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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.297 by root, Tue Nov 18 11:04:42 2008 UTC vs.
Revision 1.326 by root, Mon Nov 24 04:56:38 2008 UTC

…		…
16		16
17	#ifdef WIN32	17	#ifdef WIN32
18	# undef setjmp	18	# undef setjmp
19	# undef longjmp	19	# undef longjmp
20	# undef _exit	20	# undef _exit
21	# define setjmp _setjmp // deep magic, don't ask	21	# define setjmp _setjmp /* deep magic */
22	#else	22	#else
23	# include <inttypes.h> /* most portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
24	#endif	24	#endif
25		25
26	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
…		…
55		55
56	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	60	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61		61
62	#if !PERL_VERSION_ATLEAST (5,6,0)	62	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr	63	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr	64	# define PL_ppaddr ppaddr
65	# endif	65	# endif
…		…
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
100	#ifndef CvISXSUB_on	100	#ifndef CvISXSUB_on
101	# define CvISXSUB_on(cv) (void)cv	101	# define CvISXSUB_on(cv) (void)cv
102	#endif	102	#endif
		103	#ifndef CvISXSUB
		104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
		105	#endif
		106	#ifndef Newx
		107	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
		108	#endif
103		109
104	/* 5.8.7 */	110	/* 5.8.7 */
105	#ifndef SvRV_set	111	#ifndef SvRV_set
106	# define SvRV_set(s,v) SvRV(s) = (v)	112	# define SvRV_set(s,v) SvRV(s) = (v)
107	#endif	113	#endif
…		…
167	static AV *main_mainstack; /* used to differentiate between $main and others */	173	static AV *main_mainstack; /* used to differentiate between $main and others */
168	static JMPENV *main_top_env;	174	static JMPENV *main_top_env;
169	static HV *coro_state_stash, *coro_stash;	175	static HV *coro_state_stash, *coro_stash;
170	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	176	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171		177
		178	static AV *av_destroy; /* destruction queue */
		179	static SV *sv_manager; /* the manager coro */
		180	static SV *sv_idle; /* $Coro::idle */
		181
172	static GV *irsgv; /* $/ */	182	static GV *irsgv; /* $/ */
173	static GV *stdoutgv; /* *STDOUT */	183	static GV *stdoutgv; /* *STDOUT */
174	static SV *rv_diehook;	184	static SV *rv_diehook;
175	static SV *rv_warnhook;	185	static SV *rv_warnhook;
176	static HV *hv_sig; /* %SIG */	186	static HV *hv_sig; /* %SIG */
177		187
178	/* async_pool helper stuff */	188	/* async_pool helper stuff */
179	static SV *sv_pool_rss;	189	static SV *sv_pool_rss;
180	static SV *sv_pool_size;	190	static SV *sv_pool_size;
		191	static SV *sv_async_pool_idle; /* description string */
181	static AV *av_async_pool;	192	static AV *av_async_pool; /* idle pool */
		193	static SV *sv_Coro; /* class string */
		194	static CV *cv_pool_handler;
		195	static CV *cv_coro_state_new;
182		196
183	/* Coro::AnyEvent */	197	/* Coro::AnyEvent */
184	static SV *sv_activity;	198	static SV *sv_activity;
185		199
186	static struct coro_cctx *cctx_first;	200	static struct coro_cctx *cctx_first;
…		…
215	int valgrind_id;	229	int valgrind_id;
216	#endif	230	#endif
217	unsigned char flags;	231	unsigned char flags;
218	} coro_cctx;	232	} coro_cctx;
219		233
		234	coro_cctx *cctx_current; /* the currently running cctx */
		235
		236	/*****************************************************************************/
		237
220	enum {	238	enum {
221	CF_RUNNING = 0x0001, /* coroutine is running */	239	CF_RUNNING = 0x0001, /* coroutine is running */
222	CF_READY = 0x0002, /* coroutine is ready */	240	CF_READY = 0x0002, /* coroutine is ready */
223	CF_NEW = 0x0004, /* has never been switched to */	241	CF_NEW = 0x0004, /* has never been switched to */
224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	242	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
…		…
246	/* state data */	264	/* state data */
247	struct CoroSLF slf_frame; /* saved slf frame */	265	struct CoroSLF slf_frame; /* saved slf frame */
248	AV *mainstack;	266	AV *mainstack;
249	perl_slots *slot; /* basically the saved sp */	267	perl_slots *slot; /* basically the saved sp */
250		268
		269	CV *startcv; /* the CV to execute */
251	AV *args; /* data associated with this coroutine (initial args) */	270	AV *args; /* data associated with this coroutine (initial args) */
252	int refcnt; /* coroutines are refcounted, yes */	271	int refcnt; /* coroutines are refcounted, yes */
253	int flags; /* CF_ flags */	272	int flags; /* CF_ flags */
254	HV *hv; /* the perl hash associated with this coro, if any */	273	HV *hv; /* the perl hash associated with this coro, if any */
255	void (*on_destroy)(pTHX_ struct coro *coro);	274	void (*on_destroy)(pTHX_ struct coro *coro);
256		275
257	/* statistics */	276	/* statistics */
258	int usecount; /* number of transfers to this coro */	277	int usecount; /* number of transfers to this coro */
259		278
260	/* coro process data */	279	/* coro process data */
261	int prio;	280	int prio;
262	SV *except; /* exception to be thrown */	281	SV *except; /* exception to be thrown */
		282	SV *rouse_cb;
263		283
264	/* async_pool */	284	/* async_pool */
265	SV *saved_deffh;	285	SV *saved_deffh;
		286	SV *invoke_cb;
		287	AV *invoke_av;
266		288
267	/* linked list */	289	/* linked list */
268	struct coro *next, *prev;	290	struct coro *next, *prev;
269	};	291	};
270		292
…		…
287		309
288	/* for Coro.pm */	310	/* for Coro.pm */
289	static SV *coro_current;	311	static SV *coro_current;
290	static SV *coro_readyhook;	312	static SV *coro_readyhook;
291	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	313	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		314	static CV *cv_coro_run, *cv_coro_terminate;
292	static struct coro *coro_first;	315	static struct coro *coro_first;
293	#define coro_nready coroapi.nready	316	#define coro_nready coroapi.nready
294		317
295	/** lowlevel stuff **********************************************************/	318	/** lowlevel stuff **********************************************************/
296		319
…		…
322	get_hv (name, create);	345	get_hv (name, create);
323	#endif	346	#endif
324	return get_hv (name, create);	347	return get_hv (name, create);
325	}	348	}
326		349
		350	/* may croak */
		351	INLINE CV *
		352	coro_sv_2cv (pTHX_ SV *sv)
		353	{
		354	HV *st;
		355	GV *gvp;
		356	return sv_2cv (sv, &st, &gvp, 0);
		357	}
		358
327	static AV *	359	static AV *
328	coro_clone_padlist (pTHX_ CV *cv)	360	coro_derive_padlist (pTHX_ CV *cv)
329	{	361	{
330	AV *padlist = CvPADLIST (cv);	362	AV *padlist = CvPADLIST (cv);
331	AV *newpadlist, *newpad;	363	AV *newpadlist, *newpad;
332		364
333	newpadlist = newAV ();	365	newpadlist = newAV ();
…		…
448	else	480	else
449	{	481	{
450	#if CORO_PREFER_PERL_FUNCTIONS	482	#if CORO_PREFER_PERL_FUNCTIONS
451	/* this is probably cleaner? but also slower! */	483	/* this is probably cleaner? but also slower! */
452	/* in practise, it seems to be less stable */	484	/* in practise, it seems to be less stable */
453	CV *cp = Perl_cv_clone (cv);	485	CV *cp = Perl_cv_clone (aTHX_ cv);
454	CvPADLIST (cv) = CvPADLIST (cp);	486	CvPADLIST (cv) = CvPADLIST (cp);
455	CvPADLIST (cp) = 0;	487	CvPADLIST (cp) = 0;
456	SvREFCNT_dec (cp);	488	SvREFCNT_dec (cp);
457	#else	489	#else
458	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	490	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459	#endif	491	#endif
460	}	492	}
461	}	493	}
462		494
463	static void	495	static void
…		…
602	* of perl.c:init_stacks, except that it uses less memory	634	* of perl.c:init_stacks, except that it uses less memory
603	* on the (sometimes correct) assumption that coroutines do	635	* on the (sometimes correct) assumption that coroutines do
604	* not usually need a lot of stackspace.	636	* not usually need a lot of stackspace.
605	*/	637	*/
606	#if CORO_PREFER_PERL_FUNCTIONS	638	#if CORO_PREFER_PERL_FUNCTIONS
607	# define coro_init_stacks init_stacks	639	# define coro_init_stacks(thx) init_stacks ()
608	#else	640	#else
609	static void	641	static void
610	coro_init_stacks (pTHX)	642	coro_init_stacks (pTHX)
611	{	643	{
612	PL_curstackinfo = new_stackinfo(32, 8);	644	PL_curstackinfo = new_stackinfo(32, 8);
…		…
675	#if !PERL_VERSION_ATLEAST (5,10,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
676	Safefree (PL_retstack);	708	Safefree (PL_retstack);
677	#endif	709	#endif
678	}	710	}
679		711
		712	#define CORO_RSS \
		713	rss += sizeof (SYM (curstackinfo)); \
		714	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		715	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		716	rss += SYM (tmps_max) * sizeof (SV *); \
		717	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		718	rss += SYM (scopestack_max) * sizeof (I32); \
		719	rss += SYM (savestack_max) * sizeof (ANY);
		720
680	static size_t	721	static size_t
681	coro_rss (pTHX_ struct coro *coro)	722	coro_rss (pTHX_ struct coro *coro)
682	{	723	{
683	size_t rss = sizeof (*coro);	724	size_t rss = sizeof (*coro);
684		725
685	if (coro->mainstack)	726	if (coro->mainstack)
686	{	727	{
687	perl_slots tmp_slot;
688	perl_slots *slot;
689
690	if (coro->flags & CF_RUNNING)	728	if (coro->flags & CF_RUNNING)
691	{	729	{
692	slot = &tmp_slot;	730	#define SYM(sym) PL_ ## sym
693		731	CORO_RSS;
694	#define VAR(name,type) slot->name = PL_ ## name;
695	# include "state.h"
696	#undef VAR	732	#undef SYM
697	}	733	}
698	else	734	else
699	slot = coro->slot;
700
701	if (slot)
702	{	735	{
703	rss += sizeof (slot->curstackinfo);	736	#define SYM(sym) coro->slot->sym
704	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	737	CORO_RSS;
705	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	738	#undef SYM
706	rss += slot->tmps_max * sizeof (SV *);
707	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708	rss += slot->scopestack_max * sizeof (I32);
709	rss += slot->savestack_max * sizeof (ANY);
710
711	#if !PERL_VERSION_ATLEAST (5,10,0)
712	rss += slot->retstack_max * sizeof (OP *);
713	#endif
714	}	739	}
715	}	740	}
716		741
717	return rss;	742	return rss;
718	}	743	}
…		…
820	slf_check_nop (pTHX_ struct CoroSLF *frame)	845	slf_check_nop (pTHX_ struct CoroSLF *frame)
821	{	846	{
822	return 0;	847	return 0;
823	}	848	}
824		849
		850	static int
		851	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		852	{
		853	return 1;
		854	}
		855
825	static UNOP coro_setup_op;	856	static UNOP coro_setup_op;
826		857
827	static void NOINLINE /* noinline to keep it out of the transfer fast path */	858	static void NOINLINE /* noinline to keep it out of the transfer fast path */
828	coro_setup (pTHX_ struct coro *coro)	859	coro_setup (pTHX_ struct coro *coro)
829	{	860	{
…		…
860	dSP;	891	dSP;
861	UNOP myop;	892	UNOP myop;
862		893
863	Zero (&myop, 1, UNOP);	894	Zero (&myop, 1, UNOP);
864	myop.op_next = Nullop;	895	myop.op_next = Nullop;
		896	myop.op_type = OP_ENTERSUB;
865	myop.op_flags = OPf_WANT_VOID;	897	myop.op_flags = OPf_WANT_VOID;
866		898
867	PUSHMARK (SP);	899	PUSHMARK (SP);
868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	900	PUSHs ((SV *)coro->startcv);
869	PUTBACK;	901	PUTBACK;
870	PL_op = (OP *)&myop;	902	PL_op = (OP *)&myop;
871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	903	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872	SPAGAIN;
873	}	904	}
874		905
875	/* this newly created coroutine might be run on an existing cctx which most	906	/* this newly created coroutine might be run on an existing cctx which most
876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	907	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877	*/	908	*/
878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	909	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	910	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880		911
881	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	912	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882	coro_setup_op.op_next = PL_op;	913	coro_setup_op.op_next = PL_op;
883	coro_setup_op.op_type = OP_CUSTOM;	914	coro_setup_op.op_type = OP_ENTERSUB;
884	coro_setup_op.op_ppaddr = pp_slf;	915	coro_setup_op.op_ppaddr = pp_slf;
885	/* no flags required, as an init function won't be called */	916	/* no flags etc. required, as an init function won't be called */
886		917
887	PL_op = (OP *)&coro_setup_op;	918	PL_op = (OP *)&coro_setup_op;
888		919
889	/* copy throw, in case it was set before coro_setup */	920	/* copy throw, in case it was set before coro_setup */
890	CORO_THROW = coro->except;	921	CORO_THROW = coro->except;
…		…
919		950
920	SvREFCNT_dec (PL_diehook);	951	SvREFCNT_dec (PL_diehook);
921	SvREFCNT_dec (PL_warnhook);	952	SvREFCNT_dec (PL_warnhook);
922		953
923	SvREFCNT_dec (coro->saved_deffh);	954	SvREFCNT_dec (coro->saved_deffh);
924	SvREFCNT_dec (CORO_THROW);	955	SvREFCNT_dec (coro->rouse_cb);
		956	SvREFCNT_dec (coro->invoke_cb);
		957	SvREFCNT_dec (coro->invoke_av);
925		958
926	coro_destruct_stacks (aTHX);	959	coro_destruct_stacks (aTHX);
927	}	960	}
928		961
929	INLINE void	962	INLINE void
…		…
939	static int	972	static int
940	runops_trace (pTHX)	973	runops_trace (pTHX)
941	{	974	{
942	COP *oldcop = 0;	975	COP *oldcop = 0;
943	int oldcxix = -2;	976	int oldcxix = -2;
944	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945	coro_cctx *cctx = coro->cctx;
946		977
947	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	978	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948	{	979	{
949	PERL_ASYNC_CHECK ();	980	PERL_ASYNC_CHECK ();
950		981
951	if (cctx->flags & CC_TRACE_ALL)	982	if (cctx_current->flags & CC_TRACE_ALL)
952	{	983	{
953	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	984	if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954	{	985	{
955	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	986	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956	SV **bot, **top;	987	SV **bot, **top;
957	AV *av = newAV (); /* return values */	988	AV *av = newAV (); /* return values */
958	SV **cb;	989	SV **cb;
…		…
995		1026
996	if (PL_curcop != &PL_compiling)	1027	if (PL_curcop != &PL_compiling)
997	{	1028	{
998	SV **cb;	1029	SV **cb;
999		1030
1000	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	1031	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001	{	1032	{
1002	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1033	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003		1034
1004	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1035	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005	{	1036	{
1006	runops_proc_t old_runops = PL_runops;
1007	dSP;	1037	dSP;
1008	GV *gv = CvGV (cx->blk_sub.cv);	1038	GV *gv = CvGV (cx->blk_sub.cv);
1009	SV *fullname = sv_2mortal (newSV (0));	1039	SV *fullname = sv_2mortal (newSV (0));
1010		1040
1011	if (isGV (gv))	1041	if (isGV (gv))
…		…
1016	SAVETMPS;	1046	SAVETMPS;
1017	EXTEND (SP, 3);	1047	EXTEND (SP, 3);
1018	PUSHMARK (SP);	1048	PUSHMARK (SP);
1019	PUSHs (&PL_sv_yes);	1049	PUSHs (&PL_sv_yes);
1020	PUSHs (fullname);	1050	PUSHs (fullname);
1021	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1051	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022	PUTBACK;	1052	PUTBACK;
1023	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1053	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1054	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025	SPAGAIN;	1055	SPAGAIN;
1026	FREETMPS;	1056	FREETMPS;
…		…
1029	}	1059	}
1030		1060
1031	oldcxix = cxstack_ix;	1061	oldcxix = cxstack_ix;
1032	}	1062	}
1033		1063
1034	if (cctx->flags & CC_TRACE_LINE)	1064	if (cctx_current->flags & CC_TRACE_LINE)
1035	{	1065	{
1036	dSP;	1066	dSP;
1037		1067
1038	PL_runops = RUNOPS_DEFAULT;	1068	PL_runops = RUNOPS_DEFAULT;
1039	ENTER;	1069	ENTER;
…		…
1058		1088
1059	TAINT_NOT;	1089	TAINT_NOT;
1060	return 0;	1090	return 0;
1061	}	1091	}
1062		1092
1063	static struct coro_cctx *cctx_ssl_cctx;
1064	static struct CoroSLF cctx_ssl_frame;	1093	static struct CoroSLF cctx_ssl_frame;
1065		1094
1066	static void	1095	static void
1067	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	1096	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068	{	1097	{
1069	ta->prev = (struct coro *)cctx_ssl_cctx;
1070	ta->next = 0;	1098	ta->prev = 0;
1071	}	1099	}
1072		1100
1073	static int	1101	static int
1074	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)	1102	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075	{	1103	{
…		…
1078	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */	1106	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079	}	1107	}
1080		1108
1081	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */	1109	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082	static void NOINLINE	1110	static void NOINLINE
1083	cctx_prepare (pTHX_ coro_cctx *cctx)	1111	cctx_prepare (pTHX)
1084	{	1112	{
1085	PL_top_env = &PL_start_env;	1113	PL_top_env = &PL_start_env;
1086		1114
1087	if (cctx->flags & CC_TRACE)	1115	if (cctx_current->flags & CC_TRACE)
1088	PL_runops = runops_trace;	1116	PL_runops = runops_trace;
1089		1117
1090	/* we already must be executing an SLF op, there is no other valid way	1118	/* we already must be executing an SLF op, there is no other valid way
1091	* that can lead to creation of a new cctx */	1119	* that can lead to creation of a new cctx */
1092	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",	1120	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));	1121	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094		1122
1095	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */	1123	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096	cctx_ssl_cctx = cctx;
1097	cctx_ssl_frame = slf_frame;	1124	cctx_ssl_frame = slf_frame;
1098		1125
1099	slf_frame.prepare = slf_prepare_set_stacklevel;	1126	slf_frame.prepare = slf_prepare_set_stacklevel;
1100	slf_frame.check = slf_check_set_stacklevel;	1127	slf_frame.check = slf_check_set_stacklevel;
1101	}	1128	}
…		…
1124	/* normally we would need to skip the entersub here */	1151	/* normally we would need to skip the entersub here */
1125	/* not doing so will re-execute it, which is exactly what we want */	1152	/* not doing so will re-execute it, which is exactly what we want */
1126	/* PL_nop = PL_nop->op_next */	1153	/* PL_nop = PL_nop->op_next */
1127		1154
1128	/* inject a fake subroutine call to cctx_init */	1155	/* inject a fake subroutine call to cctx_init */
1129	cctx_prepare (aTHX_ (coro_cctx *)arg);	1156	cctx_prepare (aTHX);
1130		1157
1131	/* cctx_run is the alternative tail of transfer() */	1158	/* cctx_run is the alternative tail of transfer() */
1132	transfer_tail (aTHX);	1159	transfer_tail (aTHX);
1133		1160
1134	/* somebody or something will hit me for both perl_run and PL_restartop */	1161	/* somebody or something will hit me for both perl_run and PL_restartop */
1135	PL_restartop = PL_op;	1162	PL_restartop = PL_op;
1136	perl_run (PL_curinterp);	1163	perl_run (PL_curinterp);
		1164	/*
		1165	* Unfortunately, there is no way to get at the return values of the
		1166	* coro body here, as perl_run destroys these
		1167	*/
1137		1168
1138	/*	1169	/*
1139	* If perl-run returns we assume exit() was being called or the coro	1170	* If perl-run returns we assume exit() was being called or the coro
1140	* fell off the end, which seems to be the only valid (non-bug)	1171	* fell off the end, which seems to be the only valid (non-bug)
1141	* reason for perl_run to return. We try to exit by jumping to the	1172	* reason for perl_run to return. We try to exit by jumping to the
…		…
1225	cctx_destroy (coro_cctx *cctx)	1256	cctx_destroy (coro_cctx *cctx)
1226	{	1257	{
1227	if (!cctx)	1258	if (!cctx)
1228	return;	1259	return;
1229		1260
		1261	assert (cctx != cctx_current);//D temporary
		1262
1230	--cctx_count;	1263	--cctx_count;
1231	coro_destroy (&cctx->cctx);	1264	coro_destroy (&cctx->cctx);
1232		1265
1233	/* coro_transfer creates new, empty cctx's */	1266	/* coro_transfer creates new, empty cctx's */
1234	if (cctx->sptr)	1267	if (cctx->sptr)
…		…
1297	/* TODO: throwing up here is considered harmful */	1330	/* TODO: throwing up here is considered harmful */
1298		1331
1299	if (expect_true (prev != next))	1332	if (expect_true (prev != next))
1300	{	1333	{
1301	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1334	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1335	croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1303		1336
1304	if (expect_false (next->flags & CF_RUNNING))	1337	if (expect_false (next->flags & CF_RUNNING))
1305	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");	1338	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306		1339
1307	if (expect_false (next->flags & CF_DESTROYED))	1340	if (expect_false (next->flags & CF_DESTROYED))
…		…
1319	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1352	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320	{	1353	{
1321	dSTACKLEVEL;	1354	dSTACKLEVEL;
1322		1355
1323	/* sometimes transfer is only called to set idle_sp */	1356	/* sometimes transfer is only called to set idle_sp */
1324	if (expect_false (!next))	1357	if (expect_false (!prev))
1325	{	1358	{
1326	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1359	cctx_current->idle_sp = STACKLEVEL;
1327	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1360	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328	}	1361	}
1329	else if (expect_true (prev != next))	1362	else if (expect_true (prev != next))
1330	{	1363	{
1331	coro_cctx *prev__cctx;	1364	coro_cctx *cctx_prev;
1332		1365
1333	if (expect_false (prev->flags & CF_NEW))	1366	if (expect_false (prev->flags & CF_NEW))
1334	{	1367	{
1335	/* create a new empty/source context */	1368	/* create a new empty/source context */
1336	prev->cctx = cctx_new_empty ();
1337	prev->flags &= ~CF_NEW;	1369	prev->flags &= ~CF_NEW;
1338	prev->flags |= CF_RUNNING;	1370	prev->flags |= CF_RUNNING;
1339	}	1371	}
1340		1372
1341	prev->flags &= ~CF_RUNNING;	1373	prev->flags &= ~CF_RUNNING;
…		…
1352	coro_setup (aTHX_ next);	1384	coro_setup (aTHX_ next);
1353	}	1385	}
1354	else	1386	else
1355	load_perl (aTHX_ next);	1387	load_perl (aTHX_ next);
1356		1388
1357	prev__cctx = prev->cctx;	1389	assert (!prev->cctx);//D temporary
1358		1390
1359	/* possibly untie and reuse the cctx */	1391	/* possibly untie and reuse the cctx */
1360	if (expect_true (	1392	if (expect_true (
1361	prev__cctx->idle_sp == STACKLEVEL	1393	cctx_current->idle_sp == STACKLEVEL
1362	&& !(prev__cctx->flags & CC_TRACE)	1394	&& !(cctx_current->flags & CC_TRACE)
1363	&& !force_cctx	1395	&& !force_cctx
1364	))	1396	))
1365	{	1397	{
1366	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1398	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1399	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368		1400
1369	prev->cctx = 0;
1370
1371	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1401	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1402	/* without this the next cctx_get might destroy the running cctx while still in use */
1373	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1403	if (expect_false (CCTX_EXPIRED (cctx_current)))
1374	if (!next->cctx)	1404	if (expect_true (!next->cctx))
1375	next->cctx = cctx_get (aTHX);	1405	next->cctx = cctx_get (aTHX);
1376		1406
1377	cctx_put (prev__cctx);	1407	cctx_put (cctx_current);
1378	}	1408	}
		1409	else
		1410	prev->cctx = cctx_current;
1379		1411
1380	++next->usecount;	1412	++next->usecount;
1381		1413
1382	if (expect_true (!next->cctx))	1414	cctx_prev = cctx_current;
1383	next->cctx = cctx_get (aTHX);	1415	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384		1416
1385	if (expect_false (prev__cctx != next->cctx))	1417	next->cctx = 0;
		1418
		1419	if (expect_false (cctx_prev != cctx_current))
1386	{	1420	{
1387	prev__cctx->top_env = PL_top_env;	1421	cctx_prev->top_env = PL_top_env;
1388	PL_top_env = next->cctx->top_env;	1422	PL_top_env = cctx_current->top_env;
1389	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1423	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390	}	1424	}
1391		1425
1392	transfer_tail (aTHX);	1426	transfer_tail (aTHX);
1393	}	1427	}
1394	}	1428	}
…		…
1433		1467
1434	coro->slot = 0;	1468	coro->slot = 0;
1435	}	1469	}
1436		1470
1437	cctx_destroy (coro->cctx);	1471	cctx_destroy (coro->cctx);
		1472	SvREFCNT_dec (coro->startcv);
1438	SvREFCNT_dec (coro->args);	1473	SvREFCNT_dec (coro->args);
		1474	SvREFCNT_dec (CORO_THROW);
1439		1475
1440	if (coro->next) coro->next->prev = coro->prev;	1476	if (coro->next) coro->next->prev = coro->prev;
1441	if (coro->prev) coro->prev->next = coro->next;	1477	if (coro->prev) coro->prev->next = coro->next;
1442	if (coro == coro_first) coro_first = coro->next;	1478	if (coro == coro_first) coro_first = coro->next;
1443		1479
…		…
1497		1533
1498	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1534	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499	TRANSFER (ta, 1);	1535	TRANSFER (ta, 1);
1500	}	1536	}
1501		1537
		1538	/*****************************************************************************/
		1539	/* gensub: simple closure generation utility */
		1540
		1541	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1542
		1543	/* create a closure from XS, returns a code reference */
		1544	/* the arg can be accessed via GENSUB_ARG from the callback */
		1545	/* the callback must use dXSARGS/XSRETURN */
		1546	static SV *
		1547	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1548	{
		1549	CV *cv = (CV *)newSV (0);
		1550
		1551	sv_upgrade ((SV *)cv, SVt_PVCV);
		1552
		1553	CvANON_on (cv);
		1554	CvISXSUB_on (cv);
		1555	CvXSUB (cv) = xsub;
		1556	GENSUB_ARG = arg;
		1557
		1558	return newRV_noinc ((SV *)cv);
		1559	}
		1560
1502	/** Coro ********************************************************************/	1561	/** Coro ********************************************************************/
1503		1562
1504	INLINE void	1563	INLINE void
1505	coro_enq (pTHX_ struct coro *coro)	1564	coro_enq (pTHX_ struct coro *coro)
1506	{	1565	{
…		…
1524	{	1583	{
1525	struct coro *coro;	1584	struct coro *coro;
1526	SV *sv_hook;	1585	SV *sv_hook;
1527	void (*xs_hook)(void);	1586	void (*xs_hook)(void);
1528		1587
1529	if (SvROK (coro_sv))
1530	coro_sv = SvRV (coro_sv);
1531
1532	coro = SvSTATE (coro_sv);	1588	coro = SvSTATE (coro_sv);
1533		1589
1534	if (coro->flags & CF_READY)	1590	if (coro->flags & CF_READY)
1535	return 0;	1591	return 0;
1536		1592
…		…
1567	api_is_ready (pTHX_ SV *coro_sv)	1623	api_is_ready (pTHX_ SV *coro_sv)
1568	{	1624	{
1569	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1625	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570	}	1626	}
1571		1627
		1628	/* expects to own a reference to next->hv */
1572	INLINE void	1629	INLINE void
1573	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1630	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574	{	1631	{
1575	SV *prev_sv, *next_sv;
1576
1577	for (;;)
1578	{
1579	next_sv = coro_deq (aTHX);
1580
1581	/* nothing to schedule: call the idle handler */
1582	if (expect_false (!next_sv))
1583	{
1584	dSP;
1585
1586	ENTER;
1587	SAVETMPS;
1588
1589	PUSHMARK (SP);
1590	PUTBACK;
1591	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593	FREETMPS;
1594	LEAVE;
1595	continue;
1596	}
1597
1598	ta->next = SvSTATE_hv (next_sv);
1599
1600	/* cannot transfer to destroyed coros, skip and look for next */
1601	if (expect_false (ta->next->flags & CF_DESTROYED))
1602	{
1603	SvREFCNT_dec (next_sv);
1604	/* coro_nready has already been taken care of by destroy */
1605	continue;
1606	}
1607
1608	--coro_nready;
1609	break;
1610	}
1611
1612	/* free this only after the transfer */
1613	prev_sv = SvRV (coro_current);	1632	SV *prev_sv = SvRV (coro_current);
		1633
1614	ta->prev = SvSTATE_hv (prev_sv);	1634	ta->prev = SvSTATE_hv (prev_sv);
		1635	ta->next = next;
		1636
1615	TRANSFER_CHECK (*ta);	1637	TRANSFER_CHECK (*ta);
1616	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1638
1617	ta->next->flags &= ~CF_READY;
1618	SvRV_set (coro_current, next_sv);	1639	SvRV_set (coro_current, (SV *)next->hv);
1619		1640
1620	free_coro_mortal (aTHX);	1641	free_coro_mortal (aTHX);
1621	coro_mortal = prev_sv;	1642	coro_mortal = prev_sv;
1622	}	1643	}
1623		1644
		1645	static void
		1646	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
		1647	{
		1648	for (;;)
		1649	{
		1650	SV *next_sv = coro_deq (aTHX);
		1651
		1652	if (expect_true (next_sv))
		1653	{
		1654	struct coro *next = SvSTATE_hv (next_sv);
		1655
		1656	/* cannot transfer to destroyed coros, skip and look for next */
		1657	if (expect_false (next->flags & CF_DESTROYED))
		1658	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
		1659	else
		1660	{
		1661	next->flags &= ~CF_READY;
		1662	--coro_nready;
		1663
		1664	prepare_schedule_to (aTHX_ ta, next);
		1665	break;
		1666	}
		1667	}
		1668	else
		1669	{
		1670	/* nothing to schedule: call the idle handler */
		1671	if (SvROK (sv_idle)
		1672	&& SvOBJECT (SvRV (sv_idle)))
		1673	{
		1674	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
		1675	api_ready (SvRV (sv_idle));
		1676	--coro_nready;
		1677	}
		1678	else
		1679	{
		1680	dSP;
		1681
		1682	ENTER;
		1683	SAVETMPS;
		1684
		1685	PUSHMARK (SP);
		1686	PUTBACK;
		1687	call_sv (sv_idle, G_VOID | G_DISCARD);
		1688
		1689	FREETMPS;
		1690	LEAVE;
		1691	}
		1692	}
		1693	}
		1694	}
		1695
1624	INLINE void	1696	INLINE void
1625	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1697	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626	{	1698	{
1627	api_ready (aTHX_ coro_current);	1699	api_ready (aTHX_ coro_current);
1628	prepare_schedule (aTHX_ ta);	1700	prepare_schedule (aTHX_ ta);
…		…
1647	{	1719	{
1648	struct coro_transfer_args ta;	1720	struct coro_transfer_args ta;
1649		1721
1650	prepare_schedule (aTHX_ &ta);	1722	prepare_schedule (aTHX_ &ta);
1651	TRANSFER (ta, 1);	1723	TRANSFER (ta, 1);
		1724	}
		1725
		1726	static void
		1727	api_schedule_to (pTHX_ SV *coro_sv)
		1728	{
		1729	struct coro_transfer_args ta;
		1730	struct coro *next = SvSTATE (coro_sv);
		1731
		1732	SvREFCNT_inc_NN (coro_sv);
		1733	prepare_schedule_to (aTHX_ &ta, next);
1652	}	1734	}
1653		1735
1654	static int	1736	static int
1655	api_cede (pTHX)	1737	api_cede (pTHX)
1656	{	1738	{
…		…
1685	static void	1767	static void
1686	api_trace (pTHX_ SV *coro_sv, int flags)	1768	api_trace (pTHX_ SV *coro_sv, int flags)
1687	{	1769	{
1688	struct coro *coro = SvSTATE (coro_sv);	1770	struct coro *coro = SvSTATE (coro_sv);
1689		1771
		1772	if (coro->flags & CF_RUNNING)
		1773	croak ("cannot enable tracing on a running coroutine, caught");
		1774
1690	if (flags & CC_TRACE)	1775	if (flags & CC_TRACE)
1691	{	1776	{
1692	if (!coro->cctx)	1777	if (!coro->cctx)
1693	coro->cctx = cctx_new_run ();	1778	coro->cctx = cctx_new_run ();
1694	else if (!(coro->cctx->flags & CC_TRACE))	1779	else if (!(coro->cctx->flags & CC_TRACE))
1695	croak ("cannot enable tracing on coroutine with custom stack,");	1780	croak ("cannot enable tracing on coroutine with custom stack, caught");
1696		1781
1697	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1782	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698	}	1783	}
1699	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1784	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700	{	1785	{
…		…
1703	if (coro->flags & CF_RUNNING)	1788	if (coro->flags & CF_RUNNING)
1704	PL_runops = RUNOPS_DEFAULT;	1789	PL_runops = RUNOPS_DEFAULT;
1705	else	1790	else
1706	coro->slot->runops = RUNOPS_DEFAULT;	1791	coro->slot->runops = RUNOPS_DEFAULT;
1707	}	1792	}
		1793	}
		1794
		1795	static void
		1796	coro_call_on_destroy (pTHX_ struct coro *coro)
		1797	{
		1798	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1799	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1800
		1801	if (on_destroyp)
		1802	{
		1803	AV *on_destroy = (AV *)SvRV (*on_destroyp);
		1804
		1805	while (AvFILLp (on_destroy) >= 0)
		1806	{
		1807	dSP; /* don't disturb outer sp */
		1808	SV *cb = av_pop (on_destroy);
		1809
		1810	PUSHMARK (SP);
		1811
		1812	if (statusp)
		1813	{
		1814	int i;
		1815	AV *status = (AV *)SvRV (*statusp);
		1816	EXTEND (SP, AvFILLp (status) + 1);
		1817
		1818	for (i = 0; i <= AvFILLp (status); ++i)
		1819	PUSHs (AvARRAY (status)[i]);
		1820	}
		1821
		1822	PUTBACK;
		1823	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
		1824	}
		1825	}
		1826	}
		1827
		1828	static void
		1829	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1830	{
		1831	int i;
		1832	HV *hv = (HV *)SvRV (coro_current);
		1833	AV *av = newAV ();
		1834
		1835	av_extend (av, items - 1);
		1836	for (i = 0; i < items; ++i)
		1837	av_push (av, SvREFCNT_inc_NN (arg [i]));
		1838
		1839	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		1840
		1841	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
		1842	api_ready (aTHX_ sv_manager);
		1843
		1844	frame->prepare = prepare_schedule;
		1845	frame->check = slf_check_repeat;
		1846	}
		1847
		1848	/*****************************************************************************/
		1849	/* async pool handler */
		1850
		1851	static int
		1852	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
		1853	{
		1854	HV *hv = (HV *)SvRV (coro_current);
		1855	struct coro *coro = (struct coro *)frame->data;
		1856
		1857	if (!coro->invoke_cb)
		1858	return 1; /* loop till we have invoke */
		1859	else
		1860	{
		1861	hv_store (hv, "desc", sizeof ("desc") - 1,
		1862	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1863
		1864	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1865
		1866	{
		1867	dSP;
		1868	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1869	PUTBACK;
		1870	}
		1871
		1872	SvREFCNT_dec (GvAV (PL_defgv));
		1873	GvAV (PL_defgv) = coro->invoke_av;
		1874	coro->invoke_av = 0;
		1875
		1876	return 0;
		1877	}
		1878	}
		1879
		1880	static void
		1881	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1882	{
		1883	HV *hv = (HV *)SvRV (coro_current);
		1884	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1885
		1886	if (expect_true (coro->saved_deffh))
		1887	{
		1888	/* subsequent iteration */
		1889	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1890	coro->saved_deffh = 0;
		1891
		1892	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1893	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1894	{
		1895	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1896	coro->invoke_av = newAV ();
		1897
		1898	frame->prepare = prepare_nop;
		1899	}
		1900	else
		1901	{
		1902	av_clear (GvAV (PL_defgv));
		1903	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1904
		1905	coro->prio = 0;
		1906
		1907	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1908	api_trace (aTHX_ coro_current, 0);
		1909
		1910	frame->prepare = prepare_schedule;
		1911	av_push (av_async_pool, SvREFCNT_inc (hv));
		1912	}
		1913	}
		1914	else
		1915	{
		1916	/* first iteration, simply fall through */
		1917	frame->prepare = prepare_nop;
		1918	}
		1919
		1920	frame->check = slf_check_pool_handler;
		1921	frame->data = (void *)coro;
		1922	}
		1923
		1924	/*****************************************************************************/
		1925	/* rouse callback */
		1926
		1927	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1928
		1929	static void
		1930	coro_rouse_callback (pTHX_ CV *cv)
		1931	{
		1932	dXSARGS;
		1933	SV *data = (SV *)GENSUB_ARG;
		1934
		1935	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1936	{
		1937	/* first call, set args */
		1938	AV *av = newAV ();
		1939	SV *coro = SvRV (data);
		1940
		1941	SvRV_set (data, (SV *)av);
		1942	api_ready (aTHX_ coro);
		1943	SvREFCNT_dec (coro);
		1944
		1945	/* better take a full copy of the arguments */
		1946	while (items--)
		1947	av_store (av, items, newSVsv (ST (items)));
		1948	}
		1949
		1950	XSRETURN_EMPTY;
		1951	}
		1952
		1953	static int
		1954	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1955	{
		1956	SV *data = (SV *)frame->data;
		1957
		1958	if (CORO_THROW)
		1959	return 0;
		1960
		1961	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1962	return 1;
		1963
		1964	/* now push all results on the stack */
		1965	{
		1966	dSP;
		1967	AV *av = (AV *)SvRV (data);
		1968	int i;
		1969
		1970	EXTEND (SP, AvFILLp (av) + 1);
		1971	for (i = 0; i <= AvFILLp (av); ++i)
		1972	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1973
		1974	/* we have stolen the elements, so ste length to zero and free */
		1975	AvFILLp (av) = -1;
		1976	av_undef (av);
		1977
		1978	PUTBACK;
		1979	}
		1980
		1981	return 0;
		1982	}
		1983
		1984	static void
		1985	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1986	{
		1987	SV *cb;
		1988
		1989	if (items)
		1990	cb = arg [0];
		1991	else
		1992	{
		1993	struct coro *coro = SvSTATE_current;
		1994
		1995	if (!coro->rouse_cb)
		1996	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1997
		1998	cb = sv_2mortal (coro->rouse_cb);
		1999	coro->rouse_cb = 0;
		2000	}
		2001
		2002	if (!SvROK (cb)
		2003	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		2004	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		2005	croak ("Coro::rouse_wait called with illegal callback argument,");
		2006
		2007	{
		2008	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		2009	SV *data = (SV *)GENSUB_ARG;
		2010
		2011	frame->data = (void *)data;
		2012	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		2013	frame->check = slf_check_rouse_wait;
		2014	}
		2015	}
		2016
		2017	static SV *
		2018	coro_new_rouse_cb (pTHX)
		2019	{
		2020	HV *hv = (HV *)SvRV (coro_current);
		2021	struct coro *coro = SvSTATE_hv (hv);
		2022	SV *data = newRV_inc ((SV *)hv);
		2023	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		2024
		2025	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		2026	SvREFCNT_dec (data); /* magicext increases the refcount */
		2027
		2028	SvREFCNT_dec (coro->rouse_cb);
		2029	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		2030
		2031	return cb;
1708	}	2032	}
1709		2033
1710	/*****************************************************************************/	2034	/*****************************************************************************/
1711	/* schedule-like-function opcode (SLF) */	2035	/* schedule-like-function opcode (SLF) */
1712		2036
…		…
1759	static void	2083	static void
1760	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2084	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761	{	2085	{
1762	frame->prepare = prepare_schedule;	2086	frame->prepare = prepare_schedule;
1763	frame->check = slf_check_nop;	2087	frame->check = slf_check_nop;
		2088	}
		2089
		2090	static void
		2091	slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
		2092	{
		2093	struct coro *next = (struct coro *)slf_frame.data;
		2094
		2095	SvREFCNT_inc_NN (next->hv);
		2096	prepare_schedule_to (aTHX_ ta, next);
		2097	}
		2098
		2099	static void
		2100	slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2101	{
		2102	if (!items)
		2103	croak ("Coro::schedule_to expects a coroutine argument, caught");
		2104
		2105	frame->data = (void *)SvSTATE (arg [0]);
		2106	frame->prepare = slf_prepare_schedule_to;
		2107	frame->check = slf_check_nop;
		2108	}
		2109
		2110	static void
		2111	slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2112	{
		2113	api_ready (aTHX_ SvRV (coro_current));
		2114
		2115	slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1764	}	2116	}
1765		2117
1766	static void	2118	static void
1767	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2119	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768	{	2120	{
…		…
1914	}	2266	}
1915	else	2267	else
1916	slf_argc = 0;	2268	slf_argc = 0;
1917		2269
1918	PL_op->op_ppaddr = pp_slf;	2270	PL_op->op_ppaddr = pp_slf;
1919	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */	2271	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920		2272
1921	PL_op = (OP *)&slf_restore;	2273	PL_op = (OP *)&slf_restore;
1922	}	2274	}
1923		2275
1924	/*****************************************************************************/	2276	/*****************************************************************************/
…		…
1995	PerlIOBuf_get_cnt,	2347	PerlIOBuf_get_cnt,
1996	PerlIOBuf_set_ptrcnt,	2348	PerlIOBuf_set_ptrcnt,
1997	};	2349	};
1998		2350
1999	/*****************************************************************************/	2351	/*****************************************************************************/
		2352	/* Coro::Semaphore & Coro::Signal */
		2353
		2354	static SV *
		2355	coro_waitarray_new (pTHX_ int count)
		2356	{
		2357	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2358	AV *av = newAV ();
		2359	SV **ary;
		2360
		2361	/* unfortunately, building manually saves memory */
		2362	Newx (ary, 2, SV *);
		2363	AvALLOC (av) = ary;
		2364	/*AvARRAY (av) = ary;*/
		2365	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2366	AvMAX (av) = 1;
		2367	AvFILLp (av) = 0;
		2368	ary [0] = newSViv (count);
		2369
		2370	return newRV_noinc ((SV *)av);
		2371	}
		2372
2000	/* Coro::Semaphore */	2373	/* semaphore */
2001		2374
2002	static void	2375	static void
2003	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2376	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004	{	2377	{
2005	SV *count_sv = AvARRAY (av)[0];	2378	SV *count_sv = AvARRAY (av)[0];
…		…
2017	AvARRAY (av)[0] = AvARRAY (av)[1];	2390	AvARRAY (av)[0] = AvARRAY (av)[1];
2018	AvARRAY (av)[1] = count_sv;	2391	AvARRAY (av)[1] = count_sv;
2019	cb = av_shift (av);	2392	cb = av_shift (av);
2020		2393
2021	if (SvOBJECT (cb))	2394	if (SvOBJECT (cb))
		2395	{
2022	api_ready (aTHX_ cb);	2396	api_ready (aTHX_ cb);
2023	else	2397	--count;
2024	croak ("callbacks not yet supported");	2398	}
		2399	else if (SvTYPE (cb) == SVt_PVCV)
		2400	{
		2401	dSP;
		2402	PUSHMARK (SP);
		2403	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2404	PUTBACK;
		2405	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2406	}
2025		2407
2026	SvREFCNT_dec (cb);	2408	SvREFCNT_dec (cb);
2027
2028	--count;
2029	}	2409	}
2030	}	2410	}
2031		2411
2032	static void	2412	static void
2033	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2413	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
…		…
2035	/* call $sem->adjust (0) to possibly wake up some other waiters */	2415	/* call $sem->adjust (0) to possibly wake up some other waiters */
2036	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2416	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037	}	2417	}
2038		2418
2039	static int	2419	static int
2040	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2420	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2041	{	2421	{
2042	AV *av = (AV *)frame->data;	2422	AV *av = (AV *)frame->data;
2043	SV *count_sv = AvARRAY (av)[0];	2423	SV *count_sv = AvARRAY (av)[0];
2044		2424
2045	/* if we are about to throw, don't actually acquire the lock, just throw */	2425	/* if we are about to throw, don't actually acquire the lock, just throw */
2046	if (CORO_THROW)	2426	if (CORO_THROW)
2047	return 0;	2427	return 0;
2048	else if (SvIVX (count_sv) > 0)	2428	else if (SvIVX (count_sv) > 0)
2049	{	2429	{
2050	SvSTATE_current->on_destroy = 0;	2430	SvSTATE_current->on_destroy = 0;
		2431
		2432	if (acquire)
2051	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2433	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2434	else
		2435	coro_semaphore_adjust (aTHX_ av, 0);
		2436
2052	return 0;	2437	return 0;
2053	}	2438	}
2054	else	2439	else
2055	{	2440	{
2056	int i;	2441	int i;
…		…
2065	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2450	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2066	return 1;	2451	return 1;
2067	}	2452	}
2068	}	2453	}
2069		2454
2070	static void	2455	static int
		2456	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2457	{
		2458	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2459	}
		2460
		2461	static int
		2462	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2463	{
		2464	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2465	}
		2466
		2467	static void
2071	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2468	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2072	{	2469	{
2073	AV *av = (AV *)SvRV (arg [0]);	2470	AV *av = (AV *)SvRV (arg [0]);
2074		2471
2075	if (SvIVX (AvARRAY (av)[0]) > 0)	2472	if (SvIVX (AvARRAY (av)[0]) > 0)
2076	{	2473	{
…		…
2086		2483
2087	/* to avoid race conditions when a woken-up coro gets terminated */	2484	/* to avoid race conditions when a woken-up coro gets terminated */
2088	/* we arrange for a temporary on_destroy that calls adjust (0) */	2485	/* we arrange for a temporary on_destroy that calls adjust (0) */
2089	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2486	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090	}	2487	}
		2488	}
2091		2489
		2490	static void
		2491	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2492	{
		2493	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092	frame->check = slf_check_semaphore_down;	2494	frame->check = slf_check_semaphore_down;
2093
2094	}	2495	}
2095		2496
2096	/*****************************************************************************/	2497	static void
2097	/* gensub: simple closure generation utility */	2498	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	{	2499	{
2107	CV *cv = (CV *)newSV (0);	2500	if (items >= 2)
		2501	{
		2502	/* callback form */
		2503	AV *av = (AV *)SvRV (arg [0]);
		2504	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2108		2505
2109	sv_upgrade ((SV *)cv, SVt_PVCV);	2506	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2110		2507
2111	CvANON_on (cv);	2508	if (SvIVX (AvARRAY (av)[0]) > 0)
2112	CvISXSUB_on (cv);	2509	coro_semaphore_adjust (aTHX_ av, 0);
2113	CvXSUB (cv) = xsub;
2114	GENSUB_ARG = arg;
2115		2510
2116	return newRV_noinc ((SV *)cv);	2511	frame->prepare = prepare_nop;
		2512	frame->check = slf_check_nop;
		2513	}
		2514	else
		2515	{
		2516	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2517	frame->check = slf_check_semaphore_wait;
		2518	}
		2519	}
		2520
		2521	/* signal */
		2522
		2523	static void
		2524	coro_signal_wake (pTHX_ AV *av, int count)
		2525	{
		2526	SvIVX (AvARRAY (av)[0]) = 0;
		2527
		2528	/* now signal count waiters */
		2529	while (count > 0 && AvFILLp (av) > 0)
		2530	{
		2531	SV *cb;
		2532
		2533	/* swap first two elements so we can shift a waiter */
		2534	cb = AvARRAY (av)[0];
		2535	AvARRAY (av)[0] = AvARRAY (av)[1];
		2536	AvARRAY (av)[1] = cb;
		2537
		2538	cb = av_shift (av);
		2539
		2540	api_ready (aTHX_ cb);
		2541	sv_setiv (cb, 0); /* signal waiter */
		2542	SvREFCNT_dec (cb);
		2543
		2544	--count;
		2545	}
		2546	}
		2547
		2548	static int
		2549	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2550	{
		2551	/* if we are about to throw, also stop waiting */
		2552	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2553	}
		2554
		2555	static void
		2556	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2557	{
		2558	AV *av = (AV *)SvRV (arg [0]);
		2559
		2560	if (SvIVX (AvARRAY (av)[0]))
		2561	{
		2562	SvIVX (AvARRAY (av)[0]) = 0;
		2563	frame->prepare = prepare_nop;
		2564	frame->check = slf_check_nop;
		2565	}
		2566	else
		2567	{
		2568	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2569
		2570	av_push (av, waiter);
		2571
		2572	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2573	frame->prepare = prepare_schedule;
		2574	frame->check = slf_check_signal_wait;
		2575	}
2117	}	2576	}
2118		2577
2119	/*****************************************************************************/	2578	/*****************************************************************************/
2120	/* Coro::AIO */	2579	/* Coro::AIO */
2121		2580
…		…
2136	dXSARGS;	2595	dXSARGS;
2137	AV *state = (AV *)GENSUB_ARG;	2596	AV *state = (AV *)GENSUB_ARG;
2138	SV *coro = av_pop (state);	2597	SV *coro = av_pop (state);
2139	SV *data_sv = newSV (sizeof (struct io_state));	2598	SV *data_sv = newSV (sizeof (struct io_state));
2140		2599
2141	av_extend (state, items);	2600	av_extend (state, items - 1);
2142		2601
2143	sv_upgrade (data_sv, SVt_PV);	2602	sv_upgrade (data_sv, SVt_PV);
2144	SvCUR_set (data_sv, sizeof (struct io_state));	2603	SvCUR_set (data_sv, sizeof (struct io_state));
2145	SvPOK_only (data_sv);	2604	SvPOK_only (data_sv);
2146		2605
…		…
2281	XSRETURN_EMPTY;	2740	XSRETURN_EMPTY;
2282	}	2741	}
2283		2742
2284	/*****************************************************************************/	2743	/*****************************************************************************/
2285		2744
		2745	#if CORO_CLONE
		2746	# include "clone.c"
		2747	#endif
		2748
2286	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2749	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2287		2750
2288	PROTOTYPES: DISABLE	2751	PROTOTYPES: DISABLE
2289		2752
2290	BOOT:	2753	BOOT:
…		…
2294	coro_thx = PERL_GET_CONTEXT;	2757	coro_thx = PERL_GET_CONTEXT;
2295	# endif	2758	# endif
2296	#endif	2759	#endif
2297	BOOT_PAGESIZE;	2760	BOOT_PAGESIZE;
2298		2761
		2762	cctx_current = cctx_new_empty ();
		2763
2299	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	2764	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2300	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	2765	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2301		2766
2302	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	2767	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2303	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	2768	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
…		…
2322		2787
2323	{	2788	{
2324	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	2789	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2325		2790
2326	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	2791	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2327	hv_store_ent (PL_custom_op_names, slf,	2792	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2328	newSVpv ("coro_slf", 0), 0);
2329		2793
2330	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	2794	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2331	hv_store_ent (PL_custom_op_descs, slf,	2795	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2332	newSVpv ("coro schedule like function", 0), 0);
2333	}	2796	}
2334		2797
2335	coroapi.ver = CORO_API_VERSION;	2798	coroapi.ver = CORO_API_VERSION;
2336	coroapi.rev = CORO_API_REVISION;	2799	coroapi.rev = CORO_API_REVISION;
2337		2800
…		…
2356	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2819	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2357	}	2820	}
2358		2821
2359	SV *	2822	SV *
2360	new (char *klass, ...)	2823	new (char *klass, ...)
		2824	ALIAS:
		2825	Coro::new = 1
2361	CODE:	2826	CODE:
2362	{	2827	{
2363	struct coro *coro;	2828	struct coro *coro;
2364	MAGIC *mg;	2829	MAGIC *mg;
2365	HV *hv;	2830	HV *hv;
		2831	CV *cb;
2366	int i;	2832	int i;
		2833
		2834	if (items > 1)
		2835	{
		2836	cb = coro_sv_2cv (aTHX_ ST (1));
		2837
		2838	if (!ix)
		2839	{
		2840	if (CvISXSUB (cb))
		2841	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2842
		2843	if (!CvROOT (cb))
		2844	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2845	}
		2846	}
2367		2847
2368	Newz (0, coro, 1, struct coro);	2848	Newz (0, coro, 1, struct coro);
2369	coro->args = newAV ();	2849	coro->args = newAV ();
2370	coro->flags = CF_NEW;	2850	coro->flags = CF_NEW;
2371		2851
…		…
2376	coro->hv = hv = newHV ();	2856	coro->hv = hv = newHV ();
2377	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2857	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2378	mg->mg_flags |= MGf_DUP;	2858	mg->mg_flags |= MGf_DUP;
2379	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2859	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2380		2860
		2861	if (items > 1)
		2862	{
2381	av_extend (coro->args, items - 1);	2863	av_extend (coro->args, items - 1 + ix - 1);
		2864
		2865	if (ix)
		2866	{
		2867	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2868	cb = cv_coro_run;
		2869	}
		2870
		2871	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2872
2382	for (i = 1; i < items; i++)	2873	for (i = 2; i < items; i++)
2383	av_push (coro->args, newSVsv (ST (i)));	2874	av_push (coro->args, newSVsv (ST (i)));
		2875	}
2384	}	2876	}
2385	OUTPUT:	2877	OUTPUT:
2386	RETVAL	2878	RETVAL
2387		2879
2388	void	2880	void
…		…
2401	void	2893	void
2402	_exit (int code)	2894	_exit (int code)
2403	PROTOTYPE: $	2895	PROTOTYPE: $
2404	CODE:	2896	CODE:
2405	_exit (code);	2897	_exit (code);
		2898
		2899	SV *
		2900	clone (Coro::State coro)
		2901	CODE:
		2902	{
		2903	#if CORO_CLONE
		2904	struct coro *ncoro = coro_clone (coro);
		2905	MAGIC *mg;
		2906	/* TODO: too much duplication */
		2907	ncoro->hv = newHV ();
		2908	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
		2909	mg->mg_flags |= MGf_DUP;
		2910	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		2911	#else
		2912	croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
		2913	#endif
		2914	}
		2915	OUTPUT:
		2916	RETVAL
2406		2917
2407	int	2918	int
2408	cctx_stacksize (int new_stacksize = 0)	2919	cctx_stacksize (int new_stacksize = 0)
2409	PROTOTYPE: ;$	2920	PROTOTYPE: ;$
2410	CODE:	2921	CODE:
…		…
2531		3042
2532	SV *	3043	SV *
2533	has_cctx (Coro::State coro)	3044	has_cctx (Coro::State coro)
2534	PROTOTYPE: $	3045	PROTOTYPE: $
2535	CODE:	3046	CODE:
2536	RETVAL = boolSV (!!coro->cctx);	3047	/* maybe manage the running flag differently */
		3048	RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2537	OUTPUT:	3049	OUTPUT:
2538	RETVAL	3050	RETVAL
2539		3051
2540	int	3052	int
2541	is_traced (Coro::State coro)	3053	is_traced (Coro::State coro)
…		…
2561		3073
2562	void	3074	void
2563	force_cctx ()	3075	force_cctx ()
2564	PROTOTYPE:	3076	PROTOTYPE:
2565	CODE:	3077	CODE:
2566	SvSTATE_current->cctx->idle_sp = 0;	3078	cctx_current->idle_sp = 0;
2567		3079
2568	void	3080	void
2569	swap_defsv (Coro::State self)	3081	swap_defsv (Coro::State self)
2570	PROTOTYPE: $	3082	PROTOTYPE: $
2571	ALIAS:	3083	ALIAS:
…		…
2586		3098
2587	BOOT:	3099	BOOT:
2588	{	3100	{
2589	int i;	3101	int i;
2590		3102
2591	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2592	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3103	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2593	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3104	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2594		3105	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		3106	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2595	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	3107	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2596	SvREADONLY_on (coro_current);	3108	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3109	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3110	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3111	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
		3112
		3113	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		3114	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		3115	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
		3116	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2597		3117
2598	coro_stash = gv_stashpv ("Coro", TRUE);	3118	coro_stash = gv_stashpv ("Coro", TRUE);
2599		3119
2600	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3120	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2601	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3121	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2609		3129
2610	{	3130	{
2611	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3131	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2612		3132
2613	coroapi.schedule = api_schedule;	3133	coroapi.schedule = api_schedule;
		3134	coroapi.schedule_to = api_schedule_to;
2614	coroapi.cede = api_cede;	3135	coroapi.cede = api_cede;
2615	coroapi.cede_notself = api_cede_notself;	3136	coroapi.cede_notself = api_cede_notself;
2616	coroapi.ready = api_ready;	3137	coroapi.ready = api_ready;
2617	coroapi.is_ready = api_is_ready;	3138	coroapi.is_ready = api_is_ready;
2618	coroapi.nready = coro_nready;	3139	coroapi.nready = coro_nready;
…		…
2623	SvREADONLY_on (sv);	3144	SvREADONLY_on (sv);
2624	}	3145	}
2625	}	3146	}
2626		3147
2627	void	3148	void
		3149	terminate (...)
		3150	CODE:
		3151	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3152
		3153	void
2628	schedule (...)	3154	schedule (...)
2629	CODE:	3155	CODE:
2630	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3156	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		3157
		3158	void
		3159	schedule_to (...)
		3160	CODE:
		3161	CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
		3162
		3163	void
		3164	cede_to (...)
		3165	CODE:
		3166	CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2631		3167
2632	void	3168	void
2633	cede (...)	3169	cede (...)
2634	CODE:	3170	CODE:
2635	CORO_EXECUTE_SLF_XS (slf_init_cede);	3171	CORO_EXECUTE_SLF_XS (slf_init_cede);
2636		3172
2637	void	3173	void
2638	cede_notself (...)	3174	cede_notself (...)
2639	CODE:	3175	CODE:
2640	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3176	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
		3177
		3178	void
		3179	_cancel (Coro::State self)
		3180	CODE:
		3181	coro_state_destroy (aTHX_ self);
		3182	coro_call_on_destroy (aTHX_ self);
2641		3183
2642	void	3184	void
2643	_set_current (SV *current)	3185	_set_current (SV *current)
2644	PROTOTYPE: $	3186	PROTOTYPE: $
2645	CODE:	3187	CODE:
…		…
2690	CODE:	3232	CODE:
2691	RETVAL = coro_nready;	3233	RETVAL = coro_nready;
2692	OUTPUT:	3234	OUTPUT:
2693	RETVAL	3235	RETVAL
2694		3236
2695	# for async_pool speedup
2696	void	3237	void
2697	_pool_1 (SV *cb)	3238	_pool_handler (...)
2698	CODE:	3239	CODE:
2699	{	3240	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2700	HV *hv = (HV *)SvRV (coro_current);
2701	struct coro *coro = SvSTATE_hv ((SV *)hv);
2702	AV *defav = GvAV (PL_defgv);
2703	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2704	AV *invoke_av;
2705	int i, len;
2706		3241
2707	if (!invoke)	3242	void
		3243	async_pool (SV *cv, ...)
		3244	PROTOTYPE: &@
		3245	PPCODE:
		3246	{
		3247	HV *hv = (HV *)av_pop (av_async_pool);
		3248	AV *av = newAV ();
		3249	SV *cb = ST (0);
		3250	int i;
		3251
		3252	av_extend (av, items - 2);
		3253	for (i = 1; i < items; ++i)
		3254	av_push (av, SvREFCNT_inc_NN (ST (i)));
		3255
		3256	if ((SV *)hv == &PL_sv_undef)
2708	{	3257	{
2709	SV *old = PL_diehook;	3258	PUSHMARK (SP);
2710	PL_diehook = 0;	3259	EXTEND (SP, 2);
2711	SvREFCNT_dec (old);	3260	PUSHs (sv_Coro);
2712	croak ("\3async_pool terminate\2\n");	3261	PUSHs ((SV *)cv_pool_handler);
		3262	PUTBACK;
		3263	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
		3264	SPAGAIN;
		3265
		3266	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2713	}	3267	}
2714		3268
2715	SvREFCNT_dec (coro->saved_deffh);
2716	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2717
2718	hv_store (hv, "desc", sizeof ("desc") - 1,
2719	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2720
2721	invoke_av = (AV *)SvRV (invoke);
2722	len = av_len (invoke_av);
2723
2724	sv_setsv (cb, AvARRAY (invoke_av)[0]);
2725
2726	if (len > 0)
2727	{	3269	{
2728	av_fill (defav, len - 1);	3270	struct coro *coro = SvSTATE_hv (hv);
2729	for (i = 0; i < len; ++i)	3271
2730	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	3272	assert (!coro->invoke_cb);
		3273	assert (!coro->invoke_av);
		3274	coro->invoke_cb = SvREFCNT_inc (cb);
		3275	coro->invoke_av = av;
2731	}	3276	}
		3277
		3278	api_ready (aTHX_ (SV *)hv);
		3279
		3280	if (GIMME_V != G_VOID)
		3281	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3282	else
		3283	SvREFCNT_dec (hv);
2732	}	3284	}
		3285
		3286	SV *
		3287	rouse_cb ()
		3288	PROTOTYPE:
		3289	CODE:
		3290	RETVAL = coro_new_rouse_cb (aTHX);
		3291	OUTPUT:
		3292	RETVAL
2733		3293
2734	void	3294	void
2735	_pool_2 (SV *cb)	3295	rouse_wait (...)
		3296	PROTOTYPE: ;$
2736	CODE:	3297	PPCODE:
2737	{	3298	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2738	HV *hv = (HV *)SvRV (coro_current);
2739	struct coro *coro = SvSTATE_hv ((SV *)hv);
2740
2741	sv_setsv (cb, &PL_sv_undef);
2742
2743	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2744	coro->saved_deffh = 0;
2745
2746	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2747	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2748	{
2749	SV *old = PL_diehook;
2750	PL_diehook = 0;
2751	SvREFCNT_dec (old);
2752	croak ("\3async_pool terminate\2\n");
2753	}
2754
2755	av_clear (GvAV (PL_defgv));
2756	hv_store (hv, "desc", sizeof ("desc") - 1,
2757	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2758
2759	coro->prio = 0;
2760
2761	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2762	api_trace (aTHX_ coro_current, 0);
2763
2764	av_push (av_async_pool, newSVsv (coro_current));
2765	}
2766		3299
2767		3300
2768	MODULE = Coro::State PACKAGE = PerlIO::cede	3301	MODULE = Coro::State PACKAGE = PerlIO::cede
2769		3302
2770	BOOT:	3303	BOOT:
…		…
2772		3305
2773		3306
2774	MODULE = Coro::State PACKAGE = Coro::Semaphore	3307	MODULE = Coro::State PACKAGE = Coro::Semaphore
2775		3308
2776	SV *	3309	SV *
2777	new (SV *klass, SV *count_ = 0)	3310	new (SV *klass, SV *count = 0)
2778	CODE:	3311	CODE:
2779	{	3312	RETVAL = sv_bless (
2780	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3313	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2781	AV *av = newAV ();	3314	GvSTASH (CvGV (cv))
2782	SV **ary;	3315	);
		3316	OUTPUT:
		3317	RETVAL
2783		3318
2784	/* unfortunately, building manually saves memory */	3319	# helper for Coro::Channel
2785	Newx (ary, 2, SV *);	3320	SV *
2786	AvALLOC (av) = ary;	3321	_alloc (int count)
2787	AvARRAY (av) = ary;	3322	CODE:
2788	AvMAX (av) = 1;	3323	RETVAL = coro_waitarray_new (aTHX_ count);
2789	AvFILLp (av) = 0;
2790	ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2791
2792	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2793	}
2794	OUTPUT:	3324	OUTPUT:
2795	RETVAL	3325	RETVAL
2796		3326
2797	SV *	3327	SV *
2798	count (SV *self)	3328	count (SV *self)
…		…
2807	adjust = 1	3337	adjust = 1
2808	CODE:	3338	CODE:
2809	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3339	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2810		3340
2811	void	3341	void
2812	down (SV *self)	3342	down (...)
2813	CODE:	3343	CODE:
2814	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);	3344	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3345
		3346	void
		3347	wait (...)
		3348	CODE:
		3349	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2815		3350
2816	void	3351	void
2817	try (SV *self)	3352	try (SV *self)
2818	PPCODE:	3353	PPCODE:
2819	{	3354	{
…		…
2831	XSRETURN_NO;	3366	XSRETURN_NO;
2832	}	3367	}
2833		3368
2834	void	3369	void
2835	waiters (SV *self)	3370	waiters (SV *self)
2836	CODE:	3371	PPCODE:
2837	{	3372	{
2838	AV *av = (AV *)SvRV (self);	3373	AV *av = (AV *)SvRV (self);
		3374	int wcount = AvFILLp (av) + 1 - 1;
2839		3375
2840	if (GIMME_V == G_SCALAR)	3376	if (GIMME_V == G_SCALAR)
2841	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3377	XPUSHs (sv_2mortal (newSViv (wcount)));
2842	else	3378	else
2843	{	3379	{
2844	int i;	3380	int i;
2845	EXTEND (SP, AvFILLp (av) + 1 - 1);	3381	EXTEND (SP, wcount);
2846	for (i = 1; i <= AvFILLp (av); ++i)	3382	for (i = 1; i <= wcount; ++i)
2847	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3383	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2848	}	3384	}
2849	}	3385	}
		3386
		3387	MODULE = Coro::State PACKAGE = Coro::Signal
		3388
		3389	SV *
		3390	new (SV *klass)
		3391	CODE:
		3392	RETVAL = sv_bless (
		3393	coro_waitarray_new (aTHX_ 0),
		3394	GvSTASH (CvGV (cv))
		3395	);
		3396	OUTPUT:
		3397	RETVAL
		3398
		3399	void
		3400	wait (...)
		3401	CODE:
		3402	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3403
		3404	void
		3405	broadcast (SV *self)
		3406	CODE:
		3407	{
		3408	AV *av = (AV *)SvRV (self);
		3409	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3410	}
		3411
		3412	void
		3413	send (SV *self)
		3414	CODE:
		3415	{
		3416	AV *av = (AV *)SvRV (self);
		3417
		3418	if (AvFILLp (av))
		3419	coro_signal_wake (aTHX_ av, 1);
		3420	else
		3421	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3422	}
		3423
		3424	IV
		3425	awaited (SV *self)
		3426	CODE:
		3427	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3428	OUTPUT:
		3429	RETVAL
2850		3430
2851		3431
2852	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3432	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2853		3433
2854	BOOT:	3434	BOOT:
…		…
2882		3462
2883	void	3463	void
2884	_register (char *target, char *proto, SV *req)	3464	_register (char *target, char *proto, SV *req)
2885	CODE:	3465	CODE:
2886	{	3466	{
2887	HV *st;	3467	CV *req_cv = coro_sv_2cv (aTHX_ req);
2888	GV *gvp;
2889	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890	/* newXSproto doesn't return the CV on 5.8 */	3468	/* newXSproto doesn't return the CV on 5.8 */
2891	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3469	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892	sv_setpv ((SV *)slf_cv, proto);	3470	sv_setpv ((SV *)slf_cv, proto);
2893	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3471	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894	}	3472	}

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