[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 1.280 by root, Sun Nov 16 09:43:18 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
…		…
119	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
120	#endif	117	#endif
121		118
122	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
123	* portable way as possible. */	120	* portable way as possible. */
124	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
125	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel
		125	#endif
126		126
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		128
129	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
130	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
133	#else	133	#else
134	# define attribute(x)	134	# define attribute(x)
135	# define BARRIER
136	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
137	#endif	137	#endif
138		138
139	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
140	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
141		141
142	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
143		143
144	#include "CoroAPI.h"	144	#include "CoroAPI.h"
145		145
146	#ifdef USE_ITHREADS	146	#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	147	# if CORO_PTHREAD
152	static void *coro_thx;	148	static void *coro_thx;
153	# endif	149	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	150	#endif
161
162	# undef LOCK
163	# define LOCK (void)0
164	# undef UNLOCK
165	# define UNLOCK (void)0
166		151
167	/* helper storage struct for Coro::AIO */	152	/* helper storage struct for Coro::AIO */
168	struct io_state	153	struct io_state
169	{	154	{
170	AV *res;	155	AV *res;
…		…
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 */	171	static volatile struct coro *transfer_next;
187		172
188	static GV irsgv; / $/ */	173	static GV irsgv; / $/ */
189	static GV stdoutgv; / STDOUT /	174	static GV stdoutgv; / STDOUT /
190	static SV *rv_diehook;	175	static SV *rv_diehook;
191	static SV *rv_warnhook;	176	static SV *rv_warnhook;
…		…
210	CC_TRACE_LINE = 0x10, /* trace each statement */	195	CC_TRACE_LINE = 0x10, /* trace each statement */
211	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	196	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
212	};	197	};
213		198
214	/* this is a structure representing a c-level coroutine */	199	/* this is a structure representing a c-level coroutine */
215	typedef struct coro_cctx {	200	typedef struct coro_cctx
		201	{
216	struct coro_cctx *next;	202	struct coro_cctx *next;
217		203
218	/* the stack */	204	/* the stack */
219	void *sptr;	205	void *sptr;
220	size_t ssize;	206	size_t ssize;
…		…
238	CF_NEW = 0x0004, /* has never been switched to */	224	CF_NEW = 0x0004, /* has never been switched to */
239	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	225	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
240	};	226	};
241		227
242	/* the structure where most of the perl state is stored, overlaid on the cxstack */	228	/* the structure where most of the perl state is stored, overlaid on the cxstack */
243	typedef struct {	229	typedef struct
		230	{
244	SV *defsv;	231	SV *defsv;
245	AV *defav;	232	AV *defav;
246	SV *errsv;	233	SV *errsv;
247	SV *irsgv;	234	SV *irsgv;
248	#define VAR(name,type) type name;	235	#define VAR(name,type) type name;
…		…
252		239
253	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	240	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
254		241
255	/* this is a structure representing a perl-level coroutine */	242	/* this is a structure representing a perl-level coroutine */
256	struct coro {	243	struct coro {
257	/* the c coroutine allocated to this perl coroutine, if any */	244	/* the C coroutine allocated to this perl coroutine, if any */
258	coro_cctx *cctx;	245	coro_cctx *cctx;
259		246
260	/* process data */	247	/* process data */
		248	struct CoroSLF slf_frame; /* saved slf frame */
261	AV *mainstack;	249	AV *mainstack;
262	perl_slots slot; / basically the saved sp */	250	perl_slots slot; / basically the saved sp */
263		251
264	AV args; / data associated with this coroutine (initial args) */	252	AV args; / data associated with this coroutine (initial args) */
265	int refcnt; /* coroutines are refcounted, yes */	253	int refcnt; /* coroutines are refcounted, yes */
266	int flags; /* CF_ flags */	254	int flags; /* CF_ flags */
267	HV hv; / the perl hash associated with this coro, if any */	255	HV hv; / the perl hash associated with this coro, if any */
		256	void (on_destroy)(pTHX_ struct coro coro);
268		257
269	/* statistics */	258	/* statistics */
270	int usecount; /* number of transfers to this coro */	259	int usecount; /* number of transfers to this coro */
271		260
272	/* coro process data */	261	/* coro process data */
…		…
280	struct coro next, prev;	269	struct coro next, prev;
281	};	270	};
282		271
283	typedef struct coro *Coro__State;	272	typedef struct coro *Coro__State;
284	typedef struct coro *Coro__State_or_hashref;	273	typedef struct coro *Coro__State_or_hashref;
		274
		275	static struct CoroSLF slf_frame; /* the current slf frame */
285		276
286	/ Coro ******************************************************************/	277	/ Coro ******************************************************************/
287		278
288	#define PRIO_MAX 3	279	#define PRIO_MAX 3
289	#define PRIO_HIGH 1	280	#define PRIO_HIGH 1
…		…
294		285
295	/* for Coro.pm */	286	/* for Coro.pm */
296	static SV *coro_current;	287	static SV *coro_current;
297	static SV *coro_readyhook;	288	static SV *coro_readyhook;
298	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	289	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
299	static int coro_nready;
300	static struct coro *coro_first;	290	static struct coro *coro_first;
		291	#define coro_nready coroapi.nready
301		292
302	/ lowlevel stuff ********************************************************/	293	/ lowlevel stuff ********************************************************/
303		294
304	static SV *	295	static SV *
305	coro_get_sv (pTHX_ const char *name, int create)	296	coro_get_sv (pTHX_ const char *name, int create)
…		…
408	: 0	399	: 0
409		400
410	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	401	#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)	402	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
412		403
413	static struct coro *	404	INLINE struct coro *
414	SvSTATE_ (pTHX_ SV *coro)	405	SvSTATE_ (pTHX_ SV *coro)
415	{	406	{
416	HV *stash;	407	HV *stash;
417	MAGIC *mg;	408	MAGIC *mg;
418		409
…		…
509	CvPADLIST (cv) = (AV *)POPs;	500	CvPADLIST (cv) = (AV *)POPs;
510	}	501	}
511		502
512	PUTBACK;	503	PUTBACK;
513	}	504	}
		505
		506	slf_frame = c->slf_frame;
514	}	507	}
515		508
516	static void	509	static void
517	save_perl (pTHX_ Coro__State c)	510	save_perl (pTHX_ Coro__State c)
518	{	511	{
		512	c->slf_frame = slf_frame;
		513
519	{	514	{
520	dSP;	515	dSP;
521	I32 cxix = cxstack_ix;	516	I32 cxix = cxstack_ix;
522	PERL_CONTEXT *ccstk = cxstack;	517	PERL_CONTEXT *ccstk = cxstack;
523	PERL_SI *top_si = PL_curstackinfo;	518	PERL_SI *top_si = PL_curstackinfo;
…		…
590	#undef VAR	585	#undef VAR
591	}	586	}
592	}	587	}
593		588
594	/*	589	/*
595	* allocate various perl stacks. This is an exact copy	590	* allocate various perl stacks. This is almost an exact copy
596	* of perl.c:init_stacks, except that it uses less memory	591	* of perl.c:init_stacks, except that it uses less memory
597	* on the (sometimes correct) assumption that coroutines do	592	* on the (sometimes correct) assumption that coroutines do
598	* not usually need a lot of stackspace.	593	* not usually need a lot of stackspace.
599	*/	594	*/
600	#if CORO_PREFER_PERL_FUNCTIONS	595	#if CORO_PREFER_PERL_FUNCTIONS
…		…
802		797
803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	798	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804	}	799	}
805		800
806	static void	801	static void
		802	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		803	{
		804	/* kind of mega-hacky, but works */
		805	ta->next = ta->prev = (struct coro *)ta;
		806	}
		807
		808	static int
		809	slf_check_nop (pTHX_ struct CoroSLF *frame)
		810	{
		811	return 0;
		812	}
		813
		814	static void
807	coro_setup (pTHX_ struct coro *coro)	815	coro_setup (pTHX_ struct coro *coro)
808	{	816	{
809	/*	817	/*
810	* emulate part of the perl startup here.	818	* emulate part of the perl startup here.
811	*/	819	*/
…		…
835	PL_rs = newSVsv (GvSV (irsgv));	843	PL_rs = newSVsv (GvSV (irsgv));
836	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	844	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
837		845
838	{	846	{
839	dSP;	847	dSP;
840	LOGOP myop;	848	UNOP myop;
841		849
842	Zero (&myop, 1, LOGOP);	850	Zero (&myop, 1, UNOP);
843	myop.op_next = Nullop;	851	myop.op_next = Nullop;
844	myop.op_flags = OPf_WANT_VOID;	852	myop.op_flags = OPf_WANT_VOID;
845		853
846	PUSHMARK (SP);	854	PUSHMARK (SP);
847	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	855	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
850	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	858	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
851	SPAGAIN;	859	SPAGAIN;
852	}	860	}
853		861
854	/* this newly created coroutine might be run on an existing cctx which most	862	/* this newly created coroutine might be run on an existing cctx which most
855	* likely was suspended in set_stacklevel, called from entersub.	863	* 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	*/	864	*/
859	ENTER;	865	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		866	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
860	}	867	}
861		868
862	static void	869	static void
863	coro_destruct (pTHX_ struct coro *coro)	870	coro_destruct (pTHX_ struct coro *coro)
864	{	871	{
…		…
893	SvREFCNT_dec (coro->throw);	900	SvREFCNT_dec (coro->throw);
894		901
895	coro_destruct_stacks (aTHX);	902	coro_destruct_stacks (aTHX);
896	}	903	}
897		904
898	static void	905	INLINE void
899	free_coro_mortal (pTHX)	906	free_coro_mortal (pTHX)
900	{	907	{
901	if (expect_true (coro_mortal))	908	if (expect_true (coro_mortal))
902	{	909	{
903	SvREFCNT_dec (coro_mortal);	910	SvREFCNT_dec (coro_mortal);
…		…
1027		1034
1028	TAINT_NOT;	1035	TAINT_NOT;
1029	return 0;	1036	return 0;
1030	}	1037	}
1031		1038
		1039	static void
		1040	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)
		1041	{
		1042	ta->prev = (struct coro *)cctx;
		1043	ta->next = 0;
		1044	}
		1045
1032	/* inject a fake call to Coro::State::_cctx_init into the execution */	1046	/* inject a fake call to Coro::State::_cctx_init into the execution */
1033	/* _cctx_init should be careful, as it could be called at almost any time */	1047	/* _cctx_init should be careful, as it could be called at almost any time */
1034	/* during execution of a perl program */	1048	/* during execution of a perl program */
1035	/* also initialises PL_top_env */	1049	/* also initialises PL_top_env */
1036	static void NOINLINE	1050	static void NOINLINE
1037	cctx_prepare (pTHX_ coro_cctx *cctx)	1051	cctx_prepare (pTHX_ coro_cctx *cctx)
1038	{	1052	{
1039	dSP;	1053	dSP;
1040	LOGOP myop;	1054	UNOP myop;
1041		1055
1042	PL_top_env = &PL_start_env;	1056	PL_top_env = &PL_start_env;
1043		1057
1044	if (cctx->flags & CC_TRACE)	1058	if (cctx->flags & CC_TRACE)
1045	PL_runops = runops_trace;	1059	PL_runops = runops_trace;
1046		1060
1047	Zero (&myop, 1, LOGOP);	1061	Zero (&myop, 1, UNOP);
1048	myop.op_next = PL_op;	1062	myop.op_next = PL_op;
1049	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1063	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
1050		1064
1051	PUSHMARK (SP);	1065	PUSHMARK (SP);
1052	EXTEND (SP, 2);	1066	EXTEND (SP, 2);
1053	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1067	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1054	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1068	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1055	PUTBACK;	1069	PUTBACK;
1056	PL_op = (OP *)&myop;	1070	PL_op = (OP *)&myop;
1057	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1071	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1058	SPAGAIN;	1072	SPAGAIN;
1059	}	1073	}
1060		1074
1061	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */	1075	/* the tail of transfer: execute stuff we can only do after a transfer */
1062	static void	1076	INLINE void
1063	transfer_tail (void)	1077	transfer_tail (pTHX)
1064	{	1078	{
1065	UNLOCK;	1079	struct coro next = (struct coro )transfer_next;
		1080	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1081	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1066		1082
		1083	free_coro_mortal (aTHX);
		1084
1067	if (expect_false (next_has_throw))	1085	if (expect_false (next->throw))
1068	{	1086	{
1069	struct coro *coro = SvSTATE (coro_current);
1070
1071	if (coro->throw)
1072	{
1073	SV *exception = coro->throw;	1087	SV *exception = sv_2mortal (next->throw);
		1088
1074	coro->throw = 0;	1089	next->throw = 0;
1075	sv_setsv (ERRSV, exception);	1090	sv_setsv (ERRSV, exception);
1076	croak (0);	1091	croak (0);
1077	}
1078	}	1092	}
1079	}	1093	}
1080		1094
1081	/*	1095	/*
1082	* this is a _very_ stripped down perl interpreter ;)	1096	* this is a _very_ stripped down perl interpreter ;)
…		…
1090	# endif	1104	# endif
1091	#endif	1105	#endif
1092	{	1106	{
1093	dTHX;	1107	dTHX;
1094		1108
1095	/* we now skip the entersub that lead to transfer () */	1109	/* normally we would need to skip the entersub here */
		1110	/* not doing so will re-execute it, which is exactly what we want */
1096	PL_op = PL_op->op_next;	1111	/* PL_nop = PL_nop->op_next */
1097		1112
1098	/* inject a fake subroutine call to cctx_init */	1113	/* inject a fake subroutine call to cctx_init */
1099	cctx_prepare (aTHX_ (coro_cctx *)arg);	1114	cctx_prepare (aTHX_ (coro_cctx *)arg);
1100		1115
1101	/* cctx_run is the alternative tail of transfer () */	1116	/* cctx_run is the alternative tail of transfer() */
		1117	/* TODO: throwing an exception here might be deadly, VERIFY */
1102	transfer_tail ();	1118	transfer_tail (aTHX);
1103		1119
1104	/* somebody or something will hit me for both perl_run and PL_restartop */	1120	/* somebody or something will hit me for both perl_run and PL_restartop */
1105	PL_restartop = PL_op;	1121	PL_restartop = PL_op;
1106	perl_run (PL_curinterp);	1122	perl_run (PL_curinterp);
1107		1123
…		…
1125	++cctx_count;	1141	++cctx_count;
1126	New (0, cctx, 1, coro_cctx);	1142	New (0, cctx, 1, coro_cctx);
1127		1143
1128	cctx->gen = cctx_gen;	1144	cctx->gen = cctx_gen;
1129	cctx->flags = 0;	1145	cctx->flags = 0;
1130	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */	1146	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1131		1147
1132	return cctx;	1148	return cctx;
1133	}	1149	}
1134		1150
1135	/* create a new cctx only suitable as source */	1151	/* create a new cctx only suitable as source */
…		…
1157	/* mmap supposedly does allocate-on-write for us */	1173	/* 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);	1174	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
1159		1175
1160	if (cctx->sptr != (void *)-1)	1176	if (cctx->sptr != (void *)-1)
1161	{	1177	{
1162	# if CORO_STACKGUARD	1178	#if CORO_STACKGUARD
1163	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1179	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1164	# endif	1180	#endif
1165	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1181	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1166	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1182	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1167	cctx->flags \|= CC_MAPPED;	1183	cctx->flags \|= CC_MAPPED;
1168	}	1184	}
1169	else	1185	else
1170	#endif	1186	#endif
1171	{	1187	{
1172	cctx->ssize = cctx_stacksize * (long)sizeof (long);	1188	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1173	New (0, cctx->sptr, cctx_stacksize, long);	1189	New (0, cctx->sptr, cctx_stacksize, long);
1174		1190
1175	if (!cctx->sptr)	1191	if (!cctx->sptr)
1176	{	1192	{
1177	perror ("FATAL: unable to allocate stack for coroutine");	1193	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1178	_exit (EXIT_FAILURE);	1194	_exit (EXIT_FAILURE);
1179	}	1195	}
1180		1196
1181	stack_start = cctx->sptr;	1197	stack_start = cctx->sptr;
1182	stack_size = cctx->ssize;	1198	stack_size = cctx->ssize;
1183	}	1199	}
1184		1200
1185	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1201	#if CORO_USE_VALGRIND
		1202	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char )stack_start, (char )stack_start + stack_size);
		1203	#endif
		1204
1186	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1205	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1187		1206
1188	return cctx;	1207	return cctx;
1189	}	1208	}
1190		1209
…		…
1198	coro_destroy (&cctx->cctx);	1217	coro_destroy (&cctx->cctx);
1199		1218
1200	/* coro_transfer creates new, empty cctx's */	1219	/* coro_transfer creates new, empty cctx's */
1201	if (cctx->sptr)	1220	if (cctx->sptr)
1202	{	1221	{
1203	#if CORO_USE_VALGRIND	1222	#if CORO_USE_VALGRIND
1204	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1223	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1205	#endif	1224	#endif
1206		1225
1207	#if HAVE_MMAP	1226	#if HAVE_MMAP
1208	if (cctx->flags & CC_MAPPED)	1227	if (cctx->flags & CC_MAPPED)
1209	munmap (cctx->sptr, cctx->ssize);	1228	munmap (cctx->sptr, cctx->ssize);
1210	else	1229	else
…		…
1237	}	1256	}
1238		1257
1239	static void	1258	static void
1240	cctx_put (coro_cctx *cctx)	1259	cctx_put (coro_cctx *cctx)
1241	{	1260	{
1242	assert (("cctx_put called on non-initialised cctx", cctx->sptr));	1261	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1243		1262
1244	/* free another cctx if overlimit */	1263	/* free another cctx if overlimit */
1245	if (expect_false (cctx_idle >= cctx_max_idle))	1264	if (expect_false (cctx_idle >= cctx_max_idle))
1246	{	1265	{
1247	coro_cctx *first = cctx_first;	1266	coro_cctx *first = cctx_first;
…		…
1262	transfer_check (pTHX_ struct coro prev, struct coro next)	1281	transfer_check (pTHX_ struct coro prev, struct coro next)
1263	{	1282	{
1264	if (expect_true (prev != next))	1283	if (expect_true (prev != next))
1265	{	1284	{
1266	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1285	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");	1286	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1268		1287
1269	if (expect_false (next->flags & CF_RUNNING))	1288	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");	1289	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1271		1290
1272	if (expect_false (next->flags & CF_DESTROYED))	1291	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");	1292	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1274		1293
1275	#if !PERL_VERSION_ATLEAST (5,10,0)	1294	#if !PERL_VERSION_ATLEAST (5,10,0)
1276	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1295	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");	1296	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1278	#endif	1297	#endif
1279	}	1298	}
1280	}	1299	}
1281		1300
1282	/* always use the TRANSFER macro */	1301	/* always use the TRANSFER macro */
…		…
1286	dSTACKLEVEL;	1305	dSTACKLEVEL;
1287		1306
1288	/* sometimes transfer is only called to set idle_sp */	1307	/* sometimes transfer is only called to set idle_sp */
1289	if (expect_false (!next))	1308	if (expect_false (!next))
1290	{	1309	{
1291	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1310	((coro_cctx )prev)->idle_sp = (void )stacklevel;
1292	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1311	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1293	}	1312	}
1294	else if (expect_true (prev != next))	1313	else if (expect_true (prev != next))
1295	{	1314	{
1296	coro_cctx *prev__cctx;	1315	coro_cctx *prev__cctx;
…		…
1303	prev->flags \|= CF_RUNNING;	1322	prev->flags \|= CF_RUNNING;
1304	}	1323	}
1305		1324
1306	prev->flags &= ~CF_RUNNING;	1325	prev->flags &= ~CF_RUNNING;
1307	next->flags \|= CF_RUNNING;	1326	next->flags \|= CF_RUNNING;
1308
1309	LOCK;
1310		1327
1311	/* first get rid of the old state */	1328	/* first get rid of the old state */
1312	save_perl (aTHX_ prev);	1329	save_perl (aTHX_ prev);
1313		1330
1314	if (expect_false (next->flags & CF_NEW))	1331	if (expect_false (next->flags & CF_NEW))
…		…
1321	else	1338	else
1322	load_perl (aTHX_ next);	1339	load_perl (aTHX_ next);
1323		1340
1324	prev__cctx = prev->cctx;	1341	prev__cctx = prev->cctx;
1325		1342
1326	if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
1328	/* possibly "free" the cctx */	1343	/* possibly untie and reuse the cctx */
1329	if (expect_true (	1344	if (expect_true (
1330	prev__cctx->idle_sp == STACKLEVEL	1345	prev__cctx->idle_sp == (void *)stacklevel
1331	&& !(prev__cctx->flags & CC_TRACE)	1346	&& !(prev__cctx->flags & CC_TRACE)
1332	&& !force_cctx	1347	&& !force_cctx
1333	))	1348	))
1334	{	1349	{
1335	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1350	/* 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));	1351	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1337		1352
1338	prev->cctx = 0;	1353	prev->cctx = 0;
1339		1354
1340	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1355	/* 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 */	1356	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1349	++next->usecount;	1364	++next->usecount;
1350		1365
1351	if (expect_true (!next->cctx))	1366	if (expect_true (!next->cctx))
1352	next->cctx = cctx_get (aTHX);	1367	next->cctx = cctx_get (aTHX);
1353		1368
1354	next_has_throw = !!next->throw;	1369	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1370	transfer_next = next;
1355		1371
1356	if (expect_false (prev__cctx != next->cctx))	1372	if (expect_false (prev__cctx != next->cctx))
1357	{	1373	{
1358	prev__cctx->top_env = PL_top_env;	1374	prev__cctx->top_env = PL_top_env;
1359	PL_top_env = next->cctx->top_env;	1375	PL_top_env = next->cctx->top_env;
1360	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1376	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1361	}	1377	}
1362		1378
1363	free_coro_mortal (aTHX);
1364	UNLOCK;
1365
1366	transfer_tail ();	1379	transfer_tail (aTHX);
1367	}	1380	}
1368	}	1381	}
1369
1370	struct transfer_args
1371	{
1372	struct coro prev, next;
1373	};
1374		1382
1375	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1383	#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)	1384	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377		1385
1378	/ high level stuff ******************************************************/	1386	/ high level stuff ******************************************************/
…		…
1380	static int	1388	static int
1381	coro_state_destroy (pTHX_ struct coro *coro)	1389	coro_state_destroy (pTHX_ struct coro *coro)
1382	{	1390	{
1383	if (coro->flags & CF_DESTROYED)	1391	if (coro->flags & CF_DESTROYED)
1384	return 0;	1392	return 0;
		1393
		1394	if (coro->on_destroy)
		1395	coro->on_destroy (aTHX_ coro);
1385		1396
1386	coro->flags \|= CF_DESTROYED;	1397	coro->flags \|= CF_DESTROYED;
1387		1398
1388	if (coro->flags & CF_READY)	1399	if (coro->flags & CF_READY)
1389	{	1400	{
1390	/* reduce nready, as destroying a ready coro effectively unreadies it */	1401	/* reduce nready, as destroying a ready coro effectively unreadies it */
1391	/* alternative: look through all ready queues and remove the coro */	1402	/* alternative: look through all ready queues and remove the coro */
1392	LOCK;
1393	--coro_nready;	1403	--coro_nready;
1394	UNLOCK;
1395	}	1404	}
1396	else	1405	else
1397	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1406	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
1398		1407
1399	if (coro->mainstack && coro->mainstack != main_mainstack)	1408	if (coro->mainstack && coro->mainstack != main_mainstack)
1400	{	1409	{
1401	struct coro temp;	1410	struct coro temp;
1402		1411
1403	if (coro->flags & CF_RUNNING)	1412	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1404	croak ("FATAL: tried to destroy currently running coroutine");
1405		1413
1406	save_perl (aTHX_ &temp);	1414	save_perl (aTHX_ &temp);
1407	load_perl (aTHX_ coro);	1415	load_perl (aTHX_ coro);
1408		1416
1409	coro_destruct (aTHX_ coro);	1417	coro_destruct (aTHX_ coro);
…		…
1460	# define MGf_DUP 0	1468	# define MGf_DUP 0
1461	#endif	1469	#endif
1462	};	1470	};
1463		1471
1464	static void	1472	static void
1465	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1473	prepare_transfer (pTHX_ struct coro_transfer_args ta, SV prev_sv, SV *next_sv)
1466	{	1474	{
1467	ta->prev = SvSTATE (prev_sv);	1475	ta->prev = SvSTATE (prev_sv);
1468	ta->next = SvSTATE (next_sv);	1476	ta->next = SvSTATE (next_sv);
1469	TRANSFER_CHECK (*ta);	1477	TRANSFER_CHECK (*ta);
1470	}	1478	}
1471		1479
1472	static void	1480	static void
1473	api_transfer (SV prev_sv, SV next_sv)	1481	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1474	{	1482	{
1475	dTHX;
1476	struct transfer_args ta;	1483	struct coro_transfer_args ta;
1477		1484
1478	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1485	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1479	TRANSFER (ta, 1);	1486	TRANSFER (ta, 1);
1480	}	1487	}
1481		1488
…		…
1498		1505
1499	return 0;	1506	return 0;
1500	}	1507	}
1501		1508
1502	static int	1509	static int
1503	api_ready (SV *coro_sv)	1510	api_ready (pTHX_ SV *coro_sv)
1504	{	1511	{
1505	dTHX;
1506	struct coro *coro;	1512	struct coro *coro;
1507	SV *sv_hook;	1513	SV *sv_hook;
1508	void (*xs_hook)(void);	1514	void (*xs_hook)(void);
1509		1515
1510	if (SvROK (coro_sv))	1516	if (SvROK (coro_sv))
…		…
1515	if (coro->flags & CF_READY)	1521	if (coro->flags & CF_READY)
1516	return 0;	1522	return 0;
1517		1523
1518	coro->flags \|= CF_READY;	1524	coro->flags \|= CF_READY;
1519		1525
1520	LOCK;
1521
1522	sv_hook = coro_nready ? 0 : coro_readyhook;	1526	sv_hook = coro_nready ? 0 : coro_readyhook;
1523	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1527	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1524		1528
1525	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1529	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1526	++coro_nready;	1530	++coro_nready;
1527		1531
1528	UNLOCK;
1529
1530	if (sv_hook)	1532	if (sv_hook)
1531	{	1533	{
1532	dSP;	1534	dSP;
1533		1535
1534	ENTER;	1536	ENTER;
…		…
1548		1550
1549	return 1;	1551	return 1;
1550	}	1552	}
1551		1553
1552	static int	1554	static int
1553	api_is_ready (SV *coro_sv)	1555	api_is_ready (pTHX_ SV *coro_sv)
1554	{	1556	{
1555	dTHX;
1556	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1557	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1557	}	1558	}
1558		1559
1559	static void	1560	INLINE void
1560	prepare_schedule (pTHX_ struct transfer_args *ta)	1561	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1561	{	1562	{
1562	SV prev_sv, next_sv;	1563	SV prev_sv, next_sv;
1563		1564
1564	for (;;)	1565	for (;;)
1565	{	1566	{
1566	LOCK;
1567	next_sv = coro_deq (aTHX);	1567	next_sv = coro_deq (aTHX);
1568		1568
1569	/* nothing to schedule: call the idle handler */	1569	/* nothing to schedule: call the idle handler */
1570	if (expect_false (!next_sv))	1570	if (expect_false (!next_sv))
1571	{	1571	{
1572	dSP;	1572	dSP;
1573	UNLOCK;
1574		1573
1575	ENTER;	1574	ENTER;
1576	SAVETMPS;	1575	SAVETMPS;
1577		1576
1578	PUSHMARK (SP);	1577	PUSHMARK (SP);
…		…
1588	ta->next = SvSTATE (next_sv);	1587	ta->next = SvSTATE (next_sv);
1589		1588
1590	/* cannot transfer to destroyed coros, skip and look for next */	1589	/* cannot transfer to destroyed coros, skip and look for next */
1591	if (expect_false (ta->next->flags & CF_DESTROYED))	1590	if (expect_false (ta->next->flags & CF_DESTROYED))
1592	{	1591	{
1593	UNLOCK;
1594	SvREFCNT_dec (next_sv);	1592	SvREFCNT_dec (next_sv);
1595	/* coro_nready is already taken care of by destroy */	1593	/* coro_nready has already been taken care of by destroy */
1596	continue;	1594	continue;
1597	}	1595	}
1598		1596
1599	--coro_nready;	1597	--coro_nready;
1600	UNLOCK;
1601	break;	1598	break;
1602	}	1599	}
1603		1600
1604	/* free this only after the transfer */	1601	/* free this only after the transfer */
1605	prev_sv = SvRV (coro_current);	1602	prev_sv = SvRV (coro_current);
1606	ta->prev = SvSTATE (prev_sv);	1603	ta->prev = SvSTATE (prev_sv);
1607	TRANSFER_CHECK (*ta);	1604	TRANSFER_CHECK (*ta);
1608	assert (ta->next->flags & CF_READY);	1605	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1609	ta->next->flags &= ~CF_READY;	1606	ta->next->flags &= ~CF_READY;
1610	SvRV_set (coro_current, next_sv);	1607	SvRV_set (coro_current, next_sv);
1611		1608
1612	LOCK;
1613	free_coro_mortal (aTHX);	1609	free_coro_mortal (aTHX);
1614	coro_mortal = prev_sv;	1610	coro_mortal = prev_sv;
1615	UNLOCK;
1616	}	1611	}
1617		1612
1618	static void	1613	INLINE void
1619	prepare_cede (pTHX_ struct transfer_args *ta)	1614	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620	{	1615	{
1621	api_ready (coro_current);	1616	api_ready (aTHX_ coro_current);
1622	prepare_schedule (aTHX_ ta);	1617	prepare_schedule (aTHX_ ta);
1623	}	1618	}
1624		1619
		1620	INLINE void
		1621	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1622	{
		1623	SV *prev = SvRV (coro_current);
		1624
		1625	if (coro_nready)
		1626	{
		1627	prepare_schedule (aTHX_ ta);
		1628	api_ready (aTHX_ prev);
		1629	}
		1630	else
		1631	prepare_nop (aTHX_ ta);
		1632	}
		1633
		1634	static void
		1635	api_schedule (pTHX)
		1636	{
		1637	struct coro_transfer_args ta;
		1638
		1639	prepare_schedule (aTHX_ &ta);
		1640	TRANSFER (ta, 1);
		1641	}
		1642
1625	static int	1643	static int
1626	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1644	api_cede (pTHX)
1627	{	1645	{
1628	if (coro_nready)	1646	struct coro_transfer_args ta;
1629	{	1647
1630	SV *prev = SvRV (coro_current);
1631	prepare_schedule (aTHX_ ta);	1648	prepare_cede (aTHX_ &ta);
1632	api_ready (prev);	1649
		1650	if (expect_true (ta.prev != ta.next))
		1651	{
		1652	TRANSFER (ta, 1);
1633	return 1;	1653	return 1;
1634	}	1654	}
1635	else	1655	else
1636	return 0;	1656	return 0;
1637	}	1657	}
1638		1658
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	1659	static int
1650	api_cede (void)	1660	api_cede_notself (pTHX)
1651	{	1661	{
1652	dTHX;	1662	if (coro_nready)
		1663	{
1653	struct transfer_args ta;	1664	struct coro_transfer_args ta;
1654		1665
1655	prepare_cede (aTHX_ &ta);	1666	prepare_cede_notself (aTHX_ &ta);
1656
1657	if (expect_true (ta.prev != ta.next))
1658	{
1659	TRANSFER (ta, 1);	1667	TRANSFER (ta, 1);
1660	return 1;	1668	return 1;
1661	}	1669	}
1662	else	1670	else
1663	return 0;	1671	return 0;
1664	}	1672	}
1665		1673
1666	static int	1674	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)	1675	api_trace (pTHX_ SV *coro_sv, int flags)
1683	{	1676	{
1684	dTHX;
1685	struct coro *coro = SvSTATE (coro_sv);	1677	struct coro *coro = SvSTATE (coro_sv);
1686		1678
1687	if (flags & CC_TRACE)	1679	if (flags & CC_TRACE)
1688	{	1680	{
1689	if (!coro->cctx)	1681	if (!coro->cctx)
1690	coro->cctx = cctx_new_run ();	1682	coro->cctx = cctx_new_run ();
1691	else if (!(coro->cctx->flags & CC_TRACE))	1683	else if (!(coro->cctx->flags & CC_TRACE))
1692	croak ("cannot enable tracing on coroutine with custom stack");	1684	croak ("cannot enable tracing on coroutine with custom stack,");
1693		1685
1694	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1686	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1695	}	1687	}
1696	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1688	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1697	{	1689	{
…		…
1702	else	1694	else
1703	coro->slot->runops = RUNOPS_DEFAULT;	1695	coro->slot->runops = RUNOPS_DEFAULT;
1704	}	1696	}
1705	}	1697	}
1706		1698
1707	#if 0
1708	static int
1709	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1710	{
1711	AV *padlist;
1712	AV av = (AV )mg->mg_obj;
1713
1714	abort ();
1715
1716	return 0;
1717	}
1718
1719	static MGVTBL coro_gensub_vtbl = {
1720	0, 0, 0, 0,
1721	coro_gensub_free
1722	};
1723	#endif
1724
1725	/*****************************************************************************/	1699	/*****************************************************************************/
1726	/* PerlIO::cede */	1700	/* PerlIO::cede */
1727		1701
1728	typedef struct	1702	typedef struct
1729	{	1703	{
…		…
1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1730	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757	double now = nvtime ();	1731	double now = nvtime ();
1758		1732
1759	if (now >= self->next)	1733	if (now >= self->next)
1760	{	1734	{
1761	api_cede ();	1735	api_cede (aTHX);
1762	self->next = now + self->every;	1736	self->next = now + self->every;
1763	}	1737	}
1764		1738
1765	return PerlIOBuf_flush (aTHX_ f);	1739	return PerlIOBuf_flush (aTHX_ f);
1766	}	1740	}
…		…
1795	PerlIOBuf_get_ptr,	1769	PerlIOBuf_get_ptr,
1796	PerlIOBuf_get_cnt,	1770	PerlIOBuf_get_cnt,
1797	PerlIOBuf_set_ptrcnt,	1771	PerlIOBuf_set_ptrcnt,
1798	};	1772	};
1799		1773
		1774	/*****************************************************************************/
		1775
		1776	static const CV slf_cv; / for quick consistency check */
		1777
		1778	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1779	static SV *slf_arg0;
		1780	static SV *slf_arg1;
		1781	static SV *slf_arg2;
		1782
		1783	/* this restores the stack in the case we patched the entersub, to */
		1784	/* recreate the stack frame as perl will on following calls */
		1785	/* since entersub cleared the stack */
		1786	static OP *
		1787	pp_restore (pTHX)
		1788	{
		1789	dSP;
		1790
		1791	PUSHMARK (SP);
		1792
		1793	EXTEND (SP, 3);
		1794	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1795	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1796	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
		1797	PUSHs ((SV *)CvGV (slf_cv));
		1798
		1799	RETURNOP (slf_restore.op_first);
		1800	}
		1801
		1802	static void
		1803	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1804	{
		1805	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1806	}
		1807
		1808	static void
		1809	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1810	{
		1811	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1812
		1813	frame->prepare = slf_prepare_set_stacklevel;
		1814	frame->check = slf_check_nop;
		1815	frame->data = (void *)SvIV (arg [0]);
		1816	}
		1817
		1818	static void
		1819	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1820	{
		1821	SV arg = (SV )slf_frame.data;
		1822
		1823	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1824	}
		1825
		1826	static void
		1827	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1828	{
		1829	if (items != 2)
		1830	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1831
		1832	frame->prepare = slf_prepare_transfer;
		1833	frame->check = slf_check_nop;
		1834	frame->data = (void )arg; / let's hope it will stay valid */
		1835	}
		1836
		1837	static void
		1838	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1839	{
		1840	frame->prepare = prepare_schedule;
		1841	frame->check = slf_check_nop;
		1842	}
		1843
		1844	static void
		1845	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1846	{
		1847	frame->prepare = prepare_cede;
		1848	frame->check = slf_check_nop;
		1849	}
		1850
		1851	static void
		1852	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1853	{
		1854	frame->prepare = prepare_cede_notself;
		1855	frame->check = slf_check_nop;
		1856	}
		1857
		1858	/* we hijack an hopefully unused CV flag for our purposes */
		1859	#define CVf_SLF 0x4000
		1860
		1861	/*
		1862	* these not obviously related functions are all rolled into one
		1863	* function to increase chances that they all will call transfer with the same
		1864	* stack offset
		1865	* SLF stands for "schedule-like-function".
		1866	*/
		1867	static OP *
		1868	pp_slf (pTHX)
		1869	{
		1870	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1871
		1872	/* set up the slf frame, unless it has already been set-up */
		1873	/* the latter happens when a new coro has been started */
		1874	/* or when a new cctx was attached to an existing coroutine */
		1875	if (expect_true (!slf_frame.prepare))
		1876	{
		1877	/* first iteration */
		1878	dSP;
		1879	SV **arg = PL_stack_base + TOPMARK + 1;
		1880	int items = SP - arg; /* args without function object */
		1881	SV gv = sp;
		1882
		1883	/* do a quick consistency check on the "function" object, and if it isn't */
		1884	/* for us, divert to the real entersub */
		1885	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1886	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1887
		1888	/* pop args */
		1889	SP = PL_stack_base + POPMARK;
		1890
		1891	if (!(PL_op->op_flags & OPf_STACKED))
		1892	{
		1893	/* ampersand-form of call, use @_ instead of stack */
		1894	AV *av = GvAV (PL_defgv);
		1895	arg = AvARRAY (av);
		1896	items = AvFILLp (av) + 1;
		1897	}
		1898
		1899	PUTBACK;
		1900
		1901	/* now call the init function, which needs to set up slf_frame */
		1902	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1903	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1904	}
		1905
		1906	/* now that we have a slf_frame, interpret it! */
		1907	/* we use a callback system not to make the code needlessly */
		1908	/* complicated, but so we can run multiple perl coros from one cctx */
		1909
		1910	do
		1911	{
		1912	struct coro_transfer_args ta;
		1913
		1914	slf_frame.prepare (aTHX_ &ta);
		1915	TRANSFER (ta, 0);
		1916
		1917	checkmark = PL_stack_sp - PL_stack_base;
		1918	}
		1919	while (slf_frame.check (aTHX_ &slf_frame));
		1920
		1921	{
		1922	dSP;
		1923	SV **bot = PL_stack_base + checkmark;
		1924	int gimme = GIMME_V;
		1925
		1926	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
		1927
		1928	/* make sure we put something on the stack in scalar context */
		1929	if (gimme == G_SCALAR)
		1930	{
		1931	if (sp == bot)
		1932	XPUSHs (&PL_sv_undef);
		1933
		1934	SP = bot + 1;
		1935	}
		1936
		1937	PUTBACK;
		1938	}
		1939
		1940	return NORMAL;
		1941	}
		1942
		1943	static void
		1944	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
		1945	{
		1946	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1947
		1948	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1949	&& PL_op->op_ppaddr != pp_slf)
		1950	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1951
		1952	if (items > 3)
		1953	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
		1954
		1955	CvFLAGS (cv) \|= CVf_SLF;
		1956	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1957	slf_cv = cv;
		1958
		1959	/* we patch the op, and then re-run the whole call */
		1960	/* we have to put the same argument on the stack for this to work */
		1961	/* and this will be done by pp_restore */
		1962	slf_restore.op_next = (OP *)&slf_restore;
		1963	slf_restore.op_type = OP_CUSTOM;
		1964	slf_restore.op_ppaddr = pp_restore;
		1965	slf_restore.op_first = PL_op;
		1966
		1967	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
		1968	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		1969	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
		1970
		1971	PL_op->op_ppaddr = pp_slf;
		1972
		1973	PL_op = (OP *)&slf_restore;
		1974	}
		1975
		1976	/*****************************************************************************/
		1977
		1978	static void
		1979	coro_semaphore_adjust (AV *av, int adjust)
		1980	{
		1981	SV *count_sv = AvARRAY (av)[0];
		1982	IV count = SvIVX (count_sv);
		1983
		1984	count += adjust;
		1985	SvIVX (count_sv) = count;
		1986
		1987	/* now wake up as many waiters as possible */
		1988	while (count > 0 && AvFILLp (av) >= count)
		1989	{
		1990	SV *cb;
		1991
		1992	/* swap first two elements so we can shift a waiter */
		1993	AvARRAY (av)[0] = AvARRAY (av)[1];
		1994	AvARRAY (av)[1] = count_sv;
		1995	cb = av_shift (av);
		1996
		1997	if (SvOBJECT (cb))
		1998	api_ready (aTHX_ cb);
		1999	else
		2000	croak ("callbacks not yet supported");
		2001
		2002	SvREFCNT_dec (cb);
		2003
		2004	--count;
		2005	}
		2006	}
		2007
		2008	static void
		2009	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2010	{
		2011	/* call $sem->adjust (0) to possibly wake up some waiters */
		2012	coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0);
		2013	}
		2014
		2015	static int
		2016	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2017	{
		2018	AV av = (AV )frame->data;
		2019	SV *count_sv = AvARRAY (av)[0];
		2020
		2021	if (SvIVX (count_sv) > 0)
		2022	{
		2023	SvSTATE (coro_current)->on_destroy = 0;
		2024	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2025	return 0;
		2026	}
		2027	else
		2028	{
		2029	int i;
		2030	/* if we were woken up but can't down, we look through the whole */
		2031	/* waiters list and only add us if we aren't in there already */
		2032	/* this avoids some degenerate memory usage cases */
		2033
		2034	for (i = 1; i <= AvFILLp (av); ++i)
		2035	if (AvARRAY (av)[i] == SvRV (coro_current))
		2036	return 1;
		2037
		2038	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2039	return 1;
		2040	}
		2041	}
		2042
		2043	static void
		2044	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2045	{
		2046	AV av = (AV )SvRV (arg [0]);
		2047
		2048	if (SvIVX (AvARRAY (av)[0]) > 0)
		2049	{
		2050	frame->data = (void *)av;
		2051	frame->prepare = prepare_nop;
		2052	}
		2053	else
		2054	{
		2055	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2056
		2057	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2058	frame->prepare = prepare_schedule;
		2059
		2060	/* to avoid race conditions when a woken-up coro gets terminated */
		2061	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2062	SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy;
		2063	}
		2064
		2065	frame->check = slf_check_semaphore_down;
		2066
		2067	}
		2068
		2069	/*****************************************************************************/
		2070
		2071	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2072
		2073	/* create a closure from XS, returns a code reference */
		2074	/* the arg can be accessed via GENSUB_ARG from the callback */
		2075	/* the callback must use dXSARGS/XSRETURN */
		2076	static SV *
		2077	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
		2078	{
		2079	CV cv = (CV )NEWSV (0, 0);
		2080
		2081	sv_upgrade ((SV *)cv, SVt_PVCV);
		2082
		2083	CvANON_on (cv);
		2084	CvISXSUB_on (cv);
		2085	CvXSUB (cv) = xsub;
		2086	GENSUB_ARG = arg;
		2087
		2088	return newRV_noinc ((SV *)cv);
		2089	}
		2090
		2091	/*****************************************************************************/
1800		2092
1801	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2093	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1802		2094
1803	PROTOTYPES: DISABLE	2095	PROTOTYPES: DISABLE
1804		2096
…		…
1834	main_top_env = PL_top_env;	2126	main_top_env = PL_top_env;
1835		2127
1836	while (main_top_env->je_prev)	2128	while (main_top_env->je_prev)
1837	main_top_env = main_top_env->je_prev;	2129	main_top_env = main_top_env->je_prev;
1838		2130
		2131	{
		2132	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2133
		2134	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2135	hv_store_ent (PL_custom_op_names, slf,
		2136	newSVpv ("coro_slf", 0), 0);
		2137
		2138	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2139	hv_store_ent (PL_custom_op_descs, slf,
		2140	newSVpv ("coro schedule like function", 0), 0);
		2141	}
		2142
1839	coroapi.ver = CORO_API_VERSION;	2143	coroapi.ver = CORO_API_VERSION;
1840	coroapi.rev = CORO_API_REVISION;	2144	coroapi.rev = CORO_API_REVISION;
		2145
1841	coroapi.transfer = api_transfer;	2146	coroapi.transfer = api_transfer;
		2147
		2148	coroapi.sv_state = SvSTATE_;
		2149	coroapi.execute_slf = api_execute_slf;
		2150	coroapi.prepare_nop = prepare_nop;
		2151	coroapi.prepare_schedule = prepare_schedule;
		2152	coroapi.prepare_cede = prepare_cede;
		2153	coroapi.prepare_cede_notself = prepare_cede_notself;
1842		2154
1843	{	2155	{
1844	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2156	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845		2157
1846	if (!svp) croak ("Time::HiRes is required");	2158	if (!svp) croak ("Time::HiRes is required");
…		…
1879	av_push (coro->args, newSVsv (ST (i)));	2191	av_push (coro->args, newSVsv (ST (i)));
1880	}	2192	}
1881	OUTPUT:	2193	OUTPUT:
1882	RETVAL	2194	RETVAL
1883		2195
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	2196	void
1888	_set_stacklevel (...)	2197	_set_stacklevel (...)
1889	ALIAS:	2198	CODE:
1890	Coro::State::transfer = 1	2199	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1891	Coro::schedule = 2
1892	Coro::cede = 3
1893	Coro::cede_notself = 4
1894	CODE:
1895	{
1896	struct transfer_args ta;
1897		2200
1898	PUTBACK;	2201	void
1899	switch (ix)	2202	transfer (...)
1900	{	2203	PROTOTYPE: $$
1901	case 0:	2204	CODE:
1902	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	2205	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
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		2206
1936	bool	2207	bool
1937	_destroy (SV *coro_sv)	2208	_destroy (SV *coro_sv)
1938	CODE:	2209	CODE:
1939	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2210	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1946	CODE:	2217	CODE:
1947	_exit (code);	2218	_exit (code);
1948		2219
1949	int	2220	int
1950	cctx_stacksize (int new_stacksize = 0)	2221	cctx_stacksize (int new_stacksize = 0)
		2222	PROTOTYPE: ;$
1951	CODE:	2223	CODE:
1952	RETVAL = cctx_stacksize;	2224	RETVAL = cctx_stacksize;
1953	if (new_stacksize)	2225	if (new_stacksize)
1954	{	2226	{
1955	cctx_stacksize = new_stacksize;	2227	cctx_stacksize = new_stacksize;
…		…
1958	OUTPUT:	2230	OUTPUT:
1959	RETVAL	2231	RETVAL
1960		2232
1961	int	2233	int
1962	cctx_max_idle (int max_idle = 0)	2234	cctx_max_idle (int max_idle = 0)
		2235	PROTOTYPE: ;$
1963	CODE:	2236	CODE:
1964	RETVAL = cctx_max_idle;	2237	RETVAL = cctx_max_idle;
1965	if (max_idle > 1)	2238	if (max_idle > 1)
1966	cctx_max_idle = max_idle;	2239	cctx_max_idle = max_idle;
1967	OUTPUT:	2240	OUTPUT:
1968	RETVAL	2241	RETVAL
1969		2242
1970	int	2243	int
1971	cctx_count ()	2244	cctx_count ()
		2245	PROTOTYPE:
1972	CODE:	2246	CODE:
1973	RETVAL = cctx_count;	2247	RETVAL = cctx_count;
1974	OUTPUT:	2248	OUTPUT:
1975	RETVAL	2249	RETVAL
1976		2250
1977	int	2251	int
1978	cctx_idle ()	2252	cctx_idle ()
		2253	PROTOTYPE:
1979	CODE:	2254	CODE:
1980	RETVAL = cctx_idle;	2255	RETVAL = cctx_idle;
1981	OUTPUT:	2256	OUTPUT:
1982	RETVAL	2257	RETVAL
1983		2258
1984	void	2259	void
1985	list ()	2260	list ()
		2261	PROTOTYPE:
1986	PPCODE:	2262	PPCODE:
1987	{	2263	{
1988	struct coro *coro;	2264	struct coro *coro;
1989	for (coro = coro_first; coro; coro = coro->next)	2265	for (coro = coro_first; coro; coro = coro->next)
1990	if (coro->hv)	2266	if (coro->hv)
…		…
2049	RETVAL = boolSV (coro->flags & ix);	2325	RETVAL = boolSV (coro->flags & ix);
2050	OUTPUT:	2326	OUTPUT:
2051	RETVAL	2327	RETVAL
2052		2328
2053	void	2329	void
		2330	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2331	PROTOTYPE: $;$
		2332	CODE:
		2333	SvREFCNT_dec (self->throw);
		2334	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2335
		2336	void
2054	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2337	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2338	PROTOTYPE: $;$
		2339	C_ARGS: aTHX_ coro, flags
2055		2340
2056	SV *	2341	SV *
2057	has_cctx (Coro::State coro)	2342	has_cctx (Coro::State coro)
2058	PROTOTYPE: $	2343	PROTOTYPE: $
2059	CODE:	2344	CODE:
…		…
2083	OUTPUT:	2368	OUTPUT:
2084	RETVAL	2369	RETVAL
2085		2370
2086	void	2371	void
2087	force_cctx ()	2372	force_cctx ()
		2373	PROTOTYPE:
2088	CODE:	2374	CODE:
2089	struct coro *coro = SvSTATE (coro_current);	2375	struct coro *coro = SvSTATE (coro_current);
2090	coro->cctx->idle_sp = 0;	2376	coro->cctx->idle_sp = 0;
2091		2377
2092	void	2378	void
…		…
2094	PROTOTYPE: $	2380	PROTOTYPE: $
2095	ALIAS:	2381	ALIAS:
2096	swap_defav = 1	2382	swap_defav = 1
2097	CODE:	2383	CODE:
2098	if (!self->slot)	2384	if (!self->slot)
2099	croak ("cannot swap state with coroutine that has no saved state");	2385	croak ("cannot swap state with coroutine that has no saved state,");
2100	else	2386	else
2101	{	2387	{
2102	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2388	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2103	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2389	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2104		2390
…		…
2129		2415
2130	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2416	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2131	coro_ready[i] = newAV ();	2417	coro_ready[i] = newAV ();
2132		2418
2133	{	2419	{
2134	SV *sv = perl_get_sv ("Coro::API", TRUE);	2420	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2135	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2136		2421
2137	coroapi.schedule = api_schedule;	2422	coroapi.schedule = api_schedule;
2138	coroapi.cede = api_cede;	2423	coroapi.cede = api_cede;
2139	coroapi.cede_notself = api_cede_notself;	2424	coroapi.cede_notself = api_cede_notself;
2140	coroapi.ready = api_ready;	2425	coroapi.ready = api_ready;
2141	coroapi.is_ready = api_is_ready;	2426	coroapi.is_ready = api_is_ready;
2142	coroapi.nready = &coro_nready;	2427	coroapi.nready = coro_nready;
2143	coroapi.current = coro_current;	2428	coroapi.current = coro_current;
2144		2429
2145	GCoroAPI = &coroapi;	2430	GCoroAPI = &coroapi;
2146	sv_setiv (sv, (IV)&coroapi);	2431	sv_setiv (sv, (IV)&coroapi);
2147	SvREADONLY_on (sv);	2432	SvREADONLY_on (sv);
2148	}	2433	}
2149	}	2434	}
		2435
		2436	void
		2437	schedule (...)
		2438	CODE:
		2439	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
		2440
		2441	void
		2442	cede (...)
		2443	CODE:
		2444	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
		2445
		2446	void
		2447	cede_notself (...)
		2448	CODE:
		2449	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
2150		2450
2151	void	2451	void
2152	_set_current (SV *current)	2452	_set_current (SV *current)
2153	PROTOTYPE: $	2453	PROTOTYPE: $
2154	CODE:	2454	CODE:
…		…
2157		2457
2158	void	2458	void
2159	_set_readyhook (SV *hook)	2459	_set_readyhook (SV *hook)
2160	PROTOTYPE: $	2460	PROTOTYPE: $
2161	CODE:	2461	CODE:
2162	LOCK;
2163	SvREFCNT_dec (coro_readyhook);	2462	SvREFCNT_dec (coro_readyhook);
2164	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2463	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2165	UNLOCK;
2166		2464
2167	int	2465	int
2168	prio (Coro::State coro, int newprio = 0)	2466	prio (Coro::State coro, int newprio = 0)
		2467	PROTOTYPE: $;$
2169	ALIAS:	2468	ALIAS:
2170	nice = 1	2469	nice = 1
2171	CODE:	2470	CODE:
2172	{	2471	{
2173	RETVAL = coro->prio;	2472	RETVAL = coro->prio;
…		…
2188		2487
2189	SV *	2488	SV *
2190	ready (SV *self)	2489	ready (SV *self)
2191	PROTOTYPE: $	2490	PROTOTYPE: $
2192	CODE:	2491	CODE:
2193	RETVAL = boolSV (api_ready (self));	2492	RETVAL = boolSV (api_ready (aTHX_ self));
2194	OUTPUT:	2493	OUTPUT:
2195	RETVAL	2494	RETVAL
2196		2495
2197	int	2496	int
2198	nready (...)	2497	nready (...)
…		…
2200	CODE:	2499	CODE:
2201	RETVAL = coro_nready;	2500	RETVAL = coro_nready;
2202	OUTPUT:	2501	OUTPUT:
2203	RETVAL	2502	RETVAL
2204		2503
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	2504	# for async_pool speedup
2213	void	2505	void
2214	_pool_1 (SV *cb)	2506	_pool_1 (SV *cb)
2215	CODE:	2507	CODE:
2216	{	2508	{
…		…
2244	{	2536	{
2245	av_fill (defav, len - 1);	2537	av_fill (defav, len - 1);
2246	for (i = 0; i < len; ++i)	2538	for (i = 0; i < len; ++i)
2247	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2539	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2248	}	2540	}
2249
2250	SvREFCNT_dec (invoke);
2251	}	2541	}
2252		2542
2253	void	2543	void
2254	_pool_2 (SV *cb)	2544	_pool_2 (SV *cb)
2255	CODE:	2545	CODE:
…		…
2275	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2565	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276		2566
2277	coro->prio = 0;	2567	coro->prio = 0;
2278		2568
2279	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2569	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280	api_trace (coro_current, 0);	2570	api_trace (aTHX_ coro_current, 0);
2281		2571
2282	av_push (av_async_pool, newSVsv (coro_current));	2572	av_push (av_async_pool, newSVsv (coro_current));
2283	}	2573	}
2284
2285	#if 0
2286
2287	void
2288	_generator_call (...)
2289	PROTOTYPE: @
2290	PPCODE:
2291	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2292	xxxx
2293	abort ();
2294
2295	SV *
2296	gensub (SV *sub, ...)
2297	PROTOTYPE: &;@
2298	CODE:
2299	{
2300	struct coro *coro;
2301	MAGIC *mg;
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:
2329	RETVAL
2330
2331	#endif
2332		2574
2333		2575
2334	MODULE = Coro::State PACKAGE = Coro::AIO	2576	MODULE = Coro::State PACKAGE = Coro::AIO
2335		2577
2336	void	2578	void
2337	_get_state (SV *self)	2579	_get_state (SV *self)
		2580	PROTOTYPE: $
2338	PPCODE:	2581	PPCODE:
2339	{	2582	{
2340	AV *defav = GvAV (PL_defgv);	2583	AV *defav = GvAV (PL_defgv);
2341	AV *av = newAV ();	2584	AV *av = newAV ();
2342	int i;	2585	int i;
…		…
2357		2600
2358	av_push (av, data_sv);	2601	av_push (av, data_sv);
2359		2602
2360	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2603	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2361		2604
2362	api_ready (self);	2605	api_ready (aTHX_ self);
2363	}	2606	}
2364		2607
2365	void	2608	void
2366	_set_state (SV *state)	2609	_set_state (SV *state)
2367	PROTOTYPE: $	2610	PROTOTYPE: $
…		…
2385	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2628	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2386		2629
2387	BOOT:	2630	BOOT:
2388	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2631	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2389		2632
2390	SV *	2633	void
2391	_schedule (...)	2634	_schedule (...)
2392	PROTOTYPE: @
2393	CODE:	2635	CODE:
2394	{	2636	{
2395	static int incede;	2637	static int incede;
2396		2638
2397	api_cede_notself ();	2639	api_cede_notself (aTHX);
2398		2640
2399	++incede;	2641	++incede;
2400	while (coro_nready >= incede && api_cede ())	2642	while (coro_nready >= incede && api_cede (aTHX))
2401	;	2643	;
2402		2644
2403	sv_setsv (sv_activity, &PL_sv_undef);	2645	sv_setsv (sv_activity, &PL_sv_undef);
2404	if (coro_nready >= incede)	2646	if (coro_nready >= incede)
2405	{	2647	{
…		…
2415		2657
2416	MODULE = Coro::State PACKAGE = PerlIO::cede	2658	MODULE = Coro::State PACKAGE = PerlIO::cede
2417		2659
2418	BOOT:	2660	BOOT:
2419	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2661	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2662
		2663	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2664
		2665	SV *
		2666	new (SV klass, SV count_ = 0)
		2667	CODE:
		2668	{
		2669	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2670	AV *av = newAV ();
		2671	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2672	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2673	}
		2674	OUTPUT:
		2675	RETVAL
		2676
		2677	SV *
		2678	count (SV *self)
		2679	CODE:
		2680	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2681	OUTPUT:
		2682	RETVAL
		2683
		2684	void
		2685	up (SV *self, int adjust = 1)
		2686	ALIAS:
		2687	adjust = 1
		2688	CODE:
		2689	coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1);
		2690
		2691	void
		2692	down (SV *self)
		2693	CODE:
		2694	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
		2695
		2696	void
		2697	try (SV *self)
		2698	PPCODE:
		2699	{
		2700	AV av = (AV )SvRV (self);
		2701	SV *count_sv = AvARRAY (av)[0];
		2702	IV count = SvIVX (count_sv);
		2703
		2704	if (count > 0)
		2705	{
		2706	--count;
		2707	SvIVX (count_sv) = count;
		2708	XSRETURN_YES;
		2709	}
		2710	else
		2711	XSRETURN_NO;
		2712	}
		2713
		2714	void
		2715	waiters (SV *self)
		2716	CODE:
		2717	{
		2718	AV av = (AV )SvRV (self);
		2719
		2720	if (GIMME_V == G_SCALAR)
		2721	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2722	else
		2723	{
		2724	int i;
		2725	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2726	for (i = 1; i <= AvFILLp (av); ++i)
		2727	PUSHs (newSVsv (AvARRAY (av)[i]));
		2728	}
		2729	}
		2730

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs. Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC