[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 1.272 by root, Fri Nov 14 20:35:49 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
…		…
181	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
182	static AV main_mainstack; / used to differentiate between $main and others */	182	static AV main_mainstack; / used to differentiate between $main and others */
183	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
184	static HV coro_state_stash, coro_stash;	184	static HV coro_state_stash, coro_stash;
185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	185	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 */	186	static volatile struct coro *transfer_next;
187		187
188	static GV irsgv; / $/ */	188	static GV irsgv; / $/ */
189	static GV stdoutgv; / STDOUT /	189	static GV stdoutgv; / STDOUT /
190	static SV *rv_diehook;	190	static SV *rv_diehook;
191	static SV *rv_warnhook;	191	static SV *rv_warnhook;
…		…
210	CC_TRACE_LINE = 0x10, /* trace each statement */	210	CC_TRACE_LINE = 0x10, /* trace each statement */
211	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	211	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
212	};	212	};
213		213
214	/* this is a structure representing a c-level coroutine */	214	/* this is a structure representing a c-level coroutine */
215	typedef struct coro_cctx {	215	typedef struct coro_cctx
		216	{
216	struct coro_cctx *next;	217	struct coro_cctx *next;
217		218
218	/* the stack */	219	/* the stack */
219	void *sptr;	220	void *sptr;
220	size_t ssize;	221	size_t ssize;
…		…
238	CF_NEW = 0x0004, /* has never been switched to */	239	CF_NEW = 0x0004, /* has never been switched to */
239	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	240	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
240	};	241	};
241		242
242	/* the structure where most of the perl state is stored, overlaid on the cxstack */	243	/* the structure where most of the perl state is stored, overlaid on the cxstack */
243	typedef struct {	244	typedef struct
		245	{
244	SV *defsv;	246	SV *defsv;
245	AV *defav;	247	AV *defav;
246	SV *errsv;	248	SV *errsv;
247	SV *irsgv;	249	SV *irsgv;
248	#define VAR(name,type) type name;	250	#define VAR(name,type) type name;
…		…
250	#undef VAR	252	#undef VAR
251	} perl_slots;	253	} perl_slots;
252		254
253	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	255	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
254		256
		257	/* this is the per-perl-coro slf frame info */
		258	/* it is treated like other "global" interpreter data */
		259	/* and unfortunately is copied around, so kepe it small */
		260	struct slf_frame
		261	{
		262	void (prepare) (struct coro_transfer_args ta); /* 0 means not yet initialised */
		263	int (*check) (pTHX);
		264	};
		265
255	/* this is a structure representing a perl-level coroutine */	266	/* this is a structure representing a perl-level coroutine */
256	struct coro {	267	struct coro {
257	/* the c coroutine allocated to this perl coroutine, if any */	268	/* the C coroutine allocated to this perl coroutine, if any */
258	coro_cctx *cctx;	269	coro_cctx *cctx;
259		270
260	/* process data */	271	/* process data */
		272	struct slf_frame slf_frame; /* saved slf frame */
		273	void *slf_data;
261	AV *mainstack;	274	AV *mainstack;
262	perl_slots slot; / basically the saved sp */	275	perl_slots slot; / basically the saved sp */
263		276
264	AV args; / data associated with this coroutine (initial args) */	277	AV args; / data associated with this coroutine (initial args) */
265	int refcnt; /* coroutines are refcounted, yes */	278	int refcnt; /* coroutines are refcounted, yes */
…		…
280	struct coro next, prev;	293	struct coro next, prev;
281	};	294	};
282		295
283	typedef struct coro *Coro__State;	296	typedef struct coro *Coro__State;
284	typedef struct coro *Coro__State_or_hashref;	297	typedef struct coro *Coro__State_or_hashref;
		298
		299	static struct slf_frame slf_frame; /* the current slf frame */
285		300
286	/ Coro ******************************************************************/	301	/ Coro ******************************************************************/
287		302
288	#define PRIO_MAX 3	303	#define PRIO_MAX 3
289	#define PRIO_HIGH 1	304	#define PRIO_HIGH 1
…		…
294		309
295	/* for Coro.pm */	310	/* for Coro.pm */
296	static SV *coro_current;	311	static SV *coro_current;
297	static SV *coro_readyhook;	312	static SV *coro_readyhook;
298	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	313	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
299	static int coro_nready;
300	static struct coro *coro_first;	314	static struct coro *coro_first;
		315	#define coro_nready coroapi.nready
301		316
302	/ lowlevel stuff ********************************************************/	317	/ lowlevel stuff ********************************************************/
303		318
304	static SV *	319	static SV *
305	coro_get_sv (pTHX_ const char *name, int create)	320	coro_get_sv (pTHX_ const char *name, int create)
…		…
408	: 0	423	: 0
409		424
410	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	425	#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)	426	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
412		427
413	static struct coro *	428	INLINE struct coro *
414	SvSTATE_ (pTHX_ SV *coro)	429	SvSTATE_ (pTHX_ SV *coro)
415	{	430	{
416	HV *stash;	431	HV *stash;
417	MAGIC *mg;	432	MAGIC *mg;
418		433
…		…
509	CvPADLIST (cv) = (AV *)POPs;	524	CvPADLIST (cv) = (AV *)POPs;
510	}	525	}
511		526
512	PUTBACK;	527	PUTBACK;
513	}	528	}
		529
		530	slf_frame = c->slf_frame;
		531	coroapi.slf_data = c->slf_data;
514	}	532	}
515		533
516	static void	534	static void
517	save_perl (pTHX_ Coro__State c)	535	save_perl (pTHX_ Coro__State c)
518	{	536	{
		537	c->slf_data = coroapi.slf_data;
		538	c->slf_frame = slf_frame;
		539
519	{	540	{
520	dSP;	541	dSP;
521	I32 cxix = cxstack_ix;	542	I32 cxix = cxstack_ix;
522	PERL_CONTEXT *ccstk = cxstack;	543	PERL_CONTEXT *ccstk = cxstack;
523	PERL_SI *top_si = PL_curstackinfo;	544	PERL_SI *top_si = PL_curstackinfo;
…		…
590	#undef VAR	611	#undef VAR
591	}	612	}
592	}	613	}
593		614
594	/*	615	/*
595	* allocate various perl stacks. This is an exact copy	616	* allocate various perl stacks. This is almost an exact copy
596	* of perl.c:init_stacks, except that it uses less memory	617	* of perl.c:init_stacks, except that it uses less memory
597	* on the (sometimes correct) assumption that coroutines do	618	* on the (sometimes correct) assumption that coroutines do
598	* not usually need a lot of stackspace.	619	* not usually need a lot of stackspace.
599	*/	620	*/
600	#if CORO_PREFER_PERL_FUNCTIONS	621	#if CORO_PREFER_PERL_FUNCTIONS
…		…
802		823
803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	824	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804	}	825	}
805		826
806	static void	827	static void
		828	prepare_nop (aTHX_ struct coro_transfer_args *ta)
		829	{
		830	/* kind of mega-hacky, but works */
		831	ta->next = ta->prev = (struct coro *)ta;
		832	}
		833
		834	static int
		835	slf_check_nop (aTHX)
		836	{
		837	return 0;
		838	}
		839
		840	static void
807	coro_setup (pTHX_ struct coro *coro)	841	coro_setup (pTHX_ struct coro *coro)
808	{	842	{
809	/*	843	/*
810	* emulate part of the perl startup here.	844	* emulate part of the perl startup here.
811	*/	845	*/
…		…
835	PL_rs = newSVsv (GvSV (irsgv));	869	PL_rs = newSVsv (GvSV (irsgv));
836	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	870	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
837		871
838	{	872	{
839	dSP;	873	dSP;
840	LOGOP myop;	874	UNOP myop;
841		875
842	Zero (&myop, 1, LOGOP);	876	Zero (&myop, 1, UNOP);
843	myop.op_next = Nullop;	877	myop.op_next = Nullop;
844	myop.op_flags = OPf_WANT_VOID;	878	myop.op_flags = OPf_WANT_VOID;
845		879
846	PUSHMARK (SP);	880	PUSHMARK (SP);
847	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	881	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
850	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	884	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
851	SPAGAIN;	885	SPAGAIN;
852	}	886	}
853		887
854	/* this newly created coroutine might be run on an existing cctx which most	888	/* this newly created coroutine might be run on an existing cctx which most
855	* likely was suspended in set_stacklevel, called from entersub.	889	* 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	*/	890	*/
859	ENTER;	891	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		892	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
860	}	893	}
861		894
862	static void	895	static void
863	coro_destruct (pTHX_ struct coro *coro)	896	coro_destruct (pTHX_ struct coro *coro)
864	{	897	{
…		…
893	SvREFCNT_dec (coro->throw);	926	SvREFCNT_dec (coro->throw);
894		927
895	coro_destruct_stacks (aTHX);	928	coro_destruct_stacks (aTHX);
896	}	929	}
897		930
898	static void	931	INLINE void
899	free_coro_mortal (pTHX)	932	free_coro_mortal (pTHX)
900	{	933	{
901	if (expect_true (coro_mortal))	934	if (expect_true (coro_mortal))
902	{	935	{
903	SvREFCNT_dec (coro_mortal);	936	SvREFCNT_dec (coro_mortal);
…		…
1027		1060
1028	TAINT_NOT;	1061	TAINT_NOT;
1029	return 0;	1062	return 0;
1030	}	1063	}
1031		1064
		1065	static void
		1066	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)
		1067	{
		1068	ta->prev = (struct coro *)cctx;
		1069	ta->next = 0;
		1070	}
		1071
1032	/* inject a fake call to Coro::State::_cctx_init into the execution */	1072	/* 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 */	1073	/* _cctx_init should be careful, as it could be called at almost any time */
1034	/* during execution of a perl program */	1074	/* during execution of a perl program */
1035	/* also initialises PL_top_env */	1075	/* also initialises PL_top_env */
1036	static void NOINLINE	1076	static void NOINLINE
1037	cctx_prepare (pTHX_ coro_cctx *cctx)	1077	cctx_prepare (pTHX_ coro_cctx *cctx)
1038	{	1078	{
1039	dSP;	1079	dSP;
1040	LOGOP myop;	1080	UNOP myop;
1041		1081
1042	PL_top_env = &PL_start_env;	1082	PL_top_env = &PL_start_env;
1043		1083
1044	if (cctx->flags & CC_TRACE)	1084	if (cctx->flags & CC_TRACE)
1045	PL_runops = runops_trace;	1085	PL_runops = runops_trace;
1046		1086
1047	Zero (&myop, 1, LOGOP);	1087	Zero (&myop, 1, UNOP);
1048	myop.op_next = PL_op;	1088	myop.op_next = PL_op;
1049	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1089	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
1050		1090
1051	PUSHMARK (SP);	1091	PUSHMARK (SP);
1052	EXTEND (SP, 2);	1092	EXTEND (SP, 2);
1053	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1093	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1054	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1094	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1055	PUTBACK;	1095	PUTBACK;
1056	PL_op = (OP *)&myop;	1096	PL_op = (OP *)&myop;
1057	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1097	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1058	SPAGAIN;	1098	SPAGAIN;
1059	}	1099	}
1060		1100
1061	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */	1101	/* the tail of transfer: execute stuff we can only do after a transfer */
1062	static void	1102	INLINE void
1063	transfer_tail (void)	1103	transfer_tail (pTHX)
1064	{	1104	{
		1105	struct coro next = (struct coro )transfer_next;
		1106	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1107	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1108
		1109	free_coro_mortal (aTHX);
1065	UNLOCK;	1110	UNLOCK;
1066		1111
1067	if (expect_false (next_has_throw))	1112	if (expect_false (next->throw))
1068	{	1113	{
1069	struct coro *coro = SvSTATE (coro_current);
1070
1071	if (coro->throw)
1072	{
1073	SV *exception = coro->throw;	1114	SV *exception = sv_2mortal (next->throw);
		1115
1074	coro->throw = 0;	1116	next->throw = 0;
1075	sv_setsv (ERRSV, exception);	1117	sv_setsv (ERRSV, exception);
1076	croak (0);	1118	croak (0);
1077	}
1078	}	1119	}
1079	}	1120	}
1080		1121
1081	/*	1122	/*
1082	* this is a _very_ stripped down perl interpreter ;)	1123	* this is a _very_ stripped down perl interpreter ;)
…		…
1090	# endif	1131	# endif
1091	#endif	1132	#endif
1092	{	1133	{
1093	dTHX;	1134	dTHX;
1094		1135
1095	/* we now skip the entersub that lead to transfer () */	1136	/* normally we would need to skip the entersub here */
		1137	/* not doing so will re-execute it, which is exactly what we want */
1096	PL_op = PL_op->op_next;	1138	/* PL_nop = PL_nop->op_next */
1097		1139
1098	/* inject a fake subroutine call to cctx_init */	1140	/* inject a fake subroutine call to cctx_init */
1099	cctx_prepare (aTHX_ (coro_cctx *)arg);	1141	cctx_prepare (aTHX_ (coro_cctx *)arg);
1100		1142
1101	/* cctx_run is the alternative tail of transfer () */	1143	/* cctx_run is the alternative tail of transfer() */
		1144	/* TODO: throwing an exception here might be deadly, VERIFY */
1102	transfer_tail ();	1145	transfer_tail (aTHX);
1103		1146
1104	/* somebody or something will hit me for both perl_run and PL_restartop */	1147	/* somebody or something will hit me for both perl_run and PL_restartop */
1105	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1106	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
1107		1150
…		…
1125	++cctx_count;	1168	++cctx_count;
1126	New (0, cctx, 1, coro_cctx);	1169	New (0, cctx, 1, coro_cctx);
1127		1170
1128	cctx->gen = cctx_gen;	1171	cctx->gen = cctx_gen;
1129	cctx->flags = 0;	1172	cctx->flags = 0;
1130	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */	1173	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1131		1174
1132	return cctx;	1175	return cctx;
1133	}	1176	}
1134		1177
1135	/* create a new cctx only suitable as source */	1178	/* create a new cctx only suitable as source */
…		…
1157	/* mmap supposedly does allocate-on-write for us */	1200	/* 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);	1201	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
1159		1202
1160	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1161	{	1204	{
1162	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1163	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1164	# endif	1207	#endif
1165	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1166	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1167	cctx->flags \|= CC_MAPPED;	1210	cctx->flags \|= CC_MAPPED;
1168	}	1211	}
1169	else	1212	else
1170	#endif	1213	#endif
1171	{	1214	{
1172	cctx->ssize = cctx_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1173	New (0, cctx->sptr, cctx_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1174		1217
1175	if (!cctx->sptr)	1218	if (!cctx->sptr)
1176	{	1219	{
1177	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1178	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1179	}	1222	}
1180		1223
1181	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1182	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1183	}	1226	}
1184		1227
1185	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1228	#if CORO_USE_VALGRIND
		1229	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char )stack_start, (char )stack_start + stack_size);
		1230	#endif
		1231
1186	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1232	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1187		1233
1188	return cctx;	1234	return cctx;
1189	}	1235	}
1190		1236
…		…
1198	coro_destroy (&cctx->cctx);	1244	coro_destroy (&cctx->cctx);
1199		1245
1200	/* coro_transfer creates new, empty cctx's */	1246	/* coro_transfer creates new, empty cctx's */
1201	if (cctx->sptr)	1247	if (cctx->sptr)
1202	{	1248	{
1203	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1204	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1205	#endif	1251	#endif
1206		1252
1207	#if HAVE_MMAP	1253	#if HAVE_MMAP
1208	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1209	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1210	else	1256	else
…		…
1237	}	1283	}
1238		1284
1239	static void	1285	static void
1240	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1241	{	1287	{
1242	assert (("cctx_put called on non-initialised cctx", cctx->sptr));	1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1243		1289
1244	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1245	if (expect_false (cctx_idle >= cctx_max_idle))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1246	{	1292	{
1247	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
…		…
1286	dSTACKLEVEL;	1332	dSTACKLEVEL;
1287		1333
1288	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1289	if (expect_false (!next))	1335	if (expect_false (!next))
1290	{	1336	{
1291	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1292	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1338	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1293	}	1339	}
1294	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1295	{	1341	{
1296	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
…		…
1321	else	1367	else
1322	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1323		1369
1324	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1325		1371
1326	if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
1328	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1329	if (expect_true (	1373	if (expect_true (
1330	prev__cctx->idle_sp == STACKLEVEL	1374	prev__cctx->idle_sp == stacklevel
1331	&& !(prev__cctx->flags & CC_TRACE)	1375	&& !(prev__cctx->flags & CC_TRACE)
1332	&& !force_cctx	1376	&& !force_cctx
1333	))	1377	))
1334	{	1378	{
1335	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1379	/* 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));	1380	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1337		1381
1338	prev->cctx = 0;	1382	prev->cctx = 0;
1339		1383
1340	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1384	/* 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 */	1385	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1349	++next->usecount;	1393	++next->usecount;
1350		1394
1351	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1352	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1353		1397
1354	next_has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1355		1400
1356	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1357	{	1402	{
1358	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1359	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1360	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1361	}	1406	}
1362		1407
1363	free_coro_mortal (aTHX);
1364	UNLOCK;
1365
1366	transfer_tail ();	1408	transfer_tail (aTHX);
1367	}	1409	}
1368	}	1410	}
1369
1370	struct transfer_args
1371	{
1372	struct coro prev, next;
1373	};
1374		1411
1375	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1412	#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)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377		1414
1378	/ high level stuff ******************************************************/	1415	/ high level stuff ******************************************************/
…		…
1460	# define MGf_DUP 0	1497	# define MGf_DUP 0
1461	#endif	1498	#endif
1462	};	1499	};
1463		1500
1464	static void	1501	static void
1465	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1502	prepare_transfer (pTHX_ struct coro_transfer_args ta, SV prev_sv, SV *next_sv)
1466	{	1503	{
1467	ta->prev = SvSTATE (prev_sv);	1504	ta->prev = SvSTATE (prev_sv);
1468	ta->next = SvSTATE (next_sv);	1505	ta->next = SvSTATE (next_sv);
1469	TRANSFER_CHECK (*ta);	1506	TRANSFER_CHECK (*ta);
1470	}	1507	}
1471		1508
1472	static void	1509	static void
1473	api_transfer (SV prev_sv, SV next_sv)	1510	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1474	{	1511	{
1475	dTHX;
1476	struct transfer_args ta;	1512	struct coro_transfer_args ta;
1477		1513
1478	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1479	TRANSFER (ta, 1);	1515	TRANSFER (ta, 1);
1480	}	1516	}
1481		1517
…		…
1498		1534
1499	return 0;	1535	return 0;
1500	}	1536	}
1501		1537
1502	static int	1538	static int
1503	api_ready (SV *coro_sv)	1539	api_ready (pTHX_ SV *coro_sv)
1504	{	1540	{
1505	dTHX;
1506	struct coro *coro;	1541	struct coro *coro;
1507	SV *sv_hook;	1542	SV *sv_hook;
1508	void (*xs_hook)(void);	1543	void (*xs_hook)(void);
1509		1544
1510	if (SvROK (coro_sv))	1545	if (SvROK (coro_sv))
…		…
1548		1583
1549	return 1;	1584	return 1;
1550	}	1585	}
1551		1586
1552	static int	1587	static int
1553	api_is_ready (SV *coro_sv)	1588	api_is_ready (pTHX_ SV *coro_sv)
1554	{	1589	{
1555	dTHX;
1556	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1590	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1557	}	1591	}
1558		1592
1559	static void	1593	INLINE void
1560	prepare_schedule (pTHX_ struct transfer_args *ta)	1594	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1561	{	1595	{
1562	SV prev_sv, next_sv;	1596	SV prev_sv, next_sv;
1563		1597
1564	for (;;)	1598	for (;;)
1565	{	1599	{
…		…
1590	/* cannot transfer to destroyed coros, skip and look for next */	1624	/* cannot transfer to destroyed coros, skip and look for next */
1591	if (expect_false (ta->next->flags & CF_DESTROYED))	1625	if (expect_false (ta->next->flags & CF_DESTROYED))
1592	{	1626	{
1593	UNLOCK;	1627	UNLOCK;
1594	SvREFCNT_dec (next_sv);	1628	SvREFCNT_dec (next_sv);
1595	/* coro_nready is already taken care of by destroy */	1629	/* coro_nready has already been taken care of by destroy */
1596	continue;	1630	continue;
1597	}	1631	}
1598		1632
1599	--coro_nready;	1633	--coro_nready;
1600	UNLOCK;	1634	UNLOCK;
…		…
1603		1637
1604	/* free this only after the transfer */	1638	/* free this only after the transfer */
1605	prev_sv = SvRV (coro_current);	1639	prev_sv = SvRV (coro_current);
1606	ta->prev = SvSTATE (prev_sv);	1640	ta->prev = SvSTATE (prev_sv);
1607	TRANSFER_CHECK (*ta);	1641	TRANSFER_CHECK (*ta);
1608	assert (ta->next->flags & CF_READY);	1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1609	ta->next->flags &= ~CF_READY;	1643	ta->next->flags &= ~CF_READY;
1610	SvRV_set (coro_current, next_sv);	1644	SvRV_set (coro_current, next_sv);
1611		1645
1612	LOCK;	1646	LOCK;
1613	free_coro_mortal (aTHX);	1647	free_coro_mortal (aTHX);
1614	coro_mortal = prev_sv;	1648	coro_mortal = prev_sv;
1615	UNLOCK;	1649	UNLOCK;
1616	}	1650	}
1617		1651
		1652	INLINE void
		1653	prepare_cede (pTHX_ struct coro_transfer_args *ta)
		1654	{
		1655	api_ready (aTHX_ coro_current);
		1656	prepare_schedule (aTHX_ ta);
		1657	}
		1658
		1659	INLINE void
		1660	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1661	{
		1662	SV *prev = SvRV (coro_current);
		1663
		1664	if (coro_nready)
		1665	{
		1666	prepare_schedule (aTHX_ ta);
		1667	api_ready (aTHX_ prev);
		1668	}
		1669	else
		1670	prepare_nop (aTHX_ ta);
		1671	}
		1672
1618	static void	1673	static void
1619	prepare_cede (pTHX_ struct transfer_args *ta)	1674	api_schedule (pTHX)
1620	{	1675	{
1621	api_ready (coro_current);	1676	struct coro_transfer_args ta;
		1677
1622	prepare_schedule (aTHX_ ta);	1678	prepare_schedule (aTHX_ &ta);
		1679	TRANSFER (ta, 1);
1623	}	1680	}
1624		1681
1625	static int	1682	static int
1626	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1683	api_cede (pTHX)
1627	{	1684	{
1628	if (coro_nready)	1685	struct coro_transfer_args ta;
1629	{	1686
1630	SV *prev = SvRV (coro_current);
1631	prepare_schedule (aTHX_ ta);	1687	prepare_cede (aTHX_ &ta);
1632	api_ready (prev);	1688
		1689	if (expect_true (ta.prev != ta.next))
		1690	{
		1691	TRANSFER (ta, 1);
1633	return 1;	1692	return 1;
1634	}	1693	}
1635	else	1694	else
1636	return 0;	1695	return 0;
1637	}	1696	}
1638		1697
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	1698	static int
1650	api_cede (void)	1699	api_cede_notself (pTHX)
1651	{	1700	{
1652	dTHX;	1701	if (coro_nready)
		1702	{
1653	struct transfer_args ta;	1703	struct coro_transfer_args ta;
1654		1704
1655	prepare_cede (aTHX_ &ta);	1705	prepare_cede_notself (aTHX_ &ta);
1656
1657	if (expect_true (ta.prev != ta.next))
1658	{
1659	TRANSFER (ta, 1);	1706	TRANSFER (ta, 1);
1660	return 1;	1707	return 1;
1661	}	1708	}
1662	else	1709	else
1663	return 0;	1710	return 0;
1664	}	1711	}
1665		1712
1666	static int
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	1713	static void
1682	api_trace (SV *coro_sv, int flags)	1714	api_trace (pTHX_ SV *coro_sv, int flags)
1683	{	1715	{
1684	dTHX;
1685	struct coro *coro = SvSTATE (coro_sv);	1716	struct coro *coro = SvSTATE (coro_sv);
1686		1717
1687	if (flags & CC_TRACE)	1718	if (flags & CC_TRACE)
1688	{	1719	{
1689	if (!coro->cctx)	1720	if (!coro->cctx)
…		…
1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1787	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757	double now = nvtime ();	1788	double now = nvtime ();
1758		1789
1759	if (now >= self->next)	1790	if (now >= self->next)
1760	{	1791	{
1761	api_cede ();	1792	api_cede (aTHX);
1762	self->next = now + self->every;	1793	self->next = now + self->every;
1763	}	1794	}
1764		1795
1765	return PerlIOBuf_flush (aTHX_ f);	1796	return PerlIOBuf_flush (aTHX_ f);
1766	}	1797	}
…		…
1795	PerlIOBuf_get_ptr,	1826	PerlIOBuf_get_ptr,
1796	PerlIOBuf_get_cnt,	1827	PerlIOBuf_get_cnt,
1797	PerlIOBuf_set_ptrcnt,	1828	PerlIOBuf_set_ptrcnt,
1798	};	1829	};
1799		1830
		1831	/*****************************************************************************/
		1832
		1833	static const CV slf_cv; / for quick consistency check */
		1834
		1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1836	static SV *slf_arg0;
		1837	static SV *slf_arg1;
		1838
		1839	/* this restores the stack in the case we patched the entersub, to */
		1840	/* recreate the stack frame as perl will on following calls */
		1841	/* since entersub cleared the stack */
		1842	static OP *
		1843	pp_restore (pTHX)
		1844	{
		1845	dSP;
		1846
		1847	PUSHMARK (SP);
		1848
		1849	EXTEND (SP, 3);
		1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1852	PUSHs ((SV *)CvGV (slf_cv));
		1853
		1854	RETURNOP (slf_restore.op_first);
		1855	}
		1856
		1857	static void
		1858	slf_init_set_stacklevel (pTHX_ SV **arg, int items)
		1859	{
		1860	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1861	CORO_SLF_DATA = (void *)SvIV (arg [0]);
		1862	}
		1863
		1864	static void
		1865	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1866	{
		1867	prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA);
		1868	}
		1869
		1870	static void
		1871	slf_init_transfer (pTHX_ SV **arg, int items)
		1872	{
		1873	if (items != 2)
		1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1875
		1876	CORO_SLF_DATA = (void )arg; / let's hope it will stay valid */
		1877	}
		1878
		1879	static void
		1880	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1881	{
		1882	SV arg = (SV )CORO_SLF_DATA;
		1883
		1884	prepare_transfer (ta, arg [0], arg [1]);
		1885	}
		1886
		1887	static void
		1888	slf_init_nop (pTHX_ SV **arg, int items)
		1889	{
		1890	}
		1891
		1892	/* slf_prepare_schedule == prepare_schedule */
		1893	/* slf_prepare_cede == prepare_cede */
		1894	/* slf_prepare_notself == prepare_notself */
		1895
		1896	/* we hijack an hopefully unused CV flag for our purposes */
		1897	#define CVf_SLF 0x4000
		1898
		1899	/*
		1900	* these not obviously related functions are all rolled into one
		1901	* function to increase chances that they all will call transfer with the same
		1902	* stack offset
		1903	* SLF stands for "schedule-like-function".
		1904	*/
		1905	static OP *
		1906	pp_slf (pTHX)
		1907	{
		1908	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1909
		1910	if (expect_true (!slf_frame.prepare))
		1911	{
		1912	/* first iteration */
		1913	dSP;
		1914	SV **arg = PL_stack_base + TOPMARK + 1;
		1915	int items = SP - arg; /* args without function object */
		1916	SV gv = sp;
		1917	struct CoroSLF *slf;
		1918
		1919	/* do a quick consistency check on the "function" object, and if it isn't */
		1920	/* for us, divert to the real entersub */
		1921	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1922	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1923
		1924	/* pop args */
		1925	SP = PL_stack_base + POPMARK;
		1926
		1927	if (!(PL_op->op_flags & OPf_STACKED))
		1928	{
		1929	/* ampersand-form of call, use @_ instead of stack */
		1930	AV *av = GvAV (PL_defgv);
		1931	arg = AvARRAY (av);
		1932	items = AvFILLp (av) + 1;
		1933	}
		1934
		1935	PUTBACK;
		1936
		1937	slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;
		1938	slf_frame.prepare = slf->prepare;
		1939	slf_frame.check = slf->check;
		1940	slf->init (aTHX_ arg, items);
		1941	}
		1942
		1943	/* now interpret the slf_frame */
		1944	/* we use a callback system not to make the code needlessly */
		1945	/* complicated, but so we can run multiple perl coros from one cctx */
		1946
		1947	do
		1948	{
		1949	struct coro_transfer_args ta;
		1950
		1951	slf_frame.prepare (aTHX_ &ta);
		1952	TRANSFER (ta, 0);
		1953
		1954	checkmark = PL_stack_sp - PL_stack_base;
		1955	}
		1956	while (slf_frame.check (aTHX));
		1957
		1958	{
		1959	dSP;
		1960	SV **bot = PL_stack_base + checkmark;
		1961	int gimme = GIMME_V;
		1962
		1963	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
		1964
		1965	/* make sure we put something on the stack in scalar context */
		1966	if (gimme == G_SCALAR)
		1967	{
		1968	if (sp == bot)
		1969	XPUSHs (&PL_sv_undef);
		1970
		1971	SP = bot + 1;
		1972	}
		1973
		1974	PUTBACK;
		1975	}
		1976
		1977	return NORMAL;
		1978	}
		1979
		1980	static void
		1981	api_execute_slf (pTHX_ CV cv, const struct CoroSLF slf, SV **arg, int items)
		1982	{
		1983	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1984	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1985
		1986	if (items > 2)
		1987	croak ("Coro only supports a max of two arguments to SLF functions.");
		1988
		1989	CvFLAGS (cv) \|= CVf_SLF;
		1990	CvXSUBANY (cv).any_ptr = (void *)slf;
		1991	slf_cv = cv;
		1992
		1993	/* we patch the op, and then re-run the whole call */
		1994	/* we have to put the same argument on the stack for this to work */
		1995	/* and this will be done by pp_restore */
		1996	slf_restore.op_next = (OP *)&slf_restore;
		1997	slf_restore.op_type = OP_NULL;
		1998	slf_restore.op_ppaddr = pp_restore;
		1999	slf_restore.op_first = PL_op;
		2000
		2001	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
		2002	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		2003
		2004	PL_op->op_ppaddr = pp_slf;
		2005
		2006	PL_op = (OP *)&slf_restore;
		2007	}
1800		2008
1801	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2009	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1802		2010
1803	PROTOTYPES: DISABLE	2011	PROTOTYPES: DISABLE
1804		2012
…		…
1834	main_top_env = PL_top_env;	2042	main_top_env = PL_top_env;
1835		2043
1836	while (main_top_env->je_prev)	2044	while (main_top_env->je_prev)
1837	main_top_env = main_top_env->je_prev;	2045	main_top_env = main_top_env->je_prev;
1838		2046
1839	coroapi.ver = CORO_API_VERSION;	2047	coroapi.ver = CORO_API_VERSION;
1840	coroapi.rev = CORO_API_REVISION;	2048	coroapi.rev = CORO_API_REVISION;
1841	coroapi.transfer = api_transfer;	2049	coroapi.transfer = api_transfer;
		2050	coroapi.execute_slf = api_execute_slf;
		2051	coroapi.sv_state = SvSTATE_;
1842		2052
1843	{	2053	{
1844	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2054	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845		2055
1846	if (!svp) croak ("Time::HiRes is required");	2056	if (!svp) croak ("Time::HiRes is required");
…		…
1879	av_push (coro->args, newSVsv (ST (i)));	2089	av_push (coro->args, newSVsv (ST (i)));
1880	}	2090	}
1881	OUTPUT:	2091	OUTPUT:
1882	RETVAL	2092	RETVAL
1883		2093
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	2094	void
1888	_set_stacklevel (...)	2095	_set_stacklevel (...)
1889	ALIAS:	2096	CODE:
1890	Coro::State::transfer = 1
1891	Coro::schedule = 2
1892	Coro::cede = 3
1893	Coro::cede_notself = 4
1894	CODE:
1895	{	2097	{
1896	struct transfer_args ta;	2098	static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
		2099	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
		2100	}
1897		2101
1898	PUTBACK;	2102	void
1899	switch (ix)	2103	transfer (...)
1900	{	2104	CODE:
1901	case 0:	2105	{
1902	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	2106	static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
1903	ta.next = 0;	2107	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
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	}	2108	}
1935		2109
1936	bool	2110	bool
1937	_destroy (SV *coro_sv)	2111	_destroy (SV *coro_sv)
1938	CODE:	2112	CODE:
…		…
2049	RETVAL = boolSV (coro->flags & ix);	2223	RETVAL = boolSV (coro->flags & ix);
2050	OUTPUT:	2224	OUTPUT:
2051	RETVAL	2225	RETVAL
2052		2226
2053	void	2227	void
		2228	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2229	PROTOTYPE: $;$
		2230	CODE:
		2231	SvREFCNT_dec (self->throw);
		2232	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2233
		2234	void
2054	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2235	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2236	C_ARGS: aTHX_ coro, flags
2055		2237
2056	SV *	2238	SV *
2057	has_cctx (Coro::State coro)	2239	has_cctx (Coro::State coro)
2058	PROTOTYPE: $	2240	PROTOTYPE: $
2059	CODE:	2241	CODE:
…		…
2129		2311
2130	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2312	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2131	coro_ready[i] = newAV ();	2313	coro_ready[i] = newAV ();
2132		2314
2133	{	2315	{
2134	SV *sv = perl_get_sv ("Coro::API", TRUE);	2316	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2135	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2136		2317
2137	coroapi.schedule = api_schedule;	2318	coroapi.schedule = api_schedule;
2138	coroapi.cede = api_cede;	2319	coroapi.cede = api_cede;
2139	coroapi.cede_notself = api_cede_notself;	2320	coroapi.cede_notself = api_cede_notself;
2140	coroapi.ready = api_ready;	2321	coroapi.ready = api_ready;
2141	coroapi.is_ready = api_is_ready;	2322	coroapi.is_ready = api_is_ready;
2142	coroapi.nready = &coro_nready;	2323	coroapi.nready = coro_nready;
2143	coroapi.current = coro_current;	2324	coroapi.current = coro_current;
2144		2325
2145	GCoroAPI = &coroapi;	2326	GCoroAPI = &coroapi;
2146	sv_setiv (sv, (IV)&coroapi);	2327	sv_setiv (sv, (IV)&coroapi);
2147	SvREADONLY_on (sv);	2328	SvREADONLY_on (sv);
2148	}	2329	}
		2330	}
		2331
		2332	void
		2333	schedule (...)
		2334	CODE:
		2335	{
		2336	static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop };
		2337	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
		2338	}
		2339
		2340	void
		2341	cede (...)
		2342	CODE:
		2343	{
		2344	static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
		2345	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
		2346	}
		2347
		2348	void
		2349	cede_notself (...)
		2350	CODE:
		2351	{
		2352	static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
		2353	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2149	}	2354	}
2150		2355
2151	void	2356	void
2152	_set_current (SV *current)	2357	_set_current (SV *current)
2153	PROTOTYPE: $	2358	PROTOTYPE: $
…		…
2188		2393
2189	SV *	2394	SV *
2190	ready (SV *self)	2395	ready (SV *self)
2191	PROTOTYPE: $	2396	PROTOTYPE: $
2192	CODE:	2397	CODE:
2193	RETVAL = boolSV (api_ready (self));	2398	RETVAL = boolSV (api_ready (aTHX_ self));
2194	OUTPUT:	2399	OUTPUT:
2195	RETVAL	2400	RETVAL
2196		2401
2197	int	2402	int
2198	nready (...)	2403	nready (...)
2199	PROTOTYPE:	2404	PROTOTYPE:
2200	CODE:	2405	CODE:
2201	RETVAL = coro_nready;	2406	RETVAL = coro_nready;
2202	OUTPUT:	2407	OUTPUT:
2203	RETVAL	2408	RETVAL
2204
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		2409
2212	# for async_pool speedup	2410	# for async_pool speedup
2213	void	2411	void
2214	_pool_1 (SV *cb)	2412	_pool_1 (SV *cb)
2215	CODE:	2413	CODE:
…		…
2275	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2473	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276		2474
2277	coro->prio = 0;	2475	coro->prio = 0;
2278		2476
2279	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2477	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280	api_trace (coro_current, 0);	2478	api_trace (aTHX_ coro_current, 0);
2281		2479
2282	av_push (av_async_pool, newSVsv (coro_current));	2480	av_push (av_async_pool, newSVsv (coro_current));
2283	}	2481	}
2284		2482
2285	#if 0	2483	#if 0
…		…
2357		2555
2358	av_push (av, data_sv);	2556	av_push (av, data_sv);
2359		2557
2360	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2558	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2361		2559
2362	api_ready (self);	2560	api_ready (aTHX_ self);
2363	}	2561	}
2364		2562
2365	void	2563	void
2366	_set_state (SV *state)	2564	_set_state (SV *state)
2367	PROTOTYPE: $	2565	PROTOTYPE: $
…		…
2392	PROTOTYPE: @	2590	PROTOTYPE: @
2393	CODE:	2591	CODE:
2394	{	2592	{
2395	static int incede;	2593	static int incede;
2396		2594
2397	api_cede_notself ();	2595	api_cede_notself (aTHX);
2398		2596
2399	++incede;	2597	++incede;
2400	while (coro_nready >= incede && api_cede ())	2598	while (coro_nready >= incede && api_cede (aTHX))
2401	;	2599	;
2402		2600
2403	sv_setsv (sv_activity, &PL_sv_undef);	2601	sv_setsv (sv_activity, &PL_sv_undef);
2404	if (coro_nready >= incede)	2602	if (coro_nready >= incede)
2405	{	2603	{
…		…
2415		2613
2416	MODULE = Coro::State PACKAGE = PerlIO::cede	2614	MODULE = Coro::State PACKAGE = PerlIO::cede
2417		2615
2418	BOOT:	2616	BOOT:
2419	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2617	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2618

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 1.272 by root, Fri Nov 14 20:35:49 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 1.272 by root, Fri Nov 14 20:35:49 2008 UTC