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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.192 by root, Fri Oct 5 21:51:40 2007 UTC vs.
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.8.8 */
		87	#ifndef GV_NOTQUAL
		88	# define GV_NOTQUAL 0
		89	#endif
		90	#ifndef newSV
		91	# define newSV(l) NEWSV(0,l)
		92	#endif
		93	#ifndef SvREFCNT_inc_NN
		94	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		95	#endif
		96
		97	/* 5.11 */
		98	#ifndef CxHASARGS
		99	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		100	#endif
		101
75	/* 5.8.7 */	102	/* 5.8.7 */
76	#ifndef SvRV_set	103	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	104	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif
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	105	#endif
87		106
88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	107	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89	# undef CORO_STACKGUARD	108	# undef CORO_STACKGUARD
90	#endif	109	#endif
…		…
106	#define IN_DESTRUCT (PL_main_cv == Nullcv)	125	#define IN_DESTRUCT (PL_main_cv == Nullcv)
107		126
108	#if __GNUC__ >= 3	127	#if __GNUC__ >= 3
109	# define attribute(x) __attribute__(x)	128	# define attribute(x) __attribute__(x)
110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	129	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		130	# define expect(expr,value) __builtin_expect ((expr),(value))
111	#else	131	#else
112	# define attribute(x)	132	# define attribute(x)
113	# define BARRIER	133	# define BARRIER
		134	# define expect(expr,value) (expr)
114	#endif	135	#endif
		136
		137	#define expect_false(expr) expect ((expr) != 0, 0)
		138	#define expect_true(expr) expect ((expr) != 0, 1)
115		139
116	#define NOINLINE attribute ((noinline))	140	#define NOINLINE attribute ((noinline))
117		141
118	#include "CoroAPI.h"	142	#include "CoroAPI.h"
119		143
…		…
127	#endif	151	#endif
128		152
129	/* helper storage struct for Coro::AIO */	153	/* helper storage struct for Coro::AIO */
130	struct io_state	154	struct io_state
131	{	155	{
		156	AV *res;
132	int errorno;	157	int errorno;
133	I32 laststype;	158	I32 laststype;
134	int laststatval;	159	int laststatval;
135	Stat_t statcache;	160	Stat_t statcache;
136	};	161	};
137		162
		163	static double (*nvtime)(); /* so why doesn't it take void? */
		164
138	static size_t coro_stacksize = CORO_STACKSIZE;	165	static size_t coro_stacksize = CORO_STACKSIZE;
139	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
140	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
141	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
142	static HV *coro_state_stash, *coro_stash;	169	static HV *coro_state_stash, *coro_stash;
143	static SV *coro_mortal; /* will be freed after next transfer */	170	static volatile SV *coro_mortal; /* will be freed after next transfer */
144		171
145	static GV *irsgv; /* $/ */	172	static GV *irsgv; /* $/ */
146	static GV *stdoutgv; /* *STDOUT */	173	static GV *stdoutgv; /* *STDOUT */
		174	static SV *rv_diehook;
		175	static SV *rv_warnhook;
		176	static HV *hv_sig; /* %SIG */
147		177
148	/* async_pool helper stuff */	178	/* async_pool helper stuff */
149	static SV *sv_pool_rss;	179	static SV *sv_pool_rss;
150	static SV *sv_pool_size;	180	static SV *sv_pool_size;
151	static AV *av_async_pool;	181	static AV *av_async_pool;
		182
		183	/* Coro::AnyEvent */
		184	static SV *sv_activity;
152		185
153	static struct coro_cctx *cctx_first;	186	static struct coro_cctx *cctx_first;
154	static int cctx_count, cctx_idle;	187	static int cctx_count, cctx_idle;
155		188
156	enum {	189	enum {
…		…
187	CF_READY = 0x0002, /* coroutine is ready */	220	CF_READY = 0x0002, /* coroutine is ready */
188	CF_NEW = 0x0004, /* has never been switched to */	221	CF_NEW = 0x0004, /* has never been switched to */
189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	222	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
190	};	223	};
191		224
		225	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		226	typedef struct {
		227	SV *defsv;
		228	AV *defav;
		229	SV *errsv;
		230	SV *irsgv;
		231	#define VAR(name,type) type name;
		232	# include "state.h"
		233	#undef VAR
		234	} perl_slots;
		235
		236	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		237
192	/* this is a structure representing a perl-level coroutine */	238	/* this is a structure representing a perl-level coroutine */
193	struct coro {	239	struct coro {
194	/* the c coroutine allocated to this perl coroutine, if any */	240	/* the c coroutine allocated to this perl coroutine, if any */
195	coro_cctx *cctx;	241	coro_cctx *cctx;
196		242
		243	/* process data */
		244	AV *mainstack;
		245	perl_slots *slot; /* basically the saved sp */
		246
197	/* data associated with this coroutine (initial args) */	247	AV *args; /* data associated with this coroutine (initial args) */
198	AV *args;	248	int refcnt; /* coroutines are refcounted, yes */
199	int refcnt;
200	int flags; /* CF_ flags */	249	int flags; /* CF_ flags */
201		250	HV *hv; /* the perl hash associated with this coro, if any */
202	/* optionally saved, might be zero */
203	AV *defav; /* @_ */
204	SV *defsv; /* $_ */
205	SV *errsv; /* $@ */
206	SV *deffh; /* default filehandle */
207	SV *irssv; /* $/ */
208	SV *irssv_sv; /* real $/ cache */
209
210	#define VAR(name,type) type name;
211	# include "state.h"
212	#undef VAR
213		251
214	/* statistics */	252	/* statistics */
215	int usecount; /* number of transfers to this coro */	253	int usecount; /* number of transfers to this coro */
216		254
217	/* coro process data */	255	/* coro process data */
218	int prio;	256	int prio;
219	//SV *throw;	257	SV *throw; /* exception to be thrown */
220		258
221	/* async_pool */	259	/* async_pool */
222	SV *saved_deffh;	260	SV *saved_deffh;
223		261
224	/* linked list */	262	/* linked list */
225	struct coro *next, *prev;	263	struct coro *next, *prev;
226	HV *hv; /* the perl hash associated with this coro, if any */
227	};	264	};
228		265
229	typedef struct coro *Coro__State;	266	typedef struct coro *Coro__State;
230	typedef struct coro *Coro__State_or_hashref;	267	typedef struct coro *Coro__State_or_hashref;
231		268
…		…
238	#define PRIO_IDLE -3	275	#define PRIO_IDLE -3
239	#define PRIO_MIN -4	276	#define PRIO_MIN -4
240		277
241	/* for Coro.pm */	278	/* for Coro.pm */
242	static SV *coro_current;	279	static SV *coro_current;
		280	static SV *coro_readyhook;
243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	281	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
244	static int coro_nready;	282	static int coro_nready;
245	static struct coro *coro_first;	283	static struct coro *coro_first;
246		284
247	/** lowlevel stuff **********************************************************/	285	/** lowlevel stuff **********************************************************/
248		286
		287	static SV *
		288	coro_get_sv (pTHX_ const char *name, int create)
		289	{
		290	#if PERL_VERSION_ATLEAST (5,10,0)
		291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		292	get_sv (name, create);
		293	#endif
		294	return get_sv (name, create);
		295	}
		296
		297	static AV *
		298	coro_get_av (pTHX_ const char *name, int create)
		299	{
		300	#if PERL_VERSION_ATLEAST (5,10,0)
		301	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		302	get_av (name, create);
		303	#endif
		304	return get_av (name, create);
		305	}
		306
		307	static HV *
		308	coro_get_hv (pTHX_ const char *name, int create)
		309	{
		310	#if PERL_VERSION_ATLEAST (5,10,0)
		311	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		312	get_hv (name, create);
		313	#endif
		314	return get_hv (name, create);
		315	}
		316
249	static AV *	317	static AV *
250	coro_clone_padlist (pTHX_ CV *cv)	318	coro_clone_padlist (pTHX_ CV *cv)
251	{	319	{
252	AV *padlist = CvPADLIST (cv);	320	AV *padlist = CvPADLIST (cv);
253	AV *newpadlist, *newpad;	321	AV *newpadlist, *newpad;
254		322
255	newpadlist = newAV ();	323	newpadlist = newAV ();
256	AvREAL_off (newpadlist);	324	AvREAL_off (newpadlist);
257	#if PERL_VERSION_ATLEAST (5,9,0)	325	#if PERL_VERSION_ATLEAST (5,10,0)
258	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	326	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
259	#else	327	#else
260	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
261	#endif	329	#endif
262	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	330	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
263	--AvFILLp (padlist);	331	--AvFILLp (padlist);
264		332
265	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	333	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
266	av_store (newpadlist, 1, (SV *)newpad);	334	av_store (newpadlist, 1, (SV *)newpad);
267		335
268	return newpadlist;	336	return newpadlist;
269	}	337	}
270		338
…		…
300		368
301	/* casting is fun. */	369	/* casting is fun. */
302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	370	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
303	free_padlist (aTHX_ padlist);	371	free_padlist (aTHX_ padlist);
304		372
305	SvREFCNT_dec (av);	373	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
306		374
307	return 0;	375	return 0;
308	}	376	}
309		377
310	#define PERL_MAGIC_coro PERL_MAGIC_ext	378	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		379	#define CORO_MAGIC_type_state PERL_MAGIC_ext
311		380
312	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	381	static MGVTBL coro_cv_vtbl = {
		382	0, 0, 0, 0,
		383	coro_cv_free
		384	};
313		385
314	#define CORO_MAGIC(cv) \	386	#define CORO_MAGIC(sv,type) \
315	SvMAGIC (cv) \	387	SvMAGIC (sv) \
316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	388	? SvMAGIC (sv)->mg_type == type \
317	? SvMAGIC (cv) \	389	? SvMAGIC (sv) \
318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	390	: mg_find (sv, type) \
319	: 0	391	: 0
		392
		393	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		394	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
320		395
321	static struct coro *	396	static struct coro *
322	SvSTATE_ (pTHX_ SV *coro)	397	SvSTATE_ (pTHX_ SV *coro)
323	{	398	{
324	HV *stash;	399	HV *stash;
325	MAGIC *mg;	400	MAGIC *mg;
326		401
327	if (SvROK (coro))	402	if (SvROK (coro))
328	coro = SvRV (coro);	403	coro = SvRV (coro);
329		404
330	if (SvTYPE (coro) != SVt_PVHV)	405	if (expect_false (SvTYPE (coro) != SVt_PVHV))
331	croak ("Coro::State object required");	406	croak ("Coro::State object required");
332		407
333	stash = SvSTASH (coro);	408	stash = SvSTASH (coro);
334	if (stash != coro_stash && stash != coro_state_stash)	409	if (expect_false (stash != coro_stash && stash != coro_state_stash))
335	{	410	{
336	/* very slow, but rare, check */	411	/* very slow, but rare, check */
337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	412	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
338	croak ("Coro::State object required");	413	croak ("Coro::State object required");
339	}	414	}
340		415
341	mg = CORO_MAGIC (coro);	416	mg = CORO_MAGIC_state (coro);
342	return (struct coro *)mg->mg_ptr;	417	return (struct coro *)mg->mg_ptr;
343	}	418	}
344		419
345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	420	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
346		421
347	/* the next two functions merely cache the padlists */	422	/* the next two functions merely cache the padlists */
348	static void	423	static void
349	get_padlist (pTHX_ CV *cv)	424	get_padlist (pTHX_ CV *cv)
350	{	425	{
351	MAGIC *mg = CORO_MAGIC (cv);	426	MAGIC *mg = CORO_MAGIC_cv (cv);
352	AV *av;	427	AV *av;
353		428
354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	429	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	430	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
356	else	431	else
357	{	432	{
358	#if CORO_PREFER_PERL_FUNCTIONS	433	#if CORO_PREFER_PERL_FUNCTIONS
359	/* this is probably cleaner, but also slower? */	434	/* this is probably cleaner? but also slower! */
		435	/* in practise, it seems to be less stable */
360	CV *cp = Perl_cv_clone (cv);	436	CV *cp = Perl_cv_clone (cv);
361	CvPADLIST (cv) = CvPADLIST (cp);	437	CvPADLIST (cv) = CvPADLIST (cp);
362	CvPADLIST (cp) = 0;	438	CvPADLIST (cp) = 0;
363	SvREFCNT_dec (cp);	439	SvREFCNT_dec (cp);
364	#else	440	#else
…		…
368	}	444	}
369		445
370	static void	446	static void
371	put_padlist (pTHX_ CV *cv)	447	put_padlist (pTHX_ CV *cv)
372	{	448	{
373	MAGIC *mg = CORO_MAGIC (cv);	449	MAGIC *mg = CORO_MAGIC_cv (cv);
374	AV *av;	450	AV *av;
375		451
376	if (!mg)	452	if (expect_false (!mg))
377	{	453	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
378	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
379	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
380	mg->mg_virtual = &vtbl_coro;
381	mg->mg_obj = (SV *)newAV ();
382	}
383		454
384	av = (AV *)mg->mg_obj;	455	av = (AV *)mg->mg_obj;
385		456
386	if (AvFILLp (av) >= AvMAX (av))	457	if (expect_false (AvFILLp (av) >= AvMAX (av)))
387	av_extend (av, AvMAX (av) + 1);	458	av_extend (av, AvMAX (av) + 1);
388		459
389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	460	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
390	}	461	}
391		462
392	/** load & save, init *******************************************************/	463	/** load & save, init *******************************************************/
393		464
394	static void	465	static void
395	load_perl (pTHX_ Coro__State c)	466	load_perl (pTHX_ Coro__State c)
396	{	467	{
		468	perl_slots *slot = c->slot;
		469	c->slot = 0;
		470
		471	PL_mainstack = c->mainstack;
		472
		473	GvSV (PL_defgv) = slot->defsv;
		474	GvAV (PL_defgv) = slot->defav;
		475	GvSV (PL_errgv) = slot->errsv;
		476	GvSV (irsgv) = slot->irsgv;
		477
397	#define VAR(name,type) PL_ ## name = c->name;	478	#define VAR(name,type) PL_ ## name = slot->name;
398	# include "state.h"	479	# include "state.h"
399	#undef VAR	480	#undef VAR
400
401	GvSV (PL_defgv) = c->defsv;
402	GvAV (PL_defgv) = c->defav;
403	GvSV (PL_errgv) = c->errsv;
404	GvSV (irsgv) = c->irssv_sv;
405		481
406	{	482	{
407	dSP;	483	dSP;
		484
408	CV *cv;	485	CV *cv;
409		486
410	/* now do the ugly restore mess */	487	/* now do the ugly restore mess */
411	while ((cv = (CV *)POPs))	488	while (expect_true (cv = (CV *)POPs))
412	{	489	{
413	put_padlist (aTHX_ cv); /* mark this padlist as available */	490	put_padlist (aTHX_ cv); /* mark this padlist as available */
414	CvDEPTH (cv) = PTR2IV (POPs);	491	CvDEPTH (cv) = PTR2IV (POPs);
415	CvPADLIST (cv) = (AV *)POPs;	492	CvPADLIST (cv) = (AV *)POPs;
416	}	493	}
…		…
435		512
436	XPUSHs (Nullsv);	513	XPUSHs (Nullsv);
437	/* this loop was inspired by pp_caller */	514	/* this loop was inspired by pp_caller */
438	for (;;)	515	for (;;)
439	{	516	{
440	while (cxix >= 0)	517	while (expect_true (cxix >= 0))
441	{	518	{
442	PERL_CONTEXT *cx = &ccstk[cxix--];	519	PERL_CONTEXT *cx = &ccstk[cxix--];
443		520
444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	521	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
445	{	522	{
446	CV *cv = cx->blk_sub.cv;	523	CV *cv = cx->blk_sub.cv;
447		524
448	if (CvDEPTH (cv))	525	if (expect_true (CvDEPTH (cv)))
449	{	526	{
450	EXTEND (SP, 3);	527	EXTEND (SP, 3);
451	PUSHs ((SV *)CvPADLIST (cv));	528	PUSHs ((SV *)CvPADLIST (cv));
452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	529	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453	PUSHs ((SV *)cv);	530	PUSHs ((SV *)cv);
454		531
455	CvDEPTH (cv) = 0;	532	CvDEPTH (cv) = 0;
456	get_padlist (aTHX_ cv);	533	get_padlist (aTHX_ cv);
457	}	534	}
458	}	535	}
459	}	536	}
460		537
461	if (top_si->si_type == PERLSI_MAIN)	538	if (expect_true (top_si->si_type == PERLSI_MAIN))
462	break;	539	break;
463		540
464	top_si = top_si->si_prev;	541	top_si = top_si->si_prev;
465	ccstk = top_si->si_cxstack;	542	ccstk = top_si->si_cxstack;
466	cxix = top_si->si_cxix;	543	cxix = top_si->si_cxix;
467	}	544	}
468		545
469	PUTBACK;	546	PUTBACK;
470	}	547	}
471		548
		549	/* allocate some space on the context stack for our purposes */
		550	/* we manually unroll here, as usually 2 slots is enough */
		551	if (SLOT_COUNT >= 1) CXINC;
		552	if (SLOT_COUNT >= 2) CXINC;
		553	if (SLOT_COUNT >= 3) CXINC;
		554	{
		555	int i;
		556	for (i = 3; i < SLOT_COUNT; ++i)
		557	CXINC;
		558	}
		559	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		560
		561	c->mainstack = PL_mainstack;
		562
		563	{
		564	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		565
472	c->defav = GvAV (PL_defgv);	566	slot->defav = GvAV (PL_defgv);
473	c->defsv = DEFSV;	567	slot->defsv = DEFSV;
474	c->errsv = ERRSV;	568	slot->errsv = ERRSV;
475	c->irssv_sv = GvSV (irsgv);	569	slot->irsgv = GvSV (irsgv);
476		570
477	#define VAR(name,type)c->name = PL_ ## name;	571	#define VAR(name,type) slot->name = PL_ ## name;
478	# include "state.h"	572	# include "state.h"
479	#undef VAR	573	#undef VAR
		574	}
480	}	575	}
481		576
482	/*	577	/*
483	* allocate various perl stacks. This is an exact copy	578	* allocate various perl stacks. This is an exact copy
484	* of perl.c:init_stacks, except that it uses less memory	579	* of perl.c:init_stacks, except that it uses less memory
…		…
489	# define coro_init_stacks init_stacks	584	# define coro_init_stacks init_stacks
490	#else	585	#else
491	static void	586	static void
492	coro_init_stacks (pTHX)	587	coro_init_stacks (pTHX)
493	{	588	{
494	PL_curstackinfo = new_stackinfo(64, 6);	589	PL_curstackinfo = new_stackinfo(32, 8);
495	PL_curstackinfo->si_type = PERLSI_MAIN;	590	PL_curstackinfo->si_type = PERLSI_MAIN;
496	PL_curstack = PL_curstackinfo->si_stack;	591	PL_curstack = PL_curstackinfo->si_stack;
497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	592	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
498		593
499	PL_stack_base = AvARRAY(PL_curstack);	594	PL_stack_base = AvARRAY(PL_curstack);
500	PL_stack_sp = PL_stack_base;	595	PL_stack_sp = PL_stack_base;
501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	596	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
502		597
503	New(50,PL_tmps_stack,64,SV*);	598	New(50,PL_tmps_stack,32,SV*);
504	PL_tmps_floor = -1;	599	PL_tmps_floor = -1;
505	PL_tmps_ix = -1;	600	PL_tmps_ix = -1;
506	PL_tmps_max = 64;	601	PL_tmps_max = 32;
507		602
508	New(54,PL_markstack,16,I32);	603	New(54,PL_markstack,16,I32);
509	PL_markstack_ptr = PL_markstack;	604	PL_markstack_ptr = PL_markstack;
510	PL_markstack_max = PL_markstack + 16;	605	PL_markstack_max = PL_markstack + 16;
511		606
512	#ifdef SET_MARK_OFFSET	607	#ifdef SET_MARK_OFFSET
513	SET_MARK_OFFSET;	608	SET_MARK_OFFSET;
514	#endif	609	#endif
515		610
516	New(54,PL_scopestack,16,I32);	611	New(54,PL_scopestack,8,I32);
517	PL_scopestack_ix = 0;	612	PL_scopestack_ix = 0;
518	PL_scopestack_max = 16;	613	PL_scopestack_max = 8;
519		614
520	New(54,PL_savestack,64,ANY);	615	New(54,PL_savestack,24,ANY);
521	PL_savestack_ix = 0;	616	PL_savestack_ix = 0;
522	PL_savestack_max = 64;	617	PL_savestack_max = 24;
523		618
524	#if !PERL_VERSION_ATLEAST (5,9,0)	619	#if !PERL_VERSION_ATLEAST (5,10,0)
525	New(54,PL_retstack,4,OP*);	620	New(54,PL_retstack,4,OP*);
526	PL_retstack_ix = 0;	621	PL_retstack_ix = 0;
527	PL_retstack_max = 4;	622	PL_retstack_max = 4;
528	#endif	623	#endif
529	}	624	}
…		…
552		647
553	Safefree (PL_tmps_stack);	648	Safefree (PL_tmps_stack);
554	Safefree (PL_markstack);	649	Safefree (PL_markstack);
555	Safefree (PL_scopestack);	650	Safefree (PL_scopestack);
556	Safefree (PL_savestack);	651	Safefree (PL_savestack);
557	#if !PERL_VERSION_ATLEAST (5,9,0)	652	#if !PERL_VERSION_ATLEAST (5,10,0)
558	Safefree (PL_retstack);	653	Safefree (PL_retstack);
559	#endif	654	#endif
560	}	655	}
561		656
562	static size_t	657	static size_t
…		…
564	{	659	{
565	size_t rss = sizeof (*coro);	660	size_t rss = sizeof (*coro);
566		661
567	if (coro->mainstack)	662	if (coro->mainstack)
568	{	663	{
		664	perl_slots tmp_slot;
		665	perl_slots *slot;
		666
569	if (coro->flags & CF_RUNNING)	667	if (coro->flags & CF_RUNNING)
570	{	668	{
		669	slot = &tmp_slot;
		670
571	#define VAR(name,type)coro->name = PL_ ## name;	671	#define VAR(name,type) slot->name = PL_ ## name;
572	# include "state.h"	672	# include "state.h"
573	#undef VAR	673	#undef VAR
574	}	674	}
		675	else
		676	slot = coro->slot;
575		677
		678	if (slot)
		679	{
576	rss += sizeof (coro->curstackinfo);	680	rss += sizeof (slot->curstackinfo);
577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	681	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	682	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
580	rss += coro->tmps_max * sizeof (SV *);	683	rss += slot->tmps_max * sizeof (SV *);
581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	684	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
582	rss += coro->scopestack_max * sizeof (I32);	685	rss += slot->scopestack_max * sizeof (I32);
583	rss += coro->savestack_max * sizeof (ANY);	686	rss += slot->savestack_max * sizeof (ANY);
584		687
585	#if !PERL_VERSION_ATLEAST (5,9,0)	688	#if !PERL_VERSION_ATLEAST (5,10,0)
586	rss += coro->retstack_max * sizeof (OP *);	689	rss += slot->retstack_max * sizeof (OP *);
587	#endif	690	#endif
		691	}
588	}	692	}
589		693
590	return rss;	694	return rss;
591	}	695	}
592		696
593	/** coroutine stack handling ************************************************/	697	/** coroutine stack handling ************************************************/
		698
		699	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		700	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		701	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		702
		703	/* apparently < 5.8.8 */
		704	#ifndef MgPV_nolen_const
		705	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		706	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		707	(const char*)(mg)->mg_ptr)
		708	#endif
		709
		710	/*
		711	* This overrides the default magic get method of %SIG elements.
		712	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		713	* and instead of tryign to save and restore the hash elements, we just provide
		714	* readback here.
		715	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		716	* not expecting this to actually change the hook. This is a potential problem
		717	* when a schedule happens then, but we ignore this.
		718	*/
		719	static int
		720	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		721	{
		722	const char *s = MgPV_nolen_const (mg);
		723
		724	if (*s == '_')
		725	{
		726	SV **svp = 0;
		727
		728	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		729	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		730
		731	if (svp)
		732	{
		733	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		734	return 0;
		735	}
		736	}
		737
		738	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		739	}
		740
		741	static int
		742	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		743	{
		744	const char *s = MgPV_nolen_const (mg);
		745
		746	if (*s == '_')
		747	{
		748	SV **svp = 0;
		749
		750	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		751	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		752
		753	if (svp)
		754	{
		755	SV *old = *svp;
		756	*svp = 0;
		757	SvREFCNT_dec (old);
		758	return 0;
		759	}
		760	}
		761
		762	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		763	}
		764
		765	static int
		766	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	const char *s = MgPV_nolen_const (mg);
		769
		770	if (*s == '_')
		771	{
		772	SV **svp = 0;
		773
		774	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		775	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		776
		777	if (svp)
		778	{
		779	SV *old = *svp;
		780	*svp = newSVsv (sv);
		781	SvREFCNT_dec (old);
		782	return 0;
		783	}
		784	}
		785
		786	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		787	}
594		788
595	static void	789	static void
596	coro_setup (pTHX_ struct coro *coro)	790	coro_setup (pTHX_ struct coro *coro)
597	{	791	{
598	/*	792	/*
…		…
603	PL_runops = RUNOPS_DEFAULT;	797	PL_runops = RUNOPS_DEFAULT;
604	PL_curcop = &PL_compiling;	798	PL_curcop = &PL_compiling;
605	PL_in_eval = EVAL_NULL;	799	PL_in_eval = EVAL_NULL;
606	PL_comppad = 0;	800	PL_comppad = 0;
607	PL_curpm = 0;	801	PL_curpm = 0;
		802	PL_curpad = 0;
608	PL_localizing = 0;	803	PL_localizing = 0;
609	PL_dirty = 0;	804	PL_dirty = 0;
610	PL_restartop = 0;	805	PL_restartop = 0;
		806	#if PERL_VERSION_ATLEAST (5,10,0)
		807	PL_parser = 0;
		808	#endif
		809
		810	/* recreate the die/warn hooks */
		811	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		812	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
611		813
612	GvSV (PL_defgv) = newSV (0);	814	GvSV (PL_defgv) = newSV (0);
613	GvAV (PL_defgv) = coro->args; coro->args = 0;	815	GvAV (PL_defgv) = coro->args; coro->args = 0;
614	GvSV (PL_errgv) = newSV (0);	816	GvSV (PL_errgv) = newSV (0);
615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	817	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
616	PL_rs = newSVsv (GvSV (irsgv));	818	PL_rs = newSVsv (GvSV (irsgv));
617	PL_defoutgv = SvREFCNT_inc (stdoutgv);	819	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
618
619	ENTER; /* necessary e.g. for dounwind */
620		820
621	{	821	{
622	dSP;	822	dSP;
623	LOGOP myop;	823	LOGOP myop;
624		824
…		…
631	PUTBACK;	831	PUTBACK;
632	PL_op = (OP *)&myop;	832	PL_op = (OP *)&myop;
633	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	833	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
634	SPAGAIN;	834	SPAGAIN;
635	}	835	}
		836
		837	/* this newly created coroutine might be run on an existing cctx which most
		838	* likely was suspended in set_stacklevel, called from entersub.
		839	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		840	* so we ENTER here for symmetry
		841	*/
		842	ENTER;
636	}	843	}
637		844
638	static void	845	static void
639	coro_destroy (pTHX_ struct coro *coro)	846	coro_destroy (pTHX_ struct coro *coro)
640	{	847	{
…		…
660	SvREFCNT_dec (GvSV (PL_errgv));	867	SvREFCNT_dec (GvSV (PL_errgv));
661	SvREFCNT_dec (PL_defoutgv);	868	SvREFCNT_dec (PL_defoutgv);
662	SvREFCNT_dec (PL_rs);	869	SvREFCNT_dec (PL_rs);
663	SvREFCNT_dec (GvSV (irsgv));	870	SvREFCNT_dec (GvSV (irsgv));
664		871
		872	SvREFCNT_dec (PL_diehook);
		873	SvREFCNT_dec (PL_warnhook);
		874
665	SvREFCNT_dec (coro->saved_deffh);	875	SvREFCNT_dec (coro->saved_deffh);
666	//SvREFCNT_dec (coro->throw);	876	SvREFCNT_dec (coro->throw);
667		877
668	coro_destroy_stacks (aTHX);	878	coro_destroy_stacks (aTHX);
669	}	879	}
670		880
671	static void	881	static void
672	free_coro_mortal (pTHX)	882	free_coro_mortal (pTHX)
673	{	883	{
674	if (coro_mortal)	884	if (expect_true (coro_mortal))
675	{	885	{
676	SvREFCNT_dec (coro_mortal);	886	SvREFCNT_dec (coro_mortal);
677	coro_mortal = 0;	887	coro_mortal = 0;
678	}	888	}
679	}	889	}
…		…
708	bot = PL_stack_base + cx->blk_oldsp + 1;	918	bot = PL_stack_base + cx->blk_oldsp + 1;
709	top = cx->blk_gimme == G_ARRAY ? SP + 1	919	top = cx->blk_gimme == G_ARRAY ? SP + 1
710	: cx->blk_gimme == G_SCALAR ? bot + 1	920	: cx->blk_gimme == G_SCALAR ? bot + 1
711	: bot;	921	: bot;
712		922
		923	av_extend (av, top - bot);
713	while (bot < top)	924	while (bot < top)
714	av_push (av, SvREFCNT_inc (*bot++));	925	av_push (av, SvREFCNT_inc_NN (*bot++));
715		926
716	PL_runops = RUNOPS_DEFAULT;	927	PL_runops = RUNOPS_DEFAULT;
717	ENTER;	928	ENTER;
718	SAVETMPS;	929	SAVETMPS;
719	EXTEND (SP, 3);	930	EXTEND (SP, 3);
…		…
757	SAVETMPS;	968	SAVETMPS;
758	EXTEND (SP, 3);	969	EXTEND (SP, 3);
759	PUSHMARK (SP);	970	PUSHMARK (SP);
760	PUSHs (&PL_sv_yes);	971	PUSHs (&PL_sv_yes);
761	PUSHs (fullname);	972	PUSHs (fullname);
762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	973	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
763	PUTBACK;	974	PUTBACK;
764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	975	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	976	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
766	SPAGAIN;	977	SPAGAIN;
767	FREETMPS;	978	FREETMPS;
…		…
803		1014
804	/* inject a fake call to Coro::State::_cctx_init into the execution */	1015	/* inject a fake call to Coro::State::_cctx_init into the execution */
805	/* _cctx_init should be careful, as it could be called at almost any time */	1016	/* _cctx_init should be careful, as it could be called at almost any time */
806	/* during execution of a perl program */	1017	/* during execution of a perl program */
807	static void NOINLINE	1018	static void NOINLINE
808	prepare_cctx (pTHX_ coro_cctx *cctx)	1019	cctx_prepare (pTHX_ coro_cctx *cctx)
809	{	1020	{
810	dSP;	1021	dSP;
811	LOGOP myop;	1022	LOGOP myop;
812		1023
813	PL_top_env = &PL_start_env;	1024	PL_top_env = &PL_start_env;
…		…
831		1042
832	/*	1043	/*
833	* this is a _very_ stripped down perl interpreter ;)	1044	* this is a _very_ stripped down perl interpreter ;)
834	*/	1045	*/
835	static void	1046	static void
836	coro_run (void *arg)	1047	cctx_run (void *arg)
837	{	1048	{
838	dTHX;	1049	dTHX;
839		1050
840	/* coro_run is the alternative tail of transfer(), so unlock here. */	1051	/* cctx_run is the alternative tail of transfer(), so unlock here. */
841	UNLOCK;	1052	UNLOCK;
842		1053
843	/* we now skip the entersub that lead to transfer() */	1054	/* we now skip the entersub that lead to transfer() */
844	PL_op = PL_op->op_next;	1055	PL_op = PL_op->op_next;
845		1056
846	/* inject a fake subroutine call to cctx_init */	1057	/* inject a fake subroutine call to cctx_init */
847	prepare_cctx (aTHX_ (coro_cctx *)arg);	1058	cctx_prepare (aTHX_ (coro_cctx *)arg);
848		1059
849	/* somebody or something will hit me for both perl_run and PL_restartop */	1060	/* somebody or something will hit me for both perl_run and PL_restartop */
850	PL_restartop = PL_op;	1061	PL_restartop = PL_op;
851	perl_run (PL_curinterp);	1062	perl_run (PL_curinterp);
852		1063
…		…
871	++cctx_count;	1082	++cctx_count;
872		1083
873	Newz (0, cctx, 1, coro_cctx);	1084	Newz (0, cctx, 1, coro_cctx);
874		1085
875	#if HAVE_MMAP	1086	#if HAVE_MMAP
876
877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1087	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
878	/* mmap supposedly does allocate-on-write for us */	1088	/* mmap supposedly does allocate-on-write for us */
879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1089	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
880		1090
881	if (cctx->sptr != (void *)-1)	1091	if (cctx->sptr != (void *)-1)
…		…
902	stack_start = cctx->sptr;	1112	stack_start = cctx->sptr;
903	stack_size = cctx->ssize;	1113	stack_size = cctx->ssize;
904	}	1114	}
905		1115
906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1116	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1117	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
908		1118
909	return cctx;	1119	return cctx;
910	}	1120	}
911		1121
912	static void	1122	static void
…		…
929	Safefree (cctx->sptr);	1139	Safefree (cctx->sptr);
930		1140
931	Safefree (cctx);	1141	Safefree (cctx);
932	}	1142	}
933		1143
		1144	/* wether this cctx should be destructed */
		1145	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1146
934	static coro_cctx *	1147	static coro_cctx *
935	cctx_get (pTHX)	1148	cctx_get (pTHX)
936	{	1149	{
937	while (cctx_first)	1150	while (expect_true (cctx_first))
938	{	1151	{
939	coro_cctx *cctx = cctx_first;	1152	coro_cctx *cctx = cctx_first;
940	cctx_first = cctx->next;	1153	cctx_first = cctx->next;
941	--cctx_idle;	1154	--cctx_idle;
942		1155
943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1156	if (expect_true (!CCTX_EXPIRED (cctx)))
944	return cctx;	1157	return cctx;
945		1158
946	cctx_destroy (cctx);	1159	cctx_destroy (cctx);
947	}	1160	}
948		1161
…		…
951		1164
952	static void	1165	static void
953	cctx_put (coro_cctx *cctx)	1166	cctx_put (coro_cctx *cctx)
954	{	1167	{
955	/* free another cctx if overlimit */	1168	/* free another cctx if overlimit */
956	if (cctx_idle >= MAX_IDLE_CCTX)	1169	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
957	{	1170	{
958	coro_cctx *first = cctx_first;	1171	coro_cctx *first = cctx_first;
959	cctx_first = first->next;	1172	cctx_first = first->next;
960	--cctx_idle;	1173	--cctx_idle;
961		1174
…		…
967	cctx_first = cctx;	1180	cctx_first = cctx;
968	}	1181	}
969		1182
970	/** coroutine switching *****************************************************/	1183	/** coroutine switching *****************************************************/
971		1184
972	static void NOINLINE	1185	static void
973	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1186	transfer_check (pTHX_ struct coro *prev, struct coro *next)
974	{	1187	{
975	if (prev != next)	1188	if (expect_true (prev != next))
976	{	1189	{
977	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1190	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1191	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
979		1192
980	if (next->flags & CF_RUNNING)	1193	if (expect_false (next->flags & CF_RUNNING))
981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1194	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
982		1195
983	if (next->flags & CF_DESTROYED)	1196	if (expect_false (next->flags & CF_DESTROYED))
984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1197	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
985		1198
		1199	#if !PERL_VERSION_ATLEAST (5,10,0)
986	if (PL_lex_state != LEX_NOTPARSING)	1200	if (expect_false (PL_lex_state != LEX_NOTPARSING))
987	croak ("Coro::State::transfer called while parsing, but this is not supported");	1201	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1202	#endif
988	}	1203	}
989	}	1204	}
990		1205
991	/* always use the TRANSFER macro */	1206	/* always use the TRANSFER macro */
992	static void NOINLINE	1207	static void NOINLINE
993	transfer (pTHX_ struct coro *prev, struct coro *next)	1208	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
994	{	1209	{
995	dSTACKLEVEL;	1210	dSTACKLEVEL;
		1211	static volatile int has_throw;
996		1212
997	/* sometimes transfer is only called to set idle_sp */	1213	/* sometimes transfer is only called to set idle_sp */
998	if (!next)	1214	if (expect_false (!next))
999	{	1215	{
1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1216	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1001	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1217	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1002	}	1218	}
1003	else if (prev != next)	1219	else if (expect_true (prev != next))
1004	{	1220	{
1005	coro_cctx *prev__cctx;	1221	coro_cctx *prev__cctx;
1006		1222
1007	if (prev->flags & CF_NEW)	1223	if (expect_false (prev->flags & CF_NEW))
1008	{	1224	{
1009	/* create a new empty context */	1225	/* create a new empty context */
1010	Newz (0, prev->cctx, 1, coro_cctx);	1226	Newz (0, prev->cctx, 1, coro_cctx);
1011	prev->flags &= ~CF_NEW;	1227	prev->flags &= ~CF_NEW;
1012	prev->flags |= CF_RUNNING;	1228	prev->flags |= CF_RUNNING;
…		…
1015	prev->flags &= ~CF_RUNNING;	1231	prev->flags &= ~CF_RUNNING;
1016	next->flags |= CF_RUNNING;	1232	next->flags |= CF_RUNNING;
1017		1233
1018	LOCK;	1234	LOCK;
1019		1235
		1236	/* first get rid of the old state */
		1237	save_perl (aTHX_ prev);
		1238
1020	if (next->flags & CF_NEW)	1239	if (expect_false (next->flags & CF_NEW))
1021	{	1240	{
1022	/* need to start coroutine */	1241	/* need to start coroutine */
1023	next->flags &= ~CF_NEW;	1242	next->flags &= ~CF_NEW;
1024	/* first get rid of the old state */
1025	save_perl (aTHX_ prev);
1026	/* setup coroutine call */	1243	/* setup coroutine call */
1027	coro_setup (aTHX_ next);	1244	coro_setup (aTHX_ next);
1028	}	1245	}
1029	else	1246	else
1030	{
1031	/* coroutine already started */
1032	save_perl (aTHX_ prev);
1033	load_perl (aTHX_ next);	1247	load_perl (aTHX_ next);
1034	}
1035		1248
1036	prev__cctx = prev->cctx;	1249	prev__cctx = prev->cctx;
1037		1250
1038	/* possibly "free" the cctx */	1251	/* possibly "free" the cctx */
1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1252	if (expect_true (
		1253	prev__cctx->idle_sp == STACKLEVEL
		1254	&& !(prev__cctx->flags & CC_TRACE)
		1255	&& !force_cctx
		1256	))
1040	{	1257	{
1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1258	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1259	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1043		1260
1044	prev->cctx = 0;	1261	prev->cctx = 0;
1045		1262
		1263	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1264	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1265	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1266	if (!next->cctx)
		1267	next->cctx = cctx_get (aTHX);
		1268
1046	cctx_put (prev__cctx);	1269	cctx_put (prev__cctx);
1047	}	1270	}
1048		1271
1049	++next->usecount;	1272	++next->usecount;
1050		1273
1051	if (!next->cctx)	1274	if (expect_true (!next->cctx))
1052	next->cctx = cctx_get (aTHX);	1275	next->cctx = cctx_get (aTHX);
1053		1276
		1277	has_throw = !!next->throw;
		1278
1054	if (prev__cctx != next->cctx)	1279	if (expect_false (prev__cctx != next->cctx))
1055	{	1280	{
1056	prev__cctx->top_env = PL_top_env;	1281	prev__cctx->top_env = PL_top_env;
1057	PL_top_env = next->cctx->top_env;	1282	PL_top_env = next->cctx->top_env;
1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1283	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1059	}	1284	}
1060		1285
1061	free_coro_mortal (aTHX);	1286	free_coro_mortal (aTHX);
1062	UNLOCK;	1287	UNLOCK;
		1288
		1289	if (expect_false (has_throw))
		1290	{
		1291	struct coro *coro = SvSTATE (coro_current);
		1292
		1293	if (coro->throw)
		1294	{
		1295	SV *exception = coro->throw;
		1296	coro->throw = 0;
		1297	sv_setsv (ERRSV, exception);
		1298	croak (0);
		1299	}
		1300	}
1063	}	1301	}
1064	}	1302	}
1065		1303
1066	struct transfer_args	1304	struct transfer_args
1067	{	1305	{
1068	struct coro *prev, *next;	1306	struct coro *prev, *next;
1069	};	1307	};
1070		1308
1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1309	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1310	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1073		1311
1074	/** high level stuff ********************************************************/	1312	/** high level stuff ********************************************************/
1075		1313
1076	static int	1314	static int
…		…
1102	save_perl (aTHX_ &temp);	1340	save_perl (aTHX_ &temp);
1103	load_perl (aTHX_ coro);	1341	load_perl (aTHX_ coro);
1104		1342
1105	coro_destroy (aTHX_ coro);	1343	coro_destroy (aTHX_ coro);
1106		1344
1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1345	load_perl (aTHX_ &temp);
1108		1346
1109	coro->mainstack = 0;	1347	coro->slot = 0;
1110	}	1348	}
1111		1349
1112	cctx_destroy (coro->cctx);	1350	cctx_destroy (coro->cctx);
1113	SvREFCNT_dec (coro->args);	1351	SvREFCNT_dec (coro->args);
1114		1352
…		…
1170	{	1408	{
1171	dTHX;	1409	dTHX;
1172	struct transfer_args ta;	1410	struct transfer_args ta;
1173		1411
1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1412	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1175	TRANSFER (ta);	1413	TRANSFER (ta, 1);
1176	}	1414	}
1177		1415
1178	/** Coro ********************************************************************/	1416	/** Coro ********************************************************************/
1179		1417
1180	static void	1418	static void
…		…
1182	{	1420	{
1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1421	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1184	}	1422	}
1185		1423
1186	static SV *	1424	static SV *
1187	coro_deq (pTHX_ int min_prio)	1425	coro_deq (pTHX)
1188	{	1426	{
1189	int prio = PRIO_MAX - PRIO_MIN;	1427	int prio;
1190		1428
1191	min_prio -= PRIO_MIN;
1192	if (min_prio < 0)
1193	min_prio = 0;
1194
1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1429	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1196	if (AvFILLp (coro_ready [prio]) >= 0)	1430	if (AvFILLp (coro_ready [prio]) >= 0)
1197	return av_shift (coro_ready [prio]);	1431	return av_shift (coro_ready [prio]);
1198		1432
1199	return 0;	1433	return 0;
1200	}	1434	}
…		…
1202	static int	1436	static int
1203	api_ready (SV *coro_sv)	1437	api_ready (SV *coro_sv)
1204	{	1438	{
1205	dTHX;	1439	dTHX;
1206	struct coro *coro;	1440	struct coro *coro;
		1441	SV *sv_hook;
		1442	void (*xs_hook)(void);
1207		1443
1208	if (SvROK (coro_sv))	1444	if (SvROK (coro_sv))
1209	coro_sv = SvRV (coro_sv);	1445	coro_sv = SvRV (coro_sv);
1210		1446
1211	coro = SvSTATE (coro_sv);	1447	coro = SvSTATE (coro_sv);
…		…
1214	return 0;	1450	return 0;
1215		1451
1216	coro->flags |= CF_READY;	1452	coro->flags |= CF_READY;
1217		1453
1218	LOCK;	1454	LOCK;
		1455
		1456	sv_hook = coro_nready ? 0 : coro_readyhook;
		1457	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1458
1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1459	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1220	++coro_nready;	1460	++coro_nready;
		1461
1221	UNLOCK;	1462	UNLOCK;
		1463
		1464	if (sv_hook)
		1465	{
		1466	dSP;
		1467
		1468	ENTER;
		1469	SAVETMPS;
		1470
		1471	PUSHMARK (SP);
		1472	PUTBACK;
		1473	call_sv (sv_hook, G_DISCARD);
		1474	SPAGAIN;
		1475
		1476	FREETMPS;
		1477	LEAVE;
		1478	}
		1479
		1480	if (xs_hook)
		1481	xs_hook ();
1222		1482
1223	return 1;	1483	return 1;
1224	}	1484	}
1225		1485
1226	static int	1486	static int
…		…
1236	SV *prev_sv, *next_sv;	1496	SV *prev_sv, *next_sv;
1237		1497
1238	for (;;)	1498	for (;;)
1239	{	1499	{
1240	LOCK;	1500	LOCK;
1241	next_sv = coro_deq (aTHX_ PRIO_MIN);	1501	next_sv = coro_deq (aTHX);
1242		1502
1243	/* nothing to schedule: call the idle handler */	1503	/* nothing to schedule: call the idle handler */
1244	if (!next_sv)	1504	if (expect_false (!next_sv))
1245	{	1505	{
1246	dSP;	1506	dSP;
1247	UNLOCK;	1507	UNLOCK;
1248		1508
1249	ENTER;	1509	ENTER;
1250	SAVETMPS;	1510	SAVETMPS;
1251		1511
1252	PUSHMARK (SP);	1512	PUSHMARK (SP);
1253	PUTBACK;	1513	PUTBACK;
1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1514	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1515	SPAGAIN;
1255		1516
1256	FREETMPS;	1517	FREETMPS;
1257	LEAVE;	1518	LEAVE;
1258	continue;	1519	continue;
1259	}	1520	}
1260		1521
1261	ta->next = SvSTATE (next_sv);	1522	ta->next = SvSTATE (next_sv);
1262		1523
1263	/* cannot transfer to destroyed coros, skip and look for next */	1524	/* cannot transfer to destroyed coros, skip and look for next */
1264	if (ta->next->flags & CF_DESTROYED)	1525	if (expect_false (ta->next->flags & CF_DESTROYED))
1265	{	1526	{
1266	UNLOCK;	1527	UNLOCK;
1267	SvREFCNT_dec (next_sv);	1528	SvREFCNT_dec (next_sv);
1268	/* coro_nready is already taken care of by destroy */	1529	/* coro_nready is already taken care of by destroy */
1269	continue;	1530	continue;
…		…
1314	{	1575	{
1315	dTHX;	1576	dTHX;
1316	struct transfer_args ta;	1577	struct transfer_args ta;
1317		1578
1318	prepare_schedule (aTHX_ &ta);	1579	prepare_schedule (aTHX_ &ta);
1319	TRANSFER (ta);	1580	TRANSFER (ta, 1);
1320	}	1581	}
1321		1582
1322	static int	1583	static int
1323	api_cede (void)	1584	api_cede (void)
1324	{	1585	{
1325	dTHX;	1586	dTHX;
1326	struct transfer_args ta;	1587	struct transfer_args ta;
1327		1588
1328	prepare_cede (aTHX_ &ta);	1589	prepare_cede (aTHX_ &ta);
1329		1590
1330	if (ta.prev != ta.next)	1591	if (expect_true (ta.prev != ta.next))
1331	{	1592	{
1332	TRANSFER (ta);	1593	TRANSFER (ta, 1);
1333	return 1;	1594	return 1;
1334	}	1595	}
1335	else	1596	else
1336	return 0;	1597	return 0;
1337	}	1598	}
…		…
1342	dTHX;	1603	dTHX;
1343	struct transfer_args ta;	1604	struct transfer_args ta;
1344		1605
1345	if (prepare_cede_notself (aTHX_ &ta))	1606	if (prepare_cede_notself (aTHX_ &ta))
1346	{	1607	{
1347	TRANSFER (ta);	1608	TRANSFER (ta, 1);
1348	return 1;	1609	return 1;
1349	}	1610	}
1350	else	1611	else
1351	return 0;	1612	return 0;
1352	}	1613	}
…		…
1371	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1632	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1372		1633
1373	if (coro->flags & CF_RUNNING)	1634	if (coro->flags & CF_RUNNING)
1374	PL_runops = RUNOPS_DEFAULT;	1635	PL_runops = RUNOPS_DEFAULT;
1375	else	1636	else
1376	coro->runops = RUNOPS_DEFAULT;	1637	coro->slot->runops = RUNOPS_DEFAULT;
		1638	}
		1639	}
		1640
		1641	static int
		1642	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1643	{
		1644	AV *padlist;
		1645	AV *av = (AV *)mg->mg_obj;
		1646
		1647	abort ();
		1648
		1649	return 0;
		1650	}
		1651
		1652	static MGVTBL coro_gensub_vtbl = {
		1653	0, 0, 0, 0,
		1654	coro_gensub_free
		1655	};
		1656
		1657	/*****************************************************************************/
		1658	/* PerlIO::cede */
		1659
		1660	typedef struct
		1661	{
		1662	PerlIOBuf base;
		1663	NV next, every;
		1664	} PerlIOCede;
		1665
		1666	static IV
		1667	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1668	{
		1669	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1670
		1671	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1672	self->next = nvtime () + self->every;
		1673
		1674	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1675	}
		1676
		1677	static SV *
		1678	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1679	{
		1680	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1681
		1682	return newSVnv (self->every);
		1683	}
		1684
		1685	static IV
		1686	PerlIOCede_flush (pTHX_ PerlIO *f)
		1687	{
		1688	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1689	double now = nvtime ();
		1690
		1691	if (now >= self->next)
1377	}	1692	{
		1693	api_cede ();
		1694	self->next = now + self->every;
		1695	}
		1696
		1697	return PerlIOBuf_flush (aTHX_ f);
1378	}	1698	}
		1699
		1700	static PerlIO_funcs PerlIO_cede =
		1701	{
		1702	sizeof(PerlIO_funcs),
		1703	"cede",
		1704	sizeof(PerlIOCede),
		1705	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1706	PerlIOCede_pushed,
		1707	PerlIOBuf_popped,
		1708	PerlIOBuf_open,
		1709	PerlIOBase_binmode,
		1710	PerlIOCede_getarg,
		1711	PerlIOBase_fileno,
		1712	PerlIOBuf_dup,
		1713	PerlIOBuf_read,
		1714	PerlIOBuf_unread,
		1715	PerlIOBuf_write,
		1716	PerlIOBuf_seek,
		1717	PerlIOBuf_tell,
		1718	PerlIOBuf_close,
		1719	PerlIOCede_flush,
		1720	PerlIOBuf_fill,
		1721	PerlIOBase_eof,
		1722	PerlIOBase_error,
		1723	PerlIOBase_clearerr,
		1724	PerlIOBase_setlinebuf,
		1725	PerlIOBuf_get_base,
		1726	PerlIOBuf_bufsiz,
		1727	PerlIOBuf_get_ptr,
		1728	PerlIOBuf_get_cnt,
		1729	PerlIOBuf_set_ptrcnt,
		1730	};
		1731
1379		1732
1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1733	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1381		1734
1382	PROTOTYPES: DISABLE	1735	PROTOTYPES: DISABLE
1383		1736
…		…
1388	#endif	1741	#endif
1389	BOOT_PAGESIZE;	1742	BOOT_PAGESIZE;
1390		1743
1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1744	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1745	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1746
		1747	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1748	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1749	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1750
		1751	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1752	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1753	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1393		1754
1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1755	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1395		1756
1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1757	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1758	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1402	main_top_env = PL_top_env;	1763	main_top_env = PL_top_env;
1403		1764
1404	while (main_top_env->je_prev)	1765	while (main_top_env->je_prev)
1405	main_top_env = main_top_env->je_prev;	1766	main_top_env = main_top_env->je_prev;
1406		1767
1407	coroapi.ver = CORO_API_VERSION;	1768	coroapi.ver = CORO_API_VERSION;
		1769	coroapi.rev = CORO_API_REVISION;
1408	coroapi.transfer = api_transfer;	1770	coroapi.transfer = api_transfer;
		1771
		1772	{
		1773	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1774
		1775	if (!svp) croak ("Time::HiRes is required");
		1776	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1777
		1778	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1779	}
1409		1780
1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1781	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1411	}	1782	}
1412		1783
1413	SV *	1784	SV *
1414	new (char *klass, ...)	1785	new (char *klass, ...)
1415	CODE:	1786	CODE:
1416	{	1787	{
1417	struct coro *coro;	1788	struct coro *coro;
		1789	MAGIC *mg;
1418	HV *hv;	1790	HV *hv;
1419	int i;	1791	int i;
1420		1792
1421	Newz (0, coro, 1, struct coro);	1793	Newz (0, coro, 1, struct coro);
1422	coro->args = newAV ();	1794	coro->args = newAV ();
…		…
1425	if (coro_first) coro_first->prev = coro;	1797	if (coro_first) coro_first->prev = coro;
1426	coro->next = coro_first;	1798	coro->next = coro_first;
1427	coro_first = coro;	1799	coro_first = coro;
1428		1800
1429	coro->hv = hv = newHV ();	1801	coro->hv = hv = newHV ();
1430	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1802	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1803	mg->mg_flags |= MGf_DUP;
1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1804	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1432		1805
1433	av_extend (coro->args, items - 1);	1806	av_extend (coro->args, items - 1);
1434
1435	for (i = 1; i < items; i++)	1807	for (i = 1; i < items; i++)
1436	av_push (coro->args, newSVsv (ST (i)));	1808	av_push (coro->args, newSVsv (ST (i)));
1437	}	1809	}
1438	OUTPUT:	1810	OUTPUT:
1439	RETVAL	1811	RETVAL
…		…
1450	Coro::cede_notself = 4	1822	Coro::cede_notself = 4
1451	CODE:	1823	CODE:
1452	{	1824	{
1453	struct transfer_args ta;	1825	struct transfer_args ta;
1454		1826
		1827	PUTBACK;
1455	switch (ix)	1828	switch (ix)
1456	{	1829	{
1457	case 0:	1830	case 0:
1458	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1831	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1459	ta.next = 0;	1832	ta.next = 0;
…		…
1478	if (!prepare_cede_notself (aTHX_ &ta))	1851	if (!prepare_cede_notself (aTHX_ &ta))
1479	XSRETURN_EMPTY;	1852	XSRETURN_EMPTY;
1480		1853
1481	break;	1854	break;
1482	}	1855	}
		1856	SPAGAIN;
1483		1857
1484	BARRIER;	1858	BARRIER;
		1859	PUTBACK;
1485	TRANSFER (ta);	1860	TRANSFER (ta, 0);
1486		1861	SPAGAIN; /* might be the sp of a different coroutine now */
1487	if (GIMME_V != G_VOID && ta.next != ta.prev)	1862	/* be extra careful not to ever do anything after TRANSFER */
1488	XSRETURN_YES;
1489	}	1863	}
1490		1864
1491	bool	1865	bool
1492	_destroy (SV *coro_sv)	1866	_destroy (SV *coro_sv)
1493	CODE:	1867	CODE:
1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1868	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495	OUTPUT:	1869	OUTPUT:
1496	RETVAL	1870	RETVAL
1497		1871
1498	void	1872	void
1499	_exit (code)	1873	_exit (int code)
1500	int code
1501	PROTOTYPE: $	1874	PROTOTYPE: $
1502	CODE:	1875	CODE:
1503	_exit (code);	1876	_exit (code);
1504		1877
1505	int	1878	int
…		…
1539	call (Coro::State coro, SV *coderef)	1912	call (Coro::State coro, SV *coderef)
1540	ALIAS:	1913	ALIAS:
1541	eval = 1	1914	eval = 1
1542	CODE:	1915	CODE:
1543	{	1916	{
1544	if (coro->mainstack)	1917	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1545	{	1918	{
1546	struct coro temp;	1919	struct coro temp;
1547	Zero (&temp, 1, struct coro);
1548		1920
1549	if (!(coro->flags & CF_RUNNING))	1921	if (!(coro->flags & CF_RUNNING))
1550	{	1922	{
		1923	PUTBACK;
1551	save_perl (aTHX_ &temp);	1924	save_perl (aTHX_ &temp);
1552	load_perl (aTHX_ coro);	1925	load_perl (aTHX_ coro);
1553	}	1926	}
1554		1927
1555	{	1928	{
1556	dSP;	1929	dSP;
1557	ENTER;	1930	ENTER;
1558	SAVETMPS;	1931	SAVETMPS;
		1932	PUTBACK;
		1933	PUSHSTACK;
1559	PUSHMARK (SP);	1934	PUSHMARK (SP);
1560	PUTBACK;	1935
1561	if (ix)	1936	if (ix)
1562	eval_sv (coderef, 0);	1937	eval_sv (coderef, 0);
1563	else	1938	else
1564	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1939	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1940
		1941	POPSTACK;
1565	SPAGAIN;	1942	SPAGAIN;
1566	FREETMPS;	1943	FREETMPS;
1567	LEAVE;	1944	LEAVE;
1568	PUTBACK;	1945	PUTBACK;
1569	}	1946	}
1570		1947
1571	if (!(coro->flags & CF_RUNNING))	1948	if (!(coro->flags & CF_RUNNING))
1572	{	1949	{
1573	save_perl (aTHX_ coro);	1950	save_perl (aTHX_ coro);
1574	load_perl (aTHX_ &temp);	1951	load_perl (aTHX_ &temp);
		1952	SPAGAIN;
1575	}	1953	}
1576	}	1954	}
1577	}	1955	}
1578		1956
1579	SV *	1957	SV *
…		…
1591		1969
1592	void	1970	void
1593	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1971	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1594		1972
1595	SV *	1973	SV *
1596	has_stack (Coro::State coro)	1974	has_cctx (Coro::State coro)
1597	PROTOTYPE: $	1975	PROTOTYPE: $
1598	CODE:	1976	CODE:
1599	RETVAL = boolSV (!!coro->cctx);	1977	RETVAL = boolSV (!!coro->cctx);
1600	OUTPUT:	1978	OUTPUT:
1601	RETVAL	1979	RETVAL
…		…
1620	case 1: RETVAL = coro->usecount; break;	1998	case 1: RETVAL = coro->usecount; break;
1621	}	1999	}
1622	OUTPUT:	2000	OUTPUT:
1623	RETVAL	2001	RETVAL
1624		2002
		2003	void
		2004	force_cctx ()
		2005	CODE:
		2006	struct coro *coro = SvSTATE (coro_current);
		2007	coro->cctx->idle_sp = 0;
		2008
		2009	void
		2010	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2011	PROTOTYPE: $;$
		2012	CODE:
		2013	SvREFCNT_dec (self->throw);
		2014	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2015
		2016	void
		2017	swap_defsv (Coro::State self)
		2018	PROTOTYPE: $
		2019	ALIAS:
		2020	swap_defav = 1
		2021	CODE:
		2022	if (!self->slot)
		2023	croak ("cannot swap state with coroutine that has no saved state");
		2024	else
		2025	{
		2026	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2027	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2028
		2029	SV *tmp = *src; *src = *dst; *dst = tmp;
		2030	}
1625		2031
1626	MODULE = Coro::State PACKAGE = Coro	2032	MODULE = Coro::State PACKAGE = Coro
1627		2033
1628	BOOT:	2034	BOOT:
1629	{	2035	{
1630	int i;	2036	int i;
1631		2037
1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1634	av_async_pool = get_av ("Coro::async_pool", TRUE);	2038	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2039	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2040	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1635		2041
1636	coro_current = get_sv ("Coro::current", FALSE);	2042	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1637	SvREADONLY_on (coro_current);	2043	SvREADONLY_on (coro_current);
1638		2044
1639	coro_stash = gv_stashpv ("Coro", TRUE);	2045	coro_stash = gv_stashpv ("Coro", TRUE);
1640		2046
1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2047	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2048	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2049	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2050	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1647		2053
1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649	coro_ready[i] = newAV ();	2055	coro_ready[i] = newAV ();
1650		2056
1651	{	2057	{
1652	SV *sv = perl_get_sv("Coro::API", 1);	2058	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2059	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1653		2060
1654	coroapi.schedule = api_schedule;	2061	coroapi.schedule = api_schedule;
1655	coroapi.cede = api_cede;	2062	coroapi.cede = api_cede;
1656	coroapi.cede_notself = api_cede_notself;	2063	coroapi.cede_notself = api_cede_notself;
1657	coroapi.ready = api_ready;	2064	coroapi.ready = api_ready;
…		…
1668	void	2075	void
1669	_set_current (SV *current)	2076	_set_current (SV *current)
1670	PROTOTYPE: $	2077	PROTOTYPE: $
1671	CODE:	2078	CODE:
1672	SvREFCNT_dec (SvRV (coro_current));	2079	SvREFCNT_dec (SvRV (coro_current));
1673	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2080	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2081
		2082	void
		2083	_set_readyhook (SV *hook)
		2084	PROTOTYPE: $
		2085	CODE:
		2086	LOCK;
		2087	SvREFCNT_dec (coro_readyhook);
		2088	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2089	UNLOCK;
1674		2090
1675	int	2091	int
1676	prio (Coro::State coro, int newprio = 0)	2092	prio (Coro::State coro, int newprio = 0)
1677	ALIAS:	2093	ALIAS:
1678	nice = 1	2094	nice = 1
…		…
1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2137	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722	AV *invoke_av;	2138	AV *invoke_av;
1723	int i, len;	2139	int i, len;
1724		2140
1725	if (!invoke)	2141	if (!invoke)
		2142	{
		2143	SV *old = PL_diehook;
		2144	PL_diehook = 0;
		2145	SvREFCNT_dec (old);
1726	croak ("\3terminate\2\n");	2146	croak ("\3async_pool terminate\2\n");
		2147	}
1727		2148
1728	SvREFCNT_dec (coro->saved_deffh);	2149	SvREFCNT_dec (coro->saved_deffh);
1729	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2150	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1730		2151
1731	hv_store (hv, "desc", sizeof ("desc") - 1,	2152	hv_store (hv, "desc", sizeof ("desc") - 1,
1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2153	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1733		2154
1734	invoke_av = (AV *)SvRV (invoke);	2155	invoke_av = (AV *)SvRV (invoke);
…		…
1738		2159
1739	if (len > 0)	2160	if (len > 0)
1740	{	2161	{
1741	av_fill (defav, len - 1);	2162	av_fill (defav, len - 1);
1742	for (i = 0; i < len; ++i)	2163	for (i = 0; i < len; ++i)
1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2164	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1744	}	2165	}
1745		2166
1746	SvREFCNT_dec (invoke);	2167	SvREFCNT_dec (invoke);
1747	}	2168	}
1748		2169
…		…
1757	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2178	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1758	coro->saved_deffh = 0;	2179	coro->saved_deffh = 0;
1759		2180
1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2181	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1761	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2182	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2183	{
		2184	SV *old = PL_diehook;
		2185	PL_diehook = 0;
		2186	SvREFCNT_dec (old);
1762	croak ("\3terminate\2\n");	2187	croak ("\3async_pool terminate\2\n");
		2188	}
1763		2189
1764	av_clear (GvAV (PL_defgv));	2190	av_clear (GvAV (PL_defgv));
1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2191	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2192	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767		2193
…		…
1771	api_trace (coro_current, 0);	2197	api_trace (coro_current, 0);
1772		2198
1773	av_push (av_async_pool, newSVsv (coro_current));	2199	av_push (av_async_pool, newSVsv (coro_current));
1774	}	2200	}
1775		2201
		2202	#if 0
		2203
		2204	void
		2205	_generator_call (...)
		2206	PROTOTYPE: @
		2207	PPCODE:
		2208	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2209	xxxx
		2210	abort ();
		2211
		2212	SV *
		2213	gensub (SV *sub, ...)
		2214	PROTOTYPE: &;@
		2215	CODE:
		2216	{
		2217	struct coro *coro;
		2218	MAGIC *mg;
		2219	CV *xcv;
		2220	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2221	int i;
		2222
		2223	CvGV (ncv) = CvGV (cv);
		2224	CvFILE (ncv) = CvFILE (cv);
		2225
		2226	Newz (0, coro, 1, struct coro);
		2227	coro->args = newAV ();
		2228	coro->flags = CF_NEW;
		2229
		2230	av_extend (coro->args, items - 1);
		2231	for (i = 1; i < items; i++)
		2232	av_push (coro->args, newSVsv (ST (i)));
		2233
		2234	CvISXSUB_on (ncv);
		2235	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2236
		2237	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2238
		2239	CvXSUB (ncv) = CvXSUB (xcv);
		2240	CvANON_on (ncv);
		2241
		2242	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2243	RETVAL = newRV_noinc ((SV *)ncv);
		2244	}
		2245	OUTPUT:
		2246	RETVAL
		2247
		2248	#endif
		2249
1776		2250
1777	MODULE = Coro::State PACKAGE = Coro::AIO	2251	MODULE = Coro::State PACKAGE = Coro::AIO
1778		2252
1779	SV *	2253	void
1780	_get_state ()	2254	_get_state (SV *self)
1781	CODE:	2255	PPCODE:
1782	{	2256	{
1783	struct io_state *data;	2257	AV *defav = GvAV (PL_defgv);
1784		2258	AV *av = newAV ();
		2259	int i;
1785	RETVAL = newSV (sizeof (struct io_state));	2260	SV *data_sv = newSV (sizeof (struct io_state));
1786	data = (struct io_state *)SvPVX (RETVAL);	2261	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1787	SvCUR_set (RETVAL, sizeof (struct io_state));	2262	SvCUR_set (data_sv, sizeof (struct io_state));
1788	SvPOK_only (RETVAL);	2263	SvPOK_only (data_sv);
1789		2264
1790	data->errorno = errno;	2265	data->errorno = errno;
1791	data->laststype = PL_laststype;	2266	data->laststype = PL_laststype;
1792	data->laststatval = PL_laststatval;	2267	data->laststatval = PL_laststatval;
1793	data->statcache = PL_statcache;	2268	data->statcache = PL_statcache;
		2269
		2270	av_extend (av, AvFILLp (defav) + 1 + 1);
		2271
		2272	for (i = 0; i <= AvFILLp (defav); ++i)
		2273	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2274
		2275	av_push (av, data_sv);
		2276
		2277	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2278
		2279	api_ready (self);
1794	}	2280	}
1795	OUTPUT:
1796	RETVAL
1797		2281
1798	void	2282	void
1799	_set_state (char *data_)	2283	_set_state (SV *state)
1800	PROTOTYPE: $	2284	PROTOTYPE: $
1801	CODE:	2285	PPCODE:
1802	{	2286	{
1803	struct io_state *data = (void *)data_;	2287	AV *av = (AV *)SvRV (state);
		2288	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2289	int i;
1804		2290
1805	errno = data->errorno;	2291	errno = data->errorno;
1806	PL_laststype = data->laststype;	2292	PL_laststype = data->laststype;
1807	PL_laststatval = data->laststatval;	2293	PL_laststatval = data->laststatval;
1808	PL_statcache = data->statcache;	2294	PL_statcache = data->statcache;
1809	}
1810		2295
		2296	EXTEND (SP, AvFILLp (av));
		2297	for (i = 0; i < AvFILLp (av); ++i)
		2298	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2299	}
		2300
		2301
		2302	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2303
		2304	BOOT:
		2305	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2306
		2307	SV *
		2308	_schedule (...)
		2309	PROTOTYPE: @
		2310	CODE:
		2311	{
		2312	static int incede;
		2313
		2314	api_cede_notself ();
		2315
		2316	++incede;
		2317	while (coro_nready >= incede && api_cede ())
		2318	;
		2319
		2320	sv_setsv (sv_activity, &PL_sv_undef);
		2321	if (coro_nready >= incede)
		2322	{
		2323	PUSHMARK (SP);
		2324	PUTBACK;
		2325	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2326	SPAGAIN;
		2327	}
		2328
		2329	--incede;
		2330	}
		2331
		2332
		2333	MODULE = Coro::State PACKAGE = PerlIO::cede
		2334
		2335	BOOT:
		2336	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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