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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.286 by root, Mon Nov 17 04:19:49 2008 UTC vs.
Revision 1.310 by root, Wed Nov 19 16:01:32 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	# if CORO_PTHREAD	153	# if CORO_PTHREAD
148	static void *coro_thx;	154	static void *coro_thx;
149	# endif	155	# endif
150	#endif	156	#endif
151		157
152	/* helper storage struct for Coro::AIO */
153	struct io_state
154	{
155	AV *res;
156	int errorno;
157	I32 laststype; /* U16 in 5.10.0 */
158	int laststatval;
159	Stat_t statcache;
160	};
161
162	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);
163		163
164	static U32 cctx_gen;	164	static U32 cctx_gen;
165	static size_t cctx_stacksize = CORO_STACKSIZE;	165	static size_t cctx_stacksize = CORO_STACKSIZE;
166	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
167	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
…		…
246	/* state data */	246	/* state data */
247	struct CoroSLF slf_frame; /* saved slf frame */	247	struct CoroSLF slf_frame; /* saved slf frame */
248	AV *mainstack;	248	AV *mainstack;
249	perl_slots *slot; /* basically the saved sp */	249	perl_slots *slot; /* basically the saved sp */
250		250
		251	CV *startcv; /* the CV to execute */
251	AV *args; /* data associated with this coroutine (initial args) */	252	AV *args; /* data associated with this coroutine (initial args) */
252	int refcnt; /* coroutines are refcounted, yes */	253	int refcnt; /* coroutines are refcounted, yes */
253	int flags; /* CF_ flags */	254	int flags; /* CF_ flags */
254	HV *hv; /* the perl hash associated with this coro, if any */	255	HV *hv; /* the perl hash associated with this coro, if any */
255	void (*on_destroy)(pTHX_ struct coro *coro);	256	void (*on_destroy)(pTHX_ struct coro *coro);
256		257
257	/* statistics */	258	/* statistics */
258	int usecount; /* number of transfers to this coro */	259	int usecount; /* number of transfers to this coro */
259		260
260	/* coro process data */	261	/* coro process data */
261	int prio;	262	int prio;
262	SV *throw; /* exception to be thrown */	263	SV *except; /* exception to be thrown */
		264	SV *rouse_cb;
263		265
264	/* async_pool */	266	/* async_pool */
265	SV *saved_deffh;	267	SV *saved_deffh;
266		268
267	/* linked list */	269	/* linked list */
…		…
273		275
274	/* the following variables are effectively part of the perl context */	276	/* the following variables are effectively part of the perl context */
275	/* and get copied between struct coro and these variables */	277	/* and get copied between struct coro and these variables */
276	/* the mainr easonw e don't support windows process emulation */	278	/* the mainr easonw e don't support windows process emulation */
277	static struct CoroSLF slf_frame; /* the current slf frame */	279	static struct CoroSLF slf_frame; /* the current slf frame */
278	static SV *coro_throw;
279		280
280	/** Coro ********************************************************************/	281	/** Coro ********************************************************************/
281		282
282	#define PRIO_MAX 3	283	#define PRIO_MAX 3
283	#define PRIO_HIGH 1	284	#define PRIO_HIGH 1
…		…
288		289
289	/* for Coro.pm */	290	/* for Coro.pm */
290	static SV *coro_current;	291	static SV *coro_current;
291	static SV *coro_readyhook;	292	static SV *coro_readyhook;
292	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	293	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		294	static CV *cv_coro_run;
293	static struct coro *coro_first;	295	static struct coro *coro_first;
294	#define coro_nready coroapi.nready	296	#define coro_nready coroapi.nready
295		297
296	/** lowlevel stuff **********************************************************/	298	/** lowlevel stuff **********************************************************/
297		299
…		…
321	#if PERL_VERSION_ATLEAST (5,10,0)	323	#if PERL_VERSION_ATLEAST (5,10,0)
322	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	324	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
323	get_hv (name, create);	325	get_hv (name, create);
324	#endif	326	#endif
325	return get_hv (name, create);	327	return get_hv (name, create);
		328	}
		329
		330	/* may croak */
		331	INLINE CV *
		332	coro_sv_2cv (SV *sv)
		333	{
		334	HV *st;
		335	GV *gvp;
		336	return sv_2cv (sv, &st, &gvp, 0);
326	}	337	}
327		338
328	static AV *	339	static AV *
329	coro_clone_padlist (pTHX_ CV *cv)	340	coro_clone_padlist (pTHX_ CV *cv)
330	{	341	{
…		…
384	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385		396
386	return 0;	397	return 0;
387	}	398	}
388		399
389	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	400	#define CORO_MAGIC_type_cv 26
390	#define CORO_MAGIC_type_state PERL_MAGIC_ext	401	#define CORO_MAGIC_type_state PERL_MAGIC_ext
391		402
392	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
393	0, 0, 0, 0,	404	0, 0, 0, 0,
394	coro_cv_free	405	coro_cv_free
395	};	406	};
396		407
		408	#define CORO_MAGIC_NN(sv, type) \
		409	(expect_true (SvMAGIC (sv)->mg_type == type) \
		410	? SvMAGIC (sv) \
		411	: mg_find (sv, type))
		412
397	#define CORO_MAGIC(sv, type) \	413	#define CORO_MAGIC(sv, type) \
398	expect_true (SvMAGIC (sv)) \	414	(expect_true (SvMAGIC (sv)) \
399	? expect_true (SvMAGIC (sv)->mg_type == type) \	415	? CORO_MAGIC_NN (sv, type) \
400	? SvMAGIC (sv) \
401	: mg_find (sv, type) \
402	: 0	416	: 0)
403		417
404	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	418	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	419	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406		420
407	INLINE struct coro *	421	INLINE struct coro *
408	SvSTATE_ (pTHX_ SV *coro)	422	SvSTATE_ (pTHX_ SV *coro)
409	{	423	{
410	HV *stash;	424	HV *stash;
…		…
428	return (struct coro *)mg->mg_ptr;	442	return (struct coro *)mg->mg_ptr;
429	}	443	}
430		444
431	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	445	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432		446
433	/* fastert than SvSTATE, but expects a coroutine hv */	447	/* faster than SvSTATE, but expects a coroutine hv */
434	INLINE struct coro *	448	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435	SvSTATE_hv (SV *sv)
436	{
437	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438	? SvMAGIC (sv)
439	: mg_find (sv, CORO_MAGIC_type_state);
440
441	return (struct coro *)mg->mg_ptr;
442	}
443
444	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))	449	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445		450
446	/* the next two functions merely cache the padlists */	451	/* the next two functions merely cache the padlists */
447	static void	452	static void
448	get_padlist (pTHX_ CV *cv)	453	get_padlist (pTHX_ CV *cv)
…		…
455	else	460	else
456	{	461	{
457	#if CORO_PREFER_PERL_FUNCTIONS	462	#if CORO_PREFER_PERL_FUNCTIONS
458	/* this is probably cleaner? but also slower! */	463	/* this is probably cleaner? but also slower! */
459	/* in practise, it seems to be less stable */	464	/* in practise, it seems to be less stable */
460	CV *cp = Perl_cv_clone (cv);	465	CV *cp = Perl_cv_clone (aTHX_ cv);
461	CvPADLIST (cv) = CvPADLIST (cp);	466	CvPADLIST (cv) = CvPADLIST (cp);
462	CvPADLIST (cp) = 0;	467	CvPADLIST (cp) = 0;
463	SvREFCNT_dec (cp);	468	SvREFCNT_dec (cp);
464	#else	469	#else
465	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	470	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
518		523
519	PUTBACK;	524	PUTBACK;
520	}	525	}
521		526
522	slf_frame = c->slf_frame;	527	slf_frame = c->slf_frame;
523	coro_throw = c->throw;	528	CORO_THROW = c->except;
524	}	529	}
525		530
526	static void	531	static void
527	save_perl (pTHX_ Coro__State c)	532	save_perl (pTHX_ Coro__State c)
528	{	533	{
529	c->throw = coro_throw;	534	c->except = CORO_THROW;
530	c->slf_frame = slf_frame;	535	c->slf_frame = slf_frame;
531		536
532	{	537	{
533	dSP;	538	dSP;
534	I32 cxix = cxstack_ix;	539	I32 cxix = cxstack_ix;
…		…
609	* of perl.c:init_stacks, except that it uses less memory	614	* of perl.c:init_stacks, except that it uses less memory
610	* on the (sometimes correct) assumption that coroutines do	615	* on the (sometimes correct) assumption that coroutines do
611	* not usually need a lot of stackspace.	616	* not usually need a lot of stackspace.
612	*/	617	*/
613	#if CORO_PREFER_PERL_FUNCTIONS	618	#if CORO_PREFER_PERL_FUNCTIONS
614	# define coro_init_stacks init_stacks	619	# define coro_init_stacks(thx) init_stacks ()
615	#else	620	#else
616	static void	621	static void
617	coro_init_stacks (pTHX)	622	coro_init_stacks (pTHX)
618	{	623	{
619	PL_curstackinfo = new_stackinfo(32, 8);	624	PL_curstackinfo = new_stackinfo(32, 8);
…		…
827	slf_check_nop (pTHX_ struct CoroSLF *frame)	832	slf_check_nop (pTHX_ struct CoroSLF *frame)
828	{	833	{
829	return 0;	834	return 0;
830	}	835	}
831		836
		837	static UNOP coro_setup_op;
		838
832	static void NOINLINE /* noinline to keep it out of the transfer fast path */	839	static void NOINLINE /* noinline to keep it out of the transfer fast path */
833	coro_setup (pTHX_ struct coro *coro)	840	coro_setup (pTHX_ struct coro *coro)
834	{	841	{
835	/*	842	/*
836	* emulate part of the perl startup here.	843	* emulate part of the perl startup here.
…		…
864	{	871	{
865	dSP;	872	dSP;
866	UNOP myop;	873	UNOP myop;
867		874
868	Zero (&myop, 1, UNOP);	875	Zero (&myop, 1, UNOP);
869	myop.op_next = Nullop;	876	myop.op_next = Nullop;
		877	myop.op_type = OP_ENTERSUB;
870	myop.op_flags = OPf_WANT_VOID;	878	myop.op_flags = OPf_WANT_VOID;
871		879
872	PUSHMARK (SP);	880	PUSHMARK (SP);
873	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	881	PUSHs ((SV *)coro->startcv);
874	PUTBACK;	882	PUTBACK;
875	PL_op = (OP *)&myop;	883	PL_op = (OP *)&myop;
876	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	884	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877	SPAGAIN;
878	}	885	}
879		886
880	/* this newly created coroutine might be run on an existing cctx which most	887	/* this newly created coroutine might be run on an existing cctx which most
881	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	888	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882	*/	889	*/
883	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	890	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	891	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
885		892
886	coro_throw = coro->throw;	893	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		894	coro_setup_op.op_next = PL_op;
		895	coro_setup_op.op_type = OP_CUSTOM;
		896	coro_setup_op.op_ppaddr = pp_slf;
		897	/* no flags etc. required, as an init function won't be called */
		898
		899	PL_op = (OP *)&coro_setup_op;
		900
		901	/* copy throw, in case it was set before coro_setup */
		902	CORO_THROW = coro->except;
887	}	903	}
888		904
889	static void	905	static void
890	coro_destruct (pTHX_ struct coro *coro)	906	coro_destruct (pTHX_ struct coro *coro)
891	{	907	{
…		…
915		931
916	SvREFCNT_dec (PL_diehook);	932	SvREFCNT_dec (PL_diehook);
917	SvREFCNT_dec (PL_warnhook);	933	SvREFCNT_dec (PL_warnhook);
918		934
919	SvREFCNT_dec (coro->saved_deffh);	935	SvREFCNT_dec (coro->saved_deffh);
920	SvREFCNT_dec (coro_throw);	936	SvREFCNT_dec (coro->rouse_cb);
921		937
922	coro_destruct_stacks (aTHX);	938	coro_destruct_stacks (aTHX);
923	}	939	}
924		940
925	INLINE void	941	INLINE void
…		…
1012	SAVETMPS;	1028	SAVETMPS;
1013	EXTEND (SP, 3);	1029	EXTEND (SP, 3);
1014	PUSHMARK (SP);	1030	PUSHMARK (SP);
1015	PUSHs (&PL_sv_yes);	1031	PUSHs (&PL_sv_yes);
1016	PUSHs (fullname);	1032	PUSHs (fullname);
1017	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1033	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018	PUTBACK;	1034	PUTBACK;
1019	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1035	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1036	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021	SPAGAIN;	1037	SPAGAIN;
1022	FREETMPS;	1038	FREETMPS;
…		…
1054		1070
1055	TAINT_NOT;	1071	TAINT_NOT;
1056	return 0;	1072	return 0;
1057	}	1073	}
1058		1074
		1075	static struct coro_cctx *cctx_ssl_cctx;
		1076	static struct CoroSLF cctx_ssl_frame;
		1077
1059	static void	1078	static void
1060	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)	1079	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061	{	1080	{
1062	ta->prev = (struct coro *)cctx;	1081	ta->prev = (struct coro *)cctx_ssl_cctx;
1063	ta->next = 0;	1082	ta->next = 0;
1064	}	1083	}
1065		1084
1066	/* inject a fake call to Coro::State::_cctx_init into the execution */	1085	static int
1067	/* _cctx_init should be careful, as it could be called at almost any time */	1086	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068	/* during execution of a perl program */	1087	{
1069	/* also initialises PL_top_env */	1088	*frame = cctx_ssl_frame;
		1089
		1090	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1091	}
		1092
		1093	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1070	static void NOINLINE	1094	static void NOINLINE
1071	cctx_prepare (pTHX_ coro_cctx *cctx)	1095	cctx_prepare (pTHX_ coro_cctx *cctx)
1072	{	1096	{
1073	dSP;
1074	UNOP myop;
1075
1076	PL_top_env = &PL_start_env;	1097	PL_top_env = &PL_start_env;
1077		1098
1078	if (cctx->flags & CC_TRACE)	1099	if (cctx->flags & CC_TRACE)
1079	PL_runops = runops_trace;	1100	PL_runops = runops_trace;
1080		1101
1081	Zero (&myop, 1, UNOP);	1102	/* we already must be executing an SLF op, there is no other valid way
1082	myop.op_next = PL_op;	1103	* that can lead to creation of a new cctx */
1083	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1104	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1105	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084		1106
1085	PUSHMARK (SP);	1107	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086	EXTEND (SP, 2);	1108	cctx_ssl_cctx = cctx;
1087	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1109	cctx_ssl_frame = slf_frame;
1088	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1110
1089	PUTBACK;	1111	slf_frame.prepare = slf_prepare_set_stacklevel;
1090	PL_op = (OP *)&myop;	1112	slf_frame.check = slf_check_set_stacklevel;
1091	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092	SPAGAIN;
1093	}	1113	}
1094		1114
1095	/* the tail of transfer: execute stuff we can only do after a transfer */	1115	/* the tail of transfer: execute stuff we can only do after a transfer */
1096	INLINE void	1116	INLINE void
1097	transfer_tail (pTHX)	1117	transfer_tail (pTHX)
…		…
1124	transfer_tail (aTHX);	1144	transfer_tail (aTHX);
1125		1145
1126	/* somebody or something will hit me for both perl_run and PL_restartop */	1146	/* somebody or something will hit me for both perl_run and PL_restartop */
1127	PL_restartop = PL_op;	1147	PL_restartop = PL_op;
1128	perl_run (PL_curinterp);	1148	perl_run (PL_curinterp);
		1149	/*
		1150	* Unfortunately, there is no way to get at the return values of the
		1151	* coro body here, as perl_run destroys these
		1152	*/
1129		1153
1130	/*	1154	/*
1131	* If perl-run returns we assume exit() was being called or the coro	1155	* If perl-run returns we assume exit() was being called or the coro
1132	* fell off the end, which seems to be the only valid (non-bug)	1156	* fell off the end, which seems to be the only valid (non-bug)
1133	* reason for perl_run to return. We try to exit by jumping to the	1157	* reason for perl_run to return. We try to exit by jumping to the
…		…
1313	dSTACKLEVEL;	1337	dSTACKLEVEL;
1314		1338
1315	/* sometimes transfer is only called to set idle_sp */	1339	/* sometimes transfer is only called to set idle_sp */
1316	if (expect_false (!next))	1340	if (expect_false (!next))
1317	{	1341	{
1318	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;	1342	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1319	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1343	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320	}	1344	}
1321	else if (expect_true (prev != next))	1345	else if (expect_true (prev != next))
1322	{	1346	{
1323	coro_cctx *prev__cctx;	1347	coro_cctx *prev__cctx;
…		…
1348		1372
1349	prev__cctx = prev->cctx;	1373	prev__cctx = prev->cctx;
1350		1374
1351	/* possibly untie and reuse the cctx */	1375	/* possibly untie and reuse the cctx */
1352	if (expect_true (	1376	if (expect_true (
1353	prev__cctx->idle_sp == (void *)stacklevel	1377	prev__cctx->idle_sp == STACKLEVEL
1354	&& !(prev__cctx->flags & CC_TRACE)	1378	&& !(prev__cctx->flags & CC_TRACE)
1355	&& !force_cctx	1379	&& !force_cctx
1356	))	1380	))
1357	{	1381	{
1358	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1382	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1425		1449
1426	coro->slot = 0;	1450	coro->slot = 0;
1427	}	1451	}
1428		1452
1429	cctx_destroy (coro->cctx);	1453	cctx_destroy (coro->cctx);
		1454	SvREFCNT_dec (coro->startcv);
1430	SvREFCNT_dec (coro->args);	1455	SvREFCNT_dec (coro->args);
		1456	SvREFCNT_dec (CORO_THROW);
1431		1457
1432	if (coro->next) coro->next->prev = coro->prev;	1458	if (coro->next) coro->next->prev = coro->prev;
1433	if (coro->prev) coro->prev->next = coro->next;	1459	if (coro->prev) coro->prev->next = coro->next;
1434	if (coro == coro_first) coro_first = coro->next;	1460	if (coro == coro_first) coro_first = coro->next;
1435		1461
…		…
1489		1515
1490	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1516	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491	TRANSFER (ta, 1);	1517	TRANSFER (ta, 1);
1492	}	1518	}
1493		1519
		1520	/*****************************************************************************/
		1521	/* gensub: simple closure generation utility */
		1522
		1523	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1524
		1525	/* create a closure from XS, returns a code reference */
		1526	/* the arg can be accessed via GENSUB_ARG from the callback */
		1527	/* the callback must use dXSARGS/XSRETURN */
		1528	static SV *
		1529	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1530	{
		1531	CV *cv = (CV *)newSV (0);
		1532
		1533	sv_upgrade ((SV *)cv, SVt_PVCV);
		1534
		1535	CvANON_on (cv);
		1536	CvISXSUB_on (cv);
		1537	CvXSUB (cv) = xsub;
		1538	GENSUB_ARG = arg;
		1539
		1540	return newRV_noinc ((SV *)cv);
		1541	}
		1542
1494	/** Coro ********************************************************************/	1543	/** Coro ********************************************************************/
1495		1544
1496	INLINE void	1545	INLINE void
1497	coro_enq (pTHX_ struct coro *coro)	1546	coro_enq (pTHX_ struct coro *coro)
1498	{	1547	{
…		…
1541	ENTER;	1590	ENTER;
1542	SAVETMPS;	1591	SAVETMPS;
1543		1592
1544	PUSHMARK (SP);	1593	PUSHMARK (SP);
1545	PUTBACK;	1594	PUTBACK;
1546	call_sv (sv_hook, G_DISCARD);	1595	call_sv (sv_hook, G_VOID | G_DISCARD);
1547	SPAGAIN;
1548		1596
1549	FREETMPS;	1597	FREETMPS;
1550	LEAVE;	1598	LEAVE;
1551	}	1599	}
1552		1600
…		…
1579	ENTER;	1627	ENTER;
1580	SAVETMPS;	1628	SAVETMPS;
1581		1629
1582	PUSHMARK (SP);	1630	PUSHMARK (SP);
1583	PUTBACK;	1631	PUTBACK;
1584	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1632	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1585	SPAGAIN;
1586		1633
1587	FREETMPS;	1634	FREETMPS;
1588	LEAVE;	1635	LEAVE;
1589	continue;	1636	continue;
1590	}	1637	}
…		…
1697	if (coro->flags & CF_RUNNING)	1744	if (coro->flags & CF_RUNNING)
1698	PL_runops = RUNOPS_DEFAULT;	1745	PL_runops = RUNOPS_DEFAULT;
1699	else	1746	else
1700	coro->slot->runops = RUNOPS_DEFAULT;	1747	coro->slot->runops = RUNOPS_DEFAULT;
1701	}	1748	}
		1749	}
		1750
		1751	/*****************************************************************************/
		1752	/* rouse callback */
		1753
		1754	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1755
		1756	static void
		1757	coro_rouse_callback (pTHX_ CV *cv)
		1758	{
		1759	dXSARGS;
		1760	SV *data = (SV *)GENSUB_ARG;
		1761
		1762	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1763	{
		1764	/* first call, set args */
		1765	int i;
		1766	AV *av = newAV ();
		1767	SV *coro = SvRV (data);
		1768
		1769	SvRV_set (data, (SV *)av);
		1770	api_ready (aTHX_ coro);
		1771	SvREFCNT_dec (coro);
		1772
		1773	/* better take a full copy of the arguments */
		1774	while (items--)
		1775	av_store (av, items, newSVsv (ST (items)));
		1776	}
		1777
		1778	XSRETURN_EMPTY;
		1779	}
		1780
		1781	static int
		1782	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1783	{
		1784	SV *data = (SV *)frame->data;
		1785
		1786	if (CORO_THROW)
		1787	return 0;
		1788
		1789	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1790	return 1;
		1791
		1792	/* now push all results on the stack */
		1793	{
		1794	dSP;
		1795	AV *av = (AV *)SvRV (data);
		1796	int i;
		1797
		1798	EXTEND (SP, AvFILLp (av) + 1);
		1799	for (i = 0; i <= AvFILLp (av); ++i)
		1800	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1801
		1802	/* we have stolen the elements, so ste length to zero and free */
		1803	AvFILLp (av) = -1;
		1804	av_undef (av);
		1805
		1806	PUTBACK;
		1807	}
		1808
		1809	return 0;
		1810	}
		1811
		1812	static void
		1813	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1814	{
		1815	SV *cb;
		1816
		1817	if (items)
		1818	cb = arg [0];
		1819	else
		1820	{
		1821	struct coro *coro = SvSTATE_current;
		1822
		1823	if (!coro->rouse_cb)
		1824	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1825
		1826	cb = sv_2mortal (coro->rouse_cb);
		1827	coro->rouse_cb = 0;
		1828	}
		1829
		1830	if (!SvROK (cb)
		1831	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1832	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1833	croak ("Coro::rouse_wait called with illegal callback argument,");
		1834
		1835	{
		1836	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1837	SV *data = (SV *)GENSUB_ARG;
		1838
		1839	frame->data = (void *)data;
		1840	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		1841	frame->check = slf_check_rouse_wait;
		1842	}
		1843	}
		1844
		1845	static SV *
		1846	coro_new_rouse_cb (pTHX)
		1847	{
		1848	HV *hv = (HV *)SvRV (coro_current);
		1849	struct coro *coro = SvSTATE_hv (hv);
		1850	SV *data = newRV_inc ((SV *)hv);
		1851	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		1852
		1853	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		1854	SvREFCNT_dec (data); /* magicext increases the refcount */
		1855
		1856	SvREFCNT_dec (coro->rouse_cb);
		1857	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		1858
		1859	return cb;
		1860	}
		1861
		1862	/*****************************************************************************/
		1863	/* schedule-like-function opcode (SLF) */
		1864
		1865	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1866	static const CV *slf_cv;
		1867	static SV **slf_argv;
		1868	static int slf_argc, slf_arga; /* count, allocated */
		1869	static I32 slf_ax; /* top of stack, for restore */
		1870
		1871	/* this restores the stack in the case we patched the entersub, to */
		1872	/* recreate the stack frame as perl will on following calls */
		1873	/* since entersub cleared the stack */
		1874	static OP *
		1875	pp_restore (pTHX)
		1876	{
		1877	int i;
		1878	SV **SP = PL_stack_base + slf_ax;
		1879
		1880	PUSHMARK (SP);
		1881
		1882	EXTEND (SP, slf_argc + 1);
		1883
		1884	for (i = 0; i < slf_argc; ++i)
		1885	PUSHs (sv_2mortal (slf_argv [i]));
		1886
		1887	PUSHs ((SV *)CvGV (slf_cv));
		1888
		1889	RETURNOP (slf_restore.op_first);
		1890	}
		1891
		1892	static void
		1893	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1894	{
		1895	SV **arg = (SV **)slf_frame.data;
		1896
		1897	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1898	}
		1899
		1900	static void
		1901	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1902	{
		1903	if (items != 2)
		1904	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1905
		1906	frame->prepare = slf_prepare_transfer;
		1907	frame->check = slf_check_nop;
		1908	frame->data = (void *)arg; /* let's hope it will stay valid */
		1909	}
		1910
		1911	static void
		1912	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1913	{
		1914	frame->prepare = prepare_schedule;
		1915	frame->check = slf_check_nop;
		1916	}
		1917
		1918	static void
		1919	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1920	{
		1921	frame->prepare = prepare_cede;
		1922	frame->check = slf_check_nop;
		1923	}
		1924
		1925	static void
		1926	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1927	{
		1928	frame->prepare = prepare_cede_notself;
		1929	frame->check = slf_check_nop;
		1930	}
		1931
		1932	/*
		1933	* these not obviously related functions are all rolled into one
		1934	* function to increase chances that they all will call transfer with the same
		1935	* stack offset
		1936	* SLF stands for "schedule-like-function".
		1937	*/
		1938	static OP *
		1939	pp_slf (pTHX)
		1940	{
		1941	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1942
		1943	/* set up the slf frame, unless it has already been set-up */
		1944	/* the latter happens when a new coro has been started */
		1945	/* or when a new cctx was attached to an existing coroutine */
		1946	if (expect_true (!slf_frame.prepare))
		1947	{
		1948	/* first iteration */
		1949	dSP;
		1950	SV **arg = PL_stack_base + TOPMARK + 1;
		1951	int items = SP - arg; /* args without function object */
		1952	SV *gv = *sp;
		1953
		1954	/* do a quick consistency check on the "function" object, and if it isn't */
		1955	/* for us, divert to the real entersub */
		1956	if (SvTYPE (gv) != SVt_PVGV
		1957	|| !GvCV (gv)
		1958	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1959	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1960
		1961	if (!(PL_op->op_flags & OPf_STACKED))
		1962	{
		1963	/* ampersand-form of call, use @_ instead of stack */
		1964	AV *av = GvAV (PL_defgv);
		1965	arg = AvARRAY (av);
		1966	items = AvFILLp (av) + 1;
		1967	}
		1968
		1969	/* now call the init function, which needs to set up slf_frame */
		1970	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1971	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1972
		1973	/* pop args */
		1974	SP = PL_stack_base + POPMARK;
		1975
		1976	PUTBACK;
		1977	}
		1978
		1979	/* now that we have a slf_frame, interpret it! */
		1980	/* we use a callback system not to make the code needlessly */
		1981	/* complicated, but so we can run multiple perl coros from one cctx */
		1982
		1983	do
		1984	{
		1985	struct coro_transfer_args ta;
		1986
		1987	slf_frame.prepare (aTHX_ &ta);
		1988	TRANSFER (ta, 0);
		1989
		1990	checkmark = PL_stack_sp - PL_stack_base;
		1991	}
		1992	while (slf_frame.check (aTHX_ &slf_frame));
		1993
		1994	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		1995
		1996	/* exception handling */
		1997	if (expect_false (CORO_THROW))
		1998	{
		1999	SV *exception = sv_2mortal (CORO_THROW);
		2000
		2001	CORO_THROW = 0;
		2002	sv_setsv (ERRSV, exception);
		2003	croak (0);
		2004	}
		2005
		2006	/* return value handling - mostly like entersub */
		2007	/* make sure we put something on the stack in scalar context */
		2008	if (GIMME_V == G_SCALAR)
		2009	{
		2010	dSP;
		2011	SV **bot = PL_stack_base + checkmark;
		2012
		2013	if (sp == bot) /* too few, push undef */
		2014	bot [1] = &PL_sv_undef;
		2015	else if (sp != bot + 1) /* too many, take last one */
		2016	bot [1] = *sp;
		2017
		2018	SP = bot + 1;
		2019
		2020	PUTBACK;
		2021	}
		2022
		2023	return NORMAL;
		2024	}
		2025
		2026	static void
		2027	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		2028	{
		2029	int i;
		2030	SV **arg = PL_stack_base + ax;
		2031	int items = PL_stack_sp - arg + 1;
		2032
		2033	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		2034
		2035	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		2036	&& PL_op->op_ppaddr != pp_slf)
		2037	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		2038
		2039	CvFLAGS (cv) |= CVf_SLF;
		2040	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		2041	slf_cv = cv;
		2042
		2043	/* we patch the op, and then re-run the whole call */
		2044	/* we have to put the same argument on the stack for this to work */
		2045	/* and this will be done by pp_restore */
		2046	slf_restore.op_next = (OP *)&slf_restore;
		2047	slf_restore.op_type = OP_CUSTOM;
		2048	slf_restore.op_ppaddr = pp_restore;
		2049	slf_restore.op_first = PL_op;
		2050
		2051	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		2052
		2053	if (PL_op->op_flags & OPf_STACKED)
		2054	{
		2055	if (items > slf_arga)
		2056	{
		2057	slf_arga = items;
		2058	free (slf_argv);
		2059	slf_argv = malloc (slf_arga * sizeof (SV *));
		2060	}
		2061
		2062	slf_argc = items;
		2063
		2064	for (i = 0; i < items; ++i)
		2065	slf_argv [i] = SvREFCNT_inc (arg [i]);
		2066	}
		2067	else
		2068	slf_argc = 0;
		2069
		2070	PL_op->op_ppaddr = pp_slf;
		2071	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		2072
		2073	PL_op = (OP *)&slf_restore;
1702	}	2074	}
1703		2075
1704	/*****************************************************************************/	2076	/*****************************************************************************/
1705	/* PerlIO::cede */	2077	/* PerlIO::cede */
1706		2078
…		…
1775	PerlIOBuf_get_cnt,	2147	PerlIOBuf_get_cnt,
1776	PerlIOBuf_set_ptrcnt,	2148	PerlIOBuf_set_ptrcnt,
1777	};	2149	};
1778		2150
1779	/*****************************************************************************/	2151	/*****************************************************************************/
		2152	/* Coro::Semaphore & Coro::Signal */
1780		2153
1781	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782	static const CV *slf_cv;
1783	static SV **slf_argv;
1784	static int slf_argc, slf_arga; /* count, allocated */
1785	static I32 slf_ax; /* top of stack, for restore */
1786
1787	/* this restores the stack in the case we patched the entersub, to */
1788	/* recreate the stack frame as perl will on following calls */
1789	/* since entersub cleared the stack */
1790	static OP *	2154	static SV *
1791	pp_restore (pTHX)	2155	coro_waitarray_new (pTHX_ int count)
1792	{	2156	{
1793	int i;	2157	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794	SV **SP = PL_stack_base + slf_ax;	2158	AV *av = newAV ();
		2159	SV **ary;
1795		2160
1796	PUSHMARK (SP);	2161	/* unfortunately, building manually saves memory */
		2162	Newx (ary, 2, SV *);
		2163	AvALLOC (av) = ary;
		2164	/*AvARRAY (av) = ary;*/
		2165	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2166	AvMAX (av) = 1;
		2167	AvFILLp (av) = 0;
		2168	ary [0] = newSViv (count);
1797		2169
1798	EXTEND (SP, slf_argc + 1);	2170	return newRV_noinc ((SV *)av);
1799
1800	for (i = 0; i < slf_argc; ++i)
1801	PUSHs (sv_2mortal (slf_argv [i]));
1802
1803	PUSHs ((SV *)CvGV (slf_cv));
1804
1805	RETURNOP (slf_restore.op_first);
1806	}	2171	}
1807		2172
1808	static void	2173	/* semaphore */
1809	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810	{
1811	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812	}
1813
1814	static void
1815	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816	{
1817	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819	frame->prepare = slf_prepare_set_stacklevel;
1820	frame->check = slf_check_nop;
1821	frame->data = (void *)SvIV (arg [0]);
1822	}
1823
1824	static void
1825	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826	{
1827	SV **arg = (SV **)slf_frame.data;
1828
1829	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830	}
1831
1832	static void
1833	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834	{
1835	if (items != 2)
1836	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838	frame->prepare = slf_prepare_transfer;
1839	frame->check = slf_check_nop;
1840	frame->data = (void *)arg; /* let's hope it will stay valid */
1841	}
1842
1843	static void
1844	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845	{
1846	frame->prepare = prepare_schedule;
1847	frame->check = slf_check_nop;
1848	}
1849
1850	static void
1851	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852	{
1853	frame->prepare = prepare_cede;
1854	frame->check = slf_check_nop;
1855	}
1856
1857	static void
1858	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859	{
1860	frame->prepare = prepare_cede_notself;
1861	frame->check = slf_check_nop;
1862	}
1863
1864	/* we hijack an hopefully unused CV flag for our purposes */
1865	#define CVf_SLF 0x4000
1866
1867	/*
1868	* these not obviously related functions are all rolled into one
1869	* function to increase chances that they all will call transfer with the same
1870	* stack offset
1871	* SLF stands for "schedule-like-function".
1872	*/
1873	static OP *
1874	pp_slf (pTHX)
1875	{
1876	I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878	/* set up the slf frame, unless it has already been set-up */
1879	/* the latter happens when a new coro has been started */
1880	/* or when a new cctx was attached to an existing coroutine */
1881	if (expect_true (!slf_frame.prepare))
1882	{
1883	/* first iteration */
1884	dSP;
1885	SV **arg = PL_stack_base + TOPMARK + 1;
1886	int items = SP - arg; /* args without function object */
1887	SV *gv = *sp;
1888
1889	/* do a quick consistency check on the "function" object, and if it isn't */
1890	/* for us, divert to the real entersub */
1891	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892	return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894	if (!(PL_op->op_flags & OPf_STACKED))
1895	{
1896	/* ampersand-form of call, use @_ instead of stack */
1897	AV *av = GvAV (PL_defgv);
1898	arg = AvARRAY (av);
1899	items = AvFILLp (av) + 1;
1900	}
1901
1902	/* now call the init function, which needs to set up slf_frame */
1903	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904	(aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906	/* pop args */
1907	SP = PL_stack_base + POPMARK;
1908
1909	PUTBACK;
1910	}
1911
1912	/* now that we have a slf_frame, interpret it! */
1913	/* we use a callback system not to make the code needlessly */
1914	/* complicated, but so we can run multiple perl coros from one cctx */
1915
1916	do
1917	{
1918	struct coro_transfer_args ta;
1919
1920	slf_frame.prepare (aTHX_ &ta);
1921	TRANSFER (ta, 0);
1922
1923	checkmark = PL_stack_sp - PL_stack_base;
1924	}
1925	while (slf_frame.check (aTHX_ &slf_frame));
1926
1927	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929	/* return value handling - mostly like entersub */
1930	{
1931	dSP;
1932	SV **bot = PL_stack_base + checkmark;
1933	int gimme = GIMME_V;
1934
1935	/* make sure we put something on the stack in scalar context */
1936	if (gimme == G_SCALAR)
1937	{
1938	if (sp == bot)
1939	XPUSHs (&PL_sv_undef);
1940
1941	SP = bot + 1;
1942	}
1943
1944	PUTBACK;
1945	}
1946
1947	/* exception handling */
1948	if (expect_false (coro_throw))
1949	{
1950	SV *exception = sv_2mortal (coro_throw);
1951
1952	coro_throw = 0;
1953	sv_setsv (ERRSV, exception);
1954	croak (0);
1955	}
1956
1957	return NORMAL;
1958	}
1959
1960	static void
1961	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962	{
1963	int i;
1964	SV **arg = PL_stack_base + ax;
1965	int items = PL_stack_sp - arg + 1;
1966
1967	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970	&& PL_op->op_ppaddr != pp_slf)
1971	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973	CvFLAGS (cv) |= CVf_SLF;
1974	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975	slf_cv = cv;
1976
1977	/* we patch the op, and then re-run the whole call */
1978	/* we have to put the same argument on the stack for this to work */
1979	/* and this will be done by pp_restore */
1980	slf_restore.op_next = (OP *)&slf_restore;
1981	slf_restore.op_type = OP_CUSTOM;
1982	slf_restore.op_ppaddr = pp_restore;
1983	slf_restore.op_first = PL_op;
1984
1985	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987	if (PL_op->op_flags & OPf_STACKED)
1988	{
1989	if (items > slf_arga)
1990	{
1991	slf_arga = items;
1992	free (slf_argv);
1993	slf_argv = malloc (slf_arga * sizeof (SV *));
1994	}
1995
1996	slf_argc = items;
1997
1998	for (i = 0; i < items; ++i)
1999	slf_argv [i] = SvREFCNT_inc (arg [i]);
2000	}
2001	else
2002	slf_argc = 0;
2003
2004	PL_op->op_ppaddr = pp_slf;
2005	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2006
2007	PL_op = (OP *)&slf_restore;
2008	}
2009
2010	/*****************************************************************************/
2011		2174
2012	static void	2175	static void
2013	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2176	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2014	{	2177	{
2015	SV *count_sv = AvARRAY (av)[0];	2178	SV *count_sv = AvARRAY (av)[0];
…		…
2027	AvARRAY (av)[0] = AvARRAY (av)[1];	2190	AvARRAY (av)[0] = AvARRAY (av)[1];
2028	AvARRAY (av)[1] = count_sv;	2191	AvARRAY (av)[1] = count_sv;
2029	cb = av_shift (av);	2192	cb = av_shift (av);
2030		2193
2031	if (SvOBJECT (cb))	2194	if (SvOBJECT (cb))
		2195	{
2032	api_ready (aTHX_ cb);	2196	api_ready (aTHX_ cb);
2033	else	2197	--count;
2034	croak ("callbacks not yet supported");	2198	}
		2199	else if (SvTYPE (cb) == SVt_PVCV)
		2200	{
		2201	dSP;
		2202	PUSHMARK (SP);
		2203	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2204	PUTBACK;
		2205	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2206	}
2035		2207
2036	SvREFCNT_dec (cb);	2208	SvREFCNT_dec (cb);
2037
2038	--count;
2039	}	2209	}
2040	}	2210	}
2041		2211
2042	static void	2212	static void
2043	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2213	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
…		…
2045	/* call $sem->adjust (0) to possibly wake up some other waiters */	2215	/* call $sem->adjust (0) to possibly wake up some other waiters */
2046	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2216	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2047	}	2217	}
2048		2218
2049	static int	2219	static int
2050	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2220	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2051	{	2221	{
2052	AV *av = (AV *)frame->data;	2222	AV *av = (AV *)frame->data;
2053	SV *count_sv = AvARRAY (av)[0];	2223	SV *count_sv = AvARRAY (av)[0];
2054		2224
		2225	/* if we are about to throw, don't actually acquire the lock, just throw */
		2226	if (CORO_THROW)
		2227	return 0;
2055	if (SvIVX (count_sv) > 0)	2228	else if (SvIVX (count_sv) > 0)
2056	{	2229	{
2057	SvSTATE_current->on_destroy = 0;	2230	SvSTATE_current->on_destroy = 0;
		2231
		2232	if (acquire)
2058	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2233	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2234	else
		2235	coro_semaphore_adjust (aTHX_ av, 0);
		2236
2059	return 0;	2237	return 0;
2060	}	2238	}
2061	else	2239	else
2062	{	2240	{
2063	int i;	2241	int i;
…		…
2072	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2250	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2073	return 1;	2251	return 1;
2074	}	2252	}
2075	}	2253	}
2076		2254
2077	static void	2255	static int
		2256	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2257	{
		2258	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2259	}
		2260
		2261	static int
		2262	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2263	{
		2264	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2265	}
		2266
		2267	static void
2078	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2268	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2079	{	2269	{
2080	AV *av = (AV *)SvRV (arg [0]);	2270	AV *av = (AV *)SvRV (arg [0]);
2081		2271
2082	if (SvIVX (AvARRAY (av)[0]) > 0)	2272	if (SvIVX (AvARRAY (av)[0]) > 0)
2083	{	2273	{
2084	frame->data = (void *)av;	2274	frame->data = (void *)av;
2085	frame->prepare = prepare_nop;	2275	frame->prepare = prepare_nop;
2086	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087	}	2276	}
2088	else	2277	else
2089	{	2278	{
2090	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2279	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2091		2280
2092	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2281	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2093	frame->prepare = prepare_schedule;	2282	frame->prepare = prepare_schedule;
2094		2283
2095	/* to avoid race conditions when a woken-up coro gets terminated */	2284	/* to avoid race conditions when a woken-up coro gets terminated */
2096	/* we arrange for a temporary on_destroy that calls adjust (0) */	2285	/* we arrange for a temporary on_destroy that calls adjust (0) */
2097	assert (!SvSTATE_current->on_destroy);//D
2098	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2286	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2099	}	2287	}
		2288	}
2100		2289
		2290	static void
		2291	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2292	{
		2293	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2101	frame->check = slf_check_semaphore_down;	2294	frame->check = slf_check_semaphore_down;
		2295	}
2102		2296
		2297	static void
		2298	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2299	{
		2300	if (items >= 2)
		2301	{
		2302	/* callback form */
		2303	AV *av = (AV *)SvRV (arg [0]);
		2304	CV *cb_cv = coro_sv_2cv (arg [1]);
		2305
		2306	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
		2307
		2308	if (SvIVX (AvARRAY (av)[0]) > 0)
		2309	coro_semaphore_adjust (aTHX_ av, 0);
		2310
		2311	frame->prepare = prepare_nop;
		2312	frame->check = slf_check_nop;
		2313	}
		2314	else
		2315	{
		2316	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2317	frame->check = slf_check_semaphore_wait;
		2318	}
		2319	}
		2320
		2321	/* signal */
		2322
		2323	static void
		2324	coro_signal_wake (pTHX_ AV *av, int count)
		2325	{
		2326	SvIVX (AvARRAY (av)[0]) = 0;
		2327
		2328	/* now signal count waiters */
		2329	while (count > 0 && AvFILLp (av) > 0)
		2330	{
		2331	SV *cb;
		2332
		2333	/* swap first two elements so we can shift a waiter */
		2334	cb = AvARRAY (av)[0];
		2335	AvARRAY (av)[0] = AvARRAY (av)[1];
		2336	AvARRAY (av)[1] = cb;
		2337
		2338	cb = av_shift (av);
		2339
		2340	api_ready (aTHX_ cb);
		2341	sv_setiv (cb, 0); /* signal waiter */
		2342	SvREFCNT_dec (cb);
		2343
		2344	--count;
		2345	}
		2346	}
		2347
		2348	static int
		2349	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2350	{
		2351	/* if we are about to throw, also stop waiting */
		2352	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2353	}
		2354
		2355	static void
		2356	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2357	{
		2358	AV *av = (AV *)SvRV (arg [0]);
		2359
		2360	if (SvIVX (AvARRAY (av)[0]))
		2361	{
		2362	SvIVX (AvARRAY (av)[0]) = 0;
		2363	frame->prepare = prepare_nop;
		2364	frame->check = slf_check_nop;
		2365	}
		2366	else
		2367	{
		2368	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2369
		2370	av_push (av, waiter);
		2371
		2372	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2373	frame->prepare = prepare_schedule;
		2374	frame->check = slf_check_signal_wait;
		2375	}
2103	}	2376	}
2104		2377
2105	/*****************************************************************************/	2378	/*****************************************************************************/
		2379	/* Coro::AIO */
2106		2380
2107	#define GENSUB_ARG CvXSUBANY (cv).any_ptr	2381	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2108		2382
2109	/* create a closure from XS, returns a code reference */	2383	/* helper storage struct */
2110	/* the arg can be accessed via GENSUB_ARG from the callback */	2384	struct io_state
2111	/* the callback must use dXSARGS/XSRETURN */
2112	static SV *
2113	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2114	{	2385	{
2115	CV *cv = (CV *)NEWSV (0, 0);	2386	int errorno;
		2387	I32 laststype; /* U16 in 5.10.0 */
		2388	int laststatval;
		2389	Stat_t statcache;
		2390	};
2116		2391
		2392	static void
		2393	coro_aio_callback (pTHX_ CV *cv)
		2394	{
		2395	dXSARGS;
		2396	AV *state = (AV *)GENSUB_ARG;
		2397	SV *coro = av_pop (state);
		2398	SV *data_sv = newSV (sizeof (struct io_state));
		2399
		2400	av_extend (state, items);
		2401
2117	sv_upgrade ((SV *)cv, SVt_PVCV);	2402	sv_upgrade (data_sv, SVt_PV);
		2403	SvCUR_set (data_sv, sizeof (struct io_state));
		2404	SvPOK_only (data_sv);
2118		2405
2119	CvANON_on (cv);	2406	{
2120	CvISXSUB_on (cv);	2407	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2121	CvXSUB (cv) = xsub;
2122	GENSUB_ARG = arg;
2123		2408
2124	return newRV_noinc ((SV *)cv);	2409	data->errorno = errno;
		2410	data->laststype = PL_laststype;
		2411	data->laststatval = PL_laststatval;
		2412	data->statcache = PL_statcache;
		2413	}
		2414
		2415	/* now build the result vector out of all the parameters and the data_sv */
		2416	{
		2417	int i;
		2418
		2419	for (i = 0; i < items; ++i)
		2420	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2421	}
		2422
		2423	av_push (state, data_sv);
		2424
		2425	api_ready (aTHX_ coro);
		2426	SvREFCNT_dec (coro);
		2427	SvREFCNT_dec ((AV *)state);
		2428	}
		2429
		2430	static int
		2431	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2432	{
		2433	AV *state = (AV *)frame->data;
		2434
		2435	/* if we are about to throw, return early */
		2436	/* this does not cancel the aio request, but at least */
		2437	/* it quickly returns */
		2438	if (CORO_THROW)
		2439	return 0;
		2440
		2441	/* one element that is an RV? repeat! */
		2442	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2443	return 1;
		2444
		2445	/* restore status */
		2446	{
		2447	SV *data_sv = av_pop (state);
		2448	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2449
		2450	errno = data->errorno;
		2451	PL_laststype = data->laststype;
		2452	PL_laststatval = data->laststatval;
		2453	PL_statcache = data->statcache;
		2454
		2455	SvREFCNT_dec (data_sv);
		2456	}
		2457
		2458	/* push result values */
		2459	{
		2460	dSP;
		2461	int i;
		2462
		2463	EXTEND (SP, AvFILLp (state) + 1);
		2464	for (i = 0; i <= AvFILLp (state); ++i)
		2465	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2466
		2467	PUTBACK;
		2468	}
		2469
		2470	return 0;
		2471	}
		2472
		2473	static void
		2474	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2475	{
		2476	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2477	SV *coro_hv = SvRV (coro_current);
		2478	struct coro *coro = SvSTATE_hv (coro_hv);
		2479
		2480	/* put our coroutine id on the state arg */
		2481	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2482
		2483	/* first see whether we have a non-zero priority and set it as AIO prio */
		2484	if (coro->prio)
		2485	{
		2486	dSP;
		2487
		2488	static SV *prio_cv;
		2489	static SV *prio_sv;
		2490
		2491	if (expect_false (!prio_cv))
		2492	{
		2493	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2494	prio_sv = newSViv (0);
		2495	}
		2496
		2497	PUSHMARK (SP);
		2498	sv_setiv (prio_sv, coro->prio);
		2499	XPUSHs (prio_sv);
		2500
		2501	PUTBACK;
		2502	call_sv (prio_cv, G_VOID | G_DISCARD);
		2503	}
		2504
		2505	/* now call the original request */
		2506	{
		2507	dSP;
		2508	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2509	int i;
		2510
		2511	PUSHMARK (SP);
		2512
		2513	/* first push all args to the stack */
		2514	EXTEND (SP, items + 1);
		2515
		2516	for (i = 0; i < items; ++i)
		2517	PUSHs (arg [i]);
		2518
		2519	/* now push the callback closure */
		2520	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2521
		2522	/* now call the AIO function - we assume our request is uncancelable */
		2523	PUTBACK;
		2524	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2525	}
		2526
		2527	/* now that the requets is going, we loop toll we have a result */
		2528	frame->data = (void *)state;
		2529	frame->prepare = prepare_schedule;
		2530	frame->check = slf_check_aio_req;
		2531	}
		2532
		2533	static void
		2534	coro_aio_req_xs (pTHX_ CV *cv)
		2535	{
		2536	dXSARGS;
		2537
		2538	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2539
		2540	XSRETURN_EMPTY;
2125	}	2541	}
2126		2542
2127	/*****************************************************************************/	2543	/*****************************************************************************/
2128		2544
2129	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2545	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
…		…
2199	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2615	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2200	}	2616	}
2201		2617
2202	SV *	2618	SV *
2203	new (char *klass, ...)	2619	new (char *klass, ...)
		2620	ALIAS:
		2621	Coro::new = 1
2204	CODE:	2622	CODE:
2205	{	2623	{
2206	struct coro *coro;	2624	struct coro *coro;
2207	MAGIC *mg;	2625	MAGIC *mg;
2208	HV *hv;	2626	HV *hv;
		2627	CV *cb;
2209	int i;	2628	int i;
		2629
		2630	if (items > 1)
		2631	{
		2632	cb = coro_sv_2cv (ST (1));
		2633
		2634	if (!ix)
		2635	{
		2636	if (CvISXSUB (cb))
		2637	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2638
		2639	if (!CvROOT (cb))
		2640	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2641	}
		2642	}
2210		2643
2211	Newz (0, coro, 1, struct coro);	2644	Newz (0, coro, 1, struct coro);
2212	coro->args = newAV ();	2645	coro->args = newAV ();
2213	coro->flags = CF_NEW;	2646	coro->flags = CF_NEW;
2214		2647
…		…
2219	coro->hv = hv = newHV ();	2652	coro->hv = hv = newHV ();
2220	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2653	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2221	mg->mg_flags |= MGf_DUP;	2654	mg->mg_flags |= MGf_DUP;
2222	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2655	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2223		2656
		2657	if (items > 1)
		2658	{
2224	av_extend (coro->args, items - 1);	2659	av_extend (coro->args, items - 1 + ix);
		2660
		2661	if (ix)
		2662	{
		2663	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2664	cb = cv_coro_run;
		2665	}
		2666
		2667	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2668
2225	for (i = 1; i < items; i++)	2669	for (i = 2; i < items; i++)
2226	av_push (coro->args, newSVsv (ST (i)));	2670	av_push (coro->args, newSVsv (ST (i)));
		2671	}
2227	}	2672	}
2228	OUTPUT:	2673	OUTPUT:
2229	RETVAL	2674	RETVAL
2230
2231	void
2232	_set_stacklevel (...)
2233	CODE:
2234	CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2235		2675
2236	void	2676	void
2237	transfer (...)	2677	transfer (...)
2238	PROTOTYPE: $$	2678	PROTOTYPE: $$
2239	CODE:	2679	CODE:
…		…
2365	throw (Coro::State self, SV *throw = &PL_sv_undef)	2805	throw (Coro::State self, SV *throw = &PL_sv_undef)
2366	PROTOTYPE: $;$	2806	PROTOTYPE: $;$
2367	CODE:	2807	CODE:
2368	{	2808	{
2369	struct coro *current = SvSTATE_current;	2809	struct coro *current = SvSTATE_current;
2370	SV **throwp = self == current ? &coro_throw : &self->throw;	2810	SV **throwp = self == current ? &CORO_THROW : &self->except;
2371	SvREFCNT_dec (*throwp);	2811	SvREFCNT_dec (*throwp);
2372	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	2812	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
2373	}	2813	}
2374		2814
2375	void	2815	void
…		…
2427	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2867	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2428		2868
2429	SV *tmp = *src; *src = *dst; *dst = tmp;	2869	SV *tmp = *src; *src = *dst; *dst = tmp;
2430	}	2870	}
2431		2871
		2872
2432	MODULE = Coro::State PACKAGE = Coro	2873	MODULE = Coro::State PACKAGE = Coro
2433		2874
2434	BOOT:	2875	BOOT:
2435	{	2876	{
2436	int i;	2877	int i;
2437		2878
2438	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	2879	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2439	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2880	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2440	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2881	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2441		2882	cv_coro_run = get_cv (aTHX_ "Coro::_terminate", GV_ADD);
2442	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2883	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2443	SvREADONLY_on (coro_current);	2884	SvREADONLY_on (coro_current);
2444		2885
2445	coro_stash = gv_stashpv ("Coro", TRUE);	2886	coro_stash = gv_stashpv ("Coro", TRUE);
2446		2887
2447	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2888	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
2463	coroapi.ready = api_ready;	2904	coroapi.ready = api_ready;
2464	coroapi.is_ready = api_is_ready;	2905	coroapi.is_ready = api_is_ready;
2465	coroapi.nready = coro_nready;	2906	coroapi.nready = coro_nready;
2466	coroapi.current = coro_current;	2907	coroapi.current = coro_current;
2467		2908
2468	GCoroAPI = &coroapi;	2909	/*GCoroAPI = &coroapi;*/
2469	sv_setiv (sv, (IV)&coroapi);	2910	sv_setiv (sv, (IV)&coroapi);
2470	SvREADONLY_on (sv);	2911	SvREADONLY_on (sv);
2471	}	2912	}
2472	}	2913	}
2473		2914
…		…
2609	api_trace (aTHX_ coro_current, 0);	3050	api_trace (aTHX_ coro_current, 0);
2610		3051
2611	av_push (av_async_pool, newSVsv (coro_current));	3052	av_push (av_async_pool, newSVsv (coro_current));
2612	}	3053	}
2613		3054
2614		3055	SV *
2615	MODULE = Coro::State PACKAGE = Coro::AIO	3056	rouse_cb ()
		3057	PROTOTYPE:
		3058	CODE:
		3059	RETVAL = coro_new_rouse_cb (aTHX);
		3060	OUTPUT:
		3061	RETVAL
2616		3062
2617	void	3063	void
2618	_get_state (SV *self)	3064	rouse_wait (...)
2619	PROTOTYPE: $	3065	PROTOTYPE: ;$
2620	PPCODE:	3066	PPCODE:
2621	{	3067	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2622	AV *defav = GvAV (PL_defgv);
2623	AV *av = newAV ();
2624	int i;
2625	SV *data_sv = newSV (sizeof (struct io_state));
2626	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627	SvCUR_set (data_sv, sizeof (struct io_state));
2628	SvPOK_only (data_sv);
2629
2630	data->errorno = errno;
2631	data->laststype = PL_laststype;
2632	data->laststatval = PL_laststatval;
2633	data->statcache = PL_statcache;
2634
2635	av_extend (av, AvFILLp (defav) + 1 + 1);
2636
2637	for (i = 0; i <= AvFILLp (defav); ++i)
2638	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2639
2640	av_push (av, data_sv);
2641
2642	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2643
2644	api_ready (aTHX_ self);
2645	}
2646
2647	void
2648	_set_state (SV *state)
2649	PROTOTYPE: $
2650	PPCODE:
2651	{
2652	AV *av = (AV *)SvRV (state);
2653	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2654	int i;
2655
2656	errno = data->errorno;
2657	PL_laststype = data->laststype;
2658	PL_laststatval = data->laststatval;
2659	PL_statcache = data->statcache;
2660
2661	EXTEND (SP, AvFILLp (av));
2662	for (i = 0; i < AvFILLp (av); ++i)
2663	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2664	}
2665
2666
2667	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2668
2669	BOOT:
2670	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2671
2672	void
2673	_schedule (...)
2674	CODE:
2675	{
2676	static int incede;
2677
2678	api_cede_notself (aTHX);
2679
2680	++incede;
2681	while (coro_nready >= incede && api_cede (aTHX))
2682	;
2683
2684	sv_setsv (sv_activity, &PL_sv_undef);
2685	if (coro_nready >= incede)
2686	{
2687	PUSHMARK (SP);
2688	PUTBACK;
2689	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2690	SPAGAIN;
2691	}
2692
2693	--incede;
2694	}
2695		3068
2696		3069
2697	MODULE = Coro::State PACKAGE = PerlIO::cede	3070	MODULE = Coro::State PACKAGE = PerlIO::cede
2698		3071
2699	BOOT:	3072	BOOT:
2700	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3073	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2701		3074
		3075
2702	MODULE = Coro::State PACKAGE = Coro::Semaphore	3076	MODULE = Coro::State PACKAGE = Coro::Semaphore
2703		3077
2704	SV *	3078	SV *
2705	new (SV *klass, SV *count_ = 0)	3079	new (SV *klass, SV *count = 0)
2706	CODE:	3080	CODE:
2707	{	3081	RETVAL = sv_bless (
2708	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3082	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2709	AV *av = newAV ();	3083	GvSTASH (CvGV (cv))
2710	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	3084	);
2711	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	3085	OUTPUT:
2712	}	3086	RETVAL
		3087
		3088	# helper for Coro::Channel
		3089	SV *
		3090	_alloc (int count)
		3091	CODE:
		3092	RETVAL = coro_waitarray_new (aTHX_ count);
2713	OUTPUT:	3093	OUTPUT:
2714	RETVAL	3094	RETVAL
2715		3095
2716	SV *	3096	SV *
2717	count (SV *self)	3097	count (SV *self)
…		…
2726	adjust = 1	3106	adjust = 1
2727	CODE:	3107	CODE:
2728	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3108	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2729		3109
2730	void	3110	void
2731	down (SV *self)	3111	down (...)
2732	CODE:	3112	CODE:
2733	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);	3113	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3114
		3115	void
		3116	wait (...)
		3117	CODE:
		3118	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734		3119
2735	void	3120	void
2736	try (SV *self)	3121	try (SV *self)
2737	PPCODE:	3122	PPCODE:
2738	{	3123	{
…		…
2750	XSRETURN_NO;	3135	XSRETURN_NO;
2751	}	3136	}
2752		3137
2753	void	3138	void
2754	waiters (SV *self)	3139	waiters (SV *self)
2755	CODE:	3140	PPCODE:
2756	{	3141	{
2757	AV *av = (AV *)SvRV (self);	3142	AV *av = (AV *)SvRV (self);
		3143	int wcount = AvFILLp (av) + 1 - 1;
2758		3144
2759	if (GIMME_V == G_SCALAR)	3145	if (GIMME_V == G_SCALAR)
2760	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3146	XPUSHs (sv_2mortal (newSViv (wcount)));
2761	else	3147	else
2762	{	3148	{
2763	int i;	3149	int i;
2764	EXTEND (SP, AvFILLp (av) + 1 - 1);	3150	EXTEND (SP, wcount);
2765	for (i = 1; i <= AvFILLp (av); ++i)	3151	for (i = 1; i <= wcount; ++i)
2766	PUSHs (newSVsv (AvARRAY (av)[i]));	3152	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767	}	3153	}
2768	}	3154	}
2769		3155
		3156	MODULE = Coro::State PACKAGE = Coro::Signal
		3157
		3158	SV *
		3159	new (SV *klass)
		3160	CODE:
		3161	RETVAL = sv_bless (
		3162	coro_waitarray_new (aTHX_ 0),
		3163	GvSTASH (CvGV (cv))
		3164	);
		3165	OUTPUT:
		3166	RETVAL
		3167
		3168	void
		3169	wait (...)
		3170	CODE:
		3171	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3172
		3173	void
		3174	broadcast (SV *self)
		3175	CODE:
		3176	{
		3177	AV *av = (AV *)SvRV (self);
		3178	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3179	}
		3180
		3181	void
		3182	send (SV *self)
		3183	CODE:
		3184	{
		3185	AV *av = (AV *)SvRV (self);
		3186
		3187	if (AvFILLp (av))
		3188	coro_signal_wake (aTHX_ av, 1);
		3189	else
		3190	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3191	}
		3192
		3193	IV
		3194	awaited (SV *self)
		3195	CODE:
		3196	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3197	OUTPUT:
		3198	RETVAL
		3199
		3200
		3201	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		3202
		3203	BOOT:
		3204	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		3205
		3206	void
		3207	_schedule (...)
		3208	CODE:
		3209	{
		3210	static int incede;
		3211
		3212	api_cede_notself (aTHX);
		3213
		3214	++incede;
		3215	while (coro_nready >= incede && api_cede (aTHX))
		3216	;
		3217
		3218	sv_setsv (sv_activity, &PL_sv_undef);
		3219	if (coro_nready >= incede)
		3220	{
		3221	PUSHMARK (SP);
		3222	PUTBACK;
		3223	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		3224	}
		3225
		3226	--incede;
		3227	}
		3228
		3229
		3230	MODULE = Coro::State PACKAGE = Coro::AIO
		3231
		3232	void
		3233	_register (char *target, char *proto, SV *req)
		3234	CODE:
		3235	{
		3236	CV *req_cv = coro_sv_2cv (req);
		3237	/* newXSproto doesn't return the CV on 5.8 */
		3238	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3239	sv_setpv ((SV *)slf_cv, proto);
		3240	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3241	}
		3242

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