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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.262 by root, Mon Nov 10 20:38:19 2008 UTC vs.
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC

…		…
46	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
47	#endif	47	#endif
48		48
49	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
50	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
51	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52	#else
53	# define REGISTER_STACK(cctx,start,end)
54	#endif	51	#endif
55		52
56	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
57	static int cctx_max_idle = 4;	54	static int cctx_max_idle = 4;
58		55
…		…
119	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
120	#endif	117	#endif
121		118
122	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
123	* portable way as possible. */	120	* portable way as possible. */
124	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
125	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel
		125	#endif
126		126
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		128
129	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
130	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
133	#else	133	#else
134	# define attribute(x)	134	# define attribute(x)
135	# define BARRIER
136	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
137	#endif	137	#endif
138		138
139	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
140	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
141		141
142	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
143		143
144	#include "CoroAPI.h"	144	#include "CoroAPI.h"
145		145
146	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
147
148	static perl_mutex coro_lock;
149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151	# if CORO_PTHREAD	147	# if CORO_PTHREAD
152	static void *coro_thx;	148	static void *coro_thx;
153	# endif	149	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	150	#endif
161
162	# undef LOCK
163	# define LOCK (void)0
164	# undef UNLOCK
165	# define UNLOCK (void)0
166		151
167	/* helper storage struct for Coro::AIO */	152	/* helper storage struct for Coro::AIO */
168	struct io_state	153	struct io_state
169	{	154	{
170	AV *res;	155	AV *res;
…		…
183	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
184	static HV coro_state_stash, coro_stash;	169	static HV coro_state_stash, coro_stash;
185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	170	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;	171	static volatile struct coro *transfer_next;
187		172
188	struct transfer_args
189	{
190	struct coro prev, next;
191	};
192
193	static GV irsgv; / $/ */	173	static GV irsgv; / $/ */
194	static GV stdoutgv; / STDOUT /	174	static GV stdoutgv; / STDOUT /
195	static SV *rv_diehook;	175	static SV *rv_diehook;
196	static SV *rv_warnhook;	176	static SV *rv_warnhook;
197	static HV hv_sig; / %SIG */	177	static HV hv_sig; / %SIG */
…		…
215	CC_TRACE_LINE = 0x10, /* trace each statement */	195	CC_TRACE_LINE = 0x10, /* trace each statement */
216	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	196	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
217	};	197	};
218		198
219	/* this is a structure representing a c-level coroutine */	199	/* this is a structure representing a c-level coroutine */
220	typedef struct coro_cctx {	200	typedef struct coro_cctx
		201	{
221	struct coro_cctx *next;	202	struct coro_cctx *next;
222		203
223	/* the stack */	204	/* the stack */
224	void *sptr;	205	void *sptr;
225	size_t ssize;	206	size_t ssize;
…		…
243	CF_NEW = 0x0004, /* has never been switched to */	224	CF_NEW = 0x0004, /* has never been switched to */
244	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	225	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245	};	226	};
246		227
247	/* the structure where most of the perl state is stored, overlaid on the cxstack */	228	/* the structure where most of the perl state is stored, overlaid on the cxstack */
248	typedef struct {	229	typedef struct
		230	{
249	SV *defsv;	231	SV *defsv;
250	AV *defav;	232	AV *defav;
251	SV *errsv;	233	SV *errsv;
252	SV *irsgv;	234	SV *irsgv;
253	#define VAR(name,type) type name;	235	#define VAR(name,type) type name;
…		…
257		239
258	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	240	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259		241
260	/* this is a structure representing a perl-level coroutine */	242	/* this is a structure representing a perl-level coroutine */
261	struct coro {	243	struct coro {
262	/* the c coroutine allocated to this perl coroutine, if any */	244	/* the C coroutine allocated to this perl coroutine, if any */
263	coro_cctx *cctx;	245	coro_cctx *cctx;
264		246
265	/* process data */	247	/* process data */
		248	struct CoroSLF slf_frame; /* saved slf frame */
266	AV *mainstack;	249	AV *mainstack;
267	perl_slots slot; / basically the saved sp */	250	perl_slots slot; / basically the saved sp */
268		251
269	AV args; / data associated with this coroutine (initial args) */	252	AV args; / data associated with this coroutine (initial args) */
270	int refcnt; /* coroutines are refcounted, yes */	253	int refcnt; /* coroutines are refcounted, yes */
271	int flags; /* CF_ flags */	254	int flags; /* CF_ flags */
272	HV hv; / the perl hash associated with this coro, if any */	255	HV hv; / the perl hash associated with this coro, if any */
		256	void (on_destroy)(pTHX_ struct coro coro);
273		257
274	/* statistics */	258	/* statistics */
275	int usecount; /* number of transfers to this coro */	259	int usecount; /* number of transfers to this coro */
276		260
277	/* coro process data */	261	/* coro process data */
…		…
285	struct coro next, prev;	269	struct coro next, prev;
286	};	270	};
287		271
288	typedef struct coro *Coro__State;	272	typedef struct coro *Coro__State;
289	typedef struct coro *Coro__State_or_hashref;	273	typedef struct coro *Coro__State_or_hashref;
		274
		275	static struct CoroSLF slf_frame; /* the current slf frame */
290		276
291	/ Coro ******************************************************************/	277	/ Coro ******************************************************************/
292		278
293	#define PRIO_MAX 3	279	#define PRIO_MAX 3
294	#define PRIO_HIGH 1	280	#define PRIO_HIGH 1
…		…
299		285
300	/* for Coro.pm */	286	/* for Coro.pm */
301	static SV *coro_current;	287	static SV *coro_current;
302	static SV *coro_readyhook;	288	static SV *coro_readyhook;
303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	289	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304	static int coro_nready;
305	static struct coro *coro_first;	290	static struct coro *coro_first;
		291	#define coro_nready coroapi.nready
306		292
307	/ lowlevel stuff ********************************************************/	293	/ lowlevel stuff ********************************************************/
308		294
309	static SV *	295	static SV *
310	coro_get_sv (pTHX_ const char *name, int create)	296	coro_get_sv (pTHX_ const char *name, int create)
…		…
403	static MGVTBL coro_cv_vtbl = {	389	static MGVTBL coro_cv_vtbl = {
404	0, 0, 0, 0,	390	0, 0, 0, 0,
405	coro_cv_free	391	coro_cv_free
406	};	392	};
407		393
408	#define CORO_MAGIC(sv, type) \	394	#define CORO_MAGIC(sv, type) \
409	SvMAGIC (sv) \	395	expect_true (SvMAGIC (sv)) \
410	? SvMAGIC (sv)->mg_type == type \	396	? expect_true (SvMAGIC (sv)->mg_type == type) \
411	? SvMAGIC (sv) \	397	? SvMAGIC (sv) \
412	: mg_find (sv, type) \	398	: mg_find (sv, type) \
413	: 0	399	: 0
414		400
415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	401	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	402	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417		403
418	static struct coro *	404	INLINE struct coro *
419	SvSTATE_ (pTHX_ SV *coro)	405	SvSTATE_ (pTHX_ SV *coro)
420	{	406	{
421	HV *stash;	407	HV *stash;
422	MAGIC *mg;	408	MAGIC *mg;
423		409
…		…
438	mg = CORO_MAGIC_state (coro);	424	mg = CORO_MAGIC_state (coro);
439	return (struct coro *)mg->mg_ptr;	425	return (struct coro *)mg->mg_ptr;
440	}	426	}
441		427
442	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	428	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		429
		430	/* fastert than SvSTATE, but expects a coroutine hv */
		431	INLINE struct coro *
		432	SvSTATE_hv (SV *sv)
		433	{
		434	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
		435	? SvMAGIC (sv)
		436	: mg_find (sv, CORO_MAGIC_type_state);
		437
		438	return (struct coro *)mg->mg_ptr;
		439	}
		440
		441	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443		442
444	/* the next two functions merely cache the padlists */	443	/* the next two functions merely cache the padlists */
445	static void	444	static void
446	get_padlist (pTHX_ CV *cv)	445	get_padlist (pTHX_ CV *cv)
447	{	446	{
…		…
514	CvPADLIST (cv) = (AV *)POPs;	513	CvPADLIST (cv) = (AV *)POPs;
515	}	514	}
516		515
517	PUTBACK;	516	PUTBACK;
518	}	517	}
		518
		519	slf_frame = c->slf_frame;
519	}	520	}
520		521
521	static void	522	static void
522	save_perl (pTHX_ Coro__State c)	523	save_perl (pTHX_ Coro__State c)
523	{	524	{
		525	c->slf_frame = slf_frame;
		526
524	{	527	{
525	dSP;	528	dSP;
526	I32 cxix = cxstack_ix;	529	I32 cxix = cxstack_ix;
527	PERL_CONTEXT *ccstk = cxstack;	530	PERL_CONTEXT *ccstk = cxstack;
528	PERL_SI *top_si = PL_curstackinfo;	531	PERL_SI *top_si = PL_curstackinfo;
…		…
595	#undef VAR	598	#undef VAR
596	}	599	}
597	}	600	}
598		601
599	/*	602	/*
600	* allocate various perl stacks. This is an exact copy	603	* allocate various perl stacks. This is almost an exact copy
601	* of perl.c:init_stacks, except that it uses less memory	604	* of perl.c:init_stacks, except that it uses less memory
602	* on the (sometimes correct) assumption that coroutines do	605	* on the (sometimes correct) assumption that coroutines do
603	* not usually need a lot of stackspace.	606	* not usually need a lot of stackspace.
604	*/	607	*/
605	#if CORO_PREFER_PERL_FUNCTIONS	608	#if CORO_PREFER_PERL_FUNCTIONS
…		…
807		810
808	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	811	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809	}	812	}
810		813
811	static void	814	static void
		815	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		816	{
		817	/* kind of mega-hacky, but works */
		818	ta->next = ta->prev = (struct coro *)ta;
		819	}
		820
		821	static int
		822	slf_check_nop (pTHX_ struct CoroSLF *frame)
		823	{
		824	return 0;
		825	}
		826
		827	static void
812	coro_setup (pTHX_ struct coro *coro)	828	coro_setup (pTHX_ struct coro *coro)
813	{	829	{
814	/*	830	/*
815	* emulate part of the perl startup here.	831	* emulate part of the perl startup here.
816	*/	832	*/
…		…
855	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
856	SPAGAIN;	872	SPAGAIN;
857	}	873	}
858		874
859	/* this newly created coroutine might be run on an existing cctx which most	875	/* this newly created coroutine might be run on an existing cctx which most
860	* likely was suspended in set_stacklevel, called from entersub.	876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
861	* set_stacklevel doesn't do anything on return, but entersub does LEAVE,
862	* so we ENTER here for symmetry.
863	*/	877	*/
864	ENTER;	878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
865	}	880	}
866		881
867	static void	882	static void
868	coro_destruct (pTHX_ struct coro *coro)	883	coro_destruct (pTHX_ struct coro *coro)
869	{	884	{
…		…
898	SvREFCNT_dec (coro->throw);	913	SvREFCNT_dec (coro->throw);
899		914
900	coro_destruct_stacks (aTHX);	915	coro_destruct_stacks (aTHX);
901	}	916	}
902		917
903	static void	918	INLINE void
904	free_coro_mortal (pTHX)	919	free_coro_mortal (pTHX)
905	{	920	{
906	if (expect_true (coro_mortal))	921	if (expect_true (coro_mortal))
907	{	922	{
908	SvREFCNT_dec (coro_mortal);	923	SvREFCNT_dec (coro_mortal);
…		…
913	static int	928	static int
914	runops_trace (pTHX)	929	runops_trace (pTHX)
915	{	930	{
916	COP *oldcop = 0;	931	COP *oldcop = 0;
917	int oldcxix = -2;	932	int oldcxix = -2;
918	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */	933	struct coro coro = SvSTATE_current; / trace cctx is tied to specific coro */
919	coro_cctx *cctx = coro->cctx;	934	coro_cctx *cctx = coro->cctx;
920		935
921	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	936	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922	{	937	{
923	PERL_ASYNC_CHECK ();	938	PERL_ASYNC_CHECK ();
…		…
1033	TAINT_NOT;	1048	TAINT_NOT;
1034	return 0;	1049	return 0;
1035	}	1050	}
1036		1051
1037	static void	1052	static void
1038	prepare_set_stacklevel (struct transfer_args ta, struct coro_cctx cctx)	1053	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)
1039	{	1054	{
1040	ta->prev = (struct coro *)cctx;	1055	ta->prev = (struct coro *)cctx;
1041	ta->next = 0;	1056	ta->next = 0;
1042	}	1057	}
1043		1058
…		…
1069	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1084	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1070	SPAGAIN;	1085	SPAGAIN;
1071	}	1086	}
1072		1087
1073	/* the tail of transfer: execute stuff we can only do after a transfer */	1088	/* the tail of transfer: execute stuff we can only do after a transfer */
1074	static void	1089	INLINE void
1075	transfer_tail (pTHX)	1090	transfer_tail (pTHX)
1076	{	1091	{
1077	struct coro next = (struct coro )transfer_next;	1092	struct coro next = (struct coro )transfer_next;
1078	transfer_next = 0; //D for temporary assertion in transfer	1093	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1079	assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D	1094	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1080		1095
1081	free_coro_mortal (aTHX);	1096	free_coro_mortal (aTHX);
1082	UNLOCK;
1083		1097
1084	if (expect_false (next->throw))	1098	if (expect_false (next->throw))
1085	{	1099	{
1086	SV *exception = sv_2mortal (next->throw);	1100	SV *exception = sv_2mortal (next->throw);
1087		1101
…		…
1103	# endif	1117	# endif
1104	#endif	1118	#endif
1105	{	1119	{
1106	dTHX;	1120	dTHX;
1107		1121
1108	/* entersub called ENTER, but we never 'returned', undo that here */	1122	/* normally we would need to skip the entersub here */
1109	LEAVE;	1123	/* not doing so will re-execute it, which is exactly what we want */
1110
1111	/* we now skip the entersub that did lead to transfer() */
1112	PL_op = PL_op->op_next;	1124	/* PL_nop = PL_nop->op_next */
1113		1125
1114	/* inject a fake subroutine call to cctx_init */	1126	/* inject a fake subroutine call to cctx_init */
1115	cctx_prepare (aTHX_ (coro_cctx *)arg);	1127	cctx_prepare (aTHX_ (coro_cctx *)arg);
1116		1128
1117	/* cctx_run is the alternative tail of transfer() */	1129	/* cctx_run is the alternative tail of transfer() */
		1130	/* TODO: throwing an exception here might be deadly, VERIFY */
1118	transfer_tail (aTHX);	1131	transfer_tail (aTHX);
1119		1132
1120	/* somebody or something will hit me for both perl_run and PL_restartop */	1133	/* somebody or something will hit me for both perl_run and PL_restartop */
1121	PL_restartop = PL_op;	1134	PL_restartop = PL_op;
1122	perl_run (PL_curinterp);	1135	perl_run (PL_curinterp);
…		…
1173	/* mmap supposedly does allocate-on-write for us */	1186	/* mmap supposedly does allocate-on-write for us */
1174	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1187	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
1175		1188
1176	if (cctx->sptr != (void *)-1)	1189	if (cctx->sptr != (void *)-1)
1177	{	1190	{
1178	# if CORO_STACKGUARD	1191	#if CORO_STACKGUARD
1179	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1192	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180	# endif	1193	#endif
1181	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1194	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1182	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1195	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183	cctx->flags \|= CC_MAPPED;	1196	cctx->flags \|= CC_MAPPED;
1184	}	1197	}
1185	else	1198	else
1186	#endif	1199	#endif
1187	{	1200	{
1188	cctx->ssize = cctx_stacksize * (long)sizeof (long);	1201	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189	New (0, cctx->sptr, cctx_stacksize, long);	1202	New (0, cctx->sptr, cctx_stacksize, long);
1190		1203
1191	if (!cctx->sptr)	1204	if (!cctx->sptr)
1192	{	1205	{
1193	perror ("FATAL: unable to allocate stack for coroutine");	1206	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194	_exit (EXIT_FAILURE);	1207	_exit (EXIT_FAILURE);
1195	}	1208	}
1196		1209
1197	stack_start = cctx->sptr;	1210	stack_start = cctx->sptr;
1198	stack_size = cctx->ssize;	1211	stack_size = cctx->ssize;
1199	}	1212	}
1200		1213
1201	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1214	#if CORO_USE_VALGRIND
		1215	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char )stack_start, (char )stack_start + stack_size);
		1216	#endif
		1217
1202	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1218	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1203		1219
1204	return cctx;	1220	return cctx;
1205	}	1221	}
1206		1222
…		…
1214	coro_destroy (&cctx->cctx);	1230	coro_destroy (&cctx->cctx);
1215		1231
1216	/* coro_transfer creates new, empty cctx's */	1232	/* coro_transfer creates new, empty cctx's */
1217	if (cctx->sptr)	1233	if (cctx->sptr)
1218	{	1234	{
1219	#if CORO_USE_VALGRIND	1235	#if CORO_USE_VALGRIND
1220	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1236	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1221	#endif	1237	#endif
1222		1238
1223	#if HAVE_MMAP	1239	#if HAVE_MMAP
1224	if (cctx->flags & CC_MAPPED)	1240	if (cctx->flags & CC_MAPPED)
1225	munmap (cctx->sptr, cctx->ssize);	1241	munmap (cctx->sptr, cctx->ssize);
1226	else	1242	else
…		…
1253	}	1269	}
1254		1270
1255	static void	1271	static void
1256	cctx_put (coro_cctx *cctx)	1272	cctx_put (coro_cctx *cctx)
1257	{	1273	{
1258	assert (("cctx_put called on non-initialised cctx", cctx->sptr));	1274	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1259		1275
1260	/* free another cctx if overlimit */	1276	/* free another cctx if overlimit */
1261	if (expect_false (cctx_idle >= cctx_max_idle))	1277	if (expect_false (cctx_idle >= cctx_max_idle))
1262	{	1278	{
1263	coro_cctx *first = cctx_first;	1279	coro_cctx *first = cctx_first;
…		…
1278	transfer_check (pTHX_ struct coro prev, struct coro next)	1294	transfer_check (pTHX_ struct coro prev, struct coro next)
1279	{	1295	{
1280	if (expect_true (prev != next))	1296	if (expect_true (prev != next))
1281	{	1297	{
1282	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1298	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1283	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1299	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1284		1300
1285	if (expect_false (next->flags & CF_RUNNING))	1301	if (expect_false (next->flags & CF_RUNNING))
1286	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1302	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1287		1303
1288	if (expect_false (next->flags & CF_DESTROYED))	1304	if (expect_false (next->flags & CF_DESTROYED))
1289	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1305	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1290		1306
1291	#if !PERL_VERSION_ATLEAST (5,10,0)	1307	#if !PERL_VERSION_ATLEAST (5,10,0)
1292	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1308	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1309	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1294	#endif	1310	#endif
1295	}	1311	}
1296	}	1312	}
1297		1313
1298	/* always use the TRANSFER macro */	1314	/* always use the TRANSFER macro */
…		…
1302	dSTACKLEVEL;	1318	dSTACKLEVEL;
1303		1319
1304	/* sometimes transfer is only called to set idle_sp */	1320	/* sometimes transfer is only called to set idle_sp */
1305	if (expect_false (!next))	1321	if (expect_false (!next))
1306	{	1322	{
1307	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1323	((coro_cctx )prev)->idle_sp = (void )stacklevel;
1308	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1324	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1309	}	1325	}
1310	else if (expect_true (prev != next))	1326	else if (expect_true (prev != next))
1311	{	1327	{
1312	coro_cctx *prev__cctx;	1328	coro_cctx *prev__cctx;
…		…
1319	prev->flags \|= CF_RUNNING;	1335	prev->flags \|= CF_RUNNING;
1320	}	1336	}
1321		1337
1322	prev->flags &= ~CF_RUNNING;	1338	prev->flags &= ~CF_RUNNING;
1323	next->flags \|= CF_RUNNING;	1339	next->flags \|= CF_RUNNING;
1324
1325	LOCK;
1326		1340
1327	/* first get rid of the old state */	1341	/* first get rid of the old state */
1328	save_perl (aTHX_ prev);	1342	save_perl (aTHX_ prev);
1329		1343
1330	if (expect_false (next->flags & CF_NEW))	1344	if (expect_false (next->flags & CF_NEW))
…		…
1339		1353
1340	prev__cctx = prev->cctx;	1354	prev__cctx = prev->cctx;
1341		1355
1342	/* possibly untie and reuse the cctx */	1356	/* possibly untie and reuse the cctx */
1343	if (expect_true (	1357	if (expect_true (
1344	prev__cctx->idle_sp == STACKLEVEL	1358	prev__cctx->idle_sp == (void *)stacklevel
1345	&& !(prev__cctx->flags & CC_TRACE)	1359	&& !(prev__cctx->flags & CC_TRACE)
1346	&& !force_cctx	1360	&& !force_cctx
1347	))	1361	))
1348	{	1362	{
1349	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1363	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1350	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1364	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1351		1365
1352	prev->cctx = 0;	1366	prev->cctx = 0;
1353		1367
1354	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1368	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1355	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1369	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1363	++next->usecount;	1377	++next->usecount;
1364		1378
1365	if (expect_true (!next->cctx))	1379	if (expect_true (!next->cctx))
1366	next->cctx = cctx_get (aTHX);	1380	next->cctx = cctx_get (aTHX);
1367		1381
1368	assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D	1382	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1369	transfer_next = next;	1383	transfer_next = next;
1370		1384
1371	if (expect_false (prev__cctx != next->cctx))	1385	if (expect_false (prev__cctx != next->cctx))
1372	{	1386	{
1373	prev__cctx->top_env = PL_top_env;	1387	prev__cctx->top_env = PL_top_env;
…		…
1388	coro_state_destroy (pTHX_ struct coro *coro)	1402	coro_state_destroy (pTHX_ struct coro *coro)
1389	{	1403	{
1390	if (coro->flags & CF_DESTROYED)	1404	if (coro->flags & CF_DESTROYED)
1391	return 0;	1405	return 0;
1392		1406
		1407	if (coro->on_destroy)
		1408	coro->on_destroy (aTHX_ coro);
		1409
1393	coro->flags \|= CF_DESTROYED;	1410	coro->flags \|= CF_DESTROYED;
1394		1411
1395	if (coro->flags & CF_READY)	1412	if (coro->flags & CF_READY)
1396	{	1413	{
1397	/* reduce nready, as destroying a ready coro effectively unreadies it */	1414	/* reduce nready, as destroying a ready coro effectively unreadies it */
1398	/* alternative: look through all ready queues and remove the coro */	1415	/* alternative: look through all ready queues and remove the coro */
1399	LOCK;
1400	--coro_nready;	1416	--coro_nready;
1401	UNLOCK;
1402	}	1417	}
1403	else	1418	else
1404	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1419	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
1405		1420
1406	if (coro->mainstack && coro->mainstack != main_mainstack)	1421	if (coro->mainstack && coro->mainstack != main_mainstack)
1407	{	1422	{
1408	struct coro temp;	1423	struct coro temp;
1409		1424
1410	if (coro->flags & CF_RUNNING)	1425	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1411	croak ("FATAL: tried to destroy currently running coroutine");
1412		1426
1413	save_perl (aTHX_ &temp);	1427	save_perl (aTHX_ &temp);
1414	load_perl (aTHX_ coro);	1428	load_perl (aTHX_ coro);
1415		1429
1416	coro_destruct (aTHX_ coro);	1430	coro_destruct (aTHX_ coro);
…		…
1467	# define MGf_DUP 0	1481	# define MGf_DUP 0
1468	#endif	1482	#endif
1469	};	1483	};
1470		1484
1471	static void	1485	static void
1472	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1486	prepare_transfer (pTHX_ struct coro_transfer_args ta, SV prev_sv, SV *next_sv)
1473	{	1487	{
1474	ta->prev = SvSTATE (prev_sv);	1488	ta->prev = SvSTATE (prev_sv);
1475	ta->next = SvSTATE (next_sv);	1489	ta->next = SvSTATE (next_sv);
1476	TRANSFER_CHECK (*ta);	1490	TRANSFER_CHECK (*ta);
1477	}	1491	}
1478		1492
1479	static void	1493	static void
1480	api_transfer (SV prev_sv, SV next_sv)	1494	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1481	{	1495	{
1482	dTHX;
1483	struct transfer_args ta;	1496	struct coro_transfer_args ta;
1484		1497
1485	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1498	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486	TRANSFER (ta, 1);	1499	TRANSFER (ta, 1);
1487	}	1500	}
1488		1501
1489	/ Coro ******************************************************************/	1502	/ Coro ******************************************************************/
1490		1503
1491	static void	1504	INLINE void
1492	coro_enq (pTHX_ SV *coro_sv)	1505	coro_enq (pTHX_ struct coro *coro)
1493	{	1506	{
1494	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1507	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495	}	1508	}
1496		1509
1497	static SV *	1510	INLINE SV *
1498	coro_deq (pTHX)	1511	coro_deq (pTHX)
1499	{	1512	{
1500	int prio;	1513	int prio;
1501		1514
1502	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1515	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1505		1518
1506	return 0;	1519	return 0;
1507	}	1520	}
1508		1521
1509	static int	1522	static int
1510	api_ready (SV *coro_sv)	1523	api_ready (pTHX_ SV *coro_sv)
1511	{	1524	{
1512	dTHX;
1513	struct coro *coro;	1525	struct coro *coro;
1514	SV *sv_hook;	1526	SV *sv_hook;
1515	void (*xs_hook)(void);	1527	void (*xs_hook)(void);
1516		1528
1517	if (SvROK (coro_sv))	1529	if (SvROK (coro_sv))
…		…
1522	if (coro->flags & CF_READY)	1534	if (coro->flags & CF_READY)
1523	return 0;	1535	return 0;
1524		1536
1525	coro->flags \|= CF_READY;	1537	coro->flags \|= CF_READY;
1526		1538
1527	LOCK;
1528
1529	sv_hook = coro_nready ? 0 : coro_readyhook;	1539	sv_hook = coro_nready ? 0 : coro_readyhook;
1530	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1540	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531		1541
1532	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1542	coro_enq (aTHX_ coro);
1533	++coro_nready;	1543	++coro_nready;
1534		1544
1535	UNLOCK;
1536
1537	if (sv_hook)	1545	if (sv_hook)
1538	{	1546	{
1539	dSP;	1547	dSP;
1540		1548
1541	ENTER;	1549	ENTER;
…		…
1555		1563
1556	return 1;	1564	return 1;
1557	}	1565	}
1558		1566
1559	static int	1567	static int
1560	api_is_ready (SV *coro_sv)	1568	api_is_ready (pTHX_ SV *coro_sv)
1561	{	1569	{
1562	dTHX;
1563	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1570	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1564	}	1571	}
1565		1572
1566	static void	1573	INLINE void
1567	prepare_schedule (pTHX_ struct transfer_args *ta)	1574	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1568	{	1575	{
1569	SV prev_sv, next_sv;	1576	SV prev_sv, next_sv;
1570		1577
1571	for (;;)	1578	for (;;)
1572	{	1579	{
1573	LOCK;
1574	next_sv = coro_deq (aTHX);	1580	next_sv = coro_deq (aTHX);
1575		1581
1576	/* nothing to schedule: call the idle handler */	1582	/* nothing to schedule: call the idle handler */
1577	if (expect_false (!next_sv))	1583	if (expect_false (!next_sv))
1578	{	1584	{
1579	dSP;	1585	dSP;
1580	UNLOCK;
1581		1586
1582	ENTER;	1587	ENTER;
1583	SAVETMPS;	1588	SAVETMPS;
1584		1589
1585	PUSHMARK (SP);	1590	PUSHMARK (SP);
…		…
1590	FREETMPS;	1595	FREETMPS;
1591	LEAVE;	1596	LEAVE;
1592	continue;	1597	continue;
1593	}	1598	}
1594		1599
1595	ta->next = SvSTATE (next_sv);	1600	ta->next = SvSTATE_hv (next_sv);
1596		1601
1597	/* cannot transfer to destroyed coros, skip and look for next */	1602	/* cannot transfer to destroyed coros, skip and look for next */
1598	if (expect_false (ta->next->flags & CF_DESTROYED))	1603	if (expect_false (ta->next->flags & CF_DESTROYED))
1599	{	1604	{
1600	UNLOCK;
1601	SvREFCNT_dec (next_sv);	1605	SvREFCNT_dec (next_sv);
1602	/* coro_nready has already been taken care of by destroy */	1606	/* coro_nready has already been taken care of by destroy */
1603	continue;	1607	continue;
1604	}	1608	}
1605		1609
1606	--coro_nready;	1610	--coro_nready;
1607	UNLOCK;
1608	break;	1611	break;
1609	}	1612	}
1610		1613
1611	/* free this only after the transfer */	1614	/* free this only after the transfer */
1612	prev_sv = SvRV (coro_current);	1615	prev_sv = SvRV (coro_current);
1613	ta->prev = SvSTATE (prev_sv);	1616	ta->prev = SvSTATE_hv (prev_sv);
1614	TRANSFER_CHECK (*ta);	1617	TRANSFER_CHECK (*ta);
1615	assert (ta->next->flags & CF_READY);	1618	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1616	ta->next->flags &= ~CF_READY;	1619	ta->next->flags &= ~CF_READY;
1617	SvRV_set (coro_current, next_sv);	1620	SvRV_set (coro_current, next_sv);
1618		1621
1619	LOCK;
1620	free_coro_mortal (aTHX);	1622	free_coro_mortal (aTHX);
1621	coro_mortal = prev_sv;	1623	coro_mortal = prev_sv;
1622	UNLOCK;
1623	}	1624	}
1624		1625
1625	static void	1626	INLINE void
1626	prepare_cede (pTHX_ struct transfer_args *ta)	1627	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1627	{	1628	{
1628	api_ready (coro_current);	1629	api_ready (aTHX_ coro_current);
1629	prepare_schedule (aTHX_ ta);	1630	prepare_schedule (aTHX_ ta);
1630	}	1631	}
1631		1632
		1633	INLINE void
		1634	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1635	{
		1636	SV *prev = SvRV (coro_current);
		1637
		1638	if (coro_nready)
		1639	{
		1640	prepare_schedule (aTHX_ ta);
		1641	api_ready (aTHX_ prev);
		1642	}
		1643	else
		1644	prepare_nop (aTHX_ ta);
		1645	}
		1646
		1647	static void
		1648	api_schedule (pTHX)
		1649	{
		1650	struct coro_transfer_args ta;
		1651
		1652	prepare_schedule (aTHX_ &ta);
		1653	TRANSFER (ta, 1);
		1654	}
		1655
1632	static int	1656	static int
1633	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1657	api_cede (pTHX)
1634	{	1658	{
1635	if (coro_nready)	1659	struct coro_transfer_args ta;
1636	{	1660
1637	SV *prev = SvRV (coro_current);
1638	prepare_schedule (aTHX_ ta);	1661	prepare_cede (aTHX_ &ta);
1639	api_ready (prev);	1662
		1663	if (expect_true (ta.prev != ta.next))
		1664	{
		1665	TRANSFER (ta, 1);
1640	return 1;	1666	return 1;
1641	}	1667	}
1642	else	1668	else
1643	return 0;	1669	return 0;
1644	}	1670	}
1645		1671
1646	static void
1647	api_schedule (void)
1648	{
1649	dTHX;
1650	struct transfer_args ta;
1651
1652	prepare_schedule (aTHX_ &ta);
1653	TRANSFER (ta, 1);
1654	}
1655
1656	static int	1672	static int
1657	api_cede (void)	1673	api_cede_notself (pTHX)
1658	{	1674	{
1659	dTHX;	1675	if (coro_nready)
		1676	{
1660	struct transfer_args ta;	1677	struct coro_transfer_args ta;
1661		1678
1662	prepare_cede (aTHX_ &ta);	1679	prepare_cede_notself (aTHX_ &ta);
1663
1664	if (expect_true (ta.prev != ta.next))
1665	{
1666	TRANSFER (ta, 1);	1680	TRANSFER (ta, 1);
1667	return 1;	1681	return 1;
1668	}	1682	}
1669	else	1683	else
1670	return 0;	1684	return 0;
1671	}	1685	}
1672		1686
1673	static int	1687	static void
1674	api_cede_notself (void)
1675	{
1676	dTHX;
1677	struct transfer_args ta;
1678
1679	if (prepare_cede_notself (aTHX_ &ta))
1680	{
1681	TRANSFER (ta, 1);
1682	return 1;
1683	}
1684	else
1685	return 0;
1686	}
1687
1688	static void
1689	api_trace (SV *coro_sv, int flags)	1688	api_trace (pTHX_ SV *coro_sv, int flags)
1690	{	1689	{
1691	dTHX;
1692	struct coro *coro = SvSTATE (coro_sv);	1690	struct coro *coro = SvSTATE (coro_sv);
1693		1691
1694	if (flags & CC_TRACE)	1692	if (flags & CC_TRACE)
1695	{	1693	{
1696	if (!coro->cctx)	1694	if (!coro->cctx)
1697	coro->cctx = cctx_new_run ();	1695	coro->cctx = cctx_new_run ();
1698	else if (!(coro->cctx->flags & CC_TRACE))	1696	else if (!(coro->cctx->flags & CC_TRACE))
1699	croak ("cannot enable tracing on coroutine with custom stack");	1697	croak ("cannot enable tracing on coroutine with custom stack,");
1700		1698
1701	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1699	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1702	}	1700	}
1703	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1701	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704	{	1702	{
…		…
1709	else	1707	else
1710	coro->slot->runops = RUNOPS_DEFAULT;	1708	coro->slot->runops = RUNOPS_DEFAULT;
1711	}	1709	}
1712	}	1710	}
1713		1711
1714	#if 0
1715	static int
1716	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1717	{
1718	AV *padlist;
1719	AV av = (AV )mg->mg_obj;
1720
1721	abort ();
1722
1723	return 0;
1724	}
1725
1726	static MGVTBL coro_gensub_vtbl = {
1727	0, 0, 0, 0,
1728	coro_gensub_free
1729	};
1730	#endif
1731
1732	/*****************************************************************************/	1712	/*****************************************************************************/
1733	/* PerlIO::cede */	1713	/* PerlIO::cede */
1734		1714
1735	typedef struct	1715	typedef struct
1736	{	1716	{
…		…
1763	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1743	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764	double now = nvtime ();	1744	double now = nvtime ();
1765		1745
1766	if (now >= self->next)	1746	if (now >= self->next)
1767	{	1747	{
1768	api_cede ();	1748	api_cede (aTHX);
1769	self->next = now + self->every;	1749	self->next = now + self->every;
1770	}	1750	}
1771		1751
1772	return PerlIOBuf_flush (aTHX_ f);	1752	return PerlIOBuf_flush (aTHX_ f);
1773	}	1753	}
…		…
1802	PerlIOBuf_get_ptr,	1782	PerlIOBuf_get_ptr,
1803	PerlIOBuf_get_cnt,	1783	PerlIOBuf_get_cnt,
1804	PerlIOBuf_set_ptrcnt,	1784	PerlIOBuf_set_ptrcnt,
1805	};	1785	};
1806		1786
		1787	/*****************************************************************************/
		1788
		1789	static const CV slf_cv; / for quick consistency check */
		1790
		1791	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1792	static SV *slf_arg0;
		1793	static SV *slf_arg1;
		1794	static SV *slf_arg2;
		1795
		1796	/* this restores the stack in the case we patched the entersub, to */
		1797	/* recreate the stack frame as perl will on following calls */
		1798	/* since entersub cleared the stack */
		1799	static OP *
		1800	pp_restore (pTHX)
		1801	{
		1802	dSP;
		1803
		1804	PUSHMARK (SP);
		1805
		1806	EXTEND (SP, 3);
		1807	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1808	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1809	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
		1810	PUSHs ((SV *)CvGV (slf_cv));
		1811
		1812	RETURNOP (slf_restore.op_first);
		1813	}
		1814
		1815	static void
		1816	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1817	{
		1818	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1819	}
		1820
		1821	static void
		1822	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1823	{
		1824	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1825
		1826	frame->prepare = slf_prepare_set_stacklevel;
		1827	frame->check = slf_check_nop;
		1828	frame->data = (void *)SvIV (arg [0]);
		1829	}
		1830
		1831	static void
		1832	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1833	{
		1834	SV arg = (SV )slf_frame.data;
		1835
		1836	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1837	}
		1838
		1839	static void
		1840	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1841	{
		1842	if (items != 2)
		1843	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1844
		1845	frame->prepare = slf_prepare_transfer;
		1846	frame->check = slf_check_nop;
		1847	frame->data = (void )arg; / let's hope it will stay valid */
		1848	}
		1849
		1850	static void
		1851	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1852	{
		1853	frame->prepare = prepare_schedule;
		1854	frame->check = slf_check_nop;
		1855	}
		1856
		1857	static void
		1858	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1859	{
		1860	frame->prepare = prepare_cede;
		1861	frame->check = slf_check_nop;
		1862	}
		1863
		1864	static void
		1865	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1866	{
		1867	frame->prepare = prepare_cede_notself;
		1868	frame->check = slf_check_nop;
		1869	}
		1870
		1871	/* we hijack an hopefully unused CV flag for our purposes */
		1872	#define CVf_SLF 0x4000
		1873
		1874	/*
		1875	* these not obviously related functions are all rolled into one
		1876	* function to increase chances that they all will call transfer with the same
		1877	* stack offset
		1878	* SLF stands for "schedule-like-function".
		1879	*/
		1880	static OP *
		1881	pp_slf (pTHX)
		1882	{
		1883	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1884
		1885	/* set up the slf frame, unless it has already been set-up */
		1886	/* the latter happens when a new coro has been started */
		1887	/* or when a new cctx was attached to an existing coroutine */
		1888	if (expect_true (!slf_frame.prepare))
		1889	{
		1890	/* first iteration */
		1891	dSP;
		1892	SV **arg = PL_stack_base + TOPMARK + 1;
		1893	int items = SP - arg; /* args without function object */
		1894	SV gv = sp;
		1895
		1896	/* do a quick consistency check on the "function" object, and if it isn't */
		1897	/* for us, divert to the real entersub */
		1898	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1899	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1900
		1901	/* pop args */
		1902	SP = PL_stack_base + POPMARK;
		1903
		1904	if (!(PL_op->op_flags & OPf_STACKED))
		1905	{
		1906	/* ampersand-form of call, use @_ instead of stack */
		1907	AV *av = GvAV (PL_defgv);
		1908	arg = AvARRAY (av);
		1909	items = AvFILLp (av) + 1;
		1910	}
		1911
		1912	PUTBACK;
		1913
		1914	/* now call the init function, which needs to set up slf_frame */
		1915	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1916	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1917	}
		1918
		1919	/* now that we have a slf_frame, interpret it! */
		1920	/* we use a callback system not to make the code needlessly */
		1921	/* complicated, but so we can run multiple perl coros from one cctx */
		1922
		1923	do
		1924	{
		1925	struct coro_transfer_args ta;
		1926
		1927	slf_frame.prepare (aTHX_ &ta);
		1928	TRANSFER (ta, 0);
		1929
		1930	checkmark = PL_stack_sp - PL_stack_base;
		1931	}
		1932	while (slf_frame.check (aTHX_ &slf_frame));
		1933
		1934	{
		1935	dSP;
		1936	SV **bot = PL_stack_base + checkmark;
		1937	int gimme = GIMME_V;
		1938
		1939	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
		1940
		1941	/* make sure we put something on the stack in scalar context */
		1942	if (gimme == G_SCALAR)
		1943	{
		1944	if (sp == bot)
		1945	XPUSHs (&PL_sv_undef);
		1946
		1947	SP = bot + 1;
		1948	}
		1949
		1950	PUTBACK;
		1951	}
		1952
		1953	return NORMAL;
		1954	}
		1955
		1956	static void
		1957	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
		1958	{
		1959	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1960
		1961	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1962	&& PL_op->op_ppaddr != pp_slf)
		1963	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1964
		1965	if (items > 3)
		1966	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
		1967
		1968	CvFLAGS (cv) \|= CVf_SLF;
		1969	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1970	slf_cv = cv;
		1971
		1972	/* we patch the op, and then re-run the whole call */
		1973	/* we have to put the same argument on the stack for this to work */
		1974	/* and this will be done by pp_restore */
		1975	slf_restore.op_next = (OP *)&slf_restore;
		1976	slf_restore.op_type = OP_CUSTOM;
		1977	slf_restore.op_ppaddr = pp_restore;
		1978	slf_restore.op_first = PL_op;
		1979
		1980	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
		1981	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		1982	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
		1983
		1984	PL_op->op_ppaddr = pp_slf;
		1985
		1986	PL_op = (OP *)&slf_restore;
		1987	}
		1988
		1989	/*****************************************************************************/
		1990
		1991	static void
		1992	coro_semaphore_adjust (pTHX_ AV *av, int adjust)
		1993	{
		1994	SV *count_sv = AvARRAY (av)[0];
		1995	IV count = SvIVX (count_sv);
		1996
		1997	count += adjust;
		1998	SvIVX (count_sv) = count;
		1999
		2000	/* now wake up as many waiters as possible */
		2001	while (count > 0 && AvFILLp (av) >= count)
		2002	{
		2003	SV *cb;
		2004
		2005	/* swap first two elements so we can shift a waiter */
		2006	AvARRAY (av)[0] = AvARRAY (av)[1];
		2007	AvARRAY (av)[1] = count_sv;
		2008	cb = av_shift (av);
		2009
		2010	if (SvOBJECT (cb))
		2011	api_ready (aTHX_ cb);
		2012	else
		2013	croak ("callbacks not yet supported");
		2014
		2015	SvREFCNT_dec (cb);
		2016
		2017	--count;
		2018	}
		2019	}
		2020
		2021	static void
		2022	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2023	{
		2024	/* call $sem->adjust (0) to possibly wake up some waiters */
		2025	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2026	}
		2027
		2028	static int
		2029	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2030	{
		2031	AV av = (AV )frame->data;
		2032	SV *count_sv = AvARRAY (av)[0];
		2033
		2034	if (SvIVX (count_sv) > 0)
		2035	{
		2036	SvSTATE_current->on_destroy = 0;
		2037	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2038	return 0;
		2039	}
		2040	else
		2041	{
		2042	int i;
		2043	/* if we were woken up but can't down, we look through the whole */
		2044	/* waiters list and only add us if we aren't in there already */
		2045	/* this avoids some degenerate memory usage cases */
		2046
		2047	for (i = 1; i <= AvFILLp (av); ++i)
		2048	if (AvARRAY (av)[i] == SvRV (coro_current))
		2049	return 1;
		2050
		2051	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2052	return 1;
		2053	}
		2054	}
		2055
		2056	static void
		2057	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2058	{
		2059	AV av = (AV )SvRV (arg [0]);
		2060
		2061	if (SvIVX (AvARRAY (av)[0]) > 0)
		2062	{
		2063	frame->data = (void *)av;
		2064	frame->prepare = prepare_nop;
		2065	}
		2066	else
		2067	{
		2068	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2069
		2070	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2071	frame->prepare = prepare_schedule;
		2072
		2073	/* to avoid race conditions when a woken-up coro gets terminated */
		2074	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2075	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2076	}
		2077
		2078	frame->check = slf_check_semaphore_down;
		2079
		2080	}
		2081
		2082	/*****************************************************************************/
		2083
		2084	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2085
		2086	/* create a closure from XS, returns a code reference */
		2087	/* the arg can be accessed via GENSUB_ARG from the callback */
		2088	/* the callback must use dXSARGS/XSRETURN */
		2089	static SV *
		2090	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
		2091	{
		2092	CV cv = (CV )NEWSV (0, 0);
		2093
		2094	sv_upgrade ((SV *)cv, SVt_PVCV);
		2095
		2096	CvANON_on (cv);
		2097	CvISXSUB_on (cv);
		2098	CvXSUB (cv) = xsub;
		2099	GENSUB_ARG = arg;
		2100
		2101	return newRV_noinc ((SV *)cv);
		2102	}
		2103
		2104	/*****************************************************************************/
1807		2105
1808	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2106	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1809		2107
1810	PROTOTYPES: DISABLE	2108	PROTOTYPES: DISABLE
1811		2109
1812	BOOT:	2110	BOOT:
1813	{	2111	{
1814	#ifdef USE_ITHREADS	2112	#ifdef USE_ITHREADS
1815	MUTEX_INIT (&coro_lock);
1816	# if CORO_PTHREAD	2113	# if CORO_PTHREAD
1817	coro_thx = PERL_GET_CONTEXT;	2114	coro_thx = PERL_GET_CONTEXT;
1818	# endif	2115	# endif
1819	#endif	2116	#endif
1820	BOOT_PAGESIZE;	2117	BOOT_PAGESIZE;
…		…
1841	main_top_env = PL_top_env;	2138	main_top_env = PL_top_env;
1842		2139
1843	while (main_top_env->je_prev)	2140	while (main_top_env->je_prev)
1844	main_top_env = main_top_env->je_prev;	2141	main_top_env = main_top_env->je_prev;
1845		2142
		2143	{
		2144	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2145
		2146	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2147	hv_store_ent (PL_custom_op_names, slf,
		2148	newSVpv ("coro_slf", 0), 0);
		2149
		2150	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2151	hv_store_ent (PL_custom_op_descs, slf,
		2152	newSVpv ("coro schedule like function", 0), 0);
		2153	}
		2154
1846	coroapi.ver = CORO_API_VERSION;	2155	coroapi.ver = CORO_API_VERSION;
1847	coroapi.rev = CORO_API_REVISION;	2156	coroapi.rev = CORO_API_REVISION;
		2157
1848	coroapi.transfer = api_transfer;	2158	coroapi.transfer = api_transfer;
		2159
		2160	coroapi.sv_state = SvSTATE_;
		2161	coroapi.execute_slf = api_execute_slf;
		2162	coroapi.prepare_nop = prepare_nop;
		2163	coroapi.prepare_schedule = prepare_schedule;
		2164	coroapi.prepare_cede = prepare_cede;
		2165	coroapi.prepare_cede_notself = prepare_cede_notself;
1849		2166
1850	{	2167	{
1851	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2168	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852		2169
1853	if (!svp) croak ("Time::HiRes is required");	2170	if (!svp) croak ("Time::HiRes is required");
…		…
1886	av_push (coro->args, newSVsv (ST (i)));	2203	av_push (coro->args, newSVsv (ST (i)));
1887	}	2204	}
1888	OUTPUT:	2205	OUTPUT:
1889	RETVAL	2206	RETVAL
1890		2207
1891	# these not obviously related functions are all rolled into the same xs
1892	# function to increase chances that they all will call transfer with the same
1893	# stack offset
1894	void	2208	void
1895	_set_stacklevel (...)	2209	_set_stacklevel (...)
1896	ALIAS:	2210	CODE:
1897	Coro::State::transfer = 1	2211	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1898	Coro::schedule = 2
1899	Coro::cede = 3
1900	Coro::cede_notself = 4
1901	CODE:
1902	{
1903	struct transfer_args ta;
1904		2212
1905	PUTBACK;	2213	void
1906	switch (ix)	2214	transfer (...)
1907	{	2215	PROTOTYPE: $$
1908	case 0:	2216	CODE:
1909	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));	2217	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1910	break;
1911
1912	case 1:
1913	if (items != 2)
1914	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1915
1916	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1917	break;
1918
1919	case 2:
1920	prepare_schedule (aTHX_ &ta);
1921	break;
1922
1923	case 3:
1924	prepare_cede (aTHX_ &ta);
1925	break;
1926
1927	case 4:
1928	if (!prepare_cede_notself (aTHX_ &ta))
1929	XSRETURN_EMPTY;
1930
1931	break;
1932	}
1933	SPAGAIN;
1934
1935	BARRIER;
1936	PUTBACK;
1937	TRANSFER (ta, 0);
1938	SPAGAIN; /* might be the sp of a different coroutine now */
1939	/* be extra careful not to ever do anything after TRANSFER */
1940	}
1941		2218
1942	bool	2219	bool
1943	_destroy (SV *coro_sv)	2220	_destroy (SV *coro_sv)
1944	CODE:	2221	CODE:
1945	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2222	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1952	CODE:	2229	CODE:
1953	_exit (code);	2230	_exit (code);
1954		2231
1955	int	2232	int
1956	cctx_stacksize (int new_stacksize = 0)	2233	cctx_stacksize (int new_stacksize = 0)
		2234	PROTOTYPE: ;$
1957	CODE:	2235	CODE:
1958	RETVAL = cctx_stacksize;	2236	RETVAL = cctx_stacksize;
1959	if (new_stacksize)	2237	if (new_stacksize)
1960	{	2238	{
1961	cctx_stacksize = new_stacksize;	2239	cctx_stacksize = new_stacksize;
…		…
1964	OUTPUT:	2242	OUTPUT:
1965	RETVAL	2243	RETVAL
1966		2244
1967	int	2245	int
1968	cctx_max_idle (int max_idle = 0)	2246	cctx_max_idle (int max_idle = 0)
		2247	PROTOTYPE: ;$
1969	CODE:	2248	CODE:
1970	RETVAL = cctx_max_idle;	2249	RETVAL = cctx_max_idle;
1971	if (max_idle > 1)	2250	if (max_idle > 1)
1972	cctx_max_idle = max_idle;	2251	cctx_max_idle = max_idle;
1973	OUTPUT:	2252	OUTPUT:
1974	RETVAL	2253	RETVAL
1975		2254
1976	int	2255	int
1977	cctx_count ()	2256	cctx_count ()
		2257	PROTOTYPE:
1978	CODE:	2258	CODE:
1979	RETVAL = cctx_count;	2259	RETVAL = cctx_count;
1980	OUTPUT:	2260	OUTPUT:
1981	RETVAL	2261	RETVAL
1982		2262
1983	int	2263	int
1984	cctx_idle ()	2264	cctx_idle ()
		2265	PROTOTYPE:
1985	CODE:	2266	CODE:
1986	RETVAL = cctx_idle;	2267	RETVAL = cctx_idle;
1987	OUTPUT:	2268	OUTPUT:
1988	RETVAL	2269	RETVAL
1989		2270
1990	void	2271	void
1991	list ()	2272	list ()
		2273	PROTOTYPE:
1992	PPCODE:	2274	PPCODE:
1993	{	2275	{
1994	struct coro *coro;	2276	struct coro *coro;
1995	for (coro = coro_first; coro; coro = coro->next)	2277	for (coro = coro_first; coro; coro = coro->next)
1996	if (coro->hv)	2278	if (coro->hv)
…		…
2063	SvREFCNT_dec (self->throw);	2345	SvREFCNT_dec (self->throw);
2064	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2346	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2065		2347
2066	void	2348	void
2067	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2349	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2350	PROTOTYPE: $;$
		2351	C_ARGS: aTHX_ coro, flags
2068		2352
2069	SV *	2353	SV *
2070	has_cctx (Coro::State coro)	2354	has_cctx (Coro::State coro)
2071	PROTOTYPE: $	2355	PROTOTYPE: $
2072	CODE:	2356	CODE:
…		…
2096	OUTPUT:	2380	OUTPUT:
2097	RETVAL	2381	RETVAL
2098		2382
2099	void	2383	void
2100	force_cctx ()	2384	force_cctx ()
		2385	PROTOTYPE:
2101	CODE:	2386	CODE:
2102	struct coro *coro = SvSTATE (coro_current);
2103	coro->cctx->idle_sp = 0;	2387	SvSTATE_current->cctx->idle_sp = 0;
2104		2388
2105	void	2389	void
2106	swap_defsv (Coro::State self)	2390	swap_defsv (Coro::State self)
2107	PROTOTYPE: $	2391	PROTOTYPE: $
2108	ALIAS:	2392	ALIAS:
2109	swap_defav = 1	2393	swap_defav = 1
2110	CODE:	2394	CODE:
2111	if (!self->slot)	2395	if (!self->slot)
2112	croak ("cannot swap state with coroutine that has no saved state");	2396	croak ("cannot swap state with coroutine that has no saved state,");
2113	else	2397	else
2114	{	2398	{
2115	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2399	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2400	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2117		2401
…		…
2142		2426
2143	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2427	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2144	coro_ready[i] = newAV ();	2428	coro_ready[i] = newAV ();
2145		2429
2146	{	2430	{
2147	SV *sv = perl_get_sv ("Coro::API", TRUE);	2431	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2148	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2149		2432
2150	coroapi.schedule = api_schedule;	2433	coroapi.schedule = api_schedule;
2151	coroapi.cede = api_cede;	2434	coroapi.cede = api_cede;
2152	coroapi.cede_notself = api_cede_notself;	2435	coroapi.cede_notself = api_cede_notself;
2153	coroapi.ready = api_ready;	2436	coroapi.ready = api_ready;
2154	coroapi.is_ready = api_is_ready;	2437	coroapi.is_ready = api_is_ready;
2155	coroapi.nready = &coro_nready;	2438	coroapi.nready = coro_nready;
2156	coroapi.current = coro_current;	2439	coroapi.current = coro_current;
2157		2440
2158	GCoroAPI = &coroapi;	2441	GCoroAPI = &coroapi;
2159	sv_setiv (sv, (IV)&coroapi);	2442	sv_setiv (sv, (IV)&coroapi);
2160	SvREADONLY_on (sv);	2443	SvREADONLY_on (sv);
2161	}	2444	}
2162	}	2445	}
		2446
		2447	void
		2448	schedule (...)
		2449	CODE:
		2450	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
		2451
		2452	void
		2453	cede (...)
		2454	CODE:
		2455	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
		2456
		2457	void
		2458	cede_notself (...)
		2459	CODE:
		2460	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
2163		2461
2164	void	2462	void
2165	_set_current (SV *current)	2463	_set_current (SV *current)
2166	PROTOTYPE: $	2464	PROTOTYPE: $
2167	CODE:	2465	CODE:
…		…
2170		2468
2171	void	2469	void
2172	_set_readyhook (SV *hook)	2470	_set_readyhook (SV *hook)
2173	PROTOTYPE: $	2471	PROTOTYPE: $
2174	CODE:	2472	CODE:
2175	LOCK;
2176	SvREFCNT_dec (coro_readyhook);	2473	SvREFCNT_dec (coro_readyhook);
2177	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2474	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178	UNLOCK;
2179		2475
2180	int	2476	int
2181	prio (Coro::State coro, int newprio = 0)	2477	prio (Coro::State coro, int newprio = 0)
		2478	PROTOTYPE: $;$
2182	ALIAS:	2479	ALIAS:
2183	nice = 1	2480	nice = 1
2184	CODE:	2481	CODE:
2185	{	2482	{
2186	RETVAL = coro->prio;	2483	RETVAL = coro->prio;
…		…
2201		2498
2202	SV *	2499	SV *
2203	ready (SV *self)	2500	ready (SV *self)
2204	PROTOTYPE: $	2501	PROTOTYPE: $
2205	CODE:	2502	CODE:
2206	RETVAL = boolSV (api_ready (self));	2503	RETVAL = boolSV (api_ready (aTHX_ self));
2207	OUTPUT:	2504	OUTPUT:
2208	RETVAL	2505	RETVAL
2209		2506
2210	int	2507	int
2211	nready (...)	2508	nready (...)
…		…
2218	# for async_pool speedup	2515	# for async_pool speedup
2219	void	2516	void
2220	_pool_1 (SV *cb)	2517	_pool_1 (SV *cb)
2221	CODE:	2518	CODE:
2222	{	2519	{
2223	struct coro *coro = SvSTATE (coro_current);
2224	HV hv = (HV )SvRV (coro_current);	2520	HV hv = (HV )SvRV (coro_current);
		2521	struct coro coro = SvSTATE_hv ((SV )hv);
2225	AV *defav = GvAV (PL_defgv);	2522	AV *defav = GvAV (PL_defgv);
2226	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2523	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227	AV *invoke_av;	2524	AV *invoke_av;
2228	int i, len;	2525	int i, len;
2229		2526
…		…
2250	{	2547	{
2251	av_fill (defav, len - 1);	2548	av_fill (defav, len - 1);
2252	for (i = 0; i < len; ++i)	2549	for (i = 0; i < len; ++i)
2253	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2550	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2254	}	2551	}
2255
2256	SvREFCNT_dec (invoke);
2257	}	2552	}
2258		2553
2259	void	2554	void
2260	_pool_2 (SV *cb)	2555	_pool_2 (SV *cb)
2261	CODE:	2556	CODE:
2262	{	2557	{
2263	struct coro *coro = SvSTATE (coro_current);	2558	struct coro *coro = SvSTATE_current;
2264		2559
2265	sv_setsv (cb, &PL_sv_undef);	2560	sv_setsv (cb, &PL_sv_undef);
2266		2561
2267	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2562	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2268	coro->saved_deffh = 0;	2563	coro->saved_deffh = 0;
…		…
2281	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2576	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282		2577
2283	coro->prio = 0;	2578	coro->prio = 0;
2284		2579
2285	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2580	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286	api_trace (coro_current, 0);	2581	api_trace (aTHX_ coro_current, 0);
2287		2582
2288	av_push (av_async_pool, newSVsv (coro_current));	2583	av_push (av_async_pool, newSVsv (coro_current));
2289	}	2584	}
2290
2291	#if 0
2292
2293	void
2294	_generator_call (...)
2295	PROTOTYPE: @
2296	PPCODE:
2297	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298	xxxx
2299	abort ();
2300
2301	SV *
2302	gensub (SV *sub, ...)
2303	PROTOTYPE: &;@
2304	CODE:
2305	{
2306	struct coro *coro;
2307	MAGIC *mg;
2308	CV *xcv;
2309	CV ncv = (CV )newSV_type (SVt_PVCV);
2310	int i;
2311
2312	CvGV (ncv) = CvGV (cv);
2313	CvFILE (ncv) = CvFILE (cv);
2314
2315	Newz (0, coro, 1, struct coro);
2316	coro->args = newAV ();
2317	coro->flags = CF_NEW;
2318
2319	av_extend (coro->args, items - 1);
2320	for (i = 1; i < items; i++)
2321	av_push (coro->args, newSVsv (ST (i)));
2322
2323	CvISXSUB_on (ncv);
2324	CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328	CvXSUB (ncv) = CvXSUB (xcv);
2329	CvANON_on (ncv);
2330
2331	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2332	RETVAL = newRV_noinc ((SV *)ncv);
2333	}
2334	OUTPUT:
2335	RETVAL
2336
2337	#endif
2338		2585
2339		2586
2340	MODULE = Coro::State PACKAGE = Coro::AIO	2587	MODULE = Coro::State PACKAGE = Coro::AIO
2341		2588
2342	void	2589	void
2343	_get_state (SV *self)	2590	_get_state (SV *self)
		2591	PROTOTYPE: $
2344	PPCODE:	2592	PPCODE:
2345	{	2593	{
2346	AV *defav = GvAV (PL_defgv);	2594	AV *defav = GvAV (PL_defgv);
2347	AV *av = newAV ();	2595	AV *av = newAV ();
2348	int i;	2596	int i;
…		…
2363		2611
2364	av_push (av, data_sv);	2612	av_push (av, data_sv);
2365		2613
2366	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2614	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2367		2615
2368	api_ready (self);	2616	api_ready (aTHX_ self);
2369	}	2617	}
2370		2618
2371	void	2619	void
2372	_set_state (SV *state)	2620	_set_state (SV *state)
2373	PROTOTYPE: $	2621	PROTOTYPE: $
…		…
2391	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2639	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392		2640
2393	BOOT:	2641	BOOT:
2394	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2642	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395		2643
2396	SV *	2644	void
2397	_schedule (...)	2645	_schedule (...)
2398	PROTOTYPE: @
2399	CODE:	2646	CODE:
2400	{	2647	{
2401	static int incede;	2648	static int incede;
2402		2649
2403	api_cede_notself ();	2650	api_cede_notself (aTHX);
2404		2651
2405	++incede;	2652	++incede;
2406	while (coro_nready >= incede && api_cede ())	2653	while (coro_nready >= incede && api_cede (aTHX))
2407	;	2654	;
2408		2655
2409	sv_setsv (sv_activity, &PL_sv_undef);	2656	sv_setsv (sv_activity, &PL_sv_undef);
2410	if (coro_nready >= incede)	2657	if (coro_nready >= incede)
2411	{	2658	{
…		…
2421		2668
2422	MODULE = Coro::State PACKAGE = PerlIO::cede	2669	MODULE = Coro::State PACKAGE = PerlIO::cede
2423		2670
2424	BOOT:	2671	BOOT:
2425	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2672	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2673
		2674	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2675
		2676	SV *
		2677	new (SV klass, SV count_ = 0)
		2678	CODE:
		2679	{
		2680	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2681	AV *av = newAV ();
		2682	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2683	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2684	}
		2685	OUTPUT:
		2686	RETVAL
		2687
		2688	SV *
		2689	count (SV *self)
		2690	CODE:
		2691	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2692	OUTPUT:
		2693	RETVAL
		2694
		2695	void
		2696	up (SV *self, int adjust = 1)
		2697	ALIAS:
		2698	adjust = 1
		2699	CODE:
		2700	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
		2701
		2702	void
		2703	down (SV *self)
		2704	CODE:
		2705	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
		2706
		2707	void
		2708	try (SV *self)
		2709	PPCODE:
		2710	{
		2711	AV av = (AV )SvRV (self);
		2712	SV *count_sv = AvARRAY (av)[0];
		2713	IV count = SvIVX (count_sv);
		2714
		2715	if (count > 0)
		2716	{
		2717	--count;
		2718	SvIVX (count_sv) = count;
		2719	XSRETURN_YES;
		2720	}
		2721	else
		2722	XSRETURN_NO;
		2723	}
		2724
		2725	void
		2726	waiters (SV *self)
		2727	CODE:
		2728	{
		2729	AV av = (AV )SvRV (self);
		2730
		2731	if (GIMME_V == G_SCALAR)
		2732	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2733	else
		2734	{
		2735	int i;
		2736	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2737	for (i = 1; i <= AvFILLp (av); ++i)
		2738	PUSHs (newSVsv (AvARRAY (av)[i]));
		2739	}
		2740	}
		2741

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Comparing Coro/Coro/State.xs (file contents): Revision 1.262 by root, Mon Nov 10 20:38:19 2008 UTC vs. Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.262 by root, Mon Nov 10 20:38:19 2008 UTC vs.
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC