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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.303 by root, Wed Nov 19 05:52:42 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
…		…
95	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
96	#endif	96	#endif
97	#ifndef newSV	97	#ifndef newSV
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
		100	#ifndef CvISXSUB_on
		101	# define CvISXSUB_on(cv) (void)cv
		102	#endif
100		103
101	/* 5.8.7 */	104	/* 5.8.7 */
102	#ifndef SvRV_set	105	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	107	#endif
…		…
117	#endif	120	#endif
118		121
119	/* The next macros try to return the current stack pointer, in an as	122	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	123	* portable way as possible. */
121	#if __GNUC__ >= 4	124	#if __GNUC__ >= 4
		125	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	126	# define STACKLEVEL __builtin_frame_address (0)
123	#else	127	#else
124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	128	# define dSTACKLEVEL volatile void *stacklevel
		129	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	130	#endif
126		131
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	132	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		133
129	#if __GNUC__ >= 3	134	#if __GNUC__ >= 3
…		…
140	#define expect_true(expr) expect ((expr) != 0, 1)	145	#define expect_true(expr) expect ((expr) != 0, 1)
141		146
142	#define NOINLINE attribute ((noinline))	147	#define NOINLINE attribute ((noinline))
143		148
144	#include "CoroAPI.h"	149	#include "CoroAPI.h"
		150	#define GCoroAPI (&coroapi) /* very sneaky */
145		151
146	#ifdef USE_ITHREADS	152	#ifdef USE_ITHREADS
147
148	static perl_mutex coro_lock;
149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151	# if CORO_PTHREAD	153	# if CORO_PTHREAD
152	static void *coro_thx;	154	static void *coro_thx;
153	# endif	155	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	156	#endif
161
162	# undef LOCK
163	# define LOCK (void)0
164	# undef UNLOCK
165	# define UNLOCK (void)0
166
167	/* helper storage struct for Coro::AIO */
168	struct io_state
169	{
170	AV *res;
171	int errorno;
172	I32 laststype; /* U16 in 5.10.0 */
173	int laststatval;
174	Stat_t statcache;
175	};
176		157
177	static double (*nvtime)(); /* so why doesn't it take void? */	158	static double (*nvtime)(); /* so why doesn't it take void? */
		159
		160	/* we hijack an hopefully unused CV flag for our purposes */
		161	#define CVf_SLF 0x4000
		162	static OP *pp_slf (pTHX);
178		163
179	static U32 cctx_gen;	164	static U32 cctx_gen;
180	static size_t cctx_stacksize = CORO_STACKSIZE;	165	static size_t cctx_stacksize = CORO_STACKSIZE;
181	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
182	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
183	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
184	static HV *coro_state_stash, *coro_stash;	169	static HV *coro_state_stash, *coro_stash;
185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	170	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;
187		171
188	static GV *irsgv; /* $/ */	172	static GV *irsgv; /* $/ */
189	static GV *stdoutgv; /* *STDOUT */	173	static GV *stdoutgv; /* *STDOUT */
190	static SV *rv_diehook;	174	static SV *rv_diehook;
191	static SV *rv_warnhook;	175	static SV *rv_warnhook;
…		…
252	#undef VAR	236	#undef VAR
253	} perl_slots;	237	} perl_slots;
254		238
255	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	239	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256		240
257	/* this is the per-perl-coro slf frame info */
258	/* it is treated like other "global" interpreter data */
259	/* and unfortunately is copied around, so kepe it small */
260	struct slf_frame
261	{
262	void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263	int (*check) (pTHX);
264	};
265
266	/* this is a structure representing a perl-level coroutine */	241	/* this is a structure representing a perl-level coroutine */
267	struct coro {	242	struct coro {
268	/* the C coroutine allocated to this perl coroutine, if any */	243	/* the C coroutine allocated to this perl coroutine, if any */
269	coro_cctx *cctx;	244	coro_cctx *cctx;
270		245
271	/* process data */	246	/* state data */
272	struct slf_frame slf_frame; /* saved slf frame */	247	struct CoroSLF slf_frame; /* saved slf frame */
273	void *slf_data;
274	AV *mainstack;	248	AV *mainstack;
275	perl_slots *slot; /* basically the saved sp */	249	perl_slots *slot; /* basically the saved sp */
276		250
277	AV *args; /* data associated with this coroutine (initial args) */	251	AV *args; /* data associated with this coroutine (initial args) */
278	int refcnt; /* coroutines are refcounted, yes */	252	int refcnt; /* coroutines are refcounted, yes */
279	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
280	HV *hv; /* the perl hash associated with this coro, if any */	254	HV *hv; /* the perl hash associated with this coro, if any */
		255	void (*on_destroy)(pTHX_ struct coro *coro);
281		256
282	/* statistics */	257	/* statistics */
283	int usecount; /* number of transfers to this coro */	258	int usecount; /* number of transfers to this coro */
284		259
285	/* coro process data */	260	/* coro process data */
286	int prio;	261	int prio;
287	SV *throw; /* exception to be thrown */	262	SV *except; /* exception to be thrown */
		263	SV *rouse_cb;
288		264
289	/* async_pool */	265	/* async_pool */
290	SV *saved_deffh;	266	SV *saved_deffh;
291		267
292	/* linked list */	268	/* linked list */
…		…
294	};	270	};
295		271
296	typedef struct coro *Coro__State;	272	typedef struct coro *Coro__State;
297	typedef struct coro *Coro__State_or_hashref;	273	typedef struct coro *Coro__State_or_hashref;
298		274
		275	/* the following variables are effectively part of the perl context */
		276	/* and get copied between struct coro and these variables */
		277	/* the mainr easonw e don't support windows process emulation */
299	static struct slf_frame slf_frame; /* the current slf frame */	278	static struct CoroSLF slf_frame; /* the current slf frame */
300		279
301	/** Coro ********************************************************************/	280	/** Coro ********************************************************************/
302		281
303	#define PRIO_MAX 3	282	#define PRIO_MAX 3
304	#define PRIO_HIGH 1	283	#define PRIO_HIGH 1
…		…
405	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	384	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406		385
407	return 0;	386	return 0;
408	}	387	}
409		388
410	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	389	#define CORO_MAGIC_type_cv 26
411	#define CORO_MAGIC_type_state PERL_MAGIC_ext	390	#define CORO_MAGIC_type_state PERL_MAGIC_ext
412		391
413	static MGVTBL coro_cv_vtbl = {	392	static MGVTBL coro_cv_vtbl = {
414	0, 0, 0, 0,	393	0, 0, 0, 0,
415	coro_cv_free	394	coro_cv_free
416	};	395	};
417		396
		397	#define CORO_MAGIC_NN(sv, type) \
		398	(expect_true (SvMAGIC (sv)->mg_type == type) \
		399	? SvMAGIC (sv) \
		400	: mg_find (sv, type))
		401
418	#define CORO_MAGIC(sv, type) \	402	#define CORO_MAGIC(sv, type) \
419	SvMAGIC (sv) \	403	(expect_true (SvMAGIC (sv)) \
420	? SvMAGIC (sv)->mg_type == type \	404	? CORO_MAGIC_NN (sv, type) \
421	? SvMAGIC (sv) \
422	: mg_find (sv, type) \
423	: 0	405	: 0)
424		406
425	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	407	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	408	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
427		409
428	INLINE struct coro *	410	INLINE struct coro *
429	SvSTATE_ (pTHX_ SV *coro)	411	SvSTATE_ (pTHX_ SV *coro)
430	{	412	{
431	HV *stash;	413	HV *stash;
…		…
448	mg = CORO_MAGIC_state (coro);	430	mg = CORO_MAGIC_state (coro);
449	return (struct coro *)mg->mg_ptr;	431	return (struct coro *)mg->mg_ptr;
450	}	432	}
451		433
452	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	434	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		435
		436	/* faster than SvSTATE, but expects a coroutine hv */
		437	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		438	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
453		439
454	/* the next two functions merely cache the padlists */	440	/* the next two functions merely cache the padlists */
455	static void	441	static void
456	get_padlist (pTHX_ CV *cv)	442	get_padlist (pTHX_ CV *cv)
457	{	443	{
…		…
525	}	511	}
526		512
527	PUTBACK;	513	PUTBACK;
528	}	514	}
529		515
530	slf_frame = c->slf_frame;	516	slf_frame = c->slf_frame;
531	coroapi.slf_data = c->slf_data;	517	CORO_THROW = c->except;
532	}	518	}
533		519
534	static void	520	static void
535	save_perl (pTHX_ Coro__State c)	521	save_perl (pTHX_ Coro__State c)
536	{	522	{
537	c->slf_data = coroapi.slf_data;	523	c->except = CORO_THROW;
538	c->slf_frame = slf_frame;	524	c->slf_frame = slf_frame;
539		525
540	{	526	{
541	dSP;	527	dSP;
542	I32 cxix = cxstack_ix;	528	I32 cxix = cxstack_ix;
…		…
823		809
824	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	810	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825	}	811	}
826		812
827	static void	813	static void
828	prepare_nop (aTHX_ struct coro_transfer_args *ta)	814	prepare_nop (pTHX_ struct coro_transfer_args *ta)
829	{	815	{
830	/* kind of mega-hacky, but works */	816	/* kind of mega-hacky, but works */
831	ta->next = ta->prev = (struct coro *)ta;	817	ta->next = ta->prev = (struct coro *)ta;
832	}	818	}
833		819
834	static int	820	static int
835	slf_check_nop (aTHX)	821	slf_check_nop (pTHX_ struct CoroSLF *frame)
836	{	822	{
837	return 0;	823	return 0;
838	}	824	}
839		825
840	static void	826	static UNOP coro_setup_op;
		827
		828	static void NOINLINE /* noinline to keep it out of the transfer fast path */
841	coro_setup (pTHX_ struct coro *coro)	829	coro_setup (pTHX_ struct coro *coro)
842	{	830	{
843	/*	831	/*
844	* emulate part of the perl startup here.	832	* emulate part of the perl startup here.
845	*/	833	*/
…		…
872	{	860	{
873	dSP;	861	dSP;
874	UNOP myop;	862	UNOP myop;
875		863
876	Zero (&myop, 1, UNOP);	864	Zero (&myop, 1, UNOP);
877	myop.op_next = Nullop;	865	myop.op_next = Nullop;
878	myop.op_flags = OPf_WANT_VOID;	866	myop.op_flags = OPf_WANT_VOID;
879		867
880	PUSHMARK (SP);	868	PUSHMARK (SP);
881	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	869	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
882	PUTBACK;	870	PUTBACK;
…		…
888	/* this newly created coroutine might be run on an existing cctx which most	876	/* this newly created coroutine might be run on an existing cctx which most
889	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	877	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
890	*/	878	*/
891	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	879	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
892	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	880	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		881
		882	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		883	coro_setup_op.op_next = PL_op;
		884	coro_setup_op.op_type = OP_CUSTOM;
		885	coro_setup_op.op_ppaddr = pp_slf;
		886	/* no flags required, as an init function won't be called */
		887
		888	PL_op = (OP *)&coro_setup_op;
		889
		890	/* copy throw, in case it was set before coro_setup */
		891	CORO_THROW = coro->except;
893	}	892	}
894		893
895	static void	894	static void
896	coro_destruct (pTHX_ struct coro *coro)	895	coro_destruct (pTHX_ struct coro *coro)
897	{	896	{
…		…
920	SvREFCNT_dec (GvSV (irsgv));	919	SvREFCNT_dec (GvSV (irsgv));
921		920
922	SvREFCNT_dec (PL_diehook);	921	SvREFCNT_dec (PL_diehook);
923	SvREFCNT_dec (PL_warnhook);	922	SvREFCNT_dec (PL_warnhook);
924		923
		924	SvREFCNT_dec (CORO_THROW);
925	SvREFCNT_dec (coro->saved_deffh);	925	SvREFCNT_dec (coro->saved_deffh);
926	SvREFCNT_dec (coro->throw);	926	SvREFCNT_dec (coro->rouse_cb);
927		927
928	coro_destruct_stacks (aTHX);	928	coro_destruct_stacks (aTHX);
929	}	929	}
930		930
931	INLINE void	931	INLINE void
…		…
941	static int	941	static int
942	runops_trace (pTHX)	942	runops_trace (pTHX)
943	{	943	{
944	COP *oldcop = 0;	944	COP *oldcop = 0;
945	int oldcxix = -2;	945	int oldcxix = -2;
946	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */	946	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947	coro_cctx *cctx = coro->cctx;	947	coro_cctx *cctx = coro->cctx;
948		948
949	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	949	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950	{	950	{
951	PERL_ASYNC_CHECK ();	951	PERL_ASYNC_CHECK ();
…		…
1060		1060
1061	TAINT_NOT;	1061	TAINT_NOT;
1062	return 0;	1062	return 0;
1063	}	1063	}
1064		1064
		1065	static struct coro_cctx *cctx_ssl_cctx;
		1066	static struct CoroSLF cctx_ssl_frame;
		1067
1065	static void	1068	static void
1066	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)	1069	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067	{	1070	{
1068	ta->prev = (struct coro *)cctx;	1071	ta->prev = (struct coro *)cctx_ssl_cctx;
1069	ta->next = 0;	1072	ta->next = 0;
1070	}	1073	}
1071		1074
1072	/* inject a fake call to Coro::State::_cctx_init into the execution */	1075	static int
1073	/* _cctx_init should be careful, as it could be called at almost any time */	1076	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074	/* during execution of a perl program */	1077	{
1075	/* also initialises PL_top_env */	1078	*frame = cctx_ssl_frame;
		1079
		1080	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1081	}
		1082
		1083	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076	static void NOINLINE	1084	static void NOINLINE
1077	cctx_prepare (pTHX_ coro_cctx *cctx)	1085	cctx_prepare (pTHX_ coro_cctx *cctx)
1078	{	1086	{
1079	dSP;
1080	UNOP myop;
1081
1082	PL_top_env = &PL_start_env;	1087	PL_top_env = &PL_start_env;
1083		1088
1084	if (cctx->flags & CC_TRACE)	1089	if (cctx->flags & CC_TRACE)
1085	PL_runops = runops_trace;	1090	PL_runops = runops_trace;
1086		1091
1087	Zero (&myop, 1, UNOP);	1092	/* we already must be executing an SLF op, there is no other valid way
1088	myop.op_next = PL_op;	1093	* that can lead to creation of a new cctx */
1089	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1094	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1095	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090		1096
1091	PUSHMARK (SP);	1097	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092	EXTEND (SP, 2);	1098	cctx_ssl_cctx = cctx;
1093	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1099	cctx_ssl_frame = slf_frame;
1094	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1100
1095	PUTBACK;	1101	slf_frame.prepare = slf_prepare_set_stacklevel;
1096	PL_op = (OP *)&myop;	1102	slf_frame.check = slf_check_set_stacklevel;
1097	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098	SPAGAIN;
1099	}	1103	}
1100		1104
1101	/* the tail of transfer: execute stuff we can only do after a transfer */	1105	/* the tail of transfer: execute stuff we can only do after a transfer */
1102	INLINE void	1106	INLINE void
1103	transfer_tail (pTHX)	1107	transfer_tail (pTHX)
1104	{	1108	{
1105	struct coro *next = (struct coro *)transfer_next;
1106	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109	free_coro_mortal (aTHX);	1109	free_coro_mortal (aTHX);
1110	UNLOCK;
1111
1112	if (expect_false (next->throw))
1113	{
1114	SV *exception = sv_2mortal (next->throw);
1115
1116	next->throw = 0;
1117	sv_setsv (ERRSV, exception);
1118	croak (0);
1119	}
1120	}	1110	}
1121		1111
1122	/*	1112	/*
1123	* this is a _very_ stripped down perl interpreter ;)	1113	* this is a _very_ stripped down perl interpreter ;)
1124	*/	1114	*/
…		…
1139		1129
1140	/* inject a fake subroutine call to cctx_init */	1130	/* inject a fake subroutine call to cctx_init */
1141	cctx_prepare (aTHX_ (coro_cctx *)arg);	1131	cctx_prepare (aTHX_ (coro_cctx *)arg);
1142		1132
1143	/* cctx_run is the alternative tail of transfer() */	1133	/* cctx_run is the alternative tail of transfer() */
1144	/* TODO: throwing an exception here might be deadly, VERIFY */
1145	transfer_tail (aTHX);	1134	transfer_tail (aTHX);
1146		1135
1147	/* somebody or something will hit me for both perl_run and PL_restartop */	1136	/* somebody or something will hit me for both perl_run and PL_restartop */
1148	PL_restartop = PL_op;	1137	PL_restartop = PL_op;
1149	perl_run (PL_curinterp);	1138	perl_run (PL_curinterp);
…		…
1305	/** coroutine switching *****************************************************/	1294	/** coroutine switching *****************************************************/
1306		1295
1307	static void	1296	static void
1308	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1297	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309	{	1298	{
		1299	/* TODO: throwing up here is considered harmful */
		1300
1310	if (expect_true (prev != next))	1301	if (expect_true (prev != next))
1311	{	1302	{
1312	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1303	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1304	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314		1305
1315	if (expect_false (next->flags & CF_RUNNING))	1306	if (expect_false (next->flags & CF_RUNNING))
1316	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1307	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317		1308
1318	if (expect_false (next->flags & CF_DESTROYED))	1309	if (expect_false (next->flags & CF_DESTROYED))
1319	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1310	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320		1311
1321	#if !PERL_VERSION_ATLEAST (5,10,0)	1312	#if !PERL_VERSION_ATLEAST (5,10,0)
1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1313	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1314	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324	#endif	1315	#endif
1325	}	1316	}
1326	}	1317	}
1327		1318
1328	/* always use the TRANSFER macro */	1319	/* always use the TRANSFER macro */
1329	static void NOINLINE	1320	static void NOINLINE /* noinline so we have a fixed stackframe */
1330	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1321	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331	{	1322	{
1332	dSTACKLEVEL;	1323	dSTACKLEVEL;
1333		1324
1334	/* sometimes transfer is only called to set idle_sp */	1325	/* sometimes transfer is only called to set idle_sp */
1335	if (expect_false (!next))	1326	if (expect_false (!next))
1336	{	1327	{
1337	((coro_cctx *)prev)->idle_sp = stacklevel;	1328	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1329	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339	}	1330	}
1340	else if (expect_true (prev != next))	1331	else if (expect_true (prev != next))
1341	{	1332	{
1342	coro_cctx *prev__cctx;	1333	coro_cctx *prev__cctx;
…		…
1349	prev->flags |= CF_RUNNING;	1340	prev->flags |= CF_RUNNING;
1350	}	1341	}
1351		1342
1352	prev->flags &= ~CF_RUNNING;	1343	prev->flags &= ~CF_RUNNING;
1353	next->flags |= CF_RUNNING;	1344	next->flags |= CF_RUNNING;
1354
1355	LOCK;
1356		1345
1357	/* first get rid of the old state */	1346	/* first get rid of the old state */
1358	save_perl (aTHX_ prev);	1347	save_perl (aTHX_ prev);
1359		1348
1360	if (expect_false (next->flags & CF_NEW))	1349	if (expect_false (next->flags & CF_NEW))
…		…
1369		1358
1370	prev__cctx = prev->cctx;	1359	prev__cctx = prev->cctx;
1371		1360
1372	/* possibly untie and reuse the cctx */	1361	/* possibly untie and reuse the cctx */
1373	if (expect_true (	1362	if (expect_true (
1374	prev__cctx->idle_sp == stacklevel	1363	prev__cctx->idle_sp == STACKLEVEL
1375	&& !(prev__cctx->flags & CC_TRACE)	1364	&& !(prev__cctx->flags & CC_TRACE)
1376	&& !force_cctx	1365	&& !force_cctx
1377	))	1366	))
1378	{	1367	{
1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1368	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1393	++next->usecount;	1382	++next->usecount;
1394		1383
1395	if (expect_true (!next->cctx))	1384	if (expect_true (!next->cctx))
1396	next->cctx = cctx_get (aTHX);	1385	next->cctx = cctx_get (aTHX);
1397		1386
1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399	transfer_next = next;
1400
1401	if (expect_false (prev__cctx != next->cctx))	1387	if (expect_false (prev__cctx != next->cctx))
1402	{	1388	{
1403	prev__cctx->top_env = PL_top_env;	1389	prev__cctx->top_env = PL_top_env;
1404	PL_top_env = next->cctx->top_env;	1390	PL_top_env = next->cctx->top_env;
1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1391	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1418	coro_state_destroy (pTHX_ struct coro *coro)	1404	coro_state_destroy (pTHX_ struct coro *coro)
1419	{	1405	{
1420	if (coro->flags & CF_DESTROYED)	1406	if (coro->flags & CF_DESTROYED)
1421	return 0;	1407	return 0;
1422		1408
		1409	if (coro->on_destroy)
		1410	coro->on_destroy (aTHX_ coro);
		1411
1423	coro->flags |= CF_DESTROYED;	1412	coro->flags |= CF_DESTROYED;
1424		1413
1425	if (coro->flags & CF_READY)	1414	if (coro->flags & CF_READY)
1426	{	1415	{
1427	/* reduce nready, as destroying a ready coro effectively unreadies it */	1416	/* reduce nready, as destroying a ready coro effectively unreadies it */
1428	/* alternative: look through all ready queues and remove the coro */	1417	/* alternative: look through all ready queues and remove the coro */
1429	LOCK;
1430	--coro_nready;	1418	--coro_nready;
1431	UNLOCK;
1432	}	1419	}
1433	else	1420	else
1434	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1421	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435		1422
1436	if (coro->mainstack && coro->mainstack != main_mainstack)	1423	if (coro->mainstack && coro->mainstack != main_mainstack)
1437	{	1424	{
1438	struct coro temp;	1425	struct coro temp;
1439		1426
1440	if (coro->flags & CF_RUNNING)	1427	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441	croak ("FATAL: tried to destroy currently running coroutine");
1442		1428
1443	save_perl (aTHX_ &temp);	1429	save_perl (aTHX_ &temp);
1444	load_perl (aTHX_ coro);	1430	load_perl (aTHX_ coro);
1445		1431
1446	coro_destruct (aTHX_ coro);	1432	coro_destruct (aTHX_ coro);
…		…
1513		1499
1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1500	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515	TRANSFER (ta, 1);	1501	TRANSFER (ta, 1);
1516	}	1502	}
1517		1503
		1504	/*****************************************************************************/
		1505	/* gensub: simple closure generation utility */
		1506
		1507	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1508
		1509	/* create a closure from XS, returns a code reference */
		1510	/* the arg can be accessed via GENSUB_ARG from the callback */
		1511	/* the callback must use dXSARGS/XSRETURN */
		1512	static SV *
		1513	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1514	{
		1515	CV *cv = (CV *)newSV (0);
		1516
		1517	sv_upgrade ((SV *)cv, SVt_PVCV);
		1518
		1519	CvANON_on (cv);
		1520	CvISXSUB_on (cv);
		1521	CvXSUB (cv) = xsub;
		1522	GENSUB_ARG = arg;
		1523
		1524	return newRV_noinc ((SV *)cv);
		1525	}
		1526
1518	/** Coro ********************************************************************/	1527	/** Coro ********************************************************************/
1519		1528
1520	static void	1529	INLINE void
1521	coro_enq (pTHX_ SV *coro_sv)	1530	coro_enq (pTHX_ struct coro *coro)
1522	{	1531	{
1523	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1532	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524	}	1533	}
1525		1534
1526	static SV *	1535	INLINE SV *
1527	coro_deq (pTHX)	1536	coro_deq (pTHX)
1528	{	1537	{
1529	int prio;	1538	int prio;
1530		1539
1531	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1540	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1550	if (coro->flags & CF_READY)	1559	if (coro->flags & CF_READY)
1551	return 0;	1560	return 0;
1552		1561
1553	coro->flags |= CF_READY;	1562	coro->flags |= CF_READY;
1554		1563
1555	LOCK;
1556
1557	sv_hook = coro_nready ? 0 : coro_readyhook;	1564	sv_hook = coro_nready ? 0 : coro_readyhook;
1558	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1565	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559		1566
1560	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1567	coro_enq (aTHX_ coro);
1561	++coro_nready;	1568	++coro_nready;
1562		1569
1563	UNLOCK;
1564
1565	if (sv_hook)	1570	if (sv_hook)
1566	{	1571	{
1567	dSP;	1572	dSP;
1568		1573
1569	ENTER;	1574	ENTER;
1570	SAVETMPS;	1575	SAVETMPS;
1571		1576
1572	PUSHMARK (SP);	1577	PUSHMARK (SP);
1573	PUTBACK;	1578	PUTBACK;
1574	call_sv (sv_hook, G_DISCARD);	1579	call_sv (sv_hook, G_VOID | G_DISCARD);
1575	SPAGAIN;
1576		1580
1577	FREETMPS;	1581	FREETMPS;
1578	LEAVE;	1582	LEAVE;
1579	}	1583	}
1580		1584
…		…
1595	{	1599	{
1596	SV *prev_sv, *next_sv;	1600	SV *prev_sv, *next_sv;
1597		1601
1598	for (;;)	1602	for (;;)
1599	{	1603	{
1600	LOCK;
1601	next_sv = coro_deq (aTHX);	1604	next_sv = coro_deq (aTHX);
1602		1605
1603	/* nothing to schedule: call the idle handler */	1606	/* nothing to schedule: call the idle handler */
1604	if (expect_false (!next_sv))	1607	if (expect_false (!next_sv))
1605	{	1608	{
1606	dSP;	1609	dSP;
1607	UNLOCK;
1608		1610
1609	ENTER;	1611	ENTER;
1610	SAVETMPS;	1612	SAVETMPS;
1611		1613
1612	PUSHMARK (SP);	1614	PUSHMARK (SP);
1613	PUTBACK;	1615	PUTBACK;
1614	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1616	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1615	SPAGAIN;
1616		1617
1617	FREETMPS;	1618	FREETMPS;
1618	LEAVE;	1619	LEAVE;
1619	continue;	1620	continue;
1620	}	1621	}
1621		1622
1622	ta->next = SvSTATE (next_sv);	1623	ta->next = SvSTATE_hv (next_sv);
1623		1624
1624	/* cannot transfer to destroyed coros, skip and look for next */	1625	/* cannot transfer to destroyed coros, skip and look for next */
1625	if (expect_false (ta->next->flags & CF_DESTROYED))	1626	if (expect_false (ta->next->flags & CF_DESTROYED))
1626	{	1627	{
1627	UNLOCK;
1628	SvREFCNT_dec (next_sv);	1628	SvREFCNT_dec (next_sv);
1629	/* coro_nready has already been taken care of by destroy */	1629	/* coro_nready has already been taken care of by destroy */
1630	continue;	1630	continue;
1631	}	1631	}
1632		1632
1633	--coro_nready;	1633	--coro_nready;
1634	UNLOCK;
1635	break;	1634	break;
1636	}	1635	}
1637		1636
1638	/* free this only after the transfer */	1637	/* free this only after the transfer */
1639	prev_sv = SvRV (coro_current);	1638	prev_sv = SvRV (coro_current);
1640	ta->prev = SvSTATE (prev_sv);	1639	ta->prev = SvSTATE_hv (prev_sv);
1641	TRANSFER_CHECK (*ta);	1640	TRANSFER_CHECK (*ta);
1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1641	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643	ta->next->flags &= ~CF_READY;	1642	ta->next->flags &= ~CF_READY;
1644	SvRV_set (coro_current, next_sv);	1643	SvRV_set (coro_current, next_sv);
1645		1644
1646	LOCK;
1647	free_coro_mortal (aTHX);	1645	free_coro_mortal (aTHX);
1648	coro_mortal = prev_sv;	1646	coro_mortal = prev_sv;
1649	UNLOCK;
1650	}	1647	}
1651		1648
1652	INLINE void	1649	INLINE void
1653	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1650	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654	{	1651	{
…		…
1718	if (flags & CC_TRACE)	1715	if (flags & CC_TRACE)
1719	{	1716	{
1720	if (!coro->cctx)	1717	if (!coro->cctx)
1721	coro->cctx = cctx_new_run ();	1718	coro->cctx = cctx_new_run ();
1722	else if (!(coro->cctx->flags & CC_TRACE))	1719	else if (!(coro->cctx->flags & CC_TRACE))
1723	croak ("cannot enable tracing on coroutine with custom stack");	1720	croak ("cannot enable tracing on coroutine with custom stack,");
1724		1721
1725	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1722	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726	}	1723	}
1727	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1724	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728	{	1725	{
…		…
1733	else	1730	else
1734	coro->slot->runops = RUNOPS_DEFAULT;	1731	coro->slot->runops = RUNOPS_DEFAULT;
1735	}	1732	}
1736	}	1733	}
1737		1734
1738	#if 0	1735	/*****************************************************************************/
		1736	/* rouse callback */
		1737
		1738	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1739
		1740	static void
		1741	coro_rouse_callback (pTHX_ CV *cv)
		1742	{
		1743	dXSARGS;
		1744	SV *data = (SV *)GENSUB_ARG;
		1745
		1746	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1747	{
		1748	/* first call, set args */
		1749	int i;
		1750	AV *av = newAV ();
		1751	SV *coro = SvRV (data);
		1752
		1753	SvRV_set (data, (SV *)av);
		1754	api_ready (aTHX_ coro);
		1755	SvREFCNT_dec (coro);
		1756
		1757	/* better take a full copy of the arguments */
		1758	while (items--)
		1759	av_store (av, items, newSVsv (ST (items)));
		1760	}
		1761
		1762	XSRETURN_EMPTY;
		1763	}
		1764
1739	static int	1765	static int
1740	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1766	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1741	{	1767	{
1742	AV *padlist;	1768	SV *data = (SV *)frame->data;
1743	AV *av = (AV *)mg->mg_obj;	1769
		1770	if (CORO_THROW)
		1771	return 0;
1744		1772
1745	abort ();	1773	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1774	return 1;
		1775
		1776	/* now push all results on the stack */
		1777	{
		1778	dSP;
		1779	AV *av = (AV *)SvRV (data);
		1780	int i;
		1781
		1782	EXTEND (SP, AvFILLp (av) + 1);
		1783	for (i = 0; i <= AvFILLp (av); ++i)
		1784	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1785
		1786	/* we have stolen the elements, so ste length to zero and free */
		1787	AvFILLp (av) = -1;
		1788	av_undef (av);
		1789
		1790	PUTBACK;
		1791	}
1746		1792
1747	return 0;	1793	return 0;
1748	}	1794	}
1749		1795
1750	static MGVTBL coro_gensub_vtbl = {	1796	static void
1751	0, 0, 0, 0,	1797	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752	coro_gensub_free	1798	{
1753	};	1799	SV *cb;
1754	#endif	1800
		1801	if (items)
		1802	cb = arg [0];
		1803	else
		1804	{
		1805	struct coro *coro = SvSTATE_current;
		1806
		1807	if (!coro->rouse_cb)
		1808	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1809
		1810	cb = sv_2mortal (coro->rouse_cb);
		1811	coro->rouse_cb = 0;
		1812	}
		1813
		1814	if (!SvROK (cb)
		1815	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1816	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1817	croak ("Coro::rouse_wait called with illegal callback argument,");
		1818
		1819	{
		1820	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1821	SV *data = (SV *)GENSUB_ARG;
		1822
		1823	frame->data = (void *)data;
		1824	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		1825	frame->check = slf_check_rouse_wait;
		1826	}
		1827	}
		1828
		1829	static SV *
		1830	coro_new_rouse_cb (pTHX)
		1831	{
		1832	HV *hv = (HV *)SvRV (coro_current);
		1833	struct coro *coro = SvSTATE_hv (hv);
		1834	SV *data = newRV_inc ((SV *)hv);
		1835	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		1836
		1837	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		1838	SvREFCNT_dec (data); /* magicext increases the refcount */
		1839
		1840	SvREFCNT_dec (coro->rouse_cb);
		1841	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		1842
		1843	return cb;
		1844	}
		1845
		1846	/*****************************************************************************/
		1847	/* schedule-like-function opcode (SLF) */
		1848
		1849	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1850	static const CV *slf_cv;
		1851	static SV **slf_argv;
		1852	static int slf_argc, slf_arga; /* count, allocated */
		1853	static I32 slf_ax; /* top of stack, for restore */
		1854
		1855	/* this restores the stack in the case we patched the entersub, to */
		1856	/* recreate the stack frame as perl will on following calls */
		1857	/* since entersub cleared the stack */
		1858	static OP *
		1859	pp_restore (pTHX)
		1860	{
		1861	int i;
		1862	SV **SP = PL_stack_base + slf_ax;
		1863
		1864	PUSHMARK (SP);
		1865
		1866	EXTEND (SP, slf_argc + 1);
		1867
		1868	for (i = 0; i < slf_argc; ++i)
		1869	PUSHs (sv_2mortal (slf_argv [i]));
		1870
		1871	PUSHs ((SV *)CvGV (slf_cv));
		1872
		1873	RETURNOP (slf_restore.op_first);
		1874	}
		1875
		1876	static void
		1877	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1878	{
		1879	SV **arg = (SV **)slf_frame.data;
		1880
		1881	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1882	}
		1883
		1884	static void
		1885	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1886	{
		1887	if (items != 2)
		1888	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1889
		1890	frame->prepare = slf_prepare_transfer;
		1891	frame->check = slf_check_nop;
		1892	frame->data = (void *)arg; /* let's hope it will stay valid */
		1893	}
		1894
		1895	static void
		1896	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1897	{
		1898	frame->prepare = prepare_schedule;
		1899	frame->check = slf_check_nop;
		1900	}
		1901
		1902	static void
		1903	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1904	{
		1905	frame->prepare = prepare_cede;
		1906	frame->check = slf_check_nop;
		1907	}
		1908
		1909	static void
		1910	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1911	{
		1912	frame->prepare = prepare_cede_notself;
		1913	frame->check = slf_check_nop;
		1914	}
		1915
		1916	/*
		1917	* these not obviously related functions are all rolled into one
		1918	* function to increase chances that they all will call transfer with the same
		1919	* stack offset
		1920	* SLF stands for "schedule-like-function".
		1921	*/
		1922	static OP *
		1923	pp_slf (pTHX)
		1924	{
		1925	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1926
		1927	/* set up the slf frame, unless it has already been set-up */
		1928	/* the latter happens when a new coro has been started */
		1929	/* or when a new cctx was attached to an existing coroutine */
		1930	if (expect_true (!slf_frame.prepare))
		1931	{
		1932	/* first iteration */
		1933	dSP;
		1934	SV **arg = PL_stack_base + TOPMARK + 1;
		1935	int items = SP - arg; /* args without function object */
		1936	SV *gv = *sp;
		1937
		1938	/* do a quick consistency check on the "function" object, and if it isn't */
		1939	/* for us, divert to the real entersub */
		1940	if (SvTYPE (gv) != SVt_PVGV
		1941	|| !GvCV (gv)
		1942	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1943	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1944
		1945	if (!(PL_op->op_flags & OPf_STACKED))
		1946	{
		1947	/* ampersand-form of call, use @_ instead of stack */
		1948	AV *av = GvAV (PL_defgv);
		1949	arg = AvARRAY (av);
		1950	items = AvFILLp (av) + 1;
		1951	}
		1952
		1953	/* now call the init function, which needs to set up slf_frame */
		1954	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1955	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1956
		1957	/* pop args */
		1958	SP = PL_stack_base + POPMARK;
		1959
		1960	PUTBACK;
		1961	}
		1962
		1963	/* now that we have a slf_frame, interpret it! */
		1964	/* we use a callback system not to make the code needlessly */
		1965	/* complicated, but so we can run multiple perl coros from one cctx */
		1966
		1967	do
		1968	{
		1969	struct coro_transfer_args ta;
		1970
		1971	slf_frame.prepare (aTHX_ &ta);
		1972	TRANSFER (ta, 0);
		1973
		1974	checkmark = PL_stack_sp - PL_stack_base;
		1975	}
		1976	while (slf_frame.check (aTHX_ &slf_frame));
		1977
		1978	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		1979
		1980	/* exception handling */
		1981	if (expect_false (CORO_THROW))
		1982	{
		1983	SV *exception = sv_2mortal (CORO_THROW);
		1984
		1985	CORO_THROW = 0;
		1986	sv_setsv (ERRSV, exception);
		1987	croak (0);
		1988	}
		1989
		1990	/* return value handling - mostly like entersub */
		1991	/* make sure we put something on the stack in scalar context */
		1992	if (GIMME_V == G_SCALAR)
		1993	{
		1994	dSP;
		1995	SV **bot = PL_stack_base + checkmark;
		1996
		1997	if (sp == bot) /* too few, push undef */
		1998	bot [1] = &PL_sv_undef;
		1999	else if (sp != bot + 1) /* too many, take last one */
		2000	bot [1] = *sp;
		2001
		2002	SP = bot + 1;
		2003
		2004	PUTBACK;
		2005	}
		2006
		2007	return NORMAL;
		2008	}
		2009
		2010	static void
		2011	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		2012	{
		2013	int i;
		2014	SV **arg = PL_stack_base + ax;
		2015	int items = PL_stack_sp - arg + 1;
		2016
		2017	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		2018
		2019	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		2020	&& PL_op->op_ppaddr != pp_slf)
		2021	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		2022
		2023	CvFLAGS (cv) |= CVf_SLF;
		2024	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		2025	slf_cv = cv;
		2026
		2027	/* we patch the op, and then re-run the whole call */
		2028	/* we have to put the same argument on the stack for this to work */
		2029	/* and this will be done by pp_restore */
		2030	slf_restore.op_next = (OP *)&slf_restore;
		2031	slf_restore.op_type = OP_CUSTOM;
		2032	slf_restore.op_ppaddr = pp_restore;
		2033	slf_restore.op_first = PL_op;
		2034
		2035	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		2036
		2037	if (PL_op->op_flags & OPf_STACKED)
		2038	{
		2039	if (items > slf_arga)
		2040	{
		2041	slf_arga = items;
		2042	free (slf_argv);
		2043	slf_argv = malloc (slf_arga * sizeof (SV *));
		2044	}
		2045
		2046	slf_argc = items;
		2047
		2048	for (i = 0; i < items; ++i)
		2049	slf_argv [i] = SvREFCNT_inc (arg [i]);
		2050	}
		2051	else
		2052	slf_argc = 0;
		2053
		2054	PL_op->op_ppaddr = pp_slf;
		2055	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		2056
		2057	PL_op = (OP *)&slf_restore;
		2058	}
1755		2059
1756	/*****************************************************************************/	2060	/*****************************************************************************/
1757	/* PerlIO::cede */	2061	/* PerlIO::cede */
1758		2062
1759	typedef struct	2063	typedef struct
…		…
1827	PerlIOBuf_get_cnt,	2131	PerlIOBuf_get_cnt,
1828	PerlIOBuf_set_ptrcnt,	2132	PerlIOBuf_set_ptrcnt,
1829	};	2133	};
1830		2134
1831	/*****************************************************************************/	2135	/*****************************************************************************/
		2136	/* Coro::Semaphore & Coro::Signal */
1832		2137
1833	static const CV *slf_cv; /* for quick consistency check */
1834
1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836	static SV *slf_arg0;
1837	static SV *slf_arg1;
1838
1839	/* this restores the stack in the case we patched the entersub, to */
1840	/* recreate the stack frame as perl will on following calls */
1841	/* since entersub cleared the stack */
1842	static OP *	2138	static SV *
1843	pp_restore (pTHX)	2139	coro_waitarray_new (pTHX_ int count)
1844	{	2140	{
1845	dSP;	2141	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2142	AV *av = newAV ();
		2143	SV **ary;
1846		2144
1847	PUSHMARK (SP);	2145	/* unfortunately, building manually saves memory */
		2146	Newx (ary, 2, SV *);
		2147	AvALLOC (av) = ary;
		2148	AvARRAY (av) = ary;
		2149	AvMAX (av) = 1;
		2150	AvFILLp (av) = 0;
		2151	ary [0] = newSViv (count);
1848		2152
1849	EXTEND (SP, 3);	2153	return newRV_noinc ((SV *)av);
1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852	PUSHs ((SV *)CvGV (slf_cv));
1853
1854	RETURNOP (slf_restore.op_first);
1855	}	2154	}
1856		2155
1857	static void	2156	/* semaphore */
1858	slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859	{
1860	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861	CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862	}
1863		2157
1864	static void	2158	static void
1865	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	2159	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866	{	2160	{
1867	prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA);	2161	SV *count_sv = AvARRAY (av)[0];
1868	}	2162	IV count = SvIVX (count_sv);
1869		2163
1870	static void	2164	count += adjust;
1871	slf_init_transfer (pTHX_ SV **arg, int items)	2165	SvIVX (count_sv) = count;
1872	{
1873	if (items != 2)
1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875		2166
1876	CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */	2167	/* now wake up as many waiters as are expected to lock */
1877	}	2168	while (count > 0 && AvFILLp (av) > 0)
1878
1879	static void
1880	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881	{
1882	SV **arg = (SV **)CORO_SLF_DATA;
1883
1884	prepare_transfer (ta, arg [0], arg [1]);
1885	}
1886
1887	static void
1888	slf_init_nop (pTHX_ SV **arg, int items)
1889	{
1890	}
1891
1892	/* slf_prepare_schedule == prepare_schedule */
1893	/* slf_prepare_cede == prepare_cede */
1894	/* slf_prepare_notself == prepare_notself */
1895
1896	/* we hijack an hopefully unused CV flag for our purposes */
1897	#define CVf_SLF 0x4000
1898
1899	/*
1900	* these not obviously related functions are all rolled into one
1901	* function to increase chances that they all will call transfer with the same
1902	* stack offset
1903	* SLF stands for "schedule-like-function".
1904	*/
1905	static OP *
1906	pp_slf (pTHX)
1907	{
1908	I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910	if (expect_true (!slf_frame.prepare))
1911	{
1912	/* first iteration */
1913	dSP;
1914	SV **arg = PL_stack_base + TOPMARK + 1;
1915	int items = SP - arg; /* args without function object */
1916	SV *gv = *sp;
1917	struct CoroSLF *slf;
1918
1919	/* do a quick consistency check on the "function" object, and if it isn't */
1920	/* for us, divert to the real entersub */
1921	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1922	return PL_ppaddr[OP_ENTERSUB](aTHX);
1923
1924	/* pop args */
1925	SP = PL_stack_base + POPMARK;
1926
1927	if (!(PL_op->op_flags & OPf_STACKED))
1928	{
1929	/* ampersand-form of call, use @_ instead of stack */
1930	AV *av = GvAV (PL_defgv);
1931	arg = AvARRAY (av);
1932	items = AvFILLp (av) + 1;
1933	}
1934
1935	PUTBACK;
1936
1937	slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;
1938	slf_frame.prepare = slf->prepare;
1939	slf_frame.check = slf->check;
1940	slf->init (aTHX_ arg, items);
1941	}	2169	{
		2170	SV *cb;
1942		2171
1943	/* now interpret the slf_frame */	2172	/* swap first two elements so we can shift a waiter */
1944	/* we use a callback system not to make the code needlessly */	2173	AvARRAY (av)[0] = AvARRAY (av)[1];
1945	/* complicated, but so we can run multiple perl coros from one cctx */	2174	AvARRAY (av)[1] = count_sv;
		2175	cb = av_shift (av);
1946		2176
1947	do	2177	if (SvOBJECT (cb))
		2178	api_ready (aTHX_ cb);
		2179	else
		2180	croak ("callbacks not yet supported");
		2181
		2182	SvREFCNT_dec (cb);
		2183
		2184	--count;
1948	{	2185	}
1949	struct coro_transfer_args ta;	2186	}
1950		2187
1951	slf_frame.prepare (aTHX_ &ta);	2188	static void
1952	TRANSFER (ta, 0);	2189	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2190	{
		2191	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2192	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2193	}
1953		2194
1954	checkmark = PL_stack_sp - PL_stack_base;	2195	static int
		2196	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
		2197	{
		2198	AV *av = (AV *)frame->data;
		2199	SV *count_sv = AvARRAY (av)[0];
		2200
		2201	/* if we are about to throw, don't actually acquire the lock, just throw */
		2202	if (CORO_THROW)
		2203	return 0;
		2204	else if (SvIVX (count_sv) > 0)
1955	}	2205	{
1956	while (slf_frame.check (aTHX));	2206	SvSTATE_current->on_destroy = 0;
1957		2207
		2208	if (acquire)
		2209	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2210	else
		2211	coro_semaphore_adjust (aTHX_ av, 0);
		2212
		2213	return 0;
		2214	}
		2215	else
		2216	{
		2217	int i;
		2218	/* if we were woken up but can't down, we look through the whole */
		2219	/* waiters list and only add us if we aren't in there already */
		2220	/* this avoids some degenerate memory usage cases */
		2221
		2222	for (i = 1; i <= AvFILLp (av); ++i)
		2223	if (AvARRAY (av)[i] == SvRV (coro_current))
		2224	return 1;
		2225
		2226	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2227	return 1;
		2228	}
		2229	}
		2230
		2231	static int
		2232	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2233	{
		2234	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2235	}
		2236
		2237	static int
		2238	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2239	{
		2240	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2241	}
		2242
		2243	static void
		2244	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2245	{
		2246	AV *av = (AV *)SvRV (arg [0]);
		2247
		2248	if (SvIVX (AvARRAY (av)[0]) > 0)
		2249	{
		2250	frame->data = (void *)av;
		2251	frame->prepare = prepare_nop;
		2252	}
		2253	else
		2254	{
		2255	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2256
		2257	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
		2258	frame->prepare = prepare_schedule;
		2259
		2260	/* to avoid race conditions when a woken-up coro gets terminated */
		2261	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2262	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2263	}
		2264	}
		2265
		2266	static void
		2267	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2268	{
		2269	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2270	frame->check = slf_check_semaphore_down;
		2271	}
		2272
		2273	static void
		2274	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2275	{
		2276	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2277	frame->check = slf_check_semaphore_wait;
		2278	}
		2279
		2280	/* signal */
		2281
		2282	static void
		2283	coro_signal_wake (pTHX_ AV *av, int count)
		2284	{
		2285	SvIVX (AvARRAY (av)[0]) = 0;
		2286
		2287	/* now signal count waiters */
		2288	while (count > 0 && AvFILLp (av) > 0)
		2289	{
		2290	SV *cb;
		2291
		2292	/* swap first two elements so we can shift a waiter */
		2293	cb = AvARRAY (av)[0];
		2294	AvARRAY (av)[0] = AvARRAY (av)[1];
		2295	AvARRAY (av)[1] = cb;
		2296
		2297	cb = av_shift (av);
		2298
		2299	api_ready (aTHX_ cb);
		2300	sv_setiv (cb, 0); /* signal waiter */
		2301	SvREFCNT_dec (cb);
		2302
		2303	--count;
		2304	}
		2305	}
		2306
		2307	static int
		2308	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2309	{
		2310	/* if we are about to throw, also stop waiting */
		2311	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2312	}
		2313
		2314	static void
		2315	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2316	{
		2317	AV *av = (AV *)SvRV (arg [0]);
		2318
		2319	if (SvIVX (AvARRAY (av)[0]))
		2320	{
		2321	SvIVX (AvARRAY (av)[0]) = 0;
		2322	frame->prepare = prepare_nop;
		2323	frame->check = slf_check_nop;
		2324	}
		2325	else
		2326	{
		2327	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2328
		2329	av_push (av, waiter);
		2330
		2331	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2332	frame->prepare = prepare_schedule;
		2333	frame->check = slf_check_signal_wait;
		2334	}
		2335	}
		2336
		2337	/*****************************************************************************/
		2338	/* Coro::AIO */
		2339
		2340	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2341
		2342	/* helper storage struct */
		2343	struct io_state
		2344	{
		2345	int errorno;
		2346	I32 laststype; /* U16 in 5.10.0 */
		2347	int laststatval;
		2348	Stat_t statcache;
		2349	};
		2350
		2351	static void
		2352	coro_aio_callback (pTHX_ CV *cv)
		2353	{
		2354	dXSARGS;
		2355	AV *state = (AV *)GENSUB_ARG;
		2356	SV *coro = av_pop (state);
		2357	SV *data_sv = newSV (sizeof (struct io_state));
		2358
		2359	av_extend (state, items);
		2360
		2361	sv_upgrade (data_sv, SVt_PV);
		2362	SvCUR_set (data_sv, sizeof (struct io_state));
		2363	SvPOK_only (data_sv);
		2364
		2365	{
		2366	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2367
		2368	data->errorno = errno;
		2369	data->laststype = PL_laststype;
		2370	data->laststatval = PL_laststatval;
		2371	data->statcache = PL_statcache;
		2372	}
		2373
		2374	/* now build the result vector out of all the parameters and the data_sv */
		2375	{
		2376	int i;
		2377
		2378	for (i = 0; i < items; ++i)
		2379	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2380	}
		2381
		2382	av_push (state, data_sv);
		2383
		2384	api_ready (aTHX_ coro);
		2385	SvREFCNT_dec (coro);
		2386	SvREFCNT_dec ((AV *)state);
		2387	}
		2388
		2389	static int
		2390	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2391	{
		2392	AV *state = (AV *)frame->data;
		2393
		2394	/* if we are about to throw, return early */
		2395	/* this does not cancel the aio request, but at least */
		2396	/* it quickly returns */
		2397	if (CORO_THROW)
		2398	return 0;
		2399
		2400	/* one element that is an RV? repeat! */
		2401	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2402	return 1;
		2403
		2404	/* restore status */
		2405	{
		2406	SV *data_sv = av_pop (state);
		2407	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2408
		2409	errno = data->errorno;
		2410	PL_laststype = data->laststype;
		2411	PL_laststatval = data->laststatval;
		2412	PL_statcache = data->statcache;
		2413
		2414	SvREFCNT_dec (data_sv);
		2415	}
		2416
		2417	/* push result values */
1958	{	2418	{
1959	dSP;	2419	dSP;
1960	SV **bot = PL_stack_base + checkmark;	2420	int i;
1961	int gimme = GIMME_V;
1962		2421
1963	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */	2422	EXTEND (SP, AvFILLp (state) + 1);
1964		2423	for (i = 0; i <= AvFILLp (state); ++i)
1965	/* make sure we put something on the stack in scalar context */	2424	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966	if (gimme == G_SCALAR)
1967	{
1968	if (sp == bot)
1969	XPUSHs (&PL_sv_undef);
1970
1971	SP = bot + 1;
1972	}
1973		2425
1974	PUTBACK;	2426	PUTBACK;
1975	}	2427	}
1976		2428
1977	return NORMAL;	2429	return 0;
1978	}	2430	}
1979		2431
1980	static void	2432	static void
1981	api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items)	2433	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982	{	2434	{
1983	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));	2435	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));	2436	SV *coro_hv = SvRV (coro_current);
		2437	struct coro *coro = SvSTATE_hv (coro_hv);
1985		2438
1986	if (items > 2)	2439	/* put our coroutine id on the state arg */
1987	croak ("Coro only supports a max of two arguments to SLF functions.");	2440	av_push (state, SvREFCNT_inc_NN (coro_hv));
1988		2441
1989	CvFLAGS (cv) |= CVf_SLF;	2442	/* first see whether we have a non-zero priority and set it as AIO prio */
1990	CvXSUBANY (cv).any_ptr = (void *)slf;	2443	if (coro->prio)
1991	slf_cv = cv;	2444	{
		2445	dSP;
1992		2446
1993	/* we patch the op, and then re-run the whole call */	2447	static SV *prio_cv;
1994	/* we have to put the same argument on the stack for this to work */	2448	static SV *prio_sv;
1995	/* and this will be done by pp_restore */
1996	slf_restore.op_next = (OP *)&slf_restore;
1997	slf_restore.op_type = OP_NULL;
1998	slf_restore.op_ppaddr = pp_restore;
1999	slf_restore.op_first = PL_op;
2000		2449
2001	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;	2450	if (expect_false (!prio_cv))
2002	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;	2451	{
		2452	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2453	prio_sv = newSViv (0);
		2454	}
2003		2455
2004	PL_op->op_ppaddr = pp_slf;	2456	PUSHMARK (SP);
		2457	sv_setiv (prio_sv, coro->prio);
		2458	XPUSHs (prio_sv);
2005		2459
2006	PL_op = (OP *)&slf_restore;	2460	PUTBACK;
		2461	call_sv (prio_cv, G_VOID | G_DISCARD);
		2462	}
		2463
		2464	/* now call the original request */
		2465	{
		2466	dSP;
		2467	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2468	int i;
		2469
		2470	PUSHMARK (SP);
		2471
		2472	/* first push all args to the stack */
		2473	EXTEND (SP, items + 1);
		2474
		2475	for (i = 0; i < items; ++i)
		2476	PUSHs (arg [i]);
		2477
		2478	/* now push the callback closure */
		2479	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2480
		2481	/* now call the AIO function - we assume our request is uncancelable */
		2482	PUTBACK;
		2483	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2484	}
		2485
		2486	/* now that the requets is going, we loop toll we have a result */
		2487	frame->data = (void *)state;
		2488	frame->prepare = prepare_schedule;
		2489	frame->check = slf_check_aio_req;
2007	}	2490	}
		2491
		2492	static void
		2493	coro_aio_req_xs (pTHX_ CV *cv)
		2494	{
		2495	dXSARGS;
		2496
		2497	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2498
		2499	XSRETURN_EMPTY;
		2500	}
		2501
		2502	/*****************************************************************************/
2008		2503
2009	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2504	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010		2505
2011	PROTOTYPES: DISABLE	2506	PROTOTYPES: DISABLE
2012		2507
2013	BOOT:	2508	BOOT:
2014	{	2509	{
2015	#ifdef USE_ITHREADS	2510	#ifdef USE_ITHREADS
2016	MUTEX_INIT (&coro_lock);
2017	# if CORO_PTHREAD	2511	# if CORO_PTHREAD
2018	coro_thx = PERL_GET_CONTEXT;	2512	coro_thx = PERL_GET_CONTEXT;
2019	# endif	2513	# endif
2020	#endif	2514	#endif
2021	BOOT_PAGESIZE;	2515	BOOT_PAGESIZE;
…		…
2042	main_top_env = PL_top_env;	2536	main_top_env = PL_top_env;
2043		2537
2044	while (main_top_env->je_prev)	2538	while (main_top_env->je_prev)
2045	main_top_env = main_top_env->je_prev;	2539	main_top_env = main_top_env->je_prev;
2046		2540
		2541	{
		2542	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2543
		2544	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2545	hv_store_ent (PL_custom_op_names, slf,
		2546	newSVpv ("coro_slf", 0), 0);
		2547
		2548	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2549	hv_store_ent (PL_custom_op_descs, slf,
		2550	newSVpv ("coro schedule like function", 0), 0);
		2551	}
		2552
2047	coroapi.ver = CORO_API_VERSION;	2553	coroapi.ver = CORO_API_VERSION;
2048	coroapi.rev = CORO_API_REVISION;	2554	coroapi.rev = CORO_API_REVISION;
		2555
2049	coroapi.transfer = api_transfer;	2556	coroapi.transfer = api_transfer;
		2557
		2558	coroapi.sv_state = SvSTATE_;
2050	coroapi.execute_slf = api_execute_slf;	2559	coroapi.execute_slf = api_execute_slf;
2051	coroapi.sv_state = SvSTATE_;	2560	coroapi.prepare_nop = prepare_nop;
		2561	coroapi.prepare_schedule = prepare_schedule;
		2562	coroapi.prepare_cede = prepare_cede;
		2563	coroapi.prepare_cede_notself = prepare_cede_notself;
2052		2564
2053	{	2565	{
2054	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2566	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055		2567
2056	if (!svp) croak ("Time::HiRes is required");	2568	if (!svp) croak ("Time::HiRes is required");
…		…
2090	}	2602	}
2091	OUTPUT:	2603	OUTPUT:
2092	RETVAL	2604	RETVAL
2093		2605
2094	void	2606	void
2095	_set_stacklevel (...)	2607	transfer (...)
		2608	PROTOTYPE: $$
2096	CODE:	2609	CODE:
2097	{	2610	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2098	static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100	}
2101
2102	void
2103	transfer (...)
2104	CODE:
2105	{
2106	static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108	}
2109		2611
2110	bool	2612	bool
2111	_destroy (SV *coro_sv)	2613	_destroy (SV *coro_sv)
2112	CODE:	2614	CODE:
2113	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2615	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2120	CODE:	2622	CODE:
2121	_exit (code);	2623	_exit (code);
2122		2624
2123	int	2625	int
2124	cctx_stacksize (int new_stacksize = 0)	2626	cctx_stacksize (int new_stacksize = 0)
		2627	PROTOTYPE: ;$
2125	CODE:	2628	CODE:
2126	RETVAL = cctx_stacksize;	2629	RETVAL = cctx_stacksize;
2127	if (new_stacksize)	2630	if (new_stacksize)
2128	{	2631	{
2129	cctx_stacksize = new_stacksize;	2632	cctx_stacksize = new_stacksize;
…		…
2132	OUTPUT:	2635	OUTPUT:
2133	RETVAL	2636	RETVAL
2134		2637
2135	int	2638	int
2136	cctx_max_idle (int max_idle = 0)	2639	cctx_max_idle (int max_idle = 0)
		2640	PROTOTYPE: ;$
2137	CODE:	2641	CODE:
2138	RETVAL = cctx_max_idle;	2642	RETVAL = cctx_max_idle;
2139	if (max_idle > 1)	2643	if (max_idle > 1)
2140	cctx_max_idle = max_idle;	2644	cctx_max_idle = max_idle;
2141	OUTPUT:	2645	OUTPUT:
2142	RETVAL	2646	RETVAL
2143		2647
2144	int	2648	int
2145	cctx_count ()	2649	cctx_count ()
		2650	PROTOTYPE:
2146	CODE:	2651	CODE:
2147	RETVAL = cctx_count;	2652	RETVAL = cctx_count;
2148	OUTPUT:	2653	OUTPUT:
2149	RETVAL	2654	RETVAL
2150		2655
2151	int	2656	int
2152	cctx_idle ()	2657	cctx_idle ()
		2658	PROTOTYPE:
2153	CODE:	2659	CODE:
2154	RETVAL = cctx_idle;	2660	RETVAL = cctx_idle;
2155	OUTPUT:	2661	OUTPUT:
2156	RETVAL	2662	RETVAL
2157		2663
2158	void	2664	void
2159	list ()	2665	list ()
		2666	PROTOTYPE:
2160	PPCODE:	2667	PPCODE:
2161	{	2668	{
2162	struct coro *coro;	2669	struct coro *coro;
2163	for (coro = coro_first; coro; coro = coro->next)	2670	for (coro = coro_first; coro; coro = coro->next)
2164	if (coro->hv)	2671	if (coro->hv)
…		…
2226		2733
2227	void	2734	void
2228	throw (Coro::State self, SV *throw = &PL_sv_undef)	2735	throw (Coro::State self, SV *throw = &PL_sv_undef)
2229	PROTOTYPE: $;$	2736	PROTOTYPE: $;$
2230	CODE:	2737	CODE:
		2738	{
		2739	struct coro *current = SvSTATE_current;
		2740	SV **throwp = self == current ? &CORO_THROW : &self->except;
2231	SvREFCNT_dec (self->throw);	2741	SvREFCNT_dec (*throwp);
2232	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2742	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2743	}
2233		2744
2234	void	2745	void
2235	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2746	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2747	PROTOTYPE: $;$
2236	C_ARGS: aTHX_ coro, flags	2748	C_ARGS: aTHX_ coro, flags
2237		2749
2238	SV *	2750	SV *
2239	has_cctx (Coro::State coro)	2751	has_cctx (Coro::State coro)
2240	PROTOTYPE: $	2752	PROTOTYPE: $
…		…
2265	OUTPUT:	2777	OUTPUT:
2266	RETVAL	2778	RETVAL
2267		2779
2268	void	2780	void
2269	force_cctx ()	2781	force_cctx ()
		2782	PROTOTYPE:
2270	CODE:	2783	CODE:
2271	struct coro *coro = SvSTATE (coro_current);
2272	coro->cctx->idle_sp = 0;	2784	SvSTATE_current->cctx->idle_sp = 0;
2273		2785
2274	void	2786	void
2275	swap_defsv (Coro::State self)	2787	swap_defsv (Coro::State self)
2276	PROTOTYPE: $	2788	PROTOTYPE: $
2277	ALIAS:	2789	ALIAS:
2278	swap_defav = 1	2790	swap_defav = 1
2279	CODE:	2791	CODE:
2280	if (!self->slot)	2792	if (!self->slot)
2281	croak ("cannot swap state with coroutine that has no saved state");	2793	croak ("cannot swap state with coroutine that has no saved state,");
2282	else	2794	else
2283	{	2795	{
2284	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);	2796	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2797	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286		2798
2287	SV *tmp = *src; *src = *dst; *dst = tmp;	2799	SV *tmp = *src; *src = *dst; *dst = tmp;
2288	}	2800	}
		2801
2289		2802
2290	MODULE = Coro::State PACKAGE = Coro	2803	MODULE = Coro::State PACKAGE = Coro
2291		2804
2292	BOOT:	2805	BOOT:
2293	{	2806	{
…		…
2321	coroapi.ready = api_ready;	2834	coroapi.ready = api_ready;
2322	coroapi.is_ready = api_is_ready;	2835	coroapi.is_ready = api_is_ready;
2323	coroapi.nready = coro_nready;	2836	coroapi.nready = coro_nready;
2324	coroapi.current = coro_current;	2837	coroapi.current = coro_current;
2325		2838
2326	GCoroAPI = &coroapi;	2839	/*GCoroAPI = &coroapi;*/
2327	sv_setiv (sv, (IV)&coroapi);	2840	sv_setiv (sv, (IV)&coroapi);
2328	SvREADONLY_on (sv);	2841	SvREADONLY_on (sv);
2329	}	2842	}
2330	}	2843	}
2331		2844
2332	void	2845	void
2333	schedule (...)	2846	schedule (...)
2334	CODE:	2847	CODE:
2335	{	2848	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336	static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop };
2337	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2338	}
2339		2849
2340	void	2850	void
2341	cede (...)	2851	cede (...)
2342	CODE:	2852	CODE:
2343	{	2853	CORO_EXECUTE_SLF_XS (slf_init_cede);
2344	static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346	}
2347		2854
2348	void	2855	void
2349	cede_notself (...)	2856	cede_notself (...)
2350	CODE:	2857	CODE:
2351	{	2858	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352	static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354	}
2355		2859
2356	void	2860	void
2357	_set_current (SV *current)	2861	_set_current (SV *current)
2358	PROTOTYPE: $	2862	PROTOTYPE: $
2359	CODE:	2863	CODE:
…		…
2362		2866
2363	void	2867	void
2364	_set_readyhook (SV *hook)	2868	_set_readyhook (SV *hook)
2365	PROTOTYPE: $	2869	PROTOTYPE: $
2366	CODE:	2870	CODE:
2367	LOCK;
2368	SvREFCNT_dec (coro_readyhook);	2871	SvREFCNT_dec (coro_readyhook);
2369	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2872	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370	UNLOCK;
2371		2873
2372	int	2874	int
2373	prio (Coro::State coro, int newprio = 0)	2875	prio (Coro::State coro, int newprio = 0)
		2876	PROTOTYPE: $;$
2374	ALIAS:	2877	ALIAS:
2375	nice = 1	2878	nice = 1
2376	CODE:	2879	CODE:
2377	{	2880	{
2378	RETVAL = coro->prio;	2881	RETVAL = coro->prio;
…		…
2410	# for async_pool speedup	2913	# for async_pool speedup
2411	void	2914	void
2412	_pool_1 (SV *cb)	2915	_pool_1 (SV *cb)
2413	CODE:	2916	CODE:
2414	{	2917	{
2415	struct coro *coro = SvSTATE (coro_current);
2416	HV *hv = (HV *)SvRV (coro_current);	2918	HV *hv = (HV *)SvRV (coro_current);
		2919	struct coro *coro = SvSTATE_hv ((SV *)hv);
2417	AV *defav = GvAV (PL_defgv);	2920	AV *defav = GvAV (PL_defgv);
2418	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2921	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419	AV *invoke_av;	2922	AV *invoke_av;
2420	int i, len;	2923	int i, len;
2421		2924
…		…
2442	{	2945	{
2443	av_fill (defav, len - 1);	2946	av_fill (defav, len - 1);
2444	for (i = 0; i < len; ++i)	2947	for (i = 0; i < len; ++i)
2445	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2948	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2446	}	2949	}
2447
2448	SvREFCNT_dec (invoke);
2449	}	2950	}
2450		2951
2451	void	2952	void
2452	_pool_2 (SV *cb)	2953	_pool_2 (SV *cb)
2453	CODE:	2954	CODE:
2454	{	2955	{
2455	struct coro *coro = SvSTATE (coro_current);	2956	HV *hv = (HV *)SvRV (coro_current);
		2957	struct coro *coro = SvSTATE_hv ((SV *)hv);
2456		2958
2457	sv_setsv (cb, &PL_sv_undef);	2959	sv_setsv (cb, &PL_sv_undef);
2458		2960
2459	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2961	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460	coro->saved_deffh = 0;	2962	coro->saved_deffh = 0;
…		…
2467	SvREFCNT_dec (old);	2969	SvREFCNT_dec (old);
2468	croak ("\3async_pool terminate\2\n");	2970	croak ("\3async_pool terminate\2\n");
2469	}	2971	}
2470		2972
2471	av_clear (GvAV (PL_defgv));	2973	av_clear (GvAV (PL_defgv));
2472	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2974	hv_store (hv, "desc", sizeof ("desc") - 1,
2473	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2975	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474		2976
2475	coro->prio = 0;	2977	coro->prio = 0;
2476		2978
2477	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2979	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478	api_trace (aTHX_ coro_current, 0);	2980	api_trace (aTHX_ coro_current, 0);
2479		2981
2480	av_push (av_async_pool, newSVsv (coro_current));	2982	av_push (av_async_pool, newSVsv (coro_current));
2481	}	2983	}
2482		2984
2483	#if 0
2484
2485	void
2486	_generator_call (...)
2487	PROTOTYPE: @
2488	PPCODE:
2489	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490	xxxx
2491	abort ();
2492
2493	SV *	2985	SV *
2494	gensub (SV *sub, ...)	2986	rouse_cb ()
2495	PROTOTYPE: &;@	2987	PROTOTYPE:
2496	CODE:	2988	CODE:
2497	{	2989	RETVAL = coro_new_rouse_cb (aTHX);
2498	struct coro *coro;
2499	MAGIC *mg;
2500	CV *xcv;
2501	CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502	int i;
2503
2504	CvGV (ncv) = CvGV (cv);
2505	CvFILE (ncv) = CvFILE (cv);
2506
2507	Newz (0, coro, 1, struct coro);
2508	coro->args = newAV ();
2509	coro->flags = CF_NEW;
2510
2511	av_extend (coro->args, items - 1);
2512	for (i = 1; i < items; i++)
2513	av_push (coro->args, newSVsv (ST (i)));
2514
2515	CvISXSUB_on (ncv);
2516	CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520	CvXSUB (ncv) = CvXSUB (xcv);
2521	CvANON_on (ncv);
2522
2523	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524	RETVAL = newRV_noinc ((SV *)ncv);
2525	}
2526	OUTPUT:	2990	OUTPUT:
2527	RETVAL	2991	RETVAL
2528		2992
2529	#endif
2530
2531
2532	MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534	void	2993	void
2535	_get_state (SV *self)	2994	rouse_wait (SV *cb = 0)
		2995	PROTOTYPE: ;$
2536	PPCODE:	2996	PPCODE:
2537	{	2997	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538	AV *defav = GvAV (PL_defgv);
2539	AV *av = newAV ();
2540	int i;
2541	SV *data_sv = newSV (sizeof (struct io_state));
2542	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543	SvCUR_set (data_sv, sizeof (struct io_state));
2544	SvPOK_only (data_sv);
2545		2998
2546	data->errorno = errno;
2547	data->laststype = PL_laststype;
2548	data->laststatval = PL_laststatval;
2549	data->statcache = PL_statcache;
2550		2999
2551	av_extend (av, AvFILLp (defav) + 1 + 1);	3000	MODULE = Coro::State PACKAGE = PerlIO::cede
2552		3001
2553	for (i = 0; i <= AvFILLp (defav); ++i)	3002	BOOT:
2554	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));	3003	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2555		3004
2556	av_push (av, data_sv);
2557		3005
2558	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	3006	MODULE = Coro::State PACKAGE = Coro::Semaphore
2559		3007
2560	api_ready (aTHX_ self);	3008	SV *
2561	}	3009	new (SV *klass, SV *count = 0)
		3010	CODE:
		3011	RETVAL = sv_bless (
		3012	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
		3013	GvSTASH (CvGV (cv))
		3014	);
		3015	OUTPUT:
		3016	RETVAL
		3017
		3018	# helper for Coro::Channel
		3019	SV *
		3020	_alloc (int count)
		3021	CODE:
		3022	RETVAL = coro_waitarray_new (aTHX_ count);
		3023	OUTPUT:
		3024	RETVAL
		3025
		3026	SV *
		3027	count (SV *self)
		3028	CODE:
		3029	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		3030	OUTPUT:
		3031	RETVAL
2562		3032
2563	void	3033	void
2564	_set_state (SV *state)	3034	up (SV *self, int adjust = 1)
2565	PROTOTYPE: $	3035	ALIAS:
		3036	adjust = 1
		3037	CODE:
		3038	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
		3039
		3040	void
		3041	down (SV *self)
		3042	CODE:
		3043	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3044
		3045	void
		3046	wait (SV *self)
		3047	CODE:
		3048	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
		3049
		3050	void
		3051	try (SV *self)
		3052	PPCODE:
		3053	{
		3054	AV *av = (AV *)SvRV (self);
		3055	SV *count_sv = AvARRAY (av)[0];
		3056	IV count = SvIVX (count_sv);
		3057
		3058	if (count > 0)
		3059	{
		3060	--count;
		3061	SvIVX (count_sv) = count;
		3062	XSRETURN_YES;
		3063	}
		3064	else
		3065	XSRETURN_NO;
		3066	}
		3067
		3068	void
		3069	waiters (SV *self)
		3070	PPCODE:
		3071	{
		3072	AV *av = (AV *)SvRV (self);
		3073	int wcount = AvFILLp (av) + 1 - 1;
		3074
		3075	if (GIMME_V == G_SCALAR)
		3076	XPUSHs (sv_2mortal (newSViv (wcount)));
		3077	else
		3078	{
		3079	int i;
		3080	EXTEND (SP, wcount);
		3081	for (i = 1; i <= wcount; ++i)
		3082	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
		3083	}
		3084	}
		3085
		3086	MODULE = Coro::State PACKAGE = Coro::Signal
		3087
		3088	SV *
		3089	new (SV *klass)
2566	PPCODE:	3090	CODE:
		3091	RETVAL = sv_bless (
		3092	coro_waitarray_new (aTHX_ 0),
		3093	GvSTASH (CvGV (cv))
		3094	);
		3095	OUTPUT:
		3096	RETVAL
		3097
		3098	void
		3099	wait (SV *self)
		3100	CODE:
		3101	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3102
		3103	void
		3104	broadcast (SV *self)
		3105	CODE:
2567	{	3106	{
2568	AV *av = (AV *)SvRV (state);	3107	AV *av = (AV *)SvRV (self);
2569	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);	3108	coro_signal_wake (aTHX_ av, AvFILLp (av));
2570	int i;	3109	}
2571		3110
2572	errno = data->errorno;	3111	void
2573	PL_laststype = data->laststype;	3112	send (SV *self)
2574	PL_laststatval = data->laststatval;	3113	CODE:
2575	PL_statcache = data->statcache;	3114	{
		3115	AV *av = (AV *)SvRV (self);
2576		3116
2577	EXTEND (SP, AvFILLp (av));	3117	if (AvFILLp (av))
2578	for (i = 0; i < AvFILLp (av); ++i)	3118	coro_signal_wake (aTHX_ av, 1);
2579	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));	3119	else
		3120	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580	}	3121	}
		3122
		3123	IV
		3124	awaited (SV *self)
		3125	CODE:
		3126	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3127	OUTPUT:
		3128	RETVAL
2581		3129
2582		3130
2583	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3131	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584		3132
2585	BOOT:	3133	BOOT:
2586	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	3134	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587		3135
2588	SV *	3136	void
2589	_schedule (...)	3137	_schedule (...)
2590	PROTOTYPE: @
2591	CODE:	3138	CODE:
2592	{	3139	{
2593	static int incede;	3140	static int incede;
2594		3141
2595	api_cede_notself (aTHX);	3142	api_cede_notself (aTHX);
…		…
2601	sv_setsv (sv_activity, &PL_sv_undef);	3148	sv_setsv (sv_activity, &PL_sv_undef);
2602	if (coro_nready >= incede)	3149	if (coro_nready >= incede)
2603	{	3150	{
2604	PUSHMARK (SP);	3151	PUSHMARK (SP);
2605	PUTBACK;	3152	PUTBACK;
2606	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3153	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607	SPAGAIN;
2608	}	3154	}
2609		3155
2610	--incede;	3156	--incede;
2611	}	3157	}
2612		3158
2613		3159
2614	MODULE = Coro::State PACKAGE = PerlIO::cede	3160	MODULE = Coro::State PACKAGE = Coro::AIO
2615		3161
2616	BOOT:	3162	void
2617	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3163	_register (char *target, char *proto, SV *req)
		3164	CODE:
		3165	{
		3166	HV *st;
		3167	GV *gvp;
		3168	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		3169	/* newXSproto doesn't return the CV on 5.8 */
		3170	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3171	sv_setpv ((SV *)slf_cv, proto);
		3172	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3173	}
2618		3174

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