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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.273 by root, Fri Nov 14 23:48:10 2008 UTC vs.
Revision 1.301 by root, Wed Nov 19 02:41:31 2008 UTC

…		…
95	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
96	#endif	96	#endif
97	#ifndef newSV	97	#ifndef newSV
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
		100	#ifndef CvISXSUB_on
		101	# define CvISXSUB_on(cv) (void)cv
		102	#endif
100		103
101	/* 5.8.7 */	104	/* 5.8.7 */
102	#ifndef SvRV_set	105	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	107	#endif
…		…
117	#endif	120	#endif
118		121
119	/* The next macros try to return the current stack pointer, in an as	122	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	123	* portable way as possible. */
121	#if __GNUC__ >= 4	124	#if __GNUC__ >= 4
		125	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	126	# define STACKLEVEL __builtin_frame_address (0)
123	#else	127	#else
124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel	128	# define dSTACKLEVEL volatile void *stacklevel
		129	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	130	#endif
126		131
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	132	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		133
129	#if __GNUC__ >= 3	134	#if __GNUC__ >= 3
…		…
140	#define expect_true(expr) expect ((expr) != 0, 1)	145	#define expect_true(expr) expect ((expr) != 0, 1)
141		146
142	#define NOINLINE attribute ((noinline))	147	#define NOINLINE attribute ((noinline))
143		148
144	#include "CoroAPI.h"	149	#include "CoroAPI.h"
		150	#define GCoroAPI (&coroapi) /* very sneaky */
145		151
146	#ifdef USE_ITHREADS	152	#ifdef USE_ITHREADS
147
148	static perl_mutex coro_lock;
149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151	# if CORO_PTHREAD	153	# if CORO_PTHREAD
152	static void *coro_thx;	154	static void *coro_thx;
153	# endif	155	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	156	#endif
161
162	# undef LOCK
163	# define LOCK (void)0
164	# undef UNLOCK
165	# define UNLOCK (void)0
166
167	/* helper storage struct for Coro::AIO */
168	struct io_state
169	{
170	AV *res;
171	int errorno;
172	I32 laststype; /* U16 in 5.10.0 */
173	int laststatval;
174	Stat_t statcache;
175	};
176		157
177	static double (nvtime)(); / so why doesn't it take void? */	158	static double (nvtime)(); / so why doesn't it take void? */
		159
		160	/* we hijack an hopefully unused CV flag for our purposes */
		161	#define CVf_SLF 0x4000
		162	static OP *pp_slf (pTHX);
178		163
179	static U32 cctx_gen;	164	static U32 cctx_gen;
180	static size_t cctx_stacksize = CORO_STACKSIZE;	165	static size_t cctx_stacksize = CORO_STACKSIZE;
181	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
182	static AV main_mainstack; / used to differentiate between $main and others */	167	static AV main_mainstack; / used to differentiate between $main and others */
183	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
184	static HV coro_state_stash, coro_stash;	169	static HV coro_state_stash, coro_stash;
185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	170	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;
187		171
188	static GV irsgv; / $/ */	172	static GV irsgv; / $/ */
189	static GV stdoutgv; / STDOUT /	173	static GV stdoutgv; / STDOUT /
190	static SV *rv_diehook;	174	static SV *rv_diehook;
191	static SV *rv_warnhook;	175	static SV *rv_warnhook;
…		…
257	/* this is a structure representing a perl-level coroutine */	241	/* this is a structure representing a perl-level coroutine */
258	struct coro {	242	struct coro {
259	/* the C coroutine allocated to this perl coroutine, if any */	243	/* the C coroutine allocated to this perl coroutine, if any */
260	coro_cctx *cctx;	244	coro_cctx *cctx;
261		245
262	/* process data */	246	/* state data */
263	struct CoroSLF slf_frame; /* saved slf frame */	247	struct CoroSLF slf_frame; /* saved slf frame */
264	AV *mainstack;	248	AV *mainstack;
265	perl_slots slot; / basically the saved sp */	249	perl_slots slot; / basically the saved sp */
266		250
267	AV args; / data associated with this coroutine (initial args) */	251	AV args; / data associated with this coroutine (initial args) */
268	int refcnt; /* coroutines are refcounted, yes */	252	int refcnt; /* coroutines are refcounted, yes */
269	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
270	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);
271		256
272	/* statistics */	257	/* statistics */
273	int usecount; /* number of transfers to this coro */	258	int usecount; /* number of transfers to this coro */
274		259
275	/* coro process data */	260	/* coro process data */
276	int prio;	261	int prio;
277	SV throw; / exception to be thrown */	262	SV except; / exception to be thrown */
278		263
279	/* async_pool */	264	/* async_pool */
280	SV *saved_deffh;	265	SV *saved_deffh;
281		266
282	/* linked list */	267	/* linked list */
…		…
284	};	269	};
285		270
286	typedef struct coro *Coro__State;	271	typedef struct coro *Coro__State;
287	typedef struct coro *Coro__State_or_hashref;	272	typedef struct coro *Coro__State_or_hashref;
288		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 */
289	static struct CoroSLF slf_frame; /* the current slf frame */	277	static struct CoroSLF slf_frame; /* the current slf frame */
290		278
291	/ Coro ******************************************************************/	279	/ Coro ******************************************************************/
292		280
293	#define PRIO_MAX 3	281	#define PRIO_MAX 3
…		…
395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	383	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396		384
397	return 0;	385	return 0;
398	}	386	}
399		387
400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	388	#define CORO_MAGIC_type_cv 26
401	#define CORO_MAGIC_type_state PERL_MAGIC_ext	389	#define CORO_MAGIC_type_state PERL_MAGIC_ext
402		390
403	static MGVTBL coro_cv_vtbl = {	391	static MGVTBL coro_cv_vtbl = {
404	0, 0, 0, 0,	392	0, 0, 0, 0,
405	coro_cv_free	393	coro_cv_free
406	};	394	};
407		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
408	#define CORO_MAGIC(sv, type) \	401	#define CORO_MAGIC(sv, type) \
409	SvMAGIC (sv) \	402	(expect_true (SvMAGIC (sv)) \
410	? SvMAGIC (sv)->mg_type == type \	403	? CORO_MAGIC_NN (sv, type) \
411	? SvMAGIC (sv) \
412	: mg_find (sv, type) \
413	: 0	404	: 0)
414		405
415	#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)
416	#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)
417		408
418	INLINE struct coro *	409	INLINE struct coro *
419	SvSTATE_ (pTHX_ SV *coro)	410	SvSTATE_ (pTHX_ SV *coro)
420	{	411	{
421	HV *stash;	412	HV *stash;
…		…
438	mg = CORO_MAGIC_state (coro);	429	mg = CORO_MAGIC_state (coro);
439	return (struct coro *)mg->mg_ptr;	430	return (struct coro *)mg->mg_ptr;
440	}	431	}
441		432
442	#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))
443		438
444	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
445	static void	440	static void
446	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
447	{	442	{
…		…
515	}	510	}
516		511
517	PUTBACK;	512	PUTBACK;
518	}	513	}
519		514
520	slf_frame = c->slf_frame;	515	slf_frame = c->slf_frame;
		516	CORO_THROW = c->except;
521	}	517	}
522		518
523	static void	519	static void
524	save_perl (pTHX_ Coro__State c)	520	save_perl (pTHX_ Coro__State c)
525	{	521	{
		522	c->except = CORO_THROW;
526	c->slf_frame = slf_frame;	523	c->slf_frame = slf_frame;
527		524
528	{	525	{
529	dSP;	526	dSP;
530	I32 cxix = cxstack_ix;	527	I32 cxix = cxstack_ix;
…		…
811		808
812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	809	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813	}	810	}
814		811
815	static void	812	static void
816	prepare_nop (aTHX_ struct coro_transfer_args *ta)	813	prepare_nop (pTHX_ struct coro_transfer_args *ta)
817	{	814	{
818	/* kind of mega-hacky, but works */	815	/* kind of mega-hacky, but works */
819	ta->next = ta->prev = (struct coro *)ta;	816	ta->next = ta->prev = (struct coro *)ta;
820	}	817	}
821		818
822	static int	819	static int
823	slf_check_nop (aTHX)	820	slf_check_nop (pTHX_ struct CoroSLF *frame)
824	{	821	{
825	return 0;	822	return 0;
826	}	823	}
827		824
828	static void	825	static UNOP coro_setup_op;
		826
		827	static void NOINLINE /* noinline to keep it out of the transfer fast path */
829	coro_setup (pTHX_ struct coro *coro)	828	coro_setup (pTHX_ struct coro *coro)
830	{	829	{
831	/*	830	/*
832	* emulate part of the perl startup here.	831	* emulate part of the perl startup here.
833	*/	832	*/
…		…
860	{	859	{
861	dSP;	860	dSP;
862	UNOP myop;	861	UNOP myop;
863		862
864	Zero (&myop, 1, UNOP);	863	Zero (&myop, 1, UNOP);
865	myop.op_next = Nullop;	864	myop.op_next = Nullop;
866	myop.op_flags = OPf_WANT_VOID;	865	myop.op_flags = OPf_WANT_VOID;
867		866
868	PUSHMARK (SP);	867	PUSHMARK (SP);
869	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
870	PUTBACK;	869	PUTBACK;
…		…
876	/* 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
877	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878	*/	877	*/
879	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	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;
881	}	891	}
882		892
883	static void	893	static void
884	coro_destruct (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
885	{	895	{
…		…
909		919
910	SvREFCNT_dec (PL_diehook);	920	SvREFCNT_dec (PL_diehook);
911	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
912		922
913	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
914	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (CORO_THROW);
915		925
916	coro_destruct_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
917	}	927	}
918		928
919	INLINE void	929	INLINE void
…		…
929	static int	939	static int
930	runops_trace (pTHX)	940	runops_trace (pTHX)
931	{	941	{
932	COP *oldcop = 0;	942	COP *oldcop = 0;
933	int oldcxix = -2;	943	int oldcxix = -2;
934	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 */
935	coro_cctx *cctx = coro->cctx;	945	coro_cctx *cctx = coro->cctx;
936		946
937	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	947	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938	{	948	{
939	PERL_ASYNC_CHECK ();	949	PERL_ASYNC_CHECK ();
…		…
1048		1058
1049	TAINT_NOT;	1059	TAINT_NOT;
1050	return 0;	1060	return 0;
1051	}	1061	}
1052		1062
		1063	static struct coro_cctx *cctx_ssl_cctx;
		1064	static struct CoroSLF cctx_ssl_frame;
		1065
1053	static void	1066	static void
1054	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)	1067	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055	{	1068	{
1056	ta->prev = (struct coro *)cctx;	1069	ta->prev = (struct coro *)cctx_ssl_cctx;
1057	ta->next = 0;	1070	ta->next = 0;
1058	}	1071	}
1059		1072
1060	/* inject a fake call to Coro::State::_cctx_init into the execution */	1073	static int
1061	/* _cctx_init should be careful, as it could be called at almost any time */	1074	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062	/* during execution of a perl program */	1075	{
1063	/* also initialises PL_top_env */	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 */
1064	static void NOINLINE	1082	static void NOINLINE
1065	cctx_prepare (pTHX_ coro_cctx *cctx)	1083	cctx_prepare (pTHX_ coro_cctx *cctx)
1066	{	1084	{
1067	dSP;
1068	UNOP myop;
1069
1070	PL_top_env = &PL_start_env;	1085	PL_top_env = &PL_start_env;
1071		1086
1072	if (cctx->flags & CC_TRACE)	1087	if (cctx->flags & CC_TRACE)
1073	PL_runops = runops_trace;	1088	PL_runops = runops_trace;
1074		1089
1075	Zero (&myop, 1, UNOP);	1090	/* we already must be executing an SLF op, there is no other valid way
1076	myop.op_next = PL_op;	1091	* that can lead to creation of a new cctx */
1077	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));
1078		1094
1079	PUSHMARK (SP);	1095	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080	EXTEND (SP, 2);	1096	cctx_ssl_cctx = cctx;
1081	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1097	cctx_ssl_frame = slf_frame;
1082	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1098
1083	PUTBACK;	1099	slf_frame.prepare = slf_prepare_set_stacklevel;
1084	PL_op = (OP *)&myop;	1100	slf_frame.check = slf_check_set_stacklevel;
1085	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086	SPAGAIN;
1087	}	1101	}
1088		1102
1089	/* the tail of transfer: execute stuff we can only do after a transfer */	1103	/* the tail of transfer: execute stuff we can only do after a transfer */
1090	INLINE void	1104	INLINE void
1091	transfer_tail (pTHX)	1105	transfer_tail (pTHX)
1092	{	1106	{
1093	struct coro next = (struct coro )transfer_next;
1094	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097	free_coro_mortal (aTHX);	1107	free_coro_mortal (aTHX);
1098	UNLOCK;
1099
1100	if (expect_false (next->throw))
1101	{
1102	SV *exception = sv_2mortal (next->throw);
1103
1104	next->throw = 0;
1105	sv_setsv (ERRSV, exception);
1106	croak (0);
1107	}
1108	}	1108	}
1109		1109
1110	/*	1110	/*
1111	* this is a _very_ stripped down perl interpreter ;)	1111	* this is a _very_ stripped down perl interpreter ;)
1112	*/	1112	*/
…		…
1127		1127
1128	/* inject a fake subroutine call to cctx_init */	1128	/* inject a fake subroutine call to cctx_init */
1129	cctx_prepare (aTHX_ (coro_cctx *)arg);	1129	cctx_prepare (aTHX_ (coro_cctx *)arg);
1130		1130
1131	/* cctx_run is the alternative tail of transfer() */	1131	/* cctx_run is the alternative tail of transfer() */
1132	/* TODO: throwing an exception here might be deadly, VERIFY */
1133	transfer_tail (aTHX);	1132	transfer_tail (aTHX);
1134		1133
1135	/* 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 */
1136	PL_restartop = PL_op;	1135	PL_restartop = PL_op;
1137	perl_run (PL_curinterp);	1136	perl_run (PL_curinterp);
…		…
1293	/ coroutine switching ***************************************************/	1292	/ coroutine switching ***************************************************/
1294		1293
1295	static void	1294	static void
1296	transfer_check (pTHX_ struct coro prev, struct coro next)	1295	transfer_check (pTHX_ struct coro prev, struct coro next)
1297	{	1296	{
		1297	/* TODO: throwing up here is considered harmful */
		1298
1298	if (expect_true (prev != next))	1299	if (expect_true (prev != next))
1299	{	1300	{
1300	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1301	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1301	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,");
1302		1303
…		…
1312	#endif	1313	#endif
1313	}	1314	}
1314	}	1315	}
1315		1316
1316	/* always use the TRANSFER macro */	1317	/* always use the TRANSFER macro */
1317	static void NOINLINE	1318	static void NOINLINE /* noinline so we have a fixed stackframe */
1318	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1319	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1319	{	1320	{
1320	dSTACKLEVEL;	1321	dSTACKLEVEL;
1321		1322
1322	/* sometimes transfer is only called to set idle_sp */	1323	/* sometimes transfer is only called to set idle_sp */
1323	if (expect_false (!next))	1324	if (expect_false (!next))
1324	{	1325	{
1325	((coro_cctx *)prev)->idle_sp = stacklevel;	1326	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1326	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1327	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1327	}	1328	}
1328	else if (expect_true (prev != next))	1329	else if (expect_true (prev != next))
1329	{	1330	{
1330	coro_cctx *prev__cctx;	1331	coro_cctx *prev__cctx;
…		…
1337	prev->flags \|= CF_RUNNING;	1338	prev->flags \|= CF_RUNNING;
1338	}	1339	}
1339		1340
1340	prev->flags &= ~CF_RUNNING;	1341	prev->flags &= ~CF_RUNNING;
1341	next->flags \|= CF_RUNNING;	1342	next->flags \|= CF_RUNNING;
1342
1343	LOCK;
1344		1343
1345	/* first get rid of the old state */	1344	/* first get rid of the old state */
1346	save_perl (aTHX_ prev);	1345	save_perl (aTHX_ prev);
1347		1346
1348	if (expect_false (next->flags & CF_NEW))	1347	if (expect_false (next->flags & CF_NEW))
…		…
1357		1356
1358	prev__cctx = prev->cctx;	1357	prev__cctx = prev->cctx;
1359		1358
1360	/* possibly untie and reuse the cctx */	1359	/* possibly untie and reuse the cctx */
1361	if (expect_true (	1360	if (expect_true (
1362	prev__cctx->idle_sp == stacklevel	1361	prev__cctx->idle_sp == STACKLEVEL
1363	&& !(prev__cctx->flags & CC_TRACE)	1362	&& !(prev__cctx->flags & CC_TRACE)
1364	&& !force_cctx	1363	&& !force_cctx
1365	))	1364	))
1366	{	1365	{
1367	/* 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 */
…		…
1381	++next->usecount;	1380	++next->usecount;
1382		1381
1383	if (expect_true (!next->cctx))	1382	if (expect_true (!next->cctx))
1384	next->cctx = cctx_get (aTHX);	1383	next->cctx = cctx_get (aTHX);
1385		1384
1386	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387	transfer_next = next;
1388
1389	if (expect_false (prev__cctx != next->cctx))	1385	if (expect_false (prev__cctx != next->cctx))
1390	{	1386	{
1391	prev__cctx->top_env = PL_top_env;	1387	prev__cctx->top_env = PL_top_env;
1392	PL_top_env = next->cctx->top_env;	1388	PL_top_env = next->cctx->top_env;
1393	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1389	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1406	coro_state_destroy (pTHX_ struct coro *coro)	1402	coro_state_destroy (pTHX_ struct coro *coro)
1407	{	1403	{
1408	if (coro->flags & CF_DESTROYED)	1404	if (coro->flags & CF_DESTROYED)
1409	return 0;	1405	return 0;
1410		1406
		1407	if (coro->on_destroy)
		1408	coro->on_destroy (aTHX_ coro);
		1409
1411	coro->flags \|= CF_DESTROYED;	1410	coro->flags \|= CF_DESTROYED;
1412		1411
1413	if (coro->flags & CF_READY)	1412	if (coro->flags & CF_READY)
1414	{	1413	{
1415	/* reduce nready, as destroying a ready coro effectively unreadies it */	1414	/* reduce nready, as destroying a ready coro effectively unreadies it */
1416	/* alternative: look through all ready queues and remove the coro */	1415	/* alternative: look through all ready queues and remove the coro */
1417	LOCK;
1418	--coro_nready;	1416	--coro_nready;
1419	UNLOCK;
1420	}	1417	}
1421	else	1418	else
1422	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 */
1423		1420
1424	if (coro->mainstack && coro->mainstack != main_mainstack)	1421	if (coro->mainstack && coro->mainstack != main_mainstack)
…		…
1502	TRANSFER (ta, 1);	1499	TRANSFER (ta, 1);
1503	}	1500	}
1504		1501
1505	/ Coro ******************************************************************/	1502	/ Coro ******************************************************************/
1506		1503
1507	static void	1504	INLINE void
1508	coro_enq (pTHX_ SV *coro_sv)	1505	coro_enq (pTHX_ struct coro *coro)
1509	{	1506	{
1510	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));
1511	}	1508	}
1512		1509
1513	static SV *	1510	INLINE SV *
1514	coro_deq (pTHX)	1511	coro_deq (pTHX)
1515	{	1512	{
1516	int prio;	1513	int prio;
1517		1514
1518	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1515	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1537	if (coro->flags & CF_READY)	1534	if (coro->flags & CF_READY)
1538	return 0;	1535	return 0;
1539		1536
1540	coro->flags \|= CF_READY;	1537	coro->flags \|= CF_READY;
1541		1538
1542	LOCK;
1543
1544	sv_hook = coro_nready ? 0 : coro_readyhook;	1539	sv_hook = coro_nready ? 0 : coro_readyhook;
1545	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1540	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546		1541
1547	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1542	coro_enq (aTHX_ coro);
1548	++coro_nready;	1543	++coro_nready;
1549		1544
1550	UNLOCK;
1551
1552	if (sv_hook)	1545	if (sv_hook)
1553	{	1546	{
1554	dSP;	1547	dSP;
1555		1548
1556	ENTER;	1549	ENTER;
1557	SAVETMPS;	1550	SAVETMPS;
1558		1551
1559	PUSHMARK (SP);	1552	PUSHMARK (SP);
1560	PUTBACK;	1553	PUTBACK;
1561	call_sv (sv_hook, G_DISCARD);	1554	call_sv (sv_hook, G_VOID \| G_DISCARD);
1562	SPAGAIN;
1563		1555
1564	FREETMPS;	1556	FREETMPS;
1565	LEAVE;	1557	LEAVE;
1566	}	1558	}
1567		1559
…		…
1582	{	1574	{
1583	SV prev_sv, next_sv;	1575	SV prev_sv, next_sv;
1584		1576
1585	for (;;)	1577	for (;;)
1586	{	1578	{
1587	LOCK;
1588	next_sv = coro_deq (aTHX);	1579	next_sv = coro_deq (aTHX);
1589		1580
1590	/* nothing to schedule: call the idle handler */	1581	/* nothing to schedule: call the idle handler */
1591	if (expect_false (!next_sv))	1582	if (expect_false (!next_sv))
1592	{	1583	{
1593	dSP;	1584	dSP;
1594	UNLOCK;
1595		1585
1596	ENTER;	1586	ENTER;
1597	SAVETMPS;	1587	SAVETMPS;
1598		1588
1599	PUSHMARK (SP);	1589	PUSHMARK (SP);
1600	PUTBACK;	1590	PUTBACK;
1601	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1591	call_sv (get_sv ("Coro::idle", FALSE), G_VOID \| G_DISCARD);
1602	SPAGAIN;
1603		1592
1604	FREETMPS;	1593	FREETMPS;
1605	LEAVE;	1594	LEAVE;
1606	continue;	1595	continue;
1607	}	1596	}
1608		1597
1609	ta->next = SvSTATE (next_sv);	1598	ta->next = SvSTATE_hv (next_sv);
1610		1599
1611	/* cannot transfer to destroyed coros, skip and look for next */	1600	/* cannot transfer to destroyed coros, skip and look for next */
1612	if (expect_false (ta->next->flags & CF_DESTROYED))	1601	if (expect_false (ta->next->flags & CF_DESTROYED))
1613	{	1602	{
1614	UNLOCK;
1615	SvREFCNT_dec (next_sv);	1603	SvREFCNT_dec (next_sv);
1616	/* coro_nready has already been taken care of by destroy */	1604	/* coro_nready has already been taken care of by destroy */
1617	continue;	1605	continue;
1618	}	1606	}
1619		1607
1620	--coro_nready;	1608	--coro_nready;
1621	UNLOCK;
1622	break;	1609	break;
1623	}	1610	}
1624		1611
1625	/* free this only after the transfer */	1612	/* free this only after the transfer */
1626	prev_sv = SvRV (coro_current);	1613	prev_sv = SvRV (coro_current);
1627	ta->prev = SvSTATE (prev_sv);	1614	ta->prev = SvSTATE_hv (prev_sv);
1628	TRANSFER_CHECK (*ta);	1615	TRANSFER_CHECK (*ta);
1629	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1616	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630	ta->next->flags &= ~CF_READY;	1617	ta->next->flags &= ~CF_READY;
1631	SvRV_set (coro_current, next_sv);	1618	SvRV_set (coro_current, next_sv);
1632		1619
1633	LOCK;
1634	free_coro_mortal (aTHX);	1620	free_coro_mortal (aTHX);
1635	coro_mortal = prev_sv;	1621	coro_mortal = prev_sv;
1636	UNLOCK;
1637	}	1622	}
1638		1623
1639	INLINE void	1624	INLINE void
1640	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1625	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641	{	1626	{
…		…
1720	else	1705	else
1721	coro->slot->runops = RUNOPS_DEFAULT;	1706	coro->slot->runops = RUNOPS_DEFAULT;
1722	}	1707	}
1723	}	1708	}
1724		1709
1725	#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
1726	static int	1740	static void
1727	coro_gensub_free (pTHX_ SV sv, MAGIC mg)	1741	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1728	{	1742	{
1729	AV *padlist;	1743	SV arg = (SV )slf_frame.data;
1730	AV av = (AV )mg->mg_obj;
1731		1744
1732	abort ();	1745	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1733
1734	return 0;
1735	}	1746	}
1736		1747
1737	static MGVTBL coro_gensub_vtbl = {	1748	static void
1738	0, 0, 0, 0,	1749	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1739	coro_gensub_free	1750	{
1740	};	1751	if (items != 2)
1741	#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	}
1742		1923
1743	/*****************************************************************************/	1924	/*****************************************************************************/
1744	/* PerlIO::cede */	1925	/* PerlIO::cede */
1745		1926
1746	typedef struct	1927	typedef struct
…		…
1814	PerlIOBuf_get_cnt,	1995	PerlIOBuf_get_cnt,
1815	PerlIOBuf_set_ptrcnt,	1996	PerlIOBuf_set_ptrcnt,
1816	};	1997	};
1817		1998
1818	/*****************************************************************************/	1999	/*****************************************************************************/
		2000	/* Coro::Semaphore & Coro::Signal */
1819		2001
1820	static const CV slf_cv; / for quick consistency check */
1821
1822	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823	static SV *slf_arg0;
1824	static SV *slf_arg1;
1825	static SV *slf_arg2;
1826
1827	/* this restores the stack in the case we patched the entersub, to */
1828	/* recreate the stack frame as perl will on following calls */
1829	/* since entersub cleared the stack */
1830	static OP *	2002	static SV *
1831	pp_restore (pTHX)	2003	coro_waitarray_new (pTHX_ int count)
1832	{	2004	{
1833	dSP;	2005	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2006	AV *av = newAV ();
		2007	SV **ary;
1834		2008
1835	PUSHMARK (SP);	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);
1836		2016
1837	EXTEND (SP, 3);	2017	return newRV_noinc ((SV *)av);
1838	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841	PUSHs ((SV *)CvGV (slf_cv));
1842
1843	RETURNOP (slf_restore.op_first);
1844	}	2018	}
1845		2019
		2020	/* semaphore */
		2021
		2022	static void
		2023	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
		2024	{
		2025	SV *count_sv = AvARRAY (av)[0];
		2026	IV count = SvIVX (count_sv);
		2027
		2028	count += adjust;
		2029	SvIVX (count_sv) = count;
		2030
		2031	/* now wake up as many waiters as are expected to lock */
		2032	while (count > 0 && AvFILLp (av) > 0)
		2033	{
		2034	SV *cb;
		2035
		2036	/* swap first two elements so we can shift a waiter */
		2037	AvARRAY (av)[0] = AvARRAY (av)[1];
		2038	AvARRAY (av)[1] = count_sv;
		2039	cb = av_shift (av);
		2040
		2041	if (SvOBJECT (cb))
		2042	api_ready (aTHX_ cb);
		2043	else
		2044	croak ("callbacks not yet supported");
		2045
		2046	SvREFCNT_dec (cb);
		2047
		2048	--count;
		2049	}
		2050	}
		2051
		2052	static void
		2053	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2054	{
		2055	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2056	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2057	}
		2058
1846	static void	2059	static int
1847	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	2060	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1848	{	2061	{
1849	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);	2062	AV av = (AV )frame->data;
1850	}	2063	SV *count_sv = AvARRAY (av)[0];
1851		2064
		2065	/* if we are about to throw, don't actually acquire the lock, just throw */
		2066	if (CORO_THROW)
		2067	return 0;
		2068	else if (SvIVX (count_sv) > 0)
		2069	{
		2070	SvSTATE_current->on_destroy = 0;
		2071
		2072	if (acquire)
		2073	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2074	else
		2075	coro_semaphore_adjust (aTHX_ av, 0);
		2076
		2077	return 0;
		2078	}
		2079	else
		2080	{
		2081	int i;
		2082	/* if we were woken up but can't down, we look through the whole */
		2083	/* waiters list and only add us if we aren't in there already */
		2084	/* this avoids some degenerate memory usage cases */
		2085
		2086	for (i = 1; i <= AvFILLp (av); ++i)
		2087	if (AvARRAY (av)[i] == SvRV (coro_current))
		2088	return 1;
		2089
		2090	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2091	return 1;
		2092	}
		2093	}
		2094
1852	static void	2095	static int
1853	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, SV *arg, int items)	2096	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1854	{	2097	{
1855	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));	2098	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
1856
1857	frame->prepare = slf_prepare_set_stacklevel;
1858	frame->check = slf_check_nop;
1859	frame->data = (void *)SvIV (arg [0]);
1860	}	2099	}
1861		2100
1862	static void	2101	static int
1863	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)	2102	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
1864	{	2103	{
1865	SV arg = (SV )slf_frame.data;	2104	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
1866
1867	prepare_transfer (ta, arg [0], arg [1]);
1868	}	2105	}
1869		2106
1870	static void	2107	static void
1871	slf_init_transfer (pTHX_ struct CoroSLF frame, SV *arg, int items)
1872	{
1873	if (items != 2)
1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876	frame->prepare = slf_prepare_transfer;
1877	frame->check = slf_check_nop;
1878	frame->data = (void )arg; / let's hope it will stay valid */
1879	}
1880
1881	static void
1882	slf_init_schedule (pTHX_ struct CoroSLF frame, SV *arg, int items)	2108	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1883	{	2109	{
		2110	AV av = (AV )SvRV (arg [0]);
		2111
		2112	if (SvIVX (AvARRAY (av)[0]) > 0)
		2113	{
		2114	frame->data = (void *)av;
		2115	frame->prepare = prepare_nop;
		2116	}
		2117	else
		2118	{
		2119	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2120
		2121	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
1884	frame->prepare = prepare_schedule;	2122	frame->prepare = prepare_schedule;
		2123
		2124	/* to avoid race conditions when a woken-up coro gets terminated */
		2125	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2126	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2127	}
		2128	}
		2129
		2130	static void
		2131	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2132	{
		2133	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2134	frame->check = slf_check_semaphore_down;
		2135	}
		2136
		2137	static void
		2138	slf_init_semaphore_wait (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2139	{
		2140	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2141	frame->check = slf_check_semaphore_wait;
		2142	}
		2143
		2144	/* signal */
		2145
		2146	static void
		2147	coro_signal_wake (pTHX_ AV *av, int count)
		2148	{
		2149	SvIVX (AvARRAY (av)[0]) = 0;
		2150
		2151	/* now signal count waiters */
		2152	while (count > 0 && AvFILLp (av) > 0)
		2153	{
		2154	SV *cb;
		2155
		2156	/* swap first two elements so we can shift a waiter */
		2157	cb = AvARRAY (av)[0];
		2158	AvARRAY (av)[0] = AvARRAY (av)[1];
		2159	AvARRAY (av)[1] = cb;
		2160
		2161	cb = av_shift (av);
		2162
		2163	api_ready (aTHX_ cb);
		2164	sv_setiv (cb, 0); /* signal waiter */
		2165	SvREFCNT_dec (cb);
		2166
		2167	--count;
		2168	}
		2169	}
		2170
		2171	static int
		2172	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2173	{
		2174	/* if we are about to throw, also stop waiting */
		2175	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2176	}
		2177
		2178	static void
		2179	slf_init_signal_wait (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2180	{
		2181	AV av = (AV )SvRV (arg [0]);
		2182
		2183	if (SvIVX (AvARRAY (av)[0]))
		2184	{
		2185	SvIVX (AvARRAY (av)[0]) = 0;
		2186	frame->prepare = prepare_nop;
1885	frame->check = slf_check_nop;	2187	frame->check = slf_check_nop;
1886	}	2188	}
		2189	else
		2190	{
		2191	SV waiter = newRV_inc (SvRV (coro_current)); / owned by signal av */
1887		2192
1888	static void	2193	av_push (av, waiter);
1889	slf_init_cede (pTHX_ struct CoroSLF frame, SV *arg, int items)	2194
1890	{	2195	frame->data = (void )sv_2mortal (SvREFCNT_inc_NN (waiter)); / owned by process */
1891	frame->prepare = prepare_cede;	2196	frame->prepare = prepare_schedule;
1892	frame->check = slf_check_nop;	2197	frame->check = slf_check_signal_wait;
		2198	}
1893	}	2199	}
1894		2200
1895	static void	2201	/*****************************************************************************/
1896	slf_init_cede_notself (pTHX_ struct CoroSLF frame, SV *arg, int items)	2202	/* gensub: simple closure generation utility */
1897	{
1898	frame->prepare = prepare_cede_notself;
1899	frame->check = slf_check_nop;
1900	}
1901		2203
1902	/* we hijack an hopefully unused CV flag for our purposes */	2204	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1903	#define CVf_SLF 0x4000
1904		2205
1905	/*	2206	/* create a closure from XS, returns a code reference */
1906	* these not obviously related functions are all rolled into one	2207	/* the arg can be accessed via GENSUB_ARG from the callback */
1907	* function to increase chances that they all will call transfer with the same	2208	/* the callback must use dXSARGS/XSRETURN */
1908	* stack offset
1909	* SLF stands for "schedule-like-function".
1910	*/
1911	static OP *	2209	static SV *
1912	pp_slf (pTHX)	2210	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
1913	{	2211	{
1914	I32 checkmark; /* mark SP to see how many elements check has pushed */	2212	CV cv = (CV )newSV (0);
1915		2213
1916	/* set up the slf frame, unless it has already been set-up */	2214	sv_upgrade ((SV *)cv, SVt_PVCV);
1917	/* the latter happens when a new coro has been started */	2215
1918	/* or when a new cctx was attached to an existing coroutine */	2216	CvANON_on (cv);
1919	if (expect_true (!slf_frame.prepare))	2217	CvISXSUB_on (cv);
		2218	CvXSUB (cv) = xsub;
		2219	GENSUB_ARG = arg;
		2220
		2221	return newRV_noinc ((SV *)cv);
		2222	}
		2223
		2224	/*****************************************************************************/
		2225	/* Coro::AIO */
		2226
		2227	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2228
		2229	/* helper storage struct */
		2230	struct io_state
		2231	{
		2232	int errorno;
		2233	I32 laststype; /* U16 in 5.10.0 */
		2234	int laststatval;
		2235	Stat_t statcache;
		2236	};
		2237
		2238	static void
		2239	coro_aio_callback (pTHX_ CV *cv)
		2240	{
		2241	dXSARGS;
		2242	AV state = (AV )GENSUB_ARG;
		2243	SV *coro = av_pop (state);
		2244	SV *data_sv = newSV (sizeof (struct io_state));
		2245
		2246	av_extend (state, items);
		2247
		2248	sv_upgrade (data_sv, SVt_PV);
		2249	SvCUR_set (data_sv, sizeof (struct io_state));
		2250	SvPOK_only (data_sv);
		2251
1920	{	2252	{
1921	/* first iteration */	2253	struct io_state data = (struct io_state )SvPVX (data_sv);
1922	dSP;
1923	SV **arg = PL_stack_base + TOPMARK + 1;
1924	int items = SP - arg; /* args without function object */
1925	SV gv = sp;
1926		2254
1927	/* do a quick consistency check on the "function" object, and if it isn't */	2255	data->errorno = errno;
1928	/* for us, divert to the real entersub */	2256	data->laststype = PL_laststype;
1929	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))	2257	data->laststatval = PL_laststatval;
1930	return PL_ppaddr[OP_ENTERSUB](aTHX);	2258	data->statcache = PL_statcache;
1931
1932	/* pop args */
1933	SP = PL_stack_base + POPMARK;
1934
1935	if (!(PL_op->op_flags & OPf_STACKED))
1936	{
1937	/* ampersand-form of call, use @_ instead of stack */
1938	AV *av = GvAV (PL_defgv);
1939	arg = AvARRAY (av);
1940	items = AvFILLp (av) + 1;
1941	}
1942
1943	PUTBACK;
1944
1945	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946	}	2259	}
1947		2260
1948	/* now interpret the slf_frame */	2261	/* now build the result vector out of all the parameters and the data_sv */
1949	/* we use a callback system not to make the code needlessly */
1950	/* complicated, but so we can run multiple perl coros from one cctx */
1951
1952	do
1953	{	2262	{
1954	struct coro_transfer_args ta;	2263	int i;
1955		2264
1956	slf_frame.prepare (aTHX_ &ta);	2265	for (i = 0; i < items; ++i)
1957	TRANSFER (ta, 0);	2266	av_push (state, SvREFCNT_inc_NN (ST (i)));
1958
1959	checkmark = PL_stack_sp - PL_stack_base;
1960	}	2267	}
1961	while (slf_frame.check (aTHX_ &slf_frame));
1962		2268
		2269	av_push (state, data_sv);
		2270
		2271	api_ready (aTHX_ coro);
		2272	SvREFCNT_dec (coro);
		2273	SvREFCNT_dec ((AV *)state);
		2274	}
		2275
		2276	static int
		2277	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2278	{
		2279	AV state = (AV )frame->data;
		2280
		2281	/* if we are about to throw, return early */
		2282	/* this does not cancel the aio request, but at least */
		2283	/* it quickly returns */
		2284	if (CORO_THROW)
		2285	return 0;
		2286
		2287	/* one element that is an RV? repeat! */
		2288	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2289	return 1;
		2290
		2291	/* restore status */
		2292	{
		2293	SV *data_sv = av_pop (state);
		2294	struct io_state data = (struct io_state )SvPVX (data_sv);
		2295
		2296	errno = data->errorno;
		2297	PL_laststype = data->laststype;
		2298	PL_laststatval = data->laststatval;
		2299	PL_statcache = data->statcache;
		2300
		2301	SvREFCNT_dec (data_sv);
		2302	}
		2303
		2304	/* push result values */
1963	{	2305	{
1964	dSP;	2306	dSP;
1965	SV **bot = PL_stack_base + checkmark;	2307	int i;
1966	int gimme = GIMME_V;
1967		2308
1968	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */	2309	EXTEND (SP, AvFILLp (state) + 1);
1969		2310	for (i = 0; i <= AvFILLp (state); ++i)
1970	/* make sure we put something on the stack in scalar context */	2311	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1971	if (gimme == G_SCALAR)
1972	{
1973	if (sp == bot)
1974	XPUSHs (&PL_sv_undef);
1975
1976	SP = bot + 1;
1977	}
1978		2312
1979	PUTBACK;	2313	PUTBACK;
1980	}	2314	}
1981		2315
1982	return NORMAL;	2316	return 0;
1983	}	2317	}
1984		2318
1985	static void	2319	static void
1986	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)	2320	slf_init_aio_req (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1987	{	2321	{
1988	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));	2322	AV state = (AV )sv_2mortal ((SV *)newAV ());
		2323	SV *coro_hv = SvRV (coro_current);
		2324	struct coro *coro = SvSTATE_hv (coro_hv);
1989		2325
1990	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]	2326	/* put our coroutine id on the state arg */
1991	&& PL_op->op_ppaddr != pp_slf)	2327	av_push (state, SvREFCNT_inc_NN (coro_hv));
1992	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or other means, caught");
1993		2328
1994	if (items > 3)	2329	/* first see whether we have a non-zero priority and set it as AIO prio */
1995	croak ("Coro only supports up to three arguments to SLF functions currently, caught");	2330	if (coro->prio)
		2331	{
		2332	dSP;
1996		2333
1997	CvFLAGS (cv) \|= CVf_SLF;	2334	static SV *prio_cv;
1998	CvXSUBANY (cv).any_ptr = (void *)init_cb;	2335	static SV *prio_sv;
1999	slf_cv = cv;
2000		2336
2001	/* we patch the op, and then re-run the whole call */	2337	if (expect_false (!prio_cv))
2002	/* we have to put the same argument on the stack for this to work */	2338	{
2003	/* and this will be done by pp_restore */	2339	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004	slf_restore.op_next = (OP *)&slf_restore;	2340	prio_sv = newSViv (0);
2005	slf_restore.op_type = OP_NULL;	2341	}
2006	slf_restore.op_ppaddr = pp_restore;
2007	slf_restore.op_first = PL_op;
2008		2342
2009	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;	2343	PUSHMARK (SP);
2010	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;	2344	sv_setiv (prio_sv, coro->prio);
2011	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;	2345	XPUSHs (prio_sv);
2012		2346
2013	PL_op->op_ppaddr = pp_slf;	2347	PUTBACK;
		2348	call_sv (prio_cv, G_VOID \| G_DISCARD);
		2349	}
2014		2350
2015	PL_op = (OP *)&slf_restore;	2351	/* now call the original request */
		2352	{
		2353	dSP;
		2354	CV req = (CV )CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2355	int i;
		2356
		2357	PUSHMARK (SP);
		2358
		2359	/* first push all args to the stack */
		2360	EXTEND (SP, items + 1);
		2361
		2362	for (i = 0; i < items; ++i)
		2363	PUSHs (arg [i]);
		2364
		2365	/* now push the callback closure */
		2366	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void )SvREFCNT_inc_NN ((SV )state))));
		2367
		2368	/* now call the AIO function - we assume our request is uncancelable */
		2369	PUTBACK;
		2370	call_sv ((SV *)req, G_VOID \| G_DISCARD);
		2371	}
		2372
		2373	/* now that the requets is going, we loop toll we have a result */
		2374	frame->data = (void *)state;
		2375	frame->prepare = prepare_schedule;
		2376	frame->check = slf_check_aio_req;
2016	}	2377	}
		2378
		2379	static void
		2380	coro_aio_req_xs (pTHX_ CV *cv)
		2381	{
		2382	dXSARGS;
		2383
		2384	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2385
		2386	XSRETURN_EMPTY;
		2387	}
		2388
		2389	/*****************************************************************************/
2017		2390
2018	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2391	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019		2392
2020	PROTOTYPES: DISABLE	2393	PROTOTYPES: DISABLE
2021		2394
2022	BOOT:	2395	BOOT:
2023	{	2396	{
2024	#ifdef USE_ITHREADS	2397	#ifdef USE_ITHREADS
2025	MUTEX_INIT (&coro_lock);
2026	# if CORO_PTHREAD	2398	# if CORO_PTHREAD
2027	coro_thx = PERL_GET_CONTEXT;	2399	coro_thx = PERL_GET_CONTEXT;
2028	# endif	2400	# endif
2029	#endif	2401	#endif
2030	BOOT_PAGESIZE;	2402	BOOT_PAGESIZE;
…		…
2050	main_mainstack = PL_mainstack;	2422	main_mainstack = PL_mainstack;
2051	main_top_env = PL_top_env;	2423	main_top_env = PL_top_env;
2052		2424
2053	while (main_top_env->je_prev)	2425	while (main_top_env->je_prev)
2054	main_top_env = main_top_env->je_prev;	2426	main_top_env = main_top_env->je_prev;
		2427
		2428	{
		2429	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2430
		2431	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2432	hv_store_ent (PL_custom_op_names, slf,
		2433	newSVpv ("coro_slf", 0), 0);
		2434
		2435	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2436	hv_store_ent (PL_custom_op_descs, slf,
		2437	newSVpv ("coro schedule like function", 0), 0);
		2438	}
2055		2439
2056	coroapi.ver = CORO_API_VERSION;	2440	coroapi.ver = CORO_API_VERSION;
2057	coroapi.rev = CORO_API_REVISION;	2441	coroapi.rev = CORO_API_REVISION;
2058		2442
2059	coroapi.transfer = api_transfer;	2443	coroapi.transfer = api_transfer;
…		…
2105	}	2489	}
2106	OUTPUT:	2490	OUTPUT:
2107	RETVAL	2491	RETVAL
2108		2492
2109	void	2493	void
2110	_set_stacklevel (...)	2494	transfer (...)
		2495	PROTOTYPE: $$
2111	CODE:	2496	CODE:
2112	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);	2497	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2113
2114	void
2115	transfer (...)
2116	CODE:
2117	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2118		2498
2119	bool	2499	bool
2120	_destroy (SV *coro_sv)	2500	_destroy (SV *coro_sv)
2121	CODE:	2501	CODE:
2122	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2502	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2129	CODE:	2509	CODE:
2130	_exit (code);	2510	_exit (code);
2131		2511
2132	int	2512	int
2133	cctx_stacksize (int new_stacksize = 0)	2513	cctx_stacksize (int new_stacksize = 0)
		2514	PROTOTYPE: ;$
2134	CODE:	2515	CODE:
2135	RETVAL = cctx_stacksize;	2516	RETVAL = cctx_stacksize;
2136	if (new_stacksize)	2517	if (new_stacksize)
2137	{	2518	{
2138	cctx_stacksize = new_stacksize;	2519	cctx_stacksize = new_stacksize;
…		…
2141	OUTPUT:	2522	OUTPUT:
2142	RETVAL	2523	RETVAL
2143		2524
2144	int	2525	int
2145	cctx_max_idle (int max_idle = 0)	2526	cctx_max_idle (int max_idle = 0)
		2527	PROTOTYPE: ;$
2146	CODE:	2528	CODE:
2147	RETVAL = cctx_max_idle;	2529	RETVAL = cctx_max_idle;
2148	if (max_idle > 1)	2530	if (max_idle > 1)
2149	cctx_max_idle = max_idle;	2531	cctx_max_idle = max_idle;
2150	OUTPUT:	2532	OUTPUT:
2151	RETVAL	2533	RETVAL
2152		2534
2153	int	2535	int
2154	cctx_count ()	2536	cctx_count ()
		2537	PROTOTYPE:
2155	CODE:	2538	CODE:
2156	RETVAL = cctx_count;	2539	RETVAL = cctx_count;
2157	OUTPUT:	2540	OUTPUT:
2158	RETVAL	2541	RETVAL
2159		2542
2160	int	2543	int
2161	cctx_idle ()	2544	cctx_idle ()
		2545	PROTOTYPE:
2162	CODE:	2546	CODE:
2163	RETVAL = cctx_idle;	2547	RETVAL = cctx_idle;
2164	OUTPUT:	2548	OUTPUT:
2165	RETVAL	2549	RETVAL
2166		2550
2167	void	2551	void
2168	list ()	2552	list ()
		2553	PROTOTYPE:
2169	PPCODE:	2554	PPCODE:
2170	{	2555	{
2171	struct coro *coro;	2556	struct coro *coro;
2172	for (coro = coro_first; coro; coro = coro->next)	2557	for (coro = coro_first; coro; coro = coro->next)
2173	if (coro->hv)	2558	if (coro->hv)
…		…
2235		2620
2236	void	2621	void
2237	throw (Coro::State self, SV *throw = &PL_sv_undef)	2622	throw (Coro::State self, SV *throw = &PL_sv_undef)
2238	PROTOTYPE: $;$	2623	PROTOTYPE: $;$
2239	CODE:	2624	CODE:
		2625	{
		2626	struct coro *current = SvSTATE_current;
		2627	SV **throwp = self == current ? &CORO_THROW : &self->except;
2240	SvREFCNT_dec (self->throw);	2628	SvREFCNT_dec (*throwp);
2241	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2629	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2630	}
2242		2631
2243	void	2632	void
2244	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2633	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2634	PROTOTYPE: $;$
2245	C_ARGS: aTHX_ coro, flags	2635	C_ARGS: aTHX_ coro, flags
2246		2636
2247	SV *	2637	SV *
2248	has_cctx (Coro::State coro)	2638	has_cctx (Coro::State coro)
2249	PROTOTYPE: $	2639	PROTOTYPE: $
…		…
2274	OUTPUT:	2664	OUTPUT:
2275	RETVAL	2665	RETVAL
2276		2666
2277	void	2667	void
2278	force_cctx ()	2668	force_cctx ()
		2669	PROTOTYPE:
2279	CODE:	2670	CODE:
2280	struct coro *coro = SvSTATE (coro_current);
2281	coro->cctx->idle_sp = 0;	2671	SvSTATE_current->cctx->idle_sp = 0;
2282		2672
2283	void	2673	void
2284	swap_defsv (Coro::State self)	2674	swap_defsv (Coro::State self)
2285	PROTOTYPE: $	2675	PROTOTYPE: $
2286	ALIAS:	2676	ALIAS:
…		…
2294	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2684	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2295		2685
2296	SV tmp = src; src = dst; *dst = tmp;	2686	SV tmp = src; src = dst; *dst = tmp;
2297	}	2687	}
2298		2688
		2689
2299	MODULE = Coro::State PACKAGE = Coro	2690	MODULE = Coro::State PACKAGE = Coro
2300		2691
2301	BOOT:	2692	BOOT:
2302	{	2693	{
2303	int i;	2694	int i;
…		…
2330	coroapi.ready = api_ready;	2721	coroapi.ready = api_ready;
2331	coroapi.is_ready = api_is_ready;	2722	coroapi.is_ready = api_is_ready;
2332	coroapi.nready = coro_nready;	2723	coroapi.nready = coro_nready;
2333	coroapi.current = coro_current;	2724	coroapi.current = coro_current;
2334		2725
2335	GCoroAPI = &coroapi;	2726	/GCoroAPI = &coroapi;/
2336	sv_setiv (sv, (IV)&coroapi);	2727	sv_setiv (sv, (IV)&coroapi);
2337	SvREADONLY_on (sv);	2728	SvREADONLY_on (sv);
2338	}	2729	}
2339	}	2730	}
2340		2731
2341	void	2732	void
2342	schedule (...)	2733	schedule (...)
2343	CODE:	2734	CODE:
2344	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items);	2735	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2345		2736
2346	void	2737	void
2347	cede (...)	2738	cede (...)
2348	CODE:	2739	CODE:
2349	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items);	2740	CORO_EXECUTE_SLF_XS (slf_init_cede);
2350		2741
2351	void	2742	void
2352	cede_notself (...)	2743	cede_notself (...)
2353	CODE:	2744	CODE:
2354	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items);	2745	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2355		2746
2356	void	2747	void
2357	_set_current (SV *current)	2748	_set_current (SV *current)
2358	PROTOTYPE: $	2749	PROTOTYPE: $
2359	CODE:	2750	CODE:
…		…
2362		2753
2363	void	2754	void
2364	_set_readyhook (SV *hook)	2755	_set_readyhook (SV *hook)
2365	PROTOTYPE: $	2756	PROTOTYPE: $
2366	CODE:	2757	CODE:
2367	LOCK;
2368	SvREFCNT_dec (coro_readyhook);	2758	SvREFCNT_dec (coro_readyhook);
2369	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2759	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370	UNLOCK;
2371		2760
2372	int	2761	int
2373	prio (Coro::State coro, int newprio = 0)	2762	prio (Coro::State coro, int newprio = 0)
		2763	PROTOTYPE: $;$
2374	ALIAS:	2764	ALIAS:
2375	nice = 1	2765	nice = 1
2376	CODE:	2766	CODE:
2377	{	2767	{
2378	RETVAL = coro->prio;	2768	RETVAL = coro->prio;
…		…
2410	# for async_pool speedup	2800	# for async_pool speedup
2411	void	2801	void
2412	_pool_1 (SV *cb)	2802	_pool_1 (SV *cb)
2413	CODE:	2803	CODE:
2414	{	2804	{
2415	struct coro *coro = SvSTATE (coro_current);
2416	HV hv = (HV )SvRV (coro_current);	2805	HV hv = (HV )SvRV (coro_current);
		2806	struct coro coro = SvSTATE_hv ((SV )hv);
2417	AV *defav = GvAV (PL_defgv);	2807	AV *defav = GvAV (PL_defgv);
2418	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2808	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419	AV *invoke_av;	2809	AV *invoke_av;
2420	int i, len;	2810	int i, len;
2421		2811
…		…
2442	{	2832	{
2443	av_fill (defav, len - 1);	2833	av_fill (defav, len - 1);
2444	for (i = 0; i < len; ++i)	2834	for (i = 0; i < len; ++i)
2445	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2835	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2446	}	2836	}
2447
2448	SvREFCNT_dec (invoke);
2449	}	2837	}
2450		2838
2451	void	2839	void
2452	_pool_2 (SV *cb)	2840	_pool_2 (SV *cb)
2453	CODE:	2841	CODE:
2454	{	2842	{
2455	struct coro *coro = SvSTATE (coro_current);	2843	HV hv = (HV )SvRV (coro_current);
		2844	struct coro coro = SvSTATE_hv ((SV )hv);
2456		2845
2457	sv_setsv (cb, &PL_sv_undef);	2846	sv_setsv (cb, &PL_sv_undef);
2458		2847
2459	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2848	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2460	coro->saved_deffh = 0;	2849	coro->saved_deffh = 0;
…		…
2467	SvREFCNT_dec (old);	2856	SvREFCNT_dec (old);
2468	croak ("\3async_pool terminate\2\n");	2857	croak ("\3async_pool terminate\2\n");
2469	}	2858	}
2470		2859
2471	av_clear (GvAV (PL_defgv));	2860	av_clear (GvAV (PL_defgv));
2472	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2861	hv_store (hv, "desc", sizeof ("desc") - 1,
2473	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2862	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474		2863
2475	coro->prio = 0;	2864	coro->prio = 0;
2476		2865
2477	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2866	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478	api_trace (aTHX_ coro_current, 0);	2867	api_trace (aTHX_ coro_current, 0);
2479		2868
2480	av_push (av_async_pool, newSVsv (coro_current));	2869	av_push (av_async_pool, newSVsv (coro_current));
2481	}	2870	}
2482		2871
2483	#if 0
2484		2872
2485	void	2873	MODULE = Coro::State PACKAGE = PerlIO::cede
2486	_generator_call (...)	2874
2487	PROTOTYPE: @	2875	BOOT:
2488	PPCODE:	2876	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2489	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);	2877
2490	xxxx	2878
2491	abort ();	2879	MODULE = Coro::State PACKAGE = Coro::Semaphore
2492		2880
2493	SV *	2881	SV *
2494	gensub (SV *sub, ...)	2882	new (SV klass, SV count = 0)
2495	PROTOTYPE: &;@	2883	CODE:
2496	CODE:	2884	RETVAL = sv_bless (
2497	{	2885	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2498	struct coro *coro;	2886	GvSTASH (CvGV (cv))
2499	MAGIC *mg;	2887	);
2500	CV *xcv;
2501	CV ncv = (CV )newSV_type (SVt_PVCV);
2502	int i;
2503
2504	CvGV (ncv) = CvGV (cv);
2505	CvFILE (ncv) = CvFILE (cv);
2506
2507	Newz (0, coro, 1, struct coro);
2508	coro->args = newAV ();
2509	coro->flags = CF_NEW;
2510
2511	av_extend (coro->args, items - 1);
2512	for (i = 1; i < items; i++)
2513	av_push (coro->args, newSVsv (ST (i)));
2514
2515	CvISXSUB_on (ncv);
2516	CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520	CvXSUB (ncv) = CvXSUB (xcv);
2521	CvANON_on (ncv);
2522
2523	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2524	RETVAL = newRV_noinc ((SV *)ncv);
2525	}
2526	OUTPUT:	2888	OUTPUT:
2527	RETVAL	2889	RETVAL
2528		2890
2529	#endif	2891	# helper for Coro::Channel
		2892	SV *
		2893	_alloc (int count)
		2894	CODE:
		2895	RETVAL = coro_waitarray_new (aTHX_ count);
		2896	OUTPUT:
		2897	RETVAL
2530		2898
2531		2899	SV *
2532	MODULE = Coro::State PACKAGE = Coro::AIO	2900	count (SV *self)
		2901	CODE:
		2902	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2903	OUTPUT:
		2904	RETVAL
2533		2905
2534	void	2906	void
2535	_get_state (SV *self)	2907	up (SV *self, int adjust = 1)
2536	PPCODE:	2908	ALIAS:
2537	{	2909	adjust = 1
2538	AV *defav = GvAV (PL_defgv);	2910	CODE:
2539	AV *av = newAV ();	2911	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2540	int i;
2541	SV *data_sv = newSV (sizeof (struct io_state));
2542	struct io_state data = (struct io_state )SvPVX (data_sv);
2543	SvCUR_set (data_sv, sizeof (struct io_state));
2544	SvPOK_only (data_sv);
2545
2546	data->errorno = errno;
2547	data->laststype = PL_laststype;
2548	data->laststatval = PL_laststatval;
2549	data->statcache = PL_statcache;
2550
2551	av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553	for (i = 0; i <= AvFILLp (defav); ++i)
2554	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556	av_push (av, data_sv);
2557
2558	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560	api_ready (aTHX_ self);
2561	}
2562		2912
2563	void	2913	void
2564	_set_state (SV *state)	2914	down (SV *self)
2565	PROTOTYPE: $	2915	CODE:
		2916	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		2917
		2918	void
		2919	wait (SV *self)
		2920	CODE:
		2921	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
		2922
		2923	void
		2924	try (SV *self)
		2925	PPCODE:
		2926	{
		2927	AV av = (AV )SvRV (self);
		2928	SV *count_sv = AvARRAY (av)[0];
		2929	IV count = SvIVX (count_sv);
		2930
		2931	if (count > 0)
		2932	{
		2933	--count;
		2934	SvIVX (count_sv) = count;
		2935	XSRETURN_YES;
		2936	}
		2937	else
		2938	XSRETURN_NO;
		2939	}
		2940
		2941	void
		2942	waiters (SV *self)
		2943	PPCODE:
		2944	{
		2945	AV av = (AV )SvRV (self);
		2946	int wcount = AvFILLp (av) + 1 - 1;
		2947
		2948	if (GIMME_V == G_SCALAR)
		2949	XPUSHs (sv_2mortal (newSViv (wcount)));
		2950	else
		2951	{
		2952	int i;
		2953	EXTEND (SP, wcount);
		2954	for (i = 1; i <= wcount; ++i)
		2955	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
		2956	}
		2957	}
		2958
		2959	MODULE = Coro::State PACKAGE = Coro::Signal
		2960
		2961	SV *
		2962	new (SV *klass)
2566	PPCODE:	2963	CODE:
		2964	RETVAL = sv_bless (
		2965	coro_waitarray_new (aTHX_ 0),
		2966	GvSTASH (CvGV (cv))
		2967	);
		2968	OUTPUT:
		2969	RETVAL
		2970
		2971	void
		2972	wait (SV *self)
		2973	CODE:
		2974	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		2975
		2976	void
		2977	broadcast (SV *self)
		2978	CODE:
2567	{	2979	{
2568	AV av = (AV )SvRV (state);	2980	AV av = (AV )SvRV (self);
2569	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);	2981	coro_signal_wake (aTHX_ av, AvFILLp (av));
2570	int i;	2982	}
2571		2983
2572	errno = data->errorno;	2984	void
2573	PL_laststype = data->laststype;	2985	send (SV *self)
2574	PL_laststatval = data->laststatval;	2986	CODE:
2575	PL_statcache = data->statcache;	2987	{
		2988	AV av = (AV )SvRV (self);
2576		2989
2577	EXTEND (SP, AvFILLp (av));	2990	if (AvFILLp (av))
2578	for (i = 0; i < AvFILLp (av); ++i)	2991	coro_signal_wake (aTHX_ av, 1);
2579	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));	2992	else
		2993	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580	}	2994	}
		2995
		2996	IV
		2997	awaited (SV *self)
		2998	CODE:
		2999	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3000	OUTPUT:
		3001	RETVAL
2581		3002
2582		3003
2583	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3004	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584		3005
2585	BOOT:	3006	BOOT:
2586	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	3007	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587		3008
2588	SV *	3009	void
2589	_schedule (...)	3010	_schedule (...)
2590	PROTOTYPE: @
2591	CODE:	3011	CODE:
2592	{	3012	{
2593	static int incede;	3013	static int incede;
2594		3014
2595	api_cede_notself (aTHX);	3015	api_cede_notself (aTHX);
…		…
2601	sv_setsv (sv_activity, &PL_sv_undef);	3021	sv_setsv (sv_activity, &PL_sv_undef);
2602	if (coro_nready >= incede)	3022	if (coro_nready >= incede)
2603	{	3023	{
2604	PUSHMARK (SP);	3024	PUSHMARK (SP);
2605	PUTBACK;	3025	PUTBACK;
2606	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);	3026	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
2607	SPAGAIN;
2608	}	3027	}
2609		3028
2610	--incede;	3029	--incede;
2611	}	3030	}
2612		3031
2613		3032
2614	MODULE = Coro::State PACKAGE = PerlIO::cede	3033	MODULE = Coro::State PACKAGE = Coro::AIO
2615		3034
2616	BOOT:	3035	void
2617	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3036	_register (char target, char proto, SV *req)
		3037	CODE:
		3038	{
		3039	HV *st;
		3040	GV *gvp;
		3041	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		3042	/* newXSproto doesn't return the CV on 5.8 */
		3043	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3044	sv_setpv ((SV *)slf_cv, proto);
		3045	sv_magicext ((SV )slf_cv, (SV )req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3046	}
2618		3047

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Comparing Coro/Coro/State.xs (file contents): Revision 1.273 by root, Fri Nov 14 23:48:10 2008 UTC vs. Revision 1.301 by root, Wed Nov 19 02:41:31 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.273 by root, Fri Nov 14 23:48:10 2008 UTC vs.
Revision 1.301 by root, Wed Nov 19 02:41:31 2008 UTC