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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.168 by root, Thu Sep 27 16:10:48 2007 UTC vs.
Revision 1.236 by root, Sat May 10 17:43:41 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 */
		243	HV *hv; /* the perl hash associated with this coro, if any */
191		244
192	/* optionally saved, might be zero */	245	/* statistics */
193	AV *defav; /* @_ */	246	int usecount; /* number of transfers to this coro */
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		247
204	/* coro process data */	248	/* coro process data */
205	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
206		254
207	/* linked list */	255	/* linked list */
208	struct coro *next, *prev;	256	struct coro *next, *prev;
209	HV *hv; /* the perl hash associated with this coro, if any */
210	};	257	};
211		258
212	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
213	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
214		261
…		…
221	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
222	#define PRIO_MIN -4	269	#define PRIO_MIN -4
223		270
224	/* for Coro.pm */	271	/* for Coro.pm */
225	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
227	static int coro_nready;	275	static int coro_nready;
228	static struct coro *coro_first;	276	static struct coro *coro_first;
229		277
230	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
231		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
232	static AV *	310	static AV *
233	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
234	{	312	{
235	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
236	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
237		315
238	newpadlist = newAV ();	316	newpadlist = newAV ();
239	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
240	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
241	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242	#else	320	#else
243	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244	#endif	322	#endif
245	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
283		361
284	/* casting is fun. */	362	/* casting is fun. */
285	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
287		365
288	SvREFCNT_dec (av);
289
290	return 0;	366	return 0;
291	}	367	}
292		368
293	#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
294		371
295	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	};
296		376
297	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
298	SvMAGIC (cv) \	378	SvMAGIC (sv) \
299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
300	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
302	: 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))
303		412
304	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
305	static void	414	static void
306	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
307	{	416	{
308	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
309	AV *av;	418	AV *av;
310		419
311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
313	else	422	else
314	{	423	{
315	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
316	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
325	}	434	}
326		435
327	static void	436	static void
328	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
329	{	438	{
330	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
331	AV *av;	440	AV *av;
332		441
333	if (!mg)	442	if (expect_false (!mg))
334	{	443	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
335	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
336	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
337	mg->mg_virtual = &vtbl_coro;
338	mg->mg_obj = (SV *)newAV ();
339	}
340		444
341	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
342		446
343	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
344	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
345		449
346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
347	}	451	}
348		452
349	/** load & save, init *******************************************************/	453	/** load & save, init *******************************************************/
350
351	#define SB do {
352	#define SE } while (0)
353
354	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
355		454
356	static void	455	static void
357	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
358	{	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
359	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
360	# include "state.h"	469	# include "state.h"
361	#undef VAR	470	#undef VAR
362
363	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
364	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
365	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
366	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
367
368	if (c->irssv)
369	{
370	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
371	{
372	SvREFCNT_dec (c->irssv);
373	c->irssv = 0;
374	}
375	else
376	{
377	REPLACE_SV (PL_rs, c->irssv);
378	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
379	sv_setsv (c->irssv_sv, PL_rs);
380	}
381	}
382		471
383	{	472	{
384	dSP;	473	dSP;
		474
385	CV *cv;	475	CV *cv;
386		476
387	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
388	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
389	{	479	{
390	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
391	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
392	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
393	}	483	}
…		…
412		502
413	XPUSHs (Nullsv);	503	XPUSHs (Nullsv);
414	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
415	for (;;)	505	for (;;)
416	{	506	{
417	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
418	{	508	{
419	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
420		510
421	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	511	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
422	{	512	{
423	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
424		514
425	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
426	{	516	{
427	EXTEND (SP, 3);	517	EXTEND (SP, 3);
428	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
430	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
431		521
432	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
433	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
434	}	524	}
435	}	525	}
436	}	526	}
437		527
438	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
439	break;	529	break;
440		530
441	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
442	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
443	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
444	}	534	}
445		535
446	PUTBACK;	536	PUTBACK;
447	}	537	}
448		538
449	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 */
450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
451	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
452	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
453	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 */
454		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
455	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
456	# include "state.h"	562	# include "state.h"
457	#undef VAR	563	#undef VAR
		564	}
458	}	565	}
459		566
460	/*	567	/*
461	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
467	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
468	#else	575	#else
469	static void	576	static void
470	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
471	{	578	{
472	PL_curstackinfo = new_stackinfo(64, 6);	579	PL_curstackinfo = new_stackinfo(32, 8);
473	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
474	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
476		583
477	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
478	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
480		587
481	New(50,PL_tmps_stack,64,SV*);	588	New(50,PL_tmps_stack,32,SV*);
482	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
483	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
484	PL_tmps_max = 64;	591	PL_tmps_max = 32;
485		592
486	New(54,PL_markstack,16,I32);	593	New(54,PL_markstack,16,I32);
487	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
488	PL_markstack_max = PL_markstack + 16;	595	PL_markstack_max = PL_markstack + 16;
489		596
490	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
491	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
492	#endif	599	#endif
493		600
494	New(54,PL_scopestack,16,I32);	601	New(54,PL_scopestack,8,I32);
495	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
496	PL_scopestack_max = 16;	603	PL_scopestack_max = 8;
497		604
498	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
499	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
500	PL_savestack_max = 64;	607	PL_savestack_max = 24;
501		608
502	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
503	New(54,PL_retstack,4,OP*);	610	New(54,PL_retstack,4,OP*);
504	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
505	PL_retstack_max = 4;	612	PL_retstack_max = 4;
506	#endif	613	#endif
507	}	614	}
…		…
511	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
512	*/	619	*/
513	static void	620	static void
514	coro_destroy_stacks (pTHX)	621	coro_destroy_stacks (pTHX)
515	{	622	{
516	if (!IN_DESTRUCT)
517	{
518	/* restore all saved variables and stuff */
519	LEAVE_SCOPE (0);
520	assert (PL_tmps_floor == -1);
521
522	/* free all temporaries */
523	FREETMPS;
524	assert (PL_tmps_ix == -1);
525
526	/* unwind all extra stacks */
527	POPSTACK_TO (PL_mainstack);
528
529	/* unwind main stack */
530	dounwind (-1);
531	}
532
533	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
534	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
535		625
536	while (PL_curstackinfo)	626	while (PL_curstackinfo)
537	{	627	{
…		…
547		637
548	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
549	Safefree (PL_markstack);	639	Safefree (PL_markstack);
550	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
551	Safefree (PL_savestack);	641	Safefree (PL_savestack);
552	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
553	Safefree (PL_retstack);	643	Safefree (PL_retstack);
554	#endif	644	#endif
555	}	645	}
556		646
557	static size_t	647	static size_t
558	coro_rss (struct coro *coro)	648	coro_rss (pTHX_ struct coro *coro)
559	{	649	{
560	size_t rss = sizeof (coro);	650	size_t rss = sizeof (*coro);
561		651
562	if (coro->mainstack)	652	if (coro->mainstack)
563	{	653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
564	if (coro->flags & CF_RUNNING)	657	if (coro->flags & CF_RUNNING)
565	{	658	{
		659	slot = &tmp_slot;
		660
566	#define VAR(name,type)coro->name = PL_ ## name;	661	#define VAR(name,type) slot->name = PL_ ## name;
567	# include "state.h"	662	# include "state.h"
568	#undef VAR	663	#undef VAR
569	}	664	}
		665	else
		666	slot = coro->slot;
570		667
571	rss += sizeof (coro->curstackinfo);	668	rss += sizeof (slot->curstackinfo);
572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
575	rss += coro->tmps_max * sizeof (SV *);	671	rss += slot->tmps_max * sizeof (SV *);
576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
577	rss += coro->scopestack_max * sizeof (I32);	673	rss += slot->scopestack_max * sizeof (I32);
578	rss += coro->savestack_max * sizeof (ANY);	674	rss += slot->savestack_max * sizeof (ANY);
579		675
580	#if !PERL_VERSION_ATLEAST (5,9,0)	676	#if !PERL_VERSION_ATLEAST (5,10,0)
581	rss += coro->retstack_max * sizeof (OP *);	677	rss += slot->retstack_max * sizeof (OP *);
582	#endif	678	#endif
583	}	679	}
584		680
585	return rss;	681	return rss;
586	}	682	}
587		683
588	/** coroutine stack handling ************************************************/	684	/** coroutine stack handling ************************************************/
589		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
590	static void	736	static void
591	setup_coro (pTHX_ struct coro *coro)	737	coro_setup (pTHX_ struct coro *coro)
592	{	738	{
593	/*	739	/*
594	* emulate part of the perl startup here.	740	* emulate part of the perl startup here.
595	*/	741	*/
596	coro_init_stacks (aTHX);	742	coro_init_stacks (aTHX);
597		743
		744	PL_runops = RUNOPS_DEFAULT;
598	PL_curcop = &PL_compiling;	745	PL_curcop = &PL_compiling;
599	PL_in_eval = EVAL_NULL;	746	PL_in_eval = EVAL_NULL;
600	PL_comppad = 0;	747	PL_comppad = 0;
601	PL_curpm = 0;	748	PL_curpm = 0;
		749	PL_curpad = 0;
602	PL_localizing = 0;	750	PL_localizing = 0;
603	PL_dirty = 0;	751	PL_dirty = 0;
604	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);
605		767
606	{	768	{
607	dSP;	769	dSP;
608	LOGOP myop;	770	LOGOP myop;
609		771
610	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = coro->args; coro->args = 0;
612
613	Zero (&myop, 1, LOGOP);	772	Zero (&myop, 1, LOGOP);
614	myop.op_next = Nullop;	773	myop.op_next = Nullop;
615	myop.op_flags = OPf_WANT_VOID;	774	myop.op_flags = OPf_WANT_VOID;
616		775
617	PUSHMARK (SP);	776	PUSHMARK (SP);
618	XPUSHs (av_shift (GvAV (PL_defgv)));	777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
619	PUTBACK;	778	PUTBACK;
620	PL_op = (OP *)&myop;	779	PL_op = (OP *)&myop;
621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
622	SPAGAIN;	781	SPAGAIN;
623	}	782	}
624		783
625	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);
626	}	826	}
627		827
628	static void	828	static void
629	free_coro_mortal (pTHX)	829	free_coro_mortal (pTHX)
630	{	830	{
631	if (coro_mortal)	831	if (expect_true (coro_mortal))
632	{	832	{
633	SvREFCNT_dec (coro_mortal);	833	SvREFCNT_dec (coro_mortal);
634	coro_mortal = 0;	834	coro_mortal = 0;
635	}	835	}
636	}	836	}
637		837
638	static int	838	static int
639	runops_coro (pTHX)	839	runops_trace (pTHX)
640	{	840	{
641	COP *oldcop = 0;	841	COP *oldcop = 0;
642	int oldcxix = -2;	842	int oldcxix = -2;
		843	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		844	coro_cctx *cctx = coro->cctx;
643		845
644	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	846	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
645	{	847	{
646	PERL_ASYNC_CHECK ();	848	PERL_ASYNC_CHECK ();
647		849
648	if (PL_op->op_type == OP_LEAVESUB)	850	if (cctx->flags & CC_TRACE_ALL)
649	{	851	{
650	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	852	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
651	SV **bot, **top;
652	AV *av = newAV (); /* return values */
653	runops_proc_t old_runops = PL_runops;
654	dSP;
655	ENTER;
656	SAVETMPS;
657	EXTEND (SP, 3);
658	PL_runops = RUNOPS_DEFAULT;
659
660	GV *gv = CvGV (cx->blk_sub.cv);
661	SV *fullname = sv_2mortal (newSV (0));
662	if (isGV (gv))
663	gv_efullname3 (fullname, gv, 0);
664
665	bot = PL_stack_base + cx->blk_oldsp + 1;
666	top = cx->blk_gimme == G_ARRAY ? SP + 1
667	: cx->blk_gimme == G_SCALAR ? bot + 1
668	: bot;
669
670	while (bot < top)
671	av_push (av, SvREFCNT_inc (*bot++));
672
673	PUSHMARK (SP);
674	PUSHs (&PL_sv_no);
675	PUSHs (fullname);
676	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
677	PUTBACK;
678	call_pv ("Coro::_do_trace_sub", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
679	SPAGAIN;
680
681	FREETMPS;
682	LEAVE;
683	PL_runops = old_runops;
684	}
685
686	if (oldcop != PL_curcop)
687	{
688	oldcop = PL_curcop;
689
690	if (PL_curcop != &PL_compiling)
691	{	853	{
692	runops_proc_t old_runops = PL_runops;	854	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		855	SV **bot, **top;
		856	AV *av = newAV (); /* return values */
		857	SV **cb;
693	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;
694	ENTER;	875	ENTER;
695	SAVETMPS;	876	SAVETMPS;
696	EXTEND (SP, 3);	877	EXTEND (SP, 3);
697	PL_runops = RUNOPS_DEFAULT;
698
699	if (oldcxix != cxstack_ix)
700	{
701	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
702
703	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
704	{
705	GV *gv = CvGV (cx->blk_sub.cv);
706	SV *fullname = sv_2mortal (newSV (0));
707	if (isGV (gv))
708	gv_efullname3 (fullname, gv, 0);
709
710	PUSHMARK (SP);
711	PUSHs (&PL_sv_yes);
712	PUSHs (fullname);
713	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
714	PUTBACK;
715	call_pv ("Coro::_do_trace_sub", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
716	SPAGAIN;
717	}
718
719	oldcxix = cxstack_ix;
720	}
721
722	if (0) {
723	PUSHMARK (SP);	878	PUSHMARK (SP);
724	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	879	PUSHs (&PL_sv_no);
725	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	880	PUSHs (fullname);
		881	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
726	PUTBACK;	882	PUTBACK;
		883	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
727	call_pv ("Coro::_do_trace_line", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	884	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
728	SPAGAIN;	885	SPAGAIN;
729	}
730
731	FREETMPS;	886	FREETMPS;
732	LEAVE;	887	LEAVE;
733	PL_runops = old_runops;	888	PL_runops = runops_trace;
		889	}
		890
		891	if (oldcop != PL_curcop)
		892	{
		893	oldcop = PL_curcop;
		894
		895	if (PL_curcop != &PL_compiling)
		896	{
		897	SV **cb;
		898
		899	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		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;
		907	GV *gv = CvGV (cx->blk_sub.cv);
		908	SV *fullname = sv_2mortal (newSV (0));
		909
		910	if (isGV (gv))
		911	gv_efullname3 (fullname, gv, 0);
		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;
		942	PUSHMARK (SP);
		943	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		944	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		945	PUTBACK;
		946	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		947	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		948	SPAGAIN;
		949	FREETMPS;
		950	LEAVE;
		951	PL_runops = runops_trace;
		952	}
		953	}
734	}	954	}
735	}	955	}
736	}	956	}
737		957
738	TAINT_NOT;	958	TAINT_NOT;
…		…
741		961
742	/* 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 */
743	/* _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 */
744	/* during execution of a perl program */	964	/* during execution of a perl program */
745	static void NOINLINE	965	static void NOINLINE
746	prepare_cctx (pTHX_ coro_cctx *cctx)	966	cctx_prepare (pTHX_ coro_cctx *cctx)
747	{	967	{
748	dSP;	968	dSP;
749	LOGOP myop;	969	LOGOP myop;
750		970
751	PL_top_env = &PL_start_env;	971	PL_top_env = &PL_start_env;
752		972
753	if (cctx->flags & CC_TRACE)	973	if (cctx->flags & CC_TRACE)
754	PL_runops = runops_coro;	974	PL_runops = runops_trace;
755		975
756	Zero (&myop, 1, LOGOP);	976	Zero (&myop, 1, LOGOP);
757	myop.op_next = PL_op;	977	myop.op_next = PL_op;
758	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	978	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
759		979
…		…
769		989
770	/*	990	/*
771	* this is a _very_ stripped down perl interpreter ;)	991	* this is a _very_ stripped down perl interpreter ;)
772	*/	992	*/
773	static void	993	static void
774	coro_run (void *arg)	994	cctx_run (void *arg)
775	{	995	{
776	dTHX;	996	dTHX;
777		997
778	/* coro_run is the alternative tail of transfer(), so unlock here. */	998	/* cctx_run is the alternative tail of transfer(), so unlock here. */
779	UNLOCK;	999	UNLOCK;
780		1000
781	/* we now skip the entersub that lead to transfer() */	1001	/* we now skip the entersub that lead to transfer() */
782	PL_op = PL_op->op_next;	1002	PL_op = PL_op->op_next;
783		1003
784	/* inject a fake subroutine call to cctx_init */	1004	/* inject a fake subroutine call to cctx_init */
785	prepare_cctx (aTHX_ (coro_cctx *)arg);	1005	cctx_prepare (aTHX_ (coro_cctx *)arg);
786		1006
787	/* 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 */
788	PL_restartop = PL_op;	1008	PL_restartop = PL_op;
789	perl_run (PL_curinterp);	1009	perl_run (PL_curinterp);
790		1010
…		…
809	++cctx_count;	1029	++cctx_count;
810		1030
811	Newz (0, cctx, 1, coro_cctx);	1031	Newz (0, cctx, 1, coro_cctx);
812		1032
813	#if HAVE_MMAP	1033	#if HAVE_MMAP
814
815	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;
816	/* mmap supposedly does allocate-on-write for us */	1035	/* mmap supposedly does allocate-on-write for us */
817	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);
818		1037
819	if (cctx->sptr != (void *)-1)	1038	if (cctx->sptr != (void *)-1)
…		…
840	stack_start = cctx->sptr;	1059	stack_start = cctx->sptr;
841	stack_size = cctx->ssize;	1060	stack_size = cctx->ssize;
842	}	1061	}
843		1062
844	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1063	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
845	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);
846		1065
847	return cctx;	1066	return cctx;
848	}	1067	}
849		1068
850	static void	1069	static void
…		…
867	Safefree (cctx->sptr);	1086	Safefree (cctx->sptr);
868		1087
869	Safefree (cctx);	1088	Safefree (cctx);
870	}	1089	}
871		1090
		1091	/* wether this cctx should be destructed */
		1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1093
872	static coro_cctx *	1094	static coro_cctx *
873	cctx_get (pTHX)	1095	cctx_get (pTHX)
874	{	1096	{
875	while (cctx_first)	1097	while (expect_true (cctx_first))
876	{	1098	{
877	coro_cctx *cctx = cctx_first;	1099	coro_cctx *cctx = cctx_first;
878	cctx_first = cctx->next;	1100	cctx_first = cctx->next;
879	--cctx_idle;	1101	--cctx_idle;
880		1102
881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1103	if (expect_true (!CCTX_EXPIRED (cctx)))
882	return cctx;	1104	return cctx;
883		1105
884	cctx_destroy (cctx);	1106	cctx_destroy (cctx);
885	}	1107	}
886		1108
…		…
889		1111
890	static void	1112	static void
891	cctx_put (coro_cctx *cctx)	1113	cctx_put (coro_cctx *cctx)
892	{	1114	{
893	/* free another cctx if overlimit */	1115	/* free another cctx if overlimit */
894	if (cctx_idle >= MAX_IDLE_CCTX)	1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
895	{	1117	{
896	coro_cctx *first = cctx_first;	1118	coro_cctx *first = cctx_first;
897	cctx_first = first->next;	1119	cctx_first = first->next;
898	--cctx_idle;	1120	--cctx_idle;
899		1121
…		…
905	cctx_first = cctx;	1127	cctx_first = cctx;
906	}	1128	}
907		1129
908	/** coroutine switching *****************************************************/	1130	/** coroutine switching *****************************************************/
909		1131
910	/* never call directly, always through the coro_state_transfer global variable */	1132	static void
		1133	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1134	{
		1135	if (expect_true (prev != next))
		1136	{
		1137	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1138	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1139
		1140	if (expect_false (next->flags & CF_RUNNING))
		1141	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1142
		1143	if (expect_false (next->flags & CF_DESTROYED))
		1144	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1145
		1146	#if !PERL_VERSION_ATLEAST (5,10,0)
		1147	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1148	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1149	#endif
		1150	}
		1151	}
		1152
		1153	/* always use the TRANSFER macro */
911	static void NOINLINE	1154	static void NOINLINE
912	transfer (pTHX_ struct coro *prev, struct coro *next)	1155	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
913	{	1156	{
914	dSTACKLEVEL;	1157	dSTACKLEVEL;
		1158	static volatile int has_throw;
915		1159
916	/* sometimes transfer is only called to set idle_sp */	1160	/* sometimes transfer is only called to set idle_sp */
917	if (!next)	1161	if (expect_false (!next))
918	{	1162	{
919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
920	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 */
921	}	1165	}
922	else if (prev != next)	1166	else if (expect_true (prev != next))
923	{	1167	{
924	coro_cctx *prev__cctx;	1168	coro_cctx *prev__cctx;
925		1169
926	if (prev->flags & CF_NEW)	1170	if (expect_false (prev->flags & CF_NEW))
927	{	1171	{
928	/* create a new empty context */	1172	/* create a new empty context */
929	Newz (0, prev->cctx, 1, coro_cctx);	1173	Newz (0, prev->cctx, 1, coro_cctx);
930	prev->flags &= ~CF_NEW;	1174	prev->flags &= ~CF_NEW;
931	prev->flags |= CF_RUNNING;	1175	prev->flags |= CF_RUNNING;
932	}	1176	}
933		1177
934	/*TODO: must not croak here */
935	if (!prev->flags & CF_RUNNING)
936	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
937
938	if (next->flags & CF_RUNNING)
939	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
940
941	if (next->flags & CF_DESTROYED)
942	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
943
944	prev->flags &= ~CF_RUNNING;	1178	prev->flags &= ~CF_RUNNING;
945	next->flags |= CF_RUNNING;	1179	next->flags |= CF_RUNNING;
946		1180
947	LOCK;	1181	LOCK;
948		1182
		1183	/* first get rid of the old state */
		1184	save_perl (aTHX_ prev);
		1185
949	if (next->flags & CF_NEW)	1186	if (expect_false (next->flags & CF_NEW))
950	{	1187	{
951	/* need to start coroutine */	1188	/* need to start coroutine */
952	next->flags &= ~CF_NEW;	1189	next->flags &= ~CF_NEW;
953	/* first get rid of the old state */
954	save_perl (aTHX_ prev);
955	/* setup coroutine call */	1190	/* setup coroutine call */
956	setup_coro (aTHX_ next);	1191	coro_setup (aTHX_ next);
957	}	1192	}
958	else	1193	else
959	{
960	/* coroutine already started */
961	save_perl (aTHX_ prev);
962	load_perl (aTHX_ next);	1194	load_perl (aTHX_ next);
963	}
964		1195
965	prev__cctx = prev->cctx;	1196	prev__cctx = prev->cctx;
966		1197
967	/* possibly "free" the cctx */	1198	/* possibly "free" the cctx */
968	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	))
969	{	1204	{
970	/* 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 */
971	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));
972		1207
973	prev->cctx = 0;	1208	prev->cctx = 0;
974		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
975	cctx_put (prev__cctx);	1216	cctx_put (prev__cctx);
976	}	1217	}
977		1218
		1219	++next->usecount;
		1220
978	if (!next->cctx)	1221	if (expect_true (!next->cctx))
979	next->cctx = cctx_get (aTHX);	1222	next->cctx = cctx_get (aTHX);
980		1223
		1224	has_throw = !!next->throw;
		1225
981	if (prev__cctx != next->cctx)	1226	if (expect_false (prev__cctx != next->cctx))
982	{	1227	{
983	prev__cctx->top_env = PL_top_env;	1228	prev__cctx->top_env = PL_top_env;
984	PL_top_env = next->cctx->top_env;	1229	PL_top_env = next->cctx->top_env;
985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
986	}	1231	}
987		1232
988	free_coro_mortal (aTHX);	1233	free_coro_mortal (aTHX);
989	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	}
990	}	1248	}
991	}	1249	}
992		1250
993	struct transfer_args	1251	struct transfer_args
994	{	1252	{
995	struct coro *prev, *next;	1253	struct coro *prev, *next;
996	};	1254	};
997		1255
		1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1257	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
999		1258
1000	/** high level stuff ********************************************************/	1259	/** high level stuff ********************************************************/
1001		1260
1002	static int	1261	static int
1003	coro_state_destroy (pTHX_ struct coro *coro)	1262	coro_state_destroy (pTHX_ struct coro *coro)
…		…
1020		1279
1021	if (coro->mainstack && coro->mainstack != main_mainstack)	1280	if (coro->mainstack && coro->mainstack != main_mainstack)
1022	{	1281	{
1023	struct coro temp;	1282	struct coro temp;
1024		1283
1025	assert (!(coro->flags & CF_RUNNING));
1026
1027	Zero (&temp, 1, struct coro);
1028	temp.save = CORO_SAVE_ALL;
1029
1030	if (coro->flags & CF_RUNNING)	1284	if (coro->flags & CF_RUNNING)
1031	croak ("FATAL: tried to destroy currently running coroutine");	1285	croak ("FATAL: tried to destroy currently running coroutine");
1032		1286
1033	save_perl (aTHX_ &temp);	1287	save_perl (aTHX_ &temp);
1034	load_perl (aTHX_ coro);	1288	load_perl (aTHX_ coro);
1035		1289
1036	coro_destroy_stacks (aTHX);	1290	coro_destroy (aTHX_ coro);
1037		1291
1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1292	load_perl (aTHX_ &temp);
1039		1293
1040	coro->mainstack = 0;	1294	coro->slot = 0;
1041	}	1295	}
1042		1296
1043	cctx_destroy (coro->cctx);	1297	cctx_destroy (coro->cctx);
1044	SvREFCNT_dec (coro->args);	1298	SvREFCNT_dec (coro->args);
1045		1299
…		…
1086	#else	1340	#else
1087	# define MGf_DUP 0	1341	# define MGf_DUP 0
1088	#endif	1342	#endif
1089	};	1343	};
1090		1344
1091	static struct coro *
1092	SvSTATE_ (pTHX_ SV *coro)
1093	{
1094	HV *stash;
1095	MAGIC *mg;
1096
1097	if (SvROK (coro))
1098	coro = SvRV (coro);
1099
1100	stash = SvSTASH (coro);
1101	if (stash != coro_stash && stash != coro_state_stash)
1102	{
1103	/* very slow, but rare, check */
1104	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
1105	croak ("Coro::State object required");
1106	}
1107
1108	mg = CORO_MAGIC (coro);
1109	return (struct coro *)mg->mg_ptr;
1110	}
1111
1112	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1113
1114	static void	1345	static void
1115	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1346	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1116	{	1347	{
1117	ta->prev = SvSTATE (prev_sv);	1348	ta->prev = SvSTATE (prev_sv);
1118	ta->next = SvSTATE (next_sv);	1349	ta->next = SvSTATE (next_sv);
		1350	TRANSFER_CHECK (*ta);
1119	}	1351	}
1120		1352
1121	static void	1353	static void
1122	api_transfer (SV *prev_sv, SV *next_sv)	1354	api_transfer (SV *prev_sv, SV *next_sv)
1123	{	1355	{
1124	dTHX;	1356	dTHX;
1125	struct transfer_args ta;	1357	struct transfer_args ta;
1126		1358
1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1359	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1128	TRANSFER (ta);	1360	TRANSFER (ta, 1);
1129	}
1130
1131	static int
1132	api_save (SV *coro_sv, int new_save)
1133	{
1134	dTHX;
1135	struct coro *coro = SvSTATE (coro_sv);
1136	int old_save = coro->save;
1137
1138	if (new_save >= 0)
1139	coro->save = new_save;
1140
1141	return old_save;
1142	}	1361	}
1143		1362
1144	/** Coro ********************************************************************/	1363	/** Coro ********************************************************************/
1145		1364
1146	static void	1365	static void
…		…
1148	{	1367	{
1149	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);
1150	}	1369	}
1151		1370
1152	static SV *	1371	static SV *
1153	coro_deq (pTHX_ int min_prio)	1372	coro_deq (pTHX)
1154	{	1373	{
1155	int prio = PRIO_MAX - PRIO_MIN;	1374	int prio;
1156		1375
1157	min_prio -= PRIO_MIN;
1158	if (min_prio < 0)
1159	min_prio = 0;
1160
1161	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1376	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1162	if (AvFILLp (coro_ready [prio]) >= 0)	1377	if (AvFILLp (coro_ready [prio]) >= 0)
1163	return av_shift (coro_ready [prio]);	1378	return av_shift (coro_ready [prio]);
1164		1379
1165	return 0;	1380	return 0;
1166	}	1381	}
…		…
1168	static int	1383	static int
1169	api_ready (SV *coro_sv)	1384	api_ready (SV *coro_sv)
1170	{	1385	{
1171	dTHX;	1386	dTHX;
1172	struct coro *coro;	1387	struct coro *coro;
		1388	SV *hook;
1173		1389
1174	if (SvROK (coro_sv))	1390	if (SvROK (coro_sv))
1175	coro_sv = SvRV (coro_sv);	1391	coro_sv = SvRV (coro_sv);
1176		1392
1177	coro = SvSTATE (coro_sv);	1393	coro = SvSTATE (coro_sv);
…		…
1180	return 0;	1396	return 0;
1181		1397
1182	coro->flags |= CF_READY;	1398	coro->flags |= CF_READY;
1183		1399
1184	LOCK;	1400	LOCK;
		1401
		1402	hook = coro_nready ? 0 : coro_readyhook;
		1403
1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1404	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1186	++coro_nready;	1405	++coro_nready;
		1406
1187	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	}
1188		1424
1189	return 1;	1425	return 1;
1190	}	1426	}
1191		1427
1192	static int	1428	static int
…		…
1202	SV *prev_sv, *next_sv;	1438	SV *prev_sv, *next_sv;
1203		1439
1204	for (;;)	1440	for (;;)
1205	{	1441	{
1206	LOCK;	1442	LOCK;
1207	next_sv = coro_deq (aTHX_ PRIO_MIN);	1443	next_sv = coro_deq (aTHX);
1208		1444
1209	/* nothing to schedule: call the idle handler */	1445	/* nothing to schedule: call the idle handler */
1210	if (!next_sv)	1446	if (expect_false (!next_sv))
1211	{	1447	{
1212	dSP;	1448	dSP;
1213	UNLOCK;	1449	UNLOCK;
1214		1450
1215	ENTER;	1451	ENTER;
1216	SAVETMPS;	1452	SAVETMPS;
1217		1453
1218	PUSHMARK (SP);	1454	PUSHMARK (SP);
1219	PUTBACK;	1455	PUTBACK;
1220	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1456	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1457	SPAGAIN;
1221		1458
1222	FREETMPS;	1459	FREETMPS;
1223	LEAVE;	1460	LEAVE;
1224	continue;	1461	continue;
1225	}	1462	}
1226		1463
1227	ta->next = SvSTATE (next_sv);	1464	ta->next = SvSTATE (next_sv);
1228		1465
1229	/* cannot transfer to destroyed coros, skip and look for next */	1466	/* cannot transfer to destroyed coros, skip and look for next */
1230	if (ta->next->flags & CF_DESTROYED)	1467	if (expect_false (ta->next->flags & CF_DESTROYED))
1231	{	1468	{
1232	UNLOCK;	1469	UNLOCK;
1233	SvREFCNT_dec (next_sv);	1470	SvREFCNT_dec (next_sv);
1234	/* coro_nready is already taken care of by destroy */	1471	/* coro_nready is already taken care of by destroy */
1235	continue;	1472	continue;
…		…
1240	break;	1477	break;
1241	}	1478	}
1242		1479
1243	/* free this only after the transfer */	1480	/* free this only after the transfer */
1244	prev_sv = SvRV (coro_current);	1481	prev_sv = SvRV (coro_current);
1245	SvRV_set (coro_current, next_sv);
1246	ta->prev = SvSTATE (prev_sv);	1482	ta->prev = SvSTATE (prev_sv);
1247		1483	TRANSFER_CHECK (*ta);
1248	assert (ta->next->flags & CF_READY);	1484	assert (ta->next->flags & CF_READY);
1249	ta->next->flags &= ~CF_READY;	1485	ta->next->flags &= ~CF_READY;
		1486	SvRV_set (coro_current, next_sv);
1250		1487
1251	LOCK;	1488	LOCK;
1252	free_coro_mortal (aTHX);	1489	free_coro_mortal (aTHX);
1253	coro_mortal = prev_sv;	1490	coro_mortal = prev_sv;
1254	UNLOCK;	1491	UNLOCK;
…		…
1280	{	1517	{
1281	dTHX;	1518	dTHX;
1282	struct transfer_args ta;	1519	struct transfer_args ta;
1283		1520
1284	prepare_schedule (aTHX_ &ta);	1521	prepare_schedule (aTHX_ &ta);
1285	TRANSFER (ta);	1522	TRANSFER (ta, 1);
1286	}	1523	}
1287		1524
1288	static int	1525	static int
1289	api_cede (void)	1526	api_cede (void)
1290	{	1527	{
1291	dTHX;	1528	dTHX;
1292	struct transfer_args ta;	1529	struct transfer_args ta;
1293		1530
1294	prepare_cede (aTHX_ &ta);	1531	prepare_cede (aTHX_ &ta);
1295		1532
1296	if (ta.prev != ta.next)	1533	if (expect_true (ta.prev != ta.next))
1297	{	1534	{
1298	TRANSFER (ta);	1535	TRANSFER (ta, 1);
1299	return 1;	1536	return 1;
1300	}	1537	}
1301	else	1538	else
1302	return 0;	1539	return 0;
1303	}	1540	}
…		…
1308	dTHX;	1545	dTHX;
1309	struct transfer_args ta;	1546	struct transfer_args ta;
1310		1547
1311	if (prepare_cede_notself (aTHX_ &ta))	1548	if (prepare_cede_notself (aTHX_ &ta))
1312	{	1549	{
1313	TRANSFER (ta);	1550	TRANSFER (ta, 1);
1314	return 1;	1551	return 1;
1315	}	1552	}
1316	else	1553	else
1317	return 0;	1554	return 0;
1318	}	1555	}
1319		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
1320	MODULE = Coro::State PACKAGE = Coro::State	1583	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1321		1584
1322	PROTOTYPES: DISABLE	1585	PROTOTYPES: DISABLE
1323		1586
1324	BOOT:	1587	BOOT:
1325	{	1588	{
1326	#ifdef USE_ITHREADS	1589	#ifdef USE_ITHREADS
1327	MUTEX_INIT (&coro_mutex);	1590	MUTEX_INIT (&coro_mutex);
1328	#endif	1591	#endif
1329	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));
1330		1605
1331	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1606	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1332		1607
1333	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1608	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1334	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1609	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1335	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1610	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1336	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1611	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1337		1612
1338	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1339	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1340	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1341	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1342	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1343	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1344	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1345
1346	main_mainstack = PL_mainstack;	1613	main_mainstack = PL_mainstack;
1347	main_top_env = PL_top_env;	1614	main_top_env = PL_top_env;
1348		1615
1349	while (main_top_env->je_prev)	1616	while (main_top_env->je_prev)
1350	main_top_env = main_top_env->je_prev;	1617	main_top_env = main_top_env->je_prev;
1351		1618
1352	coroapi.ver = CORO_API_VERSION;	1619	coroapi.ver = CORO_API_VERSION;
		1620	coroapi.rev = CORO_API_REVISION;
1353	coroapi.transfer = api_transfer;	1621	coroapi.transfer = api_transfer;
1354		1622
1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1623	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1356	}	1624	}
1357		1625
1358	SV *	1626	SV *
1359	new (char *klass, ...)	1627	new (char *klass, ...)
1360	CODE:	1628	CODE:
1361	{	1629	{
1362	struct coro *coro;	1630	struct coro *coro;
		1631	MAGIC *mg;
1363	HV *hv;	1632	HV *hv;
1364	int i;	1633	int i;
1365		1634
1366	Newz (0, coro, 1, struct coro);	1635	Newz (0, coro, 1, struct coro);
1367	coro->args = newAV ();	1636	coro->args = newAV ();
1368	coro->save = CORO_SAVE_DEF;
1369	coro->flags = CF_NEW;	1637	coro->flags = CF_NEW;
1370		1638
1371	if (coro_first) coro_first->prev = coro;	1639	if (coro_first) coro_first->prev = coro;
1372	coro->next = coro_first;	1640	coro->next = coro_first;
1373	coro_first = coro;	1641	coro_first = coro;
1374		1642
1375	coro->hv = hv = newHV ();	1643	coro->hv = hv = newHV ();
1376	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;
1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1646	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1378		1647
		1648	av_extend (coro->args, items - 1);
1379	for (i = 1; i < items; i++)	1649	for (i = 1; i < items; i++)
1380	av_push (coro->args, newSVsv (ST (i)));	1650	av_push (coro->args, newSVsv (ST (i)));
1381	}	1651	}
1382	OUTPUT:	1652	OUTPUT:
1383	RETVAL	1653	RETVAL
1384		1654
1385	int	1655	# these not obviously related functions are all rolled into the same xs
1386	save (SV *coro, int new_save = -1)	1656	# function to increase chances that they all will call transfer with the same
1387	CODE:	1657	# stack offset
1388	RETVAL = api_save (coro, new_save);
1389	OUTPUT:
1390	RETVAL
1391
1392	int
1393	save_also (SV *coro_sv, int save_also)
1394	CODE:
1395	{
1396	struct coro *coro = SvSTATE (coro_sv);
1397	RETVAL = coro->save;
1398	coro->save |= save_also;
1399	}
1400	OUTPUT:
1401	RETVAL
1402
1403	void	1658	void
1404	_set_stacklevel (...)	1659	_set_stacklevel (...)
1405	ALIAS:	1660	ALIAS:
1406	Coro::State::transfer = 1	1661	Coro::State::transfer = 1
1407	Coro::schedule = 2	1662	Coro::schedule = 2
…		…
1409	Coro::cede_notself = 4	1664	Coro::cede_notself = 4
1410	CODE:	1665	CODE:
1411	{	1666	{
1412	struct transfer_args ta;	1667	struct transfer_args ta;
1413		1668
		1669	PUTBACK;
1414	switch (ix)	1670	switch (ix)
1415	{	1671	{
1416	case 0:	1672	case 0:
1417	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1673	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1418	ta.next = 0;	1674	ta.next = 0;
…		…
1437	if (!prepare_cede_notself (aTHX_ &ta))	1693	if (!prepare_cede_notself (aTHX_ &ta))
1438	XSRETURN_EMPTY;	1694	XSRETURN_EMPTY;
1439		1695
1440	break;	1696	break;
1441	}	1697	}
		1698	SPAGAIN;
1442		1699
1443	BARRIER;	1700	BARRIER;
		1701	PUTBACK;
1444	TRANSFER (ta);	1702	TRANSFER (ta, 0);
1445		1703	SPAGAIN; /* might be the sp of a different coroutine now */
1446	if (GIMME_V != G_VOID && ta.next != ta.prev)	1704	/* be extra careful not to ever do anything after TRANSFER */
1447	XSRETURN_YES;
1448	}	1705	}
1449		1706
1450	bool	1707	bool
1451	_destroy (SV *coro_sv)	1708	_destroy (SV *coro_sv)
1452	CODE:	1709	CODE:
1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1710	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1454	OUTPUT:	1711	OUTPUT:
1455	RETVAL	1712	RETVAL
1456		1713
1457	void	1714	void
1458	_exit (code)	1715	_exit (int code)
1459	int code
1460	PROTOTYPE: $	1716	PROTOTYPE: $
1461	CODE:	1717	CODE:
1462	_exit (code);	1718	_exit (code);
1463		1719
1464	int	1720	int
…		…
1501	CODE:	1757	CODE:
1502	{	1758	{
1503	if (coro->mainstack)	1759	if (coro->mainstack)
1504	{	1760	{
1505	struct coro temp;	1761	struct coro temp;
1506	Zero (&temp, 1, struct coro);
1507	temp.save = CORO_SAVE_ALL;
1508		1762
1509	if (!(coro->flags & CF_RUNNING))	1763	if (!(coro->flags & CF_RUNNING))
1510	{	1764	{
		1765	PUTBACK;
1511	save_perl (aTHX_ &temp);	1766	save_perl (aTHX_ &temp);
1512	load_perl (aTHX_ coro);	1767	load_perl (aTHX_ coro);
1513	}	1768	}
1514		1769
1515	{	1770	{
1516	dSP;	1771	dSP;
1517	ENTER;	1772	ENTER;
1518	SAVETMPS;	1773	SAVETMPS;
		1774	PUTBACK;
		1775	PUSHSTACK;
1519	PUSHMARK (SP);	1776	PUSHMARK (SP);
1520	PUTBACK;	1777
1521	if (ix)	1778	if (ix)
1522	eval_sv (coderef, 0);	1779	eval_sv (coderef, 0);
1523	else	1780	else
1524	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;
1525	SPAGAIN;	1784	SPAGAIN;
1526	FREETMPS;	1785	FREETMPS;
1527	LEAVE;	1786	LEAVE;
1528	PUTBACK;	1787	PUTBACK;
1529	}	1788	}
1530		1789
1531	if (!(coro->flags & CF_RUNNING))	1790	if (!(coro->flags & CF_RUNNING))
1532	{	1791	{
1533	save_perl (aTHX_ coro);	1792	save_perl (aTHX_ coro);
1534	load_perl (aTHX_ &temp);	1793	load_perl (aTHX_ &temp);
		1794	SPAGAIN;
1535	}	1795	}
1536	}	1796	}
1537	}	1797	}
1538		1798
1539	SV *	1799	SV *
1540	is_ready (Coro::State coro)	1800	is_ready (Coro::State coro)
1541	PROTOTYPE: $	1801	PROTOTYPE: $
1542	ALIAS:	1802	ALIAS:
1543	is_ready = CF_READY	1803	is_ready = CF_READY
…		…
1548	RETVAL = boolSV (coro->flags & ix);	1808	RETVAL = boolSV (coro->flags & ix);
1549	OUTPUT:	1809	OUTPUT:
1550	RETVAL	1810	RETVAL
1551		1811
1552	void	1812	void
1553	trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB)	1813	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1554	CODE:
1555	if (flags & CC_TRACE)
1556	{
1557	if (!coro->cctx)
1558	coro->cctx = cctx_new ();
1559	else if (!(coro->cctx->flags & CC_TRACE))
1560	croak ("cannot enable tracing on coroutine with custom stack");
1561
1562	coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1563	}
1564	else
1565	if (coro->cctx && coro->cctx->flags & CC_TRACE)
1566	{
1567	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1568	coro->cctx->flags |= CC_NOREUSE;
1569
1570	if (coro->flags & CF_RUNNING)
1571	PL_runops = RUNOPS_DEFAULT;
1572	else
1573	coro->runops = RUNOPS_DEFAULT;
1574	}
1575		1814
1576	SV *	1815	SV *
1577	has_stack (Coro::State coro)	1816	has_cctx (Coro::State coro)
1578	PROTOTYPE: $	1817	PROTOTYPE: $
1579	CODE:	1818	CODE:
1580	RETVAL = boolSV (!!coro->cctx);	1819	RETVAL = boolSV (!!coro->cctx);
1581	OUTPUT:	1820	OUTPUT:
1582	RETVAL	1821	RETVAL
…		…
1590	RETVAL	1829	RETVAL
1591		1830
1592	IV	1831	IV
1593	rss (Coro::State coro)	1832	rss (Coro::State coro)
1594	PROTOTYPE: $	1833	PROTOTYPE: $
		1834	ALIAS:
		1835	usecount = 1
1595	CODE:	1836	CODE:
1596	RETVAL = coro_rss (coro);	1837	switch (ix)
		1838	{
		1839	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1840	case 1: RETVAL = coro->usecount; break;
		1841	}
1597	OUTPUT:	1842	OUTPUT:
1598	RETVAL	1843	RETVAL
1599		1844
		1845	void
		1846	force_cctx ()
		1847	CODE:
		1848	struct coro *coro = SvSTATE (coro_current);
		1849	coro->cctx->idle_sp = 0;
1600		1850
1601	MODULE = Coro::State PACKAGE = Coro	1851	MODULE = Coro::State PACKAGE = Coro
1602		1852
1603	BOOT:	1853	BOOT:
1604	{	1854	{
1605	int i;	1855	int i;
1606		1856
1607	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1608	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1609	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);
1610		1860
1611	coro_current = get_sv ("Coro::current", FALSE);	1861	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1612	SvREADONLY_on (coro_current);	1862	SvREADONLY_on (coro_current);
1613		1863
1614	coro_stash = gv_stashpv ("Coro", TRUE);	1864	coro_stash = gv_stashpv ("Coro", TRUE);
1615		1865
1616	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1866	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1617	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1867	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1618	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1868	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1619	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1869	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1622		1872
1623	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1873	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1624	coro_ready[i] = newAV ();	1874	coro_ready[i] = newAV ();
1625		1875
1626	{	1876	{
1627	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 */
1628		1879
1629	coroapi.schedule = api_schedule;	1880	coroapi.schedule = api_schedule;
1630	coroapi.save = api_save;
1631	coroapi.cede = api_cede;	1881	coroapi.cede = api_cede;
1632	coroapi.cede_notself = api_cede_notself;	1882	coroapi.cede_notself = api_cede_notself;
1633	coroapi.ready = api_ready;	1883	coroapi.ready = api_ready;
1634	coroapi.is_ready = api_is_ready;	1884	coroapi.is_ready = api_is_ready;
1635	coroapi.nready = &coro_nready;	1885	coroapi.nready = &coro_nready;
…		…
1645	_set_current (SV *current)	1895	_set_current (SV *current)
1646	PROTOTYPE: $	1896	PROTOTYPE: $
1647	CODE:	1897	CODE:
1648	SvREFCNT_dec (SvRV (coro_current));	1898	SvREFCNT_dec (SvRV (coro_current));
1649	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	SvREFCNT_dec (coro_readyhook);
		1907	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1908	UNLOCK;
1650		1909
1651	int	1910	int
1652	prio (Coro::State coro, int newprio = 0)	1911	prio (Coro::State coro, int newprio = 0)
1653	ALIAS:	1912	ALIAS:
1654	nice = 1	1913	nice = 1
…		…
1684	CODE:	1943	CODE:
1685	RETVAL = coro_nready;	1944	RETVAL = coro_nready;
1686	OUTPUT:	1945	OUTPUT:
1687	RETVAL	1946	RETVAL
1688		1947
		1948	void
		1949	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1950	PROTOTYPE: $;$
		1951	CODE:
		1952	SvREFCNT_dec (self->throw);
		1953	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1954
		1955	void
		1956	swap_defsv (Coro::State self)
		1957	PROTOTYPE: $
		1958	ALIAS:
		1959	swap_defav = 1
		1960	CODE:
		1961	if (!self->slot)
		1962	croak ("cannot swap state with coroutine that has no saved state");
		1963	else
		1964	{
		1965	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1966	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1967
		1968	SV *tmp = *src; *src = *dst; *dst = tmp;
		1969	}
		1970
1689	# for async_pool speedup	1971	# for async_pool speedup
1690	void	1972	void
1691	_pool_1 (SV *cb)	1973	_pool_1 (SV *cb)
1692	CODE:	1974	CODE:
1693	{	1975	{
1694	int i, len;	1976	struct coro *coro = SvSTATE (coro_current);
1695	HV *hv = (HV *)SvRV (coro_current);	1977	HV *hv = (HV *)SvRV (coro_current);
1696	AV *defav = GvAV (PL_defgv);	1978	AV *defav = GvAV (PL_defgv);
1697	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1979	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1698	AV *invoke_av;	1980	AV *invoke_av;
		1981	int i, len;
1699		1982
1700	if (!invoke)	1983	if (!invoke)
		1984	{
		1985	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1701	croak ("\3terminate\2\n");	1986	croak ("\3async_pool terminate\2\n");
		1987	}
		1988
		1989	SvREFCNT_dec (coro->saved_deffh);
		1990	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1702		1991
1703	hv_store (hv, "desc", sizeof ("desc") - 1,	1992	hv_store (hv, "desc", sizeof ("desc") - 1,
1704	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	1993	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1705		1994
1706	invoke_av = (AV *)SvRV (invoke);	1995	invoke_av = (AV *)SvRV (invoke);
…		…
1724	{	2013	{
1725	struct coro *coro = SvSTATE (coro_current);	2014	struct coro *coro = SvSTATE (coro_current);
1726		2015
1727	sv_setsv (cb, &PL_sv_undef);	2016	sv_setsv (cb, &PL_sv_undef);
1728		2017
		2018	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2019	coro->saved_deffh = 0;
		2020
1729	if (coro_rss (coro) > SvIV (sv_pool_rss)	2021	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1730	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2022	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2023	{
		2024	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1731	croak ("\3terminate\2\n");	2025	croak ("\3async_pool terminate\2\n");
		2026	}
1732		2027
1733	av_clear (GvAV (PL_defgv));	2028	av_clear (GvAV (PL_defgv));
1734	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2029	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1735	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2030	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1736	coro->save = CORO_SAVE_DEF;	2031
1737	coro->prio = 0;	2032	coro->prio = 0;
		2033
		2034	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2035	api_trace (coro_current, 0);
		2036
1738	av_push (av_async_pool, newSVsv (coro_current));	2037	av_push (av_async_pool, newSVsv (coro_current));
1739	}	2038	}
1740		2039
1741		2040
1742	MODULE = Coro::State PACKAGE = Coro::AIO	2041	MODULE = Coro::State PACKAGE = Coro::AIO
…		…
1771	PL_laststype = data->laststype;	2070	PL_laststype = data->laststype;
1772	PL_laststatval = data->laststatval;	2071	PL_laststatval = data->laststatval;
1773	PL_statcache = data->statcache;	2072	PL_statcache = data->statcache;
1774	}	2073	}
1775		2074
		2075
		2076	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2077
		2078	BOOT:
		2079	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2080
		2081	SV *
		2082	_schedule ()
		2083	PROTOTYPE: @
		2084	CODE:
		2085	{
		2086	static int incede;
		2087
		2088	api_cede_notself ();
		2089
		2090	++incede;
		2091	while (coro_nready >= incede && api_cede ())
		2092	;
		2093
		2094	sv_setsv (sv_activity, &PL_sv_undef);
		2095	if (coro_nready >= incede)
		2096	{
		2097	PUSHMARK (SP);
		2098	PUTBACK;
		2099	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2100	SPAGAIN;
		2101	}
		2102
		2103	--incede;
		2104	}
		2105

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