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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC vs.
Revision 1.270 by root, Fri Nov 14 07:22:11 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) \
…		…
119	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
120	#endif	117	#endif
121		118
122	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
123	* portable way as possible. */	120	* portable way as possible. */
124	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
125	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel
		125	#endif
126		126
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		128
129	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
130	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
133	#else	133	#else
134	# define attribute(x)	134	# define attribute(x)
135	# define BARRIER
136	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
137	#endif	137	#endif
138		138
139	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
140	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
141		141
142	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
143		143
144	#include "CoroAPI.h"	144	#include "CoroAPI.h"
145		145
146	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
147	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
148	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
149	# 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
150	#else	155	#else
		156
151	# define LOCK (void)0	157	# define LOCK (void)0
152	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
153	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
154		166
155	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
156	struct io_state	168	struct io_state
157	{	169	{
158	AV *res;	170	AV *res;
159	int errorno;	171	int errorno;
160	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
161	int laststatval;	173	int laststatval;
162	Stat_t statcache;	174	Stat_t statcache;
163	};	175	};
164		176
165	static double (nvtime)(); / so why doesn't it take void? */	177	static double (nvtime)(); / so why doesn't it take void? */
166		178
		179	static U32 cctx_gen;
167	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
168	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
169	static AV main_mainstack; / used to differentiate between $main and others */	182	static AV main_mainstack; / used to differentiate between $main and others */
170	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
171	static HV coro_state_stash, coro_stash;	184	static HV coro_state_stash, coro_stash;
172	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	};
173		192
174	static GV irsgv; / $/ */	193	static GV irsgv; / $/ */
175	static GV stdoutgv; / STDOUT /	194	static GV stdoutgv; / STDOUT /
176	static SV *rv_diehook;	195	static SV *rv_diehook;
177	static SV *rv_warnhook;	196	static SV *rv_warnhook;
…		…
209	void idle_sp; / sp of top-level transfer/schedule/cede call */	228	void idle_sp; / sp of top-level transfer/schedule/cede call */
210	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 */
211	JMPENV *top_env;	230	JMPENV *top_env;
212	coro_context cctx;	231	coro_context cctx;
213		232
		233	U32 gen;
214	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
215	int valgrind_id;	235	int valgrind_id;
216	#endif	236	#endif
217	unsigned char flags;	237	unsigned char flags;
218	} coro_cctx;	238	} coro_cctx;
…		…
278	#define PRIO_MIN -4	298	#define PRIO_MIN -4
279		299
280	/* for Coro.pm */	300	/* for Coro.pm */
281	static SV *coro_current;	301	static SV *coro_current;
282	static SV *coro_readyhook;	302	static SV *coro_readyhook;
283	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284	static int coro_nready;
285	static struct coro *coro_first;	304	static struct coro *coro_first;
		305	#define coro_nready coroapi.nready
286		306
287	/ lowlevel stuff ********************************************************/	307	/ lowlevel stuff ********************************************************/
288		308
289	static SV *	309	static SV *
290	coro_get_sv (pTHX_ const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
…		…
383	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
384	0, 0, 0, 0,	404	0, 0, 0, 0,
385	coro_cv_free	405	coro_cv_free
386	};	406	};
387		407
388	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
389	SvMAGIC (sv) \	409	SvMAGIC (sv) \
390	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
391	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
392	: mg_find (sv, type) \	412	: mg_find (sv, type) \
393	: 0	413	: 0
394		414
395	#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)
396	#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)
397		417
398	static struct coro *	418	INLINE struct coro *
399	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
400	{	420	{
401	HV *stash;	421	HV *stash;
402	MAGIC *mg;	422	MAGIC *mg;
403		423
…		…
628		648
629	/*	649	/*
630	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
631	*/	651	*/
632	static void	652	static void
633	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
634	{	654	{
635	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
636	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
637		657
638	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
692	#endif	712	#endif
693	}	713	}
694	}	714	}
695		715
696	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;
697	}	744	}
698		745
699	/ coroutine stack handling **********************************************/	746	/ coroutine stack handling **********************************************/
700		747
701	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);	748	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
…		…
820	PL_rs = newSVsv (GvSV (irsgv));	867	PL_rs = newSVsv (GvSV (irsgv));
821	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	868	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822		869
823	{	870	{
824	dSP;	871	dSP;
825	LOGOP myop;	872	UNOP myop;
826		873
827	Zero (&myop, 1, LOGOP);	874	Zero (&myop, 1, UNOP);
828	myop.op_next = Nullop;	875	myop.op_next = Nullop;
829	myop.op_flags = OPf_WANT_VOID;	876	myop.op_flags = OPf_WANT_VOID;
830		877
831	PUSHMARK (SP);	878	PUSHMARK (SP);
832	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
835	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836	SPAGAIN;	883	SPAGAIN;
837	}	884	}
838		885
839	/* 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
840	* likely was suspended in set_stacklevel, called from entersub.	887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
841	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	888	* so we have to emulate entering pp_set_stacklevel here.
842	* so we ENTER here for symmetry
843	*/	889	*/
844	ENTER;	890	SLF_HEAD;
845	}	891	}
846		892
847	static void	893	static void
848	coro_destroy (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
849	{	895	{
850	if (!IN_DESTRUCT)	896	if (!IN_DESTRUCT)
851	{	897	{
852	/* restore all saved variables and stuff */	898	/* restore all saved variables and stuff */
853	LEAVE_SCOPE (0);	899	LEAVE_SCOPE (0);
…		…
875	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
876		922
877	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
878	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro->throw);
879		925
880	coro_destroy_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
881	}	927	}
882		928
883	static void	929	INLINE void
884	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
885	{	931	{
886	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
887	{	933	{
888	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
1012		1058
1013	TAINT_NOT;	1059	TAINT_NOT;
1014	return 0;	1060	return 0;
1015	}	1061	}
1016		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
1017	/* 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 */
1018	/* _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 */
1019	/* during execution of a perl program */	1072	/* during execution of a perl program */
		1073	/* also initialises PL_top_env */
1020	static void NOINLINE	1074	static void NOINLINE
1021	cctx_prepare (pTHX_ coro_cctx *cctx)	1075	cctx_prepare (pTHX_ coro_cctx *cctx)
1022	{	1076	{
1023	dSP;	1077	dSP;
1024	LOGOP myop;	1078	UNOP myop;
1025		1079
1026	PL_top_env = &PL_start_env;	1080	PL_top_env = &PL_start_env;
1027		1081
1028	if (cctx->flags & CC_TRACE)	1082	if (cctx->flags & CC_TRACE)
1029	PL_runops = runops_trace;	1083	PL_runops = runops_trace;
1030		1084
1031	Zero (&myop, 1, LOGOP);	1085	Zero (&myop, 1, UNOP);
1032	myop.op_next = PL_op;	1086	myop.op_next = PL_op;
1033	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1087	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
1034		1088
1035	PUSHMARK (SP);	1089	PUSHMARK (SP);
1036	EXTEND (SP, 2);	1090	EXTEND (SP, 2);
1037	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1038	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1039	PUTBACK;	1093	PUTBACK;
1040	PL_op = (OP *)&myop;	1094	PL_op = (OP *)&myop;
1041	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1042	SPAGAIN;	1096	SPAGAIN;
1043	}	1097	}
1044		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
1045	/*	1120	/*
1046	* this is a _very_ stripped down perl interpreter ;)	1121	* this is a _very_ stripped down perl interpreter ;)
1047	*/	1122	*/
1048	static void	1123	static void
1049	cctx_run (void *arg)	1124	cctx_run (void *arg)
1050	{	1125	{
		1126	#ifdef USE_ITHREADS
		1127	# if CORO_PTHREAD
		1128	PERL_SET_CONTEXT (coro_thx);
		1129	# endif
		1130	#endif
		1131	{
1051	dTHX;	1132	dTHX;
1052		1133
1053	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1134	/* we are the alternative tail to pp_set_stacklevel */
1054	UNLOCK;	1135	/* so do the same things here */
		1136	SLF_TAIL;
1055		1137
1056	/* we now skip the entersub that lead to transfer() */	1138	/* we now skip the op that did lead to transfer() */
1057	PL_op = PL_op->op_next;	1139	PL_op = PL_op->op_next;
1058		1140
1059	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
1060	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
1061		1143
		1144	/* cctx_run is the alternative tail of transfer() */
		1145	transfer_tail (aTHX);
		1146
1062	/* 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 */
1063	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1064	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
1065		1150
1066	/*	1151	/*
1067	* 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
1068	* 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)
1069	* 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
1070	* bootstrap-time "top" top_env, as we cannot restore the "main"	1155	* bootstrap-time "top" top_env, as we cannot restore the "main"
1071	* coroutine as Coro has no such concept	1156	* coroutine as Coro has no such concept
1072	*/	1157	*/
1073	PL_top_env = main_top_env;	1158	PL_top_env = main_top_env;
1074	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	}
1075	}	1161	}
1076		1162
1077	static coro_cctx *	1163	static coro_cctx *
1078	cctx_new ()	1164	cctx_new ()
1079	{	1165	{
1080	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 ();
1081	void *stack_start;	1195	void *stack_start;
1082	size_t stack_size;	1196	size_t stack_size;
1083		1197
1084	++cctx_count;
1085
1086	Newz (0, cctx, 1, coro_cctx);
1087
1088	#if HAVE_MMAP	1198	#if HAVE_MMAP
1089	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;
1090	/* mmap supposedly does allocate-on-write for us */	1200	/* mmap supposedly does allocate-on-write for us */
1091	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);
1092		1202
1093	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1094	{	1204	{
1095	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1096	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097	# endif	1207	#endif
1098	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1099	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100	cctx->flags \|= CC_MAPPED;	1210	cctx->flags \|= CC_MAPPED;
1101	}	1211	}
1102	else	1212	else
1103	#endif	1213	#endif
1104	{	1214	{
1105	cctx->ssize = coro_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106	New (0, cctx->sptr, coro_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1107		1217
1108	if (!cctx->sptr)	1218	if (!cctx->sptr)
1109	{	1219	{
1110	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1112	}	1222	}
1113		1223
1114	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1115	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1116	}	1226	}
1117		1227
1118	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
1119	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);
1120		1233
1121	return cctx;	1234	return cctx;
1122	}	1235	}
1123		1236
…		…
1126	{	1239	{
1127	if (!cctx)	1240	if (!cctx)
1128	return;	1241	return;
1129		1242
1130	--cctx_count;	1243	--cctx_count;
		1244	coro_destroy (&cctx->cctx);
1131		1245
		1246	/* coro_transfer creates new, empty cctx's */
		1247	if (cctx->sptr)
		1248	{
1132	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1133	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1134	#endif	1251	#endif
1135		1252
1136	#if HAVE_MMAP	1253	#if HAVE_MMAP
1137	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1138	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1139	else	1256	else
1140	#endif	1257	#endif
1141	Safefree (cctx->sptr);	1258	Safefree (cctx->sptr);
		1259	}
1142		1260
1143	Safefree (cctx);	1261	Safefree (cctx);
1144	}	1262	}
1145		1263
1146	/* wether this cctx should be destructed */	1264	/* wether this cctx should be destructed */
1147	#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))
1148		1266
1149	static coro_cctx *	1267	static coro_cctx *
1150	cctx_get (pTHX)	1268	cctx_get (pTHX)
1151	{	1269	{
1152	while (expect_true (cctx_first))	1270	while (expect_true (cctx_first))
…		…
1159	return cctx;	1277	return cctx;
1160		1278
1161	cctx_destroy (cctx);	1279	cctx_destroy (cctx);
1162	}	1280	}
1163		1281
1164	return cctx_new ();	1282	return cctx_new_run ();
1165	}	1283	}
1166		1284
1167	static void	1285	static void
1168	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1169	{	1287	{
		1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1289
1170	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1171	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1172	{	1292	{
1173	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
1174	cctx_first = first->next;	1294	cctx_first = first->next;
1175	--cctx_idle;	1295	--cctx_idle;
1176		1296
…		…
1208	/* always use the TRANSFER macro */	1328	/* always use the TRANSFER macro */
1209	static void NOINLINE	1329	static void NOINLINE
1210	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1330	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1211	{	1331	{
1212	dSTACKLEVEL;	1332	dSTACKLEVEL;
1213	static volatile int has_throw;
1214		1333
1215	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1216	if (expect_false (!next))	1335	if (expect_false (!next))
1217	{	1336	{
1218	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1219	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 */
1220	}	1339	}
1221	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1222	{	1341	{
1223	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
1224		1343
1225	if (expect_false (prev->flags & CF_NEW))	1344	if (expect_false (prev->flags & CF_NEW))
1226	{	1345	{
1227	/* create a new empty context */	1346	/* create a new empty/source context */
1228	Newz (0, prev->cctx, 1, coro_cctx);	1347	prev->cctx = cctx_new_empty ();
1229	prev->flags &= ~CF_NEW;	1348	prev->flags &= ~CF_NEW;
1230	prev->flags \|= CF_RUNNING;	1349	prev->flags \|= CF_RUNNING;
1231	}	1350	}
1232		1351
1233	prev->flags &= ~CF_RUNNING;	1352	prev->flags &= ~CF_RUNNING;
…		…
1248	else	1367	else
1249	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1250		1369
1251	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1252		1371
1253	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1254	if (expect_true (	1373	if (expect_true (
1255	prev__cctx->idle_sp == STACKLEVEL	1374	prev__cctx->idle_sp == stacklevel
1256	&& !(prev__cctx->flags & CC_TRACE)	1375	&& !(prev__cctx->flags & CC_TRACE)
1257	&& !force_cctx	1376	&& !force_cctx
1258	))	1377	))
1259	{	1378	{
1260	/* 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 */
1261	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));
1262		1381
1263	prev->cctx = 0;	1382	prev->cctx = 0;
1264		1383
1265	/* 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 */
1266	/* 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 */
…		…
1274	++next->usecount;	1393	++next->usecount;
1275		1394
1276	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1277	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1278		1397
1279	has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1280		1400
1281	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1282	{	1402	{
1283	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1284	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1285	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1286	}	1406	}
1287		1407
1288	free_coro_mortal (aTHX);	1408	transfer_tail (aTHX);
1289	UNLOCK;
1290
1291	if (expect_false (has_throw))
1292	{
1293	struct coro *coro = SvSTATE (coro_current);
1294
1295	if (coro->throw)
1296	{
1297	SV *exception = coro->throw;
1298	coro->throw = 0;
1299	sv_setsv (ERRSV, exception);
1300	croak (0);
1301	}
1302	}
1303	}	1409	}
1304	}	1410	}
1305
1306	struct transfer_args
1307	{
1308	struct coro prev, next;
1309	};
1310		1411
1311	#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))
1312	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313		1414
1314	/ high level stuff ******************************************************/	1415	/ high level stuff ******************************************************/
…		…
1340	croak ("FATAL: tried to destroy currently running coroutine");	1441	croak ("FATAL: tried to destroy currently running coroutine");
1341		1442
1342	save_perl (aTHX_ &temp);	1443	save_perl (aTHX_ &temp);
1343	load_perl (aTHX_ coro);	1444	load_perl (aTHX_ coro);
1344		1445
1345	coro_destroy (aTHX_ coro);	1446	coro_destruct (aTHX_ coro);
1346		1447
1347	load_perl (aTHX_ &temp);	1448	load_perl (aTHX_ &temp);
1348		1449
1349	coro->slot = 0;	1450	coro->slot = 0;
1350	}	1451	}
…		…
1404	ta->next = SvSTATE (next_sv);	1505	ta->next = SvSTATE (next_sv);
1405	TRANSFER_CHECK (*ta);	1506	TRANSFER_CHECK (*ta);
1406	}	1507	}
1407		1508
1408	static void	1509	static void
1409	api_transfer (SV prev_sv, SV next_sv)	1510	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1410	{	1511	{
1411	dTHX;
1412	struct transfer_args ta;	1512	struct transfer_args ta;
1413		1513
1414	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415	TRANSFER (ta, 1);	1515	TRANSFER (ta, 1);
1416	}	1516	}
…		…
1434		1534
1435	return 0;	1535	return 0;
1436	}	1536	}
1437		1537
1438	static int	1538	static int
1439	api_ready (SV *coro_sv)	1539	api_ready (pTHX_ SV *coro_sv)
1440	{	1540	{
1441	dTHX;
1442	struct coro *coro;	1541	struct coro *coro;
1443	SV *sv_hook;	1542	SV *sv_hook;
1444	void (*xs_hook)(void);	1543	void (*xs_hook)(void);
1445		1544
1446	if (SvROK (coro_sv))	1545	if (SvROK (coro_sv))
…		…
1484		1583
1485	return 1;	1584	return 1;
1486	}	1585	}
1487		1586
1488	static int	1587	static int
1489	api_is_ready (SV *coro_sv)	1588	api_is_ready (pTHX_ SV *coro_sv)
1490	{	1589	{
1491	dTHX;
1492	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1590	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493	}	1591	}
1494		1592
1495	static void	1593	INLINE void
1496	prepare_schedule (pTHX_ struct transfer_args *ta)	1594	prepare_schedule (pTHX_ struct transfer_args *ta)
1497	{	1595	{
1498	SV prev_sv, next_sv;	1596	SV prev_sv, next_sv;
1499		1597
1500	for (;;)	1598	for (;;)
…		…
1526	/* cannot transfer to destroyed coros, skip and look for next */	1624	/* cannot transfer to destroyed coros, skip and look for next */
1527	if (expect_false (ta->next->flags & CF_DESTROYED))	1625	if (expect_false (ta->next->flags & CF_DESTROYED))
1528	{	1626	{
1529	UNLOCK;	1627	UNLOCK;
1530	SvREFCNT_dec (next_sv);	1628	SvREFCNT_dec (next_sv);
1531	/* coro_nready is already taken care of by destroy */	1629	/* coro_nready has already been taken care of by destroy */
1532	continue;	1630	continue;
1533	}	1631	}
1534		1632
1535	--coro_nready;	1633	--coro_nready;
1536	UNLOCK;	1634	UNLOCK;
…		…
1539		1637
1540	/* free this only after the transfer */	1638	/* free this only after the transfer */
1541	prev_sv = SvRV (coro_current);	1639	prev_sv = SvRV (coro_current);
1542	ta->prev = SvSTATE (prev_sv);	1640	ta->prev = SvSTATE (prev_sv);
1543	TRANSFER_CHECK (*ta);	1641	TRANSFER_CHECK (*ta);
1544	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));
1545	ta->next->flags &= ~CF_READY;	1643	ta->next->flags &= ~CF_READY;
1546	SvRV_set (coro_current, next_sv);	1644	SvRV_set (coro_current, next_sv);
1547		1645
1548	LOCK;	1646	LOCK;
1549	free_coro_mortal (aTHX);	1647	free_coro_mortal (aTHX);
1550	coro_mortal = prev_sv;	1648	coro_mortal = prev_sv;
1551	UNLOCK;	1649	UNLOCK;
1552	}	1650	}
1553		1651
		1652	INLINE void
		1653	prepare_cede (pTHX_ struct transfer_args *ta)
		1654	{
		1655	api_ready (aTHX_ coro_current);
		1656	prepare_schedule (aTHX_ ta);
		1657	}
		1658
1554	static void	1659	static void
1555	prepare_cede (pTHX_ struct transfer_args *ta)	1660	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1556	{	1661	{
1557	api_ready (coro_current);	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	ta->prev = ta->next = SvSTATE (prev);
		1671	}
		1672
		1673	static void
		1674	api_schedule (pTHX)
		1675	{
		1676	struct transfer_args ta;
		1677
1558	prepare_schedule (aTHX_ ta);	1678	prepare_schedule (aTHX_ &ta);
		1679	TRANSFER (ta, 1);
1559	}	1680	}
1560		1681
1561	static int	1682	static int
1562	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1683	api_cede (pTHX)
1563	{	1684	{
1564	if (coro_nready)	1685	struct transfer_args ta;
1565	{	1686
1566	SV *prev = SvRV (coro_current);
1567	prepare_schedule (aTHX_ ta);	1687	prepare_cede (aTHX_ &ta);
1568	api_ready (prev);	1688
		1689	if (expect_true (ta.prev != ta.next))
		1690	{
		1691	TRANSFER (ta, 1);
1569	return 1;	1692	return 1;
1570	}	1693	}
1571	else	1694	else
1572	return 0;	1695	return 0;
1573	}	1696	}
1574		1697
1575	static void
1576	api_schedule (void)
1577	{
1578	dTHX;
1579	struct transfer_args ta;
1580
1581	prepare_schedule (aTHX_ &ta);
1582	TRANSFER (ta, 1);
1583	}
1584
1585	static int	1698	static int
1586	api_cede (void)	1699	api_cede_notself (pTHX)
1587	{	1700	{
1588	dTHX;	1701	if (coro_nready)
		1702	{
1589	struct transfer_args ta;	1703	struct transfer_args ta;
1590		1704
1591	prepare_cede (aTHX_ &ta);	1705	prepare_cede_notself (aTHX_ &ta);
1592
1593	if (expect_true (ta.prev != ta.next))
1594	{
1595	TRANSFER (ta, 1);	1706	TRANSFER (ta, 1);
1596	return 1;	1707	return 1;
1597	}	1708	}
1598	else	1709	else
1599	return 0;	1710	return 0;
1600	}	1711	}
1601		1712
1602	static int
1603	api_cede_notself (void)
1604	{
1605	dTHX;
1606	struct transfer_args ta;
1607
1608	if (prepare_cede_notself (aTHX_ &ta))
1609	{
1610	TRANSFER (ta, 1);
1611	return 1;
1612	}
1613	else
1614	return 0;
1615	}
1616
1617	static void	1713	static void
1618	api_trace (SV *coro_sv, int flags)	1714	api_trace (pTHX_ SV *coro_sv, int flags)
1619	{	1715	{
1620	dTHX;
1621	struct coro *coro = SvSTATE (coro_sv);	1716	struct coro *coro = SvSTATE (coro_sv);
1622		1717
1623	if (flags & CC_TRACE)	1718	if (flags & CC_TRACE)
1624	{	1719	{
1625	if (!coro->cctx)	1720	if (!coro->cctx)
1626	coro->cctx = cctx_new ();	1721	coro->cctx = cctx_new_run ();
1627	else if (!(coro->cctx->flags & CC_TRACE))	1722	else if (!(coro->cctx->flags & CC_TRACE))
1628	croak ("cannot enable tracing on coroutine with custom stack");	1723	croak ("cannot enable tracing on coroutine with custom stack");
1629		1724
1630	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1725	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1631	}	1726	}
…		…
1638	else	1733	else
1639	coro->slot->runops = RUNOPS_DEFAULT;	1734	coro->slot->runops = RUNOPS_DEFAULT;
1640	}	1735	}
1641	}	1736	}
1642		1737
		1738	#if 0
1643	static int	1739	static int
1644	coro_gensub_free (pTHX_ SV sv, MAGIC mg)	1740	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1645	{	1741	{
1646	AV *padlist;	1742	AV *padlist;
1647	AV av = (AV )mg->mg_obj;	1743	AV av = (AV )mg->mg_obj;
…		…
1653		1749
1654	static MGVTBL coro_gensub_vtbl = {	1750	static MGVTBL coro_gensub_vtbl = {
1655	0, 0, 0, 0,	1751	0, 0, 0, 0,
1656	coro_gensub_free	1752	coro_gensub_free
1657	};	1753	};
		1754	#endif
1658		1755
1659	/*****************************************************************************/	1756	/*****************************************************************************/
1660	/* PerlIO::cede */	1757	/* PerlIO::cede */
1661		1758
1662	typedef struct	1759	typedef struct
…		…
1690	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1787	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691	double now = nvtime ();	1788	double now = nvtime ();
1692		1789
1693	if (now >= self->next)	1790	if (now >= self->next)
1694	{	1791	{
1695	api_cede ();	1792	api_cede (aTHX);
1696	self->next = now + self->every;	1793	self->next = now + self->every;
1697	}	1794	}
1698		1795
1699	return PerlIOBuf_flush (aTHX_ f);	1796	return PerlIOBuf_flush (aTHX_ f);
1700	}	1797	}
…		…
1729	PerlIOBuf_get_ptr,	1826	PerlIOBuf_get_ptr,
1730	PerlIOBuf_get_cnt,	1827	PerlIOBuf_get_cnt,
1731	PerlIOBuf_set_ptrcnt,	1828	PerlIOBuf_set_ptrcnt,
1732	};	1829	};
1733		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	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
		1858
		1859	enum {
		1860	CORO_SLF_CUSTOM = 0,
		1861	CORO_SLF_SET_STACKLEVEL = 1,
		1862	CORO_SLF_TRANSFER = 2
		1863	};
		1864
		1865	/* declare prototype */
		1866	XS(XS_Coro__State__set_stacklevel);
		1867
		1868	/*
		1869	* these not obviously related functions are all rolled into one
		1870	* function to increase chances that they all will call transfer with the same
		1871	* stack offset
		1872	* SLF stands for "schedule-like-function".
		1873	*/
		1874	static OP *
		1875	pp_slf (pTHX)
		1876	{
		1877	dSP;
		1878	struct transfer_args ta;
		1879	SV **arg = PL_stack_base + TOPMARK + 1;
		1880	int items = SP - arg; /* args without function object */
		1881	int ix = PL_op->op_private & OPpENTERSUB_SLF;
		1882	struct CoroSLF *slf = 0;
		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
		1902	if (!ix)
		1903	{
		1904	slf = (struct CoroSLF )CvSTART (GvCV (sp));
		1905	ix = slf->prepare (aTHX_ arg, items);
		1906	}
		1907
		1908	switch (ix)
		1909	{
		1910	case CORO_SLF_SET_STACKLEVEL:
		1911	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1912	break;
		1913
		1914	case CORO_SLF_TRANSFER:
		1915	if (items != 2)
		1916	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1917
		1918	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1919	break;
		1920
		1921	case CORO_SLF_SCHEDULE:
		1922	prepare_schedule (aTHX_ &ta);
		1923	break;
		1924
		1925	case CORO_SLF_CEDE:
		1926	prepare_cede (aTHX_ &ta);
		1927	break;
		1928
		1929	case CORO_SLF_CEDE_NOTSELF:
		1930	prepare_cede_notself (aTHX_ &ta);
		1931	break;
		1932
		1933	default:
		1934	abort ();
		1935	}
		1936
		1937	do
		1938	TRANSFER (ta, 0);
		1939	while (slf && slf->check (aTHX));
		1940
		1941	SPAGAIN;
		1942
		1943	PUTBACK;
		1944	SLF_TAIL;
		1945	SPAGAIN;
		1946	RETURN;
		1947	}
		1948
		1949	static void
		1950	coro_slf_patch (pTHX_ CV cv, int ix, SV *args, int items)
		1951	{
		1952	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1953
		1954	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
		1955	slf_cv = cv;
		1956
		1957	/* we patch the op, and then re-run the whole call */
		1958	/* we have to put the same argument on the stack for this to work */
		1959	/* and this will be done by pp_restore */
		1960	slf_restore.op_next = (OP *)&slf_restore;
		1961	slf_restore.op_type = OP_NULL;
		1962	slf_restore.op_ppaddr = pp_restore;
		1963	slf_restore.op_first = PL_op;
		1964
		1965	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1966	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1967
		1968	PL_op->op_ppaddr = pp_slf;
		1969	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF \| ix; /* we potentially share our private flags with entersub */
		1970
		1971	PL_op = (OP *)&slf_restore;
		1972	}
1734		1973
1735	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1974	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736		1975
1737	PROTOTYPES: DISABLE	1976	PROTOTYPES: DISABLE
1738		1977
1739	BOOT:	1978	BOOT:
1740	{	1979	{
1741	#ifdef USE_ITHREADS	1980	#ifdef USE_ITHREADS
1742	MUTEX_INIT (&coro_mutex);	1981	MUTEX_INIT (&coro_lock);
		1982	# if CORO_PTHREAD
		1983	coro_thx = PERL_GET_CONTEXT;
		1984	# endif
1743	#endif	1985	#endif
1744	BOOT_PAGESIZE;	1986	BOOT_PAGESIZE;
1745		1987
1746	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);	1988	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
1747	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);	1989	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
…		…
1810	av_push (coro->args, newSVsv (ST (i)));	2052	av_push (coro->args, newSVsv (ST (i)));
1811	}	2053	}
1812	OUTPUT:	2054	OUTPUT:
1813	RETVAL	2055	RETVAL
1814		2056
1815	# these not obviously related functions are all rolled into the same xs
1816	# function to increase chances that they all will call transfer with the same
1817	# stack offset
1818	void	2057	void
1819	_set_stacklevel (...)	2058	_set_stacklevel (...)
1820	ALIAS:	2059	ALIAS:
		2060	_set_stacklevel = CORO_SLF_SET_STACKLEVEL
1821	Coro::State::transfer = 1	2061	Coro::State::transfer = CORO_SLF_TRANSFER
1822	Coro::schedule = 2	2062	Coro::schedule = CORO_SLF_SCHEDULE
1823	Coro::cede = 3	2063	Coro::cede = CORO_SLF_CEDE
1824	Coro::cede_notself = 4	2064	Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
1825	CODE:	2065	CODE:
1826	{	2066	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1827	struct transfer_args ta;
1828
1829	PUTBACK;
1830	switch (ix)
1831	{
1832	case 0:
1833	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1834	ta.next = 0;
1835	break;
1836
1837	case 1:
1838	if (items != 2)
1839	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1840
1841	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842	break;
1843
1844	case 2:
1845	prepare_schedule (aTHX_ &ta);
1846	break;
1847
1848	case 3:
1849	prepare_cede (aTHX_ &ta);
1850	break;
1851
1852	case 4:
1853	if (!prepare_cede_notself (aTHX_ &ta))
1854	XSRETURN_EMPTY;
1855
1856	break;
1857	}
1858	SPAGAIN;
1859
1860	BARRIER;
1861	PUTBACK;
1862	TRANSFER (ta, 0);
1863	SPAGAIN; /* might be the sp of a different coroutine now */
1864	/* be extra careful not to ever do anything after TRANSFER */
1865	}
1866		2067
1867	bool	2068	bool
1868	_destroy (SV *coro_sv)	2069	_destroy (SV *coro_sv)
1869	CODE:	2070	CODE:
1870	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2071	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1878	_exit (code);	2079	_exit (code);
1879		2080
1880	int	2081	int
1881	cctx_stacksize (int new_stacksize = 0)	2082	cctx_stacksize (int new_stacksize = 0)
1882	CODE:	2083	CODE:
1883	RETVAL = coro_stacksize;	2084	RETVAL = cctx_stacksize;
1884	if (new_stacksize)	2085	if (new_stacksize)
		2086	{
1885	coro_stacksize = new_stacksize;	2087	cctx_stacksize = new_stacksize;
		2088	++cctx_gen;
		2089	}
		2090	OUTPUT:
		2091	RETVAL
		2092
		2093	int
		2094	cctx_max_idle (int max_idle = 0)
		2095	CODE:
		2096	RETVAL = cctx_max_idle;
		2097	if (max_idle > 1)
		2098	cctx_max_idle = max_idle;
1886	OUTPUT:	2099	OUTPUT:
1887	RETVAL	2100	RETVAL
1888		2101
1889	int	2102	int
1890	cctx_count ()	2103	cctx_count ()
…		…
1968	RETVAL = boolSV (coro->flags & ix);	2181	RETVAL = boolSV (coro->flags & ix);
1969	OUTPUT:	2182	OUTPUT:
1970	RETVAL	2183	RETVAL
1971		2184
1972	void	2185	void
		2186	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2187	PROTOTYPE: $;$
		2188	CODE:
		2189	SvREFCNT_dec (self->throw);
		2190	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2191
		2192	void
1973	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2193	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2194	C_ARGS: aTHX_ coro, flags
1974		2195
1975	SV *	2196	SV *
1976	has_cctx (Coro::State coro)	2197	has_cctx (Coro::State coro)
1977	PROTOTYPE: $	2198	PROTOTYPE: $
1978	CODE:	2199	CODE:
…		…
1986	CODE:	2207	CODE:
1987	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2208	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988	OUTPUT:	2209	OUTPUT:
1989	RETVAL	2210	RETVAL
1990		2211
1991	IV	2212	UV
1992	rss (Coro::State coro)	2213	rss (Coro::State coro)
1993	PROTOTYPE: $	2214	PROTOTYPE: $
1994	ALIAS:	2215	ALIAS:
1995	usecount = 1	2216	usecount = 1
1996	CODE:	2217	CODE:
…		…
2007	CODE:	2228	CODE:
2008	struct coro *coro = SvSTATE (coro_current);	2229	struct coro *coro = SvSTATE (coro_current);
2009	coro->cctx->idle_sp = 0;	2230	coro->cctx->idle_sp = 0;
2010		2231
2011	void	2232	void
2012	throw (Coro::State self, SV *throw = &PL_sv_undef)
2013	PROTOTYPE: $;$
2014	CODE:
2015	SvREFCNT_dec (self->throw);
2016	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2017
2018	void
2019	swap_defsv (Coro::State self)	2233	swap_defsv (Coro::State self)
2020	PROTOTYPE: $	2234	PROTOTYPE: $
2021	ALIAS:	2235	ALIAS:
2022	swap_defav = 1	2236	swap_defav = 1
2023	CODE:	2237	CODE:
…		…
2055		2269
2056	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2270	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2057	coro_ready[i] = newAV ();	2271	coro_ready[i] = newAV ();
2058		2272
2059	{	2273	{
2060	SV *sv = perl_get_sv ("Coro::API", TRUE);	2274	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2061	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2062		2275
2063	coroapi.schedule = api_schedule;	2276	coroapi.schedule = api_schedule;
2064	coroapi.cede = api_cede;	2277	coroapi.cede = api_cede;
2065	coroapi.cede_notself = api_cede_notself;	2278	coroapi.cede_notself = api_cede_notself;
2066	coroapi.ready = api_ready;	2279	coroapi.ready = api_ready;
2067	coroapi.is_ready = api_is_ready;	2280	coroapi.is_ready = api_is_ready;
2068	coroapi.nready = &coro_nready;	2281	coroapi.nready = coro_nready;
2069	coroapi.current = coro_current;	2282	coroapi.current = coro_current;
2070		2283
2071	GCoroAPI = &coroapi;	2284	GCoroAPI = &coroapi;
2072	sv_setiv (sv, (IV)&coroapi);	2285	sv_setiv (sv, (IV)&coroapi);
2073	SvREADONLY_on (sv);	2286	SvREADONLY_on (sv);
…		…
2114		2327
2115	SV *	2328	SV *
2116	ready (SV *self)	2329	ready (SV *self)
2117	PROTOTYPE: $	2330	PROTOTYPE: $
2118	CODE:	2331	CODE:
2119	RETVAL = boolSV (api_ready (self));	2332	RETVAL = boolSV (api_ready (aTHX_ self));
2120	OUTPUT:	2333	OUTPUT:
2121	RETVAL	2334	RETVAL
2122		2335
2123	int	2336	int
2124	nready (...)	2337	nready (...)
…		…
2178	sv_setsv (cb, &PL_sv_undef);	2391	sv_setsv (cb, &PL_sv_undef);
2179		2392
2180	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2393	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2181	coro->saved_deffh = 0;	2394	coro->saved_deffh = 0;
2182		2395
2183	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2396	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2184	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2397	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185	{	2398	{
2186	SV *old = PL_diehook;	2399	SV *old = PL_diehook;
2187	PL_diehook = 0;	2400	PL_diehook = 0;
2188	SvREFCNT_dec (old);	2401	SvREFCNT_dec (old);
…		…
2194	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2407	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195		2408
2196	coro->prio = 0;	2409	coro->prio = 0;
2197		2410
2198	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2411	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199	api_trace (coro_current, 0);	2412	api_trace (aTHX_ coro_current, 0);
2200		2413
2201	av_push (av_async_pool, newSVsv (coro_current));	2414	av_push (av_async_pool, newSVsv (coro_current));
2202	}	2415	}
2203		2416
2204	#if 0	2417	#if 0
…		…
2276		2489
2277	av_push (av, data_sv);	2490	av_push (av, data_sv);
2278		2491
2279	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2492	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280		2493
2281	api_ready (self);	2494	api_ready (aTHX_ self);
2282	}	2495	}
2283		2496
2284	void	2497	void
2285	_set_state (SV *state)	2498	_set_state (SV *state)
2286	PROTOTYPE: $	2499	PROTOTYPE: $
…		…
2311	PROTOTYPE: @	2524	PROTOTYPE: @
2312	CODE:	2525	CODE:
2313	{	2526	{
2314	static int incede;	2527	static int incede;
2315		2528
2316	api_cede_notself ();	2529	api_cede_notself (aTHX);
2317		2530
2318	++incede;	2531	++incede;
2319	while (coro_nready >= incede && api_cede ())	2532	while (coro_nready >= incede && api_cede (aTHX))
2320	;	2533	;
2321		2534
2322	sv_setsv (sv_activity, &PL_sv_undef);	2535	sv_setsv (sv_activity, &PL_sv_undef);
2323	if (coro_nready >= incede)	2536	if (coro_nready >= incede)
2324	{	2537	{
…		…
2334		2547
2335	MODULE = Coro::State PACKAGE = PerlIO::cede	2548	MODULE = Coro::State PACKAGE = PerlIO::cede
2336		2549
2337	BOOT:	2550	BOOT:
2338	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2551	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2552

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Comparing Coro/Coro/State.xs (file contents): Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC vs. Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC vs.
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC