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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC vs.
Revision 1.234 by root, Fri May 9 22:29:05 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;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
141		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 {
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	216	};
180		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
181	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
182	struct coro {	232	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	234	coro_cctx *cctx;
185		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots slot; / basically the saved sp */
		239
186	/* data associated with this coroutine (initial args) */	240	AV args; / data associated with this coroutine (initial args) */
187	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
191		243	HV hv; / the perl hash associated with this coro, if any */
192	/* optionally saved, might be zero */
193	AV defav; / @_ */
194	SV defsv; / $_ */
195	SV errsv; / $@ */
196	GV deffh; / default filehandle */
197	SV irssv; / $/ */
198	SV irssv_sv; / real $/ cache */
199
200	#define VAR(name,type) type name;
201	# include "state.h"
202	#undef VAR
203		244
204	/* statistics */	245	/* statistics */
205	int usecount; /* number of switches to this coro */	246	int usecount; /* number of transfers to this coro */
206		247
207	/* coro process data */	248	/* coro process data */
208	int prio;	249	int prio;
		250	SV throw; / exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
209		254
210	/* linked list */	255	/* linked list */
211	struct coro next, prev;	256	struct coro next, prev;
212	HV hv; / the perl hash associated with this coro, if any */
213	};	257	};
214		258
215	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
216	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
217		261
…		…
224	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
225	#define PRIO_MIN -4	269	#define PRIO_MIN -4
226		270
227	/* for Coro.pm */	271	/* for Coro.pm */
228	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
230	static int coro_nready;	275	static int coro_nready;
231	static struct coro *coro_first;	276	static struct coro *coro_first;
232		277
233	/ lowlevel stuff ********************************************************/	278	/ lowlevel stuff ********************************************************/
234		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
235	static AV *	310	static AV *
236	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
237	{	312	{
238	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
239	AV newpadlist, newpad;	314	AV newpadlist, newpad;
240		315
241	newpadlist = newAV ();	316	newpadlist = newAV ();
242	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
243	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245	#else	320	#else
246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247	#endif	322	#endif
248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
286		361
287	/* casting is fun. */	362	/* casting is fun. */
288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	363	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
289	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
290		365
291	SvREFCNT_dec (av);
292
293	return 0;	366	return 0;
294	}	367	}
295		368
296	#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
297		371
298	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	};
299		376
300	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
301	SvMAGIC (cv) \	378	SvMAGIC (sv) \
302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
303	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
305	: 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)
306		386
307	static struct coro *	387	static struct coro *
308	SvSTATE_ (pTHX_ SV *coro)	388	SvSTATE_ (pTHX_ SV *coro)
309	{	389	{
310	HV *stash;	390	HV *stash;
311	MAGIC *mg;	391	MAGIC *mg;
312		392
313	if (SvROK (coro))	393	if (SvROK (coro))
314	coro = SvRV (coro);	394	coro = SvRV (coro);
315		395
316	if (SvTYPE (coro) != SVt_PVHV)	396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
317	croak ("Coro::State object required");	397	croak ("Coro::State object required");
318		398
319	stash = SvSTASH (coro);	399	stash = SvSTASH (coro);
320	if (stash != coro_stash && stash != coro_state_stash)	400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
321	{	401	{
322	/* very slow, but rare, check */	402	/* very slow, but rare, check */
323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324	croak ("Coro::State object required");	404	croak ("Coro::State object required");
325	}	405	}
326		406
327	mg = CORO_MAGIC (coro);	407	mg = CORO_MAGIC_state (coro);
328	return (struct coro *)mg->mg_ptr;	408	return (struct coro *)mg->mg_ptr;
329	}	409	}
330		410
331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332		412
333	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
334	static void	414	static void
335	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
336	{	416	{
337	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
338	AV *av;	418	AV *av;
339		419
340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342	else	422	else
343	{	423	{
344	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
345	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
354	}	434	}
355		435
356	static void	436	static void
357	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
358	{	438	{
359	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
360	AV *av;	440	AV *av;
361		441
362	if (!mg)	442	if (expect_false (!mg))
363	{	443	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366	mg->mg_virtual = &vtbl_coro;
367	mg->mg_obj = (SV *)newAV ();
368	}
369		444
370	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
371		446
372	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
373	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
374		449
375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376	}	451	}
377		452
378	/ load & save, init *****************************************************/	453	/ load & save, init *****************************************************/
379
380	#define SB do {
381	#define SE } while (0)
382
383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384		454
385	static void	455	static void
386	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
387	{	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
388	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	469	# include "state.h"
390	#undef VAR	470	#undef VAR
391
392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397	if (c->irssv)
398	{
399	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
400	{
401	SvREFCNT_dec (c->irssv);
402	c->irssv = 0;
403	}
404	else
405	{
406	REPLACE_SV (PL_rs, c->irssv);
407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408	sv_setsv (c->irssv_sv, PL_rs);
409	}
410	}
411		471
412	{	472	{
413	dSP;	473	dSP;
		474
414	CV *cv;	475	CV *cv;
415		476
416	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
417	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
418	{	479	{
419	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
420	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
421	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
422	}	483	}
…		…
441		502
442	XPUSHs (Nullsv);	503	XPUSHs (Nullsv);
443	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
444	for (;;)	505	for (;;)
445	{	506	{
446	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
447	{	508	{
448	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
449		510
450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	511	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
451	{	512	{
452	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
453		514
454	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
455	{	516	{
456	EXTEND (SP, 3);	517	EXTEND (SP, 3);
457	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
460		521
461	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
462	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
463	}	524	}
464	}	525	}
465	}	526	}
466		527
467	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
468	break;	529	break;
469		530
470	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
471	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
472	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
473	}	534	}
474		535
475	PUTBACK;	536	PUTBACK;
476	}	537	}
477		538
478	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 */
479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
482	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 */
483		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
484	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
485	# include "state.h"	562	# include "state.h"
486	#undef VAR	563	#undef VAR
		564	}
487	}	565	}
488		566
489	/*	567	/*
490	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
496	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
497	#else	575	#else
498	static void	576	static void
499	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
500	{	578	{
501	PL_curstackinfo = new_stackinfo(64, 6);	579	PL_curstackinfo = new_stackinfo(32, 8);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		583
506	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		587
510	New(50,PL_tmps_stack,64,SV*);	588	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
513	PL_tmps_max = 64;	591	PL_tmps_max = 32;
514		592
515	New(54,PL_markstack,16,I32);	593	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	595	PL_markstack_max = PL_markstack + 16;
518		596
519	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
521	#endif	599	#endif
522		600
523	New(54,PL_scopestack,16,I32);	601	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	603	PL_scopestack_max = 8;
526		604
527	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
529	PL_savestack_max = 64;	607	PL_savestack_max = 24;
530		608
531	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
532	New(54,PL_retstack,4,OP*);	610	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
534	PL_retstack_max = 4;	612	PL_retstack_max = 4;
535	#endif	613	#endif
536	}	614	}
…		…
540	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
541	*/	619	*/
542	static void	620	static void
543	coro_destroy_stacks (pTHX)	621	coro_destroy_stacks (pTHX)
544	{	622	{
545	if (!IN_DESTRUCT)
546	{
547	/* restore all saved variables and stuff */
548	LEAVE_SCOPE (0);
549	assert (PL_tmps_floor == -1);
550
551	/* free all temporaries */
552	FREETMPS;
553	assert (PL_tmps_ix == -1);
554
555	/* unwind all extra stacks */
556	POPSTACK_TO (PL_mainstack);
557
558	/* unwind main stack */
559	dounwind (-1);
560	}
561
562	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
563	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
564		625
565	while (PL_curstackinfo)	626	while (PL_curstackinfo)
566	{	627	{
…		…
576		637
577	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
578	Safefree (PL_markstack);	639	Safefree (PL_markstack);
579	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
580	Safefree (PL_savestack);	641	Safefree (PL_savestack);
581	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
582	Safefree (PL_retstack);	643	Safefree (PL_retstack);
583	#endif	644	#endif
584	}	645	}
585		646
586	static size_t	647	static size_t
587	coro_rss (pTHX_ struct coro *coro)	648	coro_rss (pTHX_ struct coro *coro)
588	{	649	{
589	size_t rss = sizeof (coro);	650	size_t rss = sizeof (*coro);
590		651
591	if (coro->mainstack)	652	if (coro->mainstack)
592	{	653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
593	if (coro->flags & CF_RUNNING)	657	if (coro->flags & CF_RUNNING)
594	{	658	{
		659	slot = &tmp_slot;
		660
595	#define VAR(name,type)coro->name = PL_ ## name;	661	#define VAR(name,type) slot->name = PL_ ## name;
596	# include "state.h"	662	# include "state.h"
597	#undef VAR	663	#undef VAR
598	}	664	}
		665	else
		666	slot = coro->slot;
599		667
600	rss += sizeof (coro->curstackinfo);	668	rss += sizeof (slot->curstackinfo);
601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604	rss += coro->tmps_max * sizeof (SV *);	671	rss += slot->tmps_max * sizeof (SV *);
605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606	rss += coro->scopestack_max * sizeof (I32);	673	rss += slot->scopestack_max * sizeof (I32);
607	rss += coro->savestack_max * sizeof (ANY);	674	rss += slot->savestack_max * sizeof (ANY);
608		675
609	#if !PERL_VERSION_ATLEAST (5,9,0)	676	#if !PERL_VERSION_ATLEAST (5,10,0)
610	rss += coro->retstack_max * sizeof (OP *);	677	rss += slot->retstack_max * sizeof (OP *);
611	#endif	678	#endif
612	}	679	}
613		680
614	return rss;	681	return rss;
615	}	682	}
616		683
617	/ coroutine stack handling **********************************************/	684	/ coroutine stack handling **********************************************/
618		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	/*
		690	* This overrides the default magic get method of %SIG elements.
		691	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		692	* and instead of tryign to save and restore the hash elements, we just provide
		693	* readback here.
		694	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		695	* not expecting this to actually change the hook. This is a potential problem
		696	* when a schedule happens then, but we ignore this.
		697	*/
		698	static int
		699	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		700	{
		701	const char *s = MgPV_nolen_const (mg);
		702
		703	if (*s == '_')
		704	{
		705	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		706	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		707	}
		708
		709	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		710	}
		711
		712	static int
		713	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		714	{
		715	const char *s = MgPV_nolen_const (mg);
		716
		717	if (*s == '_')
		718	{
		719	SV **svp = 0;
		720
		721	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		722	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		723
		724	if (svp)
		725	{
		726	SV old = svp;
		727	*svp = newSVsv (sv);
		728	SvREFCNT_dec (old);
		729	return 0;
		730	}
		731	}
		732
		733	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		734	}
		735
619	static void	736	static void
620	setup_coro (pTHX_ struct coro *coro)	737	coro_setup (pTHX_ struct coro *coro)
621	{	738	{
622	/*	739	/*
623	* emulate part of the perl startup here.	740	* emulate part of the perl startup here.
624	*/	741	*/
625	coro_init_stacks (aTHX);	742	coro_init_stacks (aTHX);
…		…
627	PL_runops = RUNOPS_DEFAULT;	744	PL_runops = RUNOPS_DEFAULT;
628	PL_curcop = &PL_compiling;	745	PL_curcop = &PL_compiling;
629	PL_in_eval = EVAL_NULL;	746	PL_in_eval = EVAL_NULL;
630	PL_comppad = 0;	747	PL_comppad = 0;
631	PL_curpm = 0;	748	PL_curpm = 0;
		749	PL_curpad = 0;
632	PL_localizing = 0;	750	PL_localizing = 0;
633	PL_dirty = 0;	751	PL_dirty = 0;
634	PL_restartop = 0;	752	PL_restartop = 0;
		753	#if PERL_VERSION_ATLEAST (5,10,0)
		754	PL_parser = 0;
		755	#endif
		756
		757	/* recreate the die/warn hooks */
		758	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		759	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		760
		761	GvSV (PL_defgv) = newSV (0);
		762	GvAV (PL_defgv) = coro->args; coro->args = 0;
		763	GvSV (PL_errgv) = newSV (0);
		764	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		765	PL_rs = newSVsv (GvSV (irsgv));
		766	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
635		767
636	{	768	{
637	dSP;	769	dSP;
638	LOGOP myop;	770	LOGOP myop;
639		771
640	SvREFCNT_dec (GvAV (PL_defgv));
641	GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643	Zero (&myop, 1, LOGOP);	772	Zero (&myop, 1, LOGOP);
644	myop.op_next = Nullop;	773	myop.op_next = Nullop;
645	myop.op_flags = OPf_WANT_VOID;	774	myop.op_flags = OPf_WANT_VOID;
646		775
647	PUSHMARK (SP);	776	PUSHMARK (SP);
648	XPUSHs (av_shift (GvAV (PL_defgv)));	777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649	PUTBACK;	778	PUTBACK;
650	PL_op = (OP *)&myop;	779	PL_op = (OP *)&myop;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	781	SPAGAIN;
653	}	782	}
654		783
655	ENTER; /* necessary e.g. for dounwind */	784	/* this newly created coroutine might be run on an existing cctx which most
		785	* likely was suspended in set_stacklevel, called from entersub.
		786	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		787	* so we ENTER here for symmetry
		788	*/
		789	ENTER;
		790	}
		791
		792	static void
		793	coro_destroy (pTHX_ struct coro *coro)
		794	{
		795	if (!IN_DESTRUCT)
		796	{
		797	/* restore all saved variables and stuff */
		798	LEAVE_SCOPE (0);
		799	assert (PL_tmps_floor == -1);
		800
		801	/* free all temporaries */
		802	FREETMPS;
		803	assert (PL_tmps_ix == -1);
		804
		805	/* unwind all extra stacks */
		806	POPSTACK_TO (PL_mainstack);
		807
		808	/* unwind main stack */
		809	dounwind (-1);
		810	}
		811
		812	SvREFCNT_dec (GvSV (PL_defgv));
		813	SvREFCNT_dec (GvAV (PL_defgv));
		814	SvREFCNT_dec (GvSV (PL_errgv));
		815	SvREFCNT_dec (PL_defoutgv);
		816	SvREFCNT_dec (PL_rs);
		817	SvREFCNT_dec (GvSV (irsgv));
		818
		819	SvREFCNT_dec (PL_diehook);
		820	SvREFCNT_dec (PL_warnhook);
		821
		822	SvREFCNT_dec (coro->saved_deffh);
		823	SvREFCNT_dec (coro->throw);
		824
		825	coro_destroy_stacks (aTHX);
656	}	826	}
657		827
658	static void	828	static void
659	free_coro_mortal (pTHX)	829	free_coro_mortal (pTHX)
660	{	830	{
661	if (coro_mortal)	831	if (expect_true (coro_mortal))
662	{	832	{
663	SvREFCNT_dec (coro_mortal);	833	SvREFCNT_dec (coro_mortal);
664	coro_mortal = 0;	834	coro_mortal = 0;
665	}	835	}
666	}	836	}
…		…
675		845
676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	846	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
677	{	847	{
678	PERL_ASYNC_CHECK ();	848	PERL_ASYNC_CHECK ();
679		849
680	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	850	if (cctx->flags & CC_TRACE_ALL)
681	{	851	{
682	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	852	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
683	SV bot, top;
684	AV av = newAV (); / return values */
685	SV **cb;
686	runops_proc_t old_runops = PL_runops;
687	dSP;
688	ENTER;
689	SAVETMPS;
690	EXTEND (SP, 3);
691	PL_runops = RUNOPS_DEFAULT;
692
693	GV *gv = CvGV (cx->blk_sub.cv);
694	SV *fullname = sv_2mortal (newSV (0));
695	if (isGV (gv))
696	gv_efullname3 (fullname, gv, 0);
697
698	bot = PL_stack_base + cx->blk_oldsp + 1;
699	top = cx->blk_gimme == G_ARRAY ? SP + 1
700	: cx->blk_gimme == G_SCALAR ? bot + 1
701	: bot;
702
703	while (bot < top)
704	av_push (av, SvREFCNT_inc (*bot++));
705
706	PUSHMARK (SP);
707	PUSHs (&PL_sv_no);
708	PUSHs (fullname);
709	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
710	PUTBACK;
711	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
712	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
713	SPAGAIN;
714
715	FREETMPS;
716	LEAVE;
717	PL_runops = old_runops;
718	}
719
720	if (oldcop != PL_curcop)
721	{
722	oldcop = PL_curcop;
723
724	if (PL_curcop != &PL_compiling)
725	{	853	{
		854	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		855	SV bot, top;
		856	AV av = newAV (); / return values */
726	SV **cb;	857	SV **cb;
727	runops_proc_t old_runops = PL_runops;
728	dSP;	858	dSP;
		859
		860	GV *gv = CvGV (cx->blk_sub.cv);
		861	SV *fullname = sv_2mortal (newSV (0));
		862	if (isGV (gv))
		863	gv_efullname3 (fullname, gv, 0);
		864
		865	bot = PL_stack_base + cx->blk_oldsp + 1;
		866	top = cx->blk_gimme == G_ARRAY ? SP + 1
		867	: cx->blk_gimme == G_SCALAR ? bot + 1
		868	: bot;
		869
		870	av_extend (av, top - bot);
		871	while (bot < top)
		872	av_push (av, SvREFCNT_inc (*bot++));
		873
		874	PL_runops = RUNOPS_DEFAULT;
729	ENTER;	875	ENTER;
730	SAVETMPS;	876	SAVETMPS;
731	EXTEND (SP, 3);	877	EXTEND (SP, 3);
732	PL_runops = RUNOPS_DEFAULT;	878	PUSHMARK (SP);
		879	PUSHs (&PL_sv_no);
		880	PUSHs (fullname);
		881	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		882	PUTBACK;
		883	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		884	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		885	SPAGAIN;
		886	FREETMPS;
		887	LEAVE;
		888	PL_runops = runops_trace;
		889	}
733		890
734	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	891	if (oldcop != PL_curcop)
		892	{
		893	oldcop = PL_curcop;
		894
		895	if (PL_curcop != &PL_compiling)
735	{	896	{
736	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	897	SV **cb;
737		898
738	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	899	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
739	{	900	{
		901	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		902
		903	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		904	{
		905	runops_proc_t old_runops = PL_runops;
		906	dSP;
740	GV *gv = CvGV (cx->blk_sub.cv);	907	GV *gv = CvGV (cx->blk_sub.cv);
741	SV *fullname = sv_2mortal (newSV (0));	908	SV *fullname = sv_2mortal (newSV (0));
		909
742	if (isGV (gv))	910	if (isGV (gv))
743	gv_efullname3 (fullname, gv, 0);	911	gv_efullname3 (fullname, gv, 0);
744		912
		913	PL_runops = RUNOPS_DEFAULT;
		914	ENTER;
		915	SAVETMPS;
		916	EXTEND (SP, 3);
		917	PUSHMARK (SP);
		918	PUSHs (&PL_sv_yes);
		919	PUSHs (fullname);
		920	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		921	PUTBACK;
		922	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		923	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		924	SPAGAIN;
		925	FREETMPS;
		926	LEAVE;
		927	PL_runops = runops_trace;
		928	}
		929
		930	oldcxix = cxstack_ix;
		931	}
		932
		933	if (cctx->flags & CC_TRACE_LINE)
		934	{
		935	dSP;
		936
		937	PL_runops = RUNOPS_DEFAULT;
		938	ENTER;
		939	SAVETMPS;
		940	EXTEND (SP, 3);
		941	PL_runops = RUNOPS_DEFAULT;
745	PUSHMARK (SP);	942	PUSHMARK (SP);
746	PUSHs (&PL_sv_yes);	943	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
747	PUSHs (fullname);	944	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
748	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
749	PUTBACK;	945	PUTBACK;
750	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	946	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
751	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	947	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
752	SPAGAIN;	948	SPAGAIN;
		949	FREETMPS;
		950	LEAVE;
		951	PL_runops = runops_trace;
753	}	952	}
754
755	oldcxix = cxstack_ix;
756	}	953	}
757
758	if (cctx->flags & CC_TRACE_LINE)
759	{
760	PUSHMARK (SP);
761	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
762	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
763	PUTBACK;
764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
766	SPAGAIN;
767	}
768
769	FREETMPS;
770	LEAVE;
771	PL_runops = old_runops;
772	}	954	}
773	}	955	}
774	}	956	}
775		957
776	TAINT_NOT;	958	TAINT_NOT;
…		…
779		961
780	/* inject a fake call to Coro::State::_cctx_init into the execution */	962	/* inject a fake call to Coro::State::_cctx_init into the execution */
781	/* _cctx_init should be careful, as it could be called at almost any time */	963	/* _cctx_init should be careful, as it could be called at almost any time */
782	/* during execution of a perl program */	964	/* during execution of a perl program */
783	static void NOINLINE	965	static void NOINLINE
784	prepare_cctx (pTHX_ coro_cctx *cctx)	966	cctx_prepare (pTHX_ coro_cctx *cctx)
785	{	967	{
786	dSP;	968	dSP;
787	LOGOP myop;	969	LOGOP myop;
788		970
789	PL_top_env = &PL_start_env;	971	PL_top_env = &PL_start_env;
…		…
807		989
808	/*	990	/*
809	* this is a _very_ stripped down perl interpreter ;)	991	* this is a _very_ stripped down perl interpreter ;)
810	*/	992	*/
811	static void	993	static void
812	coro_run (void *arg)	994	cctx_run (void *arg)
813	{	995	{
814	dTHX;	996	dTHX;
815		997
816	/* coro_run is the alternative tail of transfer(), so unlock here. */	998	/* cctx_run is the alternative tail of transfer(), so unlock here. */
817	UNLOCK;	999	UNLOCK;
818		1000
819	/* we now skip the entersub that lead to transfer() */	1001	/* we now skip the entersub that lead to transfer() */
820	PL_op = PL_op->op_next;	1002	PL_op = PL_op->op_next;
821		1003
822	/* inject a fake subroutine call to cctx_init */	1004	/* inject a fake subroutine call to cctx_init */
823	prepare_cctx (aTHX_ (coro_cctx *)arg);	1005	cctx_prepare (aTHX_ (coro_cctx *)arg);
824		1006
825	/* somebody or something will hit me for both perl_run and PL_restartop */	1007	/* somebody or something will hit me for both perl_run and PL_restartop */
826	PL_restartop = PL_op;	1008	PL_restartop = PL_op;
827	perl_run (PL_curinterp);	1009	perl_run (PL_curinterp);
828		1010
…		…
847	++cctx_count;	1029	++cctx_count;
848		1030
849	Newz (0, cctx, 1, coro_cctx);	1031	Newz (0, cctx, 1, coro_cctx);
850		1032
851	#if HAVE_MMAP	1033	#if HAVE_MMAP
852
853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1034	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
854	/* mmap supposedly does allocate-on-write for us */	1035	/* mmap supposedly does allocate-on-write for us */
855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1036	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
856		1037
857	if (cctx->sptr != (void *)-1)	1038	if (cctx->sptr != (void *)-1)
…		…
878	stack_start = cctx->sptr;	1059	stack_start = cctx->sptr;
879	stack_size = cctx->ssize;	1060	stack_size = cctx->ssize;
880	}	1061	}
881		1062
882	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1063	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1064	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
884		1065
885	return cctx;	1066	return cctx;
886	}	1067	}
887		1068
888	static void	1069	static void
…		…
905	Safefree (cctx->sptr);	1086	Safefree (cctx->sptr);
906		1087
907	Safefree (cctx);	1088	Safefree (cctx);
908	}	1089	}
909		1090
		1091	/* wether this cctx should be destructed */
		1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1093
910	static coro_cctx *	1094	static coro_cctx *
911	cctx_get (pTHX)	1095	cctx_get (pTHX)
912	{	1096	{
913	while (cctx_first)	1097	while (expect_true (cctx_first))
914	{	1098	{
915	coro_cctx *cctx = cctx_first;	1099	coro_cctx *cctx = cctx_first;
916	cctx_first = cctx->next;	1100	cctx_first = cctx->next;
917	--cctx_idle;	1101	--cctx_idle;
918		1102
919	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1103	if (expect_true (!CCTX_EXPIRED (cctx)))
920	return cctx;	1104	return cctx;
921		1105
922	cctx_destroy (cctx);	1106	cctx_destroy (cctx);
923	}	1107	}
924		1108
…		…
927		1111
928	static void	1112	static void
929	cctx_put (coro_cctx *cctx)	1113	cctx_put (coro_cctx *cctx)
930	{	1114	{
931	/* free another cctx if overlimit */	1115	/* free another cctx if overlimit */
932	if (cctx_idle >= MAX_IDLE_CCTX)	1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
933	{	1117	{
934	coro_cctx *first = cctx_first;	1118	coro_cctx *first = cctx_first;
935	cctx_first = first->next;	1119	cctx_first = first->next;
936	--cctx_idle;	1120	--cctx_idle;
937		1121
…		…
943	cctx_first = cctx;	1127	cctx_first = cctx;
944	}	1128	}
945		1129
946	/ coroutine switching ***************************************************/	1130	/ coroutine switching ***************************************************/
947		1131
948	static void NOINLINE	1132	static void
949	transfer_check (pTHX_ struct coro prev, struct coro next)	1133	transfer_check (pTHX_ struct coro prev, struct coro next)
950	{	1134	{
951	if (prev != next)	1135	if (expect_true (prev != next))
952	{	1136	{
953	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))	1137	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
954	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1138	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
955		1139
956	if (next->flags & CF_RUNNING)	1140	if (expect_false (next->flags & CF_RUNNING))
957	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1141	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
958		1142
959	if (next->flags & CF_DESTROYED)	1143	if (expect_false (next->flags & CF_DESTROYED))
960	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1144	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
961		1145
		1146	#if !PERL_VERSION_ATLEAST (5,10,0)
962	if (PL_lex_state != LEX_NOTPARSING)	1147	if (expect_false (PL_lex_state != LEX_NOTPARSING))
963	croak ("Coro::State::transfer called while parsing, but this is not supported");	1148	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1149	#endif
964	}	1150	}
965	}	1151	}
966		1152
967	/* always use the TRANSFER macro */	1153	/* always use the TRANSFER macro */
968	static void NOINLINE	1154	static void NOINLINE
969	transfer (pTHX_ struct coro prev, struct coro next)	1155	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
970	{	1156	{
971	dSTACKLEVEL;	1157	dSTACKLEVEL;
		1158	static volatile int has_throw;
972		1159
973	/* sometimes transfer is only called to set idle_sp */	1160	/* sometimes transfer is only called to set idle_sp */
974	if (!next)	1161	if (expect_false (!next))
975	{	1162	{
976	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
977	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1164	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
978	}	1165	}
979	else if (prev != next)	1166	else if (expect_true (prev != next))
980	{	1167	{
981	coro_cctx *prev__cctx;	1168	coro_cctx *prev__cctx;
982		1169
983	if (prev->flags & CF_NEW)	1170	if (expect_false (prev->flags & CF_NEW))
984	{	1171	{
985	/* create a new empty context */	1172	/* create a new empty context */
986	Newz (0, prev->cctx, 1, coro_cctx);	1173	Newz (0, prev->cctx, 1, coro_cctx);
987	prev->flags &= ~CF_NEW;	1174	prev->flags &= ~CF_NEW;
988	prev->flags \|= CF_RUNNING;	1175	prev->flags \|= CF_RUNNING;
…		…
991	prev->flags &= ~CF_RUNNING;	1178	prev->flags &= ~CF_RUNNING;
992	next->flags \|= CF_RUNNING;	1179	next->flags \|= CF_RUNNING;
993		1180
994	LOCK;	1181	LOCK;
995		1182
		1183	/* first get rid of the old state */
		1184	save_perl (aTHX_ prev);
		1185
996	if (next->flags & CF_NEW)	1186	if (expect_false (next->flags & CF_NEW))
997	{	1187	{
998	/* need to start coroutine */	1188	/* need to start coroutine */
999	next->flags &= ~CF_NEW;	1189	next->flags &= ~CF_NEW;
1000	/* first get rid of the old state */
1001	save_perl (aTHX_ prev);
1002	/* setup coroutine call */	1190	/* setup coroutine call */
1003	setup_coro (aTHX_ next);	1191	coro_setup (aTHX_ next);
1004	}	1192	}
1005	else	1193	else
1006	{
1007	/* coroutine already started */
1008	save_perl (aTHX_ prev);
1009	load_perl (aTHX_ next);	1194	load_perl (aTHX_ next);
1010	}
1011		1195
1012	prev__cctx = prev->cctx;	1196	prev__cctx = prev->cctx;
1013		1197
1014	/* possibly "free" the cctx */	1198	/* possibly "free" the cctx */
1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1199	if (expect_true (
		1200	prev__cctx->idle_sp == STACKLEVEL
		1201	&& !(prev__cctx->flags & CC_TRACE)
		1202	&& !force_cctx
		1203	))
1016	{	1204	{
1017	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1205	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1018	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1206	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1019		1207
1020	prev->cctx = 0;	1208	prev->cctx = 0;
1021		1209
		1210	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1211	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1212	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1213	if (!next->cctx)
		1214	next->cctx = cctx_get (aTHX);
		1215
1022	cctx_put (prev__cctx);	1216	cctx_put (prev__cctx);
1023	}	1217	}
1024		1218
1025	++next->usecount;	1219	++next->usecount;
1026		1220
1027	if (!next->cctx)	1221	if (expect_true (!next->cctx))
1028	next->cctx = cctx_get (aTHX);	1222	next->cctx = cctx_get (aTHX);
1029		1223
		1224	has_throw = !!next->throw;
		1225
1030	if (prev__cctx != next->cctx)	1226	if (expect_false (prev__cctx != next->cctx))
1031	{	1227	{
1032	prev__cctx->top_env = PL_top_env;	1228	prev__cctx->top_env = PL_top_env;
1033	PL_top_env = next->cctx->top_env;	1229	PL_top_env = next->cctx->top_env;
1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1035	}	1231	}
1036		1232
1037	free_coro_mortal (aTHX);	1233	free_coro_mortal (aTHX);
1038	UNLOCK;	1234	UNLOCK;
		1235
		1236	if (expect_false (has_throw))
		1237	{
		1238	struct coro *coro = SvSTATE (coro_current);
		1239
		1240	if (coro->throw)
		1241	{
		1242	SV *exception = coro->throw;
		1243	coro->throw = 0;
		1244	sv_setsv (ERRSV, exception);
		1245	croak (0);
		1246	}
		1247	}
1039	}	1248	}
1040	}	1249	}
1041		1250
1042	struct transfer_args	1251	struct transfer_args
1043	{	1252	{
1044	struct coro prev, next;	1253	struct coro prev, next;
1045	};	1254	};
1046		1255
1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1257	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1049		1258
1050	/ high level stuff ******************************************************/	1259	/ high level stuff ******************************************************/
1051		1260
1052	static int	1261	static int
…		…
1070		1279
1071	if (coro->mainstack && coro->mainstack != main_mainstack)	1280	if (coro->mainstack && coro->mainstack != main_mainstack)
1072	{	1281	{
1073	struct coro temp;	1282	struct coro temp;
1074		1283
1075	assert (!(coro->flags & CF_RUNNING));
1076
1077	Zero (&temp, 1, struct coro);
1078	temp.save = CORO_SAVE_ALL;
1079
1080	if (coro->flags & CF_RUNNING)	1284	if (coro->flags & CF_RUNNING)
1081	croak ("FATAL: tried to destroy currently running coroutine");	1285	croak ("FATAL: tried to destroy currently running coroutine");
1082		1286
1083	save_perl (aTHX_ &temp);	1287	save_perl (aTHX_ &temp);
1084	load_perl (aTHX_ coro);	1288	load_perl (aTHX_ coro);
1085		1289
1086	coro_destroy_stacks (aTHX);	1290	coro_destroy (aTHX_ coro);
1087		1291
1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1292	load_perl (aTHX_ &temp);
1089		1293
1090	coro->mainstack = 0;	1294	coro->slot = 0;
1091	}	1295	}
1092		1296
1093	cctx_destroy (coro->cctx);	1297	cctx_destroy (coro->cctx);
1094	SvREFCNT_dec (coro->args);	1298	SvREFCNT_dec (coro->args);
1095		1299
…		…
1151	{	1355	{
1152	dTHX;	1356	dTHX;
1153	struct transfer_args ta;	1357	struct transfer_args ta;
1154		1358
1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1359	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1156	TRANSFER (ta);	1360	TRANSFER (ta, 1);
1157	}
1158
1159	static int
1160	api_save (SV *coro_sv, int new_save)
1161	{
1162	dTHX;
1163	struct coro *coro = SvSTATE (coro_sv);
1164	int old_save = coro->save;
1165
1166	if (new_save >= 0)
1167	coro->save = new_save;
1168
1169	return old_save;
1170	}	1361	}
1171		1362
1172	/ Coro ******************************************************************/	1363	/ Coro ******************************************************************/
1173		1364
1174	static void	1365	static void
…		…
1176	{	1367	{
1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1368	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1178	}	1369	}
1179		1370
1180	static SV *	1371	static SV *
1181	coro_deq (pTHX_ int min_prio)	1372	coro_deq (pTHX)
1182	{	1373	{
1183	int prio = PRIO_MAX - PRIO_MIN;	1374	int prio;
1184		1375
1185	min_prio -= PRIO_MIN;
1186	if (min_prio < 0)
1187	min_prio = 0;
1188
1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1376	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1190	if (AvFILLp (coro_ready [prio]) >= 0)	1377	if (AvFILLp (coro_ready [prio]) >= 0)
1191	return av_shift (coro_ready [prio]);	1378	return av_shift (coro_ready [prio]);
1192		1379
1193	return 0;	1380	return 0;
1194	}	1381	}
…		…
1196	static int	1383	static int
1197	api_ready (SV *coro_sv)	1384	api_ready (SV *coro_sv)
1198	{	1385	{
1199	dTHX;	1386	dTHX;
1200	struct coro *coro;	1387	struct coro *coro;
		1388	SV *hook;
1201		1389
1202	if (SvROK (coro_sv))	1390	if (SvROK (coro_sv))
1203	coro_sv = SvRV (coro_sv);	1391	coro_sv = SvRV (coro_sv);
1204		1392
1205	coro = SvSTATE (coro_sv);	1393	coro = SvSTATE (coro_sv);
…		…
1208	return 0;	1396	return 0;
1209		1397
1210	coro->flags \|= CF_READY;	1398	coro->flags \|= CF_READY;
1211		1399
1212	LOCK;	1400	LOCK;
		1401
		1402	hook = coro_nready ? 0 : coro_readyhook;
		1403
1213	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1404	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1214	++coro_nready;	1405	++coro_nready;
		1406
1215	UNLOCK;	1407	UNLOCK;
		1408
		1409	if (hook)
		1410	{
		1411	dSP;
		1412
		1413	ENTER;
		1414	SAVETMPS;
		1415
		1416	PUSHMARK (SP);
		1417	PUTBACK;
		1418	call_sv (hook, G_DISCARD);
		1419	SPAGAIN;
		1420
		1421	FREETMPS;
		1422	LEAVE;
		1423	}
1216		1424
1217	return 1;	1425	return 1;
1218	}	1426	}
1219		1427
1220	static int	1428	static int
…		…
1230	SV prev_sv, next_sv;	1438	SV prev_sv, next_sv;
1231		1439
1232	for (;;)	1440	for (;;)
1233	{	1441	{
1234	LOCK;	1442	LOCK;
1235	next_sv = coro_deq (aTHX_ PRIO_MIN);	1443	next_sv = coro_deq (aTHX);
1236		1444
1237	/* nothing to schedule: call the idle handler */	1445	/* nothing to schedule: call the idle handler */
1238	if (!next_sv)	1446	if (expect_false (!next_sv))
1239	{	1447	{
1240	dSP;	1448	dSP;
1241	UNLOCK;	1449	UNLOCK;
1242		1450
1243	ENTER;	1451	ENTER;
1244	SAVETMPS;	1452	SAVETMPS;
1245		1453
1246	PUSHMARK (SP);	1454	PUSHMARK (SP);
1247	PUTBACK;	1455	PUTBACK;
1248	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1456	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1457	SPAGAIN;
1249		1458
1250	FREETMPS;	1459	FREETMPS;
1251	LEAVE;	1460	LEAVE;
1252	continue;	1461	continue;
1253	}	1462	}
1254		1463
1255	ta->next = SvSTATE (next_sv);	1464	ta->next = SvSTATE (next_sv);
1256		1465
1257	/* cannot transfer to destroyed coros, skip and look for next */	1466	/* cannot transfer to destroyed coros, skip and look for next */
1258	if (ta->next->flags & CF_DESTROYED)	1467	if (expect_false (ta->next->flags & CF_DESTROYED))
1259	{	1468	{
1260	UNLOCK;	1469	UNLOCK;
1261	SvREFCNT_dec (next_sv);	1470	SvREFCNT_dec (next_sv);
1262	/* coro_nready is already taken care of by destroy */	1471	/* coro_nready is already taken care of by destroy */
1263	continue;	1472	continue;
…		…
1308	{	1517	{
1309	dTHX;	1518	dTHX;
1310	struct transfer_args ta;	1519	struct transfer_args ta;
1311		1520
1312	prepare_schedule (aTHX_ &ta);	1521	prepare_schedule (aTHX_ &ta);
1313	TRANSFER (ta);	1522	TRANSFER (ta, 1);
1314	}	1523	}
1315		1524
1316	static int	1525	static int
1317	api_cede (void)	1526	api_cede (void)
1318	{	1527	{
1319	dTHX;	1528	dTHX;
1320	struct transfer_args ta;	1529	struct transfer_args ta;
1321		1530
1322	prepare_cede (aTHX_ &ta);	1531	prepare_cede (aTHX_ &ta);
1323		1532
1324	if (ta.prev != ta.next)	1533	if (expect_true (ta.prev != ta.next))
1325	{	1534	{
1326	TRANSFER (ta);	1535	TRANSFER (ta, 1);
1327	return 1;	1536	return 1;
1328	}	1537	}
1329	else	1538	else
1330	return 0;	1539	return 0;
1331	}	1540	}
…		…
1336	dTHX;	1545	dTHX;
1337	struct transfer_args ta;	1546	struct transfer_args ta;
1338		1547
1339	if (prepare_cede_notself (aTHX_ &ta))	1548	if (prepare_cede_notself (aTHX_ &ta))
1340	{	1549	{
1341	TRANSFER (ta);	1550	TRANSFER (ta, 1);
1342	return 1;	1551	return 1;
1343	}	1552	}
1344	else	1553	else
1345	return 0;	1554	return 0;
1346	}	1555	}
1347		1556
		1557	static void
		1558	api_trace (SV *coro_sv, int flags)
		1559	{
		1560	dTHX;
		1561	struct coro *coro = SvSTATE (coro_sv);
		1562
		1563	if (flags & CC_TRACE)
		1564	{
		1565	if (!coro->cctx)
		1566	coro->cctx = cctx_new ();
		1567	else if (!(coro->cctx->flags & CC_TRACE))
		1568	croak ("cannot enable tracing on coroutine with custom stack");
		1569
		1570	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1571	}
		1572	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1573	{
		1574	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1575
		1576	if (coro->flags & CF_RUNNING)
		1577	PL_runops = RUNOPS_DEFAULT;
		1578	else
		1579	coro->slot->runops = RUNOPS_DEFAULT;
		1580	}
		1581	}
		1582
1348	MODULE = Coro::State PACKAGE = Coro::State	1583	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1349		1584
1350	PROTOTYPES: DISABLE	1585	PROTOTYPES: DISABLE
1351		1586
1352	BOOT:	1587	BOOT:
1353	{	1588	{
1354	#ifdef USE_ITHREADS	1589	#ifdef USE_ITHREADS
1355	MUTEX_INIT (&coro_mutex);	1590	MUTEX_INIT (&coro_mutex);
1356	#endif	1591	#endif
1357	BOOT_PAGESIZE;	1592	BOOT_PAGESIZE;
		1593
		1594	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1595	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1596
		1597	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1598	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1599	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1600	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1601
		1602	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1603	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1604	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1358		1605
1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1606	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1360		1607
1361	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1608	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1362	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1609	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1363	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1610	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1364	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1611	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1365		1612
1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1368	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1369	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1370	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1373
1374	main_mainstack = PL_mainstack;	1613	main_mainstack = PL_mainstack;
1375	main_top_env = PL_top_env;	1614	main_top_env = PL_top_env;
1376		1615
1377	while (main_top_env->je_prev)	1616	while (main_top_env->je_prev)
1378	main_top_env = main_top_env->je_prev;	1617	main_top_env = main_top_env->je_prev;
1379		1618
1380	coroapi.ver = CORO_API_VERSION;	1619	coroapi.ver = CORO_API_VERSION;
		1620	coroapi.rev = CORO_API_REVISION;
1381	coroapi.transfer = api_transfer;	1621	coroapi.transfer = api_transfer;
1382		1622
1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1623	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1384	}	1624	}
1385		1625
1386	SV *	1626	SV *
1387	new (char *klass, ...)	1627	new (char *klass, ...)
1388	CODE:	1628	CODE:
1389	{	1629	{
1390	struct coro *coro;	1630	struct coro *coro;
		1631	MAGIC *mg;
1391	HV *hv;	1632	HV *hv;
1392	int i;	1633	int i;
1393		1634
1394	Newz (0, coro, 1, struct coro);	1635	Newz (0, coro, 1, struct coro);
1395	coro->args = newAV ();	1636	coro->args = newAV ();
1396	coro->save = CORO_SAVE_DEF;
1397	coro->flags = CF_NEW;	1637	coro->flags = CF_NEW;
1398		1638
1399	if (coro_first) coro_first->prev = coro;	1639	if (coro_first) coro_first->prev = coro;
1400	coro->next = coro_first;	1640	coro->next = coro_first;
1401	coro_first = coro;	1641	coro_first = coro;
1402		1642
1403	coro->hv = hv = newHV ();	1643	coro->hv = hv = newHV ();
1404	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1644	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1645	mg->mg_flags \|= MGf_DUP;
1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1646	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1406		1647
		1648	av_extend (coro->args, items - 1);
1407	for (i = 1; i < items; i++)	1649	for (i = 1; i < items; i++)
1408	av_push (coro->args, newSVsv (ST (i)));	1650	av_push (coro->args, newSVsv (ST (i)));
1409	}	1651	}
1410	OUTPUT:	1652	OUTPUT:
1411	RETVAL	1653	RETVAL
1412		1654
1413	int	1655	# these not obviously related functions are all rolled into the same xs
1414	save (SV *coro, int new_save = -1)	1656	# function to increase chances that they all will call transfer with the same
1415	CODE:	1657	# stack offset
1416	RETVAL = api_save (coro, new_save);
1417	OUTPUT:
1418	RETVAL
1419
1420	int
1421	save_also (SV *coro_sv, int save_also)
1422	CODE:
1423	{
1424	struct coro *coro = SvSTATE (coro_sv);
1425	RETVAL = coro->save;
1426	coro->save \|= save_also;
1427	}
1428	OUTPUT:
1429	RETVAL
1430
1431	void	1658	void
1432	_set_stacklevel (...)	1659	_set_stacklevel (...)
1433	ALIAS:	1660	ALIAS:
1434	Coro::State::transfer = 1	1661	Coro::State::transfer = 1
1435	Coro::schedule = 2	1662	Coro::schedule = 2
…		…
1437	Coro::cede_notself = 4	1664	Coro::cede_notself = 4
1438	CODE:	1665	CODE:
1439	{	1666	{
1440	struct transfer_args ta;	1667	struct transfer_args ta;
1441		1668
		1669	PUTBACK;
1442	switch (ix)	1670	switch (ix)
1443	{	1671	{
1444	case 0:	1672	case 0:
1445	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1673	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1446	ta.next = 0;	1674	ta.next = 0;
…		…
1465	if (!prepare_cede_notself (aTHX_ &ta))	1693	if (!prepare_cede_notself (aTHX_ &ta))
1466	XSRETURN_EMPTY;	1694	XSRETURN_EMPTY;
1467		1695
1468	break;	1696	break;
1469	}	1697	}
		1698	SPAGAIN;
1470		1699
1471	BARRIER;	1700	BARRIER;
		1701	PUTBACK;
1472	TRANSFER (ta);	1702	TRANSFER (ta, 0);
1473		1703	SPAGAIN; /* might be the sp of a different coroutine now */
1474	if (GIMME_V != G_VOID && ta.next != ta.prev)	1704	/* be extra careful not to ever do anything after TRANSFER */
1475	XSRETURN_YES;
1476	}	1705	}
1477		1706
1478	bool	1707	bool
1479	_destroy (SV *coro_sv)	1708	_destroy (SV *coro_sv)
1480	CODE:	1709	CODE:
1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1710	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1482	OUTPUT:	1711	OUTPUT:
1483	RETVAL	1712	RETVAL
1484		1713
1485	void	1714	void
1486	_exit (code)	1715	_exit (int code)
1487	int code
1488	PROTOTYPE: $	1716	PROTOTYPE: $
1489	CODE:	1717	CODE:
1490	_exit (code);	1718	_exit (code);
1491		1719
1492	int	1720	int
…		…
1529	CODE:	1757	CODE:
1530	{	1758	{
1531	if (coro->mainstack)	1759	if (coro->mainstack)
1532	{	1760	{
1533	struct coro temp;	1761	struct coro temp;
1534	Zero (&temp, 1, struct coro);
1535	temp.save = CORO_SAVE_ALL;
1536		1762
1537	if (!(coro->flags & CF_RUNNING))	1763	if (!(coro->flags & CF_RUNNING))
1538	{	1764	{
		1765	PUTBACK;
1539	save_perl (aTHX_ &temp);	1766	save_perl (aTHX_ &temp);
1540	load_perl (aTHX_ coro);	1767	load_perl (aTHX_ coro);
1541	}	1768	}
1542		1769
1543	{	1770	{
1544	dSP;	1771	dSP;
1545	ENTER;	1772	ENTER;
1546	SAVETMPS;	1773	SAVETMPS;
		1774	PUTBACK;
		1775	PUSHSTACK;
1547	PUSHMARK (SP);	1776	PUSHMARK (SP);
1548	PUTBACK;	1777
1549	if (ix)	1778	if (ix)
1550	eval_sv (coderef, 0);	1779	eval_sv (coderef, 0);
1551	else	1780	else
1552	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1781	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1782
		1783	POPSTACK;
1553	SPAGAIN;	1784	SPAGAIN;
1554	FREETMPS;	1785	FREETMPS;
1555	LEAVE;	1786	LEAVE;
1556	PUTBACK;	1787	PUTBACK;
1557	}	1788	}
1558		1789
1559	if (!(coro->flags & CF_RUNNING))	1790	if (!(coro->flags & CF_RUNNING))
1560	{	1791	{
1561	save_perl (aTHX_ coro);	1792	save_perl (aTHX_ coro);
1562	load_perl (aTHX_ &temp);	1793	load_perl (aTHX_ &temp);
		1794	SPAGAIN;
1563	}	1795	}
1564	}	1796	}
1565	}	1797	}
1566		1798
1567	SV *	1799	SV *
…		…
1576	RETVAL = boolSV (coro->flags & ix);	1808	RETVAL = boolSV (coro->flags & ix);
1577	OUTPUT:	1809	OUTPUT:
1578	RETVAL	1810	RETVAL
1579		1811
1580	void	1812	void
1581	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)	1813	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
1582	CODE:
1583	if (flags & CC_TRACE)
1584	{
1585	if (!coro->cctx)
1586	coro->cctx = cctx_new ();
1587	else if (!(coro->cctx->flags & CC_TRACE))
1588	croak ("cannot enable tracing on coroutine with custom stack");
1589
1590	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
1591	}
1592	else
1593	if (coro->cctx && coro->cctx->flags & CC_TRACE)
1594	{
1595	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
1596	coro->cctx->flags \|= CC_NOREUSE;
1597
1598	if (coro->flags & CF_RUNNING)
1599	PL_runops = RUNOPS_DEFAULT;
1600	else
1601	coro->runops = RUNOPS_DEFAULT;
1602	}
1603		1814
1604	SV *	1815	SV *
1605	has_stack (Coro::State coro)	1816	has_cctx (Coro::State coro)
1606	PROTOTYPE: $	1817	PROTOTYPE: $
1607	CODE:	1818	CODE:
1608	RETVAL = boolSV (!!coro->cctx);	1819	RETVAL = boolSV (!!coro->cctx);
1609	OUTPUT:	1820	OUTPUT:
1610	RETVAL	1821	RETVAL
…		…
1629	case 1: RETVAL = coro->usecount; break;	1840	case 1: RETVAL = coro->usecount; break;
1630	}	1841	}
1631	OUTPUT:	1842	OUTPUT:
1632	RETVAL	1843	RETVAL
1633		1844
		1845	void
		1846	force_cctx ()
		1847	CODE:
		1848	struct coro *coro = SvSTATE (coro_current);
		1849	coro->cctx->idle_sp = 0;
1634		1850
1635	MODULE = Coro::State PACKAGE = Coro	1851	MODULE = Coro::State PACKAGE = Coro
1636		1852
1637	BOOT:	1853	BOOT:
1638	{	1854	{
1639	int i;	1855	int i;
1640		1856
1641	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1642	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1643	av_async_pool = get_av ("Coro::async_pool", TRUE);	1857	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1858	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1859	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1644		1860
1645	coro_current = get_sv ("Coro::current", FALSE);	1861	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1646	SvREADONLY_on (coro_current);	1862	SvREADONLY_on (coro_current);
1647		1863
1648	coro_stash = gv_stashpv ("Coro", TRUE);	1864	coro_stash = gv_stashpv ("Coro", TRUE);
1649		1865
1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1866	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1867	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1868	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1869	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1656		1872
1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1873	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1658	coro_ready[i] = newAV ();	1874	coro_ready[i] = newAV ();
1659		1875
1660	{	1876	{
1661	SV *sv = perl_get_sv("Coro::API", 1);	1877	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1878	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1662		1879
1663	coroapi.schedule = api_schedule;	1880	coroapi.schedule = api_schedule;
1664	coroapi.save = api_save;
1665	coroapi.cede = api_cede;	1881	coroapi.cede = api_cede;
1666	coroapi.cede_notself = api_cede_notself;	1882	coroapi.cede_notself = api_cede_notself;
1667	coroapi.ready = api_ready;	1883	coroapi.ready = api_ready;
1668	coroapi.is_ready = api_is_ready;	1884	coroapi.is_ready = api_is_ready;
1669	coroapi.nready = &coro_nready;	1885	coroapi.nready = &coro_nready;
…		…
1679	_set_current (SV *current)	1895	_set_current (SV *current)
1680	PROTOTYPE: $	1896	PROTOTYPE: $
1681	CODE:	1897	CODE:
1682	SvREFCNT_dec (SvRV (coro_current));	1898	SvREFCNT_dec (SvRV (coro_current));
1683	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1899	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1900
		1901	void
		1902	_set_readyhook (SV *hook)
		1903	PROTOTYPE: $
		1904	CODE:
		1905	LOCK;
		1906	if (coro_readyhook)
		1907	SvREFCNT_dec (coro_readyhook);
		1908	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1909	UNLOCK;
1684		1910
1685	int	1911	int
1686	prio (Coro::State coro, int newprio = 0)	1912	prio (Coro::State coro, int newprio = 0)
1687	ALIAS:	1913	ALIAS:
1688	nice = 1	1914	nice = 1
…		…
1718	CODE:	1944	CODE:
1719	RETVAL = coro_nready;	1945	RETVAL = coro_nready;
1720	OUTPUT:	1946	OUTPUT:
1721	RETVAL	1947	RETVAL
1722		1948
		1949	void
		1950	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1951	PROTOTYPE: $;$
		1952	CODE:
		1953	SvREFCNT_dec (self->throw);
		1954	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1955
		1956	void
		1957	swap_defsv (Coro::State self)
		1958	PROTOTYPE: $
		1959	ALIAS:
		1960	swap_defav = 1
		1961	CODE:
		1962	if (!self->slot)
		1963	croak ("cannot swap state with coroutine that has no saved state");
		1964	else
		1965	{
		1966	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1967	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1968
		1969	SV tmp = src; src = dst; *dst = tmp;
		1970	}
		1971
1723	# for async_pool speedup	1972	# for async_pool speedup
1724	void	1973	void
1725	_pool_1 (SV *cb)	1974	_pool_1 (SV *cb)
1726	CODE:	1975	CODE:
1727	{	1976	{
1728	int i, len;	1977	struct coro *coro = SvSTATE (coro_current);
1729	HV hv = (HV )SvRV (coro_current);	1978	HV hv = (HV )SvRV (coro_current);
1730	AV *defav = GvAV (PL_defgv);	1979	AV *defav = GvAV (PL_defgv);
1731	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1980	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1732	AV *invoke_av;	1981	AV *invoke_av;
		1982	int i, len;
1733		1983
1734	if (!invoke)	1984	if (!invoke)
		1985	{
		1986	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1735	croak ("\3terminate\2\n");	1987	croak ("\3async_pool terminate\2\n");
		1988	}
		1989
		1990	SvREFCNT_dec (coro->saved_deffh);
		1991	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1736		1992
1737	hv_store (hv, "desc", sizeof ("desc") - 1,	1993	hv_store (hv, "desc", sizeof ("desc") - 1,
1738	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	1994	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1739		1995
1740	invoke_av = (AV *)SvRV (invoke);	1996	invoke_av = (AV *)SvRV (invoke);
…		…
1758	{	2014	{
1759	struct coro *coro = SvSTATE (coro_current);	2015	struct coro *coro = SvSTATE (coro_current);
1760		2016
1761	sv_setsv (cb, &PL_sv_undef);	2017	sv_setsv (cb, &PL_sv_undef);
1762		2018
		2019	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		2020	coro->saved_deffh = 0;
		2021
1763	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2022	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1764	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2023	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2024	{
		2025	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1765	croak ("\3terminate\2\n");	2026	croak ("\3async_pool terminate\2\n");
		2027	}
1766		2028
1767	av_clear (GvAV (PL_defgv));	2029	av_clear (GvAV (PL_defgv));
1768	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2030	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1769	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2031	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1770	coro->save = CORO_SAVE_DEF;	2032
1771	coro->prio = 0;	2033	coro->prio = 0;
		2034
		2035	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2036	api_trace (coro_current, 0);
		2037
1772	av_push (av_async_pool, newSVsv (coro_current));	2038	av_push (av_async_pool, newSVsv (coro_current));
1773	}	2039	}
1774		2040
1775		2041
1776	MODULE = Coro::State PACKAGE = Coro::AIO	2042	MODULE = Coro::State PACKAGE = Coro::AIO
…		…
1805	PL_laststype = data->laststype;	2071	PL_laststype = data->laststype;
1806	PL_laststatval = data->laststatval;	2072	PL_laststatval = data->laststatval;
1807	PL_statcache = data->statcache;	2073	PL_statcache = data->statcache;
1808	}	2074	}
1809		2075
		2076
		2077	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2078
		2079	BOOT:
		2080	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2081
		2082	SV *
		2083	_schedule ()
		2084	PROTOTYPE: @
		2085	CODE:
		2086	{
		2087	static int incede;
		2088	fprintf (stderr, "_schedule\n");//D
		2089
		2090	api_cede_notself ();
		2091
		2092	++incede;
		2093	while (coro_nready >= incede && api_cede ())
		2094	;
		2095
		2096	sv_setsv (sv_activity, &PL_sv_undef);
		2097	if (coro_nready >= incede)
		2098	{
		2099	PUSHMARK (SP);
		2100	PUTBACK;
		2101	fprintf (stderr, "call act %d >= %d\n", coro_nready, incede);//D
		2102	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2103	SPAGAIN;
		2104	}
		2105
		2106	--incede;
		2107	}
		2108

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Comparing Coro/Coro/State.xs (file contents): Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC vs. Revision 1.234 by root, Fri May 9 22:29:05 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC vs.
Revision 1.234 by root, Fri May 9 22:29:05 2008 UTC