[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.299 by root, Wed Nov 19 00:06:55 2008 UTC

…		…
46	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
47	#endif	47	#endif
48		48
49	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
50	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
51	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52	#else
53	# define REGISTER_STACK(cctx,start,end)
54	#endif	51	#endif
55		52
56	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
57	static int cctx_max_idle = 4;	54	static int cctx_max_idle = 4;
58		55
…		…
98	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
99	#endif	96	#endif
100	#ifndef newSV	97	#ifndef newSV
101	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
102	#endif	99	#endif
		100	#ifndef CvISXSUB_on
		101	# define CvISXSUB_on(cv) (void)cv
		102	#endif
103		103
104	/* 5.8.7 */	104	/* 5.8.7 */
105	#ifndef SvRV_set	105	#ifndef SvRV_set
106	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
107	#endif	107	#endif
…		…
119	# define CORO_PREFER_PERL_FUNCTIONS 0	119	# define CORO_PREFER_PERL_FUNCTIONS 0
120	#endif	120	#endif
121		121
122	/* 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
123	* portable way as possible. */	123	* portable way as possible. */
		124	#if __GNUC__ >= 4
		125	# define dSTACKLEVEL int stacklevel_dummy
		126	# define STACKLEVEL __builtin_frame_address (0)
		127	#else
124	#define dSTACKLEVEL volatile char stacklevel	128	# define dSTACKLEVEL volatile void *stacklevel
125	#define STACKLEVEL ((void *)&stacklevel)	129	# define STACKLEVEL ((void *)&stacklevel)
		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
130	# define attribute(x) __attribute__(x)	135	# define attribute(x) __attribute__(x)
131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132	# define expect(expr,value) __builtin_expect ((expr),(value))	136	# define expect(expr,value) __builtin_expect ((expr),(value))
		137	# define INLINE static inline
133	#else	138	#else
134	# define attribute(x)	139	# define attribute(x)
135	# define BARRIER
136	# define expect(expr,value) (expr)	140	# define expect(expr,value) (expr)
		141	# define INLINE static
137	#endif	142	#endif
138		143
139	#define expect_false(expr) expect ((expr) != 0, 0)	144	#define expect_false(expr) expect ((expr) != 0, 0)
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 char next_has_throw; /* speedup flag for next->throw check */
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;
…		…
210	CC_TRACE_LINE = 0x10, /* trace each statement */	194	CC_TRACE_LINE = 0x10, /* trace each statement */
211	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	195	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
212	};	196	};
213		197
214	/* this is a structure representing a c-level coroutine */	198	/* this is a structure representing a c-level coroutine */
215	typedef struct coro_cctx {	199	typedef struct coro_cctx
		200	{
216	struct coro_cctx *next;	201	struct coro_cctx *next;
217		202
218	/* the stack */	203	/* the stack */
219	void *sptr;	204	void *sptr;
220	size_t ssize;	205	size_t ssize;
…		…
238	CF_NEW = 0x0004, /* has never been switched to */	223	CF_NEW = 0x0004, /* has never been switched to */
239	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
240	};	225	};
241		226
242	/* the structure where most of the perl state is stored, overlaid on the cxstack */	227	/* the structure where most of the perl state is stored, overlaid on the cxstack */
243	typedef struct {	228	typedef struct
		229	{
244	SV *defsv;	230	SV *defsv;
245	AV *defav;	231	AV *defav;
246	SV *errsv;	232	SV *errsv;
247	SV *irsgv;	233	SV *irsgv;
248	#define VAR(name,type) type name;	234	#define VAR(name,type) type name;
…		…
252		238
253	#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))
254		240
255	/* this is a structure representing a perl-level coroutine */	241	/* this is a structure representing a perl-level coroutine */
256	struct coro {	242	struct coro {
257	/* the c coroutine allocated to this perl coroutine, if any */	243	/* the C coroutine allocated to this perl coroutine, if any */
258	coro_cctx *cctx;	244	coro_cctx *cctx;
259		245
260	/* process data */	246	/* state data */
		247	struct CoroSLF slf_frame; /* saved slf frame */
261	AV *mainstack;	248	AV *mainstack;
262	perl_slots slot; / basically the saved sp */	249	perl_slots slot; / basically the saved sp */
263		250
264	AV args; / data associated with this coroutine (initial args) */	251	AV args; / data associated with this coroutine (initial args) */
265	int refcnt; /* coroutines are refcounted, yes */	252	int refcnt; /* coroutines are refcounted, yes */
266	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
267	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);
268		256
269	/* statistics */	257	/* statistics */
270	int usecount; /* number of transfers to this coro */	258	int usecount; /* number of transfers to this coro */
271		259
272	/* coro process data */	260	/* coro process data */
273	int prio;	261	int prio;
274	SV throw; / exception to be thrown */	262	SV except; / exception to be thrown */
275		263
276	/* async_pool */	264	/* async_pool */
277	SV *saved_deffh;	265	SV *saved_deffh;
278		266
279	/* linked list */	267	/* linked list */
280	struct coro next, prev;	268	struct coro next, prev;
281	};	269	};
282		270
283	typedef struct coro *Coro__State;	271	typedef struct coro *Coro__State;
284	typedef struct coro *Coro__State_or_hashref;	272	typedef struct coro *Coro__State_or_hashref;
		273
		274	/* the following variables are effectively part of the perl context */
		275	/* and get copied between struct coro and these variables */
		276	/* the mainr easonw e don't support windows process emulation */
		277	static struct CoroSLF slf_frame; /* the current slf frame */
285		278
286	/ Coro ******************************************************************/	279	/ Coro ******************************************************************/
287		280
288	#define PRIO_MAX 3	281	#define PRIO_MAX 3
289	#define PRIO_HIGH 1	282	#define PRIO_HIGH 1
…		…
294		287
295	/* for Coro.pm */	288	/* for Coro.pm */
296	static SV *coro_current;	289	static SV *coro_current;
297	static SV *coro_readyhook;	290	static SV *coro_readyhook;
298	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	291	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
299	static int coro_nready;
300	static struct coro *coro_first;	292	static struct coro *coro_first;
		293	#define coro_nready coroapi.nready
301		294
302	/ lowlevel stuff ********************************************************/	295	/ lowlevel stuff ********************************************************/
303		296
304	static SV *	297	static SV *
305	coro_get_sv (pTHX_ const char *name, int create)	298	coro_get_sv (pTHX_ const char *name, int create)
…		…
390	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	383	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
391		384
392	return 0;	385	return 0;
393	}	386	}
394		387
395	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	388	#define CORO_MAGIC_type_cv 26
396	#define CORO_MAGIC_type_state PERL_MAGIC_ext	389	#define CORO_MAGIC_type_state PERL_MAGIC_ext
397		390
398	static MGVTBL coro_cv_vtbl = {	391	static MGVTBL coro_cv_vtbl = {
399	0, 0, 0, 0,	392	0, 0, 0, 0,
400	coro_cv_free	393	coro_cv_free
401	};	394	};
402		395
		396	#define CORO_MAGIC_NN(sv, type) \
		397	(expect_true (SvMAGIC (sv)->mg_type == type) \
		398	? SvMAGIC (sv) \
		399	: mg_find (sv, type))
		400
403	#define CORO_MAGIC(sv, type) \	401	#define CORO_MAGIC(sv, type) \
404	SvMAGIC (sv) \	402	(expect_true (SvMAGIC (sv)) \
405	? SvMAGIC (sv)->mg_type == type \	403	? CORO_MAGIC_NN (sv, type) \
406	? SvMAGIC (sv) \
407	: mg_find (sv, type) \
408	: 0	404	: 0)
409		405
410	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	406	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
411	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	407	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
412		408
413	static struct coro *	409	INLINE struct coro *
414	SvSTATE_ (pTHX_ SV *coro)	410	SvSTATE_ (pTHX_ SV *coro)
415	{	411	{
416	HV *stash;	412	HV *stash;
417	MAGIC *mg;	413	MAGIC *mg;
418		414
…		…
433	mg = CORO_MAGIC_state (coro);	429	mg = CORO_MAGIC_state (coro);
434	return (struct coro *)mg->mg_ptr;	430	return (struct coro *)mg->mg_ptr;
435	}	431	}
436		432
437	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	433	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		434
		435	/* faster than SvSTATE, but expects a coroutine hv */
		436	#define SvSTATE_hv(hv) ((struct coro )CORO_MAGIC_NN ((SV )hv, CORO_MAGIC_type_state)->mg_ptr)
		437	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438		438
439	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
440	static void	440	static void
441	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
442	{	442	{
…		…
509	CvPADLIST (cv) = (AV *)POPs;	509	CvPADLIST (cv) = (AV *)POPs;
510	}	510	}
511		511
512	PUTBACK;	512	PUTBACK;
513	}	513	}
		514
		515	slf_frame = c->slf_frame;
		516	CORO_THROW = c->except;
514	}	517	}
515		518
516	static void	519	static void
517	save_perl (pTHX_ Coro__State c)	520	save_perl (pTHX_ Coro__State c)
518	{	521	{
		522	c->except = CORO_THROW;
		523	c->slf_frame = slf_frame;
		524
519	{	525	{
520	dSP;	526	dSP;
521	I32 cxix = cxstack_ix;	527	I32 cxix = cxstack_ix;
522	PERL_CONTEXT *ccstk = cxstack;	528	PERL_CONTEXT *ccstk = cxstack;
523	PERL_SI *top_si = PL_curstackinfo;	529	PERL_SI *top_si = PL_curstackinfo;
…		…
590	#undef VAR	596	#undef VAR
591	}	597	}
592	}	598	}
593		599
594	/*	600	/*
595	* allocate various perl stacks. This is an exact copy	601	* allocate various perl stacks. This is almost an exact copy
596	* of perl.c:init_stacks, except that it uses less memory	602	* of perl.c:init_stacks, except that it uses less memory
597	* on the (sometimes correct) assumption that coroutines do	603	* on the (sometimes correct) assumption that coroutines do
598	* not usually need a lot of stackspace.	604	* not usually need a lot of stackspace.
599	*/	605	*/
600	#if CORO_PREFER_PERL_FUNCTIONS	606	#if CORO_PREFER_PERL_FUNCTIONS
…		…
802		808
803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	809	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804	}	810	}
805		811
806	static void	812	static void
		813	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		814	{
		815	/* kind of mega-hacky, but works */
		816	ta->next = ta->prev = (struct coro *)ta;
		817	}
		818
		819	static int
		820	slf_check_nop (pTHX_ struct CoroSLF *frame)
		821	{
		822	return 0;
		823	}
		824
		825	static UNOP coro_setup_op;
		826
		827	static void NOINLINE /* noinline to keep it out of the transfer fast path */
807	coro_setup (pTHX_ struct coro *coro)	828	coro_setup (pTHX_ struct coro *coro)
808	{	829	{
809	/*	830	/*
810	* emulate part of the perl startup here.	831	* emulate part of the perl startup here.
811	*/	832	*/
…		…
835	PL_rs = newSVsv (GvSV (irsgv));	856	PL_rs = newSVsv (GvSV (irsgv));
836	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	857	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
837		858
838	{	859	{
839	dSP;	860	dSP;
840	LOGOP myop;	861	UNOP myop;
841		862
842	Zero (&myop, 1, LOGOP);	863	Zero (&myop, 1, UNOP);
843	myop.op_next = Nullop;	864	myop.op_next = Nullop;
844	myop.op_flags = OPf_WANT_VOID;	865	myop.op_flags = OPf_WANT_VOID;
845		866
846	PUSHMARK (SP);	867	PUSHMARK (SP);
847	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
848	PUTBACK;	869	PUTBACK;
…		…
850	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
851	SPAGAIN;	872	SPAGAIN;
852	}	873	}
853		874
854	/* this newly created coroutine might be run on an existing cctx which most	875	/* this newly created coroutine might be run on an existing cctx which most
855	* likely was suspended in set_stacklevel, called from entersub.	876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
856	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
857	* so we ENTER here for symmetry
858	*/	877	*/
859	ENTER;	878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		880
		881	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		882	coro_setup_op.op_next = PL_op;
		883	coro_setup_op.op_type = OP_CUSTOM;
		884	coro_setup_op.op_ppaddr = pp_slf;
		885	/* no flags required, as an init function won't be called */
		886
		887	PL_op = (OP *)&coro_setup_op;
		888
		889	/* copy throw, in case it was set before coro_setup */
		890	CORO_THROW = coro->except;
860	}	891	}
861		892
862	static void	893	static void
863	coro_destruct (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
864	{	895	{
…		…
888		919
889	SvREFCNT_dec (PL_diehook);	920	SvREFCNT_dec (PL_diehook);
890	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
891		922
892	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
893	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (CORO_THROW);
894		925
895	coro_destruct_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
896	}	927	}
897		928
898	static void	929	INLINE void
899	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
900	{	931	{
901	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
902	{	933	{
903	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
908	static int	939	static int
909	runops_trace (pTHX)	940	runops_trace (pTHX)
910	{	941	{
911	COP *oldcop = 0;	942	COP *oldcop = 0;
912	int oldcxix = -2;	943	int oldcxix = -2;
913	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */	944	struct coro coro = SvSTATE_current; / trace cctx is tied to specific coro */
914	coro_cctx *cctx = coro->cctx;	945	coro_cctx *cctx = coro->cctx;
915		946
916	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	947	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
917	{	948	{
918	PERL_ASYNC_CHECK ();	949	PERL_ASYNC_CHECK ();
…		…
1027		1058
1028	TAINT_NOT;	1059	TAINT_NOT;
1029	return 0;	1060	return 0;
1030	}	1061	}
1031		1062
1032	/* inject a fake call to Coro::State::_cctx_init into the execution */	1063	static struct coro_cctx *cctx_ssl_cctx;
1033	/* _cctx_init should be careful, as it could be called at almost any time */	1064	static struct CoroSLF cctx_ssl_frame;
1034	/* during execution of a perl program */	1065
1035	/* also initialises PL_top_env */	1066	static void
		1067	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1068	{
		1069	ta->prev = (struct coro *)cctx_ssl_cctx;
		1070	ta->next = 0;
		1071	}
		1072
		1073	static int
		1074	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
		1075	{
		1076	*frame = cctx_ssl_frame;
		1077
		1078	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1079	}
		1080
		1081	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1036	static void NOINLINE	1082	static void NOINLINE
1037	cctx_prepare (pTHX_ coro_cctx *cctx)	1083	cctx_prepare (pTHX_ coro_cctx *cctx)
1038	{	1084	{
1039	dSP;
1040	LOGOP myop;
1041
1042	PL_top_env = &PL_start_env;	1085	PL_top_env = &PL_start_env;
1043		1086
1044	if (cctx->flags & CC_TRACE)	1087	if (cctx->flags & CC_TRACE)
1045	PL_runops = runops_trace;	1088	PL_runops = runops_trace;
1046		1089
1047	Zero (&myop, 1, LOGOP);	1090	/* we already must be executing an SLF op, there is no other valid way
1048	myop.op_next = PL_op;	1091	* that can lead to creation of a new cctx */
1049	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1092	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1093	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1050		1094
1051	PUSHMARK (SP);	1095	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1052	EXTEND (SP, 2);	1096	cctx_ssl_cctx = cctx;
1053	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1097	cctx_ssl_frame = slf_frame;
1054	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1055	PUTBACK;
1056	PL_op = (OP *)&myop;
1057	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1058	SPAGAIN;
1059	}
1060		1098
		1099	slf_frame.prepare = slf_prepare_set_stacklevel;
		1100	slf_frame.check = slf_check_set_stacklevel;
		1101	}
		1102
1061	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */	1103	/* the tail of transfer: execute stuff we can only do after a transfer */
1062	static void	1104	INLINE void
1063	transfer_tail (void)	1105	transfer_tail (pTHX)
1064	{	1106	{
1065	UNLOCK;	1107	free_coro_mortal (aTHX);
1066
1067	if (expect_false (next_has_throw))
1068	{
1069	struct coro *coro = SvSTATE (coro_current);
1070
1071	if (coro->throw)
1072	{
1073	SV *exception = coro->throw;
1074	coro->throw = 0;
1075	sv_setsv (ERRSV, exception);
1076	croak (0);
1077	}
1078	}
1079	}	1108	}
1080		1109
1081	/*	1110	/*
1082	* this is a _very_ stripped down perl interpreter ;)	1111	* this is a _very_ stripped down perl interpreter ;)
1083	*/	1112	*/
…		…
1090	# endif	1119	# endif
1091	#endif	1120	#endif
1092	{	1121	{
1093	dTHX;	1122	dTHX;
1094		1123
1095	/* we now skip the entersub that lead to transfer () */	1124	/* normally we would need to skip the entersub here */
		1125	/* not doing so will re-execute it, which is exactly what we want */
1096	PL_op = PL_op->op_next;	1126	/* PL_nop = PL_nop->op_next */
1097		1127
1098	/* inject a fake subroutine call to cctx_init */	1128	/* inject a fake subroutine call to cctx_init */
1099	cctx_prepare (aTHX_ (coro_cctx *)arg);	1129	cctx_prepare (aTHX_ (coro_cctx *)arg);
1100		1130
1101	/* cctx_run is the alternative tail of transfer () */	1131	/* cctx_run is the alternative tail of transfer() */
1102	transfer_tail ();	1132	transfer_tail (aTHX);
1103		1133
1104	/* somebody or something will hit me for both perl_run and PL_restartop */	1134	/* somebody or something will hit me for both perl_run and PL_restartop */
1105	PL_restartop = PL_op;	1135	PL_restartop = PL_op;
1106	perl_run (PL_curinterp);	1136	perl_run (PL_curinterp);
1107		1137
…		…
1125	++cctx_count;	1155	++cctx_count;
1126	New (0, cctx, 1, coro_cctx);	1156	New (0, cctx, 1, coro_cctx);
1127		1157
1128	cctx->gen = cctx_gen;	1158	cctx->gen = cctx_gen;
1129	cctx->flags = 0;	1159	cctx->flags = 0;
1130	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */	1160	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1131		1161
1132	return cctx;	1162	return cctx;
1133	}	1163	}
1134		1164
1135	/* create a new cctx only suitable as source */	1165	/* create a new cctx only suitable as source */
…		…
1157	/* mmap supposedly does allocate-on-write for us */	1187	/* mmap supposedly does allocate-on-write for us */
1158	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1188	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
1159		1189
1160	if (cctx->sptr != (void *)-1)	1190	if (cctx->sptr != (void *)-1)
1161	{	1191	{
1162	# if CORO_STACKGUARD	1192	#if CORO_STACKGUARD
1163	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1193	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1164	# endif	1194	#endif
1165	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1195	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1166	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1196	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1167	cctx->flags \|= CC_MAPPED;	1197	cctx->flags \|= CC_MAPPED;
1168	}	1198	}
1169	else	1199	else
1170	#endif	1200	#endif
1171	{	1201	{
1172	cctx->ssize = cctx_stacksize * (long)sizeof (long);	1202	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1173	New (0, cctx->sptr, cctx_stacksize, long);	1203	New (0, cctx->sptr, cctx_stacksize, long);
1174		1204
1175	if (!cctx->sptr)	1205	if (!cctx->sptr)
1176	{	1206	{
1177	perror ("FATAL: unable to allocate stack for coroutine");	1207	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1178	_exit (EXIT_FAILURE);	1208	_exit (EXIT_FAILURE);
1179	}	1209	}
1180		1210
1181	stack_start = cctx->sptr;	1211	stack_start = cctx->sptr;
1182	stack_size = cctx->ssize;	1212	stack_size = cctx->ssize;
1183	}	1213	}
1184		1214
1185	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1215	#if CORO_USE_VALGRIND
		1216	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char )stack_start, (char )stack_start + stack_size);
		1217	#endif
		1218
1186	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1219	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1187		1220
1188	return cctx;	1221	return cctx;
1189	}	1222	}
1190		1223
…		…
1198	coro_destroy (&cctx->cctx);	1231	coro_destroy (&cctx->cctx);
1199		1232
1200	/* coro_transfer creates new, empty cctx's */	1233	/* coro_transfer creates new, empty cctx's */
1201	if (cctx->sptr)	1234	if (cctx->sptr)
1202	{	1235	{
1203	#if CORO_USE_VALGRIND	1236	#if CORO_USE_VALGRIND
1204	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1237	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1205	#endif	1238	#endif
1206		1239
1207	#if HAVE_MMAP	1240	#if HAVE_MMAP
1208	if (cctx->flags & CC_MAPPED)	1241	if (cctx->flags & CC_MAPPED)
1209	munmap (cctx->sptr, cctx->ssize);	1242	munmap (cctx->sptr, cctx->ssize);
1210	else	1243	else
…		…
1237	}	1270	}
1238		1271
1239	static void	1272	static void
1240	cctx_put (coro_cctx *cctx)	1273	cctx_put (coro_cctx *cctx)
1241	{	1274	{
1242	assert (("cctx_put called on non-initialised cctx", cctx->sptr));	1275	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1243		1276
1244	/* free another cctx if overlimit */	1277	/* free another cctx if overlimit */
1245	if (expect_false (cctx_idle >= cctx_max_idle))	1278	if (expect_false (cctx_idle >= cctx_max_idle))
1246	{	1279	{
1247	coro_cctx *first = cctx_first;	1280	coro_cctx *first = cctx_first;
…		…
1259	/ coroutine switching ***************************************************/	1292	/ coroutine switching ***************************************************/
1260		1293
1261	static void	1294	static void
1262	transfer_check (pTHX_ struct coro prev, struct coro next)	1295	transfer_check (pTHX_ struct coro prev, struct coro next)
1263	{	1296	{
		1297	/* TODO: throwing up here is considered harmful */
		1298
1264	if (expect_true (prev != next))	1299	if (expect_true (prev != next))
1265	{	1300	{
1266	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1301	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1267	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1302	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1268		1303
1269	if (expect_false (next->flags & CF_RUNNING))	1304	if (expect_false (next->flags & CF_RUNNING))
1270	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1305	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1271		1306
1272	if (expect_false (next->flags & CF_DESTROYED))	1307	if (expect_false (next->flags & CF_DESTROYED))
1273	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1308	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1274		1309
1275	#if !PERL_VERSION_ATLEAST (5,10,0)	1310	#if !PERL_VERSION_ATLEAST (5,10,0)
1276	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1311	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1277	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1312	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1278	#endif	1313	#endif
1279	}	1314	}
1280	}	1315	}
1281		1316
1282	/* always use the TRANSFER macro */	1317	/* always use the TRANSFER macro */
1283	static void NOINLINE	1318	static void NOINLINE /* noinline so we have a fixed stackframe */
1284	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1319	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1285	{	1320	{
1286	dSTACKLEVEL;	1321	dSTACKLEVEL;
1287		1322
1288	/* sometimes transfer is only called to set idle_sp */	1323	/* sometimes transfer is only called to set idle_sp */
…		…
1303	prev->flags \|= CF_RUNNING;	1338	prev->flags \|= CF_RUNNING;
1304	}	1339	}
1305		1340
1306	prev->flags &= ~CF_RUNNING;	1341	prev->flags &= ~CF_RUNNING;
1307	next->flags \|= CF_RUNNING;	1342	next->flags \|= CF_RUNNING;
1308
1309	LOCK;
1310		1343
1311	/* first get rid of the old state */	1344	/* first get rid of the old state */
1312	save_perl (aTHX_ prev);	1345	save_perl (aTHX_ prev);
1313		1346
1314	if (expect_false (next->flags & CF_NEW))	1347	if (expect_false (next->flags & CF_NEW))
…		…
1321	else	1354	else
1322	load_perl (aTHX_ next);	1355	load_perl (aTHX_ next);
1323		1356
1324	prev__cctx = prev->cctx;	1357	prev__cctx = prev->cctx;
1325		1358
1326	if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
1328	/* possibly "free" the cctx */	1359	/* possibly untie and reuse the cctx */
1329	if (expect_true (	1360	if (expect_true (
1330	prev__cctx->idle_sp == STACKLEVEL	1361	prev__cctx->idle_sp == STACKLEVEL
1331	&& !(prev__cctx->flags & CC_TRACE)	1362	&& !(prev__cctx->flags & CC_TRACE)
1332	&& !force_cctx	1363	&& !force_cctx
1333	))	1364	))
1334	{	1365	{
1335	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1366	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1336	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1367	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1337		1368
1338	prev->cctx = 0;	1369	prev->cctx = 0;
1339		1370
1340	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1371	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1341	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1372	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1348		1379
1349	++next->usecount;	1380	++next->usecount;
1350		1381
1351	if (expect_true (!next->cctx))	1382	if (expect_true (!next->cctx))
1352	next->cctx = cctx_get (aTHX);	1383	next->cctx = cctx_get (aTHX);
1353
1354	next_has_throw = !!next->throw;
1355		1384
1356	if (expect_false (prev__cctx != next->cctx))	1385	if (expect_false (prev__cctx != next->cctx))
1357	{	1386	{
1358	prev__cctx->top_env = PL_top_env;	1387	prev__cctx->top_env = PL_top_env;
1359	PL_top_env = next->cctx->top_env;	1388	PL_top_env = next->cctx->top_env;
1360	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1389	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1361	}	1390	}
1362		1391
1363	free_coro_mortal (aTHX);
1364	UNLOCK;
1365
1366	transfer_tail ();	1392	transfer_tail (aTHX);
1367	}	1393	}
1368	}	1394	}
1369
1370	struct transfer_args
1371	{
1372	struct coro prev, next;
1373	};
1374		1395
1375	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1396	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1397	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377		1398
1378	/ high level stuff ******************************************************/	1399	/ high level stuff ******************************************************/
…		…
1380	static int	1401	static int
1381	coro_state_destroy (pTHX_ struct coro *coro)	1402	coro_state_destroy (pTHX_ struct coro *coro)
1382	{	1403	{
1383	if (coro->flags & CF_DESTROYED)	1404	if (coro->flags & CF_DESTROYED)
1384	return 0;	1405	return 0;
		1406
		1407	if (coro->on_destroy)
		1408	coro->on_destroy (aTHX_ coro);
1385		1409
1386	coro->flags \|= CF_DESTROYED;	1410	coro->flags \|= CF_DESTROYED;
1387		1411
1388	if (coro->flags & CF_READY)	1412	if (coro->flags & CF_READY)
1389	{	1413	{
1390	/* reduce nready, as destroying a ready coro effectively unreadies it */	1414	/* reduce nready, as destroying a ready coro effectively unreadies it */
1391	/* alternative: look through all ready queues and remove the coro */	1415	/* alternative: look through all ready queues and remove the coro */
1392	LOCK;
1393	--coro_nready;	1416	--coro_nready;
1394	UNLOCK;
1395	}	1417	}
1396	else	1418	else
1397	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1419	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
1398		1420
1399	if (coro->mainstack && coro->mainstack != main_mainstack)	1421	if (coro->mainstack && coro->mainstack != main_mainstack)
1400	{	1422	{
1401	struct coro temp;	1423	struct coro temp;
1402		1424
1403	if (coro->flags & CF_RUNNING)	1425	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1404	croak ("FATAL: tried to destroy currently running coroutine");
1405		1426
1406	save_perl (aTHX_ &temp);	1427	save_perl (aTHX_ &temp);
1407	load_perl (aTHX_ coro);	1428	load_perl (aTHX_ coro);
1408		1429
1409	coro_destruct (aTHX_ coro);	1430	coro_destruct (aTHX_ coro);
…		…
1460	# define MGf_DUP 0	1481	# define MGf_DUP 0
1461	#endif	1482	#endif
1462	};	1483	};
1463		1484
1464	static void	1485	static void
1465	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1486	prepare_transfer (pTHX_ struct coro_transfer_args ta, SV prev_sv, SV *next_sv)
1466	{	1487	{
1467	ta->prev = SvSTATE (prev_sv);	1488	ta->prev = SvSTATE (prev_sv);
1468	ta->next = SvSTATE (next_sv);	1489	ta->next = SvSTATE (next_sv);
1469	TRANSFER_CHECK (*ta);	1490	TRANSFER_CHECK (*ta);
1470	}	1491	}
1471		1492
1472	static void	1493	static void
1473	api_transfer (SV prev_sv, SV next_sv)	1494	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1474	{	1495	{
1475	dTHX;
1476	struct transfer_args ta;	1496	struct coro_transfer_args ta;
1477		1497
1478	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1498	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1479	TRANSFER (ta, 1);	1499	TRANSFER (ta, 1);
1480	}	1500	}
1481		1501
1482	/ Coro ******************************************************************/	1502	/ Coro ******************************************************************/
1483		1503
1484	static void	1504	INLINE void
1485	coro_enq (pTHX_ SV *coro_sv)	1505	coro_enq (pTHX_ struct coro *coro)
1486	{	1506	{
1487	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1507	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1488	}	1508	}
1489		1509
1490	static SV *	1510	INLINE SV *
1491	coro_deq (pTHX)	1511	coro_deq (pTHX)
1492	{	1512	{
1493	int prio;	1513	int prio;
1494		1514
1495	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1515	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1498		1518
1499	return 0;	1519	return 0;
1500	}	1520	}
1501		1521
1502	static int	1522	static int
1503	api_ready (SV *coro_sv)	1523	api_ready (pTHX_ SV *coro_sv)
1504	{	1524	{
1505	dTHX;
1506	struct coro *coro;	1525	struct coro *coro;
1507	SV *sv_hook;	1526	SV *sv_hook;
1508	void (*xs_hook)(void);	1527	void (*xs_hook)(void);
1509		1528
1510	if (SvROK (coro_sv))	1529	if (SvROK (coro_sv))
…		…
1515	if (coro->flags & CF_READY)	1534	if (coro->flags & CF_READY)
1516	return 0;	1535	return 0;
1517		1536
1518	coro->flags \|= CF_READY;	1537	coro->flags \|= CF_READY;
1519		1538
1520	LOCK;
1521
1522	sv_hook = coro_nready ? 0 : coro_readyhook;	1539	sv_hook = coro_nready ? 0 : coro_readyhook;
1523	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1540	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1524		1541
1525	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1542	coro_enq (aTHX_ coro);
1526	++coro_nready;	1543	++coro_nready;
1527		1544
1528	UNLOCK;
1529
1530	if (sv_hook)	1545	if (sv_hook)
1531	{	1546	{
1532	dSP;	1547	dSP;
1533		1548
1534	ENTER;	1549	ENTER;
1535	SAVETMPS;	1550	SAVETMPS;
1536		1551
1537	PUSHMARK (SP);	1552	PUSHMARK (SP);
1538	PUTBACK;	1553	PUTBACK;
1539	call_sv (sv_hook, G_DISCARD);	1554	call_sv (sv_hook, G_VOID \| G_DISCARD);
1540	SPAGAIN;
1541		1555
1542	FREETMPS;	1556	FREETMPS;
1543	LEAVE;	1557	LEAVE;
1544	}	1558	}
1545		1559
…		…
1548		1562
1549	return 1;	1563	return 1;
1550	}	1564	}
1551		1565
1552	static int	1566	static int
1553	api_is_ready (SV *coro_sv)	1567	api_is_ready (pTHX_ SV *coro_sv)
1554	{	1568	{
1555	dTHX;
1556	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1569	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1557	}	1570	}
1558		1571
1559	static void	1572	INLINE void
1560	prepare_schedule (pTHX_ struct transfer_args *ta)	1573	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1561	{	1574	{
1562	SV prev_sv, next_sv;	1575	SV prev_sv, next_sv;
1563		1576
1564	for (;;)	1577	for (;;)
1565	{	1578	{
1566	LOCK;
1567	next_sv = coro_deq (aTHX);	1579	next_sv = coro_deq (aTHX);
1568		1580
1569	/* nothing to schedule: call the idle handler */	1581	/* nothing to schedule: call the idle handler */
1570	if (expect_false (!next_sv))	1582	if (expect_false (!next_sv))
1571	{	1583	{
1572	dSP;	1584	dSP;
1573	UNLOCK;
1574		1585
1575	ENTER;	1586	ENTER;
1576	SAVETMPS;	1587	SAVETMPS;
1577		1588
1578	PUSHMARK (SP);	1589	PUSHMARK (SP);
1579	PUTBACK;	1590	PUTBACK;
1580	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1591	call_sv (get_sv ("Coro::idle", FALSE), G_VOID \| G_DISCARD);
1581	SPAGAIN;
1582		1592
1583	FREETMPS;	1593	FREETMPS;
1584	LEAVE;	1594	LEAVE;
1585	continue;	1595	continue;
1586	}	1596	}
1587		1597
1588	ta->next = SvSTATE (next_sv);	1598	ta->next = SvSTATE_hv (next_sv);
1589		1599
1590	/* cannot transfer to destroyed coros, skip and look for next */	1600	/* cannot transfer to destroyed coros, skip and look for next */
1591	if (expect_false (ta->next->flags & CF_DESTROYED))	1601	if (expect_false (ta->next->flags & CF_DESTROYED))
1592	{	1602	{
1593	UNLOCK;
1594	SvREFCNT_dec (next_sv);	1603	SvREFCNT_dec (next_sv);
1595	/* coro_nready is already taken care of by destroy */	1604	/* coro_nready has already been taken care of by destroy */
1596	continue;	1605	continue;
1597	}	1606	}
1598		1607
1599	--coro_nready;	1608	--coro_nready;
1600	UNLOCK;
1601	break;	1609	break;
1602	}	1610	}
1603		1611
1604	/* free this only after the transfer */	1612	/* free this only after the transfer */
1605	prev_sv = SvRV (coro_current);	1613	prev_sv = SvRV (coro_current);
1606	ta->prev = SvSTATE (prev_sv);	1614	ta->prev = SvSTATE_hv (prev_sv);
1607	TRANSFER_CHECK (*ta);	1615	TRANSFER_CHECK (*ta);
1608	assert (ta->next->flags & CF_READY);	1616	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1609	ta->next->flags &= ~CF_READY;	1617	ta->next->flags &= ~CF_READY;
1610	SvRV_set (coro_current, next_sv);	1618	SvRV_set (coro_current, next_sv);
1611		1619
1612	LOCK;
1613	free_coro_mortal (aTHX);	1620	free_coro_mortal (aTHX);
1614	coro_mortal = prev_sv;	1621	coro_mortal = prev_sv;
1615	UNLOCK;
1616	}	1622	}
1617		1623
1618	static void	1624	INLINE void
1619	prepare_cede (pTHX_ struct transfer_args *ta)	1625	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620	{	1626	{
1621	api_ready (coro_current);	1627	api_ready (aTHX_ coro_current);
1622	prepare_schedule (aTHX_ ta);	1628	prepare_schedule (aTHX_ ta);
1623	}	1629	}
1624		1630
		1631	INLINE void
		1632	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1633	{
		1634	SV *prev = SvRV (coro_current);
		1635
		1636	if (coro_nready)
		1637	{
		1638	prepare_schedule (aTHX_ ta);
		1639	api_ready (aTHX_ prev);
		1640	}
		1641	else
		1642	prepare_nop (aTHX_ ta);
		1643	}
		1644
		1645	static void
		1646	api_schedule (pTHX)
		1647	{
		1648	struct coro_transfer_args ta;
		1649
		1650	prepare_schedule (aTHX_ &ta);
		1651	TRANSFER (ta, 1);
		1652	}
		1653
1625	static int	1654	static int
1626	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1655	api_cede (pTHX)
1627	{	1656	{
1628	if (coro_nready)	1657	struct coro_transfer_args ta;
1629	{	1658
1630	SV *prev = SvRV (coro_current);
1631	prepare_schedule (aTHX_ ta);	1659	prepare_cede (aTHX_ &ta);
1632	api_ready (prev);	1660
		1661	if (expect_true (ta.prev != ta.next))
		1662	{
		1663	TRANSFER (ta, 1);
1633	return 1;	1664	return 1;
1634	}	1665	}
1635	else	1666	else
1636	return 0;	1667	return 0;
1637	}	1668	}
1638		1669
1639	static void
1640	api_schedule (void)
1641	{
1642	dTHX;
1643	struct transfer_args ta;
1644
1645	prepare_schedule (aTHX_ &ta);
1646	TRANSFER (ta, 1);
1647	}
1648
1649	static int	1670	static int
1650	api_cede (void)	1671	api_cede_notself (pTHX)
1651	{	1672	{
1652	dTHX;	1673	if (coro_nready)
		1674	{
1653	struct transfer_args ta;	1675	struct coro_transfer_args ta;
1654		1676
1655	prepare_cede (aTHX_ &ta);	1677	prepare_cede_notself (aTHX_ &ta);
1656
1657	if (expect_true (ta.prev != ta.next))
1658	{
1659	TRANSFER (ta, 1);	1678	TRANSFER (ta, 1);
1660	return 1;	1679	return 1;
1661	}	1680	}
1662	else	1681	else
1663	return 0;	1682	return 0;
1664	}	1683	}
1665		1684
1666	static int	1685	static void
1667	api_cede_notself (void)
1668	{
1669	dTHX;
1670	struct transfer_args ta;
1671
1672	if (prepare_cede_notself (aTHX_ &ta))
1673	{
1674	TRANSFER (ta, 1);
1675	return 1;
1676	}
1677	else
1678	return 0;
1679	}
1680
1681	static void
1682	api_trace (SV *coro_sv, int flags)	1686	api_trace (pTHX_ SV *coro_sv, int flags)
1683	{	1687	{
1684	dTHX;
1685	struct coro *coro = SvSTATE (coro_sv);	1688	struct coro *coro = SvSTATE (coro_sv);
1686		1689
1687	if (flags & CC_TRACE)	1690	if (flags & CC_TRACE)
1688	{	1691	{
1689	if (!coro->cctx)	1692	if (!coro->cctx)
1690	coro->cctx = cctx_new_run ();	1693	coro->cctx = cctx_new_run ();
1691	else if (!(coro->cctx->flags & CC_TRACE))	1694	else if (!(coro->cctx->flags & CC_TRACE))
1692	croak ("cannot enable tracing on coroutine with custom stack");	1695	croak ("cannot enable tracing on coroutine with custom stack,");
1693		1696
1694	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1697	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1695	}	1698	}
1696	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1699	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1697	{	1700	{
…		…
1702	else	1705	else
1703	coro->slot->runops = RUNOPS_DEFAULT;	1706	coro->slot->runops = RUNOPS_DEFAULT;
1704	}	1707	}
1705	}	1708	}
1706		1709
1707	#if 0	1710	/*****************************************************************************/
		1711	/* schedule-like-function opcode (SLF) */
		1712
		1713	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1714	static const CV *slf_cv;
		1715	static SV **slf_argv;
		1716	static int slf_argc, slf_arga; /* count, allocated */
		1717	static I32 slf_ax; /* top of stack, for restore */
		1718
		1719	/* this restores the stack in the case we patched the entersub, to */
		1720	/* recreate the stack frame as perl will on following calls */
		1721	/* since entersub cleared the stack */
		1722	static OP *
		1723	pp_restore (pTHX)
		1724	{
		1725	int i;
		1726	SV **SP = PL_stack_base + slf_ax;
		1727
		1728	PUSHMARK (SP);
		1729
		1730	EXTEND (SP, slf_argc + 1);
		1731
		1732	for (i = 0; i < slf_argc; ++i)
		1733	PUSHs (sv_2mortal (slf_argv [i]));
		1734
		1735	PUSHs ((SV *)CvGV (slf_cv));
		1736
		1737	RETURNOP (slf_restore.op_first);
		1738	}
		1739
1708	static int	1740	static void
1709	coro_gensub_free (pTHX_ SV sv, MAGIC mg)	1741	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1710	{	1742	{
1711	AV *padlist;	1743	SV arg = (SV )slf_frame.data;
1712	AV av = (AV )mg->mg_obj;
1713		1744
1714	abort ();	1745	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1715
1716	return 0;
1717	}	1746	}
1718		1747
1719	static MGVTBL coro_gensub_vtbl = {	1748	static void
1720	0, 0, 0, 0,	1749	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1721	coro_gensub_free	1750	{
1722	};	1751	if (items != 2)
1723	#endif	1752	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1753
		1754	frame->prepare = slf_prepare_transfer;
		1755	frame->check = slf_check_nop;
		1756	frame->data = (void )arg; / let's hope it will stay valid */
		1757	}
		1758
		1759	static void
		1760	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1761	{
		1762	frame->prepare = prepare_schedule;
		1763	frame->check = slf_check_nop;
		1764	}
		1765
		1766	static void
		1767	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1768	{
		1769	frame->prepare = prepare_cede;
		1770	frame->check = slf_check_nop;
		1771	}
		1772
		1773	static void
		1774	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1775	{
		1776	frame->prepare = prepare_cede_notself;
		1777	frame->check = slf_check_nop;
		1778	}
		1779
		1780	/*
		1781	* these not obviously related functions are all rolled into one
		1782	* function to increase chances that they all will call transfer with the same
		1783	* stack offset
		1784	* SLF stands for "schedule-like-function".
		1785	*/
		1786	static OP *
		1787	pp_slf (pTHX)
		1788	{
		1789	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1790
		1791	/* set up the slf frame, unless it has already been set-up */
		1792	/* the latter happens when a new coro has been started */
		1793	/* or when a new cctx was attached to an existing coroutine */
		1794	if (expect_true (!slf_frame.prepare))
		1795	{
		1796	/* first iteration */
		1797	dSP;
		1798	SV **arg = PL_stack_base + TOPMARK + 1;
		1799	int items = SP - arg; /* args without function object */
		1800	SV gv = sp;
		1801
		1802	/* do a quick consistency check on the "function" object, and if it isn't */
		1803	/* for us, divert to the real entersub */
		1804	if (SvTYPE (gv) != SVt_PVGV
		1805	\|\| !GvCV (gv)
		1806	\|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1807	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1808
		1809	if (!(PL_op->op_flags & OPf_STACKED))
		1810	{
		1811	/* ampersand-form of call, use @_ instead of stack */
		1812	AV *av = GvAV (PL_defgv);
		1813	arg = AvARRAY (av);
		1814	items = AvFILLp (av) + 1;
		1815	}
		1816
		1817	/* now call the init function, which needs to set up slf_frame */
		1818	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1819	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1820
		1821	/* pop args */
		1822	SP = PL_stack_base + POPMARK;
		1823
		1824	PUTBACK;
		1825	}
		1826
		1827	/* now that we have a slf_frame, interpret it! */
		1828	/* we use a callback system not to make the code needlessly */
		1829	/* complicated, but so we can run multiple perl coros from one cctx */
		1830
		1831	do
		1832	{
		1833	struct coro_transfer_args ta;
		1834
		1835	slf_frame.prepare (aTHX_ &ta);
		1836	TRANSFER (ta, 0);
		1837
		1838	checkmark = PL_stack_sp - PL_stack_base;
		1839	}
		1840	while (slf_frame.check (aTHX_ &slf_frame));
		1841
		1842	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		1843
		1844	/* exception handling */
		1845	if (expect_false (CORO_THROW))
		1846	{
		1847	SV *exception = sv_2mortal (CORO_THROW);
		1848
		1849	CORO_THROW = 0;
		1850	sv_setsv (ERRSV, exception);
		1851	croak (0);
		1852	}
		1853
		1854	/* return value handling - mostly like entersub */
		1855	/* make sure we put something on the stack in scalar context */
		1856	if (GIMME_V == G_SCALAR)
		1857	{
		1858	dSP;
		1859	SV **bot = PL_stack_base + checkmark;
		1860
		1861	if (sp == bot) /* too few, push undef */
		1862	bot [1] = &PL_sv_undef;
		1863	else if (sp != bot + 1) /* too many, take last one */
		1864	bot [1] = *sp;
		1865
		1866	SP = bot + 1;
		1867
		1868	PUTBACK;
		1869	}
		1870
		1871	return NORMAL;
		1872	}
		1873
		1874	static void
		1875	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		1876	{
		1877	int i;
		1878	SV **arg = PL_stack_base + ax;
		1879	int items = PL_stack_sp - arg + 1;
		1880
		1881	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1882
		1883	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1884	&& PL_op->op_ppaddr != pp_slf)
		1885	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1886
		1887	CvFLAGS (cv) \|= CVf_SLF;
		1888	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1889	slf_cv = cv;
		1890
		1891	/* we patch the op, and then re-run the whole call */
		1892	/* we have to put the same argument on the stack for this to work */
		1893	/* and this will be done by pp_restore */
		1894	slf_restore.op_next = (OP *)&slf_restore;
		1895	slf_restore.op_type = OP_CUSTOM;
		1896	slf_restore.op_ppaddr = pp_restore;
		1897	slf_restore.op_first = PL_op;
		1898
		1899	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		1900
		1901	if (PL_op->op_flags & OPf_STACKED)
		1902	{
		1903	if (items > slf_arga)
		1904	{
		1905	slf_arga = items;
		1906	free (slf_argv);
		1907	slf_argv = malloc (slf_arga * sizeof (SV *));
		1908	}
		1909
		1910	slf_argc = items;
		1911
		1912	for (i = 0; i < items; ++i)
		1913	slf_argv [i] = SvREFCNT_inc (arg [i]);
		1914	}
		1915	else
		1916	slf_argc = 0;
		1917
		1918	PL_op->op_ppaddr = pp_slf;
		1919	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		1920
		1921	PL_op = (OP *)&slf_restore;
		1922	}
1724		1923
1725	/*****************************************************************************/	1924	/*****************************************************************************/
1726	/* PerlIO::cede */	1925	/* PerlIO::cede */
1727		1926
1728	typedef struct	1927	typedef struct
…		…
1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1955	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757	double now = nvtime ();	1956	double now = nvtime ();
1758		1957
1759	if (now >= self->next)	1958	if (now >= self->next)
1760	{	1959	{
1761	api_cede ();	1960	api_cede (aTHX);
1762	self->next = now + self->every;	1961	self->next = now + self->every;
1763	}	1962	}
1764		1963
1765	return PerlIOBuf_flush (aTHX_ f);	1964	return PerlIOBuf_flush (aTHX_ f);
1766	}	1965	}
…		…
1795	PerlIOBuf_get_ptr,	1994	PerlIOBuf_get_ptr,
1796	PerlIOBuf_get_cnt,	1995	PerlIOBuf_get_cnt,
1797	PerlIOBuf_set_ptrcnt,	1996	PerlIOBuf_set_ptrcnt,
1798	};	1997	};
1799		1998
		1999	/*****************************************************************************/
		2000	/* Coro::Semaphore */
		2001
		2002	static SV *
		2003	coro_semaphore_new (int count)
		2004	{
		2005	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2006	AV *av = newAV ();
		2007	SV **ary;
		2008
		2009	/* unfortunately, building manually saves memory */
		2010	Newx (ary, 2, SV *);
		2011	AvALLOC (av) = ary;
		2012	AvARRAY (av) = ary;
		2013	AvMAX (av) = 1;
		2014	AvFILLp (av) = 0;
		2015	ary [0] = newSViv (count);
		2016
		2017	return newRV_noinc ((SV *)av);
		2018	}
		2019
		2020	static void
		2021	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
		2022	{
		2023	SV *count_sv = AvARRAY (av)[0];
		2024	IV count = SvIVX (count_sv);
		2025
		2026	count += adjust;
		2027	SvIVX (count_sv) = count;
		2028
		2029	/* now wake up as many waiters as are expected to lock */
		2030	while (count > 0 && AvFILLp (av) > 0)
		2031	{
		2032	SV *cb;
		2033
		2034	/* swap first two elements so we can shift a waiter */
		2035	AvARRAY (av)[0] = AvARRAY (av)[1];
		2036	AvARRAY (av)[1] = count_sv;
		2037	cb = av_shift (av);
		2038
		2039	if (SvOBJECT (cb))
		2040	api_ready (aTHX_ cb);
		2041	else
		2042	croak ("callbacks not yet supported");
		2043
		2044	SvREFCNT_dec (cb);
		2045
		2046	--count;
		2047	}
		2048	}
		2049
		2050	static void
		2051	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2052	{
		2053	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2054	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2055	}
		2056
		2057	static int
		2058	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
		2059	{
		2060	AV av = (AV )frame->data;
		2061	SV *count_sv = AvARRAY (av)[0];
		2062
		2063	/* if we are about to throw, don't actually acquire the lock, just throw */
		2064	if (CORO_THROW)
		2065	return 0;
		2066	else if (SvIVX (count_sv) > 0)
		2067	{
		2068	SvSTATE_current->on_destroy = 0;
		2069
		2070	if (acquire)
		2071	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2072	else
		2073	coro_semaphore_adjust (aTHX_ av, 0);
		2074
		2075	return 0;
		2076	}
		2077	else
		2078	{
		2079	int i;
		2080	/* if we were woken up but can't down, we look through the whole */
		2081	/* waiters list and only add us if we aren't in there already */
		2082	/* this avoids some degenerate memory usage cases */
		2083
		2084	for (i = 1; i <= AvFILLp (av); ++i)
		2085	if (AvARRAY (av)[i] == SvRV (coro_current))
		2086	return 1;
		2087
		2088	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2089	return 1;
		2090	}
		2091	}
		2092
		2093	static int
		2094	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2095	{
		2096	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2097	}
		2098
		2099	static int
		2100	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2101	{
		2102	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2103	}
		2104
		2105	static void
		2106	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2107	{
		2108	AV av = (AV )SvRV (arg [0]);
		2109
		2110	if (SvIVX (AvARRAY (av)[0]) > 0)
		2111	{
		2112	frame->data = (void *)av;
		2113	frame->prepare = prepare_nop;
		2114	}
		2115	else
		2116	{
		2117	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2118
		2119	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2120	frame->prepare = prepare_schedule;
		2121
		2122	/* to avoid race conditions when a woken-up coro gets terminated */
		2123	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2124	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2125	}
		2126	}
		2127
		2128	static void
		2129	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2130	{
		2131	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2132	frame->check = slf_check_semaphore_down;
		2133	}
		2134
		2135	static void
		2136	slf_init_semaphore_wait (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2137	{
		2138	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2139	frame->check = slf_check_semaphore_wait;
		2140	}
		2141
		2142	/*****************************************************************************/
		2143	/* gensub: simple closure generation utility */
		2144
		2145	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2146
		2147	/* create a closure from XS, returns a code reference */
		2148	/* the arg can be accessed via GENSUB_ARG from the callback */
		2149	/* the callback must use dXSARGS/XSRETURN */
		2150	static SV *
		2151	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
		2152	{
		2153	CV cv = (CV )newSV (0);
		2154
		2155	sv_upgrade ((SV *)cv, SVt_PVCV);
		2156
		2157	CvANON_on (cv);
		2158	CvISXSUB_on (cv);
		2159	CvXSUB (cv) = xsub;
		2160	GENSUB_ARG = arg;
		2161
		2162	return newRV_noinc ((SV *)cv);
		2163	}
		2164
		2165	/*****************************************************************************/
		2166	/* Coro::AIO */
		2167
		2168	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2169
		2170	/* helper storage struct */
		2171	struct io_state
		2172	{
		2173	int errorno;
		2174	I32 laststype; /* U16 in 5.10.0 */
		2175	int laststatval;
		2176	Stat_t statcache;
		2177	};
		2178
		2179	static void
		2180	coro_aio_callback (pTHX_ CV *cv)
		2181	{
		2182	dXSARGS;
		2183	AV state = (AV )GENSUB_ARG;
		2184	SV *coro = av_pop (state);
		2185	SV *data_sv = newSV (sizeof (struct io_state));
		2186
		2187	av_extend (state, items);
		2188
		2189	sv_upgrade (data_sv, SVt_PV);
		2190	SvCUR_set (data_sv, sizeof (struct io_state));
		2191	SvPOK_only (data_sv);
		2192
		2193	{
		2194	struct io_state data = (struct io_state )SvPVX (data_sv);
		2195
		2196	data->errorno = errno;
		2197	data->laststype = PL_laststype;
		2198	data->laststatval = PL_laststatval;
		2199	data->statcache = PL_statcache;
		2200	}
		2201
		2202	/* now build the result vector out of all the parameters and the data_sv */
		2203	{
		2204	int i;
		2205
		2206	for (i = 0; i < items; ++i)
		2207	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2208	}
		2209
		2210	av_push (state, data_sv);
		2211
		2212	api_ready (aTHX_ coro);
		2213	SvREFCNT_dec (coro);
		2214	SvREFCNT_dec ((AV *)state);
		2215	}
		2216
		2217	static int
		2218	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2219	{
		2220	AV state = (AV )frame->data;
		2221
		2222	/* if we are about to throw, return early */
		2223	/* this does not cancel the aio request, but at least */
		2224	/* it quickly returns */
		2225	if (CORO_THROW)
		2226	return 0;
		2227
		2228	/* one element that is an RV? repeat! */
		2229	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2230	return 1;
		2231
		2232	/* restore status */
		2233	{
		2234	SV *data_sv = av_pop (state);
		2235	struct io_state data = (struct io_state )SvPVX (data_sv);
		2236
		2237	errno = data->errorno;
		2238	PL_laststype = data->laststype;
		2239	PL_laststatval = data->laststatval;
		2240	PL_statcache = data->statcache;
		2241
		2242	SvREFCNT_dec (data_sv);
		2243	}
		2244
		2245	/* push result values */
		2246	{
		2247	dSP;
		2248	int i;
		2249
		2250	EXTEND (SP, AvFILLp (state) + 1);
		2251	for (i = 0; i <= AvFILLp (state); ++i)
		2252	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2253
		2254	PUTBACK;
		2255	}
		2256
		2257	return 0;
		2258	}
		2259
		2260	static void
		2261	slf_init_aio_req (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2262	{
		2263	AV state = (AV )sv_2mortal ((SV *)newAV ());
		2264	SV *coro_hv = SvRV (coro_current);
		2265	struct coro *coro = SvSTATE_hv (coro_hv);
		2266
		2267	/* put our coroutine id on the state arg */
		2268	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2269
		2270	/* first see whether we have a non-zero priority and set it as AIO prio */
		2271	if (coro->prio)
		2272	{
		2273	dSP;
		2274
		2275	static SV *prio_cv;
		2276	static SV *prio_sv;
		2277
		2278	if (expect_false (!prio_cv))
		2279	{
		2280	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2281	prio_sv = newSViv (0);
		2282	}
		2283
		2284	PUSHMARK (SP);
		2285	sv_setiv (prio_sv, coro->prio);
		2286	XPUSHs (prio_sv);
		2287
		2288	PUTBACK;
		2289	call_sv (prio_cv, G_VOID \| G_DISCARD);
		2290	}
		2291
		2292	/* now call the original request */
		2293	{
		2294	dSP;
		2295	CV req = (CV )CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2296	int i;
		2297
		2298	PUSHMARK (SP);
		2299
		2300	/* first push all args to the stack */
		2301	EXTEND (SP, items + 1);
		2302
		2303	for (i = 0; i < items; ++i)
		2304	PUSHs (arg [i]);
		2305
		2306	/* now push the callback closure */
		2307	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void )SvREFCNT_inc_NN ((SV )state))));
		2308
		2309	/* now call the AIO function - we assume our request is uncancelable */
		2310	PUTBACK;
		2311	call_sv ((SV *)req, G_VOID \| G_DISCARD);
		2312	}
		2313
		2314	/* now that the requets is going, we loop toll we have a result */
		2315	frame->data = (void *)state;
		2316	frame->prepare = prepare_schedule;
		2317	frame->check = slf_check_aio_req;
		2318	}
		2319
		2320	static void
		2321	coro_aio_req_xs (pTHX_ CV *cv)
		2322	{
		2323	dXSARGS;
		2324
		2325	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2326
		2327	XSRETURN_EMPTY;
		2328	}
		2329
		2330	/*****************************************************************************/
1800		2331
1801	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2332	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1802		2333
1803	PROTOTYPES: DISABLE	2334	PROTOTYPES: DISABLE
1804		2335
1805	BOOT:	2336	BOOT:
1806	{	2337	{
1807	#ifdef USE_ITHREADS	2338	#ifdef USE_ITHREADS
1808	MUTEX_INIT (&coro_lock);
1809	# if CORO_PTHREAD	2339	# if CORO_PTHREAD
1810	coro_thx = PERL_GET_CONTEXT;	2340	coro_thx = PERL_GET_CONTEXT;
1811	# endif	2341	# endif
1812	#endif	2342	#endif
1813	BOOT_PAGESIZE;	2343	BOOT_PAGESIZE;
…		…
1834	main_top_env = PL_top_env;	2364	main_top_env = PL_top_env;
1835		2365
1836	while (main_top_env->je_prev)	2366	while (main_top_env->je_prev)
1837	main_top_env = main_top_env->je_prev;	2367	main_top_env = main_top_env->je_prev;
1838		2368
		2369	{
		2370	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2371
		2372	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2373	hv_store_ent (PL_custom_op_names, slf,
		2374	newSVpv ("coro_slf", 0), 0);
		2375
		2376	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2377	hv_store_ent (PL_custom_op_descs, slf,
		2378	newSVpv ("coro schedule like function", 0), 0);
		2379	}
		2380
1839	coroapi.ver = CORO_API_VERSION;	2381	coroapi.ver = CORO_API_VERSION;
1840	coroapi.rev = CORO_API_REVISION;	2382	coroapi.rev = CORO_API_REVISION;
		2383
1841	coroapi.transfer = api_transfer;	2384	coroapi.transfer = api_transfer;
		2385
		2386	coroapi.sv_state = SvSTATE_;
		2387	coroapi.execute_slf = api_execute_slf;
		2388	coroapi.prepare_nop = prepare_nop;
		2389	coroapi.prepare_schedule = prepare_schedule;
		2390	coroapi.prepare_cede = prepare_cede;
		2391	coroapi.prepare_cede_notself = prepare_cede_notself;
1842		2392
1843	{	2393	{
1844	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2394	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845		2395
1846	if (!svp) croak ("Time::HiRes is required");	2396	if (!svp) croak ("Time::HiRes is required");
…		…
1879	av_push (coro->args, newSVsv (ST (i)));	2429	av_push (coro->args, newSVsv (ST (i)));
1880	}	2430	}
1881	OUTPUT:	2431	OUTPUT:
1882	RETVAL	2432	RETVAL
1883		2433
1884	# these not obviously related functions are all rolled into the same xs
1885	# function to increase chances that they all will call transfer with the same
1886	# stack offset
1887	void	2434	void
1888	_set_stacklevel (...)	2435	transfer (...)
1889	ALIAS:	2436	PROTOTYPE: $$
1890	Coro::State::transfer = 1	2437	CODE:
1891	Coro::schedule = 2	2438	CORO_EXECUTE_SLF_XS (slf_init_transfer);
1892	Coro::cede = 3
1893	Coro::cede_notself = 4
1894	CODE:
1895	{
1896	struct transfer_args ta;
1897
1898	PUTBACK;
1899	switch (ix)
1900	{
1901	case 0:
1902	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1903	ta.next = 0;
1904	break;
1905
1906	case 1:
1907	if (items != 2)
1908	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1909
1910	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1911	break;
1912
1913	case 2:
1914	prepare_schedule (aTHX_ &ta);
1915	break;
1916
1917	case 3:
1918	prepare_cede (aTHX_ &ta);
1919	break;
1920
1921	case 4:
1922	if (!prepare_cede_notself (aTHX_ &ta))
1923	XSRETURN_EMPTY;
1924
1925	break;
1926	}
1927	SPAGAIN;
1928
1929	BARRIER;
1930	PUTBACK;
1931	TRANSFER (ta, 0);
1932	SPAGAIN; /* might be the sp of a different coroutine now */
1933	/* be extra careful not to ever do anything after TRANSFER */
1934	}
1935		2439
1936	bool	2440	bool
1937	_destroy (SV *coro_sv)	2441	_destroy (SV *coro_sv)
1938	CODE:	2442	CODE:
1939	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2443	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1946	CODE:	2450	CODE:
1947	_exit (code);	2451	_exit (code);
1948		2452
1949	int	2453	int
1950	cctx_stacksize (int new_stacksize = 0)	2454	cctx_stacksize (int new_stacksize = 0)
		2455	PROTOTYPE: ;$
1951	CODE:	2456	CODE:
1952	RETVAL = cctx_stacksize;	2457	RETVAL = cctx_stacksize;
1953	if (new_stacksize)	2458	if (new_stacksize)
1954	{	2459	{
1955	cctx_stacksize = new_stacksize;	2460	cctx_stacksize = new_stacksize;
…		…
1958	OUTPUT:	2463	OUTPUT:
1959	RETVAL	2464	RETVAL
1960		2465
1961	int	2466	int
1962	cctx_max_idle (int max_idle = 0)	2467	cctx_max_idle (int max_idle = 0)
		2468	PROTOTYPE: ;$
1963	CODE:	2469	CODE:
1964	RETVAL = cctx_max_idle;	2470	RETVAL = cctx_max_idle;
1965	if (max_idle > 1)	2471	if (max_idle > 1)
1966	cctx_max_idle = max_idle;	2472	cctx_max_idle = max_idle;
1967	OUTPUT:	2473	OUTPUT:
1968	RETVAL	2474	RETVAL
1969		2475
1970	int	2476	int
1971	cctx_count ()	2477	cctx_count ()
		2478	PROTOTYPE:
1972	CODE:	2479	CODE:
1973	RETVAL = cctx_count;	2480	RETVAL = cctx_count;
1974	OUTPUT:	2481	OUTPUT:
1975	RETVAL	2482	RETVAL
1976		2483
1977	int	2484	int
1978	cctx_idle ()	2485	cctx_idle ()
		2486	PROTOTYPE:
1979	CODE:	2487	CODE:
1980	RETVAL = cctx_idle;	2488	RETVAL = cctx_idle;
1981	OUTPUT:	2489	OUTPUT:
1982	RETVAL	2490	RETVAL
1983		2491
1984	void	2492	void
1985	list ()	2493	list ()
		2494	PROTOTYPE:
1986	PPCODE:	2495	PPCODE:
1987	{	2496	{
1988	struct coro *coro;	2497	struct coro *coro;
1989	for (coro = coro_first; coro; coro = coro->next)	2498	for (coro = coro_first; coro; coro = coro->next)
1990	if (coro->hv)	2499	if (coro->hv)
…		…
2049	RETVAL = boolSV (coro->flags & ix);	2558	RETVAL = boolSV (coro->flags & ix);
2050	OUTPUT:	2559	OUTPUT:
2051	RETVAL	2560	RETVAL
2052		2561
2053	void	2562	void
		2563	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2564	PROTOTYPE: $;$
		2565	CODE:
		2566	{
		2567	struct coro *current = SvSTATE_current;
		2568	SV **throwp = self == current ? &CORO_THROW : &self->except;
		2569	SvREFCNT_dec (*throwp);
		2570	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2571	}
		2572
		2573	void
2054	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2574	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2575	PROTOTYPE: $;$
		2576	C_ARGS: aTHX_ coro, flags
2055		2577
2056	SV *	2578	SV *
2057	has_cctx (Coro::State coro)	2579	has_cctx (Coro::State coro)
2058	PROTOTYPE: $	2580	PROTOTYPE: $
2059	CODE:	2581	CODE:
…		…
2083	OUTPUT:	2605	OUTPUT:
2084	RETVAL	2606	RETVAL
2085		2607
2086	void	2608	void
2087	force_cctx ()	2609	force_cctx ()
		2610	PROTOTYPE:
2088	CODE:	2611	CODE:
2089	struct coro *coro = SvSTATE (coro_current);
2090	coro->cctx->idle_sp = 0;	2612	SvSTATE_current->cctx->idle_sp = 0;
2091		2613
2092	void	2614	void
2093	swap_defsv (Coro::State self)	2615	swap_defsv (Coro::State self)
2094	PROTOTYPE: $	2616	PROTOTYPE: $
2095	ALIAS:	2617	ALIAS:
2096	swap_defav = 1	2618	swap_defav = 1
2097	CODE:	2619	CODE:
2098	if (!self->slot)	2620	if (!self->slot)
2099	croak ("cannot swap state with coroutine that has no saved state");	2621	croak ("cannot swap state with coroutine that has no saved state,");
2100	else	2622	else
2101	{	2623	{
2102	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2624	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2103	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2625	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2104		2626
2105	SV tmp = src; src = dst; *dst = tmp;	2627	SV tmp = src; src = dst; *dst = tmp;
2106	}	2628	}
		2629
2107		2630
2108	MODULE = Coro::State PACKAGE = Coro	2631	MODULE = Coro::State PACKAGE = Coro
2109		2632
2110	BOOT:	2633	BOOT:
2111	{	2634	{
…		…
2129		2652
2130	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2653	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2131	coro_ready[i] = newAV ();	2654	coro_ready[i] = newAV ();
2132		2655
2133	{	2656	{
2134	SV *sv = perl_get_sv ("Coro::API", TRUE);	2657	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2135	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2136		2658
2137	coroapi.schedule = api_schedule;	2659	coroapi.schedule = api_schedule;
2138	coroapi.cede = api_cede;	2660	coroapi.cede = api_cede;
2139	coroapi.cede_notself = api_cede_notself;	2661	coroapi.cede_notself = api_cede_notself;
2140	coroapi.ready = api_ready;	2662	coroapi.ready = api_ready;
2141	coroapi.is_ready = api_is_ready;	2663	coroapi.is_ready = api_is_ready;
2142	coroapi.nready = &coro_nready;	2664	coroapi.nready = coro_nready;
2143	coroapi.current = coro_current;	2665	coroapi.current = coro_current;
2144		2666
2145	GCoroAPI = &coroapi;	2667	/GCoroAPI = &coroapi;/
2146	sv_setiv (sv, (IV)&coroapi);	2668	sv_setiv (sv, (IV)&coroapi);
2147	SvREADONLY_on (sv);	2669	SvREADONLY_on (sv);
2148	}	2670	}
2149	}	2671	}
		2672
		2673	void
		2674	schedule (...)
		2675	CODE:
		2676	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		2677
		2678	void
		2679	cede (...)
		2680	CODE:
		2681	CORO_EXECUTE_SLF_XS (slf_init_cede);
		2682
		2683	void
		2684	cede_notself (...)
		2685	CODE:
		2686	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2150		2687
2151	void	2688	void
2152	_set_current (SV *current)	2689	_set_current (SV *current)
2153	PROTOTYPE: $	2690	PROTOTYPE: $
2154	CODE:	2691	CODE:
…		…
2157		2694
2158	void	2695	void
2159	_set_readyhook (SV *hook)	2696	_set_readyhook (SV *hook)
2160	PROTOTYPE: $	2697	PROTOTYPE: $
2161	CODE:	2698	CODE:
2162	LOCK;
2163	SvREFCNT_dec (coro_readyhook);	2699	SvREFCNT_dec (coro_readyhook);
2164	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2700	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2165	UNLOCK;
2166		2701
2167	int	2702	int
2168	prio (Coro::State coro, int newprio = 0)	2703	prio (Coro::State coro, int newprio = 0)
		2704	PROTOTYPE: $;$
2169	ALIAS:	2705	ALIAS:
2170	nice = 1	2706	nice = 1
2171	CODE:	2707	CODE:
2172	{	2708	{
2173	RETVAL = coro->prio;	2709	RETVAL = coro->prio;
…		…
2188		2724
2189	SV *	2725	SV *
2190	ready (SV *self)	2726	ready (SV *self)
2191	PROTOTYPE: $	2727	PROTOTYPE: $
2192	CODE:	2728	CODE:
2193	RETVAL = boolSV (api_ready (self));	2729	RETVAL = boolSV (api_ready (aTHX_ self));
2194	OUTPUT:	2730	OUTPUT:
2195	RETVAL	2731	RETVAL
2196		2732
2197	int	2733	int
2198	nready (...)	2734	nready (...)
…		…
2200	CODE:	2736	CODE:
2201	RETVAL = coro_nready;	2737	RETVAL = coro_nready;
2202	OUTPUT:	2738	OUTPUT:
2203	RETVAL	2739	RETVAL
2204		2740
2205	void
2206	throw (Coro::State self, SV *throw = &PL_sv_undef)
2207	PROTOTYPE: $;$
2208	CODE:
2209	SvREFCNT_dec (self->throw);
2210	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2211
2212	# for async_pool speedup	2741	# for async_pool speedup
2213	void	2742	void
2214	_pool_1 (SV *cb)	2743	_pool_1 (SV *cb)
2215	CODE:	2744	CODE:
2216	{	2745	{
2217	struct coro *coro = SvSTATE (coro_current);
2218	HV hv = (HV )SvRV (coro_current);	2746	HV hv = (HV )SvRV (coro_current);
		2747	struct coro coro = SvSTATE_hv ((SV )hv);
2219	AV *defav = GvAV (PL_defgv);	2748	AV *defav = GvAV (PL_defgv);
2220	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2749	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2221	AV *invoke_av;	2750	AV *invoke_av;
2222	int i, len;	2751	int i, len;
2223		2752
…		…
2244	{	2773	{
2245	av_fill (defav, len - 1);	2774	av_fill (defav, len - 1);
2246	for (i = 0; i < len; ++i)	2775	for (i = 0; i < len; ++i)
2247	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2776	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2248	}	2777	}
2249
2250	SvREFCNT_dec (invoke);
2251	}	2778	}
2252		2779
2253	void	2780	void
2254	_pool_2 (SV *cb)	2781	_pool_2 (SV *cb)
2255	CODE:	2782	CODE:
2256	{	2783	{
2257	struct coro *coro = SvSTATE (coro_current);	2784	HV hv = (HV )SvRV (coro_current);
		2785	struct coro coro = SvSTATE_hv ((SV )hv);
2258		2786
2259	sv_setsv (cb, &PL_sv_undef);	2787	sv_setsv (cb, &PL_sv_undef);
2260		2788
2261	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2789	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2262	coro->saved_deffh = 0;	2790	coro->saved_deffh = 0;
…		…
2269	SvREFCNT_dec (old);	2797	SvREFCNT_dec (old);
2270	croak ("\3async_pool terminate\2\n");	2798	croak ("\3async_pool terminate\2\n");
2271	}	2799	}
2272		2800
2273	av_clear (GvAV (PL_defgv));	2801	av_clear (GvAV (PL_defgv));
2274	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2802	hv_store (hv, "desc", sizeof ("desc") - 1,
2275	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2803	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276		2804
2277	coro->prio = 0;	2805	coro->prio = 0;
2278		2806
2279	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2807	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280	api_trace (coro_current, 0);	2808	api_trace (aTHX_ coro_current, 0);
2281		2809
2282	av_push (av_async_pool, newSVsv (coro_current));	2810	av_push (av_async_pool, newSVsv (coro_current));
2283	}	2811	}
2284		2812
2285	#if 0
2286		2813
2287	void	2814	MODULE = Coro::State PACKAGE = PerlIO::cede
2288	_generator_call (...)	2815
2289	PROTOTYPE: @	2816	BOOT:
2290	PPCODE:	2817	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2291	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);	2818
2292	xxxx	2819
2293	abort ();	2820	MODULE = Coro::State PACKAGE = Coro::Semaphore
2294		2821
2295	SV *	2822	SV *
2296	gensub (SV *sub, ...)	2823	new (SV klass, SV count = 0)
2297	PROTOTYPE: &;@	2824	CODE:
2298	CODE:	2825	RETVAL = sv_bless (
2299	{	2826	coro_semaphore_new (count && SvOK (count) ? SvIV (count) : 1),
2300	struct coro *coro;	2827	GvSTASH (CvGV (cv))
2301	MAGIC *mg;	2828	);
2302	CV *xcv;
2303	CV ncv = (CV )newSV_type (SVt_PVCV);
2304	int i;
2305
2306	CvGV (ncv) = CvGV (cv);
2307	CvFILE (ncv) = CvFILE (cv);
2308
2309	Newz (0, coro, 1, struct coro);
2310	coro->args = newAV ();
2311	coro->flags = CF_NEW;
2312
2313	av_extend (coro->args, items - 1);
2314	for (i = 1; i < items; i++)
2315	av_push (coro->args, newSVsv (ST (i)));
2316
2317	CvISXSUB_on (ncv);
2318	CvXSUBANY (ncv).any_ptr = (void *)coro;
2319
2320	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2321
2322	CvXSUB (ncv) = CvXSUB (xcv);
2323	CvANON_on (ncv);
2324
2325	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2326	RETVAL = newRV_noinc ((SV *)ncv);
2327	}
2328	OUTPUT:	2829	OUTPUT:
2329	RETVAL	2830	RETVAL
2330		2831
2331	#endif	2832	# helper for Coro::Channel
		2833	SV *
		2834	_alloc (int count)
		2835	CODE:
		2836	RETVAL = coro_semaphore_new (count);
		2837	OUTPUT:
		2838	RETVAL
2332		2839
2333		2840	SV *
2334	MODULE = Coro::State PACKAGE = Coro::AIO	2841	count (SV *self)
		2842	CODE:
		2843	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2844	OUTPUT:
		2845	RETVAL
2335		2846
2336	void	2847	void
2337	_get_state (SV *self)	2848	up (SV *self, int adjust = 1)
2338	PPCODE:	2849	ALIAS:
2339	{	2850	adjust = 1
2340	AV *defav = GvAV (PL_defgv);	2851	CODE:
2341	AV *av = newAV ();	2852	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2342	int i;
2343	SV *data_sv = newSV (sizeof (struct io_state));
2344	struct io_state data = (struct io_state )SvPVX (data_sv);
2345	SvCUR_set (data_sv, sizeof (struct io_state));
2346	SvPOK_only (data_sv);
2347
2348	data->errorno = errno;
2349	data->laststype = PL_laststype;
2350	data->laststatval = PL_laststatval;
2351	data->statcache = PL_statcache;
2352
2353	av_extend (av, AvFILLp (defav) + 1 + 1);
2354
2355	for (i = 0; i <= AvFILLp (defav); ++i)
2356	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2357
2358	av_push (av, data_sv);
2359
2360	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2361
2362	api_ready (self);
2363	}
2364		2853
2365	void	2854	void
2366	_set_state (SV *state)	2855	down (SV *self)
2367	PROTOTYPE: $	2856	ALIAS:
		2857	Coro::Signal::wait = 0
		2858	CODE:
		2859	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		2860
		2861	void
		2862	wait (SV *self)
		2863	CODE:
		2864	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
		2865
		2866	void
		2867	try (SV *self)
		2868	PPCODE:
		2869	{
		2870	AV av = (AV )SvRV (self);
		2871	SV *count_sv = AvARRAY (av)[0];
		2872	IV count = SvIVX (count_sv);
		2873
		2874	if (count > 0)
		2875	{
		2876	--count;
		2877	SvIVX (count_sv) = count;
		2878	XSRETURN_YES;
		2879	}
		2880	else
		2881	XSRETURN_NO;
		2882	}
		2883
		2884	void
		2885	waiters (SV *self)
		2886	PPCODE:
		2887	{
		2888	AV av = (AV )SvRV (self);
		2889	int wcount = AvFILLp (av) + 1 - 1;
		2890
		2891	if (GIMME_V == G_SCALAR)
		2892	XPUSHs (sv_2mortal (newSViv (wcount)));
		2893	else
		2894	{
		2895	int i;
		2896	EXTEND (SP, wcount);
		2897	for (i = 1; i <= wcount; ++i)
		2898	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
		2899	}
		2900	}
		2901
		2902	MODULE = Coro::State PACKAGE = Coro::Signal
		2903
		2904	SV *
		2905	new (SV *klass)
2368	PPCODE:	2906	CODE:
		2907	RETVAL = sv_bless (
		2908	coro_semaphore_new (0),
		2909	GvSTASH (CvGV (cv))
		2910	);
		2911	OUTPUT:
		2912	RETVAL
		2913
		2914	void
		2915	broadcast (SV *self, int adjust = 1)
		2916	CODE:
2369	{	2917	{
2370	AV av = (AV )SvRV (state);	2918	AV av = (AV )SvRV (self);
2371	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);	2919	SvIVX (AvARRAY (av)[0]) = 0; /* not necessary, but gives me fuzzy warm feelings */
2372	int i;	2920	coro_semaphore_adjust (aTHX_ av, AvFILLp (av) + 1 - 1);
2373		2921	SvIVX (AvARRAY (av)[0]) = 0; /* necessary */
2374	errno = data->errorno;
2375	PL_laststype = data->laststype;
2376	PL_laststatval = data->laststatval;
2377	PL_statcache = data->statcache;
2378
2379	EXTEND (SP, AvFILLp (av));
2380	for (i = 0; i < AvFILLp (av); ++i)
2381	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2382	}	2922	}
2383		2923
2384		2924
2385	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2925	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2386		2926
2387	BOOT:	2927	BOOT:
2388	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2928	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2389		2929
2390	SV *	2930	void
2391	_schedule (...)	2931	_schedule (...)
2392	PROTOTYPE: @
2393	CODE:	2932	CODE:
2394	{	2933	{
2395	static int incede;	2934	static int incede;
2396		2935
2397	api_cede_notself ();	2936	api_cede_notself (aTHX);
2398		2937
2399	++incede;	2938	++incede;
2400	while (coro_nready >= incede && api_cede ())	2939	while (coro_nready >= incede && api_cede (aTHX))
2401	;	2940	;
2402		2941
2403	sv_setsv (sv_activity, &PL_sv_undef);	2942	sv_setsv (sv_activity, &PL_sv_undef);
2404	if (coro_nready >= incede)	2943	if (coro_nready >= incede)
2405	{	2944	{
2406	PUSHMARK (SP);	2945	PUSHMARK (SP);
2407	PUTBACK;	2946	PUTBACK;
2408	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);	2947	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
2409	SPAGAIN;
2410	}	2948	}
2411		2949
2412	--incede;	2950	--incede;
2413	}	2951	}
2414		2952
2415		2953
2416	MODULE = Coro::State PACKAGE = PerlIO::cede	2954	MODULE = Coro::State PACKAGE = Coro::AIO
2417		2955
2418	BOOT:	2956	void
2419	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2957	_register (char target, char proto, SV *req)
		2958	CODE:
		2959	{
		2960	HV *st;
		2961	GV *gvp;
		2962	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		2963	/* newXSproto doesn't return the CV on 5.8 */
		2964	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		2965	sv_setpv ((SV *)slf_cv, proto);
		2966	sv_magicext ((SV )slf_cv, (SV )req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		2967	}
		2968

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Comparing Coro/Coro/State.xs (file contents): Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs. Revision 1.299 by root, Wed Nov 19 00:06:55 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.299 by root, Wed Nov 19 00:06:55 2008 UTC