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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.372 by root, Thu Oct 1 23:50:23 2009 UTC vs.
Revision 1.403 by root, Sun May 22 20:13:33 2011 UTC

…		…
		1	/* this works around a bug in mingw32 providing a non-working setjmp */
		2	#define USE_NO_MINGW_SETJMP_TWO_ARGS
		3
		4	#define NDEBUG 1
		5
1	#include "libcoro/coro.c"	6	#include "libcoro/coro.c"
2		7
3	#define PERL_NO_GET_CONTEXT	8	#define PERL_NO_GET_CONTEXT
4	#define PERL_EXT	9	#define PERL_EXT
5		10
8	#include "XSUB.h"	13	#include "XSUB.h"
9	#include "perliol.h"	14	#include "perliol.h"
10		15
11	#include "schmorp.h"	16	#include "schmorp.h"
12		17
		18	#include <stddef.h>
13	#include <stdio.h>	19	#include <stdio.h>
14	#include <errno.h>	20	#include <errno.h>
15	#include <assert.h>	21	#include <assert.h>
16		22
17	#ifdef WIN32	23	#ifndef SVs_PADSTALE
		24	# define SVs_PADSTALE 0
		25	#endif
		26
		27	#if defined(_WIN32)
		28	# undef HAS_GETTIMEOFDAY
18	# undef setjmp	29	# undef setjmp
19	# undef longjmp	30	# undef longjmp
20	# undef _exit	31	# undef _exit
21	# define setjmp _setjmp /* deep magic */	32	# define setjmp _setjmp /* deep magic */
22	#else	33	#else
…		…
116	static void (*u2time)(pTHX_ UV ret[2]);	127	static void (*u2time)(pTHX_ UV ret[2]);
117		128
118	/* we hijack an hopefully unused CV flag for our purposes */	129	/* we hijack an hopefully unused CV flag for our purposes */
119	#define CVf_SLF 0x4000	130	#define CVf_SLF 0x4000
120	static OP *pp_slf (pTHX);	131	static OP *pp_slf (pTHX);
		132	static void slf_destroy (pTHX_ struct coro *coro);
121		133
122	static U32 cctx_gen;	134	static U32 cctx_gen;
123	static size_t cctx_stacksize = CORO_STACKSIZE;	135	static size_t cctx_stacksize = CORO_STACKSIZE;
124	static struct CoroAPI coroapi;	136	static struct CoroAPI coroapi;
125	static AV main_mainstack; / used to differentiate between $main and others */	137	static AV main_mainstack; / used to differentiate between $main and others */
…		…
155	static char times_valid;	167	static char times_valid;
156		168
157	static struct coro_cctx *cctx_first;	169	static struct coro_cctx *cctx_first;
158	static int cctx_count, cctx_idle;	170	static int cctx_count, cctx_idle;
159		171
160	enum {	172	enum
		173	{
161	CC_MAPPED = 0x01,	174	CC_MAPPED = 0x01,
162	CC_NOREUSE = 0x02, /* throw this away after tracing */	175	CC_NOREUSE = 0x02, /* throw this away after tracing */
163	CC_TRACE = 0x04,	176	CC_TRACE = 0x04,
164	CC_TRACE_SUB = 0x08, /* trace sub calls */	177	CC_TRACE_SUB = 0x08, /* trace sub calls */
165	CC_TRACE_LINE = 0x10, /* trace each statement */	178	CC_TRACE_LINE = 0x10, /* trace each statement */
…		…
186	int valgrind_id;	199	int valgrind_id;
187	#endif	200	#endif
188	unsigned char flags;	201	unsigned char flags;
189	} coro_cctx;	202	} coro_cctx;
190		203
191	coro_cctx cctx_current; / the currently running cctx */	204	static coro_cctx cctx_current; / the currently running cctx */
192		205
193	/*****************************************************************************/	206	/*****************************************************************************/
194		207
		208	static MGVTBL coro_state_vtbl;
		209
195	enum {	210	enum
		211	{
196	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
197	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
198	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
199	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
200	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */	216	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
		217	CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
201	};	218	};
202		219
203	/* the structure where most of the perl state is stored, overlaid on the cxstack */	220	/* the structure where most of the perl state is stored, overlaid on the cxstack */
204	typedef struct	221	typedef struct
205	{	222	{
…		…
211	#define VAR(name,type) type name;	228	#define VAR(name,type) type name;
212	# include "state.h"	229	# include "state.h"
213	#undef VAR	230	#undef VAR
214	} perl_slots;	231	} perl_slots;
215		232
		233	// how many context stack entries do we need for perl_slots
216	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	234	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217		235
218	/* this is a structure representing a perl-level coroutine */	236	/* this is a structure representing a perl-level coroutine */
219	struct coro {	237	struct coro
		238	{
220	/* the C coroutine allocated to this perl coroutine, if any */	239	/* the C coroutine allocated to this perl coroutine, if any */
221	coro_cctx *cctx;	240	coro_cctx *cctx;
222		241
223	/* ready queue */	242	/* ready queue */
224	struct coro *next_ready;	243	struct coro *next_ready;
…		…
226	/* state data */	245	/* state data */
227	struct CoroSLF slf_frame; /* saved slf frame */	246	struct CoroSLF slf_frame; /* saved slf frame */
228	AV *mainstack;	247	AV *mainstack;
229	perl_slots slot; / basically the saved sp */	248	perl_slots slot; / basically the saved sp */
230		249
231	CV startcv; / the CV to execute */	250	CV startcv; / the CV to execute */
232	AV args; / data associated with this coroutine (initial args) */	251	AV args; / data associated with this coroutine (initial args) */
233	int refcnt; /* coroutines are refcounted, yes */
234	int flags; /* CF_ flags */	252	int flags; /* CF_ flags */
235	HV hv; / the perl hash associated with this coro, if any */	253	HV hv; / the perl hash associated with this coro, if any */
236	void (on_destroy)(pTHX_ struct coro coro);
237		254
238	/* statistics */	255	/* statistics */
239	int usecount; /* number of transfers to this coro */	256	int usecount; /* number of transfers to this coro */
240		257
241	/* coro process data */	258	/* coro process data */
242	int prio;	259	int prio;
243	SV except; / exception to be thrown */	260	SV except; / exception to be thrown */
244	SV *rouse_cb;	261	SV rouse_cb; / last rouse callback */
		262	AV on_destroy; / callbacks or coros to notify on destroy */
		263	AV status; / the exit status list */
245		264
246	/* async_pool */	265	/* async_pool */
247	SV *saved_deffh;	266	SV *saved_deffh;
248	SV *invoke_cb;	267	SV *invoke_cb;
249	AV *invoke_av;	268	AV *invoke_av;
250		269
251	/* on_enter/on_leave */	270	/* on_enter/on_leave */
252	AV *on_enter;	271	AV *on_enter;
253	AV *on_leave;	272	AV *on_leave;
254		273
		274	/* swap_sv */
		275	AV *swap_sv;
		276
255	/* times */	277	/* times */
256	coro_ts t_cpu, t_real;	278	coro_ts t_cpu, t_real;
257		279
258	/* linked list */	280	/* linked list */
259	struct coro next, prev;	281	struct coro next, prev;
…		…
262	typedef struct coro *Coro__State;	284	typedef struct coro *Coro__State;
263	typedef struct coro *Coro__State_or_hashref;	285	typedef struct coro *Coro__State_or_hashref;
264		286
265	/* the following variables are effectively part of the perl context */	287	/* the following variables are effectively part of the perl context */
266	/* and get copied between struct coro and these variables */	288	/* and get copied between struct coro and these variables */
267	/* the mainr easonw e don't support windows process emulation */	289	/* the main reason we don't support windows process emulation */
268	static struct CoroSLF slf_frame; /* the current slf frame */	290	static struct CoroSLF slf_frame; /* the current slf frame */
269		291
270	/ Coro ******************************************************************/	292	/ Coro ******************************************************************/
271		293
272	#define CORO_PRIO_MAX 3	294	#define CORO_PRIO_MAX 3
…		…
278		300
279	/* for Coro.pm */	301	/* for Coro.pm */
280	static SV *coro_current;	302	static SV *coro_current;
281	static SV *coro_readyhook;	303	static SV *coro_readyhook;
282	static struct coro coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; / head\|tail */	304	static struct coro coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; / head\|tail */
283	static CV cv_coro_run, cv_coro_terminate;	305	static CV *cv_coro_run;
284	static struct coro *coro_first;	306	static struct coro *coro_first;
285	#define coro_nready coroapi.nready	307	#define coro_nready coroapi.nready
286		308
287	/ Coro::Select **********************************************************/	309	/ Coro::Select **********************************************************/
288		310
…		…
301	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */	323	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
302	PL_op->op_flags \|= OPf_STACKED;	324	PL_op->op_flags \|= OPf_STACKED;
303	PL_op->op_private = 0;	325	PL_op->op_private = 0;
304	return PL_ppaddr [OP_ENTERSUB](aTHX);	326	return PL_ppaddr [OP_ENTERSUB](aTHX);
305	}	327	}
		328
		329	/ time stuff ************************************************************/
		330
		331	#ifdef HAS_GETTIMEOFDAY
		332
		333	static void
		334	coro_u2time (pTHX_ UV ret[2])
		335	{
		336	struct timeval tv;
		337	gettimeofday (&tv, 0);
		338
		339	ret [0] = tv.tv_sec;
		340	ret [1] = tv.tv_usec;
		341	}
		342
		343	static double
		344	coro_nvtime ()
		345	{
		346	struct timeval tv;
		347	gettimeofday (&tv, 0);
		348
		349	return tv.tv_sec + tv.tv_usec * 1e-6;
		350	}
		351
		352	static void
		353	time_init (pTHX)
		354	{
		355	nvtime = coro_nvtime;
		356	u2time = coro_u2time;
		357	}
		358
		359	#else
		360
		361	static void
		362	time_init (pTHX)
		363	{
		364	SV **svp;
		365
		366	require_pv ("Time/HiRes.pm");
		367
		368	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		369
		370	if (!svp) croak ("Time::HiRes is required, but missing. Caught");
		371	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
		372
		373	nvtime = INT2PTR (double ()(), SvIV (svp));
		374
		375	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		376	u2time = INT2PTR (void ()(pTHX_ UV ret[2]), SvIV (svp));
		377	}
		378
		379	#endif
306		380
307	/ lowlevel stuff ********************************************************/	381	/ lowlevel stuff ********************************************************/
308		382
309	static SV *	383	static SV *
310	coro_get_sv (pTHX_ const char *name, int create)	384	coro_get_sv (pTHX_ const char *name, int create)
…		…
400	: 0)	474	: 0)
401		475
402	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	476	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
403	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)	477	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
404		478
		479	INLINE MAGIC *
		480	SvSTATEhv_p (pTHX_ SV *coro)
		481	{
		482	MAGIC *mg;
		483
		484	if (expect_true (
		485	SvTYPE (coro) == SVt_PVHV
		486	&& (mg = CORO_MAGIC_state (coro))
		487	&& mg->mg_virtual == &coro_state_vtbl
		488	))
		489	return mg;
		490
		491	return 0;
		492	}
		493
405	INLINE struct coro *	494	INLINE struct coro *
406	SvSTATE_ (pTHX_ SV *coro)	495	SvSTATE_ (pTHX_ SV *coro)
407	{	496	{
408	HV *stash;
409	MAGIC *mg;	497	MAGIC *mg;
410		498
411	if (SvROK (coro))	499	if (SvROK (coro))
412	coro = SvRV (coro);	500	coro = SvRV (coro);
413		501
414	if (expect_false (SvTYPE (coro) != SVt_PVHV))	502	mg = SvSTATEhv_p (aTHX_ coro);
		503	if (!mg)
415	croak ("Coro::State object required");	504	croak ("Coro::State object required");
416		505
417	stash = SvSTASH (coro);
418	if (expect_false (stash != coro_stash && stash != coro_state_stash))
419	{
420	/* very slow, but rare, check */
421	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
422	croak ("Coro::State object required");
423	}
424
425	mg = CORO_MAGIC_state (coro);
426	return (struct coro *)mg->mg_ptr;	506	return (struct coro *)mg->mg_ptr;
427	}	507	}
428		508
429	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	509	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
430		510
…		…
550	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	630	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
551	}	631	}
552		632
553	/ load & save, init *****************************************************/	633	/ load & save, init *****************************************************/
554		634
		635	/* swap sv heads, at least logically */
		636	static void
		637	swap_svs (pTHX_ Coro__State c)
		638	{
		639	int i;
		640
		641	for (i = 0; i <= AvFILLp (c->swap_sv); )
		642	{
		643	SV *a = AvARRAY (c->swap_sv)[i++];
		644	SV *b = AvARRAY (c->swap_sv)[i++];
		645
		646	const U32 keep = SVs_PADSTALE \| SVs_PADTMP \| SVs_PADMY; /* keep these flags */
		647	SV tmp;
		648
		649	/* swap sv_any */
		650	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		651
		652	/* swap sv_flags */
		653	SvFLAGS (&tmp) = SvFLAGS (a);
		654	SvFLAGS (a) = (SvFLAGS (a) & keep) \| (SvFLAGS (b ) & ~keep);
		655	SvFLAGS (b) = (SvFLAGS (b) & keep) \| (SvFLAGS (&tmp) & ~keep);
		656
		657	#if PERL_VERSION_ATLEAST (5,10,0)
		658	/* perl 5.10 complicates this _quite_ a bit, but it also is
		659	* much faster, so no quarrels here. alternatively, we could
		660	* sv_upgrade to avoid this.
		661	*/
		662	{
		663	/* swap sv_u */
		664	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		665
		666	/* if SvANY points to the head, we need to adjust the pointers,
		667	* as the pointer for a still points to b, and maybe vice versa.
		668	*/
		669	#define svany_in_head(type) \
		670	(((1 << SVt_NULL) \| (1 << SVt_BIND) \| (1 << SVt_IV) \| (1 << SVt_RV)) & (1 << (type)))
		671
		672	if (svany_in_head (SvTYPE (a)))
		673	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		674
		675	if (svany_in_head (SvTYPE (b)))
		676	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		677	}
		678	#endif
		679	}
		680	}
		681
		682	#define SWAP_SVS(coro) \
		683	if (expect_false ((coro)->swap_sv)) \
		684	swap_svs (aTHX_ (coro))
		685
555	static void	686	static void
556	on_enterleave_call (pTHX_ SV *cb);	687	on_enterleave_call (pTHX_ SV *cb);
557		688
558	static void	689	static void
559	load_perl (pTHX_ Coro__State c)	690	load_perl (pTHX_ Coro__State c)
…		…
605	int i;	736	int i;
606		737
607	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	738	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
608	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	739	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
609	}	740	}
		741
		742	SWAP_SVS (c);
610	}	743	}
611		744
612	static void	745	static void
613	save_perl (pTHX_ Coro__State c)	746	save_perl (pTHX_ Coro__State c)
614	{	747	{
		748	SWAP_SVS (c);
		749
615	if (expect_false (c->on_leave))	750	if (expect_false (c->on_leave))
616	{	751	{
617	int i;	752	int i;
618		753
619	for (i = AvFILLp (c->on_leave); i >= 0; --i)	754	for (i = AvFILLp (c->on_leave); i >= 0; --i)
…		…
677		812
678	PUTBACK;	813	PUTBACK;
679	}	814	}
680		815
681	/* allocate some space on the context stack for our purposes */	816	/* allocate some space on the context stack for our purposes */
682	/* we manually unroll here, as usually 2 slots is enough */	817	if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
683	if (SLOT_COUNT >= 1) CXINC;
684	if (SLOT_COUNT >= 2) CXINC;
685	if (SLOT_COUNT >= 3) CXINC;
686	{	818	{
687	unsigned int i;	819	unsigned int i;
		820
688	for (i = 3; i < SLOT_COUNT; ++i)	821	for (i = 0; i < SLOT_COUNT; ++i)
689	CXINC;	822	CXINC;
690	}	823
691	cxstack_ix -= SLOT_COUNT; /* undo allocation */	824	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		825	}
692		826
693	c->mainstack = PL_mainstack;	827	c->mainstack = PL_mainstack;
694		828
695	{	829	{
696	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);	830	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
…		…
717	# define coro_init_stacks(thx) init_stacks ()	851	# define coro_init_stacks(thx) init_stacks ()
718	#else	852	#else
719	static void	853	static void
720	coro_init_stacks (pTHX)	854	coro_init_stacks (pTHX)
721	{	855	{
722	PL_curstackinfo = new_stackinfo(32, 8);	856	PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
723	PL_curstackinfo->si_type = PERLSI_MAIN;	857	PL_curstackinfo->si_type = PERLSI_MAIN;
724	PL_curstack = PL_curstackinfo->si_stack;	858	PL_curstack = PL_curstackinfo->si_stack;
725	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	859	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
726		860
727	PL_stack_base = AvARRAY(PL_curstack);	861	PL_stack_base = AvARRAY(PL_curstack);
…		…
834	#endif	968	#endif
835		969
836	/*	970	/*
837	* This overrides the default magic get method of %SIG elements.	971	* This overrides the default magic get method of %SIG elements.
838	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	972	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
839	* and instead of trying to save and restore the hash elements, we just provide	973	* and instead of trying to save and restore the hash elements (extremely slow),
840	* readback here.	974	* we just provide our own readback here.
841	*/	975	*/
842	static int	976	static int
843	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)	977	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
844	{	978	{
845	const char *s = MgPV_nolen_const (mg);	979	const char *s = MgPV_nolen_const (mg);
…		…
926	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1060	slf_check_repeat (pTHX_ struct CoroSLF *frame)
927	{	1061	{
928	return 1;	1062	return 1;
929	}	1063	}
930		1064
931	static UNOP coro_setup_op;	1065	static UNOP init_perl_op;
932		1066
933	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1067	static void NOINLINE /* noinline to keep it out of the transfer fast path */
934	coro_setup (pTHX_ struct coro *coro)	1068	init_perl (pTHX_ struct coro *coro)
935	{	1069	{
936	/*	1070	/*
937	* emulate part of the perl startup here.	1071	* emulate part of the perl startup here.
938	*/	1072	*/
939	coro_init_stacks (aTHX);	1073	coro_init_stacks (aTHX);
…		…
946	PL_comppad_name_fill = 0;	1080	PL_comppad_name_fill = 0;
947	PL_comppad_name_floor = 0;	1081	PL_comppad_name_floor = 0;
948	PL_curpm = 0;	1082	PL_curpm = 0;
949	PL_curpad = 0;	1083	PL_curpad = 0;
950	PL_localizing = 0;	1084	PL_localizing = 0;
951	PL_dirty = 0;
952	PL_restartop = 0;	1085	PL_restartop = 0;
953	#if PERL_VERSION_ATLEAST (5,10,0)	1086	#if PERL_VERSION_ATLEAST (5,10,0)
954	PL_parser = 0;	1087	PL_parser = 0;
955	#endif	1088	#endif
956	PL_hints = 0;	1089	PL_hints = 0;
957		1090
958	/* recreate the die/warn hooks */	1091	/* recreate the die/warn hooks */
959	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	1092	PL_diehook = SvREFCNT_inc (rv_diehook);
960	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	1093	PL_warnhook = SvREFCNT_inc (rv_warnhook);
961		1094
962	GvSV (PL_defgv) = newSV (0);	1095	GvSV (PL_defgv) = newSV (0);
963	GvAV (PL_defgv) = coro->args; coro->args = 0;	1096	GvAV (PL_defgv) = coro->args; coro->args = 0;
964	GvSV (PL_errgv) = newSV (0);	1097	GvSV (PL_errgv) = newSV (0);
965	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	1098	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
…		…
986	/* this newly created coroutine might be run on an existing cctx which most	1119	/* this newly created coroutine might be run on an existing cctx which most
987	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	1120	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
988	*/	1121	*/
989	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1122	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
990	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1123	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		1124	slf_frame.destroy = 0;
991		1125
992	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1126	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
993	coro_setup_op.op_next = PL_op;	1127	init_perl_op.op_next = PL_op;
994	coro_setup_op.op_type = OP_ENTERSUB;	1128	init_perl_op.op_type = OP_ENTERSUB;
995	coro_setup_op.op_ppaddr = pp_slf;	1129	init_perl_op.op_ppaddr = pp_slf;
996	/* no flags etc. required, as an init function won't be called */	1130	/* no flags etc. required, as an init function won't be called */
997		1131
998	PL_op = (OP *)&coro_setup_op;	1132	PL_op = (OP *)&init_perl_op;
999		1133
1000	/* copy throw, in case it was set before coro_setup */	1134	/* copy throw, in case it was set before init_perl */
1001	CORO_THROW = coro->except;	1135	CORO_THROW = coro->except;
		1136
		1137	SWAP_SVS (coro);
1002		1138
1003	if (expect_false (enable_times))	1139	if (expect_false (enable_times))
1004	{	1140	{
1005	coro_times_update ();	1141	coro_times_update ();
1006	coro_times_sub (coro);	1142	coro_times_sub (coro);
…		…
1027	dounwind (-1);	1163	dounwind (-1);
1028	}	1164	}
1029	}	1165	}
1030		1166
1031	static void	1167	static void
1032	coro_destruct_perl (pTHX_ struct coro *coro)	1168	destroy_perl (pTHX_ struct coro *coro)
1033	{	1169	{
1034	SV *svf [9];	1170	SV *svf [9];
1035		1171
1036	{	1172	{
		1173	SV *old_current = SvRV (coro_current);
1037	struct coro *current = SvSTATE_current;	1174	struct coro *current = SvSTATE (old_current);
1038		1175
1039	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));	1176	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1040		1177
1041	save_perl (aTHX_ current);	1178	save_perl (aTHX_ current);
		1179
		1180	/* this will cause transfer_check to croak on block*/
		1181	SvRV_set (coro_current, (SV *)coro->hv);
		1182
1042	load_perl (aTHX_ coro);	1183	load_perl (aTHX_ coro);
1043		1184
1044	coro_unwind_stacks (aTHX);	1185	coro_unwind_stacks (aTHX);
		1186
		1187	/* restore swapped sv's */
		1188	SWAP_SVS (coro);
		1189
1045	coro_destruct_stacks (aTHX);	1190	coro_destruct_stacks (aTHX);
1046		1191
1047	// now save some sv's to be free'd later	1192	// now save some sv's to be free'd later
1048	svf [0] = GvSV (PL_defgv);	1193	svf [0] = GvSV (PL_defgv);
1049	svf [1] = (SV *)GvAV (PL_defgv);	1194	svf [1] = (SV *)GvAV (PL_defgv);
…		…
1054	svf [6] = (SV *)GvHV (PL_hintgv);	1199	svf [6] = (SV *)GvHV (PL_hintgv);
1055	svf [7] = PL_diehook;	1200	svf [7] = PL_diehook;
1056	svf [8] = PL_warnhook;	1201	svf [8] = PL_warnhook;
1057	assert (9 == sizeof (svf) / sizeof (*svf));	1202	assert (9 == sizeof (svf) / sizeof (*svf));
1058		1203
		1204	SvRV_set (coro_current, old_current);
		1205
1059	load_perl (aTHX_ current);	1206	load_perl (aTHX_ current);
1060	}	1207	}
1061		1208
1062	{	1209	{
1063	unsigned int i;	1210	unsigned int i;
…		…
1075	INLINE void	1222	INLINE void
1076	free_coro_mortal (pTHX)	1223	free_coro_mortal (pTHX)
1077	{	1224	{
1078	if (expect_true (coro_mortal))	1225	if (expect_true (coro_mortal))
1079	{	1226	{
1080	SvREFCNT_dec (coro_mortal);	1227	SvREFCNT_dec ((SV *)coro_mortal);
1081	coro_mortal = 0;	1228	coro_mortal = 0;
1082	}	1229	}
1083	}	1230	}
1084		1231
1085	static int	1232	static int
…		…
1372	cctx_destroy (coro_cctx *cctx)	1519	cctx_destroy (coro_cctx *cctx)
1373	{	1520	{
1374	if (!cctx)	1521	if (!cctx)
1375	return;	1522	return;
1376		1523
1377	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?	1524	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1378		1525
1379	--cctx_count;	1526	--cctx_count;
1380	coro_destroy (&cctx->cctx);	1527	coro_destroy (&cctx->cctx);
1381		1528
1382	/* coro_transfer creates new, empty cctx's */	1529	/* coro_transfer creates new, empty cctx's */
…		…
1448	if (expect_true (prev != next))	1595	if (expect_true (prev != next))
1449	{	1596	{
1450	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1597	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1451	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");	1598	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1452		1599
1453	if (expect_false (next->flags & (CF_RUNNING \| CF_DESTROYED \| CF_SUSPENDED)))	1600	if (expect_false (next->flags & (CF_RUNNING \| CF_ZOMBIE \| CF_SUSPENDED)))
1454	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");	1601	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1455		1602
1456	#if !PERL_VERSION_ATLEAST (5,10,0)	1603	#if !PERL_VERSION_ATLEAST (5,10,0)
1457	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1604	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1458	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1605	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
…		…
1492	if (expect_false (next->flags & CF_NEW))	1639	if (expect_false (next->flags & CF_NEW))
1493	{	1640	{
1494	/* need to start coroutine */	1641	/* need to start coroutine */
1495	next->flags &= ~CF_NEW;	1642	next->flags &= ~CF_NEW;
1496	/* setup coroutine call */	1643	/* setup coroutine call */
1497	coro_setup (aTHX_ next);	1644	init_perl (aTHX_ next);
1498	}	1645	}
1499	else	1646	else
1500	load_perl (aTHX_ next);	1647	load_perl (aTHX_ next);
1501		1648
1502	/* possibly untie and reuse the cctx */	1649	/* possibly untie and reuse the cctx */
…		…
1541	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1688	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1542	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1689	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1543		1690
1544	/ high level stuff ******************************************************/	1691	/ high level stuff ******************************************************/
1545		1692
		1693	/* this function is actually Coro, not Coro::State, but we call it from here */
		1694	/* because it is convenient - but it hasn't been declared yet for that reason */
1546	static int	1695	static void
		1696	coro_call_on_destroy (pTHX_ struct coro *coro);
		1697
		1698	static void
1547	coro_state_destroy (pTHX_ struct coro *coro)	1699	coro_state_destroy (pTHX_ struct coro *coro)
1548	{	1700	{
1549	if (coro->flags & CF_DESTROYED)	1701	if (coro->flags & CF_ZOMBIE)
1550	return 0;	1702	return;
1551		1703
1552	if (coro->on_destroy && !PL_dirty)
1553	coro->on_destroy (aTHX_ coro);	1704	slf_destroy (aTHX_ coro);
1554		1705
1555	coro->flags \|= CF_DESTROYED;	1706	coro->flags \|= CF_ZOMBIE;
1556		1707
1557	if (coro->flags & CF_READY)	1708	if (coro->flags & CF_READY)
1558	{	1709	{
1559	/* reduce nready, as destroying a ready coro effectively unreadies it */	1710	/* reduce nready, as destroying a ready coro effectively unreadies it */
1560	/* alternative: look through all ready queues and remove the coro */	1711	/* alternative: look through all ready queues and remove the coro */
1561	--coro_nready;	1712	--coro_nready;
1562	}	1713	}
1563	else	1714	else
1564	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1715	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
		1716
		1717	if (coro->next) coro->next->prev = coro->prev;
		1718	if (coro->prev) coro->prev->next = coro->next;
		1719	if (coro == coro_first) coro_first = coro->next;
1565		1720
1566	if (coro->mainstack	1721	if (coro->mainstack
1567	&& coro->mainstack != main_mainstack	1722	&& coro->mainstack != main_mainstack
1568	&& coro->slot	1723	&& coro->slot
1569	&& !PL_dirty)	1724	&& !PL_dirty)
1570	coro_destruct_perl (aTHX_ coro);	1725	destroy_perl (aTHX_ coro);
1571		1726
1572	cctx_destroy (coro->cctx);	1727	cctx_destroy (coro->cctx);
1573	SvREFCNT_dec (coro->startcv);	1728	SvREFCNT_dec (coro->startcv);
1574	SvREFCNT_dec (coro->args);	1729	SvREFCNT_dec (coro->args);
		1730	SvREFCNT_dec (coro->swap_sv);
1575	SvREFCNT_dec (CORO_THROW);	1731	SvREFCNT_dec (CORO_THROW);
1576		1732
1577	if (coro->next) coro->next->prev = coro->prev;	1733	coro_call_on_destroy (aTHX_ coro);
1578	if (coro->prev) coro->prev->next = coro->next;
1579	if (coro == coro_first) coro_first = coro->next;
1580		1734
1581	return 1;	1735	/* more destruction mayhem in coro_state_free */
1582	}	1736	}
1583		1737
1584	static int	1738	static int
1585	coro_state_free (pTHX_ SV sv, MAGIC mg)	1739	coro_state_free (pTHX_ SV sv, MAGIC mg)
1586	{	1740	{
1587	struct coro coro = (struct coro )mg->mg_ptr;	1741	struct coro coro = (struct coro )mg->mg_ptr;
1588	mg->mg_ptr = 0;	1742	mg->mg_ptr = 0;
1589		1743
1590	coro->hv = 0;
1591
1592	if (--coro->refcnt < 0)
1593	{
1594	coro_state_destroy (aTHX_ coro);	1744	coro_state_destroy (aTHX_ coro);
		1745	SvREFCNT_dec (coro->on_destroy);
		1746	SvREFCNT_dec (coro->status);
		1747
1595	Safefree (coro);	1748	Safefree (coro);
1596	}
1597		1749
1598	return 0;	1750	return 0;
1599	}	1751	}
1600		1752
1601	static int	1753	static int
1602	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)	1754	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
1603	{	1755	{
1604	struct coro coro = (struct coro )mg->mg_ptr;	1756	/* called when perl clones the current process the slow way (windows process emulation) */
1605		1757	/* WE SIMply nuke the pointers in the copy, causing perl to croak */
1606	++coro->refcnt;	1758	mg->mg_ptr = 0;
		1759	mg->mg_virtual = 0;
1607		1760
1608	return 0;	1761	return 0;
1609	}	1762	}
1610		1763
1611	static MGVTBL coro_state_vtbl = {	1764	static MGVTBL coro_state_vtbl = {
…		…
1737	struct coro *next = coro_deq (aTHX);	1890	struct coro *next = coro_deq (aTHX);
1738		1891
1739	if (expect_true (next))	1892	if (expect_true (next))
1740	{	1893	{
1741	/* cannot transfer to destroyed coros, skip and look for next */	1894	/* cannot transfer to destroyed coros, skip and look for next */
1742	if (expect_false (next->flags & (CF_DESTROYED \| CF_SUSPENDED)))	1895	if (expect_false (next->flags & (CF_ZOMBIE \| CF_SUSPENDED)))
1743	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */	1896	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744	else	1897	else
1745	{	1898	{
1746	next->flags &= ~CF_READY;	1899	next->flags &= ~CF_READY;
1747	--coro_nready;	1900	--coro_nready;
…		…
1754	{	1907	{
1755	/* nothing to schedule: call the idle handler */	1908	/* nothing to schedule: call the idle handler */
1756	if (SvROK (sv_idle)	1909	if (SvROK (sv_idle)
1757	&& SvOBJECT (SvRV (sv_idle)))	1910	&& SvOBJECT (SvRV (sv_idle)))
1758	{	1911	{
		1912	if (SvRV (sv_idle) == SvRV (coro_current))
		1913	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1914
1759	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1915	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760	api_ready (aTHX_ SvRV (sv_idle));	1916	api_ready (aTHX_ SvRV (sv_idle));
1761	--coro_nready;	1917	--coro_nready;
1762	}	1918	}
1763	else	1919	else
…		…
1877	coro->slot->runops = RUNOPS_DEFAULT;	2033	coro->slot->runops = RUNOPS_DEFAULT;
1878	}	2034	}
1879	}	2035	}
1880		2036
1881	static void	2037	static void
		2038	coro_push_av (pTHX_ AV *av, I32 gimme_v)
		2039	{
		2040	if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
		2041	{
		2042	dSP;
		2043
		2044	if (gimme_v == G_SCALAR)
		2045	XPUSHs (AvARRAY (av)[AvFILLp (av)]);
		2046	else
		2047	{
		2048	int i;
		2049	EXTEND (SP, AvFILLp (av) + 1);
		2050
		2051	for (i = 0; i <= AvFILLp (av); ++i)
		2052	PUSHs (AvARRAY (av)[i]);
		2053	}
		2054
		2055	PUTBACK;
		2056	}
		2057	}
		2058
		2059	static void
		2060	coro_push_on_destroy (pTHX_ struct coro coro, SV cb)
		2061	{
		2062	if (!coro->on_destroy)
		2063	coro->on_destroy = newAV ();
		2064
		2065	av_push (coro->on_destroy, cb);
		2066	}
		2067
		2068	static void
		2069	slf_destroy_join (pTHX_ struct CoroSLF *frame)
		2070	{
		2071	SvREFCNT_dec ((SV )((struct coro )frame->data)->hv);
		2072	}
		2073
		2074	static int
		2075	slf_check_join (pTHX_ struct CoroSLF *frame)
		2076	{
		2077	struct coro coro = (struct coro )frame->data;
		2078
		2079	if (!coro->status)
		2080	return 1;
		2081
		2082	frame->destroy = 0;
		2083
		2084	coro_push_av (aTHX_ coro->status, GIMME_V);
		2085
		2086	SvREFCNT_dec ((SV *)coro->hv);
		2087
		2088	return 0;
		2089	}
		2090
		2091	static void
		2092	slf_init_join (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2093	{
		2094	struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
		2095
		2096	if (items > 1)
		2097	croak ("join called with too many arguments");
		2098
		2099	if (coro->status)
		2100	frame->prepare = prepare_nop;
		2101	else
		2102	{
		2103	coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
		2104	frame->prepare = prepare_schedule;
		2105	}
		2106
		2107	frame->check = slf_check_join;
		2108	frame->destroy = slf_destroy_join;
		2109	frame->data = (void *)coro;
		2110	SvREFCNT_inc (coro->hv);
		2111	}
		2112
		2113	static void
1882	coro_call_on_destroy (pTHX_ struct coro *coro)	2114	coro_call_on_destroy (pTHX_ struct coro *coro)
1883	{	2115	{
1884	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);	2116	AV *od = coro->on_destroy;
1885	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886		2117
1887	if (on_destroyp)	2118	if (!od)
1888	{	2119	return;
1889	AV on_destroy = (AV )SvRV (*on_destroyp);
1890		2120
1891	while (AvFILLp (on_destroy) >= 0)	2121	while (AvFILLp (od) >= 0)
		2122	{
		2123	SV *cb = sv_2mortal (av_pop (od));
		2124
		2125	/* coro hv's (and only hv's at the moment) are supported as well */
		2126	if (SvSTATEhv_p (aTHX_ cb))
		2127	api_ready (aTHX_ cb);
		2128	else
1892	{	2129	{
1893	dSP; /* don't disturb outer sp */	2130	dSP; /* don't disturb outer sp */
1894	SV *cb = av_pop (on_destroy);
1895
1896	PUSHMARK (SP);	2131	PUSHMARK (SP);
1897		2132
1898	if (statusp)	2133	if (coro->status)
1899	{	2134	{
1900	int i;	2135	PUTBACK;
1901	AV status = (AV )SvRV (*statusp);	2136	coro_push_av (aTHX_ coro->status, G_ARRAY);
1902	EXTEND (SP, AvFILLp (status) + 1);	2137	SPAGAIN;
1903
1904	for (i = 0; i <= AvFILLp (status); ++i)
1905	PUSHs (AvARRAY (status)[i]);
1906	}	2138	}
1907		2139
1908	PUTBACK;	2140	PUTBACK;
1909	call_sv (sv_2mortal (cb), G_VOID \| G_DISCARD);	2141	call_sv (cb, G_VOID \| G_DISCARD);
1910	}	2142	}
1911	}	2143	}
1912	}	2144	}
1913		2145
1914	static void	2146	static void
1915	slf_init_terminate (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)	2147	coro_set_status (pTHX_ struct coro coro, SV *arg, int items)
1916	{	2148	{
1917	int i;	2149	AV *av;
1918	HV hv = (HV )SvRV (coro_current);	2150
1919	AV *av = newAV ();	2151	if (coro->status)
		2152	{
		2153	av = coro->status;
		2154	av_clear (av);
		2155	}
		2156	else
		2157	av = coro->status = newAV ();
1920		2158
1921	/* items are actually not so common, so optimise for this case */	2159	/* items are actually not so common, so optimise for this case */
1922	if (items)	2160	if (items)
1923	{	2161	{
		2162	int i;
		2163
1924	av_extend (av, items - 1);	2164	av_extend (av, items - 1);
1925		2165
1926	for (i = 0; i < items; ++i)	2166	for (i = 0; i < items; ++i)
1927	av_push (av, SvREFCNT_inc_NN (arg [i]));	2167	av_push (av, SvREFCNT_inc_NN (arg [i]));
1928	}	2168	}
		2169	}
1929		2170
1930	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2171	static void
1931		2172	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF frame, HV coro_hv)
		2173	{
1932	av_push (av_destroy, (SV )newRV_inc ((SV )hv)); /* RVinc for perl */	2174	av_push (av_destroy, (SV )newRV_inc ((SV )coro_hv)); /* RVinc for perl */
1933	api_ready (aTHX_ sv_manager);	2175	api_ready (aTHX_ sv_manager);
1934		2176
1935	frame->prepare = prepare_schedule;	2177	frame->prepare = prepare_schedule;
1936	frame->check = slf_check_repeat;	2178	frame->check = slf_check_repeat;
1937		2179
1938	/* as a minor optimisation, we could unwind all stacks here */	2180	/* as a minor optimisation, we could unwind all stacks here */
1939	/* but that puts extra pressure on pp_slf, and is not worth much */	2181	/* but that puts extra pressure on pp_slf, and is not worth much */
1940	/coro_unwind_stacks (aTHX);/	2182	/coro_unwind_stacks (aTHX);/
		2183	}
		2184
		2185	static void
		2186	slf_init_terminate (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2187	{
		2188	HV coro_hv = (HV )SvRV (coro_current);
		2189
		2190	coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
		2191	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
		2192	}
		2193
		2194	static void
		2195	slf_init_cancel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2196	{
		2197	HV *coro_hv;
		2198	struct coro *coro;
		2199
		2200	if (items <= 0)
		2201	croak ("Coro::cancel called without coro object,");
		2202
		2203	coro = SvSTATE (arg [0]);
		2204	coro_hv = coro->hv;
		2205
		2206	coro_set_status (aTHX_ coro, arg + 1, items - 1);
		2207
		2208	if (expect_false (coro->flags & CF_NOCANCEL))
		2209	{
		2210	/* coro currently busy cancelling something, so just notify it */
		2211	coro->slf_frame.data = (void *)coro;
		2212
		2213	frame->prepare = prepare_nop;
		2214	frame->check = slf_check_nop;
		2215	}
		2216	else if (coro_hv == (HV *)SvRV (coro_current))
		2217	{
		2218	/* cancelling the current coro is allowed, and equals terminate */
		2219	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
		2220	}
		2221	else
		2222	{
		2223	struct coro *self = SvSTATE_current;
		2224
		2225	/* otherwise we cancel directly, purely for speed reasons
		2226	* unfortunately, this requires some magic trickery, as
		2227	* somebody else could cancel us, so we have to fight the cancellation.
		2228	* this is ugly, and hopefully fully worth the extra speed.
		2229	* besides, I can't get the slow-but-safe version working...
		2230	*/
		2231	slf_frame.data = 0;
		2232	self->flags \|= CF_NOCANCEL;
		2233	coro_state_destroy (aTHX_ coro);
		2234	self->flags &= ~CF_NOCANCEL;
		2235
		2236	if (slf_frame.data)
		2237	{
		2238	/* while we were busy we have been cancelled, so terminate */
		2239	slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
		2240	}
		2241	else
		2242	{
		2243	frame->prepare = prepare_nop;
		2244	frame->check = slf_check_nop;
		2245	}
		2246	}
		2247	}
		2248
		2249	static int
		2250	slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
		2251	{
		2252	frame->prepare = 0;
		2253	coro_unwind_stacks (aTHX);
		2254
		2255	slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
		2256
		2257	return 1;
		2258	}
		2259
		2260	static int
		2261	safe_cancel (pTHX_ struct coro coro, SV *arg, int items)
		2262	{
		2263	if (coro->cctx)
		2264	croak ("coro inside C callback, unable to cancel at this time, caught");
		2265
		2266	if (coro->flags & CF_NEW)
		2267	{
		2268	coro_set_status (aTHX_ coro, arg, items);
		2269	coro_state_destroy (aTHX_ coro);
		2270	}
		2271	else
		2272	{
		2273	if (!coro->slf_frame.prepare)
		2274	croak ("coro outside an SLF function, unable to cancel at this time, caught");
		2275
		2276	slf_destroy (aTHX_ coro);
		2277
		2278	coro_set_status (aTHX_ coro, arg, items);
		2279	coro->slf_frame.prepare = prepare_nop;
		2280	coro->slf_frame.check = slf_check_safe_cancel;
		2281
		2282	api_ready (aTHX_ (SV *)coro->hv);
		2283	}
		2284
		2285	return 1;
1941	}	2286	}
1942		2287
1943	/*****************************************************************************/	2288	/*****************************************************************************/
1944	/* async pool handler */	2289	/* async pool handler */
1945		2290
…		…
1985	coro->saved_deffh = 0;	2330	coro->saved_deffh = 0;
1986		2331
1987	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)	2332	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2333	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989	{	2334	{
1990	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);	2335	slf_init_terminate_cancel_common (aTHX_ frame, hv);
1991	coro->invoke_av = newAV ();	2336	return;
1992
1993	frame->prepare = prepare_nop;
1994	}	2337	}
1995	else	2338	else
1996	{	2339	{
1997	av_clear (GvAV (PL_defgv));	2340	av_clear (GvAV (PL_defgv));
1998	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);	2341	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
…		…
2221	static void	2564	static void
2222	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)	2565	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
2223	{	2566	{
2224	frame->prepare = prepare_cede_notself;	2567	frame->prepare = prepare_cede_notself;
2225	frame->check = slf_check_nop;	2568	frame->check = slf_check_nop;
		2569	}
		2570
		2571	/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
		2572	static void
		2573	slf_destroy (pTHX_ struct coro *coro)
		2574	{
		2575	/* this callback is reserved for slf functions needing to do cleanup */
		2576	if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
		2577	coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
		2578
		2579	/*
		2580	* The on_destroy above most likely is from an SLF call.
		2581	* Since by definition the SLF call will not finish when we destroy
		2582	* the coro, we will have to force-finish it here, otherwise
		2583	* cleanup functions cannot call SLF functions.
		2584	*/
		2585	coro->slf_frame.prepare = 0;
2226	}	2586	}
2227		2587
2228	/*	2588	/*
2229	* these not obviously related functions are all rolled into one	2589	* these not obviously related functions are all rolled into one
2230	* function to increase chances that they all will call transfer with the same	2590	* function to increase chances that they all will call transfer with the same
…		…
2299	croak (0);	2659	croak (0);
2300	}	2660	}
2301		2661
2302	/* return value handling - mostly like entersub */	2662	/* return value handling - mostly like entersub */
2303	/* make sure we put something on the stack in scalar context */	2663	/* make sure we put something on the stack in scalar context */
2304	if (GIMME_V == G_SCALAR)	2664	if (GIMME_V == G_SCALAR
		2665	&& expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2305	{	2666	{
2306	dSP;	2667	dSP;
2307	SV **bot = PL_stack_base + checkmark;	2668	SV **bot = PL_stack_base + checkmark;
2308		2669
2309	if (sp == bot) /* too few, push undef */	2670	if (sp == bot) /* too few, push undef */
2310	bot [1] = &PL_sv_undef;	2671	bot [1] = &PL_sv_undef;
2311	else if (sp != bot + 1) /* too many, take last one */	2672	else /* too many, take last one */
2312	bot [1] = *sp;	2673	bot [1] = *sp;
2313		2674
2314	SP = bot + 1;	2675	SP = bot + 1;
2315		2676
2316	PUTBACK;	2677	PUTBACK;
…		…
2331	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]	2692	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332	&& PL_op->op_ppaddr != pp_slf)	2693	&& PL_op->op_ppaddr != pp_slf)
2333	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");	2694	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334		2695
2335	CvFLAGS (cv) \|= CVf_SLF;	2696	CvFLAGS (cv) \|= CVf_SLF;
2336	CvNODEBUG_on (cv);
2337	CvXSUBANY (cv).any_ptr = (void *)init_cb;	2697	CvXSUBANY (cv).any_ptr = (void *)init_cb;
2338	slf_cv = cv;	2698	slf_cv = cv;
2339		2699
2340	/* we patch the op, and then re-run the whole call */	2700	/* we patch the op, and then re-run the whole call */
2341	/* we have to put the same argument on the stack for this to work */	2701	/* we have to put the same argument on the stack for this to work */
…		…
2350	if (PL_op->op_flags & OPf_STACKED)	2710	if (PL_op->op_flags & OPf_STACKED)
2351	{	2711	{
2352	if (items > slf_arga)	2712	if (items > slf_arga)
2353	{	2713	{
2354	slf_arga = items;	2714	slf_arga = items;
2355	free (slf_argv);	2715	Safefree (slf_argv);
2356	slf_argv = malloc (slf_arga * sizeof (SV *));	2716	New (0, slf_argv, slf_arga, SV *);
2357	}	2717	}
2358		2718
2359	slf_argc = items;	2719	slf_argc = items;
2360		2720
2361	for (i = 0; i < items; ++i)	2721	for (i = 0; i < items; ++i)
…		…
2557	SvREFCNT_dec (cb);	2917	SvREFCNT_dec (cb);
2558	}	2918	}
2559	}	2919	}
2560		2920
2561	static void	2921	static void
2562	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2922	coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2563	{	2923	{
2564	/* call $sem->adjust (0) to possibly wake up some other waiters */	2924	/* call $sem->adjust (0) to possibly wake up some other waiters */
2565	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2925	coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2566	}	2926	}
2567		2927
2568	static int	2928	static int
2569	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)	2929	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2570	{	2930	{
2571	AV av = (AV )frame->data;	2931	AV av = (AV )frame->data;
2572	SV *count_sv = AvARRAY (av)[0];	2932	SV *count_sv = AvARRAY (av)[0];
		2933	SV *coro_hv = SvRV (coro_current);
2573		2934
2574	/* if we are about to throw, don't actually acquire the lock, just throw */	2935	/* if we are about to throw, don't actually acquire the lock, just throw */
2575	if (CORO_THROW)	2936	if (CORO_THROW)
2576	return 0;	2937	return 0;
2577	else if (SvIVX (count_sv) > 0)	2938	else if (SvIVX (count_sv) > 0)
2578	{	2939	{
2579	SvSTATE_current->on_destroy = 0;	2940	frame->destroy = 0;
2580		2941
2581	if (acquire)	2942	if (acquire)
2582	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2943	SvIVX (count_sv) = SvIVX (count_sv) - 1;
2583	else	2944	else
2584	coro_semaphore_adjust (aTHX_ av, 0);	2945	coro_semaphore_adjust (aTHX_ av, 0);
…		…
2589	{	2950	{
2590	int i;	2951	int i;
2591	/* if we were woken up but can't down, we look through the whole */	2952	/* if we were woken up but can't down, we look through the whole */
2592	/* waiters list and only add us if we aren't in there already */	2953	/* waiters list and only add us if we aren't in there already */
2593	/* this avoids some degenerate memory usage cases */	2954	/* this avoids some degenerate memory usage cases */
2594		2955	for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2595	for (i = 1; i <= AvFILLp (av); ++i)
2596	if (AvARRAY (av)[i] == SvRV (coro_current))	2956	if (AvARRAY (av)[i] == coro_hv)
2597	return 1;	2957	return 1;
2598		2958
2599	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2959	av_push (av, SvREFCNT_inc (coro_hv));
2600	return 1;	2960	return 1;
2601	}	2961	}
2602	}	2962	}
2603		2963
2604	static int	2964	static int
…		…
2627	{	2987	{
2628	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2988	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2629		2989
2630	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));	2990	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
2631	frame->prepare = prepare_schedule;	2991	frame->prepare = prepare_schedule;
2632
2633	/* to avoid race conditions when a woken-up coro gets terminated */	2992	/* to avoid race conditions when a woken-up coro gets terminated */
2634	/* we arrange for a temporary on_destroy that calls adjust (0) */	2993	/* we arrange for a temporary on_destroy that calls adjust (0) */
2635	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2994	frame->destroy = coro_semaphore_destroy;
2636	}	2995	}
2637	}	2996	}
2638		2997
2639	static void	2998	static void
2640	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)	2999	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
…		…
2722	{	3081	{
2723	SV *cb_cv = s_get_cv_croak (arg [1]);	3082	SV *cb_cv = s_get_cv_croak (arg [1]);
2724	av_push (av, SvREFCNT_inc_NN (cb_cv));	3083	av_push (av, SvREFCNT_inc_NN (cb_cv));
2725		3084
2726	if (SvIVX (AvARRAY (av)[0]))	3085	if (SvIVX (AvARRAY (av)[0]))
2727	coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */	3086	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2728		3087
2729	frame->prepare = prepare_nop;	3088	frame->prepare = prepare_nop;
2730	frame->check = slf_check_nop;	3089	frame->check = slf_check_nop;
2731	}	3090	}
2732	else if (SvIVX (AvARRAY (av)[0]))	3091	else if (SvIVX (AvARRAY (av)[0]))
…		…
2894	/* now call the AIO function - we assume our request is uncancelable */	3253	/* now call the AIO function - we assume our request is uncancelable */
2895	PUTBACK;	3254	PUTBACK;
2896	call_sv ((SV *)req, G_VOID \| G_DISCARD);	3255	call_sv ((SV *)req, G_VOID \| G_DISCARD);
2897	}	3256	}
2898		3257
2899	/* now that the requets is going, we loop toll we have a result */	3258	/* now that the request is going, we loop till we have a result */
2900	frame->data = (void *)state;	3259	frame->data = (void *)state;
2901	frame->prepare = prepare_schedule;	3260	frame->prepare = prepare_schedule;
2902	frame->check = slf_check_aio_req;	3261	frame->check = slf_check_aio_req;
2903	}	3262	}
2904		3263
…		…
3035	coroapi.prepare_nop = prepare_nop;	3394	coroapi.prepare_nop = prepare_nop;
3036	coroapi.prepare_schedule = prepare_schedule;	3395	coroapi.prepare_schedule = prepare_schedule;
3037	coroapi.prepare_cede = prepare_cede;	3396	coroapi.prepare_cede = prepare_cede;
3038	coroapi.prepare_cede_notself = prepare_cede_notself;	3397	coroapi.prepare_cede_notself = prepare_cede_notself;
3039		3398
3040	{	3399	time_init (aTHX);
3041	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3042
3043	if (!svp) croak ("Time::HiRes is required");
3044	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3045
3046	nvtime = INT2PTR (double ()(), SvIV (svp));
3047
3048	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3049	u2time = INT2PTR (void ()(pTHX_ UV ret[2]), SvIV (svp));
3050	}
3051		3400
3052	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));	3401	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3053	}	3402	}
3054		3403
3055	SV *	3404	SV *
…		…
3064	void	3413	void
3065	transfer (...)	3414	transfer (...)
3066	PROTOTYPE: $$	3415	PROTOTYPE: $$
3067	CODE:	3416	CODE:
3068	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3417	CORO_EXECUTE_SLF_XS (slf_init_transfer);
3069
3070	bool
3071	_destroy (SV *coro_sv)
3072	CODE:
3073	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3074	OUTPUT:
3075	RETVAL
3076		3418
3077	void	3419	void
3078	_exit (int code)	3420	_exit (int code)
3079	PROTOTYPE: $	3421	PROTOTYPE: $
3080	CODE:	3422	CODE:
…		…
3156	CODE:	3498	CODE:
3157	{	3499	{
3158	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))	3500	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))
3159	{	3501	{
3160	struct coro *current = SvSTATE_current;	3502	struct coro *current = SvSTATE_current;
		3503	struct CoroSLF slf_save;
3161		3504
3162	if (current != coro)	3505	if (current != coro)
3163	{	3506	{
3164	PUTBACK;	3507	PUTBACK;
3165	save_perl (aTHX_ current);	3508	save_perl (aTHX_ current);
3166	load_perl (aTHX_ coro);	3509	load_perl (aTHX_ coro);
		3510	/* the coro is most likely in an active SLF call.
		3511	* while not strictly required (the code we execute is
		3512	* not allowed to call any SLF functions), it's cleaner
		3513	* to reinitialise the slf_frame and restore it later.
		3514	* This might one day allow us to actually do SLF calls
		3515	* from code executed here.
		3516	*/
		3517	slf_save = slf_frame;
		3518	slf_frame.prepare = 0;
3167	SPAGAIN;	3519	SPAGAIN;
3168	}	3520	}
3169		3521
3170	PUSHSTACK;	3522	PUSHSTACK;
3171		3523
…		…
3181	SPAGAIN;	3533	SPAGAIN;
3182		3534
3183	if (current != coro)	3535	if (current != coro)
3184	{	3536	{
3185	PUTBACK;	3537	PUTBACK;
		3538	slf_frame = slf_save;
3186	save_perl (aTHX_ coro);	3539	save_perl (aTHX_ coro);
3187	load_perl (aTHX_ current);	3540	load_perl (aTHX_ current);
3188	SPAGAIN;	3541	SPAGAIN;
3189	}	3542	}
3190	}	3543	}
…		…
3195	PROTOTYPE: $	3548	PROTOTYPE: $
3196	ALIAS:	3549	ALIAS:
3197	is_ready = CF_READY	3550	is_ready = CF_READY
3198	is_running = CF_RUNNING	3551	is_running = CF_RUNNING
3199	is_new = CF_NEW	3552	is_new = CF_NEW
3200	is_destroyed = CF_DESTROYED	3553	is_destroyed = CF_ZOMBIE
		3554	is_zombie = CF_ZOMBIE
3201	is_suspended = CF_SUSPENDED	3555	is_suspended = CF_SUSPENDED
3202	CODE:	3556	CODE:
3203	RETVAL = boolSV (coro->flags & ix);	3557	RETVAL = boolSV (coro->flags & ix);
3204	OUTPUT:	3558	OUTPUT:
3205	RETVAL	3559	RETVAL
3206		3560
3207	void	3561	void
3208	throw (Coro::State self, SV *throw = &PL_sv_undef)	3562	throw (Coro::State self, SV *exception = &PL_sv_undef)
3209	PROTOTYPE: $;$	3563	PROTOTYPE: $;$
3210	CODE:	3564	CODE:
3211	{	3565	{
3212	struct coro *current = SvSTATE_current;	3566	struct coro *current = SvSTATE_current;
3213	SV **throwp = self == current ? &CORO_THROW : &self->except;	3567	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3214	SvREFCNT_dec (*throwp);	3568	SvREFCNT_dec (*exceptionp);
3215	SvGETMAGIC (throw);	3569	SvGETMAGIC (exception);
3216	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3570	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3217	}	3571	}
3218		3572
3219	void	3573	void
3220	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	3574	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
3221	PROTOTYPE: $;$	3575	PROTOTYPE: $;$
…		…
3276		3630
3277	void	3631	void
3278	cancel (Coro::State self)	3632	cancel (Coro::State self)
3279	CODE:	3633	CODE:
3280	coro_state_destroy (aTHX_ self);	3634	coro_state_destroy (aTHX_ self);
3281	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3282
3283		3635
3284	SV *	3636	SV *
3285	enable_times (int enabled = enable_times)	3637	enable_times (int enabled = enable_times)
3286	CODE:	3638	CODE:
3287	{	3639	{
…		…
3316		3668
3317	if (expect_false (current == self))	3669	if (expect_false (current == self))
3318	coro_times_sub (SvSTATE (coro_current));	3670	coro_times_sub (SvSTATE (coro_current));
3319	}	3671	}
3320		3672
		3673	void
		3674	swap_sv (Coro::State coro, SV sv, SV swapsv)
		3675	CODE:
		3676	{
		3677	struct coro *current = SvSTATE_current;
		3678
		3679	if (current == coro)
		3680	SWAP_SVS (current);
		3681
		3682	if (!coro->swap_sv)
		3683	coro->swap_sv = newAV ();
		3684
		3685	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3686	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3687
		3688	if (current == coro)
		3689	SWAP_SVS (current);
		3690	}
		3691
		3692
3321	MODULE = Coro::State PACKAGE = Coro	3693	MODULE = Coro::State PACKAGE = Coro
3322		3694
3323	BOOT:	3695	BOOT:
3324	{	3696	{
3325	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3697	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3326	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3698	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3327	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);	3699	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3328	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3329	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3700	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3330	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	3701	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3331	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);	3702	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3332	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);	3703	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3333	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3704	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
…		…
3372	api_ready (aTHX_ RETVAL);	3743	api_ready (aTHX_ RETVAL);
3373	OUTPUT:	3744	OUTPUT:
3374	RETVAL	3745	RETVAL
3375		3746
3376	void	3747	void
		3748	_destroy (Coro::State coro)
		3749	CODE:
		3750	/* used by the manager thread */
		3751	coro_state_destroy (aTHX_ coro);
		3752
		3753	void
		3754	on_destroy (Coro::State coro, SV *cb)
		3755	CODE:
		3756	coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
		3757
		3758	void
		3759	join (...)
		3760	CODE:
		3761	CORO_EXECUTE_SLF_XS (slf_init_join);
		3762
		3763	void
3377	terminate (...)	3764	terminate (...)
3378	CODE:	3765	CODE:
3379	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3766	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3767
		3768	void
		3769	cancel (...)
		3770	CODE:
		3771	CORO_EXECUTE_SLF_XS (slf_init_cancel);
		3772
		3773	int
		3774	safe_cancel (Coro::State self, ...)
		3775	C_ARGS: aTHX_ self, &ST (1), items - 1
3380		3776
3381	void	3777	void
3382	schedule (...)	3778	schedule (...)
3383	CODE:	3779	CODE:
3384	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3780	CORO_EXECUTE_SLF_XS (slf_init_schedule);
…		…
3781	{	4177	{
3782	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;	4178	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3783	coro_old_pp_sselect = 0;	4179	coro_old_pp_sselect = 0;
3784	}	4180	}
3785		4181
3786

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Comparing Coro/Coro/State.xs (file contents): Revision 1.372 by root, Thu Oct 1 23:50:23 2009 UTC vs. Revision 1.403 by root, Sun May 22 20:13:33 2011 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.372 by root, Thu Oct 1 23:50:23 2009 UTC vs.
Revision 1.403 by root, Sun May 22 20:13:33 2011 UTC