826	case 0:	2168	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1827	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1828	ta.next = 0;
1829	break;
1830
1831	case 1:
1832	if (items != 2)
1833	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1834
1835	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1836	break;
1837
1838	case 2:
1839	prepare_schedule (aTHX_ &ta);
1840	break;
1841
1842	case 3:
1843	prepare_cede (aTHX_ &ta);
1844	break;
1845
1846	case 4:
1847	if (!prepare_cede_notself (aTHX_ &ta))
1848	XSRETURN_EMPTY;
1849
1850	break;
1851	}
1852	SPAGAIN;
1853
1854	BARRIER;
1855	PUTBACK;
1856	TRANSFER (ta, 0);
1857	SPAGAIN; /* might be the sp of a different coroutine now */
1858	/* be extra careful not to ever do anything after TRANSFER */
1859	}
1860		2169
1861	bool	2170	bool
1862	_destroy (SV *coro_sv)	2171	_destroy (SV *coro_sv)
1863	CODE:	2172	CODE:
1864	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2173	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1871	CODE:	2180	CODE:
1872	_exit (code);	2181	_exit (code);
1873		2182
1874	int	2183	int
1875	cctx_stacksize (int new_stacksize = 0)	2184	cctx_stacksize (int new_stacksize = 0)
		2185	PROTOTYPE: ;$
1876	CODE:	2186	CODE:
1877	RETVAL = coro_stacksize;	2187	RETVAL = cctx_stacksize;
1878	if (new_stacksize)	2188	if (new_stacksize)
		2189	{
1879	coro_stacksize = new_stacksize;	2190	cctx_stacksize = new_stacksize;
		2191	++cctx_gen;
		2192	}
1880	OUTPUT:	2193	OUTPUT:
1881	RETVAL	2194	RETVAL
1882		2195
1883	int	2196	int
		2197	cctx_max_idle (int max_idle = 0)
		2198	PROTOTYPE: ;$
		2199	CODE:
		2200	RETVAL = cctx_max_idle;
		2201	if (max_idle > 1)
		2202	cctx_max_idle = max_idle;
		2203	OUTPUT:
		2204	RETVAL
		2205
		2206	int
1884	cctx_count ()	2207	cctx_count ()
		2208	PROTOTYPE:
1885	CODE:	2209	CODE:
1886	RETVAL = cctx_count;	2210	RETVAL = cctx_count;
1887	OUTPUT:	2211	OUTPUT:
1888	RETVAL	2212	RETVAL
1889		2213
1890	int	2214	int
1891	cctx_idle ()	2215	cctx_idle ()
		2216	PROTOTYPE:
1892	CODE:	2217	CODE:
1893	RETVAL = cctx_idle;	2218	RETVAL = cctx_idle;
1894	OUTPUT:	2219	OUTPUT:
1895	RETVAL	2220	RETVAL
1896		2221
1897	void	2222	void
1898	list ()	2223	list ()
		2224	PROTOTYPE:
1899	PPCODE:	2225	PPCODE:
1900	{	2226	{
1901	struct coro *coro;	2227	struct coro *coro;
1902	for (coro = coro_first; coro; coro = coro->next)	2228	for (coro = coro_first; coro; coro = coro->next)
1903	if (coro->hv)	2229	if (coro->hv)
…		…
1962	RETVAL = boolSV (coro->flags & ix);	2288	RETVAL = boolSV (coro->flags & ix);
1963	OUTPUT:	2289	OUTPUT:
1964	RETVAL	2290	RETVAL
1965		2291
1966	void	2292	void
		2293	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2294	PROTOTYPE: $;$
		2295	CODE:
		2296	SvREFCNT_dec (self->throw);
		2297	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2298
		2299	void
1967	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2300	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2301	PROTOTYPE: $;$
		2302	C_ARGS: aTHX_ coro, flags
1968		2303
1969	SV *	2304	SV *
1970	has_cctx (Coro::State coro)	2305	has_cctx (Coro::State coro)
1971	PROTOTYPE: $	2306	PROTOTYPE: $
1972	CODE:	2307	CODE:
…		…
1980	CODE:	2315	CODE:
1981	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2316	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1982	OUTPUT:	2317	OUTPUT:
1983	RETVAL	2318	RETVAL
1984		2319
1985	IV	2320	UV
1986	rss (Coro::State coro)	2321	rss (Coro::State coro)
1987	PROTOTYPE: $	2322	PROTOTYPE: $
1988	ALIAS:	2323	ALIAS:
1989	usecount = 1	2324	usecount = 1
1990	CODE:	2325	CODE:
…		…
1996	OUTPUT:	2331	OUTPUT:
1997	RETVAL	2332	RETVAL
1998		2333
1999	void	2334	void
2000	force_cctx ()	2335	force_cctx ()
		2336	PROTOTYPE:
2001	CODE:	2337	CODE:
2002	struct coro *coro = SvSTATE (coro_current);	2338	struct coro *coro = SvSTATE (coro_current);
2003	coro->cctx->idle_sp = 0;	2339	coro->cctx->idle_sp = 0;
2004
2005	void
2006	throw (Coro::State self, SV *throw = &PL_sv_undef)
2007	PROTOTYPE: $;$
2008	CODE:
2009	SvREFCNT_dec (self->throw);
2010	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2011		2340
2012	void	2341	void
2013	swap_defsv (Coro::State self)	2342	swap_defsv (Coro::State self)
2014	PROTOTYPE: $	2343	PROTOTYPE: $
2015	ALIAS:	2344	ALIAS:
2016	swap_defav = 1	2345	swap_defav = 1
2017	CODE:	2346	CODE:
2018	if (!self->slot)	2347	if (!self->slot)
2019	croak ("cannot swap state with coroutine that has no saved state");	2348	croak ("cannot swap state with coroutine that has no saved state,");
2020	else	2349	else
2021	{	2350	{
2022	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);	2351	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2023	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2352	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2024		2353
…		…
2049		2378
2050	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2379	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2051	coro_ready[i] = newAV ();	2380	coro_ready[i] = newAV ();
2052		2381
2053	{	2382	{
2054	SV *sv = perl_get_sv ("Coro::API", TRUE);	2383	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2055	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2056		2384
2057	coroapi.schedule = api_schedule;	2385	coroapi.schedule = api_schedule;
2058	coroapi.cede = api_cede;	2386	coroapi.cede = api_cede;
2059	coroapi.cede_notself = api_cede_notself;	2387	coroapi.cede_notself = api_cede_notself;
2060	coroapi.ready = api_ready;	2388	coroapi.ready = api_ready;
2061	coroapi.is_ready = api_is_ready;	2389	coroapi.is_ready = api_is_ready;
2062	coroapi.nready = &coro_nready;	2390	coroapi.nready = coro_nready;
2063	coroapi.current = coro_current;	2391	coroapi.current = coro_current;
2064		2392
2065	GCoroAPI = &coroapi;	2393	GCoroAPI = &coroapi;
2066	sv_setiv (sv, (IV)&coroapi);	2394	sv_setiv (sv, (IV)&coroapi);
2067	SvREADONLY_on (sv);	2395	SvREADONLY_on (sv);
2068	}	2396	}
2069	}	2397	}
		2398
		2399	void
		2400	schedule (...)
		2401	CODE:
		2402	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items);
		2403
		2404	void
		2405	cede (...)
		2406	CODE:
		2407	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items);
		2408
		2409	void
		2410	cede_notself (...)
		2411	CODE:
		2412	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items);
2070		2413
2071	void	2414	void
2072	_set_current (SV *current)	2415	_set_current (SV *current)
2073	PROTOTYPE: $	2416	PROTOTYPE: $
2074	CODE:	2417	CODE:
2075	SvREFCNT_dec (SvRV (coro_current));	2418	SvREFCNT_dec (SvRV (coro_current));
2076	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2419	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2077		2420
2078	void	2421	void
2079	_set_readyhook (SV *hook)	2422	_set_readyhook (SV *hook)
2080	PROTOTYPE: $	2423	PROTOTYPE: $
2081	CODE:	2424	CODE:
…		…
2084	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2427	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2085	UNLOCK;	2428	UNLOCK;
2086		2429
2087	int	2430	int
2088	prio (Coro::State coro, int newprio = 0)	2431	prio (Coro::State coro, int newprio = 0)
		2432	PROTOTYPE: $;$
2089	ALIAS:	2433	ALIAS:
2090	nice = 1	2434	nice = 1
2091	CODE:	2435	CODE:
2092	{	2436	{
2093	RETVAL = coro->prio;	2437	RETVAL = coro->prio;
…		…
2108		2452
2109	SV *	2453	SV *
2110	ready (SV *self)	2454	ready (SV *self)
2111	PROTOTYPE: $	2455	PROTOTYPE: $
2112	CODE:	2456	CODE:
2113	RETVAL = boolSV (api_ready (self));	2457	RETVAL = boolSV (api_ready (aTHX_ self));
2114	OUTPUT:	2458	OUTPUT:
2115	RETVAL	2459	RETVAL
2116		2460
2117	int	2461	int
2118	nready (...)	2462	nready (...)
…		…
2141	SvREFCNT_dec (old);	2485	SvREFCNT_dec (old);
2142	croak ("\3async_pool terminate\2\n");	2486	croak ("\3async_pool terminate\2\n");
2143	}	2487	}
2144		2488
2145	SvREFCNT_dec (coro->saved_deffh);	2489	SvREFCNT_dec (coro->saved_deffh);
2146	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2490	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2147		2491
2148	hv_store (hv, "desc", sizeof ("desc") - 1,	2492	hv_store (hv, "desc", sizeof ("desc") - 1,
2149	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2493	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2150		2494
2151	invoke_av = (AV *)SvRV (invoke);	2495	invoke_av = (AV *)SvRV (invoke);
…		…
2155		2499
2156	if (len > 0)	2500	if (len > 0)
2157	{	2501	{
2158	av_fill (defav, len - 1);	2502	av_fill (defav, len - 1);
2159	for (i = 0; i < len; ++i)	2503	for (i = 0; i < len; ++i)
2160	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2504	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2161	}	2505	}
2162
2163	SvREFCNT_dec (invoke);
2164	}	2506	}
2165		2507
2166	void	2508	void
2167	_pool_2 (SV *cb)	2509	_pool_2 (SV *cb)
2168	CODE:	2510	CODE:
…		…
2172	sv_setsv (cb, &PL_sv_undef);	2514	sv_setsv (cb, &PL_sv_undef);
2173		2515
2174	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2516	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2175	coro->saved_deffh = 0;	2517	coro->saved_deffh = 0;
2176		2518
2177	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2519	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2178	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2520	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2179	{	2521	{
2180	SV *old = PL_diehook;	2522	SV *old = PL_diehook;
2181	PL_diehook = 0;	2523	PL_diehook = 0;
2182	SvREFCNT_dec (old);	2524	SvREFCNT_dec (old);
…		…
2188	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2530	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2189		2531
2190	coro->prio = 0;	2532	coro->prio = 0;
2191		2533
2192	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2534	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2193	api_trace (coro_current, 0);	2535	api_trace (aTHX_ coro_current, 0);
2194		2536
2195	av_push (av_async_pool, newSVsv (coro_current));	2537	av_push (av_async_pool, newSVsv (coro_current));
2196	}	2538	}
2197		2539
2198	#if 0	2540	#if 0
…		…
2244	#endif	2586	#endif
2245		2587
2246		2588
2247	MODULE = Coro::State PACKAGE = Coro::AIO	2589	MODULE = Coro::State PACKAGE = Coro::AIO
2248		2590
2249	SV *	2591	void
2250	_get_state ()	2592	_get_state (SV *self)
		2593	PROTOTYPE: $
2251	CODE:	2594	PPCODE:
2252	{	2595	{
2253	struct io_state *data;	2596	AV *defav = GvAV (PL_defgv);
2254		2597	AV *av = newAV ();
		2598	int i;
2255	RETVAL = newSV (sizeof (struct io_state));	2599	SV *data_sv = newSV (sizeof (struct io_state));
2256	data = (struct io_state *)SvPVX (RETVAL);	2600	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2257	SvCUR_set (RETVAL, sizeof (struct io_state));	2601	SvCUR_set (data_sv, sizeof (struct io_state));
2258	SvPOK_only (RETVAL);	2602	SvPOK_only (data_sv);
2259		2603
2260	data->errorno = errno;	2604	data->errorno = errno;
2261	data->laststype = PL_laststype;	2605	data->laststype = PL_laststype;
2262	data->laststatval = PL_laststatval;	2606	data->laststatval = PL_laststatval;
2263	data->statcache = PL_statcache;	2607	data->statcache = PL_statcache;
		2608
		2609	av_extend (av, AvFILLp (defav) + 1 + 1);
		2610
		2611	for (i = 0; i <= AvFILLp (defav); ++i)
		2612	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2613
		2614	av_push (av, data_sv);
		2615
		2616	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2617
		2618	api_ready (aTHX_ self);
2264	}	2619	}
2265	OUTPUT:
2266	RETVAL
2267		2620
2268	void	2621	void
2269	_set_state (char *data_)	2622	_set_state (SV *state)
2270	PROTOTYPE: $	2623	PROTOTYPE: $
2271	CODE:	2624	PPCODE:
2272	{	2625	{
2273	struct io_state *data = (void *)data_;	2626	AV *av = (AV *)SvRV (state);
		2627	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2628	int i;
2274		2629
2275	errno = data->errorno;	2630	errno = data->errorno;
2276	PL_laststype = data->laststype;	2631	PL_laststype = data->laststype;
2277	PL_laststatval = data->laststatval;	2632	PL_laststatval = data->laststatval;
2278	PL_statcache = data->statcache;	2633	PL_statcache = data->statcache;
		2634
		2635	EXTEND (SP, AvFILLp (av));
		2636	for (i = 0; i < AvFILLp (av); ++i)
		2637	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2279	}	2638	}
2280		2639
2281		2640
2282	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2641	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2283		2642
2284	BOOT:	2643	BOOT:
2285	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2644	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2286		2645
2287	SV *	2646	SV *
2288	_schedule (...)	2647	_schedule (...)
2289	PROTOTYPE: @
2290	CODE:	2648	CODE:
2291	{	2649	{
2292	static int incede;	2650	static int incede;
2293		2651
2294	api_cede_notself ();	2652	api_cede_notself (aTHX);
2295		2653
2296	++incede;	2654	++incede;
2297	while (coro_nready >= incede && api_cede ())	2655	while (coro_nready >= incede && api_cede (aTHX))
2298	;	2656	;
2299		2657
2300	sv_setsv (sv_activity, &PL_sv_undef);	2658	sv_setsv (sv_activity, &PL_sv_undef);
2301	if (coro_nready >= incede)	2659	if (coro_nready >= incede)
2302	{	2660	{
…		…
2312		2670
2313	MODULE = Coro::State PACKAGE = PerlIO::cede	2671	MODULE = Coro::State PACKAGE = PerlIO::cede
2314		2672
2315	BOOT:	2673	BOOT:
2316	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2674	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2675
		2676	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2677
		2678	SV *
		2679	new (SV *klass, SV *count_ = 0)
		2680	CODE:
		2681	{
		2682	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2683	AV *av = newAV ();
		2684	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2685	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2686	}
		2687	OUTPUT:
		2688	RETVAL
		2689
		2690	SV *
		2691	count (SV *self)
		2692	CODE:
		2693	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2694	OUTPUT:
		2695	RETVAL
		2696
		2697	void
		2698	up (SV *self, int adjust = 1)
		2699	ALIAS:
		2700	adjust = 1
		2701	CODE:
		2702	{
		2703	AV *av = (AV *)SvRV (self);
		2704	SV *count_sv = AvARRAY (av)[0];
		2705	IV count = SvIVX (count_sv);
		2706
		2707	count += ix ? adjust : 1;
		2708	SvIVX (count_sv) = count;
		2709
		2710	/* now wake up as many waiters as possible */
		2711	while (count > 0 && AvFILLp (av) >= count)
		2712	{
		2713	SV *cb;
		2714
		2715	/* swap first two elements so we can shift a waiter */
		2716	AvARRAY (av)[0] = AvARRAY (av)[1];
		2717	AvARRAY (av)[1] = count_sv;
		2718	cb = av_shift (av);
		2719
		2720	if (SvOBJECT (cb))
		2721	api_ready (cb);
		2722	else
		2723	croak ("callbacks not yet supported");
		2724
		2725	SvREFCNT_dec (cb);
		2726	}
		2727	}
		2728
		2729	void
		2730	down (SV *self)
		2731	CODE:
		2732	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items);
		2733
		2734	void
		2735	try (SV *self)
		2736	PPCODE:
		2737	{
		2738	AV *av = (AV *)SvRV (self);
		2739	SV *count_sv = AvARRAY (av)[0];
		2740	IV count = SvIVX (count_sv);
		2741
		2742	if (count > 0)
		2743	{
		2744	--count;
		2745	SvIVX (count_sv) = count;
		2746	XSRETURN_YES;
		2747	}
		2748	else
		2749	XSRETURN_NO;
		2750	}
		2751
		2752	void
		2753	waiters (SV *self)
		2754	CODE:
		2755	{
		2756	AV *av = (AV *)SvRV (self);
		2757
		2758	if (GIMME_V == G_SCALAR)
		2759	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2760	else
		2761	{
		2762	int i;
		2763	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2764	for (i = 1; i <= AvFILLp (av); ++i)
		2765	PUSHs (newSVsv (AvARRAY (av)[i]));
		2766	}
		2767	}
		2768

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