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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.248 by root, Mon Sep 29 12:40:50 2008 UTC vs.
Revision 1.269 by root, Fri Nov 14 06:50:11 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	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
58		55
59	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
60	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
61	\|\| (PERL_REVISION == (a) \	58	\|\| (PERL_REVISION == (a) \
62	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
81	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
82	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
83	# endif	80	# endif
84	#endif	81	#endif
85		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
86	/* 5.8.8 */	93	/* 5.8.8 */
87	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
88	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
89	#endif	96	#endif
90	#ifndef newSV	97	#ifndef newSV
91	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
92	#endif	99	#endif
93		100
94	/* 5.11 */
95	#ifndef CxHASARGS
96	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
97	#endif
98
99	/* 5.8.7 */	101	/* 5.8.7 */
100	#ifndef SvRV_set	102	#ifndef SvRV_set
101	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
102	#endif	104	#endif
103		105
…		…
114	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
115	#endif	117	#endif
116		118
117	/* 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
118	* portable way as possible. */	120	* portable way as possible. */
119	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
120	#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
121		126
122	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
123		128
124	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
125	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
126	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
128	#else	133	#else
129	# define attribute(x)	134	# define attribute(x)
130	# define BARRIER
131	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
132	#endif	137	#endif
133		138
134	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
135	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
136		141
137	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
138		143
139	#include "CoroAPI.h"	144	#include "CoroAPI.h"
140		145
141	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
142	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
143	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
144	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
145	#else	155	#else
		156
146	# define LOCK (void)0	157	# define LOCK (void)0
147	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
148	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
149		166
150	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
151	struct io_state	168	struct io_state
152	{	169	{
		170	AV *res;
153	int errorno;	171	int errorno;
154	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
155	int laststatval;	173	int laststatval;
156	Stat_t statcache;	174	Stat_t statcache;
157	};	175	};
158		176
159	static double (nvtime)(); / so why doesn't it take void? */	177	static double (nvtime)(); / so why doesn't it take void? */
160		178
		179	static U32 cctx_gen;
161	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
162	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
163	static AV main_mainstack; / used to differentiate between $main and others */	182	static AV main_mainstack; / used to differentiate between $main and others */
164	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
165	static HV coro_state_stash, coro_stash;	184	static HV coro_state_stash, coro_stash;
166	static volatile SV coro_mortal; / will be freed after next transfer */	185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
		187
		188	struct transfer_args
		189	{
		190	struct coro prev, next;
		191	};
167		192
168	static GV irsgv; / $/ */	193	static GV irsgv; / $/ */
169	static GV stdoutgv; / STDOUT /	194	static GV stdoutgv; / STDOUT /
170	static SV *rv_diehook;	195	static SV *rv_diehook;
171	static SV *rv_warnhook;	196	static SV *rv_warnhook;
…		…
203	void idle_sp; / sp of top-level transfer/schedule/cede call */	228	void idle_sp; / sp of top-level transfer/schedule/cede call */
204	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	229	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
205	JMPENV *top_env;	230	JMPENV *top_env;
206	coro_context cctx;	231	coro_context cctx;
207		232
		233	U32 gen;
208	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
209	int valgrind_id;	235	int valgrind_id;
210	#endif	236	#endif
211	unsigned char flags;	237	unsigned char flags;
212	} coro_cctx;	238	} coro_cctx;
…		…
272	#define PRIO_MIN -4	298	#define PRIO_MIN -4
273		299
274	/* for Coro.pm */	300	/* for Coro.pm */
275	static SV *coro_current;	301	static SV *coro_current;
276	static SV *coro_readyhook;	302	static SV *coro_readyhook;
277	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
278	static int coro_nready;	304	static int coro_nready;
279	static struct coro *coro_first;	305	static struct coro *coro_first;
280		306
281	/ lowlevel stuff ********************************************************/	307	/ lowlevel stuff ********************************************************/
282		308
…		…
324	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
325	#endif	351	#endif
326	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
327	--AvFILLp (padlist);	353	--AvFILLp (padlist);
328		354
329	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
330	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
331		357
332	return newpadlist;	358	return newpadlist;
333	}	359	}
334		360
…		…
377	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
378	0, 0, 0, 0,	404	0, 0, 0, 0,
379	coro_cv_free	405	coro_cv_free
380	};	406	};
381		407
382	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
383	SvMAGIC (sv) \	409	SvMAGIC (sv) \
384	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
385	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
386	: mg_find (sv, type) \	412	: mg_find (sv, type) \
387	: 0	413	: 0
388		414
389	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
391		417
392	static struct coro *	418	INLINE struct coro *
393	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
394	{	420	{
395	HV *stash;	421	HV *stash;
396	MAGIC *mg;	422	MAGIC *mg;
397		423
…		…
622		648
623	/*	649	/*
624	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
625	*/	651	*/
626	static void	652	static void
627	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
628	{	654	{
629	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
630	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
631		657
632	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
686	#endif	712	#endif
687	}	713	}
688	}	714	}
689		715
690	return rss;	716	return rss;
		717	}
		718
		719	/ set stacklevel support ************************************************/
		720
		721	/* we sometimes need to create the effect of pp_slf calling us */
		722	#define SLF_HEAD (void)0
		723	/* we sometimes need to create the effect of leaving via pp_slf */
		724	#define SLF_TAIL slf_tail (aTHX)
		725
		726	INLINE void
		727	slf_tail (pTHX)
		728	{
		729	dSP;
		730	SV **bot = SP;
		731
		732	int gimme = GIMME_V;
		733
		734	/* make sure we put something on the stack in scalar context */
		735	if (gimme == G_SCALAR)
		736	{
		737	if (sp == bot)
		738	XPUSHs (&PL_sv_undef);
		739
		740	SP = bot + 1;
		741	}
		742
		743	PUTBACK;
691	}	744	}
692		745
693	/ coroutine stack handling **********************************************/	746	/ coroutine stack handling **********************************************/
694		747
695	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);	748	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
…		…
810	GvSV (PL_defgv) = newSV (0);	863	GvSV (PL_defgv) = newSV (0);
811	GvAV (PL_defgv) = coro->args; coro->args = 0;	864	GvAV (PL_defgv) = coro->args; coro->args = 0;
812	GvSV (PL_errgv) = newSV (0);	865	GvSV (PL_errgv) = newSV (0);
813	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	866	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
814	PL_rs = newSVsv (GvSV (irsgv));	867	PL_rs = newSVsv (GvSV (irsgv));
815	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	868	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
816		869
817	{	870	{
818	dSP;	871	dSP;
819	LOGOP myop;	872	UNOP myop;
820		873
821	Zero (&myop, 1, LOGOP);	874	Zero (&myop, 1, UNOP);
822	myop.op_next = Nullop;	875	myop.op_next = Nullop;
823	myop.op_flags = OPf_WANT_VOID;	876	myop.op_flags = OPf_WANT_VOID;
824		877
825	PUSHMARK (SP);	878	PUSHMARK (SP);
826	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
829	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
830	SPAGAIN;	883	SPAGAIN;
831	}	884	}
832		885
833	/* this newly created coroutine might be run on an existing cctx which most	886	/* this newly created coroutine might be run on an existing cctx which most
834	* likely was suspended in set_stacklevel, called from entersub.	887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
835	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	888	* so we have to emulate entering pp_set_stacklevel here.
836	* so we ENTER here for symmetry
837	*/	889	*/
838	ENTER;	890	SLF_HEAD;
839	}	891	}
840		892
841	static void	893	static void
842	coro_destroy (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
843	{	895	{
844	if (!IN_DESTRUCT)	896	if (!IN_DESTRUCT)
845	{	897	{
846	/* restore all saved variables and stuff */	898	/* restore all saved variables and stuff */
847	LEAVE_SCOPE (0);	899	LEAVE_SCOPE (0);
…		…
869	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
870		922
871	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
872	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro->throw);
873		925
874	coro_destroy_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
875	}	927	}
876		928
877	static void	929	INLINE void
878	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
879	{	931	{
880	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
881	{	933	{
882	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
916	: cx->blk_gimme == G_SCALAR ? bot + 1	968	: cx->blk_gimme == G_SCALAR ? bot + 1
917	: bot;	969	: bot;
918		970
919	av_extend (av, top - bot);	971	av_extend (av, top - bot);
920	while (bot < top)	972	while (bot < top)
921	av_push (av, SvREFCNT_inc (*bot++));	973	av_push (av, SvREFCNT_inc_NN (*bot++));
922		974
923	PL_runops = RUNOPS_DEFAULT;	975	PL_runops = RUNOPS_DEFAULT;
924	ENTER;	976	ENTER;
925	SAVETMPS;	977	SAVETMPS;
926	EXTEND (SP, 3);	978	EXTEND (SP, 3);
…		…
1006		1058
1007	TAINT_NOT;	1059	TAINT_NOT;
1008	return 0;	1060	return 0;
1009	}	1061	}
1010		1062
		1063	static void
		1064	prepare_set_stacklevel (struct transfer_args ta, struct coro_cctx cctx)
		1065	{
		1066	ta->prev = (struct coro *)cctx;
		1067	ta->next = 0;
		1068	}
		1069
1011	/* inject a fake call to Coro::State::_cctx_init into the execution */	1070	/* inject a fake call to Coro::State::_cctx_init into the execution */
1012	/* _cctx_init should be careful, as it could be called at almost any time */	1071	/* _cctx_init should be careful, as it could be called at almost any time */
1013	/* during execution of a perl program */	1072	/* during execution of a perl program */
		1073	/* also initialises PL_top_env */
1014	static void NOINLINE	1074	static void NOINLINE
1015	cctx_prepare (pTHX_ coro_cctx *cctx)	1075	cctx_prepare (pTHX_ coro_cctx *cctx)
1016	{	1076	{
1017	dSP;	1077	dSP;
1018	LOGOP myop;	1078	UNOP myop;
1019		1079
1020	PL_top_env = &PL_start_env;	1080	PL_top_env = &PL_start_env;
1021		1081
1022	if (cctx->flags & CC_TRACE)	1082	if (cctx->flags & CC_TRACE)
1023	PL_runops = runops_trace;	1083	PL_runops = runops_trace;
1024		1084
1025	Zero (&myop, 1, LOGOP);	1085	Zero (&myop, 1, UNOP);
1026	myop.op_next = PL_op;	1086	myop.op_next = PL_op;
1027	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1087	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
1028		1088
1029	PUSHMARK (SP);	1089	PUSHMARK (SP);
1030	EXTEND (SP, 2);	1090	EXTEND (SP, 2);
1031	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1032	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1033	PUTBACK;	1093	PUTBACK;
1034	PL_op = (OP *)&myop;	1094	PL_op = (OP *)&myop;
1035	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1036	SPAGAIN;	1096	SPAGAIN;
1037	}	1097	}
1038		1098
		1099	/* the tail of transfer: execute stuff we can only do after a transfer */
		1100	INLINE void
		1101	transfer_tail (pTHX)
		1102	{
		1103	struct coro next = (struct coro )transfer_next;
		1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1106
		1107	free_coro_mortal (aTHX);
		1108	UNLOCK;
		1109
		1110	if (expect_false (next->throw))
		1111	{
		1112	SV *exception = sv_2mortal (next->throw);
		1113
		1114	next->throw = 0;
		1115	sv_setsv (ERRSV, exception);
		1116	croak (0);
		1117	}
		1118	}
		1119
1039	/*	1120	/*
1040	* this is a _very_ stripped down perl interpreter ;)	1121	* this is a _very_ stripped down perl interpreter ;)
1041	*/	1122	*/
1042	static void	1123	static void
1043	cctx_run (void *arg)	1124	cctx_run (void *arg)
1044	{	1125	{
		1126	#ifdef USE_ITHREADS
		1127	# if CORO_PTHREAD
		1128	PERL_SET_CONTEXT (coro_thx);
		1129	# endif
		1130	#endif
		1131	{
1045	dTHX;	1132	dTHX;
1046		1133
1047	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1134	/* we are the alternative tail to pp_set_stacklevel */
1048	UNLOCK;	1135	/* so do the same things here */
		1136	SLF_TAIL;
1049		1137
1050	/* we now skip the entersub that lead to transfer() */	1138	/* we now skip the op that did lead to transfer() */
1051	PL_op = PL_op->op_next;	1139	PL_op = PL_op->op_next;
1052		1140
1053	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
1054	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
1055		1143
		1144	/* cctx_run is the alternative tail of transfer() */
		1145	transfer_tail (aTHX);
		1146
1056	/* 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 */
1057	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1058	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
1059		1150
1060	/*	1151	/*
1061	* If perl-run returns we assume exit() was being called or the coro	1152	* If perl-run returns we assume exit() was being called or the coro
1062	* fell off the end, which seems to be the only valid (non-bug)	1153	* fell off the end, which seems to be the only valid (non-bug)
1063	* reason for perl_run to return. We try to exit by jumping to the	1154	* reason for perl_run to return. We try to exit by jumping to the
1064	* bootstrap-time "top" top_env, as we cannot restore the "main"	1155	* bootstrap-time "top" top_env, as we cannot restore the "main"
1065	* coroutine as Coro has no such concept	1156	* coroutine as Coro has no such concept
1066	*/	1157	*/
1067	PL_top_env = main_top_env;	1158	PL_top_env = main_top_env;
1068	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1159	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1160	}
1069	}	1161	}
1070		1162
1071	static coro_cctx *	1163	static coro_cctx *
1072	cctx_new ()	1164	cctx_new ()
1073	{	1165	{
1074	coro_cctx *cctx;	1166	coro_cctx *cctx;
		1167
		1168	++cctx_count;
		1169	New (0, cctx, 1, coro_cctx);
		1170
		1171	cctx->gen = cctx_gen;
		1172	cctx->flags = 0;
		1173	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1174
		1175	return cctx;
		1176	}
		1177
		1178	/* create a new cctx only suitable as source */
		1179	static coro_cctx *
		1180	cctx_new_empty ()
		1181	{
		1182	coro_cctx *cctx = cctx_new ();
		1183
		1184	cctx->sptr = 0;
		1185	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1186
		1187	return cctx;
		1188	}
		1189
		1190	/* create a new cctx suitable as destination/running a perl interpreter */
		1191	static coro_cctx *
		1192	cctx_new_run ()
		1193	{
		1194	coro_cctx *cctx = cctx_new ();
1075	void *stack_start;	1195	void *stack_start;
1076	size_t stack_size;	1196	size_t stack_size;
1077		1197
1078	++cctx_count;
1079
1080	Newz (0, cctx, 1, coro_cctx);
1081
1082	#if HAVE_MMAP	1198	#if HAVE_MMAP
1083	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1199	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1084	/* mmap supposedly does allocate-on-write for us */	1200	/* mmap supposedly does allocate-on-write for us */
1085	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);
1086		1202
1087	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1088	{	1204	{
1089	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1090	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1091	# endif	1207	#endif
1092	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1093	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1094	cctx->flags \|= CC_MAPPED;	1210	cctx->flags \|= CC_MAPPED;
1095	}	1211	}
1096	else	1212	else
1097	#endif	1213	#endif
1098	{	1214	{
1099	cctx->ssize = coro_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1100	New (0, cctx->sptr, coro_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1101		1217
1102	if (!cctx->sptr)	1218	if (!cctx->sptr)
1103	{	1219	{
1104	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1105	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1106	}	1222	}
1107		1223
1108	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1109	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1110	}	1226	}
1111		1227
1112	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
1113	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);
1114		1233
1115	return cctx;	1234	return cctx;
1116	}	1235	}
1117		1236
…		…
1120	{	1239	{
1121	if (!cctx)	1240	if (!cctx)
1122	return;	1241	return;
1123		1242
1124	--cctx_count;	1243	--cctx_count;
		1244	coro_destroy (&cctx->cctx);
1125		1245
		1246	/* coro_transfer creates new, empty cctx's */
		1247	if (cctx->sptr)
		1248	{
1126	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1127	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1128	#endif	1251	#endif
1129		1252
1130	#if HAVE_MMAP	1253	#if HAVE_MMAP
1131	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1132	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1133	else	1256	else
1134	#endif	1257	#endif
1135	Safefree (cctx->sptr);	1258	Safefree (cctx->sptr);
		1259	}
1136		1260
1137	Safefree (cctx);	1261	Safefree (cctx);
1138	}	1262	}
1139		1263
1140	/* wether this cctx should be destructed */	1264	/* wether this cctx should be destructed */
1141	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))	1265	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen \|\| ((cctx)->flags & CC_NOREUSE))
1142		1266
1143	static coro_cctx *	1267	static coro_cctx *
1144	cctx_get (pTHX)	1268	cctx_get (pTHX)
1145	{	1269	{
1146	while (expect_true (cctx_first))	1270	while (expect_true (cctx_first))
…		…
1153	return cctx;	1277	return cctx;
1154		1278
1155	cctx_destroy (cctx);	1279	cctx_destroy (cctx);
1156	}	1280	}
1157		1281
1158	return cctx_new ();	1282	return cctx_new_run ();
1159	}	1283	}
1160		1284
1161	static void	1285	static void
1162	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1163	{	1287	{
		1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1289
1164	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1165	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1166	{	1292	{
1167	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
1168	cctx_first = first->next;	1294	cctx_first = first->next;
1169	--cctx_idle;	1295	--cctx_idle;
1170		1296
…		…
1202	/* always use the TRANSFER macro */	1328	/* always use the TRANSFER macro */
1203	static void NOINLINE	1329	static void NOINLINE
1204	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1330	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1205	{	1331	{
1206	dSTACKLEVEL;	1332	dSTACKLEVEL;
1207	static volatile int has_throw;
1208		1333
1209	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1210	if (expect_false (!next))	1335	if (expect_false (!next))
1211	{	1336	{
1212	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1213	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 */
1214	}	1339	}
1215	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1216	{	1341	{
1217	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
1218		1343
1219	if (expect_false (prev->flags & CF_NEW))	1344	if (expect_false (prev->flags & CF_NEW))
1220	{	1345	{
1221	/* create a new empty context */	1346	/* create a new empty/source context */
1222	Newz (0, prev->cctx, 1, coro_cctx);	1347	prev->cctx = cctx_new_empty ();
1223	prev->flags &= ~CF_NEW;	1348	prev->flags &= ~CF_NEW;
1224	prev->flags \|= CF_RUNNING;	1349	prev->flags \|= CF_RUNNING;
1225	}	1350	}
1226		1351
1227	prev->flags &= ~CF_RUNNING;	1352	prev->flags &= ~CF_RUNNING;
…		…
1242	else	1367	else
1243	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1244		1369
1245	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1246		1371
1247	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1248	if (expect_true (	1373	if (expect_true (
1249	prev__cctx->idle_sp == STACKLEVEL	1374	prev__cctx->idle_sp == stacklevel
1250	&& !(prev__cctx->flags & CC_TRACE)	1375	&& !(prev__cctx->flags & CC_TRACE)
1251	&& !force_cctx	1376	&& !force_cctx
1252	))	1377	))
1253	{	1378	{
1254	/* 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 */
1255	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));
1256		1381
1257	prev->cctx = 0;	1382	prev->cctx = 0;
1258		1383
1259	/* 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 */
1260	/* 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 */
…		…
1268	++next->usecount;	1393	++next->usecount;
1269		1394
1270	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1271	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1272		1397
1273	has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1274		1400
1275	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1276	{	1402	{
1277	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1278	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1279	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1280	}	1406	}
1281		1407
1282	free_coro_mortal (aTHX);	1408	transfer_tail (aTHX);
1283	UNLOCK;
1284
1285	if (expect_false (has_throw))
1286	{
1287	struct coro *coro = SvSTATE (coro_current);
1288
1289	if (coro->throw)
1290	{
1291	SV *exception = coro->throw;
1292	coro->throw = 0;
1293	sv_setsv (ERRSV, exception);
1294	croak (0);
1295	}
1296	}
1297	}	1409	}
1298	}	1410	}
1299
1300	struct transfer_args
1301	{
1302	struct coro prev, next;
1303	};
1304		1411
1305	#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))
1306	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1307		1414
1308	/ high level stuff ******************************************************/	1415	/ high level stuff ******************************************************/
…		…
1334	croak ("FATAL: tried to destroy currently running coroutine");	1441	croak ("FATAL: tried to destroy currently running coroutine");
1335		1442
1336	save_perl (aTHX_ &temp);	1443	save_perl (aTHX_ &temp);
1337	load_perl (aTHX_ coro);	1444	load_perl (aTHX_ coro);
1338		1445
1339	coro_destroy (aTHX_ coro);	1446	coro_destruct (aTHX_ coro);
1340		1447
1341	load_perl (aTHX_ &temp);	1448	load_perl (aTHX_ &temp);
1342		1449
1343	coro->slot = 0;	1450	coro->slot = 0;
1344	}	1451	}
…		…
1450	LOCK;	1557	LOCK;
1451		1558
1452	sv_hook = coro_nready ? 0 : coro_readyhook;	1559	sv_hook = coro_nready ? 0 : coro_readyhook;
1453	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1560	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1454		1561
1455	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1562	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1456	++coro_nready;	1563	++coro_nready;
1457		1564
1458	UNLOCK;	1565	UNLOCK;
1459		1566
1460	if (sv_hook)	1567	if (sv_hook)
…		…
1481		1588
1482	static int	1589	static int
1483	api_is_ready (SV *coro_sv)	1590	api_is_ready (SV *coro_sv)
1484	{	1591	{
1485	dTHX;	1592	dTHX;
		1593
1486	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1594	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1487	}	1595	}
1488		1596
1489	static void	1597	INLINE void
1490	prepare_schedule (pTHX_ struct transfer_args *ta)	1598	prepare_schedule (pTHX_ struct transfer_args *ta)
1491	{	1599	{
1492	SV prev_sv, next_sv;	1600	SV prev_sv, next_sv;
1493		1601
1494	for (;;)	1602	for (;;)
…		…
1520	/* cannot transfer to destroyed coros, skip and look for next */	1628	/* cannot transfer to destroyed coros, skip and look for next */
1521	if (expect_false (ta->next->flags & CF_DESTROYED))	1629	if (expect_false (ta->next->flags & CF_DESTROYED))
1522	{	1630	{
1523	UNLOCK;	1631	UNLOCK;
1524	SvREFCNT_dec (next_sv);	1632	SvREFCNT_dec (next_sv);
1525	/* coro_nready is already taken care of by destroy */	1633	/* coro_nready has already been taken care of by destroy */
1526	continue;	1634	continue;
1527	}	1635	}
1528		1636
1529	--coro_nready;	1637	--coro_nready;
1530	UNLOCK;	1638	UNLOCK;
…		…
1533		1641
1534	/* free this only after the transfer */	1642	/* free this only after the transfer */
1535	prev_sv = SvRV (coro_current);	1643	prev_sv = SvRV (coro_current);
1536	ta->prev = SvSTATE (prev_sv);	1644	ta->prev = SvSTATE (prev_sv);
1537	TRANSFER_CHECK (*ta);	1645	TRANSFER_CHECK (*ta);
1538	assert (ta->next->flags & CF_READY);	1646	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1539	ta->next->flags &= ~CF_READY;	1647	ta->next->flags &= ~CF_READY;
1540	SvRV_set (coro_current, next_sv);	1648	SvRV_set (coro_current, next_sv);
1541		1649
1542	LOCK;	1650	LOCK;
1543	free_coro_mortal (aTHX);	1651	free_coro_mortal (aTHX);
1544	coro_mortal = prev_sv;	1652	coro_mortal = prev_sv;
1545	UNLOCK;	1653	UNLOCK;
1546	}	1654	}
1547		1655
1548	static void	1656	INLINE void
1549	prepare_cede (pTHX_ struct transfer_args *ta)	1657	prepare_cede (pTHX_ struct transfer_args *ta)
1550	{	1658	{
1551	api_ready (coro_current);	1659	api_ready (coro_current);
1552	prepare_schedule (aTHX_ ta);	1660	prepare_schedule (aTHX_ ta);
1553	}	1661	}
1554		1662
1555	static int	1663	static void
1556	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1664	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1557	{	1665	{
		1666	SV *prev = SvRV (coro_current);
		1667
1558	if (coro_nready)	1668	if (coro_nready)
1559	{	1669	{
1560	SV *prev = SvRV (coro_current);
1561	prepare_schedule (aTHX_ ta);	1670	prepare_schedule (aTHX_ ta);
1562	api_ready (prev);	1671	api_ready (prev);
		1672	}
		1673	else
		1674	ta->prev = ta->next = SvSTATE (prev);
		1675	}
		1676
		1677	static void
		1678	api_schedule (void)
		1679	{
		1680	dTHX;
		1681	struct transfer_args ta;
		1682
		1683	prepare_schedule (aTHX_ &ta);
		1684	TRANSFER (ta, 1);
		1685	}
		1686
		1687	static int
		1688	api_cede (void)
		1689	{
		1690	dTHX;
		1691	struct transfer_args ta;
		1692
		1693	prepare_cede (aTHX_ &ta);
		1694
		1695	if (expect_true (ta.prev != ta.next))
		1696	{
		1697	TRANSFER (ta, 1);
1563	return 1;	1698	return 1;
1564	}	1699	}
1565	else	1700	else
1566	return 0;	1701	return 0;
1567	}	1702	}
1568		1703
1569	static void
1570	api_schedule (void)
1571	{
1572	dTHX;
1573	struct transfer_args ta;
1574
1575	prepare_schedule (aTHX_ &ta);
1576	TRANSFER (ta, 1);
1577	}
1578
1579	static int	1704	static int
1580	api_cede (void)	1705	api_cede_notself (void)
1581	{	1706	{
		1707	if (coro_nready)
		1708	{
1582	dTHX;	1709	dTHX;
1583	struct transfer_args ta;	1710	struct transfer_args ta;
1584		1711
1585	prepare_cede (aTHX_ &ta);	1712	prepare_cede_notself (aTHX_ &ta);
1586
1587	if (expect_true (ta.prev != ta.next))
1588	{
1589	TRANSFER (ta, 1);	1713	TRANSFER (ta, 1);
1590	return 1;	1714	return 1;
1591	}	1715	}
1592	else	1716	else
1593	return 0;	1717	return 0;
1594	}	1718	}
1595		1719
1596	static int
1597	api_cede_notself (void)
1598	{
1599	dTHX;
1600	struct transfer_args ta;
1601
1602	if (prepare_cede_notself (aTHX_ &ta))
1603	{
1604	TRANSFER (ta, 1);
1605	return 1;
1606	}
1607	else
1608	return 0;
1609	}
1610
1611	static void	1720	static void
1612	api_trace (SV *coro_sv, int flags)	1721	api_trace (SV *coro_sv, int flags)
1613	{	1722	{
1614	dTHX;	1723	dTHX;
1615	struct coro *coro = SvSTATE (coro_sv);	1724	struct coro *coro = SvSTATE (coro_sv);
1616		1725
1617	if (flags & CC_TRACE)	1726	if (flags & CC_TRACE)
1618	{	1727	{
1619	if (!coro->cctx)	1728	if (!coro->cctx)
1620	coro->cctx = cctx_new ();	1729	coro->cctx = cctx_new_run ();
1621	else if (!(coro->cctx->flags & CC_TRACE))	1730	else if (!(coro->cctx->flags & CC_TRACE))
1622	croak ("cannot enable tracing on coroutine with custom stack");	1731	croak ("cannot enable tracing on coroutine with custom stack");
1623		1732
1624	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1733	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1625	}	1734	}
…		…
1632	else	1741	else
1633	coro->slot->runops = RUNOPS_DEFAULT;	1742	coro->slot->runops = RUNOPS_DEFAULT;
1634	}	1743	}
1635	}	1744	}
1636		1745
		1746	#if 0
1637	static int	1747	static int
1638	coro_gensub_free (pTHX_ SV sv, MAGIC mg)	1748	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1639	{	1749	{
1640	AV *padlist;	1750	AV *padlist;
1641	AV av = (AV )mg->mg_obj;	1751	AV av = (AV )mg->mg_obj;
…		…
1647		1757
1648	static MGVTBL coro_gensub_vtbl = {	1758	static MGVTBL coro_gensub_vtbl = {
1649	0, 0, 0, 0,	1759	0, 0, 0, 0,
1650	coro_gensub_free	1760	coro_gensub_free
1651	};	1761	};
		1762	#endif
1652		1763
1653	/*****************************************************************************/	1764	/*****************************************************************************/
1654	/* PerlIO::cede */	1765	/* PerlIO::cede */
1655		1766
1656	typedef struct	1767	typedef struct
…		…
1723	PerlIOBuf_get_ptr,	1834	PerlIOBuf_get_ptr,
1724	PerlIOBuf_get_cnt,	1835	PerlIOBuf_get_cnt,
1725	PerlIOBuf_set_ptrcnt,	1836	PerlIOBuf_set_ptrcnt,
1726	};	1837	};
1727		1838
		1839	/*****************************************************************************/
		1840
		1841	static const CV slf_cv; / for quick consistency check */
		1842
		1843	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1844	static SV *slf_arg0;
		1845	static SV *slf_arg1;
		1846
		1847	/* this restores the stack in the case we patched the entersub, to */
		1848	/* recreate the stack frame as perl will on following calls */
		1849	/* since entersub cleared the stack */
		1850	static OP *
		1851	pp_restore (pTHX)
		1852	{
		1853	dSP;
		1854
		1855	PUSHMARK (SP);
		1856
		1857	EXTEND (SP, 3);
		1858	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1859	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1860	PUSHs ((SV *)CvGV (slf_cv));
		1861
		1862	RETURNOP (slf_restore.op_first);
		1863	}
		1864
		1865	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
		1866
		1867	/* declare prototype */
		1868	XS(XS_Coro__State__set_stacklevel);
		1869
		1870	/*
		1871	* these not obviously related functions are all rolled into one
		1872	* function to increase chances that they all will call transfer with the same
		1873	* stack offset
		1874	* SLF stands for "schedule-like-function".
		1875	*/
		1876	static OP *
		1877	pp_slf (pTHX)
		1878	{
		1879	dSP;
		1880	struct transfer_args ta;
		1881	SV **arg = PL_stack_base + TOPMARK + 1;
		1882	int items = SP - arg; /* args without function object */
		1883
		1884	/* do a quick consistency check on the "function" object, and if it isn't */
		1885	/* for us, divert to the real entersub */
		1886	if (SvTYPE (sp) != SVt_PVGV \|\| CvXSUB (GvCV (sp)) != XS_Coro__State__set_stacklevel)
		1887	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1888
		1889	/* pop args */
		1890	SP = PL_stack_base + POPMARK;
		1891
		1892	if (!(PL_op->op_flags & OPf_STACKED))
		1893	{
		1894	/* ampersand-form of call, use @_ instead of stack */
		1895	AV *av = GvAV (PL_defgv);
		1896	arg = AvARRAY (av);
		1897	items = AvFILLp (av) + 1;
		1898	}
		1899
		1900	PUTBACK;
		1901	switch (PL_op->op_private & OPpENTERSUB_SLF)
		1902	{
		1903	case 0:
		1904	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1905	break;
		1906
		1907	case 1:
		1908	if (items != 2)
		1909	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1910
		1911	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1912	break;
		1913
		1914	case 2:
		1915	prepare_schedule (aTHX_ &ta);
		1916	break;
		1917
		1918	case 3:
		1919	prepare_cede (aTHX_ &ta);
		1920	break;
		1921
		1922	case 4:
		1923	prepare_cede_notself (aTHX_ &ta);
		1924	break;
		1925
		1926	case 5:
		1927	abort ();
		1928
		1929	default:
		1930	abort ();
		1931	}
		1932
		1933	TRANSFER (ta, 0);
		1934	SPAGAIN;
		1935
		1936	PUTBACK;
		1937	SLF_TAIL;
		1938	SPAGAIN;
		1939	RETURN;
		1940	}
		1941
		1942	static void
		1943	coro_slf_patch (pTHX_ CV cv, int ix, SV *args, int items)
		1944	{
		1945	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1946
		1947	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
		1948	slf_cv = cv;
		1949
		1950	/* we patch the op, and then re-run the whole call */
		1951	/* we have to put the same argument on the stack for this to work */
		1952	/* and this will be done by pp_restore */
		1953	slf_restore.op_next = (OP *)&slf_restore;
		1954	slf_restore.op_type = OP_NULL;
		1955	slf_restore.op_ppaddr = pp_restore;
		1956	slf_restore.op_first = PL_op;
		1957
		1958	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1959	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1960
		1961	PL_op->op_ppaddr = pp_slf;
		1962	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF \| ix; /* we potentially share our private flags with entersub */
		1963
		1964	PL_op = (OP *)&slf_restore;
		1965	}
1728		1966
1729	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1967	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1730		1968
1731	PROTOTYPES: DISABLE	1969	PROTOTYPES: DISABLE
1732		1970
1733	BOOT:	1971	BOOT:
1734	{	1972	{
1735	#ifdef USE_ITHREADS	1973	#ifdef USE_ITHREADS
1736	MUTEX_INIT (&coro_mutex);	1974	MUTEX_INIT (&coro_lock);
		1975	# if CORO_PTHREAD
		1976	coro_thx = PERL_GET_CONTEXT;
		1977	# endif
1737	#endif	1978	#endif
1738	BOOT_PAGESIZE;	1979	BOOT_PAGESIZE;
1739		1980
1740	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);	1981	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
1741	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);	1982	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
…		…
1804	av_push (coro->args, newSVsv (ST (i)));	2045	av_push (coro->args, newSVsv (ST (i)));
1805	}	2046	}
1806	OUTPUT:	2047	OUTPUT:
1807	RETVAL	2048	RETVAL
1808		2049
1809	# these not obviously related functions are all rolled into the same xs
1810	# function to increase chances that they all will call transfer with the same
1811	# stack offset
1812	void	2050	void
1813	_set_stacklevel (...)	2051	_set_stacklevel (...)
1814	ALIAS:	2052	ALIAS:
1815	Coro::State::transfer = 1	2053	Coro::State::transfer = 1
1816	Coro::schedule = 2	2054	Coro::schedule = 2
1817	Coro::cede = 3	2055	Coro::cede = 3
1818	Coro::cede_notself = 4	2056	Coro::cede_notself = 4
1819	CODE:	2057	CODE:
1820	{	2058	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1821	struct transfer_args ta;
1822
1823	PUTBACK;
1824	switch (ix)
1825	{
1826	case 0:
1827	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1828	ta.next = 0;
1829	break;
1830
1831	case 1:
1832	if (items != 2)
1833	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1834
1835	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1836	break;
1837
1838	case 2:
1839	prepare_schedule (aTHX_ &ta);
1840	break;
1841
1842	case 3:
1843	prepare_cede (aTHX_ &ta);
1844	break;
1845
1846	case 4:
1847	if (!prepare_cede_notself (aTHX_ &ta))
1848	XSRETURN_EMPTY;
1849
1850	break;
1851	}
1852	SPAGAIN;
1853
1854	BARRIER;
1855	PUTBACK;
1856	TRANSFER (ta, 0);
1857	SPAGAIN; /* might be the sp of a different coroutine now */
1858	/* be extra careful not to ever do anything after TRANSFER */
1859	}
1860		2059
1861	bool	2060	bool
1862	_destroy (SV *coro_sv)	2061	_destroy (SV *coro_sv)
1863	CODE:	2062	CODE:
1864	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2063	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1872	_exit (code);	2071	_exit (code);
1873		2072
1874	int	2073	int
1875	cctx_stacksize (int new_stacksize = 0)	2074	cctx_stacksize (int new_stacksize = 0)
1876	CODE:	2075	CODE:
1877	RETVAL = coro_stacksize;	2076	RETVAL = cctx_stacksize;
1878	if (new_stacksize)	2077	if (new_stacksize)
		2078	{
1879	coro_stacksize = new_stacksize;	2079	cctx_stacksize = new_stacksize;
		2080	++cctx_gen;
		2081	}
		2082	OUTPUT:
		2083	RETVAL
		2084
		2085	int
		2086	cctx_max_idle (int max_idle = 0)
		2087	CODE:
		2088	RETVAL = cctx_max_idle;
		2089	if (max_idle > 1)
		2090	cctx_max_idle = max_idle;
1880	OUTPUT:	2091	OUTPUT:
1881	RETVAL	2092	RETVAL
1882		2093
1883	int	2094	int
1884	cctx_count ()	2095	cctx_count ()
…		…
1962	RETVAL = boolSV (coro->flags & ix);	2173	RETVAL = boolSV (coro->flags & ix);
1963	OUTPUT:	2174	OUTPUT:
1964	RETVAL	2175	RETVAL
1965		2176
1966	void	2177	void
		2178	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2179	PROTOTYPE: $;$
		2180	CODE:
		2181	SvREFCNT_dec (self->throw);
		2182	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2183
		2184	void
1967	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2185	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
1968		2186
1969	SV *	2187	SV *
1970	has_cctx (Coro::State coro)	2188	has_cctx (Coro::State coro)
1971	PROTOTYPE: $	2189	PROTOTYPE: $
…		…
1980	CODE:	2198	CODE:
1981	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2199	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1982	OUTPUT:	2200	OUTPUT:
1983	RETVAL	2201	RETVAL
1984		2202
1985	IV	2203	UV
1986	rss (Coro::State coro)	2204	rss (Coro::State coro)
1987	PROTOTYPE: $	2205	PROTOTYPE: $
1988	ALIAS:	2206	ALIAS:
1989	usecount = 1	2207	usecount = 1
1990	CODE:	2208	CODE:
…		…
2001	CODE:	2219	CODE:
2002	struct coro *coro = SvSTATE (coro_current);	2220	struct coro *coro = SvSTATE (coro_current);
2003	coro->cctx->idle_sp = 0;	2221	coro->cctx->idle_sp = 0;
2004		2222
2005	void	2223	void
2006	throw (Coro::State self, SV *throw = &PL_sv_undef)
2007	PROTOTYPE: $;$
2008	CODE:
2009	SvREFCNT_dec (self->throw);
2010	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2011
2012	void
2013	swap_defsv (Coro::State self)	2224	swap_defsv (Coro::State self)
2014	PROTOTYPE: $	2225	PROTOTYPE: $
2015	ALIAS:	2226	ALIAS:
2016	swap_defav = 1	2227	swap_defav = 1
2017	CODE:	2228	CODE:
…		…
2049		2260
2050	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2051	coro_ready[i] = newAV ();	2262	coro_ready[i] = newAV ();
2052		2263
2053	{	2264	{
2054	SV *sv = perl_get_sv ("Coro::API", TRUE);	2265	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2055	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2056		2266
2057	coroapi.schedule = api_schedule;	2267	coroapi.schedule = api_schedule;
2058	coroapi.cede = api_cede;	2268	coroapi.cede = api_cede;
2059	coroapi.cede_notself = api_cede_notself;	2269	coroapi.cede_notself = api_cede_notself;
2060	coroapi.ready = api_ready;	2270	coroapi.ready = api_ready;
…		…
2071	void	2281	void
2072	_set_current (SV *current)	2282	_set_current (SV *current)
2073	PROTOTYPE: $	2283	PROTOTYPE: $
2074	CODE:	2284	CODE:
2075	SvREFCNT_dec (SvRV (coro_current));	2285	SvREFCNT_dec (SvRV (coro_current));
2076	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2286	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2077		2287
2078	void	2288	void
2079	_set_readyhook (SV *hook)	2289	_set_readyhook (SV *hook)
2080	PROTOTYPE: $	2290	PROTOTYPE: $
2081	CODE:	2291	CODE:
…		…
2141	SvREFCNT_dec (old);	2351	SvREFCNT_dec (old);
2142	croak ("\3async_pool terminate\2\n");	2352	croak ("\3async_pool terminate\2\n");
2143	}	2353	}
2144		2354
2145	SvREFCNT_dec (coro->saved_deffh);	2355	SvREFCNT_dec (coro->saved_deffh);
2146	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2356	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2147		2357
2148	hv_store (hv, "desc", sizeof ("desc") - 1,	2358	hv_store (hv, "desc", sizeof ("desc") - 1,
2149	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2359	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2150		2360
2151	invoke_av = (AV *)SvRV (invoke);	2361	invoke_av = (AV *)SvRV (invoke);
…		…
2155		2365
2156	if (len > 0)	2366	if (len > 0)
2157	{	2367	{
2158	av_fill (defav, len - 1);	2368	av_fill (defav, len - 1);
2159	for (i = 0; i < len; ++i)	2369	for (i = 0; i < len; ++i)
2160	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2370	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2161	}	2371	}
2162		2372
2163	SvREFCNT_dec (invoke);	2373	SvREFCNT_dec (invoke);
2164	}	2374	}
2165		2375
…		…
2172	sv_setsv (cb, &PL_sv_undef);	2382	sv_setsv (cb, &PL_sv_undef);
2173		2383
2174	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2384	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2175	coro->saved_deffh = 0;	2385	coro->saved_deffh = 0;
2176		2386
2177	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2387	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2178	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2388	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2179	{	2389	{
2180	SV *old = PL_diehook;	2390	SV *old = PL_diehook;
2181	PL_diehook = 0;	2391	PL_diehook = 0;
2182	SvREFCNT_dec (old);	2392	SvREFCNT_dec (old);
…		…
2244	#endif	2454	#endif
2245		2455
2246		2456
2247	MODULE = Coro::State PACKAGE = Coro::AIO	2457	MODULE = Coro::State PACKAGE = Coro::AIO
2248		2458
2249	SV *	2459	void
2250	_get_state ()	2460	_get_state (SV *self)
2251	CODE:	2461	PPCODE:
2252	{	2462	{
2253	struct io_state *data;	2463	AV *defav = GvAV (PL_defgv);
2254		2464	AV *av = newAV ();
		2465	int i;
2255	RETVAL = newSV (sizeof (struct io_state));	2466	SV *data_sv = newSV (sizeof (struct io_state));
2256	data = (struct io_state *)SvPVX (RETVAL);	2467	struct io_state data = (struct io_state )SvPVX (data_sv);
2257	SvCUR_set (RETVAL, sizeof (struct io_state));	2468	SvCUR_set (data_sv, sizeof (struct io_state));
2258	SvPOK_only (RETVAL);	2469	SvPOK_only (data_sv);
2259		2470
2260	data->errorno = errno;	2471	data->errorno = errno;
2261	data->laststype = PL_laststype;	2472	data->laststype = PL_laststype;
2262	data->laststatval = PL_laststatval;	2473	data->laststatval = PL_laststatval;
2263	data->statcache = PL_statcache;	2474	data->statcache = PL_statcache;
		2475
		2476	av_extend (av, AvFILLp (defav) + 1 + 1);
		2477
		2478	for (i = 0; i <= AvFILLp (defav); ++i)
		2479	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2480
		2481	av_push (av, data_sv);
		2482
		2483	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2484
		2485	api_ready (self);
2264	}	2486	}
2265	OUTPUT:
2266	RETVAL
2267		2487
2268	void	2488	void
2269	_set_state (char *data_)	2489	_set_state (SV *state)
2270	PROTOTYPE: $	2490	PROTOTYPE: $
2271	CODE:	2491	PPCODE:
2272	{	2492	{
2273	struct io_state data = (void )data_;	2493	AV av = (AV )SvRV (state);
		2494	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2495	int i;
2274		2496
2275	errno = data->errorno;	2497	errno = data->errorno;
2276	PL_laststype = data->laststype;	2498	PL_laststype = data->laststype;
2277	PL_laststatval = data->laststatval;	2499	PL_laststatval = data->laststatval;
2278	PL_statcache = data->statcache;	2500	PL_statcache = data->statcache;
		2501
		2502	EXTEND (SP, AvFILLp (av));
		2503	for (i = 0; i < AvFILLp (av); ++i)
		2504	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2279	}	2505	}
2280		2506
2281		2507
2282	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2508	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2283		2509
…		…
2312		2538
2313	MODULE = Coro::State PACKAGE = PerlIO::cede	2539	MODULE = Coro::State PACKAGE = PerlIO::cede
2314		2540
2315	BOOT:	2541	BOOT:
2316	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2542	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2543

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Comparing Coro/Coro/State.xs (file contents): Revision 1.248 by root, Mon Sep 29 12:40:50 2008 UTC vs. Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.248 by root, Mon Sep 29 12:40:50 2008 UTC vs.
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC