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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC vs.
Revision 1.238 by root, Sat May 31 12:10:55 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"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	# define setjmp _setjmp // deep magic, don't ask
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
14		24
15	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
16	# include <unistd.h>	26	# include <unistd.h>
17	# include <sys/mman.h>	27	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
72	# endif	82	# endif
73	#endif	83	#endif
74		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
75	/* 5.8.7 */	98	/* 5.8.7 */
76	#ifndef SvRV_set	99	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	101	#endif
79		102
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		122
100	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	127	#else
104	# define attribute(x)	128	# define attribute(x)
105	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
106	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
107		135
108	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
109		137
110	#include "CoroAPI.h"	138	#include "CoroAPI.h"
111		139
…		…
130	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	163	static volatile SV *coro_mortal; /* will be freed after next transfer */
		164
		165	static GV *irsgv; /* $/ */
		166	static GV *stdoutgv; /* *STDOUT */
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV *hv_sig; /* %SIG */
136		170
137	/* async_pool helper stuff */	171	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	172	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	173	static SV *sv_pool_size;
140	static AV *av_async_pool;	174	static AV *av_async_pool;
141		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
		178
142	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
144		181
145	enum {	182	enum {
146	CC_MAPPED = 0x01,	183	CC_MAPPED = 0x01,
147	CC_TRACE = 0x02,
148	CC_NOREUSE = 0x04, /* throw this away after tracing */	184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
149	};	189	};
150		190
151	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
152	typedef struct coro_cctx {	192	typedef struct coro_cctx {
153	struct coro_cctx *next;	193	struct coro_cctx *next;
…		…
173	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
174	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
176	};	216	};
177		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		230
178	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
179	struct coro {	232	struct coro {
180	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
181	coro_cctx *cctx;	234	coro_cctx *cctx;
182		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
183	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
184	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
185	int refcnt;
186	int save; /* CORO_SAVE flags */
187	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
188		244
189	/* optionally saved, might be zero */	245	/* statistics */
190	AV *defav; /* @_ */	246	int usecount; /* number of transfers to this coro */
191	SV *defsv; /* $_ */
192	SV *errsv; /* $@ */
193	GV *deffh; /* default filehandle */
194	SV *irssv; /* $/ */
195	SV *irssv_sv; /* real $/ cache */
196
197	#define VAR(name,type) type name;
198	# include "state.h"
199	#undef VAR
200		247
201	/* coro process data */	248	/* coro process data */
202	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
203		254
204	/* linked list */	255	/* linked list */
205	struct coro *next, *prev;	256	struct coro *next, *prev;
206	HV *hv; /* the perl hash associated with this coro, if any */
207	};	257	};
208		258
209	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
210	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
211		261
…		…
218	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
219	#define PRIO_MIN -4	269	#define PRIO_MIN -4
220		270
221	/* for Coro.pm */	271	/* for Coro.pm */
222	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
223	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
224	static int coro_nready;	275	static int coro_nready;
225	static struct coro *coro_first;	276	static struct coro *coro_first;
226		277
227	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
228		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
		290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
		309
229	static AV *	310	static AV *
230	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
231	{	312	{
232	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
233	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
234		315
235	newpadlist = newAV ();	316	newpadlist = newAV ();
236	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
237	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
238	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
239	#else	320	#else
240	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
241	#endif	322	#endif
242	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
280		361
281	/* casting is fun. */	362	/* casting is fun. */
282	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
283	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
284		365
285	SvREFCNT_dec (av);
286
287	return 0;	366	return 0;
288	}	367	}
289		368
290	#define PERL_MAGIC_coro PERL_MAGIC_ext	369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		370	#define CORO_MAGIC_type_state PERL_MAGIC_ext
291		371
292	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	372	static MGVTBL coro_cv_vtbl = {
		373	0, 0, 0, 0,
		374	coro_cv_free
		375	};
293		376
294	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
295	SvMAGIC (cv) \	378	SvMAGIC (sv) \
296	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
297	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
299	: 0	382	: 0
		383
		384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		386
		387	static struct coro *
		388	SvSTATE_ (pTHX_ SV *coro)
		389	{
		390	HV *stash;
		391	MAGIC *mg;
		392
		393	if (SvROK (coro))
		394	coro = SvRV (coro);
		395
		396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		397	croak ("Coro::State object required");
		398
		399	stash = SvSTASH (coro);
		400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		401	{
		402	/* very slow, but rare, check */
		403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		404	croak ("Coro::State object required");
		405	}
		406
		407	mg = CORO_MAGIC_state (coro);
		408	return (struct coro *)mg->mg_ptr;
		409	}
		410
		411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
300		412
301	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
302	static void	414	static void
303	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
304	{	416	{
305	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
306	AV *av;	418	AV *av;
307		419
308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
310	else	422	else
311	{	423	{
312	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
313	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
322	}	434	}
323		435
324	static void	436	static void
325	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
326	{	438	{
327	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
328	AV *av;	440	AV *av;
329		441
330	if (!mg)	442	if (expect_false (!mg))
331	{	443	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
332	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
333	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
334	mg->mg_virtual = &vtbl_coro;
335	mg->mg_obj = (SV *)newAV ();
336	}
337		444
338	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
339		446
340	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
341	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
342		449
343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
344	}	451	}
345		452
346	/** load & save, init *******************************************************/	453	/** load & save, init *******************************************************/
347
348	#define SB do {
349	#define SE } while (0)
350
351	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
352		454
353	static void	455	static void
354	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
355	{	457	{
		458	perl_slots *slot = c->slot;
		459	c->slot = 0;
		460
		461	PL_mainstack = c->mainstack;
		462
		463	GvSV (PL_defgv) = slot->defsv;
		464	GvAV (PL_defgv) = slot->defav;
		465	GvSV (PL_errgv) = slot->errsv;
		466	GvSV (irsgv) = slot->irsgv;
		467
356	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
357	# include "state.h"	469	# include "state.h"
358	#undef VAR	470	#undef VAR
359
360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
363	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
364
365	if (c->irssv)
366	{
367	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
368	{
369	SvREFCNT_dec (c->irssv);
370	c->irssv = 0;
371	}
372	else
373	{
374	REPLACE_SV (PL_rs, c->irssv);
375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
376	sv_setsv (c->irssv_sv, PL_rs);
377	}
378	}
379		471
380	{	472	{
381	dSP;	473	dSP;
		474
382	CV *cv;	475	CV *cv;
383		476
384	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
385	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
386	{	479	{
387	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
388	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
389	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
390	}	483	}
…		…
409		502
410	XPUSHs (Nullsv);	503	XPUSHs (Nullsv);
411	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
412	for (;;)	505	for (;;)
413	{	506	{
414	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
415	{	508	{
416	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
417		510
418	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	511	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
419	{	512	{
420	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
421		514
422	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
423	{	516	{
424	EXTEND (SP, 3);	517	EXTEND (SP, 3);
425	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
427	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
428		521
429	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
430	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
431	}	524	}
432	}	525	}
433	}	526	}
434		527
435	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
436	break;	529	break;
437		530
438	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
439	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
440	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
441	}	534	}
442		535
443	PUTBACK;	536	PUTBACK;
444	}	537	}
445		538
446	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	539	/* allocate some space on the context stack for our purposes */
447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
448	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
449	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
450	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	543	if (SLOT_COUNT >= 3) CXINC;
		544	{
		545	int i;
		546	for (i = 3; i < SLOT_COUNT; ++i)
		547	CXINC;
		548	}
		549	cxstack_ix -= SLOT_COUNT; /* undo allocation */
451		550
		551	c->mainstack = PL_mainstack;
		552
		553	{
		554	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		555
		556	slot->defav = GvAV (PL_defgv);
		557	slot->defsv = DEFSV;
		558	slot->errsv = ERRSV;
		559	slot->irsgv = GvSV (irsgv);
		560
452	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
453	# include "state.h"	562	# include "state.h"
454	#undef VAR	563	#undef VAR
		564	}
455	}	565	}
456		566
457	/*	567	/*
458	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
464	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
465	#else	575	#else
466	static void	576	static void
467	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
468	{	578	{
469	PL_curstackinfo = new_stackinfo(64, 6);	579	PL_curstackinfo = new_stackinfo(32, 8);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		583
474	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		587
478	New(50,PL_tmps_stack,64,SV*);	588	New(50,PL_tmps_stack,32,SV*);
479	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
481	PL_tmps_max = 64;	591	PL_tmps_max = 32;
482		592
483	New(54,PL_markstack,16,I32);	593	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	595	PL_markstack_max = PL_markstack + 16;
486		596
487	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
489	#endif	599	#endif
490		600
491	New(54,PL_scopestack,16,I32);	601	New(54,PL_scopestack,8,I32);
492	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	603	PL_scopestack_max = 8;
494		604
495	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
496	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
497	PL_savestack_max = 64;	607	PL_savestack_max = 24;
498		608
499	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
500	New(54,PL_retstack,4,OP*);	610	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
502	PL_retstack_max = 4;	612	PL_retstack_max = 4;
503	#endif	613	#endif
504	}	614	}
…		…
508	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
509	*/	619	*/
510	static void	620	static void
511	coro_destroy_stacks (pTHX)	621	coro_destroy_stacks (pTHX)
512	{	622	{
513	if (!IN_DESTRUCT)
514	{
515	/* restore all saved variables and stuff */
516	LEAVE_SCOPE (0);
517	assert (PL_tmps_floor == -1);
518
519	/* free all temporaries */
520	FREETMPS;
521	assert (PL_tmps_ix == -1);
522
523	/* unwind all extra stacks */
524	POPSTACK_TO (PL_mainstack);
525
526	/* unwind main stack */
527	dounwind (-1);
528	}
529
530	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
531	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
532		625
533	while (PL_curstackinfo)	626	while (PL_curstackinfo)
534	{	627	{
…		…
544		637
545	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
546	Safefree (PL_markstack);	639	Safefree (PL_markstack);
547	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
548	Safefree (PL_savestack);	641	Safefree (PL_savestack);
549	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
550	Safefree (PL_retstack);	643	Safefree (PL_retstack);
551	#endif	644	#endif
552	}	645	}
553		646
554	static size_t	647	static size_t
555	coro_rss (struct coro *coro)	648	coro_rss (pTHX_ struct coro *coro)
556	{	649	{
557	size_t rss = sizeof (coro);	650	size_t rss = sizeof (*coro);
558		651
559	if (coro->mainstack)	652	if (coro->mainstack)
560	{	653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
561	if (coro->flags & CF_RUNNING)	657	if (coro->flags & CF_RUNNING)
562	{	658	{
		659	slot = &tmp_slot;
		660
563	#define VAR(name,type)coro->name = PL_ ## name;	661	#define VAR(name,type) slot->name = PL_ ## name;
564	# include "state.h"	662	# include "state.h"
565	#undef VAR	663	#undef VAR
566	}	664	}
		665	else
		666	slot = coro->slot;
567		667
568	rss += sizeof (coro->curstackinfo);	668	rss += sizeof (slot->curstackinfo);
569	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
571	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
572	rss += coro->tmps_max * sizeof (SV *);	671	rss += slot->tmps_max * sizeof (SV *);
573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
574	rss += coro->scopestack_max * sizeof (I32);	673	rss += slot->scopestack_max * sizeof (I32);
575	rss += coro->savestack_max * sizeof (ANY);	674	rss += slot->savestack_max * sizeof (ANY);
576		675
577	#if !PERL_VERSION_ATLEAST (5,9,0)	676	#if !PERL_VERSION_ATLEAST (5,10,0)
578	rss += coro->retstack_max * sizeof (OP *);	677	rss += slot->retstack_max * sizeof (OP *);
579	#endif	678	#endif
580	}	679	}
581		680
582	return rss;	681	return rss;
583	}	682	}
584		683
585	/** coroutine stack handling ************************************************/	684	/** coroutine stack handling ************************************************/
586		685
		686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		688
		689	/* apparently < 5.8.8 */
		690	#undef MgPV_nolen_const
		691	#ifndef MgPV_nolen_const
		692	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		693	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \
		694	(const char*)(mg)->mg_ptr)
		695	#endif
		696
		697	/*
		698	* This overrides the default magic get method of %SIG elements.
		699	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		700	* and instead of tryign to save and restore the hash elements, we just provide
		701	* readback here.
		702	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		703	* not expecting this to actually change the hook. This is a potential problem
		704	* when a schedule happens then, but we ignore this.
		705	*/
		706	static int
		707	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		708	{
		709	const char *s = MgPV_nolen_const (mg);
		710
		711	if (*s == '_')
		712	{
		713	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		714	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		715	}
		716
		717	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		718	}
		719
		720	static int
		721	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		722	{
		723	const char *s = MgPV_nolen_const (mg);
		724
		725	if (*s == '_')
		726	{
		727	SV **svp = 0;
		728
		729	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		730	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		731
		732	if (svp)
		733	{
		734	SV *old = *svp;
		735	*svp = newSVsv (sv);
		736	SvREFCNT_dec (old);
		737	return 0;
		738	}
		739	}
		740
		741	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		742	}
		743
587	static void	744	static void
588	setup_coro (pTHX_ struct coro *coro)	745	coro_setup (pTHX_ struct coro *coro)
589	{	746	{
590	/*	747	/*
591	* emulate part of the perl startup here.	748	* emulate part of the perl startup here.
592	*/	749	*/
593	coro_init_stacks (aTHX);	750	coro_init_stacks (aTHX);
594		751
		752	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	753	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	754	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	755	PL_comppad = 0;
598	PL_curpm = 0;	756	PL_curpm = 0;
		757	PL_curpad = 0;
599	PL_localizing = 0;	758	PL_localizing = 0;
600	PL_dirty = 0;	759	PL_dirty = 0;
601	PL_restartop = 0;	760	PL_restartop = 0;
		761	#if PERL_VERSION_ATLEAST (5,10,0)
		762	PL_parser = 0;
		763	#endif
		764
		765	/* recreate the die/warn hooks */
		766	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		767	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		768
		769	GvSV (PL_defgv) = newSV (0);
		770	GvAV (PL_defgv) = coro->args; coro->args = 0;
		771	GvSV (PL_errgv) = newSV (0);
		772	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		773	PL_rs = newSVsv (GvSV (irsgv));
		774	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
602		775
603	{	776	{
604	dSP;	777	dSP;
605	LOGOP myop;	778	LOGOP myop;
606		779
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = coro->args; coro->args = 0;
609
610	Zero (&myop, 1, LOGOP);	780	Zero (&myop, 1, LOGOP);
611	myop.op_next = Nullop;	781	myop.op_next = Nullop;
612	myop.op_flags = OPf_WANT_VOID;	782	myop.op_flags = OPf_WANT_VOID;
613		783
614	PUSHMARK (SP);	784	PUSHMARK (SP);
615	XPUSHs (av_shift (GvAV (PL_defgv)));	785	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
616	PUTBACK;	786	PUTBACK;
617	PL_op = (OP *)&myop;	787	PL_op = (OP *)&myop;
618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	788	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
619	SPAGAIN;	789	SPAGAIN;
620	}	790	}
621		791
622	ENTER; /* necessary e.g. for dounwind */	792	/* this newly created coroutine might be run on an existing cctx which most
		793	* likely was suspended in set_stacklevel, called from entersub.
		794	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		795	* so we ENTER here for symmetry
		796	*/
		797	ENTER;
		798	}
		799
		800	static void
		801	coro_destroy (pTHX_ struct coro *coro)
		802	{
		803	if (!IN_DESTRUCT)
		804	{
		805	/* restore all saved variables and stuff */
		806	LEAVE_SCOPE (0);
		807	assert (PL_tmps_floor == -1);
		808
		809	/* free all temporaries */
		810	FREETMPS;
		811	assert (PL_tmps_ix == -1);
		812
		813	/* unwind all extra stacks */
		814	POPSTACK_TO (PL_mainstack);
		815
		816	/* unwind main stack */
		817	dounwind (-1);
		818	}
		819
		820	SvREFCNT_dec (GvSV (PL_defgv));
		821	SvREFCNT_dec (GvAV (PL_defgv));
		822	SvREFCNT_dec (GvSV (PL_errgv));
		823	SvREFCNT_dec (PL_defoutgv);
		824	SvREFCNT_dec (PL_rs);
		825	SvREFCNT_dec (GvSV (irsgv));
		826
		827	SvREFCNT_dec (PL_diehook);
		828	SvREFCNT_dec (PL_warnhook);
		829
		830	SvREFCNT_dec (coro->saved_deffh);
		831	SvREFCNT_dec (coro->throw);
		832
		833	coro_destroy_stacks (aTHX);
623	}	834	}
624		835
625	static void	836	static void
626	free_coro_mortal (pTHX)	837	free_coro_mortal (pTHX)
627	{	838	{
628	if (coro_mortal)	839	if (expect_true (coro_mortal))
629	{	840	{
630	SvREFCNT_dec (coro_mortal);	841	SvREFCNT_dec (coro_mortal);
631	coro_mortal = 0;	842	coro_mortal = 0;
632	}	843	}
633	}	844	}
634		845
635	static void
636	do_trace (pTHX)
637	{
638	if (PL_curcop != &PL_compiling)
639	{
640	runops_proc_t old_runops = PL_runops;
641	dSP;
642	ENTER;
643	SAVETMPS;
644	PUSHMARK (SP);
645	PUTBACK;
646	PL_runops = RUNOPS_DEFAULT;
647	call_pv ("Coro::_do_trace", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD | G_NOARGS);
648	PL_runops = old_runops;
649	SPAGAIN;
650	FREETMPS;
651	LEAVE;
652	PUTBACK;
653	}
654	}
655
656	static int	846	static int
657	runops_coro (pTHX)	847	runops_trace (pTHX)
658	{	848	{
659	COP *oldcop = 0;	849	COP *oldcop = 0;
		850	int oldcxix = -2;
		851	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		852	coro_cctx *cctx = coro->cctx;
660		853
661	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	854	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
662	{	855	{
663	PERL_ASYNC_CHECK ();	856	PERL_ASYNC_CHECK ();
664		857
665	if (oldcop != PL_curcop)	858	if (cctx->flags & CC_TRACE_ALL)
666	{	859	{
		860	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		861	{
		862	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		863	SV **bot, **top;
		864	AV *av = newAV (); /* return values */
		865	SV **cb;
		866	dSP;
		867
		868	GV *gv = CvGV (cx->blk_sub.cv);
		869	SV *fullname = sv_2mortal (newSV (0));
		870	if (isGV (gv))
		871	gv_efullname3 (fullname, gv, 0);
		872
		873	bot = PL_stack_base + cx->blk_oldsp + 1;
		874	top = cx->blk_gimme == G_ARRAY ? SP + 1
		875	: cx->blk_gimme == G_SCALAR ? bot + 1
		876	: bot;
		877
		878	av_extend (av, top - bot);
		879	while (bot < top)
		880	av_push (av, SvREFCNT_inc (*bot++));
		881
		882	PL_runops = RUNOPS_DEFAULT;
		883	ENTER;
		884	SAVETMPS;
		885	EXTEND (SP, 3);
		886	PUSHMARK (SP);
		887	PUSHs (&PL_sv_no);
		888	PUSHs (fullname);
		889	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		890	PUTBACK;
		891	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		892	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		893	SPAGAIN;
		894	FREETMPS;
		895	LEAVE;
		896	PL_runops = runops_trace;
		897	}
		898
		899	if (oldcop != PL_curcop)
		900	{
667	oldcop = PL_curcop;	901	oldcop = PL_curcop;
668	do_trace (aTHX);	902
		903	if (PL_curcop != &PL_compiling)
		904	{
		905	SV **cb;
		906
		907	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		908	{
		909	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		910
		911	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		912	{
		913	runops_proc_t old_runops = PL_runops;
		914	dSP;
		915	GV *gv = CvGV (cx->blk_sub.cv);
		916	SV *fullname = sv_2mortal (newSV (0));
		917
		918	if (isGV (gv))
		919	gv_efullname3 (fullname, gv, 0);
		920
		921	PL_runops = RUNOPS_DEFAULT;
		922	ENTER;
		923	SAVETMPS;
		924	EXTEND (SP, 3);
		925	PUSHMARK (SP);
		926	PUSHs (&PL_sv_yes);
		927	PUSHs (fullname);
		928	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		929	PUTBACK;
		930	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		931	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		932	SPAGAIN;
		933	FREETMPS;
		934	LEAVE;
		935	PL_runops = runops_trace;
		936	}
		937
		938	oldcxix = cxstack_ix;
		939	}
		940
		941	if (cctx->flags & CC_TRACE_LINE)
		942	{
		943	dSP;
		944
		945	PL_runops = RUNOPS_DEFAULT;
		946	ENTER;
		947	SAVETMPS;
		948	EXTEND (SP, 3);
		949	PL_runops = RUNOPS_DEFAULT;
		950	PUSHMARK (SP);
		951	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		952	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		953	PUTBACK;
		954	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		955	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		956	SPAGAIN;
		957	FREETMPS;
		958	LEAVE;
		959	PL_runops = runops_trace;
		960	}
		961	}
		962	}
669	}	963	}
670	}	964	}
671		965
672	TAINT_NOT;	966	TAINT_NOT;
673	return 0;	967	return 0;
…		…
675		969
676	/* inject a fake call to Coro::State::_cctx_init into the execution */	970	/* inject a fake call to Coro::State::_cctx_init into the execution */
677	/* _cctx_init should be careful, as it could be called at almost any time */	971	/* _cctx_init should be careful, as it could be called at almost any time */
678	/* during execution of a perl program */	972	/* during execution of a perl program */
679	static void NOINLINE	973	static void NOINLINE
680	prepare_cctx (pTHX_ coro_cctx *cctx)	974	cctx_prepare (pTHX_ coro_cctx *cctx)
681	{	975	{
682	dSP;	976	dSP;
683	LOGOP myop;	977	LOGOP myop;
684		978
685	PL_top_env = &PL_start_env;	979	PL_top_env = &PL_start_env;
686		980
687	if (cctx->flags & CC_TRACE)	981	if (cctx->flags & CC_TRACE)
688	PL_runops = runops_coro;	982	PL_runops = runops_trace;
689		983
690	Zero (&myop, 1, LOGOP);	984	Zero (&myop, 1, LOGOP);
691	myop.op_next = PL_op;	985	myop.op_next = PL_op;
692	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	986	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
693		987
…		…
703		997
704	/*	998	/*
705	* this is a _very_ stripped down perl interpreter ;)	999	* this is a _very_ stripped down perl interpreter ;)
706	*/	1000	*/
707	static void	1001	static void
708	coro_run (void *arg)	1002	cctx_run (void *arg)
709	{	1003	{
710	dTHX;	1004	dTHX;
711		1005
712	/* coro_run is the alternative tail of transfer(), so unlock here. */	1006	/* cctx_run is the alternative tail of transfer(), so unlock here. */
713	UNLOCK;	1007	UNLOCK;
714		1008
715	/* we now skip the entersub that lead to transfer() */	1009	/* we now skip the entersub that lead to transfer() */
716	PL_op = PL_op->op_next;	1010	PL_op = PL_op->op_next;
717		1011
718	/* inject a fake subroutine call to cctx_init */	1012	/* inject a fake subroutine call to cctx_init */
719	prepare_cctx (aTHX_ (coro_cctx *)arg);	1013	cctx_prepare (aTHX_ (coro_cctx *)arg);
720		1014
721	/* somebody or something will hit me for both perl_run and PL_restartop */	1015	/* somebody or something will hit me for both perl_run and PL_restartop */
722	PL_restartop = PL_op;	1016	PL_restartop = PL_op;
723	perl_run (PL_curinterp);	1017	perl_run (PL_curinterp);
724		1018
…		…
743	++cctx_count;	1037	++cctx_count;
744		1038
745	Newz (0, cctx, 1, coro_cctx);	1039	Newz (0, cctx, 1, coro_cctx);
746		1040
747	#if HAVE_MMAP	1041	#if HAVE_MMAP
748
749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1042	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
750	/* mmap supposedly does allocate-on-write for us */	1043	/* mmap supposedly does allocate-on-write for us */
751	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1044	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
752		1045
753	if (cctx->sptr != (void *)-1)	1046	if (cctx->sptr != (void *)-1)
…		…
774	stack_start = cctx->sptr;	1067	stack_start = cctx->sptr;
775	stack_size = cctx->ssize;	1068	stack_size = cctx->ssize;
776	}	1069	}
777		1070
778	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1071	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
779	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1072	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
780		1073
781	return cctx;	1074	return cctx;
782	}	1075	}
783		1076
784	static void	1077	static void
…		…
801	Safefree (cctx->sptr);	1094	Safefree (cctx->sptr);
802		1095
803	Safefree (cctx);	1096	Safefree (cctx);
804	}	1097	}
805		1098
		1099	/* wether this cctx should be destructed */
		1100	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1101
806	static coro_cctx *	1102	static coro_cctx *
807	cctx_get (pTHX)	1103	cctx_get (pTHX)
808	{	1104	{
809	while (cctx_first)	1105	while (expect_true (cctx_first))
810	{	1106	{
811	coro_cctx *cctx = cctx_first;	1107	coro_cctx *cctx = cctx_first;
812	cctx_first = cctx->next;	1108	cctx_first = cctx->next;
813	--cctx_idle;	1109	--cctx_idle;
814		1110
815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1111	if (expect_true (!CCTX_EXPIRED (cctx)))
816	return cctx;	1112	return cctx;
817		1113
818	cctx_destroy (cctx);	1114	cctx_destroy (cctx);
819	}	1115	}
820		1116
…		…
823		1119
824	static void	1120	static void
825	cctx_put (coro_cctx *cctx)	1121	cctx_put (coro_cctx *cctx)
826	{	1122	{
827	/* free another cctx if overlimit */	1123	/* free another cctx if overlimit */
828	if (cctx_idle >= MAX_IDLE_CCTX)	1124	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
829	{	1125	{
830	coro_cctx *first = cctx_first;	1126	coro_cctx *first = cctx_first;
831	cctx_first = first->next;	1127	cctx_first = first->next;
832	--cctx_idle;	1128	--cctx_idle;
833		1129
…		…
839	cctx_first = cctx;	1135	cctx_first = cctx;
840	}	1136	}
841		1137
842	/** coroutine switching *****************************************************/	1138	/** coroutine switching *****************************************************/
843		1139
844	/* never call directly, always through the coro_state_transfer global variable */	1140	static void
		1141	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1142	{
		1143	if (expect_true (prev != next))
		1144	{
		1145	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1146	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1147
		1148	if (expect_false (next->flags & CF_RUNNING))
		1149	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1150
		1151	if (expect_false (next->flags & CF_DESTROYED))
		1152	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1153
		1154	#if !PERL_VERSION_ATLEAST (5,10,0)
		1155	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1156	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1157	#endif
		1158	}
		1159	}
		1160
		1161	/* always use the TRANSFER macro */
845	static void NOINLINE	1162	static void NOINLINE
846	transfer (pTHX_ struct coro *prev, struct coro *next)	1163	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
847	{	1164	{
848	dSTACKLEVEL;	1165	dSTACKLEVEL;
		1166	static volatile int has_throw;
849		1167
850	/* sometimes transfer is only called to set idle_sp */	1168	/* sometimes transfer is only called to set idle_sp */
851	if (!next)	1169	if (expect_false (!next))
852	{	1170	{
853	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1171	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
854	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1172	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
855	}	1173	}
856	else if (prev != next)	1174	else if (expect_true (prev != next))
857	{	1175	{
858	coro_cctx *prev__cctx;	1176	coro_cctx *prev__cctx;
859		1177
860	if (prev->flags & CF_NEW)	1178	if (expect_false (prev->flags & CF_NEW))
861	{	1179	{
862	/* create a new empty context */	1180	/* create a new empty context */
863	Newz (0, prev->cctx, 1, coro_cctx);	1181	Newz (0, prev->cctx, 1, coro_cctx);
864	prev->flags &= ~CF_NEW;	1182	prev->flags &= ~CF_NEW;
865	prev->flags |= CF_RUNNING;	1183	prev->flags |= CF_RUNNING;
866	}	1184	}
867		1185
868	/*TODO: must not croak here */
869	if (!prev->flags & CF_RUNNING)
870	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
871
872	if (next->flags & CF_RUNNING)
873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
874
875	if (next->flags & CF_DESTROYED)
876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
877
878	prev->flags &= ~CF_RUNNING;	1186	prev->flags &= ~CF_RUNNING;
879	next->flags |= CF_RUNNING;	1187	next->flags |= CF_RUNNING;
880		1188
881	LOCK;	1189	LOCK;
882		1190
		1191	/* first get rid of the old state */
		1192	save_perl (aTHX_ prev);
		1193
883	if (next->flags & CF_NEW)	1194	if (expect_false (next->flags & CF_NEW))
884	{	1195	{
885	/* need to start coroutine */	1196	/* need to start coroutine */
886	next->flags &= ~CF_NEW;	1197	next->flags &= ~CF_NEW;
887	/* first get rid of the old state */
888	save_perl (aTHX_ prev);
889	/* setup coroutine call */	1198	/* setup coroutine call */
890	setup_coro (aTHX_ next);	1199	coro_setup (aTHX_ next);
891	}	1200	}
892	else	1201	else
893	{
894	/* coroutine already started */
895	save_perl (aTHX_ prev);
896	load_perl (aTHX_ next);	1202	load_perl (aTHX_ next);
897	}
898		1203
899	prev__cctx = prev->cctx;	1204	prev__cctx = prev->cctx;
900		1205
901	/* possibly "free" the cctx */	1206	/* possibly "free" the cctx */
		1207	if (expect_true (
902	if (prev__cctx->idle_sp == STACKLEVEL)	1208	prev__cctx->idle_sp == STACKLEVEL
		1209	&& !(prev__cctx->flags & CC_TRACE)
		1210	&& !force_cctx
		1211	))
903	{	1212	{
904	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1213	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1214	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
906		1215
907	prev->cctx = 0;	1216	prev->cctx = 0;
908		1217
		1218	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1219	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1220	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1221	if (!next->cctx)
		1222	next->cctx = cctx_get (aTHX);
		1223
909	cctx_put (prev__cctx);	1224	cctx_put (prev__cctx);
910	}	1225	}
911		1226
		1227	++next->usecount;
		1228
912	if (!next->cctx)	1229	if (expect_true (!next->cctx))
913	next->cctx = cctx_get (aTHX);	1230	next->cctx = cctx_get (aTHX);
914		1231
		1232	has_throw = !!next->throw;
		1233
915	if (prev__cctx != next->cctx)	1234	if (expect_false (prev__cctx != next->cctx))
916	{	1235	{
917	prev__cctx->top_env = PL_top_env;	1236	prev__cctx->top_env = PL_top_env;
918	PL_top_env = next->cctx->top_env;	1237	PL_top_env = next->cctx->top_env;
919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1238	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
920	}	1239	}
921		1240
922	free_coro_mortal (aTHX);	1241	free_coro_mortal (aTHX);
923	UNLOCK;	1242	UNLOCK;
		1243
		1244	if (expect_false (has_throw))
		1245	{
		1246	struct coro *coro = SvSTATE (coro_current);
		1247
		1248	if (coro->throw)
		1249	{
		1250	SV *exception = coro->throw;
		1251	coro->throw = 0;
		1252	sv_setsv (ERRSV, exception);
		1253	croak (0);
		1254	}
		1255	}
924	}	1256	}
925	}	1257	}
926		1258
927	struct transfer_args	1259	struct transfer_args
928	{	1260	{
929	struct coro *prev, *next;	1261	struct coro *prev, *next;
930	};	1262	};
931		1263
		1264	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1265	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
933		1266
934	/** high level stuff ********************************************************/	1267	/** high level stuff ********************************************************/
935		1268
936	static int	1269	static int
937	coro_state_destroy (pTHX_ struct coro *coro)	1270	coro_state_destroy (pTHX_ struct coro *coro)
…		…
954		1287
955	if (coro->mainstack && coro->mainstack != main_mainstack)	1288	if (coro->mainstack && coro->mainstack != main_mainstack)
956	{	1289	{
957	struct coro temp;	1290	struct coro temp;
958		1291
959	assert (!(coro->flags & CF_RUNNING));
960
961	Zero (&temp, 1, struct coro);
962	temp.save = CORO_SAVE_ALL;
963
964	if (coro->flags & CF_RUNNING)	1292	if (coro->flags & CF_RUNNING)
965	croak ("FATAL: tried to destroy currently running coroutine");	1293	croak ("FATAL: tried to destroy currently running coroutine");
966		1294
967	save_perl (aTHX_ &temp);	1295	save_perl (aTHX_ &temp);
968	load_perl (aTHX_ coro);	1296	load_perl (aTHX_ coro);
969		1297
970	coro_destroy_stacks (aTHX);	1298	coro_destroy (aTHX_ coro);
971		1299
972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1300	load_perl (aTHX_ &temp);
973		1301
974	coro->mainstack = 0;	1302	coro->slot = 0;
975	}	1303	}
976		1304
977	cctx_destroy (coro->cctx);	1305	cctx_destroy (coro->cctx);
978	SvREFCNT_dec (coro->args);	1306	SvREFCNT_dec (coro->args);
979		1307
…		…
1020	#else	1348	#else
1021	# define MGf_DUP 0	1349	# define MGf_DUP 0
1022	#endif	1350	#endif
1023	};	1351	};
1024		1352
1025	static struct coro *
1026	SvSTATE_ (pTHX_ SV *coro)
1027	{
1028	HV *stash;
1029	MAGIC *mg;
1030
1031	if (SvROK (coro))
1032	coro = SvRV (coro);
1033
1034	stash = SvSTASH (coro);
1035	if (stash != coro_stash && stash != coro_state_stash)
1036	{
1037	/* very slow, but rare, check */
1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
1039	croak ("Coro::State object required");
1040	}
1041
1042	mg = CORO_MAGIC (coro);
1043	return (struct coro *)mg->mg_ptr;
1044	}
1045
1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1047
1048	static void	1353	static void
1049	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1354	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1050	{	1355	{
1051	ta->prev = SvSTATE (prev_sv);	1356	ta->prev = SvSTATE (prev_sv);
1052	ta->next = SvSTATE (next_sv);	1357	ta->next = SvSTATE (next_sv);
		1358	TRANSFER_CHECK (*ta);
1053	}	1359	}
1054		1360
1055	static void	1361	static void
1056	api_transfer (SV *prev_sv, SV *next_sv)	1362	api_transfer (SV *prev_sv, SV *next_sv)
1057	{	1363	{
1058	dTHX;	1364	dTHX;
1059	struct transfer_args ta;	1365	struct transfer_args ta;
1060		1366
1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1367	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1062	TRANSFER (ta);	1368	TRANSFER (ta, 1);
1063	}
1064
1065	static int
1066	api_save (SV *coro_sv, int new_save)
1067	{
1068	dTHX;
1069	struct coro *coro = SvSTATE (coro_sv);
1070	int old_save = coro->save;
1071
1072	if (new_save >= 0)
1073	coro->save = new_save;
1074
1075	return old_save;
1076	}	1369	}
1077		1370
1078	/** Coro ********************************************************************/	1371	/** Coro ********************************************************************/
1079		1372
1080	static void	1373	static void
…		…
1082	{	1375	{
1083	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1376	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1084	}	1377	}
1085		1378
1086	static SV *	1379	static SV *
1087	coro_deq (pTHX_ int min_prio)	1380	coro_deq (pTHX)
1088	{	1381	{
1089	int prio = PRIO_MAX - PRIO_MIN;	1382	int prio;
1090		1383
1091	min_prio -= PRIO_MIN;
1092	if (min_prio < 0)
1093	min_prio = 0;
1094
1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1384	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1096	if (AvFILLp (coro_ready [prio]) >= 0)	1385	if (AvFILLp (coro_ready [prio]) >= 0)
1097	return av_shift (coro_ready [prio]);	1386	return av_shift (coro_ready [prio]);
1098		1387
1099	return 0;	1388	return 0;
1100	}	1389	}
…		…
1102	static int	1391	static int
1103	api_ready (SV *coro_sv)	1392	api_ready (SV *coro_sv)
1104	{	1393	{
1105	dTHX;	1394	dTHX;
1106	struct coro *coro;	1395	struct coro *coro;
		1396	SV *sv_hook;
		1397	void (*xs_hook)(void);
1107		1398
1108	if (SvROK (coro_sv))	1399	if (SvROK (coro_sv))
1109	coro_sv = SvRV (coro_sv);	1400	coro_sv = SvRV (coro_sv);
1110		1401
1111	coro = SvSTATE (coro_sv);	1402	coro = SvSTATE (coro_sv);
…		…
1114	return 0;	1405	return 0;
1115		1406
1116	coro->flags |= CF_READY;	1407	coro->flags |= CF_READY;
1117		1408
1118	LOCK;	1409	LOCK;
		1410
		1411	sv_hook = coro_nready ? 0 : coro_readyhook;
		1412	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1413
1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1414	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1120	++coro_nready;	1415	++coro_nready;
		1416
1121	UNLOCK;	1417	UNLOCK;
		1418
		1419	if (sv_hook)
		1420	{
		1421	dSP;
		1422
		1423	ENTER;
		1424	SAVETMPS;
		1425
		1426	PUSHMARK (SP);
		1427	PUTBACK;
		1428	call_sv (sv_hook, G_DISCARD);
		1429	SPAGAIN;
		1430
		1431	FREETMPS;
		1432	LEAVE;
		1433	}
		1434
		1435	if (xs_hook)
		1436	xs_hook ();
1122		1437
1123	return 1;	1438	return 1;
1124	}	1439	}
1125		1440
1126	static int	1441	static int
…		…
1136	SV *prev_sv, *next_sv;	1451	SV *prev_sv, *next_sv;
1137		1452
1138	for (;;)	1453	for (;;)
1139	{	1454	{
1140	LOCK;	1455	LOCK;
1141	next_sv = coro_deq (aTHX_ PRIO_MIN);	1456	next_sv = coro_deq (aTHX);
1142		1457
1143	/* nothing to schedule: call the idle handler */	1458	/* nothing to schedule: call the idle handler */
1144	if (!next_sv)	1459	if (expect_false (!next_sv))
1145	{	1460	{
1146	dSP;	1461	dSP;
1147	UNLOCK;	1462	UNLOCK;
1148		1463
1149	ENTER;	1464	ENTER;
1150	SAVETMPS;	1465	SAVETMPS;
1151		1466
1152	PUSHMARK (SP);	1467	PUSHMARK (SP);
1153	PUTBACK;	1468	PUTBACK;
1154	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1469	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1470	SPAGAIN;
1155		1471
1156	FREETMPS;	1472	FREETMPS;
1157	LEAVE;	1473	LEAVE;
1158	continue;	1474	continue;
1159	}	1475	}
1160		1476
1161	ta->next = SvSTATE (next_sv);	1477	ta->next = SvSTATE (next_sv);
1162		1478
1163	/* cannot transfer to destroyed coros, skip and look for next */	1479	/* cannot transfer to destroyed coros, skip and look for next */
1164	if (ta->next->flags & CF_DESTROYED)	1480	if (expect_false (ta->next->flags & CF_DESTROYED))
1165	{	1481	{
1166	UNLOCK;	1482	UNLOCK;
1167	SvREFCNT_dec (next_sv);	1483	SvREFCNT_dec (next_sv);
1168	/* coro_nready is already taken care of by destroy */	1484	/* coro_nready is already taken care of by destroy */
1169	continue;	1485	continue;
…		…
1174	break;	1490	break;
1175	}	1491	}
1176		1492
1177	/* free this only after the transfer */	1493	/* free this only after the transfer */
1178	prev_sv = SvRV (coro_current);	1494	prev_sv = SvRV (coro_current);
1179	SvRV_set (coro_current, next_sv);
1180	ta->prev = SvSTATE (prev_sv);	1495	ta->prev = SvSTATE (prev_sv);
1181		1496	TRANSFER_CHECK (*ta);
1182	assert (ta->next->flags & CF_READY);	1497	assert (ta->next->flags & CF_READY);
1183	ta->next->flags &= ~CF_READY;	1498	ta->next->flags &= ~CF_READY;
		1499	SvRV_set (coro_current, next_sv);
1184		1500
1185	LOCK;	1501	LOCK;
1186	free_coro_mortal (aTHX);	1502	free_coro_mortal (aTHX);
1187	coro_mortal = prev_sv;	1503	coro_mortal = prev_sv;
1188	UNLOCK;	1504	UNLOCK;
…		…
1214	{	1530	{
1215	dTHX;	1531	dTHX;
1216	struct transfer_args ta;	1532	struct transfer_args ta;
1217		1533
1218	prepare_schedule (aTHX_ &ta);	1534	prepare_schedule (aTHX_ &ta);
1219	TRANSFER (ta);	1535	TRANSFER (ta, 1);
1220	}	1536	}
1221		1537
1222	static int	1538	static int
1223	api_cede (void)	1539	api_cede (void)
1224	{	1540	{
1225	dTHX;	1541	dTHX;
1226	struct transfer_args ta;	1542	struct transfer_args ta;
1227		1543
1228	prepare_cede (aTHX_ &ta);	1544	prepare_cede (aTHX_ &ta);
1229		1545
1230	if (ta.prev != ta.next)	1546	if (expect_true (ta.prev != ta.next))
1231	{	1547	{
1232	TRANSFER (ta);	1548	TRANSFER (ta, 1);
1233	return 1;	1549	return 1;
1234	}	1550	}
1235	else	1551	else
1236	return 0;	1552	return 0;
1237	}	1553	}
…		…
1242	dTHX;	1558	dTHX;
1243	struct transfer_args ta;	1559	struct transfer_args ta;
1244		1560
1245	if (prepare_cede_notself (aTHX_ &ta))	1561	if (prepare_cede_notself (aTHX_ &ta))
1246	{	1562	{
1247	TRANSFER (ta);	1563	TRANSFER (ta, 1);
1248	return 1;	1564	return 1;
1249	}	1565	}
1250	else	1566	else
1251	return 0;	1567	return 0;
1252	}	1568	}
1253		1569
		1570	static void
		1571	api_trace (SV *coro_sv, int flags)
		1572	{
		1573	dTHX;
		1574	struct coro *coro = SvSTATE (coro_sv);
		1575
		1576	if (flags & CC_TRACE)
		1577	{
		1578	if (!coro->cctx)
		1579	coro->cctx = cctx_new ();
		1580	else if (!(coro->cctx->flags & CC_TRACE))
		1581	croak ("cannot enable tracing on coroutine with custom stack");
		1582
		1583	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1584	}
		1585	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1586	{
		1587	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1588
		1589	if (coro->flags & CF_RUNNING)
		1590	PL_runops = RUNOPS_DEFAULT;
		1591	else
		1592	coro->slot->runops = RUNOPS_DEFAULT;
		1593	}
		1594	}
		1595
1254	MODULE = Coro::State PACKAGE = Coro::State	1596	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1255		1597
1256	PROTOTYPES: DISABLE	1598	PROTOTYPES: DISABLE
1257		1599
1258	BOOT:	1600	BOOT:
1259	{	1601	{
1260	#ifdef USE_ITHREADS	1602	#ifdef USE_ITHREADS
1261	MUTEX_INIT (&coro_mutex);	1603	MUTEX_INIT (&coro_mutex);
1262	#endif	1604	#endif
1263	BOOT_PAGESIZE;	1605	BOOT_PAGESIZE;
1264		1606
		1607	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1608	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1609
		1610	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1611	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1612	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1613	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1614
		1615	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1616	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1617	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1618
1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1619	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1266		1620
1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1621	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1622	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1270	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1271	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1272	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1623	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1624	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1274		1625
1275	main_mainstack = PL_mainstack;	1626	main_mainstack = PL_mainstack;
1276	main_top_env = PL_top_env;	1627	main_top_env = PL_top_env;
1277		1628
1278	while (main_top_env->je_prev)	1629	while (main_top_env->je_prev)
1279	main_top_env = main_top_env->je_prev;	1630	main_top_env = main_top_env->je_prev;
1280		1631
1281	coroapi.ver = CORO_API_VERSION;	1632	coroapi.ver = CORO_API_VERSION;
		1633	coroapi.rev = CORO_API_REVISION;
1282	coroapi.transfer = api_transfer;	1634	coroapi.transfer = api_transfer;
1283		1635
1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1636	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1285	}	1637	}
1286		1638
1287	SV *	1639	SV *
1288	new (char *klass, ...)	1640	new (char *klass, ...)
1289	CODE:	1641	CODE:
1290	{	1642	{
1291	struct coro *coro;	1643	struct coro *coro;
		1644	MAGIC *mg;
1292	HV *hv;	1645	HV *hv;
1293	int i;	1646	int i;
1294		1647
1295	Newz (0, coro, 1, struct coro);	1648	Newz (0, coro, 1, struct coro);
1296	coro->args = newAV ();	1649	coro->args = newAV ();
1297	coro->save = CORO_SAVE_DEF;
1298	coro->flags = CF_NEW;	1650	coro->flags = CF_NEW;
1299		1651
1300	if (coro_first) coro_first->prev = coro;	1652	if (coro_first) coro_first->prev = coro;
1301	coro->next = coro_first;	1653	coro->next = coro_first;
1302	coro_first = coro;	1654	coro_first = coro;
1303		1655
1304	coro->hv = hv = newHV ();	1656	coro->hv = hv = newHV ();
1305	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1657	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1658	mg->mg_flags |= MGf_DUP;
1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1659	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1307		1660
		1661	av_extend (coro->args, items - 1);
1308	for (i = 1; i < items; i++)	1662	for (i = 1; i < items; i++)
1309	av_push (coro->args, newSVsv (ST (i)));	1663	av_push (coro->args, newSVsv (ST (i)));
1310	}	1664	}
1311	OUTPUT:	1665	OUTPUT:
1312	RETVAL	1666	RETVAL
1313		1667
1314	int	1668	# these not obviously related functions are all rolled into the same xs
1315	save (SV *coro, int new_save = -1)	1669	# function to increase chances that they all will call transfer with the same
1316	CODE:	1670	# stack offset
1317	RETVAL = api_save (coro, new_save);
1318	OUTPUT:
1319	RETVAL
1320
1321	int
1322	save_also (SV *coro_sv, int save_also)
1323	CODE:
1324	{
1325	struct coro *coro = SvSTATE (coro_sv);
1326	RETVAL = coro->save;
1327	coro->save |= save_also;
1328	}
1329	OUTPUT:
1330	RETVAL
1331
1332	void	1671	void
1333	_set_stacklevel (...)	1672	_set_stacklevel (...)
1334	ALIAS:	1673	ALIAS:
1335	Coro::State::transfer = 1	1674	Coro::State::transfer = 1
1336	Coro::schedule = 2	1675	Coro::schedule = 2
…		…
1338	Coro::cede_notself = 4	1677	Coro::cede_notself = 4
1339	CODE:	1678	CODE:
1340	{	1679	{
1341	struct transfer_args ta;	1680	struct transfer_args ta;
1342		1681
		1682	PUTBACK;
1343	switch (ix)	1683	switch (ix)
1344	{	1684	{
1345	case 0:	1685	case 0:
1346	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1686	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1347	ta.next = 0;	1687	ta.next = 0;
…		…
1366	if (!prepare_cede_notself (aTHX_ &ta))	1706	if (!prepare_cede_notself (aTHX_ &ta))
1367	XSRETURN_EMPTY;	1707	XSRETURN_EMPTY;
1368		1708
1369	break;	1709	break;
1370	}	1710	}
		1711	SPAGAIN;
1371		1712
1372	BARRIER;	1713	BARRIER;
		1714	PUTBACK;
1373	TRANSFER (ta);	1715	TRANSFER (ta, 0);
1374		1716	SPAGAIN; /* might be the sp of a different coroutine now */
1375	if (GIMME_V != G_VOID && ta.next != ta.prev)	1717	/* be extra careful not to ever do anything after TRANSFER */
1376	XSRETURN_YES;
1377	}	1718	}
1378		1719
1379	bool	1720	bool
1380	_destroy (SV *coro_sv)	1721	_destroy (SV *coro_sv)
1381	CODE:	1722	CODE:
1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1723	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1383	OUTPUT:	1724	OUTPUT:
1384	RETVAL	1725	RETVAL
1385		1726
1386	void	1727	void
1387	_exit (code)	1728	_exit (int code)
1388	int code
1389	PROTOTYPE: $	1729	PROTOTYPE: $
1390	CODE:	1730	CODE:
1391	_exit (code);	1731	_exit (code);
1392		1732
1393	int	1733	int
…		…
1430	CODE:	1770	CODE:
1431	{	1771	{
1432	if (coro->mainstack)	1772	if (coro->mainstack)
1433	{	1773	{
1434	struct coro temp;	1774	struct coro temp;
1435	Zero (&temp, 1, struct coro);
1436	temp.save = CORO_SAVE_ALL;
1437		1775
1438	if (!(coro->flags & CF_RUNNING))	1776	if (!(coro->flags & CF_RUNNING))
1439	{	1777	{
		1778	PUTBACK;
1440	save_perl (aTHX_ &temp);	1779	save_perl (aTHX_ &temp);
1441	load_perl (aTHX_ coro);	1780	load_perl (aTHX_ coro);
1442	}	1781	}
1443		1782
1444	{	1783	{
1445	dSP;	1784	dSP;
1446	ENTER;	1785	ENTER;
1447	SAVETMPS;	1786	SAVETMPS;
		1787	PUTBACK;
		1788	PUSHSTACK;
1448	PUSHMARK (SP);	1789	PUSHMARK (SP);
1449	PUTBACK;	1790
1450	if (ix)	1791	if (ix)
1451	eval_sv (coderef, 0);	1792	eval_sv (coderef, 0);
1452	else	1793	else
1453	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1794	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1795
		1796	POPSTACK;
1454	SPAGAIN;	1797	SPAGAIN;
1455	FREETMPS;	1798	FREETMPS;
1456	LEAVE;	1799	LEAVE;
1457	PUTBACK;	1800	PUTBACK;
1458	}	1801	}
1459		1802
1460	if (!(coro->flags & CF_RUNNING))	1803	if (!(coro->flags & CF_RUNNING))
1461	{	1804	{
1462	save_perl (aTHX_ coro);	1805	save_perl (aTHX_ coro);
1463	load_perl (aTHX_ &temp);	1806	load_perl (aTHX_ &temp);
		1807	SPAGAIN;
1464	}	1808	}
1465	}	1809	}
1466	}	1810	}
1467		1811
1468	SV *	1812	SV *
1469	is_ready (Coro::State coro)	1813	is_ready (Coro::State coro)
1470	PROTOTYPE: $	1814	PROTOTYPE: $
1471	ALIAS:	1815	ALIAS:
1472	is_ready = CF_READY	1816	is_ready = CF_READY
…		…
1477	RETVAL = boolSV (coro->flags & ix);	1821	RETVAL = boolSV (coro->flags & ix);
1478	OUTPUT:	1822	OUTPUT:
1479	RETVAL	1823	RETVAL
1480		1824
1481	void	1825	void
1482	trace (Coro::State coro, int enable = 0)	1826	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1483	CODE:
1484	if (enable)
1485	{
1486	if (coro->flags & CF_RUNNING)
1487	croak ("cannot enable tracing on running coroutine");
1488
1489	if (coro->cctx)
1490	croak ("cannot enable tracing on coroutine with custom stack");
1491
1492	coro->cctx = cctx_new ();
1493	coro->cctx->flags |= CC_TRACE;
1494	}
1495	else
1496	if (coro->cctx && coro->cctx->flags & CC_TRACE)
1497	{
1498	coro->cctx->flags &= ~CC_TRACE;
1499	coro->cctx->flags |= CC_NOREUSE;
1500	}
1501		1827
1502	SV *	1828	SV *
1503	has_stack (Coro::State coro)	1829	has_cctx (Coro::State coro)
1504	PROTOTYPE: $	1830	PROTOTYPE: $
1505	CODE:	1831	CODE:
1506	RETVAL = boolSV (!!coro->cctx);	1832	RETVAL = boolSV (!!coro->cctx);
1507	OUTPUT:	1833	OUTPUT:
1508	RETVAL	1834	RETVAL
1509		1835
		1836	int
		1837	is_traced (Coro::State coro)
		1838	PROTOTYPE: $
		1839	CODE:
		1840	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1841	OUTPUT:
		1842	RETVAL
		1843
1510	IV	1844	IV
1511	rss (Coro::State coro)	1845	rss (Coro::State coro)
1512	PROTOTYPE: $	1846	PROTOTYPE: $
		1847	ALIAS:
		1848	usecount = 1
1513	CODE:	1849	CODE:
1514	RETVAL = coro_rss (coro);	1850	switch (ix)
		1851	{
		1852	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1853	case 1: RETVAL = coro->usecount; break;
		1854	}
1515	OUTPUT:	1855	OUTPUT:
1516	RETVAL	1856	RETVAL
1517		1857
		1858	void
		1859	force_cctx ()
		1860	CODE:
		1861	struct coro *coro = SvSTATE (coro_current);
		1862	coro->cctx->idle_sp = 0;
1518		1863
1519	MODULE = Coro::State PACKAGE = Coro	1864	MODULE = Coro::State PACKAGE = Coro
1520		1865
1521	BOOT:	1866	BOOT:
1522	{	1867	{
1523	int i;	1868	int i;
1524		1869
1525	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1526	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1527	av_async_pool = get_av ("Coro::async_pool", TRUE);	1870	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1871	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1872	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1528		1873
1529	coro_current = get_sv ("Coro::current", FALSE);	1874	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1530	SvREADONLY_on (coro_current);	1875	SvREADONLY_on (coro_current);
1531		1876
1532	coro_stash = gv_stashpv ("Coro", TRUE);	1877	coro_stash = gv_stashpv ("Coro", TRUE);
1533		1878
1534	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1879	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1535	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1880	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1536	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1881	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1537	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1882	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1540		1885
1541	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1886	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1542	coro_ready[i] = newAV ();	1887	coro_ready[i] = newAV ();
1543		1888
1544	{	1889	{
1545	SV *sv = perl_get_sv("Coro::API", 1);	1890	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1891	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1546		1892
1547	coroapi.schedule = api_schedule;	1893	coroapi.schedule = api_schedule;
1548	coroapi.save = api_save;
1549	coroapi.cede = api_cede;	1894	coroapi.cede = api_cede;
1550	coroapi.cede_notself = api_cede_notself;	1895	coroapi.cede_notself = api_cede_notself;
1551	coroapi.ready = api_ready;	1896	coroapi.ready = api_ready;
1552	coroapi.is_ready = api_is_ready;	1897	coroapi.is_ready = api_is_ready;
1553	coroapi.nready = &coro_nready;	1898	coroapi.nready = &coro_nready;
…		…
1563	_set_current (SV *current)	1908	_set_current (SV *current)
1564	PROTOTYPE: $	1909	PROTOTYPE: $
1565	CODE:	1910	CODE:
1566	SvREFCNT_dec (SvRV (coro_current));	1911	SvREFCNT_dec (SvRV (coro_current));
1567	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1912	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1913
		1914	void
		1915	_set_readyhook (SV *hook)
		1916	PROTOTYPE: $
		1917	CODE:
		1918	LOCK;
		1919	SvREFCNT_dec (coro_readyhook);
		1920	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1921	UNLOCK;
1568		1922
1569	int	1923	int
1570	prio (Coro::State coro, int newprio = 0)	1924	prio (Coro::State coro, int newprio = 0)
1571	ALIAS:	1925	ALIAS:
1572	nice = 1	1926	nice = 1
…		…
1602	CODE:	1956	CODE:
1603	RETVAL = coro_nready;	1957	RETVAL = coro_nready;
1604	OUTPUT:	1958	OUTPUT:
1605	RETVAL	1959	RETVAL
1606		1960
		1961	void
		1962	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1963	PROTOTYPE: $;$
		1964	CODE:
		1965	SvREFCNT_dec (self->throw);
		1966	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1967
		1968	void
		1969	swap_defsv (Coro::State self)
		1970	PROTOTYPE: $
		1971	ALIAS:
		1972	swap_defav = 1
		1973	CODE:
		1974	if (!self->slot)
		1975	croak ("cannot swap state with coroutine that has no saved state");
		1976	else
		1977	{
		1978	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1979	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1980
		1981	SV *tmp = *src; *src = *dst; *dst = tmp;
		1982	}
		1983
1607	# for async_pool speedup	1984	# for async_pool speedup
1608	void	1985	void
1609	_pool_1 (SV *cb)	1986	_pool_1 (SV *cb)
1610	CODE:	1987	CODE:
1611	{	1988	{
1612	int i, len;	1989	struct coro *coro = SvSTATE (coro_current);
1613	HV *hv = (HV *)SvRV (coro_current);	1990	HV *hv = (HV *)SvRV (coro_current);
1614	AV *defav = GvAV (PL_defgv);	1991	AV *defav = GvAV (PL_defgv);
1615	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1992	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1616	AV *invoke_av;	1993	AV *invoke_av;
		1994	int i, len;
1617		1995
1618	if (!invoke)	1996	if (!invoke)
		1997	{
		1998	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1619	croak ("\3terminate\2\n");	1999	croak ("\3async_pool terminate\2\n");
		2000	}
		2001
		2002	SvREFCNT_dec (coro->saved_deffh);
		2003	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1620		2004
1621	hv_store (hv, "desc", sizeof ("desc") - 1,	2005	hv_store (hv, "desc", sizeof ("desc") - 1,
1622	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2006	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1623		2007
1624	invoke_av = (AV *)SvRV (invoke);	2008	invoke_av = (AV *)SvRV (invoke);
…		…
1642	{	2026	{
1643	struct coro *coro = SvSTATE (coro_current);	2027	struct coro *coro = SvSTATE (coro_current);
1644		2028
1645	sv_setsv (cb, &PL_sv_undef);	2029	sv_setsv (cb, &PL_sv_undef);
1646		2030
		2031	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2032	coro->saved_deffh = 0;
		2033
1647	if (coro_rss (coro) > SvIV (sv_pool_rss)	2034	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1648	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2035	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2036	{
		2037	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1649	croak ("\3terminate\2\n");	2038	croak ("\3async_pool terminate\2\n");
		2039	}
1650		2040
1651	av_clear (GvAV (PL_defgv));	2041	av_clear (GvAV (PL_defgv));
1652	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2042	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1653	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2043	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1654	coro->save = CORO_SAVE_DEF;	2044
1655	coro->prio = 0;	2045	coro->prio = 0;
		2046
		2047	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2048	api_trace (coro_current, 0);
		2049
1656	av_push (av_async_pool, newSVsv (coro_current));	2050	av_push (av_async_pool, newSVsv (coro_current));
1657	}	2051	}
1658		2052
1659		2053
1660	MODULE = Coro::State PACKAGE = Coro::AIO	2054	MODULE = Coro::State PACKAGE = Coro::AIO
…		…
1689	PL_laststype = data->laststype;	2083	PL_laststype = data->laststype;
1690	PL_laststatval = data->laststatval;	2084	PL_laststatval = data->laststatval;
1691	PL_statcache = data->statcache;	2085	PL_statcache = data->statcache;
1692	}	2086	}
1693		2087
		2088
		2089	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2090
		2091	BOOT:
		2092	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2093
		2094	SV *
		2095	_schedule (...)
		2096	PROTOTYPE: @
		2097	CODE:
		2098	{
		2099	static int incede;
		2100
		2101	api_cede_notself ();
		2102
		2103	++incede;
		2104	while (coro_nready >= incede && api_cede ())
		2105	;
		2106
		2107	sv_setsv (sv_activity, &PL_sv_undef);
		2108	if (coro_nready >= incede)
		2109	{
		2110	PUSHMARK (SP);
		2111	PUTBACK;
		2112	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2113	SPAGAIN;
		2114	}
		2115
		2116	--incede;
		2117	}
		2118

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