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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC vs.
Revision 1.321 by root, Sat Nov 22 02:09:54 2008 UTC

		1	#define CORO_CLONE 1 //D
		2
1	#include "libcoro/coro.c"	3	#include "libcoro/coro.c"
2		4
3	#define PERL_NO_GET_CONTEXT	5	#define PERL_NO_GET_CONTEXT
4	#define PERL_EXT	6	#define PERL_EXT
5		7
…		…
16		18
17	#ifdef WIN32	19	#ifdef WIN32
18	# undef setjmp	20	# undef setjmp
19	# undef longjmp	21	# undef longjmp
20	# undef _exit	22	# undef _exit
21	# define setjmp _setjmp // deep magic, don't ask	23	# define setjmp _setjmp /* deep magic */
22	#else	24	#else
23	# include <inttypes.h> /* most portable stdint.h */	25	# include <inttypes.h> /* most portable stdint.h */
24	#endif	26	#endif
25		27
26	#ifdef HAVE_MMAP	28	#ifdef HAVE_MMAP
…		…
55		57
56	#define PERL_VERSION_ATLEAST(a,b,c) \	58	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \	59	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \	60	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \	61	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	62	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61		63
62	#if !PERL_VERSION_ATLEAST (5,6,0)	64	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr	65	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr	66	# define PL_ppaddr ppaddr
65	# endif	67	# endif
…		…
98	# define newSV(l) NEWSV(0,l)	100	# define newSV(l) NEWSV(0,l)
99	#endif	101	#endif
100	#ifndef CvISXSUB_on	102	#ifndef CvISXSUB_on
101	# define CvISXSUB_on(cv) (void)cv	103	# define CvISXSUB_on(cv) (void)cv
102	#endif	104	#endif
		105	#ifndef CvISXSUB
		106	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
		107	#endif
		108	#ifndef Newx
		109	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
		110	#endif
103		111
104	/* 5.8.7 */	112	/* 5.8.7 */
105	#ifndef SvRV_set	113	#ifndef SvRV_set
106	# define SvRV_set(s,v) SvRV(s) = (v)	114	# define SvRV_set(s,v) SvRV(s) = (v)
107	#endif	115	#endif
…		…
120	#endif	128	#endif
121		129
122	/* The next macros try to return the current stack pointer, in an as	130	/* The next macros try to return the current stack pointer, in an as
123	* portable way as possible. */	131	* portable way as possible. */
124	#if __GNUC__ >= 4	132	#if __GNUC__ >= 4
		133	# define dSTACKLEVEL int stacklevel_dummy
125	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	134	# define STACKLEVEL __builtin_frame_address (0)
126	#else	135	#else
127	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	136	# define dSTACKLEVEL volatile void *stacklevel
		137	# define STACKLEVEL ((void *)&stacklevel)
128	#endif	138	#endif
129		139
130	#define IN_DESTRUCT (PL_main_cv == Nullcv)	140	#define IN_DESTRUCT (PL_main_cv == Nullcv)
131		141
132	#if __GNUC__ >= 3	142	#if __GNUC__ >= 3
…		…
143	#define expect_true(expr) expect ((expr) != 0, 1)	153	#define expect_true(expr) expect ((expr) != 0, 1)
144		154
145	#define NOINLINE attribute ((noinline))	155	#define NOINLINE attribute ((noinline))
146		156
147	#include "CoroAPI.h"	157	#include "CoroAPI.h"
		158	#define GCoroAPI (&coroapi) /* very sneaky */
148		159
149	#ifdef USE_ITHREADS	160	#ifdef USE_ITHREADS
150	# if CORO_PTHREAD	161	# if CORO_PTHREAD
151	static void *coro_thx;	162	static void *coro_thx;
152	# endif	163	# endif
153	#endif	164	#endif
154		165
155	static double (*nvtime)(); /* so why doesn't it take void? */	166	static double (*nvtime)(); /* so why doesn't it take void? */
		167
		168	/* we hijack an hopefully unused CV flag for our purposes */
		169	#define CVf_SLF 0x4000
		170	static OP *pp_slf (pTHX);
156		171
157	static U32 cctx_gen;	172	static U32 cctx_gen;
158	static size_t cctx_stacksize = CORO_STACKSIZE;	173	static size_t cctx_stacksize = CORO_STACKSIZE;
159	static struct CoroAPI coroapi;	174	static struct CoroAPI coroapi;
160	static AV *main_mainstack; /* used to differentiate between $main and others */	175	static AV *main_mainstack; /* used to differentiate between $main and others */
161	static JMPENV *main_top_env;	176	static JMPENV *main_top_env;
162	static HV *coro_state_stash, *coro_stash;	177	static HV *coro_state_stash, *coro_stash;
163	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	178	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164		179
		180	static AV *av_destroy; /* destruction queue */
		181	static SV *sv_manager; /* the manager coro */
		182
165	static GV *irsgv; /* $/ */	183	static GV *irsgv; /* $/ */
166	static GV *stdoutgv; /* *STDOUT */	184	static GV *stdoutgv; /* *STDOUT */
167	static SV *rv_diehook;	185	static SV *rv_diehook;
168	static SV *rv_warnhook;	186	static SV *rv_warnhook;
169	static HV *hv_sig; /* %SIG */	187	static HV *hv_sig; /* %SIG */
170		188
171	/* async_pool helper stuff */	189	/* async_pool helper stuff */
172	static SV *sv_pool_rss;	190	static SV *sv_pool_rss;
173	static SV *sv_pool_size;	191	static SV *sv_pool_size;
		192	static SV *sv_async_pool_idle; /* description string */
174	static AV *av_async_pool;	193	static AV *av_async_pool; /* idle pool */
		194	static SV *sv_Coro; /* class string */
		195	static CV *cv_pool_handler;
		196	static CV *cv_coro_state_new;
175		197
176	/* Coro::AnyEvent */	198	/* Coro::AnyEvent */
177	static SV *sv_activity;	199	static SV *sv_activity;
178		200
179	static struct coro_cctx *cctx_first;	201	static struct coro_cctx *cctx_first;
…		…
239	/* state data */	261	/* state data */
240	struct CoroSLF slf_frame; /* saved slf frame */	262	struct CoroSLF slf_frame; /* saved slf frame */
241	AV *mainstack;	263	AV *mainstack;
242	perl_slots *slot; /* basically the saved sp */	264	perl_slots *slot; /* basically the saved sp */
243		265
		266	CV *startcv; /* the CV to execute */
244	AV *args; /* data associated with this coroutine (initial args) */	267	AV *args; /* data associated with this coroutine (initial args) */
245	int refcnt; /* coroutines are refcounted, yes */	268	int refcnt; /* coroutines are refcounted, yes */
246	int flags; /* CF_ flags */	269	int flags; /* CF_ flags */
247	HV *hv; /* the perl hash associated with this coro, if any */	270	HV *hv; /* the perl hash associated with this coro, if any */
248	void (*on_destroy)(pTHX_ struct coro *coro);	271	void (*on_destroy)(pTHX_ struct coro *coro);
249		272
250	/* statistics */	273	/* statistics */
251	int usecount; /* number of transfers to this coro */	274	int usecount; /* number of transfers to this coro */
252		275
253	/* coro process data */	276	/* coro process data */
254	int prio;	277	int prio;
255	SV *throw; /* exception to be thrown */	278	SV *except; /* exception to be thrown */
		279	SV *rouse_cb;
256		280
257	/* async_pool */	281	/* async_pool */
258	SV *saved_deffh;	282	SV *saved_deffh;
		283	SV *invoke_cb;
		284	AV *invoke_av;
259		285
260	/* linked list */	286	/* linked list */
261	struct coro *next, *prev;	287	struct coro *next, *prev;
262	};	288	};
263		289
…		…
266		292
267	/* the following variables are effectively part of the perl context */	293	/* the following variables are effectively part of the perl context */
268	/* and get copied between struct coro and these variables */	294	/* and get copied between struct coro and these variables */
269	/* the mainr easonw e don't support windows process emulation */	295	/* the mainr easonw e don't support windows process emulation */
270	static struct CoroSLF slf_frame; /* the current slf frame */	296	static struct CoroSLF slf_frame; /* the current slf frame */
271	static SV *coro_throw;
272		297
273	/** Coro ********************************************************************/	298	/** Coro ********************************************************************/
274		299
275	#define PRIO_MAX 3	300	#define PRIO_MAX 3
276	#define PRIO_HIGH 1	301	#define PRIO_HIGH 1
…		…
281		306
282	/* for Coro.pm */	307	/* for Coro.pm */
283	static SV *coro_current;	308	static SV *coro_current;
284	static SV *coro_readyhook;	309	static SV *coro_readyhook;
285	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	310	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		311	static CV *cv_coro_run, *cv_coro_terminate;
286	static struct coro *coro_first;	312	static struct coro *coro_first;
287	#define coro_nready coroapi.nready	313	#define coro_nready coroapi.nready
288		314
289	/** lowlevel stuff **********************************************************/	315	/** lowlevel stuff **********************************************************/
290		316
…		…
316	get_hv (name, create);	342	get_hv (name, create);
317	#endif	343	#endif
318	return get_hv (name, create);	344	return get_hv (name, create);
319	}	345	}
320		346
		347	/* may croak */
		348	INLINE CV *
		349	coro_sv_2cv (pTHX_ SV *sv)
		350	{
		351	HV *st;
		352	GV *gvp;
		353	return sv_2cv (sv, &st, &gvp, 0);
		354	}
		355
321	static AV *	356	static AV *
322	coro_clone_padlist (pTHX_ CV *cv)	357	coro_derive_padlist (pTHX_ CV *cv)
323	{	358	{
324	AV *padlist = CvPADLIST (cv);	359	AV *padlist = CvPADLIST (cv);
325	AV *newpadlist, *newpad;	360	AV *newpadlist, *newpad;
326		361
327	newpadlist = newAV ();	362	newpadlist = newAV ();
…		…
442	else	477	else
443	{	478	{
444	#if CORO_PREFER_PERL_FUNCTIONS	479	#if CORO_PREFER_PERL_FUNCTIONS
445	/* this is probably cleaner? but also slower! */	480	/* this is probably cleaner? but also slower! */
446	/* in practise, it seems to be less stable */	481	/* in practise, it seems to be less stable */
447	CV *cp = Perl_cv_clone (cv);	482	CV *cp = Perl_cv_clone (aTHX_ cv);
448	CvPADLIST (cv) = CvPADLIST (cp);	483	CvPADLIST (cv) = CvPADLIST (cp);
449	CvPADLIST (cp) = 0;	484	CvPADLIST (cp) = 0;
450	SvREFCNT_dec (cp);	485	SvREFCNT_dec (cp);
451	#else	486	#else
452	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	487	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453	#endif	488	#endif
454	}	489	}
455	}	490	}
456		491
457	static void	492	static void
…		…
505		540
506	PUTBACK;	541	PUTBACK;
507	}	542	}
508		543
509	slf_frame = c->slf_frame;	544	slf_frame = c->slf_frame;
510	coro_throw = c->throw;	545	CORO_THROW = c->except;
511	}	546	}
512		547
513	static void	548	static void
514	save_perl (pTHX_ Coro__State c)	549	save_perl (pTHX_ Coro__State c)
515	{	550	{
516	c->throw = coro_throw;	551	c->except = CORO_THROW;
517	c->slf_frame = slf_frame;	552	c->slf_frame = slf_frame;
518		553
519	{	554	{
520	dSP;	555	dSP;
521	I32 cxix = cxstack_ix;	556	I32 cxix = cxstack_ix;
…		…
596	* of perl.c:init_stacks, except that it uses less memory	631	* of perl.c:init_stacks, except that it uses less memory
597	* on the (sometimes correct) assumption that coroutines do	632	* on the (sometimes correct) assumption that coroutines do
598	* not usually need a lot of stackspace.	633	* not usually need a lot of stackspace.
599	*/	634	*/
600	#if CORO_PREFER_PERL_FUNCTIONS	635	#if CORO_PREFER_PERL_FUNCTIONS
601	# define coro_init_stacks init_stacks	636	# define coro_init_stacks(thx) init_stacks ()
602	#else	637	#else
603	static void	638	static void
604	coro_init_stacks (pTHX)	639	coro_init_stacks (pTHX)
605	{	640	{
606	PL_curstackinfo = new_stackinfo(32, 8);	641	PL_curstackinfo = new_stackinfo(32, 8);
…		…
669	#if !PERL_VERSION_ATLEAST (5,10,0)	704	#if !PERL_VERSION_ATLEAST (5,10,0)
670	Safefree (PL_retstack);	705	Safefree (PL_retstack);
671	#endif	706	#endif
672	}	707	}
673		708
		709	#define CORO_RSS \
		710	rss += sizeof (SYM (curstackinfo)); \
		711	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		712	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		713	rss += SYM (tmps_max) * sizeof (SV *); \
		714	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		715	rss += SYM (scopestack_max) * sizeof (I32); \
		716	rss += SYM (savestack_max) * sizeof (ANY);
		717
674	static size_t	718	static size_t
675	coro_rss (pTHX_ struct coro *coro)	719	coro_rss (pTHX_ struct coro *coro)
676	{	720	{
677	size_t rss = sizeof (*coro);	721	size_t rss = sizeof (*coro);
678		722
679	if (coro->mainstack)	723	if (coro->mainstack)
680	{	724	{
681	perl_slots tmp_slot;
682	perl_slots *slot;
683
684	if (coro->flags & CF_RUNNING)	725	if (coro->flags & CF_RUNNING)
685	{	726	{
686	slot = &tmp_slot;	727	#define SYM(sym) PL_ ## sym
687		728	CORO_RSS;
688	#define VAR(name,type) slot->name = PL_ ## name;
689	# include "state.h"
690	#undef VAR	729	#undef SYM
691	}	730	}
692	else	731	else
693	slot = coro->slot;
694
695	if (slot)
696	{	732	{
697	rss += sizeof (slot->curstackinfo);	733	#define SYM(sym) coro->slot->sym
698	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	734	CORO_RSS;
699	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	735	#undef SYM
700	rss += slot->tmps_max * sizeof (SV *);
701	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702	rss += slot->scopestack_max * sizeof (I32);
703	rss += slot->savestack_max * sizeof (ANY);
704
705	#if !PERL_VERSION_ATLEAST (5,10,0)
706	rss += slot->retstack_max * sizeof (OP *);
707	#endif
708	}	736	}
709	}	737	}
710		738
711	return rss;	739	return rss;
712	}	740	}
…		…
814	slf_check_nop (pTHX_ struct CoroSLF *frame)	842	slf_check_nop (pTHX_ struct CoroSLF *frame)
815	{	843	{
816	return 0;	844	return 0;
817	}	845	}
818		846
		847	static int
		848	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		849	{
		850	return 1;
		851	}
		852
		853	static UNOP coro_setup_op;
		854
819	static void NOINLINE /* noinline to keep it out of the transfer fast path */	855	static void NOINLINE /* noinline to keep it out of the transfer fast path */
820	coro_setup (pTHX_ struct coro *coro)	856	coro_setup (pTHX_ struct coro *coro)
821	{	857	{
822	/*	858	/*
823	* emulate part of the perl startup here.	859	* emulate part of the perl startup here.
…		…
851	{	887	{
852	dSP;	888	dSP;
853	UNOP myop;	889	UNOP myop;
854		890
855	Zero (&myop, 1, UNOP);	891	Zero (&myop, 1, UNOP);
856	myop.op_next = Nullop;	892	myop.op_next = Nullop;
		893	myop.op_type = OP_ENTERSUB;
857	myop.op_flags = OPf_WANT_VOID;	894	myop.op_flags = OPf_WANT_VOID;
858		895
859	PUSHMARK (SP);	896	PUSHMARK (SP);
860	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	897	PUSHs ((SV *)coro->startcv);
861	PUTBACK;	898	PUTBACK;
862	PL_op = (OP *)&myop;	899	PL_op = (OP *)&myop;
863	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	900	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864	SPAGAIN;
865	}	901	}
866		902
867	/* this newly created coroutine might be run on an existing cctx which most	903	/* this newly created coroutine might be run on an existing cctx which most
868	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	904	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869	*/	905	*/
870	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	906	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	907	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
872		908
873	coro_throw = coro->throw;	909	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		910	coro_setup_op.op_next = PL_op;
		911	coro_setup_op.op_type = OP_ENTERSUB;
		912	coro_setup_op.op_ppaddr = pp_slf;
		913	/* no flags etc. required, as an init function won't be called */
		914
		915	PL_op = (OP *)&coro_setup_op;
		916
		917	/* copy throw, in case it was set before coro_setup */
		918	CORO_THROW = coro->except;
874	}	919	}
875		920
876	static void	921	static void
877	coro_destruct (pTHX_ struct coro *coro)	922	coro_destruct (pTHX_ struct coro *coro)
878	{	923	{
…		…
902		947
903	SvREFCNT_dec (PL_diehook);	948	SvREFCNT_dec (PL_diehook);
904	SvREFCNT_dec (PL_warnhook);	949	SvREFCNT_dec (PL_warnhook);
905		950
906	SvREFCNT_dec (coro->saved_deffh);	951	SvREFCNT_dec (coro->saved_deffh);
907	SvREFCNT_dec (coro_throw);	952	SvREFCNT_dec (coro->rouse_cb);
		953	SvREFCNT_dec (coro->invoke_cb);
		954	SvREFCNT_dec (coro->invoke_av);
908		955
909	coro_destruct_stacks (aTHX);	956	coro_destruct_stacks (aTHX);
910	}	957	}
911		958
912	INLINE void	959	INLINE void
…		…
984	{	1031	{
985	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1032	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986		1033
987	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1034	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988	{	1035	{
989	runops_proc_t old_runops = PL_runops;
990	dSP;	1036	dSP;
991	GV *gv = CvGV (cx->blk_sub.cv);	1037	GV *gv = CvGV (cx->blk_sub.cv);
992	SV *fullname = sv_2mortal (newSV (0));	1038	SV *fullname = sv_2mortal (newSV (0));
993		1039
994	if (isGV (gv))	1040	if (isGV (gv))
…		…
999	SAVETMPS;	1045	SAVETMPS;
1000	EXTEND (SP, 3);	1046	EXTEND (SP, 3);
1001	PUSHMARK (SP);	1047	PUSHMARK (SP);
1002	PUSHs (&PL_sv_yes);	1048	PUSHs (&PL_sv_yes);
1003	PUSHs (fullname);	1049	PUSHs (fullname);
1004	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1050	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1005	PUTBACK;	1051	PUTBACK;
1006	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1052	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1053	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008	SPAGAIN;	1054	SPAGAIN;
1009	FREETMPS;	1055	FREETMPS;
…		…
1041		1087
1042	TAINT_NOT;	1088	TAINT_NOT;
1043	return 0;	1089	return 0;
1044	}	1090	}
1045		1091
		1092	static struct coro_cctx *cctx_ssl_cctx;
		1093	static struct CoroSLF cctx_ssl_frame;
		1094
1046	static void	1095	static void
1047	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)	1096	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048	{	1097	{
1049	ta->prev = (struct coro *)cctx;	1098	ta->prev = (struct coro *)cctx_ssl_cctx;
1050	ta->next = 0;	1099	ta->next = 0;
1051	}	1100	}
1052		1101
1053	/* inject a fake call to Coro::State::_cctx_init into the execution */	1102	static int
1054	/* _cctx_init should be careful, as it could be called at almost any time */	1103	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055	/* during execution of a perl program */	1104	{
1056	/* also initialises PL_top_env */	1105	*frame = cctx_ssl_frame;
		1106
		1107	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1108	}
		1109
		1110	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1057	static void NOINLINE	1111	static void NOINLINE
1058	cctx_prepare (pTHX_ coro_cctx *cctx)	1112	cctx_prepare (pTHX_ coro_cctx *cctx)
1059	{	1113	{
1060	dSP;
1061	UNOP myop;
1062
1063	PL_top_env = &PL_start_env;	1114	PL_top_env = &PL_start_env;
1064		1115
1065	if (cctx->flags & CC_TRACE)	1116	if (cctx->flags & CC_TRACE)
1066	PL_runops = runops_trace;	1117	PL_runops = runops_trace;
1067		1118
1068	Zero (&myop, 1, UNOP);	1119	/* we already must be executing an SLF op, there is no other valid way
1069	myop.op_next = PL_op;	1120	* that can lead to creation of a new cctx */
1070	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1121	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1122	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071		1123
1072	PUSHMARK (SP);	1124	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073	EXTEND (SP, 2);	1125	cctx_ssl_cctx = cctx;
1074	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1126	cctx_ssl_frame = slf_frame;
1075	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1127
1076	PUTBACK;	1128	slf_frame.prepare = slf_prepare_set_stacklevel;
1077	PL_op = (OP *)&myop;	1129	slf_frame.check = slf_check_set_stacklevel;
1078	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079	SPAGAIN;
1080	}	1130	}
1081		1131
1082	/* the tail of transfer: execute stuff we can only do after a transfer */	1132	/* the tail of transfer: execute stuff we can only do after a transfer */
1083	INLINE void	1133	INLINE void
1084	transfer_tail (pTHX)	1134	transfer_tail (pTHX)
…		…
1111	transfer_tail (aTHX);	1161	transfer_tail (aTHX);
1112		1162
1113	/* somebody or something will hit me for both perl_run and PL_restartop */	1163	/* somebody or something will hit me for both perl_run and PL_restartop */
1114	PL_restartop = PL_op;	1164	PL_restartop = PL_op;
1115	perl_run (PL_curinterp);	1165	perl_run (PL_curinterp);
		1166	/*
		1167	* Unfortunately, there is no way to get at the return values of the
		1168	* coro body here, as perl_run destroys these
		1169	*/
1116		1170
1117	/*	1171	/*
1118	* If perl-run returns we assume exit() was being called or the coro	1172	* If perl-run returns we assume exit() was being called or the coro
1119	* fell off the end, which seems to be the only valid (non-bug)	1173	* fell off the end, which seems to be the only valid (non-bug)
1120	* reason for perl_run to return. We try to exit by jumping to the	1174	* reason for perl_run to return. We try to exit by jumping to the
…		…
1300	dSTACKLEVEL;	1354	dSTACKLEVEL;
1301		1355
1302	/* sometimes transfer is only called to set idle_sp */	1356	/* sometimes transfer is only called to set idle_sp */
1303	if (expect_false (!next))	1357	if (expect_false (!next))
1304	{	1358	{
1305	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;	1359	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1306	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1360	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307	}	1361	}
1308	else if (expect_true (prev != next))	1362	else if (expect_true (prev != next))
1309	{	1363	{
1310	coro_cctx *prev__cctx;	1364	coro_cctx *prev__cctx;
…		…
1335		1389
1336	prev__cctx = prev->cctx;	1390	prev__cctx = prev->cctx;
1337		1391
1338	/* possibly untie and reuse the cctx */	1392	/* possibly untie and reuse the cctx */
1339	if (expect_true (	1393	if (expect_true (
1340	prev__cctx->idle_sp == (void *)stacklevel	1394	prev__cctx->idle_sp == STACKLEVEL
1341	&& !(prev__cctx->flags & CC_TRACE)	1395	&& !(prev__cctx->flags & CC_TRACE)
1342	&& !force_cctx	1396	&& !force_cctx
1343	))	1397	))
1344	{	1398	{
1345	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1399	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1412		1466
1413	coro->slot = 0;	1467	coro->slot = 0;
1414	}	1468	}
1415		1469
1416	cctx_destroy (coro->cctx);	1470	cctx_destroy (coro->cctx);
		1471	SvREFCNT_dec (coro->startcv);
1417	SvREFCNT_dec (coro->args);	1472	SvREFCNT_dec (coro->args);
		1473	SvREFCNT_dec (CORO_THROW);
1418		1474
1419	if (coro->next) coro->next->prev = coro->prev;	1475	if (coro->next) coro->next->prev = coro->prev;
1420	if (coro->prev) coro->prev->next = coro->next;	1476	if (coro->prev) coro->prev->next = coro->next;
1421	if (coro == coro_first) coro_first = coro->next;	1477	if (coro == coro_first) coro_first = coro->next;
1422		1478
…		…
1476		1532
1477	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1533	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1478	TRANSFER (ta, 1);	1534	TRANSFER (ta, 1);
1479	}	1535	}
1480		1536
		1537	/*****************************************************************************/
		1538	/* gensub: simple closure generation utility */
		1539
		1540	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1541
		1542	/* create a closure from XS, returns a code reference */
		1543	/* the arg can be accessed via GENSUB_ARG from the callback */
		1544	/* the callback must use dXSARGS/XSRETURN */
		1545	static SV *
		1546	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1547	{
		1548	CV *cv = (CV *)newSV (0);
		1549
		1550	sv_upgrade ((SV *)cv, SVt_PVCV);
		1551
		1552	CvANON_on (cv);
		1553	CvISXSUB_on (cv);
		1554	CvXSUB (cv) = xsub;
		1555	GENSUB_ARG = arg;
		1556
		1557	return newRV_noinc ((SV *)cv);
		1558	}
		1559
1481	/** Coro ********************************************************************/	1560	/** Coro ********************************************************************/
1482		1561
1483	INLINE void	1562	INLINE void
1484	coro_enq (pTHX_ struct coro *coro)	1563	coro_enq (pTHX_ struct coro *coro)
1485	{	1564	{
…		…
1528	ENTER;	1607	ENTER;
1529	SAVETMPS;	1608	SAVETMPS;
1530		1609
1531	PUSHMARK (SP);	1610	PUSHMARK (SP);
1532	PUTBACK;	1611	PUTBACK;
1533	call_sv (sv_hook, G_DISCARD);	1612	call_sv (sv_hook, G_VOID | G_DISCARD);
1534	SPAGAIN;
1535		1613
1536	FREETMPS;	1614	FREETMPS;
1537	LEAVE;	1615	LEAVE;
1538	}	1616	}
1539		1617
…		…
1547	api_is_ready (pTHX_ SV *coro_sv)	1625	api_is_ready (pTHX_ SV *coro_sv)
1548	{	1626	{
1549	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1627	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550	}	1628	}
1551		1629
		1630	/* expects to own a reference to next->hv */
1552	INLINE void	1631	INLINE void
		1632	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
		1633	{
		1634	SV *prev_sv = SvRV (coro_current);
		1635
		1636	ta->prev = SvSTATE_hv (prev_sv);
		1637	ta->next = next;
		1638
		1639	TRANSFER_CHECK (*ta);
		1640
		1641	SvRV_set (coro_current, (SV *)next->hv);
		1642
		1643	free_coro_mortal (aTHX);
		1644	coro_mortal = prev_sv;
		1645	}
		1646
		1647	static void
1553	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1648	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1554	{	1649	{
1555	SV *prev_sv, *next_sv;
1556
1557	for (;;)	1650	for (;;)
1558	{	1651	{
1559	next_sv = coro_deq (aTHX);	1652	SV *next_sv = coro_deq (aTHX);
1560		1653
1561	/* nothing to schedule: call the idle handler */
1562	if (expect_false (!next_sv))	1654	if (expect_true (next_sv))
1563	{	1655	{
		1656	struct coro *next = SvSTATE_hv (next_sv);
		1657
		1658	/* cannot transfer to destroyed coros, skip and look for next */
		1659	if (expect_false (next->flags & CF_DESTROYED))
		1660	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
		1661	else
		1662	{
		1663	next->flags &= ~CF_READY;
		1664	--coro_nready;
		1665
		1666	prepare_schedule_to (aTHX_ ta, next);
		1667	break;
		1668	}
		1669	}
		1670	else
		1671	{
		1672	/* nothing to schedule: call the idle handler */
1564	dSP;	1673	dSP;
1565		1674
1566	ENTER;	1675	ENTER;
1567	SAVETMPS;	1676	SAVETMPS;
1568		1677
1569	PUSHMARK (SP);	1678	PUSHMARK (SP);
1570	PUTBACK;	1679	PUTBACK;
1571	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1680	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1572	SPAGAIN;
1573		1681
1574	FREETMPS;	1682	FREETMPS;
1575	LEAVE;	1683	LEAVE;
1576	continue;
1577	}	1684	}
1578
1579	ta->next = SvSTATE_hv (next_sv);
1580
1581	/* cannot transfer to destroyed coros, skip and look for next */
1582	if (expect_false (ta->next->flags & CF_DESTROYED))
1583	{
1584	SvREFCNT_dec (next_sv);
1585	/* coro_nready has already been taken care of by destroy */
1586	continue;
1587	}
1588
1589	--coro_nready;
1590	break;
1591	}	1685	}
1592
1593	/* free this only after the transfer */
1594	prev_sv = SvRV (coro_current);
1595	ta->prev = SvSTATE_hv (prev_sv);
1596	TRANSFER_CHECK (*ta);
1597	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1598	ta->next->flags &= ~CF_READY;
1599	SvRV_set (coro_current, next_sv);
1600
1601	free_coro_mortal (aTHX);
1602	coro_mortal = prev_sv;
1603	}	1686	}
1604		1687
1605	INLINE void	1688	INLINE void
1606	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1689	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607	{	1690	{
…		…
1628	{	1711	{
1629	struct coro_transfer_args ta;	1712	struct coro_transfer_args ta;
1630		1713
1631	prepare_schedule (aTHX_ &ta);	1714	prepare_schedule (aTHX_ &ta);
1632	TRANSFER (ta, 1);	1715	TRANSFER (ta, 1);
		1716	}
		1717
		1718	static void
		1719	api_schedule_to (pTHX_ SV *coro_sv)
		1720	{
		1721	struct coro_transfer_args ta;
		1722	struct coro *next = SvSTATE (coro_sv);
		1723
		1724	SvREFCNT_inc_NN (coro_sv);
		1725	prepare_schedule_to (aTHX_ &ta, next);
1633	}	1726	}
1634		1727
1635	static int	1728	static int
1636	api_cede (pTHX)	1729	api_cede (pTHX)
1637	{	1730	{
…		…
1684	if (coro->flags & CF_RUNNING)	1777	if (coro->flags & CF_RUNNING)
1685	PL_runops = RUNOPS_DEFAULT;	1778	PL_runops = RUNOPS_DEFAULT;
1686	else	1779	else
1687	coro->slot->runops = RUNOPS_DEFAULT;	1780	coro->slot->runops = RUNOPS_DEFAULT;
1688	}	1781	}
		1782	}
		1783
		1784	static void
		1785	coro_call_on_destroy (pTHX_ struct coro *coro)
		1786	{
		1787	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1788	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1789
		1790	if (on_destroyp)
		1791	{
		1792	AV *on_destroy = (AV *)SvRV (*on_destroyp);
		1793
		1794	while (AvFILLp (on_destroy) >= 0)
		1795	{
		1796	dSP; /* don't disturb outer sp */
		1797	SV *cb = av_pop (on_destroy);
		1798
		1799	PUSHMARK (SP);
		1800
		1801	if (statusp)
		1802	{
		1803	int i;
		1804	AV *status = (AV *)SvRV (*statusp);
		1805	EXTEND (SP, AvFILLp (status) + 1);
		1806
		1807	for (i = 0; i <= AvFILLp (status); ++i)
		1808	PUSHs (AvARRAY (status)[i]);
		1809	}
		1810
		1811	PUTBACK;
		1812	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
		1813	}
		1814	}
		1815	}
		1816
		1817	static void
		1818	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1819	{
		1820	int i;
		1821	HV *hv = (HV *)SvRV (coro_current);
		1822	AV *av = newAV ();
		1823
		1824	av_extend (av, items - 1);
		1825	for (i = 0; i < items; ++i)
		1826	av_push (av, SvREFCNT_inc_NN (arg [i]));
		1827
		1828	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		1829
		1830	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
		1831	api_ready (aTHX_ sv_manager);
		1832
		1833	frame->prepare = prepare_schedule;
		1834	frame->check = slf_check_repeat;
		1835	}
		1836
		1837	/*****************************************************************************/
		1838	/* async pool handler */
		1839
		1840	static int
		1841	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
		1842	{
		1843	HV *hv = (HV *)SvRV (coro_current);
		1844	struct coro *coro = (struct coro *)frame->data;
		1845
		1846	if (!coro->invoke_cb)
		1847	return 1; /* loop till we have invoke */
		1848	else
		1849	{
		1850	hv_store (hv, "desc", sizeof ("desc") - 1,
		1851	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1852
		1853	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1854
		1855	{
		1856	dSP;
		1857	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1858	PUTBACK;
		1859	}
		1860
		1861	SvREFCNT_dec (GvAV (PL_defgv));
		1862	GvAV (PL_defgv) = coro->invoke_av;
		1863	coro->invoke_av = 0;
		1864
		1865	return 0;
		1866	}
		1867	}
		1868
		1869	static void
		1870	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1871	{
		1872	HV *hv = (HV *)SvRV (coro_current);
		1873	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1874
		1875	if (expect_true (coro->saved_deffh))
		1876	{
		1877	/* subsequent iteration */
		1878	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1879	coro->saved_deffh = 0;
		1880
		1881	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1882	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1883	{
		1884	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1885	coro->invoke_av = newAV ();
		1886
		1887	frame->prepare = prepare_nop;
		1888	}
		1889	else
		1890	{
		1891	av_clear (GvAV (PL_defgv));
		1892	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1893
		1894	coro->prio = 0;
		1895
		1896	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1897	api_trace (aTHX_ coro_current, 0);
		1898
		1899	frame->prepare = prepare_schedule;
		1900	av_push (av_async_pool, SvREFCNT_inc (hv));
		1901	}
		1902	}
		1903	else
		1904	{
		1905	/* first iteration, simply fall through */
		1906	frame->prepare = prepare_nop;
		1907	}
		1908
		1909	frame->check = slf_check_pool_handler;
		1910	frame->data = (void *)coro;
		1911	}
		1912
		1913	/*****************************************************************************/
		1914	/* rouse callback */
		1915
		1916	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1917
		1918	static void
		1919	coro_rouse_callback (pTHX_ CV *cv)
		1920	{
		1921	dXSARGS;
		1922	SV *data = (SV *)GENSUB_ARG;
		1923
		1924	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1925	{
		1926	/* first call, set args */
		1927	AV *av = newAV ();
		1928	SV *coro = SvRV (data);
		1929
		1930	SvRV_set (data, (SV *)av);
		1931	api_ready (aTHX_ coro);
		1932	SvREFCNT_dec (coro);
		1933
		1934	/* better take a full copy of the arguments */
		1935	while (items--)
		1936	av_store (av, items, newSVsv (ST (items)));
		1937	}
		1938
		1939	XSRETURN_EMPTY;
		1940	}
		1941
		1942	static int
		1943	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1944	{
		1945	SV *data = (SV *)frame->data;
		1946
		1947	if (CORO_THROW)
		1948	return 0;
		1949
		1950	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1951	return 1;
		1952
		1953	/* now push all results on the stack */
		1954	{
		1955	dSP;
		1956	AV *av = (AV *)SvRV (data);
		1957	int i;
		1958
		1959	EXTEND (SP, AvFILLp (av) + 1);
		1960	for (i = 0; i <= AvFILLp (av); ++i)
		1961	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1962
		1963	/* we have stolen the elements, so ste length to zero and free */
		1964	AvFILLp (av) = -1;
		1965	av_undef (av);
		1966
		1967	PUTBACK;
		1968	}
		1969
		1970	return 0;
		1971	}
		1972
		1973	static void
		1974	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1975	{
		1976	SV *cb;
		1977
		1978	if (items)
		1979	cb = arg [0];
		1980	else
		1981	{
		1982	struct coro *coro = SvSTATE_current;
		1983
		1984	if (!coro->rouse_cb)
		1985	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1986
		1987	cb = sv_2mortal (coro->rouse_cb);
		1988	coro->rouse_cb = 0;
		1989	}
		1990
		1991	if (!SvROK (cb)
		1992	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1993	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1994	croak ("Coro::rouse_wait called with illegal callback argument,");
		1995
		1996	{
		1997	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1998	SV *data = (SV *)GENSUB_ARG;
		1999
		2000	frame->data = (void *)data;
		2001	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		2002	frame->check = slf_check_rouse_wait;
		2003	}
		2004	}
		2005
		2006	static SV *
		2007	coro_new_rouse_cb (pTHX)
		2008	{
		2009	HV *hv = (HV *)SvRV (coro_current);
		2010	struct coro *coro = SvSTATE_hv (hv);
		2011	SV *data = newRV_inc ((SV *)hv);
		2012	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		2013
		2014	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		2015	SvREFCNT_dec (data); /* magicext increases the refcount */
		2016
		2017	SvREFCNT_dec (coro->rouse_cb);
		2018	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		2019
		2020	return cb;
1689	}	2021	}
1690		2022
1691	/*****************************************************************************/	2023	/*****************************************************************************/
1692	/* schedule-like-function opcode (SLF) */	2024	/* schedule-like-function opcode (SLF) */
1693		2025
…		…
1717		2049
1718	RETURNOP (slf_restore.op_first);	2050	RETURNOP (slf_restore.op_first);
1719	}	2051	}
1720		2052
1721	static void	2053	static void
1722	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723	{
1724	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725	}
1726
1727	static void
1728	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729	{
1730	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732	frame->prepare = slf_prepare_set_stacklevel;
1733	frame->check = slf_check_nop;
1734	frame->data = (void *)SvIV (arg [0]);
1735	}
1736
1737	static void
1738	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)	2054	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739	{	2055	{
1740	SV **arg = (SV **)slf_frame.data;	2056	SV **arg = (SV **)slf_frame.data;
1741		2057
1742	prepare_transfer (aTHX_ ta, arg [0], arg [1]);	2058	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
…		…
1759	frame->prepare = prepare_schedule;	2075	frame->prepare = prepare_schedule;
1760	frame->check = slf_check_nop;	2076	frame->check = slf_check_nop;
1761	}	2077	}
1762		2078
1763	static void	2079	static void
		2080	slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
		2081	{
		2082	struct coro *next = (struct coro *)slf_frame.data;
		2083
		2084	SvREFCNT_inc_NN (next->hv);
		2085	prepare_schedule_to (aTHX_ ta, next);
		2086	}
		2087
		2088	static void
		2089	slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2090	{
		2091	if (!items)
		2092	croak ("Coro::schedule_to expects a coroutine argument, caught");
		2093
		2094	frame->data = (void *)SvSTATE (arg [0]);
		2095	frame->prepare = slf_prepare_schedule_to;
		2096	frame->check = slf_check_nop;
		2097	}
		2098
		2099	static void
		2100	slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2101	{
		2102	api_ready (aTHX_ SvRV (coro_current));
		2103
		2104	slf_init_schedule_to (aTHX_ frame, cv, arg, items);
		2105	}
		2106
		2107	static void
1764	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2108	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765	{	2109	{
1766	frame->prepare = prepare_cede;	2110	frame->prepare = prepare_cede;
1767	frame->check = slf_check_nop;	2111	frame->check = slf_check_nop;
1768	}	2112	}
…		…
1771	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2115	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1772	{	2116	{
1773	frame->prepare = prepare_cede_notself;	2117	frame->prepare = prepare_cede_notself;
1774	frame->check = slf_check_nop;	2118	frame->check = slf_check_nop;
1775	}	2119	}
1776
1777	/* we hijack an hopefully unused CV flag for our purposes */
1778	#define CVf_SLF 0x4000
1779		2120
1780	/*	2121	/*
1781	* these not obviously related functions are all rolled into one	2122	* these not obviously related functions are all rolled into one
1782	* function to increase chances that they all will call transfer with the same	2123	* function to increase chances that they all will call transfer with the same
1783	* stack offset	2124	* stack offset
…		…
1839	}	2180	}
1840	while (slf_frame.check (aTHX_ &slf_frame));	2181	while (slf_frame.check (aTHX_ &slf_frame));
1841		2182
1842	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */	2183	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843		2184
1844	/* return value handling - mostly like entersub */
1845	{
1846	dSP;
1847	SV **bot = PL_stack_base + checkmark;
1848	int gimme = GIMME_V;
1849
1850	/* make sure we put something on the stack in scalar context */
1851	if (gimme == G_SCALAR)
1852	{
1853	if (sp == bot)
1854	XPUSHs (&PL_sv_undef);
1855
1856	SP = bot + 1;
1857	}
1858
1859	PUTBACK;
1860	}
1861
1862	/* exception handling */	2185	/* exception handling */
1863	if (expect_false (coro_throw))	2186	if (expect_false (CORO_THROW))
1864	{	2187	{
1865	SV *exception = sv_2mortal (coro_throw);	2188	SV *exception = sv_2mortal (CORO_THROW);
1866		2189
1867	coro_throw = 0;	2190	CORO_THROW = 0;
1868	sv_setsv (ERRSV, exception);	2191	sv_setsv (ERRSV, exception);
1869	croak (0);	2192	croak (0);
		2193	}
		2194
		2195	/* return value handling - mostly like entersub */
		2196	/* make sure we put something on the stack in scalar context */
		2197	if (GIMME_V == G_SCALAR)
		2198	{
		2199	dSP;
		2200	SV **bot = PL_stack_base + checkmark;
		2201
		2202	if (sp == bot) /* too few, push undef */
		2203	bot [1] = &PL_sv_undef;
		2204	else if (sp != bot + 1) /* too many, take last one */
		2205	bot [1] = *sp;
		2206
		2207	SP = bot + 1;
		2208
		2209	PUTBACK;
1870	}	2210	}
1871		2211
1872	return NORMAL;	2212	return NORMAL;
1873	}	2213	}
1874		2214
…		…
1915	}	2255	}
1916	else	2256	else
1917	slf_argc = 0;	2257	slf_argc = 0;
1918		2258
1919	PL_op->op_ppaddr = pp_slf;	2259	PL_op->op_ppaddr = pp_slf;
1920	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */	2260	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921		2261
1922	PL_op = (OP *)&slf_restore;	2262	PL_op = (OP *)&slf_restore;
1923	}	2263	}
1924		2264
1925	/*****************************************************************************/	2265	/*****************************************************************************/
…		…
1996	PerlIOBuf_get_cnt,	2336	PerlIOBuf_get_cnt,
1997	PerlIOBuf_set_ptrcnt,	2337	PerlIOBuf_set_ptrcnt,
1998	};	2338	};
1999		2339
2000	/*****************************************************************************/	2340	/*****************************************************************************/
		2341	/* Coro::Semaphore & Coro::Signal */
		2342
		2343	static SV *
		2344	coro_waitarray_new (pTHX_ int count)
		2345	{
		2346	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2347	AV *av = newAV ();
		2348	SV **ary;
		2349
		2350	/* unfortunately, building manually saves memory */
		2351	Newx (ary, 2, SV *);
		2352	AvALLOC (av) = ary;
		2353	/*AvARRAY (av) = ary;*/
		2354	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2355	AvMAX (av) = 1;
		2356	AvFILLp (av) = 0;
		2357	ary [0] = newSViv (count);
		2358
		2359	return newRV_noinc ((SV *)av);
		2360	}
		2361
2001	/* Coro::Semaphore */	2362	/* semaphore */
2002		2363
2003	static void	2364	static void
2004	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2365	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005	{	2366	{
2006	SV *count_sv = AvARRAY (av)[0];	2367	SV *count_sv = AvARRAY (av)[0];
…		…
2018	AvARRAY (av)[0] = AvARRAY (av)[1];	2379	AvARRAY (av)[0] = AvARRAY (av)[1];
2019	AvARRAY (av)[1] = count_sv;	2380	AvARRAY (av)[1] = count_sv;
2020	cb = av_shift (av);	2381	cb = av_shift (av);
2021		2382
2022	if (SvOBJECT (cb))	2383	if (SvOBJECT (cb))
		2384	{
2023	api_ready (aTHX_ cb);	2385	api_ready (aTHX_ cb);
2024	else	2386	--count;
2025	croak ("callbacks not yet supported");	2387	}
		2388	else if (SvTYPE (cb) == SVt_PVCV)
		2389	{
		2390	dSP;
		2391	PUSHMARK (SP);
		2392	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2393	PUTBACK;
		2394	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2395	}
2026		2396
2027	SvREFCNT_dec (cb);	2397	SvREFCNT_dec (cb);
2028
2029	--count;
2030	}	2398	}
2031	}	2399	}
2032		2400
2033	static void	2401	static void
2034	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2402	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
…		…
2036	/* call $sem->adjust (0) to possibly wake up some other waiters */	2404	/* call $sem->adjust (0) to possibly wake up some other waiters */
2037	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2405	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2038	}	2406	}
2039		2407
2040	static int	2408	static int
2041	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2409	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042	{	2410	{
2043	AV *av = (AV *)frame->data;	2411	AV *av = (AV *)frame->data;
2044	SV *count_sv = AvARRAY (av)[0];	2412	SV *count_sv = AvARRAY (av)[0];
2045		2413
		2414	/* if we are about to throw, don't actually acquire the lock, just throw */
		2415	if (CORO_THROW)
		2416	return 0;
2046	if (SvIVX (count_sv) > 0)	2417	else if (SvIVX (count_sv) > 0)
2047	{	2418	{
2048	SvSTATE_current->on_destroy = 0;	2419	SvSTATE_current->on_destroy = 0;
		2420
		2421	if (acquire)
2049	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2422	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2423	else
		2424	coro_semaphore_adjust (aTHX_ av, 0);
		2425
2050	return 0;	2426	return 0;
2051	}	2427	}
2052	else	2428	else
2053	{	2429	{
2054	int i;	2430	int i;
…		…
2063	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2439	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2064	return 1;	2440	return 1;
2065	}	2441	}
2066	}	2442	}
2067		2443
2068	static void	2444	static int
		2445	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2446	{
		2447	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2448	}
		2449
		2450	static int
		2451	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2452	{
		2453	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2454	}
		2455
		2456	static void
2069	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2457	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070	{	2458	{
2071	AV *av = (AV *)SvRV (arg [0]);	2459	AV *av = (AV *)SvRV (arg [0]);
2072		2460
2073	if (SvIVX (AvARRAY (av)[0]) > 0)	2461	if (SvIVX (AvARRAY (av)[0]) > 0)
2074	{	2462	{
2075	frame->data = (void *)av;	2463	frame->data = (void *)av;
2076	frame->prepare = prepare_nop;	2464	frame->prepare = prepare_nop;
2077	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078	}	2465	}
2079	else	2466	else
2080	{	2467	{
2081	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2468	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082		2469
2083	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2470	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084	frame->prepare = prepare_schedule;	2471	frame->prepare = prepare_schedule;
2085		2472
2086	/* to avoid race conditions when a woken-up coro gets terminated */	2473	/* to avoid race conditions when a woken-up coro gets terminated */
2087	/* we arrange for a temporary on_destroy that calls adjust (0) */	2474	/* we arrange for a temporary on_destroy that calls adjust (0) */
2088	assert (!SvSTATE_current->on_destroy);//D
2089	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2475	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090	}	2476	}
		2477	}
2091		2478
		2479	static void
		2480	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2481	{
		2482	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092	frame->check = slf_check_semaphore_down;	2483	frame->check = slf_check_semaphore_down;
2093
2094	}	2484	}
2095		2485
2096	/*****************************************************************************/	2486	static void
2097	/* gensub: simple closure generation utility */	2487	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101	/* create a closure from XS, returns a code reference */
2102	/* the arg can be accessed via GENSUB_ARG from the callback */
2103	/* the callback must use dXSARGS/XSRETURN */
2104	static SV *
2105	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106	{	2488	{
2107	CV *cv = (CV *)newSV (0);	2489	if (items >= 2)
		2490	{
		2491	/* callback form */
		2492	AV *av = (AV *)SvRV (arg [0]);
		2493	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2108		2494
2109	sv_upgrade ((SV *)cv, SVt_PVCV);	2495	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2110		2496
2111	CvANON_on (cv);	2497	if (SvIVX (AvARRAY (av)[0]) > 0)
2112	CvISXSUB_on (cv);	2498	coro_semaphore_adjust (aTHX_ av, 0);
2113	CvXSUB (cv) = xsub;
2114	GENSUB_ARG = arg;
2115		2499
2116	return newRV_noinc ((SV *)cv);	2500	frame->prepare = prepare_nop;
		2501	frame->check = slf_check_nop;
		2502	}
		2503	else
		2504	{
		2505	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2506	frame->check = slf_check_semaphore_wait;
		2507	}
		2508	}
		2509
		2510	/* signal */
		2511
		2512	static void
		2513	coro_signal_wake (pTHX_ AV *av, int count)
		2514	{
		2515	SvIVX (AvARRAY (av)[0]) = 0;
		2516
		2517	/* now signal count waiters */
		2518	while (count > 0 && AvFILLp (av) > 0)
		2519	{
		2520	SV *cb;
		2521
		2522	/* swap first two elements so we can shift a waiter */
		2523	cb = AvARRAY (av)[0];
		2524	AvARRAY (av)[0] = AvARRAY (av)[1];
		2525	AvARRAY (av)[1] = cb;
		2526
		2527	cb = av_shift (av);
		2528
		2529	api_ready (aTHX_ cb);
		2530	sv_setiv (cb, 0); /* signal waiter */
		2531	SvREFCNT_dec (cb);
		2532
		2533	--count;
		2534	}
		2535	}
		2536
		2537	static int
		2538	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2539	{
		2540	/* if we are about to throw, also stop waiting */
		2541	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2542	}
		2543
		2544	static void
		2545	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2546	{
		2547	AV *av = (AV *)SvRV (arg [0]);
		2548
		2549	if (SvIVX (AvARRAY (av)[0]))
		2550	{
		2551	SvIVX (AvARRAY (av)[0]) = 0;
		2552	frame->prepare = prepare_nop;
		2553	frame->check = slf_check_nop;
		2554	}
		2555	else
		2556	{
		2557	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2558
		2559	av_push (av, waiter);
		2560
		2561	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2562	frame->prepare = prepare_schedule;
		2563	frame->check = slf_check_signal_wait;
		2564	}
2117	}	2565	}
2118		2566
2119	/*****************************************************************************/	2567	/*****************************************************************************/
2120	/* Coro::AIO */	2568	/* Coro::AIO */
2121		2569
…		…
2136	dXSARGS;	2584	dXSARGS;
2137	AV *state = (AV *)GENSUB_ARG;	2585	AV *state = (AV *)GENSUB_ARG;
2138	SV *coro = av_pop (state);	2586	SV *coro = av_pop (state);
2139	SV *data_sv = newSV (sizeof (struct io_state));	2587	SV *data_sv = newSV (sizeof (struct io_state));
2140		2588
2141	av_extend (state, items);	2589	av_extend (state, items - 1);
2142		2590
2143	sv_upgrade (data_sv, SVt_PV);	2591	sv_upgrade (data_sv, SVt_PV);
2144	SvCUR_set (data_sv, sizeof (struct io_state));	2592	SvCUR_set (data_sv, sizeof (struct io_state));
2145	SvPOK_only (data_sv);	2593	SvPOK_only (data_sv);
2146		2594
…		…
2171	static int	2619	static int
2172	slf_check_aio_req (pTHX_ struct CoroSLF *frame)	2620	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173	{	2621	{
2174	AV *state = (AV *)frame->data;	2622	AV *state = (AV *)frame->data;
2175		2623
		2624	/* if we are about to throw, return early */
		2625	/* this does not cancel the aio request, but at least */
		2626	/* it quickly returns */
		2627	if (CORO_THROW)
		2628	return 0;
		2629
2176	/* one element that is an RV? repeat! */	2630	/* one element that is an RV? repeat! */
2177	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))	2631	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178	return 1;	2632	return 1;
2179		2633
2180	/* restore status */	2634	/* restore status */
…		…
2275	XSRETURN_EMPTY;	2729	XSRETURN_EMPTY;
2276	}	2730	}
2277		2731
2278	/*****************************************************************************/	2732	/*****************************************************************************/
2279		2733
		2734	#if CORO_CLONE
		2735	# include "clone.c"
		2736	#endif
		2737
2280	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2738	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281		2739
2282	PROTOTYPES: DISABLE	2740	PROTOTYPES: DISABLE
2283		2741
2284	BOOT:	2742	BOOT:
…		…
2316		2774
2317	{	2775	{
2318	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	2776	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319		2777
2320	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	2778	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321	hv_store_ent (PL_custom_op_names, slf,	2779	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322	newSVpv ("coro_slf", 0), 0);
2323		2780
2324	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	2781	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325	hv_store_ent (PL_custom_op_descs, slf,	2782	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326	newSVpv ("coro schedule like function", 0), 0);
2327	}	2783	}
2328		2784
2329	coroapi.ver = CORO_API_VERSION;	2785	coroapi.ver = CORO_API_VERSION;
2330	coroapi.rev = CORO_API_REVISION;	2786	coroapi.rev = CORO_API_REVISION;
2331		2787
…		…
2350	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2806	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2351	}	2807	}
2352		2808
2353	SV *	2809	SV *
2354	new (char *klass, ...)	2810	new (char *klass, ...)
		2811	ALIAS:
		2812	Coro::new = 1
2355	CODE:	2813	CODE:
2356	{	2814	{
2357	struct coro *coro;	2815	struct coro *coro;
2358	MAGIC *mg;	2816	MAGIC *mg;
2359	HV *hv;	2817	HV *hv;
		2818	CV *cb;
2360	int i;	2819	int i;
		2820
		2821	if (items > 1)
		2822	{
		2823	cb = coro_sv_2cv (aTHX_ ST (1));
		2824
		2825	if (!ix)
		2826	{
		2827	if (CvISXSUB (cb))
		2828	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2829
		2830	if (!CvROOT (cb))
		2831	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2832	}
		2833	}
2361		2834
2362	Newz (0, coro, 1, struct coro);	2835	Newz (0, coro, 1, struct coro);
2363	coro->args = newAV ();	2836	coro->args = newAV ();
2364	coro->flags = CF_NEW;	2837	coro->flags = CF_NEW;
2365		2838
…		…
2370	coro->hv = hv = newHV ();	2843	coro->hv = hv = newHV ();
2371	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2844	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372	mg->mg_flags |= MGf_DUP;	2845	mg->mg_flags |= MGf_DUP;
2373	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2846	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374		2847
		2848	if (items > 1)
		2849	{
2375	av_extend (coro->args, items - 1);	2850	av_extend (coro->args, items - 1 + ix - 1);
		2851
		2852	if (ix)
		2853	{
		2854	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2855	cb = cv_coro_run;
		2856	}
		2857
		2858	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2859
2376	for (i = 1; i < items; i++)	2860	for (i = 2; i < items; i++)
2377	av_push (coro->args, newSVsv (ST (i)));	2861	av_push (coro->args, newSVsv (ST (i)));
		2862	}
2378	}	2863	}
2379	OUTPUT:	2864	OUTPUT:
2380	RETVAL	2865	RETVAL
2381
2382	void
2383	_set_stacklevel (...)
2384	CODE:
2385	CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386		2866
2387	void	2867	void
2388	transfer (...)	2868	transfer (...)
2389	PROTOTYPE: $$	2869	PROTOTYPE: $$
2390	CODE:	2870	CODE:
…		…
2400	void	2880	void
2401	_exit (int code)	2881	_exit (int code)
2402	PROTOTYPE: $	2882	PROTOTYPE: $
2403	CODE:	2883	CODE:
2404	_exit (code);	2884	_exit (code);
		2885
		2886	#if CORO_CLONE
		2887
		2888	SV *
		2889	clone (Coro::State coro)
		2890	CODE:
		2891	{
		2892	struct coro *ncoro = coro_clone (coro);
		2893	MAGIC *mg;
		2894	/* TODO: too much duplication */
		2895	ncoro->hv = newHV ();
		2896	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
		2897	mg->mg_flags |= MGf_DUP;
		2898	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		2899	}
		2900	OUTPUT:
		2901	RETVAL
		2902
		2903	#endif
2405		2904
2406	int	2905	int
2407	cctx_stacksize (int new_stacksize = 0)	2906	cctx_stacksize (int new_stacksize = 0)
2408	PROTOTYPE: ;$	2907	PROTOTYPE: ;$
2409	CODE:	2908	CODE:
…		…
2516	throw (Coro::State self, SV *throw = &PL_sv_undef)	3015	throw (Coro::State self, SV *throw = &PL_sv_undef)
2517	PROTOTYPE: $;$	3016	PROTOTYPE: $;$
2518	CODE:	3017	CODE:
2519	{	3018	{
2520	struct coro *current = SvSTATE_current;	3019	struct coro *current = SvSTATE_current;
2521	SV **throwp = self == current ? &coro_throw : &self->throw;	3020	SV **throwp = self == current ? &CORO_THROW : &self->except;
2522	SvREFCNT_dec (*throwp);	3021	SvREFCNT_dec (*throwp);
2523	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3022	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
2524	}	3023	}
2525		3024
2526	void	3025	void
…		…
2585		3084
2586	BOOT:	3085	BOOT:
2587	{	3086	{
2588	int i;	3087	int i;
2589		3088
2590	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3089	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3090	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593		3091	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		3092	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2594	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	3093	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595	SvREADONLY_on (coro_current);	3094	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3095	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3096	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3097
		3098	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		3099	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		3100	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
		3101	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2596		3102
2597	coro_stash = gv_stashpv ("Coro", TRUE);	3103	coro_stash = gv_stashpv ("Coro", TRUE);
2598		3104
2599	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3105	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2600	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3106	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2608		3114
2609	{	3115	{
2610	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3116	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611		3117
2612	coroapi.schedule = api_schedule;	3118	coroapi.schedule = api_schedule;
		3119	coroapi.schedule_to = api_schedule_to;
2613	coroapi.cede = api_cede;	3120	coroapi.cede = api_cede;
2614	coroapi.cede_notself = api_cede_notself;	3121	coroapi.cede_notself = api_cede_notself;
2615	coroapi.ready = api_ready;	3122	coroapi.ready = api_ready;
2616	coroapi.is_ready = api_is_ready;	3123	coroapi.is_ready = api_is_ready;
2617	coroapi.nready = coro_nready;	3124	coroapi.nready = coro_nready;
2618	coroapi.current = coro_current;	3125	coroapi.current = coro_current;
2619		3126
2620	GCoroAPI = &coroapi;	3127	/*GCoroAPI = &coroapi;*/
2621	sv_setiv (sv, (IV)&coroapi);	3128	sv_setiv (sv, (IV)&coroapi);
2622	SvREADONLY_on (sv);	3129	SvREADONLY_on (sv);
2623	}	3130	}
2624	}	3131	}
		3132
		3133	void
		3134	terminate (...)
		3135	CODE:
		3136	CORO_EXECUTE_SLF_XS (slf_init_terminate);
2625		3137
2626	void	3138	void
2627	schedule (...)	3139	schedule (...)
2628	CODE:	3140	CODE:
2629	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3141	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630		3142
2631	void	3143	void
		3144	schedule_to (...)
		3145	CODE:
		3146	CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
		3147
		3148	void
		3149	cede_to (...)
		3150	CODE:
		3151	CORO_EXECUTE_SLF_XS (slf_init_cede_to);
		3152
		3153	void
2632	cede (...)	3154	cede (...)
2633	CODE:	3155	CODE:
2634	CORO_EXECUTE_SLF_XS (slf_init_cede);	3156	CORO_EXECUTE_SLF_XS (slf_init_cede);
2635		3157
2636	void	3158	void
2637	cede_notself (...)	3159	cede_notself (...)
2638	CODE:	3160	CODE:
2639	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3161	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
		3162
		3163	void
		3164	_cancel (Coro::State self)
		3165	CODE:
		3166	coro_state_destroy (aTHX_ self);
		3167	coro_call_on_destroy (aTHX_ self);
2640		3168
2641	void	3169	void
2642	_set_current (SV *current)	3170	_set_current (SV *current)
2643	PROTOTYPE: $	3171	PROTOTYPE: $
2644	CODE:	3172	CODE:
…		…
2689	CODE:	3217	CODE:
2690	RETVAL = coro_nready;	3218	RETVAL = coro_nready;
2691	OUTPUT:	3219	OUTPUT:
2692	RETVAL	3220	RETVAL
2693		3221
2694	# for async_pool speedup
2695	void	3222	void
2696	_pool_1 (SV *cb)	3223	_pool_handler (...)
2697	CODE:	3224	CODE:
2698	{	3225	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2699	HV *hv = (HV *)SvRV (coro_current);
2700	struct coro *coro = SvSTATE_hv ((SV *)hv);
2701	AV *defav = GvAV (PL_defgv);
2702	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703	AV *invoke_av;
2704	int i, len;
2705		3226
2706	if (!invoke)	3227	void
		3228	async_pool (SV *cv, ...)
		3229	PROTOTYPE: &@
		3230	PPCODE:
		3231	{
		3232	HV *hv = (HV *)av_pop (av_async_pool);
		3233	AV *av = newAV ();
		3234	SV *cb = ST (0);
		3235	int i;
		3236
		3237	av_extend (av, items - 2);
		3238	for (i = 1; i < items; ++i)
		3239	av_push (av, SvREFCNT_inc_NN (ST (i)));
		3240
		3241	if ((SV *)hv == &PL_sv_undef)
2707	{	3242	{
2708	SV *old = PL_diehook;	3243	PUSHMARK (SP);
2709	PL_diehook = 0;	3244	EXTEND (SP, 2);
2710	SvREFCNT_dec (old);	3245	PUSHs (sv_Coro);
2711	croak ("\3async_pool terminate\2\n");	3246	PUSHs ((SV *)cv_pool_handler);
		3247	PUTBACK;
		3248	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
		3249	SPAGAIN;
		3250
		3251	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2712	}	3252	}
2713		3253
2714	SvREFCNT_dec (coro->saved_deffh);
2715	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717	hv_store (hv, "desc", sizeof ("desc") - 1,
2718	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720	invoke_av = (AV *)SvRV (invoke);
2721	len = av_len (invoke_av);
2722
2723	sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725	if (len > 0)
2726	{	3254	{
2727	av_fill (defav, len - 1);	3255	struct coro *coro = SvSTATE_hv (hv);
2728	for (i = 0; i < len; ++i)	3256
2729	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	3257	assert (!coro->invoke_cb);
		3258	assert (!coro->invoke_av);
		3259	coro->invoke_cb = SvREFCNT_inc (cb);
		3260	coro->invoke_av = av;
2730	}	3261	}
		3262
		3263	api_ready (aTHX_ (SV *)hv);
		3264
		3265	if (GIMME_V != G_VOID)
		3266	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3267	else
		3268	SvREFCNT_dec (hv);
2731	}	3269	}
		3270
		3271	SV *
		3272	rouse_cb ()
		3273	PROTOTYPE:
		3274	CODE:
		3275	RETVAL = coro_new_rouse_cb (aTHX);
		3276	OUTPUT:
		3277	RETVAL
2732		3278
2733	void	3279	void
2734	_pool_2 (SV *cb)	3280	rouse_wait (...)
		3281	PROTOTYPE: ;$
2735	CODE:	3282	PPCODE:
2736	{	3283	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2737	HV *hv = (HV *)SvRV (coro_current);
2738	struct coro *coro = SvSTATE_hv ((SV *)hv);
2739
2740	sv_setsv (cb, &PL_sv_undef);
2741
2742	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2743	coro->saved_deffh = 0;
2744
2745	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2746	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747	{
2748	SV *old = PL_diehook;
2749	PL_diehook = 0;
2750	SvREFCNT_dec (old);
2751	croak ("\3async_pool terminate\2\n");
2752	}
2753
2754	av_clear (GvAV (PL_defgv));
2755	hv_store (hv, "desc", sizeof ("desc") - 1,
2756	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757
2758	coro->prio = 0;
2759
2760	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2761	api_trace (aTHX_ coro_current, 0);
2762
2763	av_push (av_async_pool, newSVsv (coro_current));
2764	}
2765		3284
2766		3285
2767	MODULE = Coro::State PACKAGE = PerlIO::cede	3286	MODULE = Coro::State PACKAGE = PerlIO::cede
2768		3287
2769	BOOT:	3288	BOOT:
…		…
2771		3290
2772		3291
2773	MODULE = Coro::State PACKAGE = Coro::Semaphore	3292	MODULE = Coro::State PACKAGE = Coro::Semaphore
2774		3293
2775	SV *	3294	SV *
2776	new (SV *klass, SV *count_ = 0)	3295	new (SV *klass, SV *count = 0)
2777	CODE:	3296	CODE:
2778	{	3297	RETVAL = sv_bless (
2779	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3298	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2780	AV *av = newAV ();	3299	GvSTASH (CvGV (cv))
2781	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	3300	);
2782	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	3301	OUTPUT:
2783	}	3302	RETVAL
		3303
		3304	# helper for Coro::Channel
		3305	SV *
		3306	_alloc (int count)
		3307	CODE:
		3308	RETVAL = coro_waitarray_new (aTHX_ count);
2784	OUTPUT:	3309	OUTPUT:
2785	RETVAL	3310	RETVAL
2786		3311
2787	SV *	3312	SV *
2788	count (SV *self)	3313	count (SV *self)
…		…
2797	adjust = 1	3322	adjust = 1
2798	CODE:	3323	CODE:
2799	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3324	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2800		3325
2801	void	3326	void
2802	down (SV *self)	3327	down (...)
2803	CODE:	3328	CODE:
2804	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);	3329	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3330
		3331	void
		3332	wait (...)
		3333	CODE:
		3334	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2805		3335
2806	void	3336	void
2807	try (SV *self)	3337	try (SV *self)
2808	PPCODE:	3338	PPCODE:
2809	{	3339	{
…		…
2821	XSRETURN_NO;	3351	XSRETURN_NO;
2822	}	3352	}
2823		3353
2824	void	3354	void
2825	waiters (SV *self)	3355	waiters (SV *self)
2826	CODE:	3356	PPCODE:
2827	{	3357	{
2828	AV *av = (AV *)SvRV (self);	3358	AV *av = (AV *)SvRV (self);
		3359	int wcount = AvFILLp (av) + 1 - 1;
2829		3360
2830	if (GIMME_V == G_SCALAR)	3361	if (GIMME_V == G_SCALAR)
2831	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3362	XPUSHs (sv_2mortal (newSViv (wcount)));
2832	else	3363	else
2833	{	3364	{
2834	int i;	3365	int i;
2835	EXTEND (SP, AvFILLp (av) + 1 - 1);	3366	EXTEND (SP, wcount);
2836	for (i = 1; i <= AvFILLp (av); ++i)	3367	for (i = 1; i <= wcount; ++i)
2837	PUSHs (newSVsv (AvARRAY (av)[i]));	3368	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2838	}	3369	}
2839	}	3370	}
		3371
		3372	MODULE = Coro::State PACKAGE = Coro::Signal
		3373
		3374	SV *
		3375	new (SV *klass)
		3376	CODE:
		3377	RETVAL = sv_bless (
		3378	coro_waitarray_new (aTHX_ 0),
		3379	GvSTASH (CvGV (cv))
		3380	);
		3381	OUTPUT:
		3382	RETVAL
		3383
		3384	void
		3385	wait (...)
		3386	CODE:
		3387	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3388
		3389	void
		3390	broadcast (SV *self)
		3391	CODE:
		3392	{
		3393	AV *av = (AV *)SvRV (self);
		3394	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3395	}
		3396
		3397	void
		3398	send (SV *self)
		3399	CODE:
		3400	{
		3401	AV *av = (AV *)SvRV (self);
		3402
		3403	if (AvFILLp (av))
		3404	coro_signal_wake (aTHX_ av, 1);
		3405	else
		3406	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3407	}
		3408
		3409	IV
		3410	awaited (SV *self)
		3411	CODE:
		3412	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3413	OUTPUT:
		3414	RETVAL
2840		3415
2841		3416
2842	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3417	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2843		3418
2844	BOOT:	3419	BOOT:
…		…
2859	sv_setsv (sv_activity, &PL_sv_undef);	3434	sv_setsv (sv_activity, &PL_sv_undef);
2860	if (coro_nready >= incede)	3435	if (coro_nready >= incede)
2861	{	3436	{
2862	PUSHMARK (SP);	3437	PUSHMARK (SP);
2863	PUTBACK;	3438	PUTBACK;
2864	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3439	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2865	SPAGAIN;
2866	}	3440	}
2867		3441
2868	--incede;	3442	--incede;
2869	}	3443	}
2870		3444
…		…
2873		3447
2874	void	3448	void
2875	_register (char *target, char *proto, SV *req)	3449	_register (char *target, char *proto, SV *req)
2876	CODE:	3450	CODE:
2877	{	3451	{
2878	HV *st;	3452	CV *req_cv = coro_sv_2cv (aTHX_ req);
2879	GV *gvp;
2880	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881	/* newXSproto doesn't return the CV on 5.8 */	3453	/* newXSproto doesn't return the CV on 5.8 */
2882	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3454	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883	sv_setpv ((SV *)slf_cv, proto);	3455	sv_setpv ((SV *)slf_cv, proto);
2884	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3456	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885	}	3457	}

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