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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.154 by root, Fri Sep 21 01:08:06 2007 UTC vs.
Revision 1.196 by root, Sat Oct 6 01:11:01 2007 UTC

…		…
75	/* 5.8.7 */	75	/* 5.8.7 */
76	#ifndef SvRV_set	76	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	78	#endif
79		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81	# undef CORO_STACKGUARD	89	# undef CORO_STACKGUARD
82	#endif	90	#endif
83		91
84	#ifndef CORO_STACKGUARD	92	#ifndef CORO_STACKGUARD
…		…
88	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	99	#endif
92		100
93	/* The next macro should declare a variable stacklevel that contains and approximation	101	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	102	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
98		105
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		107
101	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		111	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	112	#else
105	# define attribute(x)	113	# define attribute(x)
106	# define BARRIER	114	# define BARRIER
		115	# define expect(expr,value) (expr)
107	#endif	116	#endif
		117
		118	#define expect_false(expr) expect ((expr) != 0, 0)
		119	#define expect_true(expr) expect ((expr) != 0, 1)
108		120
109	#define NOINLINE attribute ((noinline))	121	#define NOINLINE attribute ((noinline))
110		122
111	#include "CoroAPI.h"	123	#include "CoroAPI.h"
112		124
…		…
133	static AV main_mainstack; / used to differentiate between $main and others */	145	static AV main_mainstack; / used to differentiate between $main and others */
134	static JMPENV *main_top_env;	146	static JMPENV *main_top_env;
135	static HV coro_state_stash, coro_stash;	147	static HV coro_state_stash, coro_stash;
136	static SV coro_mortal; / will be freed after next transfer */	148	static SV coro_mortal; / will be freed after next transfer */
137		149
		150	static GV irsgv; / $/ */
		151	static GV stdoutgv; / STDOUT /
		152
		153	/* async_pool helper stuff */
		154	static SV *sv_pool_rss;
		155	static SV *sv_pool_size;
		156	static AV *av_async_pool;
		157
138	static struct coro_cctx *cctx_first;	158	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	159	static int cctx_count, cctx_idle;
		160
		161	enum {
		162	CC_MAPPED = 0x01,
		163	CC_NOREUSE = 0x02, /* throw this away after tracing */
		164	CC_TRACE = 0x04,
		165	CC_TRACE_SUB = 0x08, /* trace sub calls */
		166	CC_TRACE_LINE = 0x10, /* trace each statement */
		167	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		168	};
140		169
141	/* this is a structure representing a c-level coroutine */	170	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	171	typedef struct coro_cctx {
143	struct coro_cctx *next;	172	struct coro_cctx *next;
144		173
…		…
153	coro_context cctx;	182	coro_context cctx;
154		183
155	#if CORO_USE_VALGRIND	184	#if CORO_USE_VALGRIND
156	int valgrind_id;	185	int valgrind_id;
157	#endif	186	#endif
158	char inuse, mapped;	187	unsigned char flags;
159	} coro_cctx;	188	} coro_cctx;
160		189
161	enum {	190	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	191	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	192	CF_READY = 0x0002, /* coroutine is ready */
…		…
171	coro_cctx *cctx;	200	coro_cctx *cctx;
172		201
173	/* data associated with this coroutine (initial args) */	202	/* data associated with this coroutine (initial args) */
174	AV *args;	203	AV *args;
175	int refcnt;	204	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	205	int flags; /* CF_ flags */
178		206
179	/* optionally saved, might be zero */	207	/* optionally saved, might be zero */
180	AV defav; / @_ */	208	AV defav; / @_ */
181	SV defsv; / $_ */	209	SV defsv; / $_ */
182	SV errsv; / $@ */	210	SV errsv; / $@ */
183	GV deffh; / default filehandle */	211	SV deffh; / default filehandle */
184	SV irssv; / $/ */	212	SV irssv; / $/ */
185	SV irssv_sv; / real $/ cache */	213	SV irssv_sv; / real $/ cache */
186		214
187	#define VAR(name,type) type name;	215	#define VAR(name,type) type name;
188	# include "state.h"	216	# include "state.h"
189	#undef VAR	217	#undef VAR
190		218
		219	/* statistics */
		220	int usecount; /* number of transfers to this coro */
		221
191	/* coro process data */	222	/* coro process data */
192	int prio;	223	int prio;
		224	SV *throw;
		225
		226	/* async_pool */
		227	SV *saved_deffh;
193		228
194	/* linked list */	229	/* linked list */
195	struct coro next, prev;	230	struct coro next, prev;
196	HV hv; / the perl hash associated with this coro, if any */	231	HV hv; / the perl hash associated with this coro, if any */
197	};	232	};
…		…
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	321	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287	? SvMAGIC (cv) \	322	? SvMAGIC (cv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	323	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
289	: 0	324	: 0
290		325
		326	static struct coro *
		327	SvSTATE_ (pTHX_ SV *coro)
		328	{
		329	HV *stash;
		330	MAGIC *mg;
		331
		332	if (SvROK (coro))
		333	coro = SvRV (coro);
		334
		335	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		336	croak ("Coro::State object required");
		337
		338	stash = SvSTASH (coro);
		339	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		340	{
		341	/* very slow, but rare, check */
		342	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		343	croak ("Coro::State object required");
		344	}
		345
		346	mg = CORO_MAGIC (coro);
		347	return (struct coro *)mg->mg_ptr;
		348	}
		349
		350	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		351
291	/* the next two functions merely cache the padlists */	352	/* the next two functions merely cache the padlists */
292	static void	353	static void
293	get_padlist (pTHX_ CV *cv)	354	get_padlist (pTHX_ CV *cv)
294	{	355	{
295	MAGIC *mg = CORO_MAGIC (cv);	356	MAGIC *mg = CORO_MAGIC (cv);
296	AV *av;	357	AV *av;
297		358
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	359	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	360	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	361	else
301	{	362	{
302	#if CORO_PREFER_PERL_FUNCTIONS	363	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	364	/* this is probably cleaner, but also slower? */
…		…
315	put_padlist (pTHX_ CV *cv)	376	put_padlist (pTHX_ CV *cv)
316	{	377	{
317	MAGIC *mg = CORO_MAGIC (cv);	378	MAGIC *mg = CORO_MAGIC (cv);
318	AV *av;	379	AV *av;
319		380
320	if (!mg)	381	if (expect_false (!mg))
321	{	382	{
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	383	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	384	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;	385	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();	386	mg->mg_obj = (SV *)newAV ();
326	}	387	}
327		388
328	av = (AV *)mg->mg_obj;	389	av = (AV *)mg->mg_obj;
329		390
330	if (AvFILLp (av) >= AvMAX (av))	391	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	392	av_extend (av, AvMAX (av) + 1);
332		393
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	394	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	395	}
335		396
336	/ load & save, init *****************************************************/	397	/ load & save, init *****************************************************/
337
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342		398
343	static void	399	static void
344	load_perl (pTHX_ Coro__State c)	400	load_perl (pTHX_ Coro__State c)
345	{	401	{
346	#define VAR(name,type) PL_ ## name = c->name;	402	#define VAR(name,type) PL_ ## name = c->name;
347	# include "state.h"	403	# include "state.h"
348	#undef VAR	404	#undef VAR
349		405
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	406	GvSV (PL_defgv) = c->defsv;
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	407	GvAV (PL_defgv) = c->defav;
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	408	GvSV (PL_errgv) = c->errsv;
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);	409	GvSV (irsgv) = c->irssv_sv;
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		410
370	{	411	{
371	dSP;	412	dSP;
372	CV *cv;	413	CV *cv;
373		414
374	/* now do the ugly restore mess */	415	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	416	while (expect_true (cv = (CV *)POPs))
376	{	417	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	418	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	419	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	420	CvPADLIST (cv) = (AV *)POPs;
380	}	421	}
…		…
395	/*	436	/*
396	* the worst thing you can imagine happens first - we have to save	437	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	438	* (and reinitialize) all cv's in the whole callchain :(
398	*/	439	*/
399		440
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	441	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	442	/* this loop was inspired by pp_caller */
403	for (;;)	443	for (;;)
404	{	444	{
405	while (cxix >= 0)	445	while (expect_true (cxix >= 0))
406	{	446	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	447	PERL_CONTEXT *cx = &ccstk[cxix--];
408		448
409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	449	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
410	{	450	{
411	CV *cv = cx->blk_sub.cv;	451	CV *cv = cx->blk_sub.cv;
412		452
413	if (CvDEPTH (cv))	453	if (expect_true (CvDEPTH (cv)))
414	{	454	{
415	EXTEND (SP, 3);	455	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	456	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	457	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	458	PUSHs ((SV *)cv);
…		…
421	get_padlist (aTHX_ cv);	461	get_padlist (aTHX_ cv);
422	}	462	}
423	}	463	}
424	}	464	}
425		465
426	if (top_si->si_type == PERLSI_MAIN)	466	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	467	break;
428		468
429	top_si = top_si->si_prev;	469	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	470	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	471	cxix = top_si->si_cxix;
432	}	472	}
433		473
434	PUTBACK;	474	PUTBACK;
435	}	475	}
436		476
437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	477	c->defav = GvAV (PL_defgv);
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	478	c->defsv = DEFSV;
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	479	c->errsv = ERRSV;
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	480	c->irssv_sv = GvSV (irsgv);
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
442		481
443	#define VAR(name,type)c->name = PL_ ## name;	482	#define VAR(name,type)c->name = PL_ ## name;
444	# include "state.h"	483	# include "state.h"
445	#undef VAR	484	#undef VAR
446	}	485	}
…		…
455	# define coro_init_stacks init_stacks	494	# define coro_init_stacks init_stacks
456	#else	495	#else
457	static void	496	static void
458	coro_init_stacks (pTHX)	497	coro_init_stacks (pTHX)
459	{	498	{
460	PL_curstackinfo = new_stackinfo(64, 4);	499	PL_curstackinfo = new_stackinfo(64, 6);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		503
465	PL_stack_base = AvARRAY(PL_curstack);	504	PL_stack_base = AvARRAY(PL_curstack);
…		…
481		520
482	New(54,PL_scopestack,16,I32);	521	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	523	PL_scopestack_max = 16;
485		524
486	New(54,PL_savestack,32,ANY);	525	New(54,PL_savestack,64,ANY);
487	PL_savestack_ix = 0;	526	PL_savestack_ix = 0;
488	PL_savestack_max = 32;	527	PL_savestack_max = 64;
489		528
490	#if !PERL_VERSION_ATLEAST (5,9,0)	529	#if !PERL_VERSION_ATLEAST (5,9,0)
491	New(54,PL_retstack,8,OP*);	530	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	531	PL_retstack_ix = 0;
493	PL_retstack_max = 8;	532	PL_retstack_max = 4;
494	#endif	533	#endif
495	}	534	}
496	#endif	535	#endif
497		536
498	/*	537	/*
499	* destroy the stacks, the callchain etc...	538	* destroy the stacks, the callchain etc...
500	*/	539	*/
501	static void	540	static void
502	coro_destroy_stacks (pTHX)	541	coro_destroy_stacks (pTHX)
503	{	542	{
504	if (!IN_DESTRUCT)
505	{
506	/* restore all saved variables and stuff */
507	LEAVE_SCOPE (0);
508	assert (PL_tmps_floor == -1);
509
510	/* free all temporaries */
511	FREETMPS;
512	assert (PL_tmps_ix == -1);
513
514	/* unwind all extra stacks */
515	POPSTACK_TO (PL_mainstack);
516
517	/* unwind main stack */
518	dounwind (-1);
519	}
520
521	while (PL_curstackinfo->si_next)	543	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	544	PL_curstackinfo = PL_curstackinfo->si_next;
523		545
524	while (PL_curstackinfo)	546	while (PL_curstackinfo)
525	{	547	{
…		…
541	Safefree (PL_retstack);	563	Safefree (PL_retstack);
542	#endif	564	#endif
543	}	565	}
544		566
545	static size_t	567	static size_t
546	coro_rss (struct coro *coro)	568	coro_rss (pTHX_ struct coro *coro)
547	{	569	{
548	size_t rss = sizeof (coro);	570	size_t rss = sizeof (*coro);
549		571
550	if (coro->mainstack)	572	if (coro->mainstack)
551	{	573	{
552	if (coro->flags & CF_RUNNING)	574	if (coro->flags & CF_RUNNING)
553	{	575	{
…		…
555	# include "state.h"	577	# include "state.h"
556	#undef VAR	578	#undef VAR
557	}	579	}
558		580
559	rss += sizeof (coro->curstackinfo);	581	rss += sizeof (coro->curstackinfo);
560	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);	582	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
561	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	583	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
562	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	584	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
563	rss += coro->tmps_max * sizeof (SV *);	585	rss += coro->tmps_max * sizeof (SV *);
564	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	586	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
565	rss += coro->scopestack_max * sizeof (I32);	587	rss += coro->scopestack_max * sizeof (I32);
566	rss += coro->savestack_max * sizeof (ANY);	588	rss += coro->savestack_max * sizeof (ANY);
567		589
…		…
574	}	596	}
575		597
576	/ coroutine stack handling **********************************************/	598	/ coroutine stack handling **********************************************/
577		599
578	static void	600	static void
579	setup_coro (pTHX_ struct coro *coro)	601	coro_setup (pTHX_ struct coro *coro)
580	{	602	{
581	/*	603	/*
582	* emulate part of the perl startup here.	604	* emulate part of the perl startup here.
583	*/	605	*/
584	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
585		607
		608	PL_runops = RUNOPS_DEFAULT;
586	PL_curcop = &PL_compiling;	609	PL_curcop = &PL_compiling;
587	PL_in_eval = EVAL_NULL;	610	PL_in_eval = EVAL_NULL;
588	PL_comppad = 0;	611	PL_comppad = 0;
589	PL_curpm = 0;	612	PL_curpm = 0;
		613	PL_curpad = 0;
590	PL_localizing = 0;	614	PL_localizing = 0;
591	PL_dirty = 0;	615	PL_dirty = 0;
592	PL_restartop = 0;	616	PL_restartop = 0;
		617
		618	GvSV (PL_defgv) = newSV (0);
		619	GvAV (PL_defgv) = coro->args; coro->args = 0;
		620	GvSV (PL_errgv) = newSV (0);
		621	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		622	PL_rs = newSVsv (GvSV (irsgv));
		623	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
593		624
594	{	625	{
595	dSP;	626	dSP;
596	LOGOP myop;	627	LOGOP myop;
597		628
598	SvREFCNT_dec (GvAV (PL_defgv));
599	GvAV (PL_defgv) = coro->args; coro->args = 0;
600
601	Zero (&myop, 1, LOGOP);	629	Zero (&myop, 1, LOGOP);
602	myop.op_next = Nullop;	630	myop.op_next = Nullop;
603	myop.op_flags = OPf_WANT_VOID;	631	myop.op_flags = OPf_WANT_VOID;
604		632
605	PUSHMARK (SP);	633	PUSHMARK (SP);
606	XPUSHs (av_shift (GvAV (PL_defgv)));	634	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
607	PUTBACK;	635	PUTBACK;
608	PL_op = (OP *)&myop;	636	PL_op = (OP *)&myop;
609	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	637	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
610	SPAGAIN;	638	SPAGAIN;
611	}	639	}
612		640
613	ENTER; /* necessary e.g. for dounwind */	641	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		642	}
		643
		644	static void
		645	coro_destroy (pTHX_ struct coro *coro)
		646	{
		647	if (!IN_DESTRUCT)
		648	{
		649	/* restore all saved variables and stuff */
		650	LEAVE_SCOPE (0);
		651	assert (PL_tmps_floor == -1);
		652
		653	/* free all temporaries */
		654	FREETMPS;
		655	assert (PL_tmps_ix == -1);
		656
		657	/* unwind all extra stacks */
		658	POPSTACK_TO (PL_mainstack);
		659
		660	/* unwind main stack */
		661	dounwind (-1);
		662	}
		663
		664	SvREFCNT_dec (GvSV (PL_defgv));
		665	SvREFCNT_dec (GvAV (PL_defgv));
		666	SvREFCNT_dec (GvSV (PL_errgv));
		667	SvREFCNT_dec (PL_defoutgv);
		668	SvREFCNT_dec (PL_rs);
		669	SvREFCNT_dec (GvSV (irsgv));
		670
		671	SvREFCNT_dec (coro->saved_deffh);
		672	SvREFCNT_dec (coro->throw);
		673
		674	coro_destroy_stacks (aTHX);
614	}	675	}
615		676
616	static void	677	static void
617	free_coro_mortal (pTHX)	678	free_coro_mortal (pTHX)
618	{	679	{
619	if (coro_mortal)	680	if (expect_true (coro_mortal))
620	{	681	{
621	SvREFCNT_dec (coro_mortal);	682	SvREFCNT_dec (coro_mortal);
622	coro_mortal = 0;	683	coro_mortal = 0;
623	}	684	}
		685	}
		686
		687	static int
		688	runops_trace (pTHX)
		689	{
		690	COP *oldcop = 0;
		691	int oldcxix = -2;
		692	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		693	coro_cctx *cctx = coro->cctx;
		694
		695	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		696	{
		697	PERL_ASYNC_CHECK ();
		698
		699	if (cctx->flags & CC_TRACE_ALL)
		700	{
		701	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		702	{
		703	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		704	SV bot, top;
		705	AV av = newAV (); / return values */
		706	SV **cb;
		707	dSP;
		708
		709	GV *gv = CvGV (cx->blk_sub.cv);
		710	SV *fullname = sv_2mortal (newSV (0));
		711	if (isGV (gv))
		712	gv_efullname3 (fullname, gv, 0);
		713
		714	bot = PL_stack_base + cx->blk_oldsp + 1;
		715	top = cx->blk_gimme == G_ARRAY ? SP + 1
		716	: cx->blk_gimme == G_SCALAR ? bot + 1
		717	: bot;
		718
		719	av_extend (av, top - bot);
		720	while (bot < top)
		721	av_push (av, SvREFCNT_inc (*bot++));
		722
		723	PL_runops = RUNOPS_DEFAULT;
		724	ENTER;
		725	SAVETMPS;
		726	EXTEND (SP, 3);
		727	PUSHMARK (SP);
		728	PUSHs (&PL_sv_no);
		729	PUSHs (fullname);
		730	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		731	PUTBACK;
		732	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		733	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		734	SPAGAIN;
		735	FREETMPS;
		736	LEAVE;
		737	PL_runops = runops_trace;
		738	}
		739
		740	if (oldcop != PL_curcop)
		741	{
		742	oldcop = PL_curcop;
		743
		744	if (PL_curcop != &PL_compiling)
		745	{
		746	SV **cb;
		747
		748	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		749	{
		750	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		751
		752	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		753	{
		754	runops_proc_t old_runops = PL_runops;
		755	dSP;
		756	GV *gv = CvGV (cx->blk_sub.cv);
		757	SV *fullname = sv_2mortal (newSV (0));
		758
		759	if (isGV (gv))
		760	gv_efullname3 (fullname, gv, 0);
		761
		762	PL_runops = RUNOPS_DEFAULT;
		763	ENTER;
		764	SAVETMPS;
		765	EXTEND (SP, 3);
		766	PUSHMARK (SP);
		767	PUSHs (&PL_sv_yes);
		768	PUSHs (fullname);
		769	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		770	PUTBACK;
		771	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		772	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		773	SPAGAIN;
		774	FREETMPS;
		775	LEAVE;
		776	PL_runops = runops_trace;
		777	}
		778
		779	oldcxix = cxstack_ix;
		780	}
		781
		782	if (cctx->flags & CC_TRACE_LINE)
		783	{
		784	dSP;
		785
		786	PL_runops = RUNOPS_DEFAULT;
		787	ENTER;
		788	SAVETMPS;
		789	EXTEND (SP, 3);
		790	PL_runops = RUNOPS_DEFAULT;
		791	PUSHMARK (SP);
		792	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		793	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		794	PUTBACK;
		795	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		796	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		797	SPAGAIN;
		798	FREETMPS;
		799	LEAVE;
		800	PL_runops = runops_trace;
		801	}
		802	}
		803	}
		804	}
		805	}
		806
		807	TAINT_NOT;
		808	return 0;
624	}	809	}
625		810
626	/* inject a fake call to Coro::State::_cctx_init into the execution */	811	/* inject a fake call to Coro::State::_cctx_init into the execution */
627	/* _cctx_init should be careful, as it could be called at almost any time */	812	/* _cctx_init should be careful, as it could be called at almost any time */
628	/* during execution of a perl program */	813	/* during execution of a perl program */
629	static void NOINLINE	814	static void NOINLINE
630	prepare_cctx (pTHX_ coro_cctx *cctx)	815	prepare_cctx (pTHX_ coro_cctx *cctx)
631	{	816	{
632	dSP;	817	dSP;
633	LOGOP myop;	818	LOGOP myop;
		819
		820	PL_top_env = &PL_start_env;
		821
		822	if (cctx->flags & CC_TRACE)
		823	PL_runops = runops_trace;
634		824
635	Zero (&myop, 1, LOGOP);	825	Zero (&myop, 1, LOGOP);
636	myop.op_next = PL_op;	826	myop.op_next = PL_op;
637	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	827	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
638		828
…		…
655	dTHX;	845	dTHX;
656		846
657	/* coro_run is the alternative tail of transfer(), so unlock here. */	847	/* coro_run is the alternative tail of transfer(), so unlock here. */
658	UNLOCK;	848	UNLOCK;
659		849
660	PL_top_env = &PL_start_env;	850	/* we now skip the entersub that lead to transfer() */
		851	PL_op = PL_op->op_next;
661		852
662	/* inject a fake subroutine call to cctx_init */	853	/* inject a fake subroutine call to cctx_init */
663	prepare_cctx (aTHX_ (coro_cctx *)arg);	854	prepare_cctx (aTHX_ (coro_cctx *)arg);
664		855
665	/* somebody or something will hit me for both perl_run and PL_restartop */	856	/* somebody or something will hit me for both perl_run and PL_restartop */
…		…
699	# if CORO_STACKGUARD	890	# if CORO_STACKGUARD
700	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	891	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
701	# endif	892	# endif
702	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	893	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
703	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	894	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
704	cctx->mapped = 1;	895	cctx->flags \|= CC_MAPPED;
705	}	896	}
706	else	897	else
707	#endif	898	#endif
708	{	899	{
709	cctx->ssize = coro_stacksize * (long)sizeof (long);	900	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
736	#if CORO_USE_VALGRIND	927	#if CORO_USE_VALGRIND
737	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	928	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
738	#endif	929	#endif
739		930
740	#if HAVE_MMAP	931	#if HAVE_MMAP
741	if (cctx->mapped)	932	if (cctx->flags & CC_MAPPED)
742	munmap (cctx->sptr, cctx->ssize);	933	munmap (cctx->sptr, cctx->ssize);
743	else	934	else
744	#endif	935	#endif
745	Safefree (cctx->sptr);	936	Safefree (cctx->sptr);
746		937
747	Safefree (cctx);	938	Safefree (cctx);
748	}	939	}
749		940
		941	/* wether this cctx should be destructed */
		942	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		943
750	static coro_cctx *	944	static coro_cctx *
751	cctx_get (pTHX)	945	cctx_get (pTHX)
752	{	946	{
753	while (cctx_first)	947	while (expect_true (cctx_first))
754	{	948	{
755	coro_cctx *cctx = cctx_first;	949	coro_cctx *cctx = cctx_first;
756	cctx_first = cctx->next;	950	cctx_first = cctx->next;
757	--cctx_idle;	951	--cctx_idle;
758		952
759	if (cctx->ssize >= coro_stacksize)	953	if (expect_true (!CCTX_EXPIRED (cctx)))
760	return cctx;	954	return cctx;
761		955
762	cctx_destroy (cctx);	956	cctx_destroy (cctx);
763	}	957	}
764		958
765	PL_op = PL_op->op_next;
766	return cctx_new ();	959	return cctx_new ();
767	}	960	}
768		961
769	static void	962	static void
770	cctx_put (coro_cctx *cctx)	963	cctx_put (coro_cctx *cctx)
771	{	964	{
772	/* free another cctx if overlimit */	965	/* free another cctx if overlimit */
773	if (cctx_idle >= MAX_IDLE_CCTX)	966	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
774	{	967	{
775	coro_cctx *first = cctx_first;	968	coro_cctx *first = cctx_first;
776	cctx_first = first->next;	969	cctx_first = first->next;
777	--cctx_idle;	970	--cctx_idle;
778		971
779	assert (!first->inuse);
780	cctx_destroy (first);	972	cctx_destroy (first);
781	}	973	}
782		974
783	++cctx_idle;	975	++cctx_idle;
784	cctx->next = cctx_first;	976	cctx->next = cctx_first;
785	cctx_first = cctx;	977	cctx_first = cctx;
786	}	978	}
787		979
788	/ coroutine switching ***************************************************/	980	/ coroutine switching ***************************************************/
789		981
790	/* never call directly, always through the coro_state_transfer global variable */	982	static void
		983	transfer_check (pTHX_ struct coro prev, struct coro next)
		984	{
		985	if (expect_true (prev != next))
		986	{
		987	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		988	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		989
		990	if (expect_false (next->flags & CF_RUNNING))
		991	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		992
		993	if (expect_false (next->flags & CF_DESTROYED))
		994	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		995
		996	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		997	croak ("Coro::State::transfer called while parsing, but this is not supported");
		998	}
		999	}
		1000
		1001	/* always use the TRANSFER macro */
791	static void NOINLINE	1002	static void NOINLINE
792	transfer (pTHX_ struct coro prev, struct coro next)	1003	transfer (pTHX_ struct coro prev, struct coro next)
793	{	1004	{
794	dSTACKLEVEL;	1005	dSTACKLEVEL;
795		1006
796	/* sometimes transfer is only called to set idle_sp */	1007	/* sometimes transfer is only called to set idle_sp */
797	if (!next)	1008	if (expect_false (!next))
798	{	1009	{
799	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1010	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
800	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1011	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
801	}	1012	}
802	else if (prev != next)	1013	else if (expect_true (prev != next))
803	{	1014	{
804	coro_cctx *prev__cctx;	1015	coro_cctx *prev__cctx;
805		1016
806	if (prev->flags & CF_NEW)	1017	if (expect_false (prev->flags & CF_NEW))
807	{	1018	{
808	/* create a new empty context */	1019	/* create a new empty context */
809	Newz (0, prev->cctx, 1, coro_cctx);	1020	Newz (0, prev->cctx, 1, coro_cctx);
810	prev->cctx->inuse = 1;
811	prev->flags &= ~CF_NEW;	1021	prev->flags &= ~CF_NEW;
812	prev->flags \|= CF_RUNNING;	1022	prev->flags \|= CF_RUNNING;
813	}	1023	}
814		1024
815	/TODO: must not croak here /
816	if (!prev->flags & CF_RUNNING)
817	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
818
819	if (next->flags & CF_RUNNING)
820	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
821
822	if (next->flags & CF_DESTROYED)
823	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
824
825	prev->flags &= ~CF_RUNNING;	1025	prev->flags &= ~CF_RUNNING;
826	next->flags \|= CF_RUNNING;	1026	next->flags \|= CF_RUNNING;
827		1027
828	LOCK;	1028	LOCK;
829		1029
830	if (next->flags & CF_NEW)	1030	if (expect_false (next->flags & CF_NEW))
831	{	1031	{
832	/* need to start coroutine */	1032	/* need to start coroutine */
833	next->flags &= ~CF_NEW;	1033	next->flags &= ~CF_NEW;
834	/* first get rid of the old state */	1034	/* first get rid of the old state */
835	save_perl (aTHX_ prev);	1035	save_perl (aTHX_ prev);
836	/* setup coroutine call */	1036	/* setup coroutine call */
837	setup_coro (aTHX_ next);	1037	coro_setup (aTHX_ next);
838	/* need a new stack */
839	assert (!next->cctx);
840	}	1038	}
841	else	1039	else
842	{	1040	{
843	/* coroutine already started */	1041	/* coroutine already started */
844	save_perl (aTHX_ prev);	1042	save_perl (aTHX_ prev);
…		…
846	}	1044	}
847		1045
848	prev__cctx = prev->cctx;	1046	prev__cctx = prev->cctx;
849		1047
850	/* possibly "free" the cctx */	1048	/* possibly "free" the cctx */
851	if (prev__cctx->idle_sp == STACKLEVEL)	1049	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
852	{	1050	{
853	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1051	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
854	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1052	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
855		1053
856	prev->cctx = 0;	1054	prev->cctx = 0;
857		1055
		1056	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1057	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1058	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1059	next->cctx = cctx_get (aTHX);
		1060
858	cctx_put (prev__cctx);	1061	cctx_put (prev__cctx);
859	prev__cctx->inuse = 0;
860	}	1062	}
861		1063
		1064	++next->usecount;
		1065
862	if (!next->cctx)	1066	if (expect_true (!next->cctx))
863	{
864	next->cctx = cctx_get (aTHX);	1067	next->cctx = cctx_get (aTHX);
865	assert (!next->cctx->inuse);
866	next->cctx->inuse = 1;
867	}
868		1068
869	if (prev__cctx != next->cctx)	1069	if (expect_false (prev__cctx != next->cctx))
870	{	1070	{
871	prev__cctx->top_env = PL_top_env;	1071	prev__cctx->top_env = PL_top_env;
872	PL_top_env = next->cctx->top_env;	1072	PL_top_env = next->cctx->top_env;
873	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1073	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
874	}	1074	}
875		1075
876	free_coro_mortal (aTHX);	1076	free_coro_mortal (aTHX);
877	UNLOCK;	1077	UNLOCK;
		1078
		1079	if (expect_false (prev->throw \|\| next->throw))
		1080	{
		1081	struct coro *coro = SvSTATE (coro_current);
		1082
		1083	if (coro->throw)
		1084	{
		1085	SV *exception = coro->throw;
		1086	coro->throw = 0;
		1087	sv_setsv (ERRSV, exception);
		1088	croak (0);
		1089	}
		1090	}
878	}	1091	}
879	}	1092	}
880		1093
881	struct transfer_args	1094	struct transfer_args
882	{	1095	{
883	struct coro prev, next;	1096	struct coro prev, next;
884	};	1097	};
885		1098
886	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1099	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1100	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
887		1101
888	/ high level stuff ******************************************************/	1102	/ high level stuff ******************************************************/
889		1103
890	static int	1104	static int
891	coro_state_destroy (pTHX_ struct coro *coro)	1105	coro_state_destroy (pTHX_ struct coro *coro)
…		…
908		1122
909	if (coro->mainstack && coro->mainstack != main_mainstack)	1123	if (coro->mainstack && coro->mainstack != main_mainstack)
910	{	1124	{
911	struct coro temp;	1125	struct coro temp;
912		1126
913	assert (!(coro->flags & CF_RUNNING));
914
915	Zero (&temp, 1, struct coro);
916	temp.save = CORO_SAVE_ALL;
917
918	if (coro->flags & CF_RUNNING)	1127	if (coro->flags & CF_RUNNING)
919	croak ("FATAL: tried to destroy currently running coroutine");	1128	croak ("FATAL: tried to destroy currently running coroutine");
920		1129
921	save_perl (aTHX_ &temp);	1130	save_perl (aTHX_ &temp);
922	load_perl (aTHX_ coro);	1131	load_perl (aTHX_ coro);
923		1132
924	coro_destroy_stacks (aTHX);	1133	coro_destroy (aTHX_ coro);
925		1134
926	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1135	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
927		1136
928	coro->mainstack = 0;	1137	coro->mainstack = 0;
929	}	1138	}
…		…
974	#else	1183	#else
975	# define MGf_DUP 0	1184	# define MGf_DUP 0
976	#endif	1185	#endif
977	};	1186	};
978		1187
979	static struct coro *
980	SvSTATE_ (pTHX_ SV *coro)
981	{
982	HV *stash;
983	MAGIC *mg;
984
985	if (SvROK (coro))
986	coro = SvRV (coro);
987
988	stash = SvSTASH (coro);
989	if (stash != coro_stash && stash != coro_state_stash)
990	{
991	/* very slow, but rare, check */
992	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
993	croak ("Coro::State object required");
994	}
995
996	mg = CORO_MAGIC (coro);
997	return (struct coro *)mg->mg_ptr;
998	}
999
1000	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1001
1002	static void	1188	static void
1003	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1189	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
1004	{	1190	{
1005	ta->prev = SvSTATE (prev_sv);	1191	ta->prev = SvSTATE (prev_sv);
1006	ta->next = SvSTATE (next_sv);	1192	ta->next = SvSTATE (next_sv);
		1193	TRANSFER_CHECK (*ta);
1007	}	1194	}
1008		1195
1009	static void	1196	static void
1010	api_transfer (SV prev_sv, SV next_sv)	1197	api_transfer (SV prev_sv, SV next_sv)
1011	{	1198	{
1012	dTHX;	1199	dTHX;
1013	struct transfer_args ta;	1200	struct transfer_args ta;
1014		1201
1015	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1202	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1016	TRANSFER (ta);	1203	TRANSFER (ta);
1017	}
1018
1019	static int
1020	api_save (SV *coro_sv, int new_save)
1021	{
1022	dTHX;
1023	struct coro *coro = SvSTATE (coro_sv);
1024	int old_save = coro->save;
1025
1026	if (new_save >= 0)
1027	coro->save = new_save;
1028
1029	return old_save;
1030	}	1204	}
1031		1205
1032	/ Coro ******************************************************************/	1206	/ Coro ******************************************************************/
1033		1207
1034	static void	1208	static void
…		…
1093	{	1267	{
1094	LOCK;	1268	LOCK;
1095	next_sv = coro_deq (aTHX_ PRIO_MIN);	1269	next_sv = coro_deq (aTHX_ PRIO_MIN);
1096		1270
1097	/* nothing to schedule: call the idle handler */	1271	/* nothing to schedule: call the idle handler */
1098	if (!next_sv)	1272	if (expect_false (!next_sv))
1099	{	1273	{
1100	dSP;	1274	dSP;
1101	UNLOCK;	1275	UNLOCK;
1102		1276
1103	ENTER;	1277	ENTER;
…		…
1113	}	1287	}
1114		1288
1115	ta->next = SvSTATE (next_sv);	1289	ta->next = SvSTATE (next_sv);
1116		1290
1117	/* cannot transfer to destroyed coros, skip and look for next */	1291	/* cannot transfer to destroyed coros, skip and look for next */
1118	if (ta->next->flags & CF_DESTROYED)	1292	if (expect_false (ta->next->flags & CF_DESTROYED))
1119	{	1293	{
1120	UNLOCK;	1294	UNLOCK;
1121	SvREFCNT_dec (next_sv);	1295	SvREFCNT_dec (next_sv);
1122	/* coro_nready is already taken care of by destroy */	1296	/* coro_nready is already taken care of by destroy */
1123	continue;	1297	continue;
…		…
1128	break;	1302	break;
1129	}	1303	}
1130		1304
1131	/* free this only after the transfer */	1305	/* free this only after the transfer */
1132	prev_sv = SvRV (coro_current);	1306	prev_sv = SvRV (coro_current);
1133	SvRV_set (coro_current, next_sv);
1134	ta->prev = SvSTATE (prev_sv);	1307	ta->prev = SvSTATE (prev_sv);
1135		1308	TRANSFER_CHECK (*ta);
1136	assert (ta->next->flags & CF_READY);	1309	assert (ta->next->flags & CF_READY);
1137	ta->next->flags &= ~CF_READY;	1310	ta->next->flags &= ~CF_READY;
		1311	SvRV_set (coro_current, next_sv);
1138		1312
1139	LOCK;	1313	LOCK;
1140	free_coro_mortal (aTHX);	1314	free_coro_mortal (aTHX);
1141	coro_mortal = prev_sv;	1315	coro_mortal = prev_sv;
1142	UNLOCK;	1316	UNLOCK;
…		…
1179	dTHX;	1353	dTHX;
1180	struct transfer_args ta;	1354	struct transfer_args ta;
1181		1355
1182	prepare_cede (aTHX_ &ta);	1356	prepare_cede (aTHX_ &ta);
1183		1357
1184	if (ta.prev != ta.next)	1358	if (expect_true (ta.prev != ta.next))
1185	{	1359	{
1186	TRANSFER (ta);	1360	TRANSFER (ta);
1187	return 1;	1361	return 1;
1188	}	1362	}
1189	else	1363	else
…		…
1203	}	1377	}
1204	else	1378	else
1205	return 0;	1379	return 0;
1206	}	1380	}
1207		1381
		1382	static void
		1383	api_trace (SV *coro_sv, int flags)
		1384	{
		1385	dTHX;
		1386	struct coro *coro = SvSTATE (coro_sv);
		1387
		1388	if (flags & CC_TRACE)
		1389	{
		1390	if (!coro->cctx)
		1391	coro->cctx = cctx_new ();
		1392	else if (!(coro->cctx->flags & CC_TRACE))
		1393	croak ("cannot enable tracing on coroutine with custom stack");
		1394
		1395	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1396	}
		1397	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1398	{
		1399	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1400
		1401	if (coro->flags & CF_RUNNING)
		1402	PL_runops = RUNOPS_DEFAULT;
		1403	else
		1404	coro->runops = RUNOPS_DEFAULT;
		1405	}
		1406	}
		1407
1208	MODULE = Coro::State PACKAGE = Coro::State	1408	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1209		1409
1210	PROTOTYPES: DISABLE	1410	PROTOTYPES: DISABLE
1211		1411
1212	BOOT:	1412	BOOT:
1213	{	1413	{
1214	#ifdef USE_ITHREADS	1414	#ifdef USE_ITHREADS
1215	MUTEX_INIT (&coro_mutex);	1415	MUTEX_INIT (&coro_mutex);
1216	#endif	1416	#endif
1217	BOOT_PAGESIZE;	1417	BOOT_PAGESIZE;
1218		1418
		1419	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1420	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1421
1219	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1422	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1220		1423
1221	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1424	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1222	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1425	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1223	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1224	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1226	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1426	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1227	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1427	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1228		1428
1229	main_mainstack = PL_mainstack;	1429	main_mainstack = PL_mainstack;
1230	main_top_env = PL_top_env;	1430	main_top_env = PL_top_env;
1231		1431
1232	while (main_top_env->je_prev)	1432	while (main_top_env->je_prev)
…		…
1245	struct coro *coro;	1445	struct coro *coro;
1246	HV *hv;	1446	HV *hv;
1247	int i;	1447	int i;
1248		1448
1249	Newz (0, coro, 1, struct coro);	1449	Newz (0, coro, 1, struct coro);
1250	coro->args = newAV ();	1450	coro->args = newAV ();
1251	coro->save = CORO_SAVE_DEF;
1252	coro->flags = CF_NEW;	1451	coro->flags = CF_NEW;
1253		1452
1254	if (coro_first) coro_first->prev = coro;	1453	if (coro_first) coro_first->prev = coro;
1255	coro->next = coro_first;	1454	coro->next = coro_first;
1256	coro_first = coro;	1455	coro_first = coro;
1257		1456
1258	coro->hv = hv = newHV ();	1457	coro->hv = hv = newHV ();
1259	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1458	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1260	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1459	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1261		1460
		1461	av_extend (coro->args, items - 1);
1262	for (i = 1; i < items; i++)	1462	for (i = 1; i < items; i++)
1263	av_push (coro->args, newSVsv (ST (i)));	1463	av_push (coro->args, newSVsv (ST (i)));
1264	}	1464	}
1265	OUTPUT:	1465	OUTPUT:
1266	RETVAL	1466	RETVAL
1267		1467
1268	int	1468	# these not obviously related functions are all rolled into the same xs
1269	save (SV *coro, int new_save = -1)	1469	# function to increase chances that they all will call transfer with the same
1270	CODE:	1470	# stack offset
1271	RETVAL = api_save (coro, new_save);
1272	OUTPUT:
1273	RETVAL
1274
1275	int
1276	save_also (SV *coro_sv, int save_also)
1277	CODE:
1278	{
1279	struct coro *coro = SvSTATE (coro_sv);
1280	RETVAL = coro->save;
1281	coro->save \|= save_also;
1282	}
1283	OUTPUT:
1284	RETVAL
1285
1286	void	1471	void
1287	_set_stacklevel (...)	1472	_set_stacklevel (...)
1288	ALIAS:	1473	ALIAS:
1289	Coro::State::transfer = 1	1474	Coro::State::transfer = 1
1290	Coro::schedule = 2	1475	Coro::schedule = 2
…		…
1324	}	1509	}
1325		1510
1326	BARRIER;	1511	BARRIER;
1327	TRANSFER (ta);	1512	TRANSFER (ta);
1328		1513
1329	if (GIMME_V != G_VOID && ta.next != ta.prev)	1514	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1330	XSRETURN_YES;	1515	XSRETURN_YES;
1331	}	1516	}
1332		1517
1333	bool	1518	bool
1334	_destroy (SV *coro_sv)	1519	_destroy (SV *coro_sv)
…		…
1376	if (coro->hv)	1561	if (coro->hv)
1377	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1562	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1378	}	1563	}
1379		1564
1380	void	1565	void
1381	_eval (Coro::State coro, SV *coderef)	1566	call (Coro::State coro, SV *coderef)
		1567	ALIAS:
		1568	eval = 1
1382	CODE:	1569	CODE:
1383	{	1570	{
1384	if (coro->mainstack)	1571	if (coro->mainstack)
1385	{	1572	{
1386	struct coro temp;	1573	struct coro temp;
1387	Zero (&temp, 1, struct coro);	1574	Zero (&temp, 1, struct coro);
1388	temp.save = CORO_SAVE_ALL;
1389		1575
1390	if (!(coro->flags & CF_RUNNING))	1576	if (!(coro->flags & CF_RUNNING))
1391	{	1577	{
1392	save_perl (aTHX_ &temp);	1578	save_perl (aTHX_ &temp);
1393	load_perl (aTHX_ coro);	1579	load_perl (aTHX_ coro);
…		…
1397	dSP;	1583	dSP;
1398	ENTER;	1584	ENTER;
1399	SAVETMPS;	1585	SAVETMPS;
1400	PUSHMARK (SP);	1586	PUSHMARK (SP);
1401	PUTBACK;	1587	PUTBACK;
		1588	if (ix)
		1589	eval_sv (coderef, 0);
		1590	else
1402	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1591	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
1403	SPAGAIN;	1592	SPAGAIN;
1404	FREETMPS;	1593	FREETMPS;
1405	LEAVE;	1594	LEAVE;
1406	PUTBACK;	1595	PUTBACK;
1407	}	1596	}
…		…
1411	save_perl (aTHX_ coro);	1600	save_perl (aTHX_ coro);
1412	load_perl (aTHX_ &temp);	1601	load_perl (aTHX_ &temp);
1413	}	1602	}
1414	}	1603	}
1415	}	1604	}
1416		1605
1417	SV *	1606	SV *
1418	is_ready (Coro::State coro)	1607	is_ready (Coro::State coro)
1419	PROTOTYPE: $	1608	PROTOTYPE: $
1420	ALIAS:	1609	ALIAS:
1421	is_ready = CF_READY	1610	is_ready = CF_READY
…		…
1425	CODE:	1614	CODE:
1426	RETVAL = boolSV (coro->flags & ix);	1615	RETVAL = boolSV (coro->flags & ix);
1427	OUTPUT:	1616	OUTPUT:
1428	RETVAL	1617	RETVAL
1429		1618
		1619	void
		1620	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1621
		1622	SV *
		1623	has_stack (Coro::State coro)
		1624	PROTOTYPE: $
		1625	CODE:
		1626	RETVAL = boolSV (!!coro->cctx);
		1627	OUTPUT:
		1628	RETVAL
		1629
		1630	int
		1631	is_traced (Coro::State coro)
		1632	PROTOTYPE: $
		1633	CODE:
		1634	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1635	OUTPUT:
		1636	RETVAL
		1637
1430	IV	1638	IV
1431	rss (Coro::State coro)	1639	rss (Coro::State coro)
1432	PROTOTYPE: $	1640	PROTOTYPE: $
		1641	ALIAS:
		1642	usecount = 1
1433	CODE:	1643	CODE:
1434	RETVAL = coro_rss (coro);	1644	switch (ix)
		1645	{
		1646	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1647	case 1: RETVAL = coro->usecount; break;
		1648	}
1435	OUTPUT:	1649	OUTPUT:
1436	RETVAL	1650	RETVAL
1437		1651
1438		1652
1439	MODULE = Coro::State PACKAGE = Coro	1653	MODULE = Coro::State PACKAGE = Coro
1440		1654
1441	BOOT:	1655	BOOT:
1442	{	1656	{
1443	int i;	1657	int i;
		1658
		1659	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1660	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1661	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1662
		1663	coro_current = get_sv ("Coro::current", FALSE);
		1664	SvREADONLY_on (coro_current);
1444		1665
1445	coro_stash = gv_stashpv ("Coro", TRUE);	1666	coro_stash = gv_stashpv ("Coro", TRUE);
1446		1667
1447	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1668	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1448	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1669	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1449	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1670	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1450	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1671	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1451	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1672	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1452	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1673	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1453		1674
1454	coro_current = get_sv ("Coro::current", FALSE);
1455	SvREADONLY_on (coro_current);
1456
1457	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1675	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1458	coro_ready[i] = newAV ();	1676	coro_ready[i] = newAV ();
1459		1677
1460	{	1678	{
1461	SV *sv = perl_get_sv("Coro::API", 1);	1679	SV *sv = perl_get_sv("Coro::API", 1);
1462		1680
1463	coroapi.schedule = api_schedule;	1681	coroapi.schedule = api_schedule;
1464	coroapi.save = api_save;
1465	coroapi.cede = api_cede;	1682	coroapi.cede = api_cede;
1466	coroapi.cede_notself = api_cede_notself;	1683	coroapi.cede_notself = api_cede_notself;
1467	coroapi.ready = api_ready;	1684	coroapi.ready = api_ready;
1468	coroapi.is_ready = api_is_ready;	1685	coroapi.is_ready = api_is_ready;
1469	coroapi.nready = &coro_nready;	1686	coroapi.nready = &coro_nready;
…		…
1518	CODE:	1735	CODE:
1519	RETVAL = coro_nready;	1736	RETVAL = coro_nready;
1520	OUTPUT:	1737	OUTPUT:
1521	RETVAL	1738	RETVAL
1522		1739
		1740	void
		1741	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1742	PROTOTYPE: $;$
		1743	CODE:
		1744	SvREFCNT_dec (self->throw);
		1745	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1746
		1747	# for async_pool speedup
		1748	void
		1749	_pool_1 (SV *cb)
		1750	CODE:
		1751	{
		1752	struct coro *coro = SvSTATE (coro_current);
		1753	HV hv = (HV )SvRV (coro_current);
		1754	AV *defav = GvAV (PL_defgv);
		1755	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1756	AV *invoke_av;
		1757	int i, len;
		1758
		1759	if (!invoke)
		1760	croak ("\3terminate\2\n");
		1761
		1762	SvREFCNT_dec (coro->saved_deffh);
		1763	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1764
		1765	hv_store (hv, "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1767
		1768	invoke_av = (AV *)SvRV (invoke);
		1769	len = av_len (invoke_av);
		1770
		1771	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1772
		1773	if (len > 0)
		1774	{
		1775	av_fill (defav, len - 1);
		1776	for (i = 0; i < len; ++i)
		1777	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1778	}
		1779
		1780	SvREFCNT_dec (invoke);
		1781	}
		1782
		1783	void
		1784	_pool_2 (SV *cb)
		1785	CODE:
		1786	{
		1787	struct coro *coro = SvSTATE (coro_current);
		1788
		1789	sv_setsv (cb, &PL_sv_undef);
		1790
		1791	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1792	coro->saved_deffh = 0;
		1793
		1794	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1795	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1796	croak ("\3terminate\2\n");
		1797
		1798	av_clear (GvAV (PL_defgv));
		1799	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1800	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1801
		1802	coro->prio = 0;
		1803
		1804	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1805	api_trace (coro_current, 0);
		1806
		1807	av_push (av_async_pool, newSVsv (coro_current));
		1808	}
		1809
		1810
1523	MODULE = Coro::State PACKAGE = Coro::AIO	1811	MODULE = Coro::State PACKAGE = Coro::AIO
1524		1812
1525	SV *	1813	SV *
1526	_get_state ()	1814	_get_state ()
1527	CODE:	1815	CODE:

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.154 by root, Fri Sep 21 01:08:06 2007 UTC vs. Revision 1.196 by root, Sat Oct 6 01:11:01 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.154 by root, Fri Sep 21 01:08:06 2007 UTC vs.
Revision 1.196 by root, Sat Oct 6 01:11:01 2007 UTC